drivers/scsi/lpfc/lpfc_init.c

   1 /*******************************************************************
   2  * This file is part of the Emulex Linux Device Driver for         *
   3  * Fibre Channel Host Bus Adapters.                                *
   4  * Copyright (C) 2004-2011 Emulex.  All rights reserved.           *
   5  * EMULEX and SLI are trademarks of Emulex.                        *
   6  * www.emulex.com                                                  *
   7  * Portions Copyright (C) 2004-2005 Christoph Hellwig              *
   8  *                                                                 *
   9  * This program is free software; you can redistribute it and/or   *
  10  * modify it under the terms of version 2 of the GNU General       *
  11  * Public License as published by the Free Software Foundation.    *
  12  * This program is distributed in the hope that it will be useful. *
  13  * ALL EXPRESS OR IMPLIED CONDITIONS, REPRESENTATIONS AND          *
  14  * WARRANTIES, INCLUDING ANY IMPLIED WARRANTY OF MERCHANTABILITY,  *
  15  * FITNESS FOR A PARTICULAR PURPOSE, OR NON-INFRINGEMENT, ARE      *
  16  * DISCLAIMED, EXCEPT TO THE EXTENT THAT SUCH DISCLAIMERS ARE HELD *
  17  * TO BE LEGALLY INVALID.  See the GNU General Public License for  *
  18  * more details, a copy of which can be found in the file COPYING  *
  19  * included with this package.                                     *
  20  *******************************************************************/
  21
  22 #include <linux/blkdev.h>
  23 #include <linux/delay.h>
  24 #include <linux/dma-mapping.h>
  25 #include <linux/idr.h>
  26 #include <linux/interrupt.h>
  27 #include <linux/kthread.h>
  28 #include <linux/pci.h>
  29 #include <linux/spinlock.h>
  30 #include <linux/ctype.h>
  31 #include <linux/aer.h>
  32 #include <linux/slab.h>
  33 #include <linux/firmware.h>
  34
  35 #include <scsi/scsi.h>
  36 #include <scsi/scsi_device.h>
  37 #include <scsi/scsi_host.h>
  38 #include <scsi/scsi_transport_fc.h>
  39
  40 #include "lpfc_hw4.h"
  41 #include "lpfc_hw.h"
  42 #include "lpfc_sli.h"
  43 #include "lpfc_sli4.h"
  44 #include "lpfc_nl.h"
  45 #include "lpfc_disc.h"
  46 #include "lpfc_scsi.h"
  47 #include "lpfc.h"
  48 #include "lpfc_logmsg.h"
  49 #include "lpfc_crtn.h"
  50 #include "lpfc_vport.h"
  51 #include "lpfc_version.h"
  52
  53 char *_dump_buf_data;
  54 unsigned long _dump_buf_data_order;
  55 char *_dump_buf_dif;
  56 unsigned long _dump_buf_dif_order;
  57 spinlock_t _dump_buf_lock;
  58
  59 static void lpfc_get_hba_model_desc(struct lpfc_hba *, uint8_t *, uint8_t *);
  60 static int lpfc_post_rcv_buf(struct lpfc_hba *);
  61 static int lpfc_sli4_queue_create(struct lpfc_hba *);
  62 static void lpfc_sli4_queue_destroy(struct lpfc_hba *);
  63 static int lpfc_create_bootstrap_mbox(struct lpfc_hba *);
  64 static int lpfc_setup_endian_order(struct lpfc_hba *);
  65 static int lpfc_sli4_read_config(struct lpfc_hba *);
  66 static void lpfc_destroy_bootstrap_mbox(struct lpfc_hba *);
  67 static void lpfc_free_sgl_list(struct lpfc_hba *);
  68 static int lpfc_init_sgl_list(struct lpfc_hba *);
  69 static int lpfc_init_active_sgl_array(struct lpfc_hba *);
  70 static void lpfc_free_active_sgl(struct lpfc_hba *);
  71 static int lpfc_hba_down_post_s3(struct lpfc_hba *phba);
  72 static int lpfc_hba_down_post_s4(struct lpfc_hba *phba);
  73 static int lpfc_sli4_cq_event_pool_create(struct lpfc_hba *);
  74 static void lpfc_sli4_cq_event_pool_destroy(struct lpfc_hba *);
  75 static void lpfc_sli4_cq_event_release_all(struct lpfc_hba *);
  76
  77 static struct scsi_transport_template *lpfc_transport_template = NULL;
  78 static struct scsi_transport_template *lpfc_vport_transport_template = NULL;
  79 static DEFINE_IDR(lpfc_hba_index);
  80
  81 /**
  82  * lpfc_config_port_prep - Perform lpfc initialization prior to config port
  83  * @phba: pointer to lpfc hba data structure.
  84  *
  85  * This routine will do LPFC initialization prior to issuing the CONFIG_PORT
  86  * mailbox command. It retrieves the revision information from the HBA and
  87  * collects the Vital Product Data (VPD) about the HBA for preparing the
  88  * configuration of the HBA.
  89  *
  90  * Return codes:
  91  *   0 - success.
  92  *   -ERESTART - requests the SLI layer to reset the HBA and try again.
  93  *   Any other value - indicates an error.
  94  **/
  95 int
  96 lpfc_config_port_prep(struct lpfc_hba *phba)
  97 {
  98         lpfc_vpd_t *vp = &phba->vpd;
  99         int i = 0, rc;
 100         LPFC_MBOXQ_t *pmb;
 101         MAILBOX_t *mb;
 102         char *lpfc_vpd_data = NULL;
 103         uint16_t offset = 0;
 104         static char licensed[56] =
 105                     "key unlock for use with gnu public licensed code only\0";
 106         static int init_key = 1;
 107
 108         pmb = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
 109         if (!pmb) {
 110                 phba->link_state = LPFC_HBA_ERROR;
 111                 return -ENOMEM;
 112         }
 113
 114         mb = &pmb->u.mb;
 115         phba->link_state = LPFC_INIT_MBX_CMDS;
 116
 117         if (lpfc_is_LC_HBA(phba->pcidev->device)) {
 118                 if (init_key) {
 119                         uint32_t *ptext = (uint32_t *) licensed;
 120
 121                         for (i = 0; i < 56; i += sizeof (uint32_t), ptext++)
 122                                 *ptext = cpu_to_be32(*ptext);
 123                         init_key = 0;
 124                 }
 125
 126                 lpfc_read_nv(phba, pmb);
 127                 memset((char*)mb->un.varRDnvp.rsvd3, 0,
 128                         sizeof (mb->un.varRDnvp.rsvd3));
 129                 memcpy((char*)mb->un.varRDnvp.rsvd3, licensed,
 130                          sizeof (licensed));
 131
 132                 rc = lpfc_sli_issue_mbox(phba, pmb, MBX_POLL);
 133
 134                 if (rc != MBX_SUCCESS) {
 135                         lpfc_printf_log(phba, KERN_ERR, LOG_MBOX,
 136                                         "0324 Config Port initialization "
 137                                         "error, mbxCmd x%x READ_NVPARM, "
 138                                         "mbxStatus x%x\n",
 139                                         mb->mbxCommand, mb->mbxStatus);
 140                         mempool_free(pmb, phba->mbox_mem_pool);
 141                         return -ERESTART;
 142                 }
 143                 memcpy(phba->wwnn, (char *)mb->un.varRDnvp.nodename,
 144                        sizeof(phba->wwnn));
 145                 memcpy(phba->wwpn, (char *)mb->un.varRDnvp.portname,
 146                        sizeof(phba->wwpn));
 147         }
 148
 149         phba->sli3_options = 0x0;
 150
 151         /* Setup and issue mailbox READ REV command */
 152         lpfc_read_rev(phba, pmb);
 153         rc = lpfc_sli_issue_mbox(phba, pmb, MBX_POLL);
 154         if (rc != MBX_SUCCESS) {
 155                 lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
 156                                 "0439 Adapter failed to init, mbxCmd x%x "
 157                                 "READ_REV, mbxStatus x%x\n",
 158                                 mb->mbxCommand, mb->mbxStatus);
 159                 mempool_free( pmb, phba->mbox_mem_pool);
 160                 return -ERESTART;
 161         }
 162
 163
 164         /*
 165          * The value of rr must be 1 since the driver set the cv field to 1.
 166          * This setting requires the FW to set all revision fields.
 167          */
 168         if (mb->un.varRdRev.rr == 0) {
 169                 vp->rev.rBit = 0;
 170                 lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
 171                                 "0440 Adapter failed to init, READ_REV has "
 172                                 "missing revision information.\n");
 173                 mempool_free(pmb, phba->mbox_mem_pool);
 174                 return -ERESTART;
 175         }
 176
 177         if (phba->sli_rev == 3 && !mb->un.varRdRev.v3rsp) {
 178                 mempool_free(pmb, phba->mbox_mem_pool);
 179                 return -EINVAL;
 180         }
 181
 182         /* Save information as VPD data */
 183         vp->rev.rBit = 1;
 184         memcpy(&vp->sli3Feat, &mb->un.varRdRev.sli3Feat, sizeof(uint32_t));
 185         vp->rev.sli1FwRev = mb->un.varRdRev.sli1FwRev;
 186         memcpy(vp->rev.sli1FwName, (char*) mb->un.varRdRev.sli1FwName, 16);
 187         vp->rev.sli2FwRev = mb->un.varRdRev.sli2FwRev;
 188         memcpy(vp->rev.sli2FwName, (char *) mb->un.varRdRev.sli2FwName, 16);
 189         vp->rev.biuRev = mb->un.varRdRev.biuRev;
 190         vp->rev.smRev = mb->un.varRdRev.smRev;
 191         vp->rev.smFwRev = mb->un.varRdRev.un.smFwRev;
 192         vp->rev.endecRev = mb->un.varRdRev.endecRev;
 193         vp->rev.fcphHigh = mb->un.varRdRev.fcphHigh;
 194         vp->rev.fcphLow = mb->un.varRdRev.fcphLow;
 195         vp->rev.feaLevelHigh = mb->un.varRdRev.feaLevelHigh;
 196         vp->rev.feaLevelLow = mb->un.varRdRev.feaLevelLow;
 197         vp->rev.postKernRev = mb->un.varRdRev.postKernRev;
 198         vp->rev.opFwRev = mb->un.varRdRev.opFwRev;
 199
 200         /* If the sli feature level is less then 9, we must
 201          * tear down all RPIs and VPIs on link down if NPIV
 202          * is enabled.
 203          */
 204         if (vp->rev.feaLevelHigh < 9)
 205                 phba->sli3_options |= LPFC_SLI3_VPORT_TEARDOWN;
 206
 207         if (lpfc_is_LC_HBA(phba->pcidev->device))
 208                 memcpy(phba->RandomData, (char *)&mb->un.varWords[24],
 209                                                 sizeof (phba->RandomData));
 210
 211         /* Get adapter VPD information */
 212         lpfc_vpd_data = kmalloc(DMP_VPD_SIZE, GFP_KERNEL);
 213         if (!lpfc_vpd_data)
 214                 goto out_free_mbox;
 215         do {
 216                 lpfc_dump_mem(phba, pmb, offset, DMP_REGION_VPD);
 217                 rc = lpfc_sli_issue_mbox(phba, pmb, MBX_POLL);
 218
 219                 if (rc != MBX_SUCCESS) {
 220                         lpfc_printf_log(phba, KERN_INFO, LOG_INIT,
 221                                         "0441 VPD not present on adapter, "
 222                                         "mbxCmd x%x DUMP VPD, mbxStatus x%x\n",
 223                                         mb->mbxCommand, mb->mbxStatus);
 224                         mb->un.varDmp.word_cnt = 0;
 225                 }
 226                 /* dump mem may return a zero when finished or we got a
 227                  * mailbox error, either way we are done.
 228                  */
 229                 if (mb->un.varDmp.word_cnt == 0)
 230                         break;
 231                 if (mb->un.varDmp.word_cnt > DMP_VPD_SIZE - offset)
 232                         mb->un.varDmp.word_cnt = DMP_VPD_SIZE - offset;
 233                 lpfc_sli_pcimem_bcopy(((uint8_t *)mb) + DMP_RSP_OFFSET,
 234                                       lpfc_vpd_data + offset,
 235                                       mb->un.varDmp.word_cnt);
 236                 offset += mb->un.varDmp.word_cnt;
 237         } while (mb->un.varDmp.word_cnt && offset < DMP_VPD_SIZE);
 238         lpfc_parse_vpd(phba, lpfc_vpd_data, offset);
 239
 240         kfree(lpfc_vpd_data);
 241 out_free_mbox:
 242         mempool_free(pmb, phba->mbox_mem_pool);
 243         return 0;
 244 }
 245
 246 /**
 247  * lpfc_config_async_cmpl - Completion handler for config async event mbox cmd
 248  * @phba: pointer to lpfc hba data structure.
 249  * @pmboxq: pointer to the driver internal queue element for mailbox command.
 250  *
 251  * This is the completion handler for driver's configuring asynchronous event
 252  * mailbox command to the device. If the mailbox command returns successfully,
 253  * it will set internal async event support flag to 1; otherwise, it will
 254  * set internal async event support flag to 0.
 255  **/
 256 static void
 257 lpfc_config_async_cmpl(struct lpfc_hba * phba, LPFC_MBOXQ_t * pmboxq)
 258 {
 259         if (pmboxq->u.mb.mbxStatus == MBX_SUCCESS)
 260                 phba->temp_sensor_support = 1;
 261         else
 262                 phba->temp_sensor_support = 0;
 263         mempool_free(pmboxq, phba->mbox_mem_pool);
 264         return;
 265 }
 266
 267 /**
 268  * lpfc_dump_wakeup_param_cmpl - dump memory mailbox command completion handler
 269  * @phba: pointer to lpfc hba data structure.
 270  * @pmboxq: pointer to the driver internal queue element for mailbox command.
 271  *
 272  * This is the completion handler for dump mailbox command for getting
 273  * wake up parameters. When this command complete, the response contain
 274  * Option rom version of the HBA. This function translate the version number
 275  * into a human readable string and store it in OptionROMVersion.
 276  **/
 277 static void
 278 lpfc_dump_wakeup_param_cmpl(struct lpfc_hba *phba, LPFC_MBOXQ_t *pmboxq)
 279 {
 280         struct prog_id *prg;
 281         uint32_t prog_id_word;
 282         char dist = ' ';
 283         /* character array used for decoding dist type. */
 284         char dist_char[] = "nabx";
 285
 286         if (pmboxq->u.mb.mbxStatus != MBX_SUCCESS) {
 287                 mempool_free(pmboxq, phba->mbox_mem_pool);
 288                 return;
 289         }
 290
 291         prg = (struct prog_id *) &prog_id_word;
 292
 293         /* word 7 contain option rom version */
 294         prog_id_word = pmboxq->u.mb.un.varWords[7];
 295
 296         /* Decode the Option rom version word to a readable string */
 297         if (prg->dist < 4)
 298                 dist = dist_char[prg->dist];
 299
 300         if ((prg->dist == 3) && (prg->num == 0))
 301                 sprintf(phba->OptionROMVersion, "%d.%d%d",
 302                         prg->ver, prg->rev, prg->lev);
 303         else
 304                 sprintf(phba->OptionROMVersion, "%d.%d%d%c%d",
 305                         prg->ver, prg->rev, prg->lev,
 306                         dist, prg->num);
 307         mempool_free(pmboxq, phba->mbox_mem_pool);
 308         return;
 309 }
 310
 311 /**
 312  * lpfc_update_vport_wwn - Updates the fc_nodename, fc_portname,
 313  *      cfg_soft_wwnn, cfg_soft_wwpn
 314  * @vport: pointer to lpfc vport data structure.
 315  *
 316  *
 317  * Return codes
 318  *   None.
 319  **/
 320 void
 321 lpfc_update_vport_wwn(struct lpfc_vport *vport)
 322 {
 323         /* If the soft name exists then update it using the service params */
 324         if (vport->phba->cfg_soft_wwnn)
 325                 u64_to_wwn(vport->phba->cfg_soft_wwnn,
 326                            vport->fc_sparam.nodeName.u.wwn);
 327         if (vport->phba->cfg_soft_wwpn)
 328                 u64_to_wwn(vport->phba->cfg_soft_wwpn,
 329                            vport->fc_sparam.portName.u.wwn);
 330
 331         /*
 332          * If the name is empty or there exists a soft name
 333          * then copy the service params name, otherwise use the fc name
 334          */
 335         if (vport->fc_nodename.u.wwn[0] == 0 || vport->phba->cfg_soft_wwnn)
 336                 memcpy(&vport->fc_nodename, &vport->fc_sparam.nodeName,
 337                         sizeof(struct lpfc_name));
 338         else
 339                 memcpy(&vport->fc_sparam.nodeName, &vport->fc_nodename,
 340                         sizeof(struct lpfc_name));
 341
 342         if (vport->fc_portname.u.wwn[0] == 0 || vport->phba->cfg_soft_wwpn)
 343                 memcpy(&vport->fc_portname, &vport->fc_sparam.portName,
 344                         sizeof(struct lpfc_name));
 345         else
 346                 memcpy(&vport->fc_sparam.portName, &vport->fc_portname,
 347                         sizeof(struct lpfc_name));
 348 }
 349
 350 /**
 351  * lpfc_config_port_post - Perform lpfc initialization after config port
 352  * @phba: pointer to lpfc hba data structure.
 353  *
 354  * This routine will do LPFC initialization after the CONFIG_PORT mailbox
 355  * command call. It performs all internal resource and state setups on the
 356  * port: post IOCB buffers, enable appropriate host interrupt attentions,
 357  * ELS ring timers, etc.
 358  *
 359  * Return codes
 360  *   0 - success.
 361  *   Any other value - error.
 362  **/
 363 int
 364 lpfc_config_port_post(struct lpfc_hba *phba)
 365 {
 366         struct lpfc_vport *vport = phba->pport;
 367         struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
 368         LPFC_MBOXQ_t *pmb;
 369         MAILBOX_t *mb;
 370         struct lpfc_dmabuf *mp;
 371         struct lpfc_sli *psli = &phba->sli;
 372         uint32_t status, timeout;
 373         int i, j;
 374         int rc;
 375
 376         spin_lock_irq(&phba->hbalock);
 377         /*
 378          * If the Config port completed correctly the HBA is not
 379          * over heated any more.
 380          */
 381         if (phba->over_temp_state == HBA_OVER_TEMP)
 382                 phba->over_temp_state = HBA_NORMAL_TEMP;
 383         spin_unlock_irq(&phba->hbalock);
 384
 385         pmb = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
 386         if (!pmb) {
 387                 phba->link_state = LPFC_HBA_ERROR;
 388                 return -ENOMEM;
 389         }
 390         mb = &pmb->u.mb;
 391
 392         /* Get login parameters for NID.  */
 393         rc = lpfc_read_sparam(phba, pmb, 0);
 394         if (rc) {
 395                 mempool_free(pmb, phba->mbox_mem_pool);
 396                 return -ENOMEM;
 397         }
 398
 399         pmb->vport = vport;
 400         if (lpfc_sli_issue_mbox(phba, pmb, MBX_POLL) != MBX_SUCCESS) {
 401                 lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
 402                                 "0448 Adapter failed init, mbxCmd x%x "
 403                                 "READ_SPARM mbxStatus x%x\n",
 404                                 mb->mbxCommand, mb->mbxStatus);
 405                 phba->link_state = LPFC_HBA_ERROR;
 406                 mp = (struct lpfc_dmabuf *) pmb->context1;
 407                 mempool_free(pmb, phba->mbox_mem_pool);
 408                 lpfc_mbuf_free(phba, mp->virt, mp->phys);
 409                 kfree(mp);
 410                 return -EIO;
 411         }
 412
 413         mp = (struct lpfc_dmabuf *) pmb->context1;
 414
 415         memcpy(&vport->fc_sparam, mp->virt, sizeof (struct serv_parm));
 416         lpfc_mbuf_free(phba, mp->virt, mp->phys);
 417         kfree(mp);
 418         pmb->context1 = NULL;
 419         lpfc_update_vport_wwn(vport);
 420
 421         /* Update the fc_host data structures with new wwn. */
 422         fc_host_node_name(shost) = wwn_to_u64(vport->fc_nodename.u.wwn);
 423         fc_host_port_name(shost) = wwn_to_u64(vport->fc_portname.u.wwn);
 424         fc_host_max_npiv_vports(shost) = phba->max_vpi;
 425
 426         /* If no serial number in VPD data, use low 6 bytes of WWNN */
 427         /* This should be consolidated into parse_vpd ? - mr */
 428         if (phba->SerialNumber[0] == 0) {
 429                 uint8_t *outptr;
 430
 431                 outptr = &vport->fc_nodename.u.s.IEEE[0];
 432                 for (i = 0; i < 12; i++) {
 433                         status = *outptr++;
 434                         j = ((status & 0xf0) >> 4);
 435                         if (j <= 9)
 436                                 phba->SerialNumber[i] =
 437                                     (char)((uint8_t) 0x30 + (uint8_t) j);
 438                         else
 439                                 phba->SerialNumber[i] =
 440                                     (char)((uint8_t) 0x61 + (uint8_t) (j - 10));
 441                         i++;
 442                         j = (status & 0xf);
 443                         if (j <= 9)
 444                                 phba->SerialNumber[i] =
 445                                     (char)((uint8_t) 0x30 + (uint8_t) j);
 446                         else
 447                                 phba->SerialNumber[i] =
 448                                     (char)((uint8_t) 0x61 + (uint8_t) (j - 10));
 449                 }
 450         }
 451
 452         lpfc_read_config(phba, pmb);
 453         pmb->vport = vport;
 454         if (lpfc_sli_issue_mbox(phba, pmb, MBX_POLL) != MBX_SUCCESS) {
 455                 lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
 456                                 "0453 Adapter failed to init, mbxCmd x%x "
 457                                 "READ_CONFIG, mbxStatus x%x\n",
 458                                 mb->mbxCommand, mb->mbxStatus);
 459                 phba->link_state = LPFC_HBA_ERROR;
 460                 mempool_free( pmb, phba->mbox_mem_pool);
 461                 return -EIO;
 462         }
 463
 464         /* Check if the port is disabled */
 465         lpfc_sli_read_link_ste(phba);
 466
 467         /* Reset the DFT_HBA_Q_DEPTH to the max xri  */
 468         if (phba->cfg_hba_queue_depth > (mb->un.varRdConfig.max_xri+1))
 469                 phba->cfg_hba_queue_depth =
 470                         (mb->un.varRdConfig.max_xri + 1) -
 471                                         lpfc_sli4_get_els_iocb_cnt(phba);
 472
 473         phba->lmt = mb->un.varRdConfig.lmt;
 474
 475         /* Get the default values for Model Name and Description */
 476         lpfc_get_hba_model_desc(phba, phba->ModelName, phba->ModelDesc);
 477
 478         if ((phba->cfg_link_speed > LPFC_USER_LINK_SPEED_16G)
 479             || ((phba->cfg_link_speed == LPFC_USER_LINK_SPEED_1G)
 480                 && !(phba->lmt & LMT_1Gb))
 481             || ((phba->cfg_link_speed == LPFC_USER_LINK_SPEED_2G)
 482                 && !(phba->lmt & LMT_2Gb))
 483             || ((phba->cfg_link_speed == LPFC_USER_LINK_SPEED_4G)
 484                 && !(phba->lmt & LMT_4Gb))
 485             || ((phba->cfg_link_speed == LPFC_USER_LINK_SPEED_8G)
 486                 && !(phba->lmt & LMT_8Gb))
 487             || ((phba->cfg_link_speed == LPFC_USER_LINK_SPEED_10G)
 488                 && !(phba->lmt & LMT_10Gb))
 489             || ((phba->cfg_link_speed == LPFC_USER_LINK_SPEED_16G)
 490                 && !(phba->lmt & LMT_16Gb))) {
 491                 /* Reset link speed to auto */
 492                 lpfc_printf_log(phba, KERN_ERR, LOG_LINK_EVENT,
 493                         "1302 Invalid speed for this board: "
 494                         "Reset link speed to auto: x%x\n",
 495                         phba->cfg_link_speed);
 496                         phba->cfg_link_speed = LPFC_USER_LINK_SPEED_AUTO;
 497         }
 498
 499         phba->link_state = LPFC_LINK_DOWN;
 500
 501         /* Only process IOCBs on ELS ring till hba_state is READY */
 502         if (psli->ring[psli->extra_ring].cmdringaddr)
 503                 psli->ring[psli->extra_ring].flag |= LPFC_STOP_IOCB_EVENT;
 504         if (psli->ring[psli->fcp_ring].cmdringaddr)
 505                 psli->ring[psli->fcp_ring].flag |= LPFC_STOP_IOCB_EVENT;
 506         if (psli->ring[psli->next_ring].cmdringaddr)
 507                 psli->ring[psli->next_ring].flag |= LPFC_STOP_IOCB_EVENT;
 508
 509         /* Post receive buffers for desired rings */
 510         if (phba->sli_rev != 3)
 511                 lpfc_post_rcv_buf(phba);
 512
 513         /*
 514          * Configure HBA MSI-X attention conditions to messages if MSI-X mode
 515          */
 516         if (phba->intr_type == MSIX) {
 517                 rc = lpfc_config_msi(phba, pmb);
 518                 if (rc) {
 519                         mempool_free(pmb, phba->mbox_mem_pool);
 520                         return -EIO;
 521                 }
 522                 rc = lpfc_sli_issue_mbox(phba, pmb, MBX_POLL);
 523                 if (rc != MBX_SUCCESS) {
 524                         lpfc_printf_log(phba, KERN_ERR, LOG_MBOX,
 525                                         "0352 Config MSI mailbox command "
 526                                         "failed, mbxCmd x%x, mbxStatus x%x\n",
 527                                         pmb->u.mb.mbxCommand,
 528                                         pmb->u.mb.mbxStatus);
 529                         mempool_free(pmb, phba->mbox_mem_pool);
 530                         return -EIO;
 531                 }
 532         }
 533
 534         spin_lock_irq(&phba->hbalock);
 535         /* Initialize ERATT handling flag */
 536         phba->hba_flag &= ~HBA_ERATT_HANDLED;
 537
 538         /* Enable appropriate host interrupts */
 539         if (lpfc_readl(phba->HCregaddr, &status)) {
 540                 spin_unlock_irq(&phba->hbalock);
 541                 return -EIO;
 542         }
 543         status |= HC_MBINT_ENA | HC_ERINT_ENA | HC_LAINT_ENA;
 544         if (psli->num_rings > 0)
 545                 status |= HC_R0INT_ENA;
 546         if (psli->num_rings > 1)
 547                 status |= HC_R1INT_ENA;
 548         if (psli->num_rings > 2)
 549                 status |= HC_R2INT_ENA;
 550         if (psli->num_rings > 3)
 551                 status |= HC_R3INT_ENA;
 552
 553         if ((phba->cfg_poll & ENABLE_FCP_RING_POLLING) &&
 554             (phba->cfg_poll & DISABLE_FCP_RING_INT))
 555                 status &= ~(HC_R0INT_ENA);
 556
 557         writel(status, phba->HCregaddr);
 558         readl(phba->HCregaddr); /* flush */
 559         spin_unlock_irq(&phba->hbalock);
 560
 561         /* Set up ring-0 (ELS) timer */
 562         timeout = phba->fc_ratov * 2;
 563         mod_timer(&vport->els_tmofunc, jiffies + HZ * timeout);
 564         /* Set up heart beat (HB) timer */
 565         mod_timer(&phba->hb_tmofunc, jiffies + HZ * LPFC_HB_MBOX_INTERVAL);
 566         phba->hb_outstanding = 0;
 567         phba->last_completion_time = jiffies;
 568         /* Set up error attention (ERATT) polling timer */
 569         mod_timer(&phba->eratt_poll, jiffies + HZ * LPFC_ERATT_POLL_INTERVAL);
 570
 571         if (phba->hba_flag & LINK_DISABLED) {
 572                 lpfc_printf_log(phba,
 573                         KERN_ERR, LOG_INIT,
 574                         "2598 Adapter Link is disabled.\n");
 575                 lpfc_down_link(phba, pmb);
 576                 pmb->mbox_cmpl = lpfc_sli_def_mbox_cmpl;
 577                 rc = lpfc_sli_issue_mbox(phba, pmb, MBX_NOWAIT);
 578                 if ((rc != MBX_SUCCESS) && (rc != MBX_BUSY)) {
 579                         lpfc_printf_log(phba,
 580                         KERN_ERR, LOG_INIT,
 581                         "2599 Adapter failed to issue DOWN_LINK"
 582                         " mbox command rc 0x%x\n", rc);
 583
 584                         mempool_free(pmb, phba->mbox_mem_pool);
 585                         return -EIO;
 586                 }
 587         } else if (phba->cfg_suppress_link_up == LPFC_INITIALIZE_LINK) {
 588                 lpfc_init_link(phba, pmb, phba->cfg_topology,
 589                         phba->cfg_link_speed);
 590                 pmb->mbox_cmpl = lpfc_sli_def_mbox_cmpl;
 591                 lpfc_set_loopback_flag(phba);
 592                 rc = lpfc_sli_issue_mbox(phba, pmb, MBX_NOWAIT);
 593                 if (rc != MBX_SUCCESS) {
 594                         lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
 595                                 "0454 Adapter failed to init, mbxCmd x%x "
 596                                 "INIT_LINK, mbxStatus x%x\n",
 597                                 mb->mbxCommand, mb->mbxStatus);
 598
 599                         /* Clear all interrupt enable conditions */
 600                         writel(0, phba->HCregaddr);
 601                         readl(phba->HCregaddr); /* flush */
 602                         /* Clear all pending interrupts */
 603                         writel(0xffffffff, phba->HAregaddr);
 604                         readl(phba->HAregaddr); /* flush */
 605                         phba->link_state = LPFC_HBA_ERROR;
 606                         if (rc != MBX_BUSY)
 607                                 mempool_free(pmb, phba->mbox_mem_pool);
 608                         return -EIO;
 609                 }
 610         }
 611         /* MBOX buffer will be freed in mbox compl */
 612         pmb = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
 613         if (!pmb) {
 614                 phba->link_state = LPFC_HBA_ERROR;
 615                 return -ENOMEM;
 616         }
 617
 618         lpfc_config_async(phba, pmb, LPFC_ELS_RING);
 619         pmb->mbox_cmpl = lpfc_config_async_cmpl;
 620         pmb->vport = phba->pport;
 621         rc = lpfc_sli_issue_mbox(phba, pmb, MBX_NOWAIT);
 622
 623         if ((rc != MBX_BUSY) && (rc != MBX_SUCCESS)) {
 624                 lpfc_printf_log(phba,
 625                                 KERN_ERR,
 626                                 LOG_INIT,
 627                                 "0456 Adapter failed to issue "
 628                                 "ASYNCEVT_ENABLE mbox status x%x\n",
 629                                 rc);
 630                 mempool_free(pmb, phba->mbox_mem_pool);
 631         }
 632
 633         /* Get Option rom version */
 634         pmb = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
 635         if (!pmb) {
 636                 phba->link_state = LPFC_HBA_ERROR;
 637                 return -ENOMEM;
 638         }
 639
 640         lpfc_dump_wakeup_param(phba, pmb);
 641         pmb->mbox_cmpl = lpfc_dump_wakeup_param_cmpl;
 642         pmb->vport = phba->pport;
 643         rc = lpfc_sli_issue_mbox(phba, pmb, MBX_NOWAIT);
 644
 645         if ((rc != MBX_BUSY) && (rc != MBX_SUCCESS)) {
 646                 lpfc_printf_log(phba, KERN_ERR, LOG_INIT, "0435 Adapter failed "
 647                                 "to get Option ROM version status x%x\n", rc);
 648                 mempool_free(pmb, phba->mbox_mem_pool);
 649         }
 650
 651         return 0;
 652 }
 653
 654 /**
 655  * lpfc_hba_init_link - Initialize the FC link
 656  * @phba: pointer to lpfc hba data structure.
 657  * @flag: mailbox command issue mode - either MBX_POLL or MBX_NOWAIT
 658  *
 659  * This routine will issue the INIT_LINK mailbox command call.
 660  * It is available to other drivers through the lpfc_hba data
 661  * structure for use as a delayed link up mechanism with the
 662  * module parameter lpfc_suppress_link_up.
 663  *
 664  * Return code
 665  *              0 - success
 666  *              Any other value - error
 667  **/
 668 int
 669 lpfc_hba_init_link(struct lpfc_hba *phba, uint32_t flag)
 670 {
 671         struct lpfc_vport *vport = phba->pport;
 672         LPFC_MBOXQ_t *pmb;
 673         MAILBOX_t *mb;
 674         int rc;
 675
 676         pmb = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
 677         if (!pmb) {
 678                 phba->link_state = LPFC_HBA_ERROR;
 679                 return -ENOMEM;
 680         }
 681         mb = &pmb->u.mb;
 682         pmb->vport = vport;
 683
 684         lpfc_init_link(phba, pmb, phba->cfg_topology, phba->cfg_link_speed);
 685         pmb->mbox_cmpl = lpfc_sli_def_mbox_cmpl;
 686         lpfc_set_loopback_flag(phba);
 687         rc = lpfc_sli_issue_mbox(phba, pmb, flag);
 688         if ((rc != MBX_BUSY) && (rc != MBX_SUCCESS)) {
 689                 lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
 690                         "0498 Adapter failed to init, mbxCmd x%x "
 691                         "INIT_LINK, mbxStatus x%x\n",
 692                         mb->mbxCommand, mb->mbxStatus);
 693                 if (phba->sli_rev <= LPFC_SLI_REV3) {
 694                         /* Clear all interrupt enable conditions */
 695                         writel(0, phba->HCregaddr);
 696                         readl(phba->HCregaddr); /* flush */
 697                         /* Clear all pending interrupts */
 698                         writel(0xffffffff, phba->HAregaddr);
 699                         readl(phba->HAregaddr); /* flush */
 700                 }
 701                 phba->link_state = LPFC_HBA_ERROR;
 702                 if (rc != MBX_BUSY || flag == MBX_POLL)
 703                         mempool_free(pmb, phba->mbox_mem_pool);
 704                 return -EIO;
 705         }
 706         phba->cfg_suppress_link_up = LPFC_INITIALIZE_LINK;
 707         if (flag == MBX_POLL)
 708                 mempool_free(pmb, phba->mbox_mem_pool);
 709
 710         return 0;
 711 }
 712
 713 /**
 714  * lpfc_hba_down_link - this routine downs the FC link
 715  * @phba: pointer to lpfc hba data structure.
 716  * @flag: mailbox command issue mode - either MBX_POLL or MBX_NOWAIT
 717  *
 718  * This routine will issue the DOWN_LINK mailbox command call.
 719  * It is available to other drivers through the lpfc_hba data
 720  * structure for use to stop the link.
 721  *
 722  * Return code
 723  *              0 - success
 724  *              Any other value - error
 725  **/
 726 int
 727 lpfc_hba_down_link(struct lpfc_hba *phba, uint32_t flag)
 728 {
 729         LPFC_MBOXQ_t *pmb;
 730         int rc;
 731
 732         pmb = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
 733         if (!pmb) {
 734                 phba->link_state = LPFC_HBA_ERROR;
 735                 return -ENOMEM;
 736         }
 737
 738         lpfc_printf_log(phba,
 739                 KERN_ERR, LOG_INIT,
 740                 "0491 Adapter Link is disabled.\n");
 741         lpfc_down_link(phba, pmb);
 742         pmb->mbox_cmpl = lpfc_sli_def_mbox_cmpl;
 743         rc = lpfc_sli_issue_mbox(phba, pmb, flag);
 744         if ((rc != MBX_SUCCESS) && (rc != MBX_BUSY)) {
 745                 lpfc_printf_log(phba,
 746                 KERN_ERR, LOG_INIT,
 747                 "2522 Adapter failed to issue DOWN_LINK"
 748                 " mbox command rc 0x%x\n", rc);
 749
 750                 mempool_free(pmb, phba->mbox_mem_pool);
 751                 return -EIO;
 752         }
 753         if (flag == MBX_POLL)
 754                 mempool_free(pmb, phba->mbox_mem_pool);
 755
 756         return 0;
 757 }
 758
 759 /**
 760  * lpfc_hba_down_prep - Perform lpfc uninitialization prior to HBA reset
 761  * @phba: pointer to lpfc HBA data structure.
 762  *
 763  * This routine will do LPFC uninitialization before the HBA is reset when
 764  * bringing down the SLI Layer.
 765  *
 766  * Return codes
 767  *   0 - success.
 768  *   Any other value - error.
 769  **/
 770 int
 771 lpfc_hba_down_prep(struct lpfc_hba *phba)
 772 {
 773         struct lpfc_vport **vports;
 774         int i;
 775
 776         if (phba->sli_rev <= LPFC_SLI_REV3) {
 777                 /* Disable interrupts */
 778                 writel(0, phba->HCregaddr);
 779                 readl(phba->HCregaddr); /* flush */
 780         }
 781
 782         if (phba->pport->load_flag & FC_UNLOADING)
 783                 lpfc_cleanup_discovery_resources(phba->pport);
 784         else {
 785                 vports = lpfc_create_vport_work_array(phba);
 786                 if (vports != NULL)
 787                         for (i = 0; i <= phba->max_vports &&
 788                                 vports[i] != NULL; i++)
 789                                 lpfc_cleanup_discovery_resources(vports[i]);
 790                 lpfc_destroy_vport_work_array(phba, vports);
 791         }
 792         return 0;
 793 }
 794
 795 /**
 796  * lpfc_hba_down_post_s3 - Perform lpfc uninitialization after HBA reset
 797  * @phba: pointer to lpfc HBA data structure.
 798  *
 799  * This routine will do uninitialization after the HBA is reset when bring
 800  * down the SLI Layer.
 801  *
 802  * Return codes
 803  *   0 - success.
 804  *   Any other value - error.
 805  **/
 806 static int
 807 lpfc_hba_down_post_s3(struct lpfc_hba *phba)
 808 {
 809         struct lpfc_sli *psli = &phba->sli;
 810         struct lpfc_sli_ring *pring;
 811         struct lpfc_dmabuf *mp, *next_mp;
 812         LIST_HEAD(completions);
 813         int i;
 814
 815         if (phba->sli3_options & LPFC_SLI3_HBQ_ENABLED)
 816                 lpfc_sli_hbqbuf_free_all(phba);
 817         else {
 818                 /* Cleanup preposted buffers on the ELS ring */
 819                 pring = &psli->ring[LPFC_ELS_RING];
 820                 list_for_each_entry_safe(mp, next_mp, &pring->postbufq, list) {
 821                         list_del(&mp->list);
 822                         pring->postbufq_cnt--;
 823                         lpfc_mbuf_free(phba, mp->virt, mp->phys);
 824                         kfree(mp);
 825                 }
 826         }
 827
 828         spin_lock_irq(&phba->hbalock);
 829         for (i = 0; i < psli->num_rings; i++) {
 830                 pring = &psli->ring[i];
 831
 832                 /* At this point in time the HBA is either reset or DOA. Either
 833                  * way, nothing should be on txcmplq as it will NEVER complete.
 834                  */
 835                 list_splice_init(&pring->txcmplq, &completions);
 836                 pring->txcmplq_cnt = 0;
 837                 spin_unlock_irq(&phba->hbalock);
 838
 839                 /* Cancel all the IOCBs from the completions list */
 840                 lpfc_sli_cancel_iocbs(phba, &completions, IOSTAT_LOCAL_REJECT,
 841                                       IOERR_SLI_ABORTED);
 842
 843                 lpfc_sli_abort_iocb_ring(phba, pring);
 844                 spin_lock_irq(&phba->hbalock);
 845         }
 846         spin_unlock_irq(&phba->hbalock);
 847
 848         return 0;
 849 }
 850
 851 /**
 852  * lpfc_hba_down_post_s4 - Perform lpfc uninitialization after HBA reset
 853  * @phba: pointer to lpfc HBA data structure.
 854  *
 855  * This routine will do uninitialization after the HBA is reset when bring
 856  * down the SLI Layer.
 857  *
 858  * Return codes
 859  *   0 - success.
 860  *   Any other value - error.
 861  **/
 862 static int
 863 lpfc_hba_down_post_s4(struct lpfc_hba *phba)
 864 {
 865         struct lpfc_scsi_buf *psb, *psb_next;
 866         LIST_HEAD(aborts);
 867         int ret;
 868         unsigned long iflag = 0;
 869         struct lpfc_sglq *sglq_entry = NULL;
 870
 871         ret = lpfc_hba_down_post_s3(phba);
 872         if (ret)
 873                 return ret;
 874         /* At this point in time the HBA is either reset or DOA. Either
 875          * way, nothing should be on lpfc_abts_els_sgl_list, it needs to be
 876          * on the lpfc_sgl_list so that it can either be freed if the
 877          * driver is unloading or reposted if the driver is restarting
 878          * the port.
 879          */
 880         spin_lock_irq(&phba->hbalock);  /* required for lpfc_sgl_list and */
 881                                         /* scsl_buf_list */
 882         /* abts_sgl_list_lock required because worker thread uses this
 883          * list.
 884          */
 885         spin_lock(&phba->sli4_hba.abts_sgl_list_lock);
 886         list_for_each_entry(sglq_entry,
 887                 &phba->sli4_hba.lpfc_abts_els_sgl_list, list)
 888                 sglq_entry->state = SGL_FREED;
 889
 890         list_splice_init(&phba->sli4_hba.lpfc_abts_els_sgl_list,
 891                         &phba->sli4_hba.lpfc_sgl_list);
 892         spin_unlock(&phba->sli4_hba.abts_sgl_list_lock);
 893         /* abts_scsi_buf_list_lock required because worker thread uses this
 894          * list.
 895          */
 896         spin_lock(&phba->sli4_hba.abts_scsi_buf_list_lock);
 897         list_splice_init(&phba->sli4_hba.lpfc_abts_scsi_buf_list,
 898                         &aborts);
 899         spin_unlock(&phba->sli4_hba.abts_scsi_buf_list_lock);
 900         spin_unlock_irq(&phba->hbalock);
 901
 902         list_for_each_entry_safe(psb, psb_next, &aborts, list) {
 903                 psb->pCmd = NULL;
 904                 psb->status = IOSTAT_SUCCESS;
 905         }
 906         spin_lock_irqsave(&phba->scsi_buf_list_lock, iflag);
 907         list_splice(&aborts, &phba->lpfc_scsi_buf_list);
 908         spin_unlock_irqrestore(&phba->scsi_buf_list_lock, iflag);
 909         return 0;
 910 }
 911
 912 /**
 913  * lpfc_hba_down_post - Wrapper func for hba down post routine
 914  * @phba: pointer to lpfc HBA data structure.
 915  *
 916  * This routine wraps the actual SLI3 or SLI4 routine for performing
 917  * uninitialization after the HBA is reset when bring down the SLI Layer.
 918  *
 919  * Return codes
 920  *   0 - success.
 921  *   Any other value - error.
 922  **/
 923 int
 924 lpfc_hba_down_post(struct lpfc_hba *phba)
 925 {
 926         return (*phba->lpfc_hba_down_post)(phba);
 927 }
 928
 929 /**
 930  * lpfc_hb_timeout - The HBA-timer timeout handler
 931  * @ptr: unsigned long holds the pointer to lpfc hba data structure.
 932  *
 933  * This is the HBA-timer timeout handler registered to the lpfc driver. When
 934  * this timer fires, a HBA timeout event shall be posted to the lpfc driver
 935  * work-port-events bitmap and the worker thread is notified. This timeout
 936  * event will be used by the worker thread to invoke the actual timeout
 937  * handler routine, lpfc_hb_timeout_handler. Any periodical operations will
 938  * be performed in the timeout handler and the HBA timeout event bit shall
 939  * be cleared by the worker thread after it has taken the event bitmap out.
 940  **/
 941 static void
 942 lpfc_hb_timeout(unsigned long ptr)
 943 {
 944         struct lpfc_hba *phba;
 945         uint32_t tmo_posted;
 946         unsigned long iflag;
 947
 948         phba = (struct lpfc_hba *)ptr;
 949
 950         /* Check for heart beat timeout conditions */
 951         spin_lock_irqsave(&phba->pport->work_port_lock, iflag);
 952         tmo_posted = phba->pport->work_port_events & WORKER_HB_TMO;
 953         if (!tmo_posted)
 954                 phba->pport->work_port_events |= WORKER_HB_TMO;
 955         spin_unlock_irqrestore(&phba->pport->work_port_lock, iflag);
 956
 957         /* Tell the worker thread there is work to do */
 958         if (!tmo_posted)
 959                 lpfc_worker_wake_up(phba);
 960         return;
 961 }
 962
 963 /**
 964  * lpfc_rrq_timeout - The RRQ-timer timeout handler
 965  * @ptr: unsigned long holds the pointer to lpfc hba data structure.
 966  *
 967  * This is the RRQ-timer timeout handler registered to the lpfc driver. When
 968  * this timer fires, a RRQ timeout event shall be posted to the lpfc driver
 969  * work-port-events bitmap and the worker thread is notified. This timeout
 970  * event will be used by the worker thread to invoke the actual timeout
 971  * handler routine, lpfc_rrq_handler. Any periodical operations will
 972  * be performed in the timeout handler and the RRQ timeout event bit shall
 973  * be cleared by the worker thread after it has taken the event bitmap out.
 974  **/
 975 static void
 976 lpfc_rrq_timeout(unsigned long ptr)
 977 {
 978         struct lpfc_hba *phba;
 979         unsigned long iflag;
 980
 981         phba = (struct lpfc_hba *)ptr;
 982         spin_lock_irqsave(&phba->pport->work_port_lock, iflag);
 983         phba->hba_flag |= HBA_RRQ_ACTIVE;
 984         spin_unlock_irqrestore(&phba->pport->work_port_lock, iflag);
 985         lpfc_worker_wake_up(phba);
 986 }
 987
 988 /**
 989  * lpfc_hb_mbox_cmpl - The lpfc heart-beat mailbox command callback function
 990  * @phba: pointer to lpfc hba data structure.
 991  * @pmboxq: pointer to the driver internal queue element for mailbox command.
 992  *
 993  * This is the callback function to the lpfc heart-beat mailbox command.
 994  * If configured, the lpfc driver issues the heart-beat mailbox command to
 995  * the HBA every LPFC_HB_MBOX_INTERVAL (current 5) seconds. At the time the
 996  * heart-beat mailbox command is issued, the driver shall set up heart-beat
 997  * timeout timer to LPFC_HB_MBOX_TIMEOUT (current 30) seconds and marks
 998  * heart-beat outstanding state. Once the mailbox command comes back and
 999  * no error conditions detected, the heart-beat mailbox command timer is
1000  * reset to LPFC_HB_MBOX_INTERVAL seconds and the heart-beat outstanding
1001  * state is cleared for the next heart-beat. If the timer expired with the
1002  * heart-beat outstanding state set, the driver will put the HBA offline.
1003  **/
1004 static void
1005 lpfc_hb_mbox_cmpl(struct lpfc_hba * phba, LPFC_MBOXQ_t * pmboxq)
1006 {
1007         unsigned long drvr_flag;
1008
1009         spin_lock_irqsave(&phba->hbalock, drvr_flag);
1010         phba->hb_outstanding = 0;
1011         spin_unlock_irqrestore(&phba->hbalock, drvr_flag);
1012
1013         /* Check and reset heart-beat timer is necessary */
1014         mempool_free(pmboxq, phba->mbox_mem_pool);
1015         if (!(phba->pport->fc_flag & FC_OFFLINE_MODE) &&
1016                 !(phba->link_state == LPFC_HBA_ERROR) &&
1017                 !(phba->pport->load_flag & FC_UNLOADING))
1018                 mod_timer(&phba->hb_tmofunc,
1019                         jiffies + HZ * LPFC_HB_MBOX_INTERVAL);
1020         return;
1021 }
1022
1023 /**
1024  * lpfc_hb_timeout_handler - The HBA-timer timeout handler
1025  * @phba: pointer to lpfc hba data structure.
1026  *
1027  * This is the actual HBA-timer timeout handler to be invoked by the worker
1028  * thread whenever the HBA timer fired and HBA-timeout event posted. This
1029  * handler performs any periodic operations needed for the device. If such
1030  * periodic event has already been attended to either in the interrupt handler
1031  * or by processing slow-ring or fast-ring events within the HBA-timer
1032  * timeout window (LPFC_HB_MBOX_INTERVAL), this handler just simply resets
1033  * the timer for the next timeout period. If lpfc heart-beat mailbox command
1034  * is configured and there is no heart-beat mailbox command outstanding, a
1035  * heart-beat mailbox is issued and timer set properly. Otherwise, if there
1036  * has been a heart-beat mailbox command outstanding, the HBA shall be put
1037  * to offline.
1038  **/
1039 void
1040 lpfc_hb_timeout_handler(struct lpfc_hba *phba)
1041 {
1042         struct lpfc_vport **vports;
1043         LPFC_MBOXQ_t *pmboxq;
1044         struct lpfc_dmabuf *buf_ptr;
1045         int retval, i;
1046         struct lpfc_sli *psli = &phba->sli;
1047         LIST_HEAD(completions);
1048
1049         vports = lpfc_create_vport_work_array(phba);
1050         if (vports != NULL)
1051                 for (i = 0; i <= phba->max_vports && vports[i] != NULL; i++)
1052                         lpfc_rcv_seq_check_edtov(vports[i]);
1053         lpfc_destroy_vport_work_array(phba, vports);
1054
1055         if ((phba->link_state == LPFC_HBA_ERROR) ||
1056                 (phba->pport->load_flag & FC_UNLOADING) ||
1057                 (phba->pport->fc_flag & FC_OFFLINE_MODE))
1058                 return;
1059
1060         spin_lock_irq(&phba->pport->work_port_lock);
1061
1062         if (time_after(phba->last_completion_time + LPFC_HB_MBOX_INTERVAL * HZ,
1063                 jiffies)) {
1064                 spin_unlock_irq(&phba->pport->work_port_lock);
1065                 if (!phba->hb_outstanding)
1066                         mod_timer(&phba->hb_tmofunc,
1067                                 jiffies + HZ * LPFC_HB_MBOX_INTERVAL);
1068                 else
1069                         mod_timer(&phba->hb_tmofunc,
1070                                 jiffies + HZ * LPFC_HB_MBOX_TIMEOUT);
1071                 return;
1072         }
1073         spin_unlock_irq(&phba->pport->work_port_lock);
1074
1075         if (phba->elsbuf_cnt &&
1076                 (phba->elsbuf_cnt == phba->elsbuf_prev_cnt)) {
1077                 spin_lock_irq(&phba->hbalock);
1078                 list_splice_init(&phba->elsbuf, &completions);
1079                 phba->elsbuf_cnt = 0;
1080                 phba->elsbuf_prev_cnt = 0;
1081                 spin_unlock_irq(&phba->hbalock);
1082
1083                 while (!list_empty(&completions)) {
1084                         list_remove_head(&completions, buf_ptr,
1085                                 struct lpfc_dmabuf, list);
1086                         lpfc_mbuf_free(phba, buf_ptr->virt, buf_ptr->phys);
1087                         kfree(buf_ptr);
1088                 }
1089         }
1090         phba->elsbuf_prev_cnt = phba->elsbuf_cnt;
1091
1092         /* If there is no heart beat outstanding, issue a heartbeat command */
1093         if (phba->cfg_enable_hba_heartbeat) {
1094                 if (!phba->hb_outstanding) {
1095                         if ((!(psli->sli_flag & LPFC_SLI_MBOX_ACTIVE)) &&
1096                                 (list_empty(&psli->mboxq))) {
1097                                 pmboxq = mempool_alloc(phba->mbox_mem_pool,
1098                                                         GFP_KERNEL);
1099                                 if (!pmboxq) {
1100                                         mod_timer(&phba->hb_tmofunc,
1101                                                  jiffies +
1102                                                  HZ * LPFC_HB_MBOX_INTERVAL);
1103                                         return;
1104                                 }
1105
1106                                 lpfc_heart_beat(phba, pmboxq);
1107                                 pmboxq->mbox_cmpl = lpfc_hb_mbox_cmpl;
1108                                 pmboxq->vport = phba->pport;
1109                                 retval = lpfc_sli_issue_mbox(phba, pmboxq,
1110                                                 MBX_NOWAIT);
1111
1112                                 if (retval != MBX_BUSY &&
1113                                         retval != MBX_SUCCESS) {
1114                                         mempool_free(pmboxq,
1115                                                         phba->mbox_mem_pool);
1116                                         mod_timer(&phba->hb_tmofunc,
1117                                                 jiffies +
1118                                                 HZ * LPFC_HB_MBOX_INTERVAL);
1119                                         return;
1120                                 }
1121                                 phba->skipped_hb = 0;
1122                                 phba->hb_outstanding = 1;
1123                         } else if (time_before_eq(phba->last_completion_time,
1124                                         phba->skipped_hb)) {
1125                                 lpfc_printf_log(phba, KERN_INFO, LOG_INIT,
1126                                         "2857 Last completion time not "
1127                                         " updated in %d ms\n",
1128                                         jiffies_to_msecs(jiffies
1129                                                  - phba->last_completion_time));
1130                         } else
1131                                 phba->skipped_hb = jiffies;
1132
1133                         mod_timer(&phba->hb_tmofunc,
1134                                   jiffies + HZ * LPFC_HB_MBOX_TIMEOUT);
1135                         return;
1136                 } else {
1137                         /*
1138                         * If heart beat timeout called with hb_outstanding set
1139                         * we need to give the hb mailbox cmd a chance to
1140                         * complete or TMO.
1141                         */
1142                         lpfc_printf_log(phba, KERN_WARNING, LOG_INIT,
1143                                         "0459 Adapter heartbeat still out"
1144                                         "standing:last compl time was %d ms.\n",
1145                                         jiffies_to_msecs(jiffies
1146                                                  - phba->last_completion_time));
1147                         mod_timer(&phba->hb_tmofunc,
1148                                   jiffies + HZ * LPFC_HB_MBOX_TIMEOUT);
1149                 }
1150         }
1151 }
1152
1153 /**
1154  * lpfc_offline_eratt - Bring lpfc offline on hardware error attention
1155  * @phba: pointer to lpfc hba data structure.
1156  *
1157  * This routine is called to bring the HBA offline when HBA hardware error
1158  * other than Port Error 6 has been detected.
1159  **/
1160 static void
1161 lpfc_offline_eratt(struct lpfc_hba *phba)
1162 {
1163         struct lpfc_sli   *psli = &phba->sli;
1164
1165         spin_lock_irq(&phba->hbalock);
1166         psli->sli_flag &= ~LPFC_SLI_ACTIVE;
1167         spin_unlock_irq(&phba->hbalock);
1168         lpfc_offline_prep(phba);
1169
1170         lpfc_offline(phba);
1171         lpfc_reset_barrier(phba);
1172         spin_lock_irq(&phba->hbalock);
1173         lpfc_sli_brdreset(phba);
1174         spin_unlock_irq(&phba->hbalock);
1175         lpfc_hba_down_post(phba);
1176         lpfc_sli_brdready(phba, HS_MBRDY);
1177         lpfc_unblock_mgmt_io(phba);
1178         phba->link_state = LPFC_HBA_ERROR;
1179         return;
1180 }
1181
1182 /**
1183  * lpfc_sli4_offline_eratt - Bring lpfc offline on SLI4 hardware error attention
1184  * @phba: pointer to lpfc hba data structure.
1185  *
1186  * This routine is called to bring a SLI4 HBA offline when HBA hardware error
1187  * other than Port Error 6 has been detected.
1188  **/
1189 static void
1190 lpfc_sli4_offline_eratt(struct lpfc_hba *phba)
1191 {
1192         lpfc_offline_prep(phba);
1193         lpfc_offline(phba);
1194         lpfc_sli4_brdreset(phba);
1195         lpfc_hba_down_post(phba);
1196         lpfc_sli4_post_status_check(phba);
1197         lpfc_unblock_mgmt_io(phba);
1198         phba->link_state = LPFC_HBA_ERROR;
1199 }
1200
1201 /**
1202  * lpfc_handle_deferred_eratt - The HBA hardware deferred error handler
1203  * @phba: pointer to lpfc hba data structure.
1204  *
1205  * This routine is invoked to handle the deferred HBA hardware error
1206  * conditions. This type of error is indicated by HBA by setting ER1
1207  * and another ER bit in the host status register. The driver will
1208  * wait until the ER1 bit clears before handling the error condition.
1209  **/
1210 static void
1211 lpfc_handle_deferred_eratt(struct lpfc_hba *phba)
1212 {
1213         uint32_t old_host_status = phba->work_hs;
1214         struct lpfc_sli_ring  *pring;
1215         struct lpfc_sli *psli = &phba->sli;
1216
1217         /* If the pci channel is offline, ignore possible errors,
1218          * since we cannot communicate with the pci card anyway.
1219          */
1220         if (pci_channel_offline(phba->pcidev)) {
1221                 spin_lock_irq(&phba->hbalock);
1222                 phba->hba_flag &= ~DEFER_ERATT;
1223                 spin_unlock_irq(&phba->hbalock);
1224                 return;
1225         }
1226
1227         lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
1228                 "0479 Deferred Adapter Hardware Error "
1229                 "Data: x%x x%x x%x\n",
1230                 phba->work_hs,
1231                 phba->work_status[0], phba->work_status[1]);
1232
1233         spin_lock_irq(&phba->hbalock);
1234         psli->sli_flag &= ~LPFC_SLI_ACTIVE;
1235         spin_unlock_irq(&phba->hbalock);
1236
1237
1238         /*
1239          * Firmware stops when it triggred erratt. That could cause the I/Os
1240          * dropped by the firmware. Error iocb (I/O) on txcmplq and let the
1241          * SCSI layer retry it after re-establishing link.
1242          */
1243         pring = &psli->ring[psli->fcp_ring];
1244         lpfc_sli_abort_iocb_ring(phba, pring);
1245
1246         /*
1247          * There was a firmware error. Take the hba offline and then
1248          * attempt to restart it.
1249          */
1250         lpfc_offline_prep(phba);
1251         lpfc_offline(phba);
1252
1253         /* Wait for the ER1 bit to clear.*/
1254         while (phba->work_hs & HS_FFER1) {
1255                 msleep(100);
1256                 if (lpfc_readl(phba->HSregaddr, &phba->work_hs)) {
1257                         phba->work_hs = UNPLUG_ERR ;
1258                         break;
1259                 }
1260                 /* If driver is unloading let the worker thread continue */
1261                 if (phba->pport->load_flag & FC_UNLOADING) {
1262                         phba->work_hs = 0;
1263                         break;
1264                 }
1265         }
1266
1267         /*
1268          * This is to ptrotect against a race condition in which
1269          * first write to the host attention register clear the
1270          * host status register.
1271          */
1272         if ((!phba->work_hs) && (!(phba->pport->load_flag & FC_UNLOADING)))
1273                 phba->work_hs = old_host_status & ~HS_FFER1;
1274
1275         spin_lock_irq(&phba->hbalock);
1276         phba->hba_flag &= ~DEFER_ERATT;
1277         spin_unlock_irq(&phba->hbalock);
1278         phba->work_status[0] = readl(phba->MBslimaddr + 0xa8);
1279         phba->work_status[1] = readl(phba->MBslimaddr + 0xac);
1280 }
1281
1282 static void
1283 lpfc_board_errevt_to_mgmt(struct lpfc_hba *phba)
1284 {
1285         struct lpfc_board_event_header board_event;
1286         struct Scsi_Host *shost;
1287
1288         board_event.event_type = FC_REG_BOARD_EVENT;
1289         board_event.subcategory = LPFC_EVENT_PORTINTERR;
1290         shost = lpfc_shost_from_vport(phba->pport);
1291         fc_host_post_vendor_event(shost, fc_get_event_number(),
1292                                   sizeof(board_event),
1293                                   (char *) &board_event,
1294                                   LPFC_NL_VENDOR_ID);
1295 }
1296
1297 /**
1298  * lpfc_handle_eratt_s3 - The SLI3 HBA hardware error handler
1299  * @phba: pointer to lpfc hba data structure.
1300  *
1301  * This routine is invoked to handle the following HBA hardware error
1302  * conditions:
1303  * 1 - HBA error attention interrupt
1304  * 2 - DMA ring index out of range
1305  * 3 - Mailbox command came back as unknown
1306  **/
1307 static void
1308 lpfc_handle_eratt_s3(struct lpfc_hba *phba)
1309 {
1310         struct lpfc_vport *vport = phba->pport;
1311         struct lpfc_sli   *psli = &phba->sli;
1312         struct lpfc_sli_ring  *pring;
1313         uint32_t event_data;
1314         unsigned long temperature;
1315         struct temp_event temp_event_data;
1316         struct Scsi_Host  *shost;
1317
1318         /* If the pci channel is offline, ignore possible errors,
1319          * since we cannot communicate with the pci card anyway.
1320          */
1321         if (pci_channel_offline(phba->pcidev)) {
1322                 spin_lock_irq(&phba->hbalock);
1323                 phba->hba_flag &= ~DEFER_ERATT;
1324                 spin_unlock_irq(&phba->hbalock);
1325                 return;
1326         }
1327
1328         /* If resets are disabled then leave the HBA alone and return */
1329         if (!phba->cfg_enable_hba_reset)
1330                 return;
1331
1332         /* Send an internal error event to mgmt application */
1333         lpfc_board_errevt_to_mgmt(phba);
1334
1335         if (phba->hba_flag & DEFER_ERATT)
1336                 lpfc_handle_deferred_eratt(phba);
1337
1338         if ((phba->work_hs & HS_FFER6) || (phba->work_hs & HS_FFER8)) {
1339                 if (phba->work_hs & HS_FFER6)
1340                         /* Re-establishing Link */
1341                         lpfc_printf_log(phba, KERN_INFO, LOG_LINK_EVENT,
1342                                         "1301 Re-establishing Link "
1343                                         "Data: x%x x%x x%x\n",
1344                                         phba->work_hs, phba->work_status[0],
1345                                         phba->work_status[1]);
1346                 if (phba->work_hs & HS_FFER8)
1347                         /* Device Zeroization */
1348                         lpfc_printf_log(phba, KERN_INFO, LOG_LINK_EVENT,
1349                                         "2861 Host Authentication device "
1350                                         "zeroization Data:x%x x%x x%x\n",
1351                                         phba->work_hs, phba->work_status[0],
1352                                         phba->work_status[1]);
1353
1354                 spin_lock_irq(&phba->hbalock);
1355                 psli->sli_flag &= ~LPFC_SLI_ACTIVE;
1356                 spin_unlock_irq(&phba->hbalock);
1357
1358                 /*
1359                 * Firmware stops when it triggled erratt with HS_FFER6.
1360                 * That could cause the I/Os dropped by the firmware.
1361                 * Error iocb (I/O) on txcmplq and let the SCSI layer
1362                 * retry it after re-establishing link.
1363                 */
1364                 pring = &psli->ring[psli->fcp_ring];
1365                 lpfc_sli_abort_iocb_ring(phba, pring);
1366
1367                 /*
1368                  * There was a firmware error.  Take the hba offline and then
1369                  * attempt to restart it.
1370                  */
1371                 lpfc_offline_prep(phba);
1372                 lpfc_offline(phba);
1373                 lpfc_sli_brdrestart(phba);
1374                 if (lpfc_online(phba) == 0) {   /* Initialize the HBA */
1375                         lpfc_unblock_mgmt_io(phba);
1376                         return;
1377                 }
1378                 lpfc_unblock_mgmt_io(phba);
1379         } else if (phba->work_hs & HS_CRIT_TEMP) {
1380                 temperature = readl(phba->MBslimaddr + TEMPERATURE_OFFSET);
1381                 temp_event_data.event_type = FC_REG_TEMPERATURE_EVENT;
1382                 temp_event_data.event_code = LPFC_CRIT_TEMP;
1383                 temp_event_data.data = (uint32_t)temperature;
1384
1385                 lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
1386                                 "0406 Adapter maximum temperature exceeded "
1387                                 "(%ld), taking this port offline "
1388                                 "Data: x%x x%x x%x\n",
1389                                 temperature, phba->work_hs,
1390                                 phba->work_status[0], phba->work_status[1]);
1391
1392                 shost = lpfc_shost_from_vport(phba->pport);
1393                 fc_host_post_vendor_event(shost, fc_get_event_number(),
1394                                           sizeof(temp_event_data),
1395                                           (char *) &temp_event_data,
1396                                           SCSI_NL_VID_TYPE_PCI
1397                                           | PCI_VENDOR_ID_EMULEX);
1398
1399                 spin_lock_irq(&phba->hbalock);
1400                 phba->over_temp_state = HBA_OVER_TEMP;
1401                 spin_unlock_irq(&phba->hbalock);
1402                 lpfc_offline_eratt(phba);
1403
1404         } else {
1405                 /* The if clause above forces this code path when the status
1406                  * failure is a value other than FFER6. Do not call the offline
1407                  * twice. This is the adapter hardware error path.
1408                  */
1409                 lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
1410                                 "0457 Adapter Hardware Error "
1411                                 "Data: x%x x%x x%x\n",
1412                                 phba->work_hs,
1413                                 phba->work_status[0], phba->work_status[1]);
1414
1415                 event_data = FC_REG_DUMP_EVENT;
1416                 shost = lpfc_shost_from_vport(vport);
1417                 fc_host_post_vendor_event(shost, fc_get_event_number(),
1418                                 sizeof(event_data), (char *) &event_data,
1419                                 SCSI_NL_VID_TYPE_PCI | PCI_VENDOR_ID_EMULEX);
1420
1421                 lpfc_offline_eratt(phba);
1422         }
1423         return;
1424 }
1425
1426 /**
1427  * lpfc_handle_eratt_s4 - The SLI4 HBA hardware error handler
1428  * @phba: pointer to lpfc hba data structure.
1429  *
1430  * This routine is invoked to handle the SLI4 HBA hardware error attention
1431  * conditions.
1432  **/
1433 static void
1434 lpfc_handle_eratt_s4(struct lpfc_hba *phba)
1435 {
1436         struct lpfc_vport *vport = phba->pport;
1437         uint32_t event_data;
1438         struct Scsi_Host *shost;
1439         uint32_t if_type;
1440         struct lpfc_register portstat_reg;
1441
1442         /* If the pci channel is offline, ignore possible errors, since
1443          * we cannot communicate with the pci card anyway.
1444          */
1445         if (pci_channel_offline(phba->pcidev))
1446                 return;
1447         /* If resets are disabled then leave the HBA alone and return */
1448         if (!phba->cfg_enable_hba_reset)
1449                 return;
1450
1451         /* Send an internal error event to mgmt application */
1452         lpfc_board_errevt_to_mgmt(phba);
1453
1454         /* For now, the actual action for SLI4 device handling is not
1455          * specified yet, just treated it as adaptor hardware failure
1456          */
1457         event_data = FC_REG_DUMP_EVENT;
1458         shost = lpfc_shost_from_vport(vport);
1459         fc_host_post_vendor_event(shost, fc_get_event_number(),
1460                                   sizeof(event_data), (char *) &event_data,
1461                                   SCSI_NL_VID_TYPE_PCI | PCI_VENDOR_ID_EMULEX);
1462
1463         if_type = bf_get(lpfc_sli_intf_if_type, &phba->sli4_hba.sli_intf);
1464         switch (if_type) {
1465         case LPFC_SLI_INTF_IF_TYPE_0:
1466                 lpfc_sli4_offline_eratt(phba);
1467                 break;
1468         case LPFC_SLI_INTF_IF_TYPE_2:
1469                 portstat_reg.word0 =
1470                         readl(phba->sli4_hba.u.if_type2.STATUSregaddr);
1471
1472                 if (bf_get(lpfc_sliport_status_oti, &portstat_reg)) {
1473                         /* TODO: Register for Overtemp async events. */
1474                         lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
1475                                 "2889 Port Overtemperature event, "
1476                                 "taking port\n");
1477                         spin_lock_irq(&phba->hbalock);
1478                         phba->over_temp_state = HBA_OVER_TEMP;
1479                         spin_unlock_irq(&phba->hbalock);
1480                         lpfc_sli4_offline_eratt(phba);
1481                         return;
1482                 }
1483                 if (bf_get(lpfc_sliport_status_rn, &portstat_reg)) {
1484                         /*
1485                          * TODO: Attempt port recovery via a port reset.
1486                          * When fully implemented, the driver should
1487                          * attempt to recover the port here and return.
1488                          * For now, log an error and take the port offline.
1489                          */
1490                         lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
1491                                         "2887 Port Error: Attempting "
1492                                         "Port Recovery\n");
1493                 }
1494                 lpfc_sli4_offline_eratt(phba);
1495                 break;
1496         case LPFC_SLI_INTF_IF_TYPE_1:
1497         default:
1498                 break;
1499         }
1500 }
1501
1502 /**
1503  * lpfc_handle_eratt - Wrapper func for handling hba error attention
1504  * @phba: pointer to lpfc HBA data structure.
1505  *
1506  * This routine wraps the actual SLI3 or SLI4 hba error attention handling
1507  * routine from the API jump table function pointer from the lpfc_hba struct.
1508  *
1509  * Return codes
1510  *   0 - success.
1511  *   Any other value - error.
1512  **/
1513 void
1514 lpfc_handle_eratt(struct lpfc_hba *phba)
1515 {
1516         (*phba->lpfc_handle_eratt)(phba);
1517 }
1518
1519 /**
1520  * lpfc_handle_latt - The HBA link event handler
1521  * @phba: pointer to lpfc hba data structure.
1522  *
1523  * This routine is invoked from the worker thread to handle a HBA host
1524  * attention link event.
1525  **/
1526 void
1527 lpfc_handle_latt(struct lpfc_hba *phba)
1528 {
1529         struct lpfc_vport *vport = phba->pport;
1530         struct lpfc_sli   *psli = &phba->sli;
1531         LPFC_MBOXQ_t *pmb;
1532         volatile uint32_t control;
1533         struct lpfc_dmabuf *mp;
1534         int rc = 0;
1535
1536         pmb = (LPFC_MBOXQ_t *)mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
1537         if (!pmb) {
1538                 rc = 1;
1539                 goto lpfc_handle_latt_err_exit;
1540         }
1541
1542         mp = kmalloc(sizeof(struct lpfc_dmabuf), GFP_KERNEL);
1543         if (!mp) {
1544                 rc = 2;
1545                 goto lpfc_handle_latt_free_pmb;
1546         }
1547
1548         mp->virt = lpfc_mbuf_alloc(phba, 0, &mp->phys);
1549         if (!mp->virt) {
1550                 rc = 3;
1551                 goto lpfc_handle_latt_free_mp;
1552         }
1553
1554         /* Cleanup any outstanding ELS commands */
1555         lpfc_els_flush_all_cmd(phba);
1556
1557         psli->slistat.link_event++;
1558         lpfc_read_topology(phba, pmb, mp);
1559         pmb->mbox_cmpl = lpfc_mbx_cmpl_read_topology;
1560         pmb->vport = vport;
1561         /* Block ELS IOCBs until we have processed this mbox command */
1562         phba->sli.ring[LPFC_ELS_RING].flag |= LPFC_STOP_IOCB_EVENT;
1563         rc = lpfc_sli_issue_mbox (phba, pmb, MBX_NOWAIT);
1564         if (rc == MBX_NOT_FINISHED) {
1565                 rc = 4;
1566                 goto lpfc_handle_latt_free_mbuf;
1567         }
1568
1569         /* Clear Link Attention in HA REG */
1570         spin_lock_irq(&phba->hbalock);
1571         writel(HA_LATT, phba->HAregaddr);
1572         readl(phba->HAregaddr); /* flush */
1573         spin_unlock_irq(&phba->hbalock);
1574
1575         return;
1576
1577 lpfc_handle_latt_free_mbuf:
1578         phba->sli.ring[LPFC_ELS_RING].flag &= ~LPFC_STOP_IOCB_EVENT;
1579         lpfc_mbuf_free(phba, mp->virt, mp->phys);
1580 lpfc_handle_latt_free_mp:
1581         kfree(mp);
1582 lpfc_handle_latt_free_pmb:
1583         mempool_free(pmb, phba->mbox_mem_pool);
1584 lpfc_handle_latt_err_exit:
1585         /* Enable Link attention interrupts */
1586         spin_lock_irq(&phba->hbalock);
1587         psli->sli_flag |= LPFC_PROCESS_LA;
1588         control = readl(phba->HCregaddr);
1589         control |= HC_LAINT_ENA;
1590         writel(control, phba->HCregaddr);
1591         readl(phba->HCregaddr); /* flush */
1592
1593         /* Clear Link Attention in HA REG */
1594         writel(HA_LATT, phba->HAregaddr);
1595         readl(phba->HAregaddr); /* flush */
1596         spin_unlock_irq(&phba->hbalock);
1597         lpfc_linkdown(phba);
1598         phba->link_state = LPFC_HBA_ERROR;
1599
1600         lpfc_printf_log(phba, KERN_ERR, LOG_MBOX,
1601                      "0300 LATT: Cannot issue READ_LA: Data:%d\n", rc);
1602
1603         return;
1604 }
1605
1606 /**
1607  * lpfc_parse_vpd - Parse VPD (Vital Product Data)
1608  * @phba: pointer to lpfc hba data structure.
1609  * @vpd: pointer to the vital product data.
1610  * @len: length of the vital product data in bytes.
1611  *
1612  * This routine parses the Vital Product Data (VPD). The VPD is treated as
1613  * an array of characters. In this routine, the ModelName, ProgramType, and
1614  * ModelDesc, etc. fields of the phba data structure will be populated.
1615  *
1616  * Return codes
1617  *   0 - pointer to the VPD passed in is NULL
1618  *   1 - success
1619  **/
1620 int
1621 lpfc_parse_vpd(struct lpfc_hba *phba, uint8_t *vpd, int len)
1622 {
1623         uint8_t lenlo, lenhi;
1624         int Length;
1625         int i, j;
1626         int finished = 0;
1627         int index = 0;
1628
1629         if (!vpd)
1630                 return 0;
1631
1632         /* Vital Product */
1633         lpfc_printf_log(phba, KERN_INFO, LOG_INIT,
1634                         "0455 Vital Product Data: x%x x%x x%x x%x\n",
1635                         (uint32_t) vpd[0], (uint32_t) vpd[1], (uint32_t) vpd[2],
1636                         (uint32_t) vpd[3]);
1637         while (!finished && (index < (len - 4))) {
1638                 switch (vpd[index]) {
1639                 case 0x82:
1640                 case 0x91:
1641                         index += 1;
1642                         lenlo = vpd[index];
1643                         index += 1;
1644                         lenhi = vpd[index];
1645                         index += 1;
1646                         i = ((((unsigned short)lenhi) << 8) + lenlo);
1647                         index += i;
1648                         break;
1649                 case 0x90:
1650                         index += 1;
1651                         lenlo = vpd[index];
1652                         index += 1;
1653                         lenhi = vpd[index];
1654                         index += 1;
1655                         Length = ((((unsigned short)lenhi) << 8) + lenlo);
1656                         if (Length > len - index)
1657                                 Length = len - index;
1658                         while (Length > 0) {
1659                         /* Look for Serial Number */
1660                         if ((vpd[index] == 'S') && (vpd[index+1] == 'N')) {
1661                                 index += 2;
1662                                 i = vpd[index];
1663                                 index += 1;
1664                                 j = 0;
1665                                 Length -= (3+i);
1666                                 while(i--) {
1667                                         phba->SerialNumber[j++] = vpd[index++];
1668                                         if (j == 31)
1669                                                 break;
1670                                 }
1671                                 phba->SerialNumber[j] = 0;
1672                                 continue;
1673                         }
1674                         else if ((vpd[index] == 'V') && (vpd[index+1] == '1')) {
1675                                 phba->vpd_flag |= VPD_MODEL_DESC;
1676                                 index += 2;
1677                                 i = vpd[index];
1678                                 index += 1;
1679                                 j = 0;
1680                                 Length -= (3+i);
1681                                 while(i--) {
1682                                         phba->ModelDesc[j++] = vpd[index++];
1683                                         if (j == 255)
1684                                                 break;
1685                                 }
1686                                 phba->ModelDesc[j] = 0;
1687                                 continue;
1688                         }
1689                         else if ((vpd[index] == 'V') && (vpd[index+1] == '2')) {
1690                                 phba->vpd_flag |= VPD_MODEL_NAME;
1691                                 index += 2;
1692                                 i = vpd[index];
1693                                 index += 1;
1694                                 j = 0;
1695                                 Length -= (3+i);
1696                                 while(i--) {
1697                                         phba->ModelName[j++] = vpd[index++];
1698                                         if (j == 79)
1699                                                 break;
1700                                 }
1701                                 phba->ModelName[j] = 0;
1702                                 continue;
1703                         }
1704                         else if ((vpd[index] == 'V') && (vpd[index+1] == '3')) {
1705                                 phba->vpd_flag |= VPD_PROGRAM_TYPE;
1706                                 index += 2;
1707                                 i = vpd[index];
1708                                 index += 1;
1709                                 j = 0;
1710                                 Length -= (3+i);
1711                                 while(i--) {
1712                                         phba->ProgramType[j++] = vpd[index++];
1713                                         if (j == 255)
1714                                                 break;
1715                                 }
1716                                 phba->ProgramType[j] = 0;
1717                                 continue;
1718                         }
1719                         else if ((vpd[index] == 'V') && (vpd[index+1] == '4')) {
1720                                 phba->vpd_flag |= VPD_PORT;
1721                                 index += 2;
1722                                 i = vpd[index];
1723                                 index += 1;
1724                                 j = 0;
1725                                 Length -= (3+i);
1726                                 while(i--) {
1727                                 phba->Port[j++] = vpd[index++];
1728                                 if (j == 19)
1729                                         break;
1730                                 }
1731                                 phba->Port[j] = 0;
1732                                 continue;
1733                         }
1734                         else {
1735                                 index += 2;
1736                                 i = vpd[index];
1737                                 index += 1;
1738                                 index += i;
1739                                 Length -= (3 + i);
1740                         }
1741                 }
1742                 finished = 0;
1743                 break;
1744                 case 0x78:
1745                         finished = 1;
1746                         break;
1747                 default:
1748                         index ++;
1749                         break;
1750                 }
1751         }
1752
1753         return(1);
1754 }
1755
1756 /**
1757  * lpfc_get_hba_model_desc - Retrieve HBA device model name and description
1758  * @phba: pointer to lpfc hba data structure.
1759  * @mdp: pointer to the data structure to hold the derived model name.
1760  * @descp: pointer to the data structure to hold the derived description.
1761  *
1762  * This routine retrieves HBA's description based on its registered PCI device
1763  * ID. The @descp passed into this function points to an array of 256 chars. It
1764  * shall be returned with the model name, maximum speed, and the host bus type.
1765  * The @mdp passed into this function points to an array of 80 chars. When the
1766  * function returns, the @mdp will be filled with the model name.
1767  **/
1768 static void
1769 lpfc_get_hba_model_desc(struct lpfc_hba *phba, uint8_t *mdp, uint8_t *descp)
1770 {
1771         lpfc_vpd_t *vp;
1772         uint16_t dev_id = phba->pcidev->device;
1773         int max_speed;
1774         int GE = 0;
1775         int oneConnect = 0; /* default is not a oneConnect */
1776         struct {
1777                 char *name;
1778                 char *bus;
1779                 char *function;
1780         } m = {"<Unknown>", "", ""};
1781
1782         if (mdp && mdp[0] != '\0'
1783                 && descp && descp[0] != '\0')
1784                 return;
1785
1786         if (phba->lmt & LMT_16Gb)
1787                 max_speed = 16;
1788         else if (phba->lmt & LMT_10Gb)
1789                 max_speed = 10;
1790         else if (phba->lmt & LMT_8Gb)
1791                 max_speed = 8;
1792         else if (phba->lmt & LMT_4Gb)
1793                 max_speed = 4;
1794         else if (phba->lmt & LMT_2Gb)
1795                 max_speed = 2;
1796         else
1797                 max_speed = 1;
1798
1799         vp = &phba->vpd;
1800
1801         switch (dev_id) {
1802         case PCI_DEVICE_ID_FIREFLY:
1803                 m = (typeof(m)){"LP6000", "PCI", "Fibre Channel Adapter"};
1804                 break;
1805         case PCI_DEVICE_ID_SUPERFLY:
1806                 if (vp->rev.biuRev >= 1 && vp->rev.biuRev <= 3)
1807                         m = (typeof(m)){"LP7000", "PCI",
1808                                         "Fibre Channel Adapter"};
1809                 else
1810                         m = (typeof(m)){"LP7000E", "PCI",
1811                                         "Fibre Channel Adapter"};
1812                 break;
1813         case PCI_DEVICE_ID_DRAGONFLY:
1814                 m = (typeof(m)){"LP8000", "PCI",
1815                                 "Fibre Channel Adapter"};
1816                 break;
1817         case PCI_DEVICE_ID_CENTAUR:
1818                 if (FC_JEDEC_ID(vp->rev.biuRev) == CENTAUR_2G_JEDEC_ID)
1819                         m = (typeof(m)){"LP9002", "PCI",
1820                                         "Fibre Channel Adapter"};
1821                 else
1822                         m = (typeof(m)){"LP9000", "PCI",
1823                                         "Fibre Channel Adapter"};
1824                 break;
1825         case PCI_DEVICE_ID_RFLY:
1826                 m = (typeof(m)){"LP952", "PCI",
1827                                 "Fibre Channel Adapter"};
1828                 break;
1829         case PCI_DEVICE_ID_PEGASUS:
1830                 m = (typeof(m)){"LP9802", "PCI-X",
1831                                 "Fibre Channel Adapter"};
1832                 break;
1833         case PCI_DEVICE_ID_THOR:
1834                 m = (typeof(m)){"LP10000", "PCI-X",
1835                                 "Fibre Channel Adapter"};
1836                 break;
1837         case PCI_DEVICE_ID_VIPER:
1838                 m = (typeof(m)){"LPX1000",  "PCI-X",
1839                                 "Fibre Channel Adapter"};
1840                 break;
1841         case PCI_DEVICE_ID_PFLY:
1842                 m = (typeof(m)){"LP982", "PCI-X",
1843                                 "Fibre Channel Adapter"};
1844                 break;
1845         case PCI_DEVICE_ID_TFLY:
1846                 m = (typeof(m)){"LP1050", "PCI-X",
1847                                 "Fibre Channel Adapter"};
1848                 break;
1849         case PCI_DEVICE_ID_HELIOS:
1850                 m = (typeof(m)){"LP11000", "PCI-X2",
1851                                 "Fibre Channel Adapter"};
1852                 break;
1853         case PCI_DEVICE_ID_HELIOS_SCSP:
1854                 m = (typeof(m)){"LP11000-SP", "PCI-X2",
1855                                 "Fibre Channel Adapter"};
1856                 break;
1857         case PCI_DEVICE_ID_HELIOS_DCSP:
1858                 m = (typeof(m)){"LP11002-SP",  "PCI-X2",
1859                                 "Fibre Channel Adapter"};
1860                 break;
1861         case PCI_DEVICE_ID_NEPTUNE:
1862                 m = (typeof(m)){"LPe1000", "PCIe", "Fibre Channel Adapter"};
1863                 break;
1864         case PCI_DEVICE_ID_NEPTUNE_SCSP:
1865                 m = (typeof(m)){"LPe1000-SP", "PCIe", "Fibre Channel Adapter"};
1866                 break;
1867         case PCI_DEVICE_ID_NEPTUNE_DCSP:
1868                 m = (typeof(m)){"LPe1002-SP", "PCIe", "Fibre Channel Adapter"};
1869                 break;
1870         case PCI_DEVICE_ID_BMID:
1871                 m = (typeof(m)){"LP1150", "PCI-X2", "Fibre Channel Adapter"};
1872                 break;
1873         case PCI_DEVICE_ID_BSMB:
1874                 m = (typeof(m)){"LP111", "PCI-X2", "Fibre Channel Adapter"};
1875                 break;
1876         case PCI_DEVICE_ID_ZEPHYR:
1877                 m = (typeof(m)){"LPe11000", "PCIe", "Fibre Channel Adapter"};
1878                 break;
1879         case PCI_DEVICE_ID_ZEPHYR_SCSP:
1880                 m = (typeof(m)){"LPe11000", "PCIe", "Fibre Channel Adapter"};
1881                 break;
1882         case PCI_DEVICE_ID_ZEPHYR_DCSP:
1883                 m = (typeof(m)){"LP2105", "PCIe", "FCoE Adapter"};
1884                 GE = 1;
1885                 break;
1886         case PCI_DEVICE_ID_ZMID:
1887                 m = (typeof(m)){"LPe1150", "PCIe", "Fibre Channel Adapter"};
1888                 break;
1889         case PCI_DEVICE_ID_ZSMB:
1890                 m = (typeof(m)){"LPe111", "PCIe", "Fibre Channel Adapter"};
1891                 break;
1892         case PCI_DEVICE_ID_LP101:
1893                 m = (typeof(m)){"LP101", "PCI-X", "Fibre Channel Adapter"};
1894                 break;
1895         case PCI_DEVICE_ID_LP10000S:
1896                 m = (typeof(m)){"LP10000-S", "PCI", "Fibre Channel Adapter"};
1897                 break;
1898         case PCI_DEVICE_ID_LP11000S:
1899                 m = (typeof(m)){"LP11000-S", "PCI-X2", "Fibre Channel Adapter"};
1900                 break;
1901         case PCI_DEVICE_ID_LPE11000S:
1902                 m = (typeof(m)){"LPe11000-S", "PCIe", "Fibre Channel Adapter"};
1903                 break;
1904         case PCI_DEVICE_ID_SAT:
1905                 m = (typeof(m)){"LPe12000", "PCIe", "Fibre Channel Adapter"};
1906                 break;
1907         case PCI_DEVICE_ID_SAT_MID:
1908                 m = (typeof(m)){"LPe1250", "PCIe", "Fibre Channel Adapter"};
1909                 break;
1910         case PCI_DEVICE_ID_SAT_SMB:
1911                 m = (typeof(m)){"LPe121", "PCIe", "Fibre Channel Adapter"};
1912                 break;
1913         case PCI_DEVICE_ID_SAT_DCSP:
1914                 m = (typeof(m)){"LPe12002-SP", "PCIe", "Fibre Channel Adapter"};
1915                 break;
1916         case PCI_DEVICE_ID_SAT_SCSP:
1917                 m = (typeof(m)){"LPe12000-SP", "PCIe", "Fibre Channel Adapter"};
1918                 break;
1919         case PCI_DEVICE_ID_SAT_S:
1920                 m = (typeof(m)){"LPe12000-S", "PCIe", "Fibre Channel Adapter"};
1921                 break;
1922         case PCI_DEVICE_ID_HORNET:
1923                 m = (typeof(m)){"LP21000", "PCIe", "FCoE Adapter"};
1924                 GE = 1;
1925                 break;
1926         case PCI_DEVICE_ID_PROTEUS_VF:
1927                 m = (typeof(m)){"LPev12000", "PCIe IOV",
1928                                 "Fibre Channel Adapter"};
1929                 break;
1930         case PCI_DEVICE_ID_PROTEUS_PF:
1931                 m = (typeof(m)){"LPev12000", "PCIe IOV",
1932                                 "Fibre Channel Adapter"};
1933                 break;
1934         case PCI_DEVICE_ID_PROTEUS_S:
1935                 m = (typeof(m)){"LPemv12002-S", "PCIe IOV",
1936                                 "Fibre Channel Adapter"};
1937                 break;
1938         case PCI_DEVICE_ID_TIGERSHARK:
1939                 oneConnect = 1;
1940                 m = (typeof(m)){"OCe10100", "PCIe", "FCoE"};
1941                 break;
1942         case PCI_DEVICE_ID_TOMCAT:
1943                 oneConnect = 1;
1944                 m = (typeof(m)){"OCe11100", "PCIe", "FCoE"};
1945                 break;
1946         case PCI_DEVICE_ID_FALCON:
1947                 m = (typeof(m)){"LPSe12002-ML1-E", "PCIe",
1948                                 "EmulexSecure Fibre"};
1949                 break;
1950         case PCI_DEVICE_ID_BALIUS:
1951                 m = (typeof(m)){"LPVe12002", "PCIe Shared I/O",
1952                                 "Fibre Channel Adapter"};
1953                 break;
1954         case PCI_DEVICE_ID_LANCER_FC:
1955         case PCI_DEVICE_ID_LANCER_FC_VF:
1956                 m = (typeof(m)){"LPe16000", "PCIe", "Fibre Channel Adapter"};
1957                 break;
1958         case PCI_DEVICE_ID_LANCER_FCOE:
1959         case PCI_DEVICE_ID_LANCER_FCOE_VF:
1960                 oneConnect = 1;
1961                 m = (typeof(m)){"OCe50100", "PCIe", "FCoE"};
1962                 break;
1963         default:
1964                 m = (typeof(m)){"Unknown", "", ""};
1965                 break;
1966         }
1967
1968         if (mdp && mdp[0] == '\0')
1969                 snprintf(mdp, 79,"%s", m.name);
1970         /*
1971          * oneConnect hba requires special processing, they are all initiators
1972          * and we put the port number on the end
1973          */
1974         if (descp && descp[0] == '\0') {
1975                 if (oneConnect)
1976                         snprintf(descp, 255,
1977                                 "Emulex OneConnect %s, %s Initiator, Port %s",
1978                                 m.name, m.function,
1979                                 phba->Port);
1980                 else
1981                         snprintf(descp, 255,
1982                                 "Emulex %s %d%s %s %s",
1983                                 m.name, max_speed, (GE) ? "GE" : "Gb",
1984                                 m.bus, m.function);
1985         }
1986 }
1987
1988 /**
1989  * lpfc_post_buffer - Post IOCB(s) with DMA buffer descriptor(s) to a IOCB ring
1990  * @phba: pointer to lpfc hba data structure.
1991  * @pring: pointer to a IOCB ring.
1992  * @cnt: the number of IOCBs to be posted to the IOCB ring.
1993  *
1994  * This routine posts a given number of IOCBs with the associated DMA buffer
1995  * descriptors specified by the cnt argument to the given IOCB ring.
1996  *
1997  * Return codes
1998  *   The number of IOCBs NOT able to be posted to the IOCB ring.
1999  **/
2000 int
2001 lpfc_post_buffer(struct lpfc_hba *phba, struct lpfc_sli_ring *pring, int cnt)
2002 {
2003         IOCB_t *icmd;
2004         struct lpfc_iocbq *iocb;
2005         struct lpfc_dmabuf *mp1, *mp2;
2006
2007         cnt += pring->missbufcnt;
2008
2009         /* While there are buffers to post */
2010         while (cnt > 0) {
2011                 /* Allocate buffer for  command iocb */
2012                 iocb = lpfc_sli_get_iocbq(phba);
2013                 if (iocb == NULL) {
2014                         pring->missbufcnt = cnt;
2015                         return cnt;
2016                 }
2017                 icmd = &iocb->iocb;
2018
2019                 /* 2 buffers can be posted per command */
2020                 /* Allocate buffer to post */
2021                 mp1 = kmalloc(sizeof (struct lpfc_dmabuf), GFP_KERNEL);
2022                 if (mp1)
2023                     mp1->virt = lpfc_mbuf_alloc(phba, MEM_PRI, &mp1->phys);
2024                 if (!mp1 || !mp1->virt) {
2025                         kfree(mp1);
2026                         lpfc_sli_release_iocbq(phba, iocb);
2027                         pring->missbufcnt = cnt;
2028                         return cnt;
2029                 }
2030
2031                 INIT_LIST_HEAD(&mp1->list);
2032                 /* Allocate buffer to post */
2033                 if (cnt > 1) {
2034                         mp2 = kmalloc(sizeof (struct lpfc_dmabuf), GFP_KERNEL);
2035                         if (mp2)
2036                                 mp2->virt = lpfc_mbuf_alloc(phba, MEM_PRI,
2037                                                             &mp2->phys);
2038                         if (!mp2 || !mp2->virt) {
2039                                 kfree(mp2);
2040                                 lpfc_mbuf_free(phba, mp1->virt, mp1->phys);
2041                                 kfree(mp1);
2042                                 lpfc_sli_release_iocbq(phba, iocb);
2043                                 pring->missbufcnt = cnt;
2044                                 return cnt;
2045                         }
2046
2047                         INIT_LIST_HEAD(&mp2->list);
2048                 } else {
2049                         mp2 = NULL;
2050                 }
2051
2052                 icmd->un.cont64[0].addrHigh = putPaddrHigh(mp1->phys);
2053                 icmd->un.cont64[0].addrLow = putPaddrLow(mp1->phys);
2054                 icmd->un.cont64[0].tus.f.bdeSize = FCELSSIZE;
2055                 icmd->ulpBdeCount = 1;
2056                 cnt--;
2057                 if (mp2) {
2058                         icmd->un.cont64[1].addrHigh = putPaddrHigh(mp2->phys);
2059                         icmd->un.cont64[1].addrLow = putPaddrLow(mp2->phys);
2060                         icmd->un.cont64[1].tus.f.bdeSize = FCELSSIZE;
2061                         cnt--;
2062                         icmd->ulpBdeCount = 2;
2063                 }
2064
2065                 icmd->ulpCommand = CMD_QUE_RING_BUF64_CN;
2066                 icmd->ulpLe = 1;
2067
2068                 if (lpfc_sli_issue_iocb(phba, pring->ringno, iocb, 0) ==
2069                     IOCB_ERROR) {
2070                         lpfc_mbuf_free(phba, mp1->virt, mp1->phys);
2071                         kfree(mp1);
2072                         cnt++;
2073                         if (mp2) {
2074                                 lpfc_mbuf_free(phba, mp2->virt, mp2->phys);
2075                                 kfree(mp2);
2076                                 cnt++;
2077                         }
2078                         lpfc_sli_release_iocbq(phba, iocb);
2079                         pring->missbufcnt = cnt;
2080                         return cnt;
2081                 }
2082                 lpfc_sli_ringpostbuf_put(phba, pring, mp1);
2083                 if (mp2)
2084                         lpfc_sli_ringpostbuf_put(phba, pring, mp2);
2085         }
2086         pring->missbufcnt = 0;
2087         return 0;
2088 }
2089
2090 /**
2091  * lpfc_post_rcv_buf - Post the initial receive IOCB buffers to ELS ring
2092  * @phba: pointer to lpfc hba data structure.
2093  *
2094  * This routine posts initial receive IOCB buffers to the ELS ring. The
2095  * current number of initial IOCB buffers specified by LPFC_BUF_RING0 is
2096  * set to 64 IOCBs.
2097  *
2098  * Return codes
2099  *   0 - success (currently always success)
2100  **/
2101 static int
2102 lpfc_post_rcv_buf(struct lpfc_hba *phba)
2103 {
2104         struct lpfc_sli *psli = &phba->sli;
2105
2106         /* Ring 0, ELS / CT buffers */
2107         lpfc_post_buffer(phba, &psli->ring[LPFC_ELS_RING], LPFC_BUF_RING0);
2108         /* Ring 2 - FCP no buffers needed */
2109
2110         return 0;
2111 }
2112
2113 #define S(N,V) (((V)<<(N))|((V)>>(32-(N))))
2114
2115 /**
2116  * lpfc_sha_init - Set up initial array of hash table entries
2117  * @HashResultPointer: pointer to an array as hash table.
2118  *
2119  * This routine sets up the initial values to the array of hash table entries
2120  * for the LC HBAs.
2121  **/
2122 static void
2123 lpfc_sha_init(uint32_t * HashResultPointer)
2124 {
2125         HashResultPointer[0] = 0x67452301;
2126         HashResultPointer[1] = 0xEFCDAB89;
2127         HashResultPointer[2] = 0x98BADCFE;
2128         HashResultPointer[3] = 0x10325476;
2129         HashResultPointer[4] = 0xC3D2E1F0;
2130 }
2131
2132 /**
2133  * lpfc_sha_iterate - Iterate initial hash table with the working hash table
2134  * @HashResultPointer: pointer to an initial/result hash table.
2135  * @HashWorkingPointer: pointer to an working hash table.
2136  *
2137  * This routine iterates an initial hash table pointed by @HashResultPointer
2138  * with the values from the working hash table pointeed by @HashWorkingPointer.
2139  * The results are putting back to the initial hash table, returned through
2140  * the @HashResultPointer as the result hash table.
2141  **/
2142 static void
2143 lpfc_sha_iterate(uint32_t * HashResultPointer, uint32_t * HashWorkingPointer)
2144 {
2145         int t;
2146         uint32_t TEMP;
2147         uint32_t A, B, C, D, E;
2148         t = 16;
2149         do {
2150                 HashWorkingPointer[t] =
2151                     S(1,
2152                       HashWorkingPointer[t - 3] ^ HashWorkingPointer[t -
2153                                                                      8] ^
2154                       HashWorkingPointer[t - 14] ^ HashWorkingPointer[t - 16]);
2155         } while (++t <= 79);
2156         t = 0;
2157         A = HashResultPointer[0];
2158         B = HashResultPointer[1];
2159         C = HashResultPointer[2];
2160         D = HashResultPointer[3];
2161         E = HashResultPointer[4];
2162
2163         do {
2164                 if (t < 20) {
2165                         TEMP = ((B & C) | ((~B) & D)) + 0x5A827999;
2166                 } else if (t < 40) {
2167                         TEMP = (B ^ C ^ D) + 0x6ED9EBA1;
2168                 } else if (t < 60) {
2169                         TEMP = ((B & C) | (B & D) | (C & D)) + 0x8F1BBCDC;
2170                 } else {
2171                         TEMP = (B ^ C ^ D) + 0xCA62C1D6;
2172                 }
2173                 TEMP += S(5, A) + E + HashWorkingPointer[t];
2174                 E = D;
2175                 D = C;
2176                 C = S(30, B);
2177                 B = A;
2178                 A = TEMP;
2179         } while (++t <= 79);
2180
2181         HashResultPointer[0] += A;
2182         HashResultPointer[1] += B;
2183         HashResultPointer[2] += C;
2184         HashResultPointer[3] += D;
2185         HashResultPointer[4] += E;
2186
2187 }
2188
2189 /**
2190  * lpfc_challenge_key - Create challenge key based on WWPN of the HBA
2191  * @RandomChallenge: pointer to the entry of host challenge random number array.
2192  * @HashWorking: pointer to the entry of the working hash array.
2193  *
2194  * This routine calculates the working hash array referred by @HashWorking
2195  * from the challenge random numbers associated with the host, referred by
2196  * @RandomChallenge. The result is put into the entry of the working hash
2197  * array and returned by reference through @HashWorking.
2198  **/
2199 static void
2200 lpfc_challenge_key(uint32_t * RandomChallenge, uint32_t * HashWorking)
2201 {
2202         *HashWorking = (*RandomChallenge ^ *HashWorking);
2203 }
2204
2205 /**
2206  * lpfc_hba_init - Perform special handling for LC HBA initialization
2207  * @phba: pointer to lpfc hba data structure.
2208  * @hbainit: pointer to an array of unsigned 32-bit integers.
2209  *
2210  * This routine performs the special handling for LC HBA initialization.
2211  **/
2212 void
2213 lpfc_hba_init(struct lpfc_hba *phba, uint32_t *hbainit)
2214 {
2215         int t;
2216         uint32_t *HashWorking;
2217         uint32_t *pwwnn = (uint32_t *) phba->wwnn;
2218
2219         HashWorking = kcalloc(80, sizeof(uint32_t), GFP_KERNEL);
2220         if (!HashWorking)
2221                 return;
2222
2223         HashWorking[0] = HashWorking[78] = *pwwnn++;
2224         HashWorking[1] = HashWorking[79] = *pwwnn;
2225
2226         for (t = 0; t < 7; t++)
2227                 lpfc_challenge_key(phba->RandomData + t, HashWorking + t);
2228
2229         lpfc_sha_init(hbainit);
2230         lpfc_sha_iterate(hbainit, HashWorking);
2231         kfree(HashWorking);
2232 }
2233
2234 /**
2235  * lpfc_cleanup - Performs vport cleanups before deleting a vport
2236  * @vport: pointer to a virtual N_Port data structure.
2237  *
2238  * This routine performs the necessary cleanups before deleting the @vport.
2239  * It invokes the discovery state machine to perform necessary state
2240  * transitions and to release the ndlps associated with the @vport. Note,
2241  * the physical port is treated as @vport 0.
2242  **/
2243 void
2244 lpfc_cleanup(struct lpfc_vport *vport)
2245 {
2246         struct lpfc_hba   *phba = vport->phba;
2247         struct lpfc_nodelist *ndlp, *next_ndlp;
2248         int i = 0;
2249
2250         if (phba->link_state > LPFC_LINK_DOWN)
2251                 lpfc_port_link_failure(vport);
2252
2253         list_for_each_entry_safe(ndlp, next_ndlp, &vport->fc_nodes, nlp_listp) {
2254                 if (!NLP_CHK_NODE_ACT(ndlp)) {
2255                         ndlp = lpfc_enable_node(vport, ndlp,
2256                                                 NLP_STE_UNUSED_NODE);
2257                         if (!ndlp)
2258                                 continue;
2259                         spin_lock_irq(&phba->ndlp_lock);
2260                         NLP_SET_FREE_REQ(ndlp);
2261                         spin_unlock_irq(&phba->ndlp_lock);
2262                         /* Trigger the release of the ndlp memory */
2263                         lpfc_nlp_put(ndlp);
2264                         continue;
2265                 }
2266                 spin_lock_irq(&phba->ndlp_lock);
2267                 if (NLP_CHK_FREE_REQ(ndlp)) {
2268                         /* The ndlp should not be in memory free mode already */
2269                         spin_unlock_irq(&phba->ndlp_lock);
2270                         continue;
2271                 } else
2272                         /* Indicate request for freeing ndlp memory */
2273                         NLP_SET_FREE_REQ(ndlp);
2274                 spin_unlock_irq(&phba->ndlp_lock);
2275
2276                 if (vport->port_type != LPFC_PHYSICAL_PORT &&
2277                     ndlp->nlp_DID == Fabric_DID) {
2278                         /* Just free up ndlp with Fabric_DID for vports */
2279                         lpfc_nlp_put(ndlp);
2280                         continue;
2281                 }
2282
2283                 if (ndlp->nlp_type & NLP_FABRIC)
2284                         lpfc_disc_state_machine(vport, ndlp, NULL,
2285                                         NLP_EVT_DEVICE_RECOVERY);
2286
2287                 lpfc_disc_state_machine(vport, ndlp, NULL,
2288                                              NLP_EVT_DEVICE_RM);
2289
2290         }
2291
2292         /* At this point, ALL ndlp's should be gone
2293          * because of the previous NLP_EVT_DEVICE_RM.
2294          * Lets wait for this to happen, if needed.
2295          */
2296         while (!list_empty(&vport->fc_nodes)) {
2297                 if (i++ > 3000) {
2298                         lpfc_printf_vlog(vport, KERN_ERR, LOG_DISCOVERY,
2299                                 "0233 Nodelist not empty\n");
2300                         list_for_each_entry_safe(ndlp, next_ndlp,
2301                                                 &vport->fc_nodes, nlp_listp) {
2302                                 lpfc_printf_vlog(ndlp->vport, KERN_ERR,
2303                                                 LOG_NODE,
2304                                                 "0282 did:x%x ndlp:x%p "
2305                                                 "usgmap:x%x refcnt:%d\n",
2306                                                 ndlp->nlp_DID, (void *)ndlp,
2307                                                 ndlp->nlp_usg_map,
2308                                                 atomic_read(
2309                                                         &ndlp->kref.refcount));
2310                         }
2311                         break;
2312                 }
2313
2314                 /* Wait for any activity on ndlps to settle */
2315                 msleep(10);
2316         }
2317         lpfc_cleanup_vports_rrqs(vport, NULL);
2318 }
2319
2320 /**
2321  * lpfc_stop_vport_timers - Stop all the timers associated with a vport
2322  * @vport: pointer to a virtual N_Port data structure.
2323  *
2324  * This routine stops all the timers associated with a @vport. This function
2325  * is invoked before disabling or deleting a @vport. Note that the physical
2326  * port is treated as @vport 0.
2327  **/
2328 void
2329 lpfc_stop_vport_timers(struct lpfc_vport *vport)
2330 {
2331         del_timer_sync(&vport->els_tmofunc);
2332         del_timer_sync(&vport->fc_fdmitmo);
2333         del_timer_sync(&vport->delayed_disc_tmo);
2334         lpfc_can_disctmo(vport);
2335         return;
2336 }
2337
2338 /**
2339  * __lpfc_sli4_stop_fcf_redisc_wait_timer - Stop FCF rediscovery wait timer
2340  * @phba: pointer to lpfc hba data structure.
2341  *
2342  * This routine stops the SLI4 FCF rediscover wait timer if it's on. The
2343  * caller of this routine should already hold the host lock.
2344  **/
2345 void
2346 __lpfc_sli4_stop_fcf_redisc_wait_timer(struct lpfc_hba *phba)
2347 {
2348         /* Clear pending FCF rediscovery wait flag */
2349         phba->fcf.fcf_flag &= ~FCF_REDISC_PEND;
2350
2351         /* Now, try to stop the timer */
2352         del_timer(&phba->fcf.redisc_wait);
2353 }
2354
2355 /**
2356  * lpfc_sli4_stop_fcf_redisc_wait_timer - Stop FCF rediscovery wait timer
2357  * @phba: pointer to lpfc hba data structure.
2358  *
2359  * This routine stops the SLI4 FCF rediscover wait timer if it's on. It
2360  * checks whether the FCF rediscovery wait timer is pending with the host
2361  * lock held before proceeding with disabling the timer and clearing the
2362  * wait timer pendig flag.
2363  **/
2364 void
2365 lpfc_sli4_stop_fcf_redisc_wait_timer(struct lpfc_hba *phba)
2366 {
2367         spin_lock_irq(&phba->hbalock);
2368         if (!(phba->fcf.fcf_flag & FCF_REDISC_PEND)) {
2369                 /* FCF rediscovery timer already fired or stopped */
2370                 spin_unlock_irq(&phba->hbalock);
2371                 return;
2372         }
2373         __lpfc_sli4_stop_fcf_redisc_wait_timer(phba);
2374         /* Clear failover in progress flags */
2375         phba->fcf.fcf_flag &= ~(FCF_DEAD_DISC | FCF_ACVL_DISC);
2376         spin_unlock_irq(&phba->hbalock);
2377 }
2378
2379 /**
2380  * lpfc_stop_hba_timers - Stop all the timers associated with an HBA
2381  * @phba: pointer to lpfc hba data structure.
2382  *
2383  * This routine stops all the timers associated with a HBA. This function is
2384  * invoked before either putting a HBA offline or unloading the driver.
2385  **/
2386 void
2387 lpfc_stop_hba_timers(struct lpfc_hba *phba)
2388 {
2389         lpfc_stop_vport_timers(phba->pport);
2390         del_timer_sync(&phba->sli.mbox_tmo);
2391         del_timer_sync(&phba->fabric_block_timer);
2392         del_timer_sync(&phba->eratt_poll);
2393         del_timer_sync(&phba->hb_tmofunc);
2394         if (phba->sli_rev == LPFC_SLI_REV4) {
2395                 del_timer_sync(&phba->rrq_tmr);
2396                 phba->hba_flag &= ~HBA_RRQ_ACTIVE;
2397         }
2398         phba->hb_outstanding = 0;
2399
2400         switch (phba->pci_dev_grp) {
2401         case LPFC_PCI_DEV_LP:
2402                 /* Stop any LightPulse device specific driver timers */
2403                 del_timer_sync(&phba->fcp_poll_timer);
2404                 break;
2405         case LPFC_PCI_DEV_OC:
2406                 /* Stop any OneConnect device sepcific driver timers */
2407                 lpfc_sli4_stop_fcf_redisc_wait_timer(phba);
2408                 break;
2409         default:
2410                 lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
2411                                 "0297 Invalid device group (x%x)\n",
2412                                 phba->pci_dev_grp);
2413                 break;
2414         }
2415         return;
2416 }
2417
2418 /**
2419  * lpfc_block_mgmt_io - Mark a HBA's management interface as blocked
2420  * @phba: pointer to lpfc hba data structure.
2421  *
2422  * This routine marks a HBA's management interface as blocked. Once the HBA's
2423  * management interface is marked as blocked, all the user space access to
2424  * the HBA, whether they are from sysfs interface or libdfc interface will
2425  * all be blocked. The HBA is set to block the management interface when the
2426  * driver prepares the HBA interface for online or offline.
2427  **/
2428 static void
2429 lpfc_block_mgmt_io(struct lpfc_hba * phba)
2430 {
2431         unsigned long iflag;
2432         uint8_t actcmd = MBX_HEARTBEAT;
2433         unsigned long timeout;
2434
2435
2436         spin_lock_irqsave(&phba->hbalock, iflag);
2437         phba->sli.sli_flag |= LPFC_BLOCK_MGMT_IO;
2438         if (phba->sli.mbox_active)
2439                 actcmd = phba->sli.mbox_active->u.mb.mbxCommand;
2440         spin_unlock_irqrestore(&phba->hbalock, iflag);
2441         /* Determine how long we might wait for the active mailbox
2442          * command to be gracefully completed by firmware.
2443          */
2444         timeout = msecs_to_jiffies(lpfc_mbox_tmo_val(phba, actcmd) * 1000) +
2445                         jiffies;
2446         /* Wait for the outstnading mailbox command to complete */
2447         while (phba->sli.mbox_active) {
2448                 /* Check active mailbox complete status every 2ms */
2449                 msleep(2);
2450                 if (time_after(jiffies, timeout)) {
2451                         lpfc_printf_log(phba, KERN_ERR, LOG_SLI,
2452                                 "2813 Mgmt IO is Blocked %x "
2453                                 "- mbox cmd %x still active\n",
2454                                 phba->sli.sli_flag, actcmd);
2455                         break;
2456                 }
2457         }
2458 }
2459
2460 /**
2461  * lpfc_online - Initialize and bring a HBA online
2462  * @phba: pointer to lpfc hba data structure.
2463  *
2464  * This routine initializes the HBA and brings a HBA online. During this
2465  * process, the management interface is blocked to prevent user space access
2466  * to the HBA interfering with the driver initialization.
2467  *
2468  * Return codes
2469  *   0 - successful
2470  *   1 - failed
2471  **/
2472 int
2473 lpfc_online(struct lpfc_hba *phba)
2474 {
2475         struct lpfc_vport *vport;
2476         struct lpfc_vport **vports;
2477         int i;
2478
2479         if (!phba)
2480                 return 0;
2481         vport = phba->pport;
2482
2483         if (!(vport->fc_flag & FC_OFFLINE_MODE))
2484                 return 0;
2485
2486         lpfc_printf_log(phba, KERN_WARNING, LOG_INIT,
2487                         "0458 Bring Adapter online\n");
2488
2489         lpfc_block_mgmt_io(phba);
2490
2491         if (!lpfc_sli_queue_setup(phba)) {
2492                 lpfc_unblock_mgmt_io(phba);
2493                 return 1;
2494         }
2495
2496         if (phba->sli_rev == LPFC_SLI_REV4) {
2497                 if (lpfc_sli4_hba_setup(phba)) { /* Initialize SLI4 HBA */
2498                         lpfc_unblock_mgmt_io(phba);
2499                         return 1;
2500                 }
2501         } else {
2502                 if (lpfc_sli_hba_setup(phba)) { /* Initialize SLI2/SLI3 HBA */
2503                         lpfc_unblock_mgmt_io(phba);
2504                         return 1;
2505                 }
2506         }
2507
2508         vports = lpfc_create_vport_work_array(phba);
2509         if (vports != NULL)
2510                 for (i = 0; i <= phba->max_vports && vports[i] != NULL; i++) {
2511                         struct Scsi_Host *shost;
2512                         shost = lpfc_shost_from_vport(vports[i]);
2513                         spin_lock_irq(shost->host_lock);
2514                         vports[i]->fc_flag &= ~FC_OFFLINE_MODE;
2515                         if (phba->sli3_options & LPFC_SLI3_NPIV_ENABLED)
2516                                 vports[i]->fc_flag |= FC_VPORT_NEEDS_REG_VPI;
2517                         if (phba->sli_rev == LPFC_SLI_REV4)
2518                                 vports[i]->fc_flag |= FC_VPORT_NEEDS_INIT_VPI;
2519                         spin_unlock_irq(shost->host_lock);
2520                 }
2521                 lpfc_destroy_vport_work_array(phba, vports);
2522
2523         lpfc_unblock_mgmt_io(phba);
2524         return 0;
2525 }
2526
2527 /**
2528  * lpfc_unblock_mgmt_io - Mark a HBA's management interface to be not blocked
2529  * @phba: pointer to lpfc hba data structure.
2530  *
2531  * This routine marks a HBA's management interface as not blocked. Once the
2532  * HBA's management interface is marked as not blocked, all the user space
2533  * access to the HBA, whether they are from sysfs interface or libdfc
2534  * interface will be allowed. The HBA is set to block the management interface
2535  * when the driver prepares the HBA interface for online or offline and then
2536  * set to unblock the management interface afterwards.
2537  **/
2538 void
2539 lpfc_unblock_mgmt_io(struct lpfc_hba * phba)
2540 {
2541         unsigned long iflag;
2542
2543         spin_lock_irqsave(&phba->hbalock, iflag);
2544         phba->sli.sli_flag &= ~LPFC_BLOCK_MGMT_IO;
2545         spin_unlock_irqrestore(&phba->hbalock, iflag);
2546 }
2547
2548 /**
2549  * lpfc_offline_prep - Prepare a HBA to be brought offline
2550  * @phba: pointer to lpfc hba data structure.
2551  *
2552  * This routine is invoked to prepare a HBA to be brought offline. It performs
2553  * unregistration login to all the nodes on all vports and flushes the mailbox
2554  * queue to make it ready to be brought offline.
2555  **/
2556 void
2557 lpfc_offline_prep(struct lpfc_hba * phba)
2558 {
2559         struct lpfc_vport *vport = phba->pport;
2560         struct lpfc_nodelist  *ndlp, *next_ndlp;
2561         struct lpfc_vport **vports;
2562         struct Scsi_Host *shost;
2563         int i;
2564
2565         if (vport->fc_flag & FC_OFFLINE_MODE)
2566                 return;
2567
2568         lpfc_block_mgmt_io(phba);
2569
2570         lpfc_linkdown(phba);
2571
2572         /* Issue an unreg_login to all nodes on all vports */
2573         vports = lpfc_create_vport_work_array(phba);
2574         if (vports != NULL) {
2575                 for (i = 0; i <= phba->max_vports && vports[i] != NULL; i++) {
2576                         if (vports[i]->load_flag & FC_UNLOADING)
2577                                 continue;
2578                         shost = lpfc_shost_from_vport(vports[i]);
2579                         spin_lock_irq(shost->host_lock);
2580                         vports[i]->vpi_state &= ~LPFC_VPI_REGISTERED;
2581                         vports[i]->fc_flag |= FC_VPORT_NEEDS_REG_VPI;
2582                         vports[i]->fc_flag &= ~FC_VFI_REGISTERED;
2583                         spin_unlock_irq(shost->host_lock);
2584
2585                         shost = lpfc_shost_from_vport(vports[i]);
2586                         list_for_each_entry_safe(ndlp, next_ndlp,
2587                                                  &vports[i]->fc_nodes,
2588                                                  nlp_listp) {
2589                                 if (!NLP_CHK_NODE_ACT(ndlp))
2590                                         continue;
2591                                 if (ndlp->nlp_state == NLP_STE_UNUSED_NODE)
2592                                         continue;
2593                                 if (ndlp->nlp_type & NLP_FABRIC) {
2594                                         lpfc_disc_state_machine(vports[i], ndlp,
2595                                                 NULL, NLP_EVT_DEVICE_RECOVERY);
2596                                         lpfc_disc_state_machine(vports[i], ndlp,
2597                                                 NULL, NLP_EVT_DEVICE_RM);
2598                                 }
2599                                 spin_lock_irq(shost->host_lock);
2600                                 ndlp->nlp_flag &= ~NLP_NPR_ADISC;
2601                                 spin_unlock_irq(shost->host_lock);
2602                                 lpfc_unreg_rpi(vports[i], ndlp);
2603                         }
2604                 }
2605         }
2606         lpfc_destroy_vport_work_array(phba, vports);
2607
2608         lpfc_sli_mbox_sys_shutdown(phba);
2609 }
2610
2611 /**
2612  * lpfc_offline - Bring a HBA offline
2613  * @phba: pointer to lpfc hba data structure.
2614  *
2615  * This routine actually brings a HBA offline. It stops all the timers
2616  * associated with the HBA, brings down the SLI layer, and eventually
2617  * marks the HBA as in offline state for the upper layer protocol.
2618  **/
2619 void
2620 lpfc_offline(struct lpfc_hba *phba)
2621 {
2622         struct Scsi_Host  *shost;
2623         struct lpfc_vport **vports;
2624         int i;
2625
2626         if (phba->pport->fc_flag & FC_OFFLINE_MODE)
2627                 return;
2628
2629         /* stop port and all timers associated with this hba */
2630         lpfc_stop_port(phba);
2631         vports = lpfc_create_vport_work_array(phba);
2632         if (vports != NULL)
2633                 for (i = 0; i <= phba->max_vports && vports[i] != NULL; i++)
2634                         lpfc_stop_vport_timers(vports[i]);
2635         lpfc_destroy_vport_work_array(phba, vports);
2636         lpfc_printf_log(phba, KERN_WARNING, LOG_INIT,
2637                         "0460 Bring Adapter offline\n");
2638         /* Bring down the SLI Layer and cleanup.  The HBA is offline
2639            now.  */
2640         lpfc_sli_hba_down(phba);
2641         spin_lock_irq(&phba->hbalock);
2642         phba->work_ha = 0;
2643         spin_unlock_irq(&phba->hbalock);
2644         vports = lpfc_create_vport_work_array(phba);
2645         if (vports != NULL)
2646                 for (i = 0; i <= phba->max_vports && vports[i] != NULL; i++) {
2647                         shost = lpfc_shost_from_vport(vports[i]);
2648                         spin_lock_irq(shost->host_lock);
2649                         vports[i]->work_port_events = 0;
2650                         vports[i]->fc_flag |= FC_OFFLINE_MODE;
2651                         spin_unlock_irq(shost->host_lock);
2652                 }
2653         lpfc_destroy_vport_work_array(phba, vports);
2654 }
2655
2656 /**
2657  * lpfc_scsi_free - Free all the SCSI buffers and IOCBs from driver lists
2658  * @phba: pointer to lpfc hba data structure.
2659  *
2660  * This routine is to free all the SCSI buffers and IOCBs from the driver
2661  * list back to kernel. It is called from lpfc_pci_remove_one to free
2662  * the internal resources before the device is removed from the system.
2663  *
2664  * Return codes
2665  *   0 - successful (for now, it always returns 0)
2666  **/
2667 static int
2668 lpfc_scsi_free(struct lpfc_hba *phba)
2669 {
2670         struct lpfc_scsi_buf *sb, *sb_next;
2671         struct lpfc_iocbq *io, *io_next;
2672
2673         spin_lock_irq(&phba->hbalock);
2674         /* Release all the lpfc_scsi_bufs maintained by this host. */
2675         spin_lock(&phba->scsi_buf_list_lock);
2676         list_for_each_entry_safe(sb, sb_next, &phba->lpfc_scsi_buf_list, list) {
2677                 list_del(&sb->list);
2678                 pci_pool_free(phba->lpfc_scsi_dma_buf_pool, sb->data,
2679                               sb->dma_handle);
2680                 kfree(sb);
2681                 phba->total_scsi_bufs--;
2682         }
2683         spin_unlock(&phba->scsi_buf_list_lock);
2684
2685         /* Release all the lpfc_iocbq entries maintained by this host. */
2686         list_for_each_entry_safe(io, io_next, &phba->lpfc_iocb_list, list) {
2687                 list_del(&io->list);
2688                 kfree(io);
2689                 phba->total_iocbq_bufs--;
2690         }
2691
2692         spin_unlock_irq(&phba->hbalock);
2693         return 0;
2694 }
2695
2696 /**
2697  * lpfc_create_port - Create an FC port
2698  * @phba: pointer to lpfc hba data structure.
2699  * @instance: a unique integer ID to this FC port.
2700  * @dev: pointer to the device data structure.
2701  *
2702  * This routine creates a FC port for the upper layer protocol. The FC port
2703  * can be created on top of either a physical port or a virtual port provided
2704  * by the HBA. This routine also allocates a SCSI host data structure (shost)
2705  * and associates the FC port created before adding the shost into the SCSI
2706  * layer.
2707  *
2708  * Return codes
2709  *   @vport - pointer to the virtual N_Port data structure.
2710  *   NULL - port create failed.
2711  **/
2712 struct lpfc_vport *
2713 lpfc_create_port(struct lpfc_hba *phba, int instance, struct device *dev)
2714 {
2715         struct lpfc_vport *vport;
2716         struct Scsi_Host  *shost;
2717         int error = 0;
2718
2719         if (dev != &phba->pcidev->dev)
2720                 shost = scsi_host_alloc(&lpfc_vport_template,
2721                                         sizeof(struct lpfc_vport));
2722         else
2723                 shost = scsi_host_alloc(&lpfc_template,
2724                                         sizeof(struct lpfc_vport));
2725         if (!shost)
2726                 goto out;
2727
2728         vport = (struct lpfc_vport *) shost->hostdata;
2729         vport->phba = phba;
2730         vport->load_flag |= FC_LOADING;
2731         vport->fc_flag |= FC_VPORT_NEEDS_REG_VPI;
2732         vport->fc_rscn_flush = 0;
2733
2734         lpfc_get_vport_cfgparam(vport);
2735         shost->unique_id = instance;
2736         shost->max_id = LPFC_MAX_TARGET;
2737         shost->max_lun = vport->cfg_max_luns;
2738         shost->this_id = -1;
2739         shost->max_cmd_len = 16;
2740         if (phba->sli_rev == LPFC_SLI_REV4) {
2741                 shost->dma_boundary =
2742                         phba->sli4_hba.pc_sli4_params.sge_supp_len-1;
2743                 shost->sg_tablesize = phba->cfg_sg_seg_cnt;
2744         }
2745
2746         /*
2747          * Set initial can_queue value since 0 is no longer supported and
2748          * scsi_add_host will fail. This will be adjusted later based on the
2749          * max xri value determined in hba setup.
2750          */
2751         shost->can_queue = phba->cfg_hba_queue_depth - 10;
2752         if (dev != &phba->pcidev->dev) {
2753                 shost->transportt = lpfc_vport_transport_template;
2754                 vport->port_type = LPFC_NPIV_PORT;
2755         } else {
2756                 shost->transportt = lpfc_transport_template;
2757                 vport->port_type = LPFC_PHYSICAL_PORT;
2758         }
2759
2760         /* Initialize all internally managed lists. */
2761         INIT_LIST_HEAD(&vport->fc_nodes);
2762         INIT_LIST_HEAD(&vport->rcv_buffer_list);
2763         spin_lock_init(&vport->work_port_lock);
2764
2765         init_timer(&vport->fc_disctmo);
2766         vport->fc_disctmo.function = lpfc_disc_timeout;
2767         vport->fc_disctmo.data = (unsigned long)vport;
2768
2769         init_timer(&vport->fc_fdmitmo);
2770         vport->fc_fdmitmo.function = lpfc_fdmi_tmo;
2771         vport->fc_fdmitmo.data = (unsigned long)vport;
2772
2773         init_timer(&vport->els_tmofunc);
2774         vport->els_tmofunc.function = lpfc_els_timeout;
2775         vport->els_tmofunc.data = (unsigned long)vport;
2776
2777         init_timer(&vport->delayed_disc_tmo);
2778         vport->delayed_disc_tmo.function = lpfc_delayed_disc_tmo;
2779         vport->delayed_disc_tmo.data = (unsigned long)vport;
2780
2781         error = scsi_add_host_with_dma(shost, dev, &phba->pcidev->dev);
2782         if (error)
2783                 goto out_put_shost;
2784
2785         spin_lock_irq(&phba->hbalock);
2786         list_add_tail(&vport->listentry, &phba->port_list);
2787         spin_unlock_irq(&phba->hbalock);
2788         return vport;
2789
2790 out_put_shost:
2791         scsi_host_put(shost);
2792 out:
2793         return NULL;
2794 }
2795
2796 /**
2797  * destroy_port -  destroy an FC port
2798  * @vport: pointer to an lpfc virtual N_Port data structure.
2799  *
2800  * This routine destroys a FC port from the upper layer protocol. All the
2801  * resources associated with the port are released.
2802  **/
2803 void
2804 destroy_port(struct lpfc_vport *vport)
2805 {
2806         struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
2807         struct lpfc_hba  *phba = vport->phba;
2808
2809         lpfc_debugfs_terminate(vport);
2810         fc_remove_host(shost);
2811         scsi_remove_host(shost);
2812
2813         spin_lock_irq(&phba->hbalock);
2814         list_del_init(&vport->listentry);
2815         spin_unlock_irq(&phba->hbalock);
2816
2817         lpfc_cleanup(vport);
2818         return;
2819 }
2820
2821 /**
2822  * lpfc_get_instance - Get a unique integer ID
2823  *
2824  * This routine allocates a unique integer ID from lpfc_hba_index pool. It
2825  * uses the kernel idr facility to perform the task.
2826  *
2827  * Return codes:
2828  *   instance - a unique integer ID allocated as the new instance.
2829  *   -1 - lpfc get instance failed.
2830  **/
2831 int
2832 lpfc_get_instance(void)
2833 {
2834         int instance = 0;
2835
2836         /* Assign an unused number */
2837         if (!idr_pre_get(&lpfc_hba_index, GFP_KERNEL))
2838                 return -1;
2839         if (idr_get_new(&lpfc_hba_index, NULL, &instance))
2840                 return -1;
2841         return instance;
2842 }
2843
2844 /**
2845  * lpfc_scan_finished - method for SCSI layer to detect whether scan is done
2846  * @shost: pointer to SCSI host data structure.
2847  * @time: elapsed time of the scan in jiffies.
2848  *
2849  * This routine is called by the SCSI layer with a SCSI host to determine
2850  * whether the scan host is finished.
2851  *
2852  * Note: there is no scan_start function as adapter initialization will have
2853  * asynchronously kicked off the link initialization.
2854  *
2855  * Return codes
2856  *   0 - SCSI host scan is not over yet.
2857  *   1 - SCSI host scan is over.
2858  **/
2859 int lpfc_scan_finished(struct Scsi_Host *shost, unsigned long time)
2860 {
2861         struct lpfc_vport *vport = (struct lpfc_vport *) shost->hostdata;
2862         struct lpfc_hba   *phba = vport->phba;
2863         int stat = 0;
2864
2865         spin_lock_irq(shost->host_lock);
2866
2867         if (vport->load_flag & FC_UNLOADING) {
2868                 stat = 1;
2869                 goto finished;
2870         }
2871         if (time >= 30 * HZ) {
2872                 lpfc_printf_log(phba, KERN_INFO, LOG_INIT,
2873                                 "0461 Scanning longer than 30 "
2874                                 "seconds.  Continuing initialization\n");
2875                 stat = 1;
2876                 goto finished;
2877         }
2878         if (time >= 15 * HZ && phba->link_state <= LPFC_LINK_DOWN) {
2879                 lpfc_printf_log(phba, KERN_INFO, LOG_INIT,
2880                                 "0465 Link down longer than 15 "
2881                                 "seconds.  Continuing initialization\n");
2882                 stat = 1;
2883                 goto finished;
2884         }
2885
2886         if (vport->port_state != LPFC_VPORT_READY)
2887                 goto finished;
2888         if (vport->num_disc_nodes || vport->fc_prli_sent)
2889                 goto finished;
2890         if (vport->fc_map_cnt == 0 && time < 2 * HZ)
2891                 goto finished;
2892         if ((phba->sli.sli_flag & LPFC_SLI_MBOX_ACTIVE) != 0)
2893                 goto finished;
2894
2895         stat = 1;
2896
2897 finished:
2898         spin_unlock_irq(shost->host_lock);
2899         return stat;
2900 }
2901
2902 /**
2903  * lpfc_host_attrib_init - Initialize SCSI host attributes on a FC port
2904  * @shost: pointer to SCSI host data structure.
2905  *
2906  * This routine initializes a given SCSI host attributes on a FC port. The
2907  * SCSI host can be either on top of a physical port or a virtual port.
2908  **/
2909 void lpfc_host_attrib_init(struct Scsi_Host *shost)
2910 {
2911         struct lpfc_vport *vport = (struct lpfc_vport *) shost->hostdata;
2912         struct lpfc_hba   *phba = vport->phba;
2913         /*
2914          * Set fixed host attributes.  Must done after lpfc_sli_hba_setup().
2915          */
2916
2917         fc_host_node_name(shost) = wwn_to_u64(vport->fc_nodename.u.wwn);
2918         fc_host_port_name(shost) = wwn_to_u64(vport->fc_portname.u.wwn);
2919         fc_host_supported_classes(shost) = FC_COS_CLASS3;
2920
2921         memset(fc_host_supported_fc4s(shost), 0,
2922                sizeof(fc_host_supported_fc4s(shost)));
2923         fc_host_supported_fc4s(shost)[2] = 1;
2924         fc_host_supported_fc4s(shost)[7] = 1;
2925
2926         lpfc_vport_symbolic_node_name(vport, fc_host_symbolic_name(shost),
2927                                  sizeof fc_host_symbolic_name(shost));
2928
2929         fc_host_supported_speeds(shost) = 0;
2930         if (phba->lmt & LMT_16Gb)
2931                 fc_host_supported_speeds(shost) |= FC_PORTSPEED_16GBIT;
2932         if (phba->lmt & LMT_10Gb)
2933                 fc_host_supported_speeds(shost) |= FC_PORTSPEED_10GBIT;
2934         if (phba->lmt & LMT_8Gb)
2935                 fc_host_supported_speeds(shost) |= FC_PORTSPEED_8GBIT;
2936         if (phba->lmt & LMT_4Gb)
2937                 fc_host_supported_speeds(shost) |= FC_PORTSPEED_4GBIT;
2938         if (phba->lmt & LMT_2Gb)
2939                 fc_host_supported_speeds(shost) |= FC_PORTSPEED_2GBIT;
2940         if (phba->lmt & LMT_1Gb)
2941                 fc_host_supported_speeds(shost) |= FC_PORTSPEED_1GBIT;
2942
2943         fc_host_maxframe_size(shost) =
2944                 (((uint32_t) vport->fc_sparam.cmn.bbRcvSizeMsb & 0x0F) << 8) |
2945                 (uint32_t) vport->fc_sparam.cmn.bbRcvSizeLsb;
2946
2947         fc_host_dev_loss_tmo(shost) = vport->cfg_devloss_tmo;
2948
2949         /* This value is also unchanging */
2950         memset(fc_host_active_fc4s(shost), 0,
2951                sizeof(fc_host_active_fc4s(shost)));
2952         fc_host_active_fc4s(shost)[2] = 1;
2953         fc_host_active_fc4s(shost)[7] = 1;
2954
2955         fc_host_max_npiv_vports(shost) = phba->max_vpi;
2956         spin_lock_irq(shost->host_lock);
2957         vport->load_flag &= ~FC_LOADING;
2958         spin_unlock_irq(shost->host_lock);
2959 }
2960
2961 /**
2962  * lpfc_stop_port_s3 - Stop SLI3 device port
2963  * @phba: pointer to lpfc hba data structure.
2964  *
2965  * This routine is invoked to stop an SLI3 device port, it stops the device
2966  * from generating interrupts and stops the device driver's timers for the
2967  * device.
2968  **/
2969 static void
2970 lpfc_stop_port_s3(struct lpfc_hba *phba)
2971 {
2972         /* Clear all interrupt enable conditions */
2973         writel(0, phba->HCregaddr);
2974         readl(phba->HCregaddr); /* flush */
2975         /* Clear all pending interrupts */
2976         writel(0xffffffff, phba->HAregaddr);
2977         readl(phba->HAregaddr); /* flush */
2978
2979         /* Reset some HBA SLI setup states */
2980         lpfc_stop_hba_timers(phba);
2981         phba->pport->work_port_events = 0;
2982 }
2983
2984 /**
2985  * lpfc_stop_port_s4 - Stop SLI4 device port
2986  * @phba: pointer to lpfc hba data structure.
2987  *
2988  * This routine is invoked to stop an SLI4 device port, it stops the device
2989  * from generating interrupts and stops the device driver's timers for the
2990  * device.
2991  **/
2992 static void
2993 lpfc_stop_port_s4(struct lpfc_hba *phba)
2994 {
2995         /* Reset some HBA SLI4 setup states */
2996         lpfc_stop_hba_timers(phba);
2997         phba->pport->work_port_events = 0;
2998         phba->sli4_hba.intr_enable = 0;
2999 }
3000
3001 /**
3002  * lpfc_stop_port - Wrapper function for stopping hba port
3003  * @phba: Pointer to HBA context object.
3004  *
3005  * This routine wraps the actual SLI3 or SLI4 hba stop port routine from
3006  * the API jump table function pointer from the lpfc_hba struct.
3007  **/
3008 void
3009 lpfc_stop_port(struct lpfc_hba *phba)
3010 {
3011         phba->lpfc_stop_port(phba);
3012 }
3013
3014 /**
3015  * lpfc_fcf_redisc_wait_start_timer - Start fcf rediscover wait timer
3016  * @phba: Pointer to hba for which this call is being executed.
3017  *
3018  * This routine starts the timer waiting for the FCF rediscovery to complete.
3019  **/
3020 void
3021 lpfc_fcf_redisc_wait_start_timer(struct lpfc_hba *phba)
3022 {
3023         unsigned long fcf_redisc_wait_tmo =
3024                 (jiffies + msecs_to_jiffies(LPFC_FCF_REDISCOVER_WAIT_TMO));
3025         /* Start fcf rediscovery wait period timer */
3026         mod_timer(&phba->fcf.redisc_wait, fcf_redisc_wait_tmo);
3027         spin_lock_irq(&phba->hbalock);
3028         /* Allow action to new fcf asynchronous event */
3029         phba->fcf.fcf_flag &= ~(FCF_AVAILABLE | FCF_SCAN_DONE);
3030         /* Mark the FCF rediscovery pending state */
3031         phba->fcf.fcf_flag |= FCF_REDISC_PEND;
3032         spin_unlock_irq(&phba->hbalock);
3033 }
3034
3035 /**
3036  * lpfc_sli4_fcf_redisc_wait_tmo - FCF table rediscover wait timeout
3037  * @ptr: Map to lpfc_hba data structure pointer.
3038  *
3039  * This routine is invoked when waiting for FCF table rediscover has been
3040  * timed out. If new FCF record(s) has (have) been discovered during the
3041  * wait period, a new FCF event shall be added to the FCOE async event
3042  * list, and then worker thread shall be waked up for processing from the
3043  * worker thread context.
3044  **/
3045 void
3046 lpfc_sli4_fcf_redisc_wait_tmo(unsigned long ptr)
3047 {
3048         struct lpfc_hba *phba = (struct lpfc_hba *)ptr;
3049
3050         /* Don't send FCF rediscovery event if timer cancelled */
3051         spin_lock_irq(&phba->hbalock);
3052         if (!(phba->fcf.fcf_flag & FCF_REDISC_PEND)) {
3053                 spin_unlock_irq(&phba->hbalock);
3054                 return;
3055         }
3056         /* Clear FCF rediscovery timer pending flag */
3057         phba->fcf.fcf_flag &= ~FCF_REDISC_PEND;
3058         /* FCF rediscovery event to worker thread */
3059         phba->fcf.fcf_flag |= FCF_REDISC_EVT;
3060         spin_unlock_irq(&phba->hbalock);
3061         lpfc_printf_log(phba, KERN_INFO, LOG_FIP,
3062                         "2776 FCF rediscover quiescent timer expired\n");
3063         /* wake up worker thread */
3064         lpfc_worker_wake_up(phba);
3065 }
3066
3067 /**
3068  * lpfc_sli4_parse_latt_fault - Parse sli4 link-attention link fault code
3069  * @phba: pointer to lpfc hba data structure.
3070  * @acqe_link: pointer to the async link completion queue entry.
3071  *
3072  * This routine is to parse the SLI4 link-attention link fault code and
3073  * translate it into the base driver's read link attention mailbox command
3074  * status.
3075  *
3076  * Return: Link-attention status in terms of base driver's coding.
3077  **/
3078 static uint16_t
3079 lpfc_sli4_parse_latt_fault(struct lpfc_hba *phba,
3080                            struct lpfc_acqe_link *acqe_link)
3081 {
3082         uint16_t latt_fault;
3083
3084         switch (bf_get(lpfc_acqe_link_fault, acqe_link)) {
3085         case LPFC_ASYNC_LINK_FAULT_NONE:
3086         case LPFC_ASYNC_LINK_FAULT_LOCAL:
3087         case LPFC_ASYNC_LINK_FAULT_REMOTE:
3088                 latt_fault = 0;
3089                 break;
3090         default:
3091                 lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
3092                                 "0398 Invalid link fault code: x%x\n",
3093                                 bf_get(lpfc_acqe_link_fault, acqe_link));
3094                 latt_fault = MBXERR_ERROR;
3095                 break;
3096         }
3097         return latt_fault;
3098 }
3099
3100 /**
3101  * lpfc_sli4_parse_latt_type - Parse sli4 link attention type
3102  * @phba: pointer to lpfc hba data structure.
3103  * @acqe_link: pointer to the async link completion queue entry.
3104  *
3105  * This routine is to parse the SLI4 link attention type and translate it
3106  * into the base driver's link attention type coding.
3107  *
3108  * Return: Link attention type in terms of base driver's coding.
3109  **/
3110 static uint8_t
3111 lpfc_sli4_parse_latt_type(struct lpfc_hba *phba,
3112                           struct lpfc_acqe_link *acqe_link)
3113 {
3114         uint8_t att_type;
3115
3116         switch (bf_get(lpfc_acqe_link_status, acqe_link)) {
3117         case LPFC_ASYNC_LINK_STATUS_DOWN:
3118         case LPFC_ASYNC_LINK_STATUS_LOGICAL_DOWN:
3119                 att_type = LPFC_ATT_LINK_DOWN;
3120                 break;
3121         case LPFC_ASYNC_LINK_STATUS_UP:
3122                 /* Ignore physical link up events - wait for logical link up */
3123                 att_type = LPFC_ATT_RESERVED;
3124                 break;
3125         case LPFC_ASYNC_LINK_STATUS_LOGICAL_UP:
3126                 att_type = LPFC_ATT_LINK_UP;
3127                 break;
3128         default:
3129                 lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
3130                                 "0399 Invalid link attention type: x%x\n",
3131                                 bf_get(lpfc_acqe_link_status, acqe_link));
3132                 att_type = LPFC_ATT_RESERVED;
3133                 break;
3134         }
3135         return att_type;
3136 }
3137
3138 /**
3139  * lpfc_sli4_parse_latt_link_speed - Parse sli4 link-attention link speed
3140  * @phba: pointer to lpfc hba data structure.
3141  * @acqe_link: pointer to the async link completion queue entry.
3142  *
3143  * This routine is to parse the SLI4 link-attention link speed and translate
3144  * it into the base driver's link-attention link speed coding.
3145  *
3146  * Return: Link-attention link speed in terms of base driver's coding.
3147  **/
3148 static uint8_t
3149 lpfc_sli4_parse_latt_link_speed(struct lpfc_hba *phba,
3150                                 struct lpfc_acqe_link *acqe_link)
3151 {
3152         uint8_t link_speed;
3153
3154         switch (bf_get(lpfc_acqe_link_speed, acqe_link)) {
3155         case LPFC_ASYNC_LINK_SPEED_ZERO:
3156         case LPFC_ASYNC_LINK_SPEED_10MBPS:
3157         case LPFC_ASYNC_LINK_SPEED_100MBPS:
3158                 link_speed = LPFC_LINK_SPEED_UNKNOWN;
3159                 break;
3160         case LPFC_ASYNC_LINK_SPEED_1GBPS:
3161                 link_speed = LPFC_LINK_SPEED_1GHZ;
3162                 break;
3163         case LPFC_ASYNC_LINK_SPEED_10GBPS:
3164                 link_speed = LPFC_LINK_SPEED_10GHZ;
3165                 break;
3166         default:
3167                 lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
3168                                 "0483 Invalid link-attention link speed: x%x\n",
3169                                 bf_get(lpfc_acqe_link_speed, acqe_link));
3170                 link_speed = LPFC_LINK_SPEED_UNKNOWN;
3171                 break;
3172         }
3173         return link_speed;
3174 }
3175
3176 /**
3177  * lpfc_sli4_async_link_evt - Process the asynchronous FCoE link event
3178  * @phba: pointer to lpfc hba data structure.
3179  * @acqe_link: pointer to the async link completion queue entry.
3180  *
3181  * This routine is to handle the SLI4 asynchronous FCoE link event.
3182  **/
3183 static void
3184 lpfc_sli4_async_link_evt(struct lpfc_hba *phba,
3185                          struct lpfc_acqe_link *acqe_link)
3186 {
3187         struct lpfc_dmabuf *mp;
3188         LPFC_MBOXQ_t *pmb;
3189         MAILBOX_t *mb;
3190         struct lpfc_mbx_read_top *la;
3191         uint8_t att_type;
3192         int rc;
3193
3194         att_type = lpfc_sli4_parse_latt_type(phba, acqe_link);
3195         if (att_type != LPFC_ATT_LINK_DOWN && att_type != LPFC_ATT_LINK_UP)
3196                 return;
3197         phba->fcoe_eventtag = acqe_link->event_tag;
3198         pmb = (LPFC_MBOXQ_t *)mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
3199         if (!pmb) {
3200                 lpfc_printf_log(phba, KERN_ERR, LOG_SLI,
3201                                 "0395 The mboxq allocation failed\n");
3202                 return;
3203         }
3204         mp = kmalloc(sizeof(struct lpfc_dmabuf), GFP_KERNEL);
3205         if (!mp) {
3206                 lpfc_printf_log(phba, KERN_ERR, LOG_SLI,
3207                                 "0396 The lpfc_dmabuf allocation failed\n");
3208                 goto out_free_pmb;
3209         }
3210         mp->virt = lpfc_mbuf_alloc(phba, 0, &mp->phys);
3211         if (!mp->virt) {
3212                 lpfc_printf_log(phba, KERN_ERR, LOG_SLI,
3213                                 "0397 The mbuf allocation failed\n");
3214                 goto out_free_dmabuf;
3215         }
3216
3217         /* Cleanup any outstanding ELS commands */
3218         lpfc_els_flush_all_cmd(phba);
3219
3220         /* Block ELS IOCBs until we have done process link event */
3221         phba->sli.ring[LPFC_ELS_RING].flag |= LPFC_STOP_IOCB_EVENT;
3222
3223         /* Update link event statistics */
3224         phba->sli.slistat.link_event++;
3225
3226         /* Create lpfc_handle_latt mailbox command from link ACQE */
3227         lpfc_read_topology(phba, pmb, mp);
3228         pmb->mbox_cmpl = lpfc_mbx_cmpl_read_topology;
3229         pmb->vport = phba->pport;
3230
3231         /* Keep the link status for extra SLI4 state machine reference */
3232         phba->sli4_hba.link_state.speed =
3233                                 bf_get(lpfc_acqe_link_speed, acqe_link);
3234         phba->sli4_hba.link_state.duplex =
3235                                 bf_get(lpfc_acqe_link_duplex, acqe_link);
3236         phba->sli4_hba.link_state.status =
3237                                 bf_get(lpfc_acqe_link_status, acqe_link);
3238         phba->sli4_hba.link_state.type =
3239                                 bf_get(lpfc_acqe_link_type, acqe_link);
3240         phba->sli4_hba.link_state.number =
3241                                 bf_get(lpfc_acqe_link_number, acqe_link);
3242         phba->sli4_hba.link_state.fault =
3243                                 bf_get(lpfc_acqe_link_fault, acqe_link);
3244         phba->sli4_hba.link_state.logical_speed =
3245                         bf_get(lpfc_acqe_logical_link_speed, acqe_link);
3246         lpfc_printf_log(phba, KERN_INFO, LOG_SLI,
3247                         "2900 Async FC/FCoE Link event - Speed:%dGBit "
3248                         "duplex:x%x LA Type:x%x Port Type:%d Port Number:%d "
3249                         "Logical speed:%dMbps Fault:%d\n",
3250                         phba->sli4_hba.link_state.speed,
3251                         phba->sli4_hba.link_state.topology,
3252                         phba->sli4_hba.link_state.status,
3253                         phba->sli4_hba.link_state.type,
3254                         phba->sli4_hba.link_state.number,
3255                         phba->sli4_hba.link_state.logical_speed * 10,
3256                         phba->sli4_hba.link_state.fault);
3257         /*
3258          * For FC Mode: issue the READ_TOPOLOGY mailbox command to fetch
3259          * topology info. Note: Optional for non FC-AL ports.
3260          */
3261         if (!(phba->hba_flag & HBA_FCOE_MODE)) {
3262                 rc = lpfc_sli_issue_mbox(phba, pmb, MBX_NOWAIT);
3263                 if (rc == MBX_NOT_FINISHED)
3264                         goto out_free_dmabuf;
3265                 return;
3266         }
3267         /*
3268          * For FCoE Mode: fill in all the topology information we need and call
3269          * the READ_TOPOLOGY completion routine to continue without actually
3270          * sending the READ_TOPOLOGY mailbox command to the port.
3271          */
3272         /* Parse and translate status field */
3273         mb = &pmb->u.mb;
3274         mb->mbxStatus = lpfc_sli4_parse_latt_fault(phba, acqe_link);
3275
3276         /* Parse and translate link attention fields */
3277         la = (struct lpfc_mbx_read_top *) &pmb->u.mb.un.varReadTop;
3278         la->eventTag = acqe_link->event_tag;
3279         bf_set(lpfc_mbx_read_top_att_type, la, att_type);
3280         bf_set(lpfc_mbx_read_top_link_spd, la,
3281                lpfc_sli4_parse_latt_link_speed(phba, acqe_link));
3282
3283         /* Fake the the following irrelvant fields */
3284         bf_set(lpfc_mbx_read_top_topology, la, LPFC_TOPOLOGY_PT_PT);
3285         bf_set(lpfc_mbx_read_top_alpa_granted, la, 0);
3286         bf_set(lpfc_mbx_read_top_il, la, 0);
3287         bf_set(lpfc_mbx_read_top_pb, la, 0);
3288         bf_set(lpfc_mbx_read_top_fa, la, 0);
3289         bf_set(lpfc_mbx_read_top_mm, la, 0);
3290
3291         /* Invoke the lpfc_handle_latt mailbox command callback function */
3292         lpfc_mbx_cmpl_read_topology(phba, pmb);
3293
3294         return;
3295
3296 out_free_dmabuf:
3297         kfree(mp);
3298 out_free_pmb:
3299         mempool_free(pmb, phba->mbox_mem_pool);
3300 }
3301
3302 /**
3303  * lpfc_sli4_async_fc_evt - Process the asynchronous FC link event
3304  * @phba: pointer to lpfc hba data structure.
3305  * @acqe_fc: pointer to the async fc completion queue entry.
3306  *
3307  * This routine is to handle the SLI4 asynchronous FC event. It will simply log
3308  * that the event was received and then issue a read_topology mailbox command so
3309  * that the rest of the driver will treat it the same as SLI3.
3310  **/
3311 static void
3312 lpfc_sli4_async_fc_evt(struct lpfc_hba *phba, struct lpfc_acqe_fc_la *acqe_fc)
3313 {
3314         struct lpfc_dmabuf *mp;
3315         LPFC_MBOXQ_t *pmb;
3316         int rc;
3317
3318         if (bf_get(lpfc_trailer_type, acqe_fc) !=
3319             LPFC_FC_LA_EVENT_TYPE_FC_LINK) {
3320                 lpfc_printf_log(phba, KERN_ERR, LOG_SLI,
3321                                 "2895 Non FC link Event detected.(%d)\n",
3322                                 bf_get(lpfc_trailer_type, acqe_fc));
3323                 return;
3324         }
3325         /* Keep the link status for extra SLI4 state machine reference */
3326         phba->sli4_hba.link_state.speed =
3327                                 bf_get(lpfc_acqe_fc_la_speed, acqe_fc);
3328         phba->sli4_hba.link_state.duplex = LPFC_ASYNC_LINK_DUPLEX_FULL;
3329         phba->sli4_hba.link_state.topology =
3330                                 bf_get(lpfc_acqe_fc_la_topology, acqe_fc);
3331         phba->sli4_hba.link_state.status =
3332                                 bf_get(lpfc_acqe_fc_la_att_type, acqe_fc);
3333         phba->sli4_hba.link_state.type =
3334                                 bf_get(lpfc_acqe_fc_la_port_type, acqe_fc);
3335         phba->sli4_hba.link_state.number =
3336                                 bf_get(lpfc_acqe_fc_la_port_number, acqe_fc);
3337         phba->sli4_hba.link_state.fault =
3338                                 bf_get(lpfc_acqe_link_fault, acqe_fc);
3339         phba->sli4_hba.link_state.logical_speed =
3340                                 bf_get(lpfc_acqe_fc_la_llink_spd, acqe_fc);
3341         lpfc_printf_log(phba, KERN_INFO, LOG_SLI,
3342                         "2896 Async FC event - Speed:%dGBaud Topology:x%x "
3343                         "LA Type:x%x Port Type:%d Port Number:%d Logical speed:"
3344                         "%dMbps Fault:%d\n",
3345                         phba->sli4_hba.link_state.speed,
3346                         phba->sli4_hba.link_state.topology,
3347                         phba->sli4_hba.link_state.status,
3348                         phba->sli4_hba.link_state.type,
3349                         phba->sli4_hba.link_state.number,
3350                         phba->sli4_hba.link_state.logical_speed * 10,
3351                         phba->sli4_hba.link_state.fault);
3352         pmb = (LPFC_MBOXQ_t *)mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
3353         if (!pmb) {
3354                 lpfc_printf_log(phba, KERN_ERR, LOG_SLI,
3355                                 "2897 The mboxq allocation failed\n");
3356                 return;
3357         }
3358         mp = kmalloc(sizeof(struct lpfc_dmabuf), GFP_KERNEL);
3359         if (!mp) {
3360                 lpfc_printf_log(phba, KERN_ERR, LOG_SLI,
3361                                 "2898 The lpfc_dmabuf allocation failed\n");
3362                 goto out_free_pmb;
3363         }
3364         mp->virt = lpfc_mbuf_alloc(phba, 0, &mp->phys);
3365         if (!mp->virt) {
3366                 lpfc_printf_log(phba, KERN_ERR, LOG_SLI,
3367                                 "2899 The mbuf allocation failed\n");
3368                 goto out_free_dmabuf;
3369         }
3370
3371         /* Cleanup any outstanding ELS commands */
3372         lpfc_els_flush_all_cmd(phba);
3373
3374         /* Block ELS IOCBs until we have done process link event */
3375         phba->sli.ring[LPFC_ELS_RING].flag |= LPFC_STOP_IOCB_EVENT;
3376
3377         /* Update link event statistics */
3378         phba->sli.slistat.link_event++;
3379
3380         /* Create lpfc_handle_latt mailbox command from link ACQE */
3381         lpfc_read_topology(phba, pmb, mp);
3382         pmb->mbox_cmpl = lpfc_mbx_cmpl_read_topology;
3383         pmb->vport = phba->pport;
3384
3385         rc = lpfc_sli_issue_mbox(phba, pmb, MBX_NOWAIT);
3386         if (rc == MBX_NOT_FINISHED)
3387                 goto out_free_dmabuf;
3388         return;
3389
3390 out_free_dmabuf:
3391         kfree(mp);
3392 out_free_pmb:
3393         mempool_free(pmb, phba->mbox_mem_pool);
3394 }
3395
3396 /**
3397  * lpfc_sli4_async_sli_evt - Process the asynchronous SLI link event
3398  * @phba: pointer to lpfc hba data structure.
3399  * @acqe_fc: pointer to the async SLI completion queue entry.
3400  *
3401  * This routine is to handle the SLI4 asynchronous SLI events.
3402  **/
3403 static void
3404 lpfc_sli4_async_sli_evt(struct lpfc_hba *phba, struct lpfc_acqe_sli *acqe_sli)
3405 {
3406         lpfc_printf_log(phba, KERN_INFO, LOG_SLI,
3407                         "2901 Async SLI event - Event Data1:x%08x Event Data2:"
3408                         "x%08x SLI Event Type:%d",
3409                         acqe_sli->event_data1, acqe_sli->event_data2,
3410                         bf_get(lpfc_trailer_type, acqe_sli));
3411         return;
3412 }
3413
3414 /**
3415  * lpfc_sli4_perform_vport_cvl - Perform clear virtual link on a vport
3416  * @vport: pointer to vport data structure.
3417  *
3418  * This routine is to perform Clear Virtual Link (CVL) on a vport in
3419  * response to a CVL event.
3420  *
3421  * Return the pointer to the ndlp with the vport if successful, otherwise
3422  * return NULL.
3423  **/
3424 static struct lpfc_nodelist *
3425 lpfc_sli4_perform_vport_cvl(struct lpfc_vport *vport)
3426 {
3427         struct lpfc_nodelist *ndlp;
3428         struct Scsi_Host *shost;
3429         struct lpfc_hba *phba;
3430
3431         if (!vport)
3432                 return NULL;
3433         phba = vport->phba;
3434         if (!phba)
3435                 return NULL;
3436         ndlp = lpfc_findnode_did(vport, Fabric_DID);
3437         if (!ndlp) {
3438                 /* Cannot find existing Fabric ndlp, so allocate a new one */
3439                 ndlp = mempool_alloc(phba->nlp_mem_pool, GFP_KERNEL);
3440                 if (!ndlp)
3441                         return 0;
3442                 lpfc_nlp_init(vport, ndlp, Fabric_DID);
3443                 /* Set the node type */
3444                 ndlp->nlp_type |= NLP_FABRIC;
3445                 /* Put ndlp onto node list */
3446                 lpfc_enqueue_node(vport, ndlp);
3447         } else if (!NLP_CHK_NODE_ACT(ndlp)) {
3448                 /* re-setup ndlp without removing from node list */
3449                 ndlp = lpfc_enable_node(vport, ndlp, NLP_STE_UNUSED_NODE);
3450                 if (!ndlp)
3451                         return 0;
3452         }
3453         if ((phba->pport->port_state < LPFC_FLOGI) &&
3454                 (phba->pport->port_state != LPFC_VPORT_FAILED))
3455                 return NULL;
3456         /* If virtual link is not yet instantiated ignore CVL */
3457         if ((vport != phba->pport) && (vport->port_state < LPFC_FDISC)
3458                 && (vport->port_state != LPFC_VPORT_FAILED))
3459                 return NULL;
3460         shost = lpfc_shost_from_vport(vport);
3461         if (!shost)
3462                 return NULL;
3463         lpfc_linkdown_port(vport);
3464         lpfc_cleanup_pending_mbox(vport);
3465         spin_lock_irq(shost->host_lock);
3466         vport->fc_flag |= FC_VPORT_CVL_RCVD;
3467         spin_unlock_irq(shost->host_lock);
3468
3469         return ndlp;
3470 }
3471
3472 /**
3473  * lpfc_sli4_perform_all_vport_cvl - Perform clear virtual link on all vports
3474  * @vport: pointer to lpfc hba data structure.
3475  *
3476  * This routine is to perform Clear Virtual Link (CVL) on all vports in
3477  * response to a FCF dead event.
3478  **/
3479 static void
3480 lpfc_sli4_perform_all_vport_cvl(struct lpfc_hba *phba)
3481 {
3482         struct lpfc_vport **vports;
3483         int i;
3484
3485         vports = lpfc_create_vport_work_array(phba);
3486         if (vports)
3487                 for (i = 0; i <= phba->max_vports && vports[i] != NULL; i++)
3488                         lpfc_sli4_perform_vport_cvl(vports[i]);
3489         lpfc_destroy_vport_work_array(phba, vports);
3490 }
3491
3492 /**
3493  * lpfc_sli4_async_fip_evt - Process the asynchronous FCoE FIP event
3494  * @phba: pointer to lpfc hba data structure.
3495  * @acqe_link: pointer to the async fcoe completion queue entry.
3496  *
3497  * This routine is to handle the SLI4 asynchronous fcoe event.
3498  **/
3499 static void
3500 lpfc_sli4_async_fip_evt(struct lpfc_hba *phba,
3501                         struct lpfc_acqe_fip *acqe_fip)
3502 {
3503         uint8_t event_type = bf_get(lpfc_trailer_type, acqe_fip);
3504         int rc;
3505         struct lpfc_vport *vport;
3506         struct lpfc_nodelist *ndlp;
3507         struct Scsi_Host  *shost;
3508         int active_vlink_present;
3509         struct lpfc_vport **vports;
3510         int i;
3511
3512         phba->fc_eventTag = acqe_fip->event_tag;
3513         phba->fcoe_eventtag = acqe_fip->event_tag;
3514         switch (event_type) {
3515         case LPFC_FIP_EVENT_TYPE_NEW_FCF:
3516         case LPFC_FIP_EVENT_TYPE_FCF_PARAM_MOD:
3517                 if (event_type == LPFC_FIP_EVENT_TYPE_NEW_FCF)
3518                         lpfc_printf_log(phba, KERN_ERR, LOG_FIP |
3519                                         LOG_DISCOVERY,
3520                                         "2546 New FCF event, evt_tag:x%x, "
3521                                         "index:x%x\n",
3522                                         acqe_fip->event_tag,
3523                                         acqe_fip->index);
3524                 else
3525                         lpfc_printf_log(phba, KERN_WARNING, LOG_FIP |
3526                                         LOG_DISCOVERY,
3527                                         "2788 FCF param modified event, "
3528                                         "evt_tag:x%x, index:x%x\n",
3529                                         acqe_fip->event_tag,
3530                                         acqe_fip->index);
3531                 if (phba->fcf.fcf_flag & FCF_DISCOVERY) {
3532                         /*
3533                          * During period of FCF discovery, read the FCF
3534                          * table record indexed by the event to update
3535                          * FCF roundrobin failover eligible FCF bmask.
3536                          */
3537                         lpfc_printf_log(phba, KERN_INFO, LOG_FIP |
3538                                         LOG_DISCOVERY,
3539                                         "2779 Read FCF (x%x) for updating "
3540                                         "roundrobin FCF failover bmask\n",
3541                                         acqe_fip->index);
3542                         rc = lpfc_sli4_read_fcf_rec(phba, acqe_fip->index);
3543                 }
3544
3545                 /* If the FCF discovery is in progress, do nothing. */
3546                 spin_lock_irq(&phba->hbalock);
3547                 if (phba->hba_flag & FCF_TS_INPROG) {
3548                         spin_unlock_irq(&phba->hbalock);
3549                         break;
3550                 }
3551                 /* If fast FCF failover rescan event is pending, do nothing */
3552                 if (phba->fcf.fcf_flag & FCF_REDISC_EVT) {
3553                         spin_unlock_irq(&phba->hbalock);
3554                         break;
3555                 }
3556
3557                 /* If the FCF has been in discovered state, do nothing. */
3558                 if (phba->fcf.fcf_flag & FCF_SCAN_DONE) {
3559                         spin_unlock_irq(&phba->hbalock);
3560                         break;
3561                 }
3562                 spin_unlock_irq(&phba->hbalock);
3563
3564                 /* Otherwise, scan the entire FCF table and re-discover SAN */
3565                 lpfc_printf_log(phba, KERN_INFO, LOG_FIP | LOG_DISCOVERY,
3566                                 "2770 Start FCF table scan per async FCF "
3567                                 "event, evt_tag:x%x, index:x%x\n",
3568                                 acqe_fip->event_tag, acqe_fip->index);
3569                 rc = lpfc_sli4_fcf_scan_read_fcf_rec(phba,
3570                                                      LPFC_FCOE_FCF_GET_FIRST);
3571                 if (rc)
3572                         lpfc_printf_log(phba, KERN_ERR, LOG_FIP | LOG_DISCOVERY,
3573                                         "2547 Issue FCF scan read FCF mailbox "
3574                                         "command failed (x%x)\n", rc);
3575                 break;
3576
3577         case LPFC_FIP_EVENT_TYPE_FCF_TABLE_FULL:
3578                 lpfc_printf_log(phba, KERN_ERR, LOG_SLI,
3579                         "2548 FCF Table full count 0x%x tag 0x%x\n",
3580                         bf_get(lpfc_acqe_fip_fcf_count, acqe_fip),
3581                         acqe_fip->event_tag);
3582                 break;
3583
3584         case LPFC_FIP_EVENT_TYPE_FCF_DEAD:
3585                 lpfc_printf_log(phba, KERN_ERR, LOG_FIP | LOG_DISCOVERY,
3586                         "2549 FCF (x%x) disconnected from network, "
3587                         "tag:x%x\n", acqe_fip->index, acqe_fip->event_tag);
3588                 /*
3589                  * If we are in the middle of FCF failover process, clear
3590                  * the corresponding FCF bit in the roundrobin bitmap.
3591                  */
3592                 spin_lock_irq(&phba->hbalock);
3593                 if (phba->fcf.fcf_flag & FCF_DISCOVERY) {
3594                         spin_unlock_irq(&phba->hbalock);
3595                         /* Update FLOGI FCF failover eligible FCF bmask */
3596                         lpfc_sli4_fcf_rr_index_clear(phba, acqe_fip->index);
3597                         break;
3598                 }
3599                 spin_unlock_irq(&phba->hbalock);
3600
3601                 /* If the event is not for currently used fcf do nothing */
3602                 if (phba->fcf.current_rec.fcf_indx != acqe_fip->index)
3603                         break;
3604
3605                 /*
3606                  * Otherwise, request the port to rediscover the entire FCF
3607                  * table for a fast recovery from case that the current FCF
3608                  * is no longer valid as we are not in the middle of FCF
3609                  * failover process already.
3610                  */
3611                 spin_lock_irq(&phba->hbalock);
3612                 /* Mark the fast failover process in progress */
3613                 phba->fcf.fcf_flag |= FCF_DEAD_DISC;
3614                 spin_unlock_irq(&phba->hbalock);
3615
3616                 lpfc_printf_log(phba, KERN_INFO, LOG_FIP | LOG_DISCOVERY,
3617                                 "2771 Start FCF fast failover process due to "
3618                                 "FCF DEAD event: evt_tag:x%x, fcf_index:x%x "
3619                                 "\n", acqe_fip->event_tag, acqe_fip->index);
3620                 rc = lpfc_sli4_redisc_fcf_table(phba);
3621                 if (rc) {
3622                         lpfc_printf_log(phba, KERN_ERR, LOG_FIP |
3623                                         LOG_DISCOVERY,
3624                                         "2772 Issue FCF rediscover mabilbox "
3625                                         "command failed, fail through to FCF "
3626                                         "dead event\n");
3627                         spin_lock_irq(&phba->hbalock);
3628                         phba->fcf.fcf_flag &= ~FCF_DEAD_DISC;
3629                         spin_unlock_irq(&phba->hbalock);
3630                         /*
3631                          * Last resort will fail over by treating this
3632                          * as a link down to FCF registration.
3633                          */
3634                         lpfc_sli4_fcf_dead_failthrough(phba);
3635                 } else {
3636                         /* Reset FCF roundrobin bmask for new discovery */
3637                         memset(phba->fcf.fcf_rr_bmask, 0,
3638                                sizeof(*phba->fcf.fcf_rr_bmask));
3639                         /*
3640                          * Handling fast FCF failover to a DEAD FCF event is
3641                          * considered equalivant to receiving CVL to all vports.
3642                          */
3643                         lpfc_sli4_perform_all_vport_cvl(phba);
3644                 }
3645                 break;
3646         case LPFC_FIP_EVENT_TYPE_CVL:
3647                 lpfc_printf_log(phba, KERN_ERR, LOG_FIP | LOG_DISCOVERY,
3648                         "2718 Clear Virtual Link Received for VPI 0x%x"
3649                         " tag 0x%x\n", acqe_fip->index, acqe_fip->event_tag);
3650
3651                 vport = lpfc_find_vport_by_vpid(phba,
3652                                                 acqe_fip->index);
3653                 ndlp = lpfc_sli4_perform_vport_cvl(vport);
3654                 if (!ndlp)
3655                         break;
3656                 active_vlink_present = 0;
3657
3658                 vports = lpfc_create_vport_work_array(phba);
3659                 if (vports) {
3660                         for (i = 0; i <= phba->max_vports && vports[i] != NULL;
3661                                         i++) {
3662                                 if ((!(vports[i]->fc_flag &
3663                                         FC_VPORT_CVL_RCVD)) &&
3664                                         (vports[i]->port_state > LPFC_FDISC)) {
3665                                         active_vlink_present = 1;
3666                                         break;
3667                                 }
3668                         }
3669                         lpfc_destroy_vport_work_array(phba, vports);
3670                 }
3671
3672                 if (active_vlink_present) {
3673                         /*
3674                          * If there are other active VLinks present,
3675                          * re-instantiate the Vlink using FDISC.
3676                          */
3677                         mod_timer(&ndlp->nlp_delayfunc, jiffies + HZ);
3678                         shost = lpfc_shost_from_vport(vport);
3679                         spin_lock_irq(shost->host_lock);
3680                         ndlp->nlp_flag |= NLP_DELAY_TMO;
3681                         spin_unlock_irq(shost->host_lock);
3682                         ndlp->nlp_last_elscmd = ELS_CMD_FDISC;
3683                         vport->port_state = LPFC_FDISC;
3684                 } else {
3685                         /*
3686                          * Otherwise, we request port to rediscover
3687                          * the entire FCF table for a fast recovery
3688                          * from possible case that the current FCF
3689                          * is no longer valid if we are not already
3690                          * in the FCF failover process.
3691                          */
3692                         spin_lock_irq(&phba->hbalock);
3693                         if (phba->fcf.fcf_flag & FCF_DISCOVERY) {
3694                                 spin_unlock_irq(&phba->hbalock);
3695                                 break;
3696                         }
3697                         /* Mark the fast failover process in progress */
3698                         phba->fcf.fcf_flag |= FCF_ACVL_DISC;
3699                         spin_unlock_irq(&phba->hbalock);
3700                         lpfc_printf_log(phba, KERN_INFO, LOG_FIP |
3701                                         LOG_DISCOVERY,
3702                                         "2773 Start FCF failover per CVL, "
3703                                         "evt_tag:x%x\n", acqe_fip->event_tag);
3704                         rc = lpfc_sli4_redisc_fcf_table(phba);
3705                         if (rc) {
3706                                 lpfc_printf_log(phba, KERN_ERR, LOG_FIP |
3707                                                 LOG_DISCOVERY,
3708                                                 "2774 Issue FCF rediscover "
3709                                                 "mabilbox command failed, "
3710                                                 "through to CVL event\n");
3711                                 spin_lock_irq(&phba->hbalock);
3712                                 phba->fcf.fcf_flag &= ~FCF_ACVL_DISC;
3713                                 spin_unlock_irq(&phba->hbalock);
3714                                 /*
3715                                  * Last resort will be re-try on the
3716                                  * the current registered FCF entry.
3717                                  */
3718                                 lpfc_retry_pport_discovery(phba);
3719                         } else
3720                                 /*
3721                                  * Reset FCF roundrobin bmask for new
3722                                  * discovery.
3723                                  */
3724                                 memset(phba->fcf.fcf_rr_bmask, 0,
3725                                        sizeof(*phba->fcf.fcf_rr_bmask));
3726                 }
3727                 break;
3728         default:
3729                 lpfc_printf_log(phba, KERN_ERR, LOG_SLI,
3730                         "0288 Unknown FCoE event type 0x%x event tag "
3731                         "0x%x\n", event_type, acqe_fip->event_tag);
3732                 break;
3733         }
3734 }
3735
3736 /**
3737  * lpfc_sli4_async_dcbx_evt - Process the asynchronous dcbx event
3738  * @phba: pointer to lpfc hba data structure.
3739  * @acqe_link: pointer to the async dcbx completion queue entry.
3740  *
3741  * This routine is to handle the SLI4 asynchronous dcbx event.
3742  **/
3743 static void
3744 lpfc_sli4_async_dcbx_evt(struct lpfc_hba *phba,
3745                          struct lpfc_acqe_dcbx *acqe_dcbx)
3746 {
3747         phba->fc_eventTag = acqe_dcbx->event_tag;
3748         lpfc_printf_log(phba, KERN_ERR, LOG_SLI,
3749                         "0290 The SLI4 DCBX asynchronous event is not "
3750                         "handled yet\n");
3751 }
3752
3753 /**
3754  * lpfc_sli4_async_grp5_evt - Process the asynchronous group5 event
3755  * @phba: pointer to lpfc hba data structure.
3756  * @acqe_link: pointer to the async grp5 completion queue entry.
3757  *
3758  * This routine is to handle the SLI4 asynchronous grp5 event. A grp5 event
3759  * is an asynchronous notified of a logical link speed change.  The Port
3760  * reports the logical link speed in units of 10Mbps.
3761  **/
3762 static void
3763 lpfc_sli4_async_grp5_evt(struct lpfc_hba *phba,
3764                          struct lpfc_acqe_grp5 *acqe_grp5)
3765 {
3766         uint16_t prev_ll_spd;
3767
3768         phba->fc_eventTag = acqe_grp5->event_tag;
3769         phba->fcoe_eventtag = acqe_grp5->event_tag;
3770         prev_ll_spd = phba->sli4_hba.link_state.logical_speed;
3771         phba->sli4_hba.link_state.logical_speed =
3772                 (bf_get(lpfc_acqe_grp5_llink_spd, acqe_grp5));
3773         lpfc_printf_log(phba, KERN_INFO, LOG_SLI,
3774                         "2789 GRP5 Async Event: Updating logical link speed "
3775                         "from %dMbps to %dMbps\n", (prev_ll_spd * 10),
3776                         (phba->sli4_hba.link_state.logical_speed*10));
3777 }
3778
3779 /**
3780  * lpfc_sli4_async_event_proc - Process all the pending asynchronous event
3781  * @phba: pointer to lpfc hba data structure.
3782  *
3783  * This routine is invoked by the worker thread to process all the pending
3784  * SLI4 asynchronous events.
3785  **/
3786 void lpfc_sli4_async_event_proc(struct lpfc_hba *phba)
3787 {
3788         struct lpfc_cq_event *cq_event;
3789
3790         /* First, declare the async event has been handled */
3791         spin_lock_irq(&phba->hbalock);
3792         phba->hba_flag &= ~ASYNC_EVENT;
3793         spin_unlock_irq(&phba->hbalock);
3794         /* Now, handle all the async events */
3795         while (!list_empty(&phba->sli4_hba.sp_asynce_work_queue)) {
3796                 /* Get the first event from the head of the event queue */
3797                 spin_lock_irq(&phba->hbalock);
3798                 list_remove_head(&phba->sli4_hba.sp_asynce_work_queue,
3799                                  cq_event, struct lpfc_cq_event, list);
3800                 spin_unlock_irq(&phba->hbalock);
3801                 /* Process the asynchronous event */
3802                 switch (bf_get(lpfc_trailer_code, &cq_event->cqe.mcqe_cmpl)) {
3803                 case LPFC_TRAILER_CODE_LINK:
3804                         lpfc_sli4_async_link_evt(phba,
3805                                                  &cq_event->cqe.acqe_link);
3806                         break;
3807                 case LPFC_TRAILER_CODE_FCOE:
3808                         lpfc_sli4_async_fip_evt(phba, &cq_event->cqe.acqe_fip);
3809                         break;
3810                 case LPFC_TRAILER_CODE_DCBX:
3811                         lpfc_sli4_async_dcbx_evt(phba,
3812                                                  &cq_event->cqe.acqe_dcbx);
3813                         break;
3814                 case LPFC_TRAILER_CODE_GRP5:
3815                         lpfc_sli4_async_grp5_evt(phba,
3816                                                  &cq_event->cqe.acqe_grp5);
3817                         break;
3818                 case LPFC_TRAILER_CODE_FC:
3819                         lpfc_sli4_async_fc_evt(phba, &cq_event->cqe.acqe_fc);
3820                         break;
3821                 case LPFC_TRAILER_CODE_SLI:
3822                         lpfc_sli4_async_sli_evt(phba, &cq_event->cqe.acqe_sli);
3823                         break;
3824                 default:
3825                         lpfc_printf_log(phba, KERN_ERR, LOG_SLI,
3826                                         "1804 Invalid asynchrous event code: "
3827                                         "x%x\n", bf_get(lpfc_trailer_code,
3828                                         &cq_event->cqe.mcqe_cmpl));
3829                         break;
3830                 }
3831                 /* Free the completion event processed to the free pool */
3832                 lpfc_sli4_cq_event_release(phba, cq_event);
3833         }
3834 }
3835
3836 /**
3837  * lpfc_sli4_fcf_redisc_event_proc - Process fcf table rediscovery event
3838  * @phba: pointer to lpfc hba data structure.
3839  *
3840  * This routine is invoked by the worker thread to process FCF table
3841  * rediscovery pending completion event.
3842  **/
3843 void lpfc_sli4_fcf_redisc_event_proc(struct lpfc_hba *phba)
3844 {
3845         int rc;
3846
3847         spin_lock_irq(&phba->hbalock);
3848         /* Clear FCF rediscovery timeout event */
3849         phba->fcf.fcf_flag &= ~FCF_REDISC_EVT;
3850         /* Clear driver fast failover FCF record flag */
3851         phba->fcf.failover_rec.flag = 0;
3852         /* Set state for FCF fast failover */
3853         phba->fcf.fcf_flag |= FCF_REDISC_FOV;
3854         spin_unlock_irq(&phba->hbalock);
3855
3856         /* Scan FCF table from the first entry to re-discover SAN */
3857         lpfc_printf_log(phba, KERN_INFO, LOG_FIP | LOG_DISCOVERY,
3858                         "2777 Start post-quiescent FCF table scan\n");
3859         rc = lpfc_sli4_fcf_scan_read_fcf_rec(phba, LPFC_FCOE_FCF_GET_FIRST);
3860         if (rc)
3861                 lpfc_printf_log(phba, KERN_ERR, LOG_FIP | LOG_DISCOVERY,
3862                                 "2747 Issue FCF scan read FCF mailbox "
3863                                 "command failed 0x%x\n", rc);
3864 }
3865
3866 /**
3867  * lpfc_api_table_setup - Set up per hba pci-device group func api jump table
3868  * @phba: pointer to lpfc hba data structure.
3869  * @dev_grp: The HBA PCI-Device group number.
3870  *
3871  * This routine is invoked to set up the per HBA PCI-Device group function
3872  * API jump table entries.
3873  *
3874  * Return: 0 if success, otherwise -ENODEV
3875  **/
3876 int
3877 lpfc_api_table_setup(struct lpfc_hba *phba, uint8_t dev_grp)
3878 {
3879         int rc;
3880
3881         /* Set up lpfc PCI-device group */
3882         phba->pci_dev_grp = dev_grp;
3883
3884         /* The LPFC_PCI_DEV_OC uses SLI4 */
3885         if (dev_grp == LPFC_PCI_DEV_OC)
3886                 phba->sli_rev = LPFC_SLI_REV4;
3887
3888         /* Set up device INIT API function jump table */
3889         rc = lpfc_init_api_table_setup(phba, dev_grp);
3890         if (rc)
3891                 return -ENODEV;
3892         /* Set up SCSI API function jump table */
3893         rc = lpfc_scsi_api_table_setup(phba, dev_grp);
3894         if (rc)
3895                 return -ENODEV;
3896         /* Set up SLI API function jump table */
3897         rc = lpfc_sli_api_table_setup(phba, dev_grp);
3898         if (rc)
3899                 return -ENODEV;
3900         /* Set up MBOX API function jump table */
3901         rc = lpfc_mbox_api_table_setup(phba, dev_grp);
3902         if (rc)
3903                 return -ENODEV;
3904
3905         return 0;
3906 }
3907
3908 /**
3909  * lpfc_log_intr_mode - Log the active interrupt mode
3910  * @phba: pointer to lpfc hba data structure.
3911  * @intr_mode: active interrupt mode adopted.
3912  *
3913  * This routine it invoked to log the currently used active interrupt mode
3914  * to the device.
3915  **/
3916 static void lpfc_log_intr_mode(struct lpfc_hba *phba, uint32_t intr_mode)
3917 {
3918         switch (intr_mode) {
3919         case 0:
3920                 lpfc_printf_log(phba, KERN_INFO, LOG_INIT,
3921                                 "0470 Enable INTx interrupt mode.\n");
3922                 break;
3923         case 1:
3924                 lpfc_printf_log(phba, KERN_INFO, LOG_INIT,
3925                                 "0481 Enabled MSI interrupt mode.\n");
3926                 break;
3927         case 2:
3928                 lpfc_printf_log(phba, KERN_INFO, LOG_INIT,
3929                                 "0480 Enabled MSI-X interrupt mode.\n");
3930                 break;
3931         default:
3932                 lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
3933                                 "0482 Illegal interrupt mode.\n");
3934                 break;
3935         }
3936         return;
3937 }
3938
3939 /**
3940  * lpfc_enable_pci_dev - Enable a generic PCI device.
3941  * @phba: pointer to lpfc hba data structure.
3942  *
3943  * This routine is invoked to enable the PCI device that is common to all
3944  * PCI devices.
3945  *
3946  * Return codes
3947  *      0 - successful
3948  *      other values - error
3949  **/
3950 static int
3951 lpfc_enable_pci_dev(struct lpfc_hba *phba)
3952 {
3953         struct pci_dev *pdev;
3954         int bars;
3955
3956         /* Obtain PCI device reference */
3957         if (!phba->pcidev)
3958                 goto out_error;
3959         else
3960                 pdev = phba->pcidev;
3961         /* Select PCI BARs */
3962         bars = pci_select_bars(pdev, IORESOURCE_MEM);
3963         /* Enable PCI device */
3964         if (pci_enable_device_mem(pdev))
3965                 goto out_error;
3966         /* Request PCI resource for the device */
3967         if (pci_request_selected_regions(pdev, bars, LPFC_DRIVER_NAME))
3968                 goto out_disable_device;
3969         /* Set up device as PCI master and save state for EEH */
3970         pci_set_master(pdev);
3971         pci_try_set_mwi(pdev);
3972         pci_save_state(pdev);
3973
3974         /* PCIe EEH recovery on powerpc platforms needs fundamental reset */
3975         if (pci_find_capability(pdev, PCI_CAP_ID_EXP))
3976                 pdev->needs_freset = 1;
3977
3978         return 0;
3979
3980 out_disable_device:
3981         pci_disable_device(pdev);
3982 out_error:
3983         return -ENODEV;
3984 }
3985
3986 /**
3987  * lpfc_disable_pci_dev - Disable a generic PCI device.
3988  * @phba: pointer to lpfc hba data structure.
3989  *
3990  * This routine is invoked to disable the PCI device that is common to all
3991  * PCI devices.
3992  **/
3993 static void
3994 lpfc_disable_pci_dev(struct lpfc_hba *phba)
3995 {
3996         struct pci_dev *pdev;
3997         int bars;
3998
3999         /* Obtain PCI device reference */
4000         if (!phba->pcidev)
4001                 return;
4002         else
4003                 pdev = phba->pcidev;
4004         /* Select PCI BARs */
4005         bars = pci_select_bars(pdev, IORESOURCE_MEM);
4006         /* Release PCI resource and disable PCI device */
4007         pci_release_selected_regions(pdev, bars);
4008         pci_disable_device(pdev);
4009         /* Null out PCI private reference to driver */
4010         pci_set_drvdata(pdev, NULL);
4011
4012         return;
4013 }
4014
4015 /**
4016  * lpfc_reset_hba - Reset a hba
4017  * @phba: pointer to lpfc hba data structure.
4018  *
4019  * This routine is invoked to reset a hba device. It brings the HBA
4020  * offline, performs a board restart, and then brings the board back
4021  * online. The lpfc_offline calls lpfc_sli_hba_down which will clean up
4022  * on outstanding mailbox commands.
4023  **/
4024 void
4025 lpfc_reset_hba(struct lpfc_hba *phba)
4026 {
4027         /* If resets are disabled then set error state and return. */
4028         if (!phba->cfg_enable_hba_reset) {
4029                 phba->link_state = LPFC_HBA_ERROR;
4030                 return;
4031         }
4032         lpfc_offline_prep(phba);
4033         lpfc_offline(phba);
4034         lpfc_sli_brdrestart(phba);
4035         lpfc_online(phba);
4036         lpfc_unblock_mgmt_io(phba);
4037 }
4038
4039 /**
4040  * lpfc_sli_sriov_nr_virtfn_get - Get the number of sr-iov virtual functions
4041  * @phba: pointer to lpfc hba data structure.
4042  *
4043  * This function enables the PCI SR-IOV virtual functions to a physical
4044  * function. It invokes the PCI SR-IOV api with the @nr_vfn provided to
4045  * enable the number of virtual functions to the physical function. As
4046  * not all devices support SR-IOV, the return code from the pci_enable_sriov()
4047  * API call does not considered as an error condition for most of the device.
4048  **/
4049 uint16_t
4050 lpfc_sli_sriov_nr_virtfn_get(struct lpfc_hba *phba)
4051 {
4052         struct pci_dev *pdev = phba->pcidev;
4053         uint16_t nr_virtfn;
4054         int pos;
4055
4056         if (!pdev->is_physfn)
4057                 return 0;
4058
4059         pos = pci_find_ext_capability(pdev, PCI_EXT_CAP_ID_SRIOV);
4060         if (pos == 0)
4061                 return 0;
4062
4063         pci_read_config_word(pdev, pos + PCI_SRIOV_TOTAL_VF, &nr_virtfn);
4064         return nr_virtfn;
4065 }
4066
4067 /**
4068  * lpfc_sli_probe_sriov_nr_virtfn - Enable a number of sr-iov virtual functions
4069  * @phba: pointer to lpfc hba data structure.
4070  * @nr_vfn: number of virtual functions to be enabled.
4071  *
4072  * This function enables the PCI SR-IOV virtual functions to a physical
4073  * function. It invokes the PCI SR-IOV api with the @nr_vfn provided to
4074  * enable the number of virtual functions to the physical function. As
4075  * not all devices support SR-IOV, the return code from the pci_enable_sriov()
4076  * API call does not considered as an error condition for most of the device.
4077  **/
4078 int
4079 lpfc_sli_probe_sriov_nr_virtfn(struct lpfc_hba *phba, int nr_vfn)
4080 {
4081         struct pci_dev *pdev = phba->pcidev;
4082         uint16_t max_nr_vfn;
4083         int rc;
4084
4085         max_nr_vfn = lpfc_sli_sriov_nr_virtfn_get(phba);
4086         if (nr_vfn > max_nr_vfn) {
4087                 lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
4088                                 "3057 Requested vfs (%d) greater than "
4089                                 "supported vfs (%d)", nr_vfn, max_nr_vfn);
4090                 return -EINVAL;
4091         }
4092
4093         rc = pci_enable_sriov(pdev, nr_vfn);
4094         if (rc) {
4095                 lpfc_printf_log(phba, KERN_WARNING, LOG_INIT,
4096                                 "2806 Failed to enable sriov on this device "
4097                                 "with vfn number nr_vf:%d, rc:%d\n",
4098                                 nr_vfn, rc);
4099         } else
4100                 lpfc_printf_log(phba, KERN_WARNING, LOG_INIT,
4101                                 "2807 Successful enable sriov on this device "
4102                                 "with vfn number nr_vf:%d\n", nr_vfn);
4103         return rc;
4104 }
4105
4106 /**
4107  * lpfc_sli_driver_resource_setup - Setup driver internal resources for SLI3 dev.
4108  * @phba: pointer to lpfc hba data structure.
4109  *
4110  * This routine is invoked to set up the driver internal resources specific to
4111  * support the SLI-3 HBA device it attached to.
4112  *
4113  * Return codes
4114  *      0 - successful
4115  *      other values - error
4116  **/
4117 static int
4118 lpfc_sli_driver_resource_setup(struct lpfc_hba *phba)
4119 {
4120         struct lpfc_sli *psli;
4121         int rc;
4122
4123         /*
4124          * Initialize timers used by driver
4125          */
4126
4127         /* Heartbeat timer */
4128         init_timer(&phba->hb_tmofunc);
4129         phba->hb_tmofunc.function = lpfc_hb_timeout;
4130         phba->hb_tmofunc.data = (unsigned long)phba;
4131
4132         psli = &phba->sli;
4133         /* MBOX heartbeat timer */
4134         init_timer(&psli->mbox_tmo);
4135         psli->mbox_tmo.function = lpfc_mbox_timeout;
4136         psli->mbox_tmo.data = (unsigned long) phba;
4137         /* FCP polling mode timer */
4138         init_timer(&phba->fcp_poll_timer);
4139         phba->fcp_poll_timer.function = lpfc_poll_timeout;
4140         phba->fcp_poll_timer.data = (unsigned long) phba;
4141         /* Fabric block timer */
4142         init_timer(&phba->fabric_block_timer);
4143         phba->fabric_block_timer.function = lpfc_fabric_block_timeout;
4144         phba->fabric_block_timer.data = (unsigned long) phba;
4145         /* EA polling mode timer */
4146         init_timer(&phba->eratt_poll);
4147         phba->eratt_poll.function = lpfc_poll_eratt;
4148         phba->eratt_poll.data = (unsigned long) phba;
4149
4150         /* Host attention work mask setup */
4151         phba->work_ha_mask = (HA_ERATT | HA_MBATT | HA_LATT);
4152         phba->work_ha_mask |= (HA_RXMASK << (LPFC_ELS_RING * 4));
4153
4154         /* Get all the module params for configuring this host */
4155         lpfc_get_cfgparam(phba);
4156         if (phba->pcidev->device == PCI_DEVICE_ID_HORNET) {
4157                 phba->menlo_flag |= HBA_MENLO_SUPPORT;
4158                 /* check for menlo minimum sg count */
4159                 if (phba->cfg_sg_seg_cnt < LPFC_DEFAULT_MENLO_SG_SEG_CNT)
4160                         phba->cfg_sg_seg_cnt = LPFC_DEFAULT_MENLO_SG_SEG_CNT;
4161         }
4162
4163         /*
4164          * Since the sg_tablesize is module parameter, the sg_dma_buf_size
4165          * used to create the sg_dma_buf_pool must be dynamically calculated.
4166          * 2 segments are added since the IOCB needs a command and response bde.
4167          */
4168         phba->cfg_sg_dma_buf_size = sizeof(struct fcp_cmnd) +
4169                 sizeof(struct fcp_rsp) +
4170                         ((phba->cfg_sg_seg_cnt + 2) * sizeof(struct ulp_bde64));
4171
4172         if (phba->cfg_enable_bg) {
4173                 phba->cfg_sg_seg_cnt = LPFC_MAX_SG_SEG_CNT;
4174                 phba->cfg_sg_dma_buf_size +=
4175                         phba->cfg_prot_sg_seg_cnt * sizeof(struct ulp_bde64);
4176         }
4177
4178         /* Also reinitialize the host templates with new values. */
4179         lpfc_vport_template.sg_tablesize = phba->cfg_sg_seg_cnt;
4180         lpfc_template.sg_tablesize = phba->cfg_sg_seg_cnt;
4181
4182         phba->max_vpi = LPFC_MAX_VPI;
4183         /* This will be set to correct value after config_port mbox */
4184         phba->max_vports = 0;
4185
4186         /*
4187          * Initialize the SLI Layer to run with lpfc HBAs.
4188          */
4189         lpfc_sli_setup(phba);
4190         lpfc_sli_queue_setup(phba);
4191
4192         /* Allocate device driver memory */
4193         if (lpfc_mem_alloc(phba, BPL_ALIGN_SZ))
4194                 return -ENOMEM;
4195
4196         /*
4197          * Enable sr-iov virtual functions if supported and configured
4198          * through the module parameter.
4199          */
4200         if (phba->cfg_sriov_nr_virtfn > 0) {
4201                 rc = lpfc_sli_probe_sriov_nr_virtfn(phba,
4202                                                  phba->cfg_sriov_nr_virtfn);
4203                 if (rc) {
4204                         lpfc_printf_log(phba, KERN_WARNING, LOG_INIT,
4205                                         "2808 Requested number of SR-IOV "
4206                                         "virtual functions (%d) is not "
4207                                         "supported\n",
4208                                         phba->cfg_sriov_nr_virtfn);
4209                         phba->cfg_sriov_nr_virtfn = 0;
4210                 }
4211         }
4212
4213         return 0;
4214 }
4215
4216 /**
4217  * lpfc_sli_driver_resource_unset - Unset drvr internal resources for SLI3 dev
4218  * @phba: pointer to lpfc hba data structure.
4219  *
4220  * This routine is invoked to unset the driver internal resources set up
4221  * specific for supporting the SLI-3 HBA device it attached to.
4222  **/
4223 static void
4224 lpfc_sli_driver_resource_unset(struct lpfc_hba *phba)
4225 {
4226         /* Free device driver memory allocated */
4227         lpfc_mem_free_all(phba);
4228
4229         return;
4230 }
4231
4232 /**
4233  * lpfc_sli4_driver_resource_setup - Setup drvr internal resources for SLI4 dev
4234  * @phba: pointer to lpfc hba data structure.
4235  *
4236  * This routine is invoked to set up the driver internal resources specific to
4237  * support the SLI-4 HBA device it attached to.
4238  *
4239  * Return codes
4240  *      0 - successful
4241  *      other values - error
4242  **/
4243 static int
4244 lpfc_sli4_driver_resource_setup(struct lpfc_hba *phba)
4245 {
4246         struct lpfc_sli *psli;
4247         LPFC_MBOXQ_t *mboxq;
4248         int rc, i, hbq_count, buf_size, dma_buf_size, max_buf_size;
4249         uint8_t pn_page[LPFC_MAX_SUPPORTED_PAGES] = {0};
4250         struct lpfc_mqe *mqe;
4251         int longs, sli_family;
4252
4253         /* Before proceed, wait for POST done and device ready */
4254         rc = lpfc_sli4_post_status_check(phba);
4255         if (rc)
4256                 return -ENODEV;
4257
4258         /*
4259          * Initialize timers used by driver
4260          */
4261
4262         /* Heartbeat timer */
4263         init_timer(&phba->hb_tmofunc);
4264         phba->hb_tmofunc.function = lpfc_hb_timeout;
4265         phba->hb_tmofunc.data = (unsigned long)phba;
4266         init_timer(&phba->rrq_tmr);
4267         phba->rrq_tmr.function = lpfc_rrq_timeout;
4268         phba->rrq_tmr.data = (unsigned long)phba;
4269
4270         psli = &phba->sli;
4271         /* MBOX heartbeat timer */
4272         init_timer(&psli->mbox_tmo);
4273         psli->mbox_tmo.function = lpfc_mbox_timeout;
4274         psli->mbox_tmo.data = (unsigned long) phba;
4275         /* Fabric block timer */
4276         init_timer(&phba->fabric_block_timer);
4277         phba->fabric_block_timer.function = lpfc_fabric_block_timeout;
4278         phba->fabric_block_timer.data = (unsigned long) phba;
4279         /* EA polling mode timer */
4280         init_timer(&phba->eratt_poll);
4281         phba->eratt_poll.function = lpfc_poll_eratt;
4282         phba->eratt_poll.data = (unsigned long) phba;
4283         /* FCF rediscover timer */
4284         init_timer(&phba->fcf.redisc_wait);
4285         phba->fcf.redisc_wait.function = lpfc_sli4_fcf_redisc_wait_tmo;
4286         phba->fcf.redisc_wait.data = (unsigned long)phba;
4287
4288         /*
4289          * Control structure for handling external multi-buffer mailbox
4290          * command pass-through.
4291          */
4292         memset((uint8_t *)&phba->mbox_ext_buf_ctx, 0,
4293                 sizeof(struct lpfc_mbox_ext_buf_ctx));
4294         INIT_LIST_HEAD(&phba->mbox_ext_buf_ctx.ext_dmabuf_list);
4295
4296         /*
4297          * We need to do a READ_CONFIG mailbox command here before
4298          * calling lpfc_get_cfgparam. For VFs this will report the
4299          * MAX_XRI, MAX_VPI, MAX_RPI, MAX_IOCB, and MAX_VFI settings.
4300          * All of the resources allocated
4301          * for this Port are tied to these values.
4302          */
4303         /* Get all the module params for configuring this host */
4304         lpfc_get_cfgparam(phba);
4305         phba->max_vpi = LPFC_MAX_VPI;
4306         /* This will be set to correct value after the read_config mbox */
4307         phba->max_vports = 0;
4308
4309         /* Program the default value of vlan_id and fc_map */
4310         phba->valid_vlan = 0;
4311         phba->fc_map[0] = LPFC_FCOE_FCF_MAP0;
4312         phba->fc_map[1] = LPFC_FCOE_FCF_MAP1;
4313         phba->fc_map[2] = LPFC_FCOE_FCF_MAP2;
4314
4315         /*
4316          * Since the sg_tablesize is module parameter, the sg_dma_buf_size
4317          * used to create the sg_dma_buf_pool must be dynamically calculated.
4318          * 2 segments are added since the IOCB needs a command and response bde.
4319          * To insure that the scsi sgl does not cross a 4k page boundary only
4320          * sgl sizes of must be a power of 2.
4321          */
4322         buf_size = (sizeof(struct fcp_cmnd) + sizeof(struct fcp_rsp) +
4323                     ((phba->cfg_sg_seg_cnt + 2) * sizeof(struct sli4_sge)));
4324
4325         sli_family = bf_get(lpfc_sli_intf_sli_family, &phba->sli4_hba.sli_intf);
4326         max_buf_size = LPFC_SLI4_MAX_BUF_SIZE;
4327         switch (sli_family) {
4328         case LPFC_SLI_INTF_FAMILY_BE2:
4329         case LPFC_SLI_INTF_FAMILY_BE3:
4330                 /* There is a single hint for BE - 2 pages per BPL. */
4331                 if (bf_get(lpfc_sli_intf_sli_hint1, &phba->sli4_hba.sli_intf) ==
4332                     LPFC_SLI_INTF_SLI_HINT1_1)
4333                         max_buf_size = LPFC_SLI4_FL1_MAX_BUF_SIZE;
4334                 break;
4335         case LPFC_SLI_INTF_FAMILY_LNCR_A0:
4336         case LPFC_SLI_INTF_FAMILY_LNCR_B0:
4337         default:
4338                 break;
4339         }
4340         for (dma_buf_size = LPFC_SLI4_MIN_BUF_SIZE;
4341              dma_buf_size < max_buf_size && buf_size > dma_buf_size;
4342              dma_buf_size = dma_buf_size << 1)
4343                 ;
4344         if (dma_buf_size == max_buf_size)
4345                 phba->cfg_sg_seg_cnt = (dma_buf_size -
4346                         sizeof(struct fcp_cmnd) - sizeof(struct fcp_rsp) -
4347                         (2 * sizeof(struct sli4_sge))) /
4348                                 sizeof(struct sli4_sge);
4349         phba->cfg_sg_dma_buf_size = dma_buf_size;
4350
4351         /* Initialize buffer queue management fields */
4352         hbq_count = lpfc_sli_hbq_count();
4353         for (i = 0; i < hbq_count; ++i)
4354                 INIT_LIST_HEAD(&phba->hbqs[i].hbq_buffer_list);
4355         INIT_LIST_HEAD(&phba->rb_pend_list);
4356         phba->hbqs[LPFC_ELS_HBQ].hbq_alloc_buffer = lpfc_sli4_rb_alloc;
4357         phba->hbqs[LPFC_ELS_HBQ].hbq_free_buffer = lpfc_sli4_rb_free;
4358
4359         /*
4360          * Initialize the SLI Layer to run with lpfc SLI4 HBAs.
4361          */
4362         /* Initialize the Abort scsi buffer list used by driver */
4363         spin_lock_init(&phba->sli4_hba.abts_scsi_buf_list_lock);
4364         INIT_LIST_HEAD(&phba->sli4_hba.lpfc_abts_scsi_buf_list);
4365         /* This abort list used by worker thread */
4366         spin_lock_init(&phba->sli4_hba.abts_sgl_list_lock);
4367
4368         /*
4369          * Initialize driver internal slow-path work queues
4370          */
4371
4372         /* Driver internel slow-path CQ Event pool */
4373         INIT_LIST_HEAD(&phba->sli4_hba.sp_cqe_event_pool);
4374         /* Response IOCB work queue list */
4375         INIT_LIST_HEAD(&phba->sli4_hba.sp_queue_event);
4376         /* Asynchronous event CQ Event work queue list */
4377         INIT_LIST_HEAD(&phba->sli4_hba.sp_asynce_work_queue);
4378         /* Fast-path XRI aborted CQ Event work queue list */
4379         INIT_LIST_HEAD(&phba->sli4_hba.sp_fcp_xri_aborted_work_queue);
4380         /* Slow-path XRI aborted CQ Event work queue list */
4381         INIT_LIST_HEAD(&phba->sli4_hba.sp_els_xri_aborted_work_queue);
4382         /* Receive queue CQ Event work queue list */
4383         INIT_LIST_HEAD(&phba->sli4_hba.sp_unsol_work_queue);
4384
4385         /* Initialize extent block lists. */
4386         INIT_LIST_HEAD(&phba->sli4_hba.lpfc_rpi_blk_list);
4387         INIT_LIST_HEAD(&phba->sli4_hba.lpfc_xri_blk_list);
4388         INIT_LIST_HEAD(&phba->sli4_hba.lpfc_vfi_blk_list);
4389         INIT_LIST_HEAD(&phba->lpfc_vpi_blk_list);
4390
4391         /* Initialize the driver internal SLI layer lists. */
4392         lpfc_sli_setup(phba);
4393         lpfc_sli_queue_setup(phba);
4394
4395         /* Allocate device driver memory */
4396         rc = lpfc_mem_alloc(phba, SGL_ALIGN_SZ);
4397         if (rc)
4398                 return -ENOMEM;
4399
4400         /* IF Type 2 ports get initialized now. */
4401         if (bf_get(lpfc_sli_intf_if_type, &phba->sli4_hba.sli_intf) ==
4402             LPFC_SLI_INTF_IF_TYPE_2) {
4403                 rc = lpfc_pci_function_reset(phba);
4404                 if (unlikely(rc))
4405                         return -ENODEV;
4406         }
4407
4408         /* Create the bootstrap mailbox command */
4409         rc = lpfc_create_bootstrap_mbox(phba);
4410         if (unlikely(rc))
4411                 goto out_free_mem;
4412
4413         /* Set up the host's endian order with the device. */
4414         rc = lpfc_setup_endian_order(phba);
4415         if (unlikely(rc))
4416                 goto out_free_bsmbx;
4417
4418         /* Set up the hba's configuration parameters. */
4419         rc = lpfc_sli4_read_config(phba);
4420         if (unlikely(rc))
4421                 goto out_free_bsmbx;
4422
4423         /* IF Type 0 ports get initialized now. */
4424         if (bf_get(lpfc_sli_intf_if_type, &phba->sli4_hba.sli_intf) ==
4425             LPFC_SLI_INTF_IF_TYPE_0) {
4426                 rc = lpfc_pci_function_reset(phba);
4427                 if (unlikely(rc))
4428                         goto out_free_bsmbx;
4429         }
4430
4431         mboxq = (LPFC_MBOXQ_t *) mempool_alloc(phba->mbox_mem_pool,
4432                                                        GFP_KERNEL);
4433         if (!mboxq) {
4434                 rc = -ENOMEM;
4435                 goto out_free_bsmbx;
4436         }
4437
4438         /* Get the Supported Pages if PORT_CAPABILITIES is supported by port. */
4439         lpfc_supported_pages(mboxq);
4440         rc = lpfc_sli_issue_mbox(phba, mboxq, MBX_POLL);
4441         if (!rc) {
4442                 mqe = &mboxq->u.mqe;
4443                 memcpy(&pn_page[0], ((uint8_t *)&mqe->un.supp_pages.word3),
4444                        LPFC_MAX_SUPPORTED_PAGES);
4445                 for (i = 0; i < LPFC_MAX_SUPPORTED_PAGES; i++) {
4446                         switch (pn_page[i]) {
4447                         case LPFC_SLI4_PARAMETERS:
4448                                 phba->sli4_hba.pc_sli4_params.supported = 1;
4449                                 break;
4450                         default:
4451                                 break;
4452                         }
4453                 }
4454                 /* Read the port's SLI4 Parameters capabilities if supported. */
4455                 if (phba->sli4_hba.pc_sli4_params.supported)
4456                         rc = lpfc_pc_sli4_params_get(phba, mboxq);
4457                 if (rc) {
4458                         mempool_free(mboxq, phba->mbox_mem_pool);
4459                         rc = -EIO;
4460                         goto out_free_bsmbx;
4461                 }
4462         }
4463         /*
4464          * Get sli4 parameters that override parameters from Port capabilities.
4465          * If this call fails, it isn't critical unless the SLI4 parameters come
4466          * back in conflict.
4467          */
4468         rc = lpfc_get_sli4_parameters(phba, mboxq);
4469         if (rc) {
4470                 if (phba->sli4_hba.extents_in_use &&
4471                     phba->sli4_hba.rpi_hdrs_in_use) {
4472                         lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
4473                                 "2999 Unsupported SLI4 Parameters "
4474                                 "Extents and RPI headers enabled.\n");
4475                         goto out_free_bsmbx;
4476                 }
4477         }
4478         mempool_free(mboxq, phba->mbox_mem_pool);
4479         /* Create all the SLI4 queues */
4480         rc = lpfc_sli4_queue_create(phba);
4481         if (rc)
4482                 goto out_free_bsmbx;
4483
4484         /* Create driver internal CQE event pool */
4485         rc = lpfc_sli4_cq_event_pool_create(phba);
4486         if (rc)
4487                 goto out_destroy_queue;
4488
4489         /* Initialize and populate the iocb list per host */
4490         rc = lpfc_init_sgl_list(phba);
4491         if (rc) {
4492                 lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
4493                                 "1400 Failed to initialize sgl list.\n");
4494                 goto out_destroy_cq_event_pool;
4495         }
4496         rc = lpfc_init_active_sgl_array(phba);
4497         if (rc) {
4498                 lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
4499                                 "1430 Failed to initialize sgl list.\n");
4500                 goto out_free_sgl_list;
4501         }
4502         rc = lpfc_sli4_init_rpi_hdrs(phba);
4503         if (rc) {
4504                 lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
4505                                 "1432 Failed to initialize rpi headers.\n");
4506                 goto out_free_active_sgl;
4507         }
4508
4509         /* Allocate eligible FCF bmask memory for FCF roundrobin failover */
4510         longs = (LPFC_SLI4_FCF_TBL_INDX_MAX + BITS_PER_LONG - 1)/BITS_PER_LONG;
4511         phba->fcf.fcf_rr_bmask = kzalloc(longs * sizeof(unsigned long),
4512                                          GFP_KERNEL);
4513         if (!phba->fcf.fcf_rr_bmask) {
4514                 lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
4515                                 "2759 Failed allocate memory for FCF round "
4516                                 "robin failover bmask\n");
4517                 rc = -ENOMEM;
4518                 goto out_remove_rpi_hdrs;
4519         }
4520
4521         phba->sli4_hba.fcp_eq_hdl = kzalloc((sizeof(struct lpfc_fcp_eq_hdl) *
4522                                     phba->cfg_fcp_eq_count), GFP_KERNEL);
4523         if (!phba->sli4_hba.fcp_eq_hdl) {
4524                 lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
4525                                 "2572 Failed allocate memory for fast-path "
4526                                 "per-EQ handle array\n");
4527                 rc = -ENOMEM;
4528                 goto out_free_fcf_rr_bmask;
4529         }
4530
4531         phba->sli4_hba.msix_entries = kzalloc((sizeof(struct msix_entry) *
4532                                       phba->sli4_hba.cfg_eqn), GFP_KERNEL);
4533         if (!phba->sli4_hba.msix_entries) {
4534                 lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
4535                                 "2573 Failed allocate memory for msi-x "
4536                                 "interrupt vector entries\n");
4537                 rc = -ENOMEM;
4538                 goto out_free_fcp_eq_hdl;
4539         }
4540
4541         /*
4542          * Enable sr-iov virtual functions if supported and configured
4543          * through the module parameter.
4544          */
4545         if (phba->cfg_sriov_nr_virtfn > 0) {
4546                 rc = lpfc_sli_probe_sriov_nr_virtfn(phba,
4547                                                  phba->cfg_sriov_nr_virtfn);
4548                 if (rc) {
4549                         lpfc_printf_log(phba, KERN_WARNING, LOG_INIT,
4550                                         "3020 Requested number of SR-IOV "
4551                                         "virtual functions (%d) is not "
4552                                         "supported\n",
4553                                         phba->cfg_sriov_nr_virtfn);
4554                         phba->cfg_sriov_nr_virtfn = 0;
4555                 }
4556         }
4557
4558         return 0;
4559
4560 out_free_fcp_eq_hdl:
4561         kfree(phba->sli4_hba.fcp_eq_hdl);
4562 out_free_fcf_rr_bmask:
4563         kfree(phba->fcf.fcf_rr_bmask);
4564 out_remove_rpi_hdrs:
4565         lpfc_sli4_remove_rpi_hdrs(phba);
4566 out_free_active_sgl:
4567         lpfc_free_active_sgl(phba);
4568 out_free_sgl_list:
4569         lpfc_free_sgl_list(phba);
4570 out_destroy_cq_event_pool:
4571         lpfc_sli4_cq_event_pool_destroy(phba);
4572 out_destroy_queue:
4573         lpfc_sli4_queue_destroy(phba);
4574 out_free_bsmbx:
4575         lpfc_destroy_bootstrap_mbox(phba);
4576 out_free_mem:
4577         lpfc_mem_free(phba);
4578         return rc;
4579 }
4580
4581 /**
4582  * lpfc_sli4_driver_resource_unset - Unset drvr internal resources for SLI4 dev
4583  * @phba: pointer to lpfc hba data structure.
4584  *
4585  * This routine is invoked to unset the driver internal resources set up
4586  * specific for supporting the SLI-4 HBA device it attached to.
4587  **/
4588 static void
4589 lpfc_sli4_driver_resource_unset(struct lpfc_hba *phba)
4590 {
4591         struct lpfc_fcf_conn_entry *conn_entry, *next_conn_entry;
4592
4593         /* Free memory allocated for msi-x interrupt vector entries */
4594         kfree(phba->sli4_hba.msix_entries);
4595
4596         /* Free memory allocated for fast-path work queue handles */
4597         kfree(phba->sli4_hba.fcp_eq_hdl);
4598
4599         /* Free the allocated rpi headers. */
4600         lpfc_sli4_remove_rpi_hdrs(phba);
4601         lpfc_sli4_remove_rpis(phba);
4602
4603         /* Free eligible FCF index bmask */
4604         kfree(phba->fcf.fcf_rr_bmask);
4605
4606         /* Free the ELS sgl list */
4607         lpfc_free_active_sgl(phba);
4608         lpfc_free_sgl_list(phba);
4609
4610         /* Free the SCSI sgl management array */
4611         kfree(phba->sli4_hba.lpfc_scsi_psb_array);
4612
4613         /* Free the SLI4 queues */
4614         lpfc_sli4_queue_destroy(phba);
4615
4616         /* Free the completion queue EQ event pool */
4617         lpfc_sli4_cq_event_release_all(phba);
4618         lpfc_sli4_cq_event_pool_destroy(phba);
4619
4620         /* Release resource identifiers. */
4621         lpfc_sli4_dealloc_resource_identifiers(phba);
4622
4623         /* Free the bsmbx region. */
4624         lpfc_destroy_bootstrap_mbox(phba);
4625
4626         /* Free the SLI Layer memory with SLI4 HBAs */
4627         lpfc_mem_free_all(phba);
4628
4629         /* Free the current connect table */
4630         list_for_each_entry_safe(conn_entry, next_conn_entry,
4631                 &phba->fcf_conn_rec_list, list) {
4632                 list_del_init(&conn_entry->list);
4633                 kfree(conn_entry);
4634         }
4635
4636         return;
4637 }
4638
4639 /**
4640  * lpfc_init_api_table_setup - Set up init api function jump table
4641  * @phba: The hba struct for which this call is being executed.
4642  * @dev_grp: The HBA PCI-Device group number.
4643  *
4644  * This routine sets up the device INIT interface API function jump table
4645  * in @phba struct.
4646  *
4647  * Returns: 0 - success, -ENODEV - failure.
4648  **/
4649 int
4650 lpfc_init_api_table_setup(struct lpfc_hba *phba, uint8_t dev_grp)
4651 {
4652         phba->lpfc_hba_init_link = lpfc_hba_init_link;
4653         phba->lpfc_hba_down_link = lpfc_hba_down_link;
4654         phba->lpfc_selective_reset = lpfc_selective_reset;
4655         switch (dev_grp) {
4656         case LPFC_PCI_DEV_LP:
4657                 phba->lpfc_hba_down_post = lpfc_hba_down_post_s3;
4658                 phba->lpfc_handle_eratt = lpfc_handle_eratt_s3;
4659                 phba->lpfc_stop_port = lpfc_stop_port_s3;
4660                 break;
4661         case LPFC_PCI_DEV_OC:
4662                 phba->lpfc_hba_down_post = lpfc_hba_down_post_s4;
4663                 phba->lpfc_handle_eratt = lpfc_handle_eratt_s4;
4664                 phba->lpfc_stop_port = lpfc_stop_port_s4;
4665                 break;
4666         default:
4667                 lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
4668                                 "1431 Invalid HBA PCI-device group: 0x%x\n",
4669                                 dev_grp);
4670                 return -ENODEV;
4671                 break;
4672         }
4673         return 0;
4674 }
4675
4676 /**
4677  * lpfc_setup_driver_resource_phase1 - Phase1 etup driver internal resources.
4678  * @phba: pointer to lpfc hba data structure.
4679  *
4680  * This routine is invoked to set up the driver internal resources before the
4681  * device specific resource setup to support the HBA device it attached to.
4682  *
4683  * Return codes
4684  *      0 - successful
4685  *      other values - error
4686  **/
4687 static int
4688 lpfc_setup_driver_resource_phase1(struct lpfc_hba *phba)
4689 {
4690         /*
4691          * Driver resources common to all SLI revisions
4692          */
4693         atomic_set(&phba->fast_event_count, 0);
4694         spin_lock_init(&phba->hbalock);
4695
4696         /* Initialize ndlp management spinlock */
4697         spin_lock_init(&phba->ndlp_lock);
4698
4699         INIT_LIST_HEAD(&phba->port_list);
4700         INIT_LIST_HEAD(&phba->work_list);
4701         init_waitqueue_head(&phba->wait_4_mlo_m_q);
4702
4703         /* Initialize the wait queue head for the kernel thread */
4704         init_waitqueue_head(&phba->work_waitq);
4705
4706         /* Initialize the scsi buffer list used by driver for scsi IO */
4707         spin_lock_init(&phba->scsi_buf_list_lock);
4708         INIT_LIST_HEAD(&phba->lpfc_scsi_buf_list);
4709
4710         /* Initialize the fabric iocb list */
4711         INIT_LIST_HEAD(&phba->fabric_iocb_list);
4712
4713         /* Initialize list to save ELS buffers */
4714         INIT_LIST_HEAD(&phba->elsbuf);
4715
4716         /* Initialize FCF connection rec list */
4717         INIT_LIST_HEAD(&phba->fcf_conn_rec_list);
4718
4719         return 0;
4720 }
4721
4722 /**
4723  * lpfc_setup_driver_resource_phase2 - Phase2 setup driver internal resources.
4724  * @phba: pointer to lpfc hba data structure.
4725  *
4726  * This routine is invoked to set up the driver internal resources after the
4727  * device specific resource setup to support the HBA device it attached to.
4728  *
4729  * Return codes
4730  *      0 - successful
4731  *      other values - error
4732  **/
4733 static int
4734 lpfc_setup_driver_resource_phase2(struct lpfc_hba *phba)
4735 {
4736         int error;
4737
4738         /* Startup the kernel thread for this host adapter. */
4739         phba->worker_thread = kthread_run(lpfc_do_work, phba,
4740                                           "lpfc_worker_%d", phba->brd_no);
4741         if (IS_ERR(phba->worker_thread)) {
4742                 error = PTR_ERR(phba->worker_thread);
4743                 return error;
4744         }
4745
4746         return 0;
4747 }
4748
4749 /**
4750  * lpfc_unset_driver_resource_phase2 - Phase2 unset driver internal resources.
4751  * @phba: pointer to lpfc hba data structure.
4752  *
4753  * This routine is invoked to unset the driver internal resources set up after
4754  * the device specific resource setup for supporting the HBA device it
4755  * attached to.
4756  **/
4757 static void
4758 lpfc_unset_driver_resource_phase2(struct lpfc_hba *phba)
4759 {
4760         /* Stop kernel worker thread */
4761         kthread_stop(phba->worker_thread);
4762 }
4763
4764 /**
4765  * lpfc_free_iocb_list - Free iocb list.
4766  * @phba: pointer to lpfc hba data structure.
4767  *
4768  * This routine is invoked to free the driver's IOCB list and memory.
4769  **/
4770 static void
4771 lpfc_free_iocb_list(struct lpfc_hba *phba)
4772 {
4773         struct lpfc_iocbq *iocbq_entry = NULL, *iocbq_next = NULL;
4774
4775         spin_lock_irq(&phba->hbalock);
4776         list_for_each_entry_safe(iocbq_entry, iocbq_next,
4777                                  &phba->lpfc_iocb_list, list) {
4778                 list_del(&iocbq_entry->list);
4779                 kfree(iocbq_entry);
4780                 phba->total_iocbq_bufs--;
4781         }
4782         spin_unlock_irq(&phba->hbalock);
4783
4784         return;
4785 }
4786
4787 /**
4788  * lpfc_init_iocb_list - Allocate and initialize iocb list.
4789  * @phba: pointer to lpfc hba data structure.
4790  *
4791  * This routine is invoked to allocate and initizlize the driver's IOCB
4792  * list and set up the IOCB tag array accordingly.
4793  *
4794  * Return codes
4795  *      0 - successful
4796  *      other values - error
4797  **/
4798 static int
4799 lpfc_init_iocb_list(struct lpfc_hba *phba, int iocb_count)
4800 {
4801         struct lpfc_iocbq *iocbq_entry = NULL;
4802         uint16_t iotag;
4803         int i;
4804
4805         /* Initialize and populate the iocb list per host.  */
4806         INIT_LIST_HEAD(&phba->lpfc_iocb_list);
4807         for (i = 0; i < iocb_count; i++) {
4808                 iocbq_entry = kzalloc(sizeof(struct lpfc_iocbq), GFP_KERNEL);
4809                 if (iocbq_entry == NULL) {
4810                         printk(KERN_ERR "%s: only allocated %d iocbs of "
4811                                 "expected %d count. Unloading driver.\n",
4812                                 __func__, i, LPFC_IOCB_LIST_CNT);
4813                         goto out_free_iocbq;
4814                 }
4815
4816                 iotag = lpfc_sli_next_iotag(phba, iocbq_entry);
4817                 if (iotag == 0) {
4818                         kfree(iocbq_entry);
4819                         printk(KERN_ERR "%s: failed to allocate IOTAG. "
4820                                 "Unloading driver.\n", __func__);
4821                         goto out_free_iocbq;
4822                 }
4823                 iocbq_entry->sli4_lxritag = NO_XRI;
4824                 iocbq_entry->sli4_xritag = NO_XRI;
4825
4826                 spin_lock_irq(&phba->hbalock);
4827                 list_add(&iocbq_entry->list, &phba->lpfc_iocb_list);
4828                 phba->total_iocbq_bufs++;
4829                 spin_unlock_irq(&phba->hbalock);
4830         }
4831
4832         return 0;
4833
4834 out_free_iocbq:
4835         lpfc_free_iocb_list(phba);
4836
4837         return -ENOMEM;
4838 }
4839
4840 /**
4841  * lpfc_free_sgl_list - Free sgl list.
4842  * @phba: pointer to lpfc hba data structure.
4843  *
4844  * This routine is invoked to free the driver's sgl list and memory.
4845  **/
4846 static void
4847 lpfc_free_sgl_list(struct lpfc_hba *phba)
4848 {
4849         struct lpfc_sglq *sglq_entry = NULL, *sglq_next = NULL;
4850         LIST_HEAD(sglq_list);
4851
4852         spin_lock_irq(&phba->hbalock);
4853         list_splice_init(&phba->sli4_hba.lpfc_sgl_list, &sglq_list);
4854         spin_unlock_irq(&phba->hbalock);
4855
4856         list_for_each_entry_safe(sglq_entry, sglq_next,
4857                                  &sglq_list, list) {
4858                 list_del(&sglq_entry->list);
4859                 lpfc_mbuf_free(phba, sglq_entry->virt, sglq_entry->phys);
4860                 kfree(sglq_entry);
4861                 phba->sli4_hba.total_sglq_bufs--;
4862         }
4863         kfree(phba->sli4_hba.lpfc_els_sgl_array);
4864 }
4865
4866 /**
4867  * lpfc_init_active_sgl_array - Allocate the buf to track active ELS XRIs.
4868  * @phba: pointer to lpfc hba data structure.
4869  *
4870  * This routine is invoked to allocate the driver's active sgl memory.
4871  * This array will hold the sglq_entry's for active IOs.
4872  **/
4873 static int
4874 lpfc_init_active_sgl_array(struct lpfc_hba *phba)
4875 {
4876         int size;
4877         size = sizeof(struct lpfc_sglq *);
4878         size *= phba->sli4_hba.max_cfg_param.max_xri;
4879
4880         phba->sli4_hba.lpfc_sglq_active_list =
4881                 kzalloc(size, GFP_KERNEL);
4882         if (!phba->sli4_hba.lpfc_sglq_active_list)
4883                 return -ENOMEM;
4884         return 0;
4885 }
4886
4887 /**
4888  * lpfc_free_active_sgl - Free the buf that tracks active ELS XRIs.
4889  * @phba: pointer to lpfc hba data structure.
4890  *
4891  * This routine is invoked to walk through the array of active sglq entries
4892  * and free all of the resources.
4893  * This is just a place holder for now.
4894  **/
4895 static void
4896 lpfc_free_active_sgl(struct lpfc_hba *phba)
4897 {
4898         kfree(phba->sli4_hba.lpfc_sglq_active_list);
4899 }
4900
4901 /**
4902  * lpfc_init_sgl_list - Allocate and initialize sgl list.
4903  * @phba: pointer to lpfc hba data structure.
4904  *
4905  * This routine is invoked to allocate and initizlize the driver's sgl
4906  * list and set up the sgl xritag tag array accordingly.
4907  *
4908  * Return codes
4909  *      0 - successful
4910  *      other values - error
4911  **/
4912 static int
4913 lpfc_init_sgl_list(struct lpfc_hba *phba)
4914 {
4915         struct lpfc_sglq *sglq_entry = NULL;
4916         int i;
4917         int els_xri_cnt;
4918
4919         els_xri_cnt = lpfc_sli4_get_els_iocb_cnt(phba);
4920         lpfc_printf_log(phba, KERN_INFO, LOG_SLI,
4921                                 "2400 ELS XRI count %d.\n",
4922                                 els_xri_cnt);
4923         /* Initialize and populate the sglq list per host/VF. */
4924         INIT_LIST_HEAD(&phba->sli4_hba.lpfc_sgl_list);
4925         INIT_LIST_HEAD(&phba->sli4_hba.lpfc_abts_els_sgl_list);
4926
4927         /* Sanity check on XRI management */
4928         if (phba->sli4_hba.max_cfg_param.max_xri <= els_xri_cnt) {
4929                 lpfc_printf_log(phba, KERN_ERR, LOG_SLI,
4930                                 "2562 No room left for SCSI XRI allocation: "
4931                                 "max_xri=%d, els_xri=%d\n",
4932                                 phba->sli4_hba.max_cfg_param.max_xri,
4933                                 els_xri_cnt);
4934                 return -ENOMEM;
4935         }
4936
4937         /* Allocate memory for the ELS XRI management array */
4938         phba->sli4_hba.lpfc_els_sgl_array =
4939                         kzalloc((sizeof(struct lpfc_sglq *) * els_xri_cnt),
4940                         GFP_KERNEL);
4941
4942         if (!phba->sli4_hba.lpfc_els_sgl_array) {
4943                 lpfc_printf_log(phba, KERN_ERR, LOG_SLI,
4944                                 "2401 Failed to allocate memory for ELS "
4945                                 "XRI management array of size %d.\n",
4946                                 els_xri_cnt);
4947                 return -ENOMEM;
4948         }
4949
4950         /* Keep the SCSI XRI into the XRI management array */
4951         phba->sli4_hba.scsi_xri_max =
4952                         phba->sli4_hba.max_cfg_param.max_xri - els_xri_cnt;
4953         phba->sli4_hba.scsi_xri_cnt = 0;
4954         phba->sli4_hba.lpfc_scsi_psb_array =
4955                         kzalloc((sizeof(struct lpfc_scsi_buf *) *
4956                         phba->sli4_hba.scsi_xri_max), GFP_KERNEL);
4957
4958         if (!phba->sli4_hba.lpfc_scsi_psb_array) {
4959                 lpfc_printf_log(phba, KERN_ERR, LOG_SLI,
4960                                 "2563 Failed to allocate memory for SCSI "
4961                                 "XRI management array of size %d.\n",
4962                                 phba->sli4_hba.scsi_xri_max);
4963                 kfree(phba->sli4_hba.lpfc_els_sgl_array);
4964                 return -ENOMEM;
4965         }
4966
4967         for (i = 0; i < els_xri_cnt; i++) {
4968                 sglq_entry = kzalloc(sizeof(struct lpfc_sglq), GFP_KERNEL);
4969                 if (sglq_entry == NULL) {
4970                         printk(KERN_ERR "%s: only allocated %d sgls of "
4971                                 "expected %d count. Unloading driver.\n",
4972                                 __func__, i, els_xri_cnt);
4973                         goto out_free_mem;
4974                 }
4975
4976                 sglq_entry->buff_type = GEN_BUFF_TYPE;
4977                 sglq_entry->virt = lpfc_mbuf_alloc(phba, 0, &sglq_entry->phys);
4978                 if (sglq_entry->virt == NULL) {
4979                         kfree(sglq_entry);
4980                         printk(KERN_ERR "%s: failed to allocate mbuf.\n"
4981                                 "Unloading driver.\n", __func__);
4982                         goto out_free_mem;
4983                 }
4984                 sglq_entry->sgl = sglq_entry->virt;
4985                 memset(sglq_entry->sgl, 0, LPFC_BPL_SIZE);
4986
4987                 /* The list order is used by later block SGL registraton */
4988                 spin_lock_irq(&phba->hbalock);
4989                 sglq_entry->state = SGL_FREED;
4990                 list_add_tail(&sglq_entry->list, &phba->sli4_hba.lpfc_sgl_list);
4991                 phba->sli4_hba.lpfc_els_sgl_array[i] = sglq_entry;
4992                 phba->sli4_hba.total_sglq_bufs++;
4993                 spin_unlock_irq(&phba->hbalock);
4994         }
4995         return 0;
4996
4997 out_free_mem:
4998         kfree(phba->sli4_hba.lpfc_scsi_psb_array);
4999         lpfc_free_sgl_list(phba);
5000         return -ENOMEM;
5001 }
5002
5003 /**
5004  * lpfc_sli4_init_rpi_hdrs - Post the rpi header memory region to the port
5005  * @phba: pointer to lpfc hba data structure.
5006  *
5007  * This routine is invoked to post rpi header templates to the
5008  * port for those SLI4 ports that do not support extents.  This routine
5009  * posts a PAGE_SIZE memory region to the port to hold up to
5010  * PAGE_SIZE modulo 64 rpi context headers.  This is an initialization routine
5011  * and should be called only when interrupts are disabled.
5012  *
5013  * Return codes
5014  *      0 - successful
5015  *      -ERROR - otherwise.
5016  **/
5017 int
5018 lpfc_sli4_init_rpi_hdrs(struct lpfc_hba *phba)
5019 {
5020         int rc = 0;
5021         struct lpfc_rpi_hdr *rpi_hdr;
5022
5023         INIT_LIST_HEAD(&phba->sli4_hba.lpfc_rpi_hdr_list);
5024         /*
5025          * If the SLI4 port supports extents, posting the rpi header isn't
5026          * required.  Set the expected maximum count and let the actual value
5027          * get set when extents are fully allocated.
5028          */
5029         if (!phba->sli4_hba.rpi_hdrs_in_use) {
5030                 phba->sli4_hba.next_rpi = phba->sli4_hba.max_cfg_param.max_rpi;
5031                 return rc;
5032         }
5033         if (phba->sli4_hba.extents_in_use)
5034                 return -EIO;
5035
5036         rpi_hdr = lpfc_sli4_create_rpi_hdr(phba);
5037         if (!rpi_hdr) {
5038                 lpfc_printf_log(phba, KERN_ERR, LOG_MBOX | LOG_SLI,
5039                                 "0391 Error during rpi post operation\n");
5040                 lpfc_sli4_remove_rpis(phba);
5041                 rc = -ENODEV;
5042         }
5043
5044         return rc;
5045 }
5046
5047 /**
5048  * lpfc_sli4_create_rpi_hdr - Allocate an rpi header memory region
5049  * @phba: pointer to lpfc hba data structure.
5050  *
5051  * This routine is invoked to allocate a single 4KB memory region to
5052  * support rpis and stores them in the phba.  This single region
5053  * provides support for up to 64 rpis.  The region is used globally
5054  * by the device.
5055  *
5056  * Returns:
5057  *   A valid rpi hdr on success.
5058  *   A NULL pointer on any failure.
5059  **/
5060 struct lpfc_rpi_hdr *
5061 lpfc_sli4_create_rpi_hdr(struct lpfc_hba *phba)
5062 {
5063         uint16_t rpi_limit, curr_rpi_range;
5064         struct lpfc_dmabuf *dmabuf;
5065         struct lpfc_rpi_hdr *rpi_hdr;
5066         uint32_t rpi_count;
5067
5068         /*
5069          * If the SLI4 port supports extents, posting the rpi header isn't
5070          * required.  Set the expected maximum count and let the actual value
5071          * get set when extents are fully allocated.
5072          */
5073         if (!phba->sli4_hba.rpi_hdrs_in_use)
5074                 return NULL;
5075         if (phba->sli4_hba.extents_in_use)
5076                 return NULL;
5077
5078         /* The limit on the logical index is just the max_rpi count. */
5079         rpi_limit = phba->sli4_hba.max_cfg_param.rpi_base +
5080         phba->sli4_hba.max_cfg_param.max_rpi - 1;
5081
5082         spin_lock_irq(&phba->hbalock);
5083         /*
5084          * Establish the starting RPI in this header block.  The starting
5085          * rpi is normalized to a zero base because the physical rpi is
5086          * port based.
5087          */
5088         curr_rpi_range = phba->sli4_hba.next_rpi -
5089                 phba->sli4_hba.max_cfg_param.rpi_base;
5090         spin_unlock_irq(&phba->hbalock);
5091
5092         /*
5093          * The port has a limited number of rpis. The increment here
5094          * is LPFC_RPI_HDR_COUNT - 1 to account for the starting value
5095          * and to allow the full max_rpi range per port.
5096          */
5097         if ((curr_rpi_range + (LPFC_RPI_HDR_COUNT - 1)) > rpi_limit)
5098                 rpi_count = rpi_limit - curr_rpi_range;
5099         else
5100                 rpi_count = LPFC_RPI_HDR_COUNT;
5101
5102         if (!rpi_count)
5103                 return NULL;
5104         /*
5105          * First allocate the protocol header region for the port.  The
5106          * port expects a 4KB DMA-mapped memory region that is 4K aligned.
5107          */
5108         dmabuf = kzalloc(sizeof(struct lpfc_dmabuf), GFP_KERNEL);
5109         if (!dmabuf)
5110                 return NULL;
5111
5112         dmabuf->virt = dma_alloc_coherent(&phba->pcidev->dev,
5113                                           LPFC_HDR_TEMPLATE_SIZE,
5114                                           &dmabuf->phys,
5115                                           GFP_KERNEL);
5116         if (!dmabuf->virt) {
5117                 rpi_hdr = NULL;
5118                 goto err_free_dmabuf;
5119         }
5120
5121         memset(dmabuf->virt, 0, LPFC_HDR_TEMPLATE_SIZE);
5122         if (!IS_ALIGNED(dmabuf->phys, LPFC_HDR_TEMPLATE_SIZE)) {
5123                 rpi_hdr = NULL;
5124                 goto err_free_coherent;
5125         }
5126
5127         /* Save the rpi header data for cleanup later. */
5128         rpi_hdr = kzalloc(sizeof(struct lpfc_rpi_hdr), GFP_KERNEL);
5129         if (!rpi_hdr)
5130                 goto err_free_coherent;
5131
5132         rpi_hdr->dmabuf = dmabuf;
5133         rpi_hdr->len = LPFC_HDR_TEMPLATE_SIZE;
5134         rpi_hdr->page_count = 1;
5135         spin_lock_irq(&phba->hbalock);
5136
5137         /* The rpi_hdr stores the logical index only. */
5138         rpi_hdr->start_rpi = curr_rpi_range;
5139         list_add_tail(&rpi_hdr->list, &phba->sli4_hba.lpfc_rpi_hdr_list);
5140
5141         /*
5142          * The next_rpi stores the next logical module-64 rpi value used
5143          * to post physical rpis in subsequent rpi postings.
5144          */
5145         phba->sli4_hba.next_rpi += rpi_count;
5146         spin_unlock_irq(&phba->hbalock);
5147         return rpi_hdr;
5148
5149  err_free_coherent:
5150         dma_free_coherent(&phba->pcidev->dev, LPFC_HDR_TEMPLATE_SIZE,
5151                           dmabuf->virt, dmabuf->phys);
5152  err_free_dmabuf:
5153         kfree(dmabuf);
5154         return NULL;
5155 }
5156
5157 /**
5158  * lpfc_sli4_remove_rpi_hdrs - Remove all rpi header memory regions
5159  * @phba: pointer to lpfc hba data structure.
5160  *
5161  * This routine is invoked to remove all memory resources allocated
5162  * to support rpis for SLI4 ports not supporting extents. This routine
5163  * presumes the caller has released all rpis consumed by fabric or port
5164  * logins and is prepared to have the header pages removed.
5165  **/
5166 void
5167 lpfc_sli4_remove_rpi_hdrs(struct lpfc_hba *phba)
5168 {
5169         struct lpfc_rpi_hdr *rpi_hdr, *next_rpi_hdr;
5170
5171         if (!phba->sli4_hba.rpi_hdrs_in_use)
5172                 goto exit;
5173
5174         list_for_each_entry_safe(rpi_hdr, next_rpi_hdr,
5175                                  &phba->sli4_hba.lpfc_rpi_hdr_list, list) {
5176                 list_del(&rpi_hdr->list);
5177                 dma_free_coherent(&phba->pcidev->dev, rpi_hdr->len,
5178                                   rpi_hdr->dmabuf->virt, rpi_hdr->dmabuf->phys);
5179                 kfree(rpi_hdr->dmabuf);
5180                 kfree(rpi_hdr);
5181         }
5182  exit:
5183         /* There are no rpis available to the port now. */
5184         phba->sli4_hba.next_rpi = 0;
5185 }
5186
5187 /**
5188  * lpfc_hba_alloc - Allocate driver hba data structure for a device.
5189  * @pdev: pointer to pci device data structure.
5190  *
5191  * This routine is invoked to allocate the driver hba data structure for an
5192  * HBA device. If the allocation is successful, the phba reference to the
5193  * PCI device data structure is set.
5194  *
5195  * Return codes
5196  *      pointer to @phba - successful
5197  *      NULL - error
5198  **/
5199 static struct lpfc_hba *
5200 lpfc_hba_alloc(struct pci_dev *pdev)
5201 {
5202         struct lpfc_hba *phba;
5203
5204         /* Allocate memory for HBA structure */
5205         phba = kzalloc(sizeof(struct lpfc_hba), GFP_KERNEL);
5206         if (!phba) {
5207                 dev_err(&pdev->dev, "failed to allocate hba struct\n");
5208                 return NULL;
5209         }
5210
5211         /* Set reference to PCI device in HBA structure */
5212         phba->pcidev = pdev;
5213
5214         /* Assign an unused board number */
5215         phba->brd_no = lpfc_get_instance();
5216         if (phba->brd_no < 0) {
5217                 kfree(phba);
5218                 return NULL;
5219         }
5220
5221         spin_lock_init(&phba->ct_ev_lock);
5222         INIT_LIST_HEAD(&phba->ct_ev_waiters);
5223
5224         return phba;
5225 }
5226
5227 /**
5228  * lpfc_hba_free - Free driver hba data structure with a device.
5229  * @phba: pointer to lpfc hba data structure.
5230  *
5231  * This routine is invoked to free the driver hba data structure with an
5232  * HBA device.
5233  **/
5234 static void
5235 lpfc_hba_free(struct lpfc_hba *phba)
5236 {
5237         /* Release the driver assigned board number */
5238         idr_remove(&lpfc_hba_index, phba->brd_no);
5239
5240         kfree(phba);
5241         return;
5242 }
5243
5244 /**
5245  * lpfc_create_shost - Create hba physical port with associated scsi host.
5246  * @phba: pointer to lpfc hba data structure.
5247  *
5248  * This routine is invoked to create HBA physical port and associate a SCSI
5249  * host with it.
5250  *
5251  * Return codes
5252  *      0 - successful
5253  *      other values - error
5254  **/
5255 static int
5256 lpfc_create_shost(struct lpfc_hba *phba)
5257 {
5258         struct lpfc_vport *vport;
5259         struct Scsi_Host  *shost;
5260
5261         /* Initialize HBA FC structure */
5262         phba->fc_edtov = FF_DEF_EDTOV;
5263         phba->fc_ratov = FF_DEF_RATOV;
5264         phba->fc_altov = FF_DEF_ALTOV;
5265         phba->fc_arbtov = FF_DEF_ARBTOV;
5266
5267         atomic_set(&phba->sdev_cnt, 0);
5268         vport = lpfc_create_port(phba, phba->brd_no, &phba->pcidev->dev);
5269         if (!vport)
5270                 return -ENODEV;
5271
5272         shost = lpfc_shost_from_vport(vport);
5273         phba->pport = vport;
5274         lpfc_debugfs_initialize(vport);
5275         /* Put reference to SCSI host to driver's device private data */
5276         pci_set_drvdata(phba->pcidev, shost);
5277
5278         return 0;
5279 }
5280
5281 /**
5282  * lpfc_destroy_shost - Destroy hba physical port with associated scsi host.
5283  * @phba: pointer to lpfc hba data structure.
5284  *
5285  * This routine is invoked to destroy HBA physical port and the associated
5286  * SCSI host.
5287  **/
5288 static void
5289 lpfc_destroy_shost(struct lpfc_hba *phba)
5290 {
5291         struct lpfc_vport *vport = phba->pport;
5292
5293         /* Destroy physical port that associated with the SCSI host */
5294         destroy_port(vport);
5295
5296         return;
5297 }
5298
5299 /**
5300  * lpfc_setup_bg - Setup Block guard structures and debug areas.
5301  * @phba: pointer to lpfc hba data structure.
5302  * @shost: the shost to be used to detect Block guard settings.
5303  *
5304  * This routine sets up the local Block guard protocol settings for @shost.
5305  * This routine also allocates memory for debugging bg buffers.
5306  **/
5307 static void
5308 lpfc_setup_bg(struct lpfc_hba *phba, struct Scsi_Host *shost)
5309 {
5310         int pagecnt = 10;
5311         if (lpfc_prot_mask && lpfc_prot_guard) {
5312                 lpfc_printf_log(phba, KERN_INFO, LOG_INIT,
5313                                 "1478 Registering BlockGuard with the "
5314                                 "SCSI layer\n");
5315                 scsi_host_set_prot(shost, lpfc_prot_mask);
5316                 scsi_host_set_guard(shost, lpfc_prot_guard);
5317         }
5318         if (!_dump_buf_data) {
5319                 while (pagecnt) {
5320                         spin_lock_init(&_dump_buf_lock);
5321                         _dump_buf_data =
5322                                 (char *) __get_free_pages(GFP_KERNEL, pagecnt);
5323                         if (_dump_buf_data) {
5324                                 lpfc_printf_log(phba, KERN_ERR, LOG_BG,
5325                                         "9043 BLKGRD: allocated %d pages for "
5326                                        "_dump_buf_data at 0x%p\n",
5327                                        (1 << pagecnt), _dump_buf_data);
5328                                 _dump_buf_data_order = pagecnt;
5329                                 memset(_dump_buf_data, 0,
5330                                        ((1 << PAGE_SHIFT) << pagecnt));
5331                                 break;
5332                         } else
5333                                 --pagecnt;
5334                 }
5335                 if (!_dump_buf_data_order)
5336                         lpfc_printf_log(phba, KERN_ERR, LOG_BG,
5337                                 "9044 BLKGRD: ERROR unable to allocate "
5338                                "memory for hexdump\n");
5339         } else
5340                 lpfc_printf_log(phba, KERN_ERR, LOG_BG,
5341                         "9045 BLKGRD: already allocated _dump_buf_data=0x%p"
5342                        "\n", _dump_buf_data);
5343         if (!_dump_buf_dif) {
5344                 while (pagecnt) {
5345                         _dump_buf_dif =
5346                                 (char *) __get_free_pages(GFP_KERNEL, pagecnt);
5347                         if (_dump_buf_dif) {
5348                                 lpfc_printf_log(phba, KERN_ERR, LOG_BG,
5349                                         "9046 BLKGRD: allocated %d pages for "
5350                                        "_dump_buf_dif at 0x%p\n",
5351                                        (1 << pagecnt), _dump_buf_dif);
5352                                 _dump_buf_dif_order = pagecnt;
5353                                 memset(_dump_buf_dif, 0,
5354                                        ((1 << PAGE_SHIFT) << pagecnt));
5355                                 break;
5356                         } else
5357                                 --pagecnt;
5358                 }
5359                 if (!_dump_buf_dif_order)
5360                         lpfc_printf_log(phba, KERN_ERR, LOG_BG,
5361                         "9047 BLKGRD: ERROR unable to allocate "
5362                                "memory for hexdump\n");
5363         } else
5364                 lpfc_printf_log(phba, KERN_ERR, LOG_BG,
5365                         "9048 BLKGRD: already allocated _dump_buf_dif=0x%p\n",
5366                        _dump_buf_dif);
5367 }
5368
5369 /**
5370  * lpfc_post_init_setup - Perform necessary device post initialization setup.
5371  * @phba: pointer to lpfc hba data structure.
5372  *
5373  * This routine is invoked to perform all the necessary post initialization
5374  * setup for the device.
5375  **/
5376 static void
5377 lpfc_post_init_setup(struct lpfc_hba *phba)
5378 {
5379         struct Scsi_Host  *shost;
5380         struct lpfc_adapter_event_header adapter_event;
5381
5382         /* Get the default values for Model Name and Description */
5383         lpfc_get_hba_model_desc(phba, phba->ModelName, phba->ModelDesc);
5384
5385         /*
5386          * hba setup may have changed the hba_queue_depth so we need to
5387          * adjust the value of can_queue.
5388          */
5389         shost = pci_get_drvdata(phba->pcidev);
5390         shost->can_queue = phba->cfg_hba_queue_depth - 10;
5391         if (phba->sli3_options & LPFC_SLI3_BG_ENABLED)
5392                 lpfc_setup_bg(phba, shost);
5393
5394         lpfc_host_attrib_init(shost);
5395
5396         if (phba->cfg_poll & DISABLE_FCP_RING_INT) {
5397                 spin_lock_irq(shost->host_lock);
5398                 lpfc_poll_start_timer(phba);
5399                 spin_unlock_irq(shost->host_lock);
5400         }
5401
5402         lpfc_printf_log(phba, KERN_INFO, LOG_INIT,
5403                         "0428 Perform SCSI scan\n");
5404         /* Send board arrival event to upper layer */
5405         adapter_event.event_type = FC_REG_ADAPTER_EVENT;
5406         adapter_event.subcategory = LPFC_EVENT_ARRIVAL;
5407         fc_host_post_vendor_event(shost, fc_get_event_number(),
5408                                   sizeof(adapter_event),
5409                                   (char *) &adapter_event,
5410                                   LPFC_NL_VENDOR_ID);
5411         return;
5412 }
5413
5414 /**
5415  * lpfc_sli_pci_mem_setup - Setup SLI3 HBA PCI memory space.
5416  * @phba: pointer to lpfc hba data structure.
5417  *
5418  * This routine is invoked to set up the PCI device memory space for device
5419  * with SLI-3 interface spec.
5420  *
5421  * Return codes
5422  *      0 - successful
5423  *      other values - error
5424  **/
5425 static int
5426 lpfc_sli_pci_mem_setup(struct lpfc_hba *phba)
5427 {
5428         struct pci_dev *pdev;
5429         unsigned long bar0map_len, bar2map_len;
5430         int i, hbq_count;
5431         void *ptr;
5432         int error = -ENODEV;
5433
5434         /* Obtain PCI device reference */
5435         if (!phba->pcidev)
5436                 return error;
5437         else
5438                 pdev = phba->pcidev;
5439
5440         /* Set the device DMA mask size */
5441         if (pci_set_dma_mask(pdev, DMA_BIT_MASK(64)) != 0
5442          || pci_set_consistent_dma_mask(pdev,DMA_BIT_MASK(64)) != 0) {
5443                 if (pci_set_dma_mask(pdev, DMA_BIT_MASK(32)) != 0
5444                  || pci_set_consistent_dma_mask(pdev,DMA_BIT_MASK(32)) != 0) {
5445                         return error;
5446                 }
5447         }
5448
5449         /* Get the bus address of Bar0 and Bar2 and the number of bytes
5450          * required by each mapping.
5451          */
5452         phba->pci_bar0_map = pci_resource_start(pdev, 0);
5453         bar0map_len = pci_resource_len(pdev, 0);
5454
5455         phba->pci_bar2_map = pci_resource_start(pdev, 2);
5456         bar2map_len = pci_resource_len(pdev, 2);
5457
5458         /* Map HBA SLIM to a kernel virtual address. */
5459         phba->slim_memmap_p = ioremap(phba->pci_bar0_map, bar0map_len);
5460         if (!phba->slim_memmap_p) {
5461                 dev_printk(KERN_ERR, &pdev->dev,
5462                            "ioremap failed for SLIM memory.\n");
5463                 goto out;
5464         }
5465
5466         /* Map HBA Control Registers to a kernel virtual address. */
5467         phba->ctrl_regs_memmap_p = ioremap(phba->pci_bar2_map, bar2map_len);
5468         if (!phba->ctrl_regs_memmap_p) {
5469                 dev_printk(KERN_ERR, &pdev->dev,
5470                            "ioremap failed for HBA control registers.\n");
5471                 goto out_iounmap_slim;
5472         }
5473
5474         /* Allocate memory for SLI-2 structures */
5475         phba->slim2p.virt = dma_alloc_coherent(&pdev->dev,
5476                                                SLI2_SLIM_SIZE,
5477                                                &phba->slim2p.phys,
5478                                                GFP_KERNEL);
5479         if (!phba->slim2p.virt)
5480                 goto out_iounmap;
5481
5482         memset(phba->slim2p.virt, 0, SLI2_SLIM_SIZE);
5483         phba->mbox = phba->slim2p.virt + offsetof(struct lpfc_sli2_slim, mbx);
5484         phba->mbox_ext = (phba->slim2p.virt +
5485                 offsetof(struct lpfc_sli2_slim, mbx_ext_words));
5486         phba->pcb = (phba->slim2p.virt + offsetof(struct lpfc_sli2_slim, pcb));
5487         phba->IOCBs = (phba->slim2p.virt +
5488                        offsetof(struct lpfc_sli2_slim, IOCBs));
5489
5490         phba->hbqslimp.virt = dma_alloc_coherent(&pdev->dev,
5491                                                  lpfc_sli_hbq_size(),
5492                                                  &phba->hbqslimp.phys,
5493                                                  GFP_KERNEL);
5494         if (!phba->hbqslimp.virt)
5495                 goto out_free_slim;
5496
5497         hbq_count = lpfc_sli_hbq_count();
5498         ptr = phba->hbqslimp.virt;
5499         for (i = 0; i < hbq_count; ++i) {
5500                 phba->hbqs[i].hbq_virt = ptr;
5501                 INIT_LIST_HEAD(&phba->hbqs[i].hbq_buffer_list);
5502                 ptr += (lpfc_hbq_defs[i]->entry_count *
5503                         sizeof(struct lpfc_hbq_entry));
5504         }
5505         phba->hbqs[LPFC_ELS_HBQ].hbq_alloc_buffer = lpfc_els_hbq_alloc;
5506         phba->hbqs[LPFC_ELS_HBQ].hbq_free_buffer = lpfc_els_hbq_free;
5507
5508         memset(phba->hbqslimp.virt, 0, lpfc_sli_hbq_size());
5509
5510         INIT_LIST_HEAD(&phba->rb_pend_list);
5511
5512         phba->MBslimaddr = phba->slim_memmap_p;
5513         phba->HAregaddr = phba->ctrl_regs_memmap_p + HA_REG_OFFSET;
5514         phba->CAregaddr = phba->ctrl_regs_memmap_p + CA_REG_OFFSET;
5515         phba->HSregaddr = phba->ctrl_regs_memmap_p + HS_REG_OFFSET;
5516         phba->HCregaddr = phba->ctrl_regs_memmap_p + HC_REG_OFFSET;
5517
5518         return 0;
5519
5520 out_free_slim:
5521         dma_free_coherent(&pdev->dev, SLI2_SLIM_SIZE,
5522                           phba->slim2p.virt, phba->slim2p.phys);
5523 out_iounmap:
5524         iounmap(phba->ctrl_regs_memmap_p);
5525 out_iounmap_slim:
5526         iounmap(phba->slim_memmap_p);
5527 out:
5528         return error;
5529 }
5530
5531 /**
5532  * lpfc_sli_pci_mem_unset - Unset SLI3 HBA PCI memory space.
5533  * @phba: pointer to lpfc hba data structure.
5534  *
5535  * This routine is invoked to unset the PCI device memory space for device
5536  * with SLI-3 interface spec.
5537  **/
5538 static void
5539 lpfc_sli_pci_mem_unset(struct lpfc_hba *phba)
5540 {
5541         struct pci_dev *pdev;
5542
5543         /* Obtain PCI device reference */
5544         if (!phba->pcidev)
5545                 return;
5546         else
5547                 pdev = phba->pcidev;
5548
5549         /* Free coherent DMA memory allocated */
5550         dma_free_coherent(&pdev->dev, lpfc_sli_hbq_size(),
5551                           phba->hbqslimp.virt, phba->hbqslimp.phys);
5552         dma_free_coherent(&pdev->dev, SLI2_SLIM_SIZE,
5553                           phba->slim2p.virt, phba->slim2p.phys);
5554
5555         /* I/O memory unmap */
5556         iounmap(phba->ctrl_regs_memmap_p);
5557         iounmap(phba->slim_memmap_p);
5558
5559         return;
5560 }
5561
5562 /**
5563  * lpfc_sli4_post_status_check - Wait for SLI4 POST done and check status
5564  * @phba: pointer to lpfc hba data structure.
5565  *
5566  * This routine is invoked to wait for SLI4 device Power On Self Test (POST)
5567  * done and check status.
5568  *
5569  * Return 0 if successful, otherwise -ENODEV.
5570  **/
5571 int
5572 lpfc_sli4_post_status_check(struct lpfc_hba *phba)
5573 {
5574         struct lpfc_register portsmphr_reg, uerrlo_reg, uerrhi_reg;
5575         struct lpfc_register reg_data;
5576         int i, port_error = 0;
5577         uint32_t if_type;
5578
5579         memset(&portsmphr_reg, 0, sizeof(portsmphr_reg));
5580         memset(&reg_data, 0, sizeof(reg_data));
5581         if (!phba->sli4_hba.PSMPHRregaddr)
5582                 return -ENODEV;
5583
5584         /* Wait up to 30 seconds for the SLI Port POST done and ready */
5585         for (i = 0; i < 3000; i++) {
5586                 if (lpfc_readl(phba->sli4_hba.PSMPHRregaddr,
5587                         &portsmphr_reg.word0) ||
5588                         (bf_get(lpfc_port_smphr_perr, &portsmphr_reg))) {
5589                         /* Port has a fatal POST error, break out */
5590                         port_error = -ENODEV;
5591                         break;
5592                 }
5593                 if (LPFC_POST_STAGE_PORT_READY ==
5594                     bf_get(lpfc_port_smphr_port_status, &portsmphr_reg))
5595                         break;
5596                 msleep(10);
5597         }
5598
5599         /*
5600          * If there was a port error during POST, then don't proceed with
5601          * other register reads as the data may not be valid.  Just exit.
5602          */
5603         if (port_error) {
5604                 lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
5605                         "1408 Port Failed POST - portsmphr=0x%x, "
5606                         "perr=x%x, sfi=x%x, nip=x%x, ipc=x%x, scr1=x%x, "
5607                         "scr2=x%x, hscratch=x%x, pstatus=x%x\n",
5608                         portsmphr_reg.word0,
5609                         bf_get(lpfc_port_smphr_perr, &portsmphr_reg),
5610                         bf_get(lpfc_port_smphr_sfi, &portsmphr_reg),
5611                         bf_get(lpfc_port_smphr_nip, &portsmphr_reg),
5612                         bf_get(lpfc_port_smphr_ipc, &portsmphr_reg),
5613                         bf_get(lpfc_port_smphr_scr1, &portsmphr_reg),
5614                         bf_get(lpfc_port_smphr_scr2, &portsmphr_reg),
5615                         bf_get(lpfc_port_smphr_host_scratch, &portsmphr_reg),
5616                         bf_get(lpfc_port_smphr_port_status, &portsmphr_reg));
5617         } else {
5618                 lpfc_printf_log(phba, KERN_INFO, LOG_INIT,
5619                                 "2534 Device Info: SLIFamily=0x%x, "
5620                                 "SLIRev=0x%x, IFType=0x%x, SLIHint_1=0x%x, "
5621                                 "SLIHint_2=0x%x, FT=0x%x\n",
5622                                 bf_get(lpfc_sli_intf_sli_family,
5623                                        &phba->sli4_hba.sli_intf),
5624                                 bf_get(lpfc_sli_intf_slirev,
5625                                        &phba->sli4_hba.sli_intf),
5626                                 bf_get(lpfc_sli_intf_if_type,
5627                                        &phba->sli4_hba.sli_intf),
5628                                 bf_get(lpfc_sli_intf_sli_hint1,
5629                                        &phba->sli4_hba.sli_intf),
5630                                 bf_get(lpfc_sli_intf_sli_hint2,
5631                                        &phba->sli4_hba.sli_intf),
5632                                 bf_get(lpfc_sli_intf_func_type,
5633                                        &phba->sli4_hba.sli_intf));
5634                 /*
5635                  * Check for other Port errors during the initialization
5636                  * process.  Fail the load if the port did not come up
5637                  * correctly.
5638                  */
5639                 if_type = bf_get(lpfc_sli_intf_if_type,
5640                                  &phba->sli4_hba.sli_intf);
5641                 switch (if_type) {
5642                 case LPFC_SLI_INTF_IF_TYPE_0:
5643                         phba->sli4_hba.ue_mask_lo =
5644                               readl(phba->sli4_hba.u.if_type0.UEMASKLOregaddr);
5645                         phba->sli4_hba.ue_mask_hi =
5646                               readl(phba->sli4_hba.u.if_type0.UEMASKHIregaddr);
5647                         uerrlo_reg.word0 =
5648                               readl(phba->sli4_hba.u.if_type0.UERRLOregaddr);
5649                         uerrhi_reg.word0 =
5650                                 readl(phba->sli4_hba.u.if_type0.UERRHIregaddr);
5651                         if ((~phba->sli4_hba.ue_mask_lo & uerrlo_reg.word0) ||
5652                             (~phba->sli4_hba.ue_mask_hi & uerrhi_reg.word0)) {
5653                                 lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
5654                                                 "1422 Unrecoverable Error "
5655                                                 "Detected during POST "
5656                                                 "uerr_lo_reg=0x%x, "
5657                                                 "uerr_hi_reg=0x%x, "
5658                                                 "ue_mask_lo_reg=0x%x, "
5659                                                 "ue_mask_hi_reg=0x%x\n",
5660                                                 uerrlo_reg.word0,
5661                                                 uerrhi_reg.word0,
5662                                                 phba->sli4_hba.ue_mask_lo,
5663                                                 phba->sli4_hba.ue_mask_hi);
5664                                 port_error = -ENODEV;
5665                         }
5666                         break;
5667                 case LPFC_SLI_INTF_IF_TYPE_2:
5668                         /* Final checks.  The port status should be clean. */
5669                         if (lpfc_readl(phba->sli4_hba.u.if_type2.STATUSregaddr,
5670                                 &reg_data.word0) ||
5671                                 (bf_get(lpfc_sliport_status_err, &reg_data) &&
5672                                  !bf_get(lpfc_sliport_status_rn, &reg_data))) {
5673                                 phba->work_status[0] =
5674                                         readl(phba->sli4_hba.u.if_type2.
5675                                               ERR1regaddr);
5676                                 phba->work_status[1] =
5677                                         readl(phba->sli4_hba.u.if_type2.
5678                                               ERR2regaddr);
5679                                 lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
5680                                         "2888 Port Error Detected "
5681                                         "during POST: "
5682                                         "port status reg 0x%x, "
5683                                         "port_smphr reg 0x%x, "
5684                                         "error 1=0x%x, error 2=0x%x\n",
5685                                         reg_data.word0,
5686                                         portsmphr_reg.word0,
5687                                         phba->work_status[0],
5688                                         phba->work_status[1]);
5689                                 port_error = -ENODEV;
5690                         }
5691                         break;
5692                 case LPFC_SLI_INTF_IF_TYPE_1:
5693                 default:
5694                         break;
5695                 }
5696         }
5697         return port_error;
5698 }
5699
5700 /**
5701  * lpfc_sli4_bar0_register_memmap - Set up SLI4 BAR0 register memory map.
5702  * @phba: pointer to lpfc hba data structure.
5703  * @if_type:  The SLI4 interface type getting configured.
5704  *
5705  * This routine is invoked to set up SLI4 BAR0 PCI config space register
5706  * memory map.
5707  **/
5708 static void
5709 lpfc_sli4_bar0_register_memmap(struct lpfc_hba *phba, uint32_t if_type)
5710 {
5711         switch (if_type) {
5712         case LPFC_SLI_INTF_IF_TYPE_0:
5713                 phba->sli4_hba.u.if_type0.UERRLOregaddr =
5714                         phba->sli4_hba.conf_regs_memmap_p + LPFC_UERR_STATUS_LO;
5715                 phba->sli4_hba.u.if_type0.UERRHIregaddr =
5716                         phba->sli4_hba.conf_regs_memmap_p + LPFC_UERR_STATUS_HI;
5717                 phba->sli4_hba.u.if_type0.UEMASKLOregaddr =
5718                         phba->sli4_hba.conf_regs_memmap_p + LPFC_UE_MASK_LO;
5719                 phba->sli4_hba.u.if_type0.UEMASKHIregaddr =
5720                         phba->sli4_hba.conf_regs_memmap_p + LPFC_UE_MASK_HI;
5721                 phba->sli4_hba.SLIINTFregaddr =
5722                         phba->sli4_hba.conf_regs_memmap_p + LPFC_SLI_INTF;
5723                 break;
5724         case LPFC_SLI_INTF_IF_TYPE_2:
5725                 phba->sli4_hba.u.if_type2.ERR1regaddr =
5726                         phba->sli4_hba.conf_regs_memmap_p +
5727                                                 LPFC_CTL_PORT_ER1_OFFSET;
5728                 phba->sli4_hba.u.if_type2.ERR2regaddr =
5729                         phba->sli4_hba.conf_regs_memmap_p +
5730                                                 LPFC_CTL_PORT_ER2_OFFSET;
5731                 phba->sli4_hba.u.if_type2.CTRLregaddr =
5732                         phba->sli4_hba.conf_regs_memmap_p +
5733                                                 LPFC_CTL_PORT_CTL_OFFSET;
5734                 phba->sli4_hba.u.if_type2.STATUSregaddr =
5735                         phba->sli4_hba.conf_regs_memmap_p +
5736                                                 LPFC_CTL_PORT_STA_OFFSET;
5737                 phba->sli4_hba.SLIINTFregaddr =
5738                         phba->sli4_hba.conf_regs_memmap_p + LPFC_SLI_INTF;
5739                 phba->sli4_hba.PSMPHRregaddr =
5740                         phba->sli4_hba.conf_regs_memmap_p +
5741                                                 LPFC_CTL_PORT_SEM_OFFSET;
5742                 phba->sli4_hba.RQDBregaddr =
5743                         phba->sli4_hba.conf_regs_memmap_p + LPFC_RQ_DOORBELL;
5744                 phba->sli4_hba.WQDBregaddr =
5745                         phba->sli4_hba.conf_regs_memmap_p + LPFC_WQ_DOORBELL;
5746                 phba->sli4_hba.EQCQDBregaddr =
5747                         phba->sli4_hba.conf_regs_memmap_p + LPFC_EQCQ_DOORBELL;
5748                 phba->sli4_hba.MQDBregaddr =
5749                         phba->sli4_hba.conf_regs_memmap_p + LPFC_MQ_DOORBELL;
5750                 phba->sli4_hba.BMBXregaddr =
5751                         phba->sli4_hba.conf_regs_memmap_p + LPFC_BMBX;
5752                 break;
5753         case LPFC_SLI_INTF_IF_TYPE_1:
5754         default:
5755                 dev_printk(KERN_ERR, &phba->pcidev->dev,
5756                            "FATAL - unsupported SLI4 interface type - %d\n",
5757                            if_type);
5758                 break;
5759         }
5760 }
5761
5762 /**
5763  * lpfc_sli4_bar1_register_memmap - Set up SLI4 BAR1 register memory map.
5764  * @phba: pointer to lpfc hba data structure.
5765  *
5766  * This routine is invoked to set up SLI4 BAR1 control status register (CSR)
5767  * memory map.
5768  **/
5769 static void
5770 lpfc_sli4_bar1_register_memmap(struct lpfc_hba *phba)
5771 {
5772         phba->sli4_hba.PSMPHRregaddr = phba->sli4_hba.ctrl_regs_memmap_p +
5773                 LPFC_SLIPORT_IF0_SMPHR;
5774         phba->sli4_hba.ISRregaddr = phba->sli4_hba.ctrl_regs_memmap_p +
5775                 LPFC_HST_ISR0;
5776         phba->sli4_hba.IMRregaddr = phba->sli4_hba.ctrl_regs_memmap_p +
5777                 LPFC_HST_IMR0;
5778         phba->sli4_hba.ISCRregaddr = phba->sli4_hba.ctrl_regs_memmap_p +
5779                 LPFC_HST_ISCR0;
5780 }
5781
5782 /**
5783  * lpfc_sli4_bar2_register_memmap - Set up SLI4 BAR2 register memory map.
5784  * @phba: pointer to lpfc hba data structure.
5785  * @vf: virtual function number
5786  *
5787  * This routine is invoked to set up SLI4 BAR2 doorbell register memory map
5788  * based on the given viftual function number, @vf.
5789  *
5790  * Return 0 if successful, otherwise -ENODEV.
5791  **/
5792 static int
5793 lpfc_sli4_bar2_register_memmap(struct lpfc_hba *phba, uint32_t vf)
5794 {
5795         if (vf > LPFC_VIR_FUNC_MAX)
5796                 return -ENODEV;
5797
5798         phba->sli4_hba.RQDBregaddr = (phba->sli4_hba.drbl_regs_memmap_p +
5799                                 vf * LPFC_VFR_PAGE_SIZE + LPFC_RQ_DOORBELL);
5800         phba->sli4_hba.WQDBregaddr = (phba->sli4_hba.drbl_regs_memmap_p +
5801                                 vf * LPFC_VFR_PAGE_SIZE + LPFC_WQ_DOORBELL);
5802         phba->sli4_hba.EQCQDBregaddr = (phba->sli4_hba.drbl_regs_memmap_p +
5803                                 vf * LPFC_VFR_PAGE_SIZE + LPFC_EQCQ_DOORBELL);
5804         phba->sli4_hba.MQDBregaddr = (phba->sli4_hba.drbl_regs_memmap_p +
5805                                 vf * LPFC_VFR_PAGE_SIZE + LPFC_MQ_DOORBELL);
5806         phba->sli4_hba.BMBXregaddr = (phba->sli4_hba.drbl_regs_memmap_p +
5807                                 vf * LPFC_VFR_PAGE_SIZE + LPFC_BMBX);
5808         return 0;
5809 }
5810
5811 /**
5812  * lpfc_create_bootstrap_mbox - Create the bootstrap mailbox
5813  * @phba: pointer to lpfc hba data structure.
5814  *
5815  * This routine is invoked to create the bootstrap mailbox
5816  * region consistent with the SLI-4 interface spec.  This
5817  * routine allocates all memory necessary to communicate
5818  * mailbox commands to the port and sets up all alignment
5819  * needs.  No locks are expected to be held when calling
5820  * this routine.
5821  *
5822  * Return codes
5823  *      0 - successful
5824  *      -ENOMEM - could not allocated memory.
5825  **/
5826 static int
5827 lpfc_create_bootstrap_mbox(struct lpfc_hba *phba)
5828 {
5829         uint32_t bmbx_size;
5830         struct lpfc_dmabuf *dmabuf;
5831         struct dma_address *dma_address;
5832         uint32_t pa_addr;
5833         uint64_t phys_addr;
5834
5835         dmabuf = kzalloc(sizeof(struct lpfc_dmabuf), GFP_KERNEL);
5836         if (!dmabuf)
5837                 return -ENOMEM;
5838
5839         /*
5840          * The bootstrap mailbox region is comprised of 2 parts
5841          * plus an alignment restriction of 16 bytes.
5842          */
5843         bmbx_size = sizeof(struct lpfc_bmbx_create) + (LPFC_ALIGN_16_BYTE - 1);
5844         dmabuf->virt = dma_alloc_coherent(&phba->pcidev->dev,
5845                                           bmbx_size,
5846                                           &dmabuf->phys,
5847                                           GFP_KERNEL);
5848         if (!dmabuf->virt) {
5849                 kfree(dmabuf);
5850                 return -ENOMEM;
5851         }
5852         memset(dmabuf->virt, 0, bmbx_size);
5853
5854         /*
5855          * Initialize the bootstrap mailbox pointers now so that the register
5856          * operations are simple later.  The mailbox dma address is required
5857          * to be 16-byte aligned.  Also align the virtual memory as each
5858          * maibox is copied into the bmbx mailbox region before issuing the
5859          * command to the port.
5860          */
5861         phba->sli4_hba.bmbx.dmabuf = dmabuf;
5862         phba->sli4_hba.bmbx.bmbx_size = bmbx_size;
5863
5864         phba->sli4_hba.bmbx.avirt = PTR_ALIGN(dmabuf->virt,
5865                                               LPFC_ALIGN_16_BYTE);
5866         phba->sli4_hba.bmbx.aphys = ALIGN(dmabuf->phys,
5867                                               LPFC_ALIGN_16_BYTE);
5868
5869         /*
5870          * Set the high and low physical addresses now.  The SLI4 alignment
5871          * requirement is 16 bytes and the mailbox is posted to the port
5872          * as two 30-bit addresses.  The other data is a bit marking whether
5873          * the 30-bit address is the high or low address.
5874          * Upcast bmbx aphys to 64bits so shift instruction compiles
5875          * clean on 32 bit machines.
5876          */
5877         dma_address = &phba->sli4_hba.bmbx.dma_address;
5878         phys_addr = (uint64_t)phba->sli4_hba.bmbx.aphys;
5879         pa_addr = (uint32_t) ((phys_addr >> 34) & 0x3fffffff);
5880         dma_address->addr_hi = (uint32_t) ((pa_addr << 2) |
5881                                            LPFC_BMBX_BIT1_ADDR_HI);
5882
5883         pa_addr = (uint32_t) ((phba->sli4_hba.bmbx.aphys >> 4) & 0x3fffffff);
5884         dma_address->addr_lo = (uint32_t) ((pa_addr << 2) |
5885                                            LPFC_BMBX_BIT1_ADDR_LO);
5886         return 0;
5887 }
5888
5889 /**
5890  * lpfc_destroy_bootstrap_mbox - Destroy all bootstrap mailbox resources
5891  * @phba: pointer to lpfc hba data structure.
5892  *
5893  * This routine is invoked to teardown the bootstrap mailbox
5894  * region and release all host resources. This routine requires
5895  * the caller to ensure all mailbox commands recovered, no
5896  * additional mailbox comands are sent, and interrupts are disabled
5897  * before calling this routine.
5898  *
5899  **/
5900 static void
5901 lpfc_destroy_bootstrap_mbox(struct lpfc_hba *phba)
5902 {
5903         dma_free_coherent(&phba->pcidev->dev,
5904                           phba->sli4_hba.bmbx.bmbx_size,
5905                           phba->sli4_hba.bmbx.dmabuf->virt,
5906                           phba->sli4_hba.bmbx.dmabuf->phys);
5907
5908         kfree(phba->sli4_hba.bmbx.dmabuf);
5909         memset(&phba->sli4_hba.bmbx, 0, sizeof(struct lpfc_bmbx));
5910 }
5911
5912 /**
5913  * lpfc_sli4_read_config - Get the config parameters.
5914  * @phba: pointer to lpfc hba data structure.
5915  *
5916  * This routine is invoked to read the configuration parameters from the HBA.
5917  * The configuration parameters are used to set the base and maximum values
5918  * for RPI's XRI's VPI's VFI's and FCFIs. These values also affect the resource
5919  * allocation for the port.
5920  *
5921  * Return codes
5922  *      0 - successful
5923  *      -ENOMEM - No available memory
5924  *      -EIO - The mailbox failed to complete successfully.
5925  **/
5926 static int
5927 lpfc_sli4_read_config(struct lpfc_hba *phba)
5928 {
5929         LPFC_MBOXQ_t *pmb;
5930         struct lpfc_mbx_read_config *rd_config;
5931         union  lpfc_sli4_cfg_shdr *shdr;
5932         uint32_t shdr_status, shdr_add_status;
5933         struct lpfc_mbx_get_func_cfg *get_func_cfg;
5934         struct lpfc_rsrc_desc_fcfcoe *desc;
5935         uint32_t desc_count;
5936         int length, i, rc = 0;
5937
5938         pmb = (LPFC_MBOXQ_t *) mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
5939         if (!pmb) {
5940                 lpfc_printf_log(phba, KERN_ERR, LOG_SLI,
5941                                 "2011 Unable to allocate memory for issuing "
5942                                 "SLI_CONFIG_SPECIAL mailbox command\n");
5943                 return -ENOMEM;
5944         }
5945
5946         lpfc_read_config(phba, pmb);
5947
5948         rc = lpfc_sli_issue_mbox(phba, pmb, MBX_POLL);
5949         if (rc != MBX_SUCCESS) {
5950                 lpfc_printf_log(phba, KERN_ERR, LOG_SLI,
5951                         "2012 Mailbox failed , mbxCmd x%x "
5952                         "READ_CONFIG, mbxStatus x%x\n",
5953                         bf_get(lpfc_mqe_command, &pmb->u.mqe),
5954                         bf_get(lpfc_mqe_status, &pmb->u.mqe));
5955                 rc = -EIO;
5956         } else {
5957                 rd_config = &pmb->u.mqe.un.rd_config;
5958                 phba->sli4_hba.extents_in_use =
5959                         bf_get(lpfc_mbx_rd_conf_extnts_inuse, rd_config);
5960                 phba->sli4_hba.max_cfg_param.max_xri =
5961                         bf_get(lpfc_mbx_rd_conf_xri_count, rd_config);
5962                 phba->sli4_hba.max_cfg_param.xri_base =
5963                         bf_get(lpfc_mbx_rd_conf_xri_base, rd_config);
5964                 phba->sli4_hba.max_cfg_param.max_vpi =
5965                         bf_get(lpfc_mbx_rd_conf_vpi_count, rd_config);
5966                 phba->sli4_hba.max_cfg_param.vpi_base =
5967                         bf_get(lpfc_mbx_rd_conf_vpi_base, rd_config);
5968                 phba->sli4_hba.max_cfg_param.max_rpi =
5969                         bf_get(lpfc_mbx_rd_conf_rpi_count, rd_config);
5970                 phba->sli4_hba.max_cfg_param.rpi_base =
5971                         bf_get(lpfc_mbx_rd_conf_rpi_base, rd_config);
5972                 phba->sli4_hba.max_cfg_param.max_vfi =
5973                         bf_get(lpfc_mbx_rd_conf_vfi_count, rd_config);
5974                 phba->sli4_hba.max_cfg_param.vfi_base =
5975                         bf_get(lpfc_mbx_rd_conf_vfi_base, rd_config);
5976                 phba->sli4_hba.max_cfg_param.max_fcfi =
5977                         bf_get(lpfc_mbx_rd_conf_fcfi_count, rd_config);
5978                 phba->sli4_hba.max_cfg_param.max_eq =
5979                         bf_get(lpfc_mbx_rd_conf_eq_count, rd_config);
5980                 phba->sli4_hba.max_cfg_param.max_rq =
5981                         bf_get(lpfc_mbx_rd_conf_rq_count, rd_config);
5982                 phba->sli4_hba.max_cfg_param.max_wq =
5983                         bf_get(lpfc_mbx_rd_conf_wq_count, rd_config);
5984                 phba->sli4_hba.max_cfg_param.max_cq =
5985                         bf_get(lpfc_mbx_rd_conf_cq_count, rd_config);
5986                 phba->lmt = bf_get(lpfc_mbx_rd_conf_lmt, rd_config);
5987                 phba->sli4_hba.next_xri = phba->sli4_hba.max_cfg_param.xri_base;
5988                 phba->vpi_base = phba->sli4_hba.max_cfg_param.vpi_base;
5989                 phba->vfi_base = phba->sli4_hba.max_cfg_param.vfi_base;
5990                 phba->sli4_hba.next_rpi = phba->sli4_hba.max_cfg_param.rpi_base;
5991                 phba->max_vpi = (phba->sli4_hba.max_cfg_param.max_vpi > 0) ?
5992                                 (phba->sli4_hba.max_cfg_param.max_vpi - 1) : 0;
5993                 phba->max_vports = phba->max_vpi;
5994                 lpfc_printf_log(phba, KERN_INFO, LOG_SLI,
5995                                 "2003 cfg params Extents? %d "
5996                                 "XRI(B:%d M:%d), "
5997                                 "VPI(B:%d M:%d) "
5998                                 "VFI(B:%d M:%d) "
5999                                 "RPI(B:%d M:%d) "
6000                                 "FCFI(Count:%d)\n",
6001                                 phba->sli4_hba.extents_in_use,
6002                                 phba->sli4_hba.max_cfg_param.xri_base,
6003                                 phba->sli4_hba.max_cfg_param.max_xri,
6004                                 phba->sli4_hba.max_cfg_param.vpi_base,
6005                                 phba->sli4_hba.max_cfg_param.max_vpi,
6006                                 phba->sli4_hba.max_cfg_param.vfi_base,
6007                                 phba->sli4_hba.max_cfg_param.max_vfi,
6008                                 phba->sli4_hba.max_cfg_param.rpi_base,
6009                                 phba->sli4_hba.max_cfg_param.max_rpi,
6010                                 phba->sli4_hba.max_cfg_param.max_fcfi);
6011         }
6012
6013         if (rc)
6014                 goto read_cfg_out;
6015
6016         /* Reset the DFT_HBA_Q_DEPTH to the max xri  */
6017         if (phba->cfg_hba_queue_depth >
6018                 (phba->sli4_hba.max_cfg_param.max_xri -
6019                         lpfc_sli4_get_els_iocb_cnt(phba)))
6020                 phba->cfg_hba_queue_depth =
6021                         phba->sli4_hba.max_cfg_param.max_xri -
6022                                 lpfc_sli4_get_els_iocb_cnt(phba);
6023
6024         if (bf_get(lpfc_sli_intf_if_type, &phba->sli4_hba.sli_intf) !=
6025             LPFC_SLI_INTF_IF_TYPE_2)
6026                 goto read_cfg_out;
6027
6028         /* get the pf# and vf# for SLI4 if_type 2 port */
6029         length = (sizeof(struct lpfc_mbx_get_func_cfg) -
6030                   sizeof(struct lpfc_sli4_cfg_mhdr));
6031         lpfc_sli4_config(phba, pmb, LPFC_MBOX_SUBSYSTEM_COMMON,
6032                          LPFC_MBOX_OPCODE_GET_FUNCTION_CONFIG,
6033                          length, LPFC_SLI4_MBX_EMBED);
6034
6035         rc = lpfc_sli_issue_mbox(phba, pmb, MBX_POLL);
6036         shdr = (union lpfc_sli4_cfg_shdr *)
6037                                 &pmb->u.mqe.un.sli4_config.header.cfg_shdr;
6038         shdr_status = bf_get(lpfc_mbox_hdr_status, &shdr->response);
6039         shdr_add_status = bf_get(lpfc_mbox_hdr_add_status, &shdr->response);
6040         if (rc || shdr_status || shdr_add_status) {
6041                 lpfc_printf_log(phba, KERN_ERR, LOG_SLI,
6042                                 "3026 Mailbox failed , mbxCmd x%x "
6043                                 "GET_FUNCTION_CONFIG, mbxStatus x%x\n",
6044                                 bf_get(lpfc_mqe_command, &pmb->u.mqe),
6045                                 bf_get(lpfc_mqe_status, &pmb->u.mqe));
6046                 rc = -EIO;
6047                 goto read_cfg_out;
6048         }
6049
6050         /* search for fc_fcoe resrouce descriptor */
6051         get_func_cfg = &pmb->u.mqe.un.get_func_cfg;
6052         desc_count = get_func_cfg->func_cfg.rsrc_desc_count;
6053
6054         for (i = 0; i < LPFC_RSRC_DESC_MAX_NUM; i++) {
6055                 desc = (struct lpfc_rsrc_desc_fcfcoe *)
6056                         &get_func_cfg->func_cfg.desc[i];
6057                 if (LPFC_RSRC_DESC_TYPE_FCFCOE ==
6058                     bf_get(lpfc_rsrc_desc_pcie_type, desc)) {
6059                         phba->sli4_hba.iov.pf_number =
6060                                 bf_get(lpfc_rsrc_desc_fcfcoe_pfnum, desc);
6061                         phba->sli4_hba.iov.vf_number =
6062                                 bf_get(lpfc_rsrc_desc_fcfcoe_vfnum, desc);
6063                         break;
6064                 }
6065         }
6066
6067         if (i < LPFC_RSRC_DESC_MAX_NUM)
6068                 lpfc_printf_log(phba, KERN_INFO, LOG_SLI,
6069                                 "3027 GET_FUNCTION_CONFIG: pf_number:%d, "
6070                                 "vf_number:%d\n", phba->sli4_hba.iov.pf_number,
6071                                 phba->sli4_hba.iov.vf_number);
6072         else {
6073                 lpfc_printf_log(phba, KERN_ERR, LOG_SLI,
6074                                 "3028 GET_FUNCTION_CONFIG: failed to find "
6075                                 "Resrouce Descriptor:x%x\n",
6076                                 LPFC_RSRC_DESC_TYPE_FCFCOE);
6077                 rc = -EIO;
6078         }
6079
6080 read_cfg_out:
6081         mempool_free(pmb, phba->mbox_mem_pool);
6082         return rc;
6083 }
6084
6085 /**
6086  * lpfc_setup_endian_order - Write endian order to an SLI4 if_type 0 port.
6087  * @phba: pointer to lpfc hba data structure.
6088  *
6089  * This routine is invoked to setup the port-side endian order when
6090  * the port if_type is 0.  This routine has no function for other
6091  * if_types.
6092  *
6093  * Return codes
6094  *      0 - successful
6095  *      -ENOMEM - No available memory
6096  *      -EIO - The mailbox failed to complete successfully.
6097  **/
6098 static int
6099 lpfc_setup_endian_order(struct lpfc_hba *phba)
6100 {
6101         LPFC_MBOXQ_t *mboxq;
6102         uint32_t if_type, rc = 0;
6103         uint32_t endian_mb_data[2] = {HOST_ENDIAN_LOW_WORD0,
6104                                       HOST_ENDIAN_HIGH_WORD1};
6105
6106         if_type = bf_get(lpfc_sli_intf_if_type, &phba->sli4_hba.sli_intf);
6107         switch (if_type) {
6108         case LPFC_SLI_INTF_IF_TYPE_0:
6109                 mboxq = (LPFC_MBOXQ_t *) mempool_alloc(phba->mbox_mem_pool,
6110                                                        GFP_KERNEL);
6111                 if (!mboxq) {
6112                         lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
6113                                         "0492 Unable to allocate memory for "
6114                                         "issuing SLI_CONFIG_SPECIAL mailbox "
6115                                         "command\n");
6116                         return -ENOMEM;
6117                 }
6118
6119                 /*
6120                  * The SLI4_CONFIG_SPECIAL mailbox command requires the first
6121                  * two words to contain special data values and no other data.
6122                  */
6123                 memset(mboxq, 0, sizeof(LPFC_MBOXQ_t));
6124                 memcpy(&mboxq->u.mqe, &endian_mb_data, sizeof(endian_mb_data));
6125                 rc = lpfc_sli_issue_mbox(phba, mboxq, MBX_POLL);
6126                 if (rc != MBX_SUCCESS) {
6127                         lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
6128                                         "0493 SLI_CONFIG_SPECIAL mailbox "
6129                                         "failed with status x%x\n",
6130                                         rc);
6131                         rc = -EIO;
6132                 }
6133                 mempool_free(mboxq, phba->mbox_mem_pool);
6134                 break;
6135         case LPFC_SLI_INTF_IF_TYPE_2:
6136         case LPFC_SLI_INTF_IF_TYPE_1:
6137         default:
6138                 break;
6139         }
6140         return rc;
6141 }
6142
6143 /**
6144  * lpfc_sli4_queue_create - Create all the SLI4 queues
6145  * @phba: pointer to lpfc hba data structure.
6146  *
6147  * This routine is invoked to allocate all the SLI4 queues for the FCoE HBA
6148  * operation. For each SLI4 queue type, the parameters such as queue entry
6149  * count (queue depth) shall be taken from the module parameter. For now,
6150  * we just use some constant number as place holder.
6151  *
6152  * Return codes
6153  *      0 - successful
6154  *      -ENOMEM - No available memory
6155  *      -EIO - The mailbox failed to complete successfully.
6156  **/
6157 static int
6158 lpfc_sli4_queue_create(struct lpfc_hba *phba)
6159 {
6160         struct lpfc_queue *qdesc;
6161         int fcp_eqidx, fcp_cqidx, fcp_wqidx;
6162         int cfg_fcp_wq_count;
6163         int cfg_fcp_eq_count;
6164
6165         /*
6166          * Sanity check for confiugred queue parameters against the run-time
6167          * device parameters
6168          */
6169
6170         /* Sanity check on FCP fast-path WQ parameters */
6171         cfg_fcp_wq_count = phba->cfg_fcp_wq_count;
6172         if (cfg_fcp_wq_count >
6173             (phba->sli4_hba.max_cfg_param.max_wq - LPFC_SP_WQN_DEF)) {
6174                 cfg_fcp_wq_count = phba->sli4_hba.max_cfg_param.max_wq -
6175                                    LPFC_SP_WQN_DEF;
6176                 if (cfg_fcp_wq_count < LPFC_FP_WQN_MIN) {
6177                         lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
6178                                         "2581 Not enough WQs (%d) from "
6179                                         "the pci function for supporting "
6180                                         "FCP WQs (%d)\n",
6181                                         phba->sli4_hba.max_cfg_param.max_wq,
6182                                         phba->cfg_fcp_wq_count);
6183                         goto out_error;
6184                 }
6185                 lpfc_printf_log(phba, KERN_WARNING, LOG_INIT,
6186                                 "2582 Not enough WQs (%d) from the pci "
6187                                 "function for supporting the requested "
6188                                 "FCP WQs (%d), the actual FCP WQs can "
6189                                 "be supported: %d\n",
6190                                 phba->sli4_hba.max_cfg_param.max_wq,
6191                                 phba->cfg_fcp_wq_count, cfg_fcp_wq_count);
6192         }
6193         /* The actual number of FCP work queues adopted */
6194         phba->cfg_fcp_wq_count = cfg_fcp_wq_count;
6195
6196         /* Sanity check on FCP fast-path EQ parameters */
6197         cfg_fcp_eq_count = phba->cfg_fcp_eq_count;
6198         if (cfg_fcp_eq_count >
6199             (phba->sli4_hba.max_cfg_param.max_eq - LPFC_SP_EQN_DEF)) {
6200                 cfg_fcp_eq_count = phba->sli4_hba.max_cfg_param.max_eq -
6201                                    LPFC_SP_EQN_DEF;
6202                 if (cfg_fcp_eq_count < LPFC_FP_EQN_MIN) {
6203                         lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
6204                                         "2574 Not enough EQs (%d) from the "
6205                                         "pci function for supporting FCP "
6206                                         "EQs (%d)\n",
6207                                         phba->sli4_hba.max_cfg_param.max_eq,
6208                                         phba->cfg_fcp_eq_count);
6209                         goto out_error;
6210                 }
6211                 lpfc_printf_log(phba, KERN_WARNING, LOG_INIT,
6212                                 "2575 Not enough EQs (%d) from the pci "
6213                                 "function for supporting the requested "
6214                                 "FCP EQs (%d), the actual FCP EQs can "
6215                                 "be supported: %d\n",
6216                                 phba->sli4_hba.max_cfg_param.max_eq,
6217                                 phba->cfg_fcp_eq_count, cfg_fcp_eq_count);
6218         }
6219         /* It does not make sense to have more EQs than WQs */
6220         if (cfg_fcp_eq_count > phba->cfg_fcp_wq_count) {
6221                 lpfc_printf_log(phba, KERN_WARNING, LOG_INIT,
6222                                 "2593 The FCP EQ count(%d) cannot be greater "
6223                                 "than the FCP WQ count(%d), limiting the "
6224                                 "FCP EQ count to %d\n", cfg_fcp_eq_count,
6225                                 phba->cfg_fcp_wq_count,
6226                                 phba->cfg_fcp_wq_count);
6227                 cfg_fcp_eq_count = phba->cfg_fcp_wq_count;
6228         }
6229         /* The actual number of FCP event queues adopted */
6230         phba->cfg_fcp_eq_count = cfg_fcp_eq_count;
6231         /* The overall number of event queues used */
6232         phba->sli4_hba.cfg_eqn = phba->cfg_fcp_eq_count + LPFC_SP_EQN_DEF;
6233
6234         /*
6235          * Create Event Queues (EQs)
6236          */
6237
6238         /* Get EQ depth from module parameter, fake the default for now */
6239         phba->sli4_hba.eq_esize = LPFC_EQE_SIZE_4B;
6240         phba->sli4_hba.eq_ecount = LPFC_EQE_DEF_COUNT;
6241
6242         /* Create slow path event queue */
6243         qdesc = lpfc_sli4_queue_alloc(phba, phba->sli4_hba.eq_esize,
6244                                       phba->sli4_hba.eq_ecount);
6245         if (!qdesc) {
6246                 lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
6247                                 "0496 Failed allocate slow-path EQ\n");
6248                 goto out_error;
6249         }
6250         phba->sli4_hba.sp_eq = qdesc;
6251
6252         /* Create fast-path FCP Event Queue(s) */
6253         phba->sli4_hba.fp_eq = kzalloc((sizeof(struct lpfc_queue *) *
6254                                phba->cfg_fcp_eq_count), GFP_KERNEL);
6255         if (!phba->sli4_hba.fp_eq) {
6256                 lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
6257                                 "2576 Failed allocate memory for fast-path "
6258                                 "EQ record array\n");
6259                 goto out_free_sp_eq;
6260         }
6261         for (fcp_eqidx = 0; fcp_eqidx < phba->cfg_fcp_eq_count; fcp_eqidx++) {
6262                 qdesc = lpfc_sli4_queue_alloc(phba, phba->sli4_hba.eq_esize,
6263                                               phba->sli4_hba.eq_ecount);
6264                 if (!qdesc) {
6265                         lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
6266                                         "0497 Failed allocate fast-path EQ\n");
6267                         goto out_free_fp_eq;
6268                 }
6269                 phba->sli4_hba.fp_eq[fcp_eqidx] = qdesc;
6270         }
6271
6272         /*
6273          * Create Complete Queues (CQs)
6274          */
6275
6276         /* Get CQ depth from module parameter, fake the default for now */
6277         phba->sli4_hba.cq_esize = LPFC_CQE_SIZE;
6278         phba->sli4_hba.cq_ecount = LPFC_CQE_DEF_COUNT;
6279
6280         /* Create slow-path Mailbox Command Complete Queue */
6281         qdesc = lpfc_sli4_queue_alloc(phba, phba->sli4_hba.cq_esize,
6282                                       phba->sli4_hba.cq_ecount);
6283         if (!qdesc) {
6284                 lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
6285                                 "0500 Failed allocate slow-path mailbox CQ\n");
6286                 goto out_free_fp_eq;
6287         }
6288         phba->sli4_hba.mbx_cq = qdesc;
6289
6290         /* Create slow-path ELS Complete Queue */
6291         qdesc = lpfc_sli4_queue_alloc(phba, phba->sli4_hba.cq_esize,
6292                                       phba->sli4_hba.cq_ecount);
6293         if (!qdesc) {
6294                 lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
6295                                 "0501 Failed allocate slow-path ELS CQ\n");
6296                 goto out_free_mbx_cq;
6297         }
6298         phba->sli4_hba.els_cq = qdesc;
6299
6300
6301         /* Create fast-path FCP Completion Queue(s), one-to-one with EQs */
6302         phba->sli4_hba.fcp_cq = kzalloc((sizeof(struct lpfc_queue *) *
6303                                 phba->cfg_fcp_eq_count), GFP_KERNEL);
6304         if (!phba->sli4_hba.fcp_cq) {
6305                 lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
6306                                 "2577 Failed allocate memory for fast-path "
6307                                 "CQ record array\n");
6308                 goto out_free_els_cq;
6309         }
6310         for (fcp_cqidx = 0; fcp_cqidx < phba->cfg_fcp_eq_count; fcp_cqidx++) {
6311                 qdesc = lpfc_sli4_queue_alloc(phba, phba->sli4_hba.cq_esize,
6312                                               phba->sli4_hba.cq_ecount);
6313                 if (!qdesc) {
6314                         lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
6315                                         "0499 Failed allocate fast-path FCP "
6316                                         "CQ (%d)\n", fcp_cqidx);
6317                         goto out_free_fcp_cq;
6318                 }
6319                 phba->sli4_hba.fcp_cq[fcp_cqidx] = qdesc;
6320         }
6321
6322         /* Create Mailbox Command Queue */
6323         phba->sli4_hba.mq_esize = LPFC_MQE_SIZE;
6324         phba->sli4_hba.mq_ecount = LPFC_MQE_DEF_COUNT;
6325
6326         qdesc = lpfc_sli4_queue_alloc(phba, phba->sli4_hba.mq_esize,
6327                                       phba->sli4_hba.mq_ecount);
6328         if (!qdesc) {
6329                 lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
6330                                 "0505 Failed allocate slow-path MQ\n");
6331                 goto out_free_fcp_cq;
6332         }
6333         phba->sli4_hba.mbx_wq = qdesc;
6334
6335         /*
6336          * Create all the Work Queues (WQs)
6337          */
6338         phba->sli4_hba.wq_esize = LPFC_WQE_SIZE;
6339         phba->sli4_hba.wq_ecount = LPFC_WQE_DEF_COUNT;
6340
6341         /* Create slow-path ELS Work Queue */
6342         qdesc = lpfc_sli4_queue_alloc(phba, phba->sli4_hba.wq_esize,
6343                                       phba->sli4_hba.wq_ecount);
6344         if (!qdesc) {
6345                 lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
6346                                 "0504 Failed allocate slow-path ELS WQ\n");
6347                 goto out_free_mbx_wq;
6348         }
6349         phba->sli4_hba.els_wq = qdesc;
6350
6351         /* Create fast-path FCP Work Queue(s) */
6352         phba->sli4_hba.fcp_wq = kzalloc((sizeof(struct lpfc_queue *) *
6353                                 phba->cfg_fcp_wq_count), GFP_KERNEL);
6354         if (!phba->sli4_hba.fcp_wq) {
6355                 lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
6356                                 "2578 Failed allocate memory for fast-path "
6357                                 "WQ record array\n");
6358                 goto out_free_els_wq;
6359         }
6360         for (fcp_wqidx = 0; fcp_wqidx < phba->cfg_fcp_wq_count; fcp_wqidx++) {
6361                 qdesc = lpfc_sli4_queue_alloc(phba, phba->sli4_hba.wq_esize,
6362                                               phba->sli4_hba.wq_ecount);
6363                 if (!qdesc) {
6364                         lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
6365                                         "0503 Failed allocate fast-path FCP "
6366                                         "WQ (%d)\n", fcp_wqidx);
6367                         goto out_free_fcp_wq;
6368                 }
6369                 phba->sli4_hba.fcp_wq[fcp_wqidx] = qdesc;
6370         }
6371
6372         /*
6373          * Create Receive Queue (RQ)
6374          */
6375         phba->sli4_hba.rq_esize = LPFC_RQE_SIZE;
6376         phba->sli4_hba.rq_ecount = LPFC_RQE_DEF_COUNT;
6377
6378         /* Create Receive Queue for header */
6379         qdesc = lpfc_sli4_queue_alloc(phba, phba->sli4_hba.rq_esize,
6380                                       phba->sli4_hba.rq_ecount);
6381         if (!qdesc) {
6382                 lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
6383                                 "0506 Failed allocate receive HRQ\n");
6384                 goto out_free_fcp_wq;
6385         }
6386         phba->sli4_hba.hdr_rq = qdesc;
6387
6388         /* Create Receive Queue for data */
6389         qdesc = lpfc_sli4_queue_alloc(phba, phba->sli4_hba.rq_esize,
6390                                       phba->sli4_hba.rq_ecount);
6391         if (!qdesc) {
6392                 lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
6393                                 "0507 Failed allocate receive DRQ\n");
6394                 goto out_free_hdr_rq;
6395         }
6396         phba->sli4_hba.dat_rq = qdesc;
6397
6398         return 0;
6399
6400 out_free_hdr_rq:
6401         lpfc_sli4_queue_free(phba->sli4_hba.hdr_rq);
6402         phba->sli4_hba.hdr_rq = NULL;
6403 out_free_fcp_wq:
6404         for (--fcp_wqidx; fcp_wqidx >= 0; fcp_wqidx--) {
6405                 lpfc_sli4_queue_free(phba->sli4_hba.fcp_wq[fcp_wqidx]);
6406                 phba->sli4_hba.fcp_wq[fcp_wqidx] = NULL;
6407         }
6408         kfree(phba->sli4_hba.fcp_wq);
6409 out_free_els_wq:
6410         lpfc_sli4_queue_free(phba->sli4_hba.els_wq);
6411         phba->sli4_hba.els_wq = NULL;
6412 out_free_mbx_wq:
6413         lpfc_sli4_queue_free(phba->sli4_hba.mbx_wq);
6414         phba->sli4_hba.mbx_wq = NULL;
6415 out_free_fcp_cq:
6416         for (--fcp_cqidx; fcp_cqidx >= 0; fcp_cqidx--) {
6417                 lpfc_sli4_queue_free(phba->sli4_hba.fcp_cq[fcp_cqidx]);
6418                 phba->sli4_hba.fcp_cq[fcp_cqidx] = NULL;
6419         }
6420         kfree(phba->sli4_hba.fcp_cq);
6421 out_free_els_cq:
6422         lpfc_sli4_queue_free(phba->sli4_hba.els_cq);
6423         phba->sli4_hba.els_cq = NULL;
6424 out_free_mbx_cq:
6425         lpfc_sli4_queue_free(phba->sli4_hba.mbx_cq);
6426         phba->sli4_hba.mbx_cq = NULL;
6427 out_free_fp_eq:
6428         for (--fcp_eqidx; fcp_eqidx >= 0; fcp_eqidx--) {
6429                 lpfc_sli4_queue_free(phba->sli4_hba.fp_eq[fcp_eqidx]);
6430                 phba->sli4_hba.fp_eq[fcp_eqidx] = NULL;
6431         }
6432         kfree(phba->sli4_hba.fp_eq);
6433 out_free_sp_eq:
6434         lpfc_sli4_queue_free(phba->sli4_hba.sp_eq);
6435         phba->sli4_hba.sp_eq = NULL;
6436 out_error:
6437         return -ENOMEM;
6438 }
6439
6440 /**
6441  * lpfc_sli4_queue_destroy - Destroy all the SLI4 queues
6442  * @phba: pointer to lpfc hba data structure.
6443  *
6444  * This routine is invoked to release all the SLI4 queues with the FCoE HBA
6445  * operation.
6446  *
6447  * Return codes
6448  *      0 - successful
6449  *      -ENOMEM - No available memory
6450  *      -EIO - The mailbox failed to complete successfully.
6451  **/
6452 static void
6453 lpfc_sli4_queue_destroy(struct lpfc_hba *phba)
6454 {
6455         int fcp_qidx;
6456
6457         /* Release mailbox command work queue */
6458         lpfc_sli4_queue_free(phba->sli4_hba.mbx_wq);
6459         phba->sli4_hba.mbx_wq = NULL;
6460
6461         /* Release ELS work queue */
6462         lpfc_sli4_queue_free(phba->sli4_hba.els_wq);
6463         phba->sli4_hba.els_wq = NULL;
6464
6465         /* Release FCP work queue */
6466         for (fcp_qidx = 0; fcp_qidx < phba->cfg_fcp_wq_count; fcp_qidx++)
6467                 lpfc_sli4_queue_free(phba->sli4_hba.fcp_wq[fcp_qidx]);
6468         kfree(phba->sli4_hba.fcp_wq);
6469         phba->sli4_hba.fcp_wq = NULL;
6470
6471         /* Release unsolicited receive queue */
6472         lpfc_sli4_queue_free(phba->sli4_hba.hdr_rq);
6473         phba->sli4_hba.hdr_rq = NULL;
6474         lpfc_sli4_queue_free(phba->sli4_hba.dat_rq);
6475         phba->sli4_hba.dat_rq = NULL;
6476
6477         /* Release ELS complete queue */
6478         lpfc_sli4_queue_free(phba->sli4_hba.els_cq);
6479         phba->sli4_hba.els_cq = NULL;
6480
6481         /* Release mailbox command complete queue */
6482         lpfc_sli4_queue_free(phba->sli4_hba.mbx_cq);
6483         phba->sli4_hba.mbx_cq = NULL;
6484
6485         /* Release FCP response complete queue */
6486         fcp_qidx = 0;
6487         do
6488                 lpfc_sli4_queue_free(phba->sli4_hba.fcp_cq[fcp_qidx]);
6489         while (++fcp_qidx < phba->cfg_fcp_eq_count);
6490         kfree(phba->sli4_hba.fcp_cq);
6491         phba->sli4_hba.fcp_cq = NULL;
6492
6493         /* Release fast-path event queue */
6494         for (fcp_qidx = 0; fcp_qidx < phba->cfg_fcp_eq_count; fcp_qidx++)
6495                 lpfc_sli4_queue_free(phba->sli4_hba.fp_eq[fcp_qidx]);
6496         kfree(phba->sli4_hba.fp_eq);
6497         phba->sli4_hba.fp_eq = NULL;
6498
6499         /* Release slow-path event queue */
6500         lpfc_sli4_queue_free(phba->sli4_hba.sp_eq);
6501         phba->sli4_hba.sp_eq = NULL;
6502
6503         return;
6504 }
6505
6506 /**
6507  * lpfc_sli4_queue_setup - Set up all the SLI4 queues
6508  * @phba: pointer to lpfc hba data structure.
6509  *
6510  * This routine is invoked to set up all the SLI4 queues for the FCoE HBA
6511  * operation.
6512  *
6513  * Return codes
6514  *      0 - successful
6515  *      -ENOMEM - No available memory
6516  *      -EIO - The mailbox failed to complete successfully.
6517  **/
6518 int
6519 lpfc_sli4_queue_setup(struct lpfc_hba *phba)
6520 {
6521         int rc = -ENOMEM;
6522         int fcp_eqidx, fcp_cqidx, fcp_wqidx;
6523         int fcp_cq_index = 0;
6524
6525         /*
6526          * Set up Event Queues (EQs)
6527          */
6528
6529         /* Set up slow-path event queue */
6530         if (!phba->sli4_hba.sp_eq) {
6531                 lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
6532                                 "0520 Slow-path EQ not allocated\n");
6533                 goto out_error;
6534         }
6535         rc = lpfc_eq_create(phba, phba->sli4_hba.sp_eq,
6536                             LPFC_SP_DEF_IMAX);
6537         if (rc) {
6538                 lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
6539                                 "0521 Failed setup of slow-path EQ: "
6540                                 "rc = 0x%x\n", rc);
6541                 goto out_error;
6542         }
6543         lpfc_printf_log(phba, KERN_INFO, LOG_INIT,
6544                         "2583 Slow-path EQ setup: queue-id=%d\n",
6545                         phba->sli4_hba.sp_eq->queue_id);
6546
6547         /* Set up fast-path event queue */
6548         for (fcp_eqidx = 0; fcp_eqidx < phba->cfg_fcp_eq_count; fcp_eqidx++) {
6549                 if (!phba->sli4_hba.fp_eq[fcp_eqidx]) {
6550                         lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
6551                                         "0522 Fast-path EQ (%d) not "
6552                                         "allocated\n", fcp_eqidx);
6553                         goto out_destroy_fp_eq;
6554                 }
6555                 rc = lpfc_eq_create(phba, phba->sli4_hba.fp_eq[fcp_eqidx],
6556                                     phba->cfg_fcp_imax);
6557                 if (rc) {
6558                         lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
6559                                         "0523 Failed setup of fast-path EQ "
6560                                         "(%d), rc = 0x%x\n", fcp_eqidx, rc);
6561                         goto out_destroy_fp_eq;
6562                 }
6563                 lpfc_printf_log(phba, KERN_INFO, LOG_INIT,
6564                                 "2584 Fast-path EQ setup: "
6565                                 "queue[%d]-id=%d\n", fcp_eqidx,
6566                                 phba->sli4_hba.fp_eq[fcp_eqidx]->queue_id);
6567         }
6568
6569         /*
6570          * Set up Complete Queues (CQs)
6571          */
6572
6573         /* Set up slow-path MBOX Complete Queue as the first CQ */
6574         if (!phba->sli4_hba.mbx_cq) {
6575                 lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
6576                                 "0528 Mailbox CQ not allocated\n");
6577                 goto out_destroy_fp_eq;
6578         }
6579         rc = lpfc_cq_create(phba, phba->sli4_hba.mbx_cq, phba->sli4_hba.sp_eq,
6580                             LPFC_MCQ, LPFC_MBOX);
6581         if (rc) {
6582                 lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
6583                                 "0529 Failed setup of slow-path mailbox CQ: "
6584                                 "rc = 0x%x\n", rc);
6585                 goto out_destroy_fp_eq;
6586         }
6587         lpfc_printf_log(phba, KERN_INFO, LOG_INIT,
6588                         "2585 MBX CQ setup: cq-id=%d, parent eq-id=%d\n",
6589                         phba->sli4_hba.mbx_cq->queue_id,
6590                         phba->sli4_hba.sp_eq->queue_id);
6591
6592         /* Set up slow-path ELS Complete Queue */
6593         if (!phba->sli4_hba.els_cq) {
6594                 lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
6595                                 "0530 ELS CQ not allocated\n");
6596                 goto out_destroy_mbx_cq;
6597         }
6598         rc = lpfc_cq_create(phba, phba->sli4_hba.els_cq, phba->sli4_hba.sp_eq,
6599                             LPFC_WCQ, LPFC_ELS);
6600         if (rc) {
6601                 lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
6602                                 "0531 Failed setup of slow-path ELS CQ: "
6603                                 "rc = 0x%x\n", rc);
6604                 goto out_destroy_mbx_cq;
6605         }
6606         lpfc_printf_log(phba, KERN_INFO, LOG_INIT,
6607                         "2586 ELS CQ setup: cq-id=%d, parent eq-id=%d\n",
6608                         phba->sli4_hba.els_cq->queue_id,
6609                         phba->sli4_hba.sp_eq->queue_id);
6610
6611         /* Set up fast-path FCP Response Complete Queue */
6612         fcp_cqidx = 0;
6613         do {
6614                 if (!phba->sli4_hba.fcp_cq[fcp_cqidx]) {
6615                         lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
6616                                         "0526 Fast-path FCP CQ (%d) not "
6617                                         "allocated\n", fcp_cqidx);
6618                         goto out_destroy_fcp_cq;
6619                 }
6620                 if (phba->cfg_fcp_eq_count)
6621                         rc = lpfc_cq_create(phba,
6622                                             phba->sli4_hba.fcp_cq[fcp_cqidx],
6623                                             phba->sli4_hba.fp_eq[fcp_cqidx],
6624                                             LPFC_WCQ, LPFC_FCP);
6625                 else
6626                         rc = lpfc_cq_create(phba,
6627                                             phba->sli4_hba.fcp_cq[fcp_cqidx],
6628                                             phba->sli4_hba.sp_eq,
6629                                             LPFC_WCQ, LPFC_FCP);
6630                 if (rc) {
6631                         lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
6632                                         "0527 Failed setup of fast-path FCP "
6633                                         "CQ (%d), rc = 0x%x\n", fcp_cqidx, rc);
6634                         goto out_destroy_fcp_cq;
6635                 }
6636                 lpfc_printf_log(phba, KERN_INFO, LOG_INIT,
6637                                 "2588 FCP CQ setup: cq[%d]-id=%d, "
6638                                 "parent %seq[%d]-id=%d\n",
6639                                 fcp_cqidx,
6640                                 phba->sli4_hba.fcp_cq[fcp_cqidx]->queue_id,
6641                                 (phba->cfg_fcp_eq_count) ? "" : "sp_",
6642                                 fcp_cqidx,
6643                                 (phba->cfg_fcp_eq_count) ?
6644                                    phba->sli4_hba.fp_eq[fcp_cqidx]->queue_id :
6645                                    phba->sli4_hba.sp_eq->queue_id);
6646         } while (++fcp_cqidx < phba->cfg_fcp_eq_count);
6647
6648         /*
6649          * Set up all the Work Queues (WQs)
6650          */
6651
6652         /* Set up Mailbox Command Queue */
6653         if (!phba->sli4_hba.mbx_wq) {
6654                 lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
6655                                 "0538 Slow-path MQ not allocated\n");
6656                 goto out_destroy_fcp_cq;
6657         }
6658         rc = lpfc_mq_create(phba, phba->sli4_hba.mbx_wq,
6659                             phba->sli4_hba.mbx_cq, LPFC_MBOX);
6660         if (rc) {
6661                 lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
6662                                 "0539 Failed setup of slow-path MQ: "
6663                                 "rc = 0x%x\n", rc);
6664                 goto out_destroy_fcp_cq;
6665         }
6666         lpfc_printf_log(phba, KERN_INFO, LOG_INIT,
6667                         "2589 MBX MQ setup: wq-id=%d, parent cq-id=%d\n",
6668                         phba->sli4_hba.mbx_wq->queue_id,
6669                         phba->sli4_hba.mbx_cq->queue_id);
6670
6671         /* Set up slow-path ELS Work Queue */
6672         if (!phba->sli4_hba.els_wq) {
6673                 lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
6674                                 "0536 Slow-path ELS WQ not allocated\n");
6675                 goto out_destroy_mbx_wq;
6676         }
6677         rc = lpfc_wq_create(phba, phba->sli4_hba.els_wq,
6678                             phba->sli4_hba.els_cq, LPFC_ELS);
6679         if (rc) {
6680                 lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
6681                                 "0537 Failed setup of slow-path ELS WQ: "
6682                                 "rc = 0x%x\n", rc);
6683                 goto out_destroy_mbx_wq;
6684         }
6685         lpfc_printf_log(phba, KERN_INFO, LOG_INIT,
6686                         "2590 ELS WQ setup: wq-id=%d, parent cq-id=%d\n",
6687                         phba->sli4_hba.els_wq->queue_id,
6688                         phba->sli4_hba.els_cq->queue_id);
6689
6690         /* Set up fast-path FCP Work Queue */
6691         for (fcp_wqidx = 0; fcp_wqidx < phba->cfg_fcp_wq_count; fcp_wqidx++) {
6692                 if (!phba->sli4_hba.fcp_wq[fcp_wqidx]) {
6693                         lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
6694                                         "0534 Fast-path FCP WQ (%d) not "
6695                                         "allocated\n", fcp_wqidx);
6696                         goto out_destroy_fcp_wq;
6697                 }
6698                 rc = lpfc_wq_create(phba, phba->sli4_hba.fcp_wq[fcp_wqidx],
6699                                     phba->sli4_hba.fcp_cq[fcp_cq_index],
6700                                     LPFC_FCP);
6701                 if (rc) {
6702                         lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
6703                                         "0535 Failed setup of fast-path FCP "
6704                                         "WQ (%d), rc = 0x%x\n", fcp_wqidx, rc);
6705                         goto out_destroy_fcp_wq;
6706                 }
6707                 lpfc_printf_log(phba, KERN_INFO, LOG_INIT,
6708                                 "2591 FCP WQ setup: wq[%d]-id=%d, "
6709                                 "parent cq[%d]-id=%d\n",
6710                                 fcp_wqidx,
6711                                 phba->sli4_hba.fcp_wq[fcp_wqidx]->queue_id,
6712                                 fcp_cq_index,
6713                                 phba->sli4_hba.fcp_cq[fcp_cq_index]->queue_id);
6714                 /* Round robin FCP Work Queue's Completion Queue assignment */
6715                 if (phba->cfg_fcp_eq_count)
6716                         fcp_cq_index = ((fcp_cq_index + 1) %
6717                                         phba->cfg_fcp_eq_count);
6718         }
6719
6720         /*
6721          * Create Receive Queue (RQ)
6722          */
6723         if (!phba->sli4_hba.hdr_rq || !phba->sli4_hba.dat_rq) {
6724                 lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
6725                                 "0540 Receive Queue not allocated\n");
6726                 goto out_destroy_fcp_wq;
6727         }
6728         rc = lpfc_rq_create(phba, phba->sli4_hba.hdr_rq, phba->sli4_hba.dat_rq,
6729                             phba->sli4_hba.els_cq, LPFC_USOL);
6730         if (rc) {
6731                 lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
6732                                 "0541 Failed setup of Receive Queue: "
6733                                 "rc = 0x%x\n", rc);
6734                 goto out_destroy_fcp_wq;
6735         }
6736         lpfc_printf_log(phba, KERN_INFO, LOG_INIT,
6737                         "2592 USL RQ setup: hdr-rq-id=%d, dat-rq-id=%d "
6738                         "parent cq-id=%d\n",
6739                         phba->sli4_hba.hdr_rq->queue_id,
6740                         phba->sli4_hba.dat_rq->queue_id,
6741                         phba->sli4_hba.els_cq->queue_id);
6742         return 0;
6743
6744 out_destroy_fcp_wq:
6745         for (--fcp_wqidx; fcp_wqidx >= 0; fcp_wqidx--)
6746                 lpfc_wq_destroy(phba, phba->sli4_hba.fcp_wq[fcp_wqidx]);
6747         lpfc_wq_destroy(phba, phba->sli4_hba.els_wq);
6748 out_destroy_mbx_wq:
6749         lpfc_mq_destroy(phba, phba->sli4_hba.mbx_wq);
6750 out_destroy_fcp_cq:
6751         for (--fcp_cqidx; fcp_cqidx >= 0; fcp_cqidx--)
6752                 lpfc_cq_destroy(phba, phba->sli4_hba.fcp_cq[fcp_cqidx]);
6753         lpfc_cq_destroy(phba, phba->sli4_hba.els_cq);
6754 out_destroy_mbx_cq:
6755         lpfc_cq_destroy(phba, phba->sli4_hba.mbx_cq);
6756 out_destroy_fp_eq:
6757         for (--fcp_eqidx; fcp_eqidx >= 0; fcp_eqidx--)
6758                 lpfc_eq_destroy(phba, phba->sli4_hba.fp_eq[fcp_eqidx]);
6759         lpfc_eq_destroy(phba, phba->sli4_hba.sp_eq);
6760 out_error:
6761         return rc;
6762 }
6763
6764 /**
6765  * lpfc_sli4_queue_unset - Unset all the SLI4 queues
6766  * @phba: pointer to lpfc hba data structure.
6767  *
6768  * This routine is invoked to unset all the SLI4 queues with the FCoE HBA
6769  * operation.
6770  *
6771  * Return codes
6772  *      0 - successful
6773  *      -ENOMEM - No available memory
6774  *      -EIO - The mailbox failed to complete successfully.
6775  **/
6776 void
6777 lpfc_sli4_queue_unset(struct lpfc_hba *phba)
6778 {
6779         int fcp_qidx;
6780
6781         /* Unset mailbox command work queue */
6782         lpfc_mq_destroy(phba, phba->sli4_hba.mbx_wq);
6783         /* Unset ELS work queue */
6784         lpfc_wq_destroy(phba, phba->sli4_hba.els_wq);
6785         /* Unset unsolicited receive queue */
6786         lpfc_rq_destroy(phba, phba->sli4_hba.hdr_rq, phba->sli4_hba.dat_rq);
6787         /* Unset FCP work queue */
6788         for (fcp_qidx = 0; fcp_qidx < phba->cfg_fcp_wq_count; fcp_qidx++)
6789                 lpfc_wq_destroy(phba, phba->sli4_hba.fcp_wq[fcp_qidx]);
6790         /* Unset mailbox command complete queue */
6791         lpfc_cq_destroy(phba, phba->sli4_hba.mbx_cq);
6792         /* Unset ELS complete queue */
6793         lpfc_cq_destroy(phba, phba->sli4_hba.els_cq);
6794         /* Unset FCP response complete queue */
6795         for (fcp_qidx = 0; fcp_qidx < phba->cfg_fcp_eq_count; fcp_qidx++)
6796                 lpfc_cq_destroy(phba, phba->sli4_hba.fcp_cq[fcp_qidx]);
6797         /* Unset fast-path event queue */
6798         for (fcp_qidx = 0; fcp_qidx < phba->cfg_fcp_eq_count; fcp_qidx++)
6799                 lpfc_eq_destroy(phba, phba->sli4_hba.fp_eq[fcp_qidx]);
6800         /* Unset slow-path event queue */
6801         lpfc_eq_destroy(phba, phba->sli4_hba.sp_eq);
6802 }
6803
6804 /**
6805  * lpfc_sli4_cq_event_pool_create - Create completion-queue event free pool
6806  * @phba: pointer to lpfc hba data structure.
6807  *
6808  * This routine is invoked to allocate and set up a pool of completion queue
6809  * events. The body of the completion queue event is a completion queue entry
6810  * CQE. For now, this pool is used for the interrupt service routine to queue
6811  * the following HBA completion queue events for the worker thread to process:
6812  *   - Mailbox asynchronous events
6813  *   - Receive queue completion unsolicited events
6814  * Later, this can be used for all the slow-path events.
6815  *
6816  * Return codes
6817  *      0 - successful
6818  *      -ENOMEM - No available memory
6819  **/
6820 static int
6821 lpfc_sli4_cq_event_pool_create(struct lpfc_hba *phba)
6822 {
6823         struct lpfc_cq_event *cq_event;
6824         int i;
6825
6826         for (i = 0; i < (4 * phba->sli4_hba.cq_ecount); i++) {
6827                 cq_event = kmalloc(sizeof(struct lpfc_cq_event), GFP_KERNEL);
6828                 if (!cq_event)
6829                         goto out_pool_create_fail;
6830                 list_add_tail(&cq_event->list,
6831                               &phba->sli4_hba.sp_cqe_event_pool);
6832         }
6833         return 0;
6834
6835 out_pool_create_fail:
6836         lpfc_sli4_cq_event_pool_destroy(phba);
6837         return -ENOMEM;
6838 }
6839
6840 /**
6841  * lpfc_sli4_cq_event_pool_destroy - Free completion-queue event free pool
6842  * @phba: pointer to lpfc hba data structure.
6843  *
6844  * This routine is invoked to free the pool of completion queue events at
6845  * driver unload time. Note that, it is the responsibility of the driver
6846  * cleanup routine to free all the outstanding completion-queue events
6847  * allocated from this pool back into the pool before invoking this routine
6848  * to destroy the pool.
6849  **/
6850 static void
6851 lpfc_sli4_cq_event_pool_destroy(struct lpfc_hba *phba)
6852 {
6853         struct lpfc_cq_event *cq_event, *next_cq_event;
6854
6855         list_for_each_entry_safe(cq_event, next_cq_event,
6856                                  &phba->sli4_hba.sp_cqe_event_pool, list) {
6857                 list_del(&cq_event->list);
6858                 kfree(cq_event);
6859         }
6860 }
6861
6862 /**
6863  * __lpfc_sli4_cq_event_alloc - Allocate a completion-queue event from free pool
6864  * @phba: pointer to lpfc hba data structure.
6865  *
6866  * This routine is the lock free version of the API invoked to allocate a
6867  * completion-queue event from the free pool.
6868  *
6869  * Return: Pointer to the newly allocated completion-queue event if successful
6870  *         NULL otherwise.
6871  **/
6872 struct lpfc_cq_event *
6873 __lpfc_sli4_cq_event_alloc(struct lpfc_hba *phba)
6874 {
6875         struct lpfc_cq_event *cq_event = NULL;
6876
6877         list_remove_head(&phba->sli4_hba.sp_cqe_event_pool, cq_event,
6878                          struct lpfc_cq_event, list);
6879         return cq_event;
6880 }
6881
6882 /**
6883  * lpfc_sli4_cq_event_alloc - Allocate a completion-queue event from free pool
6884  * @phba: pointer to lpfc hba data structure.
6885  *
6886  * This routine is the lock version of the API invoked to allocate a
6887  * completion-queue event from the free pool.
6888  *
6889  * Return: Pointer to the newly allocated completion-queue event if successful
6890  *         NULL otherwise.
6891  **/
6892 struct lpfc_cq_event *
6893 lpfc_sli4_cq_event_alloc(struct lpfc_hba *phba)
6894 {
6895         struct lpfc_cq_event *cq_event;
6896         unsigned long iflags;
6897
6898         spin_lock_irqsave(&phba->hbalock, iflags);
6899         cq_event = __lpfc_sli4_cq_event_alloc(phba);
6900         spin_unlock_irqrestore(&phba->hbalock, iflags);
6901         return cq_event;
6902 }
6903
6904 /**
6905  * __lpfc_sli4_cq_event_release - Release a completion-queue event to free pool
6906  * @phba: pointer to lpfc hba data structure.
6907  * @cq_event: pointer to the completion queue event to be freed.
6908  *
6909  * This routine is the lock free version of the API invoked to release a
6910  * completion-queue event back into the free pool.
6911  **/
6912 void
6913 __lpfc_sli4_cq_event_release(struct lpfc_hba *phba,
6914                              struct lpfc_cq_event *cq_event)
6915 {
6916         list_add_tail(&cq_event->list, &phba->sli4_hba.sp_cqe_event_pool);
6917 }
6918
6919 /**
6920  * lpfc_sli4_cq_event_release - Release a completion-queue event to free pool
6921  * @phba: pointer to lpfc hba data structure.
6922  * @cq_event: pointer to the completion queue event to be freed.
6923  *
6924  * This routine is the lock version of the API invoked to release a
6925  * completion-queue event back into the free pool.
6926  **/
6927 void
6928 lpfc_sli4_cq_event_release(struct lpfc_hba *phba,
6929                            struct lpfc_cq_event *cq_event)
6930 {
6931         unsigned long iflags;
6932         spin_lock_irqsave(&phba->hbalock, iflags);
6933         __lpfc_sli4_cq_event_release(phba, cq_event);
6934         spin_unlock_irqrestore(&phba->hbalock, iflags);
6935 }
6936
6937 /**
6938  * lpfc_sli4_cq_event_release_all - Release all cq events to the free pool
6939  * @phba: pointer to lpfc hba data structure.
6940  *
6941  * This routine is to free all the pending completion-queue events to the
6942  * back into the free pool for device reset.
6943  **/
6944 static void
6945 lpfc_sli4_cq_event_release_all(struct lpfc_hba *phba)
6946 {
6947         LIST_HEAD(cqelist);
6948         struct lpfc_cq_event *cqe;
6949         unsigned long iflags;
6950
6951         /* Retrieve all the pending WCQEs from pending WCQE lists */
6952         spin_lock_irqsave(&phba->hbalock, iflags);
6953         /* Pending FCP XRI abort events */
6954         list_splice_init(&phba->sli4_hba.sp_fcp_xri_aborted_work_queue,
6955                          &cqelist);
6956         /* Pending ELS XRI abort events */
6957         list_splice_init(&phba->sli4_hba.sp_els_xri_aborted_work_queue,
6958                          &cqelist);
6959         /* Pending asynnc events */
6960         list_splice_init(&phba->sli4_hba.sp_asynce_work_queue,
6961                          &cqelist);
6962         spin_unlock_irqrestore(&phba->hbalock, iflags);
6963
6964         while (!list_empty(&cqelist)) {
6965                 list_remove_head(&cqelist, cqe, struct lpfc_cq_event, list);
6966                 lpfc_sli4_cq_event_release(phba, cqe);
6967         }
6968 }
6969
6970 /**
6971  * lpfc_pci_function_reset - Reset pci function.
6972  * @phba: pointer to lpfc hba data structure.
6973  *
6974  * This routine is invoked to request a PCI function reset. It will destroys
6975  * all resources assigned to the PCI function which originates this request.
6976  *
6977  * Return codes
6978  *      0 - successful
6979  *      -ENOMEM - No available memory
6980  *      -EIO - The mailbox failed to complete successfully.
6981  **/
6982 int
6983 lpfc_pci_function_reset(struct lpfc_hba *phba)
6984 {
6985         LPFC_MBOXQ_t *mboxq;
6986         uint32_t rc = 0, if_type;
6987         uint32_t shdr_status, shdr_add_status;
6988         uint32_t rdy_chk, num_resets = 0, reset_again = 0;
6989         union lpfc_sli4_cfg_shdr *shdr;
6990         struct lpfc_register reg_data;
6991
6992         if_type = bf_get(lpfc_sli_intf_if_type, &phba->sli4_hba.sli_intf);
6993         switch (if_type) {
6994         case LPFC_SLI_INTF_IF_TYPE_0:
6995                 mboxq = (LPFC_MBOXQ_t *) mempool_alloc(phba->mbox_mem_pool,
6996                                                        GFP_KERNEL);
6997                 if (!mboxq) {
6998                         lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
6999                                         "0494 Unable to allocate memory for "
7000                                         "issuing SLI_FUNCTION_RESET mailbox "
7001                                         "command\n");
7002                         return -ENOMEM;
7003                 }
7004
7005                 /* Setup PCI function reset mailbox-ioctl command */
7006                 lpfc_sli4_config(phba, mboxq, LPFC_MBOX_SUBSYSTEM_COMMON,
7007                                  LPFC_MBOX_OPCODE_FUNCTION_RESET, 0,
7008                                  LPFC_SLI4_MBX_EMBED);
7009                 rc = lpfc_sli_issue_mbox(phba, mboxq, MBX_POLL);
7010                 shdr = (union lpfc_sli4_cfg_shdr *)
7011                         &mboxq->u.mqe.un.sli4_config.header.cfg_shdr;
7012                 shdr_status = bf_get(lpfc_mbox_hdr_status, &shdr->response);
7013                 shdr_add_status = bf_get(lpfc_mbox_hdr_add_status,
7014                                          &shdr->response);
7015                 if (rc != MBX_TIMEOUT)
7016                         mempool_free(mboxq, phba->mbox_mem_pool);
7017                 if (shdr_status || shdr_add_status || rc) {
7018                         lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
7019                                         "0495 SLI_FUNCTION_RESET mailbox "
7020                                         "failed with status x%x add_status x%x,"
7021                                         " mbx status x%x\n",
7022                                         shdr_status, shdr_add_status, rc);
7023                         rc = -ENXIO;
7024                 }
7025                 break;
7026         case LPFC_SLI_INTF_IF_TYPE_2:
7027                 for (num_resets = 0;
7028                      num_resets < MAX_IF_TYPE_2_RESETS;
7029                      num_resets++) {
7030                         reg_data.word0 = 0;
7031                         bf_set(lpfc_sliport_ctrl_end, &reg_data,
7032                                LPFC_SLIPORT_LITTLE_ENDIAN);
7033                         bf_set(lpfc_sliport_ctrl_ip, &reg_data,
7034                                LPFC_SLIPORT_INIT_PORT);
7035                         writel(reg_data.word0, phba->sli4_hba.u.if_type2.
7036                                CTRLregaddr);
7037
7038                         /*
7039                          * Poll the Port Status Register and wait for RDY for
7040                          * up to 10 seconds.  If the port doesn't respond, treat
7041                          * it as an error.  If the port responds with RN, start
7042                          * the loop again.
7043                          */
7044                         for (rdy_chk = 0; rdy_chk < 1000; rdy_chk++) {
7045                                 if (lpfc_readl(phba->sli4_hba.u.if_type2.
7046                                               STATUSregaddr, &reg_data.word0)) {
7047                                         rc = -ENODEV;
7048                                         break;
7049                                 }
7050                                 if (bf_get(lpfc_sliport_status_rdy, &reg_data))
7051                                         break;
7052                                 if (bf_get(lpfc_sliport_status_rn, &reg_data)) {
7053                                         reset_again++;
7054                                         break;
7055                                 }
7056                                 msleep(10);
7057                         }
7058
7059                         /*
7060                          * If the port responds to the init request with
7061                          * reset needed, delay for a bit and restart the loop.
7062                          */
7063                         if (reset_again) {
7064                                 msleep(10);
7065                                 reset_again = 0;
7066                                 continue;
7067                         }
7068
7069                         /* Detect any port errors. */
7070                         if (lpfc_readl(phba->sli4_hba.u.if_type2.STATUSregaddr,
7071                                  &reg_data.word0)) {
7072                                 rc = -ENODEV;
7073                                 break;
7074                         }
7075                         if ((bf_get(lpfc_sliport_status_err, &reg_data)) ||
7076                             (rdy_chk >= 1000)) {
7077                                 phba->work_status[0] = readl(
7078                                         phba->sli4_hba.u.if_type2.ERR1regaddr);
7079                                 phba->work_status[1] = readl(
7080                                         phba->sli4_hba.u.if_type2.ERR2regaddr);
7081                                 lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
7082                                         "2890 Port Error Detected "
7083                                         "during Port Reset: "
7084                                         "port status reg 0x%x, "
7085                                         "error 1=0x%x, error 2=0x%x\n",
7086                                         reg_data.word0,
7087                                         phba->work_status[0],
7088                                         phba->work_status[1]);
7089                                 rc = -ENODEV;
7090                         }
7091
7092                         /*
7093                          * Terminate the outer loop provided the Port indicated
7094                          * ready within 10 seconds.
7095                          */
7096                         if (rdy_chk < 1000)
7097                                 break;
7098                 }
7099                 /* delay driver action following IF_TYPE_2 function reset */
7100                 msleep(100);
7101                 break;
7102         case LPFC_SLI_INTF_IF_TYPE_1:
7103         default:
7104                 break;
7105         }
7106
7107         /* Catch the not-ready port failure after a port reset. */
7108         if (num_resets >= MAX_IF_TYPE_2_RESETS)
7109                 rc = -ENODEV;
7110
7111         return rc;
7112 }
7113
7114 /**
7115  * lpfc_sli4_send_nop_mbox_cmds - Send sli-4 nop mailbox commands
7116  * @phba: pointer to lpfc hba data structure.
7117  * @cnt: number of nop mailbox commands to send.
7118  *
7119  * This routine is invoked to send a number @cnt of NOP mailbox command and
7120  * wait for each command to complete.
7121  *
7122  * Return: the number of NOP mailbox command completed.
7123  **/
7124 static int
7125 lpfc_sli4_send_nop_mbox_cmds(struct lpfc_hba *phba, uint32_t cnt)
7126 {
7127         LPFC_MBOXQ_t *mboxq;
7128         int length, cmdsent;
7129         uint32_t mbox_tmo;
7130         uint32_t rc = 0;
7131         uint32_t shdr_status, shdr_add_status;
7132         union lpfc_sli4_cfg_shdr *shdr;
7133
7134         if (cnt == 0) {
7135                 lpfc_printf_log(phba, KERN_WARNING, LOG_INIT,
7136                                 "2518 Requested to send 0 NOP mailbox cmd\n");
7137                 return cnt;
7138         }
7139
7140         mboxq = (LPFC_MBOXQ_t *)mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
7141         if (!mboxq) {
7142                 lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
7143                                 "2519 Unable to allocate memory for issuing "
7144                                 "NOP mailbox command\n");
7145                 return 0;
7146         }
7147
7148         /* Set up NOP SLI4_CONFIG mailbox-ioctl command */
7149         length = (sizeof(struct lpfc_mbx_nop) -
7150                   sizeof(struct lpfc_sli4_cfg_mhdr));
7151         lpfc_sli4_config(phba, mboxq, LPFC_MBOX_SUBSYSTEM_COMMON,
7152                          LPFC_MBOX_OPCODE_NOP, length, LPFC_SLI4_MBX_EMBED);
7153
7154         mbox_tmo = lpfc_mbox_tmo_val(phba, MBX_SLI4_CONFIG);
7155         for (cmdsent = 0; cmdsent < cnt; cmdsent++) {
7156                 if (!phba->sli4_hba.intr_enable)
7157                         rc = lpfc_sli_issue_mbox(phba, mboxq, MBX_POLL);
7158                 else
7159                         rc = lpfc_sli_issue_mbox_wait(phba, mboxq, mbox_tmo);
7160                 if (rc == MBX_TIMEOUT)
7161                         break;
7162                 /* Check return status */
7163                 shdr = (union lpfc_sli4_cfg_shdr *)
7164                         &mboxq->u.mqe.un.sli4_config.header.cfg_shdr;
7165                 shdr_status = bf_get(lpfc_mbox_hdr_status, &shdr->response);
7166                 shdr_add_status = bf_get(lpfc_mbox_hdr_add_status,
7167                                          &shdr->response);
7168                 if (shdr_status || shdr_add_status || rc) {
7169                         lpfc_printf_log(phba, KERN_WARNING, LOG_INIT,
7170                                         "2520 NOP mailbox command failed "
7171                                         "status x%x add_status x%x mbx "
7172                                         "status x%x\n", shdr_status,
7173                                         shdr_add_status, rc);
7174                         break;
7175                 }
7176         }
7177
7178         if (rc != MBX_TIMEOUT)
7179                 mempool_free(mboxq, phba->mbox_mem_pool);
7180
7181         return cmdsent;
7182 }
7183
7184 /**
7185  * lpfc_sli4_pci_mem_setup - Setup SLI4 HBA PCI memory space.
7186  * @phba: pointer to lpfc hba data structure.
7187  *
7188  * This routine is invoked to set up the PCI device memory space for device
7189  * with SLI-4 interface spec.
7190  *
7191  * Return codes
7192  *      0 - successful
7193  *      other values - error
7194  **/
7195 static int
7196 lpfc_sli4_pci_mem_setup(struct lpfc_hba *phba)
7197 {
7198         struct pci_dev *pdev;
7199         unsigned long bar0map_len, bar1map_len, bar2map_len;
7200         int error = -ENODEV;
7201         uint32_t if_type;
7202
7203         /* Obtain PCI device reference */
7204         if (!phba->pcidev)
7205                 return error;
7206         else
7207                 pdev = phba->pcidev;
7208
7209         /* Set the device DMA mask size */
7210         if (pci_set_dma_mask(pdev, DMA_BIT_MASK(64)) != 0
7211          || pci_set_consistent_dma_mask(pdev,DMA_BIT_MASK(64)) != 0) {
7212                 if (pci_set_dma_mask(pdev, DMA_BIT_MASK(32)) != 0
7213                  || pci_set_consistent_dma_mask(pdev,DMA_BIT_MASK(32)) != 0) {
7214                         return error;
7215                 }
7216         }
7217
7218         /*
7219          * The BARs and register set definitions and offset locations are
7220          * dependent on the if_type.
7221          */
7222         if (pci_read_config_dword(pdev, LPFC_SLI_INTF,
7223                                   &phba->sli4_hba.sli_intf.word0)) {
7224                 return error;
7225         }
7226
7227         /* There is no SLI3 failback for SLI4 devices. */
7228         if (bf_get(lpfc_sli_intf_valid, &phba->sli4_hba.sli_intf) !=
7229             LPFC_SLI_INTF_VALID) {
7230                 lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
7231                                 "2894 SLI_INTF reg contents invalid "
7232                                 "sli_intf reg 0x%x\n",
7233                                 phba->sli4_hba.sli_intf.word0);
7234                 return error;
7235         }
7236
7237         if_type = bf_get(lpfc_sli_intf_if_type, &phba->sli4_hba.sli_intf);
7238         /*
7239          * Get the bus address of SLI4 device Bar regions and the
7240          * number of bytes required by each mapping. The mapping of the
7241          * particular PCI BARs regions is dependent on the type of
7242          * SLI4 device.
7243          */
7244         if (pci_resource_start(pdev, 0)) {
7245                 phba->pci_bar0_map = pci_resource_start(pdev, 0);
7246                 bar0map_len = pci_resource_len(pdev, 0);
7247
7248                 /*
7249                  * Map SLI4 PCI Config Space Register base to a kernel virtual
7250                  * addr
7251                  */
7252                 phba->sli4_hba.conf_regs_memmap_p =
7253                         ioremap(phba->pci_bar0_map, bar0map_len);
7254                 if (!phba->sli4_hba.conf_regs_memmap_p) {
7255                         dev_printk(KERN_ERR, &pdev->dev,
7256                                    "ioremap failed for SLI4 PCI config "
7257                                    "registers.\n");
7258                         goto out;
7259                 }
7260                 /* Set up BAR0 PCI config space register memory map */
7261                 lpfc_sli4_bar0_register_memmap(phba, if_type);
7262         } else {
7263                 phba->pci_bar0_map = pci_resource_start(pdev, 1);
7264                 bar0map_len = pci_resource_len(pdev, 1);
7265                 if (if_type == LPFC_SLI_INTF_IF_TYPE_2) {
7266                         dev_printk(KERN_ERR, &pdev->dev,
7267                            "FATAL - No BAR0 mapping for SLI4, if_type 2\n");
7268                         goto out;
7269                 }
7270                 phba->sli4_hba.conf_regs_memmap_p =
7271                                 ioremap(phba->pci_bar0_map, bar0map_len);
7272                 if (!phba->sli4_hba.conf_regs_memmap_p) {
7273                         dev_printk(KERN_ERR, &pdev->dev,
7274                                 "ioremap failed for SLI4 PCI config "
7275                                 "registers.\n");
7276                                 goto out;
7277                 }
7278                 lpfc_sli4_bar0_register_memmap(phba, if_type);
7279         }
7280
7281         if ((if_type == LPFC_SLI_INTF_IF_TYPE_0) &&
7282             (pci_resource_start(pdev, 2))) {
7283                 /*
7284                  * Map SLI4 if type 0 HBA Control Register base to a kernel
7285                  * virtual address and setup the registers.
7286                  */
7287                 phba->pci_bar1_map = pci_resource_start(pdev, 2);
7288                 bar1map_len = pci_resource_len(pdev, 2);
7289                 phba->sli4_hba.ctrl_regs_memmap_p =
7290                                 ioremap(phba->pci_bar1_map, bar1map_len);
7291                 if (!phba->sli4_hba.ctrl_regs_memmap_p) {
7292                         dev_printk(KERN_ERR, &pdev->dev,
7293                            "ioremap failed for SLI4 HBA control registers.\n");
7294                         goto out_iounmap_conf;
7295                 }
7296                 lpfc_sli4_bar1_register_memmap(phba);
7297         }
7298
7299         if ((if_type == LPFC_SLI_INTF_IF_TYPE_0) &&
7300             (pci_resource_start(pdev, 4))) {
7301                 /*
7302                  * Map SLI4 if type 0 HBA Doorbell Register base to a kernel
7303                  * virtual address and setup the registers.
7304                  */
7305                 phba->pci_bar2_map = pci_resource_start(pdev, 4);
7306                 bar2map_len = pci_resource_len(pdev, 4);
7307                 phba->sli4_hba.drbl_regs_memmap_p =
7308                                 ioremap(phba->pci_bar2_map, bar2map_len);
7309                 if (!phba->sli4_hba.drbl_regs_memmap_p) {
7310                         dev_printk(KERN_ERR, &pdev->dev,
7311                            "ioremap failed for SLI4 HBA doorbell registers.\n");
7312                         goto out_iounmap_ctrl;
7313                 }
7314                 error = lpfc_sli4_bar2_register_memmap(phba, LPFC_VF0);
7315                 if (error)
7316                         goto out_iounmap_all;
7317         }
7318
7319         return 0;
7320
7321 out_iounmap_all:
7322         iounmap(phba->sli4_hba.drbl_regs_memmap_p);
7323 out_iounmap_ctrl:
7324         iounmap(phba->sli4_hba.ctrl_regs_memmap_p);
7325 out_iounmap_conf:
7326         iounmap(phba->sli4_hba.conf_regs_memmap_p);
7327 out:
7328         return error;
7329 }
7330
7331 /**
7332  * lpfc_sli4_pci_mem_unset - Unset SLI4 HBA PCI memory space.
7333  * @phba: pointer to lpfc hba data structure.
7334  *
7335  * This routine is invoked to unset the PCI device memory space for device
7336  * with SLI-4 interface spec.
7337  **/
7338 static void
7339 lpfc_sli4_pci_mem_unset(struct lpfc_hba *phba)
7340 {
7341         struct pci_dev *pdev;
7342
7343         /* Obtain PCI device reference */
7344         if (!phba->pcidev)
7345                 return;
7346         else
7347                 pdev = phba->pcidev;
7348
7349         /* Free coherent DMA memory allocated */
7350
7351         /* Unmap I/O memory space */
7352         iounmap(phba->sli4_hba.drbl_regs_memmap_p);
7353         iounmap(phba->sli4_hba.ctrl_regs_memmap_p);
7354         iounmap(phba->sli4_hba.conf_regs_memmap_p);
7355
7356         return;
7357 }
7358
7359 /**
7360  * lpfc_sli_enable_msix - Enable MSI-X interrupt mode on SLI-3 device
7361  * @phba: pointer to lpfc hba data structure.
7362  *
7363  * This routine is invoked to enable the MSI-X interrupt vectors to device
7364  * with SLI-3 interface specs. The kernel function pci_enable_msix() is
7365  * called to enable the MSI-X vectors. Note that pci_enable_msix(), once
7366  * invoked, enables either all or nothing, depending on the current
7367  * availability of PCI vector resources. The device driver is responsible
7368  * for calling the individual request_irq() to register each MSI-X vector
7369  * with a interrupt handler, which is done in this function. Note that
7370  * later when device is unloading, the driver should always call free_irq()
7371  * on all MSI-X vectors it has done request_irq() on before calling
7372  * pci_disable_msix(). Failure to do so results in a BUG_ON() and a device
7373  * will be left with MSI-X enabled and leaks its vectors.
7374  *
7375  * Return codes
7376  *   0 - successful
7377  *   other values - error
7378  **/
7379 static int
7380 lpfc_sli_enable_msix(struct lpfc_hba *phba)
7381 {
7382         int rc, i;
7383         LPFC_MBOXQ_t *pmb;
7384
7385         /* Set up MSI-X multi-message vectors */
7386         for (i = 0; i < LPFC_MSIX_VECTORS; i++)
7387                 phba->msix_entries[i].entry = i;
7388
7389         /* Configure MSI-X capability structure */
7390         rc = pci_enable_msix(phba->pcidev, phba->msix_entries,
7391                                 ARRAY_SIZE(phba->msix_entries));
7392         if (rc) {
7393                 lpfc_printf_log(phba, KERN_INFO, LOG_INIT,
7394                                 "0420 PCI enable MSI-X failed (%d)\n", rc);
7395                 goto msi_fail_out;
7396         }
7397         for (i = 0; i < LPFC_MSIX_VECTORS; i++)
7398                 lpfc_printf_log(phba, KERN_INFO, LOG_INIT,
7399                                 "0477 MSI-X entry[%d]: vector=x%x "
7400                                 "message=%d\n", i,
7401                                 phba->msix_entries[i].vector,
7402                                 phba->msix_entries[i].entry);
7403         /*
7404          * Assign MSI-X vectors to interrupt handlers
7405          */
7406
7407         /* vector-0 is associated to slow-path handler */
7408         rc = request_irq(phba->msix_entries[0].vector,
7409                          &lpfc_sli_sp_intr_handler, IRQF_SHARED,
7410                          LPFC_SP_DRIVER_HANDLER_NAME, phba);
7411         if (rc) {
7412                 lpfc_printf_log(phba, KERN_WARNING, LOG_INIT,
7413                                 "0421 MSI-X slow-path request_irq failed "
7414                                 "(%d)\n", rc);
7415                 goto msi_fail_out;
7416         }
7417
7418         /* vector-1 is associated to fast-path handler */
7419         rc = request_irq(phba->msix_entries[1].vector,
7420                          &lpfc_sli_fp_intr_handler, IRQF_SHARED,
7421                          LPFC_FP_DRIVER_HANDLER_NAME, phba);
7422
7423         if (rc) {
7424                 lpfc_printf_log(phba, KERN_WARNING, LOG_INIT,
7425                                 "0429 MSI-X fast-path request_irq failed "
7426                                 "(%d)\n", rc);
7427                 goto irq_fail_out;
7428         }
7429
7430         /*
7431          * Configure HBA MSI-X attention conditions to messages
7432          */
7433         pmb = (LPFC_MBOXQ_t *) mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
7434
7435         if (!pmb) {
7436                 rc = -ENOMEM;
7437                 lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
7438                                 "0474 Unable to allocate memory for issuing "
7439                                 "MBOX_CONFIG_MSI command\n");
7440                 goto mem_fail_out;
7441         }
7442         rc = lpfc_config_msi(phba, pmb);
7443         if (rc)
7444                 goto mbx_fail_out;
7445         rc = lpfc_sli_issue_mbox(phba, pmb, MBX_POLL);
7446         if (rc != MBX_SUCCESS) {
7447                 lpfc_printf_log(phba, KERN_WARNING, LOG_MBOX,
7448                                 "0351 Config MSI mailbox command failed, "
7449                                 "mbxCmd x%x, mbxStatus x%x\n",
7450                                 pmb->u.mb.mbxCommand, pmb->u.mb.mbxStatus);
7451                 goto mbx_fail_out;
7452         }
7453
7454         /* Free memory allocated for mailbox command */
7455         mempool_free(pmb, phba->mbox_mem_pool);
7456         return rc;
7457
7458 mbx_fail_out:
7459         /* Free memory allocated for mailbox command */
7460         mempool_free(pmb, phba->mbox_mem_pool);
7461
7462 mem_fail_out:
7463         /* free the irq already requested */
7464         free_irq(phba->msix_entries[1].vector, phba);
7465
7466 irq_fail_out:
7467         /* free the irq already requested */
7468         free_irq(phba->msix_entries[0].vector, phba);
7469
7470 msi_fail_out:
7471         /* Unconfigure MSI-X capability structure */
7472         pci_disable_msix(phba->pcidev);
7473         return rc;
7474 }
7475
7476 /**
7477  * lpfc_sli_disable_msix - Disable MSI-X interrupt mode on SLI-3 device.
7478  * @phba: pointer to lpfc hba data structure.
7479  *
7480  * This routine is invoked to release the MSI-X vectors and then disable the
7481  * MSI-X interrupt mode to device with SLI-3 interface spec.
7482  **/
7483 static void
7484 lpfc_sli_disable_msix(struct lpfc_hba *phba)
7485 {
7486         int i;
7487
7488         /* Free up MSI-X multi-message vectors */
7489         for (i = 0; i < LPFC_MSIX_VECTORS; i++)
7490                 free_irq(phba->msix_entries[i].vector, phba);
7491         /* Disable MSI-X */
7492         pci_disable_msix(phba->pcidev);
7493
7494         return;
7495 }
7496
7497 /**
7498  * lpfc_sli_enable_msi - Enable MSI interrupt mode on SLI-3 device.
7499  * @phba: pointer to lpfc hba data structure.
7500  *
7501  * This routine is invoked to enable the MSI interrupt mode to device with
7502  * SLI-3 interface spec. The kernel function pci_enable_msi() is called to
7503  * enable the MSI vector. The device driver is responsible for calling the
7504  * request_irq() to register MSI vector with a interrupt the handler, which
7505  * is done in this function.
7506  *
7507  * Return codes
7508  *      0 - successful
7509  *      other values - error
7510  */
7511 static int
7512 lpfc_sli_enable_msi(struct lpfc_hba *phba)
7513 {
7514         int rc;
7515
7516         rc = pci_enable_msi(phba->pcidev);
7517         if (!rc)
7518                 lpfc_printf_log(phba, KERN_INFO, LOG_INIT,
7519                                 "0462 PCI enable MSI mode success.\n");
7520         else {
7521                 lpfc_printf_log(phba, KERN_INFO, LOG_INIT,
7522                                 "0471 PCI enable MSI mode failed (%d)\n", rc);
7523                 return rc;
7524         }
7525
7526         rc = request_irq(phba->pcidev->irq, lpfc_sli_intr_handler,
7527                          IRQF_SHARED, LPFC_DRIVER_NAME, phba);
7528         if (rc) {
7529                 pci_disable_msi(phba->pcidev);
7530                 lpfc_printf_log(phba, KERN_WARNING, LOG_INIT,
7531                                 "0478 MSI request_irq failed (%d)\n", rc);
7532         }
7533         return rc;
7534 }
7535
7536 /**
7537  * lpfc_sli_disable_msi - Disable MSI interrupt mode to SLI-3 device.
7538  * @phba: pointer to lpfc hba data structure.
7539  *
7540  * This routine is invoked to disable the MSI interrupt mode to device with
7541  * SLI-3 interface spec. The driver calls free_irq() on MSI vector it has
7542  * done request_irq() on before calling pci_disable_msi(). Failure to do so
7543  * results in a BUG_ON() and a device will be left with MSI enabled and leaks
7544  * its vector.
7545  */
7546 static void
7547 lpfc_sli_disable_msi(struct lpfc_hba *phba)
7548 {
7549         free_irq(phba->pcidev->irq, phba);
7550         pci_disable_msi(phba->pcidev);
7551         return;
7552 }
7553
7554 /**
7555  * lpfc_sli_enable_intr - Enable device interrupt to SLI-3 device.
7556  * @phba: pointer to lpfc hba data structure.
7557  *
7558  * This routine is invoked to enable device interrupt and associate driver's
7559  * interrupt handler(s) to interrupt vector(s) to device with SLI-3 interface
7560  * spec. Depends on the interrupt mode configured to the driver, the driver
7561  * will try to fallback from the configured interrupt mode to an interrupt
7562  * mode which is supported by the platform, kernel, and device in the order
7563  * of:
7564  * MSI-X -> MSI -> IRQ.
7565  *
7566  * Return codes
7567  *   0 - successful
7568  *   other values - error
7569  **/
7570 static uint32_t
7571 lpfc_sli_enable_intr(struct lpfc_hba *phba, uint32_t cfg_mode)
7572 {
7573         uint32_t intr_mode = LPFC_INTR_ERROR;
7574         int retval;
7575
7576         if (cfg_mode == 2) {
7577                 /* Need to issue conf_port mbox cmd before conf_msi mbox cmd */
7578                 retval = lpfc_sli_config_port(phba, LPFC_SLI_REV3);
7579                 if (!retval) {
7580                         /* Now, try to enable MSI-X interrupt mode */
7581                         retval = lpfc_sli_enable_msix(phba);
7582                         if (!retval) {
7583                                 /* Indicate initialization to MSI-X mode */
7584                                 phba->intr_type = MSIX;
7585                                 intr_mode = 2;
7586                         }
7587                 }
7588         }
7589
7590         /* Fallback to MSI if MSI-X initialization failed */
7591         if (cfg_mode >= 1 && phba->intr_type == NONE) {
7592                 retval = lpfc_sli_enable_msi(phba);
7593                 if (!retval) {
7594                         /* Indicate initialization to MSI mode */
7595                         phba->intr_type = MSI;
7596                         intr_mode = 1;
7597                 }
7598         }
7599
7600         /* Fallback to INTx if both MSI-X/MSI initalization failed */
7601         if (phba->intr_type == NONE) {
7602                 retval = request_irq(phba->pcidev->irq, lpfc_sli_intr_handler,
7603                                      IRQF_SHARED, LPFC_DRIVER_NAME, phba);
7604                 if (!retval) {
7605                         /* Indicate initialization to INTx mode */
7606                         phba->intr_type = INTx;
7607                         intr_mode = 0;
7608                 }
7609         }
7610         return intr_mode;
7611 }
7612
7613 /**
7614  * lpfc_sli_disable_intr - Disable device interrupt to SLI-3 device.
7615  * @phba: pointer to lpfc hba data structure.
7616  *
7617  * This routine is invoked to disable device interrupt and disassociate the
7618  * driver's interrupt handler(s) from interrupt vector(s) to device with
7619  * SLI-3 interface spec. Depending on the interrupt mode, the driver will
7620  * release the interrupt vector(s) for the message signaled interrupt.
7621  **/
7622 static void
7623 lpfc_sli_disable_intr(struct lpfc_hba *phba)
7624 {
7625         /* Disable the currently initialized interrupt mode */
7626         if (phba->intr_type == MSIX)
7627                 lpfc_sli_disable_msix(phba);
7628         else if (phba->intr_type == MSI)
7629                 lpfc_sli_disable_msi(phba);
7630         else if (phba->intr_type == INTx)
7631                 free_irq(phba->pcidev->irq, phba);
7632
7633         /* Reset interrupt management states */
7634         phba->intr_type = NONE;
7635         phba->sli.slistat.sli_intr = 0;
7636
7637         return;
7638 }
7639
7640 /**
7641  * lpfc_sli4_enable_msix - Enable MSI-X interrupt mode to SLI-4 device
7642  * @phba: pointer to lpfc hba data structure.
7643  *
7644  * This routine is invoked to enable the MSI-X interrupt vectors to device
7645  * with SLI-4 interface spec. The kernel function pci_enable_msix() is called
7646  * to enable the MSI-X vectors. Note that pci_enable_msix(), once invoked,
7647  * enables either all or nothing, depending on the current availability of
7648  * PCI vector resources. The device driver is responsible for calling the
7649  * individual request_irq() to register each MSI-X vector with a interrupt
7650  * handler, which is done in this function. Note that later when device is
7651  * unloading, the driver should always call free_irq() on all MSI-X vectors
7652  * it has done request_irq() on before calling pci_disable_msix(). Failure
7653  * to do so results in a BUG_ON() and a device will be left with MSI-X
7654  * enabled and leaks its vectors.
7655  *
7656  * Return codes
7657  * 0 - successful
7658  * other values - error
7659  **/
7660 static int
7661 lpfc_sli4_enable_msix(struct lpfc_hba *phba)
7662 {
7663         int vectors, rc, index;
7664
7665         /* Set up MSI-X multi-message vectors */
7666         for (index = 0; index < phba->sli4_hba.cfg_eqn; index++)
7667                 phba->sli4_hba.msix_entries[index].entry = index;
7668
7669         /* Configure MSI-X capability structure */
7670         vectors = phba->sli4_hba.cfg_eqn;
7671 enable_msix_vectors:
7672         rc = pci_enable_msix(phba->pcidev, phba->sli4_hba.msix_entries,
7673                              vectors);
7674         if (rc > 1) {
7675                 vectors = rc;
7676                 goto enable_msix_vectors;
7677         } else if (rc) {
7678                 lpfc_printf_log(phba, KERN_INFO, LOG_INIT,
7679                                 "0484 PCI enable MSI-X failed (%d)\n", rc);
7680                 goto msi_fail_out;
7681         }
7682
7683         /* Log MSI-X vector assignment */
7684         for (index = 0; index < vectors; index++)
7685                 lpfc_printf_log(phba, KERN_INFO, LOG_INIT,
7686                                 "0489 MSI-X entry[%d]: vector=x%x "
7687                                 "message=%d\n", index,
7688                                 phba->sli4_hba.msix_entries[index].vector,
7689                                 phba->sli4_hba.msix_entries[index].entry);
7690         /*
7691          * Assign MSI-X vectors to interrupt handlers
7692          */
7693         if (vectors > 1)
7694                 rc = request_irq(phba->sli4_hba.msix_entries[0].vector,
7695                                  &lpfc_sli4_sp_intr_handler, IRQF_SHARED,
7696                                  LPFC_SP_DRIVER_HANDLER_NAME, phba);
7697         else
7698                 /* All Interrupts need to be handled by one EQ */
7699                 rc = request_irq(phba->sli4_hba.msix_entries[0].vector,
7700                                  &lpfc_sli4_intr_handler, IRQF_SHARED,
7701                                  LPFC_DRIVER_NAME, phba);
7702         if (rc) {
7703                 lpfc_printf_log(phba, KERN_WARNING, LOG_INIT,
7704                                 "0485 MSI-X slow-path request_irq failed "
7705                                 "(%d)\n", rc);
7706                 goto msi_fail_out;
7707         }
7708
7709         /* The rest of the vector(s) are associated to fast-path handler(s) */
7710         for (index = 1; index < vectors; index++) {
7711                 phba->sli4_hba.fcp_eq_hdl[index - 1].idx = index - 1;
7712                 phba->sli4_hba.fcp_eq_hdl[index - 1].phba = phba;
7713                 rc = request_irq(phba->sli4_hba.msix_entries[index].vector,
7714                                  &lpfc_sli4_fp_intr_handler, IRQF_SHARED,
7715                                  LPFC_FP_DRIVER_HANDLER_NAME,
7716                                  &phba->sli4_hba.fcp_eq_hdl[index - 1]);
7717                 if (rc) {
7718                         lpfc_printf_log(phba, KERN_WARNING, LOG_INIT,
7719                                         "0486 MSI-X fast-path (%d) "
7720                                         "request_irq failed (%d)\n", index, rc);
7721                         goto cfg_fail_out;
7722                 }
7723         }
7724         phba->sli4_hba.msix_vec_nr = vectors;
7725
7726         return rc;
7727
7728 cfg_fail_out:
7729         /* free the irq already requested */
7730         for (--index; index >= 1; index--)
7731                 free_irq(phba->sli4_hba.msix_entries[index - 1].vector,
7732                          &phba->sli4_hba.fcp_eq_hdl[index - 1]);
7733
7734         /* free the irq already requested */
7735         free_irq(phba->sli4_hba.msix_entries[0].vector, phba);
7736
7737 msi_fail_out:
7738         /* Unconfigure MSI-X capability structure */
7739         pci_disable_msix(phba->pcidev);
7740         return rc;
7741 }
7742
7743 /**
7744  * lpfc_sli4_disable_msix - Disable MSI-X interrupt mode to SLI-4 device
7745  * @phba: pointer to lpfc hba data structure.
7746  *
7747  * This routine is invoked to release the MSI-X vectors and then disable the
7748  * MSI-X interrupt mode to device with SLI-4 interface spec.
7749  **/
7750 static void
7751 lpfc_sli4_disable_msix(struct lpfc_hba *phba)
7752 {
7753         int index;
7754
7755         /* Free up MSI-X multi-message vectors */
7756         free_irq(phba->sli4_hba.msix_entries[0].vector, phba);
7757
7758         for (index = 1; index < phba->sli4_hba.msix_vec_nr; index++)
7759                 free_irq(phba->sli4_hba.msix_entries[index].vector,
7760                          &phba->sli4_hba.fcp_eq_hdl[index - 1]);
7761
7762         /* Disable MSI-X */
7763         pci_disable_msix(phba->pcidev);
7764
7765         return;
7766 }
7767
7768 /**
7769  * lpfc_sli4_enable_msi - Enable MSI interrupt mode to SLI-4 device
7770  * @phba: pointer to lpfc hba data structure.
7771  *
7772  * This routine is invoked to enable the MSI interrupt mode to device with
7773  * SLI-4 interface spec. The kernel function pci_enable_msi() is called
7774  * to enable the MSI vector. The device driver is responsible for calling
7775  * the request_irq() to register MSI vector with a interrupt the handler,
7776  * which is done in this function.
7777  *
7778  * Return codes
7779  *      0 - successful
7780  *      other values - error
7781  **/
7782 static int
7783 lpfc_sli4_enable_msi(struct lpfc_hba *phba)
7784 {
7785         int rc, index;
7786
7787         rc = pci_enable_msi(phba->pcidev);
7788         if (!rc)
7789                 lpfc_printf_log(phba, KERN_INFO, LOG_INIT,
7790                                 "0487 PCI enable MSI mode success.\n");
7791         else {
7792                 lpfc_printf_log(phba, KERN_INFO, LOG_INIT,
7793                                 "0488 PCI enable MSI mode failed (%d)\n", rc);
7794                 return rc;
7795         }
7796
7797         rc = request_irq(phba->pcidev->irq, lpfc_sli4_intr_handler,
7798                          IRQF_SHARED, LPFC_DRIVER_NAME, phba);
7799         if (rc) {
7800                 pci_disable_msi(phba->pcidev);
7801                 lpfc_printf_log(phba, KERN_WARNING, LOG_INIT,
7802                                 "0490 MSI request_irq failed (%d)\n", rc);
7803                 return rc;
7804         }
7805
7806         for (index = 0; index < phba->cfg_fcp_eq_count; index++) {
7807                 phba->sli4_hba.fcp_eq_hdl[index].idx = index;
7808                 phba->sli4_hba.fcp_eq_hdl[index].phba = phba;
7809         }
7810
7811         return 0;
7812 }
7813
7814 /**
7815  * lpfc_sli4_disable_msi - Disable MSI interrupt mode to SLI-4 device
7816  * @phba: pointer to lpfc hba data structure.
7817  *
7818  * This routine is invoked to disable the MSI interrupt mode to device with
7819  * SLI-4 interface spec. The driver calls free_irq() on MSI vector it has
7820  * done request_irq() on before calling pci_disable_msi(). Failure to do so
7821  * results in a BUG_ON() and a device will be left with MSI enabled and leaks
7822  * its vector.
7823  **/
7824 static void
7825 lpfc_sli4_disable_msi(struct lpfc_hba *phba)
7826 {
7827         free_irq(phba->pcidev->irq, phba);
7828         pci_disable_msi(phba->pcidev);
7829         return;
7830 }
7831
7832 /**
7833  * lpfc_sli4_enable_intr - Enable device interrupt to SLI-4 device
7834  * @phba: pointer to lpfc hba data structure.
7835  *
7836  * This routine is invoked to enable device interrupt and associate driver's
7837  * interrupt handler(s) to interrupt vector(s) to device with SLI-4
7838  * interface spec. Depends on the interrupt mode configured to the driver,
7839  * the driver will try to fallback from the configured interrupt mode to an
7840  * interrupt mode which is supported by the platform, kernel, and device in
7841  * the order of:
7842  * MSI-X -> MSI -> IRQ.
7843  *
7844  * Return codes
7845  *      0 - successful
7846  *      other values - error
7847  **/
7848 static uint32_t
7849 lpfc_sli4_enable_intr(struct lpfc_hba *phba, uint32_t cfg_mode)
7850 {
7851         uint32_t intr_mode = LPFC_INTR_ERROR;
7852         int retval, index;
7853
7854         if (cfg_mode == 2) {
7855                 /* Preparation before conf_msi mbox cmd */
7856                 retval = 0;
7857                 if (!retval) {
7858                         /* Now, try to enable MSI-X interrupt mode */
7859                         retval = lpfc_sli4_enable_msix(phba);
7860                         if (!retval) {
7861                                 /* Indicate initialization to MSI-X mode */
7862                                 phba->intr_type = MSIX;
7863                                 intr_mode = 2;
7864                         }
7865                 }
7866         }
7867
7868         /* Fallback to MSI if MSI-X initialization failed */
7869         if (cfg_mode >= 1 && phba->intr_type == NONE) {
7870                 retval = lpfc_sli4_enable_msi(phba);
7871                 if (!retval) {
7872                         /* Indicate initialization to MSI mode */
7873                         phba->intr_type = MSI;
7874                         intr_mode = 1;
7875                 }
7876         }
7877
7878         /* Fallback to INTx if both MSI-X/MSI initalization failed */
7879         if (phba->intr_type == NONE) {
7880                 retval = request_irq(phba->pcidev->irq, lpfc_sli4_intr_handler,
7881                                      IRQF_SHARED, LPFC_DRIVER_NAME, phba);
7882                 if (!retval) {
7883                         /* Indicate initialization to INTx mode */
7884                         phba->intr_type = INTx;
7885                         intr_mode = 0;
7886                         for (index = 0; index < phba->cfg_fcp_eq_count;
7887                              index++) {
7888                                 phba->sli4_hba.fcp_eq_hdl[index].idx = index;
7889                                 phba->sli4_hba.fcp_eq_hdl[index].phba = phba;
7890                         }
7891                 }
7892         }
7893         return intr_mode;
7894 }
7895
7896 /**
7897  * lpfc_sli4_disable_intr - Disable device interrupt to SLI-4 device
7898  * @phba: pointer to lpfc hba data structure.
7899  *
7900  * This routine is invoked to disable device interrupt and disassociate
7901  * the driver's interrupt handler(s) from interrupt vector(s) to device
7902  * with SLI-4 interface spec. Depending on the interrupt mode, the driver
7903  * will release the interrupt vector(s) for the message signaled interrupt.
7904  **/
7905 static void
7906 lpfc_sli4_disable_intr(struct lpfc_hba *phba)
7907 {
7908         /* Disable the currently initialized interrupt mode */
7909         if (phba->intr_type == MSIX)
7910                 lpfc_sli4_disable_msix(phba);
7911         else if (phba->intr_type == MSI)
7912                 lpfc_sli4_disable_msi(phba);
7913         else if (phba->intr_type == INTx)
7914                 free_irq(phba->pcidev->irq, phba);
7915
7916         /* Reset interrupt management states */
7917         phba->intr_type = NONE;
7918         phba->sli.slistat.sli_intr = 0;
7919
7920         return;
7921 }
7922
7923 /**
7924  * lpfc_unset_hba - Unset SLI3 hba device initialization
7925  * @phba: pointer to lpfc hba data structure.
7926  *
7927  * This routine is invoked to unset the HBA device initialization steps to
7928  * a device with SLI-3 interface spec.
7929  **/
7930 static void
7931 lpfc_unset_hba(struct lpfc_hba *phba)
7932 {
7933         struct lpfc_vport *vport = phba->pport;
7934         struct Scsi_Host  *shost = lpfc_shost_from_vport(vport);
7935
7936         spin_lock_irq(shost->host_lock);
7937         vport->load_flag |= FC_UNLOADING;
7938         spin_unlock_irq(shost->host_lock);
7939
7940         lpfc_stop_hba_timers(phba);
7941
7942         phba->pport->work_port_events = 0;
7943
7944         lpfc_sli_hba_down(phba);
7945
7946         lpfc_sli_brdrestart(phba);
7947
7948         lpfc_sli_disable_intr(phba);
7949
7950         return;
7951 }
7952
7953 /**
7954  * lpfc_sli4_unset_hba - Unset SLI4 hba device initialization.
7955  * @phba: pointer to lpfc hba data structure.
7956  *
7957  * This routine is invoked to unset the HBA device initialization steps to
7958  * a device with SLI-4 interface spec.
7959  **/
7960 static void
7961 lpfc_sli4_unset_hba(struct lpfc_hba *phba)
7962 {
7963         struct lpfc_vport *vport = phba->pport;
7964         struct Scsi_Host  *shost = lpfc_shost_from_vport(vport);
7965
7966         spin_lock_irq(shost->host_lock);
7967         vport->load_flag |= FC_UNLOADING;
7968         spin_unlock_irq(shost->host_lock);
7969
7970         phba->pport->work_port_events = 0;
7971
7972         /* Stop the SLI4 device port */
7973         lpfc_stop_port(phba);
7974
7975         lpfc_sli4_disable_intr(phba);
7976
7977         /* Reset SLI4 HBA FCoE function */
7978         lpfc_pci_function_reset(phba);
7979
7980         return;
7981 }
7982
7983 /**
7984  * lpfc_sli4_xri_exchange_busy_wait - Wait for device XRI exchange busy
7985  * @phba: Pointer to HBA context object.
7986  *
7987  * This function is called in the SLI4 code path to wait for completion
7988  * of device's XRIs exchange busy. It will check the XRI exchange busy
7989  * on outstanding FCP and ELS I/Os every 10ms for up to 10 seconds; after
7990  * that, it will check the XRI exchange busy on outstanding FCP and ELS
7991  * I/Os every 30 seconds, log error message, and wait forever. Only when
7992  * all XRI exchange busy complete, the driver unload shall proceed with
7993  * invoking the function reset ioctl mailbox command to the CNA and the
7994  * the rest of the driver unload resource release.
7995  **/
7996 static void
7997 lpfc_sli4_xri_exchange_busy_wait(struct lpfc_hba *phba)
7998 {
7999         int wait_time = 0;
8000         int fcp_xri_cmpl = list_empty(&phba->sli4_hba.lpfc_abts_scsi_buf_list);
8001         int els_xri_cmpl = list_empty(&phba->sli4_hba.lpfc_abts_els_sgl_list);
8002
8003         while (!fcp_xri_cmpl || !els_xri_cmpl) {
8004                 if (wait_time > LPFC_XRI_EXCH_BUSY_WAIT_TMO) {
8005                         if (!fcp_xri_cmpl)
8006                                 lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
8007                                                 "2877 FCP XRI exchange busy "
8008                                                 "wait time: %d seconds.\n",
8009                                                 wait_time/1000);
8010                         if (!els_xri_cmpl)
8011                                 lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
8012                                                 "2878 ELS XRI exchange busy "
8013                                                 "wait time: %d seconds.\n",
8014                                                 wait_time/1000);
8015                         msleep(LPFC_XRI_EXCH_BUSY_WAIT_T2);
8016                         wait_time += LPFC_XRI_EXCH_BUSY_WAIT_T2;
8017                 } else {
8018                         msleep(LPFC_XRI_EXCH_BUSY_WAIT_T1);
8019                         wait_time += LPFC_XRI_EXCH_BUSY_WAIT_T1;
8020                 }
8021                 fcp_xri_cmpl =
8022                         list_empty(&phba->sli4_hba.lpfc_abts_scsi_buf_list);
8023                 els_xri_cmpl =
8024                         list_empty(&phba->sli4_hba.lpfc_abts_els_sgl_list);
8025         }
8026 }
8027
8028 /**
8029  * lpfc_sli4_hba_unset - Unset the fcoe hba
8030  * @phba: Pointer to HBA context object.
8031  *
8032  * This function is called in the SLI4 code path to reset the HBA's FCoE
8033  * function. The caller is not required to hold any lock. This routine
8034  * issues PCI function reset mailbox command to reset the FCoE function.
8035  * At the end of the function, it calls lpfc_hba_down_post function to
8036  * free any pending commands.
8037  **/
8038 static void
8039 lpfc_sli4_hba_unset(struct lpfc_hba *phba)
8040 {
8041         int wait_cnt = 0;
8042         LPFC_MBOXQ_t *mboxq;
8043         struct pci_dev *pdev = phba->pcidev;
8044
8045         lpfc_stop_hba_timers(phba);
8046         phba->sli4_hba.intr_enable = 0;
8047
8048         /*
8049          * Gracefully wait out the potential current outstanding asynchronous
8050          * mailbox command.
8051          */
8052
8053         /* First, block any pending async mailbox command from posted */
8054         spin_lock_irq(&phba->hbalock);
8055         phba->sli.sli_flag |= LPFC_SLI_ASYNC_MBX_BLK;
8056         spin_unlock_irq(&phba->hbalock);
8057         /* Now, trying to wait it out if we can */
8058         while (phba->sli.sli_flag & LPFC_SLI_MBOX_ACTIVE) {
8059                 msleep(10);
8060                 if (++wait_cnt > LPFC_ACTIVE_MBOX_WAIT_CNT)
8061                         break;
8062         }
8063         /* Forcefully release the outstanding mailbox command if timed out */
8064         if (phba->sli.sli_flag & LPFC_SLI_MBOX_ACTIVE) {
8065                 spin_lock_irq(&phba->hbalock);
8066                 mboxq = phba->sli.mbox_active;
8067                 mboxq->u.mb.mbxStatus = MBX_NOT_FINISHED;
8068                 __lpfc_mbox_cmpl_put(phba, mboxq);
8069                 phba->sli.sli_flag &= ~LPFC_SLI_MBOX_ACTIVE;
8070                 phba->sli.mbox_active = NULL;
8071                 spin_unlock_irq(&phba->hbalock);
8072         }
8073
8074         /* Abort all iocbs associated with the hba */
8075         lpfc_sli_hba_iocb_abort(phba);
8076
8077         /* Wait for completion of device XRI exchange busy */
8078         lpfc_sli4_xri_exchange_busy_wait(phba);
8079
8080         /* Disable PCI subsystem interrupt */
8081         lpfc_sli4_disable_intr(phba);
8082
8083         /* Disable SR-IOV if enabled */
8084         if (phba->cfg_sriov_nr_virtfn)
8085                 pci_disable_sriov(pdev);
8086
8087         /* Stop kthread signal shall trigger work_done one more time */
8088         kthread_stop(phba->worker_thread);
8089
8090         /* Reset SLI4 HBA FCoE function */
8091         lpfc_pci_function_reset(phba);
8092
8093         /* Stop the SLI4 device port */
8094         phba->pport->work_port_events = 0;
8095 }
8096
8097  /**
8098  * lpfc_pc_sli4_params_get - Get the SLI4_PARAMS port capabilities.
8099  * @phba: Pointer to HBA context object.
8100  * @mboxq: Pointer to the mailboxq memory for the mailbox command response.
8101  *
8102  * This function is called in the SLI4 code path to read the port's
8103  * sli4 capabilities.
8104  *
8105  * This function may be be called from any context that can block-wait
8106  * for the completion.  The expectation is that this routine is called
8107  * typically from probe_one or from the online routine.
8108  **/
8109 int
8110 lpfc_pc_sli4_params_get(struct lpfc_hba *phba, LPFC_MBOXQ_t *mboxq)
8111 {
8112         int rc;
8113         struct lpfc_mqe *mqe;
8114         struct lpfc_pc_sli4_params *sli4_params;
8115         uint32_t mbox_tmo;
8116
8117         rc = 0;
8118         mqe = &mboxq->u.mqe;
8119
8120         /* Read the port's SLI4 Parameters port capabilities */
8121         lpfc_pc_sli4_params(mboxq);
8122         if (!phba->sli4_hba.intr_enable)
8123                 rc = lpfc_sli_issue_mbox(phba, mboxq, MBX_POLL);
8124         else {
8125                 mbox_tmo = lpfc_mbox_tmo_val(phba, MBX_PORT_CAPABILITIES);
8126                 rc = lpfc_sli_issue_mbox_wait(phba, mboxq, mbox_tmo);
8127         }
8128
8129         if (unlikely(rc))
8130                 return 1;
8131
8132         sli4_params = &phba->sli4_hba.pc_sli4_params;
8133         sli4_params->if_type = bf_get(if_type, &mqe->un.sli4_params);
8134         sli4_params->sli_rev = bf_get(sli_rev, &mqe->un.sli4_params);
8135         sli4_params->sli_family = bf_get(sli_family, &mqe->un.sli4_params);
8136         sli4_params->featurelevel_1 = bf_get(featurelevel_1,
8137                                              &mqe->un.sli4_params);
8138         sli4_params->featurelevel_2 = bf_get(featurelevel_2,
8139                                              &mqe->un.sli4_params);
8140         sli4_params->proto_types = mqe->un.sli4_params.word3;
8141         sli4_params->sge_supp_len = mqe->un.sli4_params.sge_supp_len;
8142         sli4_params->if_page_sz = bf_get(if_page_sz, &mqe->un.sli4_params);
8143         sli4_params->rq_db_window = bf_get(rq_db_window, &mqe->un.sli4_params);
8144         sli4_params->loopbk_scope = bf_get(loopbk_scope, &mqe->un.sli4_params);
8145         sli4_params->eq_pages_max = bf_get(eq_pages, &mqe->un.sli4_params);
8146         sli4_params->eqe_size = bf_get(eqe_size, &mqe->un.sli4_params);
8147         sli4_params->cq_pages_max = bf_get(cq_pages, &mqe->un.sli4_params);
8148         sli4_params->cqe_size = bf_get(cqe_size, &mqe->un.sli4_params);
8149         sli4_params->mq_pages_max = bf_get(mq_pages, &mqe->un.sli4_params);
8150         sli4_params->mqe_size = bf_get(mqe_size, &mqe->un.sli4_params);
8151         sli4_params->mq_elem_cnt = bf_get(mq_elem_cnt, &mqe->un.sli4_params);
8152         sli4_params->wq_pages_max = bf_get(wq_pages, &mqe->un.sli4_params);
8153         sli4_params->wqe_size = bf_get(wqe_size, &mqe->un.sli4_params);
8154         sli4_params->rq_pages_max = bf_get(rq_pages, &mqe->un.sli4_params);
8155         sli4_params->rqe_size = bf_get(rqe_size, &mqe->un.sli4_params);
8156         sli4_params->hdr_pages_max = bf_get(hdr_pages, &mqe->un.sli4_params);
8157         sli4_params->hdr_size = bf_get(hdr_size, &mqe->un.sli4_params);
8158         sli4_params->hdr_pp_align = bf_get(hdr_pp_align, &mqe->un.sli4_params);
8159         sli4_params->sgl_pages_max = bf_get(sgl_pages, &mqe->un.sli4_params);
8160         sli4_params->sgl_pp_align = bf_get(sgl_pp_align, &mqe->un.sli4_params);
8161
8162         /* Make sure that sge_supp_len can be handled by the driver */
8163         if (sli4_params->sge_supp_len > LPFC_MAX_SGE_SIZE)
8164                 sli4_params->sge_supp_len = LPFC_MAX_SGE_SIZE;
8165
8166         return rc;
8167 }
8168
8169 /**
8170  * lpfc_get_sli4_parameters - Get the SLI4 Config PARAMETERS.
8171  * @phba: Pointer to HBA context object.
8172  * @mboxq: Pointer to the mailboxq memory for the mailbox command response.
8173  *
8174  * This function is called in the SLI4 code path to read the port's
8175  * sli4 capabilities.
8176  *
8177  * This function may be be called from any context that can block-wait
8178  * for the completion.  The expectation is that this routine is called
8179  * typically from probe_one or from the online routine.
8180  **/
8181 int
8182 lpfc_get_sli4_parameters(struct lpfc_hba *phba, LPFC_MBOXQ_t *mboxq)
8183 {
8184         int rc;
8185         struct lpfc_mqe *mqe = &mboxq->u.mqe;
8186         struct lpfc_pc_sli4_params *sli4_params;
8187         int length;
8188         struct lpfc_sli4_parameters *mbx_sli4_parameters;
8189
8190         /*
8191          * By default, the driver assumes the SLI4 port requires RPI
8192          * header postings.  The SLI4_PARAM response will correct this
8193          * assumption.
8194          */
8195         phba->sli4_hba.rpi_hdrs_in_use = 1;
8196
8197         /* Read the port's SLI4 Config Parameters */
8198         length = (sizeof(struct lpfc_mbx_get_sli4_parameters) -
8199                   sizeof(struct lpfc_sli4_cfg_mhdr));
8200         lpfc_sli4_config(phba, mboxq, LPFC_MBOX_SUBSYSTEM_COMMON,
8201                          LPFC_MBOX_OPCODE_GET_SLI4_PARAMETERS,
8202                          length, LPFC_SLI4_MBX_EMBED);
8203         if (!phba->sli4_hba.intr_enable)
8204                 rc = lpfc_sli_issue_mbox(phba, mboxq, MBX_POLL);
8205         else
8206                 rc = lpfc_sli_issue_mbox_wait(phba, mboxq,
8207                         lpfc_mbox_tmo_val(phba, MBX_SLI4_CONFIG));
8208         if (unlikely(rc))
8209                 return rc;
8210         sli4_params = &phba->sli4_hba.pc_sli4_params;
8211         mbx_sli4_parameters = &mqe->un.get_sli4_parameters.sli4_parameters;
8212         sli4_params->if_type = bf_get(cfg_if_type, mbx_sli4_parameters);
8213         sli4_params->sli_rev = bf_get(cfg_sli_rev, mbx_sli4_parameters);
8214         sli4_params->sli_family = bf_get(cfg_sli_family, mbx_sli4_parameters);
8215         sli4_params->featurelevel_1 = bf_get(cfg_sli_hint_1,
8216                                              mbx_sli4_parameters);
8217         sli4_params->featurelevel_2 = bf_get(cfg_sli_hint_2,
8218                                              mbx_sli4_parameters);
8219         if (bf_get(cfg_phwq, mbx_sli4_parameters))
8220                 phba->sli3_options |= LPFC_SLI4_PHWQ_ENABLED;
8221         else
8222                 phba->sli3_options &= ~LPFC_SLI4_PHWQ_ENABLED;
8223         sli4_params->sge_supp_len = mbx_sli4_parameters->sge_supp_len;
8224         sli4_params->loopbk_scope = bf_get(loopbk_scope, mbx_sli4_parameters);
8225         sli4_params->cqv = bf_get(cfg_cqv, mbx_sli4_parameters);
8226         sli4_params->mqv = bf_get(cfg_mqv, mbx_sli4_parameters);
8227         sli4_params->wqv = bf_get(cfg_wqv, mbx_sli4_parameters);
8228         sli4_params->rqv = bf_get(cfg_rqv, mbx_sli4_parameters);
8229         sli4_params->sgl_pages_max = bf_get(cfg_sgl_page_cnt,
8230                                             mbx_sli4_parameters);
8231         sli4_params->sgl_pp_align = bf_get(cfg_sgl_pp_align,
8232                                            mbx_sli4_parameters);
8233         phba->sli4_hba.extents_in_use = bf_get(cfg_ext, mbx_sli4_parameters);
8234         phba->sli4_hba.rpi_hdrs_in_use = bf_get(cfg_hdrr, mbx_sli4_parameters);
8235
8236         /* Make sure that sge_supp_len can be handled by the driver */
8237         if (sli4_params->sge_supp_len > LPFC_MAX_SGE_SIZE)
8238                 sli4_params->sge_supp_len = LPFC_MAX_SGE_SIZE;
8239
8240         return 0;
8241 }
8242
8243 /**
8244  * lpfc_pci_probe_one_s3 - PCI probe func to reg SLI-3 device to PCI subsystem.
8245  * @pdev: pointer to PCI device
8246  * @pid: pointer to PCI device identifier
8247  *
8248  * This routine is to be called to attach a device with SLI-3 interface spec
8249  * to the PCI subsystem. When an Emulex HBA with SLI-3 interface spec is
8250  * presented on PCI bus, the kernel PCI subsystem looks at PCI device-specific
8251  * information of the device and driver to see if the driver state that it can
8252  * support this kind of device. If the match is successful, the driver core
8253  * invokes this routine. If this routine determines it can claim the HBA, it
8254  * does all the initialization that it needs to do to handle the HBA properly.
8255  *
8256  * Return code
8257  *      0 - driver can claim the device
8258  *      negative value - driver can not claim the device
8259  **/
8260 static int __devinit
8261 lpfc_pci_probe_one_s3(struct pci_dev *pdev, const struct pci_device_id *pid)
8262 {
8263         struct lpfc_hba   *phba;
8264         struct lpfc_vport *vport = NULL;
8265         struct Scsi_Host  *shost = NULL;
8266         int error;
8267         uint32_t cfg_mode, intr_mode;
8268
8269         /* Allocate memory for HBA structure */
8270         phba = lpfc_hba_alloc(pdev);
8271         if (!phba)
8272                 return -ENOMEM;
8273
8274         /* Perform generic PCI device enabling operation */
8275         error = lpfc_enable_pci_dev(phba);
8276         if (error) {
8277                 lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
8278                                 "1401 Failed to enable pci device.\n");
8279                 goto out_free_phba;
8280         }
8281
8282         /* Set up SLI API function jump table for PCI-device group-0 HBAs */
8283         error = lpfc_api_table_setup(phba, LPFC_PCI_DEV_LP);
8284         if (error)
8285                 goto out_disable_pci_dev;
8286
8287         /* Set up SLI-3 specific device PCI memory space */
8288         error = lpfc_sli_pci_mem_setup(phba);
8289         if (error) {
8290                 lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
8291                                 "1402 Failed to set up pci memory space.\n");
8292                 goto out_disable_pci_dev;
8293         }
8294
8295         /* Set up phase-1 common device driver resources */
8296         error = lpfc_setup_driver_resource_phase1(phba);
8297         if (error) {
8298                 lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
8299                                 "1403 Failed to set up driver resource.\n");
8300                 goto out_unset_pci_mem_s3;
8301         }
8302
8303         /* Set up SLI-3 specific device driver resources */
8304         error = lpfc_sli_driver_resource_setup(phba);
8305         if (error) {
8306                 lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
8307                                 "1404 Failed to set up driver resource.\n");
8308                 goto out_unset_pci_mem_s3;
8309         }
8310
8311         /* Initialize and populate the iocb list per host */
8312         error = lpfc_init_iocb_list(phba, LPFC_IOCB_LIST_CNT);
8313         if (error) {
8314                 lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
8315                                 "1405 Failed to initialize iocb list.\n");
8316                 goto out_unset_driver_resource_s3;
8317         }
8318
8319         /* Set up common device driver resources */
8320         error = lpfc_setup_driver_resource_phase2(phba);
8321         if (error) {
8322                 lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
8323                                 "1406 Failed to set up driver resource.\n");
8324                 goto out_free_iocb_list;
8325         }
8326
8327         /* Create SCSI host to the physical port */
8328         error = lpfc_create_shost(phba);
8329         if (error) {
8330                 lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
8331                                 "1407 Failed to create scsi host.\n");
8332                 goto out_unset_driver_resource;
8333         }
8334
8335         /* Configure sysfs attributes */
8336         vport = phba->pport;
8337         error = lpfc_alloc_sysfs_attr(vport);
8338         if (error) {
8339                 lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
8340                                 "1476 Failed to allocate sysfs attr\n");
8341                 goto out_destroy_shost;
8342         }
8343
8344         shost = lpfc_shost_from_vport(vport); /* save shost for error cleanup */
8345         /* Now, trying to enable interrupt and bring up the device */
8346         cfg_mode = phba->cfg_use_msi;
8347         while (true) {
8348                 /* Put device to a known state before enabling interrupt */
8349                 lpfc_stop_port(phba);
8350                 /* Configure and enable interrupt */
8351                 intr_mode = lpfc_sli_enable_intr(phba, cfg_mode);
8352                 if (intr_mode == LPFC_INTR_ERROR) {
8353                         lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
8354                                         "0431 Failed to enable interrupt.\n");
8355                         error = -ENODEV;
8356                         goto out_free_sysfs_attr;
8357                 }
8358                 /* SLI-3 HBA setup */
8359                 if (lpfc_sli_hba_setup(phba)) {
8360                         lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
8361                                         "1477 Failed to set up hba\n");
8362                         error = -ENODEV;
8363                         goto out_remove_device;
8364                 }
8365
8366                 /* Wait 50ms for the interrupts of previous mailbox commands */
8367                 msleep(50);
8368                 /* Check active interrupts on message signaled interrupts */
8369                 if (intr_mode == 0 ||
8370                     phba->sli.slistat.sli_intr > LPFC_MSIX_VECTORS) {
8371                         /* Log the current active interrupt mode */
8372                         phba->intr_mode = intr_mode;
8373                         lpfc_log_intr_mode(phba, intr_mode);
8374                         break;
8375                 } else {
8376                         lpfc_printf_log(phba, KERN_INFO, LOG_INIT,
8377                                         "0447 Configure interrupt mode (%d) "
8378                                         "failed active interrupt test.\n",
8379                                         intr_mode);
8380                         /* Disable the current interrupt mode */
8381                         lpfc_sli_disable_intr(phba);
8382                         /* Try next level of interrupt mode */
8383                         cfg_mode = --intr_mode;
8384                 }
8385         }
8386
8387         /* Perform post initialization setup */
8388         lpfc_post_init_setup(phba);
8389
8390         /* Check if there are static vports to be created. */
8391         lpfc_create_static_vport(phba);
8392
8393         return 0;
8394
8395 out_remove_device:
8396         lpfc_unset_hba(phba);
8397 out_free_sysfs_attr:
8398         lpfc_free_sysfs_attr(vport);
8399 out_destroy_shost:
8400         lpfc_destroy_shost(phba);
8401 out_unset_driver_resource:
8402         lpfc_unset_driver_resource_phase2(phba);
8403 out_free_iocb_list:
8404         lpfc_free_iocb_list(phba);
8405 out_unset_driver_resource_s3:
8406         lpfc_sli_driver_resource_unset(phba);
8407 out_unset_pci_mem_s3:
8408         lpfc_sli_pci_mem_unset(phba);
8409 out_disable_pci_dev:
8410         lpfc_disable_pci_dev(phba);
8411         if (shost)
8412                 scsi_host_put(shost);
8413 out_free_phba:
8414         lpfc_hba_free(phba);
8415         return error;
8416 }
8417
8418 /**
8419  * lpfc_pci_remove_one_s3 - PCI func to unreg SLI-3 device from PCI subsystem.
8420  * @pdev: pointer to PCI device
8421  *
8422  * This routine is to be called to disattach a device with SLI-3 interface
8423  * spec from PCI subsystem. When an Emulex HBA with SLI-3 interface spec is
8424  * removed from PCI bus, it performs all the necessary cleanup for the HBA
8425  * device to be removed from the PCI subsystem properly.
8426  **/
8427 static void __devexit
8428 lpfc_pci_remove_one_s3(struct pci_dev *pdev)
8429 {
8430         struct Scsi_Host  *shost = pci_get_drvdata(pdev);
8431         struct lpfc_vport *vport = (struct lpfc_vport *) shost->hostdata;
8432         struct lpfc_vport **vports;
8433         struct lpfc_hba   *phba = vport->phba;
8434         int i;
8435         int bars = pci_select_bars(pdev, IORESOURCE_MEM);
8436
8437         spin_lock_irq(&phba->hbalock);
8438         vport->load_flag |= FC_UNLOADING;
8439         spin_unlock_irq(&phba->hbalock);
8440
8441         lpfc_free_sysfs_attr(vport);
8442
8443         /* Release all the vports against this physical port */
8444         vports = lpfc_create_vport_work_array(phba);
8445         if (vports != NULL)
8446                 for (i = 1; i <= phba->max_vports && vports[i] != NULL; i++)
8447                         fc_vport_terminate(vports[i]->fc_vport);
8448         lpfc_destroy_vport_work_array(phba, vports);
8449
8450         /* Remove FC host and then SCSI host with the physical port */
8451         fc_remove_host(shost);
8452         scsi_remove_host(shost);
8453         lpfc_cleanup(vport);
8454
8455         /*
8456          * Bring down the SLI Layer. This step disable all interrupts,
8457          * clears the rings, discards all mailbox commands, and resets
8458          * the HBA.
8459          */
8460
8461         /* HBA interrupt will be disabled after this call */
8462         lpfc_sli_hba_down(phba);
8463         /* Stop kthread signal shall trigger work_done one more time */
8464         kthread_stop(phba->worker_thread);
8465         /* Final cleanup of txcmplq and reset the HBA */
8466         lpfc_sli_brdrestart(phba);
8467
8468         lpfc_stop_hba_timers(phba);
8469         spin_lock_irq(&phba->hbalock);
8470         list_del_init(&vport->listentry);
8471         spin_unlock_irq(&phba->hbalock);
8472
8473         lpfc_debugfs_terminate(vport);
8474
8475         /* Disable SR-IOV if enabled */
8476         if (phba->cfg_sriov_nr_virtfn)
8477                 pci_disable_sriov(pdev);
8478
8479         /* Disable interrupt */
8480         lpfc_sli_disable_intr(phba);
8481
8482         pci_set_drvdata(pdev, NULL);
8483         scsi_host_put(shost);
8484
8485         /*
8486          * Call scsi_free before mem_free since scsi bufs are released to their
8487          * corresponding pools here.
8488          */
8489         lpfc_scsi_free(phba);
8490         lpfc_mem_free_all(phba);
8491
8492         dma_free_coherent(&pdev->dev, lpfc_sli_hbq_size(),
8493                           phba->hbqslimp.virt, phba->hbqslimp.phys);
8494
8495         /* Free resources associated with SLI2 interface */
8496         dma_free_coherent(&pdev->dev, SLI2_SLIM_SIZE,
8497                           phba->slim2p.virt, phba->slim2p.phys);
8498
8499         /* unmap adapter SLIM and Control Registers */
8500         iounmap(phba->ctrl_regs_memmap_p);
8501         iounmap(phba->slim_memmap_p);
8502
8503         lpfc_hba_free(phba);
8504
8505         pci_release_selected_regions(pdev, bars);
8506         pci_disable_device(pdev);
8507 }
8508
8509 /**
8510  * lpfc_pci_suspend_one_s3 - PCI func to suspend SLI-3 device for power mgmnt
8511  * @pdev: pointer to PCI device
8512  * @msg: power management message
8513  *
8514  * This routine is to be called from the kernel's PCI subsystem to support
8515  * system Power Management (PM) to device with SLI-3 interface spec. When
8516  * PM invokes this method, it quiesces the device by stopping the driver's
8517  * worker thread for the device, turning off device's interrupt and DMA,
8518  * and bring the device offline. Note that as the driver implements the
8519  * minimum PM requirements to a power-aware driver's PM support for the
8520  * suspend/resume -- all the possible PM messages (SUSPEND, HIBERNATE, FREEZE)
8521  * to the suspend() method call will be treated as SUSPEND and the driver will
8522  * fully reinitialize its device during resume() method call, the driver will
8523  * set device to PCI_D3hot state in PCI config space instead of setting it
8524  * according to the @msg provided by the PM.
8525  *
8526  * Return code
8527  *      0 - driver suspended the device
8528  *      Error otherwise
8529  **/
8530 static int
8531 lpfc_pci_suspend_one_s3(struct pci_dev *pdev, pm_message_t msg)
8532 {
8533         struct Scsi_Host *shost = pci_get_drvdata(pdev);
8534         struct lpfc_hba *phba = ((struct lpfc_vport *)shost->hostdata)->phba;
8535
8536         lpfc_printf_log(phba, KERN_INFO, LOG_INIT,
8537                         "0473 PCI device Power Management suspend.\n");
8538
8539         /* Bring down the device */
8540         lpfc_offline_prep(phba);
8541         lpfc_offline(phba);
8542         kthread_stop(phba->worker_thread);
8543
8544         /* Disable interrupt from device */
8545         lpfc_sli_disable_intr(phba);
8546
8547         /* Save device state to PCI config space */
8548         pci_save_state(pdev);
8549         pci_set_power_state(pdev, PCI_D3hot);
8550
8551         return 0;
8552 }
8553
8554 /**
8555  * lpfc_pci_resume_one_s3 - PCI func to resume SLI-3 device for power mgmnt
8556  * @pdev: pointer to PCI device
8557  *
8558  * This routine is to be called from the kernel's PCI subsystem to support
8559  * system Power Management (PM) to device with SLI-3 interface spec. When PM
8560  * invokes this method, it restores the device's PCI config space state and
8561  * fully reinitializes the device and brings it online. Note that as the
8562  * driver implements the minimum PM requirements to a power-aware driver's
8563  * PM for suspend/resume -- all the possible PM messages (SUSPEND, HIBERNATE,
8564  * FREEZE) to the suspend() method call will be treated as SUSPEND and the
8565  * driver will fully reinitialize its device during resume() method call,
8566  * the device will be set to PCI_D0 directly in PCI config space before
8567  * restoring the state.
8568  *
8569  * Return code
8570  *      0 - driver suspended the device
8571  *      Error otherwise
8572  **/
8573 static int
8574 lpfc_pci_resume_one_s3(struct pci_dev *pdev)
8575 {
8576         struct Scsi_Host *shost = pci_get_drvdata(pdev);
8577         struct lpfc_hba *phba = ((struct lpfc_vport *)shost->hostdata)->phba;
8578         uint32_t intr_mode;
8579         int error;
8580
8581         lpfc_printf_log(phba, KERN_INFO, LOG_INIT,
8582                         "0452 PCI device Power Management resume.\n");
8583
8584         /* Restore device state from PCI config space */
8585         pci_set_power_state(pdev, PCI_D0);
8586         pci_restore_state(pdev);
8587
8588         /*
8589          * As the new kernel behavior of pci_restore_state() API call clears
8590          * device saved_state flag, need to save the restored state again.
8591          */
8592         pci_save_state(pdev);
8593
8594         if (pdev->is_busmaster)
8595                 pci_set_master(pdev);
8596
8597         /* Startup the kernel thread for this host adapter. */
8598         phba->worker_thread = kthread_run(lpfc_do_work, phba,
8599                                         "lpfc_worker_%d", phba->brd_no);
8600         if (IS_ERR(phba->worker_thread)) {
8601                 error = PTR_ERR(phba->worker_thread);
8602                 lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
8603                                 "0434 PM resume failed to start worker "
8604                                 "thread: error=x%x.\n", error);
8605                 return error;
8606         }
8607
8608         /* Configure and enable interrupt */
8609         intr_mode = lpfc_sli_enable_intr(phba, phba->intr_mode);
8610         if (intr_mode == LPFC_INTR_ERROR) {
8611                 lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
8612                                 "0430 PM resume Failed to enable interrupt\n");
8613                 return -EIO;
8614         } else
8615                 phba->intr_mode = intr_mode;
8616
8617         /* Restart HBA and bring it online */
8618         lpfc_sli_brdrestart(phba);
8619         lpfc_online(phba);
8620
8621         /* Log the current active interrupt mode */
8622         lpfc_log_intr_mode(phba, phba->intr_mode);
8623
8624         return 0;
8625 }
8626
8627 /**
8628  * lpfc_sli_prep_dev_for_recover - Prepare SLI3 device for pci slot recover
8629  * @phba: pointer to lpfc hba data structure.
8630  *
8631  * This routine is called to prepare the SLI3 device for PCI slot recover. It
8632  * aborts all the outstanding SCSI I/Os to the pci device.
8633  **/
8634 static void
8635 lpfc_sli_prep_dev_for_recover(struct lpfc_hba *phba)
8636 {
8637         struct lpfc_sli *psli = &phba->sli;
8638         struct lpfc_sli_ring  *pring;
8639
8640         lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
8641                         "2723 PCI channel I/O abort preparing for recovery\n");
8642
8643         /*
8644          * There may be errored I/Os through HBA, abort all I/Os on txcmplq
8645          * and let the SCSI mid-layer to retry them to recover.
8646          */
8647         pring = &psli->ring[psli->fcp_ring];
8648         lpfc_sli_abort_iocb_ring(phba, pring);
8649 }
8650
8651 /**
8652  * lpfc_sli_prep_dev_for_reset - Prepare SLI3 device for pci slot reset
8653  * @phba: pointer to lpfc hba data structure.
8654  *
8655  * This routine is called to prepare the SLI3 device for PCI slot reset. It
8656  * disables the device interrupt and pci device, and aborts the internal FCP
8657  * pending I/Os.
8658  **/
8659 static void
8660 lpfc_sli_prep_dev_for_reset(struct lpfc_hba *phba)
8661 {
8662         lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
8663                         "2710 PCI channel disable preparing for reset\n");
8664
8665         /* Block any management I/Os to the device */
8666         lpfc_block_mgmt_io(phba);
8667
8668         /* Block all SCSI devices' I/Os on the host */
8669         lpfc_scsi_dev_block(phba);
8670
8671         /* stop all timers */
8672         lpfc_stop_hba_timers(phba);
8673
8674         /* Disable interrupt and pci device */
8675         lpfc_sli_disable_intr(phba);
8676         pci_disable_device(phba->pcidev);
8677
8678         /* Flush all driver's outstanding SCSI I/Os as we are to reset */
8679         lpfc_sli_flush_fcp_rings(phba);
8680 }
8681
8682 /**
8683  * lpfc_sli_prep_dev_for_perm_failure - Prepare SLI3 dev for pci slot disable
8684  * @phba: pointer to lpfc hba data structure.
8685  *
8686  * This routine is called to prepare the SLI3 device for PCI slot permanently
8687  * disabling. It blocks the SCSI transport layer traffic and flushes the FCP
8688  * pending I/Os.
8689  **/
8690 static void
8691 lpfc_sli_prep_dev_for_perm_failure(struct lpfc_hba *phba)
8692 {
8693         lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
8694                         "2711 PCI channel permanent disable for failure\n");
8695         /* Block all SCSI devices' I/Os on the host */
8696         lpfc_scsi_dev_block(phba);
8697
8698         /* stop all timers */
8699         lpfc_stop_hba_timers(phba);
8700
8701         /* Clean up all driver's outstanding SCSI I/Os */
8702         lpfc_sli_flush_fcp_rings(phba);
8703 }
8704
8705 /**
8706  * lpfc_io_error_detected_s3 - Method for handling SLI-3 device PCI I/O error
8707  * @pdev: pointer to PCI device.
8708  * @state: the current PCI connection state.
8709  *
8710  * This routine is called from the PCI subsystem for I/O error handling to
8711  * device with SLI-3 interface spec. This function is called by the PCI
8712  * subsystem after a PCI bus error affecting this device has been detected.
8713  * When this function is invoked, it will need to stop all the I/Os and
8714  * interrupt(s) to the device. Once that is done, it will return
8715  * PCI_ERS_RESULT_NEED_RESET for the PCI subsystem to perform proper recovery
8716  * as desired.
8717  *
8718  * Return codes
8719  *      PCI_ERS_RESULT_CAN_RECOVER - can be recovered with reset_link
8720  *      PCI_ERS_RESULT_NEED_RESET - need to reset before recovery
8721  *      PCI_ERS_RESULT_DISCONNECT - device could not be recovered
8722  **/
8723 static pci_ers_result_t
8724 lpfc_io_error_detected_s3(struct pci_dev *pdev, pci_channel_state_t state)
8725 {
8726         struct Scsi_Host *shost = pci_get_drvdata(pdev);
8727         struct lpfc_hba *phba = ((struct lpfc_vport *)shost->hostdata)->phba;
8728
8729         switch (state) {
8730         case pci_channel_io_normal:
8731                 /* Non-fatal error, prepare for recovery */
8732                 lpfc_sli_prep_dev_for_recover(phba);
8733                 return PCI_ERS_RESULT_CAN_RECOVER;
8734         case pci_channel_io_frozen:
8735                 /* Fatal error, prepare for slot reset */
8736                 lpfc_sli_prep_dev_for_reset(phba);
8737                 return PCI_ERS_RESULT_NEED_RESET;
8738         case pci_channel_io_perm_failure:
8739                 /* Permanent failure, prepare for device down */
8740                 lpfc_sli_prep_dev_for_perm_failure(phba);
8741                 return PCI_ERS_RESULT_DISCONNECT;
8742         default:
8743                 /* Unknown state, prepare and request slot reset */
8744                 lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
8745                                 "0472 Unknown PCI error state: x%x\n", state);
8746                 lpfc_sli_prep_dev_for_reset(phba);
8747                 return PCI_ERS_RESULT_NEED_RESET;
8748         }
8749 }
8750
8751 /**
8752  * lpfc_io_slot_reset_s3 - Method for restarting PCI SLI-3 device from scratch.
8753  * @pdev: pointer to PCI device.
8754  *
8755  * This routine is called from the PCI subsystem for error handling to
8756  * device with SLI-3 interface spec. This is called after PCI bus has been
8757  * reset to restart the PCI card from scratch, as if from a cold-boot.
8758  * During the PCI subsystem error recovery, after driver returns
8759  * PCI_ERS_RESULT_NEED_RESET, the PCI subsystem will perform proper error
8760  * recovery and then call this routine before calling the .resume method
8761  * to recover the device. This function will initialize the HBA device,
8762  * enable the interrupt, but it will just put the HBA to offline state
8763  * without passing any I/O traffic.
8764  *
8765  * Return codes
8766  *      PCI_ERS_RESULT_RECOVERED - the device has been recovered
8767  *      PCI_ERS_RESULT_DISCONNECT - device could not be recovered
8768  */
8769 static pci_ers_result_t
8770 lpfc_io_slot_reset_s3(struct pci_dev *pdev)
8771 {
8772         struct Scsi_Host *shost = pci_get_drvdata(pdev);
8773         struct lpfc_hba *phba = ((struct lpfc_vport *)shost->hostdata)->phba;
8774         struct lpfc_sli *psli = &phba->sli;
8775         uint32_t intr_mode;
8776
8777         dev_printk(KERN_INFO, &pdev->dev, "recovering from a slot reset.\n");
8778         if (pci_enable_device_mem(pdev)) {
8779                 printk(KERN_ERR "lpfc: Cannot re-enable "
8780                         "PCI device after reset.\n");
8781                 return PCI_ERS_RESULT_DISCONNECT;
8782         }
8783
8784         pci_restore_state(pdev);
8785
8786         /*
8787          * As the new kernel behavior of pci_restore_state() API call clears
8788          * device saved_state flag, need to save the restored state again.
8789          */
8790         pci_save_state(pdev);
8791
8792         if (pdev->is_busmaster)
8793                 pci_set_master(pdev);
8794
8795         spin_lock_irq(&phba->hbalock);
8796         psli->sli_flag &= ~LPFC_SLI_ACTIVE;
8797         spin_unlock_irq(&phba->hbalock);
8798
8799         /* Configure and enable interrupt */
8800         intr_mode = lpfc_sli_enable_intr(phba, phba->intr_mode);
8801         if (intr_mode == LPFC_INTR_ERROR) {
8802                 lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
8803                                 "0427 Cannot re-enable interrupt after "
8804                                 "slot reset.\n");
8805                 return PCI_ERS_RESULT_DISCONNECT;
8806         } else
8807                 phba->intr_mode = intr_mode;
8808
8809         /* Take device offline, it will perform cleanup */
8810         lpfc_offline_prep(phba);
8811         lpfc_offline(phba);
8812         lpfc_sli_brdrestart(phba);
8813
8814         /* Log the current active interrupt mode */
8815         lpfc_log_intr_mode(phba, phba->intr_mode);
8816
8817         return PCI_ERS_RESULT_RECOVERED;
8818 }
8819
8820 /**
8821  * lpfc_io_resume_s3 - Method for resuming PCI I/O operation on SLI-3 device.
8822  * @pdev: pointer to PCI device
8823  *
8824  * This routine is called from the PCI subsystem for error handling to device
8825  * with SLI-3 interface spec. It is called when kernel error recovery tells
8826  * the lpfc driver that it is ok to resume normal PCI operation after PCI bus
8827  * error recovery. After this call, traffic can start to flow from this device
8828  * again.
8829  */
8830 static void
8831 lpfc_io_resume_s3(struct pci_dev *pdev)
8832 {
8833         struct Scsi_Host *shost = pci_get_drvdata(pdev);
8834         struct lpfc_hba *phba = ((struct lpfc_vport *)shost->hostdata)->phba;
8835
8836         /* Bring device online, it will be no-op for non-fatal error resume */
8837         lpfc_online(phba);
8838
8839         /* Clean up Advanced Error Reporting (AER) if needed */
8840         if (phba->hba_flag & HBA_AER_ENABLED)
8841                 pci_cleanup_aer_uncorrect_error_status(pdev);
8842 }
8843
8844 /**
8845  * lpfc_sli4_get_els_iocb_cnt - Calculate the # of ELS IOCBs to reserve
8846  * @phba: pointer to lpfc hba data structure.
8847  *
8848  * returns the number of ELS/CT IOCBs to reserve
8849  **/
8850 int
8851 lpfc_sli4_get_els_iocb_cnt(struct lpfc_hba *phba)
8852 {
8853         int max_xri = phba->sli4_hba.max_cfg_param.max_xri;
8854
8855         if (phba->sli_rev == LPFC_SLI_REV4) {
8856                 if (max_xri <= 100)
8857                         return 10;
8858                 else if (max_xri <= 256)
8859                         return 25;
8860                 else if (max_xri <= 512)
8861                         return 50;
8862                 else if (max_xri <= 1024)
8863                         return 100;
8864                 else
8865                         return 150;
8866         } else
8867                 return 0;
8868 }
8869
8870 /**
8871  * lpfc_write_firmware - attempt to write a firmware image to the port
8872  * @phba: pointer to lpfc hba data structure.
8873  * @fw: pointer to firmware image returned from request_firmware.
8874  *
8875  * returns the number of bytes written if write is successful.
8876  * returns a negative error value if there were errors.
8877  * returns 0 if firmware matches currently active firmware on port.
8878  **/
8879 int
8880 lpfc_write_firmware(struct lpfc_hba *phba, const struct firmware *fw)
8881 {
8882         char fwrev[32];
8883         struct lpfc_grp_hdr *image = (struct lpfc_grp_hdr *)fw->data;
8884         struct list_head dma_buffer_list;
8885         int i, rc = 0;
8886         struct lpfc_dmabuf *dmabuf, *next;
8887         uint32_t offset = 0, temp_offset = 0;
8888
8889         INIT_LIST_HEAD(&dma_buffer_list);
8890         if ((image->magic_number != LPFC_GROUP_OJECT_MAGIC_NUM) ||
8891             (bf_get(lpfc_grp_hdr_file_type, image) != LPFC_FILE_TYPE_GROUP) ||
8892             (bf_get(lpfc_grp_hdr_id, image) != LPFC_FILE_ID_GROUP) ||
8893             (image->size != fw->size)) {
8894                 lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
8895                                 "3022 Invalid FW image found. "
8896                                 "Magic:%d Type:%x ID:%x\n",
8897                                 image->magic_number,
8898                                 bf_get(lpfc_grp_hdr_file_type, image),
8899                                 bf_get(lpfc_grp_hdr_id, image));
8900                 return -EINVAL;
8901         }
8902         lpfc_decode_firmware_rev(phba, fwrev, 1);
8903         if (strncmp(fwrev, image->revision, strnlen(image->revision, 16))) {
8904                 lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
8905                                 "3023 Updating Firmware. Current Version:%s "
8906                                 "New Version:%s\n",
8907                                 fwrev, image->revision);
8908                 for (i = 0; i < LPFC_MBX_WR_CONFIG_MAX_BDE; i++) {
8909                         dmabuf = kzalloc(sizeof(struct lpfc_dmabuf),
8910                                          GFP_KERNEL);
8911                         if (!dmabuf) {
8912                                 rc = -ENOMEM;
8913                                 goto out;
8914                         }
8915                         dmabuf->virt = dma_alloc_coherent(&phba->pcidev->dev,
8916                                                           SLI4_PAGE_SIZE,
8917                                                           &dmabuf->phys,
8918                                                           GFP_KERNEL);
8919                         if (!dmabuf->virt) {
8920                                 kfree(dmabuf);
8921                                 rc = -ENOMEM;
8922                                 goto out;
8923                         }
8924                         list_add_tail(&dmabuf->list, &dma_buffer_list);
8925                 }
8926                 while (offset < fw->size) {
8927                         temp_offset = offset;
8928                         list_for_each_entry(dmabuf, &dma_buffer_list, list) {
8929                                 if (offset + SLI4_PAGE_SIZE > fw->size) {
8930                                         temp_offset += fw->size - offset;
8931                                         memcpy(dmabuf->virt,
8932                                                fw->data + temp_offset,
8933                                                fw->size - offset);
8934                                         break;
8935                                 }
8936                                 memcpy(dmabuf->virt, fw->data + temp_offset,
8937                                        SLI4_PAGE_SIZE);
8938                                 temp_offset += SLI4_PAGE_SIZE;
8939                         }
8940                         rc = lpfc_wr_object(phba, &dma_buffer_list,
8941                                     (fw->size - offset), &offset);
8942                         if (rc) {
8943                                 lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
8944                                                 "3024 Firmware update failed. "
8945                                                 "%d\n", rc);
8946                                 goto out;
8947                         }
8948                 }
8949                 rc = offset;
8950         }
8951 out:
8952         list_for_each_entry_safe(dmabuf, next, &dma_buffer_list, list) {
8953                 list_del(&dmabuf->list);
8954                 dma_free_coherent(&phba->pcidev->dev, SLI4_PAGE_SIZE,
8955                                   dmabuf->virt, dmabuf->phys);
8956                 kfree(dmabuf);
8957         }
8958         return rc;
8959 }
8960
8961 /**
8962  * lpfc_pci_probe_one_s4 - PCI probe func to reg SLI-4 device to PCI subsys
8963  * @pdev: pointer to PCI device
8964  * @pid: pointer to PCI device identifier
8965  *
8966  * This routine is called from the kernel's PCI subsystem to device with
8967  * SLI-4 interface spec. When an Emulex HBA with SLI-4 interface spec is
8968  * presented on PCI bus, the kernel PCI subsystem looks at PCI device-specific
8969  * information of the device and driver to see if the driver state that it
8970  * can support this kind of device. If the match is successful, the driver
8971  * core invokes this routine. If this routine determines it can claim the HBA,
8972  * it does all the initialization that it needs to do to handle the HBA
8973  * properly.
8974  *
8975  * Return code
8976  *      0 - driver can claim the device
8977  *      negative value - driver can not claim the device
8978  **/
8979 static int __devinit
8980 lpfc_pci_probe_one_s4(struct pci_dev *pdev, const struct pci_device_id *pid)
8981 {
8982         struct lpfc_hba   *phba;
8983         struct lpfc_vport *vport = NULL;
8984         struct Scsi_Host  *shost = NULL;
8985         int error;
8986         uint32_t cfg_mode, intr_mode;
8987         int mcnt;
8988         int adjusted_fcp_eq_count;
8989         int fcp_qidx;
8990         const struct firmware *fw;
8991         uint8_t file_name[16];
8992
8993         /* Allocate memory for HBA structure */
8994         phba = lpfc_hba_alloc(pdev);
8995         if (!phba)
8996                 return -ENOMEM;
8997
8998         /* Perform generic PCI device enabling operation */
8999         error = lpfc_enable_pci_dev(phba);
9000         if (error) {
9001                 lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
9002                                 "1409 Failed to enable pci device.\n");
9003                 goto out_free_phba;
9004         }
9005
9006         /* Set up SLI API function jump table for PCI-device group-1 HBAs */
9007         error = lpfc_api_table_setup(phba, LPFC_PCI_DEV_OC);
9008         if (error)
9009                 goto out_disable_pci_dev;
9010
9011         /* Set up SLI-4 specific device PCI memory space */
9012         error = lpfc_sli4_pci_mem_setup(phba);
9013         if (error) {
9014                 lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
9015                                 "1410 Failed to set up pci memory space.\n");
9016                 goto out_disable_pci_dev;
9017         }
9018
9019         /* Set up phase-1 common device driver resources */
9020         error = lpfc_setup_driver_resource_phase1(phba);
9021         if (error) {
9022                 lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
9023                                 "1411 Failed to set up driver resource.\n");
9024                 goto out_unset_pci_mem_s4;
9025         }
9026
9027         /* Set up SLI-4 Specific device driver resources */
9028         error = lpfc_sli4_driver_resource_setup(phba);
9029         if (error) {
9030                 lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
9031                                 "1412 Failed to set up driver resource.\n");
9032                 goto out_unset_pci_mem_s4;
9033         }
9034
9035         /* Initialize and populate the iocb list per host */
9036
9037         lpfc_printf_log(phba, KERN_INFO, LOG_INIT,
9038                         "2821 initialize iocb list %d.\n",
9039                         phba->cfg_iocb_cnt*1024);
9040         error = lpfc_init_iocb_list(phba, phba->cfg_iocb_cnt*1024);
9041
9042         if (error) {
9043                 lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
9044                                 "1413 Failed to initialize iocb list.\n");
9045                 goto out_unset_driver_resource_s4;
9046         }
9047
9048         INIT_LIST_HEAD(&phba->active_rrq_list);
9049
9050         /* Set up common device driver resources */
9051         error = lpfc_setup_driver_resource_phase2(phba);
9052         if (error) {
9053                 lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
9054                                 "1414 Failed to set up driver resource.\n");
9055                 goto out_free_iocb_list;
9056         }
9057
9058         /* Create SCSI host to the physical port */
9059         error = lpfc_create_shost(phba);
9060         if (error) {
9061                 lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
9062                                 "1415 Failed to create scsi host.\n");
9063                 goto out_unset_driver_resource;
9064         }
9065
9066         /* Configure sysfs attributes */
9067         vport = phba->pport;
9068         error = lpfc_alloc_sysfs_attr(vport);
9069         if (error) {
9070                 lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
9071                                 "1416 Failed to allocate sysfs attr\n");
9072                 goto out_destroy_shost;
9073         }
9074
9075         shost = lpfc_shost_from_vport(vport); /* save shost for error cleanup */
9076         /* Now, trying to enable interrupt and bring up the device */
9077         cfg_mode = phba->cfg_use_msi;
9078         while (true) {
9079                 /* Put device to a known state before enabling interrupt */
9080                 lpfc_stop_port(phba);
9081                 /* Configure and enable interrupt */
9082                 intr_mode = lpfc_sli4_enable_intr(phba, cfg_mode);
9083                 if (intr_mode == LPFC_INTR_ERROR) {
9084                         lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
9085                                         "0426 Failed to enable interrupt.\n");
9086                         error = -ENODEV;
9087                         goto out_free_sysfs_attr;
9088                 }
9089                 /* Default to single EQ for non-MSI-X */
9090                 if (phba->intr_type != MSIX)
9091                         adjusted_fcp_eq_count = 0;
9092                 else if (phba->sli4_hba.msix_vec_nr <
9093                                         phba->cfg_fcp_eq_count + 1)
9094                         adjusted_fcp_eq_count = phba->sli4_hba.msix_vec_nr - 1;
9095                 else
9096                         adjusted_fcp_eq_count = phba->cfg_fcp_eq_count;
9097                 /* Free unused EQs */
9098                 for (fcp_qidx = adjusted_fcp_eq_count;
9099                      fcp_qidx < phba->cfg_fcp_eq_count;
9100                      fcp_qidx++) {
9101                         lpfc_sli4_queue_free(phba->sli4_hba.fp_eq[fcp_qidx]);
9102                         /* do not delete the first fcp_cq */
9103                         if (fcp_qidx)
9104                                 lpfc_sli4_queue_free(
9105                                         phba->sli4_hba.fcp_cq[fcp_qidx]);
9106                 }
9107                 phba->cfg_fcp_eq_count = adjusted_fcp_eq_count;
9108                 /* Set up SLI-4 HBA */
9109                 if (lpfc_sli4_hba_setup(phba)) {
9110                         lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
9111                                         "1421 Failed to set up hba\n");
9112                         error = -ENODEV;
9113                         goto out_disable_intr;
9114                 }
9115
9116                 /* Send NOP mbx cmds for non-INTx mode active interrupt test */
9117                 if (intr_mode != 0)
9118                         mcnt = lpfc_sli4_send_nop_mbox_cmds(phba,
9119                                                             LPFC_ACT_INTR_CNT);
9120
9121                 /* Check active interrupts received only for MSI/MSI-X */
9122                 if (intr_mode == 0 ||
9123                     phba->sli.slistat.sli_intr >= LPFC_ACT_INTR_CNT) {
9124                         /* Log the current active interrupt mode */
9125                         phba->intr_mode = intr_mode;
9126                         lpfc_log_intr_mode(phba, intr_mode);
9127                         break;
9128                 }
9129                 lpfc_printf_log(phba, KERN_INFO, LOG_INIT,
9130                                 "0451 Configure interrupt mode (%d) "
9131                                 "failed active interrupt test.\n",
9132                                 intr_mode);
9133                 /* Unset the previous SLI-4 HBA setup. */
9134                 /*
9135                  * TODO:  Is this operation compatible with IF TYPE 2
9136                  * devices?  All port state is deleted and cleared.
9137                  */
9138                 lpfc_sli4_unset_hba(phba);
9139                 /* Try next level of interrupt mode */
9140                 cfg_mode = --intr_mode;
9141         }
9142
9143         /* Perform post initialization setup */
9144         lpfc_post_init_setup(phba);
9145
9146         /* check for firmware upgrade or downgrade */
9147         snprintf(file_name, 16, "%s.grp", phba->ModelName);
9148         error = request_firmware(&fw, file_name, &phba->pcidev->dev);
9149         if (!error) {
9150                 lpfc_write_firmware(phba, fw);
9151                 release_firmware(fw);
9152         }
9153
9154         /* Check if there are static vports to be created. */
9155         lpfc_create_static_vport(phba);
9156         return 0;
9157
9158 out_disable_intr:
9159         lpfc_sli4_disable_intr(phba);
9160 out_free_sysfs_attr:
9161         lpfc_free_sysfs_attr(vport);
9162 out_destroy_shost:
9163         lpfc_destroy_shost(phba);
9164 out_unset_driver_resource:
9165         lpfc_unset_driver_resource_phase2(phba);
9166 out_free_iocb_list:
9167         lpfc_free_iocb_list(phba);
9168 out_unset_driver_resource_s4:
9169         lpfc_sli4_driver_resource_unset(phba);
9170 out_unset_pci_mem_s4:
9171         lpfc_sli4_pci_mem_unset(phba);
9172 out_disable_pci_dev:
9173         lpfc_disable_pci_dev(phba);
9174         if (shost)
9175                 scsi_host_put(shost);
9176 out_free_phba:
9177         lpfc_hba_free(phba);
9178         return error;
9179 }
9180
9181 /**
9182  * lpfc_pci_remove_one_s4 - PCI func to unreg SLI-4 device from PCI subsystem
9183  * @pdev: pointer to PCI device
9184  *
9185  * This routine is called from the kernel's PCI subsystem to device with
9186  * SLI-4 interface spec. When an Emulex HBA with SLI-4 interface spec is
9187  * removed from PCI bus, it performs all the necessary cleanup for the HBA
9188  * device to be removed from the PCI subsystem properly.
9189  **/
9190 static void __devexit
9191 lpfc_pci_remove_one_s4(struct pci_dev *pdev)
9192 {
9193         struct Scsi_Host *shost = pci_get_drvdata(pdev);
9194         struct lpfc_vport *vport = (struct lpfc_vport *) shost->hostdata;
9195         struct lpfc_vport **vports;
9196         struct lpfc_hba *phba = vport->phba;
9197         int i;
9198
9199         /* Mark the device unloading flag */
9200         spin_lock_irq(&phba->hbalock);
9201         vport->load_flag |= FC_UNLOADING;
9202         spin_unlock_irq(&phba->hbalock);
9203
9204         /* Free the HBA sysfs attributes */
9205         lpfc_free_sysfs_attr(vport);
9206
9207         /* Release all the vports against this physical port */
9208         vports = lpfc_create_vport_work_array(phba);
9209         if (vports != NULL)
9210                 for (i = 1; i <= phba->max_vports && vports[i] != NULL; i++)
9211                         fc_vport_terminate(vports[i]->fc_vport);
9212         lpfc_destroy_vport_work_array(phba, vports);
9213
9214         /* Remove FC host and then SCSI host with the physical port */
9215         fc_remove_host(shost);
9216         scsi_remove_host(shost);
9217
9218         /* Perform cleanup on the physical port */
9219         lpfc_cleanup(vport);
9220
9221         /*
9222          * Bring down the SLI Layer. This step disables all interrupts,
9223          * clears the rings, discards all mailbox commands, and resets
9224          * the HBA FCoE function.
9225          */
9226         lpfc_debugfs_terminate(vport);
9227         lpfc_sli4_hba_unset(phba);
9228
9229         spin_lock_irq(&phba->hbalock);
9230         list_del_init(&vport->listentry);
9231         spin_unlock_irq(&phba->hbalock);
9232
9233         /* Perform scsi free before driver resource_unset since scsi
9234          * buffers are released to their corresponding pools here.
9235          */
9236         lpfc_scsi_free(phba);
9237         lpfc_sli4_driver_resource_unset(phba);
9238
9239         /* Unmap adapter Control and Doorbell registers */
9240         lpfc_sli4_pci_mem_unset(phba);
9241
9242         /* Release PCI resources and disable device's PCI function */
9243         scsi_host_put(shost);
9244         lpfc_disable_pci_dev(phba);
9245
9246         /* Finally, free the driver's device data structure */
9247         lpfc_hba_free(phba);
9248
9249         return;
9250 }
9251
9252 /**
9253  * lpfc_pci_suspend_one_s4 - PCI func to suspend SLI-4 device for power mgmnt
9254  * @pdev: pointer to PCI device
9255  * @msg: power management message
9256  *
9257  * This routine is called from the kernel's PCI subsystem to support system
9258  * Power Management (PM) to device with SLI-4 interface spec. When PM invokes
9259  * this method, it quiesces the device by stopping the driver's worker
9260  * thread for the device, turning off device's interrupt and DMA, and bring
9261  * the device offline. Note that as the driver implements the minimum PM
9262  * requirements to a power-aware driver's PM support for suspend/resume -- all
9263  * the possible PM messages (SUSPEND, HIBERNATE, FREEZE) to the suspend()
9264  * method call will be treated as SUSPEND and the driver will fully
9265  * reinitialize its device during resume() method call, the driver will set
9266  * device to PCI_D3hot state in PCI config space instead of setting it
9267  * according to the @msg provided by the PM.
9268  *
9269  * Return code
9270  *      0 - driver suspended the device
9271  *      Error otherwise
9272  **/
9273 static int
9274 lpfc_pci_suspend_one_s4(struct pci_dev *pdev, pm_message_t msg)
9275 {
9276         struct Scsi_Host *shost = pci_get_drvdata(pdev);
9277         struct lpfc_hba *phba = ((struct lpfc_vport *)shost->hostdata)->phba;
9278
9279         lpfc_printf_log(phba, KERN_INFO, LOG_INIT,
9280                         "2843 PCI device Power Management suspend.\n");
9281
9282         /* Bring down the device */
9283         lpfc_offline_prep(phba);
9284         lpfc_offline(phba);
9285         kthread_stop(phba->worker_thread);
9286
9287         /* Disable interrupt from device */
9288         lpfc_sli4_disable_intr(phba);
9289
9290         /* Save device state to PCI config space */
9291         pci_save_state(pdev);
9292         pci_set_power_state(pdev, PCI_D3hot);
9293
9294         return 0;
9295 }
9296
9297 /**
9298  * lpfc_pci_resume_one_s4 - PCI func to resume SLI-4 device for power mgmnt
9299  * @pdev: pointer to PCI device
9300  *
9301  * This routine is called from the kernel's PCI subsystem to support system
9302  * Power Management (PM) to device with SLI-4 interface spac. When PM invokes
9303  * this method, it restores the device's PCI config space state and fully
9304  * reinitializes the device and brings it online. Note that as the driver
9305  * implements the minimum PM requirements to a power-aware driver's PM for
9306  * suspend/resume -- all the possible PM messages (SUSPEND, HIBERNATE, FREEZE)
9307  * to the suspend() method call will be treated as SUSPEND and the driver
9308  * will fully reinitialize its device during resume() method call, the device
9309  * will be set to PCI_D0 directly in PCI config space before restoring the
9310  * state.
9311  *
9312  * Return code
9313  *      0 - driver suspended the device
9314  *      Error otherwise
9315  **/
9316 static int
9317 lpfc_pci_resume_one_s4(struct pci_dev *pdev)
9318 {
9319         struct Scsi_Host *shost = pci_get_drvdata(pdev);
9320         struct lpfc_hba *phba = ((struct lpfc_vport *)shost->hostdata)->phba;
9321         uint32_t intr_mode;
9322         int error;
9323
9324         lpfc_printf_log(phba, KERN_INFO, LOG_INIT,
9325                         "0292 PCI device Power Management resume.\n");
9326
9327         /* Restore device state from PCI config space */
9328         pci_set_power_state(pdev, PCI_D0);
9329         pci_restore_state(pdev);
9330
9331         /*
9332          * As the new kernel behavior of pci_restore_state() API call clears
9333          * device saved_state flag, need to save the restored state again.
9334          */
9335         pci_save_state(pdev);
9336
9337         if (pdev->is_busmaster)
9338                 pci_set_master(pdev);
9339
9340          /* Startup the kernel thread for this host adapter. */
9341         phba->worker_thread = kthread_run(lpfc_do_work, phba,
9342                                         "lpfc_worker_%d", phba->brd_no);
9343         if (IS_ERR(phba->worker_thread)) {
9344                 error = PTR_ERR(phba->worker_thread);
9345                 lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
9346                                 "0293 PM resume failed to start worker "
9347                                 "thread: error=x%x.\n", error);
9348                 return error;
9349         }
9350
9351         /* Configure and enable interrupt */
9352         intr_mode = lpfc_sli4_enable_intr(phba, phba->intr_mode);
9353         if (intr_mode == LPFC_INTR_ERROR) {
9354                 lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
9355                                 "0294 PM resume Failed to enable interrupt\n");
9356                 return -EIO;
9357         } else
9358                 phba->intr_mode = intr_mode;
9359
9360         /* Restart HBA and bring it online */
9361         lpfc_sli_brdrestart(phba);
9362         lpfc_online(phba);
9363
9364         /* Log the current active interrupt mode */
9365         lpfc_log_intr_mode(phba, phba->intr_mode);
9366
9367         return 0;
9368 }
9369
9370 /**
9371  * lpfc_sli4_prep_dev_for_recover - Prepare SLI4 device for pci slot recover
9372  * @phba: pointer to lpfc hba data structure.
9373  *
9374  * This routine is called to prepare the SLI4 device for PCI slot recover. It
9375  * aborts all the outstanding SCSI I/Os to the pci device.
9376  **/
9377 static void
9378 lpfc_sli4_prep_dev_for_recover(struct lpfc_hba *phba)
9379 {
9380         struct lpfc_sli *psli = &phba->sli;
9381         struct lpfc_sli_ring  *pring;
9382
9383         lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
9384                         "2828 PCI channel I/O abort preparing for recovery\n");
9385         /*
9386          * There may be errored I/Os through HBA, abort all I/Os on txcmplq
9387          * and let the SCSI mid-layer to retry them to recover.
9388          */
9389         pring = &psli->ring[psli->fcp_ring];
9390         lpfc_sli_abort_iocb_ring(phba, pring);
9391 }
9392
9393 /**
9394  * lpfc_sli4_prep_dev_for_reset - Prepare SLI4 device for pci slot reset
9395  * @phba: pointer to lpfc hba data structure.
9396  *
9397  * This routine is called to prepare the SLI4 device for PCI slot reset. It
9398  * disables the device interrupt and pci device, and aborts the internal FCP
9399  * pending I/Os.
9400  **/
9401 static void
9402 lpfc_sli4_prep_dev_for_reset(struct lpfc_hba *phba)
9403 {
9404         lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
9405                         "2826 PCI channel disable preparing for reset\n");
9406
9407         /* Block any management I/Os to the device */
9408         lpfc_block_mgmt_io(phba);
9409
9410         /* Block all SCSI devices' I/Os on the host */
9411         lpfc_scsi_dev_block(phba);
9412
9413         /* stop all timers */
9414         lpfc_stop_hba_timers(phba);
9415
9416         /* Disable interrupt and pci device */
9417         lpfc_sli4_disable_intr(phba);
9418         pci_disable_device(phba->pcidev);
9419
9420         /* Flush all driver's outstanding SCSI I/Os as we are to reset */
9421         lpfc_sli_flush_fcp_rings(phba);
9422 }
9423
9424 /**
9425  * lpfc_sli4_prep_dev_for_perm_failure - Prepare SLI4 dev for pci slot disable
9426  * @phba: pointer to lpfc hba data structure.
9427  *
9428  * This routine is called to prepare the SLI4 device for PCI slot permanently
9429  * disabling. It blocks the SCSI transport layer traffic and flushes the FCP
9430  * pending I/Os.
9431  **/
9432 static void
9433 lpfc_sli4_prep_dev_for_perm_failure(struct lpfc_hba *phba)
9434 {
9435         lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
9436                         "2827 PCI channel permanent disable for failure\n");
9437
9438         /* Block all SCSI devices' I/Os on the host */
9439         lpfc_scsi_dev_block(phba);
9440
9441         /* stop all timers */
9442         lpfc_stop_hba_timers(phba);
9443
9444         /* Clean up all driver's outstanding SCSI I/Os */
9445         lpfc_sli_flush_fcp_rings(phba);
9446 }
9447
9448 /**
9449  * lpfc_io_error_detected_s4 - Method for handling PCI I/O error to SLI-4 device
9450  * @pdev: pointer to PCI device.
9451  * @state: the current PCI connection state.
9452  *
9453  * This routine is called from the PCI subsystem for error handling to device
9454  * with SLI-4 interface spec. This function is called by the PCI subsystem
9455  * after a PCI bus error affecting this device has been detected. When this
9456  * function is invoked, it will need to stop all the I/Os and interrupt(s)
9457  * to the device. Once that is done, it will return PCI_ERS_RESULT_NEED_RESET
9458  * for the PCI subsystem to perform proper recovery as desired.
9459  *
9460  * Return codes
9461  *      PCI_ERS_RESULT_NEED_RESET - need to reset before recovery
9462  *      PCI_ERS_RESULT_DISCONNECT - device could not be recovered
9463  **/
9464 static pci_ers_result_t
9465 lpfc_io_error_detected_s4(struct pci_dev *pdev, pci_channel_state_t state)
9466 {
9467         struct Scsi_Host *shost = pci_get_drvdata(pdev);
9468         struct lpfc_hba *phba = ((struct lpfc_vport *)shost->hostdata)->phba;
9469
9470         switch (state) {
9471         case pci_channel_io_normal:
9472                 /* Non-fatal error, prepare for recovery */
9473                 lpfc_sli4_prep_dev_for_recover(phba);
9474                 return PCI_ERS_RESULT_CAN_RECOVER;
9475         case pci_channel_io_frozen:
9476                 /* Fatal error, prepare for slot reset */
9477                 lpfc_sli4_prep_dev_for_reset(phba);
9478                 return PCI_ERS_RESULT_NEED_RESET;
9479         case pci_channel_io_perm_failure:
9480                 /* Permanent failure, prepare for device down */
9481                 lpfc_sli4_prep_dev_for_perm_failure(phba);
9482                 return PCI_ERS_RESULT_DISCONNECT;
9483         default:
9484                 /* Unknown state, prepare and request slot reset */
9485                 lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
9486                                 "2825 Unknown PCI error state: x%x\n", state);
9487                 lpfc_sli4_prep_dev_for_reset(phba);
9488                 return PCI_ERS_RESULT_NEED_RESET;
9489         }
9490 }
9491
9492 /**
9493  * lpfc_io_slot_reset_s4 - Method for restart PCI SLI-4 device from scratch
9494  * @pdev: pointer to PCI device.
9495  *
9496  * This routine is called from the PCI subsystem for error handling to device
9497  * with SLI-4 interface spec. It is called after PCI bus has been reset to
9498  * restart the PCI card from scratch, as if from a cold-boot. During the
9499  * PCI subsystem error recovery, after the driver returns
9500  * PCI_ERS_RESULT_NEED_RESET, the PCI subsystem will perform proper error
9501  * recovery and then call this routine before calling the .resume method to
9502  * recover the device. This function will initialize the HBA device, enable
9503  * the interrupt, but it will just put the HBA to offline state without
9504  * passing any I/O traffic.
9505  *
9506  * Return codes
9507  *      PCI_ERS_RESULT_RECOVERED - the device has been recovered
9508  *      PCI_ERS_RESULT_DISCONNECT - device could not be recovered
9509  */
9510 static pci_ers_result_t
9511 lpfc_io_slot_reset_s4(struct pci_dev *pdev)
9512 {
9513         struct Scsi_Host *shost = pci_get_drvdata(pdev);
9514         struct lpfc_hba *phba = ((struct lpfc_vport *)shost->hostdata)->phba;
9515         struct lpfc_sli *psli = &phba->sli;
9516         uint32_t intr_mode;
9517
9518         dev_printk(KERN_INFO, &pdev->dev, "recovering from a slot reset.\n");
9519         if (pci_enable_device_mem(pdev)) {
9520                 printk(KERN_ERR "lpfc: Cannot re-enable "
9521                         "PCI device after reset.\n");
9522                 return PCI_ERS_RESULT_DISCONNECT;
9523         }
9524
9525         pci_restore_state(pdev);
9526
9527         /*
9528          * As the new kernel behavior of pci_restore_state() API call clears
9529          * device saved_state flag, need to save the restored state again.
9530          */
9531         pci_save_state(pdev);
9532
9533         if (pdev->is_busmaster)
9534                 pci_set_master(pdev);
9535
9536         spin_lock_irq(&phba->hbalock);
9537         psli->sli_flag &= ~LPFC_SLI_ACTIVE;
9538         spin_unlock_irq(&phba->hbalock);
9539
9540         /* Configure and enable interrupt */
9541         intr_mode = lpfc_sli4_enable_intr(phba, phba->intr_mode);
9542         if (intr_mode == LPFC_INTR_ERROR) {
9543                 lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
9544                                 "2824 Cannot re-enable interrupt after "
9545                                 "slot reset.\n");
9546                 return PCI_ERS_RESULT_DISCONNECT;
9547         } else
9548                 phba->intr_mode = intr_mode;
9549
9550         /* Log the current active interrupt mode */
9551         lpfc_log_intr_mode(phba, phba->intr_mode);
9552
9553         return PCI_ERS_RESULT_RECOVERED;
9554 }
9555
9556 /**
9557  * lpfc_io_resume_s4 - Method for resuming PCI I/O operation to SLI-4 device
9558  * @pdev: pointer to PCI device
9559  *
9560  * This routine is called from the PCI subsystem for error handling to device
9561  * with SLI-4 interface spec. It is called when kernel error recovery tells
9562  * the lpfc driver that it is ok to resume normal PCI operation after PCI bus
9563  * error recovery. After this call, traffic can start to flow from this device
9564  * again.
9565  **/
9566 static void
9567 lpfc_io_resume_s4(struct pci_dev *pdev)
9568 {
9569         struct Scsi_Host *shost = pci_get_drvdata(pdev);
9570         struct lpfc_hba *phba = ((struct lpfc_vport *)shost->hostdata)->phba;
9571
9572         /*
9573          * In case of slot reset, as function reset is performed through
9574          * mailbox command which needs DMA to be enabled, this operation
9575          * has to be moved to the io resume phase. Taking device offline
9576          * will perform the necessary cleanup.
9577          */
9578         if (!(phba->sli.sli_flag & LPFC_SLI_ACTIVE)) {
9579                 /* Perform device reset */
9580                 lpfc_offline_prep(phba);
9581                 lpfc_offline(phba);
9582                 lpfc_sli_brdrestart(phba);
9583                 /* Bring the device back online */
9584                 lpfc_online(phba);
9585         }
9586
9587         /* Clean up Advanced Error Reporting (AER) if needed */
9588         if (phba->hba_flag & HBA_AER_ENABLED)
9589                 pci_cleanup_aer_uncorrect_error_status(pdev);
9590 }
9591
9592 /**
9593  * lpfc_pci_probe_one - lpfc PCI probe func to reg dev to PCI subsystem
9594  * @pdev: pointer to PCI device
9595  * @pid: pointer to PCI device identifier
9596  *
9597  * This routine is to be registered to the kernel's PCI subsystem. When an
9598  * Emulex HBA device is presented on PCI bus, the kernel PCI subsystem looks
9599  * at PCI device-specific information of the device and driver to see if the
9600  * driver state that it can support this kind of device. If the match is
9601  * successful, the driver core invokes this routine. This routine dispatches
9602  * the action to the proper SLI-3 or SLI-4 device probing routine, which will
9603  * do all the initialization that it needs to do to handle the HBA device
9604  * properly.
9605  *
9606  * Return code
9607  *      0 - driver can claim the device
9608  *      negative value - driver can not claim the device
9609  **/
9610 static int __devinit
9611 lpfc_pci_probe_one(struct pci_dev *pdev, const struct pci_device_id *pid)
9612 {
9613         int rc;
9614         struct lpfc_sli_intf intf;
9615
9616         if (pci_read_config_dword(pdev, LPFC_SLI_INTF, &intf.word0))
9617                 return -ENODEV;
9618
9619         if ((bf_get(lpfc_sli_intf_valid, &intf) == LPFC_SLI_INTF_VALID) &&
9620             (bf_get(lpfc_sli_intf_slirev, &intf) == LPFC_SLI_INTF_REV_SLI4))
9621                 rc = lpfc_pci_probe_one_s4(pdev, pid);
9622         else
9623                 rc = lpfc_pci_probe_one_s3(pdev, pid);
9624
9625         return rc;
9626 }
9627
9628 /**
9629  * lpfc_pci_remove_one - lpfc PCI func to unreg dev from PCI subsystem
9630  * @pdev: pointer to PCI device
9631  *
9632  * This routine is to be registered to the kernel's PCI subsystem. When an
9633  * Emulex HBA is removed from PCI bus, the driver core invokes this routine.
9634  * This routine dispatches the action to the proper SLI-3 or SLI-4 device
9635  * remove routine, which will perform all the necessary cleanup for the
9636  * device to be removed from the PCI subsystem properly.
9637  **/
9638 static void __devexit
9639 lpfc_pci_remove_one(struct pci_dev *pdev)
9640 {
9641         struct Scsi_Host *shost = pci_get_drvdata(pdev);
9642         struct lpfc_hba *phba = ((struct lpfc_vport *)shost->hostdata)->phba;
9643
9644         switch (phba->pci_dev_grp) {
9645         case LPFC_PCI_DEV_LP:
9646                 lpfc_pci_remove_one_s3(pdev);
9647                 break;
9648         case LPFC_PCI_DEV_OC:
9649                 lpfc_pci_remove_one_s4(pdev);
9650                 break;
9651         default:
9652                 lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
9653                                 "1424 Invalid PCI device group: 0x%x\n",
9654                                 phba->pci_dev_grp);
9655                 break;
9656         }
9657         return;
9658 }
9659
9660 /**
9661  * lpfc_pci_suspend_one - lpfc PCI func to suspend dev for power management
9662  * @pdev: pointer to PCI device
9663  * @msg: power management message
9664  *
9665  * This routine is to be registered to the kernel's PCI subsystem to support
9666  * system Power Management (PM). When PM invokes this method, it dispatches
9667  * the action to the proper SLI-3 or SLI-4 device suspend routine, which will
9668  * suspend the device.
9669  *
9670  * Return code
9671  *      0 - driver suspended the device
9672  *      Error otherwise
9673  **/
9674 static int
9675 lpfc_pci_suspend_one(struct pci_dev *pdev, pm_message_t msg)
9676 {
9677         struct Scsi_Host *shost = pci_get_drvdata(pdev);
9678         struct lpfc_hba *phba = ((struct lpfc_vport *)shost->hostdata)->phba;
9679         int rc = -ENODEV;
9680
9681         switch (phba->pci_dev_grp) {
9682         case LPFC_PCI_DEV_LP:
9683                 rc = lpfc_pci_suspend_one_s3(pdev, msg);
9684                 break;
9685         case LPFC_PCI_DEV_OC:
9686                 rc = lpfc_pci_suspend_one_s4(pdev, msg);
9687                 break;
9688         default:
9689                 lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
9690                                 "1425 Invalid PCI device group: 0x%x\n",
9691                                 phba->pci_dev_grp);
9692                 break;
9693         }
9694         return rc;
9695 }
9696
9697 /**
9698  * lpfc_pci_resume_one - lpfc PCI func to resume dev for power management
9699  * @pdev: pointer to PCI device
9700  *
9701  * This routine is to be registered to the kernel's PCI subsystem to support
9702  * system Power Management (PM). When PM invokes this method, it dispatches
9703  * the action to the proper SLI-3 or SLI-4 device resume routine, which will
9704  * resume the device.
9705  *
9706  * Return code
9707  *      0 - driver suspended the device
9708  *      Error otherwise
9709  **/
9710 static int
9711 lpfc_pci_resume_one(struct pci_dev *pdev)
9712 {
9713         struct Scsi_Host *shost = pci_get_drvdata(pdev);
9714         struct lpfc_hba *phba = ((struct lpfc_vport *)shost->hostdata)->phba;
9715         int rc = -ENODEV;
9716
9717         switch (phba->pci_dev_grp) {
9718         case LPFC_PCI_DEV_LP:
9719                 rc = lpfc_pci_resume_one_s3(pdev);
9720                 break;
9721         case LPFC_PCI_DEV_OC:
9722                 rc = lpfc_pci_resume_one_s4(pdev);
9723                 break;
9724         default:
9725                 lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
9726                                 "1426 Invalid PCI device group: 0x%x\n",
9727                                 phba->pci_dev_grp);
9728                 break;
9729         }
9730         return rc;
9731 }
9732
9733 /**
9734  * lpfc_io_error_detected - lpfc method for handling PCI I/O error
9735  * @pdev: pointer to PCI device.
9736  * @state: the current PCI connection state.
9737  *
9738  * This routine is registered to the PCI subsystem for error handling. This
9739  * function is called by the PCI subsystem after a PCI bus error affecting
9740  * this device has been detected. When this routine is invoked, it dispatches
9741  * the action to the proper SLI-3 or SLI-4 device error detected handling
9742  * routine, which will perform the proper error detected operation.
9743  *
9744  * Return codes
9745  *      PCI_ERS_RESULT_NEED_RESET - need to reset before recovery
9746  *      PCI_ERS_RESULT_DISCONNECT - device could not be recovered
9747  **/
9748 static pci_ers_result_t
9749 lpfc_io_error_detected(struct pci_dev *pdev, pci_channel_state_t state)
9750 {
9751         struct Scsi_Host *shost = pci_get_drvdata(pdev);
9752         struct lpfc_hba *phba = ((struct lpfc_vport *)shost->hostdata)->phba;
9753         pci_ers_result_t rc = PCI_ERS_RESULT_DISCONNECT;
9754
9755         switch (phba->pci_dev_grp) {
9756         case LPFC_PCI_DEV_LP:
9757                 rc = lpfc_io_error_detected_s3(pdev, state);
9758                 break;
9759         case LPFC_PCI_DEV_OC:
9760                 rc = lpfc_io_error_detected_s4(pdev, state);
9761                 break;
9762         default:
9763                 lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
9764                                 "1427 Invalid PCI device group: 0x%x\n",
9765                                 phba->pci_dev_grp);
9766                 break;
9767         }
9768         return rc;
9769 }
9770
9771 /**
9772  * lpfc_io_slot_reset - lpfc method for restart PCI dev from scratch
9773  * @pdev: pointer to PCI device.
9774  *
9775  * This routine is registered to the PCI subsystem for error handling. This
9776  * function is called after PCI bus has been reset to restart the PCI card
9777  * from scratch, as if from a cold-boot. When this routine is invoked, it
9778  * dispatches the action to the proper SLI-3 or SLI-4 device reset handling
9779  * routine, which will perform the proper device reset.
9780  *
9781  * Return codes
9782  *      PCI_ERS_RESULT_RECOVERED - the device has been recovered
9783  *      PCI_ERS_RESULT_DISCONNECT - device could not be recovered
9784  **/
9785 static pci_ers_result_t
9786 lpfc_io_slot_reset(struct pci_dev *pdev)
9787 {
9788         struct Scsi_Host *shost = pci_get_drvdata(pdev);
9789         struct lpfc_hba *phba = ((struct lpfc_vport *)shost->hostdata)->phba;
9790         pci_ers_result_t rc = PCI_ERS_RESULT_DISCONNECT;
9791
9792         switch (phba->pci_dev_grp) {
9793         case LPFC_PCI_DEV_LP:
9794                 rc = lpfc_io_slot_reset_s3(pdev);
9795                 break;
9796         case LPFC_PCI_DEV_OC:
9797                 rc = lpfc_io_slot_reset_s4(pdev);
9798                 break;
9799         default:
9800                 lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
9801                                 "1428 Invalid PCI device group: 0x%x\n",
9802                                 phba->pci_dev_grp);
9803                 break;
9804         }
9805         return rc;
9806 }
9807
9808 /**
9809  * lpfc_io_resume - lpfc method for resuming PCI I/O operation
9810  * @pdev: pointer to PCI device
9811  *
9812  * This routine is registered to the PCI subsystem for error handling. It
9813  * is called when kernel error recovery tells the lpfc driver that it is
9814  * OK to resume normal PCI operation after PCI bus error recovery. When
9815  * this routine is invoked, it dispatches the action to the proper SLI-3
9816  * or SLI-4 device io_resume routine, which will resume the device operation.
9817  **/
9818 static void
9819 lpfc_io_resume(struct pci_dev *pdev)
9820 {
9821         struct Scsi_Host *shost = pci_get_drvdata(pdev);
9822         struct lpfc_hba *phba = ((struct lpfc_vport *)shost->hostdata)->phba;
9823
9824         switch (phba->pci_dev_grp) {
9825         case LPFC_PCI_DEV_LP:
9826                 lpfc_io_resume_s3(pdev);
9827                 break;
9828         case LPFC_PCI_DEV_OC:
9829                 lpfc_io_resume_s4(pdev);
9830                 break;
9831         default:
9832                 lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
9833                                 "1429 Invalid PCI device group: 0x%x\n",
9834                                 phba->pci_dev_grp);
9835                 break;
9836         }
9837         return;
9838 }
9839
9840 static struct pci_device_id lpfc_id_table[] = {
9841         {PCI_VENDOR_ID_EMULEX, PCI_DEVICE_ID_VIPER,
9842                 PCI_ANY_ID, PCI_ANY_ID, },
9843         {PCI_VENDOR_ID_EMULEX, PCI_DEVICE_ID_FIREFLY,
9844                 PCI_ANY_ID, PCI_ANY_ID, },
9845         {PCI_VENDOR_ID_EMULEX, PCI_DEVICE_ID_THOR,
9846                 PCI_ANY_ID, PCI_ANY_ID, },
9847         {PCI_VENDOR_ID_EMULEX, PCI_DEVICE_ID_PEGASUS,
9848                 PCI_ANY_ID, PCI_ANY_ID, },
9849         {PCI_VENDOR_ID_EMULEX, PCI_DEVICE_ID_CENTAUR,
9850                 PCI_ANY_ID, PCI_ANY_ID, },
9851         {PCI_VENDOR_ID_EMULEX, PCI_DEVICE_ID_DRAGONFLY,
9852                 PCI_ANY_ID, PCI_ANY_ID, },
9853         {PCI_VENDOR_ID_EMULEX, PCI_DEVICE_ID_SUPERFLY,
9854                 PCI_ANY_ID, PCI_ANY_ID, },
9855         {PCI_VENDOR_ID_EMULEX, PCI_DEVICE_ID_RFLY,
9856                 PCI_ANY_ID, PCI_ANY_ID, },
9857         {PCI_VENDOR_ID_EMULEX, PCI_DEVICE_ID_PFLY,
9858                 PCI_ANY_ID, PCI_ANY_ID, },
9859         {PCI_VENDOR_ID_EMULEX, PCI_DEVICE_ID_NEPTUNE,
9860                 PCI_ANY_ID, PCI_ANY_ID, },
9861         {PCI_VENDOR_ID_EMULEX, PCI_DEVICE_ID_NEPTUNE_SCSP,
9862                 PCI_ANY_ID, PCI_ANY_ID, },
9863         {PCI_VENDOR_ID_EMULEX, PCI_DEVICE_ID_NEPTUNE_DCSP,
9864                 PCI_ANY_ID, PCI_ANY_ID, },
9865         {PCI_VENDOR_ID_EMULEX, PCI_DEVICE_ID_HELIOS,
9866                 PCI_ANY_ID, PCI_ANY_ID, },
9867         {PCI_VENDOR_ID_EMULEX, PCI_DEVICE_ID_HELIOS_SCSP,
9868                 PCI_ANY_ID, PCI_ANY_ID, },
9869         {PCI_VENDOR_ID_EMULEX, PCI_DEVICE_ID_HELIOS_DCSP,
9870                 PCI_ANY_ID, PCI_ANY_ID, },
9871         {PCI_VENDOR_ID_EMULEX, PCI_DEVICE_ID_BMID,
9872                 PCI_ANY_ID, PCI_ANY_ID, },
9873         {PCI_VENDOR_ID_EMULEX, PCI_DEVICE_ID_BSMB,
9874                 PCI_ANY_ID, PCI_ANY_ID, },
9875         {PCI_VENDOR_ID_EMULEX, PCI_DEVICE_ID_ZEPHYR,
9876                 PCI_ANY_ID, PCI_ANY_ID, },
9877         {PCI_VENDOR_ID_EMULEX, PCI_DEVICE_ID_HORNET,
9878                 PCI_ANY_ID, PCI_ANY_ID, },
9879         {PCI_VENDOR_ID_EMULEX, PCI_DEVICE_ID_ZEPHYR_SCSP,
9880                 PCI_ANY_ID, PCI_ANY_ID, },
9881         {PCI_VENDOR_ID_EMULEX, PCI_DEVICE_ID_ZEPHYR_DCSP,
9882                 PCI_ANY_ID, PCI_ANY_ID, },
9883         {PCI_VENDOR_ID_EMULEX, PCI_DEVICE_ID_ZMID,
9884                 PCI_ANY_ID, PCI_ANY_ID, },
9885         {PCI_VENDOR_ID_EMULEX, PCI_DEVICE_ID_ZSMB,
9886                 PCI_ANY_ID, PCI_ANY_ID, },
9887         {PCI_VENDOR_ID_EMULEX, PCI_DEVICE_ID_TFLY,
9888                 PCI_ANY_ID, PCI_ANY_ID, },
9889         {PCI_VENDOR_ID_EMULEX, PCI_DEVICE_ID_LP101,
9890                 PCI_ANY_ID, PCI_ANY_ID, },
9891         {PCI_VENDOR_ID_EMULEX, PCI_DEVICE_ID_LP10000S,
9892                 PCI_ANY_ID, PCI_ANY_ID, },
9893         {PCI_VENDOR_ID_EMULEX, PCI_DEVICE_ID_LP11000S,
9894                 PCI_ANY_ID, PCI_ANY_ID, },
9895         {PCI_VENDOR_ID_EMULEX, PCI_DEVICE_ID_LPE11000S,
9896                 PCI_ANY_ID, PCI_ANY_ID, },
9897         {PCI_VENDOR_ID_EMULEX, PCI_DEVICE_ID_SAT,
9898                 PCI_ANY_ID, PCI_ANY_ID, },
9899         {PCI_VENDOR_ID_EMULEX, PCI_DEVICE_ID_SAT_MID,
9900                 PCI_ANY_ID, PCI_ANY_ID, },
9901         {PCI_VENDOR_ID_EMULEX, PCI_DEVICE_ID_SAT_SMB,
9902                 PCI_ANY_ID, PCI_ANY_ID, },
9903         {PCI_VENDOR_ID_EMULEX, PCI_DEVICE_ID_SAT_DCSP,
9904                 PCI_ANY_ID, PCI_ANY_ID, },
9905         {PCI_VENDOR_ID_EMULEX, PCI_DEVICE_ID_SAT_SCSP,
9906                 PCI_ANY_ID, PCI_ANY_ID, },
9907         {PCI_VENDOR_ID_EMULEX, PCI_DEVICE_ID_SAT_S,
9908                 PCI_ANY_ID, PCI_ANY_ID, },
9909         {PCI_VENDOR_ID_EMULEX, PCI_DEVICE_ID_PROTEUS_VF,
9910                 PCI_ANY_ID, PCI_ANY_ID, },
9911         {PCI_VENDOR_ID_EMULEX, PCI_DEVICE_ID_PROTEUS_PF,
9912                 PCI_ANY_ID, PCI_ANY_ID, },
9913         {PCI_VENDOR_ID_EMULEX, PCI_DEVICE_ID_PROTEUS_S,
9914                 PCI_ANY_ID, PCI_ANY_ID, },
9915         {PCI_VENDOR_ID_SERVERENGINE, PCI_DEVICE_ID_TIGERSHARK,
9916                 PCI_ANY_ID, PCI_ANY_ID, },
9917         {PCI_VENDOR_ID_SERVERENGINE, PCI_DEVICE_ID_TOMCAT,
9918                 PCI_ANY_ID, PCI_ANY_ID, },
9919         {PCI_VENDOR_ID_EMULEX, PCI_DEVICE_ID_FALCON,
9920                 PCI_ANY_ID, PCI_ANY_ID, },
9921         {PCI_VENDOR_ID_EMULEX, PCI_DEVICE_ID_BALIUS,
9922                 PCI_ANY_ID, PCI_ANY_ID, },
9923         {PCI_VENDOR_ID_EMULEX, PCI_DEVICE_ID_LANCER_FC,
9924                 PCI_ANY_ID, PCI_ANY_ID, },
9925         {PCI_VENDOR_ID_EMULEX, PCI_DEVICE_ID_LANCER_FCOE,
9926                 PCI_ANY_ID, PCI_ANY_ID, },
9927         {PCI_VENDOR_ID_EMULEX, PCI_DEVICE_ID_LANCER_FC_VF,
9928                 PCI_ANY_ID, PCI_ANY_ID, },
9929         {PCI_VENDOR_ID_EMULEX, PCI_DEVICE_ID_LANCER_FCOE_VF,
9930                 PCI_ANY_ID, PCI_ANY_ID, },
9931         { 0 }
9932 };
9933
9934 MODULE_DEVICE_TABLE(pci, lpfc_id_table);
9935
9936 static struct pci_error_handlers lpfc_err_handler = {
9937         .error_detected = lpfc_io_error_detected,
9938         .slot_reset = lpfc_io_slot_reset,
9939         .resume = lpfc_io_resume,
9940 };
9941
9942 static struct pci_driver lpfc_driver = {
9943         .name           = LPFC_DRIVER_NAME,
9944         .id_table       = lpfc_id_table,
9945         .probe          = lpfc_pci_probe_one,
9946         .remove         = __devexit_p(lpfc_pci_remove_one),
9947         .suspend        = lpfc_pci_suspend_one,
9948         .resume         = lpfc_pci_resume_one,
9949         .err_handler    = &lpfc_err_handler,
9950 };
9951
9952 /**
9953  * lpfc_init - lpfc module initialization routine
9954  *
9955  * This routine is to be invoked when the lpfc module is loaded into the
9956  * kernel. The special kernel macro module_init() is used to indicate the
9957  * role of this routine to the kernel as lpfc module entry point.
9958  *
9959  * Return codes
9960  *   0 - successful
9961  *   -ENOMEM - FC attach transport failed
9962  *   all others - failed
9963  */
9964 static int __init
9965 lpfc_init(void)
9966 {
9967         int error = 0;
9968
9969         printk(LPFC_MODULE_DESC "\n");
9970         printk(LPFC_COPYRIGHT "\n");
9971
9972         if (lpfc_enable_npiv) {
9973                 lpfc_transport_functions.vport_create = lpfc_vport_create;
9974                 lpfc_transport_functions.vport_delete = lpfc_vport_delete;
9975         }
9976         lpfc_transport_template =
9977                                 fc_attach_transport(&lpfc_transport_functions);
9978         if (lpfc_transport_template == NULL)
9979                 return -ENOMEM;
9980         if (lpfc_enable_npiv) {
9981                 lpfc_vport_transport_template =
9982                         fc_attach_transport(&lpfc_vport_transport_functions);
9983                 if (lpfc_vport_transport_template == NULL) {
9984                         fc_release_transport(lpfc_transport_template);
9985                         return -ENOMEM;
9986                 }
9987         }
9988         error = pci_register_driver(&lpfc_driver);
9989         if (error) {
9990                 fc_release_transport(lpfc_transport_template);
9991                 if (lpfc_enable_npiv)
9992                         fc_release_transport(lpfc_vport_transport_template);
9993         }
9994
9995         return error;
9996 }
9997
9998 /**
9999  * lpfc_exit - lpfc module removal routine
10000  *
10001  * This routine is invoked when the lpfc module is removed from the kernel.
10002  * The special kernel macro module_exit() is used to indicate the role of
10003  * this routine to the kernel as lpfc module exit point.
10004  */
10005 static void __exit
10006 lpfc_exit(void)
10007 {
10008         pci_unregister_driver(&lpfc_driver);
10009         fc_release_transport(lpfc_transport_template);
10010         if (lpfc_enable_npiv)
10011                 fc_release_transport(lpfc_vport_transport_template);
10012         if (_dump_buf_data) {
10013                 printk(KERN_ERR "9062 BLKGRD: freeing %lu pages for "
10014                                 "_dump_buf_data at 0x%p\n",
10015                                 (1L << _dump_buf_data_order), _dump_buf_data);
10016                 free_pages((unsigned long)_dump_buf_data, _dump_buf_data_order);
10017         }
10018
10019         if (_dump_buf_dif) {
10020                 printk(KERN_ERR "9049 BLKGRD: freeing %lu pages for "
10021                                 "_dump_buf_dif at 0x%p\n",
10022                                 (1L << _dump_buf_dif_order), _dump_buf_dif);
10023                 free_pages((unsigned long)_dump_buf_dif, _dump_buf_dif_order);
10024         }
10025 }
10026
10027 module_init(lpfc_init);
10028 module_exit(lpfc_exit);
10029 MODULE_LICENSE("GPL");
10030 MODULE_DESCRIPTION(LPFC_MODULE_DESC);
10031 MODULE_AUTHOR("Emulex Corporation - tech.support@emulex.com");
10032 MODULE_VERSION("0:" LPFC_DRIVER_VERSION);