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_10Gb)
2931                 fc_host_supported_speeds(shost) |= FC_PORTSPEED_10GBIT;
2932         if (phba->lmt & LMT_8Gb)
2933                 fc_host_supported_speeds(shost) |= FC_PORTSPEED_8GBIT;
2934         if (phba->lmt & LMT_4Gb)
2935                 fc_host_supported_speeds(shost) |= FC_PORTSPEED_4GBIT;
2936         if (phba->lmt & LMT_2Gb)
2937                 fc_host_supported_speeds(shost) |= FC_PORTSPEED_2GBIT;
2938         if (phba->lmt & LMT_1Gb)
2939                 fc_host_supported_speeds(shost) |= FC_PORTSPEED_1GBIT;
2940
2941         fc_host_maxframe_size(shost) =
2942                 (((uint32_t) vport->fc_sparam.cmn.bbRcvSizeMsb & 0x0F) << 8) |
2943                 (uint32_t) vport->fc_sparam.cmn.bbRcvSizeLsb;
2944
2945         fc_host_dev_loss_tmo(shost) = vport->cfg_devloss_tmo;
2946
2947         /* This value is also unchanging */
2948         memset(fc_host_active_fc4s(shost), 0,
2949                sizeof(fc_host_active_fc4s(shost)));
2950         fc_host_active_fc4s(shost)[2] = 1;
2951         fc_host_active_fc4s(shost)[7] = 1;
2952
2953         fc_host_max_npiv_vports(shost) = phba->max_vpi;
2954         spin_lock_irq(shost->host_lock);
2955         vport->load_flag &= ~FC_LOADING;
2956         spin_unlock_irq(shost->host_lock);
2957 }
2958
2959 /**
2960  * lpfc_stop_port_s3 - Stop SLI3 device port
2961  * @phba: pointer to lpfc hba data structure.
2962  *
2963  * This routine is invoked to stop an SLI3 device port, it stops the device
2964  * from generating interrupts and stops the device driver's timers for the
2965  * device.
2966  **/
2967 static void
2968 lpfc_stop_port_s3(struct lpfc_hba *phba)
2969 {
2970         /* Clear all interrupt enable conditions */
2971         writel(0, phba->HCregaddr);
2972         readl(phba->HCregaddr); /* flush */
2973         /* Clear all pending interrupts */
2974         writel(0xffffffff, phba->HAregaddr);
2975         readl(phba->HAregaddr); /* flush */
2976
2977         /* Reset some HBA SLI setup states */
2978         lpfc_stop_hba_timers(phba);
2979         phba->pport->work_port_events = 0;
2980 }
2981
2982 /**
2983  * lpfc_stop_port_s4 - Stop SLI4 device port
2984  * @phba: pointer to lpfc hba data structure.
2985  *
2986  * This routine is invoked to stop an SLI4 device port, it stops the device
2987  * from generating interrupts and stops the device driver's timers for the
2988  * device.
2989  **/
2990 static void
2991 lpfc_stop_port_s4(struct lpfc_hba *phba)
2992 {
2993         /* Reset some HBA SLI4 setup states */
2994         lpfc_stop_hba_timers(phba);
2995         phba->pport->work_port_events = 0;
2996         phba->sli4_hba.intr_enable = 0;
2997 }
2998
2999 /**
3000  * lpfc_stop_port - Wrapper function for stopping hba port
3001  * @phba: Pointer to HBA context object.
3002  *
3003  * This routine wraps the actual SLI3 or SLI4 hba stop port routine from
3004  * the API jump table function pointer from the lpfc_hba struct.
3005  **/
3006 void
3007 lpfc_stop_port(struct lpfc_hba *phba)
3008 {
3009         phba->lpfc_stop_port(phba);
3010 }
3011
3012 /**
3013  * lpfc_fcf_redisc_wait_start_timer - Start fcf rediscover wait timer
3014  * @phba: Pointer to hba for which this call is being executed.
3015  *
3016  * This routine starts the timer waiting for the FCF rediscovery to complete.
3017  **/
3018 void
3019 lpfc_fcf_redisc_wait_start_timer(struct lpfc_hba *phba)
3020 {
3021         unsigned long fcf_redisc_wait_tmo =
3022                 (jiffies + msecs_to_jiffies(LPFC_FCF_REDISCOVER_WAIT_TMO));
3023         /* Start fcf rediscovery wait period timer */
3024         mod_timer(&phba->fcf.redisc_wait, fcf_redisc_wait_tmo);
3025         spin_lock_irq(&phba->hbalock);
3026         /* Allow action to new fcf asynchronous event */
3027         phba->fcf.fcf_flag &= ~(FCF_AVAILABLE | FCF_SCAN_DONE);
3028         /* Mark the FCF rediscovery pending state */
3029         phba->fcf.fcf_flag |= FCF_REDISC_PEND;
3030         spin_unlock_irq(&phba->hbalock);
3031 }
3032
3033 /**
3034  * lpfc_sli4_fcf_redisc_wait_tmo - FCF table rediscover wait timeout
3035  * @ptr: Map to lpfc_hba data structure pointer.
3036  *
3037  * This routine is invoked when waiting for FCF table rediscover has been
3038  * timed out. If new FCF record(s) has (have) been discovered during the
3039  * wait period, a new FCF event shall be added to the FCOE async event
3040  * list, and then worker thread shall be waked up for processing from the
3041  * worker thread context.
3042  **/
3043 void
3044 lpfc_sli4_fcf_redisc_wait_tmo(unsigned long ptr)
3045 {
3046         struct lpfc_hba *phba = (struct lpfc_hba *)ptr;
3047
3048         /* Don't send FCF rediscovery event if timer cancelled */
3049         spin_lock_irq(&phba->hbalock);
3050         if (!(phba->fcf.fcf_flag & FCF_REDISC_PEND)) {
3051                 spin_unlock_irq(&phba->hbalock);
3052                 return;
3053         }
3054         /* Clear FCF rediscovery timer pending flag */
3055         phba->fcf.fcf_flag &= ~FCF_REDISC_PEND;
3056         /* FCF rediscovery event to worker thread */
3057         phba->fcf.fcf_flag |= FCF_REDISC_EVT;
3058         spin_unlock_irq(&phba->hbalock);
3059         lpfc_printf_log(phba, KERN_INFO, LOG_FIP,
3060                         "2776 FCF rediscover quiescent timer expired\n");
3061         /* wake up worker thread */
3062         lpfc_worker_wake_up(phba);
3063 }
3064
3065 /**
3066  * lpfc_sli4_parse_latt_fault - Parse sli4 link-attention link fault code
3067  * @phba: pointer to lpfc hba data structure.
3068  * @acqe_link: pointer to the async link completion queue entry.
3069  *
3070  * This routine is to parse the SLI4 link-attention link fault code and
3071  * translate it into the base driver's read link attention mailbox command
3072  * status.
3073  *
3074  * Return: Link-attention status in terms of base driver's coding.
3075  **/
3076 static uint16_t
3077 lpfc_sli4_parse_latt_fault(struct lpfc_hba *phba,
3078                            struct lpfc_acqe_link *acqe_link)
3079 {
3080         uint16_t latt_fault;
3081
3082         switch (bf_get(lpfc_acqe_link_fault, acqe_link)) {
3083         case LPFC_ASYNC_LINK_FAULT_NONE:
3084         case LPFC_ASYNC_LINK_FAULT_LOCAL:
3085         case LPFC_ASYNC_LINK_FAULT_REMOTE:
3086                 latt_fault = 0;
3087                 break;
3088         default:
3089                 lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
3090                                 "0398 Invalid link fault code: x%x\n",
3091                                 bf_get(lpfc_acqe_link_fault, acqe_link));
3092                 latt_fault = MBXERR_ERROR;
3093                 break;
3094         }
3095         return latt_fault;
3096 }
3097
3098 /**
3099  * lpfc_sli4_parse_latt_type - Parse sli4 link attention type
3100  * @phba: pointer to lpfc hba data structure.
3101  * @acqe_link: pointer to the async link completion queue entry.
3102  *
3103  * This routine is to parse the SLI4 link attention type and translate it
3104  * into the base driver's link attention type coding.
3105  *
3106  * Return: Link attention type in terms of base driver's coding.
3107  **/
3108 static uint8_t
3109 lpfc_sli4_parse_latt_type(struct lpfc_hba *phba,
3110                           struct lpfc_acqe_link *acqe_link)
3111 {
3112         uint8_t att_type;
3113
3114         switch (bf_get(lpfc_acqe_link_status, acqe_link)) {
3115         case LPFC_ASYNC_LINK_STATUS_DOWN:
3116         case LPFC_ASYNC_LINK_STATUS_LOGICAL_DOWN:
3117                 att_type = LPFC_ATT_LINK_DOWN;
3118                 break;
3119         case LPFC_ASYNC_LINK_STATUS_UP:
3120                 /* Ignore physical link up events - wait for logical link up */
3121                 att_type = LPFC_ATT_RESERVED;
3122                 break;
3123         case LPFC_ASYNC_LINK_STATUS_LOGICAL_UP:
3124                 att_type = LPFC_ATT_LINK_UP;
3125                 break;
3126         default:
3127                 lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
3128                                 "0399 Invalid link attention type: x%x\n",
3129                                 bf_get(lpfc_acqe_link_status, acqe_link));
3130                 att_type = LPFC_ATT_RESERVED;
3131                 break;
3132         }
3133         return att_type;
3134 }
3135
3136 /**
3137  * lpfc_sli4_parse_latt_link_speed - Parse sli4 link-attention link speed
3138  * @phba: pointer to lpfc hba data structure.
3139  * @acqe_link: pointer to the async link completion queue entry.
3140  *
3141  * This routine is to parse the SLI4 link-attention link speed and translate
3142  * it into the base driver's link-attention link speed coding.
3143  *
3144  * Return: Link-attention link speed in terms of base driver's coding.
3145  **/
3146 static uint8_t
3147 lpfc_sli4_parse_latt_link_speed(struct lpfc_hba *phba,
3148                                 struct lpfc_acqe_link *acqe_link)
3149 {
3150         uint8_t link_speed;
3151
3152         switch (bf_get(lpfc_acqe_link_speed, acqe_link)) {
3153         case LPFC_ASYNC_LINK_SPEED_ZERO:
3154         case LPFC_ASYNC_LINK_SPEED_10MBPS:
3155         case LPFC_ASYNC_LINK_SPEED_100MBPS:
3156                 link_speed = LPFC_LINK_SPEED_UNKNOWN;
3157                 break;
3158         case LPFC_ASYNC_LINK_SPEED_1GBPS:
3159                 link_speed = LPFC_LINK_SPEED_1GHZ;
3160                 break;
3161         case LPFC_ASYNC_LINK_SPEED_10GBPS:
3162                 link_speed = LPFC_LINK_SPEED_10GHZ;
3163                 break;
3164         default:
3165                 lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
3166                                 "0483 Invalid link-attention link speed: x%x\n",
3167                                 bf_get(lpfc_acqe_link_speed, acqe_link));
3168                 link_speed = LPFC_LINK_SPEED_UNKNOWN;
3169                 break;
3170         }
3171         return link_speed;
3172 }
3173
3174 /**
3175  * lpfc_sli4_async_link_evt - Process the asynchronous FCoE link event
3176  * @phba: pointer to lpfc hba data structure.
3177  * @acqe_link: pointer to the async link completion queue entry.
3178  *
3179  * This routine is to handle the SLI4 asynchronous FCoE link event.
3180  **/
3181 static void
3182 lpfc_sli4_async_link_evt(struct lpfc_hba *phba,
3183                          struct lpfc_acqe_link *acqe_link)
3184 {
3185         struct lpfc_dmabuf *mp;
3186         LPFC_MBOXQ_t *pmb;
3187         MAILBOX_t *mb;
3188         struct lpfc_mbx_read_top *la;
3189         uint8_t att_type;
3190         int rc;
3191
3192         att_type = lpfc_sli4_parse_latt_type(phba, acqe_link);
3193         if (att_type != LPFC_ATT_LINK_DOWN && att_type != LPFC_ATT_LINK_UP)
3194                 return;
3195         phba->fcoe_eventtag = acqe_link->event_tag;
3196         pmb = (LPFC_MBOXQ_t *)mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
3197         if (!pmb) {
3198                 lpfc_printf_log(phba, KERN_ERR, LOG_SLI,
3199                                 "0395 The mboxq allocation failed\n");
3200                 return;
3201         }
3202         mp = kmalloc(sizeof(struct lpfc_dmabuf), GFP_KERNEL);
3203         if (!mp) {
3204                 lpfc_printf_log(phba, KERN_ERR, LOG_SLI,
3205                                 "0396 The lpfc_dmabuf allocation failed\n");
3206                 goto out_free_pmb;
3207         }
3208         mp->virt = lpfc_mbuf_alloc(phba, 0, &mp->phys);
3209         if (!mp->virt) {
3210                 lpfc_printf_log(phba, KERN_ERR, LOG_SLI,
3211                                 "0397 The mbuf allocation failed\n");
3212                 goto out_free_dmabuf;
3213         }
3214
3215         /* Cleanup any outstanding ELS commands */
3216         lpfc_els_flush_all_cmd(phba);
3217
3218         /* Block ELS IOCBs until we have done process link event */
3219         phba->sli.ring[LPFC_ELS_RING].flag |= LPFC_STOP_IOCB_EVENT;
3220
3221         /* Update link event statistics */
3222         phba->sli.slistat.link_event++;
3223
3224         /* Create lpfc_handle_latt mailbox command from link ACQE */
3225         lpfc_read_topology(phba, pmb, mp);
3226         pmb->mbox_cmpl = lpfc_mbx_cmpl_read_topology;
3227         pmb->vport = phba->pport;
3228
3229         /* Keep the link status for extra SLI4 state machine reference */
3230         phba->sli4_hba.link_state.speed =
3231                                 bf_get(lpfc_acqe_link_speed, acqe_link);
3232         phba->sli4_hba.link_state.duplex =
3233                                 bf_get(lpfc_acqe_link_duplex, acqe_link);
3234         phba->sli4_hba.link_state.status =
3235                                 bf_get(lpfc_acqe_link_status, acqe_link);
3236         phba->sli4_hba.link_state.type =
3237                                 bf_get(lpfc_acqe_link_type, acqe_link);
3238         phba->sli4_hba.link_state.number =
3239                                 bf_get(lpfc_acqe_link_number, acqe_link);
3240         phba->sli4_hba.link_state.fault =
3241                                 bf_get(lpfc_acqe_link_fault, acqe_link);
3242         phba->sli4_hba.link_state.logical_speed =
3243                         bf_get(lpfc_acqe_logical_link_speed, acqe_link);
3244         lpfc_printf_log(phba, KERN_INFO, LOG_SLI,
3245                         "2900 Async FC/FCoE Link event - Speed:%dGBit "
3246                         "duplex:x%x LA Type:x%x Port Type:%d Port Number:%d "
3247                         "Logical speed:%dMbps Fault:%d\n",
3248                         phba->sli4_hba.link_state.speed,
3249                         phba->sli4_hba.link_state.topology,
3250                         phba->sli4_hba.link_state.status,
3251                         phba->sli4_hba.link_state.type,
3252                         phba->sli4_hba.link_state.number,
3253                         phba->sli4_hba.link_state.logical_speed * 10,
3254                         phba->sli4_hba.link_state.fault);
3255         /*
3256          * For FC Mode: issue the READ_TOPOLOGY mailbox command to fetch
3257          * topology info. Note: Optional for non FC-AL ports.
3258          */
3259         if (!(phba->hba_flag & HBA_FCOE_MODE)) {
3260                 rc = lpfc_sli_issue_mbox(phba, pmb, MBX_NOWAIT);
3261                 if (rc == MBX_NOT_FINISHED)
3262                         goto out_free_dmabuf;
3263                 return;
3264         }
3265         /*
3266          * For FCoE Mode: fill in all the topology information we need and call
3267          * the READ_TOPOLOGY completion routine to continue without actually
3268          * sending the READ_TOPOLOGY mailbox command to the port.
3269          */
3270         /* Parse and translate status field */
3271         mb = &pmb->u.mb;
3272         mb->mbxStatus = lpfc_sli4_parse_latt_fault(phba, acqe_link);
3273
3274         /* Parse and translate link attention fields */
3275         la = (struct lpfc_mbx_read_top *) &pmb->u.mb.un.varReadTop;
3276         la->eventTag = acqe_link->event_tag;
3277         bf_set(lpfc_mbx_read_top_att_type, la, att_type);
3278         bf_set(lpfc_mbx_read_top_link_spd, la,
3279                lpfc_sli4_parse_latt_link_speed(phba, acqe_link));
3280
3281         /* Fake the the following irrelvant fields */
3282         bf_set(lpfc_mbx_read_top_topology, la, LPFC_TOPOLOGY_PT_PT);
3283         bf_set(lpfc_mbx_read_top_alpa_granted, la, 0);
3284         bf_set(lpfc_mbx_read_top_il, la, 0);
3285         bf_set(lpfc_mbx_read_top_pb, la, 0);
3286         bf_set(lpfc_mbx_read_top_fa, la, 0);
3287         bf_set(lpfc_mbx_read_top_mm, la, 0);
3288
3289         /* Invoke the lpfc_handle_latt mailbox command callback function */
3290         lpfc_mbx_cmpl_read_topology(phba, pmb);
3291
3292         return;
3293
3294 out_free_dmabuf:
3295         kfree(mp);
3296 out_free_pmb:
3297         mempool_free(pmb, phba->mbox_mem_pool);
3298 }
3299
3300 /**
3301  * lpfc_sli4_async_fc_evt - Process the asynchronous FC link event
3302  * @phba: pointer to lpfc hba data structure.
3303  * @acqe_fc: pointer to the async fc completion queue entry.
3304  *
3305  * This routine is to handle the SLI4 asynchronous FC event. It will simply log
3306  * that the event was received and then issue a read_topology mailbox command so
3307  * that the rest of the driver will treat it the same as SLI3.
3308  **/
3309 static void
3310 lpfc_sli4_async_fc_evt(struct lpfc_hba *phba, struct lpfc_acqe_fc_la *acqe_fc)
3311 {
3312         struct lpfc_dmabuf *mp;
3313         LPFC_MBOXQ_t *pmb;
3314         int rc;
3315
3316         if (bf_get(lpfc_trailer_type, acqe_fc) !=
3317             LPFC_FC_LA_EVENT_TYPE_FC_LINK) {
3318                 lpfc_printf_log(phba, KERN_ERR, LOG_SLI,
3319                                 "2895 Non FC link Event detected.(%d)\n",
3320                                 bf_get(lpfc_trailer_type, acqe_fc));
3321                 return;
3322         }
3323         /* Keep the link status for extra SLI4 state machine reference */
3324         phba->sli4_hba.link_state.speed =
3325                                 bf_get(lpfc_acqe_fc_la_speed, acqe_fc);
3326         phba->sli4_hba.link_state.duplex = LPFC_ASYNC_LINK_DUPLEX_FULL;
3327         phba->sli4_hba.link_state.topology =
3328                                 bf_get(lpfc_acqe_fc_la_topology, acqe_fc);
3329         phba->sli4_hba.link_state.status =
3330                                 bf_get(lpfc_acqe_fc_la_att_type, acqe_fc);
3331         phba->sli4_hba.link_state.type =
3332                                 bf_get(lpfc_acqe_fc_la_port_type, acqe_fc);
3333         phba->sli4_hba.link_state.number =
3334                                 bf_get(lpfc_acqe_fc_la_port_number, acqe_fc);
3335         phba->sli4_hba.link_state.fault =
3336                                 bf_get(lpfc_acqe_link_fault, acqe_fc);
3337         phba->sli4_hba.link_state.logical_speed =
3338                                 bf_get(lpfc_acqe_fc_la_llink_spd, acqe_fc);
3339         lpfc_printf_log(phba, KERN_INFO, LOG_SLI,
3340                         "2896 Async FC event - Speed:%dGBaud Topology:x%x "
3341                         "LA Type:x%x Port Type:%d Port Number:%d Logical speed:"
3342                         "%dMbps Fault:%d\n",
3343                         phba->sli4_hba.link_state.speed,
3344                         phba->sli4_hba.link_state.topology,
3345                         phba->sli4_hba.link_state.status,
3346                         phba->sli4_hba.link_state.type,
3347                         phba->sli4_hba.link_state.number,
3348                         phba->sli4_hba.link_state.logical_speed * 10,
3349                         phba->sli4_hba.link_state.fault);
3350         pmb = (LPFC_MBOXQ_t *)mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
3351         if (!pmb) {
3352                 lpfc_printf_log(phba, KERN_ERR, LOG_SLI,
3353                                 "2897 The mboxq allocation failed\n");
3354                 return;
3355         }
3356         mp = kmalloc(sizeof(struct lpfc_dmabuf), GFP_KERNEL);
3357         if (!mp) {
3358                 lpfc_printf_log(phba, KERN_ERR, LOG_SLI,
3359                                 "2898 The lpfc_dmabuf allocation failed\n");
3360                 goto out_free_pmb;
3361         }
3362         mp->virt = lpfc_mbuf_alloc(phba, 0, &mp->phys);
3363         if (!mp->virt) {
3364                 lpfc_printf_log(phba, KERN_ERR, LOG_SLI,
3365                                 "2899 The mbuf allocation failed\n");
3366                 goto out_free_dmabuf;
3367         }
3368
3369         /* Cleanup any outstanding ELS commands */
3370         lpfc_els_flush_all_cmd(phba);
3371
3372         /* Block ELS IOCBs until we have done process link event */
3373         phba->sli.ring[LPFC_ELS_RING].flag |= LPFC_STOP_IOCB_EVENT;
3374
3375         /* Update link event statistics */
3376         phba->sli.slistat.link_event++;
3377
3378         /* Create lpfc_handle_latt mailbox command from link ACQE */
3379         lpfc_read_topology(phba, pmb, mp);
3380         pmb->mbox_cmpl = lpfc_mbx_cmpl_read_topology;
3381         pmb->vport = phba->pport;
3382
3383         rc = lpfc_sli_issue_mbox(phba, pmb, MBX_NOWAIT);
3384         if (rc == MBX_NOT_FINISHED)
3385                 goto out_free_dmabuf;
3386         return;
3387
3388 out_free_dmabuf:
3389         kfree(mp);
3390 out_free_pmb:
3391         mempool_free(pmb, phba->mbox_mem_pool);
3392 }
3393
3394 /**
3395  * lpfc_sli4_async_sli_evt - Process the asynchronous SLI link event
3396  * @phba: pointer to lpfc hba data structure.
3397  * @acqe_fc: pointer to the async SLI completion queue entry.
3398  *
3399  * This routine is to handle the SLI4 asynchronous SLI events.
3400  **/
3401 static void
3402 lpfc_sli4_async_sli_evt(struct lpfc_hba *phba, struct lpfc_acqe_sli *acqe_sli)
3403 {
3404         lpfc_printf_log(phba, KERN_INFO, LOG_SLI,
3405                         "2901 Async SLI event - Event Data1:x%08x Event Data2:"
3406                         "x%08x SLI Event Type:%d",
3407                         acqe_sli->event_data1, acqe_sli->event_data2,
3408                         bf_get(lpfc_trailer_type, acqe_sli));
3409         return;
3410 }
3411
3412 /**
3413  * lpfc_sli4_perform_vport_cvl - Perform clear virtual link on a vport
3414  * @vport: pointer to vport data structure.
3415  *
3416  * This routine is to perform Clear Virtual Link (CVL) on a vport in
3417  * response to a CVL event.
3418  *
3419  * Return the pointer to the ndlp with the vport if successful, otherwise
3420  * return NULL.
3421  **/
3422 static struct lpfc_nodelist *
3423 lpfc_sli4_perform_vport_cvl(struct lpfc_vport *vport)
3424 {
3425         struct lpfc_nodelist *ndlp;
3426         struct Scsi_Host *shost;
3427         struct lpfc_hba *phba;
3428
3429         if (!vport)
3430                 return NULL;
3431         phba = vport->phba;
3432         if (!phba)
3433                 return NULL;
3434         ndlp = lpfc_findnode_did(vport, Fabric_DID);
3435         if (!ndlp) {
3436                 /* Cannot find existing Fabric ndlp, so allocate a new one */
3437                 ndlp = mempool_alloc(phba->nlp_mem_pool, GFP_KERNEL);
3438                 if (!ndlp)
3439                         return 0;
3440                 lpfc_nlp_init(vport, ndlp, Fabric_DID);
3441                 /* Set the node type */
3442                 ndlp->nlp_type |= NLP_FABRIC;
3443                 /* Put ndlp onto node list */
3444                 lpfc_enqueue_node(vport, ndlp);
3445         } else if (!NLP_CHK_NODE_ACT(ndlp)) {
3446                 /* re-setup ndlp without removing from node list */
3447                 ndlp = lpfc_enable_node(vport, ndlp, NLP_STE_UNUSED_NODE);
3448                 if (!ndlp)
3449                         return 0;
3450         }
3451         if ((phba->pport->port_state < LPFC_FLOGI) &&
3452                 (phba->pport->port_state != LPFC_VPORT_FAILED))
3453                 return NULL;
3454         /* If virtual link is not yet instantiated ignore CVL */
3455         if ((vport != phba->pport) && (vport->port_state < LPFC_FDISC)
3456                 && (vport->port_state != LPFC_VPORT_FAILED))
3457                 return NULL;
3458         shost = lpfc_shost_from_vport(vport);
3459         if (!shost)
3460                 return NULL;
3461         lpfc_linkdown_port(vport);
3462         lpfc_cleanup_pending_mbox(vport);
3463         spin_lock_irq(shost->host_lock);
3464         vport->fc_flag |= FC_VPORT_CVL_RCVD;
3465         spin_unlock_irq(shost->host_lock);
3466
3467         return ndlp;
3468 }
3469
3470 /**
3471  * lpfc_sli4_perform_all_vport_cvl - Perform clear virtual link on all vports
3472  * @vport: pointer to lpfc hba data structure.
3473  *
3474  * This routine is to perform Clear Virtual Link (CVL) on all vports in
3475  * response to a FCF dead event.
3476  **/
3477 static void
3478 lpfc_sli4_perform_all_vport_cvl(struct lpfc_hba *phba)
3479 {
3480         struct lpfc_vport **vports;
3481         int i;
3482
3483         vports = lpfc_create_vport_work_array(phba);
3484         if (vports)
3485                 for (i = 0; i <= phba->max_vports && vports[i] != NULL; i++)
3486                         lpfc_sli4_perform_vport_cvl(vports[i]);
3487         lpfc_destroy_vport_work_array(phba, vports);
3488 }
3489
3490 /**
3491  * lpfc_sli4_async_fip_evt - Process the asynchronous FCoE FIP event
3492  * @phba: pointer to lpfc hba data structure.
3493  * @acqe_link: pointer to the async fcoe completion queue entry.
3494  *
3495  * This routine is to handle the SLI4 asynchronous fcoe event.
3496  **/
3497 static void
3498 lpfc_sli4_async_fip_evt(struct lpfc_hba *phba,
3499                         struct lpfc_acqe_fip *acqe_fip)
3500 {
3501         uint8_t event_type = bf_get(lpfc_trailer_type, acqe_fip);
3502         int rc;
3503         struct lpfc_vport *vport;
3504         struct lpfc_nodelist *ndlp;
3505         struct Scsi_Host  *shost;
3506         int active_vlink_present;
3507         struct lpfc_vport **vports;
3508         int i;
3509
3510         phba->fc_eventTag = acqe_fip->event_tag;
3511         phba->fcoe_eventtag = acqe_fip->event_tag;
3512         switch (event_type) {
3513         case LPFC_FIP_EVENT_TYPE_NEW_FCF:
3514         case LPFC_FIP_EVENT_TYPE_FCF_PARAM_MOD:
3515                 if (event_type == LPFC_FIP_EVENT_TYPE_NEW_FCF)
3516                         lpfc_printf_log(phba, KERN_ERR, LOG_FIP |
3517                                         LOG_DISCOVERY,
3518                                         "2546 New FCF event, evt_tag:x%x, "
3519                                         "index:x%x\n",
3520                                         acqe_fip->event_tag,
3521                                         acqe_fip->index);
3522                 else
3523                         lpfc_printf_log(phba, KERN_WARNING, LOG_FIP |
3524                                         LOG_DISCOVERY,
3525                                         "2788 FCF param modified event, "
3526                                         "evt_tag:x%x, index:x%x\n",
3527                                         acqe_fip->event_tag,
3528                                         acqe_fip->index);
3529                 if (phba->fcf.fcf_flag & FCF_DISCOVERY) {
3530                         /*
3531                          * During period of FCF discovery, read the FCF
3532                          * table record indexed by the event to update
3533                          * FCF roundrobin failover eligible FCF bmask.
3534                          */
3535                         lpfc_printf_log(phba, KERN_INFO, LOG_FIP |
3536                                         LOG_DISCOVERY,
3537                                         "2779 Read FCF (x%x) for updating "
3538                                         "roundrobin FCF failover bmask\n",
3539                                         acqe_fip->index);
3540                         rc = lpfc_sli4_read_fcf_rec(phba, acqe_fip->index);
3541                 }
3542
3543                 /* If the FCF discovery is in progress, do nothing. */
3544                 spin_lock_irq(&phba->hbalock);
3545                 if (phba->hba_flag & FCF_TS_INPROG) {
3546                         spin_unlock_irq(&phba->hbalock);
3547                         break;
3548                 }
3549                 /* If fast FCF failover rescan event is pending, do nothing */
3550                 if (phba->fcf.fcf_flag & FCF_REDISC_EVT) {
3551                         spin_unlock_irq(&phba->hbalock);
3552                         break;
3553                 }
3554
3555                 /* If the FCF has been in discovered state, do nothing. */
3556                 if (phba->fcf.fcf_flag & FCF_SCAN_DONE) {
3557                         spin_unlock_irq(&phba->hbalock);
3558                         break;
3559                 }
3560                 spin_unlock_irq(&phba->hbalock);
3561
3562                 /* Otherwise, scan the entire FCF table and re-discover SAN */
3563                 lpfc_printf_log(phba, KERN_INFO, LOG_FIP | LOG_DISCOVERY,
3564                                 "2770 Start FCF table scan per async FCF "
3565                                 "event, evt_tag:x%x, index:x%x\n",
3566                                 acqe_fip->event_tag, acqe_fip->index);
3567                 rc = lpfc_sli4_fcf_scan_read_fcf_rec(phba,
3568                                                      LPFC_FCOE_FCF_GET_FIRST);
3569                 if (rc)
3570                         lpfc_printf_log(phba, KERN_ERR, LOG_FIP | LOG_DISCOVERY,
3571                                         "2547 Issue FCF scan read FCF mailbox "
3572                                         "command failed (x%x)\n", rc);
3573                 break;
3574
3575         case LPFC_FIP_EVENT_TYPE_FCF_TABLE_FULL:
3576                 lpfc_printf_log(phba, KERN_ERR, LOG_SLI,
3577                         "2548 FCF Table full count 0x%x tag 0x%x\n",
3578                         bf_get(lpfc_acqe_fip_fcf_count, acqe_fip),
3579                         acqe_fip->event_tag);
3580                 break;
3581
3582         case LPFC_FIP_EVENT_TYPE_FCF_DEAD:
3583                 lpfc_printf_log(phba, KERN_ERR, LOG_FIP | LOG_DISCOVERY,
3584                         "2549 FCF (x%x) disconnected from network, "
3585                         "tag:x%x\n", acqe_fip->index, acqe_fip->event_tag);
3586                 /*
3587                  * If we are in the middle of FCF failover process, clear
3588                  * the corresponding FCF bit in the roundrobin bitmap.
3589                  */
3590                 spin_lock_irq(&phba->hbalock);
3591                 if (phba->fcf.fcf_flag & FCF_DISCOVERY) {
3592                         spin_unlock_irq(&phba->hbalock);
3593                         /* Update FLOGI FCF failover eligible FCF bmask */
3594                         lpfc_sli4_fcf_rr_index_clear(phba, acqe_fip->index);
3595                         break;
3596                 }
3597                 spin_unlock_irq(&phba->hbalock);
3598
3599                 /* If the event is not for currently used fcf do nothing */
3600                 if (phba->fcf.current_rec.fcf_indx != acqe_fip->index)
3601                         break;
3602
3603                 /*
3604                  * Otherwise, request the port to rediscover the entire FCF
3605                  * table for a fast recovery from case that the current FCF
3606                  * is no longer valid as we are not in the middle of FCF
3607                  * failover process already.
3608                  */
3609                 spin_lock_irq(&phba->hbalock);
3610                 /* Mark the fast failover process in progress */
3611                 phba->fcf.fcf_flag |= FCF_DEAD_DISC;
3612                 spin_unlock_irq(&phba->hbalock);
3613
3614                 lpfc_printf_log(phba, KERN_INFO, LOG_FIP | LOG_DISCOVERY,
3615                                 "2771 Start FCF fast failover process due to "
3616                                 "FCF DEAD event: evt_tag:x%x, fcf_index:x%x "
3617                                 "\n", acqe_fip->event_tag, acqe_fip->index);
3618                 rc = lpfc_sli4_redisc_fcf_table(phba);
3619                 if (rc) {
3620                         lpfc_printf_log(phba, KERN_ERR, LOG_FIP |
3621                                         LOG_DISCOVERY,
3622                                         "2772 Issue FCF rediscover mabilbox "
3623                                         "command failed, fail through to FCF "
3624                                         "dead event\n");
3625                         spin_lock_irq(&phba->hbalock);
3626                         phba->fcf.fcf_flag &= ~FCF_DEAD_DISC;
3627                         spin_unlock_irq(&phba->hbalock);
3628                         /*
3629                          * Last resort will fail over by treating this
3630                          * as a link down to FCF registration.
3631                          */
3632                         lpfc_sli4_fcf_dead_failthrough(phba);
3633                 } else {
3634                         /* Reset FCF roundrobin bmask for new discovery */
3635                         memset(phba->fcf.fcf_rr_bmask, 0,
3636                                sizeof(*phba->fcf.fcf_rr_bmask));
3637                         /*
3638                          * Handling fast FCF failover to a DEAD FCF event is
3639                          * considered equalivant to receiving CVL to all vports.
3640                          */
3641                         lpfc_sli4_perform_all_vport_cvl(phba);
3642                 }
3643                 break;
3644         case LPFC_FIP_EVENT_TYPE_CVL:
3645                 lpfc_printf_log(phba, KERN_ERR, LOG_FIP | LOG_DISCOVERY,
3646                         "2718 Clear Virtual Link Received for VPI 0x%x"
3647                         " tag 0x%x\n", acqe_fip->index, acqe_fip->event_tag);
3648
3649                 vport = lpfc_find_vport_by_vpid(phba,
3650                                 acqe_fip->index - phba->vpi_base);
3651                 ndlp = lpfc_sli4_perform_vport_cvl(vport);
3652                 if (!ndlp)
3653                         break;
3654                 active_vlink_present = 0;
3655
3656                 vports = lpfc_create_vport_work_array(phba);
3657                 if (vports) {
3658                         for (i = 0; i <= phba->max_vports && vports[i] != NULL;
3659                                         i++) {
3660                                 if ((!(vports[i]->fc_flag &
3661                                         FC_VPORT_CVL_RCVD)) &&
3662                                         (vports[i]->port_state > LPFC_FDISC)) {
3663                                         active_vlink_present = 1;
3664                                         break;
3665                                 }
3666                         }
3667                         lpfc_destroy_vport_work_array(phba, vports);
3668                 }
3669
3670                 if (active_vlink_present) {
3671                         /*
3672                          * If there are other active VLinks present,
3673                          * re-instantiate the Vlink using FDISC.
3674                          */
3675                         mod_timer(&ndlp->nlp_delayfunc, jiffies + HZ);
3676                         shost = lpfc_shost_from_vport(vport);
3677                         spin_lock_irq(shost->host_lock);
3678                         ndlp->nlp_flag |= NLP_DELAY_TMO;
3679                         spin_unlock_irq(shost->host_lock);
3680                         ndlp->nlp_last_elscmd = ELS_CMD_FDISC;
3681                         vport->port_state = LPFC_FDISC;
3682                 } else {
3683                         /*
3684                          * Otherwise, we request port to rediscover
3685                          * the entire FCF table for a fast recovery
3686                          * from possible case that the current FCF
3687                          * is no longer valid if we are not already
3688                          * in the FCF failover process.
3689                          */
3690                         spin_lock_irq(&phba->hbalock);
3691                         if (phba->fcf.fcf_flag & FCF_DISCOVERY) {
3692                                 spin_unlock_irq(&phba->hbalock);
3693                                 break;
3694                         }
3695                         /* Mark the fast failover process in progress */
3696                         phba->fcf.fcf_flag |= FCF_ACVL_DISC;
3697                         spin_unlock_irq(&phba->hbalock);
3698                         lpfc_printf_log(phba, KERN_INFO, LOG_FIP |
3699                                         LOG_DISCOVERY,
3700                                         "2773 Start FCF failover per CVL, "
3701                                         "evt_tag:x%x\n", acqe_fip->event_tag);
3702                         rc = lpfc_sli4_redisc_fcf_table(phba);
3703                         if (rc) {
3704                                 lpfc_printf_log(phba, KERN_ERR, LOG_FIP |
3705                                                 LOG_DISCOVERY,
3706                                                 "2774 Issue FCF rediscover "
3707                                                 "mabilbox command failed, "
3708                                                 "through to CVL event\n");
3709                                 spin_lock_irq(&phba->hbalock);
3710                                 phba->fcf.fcf_flag &= ~FCF_ACVL_DISC;
3711                                 spin_unlock_irq(&phba->hbalock);
3712                                 /*
3713                                  * Last resort will be re-try on the
3714                                  * the current registered FCF entry.
3715                                  */
3716                                 lpfc_retry_pport_discovery(phba);
3717                         } else
3718                                 /*
3719                                  * Reset FCF roundrobin bmask for new
3720                                  * discovery.
3721                                  */
3722                                 memset(phba->fcf.fcf_rr_bmask, 0,
3723                                        sizeof(*phba->fcf.fcf_rr_bmask));
3724                 }
3725                 break;
3726         default:
3727                 lpfc_printf_log(phba, KERN_ERR, LOG_SLI,
3728                         "0288 Unknown FCoE event type 0x%x event tag "
3729                         "0x%x\n", event_type, acqe_fip->event_tag);
3730                 break;
3731         }
3732 }
3733
3734 /**
3735  * lpfc_sli4_async_dcbx_evt - Process the asynchronous dcbx event
3736  * @phba: pointer to lpfc hba data structure.
3737  * @acqe_link: pointer to the async dcbx completion queue entry.
3738  *
3739  * This routine is to handle the SLI4 asynchronous dcbx event.
3740  **/
3741 static void
3742 lpfc_sli4_async_dcbx_evt(struct lpfc_hba *phba,
3743                          struct lpfc_acqe_dcbx *acqe_dcbx)
3744 {
3745         phba->fc_eventTag = acqe_dcbx->event_tag;
3746         lpfc_printf_log(phba, KERN_ERR, LOG_SLI,
3747                         "0290 The SLI4 DCBX asynchronous event is not "
3748                         "handled yet\n");
3749 }
3750
3751 /**
3752  * lpfc_sli4_async_grp5_evt - Process the asynchronous group5 event
3753  * @phba: pointer to lpfc hba data structure.
3754  * @acqe_link: pointer to the async grp5 completion queue entry.
3755  *
3756  * This routine is to handle the SLI4 asynchronous grp5 event. A grp5 event
3757  * is an asynchronous notified of a logical link speed change.  The Port
3758  * reports the logical link speed in units of 10Mbps.
3759  **/
3760 static void
3761 lpfc_sli4_async_grp5_evt(struct lpfc_hba *phba,
3762                          struct lpfc_acqe_grp5 *acqe_grp5)
3763 {
3764         uint16_t prev_ll_spd;
3765
3766         phba->fc_eventTag = acqe_grp5->event_tag;
3767         phba->fcoe_eventtag = acqe_grp5->event_tag;
3768         prev_ll_spd = phba->sli4_hba.link_state.logical_speed;
3769         phba->sli4_hba.link_state.logical_speed =
3770                 (bf_get(lpfc_acqe_grp5_llink_spd, acqe_grp5));
3771         lpfc_printf_log(phba, KERN_INFO, LOG_SLI,
3772                         "2789 GRP5 Async Event: Updating logical link speed "
3773                         "from %dMbps to %dMbps\n", (prev_ll_spd * 10),
3774                         (phba->sli4_hba.link_state.logical_speed*10));
3775 }
3776
3777 /**
3778  * lpfc_sli4_async_event_proc - Process all the pending asynchronous event
3779  * @phba: pointer to lpfc hba data structure.
3780  *
3781  * This routine is invoked by the worker thread to process all the pending
3782  * SLI4 asynchronous events.
3783  **/
3784 void lpfc_sli4_async_event_proc(struct lpfc_hba *phba)
3785 {
3786         struct lpfc_cq_event *cq_event;
3787
3788         /* First, declare the async event has been handled */
3789         spin_lock_irq(&phba->hbalock);
3790         phba->hba_flag &= ~ASYNC_EVENT;
3791         spin_unlock_irq(&phba->hbalock);
3792         /* Now, handle all the async events */
3793         while (!list_empty(&phba->sli4_hba.sp_asynce_work_queue)) {
3794                 /* Get the first event from the head of the event queue */
3795                 spin_lock_irq(&phba->hbalock);
3796                 list_remove_head(&phba->sli4_hba.sp_asynce_work_queue,
3797                                  cq_event, struct lpfc_cq_event, list);
3798                 spin_unlock_irq(&phba->hbalock);
3799                 /* Process the asynchronous event */
3800                 switch (bf_get(lpfc_trailer_code, &cq_event->cqe.mcqe_cmpl)) {
3801                 case LPFC_TRAILER_CODE_LINK:
3802                         lpfc_sli4_async_link_evt(phba,
3803                                                  &cq_event->cqe.acqe_link);
3804                         break;
3805                 case LPFC_TRAILER_CODE_FCOE:
3806                         lpfc_sli4_async_fip_evt(phba, &cq_event->cqe.acqe_fip);
3807                         break;
3808                 case LPFC_TRAILER_CODE_DCBX:
3809                         lpfc_sli4_async_dcbx_evt(phba,
3810                                                  &cq_event->cqe.acqe_dcbx);
3811                         break;
3812                 case LPFC_TRAILER_CODE_GRP5:
3813                         lpfc_sli4_async_grp5_evt(phba,
3814                                                  &cq_event->cqe.acqe_grp5);
3815                         break;
3816                 case LPFC_TRAILER_CODE_FC:
3817                         lpfc_sli4_async_fc_evt(phba, &cq_event->cqe.acqe_fc);
3818                         break;
3819                 case LPFC_TRAILER_CODE_SLI:
3820                         lpfc_sli4_async_sli_evt(phba, &cq_event->cqe.acqe_sli);
3821                         break;
3822                 default:
3823                         lpfc_printf_log(phba, KERN_ERR, LOG_SLI,
3824                                         "1804 Invalid asynchrous event code: "
3825                                         "x%x\n", bf_get(lpfc_trailer_code,
3826                                         &cq_event->cqe.mcqe_cmpl));
3827                         break;
3828                 }
3829                 /* Free the completion event processed to the free pool */
3830                 lpfc_sli4_cq_event_release(phba, cq_event);
3831         }
3832 }
3833
3834 /**
3835  * lpfc_sli4_fcf_redisc_event_proc - Process fcf table rediscovery event
3836  * @phba: pointer to lpfc hba data structure.
3837  *
3838  * This routine is invoked by the worker thread to process FCF table
3839  * rediscovery pending completion event.
3840  **/
3841 void lpfc_sli4_fcf_redisc_event_proc(struct lpfc_hba *phba)
3842 {
3843         int rc;
3844
3845         spin_lock_irq(&phba->hbalock);
3846         /* Clear FCF rediscovery timeout event */
3847         phba->fcf.fcf_flag &= ~FCF_REDISC_EVT;
3848         /* Clear driver fast failover FCF record flag */
3849         phba->fcf.failover_rec.flag = 0;
3850         /* Set state for FCF fast failover */
3851         phba->fcf.fcf_flag |= FCF_REDISC_FOV;
3852         spin_unlock_irq(&phba->hbalock);
3853
3854         /* Scan FCF table from the first entry to re-discover SAN */
3855         lpfc_printf_log(phba, KERN_INFO, LOG_FIP | LOG_DISCOVERY,
3856                         "2777 Start post-quiescent FCF table scan\n");
3857         rc = lpfc_sli4_fcf_scan_read_fcf_rec(phba, LPFC_FCOE_FCF_GET_FIRST);
3858         if (rc)
3859                 lpfc_printf_log(phba, KERN_ERR, LOG_FIP | LOG_DISCOVERY,
3860                                 "2747 Issue FCF scan read FCF mailbox "
3861                                 "command failed 0x%x\n", rc);
3862 }
3863
3864 /**
3865  * lpfc_api_table_setup - Set up per hba pci-device group func api jump table
3866  * @phba: pointer to lpfc hba data structure.
3867  * @dev_grp: The HBA PCI-Device group number.
3868  *
3869  * This routine is invoked to set up the per HBA PCI-Device group function
3870  * API jump table entries.
3871  *
3872  * Return: 0 if success, otherwise -ENODEV
3873  **/
3874 int
3875 lpfc_api_table_setup(struct lpfc_hba *phba, uint8_t dev_grp)
3876 {
3877         int rc;
3878
3879         /* Set up lpfc PCI-device group */
3880         phba->pci_dev_grp = dev_grp;
3881
3882         /* The LPFC_PCI_DEV_OC uses SLI4 */
3883         if (dev_grp == LPFC_PCI_DEV_OC)
3884                 phba->sli_rev = LPFC_SLI_REV4;
3885
3886         /* Set up device INIT API function jump table */
3887         rc = lpfc_init_api_table_setup(phba, dev_grp);
3888         if (rc)
3889                 return -ENODEV;
3890         /* Set up SCSI API function jump table */
3891         rc = lpfc_scsi_api_table_setup(phba, dev_grp);
3892         if (rc)
3893                 return -ENODEV;
3894         /* Set up SLI API function jump table */
3895         rc = lpfc_sli_api_table_setup(phba, dev_grp);
3896         if (rc)
3897                 return -ENODEV;
3898         /* Set up MBOX API function jump table */
3899         rc = lpfc_mbox_api_table_setup(phba, dev_grp);
3900         if (rc)
3901                 return -ENODEV;
3902
3903         return 0;
3904 }
3905
3906 /**
3907  * lpfc_log_intr_mode - Log the active interrupt mode
3908  * @phba: pointer to lpfc hba data structure.
3909  * @intr_mode: active interrupt mode adopted.
3910  *
3911  * This routine it invoked to log the currently used active interrupt mode
3912  * to the device.
3913  **/
3914 static void lpfc_log_intr_mode(struct lpfc_hba *phba, uint32_t intr_mode)
3915 {
3916         switch (intr_mode) {
3917         case 0:
3918                 lpfc_printf_log(phba, KERN_INFO, LOG_INIT,
3919                                 "0470 Enable INTx interrupt mode.\n");
3920                 break;
3921         case 1:
3922                 lpfc_printf_log(phba, KERN_INFO, LOG_INIT,
3923                                 "0481 Enabled MSI interrupt mode.\n");
3924                 break;
3925         case 2:
3926                 lpfc_printf_log(phba, KERN_INFO, LOG_INIT,
3927                                 "0480 Enabled MSI-X interrupt mode.\n");
3928                 break;
3929         default:
3930                 lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
3931                                 "0482 Illegal interrupt mode.\n");
3932                 break;
3933         }
3934         return;
3935 }
3936
3937 /**
3938  * lpfc_enable_pci_dev - Enable a generic PCI device.
3939  * @phba: pointer to lpfc hba data structure.
3940  *
3941  * This routine is invoked to enable the PCI device that is common to all
3942  * PCI devices.
3943  *
3944  * Return codes
3945  *      0 - successful
3946  *      other values - error
3947  **/
3948 static int
3949 lpfc_enable_pci_dev(struct lpfc_hba *phba)
3950 {
3951         struct pci_dev *pdev;
3952         int bars;
3953
3954         /* Obtain PCI device reference */
3955         if (!phba->pcidev)
3956                 goto out_error;
3957         else
3958                 pdev = phba->pcidev;
3959         /* Select PCI BARs */
3960         bars = pci_select_bars(pdev, IORESOURCE_MEM);
3961         /* Enable PCI device */
3962         if (pci_enable_device_mem(pdev))
3963                 goto out_error;
3964         /* Request PCI resource for the device */
3965         if (pci_request_selected_regions(pdev, bars, LPFC_DRIVER_NAME))
3966                 goto out_disable_device;
3967         /* Set up device as PCI master and save state for EEH */
3968         pci_set_master(pdev);
3969         pci_try_set_mwi(pdev);
3970         pci_save_state(pdev);
3971
3972         /* PCIe EEH recovery on powerpc platforms needs fundamental reset */
3973         if (pci_find_capability(pdev, PCI_CAP_ID_EXP))
3974                 pdev->needs_freset = 1;
3975
3976         return 0;
3977
3978 out_disable_device:
3979         pci_disable_device(pdev);
3980 out_error:
3981         return -ENODEV;
3982 }
3983
3984 /**
3985  * lpfc_disable_pci_dev - Disable a generic PCI device.
3986  * @phba: pointer to lpfc hba data structure.
3987  *
3988  * This routine is invoked to disable the PCI device that is common to all
3989  * PCI devices.
3990  **/
3991 static void
3992 lpfc_disable_pci_dev(struct lpfc_hba *phba)
3993 {
3994         struct pci_dev *pdev;
3995         int bars;
3996
3997         /* Obtain PCI device reference */
3998         if (!phba->pcidev)
3999                 return;
4000         else
4001                 pdev = phba->pcidev;
4002         /* Select PCI BARs */
4003         bars = pci_select_bars(pdev, IORESOURCE_MEM);
4004         /* Release PCI resource and disable PCI device */
4005         pci_release_selected_regions(pdev, bars);
4006         pci_disable_device(pdev);
4007         /* Null out PCI private reference to driver */
4008         pci_set_drvdata(pdev, NULL);
4009
4010         return;
4011 }
4012
4013 /**
4014  * lpfc_reset_hba - Reset a hba
4015  * @phba: pointer to lpfc hba data structure.
4016  *
4017  * This routine is invoked to reset a hba device. It brings the HBA
4018  * offline, performs a board restart, and then brings the board back
4019  * online. The lpfc_offline calls lpfc_sli_hba_down which will clean up
4020  * on outstanding mailbox commands.
4021  **/
4022 void
4023 lpfc_reset_hba(struct lpfc_hba *phba)
4024 {
4025         /* If resets are disabled then set error state and return. */
4026         if (!phba->cfg_enable_hba_reset) {
4027                 phba->link_state = LPFC_HBA_ERROR;
4028                 return;
4029         }
4030         lpfc_offline_prep(phba);
4031         lpfc_offline(phba);
4032         lpfc_sli_brdrestart(phba);
4033         lpfc_online(phba);
4034         lpfc_unblock_mgmt_io(phba);
4035 }
4036
4037 /**
4038  * lpfc_sli_probe_sriov_nr_virtfn - Enable a number of sr-iov virtual functions
4039  * @phba: pointer to lpfc hba data structure.
4040  * @nr_vfn: number of virtual functions to be enabled.
4041  *
4042  * This function enables the PCI SR-IOV virtual functions to a physical
4043  * function. It invokes the PCI SR-IOV api with the @nr_vfn provided to
4044  * enable the number of virtual functions to the physical function. As
4045  * not all devices support SR-IOV, the return code from the pci_enable_sriov()
4046  * API call does not considered as an error condition for most of the device.
4047  **/
4048 int
4049 lpfc_sli_probe_sriov_nr_virtfn(struct lpfc_hba *phba, int nr_vfn)
4050 {
4051         struct pci_dev *pdev = phba->pcidev;
4052         int rc;
4053
4054         rc = pci_enable_sriov(pdev, nr_vfn);
4055         if (rc) {
4056                 lpfc_printf_log(phba, KERN_WARNING, LOG_INIT,
4057                                 "2806 Failed to enable sriov on this device "
4058                                 "with vfn number nr_vf:%d, rc:%d\n",
4059                                 nr_vfn, rc);
4060         } else
4061                 lpfc_printf_log(phba, KERN_WARNING, LOG_INIT,
4062                                 "2807 Successful enable sriov on this device "
4063                                 "with vfn number nr_vf:%d\n", nr_vfn);
4064         return rc;
4065 }
4066
4067 /**
4068  * lpfc_sli_driver_resource_setup - Setup driver internal resources for SLI3 dev.
4069  * @phba: pointer to lpfc hba data structure.
4070  *
4071  * This routine is invoked to set up the driver internal resources specific to
4072  * support the SLI-3 HBA device it attached to.
4073  *
4074  * Return codes
4075  *      0 - successful
4076  *      other values - error
4077  **/
4078 static int
4079 lpfc_sli_driver_resource_setup(struct lpfc_hba *phba)
4080 {
4081         struct lpfc_sli *psli;
4082         int rc;
4083
4084         /*
4085          * Initialize timers used by driver
4086          */
4087
4088         /* Heartbeat timer */
4089         init_timer(&phba->hb_tmofunc);
4090         phba->hb_tmofunc.function = lpfc_hb_timeout;
4091         phba->hb_tmofunc.data = (unsigned long)phba;
4092
4093         psli = &phba->sli;
4094         /* MBOX heartbeat timer */
4095         init_timer(&psli->mbox_tmo);
4096         psli->mbox_tmo.function = lpfc_mbox_timeout;
4097         psli->mbox_tmo.data = (unsigned long) phba;
4098         /* FCP polling mode timer */
4099         init_timer(&phba->fcp_poll_timer);
4100         phba->fcp_poll_timer.function = lpfc_poll_timeout;
4101         phba->fcp_poll_timer.data = (unsigned long) phba;
4102         /* Fabric block timer */
4103         init_timer(&phba->fabric_block_timer);
4104         phba->fabric_block_timer.function = lpfc_fabric_block_timeout;
4105         phba->fabric_block_timer.data = (unsigned long) phba;
4106         /* EA polling mode timer */
4107         init_timer(&phba->eratt_poll);
4108         phba->eratt_poll.function = lpfc_poll_eratt;
4109         phba->eratt_poll.data = (unsigned long) phba;
4110
4111         /* Host attention work mask setup */
4112         phba->work_ha_mask = (HA_ERATT | HA_MBATT | HA_LATT);
4113         phba->work_ha_mask |= (HA_RXMASK << (LPFC_ELS_RING * 4));
4114
4115         /* Get all the module params for configuring this host */
4116         lpfc_get_cfgparam(phba);
4117         if (phba->pcidev->device == PCI_DEVICE_ID_HORNET) {
4118                 phba->menlo_flag |= HBA_MENLO_SUPPORT;
4119                 /* check for menlo minimum sg count */
4120                 if (phba->cfg_sg_seg_cnt < LPFC_DEFAULT_MENLO_SG_SEG_CNT)
4121                         phba->cfg_sg_seg_cnt = LPFC_DEFAULT_MENLO_SG_SEG_CNT;
4122         }
4123
4124         /*
4125          * Since the sg_tablesize is module parameter, the sg_dma_buf_size
4126          * used to create the sg_dma_buf_pool must be dynamically calculated.
4127          * 2 segments are added since the IOCB needs a command and response bde.
4128          */
4129         phba->cfg_sg_dma_buf_size = sizeof(struct fcp_cmnd) +
4130                 sizeof(struct fcp_rsp) +
4131                         ((phba->cfg_sg_seg_cnt + 2) * sizeof(struct ulp_bde64));
4132
4133         if (phba->cfg_enable_bg) {
4134                 phba->cfg_sg_seg_cnt = LPFC_MAX_SG_SEG_CNT;
4135                 phba->cfg_sg_dma_buf_size +=
4136                         phba->cfg_prot_sg_seg_cnt * sizeof(struct ulp_bde64);
4137         }
4138
4139         /* Also reinitialize the host templates with new values. */
4140         lpfc_vport_template.sg_tablesize = phba->cfg_sg_seg_cnt;
4141         lpfc_template.sg_tablesize = phba->cfg_sg_seg_cnt;
4142
4143         phba->max_vpi = LPFC_MAX_VPI;
4144         /* This will be set to correct value after config_port mbox */
4145         phba->max_vports = 0;
4146
4147         /*
4148          * Initialize the SLI Layer to run with lpfc HBAs.
4149          */
4150         lpfc_sli_setup(phba);
4151         lpfc_sli_queue_setup(phba);
4152
4153         /* Allocate device driver memory */
4154         if (lpfc_mem_alloc(phba, BPL_ALIGN_SZ))
4155                 return -ENOMEM;
4156
4157         /*
4158          * Enable sr-iov virtual functions if supported and configured
4159          * through the module parameter.
4160          */
4161         if (phba->cfg_sriov_nr_virtfn > 0) {
4162                 rc = lpfc_sli_probe_sriov_nr_virtfn(phba,
4163                                                  phba->cfg_sriov_nr_virtfn);
4164                 if (rc) {
4165                         lpfc_printf_log(phba, KERN_WARNING, LOG_INIT,
4166                                         "2808 Requested number of SR-IOV "
4167                                         "virtual functions (%d) is not "
4168                                         "supported\n",
4169                                         phba->cfg_sriov_nr_virtfn);
4170                         phba->cfg_sriov_nr_virtfn = 0;
4171                 }
4172         }
4173
4174         return 0;
4175 }
4176
4177 /**
4178  * lpfc_sli_driver_resource_unset - Unset drvr internal resources for SLI3 dev
4179  * @phba: pointer to lpfc hba data structure.
4180  *
4181  * This routine is invoked to unset the driver internal resources set up
4182  * specific for supporting the SLI-3 HBA device it attached to.
4183  **/
4184 static void
4185 lpfc_sli_driver_resource_unset(struct lpfc_hba *phba)
4186 {
4187         /* Free device driver memory allocated */
4188         lpfc_mem_free_all(phba);
4189
4190         return;
4191 }
4192
4193 /**
4194  * lpfc_sli4_driver_resource_setup - Setup drvr internal resources for SLI4 dev
4195  * @phba: pointer to lpfc hba data structure.
4196  *
4197  * This routine is invoked to set up the driver internal resources specific to
4198  * support the SLI-4 HBA device it attached to.
4199  *
4200  * Return codes
4201  *      0 - successful
4202  *      other values - error
4203  **/
4204 static int
4205 lpfc_sli4_driver_resource_setup(struct lpfc_hba *phba)
4206 {
4207         struct lpfc_sli *psli;
4208         LPFC_MBOXQ_t *mboxq;
4209         int rc, i, hbq_count, buf_size, dma_buf_size, max_buf_size;
4210         uint8_t pn_page[LPFC_MAX_SUPPORTED_PAGES] = {0};
4211         struct lpfc_mqe *mqe;
4212         int longs, sli_family;
4213
4214         /* Before proceed, wait for POST done and device ready */
4215         rc = lpfc_sli4_post_status_check(phba);
4216         if (rc)
4217                 return -ENODEV;
4218
4219         /*
4220          * Initialize timers used by driver
4221          */
4222
4223         /* Heartbeat timer */
4224         init_timer(&phba->hb_tmofunc);
4225         phba->hb_tmofunc.function = lpfc_hb_timeout;
4226         phba->hb_tmofunc.data = (unsigned long)phba;
4227         init_timer(&phba->rrq_tmr);
4228         phba->rrq_tmr.function = lpfc_rrq_timeout;
4229         phba->rrq_tmr.data = (unsigned long)phba;
4230
4231         psli = &phba->sli;
4232         /* MBOX heartbeat timer */
4233         init_timer(&psli->mbox_tmo);
4234         psli->mbox_tmo.function = lpfc_mbox_timeout;
4235         psli->mbox_tmo.data = (unsigned long) phba;
4236         /* Fabric block timer */
4237         init_timer(&phba->fabric_block_timer);
4238         phba->fabric_block_timer.function = lpfc_fabric_block_timeout;
4239         phba->fabric_block_timer.data = (unsigned long) phba;
4240         /* EA polling mode timer */
4241         init_timer(&phba->eratt_poll);
4242         phba->eratt_poll.function = lpfc_poll_eratt;
4243         phba->eratt_poll.data = (unsigned long) phba;
4244         /* FCF rediscover timer */
4245         init_timer(&phba->fcf.redisc_wait);
4246         phba->fcf.redisc_wait.function = lpfc_sli4_fcf_redisc_wait_tmo;
4247         phba->fcf.redisc_wait.data = (unsigned long)phba;
4248
4249         /*
4250          * We need to do a READ_CONFIG mailbox command here before
4251          * calling lpfc_get_cfgparam. For VFs this will report the
4252          * MAX_XRI, MAX_VPI, MAX_RPI, MAX_IOCB, and MAX_VFI settings.
4253          * All of the resources allocated
4254          * for this Port are tied to these values.
4255          */
4256         /* Get all the module params for configuring this host */
4257         lpfc_get_cfgparam(phba);
4258         phba->max_vpi = LPFC_MAX_VPI;
4259         /* This will be set to correct value after the read_config mbox */
4260         phba->max_vports = 0;
4261
4262         /* Program the default value of vlan_id and fc_map */
4263         phba->valid_vlan = 0;
4264         phba->fc_map[0] = LPFC_FCOE_FCF_MAP0;
4265         phba->fc_map[1] = LPFC_FCOE_FCF_MAP1;
4266         phba->fc_map[2] = LPFC_FCOE_FCF_MAP2;
4267
4268         /*
4269          * Since the sg_tablesize is module parameter, the sg_dma_buf_size
4270          * used to create the sg_dma_buf_pool must be dynamically calculated.
4271          * 2 segments are added since the IOCB needs a command and response bde.
4272          * To insure that the scsi sgl does not cross a 4k page boundary only
4273          * sgl sizes of must be a power of 2.
4274          */
4275         buf_size = (sizeof(struct fcp_cmnd) + sizeof(struct fcp_rsp) +
4276                     ((phba->cfg_sg_seg_cnt + 2) * sizeof(struct sli4_sge)));
4277
4278         sli_family = bf_get(lpfc_sli_intf_sli_family, &phba->sli4_hba.sli_intf);
4279         max_buf_size = LPFC_SLI4_MAX_BUF_SIZE;
4280         switch (sli_family) {
4281         case LPFC_SLI_INTF_FAMILY_BE2:
4282         case LPFC_SLI_INTF_FAMILY_BE3:
4283                 /* There is a single hint for BE - 2 pages per BPL. */
4284                 if (bf_get(lpfc_sli_intf_sli_hint1, &phba->sli4_hba.sli_intf) ==
4285                     LPFC_SLI_INTF_SLI_HINT1_1)
4286                         max_buf_size = LPFC_SLI4_FL1_MAX_BUF_SIZE;
4287                 break;
4288         case LPFC_SLI_INTF_FAMILY_LNCR_A0:
4289         case LPFC_SLI_INTF_FAMILY_LNCR_B0:
4290         default:
4291                 break;
4292         }
4293         for (dma_buf_size = LPFC_SLI4_MIN_BUF_SIZE;
4294              dma_buf_size < max_buf_size && buf_size > dma_buf_size;
4295              dma_buf_size = dma_buf_size << 1)
4296                 ;
4297         if (dma_buf_size == max_buf_size)
4298                 phba->cfg_sg_seg_cnt = (dma_buf_size -
4299                         sizeof(struct fcp_cmnd) - sizeof(struct fcp_rsp) -
4300                         (2 * sizeof(struct sli4_sge))) /
4301                                 sizeof(struct sli4_sge);
4302         phba->cfg_sg_dma_buf_size = dma_buf_size;
4303
4304         /* Initialize buffer queue management fields */
4305         hbq_count = lpfc_sli_hbq_count();
4306         for (i = 0; i < hbq_count; ++i)
4307                 INIT_LIST_HEAD(&phba->hbqs[i].hbq_buffer_list);
4308         INIT_LIST_HEAD(&phba->rb_pend_list);
4309         phba->hbqs[LPFC_ELS_HBQ].hbq_alloc_buffer = lpfc_sli4_rb_alloc;
4310         phba->hbqs[LPFC_ELS_HBQ].hbq_free_buffer = lpfc_sli4_rb_free;
4311
4312         /*
4313          * Initialize the SLI Layer to run with lpfc SLI4 HBAs.
4314          */
4315         /* Initialize the Abort scsi buffer list used by driver */
4316         spin_lock_init(&phba->sli4_hba.abts_scsi_buf_list_lock);
4317         INIT_LIST_HEAD(&phba->sli4_hba.lpfc_abts_scsi_buf_list);
4318         /* This abort list used by worker thread */
4319         spin_lock_init(&phba->sli4_hba.abts_sgl_list_lock);
4320
4321         /*
4322          * Initialize driver internal slow-path work queues
4323          */
4324
4325         /* Driver internel slow-path CQ Event pool */
4326         INIT_LIST_HEAD(&phba->sli4_hba.sp_cqe_event_pool);
4327         /* Response IOCB work queue list */
4328         INIT_LIST_HEAD(&phba->sli4_hba.sp_queue_event);
4329         /* Asynchronous event CQ Event work queue list */
4330         INIT_LIST_HEAD(&phba->sli4_hba.sp_asynce_work_queue);
4331         /* Fast-path XRI aborted CQ Event work queue list */
4332         INIT_LIST_HEAD(&phba->sli4_hba.sp_fcp_xri_aborted_work_queue);
4333         /* Slow-path XRI aborted CQ Event work queue list */
4334         INIT_LIST_HEAD(&phba->sli4_hba.sp_els_xri_aborted_work_queue);
4335         /* Receive queue CQ Event work queue list */
4336         INIT_LIST_HEAD(&phba->sli4_hba.sp_unsol_work_queue);
4337
4338         /* Initialize extent block lists. */
4339         INIT_LIST_HEAD(&phba->sli4_hba.lpfc_rpi_blk_list);
4340         INIT_LIST_HEAD(&phba->sli4_hba.lpfc_xri_blk_list);
4341         INIT_LIST_HEAD(&phba->sli4_hba.lpfc_vfi_blk_list);
4342         INIT_LIST_HEAD(&phba->lpfc_vpi_blk_list);
4343
4344         /* Initialize the driver internal SLI layer lists. */
4345         lpfc_sli_setup(phba);
4346         lpfc_sli_queue_setup(phba);
4347
4348         /* Allocate device driver memory */
4349         rc = lpfc_mem_alloc(phba, SGL_ALIGN_SZ);
4350         if (rc)
4351                 return -ENOMEM;
4352
4353         /* IF Type 2 ports get initialized now. */
4354         if (bf_get(lpfc_sli_intf_if_type, &phba->sli4_hba.sli_intf) ==
4355             LPFC_SLI_INTF_IF_TYPE_2) {
4356                 rc = lpfc_pci_function_reset(phba);
4357                 if (unlikely(rc))
4358                         return -ENODEV;
4359         }
4360
4361         /* Create the bootstrap mailbox command */
4362         rc = lpfc_create_bootstrap_mbox(phba);
4363         if (unlikely(rc))
4364                 goto out_free_mem;
4365
4366         /* Set up the host's endian order with the device. */
4367         rc = lpfc_setup_endian_order(phba);
4368         if (unlikely(rc))
4369                 goto out_free_bsmbx;
4370
4371         /* Set up the hba's configuration parameters. */
4372         rc = lpfc_sli4_read_config(phba);
4373         if (unlikely(rc))
4374                 goto out_free_bsmbx;
4375
4376         /* IF Type 0 ports get initialized now. */
4377         if (bf_get(lpfc_sli_intf_if_type, &phba->sli4_hba.sli_intf) ==
4378             LPFC_SLI_INTF_IF_TYPE_0) {
4379                 rc = lpfc_pci_function_reset(phba);
4380                 if (unlikely(rc))
4381                         goto out_free_bsmbx;
4382         }
4383
4384         mboxq = (LPFC_MBOXQ_t *) mempool_alloc(phba->mbox_mem_pool,
4385                                                        GFP_KERNEL);
4386         if (!mboxq) {
4387                 rc = -ENOMEM;
4388                 goto out_free_bsmbx;
4389         }
4390
4391         /* Get the Supported Pages if PORT_CAPABILITIES is supported by port. */
4392         lpfc_supported_pages(mboxq);
4393         rc = lpfc_sli_issue_mbox(phba, mboxq, MBX_POLL);
4394         if (!rc) {
4395                 mqe = &mboxq->u.mqe;
4396                 memcpy(&pn_page[0], ((uint8_t *)&mqe->un.supp_pages.word3),
4397                        LPFC_MAX_SUPPORTED_PAGES);
4398                 for (i = 0; i < LPFC_MAX_SUPPORTED_PAGES; i++) {
4399                         switch (pn_page[i]) {
4400                         case LPFC_SLI4_PARAMETERS:
4401                                 phba->sli4_hba.pc_sli4_params.supported = 1;
4402                                 break;
4403                         default:
4404                                 break;
4405                         }
4406                 }
4407                 /* Read the port's SLI4 Parameters capabilities if supported. */
4408                 if (phba->sli4_hba.pc_sli4_params.supported)
4409                         rc = lpfc_pc_sli4_params_get(phba, mboxq);
4410                 if (rc) {
4411                         mempool_free(mboxq, phba->mbox_mem_pool);
4412                         rc = -EIO;
4413                         goto out_free_bsmbx;
4414                 }
4415         }
4416         /*
4417          * Get sli4 parameters that override parameters from Port capabilities.
4418          * If this call fails, it isn't critical unless the SLI4 parameters come
4419          * back in conflict.
4420          */
4421         rc = lpfc_get_sli4_parameters(phba, mboxq);
4422         if (rc) {
4423                 if (phba->sli4_hba.extents_in_use &&
4424                     phba->sli4_hba.rpi_hdrs_in_use) {
4425                         lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
4426                                 "2999 Unsupported SLI4 Parameters "
4427                                 "Extents and RPI headers enabled.\n");
4428                         goto out_free_bsmbx;
4429                 }
4430         }
4431         mempool_free(mboxq, phba->mbox_mem_pool);
4432         /* Create all the SLI4 queues */
4433         rc = lpfc_sli4_queue_create(phba);
4434         if (rc)
4435                 goto out_free_bsmbx;
4436
4437         /* Create driver internal CQE event pool */
4438         rc = lpfc_sli4_cq_event_pool_create(phba);
4439         if (rc)
4440                 goto out_destroy_queue;
4441
4442         /* Initialize and populate the iocb list per host */
4443         rc = lpfc_init_sgl_list(phba);
4444         if (rc) {
4445                 lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
4446                                 "1400 Failed to initialize sgl list.\n");
4447                 goto out_destroy_cq_event_pool;
4448         }
4449         rc = lpfc_init_active_sgl_array(phba);
4450         if (rc) {
4451                 lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
4452                                 "1430 Failed to initialize sgl list.\n");
4453                 goto out_free_sgl_list;
4454         }
4455         rc = lpfc_sli4_init_rpi_hdrs(phba);
4456         if (rc) {
4457                 lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
4458                                 "1432 Failed to initialize rpi headers.\n");
4459                 goto out_free_active_sgl;
4460         }
4461
4462         /* Allocate eligible FCF bmask memory for FCF roundrobin failover */
4463         longs = (LPFC_SLI4_FCF_TBL_INDX_MAX + BITS_PER_LONG - 1)/BITS_PER_LONG;
4464         phba->fcf.fcf_rr_bmask = kzalloc(longs * sizeof(unsigned long),
4465                                          GFP_KERNEL);
4466         if (!phba->fcf.fcf_rr_bmask) {
4467                 lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
4468                                 "2759 Failed allocate memory for FCF round "
4469                                 "robin failover bmask\n");
4470                 rc = -ENOMEM;
4471                 goto out_remove_rpi_hdrs;
4472         }
4473
4474         phba->sli4_hba.fcp_eq_hdl = kzalloc((sizeof(struct lpfc_fcp_eq_hdl) *
4475                                     phba->cfg_fcp_eq_count), GFP_KERNEL);
4476         if (!phba->sli4_hba.fcp_eq_hdl) {
4477                 lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
4478                                 "2572 Failed allocate memory for fast-path "
4479                                 "per-EQ handle array\n");
4480                 rc = -ENOMEM;
4481                 goto out_free_fcf_rr_bmask;
4482         }
4483
4484         phba->sli4_hba.msix_entries = kzalloc((sizeof(struct msix_entry) *
4485                                       phba->sli4_hba.cfg_eqn), GFP_KERNEL);
4486         if (!phba->sli4_hba.msix_entries) {
4487                 lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
4488                                 "2573 Failed allocate memory for msi-x "
4489                                 "interrupt vector entries\n");
4490                 rc = -ENOMEM;
4491                 goto out_free_fcp_eq_hdl;
4492         }
4493
4494         /*
4495          * Enable sr-iov virtual functions if supported and configured
4496          * through the module parameter.
4497          */
4498         if (phba->cfg_sriov_nr_virtfn > 0) {
4499                 rc = lpfc_sli_probe_sriov_nr_virtfn(phba,
4500                                                  phba->cfg_sriov_nr_virtfn);
4501                 if (rc) {
4502                         lpfc_printf_log(phba, KERN_WARNING, LOG_INIT,
4503                                         "3020 Requested number of SR-IOV "
4504                                         "virtual functions (%d) is not "
4505                                         "supported\n",
4506                                         phba->cfg_sriov_nr_virtfn);
4507                         phba->cfg_sriov_nr_virtfn = 0;
4508                 }
4509         }
4510
4511         return rc;
4512
4513 out_free_fcp_eq_hdl:
4514         kfree(phba->sli4_hba.fcp_eq_hdl);
4515 out_free_fcf_rr_bmask:
4516         kfree(phba->fcf.fcf_rr_bmask);
4517 out_remove_rpi_hdrs:
4518         lpfc_sli4_remove_rpi_hdrs(phba);
4519 out_free_active_sgl:
4520         lpfc_free_active_sgl(phba);
4521 out_free_sgl_list:
4522         lpfc_free_sgl_list(phba);
4523 out_destroy_cq_event_pool:
4524         lpfc_sli4_cq_event_pool_destroy(phba);
4525 out_destroy_queue:
4526         lpfc_sli4_queue_destroy(phba);
4527 out_free_bsmbx:
4528         lpfc_destroy_bootstrap_mbox(phba);
4529 out_free_mem:
4530         lpfc_mem_free(phba);
4531         return rc;
4532 }
4533
4534 /**
4535  * lpfc_sli4_driver_resource_unset - Unset drvr internal resources for SLI4 dev
4536  * @phba: pointer to lpfc hba data structure.
4537  *
4538  * This routine is invoked to unset the driver internal resources set up
4539  * specific for supporting the SLI-4 HBA device it attached to.
4540  **/
4541 static void
4542 lpfc_sli4_driver_resource_unset(struct lpfc_hba *phba)
4543 {
4544         struct lpfc_fcf_conn_entry *conn_entry, *next_conn_entry;
4545
4546         /* Free memory allocated for msi-x interrupt vector entries */
4547         kfree(phba->sli4_hba.msix_entries);
4548
4549         /* Free memory allocated for fast-path work queue handles */
4550         kfree(phba->sli4_hba.fcp_eq_hdl);
4551
4552         /* Free the allocated rpi headers. */
4553         lpfc_sli4_remove_rpi_hdrs(phba);
4554         lpfc_sli4_remove_rpis(phba);
4555
4556         /* Free eligible FCF index bmask */
4557         kfree(phba->fcf.fcf_rr_bmask);
4558
4559         /* Free the ELS sgl list */
4560         lpfc_free_active_sgl(phba);
4561         lpfc_free_sgl_list(phba);
4562
4563         /* Free the SCSI sgl management array */
4564         kfree(phba->sli4_hba.lpfc_scsi_psb_array);
4565
4566         /* Free the SLI4 queues */
4567         lpfc_sli4_queue_destroy(phba);
4568
4569         /* Free the completion queue EQ event pool */
4570         lpfc_sli4_cq_event_release_all(phba);
4571         lpfc_sli4_cq_event_pool_destroy(phba);
4572
4573         /* Release resource identifiers. */
4574         lpfc_sli4_dealloc_resource_identifiers(phba);
4575
4576         /* Free the bsmbx region. */
4577         lpfc_destroy_bootstrap_mbox(phba);
4578
4579         /* Free the SLI Layer memory with SLI4 HBAs */
4580         lpfc_mem_free_all(phba);
4581
4582         /* Free the current connect table */
4583         list_for_each_entry_safe(conn_entry, next_conn_entry,
4584                 &phba->fcf_conn_rec_list, list) {
4585                 list_del_init(&conn_entry->list);
4586                 kfree(conn_entry);
4587         }
4588
4589         return;
4590 }
4591
4592 /**
4593  * lpfc_init_api_table_setup - Set up init api function jump table
4594  * @phba: The hba struct for which this call is being executed.
4595  * @dev_grp: The HBA PCI-Device group number.
4596  *
4597  * This routine sets up the device INIT interface API function jump table
4598  * in @phba struct.
4599  *
4600  * Returns: 0 - success, -ENODEV - failure.
4601  **/
4602 int
4603 lpfc_init_api_table_setup(struct lpfc_hba *phba, uint8_t dev_grp)
4604 {
4605         phba->lpfc_hba_init_link = lpfc_hba_init_link;
4606         phba->lpfc_hba_down_link = lpfc_hba_down_link;
4607         phba->lpfc_selective_reset = lpfc_selective_reset;
4608         switch (dev_grp) {
4609         case LPFC_PCI_DEV_LP:
4610                 phba->lpfc_hba_down_post = lpfc_hba_down_post_s3;
4611                 phba->lpfc_handle_eratt = lpfc_handle_eratt_s3;
4612                 phba->lpfc_stop_port = lpfc_stop_port_s3;
4613                 break;
4614         case LPFC_PCI_DEV_OC:
4615                 phba->lpfc_hba_down_post = lpfc_hba_down_post_s4;
4616                 phba->lpfc_handle_eratt = lpfc_handle_eratt_s4;
4617                 phba->lpfc_stop_port = lpfc_stop_port_s4;
4618                 break;
4619         default:
4620                 lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
4621                                 "1431 Invalid HBA PCI-device group: 0x%x\n",
4622                                 dev_grp);
4623                 return -ENODEV;
4624                 break;
4625         }
4626         return 0;
4627 }
4628
4629 /**
4630  * lpfc_setup_driver_resource_phase1 - Phase1 etup driver internal resources.
4631  * @phba: pointer to lpfc hba data structure.
4632  *
4633  * This routine is invoked to set up the driver internal resources before the
4634  * device specific resource setup to support the HBA device it attached to.
4635  *
4636  * Return codes
4637  *      0 - successful
4638  *      other values - error
4639  **/
4640 static int
4641 lpfc_setup_driver_resource_phase1(struct lpfc_hba *phba)
4642 {
4643         /*
4644          * Driver resources common to all SLI revisions
4645          */
4646         atomic_set(&phba->fast_event_count, 0);
4647         spin_lock_init(&phba->hbalock);
4648
4649         /* Initialize ndlp management spinlock */
4650         spin_lock_init(&phba->ndlp_lock);
4651
4652         INIT_LIST_HEAD(&phba->port_list);
4653         INIT_LIST_HEAD(&phba->work_list);
4654         init_waitqueue_head(&phba->wait_4_mlo_m_q);
4655
4656         /* Initialize the wait queue head for the kernel thread */
4657         init_waitqueue_head(&phba->work_waitq);
4658
4659         /* Initialize the scsi buffer list used by driver for scsi IO */
4660         spin_lock_init(&phba->scsi_buf_list_lock);
4661         INIT_LIST_HEAD(&phba->lpfc_scsi_buf_list);
4662
4663         /* Initialize the fabric iocb list */
4664         INIT_LIST_HEAD(&phba->fabric_iocb_list);
4665
4666         /* Initialize list to save ELS buffers */
4667         INIT_LIST_HEAD(&phba->elsbuf);
4668
4669         /* Initialize FCF connection rec list */
4670         INIT_LIST_HEAD(&phba->fcf_conn_rec_list);
4671
4672         return 0;
4673 }
4674
4675 /**
4676  * lpfc_setup_driver_resource_phase2 - Phase2 setup driver internal resources.
4677  * @phba: pointer to lpfc hba data structure.
4678  *
4679  * This routine is invoked to set up the driver internal resources after the
4680  * device specific resource setup to support the HBA device it attached to.
4681  *
4682  * Return codes
4683  *      0 - successful
4684  *      other values - error
4685  **/
4686 static int
4687 lpfc_setup_driver_resource_phase2(struct lpfc_hba *phba)
4688 {
4689         int error;
4690
4691         /* Startup the kernel thread for this host adapter. */
4692         phba->worker_thread = kthread_run(lpfc_do_work, phba,
4693                                           "lpfc_worker_%d", phba->brd_no);
4694         if (IS_ERR(phba->worker_thread)) {
4695                 error = PTR_ERR(phba->worker_thread);
4696                 return error;
4697         }
4698
4699         return 0;
4700 }
4701
4702 /**
4703  * lpfc_unset_driver_resource_phase2 - Phase2 unset driver internal resources.
4704  * @phba: pointer to lpfc hba data structure.
4705  *
4706  * This routine is invoked to unset the driver internal resources set up after
4707  * the device specific resource setup for supporting the HBA device it
4708  * attached to.
4709  **/
4710 static void
4711 lpfc_unset_driver_resource_phase2(struct lpfc_hba *phba)
4712 {
4713         /* Stop kernel worker thread */
4714         kthread_stop(phba->worker_thread);
4715 }
4716
4717 /**
4718  * lpfc_free_iocb_list - Free iocb list.
4719  * @phba: pointer to lpfc hba data structure.
4720  *
4721  * This routine is invoked to free the driver's IOCB list and memory.
4722  **/
4723 static void
4724 lpfc_free_iocb_list(struct lpfc_hba *phba)
4725 {
4726         struct lpfc_iocbq *iocbq_entry = NULL, *iocbq_next = NULL;
4727
4728         spin_lock_irq(&phba->hbalock);
4729         list_for_each_entry_safe(iocbq_entry, iocbq_next,
4730                                  &phba->lpfc_iocb_list, list) {
4731                 list_del(&iocbq_entry->list);
4732                 kfree(iocbq_entry);
4733                 phba->total_iocbq_bufs--;
4734         }
4735         spin_unlock_irq(&phba->hbalock);
4736
4737         return;
4738 }
4739
4740 /**
4741  * lpfc_init_iocb_list - Allocate and initialize iocb list.
4742  * @phba: pointer to lpfc hba data structure.
4743  *
4744  * This routine is invoked to allocate and initizlize the driver's IOCB
4745  * list and set up the IOCB tag array accordingly.
4746  *
4747  * Return codes
4748  *      0 - successful
4749  *      other values - error
4750  **/
4751 static int
4752 lpfc_init_iocb_list(struct lpfc_hba *phba, int iocb_count)
4753 {
4754         struct lpfc_iocbq *iocbq_entry = NULL;
4755         uint16_t iotag;
4756         int i;
4757
4758         /* Initialize and populate the iocb list per host.  */
4759         INIT_LIST_HEAD(&phba->lpfc_iocb_list);
4760         for (i = 0; i < iocb_count; i++) {
4761                 iocbq_entry = kzalloc(sizeof(struct lpfc_iocbq), GFP_KERNEL);
4762                 if (iocbq_entry == NULL) {
4763                         printk(KERN_ERR "%s: only allocated %d iocbs of "
4764                                 "expected %d count. Unloading driver.\n",
4765                                 __func__, i, LPFC_IOCB_LIST_CNT);
4766                         goto out_free_iocbq;
4767                 }
4768
4769                 iotag = lpfc_sli_next_iotag(phba, iocbq_entry);
4770                 if (iotag == 0) {
4771                         kfree(iocbq_entry);
4772                         printk(KERN_ERR "%s: failed to allocate IOTAG. "
4773                                 "Unloading driver.\n", __func__);
4774                         goto out_free_iocbq;
4775                 }
4776                 iocbq_entry->sli4_lxritag = NO_XRI;
4777                 iocbq_entry->sli4_xritag = NO_XRI;
4778
4779                 spin_lock_irq(&phba->hbalock);
4780                 list_add(&iocbq_entry->list, &phba->lpfc_iocb_list);
4781                 phba->total_iocbq_bufs++;
4782                 spin_unlock_irq(&phba->hbalock);
4783         }
4784
4785         return 0;
4786
4787 out_free_iocbq:
4788         lpfc_free_iocb_list(phba);
4789
4790         return -ENOMEM;
4791 }
4792
4793 /**
4794  * lpfc_free_sgl_list - Free sgl list.
4795  * @phba: pointer to lpfc hba data structure.
4796  *
4797  * This routine is invoked to free the driver's sgl list and memory.
4798  **/
4799 static void
4800 lpfc_free_sgl_list(struct lpfc_hba *phba)
4801 {
4802         struct lpfc_sglq *sglq_entry = NULL, *sglq_next = NULL;
4803         LIST_HEAD(sglq_list);
4804
4805         spin_lock_irq(&phba->hbalock);
4806         list_splice_init(&phba->sli4_hba.lpfc_sgl_list, &sglq_list);
4807         spin_unlock_irq(&phba->hbalock);
4808
4809         list_for_each_entry_safe(sglq_entry, sglq_next,
4810                                  &sglq_list, list) {
4811                 list_del(&sglq_entry->list);
4812                 lpfc_mbuf_free(phba, sglq_entry->virt, sglq_entry->phys);
4813                 kfree(sglq_entry);
4814                 phba->sli4_hba.total_sglq_bufs--;
4815         }
4816         kfree(phba->sli4_hba.lpfc_els_sgl_array);
4817 }
4818
4819 /**
4820  * lpfc_init_active_sgl_array - Allocate the buf to track active ELS XRIs.
4821  * @phba: pointer to lpfc hba data structure.
4822  *
4823  * This routine is invoked to allocate the driver's active sgl memory.
4824  * This array will hold the sglq_entry's for active IOs.
4825  **/
4826 static int
4827 lpfc_init_active_sgl_array(struct lpfc_hba *phba)
4828 {
4829         int size;
4830         size = sizeof(struct lpfc_sglq *);
4831         size *= phba->sli4_hba.max_cfg_param.max_xri;
4832
4833         phba->sli4_hba.lpfc_sglq_active_list =
4834                 kzalloc(size, GFP_KERNEL);
4835         if (!phba->sli4_hba.lpfc_sglq_active_list)
4836                 return -ENOMEM;
4837         return 0;
4838 }
4839
4840 /**
4841  * lpfc_free_active_sgl - Free the buf that tracks active ELS XRIs.
4842  * @phba: pointer to lpfc hba data structure.
4843  *
4844  * This routine is invoked to walk through the array of active sglq entries
4845  * and free all of the resources.
4846  * This is just a place holder for now.
4847  **/
4848 static void
4849 lpfc_free_active_sgl(struct lpfc_hba *phba)
4850 {
4851         kfree(phba->sli4_hba.lpfc_sglq_active_list);
4852 }
4853
4854 /**
4855  * lpfc_init_sgl_list - Allocate and initialize sgl list.
4856  * @phba: pointer to lpfc hba data structure.
4857  *
4858  * This routine is invoked to allocate and initizlize the driver's sgl
4859  * list and set up the sgl xritag tag array accordingly.
4860  *
4861  * Return codes
4862  *      0 - successful
4863  *      other values - error
4864  **/
4865 static int
4866 lpfc_init_sgl_list(struct lpfc_hba *phba)
4867 {
4868         struct lpfc_sglq *sglq_entry = NULL;
4869         int i;
4870         int els_xri_cnt;
4871
4872         els_xri_cnt = lpfc_sli4_get_els_iocb_cnt(phba);
4873         lpfc_printf_log(phba, KERN_INFO, LOG_SLI,
4874                                 "2400 ELS XRI count %d.\n",
4875                                 els_xri_cnt);
4876         /* Initialize and populate the sglq list per host/VF. */
4877         INIT_LIST_HEAD(&phba->sli4_hba.lpfc_sgl_list);
4878         INIT_LIST_HEAD(&phba->sli4_hba.lpfc_abts_els_sgl_list);
4879
4880         /* Sanity check on XRI management */
4881         if (phba->sli4_hba.max_cfg_param.max_xri <= els_xri_cnt) {
4882                 lpfc_printf_log(phba, KERN_ERR, LOG_SLI,
4883                                 "2562 No room left for SCSI XRI allocation: "
4884                                 "max_xri=%d, els_xri=%d\n",
4885                                 phba->sli4_hba.max_cfg_param.max_xri,
4886                                 els_xri_cnt);
4887                 return -ENOMEM;
4888         }
4889
4890         /* Allocate memory for the ELS XRI management array */
4891         phba->sli4_hba.lpfc_els_sgl_array =
4892                         kzalloc((sizeof(struct lpfc_sglq *) * els_xri_cnt),
4893                         GFP_KERNEL);
4894
4895         if (!phba->sli4_hba.lpfc_els_sgl_array) {
4896                 lpfc_printf_log(phba, KERN_ERR, LOG_SLI,
4897                                 "2401 Failed to allocate memory for ELS "
4898                                 "XRI management array of size %d.\n",
4899                                 els_xri_cnt);
4900                 return -ENOMEM;
4901         }
4902
4903         /* Keep the SCSI XRI into the XRI management array */
4904         phba->sli4_hba.scsi_xri_max =
4905                         phba->sli4_hba.max_cfg_param.max_xri - els_xri_cnt;
4906         phba->sli4_hba.scsi_xri_cnt = 0;
4907         phba->sli4_hba.lpfc_scsi_psb_array =
4908                         kzalloc((sizeof(struct lpfc_scsi_buf *) *
4909                         phba->sli4_hba.scsi_xri_max), GFP_KERNEL);
4910
4911         if (!phba->sli4_hba.lpfc_scsi_psb_array) {
4912                 lpfc_printf_log(phba, KERN_ERR, LOG_SLI,
4913                                 "2563 Failed to allocate memory for SCSI "
4914                                 "XRI management array of size %d.\n",
4915                                 phba->sli4_hba.scsi_xri_max);
4916                 kfree(phba->sli4_hba.lpfc_els_sgl_array);
4917                 return -ENOMEM;
4918         }
4919
4920         for (i = 0; i < els_xri_cnt; i++) {
4921                 sglq_entry = kzalloc(sizeof(struct lpfc_sglq), GFP_KERNEL);
4922                 if (sglq_entry == NULL) {
4923                         printk(KERN_ERR "%s: only allocated %d sgls of "
4924                                 "expected %d count. Unloading driver.\n",
4925                                 __func__, i, els_xri_cnt);
4926                         goto out_free_mem;
4927                 }
4928
4929                 sglq_entry->buff_type = GEN_BUFF_TYPE;
4930                 sglq_entry->virt = lpfc_mbuf_alloc(phba, 0, &sglq_entry->phys);
4931                 if (sglq_entry->virt == NULL) {
4932                         kfree(sglq_entry);
4933                         printk(KERN_ERR "%s: failed to allocate mbuf.\n"
4934                                 "Unloading driver.\n", __func__);
4935                         goto out_free_mem;
4936                 }
4937                 sglq_entry->sgl = sglq_entry->virt;
4938                 memset(sglq_entry->sgl, 0, LPFC_BPL_SIZE);
4939
4940                 /* The list order is used by later block SGL registraton */
4941                 spin_lock_irq(&phba->hbalock);
4942                 sglq_entry->state = SGL_FREED;
4943                 list_add_tail(&sglq_entry->list, &phba->sli4_hba.lpfc_sgl_list);
4944                 phba->sli4_hba.lpfc_els_sgl_array[i] = sglq_entry;
4945                 phba->sli4_hba.total_sglq_bufs++;
4946                 spin_unlock_irq(&phba->hbalock);
4947         }
4948         return 0;
4949
4950 out_free_mem:
4951         kfree(phba->sli4_hba.lpfc_scsi_psb_array);
4952         lpfc_free_sgl_list(phba);
4953         return -ENOMEM;
4954 }
4955
4956 /**
4957  * lpfc_sli4_init_rpi_hdrs - Post the rpi header memory region to the port
4958  * @phba: pointer to lpfc hba data structure.
4959  *
4960  * This routine is invoked to post rpi header templates to the
4961  * HBA consistent with the SLI-4 interface spec.  This routine
4962  * posts a PAGE_SIZE memory region to the port to hold up to
4963  * PAGE_SIZE modulo 64 rpi context headers.
4964  * No locks are held here because this is an initialization routine
4965  * called only from probe or lpfc_online when interrupts are not
4966  * enabled and the driver is reinitializing the device.
4967  *
4968  * Return codes
4969  *      0 - successful
4970  *      -ENOMEM - No available memory
4971  *      -EIO - The mailbox failed to complete successfully.
4972  **/
4973 int
4974 lpfc_sli4_init_rpi_hdrs(struct lpfc_hba *phba)
4975 {
4976         int rc = 0;
4977         struct lpfc_rpi_hdr *rpi_hdr;
4978
4979         INIT_LIST_HEAD(&phba->sli4_hba.lpfc_rpi_hdr_list);
4980         /*
4981          * If the SLI4 port supports extents, posting the rpi header isn't
4982          * required.  Set the expected maximum count and let the actual value
4983          * get set when extents are fully allocated.
4984          */
4985         if (!phba->sli4_hba.rpi_hdrs_in_use) {
4986                 phba->sli4_hba.next_rpi = phba->sli4_hba.max_cfg_param.max_rpi;
4987                 return rc;
4988         }
4989         if (phba->sli4_hba.extents_in_use)
4990                 return -EIO;
4991
4992         rpi_hdr = lpfc_sli4_create_rpi_hdr(phba);
4993         if (!rpi_hdr) {
4994                 lpfc_printf_log(phba, KERN_ERR, LOG_MBOX | LOG_SLI,
4995                                 "0391 Error during rpi post operation\n");
4996                 lpfc_sli4_remove_rpis(phba);
4997                 rc = -ENODEV;
4998         }
4999
5000         return rc;
5001 }
5002
5003 /**
5004  * lpfc_sli4_create_rpi_hdr - Allocate an rpi header memory region
5005  * @phba: pointer to lpfc hba data structure.
5006  *
5007  * This routine is invoked to allocate a single 4KB memory region to
5008  * support rpis and stores them in the phba.  This single region
5009  * provides support for up to 64 rpis.  The region is used globally
5010  * by the device.
5011  *
5012  * Returns:
5013  *   A valid rpi hdr on success.
5014  *   A NULL pointer on any failure.
5015  **/
5016 struct lpfc_rpi_hdr *
5017 lpfc_sli4_create_rpi_hdr(struct lpfc_hba *phba)
5018 {
5019         uint16_t rpi_limit, curr_rpi_range;
5020         struct lpfc_dmabuf *dmabuf;
5021         struct lpfc_rpi_hdr *rpi_hdr;
5022         uint32_t rpi_count;
5023
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                 return NULL;
5031         if (phba->sli4_hba.extents_in_use)
5032                 return NULL;
5033
5034         /* The limit on the logical index is just the max_rpi count. */
5035         rpi_limit = phba->sli4_hba.max_cfg_param.rpi_base +
5036         phba->sli4_hba.max_cfg_param.max_rpi - 1;
5037
5038         spin_lock_irq(&phba->hbalock);
5039         /*
5040          * Establish the starting RPI in this header block.  The starting
5041          * rpi is normalized to a zero base because the physical rpi is
5042          * port based.
5043          */
5044         curr_rpi_range = phba->sli4_hba.next_rpi -
5045                 phba->sli4_hba.max_cfg_param.rpi_base;
5046         spin_unlock_irq(&phba->hbalock);
5047
5048         /*
5049          * The port has a limited number of rpis. The increment here
5050          * is LPFC_RPI_HDR_COUNT - 1 to account for the starting value
5051          * and to allow the full max_rpi range per port.
5052          */
5053         if ((curr_rpi_range + (LPFC_RPI_HDR_COUNT - 1)) > rpi_limit)
5054                 rpi_count = rpi_limit - curr_rpi_range;
5055         else
5056                 rpi_count = LPFC_RPI_HDR_COUNT;
5057
5058         if (!rpi_count)
5059                 return NULL;
5060         /*
5061          * First allocate the protocol header region for the port.  The
5062          * port expects a 4KB DMA-mapped memory region that is 4K aligned.
5063          */
5064         dmabuf = kzalloc(sizeof(struct lpfc_dmabuf), GFP_KERNEL);
5065         if (!dmabuf)
5066                 return NULL;
5067
5068         dmabuf->virt = dma_alloc_coherent(&phba->pcidev->dev,
5069                                           LPFC_HDR_TEMPLATE_SIZE,
5070                                           &dmabuf->phys,
5071                                           GFP_KERNEL);
5072         if (!dmabuf->virt) {
5073                 rpi_hdr = NULL;
5074                 goto err_free_dmabuf;
5075         }
5076
5077         memset(dmabuf->virt, 0, LPFC_HDR_TEMPLATE_SIZE);
5078         if (!IS_ALIGNED(dmabuf->phys, LPFC_HDR_TEMPLATE_SIZE)) {
5079                 rpi_hdr = NULL;
5080                 goto err_free_coherent;
5081         }
5082
5083         /* Save the rpi header data for cleanup later. */
5084         rpi_hdr = kzalloc(sizeof(struct lpfc_rpi_hdr), GFP_KERNEL);
5085         if (!rpi_hdr)
5086                 goto err_free_coherent;
5087
5088         rpi_hdr->dmabuf = dmabuf;
5089         rpi_hdr->len = LPFC_HDR_TEMPLATE_SIZE;
5090         rpi_hdr->page_count = 1;
5091         spin_lock_irq(&phba->hbalock);
5092
5093         /* The rpi_hdr stores the logical index only. */
5094         rpi_hdr->start_rpi = curr_rpi_range;
5095         list_add_tail(&rpi_hdr->list, &phba->sli4_hba.lpfc_rpi_hdr_list);
5096
5097         /*
5098          * The next_rpi stores the next logical module-64 rpi value used
5099          * to post physical rpis in subsequent rpi postings.
5100          */
5101         phba->sli4_hba.next_rpi += rpi_count;
5102         spin_unlock_irq(&phba->hbalock);
5103         return rpi_hdr;
5104
5105  err_free_coherent:
5106         dma_free_coherent(&phba->pcidev->dev, LPFC_HDR_TEMPLATE_SIZE,
5107                           dmabuf->virt, dmabuf->phys);
5108  err_free_dmabuf:
5109         kfree(dmabuf);
5110         return NULL;
5111 }
5112
5113 /**
5114  * lpfc_sli4_remove_rpi_hdrs - Remove all rpi header memory regions
5115  * @phba: pointer to lpfc hba data structure.
5116  *
5117  * This routine is invoked to remove all memory resources allocated
5118  * to support rpis for SLI4 ports not supporting extents. This routine
5119  * presumes the caller has released all rpis consumed by fabric or port
5120  * logins and is prepared to have the header pages removed.
5121  **/
5122 void
5123 lpfc_sli4_remove_rpi_hdrs(struct lpfc_hba *phba)
5124 {
5125         struct lpfc_rpi_hdr *rpi_hdr, *next_rpi_hdr;
5126
5127         if (!phba->sli4_hba.rpi_hdrs_in_use)
5128                 goto exit;
5129
5130         list_for_each_entry_safe(rpi_hdr, next_rpi_hdr,
5131                                  &phba->sli4_hba.lpfc_rpi_hdr_list, list) {
5132                 list_del(&rpi_hdr->list);
5133                 dma_free_coherent(&phba->pcidev->dev, rpi_hdr->len,
5134                                   rpi_hdr->dmabuf->virt, rpi_hdr->dmabuf->phys);
5135                 kfree(rpi_hdr->dmabuf);
5136                 kfree(rpi_hdr);
5137         }
5138  exit:
5139         /* There are no rpis available to the port now. */
5140         phba->sli4_hba.next_rpi = 0;
5141 }
5142
5143 /**
5144  * lpfc_hba_alloc - Allocate driver hba data structure for a device.
5145  * @pdev: pointer to pci device data structure.
5146  *
5147  * This routine is invoked to allocate the driver hba data structure for an
5148  * HBA device. If the allocation is successful, the phba reference to the
5149  * PCI device data structure is set.
5150  *
5151  * Return codes
5152  *      pointer to @phba - successful
5153  *      NULL - error
5154  **/
5155 static struct lpfc_hba *
5156 lpfc_hba_alloc(struct pci_dev *pdev)
5157 {
5158         struct lpfc_hba *phba;
5159
5160         /* Allocate memory for HBA structure */
5161         phba = kzalloc(sizeof(struct lpfc_hba), GFP_KERNEL);
5162         if (!phba) {
5163                 dev_err(&pdev->dev, "failed to allocate hba struct\n");
5164                 return NULL;
5165         }
5166
5167         /* Set reference to PCI device in HBA structure */
5168         phba->pcidev = pdev;
5169
5170         /* Assign an unused board number */
5171         phba->brd_no = lpfc_get_instance();
5172         if (phba->brd_no < 0) {
5173                 kfree(phba);
5174                 return NULL;
5175         }
5176
5177         spin_lock_init(&phba->ct_ev_lock);
5178         INIT_LIST_HEAD(&phba->ct_ev_waiters);
5179
5180         return phba;
5181 }
5182
5183 /**
5184  * lpfc_hba_free - Free driver hba data structure with a device.
5185  * @phba: pointer to lpfc hba data structure.
5186  *
5187  * This routine is invoked to free the driver hba data structure with an
5188  * HBA device.
5189  **/
5190 static void
5191 lpfc_hba_free(struct lpfc_hba *phba)
5192 {
5193         /* Release the driver assigned board number */
5194         idr_remove(&lpfc_hba_index, phba->brd_no);
5195
5196         kfree(phba);
5197         return;
5198 }
5199
5200 /**
5201  * lpfc_create_shost - Create hba physical port with associated scsi host.
5202  * @phba: pointer to lpfc hba data structure.
5203  *
5204  * This routine is invoked to create HBA physical port and associate a SCSI
5205  * host with it.
5206  *
5207  * Return codes
5208  *      0 - successful
5209  *      other values - error
5210  **/
5211 static int
5212 lpfc_create_shost(struct lpfc_hba *phba)
5213 {
5214         struct lpfc_vport *vport;
5215         struct Scsi_Host  *shost;
5216
5217         /* Initialize HBA FC structure */
5218         phba->fc_edtov = FF_DEF_EDTOV;
5219         phba->fc_ratov = FF_DEF_RATOV;
5220         phba->fc_altov = FF_DEF_ALTOV;
5221         phba->fc_arbtov = FF_DEF_ARBTOV;
5222
5223         atomic_set(&phba->sdev_cnt, 0);
5224         vport = lpfc_create_port(phba, phba->brd_no, &phba->pcidev->dev);
5225         if (!vport)
5226                 return -ENODEV;
5227
5228         shost = lpfc_shost_from_vport(vport);
5229         phba->pport = vport;
5230         lpfc_debugfs_initialize(vport);
5231         /* Put reference to SCSI host to driver's device private data */
5232         pci_set_drvdata(phba->pcidev, shost);
5233
5234         return 0;
5235 }
5236
5237 /**
5238  * lpfc_destroy_shost - Destroy hba physical port with associated scsi host.
5239  * @phba: pointer to lpfc hba data structure.
5240  *
5241  * This routine is invoked to destroy HBA physical port and the associated
5242  * SCSI host.
5243  **/
5244 static void
5245 lpfc_destroy_shost(struct lpfc_hba *phba)
5246 {
5247         struct lpfc_vport *vport = phba->pport;
5248
5249         /* Destroy physical port that associated with the SCSI host */
5250         destroy_port(vport);
5251
5252         return;
5253 }
5254
5255 /**
5256  * lpfc_setup_bg - Setup Block guard structures and debug areas.
5257  * @phba: pointer to lpfc hba data structure.
5258  * @shost: the shost to be used to detect Block guard settings.
5259  *
5260  * This routine sets up the local Block guard protocol settings for @shost.
5261  * This routine also allocates memory for debugging bg buffers.
5262  **/
5263 static void
5264 lpfc_setup_bg(struct lpfc_hba *phba, struct Scsi_Host *shost)
5265 {
5266         int pagecnt = 10;
5267         if (lpfc_prot_mask && lpfc_prot_guard) {
5268                 lpfc_printf_log(phba, KERN_INFO, LOG_INIT,
5269                                 "1478 Registering BlockGuard with the "
5270                                 "SCSI layer\n");
5271                 scsi_host_set_prot(shost, lpfc_prot_mask);
5272                 scsi_host_set_guard(shost, lpfc_prot_guard);
5273         }
5274         if (!_dump_buf_data) {
5275                 while (pagecnt) {
5276                         spin_lock_init(&_dump_buf_lock);
5277                         _dump_buf_data =
5278                                 (char *) __get_free_pages(GFP_KERNEL, pagecnt);
5279                         if (_dump_buf_data) {
5280                                 lpfc_printf_log(phba, KERN_ERR, LOG_BG,
5281                                         "9043 BLKGRD: allocated %d pages for "
5282                                        "_dump_buf_data at 0x%p\n",
5283                                        (1 << pagecnt), _dump_buf_data);
5284                                 _dump_buf_data_order = pagecnt;
5285                                 memset(_dump_buf_data, 0,
5286                                        ((1 << PAGE_SHIFT) << pagecnt));
5287                                 break;
5288                         } else
5289                                 --pagecnt;
5290                 }
5291                 if (!_dump_buf_data_order)
5292                         lpfc_printf_log(phba, KERN_ERR, LOG_BG,
5293                                 "9044 BLKGRD: ERROR unable to allocate "
5294                                "memory for hexdump\n");
5295         } else
5296                 lpfc_printf_log(phba, KERN_ERR, LOG_BG,
5297                         "9045 BLKGRD: already allocated _dump_buf_data=0x%p"
5298                        "\n", _dump_buf_data);
5299         if (!_dump_buf_dif) {
5300                 while (pagecnt) {
5301                         _dump_buf_dif =
5302                                 (char *) __get_free_pages(GFP_KERNEL, pagecnt);
5303                         if (_dump_buf_dif) {
5304                                 lpfc_printf_log(phba, KERN_ERR, LOG_BG,
5305                                         "9046 BLKGRD: allocated %d pages for "
5306                                        "_dump_buf_dif at 0x%p\n",
5307                                        (1 << pagecnt), _dump_buf_dif);
5308                                 _dump_buf_dif_order = pagecnt;
5309                                 memset(_dump_buf_dif, 0,
5310                                        ((1 << PAGE_SHIFT) << pagecnt));
5311                                 break;
5312                         } else
5313                                 --pagecnt;
5314                 }
5315                 if (!_dump_buf_dif_order)
5316                         lpfc_printf_log(phba, KERN_ERR, LOG_BG,
5317                         "9047 BLKGRD: ERROR unable to allocate "
5318                                "memory for hexdump\n");
5319         } else
5320                 lpfc_printf_log(phba, KERN_ERR, LOG_BG,
5321                         "9048 BLKGRD: already allocated _dump_buf_dif=0x%p\n",
5322                        _dump_buf_dif);
5323 }
5324
5325 /**
5326  * lpfc_post_init_setup - Perform necessary device post initialization setup.
5327  * @phba: pointer to lpfc hba data structure.
5328  *
5329  * This routine is invoked to perform all the necessary post initialization
5330  * setup for the device.
5331  **/
5332 static void
5333 lpfc_post_init_setup(struct lpfc_hba *phba)
5334 {
5335         struct Scsi_Host  *shost;
5336         struct lpfc_adapter_event_header adapter_event;
5337
5338         /* Get the default values for Model Name and Description */
5339         lpfc_get_hba_model_desc(phba, phba->ModelName, phba->ModelDesc);
5340
5341         /*
5342          * hba setup may have changed the hba_queue_depth so we need to
5343          * adjust the value of can_queue.
5344          */
5345         shost = pci_get_drvdata(phba->pcidev);
5346         shost->can_queue = phba->cfg_hba_queue_depth - 10;
5347         if (phba->sli3_options & LPFC_SLI3_BG_ENABLED)
5348                 lpfc_setup_bg(phba, shost);
5349
5350         lpfc_host_attrib_init(shost);
5351
5352         if (phba->cfg_poll & DISABLE_FCP_RING_INT) {
5353                 spin_lock_irq(shost->host_lock);
5354                 lpfc_poll_start_timer(phba);
5355                 spin_unlock_irq(shost->host_lock);
5356         }
5357
5358         lpfc_printf_log(phba, KERN_INFO, LOG_INIT,
5359                         "0428 Perform SCSI scan\n");
5360         /* Send board arrival event to upper layer */
5361         adapter_event.event_type = FC_REG_ADAPTER_EVENT;
5362         adapter_event.subcategory = LPFC_EVENT_ARRIVAL;
5363         fc_host_post_vendor_event(shost, fc_get_event_number(),
5364                                   sizeof(adapter_event),
5365                                   (char *) &adapter_event,
5366                                   LPFC_NL_VENDOR_ID);
5367         return;
5368 }
5369
5370 /**
5371  * lpfc_sli_pci_mem_setup - Setup SLI3 HBA PCI memory space.
5372  * @phba: pointer to lpfc hba data structure.
5373  *
5374  * This routine is invoked to set up the PCI device memory space for device
5375  * with SLI-3 interface spec.
5376  *
5377  * Return codes
5378  *      0 - successful
5379  *      other values - error
5380  **/
5381 static int
5382 lpfc_sli_pci_mem_setup(struct lpfc_hba *phba)
5383 {
5384         struct pci_dev *pdev;
5385         unsigned long bar0map_len, bar2map_len;
5386         int i, hbq_count;
5387         void *ptr;
5388         int error = -ENODEV;
5389
5390         /* Obtain PCI device reference */
5391         if (!phba->pcidev)
5392                 return error;
5393         else
5394                 pdev = phba->pcidev;
5395
5396         /* Set the device DMA mask size */
5397         if (pci_set_dma_mask(pdev, DMA_BIT_MASK(64)) != 0
5398          || pci_set_consistent_dma_mask(pdev,DMA_BIT_MASK(64)) != 0) {
5399                 if (pci_set_dma_mask(pdev, DMA_BIT_MASK(32)) != 0
5400                  || pci_set_consistent_dma_mask(pdev,DMA_BIT_MASK(32)) != 0) {
5401                         return error;
5402                 }
5403         }
5404
5405         /* Get the bus address of Bar0 and Bar2 and the number of bytes
5406          * required by each mapping.
5407          */
5408         phba->pci_bar0_map = pci_resource_start(pdev, 0);
5409         bar0map_len = pci_resource_len(pdev, 0);
5410
5411         phba->pci_bar2_map = pci_resource_start(pdev, 2);
5412         bar2map_len = pci_resource_len(pdev, 2);
5413
5414         /* Map HBA SLIM to a kernel virtual address. */
5415         phba->slim_memmap_p = ioremap(phba->pci_bar0_map, bar0map_len);
5416         if (!phba->slim_memmap_p) {
5417                 dev_printk(KERN_ERR, &pdev->dev,
5418                            "ioremap failed for SLIM memory.\n");
5419                 goto out;
5420         }
5421
5422         /* Map HBA Control Registers to a kernel virtual address. */
5423         phba->ctrl_regs_memmap_p = ioremap(phba->pci_bar2_map, bar2map_len);
5424         if (!phba->ctrl_regs_memmap_p) {
5425                 dev_printk(KERN_ERR, &pdev->dev,
5426                            "ioremap failed for HBA control registers.\n");
5427                 goto out_iounmap_slim;
5428         }
5429
5430         /* Allocate memory for SLI-2 structures */
5431         phba->slim2p.virt = dma_alloc_coherent(&pdev->dev,
5432                                                SLI2_SLIM_SIZE,
5433                                                &phba->slim2p.phys,
5434                                                GFP_KERNEL);
5435         if (!phba->slim2p.virt)
5436                 goto out_iounmap;
5437
5438         memset(phba->slim2p.virt, 0, SLI2_SLIM_SIZE);
5439         phba->mbox = phba->slim2p.virt + offsetof(struct lpfc_sli2_slim, mbx);
5440         phba->mbox_ext = (phba->slim2p.virt +
5441                 offsetof(struct lpfc_sli2_slim, mbx_ext_words));
5442         phba->pcb = (phba->slim2p.virt + offsetof(struct lpfc_sli2_slim, pcb));
5443         phba->IOCBs = (phba->slim2p.virt +
5444                        offsetof(struct lpfc_sli2_slim, IOCBs));
5445
5446         phba->hbqslimp.virt = dma_alloc_coherent(&pdev->dev,
5447                                                  lpfc_sli_hbq_size(),
5448                                                  &phba->hbqslimp.phys,
5449                                                  GFP_KERNEL);
5450         if (!phba->hbqslimp.virt)
5451                 goto out_free_slim;
5452
5453         hbq_count = lpfc_sli_hbq_count();
5454         ptr = phba->hbqslimp.virt;
5455         for (i = 0; i < hbq_count; ++i) {
5456                 phba->hbqs[i].hbq_virt = ptr;
5457                 INIT_LIST_HEAD(&phba->hbqs[i].hbq_buffer_list);
5458                 ptr += (lpfc_hbq_defs[i]->entry_count *
5459                         sizeof(struct lpfc_hbq_entry));
5460         }
5461         phba->hbqs[LPFC_ELS_HBQ].hbq_alloc_buffer = lpfc_els_hbq_alloc;
5462         phba->hbqs[LPFC_ELS_HBQ].hbq_free_buffer = lpfc_els_hbq_free;
5463
5464         memset(phba->hbqslimp.virt, 0, lpfc_sli_hbq_size());
5465
5466         INIT_LIST_HEAD(&phba->rb_pend_list);
5467
5468         phba->MBslimaddr = phba->slim_memmap_p;
5469         phba->HAregaddr = phba->ctrl_regs_memmap_p + HA_REG_OFFSET;
5470         phba->CAregaddr = phba->ctrl_regs_memmap_p + CA_REG_OFFSET;
5471         phba->HSregaddr = phba->ctrl_regs_memmap_p + HS_REG_OFFSET;
5472         phba->HCregaddr = phba->ctrl_regs_memmap_p + HC_REG_OFFSET;
5473
5474         return 0;
5475
5476 out_free_slim:
5477         dma_free_coherent(&pdev->dev, SLI2_SLIM_SIZE,
5478                           phba->slim2p.virt, phba->slim2p.phys);
5479 out_iounmap:
5480         iounmap(phba->ctrl_regs_memmap_p);
5481 out_iounmap_slim:
5482         iounmap(phba->slim_memmap_p);
5483 out:
5484         return error;
5485 }
5486
5487 /**
5488  * lpfc_sli_pci_mem_unset - Unset SLI3 HBA PCI memory space.
5489  * @phba: pointer to lpfc hba data structure.
5490  *
5491  * This routine is invoked to unset the PCI device memory space for device
5492  * with SLI-3 interface spec.
5493  **/
5494 static void
5495 lpfc_sli_pci_mem_unset(struct lpfc_hba *phba)
5496 {
5497         struct pci_dev *pdev;
5498
5499         /* Obtain PCI device reference */
5500         if (!phba->pcidev)
5501                 return;
5502         else
5503                 pdev = phba->pcidev;
5504
5505         /* Free coherent DMA memory allocated */
5506         dma_free_coherent(&pdev->dev, lpfc_sli_hbq_size(),
5507                           phba->hbqslimp.virt, phba->hbqslimp.phys);
5508         dma_free_coherent(&pdev->dev, SLI2_SLIM_SIZE,
5509                           phba->slim2p.virt, phba->slim2p.phys);
5510
5511         /* I/O memory unmap */
5512         iounmap(phba->ctrl_regs_memmap_p);
5513         iounmap(phba->slim_memmap_p);
5514
5515         return;
5516 }
5517
5518 /**
5519  * lpfc_sli4_post_status_check - Wait for SLI4 POST done and check status
5520  * @phba: pointer to lpfc hba data structure.
5521  *
5522  * This routine is invoked to wait for SLI4 device Power On Self Test (POST)
5523  * done and check status.
5524  *
5525  * Return 0 if successful, otherwise -ENODEV.
5526  **/
5527 int
5528 lpfc_sli4_post_status_check(struct lpfc_hba *phba)
5529 {
5530         struct lpfc_register portsmphr_reg, uerrlo_reg, uerrhi_reg;
5531         struct lpfc_register reg_data;
5532         int i, port_error = 0;
5533         uint32_t if_type;
5534
5535         memset(&portsmphr_reg, 0, sizeof(portsmphr_reg));
5536         memset(&reg_data, 0, sizeof(reg_data));
5537         if (!phba->sli4_hba.PSMPHRregaddr)
5538                 return -ENODEV;
5539
5540         /* Wait up to 30 seconds for the SLI Port POST done and ready */
5541         for (i = 0; i < 3000; i++) {
5542                 if (lpfc_readl(phba->sli4_hba.PSMPHRregaddr,
5543                         &portsmphr_reg.word0) ||
5544                         (bf_get(lpfc_port_smphr_perr, &portsmphr_reg))) {
5545                         /* Port has a fatal POST error, break out */
5546                         port_error = -ENODEV;
5547                         break;
5548                 }
5549                 if (LPFC_POST_STAGE_PORT_READY ==
5550                     bf_get(lpfc_port_smphr_port_status, &portsmphr_reg))
5551                         break;
5552                 msleep(10);
5553         }
5554
5555         /*
5556          * If there was a port error during POST, then don't proceed with
5557          * other register reads as the data may not be valid.  Just exit.
5558          */
5559         if (port_error) {
5560                 lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
5561                         "1408 Port Failed POST - portsmphr=0x%x, "
5562                         "perr=x%x, sfi=x%x, nip=x%x, ipc=x%x, scr1=x%x, "
5563                         "scr2=x%x, hscratch=x%x, pstatus=x%x\n",
5564                         portsmphr_reg.word0,
5565                         bf_get(lpfc_port_smphr_perr, &portsmphr_reg),
5566                         bf_get(lpfc_port_smphr_sfi, &portsmphr_reg),
5567                         bf_get(lpfc_port_smphr_nip, &portsmphr_reg),
5568                         bf_get(lpfc_port_smphr_ipc, &portsmphr_reg),
5569                         bf_get(lpfc_port_smphr_scr1, &portsmphr_reg),
5570                         bf_get(lpfc_port_smphr_scr2, &portsmphr_reg),
5571                         bf_get(lpfc_port_smphr_host_scratch, &portsmphr_reg),
5572                         bf_get(lpfc_port_smphr_port_status, &portsmphr_reg));
5573         } else {
5574                 lpfc_printf_log(phba, KERN_INFO, LOG_INIT,
5575                                 "2534 Device Info: SLIFamily=0x%x, "
5576                                 "SLIRev=0x%x, IFType=0x%x, SLIHint_1=0x%x, "
5577                                 "SLIHint_2=0x%x, FT=0x%x\n",
5578                                 bf_get(lpfc_sli_intf_sli_family,
5579                                        &phba->sli4_hba.sli_intf),
5580                                 bf_get(lpfc_sli_intf_slirev,
5581                                        &phba->sli4_hba.sli_intf),
5582                                 bf_get(lpfc_sli_intf_if_type,
5583                                        &phba->sli4_hba.sli_intf),
5584                                 bf_get(lpfc_sli_intf_sli_hint1,
5585                                        &phba->sli4_hba.sli_intf),
5586                                 bf_get(lpfc_sli_intf_sli_hint2,
5587                                        &phba->sli4_hba.sli_intf),
5588                                 bf_get(lpfc_sli_intf_func_type,
5589                                        &phba->sli4_hba.sli_intf));
5590                 /*
5591                  * Check for other Port errors during the initialization
5592                  * process.  Fail the load if the port did not come up
5593                  * correctly.
5594                  */
5595                 if_type = bf_get(lpfc_sli_intf_if_type,
5596                                  &phba->sli4_hba.sli_intf);
5597                 switch (if_type) {
5598                 case LPFC_SLI_INTF_IF_TYPE_0:
5599                         phba->sli4_hba.ue_mask_lo =
5600                               readl(phba->sli4_hba.u.if_type0.UEMASKLOregaddr);
5601                         phba->sli4_hba.ue_mask_hi =
5602                               readl(phba->sli4_hba.u.if_type0.UEMASKHIregaddr);
5603                         uerrlo_reg.word0 =
5604                               readl(phba->sli4_hba.u.if_type0.UERRLOregaddr);
5605                         uerrhi_reg.word0 =
5606                                 readl(phba->sli4_hba.u.if_type0.UERRHIregaddr);
5607                         if ((~phba->sli4_hba.ue_mask_lo & uerrlo_reg.word0) ||
5608                             (~phba->sli4_hba.ue_mask_hi & uerrhi_reg.word0)) {
5609                                 lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
5610                                                 "1422 Unrecoverable Error "
5611                                                 "Detected during POST "
5612                                                 "uerr_lo_reg=0x%x, "
5613                                                 "uerr_hi_reg=0x%x, "
5614                                                 "ue_mask_lo_reg=0x%x, "
5615                                                 "ue_mask_hi_reg=0x%x\n",
5616                                                 uerrlo_reg.word0,
5617                                                 uerrhi_reg.word0,
5618                                                 phba->sli4_hba.ue_mask_lo,
5619                                                 phba->sli4_hba.ue_mask_hi);
5620                                 port_error = -ENODEV;
5621                         }
5622                         break;
5623                 case LPFC_SLI_INTF_IF_TYPE_2:
5624                         /* Final checks.  The port status should be clean. */
5625                         if (lpfc_readl(phba->sli4_hba.u.if_type2.STATUSregaddr,
5626                                 &reg_data.word0) ||
5627                                 (bf_get(lpfc_sliport_status_err, &reg_data) &&
5628                                  !bf_get(lpfc_sliport_status_rn, &reg_data))) {
5629                                 phba->work_status[0] =
5630                                         readl(phba->sli4_hba.u.if_type2.
5631                                               ERR1regaddr);
5632                                 phba->work_status[1] =
5633                                         readl(phba->sli4_hba.u.if_type2.
5634                                               ERR2regaddr);
5635                                 lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
5636                                         "2888 Port Error Detected "
5637                                         "during POST: "
5638                                         "port status reg 0x%x, "
5639                                         "port_smphr reg 0x%x, "
5640                                         "error 1=0x%x, error 2=0x%x\n",
5641                                         reg_data.word0,
5642                                         portsmphr_reg.word0,
5643                                         phba->work_status[0],
5644                                         phba->work_status[1]);
5645                                 port_error = -ENODEV;
5646                         }
5647                         break;
5648                 case LPFC_SLI_INTF_IF_TYPE_1:
5649                 default:
5650                         break;
5651                 }
5652         }
5653         return port_error;
5654 }
5655
5656 /**
5657  * lpfc_sli4_bar0_register_memmap - Set up SLI4 BAR0 register memory map.
5658  * @phba: pointer to lpfc hba data structure.
5659  * @if_type:  The SLI4 interface type getting configured.
5660  *
5661  * This routine is invoked to set up SLI4 BAR0 PCI config space register
5662  * memory map.
5663  **/
5664 static void
5665 lpfc_sli4_bar0_register_memmap(struct lpfc_hba *phba, uint32_t if_type)
5666 {
5667         switch (if_type) {
5668         case LPFC_SLI_INTF_IF_TYPE_0:
5669                 phba->sli4_hba.u.if_type0.UERRLOregaddr =
5670                         phba->sli4_hba.conf_regs_memmap_p + LPFC_UERR_STATUS_LO;
5671                 phba->sli4_hba.u.if_type0.UERRHIregaddr =
5672                         phba->sli4_hba.conf_regs_memmap_p + LPFC_UERR_STATUS_HI;
5673                 phba->sli4_hba.u.if_type0.UEMASKLOregaddr =
5674                         phba->sli4_hba.conf_regs_memmap_p + LPFC_UE_MASK_LO;
5675                 phba->sli4_hba.u.if_type0.UEMASKHIregaddr =
5676                         phba->sli4_hba.conf_regs_memmap_p + LPFC_UE_MASK_HI;
5677                 phba->sli4_hba.SLIINTFregaddr =
5678                         phba->sli4_hba.conf_regs_memmap_p + LPFC_SLI_INTF;
5679                 break;
5680         case LPFC_SLI_INTF_IF_TYPE_2:
5681                 phba->sli4_hba.u.if_type2.ERR1regaddr =
5682                         phba->sli4_hba.conf_regs_memmap_p + LPFC_SLIPORT_ERR_1;
5683                 phba->sli4_hba.u.if_type2.ERR2regaddr =
5684                         phba->sli4_hba.conf_regs_memmap_p + LPFC_SLIPORT_ERR_2;
5685                 phba->sli4_hba.u.if_type2.CTRLregaddr =
5686                         phba->sli4_hba.conf_regs_memmap_p + LPFC_SLIPORT_CNTRL;
5687                 phba->sli4_hba.u.if_type2.STATUSregaddr =
5688                         phba->sli4_hba.conf_regs_memmap_p + LPFC_SLIPORT_STATUS;
5689                 phba->sli4_hba.SLIINTFregaddr =
5690                         phba->sli4_hba.conf_regs_memmap_p + LPFC_SLI_INTF;
5691                 phba->sli4_hba.PSMPHRregaddr =
5692                      phba->sli4_hba.conf_regs_memmap_p + LPFC_SLIPORT_IF2_SMPHR;
5693                 phba->sli4_hba.RQDBregaddr =
5694                         phba->sli4_hba.conf_regs_memmap_p + LPFC_RQ_DOORBELL;
5695                 phba->sli4_hba.WQDBregaddr =
5696                         phba->sli4_hba.conf_regs_memmap_p + LPFC_WQ_DOORBELL;
5697                 phba->sli4_hba.EQCQDBregaddr =
5698                         phba->sli4_hba.conf_regs_memmap_p + LPFC_EQCQ_DOORBELL;
5699                 phba->sli4_hba.MQDBregaddr =
5700                         phba->sli4_hba.conf_regs_memmap_p + LPFC_MQ_DOORBELL;
5701                 phba->sli4_hba.BMBXregaddr =
5702                         phba->sli4_hba.conf_regs_memmap_p + LPFC_BMBX;
5703                 break;
5704         case LPFC_SLI_INTF_IF_TYPE_1:
5705         default:
5706                 dev_printk(KERN_ERR, &phba->pcidev->dev,
5707                            "FATAL - unsupported SLI4 interface type - %d\n",
5708                            if_type);
5709                 break;
5710         }
5711 }
5712
5713 /**
5714  * lpfc_sli4_bar1_register_memmap - Set up SLI4 BAR1 register memory map.
5715  * @phba: pointer to lpfc hba data structure.
5716  *
5717  * This routine is invoked to set up SLI4 BAR1 control status register (CSR)
5718  * memory map.
5719  **/
5720 static void
5721 lpfc_sli4_bar1_register_memmap(struct lpfc_hba *phba)
5722 {
5723         phba->sli4_hba.PSMPHRregaddr = phba->sli4_hba.ctrl_regs_memmap_p +
5724                 LPFC_SLIPORT_IF0_SMPHR;
5725         phba->sli4_hba.ISRregaddr = phba->sli4_hba.ctrl_regs_memmap_p +
5726                 LPFC_HST_ISR0;
5727         phba->sli4_hba.IMRregaddr = phba->sli4_hba.ctrl_regs_memmap_p +
5728                 LPFC_HST_IMR0;
5729         phba->sli4_hba.ISCRregaddr = phba->sli4_hba.ctrl_regs_memmap_p +
5730                 LPFC_HST_ISCR0;
5731 }
5732
5733 /**
5734  * lpfc_sli4_bar2_register_memmap - Set up SLI4 BAR2 register memory map.
5735  * @phba: pointer to lpfc hba data structure.
5736  * @vf: virtual function number
5737  *
5738  * This routine is invoked to set up SLI4 BAR2 doorbell register memory map
5739  * based on the given viftual function number, @vf.
5740  *
5741  * Return 0 if successful, otherwise -ENODEV.
5742  **/
5743 static int
5744 lpfc_sli4_bar2_register_memmap(struct lpfc_hba *phba, uint32_t vf)
5745 {
5746         if (vf > LPFC_VIR_FUNC_MAX)
5747                 return -ENODEV;
5748
5749         phba->sli4_hba.RQDBregaddr = (phba->sli4_hba.drbl_regs_memmap_p +
5750                                 vf * LPFC_VFR_PAGE_SIZE + LPFC_RQ_DOORBELL);
5751         phba->sli4_hba.WQDBregaddr = (phba->sli4_hba.drbl_regs_memmap_p +
5752                                 vf * LPFC_VFR_PAGE_SIZE + LPFC_WQ_DOORBELL);
5753         phba->sli4_hba.EQCQDBregaddr = (phba->sli4_hba.drbl_regs_memmap_p +
5754                                 vf * LPFC_VFR_PAGE_SIZE + LPFC_EQCQ_DOORBELL);
5755         phba->sli4_hba.MQDBregaddr = (phba->sli4_hba.drbl_regs_memmap_p +
5756                                 vf * LPFC_VFR_PAGE_SIZE + LPFC_MQ_DOORBELL);
5757         phba->sli4_hba.BMBXregaddr = (phba->sli4_hba.drbl_regs_memmap_p +
5758                                 vf * LPFC_VFR_PAGE_SIZE + LPFC_BMBX);
5759         return 0;
5760 }
5761
5762 /**
5763  * lpfc_create_bootstrap_mbox - Create the bootstrap mailbox
5764  * @phba: pointer to lpfc hba data structure.
5765  *
5766  * This routine is invoked to create the bootstrap mailbox
5767  * region consistent with the SLI-4 interface spec.  This
5768  * routine allocates all memory necessary to communicate
5769  * mailbox commands to the port and sets up all alignment
5770  * needs.  No locks are expected to be held when calling
5771  * this routine.
5772  *
5773  * Return codes
5774  *      0 - successful
5775  *      -ENOMEM - could not allocated memory.
5776  **/
5777 static int
5778 lpfc_create_bootstrap_mbox(struct lpfc_hba *phba)
5779 {
5780         uint32_t bmbx_size;
5781         struct lpfc_dmabuf *dmabuf;
5782         struct dma_address *dma_address;
5783         uint32_t pa_addr;
5784         uint64_t phys_addr;
5785
5786         dmabuf = kzalloc(sizeof(struct lpfc_dmabuf), GFP_KERNEL);
5787         if (!dmabuf)
5788                 return -ENOMEM;
5789
5790         /*
5791          * The bootstrap mailbox region is comprised of 2 parts
5792          * plus an alignment restriction of 16 bytes.
5793          */
5794         bmbx_size = sizeof(struct lpfc_bmbx_create) + (LPFC_ALIGN_16_BYTE - 1);
5795         dmabuf->virt = dma_alloc_coherent(&phba->pcidev->dev,
5796                                           bmbx_size,
5797                                           &dmabuf->phys,
5798                                           GFP_KERNEL);
5799         if (!dmabuf->virt) {
5800                 kfree(dmabuf);
5801                 return -ENOMEM;
5802         }
5803         memset(dmabuf->virt, 0, bmbx_size);
5804
5805         /*
5806          * Initialize the bootstrap mailbox pointers now so that the register
5807          * operations are simple later.  The mailbox dma address is required
5808          * to be 16-byte aligned.  Also align the virtual memory as each
5809          * maibox is copied into the bmbx mailbox region before issuing the
5810          * command to the port.
5811          */
5812         phba->sli4_hba.bmbx.dmabuf = dmabuf;
5813         phba->sli4_hba.bmbx.bmbx_size = bmbx_size;
5814
5815         phba->sli4_hba.bmbx.avirt = PTR_ALIGN(dmabuf->virt,
5816                                               LPFC_ALIGN_16_BYTE);
5817         phba->sli4_hba.bmbx.aphys = ALIGN(dmabuf->phys,
5818                                               LPFC_ALIGN_16_BYTE);
5819
5820         /*
5821          * Set the high and low physical addresses now.  The SLI4 alignment
5822          * requirement is 16 bytes and the mailbox is posted to the port
5823          * as two 30-bit addresses.  The other data is a bit marking whether
5824          * the 30-bit address is the high or low address.
5825          * Upcast bmbx aphys to 64bits so shift instruction compiles
5826          * clean on 32 bit machines.
5827          */
5828         dma_address = &phba->sli4_hba.bmbx.dma_address;
5829         phys_addr = (uint64_t)phba->sli4_hba.bmbx.aphys;
5830         pa_addr = (uint32_t) ((phys_addr >> 34) & 0x3fffffff);
5831         dma_address->addr_hi = (uint32_t) ((pa_addr << 2) |
5832                                            LPFC_BMBX_BIT1_ADDR_HI);
5833
5834         pa_addr = (uint32_t) ((phba->sli4_hba.bmbx.aphys >> 4) & 0x3fffffff);
5835         dma_address->addr_lo = (uint32_t) ((pa_addr << 2) |
5836                                            LPFC_BMBX_BIT1_ADDR_LO);
5837         return 0;
5838 }
5839
5840 /**
5841  * lpfc_destroy_bootstrap_mbox - Destroy all bootstrap mailbox resources
5842  * @phba: pointer to lpfc hba data structure.
5843  *
5844  * This routine is invoked to teardown the bootstrap mailbox
5845  * region and release all host resources. This routine requires
5846  * the caller to ensure all mailbox commands recovered, no
5847  * additional mailbox comands are sent, and interrupts are disabled
5848  * before calling this routine.
5849  *
5850  **/
5851 static void
5852 lpfc_destroy_bootstrap_mbox(struct lpfc_hba *phba)
5853 {
5854         dma_free_coherent(&phba->pcidev->dev,
5855                           phba->sli4_hba.bmbx.bmbx_size,
5856                           phba->sli4_hba.bmbx.dmabuf->virt,
5857                           phba->sli4_hba.bmbx.dmabuf->phys);
5858
5859         kfree(phba->sli4_hba.bmbx.dmabuf);
5860         memset(&phba->sli4_hba.bmbx, 0, sizeof(struct lpfc_bmbx));
5861 }
5862
5863 /**
5864  * lpfc_sli4_read_config - Get the config parameters.
5865  * @phba: pointer to lpfc hba data structure.
5866  *
5867  * This routine is invoked to read the configuration parameters from the HBA.
5868  * The configuration parameters are used to set the base and maximum values
5869  * for RPI's XRI's VPI's VFI's and FCFIs. These values also affect the resource
5870  * allocation for the port.
5871  *
5872  * Return codes
5873  *      0 - successful
5874  *      -ENOMEM - No available memory
5875  *      -EIO - The mailbox failed to complete successfully.
5876  **/
5877 static int
5878 lpfc_sli4_read_config(struct lpfc_hba *phba)
5879 {
5880         LPFC_MBOXQ_t *pmb;
5881         struct lpfc_mbx_read_config *rd_config;
5882         union  lpfc_sli4_cfg_shdr *shdr;
5883         uint32_t shdr_status, shdr_add_status;
5884         struct lpfc_mbx_get_func_cfg *get_func_cfg;
5885         struct lpfc_rsrc_desc_fcfcoe *desc;
5886         uint32_t desc_count;
5887         int length, i, rc = 0;
5888
5889         pmb = (LPFC_MBOXQ_t *) mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
5890         if (!pmb) {
5891                 lpfc_printf_log(phba, KERN_ERR, LOG_SLI,
5892                                 "2011 Unable to allocate memory for issuing "
5893                                 "SLI_CONFIG_SPECIAL mailbox command\n");
5894                 return -ENOMEM;
5895         }
5896
5897         lpfc_read_config(phba, pmb);
5898
5899         rc = lpfc_sli_issue_mbox(phba, pmb, MBX_POLL);
5900         if (rc != MBX_SUCCESS) {
5901                 lpfc_printf_log(phba, KERN_ERR, LOG_SLI,
5902                         "2012 Mailbox failed , mbxCmd x%x "
5903                         "READ_CONFIG, mbxStatus x%x\n",
5904                         bf_get(lpfc_mqe_command, &pmb->u.mqe),
5905                         bf_get(lpfc_mqe_status, &pmb->u.mqe));
5906                 rc = -EIO;
5907         } else {
5908                 rd_config = &pmb->u.mqe.un.rd_config;
5909                 phba->sli4_hba.extents_in_use =
5910                         bf_get(lpfc_mbx_rd_conf_extnts_inuse, rd_config);
5911                 phba->sli4_hba.max_cfg_param.max_xri =
5912                         bf_get(lpfc_mbx_rd_conf_xri_count, rd_config);
5913                 phba->sli4_hba.max_cfg_param.xri_base =
5914                         bf_get(lpfc_mbx_rd_conf_xri_base, rd_config);
5915                 phba->sli4_hba.max_cfg_param.max_vpi =
5916                         bf_get(lpfc_mbx_rd_conf_vpi_count, rd_config);
5917                 phba->sli4_hba.max_cfg_param.vpi_base =
5918                         bf_get(lpfc_mbx_rd_conf_vpi_base, rd_config);
5919                 phba->sli4_hba.max_cfg_param.max_rpi =
5920                         bf_get(lpfc_mbx_rd_conf_rpi_count, rd_config);
5921                 phba->sli4_hba.max_cfg_param.rpi_base =
5922                         bf_get(lpfc_mbx_rd_conf_rpi_base, rd_config);
5923                 phba->sli4_hba.max_cfg_param.max_vfi =
5924                         bf_get(lpfc_mbx_rd_conf_vfi_count, rd_config);
5925                 phba->sli4_hba.max_cfg_param.vfi_base =
5926                         bf_get(lpfc_mbx_rd_conf_vfi_base, rd_config);
5927                 phba->sli4_hba.max_cfg_param.max_fcfi =
5928                         bf_get(lpfc_mbx_rd_conf_fcfi_count, rd_config);
5929                 phba->sli4_hba.max_cfg_param.max_eq =
5930                         bf_get(lpfc_mbx_rd_conf_eq_count, rd_config);
5931                 phba->sli4_hba.max_cfg_param.max_rq =
5932                         bf_get(lpfc_mbx_rd_conf_rq_count, rd_config);
5933                 phba->sli4_hba.max_cfg_param.max_wq =
5934                         bf_get(lpfc_mbx_rd_conf_wq_count, rd_config);
5935                 phba->sli4_hba.max_cfg_param.max_cq =
5936                         bf_get(lpfc_mbx_rd_conf_cq_count, rd_config);
5937                 phba->lmt = bf_get(lpfc_mbx_rd_conf_lmt, rd_config);
5938                 phba->sli4_hba.next_xri = phba->sli4_hba.max_cfg_param.xri_base;
5939                 phba->vpi_base = phba->sli4_hba.max_cfg_param.vpi_base;
5940                 phba->vfi_base = phba->sli4_hba.max_cfg_param.vfi_base;
5941                 phba->sli4_hba.next_rpi = phba->sli4_hba.max_cfg_param.rpi_base;
5942                 phba->max_vpi = (phba->sli4_hba.max_cfg_param.max_vpi > 0) ?
5943                                 (phba->sli4_hba.max_cfg_param.max_vpi - 1) : 0;
5944                 phba->max_vports = phba->max_vpi;
5945                 lpfc_printf_log(phba, KERN_INFO, LOG_SLI,
5946                                 "2003 cfg params Extents? %d "
5947                                 "XRI(B:%d M:%d), "
5948                                 "VPI(B:%d M:%d) "
5949                                 "VFI(B:%d M:%d) "
5950                                 "RPI(B:%d M:%d) "
5951                                 "FCFI(Count:%d)\n",
5952                                 phba->sli4_hba.extents_in_use,
5953                                 phba->sli4_hba.max_cfg_param.xri_base,
5954                                 phba->sli4_hba.max_cfg_param.max_xri,
5955                                 phba->sli4_hba.max_cfg_param.vpi_base,
5956                                 phba->sli4_hba.max_cfg_param.max_vpi,
5957                                 phba->sli4_hba.max_cfg_param.vfi_base,
5958                                 phba->sli4_hba.max_cfg_param.max_vfi,
5959                                 phba->sli4_hba.max_cfg_param.rpi_base,
5960                                 phba->sli4_hba.max_cfg_param.max_rpi,
5961                                 phba->sli4_hba.max_cfg_param.max_fcfi);
5962         }
5963
5964         if (rc)
5965                 goto read_cfg_out;
5966
5967         /* Reset the DFT_HBA_Q_DEPTH to the max xri  */
5968         if (phba->cfg_hba_queue_depth >
5969                 (phba->sli4_hba.max_cfg_param.max_xri -
5970                         lpfc_sli4_get_els_iocb_cnt(phba)))
5971                 phba->cfg_hba_queue_depth =
5972                         phba->sli4_hba.max_cfg_param.max_xri -
5973                                 lpfc_sli4_get_els_iocb_cnt(phba);
5974
5975         if (bf_get(lpfc_sli_intf_if_type, &phba->sli4_hba.sli_intf) !=
5976             LPFC_SLI_INTF_IF_TYPE_2)
5977                 goto read_cfg_out;
5978
5979         /* get the pf# and vf# for SLI4 if_type 2 port */
5980         length = (sizeof(struct lpfc_mbx_get_func_cfg) -
5981                   sizeof(struct lpfc_sli4_cfg_mhdr));
5982         lpfc_sli4_config(phba, pmb, LPFC_MBOX_SUBSYSTEM_COMMON,
5983                          LPFC_MBOX_OPCODE_GET_FUNCTION_CONFIG,
5984                          length, LPFC_SLI4_MBX_EMBED);
5985
5986         rc = lpfc_sli_issue_mbox(phba, pmb, MBX_POLL);
5987         shdr = (union lpfc_sli4_cfg_shdr *)
5988                                 &pmb->u.mqe.un.sli4_config.header.cfg_shdr;
5989         shdr_status = bf_get(lpfc_mbox_hdr_status, &shdr->response);
5990         shdr_add_status = bf_get(lpfc_mbox_hdr_add_status, &shdr->response);
5991         if (rc || shdr_status || shdr_add_status) {
5992                 lpfc_printf_log(phba, KERN_ERR, LOG_SLI,
5993                                 "3026 Mailbox failed , mbxCmd x%x "
5994                                 "GET_FUNCTION_CONFIG, mbxStatus x%x\n",
5995                                 bf_get(lpfc_mqe_command, &pmb->u.mqe),
5996                                 bf_get(lpfc_mqe_status, &pmb->u.mqe));
5997                 rc = -EIO;
5998                 goto read_cfg_out;
5999         }
6000
6001         /* search for fc_fcoe resrouce descriptor */
6002         get_func_cfg = &pmb->u.mqe.un.get_func_cfg;
6003         desc_count = get_func_cfg->func_cfg.rsrc_desc_count;
6004
6005         for (i = 0; i < LPFC_RSRC_DESC_MAX_NUM; i++) {
6006                 desc = (struct lpfc_rsrc_desc_fcfcoe *)
6007                         &get_func_cfg->func_cfg.desc[i];
6008                 if (LPFC_RSRC_DESC_TYPE_FCFCOE ==
6009                     bf_get(lpfc_rsrc_desc_pcie_type, desc)) {
6010                         phba->sli4_hba.iov.pf_number =
6011                                 bf_get(lpfc_rsrc_desc_fcfcoe_pfnum, desc);
6012                         phba->sli4_hba.iov.vf_number =
6013                                 bf_get(lpfc_rsrc_desc_fcfcoe_vfnum, desc);
6014                         break;
6015                 }
6016         }
6017
6018         if (i < LPFC_RSRC_DESC_MAX_NUM)
6019                 lpfc_printf_log(phba, KERN_INFO, LOG_SLI,
6020                                 "3027 GET_FUNCTION_CONFIG: pf_number:%d, "
6021                                 "vf_number:%d\n", phba->sli4_hba.iov.pf_number,
6022                                 phba->sli4_hba.iov.vf_number);
6023         else {
6024                 lpfc_printf_log(phba, KERN_ERR, LOG_SLI,
6025                                 "3028 GET_FUNCTION_CONFIG: failed to find "
6026                                 "Resrouce Descriptor:x%x\n",
6027                                 LPFC_RSRC_DESC_TYPE_FCFCOE);
6028                 rc = -EIO;
6029         }
6030
6031 read_cfg_out:
6032         mempool_free(pmb, phba->mbox_mem_pool);
6033         return rc;
6034 }
6035
6036 /**
6037  * lpfc_setup_endian_order - Write endian order to an SLI4 if_type 0 port.
6038  * @phba: pointer to lpfc hba data structure.
6039  *
6040  * This routine is invoked to setup the port-side endian order when
6041  * the port if_type is 0.  This routine has no function for other
6042  * if_types.
6043  *
6044  * Return codes
6045  *      0 - successful
6046  *      -ENOMEM - No available memory
6047  *      -EIO - The mailbox failed to complete successfully.
6048  **/
6049 static int
6050 lpfc_setup_endian_order(struct lpfc_hba *phba)
6051 {
6052         LPFC_MBOXQ_t *mboxq;
6053         uint32_t if_type, rc = 0;
6054         uint32_t endian_mb_data[2] = {HOST_ENDIAN_LOW_WORD0,
6055                                       HOST_ENDIAN_HIGH_WORD1};
6056
6057         if_type = bf_get(lpfc_sli_intf_if_type, &phba->sli4_hba.sli_intf);
6058         switch (if_type) {
6059         case LPFC_SLI_INTF_IF_TYPE_0:
6060                 mboxq = (LPFC_MBOXQ_t *) mempool_alloc(phba->mbox_mem_pool,
6061                                                        GFP_KERNEL);
6062                 if (!mboxq) {
6063                         lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
6064                                         "0492 Unable to allocate memory for "
6065                                         "issuing SLI_CONFIG_SPECIAL mailbox "
6066                                         "command\n");
6067                         return -ENOMEM;
6068                 }
6069
6070                 /*
6071                  * The SLI4_CONFIG_SPECIAL mailbox command requires the first
6072                  * two words to contain special data values and no other data.
6073                  */
6074                 memset(mboxq, 0, sizeof(LPFC_MBOXQ_t));
6075                 memcpy(&mboxq->u.mqe, &endian_mb_data, sizeof(endian_mb_data));
6076                 rc = lpfc_sli_issue_mbox(phba, mboxq, MBX_POLL);
6077                 if (rc != MBX_SUCCESS) {
6078                         lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
6079                                         "0493 SLI_CONFIG_SPECIAL mailbox "
6080                                         "failed with status x%x\n",
6081                                         rc);
6082                         rc = -EIO;
6083                 }
6084                 mempool_free(mboxq, phba->mbox_mem_pool);
6085                 break;
6086         case LPFC_SLI_INTF_IF_TYPE_2:
6087         case LPFC_SLI_INTF_IF_TYPE_1:
6088         default:
6089                 break;
6090         }
6091         return rc;
6092 }
6093
6094 /**
6095  * lpfc_sli4_queue_create - Create all the SLI4 queues
6096  * @phba: pointer to lpfc hba data structure.
6097  *
6098  * This routine is invoked to allocate all the SLI4 queues for the FCoE HBA
6099  * operation. For each SLI4 queue type, the parameters such as queue entry
6100  * count (queue depth) shall be taken from the module parameter. For now,
6101  * we just use some constant number as place holder.
6102  *
6103  * Return codes
6104  *      0 - successful
6105  *      -ENOMEM - No available memory
6106  *      -EIO - The mailbox failed to complete successfully.
6107  **/
6108 static int
6109 lpfc_sli4_queue_create(struct lpfc_hba *phba)
6110 {
6111         struct lpfc_queue *qdesc;
6112         int fcp_eqidx, fcp_cqidx, fcp_wqidx;
6113         int cfg_fcp_wq_count;
6114         int cfg_fcp_eq_count;
6115
6116         /*
6117          * Sanity check for confiugred queue parameters against the run-time
6118          * device parameters
6119          */
6120
6121         /* Sanity check on FCP fast-path WQ parameters */
6122         cfg_fcp_wq_count = phba->cfg_fcp_wq_count;
6123         if (cfg_fcp_wq_count >
6124             (phba->sli4_hba.max_cfg_param.max_wq - LPFC_SP_WQN_DEF)) {
6125                 cfg_fcp_wq_count = phba->sli4_hba.max_cfg_param.max_wq -
6126                                    LPFC_SP_WQN_DEF;
6127                 if (cfg_fcp_wq_count < LPFC_FP_WQN_MIN) {
6128                         lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
6129                                         "2581 Not enough WQs (%d) from "
6130                                         "the pci function for supporting "
6131                                         "FCP WQs (%d)\n",
6132                                         phba->sli4_hba.max_cfg_param.max_wq,
6133                                         phba->cfg_fcp_wq_count);
6134                         goto out_error;
6135                 }
6136                 lpfc_printf_log(phba, KERN_WARNING, LOG_INIT,
6137                                 "2582 Not enough WQs (%d) from the pci "
6138                                 "function for supporting the requested "
6139                                 "FCP WQs (%d), the actual FCP WQs can "
6140                                 "be supported: %d\n",
6141                                 phba->sli4_hba.max_cfg_param.max_wq,
6142                                 phba->cfg_fcp_wq_count, cfg_fcp_wq_count);
6143         }
6144         /* The actual number of FCP work queues adopted */
6145         phba->cfg_fcp_wq_count = cfg_fcp_wq_count;
6146
6147         /* Sanity check on FCP fast-path EQ parameters */
6148         cfg_fcp_eq_count = phba->cfg_fcp_eq_count;
6149         if (cfg_fcp_eq_count >
6150             (phba->sli4_hba.max_cfg_param.max_eq - LPFC_SP_EQN_DEF)) {
6151                 cfg_fcp_eq_count = phba->sli4_hba.max_cfg_param.max_eq -
6152                                    LPFC_SP_EQN_DEF;
6153                 if (cfg_fcp_eq_count < LPFC_FP_EQN_MIN) {
6154                         lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
6155                                         "2574 Not enough EQs (%d) from the "
6156                                         "pci function for supporting FCP "
6157                                         "EQs (%d)\n",
6158                                         phba->sli4_hba.max_cfg_param.max_eq,
6159                                         phba->cfg_fcp_eq_count);
6160                         goto out_error;
6161                 }
6162                 lpfc_printf_log(phba, KERN_WARNING, LOG_INIT,
6163                                 "2575 Not enough EQs (%d) from the pci "
6164                                 "function for supporting the requested "
6165                                 "FCP EQs (%d), the actual FCP EQs can "
6166                                 "be supported: %d\n",
6167                                 phba->sli4_hba.max_cfg_param.max_eq,
6168                                 phba->cfg_fcp_eq_count, cfg_fcp_eq_count);
6169         }
6170         /* It does not make sense to have more EQs than WQs */
6171         if (cfg_fcp_eq_count > phba->cfg_fcp_wq_count) {
6172                 lpfc_printf_log(phba, KERN_WARNING, LOG_INIT,
6173                                 "2593 The FCP EQ count(%d) cannot be greater "
6174                                 "than the FCP WQ count(%d), limiting the "
6175                                 "FCP EQ count to %d\n", cfg_fcp_eq_count,
6176                                 phba->cfg_fcp_wq_count,
6177                                 phba->cfg_fcp_wq_count);
6178                 cfg_fcp_eq_count = phba->cfg_fcp_wq_count;
6179         }
6180         /* The actual number of FCP event queues adopted */
6181         phba->cfg_fcp_eq_count = cfg_fcp_eq_count;
6182         /* The overall number of event queues used */
6183         phba->sli4_hba.cfg_eqn = phba->cfg_fcp_eq_count + LPFC_SP_EQN_DEF;
6184
6185         /*
6186          * Create Event Queues (EQs)
6187          */
6188
6189         /* Get EQ depth from module parameter, fake the default for now */
6190         phba->sli4_hba.eq_esize = LPFC_EQE_SIZE_4B;
6191         phba->sli4_hba.eq_ecount = LPFC_EQE_DEF_COUNT;
6192
6193         /* Create slow path event queue */
6194         qdesc = lpfc_sli4_queue_alloc(phba, phba->sli4_hba.eq_esize,
6195                                       phba->sli4_hba.eq_ecount);
6196         if (!qdesc) {
6197                 lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
6198                                 "0496 Failed allocate slow-path EQ\n");
6199                 goto out_error;
6200         }
6201         phba->sli4_hba.sp_eq = qdesc;
6202
6203         /* Create fast-path FCP Event Queue(s) */
6204         phba->sli4_hba.fp_eq = kzalloc((sizeof(struct lpfc_queue *) *
6205                                phba->cfg_fcp_eq_count), GFP_KERNEL);
6206         if (!phba->sli4_hba.fp_eq) {
6207                 lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
6208                                 "2576 Failed allocate memory for fast-path "
6209                                 "EQ record array\n");
6210                 goto out_free_sp_eq;
6211         }
6212         for (fcp_eqidx = 0; fcp_eqidx < phba->cfg_fcp_eq_count; fcp_eqidx++) {
6213                 qdesc = lpfc_sli4_queue_alloc(phba, phba->sli4_hba.eq_esize,
6214                                               phba->sli4_hba.eq_ecount);
6215                 if (!qdesc) {
6216                         lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
6217                                         "0497 Failed allocate fast-path EQ\n");
6218                         goto out_free_fp_eq;
6219                 }
6220                 phba->sli4_hba.fp_eq[fcp_eqidx] = qdesc;
6221         }
6222
6223         /*
6224          * Create Complete Queues (CQs)
6225          */
6226
6227         /* Get CQ depth from module parameter, fake the default for now */
6228         phba->sli4_hba.cq_esize = LPFC_CQE_SIZE;
6229         phba->sli4_hba.cq_ecount = LPFC_CQE_DEF_COUNT;
6230
6231         /* Create slow-path Mailbox Command Complete Queue */
6232         qdesc = lpfc_sli4_queue_alloc(phba, phba->sli4_hba.cq_esize,
6233                                       phba->sli4_hba.cq_ecount);
6234         if (!qdesc) {
6235                 lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
6236                                 "0500 Failed allocate slow-path mailbox CQ\n");
6237                 goto out_free_fp_eq;
6238         }
6239         phba->sli4_hba.mbx_cq = qdesc;
6240
6241         /* Create slow-path ELS Complete Queue */
6242         qdesc = lpfc_sli4_queue_alloc(phba, phba->sli4_hba.cq_esize,
6243                                       phba->sli4_hba.cq_ecount);
6244         if (!qdesc) {
6245                 lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
6246                                 "0501 Failed allocate slow-path ELS CQ\n");
6247                 goto out_free_mbx_cq;
6248         }
6249         phba->sli4_hba.els_cq = qdesc;
6250
6251
6252         /* Create fast-path FCP Completion Queue(s), one-to-one with EQs */
6253         phba->sli4_hba.fcp_cq = kzalloc((sizeof(struct lpfc_queue *) *
6254                                 phba->cfg_fcp_eq_count), GFP_KERNEL);
6255         if (!phba->sli4_hba.fcp_cq) {
6256                 lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
6257                                 "2577 Failed allocate memory for fast-path "
6258                                 "CQ record array\n");
6259                 goto out_free_els_cq;
6260         }
6261         for (fcp_cqidx = 0; fcp_cqidx < phba->cfg_fcp_eq_count; fcp_cqidx++) {
6262                 qdesc = lpfc_sli4_queue_alloc(phba, phba->sli4_hba.cq_esize,
6263                                               phba->sli4_hba.cq_ecount);
6264                 if (!qdesc) {
6265                         lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
6266                                         "0499 Failed allocate fast-path FCP "
6267                                         "CQ (%d)\n", fcp_cqidx);
6268                         goto out_free_fcp_cq;
6269                 }
6270                 phba->sli4_hba.fcp_cq[fcp_cqidx] = qdesc;
6271         }
6272
6273         /* Create Mailbox Command Queue */
6274         phba->sli4_hba.mq_esize = LPFC_MQE_SIZE;
6275         phba->sli4_hba.mq_ecount = LPFC_MQE_DEF_COUNT;
6276
6277         qdesc = lpfc_sli4_queue_alloc(phba, phba->sli4_hba.mq_esize,
6278                                       phba->sli4_hba.mq_ecount);
6279         if (!qdesc) {
6280                 lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
6281                                 "0505 Failed allocate slow-path MQ\n");
6282                 goto out_free_fcp_cq;
6283         }
6284         phba->sli4_hba.mbx_wq = qdesc;
6285
6286         /*
6287          * Create all the Work Queues (WQs)
6288          */
6289         phba->sli4_hba.wq_esize = LPFC_WQE_SIZE;
6290         phba->sli4_hba.wq_ecount = LPFC_WQE_DEF_COUNT;
6291
6292         /* Create slow-path ELS Work Queue */
6293         qdesc = lpfc_sli4_queue_alloc(phba, phba->sli4_hba.wq_esize,
6294                                       phba->sli4_hba.wq_ecount);
6295         if (!qdesc) {
6296                 lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
6297                                 "0504 Failed allocate slow-path ELS WQ\n");
6298                 goto out_free_mbx_wq;
6299         }
6300         phba->sli4_hba.els_wq = qdesc;
6301
6302         /* Create fast-path FCP Work Queue(s) */
6303         phba->sli4_hba.fcp_wq = kzalloc((sizeof(struct lpfc_queue *) *
6304                                 phba->cfg_fcp_wq_count), GFP_KERNEL);
6305         if (!phba->sli4_hba.fcp_wq) {
6306                 lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
6307                                 "2578 Failed allocate memory for fast-path "
6308                                 "WQ record array\n");
6309                 goto out_free_els_wq;
6310         }
6311         for (fcp_wqidx = 0; fcp_wqidx < phba->cfg_fcp_wq_count; fcp_wqidx++) {
6312                 qdesc = lpfc_sli4_queue_alloc(phba, phba->sli4_hba.wq_esize,
6313                                               phba->sli4_hba.wq_ecount);
6314                 if (!qdesc) {
6315                         lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
6316                                         "0503 Failed allocate fast-path FCP "
6317                                         "WQ (%d)\n", fcp_wqidx);
6318                         goto out_free_fcp_wq;
6319                 }
6320                 phba->sli4_hba.fcp_wq[fcp_wqidx] = qdesc;
6321         }
6322
6323         /*
6324          * Create Receive Queue (RQ)
6325          */
6326         phba->sli4_hba.rq_esize = LPFC_RQE_SIZE;
6327         phba->sli4_hba.rq_ecount = LPFC_RQE_DEF_COUNT;
6328
6329         /* Create Receive Queue for header */
6330         qdesc = lpfc_sli4_queue_alloc(phba, phba->sli4_hba.rq_esize,
6331                                       phba->sli4_hba.rq_ecount);
6332         if (!qdesc) {
6333                 lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
6334                                 "0506 Failed allocate receive HRQ\n");
6335                 goto out_free_fcp_wq;
6336         }
6337         phba->sli4_hba.hdr_rq = qdesc;
6338
6339         /* Create Receive Queue for data */
6340         qdesc = lpfc_sli4_queue_alloc(phba, phba->sli4_hba.rq_esize,
6341                                       phba->sli4_hba.rq_ecount);
6342         if (!qdesc) {
6343                 lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
6344                                 "0507 Failed allocate receive DRQ\n");
6345                 goto out_free_hdr_rq;
6346         }
6347         phba->sli4_hba.dat_rq = qdesc;
6348
6349         return 0;
6350
6351 out_free_hdr_rq:
6352         lpfc_sli4_queue_free(phba->sli4_hba.hdr_rq);
6353         phba->sli4_hba.hdr_rq = NULL;
6354 out_free_fcp_wq:
6355         for (--fcp_wqidx; fcp_wqidx >= 0; fcp_wqidx--) {
6356                 lpfc_sli4_queue_free(phba->sli4_hba.fcp_wq[fcp_wqidx]);
6357                 phba->sli4_hba.fcp_wq[fcp_wqidx] = NULL;
6358         }
6359         kfree(phba->sli4_hba.fcp_wq);
6360 out_free_els_wq:
6361         lpfc_sli4_queue_free(phba->sli4_hba.els_wq);
6362         phba->sli4_hba.els_wq = NULL;
6363 out_free_mbx_wq:
6364         lpfc_sli4_queue_free(phba->sli4_hba.mbx_wq);
6365         phba->sli4_hba.mbx_wq = NULL;
6366 out_free_fcp_cq:
6367         for (--fcp_cqidx; fcp_cqidx >= 0; fcp_cqidx--) {
6368                 lpfc_sli4_queue_free(phba->sli4_hba.fcp_cq[fcp_cqidx]);
6369                 phba->sli4_hba.fcp_cq[fcp_cqidx] = NULL;
6370         }
6371         kfree(phba->sli4_hba.fcp_cq);
6372 out_free_els_cq:
6373         lpfc_sli4_queue_free(phba->sli4_hba.els_cq);
6374         phba->sli4_hba.els_cq = NULL;
6375 out_free_mbx_cq:
6376         lpfc_sli4_queue_free(phba->sli4_hba.mbx_cq);
6377         phba->sli4_hba.mbx_cq = NULL;
6378 out_free_fp_eq:
6379         for (--fcp_eqidx; fcp_eqidx >= 0; fcp_eqidx--) {
6380                 lpfc_sli4_queue_free(phba->sli4_hba.fp_eq[fcp_eqidx]);
6381                 phba->sli4_hba.fp_eq[fcp_eqidx] = NULL;
6382         }
6383         kfree(phba->sli4_hba.fp_eq);
6384 out_free_sp_eq:
6385         lpfc_sli4_queue_free(phba->sli4_hba.sp_eq);
6386         phba->sli4_hba.sp_eq = NULL;
6387 out_error:
6388         return -ENOMEM;
6389 }
6390
6391 /**
6392  * lpfc_sli4_queue_destroy - Destroy all the SLI4 queues
6393  * @phba: pointer to lpfc hba data structure.
6394  *
6395  * This routine is invoked to release all the SLI4 queues with the FCoE HBA
6396  * operation.
6397  *
6398  * Return codes
6399  *      0 - successful
6400  *      -ENOMEM - No available memory
6401  *      -EIO - The mailbox failed to complete successfully.
6402  **/
6403 static void
6404 lpfc_sli4_queue_destroy(struct lpfc_hba *phba)
6405 {
6406         int fcp_qidx;
6407
6408         /* Release mailbox command work queue */
6409         lpfc_sli4_queue_free(phba->sli4_hba.mbx_wq);
6410         phba->sli4_hba.mbx_wq = NULL;
6411
6412         /* Release ELS work queue */
6413         lpfc_sli4_queue_free(phba->sli4_hba.els_wq);
6414         phba->sli4_hba.els_wq = NULL;
6415
6416         /* Release FCP work queue */
6417         for (fcp_qidx = 0; fcp_qidx < phba->cfg_fcp_wq_count; fcp_qidx++)
6418                 lpfc_sli4_queue_free(phba->sli4_hba.fcp_wq[fcp_qidx]);
6419         kfree(phba->sli4_hba.fcp_wq);
6420         phba->sli4_hba.fcp_wq = NULL;
6421
6422         /* Release unsolicited receive queue */
6423         lpfc_sli4_queue_free(phba->sli4_hba.hdr_rq);
6424         phba->sli4_hba.hdr_rq = NULL;
6425         lpfc_sli4_queue_free(phba->sli4_hba.dat_rq);
6426         phba->sli4_hba.dat_rq = NULL;
6427
6428         /* Release ELS complete queue */
6429         lpfc_sli4_queue_free(phba->sli4_hba.els_cq);
6430         phba->sli4_hba.els_cq = NULL;
6431
6432         /* Release mailbox command complete queue */
6433         lpfc_sli4_queue_free(phba->sli4_hba.mbx_cq);
6434         phba->sli4_hba.mbx_cq = NULL;
6435
6436         /* Release FCP response complete queue */
6437         fcp_qidx = 0;
6438         do
6439                 lpfc_sli4_queue_free(phba->sli4_hba.fcp_cq[fcp_qidx]);
6440         while (++fcp_qidx < phba->cfg_fcp_eq_count);
6441         kfree(phba->sli4_hba.fcp_cq);
6442         phba->sli4_hba.fcp_cq = NULL;
6443
6444         /* Release fast-path event queue */
6445         for (fcp_qidx = 0; fcp_qidx < phba->cfg_fcp_eq_count; fcp_qidx++)
6446                 lpfc_sli4_queue_free(phba->sli4_hba.fp_eq[fcp_qidx]);
6447         kfree(phba->sli4_hba.fp_eq);
6448         phba->sli4_hba.fp_eq = NULL;
6449
6450         /* Release slow-path event queue */
6451         lpfc_sli4_queue_free(phba->sli4_hba.sp_eq);
6452         phba->sli4_hba.sp_eq = NULL;
6453
6454         return;
6455 }
6456
6457 /**
6458  * lpfc_sli4_queue_setup - Set up all the SLI4 queues
6459  * @phba: pointer to lpfc hba data structure.
6460  *
6461  * This routine is invoked to set up all the SLI4 queues for the FCoE HBA
6462  * operation.
6463  *
6464  * Return codes
6465  *      0 - successful
6466  *      -ENOMEM - No available memory
6467  *      -EIO - The mailbox failed to complete successfully.
6468  **/
6469 int
6470 lpfc_sli4_queue_setup(struct lpfc_hba *phba)
6471 {
6472         int rc = -ENOMEM;
6473         int fcp_eqidx, fcp_cqidx, fcp_wqidx;
6474         int fcp_cq_index = 0;
6475
6476         /*
6477          * Set up Event Queues (EQs)
6478          */
6479
6480         /* Set up slow-path event queue */
6481         if (!phba->sli4_hba.sp_eq) {
6482                 lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
6483                                 "0520 Slow-path EQ not allocated\n");
6484                 goto out_error;
6485         }
6486         rc = lpfc_eq_create(phba, phba->sli4_hba.sp_eq,
6487                             LPFC_SP_DEF_IMAX);
6488         if (rc) {
6489                 lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
6490                                 "0521 Failed setup of slow-path EQ: "
6491                                 "rc = 0x%x\n", rc);
6492                 goto out_error;
6493         }
6494         lpfc_printf_log(phba, KERN_INFO, LOG_INIT,
6495                         "2583 Slow-path EQ setup: queue-id=%d\n",
6496                         phba->sli4_hba.sp_eq->queue_id);
6497
6498         /* Set up fast-path event queue */
6499         for (fcp_eqidx = 0; fcp_eqidx < phba->cfg_fcp_eq_count; fcp_eqidx++) {
6500                 if (!phba->sli4_hba.fp_eq[fcp_eqidx]) {
6501                         lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
6502                                         "0522 Fast-path EQ (%d) not "
6503                                         "allocated\n", fcp_eqidx);
6504                         goto out_destroy_fp_eq;
6505                 }
6506                 rc = lpfc_eq_create(phba, phba->sli4_hba.fp_eq[fcp_eqidx],
6507                                     phba->cfg_fcp_imax);
6508                 if (rc) {
6509                         lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
6510                                         "0523 Failed setup of fast-path EQ "
6511                                         "(%d), rc = 0x%x\n", fcp_eqidx, rc);
6512                         goto out_destroy_fp_eq;
6513                 }
6514                 lpfc_printf_log(phba, KERN_INFO, LOG_INIT,
6515                                 "2584 Fast-path EQ setup: "
6516                                 "queue[%d]-id=%d\n", fcp_eqidx,
6517                                 phba->sli4_hba.fp_eq[fcp_eqidx]->queue_id);
6518         }
6519
6520         /*
6521          * Set up Complete Queues (CQs)
6522          */
6523
6524         /* Set up slow-path MBOX Complete Queue as the first CQ */
6525         if (!phba->sli4_hba.mbx_cq) {
6526                 lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
6527                                 "0528 Mailbox CQ not allocated\n");
6528                 goto out_destroy_fp_eq;
6529         }
6530         rc = lpfc_cq_create(phba, phba->sli4_hba.mbx_cq, phba->sli4_hba.sp_eq,
6531                             LPFC_MCQ, LPFC_MBOX);
6532         if (rc) {
6533                 lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
6534                                 "0529 Failed setup of slow-path mailbox CQ: "
6535                                 "rc = 0x%x\n", rc);
6536                 goto out_destroy_fp_eq;
6537         }
6538         lpfc_printf_log(phba, KERN_INFO, LOG_INIT,
6539                         "2585 MBX CQ setup: cq-id=%d, parent eq-id=%d\n",
6540                         phba->sli4_hba.mbx_cq->queue_id,
6541                         phba->sli4_hba.sp_eq->queue_id);
6542
6543         /* Set up slow-path ELS Complete Queue */
6544         if (!phba->sli4_hba.els_cq) {
6545                 lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
6546                                 "0530 ELS CQ not allocated\n");
6547                 goto out_destroy_mbx_cq;
6548         }
6549         rc = lpfc_cq_create(phba, phba->sli4_hba.els_cq, phba->sli4_hba.sp_eq,
6550                             LPFC_WCQ, LPFC_ELS);
6551         if (rc) {
6552                 lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
6553                                 "0531 Failed setup of slow-path ELS CQ: "
6554                                 "rc = 0x%x\n", rc);
6555                 goto out_destroy_mbx_cq;
6556         }
6557         lpfc_printf_log(phba, KERN_INFO, LOG_INIT,
6558                         "2586 ELS CQ setup: cq-id=%d, parent eq-id=%d\n",
6559                         phba->sli4_hba.els_cq->queue_id,
6560                         phba->sli4_hba.sp_eq->queue_id);
6561
6562         /* Set up fast-path FCP Response Complete Queue */
6563         fcp_cqidx = 0;
6564         do {
6565                 if (!phba->sli4_hba.fcp_cq[fcp_cqidx]) {
6566                         lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
6567                                         "0526 Fast-path FCP CQ (%d) not "
6568                                         "allocated\n", fcp_cqidx);
6569                         goto out_destroy_fcp_cq;
6570                 }
6571                 if (phba->cfg_fcp_eq_count)
6572                         rc = lpfc_cq_create(phba,
6573                                             phba->sli4_hba.fcp_cq[fcp_cqidx],
6574                                             phba->sli4_hba.fp_eq[fcp_cqidx],
6575                                             LPFC_WCQ, LPFC_FCP);
6576                 else
6577                         rc = lpfc_cq_create(phba,
6578                                             phba->sli4_hba.fcp_cq[fcp_cqidx],
6579                                             phba->sli4_hba.sp_eq,
6580                                             LPFC_WCQ, LPFC_FCP);
6581                 if (rc) {
6582                         lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
6583                                         "0527 Failed setup of fast-path FCP "
6584                                         "CQ (%d), rc = 0x%x\n", fcp_cqidx, rc);
6585                         goto out_destroy_fcp_cq;
6586                 }
6587                 lpfc_printf_log(phba, KERN_INFO, LOG_INIT,
6588                                 "2588 FCP CQ setup: cq[%d]-id=%d, "
6589                                 "parent %seq[%d]-id=%d\n",
6590                                 fcp_cqidx,
6591                                 phba->sli4_hba.fcp_cq[fcp_cqidx]->queue_id,
6592                                 (phba->cfg_fcp_eq_count) ? "" : "sp_",
6593                                 fcp_cqidx,
6594                                 (phba->cfg_fcp_eq_count) ?
6595                                    phba->sli4_hba.fp_eq[fcp_cqidx]->queue_id :
6596                                    phba->sli4_hba.sp_eq->queue_id);
6597         } while (++fcp_cqidx < phba->cfg_fcp_eq_count);
6598
6599         /*
6600          * Set up all the Work Queues (WQs)
6601          */
6602
6603         /* Set up Mailbox Command Queue */
6604         if (!phba->sli4_hba.mbx_wq) {
6605                 lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
6606                                 "0538 Slow-path MQ not allocated\n");
6607                 goto out_destroy_fcp_cq;
6608         }
6609         rc = lpfc_mq_create(phba, phba->sli4_hba.mbx_wq,
6610                             phba->sli4_hba.mbx_cq, LPFC_MBOX);
6611         if (rc) {
6612                 lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
6613                                 "0539 Failed setup of slow-path MQ: "
6614                                 "rc = 0x%x\n", rc);
6615                 goto out_destroy_fcp_cq;
6616         }
6617         lpfc_printf_log(phba, KERN_INFO, LOG_INIT,
6618                         "2589 MBX MQ setup: wq-id=%d, parent cq-id=%d\n",
6619                         phba->sli4_hba.mbx_wq->queue_id,
6620                         phba->sli4_hba.mbx_cq->queue_id);
6621
6622         /* Set up slow-path ELS Work Queue */
6623         if (!phba->sli4_hba.els_wq) {
6624                 lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
6625                                 "0536 Slow-path ELS WQ not allocated\n");
6626                 goto out_destroy_mbx_wq;
6627         }
6628         rc = lpfc_wq_create(phba, phba->sli4_hba.els_wq,
6629                             phba->sli4_hba.els_cq, LPFC_ELS);
6630         if (rc) {
6631                 lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
6632                                 "0537 Failed setup of slow-path ELS WQ: "
6633                                 "rc = 0x%x\n", rc);
6634                 goto out_destroy_mbx_wq;
6635         }
6636         lpfc_printf_log(phba, KERN_INFO, LOG_INIT,
6637                         "2590 ELS WQ setup: wq-id=%d, parent cq-id=%d\n",
6638                         phba->sli4_hba.els_wq->queue_id,
6639                         phba->sli4_hba.els_cq->queue_id);
6640
6641         /* Set up fast-path FCP Work Queue */
6642         for (fcp_wqidx = 0; fcp_wqidx < phba->cfg_fcp_wq_count; fcp_wqidx++) {
6643                 if (!phba->sli4_hba.fcp_wq[fcp_wqidx]) {
6644                         lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
6645                                         "0534 Fast-path FCP WQ (%d) not "
6646                                         "allocated\n", fcp_wqidx);
6647                         goto out_destroy_fcp_wq;
6648                 }
6649                 rc = lpfc_wq_create(phba, phba->sli4_hba.fcp_wq[fcp_wqidx],
6650                                     phba->sli4_hba.fcp_cq[fcp_cq_index],
6651                                     LPFC_FCP);
6652                 if (rc) {
6653                         lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
6654                                         "0535 Failed setup of fast-path FCP "
6655                                         "WQ (%d), rc = 0x%x\n", fcp_wqidx, rc);
6656                         goto out_destroy_fcp_wq;
6657                 }
6658                 lpfc_printf_log(phba, KERN_INFO, LOG_INIT,
6659                                 "2591 FCP WQ setup: wq[%d]-id=%d, "
6660                                 "parent cq[%d]-id=%d\n",
6661                                 fcp_wqidx,
6662                                 phba->sli4_hba.fcp_wq[fcp_wqidx]->queue_id,
6663                                 fcp_cq_index,
6664                                 phba->sli4_hba.fcp_cq[fcp_cq_index]->queue_id);
6665                 /* Round robin FCP Work Queue's Completion Queue assignment */
6666                 if (phba->cfg_fcp_eq_count)
6667                         fcp_cq_index = ((fcp_cq_index + 1) %
6668                                         phba->cfg_fcp_eq_count);
6669         }
6670
6671         /*
6672          * Create Receive Queue (RQ)
6673          */
6674         if (!phba->sli4_hba.hdr_rq || !phba->sli4_hba.dat_rq) {
6675                 lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
6676                                 "0540 Receive Queue not allocated\n");
6677                 goto out_destroy_fcp_wq;
6678         }
6679         rc = lpfc_rq_create(phba, phba->sli4_hba.hdr_rq, phba->sli4_hba.dat_rq,
6680                             phba->sli4_hba.els_cq, LPFC_USOL);
6681         if (rc) {
6682                 lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
6683                                 "0541 Failed setup of Receive Queue: "
6684                                 "rc = 0x%x\n", rc);
6685                 goto out_destroy_fcp_wq;
6686         }
6687         lpfc_printf_log(phba, KERN_INFO, LOG_INIT,
6688                         "2592 USL RQ setup: hdr-rq-id=%d, dat-rq-id=%d "
6689                         "parent cq-id=%d\n",
6690                         phba->sli4_hba.hdr_rq->queue_id,
6691                         phba->sli4_hba.dat_rq->queue_id,
6692                         phba->sli4_hba.els_cq->queue_id);
6693         return 0;
6694
6695 out_destroy_fcp_wq:
6696         for (--fcp_wqidx; fcp_wqidx >= 0; fcp_wqidx--)
6697                 lpfc_wq_destroy(phba, phba->sli4_hba.fcp_wq[fcp_wqidx]);
6698         lpfc_wq_destroy(phba, phba->sli4_hba.els_wq);
6699 out_destroy_mbx_wq:
6700         lpfc_mq_destroy(phba, phba->sli4_hba.mbx_wq);
6701 out_destroy_fcp_cq:
6702         for (--fcp_cqidx; fcp_cqidx >= 0; fcp_cqidx--)
6703                 lpfc_cq_destroy(phba, phba->sli4_hba.fcp_cq[fcp_cqidx]);
6704         lpfc_cq_destroy(phba, phba->sli4_hba.els_cq);
6705 out_destroy_mbx_cq:
6706         lpfc_cq_destroy(phba, phba->sli4_hba.mbx_cq);
6707 out_destroy_fp_eq:
6708         for (--fcp_eqidx; fcp_eqidx >= 0; fcp_eqidx--)
6709                 lpfc_eq_destroy(phba, phba->sli4_hba.fp_eq[fcp_eqidx]);
6710         lpfc_eq_destroy(phba, phba->sli4_hba.sp_eq);
6711 out_error:
6712         return rc;
6713 }
6714
6715 /**
6716  * lpfc_sli4_queue_unset - Unset all the SLI4 queues
6717  * @phba: pointer to lpfc hba data structure.
6718  *
6719  * This routine is invoked to unset all the SLI4 queues with the FCoE HBA
6720  * operation.
6721  *
6722  * Return codes
6723  *      0 - successful
6724  *      -ENOMEM - No available memory
6725  *      -EIO - The mailbox failed to complete successfully.
6726  **/
6727 void
6728 lpfc_sli4_queue_unset(struct lpfc_hba *phba)
6729 {
6730         int fcp_qidx;
6731
6732         /* Unset mailbox command work queue */
6733         lpfc_mq_destroy(phba, phba->sli4_hba.mbx_wq);
6734         /* Unset ELS work queue */
6735         lpfc_wq_destroy(phba, phba->sli4_hba.els_wq);
6736         /* Unset unsolicited receive queue */
6737         lpfc_rq_destroy(phba, phba->sli4_hba.hdr_rq, phba->sli4_hba.dat_rq);
6738         /* Unset FCP work queue */
6739         for (fcp_qidx = 0; fcp_qidx < phba->cfg_fcp_wq_count; fcp_qidx++)
6740                 lpfc_wq_destroy(phba, phba->sli4_hba.fcp_wq[fcp_qidx]);
6741         /* Unset mailbox command complete queue */
6742         lpfc_cq_destroy(phba, phba->sli4_hba.mbx_cq);
6743         /* Unset ELS complete queue */
6744         lpfc_cq_destroy(phba, phba->sli4_hba.els_cq);
6745         /* Unset FCP response complete queue */
6746         for (fcp_qidx = 0; fcp_qidx < phba->cfg_fcp_eq_count; fcp_qidx++)
6747                 lpfc_cq_destroy(phba, phba->sli4_hba.fcp_cq[fcp_qidx]);
6748         /* Unset fast-path event queue */
6749         for (fcp_qidx = 0; fcp_qidx < phba->cfg_fcp_eq_count; fcp_qidx++)
6750                 lpfc_eq_destroy(phba, phba->sli4_hba.fp_eq[fcp_qidx]);
6751         /* Unset slow-path event queue */
6752         lpfc_eq_destroy(phba, phba->sli4_hba.sp_eq);
6753 }
6754
6755 /**
6756  * lpfc_sli4_cq_event_pool_create - Create completion-queue event free pool
6757  * @phba: pointer to lpfc hba data structure.
6758  *
6759  * This routine is invoked to allocate and set up a pool of completion queue
6760  * events. The body of the completion queue event is a completion queue entry
6761  * CQE. For now, this pool is used for the interrupt service routine to queue
6762  * the following HBA completion queue events for the worker thread to process:
6763  *   - Mailbox asynchronous events
6764  *   - Receive queue completion unsolicited events
6765  * Later, this can be used for all the slow-path events.
6766  *
6767  * Return codes
6768  *      0 - successful
6769  *      -ENOMEM - No available memory
6770  **/
6771 static int
6772 lpfc_sli4_cq_event_pool_create(struct lpfc_hba *phba)
6773 {
6774         struct lpfc_cq_event *cq_event;
6775         int i;
6776
6777         for (i = 0; i < (4 * phba->sli4_hba.cq_ecount); i++) {
6778                 cq_event = kmalloc(sizeof(struct lpfc_cq_event), GFP_KERNEL);
6779                 if (!cq_event)
6780                         goto out_pool_create_fail;
6781                 list_add_tail(&cq_event->list,
6782                               &phba->sli4_hba.sp_cqe_event_pool);
6783         }
6784         return 0;
6785
6786 out_pool_create_fail:
6787         lpfc_sli4_cq_event_pool_destroy(phba);
6788         return -ENOMEM;
6789 }
6790
6791 /**
6792  * lpfc_sli4_cq_event_pool_destroy - Free completion-queue event free pool
6793  * @phba: pointer to lpfc hba data structure.
6794  *
6795  * This routine is invoked to free the pool of completion queue events at
6796  * driver unload time. Note that, it is the responsibility of the driver
6797  * cleanup routine to free all the outstanding completion-queue events
6798  * allocated from this pool back into the pool before invoking this routine
6799  * to destroy the pool.
6800  **/
6801 static void
6802 lpfc_sli4_cq_event_pool_destroy(struct lpfc_hba *phba)
6803 {
6804         struct lpfc_cq_event *cq_event, *next_cq_event;
6805
6806         list_for_each_entry_safe(cq_event, next_cq_event,
6807                                  &phba->sli4_hba.sp_cqe_event_pool, list) {
6808                 list_del(&cq_event->list);
6809                 kfree(cq_event);
6810         }
6811 }
6812
6813 /**
6814  * __lpfc_sli4_cq_event_alloc - Allocate a completion-queue event from free pool
6815  * @phba: pointer to lpfc hba data structure.
6816  *
6817  * This routine is the lock free version of the API invoked to allocate a
6818  * completion-queue event from the free pool.
6819  *
6820  * Return: Pointer to the newly allocated completion-queue event if successful
6821  *         NULL otherwise.
6822  **/
6823 struct lpfc_cq_event *
6824 __lpfc_sli4_cq_event_alloc(struct lpfc_hba *phba)
6825 {
6826         struct lpfc_cq_event *cq_event = NULL;
6827
6828         list_remove_head(&phba->sli4_hba.sp_cqe_event_pool, cq_event,
6829                          struct lpfc_cq_event, list);
6830         return cq_event;
6831 }
6832
6833 /**
6834  * lpfc_sli4_cq_event_alloc - Allocate a completion-queue event from free pool
6835  * @phba: pointer to lpfc hba data structure.
6836  *
6837  * This routine is the lock version of the API invoked to allocate a
6838  * completion-queue event from the free pool.
6839  *
6840  * Return: Pointer to the newly allocated completion-queue event if successful
6841  *         NULL otherwise.
6842  **/
6843 struct lpfc_cq_event *
6844 lpfc_sli4_cq_event_alloc(struct lpfc_hba *phba)
6845 {
6846         struct lpfc_cq_event *cq_event;
6847         unsigned long iflags;
6848
6849         spin_lock_irqsave(&phba->hbalock, iflags);
6850         cq_event = __lpfc_sli4_cq_event_alloc(phba);
6851         spin_unlock_irqrestore(&phba->hbalock, iflags);
6852         return cq_event;
6853 }
6854
6855 /**
6856  * __lpfc_sli4_cq_event_release - Release a completion-queue event to free pool
6857  * @phba: pointer to lpfc hba data structure.
6858  * @cq_event: pointer to the completion queue event to be freed.
6859  *
6860  * This routine is the lock free version of the API invoked to release a
6861  * completion-queue event back into the free pool.
6862  **/
6863 void
6864 __lpfc_sli4_cq_event_release(struct lpfc_hba *phba,
6865                              struct lpfc_cq_event *cq_event)
6866 {
6867         list_add_tail(&cq_event->list, &phba->sli4_hba.sp_cqe_event_pool);
6868 }
6869
6870 /**
6871  * lpfc_sli4_cq_event_release - Release a completion-queue event to free pool
6872  * @phba: pointer to lpfc hba data structure.
6873  * @cq_event: pointer to the completion queue event to be freed.
6874  *
6875  * This routine is the lock version of the API invoked to release a
6876  * completion-queue event back into the free pool.
6877  **/
6878 void
6879 lpfc_sli4_cq_event_release(struct lpfc_hba *phba,
6880                            struct lpfc_cq_event *cq_event)
6881 {
6882         unsigned long iflags;
6883         spin_lock_irqsave(&phba->hbalock, iflags);
6884         __lpfc_sli4_cq_event_release(phba, cq_event);
6885         spin_unlock_irqrestore(&phba->hbalock, iflags);
6886 }
6887
6888 /**
6889  * lpfc_sli4_cq_event_release_all - Release all cq events to the free pool
6890  * @phba: pointer to lpfc hba data structure.
6891  *
6892  * This routine is to free all the pending completion-queue events to the
6893  * back into the free pool for device reset.
6894  **/
6895 static void
6896 lpfc_sli4_cq_event_release_all(struct lpfc_hba *phba)
6897 {
6898         LIST_HEAD(cqelist);
6899         struct lpfc_cq_event *cqe;
6900         unsigned long iflags;
6901
6902         /* Retrieve all the pending WCQEs from pending WCQE lists */
6903         spin_lock_irqsave(&phba->hbalock, iflags);
6904         /* Pending FCP XRI abort events */
6905         list_splice_init(&phba->sli4_hba.sp_fcp_xri_aborted_work_queue,
6906                          &cqelist);
6907         /* Pending ELS XRI abort events */
6908         list_splice_init(&phba->sli4_hba.sp_els_xri_aborted_work_queue,
6909                          &cqelist);
6910         /* Pending asynnc events */
6911         list_splice_init(&phba->sli4_hba.sp_asynce_work_queue,
6912                          &cqelist);
6913         spin_unlock_irqrestore(&phba->hbalock, iflags);
6914
6915         while (!list_empty(&cqelist)) {
6916                 list_remove_head(&cqelist, cqe, struct lpfc_cq_event, list);
6917                 lpfc_sli4_cq_event_release(phba, cqe);
6918         }
6919 }
6920
6921 /**
6922  * lpfc_pci_function_reset - Reset pci function.
6923  * @phba: pointer to lpfc hba data structure.
6924  *
6925  * This routine is invoked to request a PCI function reset. It will destroys
6926  * all resources assigned to the PCI function which originates this request.
6927  *
6928  * Return codes
6929  *      0 - successful
6930  *      -ENOMEM - No available memory
6931  *      -EIO - The mailbox failed to complete successfully.
6932  **/
6933 int
6934 lpfc_pci_function_reset(struct lpfc_hba *phba)
6935 {
6936         LPFC_MBOXQ_t *mboxq;
6937         uint32_t rc = 0, if_type;
6938         uint32_t shdr_status, shdr_add_status;
6939         uint32_t rdy_chk, num_resets = 0, reset_again = 0;
6940         union lpfc_sli4_cfg_shdr *shdr;
6941         struct lpfc_register reg_data;
6942
6943         if_type = bf_get(lpfc_sli_intf_if_type, &phba->sli4_hba.sli_intf);
6944         switch (if_type) {
6945         case LPFC_SLI_INTF_IF_TYPE_0:
6946                 mboxq = (LPFC_MBOXQ_t *) mempool_alloc(phba->mbox_mem_pool,
6947                                                        GFP_KERNEL);
6948                 if (!mboxq) {
6949                         lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
6950                                         "0494 Unable to allocate memory for "
6951                                         "issuing SLI_FUNCTION_RESET mailbox "
6952                                         "command\n");
6953                         return -ENOMEM;
6954                 }
6955
6956                 /* Setup PCI function reset mailbox-ioctl command */
6957                 lpfc_sli4_config(phba, mboxq, LPFC_MBOX_SUBSYSTEM_COMMON,
6958                                  LPFC_MBOX_OPCODE_FUNCTION_RESET, 0,
6959                                  LPFC_SLI4_MBX_EMBED);
6960                 rc = lpfc_sli_issue_mbox(phba, mboxq, MBX_POLL);
6961                 shdr = (union lpfc_sli4_cfg_shdr *)
6962                         &mboxq->u.mqe.un.sli4_config.header.cfg_shdr;
6963                 shdr_status = bf_get(lpfc_mbox_hdr_status, &shdr->response);
6964                 shdr_add_status = bf_get(lpfc_mbox_hdr_add_status,
6965                                          &shdr->response);
6966                 if (rc != MBX_TIMEOUT)
6967                         mempool_free(mboxq, phba->mbox_mem_pool);
6968                 if (shdr_status || shdr_add_status || rc) {
6969                         lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
6970                                         "0495 SLI_FUNCTION_RESET mailbox "
6971                                         "failed with status x%x add_status x%x,"
6972                                         " mbx status x%x\n",
6973                                         shdr_status, shdr_add_status, rc);
6974                         rc = -ENXIO;
6975                 }
6976                 break;
6977         case LPFC_SLI_INTF_IF_TYPE_2:
6978                 for (num_resets = 0;
6979                      num_resets < MAX_IF_TYPE_2_RESETS;
6980                      num_resets++) {
6981                         reg_data.word0 = 0;
6982                         bf_set(lpfc_sliport_ctrl_end, &reg_data,
6983                                LPFC_SLIPORT_LITTLE_ENDIAN);
6984                         bf_set(lpfc_sliport_ctrl_ip, &reg_data,
6985                                LPFC_SLIPORT_INIT_PORT);
6986                         writel(reg_data.word0, phba->sli4_hba.u.if_type2.
6987                                CTRLregaddr);
6988
6989                         /*
6990                          * Poll the Port Status Register and wait for RDY for
6991                          * up to 10 seconds.  If the port doesn't respond, treat
6992                          * it as an error.  If the port responds with RN, start
6993                          * the loop again.
6994                          */
6995                         for (rdy_chk = 0; rdy_chk < 1000; rdy_chk++) {
6996                                 if (lpfc_readl(phba->sli4_hba.u.if_type2.
6997                                               STATUSregaddr, &reg_data.word0)) {
6998                                         rc = -ENODEV;
6999                                         break;
7000                                 }
7001                                 if (bf_get(lpfc_sliport_status_rdy, &reg_data))
7002                                         break;
7003                                 if (bf_get(lpfc_sliport_status_rn, &reg_data)) {
7004                                         reset_again++;
7005                                         break;
7006                                 }
7007                                 msleep(10);
7008                         }
7009
7010                         /*
7011                          * If the port responds to the init request with
7012                          * reset needed, delay for a bit and restart the loop.
7013                          */
7014                         if (reset_again) {
7015                                 msleep(10);
7016                                 reset_again = 0;
7017                                 continue;
7018                         }
7019
7020                         /* Detect any port errors. */
7021                         if (lpfc_readl(phba->sli4_hba.u.if_type2.STATUSregaddr,
7022                                  &reg_data.word0)) {
7023                                 rc = -ENODEV;
7024                                 break;
7025                         }
7026                         if ((bf_get(lpfc_sliport_status_err, &reg_data)) ||
7027                             (rdy_chk >= 1000)) {
7028                                 phba->work_status[0] = readl(
7029                                         phba->sli4_hba.u.if_type2.ERR1regaddr);
7030                                 phba->work_status[1] = readl(
7031                                         phba->sli4_hba.u.if_type2.ERR2regaddr);
7032                                 lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
7033                                         "2890 Port Error Detected "
7034                                         "during Port Reset: "
7035                                         "port status reg 0x%x, "
7036                                         "error 1=0x%x, error 2=0x%x\n",
7037                                         reg_data.word0,
7038                                         phba->work_status[0],
7039                                         phba->work_status[1]);
7040                                 rc = -ENODEV;
7041                         }
7042
7043                         /*
7044                          * Terminate the outer loop provided the Port indicated
7045                          * ready within 10 seconds.
7046                          */
7047                         if (rdy_chk < 1000)
7048                                 break;
7049                 }
7050                 /* delay driver action following IF_TYPE_2 function reset */
7051                 msleep(100);
7052                 break;
7053         case LPFC_SLI_INTF_IF_TYPE_1:
7054         default:
7055                 break;
7056         }
7057
7058         /* Catch the not-ready port failure after a port reset. */
7059         if (num_resets >= MAX_IF_TYPE_2_RESETS)
7060                 rc = -ENODEV;
7061
7062         return rc;
7063 }
7064
7065 /**
7066  * lpfc_sli4_send_nop_mbox_cmds - Send sli-4 nop mailbox commands
7067  * @phba: pointer to lpfc hba data structure.
7068  * @cnt: number of nop mailbox commands to send.
7069  *
7070  * This routine is invoked to send a number @cnt of NOP mailbox command and
7071  * wait for each command to complete.
7072  *
7073  * Return: the number of NOP mailbox command completed.
7074  **/
7075 static int
7076 lpfc_sli4_send_nop_mbox_cmds(struct lpfc_hba *phba, uint32_t cnt)
7077 {
7078         LPFC_MBOXQ_t *mboxq;
7079         int length, cmdsent;
7080         uint32_t mbox_tmo;
7081         uint32_t rc = 0;
7082         uint32_t shdr_status, shdr_add_status;
7083         union lpfc_sli4_cfg_shdr *shdr;
7084
7085         if (cnt == 0) {
7086                 lpfc_printf_log(phba, KERN_WARNING, LOG_INIT,
7087                                 "2518 Requested to send 0 NOP mailbox cmd\n");
7088                 return cnt;
7089         }
7090
7091         mboxq = (LPFC_MBOXQ_t *)mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
7092         if (!mboxq) {
7093                 lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
7094                                 "2519 Unable to allocate memory for issuing "
7095                                 "NOP mailbox command\n");
7096                 return 0;
7097         }
7098
7099         /* Set up NOP SLI4_CONFIG mailbox-ioctl command */
7100         length = (sizeof(struct lpfc_mbx_nop) -
7101                   sizeof(struct lpfc_sli4_cfg_mhdr));
7102         lpfc_sli4_config(phba, mboxq, LPFC_MBOX_SUBSYSTEM_COMMON,
7103                          LPFC_MBOX_OPCODE_NOP, length, LPFC_SLI4_MBX_EMBED);
7104
7105         mbox_tmo = lpfc_mbox_tmo_val(phba, MBX_SLI4_CONFIG);
7106         for (cmdsent = 0; cmdsent < cnt; cmdsent++) {
7107                 if (!phba->sli4_hba.intr_enable)
7108                         rc = lpfc_sli_issue_mbox(phba, mboxq, MBX_POLL);
7109                 else
7110                         rc = lpfc_sli_issue_mbox_wait(phba, mboxq, mbox_tmo);
7111                 if (rc == MBX_TIMEOUT)
7112                         break;
7113                 /* Check return status */
7114                 shdr = (union lpfc_sli4_cfg_shdr *)
7115                         &mboxq->u.mqe.un.sli4_config.header.cfg_shdr;
7116                 shdr_status = bf_get(lpfc_mbox_hdr_status, &shdr->response);
7117                 shdr_add_status = bf_get(lpfc_mbox_hdr_add_status,
7118                                          &shdr->response);
7119                 if (shdr_status || shdr_add_status || rc) {
7120                         lpfc_printf_log(phba, KERN_WARNING, LOG_INIT,
7121                                         "2520 NOP mailbox command failed "
7122                                         "status x%x add_status x%x mbx "
7123                                         "status x%x\n", shdr_status,
7124                                         shdr_add_status, rc);
7125                         break;
7126                 }
7127         }
7128
7129         if (rc != MBX_TIMEOUT)
7130                 mempool_free(mboxq, phba->mbox_mem_pool);
7131
7132         return cmdsent;
7133 }
7134
7135 /**
7136  * lpfc_sli4_pci_mem_setup - Setup SLI4 HBA PCI memory space.
7137  * @phba: pointer to lpfc hba data structure.
7138  *
7139  * This routine is invoked to set up the PCI device memory space for device
7140  * with SLI-4 interface spec.
7141  *
7142  * Return codes
7143  *      0 - successful
7144  *      other values - error
7145  **/
7146 static int
7147 lpfc_sli4_pci_mem_setup(struct lpfc_hba *phba)
7148 {
7149         struct pci_dev *pdev;
7150         unsigned long bar0map_len, bar1map_len, bar2map_len;
7151         int error = -ENODEV;
7152         uint32_t if_type;
7153
7154         /* Obtain PCI device reference */
7155         if (!phba->pcidev)
7156                 return error;
7157         else
7158                 pdev = phba->pcidev;
7159
7160         /* Set the device DMA mask size */
7161         if (pci_set_dma_mask(pdev, DMA_BIT_MASK(64)) != 0
7162          || pci_set_consistent_dma_mask(pdev,DMA_BIT_MASK(64)) != 0) {
7163                 if (pci_set_dma_mask(pdev, DMA_BIT_MASK(32)) != 0
7164                  || pci_set_consistent_dma_mask(pdev,DMA_BIT_MASK(32)) != 0) {
7165                         return error;
7166                 }
7167         }
7168
7169         /*
7170          * The BARs and register set definitions and offset locations are
7171          * dependent on the if_type.
7172          */
7173         if (pci_read_config_dword(pdev, LPFC_SLI_INTF,
7174                                   &phba->sli4_hba.sli_intf.word0)) {
7175                 return error;
7176         }
7177
7178         /* There is no SLI3 failback for SLI4 devices. */
7179         if (bf_get(lpfc_sli_intf_valid, &phba->sli4_hba.sli_intf) !=
7180             LPFC_SLI_INTF_VALID) {
7181                 lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
7182                                 "2894 SLI_INTF reg contents invalid "
7183                                 "sli_intf reg 0x%x\n",
7184                                 phba->sli4_hba.sli_intf.word0);
7185                 return error;
7186         }
7187
7188         if_type = bf_get(lpfc_sli_intf_if_type, &phba->sli4_hba.sli_intf);
7189         /*
7190          * Get the bus address of SLI4 device Bar regions and the
7191          * number of bytes required by each mapping. The mapping of the
7192          * particular PCI BARs regions is dependent on the type of
7193          * SLI4 device.
7194          */
7195         if (pci_resource_start(pdev, 0)) {
7196                 phba->pci_bar0_map = pci_resource_start(pdev, 0);
7197                 bar0map_len = pci_resource_len(pdev, 0);
7198
7199                 /*
7200                  * Map SLI4 PCI Config Space Register base to a kernel virtual
7201                  * addr
7202                  */
7203                 phba->sli4_hba.conf_regs_memmap_p =
7204                         ioremap(phba->pci_bar0_map, bar0map_len);
7205                 if (!phba->sli4_hba.conf_regs_memmap_p) {
7206                         dev_printk(KERN_ERR, &pdev->dev,
7207                                    "ioremap failed for SLI4 PCI config "
7208                                    "registers.\n");
7209                         goto out;
7210                 }
7211                 /* Set up BAR0 PCI config space register memory map */
7212                 lpfc_sli4_bar0_register_memmap(phba, if_type);
7213         } else {
7214                 phba->pci_bar0_map = pci_resource_start(pdev, 1);
7215                 bar0map_len = pci_resource_len(pdev, 1);
7216                 if (if_type == LPFC_SLI_INTF_IF_TYPE_2) {
7217                         dev_printk(KERN_ERR, &pdev->dev,
7218                            "FATAL - No BAR0 mapping for SLI4, if_type 2\n");
7219                         goto out;
7220                 }
7221                 phba->sli4_hba.conf_regs_memmap_p =
7222                                 ioremap(phba->pci_bar0_map, bar0map_len);
7223                 if (!phba->sli4_hba.conf_regs_memmap_p) {
7224                         dev_printk(KERN_ERR, &pdev->dev,
7225                                 "ioremap failed for SLI4 PCI config "
7226                                 "registers.\n");
7227                                 goto out;
7228                 }
7229                 lpfc_sli4_bar0_register_memmap(phba, if_type);
7230         }
7231
7232         if ((if_type == LPFC_SLI_INTF_IF_TYPE_0) &&
7233             (pci_resource_start(pdev, 2))) {
7234                 /*
7235                  * Map SLI4 if type 0 HBA Control Register base to a kernel
7236                  * virtual address and setup the registers.
7237                  */
7238                 phba->pci_bar1_map = pci_resource_start(pdev, 2);
7239                 bar1map_len = pci_resource_len(pdev, 2);
7240                 phba->sli4_hba.ctrl_regs_memmap_p =
7241                                 ioremap(phba->pci_bar1_map, bar1map_len);
7242                 if (!phba->sli4_hba.ctrl_regs_memmap_p) {
7243                         dev_printk(KERN_ERR, &pdev->dev,
7244                            "ioremap failed for SLI4 HBA control registers.\n");
7245                         goto out_iounmap_conf;
7246                 }
7247                 lpfc_sli4_bar1_register_memmap(phba);
7248         }
7249
7250         if ((if_type == LPFC_SLI_INTF_IF_TYPE_0) &&
7251             (pci_resource_start(pdev, 4))) {
7252                 /*
7253                  * Map SLI4 if type 0 HBA Doorbell Register base to a kernel
7254                  * virtual address and setup the registers.
7255                  */
7256                 phba->pci_bar2_map = pci_resource_start(pdev, 4);
7257                 bar2map_len = pci_resource_len(pdev, 4);
7258                 phba->sli4_hba.drbl_regs_memmap_p =
7259                                 ioremap(phba->pci_bar2_map, bar2map_len);
7260                 if (!phba->sli4_hba.drbl_regs_memmap_p) {
7261                         dev_printk(KERN_ERR, &pdev->dev,
7262                            "ioremap failed for SLI4 HBA doorbell registers.\n");
7263                         goto out_iounmap_ctrl;
7264                 }
7265                 error = lpfc_sli4_bar2_register_memmap(phba, LPFC_VF0);
7266                 if (error)
7267                         goto out_iounmap_all;
7268         }
7269
7270         return 0;
7271
7272 out_iounmap_all:
7273         iounmap(phba->sli4_hba.drbl_regs_memmap_p);
7274 out_iounmap_ctrl:
7275         iounmap(phba->sli4_hba.ctrl_regs_memmap_p);
7276 out_iounmap_conf:
7277         iounmap(phba->sli4_hba.conf_regs_memmap_p);
7278 out:
7279         return error;
7280 }
7281
7282 /**
7283  * lpfc_sli4_pci_mem_unset - Unset SLI4 HBA PCI memory space.
7284  * @phba: pointer to lpfc hba data structure.
7285  *
7286  * This routine is invoked to unset the PCI device memory space for device
7287  * with SLI-4 interface spec.
7288  **/
7289 static void
7290 lpfc_sli4_pci_mem_unset(struct lpfc_hba *phba)
7291 {
7292         struct pci_dev *pdev;
7293
7294         /* Obtain PCI device reference */
7295         if (!phba->pcidev)
7296                 return;
7297         else
7298                 pdev = phba->pcidev;
7299
7300         /* Free coherent DMA memory allocated */
7301
7302         /* Unmap I/O memory space */
7303         iounmap(phba->sli4_hba.drbl_regs_memmap_p);
7304         iounmap(phba->sli4_hba.ctrl_regs_memmap_p);
7305         iounmap(phba->sli4_hba.conf_regs_memmap_p);
7306
7307         return;
7308 }
7309
7310 /**
7311  * lpfc_sli_enable_msix - Enable MSI-X interrupt mode on SLI-3 device
7312  * @phba: pointer to lpfc hba data structure.
7313  *
7314  * This routine is invoked to enable the MSI-X interrupt vectors to device
7315  * with SLI-3 interface specs. The kernel function pci_enable_msix() is
7316  * called to enable the MSI-X vectors. Note that pci_enable_msix(), once
7317  * invoked, enables either all or nothing, depending on the current
7318  * availability of PCI vector resources. The device driver is responsible
7319  * for calling the individual request_irq() to register each MSI-X vector
7320  * with a interrupt handler, which is done in this function. Note that
7321  * later when device is unloading, the driver should always call free_irq()
7322  * on all MSI-X vectors it has done request_irq() on before calling
7323  * pci_disable_msix(). Failure to do so results in a BUG_ON() and a device
7324  * will be left with MSI-X enabled and leaks its vectors.
7325  *
7326  * Return codes
7327  *   0 - successful
7328  *   other values - error
7329  **/
7330 static int
7331 lpfc_sli_enable_msix(struct lpfc_hba *phba)
7332 {
7333         int rc, i;
7334         LPFC_MBOXQ_t *pmb;
7335
7336         /* Set up MSI-X multi-message vectors */
7337         for (i = 0; i < LPFC_MSIX_VECTORS; i++)
7338                 phba->msix_entries[i].entry = i;
7339
7340         /* Configure MSI-X capability structure */
7341         rc = pci_enable_msix(phba->pcidev, phba->msix_entries,
7342                                 ARRAY_SIZE(phba->msix_entries));
7343         if (rc) {
7344                 lpfc_printf_log(phba, KERN_INFO, LOG_INIT,
7345                                 "0420 PCI enable MSI-X failed (%d)\n", rc);
7346                 goto msi_fail_out;
7347         }
7348         for (i = 0; i < LPFC_MSIX_VECTORS; i++)
7349                 lpfc_printf_log(phba, KERN_INFO, LOG_INIT,
7350                                 "0477 MSI-X entry[%d]: vector=x%x "
7351                                 "message=%d\n", i,
7352                                 phba->msix_entries[i].vector,
7353                                 phba->msix_entries[i].entry);
7354         /*
7355          * Assign MSI-X vectors to interrupt handlers
7356          */
7357
7358         /* vector-0 is associated to slow-path handler */
7359         rc = request_irq(phba->msix_entries[0].vector,
7360                          &lpfc_sli_sp_intr_handler, IRQF_SHARED,
7361                          LPFC_SP_DRIVER_HANDLER_NAME, phba);
7362         if (rc) {
7363                 lpfc_printf_log(phba, KERN_WARNING, LOG_INIT,
7364                                 "0421 MSI-X slow-path request_irq failed "
7365                                 "(%d)\n", rc);
7366                 goto msi_fail_out;
7367         }
7368
7369         /* vector-1 is associated to fast-path handler */
7370         rc = request_irq(phba->msix_entries[1].vector,
7371                          &lpfc_sli_fp_intr_handler, IRQF_SHARED,
7372                          LPFC_FP_DRIVER_HANDLER_NAME, phba);
7373
7374         if (rc) {
7375                 lpfc_printf_log(phba, KERN_WARNING, LOG_INIT,
7376                                 "0429 MSI-X fast-path request_irq failed "
7377                                 "(%d)\n", rc);
7378                 goto irq_fail_out;
7379         }
7380
7381         /*
7382          * Configure HBA MSI-X attention conditions to messages
7383          */
7384         pmb = (LPFC_MBOXQ_t *) mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
7385
7386         if (!pmb) {
7387                 rc = -ENOMEM;
7388                 lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
7389                                 "0474 Unable to allocate memory for issuing "
7390                                 "MBOX_CONFIG_MSI command\n");
7391                 goto mem_fail_out;
7392         }
7393         rc = lpfc_config_msi(phba, pmb);
7394         if (rc)
7395                 goto mbx_fail_out;
7396         rc = lpfc_sli_issue_mbox(phba, pmb, MBX_POLL);
7397         if (rc != MBX_SUCCESS) {
7398                 lpfc_printf_log(phba, KERN_WARNING, LOG_MBOX,
7399                                 "0351 Config MSI mailbox command failed, "
7400                                 "mbxCmd x%x, mbxStatus x%x\n",
7401                                 pmb->u.mb.mbxCommand, pmb->u.mb.mbxStatus);
7402                 goto mbx_fail_out;
7403         }
7404
7405         /* Free memory allocated for mailbox command */
7406         mempool_free(pmb, phba->mbox_mem_pool);
7407         return rc;
7408
7409 mbx_fail_out:
7410         /* Free memory allocated for mailbox command */
7411         mempool_free(pmb, phba->mbox_mem_pool);
7412
7413 mem_fail_out:
7414         /* free the irq already requested */
7415         free_irq(phba->msix_entries[1].vector, phba);
7416
7417 irq_fail_out:
7418         /* free the irq already requested */
7419         free_irq(phba->msix_entries[0].vector, phba);
7420
7421 msi_fail_out:
7422         /* Unconfigure MSI-X capability structure */
7423         pci_disable_msix(phba->pcidev);
7424         return rc;
7425 }
7426
7427 /**
7428  * lpfc_sli_disable_msix - Disable MSI-X interrupt mode on SLI-3 device.
7429  * @phba: pointer to lpfc hba data structure.
7430  *
7431  * This routine is invoked to release the MSI-X vectors and then disable the
7432  * MSI-X interrupt mode to device with SLI-3 interface spec.
7433  **/
7434 static void
7435 lpfc_sli_disable_msix(struct lpfc_hba *phba)
7436 {
7437         int i;
7438
7439         /* Free up MSI-X multi-message vectors */
7440         for (i = 0; i < LPFC_MSIX_VECTORS; i++)
7441                 free_irq(phba->msix_entries[i].vector, phba);
7442         /* Disable MSI-X */
7443         pci_disable_msix(phba->pcidev);
7444
7445         return;
7446 }
7447
7448 /**
7449  * lpfc_sli_enable_msi - Enable MSI interrupt mode on SLI-3 device.
7450  * @phba: pointer to lpfc hba data structure.
7451  *
7452  * This routine is invoked to enable the MSI interrupt mode to device with
7453  * SLI-3 interface spec. The kernel function pci_enable_msi() is called to
7454  * enable the MSI vector. The device driver is responsible for calling the
7455  * request_irq() to register MSI vector with a interrupt the handler, which
7456  * is done in this function.
7457  *
7458  * Return codes
7459  *      0 - successful
7460  *      other values - error
7461  */
7462 static int
7463 lpfc_sli_enable_msi(struct lpfc_hba *phba)
7464 {
7465         int rc;
7466
7467         rc = pci_enable_msi(phba->pcidev);
7468         if (!rc)
7469                 lpfc_printf_log(phba, KERN_INFO, LOG_INIT,
7470                                 "0462 PCI enable MSI mode success.\n");
7471         else {
7472                 lpfc_printf_log(phba, KERN_INFO, LOG_INIT,
7473                                 "0471 PCI enable MSI mode failed (%d)\n", rc);
7474                 return rc;
7475         }
7476
7477         rc = request_irq(phba->pcidev->irq, lpfc_sli_intr_handler,
7478                          IRQF_SHARED, LPFC_DRIVER_NAME, phba);
7479         if (rc) {
7480                 pci_disable_msi(phba->pcidev);
7481                 lpfc_printf_log(phba, KERN_WARNING, LOG_INIT,
7482                                 "0478 MSI request_irq failed (%d)\n", rc);
7483         }
7484         return rc;
7485 }
7486
7487 /**
7488  * lpfc_sli_disable_msi - Disable MSI interrupt mode to SLI-3 device.
7489  * @phba: pointer to lpfc hba data structure.
7490  *
7491  * This routine is invoked to disable the MSI interrupt mode to device with
7492  * SLI-3 interface spec. The driver calls free_irq() on MSI vector it has
7493  * done request_irq() on before calling pci_disable_msi(). Failure to do so
7494  * results in a BUG_ON() and a device will be left with MSI enabled and leaks
7495  * its vector.
7496  */
7497 static void
7498 lpfc_sli_disable_msi(struct lpfc_hba *phba)
7499 {
7500         free_irq(phba->pcidev->irq, phba);
7501         pci_disable_msi(phba->pcidev);
7502         return;
7503 }
7504
7505 /**
7506  * lpfc_sli_enable_intr - Enable device interrupt to SLI-3 device.
7507  * @phba: pointer to lpfc hba data structure.
7508  *
7509  * This routine is invoked to enable device interrupt and associate driver's
7510  * interrupt handler(s) to interrupt vector(s) to device with SLI-3 interface
7511  * spec. Depends on the interrupt mode configured to the driver, the driver
7512  * will try to fallback from the configured interrupt mode to an interrupt
7513  * mode which is supported by the platform, kernel, and device in the order
7514  * of:
7515  * MSI-X -> MSI -> IRQ.
7516  *
7517  * Return codes
7518  *   0 - successful
7519  *   other values - error
7520  **/
7521 static uint32_t
7522 lpfc_sli_enable_intr(struct lpfc_hba *phba, uint32_t cfg_mode)
7523 {
7524         uint32_t intr_mode = LPFC_INTR_ERROR;
7525         int retval;
7526
7527         if (cfg_mode == 2) {
7528                 /* Need to issue conf_port mbox cmd before conf_msi mbox cmd */
7529                 retval = lpfc_sli_config_port(phba, LPFC_SLI_REV3);
7530                 if (!retval) {
7531                         /* Now, try to enable MSI-X interrupt mode */
7532                         retval = lpfc_sli_enable_msix(phba);
7533                         if (!retval) {
7534                                 /* Indicate initialization to MSI-X mode */
7535                                 phba->intr_type = MSIX;
7536                                 intr_mode = 2;
7537                         }
7538                 }
7539         }
7540
7541         /* Fallback to MSI if MSI-X initialization failed */
7542         if (cfg_mode >= 1 && phba->intr_type == NONE) {
7543                 retval = lpfc_sli_enable_msi(phba);
7544                 if (!retval) {
7545                         /* Indicate initialization to MSI mode */
7546                         phba->intr_type = MSI;
7547                         intr_mode = 1;
7548                 }
7549         }
7550
7551         /* Fallback to INTx if both MSI-X/MSI initalization failed */
7552         if (phba->intr_type == NONE) {
7553                 retval = request_irq(phba->pcidev->irq, lpfc_sli_intr_handler,
7554                                      IRQF_SHARED, LPFC_DRIVER_NAME, phba);
7555                 if (!retval) {
7556                         /* Indicate initialization to INTx mode */
7557                         phba->intr_type = INTx;
7558                         intr_mode = 0;
7559                 }
7560         }
7561         return intr_mode;
7562 }
7563
7564 /**
7565  * lpfc_sli_disable_intr - Disable device interrupt to SLI-3 device.
7566  * @phba: pointer to lpfc hba data structure.
7567  *
7568  * This routine is invoked to disable device interrupt and disassociate the
7569  * driver's interrupt handler(s) from interrupt vector(s) to device with
7570  * SLI-3 interface spec. Depending on the interrupt mode, the driver will
7571  * release the interrupt vector(s) for the message signaled interrupt.
7572  **/
7573 static void
7574 lpfc_sli_disable_intr(struct lpfc_hba *phba)
7575 {
7576         /* Disable the currently initialized interrupt mode */
7577         if (phba->intr_type == MSIX)
7578                 lpfc_sli_disable_msix(phba);
7579         else if (phba->intr_type == MSI)
7580                 lpfc_sli_disable_msi(phba);
7581         else if (phba->intr_type == INTx)
7582                 free_irq(phba->pcidev->irq, phba);
7583
7584         /* Reset interrupt management states */
7585         phba->intr_type = NONE;
7586         phba->sli.slistat.sli_intr = 0;
7587
7588         return;
7589 }
7590
7591 /**
7592  * lpfc_sli4_enable_msix - Enable MSI-X interrupt mode to SLI-4 device
7593  * @phba: pointer to lpfc hba data structure.
7594  *
7595  * This routine is invoked to enable the MSI-X interrupt vectors to device
7596  * with SLI-4 interface spec. The kernel function pci_enable_msix() is called
7597  * to enable the MSI-X vectors. Note that pci_enable_msix(), once invoked,
7598  * enables either all or nothing, depending on the current availability of
7599  * PCI vector resources. The device driver is responsible for calling the
7600  * individual request_irq() to register each MSI-X vector with a interrupt
7601  * handler, which is done in this function. Note that later when device is
7602  * unloading, the driver should always call free_irq() on all MSI-X vectors
7603  * it has done request_irq() on before calling pci_disable_msix(). Failure
7604  * to do so results in a BUG_ON() and a device will be left with MSI-X
7605  * enabled and leaks its vectors.
7606  *
7607  * Return codes
7608  * 0 - successful
7609  * other values - error
7610  **/
7611 static int
7612 lpfc_sli4_enable_msix(struct lpfc_hba *phba)
7613 {
7614         int vectors, rc, index;
7615
7616         /* Set up MSI-X multi-message vectors */
7617         for (index = 0; index < phba->sli4_hba.cfg_eqn; index++)
7618                 phba->sli4_hba.msix_entries[index].entry = index;
7619
7620         /* Configure MSI-X capability structure */
7621         vectors = phba->sli4_hba.cfg_eqn;
7622 enable_msix_vectors:
7623         rc = pci_enable_msix(phba->pcidev, phba->sli4_hba.msix_entries,
7624                              vectors);
7625         if (rc > 1) {
7626                 vectors = rc;
7627                 goto enable_msix_vectors;
7628         } else if (rc) {
7629                 lpfc_printf_log(phba, KERN_INFO, LOG_INIT,
7630                                 "0484 PCI enable MSI-X failed (%d)\n", rc);
7631                 goto msi_fail_out;
7632         }
7633
7634         /* Log MSI-X vector assignment */
7635         for (index = 0; index < vectors; index++)
7636                 lpfc_printf_log(phba, KERN_INFO, LOG_INIT,
7637                                 "0489 MSI-X entry[%d]: vector=x%x "
7638                                 "message=%d\n", index,
7639                                 phba->sli4_hba.msix_entries[index].vector,
7640                                 phba->sli4_hba.msix_entries[index].entry);
7641         /*
7642          * Assign MSI-X vectors to interrupt handlers
7643          */
7644         if (vectors > 1)
7645                 rc = request_irq(phba->sli4_hba.msix_entries[0].vector,
7646                                  &lpfc_sli4_sp_intr_handler, IRQF_SHARED,
7647                                  LPFC_SP_DRIVER_HANDLER_NAME, phba);
7648         else
7649                 /* All Interrupts need to be handled by one EQ */
7650                 rc = request_irq(phba->sli4_hba.msix_entries[0].vector,
7651                                  &lpfc_sli4_intr_handler, IRQF_SHARED,
7652                                  LPFC_DRIVER_NAME, phba);
7653         if (rc) {
7654                 lpfc_printf_log(phba, KERN_WARNING, LOG_INIT,
7655                                 "0485 MSI-X slow-path request_irq failed "
7656                                 "(%d)\n", rc);
7657                 goto msi_fail_out;
7658         }
7659
7660         /* The rest of the vector(s) are associated to fast-path handler(s) */
7661         for (index = 1; index < vectors; index++) {
7662                 phba->sli4_hba.fcp_eq_hdl[index - 1].idx = index - 1;
7663                 phba->sli4_hba.fcp_eq_hdl[index - 1].phba = phba;
7664                 rc = request_irq(phba->sli4_hba.msix_entries[index].vector,
7665                                  &lpfc_sli4_fp_intr_handler, IRQF_SHARED,
7666                                  LPFC_FP_DRIVER_HANDLER_NAME,
7667                                  &phba->sli4_hba.fcp_eq_hdl[index - 1]);
7668                 if (rc) {
7669                         lpfc_printf_log(phba, KERN_WARNING, LOG_INIT,
7670                                         "0486 MSI-X fast-path (%d) "
7671                                         "request_irq failed (%d)\n", index, rc);
7672                         goto cfg_fail_out;
7673                 }
7674         }
7675         phba->sli4_hba.msix_vec_nr = vectors;
7676
7677         return rc;
7678
7679 cfg_fail_out:
7680         /* free the irq already requested */
7681         for (--index; index >= 1; index--)
7682                 free_irq(phba->sli4_hba.msix_entries[index - 1].vector,
7683                          &phba->sli4_hba.fcp_eq_hdl[index - 1]);
7684
7685         /* free the irq already requested */
7686         free_irq(phba->sli4_hba.msix_entries[0].vector, phba);
7687
7688 msi_fail_out:
7689         /* Unconfigure MSI-X capability structure */
7690         pci_disable_msix(phba->pcidev);
7691         return rc;
7692 }
7693
7694 /**
7695  * lpfc_sli4_disable_msix - Disable MSI-X interrupt mode to SLI-4 device
7696  * @phba: pointer to lpfc hba data structure.
7697  *
7698  * This routine is invoked to release the MSI-X vectors and then disable the
7699  * MSI-X interrupt mode to device with SLI-4 interface spec.
7700  **/
7701 static void
7702 lpfc_sli4_disable_msix(struct lpfc_hba *phba)
7703 {
7704         int index;
7705
7706         /* Free up MSI-X multi-message vectors */
7707         free_irq(phba->sli4_hba.msix_entries[0].vector, phba);
7708
7709         for (index = 1; index < phba->sli4_hba.msix_vec_nr; index++)
7710                 free_irq(phba->sli4_hba.msix_entries[index].vector,
7711                          &phba->sli4_hba.fcp_eq_hdl[index - 1]);
7712
7713         /* Disable MSI-X */
7714         pci_disable_msix(phba->pcidev);
7715
7716         return;
7717 }
7718
7719 /**
7720  * lpfc_sli4_enable_msi - Enable MSI interrupt mode to SLI-4 device
7721  * @phba: pointer to lpfc hba data structure.
7722  *
7723  * This routine is invoked to enable the MSI interrupt mode to device with
7724  * SLI-4 interface spec. The kernel function pci_enable_msi() is called
7725  * to enable the MSI vector. The device driver is responsible for calling
7726  * the request_irq() to register MSI vector with a interrupt the handler,
7727  * which is done in this function.
7728  *
7729  * Return codes
7730  *      0 - successful
7731  *      other values - error
7732  **/
7733 static int
7734 lpfc_sli4_enable_msi(struct lpfc_hba *phba)
7735 {
7736         int rc, index;
7737
7738         rc = pci_enable_msi(phba->pcidev);
7739         if (!rc)
7740                 lpfc_printf_log(phba, KERN_INFO, LOG_INIT,
7741                                 "0487 PCI enable MSI mode success.\n");
7742         else {
7743                 lpfc_printf_log(phba, KERN_INFO, LOG_INIT,
7744                                 "0488 PCI enable MSI mode failed (%d)\n", rc);
7745                 return rc;
7746         }
7747
7748         rc = request_irq(phba->pcidev->irq, lpfc_sli4_intr_handler,
7749                          IRQF_SHARED, LPFC_DRIVER_NAME, phba);
7750         if (rc) {
7751                 pci_disable_msi(phba->pcidev);
7752                 lpfc_printf_log(phba, KERN_WARNING, LOG_INIT,
7753                                 "0490 MSI request_irq failed (%d)\n", rc);
7754                 return rc;
7755         }
7756
7757         for (index = 0; index < phba->cfg_fcp_eq_count; index++) {
7758                 phba->sli4_hba.fcp_eq_hdl[index].idx = index;
7759                 phba->sli4_hba.fcp_eq_hdl[index].phba = phba;
7760         }
7761
7762         return 0;
7763 }
7764
7765 /**
7766  * lpfc_sli4_disable_msi - Disable MSI interrupt mode to SLI-4 device
7767  * @phba: pointer to lpfc hba data structure.
7768  *
7769  * This routine is invoked to disable the MSI interrupt mode to device with
7770  * SLI-4 interface spec. The driver calls free_irq() on MSI vector it has
7771  * done request_irq() on before calling pci_disable_msi(). Failure to do so
7772  * results in a BUG_ON() and a device will be left with MSI enabled and leaks
7773  * its vector.
7774  **/
7775 static void
7776 lpfc_sli4_disable_msi(struct lpfc_hba *phba)
7777 {
7778         free_irq(phba->pcidev->irq, phba);
7779         pci_disable_msi(phba->pcidev);
7780         return;
7781 }
7782
7783 /**
7784  * lpfc_sli4_enable_intr - Enable device interrupt to SLI-4 device
7785  * @phba: pointer to lpfc hba data structure.
7786  *
7787  * This routine is invoked to enable device interrupt and associate driver's
7788  * interrupt handler(s) to interrupt vector(s) to device with SLI-4
7789  * interface spec. Depends on the interrupt mode configured to the driver,
7790  * the driver will try to fallback from the configured interrupt mode to an
7791  * interrupt mode which is supported by the platform, kernel, and device in
7792  * the order of:
7793  * MSI-X -> MSI -> IRQ.
7794  *
7795  * Return codes
7796  *      0 - successful
7797  *      other values - error
7798  **/
7799 static uint32_t
7800 lpfc_sli4_enable_intr(struct lpfc_hba *phba, uint32_t cfg_mode)
7801 {
7802         uint32_t intr_mode = LPFC_INTR_ERROR;
7803         int retval, index;
7804
7805         if (cfg_mode == 2) {
7806                 /* Preparation before conf_msi mbox cmd */
7807                 retval = 0;
7808                 if (!retval) {
7809                         /* Now, try to enable MSI-X interrupt mode */
7810                         retval = lpfc_sli4_enable_msix(phba);
7811                         if (!retval) {
7812                                 /* Indicate initialization to MSI-X mode */
7813                                 phba->intr_type = MSIX;
7814                                 intr_mode = 2;
7815                         }
7816                 }
7817         }
7818
7819         /* Fallback to MSI if MSI-X initialization failed */
7820         if (cfg_mode >= 1 && phba->intr_type == NONE) {
7821                 retval = lpfc_sli4_enable_msi(phba);
7822                 if (!retval) {
7823                         /* Indicate initialization to MSI mode */
7824                         phba->intr_type = MSI;
7825                         intr_mode = 1;
7826                 }
7827         }
7828
7829         /* Fallback to INTx if both MSI-X/MSI initalization failed */
7830         if (phba->intr_type == NONE) {
7831                 retval = request_irq(phba->pcidev->irq, lpfc_sli4_intr_handler,
7832                                      IRQF_SHARED, LPFC_DRIVER_NAME, phba);
7833                 if (!retval) {
7834                         /* Indicate initialization to INTx mode */
7835                         phba->intr_type = INTx;
7836                         intr_mode = 0;
7837                         for (index = 0; index < phba->cfg_fcp_eq_count;
7838                              index++) {
7839                                 phba->sli4_hba.fcp_eq_hdl[index].idx = index;
7840                                 phba->sli4_hba.fcp_eq_hdl[index].phba = phba;
7841                         }
7842                 }
7843         }
7844         return intr_mode;
7845 }
7846
7847 /**
7848  * lpfc_sli4_disable_intr - Disable device interrupt to SLI-4 device
7849  * @phba: pointer to lpfc hba data structure.
7850  *
7851  * This routine is invoked to disable device interrupt and disassociate
7852  * the driver's interrupt handler(s) from interrupt vector(s) to device
7853  * with SLI-4 interface spec. Depending on the interrupt mode, the driver
7854  * will release the interrupt vector(s) for the message signaled interrupt.
7855  **/
7856 static void
7857 lpfc_sli4_disable_intr(struct lpfc_hba *phba)
7858 {
7859         /* Disable the currently initialized interrupt mode */
7860         if (phba->intr_type == MSIX)
7861                 lpfc_sli4_disable_msix(phba);
7862         else if (phba->intr_type == MSI)
7863                 lpfc_sli4_disable_msi(phba);
7864         else if (phba->intr_type == INTx)
7865                 free_irq(phba->pcidev->irq, phba);
7866
7867         /* Reset interrupt management states */
7868         phba->intr_type = NONE;
7869         phba->sli.slistat.sli_intr = 0;
7870
7871         return;
7872 }
7873
7874 /**
7875  * lpfc_unset_hba - Unset SLI3 hba device initialization
7876  * @phba: pointer to lpfc hba data structure.
7877  *
7878  * This routine is invoked to unset the HBA device initialization steps to
7879  * a device with SLI-3 interface spec.
7880  **/
7881 static void
7882 lpfc_unset_hba(struct lpfc_hba *phba)
7883 {
7884         struct lpfc_vport *vport = phba->pport;
7885         struct Scsi_Host  *shost = lpfc_shost_from_vport(vport);
7886
7887         spin_lock_irq(shost->host_lock);
7888         vport->load_flag |= FC_UNLOADING;
7889         spin_unlock_irq(shost->host_lock);
7890
7891         lpfc_stop_hba_timers(phba);
7892
7893         phba->pport->work_port_events = 0;
7894
7895         lpfc_sli_hba_down(phba);
7896
7897         lpfc_sli_brdrestart(phba);
7898
7899         lpfc_sli_disable_intr(phba);
7900
7901         return;
7902 }
7903
7904 /**
7905  * lpfc_sli4_unset_hba - Unset SLI4 hba device initialization.
7906  * @phba: pointer to lpfc hba data structure.
7907  *
7908  * This routine is invoked to unset the HBA device initialization steps to
7909  * a device with SLI-4 interface spec.
7910  **/
7911 static void
7912 lpfc_sli4_unset_hba(struct lpfc_hba *phba)
7913 {
7914         struct lpfc_vport *vport = phba->pport;
7915         struct Scsi_Host  *shost = lpfc_shost_from_vport(vport);
7916
7917         spin_lock_irq(shost->host_lock);
7918         vport->load_flag |= FC_UNLOADING;
7919         spin_unlock_irq(shost->host_lock);
7920
7921         phba->pport->work_port_events = 0;
7922
7923         /* Stop the SLI4 device port */
7924         lpfc_stop_port(phba);
7925
7926         lpfc_sli4_disable_intr(phba);
7927
7928         /* Reset SLI4 HBA FCoE function */
7929         lpfc_pci_function_reset(phba);
7930
7931         return;
7932 }
7933
7934 /**
7935  * lpfc_sli4_xri_exchange_busy_wait - Wait for device XRI exchange busy
7936  * @phba: Pointer to HBA context object.
7937  *
7938  * This function is called in the SLI4 code path to wait for completion
7939  * of device's XRIs exchange busy. It will check the XRI exchange busy
7940  * on outstanding FCP and ELS I/Os every 10ms for up to 10 seconds; after
7941  * that, it will check the XRI exchange busy on outstanding FCP and ELS
7942  * I/Os every 30 seconds, log error message, and wait forever. Only when
7943  * all XRI exchange busy complete, the driver unload shall proceed with
7944  * invoking the function reset ioctl mailbox command to the CNA and the
7945  * the rest of the driver unload resource release.
7946  **/
7947 static void
7948 lpfc_sli4_xri_exchange_busy_wait(struct lpfc_hba *phba)
7949 {
7950         int wait_time = 0;
7951         int fcp_xri_cmpl = list_empty(&phba->sli4_hba.lpfc_abts_scsi_buf_list);
7952         int els_xri_cmpl = list_empty(&phba->sli4_hba.lpfc_abts_els_sgl_list);
7953
7954         while (!fcp_xri_cmpl || !els_xri_cmpl) {
7955                 if (wait_time > LPFC_XRI_EXCH_BUSY_WAIT_TMO) {
7956                         if (!fcp_xri_cmpl)
7957                                 lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
7958                                                 "2877 FCP XRI exchange busy "
7959                                                 "wait time: %d seconds.\n",
7960                                                 wait_time/1000);
7961                         if (!els_xri_cmpl)
7962                                 lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
7963                                                 "2878 ELS XRI exchange busy "
7964                                                 "wait time: %d seconds.\n",
7965                                                 wait_time/1000);
7966                         msleep(LPFC_XRI_EXCH_BUSY_WAIT_T2);
7967                         wait_time += LPFC_XRI_EXCH_BUSY_WAIT_T2;
7968                 } else {
7969                         msleep(LPFC_XRI_EXCH_BUSY_WAIT_T1);
7970                         wait_time += LPFC_XRI_EXCH_BUSY_WAIT_T1;
7971                 }
7972                 fcp_xri_cmpl =
7973                         list_empty(&phba->sli4_hba.lpfc_abts_scsi_buf_list);
7974                 els_xri_cmpl =
7975                         list_empty(&phba->sli4_hba.lpfc_abts_els_sgl_list);
7976         }
7977 }
7978
7979 /**
7980  * lpfc_sli4_hba_unset - Unset the fcoe hba
7981  * @phba: Pointer to HBA context object.
7982  *
7983  * This function is called in the SLI4 code path to reset the HBA's FCoE
7984  * function. The caller is not required to hold any lock. This routine
7985  * issues PCI function reset mailbox command to reset the FCoE function.
7986  * At the end of the function, it calls lpfc_hba_down_post function to
7987  * free any pending commands.
7988  **/
7989 static void
7990 lpfc_sli4_hba_unset(struct lpfc_hba *phba)
7991 {
7992         int wait_cnt = 0;
7993         LPFC_MBOXQ_t *mboxq;
7994         struct pci_dev *pdev = phba->pcidev;
7995
7996         lpfc_stop_hba_timers(phba);
7997         phba->sli4_hba.intr_enable = 0;
7998
7999         /*
8000          * Gracefully wait out the potential current outstanding asynchronous
8001          * mailbox command.
8002          */
8003
8004         /* First, block any pending async mailbox command from posted */
8005         spin_lock_irq(&phba->hbalock);
8006         phba->sli.sli_flag |= LPFC_SLI_ASYNC_MBX_BLK;
8007         spin_unlock_irq(&phba->hbalock);
8008         /* Now, trying to wait it out if we can */
8009         while (phba->sli.sli_flag & LPFC_SLI_MBOX_ACTIVE) {
8010                 msleep(10);
8011                 if (++wait_cnt > LPFC_ACTIVE_MBOX_WAIT_CNT)
8012                         break;
8013         }
8014         /* Forcefully release the outstanding mailbox command if timed out */
8015         if (phba->sli.sli_flag & LPFC_SLI_MBOX_ACTIVE) {
8016                 spin_lock_irq(&phba->hbalock);
8017                 mboxq = phba->sli.mbox_active;
8018                 mboxq->u.mb.mbxStatus = MBX_NOT_FINISHED;
8019                 __lpfc_mbox_cmpl_put(phba, mboxq);
8020                 phba->sli.sli_flag &= ~LPFC_SLI_MBOX_ACTIVE;
8021                 phba->sli.mbox_active = NULL;
8022                 spin_unlock_irq(&phba->hbalock);
8023         }
8024
8025         /* Abort all iocbs associated with the hba */
8026         lpfc_sli_hba_iocb_abort(phba);
8027
8028         /* Wait for completion of device XRI exchange busy */
8029         lpfc_sli4_xri_exchange_busy_wait(phba);
8030
8031         /* Disable PCI subsystem interrupt */
8032         lpfc_sli4_disable_intr(phba);
8033
8034         /* Disable SR-IOV if enabled */
8035         if (phba->cfg_sriov_nr_virtfn)
8036                 pci_disable_sriov(pdev);
8037
8038         /* Stop kthread signal shall trigger work_done one more time */
8039         kthread_stop(phba->worker_thread);
8040
8041         /* Reset SLI4 HBA FCoE function */
8042         lpfc_pci_function_reset(phba);
8043
8044         /* Stop the SLI4 device port */
8045         phba->pport->work_port_events = 0;
8046 }
8047
8048  /**
8049  * lpfc_pc_sli4_params_get - Get the SLI4_PARAMS port capabilities.
8050  * @phba: Pointer to HBA context object.
8051  * @mboxq: Pointer to the mailboxq memory for the mailbox command response.
8052  *
8053  * This function is called in the SLI4 code path to read the port's
8054  * sli4 capabilities.
8055  *
8056  * This function may be be called from any context that can block-wait
8057  * for the completion.  The expectation is that this routine is called
8058  * typically from probe_one or from the online routine.
8059  **/
8060 int
8061 lpfc_pc_sli4_params_get(struct lpfc_hba *phba, LPFC_MBOXQ_t *mboxq)
8062 {
8063         int rc;
8064         struct lpfc_mqe *mqe;
8065         struct lpfc_pc_sli4_params *sli4_params;
8066         uint32_t mbox_tmo;
8067
8068         rc = 0;
8069         mqe = &mboxq->u.mqe;
8070
8071         /* Read the port's SLI4 Parameters port capabilities */
8072         lpfc_pc_sli4_params(mboxq);
8073         if (!phba->sli4_hba.intr_enable)
8074                 rc = lpfc_sli_issue_mbox(phba, mboxq, MBX_POLL);
8075         else {
8076                 mbox_tmo = lpfc_mbox_tmo_val(phba, MBX_PORT_CAPABILITIES);
8077                 rc = lpfc_sli_issue_mbox_wait(phba, mboxq, mbox_tmo);
8078         }
8079
8080         if (unlikely(rc))
8081                 return 1;
8082
8083         sli4_params = &phba->sli4_hba.pc_sli4_params;
8084         sli4_params->if_type = bf_get(if_type, &mqe->un.sli4_params);
8085         sli4_params->sli_rev = bf_get(sli_rev, &mqe->un.sli4_params);
8086         sli4_params->sli_family = bf_get(sli_family, &mqe->un.sli4_params);
8087         sli4_params->featurelevel_1 = bf_get(featurelevel_1,
8088                                              &mqe->un.sli4_params);
8089         sli4_params->featurelevel_2 = bf_get(featurelevel_2,
8090                                              &mqe->un.sli4_params);
8091         sli4_params->proto_types = mqe->un.sli4_params.word3;
8092         sli4_params->sge_supp_len = mqe->un.sli4_params.sge_supp_len;
8093         sli4_params->if_page_sz = bf_get(if_page_sz, &mqe->un.sli4_params);
8094         sli4_params->rq_db_window = bf_get(rq_db_window, &mqe->un.sli4_params);
8095         sli4_params->loopbk_scope = bf_get(loopbk_scope, &mqe->un.sli4_params);
8096         sli4_params->eq_pages_max = bf_get(eq_pages, &mqe->un.sli4_params);
8097         sli4_params->eqe_size = bf_get(eqe_size, &mqe->un.sli4_params);
8098         sli4_params->cq_pages_max = bf_get(cq_pages, &mqe->un.sli4_params);
8099         sli4_params->cqe_size = bf_get(cqe_size, &mqe->un.sli4_params);
8100         sli4_params->mq_pages_max = bf_get(mq_pages, &mqe->un.sli4_params);
8101         sli4_params->mqe_size = bf_get(mqe_size, &mqe->un.sli4_params);
8102         sli4_params->mq_elem_cnt = bf_get(mq_elem_cnt, &mqe->un.sli4_params);
8103         sli4_params->wq_pages_max = bf_get(wq_pages, &mqe->un.sli4_params);
8104         sli4_params->wqe_size = bf_get(wqe_size, &mqe->un.sli4_params);
8105         sli4_params->rq_pages_max = bf_get(rq_pages, &mqe->un.sli4_params);
8106         sli4_params->rqe_size = bf_get(rqe_size, &mqe->un.sli4_params);
8107         sli4_params->hdr_pages_max = bf_get(hdr_pages, &mqe->un.sli4_params);
8108         sli4_params->hdr_size = bf_get(hdr_size, &mqe->un.sli4_params);
8109         sli4_params->hdr_pp_align = bf_get(hdr_pp_align, &mqe->un.sli4_params);
8110         sli4_params->sgl_pages_max = bf_get(sgl_pages, &mqe->un.sli4_params);
8111         sli4_params->sgl_pp_align = bf_get(sgl_pp_align, &mqe->un.sli4_params);
8112
8113         /* Make sure that sge_supp_len can be handled by the driver */
8114         if (sli4_params->sge_supp_len > LPFC_MAX_SGE_SIZE)
8115                 sli4_params->sge_supp_len = LPFC_MAX_SGE_SIZE;
8116
8117         return rc;
8118 }
8119
8120 /**
8121  * lpfc_get_sli4_parameters - Get the SLI4 Config PARAMETERS.
8122  * @phba: Pointer to HBA context object.
8123  * @mboxq: Pointer to the mailboxq memory for the mailbox command response.
8124  *
8125  * This function is called in the SLI4 code path to read the port's
8126  * sli4 capabilities.
8127  *
8128  * This function may be be called from any context that can block-wait
8129  * for the completion.  The expectation is that this routine is called
8130  * typically from probe_one or from the online routine.
8131  **/
8132 int
8133 lpfc_get_sli4_parameters(struct lpfc_hba *phba, LPFC_MBOXQ_t *mboxq)
8134 {
8135         int rc;
8136         struct lpfc_mqe *mqe = &mboxq->u.mqe;
8137         struct lpfc_pc_sli4_params *sli4_params;
8138         int length;
8139         struct lpfc_sli4_parameters *mbx_sli4_parameters;
8140
8141         /*
8142          * By default, the driver assumes the SLI4 port requires RPI
8143          * header postings.  The SLI4_PARAM response will correct this
8144          * assumption.
8145          */
8146         phba->sli4_hba.rpi_hdrs_in_use = 1;
8147
8148         /* Read the port's SLI4 Config Parameters */
8149         length = (sizeof(struct lpfc_mbx_get_sli4_parameters) -
8150                   sizeof(struct lpfc_sli4_cfg_mhdr));
8151         lpfc_sli4_config(phba, mboxq, LPFC_MBOX_SUBSYSTEM_COMMON,
8152                          LPFC_MBOX_OPCODE_GET_SLI4_PARAMETERS,
8153                          length, LPFC_SLI4_MBX_EMBED);
8154         if (!phba->sli4_hba.intr_enable)
8155                 rc = lpfc_sli_issue_mbox(phba, mboxq, MBX_POLL);
8156         else
8157                 rc = lpfc_sli_issue_mbox_wait(phba, mboxq,
8158                         lpfc_mbox_tmo_val(phba, MBX_SLI4_CONFIG));
8159         if (unlikely(rc))
8160                 return rc;
8161         sli4_params = &phba->sli4_hba.pc_sli4_params;
8162         mbx_sli4_parameters = &mqe->un.get_sli4_parameters.sli4_parameters;
8163         sli4_params->if_type = bf_get(cfg_if_type, mbx_sli4_parameters);
8164         sli4_params->sli_rev = bf_get(cfg_sli_rev, mbx_sli4_parameters);
8165         sli4_params->sli_family = bf_get(cfg_sli_family, mbx_sli4_parameters);
8166         sli4_params->featurelevel_1 = bf_get(cfg_sli_hint_1,
8167                                              mbx_sli4_parameters);
8168         sli4_params->featurelevel_2 = bf_get(cfg_sli_hint_2,
8169                                              mbx_sli4_parameters);
8170         if (bf_get(cfg_phwq, mbx_sli4_parameters))
8171                 phba->sli3_options |= LPFC_SLI4_PHWQ_ENABLED;
8172         else
8173                 phba->sli3_options &= ~LPFC_SLI4_PHWQ_ENABLED;
8174         sli4_params->sge_supp_len = mbx_sli4_parameters->sge_supp_len;
8175         sli4_params->loopbk_scope = bf_get(loopbk_scope, mbx_sli4_parameters);
8176         sli4_params->cqv = bf_get(cfg_cqv, mbx_sli4_parameters);
8177         sli4_params->mqv = bf_get(cfg_mqv, mbx_sli4_parameters);
8178         sli4_params->wqv = bf_get(cfg_wqv, mbx_sli4_parameters);
8179         sli4_params->rqv = bf_get(cfg_rqv, mbx_sli4_parameters);
8180         sli4_params->sgl_pages_max = bf_get(cfg_sgl_page_cnt,
8181                                             mbx_sli4_parameters);
8182         sli4_params->sgl_pp_align = bf_get(cfg_sgl_pp_align,
8183                                            mbx_sli4_parameters);
8184         phba->sli4_hba.extents_in_use = bf_get(cfg_ext, mbx_sli4_parameters);
8185         phba->sli4_hba.rpi_hdrs_in_use = bf_get(cfg_hdrr, mbx_sli4_parameters);
8186
8187         /* Make sure that sge_supp_len can be handled by the driver */
8188         if (sli4_params->sge_supp_len > LPFC_MAX_SGE_SIZE)
8189                 sli4_params->sge_supp_len = LPFC_MAX_SGE_SIZE;
8190
8191         return 0;
8192 }
8193
8194 /**
8195  * lpfc_pci_probe_one_s3 - PCI probe func to reg SLI-3 device to PCI subsystem.
8196  * @pdev: pointer to PCI device
8197  * @pid: pointer to PCI device identifier
8198  *
8199  * This routine is to be called to attach a device with SLI-3 interface spec
8200  * to the PCI subsystem. When an Emulex HBA with SLI-3 interface spec is
8201  * presented on PCI bus, the kernel PCI subsystem looks at PCI device-specific
8202  * information of the device and driver to see if the driver state that it can
8203  * support this kind of device. If the match is successful, the driver core
8204  * invokes this routine. If this routine determines it can claim the HBA, it
8205  * does all the initialization that it needs to do to handle the HBA properly.
8206  *
8207  * Return code
8208  *      0 - driver can claim the device
8209  *      negative value - driver can not claim the device
8210  **/
8211 static int __devinit
8212 lpfc_pci_probe_one_s3(struct pci_dev *pdev, const struct pci_device_id *pid)
8213 {
8214         struct lpfc_hba   *phba;
8215         struct lpfc_vport *vport = NULL;
8216         struct Scsi_Host  *shost = NULL;
8217         int error;
8218         uint32_t cfg_mode, intr_mode;
8219
8220         /* Allocate memory for HBA structure */
8221         phba = lpfc_hba_alloc(pdev);
8222         if (!phba)
8223                 return -ENOMEM;
8224
8225         /* Perform generic PCI device enabling operation */
8226         error = lpfc_enable_pci_dev(phba);
8227         if (error) {
8228                 lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
8229                                 "1401 Failed to enable pci device.\n");
8230                 goto out_free_phba;
8231         }
8232
8233         /* Set up SLI API function jump table for PCI-device group-0 HBAs */
8234         error = lpfc_api_table_setup(phba, LPFC_PCI_DEV_LP);
8235         if (error)
8236                 goto out_disable_pci_dev;
8237
8238         /* Set up SLI-3 specific device PCI memory space */
8239         error = lpfc_sli_pci_mem_setup(phba);
8240         if (error) {
8241                 lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
8242                                 "1402 Failed to set up pci memory space.\n");
8243                 goto out_disable_pci_dev;
8244         }
8245
8246         /* Set up phase-1 common device driver resources */
8247         error = lpfc_setup_driver_resource_phase1(phba);
8248         if (error) {
8249                 lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
8250                                 "1403 Failed to set up driver resource.\n");
8251                 goto out_unset_pci_mem_s3;
8252         }
8253
8254         /* Set up SLI-3 specific device driver resources */
8255         error = lpfc_sli_driver_resource_setup(phba);
8256         if (error) {
8257                 lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
8258                                 "1404 Failed to set up driver resource.\n");
8259                 goto out_unset_pci_mem_s3;
8260         }
8261
8262         /* Initialize and populate the iocb list per host */
8263         error = lpfc_init_iocb_list(phba, LPFC_IOCB_LIST_CNT);
8264         if (error) {
8265                 lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
8266                                 "1405 Failed to initialize iocb list.\n");
8267                 goto out_unset_driver_resource_s3;
8268         }
8269
8270         /* Set up common device driver resources */
8271         error = lpfc_setup_driver_resource_phase2(phba);
8272         if (error) {
8273                 lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
8274                                 "1406 Failed to set up driver resource.\n");
8275                 goto out_free_iocb_list;
8276         }
8277
8278         /* Create SCSI host to the physical port */
8279         error = lpfc_create_shost(phba);
8280         if (error) {
8281                 lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
8282                                 "1407 Failed to create scsi host.\n");
8283                 goto out_unset_driver_resource;
8284         }
8285
8286         /* Configure sysfs attributes */
8287         vport = phba->pport;
8288         error = lpfc_alloc_sysfs_attr(vport);
8289         if (error) {
8290                 lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
8291                                 "1476 Failed to allocate sysfs attr\n");
8292                 goto out_destroy_shost;
8293         }
8294
8295         shost = lpfc_shost_from_vport(vport); /* save shost for error cleanup */
8296         /* Now, trying to enable interrupt and bring up the device */
8297         cfg_mode = phba->cfg_use_msi;
8298         while (true) {
8299                 /* Put device to a known state before enabling interrupt */
8300                 lpfc_stop_port(phba);
8301                 /* Configure and enable interrupt */
8302                 intr_mode = lpfc_sli_enable_intr(phba, cfg_mode);
8303                 if (intr_mode == LPFC_INTR_ERROR) {
8304                         lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
8305                                         "0431 Failed to enable interrupt.\n");
8306                         error = -ENODEV;
8307                         goto out_free_sysfs_attr;
8308                 }
8309                 /* SLI-3 HBA setup */
8310                 if (lpfc_sli_hba_setup(phba)) {
8311                         lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
8312                                         "1477 Failed to set up hba\n");
8313                         error = -ENODEV;
8314                         goto out_remove_device;
8315                 }
8316
8317                 /* Wait 50ms for the interrupts of previous mailbox commands */
8318                 msleep(50);
8319                 /* Check active interrupts on message signaled interrupts */
8320                 if (intr_mode == 0 ||
8321                     phba->sli.slistat.sli_intr > LPFC_MSIX_VECTORS) {
8322                         /* Log the current active interrupt mode */
8323                         phba->intr_mode = intr_mode;
8324                         lpfc_log_intr_mode(phba, intr_mode);
8325                         break;
8326                 } else {
8327                         lpfc_printf_log(phba, KERN_INFO, LOG_INIT,
8328                                         "0447 Configure interrupt mode (%d) "
8329                                         "failed active interrupt test.\n",
8330                                         intr_mode);
8331                         /* Disable the current interrupt mode */
8332                         lpfc_sli_disable_intr(phba);
8333                         /* Try next level of interrupt mode */
8334                         cfg_mode = --intr_mode;
8335                 }
8336         }
8337
8338         /* Perform post initialization setup */
8339         lpfc_post_init_setup(phba);
8340
8341         /* Check if there are static vports to be created. */
8342         lpfc_create_static_vport(phba);
8343
8344         return 0;
8345
8346 out_remove_device:
8347         lpfc_unset_hba(phba);
8348 out_free_sysfs_attr:
8349         lpfc_free_sysfs_attr(vport);
8350 out_destroy_shost:
8351         lpfc_destroy_shost(phba);
8352 out_unset_driver_resource:
8353         lpfc_unset_driver_resource_phase2(phba);
8354 out_free_iocb_list:
8355         lpfc_free_iocb_list(phba);
8356 out_unset_driver_resource_s3:
8357         lpfc_sli_driver_resource_unset(phba);
8358 out_unset_pci_mem_s3:
8359         lpfc_sli_pci_mem_unset(phba);
8360 out_disable_pci_dev:
8361         lpfc_disable_pci_dev(phba);
8362         if (shost)
8363                 scsi_host_put(shost);
8364 out_free_phba:
8365         lpfc_hba_free(phba);
8366         return error;
8367 }
8368
8369 /**
8370  * lpfc_pci_remove_one_s3 - PCI func to unreg SLI-3 device from PCI subsystem.
8371  * @pdev: pointer to PCI device
8372  *
8373  * This routine is to be called to disattach a device with SLI-3 interface
8374  * spec from PCI subsystem. When an Emulex HBA with SLI-3 interface spec is
8375  * removed from PCI bus, it performs all the necessary cleanup for the HBA
8376  * device to be removed from the PCI subsystem properly.
8377  **/
8378 static void __devexit
8379 lpfc_pci_remove_one_s3(struct pci_dev *pdev)
8380 {
8381         struct Scsi_Host  *shost = pci_get_drvdata(pdev);
8382         struct lpfc_vport *vport = (struct lpfc_vport *) shost->hostdata;
8383         struct lpfc_vport **vports;
8384         struct lpfc_hba   *phba = vport->phba;
8385         int i;
8386         int bars = pci_select_bars(pdev, IORESOURCE_MEM);
8387
8388         spin_lock_irq(&phba->hbalock);
8389         vport->load_flag |= FC_UNLOADING;
8390         spin_unlock_irq(&phba->hbalock);
8391
8392         lpfc_free_sysfs_attr(vport);
8393
8394         /* Release all the vports against this physical port */
8395         vports = lpfc_create_vport_work_array(phba);
8396         if (vports != NULL)
8397                 for (i = 1; i <= phba->max_vports && vports[i] != NULL; i++)
8398                         fc_vport_terminate(vports[i]->fc_vport);
8399         lpfc_destroy_vport_work_array(phba, vports);
8400
8401         /* Remove FC host and then SCSI host with the physical port */
8402         fc_remove_host(shost);
8403         scsi_remove_host(shost);
8404         lpfc_cleanup(vport);
8405
8406         /*
8407          * Bring down the SLI Layer. This step disable all interrupts,
8408          * clears the rings, discards all mailbox commands, and resets
8409          * the HBA.
8410          */
8411
8412         /* HBA interrupt will be disabled after this call */
8413         lpfc_sli_hba_down(phba);
8414         /* Stop kthread signal shall trigger work_done one more time */
8415         kthread_stop(phba->worker_thread);
8416         /* Final cleanup of txcmplq and reset the HBA */
8417         lpfc_sli_brdrestart(phba);
8418
8419         lpfc_stop_hba_timers(phba);
8420         spin_lock_irq(&phba->hbalock);
8421         list_del_init(&vport->listentry);
8422         spin_unlock_irq(&phba->hbalock);
8423
8424         lpfc_debugfs_terminate(vport);
8425
8426         /* Disable SR-IOV if enabled */
8427         if (phba->cfg_sriov_nr_virtfn)
8428                 pci_disable_sriov(pdev);
8429
8430         /* Disable interrupt */
8431         lpfc_sli_disable_intr(phba);
8432
8433         pci_set_drvdata(pdev, NULL);
8434         scsi_host_put(shost);
8435
8436         /*
8437          * Call scsi_free before mem_free since scsi bufs are released to their
8438          * corresponding pools here.
8439          */
8440         lpfc_scsi_free(phba);
8441         lpfc_mem_free_all(phba);
8442
8443         dma_free_coherent(&pdev->dev, lpfc_sli_hbq_size(),
8444                           phba->hbqslimp.virt, phba->hbqslimp.phys);
8445
8446         /* Free resources associated with SLI2 interface */
8447         dma_free_coherent(&pdev->dev, SLI2_SLIM_SIZE,
8448                           phba->slim2p.virt, phba->slim2p.phys);
8449
8450         /* unmap adapter SLIM and Control Registers */
8451         iounmap(phba->ctrl_regs_memmap_p);
8452         iounmap(phba->slim_memmap_p);
8453
8454         lpfc_hba_free(phba);
8455
8456         pci_release_selected_regions(pdev, bars);
8457         pci_disable_device(pdev);
8458 }
8459
8460 /**
8461  * lpfc_pci_suspend_one_s3 - PCI func to suspend SLI-3 device for power mgmnt
8462  * @pdev: pointer to PCI device
8463  * @msg: power management message
8464  *
8465  * This routine is to be called from the kernel's PCI subsystem to support
8466  * system Power Management (PM) to device with SLI-3 interface spec. When
8467  * PM invokes this method, it quiesces the device by stopping the driver's
8468  * worker thread for the device, turning off device's interrupt and DMA,
8469  * and bring the device offline. Note that as the driver implements the
8470  * minimum PM requirements to a power-aware driver's PM support for the
8471  * suspend/resume -- all the possible PM messages (SUSPEND, HIBERNATE, FREEZE)
8472  * to the suspend() method call will be treated as SUSPEND and the driver will
8473  * fully reinitialize its device during resume() method call, the driver will
8474  * set device to PCI_D3hot state in PCI config space instead of setting it
8475  * according to the @msg provided by the PM.
8476  *
8477  * Return code
8478  *      0 - driver suspended the device
8479  *      Error otherwise
8480  **/
8481 static int
8482 lpfc_pci_suspend_one_s3(struct pci_dev *pdev, pm_message_t msg)
8483 {
8484         struct Scsi_Host *shost = pci_get_drvdata(pdev);
8485         struct lpfc_hba *phba = ((struct lpfc_vport *)shost->hostdata)->phba;
8486
8487         lpfc_printf_log(phba, KERN_INFO, LOG_INIT,
8488                         "0473 PCI device Power Management suspend.\n");
8489
8490         /* Bring down the device */
8491         lpfc_offline_prep(phba);
8492         lpfc_offline(phba);
8493         kthread_stop(phba->worker_thread);
8494
8495         /* Disable interrupt from device */
8496         lpfc_sli_disable_intr(phba);
8497
8498         /* Save device state to PCI config space */
8499         pci_save_state(pdev);
8500         pci_set_power_state(pdev, PCI_D3hot);
8501
8502         return 0;
8503 }
8504
8505 /**
8506  * lpfc_pci_resume_one_s3 - PCI func to resume SLI-3 device for power mgmnt
8507  * @pdev: pointer to PCI device
8508  *
8509  * This routine is to be called from the kernel's PCI subsystem to support
8510  * system Power Management (PM) to device with SLI-3 interface spec. When PM
8511  * invokes this method, it restores the device's PCI config space state and
8512  * fully reinitializes the device and brings it online. Note that as the
8513  * driver implements the minimum PM requirements to a power-aware driver's
8514  * PM for suspend/resume -- all the possible PM messages (SUSPEND, HIBERNATE,
8515  * FREEZE) to the suspend() method call will be treated as SUSPEND and the
8516  * driver will fully reinitialize its device during resume() method call,
8517  * the device will be set to PCI_D0 directly in PCI config space before
8518  * restoring the state.
8519  *
8520  * Return code
8521  *      0 - driver suspended the device
8522  *      Error otherwise
8523  **/
8524 static int
8525 lpfc_pci_resume_one_s3(struct pci_dev *pdev)
8526 {
8527         struct Scsi_Host *shost = pci_get_drvdata(pdev);
8528         struct lpfc_hba *phba = ((struct lpfc_vport *)shost->hostdata)->phba;
8529         uint32_t intr_mode;
8530         int error;
8531
8532         lpfc_printf_log(phba, KERN_INFO, LOG_INIT,
8533                         "0452 PCI device Power Management resume.\n");
8534
8535         /* Restore device state from PCI config space */
8536         pci_set_power_state(pdev, PCI_D0);
8537         pci_restore_state(pdev);
8538
8539         /*
8540          * As the new kernel behavior of pci_restore_state() API call clears
8541          * device saved_state flag, need to save the restored state again.
8542          */
8543         pci_save_state(pdev);
8544
8545         if (pdev->is_busmaster)
8546                 pci_set_master(pdev);
8547
8548         /* Startup the kernel thread for this host adapter. */
8549         phba->worker_thread = kthread_run(lpfc_do_work, phba,
8550                                         "lpfc_worker_%d", phba->brd_no);
8551         if (IS_ERR(phba->worker_thread)) {
8552                 error = PTR_ERR(phba->worker_thread);
8553                 lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
8554                                 "0434 PM resume failed to start worker "
8555                                 "thread: error=x%x.\n", error);
8556                 return error;
8557         }
8558
8559         /* Configure and enable interrupt */
8560         intr_mode = lpfc_sli_enable_intr(phba, phba->intr_mode);
8561         if (intr_mode == LPFC_INTR_ERROR) {
8562                 lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
8563                                 "0430 PM resume Failed to enable interrupt\n");
8564                 return -EIO;
8565         } else
8566                 phba->intr_mode = intr_mode;
8567
8568         /* Restart HBA and bring it online */
8569         lpfc_sli_brdrestart(phba);
8570         lpfc_online(phba);
8571
8572         /* Log the current active interrupt mode */
8573         lpfc_log_intr_mode(phba, phba->intr_mode);
8574
8575         return 0;
8576 }
8577
8578 /**
8579  * lpfc_sli_prep_dev_for_recover - Prepare SLI3 device for pci slot recover
8580  * @phba: pointer to lpfc hba data structure.
8581  *
8582  * This routine is called to prepare the SLI3 device for PCI slot recover. It
8583  * aborts all the outstanding SCSI I/Os to the pci device.
8584  **/
8585 static void
8586 lpfc_sli_prep_dev_for_recover(struct lpfc_hba *phba)
8587 {
8588         struct lpfc_sli *psli = &phba->sli;
8589         struct lpfc_sli_ring  *pring;
8590
8591         lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
8592                         "2723 PCI channel I/O abort preparing for recovery\n");
8593
8594         /*
8595          * There may be errored I/Os through HBA, abort all I/Os on txcmplq
8596          * and let the SCSI mid-layer to retry them to recover.
8597          */
8598         pring = &psli->ring[psli->fcp_ring];
8599         lpfc_sli_abort_iocb_ring(phba, pring);
8600 }
8601
8602 /**
8603  * lpfc_sli_prep_dev_for_reset - Prepare SLI3 device for pci slot reset
8604  * @phba: pointer to lpfc hba data structure.
8605  *
8606  * This routine is called to prepare the SLI3 device for PCI slot reset. It
8607  * disables the device interrupt and pci device, and aborts the internal FCP
8608  * pending I/Os.
8609  **/
8610 static void
8611 lpfc_sli_prep_dev_for_reset(struct lpfc_hba *phba)
8612 {
8613         lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
8614                         "2710 PCI channel disable preparing for reset\n");
8615
8616         /* Block any management I/Os to the device */
8617         lpfc_block_mgmt_io(phba);
8618
8619         /* Block all SCSI devices' I/Os on the host */
8620         lpfc_scsi_dev_block(phba);
8621
8622         /* stop all timers */
8623         lpfc_stop_hba_timers(phba);
8624
8625         /* Disable interrupt and pci device */
8626         lpfc_sli_disable_intr(phba);
8627         pci_disable_device(phba->pcidev);
8628
8629         /* Flush all driver's outstanding SCSI I/Os as we are to reset */
8630         lpfc_sli_flush_fcp_rings(phba);
8631 }
8632
8633 /**
8634  * lpfc_sli_prep_dev_for_perm_failure - Prepare SLI3 dev for pci slot disable
8635  * @phba: pointer to lpfc hba data structure.
8636  *
8637  * This routine is called to prepare the SLI3 device for PCI slot permanently
8638  * disabling. It blocks the SCSI transport layer traffic and flushes the FCP
8639  * pending I/Os.
8640  **/
8641 static void
8642 lpfc_sli_prep_dev_for_perm_failure(struct lpfc_hba *phba)
8643 {
8644         lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
8645                         "2711 PCI channel permanent disable for failure\n");
8646         /* Block all SCSI devices' I/Os on the host */
8647         lpfc_scsi_dev_block(phba);
8648
8649         /* stop all timers */
8650         lpfc_stop_hba_timers(phba);
8651
8652         /* Clean up all driver's outstanding SCSI I/Os */
8653         lpfc_sli_flush_fcp_rings(phba);
8654 }
8655
8656 /**
8657  * lpfc_io_error_detected_s3 - Method for handling SLI-3 device PCI I/O error
8658  * @pdev: pointer to PCI device.
8659  * @state: the current PCI connection state.
8660  *
8661  * This routine is called from the PCI subsystem for I/O error handling to
8662  * device with SLI-3 interface spec. This function is called by the PCI
8663  * subsystem after a PCI bus error affecting this device has been detected.
8664  * When this function is invoked, it will need to stop all the I/Os and
8665  * interrupt(s) to the device. Once that is done, it will return
8666  * PCI_ERS_RESULT_NEED_RESET for the PCI subsystem to perform proper recovery
8667  * as desired.
8668  *
8669  * Return codes
8670  *      PCI_ERS_RESULT_CAN_RECOVER - can be recovered with reset_link
8671  *      PCI_ERS_RESULT_NEED_RESET - need to reset before recovery
8672  *      PCI_ERS_RESULT_DISCONNECT - device could not be recovered
8673  **/
8674 static pci_ers_result_t
8675 lpfc_io_error_detected_s3(struct pci_dev *pdev, pci_channel_state_t state)
8676 {
8677         struct Scsi_Host *shost = pci_get_drvdata(pdev);
8678         struct lpfc_hba *phba = ((struct lpfc_vport *)shost->hostdata)->phba;
8679
8680         switch (state) {
8681         case pci_channel_io_normal:
8682                 /* Non-fatal error, prepare for recovery */
8683                 lpfc_sli_prep_dev_for_recover(phba);
8684                 return PCI_ERS_RESULT_CAN_RECOVER;
8685         case pci_channel_io_frozen:
8686                 /* Fatal error, prepare for slot reset */
8687                 lpfc_sli_prep_dev_for_reset(phba);
8688                 return PCI_ERS_RESULT_NEED_RESET;
8689         case pci_channel_io_perm_failure:
8690                 /* Permanent failure, prepare for device down */
8691                 lpfc_sli_prep_dev_for_perm_failure(phba);
8692                 return PCI_ERS_RESULT_DISCONNECT;
8693         default:
8694                 /* Unknown state, prepare and request slot reset */
8695                 lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
8696                                 "0472 Unknown PCI error state: x%x\n", state);
8697                 lpfc_sli_prep_dev_for_reset(phba);
8698                 return PCI_ERS_RESULT_NEED_RESET;
8699         }
8700 }
8701
8702 /**
8703  * lpfc_io_slot_reset_s3 - Method for restarting PCI SLI-3 device from scratch.
8704  * @pdev: pointer to PCI device.
8705  *
8706  * This routine is called from the PCI subsystem for error handling to
8707  * device with SLI-3 interface spec. This is called after PCI bus has been
8708  * reset to restart the PCI card from scratch, as if from a cold-boot.
8709  * During the PCI subsystem error recovery, after driver returns
8710  * PCI_ERS_RESULT_NEED_RESET, the PCI subsystem will perform proper error
8711  * recovery and then call this routine before calling the .resume method
8712  * to recover the device. This function will initialize the HBA device,
8713  * enable the interrupt, but it will just put the HBA to offline state
8714  * without passing any I/O traffic.
8715  *
8716  * Return codes
8717  *      PCI_ERS_RESULT_RECOVERED - the device has been recovered
8718  *      PCI_ERS_RESULT_DISCONNECT - device could not be recovered
8719  */
8720 static pci_ers_result_t
8721 lpfc_io_slot_reset_s3(struct pci_dev *pdev)
8722 {
8723         struct Scsi_Host *shost = pci_get_drvdata(pdev);
8724         struct lpfc_hba *phba = ((struct lpfc_vport *)shost->hostdata)->phba;
8725         struct lpfc_sli *psli = &phba->sli;
8726         uint32_t intr_mode;
8727
8728         dev_printk(KERN_INFO, &pdev->dev, "recovering from a slot reset.\n");
8729         if (pci_enable_device_mem(pdev)) {
8730                 printk(KERN_ERR "lpfc: Cannot re-enable "
8731                         "PCI device after reset.\n");
8732                 return PCI_ERS_RESULT_DISCONNECT;
8733         }
8734
8735         pci_restore_state(pdev);
8736
8737         /*
8738          * As the new kernel behavior of pci_restore_state() API call clears
8739          * device saved_state flag, need to save the restored state again.
8740          */
8741         pci_save_state(pdev);
8742
8743         if (pdev->is_busmaster)
8744                 pci_set_master(pdev);
8745
8746         spin_lock_irq(&phba->hbalock);
8747         psli->sli_flag &= ~LPFC_SLI_ACTIVE;
8748         spin_unlock_irq(&phba->hbalock);
8749
8750         /* Configure and enable interrupt */
8751         intr_mode = lpfc_sli_enable_intr(phba, phba->intr_mode);
8752         if (intr_mode == LPFC_INTR_ERROR) {
8753                 lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
8754                                 "0427 Cannot re-enable interrupt after "
8755                                 "slot reset.\n");
8756                 return PCI_ERS_RESULT_DISCONNECT;
8757         } else
8758                 phba->intr_mode = intr_mode;
8759
8760         /* Take device offline, it will perform cleanup */
8761         lpfc_offline_prep(phba);
8762         lpfc_offline(phba);
8763         lpfc_sli_brdrestart(phba);
8764
8765         /* Log the current active interrupt mode */
8766         lpfc_log_intr_mode(phba, phba->intr_mode);
8767
8768         return PCI_ERS_RESULT_RECOVERED;
8769 }
8770
8771 /**
8772  * lpfc_io_resume_s3 - Method for resuming PCI I/O operation on SLI-3 device.
8773  * @pdev: pointer to PCI device
8774  *
8775  * This routine is called from the PCI subsystem for error handling to device
8776  * with SLI-3 interface spec. It is called when kernel error recovery tells
8777  * the lpfc driver that it is ok to resume normal PCI operation after PCI bus
8778  * error recovery. After this call, traffic can start to flow from this device
8779  * again.
8780  */
8781 static void
8782 lpfc_io_resume_s3(struct pci_dev *pdev)
8783 {
8784         struct Scsi_Host *shost = pci_get_drvdata(pdev);
8785         struct lpfc_hba *phba = ((struct lpfc_vport *)shost->hostdata)->phba;
8786
8787         /* Bring device online, it will be no-op for non-fatal error resume */
8788         lpfc_online(phba);
8789
8790         /* Clean up Advanced Error Reporting (AER) if needed */
8791         if (phba->hba_flag & HBA_AER_ENABLED)
8792                 pci_cleanup_aer_uncorrect_error_status(pdev);
8793 }
8794
8795 /**
8796  * lpfc_sli4_get_els_iocb_cnt - Calculate the # of ELS IOCBs to reserve
8797  * @phba: pointer to lpfc hba data structure.
8798  *
8799  * returns the number of ELS/CT IOCBs to reserve
8800  **/
8801 int
8802 lpfc_sli4_get_els_iocb_cnt(struct lpfc_hba *phba)
8803 {
8804         int max_xri = phba->sli4_hba.max_cfg_param.max_xri;
8805
8806         if (phba->sli_rev == LPFC_SLI_REV4) {
8807                 if (max_xri <= 100)
8808                         return 10;
8809                 else if (max_xri <= 256)
8810                         return 25;
8811                 else if (max_xri <= 512)
8812                         return 50;
8813                 else if (max_xri <= 1024)
8814                         return 100;
8815                 else
8816                         return 150;
8817         } else
8818                 return 0;
8819 }
8820
8821 /**
8822  * lpfc_write_firmware - attempt to write a firmware image to the port
8823  * @phba: pointer to lpfc hba data structure.
8824  * @fw: pointer to firmware image returned from request_firmware.
8825  *
8826  * returns the number of bytes written if write is successful.
8827  * returns a negative error value if there were errors.
8828  * returns 0 if firmware matches currently active firmware on port.
8829  **/
8830 int
8831 lpfc_write_firmware(struct lpfc_hba *phba, const struct firmware *fw)
8832 {
8833         char fwrev[32];
8834         struct lpfc_grp_hdr *image = (struct lpfc_grp_hdr *)fw->data;
8835         struct list_head dma_buffer_list;
8836         int i, rc = 0;
8837         struct lpfc_dmabuf *dmabuf, *next;
8838         uint32_t offset = 0, temp_offset = 0;
8839
8840         INIT_LIST_HEAD(&dma_buffer_list);
8841         if ((image->magic_number != LPFC_GROUP_OJECT_MAGIC_NUM) ||
8842             (bf_get(lpfc_grp_hdr_file_type, image) != LPFC_FILE_TYPE_GROUP) ||
8843             (bf_get(lpfc_grp_hdr_id, image) != LPFC_FILE_ID_GROUP) ||
8844             (image->size != fw->size)) {
8845                 lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
8846                                 "3022 Invalid FW image found. "
8847                                 "Magic:%d Type:%x ID:%x\n",
8848                                 image->magic_number,
8849                                 bf_get(lpfc_grp_hdr_file_type, image),
8850                                 bf_get(lpfc_grp_hdr_id, image));
8851                 return -EINVAL;
8852         }
8853         lpfc_decode_firmware_rev(phba, fwrev, 1);
8854         if (strncmp(fwrev, image->rev_name, strnlen(fwrev, 16))) {
8855                 lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
8856                                 "3023 Updating Firmware. Current Version:%s "
8857                                 "New Version:%s\n",
8858                                 fwrev, image->rev_name);
8859                 for (i = 0; i < LPFC_MBX_WR_CONFIG_MAX_BDE; i++) {
8860                         dmabuf = kzalloc(sizeof(struct lpfc_dmabuf),
8861                                          GFP_KERNEL);
8862                         if (!dmabuf) {
8863                                 rc = -ENOMEM;
8864                                 goto out;
8865                         }
8866                         dmabuf->virt = dma_alloc_coherent(&phba->pcidev->dev,
8867                                                           SLI4_PAGE_SIZE,
8868                                                           &dmabuf->phys,
8869                                                           GFP_KERNEL);
8870                         if (!dmabuf->virt) {
8871                                 kfree(dmabuf);
8872                                 rc = -ENOMEM;
8873                                 goto out;
8874                         }
8875                         list_add_tail(&dmabuf->list, &dma_buffer_list);
8876                 }
8877                 while (offset < fw->size) {
8878                         temp_offset = offset;
8879                         list_for_each_entry(dmabuf, &dma_buffer_list, list) {
8880                                 if (offset + SLI4_PAGE_SIZE > fw->size) {
8881                                         temp_offset += fw->size - offset;
8882                                         memcpy(dmabuf->virt,
8883                                                fw->data + temp_offset,
8884                                                fw->size - offset);
8885                                         break;
8886                                 }
8887                                 temp_offset += SLI4_PAGE_SIZE;
8888                                 memcpy(dmabuf->virt, fw->data + temp_offset,
8889                                        SLI4_PAGE_SIZE);
8890                         }
8891                         rc = lpfc_wr_object(phba, &dma_buffer_list,
8892                                     (fw->size - offset), &offset);
8893                         if (rc) {
8894                                 lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
8895                                                 "3024 Firmware update failed. "
8896                                                 "%d\n", rc);
8897                                 goto out;
8898                         }
8899                 }
8900                 rc = offset;
8901         }
8902 out:
8903         list_for_each_entry_safe(dmabuf, next, &dma_buffer_list, list) {
8904                 list_del(&dmabuf->list);
8905                 dma_free_coherent(&phba->pcidev->dev, SLI4_PAGE_SIZE,
8906                                   dmabuf->virt, dmabuf->phys);
8907                 kfree(dmabuf);
8908         }
8909         return rc;
8910 }
8911
8912 /**
8913  * lpfc_pci_probe_one_s4 - PCI probe func to reg SLI-4 device to PCI subsys
8914  * @pdev: pointer to PCI device
8915  * @pid: pointer to PCI device identifier
8916  *
8917  * This routine is called from the kernel's PCI subsystem to device with
8918  * SLI-4 interface spec. When an Emulex HBA with SLI-4 interface spec is
8919  * presented on PCI bus, the kernel PCI subsystem looks at PCI device-specific
8920  * information of the device and driver to see if the driver state that it
8921  * can support this kind of device. If the match is successful, the driver
8922  * core invokes this routine. If this routine determines it can claim the HBA,
8923  * it does all the initialization that it needs to do to handle the HBA
8924  * properly.
8925  *
8926  * Return code
8927  *      0 - driver can claim the device
8928  *      negative value - driver can not claim the device
8929  **/
8930 static int __devinit
8931 lpfc_pci_probe_one_s4(struct pci_dev *pdev, const struct pci_device_id *pid)
8932 {
8933         struct lpfc_hba   *phba;
8934         struct lpfc_vport *vport = NULL;
8935         struct Scsi_Host  *shost = NULL;
8936         int error;
8937         uint32_t cfg_mode, intr_mode;
8938         int mcnt;
8939         int adjusted_fcp_eq_count;
8940         int fcp_qidx;
8941         const struct firmware *fw;
8942         uint8_t file_name[16];
8943
8944         /* Allocate memory for HBA structure */
8945         phba = lpfc_hba_alloc(pdev);
8946         if (!phba)
8947                 return -ENOMEM;
8948
8949         /* Perform generic PCI device enabling operation */
8950         error = lpfc_enable_pci_dev(phba);
8951         if (error) {
8952                 lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
8953                                 "1409 Failed to enable pci device.\n");
8954                 goto out_free_phba;
8955         }
8956
8957         /* Set up SLI API function jump table for PCI-device group-1 HBAs */
8958         error = lpfc_api_table_setup(phba, LPFC_PCI_DEV_OC);
8959         if (error)
8960                 goto out_disable_pci_dev;
8961
8962         /* Set up SLI-4 specific device PCI memory space */
8963         error = lpfc_sli4_pci_mem_setup(phba);
8964         if (error) {
8965                 lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
8966                                 "1410 Failed to set up pci memory space.\n");
8967                 goto out_disable_pci_dev;
8968         }
8969
8970         /* Set up phase-1 common device driver resources */
8971         error = lpfc_setup_driver_resource_phase1(phba);
8972         if (error) {
8973                 lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
8974                                 "1411 Failed to set up driver resource.\n");
8975                 goto out_unset_pci_mem_s4;
8976         }
8977
8978         /* Set up SLI-4 Specific device driver resources */
8979         error = lpfc_sli4_driver_resource_setup(phba);
8980         if (error) {
8981                 lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
8982                                 "1412 Failed to set up driver resource.\n");
8983                 goto out_unset_pci_mem_s4;
8984         }
8985
8986         /* Initialize and populate the iocb list per host */
8987
8988         lpfc_printf_log(phba, KERN_INFO, LOG_INIT,
8989                         "2821 initialize iocb list %d.\n",
8990                         phba->cfg_iocb_cnt*1024);
8991         error = lpfc_init_iocb_list(phba, phba->cfg_iocb_cnt*1024);
8992
8993         if (error) {
8994                 lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
8995                                 "1413 Failed to initialize iocb list.\n");
8996                 goto out_unset_driver_resource_s4;
8997         }
8998
8999         INIT_LIST_HEAD(&phba->active_rrq_list);
9000
9001         /* Set up common device driver resources */
9002         error = lpfc_setup_driver_resource_phase2(phba);
9003         if (error) {
9004                 lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
9005                                 "1414 Failed to set up driver resource.\n");
9006                 goto out_free_iocb_list;
9007         }
9008
9009         /* Create SCSI host to the physical port */
9010         error = lpfc_create_shost(phba);
9011         if (error) {
9012                 lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
9013                                 "1415 Failed to create scsi host.\n");
9014                 goto out_unset_driver_resource;
9015         }
9016
9017         /* Configure sysfs attributes */
9018         vport = phba->pport;
9019         error = lpfc_alloc_sysfs_attr(vport);
9020         if (error) {
9021                 lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
9022                                 "1416 Failed to allocate sysfs attr\n");
9023                 goto out_destroy_shost;
9024         }
9025
9026         shost = lpfc_shost_from_vport(vport); /* save shost for error cleanup */
9027         /* Now, trying to enable interrupt and bring up the device */
9028         cfg_mode = phba->cfg_use_msi;
9029         while (true) {
9030                 /* Put device to a known state before enabling interrupt */
9031                 lpfc_stop_port(phba);
9032                 /* Configure and enable interrupt */
9033                 intr_mode = lpfc_sli4_enable_intr(phba, cfg_mode);
9034                 if (intr_mode == LPFC_INTR_ERROR) {
9035                         lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
9036                                         "0426 Failed to enable interrupt.\n");
9037                         error = -ENODEV;
9038                         goto out_free_sysfs_attr;
9039                 }
9040                 /* Default to single EQ for non-MSI-X */
9041                 if (phba->intr_type != MSIX)
9042                         adjusted_fcp_eq_count = 0;
9043                 else if (phba->sli4_hba.msix_vec_nr <
9044                                         phba->cfg_fcp_eq_count + 1)
9045                         adjusted_fcp_eq_count = phba->sli4_hba.msix_vec_nr - 1;
9046                 else
9047                         adjusted_fcp_eq_count = phba->cfg_fcp_eq_count;
9048                 /* Free unused EQs */
9049                 for (fcp_qidx = adjusted_fcp_eq_count;
9050                      fcp_qidx < phba->cfg_fcp_eq_count;
9051                      fcp_qidx++) {
9052                         lpfc_sli4_queue_free(phba->sli4_hba.fp_eq[fcp_qidx]);
9053                         /* do not delete the first fcp_cq */
9054                         if (fcp_qidx)
9055                                 lpfc_sli4_queue_free(
9056                                         phba->sli4_hba.fcp_cq[fcp_qidx]);
9057                 }
9058                 phba->cfg_fcp_eq_count = adjusted_fcp_eq_count;
9059                 /* Set up SLI-4 HBA */
9060                 if (lpfc_sli4_hba_setup(phba)) {
9061                         lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
9062                                         "1421 Failed to set up hba\n");
9063                         error = -ENODEV;
9064                         goto out_disable_intr;
9065                 }
9066
9067                 /* Send NOP mbx cmds for non-INTx mode active interrupt test */
9068                 if (intr_mode != 0)
9069                         mcnt = lpfc_sli4_send_nop_mbox_cmds(phba,
9070                                                             LPFC_ACT_INTR_CNT);
9071
9072                 /* Check active interrupts received only for MSI/MSI-X */
9073                 if (intr_mode == 0 ||
9074                     phba->sli.slistat.sli_intr >= LPFC_ACT_INTR_CNT) {
9075                         /* Log the current active interrupt mode */
9076                         phba->intr_mode = intr_mode;
9077                         lpfc_log_intr_mode(phba, intr_mode);
9078                         break;
9079                 }
9080                 lpfc_printf_log(phba, KERN_INFO, LOG_INIT,
9081                                 "0451 Configure interrupt mode (%d) "
9082                                 "failed active interrupt test.\n",
9083                                 intr_mode);
9084                 /* Unset the previous SLI-4 HBA setup. */
9085                 /*
9086                  * TODO:  Is this operation compatible with IF TYPE 2
9087                  * devices?  All port state is deleted and cleared.
9088                  */
9089                 lpfc_sli4_unset_hba(phba);
9090                 /* Try next level of interrupt mode */
9091                 cfg_mode = --intr_mode;
9092         }
9093
9094         /* Perform post initialization setup */
9095         lpfc_post_init_setup(phba);
9096
9097         /* check for firmware upgrade or downgrade */
9098         snprintf(file_name, 16, "%s.grp", phba->ModelName);
9099         error = request_firmware(&fw, file_name, &phba->pcidev->dev);
9100         if (!error) {
9101                 lpfc_write_firmware(phba, fw);
9102                 release_firmware(fw);
9103         }
9104
9105         /* Check if there are static vports to be created. */
9106         lpfc_create_static_vport(phba);
9107
9108         return 0;
9109
9110 out_disable_intr:
9111         lpfc_sli4_disable_intr(phba);
9112 out_free_sysfs_attr:
9113         lpfc_free_sysfs_attr(vport);
9114 out_destroy_shost:
9115         lpfc_destroy_shost(phba);
9116 out_unset_driver_resource:
9117         lpfc_unset_driver_resource_phase2(phba);
9118 out_free_iocb_list:
9119         lpfc_free_iocb_list(phba);
9120 out_unset_driver_resource_s4:
9121         lpfc_sli4_driver_resource_unset(phba);
9122 out_unset_pci_mem_s4:
9123         lpfc_sli4_pci_mem_unset(phba);
9124 out_disable_pci_dev:
9125         lpfc_disable_pci_dev(phba);
9126         if (shost)
9127                 scsi_host_put(shost);
9128 out_free_phba:
9129         lpfc_hba_free(phba);
9130         return error;
9131 }
9132
9133 /**
9134  * lpfc_pci_remove_one_s4 - PCI func to unreg SLI-4 device from PCI subsystem
9135  * @pdev: pointer to PCI device
9136  *
9137  * This routine is called from the kernel's PCI subsystem to device with
9138  * SLI-4 interface spec. When an Emulex HBA with SLI-4 interface spec is
9139  * removed from PCI bus, it performs all the necessary cleanup for the HBA
9140  * device to be removed from the PCI subsystem properly.
9141  **/
9142 static void __devexit
9143 lpfc_pci_remove_one_s4(struct pci_dev *pdev)
9144 {
9145         struct Scsi_Host *shost = pci_get_drvdata(pdev);
9146         struct lpfc_vport *vport = (struct lpfc_vport *) shost->hostdata;
9147         struct lpfc_vport **vports;
9148         struct lpfc_hba *phba = vport->phba;
9149         int i;
9150
9151         /* Mark the device unloading flag */
9152         spin_lock_irq(&phba->hbalock);
9153         vport->load_flag |= FC_UNLOADING;
9154         spin_unlock_irq(&phba->hbalock);
9155
9156         /* Free the HBA sysfs attributes */
9157         lpfc_free_sysfs_attr(vport);
9158
9159         /* Release all the vports against this physical port */
9160         vports = lpfc_create_vport_work_array(phba);
9161         if (vports != NULL)
9162                 for (i = 1; i <= phba->max_vports && vports[i] != NULL; i++)
9163                         fc_vport_terminate(vports[i]->fc_vport);
9164         lpfc_destroy_vport_work_array(phba, vports);
9165
9166         /* Remove FC host and then SCSI host with the physical port */
9167         fc_remove_host(shost);
9168         scsi_remove_host(shost);
9169
9170         /* Perform cleanup on the physical port */
9171         lpfc_cleanup(vport);
9172
9173         /*
9174          * Bring down the SLI Layer. This step disables all interrupts,
9175          * clears the rings, discards all mailbox commands, and resets
9176          * the HBA FCoE function.
9177          */
9178         lpfc_debugfs_terminate(vport);
9179         lpfc_sli4_hba_unset(phba);
9180
9181         spin_lock_irq(&phba->hbalock);
9182         list_del_init(&vport->listentry);
9183         spin_unlock_irq(&phba->hbalock);
9184
9185         /* Perform scsi free before driver resource_unset since scsi
9186          * buffers are released to their corresponding pools here.
9187          */
9188         lpfc_scsi_free(phba);
9189         lpfc_sli4_driver_resource_unset(phba);
9190
9191         /* Unmap adapter Control and Doorbell registers */
9192         lpfc_sli4_pci_mem_unset(phba);
9193
9194         /* Release PCI resources and disable device's PCI function */
9195         scsi_host_put(shost);
9196         lpfc_disable_pci_dev(phba);
9197
9198         /* Finally, free the driver's device data structure */
9199         lpfc_hba_free(phba);
9200
9201         return;
9202 }
9203
9204 /**
9205  * lpfc_pci_suspend_one_s4 - PCI func to suspend SLI-4 device for power mgmnt
9206  * @pdev: pointer to PCI device
9207  * @msg: power management message
9208  *
9209  * This routine is called from the kernel's PCI subsystem to support system
9210  * Power Management (PM) to device with SLI-4 interface spec. When PM invokes
9211  * this method, it quiesces the device by stopping the driver's worker
9212  * thread for the device, turning off device's interrupt and DMA, and bring
9213  * the device offline. Note that as the driver implements the minimum PM
9214  * requirements to a power-aware driver's PM support for suspend/resume -- all
9215  * the possible PM messages (SUSPEND, HIBERNATE, FREEZE) to the suspend()
9216  * method call will be treated as SUSPEND and the driver will fully
9217  * reinitialize its device during resume() method call, the driver will set
9218  * device to PCI_D3hot state in PCI config space instead of setting it
9219  * according to the @msg provided by the PM.
9220  *
9221  * Return code
9222  *      0 - driver suspended the device
9223  *      Error otherwise
9224  **/
9225 static int
9226 lpfc_pci_suspend_one_s4(struct pci_dev *pdev, pm_message_t msg)
9227 {
9228         struct Scsi_Host *shost = pci_get_drvdata(pdev);
9229         struct lpfc_hba *phba = ((struct lpfc_vport *)shost->hostdata)->phba;
9230
9231         lpfc_printf_log(phba, KERN_INFO, LOG_INIT,
9232                         "2843 PCI device Power Management suspend.\n");
9233
9234         /* Bring down the device */
9235         lpfc_offline_prep(phba);
9236         lpfc_offline(phba);
9237         kthread_stop(phba->worker_thread);
9238
9239         /* Disable interrupt from device */
9240         lpfc_sli4_disable_intr(phba);
9241
9242         /* Save device state to PCI config space */
9243         pci_save_state(pdev);
9244         pci_set_power_state(pdev, PCI_D3hot);
9245
9246         return 0;
9247 }
9248
9249 /**
9250  * lpfc_pci_resume_one_s4 - PCI func to resume SLI-4 device for power mgmnt
9251  * @pdev: pointer to PCI device
9252  *
9253  * This routine is called from the kernel's PCI subsystem to support system
9254  * Power Management (PM) to device with SLI-4 interface spac. When PM invokes
9255  * this method, it restores the device's PCI config space state and fully
9256  * reinitializes the device and brings it online. Note that as the driver
9257  * implements the minimum PM requirements to a power-aware driver's PM for
9258  * suspend/resume -- all the possible PM messages (SUSPEND, HIBERNATE, FREEZE)
9259  * to the suspend() method call will be treated as SUSPEND and the driver
9260  * will fully reinitialize its device during resume() method call, the device
9261  * will be set to PCI_D0 directly in PCI config space before restoring the
9262  * state.
9263  *
9264  * Return code
9265  *      0 - driver suspended the device
9266  *      Error otherwise
9267  **/
9268 static int
9269 lpfc_pci_resume_one_s4(struct pci_dev *pdev)
9270 {
9271         struct Scsi_Host *shost = pci_get_drvdata(pdev);
9272         struct lpfc_hba *phba = ((struct lpfc_vport *)shost->hostdata)->phba;
9273         uint32_t intr_mode;
9274         int error;
9275
9276         lpfc_printf_log(phba, KERN_INFO, LOG_INIT,
9277                         "0292 PCI device Power Management resume.\n");
9278
9279         /* Restore device state from PCI config space */
9280         pci_set_power_state(pdev, PCI_D0);
9281         pci_restore_state(pdev);
9282
9283         /*
9284          * As the new kernel behavior of pci_restore_state() API call clears
9285          * device saved_state flag, need to save the restored state again.
9286          */
9287         pci_save_state(pdev);
9288
9289         if (pdev->is_busmaster)
9290                 pci_set_master(pdev);
9291
9292          /* Startup the kernel thread for this host adapter. */
9293         phba->worker_thread = kthread_run(lpfc_do_work, phba,
9294                                         "lpfc_worker_%d", phba->brd_no);
9295         if (IS_ERR(phba->worker_thread)) {
9296                 error = PTR_ERR(phba->worker_thread);
9297                 lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
9298                                 "0293 PM resume failed to start worker "
9299                                 "thread: error=x%x.\n", error);
9300                 return error;
9301         }
9302
9303         /* Configure and enable interrupt */
9304         intr_mode = lpfc_sli4_enable_intr(phba, phba->intr_mode);
9305         if (intr_mode == LPFC_INTR_ERROR) {
9306                 lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
9307                                 "0294 PM resume Failed to enable interrupt\n");
9308                 return -EIO;
9309         } else
9310                 phba->intr_mode = intr_mode;
9311
9312         /* Restart HBA and bring it online */
9313         lpfc_sli_brdrestart(phba);
9314         lpfc_online(phba);
9315
9316         /* Log the current active interrupt mode */
9317         lpfc_log_intr_mode(phba, phba->intr_mode);
9318
9319         return 0;
9320 }
9321
9322 /**
9323  * lpfc_sli4_prep_dev_for_recover - Prepare SLI4 device for pci slot recover
9324  * @phba: pointer to lpfc hba data structure.
9325  *
9326  * This routine is called to prepare the SLI4 device for PCI slot recover. It
9327  * aborts all the outstanding SCSI I/Os to the pci device.
9328  **/
9329 static void
9330 lpfc_sli4_prep_dev_for_recover(struct lpfc_hba *phba)
9331 {
9332         struct lpfc_sli *psli = &phba->sli;
9333         struct lpfc_sli_ring  *pring;
9334
9335         lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
9336                         "2828 PCI channel I/O abort preparing for recovery\n");
9337         /*
9338          * There may be errored I/Os through HBA, abort all I/Os on txcmplq
9339          * and let the SCSI mid-layer to retry them to recover.
9340          */
9341         pring = &psli->ring[psli->fcp_ring];
9342         lpfc_sli_abort_iocb_ring(phba, pring);
9343 }
9344
9345 /**
9346  * lpfc_sli4_prep_dev_for_reset - Prepare SLI4 device for pci slot reset
9347  * @phba: pointer to lpfc hba data structure.
9348  *
9349  * This routine is called to prepare the SLI4 device for PCI slot reset. It
9350  * disables the device interrupt and pci device, and aborts the internal FCP
9351  * pending I/Os.
9352  **/
9353 static void
9354 lpfc_sli4_prep_dev_for_reset(struct lpfc_hba *phba)
9355 {
9356         lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
9357                         "2826 PCI channel disable preparing for reset\n");
9358
9359         /* Block any management I/Os to the device */
9360         lpfc_block_mgmt_io(phba);
9361
9362         /* Block all SCSI devices' I/Os on the host */
9363         lpfc_scsi_dev_block(phba);
9364
9365         /* stop all timers */
9366         lpfc_stop_hba_timers(phba);
9367
9368         /* Disable interrupt and pci device */
9369         lpfc_sli4_disable_intr(phba);
9370         pci_disable_device(phba->pcidev);
9371
9372         /* Flush all driver's outstanding SCSI I/Os as we are to reset */
9373         lpfc_sli_flush_fcp_rings(phba);
9374 }
9375
9376 /**
9377  * lpfc_sli4_prep_dev_for_perm_failure - Prepare SLI4 dev for pci slot disable
9378  * @phba: pointer to lpfc hba data structure.
9379  *
9380  * This routine is called to prepare the SLI4 device for PCI slot permanently
9381  * disabling. It blocks the SCSI transport layer traffic and flushes the FCP
9382  * pending I/Os.
9383  **/
9384 static void
9385 lpfc_sli4_prep_dev_for_perm_failure(struct lpfc_hba *phba)
9386 {
9387         lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
9388                         "2827 PCI channel permanent disable for failure\n");
9389
9390         /* Block all SCSI devices' I/Os on the host */
9391         lpfc_scsi_dev_block(phba);
9392
9393         /* stop all timers */
9394         lpfc_stop_hba_timers(phba);
9395
9396         /* Clean up all driver's outstanding SCSI I/Os */
9397         lpfc_sli_flush_fcp_rings(phba);
9398 }
9399
9400 /**
9401  * lpfc_io_error_detected_s4 - Method for handling PCI I/O error to SLI-4 device
9402  * @pdev: pointer to PCI device.
9403  * @state: the current PCI connection state.
9404  *
9405  * This routine is called from the PCI subsystem for error handling to device
9406  * with SLI-4 interface spec. This function is called by the PCI subsystem
9407  * after a PCI bus error affecting this device has been detected. When this
9408  * function is invoked, it will need to stop all the I/Os and interrupt(s)
9409  * to the device. Once that is done, it will return PCI_ERS_RESULT_NEED_RESET
9410  * for the PCI subsystem to perform proper recovery as desired.
9411  *
9412  * Return codes
9413  *      PCI_ERS_RESULT_NEED_RESET - need to reset before recovery
9414  *      PCI_ERS_RESULT_DISCONNECT - device could not be recovered
9415  **/
9416 static pci_ers_result_t
9417 lpfc_io_error_detected_s4(struct pci_dev *pdev, pci_channel_state_t state)
9418 {
9419         struct Scsi_Host *shost = pci_get_drvdata(pdev);
9420         struct lpfc_hba *phba = ((struct lpfc_vport *)shost->hostdata)->phba;
9421
9422         switch (state) {
9423         case pci_channel_io_normal:
9424                 /* Non-fatal error, prepare for recovery */
9425                 lpfc_sli4_prep_dev_for_recover(phba);
9426                 return PCI_ERS_RESULT_CAN_RECOVER;
9427         case pci_channel_io_frozen:
9428                 /* Fatal error, prepare for slot reset */
9429                 lpfc_sli4_prep_dev_for_reset(phba);
9430                 return PCI_ERS_RESULT_NEED_RESET;
9431         case pci_channel_io_perm_failure:
9432                 /* Permanent failure, prepare for device down */
9433                 lpfc_sli4_prep_dev_for_perm_failure(phba);
9434                 return PCI_ERS_RESULT_DISCONNECT;
9435         default:
9436                 /* Unknown state, prepare and request slot reset */
9437                 lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
9438                                 "2825 Unknown PCI error state: x%x\n", state);
9439                 lpfc_sli4_prep_dev_for_reset(phba);
9440                 return PCI_ERS_RESULT_NEED_RESET;
9441         }
9442 }
9443
9444 /**
9445  * lpfc_io_slot_reset_s4 - Method for restart PCI SLI-4 device from scratch
9446  * @pdev: pointer to PCI device.
9447  *
9448  * This routine is called from the PCI subsystem for error handling to device
9449  * with SLI-4 interface spec. It is called after PCI bus has been reset to
9450  * restart the PCI card from scratch, as if from a cold-boot. During the
9451  * PCI subsystem error recovery, after the driver returns
9452  * PCI_ERS_RESULT_NEED_RESET, the PCI subsystem will perform proper error
9453  * recovery and then call this routine before calling the .resume method to
9454  * recover the device. This function will initialize the HBA device, enable
9455  * the interrupt, but it will just put the HBA to offline state without
9456  * passing any I/O traffic.
9457  *
9458  * Return codes
9459  *      PCI_ERS_RESULT_RECOVERED - the device has been recovered
9460  *      PCI_ERS_RESULT_DISCONNECT - device could not be recovered
9461  */
9462 static pci_ers_result_t
9463 lpfc_io_slot_reset_s4(struct pci_dev *pdev)
9464 {
9465         struct Scsi_Host *shost = pci_get_drvdata(pdev);
9466         struct lpfc_hba *phba = ((struct lpfc_vport *)shost->hostdata)->phba;
9467         struct lpfc_sli *psli = &phba->sli;
9468         uint32_t intr_mode;
9469
9470         dev_printk(KERN_INFO, &pdev->dev, "recovering from a slot reset.\n");
9471         if (pci_enable_device_mem(pdev)) {
9472                 printk(KERN_ERR "lpfc: Cannot re-enable "
9473                         "PCI device after reset.\n");
9474                 return PCI_ERS_RESULT_DISCONNECT;
9475         }
9476
9477         pci_restore_state(pdev);
9478         if (pdev->is_busmaster)
9479                 pci_set_master(pdev);
9480
9481         spin_lock_irq(&phba->hbalock);
9482         psli->sli_flag &= ~LPFC_SLI_ACTIVE;
9483         spin_unlock_irq(&phba->hbalock);
9484
9485         /* Configure and enable interrupt */
9486         intr_mode = lpfc_sli4_enable_intr(phba, phba->intr_mode);
9487         if (intr_mode == LPFC_INTR_ERROR) {
9488                 lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
9489                                 "2824 Cannot re-enable interrupt after "
9490                                 "slot reset.\n");
9491                 return PCI_ERS_RESULT_DISCONNECT;
9492         } else
9493                 phba->intr_mode = intr_mode;
9494
9495         /* Log the current active interrupt mode */
9496         lpfc_log_intr_mode(phba, phba->intr_mode);
9497
9498         return PCI_ERS_RESULT_RECOVERED;
9499 }
9500
9501 /**
9502  * lpfc_io_resume_s4 - Method for resuming PCI I/O operation to SLI-4 device
9503  * @pdev: pointer to PCI device
9504  *
9505  * This routine is called from the PCI subsystem for error handling to device
9506  * with SLI-4 interface spec. It is called when kernel error recovery tells
9507  * the lpfc driver that it is ok to resume normal PCI operation after PCI bus
9508  * error recovery. After this call, traffic can start to flow from this device
9509  * again.
9510  **/
9511 static void
9512 lpfc_io_resume_s4(struct pci_dev *pdev)
9513 {
9514         struct Scsi_Host *shost = pci_get_drvdata(pdev);
9515         struct lpfc_hba *phba = ((struct lpfc_vport *)shost->hostdata)->phba;
9516
9517         /*
9518          * In case of slot reset, as function reset is performed through
9519          * mailbox command which needs DMA to be enabled, this operation
9520          * has to be moved to the io resume phase. Taking device offline
9521          * will perform the necessary cleanup.
9522          */
9523         if (!(phba->sli.sli_flag & LPFC_SLI_ACTIVE)) {
9524                 /* Perform device reset */
9525                 lpfc_offline_prep(phba);
9526                 lpfc_offline(phba);
9527                 lpfc_sli_brdrestart(phba);
9528                 /* Bring the device back online */
9529                 lpfc_online(phba);
9530         }
9531
9532         /* Clean up Advanced Error Reporting (AER) if needed */
9533         if (phba->hba_flag & HBA_AER_ENABLED)
9534                 pci_cleanup_aer_uncorrect_error_status(pdev);
9535 }
9536
9537 /**
9538  * lpfc_pci_probe_one - lpfc PCI probe func to reg dev to PCI subsystem
9539  * @pdev: pointer to PCI device
9540  * @pid: pointer to PCI device identifier
9541  *
9542  * This routine is to be registered to the kernel's PCI subsystem. When an
9543  * Emulex HBA device is presented on PCI bus, the kernel PCI subsystem looks
9544  * at PCI device-specific information of the device and driver to see if the
9545  * driver state that it can support this kind of device. If the match is
9546  * successful, the driver core invokes this routine. This routine dispatches
9547  * the action to the proper SLI-3 or SLI-4 device probing routine, which will
9548  * do all the initialization that it needs to do to handle the HBA device
9549  * properly.
9550  *
9551  * Return code
9552  *      0 - driver can claim the device
9553  *      negative value - driver can not claim the device
9554  **/
9555 static int __devinit
9556 lpfc_pci_probe_one(struct pci_dev *pdev, const struct pci_device_id *pid)
9557 {
9558         int rc;
9559         struct lpfc_sli_intf intf;
9560
9561         if (pci_read_config_dword(pdev, LPFC_SLI_INTF, &intf.word0))
9562                 return -ENODEV;
9563
9564         if ((bf_get(lpfc_sli_intf_valid, &intf) == LPFC_SLI_INTF_VALID) &&
9565             (bf_get(lpfc_sli_intf_slirev, &intf) == LPFC_SLI_INTF_REV_SLI4))
9566                 rc = lpfc_pci_probe_one_s4(pdev, pid);
9567         else
9568                 rc = lpfc_pci_probe_one_s3(pdev, pid);
9569
9570         return rc;
9571 }
9572
9573 /**
9574  * lpfc_pci_remove_one - lpfc PCI func to unreg dev from PCI subsystem
9575  * @pdev: pointer to PCI device
9576  *
9577  * This routine is to be registered to the kernel's PCI subsystem. When an
9578  * Emulex HBA is removed from PCI bus, the driver core invokes this routine.
9579  * This routine dispatches the action to the proper SLI-3 or SLI-4 device
9580  * remove routine, which will perform all the necessary cleanup for the
9581  * device to be removed from the PCI subsystem properly.
9582  **/
9583 static void __devexit
9584 lpfc_pci_remove_one(struct pci_dev *pdev)
9585 {
9586         struct Scsi_Host *shost = pci_get_drvdata(pdev);
9587         struct lpfc_hba *phba = ((struct lpfc_vport *)shost->hostdata)->phba;
9588
9589         switch (phba->pci_dev_grp) {
9590         case LPFC_PCI_DEV_LP:
9591                 lpfc_pci_remove_one_s3(pdev);
9592                 break;
9593         case LPFC_PCI_DEV_OC:
9594                 lpfc_pci_remove_one_s4(pdev);
9595                 break;
9596         default:
9597                 lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
9598                                 "1424 Invalid PCI device group: 0x%x\n",
9599                                 phba->pci_dev_grp);
9600                 break;
9601         }
9602         return;
9603 }
9604
9605 /**
9606  * lpfc_pci_suspend_one - lpfc PCI func to suspend dev for power management
9607  * @pdev: pointer to PCI device
9608  * @msg: power management message
9609  *
9610  * This routine is to be registered to the kernel's PCI subsystem to support
9611  * system Power Management (PM). When PM invokes this method, it dispatches
9612  * the action to the proper SLI-3 or SLI-4 device suspend routine, which will
9613  * suspend the device.
9614  *
9615  * Return code
9616  *      0 - driver suspended the device
9617  *      Error otherwise
9618  **/
9619 static int
9620 lpfc_pci_suspend_one(struct pci_dev *pdev, pm_message_t msg)
9621 {
9622         struct Scsi_Host *shost = pci_get_drvdata(pdev);
9623         struct lpfc_hba *phba = ((struct lpfc_vport *)shost->hostdata)->phba;
9624         int rc = -ENODEV;
9625
9626         switch (phba->pci_dev_grp) {
9627         case LPFC_PCI_DEV_LP:
9628                 rc = lpfc_pci_suspend_one_s3(pdev, msg);
9629                 break;
9630         case LPFC_PCI_DEV_OC:
9631                 rc = lpfc_pci_suspend_one_s4(pdev, msg);
9632                 break;
9633         default:
9634                 lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
9635                                 "1425 Invalid PCI device group: 0x%x\n",
9636                                 phba->pci_dev_grp);
9637                 break;
9638         }
9639         return rc;
9640 }
9641
9642 /**
9643  * lpfc_pci_resume_one - lpfc PCI func to resume dev for power management
9644  * @pdev: pointer to PCI device
9645  *
9646  * This routine is to be registered to the kernel's PCI subsystem to support
9647  * system Power Management (PM). When PM invokes this method, it dispatches
9648  * the action to the proper SLI-3 or SLI-4 device resume routine, which will
9649  * resume the device.
9650  *
9651  * Return code
9652  *      0 - driver suspended the device
9653  *      Error otherwise
9654  **/
9655 static int
9656 lpfc_pci_resume_one(struct pci_dev *pdev)
9657 {
9658         struct Scsi_Host *shost = pci_get_drvdata(pdev);
9659         struct lpfc_hba *phba = ((struct lpfc_vport *)shost->hostdata)->phba;
9660         int rc = -ENODEV;
9661
9662         switch (phba->pci_dev_grp) {
9663         case LPFC_PCI_DEV_LP:
9664                 rc = lpfc_pci_resume_one_s3(pdev);
9665                 break;
9666         case LPFC_PCI_DEV_OC:
9667                 rc = lpfc_pci_resume_one_s4(pdev);
9668                 break;
9669         default:
9670                 lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
9671                                 "1426 Invalid PCI device group: 0x%x\n",
9672                                 phba->pci_dev_grp);
9673                 break;
9674         }
9675         return rc;
9676 }
9677
9678 /**
9679  * lpfc_io_error_detected - lpfc method for handling PCI I/O error
9680  * @pdev: pointer to PCI device.
9681  * @state: the current PCI connection state.
9682  *
9683  * This routine is registered to the PCI subsystem for error handling. This
9684  * function is called by the PCI subsystem after a PCI bus error affecting
9685  * this device has been detected. When this routine is invoked, it dispatches
9686  * the action to the proper SLI-3 or SLI-4 device error detected handling
9687  * routine, which will perform the proper error detected operation.
9688  *
9689  * Return codes
9690  *      PCI_ERS_RESULT_NEED_RESET - need to reset before recovery
9691  *      PCI_ERS_RESULT_DISCONNECT - device could not be recovered
9692  **/
9693 static pci_ers_result_t
9694 lpfc_io_error_detected(struct pci_dev *pdev, pci_channel_state_t state)
9695 {
9696         struct Scsi_Host *shost = pci_get_drvdata(pdev);
9697         struct lpfc_hba *phba = ((struct lpfc_vport *)shost->hostdata)->phba;
9698         pci_ers_result_t rc = PCI_ERS_RESULT_DISCONNECT;
9699
9700         switch (phba->pci_dev_grp) {
9701         case LPFC_PCI_DEV_LP:
9702                 rc = lpfc_io_error_detected_s3(pdev, state);
9703                 break;
9704         case LPFC_PCI_DEV_OC:
9705                 rc = lpfc_io_error_detected_s4(pdev, state);
9706                 break;
9707         default:
9708                 lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
9709                                 "1427 Invalid PCI device group: 0x%x\n",
9710                                 phba->pci_dev_grp);
9711                 break;
9712         }
9713         return rc;
9714 }
9715
9716 /**
9717  * lpfc_io_slot_reset - lpfc method for restart PCI dev from scratch
9718  * @pdev: pointer to PCI device.
9719  *
9720  * This routine is registered to the PCI subsystem for error handling. This
9721  * function is called after PCI bus has been reset to restart the PCI card
9722  * from scratch, as if from a cold-boot. When this routine is invoked, it
9723  * dispatches the action to the proper SLI-3 or SLI-4 device reset handling
9724  * routine, which will perform the proper device reset.
9725  *
9726  * Return codes
9727  *      PCI_ERS_RESULT_RECOVERED - the device has been recovered
9728  *      PCI_ERS_RESULT_DISCONNECT - device could not be recovered
9729  **/
9730 static pci_ers_result_t
9731 lpfc_io_slot_reset(struct pci_dev *pdev)
9732 {
9733         struct Scsi_Host *shost = pci_get_drvdata(pdev);
9734         struct lpfc_hba *phba = ((struct lpfc_vport *)shost->hostdata)->phba;
9735         pci_ers_result_t rc = PCI_ERS_RESULT_DISCONNECT;
9736
9737         switch (phba->pci_dev_grp) {
9738         case LPFC_PCI_DEV_LP:
9739                 rc = lpfc_io_slot_reset_s3(pdev);
9740                 break;
9741         case LPFC_PCI_DEV_OC:
9742                 rc = lpfc_io_slot_reset_s4(pdev);
9743                 break;
9744         default:
9745                 lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
9746                                 "1428 Invalid PCI device group: 0x%x\n",
9747                                 phba->pci_dev_grp);
9748                 break;
9749         }
9750         return rc;
9751 }
9752
9753 /**
9754  * lpfc_io_resume - lpfc method for resuming PCI I/O operation
9755  * @pdev: pointer to PCI device
9756  *
9757  * This routine is registered to the PCI subsystem for error handling. It
9758  * is called when kernel error recovery tells the lpfc driver that it is
9759  * OK to resume normal PCI operation after PCI bus error recovery. When
9760  * this routine is invoked, it dispatches the action to the proper SLI-3
9761  * or SLI-4 device io_resume routine, which will resume the device operation.
9762  **/
9763 static void
9764 lpfc_io_resume(struct pci_dev *pdev)
9765 {
9766         struct Scsi_Host *shost = pci_get_drvdata(pdev);
9767         struct lpfc_hba *phba = ((struct lpfc_vport *)shost->hostdata)->phba;
9768
9769         switch (phba->pci_dev_grp) {
9770         case LPFC_PCI_DEV_LP:
9771                 lpfc_io_resume_s3(pdev);
9772                 break;
9773         case LPFC_PCI_DEV_OC:
9774                 lpfc_io_resume_s4(pdev);
9775                 break;
9776         default:
9777                 lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
9778                                 "1429 Invalid PCI device group: 0x%x\n",
9779                                 phba->pci_dev_grp);
9780                 break;
9781         }
9782         return;
9783 }
9784
9785 static struct pci_device_id lpfc_id_table[] = {
9786         {PCI_VENDOR_ID_EMULEX, PCI_DEVICE_ID_VIPER,
9787                 PCI_ANY_ID, PCI_ANY_ID, },
9788         {PCI_VENDOR_ID_EMULEX, PCI_DEVICE_ID_FIREFLY,
9789                 PCI_ANY_ID, PCI_ANY_ID, },
9790         {PCI_VENDOR_ID_EMULEX, PCI_DEVICE_ID_THOR,
9791                 PCI_ANY_ID, PCI_ANY_ID, },
9792         {PCI_VENDOR_ID_EMULEX, PCI_DEVICE_ID_PEGASUS,
9793                 PCI_ANY_ID, PCI_ANY_ID, },
9794         {PCI_VENDOR_ID_EMULEX, PCI_DEVICE_ID_CENTAUR,
9795                 PCI_ANY_ID, PCI_ANY_ID, },
9796         {PCI_VENDOR_ID_EMULEX, PCI_DEVICE_ID_DRAGONFLY,
9797                 PCI_ANY_ID, PCI_ANY_ID, },
9798         {PCI_VENDOR_ID_EMULEX, PCI_DEVICE_ID_SUPERFLY,
9799                 PCI_ANY_ID, PCI_ANY_ID, },
9800         {PCI_VENDOR_ID_EMULEX, PCI_DEVICE_ID_RFLY,
9801                 PCI_ANY_ID, PCI_ANY_ID, },
9802         {PCI_VENDOR_ID_EMULEX, PCI_DEVICE_ID_PFLY,
9803                 PCI_ANY_ID, PCI_ANY_ID, },
9804         {PCI_VENDOR_ID_EMULEX, PCI_DEVICE_ID_NEPTUNE,
9805                 PCI_ANY_ID, PCI_ANY_ID, },
9806         {PCI_VENDOR_ID_EMULEX, PCI_DEVICE_ID_NEPTUNE_SCSP,
9807                 PCI_ANY_ID, PCI_ANY_ID, },
9808         {PCI_VENDOR_ID_EMULEX, PCI_DEVICE_ID_NEPTUNE_DCSP,
9809                 PCI_ANY_ID, PCI_ANY_ID, },
9810         {PCI_VENDOR_ID_EMULEX, PCI_DEVICE_ID_HELIOS,
9811                 PCI_ANY_ID, PCI_ANY_ID, },
9812         {PCI_VENDOR_ID_EMULEX, PCI_DEVICE_ID_HELIOS_SCSP,
9813                 PCI_ANY_ID, PCI_ANY_ID, },
9814         {PCI_VENDOR_ID_EMULEX, PCI_DEVICE_ID_HELIOS_DCSP,
9815                 PCI_ANY_ID, PCI_ANY_ID, },
9816         {PCI_VENDOR_ID_EMULEX, PCI_DEVICE_ID_BMID,
9817                 PCI_ANY_ID, PCI_ANY_ID, },
9818         {PCI_VENDOR_ID_EMULEX, PCI_DEVICE_ID_BSMB,
9819                 PCI_ANY_ID, PCI_ANY_ID, },
9820         {PCI_VENDOR_ID_EMULEX, PCI_DEVICE_ID_ZEPHYR,
9821                 PCI_ANY_ID, PCI_ANY_ID, },
9822         {PCI_VENDOR_ID_EMULEX, PCI_DEVICE_ID_HORNET,
9823                 PCI_ANY_ID, PCI_ANY_ID, },
9824         {PCI_VENDOR_ID_EMULEX, PCI_DEVICE_ID_ZEPHYR_SCSP,
9825                 PCI_ANY_ID, PCI_ANY_ID, },
9826         {PCI_VENDOR_ID_EMULEX, PCI_DEVICE_ID_ZEPHYR_DCSP,
9827                 PCI_ANY_ID, PCI_ANY_ID, },
9828         {PCI_VENDOR_ID_EMULEX, PCI_DEVICE_ID_ZMID,
9829                 PCI_ANY_ID, PCI_ANY_ID, },
9830         {PCI_VENDOR_ID_EMULEX, PCI_DEVICE_ID_ZSMB,
9831                 PCI_ANY_ID, PCI_ANY_ID, },
9832         {PCI_VENDOR_ID_EMULEX, PCI_DEVICE_ID_TFLY,
9833                 PCI_ANY_ID, PCI_ANY_ID, },
9834         {PCI_VENDOR_ID_EMULEX, PCI_DEVICE_ID_LP101,
9835                 PCI_ANY_ID, PCI_ANY_ID, },
9836         {PCI_VENDOR_ID_EMULEX, PCI_DEVICE_ID_LP10000S,
9837                 PCI_ANY_ID, PCI_ANY_ID, },
9838         {PCI_VENDOR_ID_EMULEX, PCI_DEVICE_ID_LP11000S,
9839                 PCI_ANY_ID, PCI_ANY_ID, },
9840         {PCI_VENDOR_ID_EMULEX, PCI_DEVICE_ID_LPE11000S,
9841                 PCI_ANY_ID, PCI_ANY_ID, },
9842         {PCI_VENDOR_ID_EMULEX, PCI_DEVICE_ID_SAT,
9843                 PCI_ANY_ID, PCI_ANY_ID, },
9844         {PCI_VENDOR_ID_EMULEX, PCI_DEVICE_ID_SAT_MID,
9845                 PCI_ANY_ID, PCI_ANY_ID, },
9846         {PCI_VENDOR_ID_EMULEX, PCI_DEVICE_ID_SAT_SMB,
9847                 PCI_ANY_ID, PCI_ANY_ID, },
9848         {PCI_VENDOR_ID_EMULEX, PCI_DEVICE_ID_SAT_DCSP,
9849                 PCI_ANY_ID, PCI_ANY_ID, },
9850         {PCI_VENDOR_ID_EMULEX, PCI_DEVICE_ID_SAT_SCSP,
9851                 PCI_ANY_ID, PCI_ANY_ID, },
9852         {PCI_VENDOR_ID_EMULEX, PCI_DEVICE_ID_SAT_S,
9853                 PCI_ANY_ID, PCI_ANY_ID, },
9854         {PCI_VENDOR_ID_EMULEX, PCI_DEVICE_ID_PROTEUS_VF,
9855                 PCI_ANY_ID, PCI_ANY_ID, },
9856         {PCI_VENDOR_ID_EMULEX, PCI_DEVICE_ID_PROTEUS_PF,
9857                 PCI_ANY_ID, PCI_ANY_ID, },
9858         {PCI_VENDOR_ID_EMULEX, PCI_DEVICE_ID_PROTEUS_S,
9859                 PCI_ANY_ID, PCI_ANY_ID, },
9860         {PCI_VENDOR_ID_SERVERENGINE, PCI_DEVICE_ID_TIGERSHARK,
9861                 PCI_ANY_ID, PCI_ANY_ID, },
9862         {PCI_VENDOR_ID_SERVERENGINE, PCI_DEVICE_ID_TOMCAT,
9863                 PCI_ANY_ID, PCI_ANY_ID, },
9864         {PCI_VENDOR_ID_EMULEX, PCI_DEVICE_ID_FALCON,
9865                 PCI_ANY_ID, PCI_ANY_ID, },
9866         {PCI_VENDOR_ID_EMULEX, PCI_DEVICE_ID_BALIUS,
9867                 PCI_ANY_ID, PCI_ANY_ID, },
9868         {PCI_VENDOR_ID_EMULEX, PCI_DEVICE_ID_LANCER_FC,
9869                 PCI_ANY_ID, PCI_ANY_ID, },
9870         {PCI_VENDOR_ID_EMULEX, PCI_DEVICE_ID_LANCER_FCOE,
9871                 PCI_ANY_ID, PCI_ANY_ID, },
9872         {PCI_VENDOR_ID_EMULEX, PCI_DEVICE_ID_LANCER_FC_VF,
9873                 PCI_ANY_ID, PCI_ANY_ID, },
9874         {PCI_VENDOR_ID_EMULEX, PCI_DEVICE_ID_LANCER_FCOE_VF,
9875                 PCI_ANY_ID, PCI_ANY_ID, },
9876         { 0 }
9877 };
9878
9879 MODULE_DEVICE_TABLE(pci, lpfc_id_table);
9880
9881 static struct pci_error_handlers lpfc_err_handler = {
9882         .error_detected = lpfc_io_error_detected,
9883         .slot_reset = lpfc_io_slot_reset,
9884         .resume = lpfc_io_resume,
9885 };
9886
9887 static struct pci_driver lpfc_driver = {
9888         .name           = LPFC_DRIVER_NAME,
9889         .id_table       = lpfc_id_table,
9890         .probe          = lpfc_pci_probe_one,
9891         .remove         = __devexit_p(lpfc_pci_remove_one),
9892         .suspend        = lpfc_pci_suspend_one,
9893         .resume         = lpfc_pci_resume_one,
9894         .err_handler    = &lpfc_err_handler,
9895 };
9896
9897 /**
9898  * lpfc_init - lpfc module initialization routine
9899  *
9900  * This routine is to be invoked when the lpfc module is loaded into the
9901  * kernel. The special kernel macro module_init() is used to indicate the
9902  * role of this routine to the kernel as lpfc module entry point.
9903  *
9904  * Return codes
9905  *   0 - successful
9906  *   -ENOMEM - FC attach transport failed
9907  *   all others - failed
9908  */
9909 static int __init
9910 lpfc_init(void)
9911 {
9912         int error = 0;
9913
9914         printk(LPFC_MODULE_DESC "\n");
9915         printk(LPFC_COPYRIGHT "\n");
9916
9917         if (lpfc_enable_npiv) {
9918                 lpfc_transport_functions.vport_create = lpfc_vport_create;
9919                 lpfc_transport_functions.vport_delete = lpfc_vport_delete;
9920         }
9921         lpfc_transport_template =
9922                                 fc_attach_transport(&lpfc_transport_functions);
9923         if (lpfc_transport_template == NULL)
9924                 return -ENOMEM;
9925         if (lpfc_enable_npiv) {
9926                 lpfc_vport_transport_template =
9927                         fc_attach_transport(&lpfc_vport_transport_functions);
9928                 if (lpfc_vport_transport_template == NULL) {
9929                         fc_release_transport(lpfc_transport_template);
9930                         return -ENOMEM;
9931                 }
9932         }
9933         error = pci_register_driver(&lpfc_driver);
9934         if (error) {
9935                 fc_release_transport(lpfc_transport_template);
9936                 if (lpfc_enable_npiv)
9937                         fc_release_transport(lpfc_vport_transport_template);
9938         }
9939
9940         return error;
9941 }
9942
9943 /**
9944  * lpfc_exit - lpfc module removal routine
9945  *
9946  * This routine is invoked when the lpfc module is removed from the kernel.
9947  * The special kernel macro module_exit() is used to indicate the role of
9948  * this routine to the kernel as lpfc module exit point.
9949  */
9950 static void __exit
9951 lpfc_exit(void)
9952 {
9953         pci_unregister_driver(&lpfc_driver);
9954         fc_release_transport(lpfc_transport_template);
9955         if (lpfc_enable_npiv)
9956                 fc_release_transport(lpfc_vport_transport_template);
9957         if (_dump_buf_data) {
9958                 printk(KERN_ERR "9062 BLKGRD: freeing %lu pages for "
9959                                 "_dump_buf_data at 0x%p\n",
9960                                 (1L << _dump_buf_data_order), _dump_buf_data);
9961                 free_pages((unsigned long)_dump_buf_data, _dump_buf_data_order);
9962         }
9963
9964         if (_dump_buf_dif) {
9965                 printk(KERN_ERR "9049 BLKGRD: freeing %lu pages for "
9966                                 "_dump_buf_dif at 0x%p\n",
9967                                 (1L << _dump_buf_dif_order), _dump_buf_dif);
9968                 free_pages((unsigned long)_dump_buf_dif, _dump_buf_dif_order);
9969         }
9970 }
9971
9972 module_init(lpfc_init);
9973 module_exit(lpfc_exit);
9974 MODULE_LICENSE("GPL");
9975 MODULE_DESCRIPTION(LPFC_MODULE_DESC);
9976 MODULE_AUTHOR("Emulex Corporation - tech.support@emulex.com");
9977 MODULE_VERSION("0:" LPFC_DRIVER_VERSION);