drivers/scsi/lpfc/lpfc_debugfs.c

   1 /*******************************************************************
   2  * This file is part of the Emulex Linux Device Driver for         *
   3  * Fibre Channel Host Bus Adapters.                                *
   4  * Copyright (C) 2007-2012 Emulex.  All rights reserved.           *
   5  * EMULEX and SLI are trademarks of Emulex.                        *
   6  * www.emulex.com                                                  *
   7  *                                                                 *
   8  * This program is free software; you can redistribute it and/or   *
   9  * modify it under the terms of version 2 of the GNU General       *
  10  * Public License as published by the Free Software Foundation.    *
  11  * This program is distributed in the hope that it will be useful. *
  12  * ALL EXPRESS OR IMPLIED CONDITIONS, REPRESENTATIONS AND          *
  13  * WARRANTIES, INCLUDING ANY IMPLIED WARRANTY OF MERCHANTABILITY,  *
  14  * FITNESS FOR A PARTICULAR PURPOSE, OR NON-INFRINGEMENT, ARE      *
  15  * DISCLAIMED, EXCEPT TO THE EXTENT THAT SUCH DISCLAIMERS ARE HELD *
  16  * TO BE LEGALLY INVALID.  See the GNU General Public License for  *
  17  * more details, a copy of which can be found in the file COPYING  *
  18  * included with this package.                                     *
  19  *******************************************************************/
  20
  21 #include <linux/blkdev.h>
  22 #include <linux/delay.h>
  23 #include <linux/module.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/slab.h>
  29 #include <linux/pci.h>
  30 #include <linux/spinlock.h>
  31 #include <linux/ctype.h>
  32
  33 #include <scsi/scsi.h>
  34 #include <scsi/scsi_device.h>
  35 #include <scsi/scsi_host.h>
  36 #include <scsi/scsi_transport_fc.h>
  37
  38 #include "lpfc_hw4.h"
  39 #include "lpfc_hw.h"
  40 #include "lpfc_sli.h"
  41 #include "lpfc_sli4.h"
  42 #include "lpfc_nl.h"
  43 #include "lpfc_disc.h"
  44 #include "lpfc_scsi.h"
  45 #include "lpfc.h"
  46 #include "lpfc_logmsg.h"
  47 #include "lpfc_crtn.h"
  48 #include "lpfc_vport.h"
  49 #include "lpfc_version.h"
  50 #include "lpfc_compat.h"
  51 #include "lpfc_debugfs.h"
  52 #include "lpfc_bsg.h"
  53
  54 #ifdef CONFIG_SCSI_LPFC_DEBUG_FS
  55 /*
  56  * debugfs interface
  57  *
  58  * To access this interface the user should:
  59  * # mount -t debugfs none /sys/kernel/debug
  60  *
  61  * The lpfc debugfs directory hierarchy is:
  62  * /sys/kernel/debug/lpfc/fnX/vportY
  63  * where X is the lpfc hba function unique_id
  64  * where Y is the vport VPI on that hba
  65  *
  66  * Debugging services available per vport:
  67  * discovery_trace
  68  * This is an ACSII readable file that contains a trace of the last
  69  * lpfc_debugfs_max_disc_trc events that happened on a specific vport.
  70  * See lpfc_debugfs.h for different categories of  discovery events.
  71  * To enable the discovery trace, the following module parameters must be set:
  72  * lpfc_debugfs_enable=1         Turns on lpfc debugfs filesystem support
  73  * lpfc_debugfs_max_disc_trc=X   Where X is the event trace depth for
  74  *                               EACH vport. X MUST also be a power of 2.
  75  * lpfc_debugfs_mask_disc_trc=Y  Where Y is an event mask as defined in
  76  *                               lpfc_debugfs.h .
  77  *
  78  * slow_ring_trace
  79  * This is an ACSII readable file that contains a trace of the last
  80  * lpfc_debugfs_max_slow_ring_trc events that happened on a specific HBA.
  81  * To enable the slow ring trace, the following module parameters must be set:
  82  * lpfc_debugfs_enable=1         Turns on lpfc debugfs filesystem support
  83  * lpfc_debugfs_max_slow_ring_trc=X   Where X is the event trace depth for
  84  *                               the HBA. X MUST also be a power of 2.
  85  */
  86 static int lpfc_debugfs_enable = 1;
  87 module_param(lpfc_debugfs_enable, int, S_IRUGO);
  88 MODULE_PARM_DESC(lpfc_debugfs_enable, "Enable debugfs services");
  89
  90 /* This MUST be a power of 2 */
  91 static int lpfc_debugfs_max_disc_trc;
  92 module_param(lpfc_debugfs_max_disc_trc, int, S_IRUGO);
  93 MODULE_PARM_DESC(lpfc_debugfs_max_disc_trc,
  94         "Set debugfs discovery trace depth");
  95
  96 /* This MUST be a power of 2 */
  97 static int lpfc_debugfs_max_slow_ring_trc;
  98 module_param(lpfc_debugfs_max_slow_ring_trc, int, S_IRUGO);
  99 MODULE_PARM_DESC(lpfc_debugfs_max_slow_ring_trc,
 100         "Set debugfs slow ring trace depth");
 101
 102 static int lpfc_debugfs_mask_disc_trc;
 103 module_param(lpfc_debugfs_mask_disc_trc, int, S_IRUGO);
 104 MODULE_PARM_DESC(lpfc_debugfs_mask_disc_trc,
 105         "Set debugfs discovery trace mask");
 106
 107 #include <linux/debugfs.h>
 108
 109 static atomic_t lpfc_debugfs_seq_trc_cnt = ATOMIC_INIT(0);
 110 static unsigned long lpfc_debugfs_start_time = 0L;
 111
 112 /* iDiag */
 113 static struct lpfc_idiag idiag;
 114
 115 /**
 116  * lpfc_debugfs_disc_trc_data - Dump discovery logging to a buffer
 117  * @vport: The vport to gather the log info from.
 118  * @buf: The buffer to dump log into.
 119  * @size: The maximum amount of data to process.
 120  *
 121  * Description:
 122  * This routine gathers the lpfc discovery debugfs data from the @vport and
 123  * dumps it to @buf up to @size number of bytes. It will start at the next entry
 124  * in the log and process the log until the end of the buffer. Then it will
 125  * gather from the beginning of the log and process until the current entry.
 126  *
 127  * Notes:
 128  * Discovery logging will be disabled while while this routine dumps the log.
 129  *
 130  * Return Value:
 131  * This routine returns the amount of bytes that were dumped into @buf and will
 132  * not exceed @size.
 133  **/
 134 static int
 135 lpfc_debugfs_disc_trc_data(struct lpfc_vport *vport, char *buf, int size)
 136 {
 137         int i, index, len, enable;
 138         uint32_t ms;
 139         struct lpfc_debugfs_trc *dtp;
 140         char *buffer;
 141
 142         buffer = kmalloc(LPFC_DEBUG_TRC_ENTRY_SIZE, GFP_KERNEL);
 143         if (!buffer)
 144                 return 0;
 145
 146         enable = lpfc_debugfs_enable;
 147         lpfc_debugfs_enable = 0;
 148
 149         len = 0;
 150         index = (atomic_read(&vport->disc_trc_cnt) + 1) &
 151                 (lpfc_debugfs_max_disc_trc - 1);
 152         for (i = index; i < lpfc_debugfs_max_disc_trc; i++) {
 153                 dtp = vport->disc_trc + i;
 154                 if (!dtp->fmt)
 155                         continue;
 156                 ms = jiffies_to_msecs(dtp->jif - lpfc_debugfs_start_time);
 157                 snprintf(buffer,
 158                         LPFC_DEBUG_TRC_ENTRY_SIZE, "%010d:%010d ms:%s\n",
 159                         dtp->seq_cnt, ms, dtp->fmt);
 160                 len +=  snprintf(buf+len, size-len, buffer,
 161                         dtp->data1, dtp->data2, dtp->data3);
 162         }
 163         for (i = 0; i < index; i++) {
 164                 dtp = vport->disc_trc + i;
 165                 if (!dtp->fmt)
 166                         continue;
 167                 ms = jiffies_to_msecs(dtp->jif - lpfc_debugfs_start_time);
 168                 snprintf(buffer,
 169                         LPFC_DEBUG_TRC_ENTRY_SIZE, "%010d:%010d ms:%s\n",
 170                         dtp->seq_cnt, ms, dtp->fmt);
 171                 len +=  snprintf(buf+len, size-len, buffer,
 172                         dtp->data1, dtp->data2, dtp->data3);
 173         }
 174
 175         lpfc_debugfs_enable = enable;
 176         kfree(buffer);
 177
 178         return len;
 179 }
 180
 181 /**
 182  * lpfc_debugfs_slow_ring_trc_data - Dump slow ring logging to a buffer
 183  * @phba: The HBA to gather the log info from.
 184  * @buf: The buffer to dump log into.
 185  * @size: The maximum amount of data to process.
 186  *
 187  * Description:
 188  * This routine gathers the lpfc slow ring debugfs data from the @phba and
 189  * dumps it to @buf up to @size number of bytes. It will start at the next entry
 190  * in the log and process the log until the end of the buffer. Then it will
 191  * gather from the beginning of the log and process until the current entry.
 192  *
 193  * Notes:
 194  * Slow ring logging will be disabled while while this routine dumps the log.
 195  *
 196  * Return Value:
 197  * This routine returns the amount of bytes that were dumped into @buf and will
 198  * not exceed @size.
 199  **/
 200 static int
 201 lpfc_debugfs_slow_ring_trc_data(struct lpfc_hba *phba, char *buf, int size)
 202 {
 203         int i, index, len, enable;
 204         uint32_t ms;
 205         struct lpfc_debugfs_trc *dtp;
 206         char *buffer;
 207
 208         buffer = kmalloc(LPFC_DEBUG_TRC_ENTRY_SIZE, GFP_KERNEL);
 209         if (!buffer)
 210                 return 0;
 211
 212         enable = lpfc_debugfs_enable;
 213         lpfc_debugfs_enable = 0;
 214
 215         len = 0;
 216         index = (atomic_read(&phba->slow_ring_trc_cnt) + 1) &
 217                 (lpfc_debugfs_max_slow_ring_trc - 1);
 218         for (i = index; i < lpfc_debugfs_max_slow_ring_trc; i++) {
 219                 dtp = phba->slow_ring_trc + i;
 220                 if (!dtp->fmt)
 221                         continue;
 222                 ms = jiffies_to_msecs(dtp->jif - lpfc_debugfs_start_time);
 223                 snprintf(buffer,
 224                         LPFC_DEBUG_TRC_ENTRY_SIZE, "%010d:%010d ms:%s\n",
 225                         dtp->seq_cnt, ms, dtp->fmt);
 226                 len +=  snprintf(buf+len, size-len, buffer,
 227                         dtp->data1, dtp->data2, dtp->data3);
 228         }
 229         for (i = 0; i < index; i++) {
 230                 dtp = phba->slow_ring_trc + i;
 231                 if (!dtp->fmt)
 232                         continue;
 233                 ms = jiffies_to_msecs(dtp->jif - lpfc_debugfs_start_time);
 234                 snprintf(buffer,
 235                         LPFC_DEBUG_TRC_ENTRY_SIZE, "%010d:%010d ms:%s\n",
 236                         dtp->seq_cnt, ms, dtp->fmt);
 237                 len +=  snprintf(buf+len, size-len, buffer,
 238                         dtp->data1, dtp->data2, dtp->data3);
 239         }
 240
 241         lpfc_debugfs_enable = enable;
 242         kfree(buffer);
 243
 244         return len;
 245 }
 246
 247 static int lpfc_debugfs_last_hbq = -1;
 248
 249 /**
 250  * lpfc_debugfs_hbqinfo_data - Dump host buffer queue info to a buffer
 251  * @phba: The HBA to gather host buffer info from.
 252  * @buf: The buffer to dump log into.
 253  * @size: The maximum amount of data to process.
 254  *
 255  * Description:
 256  * This routine dumps the host buffer queue info from the @phba to @buf up to
 257  * @size number of bytes. A header that describes the current hbq state will be
 258  * dumped to @buf first and then info on each hbq entry will be dumped to @buf
 259  * until @size bytes have been dumped or all the hbq info has been dumped.
 260  *
 261  * Notes:
 262  * This routine will rotate through each configured HBQ each time called.
 263  *
 264  * Return Value:
 265  * This routine returns the amount of bytes that were dumped into @buf and will
 266  * not exceed @size.
 267  **/
 268 static int
 269 lpfc_debugfs_hbqinfo_data(struct lpfc_hba *phba, char *buf, int size)
 270 {
 271         int len = 0;
 272         int cnt, i, j, found, posted, low;
 273         uint32_t phys, raw_index, getidx;
 274         struct lpfc_hbq_init *hip;
 275         struct hbq_s *hbqs;
 276         struct lpfc_hbq_entry *hbqe;
 277         struct lpfc_dmabuf *d_buf;
 278         struct hbq_dmabuf *hbq_buf;
 279
 280         if (phba->sli_rev != 3)
 281                 return 0;
 282         cnt = LPFC_HBQINFO_SIZE;
 283         spin_lock_irq(&phba->hbalock);
 284
 285         /* toggle between multiple hbqs, if any */
 286         i = lpfc_sli_hbq_count();
 287         if (i > 1) {
 288                  lpfc_debugfs_last_hbq++;
 289                  if (lpfc_debugfs_last_hbq >= i)
 290                         lpfc_debugfs_last_hbq = 0;
 291         }
 292         else
 293                 lpfc_debugfs_last_hbq = 0;
 294
 295         i = lpfc_debugfs_last_hbq;
 296
 297         len +=  snprintf(buf+len, size-len, "HBQ %d Info\n", i);
 298
 299         hbqs =  &phba->hbqs[i];
 300         posted = 0;
 301         list_for_each_entry(d_buf, &hbqs->hbq_buffer_list, list)
 302                 posted++;
 303
 304         hip =  lpfc_hbq_defs[i];
 305         len +=  snprintf(buf+len, size-len,
 306                 "idx:%d prof:%d rn:%d bufcnt:%d icnt:%d acnt:%d posted %d\n",
 307                 hip->hbq_index, hip->profile, hip->rn,
 308                 hip->buffer_count, hip->init_count, hip->add_count, posted);
 309
 310         raw_index = phba->hbq_get[i];
 311         getidx = le32_to_cpu(raw_index);
 312         len +=  snprintf(buf+len, size-len,
 313                 "entrys:%d bufcnt:%d Put:%d nPut:%d localGet:%d hbaGet:%d\n",
 314                 hbqs->entry_count, hbqs->buffer_count, hbqs->hbqPutIdx,
 315                 hbqs->next_hbqPutIdx, hbqs->local_hbqGetIdx, getidx);
 316
 317         hbqe = (struct lpfc_hbq_entry *) phba->hbqs[i].hbq_virt;
 318         for (j=0; j<hbqs->entry_count; j++) {
 319                 len +=  snprintf(buf+len, size-len,
 320                         "%03d: %08x %04x %05x ", j,
 321                         le32_to_cpu(hbqe->bde.addrLow),
 322                         le32_to_cpu(hbqe->bde.tus.w),
 323                         le32_to_cpu(hbqe->buffer_tag));
 324                 i = 0;
 325                 found = 0;
 326
 327                 /* First calculate if slot has an associated posted buffer */
 328                 low = hbqs->hbqPutIdx - posted;
 329                 if (low >= 0) {
 330                         if ((j >= hbqs->hbqPutIdx) || (j < low)) {
 331                                 len +=  snprintf(buf+len, size-len, "Unused\n");
 332                                 goto skipit;
 333                         }
 334                 }
 335                 else {
 336                         if ((j >= hbqs->hbqPutIdx) &&
 337                                 (j < (hbqs->entry_count+low))) {
 338                                 len +=  snprintf(buf+len, size-len, "Unused\n");
 339                                 goto skipit;
 340                         }
 341                 }
 342
 343                 /* Get the Buffer info for the posted buffer */
 344                 list_for_each_entry(d_buf, &hbqs->hbq_buffer_list, list) {
 345                         hbq_buf = container_of(d_buf, struct hbq_dmabuf, dbuf);
 346                         phys = ((uint64_t)hbq_buf->dbuf.phys & 0xffffffff);
 347                         if (phys == le32_to_cpu(hbqe->bde.addrLow)) {
 348                                 len +=  snprintf(buf+len, size-len,
 349                                         "Buf%d: %p %06x\n", i,
 350                                         hbq_buf->dbuf.virt, hbq_buf->tag);
 351                                 found = 1;
 352                                 break;
 353                         }
 354                         i++;
 355                 }
 356                 if (!found) {
 357                         len +=  snprintf(buf+len, size-len, "No DMAinfo?\n");
 358                 }
 359 skipit:
 360                 hbqe++;
 361                 if (len > LPFC_HBQINFO_SIZE - 54)
 362                         break;
 363         }
 364         spin_unlock_irq(&phba->hbalock);
 365         return len;
 366 }
 367
 368 static int lpfc_debugfs_last_hba_slim_off;
 369
 370 /**
 371  * lpfc_debugfs_dumpHBASlim_data - Dump HBA SLIM info to a buffer
 372  * @phba: The HBA to gather SLIM info from.
 373  * @buf: The buffer to dump log into.
 374  * @size: The maximum amount of data to process.
 375  *
 376  * Description:
 377  * This routine dumps the current contents of HBA SLIM for the HBA associated
 378  * with @phba to @buf up to @size bytes of data. This is the raw HBA SLIM data.
 379  *
 380  * Notes:
 381  * This routine will only dump up to 1024 bytes of data each time called and
 382  * should be called multiple times to dump the entire HBA SLIM.
 383  *
 384  * Return Value:
 385  * This routine returns the amount of bytes that were dumped into @buf and will
 386  * not exceed @size.
 387  **/
 388 static int
 389 lpfc_debugfs_dumpHBASlim_data(struct lpfc_hba *phba, char *buf, int size)
 390 {
 391         int len = 0;
 392         int i, off;
 393         uint32_t *ptr;
 394         char *buffer;
 395
 396         buffer = kmalloc(1024, GFP_KERNEL);
 397         if (!buffer)
 398                 return 0;
 399
 400         off = 0;
 401         spin_lock_irq(&phba->hbalock);
 402
 403         len +=  snprintf(buf+len, size-len, "HBA SLIM\n");
 404         lpfc_memcpy_from_slim(buffer,
 405                 phba->MBslimaddr + lpfc_debugfs_last_hba_slim_off, 1024);
 406
 407         ptr = (uint32_t *)&buffer[0];
 408         off = lpfc_debugfs_last_hba_slim_off;
 409
 410         /* Set it up for the next time */
 411         lpfc_debugfs_last_hba_slim_off += 1024;
 412         if (lpfc_debugfs_last_hba_slim_off >= 4096)
 413                 lpfc_debugfs_last_hba_slim_off = 0;
 414
 415         i = 1024;
 416         while (i > 0) {
 417                 len +=  snprintf(buf+len, size-len,
 418                 "%08x: %08x %08x %08x %08x %08x %08x %08x %08x\n",
 419                 off, *ptr, *(ptr+1), *(ptr+2), *(ptr+3), *(ptr+4),
 420                 *(ptr+5), *(ptr+6), *(ptr+7));
 421                 ptr += 8;
 422                 i -= (8 * sizeof(uint32_t));
 423                 off += (8 * sizeof(uint32_t));
 424         }
 425
 426         spin_unlock_irq(&phba->hbalock);
 427         kfree(buffer);
 428
 429         return len;
 430 }
 431
 432 /**
 433  * lpfc_debugfs_dumpHostSlim_data - Dump host SLIM info to a buffer
 434  * @phba: The HBA to gather Host SLIM info from.
 435  * @buf: The buffer to dump log into.
 436  * @size: The maximum amount of data to process.
 437  *
 438  * Description:
 439  * This routine dumps the current contents of host SLIM for the host associated
 440  * with @phba to @buf up to @size bytes of data. The dump will contain the
 441  * Mailbox, PCB, Rings, and Registers that are located in host memory.
 442  *
 443  * Return Value:
 444  * This routine returns the amount of bytes that were dumped into @buf and will
 445  * not exceed @size.
 446  **/
 447 static int
 448 lpfc_debugfs_dumpHostSlim_data(struct lpfc_hba *phba, char *buf, int size)
 449 {
 450         int len = 0;
 451         int i, off;
 452         uint32_t word0, word1, word2, word3;
 453         uint32_t *ptr;
 454         struct lpfc_pgp *pgpp;
 455         struct lpfc_sli *psli = &phba->sli;
 456         struct lpfc_sli_ring *pring;
 457
 458         off = 0;
 459         spin_lock_irq(&phba->hbalock);
 460
 461         len +=  snprintf(buf+len, size-len, "SLIM Mailbox\n");
 462         ptr = (uint32_t *)phba->slim2p.virt;
 463         i = sizeof(MAILBOX_t);
 464         while (i > 0) {
 465                 len +=  snprintf(buf+len, size-len,
 466                 "%08x: %08x %08x %08x %08x %08x %08x %08x %08x\n",
 467                 off, *ptr, *(ptr+1), *(ptr+2), *(ptr+3), *(ptr+4),
 468                 *(ptr+5), *(ptr+6), *(ptr+7));
 469                 ptr += 8;
 470                 i -= (8 * sizeof(uint32_t));
 471                 off += (8 * sizeof(uint32_t));
 472         }
 473
 474         len +=  snprintf(buf+len, size-len, "SLIM PCB\n");
 475         ptr = (uint32_t *)phba->pcb;
 476         i = sizeof(PCB_t);
 477         while (i > 0) {
 478                 len +=  snprintf(buf+len, size-len,
 479                 "%08x: %08x %08x %08x %08x %08x %08x %08x %08x\n",
 480                 off, *ptr, *(ptr+1), *(ptr+2), *(ptr+3), *(ptr+4),
 481                 *(ptr+5), *(ptr+6), *(ptr+7));
 482                 ptr += 8;
 483                 i -= (8 * sizeof(uint32_t));
 484                 off += (8 * sizeof(uint32_t));
 485         }
 486
 487         for (i = 0; i < 4; i++) {
 488                 pgpp = &phba->port_gp[i];
 489                 pring = &psli->ring[i];
 490                 len +=  snprintf(buf+len, size-len,
 491                                  "Ring %d: CMD GetInx:%d (Max:%d Next:%d "
 492                                  "Local:%d flg:x%x)  RSP PutInx:%d Max:%d\n",
 493                                  i, pgpp->cmdGetInx, pring->sli.sli3.numCiocb,
 494                                  pring->sli.sli3.next_cmdidx,
 495                                  pring->sli.sli3.local_getidx,
 496                                  pring->flag, pgpp->rspPutInx,
 497                                  pring->sli.sli3.numRiocb);
 498         }
 499
 500         if (phba->sli_rev <= LPFC_SLI_REV3) {
 501                 word0 = readl(phba->HAregaddr);
 502                 word1 = readl(phba->CAregaddr);
 503                 word2 = readl(phba->HSregaddr);
 504                 word3 = readl(phba->HCregaddr);
 505                 len +=  snprintf(buf+len, size-len, "HA:%08x CA:%08x HS:%08x "
 506                                  "HC:%08x\n", word0, word1, word2, word3);
 507         }
 508         spin_unlock_irq(&phba->hbalock);
 509         return len;
 510 }
 511
 512 /**
 513  * lpfc_debugfs_nodelist_data - Dump target node list to a buffer
 514  * @vport: The vport to gather target node info from.
 515  * @buf: The buffer to dump log into.
 516  * @size: The maximum amount of data to process.
 517  *
 518  * Description:
 519  * This routine dumps the current target node list associated with @vport to
 520  * @buf up to @size bytes of data. Each node entry in the dump will contain a
 521  * node state, DID, WWPN, WWNN, RPI, flags, type, and other useful fields.
 522  *
 523  * Return Value:
 524  * This routine returns the amount of bytes that were dumped into @buf and will
 525  * not exceed @size.
 526  **/
 527 static int
 528 lpfc_debugfs_nodelist_data(struct lpfc_vport *vport, char *buf, int size)
 529 {
 530         int len = 0;
 531         int cnt;
 532         struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
 533         struct lpfc_nodelist *ndlp;
 534         unsigned char *statep, *name;
 535
 536         cnt = (LPFC_NODELIST_SIZE / LPFC_NODELIST_ENTRY_SIZE);
 537
 538         spin_lock_irq(shost->host_lock);
 539         list_for_each_entry(ndlp, &vport->fc_nodes, nlp_listp) {
 540                 if (!cnt) {
 541                         len +=  snprintf(buf+len, size-len,
 542                                 "Missing Nodelist Entries\n");
 543                         break;
 544                 }
 545                 cnt--;
 546                 switch (ndlp->nlp_state) {
 547                 case NLP_STE_UNUSED_NODE:
 548                         statep = "UNUSED";
 549                         break;
 550                 case NLP_STE_PLOGI_ISSUE:
 551                         statep = "PLOGI ";
 552                         break;
 553                 case NLP_STE_ADISC_ISSUE:
 554                         statep = "ADISC ";
 555                         break;
 556                 case NLP_STE_REG_LOGIN_ISSUE:
 557                         statep = "REGLOG";
 558                         break;
 559                 case NLP_STE_PRLI_ISSUE:
 560                         statep = "PRLI  ";
 561                         break;
 562                 case NLP_STE_LOGO_ISSUE:
 563                         statep = "LOGO  ";
 564                         break;
 565                 case NLP_STE_UNMAPPED_NODE:
 566                         statep = "UNMAP ";
 567                         break;
 568                 case NLP_STE_MAPPED_NODE:
 569                         statep = "MAPPED";
 570                         break;
 571                 case NLP_STE_NPR_NODE:
 572                         statep = "NPR   ";
 573                         break;
 574                 default:
 575                         statep = "UNKNOWN";
 576                 }
 577                 len +=  snprintf(buf+len, size-len, "%s DID:x%06x ",
 578                         statep, ndlp->nlp_DID);
 579                 name = (unsigned char *)&ndlp->nlp_portname;
 580                 len +=  snprintf(buf+len, size-len,
 581                         "WWPN %02x:%02x:%02x:%02x:%02x:%02x:%02x:%02x ",
 582                         *name, *(name+1), *(name+2), *(name+3),
 583                         *(name+4), *(name+5), *(name+6), *(name+7));
 584                 name = (unsigned char *)&ndlp->nlp_nodename;
 585                 len +=  snprintf(buf+len, size-len,
 586                         "WWNN %02x:%02x:%02x:%02x:%02x:%02x:%02x:%02x ",
 587                         *name, *(name+1), *(name+2), *(name+3),
 588                         *(name+4), *(name+5), *(name+6), *(name+7));
 589                 if (ndlp->nlp_flag & NLP_RPI_REGISTERED)
 590                         len +=  snprintf(buf+len, size-len, "RPI:%03d ",
 591                                 ndlp->nlp_rpi);
 592                 else
 593                         len +=  snprintf(buf+len, size-len, "RPI:none ");
 594                 len +=  snprintf(buf+len, size-len, "flag:x%08x ",
 595                         ndlp->nlp_flag);
 596                 if (!ndlp->nlp_type)
 597                         len +=  snprintf(buf+len, size-len, "UNKNOWN_TYPE ");
 598                 if (ndlp->nlp_type & NLP_FC_NODE)
 599                         len +=  snprintf(buf+len, size-len, "FC_NODE ");
 600                 if (ndlp->nlp_type & NLP_FABRIC)
 601                         len +=  snprintf(buf+len, size-len, "FABRIC ");
 602                 if (ndlp->nlp_type & NLP_FCP_TARGET)
 603                         len +=  snprintf(buf+len, size-len, "FCP_TGT sid:%d ",
 604                                 ndlp->nlp_sid);
 605                 if (ndlp->nlp_type & NLP_FCP_INITIATOR)
 606                         len +=  snprintf(buf+len, size-len, "FCP_INITIATOR ");
 607                 len += snprintf(buf+len, size-len, "usgmap:%x ",
 608                         ndlp->nlp_usg_map);
 609                 len += snprintf(buf+len, size-len, "refcnt:%x",
 610                         atomic_read(&ndlp->kref.refcount));
 611                 len +=  snprintf(buf+len, size-len, "\n");
 612         }
 613         spin_unlock_irq(shost->host_lock);
 614         return len;
 615 }
 616 #endif
 617
 618 /**
 619  * lpfc_debugfs_disc_trc - Store discovery trace log
 620  * @vport: The vport to associate this trace string with for retrieval.
 621  * @mask: Log entry classification.
 622  * @fmt: Format string to be displayed when dumping the log.
 623  * @data1: 1st data parameter to be applied to @fmt.
 624  * @data2: 2nd data parameter to be applied to @fmt.
 625  * @data3: 3rd data parameter to be applied to @fmt.
 626  *
 627  * Description:
 628  * This routine is used by the driver code to add a debugfs log entry to the
 629  * discovery trace buffer associated with @vport. Only entries with a @mask that
 630  * match the current debugfs discovery mask will be saved. Entries that do not
 631  * match will be thrown away. @fmt, @data1, @data2, and @data3 are used like
 632  * printf when displaying the log.
 633  **/
 634 inline void
 635 lpfc_debugfs_disc_trc(struct lpfc_vport *vport, int mask, char *fmt,
 636         uint32_t data1, uint32_t data2, uint32_t data3)
 637 {
 638 #ifdef CONFIG_SCSI_LPFC_DEBUG_FS
 639         struct lpfc_debugfs_trc *dtp;
 640         int index;
 641
 642         if (!(lpfc_debugfs_mask_disc_trc & mask))
 643                 return;
 644
 645         if (!lpfc_debugfs_enable || !lpfc_debugfs_max_disc_trc ||
 646                 !vport || !vport->disc_trc)
 647                 return;
 648
 649         index = atomic_inc_return(&vport->disc_trc_cnt) &
 650                 (lpfc_debugfs_max_disc_trc - 1);
 651         dtp = vport->disc_trc + index;
 652         dtp->fmt = fmt;
 653         dtp->data1 = data1;
 654         dtp->data2 = data2;
 655         dtp->data3 = data3;
 656         dtp->seq_cnt = atomic_inc_return(&lpfc_debugfs_seq_trc_cnt);
 657         dtp->jif = jiffies;
 658 #endif
 659         return;
 660 }
 661
 662 /**
 663  * lpfc_debugfs_slow_ring_trc - Store slow ring trace log
 664  * @phba: The phba to associate this trace string with for retrieval.
 665  * @fmt: Format string to be displayed when dumping the log.
 666  * @data1: 1st data parameter to be applied to @fmt.
 667  * @data2: 2nd data parameter to be applied to @fmt.
 668  * @data3: 3rd data parameter to be applied to @fmt.
 669  *
 670  * Description:
 671  * This routine is used by the driver code to add a debugfs log entry to the
 672  * discovery trace buffer associated with @vport. @fmt, @data1, @data2, and
 673  * @data3 are used like printf when displaying the log.
 674  **/
 675 inline void
 676 lpfc_debugfs_slow_ring_trc(struct lpfc_hba *phba, char *fmt,
 677         uint32_t data1, uint32_t data2, uint32_t data3)
 678 {
 679 #ifdef CONFIG_SCSI_LPFC_DEBUG_FS
 680         struct lpfc_debugfs_trc *dtp;
 681         int index;
 682
 683         if (!lpfc_debugfs_enable || !lpfc_debugfs_max_slow_ring_trc ||
 684                 !phba || !phba->slow_ring_trc)
 685                 return;
 686
 687         index = atomic_inc_return(&phba->slow_ring_trc_cnt) &
 688                 (lpfc_debugfs_max_slow_ring_trc - 1);
 689         dtp = phba->slow_ring_trc + index;
 690         dtp->fmt = fmt;
 691         dtp->data1 = data1;
 692         dtp->data2 = data2;
 693         dtp->data3 = data3;
 694         dtp->seq_cnt = atomic_inc_return(&lpfc_debugfs_seq_trc_cnt);
 695         dtp->jif = jiffies;
 696 #endif
 697         return;
 698 }
 699
 700 #ifdef CONFIG_SCSI_LPFC_DEBUG_FS
 701 /**
 702  * lpfc_debugfs_disc_trc_open - Open the discovery trace log
 703  * @inode: The inode pointer that contains a vport pointer.
 704  * @file: The file pointer to attach the log output.
 705  *
 706  * Description:
 707  * This routine is the entry point for the debugfs open file operation. It gets
 708  * the vport from the i_private field in @inode, allocates the necessary buffer
 709  * for the log, fills the buffer from the in-memory log for this vport, and then
 710  * returns a pointer to that log in the private_data field in @file.
 711  *
 712  * Returns:
 713  * This function returns zero if successful. On error it will return an negative
 714  * error value.
 715  **/
 716 static int
 717 lpfc_debugfs_disc_trc_open(struct inode *inode, struct file *file)
 718 {
 719         struct lpfc_vport *vport = inode->i_private;
 720         struct lpfc_debug *debug;
 721         int size;
 722         int rc = -ENOMEM;
 723
 724         if (!lpfc_debugfs_max_disc_trc) {
 725                  rc = -ENOSPC;
 726                 goto out;
 727         }
 728
 729         debug = kmalloc(sizeof(*debug), GFP_KERNEL);
 730         if (!debug)
 731                 goto out;
 732
 733         /* Round to page boundary */
 734         size =  (lpfc_debugfs_max_disc_trc * LPFC_DEBUG_TRC_ENTRY_SIZE);
 735         size = PAGE_ALIGN(size);
 736
 737         debug->buffer = kmalloc(size, GFP_KERNEL);
 738         if (!debug->buffer) {
 739                 kfree(debug);
 740                 goto out;
 741         }
 742
 743         debug->len = lpfc_debugfs_disc_trc_data(vport, debug->buffer, size);
 744         file->private_data = debug;
 745
 746         rc = 0;
 747 out:
 748         return rc;
 749 }
 750
 751 /**
 752  * lpfc_debugfs_slow_ring_trc_open - Open the Slow Ring trace log
 753  * @inode: The inode pointer that contains a vport pointer.
 754  * @file: The file pointer to attach the log output.
 755  *
 756  * Description:
 757  * This routine is the entry point for the debugfs open file operation. It gets
 758  * the vport from the i_private field in @inode, allocates the necessary buffer
 759  * for the log, fills the buffer from the in-memory log for this vport, and then
 760  * returns a pointer to that log in the private_data field in @file.
 761  *
 762  * Returns:
 763  * This function returns zero if successful. On error it will return an negative
 764  * error value.
 765  **/
 766 static int
 767 lpfc_debugfs_slow_ring_trc_open(struct inode *inode, struct file *file)
 768 {
 769         struct lpfc_hba *phba = inode->i_private;
 770         struct lpfc_debug *debug;
 771         int size;
 772         int rc = -ENOMEM;
 773
 774         if (!lpfc_debugfs_max_slow_ring_trc) {
 775                  rc = -ENOSPC;
 776                 goto out;
 777         }
 778
 779         debug = kmalloc(sizeof(*debug), GFP_KERNEL);
 780         if (!debug)
 781                 goto out;
 782
 783         /* Round to page boundary */
 784         size =  (lpfc_debugfs_max_slow_ring_trc * LPFC_DEBUG_TRC_ENTRY_SIZE);
 785         size = PAGE_ALIGN(size);
 786
 787         debug->buffer = kmalloc(size, GFP_KERNEL);
 788         if (!debug->buffer) {
 789                 kfree(debug);
 790                 goto out;
 791         }
 792
 793         debug->len = lpfc_debugfs_slow_ring_trc_data(phba, debug->buffer, size);
 794         file->private_data = debug;
 795
 796         rc = 0;
 797 out:
 798         return rc;
 799 }
 800
 801 /**
 802  * lpfc_debugfs_hbqinfo_open - Open the hbqinfo debugfs buffer
 803  * @inode: The inode pointer that contains a vport pointer.
 804  * @file: The file pointer to attach the log output.
 805  *
 806  * Description:
 807  * This routine is the entry point for the debugfs open file operation. It gets
 808  * the vport from the i_private field in @inode, allocates the necessary buffer
 809  * for the log, fills the buffer from the in-memory log for this vport, and then
 810  * returns a pointer to that log in the private_data field in @file.
 811  *
 812  * Returns:
 813  * This function returns zero if successful. On error it will return an negative
 814  * error value.
 815  **/
 816 static int
 817 lpfc_debugfs_hbqinfo_open(struct inode *inode, struct file *file)
 818 {
 819         struct lpfc_hba *phba = inode->i_private;
 820         struct lpfc_debug *debug;
 821         int rc = -ENOMEM;
 822
 823         debug = kmalloc(sizeof(*debug), GFP_KERNEL);
 824         if (!debug)
 825                 goto out;
 826
 827         /* Round to page boundary */
 828         debug->buffer = kmalloc(LPFC_HBQINFO_SIZE, GFP_KERNEL);
 829         if (!debug->buffer) {
 830                 kfree(debug);
 831                 goto out;
 832         }
 833
 834         debug->len = lpfc_debugfs_hbqinfo_data(phba, debug->buffer,
 835                 LPFC_HBQINFO_SIZE);
 836         file->private_data = debug;
 837
 838         rc = 0;
 839 out:
 840         return rc;
 841 }
 842
 843 /**
 844  * lpfc_debugfs_dumpHBASlim_open - Open the Dump HBA SLIM debugfs buffer
 845  * @inode: The inode pointer that contains a vport pointer.
 846  * @file: The file pointer to attach the log output.
 847  *
 848  * Description:
 849  * This routine is the entry point for the debugfs open file operation. It gets
 850  * the vport from the i_private field in @inode, allocates the necessary buffer
 851  * for the log, fills the buffer from the in-memory log for this vport, and then
 852  * returns a pointer to that log in the private_data field in @file.
 853  *
 854  * Returns:
 855  * This function returns zero if successful. On error it will return an negative
 856  * error value.
 857  **/
 858 static int
 859 lpfc_debugfs_dumpHBASlim_open(struct inode *inode, struct file *file)
 860 {
 861         struct lpfc_hba *phba = inode->i_private;
 862         struct lpfc_debug *debug;
 863         int rc = -ENOMEM;
 864
 865         debug = kmalloc(sizeof(*debug), GFP_KERNEL);
 866         if (!debug)
 867                 goto out;
 868
 869         /* Round to page boundary */
 870         debug->buffer = kmalloc(LPFC_DUMPHBASLIM_SIZE, GFP_KERNEL);
 871         if (!debug->buffer) {
 872                 kfree(debug);
 873                 goto out;
 874         }
 875
 876         debug->len = lpfc_debugfs_dumpHBASlim_data(phba, debug->buffer,
 877                 LPFC_DUMPHBASLIM_SIZE);
 878         file->private_data = debug;
 879
 880         rc = 0;
 881 out:
 882         return rc;
 883 }
 884
 885 /**
 886  * lpfc_debugfs_dumpHostSlim_open - Open the Dump Host SLIM debugfs buffer
 887  * @inode: The inode pointer that contains a vport pointer.
 888  * @file: The file pointer to attach the log output.
 889  *
 890  * Description:
 891  * This routine is the entry point for the debugfs open file operation. It gets
 892  * the vport from the i_private field in @inode, allocates the necessary buffer
 893  * for the log, fills the buffer from the in-memory log for this vport, and then
 894  * returns a pointer to that log in the private_data field in @file.
 895  *
 896  * Returns:
 897  * This function returns zero if successful. On error it will return an negative
 898  * error value.
 899  **/
 900 static int
 901 lpfc_debugfs_dumpHostSlim_open(struct inode *inode, struct file *file)
 902 {
 903         struct lpfc_hba *phba = inode->i_private;
 904         struct lpfc_debug *debug;
 905         int rc = -ENOMEM;
 906
 907         debug = kmalloc(sizeof(*debug), GFP_KERNEL);
 908         if (!debug)
 909                 goto out;
 910
 911         /* Round to page boundary */
 912         debug->buffer = kmalloc(LPFC_DUMPHOSTSLIM_SIZE, GFP_KERNEL);
 913         if (!debug->buffer) {
 914                 kfree(debug);
 915                 goto out;
 916         }
 917
 918         debug->len = lpfc_debugfs_dumpHostSlim_data(phba, debug->buffer,
 919                 LPFC_DUMPHOSTSLIM_SIZE);
 920         file->private_data = debug;
 921
 922         rc = 0;
 923 out:
 924         return rc;
 925 }
 926
 927 static int
 928 lpfc_debugfs_dumpData_open(struct inode *inode, struct file *file)
 929 {
 930         struct lpfc_debug *debug;
 931         int rc = -ENOMEM;
 932
 933         if (!_dump_buf_data)
 934                 return -EBUSY;
 935
 936         debug = kmalloc(sizeof(*debug), GFP_KERNEL);
 937         if (!debug)
 938                 goto out;
 939
 940         /* Round to page boundary */
 941         printk(KERN_ERR "9059 BLKGRD:  %s: _dump_buf_data=0x%p\n",
 942                         __func__, _dump_buf_data);
 943         debug->buffer = _dump_buf_data;
 944         if (!debug->buffer) {
 945                 kfree(debug);
 946                 goto out;
 947         }
 948
 949         debug->len = (1 << _dump_buf_data_order) << PAGE_SHIFT;
 950         file->private_data = debug;
 951
 952         rc = 0;
 953 out:
 954         return rc;
 955 }
 956
 957 static int
 958 lpfc_debugfs_dumpDif_open(struct inode *inode, struct file *file)
 959 {
 960         struct lpfc_debug *debug;
 961         int rc = -ENOMEM;
 962
 963         if (!_dump_buf_dif)
 964                 return -EBUSY;
 965
 966         debug = kmalloc(sizeof(*debug), GFP_KERNEL);
 967         if (!debug)
 968                 goto out;
 969
 970         /* Round to page boundary */
 971         printk(KERN_ERR "9060 BLKGRD: %s: _dump_buf_dif=0x%p file=%s\n",
 972                 __func__, _dump_buf_dif, file->f_dentry->d_name.name);
 973         debug->buffer = _dump_buf_dif;
 974         if (!debug->buffer) {
 975                 kfree(debug);
 976                 goto out;
 977         }
 978
 979         debug->len = (1 << _dump_buf_dif_order) << PAGE_SHIFT;
 980         file->private_data = debug;
 981
 982         rc = 0;
 983 out:
 984         return rc;
 985 }
 986
 987 static ssize_t
 988 lpfc_debugfs_dumpDataDif_write(struct file *file, const char __user *buf,
 989                   size_t nbytes, loff_t *ppos)
 990 {
 991         /*
 992          * The Data/DIF buffers only save one failing IO
 993          * The write op is used as a reset mechanism after an IO has
 994          * already been saved to the next one can be saved
 995          */
 996         spin_lock(&_dump_buf_lock);
 997
 998         memset((void *)_dump_buf_data, 0,
 999                         ((1 << PAGE_SHIFT) << _dump_buf_data_order));
1000         memset((void *)_dump_buf_dif, 0,
1001                         ((1 << PAGE_SHIFT) << _dump_buf_dif_order));
1002
1003         _dump_buf_done = 0;
1004
1005         spin_unlock(&_dump_buf_lock);
1006
1007         return nbytes;
1008 }
1009
1010 static ssize_t
1011 lpfc_debugfs_dif_err_read(struct file *file, char __user *buf,
1012         size_t nbytes, loff_t *ppos)
1013 {
1014         struct dentry *dent = file->f_dentry;
1015         struct lpfc_hba *phba = file->private_data;
1016         char cbuf[32];
1017         uint64_t tmp = 0;
1018         int cnt = 0;
1019
1020         if (dent == phba->debug_writeGuard)
1021                 cnt = snprintf(cbuf, 32, "%u\n", phba->lpfc_injerr_wgrd_cnt);
1022         else if (dent == phba->debug_writeApp)
1023                 cnt = snprintf(cbuf, 32, "%u\n", phba->lpfc_injerr_wapp_cnt);
1024         else if (dent == phba->debug_writeRef)
1025                 cnt = snprintf(cbuf, 32, "%u\n", phba->lpfc_injerr_wref_cnt);
1026         else if (dent == phba->debug_readGuard)
1027                 cnt = snprintf(cbuf, 32, "%u\n", phba->lpfc_injerr_rgrd_cnt);
1028         else if (dent == phba->debug_readApp)
1029                 cnt = snprintf(cbuf, 32, "%u\n", phba->lpfc_injerr_rapp_cnt);
1030         else if (dent == phba->debug_readRef)
1031                 cnt = snprintf(cbuf, 32, "%u\n", phba->lpfc_injerr_rref_cnt);
1032         else if (dent == phba->debug_InjErrNPortID)
1033                 cnt = snprintf(cbuf, 32, "0x%06x\n", phba->lpfc_injerr_nportid);
1034         else if (dent == phba->debug_InjErrWWPN) {
1035                 memcpy(&tmp, &phba->lpfc_injerr_wwpn, sizeof(struct lpfc_name));
1036                 tmp = cpu_to_be64(tmp);
1037                 cnt = snprintf(cbuf, 32, "0x%016llx\n", tmp);
1038         } else if (dent == phba->debug_InjErrLBA) {
1039                 if (phba->lpfc_injerr_lba == (sector_t)(-1))
1040                         cnt = snprintf(cbuf, 32, "off\n");
1041                 else
1042                         cnt = snprintf(cbuf, 32, "0x%llx\n",
1043                                  (uint64_t) phba->lpfc_injerr_lba);
1044         } else
1045                 lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
1046                          "0547 Unknown debugfs error injection entry\n");
1047
1048         return simple_read_from_buffer(buf, nbytes, ppos, &cbuf, cnt);
1049 }
1050
1051 static ssize_t
1052 lpfc_debugfs_dif_err_write(struct file *file, const char __user *buf,
1053         size_t nbytes, loff_t *ppos)
1054 {
1055         struct dentry *dent = file->f_dentry;
1056         struct lpfc_hba *phba = file->private_data;
1057         char dstbuf[32];
1058         uint64_t tmp = 0;
1059         int size;
1060
1061         memset(dstbuf, 0, 32);
1062         size = (nbytes < 32) ? nbytes : 32;
1063         if (copy_from_user(dstbuf, buf, size))
1064                 return 0;
1065
1066         if (dent == phba->debug_InjErrLBA) {
1067                 if ((buf[0] == 'o') && (buf[1] == 'f') && (buf[2] == 'f'))
1068                         tmp = (uint64_t)(-1);
1069         }
1070
1071         if ((tmp == 0) && (kstrtoull(dstbuf, 0, &tmp)))
1072                 return 0;
1073
1074         if (dent == phba->debug_writeGuard)
1075                 phba->lpfc_injerr_wgrd_cnt = (uint32_t)tmp;
1076         else if (dent == phba->debug_writeApp)
1077                 phba->lpfc_injerr_wapp_cnt = (uint32_t)tmp;
1078         else if (dent == phba->debug_writeRef)
1079                 phba->lpfc_injerr_wref_cnt = (uint32_t)tmp;
1080         else if (dent == phba->debug_readGuard)
1081                 phba->lpfc_injerr_rgrd_cnt = (uint32_t)tmp;
1082         else if (dent == phba->debug_readApp)
1083                 phba->lpfc_injerr_rapp_cnt = (uint32_t)tmp;
1084         else if (dent == phba->debug_readRef)
1085                 phba->lpfc_injerr_rref_cnt = (uint32_t)tmp;
1086         else if (dent == phba->debug_InjErrLBA)
1087                 phba->lpfc_injerr_lba = (sector_t)tmp;
1088         else if (dent == phba->debug_InjErrNPortID)
1089                 phba->lpfc_injerr_nportid = (uint32_t)(tmp & Mask_DID);
1090         else if (dent == phba->debug_InjErrWWPN) {
1091                 tmp = cpu_to_be64(tmp);
1092                 memcpy(&phba->lpfc_injerr_wwpn, &tmp, sizeof(struct lpfc_name));
1093         } else
1094                 lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
1095                          "0548 Unknown debugfs error injection entry\n");
1096
1097         return nbytes;
1098 }
1099
1100 static int
1101 lpfc_debugfs_dif_err_release(struct inode *inode, struct file *file)
1102 {
1103         return 0;
1104 }
1105
1106 /**
1107  * lpfc_debugfs_nodelist_open - Open the nodelist debugfs file
1108  * @inode: The inode pointer that contains a vport pointer.
1109  * @file: The file pointer to attach the log output.
1110  *
1111  * Description:
1112  * This routine is the entry point for the debugfs open file operation. It gets
1113  * the vport from the i_private field in @inode, allocates the necessary buffer
1114  * for the log, fills the buffer from the in-memory log for this vport, and then
1115  * returns a pointer to that log in the private_data field in @file.
1116  *
1117  * Returns:
1118  * This function returns zero if successful. On error it will return an negative
1119  * error value.
1120  **/
1121 static int
1122 lpfc_debugfs_nodelist_open(struct inode *inode, struct file *file)
1123 {
1124         struct lpfc_vport *vport = inode->i_private;
1125         struct lpfc_debug *debug;
1126         int rc = -ENOMEM;
1127
1128         debug = kmalloc(sizeof(*debug), GFP_KERNEL);
1129         if (!debug)
1130                 goto out;
1131
1132         /* Round to page boundary */
1133         debug->buffer = kmalloc(LPFC_NODELIST_SIZE, GFP_KERNEL);
1134         if (!debug->buffer) {
1135                 kfree(debug);
1136                 goto out;
1137         }
1138
1139         debug->len = lpfc_debugfs_nodelist_data(vport, debug->buffer,
1140                 LPFC_NODELIST_SIZE);
1141         file->private_data = debug;
1142
1143         rc = 0;
1144 out:
1145         return rc;
1146 }
1147
1148 /**
1149  * lpfc_debugfs_lseek - Seek through a debugfs file
1150  * @file: The file pointer to seek through.
1151  * @off: The offset to seek to or the amount to seek by.
1152  * @whence: Indicates how to seek.
1153  *
1154  * Description:
1155  * This routine is the entry point for the debugfs lseek file operation. The
1156  * @whence parameter indicates whether @off is the offset to directly seek to,
1157  * or if it is a value to seek forward or reverse by. This function figures out
1158  * what the new offset of the debugfs file will be and assigns that value to the
1159  * f_pos field of @file.
1160  *
1161  * Returns:
1162  * This function returns the new offset if successful and returns a negative
1163  * error if unable to process the seek.
1164  **/
1165 static loff_t
1166 lpfc_debugfs_lseek(struct file *file, loff_t off, int whence)
1167 {
1168         struct lpfc_debug *debug = file->private_data;
1169         return fixed_size_llseek(file, off, whence, debug->len);
1170 }
1171
1172 /**
1173  * lpfc_debugfs_read - Read a debugfs file
1174  * @file: The file pointer to read from.
1175  * @buf: The buffer to copy the data to.
1176  * @nbytes: The number of bytes to read.
1177  * @ppos: The position in the file to start reading from.
1178  *
1179  * Description:
1180  * This routine reads data from from the buffer indicated in the private_data
1181  * field of @file. It will start reading at @ppos and copy up to @nbytes of
1182  * data to @buf.
1183  *
1184  * Returns:
1185  * This function returns the amount of data that was read (this could be less
1186  * than @nbytes if the end of the file was reached) or a negative error value.
1187  **/
1188 static ssize_t
1189 lpfc_debugfs_read(struct file *file, char __user *buf,
1190                   size_t nbytes, loff_t *ppos)
1191 {
1192         struct lpfc_debug *debug = file->private_data;
1193
1194         return simple_read_from_buffer(buf, nbytes, ppos, debug->buffer,
1195                                        debug->len);
1196 }
1197
1198 /**
1199  * lpfc_debugfs_release - Release the buffer used to store debugfs file data
1200  * @inode: The inode pointer that contains a vport pointer. (unused)
1201  * @file: The file pointer that contains the buffer to release.
1202  *
1203  * Description:
1204  * This routine frees the buffer that was allocated when the debugfs file was
1205  * opened.
1206  *
1207  * Returns:
1208  * This function returns zero.
1209  **/
1210 static int
1211 lpfc_debugfs_release(struct inode *inode, struct file *file)
1212 {
1213         struct lpfc_debug *debug = file->private_data;
1214
1215         kfree(debug->buffer);
1216         kfree(debug);
1217
1218         return 0;
1219 }
1220
1221 static int
1222 lpfc_debugfs_dumpDataDif_release(struct inode *inode, struct file *file)
1223 {
1224         struct lpfc_debug *debug = file->private_data;
1225
1226         debug->buffer = NULL;
1227         kfree(debug);
1228
1229         return 0;
1230 }
1231
1232 /*
1233  * ---------------------------------
1234  * iDiag debugfs file access methods
1235  * ---------------------------------
1236  *
1237  * All access methods are through the proper SLI4 PCI function's debugfs
1238  * iDiag directory:
1239  *
1240  *     /sys/kernel/debug/lpfc/fn<#>/iDiag
1241  */
1242
1243 /**
1244  * lpfc_idiag_cmd_get - Get and parse idiag debugfs comands from user space
1245  * @buf: The pointer to the user space buffer.
1246  * @nbytes: The number of bytes in the user space buffer.
1247  * @idiag_cmd: pointer to the idiag command struct.
1248  *
1249  * This routine reads data from debugfs user space buffer and parses the
1250  * buffer for getting the idiag command and arguments. The while space in
1251  * between the set of data is used as the parsing separator.
1252  *
1253  * This routine returns 0 when successful, it returns proper error code
1254  * back to the user space in error conditions.
1255  */
1256 static int lpfc_idiag_cmd_get(const char __user *buf, size_t nbytes,
1257                               struct lpfc_idiag_cmd *idiag_cmd)
1258 {
1259         char mybuf[64];
1260         char *pbuf, *step_str;
1261         int i;
1262         size_t bsize;
1263
1264         /* Protect copy from user */
1265         if (!access_ok(VERIFY_READ, buf, nbytes))
1266                 return -EFAULT;
1267
1268         memset(mybuf, 0, sizeof(mybuf));
1269         memset(idiag_cmd, 0, sizeof(*idiag_cmd));
1270         bsize = min(nbytes, (sizeof(mybuf)-1));
1271
1272         if (copy_from_user(mybuf, buf, bsize))
1273                 return -EFAULT;
1274         pbuf = &mybuf[0];
1275         step_str = strsep(&pbuf, "\t ");
1276
1277         /* The opcode must present */
1278         if (!step_str)
1279                 return -EINVAL;
1280
1281         idiag_cmd->opcode = simple_strtol(step_str, NULL, 0);
1282         if (idiag_cmd->opcode == 0)
1283                 return -EINVAL;
1284
1285         for (i = 0; i < LPFC_IDIAG_CMD_DATA_SIZE; i++) {
1286                 step_str = strsep(&pbuf, "\t ");
1287                 if (!step_str)
1288                         return i;
1289                 idiag_cmd->data[i] = simple_strtol(step_str, NULL, 0);
1290         }
1291         return i;
1292 }
1293
1294 /**
1295  * lpfc_idiag_open - idiag open debugfs
1296  * @inode: The inode pointer that contains a pointer to phba.
1297  * @file: The file pointer to attach the file operation.
1298  *
1299  * Description:
1300  * This routine is the entry point for the debugfs open file operation. It
1301  * gets the reference to phba from the i_private field in @inode, it then
1302  * allocates buffer for the file operation, performs the necessary PCI config
1303  * space read into the allocated buffer according to the idiag user command
1304  * setup, and then returns a pointer to buffer in the private_data field in
1305  * @file.
1306  *
1307  * Returns:
1308  * This function returns zero if successful. On error it will return an
1309  * negative error value.
1310  **/
1311 static int
1312 lpfc_idiag_open(struct inode *inode, struct file *file)
1313 {
1314         struct lpfc_debug *debug;
1315
1316         debug = kmalloc(sizeof(*debug), GFP_KERNEL);
1317         if (!debug)
1318                 return -ENOMEM;
1319
1320         debug->i_private = inode->i_private;
1321         debug->buffer = NULL;
1322         file->private_data = debug;
1323
1324         return 0;
1325 }
1326
1327 /**
1328  * lpfc_idiag_release - Release idiag access file operation
1329  * @inode: The inode pointer that contains a vport pointer. (unused)
1330  * @file: The file pointer that contains the buffer to release.
1331  *
1332  * Description:
1333  * This routine is the generic release routine for the idiag access file
1334  * operation, it frees the buffer that was allocated when the debugfs file
1335  * was opened.
1336  *
1337  * Returns:
1338  * This function returns zero.
1339  **/
1340 static int
1341 lpfc_idiag_release(struct inode *inode, struct file *file)
1342 {
1343         struct lpfc_debug *debug = file->private_data;
1344
1345         /* Free the buffers to the file operation */
1346         kfree(debug->buffer);
1347         kfree(debug);
1348
1349         return 0;
1350 }
1351
1352 /**
1353  * lpfc_idiag_cmd_release - Release idiag cmd access file operation
1354  * @inode: The inode pointer that contains a vport pointer. (unused)
1355  * @file: The file pointer that contains the buffer to release.
1356  *
1357  * Description:
1358  * This routine frees the buffer that was allocated when the debugfs file
1359  * was opened. It also reset the fields in the idiag command struct in the
1360  * case of command for write operation.
1361  *
1362  * Returns:
1363  * This function returns zero.
1364  **/
1365 static int
1366 lpfc_idiag_cmd_release(struct inode *inode, struct file *file)
1367 {
1368         struct lpfc_debug *debug = file->private_data;
1369
1370         if (debug->op == LPFC_IDIAG_OP_WR) {
1371                 switch (idiag.cmd.opcode) {
1372                 case LPFC_IDIAG_CMD_PCICFG_WR:
1373                 case LPFC_IDIAG_CMD_PCICFG_ST:
1374                 case LPFC_IDIAG_CMD_PCICFG_CL:
1375                 case LPFC_IDIAG_CMD_QUEACC_WR:
1376                 case LPFC_IDIAG_CMD_QUEACC_ST:
1377                 case LPFC_IDIAG_CMD_QUEACC_CL:
1378                         memset(&idiag, 0, sizeof(idiag));
1379                         break;
1380                 default:
1381                         break;
1382                 }
1383         }
1384
1385         /* Free the buffers to the file operation */
1386         kfree(debug->buffer);
1387         kfree(debug);
1388
1389         return 0;
1390 }
1391
1392 /**
1393  * lpfc_idiag_pcicfg_read - idiag debugfs read pcicfg
1394  * @file: The file pointer to read from.
1395  * @buf: The buffer to copy the data to.
1396  * @nbytes: The number of bytes to read.
1397  * @ppos: The position in the file to start reading from.
1398  *
1399  * Description:
1400  * This routine reads data from the @phba pci config space according to the
1401  * idiag command, and copies to user @buf. Depending on the PCI config space
1402  * read command setup, it does either a single register read of a byte
1403  * (8 bits), a word (16 bits), or a dword (32 bits) or browsing through all
1404  * registers from the 4K extended PCI config space.
1405  *
1406  * Returns:
1407  * This function returns the amount of data that was read (this could be less
1408  * than @nbytes if the end of the file was reached) or a negative error value.
1409  **/
1410 static ssize_t
1411 lpfc_idiag_pcicfg_read(struct file *file, char __user *buf, size_t nbytes,
1412                        loff_t *ppos)
1413 {
1414         struct lpfc_debug *debug = file->private_data;
1415         struct lpfc_hba *phba = (struct lpfc_hba *)debug->i_private;
1416         int offset_label, offset, len = 0, index = LPFC_PCI_CFG_RD_SIZE;
1417         int where, count;
1418         char *pbuffer;
1419         struct pci_dev *pdev;
1420         uint32_t u32val;
1421         uint16_t u16val;
1422         uint8_t u8val;
1423
1424         pdev = phba->pcidev;
1425         if (!pdev)
1426                 return 0;
1427
1428         /* This is a user read operation */
1429         debug->op = LPFC_IDIAG_OP_RD;
1430
1431         if (!debug->buffer)
1432                 debug->buffer = kmalloc(LPFC_PCI_CFG_SIZE, GFP_KERNEL);
1433         if (!debug->buffer)
1434                 return 0;
1435         pbuffer = debug->buffer;
1436
1437         if (*ppos)
1438                 return 0;
1439
1440         if (idiag.cmd.opcode == LPFC_IDIAG_CMD_PCICFG_RD) {
1441                 where = idiag.cmd.data[IDIAG_PCICFG_WHERE_INDX];
1442                 count = idiag.cmd.data[IDIAG_PCICFG_COUNT_INDX];
1443         } else
1444                 return 0;
1445
1446         /* Read single PCI config space register */
1447         switch (count) {
1448         case SIZE_U8: /* byte (8 bits) */
1449                 pci_read_config_byte(pdev, where, &u8val);
1450                 len += snprintf(pbuffer+len, LPFC_PCI_CFG_SIZE-len,
1451                                 "%03x: %02x\n", where, u8val);
1452                 break;
1453         case SIZE_U16: /* word (16 bits) */
1454                 pci_read_config_word(pdev, where, &u16val);
1455                 len += snprintf(pbuffer+len, LPFC_PCI_CFG_SIZE-len,
1456                                 "%03x: %04x\n", where, u16val);
1457                 break;
1458         case SIZE_U32: /* double word (32 bits) */
1459                 pci_read_config_dword(pdev, where, &u32val);
1460                 len += snprintf(pbuffer+len, LPFC_PCI_CFG_SIZE-len,
1461                                 "%03x: %08x\n", where, u32val);
1462                 break;
1463         case LPFC_PCI_CFG_BROWSE: /* browse all */
1464                 goto pcicfg_browse;
1465                 break;
1466         default:
1467                 /* illegal count */
1468                 len = 0;
1469                 break;
1470         }
1471         return simple_read_from_buffer(buf, nbytes, ppos, pbuffer, len);
1472
1473 pcicfg_browse:
1474
1475         /* Browse all PCI config space registers */
1476         offset_label = idiag.offset.last_rd;
1477         offset = offset_label;
1478
1479         /* Read PCI config space */
1480         len += snprintf(pbuffer+len, LPFC_PCI_CFG_SIZE-len,
1481                         "%03x: ", offset_label);
1482         while (index > 0) {
1483                 pci_read_config_dword(pdev, offset, &u32val);
1484                 len += snprintf(pbuffer+len, LPFC_PCI_CFG_SIZE-len,
1485                                 "%08x ", u32val);
1486                 offset += sizeof(uint32_t);
1487                 if (offset >= LPFC_PCI_CFG_SIZE) {
1488                         len += snprintf(pbuffer+len,
1489                                         LPFC_PCI_CFG_SIZE-len, "\n");
1490                         break;
1491                 }
1492                 index -= sizeof(uint32_t);
1493                 if (!index)
1494                         len += snprintf(pbuffer+len, LPFC_PCI_CFG_SIZE-len,
1495                                         "\n");
1496                 else if (!(index % (8 * sizeof(uint32_t)))) {
1497                         offset_label += (8 * sizeof(uint32_t));
1498                         len += snprintf(pbuffer+len, LPFC_PCI_CFG_SIZE-len,
1499                                         "\n%03x: ", offset_label);
1500                 }
1501         }
1502
1503         /* Set up the offset for next portion of pci cfg read */
1504         if (index == 0) {
1505                 idiag.offset.last_rd += LPFC_PCI_CFG_RD_SIZE;
1506                 if (idiag.offset.last_rd >= LPFC_PCI_CFG_SIZE)
1507                         idiag.offset.last_rd = 0;
1508         } else
1509                 idiag.offset.last_rd = 0;
1510
1511         return simple_read_from_buffer(buf, nbytes, ppos, pbuffer, len);
1512 }
1513
1514 /**
1515  * lpfc_idiag_pcicfg_write - Syntax check and set up idiag pcicfg commands
1516  * @file: The file pointer to read from.
1517  * @buf: The buffer to copy the user data from.
1518  * @nbytes: The number of bytes to get.
1519  * @ppos: The position in the file to start reading from.
1520  *
1521  * This routine get the debugfs idiag command struct from user space and
1522  * then perform the syntax check for PCI config space read or write command
1523  * accordingly. In the case of PCI config space read command, it sets up
1524  * the command in the idiag command struct for the debugfs read operation.
1525  * In the case of PCI config space write operation, it executes the write
1526  * operation into the PCI config space accordingly.
1527  *
1528  * It returns the @nbytges passing in from debugfs user space when successful.
1529  * In case of error conditions, it returns proper error code back to the user
1530  * space.
1531  */
1532 static ssize_t
1533 lpfc_idiag_pcicfg_write(struct file *file, const char __user *buf,
1534                         size_t nbytes, loff_t *ppos)
1535 {
1536         struct lpfc_debug *debug = file->private_data;
1537         struct lpfc_hba *phba = (struct lpfc_hba *)debug->i_private;
1538         uint32_t where, value, count;
1539         uint32_t u32val;
1540         uint16_t u16val;
1541         uint8_t u8val;
1542         struct pci_dev *pdev;
1543         int rc;
1544
1545         pdev = phba->pcidev;
1546         if (!pdev)
1547                 return -EFAULT;
1548
1549         /* This is a user write operation */
1550         debug->op = LPFC_IDIAG_OP_WR;
1551
1552         rc = lpfc_idiag_cmd_get(buf, nbytes, &idiag.cmd);
1553         if (rc < 0)
1554                 return rc;
1555
1556         if (idiag.cmd.opcode == LPFC_IDIAG_CMD_PCICFG_RD) {
1557                 /* Sanity check on PCI config read command line arguments */
1558                 if (rc != LPFC_PCI_CFG_RD_CMD_ARG)
1559                         goto error_out;
1560                 /* Read command from PCI config space, set up command fields */
1561                 where = idiag.cmd.data[IDIAG_PCICFG_WHERE_INDX];
1562                 count = idiag.cmd.data[IDIAG_PCICFG_COUNT_INDX];
1563                 if (count == LPFC_PCI_CFG_BROWSE) {
1564                         if (where % sizeof(uint32_t))
1565                                 goto error_out;
1566                         /* Starting offset to browse */
1567                         idiag.offset.last_rd = where;
1568                 } else if ((count != sizeof(uint8_t)) &&
1569                            (count != sizeof(uint16_t)) &&
1570                            (count != sizeof(uint32_t)))
1571                         goto error_out;
1572                 if (count == sizeof(uint8_t)) {
1573                         if (where > LPFC_PCI_CFG_SIZE - sizeof(uint8_t))
1574                                 goto error_out;
1575                         if (where % sizeof(uint8_t))
1576                                 goto error_out;
1577                 }
1578                 if (count == sizeof(uint16_t)) {
1579                         if (where > LPFC_PCI_CFG_SIZE - sizeof(uint16_t))
1580                                 goto error_out;
1581                         if (where % sizeof(uint16_t))
1582                                 goto error_out;
1583                 }
1584                 if (count == sizeof(uint32_t)) {
1585                         if (where > LPFC_PCI_CFG_SIZE - sizeof(uint32_t))
1586                                 goto error_out;
1587                         if (where % sizeof(uint32_t))
1588                                 goto error_out;
1589                 }
1590         } else if (idiag.cmd.opcode == LPFC_IDIAG_CMD_PCICFG_WR ||
1591                    idiag.cmd.opcode == LPFC_IDIAG_CMD_PCICFG_ST ||
1592                    idiag.cmd.opcode == LPFC_IDIAG_CMD_PCICFG_CL) {
1593                 /* Sanity check on PCI config write command line arguments */
1594                 if (rc != LPFC_PCI_CFG_WR_CMD_ARG)
1595                         goto error_out;
1596                 /* Write command to PCI config space, read-modify-write */
1597                 where = idiag.cmd.data[IDIAG_PCICFG_WHERE_INDX];
1598                 count = idiag.cmd.data[IDIAG_PCICFG_COUNT_INDX];
1599                 value = idiag.cmd.data[IDIAG_PCICFG_VALUE_INDX];
1600                 /* Sanity checks */
1601                 if ((count != sizeof(uint8_t)) &&
1602                     (count != sizeof(uint16_t)) &&
1603                     (count != sizeof(uint32_t)))
1604                         goto error_out;
1605                 if (count == sizeof(uint8_t)) {
1606                         if (where > LPFC_PCI_CFG_SIZE - sizeof(uint8_t))
1607                                 goto error_out;
1608                         if (where % sizeof(uint8_t))
1609                                 goto error_out;
1610                         if (idiag.cmd.opcode == LPFC_IDIAG_CMD_PCICFG_WR)
1611                                 pci_write_config_byte(pdev, where,
1612                                                       (uint8_t)value);
1613                         if (idiag.cmd.opcode == LPFC_IDIAG_CMD_PCICFG_ST) {
1614                                 rc = pci_read_config_byte(pdev, where, &u8val);
1615                                 if (!rc) {
1616                                         u8val |= (uint8_t)value;
1617                                         pci_write_config_byte(pdev, where,
1618                                                               u8val);
1619                                 }
1620                         }
1621                         if (idiag.cmd.opcode == LPFC_IDIAG_CMD_PCICFG_CL) {
1622                                 rc = pci_read_config_byte(pdev, where, &u8val);
1623                                 if (!rc) {
1624                                         u8val &= (uint8_t)(~value);
1625                                         pci_write_config_byte(pdev, where,
1626                                                               u8val);
1627                                 }
1628                         }
1629                 }
1630                 if (count == sizeof(uint16_t)) {
1631                         if (where > LPFC_PCI_CFG_SIZE - sizeof(uint16_t))
1632                                 goto error_out;
1633                         if (where % sizeof(uint16_t))
1634                                 goto error_out;
1635                         if (idiag.cmd.opcode == LPFC_IDIAG_CMD_PCICFG_WR)
1636                                 pci_write_config_word(pdev, where,
1637                                                       (uint16_t)value);
1638                         if (idiag.cmd.opcode == LPFC_IDIAG_CMD_PCICFG_ST) {
1639                                 rc = pci_read_config_word(pdev, where, &u16val);
1640                                 if (!rc) {
1641                                         u16val |= (uint16_t)value;
1642                                         pci_write_config_word(pdev, where,
1643                                                               u16val);
1644                                 }
1645                         }
1646                         if (idiag.cmd.opcode == LPFC_IDIAG_CMD_PCICFG_CL) {
1647                                 rc = pci_read_config_word(pdev, where, &u16val);
1648                                 if (!rc) {
1649                                         u16val &= (uint16_t)(~value);
1650                                         pci_write_config_word(pdev, where,
1651                                                               u16val);
1652                                 }
1653                         }
1654                 }
1655                 if (count == sizeof(uint32_t)) {
1656                         if (where > LPFC_PCI_CFG_SIZE - sizeof(uint32_t))
1657                                 goto error_out;
1658                         if (where % sizeof(uint32_t))
1659                                 goto error_out;
1660                         if (idiag.cmd.opcode == LPFC_IDIAG_CMD_PCICFG_WR)
1661                                 pci_write_config_dword(pdev, where, value);
1662                         if (idiag.cmd.opcode == LPFC_IDIAG_CMD_PCICFG_ST) {
1663                                 rc = pci_read_config_dword(pdev, where,
1664                                                            &u32val);
1665                                 if (!rc) {
1666                                         u32val |= value;
1667                                         pci_write_config_dword(pdev, where,
1668                                                                u32val);
1669                                 }
1670                         }
1671                         if (idiag.cmd.opcode == LPFC_IDIAG_CMD_PCICFG_CL) {
1672                                 rc = pci_read_config_dword(pdev, where,
1673                                                            &u32val);
1674                                 if (!rc) {
1675                                         u32val &= ~value;
1676                                         pci_write_config_dword(pdev, where,
1677                                                                u32val);
1678                                 }
1679                         }
1680                 }
1681         } else
1682                 /* All other opecodes are illegal for now */
1683                 goto error_out;
1684
1685         return nbytes;
1686 error_out:
1687         memset(&idiag, 0, sizeof(idiag));
1688         return -EINVAL;
1689 }
1690
1691 /**
1692  * lpfc_idiag_baracc_read - idiag debugfs pci bar access read
1693  * @file: The file pointer to read from.
1694  * @buf: The buffer to copy the data to.
1695  * @nbytes: The number of bytes to read.
1696  * @ppos: The position in the file to start reading from.
1697  *
1698  * Description:
1699  * This routine reads data from the @phba pci bar memory mapped space
1700  * according to the idiag command, and copies to user @buf.
1701  *
1702  * Returns:
1703  * This function returns the amount of data that was read (this could be less
1704  * than @nbytes if the end of the file was reached) or a negative error value.
1705  **/
1706 static ssize_t
1707 lpfc_idiag_baracc_read(struct file *file, char __user *buf, size_t nbytes,
1708                        loff_t *ppos)
1709 {
1710         struct lpfc_debug *debug = file->private_data;
1711         struct lpfc_hba *phba = (struct lpfc_hba *)debug->i_private;
1712         int offset_label, offset, offset_run, len = 0, index;
1713         int bar_num, acc_range, bar_size;
1714         char *pbuffer;
1715         void __iomem *mem_mapped_bar;
1716         uint32_t if_type;
1717         struct pci_dev *pdev;
1718         uint32_t u32val;
1719
1720         pdev = phba->pcidev;
1721         if (!pdev)
1722                 return 0;
1723
1724         /* This is a user read operation */
1725         debug->op = LPFC_IDIAG_OP_RD;
1726
1727         if (!debug->buffer)
1728                 debug->buffer = kmalloc(LPFC_PCI_BAR_RD_BUF_SIZE, GFP_KERNEL);
1729         if (!debug->buffer)
1730                 return 0;
1731         pbuffer = debug->buffer;
1732
1733         if (*ppos)
1734                 return 0;
1735
1736         if (idiag.cmd.opcode == LPFC_IDIAG_CMD_BARACC_RD) {
1737                 bar_num   = idiag.cmd.data[IDIAG_BARACC_BAR_NUM_INDX];
1738                 offset    = idiag.cmd.data[IDIAG_BARACC_OFF_SET_INDX];
1739                 acc_range = idiag.cmd.data[IDIAG_BARACC_ACC_MOD_INDX];
1740                 bar_size = idiag.cmd.data[IDIAG_BARACC_BAR_SZE_INDX];
1741         } else
1742                 return 0;
1743
1744         if (acc_range == 0)
1745                 return 0;
1746
1747         if_type = bf_get(lpfc_sli_intf_if_type, &phba->sli4_hba.sli_intf);
1748         if (if_type == LPFC_SLI_INTF_IF_TYPE_0) {
1749                 if (bar_num == IDIAG_BARACC_BAR_0)
1750                         mem_mapped_bar = phba->sli4_hba.conf_regs_memmap_p;
1751                 else if (bar_num == IDIAG_BARACC_BAR_1)
1752                         mem_mapped_bar = phba->sli4_hba.ctrl_regs_memmap_p;
1753                 else if (bar_num == IDIAG_BARACC_BAR_2)
1754                         mem_mapped_bar = phba->sli4_hba.drbl_regs_memmap_p;
1755                 else
1756                         return 0;
1757         } else if (if_type == LPFC_SLI_INTF_IF_TYPE_2) {
1758                 if (bar_num == IDIAG_BARACC_BAR_0)
1759                         mem_mapped_bar = phba->sli4_hba.conf_regs_memmap_p;
1760                 else
1761                         return 0;
1762         } else
1763                 return 0;
1764
1765         /* Read single PCI bar space register */
1766         if (acc_range == SINGLE_WORD) {
1767                 offset_run = offset;
1768                 u32val = readl(mem_mapped_bar + offset_run);
1769                 len += snprintf(pbuffer+len, LPFC_PCI_BAR_RD_BUF_SIZE-len,
1770                                 "%05x: %08x\n", offset_run, u32val);
1771         } else
1772                 goto baracc_browse;
1773
1774         return simple_read_from_buffer(buf, nbytes, ppos, pbuffer, len);
1775
1776 baracc_browse:
1777
1778         /* Browse all PCI bar space registers */
1779         offset_label = idiag.offset.last_rd;
1780         offset_run = offset_label;
1781
1782         /* Read PCI bar memory mapped space */
1783         len += snprintf(pbuffer+len, LPFC_PCI_BAR_RD_BUF_SIZE-len,
1784                         "%05x: ", offset_label);
1785         index = LPFC_PCI_BAR_RD_SIZE;
1786         while (index > 0) {
1787                 u32val = readl(mem_mapped_bar + offset_run);
1788                 len += snprintf(pbuffer+len, LPFC_PCI_BAR_RD_BUF_SIZE-len,
1789                                 "%08x ", u32val);
1790                 offset_run += sizeof(uint32_t);
1791                 if (acc_range == LPFC_PCI_BAR_BROWSE) {
1792                         if (offset_run >= bar_size) {
1793                                 len += snprintf(pbuffer+len,
1794                                         LPFC_PCI_BAR_RD_BUF_SIZE-len, "\n");
1795                                 break;
1796                         }
1797                 } else {
1798                         if (offset_run >= offset +
1799                             (acc_range * sizeof(uint32_t))) {
1800                                 len += snprintf(pbuffer+len,
1801                                         LPFC_PCI_BAR_RD_BUF_SIZE-len, "\n");
1802                                 break;
1803                         }
1804                 }
1805                 index -= sizeof(uint32_t);
1806                 if (!index)
1807                         len += snprintf(pbuffer+len,
1808                                         LPFC_PCI_BAR_RD_BUF_SIZE-len, "\n");
1809                 else if (!(index % (8 * sizeof(uint32_t)))) {
1810                         offset_label += (8 * sizeof(uint32_t));
1811                         len += snprintf(pbuffer+len,
1812                                         LPFC_PCI_BAR_RD_BUF_SIZE-len,
1813                                         "\n%05x: ", offset_label);
1814                 }
1815         }
1816
1817         /* Set up the offset for next portion of pci bar read */
1818         if (index == 0) {
1819                 idiag.offset.last_rd += LPFC_PCI_BAR_RD_SIZE;
1820                 if (acc_range == LPFC_PCI_BAR_BROWSE) {
1821                         if (idiag.offset.last_rd >= bar_size)
1822                                 idiag.offset.last_rd = 0;
1823                 } else {
1824                         if (offset_run >= offset +
1825                             (acc_range * sizeof(uint32_t)))
1826                                 idiag.offset.last_rd = offset;
1827                 }
1828         } else {
1829                 if (acc_range == LPFC_PCI_BAR_BROWSE)
1830                         idiag.offset.last_rd = 0;
1831                 else
1832                         idiag.offset.last_rd = offset;
1833         }
1834
1835         return simple_read_from_buffer(buf, nbytes, ppos, pbuffer, len);
1836 }
1837
1838 /**
1839  * lpfc_idiag_baracc_write - Syntax check and set up idiag bar access commands
1840  * @file: The file pointer to read from.
1841  * @buf: The buffer to copy the user data from.
1842  * @nbytes: The number of bytes to get.
1843  * @ppos: The position in the file to start reading from.
1844  *
1845  * This routine get the debugfs idiag command struct from user space and
1846  * then perform the syntax check for PCI bar memory mapped space read or
1847  * write command accordingly. In the case of PCI bar memory mapped space
1848  * read command, it sets up the command in the idiag command struct for
1849  * the debugfs read operation. In the case of PCI bar memorpy mapped space
1850  * write operation, it executes the write operation into the PCI bar memory
1851  * mapped space accordingly.
1852  *
1853  * It returns the @nbytges passing in from debugfs user space when successful.
1854  * In case of error conditions, it returns proper error code back to the user
1855  * space.
1856  */
1857 static ssize_t
1858 lpfc_idiag_baracc_write(struct file *file, const char __user *buf,
1859                         size_t nbytes, loff_t *ppos)
1860 {
1861         struct lpfc_debug *debug = file->private_data;
1862         struct lpfc_hba *phba = (struct lpfc_hba *)debug->i_private;
1863         uint32_t bar_num, bar_size, offset, value, acc_range;
1864         struct pci_dev *pdev;
1865         void __iomem *mem_mapped_bar;
1866         uint32_t if_type;
1867         uint32_t u32val;
1868         int rc;
1869
1870         pdev = phba->pcidev;
1871         if (!pdev)
1872                 return -EFAULT;
1873
1874         /* This is a user write operation */
1875         debug->op = LPFC_IDIAG_OP_WR;
1876
1877         rc = lpfc_idiag_cmd_get(buf, nbytes, &idiag.cmd);
1878         if (rc < 0)
1879                 return rc;
1880
1881         if_type = bf_get(lpfc_sli_intf_if_type, &phba->sli4_hba.sli_intf);
1882         bar_num = idiag.cmd.data[IDIAG_BARACC_BAR_NUM_INDX];
1883
1884         if (if_type == LPFC_SLI_INTF_IF_TYPE_0) {
1885                 if ((bar_num != IDIAG_BARACC_BAR_0) &&
1886                     (bar_num != IDIAG_BARACC_BAR_1) &&
1887                     (bar_num != IDIAG_BARACC_BAR_2))
1888                         goto error_out;
1889         } else if (if_type == LPFC_SLI_INTF_IF_TYPE_2) {
1890                 if (bar_num != IDIAG_BARACC_BAR_0)
1891                         goto error_out;
1892         } else
1893                 goto error_out;
1894
1895         if (if_type == LPFC_SLI_INTF_IF_TYPE_0) {
1896                 if (bar_num == IDIAG_BARACC_BAR_0) {
1897                         idiag.cmd.data[IDIAG_BARACC_BAR_SZE_INDX] =
1898                                 LPFC_PCI_IF0_BAR0_SIZE;
1899                         mem_mapped_bar = phba->sli4_hba.conf_regs_memmap_p;
1900                 } else if (bar_num == IDIAG_BARACC_BAR_1) {
1901                         idiag.cmd.data[IDIAG_BARACC_BAR_SZE_INDX] =
1902                                 LPFC_PCI_IF0_BAR1_SIZE;
1903                         mem_mapped_bar = phba->sli4_hba.ctrl_regs_memmap_p;
1904                 } else if (bar_num == IDIAG_BARACC_BAR_2) {
1905                         idiag.cmd.data[IDIAG_BARACC_BAR_SZE_INDX] =
1906                                 LPFC_PCI_IF0_BAR2_SIZE;
1907                         mem_mapped_bar = phba->sli4_hba.drbl_regs_memmap_p;
1908                 } else
1909                         goto error_out;
1910         } else if (if_type == LPFC_SLI_INTF_IF_TYPE_2) {
1911                 if (bar_num == IDIAG_BARACC_BAR_0) {
1912                         idiag.cmd.data[IDIAG_BARACC_BAR_SZE_INDX] =
1913                                 LPFC_PCI_IF2_BAR0_SIZE;
1914                         mem_mapped_bar = phba->sli4_hba.conf_regs_memmap_p;
1915                 } else
1916                         goto error_out;
1917         } else
1918                 goto error_out;
1919
1920         offset = idiag.cmd.data[IDIAG_BARACC_OFF_SET_INDX];
1921         if (offset % sizeof(uint32_t))
1922                 goto error_out;
1923
1924         bar_size = idiag.cmd.data[IDIAG_BARACC_BAR_SZE_INDX];
1925         if (idiag.cmd.opcode == LPFC_IDIAG_CMD_BARACC_RD) {
1926                 /* Sanity check on PCI config read command line arguments */
1927                 if (rc != LPFC_PCI_BAR_RD_CMD_ARG)
1928                         goto error_out;
1929                 acc_range = idiag.cmd.data[IDIAG_BARACC_ACC_MOD_INDX];
1930                 if (acc_range == LPFC_PCI_BAR_BROWSE) {
1931                         if (offset > bar_size - sizeof(uint32_t))
1932                                 goto error_out;
1933                         /* Starting offset to browse */
1934                         idiag.offset.last_rd = offset;
1935                 } else if (acc_range > SINGLE_WORD) {
1936                         if (offset + acc_range * sizeof(uint32_t) > bar_size)
1937                                 goto error_out;
1938                         /* Starting offset to browse */
1939                         idiag.offset.last_rd = offset;
1940                 } else if (acc_range != SINGLE_WORD)
1941                         goto error_out;
1942         } else if (idiag.cmd.opcode == LPFC_IDIAG_CMD_BARACC_WR ||
1943                    idiag.cmd.opcode == LPFC_IDIAG_CMD_BARACC_ST ||
1944                    idiag.cmd.opcode == LPFC_IDIAG_CMD_BARACC_CL) {
1945                 /* Sanity check on PCI bar write command line arguments */
1946                 if (rc != LPFC_PCI_BAR_WR_CMD_ARG)
1947                         goto error_out;
1948                 /* Write command to PCI bar space, read-modify-write */
1949                 acc_range = SINGLE_WORD;
1950                 value = idiag.cmd.data[IDIAG_BARACC_REG_VAL_INDX];
1951                 if (idiag.cmd.opcode == LPFC_IDIAG_CMD_BARACC_WR) {
1952                         writel(value, mem_mapped_bar + offset);
1953                         readl(mem_mapped_bar + offset);
1954                 }
1955                 if (idiag.cmd.opcode == LPFC_IDIAG_CMD_BARACC_ST) {
1956                         u32val = readl(mem_mapped_bar + offset);
1957                         u32val |= value;
1958                         writel(u32val, mem_mapped_bar + offset);
1959                         readl(mem_mapped_bar + offset);
1960                 }
1961                 if (idiag.cmd.opcode == LPFC_IDIAG_CMD_BARACC_CL) {
1962                         u32val = readl(mem_mapped_bar + offset);
1963                         u32val &= ~value;
1964                         writel(u32val, mem_mapped_bar + offset);
1965                         readl(mem_mapped_bar + offset);
1966                 }
1967         } else
1968                 /* All other opecodes are illegal for now */
1969                 goto error_out;
1970
1971         return nbytes;
1972 error_out:
1973         memset(&idiag, 0, sizeof(idiag));
1974         return -EINVAL;
1975 }
1976
1977 /**
1978  * lpfc_idiag_queinfo_read - idiag debugfs read queue information
1979  * @file: The file pointer to read from.
1980  * @buf: The buffer to copy the data to.
1981  * @nbytes: The number of bytes to read.
1982  * @ppos: The position in the file to start reading from.
1983  *
1984  * Description:
1985  * This routine reads data from the @phba SLI4 PCI function queue information,
1986  * and copies to user @buf.
1987  *
1988  * Returns:
1989  * This function returns the amount of data that was read (this could be less
1990  * than @nbytes if the end of the file was reached) or a negative error value.
1991  **/
1992 static ssize_t
1993 lpfc_idiag_queinfo_read(struct file *file, char __user *buf, size_t nbytes,
1994                         loff_t *ppos)
1995 {
1996         struct lpfc_debug *debug = file->private_data;
1997         struct lpfc_hba *phba = (struct lpfc_hba *)debug->i_private;
1998         int len = 0;
1999         char *pbuffer;
2000         int x, cnt;
2001         int max_cnt;
2002         struct lpfc_queue *qp = NULL;
2003
2004
2005         if (!debug->buffer)
2006                 debug->buffer = kmalloc(LPFC_QUE_INFO_GET_BUF_SIZE, GFP_KERNEL);
2007         if (!debug->buffer)
2008                 return 0;
2009         pbuffer = debug->buffer;
2010         max_cnt = LPFC_QUE_INFO_GET_BUF_SIZE - 128;
2011
2012         if (*ppos)
2013                 return 0;
2014
2015         spin_lock_irq(&phba->hbalock);
2016
2017         /* Fast-path event queue */
2018         if (phba->sli4_hba.hba_eq && phba->cfg_fcp_io_channel) {
2019                 cnt = phba->cfg_fcp_io_channel;
2020
2021                 for (x = 0; x < cnt; x++) {
2022
2023                         /* Fast-path EQ */
2024                         qp = phba->sli4_hba.hba_eq[x];
2025                         if (!qp)
2026                                 goto proc_cq;
2027
2028                         len += snprintf(pbuffer+len,
2029                                 LPFC_QUE_INFO_GET_BUF_SIZE-len,
2030                                 "\nHBA EQ info: "
2031                                 "EQ-STAT[max:x%x noE:x%x "
2032                                 "bs:x%x proc:x%llx]\n",
2033                                 qp->q_cnt_1, qp->q_cnt_2,
2034                                 qp->q_cnt_3, (unsigned long long)qp->q_cnt_4);
2035
2036                         len += snprintf(pbuffer+len,
2037                                 LPFC_QUE_INFO_GET_BUF_SIZE-len,
2038                                 "EQID[%02d], "
2039                                 "QE-CNT[%04d], QE-SIZE[%04d], "
2040                                 "HOST-IDX[%04d], PORT-IDX[%04d]",
2041                                 qp->queue_id,
2042                                 qp->entry_count,
2043                                 qp->entry_size,
2044                                 qp->host_index,
2045                                 qp->hba_index);
2046
2047
2048                         /* Reset max counter */
2049                         qp->EQ_max_eqe = 0;
2050
2051                         len +=  snprintf(pbuffer+len,
2052                                 LPFC_QUE_INFO_GET_BUF_SIZE-len, "\n");
2053                         if (len >= max_cnt)
2054                                 goto too_big;
2055 proc_cq:
2056                         /* Fast-path FCP CQ */
2057                         qp = phba->sli4_hba.fcp_cq[x];
2058                         len += snprintf(pbuffer+len,
2059                                 LPFC_QUE_INFO_GET_BUF_SIZE-len,
2060                                 "\tFCP CQ info: ");
2061                         len += snprintf(pbuffer+len,
2062                                 LPFC_QUE_INFO_GET_BUF_SIZE-len,
2063                                 "AssocEQID[%02d]: "
2064                                 "CQ STAT[max:x%x relw:x%x "
2065                                 "xabt:x%x wq:x%llx]\n",
2066                                 qp->assoc_qid,
2067                                 qp->q_cnt_1, qp->q_cnt_2,
2068                                 qp->q_cnt_3, (unsigned long long)qp->q_cnt_4);
2069                         len += snprintf(pbuffer+len,
2070                                 LPFC_QUE_INFO_GET_BUF_SIZE-len,
2071                                 "\tCQID[%02d], "
2072                                 "QE-CNT[%04d], QE-SIZE[%04d], "
2073                                 "HOST-IDX[%04d], PORT-IDX[%04d]",
2074                                 qp->queue_id, qp->entry_count,
2075                                 qp->entry_size, qp->host_index,
2076                                 qp->hba_index);
2077
2078
2079                         /* Reset max counter */
2080                         qp->CQ_max_cqe = 0;
2081
2082                         len +=  snprintf(pbuffer+len,
2083                                 LPFC_QUE_INFO_GET_BUF_SIZE-len, "\n");
2084                         if (len >= max_cnt)
2085                                 goto too_big;
2086
2087                         /* Fast-path FCP WQ */
2088                         qp = phba->sli4_hba.fcp_wq[x];
2089
2090                         len += snprintf(pbuffer+len,
2091                                 LPFC_QUE_INFO_GET_BUF_SIZE-len,
2092                                 "\t\tFCP WQ info: ");
2093                         len += snprintf(pbuffer+len,
2094                                 LPFC_QUE_INFO_GET_BUF_SIZE-len,
2095                                 "AssocCQID[%02d]: "
2096                                 "WQ-STAT[oflow:x%x posted:x%llx]\n",
2097                                 qp->assoc_qid,
2098                                 qp->q_cnt_1, (unsigned long long)qp->q_cnt_4);
2099                         len += snprintf(pbuffer+len,
2100                                 LPFC_QUE_INFO_GET_BUF_SIZE-len,
2101                                 "\t\tWQID[%02d], "
2102                                 "QE-CNT[%04d], QE-SIZE[%04d], "
2103                                 "HOST-IDX[%04d], PORT-IDX[%04d]",
2104                                 qp->queue_id,
2105                                 qp->entry_count,
2106                                 qp->entry_size,
2107                                 qp->host_index,
2108                                 qp->hba_index);
2109
2110                         len +=  snprintf(pbuffer+len,
2111                                 LPFC_QUE_INFO_GET_BUF_SIZE-len, "\n");
2112                         if (len >= max_cnt)
2113                                 goto too_big;
2114
2115                         if (x)
2116                                 continue;
2117
2118                         /* Only EQ 0 has slow path CQs configured */
2119
2120                         /* Slow-path mailbox CQ */
2121                         qp = phba->sli4_hba.mbx_cq;
2122                         if (qp) {
2123                                 len += snprintf(pbuffer+len,
2124                                         LPFC_QUE_INFO_GET_BUF_SIZE-len,
2125                                         "\tMBX CQ info: ");
2126                                 len += snprintf(pbuffer+len,
2127                                         LPFC_QUE_INFO_GET_BUF_SIZE-len,
2128                                         "AssocEQID[%02d]: "
2129                                         "CQ-STAT[mbox:x%x relw:x%x "
2130                                         "xabt:x%x wq:x%llx]\n",
2131                                         qp->assoc_qid,
2132                                         qp->q_cnt_1, qp->q_cnt_2,
2133                                         qp->q_cnt_3,
2134                                         (unsigned long long)qp->q_cnt_4);
2135                                 len += snprintf(pbuffer+len,
2136                                         LPFC_QUE_INFO_GET_BUF_SIZE-len,
2137                                         "\tCQID[%02d], "
2138                                         "QE-CNT[%04d], QE-SIZE[%04d], "
2139                                         "HOST-IDX[%04d], PORT-IDX[%04d]",
2140                                         qp->queue_id, qp->entry_count,
2141                                         qp->entry_size, qp->host_index,
2142                                         qp->hba_index);
2143
2144                                 len +=  snprintf(pbuffer+len,
2145                                         LPFC_QUE_INFO_GET_BUF_SIZE-len, "\n");
2146                                 if (len >= max_cnt)
2147                                         goto too_big;
2148                         }
2149
2150                         /* Slow-path MBOX MQ */
2151                         qp = phba->sli4_hba.mbx_wq;
2152                         if (qp) {
2153                                 len += snprintf(pbuffer+len,
2154                                         LPFC_QUE_INFO_GET_BUF_SIZE-len,
2155                                         "\t\tMBX MQ info: ");
2156                                 len += snprintf(pbuffer+len,
2157                                         LPFC_QUE_INFO_GET_BUF_SIZE-len,
2158                                         "AssocCQID[%02d]:\n",
2159                                         phba->sli4_hba.mbx_wq->assoc_qid);
2160                                 len += snprintf(pbuffer+len,
2161                                         LPFC_QUE_INFO_GET_BUF_SIZE-len,
2162                                         "\t\tWQID[%02d], "
2163                                         "QE-CNT[%04d], QE-SIZE[%04d], "
2164                                         "HOST-IDX[%04d], PORT-IDX[%04d]",
2165                                         qp->queue_id, qp->entry_count,
2166                                         qp->entry_size, qp->host_index,
2167                                         qp->hba_index);
2168
2169                                 len +=  snprintf(pbuffer+len,
2170                                         LPFC_QUE_INFO_GET_BUF_SIZE-len, "\n");
2171                                 if (len >= max_cnt)
2172                                         goto too_big;
2173                         }
2174
2175                         /* Slow-path ELS response CQ */
2176                         qp = phba->sli4_hba.els_cq;
2177                         if (qp) {
2178                                 len += snprintf(pbuffer+len,
2179                                         LPFC_QUE_INFO_GET_BUF_SIZE-len,
2180                                         "\tELS CQ info: ");
2181                                 len += snprintf(pbuffer+len,
2182                                         LPFC_QUE_INFO_GET_BUF_SIZE-len,
2183                                         "AssocEQID[%02d]: "
2184                                         "CQ-STAT[max:x%x relw:x%x "
2185                                         "xabt:x%x wq:x%llx]\n",
2186                                         qp->assoc_qid,
2187                                         qp->q_cnt_1, qp->q_cnt_2,
2188                                         qp->q_cnt_3,
2189                                         (unsigned long long)qp->q_cnt_4);
2190                                 len += snprintf(pbuffer+len,
2191                                         LPFC_QUE_INFO_GET_BUF_SIZE-len,
2192                                         "\tCQID [%02d], "
2193                                         "QE-CNT[%04d], QE-SIZE[%04d], "
2194                                         "HOST-IDX[%04d], PORT-IDX[%04d]",
2195                                         qp->queue_id, qp->entry_count,
2196                                         qp->entry_size, qp->host_index,
2197                                         qp->hba_index);
2198
2199                                 /* Reset max counter */
2200                                 qp->CQ_max_cqe = 0;
2201
2202                                 len +=  snprintf(pbuffer+len,
2203                                         LPFC_QUE_INFO_GET_BUF_SIZE-len, "\n");
2204                                 if (len >= max_cnt)
2205                                         goto too_big;
2206                         }
2207
2208                         /* Slow-path ELS WQ */
2209                         qp = phba->sli4_hba.els_wq;
2210                         if (qp) {
2211                                 len += snprintf(pbuffer+len,
2212                                         LPFC_QUE_INFO_GET_BUF_SIZE-len,
2213                                         "\t\tELS WQ info: ");
2214                                 len += snprintf(pbuffer+len,
2215                                         LPFC_QUE_INFO_GET_BUF_SIZE-len,
2216                                         "AssocCQID[%02d]: "
2217                                         " WQ-STAT[oflow:x%x "
2218                                         "posted:x%llx]\n",
2219                                         qp->assoc_qid,
2220                                         qp->q_cnt_1,
2221                                         (unsigned long long)qp->q_cnt_4);
2222                                 len += snprintf(pbuffer+len,
2223                                         LPFC_QUE_INFO_GET_BUF_SIZE-len,
2224                                         "\t\tWQID[%02d], "
2225                                         "QE-CNT[%04d], QE-SIZE[%04d], "
2226                                         "HOST-IDX[%04d], PORT-IDX[%04d]",
2227                                         qp->queue_id, qp->entry_count,
2228                                         qp->entry_size, qp->host_index,
2229                                         qp->hba_index);
2230
2231                                 len +=  snprintf(pbuffer+len,
2232                                         LPFC_QUE_INFO_GET_BUF_SIZE-len, "\n");
2233                                 if (len >= max_cnt)
2234                                         goto too_big;
2235                         }
2236
2237                         if (phba->sli4_hba.hdr_rq && phba->sli4_hba.dat_rq) {
2238                                 /* Slow-path RQ header */
2239                                 qp = phba->sli4_hba.hdr_rq;
2240
2241                                 len += snprintf(pbuffer+len,
2242                                 LPFC_QUE_INFO_GET_BUF_SIZE-len,
2243                                         "\t\tRQ info: ");
2244                                 len += snprintf(pbuffer+len,
2245                                         LPFC_QUE_INFO_GET_BUF_SIZE-len,
2246                                         "AssocCQID[%02d]: "
2247                                         "RQ-STAT[nopost:x%x nobuf:x%x "
2248                                         "trunc:x%x rcv:x%llx]\n",
2249                                         qp->assoc_qid,
2250                                         qp->q_cnt_1, qp->q_cnt_2,
2251                                         qp->q_cnt_3,
2252                                         (unsigned long long)qp->q_cnt_4);
2253                                 len += snprintf(pbuffer+len,
2254                                         LPFC_QUE_INFO_GET_BUF_SIZE-len,
2255                                         "\t\tHQID[%02d], "
2256                                         "QE-CNT[%04d], QE-SIZE[%04d], "
2257                                         "HOST-IDX[%04d], PORT-IDX[%04d]\n",
2258                                         qp->queue_id,
2259                                         qp->entry_count,
2260                                         qp->entry_size,
2261                                         qp->host_index,
2262                                         qp->hba_index);
2263
2264                                 /* Slow-path RQ data */
2265                                 qp = phba->sli4_hba.dat_rq;
2266                                 len += snprintf(pbuffer+len,
2267                                         LPFC_QUE_INFO_GET_BUF_SIZE-len,
2268                                         "\t\tDQID[%02d], "
2269                                         "QE-CNT[%04d], QE-SIZE[%04d], "
2270                                         "HOST-IDX[%04d], PORT-IDX[%04d]\n",
2271                                         qp->queue_id,
2272                                         qp->entry_count,
2273                                         qp->entry_size,
2274                                         qp->host_index,
2275                                         qp->hba_index);
2276
2277                                 len +=  snprintf(pbuffer+len,
2278                                         LPFC_QUE_INFO_GET_BUF_SIZE-len, "\n");
2279                         }
2280                 }
2281         }
2282
2283         spin_unlock_irq(&phba->hbalock);
2284         return simple_read_from_buffer(buf, nbytes, ppos, pbuffer, len);
2285
2286 too_big:
2287         len +=  snprintf(pbuffer+len,
2288                 LPFC_QUE_INFO_GET_BUF_SIZE-len, "Truncated ...\n");
2289         spin_unlock_irq(&phba->hbalock);
2290         return simple_read_from_buffer(buf, nbytes, ppos, pbuffer, len);
2291 }
2292
2293 /**
2294  * lpfc_idiag_que_param_check - queue access command parameter sanity check
2295  * @q: The pointer to queue structure.
2296  * @index: The index into a queue entry.
2297  * @count: The number of queue entries to access.
2298  *
2299  * Description:
2300  * The routine performs sanity check on device queue access method commands.
2301  *
2302  * Returns:
2303  * This function returns -EINVAL when fails the sanity check, otherwise, it
2304  * returns 0.
2305  **/
2306 static int
2307 lpfc_idiag_que_param_check(struct lpfc_queue *q, int index, int count)
2308 {
2309         /* Only support single entry read or browsing */
2310         if ((count != 1) && (count != LPFC_QUE_ACC_BROWSE))
2311                 return -EINVAL;
2312         if (index > q->entry_count - 1)
2313                 return -EINVAL;
2314         return 0;
2315 }
2316
2317 /**
2318  * lpfc_idiag_queacc_read_qe - read a single entry from the given queue index
2319  * @pbuffer: The pointer to buffer to copy the read data into.
2320  * @pque: The pointer to the queue to be read.
2321  * @index: The index into the queue entry.
2322  *
2323  * Description:
2324  * This routine reads out a single entry from the given queue's index location
2325  * and copies it into the buffer provided.
2326  *
2327  * Returns:
2328  * This function returns 0 when it fails, otherwise, it returns the length of
2329  * the data read into the buffer provided.
2330  **/
2331 static int
2332 lpfc_idiag_queacc_read_qe(char *pbuffer, int len, struct lpfc_queue *pque,
2333                           uint32_t index)
2334 {
2335         int offset, esize;
2336         uint32_t *pentry;
2337
2338         if (!pbuffer || !pque)
2339                 return 0;
2340
2341         esize = pque->entry_size;
2342         len += snprintf(pbuffer+len, LPFC_QUE_ACC_BUF_SIZE-len,
2343                         "QE-INDEX[%04d]:\n", index);
2344
2345         offset = 0;
2346         pentry = pque->qe[index].address;
2347         while (esize > 0) {
2348                 len += snprintf(pbuffer+len, LPFC_QUE_ACC_BUF_SIZE-len,
2349                                 "%08x ", *pentry);
2350                 pentry++;
2351                 offset += sizeof(uint32_t);
2352                 esize -= sizeof(uint32_t);
2353                 if (esize > 0 && !(offset % (4 * sizeof(uint32_t))))
2354                         len += snprintf(pbuffer+len,
2355                                         LPFC_QUE_ACC_BUF_SIZE-len, "\n");
2356         }
2357         len += snprintf(pbuffer+len, LPFC_QUE_ACC_BUF_SIZE-len, "\n");
2358
2359         return len;
2360 }
2361
2362 /**
2363  * lpfc_idiag_queacc_read - idiag debugfs read port queue
2364  * @file: The file pointer to read from.
2365  * @buf: The buffer to copy the data to.
2366  * @nbytes: The number of bytes to read.
2367  * @ppos: The position in the file to start reading from.
2368  *
2369  * Description:
2370  * This routine reads data from the @phba device queue memory according to the
2371  * idiag command, and copies to user @buf. Depending on the queue dump read
2372  * command setup, it does either a single queue entry read or browing through
2373  * all entries of the queue.
2374  *
2375  * Returns:
2376  * This function returns the amount of data that was read (this could be less
2377  * than @nbytes if the end of the file was reached) or a negative error value.
2378  **/
2379 static ssize_t
2380 lpfc_idiag_queacc_read(struct file *file, char __user *buf, size_t nbytes,
2381                        loff_t *ppos)
2382 {
2383         struct lpfc_debug *debug = file->private_data;
2384         uint32_t last_index, index, count;
2385         struct lpfc_queue *pque = NULL;
2386         char *pbuffer;
2387         int len = 0;
2388
2389         /* This is a user read operation */
2390         debug->op = LPFC_IDIAG_OP_RD;
2391
2392         if (!debug->buffer)
2393                 debug->buffer = kmalloc(LPFC_QUE_ACC_BUF_SIZE, GFP_KERNEL);
2394         if (!debug->buffer)
2395                 return 0;
2396         pbuffer = debug->buffer;
2397
2398         if (*ppos)
2399                 return 0;
2400
2401         if (idiag.cmd.opcode == LPFC_IDIAG_CMD_QUEACC_RD) {
2402                 index = idiag.cmd.data[IDIAG_QUEACC_INDEX_INDX];
2403                 count = idiag.cmd.data[IDIAG_QUEACC_COUNT_INDX];
2404                 pque = (struct lpfc_queue *)idiag.ptr_private;
2405         } else
2406                 return 0;
2407
2408         /* Browse the queue starting from index */
2409         if (count == LPFC_QUE_ACC_BROWSE)
2410                 goto que_browse;
2411
2412         /* Read a single entry from the queue */
2413         len = lpfc_idiag_queacc_read_qe(pbuffer, len, pque, index);
2414
2415         return simple_read_from_buffer(buf, nbytes, ppos, pbuffer, len);
2416
2417 que_browse:
2418
2419         /* Browse all entries from the queue */
2420         last_index = idiag.offset.last_rd;
2421         index = last_index;
2422
2423         while (len < LPFC_QUE_ACC_SIZE - pque->entry_size) {
2424                 len = lpfc_idiag_queacc_read_qe(pbuffer, len, pque, index);
2425                 index++;
2426                 if (index > pque->entry_count - 1)
2427                         break;
2428         }
2429
2430         /* Set up the offset for next portion of pci cfg read */
2431         if (index > pque->entry_count - 1)
2432                 index = 0;
2433         idiag.offset.last_rd = index;
2434
2435         return simple_read_from_buffer(buf, nbytes, ppos, pbuffer, len);
2436 }
2437
2438 /**
2439  * lpfc_idiag_queacc_write - Syntax check and set up idiag queacc commands
2440  * @file: The file pointer to read from.
2441  * @buf: The buffer to copy the user data from.
2442  * @nbytes: The number of bytes to get.
2443  * @ppos: The position in the file to start reading from.
2444  *
2445  * This routine get the debugfs idiag command struct from user space and then
2446  * perform the syntax check for port queue read (dump) or write (set) command
2447  * accordingly. In the case of port queue read command, it sets up the command
2448  * in the idiag command struct for the following debugfs read operation. In
2449  * the case of port queue write operation, it executes the write operation
2450  * into the port queue entry accordingly.
2451  *
2452  * It returns the @nbytges passing in from debugfs user space when successful.
2453  * In case of error conditions, it returns proper error code back to the user
2454  * space.
2455  **/
2456 static ssize_t
2457 lpfc_idiag_queacc_write(struct file *file, const char __user *buf,
2458                         size_t nbytes, loff_t *ppos)
2459 {
2460         struct lpfc_debug *debug = file->private_data;
2461         struct lpfc_hba *phba = (struct lpfc_hba *)debug->i_private;
2462         uint32_t qidx, quetp, queid, index, count, offset, value;
2463         uint32_t *pentry;
2464         struct lpfc_queue *pque;
2465         int rc;
2466
2467         /* This is a user write operation */
2468         debug->op = LPFC_IDIAG_OP_WR;
2469
2470         rc = lpfc_idiag_cmd_get(buf, nbytes, &idiag.cmd);
2471         if (rc < 0)
2472                 return rc;
2473
2474         /* Get and sanity check on command feilds */
2475         quetp  = idiag.cmd.data[IDIAG_QUEACC_QUETP_INDX];
2476         queid  = idiag.cmd.data[IDIAG_QUEACC_QUEID_INDX];
2477         index  = idiag.cmd.data[IDIAG_QUEACC_INDEX_INDX];
2478         count  = idiag.cmd.data[IDIAG_QUEACC_COUNT_INDX];
2479         offset = idiag.cmd.data[IDIAG_QUEACC_OFFST_INDX];
2480         value  = idiag.cmd.data[IDIAG_QUEACC_VALUE_INDX];
2481
2482         /* Sanity check on command line arguments */
2483         if (idiag.cmd.opcode == LPFC_IDIAG_CMD_QUEACC_WR ||
2484             idiag.cmd.opcode == LPFC_IDIAG_CMD_QUEACC_ST ||
2485             idiag.cmd.opcode == LPFC_IDIAG_CMD_QUEACC_CL) {
2486                 if (rc != LPFC_QUE_ACC_WR_CMD_ARG)
2487                         goto error_out;
2488                 if (count != 1)
2489                         goto error_out;
2490         } else if (idiag.cmd.opcode == LPFC_IDIAG_CMD_QUEACC_RD) {
2491                 if (rc != LPFC_QUE_ACC_RD_CMD_ARG)
2492                         goto error_out;
2493         } else
2494                 goto error_out;
2495
2496         switch (quetp) {
2497         case LPFC_IDIAG_EQ:
2498                 /* HBA event queue */
2499                 if (phba->sli4_hba.hba_eq) {
2500                         for (qidx = 0; qidx < phba->cfg_fcp_io_channel;
2501                                 qidx++) {
2502                                 if (phba->sli4_hba.hba_eq[qidx] &&
2503                                     phba->sli4_hba.hba_eq[qidx]->queue_id ==
2504                                     queid) {
2505                                         /* Sanity check */
2506                                         rc = lpfc_idiag_que_param_check(
2507                                                 phba->sli4_hba.hba_eq[qidx],
2508                                                 index, count);
2509                                         if (rc)
2510                                                 goto error_out;
2511                                         idiag.ptr_private =
2512                                                 phba->sli4_hba.hba_eq[qidx];
2513                                         goto pass_check;
2514                                 }
2515                         }
2516                 }
2517                 goto error_out;
2518                 break;
2519         case LPFC_IDIAG_CQ:
2520                 /* MBX complete queue */
2521                 if (phba->sli4_hba.mbx_cq &&
2522                     phba->sli4_hba.mbx_cq->queue_id == queid) {
2523                         /* Sanity check */
2524                         rc = lpfc_idiag_que_param_check(
2525                                         phba->sli4_hba.mbx_cq, index, count);
2526                         if (rc)
2527                                 goto error_out;
2528                         idiag.ptr_private = phba->sli4_hba.mbx_cq;
2529                         goto pass_check;
2530                 }
2531                 /* ELS complete queue */
2532                 if (phba->sli4_hba.els_cq &&
2533                     phba->sli4_hba.els_cq->queue_id == queid) {
2534                         /* Sanity check */
2535                         rc = lpfc_idiag_que_param_check(
2536                                         phba->sli4_hba.els_cq, index, count);
2537                         if (rc)
2538                                 goto error_out;
2539                         idiag.ptr_private = phba->sli4_hba.els_cq;
2540                         goto pass_check;
2541                 }
2542                 /* FCP complete queue */
2543                 if (phba->sli4_hba.fcp_cq) {
2544                         qidx = 0;
2545                         do {
2546                                 if (phba->sli4_hba.fcp_cq[qidx] &&
2547                                     phba->sli4_hba.fcp_cq[qidx]->queue_id ==
2548                                     queid) {
2549                                         /* Sanity check */
2550                                         rc = lpfc_idiag_que_param_check(
2551                                                 phba->sli4_hba.fcp_cq[qidx],
2552                                                 index, count);
2553                                         if (rc)
2554                                                 goto error_out;
2555                                         idiag.ptr_private =
2556                                                 phba->sli4_hba.fcp_cq[qidx];
2557                                         goto pass_check;
2558                                 }
2559                         } while (++qidx < phba->cfg_fcp_io_channel);
2560                 }
2561                 goto error_out;
2562                 break;
2563         case LPFC_IDIAG_MQ:
2564                 /* MBX work queue */
2565                 if (phba->sli4_hba.mbx_wq &&
2566                     phba->sli4_hba.mbx_wq->queue_id == queid) {
2567                         /* Sanity check */
2568                         rc = lpfc_idiag_que_param_check(
2569                                         phba->sli4_hba.mbx_wq, index, count);
2570                         if (rc)
2571                                 goto error_out;
2572                         idiag.ptr_private = phba->sli4_hba.mbx_wq;
2573                         goto pass_check;
2574                 }
2575                 goto error_out;
2576                 break;
2577         case LPFC_IDIAG_WQ:
2578                 /* ELS work queue */
2579                 if (phba->sli4_hba.els_wq &&
2580                     phba->sli4_hba.els_wq->queue_id == queid) {
2581                         /* Sanity check */
2582                         rc = lpfc_idiag_que_param_check(
2583                                         phba->sli4_hba.els_wq, index, count);
2584                         if (rc)
2585                                 goto error_out;
2586                         idiag.ptr_private = phba->sli4_hba.els_wq;
2587                         goto pass_check;
2588                 }
2589                 /* FCP work queue */
2590                 if (phba->sli4_hba.fcp_wq) {
2591                         for (qidx = 0; qidx < phba->cfg_fcp_io_channel;
2592                                 qidx++) {
2593                                 if (!phba->sli4_hba.fcp_wq[qidx])
2594                                         continue;
2595                                 if (phba->sli4_hba.fcp_wq[qidx]->queue_id ==
2596                                     queid) {
2597                                         /* Sanity check */
2598                                         rc = lpfc_idiag_que_param_check(
2599                                                 phba->sli4_hba.fcp_wq[qidx],
2600                                                 index, count);
2601                                         if (rc)
2602                                                 goto error_out;
2603                                         idiag.ptr_private =
2604                                                 phba->sli4_hba.fcp_wq[qidx];
2605                                         goto pass_check;
2606                                 }
2607                         }
2608                 }
2609                 goto error_out;
2610                 break;
2611         case LPFC_IDIAG_RQ:
2612                 /* HDR queue */
2613                 if (phba->sli4_hba.hdr_rq &&
2614                     phba->sli4_hba.hdr_rq->queue_id == queid) {
2615                         /* Sanity check */
2616                         rc = lpfc_idiag_que_param_check(
2617                                         phba->sli4_hba.hdr_rq, index, count);
2618                         if (rc)
2619                                 goto error_out;
2620                         idiag.ptr_private = phba->sli4_hba.hdr_rq;
2621                         goto pass_check;
2622                 }
2623                 /* DAT queue */
2624                 if (phba->sli4_hba.dat_rq &&
2625                     phba->sli4_hba.dat_rq->queue_id == queid) {
2626                         /* Sanity check */
2627                         rc = lpfc_idiag_que_param_check(
2628                                         phba->sli4_hba.dat_rq, index, count);
2629                         if (rc)
2630                                 goto error_out;
2631                         idiag.ptr_private = phba->sli4_hba.dat_rq;
2632                         goto pass_check;
2633                 }
2634                 goto error_out;
2635                 break;
2636         default:
2637                 goto error_out;
2638                 break;
2639         }
2640
2641 pass_check:
2642
2643         if (idiag.cmd.opcode == LPFC_IDIAG_CMD_QUEACC_RD) {
2644                 if (count == LPFC_QUE_ACC_BROWSE)
2645                         idiag.offset.last_rd = index;
2646         }
2647
2648         if (idiag.cmd.opcode == LPFC_IDIAG_CMD_QUEACC_WR ||
2649             idiag.cmd.opcode == LPFC_IDIAG_CMD_QUEACC_ST ||
2650             idiag.cmd.opcode == LPFC_IDIAG_CMD_QUEACC_CL) {
2651                 /* Additional sanity checks on write operation */
2652                 pque = (struct lpfc_queue *)idiag.ptr_private;
2653                 if (offset > pque->entry_size/sizeof(uint32_t) - 1)
2654                         goto error_out;
2655                 pentry = pque->qe[index].address;
2656                 pentry += offset;
2657                 if (idiag.cmd.opcode == LPFC_IDIAG_CMD_QUEACC_WR)
2658                         *pentry = value;
2659                 if (idiag.cmd.opcode == LPFC_IDIAG_CMD_QUEACC_ST)
2660                         *pentry |= value;
2661                 if (idiag.cmd.opcode == LPFC_IDIAG_CMD_QUEACC_CL)
2662                         *pentry &= ~value;
2663         }
2664         return nbytes;
2665
2666 error_out:
2667         /* Clean out command structure on command error out */
2668         memset(&idiag, 0, sizeof(idiag));
2669         return -EINVAL;
2670 }
2671
2672 /**
2673  * lpfc_idiag_drbacc_read_reg - idiag debugfs read a doorbell register
2674  * @phba: The pointer to hba structure.
2675  * @pbuffer: The pointer to the buffer to copy the data to.
2676  * @len: The lenght of bytes to copied.
2677  * @drbregid: The id to doorbell registers.
2678  *
2679  * Description:
2680  * This routine reads a doorbell register and copies its content to the
2681  * user buffer pointed to by @pbuffer.
2682  *
2683  * Returns:
2684  * This function returns the amount of data that was copied into @pbuffer.
2685  **/
2686 static int
2687 lpfc_idiag_drbacc_read_reg(struct lpfc_hba *phba, char *pbuffer,
2688                            int len, uint32_t drbregid)
2689 {
2690
2691         if (!pbuffer)
2692                 return 0;
2693
2694         switch (drbregid) {
2695         case LPFC_DRB_EQCQ:
2696                 len += snprintf(pbuffer+len, LPFC_DRB_ACC_BUF_SIZE-len,
2697                                 "EQCQ-DRB-REG: 0x%08x\n",
2698                                 readl(phba->sli4_hba.EQCQDBregaddr));
2699                 break;
2700         case LPFC_DRB_MQ:
2701                 len += snprintf(pbuffer+len, LPFC_DRB_ACC_BUF_SIZE-len,
2702                                 "MQ-DRB-REG:   0x%08x\n",
2703                                 readl(phba->sli4_hba.MQDBregaddr));
2704                 break;
2705         case LPFC_DRB_WQ:
2706                 len += snprintf(pbuffer+len, LPFC_DRB_ACC_BUF_SIZE-len,
2707                                 "WQ-DRB-REG:   0x%08x\n",
2708                                 readl(phba->sli4_hba.WQDBregaddr));
2709                 break;
2710         case LPFC_DRB_RQ:
2711                 len += snprintf(pbuffer+len, LPFC_DRB_ACC_BUF_SIZE-len,
2712                                 "RQ-DRB-REG:   0x%08x\n",
2713                                 readl(phba->sli4_hba.RQDBregaddr));
2714                 break;
2715         default:
2716                 break;
2717         }
2718
2719         return len;
2720 }
2721
2722 /**
2723  * lpfc_idiag_drbacc_read - idiag debugfs read port doorbell
2724  * @file: The file pointer to read from.
2725  * @buf: The buffer to copy the data to.
2726  * @nbytes: The number of bytes to read.
2727  * @ppos: The position in the file to start reading from.
2728  *
2729  * Description:
2730  * This routine reads data from the @phba device doorbell register according
2731  * to the idiag command, and copies to user @buf. Depending on the doorbell
2732  * register read command setup, it does either a single doorbell register
2733  * read or dump all doorbell registers.
2734  *
2735  * Returns:
2736  * This function returns the amount of data that was read (this could be less
2737  * than @nbytes if the end of the file was reached) or a negative error value.
2738  **/
2739 static ssize_t
2740 lpfc_idiag_drbacc_read(struct file *file, char __user *buf, size_t nbytes,
2741                        loff_t *ppos)
2742 {
2743         struct lpfc_debug *debug = file->private_data;
2744         struct lpfc_hba *phba = (struct lpfc_hba *)debug->i_private;
2745         uint32_t drb_reg_id, i;
2746         char *pbuffer;
2747         int len = 0;
2748
2749         /* This is a user read operation */
2750         debug->op = LPFC_IDIAG_OP_RD;
2751
2752         if (!debug->buffer)
2753                 debug->buffer = kmalloc(LPFC_DRB_ACC_BUF_SIZE, GFP_KERNEL);
2754         if (!debug->buffer)
2755                 return 0;
2756         pbuffer = debug->buffer;
2757
2758         if (*ppos)
2759                 return 0;
2760
2761         if (idiag.cmd.opcode == LPFC_IDIAG_CMD_DRBACC_RD)
2762                 drb_reg_id = idiag.cmd.data[IDIAG_DRBACC_REGID_INDX];
2763         else
2764                 return 0;
2765
2766         if (drb_reg_id == LPFC_DRB_ACC_ALL)
2767                 for (i = 1; i <= LPFC_DRB_MAX; i++)
2768                         len = lpfc_idiag_drbacc_read_reg(phba,
2769                                                          pbuffer, len, i);
2770         else
2771                 len = lpfc_idiag_drbacc_read_reg(phba,
2772                                                  pbuffer, len, drb_reg_id);
2773
2774         return simple_read_from_buffer(buf, nbytes, ppos, pbuffer, len);
2775 }
2776
2777 /**
2778  * lpfc_idiag_drbacc_write - Syntax check and set up idiag drbacc commands
2779  * @file: The file pointer to read from.
2780  * @buf: The buffer to copy the user data from.
2781  * @nbytes: The number of bytes to get.
2782  * @ppos: The position in the file to start reading from.
2783  *
2784  * This routine get the debugfs idiag command struct from user space and then
2785  * perform the syntax check for port doorbell register read (dump) or write
2786  * (set) command accordingly. In the case of port queue read command, it sets
2787  * up the command in the idiag command struct for the following debugfs read
2788  * operation. In the case of port doorbell register write operation, it
2789  * executes the write operation into the port doorbell register accordingly.
2790  *
2791  * It returns the @nbytges passing in from debugfs user space when successful.
2792  * In case of error conditions, it returns proper error code back to the user
2793  * space.
2794  **/
2795 static ssize_t
2796 lpfc_idiag_drbacc_write(struct file *file, const char __user *buf,
2797                         size_t nbytes, loff_t *ppos)
2798 {
2799         struct lpfc_debug *debug = file->private_data;
2800         struct lpfc_hba *phba = (struct lpfc_hba *)debug->i_private;
2801         uint32_t drb_reg_id, value, reg_val = 0;
2802         void __iomem *drb_reg;
2803         int rc;
2804
2805         /* This is a user write operation */
2806         debug->op = LPFC_IDIAG_OP_WR;
2807
2808         rc = lpfc_idiag_cmd_get(buf, nbytes, &idiag.cmd);
2809         if (rc < 0)
2810                 return rc;
2811
2812         /* Sanity check on command line arguments */
2813         drb_reg_id = idiag.cmd.data[IDIAG_DRBACC_REGID_INDX];
2814         value = idiag.cmd.data[IDIAG_DRBACC_VALUE_INDX];
2815
2816         if (idiag.cmd.opcode == LPFC_IDIAG_CMD_DRBACC_WR ||
2817             idiag.cmd.opcode == LPFC_IDIAG_CMD_DRBACC_ST ||
2818             idiag.cmd.opcode == LPFC_IDIAG_CMD_DRBACC_CL) {
2819                 if (rc != LPFC_DRB_ACC_WR_CMD_ARG)
2820                         goto error_out;
2821                 if (drb_reg_id > LPFC_DRB_MAX)
2822                         goto error_out;
2823         } else if (idiag.cmd.opcode == LPFC_IDIAG_CMD_DRBACC_RD) {
2824                 if (rc != LPFC_DRB_ACC_RD_CMD_ARG)
2825                         goto error_out;
2826                 if ((drb_reg_id > LPFC_DRB_MAX) &&
2827                     (drb_reg_id != LPFC_DRB_ACC_ALL))
2828                         goto error_out;
2829         } else
2830                 goto error_out;
2831
2832         /* Perform the write access operation */
2833         if (idiag.cmd.opcode == LPFC_IDIAG_CMD_DRBACC_WR ||
2834             idiag.cmd.opcode == LPFC_IDIAG_CMD_DRBACC_ST ||
2835             idiag.cmd.opcode == LPFC_IDIAG_CMD_DRBACC_CL) {
2836                 switch (drb_reg_id) {
2837                 case LPFC_DRB_EQCQ:
2838                         drb_reg = phba->sli4_hba.EQCQDBregaddr;
2839                         break;
2840                 case LPFC_DRB_MQ:
2841                         drb_reg = phba->sli4_hba.MQDBregaddr;
2842                         break;
2843                 case LPFC_DRB_WQ:
2844                         drb_reg = phba->sli4_hba.WQDBregaddr;
2845                         break;
2846                 case LPFC_DRB_RQ:
2847                         drb_reg = phba->sli4_hba.RQDBregaddr;
2848                         break;
2849                 default:
2850                         goto error_out;
2851                 }
2852
2853                 if (idiag.cmd.opcode == LPFC_IDIAG_CMD_DRBACC_WR)
2854                         reg_val = value;
2855                 if (idiag.cmd.opcode == LPFC_IDIAG_CMD_DRBACC_ST) {
2856                         reg_val = readl(drb_reg);
2857                         reg_val |= value;
2858                 }
2859                 if (idiag.cmd.opcode == LPFC_IDIAG_CMD_DRBACC_CL) {
2860                         reg_val = readl(drb_reg);
2861                         reg_val &= ~value;
2862                 }
2863                 writel(reg_val, drb_reg);
2864                 readl(drb_reg); /* flush */
2865         }
2866         return nbytes;
2867
2868 error_out:
2869         /* Clean out command structure on command error out */
2870         memset(&idiag, 0, sizeof(idiag));
2871         return -EINVAL;
2872 }
2873
2874 /**
2875  * lpfc_idiag_ctlacc_read_reg - idiag debugfs read a control registers
2876  * @phba: The pointer to hba structure.
2877  * @pbuffer: The pointer to the buffer to copy the data to.
2878  * @len: The lenght of bytes to copied.
2879  * @drbregid: The id to doorbell registers.
2880  *
2881  * Description:
2882  * This routine reads a control register and copies its content to the
2883  * user buffer pointed to by @pbuffer.
2884  *
2885  * Returns:
2886  * This function returns the amount of data that was copied into @pbuffer.
2887  **/
2888 static int
2889 lpfc_idiag_ctlacc_read_reg(struct lpfc_hba *phba, char *pbuffer,
2890                            int len, uint32_t ctlregid)
2891 {
2892
2893         if (!pbuffer)
2894                 return 0;
2895
2896         switch (ctlregid) {
2897         case LPFC_CTL_PORT_SEM:
2898                 len += snprintf(pbuffer+len, LPFC_CTL_ACC_BUF_SIZE-len,
2899                                 "Port SemReg:   0x%08x\n",
2900                                 readl(phba->sli4_hba.conf_regs_memmap_p +
2901                                       LPFC_CTL_PORT_SEM_OFFSET));
2902                 break;
2903         case LPFC_CTL_PORT_STA:
2904                 len += snprintf(pbuffer+len, LPFC_CTL_ACC_BUF_SIZE-len,
2905                                 "Port StaReg:   0x%08x\n",
2906                                 readl(phba->sli4_hba.conf_regs_memmap_p +
2907                                       LPFC_CTL_PORT_STA_OFFSET));
2908                 break;
2909         case LPFC_CTL_PORT_CTL:
2910                 len += snprintf(pbuffer+len, LPFC_CTL_ACC_BUF_SIZE-len,
2911                                 "Port CtlReg:   0x%08x\n",
2912                                 readl(phba->sli4_hba.conf_regs_memmap_p +
2913                                       LPFC_CTL_PORT_CTL_OFFSET));
2914                 break;
2915         case LPFC_CTL_PORT_ER1:
2916                 len += snprintf(pbuffer+len, LPFC_CTL_ACC_BUF_SIZE-len,
2917                                 "Port Er1Reg:   0x%08x\n",
2918                                 readl(phba->sli4_hba.conf_regs_memmap_p +
2919                                       LPFC_CTL_PORT_ER1_OFFSET));
2920                 break;
2921         case LPFC_CTL_PORT_ER2:
2922                 len += snprintf(pbuffer+len, LPFC_CTL_ACC_BUF_SIZE-len,
2923                                 "Port Er2Reg:   0x%08x\n",
2924                                 readl(phba->sli4_hba.conf_regs_memmap_p +
2925                                       LPFC_CTL_PORT_ER2_OFFSET));
2926                 break;
2927         case LPFC_CTL_PDEV_CTL:
2928                 len += snprintf(pbuffer+len, LPFC_CTL_ACC_BUF_SIZE-len,
2929                                 "PDev CtlReg:   0x%08x\n",
2930                                 readl(phba->sli4_hba.conf_regs_memmap_p +
2931                                       LPFC_CTL_PDEV_CTL_OFFSET));
2932                 break;
2933         default:
2934                 break;
2935         }
2936         return len;
2937 }
2938
2939 /**
2940  * lpfc_idiag_ctlacc_read - idiag debugfs read port and device control register
2941  * @file: The file pointer to read from.
2942  * @buf: The buffer to copy the data to.
2943  * @nbytes: The number of bytes to read.
2944  * @ppos: The position in the file to start reading from.
2945  *
2946  * Description:
2947  * This routine reads data from the @phba port and device registers according
2948  * to the idiag command, and copies to user @buf.
2949  *
2950  * Returns:
2951  * This function returns the amount of data that was read (this could be less
2952  * than @nbytes if the end of the file was reached) or a negative error value.
2953  **/
2954 static ssize_t
2955 lpfc_idiag_ctlacc_read(struct file *file, char __user *buf, size_t nbytes,
2956                        loff_t *ppos)
2957 {
2958         struct lpfc_debug *debug = file->private_data;
2959         struct lpfc_hba *phba = (struct lpfc_hba *)debug->i_private;
2960         uint32_t ctl_reg_id, i;
2961         char *pbuffer;
2962         int len = 0;
2963
2964         /* This is a user read operation */
2965         debug->op = LPFC_IDIAG_OP_RD;
2966
2967         if (!debug->buffer)
2968                 debug->buffer = kmalloc(LPFC_CTL_ACC_BUF_SIZE, GFP_KERNEL);
2969         if (!debug->buffer)
2970                 return 0;
2971         pbuffer = debug->buffer;
2972
2973         if (*ppos)
2974                 return 0;
2975
2976         if (idiag.cmd.opcode == LPFC_IDIAG_CMD_CTLACC_RD)
2977                 ctl_reg_id = idiag.cmd.data[IDIAG_CTLACC_REGID_INDX];
2978         else
2979                 return 0;
2980
2981         if (ctl_reg_id == LPFC_CTL_ACC_ALL)
2982                 for (i = 1; i <= LPFC_CTL_MAX; i++)
2983                         len = lpfc_idiag_ctlacc_read_reg(phba,
2984                                                          pbuffer, len, i);
2985         else
2986                 len = lpfc_idiag_ctlacc_read_reg(phba,
2987                                                  pbuffer, len, ctl_reg_id);
2988
2989         return simple_read_from_buffer(buf, nbytes, ppos, pbuffer, len);
2990 }
2991
2992 /**
2993  * lpfc_idiag_ctlacc_write - Syntax check and set up idiag ctlacc commands
2994  * @file: The file pointer to read from.
2995  * @buf: The buffer to copy the user data from.
2996  * @nbytes: The number of bytes to get.
2997  * @ppos: The position in the file to start reading from.
2998  *
2999  * This routine get the debugfs idiag command struct from user space and then
3000  * perform the syntax check for port and device control register read (dump)
3001  * or write (set) command accordingly.
3002  *
3003  * It returns the @nbytges passing in from debugfs user space when successful.
3004  * In case of error conditions, it returns proper error code back to the user
3005  * space.
3006  **/
3007 static ssize_t
3008 lpfc_idiag_ctlacc_write(struct file *file, const char __user *buf,
3009                         size_t nbytes, loff_t *ppos)
3010 {
3011         struct lpfc_debug *debug = file->private_data;
3012         struct lpfc_hba *phba = (struct lpfc_hba *)debug->i_private;
3013         uint32_t ctl_reg_id, value, reg_val = 0;
3014         void __iomem *ctl_reg;
3015         int rc;
3016
3017         /* This is a user write operation */
3018         debug->op = LPFC_IDIAG_OP_WR;
3019
3020         rc = lpfc_idiag_cmd_get(buf, nbytes, &idiag.cmd);
3021         if (rc < 0)
3022                 return rc;
3023
3024         /* Sanity check on command line arguments */
3025         ctl_reg_id = idiag.cmd.data[IDIAG_CTLACC_REGID_INDX];
3026         value = idiag.cmd.data[IDIAG_CTLACC_VALUE_INDX];
3027
3028         if (idiag.cmd.opcode == LPFC_IDIAG_CMD_CTLACC_WR ||
3029             idiag.cmd.opcode == LPFC_IDIAG_CMD_CTLACC_ST ||
3030             idiag.cmd.opcode == LPFC_IDIAG_CMD_CTLACC_CL) {
3031                 if (rc != LPFC_CTL_ACC_WR_CMD_ARG)
3032                         goto error_out;
3033                 if (ctl_reg_id > LPFC_CTL_MAX)
3034                         goto error_out;
3035         } else if (idiag.cmd.opcode == LPFC_IDIAG_CMD_CTLACC_RD) {
3036                 if (rc != LPFC_CTL_ACC_RD_CMD_ARG)
3037                         goto error_out;
3038                 if ((ctl_reg_id > LPFC_CTL_MAX) &&
3039                     (ctl_reg_id != LPFC_CTL_ACC_ALL))
3040                         goto error_out;
3041         } else
3042                 goto error_out;
3043
3044         /* Perform the write access operation */
3045         if (idiag.cmd.opcode == LPFC_IDIAG_CMD_CTLACC_WR ||
3046             idiag.cmd.opcode == LPFC_IDIAG_CMD_CTLACC_ST ||
3047             idiag.cmd.opcode == LPFC_IDIAG_CMD_CTLACC_CL) {
3048                 switch (ctl_reg_id) {
3049                 case LPFC_CTL_PORT_SEM:
3050                         ctl_reg = phba->sli4_hba.conf_regs_memmap_p +
3051                                         LPFC_CTL_PORT_SEM_OFFSET;
3052                         break;
3053                 case LPFC_CTL_PORT_STA:
3054                         ctl_reg = phba->sli4_hba.conf_regs_memmap_p +
3055                                         LPFC_CTL_PORT_STA_OFFSET;
3056                         break;
3057                 case LPFC_CTL_PORT_CTL:
3058                         ctl_reg = phba->sli4_hba.conf_regs_memmap_p +
3059                                         LPFC_CTL_PORT_CTL_OFFSET;
3060                         break;
3061                 case LPFC_CTL_PORT_ER1:
3062                         ctl_reg = phba->sli4_hba.conf_regs_memmap_p +
3063                                         LPFC_CTL_PORT_ER1_OFFSET;
3064                         break;
3065                 case LPFC_CTL_PORT_ER2:
3066                         ctl_reg = phba->sli4_hba.conf_regs_memmap_p +
3067                                         LPFC_CTL_PORT_ER2_OFFSET;
3068                         break;
3069                 case LPFC_CTL_PDEV_CTL:
3070                         ctl_reg = phba->sli4_hba.conf_regs_memmap_p +
3071                                         LPFC_CTL_PDEV_CTL_OFFSET;
3072                         break;
3073                 default:
3074                         goto error_out;
3075                 }
3076
3077                 if (idiag.cmd.opcode == LPFC_IDIAG_CMD_CTLACC_WR)
3078                         reg_val = value;
3079                 if (idiag.cmd.opcode == LPFC_IDIAG_CMD_CTLACC_ST) {
3080                         reg_val = readl(ctl_reg);
3081                         reg_val |= value;
3082                 }
3083                 if (idiag.cmd.opcode == LPFC_IDIAG_CMD_CTLACC_CL) {
3084                         reg_val = readl(ctl_reg);
3085                         reg_val &= ~value;
3086                 }
3087                 writel(reg_val, ctl_reg);
3088                 readl(ctl_reg); /* flush */
3089         }
3090         return nbytes;
3091
3092 error_out:
3093         /* Clean out command structure on command error out */
3094         memset(&idiag, 0, sizeof(idiag));
3095         return -EINVAL;
3096 }
3097
3098 /**
3099  * lpfc_idiag_mbxacc_get_setup - idiag debugfs get mailbox access setup
3100  * @phba: Pointer to HBA context object.
3101  * @pbuffer: Pointer to data buffer.
3102  *
3103  * Description:
3104  * This routine gets the driver mailbox access debugfs setup information.
3105  *
3106  * Returns:
3107  * This function returns the amount of data that was read (this could be less
3108  * than @nbytes if the end of the file was reached) or a negative error value.
3109  **/
3110 static int
3111 lpfc_idiag_mbxacc_get_setup(struct lpfc_hba *phba, char *pbuffer)
3112 {
3113         uint32_t mbx_dump_map, mbx_dump_cnt, mbx_word_cnt, mbx_mbox_cmd;
3114         int len = 0;
3115
3116         mbx_mbox_cmd = idiag.cmd.data[IDIAG_MBXACC_MBCMD_INDX];
3117         mbx_dump_map = idiag.cmd.data[IDIAG_MBXACC_DPMAP_INDX];
3118         mbx_dump_cnt = idiag.cmd.data[IDIAG_MBXACC_DPCNT_INDX];
3119         mbx_word_cnt = idiag.cmd.data[IDIAG_MBXACC_WDCNT_INDX];
3120
3121         len += snprintf(pbuffer+len, LPFC_MBX_ACC_BUF_SIZE-len,
3122                         "mbx_dump_map: 0x%08x\n", mbx_dump_map);
3123         len += snprintf(pbuffer+len, LPFC_MBX_ACC_BUF_SIZE-len,
3124                         "mbx_dump_cnt: %04d\n", mbx_dump_cnt);
3125         len += snprintf(pbuffer+len, LPFC_MBX_ACC_BUF_SIZE-len,
3126                         "mbx_word_cnt: %04d\n", mbx_word_cnt);
3127         len += snprintf(pbuffer+len, LPFC_MBX_ACC_BUF_SIZE-len,
3128                         "mbx_mbox_cmd: 0x%02x\n", mbx_mbox_cmd);
3129
3130         return len;
3131 }
3132
3133 /**
3134  * lpfc_idiag_mbxacc_read - idiag debugfs read on mailbox access
3135  * @file: The file pointer to read from.
3136  * @buf: The buffer to copy the data to.
3137  * @nbytes: The number of bytes to read.
3138  * @ppos: The position in the file to start reading from.
3139  *
3140  * Description:
3141  * This routine reads data from the @phba driver mailbox access debugfs setup
3142  * information.
3143  *
3144  * Returns:
3145  * This function returns the amount of data that was read (this could be less
3146  * than @nbytes if the end of the file was reached) or a negative error value.
3147  **/
3148 static ssize_t
3149 lpfc_idiag_mbxacc_read(struct file *file, char __user *buf, size_t nbytes,
3150                        loff_t *ppos)
3151 {
3152         struct lpfc_debug *debug = file->private_data;
3153         struct lpfc_hba *phba = (struct lpfc_hba *)debug->i_private;
3154         char *pbuffer;
3155         int len = 0;
3156
3157         /* This is a user read operation */
3158         debug->op = LPFC_IDIAG_OP_RD;
3159
3160         if (!debug->buffer)
3161                 debug->buffer = kmalloc(LPFC_MBX_ACC_BUF_SIZE, GFP_KERNEL);
3162         if (!debug->buffer)
3163                 return 0;
3164         pbuffer = debug->buffer;
3165
3166         if (*ppos)
3167                 return 0;
3168
3169         if ((idiag.cmd.opcode != LPFC_IDIAG_CMD_MBXACC_DP) &&
3170             (idiag.cmd.opcode != LPFC_IDIAG_BSG_MBXACC_DP))
3171                 return 0;
3172
3173         len = lpfc_idiag_mbxacc_get_setup(phba, pbuffer);
3174
3175         return simple_read_from_buffer(buf, nbytes, ppos, pbuffer, len);
3176 }
3177
3178 /**
3179  * lpfc_idiag_mbxacc_write - Syntax check and set up idiag mbxacc commands
3180  * @file: The file pointer to read from.
3181  * @buf: The buffer to copy the user data from.
3182  * @nbytes: The number of bytes to get.
3183  * @ppos: The position in the file to start reading from.
3184  *
3185  * This routine get the debugfs idiag command struct from user space and then
3186  * perform the syntax check for driver mailbox command (dump) and sets up the
3187  * necessary states in the idiag command struct accordingly.
3188  *
3189  * It returns the @nbytges passing in from debugfs user space when successful.
3190  * In case of error conditions, it returns proper error code back to the user
3191  * space.
3192  **/
3193 static ssize_t
3194 lpfc_idiag_mbxacc_write(struct file *file, const char __user *buf,
3195                         size_t nbytes, loff_t *ppos)
3196 {
3197         struct lpfc_debug *debug = file->private_data;
3198         uint32_t mbx_dump_map, mbx_dump_cnt, mbx_word_cnt, mbx_mbox_cmd;
3199         int rc;
3200
3201         /* This is a user write operation */
3202         debug->op = LPFC_IDIAG_OP_WR;
3203
3204         rc = lpfc_idiag_cmd_get(buf, nbytes, &idiag.cmd);
3205         if (rc < 0)
3206                 return rc;
3207
3208         /* Sanity check on command line arguments */
3209         mbx_mbox_cmd = idiag.cmd.data[IDIAG_MBXACC_MBCMD_INDX];
3210         mbx_dump_map = idiag.cmd.data[IDIAG_MBXACC_DPMAP_INDX];
3211         mbx_dump_cnt = idiag.cmd.data[IDIAG_MBXACC_DPCNT_INDX];
3212         mbx_word_cnt = idiag.cmd.data[IDIAG_MBXACC_WDCNT_INDX];
3213
3214         if (idiag.cmd.opcode == LPFC_IDIAG_CMD_MBXACC_DP) {
3215                 if (!(mbx_dump_map & LPFC_MBX_DMP_MBX_ALL))
3216                         goto error_out;
3217                 if ((mbx_dump_map & ~LPFC_MBX_DMP_MBX_ALL) &&
3218                     (mbx_dump_map != LPFC_MBX_DMP_ALL))
3219                         goto error_out;
3220                 if (mbx_word_cnt > sizeof(MAILBOX_t))
3221                         goto error_out;
3222         } else if (idiag.cmd.opcode == LPFC_IDIAG_BSG_MBXACC_DP) {
3223                 if (!(mbx_dump_map & LPFC_BSG_DMP_MBX_ALL))
3224                         goto error_out;
3225                 if ((mbx_dump_map & ~LPFC_BSG_DMP_MBX_ALL) &&
3226                     (mbx_dump_map != LPFC_MBX_DMP_ALL))
3227                         goto error_out;
3228                 if (mbx_word_cnt > (BSG_MBOX_SIZE)/4)
3229                         goto error_out;
3230                 if (mbx_mbox_cmd != 0x9b)
3231                         goto error_out;
3232         } else
3233                 goto error_out;
3234
3235         if (mbx_word_cnt == 0)
3236                 goto error_out;
3237         if (rc != LPFC_MBX_DMP_ARG)
3238                 goto error_out;
3239         if (mbx_mbox_cmd & ~0xff)
3240                 goto error_out;
3241
3242         /* condition for stop mailbox dump */
3243         if (mbx_dump_cnt == 0)
3244                 goto reset_out;
3245
3246         return nbytes;
3247
3248 reset_out:
3249         /* Clean out command structure on command error out */
3250         memset(&idiag, 0, sizeof(idiag));
3251         return nbytes;
3252
3253 error_out:
3254         /* Clean out command structure on command error out */
3255         memset(&idiag, 0, sizeof(idiag));
3256         return -EINVAL;
3257 }
3258
3259 /**
3260  * lpfc_idiag_extacc_avail_get - get the available extents information
3261  * @phba: pointer to lpfc hba data structure.
3262  * @pbuffer: pointer to internal buffer.
3263  * @len: length into the internal buffer data has been copied.
3264  *
3265  * Description:
3266  * This routine is to get the available extent information.
3267  *
3268  * Returns:
3269  * overall lenth of the data read into the internal buffer.
3270  **/
3271 static int
3272 lpfc_idiag_extacc_avail_get(struct lpfc_hba *phba, char *pbuffer, int len)
3273 {
3274         uint16_t ext_cnt, ext_size;
3275
3276         len += snprintf(pbuffer+len, LPFC_EXT_ACC_BUF_SIZE-len,
3277                         "\nAvailable Extents Information:\n");
3278
3279         len += snprintf(pbuffer+len, LPFC_EXT_ACC_BUF_SIZE-len,
3280                         "\tPort Available VPI extents: ");
3281         lpfc_sli4_get_avail_extnt_rsrc(phba, LPFC_RSC_TYPE_FCOE_VPI,
3282                                        &ext_cnt, &ext_size);
3283         len += snprintf(pbuffer+len, LPFC_EXT_ACC_BUF_SIZE-len,
3284                         "Count %3d, Size %3d\n", ext_cnt, ext_size);
3285
3286         len += snprintf(pbuffer+len, LPFC_EXT_ACC_BUF_SIZE-len,
3287                         "\tPort Available VFI extents: ");
3288         lpfc_sli4_get_avail_extnt_rsrc(phba, LPFC_RSC_TYPE_FCOE_VFI,
3289                                        &ext_cnt, &ext_size);
3290         len += snprintf(pbuffer+len, LPFC_EXT_ACC_BUF_SIZE-len,
3291                         "Count %3d, Size %3d\n", ext_cnt, ext_size);
3292
3293         len += snprintf(pbuffer+len, LPFC_EXT_ACC_BUF_SIZE-len,
3294                         "\tPort Available RPI extents: ");
3295         lpfc_sli4_get_avail_extnt_rsrc(phba, LPFC_RSC_TYPE_FCOE_RPI,
3296                                        &ext_cnt, &ext_size);
3297         len += snprintf(pbuffer+len, LPFC_EXT_ACC_BUF_SIZE-len,
3298                         "Count %3d, Size %3d\n", ext_cnt, ext_size);
3299
3300         len += snprintf(pbuffer+len, LPFC_EXT_ACC_BUF_SIZE-len,
3301                         "\tPort Available XRI extents: ");
3302         lpfc_sli4_get_avail_extnt_rsrc(phba, LPFC_RSC_TYPE_FCOE_XRI,
3303                                        &ext_cnt, &ext_size);
3304         len += snprintf(pbuffer+len, LPFC_EXT_ACC_BUF_SIZE-len,
3305                         "Count %3d, Size %3d\n", ext_cnt, ext_size);
3306
3307         return len;
3308 }
3309
3310 /**
3311  * lpfc_idiag_extacc_alloc_get - get the allocated extents information
3312  * @phba: pointer to lpfc hba data structure.
3313  * @pbuffer: pointer to internal buffer.
3314  * @len: length into the internal buffer data has been copied.
3315  *
3316  * Description:
3317  * This routine is to get the allocated extent information.
3318  *
3319  * Returns:
3320  * overall lenth of the data read into the internal buffer.
3321  **/
3322 static int
3323 lpfc_idiag_extacc_alloc_get(struct lpfc_hba *phba, char *pbuffer, int len)
3324 {
3325         uint16_t ext_cnt, ext_size;
3326         int rc;
3327
3328         len += snprintf(pbuffer+len, LPFC_EXT_ACC_BUF_SIZE-len,
3329                         "\nAllocated Extents Information:\n");
3330
3331         len += snprintf(pbuffer+len, LPFC_EXT_ACC_BUF_SIZE-len,
3332                         "\tHost Allocated VPI extents: ");
3333         rc = lpfc_sli4_get_allocated_extnts(phba, LPFC_RSC_TYPE_FCOE_VPI,
3334                                             &ext_cnt, &ext_size);
3335         if (!rc)
3336                 len += snprintf(pbuffer+len, LPFC_EXT_ACC_BUF_SIZE-len,
3337                                 "Port %d Extent %3d, Size %3d\n",
3338                                 phba->brd_no, ext_cnt, ext_size);
3339         else
3340                 len += snprintf(pbuffer+len, LPFC_EXT_ACC_BUF_SIZE-len,
3341                                 "N/A\n");
3342
3343         len += snprintf(pbuffer+len, LPFC_EXT_ACC_BUF_SIZE-len,
3344                         "\tHost Allocated VFI extents: ");
3345         rc = lpfc_sli4_get_allocated_extnts(phba, LPFC_RSC_TYPE_FCOE_VFI,
3346                                             &ext_cnt, &ext_size);
3347         if (!rc)
3348                 len += snprintf(pbuffer+len, LPFC_EXT_ACC_BUF_SIZE-len,
3349                                 "Port %d Extent %3d, Size %3d\n",
3350                                 phba->brd_no, ext_cnt, ext_size);
3351         else
3352                 len += snprintf(pbuffer+len, LPFC_EXT_ACC_BUF_SIZE-len,
3353                                 "N/A\n");
3354
3355         len += snprintf(pbuffer+len, LPFC_EXT_ACC_BUF_SIZE-len,
3356                         "\tHost Allocated RPI extents: ");
3357         rc = lpfc_sli4_get_allocated_extnts(phba, LPFC_RSC_TYPE_FCOE_RPI,
3358                                             &ext_cnt, &ext_size);
3359         if (!rc)
3360                 len += snprintf(pbuffer+len, LPFC_EXT_ACC_BUF_SIZE-len,
3361                                 "Port %d Extent %3d, Size %3d\n",
3362                                 phba->brd_no, ext_cnt, ext_size);
3363         else
3364                 len += snprintf(pbuffer+len, LPFC_EXT_ACC_BUF_SIZE-len,
3365                                 "N/A\n");
3366
3367         len += snprintf(pbuffer+len, LPFC_EXT_ACC_BUF_SIZE-len,
3368                         "\tHost Allocated XRI extents: ");
3369         rc = lpfc_sli4_get_allocated_extnts(phba, LPFC_RSC_TYPE_FCOE_XRI,
3370                                             &ext_cnt, &ext_size);
3371         if (!rc)
3372                 len += snprintf(pbuffer+len, LPFC_EXT_ACC_BUF_SIZE-len,
3373                                 "Port %d Extent %3d, Size %3d\n",
3374                                 phba->brd_no, ext_cnt, ext_size);
3375         else
3376                 len += snprintf(pbuffer+len, LPFC_EXT_ACC_BUF_SIZE-len,
3377                                 "N/A\n");
3378
3379         return len;
3380 }
3381
3382 /**
3383  * lpfc_idiag_extacc_drivr_get - get driver extent information
3384  * @phba: pointer to lpfc hba data structure.
3385  * @pbuffer: pointer to internal buffer.
3386  * @len: length into the internal buffer data has been copied.
3387  *
3388  * Description:
3389  * This routine is to get the driver extent information.
3390  *
3391  * Returns:
3392  * overall lenth of the data read into the internal buffer.
3393  **/
3394 static int
3395 lpfc_idiag_extacc_drivr_get(struct lpfc_hba *phba, char *pbuffer, int len)
3396 {
3397         struct lpfc_rsrc_blks *rsrc_blks;
3398         int index;
3399
3400         len += snprintf(pbuffer+len, LPFC_EXT_ACC_BUF_SIZE-len,
3401                         "\nDriver Extents Information:\n");
3402
3403         len += snprintf(pbuffer+len, LPFC_EXT_ACC_BUF_SIZE-len,
3404                         "\tVPI extents:\n");
3405         index = 0;
3406         list_for_each_entry(rsrc_blks, &phba->lpfc_vpi_blk_list, list) {
3407                 len += snprintf(pbuffer+len, LPFC_EXT_ACC_BUF_SIZE-len,
3408                                 "\t\tBlock %3d: Start %4d, Count %4d\n",
3409                                 index, rsrc_blks->rsrc_start,
3410                                 rsrc_blks->rsrc_size);
3411                 index++;
3412         }
3413         len += snprintf(pbuffer+len, LPFC_EXT_ACC_BUF_SIZE-len,
3414                         "\tVFI extents:\n");
3415         index = 0;
3416         list_for_each_entry(rsrc_blks, &phba->sli4_hba.lpfc_vfi_blk_list,
3417                             list) {
3418                 len += snprintf(pbuffer+len, LPFC_EXT_ACC_BUF_SIZE-len,
3419                                 "\t\tBlock %3d: Start %4d, Count %4d\n",
3420                                 index, rsrc_blks->rsrc_start,
3421                                 rsrc_blks->rsrc_size);
3422                 index++;
3423         }
3424
3425         len += snprintf(pbuffer+len, LPFC_EXT_ACC_BUF_SIZE-len,
3426                         "\tRPI extents:\n");
3427         index = 0;
3428         list_for_each_entry(rsrc_blks, &phba->sli4_hba.lpfc_rpi_blk_list,
3429                             list) {
3430                 len += snprintf(pbuffer+len, LPFC_EXT_ACC_BUF_SIZE-len,
3431                                 "\t\tBlock %3d: Start %4d, Count %4d\n",
3432                                 index, rsrc_blks->rsrc_start,
3433                                 rsrc_blks->rsrc_size);
3434                 index++;
3435         }
3436
3437         len += snprintf(pbuffer+len, LPFC_EXT_ACC_BUF_SIZE-len,
3438                         "\tXRI extents:\n");
3439         index = 0;
3440         list_for_each_entry(rsrc_blks, &phba->sli4_hba.lpfc_xri_blk_list,
3441                             list) {
3442                 len += snprintf(pbuffer+len, LPFC_EXT_ACC_BUF_SIZE-len,
3443                                 "\t\tBlock %3d: Start %4d, Count %4d\n",
3444                                 index, rsrc_blks->rsrc_start,
3445                                 rsrc_blks->rsrc_size);
3446                 index++;
3447         }
3448
3449         return len;
3450 }
3451
3452 /**
3453  * lpfc_idiag_extacc_write - Syntax check and set up idiag extacc commands
3454  * @file: The file pointer to read from.
3455  * @buf: The buffer to copy the user data from.
3456  * @nbytes: The number of bytes to get.
3457  * @ppos: The position in the file to start reading from.
3458  *
3459  * This routine get the debugfs idiag command struct from user space and then
3460  * perform the syntax check for extent information access commands and sets
3461  * up the necessary states in the idiag command struct accordingly.
3462  *
3463  * It returns the @nbytges passing in from debugfs user space when successful.
3464  * In case of error conditions, it returns proper error code back to the user
3465  * space.
3466  **/
3467 static ssize_t
3468 lpfc_idiag_extacc_write(struct file *file, const char __user *buf,
3469                         size_t nbytes, loff_t *ppos)
3470 {
3471         struct lpfc_debug *debug = file->private_data;
3472         uint32_t ext_map;
3473         int rc;
3474
3475         /* This is a user write operation */
3476         debug->op = LPFC_IDIAG_OP_WR;
3477
3478         rc = lpfc_idiag_cmd_get(buf, nbytes, &idiag.cmd);
3479         if (rc < 0)
3480                 return rc;
3481
3482         ext_map = idiag.cmd.data[IDIAG_EXTACC_EXMAP_INDX];
3483
3484         if (idiag.cmd.opcode != LPFC_IDIAG_CMD_EXTACC_RD)
3485                 goto error_out;
3486         if (rc != LPFC_EXT_ACC_CMD_ARG)
3487                 goto error_out;
3488         if (!(ext_map & LPFC_EXT_ACC_ALL))
3489                 goto error_out;
3490
3491         return nbytes;
3492 error_out:
3493         /* Clean out command structure on command error out */
3494         memset(&idiag, 0, sizeof(idiag));
3495         return -EINVAL;
3496 }
3497
3498 /**
3499  * lpfc_idiag_extacc_read - idiag debugfs read access to extent information
3500  * @file: The file pointer to read from.
3501  * @buf: The buffer to copy the data to.
3502  * @nbytes: The number of bytes to read.
3503  * @ppos: The position in the file to start reading from.
3504  *
3505  * Description:
3506  * This routine reads data from the proper extent information according to
3507  * the idiag command, and copies to user @buf.
3508  *
3509  * Returns:
3510  * This function returns the amount of data that was read (this could be less
3511  * than @nbytes if the end of the file was reached) or a negative error value.
3512  **/
3513 static ssize_t
3514 lpfc_idiag_extacc_read(struct file *file, char __user *buf, size_t nbytes,
3515                        loff_t *ppos)
3516 {
3517         struct lpfc_debug *debug = file->private_data;
3518         struct lpfc_hba *phba = (struct lpfc_hba *)debug->i_private;
3519         char *pbuffer;
3520         uint32_t ext_map;
3521         int len = 0;
3522
3523         /* This is a user read operation */
3524         debug->op = LPFC_IDIAG_OP_RD;
3525
3526         if (!debug->buffer)
3527                 debug->buffer = kmalloc(LPFC_EXT_ACC_BUF_SIZE, GFP_KERNEL);
3528         if (!debug->buffer)
3529                 return 0;
3530         pbuffer = debug->buffer;
3531         if (*ppos)
3532                 return 0;
3533         if (idiag.cmd.opcode != LPFC_IDIAG_CMD_EXTACC_RD)
3534                 return 0;
3535
3536         ext_map = idiag.cmd.data[IDIAG_EXTACC_EXMAP_INDX];
3537         if (ext_map & LPFC_EXT_ACC_AVAIL)
3538                 len = lpfc_idiag_extacc_avail_get(phba, pbuffer, len);
3539         if (ext_map & LPFC_EXT_ACC_ALLOC)
3540                 len = lpfc_idiag_extacc_alloc_get(phba, pbuffer, len);
3541         if (ext_map & LPFC_EXT_ACC_DRIVR)
3542                 len = lpfc_idiag_extacc_drivr_get(phba, pbuffer, len);
3543
3544         return simple_read_from_buffer(buf, nbytes, ppos, pbuffer, len);
3545 }
3546
3547 #undef lpfc_debugfs_op_disc_trc
3548 static const struct file_operations lpfc_debugfs_op_disc_trc = {
3549         .owner =        THIS_MODULE,
3550         .open =         lpfc_debugfs_disc_trc_open,
3551         .llseek =       lpfc_debugfs_lseek,
3552         .read =         lpfc_debugfs_read,
3553         .release =      lpfc_debugfs_release,
3554 };
3555
3556 #undef lpfc_debugfs_op_nodelist
3557 static const struct file_operations lpfc_debugfs_op_nodelist = {
3558         .owner =        THIS_MODULE,
3559         .open =         lpfc_debugfs_nodelist_open,
3560         .llseek =       lpfc_debugfs_lseek,
3561         .read =         lpfc_debugfs_read,
3562         .release =      lpfc_debugfs_release,
3563 };
3564
3565 #undef lpfc_debugfs_op_hbqinfo
3566 static const struct file_operations lpfc_debugfs_op_hbqinfo = {
3567         .owner =        THIS_MODULE,
3568         .open =         lpfc_debugfs_hbqinfo_open,
3569         .llseek =       lpfc_debugfs_lseek,
3570         .read =         lpfc_debugfs_read,
3571         .release =      lpfc_debugfs_release,
3572 };
3573
3574 #undef lpfc_debugfs_op_dumpHBASlim
3575 static const struct file_operations lpfc_debugfs_op_dumpHBASlim = {
3576         .owner =        THIS_MODULE,
3577         .open =         lpfc_debugfs_dumpHBASlim_open,
3578         .llseek =       lpfc_debugfs_lseek,
3579         .read =         lpfc_debugfs_read,
3580         .release =      lpfc_debugfs_release,
3581 };
3582
3583 #undef lpfc_debugfs_op_dumpHostSlim
3584 static const struct file_operations lpfc_debugfs_op_dumpHostSlim = {
3585         .owner =        THIS_MODULE,
3586         .open =         lpfc_debugfs_dumpHostSlim_open,
3587         .llseek =       lpfc_debugfs_lseek,
3588         .read =         lpfc_debugfs_read,
3589         .release =      lpfc_debugfs_release,
3590 };
3591
3592 #undef lpfc_debugfs_op_dumpData
3593 static const struct file_operations lpfc_debugfs_op_dumpData = {
3594         .owner =        THIS_MODULE,
3595         .open =         lpfc_debugfs_dumpData_open,
3596         .llseek =       lpfc_debugfs_lseek,
3597         .read =         lpfc_debugfs_read,
3598         .write =        lpfc_debugfs_dumpDataDif_write,
3599         .release =      lpfc_debugfs_dumpDataDif_release,
3600 };
3601
3602 #undef lpfc_debugfs_op_dumpDif
3603 static const struct file_operations lpfc_debugfs_op_dumpDif = {
3604         .owner =        THIS_MODULE,
3605         .open =         lpfc_debugfs_dumpDif_open,
3606         .llseek =       lpfc_debugfs_lseek,
3607         .read =         lpfc_debugfs_read,
3608         .write =        lpfc_debugfs_dumpDataDif_write,
3609         .release =      lpfc_debugfs_dumpDataDif_release,
3610 };
3611
3612 #undef lpfc_debugfs_op_dif_err
3613 static const struct file_operations lpfc_debugfs_op_dif_err = {
3614         .owner =        THIS_MODULE,
3615         .open =         simple_open,
3616         .llseek =       lpfc_debugfs_lseek,
3617         .read =         lpfc_debugfs_dif_err_read,
3618         .write =        lpfc_debugfs_dif_err_write,
3619         .release =      lpfc_debugfs_dif_err_release,
3620 };
3621
3622 #undef lpfc_debugfs_op_slow_ring_trc
3623 static const struct file_operations lpfc_debugfs_op_slow_ring_trc = {
3624         .owner =        THIS_MODULE,
3625         .open =         lpfc_debugfs_slow_ring_trc_open,
3626         .llseek =       lpfc_debugfs_lseek,
3627         .read =         lpfc_debugfs_read,
3628         .release =      lpfc_debugfs_release,
3629 };
3630
3631 static struct dentry *lpfc_debugfs_root = NULL;
3632 static atomic_t lpfc_debugfs_hba_count;
3633
3634 /*
3635  * File operations for the iDiag debugfs
3636  */
3637 #undef lpfc_idiag_op_pciCfg
3638 static const struct file_operations lpfc_idiag_op_pciCfg = {
3639         .owner =        THIS_MODULE,
3640         .open =         lpfc_idiag_open,
3641         .llseek =       lpfc_debugfs_lseek,
3642         .read =         lpfc_idiag_pcicfg_read,
3643         .write =        lpfc_idiag_pcicfg_write,
3644         .release =      lpfc_idiag_cmd_release,
3645 };
3646
3647 #undef lpfc_idiag_op_barAcc
3648 static const struct file_operations lpfc_idiag_op_barAcc = {
3649         .owner =        THIS_MODULE,
3650         .open =         lpfc_idiag_open,
3651         .llseek =       lpfc_debugfs_lseek,
3652         .read =         lpfc_idiag_baracc_read,
3653         .write =        lpfc_idiag_baracc_write,
3654         .release =      lpfc_idiag_cmd_release,
3655 };
3656
3657 #undef lpfc_idiag_op_queInfo
3658 static const struct file_operations lpfc_idiag_op_queInfo = {
3659         .owner =        THIS_MODULE,
3660         .open =         lpfc_idiag_open,
3661         .read =         lpfc_idiag_queinfo_read,
3662         .release =      lpfc_idiag_release,
3663 };
3664
3665 #undef lpfc_idiag_op_queAcc
3666 static const struct file_operations lpfc_idiag_op_queAcc = {
3667         .owner =        THIS_MODULE,
3668         .open =         lpfc_idiag_open,
3669         .llseek =       lpfc_debugfs_lseek,
3670         .read =         lpfc_idiag_queacc_read,
3671         .write =        lpfc_idiag_queacc_write,
3672         .release =      lpfc_idiag_cmd_release,
3673 };
3674
3675 #undef lpfc_idiag_op_drbAcc
3676 static const struct file_operations lpfc_idiag_op_drbAcc = {
3677         .owner =        THIS_MODULE,
3678         .open =         lpfc_idiag_open,
3679         .llseek =       lpfc_debugfs_lseek,
3680         .read =         lpfc_idiag_drbacc_read,
3681         .write =        lpfc_idiag_drbacc_write,
3682         .release =      lpfc_idiag_cmd_release,
3683 };
3684
3685 #undef lpfc_idiag_op_ctlAcc
3686 static const struct file_operations lpfc_idiag_op_ctlAcc = {
3687         .owner =        THIS_MODULE,
3688         .open =         lpfc_idiag_open,
3689         .llseek =       lpfc_debugfs_lseek,
3690         .read =         lpfc_idiag_ctlacc_read,
3691         .write =        lpfc_idiag_ctlacc_write,
3692         .release =      lpfc_idiag_cmd_release,
3693 };
3694
3695 #undef lpfc_idiag_op_mbxAcc
3696 static const struct file_operations lpfc_idiag_op_mbxAcc = {
3697         .owner =        THIS_MODULE,
3698         .open =         lpfc_idiag_open,
3699         .llseek =       lpfc_debugfs_lseek,
3700         .read =         lpfc_idiag_mbxacc_read,
3701         .write =        lpfc_idiag_mbxacc_write,
3702         .release =      lpfc_idiag_cmd_release,
3703 };
3704
3705 #undef lpfc_idiag_op_extAcc
3706 static const struct file_operations lpfc_idiag_op_extAcc = {
3707         .owner =        THIS_MODULE,
3708         .open =         lpfc_idiag_open,
3709         .llseek =       lpfc_debugfs_lseek,
3710         .read =         lpfc_idiag_extacc_read,
3711         .write =        lpfc_idiag_extacc_write,
3712         .release =      lpfc_idiag_cmd_release,
3713 };
3714
3715 #endif
3716
3717 /* lpfc_idiag_mbxacc_dump_bsg_mbox - idiag debugfs dump bsg mailbox command
3718  * @phba: Pointer to HBA context object.
3719  * @dmabuf: Pointer to a DMA buffer descriptor.
3720  *
3721  * Description:
3722  * This routine dump a bsg pass-through non-embedded mailbox command with
3723  * external buffer.
3724  **/
3725 void
3726 lpfc_idiag_mbxacc_dump_bsg_mbox(struct lpfc_hba *phba, enum nemb_type nemb_tp,
3727                                 enum mbox_type mbox_tp, enum dma_type dma_tp,
3728                                 enum sta_type sta_tp,
3729                                 struct lpfc_dmabuf *dmabuf, uint32_t ext_buf)
3730 {
3731 #ifdef CONFIG_SCSI_LPFC_DEBUG_FS
3732         uint32_t *mbx_mbox_cmd, *mbx_dump_map, *mbx_dump_cnt, *mbx_word_cnt;
3733         char line_buf[LPFC_MBX_ACC_LBUF_SZ];
3734         int len = 0;
3735         uint32_t do_dump = 0;
3736         uint32_t *pword;
3737         uint32_t i;
3738
3739         if (idiag.cmd.opcode != LPFC_IDIAG_BSG_MBXACC_DP)
3740                 return;
3741
3742         mbx_mbox_cmd = &idiag.cmd.data[IDIAG_MBXACC_MBCMD_INDX];
3743         mbx_dump_map = &idiag.cmd.data[IDIAG_MBXACC_DPMAP_INDX];
3744         mbx_dump_cnt = &idiag.cmd.data[IDIAG_MBXACC_DPCNT_INDX];
3745         mbx_word_cnt = &idiag.cmd.data[IDIAG_MBXACC_WDCNT_INDX];
3746
3747         if (!(*mbx_dump_map & LPFC_MBX_DMP_ALL) ||
3748             (*mbx_dump_cnt == 0) ||
3749             (*mbx_word_cnt == 0))
3750                 return;
3751
3752         if (*mbx_mbox_cmd != 0x9B)
3753                 return;
3754
3755         if ((mbox_tp == mbox_rd) && (dma_tp == dma_mbox)) {
3756                 if (*mbx_dump_map & LPFC_BSG_DMP_MBX_RD_MBX) {
3757                         do_dump |= LPFC_BSG_DMP_MBX_RD_MBX;
3758                         printk(KERN_ERR "\nRead mbox command (x%x), "
3759                                "nemb:0x%x, extbuf_cnt:%d:\n",
3760                                sta_tp, nemb_tp, ext_buf);
3761                 }
3762         }
3763         if ((mbox_tp == mbox_rd) && (dma_tp == dma_ebuf)) {
3764                 if (*mbx_dump_map & LPFC_BSG_DMP_MBX_RD_BUF) {
3765                         do_dump |= LPFC_BSG_DMP_MBX_RD_BUF;
3766                         printk(KERN_ERR "\nRead mbox buffer (x%x), "
3767                                "nemb:0x%x, extbuf_seq:%d:\n",
3768                                sta_tp, nemb_tp, ext_buf);
3769                 }
3770         }
3771         if ((mbox_tp == mbox_wr) && (dma_tp == dma_mbox)) {
3772                 if (*mbx_dump_map & LPFC_BSG_DMP_MBX_WR_MBX) {
3773                         do_dump |= LPFC_BSG_DMP_MBX_WR_MBX;
3774                         printk(KERN_ERR "\nWrite mbox command (x%x), "
3775                                "nemb:0x%x, extbuf_cnt:%d:\n",
3776                                sta_tp, nemb_tp, ext_buf);
3777                 }
3778         }
3779         if ((mbox_tp == mbox_wr) && (dma_tp == dma_ebuf)) {
3780                 if (*mbx_dump_map & LPFC_BSG_DMP_MBX_WR_BUF) {
3781                         do_dump |= LPFC_BSG_DMP_MBX_WR_BUF;
3782                         printk(KERN_ERR "\nWrite mbox buffer (x%x), "
3783                                "nemb:0x%x, extbuf_seq:%d:\n",
3784                                sta_tp, nemb_tp, ext_buf);
3785                 }
3786         }
3787
3788         /* dump buffer content */
3789         if (do_dump) {
3790                 pword = (uint32_t *)dmabuf->virt;
3791                 for (i = 0; i < *mbx_word_cnt; i++) {
3792                         if (!(i % 8)) {
3793                                 if (i != 0)
3794                                         printk(KERN_ERR "%s\n", line_buf);
3795                                 len = 0;
3796                                 len += snprintf(line_buf+len,
3797                                                 LPFC_MBX_ACC_LBUF_SZ-len,
3798                                                 "%03d: ", i);
3799                         }
3800                         len += snprintf(line_buf+len, LPFC_MBX_ACC_LBUF_SZ-len,
3801                                         "%08x ", (uint32_t)*pword);
3802                         pword++;
3803                 }
3804                 if ((i - 1) % 8)
3805                         printk(KERN_ERR "%s\n", line_buf);
3806                 (*mbx_dump_cnt)--;
3807         }
3808
3809         /* Clean out command structure on reaching dump count */
3810         if (*mbx_dump_cnt == 0)
3811                 memset(&idiag, 0, sizeof(idiag));
3812         return;
3813 #endif
3814 }
3815
3816 /* lpfc_idiag_mbxacc_dump_issue_mbox - idiag debugfs dump issue mailbox command
3817  * @phba: Pointer to HBA context object.
3818  * @dmabuf: Pointer to a DMA buffer descriptor.
3819  *
3820  * Description:
3821  * This routine dump a pass-through non-embedded mailbox command from issue
3822  * mailbox command.
3823  **/
3824 void
3825 lpfc_idiag_mbxacc_dump_issue_mbox(struct lpfc_hba *phba, MAILBOX_t *pmbox)
3826 {
3827 #ifdef CONFIG_SCSI_LPFC_DEBUG_FS
3828         uint32_t *mbx_dump_map, *mbx_dump_cnt, *mbx_word_cnt, *mbx_mbox_cmd;
3829         char line_buf[LPFC_MBX_ACC_LBUF_SZ];
3830         int len = 0;
3831         uint32_t *pword;
3832         uint8_t *pbyte;
3833         uint32_t i, j;
3834
3835         if (idiag.cmd.opcode != LPFC_IDIAG_CMD_MBXACC_DP)
3836                 return;
3837
3838         mbx_mbox_cmd = &idiag.cmd.data[IDIAG_MBXACC_MBCMD_INDX];
3839         mbx_dump_map = &idiag.cmd.data[IDIAG_MBXACC_DPMAP_INDX];
3840         mbx_dump_cnt = &idiag.cmd.data[IDIAG_MBXACC_DPCNT_INDX];
3841         mbx_word_cnt = &idiag.cmd.data[IDIAG_MBXACC_WDCNT_INDX];
3842
3843         if (!(*mbx_dump_map & LPFC_MBX_DMP_MBX_ALL) ||
3844             (*mbx_dump_cnt == 0) ||
3845             (*mbx_word_cnt == 0))
3846                 return;
3847
3848         if ((*mbx_mbox_cmd != LPFC_MBX_ALL_CMD) &&
3849             (*mbx_mbox_cmd != pmbox->mbxCommand))
3850                 return;
3851
3852         /* dump buffer content */
3853         if (*mbx_dump_map & LPFC_MBX_DMP_MBX_WORD) {
3854                 printk(KERN_ERR "Mailbox command:0x%x dump by word:\n",
3855                        pmbox->mbxCommand);
3856                 pword = (uint32_t *)pmbox;
3857                 for (i = 0; i < *mbx_word_cnt; i++) {
3858                         if (!(i % 8)) {
3859                                 if (i != 0)
3860                                         printk(KERN_ERR "%s\n", line_buf);
3861                                 len = 0;
3862                                 memset(line_buf, 0, LPFC_MBX_ACC_LBUF_SZ);
3863                                 len += snprintf(line_buf+len,
3864                                                 LPFC_MBX_ACC_LBUF_SZ-len,
3865                                                 "%03d: ", i);
3866                         }
3867                         len += snprintf(line_buf+len, LPFC_MBX_ACC_LBUF_SZ-len,
3868                                         "%08x ",
3869                                         ((uint32_t)*pword) & 0xffffffff);
3870                         pword++;
3871                 }
3872                 if ((i - 1) % 8)
3873                         printk(KERN_ERR "%s\n", line_buf);
3874                 printk(KERN_ERR "\n");
3875         }
3876         if (*mbx_dump_map & LPFC_MBX_DMP_MBX_BYTE) {
3877                 printk(KERN_ERR "Mailbox command:0x%x dump by byte:\n",
3878                        pmbox->mbxCommand);
3879                 pbyte = (uint8_t *)pmbox;
3880                 for (i = 0; i < *mbx_word_cnt; i++) {
3881                         if (!(i % 8)) {
3882                                 if (i != 0)
3883                                         printk(KERN_ERR "%s\n", line_buf);
3884                                 len = 0;
3885                                 memset(line_buf, 0, LPFC_MBX_ACC_LBUF_SZ);
3886                                 len += snprintf(line_buf+len,
3887                                                 LPFC_MBX_ACC_LBUF_SZ-len,
3888                                                 "%03d: ", i);
3889                         }
3890                         for (j = 0; j < 4; j++) {
3891                                 len += snprintf(line_buf+len,
3892                                                 LPFC_MBX_ACC_LBUF_SZ-len,
3893                                                 "%02x",
3894                                                 ((uint8_t)*pbyte) & 0xff);
3895                                 pbyte++;
3896                         }
3897                         len += snprintf(line_buf+len,
3898                                         LPFC_MBX_ACC_LBUF_SZ-len, " ");
3899                 }
3900                 if ((i - 1) % 8)
3901                         printk(KERN_ERR "%s\n", line_buf);
3902                 printk(KERN_ERR "\n");
3903         }
3904         (*mbx_dump_cnt)--;
3905
3906         /* Clean out command structure on reaching dump count */
3907         if (*mbx_dump_cnt == 0)
3908                 memset(&idiag, 0, sizeof(idiag));
3909         return;
3910 #endif
3911 }
3912
3913 /**
3914  * lpfc_debugfs_initialize - Initialize debugfs for a vport
3915  * @vport: The vport pointer to initialize.
3916  *
3917  * Description:
3918  * When Debugfs is configured this routine sets up the lpfc debugfs file system.
3919  * If not already created, this routine will create the lpfc directory, and
3920  * lpfcX directory (for this HBA), and vportX directory for this vport. It will
3921  * also create each file used to access lpfc specific debugfs information.
3922  **/
3923 inline void
3924 lpfc_debugfs_initialize(struct lpfc_vport *vport)
3925 {
3926 #ifdef CONFIG_SCSI_LPFC_DEBUG_FS
3927         struct lpfc_hba   *phba = vport->phba;
3928         char name[64];
3929         uint32_t num, i;
3930
3931         if (!lpfc_debugfs_enable)
3932                 return;
3933
3934         /* Setup lpfc root directory */
3935         if (!lpfc_debugfs_root) {
3936                 lpfc_debugfs_root = debugfs_create_dir("lpfc", NULL);
3937                 atomic_set(&lpfc_debugfs_hba_count, 0);
3938                 if (!lpfc_debugfs_root) {
3939                         lpfc_printf_vlog(vport, KERN_ERR, LOG_INIT,
3940                                          "0408 Cannot create debugfs root\n");
3941                         goto debug_failed;
3942                 }
3943         }
3944         if (!lpfc_debugfs_start_time)
3945                 lpfc_debugfs_start_time = jiffies;
3946
3947         /* Setup funcX directory for specific HBA PCI function */
3948         snprintf(name, sizeof(name), "fn%d", phba->brd_no);
3949         if (!phba->hba_debugfs_root) {
3950                 phba->hba_debugfs_root =
3951                         debugfs_create_dir(name, lpfc_debugfs_root);
3952                 if (!phba->hba_debugfs_root) {
3953                         lpfc_printf_vlog(vport, KERN_ERR, LOG_INIT,
3954                                          "0412 Cannot create debugfs hba\n");
3955                         goto debug_failed;
3956                 }
3957                 atomic_inc(&lpfc_debugfs_hba_count);
3958                 atomic_set(&phba->debugfs_vport_count, 0);
3959
3960                 /* Setup hbqinfo */
3961                 snprintf(name, sizeof(name), "hbqinfo");
3962                 phba->debug_hbqinfo =
3963                         debugfs_create_file(name, S_IFREG|S_IRUGO|S_IWUSR,
3964                                  phba->hba_debugfs_root,
3965                                  phba, &lpfc_debugfs_op_hbqinfo);
3966                 if (!phba->debug_hbqinfo) {
3967                         lpfc_printf_vlog(vport, KERN_ERR, LOG_INIT,
3968                                 "0411 Cannot create debugfs hbqinfo\n");
3969                         goto debug_failed;
3970                 }
3971
3972                 /* Setup dumpHBASlim */
3973                 if (phba->sli_rev < LPFC_SLI_REV4) {
3974                         snprintf(name, sizeof(name), "dumpHBASlim");
3975                         phba->debug_dumpHBASlim =
3976                                 debugfs_create_file(name,
3977                                         S_IFREG|S_IRUGO|S_IWUSR,
3978                                         phba->hba_debugfs_root,
3979                                         phba, &lpfc_debugfs_op_dumpHBASlim);
3980                         if (!phba->debug_dumpHBASlim) {
3981                                 lpfc_printf_vlog(vport, KERN_ERR, LOG_INIT,
3982                                                  "0413 Cannot create debugfs "
3983                                                 "dumpHBASlim\n");
3984                                 goto debug_failed;
3985                         }
3986                 } else
3987                         phba->debug_dumpHBASlim = NULL;
3988
3989                 /* Setup dumpHostSlim */
3990                 if (phba->sli_rev < LPFC_SLI_REV4) {
3991                         snprintf(name, sizeof(name), "dumpHostSlim");
3992                         phba->debug_dumpHostSlim =
3993                                 debugfs_create_file(name,
3994                                         S_IFREG|S_IRUGO|S_IWUSR,
3995                                         phba->hba_debugfs_root,
3996                                         phba, &lpfc_debugfs_op_dumpHostSlim);
3997                         if (!phba->debug_dumpHostSlim) {
3998                                 lpfc_printf_vlog(vport, KERN_ERR, LOG_INIT,
3999                                                  "0414 Cannot create debugfs "
4000                                                  "dumpHostSlim\n");
4001                                 goto debug_failed;
4002                         }
4003                 } else
4004                         phba->debug_dumpHBASlim = NULL;
4005
4006                 /* Setup dumpData */
4007                 snprintf(name, sizeof(name), "dumpData");
4008                 phba->debug_dumpData =
4009                         debugfs_create_file(name, S_IFREG|S_IRUGO|S_IWUSR,
4010                                  phba->hba_debugfs_root,
4011                                  phba, &lpfc_debugfs_op_dumpData);
4012                 if (!phba->debug_dumpData) {
4013                         lpfc_printf_vlog(vport, KERN_ERR, LOG_INIT,
4014                                 "0800 Cannot create debugfs dumpData\n");
4015                         goto debug_failed;
4016                 }
4017
4018                 /* Setup dumpDif */
4019                 snprintf(name, sizeof(name), "dumpDif");
4020                 phba->debug_dumpDif =
4021                         debugfs_create_file(name, S_IFREG|S_IRUGO|S_IWUSR,
4022                                  phba->hba_debugfs_root,
4023                                  phba, &lpfc_debugfs_op_dumpDif);
4024                 if (!phba->debug_dumpDif) {
4025                         lpfc_printf_vlog(vport, KERN_ERR, LOG_INIT,
4026                                 "0801 Cannot create debugfs dumpDif\n");
4027                         goto debug_failed;
4028                 }
4029
4030                 /* Setup DIF Error Injections */
4031                 snprintf(name, sizeof(name), "InjErrLBA");
4032                 phba->debug_InjErrLBA =
4033                         debugfs_create_file(name, S_IFREG|S_IRUGO|S_IWUSR,
4034                         phba->hba_debugfs_root,
4035                         phba, &lpfc_debugfs_op_dif_err);
4036                 if (!phba->debug_InjErrLBA) {
4037                         lpfc_printf_vlog(vport, KERN_ERR, LOG_INIT,
4038                                 "0807 Cannot create debugfs InjErrLBA\n");
4039                         goto debug_failed;
4040                 }
4041                 phba->lpfc_injerr_lba = LPFC_INJERR_LBA_OFF;
4042
4043                 snprintf(name, sizeof(name), "InjErrNPortID");
4044                 phba->debug_InjErrNPortID =
4045                         debugfs_create_file(name, S_IFREG|S_IRUGO|S_IWUSR,
4046                         phba->hba_debugfs_root,
4047                         phba, &lpfc_debugfs_op_dif_err);
4048                 if (!phba->debug_InjErrNPortID) {
4049                         lpfc_printf_vlog(vport, KERN_ERR, LOG_INIT,
4050                                 "0809 Cannot create debugfs InjErrNPortID\n");
4051                         goto debug_failed;
4052                 }
4053
4054                 snprintf(name, sizeof(name), "InjErrWWPN");
4055                 phba->debug_InjErrWWPN =
4056                         debugfs_create_file(name, S_IFREG|S_IRUGO|S_IWUSR,
4057                         phba->hba_debugfs_root,
4058                         phba, &lpfc_debugfs_op_dif_err);
4059                 if (!phba->debug_InjErrWWPN) {
4060                         lpfc_printf_vlog(vport, KERN_ERR, LOG_INIT,
4061                                 "0810 Cannot create debugfs InjErrWWPN\n");
4062                         goto debug_failed;
4063                 }
4064
4065                 snprintf(name, sizeof(name), "writeGuardInjErr");
4066                 phba->debug_writeGuard =
4067                         debugfs_create_file(name, S_IFREG|S_IRUGO|S_IWUSR,
4068                         phba->hba_debugfs_root,
4069                         phba, &lpfc_debugfs_op_dif_err);
4070                 if (!phba->debug_writeGuard) {
4071                         lpfc_printf_vlog(vport, KERN_ERR, LOG_INIT,
4072                                 "0802 Cannot create debugfs writeGuard\n");
4073                         goto debug_failed;
4074                 }
4075
4076                 snprintf(name, sizeof(name), "writeAppInjErr");
4077                 phba->debug_writeApp =
4078                         debugfs_create_file(name, S_IFREG|S_IRUGO|S_IWUSR,
4079                         phba->hba_debugfs_root,
4080                         phba, &lpfc_debugfs_op_dif_err);
4081                 if (!phba->debug_writeApp) {
4082                         lpfc_printf_vlog(vport, KERN_ERR, LOG_INIT,
4083                                 "0803 Cannot create debugfs writeApp\n");
4084                         goto debug_failed;
4085                 }
4086
4087                 snprintf(name, sizeof(name), "writeRefInjErr");
4088                 phba->debug_writeRef =
4089                         debugfs_create_file(name, S_IFREG|S_IRUGO|S_IWUSR,
4090                         phba->hba_debugfs_root,
4091                         phba, &lpfc_debugfs_op_dif_err);
4092                 if (!phba->debug_writeRef) {
4093                         lpfc_printf_vlog(vport, KERN_ERR, LOG_INIT,
4094                                 "0804 Cannot create debugfs writeRef\n");
4095                         goto debug_failed;
4096                 }
4097
4098                 snprintf(name, sizeof(name), "readGuardInjErr");
4099                 phba->debug_readGuard =
4100                         debugfs_create_file(name, S_IFREG|S_IRUGO|S_IWUSR,
4101                         phba->hba_debugfs_root,
4102                         phba, &lpfc_debugfs_op_dif_err);
4103                 if (!phba->debug_readGuard) {
4104                         lpfc_printf_vlog(vport, KERN_ERR, LOG_INIT,
4105                                 "0808 Cannot create debugfs readGuard\n");
4106                         goto debug_failed;
4107                 }
4108
4109                 snprintf(name, sizeof(name), "readAppInjErr");
4110                 phba->debug_readApp =
4111                         debugfs_create_file(name, S_IFREG|S_IRUGO|S_IWUSR,
4112                         phba->hba_debugfs_root,
4113                         phba, &lpfc_debugfs_op_dif_err);
4114                 if (!phba->debug_readApp) {
4115                         lpfc_printf_vlog(vport, KERN_ERR, LOG_INIT,
4116                                 "0805 Cannot create debugfs readApp\n");
4117                         goto debug_failed;
4118                 }
4119
4120                 snprintf(name, sizeof(name), "readRefInjErr");
4121                 phba->debug_readRef =
4122                         debugfs_create_file(name, S_IFREG|S_IRUGO|S_IWUSR,
4123                         phba->hba_debugfs_root,
4124                         phba, &lpfc_debugfs_op_dif_err);
4125                 if (!phba->debug_readRef) {
4126                         lpfc_printf_vlog(vport, KERN_ERR, LOG_INIT,
4127                                 "0806 Cannot create debugfs readApp\n");
4128                         goto debug_failed;
4129                 }
4130
4131                 /* Setup slow ring trace */
4132                 if (lpfc_debugfs_max_slow_ring_trc) {
4133                         num = lpfc_debugfs_max_slow_ring_trc - 1;
4134                         if (num & lpfc_debugfs_max_slow_ring_trc) {
4135                                 /* Change to be a power of 2 */
4136                                 num = lpfc_debugfs_max_slow_ring_trc;
4137                                 i = 0;
4138                                 while (num > 1) {
4139                                         num = num >> 1;
4140                                         i++;
4141                                 }
4142                                 lpfc_debugfs_max_slow_ring_trc = (1 << i);
4143                                 printk(KERN_ERR
4144                                        "lpfc_debugfs_max_disc_trc changed to "
4145                                        "%d\n", lpfc_debugfs_max_disc_trc);
4146                         }
4147                 }
4148
4149                 snprintf(name, sizeof(name), "slow_ring_trace");
4150                 phba->debug_slow_ring_trc =
4151                         debugfs_create_file(name, S_IFREG|S_IRUGO|S_IWUSR,
4152                                  phba->hba_debugfs_root,
4153                                  phba, &lpfc_debugfs_op_slow_ring_trc);
4154                 if (!phba->debug_slow_ring_trc) {
4155                         lpfc_printf_vlog(vport, KERN_ERR, LOG_INIT,
4156                                          "0415 Cannot create debugfs "
4157                                          "slow_ring_trace\n");
4158                         goto debug_failed;
4159                 }
4160                 if (!phba->slow_ring_trc) {
4161                         phba->slow_ring_trc = kmalloc(
4162                                 (sizeof(struct lpfc_debugfs_trc) *
4163                                 lpfc_debugfs_max_slow_ring_trc),
4164                                 GFP_KERNEL);
4165                         if (!phba->slow_ring_trc) {
4166                                 lpfc_printf_vlog(vport, KERN_ERR, LOG_INIT,
4167                                                  "0416 Cannot create debugfs "
4168                                                  "slow_ring buffer\n");
4169                                 goto debug_failed;
4170                         }
4171                         atomic_set(&phba->slow_ring_trc_cnt, 0);
4172                         memset(phba->slow_ring_trc, 0,
4173                                 (sizeof(struct lpfc_debugfs_trc) *
4174                                 lpfc_debugfs_max_slow_ring_trc));
4175                 }
4176         }
4177
4178         snprintf(name, sizeof(name), "vport%d", vport->vpi);
4179         if (!vport->vport_debugfs_root) {
4180                 vport->vport_debugfs_root =
4181                         debugfs_create_dir(name, phba->hba_debugfs_root);
4182                 if (!vport->vport_debugfs_root) {
4183                         lpfc_printf_vlog(vport, KERN_ERR, LOG_INIT,
4184                                          "0417 Can't create debugfs\n");
4185                         goto debug_failed;
4186                 }
4187                 atomic_inc(&phba->debugfs_vport_count);
4188         }
4189
4190         if (lpfc_debugfs_max_disc_trc) {
4191                 num = lpfc_debugfs_max_disc_trc - 1;
4192                 if (num & lpfc_debugfs_max_disc_trc) {
4193                         /* Change to be a power of 2 */
4194                         num = lpfc_debugfs_max_disc_trc;
4195                         i = 0;
4196                         while (num > 1) {
4197                                 num = num >> 1;
4198                                 i++;
4199                         }
4200                         lpfc_debugfs_max_disc_trc = (1 << i);
4201                         printk(KERN_ERR
4202                                "lpfc_debugfs_max_disc_trc changed to %d\n",
4203                                lpfc_debugfs_max_disc_trc);
4204                 }
4205         }
4206
4207         vport->disc_trc = kzalloc(
4208                 (sizeof(struct lpfc_debugfs_trc) * lpfc_debugfs_max_disc_trc),
4209                 GFP_KERNEL);
4210
4211         if (!vport->disc_trc) {
4212                 lpfc_printf_vlog(vport, KERN_ERR, LOG_INIT,
4213                                  "0418 Cannot create debugfs disc trace "
4214                                  "buffer\n");
4215                 goto debug_failed;
4216         }
4217         atomic_set(&vport->disc_trc_cnt, 0);
4218
4219         snprintf(name, sizeof(name), "discovery_trace");
4220         vport->debug_disc_trc =
4221                 debugfs_create_file(name, S_IFREG|S_IRUGO|S_IWUSR,
4222                                  vport->vport_debugfs_root,
4223                                  vport, &lpfc_debugfs_op_disc_trc);
4224         if (!vport->debug_disc_trc) {
4225                 lpfc_printf_vlog(vport, KERN_ERR, LOG_INIT,
4226                                  "0419 Cannot create debugfs "
4227                                  "discovery_trace\n");
4228                 goto debug_failed;
4229         }
4230         snprintf(name, sizeof(name), "nodelist");
4231         vport->debug_nodelist =
4232                 debugfs_create_file(name, S_IFREG|S_IRUGO|S_IWUSR,
4233                                  vport->vport_debugfs_root,
4234                                  vport, &lpfc_debugfs_op_nodelist);
4235         if (!vport->debug_nodelist) {
4236                 lpfc_printf_vlog(vport, KERN_ERR, LOG_INIT,
4237                                  "2985 Can't create debugfs nodelist\n");
4238                 goto debug_failed;
4239         }
4240
4241         /*
4242          * iDiag debugfs root entry points for SLI4 device only
4243          */
4244         if (phba->sli_rev < LPFC_SLI_REV4)
4245                 goto debug_failed;
4246
4247         snprintf(name, sizeof(name), "iDiag");
4248         if (!phba->idiag_root) {
4249                 phba->idiag_root =
4250                         debugfs_create_dir(name, phba->hba_debugfs_root);
4251                 if (!phba->idiag_root) {
4252                         lpfc_printf_vlog(vport, KERN_ERR, LOG_INIT,
4253                                          "2922 Can't create idiag debugfs\n");
4254                         goto debug_failed;
4255                 }
4256                 /* Initialize iDiag data structure */
4257                 memset(&idiag, 0, sizeof(idiag));
4258         }
4259
4260         /* iDiag read PCI config space */
4261         snprintf(name, sizeof(name), "pciCfg");
4262         if (!phba->idiag_pci_cfg) {
4263                 phba->idiag_pci_cfg =
4264                         debugfs_create_file(name, S_IFREG|S_IRUGO|S_IWUSR,
4265                                 phba->idiag_root, phba, &lpfc_idiag_op_pciCfg);
4266                 if (!phba->idiag_pci_cfg) {
4267                         lpfc_printf_vlog(vport, KERN_ERR, LOG_INIT,
4268                                          "2923 Can't create idiag debugfs\n");
4269                         goto debug_failed;
4270                 }
4271                 idiag.offset.last_rd = 0;
4272         }
4273
4274         /* iDiag PCI BAR access */
4275         snprintf(name, sizeof(name), "barAcc");
4276         if (!phba->idiag_bar_acc) {
4277                 phba->idiag_bar_acc =
4278                         debugfs_create_file(name, S_IFREG|S_IRUGO|S_IWUSR,
4279                                 phba->idiag_root, phba, &lpfc_idiag_op_barAcc);
4280                 if (!phba->idiag_bar_acc) {
4281                         lpfc_printf_vlog(vport, KERN_ERR, LOG_INIT,
4282                                         "3056 Can't create idiag debugfs\n");
4283                         goto debug_failed;
4284                 }
4285                 idiag.offset.last_rd = 0;
4286         }
4287
4288         /* iDiag get PCI function queue information */
4289         snprintf(name, sizeof(name), "queInfo");
4290         if (!phba->idiag_que_info) {
4291                 phba->idiag_que_info =
4292                         debugfs_create_file(name, S_IFREG|S_IRUGO,
4293                         phba->idiag_root, phba, &lpfc_idiag_op_queInfo);
4294                 if (!phba->idiag_que_info) {
4295                         lpfc_printf_vlog(vport, KERN_ERR, LOG_INIT,
4296                                          "2924 Can't create idiag debugfs\n");
4297                         goto debug_failed;
4298                 }
4299         }
4300
4301         /* iDiag access PCI function queue */
4302         snprintf(name, sizeof(name), "queAcc");
4303         if (!phba->idiag_que_acc) {
4304                 phba->idiag_que_acc =
4305                         debugfs_create_file(name, S_IFREG|S_IRUGO|S_IWUSR,
4306                                 phba->idiag_root, phba, &lpfc_idiag_op_queAcc);
4307                 if (!phba->idiag_que_acc) {
4308                         lpfc_printf_vlog(vport, KERN_ERR, LOG_INIT,
4309                                          "2926 Can't create idiag debugfs\n");
4310                         goto debug_failed;
4311                 }
4312         }
4313
4314         /* iDiag access PCI function doorbell registers */
4315         snprintf(name, sizeof(name), "drbAcc");
4316         if (!phba->idiag_drb_acc) {
4317                 phba->idiag_drb_acc =
4318                         debugfs_create_file(name, S_IFREG|S_IRUGO|S_IWUSR,
4319                                 phba->idiag_root, phba, &lpfc_idiag_op_drbAcc);
4320                 if (!phba->idiag_drb_acc) {
4321                         lpfc_printf_vlog(vport, KERN_ERR, LOG_INIT,
4322                                          "2927 Can't create idiag debugfs\n");
4323                         goto debug_failed;
4324                 }
4325         }
4326
4327         /* iDiag access PCI function control registers */
4328         snprintf(name, sizeof(name), "ctlAcc");
4329         if (!phba->idiag_ctl_acc) {
4330                 phba->idiag_ctl_acc =
4331                         debugfs_create_file(name, S_IFREG|S_IRUGO|S_IWUSR,
4332                                 phba->idiag_root, phba, &lpfc_idiag_op_ctlAcc);
4333                 if (!phba->idiag_ctl_acc) {
4334                         lpfc_printf_vlog(vport, KERN_ERR, LOG_INIT,
4335                                          "2981 Can't create idiag debugfs\n");
4336                         goto debug_failed;
4337                 }
4338         }
4339
4340         /* iDiag access mbox commands */
4341         snprintf(name, sizeof(name), "mbxAcc");
4342         if (!phba->idiag_mbx_acc) {
4343                 phba->idiag_mbx_acc =
4344                         debugfs_create_file(name, S_IFREG|S_IRUGO|S_IWUSR,
4345                                 phba->idiag_root, phba, &lpfc_idiag_op_mbxAcc);
4346                 if (!phba->idiag_mbx_acc) {
4347                         lpfc_printf_vlog(vport, KERN_ERR, LOG_INIT,
4348                                         "2980 Can't create idiag debugfs\n");
4349                         goto debug_failed;
4350                 }
4351         }
4352
4353         /* iDiag extents access commands */
4354         if (phba->sli4_hba.extents_in_use) {
4355                 snprintf(name, sizeof(name), "extAcc");
4356                 if (!phba->idiag_ext_acc) {
4357                         phba->idiag_ext_acc =
4358                                 debugfs_create_file(name,
4359                                                     S_IFREG|S_IRUGO|S_IWUSR,
4360                                                     phba->idiag_root, phba,
4361                                                     &lpfc_idiag_op_extAcc);
4362                         if (!phba->idiag_ext_acc) {
4363                                 lpfc_printf_vlog(vport, KERN_ERR, LOG_INIT,
4364                                                 "2986 Cant create "
4365                                                 "idiag debugfs\n");
4366                                 goto debug_failed;
4367                         }
4368                 }
4369         }
4370
4371 debug_failed:
4372         return;
4373 #endif
4374 }
4375
4376 /**
4377  * lpfc_debugfs_terminate -  Tear down debugfs infrastructure for this vport
4378  * @vport: The vport pointer to remove from debugfs.
4379  *
4380  * Description:
4381  * When Debugfs is configured this routine removes debugfs file system elements
4382  * that are specific to this vport. It also checks to see if there are any
4383  * users left for the debugfs directories associated with the HBA and driver. If
4384  * this is the last user of the HBA directory or driver directory then it will
4385  * remove those from the debugfs infrastructure as well.
4386  **/
4387 inline void
4388 lpfc_debugfs_terminate(struct lpfc_vport *vport)
4389 {
4390 #ifdef CONFIG_SCSI_LPFC_DEBUG_FS
4391         struct lpfc_hba   *phba = vport->phba;
4392
4393         if (vport->disc_trc) {
4394                 kfree(vport->disc_trc);
4395                 vport->disc_trc = NULL;
4396         }
4397         if (vport->debug_disc_trc) {
4398                 debugfs_remove(vport->debug_disc_trc); /* discovery_trace */
4399                 vport->debug_disc_trc = NULL;
4400         }
4401         if (vport->debug_nodelist) {
4402                 debugfs_remove(vport->debug_nodelist); /* nodelist */
4403                 vport->debug_nodelist = NULL;
4404         }
4405         if (vport->vport_debugfs_root) {
4406                 debugfs_remove(vport->vport_debugfs_root); /* vportX */
4407                 vport->vport_debugfs_root = NULL;
4408                 atomic_dec(&phba->debugfs_vport_count);
4409         }
4410         if (atomic_read(&phba->debugfs_vport_count) == 0) {
4411
4412                 if (phba->debug_hbqinfo) {
4413                         debugfs_remove(phba->debug_hbqinfo); /* hbqinfo */
4414                         phba->debug_hbqinfo = NULL;
4415                 }
4416                 if (phba->debug_dumpHBASlim) {
4417                         debugfs_remove(phba->debug_dumpHBASlim); /* HBASlim */
4418                         phba->debug_dumpHBASlim = NULL;
4419                 }
4420                 if (phba->debug_dumpHostSlim) {
4421                         debugfs_remove(phba->debug_dumpHostSlim); /* HostSlim */
4422                         phba->debug_dumpHostSlim = NULL;
4423                 }
4424                 if (phba->debug_dumpData) {
4425                         debugfs_remove(phba->debug_dumpData); /* dumpData */
4426                         phba->debug_dumpData = NULL;
4427                 }
4428
4429                 if (phba->debug_dumpDif) {
4430                         debugfs_remove(phba->debug_dumpDif); /* dumpDif */
4431                         phba->debug_dumpDif = NULL;
4432                 }
4433                 if (phba->debug_InjErrLBA) {
4434                         debugfs_remove(phba->debug_InjErrLBA); /* InjErrLBA */
4435                         phba->debug_InjErrLBA = NULL;
4436                 }
4437                 if (phba->debug_InjErrNPortID) {         /* InjErrNPortID */
4438                         debugfs_remove(phba->debug_InjErrNPortID);
4439                         phba->debug_InjErrNPortID = NULL;
4440                 }
4441                 if (phba->debug_InjErrWWPN) {
4442                         debugfs_remove(phba->debug_InjErrWWPN); /* InjErrWWPN */
4443                         phba->debug_InjErrWWPN = NULL;
4444                 }
4445                 if (phba->debug_writeGuard) {
4446                         debugfs_remove(phba->debug_writeGuard); /* writeGuard */
4447                         phba->debug_writeGuard = NULL;
4448                 }
4449                 if (phba->debug_writeApp) {
4450                         debugfs_remove(phba->debug_writeApp); /* writeApp */
4451                         phba->debug_writeApp = NULL;
4452                 }
4453                 if (phba->debug_writeRef) {
4454                         debugfs_remove(phba->debug_writeRef); /* writeRef */
4455                         phba->debug_writeRef = NULL;
4456                 }
4457                 if (phba->debug_readGuard) {
4458                         debugfs_remove(phba->debug_readGuard); /* readGuard */
4459                         phba->debug_readGuard = NULL;
4460                 }
4461                 if (phba->debug_readApp) {
4462                         debugfs_remove(phba->debug_readApp); /* readApp */
4463                         phba->debug_readApp = NULL;
4464                 }
4465                 if (phba->debug_readRef) {
4466                         debugfs_remove(phba->debug_readRef); /* readRef */
4467                         phba->debug_readRef = NULL;
4468                 }
4469
4470                 if (phba->slow_ring_trc) {
4471                         kfree(phba->slow_ring_trc);
4472                         phba->slow_ring_trc = NULL;
4473                 }
4474                 if (phba->debug_slow_ring_trc) {
4475                         /* slow_ring_trace */
4476                         debugfs_remove(phba->debug_slow_ring_trc);
4477                         phba->debug_slow_ring_trc = NULL;
4478                 }
4479
4480                 /*
4481                  * iDiag release
4482                  */
4483                 if (phba->sli_rev == LPFC_SLI_REV4) {
4484                         if (phba->idiag_ext_acc) {
4485                                 /* iDiag extAcc */
4486                                 debugfs_remove(phba->idiag_ext_acc);
4487                                 phba->idiag_ext_acc = NULL;
4488                         }
4489                         if (phba->idiag_mbx_acc) {
4490                                 /* iDiag mbxAcc */
4491                                 debugfs_remove(phba->idiag_mbx_acc);
4492                                 phba->idiag_mbx_acc = NULL;
4493                         }
4494                         if (phba->idiag_ctl_acc) {
4495                                 /* iDiag ctlAcc */
4496                                 debugfs_remove(phba->idiag_ctl_acc);
4497                                 phba->idiag_ctl_acc = NULL;
4498                         }
4499                         if (phba->idiag_drb_acc) {
4500                                 /* iDiag drbAcc */
4501                                 debugfs_remove(phba->idiag_drb_acc);
4502                                 phba->idiag_drb_acc = NULL;
4503                         }
4504                         if (phba->idiag_que_acc) {
4505                                 /* iDiag queAcc */
4506                                 debugfs_remove(phba->idiag_que_acc);
4507                                 phba->idiag_que_acc = NULL;
4508                         }
4509                         if (phba->idiag_que_info) {
4510                                 /* iDiag queInfo */
4511                                 debugfs_remove(phba->idiag_que_info);
4512                                 phba->idiag_que_info = NULL;
4513                         }
4514                         if (phba->idiag_bar_acc) {
4515                                 /* iDiag barAcc */
4516                                 debugfs_remove(phba->idiag_bar_acc);
4517                                 phba->idiag_bar_acc = NULL;
4518                         }
4519                         if (phba->idiag_pci_cfg) {
4520                                 /* iDiag pciCfg */
4521                                 debugfs_remove(phba->idiag_pci_cfg);
4522                                 phba->idiag_pci_cfg = NULL;
4523                         }
4524
4525                         /* Finally remove the iDiag debugfs root */
4526                         if (phba->idiag_root) {
4527                                 /* iDiag root */
4528                                 debugfs_remove(phba->idiag_root);
4529                                 phba->idiag_root = NULL;
4530                         }
4531                 }
4532
4533                 if (phba->hba_debugfs_root) {
4534                         debugfs_remove(phba->hba_debugfs_root); /* fnX */
4535                         phba->hba_debugfs_root = NULL;
4536                         atomic_dec(&lpfc_debugfs_hba_count);
4537                 }
4538
4539                 if (atomic_read(&lpfc_debugfs_hba_count) == 0) {
4540                         debugfs_remove(lpfc_debugfs_root); /* lpfc */
4541                         lpfc_debugfs_root = NULL;
4542                 }
4543         }
4544 #endif
4545         return;
4546 }
4547
4548 /*
4549  * Driver debug utility routines outside of debugfs. The debug utility
4550  * routines implemented here is intended to be used in the instrumented
4551  * debug driver for debugging host or port issues.
4552  */
4553
4554 /**
4555  * lpfc_debug_dump_all_queues - dump all the queues with a hba
4556  * @phba: Pointer to HBA context object.
4557  *
4558  * This function dumps entries of all the queues asociated with the @phba.
4559  **/
4560 void
4561 lpfc_debug_dump_all_queues(struct lpfc_hba *phba)
4562 {
4563         int fcp_wqidx;
4564
4565         /*
4566          * Dump Work Queues (WQs)
4567          */
4568         lpfc_debug_dump_mbx_wq(phba);
4569         lpfc_debug_dump_els_wq(phba);
4570
4571         for (fcp_wqidx = 0; fcp_wqidx < phba->cfg_fcp_io_channel; fcp_wqidx++)
4572                 lpfc_debug_dump_fcp_wq(phba, fcp_wqidx);
4573
4574         lpfc_debug_dump_hdr_rq(phba);
4575         lpfc_debug_dump_dat_rq(phba);
4576         /*
4577          * Dump Complete Queues (CQs)
4578          */
4579         lpfc_debug_dump_mbx_cq(phba);
4580         lpfc_debug_dump_els_cq(phba);
4581
4582         for (fcp_wqidx = 0; fcp_wqidx < phba->cfg_fcp_io_channel; fcp_wqidx++)
4583                 lpfc_debug_dump_fcp_cq(phba, fcp_wqidx);
4584
4585         /*
4586          * Dump Event Queues (EQs)
4587          */
4588         for (fcp_wqidx = 0; fcp_wqidx < phba->cfg_fcp_io_channel; fcp_wqidx++)
4589                 lpfc_debug_dump_hba_eq(phba, fcp_wqidx);
4590 }