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 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/dma-mapping.h>
  24 #include <linux/idr.h>
  25 #include <linux/interrupt.h>
  26 #include <linux/kthread.h>
  27 #include <linux/pci.h>
  28 #include <linux/spinlock.h>
  29 #include <linux/ctype.h>
  30
  31 #include <scsi/scsi.h>
  32 #include <scsi/scsi_device.h>
  33 #include <scsi/scsi_host.h>
  34 #include <scsi/scsi_transport_fc.h>
  35
  36 #include "lpfc_hw.h"
  37 #include "lpfc_sli.h"
  38 #include "lpfc_disc.h"
  39 #include "lpfc_scsi.h"
  40 #include "lpfc.h"
  41 #include "lpfc_logmsg.h"
  42 #include "lpfc_crtn.h"
  43 #include "lpfc_vport.h"
  44 #include "lpfc_version.h"
  45 #include "lpfc_compat.h"
  46 #include "lpfc_debugfs.h"
  47
  48 #ifdef CONFIG_LPFC_DEBUG_FS
  49 /* debugfs interface
  50  *
  51  * To access this interface the user should:
  52  * # mkdir /debug
  53  * # mount -t debugfs none /debug
  54  *
  55  * The lpfc debugfs directory hierachy is:
  56  * lpfc/lpfcX/vportY
  57  * where X is the lpfc hba unique_id
  58  * where Y is the vport VPI on that hba
  59  *
  60  * Debugging services available per vport:
  61  * discovery_trace
  62  * This is an ACSII readable file that contains a trace of the last
  63  * lpfc_debugfs_max_disc_trc events that happened on a specific vport.
  64  * See lpfc_debugfs.h for different categories of
  65  * discovery events. To enable the discovery trace, the following
  66  * module parameters must be set:
  67  * lpfc_debugfs_enable=1         Turns on lpfc debugfs filesystem support
  68  * lpfc_debugfs_max_disc_trc=X   Where X is the event trace depth for
  69  *                               EACH vport. X MUST also be a power of 2.
  70  * lpfc_debugfs_mask_disc_trc=Y  Where Y is an event mask as defined in
  71  *                               lpfc_debugfs.h .
  72  */
  73 static int lpfc_debugfs_enable = 1;
  74 module_param(lpfc_debugfs_enable, int, 0);
  75 MODULE_PARM_DESC(lpfc_debugfs_enable, "Enable debugfs services");
  76
  77 /* This MUST be a power of 2 */
  78 static int lpfc_debugfs_max_disc_trc;
  79 module_param(lpfc_debugfs_max_disc_trc, int, 0);
  80 MODULE_PARM_DESC(lpfc_debugfs_max_disc_trc,
  81         "Set debugfs discovery trace depth");
  82
  83 /* This MUST be a power of 2 */
  84 static int lpfc_debugfs_max_slow_ring_trc;
  85 module_param(lpfc_debugfs_max_slow_ring_trc, int, 0);
  86 MODULE_PARM_DESC(lpfc_debugfs_max_slow_ring_trc,
  87         "Set debugfs slow ring trace depth");
  88
  89 int lpfc_debugfs_mask_disc_trc;
  90 module_param(lpfc_debugfs_mask_disc_trc, int, 0);
  91 MODULE_PARM_DESC(lpfc_debugfs_mask_disc_trc,
  92         "Set debugfs discovery trace mask");
  93
  94 #include <linux/debugfs.h>
  95
  96 /* size of output line, for discovery_trace and slow_ring_trace */
  97 #define LPFC_DEBUG_TRC_ENTRY_SIZE 100
  98
  99 /* nodelist output buffer size */
 100 #define LPFC_NODELIST_SIZE 8192
 101 #define LPFC_NODELIST_ENTRY_SIZE 120
 102
 103 /* dumpHBASlim output buffer size */
 104 #define LPFC_DUMPHBASLIM_SIZE 4096
 105
 106 /* dumpHostSlim output buffer size */
 107 #define LPFC_DUMPHOSTSLIM_SIZE 4096
 108
 109 /* hbqinfo output buffer size */
 110 #define LPFC_HBQINFO_SIZE 8192
 111
 112 struct lpfc_debug {
 113         char *buffer;
 114         int  len;
 115 };
 116
 117 static atomic_t lpfc_debugfs_seq_trc_cnt = ATOMIC_INIT(0);
 118 static unsigned long lpfc_debugfs_start_time = 0L;
 119
 120 static int
 121 lpfc_debugfs_disc_trc_data(struct lpfc_vport *vport, char *buf, int size)
 122 {
 123         int i, index, len, enable;
 124         uint32_t ms;
 125         struct lpfc_debugfs_trc *dtp;
 126         char buffer[LPFC_DEBUG_TRC_ENTRY_SIZE];
 127
 128
 129         enable = lpfc_debugfs_enable;
 130         lpfc_debugfs_enable = 0;
 131
 132         len = 0;
 133         index = (atomic_read(&vport->disc_trc_cnt) + 1) &
 134                 (lpfc_debugfs_max_disc_trc - 1);
 135         for (i = index; i < lpfc_debugfs_max_disc_trc; i++) {
 136                 dtp = vport->disc_trc + i;
 137                 if (!dtp->fmt)
 138                         continue;
 139                 ms = jiffies_to_msecs(dtp->jif - lpfc_debugfs_start_time);
 140                 snprintf(buffer,
 141                         LPFC_DEBUG_TRC_ENTRY_SIZE, "%010d:%010d ms:%s\n",
 142                         dtp->seq_cnt, ms, dtp->fmt);
 143                 len +=  snprintf(buf+len, size-len, buffer,
 144                         dtp->data1, dtp->data2, dtp->data3);
 145         }
 146         for (i = 0; i < index; i++) {
 147                 dtp = vport->disc_trc + i;
 148                 if (!dtp->fmt)
 149                         continue;
 150                 ms = jiffies_to_msecs(dtp->jif - lpfc_debugfs_start_time);
 151                 snprintf(buffer,
 152                         LPFC_DEBUG_TRC_ENTRY_SIZE, "%010d:%010d ms:%s\n",
 153                         dtp->seq_cnt, ms, dtp->fmt);
 154                 len +=  snprintf(buf+len, size-len, buffer,
 155                         dtp->data1, dtp->data2, dtp->data3);
 156         }
 157
 158         lpfc_debugfs_enable = enable;
 159         return len;
 160 }
 161
 162 static int
 163 lpfc_debugfs_slow_ring_trc_data(struct lpfc_hba *phba, char *buf, int size)
 164 {
 165         int i, index, len, enable;
 166         uint32_t ms;
 167         struct lpfc_debugfs_trc *dtp;
 168         char buffer[LPFC_DEBUG_TRC_ENTRY_SIZE];
 169
 170
 171         enable = lpfc_debugfs_enable;
 172         lpfc_debugfs_enable = 0;
 173
 174         len = 0;
 175         index = (atomic_read(&phba->slow_ring_trc_cnt) + 1) &
 176                 (lpfc_debugfs_max_slow_ring_trc - 1);
 177         for (i = index; i < lpfc_debugfs_max_slow_ring_trc; i++) {
 178                 dtp = phba->slow_ring_trc + i;
 179                 if (!dtp->fmt)
 180                         continue;
 181                 ms = jiffies_to_msecs(dtp->jif - lpfc_debugfs_start_time);
 182                 snprintf(buffer,
 183                         LPFC_DEBUG_TRC_ENTRY_SIZE, "%010d:%010d ms:%s\n",
 184                         dtp->seq_cnt, ms, dtp->fmt);
 185                 len +=  snprintf(buf+len, size-len, buffer,
 186                         dtp->data1, dtp->data2, dtp->data3);
 187         }
 188         for (i = 0; i < index; i++) {
 189                 dtp = phba->slow_ring_trc + i;
 190                 if (!dtp->fmt)
 191                         continue;
 192                 ms = jiffies_to_msecs(dtp->jif - lpfc_debugfs_start_time);
 193                 snprintf(buffer,
 194                         LPFC_DEBUG_TRC_ENTRY_SIZE, "%010d:%010d ms:%s\n",
 195                         dtp->seq_cnt, ms, dtp->fmt);
 196                 len +=  snprintf(buf+len, size-len, buffer,
 197                         dtp->data1, dtp->data2, dtp->data3);
 198         }
 199
 200         lpfc_debugfs_enable = enable;
 201         return len;
 202 }
 203
 204 static int lpfc_debugfs_last_hbq = -1;
 205
 206 static int
 207 lpfc_debugfs_hbqinfo_data(struct lpfc_hba *phba, char *buf, int size)
 208 {
 209         int len = 0;
 210         int cnt, i, j, found, posted, low;
 211         uint32_t phys, raw_index, getidx;
 212         struct lpfc_hbq_init *hip;
 213         struct hbq_s *hbqs;
 214         struct lpfc_hbq_entry *hbqe;
 215         struct lpfc_dmabuf *d_buf;
 216         struct hbq_dmabuf *hbq_buf;
 217
 218         cnt = LPFC_HBQINFO_SIZE;
 219         spin_lock_irq(&phba->hbalock);
 220
 221         /* toggle between multiple hbqs, if any */
 222         i = lpfc_sli_hbq_count();
 223         if (i > 1) {
 224                  lpfc_debugfs_last_hbq++;
 225                  if (lpfc_debugfs_last_hbq >= i)
 226                         lpfc_debugfs_last_hbq = 0;
 227         }
 228         else
 229                 lpfc_debugfs_last_hbq = 0;
 230
 231         i = lpfc_debugfs_last_hbq;
 232
 233         len +=  snprintf(buf+len, size-len, "HBQ %d Info\n", i);
 234
 235         hbqs =  &phba->hbqs[i];
 236         posted = 0;
 237         list_for_each_entry(d_buf, &hbqs->hbq_buffer_list, list)
 238                 posted++;
 239
 240         hip =  lpfc_hbq_defs[i];
 241         len +=  snprintf(buf+len, size-len,
 242                 "idx:%d prof:%d rn:%d bufcnt:%d icnt:%d acnt:%d posted %d\n",
 243                 hip->hbq_index, hip->profile, hip->rn,
 244                 hip->buffer_count, hip->init_count, hip->add_count, posted);
 245
 246         raw_index = phba->hbq_get[i];
 247         getidx = le32_to_cpu(raw_index);
 248         len +=  snprintf(buf+len, size-len,
 249                 "entrys:%d bufcnt:%d Put:%d nPut:%d localGet:%d hbaGet:%d\n",
 250                 hbqs->entry_count, hbqs->buffer_count, hbqs->hbqPutIdx,
 251                 hbqs->next_hbqPutIdx, hbqs->local_hbqGetIdx, getidx);
 252
 253         hbqe = (struct lpfc_hbq_entry *) phba->hbqs[i].hbq_virt;
 254         for (j=0; j<hbqs->entry_count; j++) {
 255                 len +=  snprintf(buf+len, size-len,
 256                         "%03d: %08x %04x %05x ", j,
 257                         le32_to_cpu(hbqe->bde.addrLow),
 258                         le32_to_cpu(hbqe->bde.tus.w),
 259                         le32_to_cpu(hbqe->buffer_tag));
 260                 i = 0;
 261                 found = 0;
 262
 263                 /* First calculate if slot has an associated posted buffer */
 264                 low = hbqs->hbqPutIdx - posted;
 265                 if (low >= 0) {
 266                         if ((j >= hbqs->hbqPutIdx) || (j < low)) {
 267                                 len +=  snprintf(buf+len, size-len, "Unused\n");
 268                                 goto skipit;
 269                         }
 270                 }
 271                 else {
 272                         if ((j >= hbqs->hbqPutIdx) &&
 273                                 (j < (hbqs->entry_count+low))) {
 274                                 len +=  snprintf(buf+len, size-len, "Unused\n");
 275                                 goto skipit;
 276                         }
 277                 }
 278
 279                 /* Get the Buffer info for the posted buffer */
 280                 list_for_each_entry(d_buf, &hbqs->hbq_buffer_list, list) {
 281                         hbq_buf = container_of(d_buf, struct hbq_dmabuf, dbuf);
 282                         phys = ((uint64_t)hbq_buf->dbuf.phys & 0xffffffff);
 283                         if (phys == le32_to_cpu(hbqe->bde.addrLow)) {
 284                                 len +=  snprintf(buf+len, size-len,
 285                                         "Buf%d: %p %06x\n", i,
 286                                         hbq_buf->dbuf.virt, hbq_buf->tag);
 287                                 found = 1;
 288                                 break;
 289                         }
 290                         i++;
 291                 }
 292                 if (!found) {
 293                         len +=  snprintf(buf+len, size-len, "No DMAinfo?\n");
 294                 }
 295 skipit:
 296                 hbqe++;
 297                 if (len > LPFC_HBQINFO_SIZE - 54)
 298                         break;
 299         }
 300         spin_unlock_irq(&phba->hbalock);
 301         return len;
 302 }
 303
 304 static int lpfc_debugfs_last_hba_slim_off;
 305
 306 static int
 307 lpfc_debugfs_dumpHBASlim_data(struct lpfc_hba *phba, char *buf, int size)
 308 {
 309         int len = 0;
 310         int i, off;
 311         uint32_t *ptr;
 312         char buffer[1024];
 313
 314         off = 0;
 315         spin_lock_irq(&phba->hbalock);
 316
 317         len +=  snprintf(buf+len, size-len, "HBA SLIM\n");
 318         lpfc_memcpy_from_slim(buffer,
 319                 ((uint8_t *)phba->MBslimaddr) + lpfc_debugfs_last_hba_slim_off,
 320                 1024);
 321
 322         ptr = (uint32_t *)&buffer[0];
 323         off = lpfc_debugfs_last_hba_slim_off;
 324
 325         /* Set it up for the next time */
 326         lpfc_debugfs_last_hba_slim_off += 1024;
 327         if (lpfc_debugfs_last_hba_slim_off >= 4096)
 328                 lpfc_debugfs_last_hba_slim_off = 0;
 329
 330         i = 1024;
 331         while (i > 0) {
 332                 len +=  snprintf(buf+len, size-len,
 333                 "%08x: %08x %08x %08x %08x %08x %08x %08x %08x\n",
 334                 off, *ptr, *(ptr+1), *(ptr+2), *(ptr+3), *(ptr+4),
 335                 *(ptr+5), *(ptr+6), *(ptr+7));
 336                 ptr += 8;
 337                 i -= (8 * sizeof(uint32_t));
 338                 off += (8 * sizeof(uint32_t));
 339         }
 340
 341         spin_unlock_irq(&phba->hbalock);
 342         return len;
 343 }
 344
 345 static int
 346 lpfc_debugfs_dumpHostSlim_data(struct lpfc_hba *phba, char *buf, int size)
 347 {
 348         int len = 0;
 349         int i, off;
 350         uint32_t word0, word1, word2, word3;
 351         uint32_t *ptr;
 352         struct lpfc_pgp *pgpp;
 353         struct lpfc_sli *psli = &phba->sli;
 354         struct lpfc_sli_ring *pring;
 355
 356         off = 0;
 357         spin_lock_irq(&phba->hbalock);
 358
 359         len +=  snprintf(buf+len, size-len, "SLIM Mailbox\n");
 360         ptr = (uint32_t *)phba->slim2p;
 361         i = sizeof(MAILBOX_t);
 362         while (i > 0) {
 363                 len +=  snprintf(buf+len, size-len,
 364                 "%08x: %08x %08x %08x %08x %08x %08x %08x %08x\n",
 365                 off, *ptr, *(ptr+1), *(ptr+2), *(ptr+3), *(ptr+4),
 366                 *(ptr+5), *(ptr+6), *(ptr+7));
 367                 ptr += 8;
 368                 i -= (8 * sizeof(uint32_t));
 369                 off += (8 * sizeof(uint32_t));
 370         }
 371
 372         len +=  snprintf(buf+len, size-len, "SLIM PCB\n");
 373         ptr = (uint32_t *)&phba->slim2p->pcb;
 374         i = sizeof(PCB_t);
 375         while (i > 0) {
 376                 len +=  snprintf(buf+len, size-len,
 377                 "%08x: %08x %08x %08x %08x %08x %08x %08x %08x\n",
 378                 off, *ptr, *(ptr+1), *(ptr+2), *(ptr+3), *(ptr+4),
 379                 *(ptr+5), *(ptr+6), *(ptr+7));
 380                 ptr += 8;
 381                 i -= (8 * sizeof(uint32_t));
 382                 off += (8 * sizeof(uint32_t));
 383         }
 384
 385         pgpp = (struct lpfc_pgp *)&phba->slim2p->mbx.us.s3_pgp.port;
 386         pring = &psli->ring[0];
 387         len +=  snprintf(buf+len, size-len,
 388                 "Ring 0: CMD GetInx:%d (Max:%d Next:%d Local:%d flg:x%x)  "
 389                 "RSP PutInx:%d Max:%d\n",
 390                 pgpp->cmdGetInx, pring->numCiocb,
 391                 pring->next_cmdidx, pring->local_getidx, pring->flag,
 392                 pgpp->rspPutInx, pring->numRiocb);
 393         pgpp++;
 394
 395         pring = &psli->ring[1];
 396         len +=  snprintf(buf+len, size-len,
 397                 "Ring 1: CMD GetInx:%d (Max:%d Next:%d Local:%d flg:x%x)  "
 398                 "RSP PutInx:%d Max:%d\n",
 399                 pgpp->cmdGetInx, pring->numCiocb,
 400                 pring->next_cmdidx, pring->local_getidx, pring->flag,
 401                 pgpp->rspPutInx, pring->numRiocb);
 402         pgpp++;
 403
 404         pring = &psli->ring[2];
 405         len +=  snprintf(buf+len, size-len,
 406                 "Ring 2: CMD GetInx:%d (Max:%d Next:%d Local:%d flg:x%x)  "
 407                 "RSP PutInx:%d Max:%d\n",
 408                 pgpp->cmdGetInx, pring->numCiocb,
 409                 pring->next_cmdidx, pring->local_getidx, pring->flag,
 410                 pgpp->rspPutInx, pring->numRiocb);
 411         pgpp++;
 412
 413         pring = &psli->ring[3];
 414         len +=  snprintf(buf+len, size-len,
 415                 "Ring 3: CMD GetInx:%d (Max:%d Next:%d Local:%d flg:x%x)  "
 416                 "RSP PutInx:%d Max:%d\n",
 417                 pgpp->cmdGetInx, pring->numCiocb,
 418                 pring->next_cmdidx, pring->local_getidx, pring->flag,
 419                 pgpp->rspPutInx, pring->numRiocb);
 420
 421
 422         ptr = (uint32_t *)&phba->slim2p->mbx.us.s3_pgp.hbq_get;
 423         word0 = readl(phba->HAregaddr);
 424         word1 = readl(phba->CAregaddr);
 425         word2 = readl(phba->HSregaddr);
 426         word3 = readl(phba->HCregaddr);
 427         len +=  snprintf(buf+len, size-len, "HA:%08x CA:%08x HS:%08x HC:%08x\n",
 428         word0, word1, word2, word3);
 429         spin_unlock_irq(&phba->hbalock);
 430         return len;
 431 }
 432
 433 static int
 434 lpfc_debugfs_nodelist_data(struct lpfc_vport *vport, char *buf, int size)
 435 {
 436         int len = 0;
 437         int cnt;
 438         struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
 439         struct lpfc_nodelist *ndlp;
 440         unsigned char *statep, *name;
 441
 442         cnt = (LPFC_NODELIST_SIZE / LPFC_NODELIST_ENTRY_SIZE);
 443
 444         spin_lock_irq(shost->host_lock);
 445         list_for_each_entry(ndlp, &vport->fc_nodes, nlp_listp) {
 446                 if (!cnt) {
 447                         len +=  snprintf(buf+len, size-len,
 448                                 "Missing Nodelist Entries\n");
 449                         break;
 450                 }
 451                 cnt--;
 452                 switch (ndlp->nlp_state) {
 453                 case NLP_STE_UNUSED_NODE:
 454                         statep = "UNUSED";
 455                         break;
 456                 case NLP_STE_PLOGI_ISSUE:
 457                         statep = "PLOGI ";
 458                         break;
 459                 case NLP_STE_ADISC_ISSUE:
 460                         statep = "ADISC ";
 461                         break;
 462                 case NLP_STE_REG_LOGIN_ISSUE:
 463                         statep = "REGLOG";
 464                         break;
 465                 case NLP_STE_PRLI_ISSUE:
 466                         statep = "PRLI  ";
 467                         break;
 468                 case NLP_STE_UNMAPPED_NODE:
 469                         statep = "UNMAP ";
 470                         break;
 471                 case NLP_STE_MAPPED_NODE:
 472                         statep = "MAPPED";
 473                         break;
 474                 case NLP_STE_NPR_NODE:
 475                         statep = "NPR   ";
 476                         break;
 477                 default:
 478                         statep = "UNKNOWN";
 479                 }
 480                 len +=  snprintf(buf+len, size-len, "%s DID:x%06x ",
 481                         statep, ndlp->nlp_DID);
 482                 name = (unsigned char *)&ndlp->nlp_portname;
 483                 len +=  snprintf(buf+len, size-len,
 484                         "WWPN %02x:%02x:%02x:%02x:%02x:%02x:%02x:%02x ",
 485                         *name, *(name+1), *(name+2), *(name+3),
 486                         *(name+4), *(name+5), *(name+6), *(name+7));
 487                 name = (unsigned char *)&ndlp->nlp_nodename;
 488                 len +=  snprintf(buf+len, size-len,
 489                         "WWNN %02x:%02x:%02x:%02x:%02x:%02x:%02x:%02x ",
 490                         *name, *(name+1), *(name+2), *(name+3),
 491                         *(name+4), *(name+5), *(name+6), *(name+7));
 492                 len +=  snprintf(buf+len, size-len, "RPI:%03d flag:x%08x ",
 493                         ndlp->nlp_rpi, ndlp->nlp_flag);
 494                 if (!ndlp->nlp_type)
 495                         len +=  snprintf(buf+len, size-len, "UNKNOWN_TYPE ");
 496                 if (ndlp->nlp_type & NLP_FC_NODE)
 497                         len +=  snprintf(buf+len, size-len, "FC_NODE ");
 498                 if (ndlp->nlp_type & NLP_FABRIC)
 499                         len +=  snprintf(buf+len, size-len, "FABRIC ");
 500                 if (ndlp->nlp_type & NLP_FCP_TARGET)
 501                         len +=  snprintf(buf+len, size-len, "FCP_TGT sid:%d ",
 502                                 ndlp->nlp_sid);
 503                 if (ndlp->nlp_type & NLP_FCP_INITIATOR)
 504                         len +=  snprintf(buf+len, size-len, "FCP_INITIATOR ");
 505                 len += snprintf(buf+len, size-len, "usgmap:%x ",
 506                         ndlp->nlp_usg_map);
 507                 len += snprintf(buf+len, size-len, "refcnt:%x",
 508                         atomic_read(&ndlp->kref.refcount));
 509                 len +=  snprintf(buf+len, size-len, "\n");
 510         }
 511         spin_unlock_irq(shost->host_lock);
 512         return len;
 513 }
 514 #endif
 515
 516
 517 inline void
 518 lpfc_debugfs_disc_trc(struct lpfc_vport *vport, int mask, char *fmt,
 519         uint32_t data1, uint32_t data2, uint32_t data3)
 520 {
 521 #ifdef CONFIG_LPFC_DEBUG_FS
 522         struct lpfc_debugfs_trc *dtp;
 523         int index;
 524
 525         if (!(lpfc_debugfs_mask_disc_trc & mask))
 526                 return;
 527
 528         if (!lpfc_debugfs_enable || !lpfc_debugfs_max_disc_trc ||
 529                 !vport || !vport->disc_trc)
 530                 return;
 531
 532         index = atomic_inc_return(&vport->disc_trc_cnt) &
 533                 (lpfc_debugfs_max_disc_trc - 1);
 534         dtp = vport->disc_trc + index;
 535         dtp->fmt = fmt;
 536         dtp->data1 = data1;
 537         dtp->data2 = data2;
 538         dtp->data3 = data3;
 539         dtp->seq_cnt = atomic_inc_return(&lpfc_debugfs_seq_trc_cnt);
 540         dtp->jif = jiffies;
 541 #endif
 542         return;
 543 }
 544
 545 inline void
 546 lpfc_debugfs_slow_ring_trc(struct lpfc_hba *phba, char *fmt,
 547         uint32_t data1, uint32_t data2, uint32_t data3)
 548 {
 549 #ifdef CONFIG_LPFC_DEBUG_FS
 550         struct lpfc_debugfs_trc *dtp;
 551         int index;
 552
 553         if (!lpfc_debugfs_enable || !lpfc_debugfs_max_slow_ring_trc ||
 554                 !phba || !phba->slow_ring_trc)
 555                 return;
 556
 557         index = atomic_inc_return(&phba->slow_ring_trc_cnt) &
 558                 (lpfc_debugfs_max_slow_ring_trc - 1);
 559         dtp = phba->slow_ring_trc + index;
 560         dtp->fmt = fmt;
 561         dtp->data1 = data1;
 562         dtp->data2 = data2;
 563         dtp->data3 = data3;
 564         dtp->seq_cnt = atomic_inc_return(&lpfc_debugfs_seq_trc_cnt);
 565         dtp->jif = jiffies;
 566 #endif
 567         return;
 568 }
 569
 570 #ifdef CONFIG_LPFC_DEBUG_FS
 571 static int
 572 lpfc_debugfs_disc_trc_open(struct inode *inode, struct file *file)
 573 {
 574         struct lpfc_vport *vport = inode->i_private;
 575         struct lpfc_debug *debug;
 576         int size;
 577         int rc = -ENOMEM;
 578
 579         if (!lpfc_debugfs_max_disc_trc) {
 580                  rc = -ENOSPC;
 581                 goto out;
 582         }
 583
 584         debug = kmalloc(sizeof(*debug), GFP_KERNEL);
 585         if (!debug)
 586                 goto out;
 587
 588         /* Round to page boundry */
 589         size =  (lpfc_debugfs_max_disc_trc * LPFC_DEBUG_TRC_ENTRY_SIZE);
 590         size = PAGE_ALIGN(size);
 591
 592         debug->buffer = kmalloc(size, GFP_KERNEL);
 593         if (!debug->buffer) {
 594                 kfree(debug);
 595                 goto out;
 596         }
 597
 598         debug->len = lpfc_debugfs_disc_trc_data(vport, debug->buffer, size);
 599         file->private_data = debug;
 600
 601         rc = 0;
 602 out:
 603         return rc;
 604 }
 605
 606 static int
 607 lpfc_debugfs_slow_ring_trc_open(struct inode *inode, struct file *file)
 608 {
 609         struct lpfc_hba *phba = inode->i_private;
 610         struct lpfc_debug *debug;
 611         int size;
 612         int rc = -ENOMEM;
 613
 614         if (!lpfc_debugfs_max_slow_ring_trc) {
 615                  rc = -ENOSPC;
 616                 goto out;
 617         }
 618
 619         debug = kmalloc(sizeof(*debug), GFP_KERNEL);
 620         if (!debug)
 621                 goto out;
 622
 623         /* Round to page boundry */
 624         size =  (lpfc_debugfs_max_slow_ring_trc * LPFC_DEBUG_TRC_ENTRY_SIZE);
 625         size = PAGE_ALIGN(size);
 626
 627         debug->buffer = kmalloc(size, GFP_KERNEL);
 628         if (!debug->buffer) {
 629                 kfree(debug);
 630                 goto out;
 631         }
 632
 633         debug->len = lpfc_debugfs_slow_ring_trc_data(phba, debug->buffer, size);
 634         file->private_data = debug;
 635
 636         rc = 0;
 637 out:
 638         return rc;
 639 }
 640
 641 static int
 642 lpfc_debugfs_hbqinfo_open(struct inode *inode, struct file *file)
 643 {
 644         struct lpfc_hba *phba = inode->i_private;
 645         struct lpfc_debug *debug;
 646         int rc = -ENOMEM;
 647
 648         debug = kmalloc(sizeof(*debug), GFP_KERNEL);
 649         if (!debug)
 650                 goto out;
 651
 652         /* Round to page boundry */
 653         debug->buffer = kmalloc(LPFC_HBQINFO_SIZE, GFP_KERNEL);
 654         if (!debug->buffer) {
 655                 kfree(debug);
 656                 goto out;
 657         }
 658
 659         debug->len = lpfc_debugfs_hbqinfo_data(phba, debug->buffer,
 660                 LPFC_HBQINFO_SIZE);
 661         file->private_data = debug;
 662
 663         rc = 0;
 664 out:
 665         return rc;
 666 }
 667
 668 static int
 669 lpfc_debugfs_dumpHBASlim_open(struct inode *inode, struct file *file)
 670 {
 671         struct lpfc_hba *phba = inode->i_private;
 672         struct lpfc_debug *debug;
 673         int rc = -ENOMEM;
 674
 675         debug = kmalloc(sizeof(*debug), GFP_KERNEL);
 676         if (!debug)
 677                 goto out;
 678
 679         /* Round to page boundry */
 680         debug->buffer = kmalloc(LPFC_DUMPHBASLIM_SIZE, GFP_KERNEL);
 681         if (!debug->buffer) {
 682                 kfree(debug);
 683                 goto out;
 684         }
 685
 686         debug->len = lpfc_debugfs_dumpHBASlim_data(phba, debug->buffer,
 687                 LPFC_DUMPHBASLIM_SIZE);
 688         file->private_data = debug;
 689
 690         rc = 0;
 691 out:
 692         return rc;
 693 }
 694
 695 static int
 696 lpfc_debugfs_dumpHostSlim_open(struct inode *inode, struct file *file)
 697 {
 698         struct lpfc_hba *phba = inode->i_private;
 699         struct lpfc_debug *debug;
 700         int rc = -ENOMEM;
 701
 702         debug = kmalloc(sizeof(*debug), GFP_KERNEL);
 703         if (!debug)
 704                 goto out;
 705
 706         /* Round to page boundry */
 707         debug->buffer = kmalloc(LPFC_DUMPHOSTSLIM_SIZE, GFP_KERNEL);
 708         if (!debug->buffer) {
 709                 kfree(debug);
 710                 goto out;
 711         }
 712
 713         debug->len = lpfc_debugfs_dumpHostSlim_data(phba, debug->buffer,
 714                 LPFC_DUMPHOSTSLIM_SIZE);
 715         file->private_data = debug;
 716
 717         rc = 0;
 718 out:
 719         return rc;
 720 }
 721
 722 static int
 723 lpfc_debugfs_nodelist_open(struct inode *inode, struct file *file)
 724 {
 725         struct lpfc_vport *vport = inode->i_private;
 726         struct lpfc_debug *debug;
 727         int rc = -ENOMEM;
 728
 729         debug = kmalloc(sizeof(*debug), GFP_KERNEL);
 730         if (!debug)
 731                 goto out;
 732
 733         /* Round to page boundry */
 734         debug->buffer = kmalloc(LPFC_NODELIST_SIZE, GFP_KERNEL);
 735         if (!debug->buffer) {
 736                 kfree(debug);
 737                 goto out;
 738         }
 739
 740         debug->len = lpfc_debugfs_nodelist_data(vport, debug->buffer,
 741                 LPFC_NODELIST_SIZE);
 742         file->private_data = debug;
 743
 744         rc = 0;
 745 out:
 746         return rc;
 747 }
 748
 749 static loff_t
 750 lpfc_debugfs_lseek(struct file *file, loff_t off, int whence)
 751 {
 752         struct lpfc_debug *debug;
 753         loff_t pos = -1;
 754
 755         debug = file->private_data;
 756
 757         switch (whence) {
 758         case 0:
 759                 pos = off;
 760                 break;
 761         case 1:
 762                 pos = file->f_pos + off;
 763                 break;
 764         case 2:
 765                 pos = debug->len - off;
 766         }
 767         return (pos < 0 || pos > debug->len) ? -EINVAL : (file->f_pos = pos);
 768 }
 769
 770 static ssize_t
 771 lpfc_debugfs_read(struct file *file, char __user *buf,
 772                   size_t nbytes, loff_t *ppos)
 773 {
 774         struct lpfc_debug *debug = file->private_data;
 775         return simple_read_from_buffer(buf, nbytes, ppos, debug->buffer,
 776                                        debug->len);
 777 }
 778
 779 static int
 780 lpfc_debugfs_release(struct inode *inode, struct file *file)
 781 {
 782         struct lpfc_debug *debug = file->private_data;
 783
 784         kfree(debug->buffer);
 785         kfree(debug);
 786
 787         return 0;
 788 }
 789
 790 #undef lpfc_debugfs_op_disc_trc
 791 static struct file_operations lpfc_debugfs_op_disc_trc = {
 792         .owner =        THIS_MODULE,
 793         .open =         lpfc_debugfs_disc_trc_open,
 794         .llseek =       lpfc_debugfs_lseek,
 795         .read =         lpfc_debugfs_read,
 796         .release =      lpfc_debugfs_release,
 797 };
 798
 799 #undef lpfc_debugfs_op_nodelist
 800 static struct file_operations lpfc_debugfs_op_nodelist = {
 801         .owner =        THIS_MODULE,
 802         .open =         lpfc_debugfs_nodelist_open,
 803         .llseek =       lpfc_debugfs_lseek,
 804         .read =         lpfc_debugfs_read,
 805         .release =      lpfc_debugfs_release,
 806 };
 807
 808 #undef lpfc_debugfs_op_hbqinfo
 809 static struct file_operations lpfc_debugfs_op_hbqinfo = {
 810         .owner =        THIS_MODULE,
 811         .open =         lpfc_debugfs_hbqinfo_open,
 812         .llseek =       lpfc_debugfs_lseek,
 813         .read =         lpfc_debugfs_read,
 814         .release =      lpfc_debugfs_release,
 815 };
 816
 817 #undef lpfc_debugfs_op_dumpHBASlim
 818 static struct file_operations lpfc_debugfs_op_dumpHBASlim = {
 819         .owner =        THIS_MODULE,
 820         .open =         lpfc_debugfs_dumpHBASlim_open,
 821         .llseek =       lpfc_debugfs_lseek,
 822         .read =         lpfc_debugfs_read,
 823         .release =      lpfc_debugfs_release,
 824 };
 825
 826 #undef lpfc_debugfs_op_dumpHostSlim
 827 static struct file_operations lpfc_debugfs_op_dumpHostSlim = {
 828         .owner =        THIS_MODULE,
 829         .open =         lpfc_debugfs_dumpHostSlim_open,
 830         .llseek =       lpfc_debugfs_lseek,
 831         .read =         lpfc_debugfs_read,
 832         .release =      lpfc_debugfs_release,
 833 };
 834
 835 #undef lpfc_debugfs_op_slow_ring_trc
 836 static struct file_operations lpfc_debugfs_op_slow_ring_trc = {
 837         .owner =        THIS_MODULE,
 838         .open =         lpfc_debugfs_slow_ring_trc_open,
 839         .llseek =       lpfc_debugfs_lseek,
 840         .read =         lpfc_debugfs_read,
 841         .release =      lpfc_debugfs_release,
 842 };
 843
 844 static struct dentry *lpfc_debugfs_root = NULL;
 845 static atomic_t lpfc_debugfs_hba_count;
 846 #endif
 847
 848 inline void
 849 lpfc_debugfs_initialize(struct lpfc_vport *vport)
 850 {
 851 #ifdef CONFIG_LPFC_DEBUG_FS
 852         struct lpfc_hba   *phba = vport->phba;
 853         char name[64];
 854         uint32_t num, i;
 855
 856         if (!lpfc_debugfs_enable)
 857                 return;
 858
 859         /* Setup lpfc root directory */
 860         if (!lpfc_debugfs_root) {
 861                 lpfc_debugfs_root = debugfs_create_dir("lpfc", NULL);
 862                 atomic_set(&lpfc_debugfs_hba_count, 0);
 863                 if (!lpfc_debugfs_root) {
 864                         lpfc_printf_vlog(vport, KERN_ERR, LOG_INIT,
 865                                          "0409 Cannot create debugfs root\n");
 866                         goto debug_failed;
 867                 }
 868         }
 869         if (!lpfc_debugfs_start_time)
 870                 lpfc_debugfs_start_time = jiffies;
 871
 872         /* Setup lpfcX directory for specific HBA */
 873         snprintf(name, sizeof(name), "lpfc%d", phba->brd_no);
 874         if (!phba->hba_debugfs_root) {
 875                 phba->hba_debugfs_root =
 876                         debugfs_create_dir(name, lpfc_debugfs_root);
 877                 if (!phba->hba_debugfs_root) {
 878                         lpfc_printf_vlog(vport, KERN_ERR, LOG_INIT,
 879                                          "0409 Cannot create debugfs hba\n");
 880                         goto debug_failed;
 881                 }
 882                 atomic_inc(&lpfc_debugfs_hba_count);
 883                 atomic_set(&phba->debugfs_vport_count, 0);
 884
 885                 /* Setup hbqinfo */
 886                 snprintf(name, sizeof(name), "hbqinfo");
 887                 phba->debug_hbqinfo =
 888                         debugfs_create_file(name, S_IFREG|S_IRUGO|S_IWUSR,
 889                                  phba->hba_debugfs_root,
 890                                  phba, &lpfc_debugfs_op_hbqinfo);
 891                 if (!phba->debug_hbqinfo) {
 892                         lpfc_printf_vlog(vport, KERN_ERR, LOG_INIT,
 893                                 "0409 Cannot create debugfs hbqinfo\n");
 894                         goto debug_failed;
 895                 }
 896
 897                 /* Setup dumpHBASlim */
 898                 snprintf(name, sizeof(name), "dumpHBASlim");
 899                 phba->debug_dumpHBASlim =
 900                         debugfs_create_file(name, S_IFREG|S_IRUGO|S_IWUSR,
 901                                  phba->hba_debugfs_root,
 902                                  phba, &lpfc_debugfs_op_dumpHBASlim);
 903                 if (!phba->debug_dumpHBASlim) {
 904                         lpfc_printf_vlog(vport, KERN_ERR, LOG_INIT,
 905                                 "0409 Cannot create debugfs dumpHBASlim\n");
 906                         goto debug_failed;
 907                 }
 908
 909                 /* Setup dumpHostSlim */
 910                 snprintf(name, sizeof(name), "dumpHostSlim");
 911                 phba->debug_dumpHostSlim =
 912                         debugfs_create_file(name, S_IFREG|S_IRUGO|S_IWUSR,
 913                                  phba->hba_debugfs_root,
 914                                  phba, &lpfc_debugfs_op_dumpHostSlim);
 915                 if (!phba->debug_dumpHostSlim) {
 916                         lpfc_printf_vlog(vport, KERN_ERR, LOG_INIT,
 917                                 "0409 Cannot create debugfs dumpHostSlim\n");
 918                         goto debug_failed;
 919                 }
 920
 921                 /* Setup slow ring trace */
 922                 if (lpfc_debugfs_max_slow_ring_trc) {
 923                         num = lpfc_debugfs_max_slow_ring_trc - 1;
 924                         if (num & lpfc_debugfs_max_slow_ring_trc) {
 925                                 /* Change to be a power of 2 */
 926                                 num = lpfc_debugfs_max_slow_ring_trc;
 927                                 i = 0;
 928                                 while (num > 1) {
 929                                         num = num >> 1;
 930                                         i++;
 931                                 }
 932                                 lpfc_debugfs_max_slow_ring_trc = (1 << i);
 933                                 printk(KERN_ERR
 934                                        "lpfc_debugfs_max_disc_trc changed to "
 935                                        "%d\n", lpfc_debugfs_max_disc_trc);
 936                         }
 937                 }
 938
 939
 940                 snprintf(name, sizeof(name), "slow_ring_trace");
 941                 phba->debug_slow_ring_trc =
 942                         debugfs_create_file(name, S_IFREG|S_IRUGO|S_IWUSR,
 943                                  phba->hba_debugfs_root,
 944                                  phba, &lpfc_debugfs_op_slow_ring_trc);
 945                 if (!phba->debug_slow_ring_trc) {
 946                         lpfc_printf_vlog(vport, KERN_ERR, LOG_INIT,
 947                                          "0409 Cannot create debugfs "
 948                                          "slow_ring_trace\n");
 949                         goto debug_failed;
 950                 }
 951                 if (!phba->slow_ring_trc) {
 952                         phba->slow_ring_trc = kmalloc(
 953                                 (sizeof(struct lpfc_debugfs_trc) *
 954                                 lpfc_debugfs_max_slow_ring_trc),
 955                                 GFP_KERNEL);
 956                         if (!phba->slow_ring_trc) {
 957                                 lpfc_printf_vlog(vport, KERN_ERR, LOG_INIT,
 958                                                  "0409 Cannot create debugfs "
 959                                                  "slow_ring buffer\n");
 960                                 goto debug_failed;
 961                         }
 962                         atomic_set(&phba->slow_ring_trc_cnt, 0);
 963                         memset(phba->slow_ring_trc, 0,
 964                                 (sizeof(struct lpfc_debugfs_trc) *
 965                                 lpfc_debugfs_max_slow_ring_trc));
 966                 }
 967         }
 968
 969         snprintf(name, sizeof(name), "vport%d", vport->vpi);
 970         if (!vport->vport_debugfs_root) {
 971                 vport->vport_debugfs_root =
 972                         debugfs_create_dir(name, phba->hba_debugfs_root);
 973                 if (!vport->vport_debugfs_root) {
 974                         lpfc_printf_vlog(vport, KERN_ERR, LOG_INIT,
 975                                          "0409 Cant create debugfs");
 976                         goto debug_failed;
 977                 }
 978                 atomic_inc(&phba->debugfs_vport_count);
 979         }
 980
 981         if (lpfc_debugfs_max_disc_trc) {
 982                 num = lpfc_debugfs_max_disc_trc - 1;
 983                 if (num & lpfc_debugfs_max_disc_trc) {
 984                         /* Change to be a power of 2 */
 985                         num = lpfc_debugfs_max_disc_trc;
 986                         i = 0;
 987                         while (num > 1) {
 988                                 num = num >> 1;
 989                                 i++;
 990                         }
 991                         lpfc_debugfs_max_disc_trc = (1 << i);
 992                         printk(KERN_ERR
 993                                "lpfc_debugfs_max_disc_trc changed to %d\n",
 994                                lpfc_debugfs_max_disc_trc);
 995                 }
 996         }
 997
 998         vport->disc_trc = kzalloc(
 999                 (sizeof(struct lpfc_debugfs_trc) * lpfc_debugfs_max_disc_trc),
1000                 GFP_KERNEL);
1001
1002         if (!vport->disc_trc) {
1003                 lpfc_printf_vlog(vport, KERN_ERR, LOG_INIT,
1004                                  "0409 Cannot create debugfs disc trace "
1005                                  "buffer\n");
1006                 goto debug_failed;
1007         }
1008         atomic_set(&vport->disc_trc_cnt, 0);
1009
1010         snprintf(name, sizeof(name), "discovery_trace");
1011         vport->debug_disc_trc =
1012                 debugfs_create_file(name, S_IFREG|S_IRUGO|S_IWUSR,
1013                                  vport->vport_debugfs_root,
1014                                  vport, &lpfc_debugfs_op_disc_trc);
1015         if (!vport->debug_disc_trc) {
1016                 lpfc_printf_vlog(vport, KERN_ERR, LOG_INIT,
1017                                  "0409 Cannot create debugfs "
1018                                  "discovery_trace\n");
1019                 goto debug_failed;
1020         }
1021         snprintf(name, sizeof(name), "nodelist");
1022         vport->debug_nodelist =
1023                 debugfs_create_file(name, S_IFREG|S_IRUGO|S_IWUSR,
1024                                  vport->vport_debugfs_root,
1025                                  vport, &lpfc_debugfs_op_nodelist);
1026         if (!vport->debug_nodelist) {
1027                 lpfc_printf_vlog(vport, KERN_ERR, LOG_INIT,
1028                                  "0409 Cant create debugfs nodelist");
1029                 goto debug_failed;
1030         }
1031 debug_failed:
1032         return;
1033 #endif
1034 }
1035
1036
1037 inline void
1038 lpfc_debugfs_terminate(struct lpfc_vport *vport)
1039 {
1040 #ifdef CONFIG_LPFC_DEBUG_FS
1041         struct lpfc_hba   *phba = vport->phba;
1042
1043         if (vport->disc_trc) {
1044                 kfree(vport->disc_trc);
1045                 vport->disc_trc = NULL;
1046         }
1047         if (vport->debug_disc_trc) {
1048                 debugfs_remove(vport->debug_disc_trc); /* discovery_trace */
1049                 vport->debug_disc_trc = NULL;
1050         }
1051         if (vport->debug_nodelist) {
1052                 debugfs_remove(vport->debug_nodelist); /* nodelist */
1053                 vport->debug_nodelist = NULL;
1054         }
1055
1056         if (vport->vport_debugfs_root) {
1057                 debugfs_remove(vport->vport_debugfs_root); /* vportX */
1058                 vport->vport_debugfs_root = NULL;
1059                 atomic_dec(&phba->debugfs_vport_count);
1060         }
1061         if (atomic_read(&phba->debugfs_vport_count) == 0) {
1062
1063                 if (phba->debug_hbqinfo) {
1064                         debugfs_remove(phba->debug_hbqinfo); /* hbqinfo */
1065                         phba->debug_hbqinfo = NULL;
1066                 }
1067                 if (phba->debug_dumpHBASlim) {
1068                         debugfs_remove(phba->debug_dumpHBASlim); /* HBASlim */
1069                         phba->debug_dumpHBASlim = NULL;
1070                 }
1071                 if (phba->debug_dumpHostSlim) {
1072                         debugfs_remove(phba->debug_dumpHostSlim); /* HostSlim */
1073                         phba->debug_dumpHostSlim = NULL;
1074                 }
1075                 if (phba->slow_ring_trc) {
1076                         kfree(phba->slow_ring_trc);
1077                         phba->slow_ring_trc = NULL;
1078                 }
1079                 if (phba->debug_slow_ring_trc) {
1080                         /* slow_ring_trace */
1081                         debugfs_remove(phba->debug_slow_ring_trc);
1082                         phba->debug_slow_ring_trc = NULL;
1083                 }
1084
1085                 if (phba->hba_debugfs_root) {
1086                         debugfs_remove(phba->hba_debugfs_root); /* lpfcX */
1087                         phba->hba_debugfs_root = NULL;
1088                         atomic_dec(&lpfc_debugfs_hba_count);
1089                 }
1090
1091                 if (atomic_read(&lpfc_debugfs_hba_count) == 0) {
1092                         debugfs_remove(lpfc_debugfs_root); /* lpfc */
1093                         lpfc_debugfs_root = NULL;
1094                 }
1095         }
1096 #endif
1097         return;
1098 }
1099
1100