1 /******************************************************************* 2 * This file is part of the Emulex Linux Device Driver for * 3 * Fibre Channel Host Bus Adapters. * 4 * Copyright (C) 2007-2011 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/slab.h> 28 #include <linux/pci.h> 29 #include <linux/spinlock.h> 30 #include <linux/ctype.h> 31 32 #include <scsi/scsi.h> 33 #include <scsi/scsi_device.h> 34 #include <scsi/scsi_host.h> 35 #include <scsi/scsi_transport_fc.h> 36 37 #include "lpfc_hw4.h" 38 #include "lpfc_hw.h" 39 #include "lpfc_sli.h" 40 #include "lpfc_sli4.h" 41 #include "lpfc_nl.h" 42 #include "lpfc_disc.h" 43 #include "lpfc_scsi.h" 44 #include "lpfc.h" 45 #include "lpfc_logmsg.h" 46 #include "lpfc_crtn.h" 47 #include "lpfc_vport.h" 48 #include "lpfc_version.h" 49 #include "lpfc_compat.h" 50 #include "lpfc_debugfs.h" 51 52 #ifdef CONFIG_SCSI_LPFC_DEBUG_FS 53 /* 54 * debugfs interface 55 * 56 * To access this interface the user should: 57 * # mount -t debugfs none /sys/kernel/debug 58 * 59 * The lpfc debugfs directory hierarchy is: 60 * /sys/kernel/debug/lpfc/fnX/vportY 61 * where X is the lpfc hba function unique_id 62 * where Y is the vport VPI on that hba 63 * 64 * Debugging services available per vport: 65 * discovery_trace 66 * This is an ACSII readable file that contains a trace of the last 67 * lpfc_debugfs_max_disc_trc events that happened on a specific vport. 68 * See lpfc_debugfs.h for different categories of discovery events. 69 * To enable the discovery trace, the following module parameters must be set: 70 * lpfc_debugfs_enable=1 Turns on lpfc debugfs filesystem support 71 * lpfc_debugfs_max_disc_trc=X Where X is the event trace depth for 72 * EACH vport. X MUST also be a power of 2. 73 * lpfc_debugfs_mask_disc_trc=Y Where Y is an event mask as defined in 74 * lpfc_debugfs.h . 75 * 76 * slow_ring_trace 77 * This is an ACSII readable file that contains a trace of the last 78 * lpfc_debugfs_max_slow_ring_trc events that happened on a specific HBA. 79 * To enable the slow ring trace, the following module parameters must be set: 80 * lpfc_debugfs_enable=1 Turns on lpfc debugfs filesystem support 81 * lpfc_debugfs_max_slow_ring_trc=X Where X is the event trace depth for 82 * the HBA. X MUST also be a power of 2. 83 */ 84 static int lpfc_debugfs_enable = 1; 85 module_param(lpfc_debugfs_enable, int, S_IRUGO); 86 MODULE_PARM_DESC(lpfc_debugfs_enable, "Enable debugfs services"); 87 88 /* This MUST be a power of 2 */ 89 static int lpfc_debugfs_max_disc_trc; 90 module_param(lpfc_debugfs_max_disc_trc, int, S_IRUGO); 91 MODULE_PARM_DESC(lpfc_debugfs_max_disc_trc, 92 "Set debugfs discovery trace depth"); 93 94 /* This MUST be a power of 2 */ 95 static int lpfc_debugfs_max_slow_ring_trc; 96 module_param(lpfc_debugfs_max_slow_ring_trc, int, S_IRUGO); 97 MODULE_PARM_DESC(lpfc_debugfs_max_slow_ring_trc, 98 "Set debugfs slow ring trace depth"); 99 100 static int lpfc_debugfs_mask_disc_trc; 101 module_param(lpfc_debugfs_mask_disc_trc, int, S_IRUGO); 102 MODULE_PARM_DESC(lpfc_debugfs_mask_disc_trc, 103 "Set debugfs discovery trace mask"); 104 105 #include <linux/debugfs.h> 106 107 static atomic_t lpfc_debugfs_seq_trc_cnt = ATOMIC_INIT(0); 108 static unsigned long lpfc_debugfs_start_time = 0L; 109 110 /* iDiag */ 111 static struct lpfc_idiag idiag; 112 113 /** 114 * lpfc_debugfs_disc_trc_data - Dump discovery logging to a buffer 115 * @vport: The vport to gather the log info from. 116 * @buf: The buffer to dump log into. 117 * @size: The maximum amount of data to process. 118 * 119 * Description: 120 * This routine gathers the lpfc discovery debugfs data from the @vport and 121 * dumps it to @buf up to @size number of bytes. It will start at the next entry 122 * in the log and process the log until the end of the buffer. Then it will 123 * gather from the beginning of the log and process until the current entry. 124 * 125 * Notes: 126 * Discovery logging will be disabled while while this routine dumps the log. 127 * 128 * Return Value: 129 * This routine returns the amount of bytes that were dumped into @buf and will 130 * not exceed @size. 131 **/ 132 static int 133 lpfc_debugfs_disc_trc_data(struct lpfc_vport *vport, char *buf, int size) 134 { 135 int i, index, len, enable; 136 uint32_t ms; 137 struct lpfc_debugfs_trc *dtp; 138 char buffer[LPFC_DEBUG_TRC_ENTRY_SIZE]; 139 140 enable = lpfc_debugfs_enable; 141 lpfc_debugfs_enable = 0; 142 143 len = 0; 144 index = (atomic_read(&vport->disc_trc_cnt) + 1) & 145 (lpfc_debugfs_max_disc_trc - 1); 146 for (i = index; i < lpfc_debugfs_max_disc_trc; 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 for (i = 0; i < index; i++) { 158 dtp = vport->disc_trc + i; 159 if (!dtp->fmt) 160 continue; 161 ms = jiffies_to_msecs(dtp->jif - lpfc_debugfs_start_time); 162 snprintf(buffer, 163 LPFC_DEBUG_TRC_ENTRY_SIZE, "%010d:%010d ms:%s\n", 164 dtp->seq_cnt, ms, dtp->fmt); 165 len += snprintf(buf+len, size-len, buffer, 166 dtp->data1, dtp->data2, dtp->data3); 167 } 168 169 lpfc_debugfs_enable = enable; 170 return len; 171 } 172 173 /** 174 * lpfc_debugfs_slow_ring_trc_data - Dump slow ring logging to a buffer 175 * @phba: The HBA to gather the log info from. 176 * @buf: The buffer to dump log into. 177 * @size: The maximum amount of data to process. 178 * 179 * Description: 180 * This routine gathers the lpfc slow ring debugfs data from the @phba and 181 * dumps it to @buf up to @size number of bytes. It will start at the next entry 182 * in the log and process the log until the end of the buffer. Then it will 183 * gather from the beginning of the log and process until the current entry. 184 * 185 * Notes: 186 * Slow ring logging will be disabled while while this routine dumps the log. 187 * 188 * Return Value: 189 * This routine returns the amount of bytes that were dumped into @buf and will 190 * not exceed @size. 191 **/ 192 static int 193 lpfc_debugfs_slow_ring_trc_data(struct lpfc_hba *phba, char *buf, int size) 194 { 195 int i, index, len, enable; 196 uint32_t ms; 197 struct lpfc_debugfs_trc *dtp; 198 char buffer[LPFC_DEBUG_TRC_ENTRY_SIZE]; 199 200 201 enable = lpfc_debugfs_enable; 202 lpfc_debugfs_enable = 0; 203 204 len = 0; 205 index = (atomic_read(&phba->slow_ring_trc_cnt) + 1) & 206 (lpfc_debugfs_max_slow_ring_trc - 1); 207 for (i = index; i < lpfc_debugfs_max_slow_ring_trc; i++) { 208 dtp = phba->slow_ring_trc + i; 209 if (!dtp->fmt) 210 continue; 211 ms = jiffies_to_msecs(dtp->jif - lpfc_debugfs_start_time); 212 snprintf(buffer, 213 LPFC_DEBUG_TRC_ENTRY_SIZE, "%010d:%010d ms:%s\n", 214 dtp->seq_cnt, ms, dtp->fmt); 215 len += snprintf(buf+len, size-len, buffer, 216 dtp->data1, dtp->data2, dtp->data3); 217 } 218 for (i = 0; i < index; 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 } 229 230 lpfc_debugfs_enable = enable; 231 return len; 232 } 233 234 static int lpfc_debugfs_last_hbq = -1; 235 236 /** 237 * lpfc_debugfs_hbqinfo_data - Dump host buffer queue info to a buffer 238 * @phba: The HBA to gather host buffer info from. 239 * @buf: The buffer to dump log into. 240 * @size: The maximum amount of data to process. 241 * 242 * Description: 243 * This routine dumps the host buffer queue info from the @phba to @buf up to 244 * @size number of bytes. A header that describes the current hbq state will be 245 * dumped to @buf first and then info on each hbq entry will be dumped to @buf 246 * until @size bytes have been dumped or all the hbq info has been dumped. 247 * 248 * Notes: 249 * This routine will rotate through each configured HBQ each time called. 250 * 251 * Return Value: 252 * This routine returns the amount of bytes that were dumped into @buf and will 253 * not exceed @size. 254 **/ 255 static int 256 lpfc_debugfs_hbqinfo_data(struct lpfc_hba *phba, char *buf, int size) 257 { 258 int len = 0; 259 int cnt, i, j, found, posted, low; 260 uint32_t phys, raw_index, getidx; 261 struct lpfc_hbq_init *hip; 262 struct hbq_s *hbqs; 263 struct lpfc_hbq_entry *hbqe; 264 struct lpfc_dmabuf *d_buf; 265 struct hbq_dmabuf *hbq_buf; 266 267 if (phba->sli_rev != 3) 268 return 0; 269 cnt = LPFC_HBQINFO_SIZE; 270 spin_lock_irq(&phba->hbalock); 271 272 /* toggle between multiple hbqs, if any */ 273 i = lpfc_sli_hbq_count(); 274 if (i > 1) { 275 lpfc_debugfs_last_hbq++; 276 if (lpfc_debugfs_last_hbq >= i) 277 lpfc_debugfs_last_hbq = 0; 278 } 279 else 280 lpfc_debugfs_last_hbq = 0; 281 282 i = lpfc_debugfs_last_hbq; 283 284 len += snprintf(buf+len, size-len, "HBQ %d Info\n", i); 285 286 hbqs = &phba->hbqs[i]; 287 posted = 0; 288 list_for_each_entry(d_buf, &hbqs->hbq_buffer_list, list) 289 posted++; 290 291 hip = lpfc_hbq_defs[i]; 292 len += snprintf(buf+len, size-len, 293 "idx:%d prof:%d rn:%d bufcnt:%d icnt:%d acnt:%d posted %d\n", 294 hip->hbq_index, hip->profile, hip->rn, 295 hip->buffer_count, hip->init_count, hip->add_count, posted); 296 297 raw_index = phba->hbq_get[i]; 298 getidx = le32_to_cpu(raw_index); 299 len += snprintf(buf+len, size-len, 300 "entrys:%d bufcnt:%d Put:%d nPut:%d localGet:%d hbaGet:%d\n", 301 hbqs->entry_count, hbqs->buffer_count, hbqs->hbqPutIdx, 302 hbqs->next_hbqPutIdx, hbqs->local_hbqGetIdx, getidx); 303 304 hbqe = (struct lpfc_hbq_entry *) phba->hbqs[i].hbq_virt; 305 for (j=0; j<hbqs->entry_count; j++) { 306 len += snprintf(buf+len, size-len, 307 "%03d: %08x %04x %05x ", j, 308 le32_to_cpu(hbqe->bde.addrLow), 309 le32_to_cpu(hbqe->bde.tus.w), 310 le32_to_cpu(hbqe->buffer_tag)); 311 i = 0; 312 found = 0; 313 314 /* First calculate if slot has an associated posted buffer */ 315 low = hbqs->hbqPutIdx - posted; 316 if (low >= 0) { 317 if ((j >= hbqs->hbqPutIdx) || (j < low)) { 318 len += snprintf(buf+len, size-len, "Unused\n"); 319 goto skipit; 320 } 321 } 322 else { 323 if ((j >= hbqs->hbqPutIdx) && 324 (j < (hbqs->entry_count+low))) { 325 len += snprintf(buf+len, size-len, "Unused\n"); 326 goto skipit; 327 } 328 } 329 330 /* Get the Buffer info for the posted buffer */ 331 list_for_each_entry(d_buf, &hbqs->hbq_buffer_list, list) { 332 hbq_buf = container_of(d_buf, struct hbq_dmabuf, dbuf); 333 phys = ((uint64_t)hbq_buf->dbuf.phys & 0xffffffff); 334 if (phys == le32_to_cpu(hbqe->bde.addrLow)) { 335 len += snprintf(buf+len, size-len, 336 "Buf%d: %p %06x\n", i, 337 hbq_buf->dbuf.virt, hbq_buf->tag); 338 found = 1; 339 break; 340 } 341 i++; 342 } 343 if (!found) { 344 len += snprintf(buf+len, size-len, "No DMAinfo?\n"); 345 } 346 skipit: 347 hbqe++; 348 if (len > LPFC_HBQINFO_SIZE - 54) 349 break; 350 } 351 spin_unlock_irq(&phba->hbalock); 352 return len; 353 } 354 355 static int lpfc_debugfs_last_hba_slim_off; 356 357 /** 358 * lpfc_debugfs_dumpHBASlim_data - Dump HBA SLIM info to a buffer 359 * @phba: The HBA to gather SLIM info from. 360 * @buf: The buffer to dump log into. 361 * @size: The maximum amount of data to process. 362 * 363 * Description: 364 * This routine dumps the current contents of HBA SLIM for the HBA associated 365 * with @phba to @buf up to @size bytes of data. This is the raw HBA SLIM data. 366 * 367 * Notes: 368 * This routine will only dump up to 1024 bytes of data each time called and 369 * should be called multiple times to dump the entire HBA SLIM. 370 * 371 * Return Value: 372 * This routine returns the amount of bytes that were dumped into @buf and will 373 * not exceed @size. 374 **/ 375 static int 376 lpfc_debugfs_dumpHBASlim_data(struct lpfc_hba *phba, char *buf, int size) 377 { 378 int len = 0; 379 int i, off; 380 uint32_t *ptr; 381 char buffer[1024]; 382 383 off = 0; 384 spin_lock_irq(&phba->hbalock); 385 386 len += snprintf(buf+len, size-len, "HBA SLIM\n"); 387 lpfc_memcpy_from_slim(buffer, 388 phba->MBslimaddr + lpfc_debugfs_last_hba_slim_off, 1024); 389 390 ptr = (uint32_t *)&buffer[0]; 391 off = lpfc_debugfs_last_hba_slim_off; 392 393 /* Set it up for the next time */ 394 lpfc_debugfs_last_hba_slim_off += 1024; 395 if (lpfc_debugfs_last_hba_slim_off >= 4096) 396 lpfc_debugfs_last_hba_slim_off = 0; 397 398 i = 1024; 399 while (i > 0) { 400 len += snprintf(buf+len, size-len, 401 "%08x: %08x %08x %08x %08x %08x %08x %08x %08x\n", 402 off, *ptr, *(ptr+1), *(ptr+2), *(ptr+3), *(ptr+4), 403 *(ptr+5), *(ptr+6), *(ptr+7)); 404 ptr += 8; 405 i -= (8 * sizeof(uint32_t)); 406 off += (8 * sizeof(uint32_t)); 407 } 408 409 spin_unlock_irq(&phba->hbalock); 410 return len; 411 } 412 413 /** 414 * lpfc_debugfs_dumpHostSlim_data - Dump host SLIM info to a buffer 415 * @phba: The HBA to gather Host SLIM info from. 416 * @buf: The buffer to dump log into. 417 * @size: The maximum amount of data to process. 418 * 419 * Description: 420 * This routine dumps the current contents of host SLIM for the host associated 421 * with @phba to @buf up to @size bytes of data. The dump will contain the 422 * Mailbox, PCB, Rings, and Registers that are located in host memory. 423 * 424 * Return Value: 425 * This routine returns the amount of bytes that were dumped into @buf and will 426 * not exceed @size. 427 **/ 428 static int 429 lpfc_debugfs_dumpHostSlim_data(struct lpfc_hba *phba, char *buf, int size) 430 { 431 int len = 0; 432 int i, off; 433 uint32_t word0, word1, word2, word3; 434 uint32_t *ptr; 435 struct lpfc_pgp *pgpp; 436 struct lpfc_sli *psli = &phba->sli; 437 struct lpfc_sli_ring *pring; 438 439 off = 0; 440 spin_lock_irq(&phba->hbalock); 441 442 len += snprintf(buf+len, size-len, "SLIM Mailbox\n"); 443 ptr = (uint32_t *)phba->slim2p.virt; 444 i = sizeof(MAILBOX_t); 445 while (i > 0) { 446 len += snprintf(buf+len, size-len, 447 "%08x: %08x %08x %08x %08x %08x %08x %08x %08x\n", 448 off, *ptr, *(ptr+1), *(ptr+2), *(ptr+3), *(ptr+4), 449 *(ptr+5), *(ptr+6), *(ptr+7)); 450 ptr += 8; 451 i -= (8 * sizeof(uint32_t)); 452 off += (8 * sizeof(uint32_t)); 453 } 454 455 len += snprintf(buf+len, size-len, "SLIM PCB\n"); 456 ptr = (uint32_t *)phba->pcb; 457 i = sizeof(PCB_t); 458 while (i > 0) { 459 len += snprintf(buf+len, size-len, 460 "%08x: %08x %08x %08x %08x %08x %08x %08x %08x\n", 461 off, *ptr, *(ptr+1), *(ptr+2), *(ptr+3), *(ptr+4), 462 *(ptr+5), *(ptr+6), *(ptr+7)); 463 ptr += 8; 464 i -= (8 * sizeof(uint32_t)); 465 off += (8 * sizeof(uint32_t)); 466 } 467 468 for (i = 0; i < 4; i++) { 469 pgpp = &phba->port_gp[i]; 470 pring = &psli->ring[i]; 471 len += snprintf(buf+len, size-len, 472 "Ring %d: CMD GetInx:%d (Max:%d Next:%d " 473 "Local:%d flg:x%x) RSP PutInx:%d Max:%d\n", 474 i, pgpp->cmdGetInx, pring->numCiocb, 475 pring->next_cmdidx, pring->local_getidx, 476 pring->flag, pgpp->rspPutInx, pring->numRiocb); 477 } 478 479 if (phba->sli_rev <= LPFC_SLI_REV3) { 480 word0 = readl(phba->HAregaddr); 481 word1 = readl(phba->CAregaddr); 482 word2 = readl(phba->HSregaddr); 483 word3 = readl(phba->HCregaddr); 484 len += snprintf(buf+len, size-len, "HA:%08x CA:%08x HS:%08x " 485 "HC:%08x\n", word0, word1, word2, word3); 486 } 487 spin_unlock_irq(&phba->hbalock); 488 return len; 489 } 490 491 /** 492 * lpfc_debugfs_nodelist_data - Dump target node list to a buffer 493 * @vport: The vport to gather target node info from. 494 * @buf: The buffer to dump log into. 495 * @size: The maximum amount of data to process. 496 * 497 * Description: 498 * This routine dumps the current target node list associated with @vport to 499 * @buf up to @size bytes of data. Each node entry in the dump will contain a 500 * node state, DID, WWPN, WWNN, RPI, flags, type, and other useful fields. 501 * 502 * Return Value: 503 * This routine returns the amount of bytes that were dumped into @buf and will 504 * not exceed @size. 505 **/ 506 static int 507 lpfc_debugfs_nodelist_data(struct lpfc_vport *vport, char *buf, int size) 508 { 509 int len = 0; 510 int cnt; 511 struct Scsi_Host *shost = lpfc_shost_from_vport(vport); 512 struct lpfc_nodelist *ndlp; 513 unsigned char *statep, *name; 514 515 cnt = (LPFC_NODELIST_SIZE / LPFC_NODELIST_ENTRY_SIZE); 516 517 spin_lock_irq(shost->host_lock); 518 list_for_each_entry(ndlp, &vport->fc_nodes, nlp_listp) { 519 if (!cnt) { 520 len += snprintf(buf+len, size-len, 521 "Missing Nodelist Entries\n"); 522 break; 523 } 524 cnt--; 525 switch (ndlp->nlp_state) { 526 case NLP_STE_UNUSED_NODE: 527 statep = "UNUSED"; 528 break; 529 case NLP_STE_PLOGI_ISSUE: 530 statep = "PLOGI "; 531 break; 532 case NLP_STE_ADISC_ISSUE: 533 statep = "ADISC "; 534 break; 535 case NLP_STE_REG_LOGIN_ISSUE: 536 statep = "REGLOG"; 537 break; 538 case NLP_STE_PRLI_ISSUE: 539 statep = "PRLI "; 540 break; 541 case NLP_STE_UNMAPPED_NODE: 542 statep = "UNMAP "; 543 break; 544 case NLP_STE_MAPPED_NODE: 545 statep = "MAPPED"; 546 break; 547 case NLP_STE_NPR_NODE: 548 statep = "NPR "; 549 break; 550 default: 551 statep = "UNKNOWN"; 552 } 553 len += snprintf(buf+len, size-len, "%s DID:x%06x ", 554 statep, ndlp->nlp_DID); 555 name = (unsigned char *)&ndlp->nlp_portname; 556 len += snprintf(buf+len, size-len, 557 "WWPN %02x:%02x:%02x:%02x:%02x:%02x:%02x:%02x ", 558 *name, *(name+1), *(name+2), *(name+3), 559 *(name+4), *(name+5), *(name+6), *(name+7)); 560 name = (unsigned char *)&ndlp->nlp_nodename; 561 len += snprintf(buf+len, size-len, 562 "WWNN %02x:%02x:%02x:%02x:%02x:%02x:%02x:%02x ", 563 *name, *(name+1), *(name+2), *(name+3), 564 *(name+4), *(name+5), *(name+6), *(name+7)); 565 len += snprintf(buf+len, size-len, "RPI:%03d flag:x%08x ", 566 ndlp->nlp_rpi, ndlp->nlp_flag); 567 if (!ndlp->nlp_type) 568 len += snprintf(buf+len, size-len, "UNKNOWN_TYPE "); 569 if (ndlp->nlp_type & NLP_FC_NODE) 570 len += snprintf(buf+len, size-len, "FC_NODE "); 571 if (ndlp->nlp_type & NLP_FABRIC) 572 len += snprintf(buf+len, size-len, "FABRIC "); 573 if (ndlp->nlp_type & NLP_FCP_TARGET) 574 len += snprintf(buf+len, size-len, "FCP_TGT sid:%d ", 575 ndlp->nlp_sid); 576 if (ndlp->nlp_type & NLP_FCP_INITIATOR) 577 len += snprintf(buf+len, size-len, "FCP_INITIATOR "); 578 len += snprintf(buf+len, size-len, "usgmap:%x ", 579 ndlp->nlp_usg_map); 580 len += snprintf(buf+len, size-len, "refcnt:%x", 581 atomic_read(&ndlp->kref.refcount)); 582 len += snprintf(buf+len, size-len, "\n"); 583 } 584 spin_unlock_irq(shost->host_lock); 585 return len; 586 } 587 #endif 588 589 /** 590 * lpfc_debugfs_disc_trc - Store discovery trace log 591 * @vport: The vport to associate this trace string with for retrieval. 592 * @mask: Log entry classification. 593 * @fmt: Format string to be displayed when dumping the log. 594 * @data1: 1st data parameter to be applied to @fmt. 595 * @data2: 2nd data parameter to be applied to @fmt. 596 * @data3: 3rd data parameter to be applied to @fmt. 597 * 598 * Description: 599 * This routine is used by the driver code to add a debugfs log entry to the 600 * discovery trace buffer associated with @vport. Only entries with a @mask that 601 * match the current debugfs discovery mask will be saved. Entries that do not 602 * match will be thrown away. @fmt, @data1, @data2, and @data3 are used like 603 * printf when displaying the log. 604 **/ 605 inline void 606 lpfc_debugfs_disc_trc(struct lpfc_vport *vport, int mask, char *fmt, 607 uint32_t data1, uint32_t data2, uint32_t data3) 608 { 609 #ifdef CONFIG_SCSI_LPFC_DEBUG_FS 610 struct lpfc_debugfs_trc *dtp; 611 int index; 612 613 if (!(lpfc_debugfs_mask_disc_trc & mask)) 614 return; 615 616 if (!lpfc_debugfs_enable || !lpfc_debugfs_max_disc_trc || 617 !vport || !vport->disc_trc) 618 return; 619 620 index = atomic_inc_return(&vport->disc_trc_cnt) & 621 (lpfc_debugfs_max_disc_trc - 1); 622 dtp = vport->disc_trc + index; 623 dtp->fmt = fmt; 624 dtp->data1 = data1; 625 dtp->data2 = data2; 626 dtp->data3 = data3; 627 dtp->seq_cnt = atomic_inc_return(&lpfc_debugfs_seq_trc_cnt); 628 dtp->jif = jiffies; 629 #endif 630 return; 631 } 632 633 /** 634 * lpfc_debugfs_slow_ring_trc - Store slow ring trace log 635 * @phba: The phba to associate this trace string with for retrieval. 636 * @fmt: Format string to be displayed when dumping the log. 637 * @data1: 1st data parameter to be applied to @fmt. 638 * @data2: 2nd data parameter to be applied to @fmt. 639 * @data3: 3rd data parameter to be applied to @fmt. 640 * 641 * Description: 642 * This routine is used by the driver code to add a debugfs log entry to the 643 * discovery trace buffer associated with @vport. @fmt, @data1, @data2, and 644 * @data3 are used like printf when displaying the log. 645 **/ 646 inline void 647 lpfc_debugfs_slow_ring_trc(struct lpfc_hba *phba, char *fmt, 648 uint32_t data1, uint32_t data2, uint32_t data3) 649 { 650 #ifdef CONFIG_SCSI_LPFC_DEBUG_FS 651 struct lpfc_debugfs_trc *dtp; 652 int index; 653 654 if (!lpfc_debugfs_enable || !lpfc_debugfs_max_slow_ring_trc || 655 !phba || !phba->slow_ring_trc) 656 return; 657 658 index = atomic_inc_return(&phba->slow_ring_trc_cnt) & 659 (lpfc_debugfs_max_slow_ring_trc - 1); 660 dtp = phba->slow_ring_trc + index; 661 dtp->fmt = fmt; 662 dtp->data1 = data1; 663 dtp->data2 = data2; 664 dtp->data3 = data3; 665 dtp->seq_cnt = atomic_inc_return(&lpfc_debugfs_seq_trc_cnt); 666 dtp->jif = jiffies; 667 #endif 668 return; 669 } 670 671 #ifdef CONFIG_SCSI_LPFC_DEBUG_FS 672 /** 673 * lpfc_debugfs_disc_trc_open - Open the discovery trace log 674 * @inode: The inode pointer that contains a vport pointer. 675 * @file: The file pointer to attach the log output. 676 * 677 * Description: 678 * This routine is the entry point for the debugfs open file operation. It gets 679 * the vport from the i_private field in @inode, allocates the necessary buffer 680 * for the log, fills the buffer from the in-memory log for this vport, and then 681 * returns a pointer to that log in the private_data field in @file. 682 * 683 * Returns: 684 * This function returns zero if successful. On error it will return an negative 685 * error value. 686 **/ 687 static int 688 lpfc_debugfs_disc_trc_open(struct inode *inode, struct file *file) 689 { 690 struct lpfc_vport *vport = inode->i_private; 691 struct lpfc_debug *debug; 692 int size; 693 int rc = -ENOMEM; 694 695 if (!lpfc_debugfs_max_disc_trc) { 696 rc = -ENOSPC; 697 goto out; 698 } 699 700 debug = kmalloc(sizeof(*debug), GFP_KERNEL); 701 if (!debug) 702 goto out; 703 704 /* Round to page boundary */ 705 size = (lpfc_debugfs_max_disc_trc * LPFC_DEBUG_TRC_ENTRY_SIZE); 706 size = PAGE_ALIGN(size); 707 708 debug->buffer = kmalloc(size, GFP_KERNEL); 709 if (!debug->buffer) { 710 kfree(debug); 711 goto out; 712 } 713 714 debug->len = lpfc_debugfs_disc_trc_data(vport, debug->buffer, size); 715 file->private_data = debug; 716 717 rc = 0; 718 out: 719 return rc; 720 } 721 722 /** 723 * lpfc_debugfs_slow_ring_trc_open - Open the Slow Ring trace log 724 * @inode: The inode pointer that contains a vport pointer. 725 * @file: The file pointer to attach the log output. 726 * 727 * Description: 728 * This routine is the entry point for the debugfs open file operation. It gets 729 * the vport from the i_private field in @inode, allocates the necessary buffer 730 * for the log, fills the buffer from the in-memory log for this vport, and then 731 * returns a pointer to that log in the private_data field in @file. 732 * 733 * Returns: 734 * This function returns zero if successful. On error it will return an negative 735 * error value. 736 **/ 737 static int 738 lpfc_debugfs_slow_ring_trc_open(struct inode *inode, struct file *file) 739 { 740 struct lpfc_hba *phba = inode->i_private; 741 struct lpfc_debug *debug; 742 int size; 743 int rc = -ENOMEM; 744 745 if (!lpfc_debugfs_max_slow_ring_trc) { 746 rc = -ENOSPC; 747 goto out; 748 } 749 750 debug = kmalloc(sizeof(*debug), GFP_KERNEL); 751 if (!debug) 752 goto out; 753 754 /* Round to page boundary */ 755 size = (lpfc_debugfs_max_slow_ring_trc * LPFC_DEBUG_TRC_ENTRY_SIZE); 756 size = PAGE_ALIGN(size); 757 758 debug->buffer = kmalloc(size, GFP_KERNEL); 759 if (!debug->buffer) { 760 kfree(debug); 761 goto out; 762 } 763 764 debug->len = lpfc_debugfs_slow_ring_trc_data(phba, debug->buffer, size); 765 file->private_data = debug; 766 767 rc = 0; 768 out: 769 return rc; 770 } 771 772 /** 773 * lpfc_debugfs_hbqinfo_open - Open the hbqinfo debugfs buffer 774 * @inode: The inode pointer that contains a vport pointer. 775 * @file: The file pointer to attach the log output. 776 * 777 * Description: 778 * This routine is the entry point for the debugfs open file operation. It gets 779 * the vport from the i_private field in @inode, allocates the necessary buffer 780 * for the log, fills the buffer from the in-memory log for this vport, and then 781 * returns a pointer to that log in the private_data field in @file. 782 * 783 * Returns: 784 * This function returns zero if successful. On error it will return an negative 785 * error value. 786 **/ 787 static int 788 lpfc_debugfs_hbqinfo_open(struct inode *inode, struct file *file) 789 { 790 struct lpfc_hba *phba = inode->i_private; 791 struct lpfc_debug *debug; 792 int rc = -ENOMEM; 793 794 debug = kmalloc(sizeof(*debug), GFP_KERNEL); 795 if (!debug) 796 goto out; 797 798 /* Round to page boundary */ 799 debug->buffer = kmalloc(LPFC_HBQINFO_SIZE, GFP_KERNEL); 800 if (!debug->buffer) { 801 kfree(debug); 802 goto out; 803 } 804 805 debug->len = lpfc_debugfs_hbqinfo_data(phba, debug->buffer, 806 LPFC_HBQINFO_SIZE); 807 file->private_data = debug; 808 809 rc = 0; 810 out: 811 return rc; 812 } 813 814 /** 815 * lpfc_debugfs_dumpHBASlim_open - Open the Dump HBA SLIM debugfs buffer 816 * @inode: The inode pointer that contains a vport pointer. 817 * @file: The file pointer to attach the log output. 818 * 819 * Description: 820 * This routine is the entry point for the debugfs open file operation. It gets 821 * the vport from the i_private field in @inode, allocates the necessary buffer 822 * for the log, fills the buffer from the in-memory log for this vport, and then 823 * returns a pointer to that log in the private_data field in @file. 824 * 825 * Returns: 826 * This function returns zero if successful. On error it will return an negative 827 * error value. 828 **/ 829 static int 830 lpfc_debugfs_dumpHBASlim_open(struct inode *inode, struct file *file) 831 { 832 struct lpfc_hba *phba = inode->i_private; 833 struct lpfc_debug *debug; 834 int rc = -ENOMEM; 835 836 debug = kmalloc(sizeof(*debug), GFP_KERNEL); 837 if (!debug) 838 goto out; 839 840 /* Round to page boundary */ 841 debug->buffer = kmalloc(LPFC_DUMPHBASLIM_SIZE, GFP_KERNEL); 842 if (!debug->buffer) { 843 kfree(debug); 844 goto out; 845 } 846 847 debug->len = lpfc_debugfs_dumpHBASlim_data(phba, debug->buffer, 848 LPFC_DUMPHBASLIM_SIZE); 849 file->private_data = debug; 850 851 rc = 0; 852 out: 853 return rc; 854 } 855 856 /** 857 * lpfc_debugfs_dumpHostSlim_open - Open the Dump Host SLIM debugfs buffer 858 * @inode: The inode pointer that contains a vport pointer. 859 * @file: The file pointer to attach the log output. 860 * 861 * Description: 862 * This routine is the entry point for the debugfs open file operation. It gets 863 * the vport from the i_private field in @inode, allocates the necessary buffer 864 * for the log, fills the buffer from the in-memory log for this vport, and then 865 * returns a pointer to that log in the private_data field in @file. 866 * 867 * Returns: 868 * This function returns zero if successful. On error it will return an negative 869 * error value. 870 **/ 871 static int 872 lpfc_debugfs_dumpHostSlim_open(struct inode *inode, struct file *file) 873 { 874 struct lpfc_hba *phba = inode->i_private; 875 struct lpfc_debug *debug; 876 int rc = -ENOMEM; 877 878 debug = kmalloc(sizeof(*debug), GFP_KERNEL); 879 if (!debug) 880 goto out; 881 882 /* Round to page boundary */ 883 debug->buffer = kmalloc(LPFC_DUMPHOSTSLIM_SIZE, GFP_KERNEL); 884 if (!debug->buffer) { 885 kfree(debug); 886 goto out; 887 } 888 889 debug->len = lpfc_debugfs_dumpHostSlim_data(phba, debug->buffer, 890 LPFC_DUMPHOSTSLIM_SIZE); 891 file->private_data = debug; 892 893 rc = 0; 894 out: 895 return rc; 896 } 897 898 static int 899 lpfc_debugfs_dumpData_open(struct inode *inode, struct file *file) 900 { 901 struct lpfc_debug *debug; 902 int rc = -ENOMEM; 903 904 if (!_dump_buf_data) 905 return -EBUSY; 906 907 debug = kmalloc(sizeof(*debug), GFP_KERNEL); 908 if (!debug) 909 goto out; 910 911 /* Round to page boundry */ 912 printk(KERN_ERR "9059 BLKGRD: %s: _dump_buf_data=0x%p\n", 913 __func__, _dump_buf_data); 914 debug->buffer = _dump_buf_data; 915 if (!debug->buffer) { 916 kfree(debug); 917 goto out; 918 } 919 920 debug->len = (1 << _dump_buf_data_order) << PAGE_SHIFT; 921 file->private_data = debug; 922 923 rc = 0; 924 out: 925 return rc; 926 } 927 928 static int 929 lpfc_debugfs_dumpDif_open(struct inode *inode, struct file *file) 930 { 931 struct lpfc_debug *debug; 932 int rc = -ENOMEM; 933 934 if (!_dump_buf_dif) 935 return -EBUSY; 936 937 debug = kmalloc(sizeof(*debug), GFP_KERNEL); 938 if (!debug) 939 goto out; 940 941 /* Round to page boundry */ 942 printk(KERN_ERR "9060 BLKGRD: %s: _dump_buf_dif=0x%p file=%s\n", 943 __func__, _dump_buf_dif, file->f_dentry->d_name.name); 944 debug->buffer = _dump_buf_dif; 945 if (!debug->buffer) { 946 kfree(debug); 947 goto out; 948 } 949 950 debug->len = (1 << _dump_buf_dif_order) << PAGE_SHIFT; 951 file->private_data = debug; 952 953 rc = 0; 954 out: 955 return rc; 956 } 957 958 static ssize_t 959 lpfc_debugfs_dumpDataDif_write(struct file *file, const char __user *buf, 960 size_t nbytes, loff_t *ppos) 961 { 962 /* 963 * The Data/DIF buffers only save one failing IO 964 * The write op is used as a reset mechanism after an IO has 965 * already been saved to the next one can be saved 966 */ 967 spin_lock(&_dump_buf_lock); 968 969 memset((void *)_dump_buf_data, 0, 970 ((1 << PAGE_SHIFT) << _dump_buf_data_order)); 971 memset((void *)_dump_buf_dif, 0, 972 ((1 << PAGE_SHIFT) << _dump_buf_dif_order)); 973 974 _dump_buf_done = 0; 975 976 spin_unlock(&_dump_buf_lock); 977 978 return nbytes; 979 } 980 981 /** 982 * lpfc_debugfs_nodelist_open - Open the nodelist debugfs file 983 * @inode: The inode pointer that contains a vport pointer. 984 * @file: The file pointer to attach the log output. 985 * 986 * Description: 987 * This routine is the entry point for the debugfs open file operation. It gets 988 * the vport from the i_private field in @inode, allocates the necessary buffer 989 * for the log, fills the buffer from the in-memory log for this vport, and then 990 * returns a pointer to that log in the private_data field in @file. 991 * 992 * Returns: 993 * This function returns zero if successful. On error it will return an negative 994 * error value. 995 **/ 996 static int 997 lpfc_debugfs_nodelist_open(struct inode *inode, struct file *file) 998 { 999 struct lpfc_vport *vport = inode->i_private; 1000 struct lpfc_debug *debug; 1001 int rc = -ENOMEM; 1002 1003 debug = kmalloc(sizeof(*debug), GFP_KERNEL); 1004 if (!debug) 1005 goto out; 1006 1007 /* Round to page boundary */ 1008 debug->buffer = kmalloc(LPFC_NODELIST_SIZE, GFP_KERNEL); 1009 if (!debug->buffer) { 1010 kfree(debug); 1011 goto out; 1012 } 1013 1014 debug->len = lpfc_debugfs_nodelist_data(vport, debug->buffer, 1015 LPFC_NODELIST_SIZE); 1016 file->private_data = debug; 1017 1018 rc = 0; 1019 out: 1020 return rc; 1021 } 1022 1023 /** 1024 * lpfc_debugfs_lseek - Seek through a debugfs file 1025 * @file: The file pointer to seek through. 1026 * @off: The offset to seek to or the amount to seek by. 1027 * @whence: Indicates how to seek. 1028 * 1029 * Description: 1030 * This routine is the entry point for the debugfs lseek file operation. The 1031 * @whence parameter indicates whether @off is the offset to directly seek to, 1032 * or if it is a value to seek forward or reverse by. This function figures out 1033 * what the new offset of the debugfs file will be and assigns that value to the 1034 * f_pos field of @file. 1035 * 1036 * Returns: 1037 * This function returns the new offset if successful and returns a negative 1038 * error if unable to process the seek. 1039 **/ 1040 static loff_t 1041 lpfc_debugfs_lseek(struct file *file, loff_t off, int whence) 1042 { 1043 struct lpfc_debug *debug; 1044 loff_t pos = -1; 1045 1046 debug = file->private_data; 1047 1048 switch (whence) { 1049 case 0: 1050 pos = off; 1051 break; 1052 case 1: 1053 pos = file->f_pos + off; 1054 break; 1055 case 2: 1056 pos = debug->len - off; 1057 } 1058 return (pos < 0 || pos > debug->len) ? -EINVAL : (file->f_pos = pos); 1059 } 1060 1061 /** 1062 * lpfc_debugfs_read - Read a debugfs file 1063 * @file: The file pointer to read from. 1064 * @buf: The buffer to copy the data to. 1065 * @nbytes: The number of bytes to read. 1066 * @ppos: The position in the file to start reading from. 1067 * 1068 * Description: 1069 * This routine reads data from from the buffer indicated in the private_data 1070 * field of @file. It will start reading at @ppos and copy up to @nbytes of 1071 * data to @buf. 1072 * 1073 * Returns: 1074 * This function returns the amount of data that was read (this could be less 1075 * than @nbytes if the end of the file was reached) or a negative error value. 1076 **/ 1077 static ssize_t 1078 lpfc_debugfs_read(struct file *file, char __user *buf, 1079 size_t nbytes, loff_t *ppos) 1080 { 1081 struct lpfc_debug *debug = file->private_data; 1082 1083 return simple_read_from_buffer(buf, nbytes, ppos, debug->buffer, 1084 debug->len); 1085 } 1086 1087 /** 1088 * lpfc_debugfs_release - Release the buffer used to store debugfs file data 1089 * @inode: The inode pointer that contains a vport pointer. (unused) 1090 * @file: The file pointer that contains the buffer to release. 1091 * 1092 * Description: 1093 * This routine frees the buffer that was allocated when the debugfs file was 1094 * opened. 1095 * 1096 * Returns: 1097 * This function returns zero. 1098 **/ 1099 static int 1100 lpfc_debugfs_release(struct inode *inode, struct file *file) 1101 { 1102 struct lpfc_debug *debug = file->private_data; 1103 1104 kfree(debug->buffer); 1105 kfree(debug); 1106 1107 return 0; 1108 } 1109 1110 static int 1111 lpfc_debugfs_dumpDataDif_release(struct inode *inode, struct file *file) 1112 { 1113 struct lpfc_debug *debug = file->private_data; 1114 1115 debug->buffer = NULL; 1116 kfree(debug); 1117 1118 return 0; 1119 } 1120 1121 /* 1122 * iDiag debugfs file access methods 1123 */ 1124 1125 /* 1126 * iDiag PCI config space register access methods: 1127 * 1128 * The PCI config space register accessees of read, write, read-modify-write 1129 * for set bits, and read-modify-write for clear bits to SLI4 PCI functions 1130 * are provided. In the proper SLI4 PCI function's debugfs iDiag directory, 1131 * 1132 * /sys/kernel/debug/lpfc/fn<#>/iDiag 1133 * 1134 * the access is through the debugfs entry pciCfg: 1135 * 1136 * 1. For PCI config space register read access, there are two read methods: 1137 * A) read a single PCI config space register in the size of a byte 1138 * (8 bits), a word (16 bits), or a dword (32 bits); or B) browse through 1139 * the 4K extended PCI config space. 1140 * 1141 * A) Read a single PCI config space register consists of two steps: 1142 * 1143 * Step-1: Set up PCI config space register read command, the command 1144 * syntax is, 1145 * 1146 * echo 1 <where> <count> > pciCfg 1147 * 1148 * where, 1 is the iDiag command for PCI config space read, <where> is the 1149 * offset from the beginning of the device's PCI config space to read from, 1150 * and <count> is the size of PCI config space register data to read back, 1151 * it will be 1 for reading a byte (8 bits), 2 for reading a word (16 bits 1152 * or 2 bytes), or 4 for reading a dword (32 bits or 4 bytes). 1153 * 1154 * Setp-2: Perform the debugfs read operation to execute the idiag command 1155 * set up in Step-1, 1156 * 1157 * cat pciCfg 1158 * 1159 * Examples: 1160 * To read PCI device's vendor-id and device-id from PCI config space, 1161 * 1162 * echo 1 0 4 > pciCfg 1163 * cat pciCfg 1164 * 1165 * To read PCI device's currnt command from config space, 1166 * 1167 * echo 1 4 2 > pciCfg 1168 * cat pciCfg 1169 * 1170 * B) Browse through the entire 4K extended PCI config space also consists 1171 * of two steps: 1172 * 1173 * Step-1: Set up PCI config space register browsing command, the command 1174 * syntax is, 1175 * 1176 * echo 1 0 4096 > pciCfg 1177 * 1178 * where, 1 is the iDiag command for PCI config space read, 0 must be used 1179 * as the offset for PCI config space register browse, and 4096 must be 1180 * used as the count for PCI config space register browse. 1181 * 1182 * Step-2: Repeately issue the debugfs read operation to browse through 1183 * the entire PCI config space registers: 1184 * 1185 * cat pciCfg 1186 * cat pciCfg 1187 * cat pciCfg 1188 * ... 1189 * 1190 * When browsing to the end of the 4K PCI config space, the browse method 1191 * shall wrap around to start reading from beginning again, and again... 1192 * 1193 * 2. For PCI config space register write access, it supports a single PCI 1194 * config space register write in the size of a byte (8 bits), a word 1195 * (16 bits), or a dword (32 bits). The command syntax is, 1196 * 1197 * echo 2 <where> <count> <value> > pciCfg 1198 * 1199 * where, 2 is the iDiag command for PCI config space write, <where> is 1200 * the offset from the beginning of the device's PCI config space to write 1201 * into, <count> is the size of data to write into the PCI config space, 1202 * it will be 1 for writing a byte (8 bits), 2 for writing a word (16 bits 1203 * or 2 bytes), or 4 for writing a dword (32 bits or 4 bytes), and <value> 1204 * is the data to be written into the PCI config space register at the 1205 * offset. 1206 * 1207 * Examples: 1208 * To disable PCI device's interrupt assertion, 1209 * 1210 * 1) Read in device's PCI config space register command field <cmd>: 1211 * 1212 * echo 1 4 2 > pciCfg 1213 * cat pciCfg 1214 * 1215 * 2) Set bit 10 (Interrupt Disable bit) in the <cmd>: 1216 * 1217 * <cmd> = <cmd> | (1 < 10) 1218 * 1219 * 3) Write the modified command back: 1220 * 1221 * echo 2 4 2 <cmd> > pciCfg 1222 * 1223 * 3. For PCI config space register set bits access, it supports a single PCI 1224 * config space register set bits in the size of a byte (8 bits), a word 1225 * (16 bits), or a dword (32 bits). The command syntax is, 1226 * 1227 * echo 3 <where> <count> <bitmask> > pciCfg 1228 * 1229 * where, 3 is the iDiag command for PCI config space set bits, <where> is 1230 * the offset from the beginning of the device's PCI config space to set 1231 * bits into, <count> is the size of the bitmask to set into the PCI config 1232 * space, it will be 1 for setting a byte (8 bits), 2 for setting a word 1233 * (16 bits or 2 bytes), or 4 for setting a dword (32 bits or 4 bytes), and 1234 * <bitmask> is the bitmask, indicating the bits to be set into the PCI 1235 * config space register at the offset. The logic performed to the content 1236 * of the PCI config space register, regval, is, 1237 * 1238 * regval |= <bitmask> 1239 * 1240 * 4. For PCI config space register clear bits access, it supports a single 1241 * PCI config space register clear bits in the size of a byte (8 bits), 1242 * a word (16 bits), or a dword (32 bits). The command syntax is, 1243 * 1244 * echo 4 <where> <count> <bitmask> > pciCfg 1245 * 1246 * where, 4 is the iDiag command for PCI config space clear bits, <where> 1247 * is the offset from the beginning of the device's PCI config space to 1248 * clear bits from, <count> is the size of the bitmask to set into the PCI 1249 * config space, it will be 1 for setting a byte (8 bits), 2 for setting 1250 * a word(16 bits or 2 bytes), or 4 for setting a dword (32 bits or 4 1251 * bytes), and <bitmask> is the bitmask, indicating the bits to be cleared 1252 * from the PCI config space register at the offset. the logic performed 1253 * to the content of the PCI config space register, regval, is, 1254 * 1255 * regval &= ~<bitmask> 1256 * 1257 * Note, for all single register read, write, set bits, or clear bits access, 1258 * the offset (<where>) must be aligned with the size of the data: 1259 * 1260 * For data size of byte (8 bits), the offset must be aligned to the byte 1261 * boundary; for data size of word (16 bits), the offset must be aligned 1262 * to the word boundary; while for data size of dword (32 bits), the offset 1263 * must be aligned to the dword boundary. Otherwise, the interface will 1264 * return the error: 1265 * 1266 * "-bash: echo: write error: Invalid argument". 1267 * 1268 * For example: 1269 * 1270 * echo 1 2 4 > pciCfg 1271 * -bash: echo: write error: Invalid argument 1272 * 1273 * Note also, all of the numbers in the command fields for all read, write, 1274 * set bits, and clear bits PCI config space register command fields can be 1275 * either decimal or hex. 1276 * 1277 * For example, 1278 * echo 1 0 4096 > pciCfg 1279 * 1280 * will be the same as 1281 * echo 1 0 0x1000 > pciCfg 1282 * 1283 * And, 1284 * echo 2 155 1 10 > pciCfg 1285 * 1286 * will be 1287 * echo 2 0x9b 1 0xa > pciCfg 1288 */ 1289 1290 /** 1291 * lpfc_idiag_cmd_get - Get and parse idiag debugfs comands from user space 1292 * @buf: The pointer to the user space buffer. 1293 * @nbytes: The number of bytes in the user space buffer. 1294 * @idiag_cmd: pointer to the idiag command struct. 1295 * 1296 * This routine reads data from debugfs user space buffer and parses the 1297 * buffer for getting the idiag command and arguments. The while space in 1298 * between the set of data is used as the parsing separator. 1299 * 1300 * This routine returns 0 when successful, it returns proper error code 1301 * back to the user space in error conditions. 1302 */ 1303 static int lpfc_idiag_cmd_get(const char __user *buf, size_t nbytes, 1304 struct lpfc_idiag_cmd *idiag_cmd) 1305 { 1306 char mybuf[64]; 1307 char *pbuf, *step_str; 1308 int bsize, i; 1309 1310 /* Protect copy from user */ 1311 if (!access_ok(VERIFY_READ, buf, nbytes)) 1312 return -EFAULT; 1313 1314 memset(mybuf, 0, sizeof(mybuf)); 1315 memset(idiag_cmd, 0, sizeof(*idiag_cmd)); 1316 bsize = min(nbytes, (sizeof(mybuf)-1)); 1317 1318 if (copy_from_user(mybuf, buf, bsize)) 1319 return -EFAULT; 1320 pbuf = &mybuf[0]; 1321 step_str = strsep(&pbuf, "\t "); 1322 1323 /* The opcode must present */ 1324 if (!step_str) 1325 return -EINVAL; 1326 1327 idiag_cmd->opcode = simple_strtol(step_str, NULL, 0); 1328 if (idiag_cmd->opcode == 0) 1329 return -EINVAL; 1330 1331 for (i = 0; i < LPFC_IDIAG_CMD_DATA_SIZE; i++) { 1332 step_str = strsep(&pbuf, "\t "); 1333 if (!step_str) 1334 return 0; 1335 idiag_cmd->data[i] = simple_strtol(step_str, NULL, 0); 1336 } 1337 return 0; 1338 } 1339 1340 /** 1341 * lpfc_idiag_open - idiag open debugfs 1342 * @inode: The inode pointer that contains a pointer to phba. 1343 * @file: The file pointer to attach the file operation. 1344 * 1345 * Description: 1346 * This routine is the entry point for the debugfs open file operation. It 1347 * gets the reference to phba from the i_private field in @inode, it then 1348 * allocates buffer for the file operation, performs the necessary PCI config 1349 * space read into the allocated buffer according to the idiag user command 1350 * setup, and then returns a pointer to buffer in the private_data field in 1351 * @file. 1352 * 1353 * Returns: 1354 * This function returns zero if successful. On error it will return an 1355 * negative error value. 1356 **/ 1357 static int 1358 lpfc_idiag_open(struct inode *inode, struct file *file) 1359 { 1360 struct lpfc_debug *debug; 1361 1362 debug = kmalloc(sizeof(*debug), GFP_KERNEL); 1363 if (!debug) 1364 return -ENOMEM; 1365 1366 debug->i_private = inode->i_private; 1367 debug->buffer = NULL; 1368 file->private_data = debug; 1369 1370 return 0; 1371 } 1372 1373 /** 1374 * lpfc_idiag_release - Release idiag access file operation 1375 * @inode: The inode pointer that contains a vport pointer. (unused) 1376 * @file: The file pointer that contains the buffer to release. 1377 * 1378 * Description: 1379 * This routine is the generic release routine for the idiag access file 1380 * operation, it frees the buffer that was allocated when the debugfs file 1381 * was opened. 1382 * 1383 * Returns: 1384 * This function returns zero. 1385 **/ 1386 static int 1387 lpfc_idiag_release(struct inode *inode, struct file *file) 1388 { 1389 struct lpfc_debug *debug = file->private_data; 1390 1391 /* Free the buffers to the file operation */ 1392 kfree(debug->buffer); 1393 kfree(debug); 1394 1395 return 0; 1396 } 1397 1398 /** 1399 * lpfc_idiag_cmd_release - Release idiag cmd access file operation 1400 * @inode: The inode pointer that contains a vport pointer. (unused) 1401 * @file: The file pointer that contains the buffer to release. 1402 * 1403 * Description: 1404 * This routine frees the buffer that was allocated when the debugfs file 1405 * was opened. It also reset the fields in the idiag command struct in the 1406 * case the command is not continuous browsing of the data structure. 1407 * 1408 * Returns: 1409 * This function returns zero. 1410 **/ 1411 static int 1412 lpfc_idiag_cmd_release(struct inode *inode, struct file *file) 1413 { 1414 struct lpfc_debug *debug = file->private_data; 1415 1416 /* Read PCI config register, if not read all, clear command fields */ 1417 if ((debug->op == LPFC_IDIAG_OP_RD) && 1418 (idiag.cmd.opcode == LPFC_IDIAG_CMD_PCICFG_RD)) 1419 if ((idiag.cmd.data[1] == sizeof(uint8_t)) || 1420 (idiag.cmd.data[1] == sizeof(uint16_t)) || 1421 (idiag.cmd.data[1] == sizeof(uint32_t))) 1422 memset(&idiag, 0, sizeof(idiag)); 1423 1424 /* Write PCI config register, clear command fields */ 1425 if ((debug->op == LPFC_IDIAG_OP_WR) && 1426 (idiag.cmd.opcode == LPFC_IDIAG_CMD_PCICFG_WR)) 1427 memset(&idiag, 0, sizeof(idiag)); 1428 1429 /* Free the buffers to the file operation */ 1430 kfree(debug->buffer); 1431 kfree(debug); 1432 1433 return 0; 1434 } 1435 1436 /** 1437 * lpfc_idiag_pcicfg_read - idiag debugfs read pcicfg 1438 * @file: The file pointer to read from. 1439 * @buf: The buffer to copy the data to. 1440 * @nbytes: The number of bytes to read. 1441 * @ppos: The position in the file to start reading from. 1442 * 1443 * Description: 1444 * This routine reads data from the @phba pci config space according to the 1445 * idiag command, and copies to user @buf. Depending on the PCI config space 1446 * read command setup, it does either a single register read of a byte 1447 * (8 bits), a word (16 bits), or a dword (32 bits) or browsing through all 1448 * registers from the 4K extended PCI config space. 1449 * 1450 * Returns: 1451 * This function returns the amount of data that was read (this could be less 1452 * than @nbytes if the end of the file was reached) or a negative error value. 1453 **/ 1454 static ssize_t 1455 lpfc_idiag_pcicfg_read(struct file *file, char __user *buf, size_t nbytes, 1456 loff_t *ppos) 1457 { 1458 struct lpfc_debug *debug = file->private_data; 1459 struct lpfc_hba *phba = (struct lpfc_hba *)debug->i_private; 1460 int offset_label, offset, len = 0, index = LPFC_PCI_CFG_RD_SIZE; 1461 int where, count; 1462 char *pbuffer; 1463 struct pci_dev *pdev; 1464 uint32_t u32val; 1465 uint16_t u16val; 1466 uint8_t u8val; 1467 1468 pdev = phba->pcidev; 1469 if (!pdev) 1470 return 0; 1471 1472 /* This is a user read operation */ 1473 debug->op = LPFC_IDIAG_OP_RD; 1474 1475 if (!debug->buffer) 1476 debug->buffer = kmalloc(LPFC_PCI_CFG_SIZE, GFP_KERNEL); 1477 if (!debug->buffer) 1478 return 0; 1479 pbuffer = debug->buffer; 1480 1481 if (*ppos) 1482 return 0; 1483 1484 if (idiag.cmd.opcode == LPFC_IDIAG_CMD_PCICFG_RD) { 1485 where = idiag.cmd.data[0]; 1486 count = idiag.cmd.data[1]; 1487 } else 1488 return 0; 1489 1490 /* Read single PCI config space register */ 1491 switch (count) { 1492 case SIZE_U8: /* byte (8 bits) */ 1493 pci_read_config_byte(pdev, where, &u8val); 1494 len += snprintf(pbuffer+len, LPFC_PCI_CFG_SIZE-len, 1495 "%03x: %02x\n", where, u8val); 1496 break; 1497 case SIZE_U16: /* word (16 bits) */ 1498 pci_read_config_word(pdev, where, &u16val); 1499 len += snprintf(pbuffer+len, LPFC_PCI_CFG_SIZE-len, 1500 "%03x: %04x\n", where, u16val); 1501 break; 1502 case SIZE_U32: /* double word (32 bits) */ 1503 pci_read_config_dword(pdev, where, &u32val); 1504 len += snprintf(pbuffer+len, LPFC_PCI_CFG_SIZE-len, 1505 "%03x: %08x\n", where, u32val); 1506 break; 1507 case LPFC_PCI_CFG_SIZE: /* browse all */ 1508 goto pcicfg_browse; 1509 break; 1510 default: 1511 /* illegal count */ 1512 len = 0; 1513 break; 1514 } 1515 return simple_read_from_buffer(buf, nbytes, ppos, pbuffer, len); 1516 1517 pcicfg_browse: 1518 1519 /* Browse all PCI config space registers */ 1520 offset_label = idiag.offset.last_rd; 1521 offset = offset_label; 1522 1523 /* Read PCI config space */ 1524 len += snprintf(pbuffer+len, LPFC_PCI_CFG_SIZE-len, 1525 "%03x: ", offset_label); 1526 while (index > 0) { 1527 pci_read_config_dword(pdev, offset, &u32val); 1528 len += snprintf(pbuffer+len, LPFC_PCI_CFG_SIZE-len, 1529 "%08x ", u32val); 1530 offset += sizeof(uint32_t); 1531 index -= sizeof(uint32_t); 1532 if (!index) 1533 len += snprintf(pbuffer+len, LPFC_PCI_CFG_SIZE-len, 1534 "\n"); 1535 else if (!(index % (8 * sizeof(uint32_t)))) { 1536 offset_label += (8 * sizeof(uint32_t)); 1537 len += snprintf(pbuffer+len, LPFC_PCI_CFG_SIZE-len, 1538 "\n%03x: ", offset_label); 1539 } 1540 } 1541 1542 /* Set up the offset for next portion of pci cfg read */ 1543 idiag.offset.last_rd += LPFC_PCI_CFG_RD_SIZE; 1544 if (idiag.offset.last_rd >= LPFC_PCI_CFG_SIZE) 1545 idiag.offset.last_rd = 0; 1546 1547 return simple_read_from_buffer(buf, nbytes, ppos, pbuffer, len); 1548 } 1549 1550 /** 1551 * lpfc_idiag_pcicfg_write - Syntax check and set up idiag pcicfg commands 1552 * @file: The file pointer to read from. 1553 * @buf: The buffer to copy the user data from. 1554 * @nbytes: The number of bytes to get. 1555 * @ppos: The position in the file to start reading from. 1556 * 1557 * This routine get the debugfs idiag command struct from user space and 1558 * then perform the syntax check for PCI config space read or write command 1559 * accordingly. In the case of PCI config space read command, it sets up 1560 * the command in the idiag command struct for the debugfs read operation. 1561 * In the case of PCI config space write operation, it executes the write 1562 * operation into the PCI config space accordingly. 1563 * 1564 * It returns the @nbytges passing in from debugfs user space when successful. 1565 * In case of error conditions, it returns proper error code back to the user 1566 * space. 1567 */ 1568 static ssize_t 1569 lpfc_idiag_pcicfg_write(struct file *file, const char __user *buf, 1570 size_t nbytes, loff_t *ppos) 1571 { 1572 struct lpfc_debug *debug = file->private_data; 1573 struct lpfc_hba *phba = (struct lpfc_hba *)debug->i_private; 1574 uint32_t where, value, count; 1575 uint32_t u32val; 1576 uint16_t u16val; 1577 uint8_t u8val; 1578 struct pci_dev *pdev; 1579 int rc; 1580 1581 pdev = phba->pcidev; 1582 if (!pdev) 1583 return -EFAULT; 1584 1585 /* This is a user write operation */ 1586 debug->op = LPFC_IDIAG_OP_WR; 1587 1588 rc = lpfc_idiag_cmd_get(buf, nbytes, &idiag.cmd); 1589 if (rc) 1590 return rc; 1591 1592 if (idiag.cmd.opcode == LPFC_IDIAG_CMD_PCICFG_RD) { 1593 /* Read command from PCI config space, set up command fields */ 1594 where = idiag.cmd.data[0]; 1595 count = idiag.cmd.data[1]; 1596 if (count == LPFC_PCI_CFG_SIZE) { 1597 if (where != 0) 1598 goto error_out; 1599 } else if ((count != sizeof(uint8_t)) && 1600 (count != sizeof(uint16_t)) && 1601 (count != sizeof(uint32_t))) 1602 goto error_out; 1603 if (count == sizeof(uint8_t)) { 1604 if (where > LPFC_PCI_CFG_SIZE - sizeof(uint8_t)) 1605 goto error_out; 1606 if (where % sizeof(uint8_t)) 1607 goto error_out; 1608 } 1609 if (count == sizeof(uint16_t)) { 1610 if (where > LPFC_PCI_CFG_SIZE - sizeof(uint16_t)) 1611 goto error_out; 1612 if (where % sizeof(uint16_t)) 1613 goto error_out; 1614 } 1615 if (count == sizeof(uint32_t)) { 1616 if (where > LPFC_PCI_CFG_SIZE - sizeof(uint32_t)) 1617 goto error_out; 1618 if (where % sizeof(uint32_t)) 1619 goto error_out; 1620 } 1621 } else if (idiag.cmd.opcode == LPFC_IDIAG_CMD_PCICFG_WR || 1622 idiag.cmd.opcode == LPFC_IDIAG_CMD_PCICFG_ST || 1623 idiag.cmd.opcode == LPFC_IDIAG_CMD_PCICFG_CL) { 1624 /* Write command to PCI config space, read-modify-write */ 1625 where = idiag.cmd.data[0]; 1626 count = idiag.cmd.data[1]; 1627 value = idiag.cmd.data[2]; 1628 /* Sanity checks */ 1629 if ((count != sizeof(uint8_t)) && 1630 (count != sizeof(uint16_t)) && 1631 (count != sizeof(uint32_t))) 1632 goto error_out; 1633 if (count == sizeof(uint8_t)) { 1634 if (where > LPFC_PCI_CFG_SIZE - sizeof(uint8_t)) 1635 goto error_out; 1636 if (where % sizeof(uint8_t)) 1637 goto error_out; 1638 if (idiag.cmd.opcode == LPFC_IDIAG_CMD_PCICFG_WR) 1639 pci_write_config_byte(pdev, where, 1640 (uint8_t)value); 1641 if (idiag.cmd.opcode == LPFC_IDIAG_CMD_PCICFG_ST) { 1642 rc = pci_read_config_byte(pdev, where, &u8val); 1643 if (!rc) { 1644 u8val |= (uint8_t)value; 1645 pci_write_config_byte(pdev, where, 1646 u8val); 1647 } 1648 } 1649 if (idiag.cmd.opcode == LPFC_IDIAG_CMD_PCICFG_CL) { 1650 rc = pci_read_config_byte(pdev, where, &u8val); 1651 if (!rc) { 1652 u8val &= (uint8_t)(~value); 1653 pci_write_config_byte(pdev, where, 1654 u8val); 1655 } 1656 } 1657 } 1658 if (count == sizeof(uint16_t)) { 1659 if (where > LPFC_PCI_CFG_SIZE - sizeof(uint16_t)) 1660 goto error_out; 1661 if (where % sizeof(uint16_t)) 1662 goto error_out; 1663 if (idiag.cmd.opcode == LPFC_IDIAG_CMD_PCICFG_WR) 1664 pci_write_config_word(pdev, where, 1665 (uint16_t)value); 1666 if (idiag.cmd.opcode == LPFC_IDIAG_CMD_PCICFG_ST) { 1667 rc = pci_read_config_word(pdev, where, &u16val); 1668 if (!rc) { 1669 u16val |= (uint16_t)value; 1670 pci_write_config_word(pdev, where, 1671 u16val); 1672 } 1673 } 1674 if (idiag.cmd.opcode == LPFC_IDIAG_CMD_PCICFG_CL) { 1675 rc = pci_read_config_word(pdev, where, &u16val); 1676 if (!rc) { 1677 u16val &= (uint16_t)(~value); 1678 pci_write_config_word(pdev, where, 1679 u16val); 1680 } 1681 } 1682 } 1683 if (count == sizeof(uint32_t)) { 1684 if (where > LPFC_PCI_CFG_SIZE - sizeof(uint32_t)) 1685 goto error_out; 1686 if (where % sizeof(uint32_t)) 1687 goto error_out; 1688 if (idiag.cmd.opcode == LPFC_IDIAG_CMD_PCICFG_WR) 1689 pci_write_config_dword(pdev, where, value); 1690 if (idiag.cmd.opcode == LPFC_IDIAG_CMD_PCICFG_ST) { 1691 rc = pci_read_config_dword(pdev, where, 1692 &u32val); 1693 if (!rc) { 1694 u32val |= value; 1695 pci_write_config_dword(pdev, where, 1696 u32val); 1697 } 1698 } 1699 if (idiag.cmd.opcode == LPFC_IDIAG_CMD_PCICFG_CL) { 1700 rc = pci_read_config_dword(pdev, where, 1701 &u32val); 1702 if (!rc) { 1703 u32val &= ~value; 1704 pci_write_config_dword(pdev, where, 1705 u32val); 1706 } 1707 } 1708 } 1709 } else 1710 /* All other opecodes are illegal for now */ 1711 goto error_out; 1712 1713 return nbytes; 1714 error_out: 1715 memset(&idiag, 0, sizeof(idiag)); 1716 return -EINVAL; 1717 } 1718 1719 /** 1720 * lpfc_idiag_queinfo_read - idiag debugfs read queue information 1721 * @file: The file pointer to read from. 1722 * @buf: The buffer to copy the data to. 1723 * @nbytes: The number of bytes to read. 1724 * @ppos: The position in the file to start reading from. 1725 * 1726 * Description: 1727 * This routine reads data from the @phba SLI4 PCI function queue information, 1728 * and copies to user @buf. 1729 * 1730 * Returns: 1731 * This function returns the amount of data that was read (this could be less 1732 * than @nbytes if the end of the file was reached) or a negative error value. 1733 **/ 1734 static ssize_t 1735 lpfc_idiag_queinfo_read(struct file *file, char __user *buf, size_t nbytes, 1736 loff_t *ppos) 1737 { 1738 struct lpfc_debug *debug = file->private_data; 1739 struct lpfc_hba *phba = (struct lpfc_hba *)debug->i_private; 1740 int len = 0, fcp_qidx; 1741 char *pbuffer; 1742 1743 if (!debug->buffer) 1744 debug->buffer = kmalloc(LPFC_QUE_INFO_GET_BUF_SIZE, GFP_KERNEL); 1745 if (!debug->buffer) 1746 return 0; 1747 pbuffer = debug->buffer; 1748 1749 if (*ppos) 1750 return 0; 1751 1752 /* Get slow-path event queue information */ 1753 len += snprintf(pbuffer+len, LPFC_QUE_INFO_GET_BUF_SIZE-len, 1754 "Slow-path EQ information:\n"); 1755 len += snprintf(pbuffer+len, LPFC_QUE_INFO_GET_BUF_SIZE-len, 1756 "\tID [%02d], EQE-COUNT [%04d], " 1757 "HOST-INDEX [%04x], PORT-INDEX [%04x]\n\n", 1758 phba->sli4_hba.sp_eq->queue_id, 1759 phba->sli4_hba.sp_eq->entry_count, 1760 phba->sli4_hba.sp_eq->host_index, 1761 phba->sli4_hba.sp_eq->hba_index); 1762 1763 /* Get fast-path event queue information */ 1764 len += snprintf(pbuffer+len, LPFC_QUE_INFO_GET_BUF_SIZE-len, 1765 "Fast-path EQ information:\n"); 1766 for (fcp_qidx = 0; fcp_qidx < phba->cfg_fcp_eq_count; fcp_qidx++) { 1767 len += snprintf(pbuffer+len, LPFC_QUE_INFO_GET_BUF_SIZE-len, 1768 "\tID [%02d], EQE-COUNT [%04d], " 1769 "HOST-INDEX [%04x], PORT-INDEX [%04x]\n", 1770 phba->sli4_hba.fp_eq[fcp_qidx]->queue_id, 1771 phba->sli4_hba.fp_eq[fcp_qidx]->entry_count, 1772 phba->sli4_hba.fp_eq[fcp_qidx]->host_index, 1773 phba->sli4_hba.fp_eq[fcp_qidx]->hba_index); 1774 } 1775 len += snprintf(pbuffer+len, LPFC_QUE_INFO_GET_BUF_SIZE-len, "\n"); 1776 1777 /* Get mailbox complete queue information */ 1778 len += snprintf(pbuffer+len, LPFC_QUE_INFO_GET_BUF_SIZE-len, 1779 "Mailbox CQ information:\n"); 1780 len += snprintf(pbuffer+len, LPFC_QUE_INFO_GET_BUF_SIZE-len, 1781 "\t\tAssociated EQ-ID [%02d]:\n", 1782 phba->sli4_hba.mbx_cq->assoc_qid); 1783 len += snprintf(pbuffer+len, LPFC_QUE_INFO_GET_BUF_SIZE-len, 1784 "\tID [%02d], CQE-COUNT [%04d], " 1785 "HOST-INDEX [%04x], PORT-INDEX [%04x]\n\n", 1786 phba->sli4_hba.mbx_cq->queue_id, 1787 phba->sli4_hba.mbx_cq->entry_count, 1788 phba->sli4_hba.mbx_cq->host_index, 1789 phba->sli4_hba.mbx_cq->hba_index); 1790 1791 /* Get slow-path complete queue information */ 1792 len += snprintf(pbuffer+len, LPFC_QUE_INFO_GET_BUF_SIZE-len, 1793 "Slow-path CQ information:\n"); 1794 len += snprintf(pbuffer+len, LPFC_QUE_INFO_GET_BUF_SIZE-len, 1795 "\t\tAssociated EQ-ID [%02d]:\n", 1796 phba->sli4_hba.els_cq->assoc_qid); 1797 len += snprintf(pbuffer+len, LPFC_QUE_INFO_GET_BUF_SIZE-len, 1798 "\tID [%02d], CQE-COUNT [%04d], " 1799 "HOST-INDEX [%04x], PORT-INDEX [%04x]\n\n", 1800 phba->sli4_hba.els_cq->queue_id, 1801 phba->sli4_hba.els_cq->entry_count, 1802 phba->sli4_hba.els_cq->host_index, 1803 phba->sli4_hba.els_cq->hba_index); 1804 1805 /* Get fast-path complete queue information */ 1806 len += snprintf(pbuffer+len, LPFC_QUE_INFO_GET_BUF_SIZE-len, 1807 "Fast-path CQ information:\n"); 1808 for (fcp_qidx = 0; fcp_qidx < phba->cfg_fcp_eq_count; fcp_qidx++) { 1809 len += snprintf(pbuffer+len, LPFC_QUE_INFO_GET_BUF_SIZE-len, 1810 "\t\tAssociated EQ-ID [%02d]:\n", 1811 phba->sli4_hba.fcp_cq[fcp_qidx]->assoc_qid); 1812 len += snprintf(pbuffer+len, LPFC_QUE_INFO_GET_BUF_SIZE-len, 1813 "\tID [%02d], EQE-COUNT [%04d], " 1814 "HOST-INDEX [%04x], PORT-INDEX [%04x]\n", 1815 phba->sli4_hba.fcp_cq[fcp_qidx]->queue_id, 1816 phba->sli4_hba.fcp_cq[fcp_qidx]->entry_count, 1817 phba->sli4_hba.fcp_cq[fcp_qidx]->host_index, 1818 phba->sli4_hba.fcp_cq[fcp_qidx]->hba_index); 1819 } 1820 len += snprintf(pbuffer+len, LPFC_QUE_INFO_GET_BUF_SIZE-len, "\n"); 1821 1822 /* Get mailbox queue information */ 1823 len += snprintf(pbuffer+len, LPFC_QUE_INFO_GET_BUF_SIZE-len, 1824 "Mailbox MQ information:\n"); 1825 len += snprintf(pbuffer+len, LPFC_QUE_INFO_GET_BUF_SIZE-len, 1826 "\t\tAssociated CQ-ID [%02d]:\n", 1827 phba->sli4_hba.mbx_wq->assoc_qid); 1828 len += snprintf(pbuffer+len, LPFC_QUE_INFO_GET_BUF_SIZE-len, 1829 "\tID [%02d], MQE-COUNT [%04d], " 1830 "HOST-INDEX [%04x], PORT-INDEX [%04x]\n\n", 1831 phba->sli4_hba.mbx_wq->queue_id, 1832 phba->sli4_hba.mbx_wq->entry_count, 1833 phba->sli4_hba.mbx_wq->host_index, 1834 phba->sli4_hba.mbx_wq->hba_index); 1835 1836 /* Get slow-path work queue information */ 1837 len += snprintf(pbuffer+len, LPFC_QUE_INFO_GET_BUF_SIZE-len, 1838 "Slow-path WQ information:\n"); 1839 len += snprintf(pbuffer+len, LPFC_QUE_INFO_GET_BUF_SIZE-len, 1840 "\t\tAssociated CQ-ID [%02d]:\n", 1841 phba->sli4_hba.els_wq->assoc_qid); 1842 len += snprintf(pbuffer+len, LPFC_QUE_INFO_GET_BUF_SIZE-len, 1843 "\tID [%02d], WQE-COUNT [%04d], " 1844 "HOST-INDEX [%04x], PORT-INDEX [%04x]\n\n", 1845 phba->sli4_hba.els_wq->queue_id, 1846 phba->sli4_hba.els_wq->entry_count, 1847 phba->sli4_hba.els_wq->host_index, 1848 phba->sli4_hba.els_wq->hba_index); 1849 1850 /* Get fast-path work queue information */ 1851 len += snprintf(pbuffer+len, LPFC_QUE_INFO_GET_BUF_SIZE-len, 1852 "Fast-path WQ information:\n"); 1853 for (fcp_qidx = 0; fcp_qidx < phba->cfg_fcp_wq_count; fcp_qidx++) { 1854 len += snprintf(pbuffer+len, LPFC_QUE_INFO_GET_BUF_SIZE-len, 1855 "\t\tAssociated CQ-ID [%02d]:\n", 1856 phba->sli4_hba.fcp_wq[fcp_qidx]->assoc_qid); 1857 len += snprintf(pbuffer+len, LPFC_QUE_INFO_GET_BUF_SIZE-len, 1858 "\tID [%02d], WQE-COUNT [%04d], " 1859 "HOST-INDEX [%04x], PORT-INDEX [%04x]\n", 1860 phba->sli4_hba.fcp_wq[fcp_qidx]->queue_id, 1861 phba->sli4_hba.fcp_wq[fcp_qidx]->entry_count, 1862 phba->sli4_hba.fcp_wq[fcp_qidx]->host_index, 1863 phba->sli4_hba.fcp_wq[fcp_qidx]->hba_index); 1864 } 1865 len += snprintf(pbuffer+len, LPFC_QUE_INFO_GET_BUF_SIZE-len, "\n"); 1866 1867 /* Get receive queue information */ 1868 len += snprintf(pbuffer+len, LPFC_QUE_INFO_GET_BUF_SIZE-len, 1869 "Slow-path RQ information:\n"); 1870 len += snprintf(pbuffer+len, LPFC_QUE_INFO_GET_BUF_SIZE-len, 1871 "\t\tAssociated CQ-ID [%02d]:\n", 1872 phba->sli4_hba.hdr_rq->assoc_qid); 1873 len += snprintf(pbuffer+len, LPFC_QUE_INFO_GET_BUF_SIZE-len, 1874 "\tID [%02d], RHQE-COUNT [%04d], " 1875 "HOST-INDEX [%04x], PORT-INDEX [%04x]\n", 1876 phba->sli4_hba.hdr_rq->queue_id, 1877 phba->sli4_hba.hdr_rq->entry_count, 1878 phba->sli4_hba.hdr_rq->host_index, 1879 phba->sli4_hba.hdr_rq->hba_index); 1880 len += snprintf(pbuffer+len, LPFC_QUE_INFO_GET_BUF_SIZE-len, 1881 "\tID [%02d], RDQE-COUNT [%04d], " 1882 "HOST-INDEX [%04x], PORT-INDEX [%04x]\n", 1883 phba->sli4_hba.dat_rq->queue_id, 1884 phba->sli4_hba.dat_rq->entry_count, 1885 phba->sli4_hba.dat_rq->host_index, 1886 phba->sli4_hba.dat_rq->hba_index); 1887 1888 return simple_read_from_buffer(buf, nbytes, ppos, pbuffer, len); 1889 } 1890 1891 #undef lpfc_debugfs_op_disc_trc 1892 static const struct file_operations lpfc_debugfs_op_disc_trc = { 1893 .owner = THIS_MODULE, 1894 .open = lpfc_debugfs_disc_trc_open, 1895 .llseek = lpfc_debugfs_lseek, 1896 .read = lpfc_debugfs_read, 1897 .release = lpfc_debugfs_release, 1898 }; 1899 1900 #undef lpfc_debugfs_op_nodelist 1901 static const struct file_operations lpfc_debugfs_op_nodelist = { 1902 .owner = THIS_MODULE, 1903 .open = lpfc_debugfs_nodelist_open, 1904 .llseek = lpfc_debugfs_lseek, 1905 .read = lpfc_debugfs_read, 1906 .release = lpfc_debugfs_release, 1907 }; 1908 1909 #undef lpfc_debugfs_op_hbqinfo 1910 static const struct file_operations lpfc_debugfs_op_hbqinfo = { 1911 .owner = THIS_MODULE, 1912 .open = lpfc_debugfs_hbqinfo_open, 1913 .llseek = lpfc_debugfs_lseek, 1914 .read = lpfc_debugfs_read, 1915 .release = lpfc_debugfs_release, 1916 }; 1917 1918 #undef lpfc_debugfs_op_dumpHBASlim 1919 static const struct file_operations lpfc_debugfs_op_dumpHBASlim = { 1920 .owner = THIS_MODULE, 1921 .open = lpfc_debugfs_dumpHBASlim_open, 1922 .llseek = lpfc_debugfs_lseek, 1923 .read = lpfc_debugfs_read, 1924 .release = lpfc_debugfs_release, 1925 }; 1926 1927 #undef lpfc_debugfs_op_dumpHostSlim 1928 static const struct file_operations lpfc_debugfs_op_dumpHostSlim = { 1929 .owner = THIS_MODULE, 1930 .open = lpfc_debugfs_dumpHostSlim_open, 1931 .llseek = lpfc_debugfs_lseek, 1932 .read = lpfc_debugfs_read, 1933 .release = lpfc_debugfs_release, 1934 }; 1935 1936 #undef lpfc_debugfs_op_dumpData 1937 static const struct file_operations lpfc_debugfs_op_dumpData = { 1938 .owner = THIS_MODULE, 1939 .open = lpfc_debugfs_dumpData_open, 1940 .llseek = lpfc_debugfs_lseek, 1941 .read = lpfc_debugfs_read, 1942 .write = lpfc_debugfs_dumpDataDif_write, 1943 .release = lpfc_debugfs_dumpDataDif_release, 1944 }; 1945 1946 #undef lpfc_debugfs_op_dumpDif 1947 static const struct file_operations lpfc_debugfs_op_dumpDif = { 1948 .owner = THIS_MODULE, 1949 .open = lpfc_debugfs_dumpDif_open, 1950 .llseek = lpfc_debugfs_lseek, 1951 .read = lpfc_debugfs_read, 1952 .write = lpfc_debugfs_dumpDataDif_write, 1953 .release = lpfc_debugfs_dumpDataDif_release, 1954 }; 1955 1956 #undef lpfc_debugfs_op_slow_ring_trc 1957 static const struct file_operations lpfc_debugfs_op_slow_ring_trc = { 1958 .owner = THIS_MODULE, 1959 .open = lpfc_debugfs_slow_ring_trc_open, 1960 .llseek = lpfc_debugfs_lseek, 1961 .read = lpfc_debugfs_read, 1962 .release = lpfc_debugfs_release, 1963 }; 1964 1965 static struct dentry *lpfc_debugfs_root = NULL; 1966 static atomic_t lpfc_debugfs_hba_count; 1967 1968 /* 1969 * File operations for the iDiag debugfs 1970 */ 1971 #undef lpfc_idiag_op_pciCfg 1972 static const struct file_operations lpfc_idiag_op_pciCfg = { 1973 .owner = THIS_MODULE, 1974 .open = lpfc_idiag_open, 1975 .llseek = lpfc_debugfs_lseek, 1976 .read = lpfc_idiag_pcicfg_read, 1977 .write = lpfc_idiag_pcicfg_write, 1978 .release = lpfc_idiag_cmd_release, 1979 }; 1980 1981 #undef lpfc_idiag_op_queInfo 1982 static const struct file_operations lpfc_idiag_op_queInfo = { 1983 .owner = THIS_MODULE, 1984 .open = lpfc_idiag_open, 1985 .read = lpfc_idiag_queinfo_read, 1986 .release = lpfc_idiag_release, 1987 }; 1988 1989 #endif 1990 1991 /** 1992 * lpfc_debugfs_initialize - Initialize debugfs for a vport 1993 * @vport: The vport pointer to initialize. 1994 * 1995 * Description: 1996 * When Debugfs is configured this routine sets up the lpfc debugfs file system. 1997 * If not already created, this routine will create the lpfc directory, and 1998 * lpfcX directory (for this HBA), and vportX directory for this vport. It will 1999 * also create each file used to access lpfc specific debugfs information. 2000 **/ 2001 inline void 2002 lpfc_debugfs_initialize(struct lpfc_vport *vport) 2003 { 2004 #ifdef CONFIG_SCSI_LPFC_DEBUG_FS 2005 struct lpfc_hba *phba = vport->phba; 2006 char name[64]; 2007 uint32_t num, i; 2008 2009 if (!lpfc_debugfs_enable) 2010 return; 2011 2012 /* Setup lpfc root directory */ 2013 if (!lpfc_debugfs_root) { 2014 lpfc_debugfs_root = debugfs_create_dir("lpfc", NULL); 2015 atomic_set(&lpfc_debugfs_hba_count, 0); 2016 if (!lpfc_debugfs_root) { 2017 lpfc_printf_vlog(vport, KERN_ERR, LOG_INIT, 2018 "0408 Cannot create debugfs root\n"); 2019 goto debug_failed; 2020 } 2021 } 2022 if (!lpfc_debugfs_start_time) 2023 lpfc_debugfs_start_time = jiffies; 2024 2025 /* Setup funcX directory for specific HBA PCI function */ 2026 snprintf(name, sizeof(name), "fn%d", phba->brd_no); 2027 if (!phba->hba_debugfs_root) { 2028 phba->hba_debugfs_root = 2029 debugfs_create_dir(name, lpfc_debugfs_root); 2030 if (!phba->hba_debugfs_root) { 2031 lpfc_printf_vlog(vport, KERN_ERR, LOG_INIT, 2032 "0412 Cannot create debugfs hba\n"); 2033 goto debug_failed; 2034 } 2035 atomic_inc(&lpfc_debugfs_hba_count); 2036 atomic_set(&phba->debugfs_vport_count, 0); 2037 2038 /* Setup hbqinfo */ 2039 snprintf(name, sizeof(name), "hbqinfo"); 2040 phba->debug_hbqinfo = 2041 debugfs_create_file(name, S_IFREG|S_IRUGO|S_IWUSR, 2042 phba->hba_debugfs_root, 2043 phba, &lpfc_debugfs_op_hbqinfo); 2044 if (!phba->debug_hbqinfo) { 2045 lpfc_printf_vlog(vport, KERN_ERR, LOG_INIT, 2046 "0411 Cannot create debugfs hbqinfo\n"); 2047 goto debug_failed; 2048 } 2049 2050 /* Setup dumpHBASlim */ 2051 if (phba->sli_rev < LPFC_SLI_REV4) { 2052 snprintf(name, sizeof(name), "dumpHBASlim"); 2053 phba->debug_dumpHBASlim = 2054 debugfs_create_file(name, 2055 S_IFREG|S_IRUGO|S_IWUSR, 2056 phba->hba_debugfs_root, 2057 phba, &lpfc_debugfs_op_dumpHBASlim); 2058 if (!phba->debug_dumpHBASlim) { 2059 lpfc_printf_vlog(vport, KERN_ERR, LOG_INIT, 2060 "0413 Cannot create debugfs " 2061 "dumpHBASlim\n"); 2062 goto debug_failed; 2063 } 2064 } else 2065 phba->debug_dumpHBASlim = NULL; 2066 2067 /* Setup dumpHostSlim */ 2068 if (phba->sli_rev < LPFC_SLI_REV4) { 2069 snprintf(name, sizeof(name), "dumpHostSlim"); 2070 phba->debug_dumpHostSlim = 2071 debugfs_create_file(name, 2072 S_IFREG|S_IRUGO|S_IWUSR, 2073 phba->hba_debugfs_root, 2074 phba, &lpfc_debugfs_op_dumpHostSlim); 2075 if (!phba->debug_dumpHostSlim) { 2076 lpfc_printf_vlog(vport, KERN_ERR, LOG_INIT, 2077 "0414 Cannot create debugfs " 2078 "dumpHostSlim\n"); 2079 goto debug_failed; 2080 } 2081 } else 2082 phba->debug_dumpHBASlim = NULL; 2083 2084 /* Setup dumpData */ 2085 snprintf(name, sizeof(name), "dumpData"); 2086 phba->debug_dumpData = 2087 debugfs_create_file(name, S_IFREG|S_IRUGO|S_IWUSR, 2088 phba->hba_debugfs_root, 2089 phba, &lpfc_debugfs_op_dumpData); 2090 if (!phba->debug_dumpData) { 2091 lpfc_printf_vlog(vport, KERN_ERR, LOG_INIT, 2092 "0800 Cannot create debugfs dumpData\n"); 2093 goto debug_failed; 2094 } 2095 2096 /* Setup dumpDif */ 2097 snprintf(name, sizeof(name), "dumpDif"); 2098 phba->debug_dumpDif = 2099 debugfs_create_file(name, S_IFREG|S_IRUGO|S_IWUSR, 2100 phba->hba_debugfs_root, 2101 phba, &lpfc_debugfs_op_dumpDif); 2102 if (!phba->debug_dumpDif) { 2103 lpfc_printf_vlog(vport, KERN_ERR, LOG_INIT, 2104 "0801 Cannot create debugfs dumpDif\n"); 2105 goto debug_failed; 2106 } 2107 2108 /* Setup slow ring trace */ 2109 if (lpfc_debugfs_max_slow_ring_trc) { 2110 num = lpfc_debugfs_max_slow_ring_trc - 1; 2111 if (num & lpfc_debugfs_max_slow_ring_trc) { 2112 /* Change to be a power of 2 */ 2113 num = lpfc_debugfs_max_slow_ring_trc; 2114 i = 0; 2115 while (num > 1) { 2116 num = num >> 1; 2117 i++; 2118 } 2119 lpfc_debugfs_max_slow_ring_trc = (1 << i); 2120 printk(KERN_ERR 2121 "lpfc_debugfs_max_disc_trc changed to " 2122 "%d\n", lpfc_debugfs_max_disc_trc); 2123 } 2124 } 2125 2126 snprintf(name, sizeof(name), "slow_ring_trace"); 2127 phba->debug_slow_ring_trc = 2128 debugfs_create_file(name, S_IFREG|S_IRUGO|S_IWUSR, 2129 phba->hba_debugfs_root, 2130 phba, &lpfc_debugfs_op_slow_ring_trc); 2131 if (!phba->debug_slow_ring_trc) { 2132 lpfc_printf_vlog(vport, KERN_ERR, LOG_INIT, 2133 "0415 Cannot create debugfs " 2134 "slow_ring_trace\n"); 2135 goto debug_failed; 2136 } 2137 if (!phba->slow_ring_trc) { 2138 phba->slow_ring_trc = kmalloc( 2139 (sizeof(struct lpfc_debugfs_trc) * 2140 lpfc_debugfs_max_slow_ring_trc), 2141 GFP_KERNEL); 2142 if (!phba->slow_ring_trc) { 2143 lpfc_printf_vlog(vport, KERN_ERR, LOG_INIT, 2144 "0416 Cannot create debugfs " 2145 "slow_ring buffer\n"); 2146 goto debug_failed; 2147 } 2148 atomic_set(&phba->slow_ring_trc_cnt, 0); 2149 memset(phba->slow_ring_trc, 0, 2150 (sizeof(struct lpfc_debugfs_trc) * 2151 lpfc_debugfs_max_slow_ring_trc)); 2152 } 2153 } 2154 2155 snprintf(name, sizeof(name), "vport%d", vport->vpi); 2156 if (!vport->vport_debugfs_root) { 2157 vport->vport_debugfs_root = 2158 debugfs_create_dir(name, phba->hba_debugfs_root); 2159 if (!vport->vport_debugfs_root) { 2160 lpfc_printf_vlog(vport, KERN_ERR, LOG_INIT, 2161 "0417 Cant create debugfs\n"); 2162 goto debug_failed; 2163 } 2164 atomic_inc(&phba->debugfs_vport_count); 2165 } 2166 2167 if (lpfc_debugfs_max_disc_trc) { 2168 num = lpfc_debugfs_max_disc_trc - 1; 2169 if (num & lpfc_debugfs_max_disc_trc) { 2170 /* Change to be a power of 2 */ 2171 num = lpfc_debugfs_max_disc_trc; 2172 i = 0; 2173 while (num > 1) { 2174 num = num >> 1; 2175 i++; 2176 } 2177 lpfc_debugfs_max_disc_trc = (1 << i); 2178 printk(KERN_ERR 2179 "lpfc_debugfs_max_disc_trc changed to %d\n", 2180 lpfc_debugfs_max_disc_trc); 2181 } 2182 } 2183 2184 vport->disc_trc = kzalloc( 2185 (sizeof(struct lpfc_debugfs_trc) * lpfc_debugfs_max_disc_trc), 2186 GFP_KERNEL); 2187 2188 if (!vport->disc_trc) { 2189 lpfc_printf_vlog(vport, KERN_ERR, LOG_INIT, 2190 "0418 Cannot create debugfs disc trace " 2191 "buffer\n"); 2192 goto debug_failed; 2193 } 2194 atomic_set(&vport->disc_trc_cnt, 0); 2195 2196 snprintf(name, sizeof(name), "discovery_trace"); 2197 vport->debug_disc_trc = 2198 debugfs_create_file(name, S_IFREG|S_IRUGO|S_IWUSR, 2199 vport->vport_debugfs_root, 2200 vport, &lpfc_debugfs_op_disc_trc); 2201 if (!vport->debug_disc_trc) { 2202 lpfc_printf_vlog(vport, KERN_ERR, LOG_INIT, 2203 "0419 Cannot create debugfs " 2204 "discovery_trace\n"); 2205 goto debug_failed; 2206 } 2207 snprintf(name, sizeof(name), "nodelist"); 2208 vport->debug_nodelist = 2209 debugfs_create_file(name, S_IFREG|S_IRUGO|S_IWUSR, 2210 vport->vport_debugfs_root, 2211 vport, &lpfc_debugfs_op_nodelist); 2212 if (!vport->debug_nodelist) { 2213 lpfc_printf_vlog(vport, KERN_ERR, LOG_INIT, 2214 "0409 Cant create debugfs nodelist\n"); 2215 goto debug_failed; 2216 } 2217 2218 /* 2219 * iDiag debugfs root entry points for SLI4 device only 2220 */ 2221 if (phba->sli_rev < LPFC_SLI_REV4) 2222 goto debug_failed; 2223 2224 snprintf(name, sizeof(name), "iDiag"); 2225 if (!phba->idiag_root) { 2226 phba->idiag_root = 2227 debugfs_create_dir(name, phba->hba_debugfs_root); 2228 if (!phba->idiag_root) { 2229 lpfc_printf_vlog(vport, KERN_ERR, LOG_INIT, 2230 "2922 Can't create idiag debugfs\n"); 2231 goto debug_failed; 2232 } 2233 /* Initialize iDiag data structure */ 2234 memset(&idiag, 0, sizeof(idiag)); 2235 } 2236 2237 /* iDiag read PCI config space */ 2238 snprintf(name, sizeof(name), "pciCfg"); 2239 if (!phba->idiag_pci_cfg) { 2240 phba->idiag_pci_cfg = 2241 debugfs_create_file(name, S_IFREG|S_IRUGO|S_IWUSR, 2242 phba->idiag_root, phba, &lpfc_idiag_op_pciCfg); 2243 if (!phba->idiag_pci_cfg) { 2244 lpfc_printf_vlog(vport, KERN_ERR, LOG_INIT, 2245 "2923 Can't create idiag debugfs\n"); 2246 goto debug_failed; 2247 } 2248 idiag.offset.last_rd = 0; 2249 } 2250 2251 /* iDiag get PCI function queue information */ 2252 snprintf(name, sizeof(name), "queInfo"); 2253 if (!phba->idiag_que_info) { 2254 phba->idiag_que_info = 2255 debugfs_create_file(name, S_IFREG|S_IRUGO, 2256 phba->idiag_root, phba, &lpfc_idiag_op_queInfo); 2257 if (!phba->idiag_que_info) { 2258 lpfc_printf_vlog(vport, KERN_ERR, LOG_INIT, 2259 "2924 Can't create idiag debugfs\n"); 2260 goto debug_failed; 2261 } 2262 } 2263 2264 debug_failed: 2265 return; 2266 #endif 2267 } 2268 2269 /** 2270 * lpfc_debugfs_terminate - Tear down debugfs infrastructure for this vport 2271 * @vport: The vport pointer to remove from debugfs. 2272 * 2273 * Description: 2274 * When Debugfs is configured this routine removes debugfs file system elements 2275 * that are specific to this vport. It also checks to see if there are any 2276 * users left for the debugfs directories associated with the HBA and driver. If 2277 * this is the last user of the HBA directory or driver directory then it will 2278 * remove those from the debugfs infrastructure as well. 2279 **/ 2280 inline void 2281 lpfc_debugfs_terminate(struct lpfc_vport *vport) 2282 { 2283 #ifdef CONFIG_SCSI_LPFC_DEBUG_FS 2284 struct lpfc_hba *phba = vport->phba; 2285 2286 if (vport->disc_trc) { 2287 kfree(vport->disc_trc); 2288 vport->disc_trc = NULL; 2289 } 2290 if (vport->debug_disc_trc) { 2291 debugfs_remove(vport->debug_disc_trc); /* discovery_trace */ 2292 vport->debug_disc_trc = NULL; 2293 } 2294 if (vport->debug_nodelist) { 2295 debugfs_remove(vport->debug_nodelist); /* nodelist */ 2296 vport->debug_nodelist = NULL; 2297 } 2298 2299 if (vport->vport_debugfs_root) { 2300 debugfs_remove(vport->vport_debugfs_root); /* vportX */ 2301 vport->vport_debugfs_root = NULL; 2302 atomic_dec(&phba->debugfs_vport_count); 2303 } 2304 if (atomic_read(&phba->debugfs_vport_count) == 0) { 2305 2306 if (phba->debug_hbqinfo) { 2307 debugfs_remove(phba->debug_hbqinfo); /* hbqinfo */ 2308 phba->debug_hbqinfo = NULL; 2309 } 2310 if (phba->debug_dumpHBASlim) { 2311 debugfs_remove(phba->debug_dumpHBASlim); /* HBASlim */ 2312 phba->debug_dumpHBASlim = NULL; 2313 } 2314 if (phba->debug_dumpHostSlim) { 2315 debugfs_remove(phba->debug_dumpHostSlim); /* HostSlim */ 2316 phba->debug_dumpHostSlim = NULL; 2317 } 2318 if (phba->debug_dumpData) { 2319 debugfs_remove(phba->debug_dumpData); /* dumpData */ 2320 phba->debug_dumpData = NULL; 2321 } 2322 2323 if (phba->debug_dumpDif) { 2324 debugfs_remove(phba->debug_dumpDif); /* dumpDif */ 2325 phba->debug_dumpDif = NULL; 2326 } 2327 2328 if (phba->slow_ring_trc) { 2329 kfree(phba->slow_ring_trc); 2330 phba->slow_ring_trc = NULL; 2331 } 2332 if (phba->debug_slow_ring_trc) { 2333 /* slow_ring_trace */ 2334 debugfs_remove(phba->debug_slow_ring_trc); 2335 phba->debug_slow_ring_trc = NULL; 2336 } 2337 2338 /* 2339 * iDiag release 2340 */ 2341 if (phba->sli_rev == LPFC_SLI_REV4) { 2342 if (phba->idiag_que_info) { 2343 /* iDiag queInfo */ 2344 debugfs_remove(phba->idiag_que_info); 2345 phba->idiag_que_info = NULL; 2346 } 2347 if (phba->idiag_pci_cfg) { 2348 /* iDiag pciCfg */ 2349 debugfs_remove(phba->idiag_pci_cfg); 2350 phba->idiag_pci_cfg = NULL; 2351 } 2352 2353 /* Finally remove the iDiag debugfs root */ 2354 if (phba->idiag_root) { 2355 /* iDiag root */ 2356 debugfs_remove(phba->idiag_root); 2357 phba->idiag_root = NULL; 2358 } 2359 } 2360 2361 if (phba->hba_debugfs_root) { 2362 debugfs_remove(phba->hba_debugfs_root); /* fnX */ 2363 phba->hba_debugfs_root = NULL; 2364 atomic_dec(&lpfc_debugfs_hba_count); 2365 } 2366 2367 if (atomic_read(&lpfc_debugfs_hba_count) == 0) { 2368 debugfs_remove(lpfc_debugfs_root); /* lpfc */ 2369 lpfc_debugfs_root = NULL; 2370 } 2371 } 2372 #endif 2373 return; 2374 } 2375