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 boundary */ 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 boundary */ 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 * --------------------------------- 1123 * iDiag debugfs file access methods 1124 * --------------------------------- 1125 * 1126 * All access methods are through the proper SLI4 PCI function's debugfs 1127 * iDiag directory: 1128 * 1129 * /sys/kernel/debug/lpfc/fn<#>/iDiag 1130 */ 1131 1132 /** 1133 * lpfc_idiag_cmd_get - Get and parse idiag debugfs comands from user space 1134 * @buf: The pointer to the user space buffer. 1135 * @nbytes: The number of bytes in the user space buffer. 1136 * @idiag_cmd: pointer to the idiag command struct. 1137 * 1138 * This routine reads data from debugfs user space buffer and parses the 1139 * buffer for getting the idiag command and arguments. The while space in 1140 * between the set of data is used as the parsing separator. 1141 * 1142 * This routine returns 0 when successful, it returns proper error code 1143 * back to the user space in error conditions. 1144 */ 1145 static int lpfc_idiag_cmd_get(const char __user *buf, size_t nbytes, 1146 struct lpfc_idiag_cmd *idiag_cmd) 1147 { 1148 char mybuf[64]; 1149 char *pbuf, *step_str; 1150 int bsize, i; 1151 1152 /* Protect copy from user */ 1153 if (!access_ok(VERIFY_READ, buf, nbytes)) 1154 return -EFAULT; 1155 1156 memset(mybuf, 0, sizeof(mybuf)); 1157 memset(idiag_cmd, 0, sizeof(*idiag_cmd)); 1158 bsize = min(nbytes, (sizeof(mybuf)-1)); 1159 1160 if (copy_from_user(mybuf, buf, bsize)) 1161 return -EFAULT; 1162 pbuf = &mybuf[0]; 1163 step_str = strsep(&pbuf, "\t "); 1164 1165 /* The opcode must present */ 1166 if (!step_str) 1167 return -EINVAL; 1168 1169 idiag_cmd->opcode = simple_strtol(step_str, NULL, 0); 1170 if (idiag_cmd->opcode == 0) 1171 return -EINVAL; 1172 1173 for (i = 0; i < LPFC_IDIAG_CMD_DATA_SIZE; i++) { 1174 step_str = strsep(&pbuf, "\t "); 1175 if (!step_str) 1176 return i; 1177 idiag_cmd->data[i] = simple_strtol(step_str, NULL, 0); 1178 } 1179 return i; 1180 } 1181 1182 /** 1183 * lpfc_idiag_open - idiag open debugfs 1184 * @inode: The inode pointer that contains a pointer to phba. 1185 * @file: The file pointer to attach the file operation. 1186 * 1187 * Description: 1188 * This routine is the entry point for the debugfs open file operation. It 1189 * gets the reference to phba from the i_private field in @inode, it then 1190 * allocates buffer for the file operation, performs the necessary PCI config 1191 * space read into the allocated buffer according to the idiag user command 1192 * setup, and then returns a pointer to buffer in the private_data field in 1193 * @file. 1194 * 1195 * Returns: 1196 * This function returns zero if successful. On error it will return an 1197 * negative error value. 1198 **/ 1199 static int 1200 lpfc_idiag_open(struct inode *inode, struct file *file) 1201 { 1202 struct lpfc_debug *debug; 1203 1204 debug = kmalloc(sizeof(*debug), GFP_KERNEL); 1205 if (!debug) 1206 return -ENOMEM; 1207 1208 debug->i_private = inode->i_private; 1209 debug->buffer = NULL; 1210 file->private_data = debug; 1211 1212 return 0; 1213 } 1214 1215 /** 1216 * lpfc_idiag_release - Release idiag access file operation 1217 * @inode: The inode pointer that contains a vport pointer. (unused) 1218 * @file: The file pointer that contains the buffer to release. 1219 * 1220 * Description: 1221 * This routine is the generic release routine for the idiag access file 1222 * operation, it frees the buffer that was allocated when the debugfs file 1223 * was opened. 1224 * 1225 * Returns: 1226 * This function returns zero. 1227 **/ 1228 static int 1229 lpfc_idiag_release(struct inode *inode, struct file *file) 1230 { 1231 struct lpfc_debug *debug = file->private_data; 1232 1233 /* Free the buffers to the file operation */ 1234 kfree(debug->buffer); 1235 kfree(debug); 1236 1237 return 0; 1238 } 1239 1240 /** 1241 * lpfc_idiag_cmd_release - Release idiag cmd access file operation 1242 * @inode: The inode pointer that contains a vport pointer. (unused) 1243 * @file: The file pointer that contains the buffer to release. 1244 * 1245 * Description: 1246 * This routine frees the buffer that was allocated when the debugfs file 1247 * was opened. It also reset the fields in the idiag command struct in the 1248 * case of command for write operation. 1249 * 1250 * Returns: 1251 * This function returns zero. 1252 **/ 1253 static int 1254 lpfc_idiag_cmd_release(struct inode *inode, struct file *file) 1255 { 1256 struct lpfc_debug *debug = file->private_data; 1257 1258 if (debug->op == LPFC_IDIAG_OP_WR) { 1259 switch (idiag.cmd.opcode) { 1260 case LPFC_IDIAG_CMD_PCICFG_WR: 1261 case LPFC_IDIAG_CMD_PCICFG_ST: 1262 case LPFC_IDIAG_CMD_PCICFG_CL: 1263 case LPFC_IDIAG_CMD_QUEACC_WR: 1264 case LPFC_IDIAG_CMD_QUEACC_ST: 1265 case LPFC_IDIAG_CMD_QUEACC_CL: 1266 memset(&idiag, 0, sizeof(idiag)); 1267 break; 1268 default: 1269 break; 1270 } 1271 } 1272 1273 /* Free the buffers to the file operation */ 1274 kfree(debug->buffer); 1275 kfree(debug); 1276 1277 return 0; 1278 } 1279 1280 /** 1281 * lpfc_idiag_pcicfg_read - idiag debugfs read pcicfg 1282 * @file: The file pointer to read from. 1283 * @buf: The buffer to copy the data to. 1284 * @nbytes: The number of bytes to read. 1285 * @ppos: The position in the file to start reading from. 1286 * 1287 * Description: 1288 * This routine reads data from the @phba pci config space according to the 1289 * idiag command, and copies to user @buf. Depending on the PCI config space 1290 * read command setup, it does either a single register read of a byte 1291 * (8 bits), a word (16 bits), or a dword (32 bits) or browsing through all 1292 * registers from the 4K extended PCI config space. 1293 * 1294 * Returns: 1295 * This function returns the amount of data that was read (this could be less 1296 * than @nbytes if the end of the file was reached) or a negative error value. 1297 **/ 1298 static ssize_t 1299 lpfc_idiag_pcicfg_read(struct file *file, char __user *buf, size_t nbytes, 1300 loff_t *ppos) 1301 { 1302 struct lpfc_debug *debug = file->private_data; 1303 struct lpfc_hba *phba = (struct lpfc_hba *)debug->i_private; 1304 int offset_label, offset, len = 0, index = LPFC_PCI_CFG_RD_SIZE; 1305 int where, count; 1306 char *pbuffer; 1307 struct pci_dev *pdev; 1308 uint32_t u32val; 1309 uint16_t u16val; 1310 uint8_t u8val; 1311 1312 pdev = phba->pcidev; 1313 if (!pdev) 1314 return 0; 1315 1316 /* This is a user read operation */ 1317 debug->op = LPFC_IDIAG_OP_RD; 1318 1319 if (!debug->buffer) 1320 debug->buffer = kmalloc(LPFC_PCI_CFG_SIZE, GFP_KERNEL); 1321 if (!debug->buffer) 1322 return 0; 1323 pbuffer = debug->buffer; 1324 1325 if (*ppos) 1326 return 0; 1327 1328 if (idiag.cmd.opcode == LPFC_IDIAG_CMD_PCICFG_RD) { 1329 where = idiag.cmd.data[0]; 1330 count = idiag.cmd.data[1]; 1331 } else 1332 return 0; 1333 1334 /* Read single PCI config space register */ 1335 switch (count) { 1336 case SIZE_U8: /* byte (8 bits) */ 1337 pci_read_config_byte(pdev, where, &u8val); 1338 len += snprintf(pbuffer+len, LPFC_PCI_CFG_SIZE-len, 1339 "%03x: %02x\n", where, u8val); 1340 break; 1341 case SIZE_U16: /* word (16 bits) */ 1342 pci_read_config_word(pdev, where, &u16val); 1343 len += snprintf(pbuffer+len, LPFC_PCI_CFG_SIZE-len, 1344 "%03x: %04x\n", where, u16val); 1345 break; 1346 case SIZE_U32: /* double word (32 bits) */ 1347 pci_read_config_dword(pdev, where, &u32val); 1348 len += snprintf(pbuffer+len, LPFC_PCI_CFG_SIZE-len, 1349 "%03x: %08x\n", where, u32val); 1350 break; 1351 case LPFC_PCI_CFG_BROWSE: /* browse all */ 1352 goto pcicfg_browse; 1353 break; 1354 default: 1355 /* illegal count */ 1356 len = 0; 1357 break; 1358 } 1359 return simple_read_from_buffer(buf, nbytes, ppos, pbuffer, len); 1360 1361 pcicfg_browse: 1362 1363 /* Browse all PCI config space registers */ 1364 offset_label = idiag.offset.last_rd; 1365 offset = offset_label; 1366 1367 /* Read PCI config space */ 1368 len += snprintf(pbuffer+len, LPFC_PCI_CFG_SIZE-len, 1369 "%03x: ", offset_label); 1370 while (index > 0) { 1371 pci_read_config_dword(pdev, offset, &u32val); 1372 len += snprintf(pbuffer+len, LPFC_PCI_CFG_SIZE-len, 1373 "%08x ", u32val); 1374 offset += sizeof(uint32_t); 1375 index -= sizeof(uint32_t); 1376 if (!index) 1377 len += snprintf(pbuffer+len, LPFC_PCI_CFG_SIZE-len, 1378 "\n"); 1379 else if (!(index % (8 * sizeof(uint32_t)))) { 1380 offset_label += (8 * sizeof(uint32_t)); 1381 len += snprintf(pbuffer+len, LPFC_PCI_CFG_SIZE-len, 1382 "\n%03x: ", offset_label); 1383 } 1384 } 1385 1386 /* Set up the offset for next portion of pci cfg read */ 1387 idiag.offset.last_rd += LPFC_PCI_CFG_RD_SIZE; 1388 if (idiag.offset.last_rd >= LPFC_PCI_CFG_SIZE) 1389 idiag.offset.last_rd = 0; 1390 1391 return simple_read_from_buffer(buf, nbytes, ppos, pbuffer, len); 1392 } 1393 1394 /** 1395 * lpfc_idiag_pcicfg_write - Syntax check and set up idiag pcicfg commands 1396 * @file: The file pointer to read from. 1397 * @buf: The buffer to copy the user data from. 1398 * @nbytes: The number of bytes to get. 1399 * @ppos: The position in the file to start reading from. 1400 * 1401 * This routine get the debugfs idiag command struct from user space and 1402 * then perform the syntax check for PCI config space read or write command 1403 * accordingly. In the case of PCI config space read command, it sets up 1404 * the command in the idiag command struct for the debugfs read operation. 1405 * In the case of PCI config space write operation, it executes the write 1406 * operation into the PCI config space accordingly. 1407 * 1408 * It returns the @nbytges passing in from debugfs user space when successful. 1409 * In case of error conditions, it returns proper error code back to the user 1410 * space. 1411 */ 1412 static ssize_t 1413 lpfc_idiag_pcicfg_write(struct file *file, const char __user *buf, 1414 size_t nbytes, loff_t *ppos) 1415 { 1416 struct lpfc_debug *debug = file->private_data; 1417 struct lpfc_hba *phba = (struct lpfc_hba *)debug->i_private; 1418 uint32_t where, value, count; 1419 uint32_t u32val; 1420 uint16_t u16val; 1421 uint8_t u8val; 1422 struct pci_dev *pdev; 1423 int rc; 1424 1425 pdev = phba->pcidev; 1426 if (!pdev) 1427 return -EFAULT; 1428 1429 /* This is a user write operation */ 1430 debug->op = LPFC_IDIAG_OP_WR; 1431 1432 rc = lpfc_idiag_cmd_get(buf, nbytes, &idiag.cmd); 1433 if (rc < 0) 1434 return rc; 1435 1436 if (idiag.cmd.opcode == LPFC_IDIAG_CMD_PCICFG_RD) { 1437 /* Sanity check on PCI config read command line arguments */ 1438 if (rc != LPFC_PCI_CFG_RD_CMD_ARG) 1439 goto error_out; 1440 /* Read command from PCI config space, set up command fields */ 1441 where = idiag.cmd.data[0]; 1442 count = idiag.cmd.data[1]; 1443 if (count == LPFC_PCI_CFG_BROWSE) { 1444 if (where % sizeof(uint32_t)) 1445 goto error_out; 1446 /* Starting offset to browse */ 1447 idiag.offset.last_rd = where; 1448 } else if ((count != sizeof(uint8_t)) && 1449 (count != sizeof(uint16_t)) && 1450 (count != sizeof(uint32_t))) 1451 goto error_out; 1452 if (count == sizeof(uint8_t)) { 1453 if (where > LPFC_PCI_CFG_SIZE - sizeof(uint8_t)) 1454 goto error_out; 1455 if (where % sizeof(uint8_t)) 1456 goto error_out; 1457 } 1458 if (count == sizeof(uint16_t)) { 1459 if (where > LPFC_PCI_CFG_SIZE - sizeof(uint16_t)) 1460 goto error_out; 1461 if (where % sizeof(uint16_t)) 1462 goto error_out; 1463 } 1464 if (count == sizeof(uint32_t)) { 1465 if (where > LPFC_PCI_CFG_SIZE - sizeof(uint32_t)) 1466 goto error_out; 1467 if (where % sizeof(uint32_t)) 1468 goto error_out; 1469 } 1470 } else if (idiag.cmd.opcode == LPFC_IDIAG_CMD_PCICFG_WR || 1471 idiag.cmd.opcode == LPFC_IDIAG_CMD_PCICFG_ST || 1472 idiag.cmd.opcode == LPFC_IDIAG_CMD_PCICFG_CL) { 1473 /* Sanity check on PCI config write command line arguments */ 1474 if (rc != LPFC_PCI_CFG_WR_CMD_ARG) 1475 goto error_out; 1476 /* Write command to PCI config space, read-modify-write */ 1477 where = idiag.cmd.data[0]; 1478 count = idiag.cmd.data[1]; 1479 value = idiag.cmd.data[2]; 1480 /* Sanity checks */ 1481 if ((count != sizeof(uint8_t)) && 1482 (count != sizeof(uint16_t)) && 1483 (count != sizeof(uint32_t))) 1484 goto error_out; 1485 if (count == sizeof(uint8_t)) { 1486 if (where > LPFC_PCI_CFG_SIZE - sizeof(uint8_t)) 1487 goto error_out; 1488 if (where % sizeof(uint8_t)) 1489 goto error_out; 1490 if (idiag.cmd.opcode == LPFC_IDIAG_CMD_PCICFG_WR) 1491 pci_write_config_byte(pdev, where, 1492 (uint8_t)value); 1493 if (idiag.cmd.opcode == LPFC_IDIAG_CMD_PCICFG_ST) { 1494 rc = pci_read_config_byte(pdev, where, &u8val); 1495 if (!rc) { 1496 u8val |= (uint8_t)value; 1497 pci_write_config_byte(pdev, where, 1498 u8val); 1499 } 1500 } 1501 if (idiag.cmd.opcode == LPFC_IDIAG_CMD_PCICFG_CL) { 1502 rc = pci_read_config_byte(pdev, where, &u8val); 1503 if (!rc) { 1504 u8val &= (uint8_t)(~value); 1505 pci_write_config_byte(pdev, where, 1506 u8val); 1507 } 1508 } 1509 } 1510 if (count == sizeof(uint16_t)) { 1511 if (where > LPFC_PCI_CFG_SIZE - sizeof(uint16_t)) 1512 goto error_out; 1513 if (where % sizeof(uint16_t)) 1514 goto error_out; 1515 if (idiag.cmd.opcode == LPFC_IDIAG_CMD_PCICFG_WR) 1516 pci_write_config_word(pdev, where, 1517 (uint16_t)value); 1518 if (idiag.cmd.opcode == LPFC_IDIAG_CMD_PCICFG_ST) { 1519 rc = pci_read_config_word(pdev, where, &u16val); 1520 if (!rc) { 1521 u16val |= (uint16_t)value; 1522 pci_write_config_word(pdev, where, 1523 u16val); 1524 } 1525 } 1526 if (idiag.cmd.opcode == LPFC_IDIAG_CMD_PCICFG_CL) { 1527 rc = pci_read_config_word(pdev, where, &u16val); 1528 if (!rc) { 1529 u16val &= (uint16_t)(~value); 1530 pci_write_config_word(pdev, where, 1531 u16val); 1532 } 1533 } 1534 } 1535 if (count == sizeof(uint32_t)) { 1536 if (where > LPFC_PCI_CFG_SIZE - sizeof(uint32_t)) 1537 goto error_out; 1538 if (where % sizeof(uint32_t)) 1539 goto error_out; 1540 if (idiag.cmd.opcode == LPFC_IDIAG_CMD_PCICFG_WR) 1541 pci_write_config_dword(pdev, where, value); 1542 if (idiag.cmd.opcode == LPFC_IDIAG_CMD_PCICFG_ST) { 1543 rc = pci_read_config_dword(pdev, where, 1544 &u32val); 1545 if (!rc) { 1546 u32val |= value; 1547 pci_write_config_dword(pdev, where, 1548 u32val); 1549 } 1550 } 1551 if (idiag.cmd.opcode == LPFC_IDIAG_CMD_PCICFG_CL) { 1552 rc = pci_read_config_dword(pdev, where, 1553 &u32val); 1554 if (!rc) { 1555 u32val &= ~value; 1556 pci_write_config_dword(pdev, where, 1557 u32val); 1558 } 1559 } 1560 } 1561 } else 1562 /* All other opecodes are illegal for now */ 1563 goto error_out; 1564 1565 return nbytes; 1566 error_out: 1567 memset(&idiag, 0, sizeof(idiag)); 1568 return -EINVAL; 1569 } 1570 1571 /** 1572 * lpfc_idiag_queinfo_read - idiag debugfs read queue information 1573 * @file: The file pointer to read from. 1574 * @buf: The buffer to copy the data to. 1575 * @nbytes: The number of bytes to read. 1576 * @ppos: The position in the file to start reading from. 1577 * 1578 * Description: 1579 * This routine reads data from the @phba SLI4 PCI function queue information, 1580 * and copies to user @buf. 1581 * 1582 * Returns: 1583 * This function returns the amount of data that was read (this could be less 1584 * than @nbytes if the end of the file was reached) or a negative error value. 1585 **/ 1586 static ssize_t 1587 lpfc_idiag_queinfo_read(struct file *file, char __user *buf, size_t nbytes, 1588 loff_t *ppos) 1589 { 1590 struct lpfc_debug *debug = file->private_data; 1591 struct lpfc_hba *phba = (struct lpfc_hba *)debug->i_private; 1592 int len = 0, fcp_qidx; 1593 char *pbuffer; 1594 1595 if (!debug->buffer) 1596 debug->buffer = kmalloc(LPFC_QUE_INFO_GET_BUF_SIZE, GFP_KERNEL); 1597 if (!debug->buffer) 1598 return 0; 1599 pbuffer = debug->buffer; 1600 1601 if (*ppos) 1602 return 0; 1603 1604 /* Get slow-path event queue information */ 1605 len += snprintf(pbuffer+len, LPFC_QUE_INFO_GET_BUF_SIZE-len, 1606 "Slow-path EQ information:\n"); 1607 len += snprintf(pbuffer+len, LPFC_QUE_INFO_GET_BUF_SIZE-len, 1608 "\tEQID[%02d], " 1609 "QE-COUNT[%04d], QE-SIZE[%04d], " 1610 "HOST-INDEX[%04d], PORT-INDEX[%04d]\n\n", 1611 phba->sli4_hba.sp_eq->queue_id, 1612 phba->sli4_hba.sp_eq->entry_count, 1613 phba->sli4_hba.sp_eq->entry_size, 1614 phba->sli4_hba.sp_eq->host_index, 1615 phba->sli4_hba.sp_eq->hba_index); 1616 1617 /* Get fast-path event queue information */ 1618 len += snprintf(pbuffer+len, LPFC_QUE_INFO_GET_BUF_SIZE-len, 1619 "Fast-path EQ information:\n"); 1620 for (fcp_qidx = 0; fcp_qidx < phba->cfg_fcp_eq_count; fcp_qidx++) { 1621 len += snprintf(pbuffer+len, LPFC_QUE_INFO_GET_BUF_SIZE-len, 1622 "\tEQID[%02d], " 1623 "QE-COUNT[%04d], QE-SIZE[%04d], " 1624 "HOST-INDEX[%04d], PORT-INDEX[%04d]\n", 1625 phba->sli4_hba.fp_eq[fcp_qidx]->queue_id, 1626 phba->sli4_hba.fp_eq[fcp_qidx]->entry_count, 1627 phba->sli4_hba.fp_eq[fcp_qidx]->entry_size, 1628 phba->sli4_hba.fp_eq[fcp_qidx]->host_index, 1629 phba->sli4_hba.fp_eq[fcp_qidx]->hba_index); 1630 } 1631 len += snprintf(pbuffer+len, LPFC_QUE_INFO_GET_BUF_SIZE-len, "\n"); 1632 1633 /* Get mailbox complete queue information */ 1634 len += snprintf(pbuffer+len, LPFC_QUE_INFO_GET_BUF_SIZE-len, 1635 "Slow-path MBX CQ information:\n"); 1636 len += snprintf(pbuffer+len, LPFC_QUE_INFO_GET_BUF_SIZE-len, 1637 "Associated EQID[%02d]:\n", 1638 phba->sli4_hba.mbx_cq->assoc_qid); 1639 len += snprintf(pbuffer+len, LPFC_QUE_INFO_GET_BUF_SIZE-len, 1640 "\tCQID[%02d], " 1641 "QE-COUNT[%04d], QE-SIZE[%04d], " 1642 "HOST-INDEX[%04d], PORT-INDEX[%04d]\n\n", 1643 phba->sli4_hba.mbx_cq->queue_id, 1644 phba->sli4_hba.mbx_cq->entry_count, 1645 phba->sli4_hba.mbx_cq->entry_size, 1646 phba->sli4_hba.mbx_cq->host_index, 1647 phba->sli4_hba.mbx_cq->hba_index); 1648 1649 /* Get slow-path complete queue information */ 1650 len += snprintf(pbuffer+len, LPFC_QUE_INFO_GET_BUF_SIZE-len, 1651 "Slow-path ELS CQ information:\n"); 1652 len += snprintf(pbuffer+len, LPFC_QUE_INFO_GET_BUF_SIZE-len, 1653 "Associated EQID[%02d]:\n", 1654 phba->sli4_hba.els_cq->assoc_qid); 1655 len += snprintf(pbuffer+len, LPFC_QUE_INFO_GET_BUF_SIZE-len, 1656 "\tCQID [%02d], " 1657 "QE-COUNT[%04d], QE-SIZE[%04d], " 1658 "HOST-INDEX[%04d], PORT-INDEX[%04d]\n\n", 1659 phba->sli4_hba.els_cq->queue_id, 1660 phba->sli4_hba.els_cq->entry_count, 1661 phba->sli4_hba.els_cq->entry_size, 1662 phba->sli4_hba.els_cq->host_index, 1663 phba->sli4_hba.els_cq->hba_index); 1664 1665 /* Get fast-path complete queue information */ 1666 len += snprintf(pbuffer+len, LPFC_QUE_INFO_GET_BUF_SIZE-len, 1667 "Fast-path FCP CQ information:\n"); 1668 for (fcp_qidx = 0; fcp_qidx < phba->cfg_fcp_eq_count; fcp_qidx++) { 1669 len += snprintf(pbuffer+len, LPFC_QUE_INFO_GET_BUF_SIZE-len, 1670 "Associated EQID[%02d]:\n", 1671 phba->sli4_hba.fcp_cq[fcp_qidx]->assoc_qid); 1672 len += snprintf(pbuffer+len, LPFC_QUE_INFO_GET_BUF_SIZE-len, 1673 "\tCQID[%02d], " 1674 "QE-COUNT[%04d], QE-SIZE[%04d], " 1675 "HOST-INDEX[%04d], PORT-INDEX[%04d]\n", 1676 phba->sli4_hba.fcp_cq[fcp_qidx]->queue_id, 1677 phba->sli4_hba.fcp_cq[fcp_qidx]->entry_count, 1678 phba->sli4_hba.fcp_cq[fcp_qidx]->entry_size, 1679 phba->sli4_hba.fcp_cq[fcp_qidx]->host_index, 1680 phba->sli4_hba.fcp_cq[fcp_qidx]->hba_index); 1681 } 1682 len += snprintf(pbuffer+len, LPFC_QUE_INFO_GET_BUF_SIZE-len, "\n"); 1683 1684 /* Get mailbox queue information */ 1685 len += snprintf(pbuffer+len, LPFC_QUE_INFO_GET_BUF_SIZE-len, 1686 "Slow-path MBX MQ information:\n"); 1687 len += snprintf(pbuffer+len, LPFC_QUE_INFO_GET_BUF_SIZE-len, 1688 "Associated CQID[%02d]:\n", 1689 phba->sli4_hba.mbx_wq->assoc_qid); 1690 len += snprintf(pbuffer+len, LPFC_QUE_INFO_GET_BUF_SIZE-len, 1691 "\tWQID[%02d], " 1692 "QE-COUNT[%04d], QE-SIZE[%04d], " 1693 "HOST-INDEX[%04d], PORT-INDEX[%04d]\n\n", 1694 phba->sli4_hba.mbx_wq->queue_id, 1695 phba->sli4_hba.mbx_wq->entry_count, 1696 phba->sli4_hba.mbx_wq->entry_size, 1697 phba->sli4_hba.mbx_wq->host_index, 1698 phba->sli4_hba.mbx_wq->hba_index); 1699 1700 /* Get slow-path work queue information */ 1701 len += snprintf(pbuffer+len, LPFC_QUE_INFO_GET_BUF_SIZE-len, 1702 "Slow-path ELS WQ information:\n"); 1703 len += snprintf(pbuffer+len, LPFC_QUE_INFO_GET_BUF_SIZE-len, 1704 "Associated CQID[%02d]:\n", 1705 phba->sli4_hba.els_wq->assoc_qid); 1706 len += snprintf(pbuffer+len, LPFC_QUE_INFO_GET_BUF_SIZE-len, 1707 "\tWQID[%02d], " 1708 "QE-COUNT[%04d], QE-SIZE[%04d], " 1709 "HOST-INDEX[%04d], PORT-INDEX[%04d]\n\n", 1710 phba->sli4_hba.els_wq->queue_id, 1711 phba->sli4_hba.els_wq->entry_count, 1712 phba->sli4_hba.els_wq->entry_size, 1713 phba->sli4_hba.els_wq->host_index, 1714 phba->sli4_hba.els_wq->hba_index); 1715 1716 /* Get fast-path work queue information */ 1717 len += snprintf(pbuffer+len, LPFC_QUE_INFO_GET_BUF_SIZE-len, 1718 "Fast-path FCP WQ information:\n"); 1719 for (fcp_qidx = 0; fcp_qidx < phba->cfg_fcp_wq_count; fcp_qidx++) { 1720 len += snprintf(pbuffer+len, LPFC_QUE_INFO_GET_BUF_SIZE-len, 1721 "Associated CQID[%02d]:\n", 1722 phba->sli4_hba.fcp_wq[fcp_qidx]->assoc_qid); 1723 len += snprintf(pbuffer+len, LPFC_QUE_INFO_GET_BUF_SIZE-len, 1724 "\tWQID[%02d], " 1725 "QE-COUNT[%04d], WQE-SIZE[%04d], " 1726 "HOST-INDEX[%04d], PORT-INDEX[%04d]\n", 1727 phba->sli4_hba.fcp_wq[fcp_qidx]->queue_id, 1728 phba->sli4_hba.fcp_wq[fcp_qidx]->entry_count, 1729 phba->sli4_hba.fcp_wq[fcp_qidx]->entry_size, 1730 phba->sli4_hba.fcp_wq[fcp_qidx]->host_index, 1731 phba->sli4_hba.fcp_wq[fcp_qidx]->hba_index); 1732 } 1733 len += snprintf(pbuffer+len, LPFC_QUE_INFO_GET_BUF_SIZE-len, "\n"); 1734 1735 /* Get receive queue information */ 1736 len += snprintf(pbuffer+len, LPFC_QUE_INFO_GET_BUF_SIZE-len, 1737 "Slow-path RQ information:\n"); 1738 len += snprintf(pbuffer+len, LPFC_QUE_INFO_GET_BUF_SIZE-len, 1739 "Associated CQID[%02d]:\n", 1740 phba->sli4_hba.hdr_rq->assoc_qid); 1741 len += snprintf(pbuffer+len, LPFC_QUE_INFO_GET_BUF_SIZE-len, 1742 "\tHQID[%02d], " 1743 "QE-COUNT[%04d], QE-SIZE[%04d], " 1744 "HOST-INDEX[%04d], PORT-INDEX[%04d]\n", 1745 phba->sli4_hba.hdr_rq->queue_id, 1746 phba->sli4_hba.hdr_rq->entry_count, 1747 phba->sli4_hba.hdr_rq->entry_size, 1748 phba->sli4_hba.hdr_rq->host_index, 1749 phba->sli4_hba.hdr_rq->hba_index); 1750 len += snprintf(pbuffer+len, LPFC_QUE_INFO_GET_BUF_SIZE-len, 1751 "\tDQID[%02d], " 1752 "QE-COUNT[%04d], QE-SIZE[%04d], " 1753 "HOST-INDEX[%04d], PORT-INDEX[%04d]\n", 1754 phba->sli4_hba.dat_rq->queue_id, 1755 phba->sli4_hba.dat_rq->entry_count, 1756 phba->sli4_hba.dat_rq->entry_size, 1757 phba->sli4_hba.dat_rq->host_index, 1758 phba->sli4_hba.dat_rq->hba_index); 1759 1760 return simple_read_from_buffer(buf, nbytes, ppos, pbuffer, len); 1761 } 1762 1763 /** 1764 * lpfc_idiag_que_param_check - queue access command parameter sanity check 1765 * @q: The pointer to queue structure. 1766 * @index: The index into a queue entry. 1767 * @count: The number of queue entries to access. 1768 * 1769 * Description: 1770 * The routine performs sanity check on device queue access method commands. 1771 * 1772 * Returns: 1773 * This function returns -EINVAL when fails the sanity check, otherwise, it 1774 * returns 0. 1775 **/ 1776 static int 1777 lpfc_idiag_que_param_check(struct lpfc_queue *q, int index, int count) 1778 { 1779 /* Only support single entry read or browsing */ 1780 if ((count != 1) && (count != LPFC_QUE_ACC_BROWSE)) 1781 return -EINVAL; 1782 if (index > q->entry_count - 1) 1783 return -EINVAL; 1784 return 0; 1785 } 1786 1787 /** 1788 * lpfc_idiag_queacc_read_qe - read a single entry from the given queue index 1789 * @pbuffer: The pointer to buffer to copy the read data into. 1790 * @pque: The pointer to the queue to be read. 1791 * @index: The index into the queue entry. 1792 * 1793 * Description: 1794 * This routine reads out a single entry from the given queue's index location 1795 * and copies it into the buffer provided. 1796 * 1797 * Returns: 1798 * This function returns 0 when it fails, otherwise, it returns the length of 1799 * the data read into the buffer provided. 1800 **/ 1801 static int 1802 lpfc_idiag_queacc_read_qe(char *pbuffer, int len, struct lpfc_queue *pque, 1803 uint32_t index) 1804 { 1805 int offset, esize; 1806 uint32_t *pentry; 1807 1808 if (!pbuffer || !pque) 1809 return 0; 1810 1811 esize = pque->entry_size; 1812 len += snprintf(pbuffer+len, LPFC_QUE_ACC_BUF_SIZE-len, 1813 "QE-INDEX[%04d]:\n", index); 1814 1815 offset = 0; 1816 pentry = pque->qe[index].address; 1817 while (esize > 0) { 1818 len += snprintf(pbuffer+len, LPFC_QUE_ACC_BUF_SIZE-len, 1819 "%08x ", *pentry); 1820 pentry++; 1821 offset += sizeof(uint32_t); 1822 esize -= sizeof(uint32_t); 1823 if (esize > 0 && !(offset % (4 * sizeof(uint32_t)))) 1824 len += snprintf(pbuffer+len, 1825 LPFC_QUE_ACC_BUF_SIZE-len, "\n"); 1826 } 1827 len += snprintf(pbuffer+len, LPFC_QUE_ACC_BUF_SIZE-len, "\n"); 1828 1829 return len; 1830 } 1831 1832 /** 1833 * lpfc_idiag_queacc_read - idiag debugfs read port queue 1834 * @file: The file pointer to read from. 1835 * @buf: The buffer to copy the data to. 1836 * @nbytes: The number of bytes to read. 1837 * @ppos: The position in the file to start reading from. 1838 * 1839 * Description: 1840 * This routine reads data from the @phba device queue memory according to the 1841 * idiag command, and copies to user @buf. Depending on the queue dump read 1842 * command setup, it does either a single queue entry read or browing through 1843 * all entries of the queue. 1844 * 1845 * Returns: 1846 * This function returns the amount of data that was read (this could be less 1847 * than @nbytes if the end of the file was reached) or a negative error value. 1848 **/ 1849 static ssize_t 1850 lpfc_idiag_queacc_read(struct file *file, char __user *buf, size_t nbytes, 1851 loff_t *ppos) 1852 { 1853 struct lpfc_debug *debug = file->private_data; 1854 uint32_t last_index, index, count; 1855 struct lpfc_queue *pque = NULL; 1856 char *pbuffer; 1857 int len = 0; 1858 1859 /* This is a user read operation */ 1860 debug->op = LPFC_IDIAG_OP_RD; 1861 1862 if (!debug->buffer) 1863 debug->buffer = kmalloc(LPFC_QUE_ACC_BUF_SIZE, GFP_KERNEL); 1864 if (!debug->buffer) 1865 return 0; 1866 pbuffer = debug->buffer; 1867 1868 if (*ppos) 1869 return 0; 1870 1871 if (idiag.cmd.opcode == LPFC_IDIAG_CMD_QUEACC_RD) { 1872 index = idiag.cmd.data[2]; 1873 count = idiag.cmd.data[3]; 1874 pque = (struct lpfc_queue *)idiag.ptr_private; 1875 } else 1876 return 0; 1877 1878 /* Browse the queue starting from index */ 1879 if (count == LPFC_QUE_ACC_BROWSE) 1880 goto que_browse; 1881 1882 /* Read a single entry from the queue */ 1883 len = lpfc_idiag_queacc_read_qe(pbuffer, len, pque, index); 1884 1885 return simple_read_from_buffer(buf, nbytes, ppos, pbuffer, len); 1886 1887 que_browse: 1888 1889 /* Browse all entries from the queue */ 1890 last_index = idiag.offset.last_rd; 1891 index = last_index; 1892 1893 while (len < LPFC_QUE_ACC_SIZE - pque->entry_size) { 1894 len = lpfc_idiag_queacc_read_qe(pbuffer, len, pque, index); 1895 index++; 1896 if (index > pque->entry_count - 1) 1897 break; 1898 } 1899 1900 /* Set up the offset for next portion of pci cfg read */ 1901 if (index > pque->entry_count - 1) 1902 index = 0; 1903 idiag.offset.last_rd = index; 1904 1905 return simple_read_from_buffer(buf, nbytes, ppos, pbuffer, len); 1906 } 1907 1908 /** 1909 * lpfc_idiag_queacc_write - Syntax check and set up idiag queacc commands 1910 * @file: The file pointer to read from. 1911 * @buf: The buffer to copy the user data from. 1912 * @nbytes: The number of bytes to get. 1913 * @ppos: The position in the file to start reading from. 1914 * 1915 * This routine get the debugfs idiag command struct from user space and then 1916 * perform the syntax check for port queue read (dump) or write (set) command 1917 * accordingly. In the case of port queue read command, it sets up the command 1918 * in the idiag command struct for the following debugfs read operation. In 1919 * the case of port queue write operation, it executes the write operation 1920 * into the port queue entry accordingly. 1921 * 1922 * It returns the @nbytges passing in from debugfs user space when successful. 1923 * In case of error conditions, it returns proper error code back to the user 1924 * space. 1925 **/ 1926 static ssize_t 1927 lpfc_idiag_queacc_write(struct file *file, const char __user *buf, 1928 size_t nbytes, loff_t *ppos) 1929 { 1930 struct lpfc_debug *debug = file->private_data; 1931 struct lpfc_hba *phba = (struct lpfc_hba *)debug->i_private; 1932 uint32_t qidx, quetp, queid, index, count, offset, value; 1933 uint32_t *pentry; 1934 struct lpfc_queue *pque; 1935 int rc; 1936 1937 /* This is a user write operation */ 1938 debug->op = LPFC_IDIAG_OP_WR; 1939 1940 rc = lpfc_idiag_cmd_get(buf, nbytes, &idiag.cmd); 1941 if (rc < 0) 1942 return rc; 1943 1944 /* Get and sanity check on command feilds */ 1945 quetp = idiag.cmd.data[0]; 1946 queid = idiag.cmd.data[1]; 1947 index = idiag.cmd.data[2]; 1948 count = idiag.cmd.data[3]; 1949 offset = idiag.cmd.data[4]; 1950 value = idiag.cmd.data[5]; 1951 1952 /* Sanity check on command line arguments */ 1953 if (idiag.cmd.opcode == LPFC_IDIAG_CMD_QUEACC_WR || 1954 idiag.cmd.opcode == LPFC_IDIAG_CMD_QUEACC_ST || 1955 idiag.cmd.opcode == LPFC_IDIAG_CMD_QUEACC_CL) { 1956 if (rc != LPFC_QUE_ACC_WR_CMD_ARG) 1957 goto error_out; 1958 if (count != 1) 1959 goto error_out; 1960 } else if (idiag.cmd.opcode == LPFC_IDIAG_CMD_QUEACC_RD) { 1961 if (rc != LPFC_QUE_ACC_RD_CMD_ARG) 1962 goto error_out; 1963 } else 1964 goto error_out; 1965 1966 switch (quetp) { 1967 case LPFC_IDIAG_EQ: 1968 /* Slow-path event queue */ 1969 if (phba->sli4_hba.sp_eq->queue_id == queid) { 1970 /* Sanity check */ 1971 rc = lpfc_idiag_que_param_check( 1972 phba->sli4_hba.sp_eq, index, count); 1973 if (rc) 1974 goto error_out; 1975 idiag.ptr_private = phba->sli4_hba.sp_eq; 1976 goto pass_check; 1977 } 1978 /* Fast-path event queue */ 1979 for (qidx = 0; qidx < phba->cfg_fcp_eq_count; qidx++) { 1980 if (phba->sli4_hba.fp_eq[qidx]->queue_id == queid) { 1981 /* Sanity check */ 1982 rc = lpfc_idiag_que_param_check( 1983 phba->sli4_hba.fp_eq[qidx], 1984 index, count); 1985 if (rc) 1986 goto error_out; 1987 idiag.ptr_private = phba->sli4_hba.fp_eq[qidx]; 1988 goto pass_check; 1989 } 1990 } 1991 goto error_out; 1992 break; 1993 case LPFC_IDIAG_CQ: 1994 /* MBX complete queue */ 1995 if (phba->sli4_hba.mbx_cq->queue_id == queid) { 1996 /* Sanity check */ 1997 rc = lpfc_idiag_que_param_check( 1998 phba->sli4_hba.mbx_cq, index, count); 1999 if (rc) 2000 goto error_out; 2001 idiag.ptr_private = phba->sli4_hba.mbx_cq; 2002 goto pass_check; 2003 } 2004 /* ELS complete queue */ 2005 if (phba->sli4_hba.els_cq->queue_id == queid) { 2006 /* Sanity check */ 2007 rc = lpfc_idiag_que_param_check( 2008 phba->sli4_hba.els_cq, index, count); 2009 if (rc) 2010 goto error_out; 2011 idiag.ptr_private = phba->sli4_hba.els_cq; 2012 goto pass_check; 2013 } 2014 /* FCP complete queue */ 2015 for (qidx = 0; qidx < phba->cfg_fcp_eq_count; qidx++) { 2016 if (phba->sli4_hba.fcp_cq[qidx]->queue_id == queid) { 2017 /* Sanity check */ 2018 rc = lpfc_idiag_que_param_check( 2019 phba->sli4_hba.fcp_cq[qidx], 2020 index, count); 2021 if (rc) 2022 goto error_out; 2023 idiag.ptr_private = 2024 phba->sli4_hba.fcp_cq[qidx]; 2025 goto pass_check; 2026 } 2027 } 2028 goto error_out; 2029 break; 2030 case LPFC_IDIAG_MQ: 2031 /* MBX work queue */ 2032 if (phba->sli4_hba.mbx_wq->queue_id == queid) { 2033 /* Sanity check */ 2034 rc = lpfc_idiag_que_param_check( 2035 phba->sli4_hba.mbx_wq, index, count); 2036 if (rc) 2037 goto error_out; 2038 idiag.ptr_private = phba->sli4_hba.mbx_wq; 2039 goto pass_check; 2040 } 2041 break; 2042 case LPFC_IDIAG_WQ: 2043 /* ELS work queue */ 2044 if (phba->sli4_hba.els_wq->queue_id == queid) { 2045 /* Sanity check */ 2046 rc = lpfc_idiag_que_param_check( 2047 phba->sli4_hba.els_wq, index, count); 2048 if (rc) 2049 goto error_out; 2050 idiag.ptr_private = phba->sli4_hba.els_wq; 2051 goto pass_check; 2052 } 2053 /* FCP work queue */ 2054 for (qidx = 0; qidx < phba->cfg_fcp_wq_count; qidx++) { 2055 if (phba->sli4_hba.fcp_wq[qidx]->queue_id == queid) { 2056 /* Sanity check */ 2057 rc = lpfc_idiag_que_param_check( 2058 phba->sli4_hba.fcp_wq[qidx], 2059 index, count); 2060 if (rc) 2061 goto error_out; 2062 idiag.ptr_private = 2063 phba->sli4_hba.fcp_wq[qidx]; 2064 goto pass_check; 2065 } 2066 } 2067 goto error_out; 2068 break; 2069 case LPFC_IDIAG_RQ: 2070 /* HDR queue */ 2071 if (phba->sli4_hba.hdr_rq->queue_id == queid) { 2072 /* Sanity check */ 2073 rc = lpfc_idiag_que_param_check( 2074 phba->sli4_hba.hdr_rq, index, count); 2075 if (rc) 2076 goto error_out; 2077 idiag.ptr_private = phba->sli4_hba.hdr_rq; 2078 goto pass_check; 2079 } 2080 /* DAT queue */ 2081 if (phba->sli4_hba.dat_rq->queue_id == queid) { 2082 /* Sanity check */ 2083 rc = lpfc_idiag_que_param_check( 2084 phba->sli4_hba.dat_rq, index, count); 2085 if (rc) 2086 goto error_out; 2087 idiag.ptr_private = phba->sli4_hba.dat_rq; 2088 goto pass_check; 2089 } 2090 goto error_out; 2091 break; 2092 default: 2093 goto error_out; 2094 break; 2095 } 2096 2097 pass_check: 2098 2099 if (idiag.cmd.opcode == LPFC_IDIAG_CMD_QUEACC_RD) { 2100 if (count == LPFC_QUE_ACC_BROWSE) 2101 idiag.offset.last_rd = index; 2102 } 2103 2104 if (idiag.cmd.opcode == LPFC_IDIAG_CMD_QUEACC_WR || 2105 idiag.cmd.opcode == LPFC_IDIAG_CMD_QUEACC_ST || 2106 idiag.cmd.opcode == LPFC_IDIAG_CMD_QUEACC_CL) { 2107 /* Additional sanity checks on write operation */ 2108 pque = (struct lpfc_queue *)idiag.ptr_private; 2109 if (offset > pque->entry_size/sizeof(uint32_t) - 1) 2110 goto error_out; 2111 pentry = pque->qe[index].address; 2112 pentry += offset; 2113 if (idiag.cmd.opcode == LPFC_IDIAG_CMD_QUEACC_WR) 2114 *pentry = value; 2115 if (idiag.cmd.opcode == LPFC_IDIAG_CMD_QUEACC_ST) 2116 *pentry |= value; 2117 if (idiag.cmd.opcode == LPFC_IDIAG_CMD_QUEACC_CL) 2118 *pentry &= ~value; 2119 } 2120 return nbytes; 2121 2122 error_out: 2123 /* Clean out command structure on command error out */ 2124 memset(&idiag, 0, sizeof(idiag)); 2125 return -EINVAL; 2126 } 2127 2128 /** 2129 * lpfc_idiag_drbacc_read_reg - idiag debugfs read a doorbell register 2130 * @phba: The pointer to hba structure. 2131 * @pbuffer: The pointer to the buffer to copy the data to. 2132 * @len: The lenght of bytes to copied. 2133 * @drbregid: The id to doorbell registers. 2134 * 2135 * Description: 2136 * This routine reads a doorbell register and copies its content to the 2137 * user buffer pointed to by @pbuffer. 2138 * 2139 * Returns: 2140 * This function returns the amount of data that was copied into @pbuffer. 2141 **/ 2142 static int 2143 lpfc_idiag_drbacc_read_reg(struct lpfc_hba *phba, char *pbuffer, 2144 int len, uint32_t drbregid) 2145 { 2146 2147 if (!pbuffer) 2148 return 0; 2149 2150 switch (drbregid) { 2151 case LPFC_DRB_EQCQ: 2152 len += snprintf(pbuffer+len, LPFC_DRB_ACC_BUF_SIZE-len, 2153 "EQCQ-DRB-REG: 0x%08x\n", 2154 readl(phba->sli4_hba.EQCQDBregaddr)); 2155 break; 2156 case LPFC_DRB_MQ: 2157 len += snprintf(pbuffer+len, LPFC_DRB_ACC_BUF_SIZE-len, 2158 "MQ-DRB-REG: 0x%08x\n", 2159 readl(phba->sli4_hba.MQDBregaddr)); 2160 break; 2161 case LPFC_DRB_WQ: 2162 len += snprintf(pbuffer+len, LPFC_DRB_ACC_BUF_SIZE-len, 2163 "WQ-DRB-REG: 0x%08x\n", 2164 readl(phba->sli4_hba.WQDBregaddr)); 2165 break; 2166 case LPFC_DRB_RQ: 2167 len += snprintf(pbuffer+len, LPFC_DRB_ACC_BUF_SIZE-len, 2168 "RQ-DRB-REG: 0x%08x\n", 2169 readl(phba->sli4_hba.RQDBregaddr)); 2170 break; 2171 default: 2172 break; 2173 } 2174 2175 return len; 2176 } 2177 2178 /** 2179 * lpfc_idiag_drbacc_read - idiag debugfs read port doorbell 2180 * @file: The file pointer to read from. 2181 * @buf: The buffer to copy the data to. 2182 * @nbytes: The number of bytes to read. 2183 * @ppos: The position in the file to start reading from. 2184 * 2185 * Description: 2186 * This routine reads data from the @phba device doorbell register according 2187 * to the idiag command, and copies to user @buf. Depending on the doorbell 2188 * register read command setup, it does either a single doorbell register 2189 * read or dump all doorbell registers. 2190 * 2191 * Returns: 2192 * This function returns the amount of data that was read (this could be less 2193 * than @nbytes if the end of the file was reached) or a negative error value. 2194 **/ 2195 static ssize_t 2196 lpfc_idiag_drbacc_read(struct file *file, char __user *buf, size_t nbytes, 2197 loff_t *ppos) 2198 { 2199 struct lpfc_debug *debug = file->private_data; 2200 struct lpfc_hba *phba = (struct lpfc_hba *)debug->i_private; 2201 uint32_t drb_reg_id, i; 2202 char *pbuffer; 2203 int len = 0; 2204 2205 /* This is a user read operation */ 2206 debug->op = LPFC_IDIAG_OP_RD; 2207 2208 if (!debug->buffer) 2209 debug->buffer = kmalloc(LPFC_DRB_ACC_BUF_SIZE, GFP_KERNEL); 2210 if (!debug->buffer) 2211 return 0; 2212 pbuffer = debug->buffer; 2213 2214 if (*ppos) 2215 return 0; 2216 2217 if (idiag.cmd.opcode == LPFC_IDIAG_CMD_DRBACC_RD) 2218 drb_reg_id = idiag.cmd.data[0]; 2219 else 2220 return 0; 2221 2222 if (drb_reg_id == LPFC_DRB_ACC_ALL) 2223 for (i = 1; i <= LPFC_DRB_MAX; i++) 2224 len = lpfc_idiag_drbacc_read_reg(phba, 2225 pbuffer, len, i); 2226 else 2227 len = lpfc_idiag_drbacc_read_reg(phba, 2228 pbuffer, len, drb_reg_id); 2229 2230 return simple_read_from_buffer(buf, nbytes, ppos, pbuffer, len); 2231 } 2232 2233 /** 2234 * lpfc_idiag_drbacc_write - Syntax check and set up idiag drbacc commands 2235 * @file: The file pointer to read from. 2236 * @buf: The buffer to copy the user data from. 2237 * @nbytes: The number of bytes to get. 2238 * @ppos: The position in the file to start reading from. 2239 * 2240 * This routine get the debugfs idiag command struct from user space and then 2241 * perform the syntax check for port doorbell register read (dump) or write 2242 * (set) command accordingly. In the case of port queue read command, it sets 2243 * up the command in the idiag command struct for the following debugfs read 2244 * operation. In the case of port doorbell register write operation, it 2245 * executes the write operation into the port doorbell register accordingly. 2246 * 2247 * It returns the @nbytges passing in from debugfs user space when successful. 2248 * In case of error conditions, it returns proper error code back to the user 2249 * space. 2250 **/ 2251 static ssize_t 2252 lpfc_idiag_drbacc_write(struct file *file, const char __user *buf, 2253 size_t nbytes, loff_t *ppos) 2254 { 2255 struct lpfc_debug *debug = file->private_data; 2256 struct lpfc_hba *phba = (struct lpfc_hba *)debug->i_private; 2257 uint32_t drb_reg_id, value, reg_val; 2258 void __iomem *drb_reg; 2259 int rc; 2260 2261 /* This is a user write operation */ 2262 debug->op = LPFC_IDIAG_OP_WR; 2263 2264 rc = lpfc_idiag_cmd_get(buf, nbytes, &idiag.cmd); 2265 if (rc < 0) 2266 return rc; 2267 2268 /* Sanity check on command line arguments */ 2269 drb_reg_id = idiag.cmd.data[0]; 2270 value = idiag.cmd.data[1]; 2271 2272 if (idiag.cmd.opcode == LPFC_IDIAG_CMD_DRBACC_WR || 2273 idiag.cmd.opcode == LPFC_IDIAG_CMD_DRBACC_ST || 2274 idiag.cmd.opcode == LPFC_IDIAG_CMD_DRBACC_CL) { 2275 if (rc != LPFC_DRB_ACC_WR_CMD_ARG) 2276 goto error_out; 2277 if (drb_reg_id > LPFC_DRB_MAX) 2278 goto error_out; 2279 } else if (idiag.cmd.opcode == LPFC_IDIAG_CMD_DRBACC_RD) { 2280 if (rc != LPFC_DRB_ACC_RD_CMD_ARG) 2281 goto error_out; 2282 if ((drb_reg_id > LPFC_DRB_MAX) && 2283 (drb_reg_id != LPFC_DRB_ACC_ALL)) 2284 goto error_out; 2285 } else 2286 goto error_out; 2287 2288 /* Perform the write access operation */ 2289 if (idiag.cmd.opcode == LPFC_IDIAG_CMD_DRBACC_WR || 2290 idiag.cmd.opcode == LPFC_IDIAG_CMD_DRBACC_ST || 2291 idiag.cmd.opcode == LPFC_IDIAG_CMD_DRBACC_CL) { 2292 switch (drb_reg_id) { 2293 case LPFC_DRB_EQCQ: 2294 drb_reg = phba->sli4_hba.EQCQDBregaddr; 2295 break; 2296 case LPFC_DRB_MQ: 2297 drb_reg = phba->sli4_hba.MQDBregaddr; 2298 break; 2299 case LPFC_DRB_WQ: 2300 drb_reg = phba->sli4_hba.WQDBregaddr; 2301 break; 2302 case LPFC_DRB_RQ: 2303 drb_reg = phba->sli4_hba.RQDBregaddr; 2304 break; 2305 default: 2306 goto error_out; 2307 } 2308 2309 if (idiag.cmd.opcode == LPFC_IDIAG_CMD_DRBACC_WR) 2310 reg_val = value; 2311 if (idiag.cmd.opcode == LPFC_IDIAG_CMD_DRBACC_ST) { 2312 reg_val = readl(drb_reg); 2313 reg_val |= value; 2314 } 2315 if (idiag.cmd.opcode == LPFC_IDIAG_CMD_DRBACC_CL) { 2316 reg_val = readl(drb_reg); 2317 reg_val &= ~value; 2318 } 2319 writel(reg_val, drb_reg); 2320 readl(drb_reg); /* flush */ 2321 } 2322 return nbytes; 2323 2324 error_out: 2325 /* Clean out command structure on command error out */ 2326 memset(&idiag, 0, sizeof(idiag)); 2327 return -EINVAL; 2328 } 2329 2330 #undef lpfc_debugfs_op_disc_trc 2331 static const struct file_operations lpfc_debugfs_op_disc_trc = { 2332 .owner = THIS_MODULE, 2333 .open = lpfc_debugfs_disc_trc_open, 2334 .llseek = lpfc_debugfs_lseek, 2335 .read = lpfc_debugfs_read, 2336 .release = lpfc_debugfs_release, 2337 }; 2338 2339 #undef lpfc_debugfs_op_nodelist 2340 static const struct file_operations lpfc_debugfs_op_nodelist = { 2341 .owner = THIS_MODULE, 2342 .open = lpfc_debugfs_nodelist_open, 2343 .llseek = lpfc_debugfs_lseek, 2344 .read = lpfc_debugfs_read, 2345 .release = lpfc_debugfs_release, 2346 }; 2347 2348 #undef lpfc_debugfs_op_hbqinfo 2349 static const struct file_operations lpfc_debugfs_op_hbqinfo = { 2350 .owner = THIS_MODULE, 2351 .open = lpfc_debugfs_hbqinfo_open, 2352 .llseek = lpfc_debugfs_lseek, 2353 .read = lpfc_debugfs_read, 2354 .release = lpfc_debugfs_release, 2355 }; 2356 2357 #undef lpfc_debugfs_op_dumpHBASlim 2358 static const struct file_operations lpfc_debugfs_op_dumpHBASlim = { 2359 .owner = THIS_MODULE, 2360 .open = lpfc_debugfs_dumpHBASlim_open, 2361 .llseek = lpfc_debugfs_lseek, 2362 .read = lpfc_debugfs_read, 2363 .release = lpfc_debugfs_release, 2364 }; 2365 2366 #undef lpfc_debugfs_op_dumpHostSlim 2367 static const struct file_operations lpfc_debugfs_op_dumpHostSlim = { 2368 .owner = THIS_MODULE, 2369 .open = lpfc_debugfs_dumpHostSlim_open, 2370 .llseek = lpfc_debugfs_lseek, 2371 .read = lpfc_debugfs_read, 2372 .release = lpfc_debugfs_release, 2373 }; 2374 2375 #undef lpfc_debugfs_op_dumpData 2376 static const struct file_operations lpfc_debugfs_op_dumpData = { 2377 .owner = THIS_MODULE, 2378 .open = lpfc_debugfs_dumpData_open, 2379 .llseek = lpfc_debugfs_lseek, 2380 .read = lpfc_debugfs_read, 2381 .write = lpfc_debugfs_dumpDataDif_write, 2382 .release = lpfc_debugfs_dumpDataDif_release, 2383 }; 2384 2385 #undef lpfc_debugfs_op_dumpDif 2386 static const struct file_operations lpfc_debugfs_op_dumpDif = { 2387 .owner = THIS_MODULE, 2388 .open = lpfc_debugfs_dumpDif_open, 2389 .llseek = lpfc_debugfs_lseek, 2390 .read = lpfc_debugfs_read, 2391 .write = lpfc_debugfs_dumpDataDif_write, 2392 .release = lpfc_debugfs_dumpDataDif_release, 2393 }; 2394 2395 #undef lpfc_debugfs_op_slow_ring_trc 2396 static const struct file_operations lpfc_debugfs_op_slow_ring_trc = { 2397 .owner = THIS_MODULE, 2398 .open = lpfc_debugfs_slow_ring_trc_open, 2399 .llseek = lpfc_debugfs_lseek, 2400 .read = lpfc_debugfs_read, 2401 .release = lpfc_debugfs_release, 2402 }; 2403 2404 static struct dentry *lpfc_debugfs_root = NULL; 2405 static atomic_t lpfc_debugfs_hba_count; 2406 2407 /* 2408 * File operations for the iDiag debugfs 2409 */ 2410 #undef lpfc_idiag_op_pciCfg 2411 static const struct file_operations lpfc_idiag_op_pciCfg = { 2412 .owner = THIS_MODULE, 2413 .open = lpfc_idiag_open, 2414 .llseek = lpfc_debugfs_lseek, 2415 .read = lpfc_idiag_pcicfg_read, 2416 .write = lpfc_idiag_pcicfg_write, 2417 .release = lpfc_idiag_cmd_release, 2418 }; 2419 2420 #undef lpfc_idiag_op_queInfo 2421 static const struct file_operations lpfc_idiag_op_queInfo = { 2422 .owner = THIS_MODULE, 2423 .open = lpfc_idiag_open, 2424 .read = lpfc_idiag_queinfo_read, 2425 .release = lpfc_idiag_release, 2426 }; 2427 2428 #undef lpfc_idiag_op_queacc 2429 static const struct file_operations lpfc_idiag_op_queAcc = { 2430 .owner = THIS_MODULE, 2431 .open = lpfc_idiag_open, 2432 .llseek = lpfc_debugfs_lseek, 2433 .read = lpfc_idiag_queacc_read, 2434 .write = lpfc_idiag_queacc_write, 2435 .release = lpfc_idiag_cmd_release, 2436 }; 2437 2438 #undef lpfc_idiag_op_drbacc 2439 static const struct file_operations lpfc_idiag_op_drbAcc = { 2440 .owner = THIS_MODULE, 2441 .open = lpfc_idiag_open, 2442 .llseek = lpfc_debugfs_lseek, 2443 .read = lpfc_idiag_drbacc_read, 2444 .write = lpfc_idiag_drbacc_write, 2445 .release = lpfc_idiag_cmd_release, 2446 }; 2447 2448 #endif 2449 2450 /** 2451 * lpfc_debugfs_initialize - Initialize debugfs for a vport 2452 * @vport: The vport pointer to initialize. 2453 * 2454 * Description: 2455 * When Debugfs is configured this routine sets up the lpfc debugfs file system. 2456 * If not already created, this routine will create the lpfc directory, and 2457 * lpfcX directory (for this HBA), and vportX directory for this vport. It will 2458 * also create each file used to access lpfc specific debugfs information. 2459 **/ 2460 inline void 2461 lpfc_debugfs_initialize(struct lpfc_vport *vport) 2462 { 2463 #ifdef CONFIG_SCSI_LPFC_DEBUG_FS 2464 struct lpfc_hba *phba = vport->phba; 2465 char name[64]; 2466 uint32_t num, i; 2467 2468 if (!lpfc_debugfs_enable) 2469 return; 2470 2471 /* Setup lpfc root directory */ 2472 if (!lpfc_debugfs_root) { 2473 lpfc_debugfs_root = debugfs_create_dir("lpfc", NULL); 2474 atomic_set(&lpfc_debugfs_hba_count, 0); 2475 if (!lpfc_debugfs_root) { 2476 lpfc_printf_vlog(vport, KERN_ERR, LOG_INIT, 2477 "0408 Cannot create debugfs root\n"); 2478 goto debug_failed; 2479 } 2480 } 2481 if (!lpfc_debugfs_start_time) 2482 lpfc_debugfs_start_time = jiffies; 2483 2484 /* Setup funcX directory for specific HBA PCI function */ 2485 snprintf(name, sizeof(name), "fn%d", phba->brd_no); 2486 if (!phba->hba_debugfs_root) { 2487 phba->hba_debugfs_root = 2488 debugfs_create_dir(name, lpfc_debugfs_root); 2489 if (!phba->hba_debugfs_root) { 2490 lpfc_printf_vlog(vport, KERN_ERR, LOG_INIT, 2491 "0412 Cannot create debugfs hba\n"); 2492 goto debug_failed; 2493 } 2494 atomic_inc(&lpfc_debugfs_hba_count); 2495 atomic_set(&phba->debugfs_vport_count, 0); 2496 2497 /* Setup hbqinfo */ 2498 snprintf(name, sizeof(name), "hbqinfo"); 2499 phba->debug_hbqinfo = 2500 debugfs_create_file(name, S_IFREG|S_IRUGO|S_IWUSR, 2501 phba->hba_debugfs_root, 2502 phba, &lpfc_debugfs_op_hbqinfo); 2503 if (!phba->debug_hbqinfo) { 2504 lpfc_printf_vlog(vport, KERN_ERR, LOG_INIT, 2505 "0411 Cannot create debugfs hbqinfo\n"); 2506 goto debug_failed; 2507 } 2508 2509 /* Setup dumpHBASlim */ 2510 if (phba->sli_rev < LPFC_SLI_REV4) { 2511 snprintf(name, sizeof(name), "dumpHBASlim"); 2512 phba->debug_dumpHBASlim = 2513 debugfs_create_file(name, 2514 S_IFREG|S_IRUGO|S_IWUSR, 2515 phba->hba_debugfs_root, 2516 phba, &lpfc_debugfs_op_dumpHBASlim); 2517 if (!phba->debug_dumpHBASlim) { 2518 lpfc_printf_vlog(vport, KERN_ERR, LOG_INIT, 2519 "0413 Cannot create debugfs " 2520 "dumpHBASlim\n"); 2521 goto debug_failed; 2522 } 2523 } else 2524 phba->debug_dumpHBASlim = NULL; 2525 2526 /* Setup dumpHostSlim */ 2527 if (phba->sli_rev < LPFC_SLI_REV4) { 2528 snprintf(name, sizeof(name), "dumpHostSlim"); 2529 phba->debug_dumpHostSlim = 2530 debugfs_create_file(name, 2531 S_IFREG|S_IRUGO|S_IWUSR, 2532 phba->hba_debugfs_root, 2533 phba, &lpfc_debugfs_op_dumpHostSlim); 2534 if (!phba->debug_dumpHostSlim) { 2535 lpfc_printf_vlog(vport, KERN_ERR, LOG_INIT, 2536 "0414 Cannot create debugfs " 2537 "dumpHostSlim\n"); 2538 goto debug_failed; 2539 } 2540 } else 2541 phba->debug_dumpHBASlim = NULL; 2542 2543 /* Setup dumpData */ 2544 snprintf(name, sizeof(name), "dumpData"); 2545 phba->debug_dumpData = 2546 debugfs_create_file(name, S_IFREG|S_IRUGO|S_IWUSR, 2547 phba->hba_debugfs_root, 2548 phba, &lpfc_debugfs_op_dumpData); 2549 if (!phba->debug_dumpData) { 2550 lpfc_printf_vlog(vport, KERN_ERR, LOG_INIT, 2551 "0800 Cannot create debugfs dumpData\n"); 2552 goto debug_failed; 2553 } 2554 2555 /* Setup dumpDif */ 2556 snprintf(name, sizeof(name), "dumpDif"); 2557 phba->debug_dumpDif = 2558 debugfs_create_file(name, S_IFREG|S_IRUGO|S_IWUSR, 2559 phba->hba_debugfs_root, 2560 phba, &lpfc_debugfs_op_dumpDif); 2561 if (!phba->debug_dumpDif) { 2562 lpfc_printf_vlog(vport, KERN_ERR, LOG_INIT, 2563 "0801 Cannot create debugfs dumpDif\n"); 2564 goto debug_failed; 2565 } 2566 2567 /* Setup slow ring trace */ 2568 if (lpfc_debugfs_max_slow_ring_trc) { 2569 num = lpfc_debugfs_max_slow_ring_trc - 1; 2570 if (num & lpfc_debugfs_max_slow_ring_trc) { 2571 /* Change to be a power of 2 */ 2572 num = lpfc_debugfs_max_slow_ring_trc; 2573 i = 0; 2574 while (num > 1) { 2575 num = num >> 1; 2576 i++; 2577 } 2578 lpfc_debugfs_max_slow_ring_trc = (1 << i); 2579 printk(KERN_ERR 2580 "lpfc_debugfs_max_disc_trc changed to " 2581 "%d\n", lpfc_debugfs_max_disc_trc); 2582 } 2583 } 2584 2585 snprintf(name, sizeof(name), "slow_ring_trace"); 2586 phba->debug_slow_ring_trc = 2587 debugfs_create_file(name, S_IFREG|S_IRUGO|S_IWUSR, 2588 phba->hba_debugfs_root, 2589 phba, &lpfc_debugfs_op_slow_ring_trc); 2590 if (!phba->debug_slow_ring_trc) { 2591 lpfc_printf_vlog(vport, KERN_ERR, LOG_INIT, 2592 "0415 Cannot create debugfs " 2593 "slow_ring_trace\n"); 2594 goto debug_failed; 2595 } 2596 if (!phba->slow_ring_trc) { 2597 phba->slow_ring_trc = kmalloc( 2598 (sizeof(struct lpfc_debugfs_trc) * 2599 lpfc_debugfs_max_slow_ring_trc), 2600 GFP_KERNEL); 2601 if (!phba->slow_ring_trc) { 2602 lpfc_printf_vlog(vport, KERN_ERR, LOG_INIT, 2603 "0416 Cannot create debugfs " 2604 "slow_ring buffer\n"); 2605 goto debug_failed; 2606 } 2607 atomic_set(&phba->slow_ring_trc_cnt, 0); 2608 memset(phba->slow_ring_trc, 0, 2609 (sizeof(struct lpfc_debugfs_trc) * 2610 lpfc_debugfs_max_slow_ring_trc)); 2611 } 2612 } 2613 2614 snprintf(name, sizeof(name), "vport%d", vport->vpi); 2615 if (!vport->vport_debugfs_root) { 2616 vport->vport_debugfs_root = 2617 debugfs_create_dir(name, phba->hba_debugfs_root); 2618 if (!vport->vport_debugfs_root) { 2619 lpfc_printf_vlog(vport, KERN_ERR, LOG_INIT, 2620 "0417 Can't create debugfs\n"); 2621 goto debug_failed; 2622 } 2623 atomic_inc(&phba->debugfs_vport_count); 2624 } 2625 2626 if (lpfc_debugfs_max_disc_trc) { 2627 num = lpfc_debugfs_max_disc_trc - 1; 2628 if (num & lpfc_debugfs_max_disc_trc) { 2629 /* Change to be a power of 2 */ 2630 num = lpfc_debugfs_max_disc_trc; 2631 i = 0; 2632 while (num > 1) { 2633 num = num >> 1; 2634 i++; 2635 } 2636 lpfc_debugfs_max_disc_trc = (1 << i); 2637 printk(KERN_ERR 2638 "lpfc_debugfs_max_disc_trc changed to %d\n", 2639 lpfc_debugfs_max_disc_trc); 2640 } 2641 } 2642 2643 vport->disc_trc = kzalloc( 2644 (sizeof(struct lpfc_debugfs_trc) * lpfc_debugfs_max_disc_trc), 2645 GFP_KERNEL); 2646 2647 if (!vport->disc_trc) { 2648 lpfc_printf_vlog(vport, KERN_ERR, LOG_INIT, 2649 "0418 Cannot create debugfs disc trace " 2650 "buffer\n"); 2651 goto debug_failed; 2652 } 2653 atomic_set(&vport->disc_trc_cnt, 0); 2654 2655 snprintf(name, sizeof(name), "discovery_trace"); 2656 vport->debug_disc_trc = 2657 debugfs_create_file(name, S_IFREG|S_IRUGO|S_IWUSR, 2658 vport->vport_debugfs_root, 2659 vport, &lpfc_debugfs_op_disc_trc); 2660 if (!vport->debug_disc_trc) { 2661 lpfc_printf_vlog(vport, KERN_ERR, LOG_INIT, 2662 "0419 Cannot create debugfs " 2663 "discovery_trace\n"); 2664 goto debug_failed; 2665 } 2666 snprintf(name, sizeof(name), "nodelist"); 2667 vport->debug_nodelist = 2668 debugfs_create_file(name, S_IFREG|S_IRUGO|S_IWUSR, 2669 vport->vport_debugfs_root, 2670 vport, &lpfc_debugfs_op_nodelist); 2671 if (!vport->debug_nodelist) { 2672 lpfc_printf_vlog(vport, KERN_ERR, LOG_INIT, 2673 "0409 Can't create debugfs nodelist\n"); 2674 goto debug_failed; 2675 } 2676 2677 /* 2678 * iDiag debugfs root entry points for SLI4 device only 2679 */ 2680 if (phba->sli_rev < LPFC_SLI_REV4) 2681 goto debug_failed; 2682 2683 snprintf(name, sizeof(name), "iDiag"); 2684 if (!phba->idiag_root) { 2685 phba->idiag_root = 2686 debugfs_create_dir(name, phba->hba_debugfs_root); 2687 if (!phba->idiag_root) { 2688 lpfc_printf_vlog(vport, KERN_ERR, LOG_INIT, 2689 "2922 Can't create idiag debugfs\n"); 2690 goto debug_failed; 2691 } 2692 /* Initialize iDiag data structure */ 2693 memset(&idiag, 0, sizeof(idiag)); 2694 } 2695 2696 /* iDiag read PCI config space */ 2697 snprintf(name, sizeof(name), "pciCfg"); 2698 if (!phba->idiag_pci_cfg) { 2699 phba->idiag_pci_cfg = 2700 debugfs_create_file(name, S_IFREG|S_IRUGO|S_IWUSR, 2701 phba->idiag_root, phba, &lpfc_idiag_op_pciCfg); 2702 if (!phba->idiag_pci_cfg) { 2703 lpfc_printf_vlog(vport, KERN_ERR, LOG_INIT, 2704 "2923 Can't create idiag debugfs\n"); 2705 goto debug_failed; 2706 } 2707 idiag.offset.last_rd = 0; 2708 } 2709 2710 /* iDiag get PCI function queue information */ 2711 snprintf(name, sizeof(name), "queInfo"); 2712 if (!phba->idiag_que_info) { 2713 phba->idiag_que_info = 2714 debugfs_create_file(name, S_IFREG|S_IRUGO, 2715 phba->idiag_root, phba, &lpfc_idiag_op_queInfo); 2716 if (!phba->idiag_que_info) { 2717 lpfc_printf_vlog(vport, KERN_ERR, LOG_INIT, 2718 "2924 Can't create idiag debugfs\n"); 2719 goto debug_failed; 2720 } 2721 } 2722 2723 /* iDiag access PCI function queue */ 2724 snprintf(name, sizeof(name), "queAcc"); 2725 if (!phba->idiag_que_acc) { 2726 phba->idiag_que_acc = 2727 debugfs_create_file(name, S_IFREG|S_IRUGO|S_IWUSR, 2728 phba->idiag_root, phba, &lpfc_idiag_op_queAcc); 2729 if (!phba->idiag_que_acc) { 2730 lpfc_printf_vlog(vport, KERN_ERR, LOG_INIT, 2731 "2926 Can't create idiag debugfs\n"); 2732 goto debug_failed; 2733 } 2734 } 2735 2736 /* iDiag access PCI function doorbell registers */ 2737 snprintf(name, sizeof(name), "drbAcc"); 2738 if (!phba->idiag_drb_acc) { 2739 phba->idiag_drb_acc = 2740 debugfs_create_file(name, S_IFREG|S_IRUGO|S_IWUSR, 2741 phba->idiag_root, phba, &lpfc_idiag_op_drbAcc); 2742 if (!phba->idiag_drb_acc) { 2743 lpfc_printf_vlog(vport, KERN_ERR, LOG_INIT, 2744 "2927 Can't create idiag debugfs\n"); 2745 goto debug_failed; 2746 } 2747 } 2748 2749 debug_failed: 2750 return; 2751 #endif 2752 } 2753 2754 /** 2755 * lpfc_debugfs_terminate - Tear down debugfs infrastructure for this vport 2756 * @vport: The vport pointer to remove from debugfs. 2757 * 2758 * Description: 2759 * When Debugfs is configured this routine removes debugfs file system elements 2760 * that are specific to this vport. It also checks to see if there are any 2761 * users left for the debugfs directories associated with the HBA and driver. If 2762 * this is the last user of the HBA directory or driver directory then it will 2763 * remove those from the debugfs infrastructure as well. 2764 **/ 2765 inline void 2766 lpfc_debugfs_terminate(struct lpfc_vport *vport) 2767 { 2768 #ifdef CONFIG_SCSI_LPFC_DEBUG_FS 2769 struct lpfc_hba *phba = vport->phba; 2770 2771 if (vport->disc_trc) { 2772 kfree(vport->disc_trc); 2773 vport->disc_trc = NULL; 2774 } 2775 if (vport->debug_disc_trc) { 2776 debugfs_remove(vport->debug_disc_trc); /* discovery_trace */ 2777 vport->debug_disc_trc = NULL; 2778 } 2779 if (vport->debug_nodelist) { 2780 debugfs_remove(vport->debug_nodelist); /* nodelist */ 2781 vport->debug_nodelist = NULL; 2782 } 2783 2784 if (vport->vport_debugfs_root) { 2785 debugfs_remove(vport->vport_debugfs_root); /* vportX */ 2786 vport->vport_debugfs_root = NULL; 2787 atomic_dec(&phba->debugfs_vport_count); 2788 } 2789 if (atomic_read(&phba->debugfs_vport_count) == 0) { 2790 2791 if (phba->debug_hbqinfo) { 2792 debugfs_remove(phba->debug_hbqinfo); /* hbqinfo */ 2793 phba->debug_hbqinfo = NULL; 2794 } 2795 if (phba->debug_dumpHBASlim) { 2796 debugfs_remove(phba->debug_dumpHBASlim); /* HBASlim */ 2797 phba->debug_dumpHBASlim = NULL; 2798 } 2799 if (phba->debug_dumpHostSlim) { 2800 debugfs_remove(phba->debug_dumpHostSlim); /* HostSlim */ 2801 phba->debug_dumpHostSlim = NULL; 2802 } 2803 if (phba->debug_dumpData) { 2804 debugfs_remove(phba->debug_dumpData); /* dumpData */ 2805 phba->debug_dumpData = NULL; 2806 } 2807 2808 if (phba->debug_dumpDif) { 2809 debugfs_remove(phba->debug_dumpDif); /* dumpDif */ 2810 phba->debug_dumpDif = NULL; 2811 } 2812 2813 if (phba->slow_ring_trc) { 2814 kfree(phba->slow_ring_trc); 2815 phba->slow_ring_trc = NULL; 2816 } 2817 if (phba->debug_slow_ring_trc) { 2818 /* slow_ring_trace */ 2819 debugfs_remove(phba->debug_slow_ring_trc); 2820 phba->debug_slow_ring_trc = NULL; 2821 } 2822 2823 /* 2824 * iDiag release 2825 */ 2826 if (phba->sli_rev == LPFC_SLI_REV4) { 2827 if (phba->idiag_drb_acc) { 2828 /* iDiag drbAcc */ 2829 debugfs_remove(phba->idiag_drb_acc); 2830 phba->idiag_drb_acc = NULL; 2831 } 2832 if (phba->idiag_que_acc) { 2833 /* iDiag queAcc */ 2834 debugfs_remove(phba->idiag_que_acc); 2835 phba->idiag_que_acc = NULL; 2836 } 2837 if (phba->idiag_que_info) { 2838 /* iDiag queInfo */ 2839 debugfs_remove(phba->idiag_que_info); 2840 phba->idiag_que_info = NULL; 2841 } 2842 if (phba->idiag_pci_cfg) { 2843 /* iDiag pciCfg */ 2844 debugfs_remove(phba->idiag_pci_cfg); 2845 phba->idiag_pci_cfg = NULL; 2846 } 2847 2848 /* Finally remove the iDiag debugfs root */ 2849 if (phba->idiag_root) { 2850 /* iDiag root */ 2851 debugfs_remove(phba->idiag_root); 2852 phba->idiag_root = NULL; 2853 } 2854 } 2855 2856 if (phba->hba_debugfs_root) { 2857 debugfs_remove(phba->hba_debugfs_root); /* fnX */ 2858 phba->hba_debugfs_root = NULL; 2859 atomic_dec(&lpfc_debugfs_hba_count); 2860 } 2861 2862 if (atomic_read(&lpfc_debugfs_hba_count) == 0) { 2863 debugfs_remove(lpfc_debugfs_root); /* lpfc */ 2864 lpfc_debugfs_root = NULL; 2865 } 2866 } 2867 #endif 2868 return; 2869 } 2870