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 fcp_qidx = 0; 1669 do { 1670 len += snprintf(pbuffer+len, LPFC_QUE_INFO_GET_BUF_SIZE-len, 1671 "Associated EQID[%02d]:\n", 1672 phba->sli4_hba.fcp_cq[fcp_qidx]->assoc_qid); 1673 len += snprintf(pbuffer+len, LPFC_QUE_INFO_GET_BUF_SIZE-len, 1674 "\tCQID[%02d], " 1675 "QE-COUNT[%04d], QE-SIZE[%04d], " 1676 "HOST-INDEX[%04d], PORT-INDEX[%04d]\n", 1677 phba->sli4_hba.fcp_cq[fcp_qidx]->queue_id, 1678 phba->sli4_hba.fcp_cq[fcp_qidx]->entry_count, 1679 phba->sli4_hba.fcp_cq[fcp_qidx]->entry_size, 1680 phba->sli4_hba.fcp_cq[fcp_qidx]->host_index, 1681 phba->sli4_hba.fcp_cq[fcp_qidx]->hba_index); 1682 } while (++fcp_qidx < phba->cfg_fcp_eq_count); 1683 len += snprintf(pbuffer+len, LPFC_QUE_INFO_GET_BUF_SIZE-len, "\n"); 1684 1685 /* Get mailbox queue information */ 1686 len += snprintf(pbuffer+len, LPFC_QUE_INFO_GET_BUF_SIZE-len, 1687 "Slow-path MBX MQ information:\n"); 1688 len += snprintf(pbuffer+len, LPFC_QUE_INFO_GET_BUF_SIZE-len, 1689 "Associated CQID[%02d]:\n", 1690 phba->sli4_hba.mbx_wq->assoc_qid); 1691 len += snprintf(pbuffer+len, LPFC_QUE_INFO_GET_BUF_SIZE-len, 1692 "\tWQID[%02d], " 1693 "QE-COUNT[%04d], QE-SIZE[%04d], " 1694 "HOST-INDEX[%04d], PORT-INDEX[%04d]\n\n", 1695 phba->sli4_hba.mbx_wq->queue_id, 1696 phba->sli4_hba.mbx_wq->entry_count, 1697 phba->sli4_hba.mbx_wq->entry_size, 1698 phba->sli4_hba.mbx_wq->host_index, 1699 phba->sli4_hba.mbx_wq->hba_index); 1700 1701 /* Get slow-path work queue information */ 1702 len += snprintf(pbuffer+len, LPFC_QUE_INFO_GET_BUF_SIZE-len, 1703 "Slow-path ELS WQ information:\n"); 1704 len += snprintf(pbuffer+len, LPFC_QUE_INFO_GET_BUF_SIZE-len, 1705 "Associated CQID[%02d]:\n", 1706 phba->sli4_hba.els_wq->assoc_qid); 1707 len += snprintf(pbuffer+len, LPFC_QUE_INFO_GET_BUF_SIZE-len, 1708 "\tWQID[%02d], " 1709 "QE-COUNT[%04d], QE-SIZE[%04d], " 1710 "HOST-INDEX[%04d], PORT-INDEX[%04d]\n\n", 1711 phba->sli4_hba.els_wq->queue_id, 1712 phba->sli4_hba.els_wq->entry_count, 1713 phba->sli4_hba.els_wq->entry_size, 1714 phba->sli4_hba.els_wq->host_index, 1715 phba->sli4_hba.els_wq->hba_index); 1716 1717 /* Get fast-path work queue information */ 1718 len += snprintf(pbuffer+len, LPFC_QUE_INFO_GET_BUF_SIZE-len, 1719 "Fast-path FCP WQ information:\n"); 1720 for (fcp_qidx = 0; fcp_qidx < phba->cfg_fcp_wq_count; fcp_qidx++) { 1721 len += snprintf(pbuffer+len, LPFC_QUE_INFO_GET_BUF_SIZE-len, 1722 "Associated CQID[%02d]:\n", 1723 phba->sli4_hba.fcp_wq[fcp_qidx]->assoc_qid); 1724 len += snprintf(pbuffer+len, LPFC_QUE_INFO_GET_BUF_SIZE-len, 1725 "\tWQID[%02d], " 1726 "QE-COUNT[%04d], WQE-SIZE[%04d], " 1727 "HOST-INDEX[%04d], PORT-INDEX[%04d]\n", 1728 phba->sli4_hba.fcp_wq[fcp_qidx]->queue_id, 1729 phba->sli4_hba.fcp_wq[fcp_qidx]->entry_count, 1730 phba->sli4_hba.fcp_wq[fcp_qidx]->entry_size, 1731 phba->sli4_hba.fcp_wq[fcp_qidx]->host_index, 1732 phba->sli4_hba.fcp_wq[fcp_qidx]->hba_index); 1733 } 1734 len += snprintf(pbuffer+len, LPFC_QUE_INFO_GET_BUF_SIZE-len, "\n"); 1735 1736 /* Get receive queue information */ 1737 len += snprintf(pbuffer+len, LPFC_QUE_INFO_GET_BUF_SIZE-len, 1738 "Slow-path RQ information:\n"); 1739 len += snprintf(pbuffer+len, LPFC_QUE_INFO_GET_BUF_SIZE-len, 1740 "Associated CQID[%02d]:\n", 1741 phba->sli4_hba.hdr_rq->assoc_qid); 1742 len += snprintf(pbuffer+len, LPFC_QUE_INFO_GET_BUF_SIZE-len, 1743 "\tHQID[%02d], " 1744 "QE-COUNT[%04d], QE-SIZE[%04d], " 1745 "HOST-INDEX[%04d], PORT-INDEX[%04d]\n", 1746 phba->sli4_hba.hdr_rq->queue_id, 1747 phba->sli4_hba.hdr_rq->entry_count, 1748 phba->sli4_hba.hdr_rq->entry_size, 1749 phba->sli4_hba.hdr_rq->host_index, 1750 phba->sli4_hba.hdr_rq->hba_index); 1751 len += snprintf(pbuffer+len, LPFC_QUE_INFO_GET_BUF_SIZE-len, 1752 "\tDQID[%02d], " 1753 "QE-COUNT[%04d], QE-SIZE[%04d], " 1754 "HOST-INDEX[%04d], PORT-INDEX[%04d]\n", 1755 phba->sli4_hba.dat_rq->queue_id, 1756 phba->sli4_hba.dat_rq->entry_count, 1757 phba->sli4_hba.dat_rq->entry_size, 1758 phba->sli4_hba.dat_rq->host_index, 1759 phba->sli4_hba.dat_rq->hba_index); 1760 1761 return simple_read_from_buffer(buf, nbytes, ppos, pbuffer, len); 1762 } 1763 1764 /** 1765 * lpfc_idiag_que_param_check - queue access command parameter sanity check 1766 * @q: The pointer to queue structure. 1767 * @index: The index into a queue entry. 1768 * @count: The number of queue entries to access. 1769 * 1770 * Description: 1771 * The routine performs sanity check on device queue access method commands. 1772 * 1773 * Returns: 1774 * This function returns -EINVAL when fails the sanity check, otherwise, it 1775 * returns 0. 1776 **/ 1777 static int 1778 lpfc_idiag_que_param_check(struct lpfc_queue *q, int index, int count) 1779 { 1780 /* Only support single entry read or browsing */ 1781 if ((count != 1) && (count != LPFC_QUE_ACC_BROWSE)) 1782 return -EINVAL; 1783 if (index > q->entry_count - 1) 1784 return -EINVAL; 1785 return 0; 1786 } 1787 1788 /** 1789 * lpfc_idiag_queacc_read_qe - read a single entry from the given queue index 1790 * @pbuffer: The pointer to buffer to copy the read data into. 1791 * @pque: The pointer to the queue to be read. 1792 * @index: The index into the queue entry. 1793 * 1794 * Description: 1795 * This routine reads out a single entry from the given queue's index location 1796 * and copies it into the buffer provided. 1797 * 1798 * Returns: 1799 * This function returns 0 when it fails, otherwise, it returns the length of 1800 * the data read into the buffer provided. 1801 **/ 1802 static int 1803 lpfc_idiag_queacc_read_qe(char *pbuffer, int len, struct lpfc_queue *pque, 1804 uint32_t index) 1805 { 1806 int offset, esize; 1807 uint32_t *pentry; 1808 1809 if (!pbuffer || !pque) 1810 return 0; 1811 1812 esize = pque->entry_size; 1813 len += snprintf(pbuffer+len, LPFC_QUE_ACC_BUF_SIZE-len, 1814 "QE-INDEX[%04d]:\n", index); 1815 1816 offset = 0; 1817 pentry = pque->qe[index].address; 1818 while (esize > 0) { 1819 len += snprintf(pbuffer+len, LPFC_QUE_ACC_BUF_SIZE-len, 1820 "%08x ", *pentry); 1821 pentry++; 1822 offset += sizeof(uint32_t); 1823 esize -= sizeof(uint32_t); 1824 if (esize > 0 && !(offset % (4 * sizeof(uint32_t)))) 1825 len += snprintf(pbuffer+len, 1826 LPFC_QUE_ACC_BUF_SIZE-len, "\n"); 1827 } 1828 len += snprintf(pbuffer+len, LPFC_QUE_ACC_BUF_SIZE-len, "\n"); 1829 1830 return len; 1831 } 1832 1833 /** 1834 * lpfc_idiag_queacc_read - idiag debugfs read port queue 1835 * @file: The file pointer to read from. 1836 * @buf: The buffer to copy the data to. 1837 * @nbytes: The number of bytes to read. 1838 * @ppos: The position in the file to start reading from. 1839 * 1840 * Description: 1841 * This routine reads data from the @phba device queue memory according to the 1842 * idiag command, and copies to user @buf. Depending on the queue dump read 1843 * command setup, it does either a single queue entry read or browing through 1844 * all entries of the queue. 1845 * 1846 * Returns: 1847 * This function returns the amount of data that was read (this could be less 1848 * than @nbytes if the end of the file was reached) or a negative error value. 1849 **/ 1850 static ssize_t 1851 lpfc_idiag_queacc_read(struct file *file, char __user *buf, size_t nbytes, 1852 loff_t *ppos) 1853 { 1854 struct lpfc_debug *debug = file->private_data; 1855 uint32_t last_index, index, count; 1856 struct lpfc_queue *pque = NULL; 1857 char *pbuffer; 1858 int len = 0; 1859 1860 /* This is a user read operation */ 1861 debug->op = LPFC_IDIAG_OP_RD; 1862 1863 if (!debug->buffer) 1864 debug->buffer = kmalloc(LPFC_QUE_ACC_BUF_SIZE, GFP_KERNEL); 1865 if (!debug->buffer) 1866 return 0; 1867 pbuffer = debug->buffer; 1868 1869 if (*ppos) 1870 return 0; 1871 1872 if (idiag.cmd.opcode == LPFC_IDIAG_CMD_QUEACC_RD) { 1873 index = idiag.cmd.data[2]; 1874 count = idiag.cmd.data[3]; 1875 pque = (struct lpfc_queue *)idiag.ptr_private; 1876 } else 1877 return 0; 1878 1879 /* Browse the queue starting from index */ 1880 if (count == LPFC_QUE_ACC_BROWSE) 1881 goto que_browse; 1882 1883 /* Read a single entry from the queue */ 1884 len = lpfc_idiag_queacc_read_qe(pbuffer, len, pque, index); 1885 1886 return simple_read_from_buffer(buf, nbytes, ppos, pbuffer, len); 1887 1888 que_browse: 1889 1890 /* Browse all entries from the queue */ 1891 last_index = idiag.offset.last_rd; 1892 index = last_index; 1893 1894 while (len < LPFC_QUE_ACC_SIZE - pque->entry_size) { 1895 len = lpfc_idiag_queacc_read_qe(pbuffer, len, pque, index); 1896 index++; 1897 if (index > pque->entry_count - 1) 1898 break; 1899 } 1900 1901 /* Set up the offset for next portion of pci cfg read */ 1902 if (index > pque->entry_count - 1) 1903 index = 0; 1904 idiag.offset.last_rd = index; 1905 1906 return simple_read_from_buffer(buf, nbytes, ppos, pbuffer, len); 1907 } 1908 1909 /** 1910 * lpfc_idiag_queacc_write - Syntax check and set up idiag queacc commands 1911 * @file: The file pointer to read from. 1912 * @buf: The buffer to copy the user data from. 1913 * @nbytes: The number of bytes to get. 1914 * @ppos: The position in the file to start reading from. 1915 * 1916 * This routine get the debugfs idiag command struct from user space and then 1917 * perform the syntax check for port queue read (dump) or write (set) command 1918 * accordingly. In the case of port queue read command, it sets up the command 1919 * in the idiag command struct for the following debugfs read operation. In 1920 * the case of port queue write operation, it executes the write operation 1921 * into the port queue entry accordingly. 1922 * 1923 * It returns the @nbytges passing in from debugfs user space when successful. 1924 * In case of error conditions, it returns proper error code back to the user 1925 * space. 1926 **/ 1927 static ssize_t 1928 lpfc_idiag_queacc_write(struct file *file, const char __user *buf, 1929 size_t nbytes, loff_t *ppos) 1930 { 1931 struct lpfc_debug *debug = file->private_data; 1932 struct lpfc_hba *phba = (struct lpfc_hba *)debug->i_private; 1933 uint32_t qidx, quetp, queid, index, count, offset, value; 1934 uint32_t *pentry; 1935 struct lpfc_queue *pque; 1936 int rc; 1937 1938 /* This is a user write operation */ 1939 debug->op = LPFC_IDIAG_OP_WR; 1940 1941 rc = lpfc_idiag_cmd_get(buf, nbytes, &idiag.cmd); 1942 if (rc < 0) 1943 return rc; 1944 1945 /* Get and sanity check on command feilds */ 1946 quetp = idiag.cmd.data[0]; 1947 queid = idiag.cmd.data[1]; 1948 index = idiag.cmd.data[2]; 1949 count = idiag.cmd.data[3]; 1950 offset = idiag.cmd.data[4]; 1951 value = idiag.cmd.data[5]; 1952 1953 /* Sanity check on command line arguments */ 1954 if (idiag.cmd.opcode == LPFC_IDIAG_CMD_QUEACC_WR || 1955 idiag.cmd.opcode == LPFC_IDIAG_CMD_QUEACC_ST || 1956 idiag.cmd.opcode == LPFC_IDIAG_CMD_QUEACC_CL) { 1957 if (rc != LPFC_QUE_ACC_WR_CMD_ARG) 1958 goto error_out; 1959 if (count != 1) 1960 goto error_out; 1961 } else if (idiag.cmd.opcode == LPFC_IDIAG_CMD_QUEACC_RD) { 1962 if (rc != LPFC_QUE_ACC_RD_CMD_ARG) 1963 goto error_out; 1964 } else 1965 goto error_out; 1966 1967 switch (quetp) { 1968 case LPFC_IDIAG_EQ: 1969 /* Slow-path event queue */ 1970 if (phba->sli4_hba.sp_eq->queue_id == queid) { 1971 /* Sanity check */ 1972 rc = lpfc_idiag_que_param_check( 1973 phba->sli4_hba.sp_eq, index, count); 1974 if (rc) 1975 goto error_out; 1976 idiag.ptr_private = phba->sli4_hba.sp_eq; 1977 goto pass_check; 1978 } 1979 /* Fast-path event queue */ 1980 for (qidx = 0; qidx < phba->cfg_fcp_eq_count; qidx++) { 1981 if (phba->sli4_hba.fp_eq[qidx]->queue_id == queid) { 1982 /* Sanity check */ 1983 rc = lpfc_idiag_que_param_check( 1984 phba->sli4_hba.fp_eq[qidx], 1985 index, count); 1986 if (rc) 1987 goto error_out; 1988 idiag.ptr_private = phba->sli4_hba.fp_eq[qidx]; 1989 goto pass_check; 1990 } 1991 } 1992 goto error_out; 1993 break; 1994 case LPFC_IDIAG_CQ: 1995 /* MBX complete queue */ 1996 if (phba->sli4_hba.mbx_cq->queue_id == queid) { 1997 /* Sanity check */ 1998 rc = lpfc_idiag_que_param_check( 1999 phba->sli4_hba.mbx_cq, index, count); 2000 if (rc) 2001 goto error_out; 2002 idiag.ptr_private = phba->sli4_hba.mbx_cq; 2003 goto pass_check; 2004 } 2005 /* ELS complete queue */ 2006 if (phba->sli4_hba.els_cq->queue_id == queid) { 2007 /* Sanity check */ 2008 rc = lpfc_idiag_que_param_check( 2009 phba->sli4_hba.els_cq, index, count); 2010 if (rc) 2011 goto error_out; 2012 idiag.ptr_private = phba->sli4_hba.els_cq; 2013 goto pass_check; 2014 } 2015 /* FCP complete queue */ 2016 qidx = 0; 2017 do { 2018 if (phba->sli4_hba.fcp_cq[qidx]->queue_id == queid) { 2019 /* Sanity check */ 2020 rc = lpfc_idiag_que_param_check( 2021 phba->sli4_hba.fcp_cq[qidx], 2022 index, count); 2023 if (rc) 2024 goto error_out; 2025 idiag.ptr_private = 2026 phba->sli4_hba.fcp_cq[qidx]; 2027 goto pass_check; 2028 } 2029 } while (++qidx < phba->cfg_fcp_eq_count); 2030 goto error_out; 2031 break; 2032 case LPFC_IDIAG_MQ: 2033 /* MBX work queue */ 2034 if (phba->sli4_hba.mbx_wq->queue_id == queid) { 2035 /* Sanity check */ 2036 rc = lpfc_idiag_que_param_check( 2037 phba->sli4_hba.mbx_wq, index, count); 2038 if (rc) 2039 goto error_out; 2040 idiag.ptr_private = phba->sli4_hba.mbx_wq; 2041 goto pass_check; 2042 } 2043 break; 2044 case LPFC_IDIAG_WQ: 2045 /* ELS work queue */ 2046 if (phba->sli4_hba.els_wq->queue_id == queid) { 2047 /* Sanity check */ 2048 rc = lpfc_idiag_que_param_check( 2049 phba->sli4_hba.els_wq, index, count); 2050 if (rc) 2051 goto error_out; 2052 idiag.ptr_private = phba->sli4_hba.els_wq; 2053 goto pass_check; 2054 } 2055 /* FCP work queue */ 2056 for (qidx = 0; qidx < phba->cfg_fcp_wq_count; qidx++) { 2057 if (phba->sli4_hba.fcp_wq[qidx]->queue_id == queid) { 2058 /* Sanity check */ 2059 rc = lpfc_idiag_que_param_check( 2060 phba->sli4_hba.fcp_wq[qidx], 2061 index, count); 2062 if (rc) 2063 goto error_out; 2064 idiag.ptr_private = 2065 phba->sli4_hba.fcp_wq[qidx]; 2066 goto pass_check; 2067 } 2068 } 2069 goto error_out; 2070 break; 2071 case LPFC_IDIAG_RQ: 2072 /* HDR queue */ 2073 if (phba->sli4_hba.hdr_rq->queue_id == queid) { 2074 /* Sanity check */ 2075 rc = lpfc_idiag_que_param_check( 2076 phba->sli4_hba.hdr_rq, index, count); 2077 if (rc) 2078 goto error_out; 2079 idiag.ptr_private = phba->sli4_hba.hdr_rq; 2080 goto pass_check; 2081 } 2082 /* DAT queue */ 2083 if (phba->sli4_hba.dat_rq->queue_id == queid) { 2084 /* Sanity check */ 2085 rc = lpfc_idiag_que_param_check( 2086 phba->sli4_hba.dat_rq, index, count); 2087 if (rc) 2088 goto error_out; 2089 idiag.ptr_private = phba->sli4_hba.dat_rq; 2090 goto pass_check; 2091 } 2092 goto error_out; 2093 break; 2094 default: 2095 goto error_out; 2096 break; 2097 } 2098 2099 pass_check: 2100 2101 if (idiag.cmd.opcode == LPFC_IDIAG_CMD_QUEACC_RD) { 2102 if (count == LPFC_QUE_ACC_BROWSE) 2103 idiag.offset.last_rd = index; 2104 } 2105 2106 if (idiag.cmd.opcode == LPFC_IDIAG_CMD_QUEACC_WR || 2107 idiag.cmd.opcode == LPFC_IDIAG_CMD_QUEACC_ST || 2108 idiag.cmd.opcode == LPFC_IDIAG_CMD_QUEACC_CL) { 2109 /* Additional sanity checks on write operation */ 2110 pque = (struct lpfc_queue *)idiag.ptr_private; 2111 if (offset > pque->entry_size/sizeof(uint32_t) - 1) 2112 goto error_out; 2113 pentry = pque->qe[index].address; 2114 pentry += offset; 2115 if (idiag.cmd.opcode == LPFC_IDIAG_CMD_QUEACC_WR) 2116 *pentry = value; 2117 if (idiag.cmd.opcode == LPFC_IDIAG_CMD_QUEACC_ST) 2118 *pentry |= value; 2119 if (idiag.cmd.opcode == LPFC_IDIAG_CMD_QUEACC_CL) 2120 *pentry &= ~value; 2121 } 2122 return nbytes; 2123 2124 error_out: 2125 /* Clean out command structure on command error out */ 2126 memset(&idiag, 0, sizeof(idiag)); 2127 return -EINVAL; 2128 } 2129 2130 /** 2131 * lpfc_idiag_drbacc_read_reg - idiag debugfs read a doorbell register 2132 * @phba: The pointer to hba structure. 2133 * @pbuffer: The pointer to the buffer to copy the data to. 2134 * @len: The lenght of bytes to copied. 2135 * @drbregid: The id to doorbell registers. 2136 * 2137 * Description: 2138 * This routine reads a doorbell register and copies its content to the 2139 * user buffer pointed to by @pbuffer. 2140 * 2141 * Returns: 2142 * This function returns the amount of data that was copied into @pbuffer. 2143 **/ 2144 static int 2145 lpfc_idiag_drbacc_read_reg(struct lpfc_hba *phba, char *pbuffer, 2146 int len, uint32_t drbregid) 2147 { 2148 2149 if (!pbuffer) 2150 return 0; 2151 2152 switch (drbregid) { 2153 case LPFC_DRB_EQCQ: 2154 len += snprintf(pbuffer+len, LPFC_DRB_ACC_BUF_SIZE-len, 2155 "EQCQ-DRB-REG: 0x%08x\n", 2156 readl(phba->sli4_hba.EQCQDBregaddr)); 2157 break; 2158 case LPFC_DRB_MQ: 2159 len += snprintf(pbuffer+len, LPFC_DRB_ACC_BUF_SIZE-len, 2160 "MQ-DRB-REG: 0x%08x\n", 2161 readl(phba->sli4_hba.MQDBregaddr)); 2162 break; 2163 case LPFC_DRB_WQ: 2164 len += snprintf(pbuffer+len, LPFC_DRB_ACC_BUF_SIZE-len, 2165 "WQ-DRB-REG: 0x%08x\n", 2166 readl(phba->sli4_hba.WQDBregaddr)); 2167 break; 2168 case LPFC_DRB_RQ: 2169 len += snprintf(pbuffer+len, LPFC_DRB_ACC_BUF_SIZE-len, 2170 "RQ-DRB-REG: 0x%08x\n", 2171 readl(phba->sli4_hba.RQDBregaddr)); 2172 break; 2173 default: 2174 break; 2175 } 2176 2177 return len; 2178 } 2179 2180 /** 2181 * lpfc_idiag_drbacc_read - idiag debugfs read port doorbell 2182 * @file: The file pointer to read from. 2183 * @buf: The buffer to copy the data to. 2184 * @nbytes: The number of bytes to read. 2185 * @ppos: The position in the file to start reading from. 2186 * 2187 * Description: 2188 * This routine reads data from the @phba device doorbell register according 2189 * to the idiag command, and copies to user @buf. Depending on the doorbell 2190 * register read command setup, it does either a single doorbell register 2191 * read or dump all doorbell registers. 2192 * 2193 * Returns: 2194 * This function returns the amount of data that was read (this could be less 2195 * than @nbytes if the end of the file was reached) or a negative error value. 2196 **/ 2197 static ssize_t 2198 lpfc_idiag_drbacc_read(struct file *file, char __user *buf, size_t nbytes, 2199 loff_t *ppos) 2200 { 2201 struct lpfc_debug *debug = file->private_data; 2202 struct lpfc_hba *phba = (struct lpfc_hba *)debug->i_private; 2203 uint32_t drb_reg_id, i; 2204 char *pbuffer; 2205 int len = 0; 2206 2207 /* This is a user read operation */ 2208 debug->op = LPFC_IDIAG_OP_RD; 2209 2210 if (!debug->buffer) 2211 debug->buffer = kmalloc(LPFC_DRB_ACC_BUF_SIZE, GFP_KERNEL); 2212 if (!debug->buffer) 2213 return 0; 2214 pbuffer = debug->buffer; 2215 2216 if (*ppos) 2217 return 0; 2218 2219 if (idiag.cmd.opcode == LPFC_IDIAG_CMD_DRBACC_RD) 2220 drb_reg_id = idiag.cmd.data[0]; 2221 else 2222 return 0; 2223 2224 if (drb_reg_id == LPFC_DRB_ACC_ALL) 2225 for (i = 1; i <= LPFC_DRB_MAX; i++) 2226 len = lpfc_idiag_drbacc_read_reg(phba, 2227 pbuffer, len, i); 2228 else 2229 len = lpfc_idiag_drbacc_read_reg(phba, 2230 pbuffer, len, drb_reg_id); 2231 2232 return simple_read_from_buffer(buf, nbytes, ppos, pbuffer, len); 2233 } 2234 2235 /** 2236 * lpfc_idiag_drbacc_write - Syntax check and set up idiag drbacc commands 2237 * @file: The file pointer to read from. 2238 * @buf: The buffer to copy the user data from. 2239 * @nbytes: The number of bytes to get. 2240 * @ppos: The position in the file to start reading from. 2241 * 2242 * This routine get the debugfs idiag command struct from user space and then 2243 * perform the syntax check for port doorbell register read (dump) or write 2244 * (set) command accordingly. In the case of port queue read command, it sets 2245 * up the command in the idiag command struct for the following debugfs read 2246 * operation. In the case of port doorbell register write operation, it 2247 * executes the write operation into the port doorbell register accordingly. 2248 * 2249 * It returns the @nbytges passing in from debugfs user space when successful. 2250 * In case of error conditions, it returns proper error code back to the user 2251 * space. 2252 **/ 2253 static ssize_t 2254 lpfc_idiag_drbacc_write(struct file *file, const char __user *buf, 2255 size_t nbytes, loff_t *ppos) 2256 { 2257 struct lpfc_debug *debug = file->private_data; 2258 struct lpfc_hba *phba = (struct lpfc_hba *)debug->i_private; 2259 uint32_t drb_reg_id, value, reg_val; 2260 void __iomem *drb_reg; 2261 int rc; 2262 2263 /* This is a user write operation */ 2264 debug->op = LPFC_IDIAG_OP_WR; 2265 2266 rc = lpfc_idiag_cmd_get(buf, nbytes, &idiag.cmd); 2267 if (rc < 0) 2268 return rc; 2269 2270 /* Sanity check on command line arguments */ 2271 drb_reg_id = idiag.cmd.data[0]; 2272 value = idiag.cmd.data[1]; 2273 2274 if (idiag.cmd.opcode == LPFC_IDIAG_CMD_DRBACC_WR || 2275 idiag.cmd.opcode == LPFC_IDIAG_CMD_DRBACC_ST || 2276 idiag.cmd.opcode == LPFC_IDIAG_CMD_DRBACC_CL) { 2277 if (rc != LPFC_DRB_ACC_WR_CMD_ARG) 2278 goto error_out; 2279 if (drb_reg_id > LPFC_DRB_MAX) 2280 goto error_out; 2281 } else if (idiag.cmd.opcode == LPFC_IDIAG_CMD_DRBACC_RD) { 2282 if (rc != LPFC_DRB_ACC_RD_CMD_ARG) 2283 goto error_out; 2284 if ((drb_reg_id > LPFC_DRB_MAX) && 2285 (drb_reg_id != LPFC_DRB_ACC_ALL)) 2286 goto error_out; 2287 } else 2288 goto error_out; 2289 2290 /* Perform the write access operation */ 2291 if (idiag.cmd.opcode == LPFC_IDIAG_CMD_DRBACC_WR || 2292 idiag.cmd.opcode == LPFC_IDIAG_CMD_DRBACC_ST || 2293 idiag.cmd.opcode == LPFC_IDIAG_CMD_DRBACC_CL) { 2294 switch (drb_reg_id) { 2295 case LPFC_DRB_EQCQ: 2296 drb_reg = phba->sli4_hba.EQCQDBregaddr; 2297 break; 2298 case LPFC_DRB_MQ: 2299 drb_reg = phba->sli4_hba.MQDBregaddr; 2300 break; 2301 case LPFC_DRB_WQ: 2302 drb_reg = phba->sli4_hba.WQDBregaddr; 2303 break; 2304 case LPFC_DRB_RQ: 2305 drb_reg = phba->sli4_hba.RQDBregaddr; 2306 break; 2307 default: 2308 goto error_out; 2309 } 2310 2311 if (idiag.cmd.opcode == LPFC_IDIAG_CMD_DRBACC_WR) 2312 reg_val = value; 2313 if (idiag.cmd.opcode == LPFC_IDIAG_CMD_DRBACC_ST) { 2314 reg_val = readl(drb_reg); 2315 reg_val |= value; 2316 } 2317 if (idiag.cmd.opcode == LPFC_IDIAG_CMD_DRBACC_CL) { 2318 reg_val = readl(drb_reg); 2319 reg_val &= ~value; 2320 } 2321 writel(reg_val, drb_reg); 2322 readl(drb_reg); /* flush */ 2323 } 2324 return nbytes; 2325 2326 error_out: 2327 /* Clean out command structure on command error out */ 2328 memset(&idiag, 0, sizeof(idiag)); 2329 return -EINVAL; 2330 } 2331 2332 #undef lpfc_debugfs_op_disc_trc 2333 static const struct file_operations lpfc_debugfs_op_disc_trc = { 2334 .owner = THIS_MODULE, 2335 .open = lpfc_debugfs_disc_trc_open, 2336 .llseek = lpfc_debugfs_lseek, 2337 .read = lpfc_debugfs_read, 2338 .release = lpfc_debugfs_release, 2339 }; 2340 2341 #undef lpfc_debugfs_op_nodelist 2342 static const struct file_operations lpfc_debugfs_op_nodelist = { 2343 .owner = THIS_MODULE, 2344 .open = lpfc_debugfs_nodelist_open, 2345 .llseek = lpfc_debugfs_lseek, 2346 .read = lpfc_debugfs_read, 2347 .release = lpfc_debugfs_release, 2348 }; 2349 2350 #undef lpfc_debugfs_op_hbqinfo 2351 static const struct file_operations lpfc_debugfs_op_hbqinfo = { 2352 .owner = THIS_MODULE, 2353 .open = lpfc_debugfs_hbqinfo_open, 2354 .llseek = lpfc_debugfs_lseek, 2355 .read = lpfc_debugfs_read, 2356 .release = lpfc_debugfs_release, 2357 }; 2358 2359 #undef lpfc_debugfs_op_dumpHBASlim 2360 static const struct file_operations lpfc_debugfs_op_dumpHBASlim = { 2361 .owner = THIS_MODULE, 2362 .open = lpfc_debugfs_dumpHBASlim_open, 2363 .llseek = lpfc_debugfs_lseek, 2364 .read = lpfc_debugfs_read, 2365 .release = lpfc_debugfs_release, 2366 }; 2367 2368 #undef lpfc_debugfs_op_dumpHostSlim 2369 static const struct file_operations lpfc_debugfs_op_dumpHostSlim = { 2370 .owner = THIS_MODULE, 2371 .open = lpfc_debugfs_dumpHostSlim_open, 2372 .llseek = lpfc_debugfs_lseek, 2373 .read = lpfc_debugfs_read, 2374 .release = lpfc_debugfs_release, 2375 }; 2376 2377 #undef lpfc_debugfs_op_dumpData 2378 static const struct file_operations lpfc_debugfs_op_dumpData = { 2379 .owner = THIS_MODULE, 2380 .open = lpfc_debugfs_dumpData_open, 2381 .llseek = lpfc_debugfs_lseek, 2382 .read = lpfc_debugfs_read, 2383 .write = lpfc_debugfs_dumpDataDif_write, 2384 .release = lpfc_debugfs_dumpDataDif_release, 2385 }; 2386 2387 #undef lpfc_debugfs_op_dumpDif 2388 static const struct file_operations lpfc_debugfs_op_dumpDif = { 2389 .owner = THIS_MODULE, 2390 .open = lpfc_debugfs_dumpDif_open, 2391 .llseek = lpfc_debugfs_lseek, 2392 .read = lpfc_debugfs_read, 2393 .write = lpfc_debugfs_dumpDataDif_write, 2394 .release = lpfc_debugfs_dumpDataDif_release, 2395 }; 2396 2397 #undef lpfc_debugfs_op_slow_ring_trc 2398 static const struct file_operations lpfc_debugfs_op_slow_ring_trc = { 2399 .owner = THIS_MODULE, 2400 .open = lpfc_debugfs_slow_ring_trc_open, 2401 .llseek = lpfc_debugfs_lseek, 2402 .read = lpfc_debugfs_read, 2403 .release = lpfc_debugfs_release, 2404 }; 2405 2406 static struct dentry *lpfc_debugfs_root = NULL; 2407 static atomic_t lpfc_debugfs_hba_count; 2408 2409 /* 2410 * File operations for the iDiag debugfs 2411 */ 2412 #undef lpfc_idiag_op_pciCfg 2413 static const struct file_operations lpfc_idiag_op_pciCfg = { 2414 .owner = THIS_MODULE, 2415 .open = lpfc_idiag_open, 2416 .llseek = lpfc_debugfs_lseek, 2417 .read = lpfc_idiag_pcicfg_read, 2418 .write = lpfc_idiag_pcicfg_write, 2419 .release = lpfc_idiag_cmd_release, 2420 }; 2421 2422 #undef lpfc_idiag_op_queInfo 2423 static const struct file_operations lpfc_idiag_op_queInfo = { 2424 .owner = THIS_MODULE, 2425 .open = lpfc_idiag_open, 2426 .read = lpfc_idiag_queinfo_read, 2427 .release = lpfc_idiag_release, 2428 }; 2429 2430 #undef lpfc_idiag_op_queacc 2431 static const struct file_operations lpfc_idiag_op_queAcc = { 2432 .owner = THIS_MODULE, 2433 .open = lpfc_idiag_open, 2434 .llseek = lpfc_debugfs_lseek, 2435 .read = lpfc_idiag_queacc_read, 2436 .write = lpfc_idiag_queacc_write, 2437 .release = lpfc_idiag_cmd_release, 2438 }; 2439 2440 #undef lpfc_idiag_op_drbacc 2441 static const struct file_operations lpfc_idiag_op_drbAcc = { 2442 .owner = THIS_MODULE, 2443 .open = lpfc_idiag_open, 2444 .llseek = lpfc_debugfs_lseek, 2445 .read = lpfc_idiag_drbacc_read, 2446 .write = lpfc_idiag_drbacc_write, 2447 .release = lpfc_idiag_cmd_release, 2448 }; 2449 2450 #endif 2451 2452 /** 2453 * lpfc_debugfs_initialize - Initialize debugfs for a vport 2454 * @vport: The vport pointer to initialize. 2455 * 2456 * Description: 2457 * When Debugfs is configured this routine sets up the lpfc debugfs file system. 2458 * If not already created, this routine will create the lpfc directory, and 2459 * lpfcX directory (for this HBA), and vportX directory for this vport. It will 2460 * also create each file used to access lpfc specific debugfs information. 2461 **/ 2462 inline void 2463 lpfc_debugfs_initialize(struct lpfc_vport *vport) 2464 { 2465 #ifdef CONFIG_SCSI_LPFC_DEBUG_FS 2466 struct lpfc_hba *phba = vport->phba; 2467 char name[64]; 2468 uint32_t num, i; 2469 2470 if (!lpfc_debugfs_enable) 2471 return; 2472 2473 /* Setup lpfc root directory */ 2474 if (!lpfc_debugfs_root) { 2475 lpfc_debugfs_root = debugfs_create_dir("lpfc", NULL); 2476 atomic_set(&lpfc_debugfs_hba_count, 0); 2477 if (!lpfc_debugfs_root) { 2478 lpfc_printf_vlog(vport, KERN_ERR, LOG_INIT, 2479 "0408 Cannot create debugfs root\n"); 2480 goto debug_failed; 2481 } 2482 } 2483 if (!lpfc_debugfs_start_time) 2484 lpfc_debugfs_start_time = jiffies; 2485 2486 /* Setup funcX directory for specific HBA PCI function */ 2487 snprintf(name, sizeof(name), "fn%d", phba->brd_no); 2488 if (!phba->hba_debugfs_root) { 2489 phba->hba_debugfs_root = 2490 debugfs_create_dir(name, lpfc_debugfs_root); 2491 if (!phba->hba_debugfs_root) { 2492 lpfc_printf_vlog(vport, KERN_ERR, LOG_INIT, 2493 "0412 Cannot create debugfs hba\n"); 2494 goto debug_failed; 2495 } 2496 atomic_inc(&lpfc_debugfs_hba_count); 2497 atomic_set(&phba->debugfs_vport_count, 0); 2498 2499 /* Setup hbqinfo */ 2500 snprintf(name, sizeof(name), "hbqinfo"); 2501 phba->debug_hbqinfo = 2502 debugfs_create_file(name, S_IFREG|S_IRUGO|S_IWUSR, 2503 phba->hba_debugfs_root, 2504 phba, &lpfc_debugfs_op_hbqinfo); 2505 if (!phba->debug_hbqinfo) { 2506 lpfc_printf_vlog(vport, KERN_ERR, LOG_INIT, 2507 "0411 Cannot create debugfs hbqinfo\n"); 2508 goto debug_failed; 2509 } 2510 2511 /* Setup dumpHBASlim */ 2512 if (phba->sli_rev < LPFC_SLI_REV4) { 2513 snprintf(name, sizeof(name), "dumpHBASlim"); 2514 phba->debug_dumpHBASlim = 2515 debugfs_create_file(name, 2516 S_IFREG|S_IRUGO|S_IWUSR, 2517 phba->hba_debugfs_root, 2518 phba, &lpfc_debugfs_op_dumpHBASlim); 2519 if (!phba->debug_dumpHBASlim) { 2520 lpfc_printf_vlog(vport, KERN_ERR, LOG_INIT, 2521 "0413 Cannot create debugfs " 2522 "dumpHBASlim\n"); 2523 goto debug_failed; 2524 } 2525 } else 2526 phba->debug_dumpHBASlim = NULL; 2527 2528 /* Setup dumpHostSlim */ 2529 if (phba->sli_rev < LPFC_SLI_REV4) { 2530 snprintf(name, sizeof(name), "dumpHostSlim"); 2531 phba->debug_dumpHostSlim = 2532 debugfs_create_file(name, 2533 S_IFREG|S_IRUGO|S_IWUSR, 2534 phba->hba_debugfs_root, 2535 phba, &lpfc_debugfs_op_dumpHostSlim); 2536 if (!phba->debug_dumpHostSlim) { 2537 lpfc_printf_vlog(vport, KERN_ERR, LOG_INIT, 2538 "0414 Cannot create debugfs " 2539 "dumpHostSlim\n"); 2540 goto debug_failed; 2541 } 2542 } else 2543 phba->debug_dumpHBASlim = NULL; 2544 2545 /* Setup dumpData */ 2546 snprintf(name, sizeof(name), "dumpData"); 2547 phba->debug_dumpData = 2548 debugfs_create_file(name, S_IFREG|S_IRUGO|S_IWUSR, 2549 phba->hba_debugfs_root, 2550 phba, &lpfc_debugfs_op_dumpData); 2551 if (!phba->debug_dumpData) { 2552 lpfc_printf_vlog(vport, KERN_ERR, LOG_INIT, 2553 "0800 Cannot create debugfs dumpData\n"); 2554 goto debug_failed; 2555 } 2556 2557 /* Setup dumpDif */ 2558 snprintf(name, sizeof(name), "dumpDif"); 2559 phba->debug_dumpDif = 2560 debugfs_create_file(name, S_IFREG|S_IRUGO|S_IWUSR, 2561 phba->hba_debugfs_root, 2562 phba, &lpfc_debugfs_op_dumpDif); 2563 if (!phba->debug_dumpDif) { 2564 lpfc_printf_vlog(vport, KERN_ERR, LOG_INIT, 2565 "0801 Cannot create debugfs dumpDif\n"); 2566 goto debug_failed; 2567 } 2568 2569 /* Setup slow ring trace */ 2570 if (lpfc_debugfs_max_slow_ring_trc) { 2571 num = lpfc_debugfs_max_slow_ring_trc - 1; 2572 if (num & lpfc_debugfs_max_slow_ring_trc) { 2573 /* Change to be a power of 2 */ 2574 num = lpfc_debugfs_max_slow_ring_trc; 2575 i = 0; 2576 while (num > 1) { 2577 num = num >> 1; 2578 i++; 2579 } 2580 lpfc_debugfs_max_slow_ring_trc = (1 << i); 2581 printk(KERN_ERR 2582 "lpfc_debugfs_max_disc_trc changed to " 2583 "%d\n", lpfc_debugfs_max_disc_trc); 2584 } 2585 } 2586 2587 snprintf(name, sizeof(name), "slow_ring_trace"); 2588 phba->debug_slow_ring_trc = 2589 debugfs_create_file(name, S_IFREG|S_IRUGO|S_IWUSR, 2590 phba->hba_debugfs_root, 2591 phba, &lpfc_debugfs_op_slow_ring_trc); 2592 if (!phba->debug_slow_ring_trc) { 2593 lpfc_printf_vlog(vport, KERN_ERR, LOG_INIT, 2594 "0415 Cannot create debugfs " 2595 "slow_ring_trace\n"); 2596 goto debug_failed; 2597 } 2598 if (!phba->slow_ring_trc) { 2599 phba->slow_ring_trc = kmalloc( 2600 (sizeof(struct lpfc_debugfs_trc) * 2601 lpfc_debugfs_max_slow_ring_trc), 2602 GFP_KERNEL); 2603 if (!phba->slow_ring_trc) { 2604 lpfc_printf_vlog(vport, KERN_ERR, LOG_INIT, 2605 "0416 Cannot create debugfs " 2606 "slow_ring buffer\n"); 2607 goto debug_failed; 2608 } 2609 atomic_set(&phba->slow_ring_trc_cnt, 0); 2610 memset(phba->slow_ring_trc, 0, 2611 (sizeof(struct lpfc_debugfs_trc) * 2612 lpfc_debugfs_max_slow_ring_trc)); 2613 } 2614 } 2615 2616 snprintf(name, sizeof(name), "vport%d", vport->vpi); 2617 if (!vport->vport_debugfs_root) { 2618 vport->vport_debugfs_root = 2619 debugfs_create_dir(name, phba->hba_debugfs_root); 2620 if (!vport->vport_debugfs_root) { 2621 lpfc_printf_vlog(vport, KERN_ERR, LOG_INIT, 2622 "0417 Can't create debugfs\n"); 2623 goto debug_failed; 2624 } 2625 atomic_inc(&phba->debugfs_vport_count); 2626 } 2627 2628 if (lpfc_debugfs_max_disc_trc) { 2629 num = lpfc_debugfs_max_disc_trc - 1; 2630 if (num & lpfc_debugfs_max_disc_trc) { 2631 /* Change to be a power of 2 */ 2632 num = lpfc_debugfs_max_disc_trc; 2633 i = 0; 2634 while (num > 1) { 2635 num = num >> 1; 2636 i++; 2637 } 2638 lpfc_debugfs_max_disc_trc = (1 << i); 2639 printk(KERN_ERR 2640 "lpfc_debugfs_max_disc_trc changed to %d\n", 2641 lpfc_debugfs_max_disc_trc); 2642 } 2643 } 2644 2645 vport->disc_trc = kzalloc( 2646 (sizeof(struct lpfc_debugfs_trc) * lpfc_debugfs_max_disc_trc), 2647 GFP_KERNEL); 2648 2649 if (!vport->disc_trc) { 2650 lpfc_printf_vlog(vport, KERN_ERR, LOG_INIT, 2651 "0418 Cannot create debugfs disc trace " 2652 "buffer\n"); 2653 goto debug_failed; 2654 } 2655 atomic_set(&vport->disc_trc_cnt, 0); 2656 2657 snprintf(name, sizeof(name), "discovery_trace"); 2658 vport->debug_disc_trc = 2659 debugfs_create_file(name, S_IFREG|S_IRUGO|S_IWUSR, 2660 vport->vport_debugfs_root, 2661 vport, &lpfc_debugfs_op_disc_trc); 2662 if (!vport->debug_disc_trc) { 2663 lpfc_printf_vlog(vport, KERN_ERR, LOG_INIT, 2664 "0419 Cannot create debugfs " 2665 "discovery_trace\n"); 2666 goto debug_failed; 2667 } 2668 snprintf(name, sizeof(name), "nodelist"); 2669 vport->debug_nodelist = 2670 debugfs_create_file(name, S_IFREG|S_IRUGO|S_IWUSR, 2671 vport->vport_debugfs_root, 2672 vport, &lpfc_debugfs_op_nodelist); 2673 if (!vport->debug_nodelist) { 2674 lpfc_printf_vlog(vport, KERN_ERR, LOG_INIT, 2675 "0409 Can't create debugfs nodelist\n"); 2676 goto debug_failed; 2677 } 2678 2679 /* 2680 * iDiag debugfs root entry points for SLI4 device only 2681 */ 2682 if (phba->sli_rev < LPFC_SLI_REV4) 2683 goto debug_failed; 2684 2685 snprintf(name, sizeof(name), "iDiag"); 2686 if (!phba->idiag_root) { 2687 phba->idiag_root = 2688 debugfs_create_dir(name, phba->hba_debugfs_root); 2689 if (!phba->idiag_root) { 2690 lpfc_printf_vlog(vport, KERN_ERR, LOG_INIT, 2691 "2922 Can't create idiag debugfs\n"); 2692 goto debug_failed; 2693 } 2694 /* Initialize iDiag data structure */ 2695 memset(&idiag, 0, sizeof(idiag)); 2696 } 2697 2698 /* iDiag read PCI config space */ 2699 snprintf(name, sizeof(name), "pciCfg"); 2700 if (!phba->idiag_pci_cfg) { 2701 phba->idiag_pci_cfg = 2702 debugfs_create_file(name, S_IFREG|S_IRUGO|S_IWUSR, 2703 phba->idiag_root, phba, &lpfc_idiag_op_pciCfg); 2704 if (!phba->idiag_pci_cfg) { 2705 lpfc_printf_vlog(vport, KERN_ERR, LOG_INIT, 2706 "2923 Can't create idiag debugfs\n"); 2707 goto debug_failed; 2708 } 2709 idiag.offset.last_rd = 0; 2710 } 2711 2712 /* iDiag get PCI function queue information */ 2713 snprintf(name, sizeof(name), "queInfo"); 2714 if (!phba->idiag_que_info) { 2715 phba->idiag_que_info = 2716 debugfs_create_file(name, S_IFREG|S_IRUGO, 2717 phba->idiag_root, phba, &lpfc_idiag_op_queInfo); 2718 if (!phba->idiag_que_info) { 2719 lpfc_printf_vlog(vport, KERN_ERR, LOG_INIT, 2720 "2924 Can't create idiag debugfs\n"); 2721 goto debug_failed; 2722 } 2723 } 2724 2725 /* iDiag access PCI function queue */ 2726 snprintf(name, sizeof(name), "queAcc"); 2727 if (!phba->idiag_que_acc) { 2728 phba->idiag_que_acc = 2729 debugfs_create_file(name, S_IFREG|S_IRUGO|S_IWUSR, 2730 phba->idiag_root, phba, &lpfc_idiag_op_queAcc); 2731 if (!phba->idiag_que_acc) { 2732 lpfc_printf_vlog(vport, KERN_ERR, LOG_INIT, 2733 "2926 Can't create idiag debugfs\n"); 2734 goto debug_failed; 2735 } 2736 } 2737 2738 /* iDiag access PCI function doorbell registers */ 2739 snprintf(name, sizeof(name), "drbAcc"); 2740 if (!phba->idiag_drb_acc) { 2741 phba->idiag_drb_acc = 2742 debugfs_create_file(name, S_IFREG|S_IRUGO|S_IWUSR, 2743 phba->idiag_root, phba, &lpfc_idiag_op_drbAcc); 2744 if (!phba->idiag_drb_acc) { 2745 lpfc_printf_vlog(vport, KERN_ERR, LOG_INIT, 2746 "2927 Can't create idiag debugfs\n"); 2747 goto debug_failed; 2748 } 2749 } 2750 2751 debug_failed: 2752 return; 2753 #endif 2754 } 2755 2756 /** 2757 * lpfc_debugfs_terminate - Tear down debugfs infrastructure for this vport 2758 * @vport: The vport pointer to remove from debugfs. 2759 * 2760 * Description: 2761 * When Debugfs is configured this routine removes debugfs file system elements 2762 * that are specific to this vport. It also checks to see if there are any 2763 * users left for the debugfs directories associated with the HBA and driver. If 2764 * this is the last user of the HBA directory or driver directory then it will 2765 * remove those from the debugfs infrastructure as well. 2766 **/ 2767 inline void 2768 lpfc_debugfs_terminate(struct lpfc_vport *vport) 2769 { 2770 #ifdef CONFIG_SCSI_LPFC_DEBUG_FS 2771 struct lpfc_hba *phba = vport->phba; 2772 2773 if (vport->disc_trc) { 2774 kfree(vport->disc_trc); 2775 vport->disc_trc = NULL; 2776 } 2777 if (vport->debug_disc_trc) { 2778 debugfs_remove(vport->debug_disc_trc); /* discovery_trace */ 2779 vport->debug_disc_trc = NULL; 2780 } 2781 if (vport->debug_nodelist) { 2782 debugfs_remove(vport->debug_nodelist); /* nodelist */ 2783 vport->debug_nodelist = NULL; 2784 } 2785 2786 if (vport->vport_debugfs_root) { 2787 debugfs_remove(vport->vport_debugfs_root); /* vportX */ 2788 vport->vport_debugfs_root = NULL; 2789 atomic_dec(&phba->debugfs_vport_count); 2790 } 2791 if (atomic_read(&phba->debugfs_vport_count) == 0) { 2792 2793 if (phba->debug_hbqinfo) { 2794 debugfs_remove(phba->debug_hbqinfo); /* hbqinfo */ 2795 phba->debug_hbqinfo = NULL; 2796 } 2797 if (phba->debug_dumpHBASlim) { 2798 debugfs_remove(phba->debug_dumpHBASlim); /* HBASlim */ 2799 phba->debug_dumpHBASlim = NULL; 2800 } 2801 if (phba->debug_dumpHostSlim) { 2802 debugfs_remove(phba->debug_dumpHostSlim); /* HostSlim */ 2803 phba->debug_dumpHostSlim = NULL; 2804 } 2805 if (phba->debug_dumpData) { 2806 debugfs_remove(phba->debug_dumpData); /* dumpData */ 2807 phba->debug_dumpData = NULL; 2808 } 2809 2810 if (phba->debug_dumpDif) { 2811 debugfs_remove(phba->debug_dumpDif); /* dumpDif */ 2812 phba->debug_dumpDif = NULL; 2813 } 2814 2815 if (phba->slow_ring_trc) { 2816 kfree(phba->slow_ring_trc); 2817 phba->slow_ring_trc = NULL; 2818 } 2819 if (phba->debug_slow_ring_trc) { 2820 /* slow_ring_trace */ 2821 debugfs_remove(phba->debug_slow_ring_trc); 2822 phba->debug_slow_ring_trc = NULL; 2823 } 2824 2825 /* 2826 * iDiag release 2827 */ 2828 if (phba->sli_rev == LPFC_SLI_REV4) { 2829 if (phba->idiag_drb_acc) { 2830 /* iDiag drbAcc */ 2831 debugfs_remove(phba->idiag_drb_acc); 2832 phba->idiag_drb_acc = NULL; 2833 } 2834 if (phba->idiag_que_acc) { 2835 /* iDiag queAcc */ 2836 debugfs_remove(phba->idiag_que_acc); 2837 phba->idiag_que_acc = NULL; 2838 } 2839 if (phba->idiag_que_info) { 2840 /* iDiag queInfo */ 2841 debugfs_remove(phba->idiag_que_info); 2842 phba->idiag_que_info = NULL; 2843 } 2844 if (phba->idiag_pci_cfg) { 2845 /* iDiag pciCfg */ 2846 debugfs_remove(phba->idiag_pci_cfg); 2847 phba->idiag_pci_cfg = NULL; 2848 } 2849 2850 /* Finally remove the iDiag debugfs root */ 2851 if (phba->idiag_root) { 2852 /* iDiag root */ 2853 debugfs_remove(phba->idiag_root); 2854 phba->idiag_root = NULL; 2855 } 2856 } 2857 2858 if (phba->hba_debugfs_root) { 2859 debugfs_remove(phba->hba_debugfs_root); /* fnX */ 2860 phba->hba_debugfs_root = NULL; 2861 atomic_dec(&lpfc_debugfs_hba_count); 2862 } 2863 2864 if (atomic_read(&lpfc_debugfs_hba_count) == 0) { 2865 debugfs_remove(lpfc_debugfs_root); /* lpfc */ 2866 lpfc_debugfs_root = NULL; 2867 } 2868 } 2869 #endif 2870 return; 2871 } 2872