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/module.h> 24 #include <linux/dma-mapping.h> 25 #include <linux/idr.h> 26 #include <linux/interrupt.h> 27 #include <linux/kthread.h> 28 #include <linux/slab.h> 29 #include <linux/pci.h> 30 #include <linux/spinlock.h> 31 #include <linux/ctype.h> 32 33 #include <scsi/scsi.h> 34 #include <scsi/scsi_device.h> 35 #include <scsi/scsi_host.h> 36 #include <scsi/scsi_transport_fc.h> 37 38 #include "lpfc_hw4.h" 39 #include "lpfc_hw.h" 40 #include "lpfc_sli.h" 41 #include "lpfc_sli4.h" 42 #include "lpfc_nl.h" 43 #include "lpfc_disc.h" 44 #include "lpfc_scsi.h" 45 #include "lpfc.h" 46 #include "lpfc_logmsg.h" 47 #include "lpfc_crtn.h" 48 #include "lpfc_vport.h" 49 #include "lpfc_version.h" 50 #include "lpfc_compat.h" 51 #include "lpfc_debugfs.h" 52 #include "lpfc_bsg.h" 53 54 #ifdef CONFIG_SCSI_LPFC_DEBUG_FS 55 /* 56 * debugfs interface 57 * 58 * To access this interface the user should: 59 * # mount -t debugfs none /sys/kernel/debug 60 * 61 * The lpfc debugfs directory hierarchy is: 62 * /sys/kernel/debug/lpfc/fnX/vportY 63 * where X is the lpfc hba function unique_id 64 * where Y is the vport VPI on that hba 65 * 66 * Debugging services available per vport: 67 * discovery_trace 68 * This is an ACSII readable file that contains a trace of the last 69 * lpfc_debugfs_max_disc_trc events that happened on a specific vport. 70 * See lpfc_debugfs.h for different categories of discovery events. 71 * To enable the discovery trace, the following module parameters must be set: 72 * lpfc_debugfs_enable=1 Turns on lpfc debugfs filesystem support 73 * lpfc_debugfs_max_disc_trc=X Where X is the event trace depth for 74 * EACH vport. X MUST also be a power of 2. 75 * lpfc_debugfs_mask_disc_trc=Y Where Y is an event mask as defined in 76 * lpfc_debugfs.h . 77 * 78 * slow_ring_trace 79 * This is an ACSII readable file that contains a trace of the last 80 * lpfc_debugfs_max_slow_ring_trc events that happened on a specific HBA. 81 * To enable the slow ring trace, the following module parameters must be set: 82 * lpfc_debugfs_enable=1 Turns on lpfc debugfs filesystem support 83 * lpfc_debugfs_max_slow_ring_trc=X Where X is the event trace depth for 84 * the HBA. X MUST also be a power of 2. 85 */ 86 static int lpfc_debugfs_enable = 1; 87 module_param(lpfc_debugfs_enable, int, S_IRUGO); 88 MODULE_PARM_DESC(lpfc_debugfs_enable, "Enable debugfs services"); 89 90 /* This MUST be a power of 2 */ 91 static int lpfc_debugfs_max_disc_trc; 92 module_param(lpfc_debugfs_max_disc_trc, int, S_IRUGO); 93 MODULE_PARM_DESC(lpfc_debugfs_max_disc_trc, 94 "Set debugfs discovery trace depth"); 95 96 /* This MUST be a power of 2 */ 97 static int lpfc_debugfs_max_slow_ring_trc; 98 module_param(lpfc_debugfs_max_slow_ring_trc, int, S_IRUGO); 99 MODULE_PARM_DESC(lpfc_debugfs_max_slow_ring_trc, 100 "Set debugfs slow ring trace depth"); 101 102 static int lpfc_debugfs_mask_disc_trc; 103 module_param(lpfc_debugfs_mask_disc_trc, int, S_IRUGO); 104 MODULE_PARM_DESC(lpfc_debugfs_mask_disc_trc, 105 "Set debugfs discovery trace mask"); 106 107 #include <linux/debugfs.h> 108 109 static atomic_t lpfc_debugfs_seq_trc_cnt = ATOMIC_INIT(0); 110 static unsigned long lpfc_debugfs_start_time = 0L; 111 112 /* iDiag */ 113 static struct lpfc_idiag idiag; 114 115 /** 116 * lpfc_debugfs_disc_trc_data - Dump discovery logging to a buffer 117 * @vport: The vport to gather the log info from. 118 * @buf: The buffer to dump log into. 119 * @size: The maximum amount of data to process. 120 * 121 * Description: 122 * This routine gathers the lpfc discovery debugfs data from the @vport and 123 * dumps it to @buf up to @size number of bytes. It will start at the next entry 124 * in the log and process the log until the end of the buffer. Then it will 125 * gather from the beginning of the log and process until the current entry. 126 * 127 * Notes: 128 * Discovery logging will be disabled while while this routine dumps the log. 129 * 130 * Return Value: 131 * This routine returns the amount of bytes that were dumped into @buf and will 132 * not exceed @size. 133 **/ 134 static int 135 lpfc_debugfs_disc_trc_data(struct lpfc_vport *vport, char *buf, int size) 136 { 137 int i, index, len, enable; 138 uint32_t ms; 139 struct lpfc_debugfs_trc *dtp; 140 char *buffer; 141 142 buffer = kmalloc(LPFC_DEBUG_TRC_ENTRY_SIZE, GFP_KERNEL); 143 if (!buffer) 144 return 0; 145 146 enable = lpfc_debugfs_enable; 147 lpfc_debugfs_enable = 0; 148 149 len = 0; 150 index = (atomic_read(&vport->disc_trc_cnt) + 1) & 151 (lpfc_debugfs_max_disc_trc - 1); 152 for (i = index; i < lpfc_debugfs_max_disc_trc; i++) { 153 dtp = vport->disc_trc + i; 154 if (!dtp->fmt) 155 continue; 156 ms = jiffies_to_msecs(dtp->jif - lpfc_debugfs_start_time); 157 snprintf(buffer, 158 LPFC_DEBUG_TRC_ENTRY_SIZE, "%010d:%010d ms:%s\n", 159 dtp->seq_cnt, ms, dtp->fmt); 160 len += snprintf(buf+len, size-len, buffer, 161 dtp->data1, dtp->data2, dtp->data3); 162 } 163 for (i = 0; i < index; i++) { 164 dtp = vport->disc_trc + i; 165 if (!dtp->fmt) 166 continue; 167 ms = jiffies_to_msecs(dtp->jif - lpfc_debugfs_start_time); 168 snprintf(buffer, 169 LPFC_DEBUG_TRC_ENTRY_SIZE, "%010d:%010d ms:%s\n", 170 dtp->seq_cnt, ms, dtp->fmt); 171 len += snprintf(buf+len, size-len, buffer, 172 dtp->data1, dtp->data2, dtp->data3); 173 } 174 175 lpfc_debugfs_enable = enable; 176 kfree(buffer); 177 178 return len; 179 } 180 181 /** 182 * lpfc_debugfs_slow_ring_trc_data - Dump slow ring logging to a buffer 183 * @phba: The HBA to gather the log info from. 184 * @buf: The buffer to dump log into. 185 * @size: The maximum amount of data to process. 186 * 187 * Description: 188 * This routine gathers the lpfc slow ring debugfs data from the @phba and 189 * dumps it to @buf up to @size number of bytes. It will start at the next entry 190 * in the log and process the log until the end of the buffer. Then it will 191 * gather from the beginning of the log and process until the current entry. 192 * 193 * Notes: 194 * Slow ring logging will be disabled while while this routine dumps the log. 195 * 196 * Return Value: 197 * This routine returns the amount of bytes that were dumped into @buf and will 198 * not exceed @size. 199 **/ 200 static int 201 lpfc_debugfs_slow_ring_trc_data(struct lpfc_hba *phba, char *buf, int size) 202 { 203 int i, index, len, enable; 204 uint32_t ms; 205 struct lpfc_debugfs_trc *dtp; 206 char *buffer; 207 208 buffer = kmalloc(LPFC_DEBUG_TRC_ENTRY_SIZE, GFP_KERNEL); 209 if (!buffer) 210 return 0; 211 212 enable = lpfc_debugfs_enable; 213 lpfc_debugfs_enable = 0; 214 215 len = 0; 216 index = (atomic_read(&phba->slow_ring_trc_cnt) + 1) & 217 (lpfc_debugfs_max_slow_ring_trc - 1); 218 for (i = index; i < lpfc_debugfs_max_slow_ring_trc; i++) { 219 dtp = phba->slow_ring_trc + i; 220 if (!dtp->fmt) 221 continue; 222 ms = jiffies_to_msecs(dtp->jif - lpfc_debugfs_start_time); 223 snprintf(buffer, 224 LPFC_DEBUG_TRC_ENTRY_SIZE, "%010d:%010d ms:%s\n", 225 dtp->seq_cnt, ms, dtp->fmt); 226 len += snprintf(buf+len, size-len, buffer, 227 dtp->data1, dtp->data2, dtp->data3); 228 } 229 for (i = 0; i < index; i++) { 230 dtp = phba->slow_ring_trc + i; 231 if (!dtp->fmt) 232 continue; 233 ms = jiffies_to_msecs(dtp->jif - lpfc_debugfs_start_time); 234 snprintf(buffer, 235 LPFC_DEBUG_TRC_ENTRY_SIZE, "%010d:%010d ms:%s\n", 236 dtp->seq_cnt, ms, dtp->fmt); 237 len += snprintf(buf+len, size-len, buffer, 238 dtp->data1, dtp->data2, dtp->data3); 239 } 240 241 lpfc_debugfs_enable = enable; 242 kfree(buffer); 243 244 return len; 245 } 246 247 static int lpfc_debugfs_last_hbq = -1; 248 249 /** 250 * lpfc_debugfs_hbqinfo_data - Dump host buffer queue info to a buffer 251 * @phba: The HBA to gather host buffer info from. 252 * @buf: The buffer to dump log into. 253 * @size: The maximum amount of data to process. 254 * 255 * Description: 256 * This routine dumps the host buffer queue info from the @phba to @buf up to 257 * @size number of bytes. A header that describes the current hbq state will be 258 * dumped to @buf first and then info on each hbq entry will be dumped to @buf 259 * until @size bytes have been dumped or all the hbq info has been dumped. 260 * 261 * Notes: 262 * This routine will rotate through each configured HBQ each time called. 263 * 264 * Return Value: 265 * This routine returns the amount of bytes that were dumped into @buf and will 266 * not exceed @size. 267 **/ 268 static int 269 lpfc_debugfs_hbqinfo_data(struct lpfc_hba *phba, char *buf, int size) 270 { 271 int len = 0; 272 int cnt, i, j, found, posted, low; 273 uint32_t phys, raw_index, getidx; 274 struct lpfc_hbq_init *hip; 275 struct hbq_s *hbqs; 276 struct lpfc_hbq_entry *hbqe; 277 struct lpfc_dmabuf *d_buf; 278 struct hbq_dmabuf *hbq_buf; 279 280 if (phba->sli_rev != 3) 281 return 0; 282 cnt = LPFC_HBQINFO_SIZE; 283 spin_lock_irq(&phba->hbalock); 284 285 /* toggle between multiple hbqs, if any */ 286 i = lpfc_sli_hbq_count(); 287 if (i > 1) { 288 lpfc_debugfs_last_hbq++; 289 if (lpfc_debugfs_last_hbq >= i) 290 lpfc_debugfs_last_hbq = 0; 291 } 292 else 293 lpfc_debugfs_last_hbq = 0; 294 295 i = lpfc_debugfs_last_hbq; 296 297 len += snprintf(buf+len, size-len, "HBQ %d Info\n", i); 298 299 hbqs = &phba->hbqs[i]; 300 posted = 0; 301 list_for_each_entry(d_buf, &hbqs->hbq_buffer_list, list) 302 posted++; 303 304 hip = lpfc_hbq_defs[i]; 305 len += snprintf(buf+len, size-len, 306 "idx:%d prof:%d rn:%d bufcnt:%d icnt:%d acnt:%d posted %d\n", 307 hip->hbq_index, hip->profile, hip->rn, 308 hip->buffer_count, hip->init_count, hip->add_count, posted); 309 310 raw_index = phba->hbq_get[i]; 311 getidx = le32_to_cpu(raw_index); 312 len += snprintf(buf+len, size-len, 313 "entrys:%d bufcnt:%d Put:%d nPut:%d localGet:%d hbaGet:%d\n", 314 hbqs->entry_count, hbqs->buffer_count, hbqs->hbqPutIdx, 315 hbqs->next_hbqPutIdx, hbqs->local_hbqGetIdx, getidx); 316 317 hbqe = (struct lpfc_hbq_entry *) phba->hbqs[i].hbq_virt; 318 for (j=0; j<hbqs->entry_count; j++) { 319 len += snprintf(buf+len, size-len, 320 "%03d: %08x %04x %05x ", j, 321 le32_to_cpu(hbqe->bde.addrLow), 322 le32_to_cpu(hbqe->bde.tus.w), 323 le32_to_cpu(hbqe->buffer_tag)); 324 i = 0; 325 found = 0; 326 327 /* First calculate if slot has an associated posted buffer */ 328 low = hbqs->hbqPutIdx - posted; 329 if (low >= 0) { 330 if ((j >= hbqs->hbqPutIdx) || (j < low)) { 331 len += snprintf(buf+len, size-len, "Unused\n"); 332 goto skipit; 333 } 334 } 335 else { 336 if ((j >= hbqs->hbqPutIdx) && 337 (j < (hbqs->entry_count+low))) { 338 len += snprintf(buf+len, size-len, "Unused\n"); 339 goto skipit; 340 } 341 } 342 343 /* Get the Buffer info for the posted buffer */ 344 list_for_each_entry(d_buf, &hbqs->hbq_buffer_list, list) { 345 hbq_buf = container_of(d_buf, struct hbq_dmabuf, dbuf); 346 phys = ((uint64_t)hbq_buf->dbuf.phys & 0xffffffff); 347 if (phys == le32_to_cpu(hbqe->bde.addrLow)) { 348 len += snprintf(buf+len, size-len, 349 "Buf%d: %p %06x\n", i, 350 hbq_buf->dbuf.virt, hbq_buf->tag); 351 found = 1; 352 break; 353 } 354 i++; 355 } 356 if (!found) { 357 len += snprintf(buf+len, size-len, "No DMAinfo?\n"); 358 } 359 skipit: 360 hbqe++; 361 if (len > LPFC_HBQINFO_SIZE - 54) 362 break; 363 } 364 spin_unlock_irq(&phba->hbalock); 365 return len; 366 } 367 368 static int lpfc_debugfs_last_hba_slim_off; 369 370 /** 371 * lpfc_debugfs_dumpHBASlim_data - Dump HBA SLIM info to a buffer 372 * @phba: The HBA to gather SLIM info from. 373 * @buf: The buffer to dump log into. 374 * @size: The maximum amount of data to process. 375 * 376 * Description: 377 * This routine dumps the current contents of HBA SLIM for the HBA associated 378 * with @phba to @buf up to @size bytes of data. This is the raw HBA SLIM data. 379 * 380 * Notes: 381 * This routine will only dump up to 1024 bytes of data each time called and 382 * should be called multiple times to dump the entire HBA SLIM. 383 * 384 * Return Value: 385 * This routine returns the amount of bytes that were dumped into @buf and will 386 * not exceed @size. 387 **/ 388 static int 389 lpfc_debugfs_dumpHBASlim_data(struct lpfc_hba *phba, char *buf, int size) 390 { 391 int len = 0; 392 int i, off; 393 uint32_t *ptr; 394 char *buffer; 395 396 buffer = kmalloc(1024, GFP_KERNEL); 397 if (!buffer) 398 return 0; 399 400 off = 0; 401 spin_lock_irq(&phba->hbalock); 402 403 len += snprintf(buf+len, size-len, "HBA SLIM\n"); 404 lpfc_memcpy_from_slim(buffer, 405 phba->MBslimaddr + lpfc_debugfs_last_hba_slim_off, 1024); 406 407 ptr = (uint32_t *)&buffer[0]; 408 off = lpfc_debugfs_last_hba_slim_off; 409 410 /* Set it up for the next time */ 411 lpfc_debugfs_last_hba_slim_off += 1024; 412 if (lpfc_debugfs_last_hba_slim_off >= 4096) 413 lpfc_debugfs_last_hba_slim_off = 0; 414 415 i = 1024; 416 while (i > 0) { 417 len += snprintf(buf+len, size-len, 418 "%08x: %08x %08x %08x %08x %08x %08x %08x %08x\n", 419 off, *ptr, *(ptr+1), *(ptr+2), *(ptr+3), *(ptr+4), 420 *(ptr+5), *(ptr+6), *(ptr+7)); 421 ptr += 8; 422 i -= (8 * sizeof(uint32_t)); 423 off += (8 * sizeof(uint32_t)); 424 } 425 426 spin_unlock_irq(&phba->hbalock); 427 kfree(buffer); 428 429 return len; 430 } 431 432 /** 433 * lpfc_debugfs_dumpHostSlim_data - Dump host SLIM info to a buffer 434 * @phba: The HBA to gather Host SLIM info from. 435 * @buf: The buffer to dump log into. 436 * @size: The maximum amount of data to process. 437 * 438 * Description: 439 * This routine dumps the current contents of host SLIM for the host associated 440 * with @phba to @buf up to @size bytes of data. The dump will contain the 441 * Mailbox, PCB, Rings, and Registers that are located in host memory. 442 * 443 * Return Value: 444 * This routine returns the amount of bytes that were dumped into @buf and will 445 * not exceed @size. 446 **/ 447 static int 448 lpfc_debugfs_dumpHostSlim_data(struct lpfc_hba *phba, char *buf, int size) 449 { 450 int len = 0; 451 int i, off; 452 uint32_t word0, word1, word2, word3; 453 uint32_t *ptr; 454 struct lpfc_pgp *pgpp; 455 struct lpfc_sli *psli = &phba->sli; 456 struct lpfc_sli_ring *pring; 457 458 off = 0; 459 spin_lock_irq(&phba->hbalock); 460 461 len += snprintf(buf+len, size-len, "SLIM Mailbox\n"); 462 ptr = (uint32_t *)phba->slim2p.virt; 463 i = sizeof(MAILBOX_t); 464 while (i > 0) { 465 len += snprintf(buf+len, size-len, 466 "%08x: %08x %08x %08x %08x %08x %08x %08x %08x\n", 467 off, *ptr, *(ptr+1), *(ptr+2), *(ptr+3), *(ptr+4), 468 *(ptr+5), *(ptr+6), *(ptr+7)); 469 ptr += 8; 470 i -= (8 * sizeof(uint32_t)); 471 off += (8 * sizeof(uint32_t)); 472 } 473 474 len += snprintf(buf+len, size-len, "SLIM PCB\n"); 475 ptr = (uint32_t *)phba->pcb; 476 i = sizeof(PCB_t); 477 while (i > 0) { 478 len += snprintf(buf+len, size-len, 479 "%08x: %08x %08x %08x %08x %08x %08x %08x %08x\n", 480 off, *ptr, *(ptr+1), *(ptr+2), *(ptr+3), *(ptr+4), 481 *(ptr+5), *(ptr+6), *(ptr+7)); 482 ptr += 8; 483 i -= (8 * sizeof(uint32_t)); 484 off += (8 * sizeof(uint32_t)); 485 } 486 487 for (i = 0; i < 4; i++) { 488 pgpp = &phba->port_gp[i]; 489 pring = &psli->ring[i]; 490 len += snprintf(buf+len, size-len, 491 "Ring %d: CMD GetInx:%d (Max:%d Next:%d " 492 "Local:%d flg:x%x) RSP PutInx:%d Max:%d\n", 493 i, pgpp->cmdGetInx, pring->numCiocb, 494 pring->next_cmdidx, pring->local_getidx, 495 pring->flag, pgpp->rspPutInx, pring->numRiocb); 496 } 497 498 if (phba->sli_rev <= LPFC_SLI_REV3) { 499 word0 = readl(phba->HAregaddr); 500 word1 = readl(phba->CAregaddr); 501 word2 = readl(phba->HSregaddr); 502 word3 = readl(phba->HCregaddr); 503 len += snprintf(buf+len, size-len, "HA:%08x CA:%08x HS:%08x " 504 "HC:%08x\n", word0, word1, word2, word3); 505 } 506 spin_unlock_irq(&phba->hbalock); 507 return len; 508 } 509 510 /** 511 * lpfc_debugfs_nodelist_data - Dump target node list to a buffer 512 * @vport: The vport to gather target node info from. 513 * @buf: The buffer to dump log into. 514 * @size: The maximum amount of data to process. 515 * 516 * Description: 517 * This routine dumps the current target node list associated with @vport to 518 * @buf up to @size bytes of data. Each node entry in the dump will contain a 519 * node state, DID, WWPN, WWNN, RPI, flags, type, and other useful fields. 520 * 521 * Return Value: 522 * This routine returns the amount of bytes that were dumped into @buf and will 523 * not exceed @size. 524 **/ 525 static int 526 lpfc_debugfs_nodelist_data(struct lpfc_vport *vport, char *buf, int size) 527 { 528 int len = 0; 529 int cnt; 530 struct Scsi_Host *shost = lpfc_shost_from_vport(vport); 531 struct lpfc_nodelist *ndlp; 532 unsigned char *statep, *name; 533 534 cnt = (LPFC_NODELIST_SIZE / LPFC_NODELIST_ENTRY_SIZE); 535 536 spin_lock_irq(shost->host_lock); 537 list_for_each_entry(ndlp, &vport->fc_nodes, nlp_listp) { 538 if (!cnt) { 539 len += snprintf(buf+len, size-len, 540 "Missing Nodelist Entries\n"); 541 break; 542 } 543 cnt--; 544 switch (ndlp->nlp_state) { 545 case NLP_STE_UNUSED_NODE: 546 statep = "UNUSED"; 547 break; 548 case NLP_STE_PLOGI_ISSUE: 549 statep = "PLOGI "; 550 break; 551 case NLP_STE_ADISC_ISSUE: 552 statep = "ADISC "; 553 break; 554 case NLP_STE_REG_LOGIN_ISSUE: 555 statep = "REGLOG"; 556 break; 557 case NLP_STE_PRLI_ISSUE: 558 statep = "PRLI "; 559 break; 560 case NLP_STE_UNMAPPED_NODE: 561 statep = "UNMAP "; 562 break; 563 case NLP_STE_MAPPED_NODE: 564 statep = "MAPPED"; 565 break; 566 case NLP_STE_NPR_NODE: 567 statep = "NPR "; 568 break; 569 default: 570 statep = "UNKNOWN"; 571 } 572 len += snprintf(buf+len, size-len, "%s DID:x%06x ", 573 statep, ndlp->nlp_DID); 574 name = (unsigned char *)&ndlp->nlp_portname; 575 len += snprintf(buf+len, size-len, 576 "WWPN %02x:%02x:%02x:%02x:%02x:%02x:%02x:%02x ", 577 *name, *(name+1), *(name+2), *(name+3), 578 *(name+4), *(name+5), *(name+6), *(name+7)); 579 name = (unsigned char *)&ndlp->nlp_nodename; 580 len += snprintf(buf+len, size-len, 581 "WWNN %02x:%02x:%02x:%02x:%02x:%02x:%02x:%02x ", 582 *name, *(name+1), *(name+2), *(name+3), 583 *(name+4), *(name+5), *(name+6), *(name+7)); 584 len += snprintf(buf+len, size-len, "RPI:%03d flag:x%08x ", 585 ndlp->nlp_rpi, ndlp->nlp_flag); 586 if (!ndlp->nlp_type) 587 len += snprintf(buf+len, size-len, "UNKNOWN_TYPE "); 588 if (ndlp->nlp_type & NLP_FC_NODE) 589 len += snprintf(buf+len, size-len, "FC_NODE "); 590 if (ndlp->nlp_type & NLP_FABRIC) 591 len += snprintf(buf+len, size-len, "FABRIC "); 592 if (ndlp->nlp_type & NLP_FCP_TARGET) 593 len += snprintf(buf+len, size-len, "FCP_TGT sid:%d ", 594 ndlp->nlp_sid); 595 if (ndlp->nlp_type & NLP_FCP_INITIATOR) 596 len += snprintf(buf+len, size-len, "FCP_INITIATOR "); 597 len += snprintf(buf+len, size-len, "usgmap:%x ", 598 ndlp->nlp_usg_map); 599 len += snprintf(buf+len, size-len, "refcnt:%x", 600 atomic_read(&ndlp->kref.refcount)); 601 len += snprintf(buf+len, size-len, "\n"); 602 } 603 spin_unlock_irq(shost->host_lock); 604 return len; 605 } 606 #endif 607 608 /** 609 * lpfc_debugfs_disc_trc - Store discovery trace log 610 * @vport: The vport to associate this trace string with for retrieval. 611 * @mask: Log entry classification. 612 * @fmt: Format string to be displayed when dumping the log. 613 * @data1: 1st data parameter to be applied to @fmt. 614 * @data2: 2nd data parameter to be applied to @fmt. 615 * @data3: 3rd data parameter to be applied to @fmt. 616 * 617 * Description: 618 * This routine is used by the driver code to add a debugfs log entry to the 619 * discovery trace buffer associated with @vport. Only entries with a @mask that 620 * match the current debugfs discovery mask will be saved. Entries that do not 621 * match will be thrown away. @fmt, @data1, @data2, and @data3 are used like 622 * printf when displaying the log. 623 **/ 624 inline void 625 lpfc_debugfs_disc_trc(struct lpfc_vport *vport, int mask, char *fmt, 626 uint32_t data1, uint32_t data2, uint32_t data3) 627 { 628 #ifdef CONFIG_SCSI_LPFC_DEBUG_FS 629 struct lpfc_debugfs_trc *dtp; 630 int index; 631 632 if (!(lpfc_debugfs_mask_disc_trc & mask)) 633 return; 634 635 if (!lpfc_debugfs_enable || !lpfc_debugfs_max_disc_trc || 636 !vport || !vport->disc_trc) 637 return; 638 639 index = atomic_inc_return(&vport->disc_trc_cnt) & 640 (lpfc_debugfs_max_disc_trc - 1); 641 dtp = vport->disc_trc + index; 642 dtp->fmt = fmt; 643 dtp->data1 = data1; 644 dtp->data2 = data2; 645 dtp->data3 = data3; 646 dtp->seq_cnt = atomic_inc_return(&lpfc_debugfs_seq_trc_cnt); 647 dtp->jif = jiffies; 648 #endif 649 return; 650 } 651 652 /** 653 * lpfc_debugfs_slow_ring_trc - Store slow ring trace log 654 * @phba: The phba to associate this trace string with for retrieval. 655 * @fmt: Format string to be displayed when dumping the log. 656 * @data1: 1st data parameter to be applied to @fmt. 657 * @data2: 2nd data parameter to be applied to @fmt. 658 * @data3: 3rd data parameter to be applied to @fmt. 659 * 660 * Description: 661 * This routine is used by the driver code to add a debugfs log entry to the 662 * discovery trace buffer associated with @vport. @fmt, @data1, @data2, and 663 * @data3 are used like printf when displaying the log. 664 **/ 665 inline void 666 lpfc_debugfs_slow_ring_trc(struct lpfc_hba *phba, char *fmt, 667 uint32_t data1, uint32_t data2, uint32_t data3) 668 { 669 #ifdef CONFIG_SCSI_LPFC_DEBUG_FS 670 struct lpfc_debugfs_trc *dtp; 671 int index; 672 673 if (!lpfc_debugfs_enable || !lpfc_debugfs_max_slow_ring_trc || 674 !phba || !phba->slow_ring_trc) 675 return; 676 677 index = atomic_inc_return(&phba->slow_ring_trc_cnt) & 678 (lpfc_debugfs_max_slow_ring_trc - 1); 679 dtp = phba->slow_ring_trc + index; 680 dtp->fmt = fmt; 681 dtp->data1 = data1; 682 dtp->data2 = data2; 683 dtp->data3 = data3; 684 dtp->seq_cnt = atomic_inc_return(&lpfc_debugfs_seq_trc_cnt); 685 dtp->jif = jiffies; 686 #endif 687 return; 688 } 689 690 #ifdef CONFIG_SCSI_LPFC_DEBUG_FS 691 /** 692 * lpfc_debugfs_disc_trc_open - Open the discovery trace log 693 * @inode: The inode pointer that contains a vport pointer. 694 * @file: The file pointer to attach the log output. 695 * 696 * Description: 697 * This routine is the entry point for the debugfs open file operation. It gets 698 * the vport from the i_private field in @inode, allocates the necessary buffer 699 * for the log, fills the buffer from the in-memory log for this vport, and then 700 * returns a pointer to that log in the private_data field in @file. 701 * 702 * Returns: 703 * This function returns zero if successful. On error it will return an negative 704 * error value. 705 **/ 706 static int 707 lpfc_debugfs_disc_trc_open(struct inode *inode, struct file *file) 708 { 709 struct lpfc_vport *vport = inode->i_private; 710 struct lpfc_debug *debug; 711 int size; 712 int rc = -ENOMEM; 713 714 if (!lpfc_debugfs_max_disc_trc) { 715 rc = -ENOSPC; 716 goto out; 717 } 718 719 debug = kmalloc(sizeof(*debug), GFP_KERNEL); 720 if (!debug) 721 goto out; 722 723 /* Round to page boundary */ 724 size = (lpfc_debugfs_max_disc_trc * LPFC_DEBUG_TRC_ENTRY_SIZE); 725 size = PAGE_ALIGN(size); 726 727 debug->buffer = kmalloc(size, GFP_KERNEL); 728 if (!debug->buffer) { 729 kfree(debug); 730 goto out; 731 } 732 733 debug->len = lpfc_debugfs_disc_trc_data(vport, debug->buffer, size); 734 file->private_data = debug; 735 736 rc = 0; 737 out: 738 return rc; 739 } 740 741 /** 742 * lpfc_debugfs_slow_ring_trc_open - Open the Slow Ring trace log 743 * @inode: The inode pointer that contains a vport pointer. 744 * @file: The file pointer to attach the log output. 745 * 746 * Description: 747 * This routine is the entry point for the debugfs open file operation. It gets 748 * the vport from the i_private field in @inode, allocates the necessary buffer 749 * for the log, fills the buffer from the in-memory log for this vport, and then 750 * returns a pointer to that log in the private_data field in @file. 751 * 752 * Returns: 753 * This function returns zero if successful. On error it will return an negative 754 * error value. 755 **/ 756 static int 757 lpfc_debugfs_slow_ring_trc_open(struct inode *inode, struct file *file) 758 { 759 struct lpfc_hba *phba = inode->i_private; 760 struct lpfc_debug *debug; 761 int size; 762 int rc = -ENOMEM; 763 764 if (!lpfc_debugfs_max_slow_ring_trc) { 765 rc = -ENOSPC; 766 goto out; 767 } 768 769 debug = kmalloc(sizeof(*debug), GFP_KERNEL); 770 if (!debug) 771 goto out; 772 773 /* Round to page boundary */ 774 size = (lpfc_debugfs_max_slow_ring_trc * LPFC_DEBUG_TRC_ENTRY_SIZE); 775 size = PAGE_ALIGN(size); 776 777 debug->buffer = kmalloc(size, GFP_KERNEL); 778 if (!debug->buffer) { 779 kfree(debug); 780 goto out; 781 } 782 783 debug->len = lpfc_debugfs_slow_ring_trc_data(phba, debug->buffer, size); 784 file->private_data = debug; 785 786 rc = 0; 787 out: 788 return rc; 789 } 790 791 /** 792 * lpfc_debugfs_hbqinfo_open - Open the hbqinfo debugfs buffer 793 * @inode: The inode pointer that contains a vport pointer. 794 * @file: The file pointer to attach the log output. 795 * 796 * Description: 797 * This routine is the entry point for the debugfs open file operation. It gets 798 * the vport from the i_private field in @inode, allocates the necessary buffer 799 * for the log, fills the buffer from the in-memory log for this vport, and then 800 * returns a pointer to that log in the private_data field in @file. 801 * 802 * Returns: 803 * This function returns zero if successful. On error it will return an negative 804 * error value. 805 **/ 806 static int 807 lpfc_debugfs_hbqinfo_open(struct inode *inode, struct file *file) 808 { 809 struct lpfc_hba *phba = inode->i_private; 810 struct lpfc_debug *debug; 811 int rc = -ENOMEM; 812 813 debug = kmalloc(sizeof(*debug), GFP_KERNEL); 814 if (!debug) 815 goto out; 816 817 /* Round to page boundary */ 818 debug->buffer = kmalloc(LPFC_HBQINFO_SIZE, GFP_KERNEL); 819 if (!debug->buffer) { 820 kfree(debug); 821 goto out; 822 } 823 824 debug->len = lpfc_debugfs_hbqinfo_data(phba, debug->buffer, 825 LPFC_HBQINFO_SIZE); 826 file->private_data = debug; 827 828 rc = 0; 829 out: 830 return rc; 831 } 832 833 /** 834 * lpfc_debugfs_dumpHBASlim_open - Open the Dump HBA SLIM debugfs buffer 835 * @inode: The inode pointer that contains a vport pointer. 836 * @file: The file pointer to attach the log output. 837 * 838 * Description: 839 * This routine is the entry point for the debugfs open file operation. It gets 840 * the vport from the i_private field in @inode, allocates the necessary buffer 841 * for the log, fills the buffer from the in-memory log for this vport, and then 842 * returns a pointer to that log in the private_data field in @file. 843 * 844 * Returns: 845 * This function returns zero if successful. On error it will return an negative 846 * error value. 847 **/ 848 static int 849 lpfc_debugfs_dumpHBASlim_open(struct inode *inode, struct file *file) 850 { 851 struct lpfc_hba *phba = inode->i_private; 852 struct lpfc_debug *debug; 853 int rc = -ENOMEM; 854 855 debug = kmalloc(sizeof(*debug), GFP_KERNEL); 856 if (!debug) 857 goto out; 858 859 /* Round to page boundary */ 860 debug->buffer = kmalloc(LPFC_DUMPHBASLIM_SIZE, GFP_KERNEL); 861 if (!debug->buffer) { 862 kfree(debug); 863 goto out; 864 } 865 866 debug->len = lpfc_debugfs_dumpHBASlim_data(phba, debug->buffer, 867 LPFC_DUMPHBASLIM_SIZE); 868 file->private_data = debug; 869 870 rc = 0; 871 out: 872 return rc; 873 } 874 875 /** 876 * lpfc_debugfs_dumpHostSlim_open - Open the Dump Host SLIM debugfs buffer 877 * @inode: The inode pointer that contains a vport pointer. 878 * @file: The file pointer to attach the log output. 879 * 880 * Description: 881 * This routine is the entry point for the debugfs open file operation. It gets 882 * the vport from the i_private field in @inode, allocates the necessary buffer 883 * for the log, fills the buffer from the in-memory log for this vport, and then 884 * returns a pointer to that log in the private_data field in @file. 885 * 886 * Returns: 887 * This function returns zero if successful. On error it will return an negative 888 * error value. 889 **/ 890 static int 891 lpfc_debugfs_dumpHostSlim_open(struct inode *inode, struct file *file) 892 { 893 struct lpfc_hba *phba = inode->i_private; 894 struct lpfc_debug *debug; 895 int rc = -ENOMEM; 896 897 debug = kmalloc(sizeof(*debug), GFP_KERNEL); 898 if (!debug) 899 goto out; 900 901 /* Round to page boundary */ 902 debug->buffer = kmalloc(LPFC_DUMPHOSTSLIM_SIZE, GFP_KERNEL); 903 if (!debug->buffer) { 904 kfree(debug); 905 goto out; 906 } 907 908 debug->len = lpfc_debugfs_dumpHostSlim_data(phba, debug->buffer, 909 LPFC_DUMPHOSTSLIM_SIZE); 910 file->private_data = debug; 911 912 rc = 0; 913 out: 914 return rc; 915 } 916 917 static int 918 lpfc_debugfs_dumpData_open(struct inode *inode, struct file *file) 919 { 920 struct lpfc_debug *debug; 921 int rc = -ENOMEM; 922 923 if (!_dump_buf_data) 924 return -EBUSY; 925 926 debug = kmalloc(sizeof(*debug), GFP_KERNEL); 927 if (!debug) 928 goto out; 929 930 /* Round to page boundary */ 931 printk(KERN_ERR "9059 BLKGRD: %s: _dump_buf_data=0x%p\n", 932 __func__, _dump_buf_data); 933 debug->buffer = _dump_buf_data; 934 if (!debug->buffer) { 935 kfree(debug); 936 goto out; 937 } 938 939 debug->len = (1 << _dump_buf_data_order) << PAGE_SHIFT; 940 file->private_data = debug; 941 942 rc = 0; 943 out: 944 return rc; 945 } 946 947 static int 948 lpfc_debugfs_dumpDif_open(struct inode *inode, struct file *file) 949 { 950 struct lpfc_debug *debug; 951 int rc = -ENOMEM; 952 953 if (!_dump_buf_dif) 954 return -EBUSY; 955 956 debug = kmalloc(sizeof(*debug), GFP_KERNEL); 957 if (!debug) 958 goto out; 959 960 /* Round to page boundary */ 961 printk(KERN_ERR "9060 BLKGRD: %s: _dump_buf_dif=0x%p file=%s\n", 962 __func__, _dump_buf_dif, file->f_dentry->d_name.name); 963 debug->buffer = _dump_buf_dif; 964 if (!debug->buffer) { 965 kfree(debug); 966 goto out; 967 } 968 969 debug->len = (1 << _dump_buf_dif_order) << PAGE_SHIFT; 970 file->private_data = debug; 971 972 rc = 0; 973 out: 974 return rc; 975 } 976 977 static ssize_t 978 lpfc_debugfs_dumpDataDif_write(struct file *file, const char __user *buf, 979 size_t nbytes, loff_t *ppos) 980 { 981 /* 982 * The Data/DIF buffers only save one failing IO 983 * The write op is used as a reset mechanism after an IO has 984 * already been saved to the next one can be saved 985 */ 986 spin_lock(&_dump_buf_lock); 987 988 memset((void *)_dump_buf_data, 0, 989 ((1 << PAGE_SHIFT) << _dump_buf_data_order)); 990 memset((void *)_dump_buf_dif, 0, 991 ((1 << PAGE_SHIFT) << _dump_buf_dif_order)); 992 993 _dump_buf_done = 0; 994 995 spin_unlock(&_dump_buf_lock); 996 997 return nbytes; 998 } 999 1000 static int 1001 lpfc_debugfs_dif_err_open(struct inode *inode, struct file *file) 1002 { 1003 file->private_data = inode->i_private; 1004 return 0; 1005 } 1006 1007 static ssize_t 1008 lpfc_debugfs_dif_err_read(struct file *file, char __user *buf, 1009 size_t nbytes, loff_t *ppos) 1010 { 1011 struct dentry *dent = file->f_dentry; 1012 struct lpfc_hba *phba = file->private_data; 1013 char cbuf[16]; 1014 int cnt = 0; 1015 1016 if (dent == phba->debug_writeGuard) 1017 cnt = snprintf(cbuf, 16, "%u\n", phba->lpfc_injerr_wgrd_cnt); 1018 else if (dent == phba->debug_writeApp) 1019 cnt = snprintf(cbuf, 16, "%u\n", phba->lpfc_injerr_wapp_cnt); 1020 else if (dent == phba->debug_writeRef) 1021 cnt = snprintf(cbuf, 16, "%u\n", phba->lpfc_injerr_wref_cnt); 1022 else if (dent == phba->debug_readGuard) 1023 cnt = snprintf(cbuf, 16, "%u\n", phba->lpfc_injerr_rgrd_cnt); 1024 else if (dent == phba->debug_readApp) 1025 cnt = snprintf(cbuf, 16, "%u\n", phba->lpfc_injerr_rapp_cnt); 1026 else if (dent == phba->debug_readRef) 1027 cnt = snprintf(cbuf, 16, "%u\n", phba->lpfc_injerr_rref_cnt); 1028 else if (dent == phba->debug_InjErrLBA) 1029 cnt = snprintf(cbuf, 16, "0x%lx\n", 1030 (unsigned long) phba->lpfc_injerr_lba); 1031 else 1032 lpfc_printf_log(phba, KERN_ERR, LOG_INIT, 1033 "0547 Unknown debugfs error injection entry\n"); 1034 1035 return simple_read_from_buffer(buf, nbytes, ppos, &cbuf, cnt); 1036 } 1037 1038 static ssize_t 1039 lpfc_debugfs_dif_err_write(struct file *file, const char __user *buf, 1040 size_t nbytes, loff_t *ppos) 1041 { 1042 struct dentry *dent = file->f_dentry; 1043 struct lpfc_hba *phba = file->private_data; 1044 char dstbuf[32]; 1045 unsigned long tmp; 1046 int size; 1047 1048 memset(dstbuf, 0, 32); 1049 size = (nbytes < 32) ? nbytes : 32; 1050 if (copy_from_user(dstbuf, buf, size)) 1051 return 0; 1052 1053 if (strict_strtoul(dstbuf, 0, &tmp)) 1054 return 0; 1055 1056 if (dent == phba->debug_writeGuard) 1057 phba->lpfc_injerr_wgrd_cnt = (uint32_t)tmp; 1058 else if (dent == phba->debug_writeApp) 1059 phba->lpfc_injerr_wapp_cnt = (uint32_t)tmp; 1060 else if (dent == phba->debug_writeRef) 1061 phba->lpfc_injerr_wref_cnt = (uint32_t)tmp; 1062 else if (dent == phba->debug_readGuard) 1063 phba->lpfc_injerr_rgrd_cnt = (uint32_t)tmp; 1064 else if (dent == phba->debug_readApp) 1065 phba->lpfc_injerr_rapp_cnt = (uint32_t)tmp; 1066 else if (dent == phba->debug_readRef) 1067 phba->lpfc_injerr_rref_cnt = (uint32_t)tmp; 1068 else if (dent == phba->debug_InjErrLBA) 1069 phba->lpfc_injerr_lba = (sector_t)tmp; 1070 else 1071 lpfc_printf_log(phba, KERN_ERR, LOG_INIT, 1072 "0548 Unknown debugfs error injection entry\n"); 1073 1074 return nbytes; 1075 } 1076 1077 static int 1078 lpfc_debugfs_dif_err_release(struct inode *inode, struct file *file) 1079 { 1080 return 0; 1081 } 1082 1083 /** 1084 * lpfc_debugfs_nodelist_open - Open the nodelist debugfs file 1085 * @inode: The inode pointer that contains a vport pointer. 1086 * @file: The file pointer to attach the log output. 1087 * 1088 * Description: 1089 * This routine is the entry point for the debugfs open file operation. It gets 1090 * the vport from the i_private field in @inode, allocates the necessary buffer 1091 * for the log, fills the buffer from the in-memory log for this vport, and then 1092 * returns a pointer to that log in the private_data field in @file. 1093 * 1094 * Returns: 1095 * This function returns zero if successful. On error it will return an negative 1096 * error value. 1097 **/ 1098 static int 1099 lpfc_debugfs_nodelist_open(struct inode *inode, struct file *file) 1100 { 1101 struct lpfc_vport *vport = inode->i_private; 1102 struct lpfc_debug *debug; 1103 int rc = -ENOMEM; 1104 1105 debug = kmalloc(sizeof(*debug), GFP_KERNEL); 1106 if (!debug) 1107 goto out; 1108 1109 /* Round to page boundary */ 1110 debug->buffer = kmalloc(LPFC_NODELIST_SIZE, GFP_KERNEL); 1111 if (!debug->buffer) { 1112 kfree(debug); 1113 goto out; 1114 } 1115 1116 debug->len = lpfc_debugfs_nodelist_data(vport, debug->buffer, 1117 LPFC_NODELIST_SIZE); 1118 file->private_data = debug; 1119 1120 rc = 0; 1121 out: 1122 return rc; 1123 } 1124 1125 /** 1126 * lpfc_debugfs_lseek - Seek through a debugfs file 1127 * @file: The file pointer to seek through. 1128 * @off: The offset to seek to or the amount to seek by. 1129 * @whence: Indicates how to seek. 1130 * 1131 * Description: 1132 * This routine is the entry point for the debugfs lseek file operation. The 1133 * @whence parameter indicates whether @off is the offset to directly seek to, 1134 * or if it is a value to seek forward or reverse by. This function figures out 1135 * what the new offset of the debugfs file will be and assigns that value to the 1136 * f_pos field of @file. 1137 * 1138 * Returns: 1139 * This function returns the new offset if successful and returns a negative 1140 * error if unable to process the seek. 1141 **/ 1142 static loff_t 1143 lpfc_debugfs_lseek(struct file *file, loff_t off, int whence) 1144 { 1145 struct lpfc_debug *debug; 1146 loff_t pos = -1; 1147 1148 debug = file->private_data; 1149 1150 switch (whence) { 1151 case 0: 1152 pos = off; 1153 break; 1154 case 1: 1155 pos = file->f_pos + off; 1156 break; 1157 case 2: 1158 pos = debug->len - off; 1159 } 1160 return (pos < 0 || pos > debug->len) ? -EINVAL : (file->f_pos = pos); 1161 } 1162 1163 /** 1164 * lpfc_debugfs_read - Read a debugfs file 1165 * @file: The file pointer to read from. 1166 * @buf: The buffer to copy the data to. 1167 * @nbytes: The number of bytes to read. 1168 * @ppos: The position in the file to start reading from. 1169 * 1170 * Description: 1171 * This routine reads data from from the buffer indicated in the private_data 1172 * field of @file. It will start reading at @ppos and copy up to @nbytes of 1173 * data to @buf. 1174 * 1175 * Returns: 1176 * This function returns the amount of data that was read (this could be less 1177 * than @nbytes if the end of the file was reached) or a negative error value. 1178 **/ 1179 static ssize_t 1180 lpfc_debugfs_read(struct file *file, char __user *buf, 1181 size_t nbytes, loff_t *ppos) 1182 { 1183 struct lpfc_debug *debug = file->private_data; 1184 1185 return simple_read_from_buffer(buf, nbytes, ppos, debug->buffer, 1186 debug->len); 1187 } 1188 1189 /** 1190 * lpfc_debugfs_release - Release the buffer used to store debugfs file data 1191 * @inode: The inode pointer that contains a vport pointer. (unused) 1192 * @file: The file pointer that contains the buffer to release. 1193 * 1194 * Description: 1195 * This routine frees the buffer that was allocated when the debugfs file was 1196 * opened. 1197 * 1198 * Returns: 1199 * This function returns zero. 1200 **/ 1201 static int 1202 lpfc_debugfs_release(struct inode *inode, struct file *file) 1203 { 1204 struct lpfc_debug *debug = file->private_data; 1205 1206 kfree(debug->buffer); 1207 kfree(debug); 1208 1209 return 0; 1210 } 1211 1212 static int 1213 lpfc_debugfs_dumpDataDif_release(struct inode *inode, struct file *file) 1214 { 1215 struct lpfc_debug *debug = file->private_data; 1216 1217 debug->buffer = NULL; 1218 kfree(debug); 1219 1220 return 0; 1221 } 1222 1223 /* 1224 * --------------------------------- 1225 * iDiag debugfs file access methods 1226 * --------------------------------- 1227 * 1228 * All access methods are through the proper SLI4 PCI function's debugfs 1229 * iDiag directory: 1230 * 1231 * /sys/kernel/debug/lpfc/fn<#>/iDiag 1232 */ 1233 1234 /** 1235 * lpfc_idiag_cmd_get - Get and parse idiag debugfs comands from user space 1236 * @buf: The pointer to the user space buffer. 1237 * @nbytes: The number of bytes in the user space buffer. 1238 * @idiag_cmd: pointer to the idiag command struct. 1239 * 1240 * This routine reads data from debugfs user space buffer and parses the 1241 * buffer for getting the idiag command and arguments. The while space in 1242 * between the set of data is used as the parsing separator. 1243 * 1244 * This routine returns 0 when successful, it returns proper error code 1245 * back to the user space in error conditions. 1246 */ 1247 static int lpfc_idiag_cmd_get(const char __user *buf, size_t nbytes, 1248 struct lpfc_idiag_cmd *idiag_cmd) 1249 { 1250 char mybuf[64]; 1251 char *pbuf, *step_str; 1252 int i; 1253 size_t bsize; 1254 1255 /* Protect copy from user */ 1256 if (!access_ok(VERIFY_READ, buf, nbytes)) 1257 return -EFAULT; 1258 1259 memset(mybuf, 0, sizeof(mybuf)); 1260 memset(idiag_cmd, 0, sizeof(*idiag_cmd)); 1261 bsize = min(nbytes, (sizeof(mybuf)-1)); 1262 1263 if (copy_from_user(mybuf, buf, bsize)) 1264 return -EFAULT; 1265 pbuf = &mybuf[0]; 1266 step_str = strsep(&pbuf, "\t "); 1267 1268 /* The opcode must present */ 1269 if (!step_str) 1270 return -EINVAL; 1271 1272 idiag_cmd->opcode = simple_strtol(step_str, NULL, 0); 1273 if (idiag_cmd->opcode == 0) 1274 return -EINVAL; 1275 1276 for (i = 0; i < LPFC_IDIAG_CMD_DATA_SIZE; i++) { 1277 step_str = strsep(&pbuf, "\t "); 1278 if (!step_str) 1279 return i; 1280 idiag_cmd->data[i] = simple_strtol(step_str, NULL, 0); 1281 } 1282 return i; 1283 } 1284 1285 /** 1286 * lpfc_idiag_open - idiag open debugfs 1287 * @inode: The inode pointer that contains a pointer to phba. 1288 * @file: The file pointer to attach the file operation. 1289 * 1290 * Description: 1291 * This routine is the entry point for the debugfs open file operation. It 1292 * gets the reference to phba from the i_private field in @inode, it then 1293 * allocates buffer for the file operation, performs the necessary PCI config 1294 * space read into the allocated buffer according to the idiag user command 1295 * setup, and then returns a pointer to buffer in the private_data field in 1296 * @file. 1297 * 1298 * Returns: 1299 * This function returns zero if successful. On error it will return an 1300 * negative error value. 1301 **/ 1302 static int 1303 lpfc_idiag_open(struct inode *inode, struct file *file) 1304 { 1305 struct lpfc_debug *debug; 1306 1307 debug = kmalloc(sizeof(*debug), GFP_KERNEL); 1308 if (!debug) 1309 return -ENOMEM; 1310 1311 debug->i_private = inode->i_private; 1312 debug->buffer = NULL; 1313 file->private_data = debug; 1314 1315 return 0; 1316 } 1317 1318 /** 1319 * lpfc_idiag_release - Release idiag access file operation 1320 * @inode: The inode pointer that contains a vport pointer. (unused) 1321 * @file: The file pointer that contains the buffer to release. 1322 * 1323 * Description: 1324 * This routine is the generic release routine for the idiag access file 1325 * operation, it frees the buffer that was allocated when the debugfs file 1326 * was opened. 1327 * 1328 * Returns: 1329 * This function returns zero. 1330 **/ 1331 static int 1332 lpfc_idiag_release(struct inode *inode, struct file *file) 1333 { 1334 struct lpfc_debug *debug = file->private_data; 1335 1336 /* Free the buffers to the file operation */ 1337 kfree(debug->buffer); 1338 kfree(debug); 1339 1340 return 0; 1341 } 1342 1343 /** 1344 * lpfc_idiag_cmd_release - Release idiag cmd access file operation 1345 * @inode: The inode pointer that contains a vport pointer. (unused) 1346 * @file: The file pointer that contains the buffer to release. 1347 * 1348 * Description: 1349 * This routine frees the buffer that was allocated when the debugfs file 1350 * was opened. It also reset the fields in the idiag command struct in the 1351 * case of command for write operation. 1352 * 1353 * Returns: 1354 * This function returns zero. 1355 **/ 1356 static int 1357 lpfc_idiag_cmd_release(struct inode *inode, struct file *file) 1358 { 1359 struct lpfc_debug *debug = file->private_data; 1360 1361 if (debug->op == LPFC_IDIAG_OP_WR) { 1362 switch (idiag.cmd.opcode) { 1363 case LPFC_IDIAG_CMD_PCICFG_WR: 1364 case LPFC_IDIAG_CMD_PCICFG_ST: 1365 case LPFC_IDIAG_CMD_PCICFG_CL: 1366 case LPFC_IDIAG_CMD_QUEACC_WR: 1367 case LPFC_IDIAG_CMD_QUEACC_ST: 1368 case LPFC_IDIAG_CMD_QUEACC_CL: 1369 memset(&idiag, 0, sizeof(idiag)); 1370 break; 1371 default: 1372 break; 1373 } 1374 } 1375 1376 /* Free the buffers to the file operation */ 1377 kfree(debug->buffer); 1378 kfree(debug); 1379 1380 return 0; 1381 } 1382 1383 /** 1384 * lpfc_idiag_pcicfg_read - idiag debugfs read pcicfg 1385 * @file: The file pointer to read from. 1386 * @buf: The buffer to copy the data to. 1387 * @nbytes: The number of bytes to read. 1388 * @ppos: The position in the file to start reading from. 1389 * 1390 * Description: 1391 * This routine reads data from the @phba pci config space according to the 1392 * idiag command, and copies to user @buf. Depending on the PCI config space 1393 * read command setup, it does either a single register read of a byte 1394 * (8 bits), a word (16 bits), or a dword (32 bits) or browsing through all 1395 * registers from the 4K extended PCI config space. 1396 * 1397 * Returns: 1398 * This function returns the amount of data that was read (this could be less 1399 * than @nbytes if the end of the file was reached) or a negative error value. 1400 **/ 1401 static ssize_t 1402 lpfc_idiag_pcicfg_read(struct file *file, char __user *buf, size_t nbytes, 1403 loff_t *ppos) 1404 { 1405 struct lpfc_debug *debug = file->private_data; 1406 struct lpfc_hba *phba = (struct lpfc_hba *)debug->i_private; 1407 int offset_label, offset, len = 0, index = LPFC_PCI_CFG_RD_SIZE; 1408 int where, count; 1409 char *pbuffer; 1410 struct pci_dev *pdev; 1411 uint32_t u32val; 1412 uint16_t u16val; 1413 uint8_t u8val; 1414 1415 pdev = phba->pcidev; 1416 if (!pdev) 1417 return 0; 1418 1419 /* This is a user read operation */ 1420 debug->op = LPFC_IDIAG_OP_RD; 1421 1422 if (!debug->buffer) 1423 debug->buffer = kmalloc(LPFC_PCI_CFG_SIZE, GFP_KERNEL); 1424 if (!debug->buffer) 1425 return 0; 1426 pbuffer = debug->buffer; 1427 1428 if (*ppos) 1429 return 0; 1430 1431 if (idiag.cmd.opcode == LPFC_IDIAG_CMD_PCICFG_RD) { 1432 where = idiag.cmd.data[IDIAG_PCICFG_WHERE_INDX]; 1433 count = idiag.cmd.data[IDIAG_PCICFG_COUNT_INDX]; 1434 } else 1435 return 0; 1436 1437 /* Read single PCI config space register */ 1438 switch (count) { 1439 case SIZE_U8: /* byte (8 bits) */ 1440 pci_read_config_byte(pdev, where, &u8val); 1441 len += snprintf(pbuffer+len, LPFC_PCI_CFG_SIZE-len, 1442 "%03x: %02x\n", where, u8val); 1443 break; 1444 case SIZE_U16: /* word (16 bits) */ 1445 pci_read_config_word(pdev, where, &u16val); 1446 len += snprintf(pbuffer+len, LPFC_PCI_CFG_SIZE-len, 1447 "%03x: %04x\n", where, u16val); 1448 break; 1449 case SIZE_U32: /* double word (32 bits) */ 1450 pci_read_config_dword(pdev, where, &u32val); 1451 len += snprintf(pbuffer+len, LPFC_PCI_CFG_SIZE-len, 1452 "%03x: %08x\n", where, u32val); 1453 break; 1454 case LPFC_PCI_CFG_BROWSE: /* browse all */ 1455 goto pcicfg_browse; 1456 break; 1457 default: 1458 /* illegal count */ 1459 len = 0; 1460 break; 1461 } 1462 return simple_read_from_buffer(buf, nbytes, ppos, pbuffer, len); 1463 1464 pcicfg_browse: 1465 1466 /* Browse all PCI config space registers */ 1467 offset_label = idiag.offset.last_rd; 1468 offset = offset_label; 1469 1470 /* Read PCI config space */ 1471 len += snprintf(pbuffer+len, LPFC_PCI_CFG_SIZE-len, 1472 "%03x: ", offset_label); 1473 while (index > 0) { 1474 pci_read_config_dword(pdev, offset, &u32val); 1475 len += snprintf(pbuffer+len, LPFC_PCI_CFG_SIZE-len, 1476 "%08x ", u32val); 1477 offset += sizeof(uint32_t); 1478 if (offset >= LPFC_PCI_CFG_SIZE) { 1479 len += snprintf(pbuffer+len, 1480 LPFC_PCI_CFG_SIZE-len, "\n"); 1481 break; 1482 } 1483 index -= sizeof(uint32_t); 1484 if (!index) 1485 len += snprintf(pbuffer+len, LPFC_PCI_CFG_SIZE-len, 1486 "\n"); 1487 else if (!(index % (8 * sizeof(uint32_t)))) { 1488 offset_label += (8 * sizeof(uint32_t)); 1489 len += snprintf(pbuffer+len, LPFC_PCI_CFG_SIZE-len, 1490 "\n%03x: ", offset_label); 1491 } 1492 } 1493 1494 /* Set up the offset for next portion of pci cfg read */ 1495 if (index == 0) { 1496 idiag.offset.last_rd += LPFC_PCI_CFG_RD_SIZE; 1497 if (idiag.offset.last_rd >= LPFC_PCI_CFG_SIZE) 1498 idiag.offset.last_rd = 0; 1499 } else 1500 idiag.offset.last_rd = 0; 1501 1502 return simple_read_from_buffer(buf, nbytes, ppos, pbuffer, len); 1503 } 1504 1505 /** 1506 * lpfc_idiag_pcicfg_write - Syntax check and set up idiag pcicfg commands 1507 * @file: The file pointer to read from. 1508 * @buf: The buffer to copy the user data from. 1509 * @nbytes: The number of bytes to get. 1510 * @ppos: The position in the file to start reading from. 1511 * 1512 * This routine get the debugfs idiag command struct from user space and 1513 * then perform the syntax check for PCI config space read or write command 1514 * accordingly. In the case of PCI config space read command, it sets up 1515 * the command in the idiag command struct for the debugfs read operation. 1516 * In the case of PCI config space write operation, it executes the write 1517 * operation into the PCI config space accordingly. 1518 * 1519 * It returns the @nbytges passing in from debugfs user space when successful. 1520 * In case of error conditions, it returns proper error code back to the user 1521 * space. 1522 */ 1523 static ssize_t 1524 lpfc_idiag_pcicfg_write(struct file *file, const char __user *buf, 1525 size_t nbytes, loff_t *ppos) 1526 { 1527 struct lpfc_debug *debug = file->private_data; 1528 struct lpfc_hba *phba = (struct lpfc_hba *)debug->i_private; 1529 uint32_t where, value, count; 1530 uint32_t u32val; 1531 uint16_t u16val; 1532 uint8_t u8val; 1533 struct pci_dev *pdev; 1534 int rc; 1535 1536 pdev = phba->pcidev; 1537 if (!pdev) 1538 return -EFAULT; 1539 1540 /* This is a user write operation */ 1541 debug->op = LPFC_IDIAG_OP_WR; 1542 1543 rc = lpfc_idiag_cmd_get(buf, nbytes, &idiag.cmd); 1544 if (rc < 0) 1545 return rc; 1546 1547 if (idiag.cmd.opcode == LPFC_IDIAG_CMD_PCICFG_RD) { 1548 /* Sanity check on PCI config read command line arguments */ 1549 if (rc != LPFC_PCI_CFG_RD_CMD_ARG) 1550 goto error_out; 1551 /* Read command from PCI config space, set up command fields */ 1552 where = idiag.cmd.data[IDIAG_PCICFG_WHERE_INDX]; 1553 count = idiag.cmd.data[IDIAG_PCICFG_COUNT_INDX]; 1554 if (count == LPFC_PCI_CFG_BROWSE) { 1555 if (where % sizeof(uint32_t)) 1556 goto error_out; 1557 /* Starting offset to browse */ 1558 idiag.offset.last_rd = where; 1559 } else if ((count != sizeof(uint8_t)) && 1560 (count != sizeof(uint16_t)) && 1561 (count != sizeof(uint32_t))) 1562 goto error_out; 1563 if (count == sizeof(uint8_t)) { 1564 if (where > LPFC_PCI_CFG_SIZE - sizeof(uint8_t)) 1565 goto error_out; 1566 if (where % sizeof(uint8_t)) 1567 goto error_out; 1568 } 1569 if (count == sizeof(uint16_t)) { 1570 if (where > LPFC_PCI_CFG_SIZE - sizeof(uint16_t)) 1571 goto error_out; 1572 if (where % sizeof(uint16_t)) 1573 goto error_out; 1574 } 1575 if (count == sizeof(uint32_t)) { 1576 if (where > LPFC_PCI_CFG_SIZE - sizeof(uint32_t)) 1577 goto error_out; 1578 if (where % sizeof(uint32_t)) 1579 goto error_out; 1580 } 1581 } else if (idiag.cmd.opcode == LPFC_IDIAG_CMD_PCICFG_WR || 1582 idiag.cmd.opcode == LPFC_IDIAG_CMD_PCICFG_ST || 1583 idiag.cmd.opcode == LPFC_IDIAG_CMD_PCICFG_CL) { 1584 /* Sanity check on PCI config write command line arguments */ 1585 if (rc != LPFC_PCI_CFG_WR_CMD_ARG) 1586 goto error_out; 1587 /* Write command to PCI config space, read-modify-write */ 1588 where = idiag.cmd.data[IDIAG_PCICFG_WHERE_INDX]; 1589 count = idiag.cmd.data[IDIAG_PCICFG_COUNT_INDX]; 1590 value = idiag.cmd.data[IDIAG_PCICFG_VALUE_INDX]; 1591 /* Sanity checks */ 1592 if ((count != sizeof(uint8_t)) && 1593 (count != sizeof(uint16_t)) && 1594 (count != sizeof(uint32_t))) 1595 goto error_out; 1596 if (count == sizeof(uint8_t)) { 1597 if (where > LPFC_PCI_CFG_SIZE - sizeof(uint8_t)) 1598 goto error_out; 1599 if (where % sizeof(uint8_t)) 1600 goto error_out; 1601 if (idiag.cmd.opcode == LPFC_IDIAG_CMD_PCICFG_WR) 1602 pci_write_config_byte(pdev, where, 1603 (uint8_t)value); 1604 if (idiag.cmd.opcode == LPFC_IDIAG_CMD_PCICFG_ST) { 1605 rc = pci_read_config_byte(pdev, where, &u8val); 1606 if (!rc) { 1607 u8val |= (uint8_t)value; 1608 pci_write_config_byte(pdev, where, 1609 u8val); 1610 } 1611 } 1612 if (idiag.cmd.opcode == LPFC_IDIAG_CMD_PCICFG_CL) { 1613 rc = pci_read_config_byte(pdev, where, &u8val); 1614 if (!rc) { 1615 u8val &= (uint8_t)(~value); 1616 pci_write_config_byte(pdev, where, 1617 u8val); 1618 } 1619 } 1620 } 1621 if (count == sizeof(uint16_t)) { 1622 if (where > LPFC_PCI_CFG_SIZE - sizeof(uint16_t)) 1623 goto error_out; 1624 if (where % sizeof(uint16_t)) 1625 goto error_out; 1626 if (idiag.cmd.opcode == LPFC_IDIAG_CMD_PCICFG_WR) 1627 pci_write_config_word(pdev, where, 1628 (uint16_t)value); 1629 if (idiag.cmd.opcode == LPFC_IDIAG_CMD_PCICFG_ST) { 1630 rc = pci_read_config_word(pdev, where, &u16val); 1631 if (!rc) { 1632 u16val |= (uint16_t)value; 1633 pci_write_config_word(pdev, where, 1634 u16val); 1635 } 1636 } 1637 if (idiag.cmd.opcode == LPFC_IDIAG_CMD_PCICFG_CL) { 1638 rc = pci_read_config_word(pdev, where, &u16val); 1639 if (!rc) { 1640 u16val &= (uint16_t)(~value); 1641 pci_write_config_word(pdev, where, 1642 u16val); 1643 } 1644 } 1645 } 1646 if (count == sizeof(uint32_t)) { 1647 if (where > LPFC_PCI_CFG_SIZE - sizeof(uint32_t)) 1648 goto error_out; 1649 if (where % sizeof(uint32_t)) 1650 goto error_out; 1651 if (idiag.cmd.opcode == LPFC_IDIAG_CMD_PCICFG_WR) 1652 pci_write_config_dword(pdev, where, value); 1653 if (idiag.cmd.opcode == LPFC_IDIAG_CMD_PCICFG_ST) { 1654 rc = pci_read_config_dword(pdev, where, 1655 &u32val); 1656 if (!rc) { 1657 u32val |= value; 1658 pci_write_config_dword(pdev, where, 1659 u32val); 1660 } 1661 } 1662 if (idiag.cmd.opcode == LPFC_IDIAG_CMD_PCICFG_CL) { 1663 rc = pci_read_config_dword(pdev, where, 1664 &u32val); 1665 if (!rc) { 1666 u32val &= ~value; 1667 pci_write_config_dword(pdev, where, 1668 u32val); 1669 } 1670 } 1671 } 1672 } else 1673 /* All other opecodes are illegal for now */ 1674 goto error_out; 1675 1676 return nbytes; 1677 error_out: 1678 memset(&idiag, 0, sizeof(idiag)); 1679 return -EINVAL; 1680 } 1681 1682 /** 1683 * lpfc_idiag_baracc_read - idiag debugfs pci bar access read 1684 * @file: The file pointer to read from. 1685 * @buf: The buffer to copy the data to. 1686 * @nbytes: The number of bytes to read. 1687 * @ppos: The position in the file to start reading from. 1688 * 1689 * Description: 1690 * This routine reads data from the @phba pci bar memory mapped space 1691 * according to the idiag command, and copies to user @buf. 1692 * 1693 * Returns: 1694 * This function returns the amount of data that was read (this could be less 1695 * than @nbytes if the end of the file was reached) or a negative error value. 1696 **/ 1697 static ssize_t 1698 lpfc_idiag_baracc_read(struct file *file, char __user *buf, size_t nbytes, 1699 loff_t *ppos) 1700 { 1701 struct lpfc_debug *debug = file->private_data; 1702 struct lpfc_hba *phba = (struct lpfc_hba *)debug->i_private; 1703 int offset_label, offset, offset_run, len = 0, index; 1704 int bar_num, acc_range, bar_size; 1705 char *pbuffer; 1706 void __iomem *mem_mapped_bar; 1707 uint32_t if_type; 1708 struct pci_dev *pdev; 1709 uint32_t u32val; 1710 1711 pdev = phba->pcidev; 1712 if (!pdev) 1713 return 0; 1714 1715 /* This is a user read operation */ 1716 debug->op = LPFC_IDIAG_OP_RD; 1717 1718 if (!debug->buffer) 1719 debug->buffer = kmalloc(LPFC_PCI_BAR_RD_BUF_SIZE, GFP_KERNEL); 1720 if (!debug->buffer) 1721 return 0; 1722 pbuffer = debug->buffer; 1723 1724 if (*ppos) 1725 return 0; 1726 1727 if (idiag.cmd.opcode == LPFC_IDIAG_CMD_BARACC_RD) { 1728 bar_num = idiag.cmd.data[IDIAG_BARACC_BAR_NUM_INDX]; 1729 offset = idiag.cmd.data[IDIAG_BARACC_OFF_SET_INDX]; 1730 acc_range = idiag.cmd.data[IDIAG_BARACC_ACC_MOD_INDX]; 1731 bar_size = idiag.cmd.data[IDIAG_BARACC_BAR_SZE_INDX]; 1732 } else 1733 return 0; 1734 1735 if (acc_range == 0) 1736 return 0; 1737 1738 if_type = bf_get(lpfc_sli_intf_if_type, &phba->sli4_hba.sli_intf); 1739 if (if_type == LPFC_SLI_INTF_IF_TYPE_0) { 1740 if (bar_num == IDIAG_BARACC_BAR_0) 1741 mem_mapped_bar = phba->sli4_hba.conf_regs_memmap_p; 1742 else if (bar_num == IDIAG_BARACC_BAR_1) 1743 mem_mapped_bar = phba->sli4_hba.ctrl_regs_memmap_p; 1744 else if (bar_num == IDIAG_BARACC_BAR_2) 1745 mem_mapped_bar = phba->sli4_hba.drbl_regs_memmap_p; 1746 else 1747 return 0; 1748 } else if (if_type == LPFC_SLI_INTF_IF_TYPE_2) { 1749 if (bar_num == IDIAG_BARACC_BAR_0) 1750 mem_mapped_bar = phba->sli4_hba.conf_regs_memmap_p; 1751 else 1752 return 0; 1753 } else 1754 return 0; 1755 1756 /* Read single PCI bar space register */ 1757 if (acc_range == SINGLE_WORD) { 1758 offset_run = offset; 1759 u32val = readl(mem_mapped_bar + offset_run); 1760 len += snprintf(pbuffer+len, LPFC_PCI_BAR_RD_BUF_SIZE-len, 1761 "%05x: %08x\n", offset_run, u32val); 1762 } else 1763 goto baracc_browse; 1764 1765 return simple_read_from_buffer(buf, nbytes, ppos, pbuffer, len); 1766 1767 baracc_browse: 1768 1769 /* Browse all PCI bar space registers */ 1770 offset_label = idiag.offset.last_rd; 1771 offset_run = offset_label; 1772 1773 /* Read PCI bar memory mapped space */ 1774 len += snprintf(pbuffer+len, LPFC_PCI_BAR_RD_BUF_SIZE-len, 1775 "%05x: ", offset_label); 1776 index = LPFC_PCI_BAR_RD_SIZE; 1777 while (index > 0) { 1778 u32val = readl(mem_mapped_bar + offset_run); 1779 len += snprintf(pbuffer+len, LPFC_PCI_BAR_RD_BUF_SIZE-len, 1780 "%08x ", u32val); 1781 offset_run += sizeof(uint32_t); 1782 if (acc_range == LPFC_PCI_BAR_BROWSE) { 1783 if (offset_run >= bar_size) { 1784 len += snprintf(pbuffer+len, 1785 LPFC_PCI_BAR_RD_BUF_SIZE-len, "\n"); 1786 break; 1787 } 1788 } else { 1789 if (offset_run >= offset + 1790 (acc_range * sizeof(uint32_t))) { 1791 len += snprintf(pbuffer+len, 1792 LPFC_PCI_BAR_RD_BUF_SIZE-len, "\n"); 1793 break; 1794 } 1795 } 1796 index -= sizeof(uint32_t); 1797 if (!index) 1798 len += snprintf(pbuffer+len, 1799 LPFC_PCI_BAR_RD_BUF_SIZE-len, "\n"); 1800 else if (!(index % (8 * sizeof(uint32_t)))) { 1801 offset_label += (8 * sizeof(uint32_t)); 1802 len += snprintf(pbuffer+len, 1803 LPFC_PCI_BAR_RD_BUF_SIZE-len, 1804 "\n%05x: ", offset_label); 1805 } 1806 } 1807 1808 /* Set up the offset for next portion of pci bar read */ 1809 if (index == 0) { 1810 idiag.offset.last_rd += LPFC_PCI_BAR_RD_SIZE; 1811 if (acc_range == LPFC_PCI_BAR_BROWSE) { 1812 if (idiag.offset.last_rd >= bar_size) 1813 idiag.offset.last_rd = 0; 1814 } else { 1815 if (offset_run >= offset + 1816 (acc_range * sizeof(uint32_t))) 1817 idiag.offset.last_rd = offset; 1818 } 1819 } else { 1820 if (acc_range == LPFC_PCI_BAR_BROWSE) 1821 idiag.offset.last_rd = 0; 1822 else 1823 idiag.offset.last_rd = offset; 1824 } 1825 1826 return simple_read_from_buffer(buf, nbytes, ppos, pbuffer, len); 1827 } 1828 1829 /** 1830 * lpfc_idiag_baracc_write - Syntax check and set up idiag bar access commands 1831 * @file: The file pointer to read from. 1832 * @buf: The buffer to copy the user data from. 1833 * @nbytes: The number of bytes to get. 1834 * @ppos: The position in the file to start reading from. 1835 * 1836 * This routine get the debugfs idiag command struct from user space and 1837 * then perform the syntax check for PCI bar memory mapped space read or 1838 * write command accordingly. In the case of PCI bar memory mapped space 1839 * read command, it sets up the command in the idiag command struct for 1840 * the debugfs read operation. In the case of PCI bar memorpy mapped space 1841 * write operation, it executes the write operation into the PCI bar memory 1842 * mapped space accordingly. 1843 * 1844 * It returns the @nbytges passing in from debugfs user space when successful. 1845 * In case of error conditions, it returns proper error code back to the user 1846 * space. 1847 */ 1848 static ssize_t 1849 lpfc_idiag_baracc_write(struct file *file, const char __user *buf, 1850 size_t nbytes, loff_t *ppos) 1851 { 1852 struct lpfc_debug *debug = file->private_data; 1853 struct lpfc_hba *phba = (struct lpfc_hba *)debug->i_private; 1854 uint32_t bar_num, bar_size, offset, value, acc_range; 1855 struct pci_dev *pdev; 1856 void __iomem *mem_mapped_bar; 1857 uint32_t if_type; 1858 uint32_t u32val; 1859 int rc; 1860 1861 pdev = phba->pcidev; 1862 if (!pdev) 1863 return -EFAULT; 1864 1865 /* This is a user write operation */ 1866 debug->op = LPFC_IDIAG_OP_WR; 1867 1868 rc = lpfc_idiag_cmd_get(buf, nbytes, &idiag.cmd); 1869 if (rc < 0) 1870 return rc; 1871 1872 if_type = bf_get(lpfc_sli_intf_if_type, &phba->sli4_hba.sli_intf); 1873 bar_num = idiag.cmd.data[IDIAG_BARACC_BAR_NUM_INDX]; 1874 1875 if (if_type == LPFC_SLI_INTF_IF_TYPE_0) { 1876 if ((bar_num != IDIAG_BARACC_BAR_0) && 1877 (bar_num != IDIAG_BARACC_BAR_1) && 1878 (bar_num != IDIAG_BARACC_BAR_2)) 1879 goto error_out; 1880 } else if (if_type == LPFC_SLI_INTF_IF_TYPE_2) { 1881 if (bar_num != IDIAG_BARACC_BAR_0) 1882 goto error_out; 1883 } else 1884 goto error_out; 1885 1886 if (if_type == LPFC_SLI_INTF_IF_TYPE_0) { 1887 if (bar_num == IDIAG_BARACC_BAR_0) { 1888 idiag.cmd.data[IDIAG_BARACC_BAR_SZE_INDX] = 1889 LPFC_PCI_IF0_BAR0_SIZE; 1890 mem_mapped_bar = phba->sli4_hba.conf_regs_memmap_p; 1891 } else if (bar_num == IDIAG_BARACC_BAR_1) { 1892 idiag.cmd.data[IDIAG_BARACC_BAR_SZE_INDX] = 1893 LPFC_PCI_IF0_BAR1_SIZE; 1894 mem_mapped_bar = phba->sli4_hba.ctrl_regs_memmap_p; 1895 } else if (bar_num == IDIAG_BARACC_BAR_2) { 1896 idiag.cmd.data[IDIAG_BARACC_BAR_SZE_INDX] = 1897 LPFC_PCI_IF0_BAR2_SIZE; 1898 mem_mapped_bar = phba->sli4_hba.drbl_regs_memmap_p; 1899 } else 1900 goto error_out; 1901 } else if (if_type == LPFC_SLI_INTF_IF_TYPE_2) { 1902 if (bar_num == IDIAG_BARACC_BAR_0) { 1903 idiag.cmd.data[IDIAG_BARACC_BAR_SZE_INDX] = 1904 LPFC_PCI_IF2_BAR0_SIZE; 1905 mem_mapped_bar = phba->sli4_hba.conf_regs_memmap_p; 1906 } else 1907 goto error_out; 1908 } else 1909 goto error_out; 1910 1911 offset = idiag.cmd.data[IDIAG_BARACC_OFF_SET_INDX]; 1912 if (offset % sizeof(uint32_t)) 1913 goto error_out; 1914 1915 bar_size = idiag.cmd.data[IDIAG_BARACC_BAR_SZE_INDX]; 1916 if (idiag.cmd.opcode == LPFC_IDIAG_CMD_BARACC_RD) { 1917 /* Sanity check on PCI config read command line arguments */ 1918 if (rc != LPFC_PCI_BAR_RD_CMD_ARG) 1919 goto error_out; 1920 acc_range = idiag.cmd.data[IDIAG_BARACC_ACC_MOD_INDX]; 1921 if (acc_range == LPFC_PCI_BAR_BROWSE) { 1922 if (offset > bar_size - sizeof(uint32_t)) 1923 goto error_out; 1924 /* Starting offset to browse */ 1925 idiag.offset.last_rd = offset; 1926 } else if (acc_range > SINGLE_WORD) { 1927 if (offset + acc_range * sizeof(uint32_t) > bar_size) 1928 goto error_out; 1929 /* Starting offset to browse */ 1930 idiag.offset.last_rd = offset; 1931 } else if (acc_range != SINGLE_WORD) 1932 goto error_out; 1933 } else if (idiag.cmd.opcode == LPFC_IDIAG_CMD_BARACC_WR || 1934 idiag.cmd.opcode == LPFC_IDIAG_CMD_BARACC_ST || 1935 idiag.cmd.opcode == LPFC_IDIAG_CMD_BARACC_CL) { 1936 /* Sanity check on PCI bar write command line arguments */ 1937 if (rc != LPFC_PCI_BAR_WR_CMD_ARG) 1938 goto error_out; 1939 /* Write command to PCI bar space, read-modify-write */ 1940 acc_range = SINGLE_WORD; 1941 value = idiag.cmd.data[IDIAG_BARACC_REG_VAL_INDX]; 1942 if (idiag.cmd.opcode == LPFC_IDIAG_CMD_BARACC_WR) { 1943 writel(value, mem_mapped_bar + offset); 1944 readl(mem_mapped_bar + offset); 1945 } 1946 if (idiag.cmd.opcode == LPFC_IDIAG_CMD_BARACC_ST) { 1947 u32val = readl(mem_mapped_bar + offset); 1948 u32val |= value; 1949 writel(u32val, mem_mapped_bar + offset); 1950 readl(mem_mapped_bar + offset); 1951 } 1952 if (idiag.cmd.opcode == LPFC_IDIAG_CMD_BARACC_CL) { 1953 u32val = readl(mem_mapped_bar + offset); 1954 u32val &= ~value; 1955 writel(u32val, mem_mapped_bar + offset); 1956 readl(mem_mapped_bar + offset); 1957 } 1958 } else 1959 /* All other opecodes are illegal for now */ 1960 goto error_out; 1961 1962 return nbytes; 1963 error_out: 1964 memset(&idiag, 0, sizeof(idiag)); 1965 return -EINVAL; 1966 } 1967 1968 /** 1969 * lpfc_idiag_queinfo_read - idiag debugfs read queue information 1970 * @file: The file pointer to read from. 1971 * @buf: The buffer to copy the data to. 1972 * @nbytes: The number of bytes to read. 1973 * @ppos: The position in the file to start reading from. 1974 * 1975 * Description: 1976 * This routine reads data from the @phba SLI4 PCI function queue information, 1977 * and copies to user @buf. 1978 * 1979 * Returns: 1980 * This function returns the amount of data that was read (this could be less 1981 * than @nbytes if the end of the file was reached) or a negative error value. 1982 **/ 1983 static ssize_t 1984 lpfc_idiag_queinfo_read(struct file *file, char __user *buf, size_t nbytes, 1985 loff_t *ppos) 1986 { 1987 struct lpfc_debug *debug = file->private_data; 1988 struct lpfc_hba *phba = (struct lpfc_hba *)debug->i_private; 1989 int len = 0, fcp_qidx; 1990 char *pbuffer; 1991 1992 if (!debug->buffer) 1993 debug->buffer = kmalloc(LPFC_QUE_INFO_GET_BUF_SIZE, GFP_KERNEL); 1994 if (!debug->buffer) 1995 return 0; 1996 pbuffer = debug->buffer; 1997 1998 if (*ppos) 1999 return 0; 2000 2001 /* Get slow-path event queue information */ 2002 len += snprintf(pbuffer+len, LPFC_QUE_INFO_GET_BUF_SIZE-len, 2003 "Slow-path EQ information:\n"); 2004 if (phba->sli4_hba.sp_eq) { 2005 len += snprintf(pbuffer+len, LPFC_QUE_INFO_GET_BUF_SIZE-len, 2006 "\tEQID[%02d], " 2007 "QE-COUNT[%04d], QE-SIZE[%04d], " 2008 "HOST-INDEX[%04d], PORT-INDEX[%04d]\n\n", 2009 phba->sli4_hba.sp_eq->queue_id, 2010 phba->sli4_hba.sp_eq->entry_count, 2011 phba->sli4_hba.sp_eq->entry_size, 2012 phba->sli4_hba.sp_eq->host_index, 2013 phba->sli4_hba.sp_eq->hba_index); 2014 } 2015 2016 /* Get fast-path event queue information */ 2017 len += snprintf(pbuffer+len, LPFC_QUE_INFO_GET_BUF_SIZE-len, 2018 "Fast-path EQ information:\n"); 2019 if (phba->sli4_hba.fp_eq) { 2020 for (fcp_qidx = 0; fcp_qidx < phba->cfg_fcp_eq_count; 2021 fcp_qidx++) { 2022 if (phba->sli4_hba.fp_eq[fcp_qidx]) { 2023 len += snprintf(pbuffer+len, 2024 LPFC_QUE_INFO_GET_BUF_SIZE-len, 2025 "\tEQID[%02d], " 2026 "QE-COUNT[%04d], QE-SIZE[%04d], " 2027 "HOST-INDEX[%04d], PORT-INDEX[%04d]\n", 2028 phba->sli4_hba.fp_eq[fcp_qidx]->queue_id, 2029 phba->sli4_hba.fp_eq[fcp_qidx]->entry_count, 2030 phba->sli4_hba.fp_eq[fcp_qidx]->entry_size, 2031 phba->sli4_hba.fp_eq[fcp_qidx]->host_index, 2032 phba->sli4_hba.fp_eq[fcp_qidx]->hba_index); 2033 } 2034 } 2035 } 2036 len += snprintf(pbuffer+len, LPFC_QUE_INFO_GET_BUF_SIZE-len, "\n"); 2037 2038 /* Get mailbox complete queue information */ 2039 len += snprintf(pbuffer+len, LPFC_QUE_INFO_GET_BUF_SIZE-len, 2040 "Slow-path MBX CQ information:\n"); 2041 if (phba->sli4_hba.mbx_cq) { 2042 len += snprintf(pbuffer+len, LPFC_QUE_INFO_GET_BUF_SIZE-len, 2043 "Associated EQID[%02d]:\n", 2044 phba->sli4_hba.mbx_cq->assoc_qid); 2045 len += snprintf(pbuffer+len, LPFC_QUE_INFO_GET_BUF_SIZE-len, 2046 "\tCQID[%02d], " 2047 "QE-COUNT[%04d], QE-SIZE[%04d], " 2048 "HOST-INDEX[%04d], PORT-INDEX[%04d]\n\n", 2049 phba->sli4_hba.mbx_cq->queue_id, 2050 phba->sli4_hba.mbx_cq->entry_count, 2051 phba->sli4_hba.mbx_cq->entry_size, 2052 phba->sli4_hba.mbx_cq->host_index, 2053 phba->sli4_hba.mbx_cq->hba_index); 2054 } 2055 2056 /* Get slow-path complete queue information */ 2057 len += snprintf(pbuffer+len, LPFC_QUE_INFO_GET_BUF_SIZE-len, 2058 "Slow-path ELS CQ information:\n"); 2059 if (phba->sli4_hba.els_cq) { 2060 len += snprintf(pbuffer+len, LPFC_QUE_INFO_GET_BUF_SIZE-len, 2061 "Associated EQID[%02d]:\n", 2062 phba->sli4_hba.els_cq->assoc_qid); 2063 len += snprintf(pbuffer+len, LPFC_QUE_INFO_GET_BUF_SIZE-len, 2064 "\tCQID [%02d], " 2065 "QE-COUNT[%04d], QE-SIZE[%04d], " 2066 "HOST-INDEX[%04d], PORT-INDEX[%04d]\n\n", 2067 phba->sli4_hba.els_cq->queue_id, 2068 phba->sli4_hba.els_cq->entry_count, 2069 phba->sli4_hba.els_cq->entry_size, 2070 phba->sli4_hba.els_cq->host_index, 2071 phba->sli4_hba.els_cq->hba_index); 2072 } 2073 2074 /* Get fast-path complete queue information */ 2075 len += snprintf(pbuffer+len, LPFC_QUE_INFO_GET_BUF_SIZE-len, 2076 "Fast-path FCP CQ information:\n"); 2077 fcp_qidx = 0; 2078 if (phba->sli4_hba.fcp_cq) { 2079 do { 2080 if (phba->sli4_hba.fcp_cq[fcp_qidx]) { 2081 len += snprintf(pbuffer+len, 2082 LPFC_QUE_INFO_GET_BUF_SIZE-len, 2083 "Associated EQID[%02d]:\n", 2084 phba->sli4_hba.fcp_cq[fcp_qidx]->assoc_qid); 2085 len += snprintf(pbuffer+len, 2086 LPFC_QUE_INFO_GET_BUF_SIZE-len, 2087 "\tCQID[%02d], " 2088 "QE-COUNT[%04d], QE-SIZE[%04d], " 2089 "HOST-INDEX[%04d], PORT-INDEX[%04d]\n", 2090 phba->sli4_hba.fcp_cq[fcp_qidx]->queue_id, 2091 phba->sli4_hba.fcp_cq[fcp_qidx]->entry_count, 2092 phba->sli4_hba.fcp_cq[fcp_qidx]->entry_size, 2093 phba->sli4_hba.fcp_cq[fcp_qidx]->host_index, 2094 phba->sli4_hba.fcp_cq[fcp_qidx]->hba_index); 2095 } 2096 } while (++fcp_qidx < phba->cfg_fcp_eq_count); 2097 len += snprintf(pbuffer+len, 2098 LPFC_QUE_INFO_GET_BUF_SIZE-len, "\n"); 2099 } 2100 2101 /* Get mailbox queue information */ 2102 len += snprintf(pbuffer+len, LPFC_QUE_INFO_GET_BUF_SIZE-len, 2103 "Slow-path MBX MQ information:\n"); 2104 if (phba->sli4_hba.mbx_wq) { 2105 len += snprintf(pbuffer+len, LPFC_QUE_INFO_GET_BUF_SIZE-len, 2106 "Associated CQID[%02d]:\n", 2107 phba->sli4_hba.mbx_wq->assoc_qid); 2108 len += snprintf(pbuffer+len, LPFC_QUE_INFO_GET_BUF_SIZE-len, 2109 "\tWQID[%02d], " 2110 "QE-COUNT[%04d], QE-SIZE[%04d], " 2111 "HOST-INDEX[%04d], PORT-INDEX[%04d]\n\n", 2112 phba->sli4_hba.mbx_wq->queue_id, 2113 phba->sli4_hba.mbx_wq->entry_count, 2114 phba->sli4_hba.mbx_wq->entry_size, 2115 phba->sli4_hba.mbx_wq->host_index, 2116 phba->sli4_hba.mbx_wq->hba_index); 2117 } 2118 2119 /* Get slow-path work queue information */ 2120 len += snprintf(pbuffer+len, LPFC_QUE_INFO_GET_BUF_SIZE-len, 2121 "Slow-path ELS WQ information:\n"); 2122 if (phba->sli4_hba.els_wq) { 2123 len += snprintf(pbuffer+len, LPFC_QUE_INFO_GET_BUF_SIZE-len, 2124 "Associated CQID[%02d]:\n", 2125 phba->sli4_hba.els_wq->assoc_qid); 2126 len += snprintf(pbuffer+len, LPFC_QUE_INFO_GET_BUF_SIZE-len, 2127 "\tWQID[%02d], " 2128 "QE-COUNT[%04d], QE-SIZE[%04d], " 2129 "HOST-INDEX[%04d], PORT-INDEX[%04d]\n\n", 2130 phba->sli4_hba.els_wq->queue_id, 2131 phba->sli4_hba.els_wq->entry_count, 2132 phba->sli4_hba.els_wq->entry_size, 2133 phba->sli4_hba.els_wq->host_index, 2134 phba->sli4_hba.els_wq->hba_index); 2135 } 2136 2137 /* Get fast-path work queue information */ 2138 len += snprintf(pbuffer+len, LPFC_QUE_INFO_GET_BUF_SIZE-len, 2139 "Fast-path FCP WQ information:\n"); 2140 if (phba->sli4_hba.fcp_wq) { 2141 for (fcp_qidx = 0; fcp_qidx < phba->cfg_fcp_wq_count; 2142 fcp_qidx++) { 2143 if (!phba->sli4_hba.fcp_wq[fcp_qidx]) 2144 continue; 2145 len += snprintf(pbuffer+len, 2146 LPFC_QUE_INFO_GET_BUF_SIZE-len, 2147 "Associated CQID[%02d]:\n", 2148 phba->sli4_hba.fcp_wq[fcp_qidx]->assoc_qid); 2149 len += snprintf(pbuffer+len, 2150 LPFC_QUE_INFO_GET_BUF_SIZE-len, 2151 "\tWQID[%02d], " 2152 "QE-COUNT[%04d], WQE-SIZE[%04d], " 2153 "HOST-INDEX[%04d], PORT-INDEX[%04d]\n", 2154 phba->sli4_hba.fcp_wq[fcp_qidx]->queue_id, 2155 phba->sli4_hba.fcp_wq[fcp_qidx]->entry_count, 2156 phba->sli4_hba.fcp_wq[fcp_qidx]->entry_size, 2157 phba->sli4_hba.fcp_wq[fcp_qidx]->host_index, 2158 phba->sli4_hba.fcp_wq[fcp_qidx]->hba_index); 2159 } 2160 len += snprintf(pbuffer+len, 2161 LPFC_QUE_INFO_GET_BUF_SIZE-len, "\n"); 2162 } 2163 2164 /* Get receive queue information */ 2165 len += snprintf(pbuffer+len, LPFC_QUE_INFO_GET_BUF_SIZE-len, 2166 "Slow-path RQ information:\n"); 2167 if (phba->sli4_hba.hdr_rq && phba->sli4_hba.dat_rq) { 2168 len += snprintf(pbuffer+len, LPFC_QUE_INFO_GET_BUF_SIZE-len, 2169 "Associated CQID[%02d]:\n", 2170 phba->sli4_hba.hdr_rq->assoc_qid); 2171 len += snprintf(pbuffer+len, LPFC_QUE_INFO_GET_BUF_SIZE-len, 2172 "\tHQID[%02d], " 2173 "QE-COUNT[%04d], QE-SIZE[%04d], " 2174 "HOST-INDEX[%04d], PORT-INDEX[%04d]\n", 2175 phba->sli4_hba.hdr_rq->queue_id, 2176 phba->sli4_hba.hdr_rq->entry_count, 2177 phba->sli4_hba.hdr_rq->entry_size, 2178 phba->sli4_hba.hdr_rq->host_index, 2179 phba->sli4_hba.hdr_rq->hba_index); 2180 len += snprintf(pbuffer+len, LPFC_QUE_INFO_GET_BUF_SIZE-len, 2181 "\tDQID[%02d], " 2182 "QE-COUNT[%04d], QE-SIZE[%04d], " 2183 "HOST-INDEX[%04d], PORT-INDEX[%04d]\n", 2184 phba->sli4_hba.dat_rq->queue_id, 2185 phba->sli4_hba.dat_rq->entry_count, 2186 phba->sli4_hba.dat_rq->entry_size, 2187 phba->sli4_hba.dat_rq->host_index, 2188 phba->sli4_hba.dat_rq->hba_index); 2189 } 2190 return simple_read_from_buffer(buf, nbytes, ppos, pbuffer, len); 2191 } 2192 2193 /** 2194 * lpfc_idiag_que_param_check - queue access command parameter sanity check 2195 * @q: The pointer to queue structure. 2196 * @index: The index into a queue entry. 2197 * @count: The number of queue entries to access. 2198 * 2199 * Description: 2200 * The routine performs sanity check on device queue access method commands. 2201 * 2202 * Returns: 2203 * This function returns -EINVAL when fails the sanity check, otherwise, it 2204 * returns 0. 2205 **/ 2206 static int 2207 lpfc_idiag_que_param_check(struct lpfc_queue *q, int index, int count) 2208 { 2209 /* Only support single entry read or browsing */ 2210 if ((count != 1) && (count != LPFC_QUE_ACC_BROWSE)) 2211 return -EINVAL; 2212 if (index > q->entry_count - 1) 2213 return -EINVAL; 2214 return 0; 2215 } 2216 2217 /** 2218 * lpfc_idiag_queacc_read_qe - read a single entry from the given queue index 2219 * @pbuffer: The pointer to buffer to copy the read data into. 2220 * @pque: The pointer to the queue to be read. 2221 * @index: The index into the queue entry. 2222 * 2223 * Description: 2224 * This routine reads out a single entry from the given queue's index location 2225 * and copies it into the buffer provided. 2226 * 2227 * Returns: 2228 * This function returns 0 when it fails, otherwise, it returns the length of 2229 * the data read into the buffer provided. 2230 **/ 2231 static int 2232 lpfc_idiag_queacc_read_qe(char *pbuffer, int len, struct lpfc_queue *pque, 2233 uint32_t index) 2234 { 2235 int offset, esize; 2236 uint32_t *pentry; 2237 2238 if (!pbuffer || !pque) 2239 return 0; 2240 2241 esize = pque->entry_size; 2242 len += snprintf(pbuffer+len, LPFC_QUE_ACC_BUF_SIZE-len, 2243 "QE-INDEX[%04d]:\n", index); 2244 2245 offset = 0; 2246 pentry = pque->qe[index].address; 2247 while (esize > 0) { 2248 len += snprintf(pbuffer+len, LPFC_QUE_ACC_BUF_SIZE-len, 2249 "%08x ", *pentry); 2250 pentry++; 2251 offset += sizeof(uint32_t); 2252 esize -= sizeof(uint32_t); 2253 if (esize > 0 && !(offset % (4 * sizeof(uint32_t)))) 2254 len += snprintf(pbuffer+len, 2255 LPFC_QUE_ACC_BUF_SIZE-len, "\n"); 2256 } 2257 len += snprintf(pbuffer+len, LPFC_QUE_ACC_BUF_SIZE-len, "\n"); 2258 2259 return len; 2260 } 2261 2262 /** 2263 * lpfc_idiag_queacc_read - idiag debugfs read port queue 2264 * @file: The file pointer to read from. 2265 * @buf: The buffer to copy the data to. 2266 * @nbytes: The number of bytes to read. 2267 * @ppos: The position in the file to start reading from. 2268 * 2269 * Description: 2270 * This routine reads data from the @phba device queue memory according to the 2271 * idiag command, and copies to user @buf. Depending on the queue dump read 2272 * command setup, it does either a single queue entry read or browing through 2273 * all entries of the queue. 2274 * 2275 * Returns: 2276 * This function returns the amount of data that was read (this could be less 2277 * than @nbytes if the end of the file was reached) or a negative error value. 2278 **/ 2279 static ssize_t 2280 lpfc_idiag_queacc_read(struct file *file, char __user *buf, size_t nbytes, 2281 loff_t *ppos) 2282 { 2283 struct lpfc_debug *debug = file->private_data; 2284 uint32_t last_index, index, count; 2285 struct lpfc_queue *pque = NULL; 2286 char *pbuffer; 2287 int len = 0; 2288 2289 /* This is a user read operation */ 2290 debug->op = LPFC_IDIAG_OP_RD; 2291 2292 if (!debug->buffer) 2293 debug->buffer = kmalloc(LPFC_QUE_ACC_BUF_SIZE, GFP_KERNEL); 2294 if (!debug->buffer) 2295 return 0; 2296 pbuffer = debug->buffer; 2297 2298 if (*ppos) 2299 return 0; 2300 2301 if (idiag.cmd.opcode == LPFC_IDIAG_CMD_QUEACC_RD) { 2302 index = idiag.cmd.data[IDIAG_QUEACC_INDEX_INDX]; 2303 count = idiag.cmd.data[IDIAG_QUEACC_COUNT_INDX]; 2304 pque = (struct lpfc_queue *)idiag.ptr_private; 2305 } else 2306 return 0; 2307 2308 /* Browse the queue starting from index */ 2309 if (count == LPFC_QUE_ACC_BROWSE) 2310 goto que_browse; 2311 2312 /* Read a single entry from the queue */ 2313 len = lpfc_idiag_queacc_read_qe(pbuffer, len, pque, index); 2314 2315 return simple_read_from_buffer(buf, nbytes, ppos, pbuffer, len); 2316 2317 que_browse: 2318 2319 /* Browse all entries from the queue */ 2320 last_index = idiag.offset.last_rd; 2321 index = last_index; 2322 2323 while (len < LPFC_QUE_ACC_SIZE - pque->entry_size) { 2324 len = lpfc_idiag_queacc_read_qe(pbuffer, len, pque, index); 2325 index++; 2326 if (index > pque->entry_count - 1) 2327 break; 2328 } 2329 2330 /* Set up the offset for next portion of pci cfg read */ 2331 if (index > pque->entry_count - 1) 2332 index = 0; 2333 idiag.offset.last_rd = index; 2334 2335 return simple_read_from_buffer(buf, nbytes, ppos, pbuffer, len); 2336 } 2337 2338 /** 2339 * lpfc_idiag_queacc_write - Syntax check and set up idiag queacc commands 2340 * @file: The file pointer to read from. 2341 * @buf: The buffer to copy the user data from. 2342 * @nbytes: The number of bytes to get. 2343 * @ppos: The position in the file to start reading from. 2344 * 2345 * This routine get the debugfs idiag command struct from user space and then 2346 * perform the syntax check for port queue read (dump) or write (set) command 2347 * accordingly. In the case of port queue read command, it sets up the command 2348 * in the idiag command struct for the following debugfs read operation. In 2349 * the case of port queue write operation, it executes the write operation 2350 * into the port queue entry accordingly. 2351 * 2352 * It returns the @nbytges passing in from debugfs user space when successful. 2353 * In case of error conditions, it returns proper error code back to the user 2354 * space. 2355 **/ 2356 static ssize_t 2357 lpfc_idiag_queacc_write(struct file *file, const char __user *buf, 2358 size_t nbytes, loff_t *ppos) 2359 { 2360 struct lpfc_debug *debug = file->private_data; 2361 struct lpfc_hba *phba = (struct lpfc_hba *)debug->i_private; 2362 uint32_t qidx, quetp, queid, index, count, offset, value; 2363 uint32_t *pentry; 2364 struct lpfc_queue *pque; 2365 int rc; 2366 2367 /* This is a user write operation */ 2368 debug->op = LPFC_IDIAG_OP_WR; 2369 2370 rc = lpfc_idiag_cmd_get(buf, nbytes, &idiag.cmd); 2371 if (rc < 0) 2372 return rc; 2373 2374 /* Get and sanity check on command feilds */ 2375 quetp = idiag.cmd.data[IDIAG_QUEACC_QUETP_INDX]; 2376 queid = idiag.cmd.data[IDIAG_QUEACC_QUEID_INDX]; 2377 index = idiag.cmd.data[IDIAG_QUEACC_INDEX_INDX]; 2378 count = idiag.cmd.data[IDIAG_QUEACC_COUNT_INDX]; 2379 offset = idiag.cmd.data[IDIAG_QUEACC_OFFST_INDX]; 2380 value = idiag.cmd.data[IDIAG_QUEACC_VALUE_INDX]; 2381 2382 /* Sanity check on command line arguments */ 2383 if (idiag.cmd.opcode == LPFC_IDIAG_CMD_QUEACC_WR || 2384 idiag.cmd.opcode == LPFC_IDIAG_CMD_QUEACC_ST || 2385 idiag.cmd.opcode == LPFC_IDIAG_CMD_QUEACC_CL) { 2386 if (rc != LPFC_QUE_ACC_WR_CMD_ARG) 2387 goto error_out; 2388 if (count != 1) 2389 goto error_out; 2390 } else if (idiag.cmd.opcode == LPFC_IDIAG_CMD_QUEACC_RD) { 2391 if (rc != LPFC_QUE_ACC_RD_CMD_ARG) 2392 goto error_out; 2393 } else 2394 goto error_out; 2395 2396 switch (quetp) { 2397 case LPFC_IDIAG_EQ: 2398 /* Slow-path event queue */ 2399 if (phba->sli4_hba.sp_eq && 2400 phba->sli4_hba.sp_eq->queue_id == queid) { 2401 /* Sanity check */ 2402 rc = lpfc_idiag_que_param_check( 2403 phba->sli4_hba.sp_eq, index, count); 2404 if (rc) 2405 goto error_out; 2406 idiag.ptr_private = phba->sli4_hba.sp_eq; 2407 goto pass_check; 2408 } 2409 /* Fast-path event queue */ 2410 if (phba->sli4_hba.fp_eq) { 2411 for (qidx = 0; qidx < phba->cfg_fcp_eq_count; qidx++) { 2412 if (phba->sli4_hba.fp_eq[qidx] && 2413 phba->sli4_hba.fp_eq[qidx]->queue_id == 2414 queid) { 2415 /* Sanity check */ 2416 rc = lpfc_idiag_que_param_check( 2417 phba->sli4_hba.fp_eq[qidx], 2418 index, count); 2419 if (rc) 2420 goto error_out; 2421 idiag.ptr_private = 2422 phba->sli4_hba.fp_eq[qidx]; 2423 goto pass_check; 2424 } 2425 } 2426 } 2427 goto error_out; 2428 break; 2429 case LPFC_IDIAG_CQ: 2430 /* MBX complete queue */ 2431 if (phba->sli4_hba.mbx_cq && 2432 phba->sli4_hba.mbx_cq->queue_id == queid) { 2433 /* Sanity check */ 2434 rc = lpfc_idiag_que_param_check( 2435 phba->sli4_hba.mbx_cq, index, count); 2436 if (rc) 2437 goto error_out; 2438 idiag.ptr_private = phba->sli4_hba.mbx_cq; 2439 goto pass_check; 2440 } 2441 /* ELS complete queue */ 2442 if (phba->sli4_hba.els_cq && 2443 phba->sli4_hba.els_cq->queue_id == queid) { 2444 /* Sanity check */ 2445 rc = lpfc_idiag_que_param_check( 2446 phba->sli4_hba.els_cq, index, count); 2447 if (rc) 2448 goto error_out; 2449 idiag.ptr_private = phba->sli4_hba.els_cq; 2450 goto pass_check; 2451 } 2452 /* FCP complete queue */ 2453 if (phba->sli4_hba.fcp_cq) { 2454 qidx = 0; 2455 do { 2456 if (phba->sli4_hba.fcp_cq[qidx] && 2457 phba->sli4_hba.fcp_cq[qidx]->queue_id == 2458 queid) { 2459 /* Sanity check */ 2460 rc = lpfc_idiag_que_param_check( 2461 phba->sli4_hba.fcp_cq[qidx], 2462 index, count); 2463 if (rc) 2464 goto error_out; 2465 idiag.ptr_private = 2466 phba->sli4_hba.fcp_cq[qidx]; 2467 goto pass_check; 2468 } 2469 } while (++qidx < phba->cfg_fcp_eq_count); 2470 } 2471 goto error_out; 2472 break; 2473 case LPFC_IDIAG_MQ: 2474 /* MBX work queue */ 2475 if (phba->sli4_hba.mbx_wq && 2476 phba->sli4_hba.mbx_wq->queue_id == queid) { 2477 /* Sanity check */ 2478 rc = lpfc_idiag_que_param_check( 2479 phba->sli4_hba.mbx_wq, index, count); 2480 if (rc) 2481 goto error_out; 2482 idiag.ptr_private = phba->sli4_hba.mbx_wq; 2483 goto pass_check; 2484 } 2485 goto error_out; 2486 break; 2487 case LPFC_IDIAG_WQ: 2488 /* ELS work queue */ 2489 if (phba->sli4_hba.els_wq && 2490 phba->sli4_hba.els_wq->queue_id == queid) { 2491 /* Sanity check */ 2492 rc = lpfc_idiag_que_param_check( 2493 phba->sli4_hba.els_wq, index, count); 2494 if (rc) 2495 goto error_out; 2496 idiag.ptr_private = phba->sli4_hba.els_wq; 2497 goto pass_check; 2498 } 2499 /* FCP work queue */ 2500 if (phba->sli4_hba.fcp_wq) { 2501 for (qidx = 0; qidx < phba->cfg_fcp_wq_count; qidx++) { 2502 if (!phba->sli4_hba.fcp_wq[qidx]) 2503 continue; 2504 if (phba->sli4_hba.fcp_wq[qidx]->queue_id == 2505 queid) { 2506 /* Sanity check */ 2507 rc = lpfc_idiag_que_param_check( 2508 phba->sli4_hba.fcp_wq[qidx], 2509 index, count); 2510 if (rc) 2511 goto error_out; 2512 idiag.ptr_private = 2513 phba->sli4_hba.fcp_wq[qidx]; 2514 goto pass_check; 2515 } 2516 } 2517 } 2518 goto error_out; 2519 break; 2520 case LPFC_IDIAG_RQ: 2521 /* HDR queue */ 2522 if (phba->sli4_hba.hdr_rq && 2523 phba->sli4_hba.hdr_rq->queue_id == queid) { 2524 /* Sanity check */ 2525 rc = lpfc_idiag_que_param_check( 2526 phba->sli4_hba.hdr_rq, index, count); 2527 if (rc) 2528 goto error_out; 2529 idiag.ptr_private = phba->sli4_hba.hdr_rq; 2530 goto pass_check; 2531 } 2532 /* DAT queue */ 2533 if (phba->sli4_hba.dat_rq && 2534 phba->sli4_hba.dat_rq->queue_id == queid) { 2535 /* Sanity check */ 2536 rc = lpfc_idiag_que_param_check( 2537 phba->sli4_hba.dat_rq, index, count); 2538 if (rc) 2539 goto error_out; 2540 idiag.ptr_private = phba->sli4_hba.dat_rq; 2541 goto pass_check; 2542 } 2543 goto error_out; 2544 break; 2545 default: 2546 goto error_out; 2547 break; 2548 } 2549 2550 pass_check: 2551 2552 if (idiag.cmd.opcode == LPFC_IDIAG_CMD_QUEACC_RD) { 2553 if (count == LPFC_QUE_ACC_BROWSE) 2554 idiag.offset.last_rd = index; 2555 } 2556 2557 if (idiag.cmd.opcode == LPFC_IDIAG_CMD_QUEACC_WR || 2558 idiag.cmd.opcode == LPFC_IDIAG_CMD_QUEACC_ST || 2559 idiag.cmd.opcode == LPFC_IDIAG_CMD_QUEACC_CL) { 2560 /* Additional sanity checks on write operation */ 2561 pque = (struct lpfc_queue *)idiag.ptr_private; 2562 if (offset > pque->entry_size/sizeof(uint32_t) - 1) 2563 goto error_out; 2564 pentry = pque->qe[index].address; 2565 pentry += offset; 2566 if (idiag.cmd.opcode == LPFC_IDIAG_CMD_QUEACC_WR) 2567 *pentry = value; 2568 if (idiag.cmd.opcode == LPFC_IDIAG_CMD_QUEACC_ST) 2569 *pentry |= value; 2570 if (idiag.cmd.opcode == LPFC_IDIAG_CMD_QUEACC_CL) 2571 *pentry &= ~value; 2572 } 2573 return nbytes; 2574 2575 error_out: 2576 /* Clean out command structure on command error out */ 2577 memset(&idiag, 0, sizeof(idiag)); 2578 return -EINVAL; 2579 } 2580 2581 /** 2582 * lpfc_idiag_drbacc_read_reg - idiag debugfs read a doorbell register 2583 * @phba: The pointer to hba structure. 2584 * @pbuffer: The pointer to the buffer to copy the data to. 2585 * @len: The lenght of bytes to copied. 2586 * @drbregid: The id to doorbell registers. 2587 * 2588 * Description: 2589 * This routine reads a doorbell register and copies its content to the 2590 * user buffer pointed to by @pbuffer. 2591 * 2592 * Returns: 2593 * This function returns the amount of data that was copied into @pbuffer. 2594 **/ 2595 static int 2596 lpfc_idiag_drbacc_read_reg(struct lpfc_hba *phba, char *pbuffer, 2597 int len, uint32_t drbregid) 2598 { 2599 2600 if (!pbuffer) 2601 return 0; 2602 2603 switch (drbregid) { 2604 case LPFC_DRB_EQCQ: 2605 len += snprintf(pbuffer+len, LPFC_DRB_ACC_BUF_SIZE-len, 2606 "EQCQ-DRB-REG: 0x%08x\n", 2607 readl(phba->sli4_hba.EQCQDBregaddr)); 2608 break; 2609 case LPFC_DRB_MQ: 2610 len += snprintf(pbuffer+len, LPFC_DRB_ACC_BUF_SIZE-len, 2611 "MQ-DRB-REG: 0x%08x\n", 2612 readl(phba->sli4_hba.MQDBregaddr)); 2613 break; 2614 case LPFC_DRB_WQ: 2615 len += snprintf(pbuffer+len, LPFC_DRB_ACC_BUF_SIZE-len, 2616 "WQ-DRB-REG: 0x%08x\n", 2617 readl(phba->sli4_hba.WQDBregaddr)); 2618 break; 2619 case LPFC_DRB_RQ: 2620 len += snprintf(pbuffer+len, LPFC_DRB_ACC_BUF_SIZE-len, 2621 "RQ-DRB-REG: 0x%08x\n", 2622 readl(phba->sli4_hba.RQDBregaddr)); 2623 break; 2624 default: 2625 break; 2626 } 2627 2628 return len; 2629 } 2630 2631 /** 2632 * lpfc_idiag_drbacc_read - idiag debugfs read port doorbell 2633 * @file: The file pointer to read from. 2634 * @buf: The buffer to copy the data to. 2635 * @nbytes: The number of bytes to read. 2636 * @ppos: The position in the file to start reading from. 2637 * 2638 * Description: 2639 * This routine reads data from the @phba device doorbell register according 2640 * to the idiag command, and copies to user @buf. Depending on the doorbell 2641 * register read command setup, it does either a single doorbell register 2642 * read or dump all doorbell registers. 2643 * 2644 * Returns: 2645 * This function returns the amount of data that was read (this could be less 2646 * than @nbytes if the end of the file was reached) or a negative error value. 2647 **/ 2648 static ssize_t 2649 lpfc_idiag_drbacc_read(struct file *file, char __user *buf, size_t nbytes, 2650 loff_t *ppos) 2651 { 2652 struct lpfc_debug *debug = file->private_data; 2653 struct lpfc_hba *phba = (struct lpfc_hba *)debug->i_private; 2654 uint32_t drb_reg_id, i; 2655 char *pbuffer; 2656 int len = 0; 2657 2658 /* This is a user read operation */ 2659 debug->op = LPFC_IDIAG_OP_RD; 2660 2661 if (!debug->buffer) 2662 debug->buffer = kmalloc(LPFC_DRB_ACC_BUF_SIZE, GFP_KERNEL); 2663 if (!debug->buffer) 2664 return 0; 2665 pbuffer = debug->buffer; 2666 2667 if (*ppos) 2668 return 0; 2669 2670 if (idiag.cmd.opcode == LPFC_IDIAG_CMD_DRBACC_RD) 2671 drb_reg_id = idiag.cmd.data[IDIAG_DRBACC_REGID_INDX]; 2672 else 2673 return 0; 2674 2675 if (drb_reg_id == LPFC_DRB_ACC_ALL) 2676 for (i = 1; i <= LPFC_DRB_MAX; i++) 2677 len = lpfc_idiag_drbacc_read_reg(phba, 2678 pbuffer, len, i); 2679 else 2680 len = lpfc_idiag_drbacc_read_reg(phba, 2681 pbuffer, len, drb_reg_id); 2682 2683 return simple_read_from_buffer(buf, nbytes, ppos, pbuffer, len); 2684 } 2685 2686 /** 2687 * lpfc_idiag_drbacc_write - Syntax check and set up idiag drbacc commands 2688 * @file: The file pointer to read from. 2689 * @buf: The buffer to copy the user data from. 2690 * @nbytes: The number of bytes to get. 2691 * @ppos: The position in the file to start reading from. 2692 * 2693 * This routine get the debugfs idiag command struct from user space and then 2694 * perform the syntax check for port doorbell register read (dump) or write 2695 * (set) command accordingly. In the case of port queue read command, it sets 2696 * up the command in the idiag command struct for the following debugfs read 2697 * operation. In the case of port doorbell register write operation, it 2698 * executes the write operation into the port doorbell register accordingly. 2699 * 2700 * It returns the @nbytges passing in from debugfs user space when successful. 2701 * In case of error conditions, it returns proper error code back to the user 2702 * space. 2703 **/ 2704 static ssize_t 2705 lpfc_idiag_drbacc_write(struct file *file, const char __user *buf, 2706 size_t nbytes, loff_t *ppos) 2707 { 2708 struct lpfc_debug *debug = file->private_data; 2709 struct lpfc_hba *phba = (struct lpfc_hba *)debug->i_private; 2710 uint32_t drb_reg_id, value, reg_val = 0; 2711 void __iomem *drb_reg; 2712 int rc; 2713 2714 /* This is a user write operation */ 2715 debug->op = LPFC_IDIAG_OP_WR; 2716 2717 rc = lpfc_idiag_cmd_get(buf, nbytes, &idiag.cmd); 2718 if (rc < 0) 2719 return rc; 2720 2721 /* Sanity check on command line arguments */ 2722 drb_reg_id = idiag.cmd.data[IDIAG_DRBACC_REGID_INDX]; 2723 value = idiag.cmd.data[IDIAG_DRBACC_VALUE_INDX]; 2724 2725 if (idiag.cmd.opcode == LPFC_IDIAG_CMD_DRBACC_WR || 2726 idiag.cmd.opcode == LPFC_IDIAG_CMD_DRBACC_ST || 2727 idiag.cmd.opcode == LPFC_IDIAG_CMD_DRBACC_CL) { 2728 if (rc != LPFC_DRB_ACC_WR_CMD_ARG) 2729 goto error_out; 2730 if (drb_reg_id > LPFC_DRB_MAX) 2731 goto error_out; 2732 } else if (idiag.cmd.opcode == LPFC_IDIAG_CMD_DRBACC_RD) { 2733 if (rc != LPFC_DRB_ACC_RD_CMD_ARG) 2734 goto error_out; 2735 if ((drb_reg_id > LPFC_DRB_MAX) && 2736 (drb_reg_id != LPFC_DRB_ACC_ALL)) 2737 goto error_out; 2738 } else 2739 goto error_out; 2740 2741 /* Perform the write access operation */ 2742 if (idiag.cmd.opcode == LPFC_IDIAG_CMD_DRBACC_WR || 2743 idiag.cmd.opcode == LPFC_IDIAG_CMD_DRBACC_ST || 2744 idiag.cmd.opcode == LPFC_IDIAG_CMD_DRBACC_CL) { 2745 switch (drb_reg_id) { 2746 case LPFC_DRB_EQCQ: 2747 drb_reg = phba->sli4_hba.EQCQDBregaddr; 2748 break; 2749 case LPFC_DRB_MQ: 2750 drb_reg = phba->sli4_hba.MQDBregaddr; 2751 break; 2752 case LPFC_DRB_WQ: 2753 drb_reg = phba->sli4_hba.WQDBregaddr; 2754 break; 2755 case LPFC_DRB_RQ: 2756 drb_reg = phba->sli4_hba.RQDBregaddr; 2757 break; 2758 default: 2759 goto error_out; 2760 } 2761 2762 if (idiag.cmd.opcode == LPFC_IDIAG_CMD_DRBACC_WR) 2763 reg_val = value; 2764 if (idiag.cmd.opcode == LPFC_IDIAG_CMD_DRBACC_ST) { 2765 reg_val = readl(drb_reg); 2766 reg_val |= value; 2767 } 2768 if (idiag.cmd.opcode == LPFC_IDIAG_CMD_DRBACC_CL) { 2769 reg_val = readl(drb_reg); 2770 reg_val &= ~value; 2771 } 2772 writel(reg_val, drb_reg); 2773 readl(drb_reg); /* flush */ 2774 } 2775 return nbytes; 2776 2777 error_out: 2778 /* Clean out command structure on command error out */ 2779 memset(&idiag, 0, sizeof(idiag)); 2780 return -EINVAL; 2781 } 2782 2783 /** 2784 * lpfc_idiag_ctlacc_read_reg - idiag debugfs read a control registers 2785 * @phba: The pointer to hba structure. 2786 * @pbuffer: The pointer to the buffer to copy the data to. 2787 * @len: The lenght of bytes to copied. 2788 * @drbregid: The id to doorbell registers. 2789 * 2790 * Description: 2791 * This routine reads a control register and copies its content to the 2792 * user buffer pointed to by @pbuffer. 2793 * 2794 * Returns: 2795 * This function returns the amount of data that was copied into @pbuffer. 2796 **/ 2797 static int 2798 lpfc_idiag_ctlacc_read_reg(struct lpfc_hba *phba, char *pbuffer, 2799 int len, uint32_t ctlregid) 2800 { 2801 2802 if (!pbuffer) 2803 return 0; 2804 2805 switch (ctlregid) { 2806 case LPFC_CTL_PORT_SEM: 2807 len += snprintf(pbuffer+len, LPFC_CTL_ACC_BUF_SIZE-len, 2808 "Port SemReg: 0x%08x\n", 2809 readl(phba->sli4_hba.conf_regs_memmap_p + 2810 LPFC_CTL_PORT_SEM_OFFSET)); 2811 break; 2812 case LPFC_CTL_PORT_STA: 2813 len += snprintf(pbuffer+len, LPFC_CTL_ACC_BUF_SIZE-len, 2814 "Port StaReg: 0x%08x\n", 2815 readl(phba->sli4_hba.conf_regs_memmap_p + 2816 LPFC_CTL_PORT_STA_OFFSET)); 2817 break; 2818 case LPFC_CTL_PORT_CTL: 2819 len += snprintf(pbuffer+len, LPFC_CTL_ACC_BUF_SIZE-len, 2820 "Port CtlReg: 0x%08x\n", 2821 readl(phba->sli4_hba.conf_regs_memmap_p + 2822 LPFC_CTL_PORT_CTL_OFFSET)); 2823 break; 2824 case LPFC_CTL_PORT_ER1: 2825 len += snprintf(pbuffer+len, LPFC_CTL_ACC_BUF_SIZE-len, 2826 "Port Er1Reg: 0x%08x\n", 2827 readl(phba->sli4_hba.conf_regs_memmap_p + 2828 LPFC_CTL_PORT_ER1_OFFSET)); 2829 break; 2830 case LPFC_CTL_PORT_ER2: 2831 len += snprintf(pbuffer+len, LPFC_CTL_ACC_BUF_SIZE-len, 2832 "Port Er2Reg: 0x%08x\n", 2833 readl(phba->sli4_hba.conf_regs_memmap_p + 2834 LPFC_CTL_PORT_ER2_OFFSET)); 2835 break; 2836 case LPFC_CTL_PDEV_CTL: 2837 len += snprintf(pbuffer+len, LPFC_CTL_ACC_BUF_SIZE-len, 2838 "PDev CtlReg: 0x%08x\n", 2839 readl(phba->sli4_hba.conf_regs_memmap_p + 2840 LPFC_CTL_PDEV_CTL_OFFSET)); 2841 break; 2842 default: 2843 break; 2844 } 2845 return len; 2846 } 2847 2848 /** 2849 * lpfc_idiag_ctlacc_read - idiag debugfs read port and device control register 2850 * @file: The file pointer to read from. 2851 * @buf: The buffer to copy the data to. 2852 * @nbytes: The number of bytes to read. 2853 * @ppos: The position in the file to start reading from. 2854 * 2855 * Description: 2856 * This routine reads data from the @phba port and device registers according 2857 * to the idiag command, and copies to user @buf. 2858 * 2859 * Returns: 2860 * This function returns the amount of data that was read (this could be less 2861 * than @nbytes if the end of the file was reached) or a negative error value. 2862 **/ 2863 static ssize_t 2864 lpfc_idiag_ctlacc_read(struct file *file, char __user *buf, size_t nbytes, 2865 loff_t *ppos) 2866 { 2867 struct lpfc_debug *debug = file->private_data; 2868 struct lpfc_hba *phba = (struct lpfc_hba *)debug->i_private; 2869 uint32_t ctl_reg_id, i; 2870 char *pbuffer; 2871 int len = 0; 2872 2873 /* This is a user read operation */ 2874 debug->op = LPFC_IDIAG_OP_RD; 2875 2876 if (!debug->buffer) 2877 debug->buffer = kmalloc(LPFC_CTL_ACC_BUF_SIZE, GFP_KERNEL); 2878 if (!debug->buffer) 2879 return 0; 2880 pbuffer = debug->buffer; 2881 2882 if (*ppos) 2883 return 0; 2884 2885 if (idiag.cmd.opcode == LPFC_IDIAG_CMD_CTLACC_RD) 2886 ctl_reg_id = idiag.cmd.data[IDIAG_CTLACC_REGID_INDX]; 2887 else 2888 return 0; 2889 2890 if (ctl_reg_id == LPFC_CTL_ACC_ALL) 2891 for (i = 1; i <= LPFC_CTL_MAX; i++) 2892 len = lpfc_idiag_ctlacc_read_reg(phba, 2893 pbuffer, len, i); 2894 else 2895 len = lpfc_idiag_ctlacc_read_reg(phba, 2896 pbuffer, len, ctl_reg_id); 2897 2898 return simple_read_from_buffer(buf, nbytes, ppos, pbuffer, len); 2899 } 2900 2901 /** 2902 * lpfc_idiag_ctlacc_write - Syntax check and set up idiag ctlacc commands 2903 * @file: The file pointer to read from. 2904 * @buf: The buffer to copy the user data from. 2905 * @nbytes: The number of bytes to get. 2906 * @ppos: The position in the file to start reading from. 2907 * 2908 * This routine get the debugfs idiag command struct from user space and then 2909 * perform the syntax check for port and device control register read (dump) 2910 * or write (set) command accordingly. 2911 * 2912 * It returns the @nbytges passing in from debugfs user space when successful. 2913 * In case of error conditions, it returns proper error code back to the user 2914 * space. 2915 **/ 2916 static ssize_t 2917 lpfc_idiag_ctlacc_write(struct file *file, const char __user *buf, 2918 size_t nbytes, loff_t *ppos) 2919 { 2920 struct lpfc_debug *debug = file->private_data; 2921 struct lpfc_hba *phba = (struct lpfc_hba *)debug->i_private; 2922 uint32_t ctl_reg_id, value, reg_val = 0; 2923 void __iomem *ctl_reg; 2924 int rc; 2925 2926 /* This is a user write operation */ 2927 debug->op = LPFC_IDIAG_OP_WR; 2928 2929 rc = lpfc_idiag_cmd_get(buf, nbytes, &idiag.cmd); 2930 if (rc < 0) 2931 return rc; 2932 2933 /* Sanity check on command line arguments */ 2934 ctl_reg_id = idiag.cmd.data[IDIAG_CTLACC_REGID_INDX]; 2935 value = idiag.cmd.data[IDIAG_CTLACC_VALUE_INDX]; 2936 2937 if (idiag.cmd.opcode == LPFC_IDIAG_CMD_CTLACC_WR || 2938 idiag.cmd.opcode == LPFC_IDIAG_CMD_CTLACC_ST || 2939 idiag.cmd.opcode == LPFC_IDIAG_CMD_CTLACC_CL) { 2940 if (rc != LPFC_CTL_ACC_WR_CMD_ARG) 2941 goto error_out; 2942 if (ctl_reg_id > LPFC_CTL_MAX) 2943 goto error_out; 2944 } else if (idiag.cmd.opcode == LPFC_IDIAG_CMD_CTLACC_RD) { 2945 if (rc != LPFC_CTL_ACC_RD_CMD_ARG) 2946 goto error_out; 2947 if ((ctl_reg_id > LPFC_CTL_MAX) && 2948 (ctl_reg_id != LPFC_CTL_ACC_ALL)) 2949 goto error_out; 2950 } else 2951 goto error_out; 2952 2953 /* Perform the write access operation */ 2954 if (idiag.cmd.opcode == LPFC_IDIAG_CMD_CTLACC_WR || 2955 idiag.cmd.opcode == LPFC_IDIAG_CMD_CTLACC_ST || 2956 idiag.cmd.opcode == LPFC_IDIAG_CMD_CTLACC_CL) { 2957 switch (ctl_reg_id) { 2958 case LPFC_CTL_PORT_SEM: 2959 ctl_reg = phba->sli4_hba.conf_regs_memmap_p + 2960 LPFC_CTL_PORT_SEM_OFFSET; 2961 break; 2962 case LPFC_CTL_PORT_STA: 2963 ctl_reg = phba->sli4_hba.conf_regs_memmap_p + 2964 LPFC_CTL_PORT_STA_OFFSET; 2965 break; 2966 case LPFC_CTL_PORT_CTL: 2967 ctl_reg = phba->sli4_hba.conf_regs_memmap_p + 2968 LPFC_CTL_PORT_CTL_OFFSET; 2969 break; 2970 case LPFC_CTL_PORT_ER1: 2971 ctl_reg = phba->sli4_hba.conf_regs_memmap_p + 2972 LPFC_CTL_PORT_ER1_OFFSET; 2973 break; 2974 case LPFC_CTL_PORT_ER2: 2975 ctl_reg = phba->sli4_hba.conf_regs_memmap_p + 2976 LPFC_CTL_PORT_ER2_OFFSET; 2977 break; 2978 case LPFC_CTL_PDEV_CTL: 2979 ctl_reg = phba->sli4_hba.conf_regs_memmap_p + 2980 LPFC_CTL_PDEV_CTL_OFFSET; 2981 break; 2982 default: 2983 goto error_out; 2984 } 2985 2986 if (idiag.cmd.opcode == LPFC_IDIAG_CMD_CTLACC_WR) 2987 reg_val = value; 2988 if (idiag.cmd.opcode == LPFC_IDIAG_CMD_CTLACC_ST) { 2989 reg_val = readl(ctl_reg); 2990 reg_val |= value; 2991 } 2992 if (idiag.cmd.opcode == LPFC_IDIAG_CMD_CTLACC_CL) { 2993 reg_val = readl(ctl_reg); 2994 reg_val &= ~value; 2995 } 2996 writel(reg_val, ctl_reg); 2997 readl(ctl_reg); /* flush */ 2998 } 2999 return nbytes; 3000 3001 error_out: 3002 /* Clean out command structure on command error out */ 3003 memset(&idiag, 0, sizeof(idiag)); 3004 return -EINVAL; 3005 } 3006 3007 /** 3008 * lpfc_idiag_mbxacc_get_setup - idiag debugfs get mailbox access setup 3009 * @phba: Pointer to HBA context object. 3010 * @pbuffer: Pointer to data buffer. 3011 * 3012 * Description: 3013 * This routine gets the driver mailbox access debugfs setup information. 3014 * 3015 * Returns: 3016 * This function returns the amount of data that was read (this could be less 3017 * than @nbytes if the end of the file was reached) or a negative error value. 3018 **/ 3019 static int 3020 lpfc_idiag_mbxacc_get_setup(struct lpfc_hba *phba, char *pbuffer) 3021 { 3022 uint32_t mbx_dump_map, mbx_dump_cnt, mbx_word_cnt, mbx_mbox_cmd; 3023 int len = 0; 3024 3025 mbx_mbox_cmd = idiag.cmd.data[IDIAG_MBXACC_MBCMD_INDX]; 3026 mbx_dump_map = idiag.cmd.data[IDIAG_MBXACC_DPMAP_INDX]; 3027 mbx_dump_cnt = idiag.cmd.data[IDIAG_MBXACC_DPCNT_INDX]; 3028 mbx_word_cnt = idiag.cmd.data[IDIAG_MBXACC_WDCNT_INDX]; 3029 3030 len += snprintf(pbuffer+len, LPFC_MBX_ACC_BUF_SIZE-len, 3031 "mbx_dump_map: 0x%08x\n", mbx_dump_map); 3032 len += snprintf(pbuffer+len, LPFC_MBX_ACC_BUF_SIZE-len, 3033 "mbx_dump_cnt: %04d\n", mbx_dump_cnt); 3034 len += snprintf(pbuffer+len, LPFC_MBX_ACC_BUF_SIZE-len, 3035 "mbx_word_cnt: %04d\n", mbx_word_cnt); 3036 len += snprintf(pbuffer+len, LPFC_MBX_ACC_BUF_SIZE-len, 3037 "mbx_mbox_cmd: 0x%02x\n", mbx_mbox_cmd); 3038 3039 return len; 3040 } 3041 3042 /** 3043 * lpfc_idiag_mbxacc_read - idiag debugfs read on mailbox access 3044 * @file: The file pointer to read from. 3045 * @buf: The buffer to copy the data to. 3046 * @nbytes: The number of bytes to read. 3047 * @ppos: The position in the file to start reading from. 3048 * 3049 * Description: 3050 * This routine reads data from the @phba driver mailbox access debugfs setup 3051 * information. 3052 * 3053 * Returns: 3054 * This function returns the amount of data that was read (this could be less 3055 * than @nbytes if the end of the file was reached) or a negative error value. 3056 **/ 3057 static ssize_t 3058 lpfc_idiag_mbxacc_read(struct file *file, char __user *buf, size_t nbytes, 3059 loff_t *ppos) 3060 { 3061 struct lpfc_debug *debug = file->private_data; 3062 struct lpfc_hba *phba = (struct lpfc_hba *)debug->i_private; 3063 char *pbuffer; 3064 int len = 0; 3065 3066 /* This is a user read operation */ 3067 debug->op = LPFC_IDIAG_OP_RD; 3068 3069 if (!debug->buffer) 3070 debug->buffer = kmalloc(LPFC_MBX_ACC_BUF_SIZE, GFP_KERNEL); 3071 if (!debug->buffer) 3072 return 0; 3073 pbuffer = debug->buffer; 3074 3075 if (*ppos) 3076 return 0; 3077 3078 if ((idiag.cmd.opcode != LPFC_IDIAG_CMD_MBXACC_DP) && 3079 (idiag.cmd.opcode != LPFC_IDIAG_BSG_MBXACC_DP)) 3080 return 0; 3081 3082 len = lpfc_idiag_mbxacc_get_setup(phba, pbuffer); 3083 3084 return simple_read_from_buffer(buf, nbytes, ppos, pbuffer, len); 3085 } 3086 3087 /** 3088 * lpfc_idiag_mbxacc_write - Syntax check and set up idiag mbxacc commands 3089 * @file: The file pointer to read from. 3090 * @buf: The buffer to copy the user data from. 3091 * @nbytes: The number of bytes to get. 3092 * @ppos: The position in the file to start reading from. 3093 * 3094 * This routine get the debugfs idiag command struct from user space and then 3095 * perform the syntax check for driver mailbox command (dump) and sets up the 3096 * necessary states in the idiag command struct accordingly. 3097 * 3098 * It returns the @nbytges passing in from debugfs user space when successful. 3099 * In case of error conditions, it returns proper error code back to the user 3100 * space. 3101 **/ 3102 static ssize_t 3103 lpfc_idiag_mbxacc_write(struct file *file, const char __user *buf, 3104 size_t nbytes, loff_t *ppos) 3105 { 3106 struct lpfc_debug *debug = file->private_data; 3107 uint32_t mbx_dump_map, mbx_dump_cnt, mbx_word_cnt, mbx_mbox_cmd; 3108 int rc; 3109 3110 /* This is a user write operation */ 3111 debug->op = LPFC_IDIAG_OP_WR; 3112 3113 rc = lpfc_idiag_cmd_get(buf, nbytes, &idiag.cmd); 3114 if (rc < 0) 3115 return rc; 3116 3117 /* Sanity check on command line arguments */ 3118 mbx_mbox_cmd = idiag.cmd.data[IDIAG_MBXACC_MBCMD_INDX]; 3119 mbx_dump_map = idiag.cmd.data[IDIAG_MBXACC_DPMAP_INDX]; 3120 mbx_dump_cnt = idiag.cmd.data[IDIAG_MBXACC_DPCNT_INDX]; 3121 mbx_word_cnt = idiag.cmd.data[IDIAG_MBXACC_WDCNT_INDX]; 3122 3123 if (idiag.cmd.opcode == LPFC_IDIAG_CMD_MBXACC_DP) { 3124 if (!(mbx_dump_map & LPFC_MBX_DMP_MBX_ALL)) 3125 goto error_out; 3126 if ((mbx_dump_map & ~LPFC_MBX_DMP_MBX_ALL) && 3127 (mbx_dump_map != LPFC_MBX_DMP_ALL)) 3128 goto error_out; 3129 if (mbx_word_cnt > sizeof(MAILBOX_t)) 3130 goto error_out; 3131 } else if (idiag.cmd.opcode == LPFC_IDIAG_BSG_MBXACC_DP) { 3132 if (!(mbx_dump_map & LPFC_BSG_DMP_MBX_ALL)) 3133 goto error_out; 3134 if ((mbx_dump_map & ~LPFC_BSG_DMP_MBX_ALL) && 3135 (mbx_dump_map != LPFC_MBX_DMP_ALL)) 3136 goto error_out; 3137 if (mbx_word_cnt > (BSG_MBOX_SIZE)/4) 3138 goto error_out; 3139 if (mbx_mbox_cmd != 0x9b) 3140 goto error_out; 3141 } else 3142 goto error_out; 3143 3144 if (mbx_word_cnt == 0) 3145 goto error_out; 3146 if (rc != LPFC_MBX_DMP_ARG) 3147 goto error_out; 3148 if (mbx_mbox_cmd & ~0xff) 3149 goto error_out; 3150 3151 /* condition for stop mailbox dump */ 3152 if (mbx_dump_cnt == 0) 3153 goto reset_out; 3154 3155 return nbytes; 3156 3157 reset_out: 3158 /* Clean out command structure on command error out */ 3159 memset(&idiag, 0, sizeof(idiag)); 3160 return nbytes; 3161 3162 error_out: 3163 /* Clean out command structure on command error out */ 3164 memset(&idiag, 0, sizeof(idiag)); 3165 return -EINVAL; 3166 } 3167 3168 /** 3169 * lpfc_idiag_extacc_avail_get - get the available extents information 3170 * @phba: pointer to lpfc hba data structure. 3171 * @pbuffer: pointer to internal buffer. 3172 * @len: length into the internal buffer data has been copied. 3173 * 3174 * Description: 3175 * This routine is to get the available extent information. 3176 * 3177 * Returns: 3178 * overall lenth of the data read into the internal buffer. 3179 **/ 3180 static int 3181 lpfc_idiag_extacc_avail_get(struct lpfc_hba *phba, char *pbuffer, int len) 3182 { 3183 uint16_t ext_cnt, ext_size; 3184 3185 len += snprintf(pbuffer+len, LPFC_EXT_ACC_BUF_SIZE-len, 3186 "\nAvailable Extents Information:\n"); 3187 3188 len += snprintf(pbuffer+len, LPFC_EXT_ACC_BUF_SIZE-len, 3189 "\tPort Available VPI extents: "); 3190 lpfc_sli4_get_avail_extnt_rsrc(phba, LPFC_RSC_TYPE_FCOE_VPI, 3191 &ext_cnt, &ext_size); 3192 len += snprintf(pbuffer+len, LPFC_EXT_ACC_BUF_SIZE-len, 3193 "Count %3d, Size %3d\n", ext_cnt, ext_size); 3194 3195 len += snprintf(pbuffer+len, LPFC_EXT_ACC_BUF_SIZE-len, 3196 "\tPort Available VFI extents: "); 3197 lpfc_sli4_get_avail_extnt_rsrc(phba, LPFC_RSC_TYPE_FCOE_VFI, 3198 &ext_cnt, &ext_size); 3199 len += snprintf(pbuffer+len, LPFC_EXT_ACC_BUF_SIZE-len, 3200 "Count %3d, Size %3d\n", ext_cnt, ext_size); 3201 3202 len += snprintf(pbuffer+len, LPFC_EXT_ACC_BUF_SIZE-len, 3203 "\tPort Available RPI extents: "); 3204 lpfc_sli4_get_avail_extnt_rsrc(phba, LPFC_RSC_TYPE_FCOE_RPI, 3205 &ext_cnt, &ext_size); 3206 len += snprintf(pbuffer+len, LPFC_EXT_ACC_BUF_SIZE-len, 3207 "Count %3d, Size %3d\n", ext_cnt, ext_size); 3208 3209 len += snprintf(pbuffer+len, LPFC_EXT_ACC_BUF_SIZE-len, 3210 "\tPort Available XRI extents: "); 3211 lpfc_sli4_get_avail_extnt_rsrc(phba, LPFC_RSC_TYPE_FCOE_XRI, 3212 &ext_cnt, &ext_size); 3213 len += snprintf(pbuffer+len, LPFC_EXT_ACC_BUF_SIZE-len, 3214 "Count %3d, Size %3d\n", ext_cnt, ext_size); 3215 3216 return len; 3217 } 3218 3219 /** 3220 * lpfc_idiag_extacc_alloc_get - get the allocated extents information 3221 * @phba: pointer to lpfc hba data structure. 3222 * @pbuffer: pointer to internal buffer. 3223 * @len: length into the internal buffer data has been copied. 3224 * 3225 * Description: 3226 * This routine is to get the allocated extent information. 3227 * 3228 * Returns: 3229 * overall lenth of the data read into the internal buffer. 3230 **/ 3231 static int 3232 lpfc_idiag_extacc_alloc_get(struct lpfc_hba *phba, char *pbuffer, int len) 3233 { 3234 uint16_t ext_cnt, ext_size; 3235 int rc; 3236 3237 len += snprintf(pbuffer+len, LPFC_EXT_ACC_BUF_SIZE-len, 3238 "\nAllocated Extents Information:\n"); 3239 3240 len += snprintf(pbuffer+len, LPFC_EXT_ACC_BUF_SIZE-len, 3241 "\tHost Allocated VPI extents: "); 3242 rc = lpfc_sli4_get_allocated_extnts(phba, LPFC_RSC_TYPE_FCOE_VPI, 3243 &ext_cnt, &ext_size); 3244 if (!rc) 3245 len += snprintf(pbuffer+len, LPFC_EXT_ACC_BUF_SIZE-len, 3246 "Port %d Extent %3d, Size %3d\n", 3247 phba->brd_no, ext_cnt, ext_size); 3248 else 3249 len += snprintf(pbuffer+len, LPFC_EXT_ACC_BUF_SIZE-len, 3250 "N/A\n"); 3251 3252 len += snprintf(pbuffer+len, LPFC_EXT_ACC_BUF_SIZE-len, 3253 "\tHost Allocated VFI extents: "); 3254 rc = lpfc_sli4_get_allocated_extnts(phba, LPFC_RSC_TYPE_FCOE_VFI, 3255 &ext_cnt, &ext_size); 3256 if (!rc) 3257 len += snprintf(pbuffer+len, LPFC_EXT_ACC_BUF_SIZE-len, 3258 "Port %d Extent %3d, Size %3d\n", 3259 phba->brd_no, ext_cnt, ext_size); 3260 else 3261 len += snprintf(pbuffer+len, LPFC_EXT_ACC_BUF_SIZE-len, 3262 "N/A\n"); 3263 3264 len += snprintf(pbuffer+len, LPFC_EXT_ACC_BUF_SIZE-len, 3265 "\tHost Allocated RPI extents: "); 3266 rc = lpfc_sli4_get_allocated_extnts(phba, LPFC_RSC_TYPE_FCOE_RPI, 3267 &ext_cnt, &ext_size); 3268 if (!rc) 3269 len += snprintf(pbuffer+len, LPFC_EXT_ACC_BUF_SIZE-len, 3270 "Port %d Extent %3d, Size %3d\n", 3271 phba->brd_no, ext_cnt, ext_size); 3272 else 3273 len += snprintf(pbuffer+len, LPFC_EXT_ACC_BUF_SIZE-len, 3274 "N/A\n"); 3275 3276 len += snprintf(pbuffer+len, LPFC_EXT_ACC_BUF_SIZE-len, 3277 "\tHost Allocated XRI extents: "); 3278 rc = lpfc_sli4_get_allocated_extnts(phba, LPFC_RSC_TYPE_FCOE_XRI, 3279 &ext_cnt, &ext_size); 3280 if (!rc) 3281 len += snprintf(pbuffer+len, LPFC_EXT_ACC_BUF_SIZE-len, 3282 "Port %d Extent %3d, Size %3d\n", 3283 phba->brd_no, ext_cnt, ext_size); 3284 else 3285 len += snprintf(pbuffer+len, LPFC_EXT_ACC_BUF_SIZE-len, 3286 "N/A\n"); 3287 3288 return len; 3289 } 3290 3291 /** 3292 * lpfc_idiag_extacc_drivr_get - get driver extent information 3293 * @phba: pointer to lpfc hba data structure. 3294 * @pbuffer: pointer to internal buffer. 3295 * @len: length into the internal buffer data has been copied. 3296 * 3297 * Description: 3298 * This routine is to get the driver extent information. 3299 * 3300 * Returns: 3301 * overall lenth of the data read into the internal buffer. 3302 **/ 3303 static int 3304 lpfc_idiag_extacc_drivr_get(struct lpfc_hba *phba, char *pbuffer, int len) 3305 { 3306 struct lpfc_rsrc_blks *rsrc_blks; 3307 int index; 3308 3309 len += snprintf(pbuffer+len, LPFC_EXT_ACC_BUF_SIZE-len, 3310 "\nDriver Extents Information:\n"); 3311 3312 len += snprintf(pbuffer+len, LPFC_EXT_ACC_BUF_SIZE-len, 3313 "\tVPI extents:\n"); 3314 index = 0; 3315 list_for_each_entry(rsrc_blks, &phba->lpfc_vpi_blk_list, list) { 3316 len += snprintf(pbuffer+len, LPFC_EXT_ACC_BUF_SIZE-len, 3317 "\t\tBlock %3d: Start %4d, Count %4d\n", 3318 index, rsrc_blks->rsrc_start, 3319 rsrc_blks->rsrc_size); 3320 index++; 3321 } 3322 len += snprintf(pbuffer+len, LPFC_EXT_ACC_BUF_SIZE-len, 3323 "\tVFI extents:\n"); 3324 index = 0; 3325 list_for_each_entry(rsrc_blks, &phba->sli4_hba.lpfc_vfi_blk_list, 3326 list) { 3327 len += snprintf(pbuffer+len, LPFC_EXT_ACC_BUF_SIZE-len, 3328 "\t\tBlock %3d: Start %4d, Count %4d\n", 3329 index, rsrc_blks->rsrc_start, 3330 rsrc_blks->rsrc_size); 3331 index++; 3332 } 3333 3334 len += snprintf(pbuffer+len, LPFC_EXT_ACC_BUF_SIZE-len, 3335 "\tRPI extents:\n"); 3336 index = 0; 3337 list_for_each_entry(rsrc_blks, &phba->sli4_hba.lpfc_rpi_blk_list, 3338 list) { 3339 len += snprintf(pbuffer+len, LPFC_EXT_ACC_BUF_SIZE-len, 3340 "\t\tBlock %3d: Start %4d, Count %4d\n", 3341 index, rsrc_blks->rsrc_start, 3342 rsrc_blks->rsrc_size); 3343 index++; 3344 } 3345 3346 len += snprintf(pbuffer+len, LPFC_EXT_ACC_BUF_SIZE-len, 3347 "\tXRI extents:\n"); 3348 index = 0; 3349 list_for_each_entry(rsrc_blks, &phba->sli4_hba.lpfc_xri_blk_list, 3350 list) { 3351 len += snprintf(pbuffer+len, LPFC_EXT_ACC_BUF_SIZE-len, 3352 "\t\tBlock %3d: Start %4d, Count %4d\n", 3353 index, rsrc_blks->rsrc_start, 3354 rsrc_blks->rsrc_size); 3355 index++; 3356 } 3357 3358 return len; 3359 } 3360 3361 /** 3362 * lpfc_idiag_extacc_write - Syntax check and set up idiag extacc commands 3363 * @file: The file pointer to read from. 3364 * @buf: The buffer to copy the user data from. 3365 * @nbytes: The number of bytes to get. 3366 * @ppos: The position in the file to start reading from. 3367 * 3368 * This routine get the debugfs idiag command struct from user space and then 3369 * perform the syntax check for extent information access commands and sets 3370 * up the necessary states in the idiag command struct accordingly. 3371 * 3372 * It returns the @nbytges passing in from debugfs user space when successful. 3373 * In case of error conditions, it returns proper error code back to the user 3374 * space. 3375 **/ 3376 static ssize_t 3377 lpfc_idiag_extacc_write(struct file *file, const char __user *buf, 3378 size_t nbytes, loff_t *ppos) 3379 { 3380 struct lpfc_debug *debug = file->private_data; 3381 uint32_t ext_map; 3382 int rc; 3383 3384 /* This is a user write operation */ 3385 debug->op = LPFC_IDIAG_OP_WR; 3386 3387 rc = lpfc_idiag_cmd_get(buf, nbytes, &idiag.cmd); 3388 if (rc < 0) 3389 return rc; 3390 3391 ext_map = idiag.cmd.data[IDIAG_EXTACC_EXMAP_INDX]; 3392 3393 if (idiag.cmd.opcode != LPFC_IDIAG_CMD_EXTACC_RD) 3394 goto error_out; 3395 if (rc != LPFC_EXT_ACC_CMD_ARG) 3396 goto error_out; 3397 if (!(ext_map & LPFC_EXT_ACC_ALL)) 3398 goto error_out; 3399 3400 return nbytes; 3401 error_out: 3402 /* Clean out command structure on command error out */ 3403 memset(&idiag, 0, sizeof(idiag)); 3404 return -EINVAL; 3405 } 3406 3407 /** 3408 * lpfc_idiag_extacc_read - idiag debugfs read access to extent information 3409 * @file: The file pointer to read from. 3410 * @buf: The buffer to copy the data to. 3411 * @nbytes: The number of bytes to read. 3412 * @ppos: The position in the file to start reading from. 3413 * 3414 * Description: 3415 * This routine reads data from the proper extent information according to 3416 * the idiag command, and copies to user @buf. 3417 * 3418 * Returns: 3419 * This function returns the amount of data that was read (this could be less 3420 * than @nbytes if the end of the file was reached) or a negative error value. 3421 **/ 3422 static ssize_t 3423 lpfc_idiag_extacc_read(struct file *file, char __user *buf, size_t nbytes, 3424 loff_t *ppos) 3425 { 3426 struct lpfc_debug *debug = file->private_data; 3427 struct lpfc_hba *phba = (struct lpfc_hba *)debug->i_private; 3428 char *pbuffer; 3429 uint32_t ext_map; 3430 int len = 0; 3431 3432 /* This is a user read operation */ 3433 debug->op = LPFC_IDIAG_OP_RD; 3434 3435 if (!debug->buffer) 3436 debug->buffer = kmalloc(LPFC_EXT_ACC_BUF_SIZE, GFP_KERNEL); 3437 if (!debug->buffer) 3438 return 0; 3439 pbuffer = debug->buffer; 3440 if (*ppos) 3441 return 0; 3442 if (idiag.cmd.opcode != LPFC_IDIAG_CMD_EXTACC_RD) 3443 return 0; 3444 3445 ext_map = idiag.cmd.data[IDIAG_EXTACC_EXMAP_INDX]; 3446 if (ext_map & LPFC_EXT_ACC_AVAIL) 3447 len = lpfc_idiag_extacc_avail_get(phba, pbuffer, len); 3448 if (ext_map & LPFC_EXT_ACC_ALLOC) 3449 len = lpfc_idiag_extacc_alloc_get(phba, pbuffer, len); 3450 if (ext_map & LPFC_EXT_ACC_DRIVR) 3451 len = lpfc_idiag_extacc_drivr_get(phba, pbuffer, len); 3452 3453 return simple_read_from_buffer(buf, nbytes, ppos, pbuffer, len); 3454 } 3455 3456 #undef lpfc_debugfs_op_disc_trc 3457 static const struct file_operations lpfc_debugfs_op_disc_trc = { 3458 .owner = THIS_MODULE, 3459 .open = lpfc_debugfs_disc_trc_open, 3460 .llseek = lpfc_debugfs_lseek, 3461 .read = lpfc_debugfs_read, 3462 .release = lpfc_debugfs_release, 3463 }; 3464 3465 #undef lpfc_debugfs_op_nodelist 3466 static const struct file_operations lpfc_debugfs_op_nodelist = { 3467 .owner = THIS_MODULE, 3468 .open = lpfc_debugfs_nodelist_open, 3469 .llseek = lpfc_debugfs_lseek, 3470 .read = lpfc_debugfs_read, 3471 .release = lpfc_debugfs_release, 3472 }; 3473 3474 #undef lpfc_debugfs_op_hbqinfo 3475 static const struct file_operations lpfc_debugfs_op_hbqinfo = { 3476 .owner = THIS_MODULE, 3477 .open = lpfc_debugfs_hbqinfo_open, 3478 .llseek = lpfc_debugfs_lseek, 3479 .read = lpfc_debugfs_read, 3480 .release = lpfc_debugfs_release, 3481 }; 3482 3483 #undef lpfc_debugfs_op_dumpHBASlim 3484 static const struct file_operations lpfc_debugfs_op_dumpHBASlim = { 3485 .owner = THIS_MODULE, 3486 .open = lpfc_debugfs_dumpHBASlim_open, 3487 .llseek = lpfc_debugfs_lseek, 3488 .read = lpfc_debugfs_read, 3489 .release = lpfc_debugfs_release, 3490 }; 3491 3492 #undef lpfc_debugfs_op_dumpHostSlim 3493 static const struct file_operations lpfc_debugfs_op_dumpHostSlim = { 3494 .owner = THIS_MODULE, 3495 .open = lpfc_debugfs_dumpHostSlim_open, 3496 .llseek = lpfc_debugfs_lseek, 3497 .read = lpfc_debugfs_read, 3498 .release = lpfc_debugfs_release, 3499 }; 3500 3501 #undef lpfc_debugfs_op_dumpData 3502 static const struct file_operations lpfc_debugfs_op_dumpData = { 3503 .owner = THIS_MODULE, 3504 .open = lpfc_debugfs_dumpData_open, 3505 .llseek = lpfc_debugfs_lseek, 3506 .read = lpfc_debugfs_read, 3507 .write = lpfc_debugfs_dumpDataDif_write, 3508 .release = lpfc_debugfs_dumpDataDif_release, 3509 }; 3510 3511 #undef lpfc_debugfs_op_dumpDif 3512 static const struct file_operations lpfc_debugfs_op_dumpDif = { 3513 .owner = THIS_MODULE, 3514 .open = lpfc_debugfs_dumpDif_open, 3515 .llseek = lpfc_debugfs_lseek, 3516 .read = lpfc_debugfs_read, 3517 .write = lpfc_debugfs_dumpDataDif_write, 3518 .release = lpfc_debugfs_dumpDataDif_release, 3519 }; 3520 3521 #undef lpfc_debugfs_op_dif_err 3522 static const struct file_operations lpfc_debugfs_op_dif_err = { 3523 .owner = THIS_MODULE, 3524 .open = lpfc_debugfs_dif_err_open, 3525 .llseek = lpfc_debugfs_lseek, 3526 .read = lpfc_debugfs_dif_err_read, 3527 .write = lpfc_debugfs_dif_err_write, 3528 .release = lpfc_debugfs_dif_err_release, 3529 }; 3530 3531 #undef lpfc_debugfs_op_slow_ring_trc 3532 static const struct file_operations lpfc_debugfs_op_slow_ring_trc = { 3533 .owner = THIS_MODULE, 3534 .open = lpfc_debugfs_slow_ring_trc_open, 3535 .llseek = lpfc_debugfs_lseek, 3536 .read = lpfc_debugfs_read, 3537 .release = lpfc_debugfs_release, 3538 }; 3539 3540 static struct dentry *lpfc_debugfs_root = NULL; 3541 static atomic_t lpfc_debugfs_hba_count; 3542 3543 /* 3544 * File operations for the iDiag debugfs 3545 */ 3546 #undef lpfc_idiag_op_pciCfg 3547 static const struct file_operations lpfc_idiag_op_pciCfg = { 3548 .owner = THIS_MODULE, 3549 .open = lpfc_idiag_open, 3550 .llseek = lpfc_debugfs_lseek, 3551 .read = lpfc_idiag_pcicfg_read, 3552 .write = lpfc_idiag_pcicfg_write, 3553 .release = lpfc_idiag_cmd_release, 3554 }; 3555 3556 #undef lpfc_idiag_op_barAcc 3557 static const struct file_operations lpfc_idiag_op_barAcc = { 3558 .owner = THIS_MODULE, 3559 .open = lpfc_idiag_open, 3560 .llseek = lpfc_debugfs_lseek, 3561 .read = lpfc_idiag_baracc_read, 3562 .write = lpfc_idiag_baracc_write, 3563 .release = lpfc_idiag_cmd_release, 3564 }; 3565 3566 #undef lpfc_idiag_op_queInfo 3567 static const struct file_operations lpfc_idiag_op_queInfo = { 3568 .owner = THIS_MODULE, 3569 .open = lpfc_idiag_open, 3570 .read = lpfc_idiag_queinfo_read, 3571 .release = lpfc_idiag_release, 3572 }; 3573 3574 #undef lpfc_idiag_op_queAcc 3575 static const struct file_operations lpfc_idiag_op_queAcc = { 3576 .owner = THIS_MODULE, 3577 .open = lpfc_idiag_open, 3578 .llseek = lpfc_debugfs_lseek, 3579 .read = lpfc_idiag_queacc_read, 3580 .write = lpfc_idiag_queacc_write, 3581 .release = lpfc_idiag_cmd_release, 3582 }; 3583 3584 #undef lpfc_idiag_op_drbAcc 3585 static const struct file_operations lpfc_idiag_op_drbAcc = { 3586 .owner = THIS_MODULE, 3587 .open = lpfc_idiag_open, 3588 .llseek = lpfc_debugfs_lseek, 3589 .read = lpfc_idiag_drbacc_read, 3590 .write = lpfc_idiag_drbacc_write, 3591 .release = lpfc_idiag_cmd_release, 3592 }; 3593 3594 #undef lpfc_idiag_op_ctlAcc 3595 static const struct file_operations lpfc_idiag_op_ctlAcc = { 3596 .owner = THIS_MODULE, 3597 .open = lpfc_idiag_open, 3598 .llseek = lpfc_debugfs_lseek, 3599 .read = lpfc_idiag_ctlacc_read, 3600 .write = lpfc_idiag_ctlacc_write, 3601 .release = lpfc_idiag_cmd_release, 3602 }; 3603 3604 #undef lpfc_idiag_op_mbxAcc 3605 static const struct file_operations lpfc_idiag_op_mbxAcc = { 3606 .owner = THIS_MODULE, 3607 .open = lpfc_idiag_open, 3608 .llseek = lpfc_debugfs_lseek, 3609 .read = lpfc_idiag_mbxacc_read, 3610 .write = lpfc_idiag_mbxacc_write, 3611 .release = lpfc_idiag_cmd_release, 3612 }; 3613 3614 #undef lpfc_idiag_op_extAcc 3615 static const struct file_operations lpfc_idiag_op_extAcc = { 3616 .owner = THIS_MODULE, 3617 .open = lpfc_idiag_open, 3618 .llseek = lpfc_debugfs_lseek, 3619 .read = lpfc_idiag_extacc_read, 3620 .write = lpfc_idiag_extacc_write, 3621 .release = lpfc_idiag_cmd_release, 3622 }; 3623 3624 #endif 3625 3626 /* lpfc_idiag_mbxacc_dump_bsg_mbox - idiag debugfs dump bsg mailbox command 3627 * @phba: Pointer to HBA context object. 3628 * @dmabuf: Pointer to a DMA buffer descriptor. 3629 * 3630 * Description: 3631 * This routine dump a bsg pass-through non-embedded mailbox command with 3632 * external buffer. 3633 **/ 3634 void 3635 lpfc_idiag_mbxacc_dump_bsg_mbox(struct lpfc_hba *phba, enum nemb_type nemb_tp, 3636 enum mbox_type mbox_tp, enum dma_type dma_tp, 3637 enum sta_type sta_tp, 3638 struct lpfc_dmabuf *dmabuf, uint32_t ext_buf) 3639 { 3640 #ifdef CONFIG_SCSI_LPFC_DEBUG_FS 3641 uint32_t *mbx_mbox_cmd, *mbx_dump_map, *mbx_dump_cnt, *mbx_word_cnt; 3642 char line_buf[LPFC_MBX_ACC_LBUF_SZ]; 3643 int len = 0; 3644 uint32_t do_dump = 0; 3645 uint32_t *pword; 3646 uint32_t i; 3647 3648 if (idiag.cmd.opcode != LPFC_IDIAG_BSG_MBXACC_DP) 3649 return; 3650 3651 mbx_mbox_cmd = &idiag.cmd.data[IDIAG_MBXACC_MBCMD_INDX]; 3652 mbx_dump_map = &idiag.cmd.data[IDIAG_MBXACC_DPMAP_INDX]; 3653 mbx_dump_cnt = &idiag.cmd.data[IDIAG_MBXACC_DPCNT_INDX]; 3654 mbx_word_cnt = &idiag.cmd.data[IDIAG_MBXACC_WDCNT_INDX]; 3655 3656 if (!(*mbx_dump_map & LPFC_MBX_DMP_ALL) || 3657 (*mbx_dump_cnt == 0) || 3658 (*mbx_word_cnt == 0)) 3659 return; 3660 3661 if (*mbx_mbox_cmd != 0x9B) 3662 return; 3663 3664 if ((mbox_tp == mbox_rd) && (dma_tp == dma_mbox)) { 3665 if (*mbx_dump_map & LPFC_BSG_DMP_MBX_RD_MBX) { 3666 do_dump |= LPFC_BSG_DMP_MBX_RD_MBX; 3667 printk(KERN_ERR "\nRead mbox command (x%x), " 3668 "nemb:0x%x, extbuf_cnt:%d:\n", 3669 sta_tp, nemb_tp, ext_buf); 3670 } 3671 } 3672 if ((mbox_tp == mbox_rd) && (dma_tp == dma_ebuf)) { 3673 if (*mbx_dump_map & LPFC_BSG_DMP_MBX_RD_BUF) { 3674 do_dump |= LPFC_BSG_DMP_MBX_RD_BUF; 3675 printk(KERN_ERR "\nRead mbox buffer (x%x), " 3676 "nemb:0x%x, extbuf_seq:%d:\n", 3677 sta_tp, nemb_tp, ext_buf); 3678 } 3679 } 3680 if ((mbox_tp == mbox_wr) && (dma_tp == dma_mbox)) { 3681 if (*mbx_dump_map & LPFC_BSG_DMP_MBX_WR_MBX) { 3682 do_dump |= LPFC_BSG_DMP_MBX_WR_MBX; 3683 printk(KERN_ERR "\nWrite mbox command (x%x), " 3684 "nemb:0x%x, extbuf_cnt:%d:\n", 3685 sta_tp, nemb_tp, ext_buf); 3686 } 3687 } 3688 if ((mbox_tp == mbox_wr) && (dma_tp == dma_ebuf)) { 3689 if (*mbx_dump_map & LPFC_BSG_DMP_MBX_WR_BUF) { 3690 do_dump |= LPFC_BSG_DMP_MBX_WR_BUF; 3691 printk(KERN_ERR "\nWrite mbox buffer (x%x), " 3692 "nemb:0x%x, extbuf_seq:%d:\n", 3693 sta_tp, nemb_tp, ext_buf); 3694 } 3695 } 3696 3697 /* dump buffer content */ 3698 if (do_dump) { 3699 pword = (uint32_t *)dmabuf->virt; 3700 for (i = 0; i < *mbx_word_cnt; i++) { 3701 if (!(i % 8)) { 3702 if (i != 0) 3703 printk(KERN_ERR "%s\n", line_buf); 3704 len = 0; 3705 len += snprintf(line_buf+len, 3706 LPFC_MBX_ACC_LBUF_SZ-len, 3707 "%03d: ", i); 3708 } 3709 len += snprintf(line_buf+len, LPFC_MBX_ACC_LBUF_SZ-len, 3710 "%08x ", (uint32_t)*pword); 3711 pword++; 3712 } 3713 if ((i - 1) % 8) 3714 printk(KERN_ERR "%s\n", line_buf); 3715 (*mbx_dump_cnt)--; 3716 } 3717 3718 /* Clean out command structure on reaching dump count */ 3719 if (*mbx_dump_cnt == 0) 3720 memset(&idiag, 0, sizeof(idiag)); 3721 return; 3722 #endif 3723 } 3724 3725 /* lpfc_idiag_mbxacc_dump_issue_mbox - idiag debugfs dump issue mailbox command 3726 * @phba: Pointer to HBA context object. 3727 * @dmabuf: Pointer to a DMA buffer descriptor. 3728 * 3729 * Description: 3730 * This routine dump a pass-through non-embedded mailbox command from issue 3731 * mailbox command. 3732 **/ 3733 void 3734 lpfc_idiag_mbxacc_dump_issue_mbox(struct lpfc_hba *phba, MAILBOX_t *pmbox) 3735 { 3736 #ifdef CONFIG_SCSI_LPFC_DEBUG_FS 3737 uint32_t *mbx_dump_map, *mbx_dump_cnt, *mbx_word_cnt, *mbx_mbox_cmd; 3738 char line_buf[LPFC_MBX_ACC_LBUF_SZ]; 3739 int len = 0; 3740 uint32_t *pword; 3741 uint8_t *pbyte; 3742 uint32_t i, j; 3743 3744 if (idiag.cmd.opcode != LPFC_IDIAG_CMD_MBXACC_DP) 3745 return; 3746 3747 mbx_mbox_cmd = &idiag.cmd.data[IDIAG_MBXACC_MBCMD_INDX]; 3748 mbx_dump_map = &idiag.cmd.data[IDIAG_MBXACC_DPMAP_INDX]; 3749 mbx_dump_cnt = &idiag.cmd.data[IDIAG_MBXACC_DPCNT_INDX]; 3750 mbx_word_cnt = &idiag.cmd.data[IDIAG_MBXACC_WDCNT_INDX]; 3751 3752 if (!(*mbx_dump_map & LPFC_MBX_DMP_MBX_ALL) || 3753 (*mbx_dump_cnt == 0) || 3754 (*mbx_word_cnt == 0)) 3755 return; 3756 3757 if ((*mbx_mbox_cmd != LPFC_MBX_ALL_CMD) && 3758 (*mbx_mbox_cmd != pmbox->mbxCommand)) 3759 return; 3760 3761 /* dump buffer content */ 3762 if (*mbx_dump_map & LPFC_MBX_DMP_MBX_WORD) { 3763 printk(KERN_ERR "Mailbox command:0x%x dump by word:\n", 3764 pmbox->mbxCommand); 3765 pword = (uint32_t *)pmbox; 3766 for (i = 0; i < *mbx_word_cnt; i++) { 3767 if (!(i % 8)) { 3768 if (i != 0) 3769 printk(KERN_ERR "%s\n", line_buf); 3770 len = 0; 3771 memset(line_buf, 0, LPFC_MBX_ACC_LBUF_SZ); 3772 len += snprintf(line_buf+len, 3773 LPFC_MBX_ACC_LBUF_SZ-len, 3774 "%03d: ", i); 3775 } 3776 len += snprintf(line_buf+len, LPFC_MBX_ACC_LBUF_SZ-len, 3777 "%08x ", 3778 ((uint32_t)*pword) & 0xffffffff); 3779 pword++; 3780 } 3781 if ((i - 1) % 8) 3782 printk(KERN_ERR "%s\n", line_buf); 3783 printk(KERN_ERR "\n"); 3784 } 3785 if (*mbx_dump_map & LPFC_MBX_DMP_MBX_BYTE) { 3786 printk(KERN_ERR "Mailbox command:0x%x dump by byte:\n", 3787 pmbox->mbxCommand); 3788 pbyte = (uint8_t *)pmbox; 3789 for (i = 0; i < *mbx_word_cnt; i++) { 3790 if (!(i % 8)) { 3791 if (i != 0) 3792 printk(KERN_ERR "%s\n", line_buf); 3793 len = 0; 3794 memset(line_buf, 0, LPFC_MBX_ACC_LBUF_SZ); 3795 len += snprintf(line_buf+len, 3796 LPFC_MBX_ACC_LBUF_SZ-len, 3797 "%03d: ", i); 3798 } 3799 for (j = 0; j < 4; j++) { 3800 len += snprintf(line_buf+len, 3801 LPFC_MBX_ACC_LBUF_SZ-len, 3802 "%02x", 3803 ((uint8_t)*pbyte) & 0xff); 3804 pbyte++; 3805 } 3806 len += snprintf(line_buf+len, 3807 LPFC_MBX_ACC_LBUF_SZ-len, " "); 3808 } 3809 if ((i - 1) % 8) 3810 printk(KERN_ERR "%s\n", line_buf); 3811 printk(KERN_ERR "\n"); 3812 } 3813 (*mbx_dump_cnt)--; 3814 3815 /* Clean out command structure on reaching dump count */ 3816 if (*mbx_dump_cnt == 0) 3817 memset(&idiag, 0, sizeof(idiag)); 3818 return; 3819 #endif 3820 } 3821 3822 /** 3823 * lpfc_debugfs_initialize - Initialize debugfs for a vport 3824 * @vport: The vport pointer to initialize. 3825 * 3826 * Description: 3827 * When Debugfs is configured this routine sets up the lpfc debugfs file system. 3828 * If not already created, this routine will create the lpfc directory, and 3829 * lpfcX directory (for this HBA), and vportX directory for this vport. It will 3830 * also create each file used to access lpfc specific debugfs information. 3831 **/ 3832 inline void 3833 lpfc_debugfs_initialize(struct lpfc_vport *vport) 3834 { 3835 #ifdef CONFIG_SCSI_LPFC_DEBUG_FS 3836 struct lpfc_hba *phba = vport->phba; 3837 char name[64]; 3838 uint32_t num, i; 3839 3840 if (!lpfc_debugfs_enable) 3841 return; 3842 3843 /* Setup lpfc root directory */ 3844 if (!lpfc_debugfs_root) { 3845 lpfc_debugfs_root = debugfs_create_dir("lpfc", NULL); 3846 atomic_set(&lpfc_debugfs_hba_count, 0); 3847 if (!lpfc_debugfs_root) { 3848 lpfc_printf_vlog(vport, KERN_ERR, LOG_INIT, 3849 "0408 Cannot create debugfs root\n"); 3850 goto debug_failed; 3851 } 3852 } 3853 if (!lpfc_debugfs_start_time) 3854 lpfc_debugfs_start_time = jiffies; 3855 3856 /* Setup funcX directory for specific HBA PCI function */ 3857 snprintf(name, sizeof(name), "fn%d", phba->brd_no); 3858 if (!phba->hba_debugfs_root) { 3859 phba->hba_debugfs_root = 3860 debugfs_create_dir(name, lpfc_debugfs_root); 3861 if (!phba->hba_debugfs_root) { 3862 lpfc_printf_vlog(vport, KERN_ERR, LOG_INIT, 3863 "0412 Cannot create debugfs hba\n"); 3864 goto debug_failed; 3865 } 3866 atomic_inc(&lpfc_debugfs_hba_count); 3867 atomic_set(&phba->debugfs_vport_count, 0); 3868 3869 /* Setup hbqinfo */ 3870 snprintf(name, sizeof(name), "hbqinfo"); 3871 phba->debug_hbqinfo = 3872 debugfs_create_file(name, S_IFREG|S_IRUGO|S_IWUSR, 3873 phba->hba_debugfs_root, 3874 phba, &lpfc_debugfs_op_hbqinfo); 3875 if (!phba->debug_hbqinfo) { 3876 lpfc_printf_vlog(vport, KERN_ERR, LOG_INIT, 3877 "0411 Cannot create debugfs hbqinfo\n"); 3878 goto debug_failed; 3879 } 3880 3881 /* Setup dumpHBASlim */ 3882 if (phba->sli_rev < LPFC_SLI_REV4) { 3883 snprintf(name, sizeof(name), "dumpHBASlim"); 3884 phba->debug_dumpHBASlim = 3885 debugfs_create_file(name, 3886 S_IFREG|S_IRUGO|S_IWUSR, 3887 phba->hba_debugfs_root, 3888 phba, &lpfc_debugfs_op_dumpHBASlim); 3889 if (!phba->debug_dumpHBASlim) { 3890 lpfc_printf_vlog(vport, KERN_ERR, LOG_INIT, 3891 "0413 Cannot create debugfs " 3892 "dumpHBASlim\n"); 3893 goto debug_failed; 3894 } 3895 } else 3896 phba->debug_dumpHBASlim = NULL; 3897 3898 /* Setup dumpHostSlim */ 3899 if (phba->sli_rev < LPFC_SLI_REV4) { 3900 snprintf(name, sizeof(name), "dumpHostSlim"); 3901 phba->debug_dumpHostSlim = 3902 debugfs_create_file(name, 3903 S_IFREG|S_IRUGO|S_IWUSR, 3904 phba->hba_debugfs_root, 3905 phba, &lpfc_debugfs_op_dumpHostSlim); 3906 if (!phba->debug_dumpHostSlim) { 3907 lpfc_printf_vlog(vport, KERN_ERR, LOG_INIT, 3908 "0414 Cannot create debugfs " 3909 "dumpHostSlim\n"); 3910 goto debug_failed; 3911 } 3912 } else 3913 phba->debug_dumpHBASlim = NULL; 3914 3915 /* Setup dumpData */ 3916 snprintf(name, sizeof(name), "dumpData"); 3917 phba->debug_dumpData = 3918 debugfs_create_file(name, S_IFREG|S_IRUGO|S_IWUSR, 3919 phba->hba_debugfs_root, 3920 phba, &lpfc_debugfs_op_dumpData); 3921 if (!phba->debug_dumpData) { 3922 lpfc_printf_vlog(vport, KERN_ERR, LOG_INIT, 3923 "0800 Cannot create debugfs dumpData\n"); 3924 goto debug_failed; 3925 } 3926 3927 /* Setup dumpDif */ 3928 snprintf(name, sizeof(name), "dumpDif"); 3929 phba->debug_dumpDif = 3930 debugfs_create_file(name, S_IFREG|S_IRUGO|S_IWUSR, 3931 phba->hba_debugfs_root, 3932 phba, &lpfc_debugfs_op_dumpDif); 3933 if (!phba->debug_dumpDif) { 3934 lpfc_printf_vlog(vport, KERN_ERR, LOG_INIT, 3935 "0801 Cannot create debugfs dumpDif\n"); 3936 goto debug_failed; 3937 } 3938 3939 /* Setup DIF Error Injections */ 3940 snprintf(name, sizeof(name), "InjErrLBA"); 3941 phba->debug_InjErrLBA = 3942 debugfs_create_file(name, S_IFREG|S_IRUGO|S_IWUSR, 3943 phba->hba_debugfs_root, 3944 phba, &lpfc_debugfs_op_dif_err); 3945 if (!phba->debug_InjErrLBA) { 3946 lpfc_printf_vlog(vport, KERN_ERR, LOG_INIT, 3947 "0807 Cannot create debugfs InjErrLBA\n"); 3948 goto debug_failed; 3949 } 3950 phba->lpfc_injerr_lba = LPFC_INJERR_LBA_OFF; 3951 3952 snprintf(name, sizeof(name), "writeGuardInjErr"); 3953 phba->debug_writeGuard = 3954 debugfs_create_file(name, S_IFREG|S_IRUGO|S_IWUSR, 3955 phba->hba_debugfs_root, 3956 phba, &lpfc_debugfs_op_dif_err); 3957 if (!phba->debug_writeGuard) { 3958 lpfc_printf_vlog(vport, KERN_ERR, LOG_INIT, 3959 "0802 Cannot create debugfs writeGuard\n"); 3960 goto debug_failed; 3961 } 3962 3963 snprintf(name, sizeof(name), "writeAppInjErr"); 3964 phba->debug_writeApp = 3965 debugfs_create_file(name, S_IFREG|S_IRUGO|S_IWUSR, 3966 phba->hba_debugfs_root, 3967 phba, &lpfc_debugfs_op_dif_err); 3968 if (!phba->debug_writeApp) { 3969 lpfc_printf_vlog(vport, KERN_ERR, LOG_INIT, 3970 "0803 Cannot create debugfs writeApp\n"); 3971 goto debug_failed; 3972 } 3973 3974 snprintf(name, sizeof(name), "writeRefInjErr"); 3975 phba->debug_writeRef = 3976 debugfs_create_file(name, S_IFREG|S_IRUGO|S_IWUSR, 3977 phba->hba_debugfs_root, 3978 phba, &lpfc_debugfs_op_dif_err); 3979 if (!phba->debug_writeRef) { 3980 lpfc_printf_vlog(vport, KERN_ERR, LOG_INIT, 3981 "0804 Cannot create debugfs writeRef\n"); 3982 goto debug_failed; 3983 } 3984 3985 snprintf(name, sizeof(name), "readGuardInjErr"); 3986 phba->debug_readGuard = 3987 debugfs_create_file(name, S_IFREG|S_IRUGO|S_IWUSR, 3988 phba->hba_debugfs_root, 3989 phba, &lpfc_debugfs_op_dif_err); 3990 if (!phba->debug_readGuard) { 3991 lpfc_printf_vlog(vport, KERN_ERR, LOG_INIT, 3992 "0808 Cannot create debugfs readGuard\n"); 3993 goto debug_failed; 3994 } 3995 3996 snprintf(name, sizeof(name), "readAppInjErr"); 3997 phba->debug_readApp = 3998 debugfs_create_file(name, S_IFREG|S_IRUGO|S_IWUSR, 3999 phba->hba_debugfs_root, 4000 phba, &lpfc_debugfs_op_dif_err); 4001 if (!phba->debug_readApp) { 4002 lpfc_printf_vlog(vport, KERN_ERR, LOG_INIT, 4003 "0805 Cannot create debugfs readApp\n"); 4004 goto debug_failed; 4005 } 4006 4007 snprintf(name, sizeof(name), "readRefInjErr"); 4008 phba->debug_readRef = 4009 debugfs_create_file(name, S_IFREG|S_IRUGO|S_IWUSR, 4010 phba->hba_debugfs_root, 4011 phba, &lpfc_debugfs_op_dif_err); 4012 if (!phba->debug_readRef) { 4013 lpfc_printf_vlog(vport, KERN_ERR, LOG_INIT, 4014 "0806 Cannot create debugfs readApp\n"); 4015 goto debug_failed; 4016 } 4017 4018 /* Setup slow ring trace */ 4019 if (lpfc_debugfs_max_slow_ring_trc) { 4020 num = lpfc_debugfs_max_slow_ring_trc - 1; 4021 if (num & lpfc_debugfs_max_slow_ring_trc) { 4022 /* Change to be a power of 2 */ 4023 num = lpfc_debugfs_max_slow_ring_trc; 4024 i = 0; 4025 while (num > 1) { 4026 num = num >> 1; 4027 i++; 4028 } 4029 lpfc_debugfs_max_slow_ring_trc = (1 << i); 4030 printk(KERN_ERR 4031 "lpfc_debugfs_max_disc_trc changed to " 4032 "%d\n", lpfc_debugfs_max_disc_trc); 4033 } 4034 } 4035 4036 snprintf(name, sizeof(name), "slow_ring_trace"); 4037 phba->debug_slow_ring_trc = 4038 debugfs_create_file(name, S_IFREG|S_IRUGO|S_IWUSR, 4039 phba->hba_debugfs_root, 4040 phba, &lpfc_debugfs_op_slow_ring_trc); 4041 if (!phba->debug_slow_ring_trc) { 4042 lpfc_printf_vlog(vport, KERN_ERR, LOG_INIT, 4043 "0415 Cannot create debugfs " 4044 "slow_ring_trace\n"); 4045 goto debug_failed; 4046 } 4047 if (!phba->slow_ring_trc) { 4048 phba->slow_ring_trc = kmalloc( 4049 (sizeof(struct lpfc_debugfs_trc) * 4050 lpfc_debugfs_max_slow_ring_trc), 4051 GFP_KERNEL); 4052 if (!phba->slow_ring_trc) { 4053 lpfc_printf_vlog(vport, KERN_ERR, LOG_INIT, 4054 "0416 Cannot create debugfs " 4055 "slow_ring buffer\n"); 4056 goto debug_failed; 4057 } 4058 atomic_set(&phba->slow_ring_trc_cnt, 0); 4059 memset(phba->slow_ring_trc, 0, 4060 (sizeof(struct lpfc_debugfs_trc) * 4061 lpfc_debugfs_max_slow_ring_trc)); 4062 } 4063 } 4064 4065 snprintf(name, sizeof(name), "vport%d", vport->vpi); 4066 if (!vport->vport_debugfs_root) { 4067 vport->vport_debugfs_root = 4068 debugfs_create_dir(name, phba->hba_debugfs_root); 4069 if (!vport->vport_debugfs_root) { 4070 lpfc_printf_vlog(vport, KERN_ERR, LOG_INIT, 4071 "0417 Can't create debugfs\n"); 4072 goto debug_failed; 4073 } 4074 atomic_inc(&phba->debugfs_vport_count); 4075 } 4076 4077 if (lpfc_debugfs_max_disc_trc) { 4078 num = lpfc_debugfs_max_disc_trc - 1; 4079 if (num & lpfc_debugfs_max_disc_trc) { 4080 /* Change to be a power of 2 */ 4081 num = lpfc_debugfs_max_disc_trc; 4082 i = 0; 4083 while (num > 1) { 4084 num = num >> 1; 4085 i++; 4086 } 4087 lpfc_debugfs_max_disc_trc = (1 << i); 4088 printk(KERN_ERR 4089 "lpfc_debugfs_max_disc_trc changed to %d\n", 4090 lpfc_debugfs_max_disc_trc); 4091 } 4092 } 4093 4094 vport->disc_trc = kzalloc( 4095 (sizeof(struct lpfc_debugfs_trc) * lpfc_debugfs_max_disc_trc), 4096 GFP_KERNEL); 4097 4098 if (!vport->disc_trc) { 4099 lpfc_printf_vlog(vport, KERN_ERR, LOG_INIT, 4100 "0418 Cannot create debugfs disc trace " 4101 "buffer\n"); 4102 goto debug_failed; 4103 } 4104 atomic_set(&vport->disc_trc_cnt, 0); 4105 4106 snprintf(name, sizeof(name), "discovery_trace"); 4107 vport->debug_disc_trc = 4108 debugfs_create_file(name, S_IFREG|S_IRUGO|S_IWUSR, 4109 vport->vport_debugfs_root, 4110 vport, &lpfc_debugfs_op_disc_trc); 4111 if (!vport->debug_disc_trc) { 4112 lpfc_printf_vlog(vport, KERN_ERR, LOG_INIT, 4113 "0419 Cannot create debugfs " 4114 "discovery_trace\n"); 4115 goto debug_failed; 4116 } 4117 snprintf(name, sizeof(name), "nodelist"); 4118 vport->debug_nodelist = 4119 debugfs_create_file(name, S_IFREG|S_IRUGO|S_IWUSR, 4120 vport->vport_debugfs_root, 4121 vport, &lpfc_debugfs_op_nodelist); 4122 if (!vport->debug_nodelist) { 4123 lpfc_printf_vlog(vport, KERN_ERR, LOG_INIT, 4124 "2985 Can't create debugfs nodelist\n"); 4125 goto debug_failed; 4126 } 4127 4128 /* 4129 * iDiag debugfs root entry points for SLI4 device only 4130 */ 4131 if (phba->sli_rev < LPFC_SLI_REV4) 4132 goto debug_failed; 4133 4134 snprintf(name, sizeof(name), "iDiag"); 4135 if (!phba->idiag_root) { 4136 phba->idiag_root = 4137 debugfs_create_dir(name, phba->hba_debugfs_root); 4138 if (!phba->idiag_root) { 4139 lpfc_printf_vlog(vport, KERN_ERR, LOG_INIT, 4140 "2922 Can't create idiag debugfs\n"); 4141 goto debug_failed; 4142 } 4143 /* Initialize iDiag data structure */ 4144 memset(&idiag, 0, sizeof(idiag)); 4145 } 4146 4147 /* iDiag read PCI config space */ 4148 snprintf(name, sizeof(name), "pciCfg"); 4149 if (!phba->idiag_pci_cfg) { 4150 phba->idiag_pci_cfg = 4151 debugfs_create_file(name, S_IFREG|S_IRUGO|S_IWUSR, 4152 phba->idiag_root, phba, &lpfc_idiag_op_pciCfg); 4153 if (!phba->idiag_pci_cfg) { 4154 lpfc_printf_vlog(vport, KERN_ERR, LOG_INIT, 4155 "2923 Can't create idiag debugfs\n"); 4156 goto debug_failed; 4157 } 4158 idiag.offset.last_rd = 0; 4159 } 4160 4161 /* iDiag PCI BAR access */ 4162 snprintf(name, sizeof(name), "barAcc"); 4163 if (!phba->idiag_bar_acc) { 4164 phba->idiag_bar_acc = 4165 debugfs_create_file(name, S_IFREG|S_IRUGO|S_IWUSR, 4166 phba->idiag_root, phba, &lpfc_idiag_op_barAcc); 4167 if (!phba->idiag_bar_acc) { 4168 lpfc_printf_vlog(vport, KERN_ERR, LOG_INIT, 4169 "3056 Can't create idiag debugfs\n"); 4170 goto debug_failed; 4171 } 4172 idiag.offset.last_rd = 0; 4173 } 4174 4175 /* iDiag get PCI function queue information */ 4176 snprintf(name, sizeof(name), "queInfo"); 4177 if (!phba->idiag_que_info) { 4178 phba->idiag_que_info = 4179 debugfs_create_file(name, S_IFREG|S_IRUGO, 4180 phba->idiag_root, phba, &lpfc_idiag_op_queInfo); 4181 if (!phba->idiag_que_info) { 4182 lpfc_printf_vlog(vport, KERN_ERR, LOG_INIT, 4183 "2924 Can't create idiag debugfs\n"); 4184 goto debug_failed; 4185 } 4186 } 4187 4188 /* iDiag access PCI function queue */ 4189 snprintf(name, sizeof(name), "queAcc"); 4190 if (!phba->idiag_que_acc) { 4191 phba->idiag_que_acc = 4192 debugfs_create_file(name, S_IFREG|S_IRUGO|S_IWUSR, 4193 phba->idiag_root, phba, &lpfc_idiag_op_queAcc); 4194 if (!phba->idiag_que_acc) { 4195 lpfc_printf_vlog(vport, KERN_ERR, LOG_INIT, 4196 "2926 Can't create idiag debugfs\n"); 4197 goto debug_failed; 4198 } 4199 } 4200 4201 /* iDiag access PCI function doorbell registers */ 4202 snprintf(name, sizeof(name), "drbAcc"); 4203 if (!phba->idiag_drb_acc) { 4204 phba->idiag_drb_acc = 4205 debugfs_create_file(name, S_IFREG|S_IRUGO|S_IWUSR, 4206 phba->idiag_root, phba, &lpfc_idiag_op_drbAcc); 4207 if (!phba->idiag_drb_acc) { 4208 lpfc_printf_vlog(vport, KERN_ERR, LOG_INIT, 4209 "2927 Can't create idiag debugfs\n"); 4210 goto debug_failed; 4211 } 4212 } 4213 4214 /* iDiag access PCI function control registers */ 4215 snprintf(name, sizeof(name), "ctlAcc"); 4216 if (!phba->idiag_ctl_acc) { 4217 phba->idiag_ctl_acc = 4218 debugfs_create_file(name, S_IFREG|S_IRUGO|S_IWUSR, 4219 phba->idiag_root, phba, &lpfc_idiag_op_ctlAcc); 4220 if (!phba->idiag_ctl_acc) { 4221 lpfc_printf_vlog(vport, KERN_ERR, LOG_INIT, 4222 "2981 Can't create idiag debugfs\n"); 4223 goto debug_failed; 4224 } 4225 } 4226 4227 /* iDiag access mbox commands */ 4228 snprintf(name, sizeof(name), "mbxAcc"); 4229 if (!phba->idiag_mbx_acc) { 4230 phba->idiag_mbx_acc = 4231 debugfs_create_file(name, S_IFREG|S_IRUGO|S_IWUSR, 4232 phba->idiag_root, phba, &lpfc_idiag_op_mbxAcc); 4233 if (!phba->idiag_mbx_acc) { 4234 lpfc_printf_vlog(vport, KERN_ERR, LOG_INIT, 4235 "2980 Can't create idiag debugfs\n"); 4236 goto debug_failed; 4237 } 4238 } 4239 4240 /* iDiag extents access commands */ 4241 if (phba->sli4_hba.extents_in_use) { 4242 snprintf(name, sizeof(name), "extAcc"); 4243 if (!phba->idiag_ext_acc) { 4244 phba->idiag_ext_acc = 4245 debugfs_create_file(name, 4246 S_IFREG|S_IRUGO|S_IWUSR, 4247 phba->idiag_root, phba, 4248 &lpfc_idiag_op_extAcc); 4249 if (!phba->idiag_ext_acc) { 4250 lpfc_printf_vlog(vport, KERN_ERR, LOG_INIT, 4251 "2986 Cant create " 4252 "idiag debugfs\n"); 4253 goto debug_failed; 4254 } 4255 } 4256 } 4257 4258 debug_failed: 4259 return; 4260 #endif 4261 } 4262 4263 /** 4264 * lpfc_debugfs_terminate - Tear down debugfs infrastructure for this vport 4265 * @vport: The vport pointer to remove from debugfs. 4266 * 4267 * Description: 4268 * When Debugfs is configured this routine removes debugfs file system elements 4269 * that are specific to this vport. It also checks to see if there are any 4270 * users left for the debugfs directories associated with the HBA and driver. If 4271 * this is the last user of the HBA directory or driver directory then it will 4272 * remove those from the debugfs infrastructure as well. 4273 **/ 4274 inline void 4275 lpfc_debugfs_terminate(struct lpfc_vport *vport) 4276 { 4277 #ifdef CONFIG_SCSI_LPFC_DEBUG_FS 4278 struct lpfc_hba *phba = vport->phba; 4279 4280 if (vport->disc_trc) { 4281 kfree(vport->disc_trc); 4282 vport->disc_trc = NULL; 4283 } 4284 if (vport->debug_disc_trc) { 4285 debugfs_remove(vport->debug_disc_trc); /* discovery_trace */ 4286 vport->debug_disc_trc = NULL; 4287 } 4288 if (vport->debug_nodelist) { 4289 debugfs_remove(vport->debug_nodelist); /* nodelist */ 4290 vport->debug_nodelist = NULL; 4291 } 4292 if (vport->vport_debugfs_root) { 4293 debugfs_remove(vport->vport_debugfs_root); /* vportX */ 4294 vport->vport_debugfs_root = NULL; 4295 atomic_dec(&phba->debugfs_vport_count); 4296 } 4297 if (atomic_read(&phba->debugfs_vport_count) == 0) { 4298 4299 if (phba->debug_hbqinfo) { 4300 debugfs_remove(phba->debug_hbqinfo); /* hbqinfo */ 4301 phba->debug_hbqinfo = NULL; 4302 } 4303 if (phba->debug_dumpHBASlim) { 4304 debugfs_remove(phba->debug_dumpHBASlim); /* HBASlim */ 4305 phba->debug_dumpHBASlim = NULL; 4306 } 4307 if (phba->debug_dumpHostSlim) { 4308 debugfs_remove(phba->debug_dumpHostSlim); /* HostSlim */ 4309 phba->debug_dumpHostSlim = NULL; 4310 } 4311 if (phba->debug_dumpData) { 4312 debugfs_remove(phba->debug_dumpData); /* dumpData */ 4313 phba->debug_dumpData = NULL; 4314 } 4315 4316 if (phba->debug_dumpDif) { 4317 debugfs_remove(phba->debug_dumpDif); /* dumpDif */ 4318 phba->debug_dumpDif = NULL; 4319 } 4320 if (phba->debug_InjErrLBA) { 4321 debugfs_remove(phba->debug_InjErrLBA); /* InjErrLBA */ 4322 phba->debug_InjErrLBA = NULL; 4323 } 4324 if (phba->debug_writeGuard) { 4325 debugfs_remove(phba->debug_writeGuard); /* writeGuard */ 4326 phba->debug_writeGuard = NULL; 4327 } 4328 if (phba->debug_writeApp) { 4329 debugfs_remove(phba->debug_writeApp); /* writeApp */ 4330 phba->debug_writeApp = NULL; 4331 } 4332 if (phba->debug_writeRef) { 4333 debugfs_remove(phba->debug_writeRef); /* writeRef */ 4334 phba->debug_writeRef = NULL; 4335 } 4336 if (phba->debug_readGuard) { 4337 debugfs_remove(phba->debug_readGuard); /* readGuard */ 4338 phba->debug_readGuard = NULL; 4339 } 4340 if (phba->debug_readApp) { 4341 debugfs_remove(phba->debug_readApp); /* readApp */ 4342 phba->debug_readApp = NULL; 4343 } 4344 if (phba->debug_readRef) { 4345 debugfs_remove(phba->debug_readRef); /* readRef */ 4346 phba->debug_readRef = NULL; 4347 } 4348 4349 if (phba->slow_ring_trc) { 4350 kfree(phba->slow_ring_trc); 4351 phba->slow_ring_trc = NULL; 4352 } 4353 if (phba->debug_slow_ring_trc) { 4354 /* slow_ring_trace */ 4355 debugfs_remove(phba->debug_slow_ring_trc); 4356 phba->debug_slow_ring_trc = NULL; 4357 } 4358 4359 /* 4360 * iDiag release 4361 */ 4362 if (phba->sli_rev == LPFC_SLI_REV4) { 4363 if (phba->idiag_ext_acc) { 4364 /* iDiag extAcc */ 4365 debugfs_remove(phba->idiag_ext_acc); 4366 phba->idiag_ext_acc = NULL; 4367 } 4368 if (phba->idiag_mbx_acc) { 4369 /* iDiag mbxAcc */ 4370 debugfs_remove(phba->idiag_mbx_acc); 4371 phba->idiag_mbx_acc = NULL; 4372 } 4373 if (phba->idiag_ctl_acc) { 4374 /* iDiag ctlAcc */ 4375 debugfs_remove(phba->idiag_ctl_acc); 4376 phba->idiag_ctl_acc = NULL; 4377 } 4378 if (phba->idiag_drb_acc) { 4379 /* iDiag drbAcc */ 4380 debugfs_remove(phba->idiag_drb_acc); 4381 phba->idiag_drb_acc = NULL; 4382 } 4383 if (phba->idiag_que_acc) { 4384 /* iDiag queAcc */ 4385 debugfs_remove(phba->idiag_que_acc); 4386 phba->idiag_que_acc = NULL; 4387 } 4388 if (phba->idiag_que_info) { 4389 /* iDiag queInfo */ 4390 debugfs_remove(phba->idiag_que_info); 4391 phba->idiag_que_info = NULL; 4392 } 4393 if (phba->idiag_bar_acc) { 4394 /* iDiag barAcc */ 4395 debugfs_remove(phba->idiag_bar_acc); 4396 phba->idiag_bar_acc = NULL; 4397 } 4398 if (phba->idiag_pci_cfg) { 4399 /* iDiag pciCfg */ 4400 debugfs_remove(phba->idiag_pci_cfg); 4401 phba->idiag_pci_cfg = NULL; 4402 } 4403 4404 /* Finally remove the iDiag debugfs root */ 4405 if (phba->idiag_root) { 4406 /* iDiag root */ 4407 debugfs_remove(phba->idiag_root); 4408 phba->idiag_root = NULL; 4409 } 4410 } 4411 4412 if (phba->hba_debugfs_root) { 4413 debugfs_remove(phba->hba_debugfs_root); /* fnX */ 4414 phba->hba_debugfs_root = NULL; 4415 atomic_dec(&lpfc_debugfs_hba_count); 4416 } 4417 4418 if (atomic_read(&lpfc_debugfs_hba_count) == 0) { 4419 debugfs_remove(lpfc_debugfs_root); /* lpfc */ 4420 lpfc_debugfs_root = NULL; 4421 } 4422 } 4423 #endif 4424 return; 4425 } 4426