1 /******************************************************************* 2 * This file is part of the Emulex Linux Device Driver for * 3 * Fibre Channel Host Bus Adapters. * 4 * Copyright (C) 2017-2019 Broadcom. All Rights Reserved. The term * 5 * “Broadcom” refers to Broadcom Inc. and/or its subsidiaries. * 6 * Copyright (C) 2004-2016 Emulex. All rights reserved. * 7 * EMULEX and SLI are trademarks of Emulex. * 8 * www.broadcom.com * 9 * Portions Copyright (C) 2004-2005 Christoph Hellwig * 10 * * 11 * This program is free software; you can redistribute it and/or * 12 * modify it under the terms of version 2 of the GNU General * 13 * Public License as published by the Free Software Foundation. * 14 * This program is distributed in the hope that it will be useful. * 15 * ALL EXPRESS OR IMPLIED CONDITIONS, REPRESENTATIONS AND * 16 * WARRANTIES, INCLUDING ANY IMPLIED WARRANTY OF MERCHANTABILITY, * 17 * FITNESS FOR A PARTICULAR PURPOSE, OR NON-INFRINGEMENT, ARE * 18 * DISCLAIMED, EXCEPT TO THE EXTENT THAT SUCH DISCLAIMERS ARE HELD * 19 * TO BE LEGALLY INVALID. See the GNU General Public License for * 20 * more details, a copy of which can be found in the file COPYING * 21 * included with this package. * 22 *******************************************************************/ 23 #include <linux/pci.h> 24 #include <linux/slab.h> 25 #include <linux/interrupt.h> 26 #include <linux/export.h> 27 #include <linux/delay.h> 28 #include <asm/unaligned.h> 29 #include <linux/t10-pi.h> 30 #include <linux/crc-t10dif.h> 31 #include <net/checksum.h> 32 33 #include <scsi/scsi.h> 34 #include <scsi/scsi_device.h> 35 #include <scsi/scsi_eh.h> 36 #include <scsi/scsi_host.h> 37 #include <scsi/scsi_tcq.h> 38 #include <scsi/scsi_transport_fc.h> 39 40 #include "lpfc_version.h" 41 #include "lpfc_hw4.h" 42 #include "lpfc_hw.h" 43 #include "lpfc_sli.h" 44 #include "lpfc_sli4.h" 45 #include "lpfc_nl.h" 46 #include "lpfc_disc.h" 47 #include "lpfc.h" 48 #include "lpfc_scsi.h" 49 #include "lpfc_logmsg.h" 50 #include "lpfc_crtn.h" 51 #include "lpfc_vport.h" 52 53 #define LPFC_RESET_WAIT 2 54 #define LPFC_ABORT_WAIT 2 55 56 int _dump_buf_done = 1; 57 58 static char *dif_op_str[] = { 59 "PROT_NORMAL", 60 "PROT_READ_INSERT", 61 "PROT_WRITE_STRIP", 62 "PROT_READ_STRIP", 63 "PROT_WRITE_INSERT", 64 "PROT_READ_PASS", 65 "PROT_WRITE_PASS", 66 }; 67 68 struct scsi_dif_tuple { 69 __be16 guard_tag; /* Checksum */ 70 __be16 app_tag; /* Opaque storage */ 71 __be32 ref_tag; /* Target LBA or indirect LBA */ 72 }; 73 74 static struct lpfc_rport_data * 75 lpfc_rport_data_from_scsi_device(struct scsi_device *sdev) 76 { 77 struct lpfc_vport *vport = (struct lpfc_vport *)sdev->host->hostdata; 78 79 if (vport->phba->cfg_fof) 80 return ((struct lpfc_device_data *)sdev->hostdata)->rport_data; 81 else 82 return (struct lpfc_rport_data *)sdev->hostdata; 83 } 84 85 static void 86 lpfc_release_scsi_buf_s4(struct lpfc_hba *phba, struct lpfc_io_buf *psb); 87 static void 88 lpfc_release_scsi_buf_s3(struct lpfc_hba *phba, struct lpfc_io_buf *psb); 89 static int 90 lpfc_prot_group_type(struct lpfc_hba *phba, struct scsi_cmnd *sc); 91 92 static void 93 lpfc_debug_save_data(struct lpfc_hba *phba, struct scsi_cmnd *cmnd) 94 { 95 void *src, *dst; 96 struct scatterlist *sgde = scsi_sglist(cmnd); 97 98 if (!_dump_buf_data) { 99 lpfc_printf_log(phba, KERN_ERR, LOG_BG, 100 "9050 BLKGRD: ERROR %s _dump_buf_data is NULL\n", 101 __func__); 102 return; 103 } 104 105 106 if (!sgde) { 107 lpfc_printf_log(phba, KERN_ERR, LOG_BG, 108 "9051 BLKGRD: ERROR: data scatterlist is null\n"); 109 return; 110 } 111 112 dst = (void *) _dump_buf_data; 113 while (sgde) { 114 src = sg_virt(sgde); 115 memcpy(dst, src, sgde->length); 116 dst += sgde->length; 117 sgde = sg_next(sgde); 118 } 119 } 120 121 static void 122 lpfc_debug_save_dif(struct lpfc_hba *phba, struct scsi_cmnd *cmnd) 123 { 124 void *src, *dst; 125 struct scatterlist *sgde = scsi_prot_sglist(cmnd); 126 127 if (!_dump_buf_dif) { 128 lpfc_printf_log(phba, KERN_ERR, LOG_BG, 129 "9052 BLKGRD: ERROR %s _dump_buf_data is NULL\n", 130 __func__); 131 return; 132 } 133 134 if (!sgde) { 135 lpfc_printf_log(phba, KERN_ERR, LOG_BG, 136 "9053 BLKGRD: ERROR: prot scatterlist is null\n"); 137 return; 138 } 139 140 dst = _dump_buf_dif; 141 while (sgde) { 142 src = sg_virt(sgde); 143 memcpy(dst, src, sgde->length); 144 dst += sgde->length; 145 sgde = sg_next(sgde); 146 } 147 } 148 149 static inline unsigned 150 lpfc_cmd_blksize(struct scsi_cmnd *sc) 151 { 152 return sc->device->sector_size; 153 } 154 155 #define LPFC_CHECK_PROTECT_GUARD 1 156 #define LPFC_CHECK_PROTECT_REF 2 157 static inline unsigned 158 lpfc_cmd_protect(struct scsi_cmnd *sc, int flag) 159 { 160 return 1; 161 } 162 163 static inline unsigned 164 lpfc_cmd_guard_csum(struct scsi_cmnd *sc) 165 { 166 if (lpfc_prot_group_type(NULL, sc) == LPFC_PG_TYPE_NO_DIF) 167 return 0; 168 if (scsi_host_get_guard(sc->device->host) == SHOST_DIX_GUARD_IP) 169 return 1; 170 return 0; 171 } 172 173 /** 174 * lpfc_sli4_set_rsp_sgl_last - Set the last bit in the response sge. 175 * @phba: Pointer to HBA object. 176 * @lpfc_cmd: lpfc scsi command object pointer. 177 * 178 * This function is called from the lpfc_prep_task_mgmt_cmd function to 179 * set the last bit in the response sge entry. 180 **/ 181 static void 182 lpfc_sli4_set_rsp_sgl_last(struct lpfc_hba *phba, 183 struct lpfc_io_buf *lpfc_cmd) 184 { 185 struct sli4_sge *sgl = (struct sli4_sge *)lpfc_cmd->dma_sgl; 186 if (sgl) { 187 sgl += 1; 188 sgl->word2 = le32_to_cpu(sgl->word2); 189 bf_set(lpfc_sli4_sge_last, sgl, 1); 190 sgl->word2 = cpu_to_le32(sgl->word2); 191 } 192 } 193 194 /** 195 * lpfc_update_stats - Update statistical data for the command completion 196 * @phba: Pointer to HBA object. 197 * @lpfc_cmd: lpfc scsi command object pointer. 198 * 199 * This function is called when there is a command completion and this 200 * function updates the statistical data for the command completion. 201 **/ 202 static void 203 lpfc_update_stats(struct lpfc_hba *phba, struct lpfc_io_buf *lpfc_cmd) 204 { 205 struct lpfc_rport_data *rdata; 206 struct lpfc_nodelist *pnode; 207 struct scsi_cmnd *cmd = lpfc_cmd->pCmd; 208 unsigned long flags; 209 struct Scsi_Host *shost = cmd->device->host; 210 struct lpfc_vport *vport = (struct lpfc_vport *) shost->hostdata; 211 unsigned long latency; 212 int i; 213 214 if (!vport->stat_data_enabled || 215 vport->stat_data_blocked || 216 (cmd->result)) 217 return; 218 219 latency = jiffies_to_msecs((long)jiffies - (long)lpfc_cmd->start_time); 220 rdata = lpfc_cmd->rdata; 221 pnode = rdata->pnode; 222 223 spin_lock_irqsave(shost->host_lock, flags); 224 if (!pnode || 225 !pnode->lat_data || 226 (phba->bucket_type == LPFC_NO_BUCKET)) { 227 spin_unlock_irqrestore(shost->host_lock, flags); 228 return; 229 } 230 231 if (phba->bucket_type == LPFC_LINEAR_BUCKET) { 232 i = (latency + phba->bucket_step - 1 - phba->bucket_base)/ 233 phba->bucket_step; 234 /* check array subscript bounds */ 235 if (i < 0) 236 i = 0; 237 else if (i >= LPFC_MAX_BUCKET_COUNT) 238 i = LPFC_MAX_BUCKET_COUNT - 1; 239 } else { 240 for (i = 0; i < LPFC_MAX_BUCKET_COUNT-1; i++) 241 if (latency <= (phba->bucket_base + 242 ((1<<i)*phba->bucket_step))) 243 break; 244 } 245 246 pnode->lat_data[i].cmd_count++; 247 spin_unlock_irqrestore(shost->host_lock, flags); 248 } 249 250 /** 251 * lpfc_rampdown_queue_depth - Post RAMP_DOWN_QUEUE event to worker thread 252 * @phba: The Hba for which this call is being executed. 253 * 254 * This routine is called when there is resource error in driver or firmware. 255 * This routine posts WORKER_RAMP_DOWN_QUEUE event for @phba. This routine 256 * posts at most 1 event each second. This routine wakes up worker thread of 257 * @phba to process WORKER_RAM_DOWN_EVENT event. 258 * 259 * This routine should be called with no lock held. 260 **/ 261 void 262 lpfc_rampdown_queue_depth(struct lpfc_hba *phba) 263 { 264 unsigned long flags; 265 uint32_t evt_posted; 266 unsigned long expires; 267 268 spin_lock_irqsave(&phba->hbalock, flags); 269 atomic_inc(&phba->num_rsrc_err); 270 phba->last_rsrc_error_time = jiffies; 271 272 expires = phba->last_ramp_down_time + QUEUE_RAMP_DOWN_INTERVAL; 273 if (time_after(expires, jiffies)) { 274 spin_unlock_irqrestore(&phba->hbalock, flags); 275 return; 276 } 277 278 phba->last_ramp_down_time = jiffies; 279 280 spin_unlock_irqrestore(&phba->hbalock, flags); 281 282 spin_lock_irqsave(&phba->pport->work_port_lock, flags); 283 evt_posted = phba->pport->work_port_events & WORKER_RAMP_DOWN_QUEUE; 284 if (!evt_posted) 285 phba->pport->work_port_events |= WORKER_RAMP_DOWN_QUEUE; 286 spin_unlock_irqrestore(&phba->pport->work_port_lock, flags); 287 288 if (!evt_posted) 289 lpfc_worker_wake_up(phba); 290 return; 291 } 292 293 /** 294 * lpfc_ramp_down_queue_handler - WORKER_RAMP_DOWN_QUEUE event handler 295 * @phba: The Hba for which this call is being executed. 296 * 297 * This routine is called to process WORKER_RAMP_DOWN_QUEUE event for worker 298 * thread.This routine reduces queue depth for all scsi device on each vport 299 * associated with @phba. 300 **/ 301 void 302 lpfc_ramp_down_queue_handler(struct lpfc_hba *phba) 303 { 304 struct lpfc_vport **vports; 305 struct Scsi_Host *shost; 306 struct scsi_device *sdev; 307 unsigned long new_queue_depth; 308 unsigned long num_rsrc_err, num_cmd_success; 309 int i; 310 311 num_rsrc_err = atomic_read(&phba->num_rsrc_err); 312 num_cmd_success = atomic_read(&phba->num_cmd_success); 313 314 /* 315 * The error and success command counters are global per 316 * driver instance. If another handler has already 317 * operated on this error event, just exit. 318 */ 319 if (num_rsrc_err == 0) 320 return; 321 322 vports = lpfc_create_vport_work_array(phba); 323 if (vports != NULL) 324 for (i = 0; i <= phba->max_vports && vports[i] != NULL; i++) { 325 shost = lpfc_shost_from_vport(vports[i]); 326 shost_for_each_device(sdev, shost) { 327 new_queue_depth = 328 sdev->queue_depth * num_rsrc_err / 329 (num_rsrc_err + num_cmd_success); 330 if (!new_queue_depth) 331 new_queue_depth = sdev->queue_depth - 1; 332 else 333 new_queue_depth = sdev->queue_depth - 334 new_queue_depth; 335 scsi_change_queue_depth(sdev, new_queue_depth); 336 } 337 } 338 lpfc_destroy_vport_work_array(phba, vports); 339 atomic_set(&phba->num_rsrc_err, 0); 340 atomic_set(&phba->num_cmd_success, 0); 341 } 342 343 /** 344 * lpfc_scsi_dev_block - set all scsi hosts to block state 345 * @phba: Pointer to HBA context object. 346 * 347 * This function walks vport list and set each SCSI host to block state 348 * by invoking fc_remote_port_delete() routine. This function is invoked 349 * with EEH when device's PCI slot has been permanently disabled. 350 **/ 351 void 352 lpfc_scsi_dev_block(struct lpfc_hba *phba) 353 { 354 struct lpfc_vport **vports; 355 struct Scsi_Host *shost; 356 struct scsi_device *sdev; 357 struct fc_rport *rport; 358 int i; 359 360 vports = lpfc_create_vport_work_array(phba); 361 if (vports != NULL) 362 for (i = 0; i <= phba->max_vports && vports[i] != NULL; i++) { 363 shost = lpfc_shost_from_vport(vports[i]); 364 shost_for_each_device(sdev, shost) { 365 rport = starget_to_rport(scsi_target(sdev)); 366 fc_remote_port_delete(rport); 367 } 368 } 369 lpfc_destroy_vport_work_array(phba, vports); 370 } 371 372 /** 373 * lpfc_new_scsi_buf_s3 - Scsi buffer allocator for HBA with SLI3 IF spec 374 * @vport: The virtual port for which this call being executed. 375 * @num_to_allocate: The requested number of buffers to allocate. 376 * 377 * This routine allocates a scsi buffer for device with SLI-3 interface spec, 378 * the scsi buffer contains all the necessary information needed to initiate 379 * a SCSI I/O. The non-DMAable buffer region contains information to build 380 * the IOCB. The DMAable region contains memory for the FCP CMND, FCP RSP, 381 * and the initial BPL. In addition to allocating memory, the FCP CMND and 382 * FCP RSP BDEs are setup in the BPL and the BPL BDE is setup in the IOCB. 383 * 384 * Return codes: 385 * int - number of scsi buffers that were allocated. 386 * 0 = failure, less than num_to_alloc is a partial failure. 387 **/ 388 static int 389 lpfc_new_scsi_buf_s3(struct lpfc_vport *vport, int num_to_alloc) 390 { 391 struct lpfc_hba *phba = vport->phba; 392 struct lpfc_io_buf *psb; 393 struct ulp_bde64 *bpl; 394 IOCB_t *iocb; 395 dma_addr_t pdma_phys_fcp_cmd; 396 dma_addr_t pdma_phys_fcp_rsp; 397 dma_addr_t pdma_phys_sgl; 398 uint16_t iotag; 399 int bcnt, bpl_size; 400 401 bpl_size = phba->cfg_sg_dma_buf_size - 402 (sizeof(struct fcp_cmnd) + sizeof(struct fcp_rsp)); 403 404 lpfc_printf_vlog(vport, KERN_INFO, LOG_FCP, 405 "9067 ALLOC %d scsi_bufs: %d (%d + %d + %d)\n", 406 num_to_alloc, phba->cfg_sg_dma_buf_size, 407 (int)sizeof(struct fcp_cmnd), 408 (int)sizeof(struct fcp_rsp), bpl_size); 409 410 for (bcnt = 0; bcnt < num_to_alloc; bcnt++) { 411 psb = kzalloc(sizeof(struct lpfc_io_buf), GFP_KERNEL); 412 if (!psb) 413 break; 414 415 /* 416 * Get memory from the pci pool to map the virt space to pci 417 * bus space for an I/O. The DMA buffer includes space for the 418 * struct fcp_cmnd, struct fcp_rsp and the number of bde's 419 * necessary to support the sg_tablesize. 420 */ 421 psb->data = dma_pool_zalloc(phba->lpfc_sg_dma_buf_pool, 422 GFP_KERNEL, &psb->dma_handle); 423 if (!psb->data) { 424 kfree(psb); 425 break; 426 } 427 428 429 /* Allocate iotag for psb->cur_iocbq. */ 430 iotag = lpfc_sli_next_iotag(phba, &psb->cur_iocbq); 431 if (iotag == 0) { 432 dma_pool_free(phba->lpfc_sg_dma_buf_pool, 433 psb->data, psb->dma_handle); 434 kfree(psb); 435 break; 436 } 437 psb->cur_iocbq.iocb_flag |= LPFC_IO_FCP; 438 439 psb->fcp_cmnd = psb->data; 440 psb->fcp_rsp = psb->data + sizeof(struct fcp_cmnd); 441 psb->dma_sgl = psb->data + sizeof(struct fcp_cmnd) + 442 sizeof(struct fcp_rsp); 443 444 /* Initialize local short-hand pointers. */ 445 bpl = (struct ulp_bde64 *)psb->dma_sgl; 446 pdma_phys_fcp_cmd = psb->dma_handle; 447 pdma_phys_fcp_rsp = psb->dma_handle + sizeof(struct fcp_cmnd); 448 pdma_phys_sgl = psb->dma_handle + sizeof(struct fcp_cmnd) + 449 sizeof(struct fcp_rsp); 450 451 /* 452 * The first two bdes are the FCP_CMD and FCP_RSP. The balance 453 * are sg list bdes. Initialize the first two and leave the 454 * rest for queuecommand. 455 */ 456 bpl[0].addrHigh = le32_to_cpu(putPaddrHigh(pdma_phys_fcp_cmd)); 457 bpl[0].addrLow = le32_to_cpu(putPaddrLow(pdma_phys_fcp_cmd)); 458 bpl[0].tus.f.bdeSize = sizeof(struct fcp_cmnd); 459 bpl[0].tus.f.bdeFlags = BUFF_TYPE_BDE_64; 460 bpl[0].tus.w = le32_to_cpu(bpl[0].tus.w); 461 462 /* Setup the physical region for the FCP RSP */ 463 bpl[1].addrHigh = le32_to_cpu(putPaddrHigh(pdma_phys_fcp_rsp)); 464 bpl[1].addrLow = le32_to_cpu(putPaddrLow(pdma_phys_fcp_rsp)); 465 bpl[1].tus.f.bdeSize = sizeof(struct fcp_rsp); 466 bpl[1].tus.f.bdeFlags = BUFF_TYPE_BDE_64; 467 bpl[1].tus.w = le32_to_cpu(bpl[1].tus.w); 468 469 /* 470 * Since the IOCB for the FCP I/O is built into this 471 * lpfc_scsi_buf, initialize it with all known data now. 472 */ 473 iocb = &psb->cur_iocbq.iocb; 474 iocb->un.fcpi64.bdl.ulpIoTag32 = 0; 475 if ((phba->sli_rev == 3) && 476 !(phba->sli3_options & LPFC_SLI3_BG_ENABLED)) { 477 /* fill in immediate fcp command BDE */ 478 iocb->un.fcpi64.bdl.bdeFlags = BUFF_TYPE_BDE_IMMED; 479 iocb->un.fcpi64.bdl.bdeSize = sizeof(struct fcp_cmnd); 480 iocb->un.fcpi64.bdl.addrLow = offsetof(IOCB_t, 481 unsli3.fcp_ext.icd); 482 iocb->un.fcpi64.bdl.addrHigh = 0; 483 iocb->ulpBdeCount = 0; 484 iocb->ulpLe = 0; 485 /* fill in response BDE */ 486 iocb->unsli3.fcp_ext.rbde.tus.f.bdeFlags = 487 BUFF_TYPE_BDE_64; 488 iocb->unsli3.fcp_ext.rbde.tus.f.bdeSize = 489 sizeof(struct fcp_rsp); 490 iocb->unsli3.fcp_ext.rbde.addrLow = 491 putPaddrLow(pdma_phys_fcp_rsp); 492 iocb->unsli3.fcp_ext.rbde.addrHigh = 493 putPaddrHigh(pdma_phys_fcp_rsp); 494 } else { 495 iocb->un.fcpi64.bdl.bdeFlags = BUFF_TYPE_BLP_64; 496 iocb->un.fcpi64.bdl.bdeSize = 497 (2 * sizeof(struct ulp_bde64)); 498 iocb->un.fcpi64.bdl.addrLow = 499 putPaddrLow(pdma_phys_sgl); 500 iocb->un.fcpi64.bdl.addrHigh = 501 putPaddrHigh(pdma_phys_sgl); 502 iocb->ulpBdeCount = 1; 503 iocb->ulpLe = 1; 504 } 505 iocb->ulpClass = CLASS3; 506 psb->status = IOSTAT_SUCCESS; 507 /* Put it back into the SCSI buffer list */ 508 psb->cur_iocbq.context1 = psb; 509 spin_lock_init(&psb->buf_lock); 510 lpfc_release_scsi_buf_s3(phba, psb); 511 512 } 513 514 return bcnt; 515 } 516 517 /** 518 * lpfc_sli4_vport_delete_fcp_xri_aborted -Remove all ndlp references for vport 519 * @vport: pointer to lpfc vport data structure. 520 * 521 * This routine is invoked by the vport cleanup for deletions and the cleanup 522 * for an ndlp on removal. 523 **/ 524 void 525 lpfc_sli4_vport_delete_fcp_xri_aborted(struct lpfc_vport *vport) 526 { 527 struct lpfc_hba *phba = vport->phba; 528 struct lpfc_io_buf *psb, *next_psb; 529 struct lpfc_sli4_hdw_queue *qp; 530 unsigned long iflag = 0; 531 int idx; 532 533 if (!(vport->cfg_enable_fc4_type & LPFC_ENABLE_FCP)) 534 return; 535 536 spin_lock_irqsave(&phba->hbalock, iflag); 537 for (idx = 0; idx < phba->cfg_hdw_queue; idx++) { 538 qp = &phba->sli4_hba.hdwq[idx]; 539 540 spin_lock(&qp->abts_scsi_buf_list_lock); 541 list_for_each_entry_safe(psb, next_psb, 542 &qp->lpfc_abts_scsi_buf_list, list) { 543 if (psb->rdata && psb->rdata->pnode && 544 psb->rdata->pnode->vport == vport) 545 psb->rdata = NULL; 546 } 547 spin_unlock(&qp->abts_scsi_buf_list_lock); 548 } 549 spin_unlock_irqrestore(&phba->hbalock, iflag); 550 } 551 552 /** 553 * lpfc_sli4_fcp_xri_aborted - Fast-path process of fcp xri abort 554 * @phba: pointer to lpfc hba data structure. 555 * @axri: pointer to the fcp xri abort wcqe structure. 556 * 557 * This routine is invoked by the worker thread to process a SLI4 fast-path 558 * FCP aborted xri. 559 **/ 560 void 561 lpfc_sli4_fcp_xri_aborted(struct lpfc_hba *phba, 562 struct sli4_wcqe_xri_aborted *axri, int idx) 563 { 564 uint16_t xri = bf_get(lpfc_wcqe_xa_xri, axri); 565 uint16_t rxid = bf_get(lpfc_wcqe_xa_remote_xid, axri); 566 struct lpfc_io_buf *psb, *next_psb; 567 struct lpfc_sli4_hdw_queue *qp; 568 unsigned long iflag = 0; 569 struct lpfc_iocbq *iocbq; 570 int i; 571 struct lpfc_nodelist *ndlp; 572 int rrq_empty = 0; 573 struct lpfc_sli_ring *pring = phba->sli4_hba.els_wq->pring; 574 575 if (!(phba->cfg_enable_fc4_type & LPFC_ENABLE_FCP)) 576 return; 577 578 qp = &phba->sli4_hba.hdwq[idx]; 579 spin_lock_irqsave(&phba->hbalock, iflag); 580 spin_lock(&qp->abts_scsi_buf_list_lock); 581 list_for_each_entry_safe(psb, next_psb, 582 &qp->lpfc_abts_scsi_buf_list, list) { 583 if (psb->cur_iocbq.sli4_xritag == xri) { 584 list_del(&psb->list); 585 qp->abts_scsi_io_bufs--; 586 psb->exch_busy = 0; 587 psb->status = IOSTAT_SUCCESS; 588 spin_unlock( 589 &qp->abts_scsi_buf_list_lock); 590 if (psb->rdata && psb->rdata->pnode) 591 ndlp = psb->rdata->pnode; 592 else 593 ndlp = NULL; 594 595 rrq_empty = list_empty(&phba->active_rrq_list); 596 spin_unlock_irqrestore(&phba->hbalock, iflag); 597 if (ndlp) { 598 lpfc_set_rrq_active(phba, ndlp, 599 psb->cur_iocbq.sli4_lxritag, rxid, 1); 600 lpfc_sli4_abts_err_handler(phba, ndlp, axri); 601 } 602 lpfc_release_scsi_buf_s4(phba, psb); 603 if (rrq_empty) 604 lpfc_worker_wake_up(phba); 605 return; 606 } 607 } 608 spin_unlock(&qp->abts_scsi_buf_list_lock); 609 for (i = 1; i <= phba->sli.last_iotag; i++) { 610 iocbq = phba->sli.iocbq_lookup[i]; 611 612 if (!(iocbq->iocb_flag & LPFC_IO_FCP) || 613 (iocbq->iocb_flag & LPFC_IO_LIBDFC)) 614 continue; 615 if (iocbq->sli4_xritag != xri) 616 continue; 617 psb = container_of(iocbq, struct lpfc_io_buf, cur_iocbq); 618 psb->exch_busy = 0; 619 spin_unlock_irqrestore(&phba->hbalock, iflag); 620 if (!list_empty(&pring->txq)) 621 lpfc_worker_wake_up(phba); 622 return; 623 624 } 625 spin_unlock_irqrestore(&phba->hbalock, iflag); 626 } 627 628 /** 629 * lpfc_get_scsi_buf_s3 - Get a scsi buffer from lpfc_scsi_buf_list of the HBA 630 * @phba: The HBA for which this call is being executed. 631 * 632 * This routine removes a scsi buffer from head of @phba lpfc_scsi_buf_list list 633 * and returns to caller. 634 * 635 * Return codes: 636 * NULL - Error 637 * Pointer to lpfc_scsi_buf - Success 638 **/ 639 static struct lpfc_io_buf * 640 lpfc_get_scsi_buf_s3(struct lpfc_hba *phba, struct lpfc_nodelist *ndlp, 641 struct scsi_cmnd *cmnd) 642 { 643 struct lpfc_io_buf *lpfc_cmd = NULL; 644 struct list_head *scsi_buf_list_get = &phba->lpfc_scsi_buf_list_get; 645 unsigned long iflag = 0; 646 647 spin_lock_irqsave(&phba->scsi_buf_list_get_lock, iflag); 648 list_remove_head(scsi_buf_list_get, lpfc_cmd, struct lpfc_io_buf, 649 list); 650 if (!lpfc_cmd) { 651 spin_lock(&phba->scsi_buf_list_put_lock); 652 list_splice(&phba->lpfc_scsi_buf_list_put, 653 &phba->lpfc_scsi_buf_list_get); 654 INIT_LIST_HEAD(&phba->lpfc_scsi_buf_list_put); 655 list_remove_head(scsi_buf_list_get, lpfc_cmd, 656 struct lpfc_io_buf, list); 657 spin_unlock(&phba->scsi_buf_list_put_lock); 658 } 659 spin_unlock_irqrestore(&phba->scsi_buf_list_get_lock, iflag); 660 661 if (lpfc_ndlp_check_qdepth(phba, ndlp) && lpfc_cmd) { 662 atomic_inc(&ndlp->cmd_pending); 663 lpfc_cmd->flags |= LPFC_SBUF_BUMP_QDEPTH; 664 } 665 return lpfc_cmd; 666 } 667 /** 668 * lpfc_get_scsi_buf_s4 - Get a scsi buffer from io_buf_list of the HBA 669 * @phba: The HBA for which this call is being executed. 670 * 671 * This routine removes a scsi buffer from head of @hdwq io_buf_list 672 * and returns to caller. 673 * 674 * Return codes: 675 * NULL - Error 676 * Pointer to lpfc_scsi_buf - Success 677 **/ 678 static struct lpfc_io_buf * 679 lpfc_get_scsi_buf_s4(struct lpfc_hba *phba, struct lpfc_nodelist *ndlp, 680 struct scsi_cmnd *cmnd) 681 { 682 struct lpfc_io_buf *lpfc_cmd; 683 struct lpfc_sli4_hdw_queue *qp; 684 struct sli4_sge *sgl; 685 IOCB_t *iocb; 686 dma_addr_t pdma_phys_fcp_rsp; 687 dma_addr_t pdma_phys_fcp_cmd; 688 uint32_t sgl_size, cpu, idx; 689 int tag; 690 691 cpu = raw_smp_processor_id(); 692 if (cmnd && phba->cfg_fcp_io_sched == LPFC_FCP_SCHED_BY_HDWQ) { 693 tag = blk_mq_unique_tag(cmnd->request); 694 idx = blk_mq_unique_tag_to_hwq(tag); 695 } else { 696 idx = phba->sli4_hba.cpu_map[cpu].hdwq; 697 } 698 699 lpfc_cmd = lpfc_get_io_buf(phba, ndlp, idx, 700 !phba->cfg_xri_rebalancing); 701 if (!lpfc_cmd) { 702 qp = &phba->sli4_hba.hdwq[idx]; 703 qp->empty_io_bufs++; 704 return NULL; 705 } 706 707 sgl_size = phba->cfg_sg_dma_buf_size - 708 (sizeof(struct fcp_cmnd) + sizeof(struct fcp_rsp)); 709 710 /* Setup key fields in buffer that may have been changed 711 * if other protocols used this buffer. 712 */ 713 lpfc_cmd->cur_iocbq.iocb_flag = LPFC_IO_FCP; 714 lpfc_cmd->prot_seg_cnt = 0; 715 lpfc_cmd->seg_cnt = 0; 716 lpfc_cmd->timeout = 0; 717 lpfc_cmd->flags = 0; 718 lpfc_cmd->start_time = jiffies; 719 lpfc_cmd->waitq = NULL; 720 lpfc_cmd->cpu = cpu; 721 #ifdef CONFIG_SCSI_LPFC_DEBUG_FS 722 lpfc_cmd->prot_data_type = 0; 723 #endif 724 lpfc_cmd->fcp_cmnd = (lpfc_cmd->data + sgl_size); 725 lpfc_cmd->fcp_rsp = (struct fcp_rsp *)((uint8_t *)lpfc_cmd->fcp_cmnd + 726 sizeof(struct fcp_cmnd)); 727 728 /* 729 * The first two SGEs are the FCP_CMD and FCP_RSP. 730 * The balance are sg list bdes. Initialize the 731 * first two and leave the rest for queuecommand. 732 */ 733 sgl = (struct sli4_sge *)lpfc_cmd->dma_sgl; 734 pdma_phys_fcp_cmd = (lpfc_cmd->dma_handle + sgl_size); 735 sgl->addr_hi = cpu_to_le32(putPaddrHigh(pdma_phys_fcp_cmd)); 736 sgl->addr_lo = cpu_to_le32(putPaddrLow(pdma_phys_fcp_cmd)); 737 sgl->word2 = le32_to_cpu(sgl->word2); 738 bf_set(lpfc_sli4_sge_last, sgl, 0); 739 sgl->word2 = cpu_to_le32(sgl->word2); 740 sgl->sge_len = cpu_to_le32(sizeof(struct fcp_cmnd)); 741 sgl++; 742 743 /* Setup the physical region for the FCP RSP */ 744 pdma_phys_fcp_rsp = pdma_phys_fcp_cmd + sizeof(struct fcp_cmnd); 745 sgl->addr_hi = cpu_to_le32(putPaddrHigh(pdma_phys_fcp_rsp)); 746 sgl->addr_lo = cpu_to_le32(putPaddrLow(pdma_phys_fcp_rsp)); 747 sgl->word2 = le32_to_cpu(sgl->word2); 748 bf_set(lpfc_sli4_sge_last, sgl, 1); 749 sgl->word2 = cpu_to_le32(sgl->word2); 750 sgl->sge_len = cpu_to_le32(sizeof(struct fcp_rsp)); 751 752 /* 753 * Since the IOCB for the FCP I/O is built into this 754 * lpfc_io_buf, initialize it with all known data now. 755 */ 756 iocb = &lpfc_cmd->cur_iocbq.iocb; 757 iocb->un.fcpi64.bdl.ulpIoTag32 = 0; 758 iocb->un.fcpi64.bdl.bdeFlags = BUFF_TYPE_BDE_64; 759 /* setting the BLP size to 2 * sizeof BDE may not be correct. 760 * We are setting the bpl to point to out sgl. An sgl's 761 * entries are 16 bytes, a bpl entries are 12 bytes. 762 */ 763 iocb->un.fcpi64.bdl.bdeSize = sizeof(struct fcp_cmnd); 764 iocb->un.fcpi64.bdl.addrLow = putPaddrLow(pdma_phys_fcp_cmd); 765 iocb->un.fcpi64.bdl.addrHigh = putPaddrHigh(pdma_phys_fcp_cmd); 766 iocb->ulpBdeCount = 1; 767 iocb->ulpLe = 1; 768 iocb->ulpClass = CLASS3; 769 770 if (lpfc_ndlp_check_qdepth(phba, ndlp)) { 771 atomic_inc(&ndlp->cmd_pending); 772 lpfc_cmd->flags |= LPFC_SBUF_BUMP_QDEPTH; 773 } 774 return lpfc_cmd; 775 } 776 /** 777 * lpfc_get_scsi_buf - Get a scsi buffer from lpfc_scsi_buf_list of the HBA 778 * @phba: The HBA for which this call is being executed. 779 * 780 * This routine removes a scsi buffer from head of @phba lpfc_scsi_buf_list list 781 * and returns to caller. 782 * 783 * Return codes: 784 * NULL - Error 785 * Pointer to lpfc_scsi_buf - Success 786 **/ 787 static struct lpfc_io_buf* 788 lpfc_get_scsi_buf(struct lpfc_hba *phba, struct lpfc_nodelist *ndlp, 789 struct scsi_cmnd *cmnd) 790 { 791 return phba->lpfc_get_scsi_buf(phba, ndlp, cmnd); 792 } 793 794 /** 795 * lpfc_release_scsi_buf - Return a scsi buffer back to hba scsi buf list 796 * @phba: The Hba for which this call is being executed. 797 * @psb: The scsi buffer which is being released. 798 * 799 * This routine releases @psb scsi buffer by adding it to tail of @phba 800 * lpfc_scsi_buf_list list. 801 **/ 802 static void 803 lpfc_release_scsi_buf_s3(struct lpfc_hba *phba, struct lpfc_io_buf *psb) 804 { 805 unsigned long iflag = 0; 806 807 psb->seg_cnt = 0; 808 psb->prot_seg_cnt = 0; 809 810 spin_lock_irqsave(&phba->scsi_buf_list_put_lock, iflag); 811 psb->pCmd = NULL; 812 psb->cur_iocbq.iocb_flag = LPFC_IO_FCP; 813 list_add_tail(&psb->list, &phba->lpfc_scsi_buf_list_put); 814 spin_unlock_irqrestore(&phba->scsi_buf_list_put_lock, iflag); 815 } 816 817 /** 818 * lpfc_release_scsi_buf_s4: Return a scsi buffer back to hba scsi buf list. 819 * @phba: The Hba for which this call is being executed. 820 * @psb: The scsi buffer which is being released. 821 * 822 * This routine releases @psb scsi buffer by adding it to tail of @hdwq 823 * io_buf_list list. For SLI4 XRI's are tied to the scsi buffer 824 * and cannot be reused for at least RA_TOV amount of time if it was 825 * aborted. 826 **/ 827 static void 828 lpfc_release_scsi_buf_s4(struct lpfc_hba *phba, struct lpfc_io_buf *psb) 829 { 830 struct lpfc_sli4_hdw_queue *qp; 831 unsigned long iflag = 0; 832 833 psb->seg_cnt = 0; 834 psb->prot_seg_cnt = 0; 835 836 qp = psb->hdwq; 837 if (psb->exch_busy) { 838 spin_lock_irqsave(&qp->abts_scsi_buf_list_lock, iflag); 839 psb->pCmd = NULL; 840 list_add_tail(&psb->list, &qp->lpfc_abts_scsi_buf_list); 841 qp->abts_scsi_io_bufs++; 842 spin_unlock_irqrestore(&qp->abts_scsi_buf_list_lock, iflag); 843 } else { 844 lpfc_release_io_buf(phba, (struct lpfc_io_buf *)psb, qp); 845 } 846 } 847 848 /** 849 * lpfc_release_scsi_buf: Return a scsi buffer back to hba scsi buf list. 850 * @phba: The Hba for which this call is being executed. 851 * @psb: The scsi buffer which is being released. 852 * 853 * This routine releases @psb scsi buffer by adding it to tail of @phba 854 * lpfc_scsi_buf_list list. 855 **/ 856 static void 857 lpfc_release_scsi_buf(struct lpfc_hba *phba, struct lpfc_io_buf *psb) 858 { 859 if ((psb->flags & LPFC_SBUF_BUMP_QDEPTH) && psb->ndlp) 860 atomic_dec(&psb->ndlp->cmd_pending); 861 862 psb->flags &= ~LPFC_SBUF_BUMP_QDEPTH; 863 phba->lpfc_release_scsi_buf(phba, psb); 864 } 865 866 /** 867 * lpfc_scsi_prep_dma_buf_s3 - DMA mapping for scsi buffer to SLI3 IF spec 868 * @phba: The Hba for which this call is being executed. 869 * @lpfc_cmd: The scsi buffer which is going to be mapped. 870 * 871 * This routine does the pci dma mapping for scatter-gather list of scsi cmnd 872 * field of @lpfc_cmd for device with SLI-3 interface spec. This routine scans 873 * through sg elements and format the bde. This routine also initializes all 874 * IOCB fields which are dependent on scsi command request buffer. 875 * 876 * Return codes: 877 * 1 - Error 878 * 0 - Success 879 **/ 880 static int 881 lpfc_scsi_prep_dma_buf_s3(struct lpfc_hba *phba, struct lpfc_io_buf *lpfc_cmd) 882 { 883 struct scsi_cmnd *scsi_cmnd = lpfc_cmd->pCmd; 884 struct scatterlist *sgel = NULL; 885 struct fcp_cmnd *fcp_cmnd = lpfc_cmd->fcp_cmnd; 886 struct ulp_bde64 *bpl = (struct ulp_bde64 *)lpfc_cmd->dma_sgl; 887 struct lpfc_iocbq *iocbq = &lpfc_cmd->cur_iocbq; 888 IOCB_t *iocb_cmd = &lpfc_cmd->cur_iocbq.iocb; 889 struct ulp_bde64 *data_bde = iocb_cmd->unsli3.fcp_ext.dbde; 890 dma_addr_t physaddr; 891 uint32_t num_bde = 0; 892 int nseg, datadir = scsi_cmnd->sc_data_direction; 893 894 /* 895 * There are three possibilities here - use scatter-gather segment, use 896 * the single mapping, or neither. Start the lpfc command prep by 897 * bumping the bpl beyond the fcp_cmnd and fcp_rsp regions to the first 898 * data bde entry. 899 */ 900 bpl += 2; 901 if (scsi_sg_count(scsi_cmnd)) { 902 /* 903 * The driver stores the segment count returned from pci_map_sg 904 * because this a count of dma-mappings used to map the use_sg 905 * pages. They are not guaranteed to be the same for those 906 * architectures that implement an IOMMU. 907 */ 908 909 nseg = dma_map_sg(&phba->pcidev->dev, scsi_sglist(scsi_cmnd), 910 scsi_sg_count(scsi_cmnd), datadir); 911 if (unlikely(!nseg)) 912 return 1; 913 914 lpfc_cmd->seg_cnt = nseg; 915 if (lpfc_cmd->seg_cnt > phba->cfg_sg_seg_cnt) { 916 lpfc_printf_log(phba, KERN_ERR, LOG_BG, 917 "9064 BLKGRD: %s: Too many sg segments from " 918 "dma_map_sg. Config %d, seg_cnt %d\n", 919 __func__, phba->cfg_sg_seg_cnt, 920 lpfc_cmd->seg_cnt); 921 lpfc_cmd->seg_cnt = 0; 922 scsi_dma_unmap(scsi_cmnd); 923 return 1; 924 } 925 926 /* 927 * The driver established a maximum scatter-gather segment count 928 * during probe that limits the number of sg elements in any 929 * single scsi command. Just run through the seg_cnt and format 930 * the bde's. 931 * When using SLI-3 the driver will try to fit all the BDEs into 932 * the IOCB. If it can't then the BDEs get added to a BPL as it 933 * does for SLI-2 mode. 934 */ 935 scsi_for_each_sg(scsi_cmnd, sgel, nseg, num_bde) { 936 physaddr = sg_dma_address(sgel); 937 if (phba->sli_rev == 3 && 938 !(phba->sli3_options & LPFC_SLI3_BG_ENABLED) && 939 !(iocbq->iocb_flag & DSS_SECURITY_OP) && 940 nseg <= LPFC_EXT_DATA_BDE_COUNT) { 941 data_bde->tus.f.bdeFlags = BUFF_TYPE_BDE_64; 942 data_bde->tus.f.bdeSize = sg_dma_len(sgel); 943 data_bde->addrLow = putPaddrLow(physaddr); 944 data_bde->addrHigh = putPaddrHigh(physaddr); 945 data_bde++; 946 } else { 947 bpl->tus.f.bdeFlags = BUFF_TYPE_BDE_64; 948 bpl->tus.f.bdeSize = sg_dma_len(sgel); 949 bpl->tus.w = le32_to_cpu(bpl->tus.w); 950 bpl->addrLow = 951 le32_to_cpu(putPaddrLow(physaddr)); 952 bpl->addrHigh = 953 le32_to_cpu(putPaddrHigh(physaddr)); 954 bpl++; 955 } 956 } 957 } 958 959 /* 960 * Finish initializing those IOCB fields that are dependent on the 961 * scsi_cmnd request_buffer. Note that for SLI-2 the bdeSize is 962 * explicitly reinitialized and for SLI-3 the extended bde count is 963 * explicitly reinitialized since all iocb memory resources are reused. 964 */ 965 if (phba->sli_rev == 3 && 966 !(phba->sli3_options & LPFC_SLI3_BG_ENABLED) && 967 !(iocbq->iocb_flag & DSS_SECURITY_OP)) { 968 if (num_bde > LPFC_EXT_DATA_BDE_COUNT) { 969 /* 970 * The extended IOCB format can only fit 3 BDE or a BPL. 971 * This I/O has more than 3 BDE so the 1st data bde will 972 * be a BPL that is filled in here. 973 */ 974 physaddr = lpfc_cmd->dma_handle; 975 data_bde->tus.f.bdeFlags = BUFF_TYPE_BLP_64; 976 data_bde->tus.f.bdeSize = (num_bde * 977 sizeof(struct ulp_bde64)); 978 physaddr += (sizeof(struct fcp_cmnd) + 979 sizeof(struct fcp_rsp) + 980 (2 * sizeof(struct ulp_bde64))); 981 data_bde->addrHigh = putPaddrHigh(physaddr); 982 data_bde->addrLow = putPaddrLow(physaddr); 983 /* ebde count includes the response bde and data bpl */ 984 iocb_cmd->unsli3.fcp_ext.ebde_count = 2; 985 } else { 986 /* ebde count includes the response bde and data bdes */ 987 iocb_cmd->unsli3.fcp_ext.ebde_count = (num_bde + 1); 988 } 989 } else { 990 iocb_cmd->un.fcpi64.bdl.bdeSize = 991 ((num_bde + 2) * sizeof(struct ulp_bde64)); 992 iocb_cmd->unsli3.fcp_ext.ebde_count = (num_bde + 1); 993 } 994 fcp_cmnd->fcpDl = cpu_to_be32(scsi_bufflen(scsi_cmnd)); 995 996 /* 997 * Due to difference in data length between DIF/non-DIF paths, 998 * we need to set word 4 of IOCB here 999 */ 1000 iocb_cmd->un.fcpi.fcpi_parm = scsi_bufflen(scsi_cmnd); 1001 return 0; 1002 } 1003 1004 #ifdef CONFIG_SCSI_LPFC_DEBUG_FS 1005 1006 /* Return BG_ERR_INIT if error injection is detected by Initiator */ 1007 #define BG_ERR_INIT 0x1 1008 /* Return BG_ERR_TGT if error injection is detected by Target */ 1009 #define BG_ERR_TGT 0x2 1010 /* Return BG_ERR_SWAP if swapping CSUM<-->CRC is required for error injection */ 1011 #define BG_ERR_SWAP 0x10 1012 /** 1013 * Return BG_ERR_CHECK if disabling Guard/Ref/App checking is required for 1014 * error injection 1015 **/ 1016 #define BG_ERR_CHECK 0x20 1017 1018 /** 1019 * lpfc_bg_err_inject - Determine if we should inject an error 1020 * @phba: The Hba for which this call is being executed. 1021 * @sc: The SCSI command to examine 1022 * @reftag: (out) BlockGuard reference tag for transmitted data 1023 * @apptag: (out) BlockGuard application tag for transmitted data 1024 * @new_guard (in) Value to replace CRC with if needed 1025 * 1026 * Returns BG_ERR_* bit mask or 0 if request ignored 1027 **/ 1028 static int 1029 lpfc_bg_err_inject(struct lpfc_hba *phba, struct scsi_cmnd *sc, 1030 uint32_t *reftag, uint16_t *apptag, uint32_t new_guard) 1031 { 1032 struct scatterlist *sgpe; /* s/g prot entry */ 1033 struct lpfc_io_buf *lpfc_cmd = NULL; 1034 struct scsi_dif_tuple *src = NULL; 1035 struct lpfc_nodelist *ndlp; 1036 struct lpfc_rport_data *rdata; 1037 uint32_t op = scsi_get_prot_op(sc); 1038 uint32_t blksize; 1039 uint32_t numblks; 1040 sector_t lba; 1041 int rc = 0; 1042 int blockoff = 0; 1043 1044 if (op == SCSI_PROT_NORMAL) 1045 return 0; 1046 1047 sgpe = scsi_prot_sglist(sc); 1048 lba = scsi_get_lba(sc); 1049 1050 /* First check if we need to match the LBA */ 1051 if (phba->lpfc_injerr_lba != LPFC_INJERR_LBA_OFF) { 1052 blksize = lpfc_cmd_blksize(sc); 1053 numblks = (scsi_bufflen(sc) + blksize - 1) / blksize; 1054 1055 /* Make sure we have the right LBA if one is specified */ 1056 if ((phba->lpfc_injerr_lba < lba) || 1057 (phba->lpfc_injerr_lba >= (lba + numblks))) 1058 return 0; 1059 if (sgpe) { 1060 blockoff = phba->lpfc_injerr_lba - lba; 1061 numblks = sg_dma_len(sgpe) / 1062 sizeof(struct scsi_dif_tuple); 1063 if (numblks < blockoff) 1064 blockoff = numblks; 1065 } 1066 } 1067 1068 /* Next check if we need to match the remote NPortID or WWPN */ 1069 rdata = lpfc_rport_data_from_scsi_device(sc->device); 1070 if (rdata && rdata->pnode) { 1071 ndlp = rdata->pnode; 1072 1073 /* Make sure we have the right NPortID if one is specified */ 1074 if (phba->lpfc_injerr_nportid && 1075 (phba->lpfc_injerr_nportid != ndlp->nlp_DID)) 1076 return 0; 1077 1078 /* 1079 * Make sure we have the right WWPN if one is specified. 1080 * wwn[0] should be a non-zero NAA in a good WWPN. 1081 */ 1082 if (phba->lpfc_injerr_wwpn.u.wwn[0] && 1083 (memcmp(&ndlp->nlp_portname, &phba->lpfc_injerr_wwpn, 1084 sizeof(struct lpfc_name)) != 0)) 1085 return 0; 1086 } 1087 1088 /* Setup a ptr to the protection data if the SCSI host provides it */ 1089 if (sgpe) { 1090 src = (struct scsi_dif_tuple *)sg_virt(sgpe); 1091 src += blockoff; 1092 lpfc_cmd = (struct lpfc_io_buf *)sc->host_scribble; 1093 } 1094 1095 /* Should we change the Reference Tag */ 1096 if (reftag) { 1097 if (phba->lpfc_injerr_wref_cnt) { 1098 switch (op) { 1099 case SCSI_PROT_WRITE_PASS: 1100 if (src) { 1101 /* 1102 * For WRITE_PASS, force the error 1103 * to be sent on the wire. It should 1104 * be detected by the Target. 1105 * If blockoff != 0 error will be 1106 * inserted in middle of the IO. 1107 */ 1108 1109 lpfc_printf_log(phba, KERN_ERR, LOG_BG, 1110 "9076 BLKGRD: Injecting reftag error: " 1111 "write lba x%lx + x%x oldrefTag x%x\n", 1112 (unsigned long)lba, blockoff, 1113 be32_to_cpu(src->ref_tag)); 1114 1115 /* 1116 * Save the old ref_tag so we can 1117 * restore it on completion. 1118 */ 1119 if (lpfc_cmd) { 1120 lpfc_cmd->prot_data_type = 1121 LPFC_INJERR_REFTAG; 1122 lpfc_cmd->prot_data_segment = 1123 src; 1124 lpfc_cmd->prot_data = 1125 src->ref_tag; 1126 } 1127 src->ref_tag = cpu_to_be32(0xDEADBEEF); 1128 phba->lpfc_injerr_wref_cnt--; 1129 if (phba->lpfc_injerr_wref_cnt == 0) { 1130 phba->lpfc_injerr_nportid = 0; 1131 phba->lpfc_injerr_lba = 1132 LPFC_INJERR_LBA_OFF; 1133 memset(&phba->lpfc_injerr_wwpn, 1134 0, sizeof(struct lpfc_name)); 1135 } 1136 rc = BG_ERR_TGT | BG_ERR_CHECK; 1137 1138 break; 1139 } 1140 /* fall through */ 1141 case SCSI_PROT_WRITE_INSERT: 1142 /* 1143 * For WRITE_INSERT, force the error 1144 * to be sent on the wire. It should be 1145 * detected by the Target. 1146 */ 1147 /* DEADBEEF will be the reftag on the wire */ 1148 *reftag = 0xDEADBEEF; 1149 phba->lpfc_injerr_wref_cnt--; 1150 if (phba->lpfc_injerr_wref_cnt == 0) { 1151 phba->lpfc_injerr_nportid = 0; 1152 phba->lpfc_injerr_lba = 1153 LPFC_INJERR_LBA_OFF; 1154 memset(&phba->lpfc_injerr_wwpn, 1155 0, sizeof(struct lpfc_name)); 1156 } 1157 rc = BG_ERR_TGT | BG_ERR_CHECK; 1158 1159 lpfc_printf_log(phba, KERN_ERR, LOG_BG, 1160 "9078 BLKGRD: Injecting reftag error: " 1161 "write lba x%lx\n", (unsigned long)lba); 1162 break; 1163 case SCSI_PROT_WRITE_STRIP: 1164 /* 1165 * For WRITE_STRIP and WRITE_PASS, 1166 * force the error on data 1167 * being copied from SLI-Host to SLI-Port. 1168 */ 1169 *reftag = 0xDEADBEEF; 1170 phba->lpfc_injerr_wref_cnt--; 1171 if (phba->lpfc_injerr_wref_cnt == 0) { 1172 phba->lpfc_injerr_nportid = 0; 1173 phba->lpfc_injerr_lba = 1174 LPFC_INJERR_LBA_OFF; 1175 memset(&phba->lpfc_injerr_wwpn, 1176 0, sizeof(struct lpfc_name)); 1177 } 1178 rc = BG_ERR_INIT; 1179 1180 lpfc_printf_log(phba, KERN_ERR, LOG_BG, 1181 "9077 BLKGRD: Injecting reftag error: " 1182 "write lba x%lx\n", (unsigned long)lba); 1183 break; 1184 } 1185 } 1186 if (phba->lpfc_injerr_rref_cnt) { 1187 switch (op) { 1188 case SCSI_PROT_READ_INSERT: 1189 case SCSI_PROT_READ_STRIP: 1190 case SCSI_PROT_READ_PASS: 1191 /* 1192 * For READ_STRIP and READ_PASS, force the 1193 * error on data being read off the wire. It 1194 * should force an IO error to the driver. 1195 */ 1196 *reftag = 0xDEADBEEF; 1197 phba->lpfc_injerr_rref_cnt--; 1198 if (phba->lpfc_injerr_rref_cnt == 0) { 1199 phba->lpfc_injerr_nportid = 0; 1200 phba->lpfc_injerr_lba = 1201 LPFC_INJERR_LBA_OFF; 1202 memset(&phba->lpfc_injerr_wwpn, 1203 0, sizeof(struct lpfc_name)); 1204 } 1205 rc = BG_ERR_INIT; 1206 1207 lpfc_printf_log(phba, KERN_ERR, LOG_BG, 1208 "9079 BLKGRD: Injecting reftag error: " 1209 "read lba x%lx\n", (unsigned long)lba); 1210 break; 1211 } 1212 } 1213 } 1214 1215 /* Should we change the Application Tag */ 1216 if (apptag) { 1217 if (phba->lpfc_injerr_wapp_cnt) { 1218 switch (op) { 1219 case SCSI_PROT_WRITE_PASS: 1220 if (src) { 1221 /* 1222 * For WRITE_PASS, force the error 1223 * to be sent on the wire. It should 1224 * be detected by the Target. 1225 * If blockoff != 0 error will be 1226 * inserted in middle of the IO. 1227 */ 1228 1229 lpfc_printf_log(phba, KERN_ERR, LOG_BG, 1230 "9080 BLKGRD: Injecting apptag error: " 1231 "write lba x%lx + x%x oldappTag x%x\n", 1232 (unsigned long)lba, blockoff, 1233 be16_to_cpu(src->app_tag)); 1234 1235 /* 1236 * Save the old app_tag so we can 1237 * restore it on completion. 1238 */ 1239 if (lpfc_cmd) { 1240 lpfc_cmd->prot_data_type = 1241 LPFC_INJERR_APPTAG; 1242 lpfc_cmd->prot_data_segment = 1243 src; 1244 lpfc_cmd->prot_data = 1245 src->app_tag; 1246 } 1247 src->app_tag = cpu_to_be16(0xDEAD); 1248 phba->lpfc_injerr_wapp_cnt--; 1249 if (phba->lpfc_injerr_wapp_cnt == 0) { 1250 phba->lpfc_injerr_nportid = 0; 1251 phba->lpfc_injerr_lba = 1252 LPFC_INJERR_LBA_OFF; 1253 memset(&phba->lpfc_injerr_wwpn, 1254 0, sizeof(struct lpfc_name)); 1255 } 1256 rc = BG_ERR_TGT | BG_ERR_CHECK; 1257 break; 1258 } 1259 /* fall through */ 1260 case SCSI_PROT_WRITE_INSERT: 1261 /* 1262 * For WRITE_INSERT, force the 1263 * error to be sent on the wire. It should be 1264 * detected by the Target. 1265 */ 1266 /* DEAD will be the apptag on the wire */ 1267 *apptag = 0xDEAD; 1268 phba->lpfc_injerr_wapp_cnt--; 1269 if (phba->lpfc_injerr_wapp_cnt == 0) { 1270 phba->lpfc_injerr_nportid = 0; 1271 phba->lpfc_injerr_lba = 1272 LPFC_INJERR_LBA_OFF; 1273 memset(&phba->lpfc_injerr_wwpn, 1274 0, sizeof(struct lpfc_name)); 1275 } 1276 rc = BG_ERR_TGT | BG_ERR_CHECK; 1277 1278 lpfc_printf_log(phba, KERN_ERR, LOG_BG, 1279 "0813 BLKGRD: Injecting apptag error: " 1280 "write lba x%lx\n", (unsigned long)lba); 1281 break; 1282 case SCSI_PROT_WRITE_STRIP: 1283 /* 1284 * For WRITE_STRIP and WRITE_PASS, 1285 * force the error on data 1286 * being copied from SLI-Host to SLI-Port. 1287 */ 1288 *apptag = 0xDEAD; 1289 phba->lpfc_injerr_wapp_cnt--; 1290 if (phba->lpfc_injerr_wapp_cnt == 0) { 1291 phba->lpfc_injerr_nportid = 0; 1292 phba->lpfc_injerr_lba = 1293 LPFC_INJERR_LBA_OFF; 1294 memset(&phba->lpfc_injerr_wwpn, 1295 0, sizeof(struct lpfc_name)); 1296 } 1297 rc = BG_ERR_INIT; 1298 1299 lpfc_printf_log(phba, KERN_ERR, LOG_BG, 1300 "0812 BLKGRD: Injecting apptag error: " 1301 "write lba x%lx\n", (unsigned long)lba); 1302 break; 1303 } 1304 } 1305 if (phba->lpfc_injerr_rapp_cnt) { 1306 switch (op) { 1307 case SCSI_PROT_READ_INSERT: 1308 case SCSI_PROT_READ_STRIP: 1309 case SCSI_PROT_READ_PASS: 1310 /* 1311 * For READ_STRIP and READ_PASS, force the 1312 * error on data being read off the wire. It 1313 * should force an IO error to the driver. 1314 */ 1315 *apptag = 0xDEAD; 1316 phba->lpfc_injerr_rapp_cnt--; 1317 if (phba->lpfc_injerr_rapp_cnt == 0) { 1318 phba->lpfc_injerr_nportid = 0; 1319 phba->lpfc_injerr_lba = 1320 LPFC_INJERR_LBA_OFF; 1321 memset(&phba->lpfc_injerr_wwpn, 1322 0, sizeof(struct lpfc_name)); 1323 } 1324 rc = BG_ERR_INIT; 1325 1326 lpfc_printf_log(phba, KERN_ERR, LOG_BG, 1327 "0814 BLKGRD: Injecting apptag error: " 1328 "read lba x%lx\n", (unsigned long)lba); 1329 break; 1330 } 1331 } 1332 } 1333 1334 1335 /* Should we change the Guard Tag */ 1336 if (new_guard) { 1337 if (phba->lpfc_injerr_wgrd_cnt) { 1338 switch (op) { 1339 case SCSI_PROT_WRITE_PASS: 1340 rc = BG_ERR_CHECK; 1341 /* fall through */ 1342 1343 case SCSI_PROT_WRITE_INSERT: 1344 /* 1345 * For WRITE_INSERT, force the 1346 * error to be sent on the wire. It should be 1347 * detected by the Target. 1348 */ 1349 phba->lpfc_injerr_wgrd_cnt--; 1350 if (phba->lpfc_injerr_wgrd_cnt == 0) { 1351 phba->lpfc_injerr_nportid = 0; 1352 phba->lpfc_injerr_lba = 1353 LPFC_INJERR_LBA_OFF; 1354 memset(&phba->lpfc_injerr_wwpn, 1355 0, sizeof(struct lpfc_name)); 1356 } 1357 1358 rc |= BG_ERR_TGT | BG_ERR_SWAP; 1359 /* Signals the caller to swap CRC->CSUM */ 1360 1361 lpfc_printf_log(phba, KERN_ERR, LOG_BG, 1362 "0817 BLKGRD: Injecting guard error: " 1363 "write lba x%lx\n", (unsigned long)lba); 1364 break; 1365 case SCSI_PROT_WRITE_STRIP: 1366 /* 1367 * For WRITE_STRIP and WRITE_PASS, 1368 * force the error on data 1369 * being copied from SLI-Host to SLI-Port. 1370 */ 1371 phba->lpfc_injerr_wgrd_cnt--; 1372 if (phba->lpfc_injerr_wgrd_cnt == 0) { 1373 phba->lpfc_injerr_nportid = 0; 1374 phba->lpfc_injerr_lba = 1375 LPFC_INJERR_LBA_OFF; 1376 memset(&phba->lpfc_injerr_wwpn, 1377 0, sizeof(struct lpfc_name)); 1378 } 1379 1380 rc = BG_ERR_INIT | BG_ERR_SWAP; 1381 /* Signals the caller to swap CRC->CSUM */ 1382 1383 lpfc_printf_log(phba, KERN_ERR, LOG_BG, 1384 "0816 BLKGRD: Injecting guard error: " 1385 "write lba x%lx\n", (unsigned long)lba); 1386 break; 1387 } 1388 } 1389 if (phba->lpfc_injerr_rgrd_cnt) { 1390 switch (op) { 1391 case SCSI_PROT_READ_INSERT: 1392 case SCSI_PROT_READ_STRIP: 1393 case SCSI_PROT_READ_PASS: 1394 /* 1395 * For READ_STRIP and READ_PASS, force the 1396 * error on data being read off the wire. It 1397 * should force an IO error to the driver. 1398 */ 1399 phba->lpfc_injerr_rgrd_cnt--; 1400 if (phba->lpfc_injerr_rgrd_cnt == 0) { 1401 phba->lpfc_injerr_nportid = 0; 1402 phba->lpfc_injerr_lba = 1403 LPFC_INJERR_LBA_OFF; 1404 memset(&phba->lpfc_injerr_wwpn, 1405 0, sizeof(struct lpfc_name)); 1406 } 1407 1408 rc = BG_ERR_INIT | BG_ERR_SWAP; 1409 /* Signals the caller to swap CRC->CSUM */ 1410 1411 lpfc_printf_log(phba, KERN_ERR, LOG_BG, 1412 "0818 BLKGRD: Injecting guard error: " 1413 "read lba x%lx\n", (unsigned long)lba); 1414 } 1415 } 1416 } 1417 1418 return rc; 1419 } 1420 #endif 1421 1422 /** 1423 * lpfc_sc_to_bg_opcodes - Determine the BlockGuard opcodes to be used with 1424 * the specified SCSI command. 1425 * @phba: The Hba for which this call is being executed. 1426 * @sc: The SCSI command to examine 1427 * @txopt: (out) BlockGuard operation for transmitted data 1428 * @rxopt: (out) BlockGuard operation for received data 1429 * 1430 * Returns: zero on success; non-zero if tx and/or rx op cannot be determined 1431 * 1432 **/ 1433 static int 1434 lpfc_sc_to_bg_opcodes(struct lpfc_hba *phba, struct scsi_cmnd *sc, 1435 uint8_t *txop, uint8_t *rxop) 1436 { 1437 uint8_t ret = 0; 1438 1439 if (lpfc_cmd_guard_csum(sc)) { 1440 switch (scsi_get_prot_op(sc)) { 1441 case SCSI_PROT_READ_INSERT: 1442 case SCSI_PROT_WRITE_STRIP: 1443 *rxop = BG_OP_IN_NODIF_OUT_CSUM; 1444 *txop = BG_OP_IN_CSUM_OUT_NODIF; 1445 break; 1446 1447 case SCSI_PROT_READ_STRIP: 1448 case SCSI_PROT_WRITE_INSERT: 1449 *rxop = BG_OP_IN_CRC_OUT_NODIF; 1450 *txop = BG_OP_IN_NODIF_OUT_CRC; 1451 break; 1452 1453 case SCSI_PROT_READ_PASS: 1454 case SCSI_PROT_WRITE_PASS: 1455 *rxop = BG_OP_IN_CRC_OUT_CSUM; 1456 *txop = BG_OP_IN_CSUM_OUT_CRC; 1457 break; 1458 1459 case SCSI_PROT_NORMAL: 1460 default: 1461 lpfc_printf_log(phba, KERN_ERR, LOG_BG, 1462 "9063 BLKGRD: Bad op/guard:%d/IP combination\n", 1463 scsi_get_prot_op(sc)); 1464 ret = 1; 1465 break; 1466 1467 } 1468 } else { 1469 switch (scsi_get_prot_op(sc)) { 1470 case SCSI_PROT_READ_STRIP: 1471 case SCSI_PROT_WRITE_INSERT: 1472 *rxop = BG_OP_IN_CRC_OUT_NODIF; 1473 *txop = BG_OP_IN_NODIF_OUT_CRC; 1474 break; 1475 1476 case SCSI_PROT_READ_PASS: 1477 case SCSI_PROT_WRITE_PASS: 1478 *rxop = BG_OP_IN_CRC_OUT_CRC; 1479 *txop = BG_OP_IN_CRC_OUT_CRC; 1480 break; 1481 1482 case SCSI_PROT_READ_INSERT: 1483 case SCSI_PROT_WRITE_STRIP: 1484 *rxop = BG_OP_IN_NODIF_OUT_CRC; 1485 *txop = BG_OP_IN_CRC_OUT_NODIF; 1486 break; 1487 1488 case SCSI_PROT_NORMAL: 1489 default: 1490 lpfc_printf_log(phba, KERN_ERR, LOG_BG, 1491 "9075 BLKGRD: Bad op/guard:%d/CRC combination\n", 1492 scsi_get_prot_op(sc)); 1493 ret = 1; 1494 break; 1495 } 1496 } 1497 1498 return ret; 1499 } 1500 1501 #ifdef CONFIG_SCSI_LPFC_DEBUG_FS 1502 /** 1503 * lpfc_bg_err_opcodes - reDetermine the BlockGuard opcodes to be used with 1504 * the specified SCSI command in order to force a guard tag error. 1505 * @phba: The Hba for which this call is being executed. 1506 * @sc: The SCSI command to examine 1507 * @txopt: (out) BlockGuard operation for transmitted data 1508 * @rxopt: (out) BlockGuard operation for received data 1509 * 1510 * Returns: zero on success; non-zero if tx and/or rx op cannot be determined 1511 * 1512 **/ 1513 static int 1514 lpfc_bg_err_opcodes(struct lpfc_hba *phba, struct scsi_cmnd *sc, 1515 uint8_t *txop, uint8_t *rxop) 1516 { 1517 uint8_t ret = 0; 1518 1519 if (lpfc_cmd_guard_csum(sc)) { 1520 switch (scsi_get_prot_op(sc)) { 1521 case SCSI_PROT_READ_INSERT: 1522 case SCSI_PROT_WRITE_STRIP: 1523 *rxop = BG_OP_IN_NODIF_OUT_CRC; 1524 *txop = BG_OP_IN_CRC_OUT_NODIF; 1525 break; 1526 1527 case SCSI_PROT_READ_STRIP: 1528 case SCSI_PROT_WRITE_INSERT: 1529 *rxop = BG_OP_IN_CSUM_OUT_NODIF; 1530 *txop = BG_OP_IN_NODIF_OUT_CSUM; 1531 break; 1532 1533 case SCSI_PROT_READ_PASS: 1534 case SCSI_PROT_WRITE_PASS: 1535 *rxop = BG_OP_IN_CSUM_OUT_CRC; 1536 *txop = BG_OP_IN_CRC_OUT_CSUM; 1537 break; 1538 1539 case SCSI_PROT_NORMAL: 1540 default: 1541 break; 1542 1543 } 1544 } else { 1545 switch (scsi_get_prot_op(sc)) { 1546 case SCSI_PROT_READ_STRIP: 1547 case SCSI_PROT_WRITE_INSERT: 1548 *rxop = BG_OP_IN_CSUM_OUT_NODIF; 1549 *txop = BG_OP_IN_NODIF_OUT_CSUM; 1550 break; 1551 1552 case SCSI_PROT_READ_PASS: 1553 case SCSI_PROT_WRITE_PASS: 1554 *rxop = BG_OP_IN_CSUM_OUT_CSUM; 1555 *txop = BG_OP_IN_CSUM_OUT_CSUM; 1556 break; 1557 1558 case SCSI_PROT_READ_INSERT: 1559 case SCSI_PROT_WRITE_STRIP: 1560 *rxop = BG_OP_IN_NODIF_OUT_CSUM; 1561 *txop = BG_OP_IN_CSUM_OUT_NODIF; 1562 break; 1563 1564 case SCSI_PROT_NORMAL: 1565 default: 1566 break; 1567 } 1568 } 1569 1570 return ret; 1571 } 1572 #endif 1573 1574 /** 1575 * lpfc_bg_setup_bpl - Setup BlockGuard BPL with no protection data 1576 * @phba: The Hba for which this call is being executed. 1577 * @sc: pointer to scsi command we're working on 1578 * @bpl: pointer to buffer list for protection groups 1579 * @datacnt: number of segments of data that have been dma mapped 1580 * 1581 * This function sets up BPL buffer list for protection groups of 1582 * type LPFC_PG_TYPE_NO_DIF 1583 * 1584 * This is usually used when the HBA is instructed to generate 1585 * DIFs and insert them into data stream (or strip DIF from 1586 * incoming data stream) 1587 * 1588 * The buffer list consists of just one protection group described 1589 * below: 1590 * +-------------------------+ 1591 * start of prot group --> | PDE_5 | 1592 * +-------------------------+ 1593 * | PDE_6 | 1594 * +-------------------------+ 1595 * | Data BDE | 1596 * +-------------------------+ 1597 * |more Data BDE's ... (opt)| 1598 * +-------------------------+ 1599 * 1600 * 1601 * Note: Data s/g buffers have been dma mapped 1602 * 1603 * Returns the number of BDEs added to the BPL. 1604 **/ 1605 static int 1606 lpfc_bg_setup_bpl(struct lpfc_hba *phba, struct scsi_cmnd *sc, 1607 struct ulp_bde64 *bpl, int datasegcnt) 1608 { 1609 struct scatterlist *sgde = NULL; /* s/g data entry */ 1610 struct lpfc_pde5 *pde5 = NULL; 1611 struct lpfc_pde6 *pde6 = NULL; 1612 dma_addr_t physaddr; 1613 int i = 0, num_bde = 0, status; 1614 int datadir = sc->sc_data_direction; 1615 #ifdef CONFIG_SCSI_LPFC_DEBUG_FS 1616 uint32_t rc; 1617 #endif 1618 uint32_t checking = 1; 1619 uint32_t reftag; 1620 uint8_t txop, rxop; 1621 1622 status = lpfc_sc_to_bg_opcodes(phba, sc, &txop, &rxop); 1623 if (status) 1624 goto out; 1625 1626 /* extract some info from the scsi command for pde*/ 1627 reftag = (uint32_t)scsi_get_lba(sc); /* Truncate LBA */ 1628 1629 #ifdef CONFIG_SCSI_LPFC_DEBUG_FS 1630 rc = lpfc_bg_err_inject(phba, sc, &reftag, NULL, 1); 1631 if (rc) { 1632 if (rc & BG_ERR_SWAP) 1633 lpfc_bg_err_opcodes(phba, sc, &txop, &rxop); 1634 if (rc & BG_ERR_CHECK) 1635 checking = 0; 1636 } 1637 #endif 1638 1639 /* setup PDE5 with what we have */ 1640 pde5 = (struct lpfc_pde5 *) bpl; 1641 memset(pde5, 0, sizeof(struct lpfc_pde5)); 1642 bf_set(pde5_type, pde5, LPFC_PDE5_DESCRIPTOR); 1643 1644 /* Endianness conversion if necessary for PDE5 */ 1645 pde5->word0 = cpu_to_le32(pde5->word0); 1646 pde5->reftag = cpu_to_le32(reftag); 1647 1648 /* advance bpl and increment bde count */ 1649 num_bde++; 1650 bpl++; 1651 pde6 = (struct lpfc_pde6 *) bpl; 1652 1653 /* setup PDE6 with the rest of the info */ 1654 memset(pde6, 0, sizeof(struct lpfc_pde6)); 1655 bf_set(pde6_type, pde6, LPFC_PDE6_DESCRIPTOR); 1656 bf_set(pde6_optx, pde6, txop); 1657 bf_set(pde6_oprx, pde6, rxop); 1658 1659 /* 1660 * We only need to check the data on READs, for WRITEs 1661 * protection data is automatically generated, not checked. 1662 */ 1663 if (datadir == DMA_FROM_DEVICE) { 1664 if (lpfc_cmd_protect(sc, LPFC_CHECK_PROTECT_GUARD)) 1665 bf_set(pde6_ce, pde6, checking); 1666 else 1667 bf_set(pde6_ce, pde6, 0); 1668 1669 if (lpfc_cmd_protect(sc, LPFC_CHECK_PROTECT_REF)) 1670 bf_set(pde6_re, pde6, checking); 1671 else 1672 bf_set(pde6_re, pde6, 0); 1673 } 1674 bf_set(pde6_ai, pde6, 1); 1675 bf_set(pde6_ae, pde6, 0); 1676 bf_set(pde6_apptagval, pde6, 0); 1677 1678 /* Endianness conversion if necessary for PDE6 */ 1679 pde6->word0 = cpu_to_le32(pde6->word0); 1680 pde6->word1 = cpu_to_le32(pde6->word1); 1681 pde6->word2 = cpu_to_le32(pde6->word2); 1682 1683 /* advance bpl and increment bde count */ 1684 num_bde++; 1685 bpl++; 1686 1687 /* assumption: caller has already run dma_map_sg on command data */ 1688 scsi_for_each_sg(sc, sgde, datasegcnt, i) { 1689 physaddr = sg_dma_address(sgde); 1690 bpl->addrLow = le32_to_cpu(putPaddrLow(physaddr)); 1691 bpl->addrHigh = le32_to_cpu(putPaddrHigh(physaddr)); 1692 bpl->tus.f.bdeSize = sg_dma_len(sgde); 1693 if (datadir == DMA_TO_DEVICE) 1694 bpl->tus.f.bdeFlags = BUFF_TYPE_BDE_64; 1695 else 1696 bpl->tus.f.bdeFlags = BUFF_TYPE_BDE_64I; 1697 bpl->tus.w = le32_to_cpu(bpl->tus.w); 1698 bpl++; 1699 num_bde++; 1700 } 1701 1702 out: 1703 return num_bde; 1704 } 1705 1706 /** 1707 * lpfc_bg_setup_bpl_prot - Setup BlockGuard BPL with protection data 1708 * @phba: The Hba for which this call is being executed. 1709 * @sc: pointer to scsi command we're working on 1710 * @bpl: pointer to buffer list for protection groups 1711 * @datacnt: number of segments of data that have been dma mapped 1712 * @protcnt: number of segment of protection data that have been dma mapped 1713 * 1714 * This function sets up BPL buffer list for protection groups of 1715 * type LPFC_PG_TYPE_DIF 1716 * 1717 * This is usually used when DIFs are in their own buffers, 1718 * separate from the data. The HBA can then by instructed 1719 * to place the DIFs in the outgoing stream. For read operations, 1720 * The HBA could extract the DIFs and place it in DIF buffers. 1721 * 1722 * The buffer list for this type consists of one or more of the 1723 * protection groups described below: 1724 * +-------------------------+ 1725 * start of first prot group --> | PDE_5 | 1726 * +-------------------------+ 1727 * | PDE_6 | 1728 * +-------------------------+ 1729 * | PDE_7 (Prot BDE) | 1730 * +-------------------------+ 1731 * | Data BDE | 1732 * +-------------------------+ 1733 * |more Data BDE's ... (opt)| 1734 * +-------------------------+ 1735 * start of new prot group --> | PDE_5 | 1736 * +-------------------------+ 1737 * | ... | 1738 * +-------------------------+ 1739 * 1740 * Note: It is assumed that both data and protection s/g buffers have been 1741 * mapped for DMA 1742 * 1743 * Returns the number of BDEs added to the BPL. 1744 **/ 1745 static int 1746 lpfc_bg_setup_bpl_prot(struct lpfc_hba *phba, struct scsi_cmnd *sc, 1747 struct ulp_bde64 *bpl, int datacnt, int protcnt) 1748 { 1749 struct scatterlist *sgde = NULL; /* s/g data entry */ 1750 struct scatterlist *sgpe = NULL; /* s/g prot entry */ 1751 struct lpfc_pde5 *pde5 = NULL; 1752 struct lpfc_pde6 *pde6 = NULL; 1753 struct lpfc_pde7 *pde7 = NULL; 1754 dma_addr_t dataphysaddr, protphysaddr; 1755 unsigned short curr_data = 0, curr_prot = 0; 1756 unsigned int split_offset; 1757 unsigned int protgroup_len, protgroup_offset = 0, protgroup_remainder; 1758 unsigned int protgrp_blks, protgrp_bytes; 1759 unsigned int remainder, subtotal; 1760 int status; 1761 int datadir = sc->sc_data_direction; 1762 unsigned char pgdone = 0, alldone = 0; 1763 unsigned blksize; 1764 #ifdef CONFIG_SCSI_LPFC_DEBUG_FS 1765 uint32_t rc; 1766 #endif 1767 uint32_t checking = 1; 1768 uint32_t reftag; 1769 uint8_t txop, rxop; 1770 int num_bde = 0; 1771 1772 sgpe = scsi_prot_sglist(sc); 1773 sgde = scsi_sglist(sc); 1774 1775 if (!sgpe || !sgde) { 1776 lpfc_printf_log(phba, KERN_ERR, LOG_FCP, 1777 "9020 Invalid s/g entry: data=0x%p prot=0x%p\n", 1778 sgpe, sgde); 1779 return 0; 1780 } 1781 1782 status = lpfc_sc_to_bg_opcodes(phba, sc, &txop, &rxop); 1783 if (status) 1784 goto out; 1785 1786 /* extract some info from the scsi command */ 1787 blksize = lpfc_cmd_blksize(sc); 1788 reftag = (uint32_t)scsi_get_lba(sc); /* Truncate LBA */ 1789 1790 #ifdef CONFIG_SCSI_LPFC_DEBUG_FS 1791 rc = lpfc_bg_err_inject(phba, sc, &reftag, NULL, 1); 1792 if (rc) { 1793 if (rc & BG_ERR_SWAP) 1794 lpfc_bg_err_opcodes(phba, sc, &txop, &rxop); 1795 if (rc & BG_ERR_CHECK) 1796 checking = 0; 1797 } 1798 #endif 1799 1800 split_offset = 0; 1801 do { 1802 /* Check to see if we ran out of space */ 1803 if (num_bde >= (phba->cfg_total_seg_cnt - 2)) 1804 return num_bde + 3; 1805 1806 /* setup PDE5 with what we have */ 1807 pde5 = (struct lpfc_pde5 *) bpl; 1808 memset(pde5, 0, sizeof(struct lpfc_pde5)); 1809 bf_set(pde5_type, pde5, LPFC_PDE5_DESCRIPTOR); 1810 1811 /* Endianness conversion if necessary for PDE5 */ 1812 pde5->word0 = cpu_to_le32(pde5->word0); 1813 pde5->reftag = cpu_to_le32(reftag); 1814 1815 /* advance bpl and increment bde count */ 1816 num_bde++; 1817 bpl++; 1818 pde6 = (struct lpfc_pde6 *) bpl; 1819 1820 /* setup PDE6 with the rest of the info */ 1821 memset(pde6, 0, sizeof(struct lpfc_pde6)); 1822 bf_set(pde6_type, pde6, LPFC_PDE6_DESCRIPTOR); 1823 bf_set(pde6_optx, pde6, txop); 1824 bf_set(pde6_oprx, pde6, rxop); 1825 1826 if (lpfc_cmd_protect(sc, LPFC_CHECK_PROTECT_GUARD)) 1827 bf_set(pde6_ce, pde6, checking); 1828 else 1829 bf_set(pde6_ce, pde6, 0); 1830 1831 if (lpfc_cmd_protect(sc, LPFC_CHECK_PROTECT_REF)) 1832 bf_set(pde6_re, pde6, checking); 1833 else 1834 bf_set(pde6_re, pde6, 0); 1835 1836 bf_set(pde6_ai, pde6, 1); 1837 bf_set(pde6_ae, pde6, 0); 1838 bf_set(pde6_apptagval, pde6, 0); 1839 1840 /* Endianness conversion if necessary for PDE6 */ 1841 pde6->word0 = cpu_to_le32(pde6->word0); 1842 pde6->word1 = cpu_to_le32(pde6->word1); 1843 pde6->word2 = cpu_to_le32(pde6->word2); 1844 1845 /* advance bpl and increment bde count */ 1846 num_bde++; 1847 bpl++; 1848 1849 /* setup the first BDE that points to protection buffer */ 1850 protphysaddr = sg_dma_address(sgpe) + protgroup_offset; 1851 protgroup_len = sg_dma_len(sgpe) - protgroup_offset; 1852 1853 /* must be integer multiple of the DIF block length */ 1854 BUG_ON(protgroup_len % 8); 1855 1856 pde7 = (struct lpfc_pde7 *) bpl; 1857 memset(pde7, 0, sizeof(struct lpfc_pde7)); 1858 bf_set(pde7_type, pde7, LPFC_PDE7_DESCRIPTOR); 1859 1860 pde7->addrHigh = le32_to_cpu(putPaddrHigh(protphysaddr)); 1861 pde7->addrLow = le32_to_cpu(putPaddrLow(protphysaddr)); 1862 1863 protgrp_blks = protgroup_len / 8; 1864 protgrp_bytes = protgrp_blks * blksize; 1865 1866 /* check if this pde is crossing the 4K boundary; if so split */ 1867 if ((pde7->addrLow & 0xfff) + protgroup_len > 0x1000) { 1868 protgroup_remainder = 0x1000 - (pde7->addrLow & 0xfff); 1869 protgroup_offset += protgroup_remainder; 1870 protgrp_blks = protgroup_remainder / 8; 1871 protgrp_bytes = protgrp_blks * blksize; 1872 } else { 1873 protgroup_offset = 0; 1874 curr_prot++; 1875 } 1876 1877 num_bde++; 1878 1879 /* setup BDE's for data blocks associated with DIF data */ 1880 pgdone = 0; 1881 subtotal = 0; /* total bytes processed for current prot grp */ 1882 while (!pgdone) { 1883 /* Check to see if we ran out of space */ 1884 if (num_bde >= phba->cfg_total_seg_cnt) 1885 return num_bde + 1; 1886 1887 if (!sgde) { 1888 lpfc_printf_log(phba, KERN_ERR, LOG_BG, 1889 "9065 BLKGRD:%s Invalid data segment\n", 1890 __func__); 1891 return 0; 1892 } 1893 bpl++; 1894 dataphysaddr = sg_dma_address(sgde) + split_offset; 1895 bpl->addrLow = le32_to_cpu(putPaddrLow(dataphysaddr)); 1896 bpl->addrHigh = le32_to_cpu(putPaddrHigh(dataphysaddr)); 1897 1898 remainder = sg_dma_len(sgde) - split_offset; 1899 1900 if ((subtotal + remainder) <= protgrp_bytes) { 1901 /* we can use this whole buffer */ 1902 bpl->tus.f.bdeSize = remainder; 1903 split_offset = 0; 1904 1905 if ((subtotal + remainder) == protgrp_bytes) 1906 pgdone = 1; 1907 } else { 1908 /* must split this buffer with next prot grp */ 1909 bpl->tus.f.bdeSize = protgrp_bytes - subtotal; 1910 split_offset += bpl->tus.f.bdeSize; 1911 } 1912 1913 subtotal += bpl->tus.f.bdeSize; 1914 1915 if (datadir == DMA_TO_DEVICE) 1916 bpl->tus.f.bdeFlags = BUFF_TYPE_BDE_64; 1917 else 1918 bpl->tus.f.bdeFlags = BUFF_TYPE_BDE_64I; 1919 bpl->tus.w = le32_to_cpu(bpl->tus.w); 1920 1921 num_bde++; 1922 curr_data++; 1923 1924 if (split_offset) 1925 break; 1926 1927 /* Move to the next s/g segment if possible */ 1928 sgde = sg_next(sgde); 1929 1930 } 1931 1932 if (protgroup_offset) { 1933 /* update the reference tag */ 1934 reftag += protgrp_blks; 1935 bpl++; 1936 continue; 1937 } 1938 1939 /* are we done ? */ 1940 if (curr_prot == protcnt) { 1941 alldone = 1; 1942 } else if (curr_prot < protcnt) { 1943 /* advance to next prot buffer */ 1944 sgpe = sg_next(sgpe); 1945 bpl++; 1946 1947 /* update the reference tag */ 1948 reftag += protgrp_blks; 1949 } else { 1950 /* if we're here, we have a bug */ 1951 lpfc_printf_log(phba, KERN_ERR, LOG_BG, 1952 "9054 BLKGRD: bug in %s\n", __func__); 1953 } 1954 1955 } while (!alldone); 1956 out: 1957 1958 return num_bde; 1959 } 1960 1961 /** 1962 * lpfc_bg_setup_sgl - Setup BlockGuard SGL with no protection data 1963 * @phba: The Hba for which this call is being executed. 1964 * @sc: pointer to scsi command we're working on 1965 * @sgl: pointer to buffer list for protection groups 1966 * @datacnt: number of segments of data that have been dma mapped 1967 * 1968 * This function sets up SGL buffer list for protection groups of 1969 * type LPFC_PG_TYPE_NO_DIF 1970 * 1971 * This is usually used when the HBA is instructed to generate 1972 * DIFs and insert them into data stream (or strip DIF from 1973 * incoming data stream) 1974 * 1975 * The buffer list consists of just one protection group described 1976 * below: 1977 * +-------------------------+ 1978 * start of prot group --> | DI_SEED | 1979 * +-------------------------+ 1980 * | Data SGE | 1981 * +-------------------------+ 1982 * |more Data SGE's ... (opt)| 1983 * +-------------------------+ 1984 * 1985 * 1986 * Note: Data s/g buffers have been dma mapped 1987 * 1988 * Returns the number of SGEs added to the SGL. 1989 **/ 1990 static int 1991 lpfc_bg_setup_sgl(struct lpfc_hba *phba, struct scsi_cmnd *sc, 1992 struct sli4_sge *sgl, int datasegcnt) 1993 { 1994 struct scatterlist *sgde = NULL; /* s/g data entry */ 1995 struct sli4_sge_diseed *diseed = NULL; 1996 dma_addr_t physaddr; 1997 int i = 0, num_sge = 0, status; 1998 uint32_t reftag; 1999 uint8_t txop, rxop; 2000 #ifdef CONFIG_SCSI_LPFC_DEBUG_FS 2001 uint32_t rc; 2002 #endif 2003 uint32_t checking = 1; 2004 uint32_t dma_len; 2005 uint32_t dma_offset = 0; 2006 2007 status = lpfc_sc_to_bg_opcodes(phba, sc, &txop, &rxop); 2008 if (status) 2009 goto out; 2010 2011 /* extract some info from the scsi command for pde*/ 2012 reftag = (uint32_t)scsi_get_lba(sc); /* Truncate LBA */ 2013 2014 #ifdef CONFIG_SCSI_LPFC_DEBUG_FS 2015 rc = lpfc_bg_err_inject(phba, sc, &reftag, NULL, 1); 2016 if (rc) { 2017 if (rc & BG_ERR_SWAP) 2018 lpfc_bg_err_opcodes(phba, sc, &txop, &rxop); 2019 if (rc & BG_ERR_CHECK) 2020 checking = 0; 2021 } 2022 #endif 2023 2024 /* setup DISEED with what we have */ 2025 diseed = (struct sli4_sge_diseed *) sgl; 2026 memset(diseed, 0, sizeof(struct sli4_sge_diseed)); 2027 bf_set(lpfc_sli4_sge_type, sgl, LPFC_SGE_TYPE_DISEED); 2028 2029 /* Endianness conversion if necessary */ 2030 diseed->ref_tag = cpu_to_le32(reftag); 2031 diseed->ref_tag_tran = diseed->ref_tag; 2032 2033 /* 2034 * We only need to check the data on READs, for WRITEs 2035 * protection data is automatically generated, not checked. 2036 */ 2037 if (sc->sc_data_direction == DMA_FROM_DEVICE) { 2038 if (lpfc_cmd_protect(sc, LPFC_CHECK_PROTECT_GUARD)) 2039 bf_set(lpfc_sli4_sge_dif_ce, diseed, checking); 2040 else 2041 bf_set(lpfc_sli4_sge_dif_ce, diseed, 0); 2042 2043 if (lpfc_cmd_protect(sc, LPFC_CHECK_PROTECT_REF)) 2044 bf_set(lpfc_sli4_sge_dif_re, diseed, checking); 2045 else 2046 bf_set(lpfc_sli4_sge_dif_re, diseed, 0); 2047 } 2048 2049 /* setup DISEED with the rest of the info */ 2050 bf_set(lpfc_sli4_sge_dif_optx, diseed, txop); 2051 bf_set(lpfc_sli4_sge_dif_oprx, diseed, rxop); 2052 2053 bf_set(lpfc_sli4_sge_dif_ai, diseed, 1); 2054 bf_set(lpfc_sli4_sge_dif_me, diseed, 0); 2055 2056 /* Endianness conversion if necessary for DISEED */ 2057 diseed->word2 = cpu_to_le32(diseed->word2); 2058 diseed->word3 = cpu_to_le32(diseed->word3); 2059 2060 /* advance bpl and increment sge count */ 2061 num_sge++; 2062 sgl++; 2063 2064 /* assumption: caller has already run dma_map_sg on command data */ 2065 scsi_for_each_sg(sc, sgde, datasegcnt, i) { 2066 physaddr = sg_dma_address(sgde); 2067 dma_len = sg_dma_len(sgde); 2068 sgl->addr_lo = cpu_to_le32(putPaddrLow(physaddr)); 2069 sgl->addr_hi = cpu_to_le32(putPaddrHigh(physaddr)); 2070 if ((i + 1) == datasegcnt) 2071 bf_set(lpfc_sli4_sge_last, sgl, 1); 2072 else 2073 bf_set(lpfc_sli4_sge_last, sgl, 0); 2074 bf_set(lpfc_sli4_sge_offset, sgl, dma_offset); 2075 bf_set(lpfc_sli4_sge_type, sgl, LPFC_SGE_TYPE_DATA); 2076 2077 sgl->sge_len = cpu_to_le32(dma_len); 2078 dma_offset += dma_len; 2079 2080 sgl++; 2081 num_sge++; 2082 } 2083 2084 out: 2085 return num_sge; 2086 } 2087 2088 /** 2089 * lpfc_bg_setup_sgl_prot - Setup BlockGuard SGL with protection data 2090 * @phba: The Hba for which this call is being executed. 2091 * @sc: pointer to scsi command we're working on 2092 * @sgl: pointer to buffer list for protection groups 2093 * @datacnt: number of segments of data that have been dma mapped 2094 * @protcnt: number of segment of protection data that have been dma mapped 2095 * 2096 * This function sets up SGL buffer list for protection groups of 2097 * type LPFC_PG_TYPE_DIF 2098 * 2099 * This is usually used when DIFs are in their own buffers, 2100 * separate from the data. The HBA can then by instructed 2101 * to place the DIFs in the outgoing stream. For read operations, 2102 * The HBA could extract the DIFs and place it in DIF buffers. 2103 * 2104 * The buffer list for this type consists of one or more of the 2105 * protection groups described below: 2106 * +-------------------------+ 2107 * start of first prot group --> | DISEED | 2108 * +-------------------------+ 2109 * | DIF (Prot SGE) | 2110 * +-------------------------+ 2111 * | Data SGE | 2112 * +-------------------------+ 2113 * |more Data SGE's ... (opt)| 2114 * +-------------------------+ 2115 * start of new prot group --> | DISEED | 2116 * +-------------------------+ 2117 * | ... | 2118 * +-------------------------+ 2119 * 2120 * Note: It is assumed that both data and protection s/g buffers have been 2121 * mapped for DMA 2122 * 2123 * Returns the number of SGEs added to the SGL. 2124 **/ 2125 static int 2126 lpfc_bg_setup_sgl_prot(struct lpfc_hba *phba, struct scsi_cmnd *sc, 2127 struct sli4_sge *sgl, int datacnt, int protcnt) 2128 { 2129 struct scatterlist *sgde = NULL; /* s/g data entry */ 2130 struct scatterlist *sgpe = NULL; /* s/g prot entry */ 2131 struct sli4_sge_diseed *diseed = NULL; 2132 dma_addr_t dataphysaddr, protphysaddr; 2133 unsigned short curr_data = 0, curr_prot = 0; 2134 unsigned int split_offset; 2135 unsigned int protgroup_len, protgroup_offset = 0, protgroup_remainder; 2136 unsigned int protgrp_blks, protgrp_bytes; 2137 unsigned int remainder, subtotal; 2138 int status; 2139 unsigned char pgdone = 0, alldone = 0; 2140 unsigned blksize; 2141 uint32_t reftag; 2142 uint8_t txop, rxop; 2143 uint32_t dma_len; 2144 #ifdef CONFIG_SCSI_LPFC_DEBUG_FS 2145 uint32_t rc; 2146 #endif 2147 uint32_t checking = 1; 2148 uint32_t dma_offset = 0; 2149 int num_sge = 0; 2150 2151 sgpe = scsi_prot_sglist(sc); 2152 sgde = scsi_sglist(sc); 2153 2154 if (!sgpe || !sgde) { 2155 lpfc_printf_log(phba, KERN_ERR, LOG_FCP, 2156 "9082 Invalid s/g entry: data=0x%p prot=0x%p\n", 2157 sgpe, sgde); 2158 return 0; 2159 } 2160 2161 status = lpfc_sc_to_bg_opcodes(phba, sc, &txop, &rxop); 2162 if (status) 2163 goto out; 2164 2165 /* extract some info from the scsi command */ 2166 blksize = lpfc_cmd_blksize(sc); 2167 reftag = (uint32_t)scsi_get_lba(sc); /* Truncate LBA */ 2168 2169 #ifdef CONFIG_SCSI_LPFC_DEBUG_FS 2170 rc = lpfc_bg_err_inject(phba, sc, &reftag, NULL, 1); 2171 if (rc) { 2172 if (rc & BG_ERR_SWAP) 2173 lpfc_bg_err_opcodes(phba, sc, &txop, &rxop); 2174 if (rc & BG_ERR_CHECK) 2175 checking = 0; 2176 } 2177 #endif 2178 2179 split_offset = 0; 2180 do { 2181 /* Check to see if we ran out of space */ 2182 if (num_sge >= (phba->cfg_total_seg_cnt - 2)) 2183 return num_sge + 3; 2184 2185 /* setup DISEED with what we have */ 2186 diseed = (struct sli4_sge_diseed *) sgl; 2187 memset(diseed, 0, sizeof(struct sli4_sge_diseed)); 2188 bf_set(lpfc_sli4_sge_type, sgl, LPFC_SGE_TYPE_DISEED); 2189 2190 /* Endianness conversion if necessary */ 2191 diseed->ref_tag = cpu_to_le32(reftag); 2192 diseed->ref_tag_tran = diseed->ref_tag; 2193 2194 if (lpfc_cmd_protect(sc, LPFC_CHECK_PROTECT_GUARD)) { 2195 bf_set(lpfc_sli4_sge_dif_ce, diseed, checking); 2196 2197 } else { 2198 bf_set(lpfc_sli4_sge_dif_ce, diseed, 0); 2199 /* 2200 * When in this mode, the hardware will replace 2201 * the guard tag from the host with a 2202 * newly generated good CRC for the wire. 2203 * Switch to raw mode here to avoid this 2204 * behavior. What the host sends gets put on the wire. 2205 */ 2206 if (txop == BG_OP_IN_CRC_OUT_CRC) { 2207 txop = BG_OP_RAW_MODE; 2208 rxop = BG_OP_RAW_MODE; 2209 } 2210 } 2211 2212 2213 if (lpfc_cmd_protect(sc, LPFC_CHECK_PROTECT_REF)) 2214 bf_set(lpfc_sli4_sge_dif_re, diseed, checking); 2215 else 2216 bf_set(lpfc_sli4_sge_dif_re, diseed, 0); 2217 2218 /* setup DISEED with the rest of the info */ 2219 bf_set(lpfc_sli4_sge_dif_optx, diseed, txop); 2220 bf_set(lpfc_sli4_sge_dif_oprx, diseed, rxop); 2221 2222 bf_set(lpfc_sli4_sge_dif_ai, diseed, 1); 2223 bf_set(lpfc_sli4_sge_dif_me, diseed, 0); 2224 2225 /* Endianness conversion if necessary for DISEED */ 2226 diseed->word2 = cpu_to_le32(diseed->word2); 2227 diseed->word3 = cpu_to_le32(diseed->word3); 2228 2229 /* advance sgl and increment bde count */ 2230 num_sge++; 2231 sgl++; 2232 2233 /* setup the first BDE that points to protection buffer */ 2234 protphysaddr = sg_dma_address(sgpe) + protgroup_offset; 2235 protgroup_len = sg_dma_len(sgpe) - protgroup_offset; 2236 2237 /* must be integer multiple of the DIF block length */ 2238 BUG_ON(protgroup_len % 8); 2239 2240 /* Now setup DIF SGE */ 2241 sgl->word2 = 0; 2242 bf_set(lpfc_sli4_sge_type, sgl, LPFC_SGE_TYPE_DIF); 2243 sgl->addr_hi = le32_to_cpu(putPaddrHigh(protphysaddr)); 2244 sgl->addr_lo = le32_to_cpu(putPaddrLow(protphysaddr)); 2245 sgl->word2 = cpu_to_le32(sgl->word2); 2246 2247 protgrp_blks = protgroup_len / 8; 2248 protgrp_bytes = protgrp_blks * blksize; 2249 2250 /* check if DIF SGE is crossing the 4K boundary; if so split */ 2251 if ((sgl->addr_lo & 0xfff) + protgroup_len > 0x1000) { 2252 protgroup_remainder = 0x1000 - (sgl->addr_lo & 0xfff); 2253 protgroup_offset += protgroup_remainder; 2254 protgrp_blks = protgroup_remainder / 8; 2255 protgrp_bytes = protgrp_blks * blksize; 2256 } else { 2257 protgroup_offset = 0; 2258 curr_prot++; 2259 } 2260 2261 num_sge++; 2262 2263 /* setup SGE's for data blocks associated with DIF data */ 2264 pgdone = 0; 2265 subtotal = 0; /* total bytes processed for current prot grp */ 2266 while (!pgdone) { 2267 /* Check to see if we ran out of space */ 2268 if (num_sge >= phba->cfg_total_seg_cnt) 2269 return num_sge + 1; 2270 2271 if (!sgde) { 2272 lpfc_printf_log(phba, KERN_ERR, LOG_BG, 2273 "9086 BLKGRD:%s Invalid data segment\n", 2274 __func__); 2275 return 0; 2276 } 2277 sgl++; 2278 dataphysaddr = sg_dma_address(sgde) + split_offset; 2279 2280 remainder = sg_dma_len(sgde) - split_offset; 2281 2282 if ((subtotal + remainder) <= protgrp_bytes) { 2283 /* we can use this whole buffer */ 2284 dma_len = remainder; 2285 split_offset = 0; 2286 2287 if ((subtotal + remainder) == protgrp_bytes) 2288 pgdone = 1; 2289 } else { 2290 /* must split this buffer with next prot grp */ 2291 dma_len = protgrp_bytes - subtotal; 2292 split_offset += dma_len; 2293 } 2294 2295 subtotal += dma_len; 2296 2297 sgl->addr_lo = cpu_to_le32(putPaddrLow(dataphysaddr)); 2298 sgl->addr_hi = cpu_to_le32(putPaddrHigh(dataphysaddr)); 2299 bf_set(lpfc_sli4_sge_last, sgl, 0); 2300 bf_set(lpfc_sli4_sge_offset, sgl, dma_offset); 2301 bf_set(lpfc_sli4_sge_type, sgl, LPFC_SGE_TYPE_DATA); 2302 2303 sgl->sge_len = cpu_to_le32(dma_len); 2304 dma_offset += dma_len; 2305 2306 num_sge++; 2307 curr_data++; 2308 2309 if (split_offset) 2310 break; 2311 2312 /* Move to the next s/g segment if possible */ 2313 sgde = sg_next(sgde); 2314 } 2315 2316 if (protgroup_offset) { 2317 /* update the reference tag */ 2318 reftag += protgrp_blks; 2319 sgl++; 2320 continue; 2321 } 2322 2323 /* are we done ? */ 2324 if (curr_prot == protcnt) { 2325 bf_set(lpfc_sli4_sge_last, sgl, 1); 2326 alldone = 1; 2327 } else if (curr_prot < protcnt) { 2328 /* advance to next prot buffer */ 2329 sgpe = sg_next(sgpe); 2330 sgl++; 2331 2332 /* update the reference tag */ 2333 reftag += protgrp_blks; 2334 } else { 2335 /* if we're here, we have a bug */ 2336 lpfc_printf_log(phba, KERN_ERR, LOG_BG, 2337 "9085 BLKGRD: bug in %s\n", __func__); 2338 } 2339 2340 } while (!alldone); 2341 2342 out: 2343 2344 return num_sge; 2345 } 2346 2347 /** 2348 * lpfc_prot_group_type - Get prtotection group type of SCSI command 2349 * @phba: The Hba for which this call is being executed. 2350 * @sc: pointer to scsi command we're working on 2351 * 2352 * Given a SCSI command that supports DIF, determine composition of protection 2353 * groups involved in setting up buffer lists 2354 * 2355 * Returns: Protection group type (with or without DIF) 2356 * 2357 **/ 2358 static int 2359 lpfc_prot_group_type(struct lpfc_hba *phba, struct scsi_cmnd *sc) 2360 { 2361 int ret = LPFC_PG_TYPE_INVALID; 2362 unsigned char op = scsi_get_prot_op(sc); 2363 2364 switch (op) { 2365 case SCSI_PROT_READ_STRIP: 2366 case SCSI_PROT_WRITE_INSERT: 2367 ret = LPFC_PG_TYPE_NO_DIF; 2368 break; 2369 case SCSI_PROT_READ_INSERT: 2370 case SCSI_PROT_WRITE_STRIP: 2371 case SCSI_PROT_READ_PASS: 2372 case SCSI_PROT_WRITE_PASS: 2373 ret = LPFC_PG_TYPE_DIF_BUF; 2374 break; 2375 default: 2376 if (phba) 2377 lpfc_printf_log(phba, KERN_ERR, LOG_FCP, 2378 "9021 Unsupported protection op:%d\n", 2379 op); 2380 break; 2381 } 2382 return ret; 2383 } 2384 2385 /** 2386 * lpfc_bg_scsi_adjust_dl - Adjust SCSI data length for BlockGuard 2387 * @phba: The Hba for which this call is being executed. 2388 * @lpfc_cmd: The scsi buffer which is going to be adjusted. 2389 * 2390 * Adjust the data length to account for how much data 2391 * is actually on the wire. 2392 * 2393 * returns the adjusted data length 2394 **/ 2395 static int 2396 lpfc_bg_scsi_adjust_dl(struct lpfc_hba *phba, 2397 struct lpfc_io_buf *lpfc_cmd) 2398 { 2399 struct scsi_cmnd *sc = lpfc_cmd->pCmd; 2400 int fcpdl; 2401 2402 fcpdl = scsi_bufflen(sc); 2403 2404 /* Check if there is protection data on the wire */ 2405 if (sc->sc_data_direction == DMA_FROM_DEVICE) { 2406 /* Read check for protection data */ 2407 if (scsi_get_prot_op(sc) == SCSI_PROT_READ_INSERT) 2408 return fcpdl; 2409 2410 } else { 2411 /* Write check for protection data */ 2412 if (scsi_get_prot_op(sc) == SCSI_PROT_WRITE_STRIP) 2413 return fcpdl; 2414 } 2415 2416 /* 2417 * If we are in DIF Type 1 mode every data block has a 8 byte 2418 * DIF (trailer) attached to it. Must ajust FCP data length 2419 * to account for the protection data. 2420 */ 2421 fcpdl += (fcpdl / lpfc_cmd_blksize(sc)) * 8; 2422 2423 return fcpdl; 2424 } 2425 2426 /** 2427 * lpfc_bg_scsi_prep_dma_buf_s3 - DMA mapping for scsi buffer to SLI3 IF spec 2428 * @phba: The Hba for which this call is being executed. 2429 * @lpfc_cmd: The scsi buffer which is going to be prep'ed. 2430 * 2431 * This is the protection/DIF aware version of 2432 * lpfc_scsi_prep_dma_buf(). It may be a good idea to combine the 2433 * two functions eventually, but for now, it's here 2434 **/ 2435 static int 2436 lpfc_bg_scsi_prep_dma_buf_s3(struct lpfc_hba *phba, 2437 struct lpfc_io_buf *lpfc_cmd) 2438 { 2439 struct scsi_cmnd *scsi_cmnd = lpfc_cmd->pCmd; 2440 struct fcp_cmnd *fcp_cmnd = lpfc_cmd->fcp_cmnd; 2441 struct ulp_bde64 *bpl = (struct ulp_bde64 *)lpfc_cmd->dma_sgl; 2442 IOCB_t *iocb_cmd = &lpfc_cmd->cur_iocbq.iocb; 2443 uint32_t num_bde = 0; 2444 int datasegcnt, protsegcnt, datadir = scsi_cmnd->sc_data_direction; 2445 int prot_group_type = 0; 2446 int fcpdl; 2447 struct lpfc_vport *vport = phba->pport; 2448 2449 /* 2450 * Start the lpfc command prep by bumping the bpl beyond fcp_cmnd 2451 * fcp_rsp regions to the first data bde entry 2452 */ 2453 bpl += 2; 2454 if (scsi_sg_count(scsi_cmnd)) { 2455 /* 2456 * The driver stores the segment count returned from pci_map_sg 2457 * because this a count of dma-mappings used to map the use_sg 2458 * pages. They are not guaranteed to be the same for those 2459 * architectures that implement an IOMMU. 2460 */ 2461 datasegcnt = dma_map_sg(&phba->pcidev->dev, 2462 scsi_sglist(scsi_cmnd), 2463 scsi_sg_count(scsi_cmnd), datadir); 2464 if (unlikely(!datasegcnt)) 2465 return 1; 2466 2467 lpfc_cmd->seg_cnt = datasegcnt; 2468 2469 /* First check if data segment count from SCSI Layer is good */ 2470 if (lpfc_cmd->seg_cnt > phba->cfg_sg_seg_cnt) 2471 goto err; 2472 2473 prot_group_type = lpfc_prot_group_type(phba, scsi_cmnd); 2474 2475 switch (prot_group_type) { 2476 case LPFC_PG_TYPE_NO_DIF: 2477 2478 /* Here we need to add a PDE5 and PDE6 to the count */ 2479 if ((lpfc_cmd->seg_cnt + 2) > phba->cfg_total_seg_cnt) 2480 goto err; 2481 2482 num_bde = lpfc_bg_setup_bpl(phba, scsi_cmnd, bpl, 2483 datasegcnt); 2484 /* we should have 2 or more entries in buffer list */ 2485 if (num_bde < 2) 2486 goto err; 2487 break; 2488 2489 case LPFC_PG_TYPE_DIF_BUF: 2490 /* 2491 * This type indicates that protection buffers are 2492 * passed to the driver, so that needs to be prepared 2493 * for DMA 2494 */ 2495 protsegcnt = dma_map_sg(&phba->pcidev->dev, 2496 scsi_prot_sglist(scsi_cmnd), 2497 scsi_prot_sg_count(scsi_cmnd), datadir); 2498 if (unlikely(!protsegcnt)) { 2499 scsi_dma_unmap(scsi_cmnd); 2500 return 1; 2501 } 2502 2503 lpfc_cmd->prot_seg_cnt = protsegcnt; 2504 2505 /* 2506 * There is a minimun of 4 BPLs used for every 2507 * protection data segment. 2508 */ 2509 if ((lpfc_cmd->prot_seg_cnt * 4) > 2510 (phba->cfg_total_seg_cnt - 2)) 2511 goto err; 2512 2513 num_bde = lpfc_bg_setup_bpl_prot(phba, scsi_cmnd, bpl, 2514 datasegcnt, protsegcnt); 2515 /* we should have 3 or more entries in buffer list */ 2516 if ((num_bde < 3) || 2517 (num_bde > phba->cfg_total_seg_cnt)) 2518 goto err; 2519 break; 2520 2521 case LPFC_PG_TYPE_INVALID: 2522 default: 2523 scsi_dma_unmap(scsi_cmnd); 2524 lpfc_cmd->seg_cnt = 0; 2525 2526 lpfc_printf_log(phba, KERN_ERR, LOG_FCP, 2527 "9022 Unexpected protection group %i\n", 2528 prot_group_type); 2529 return 1; 2530 } 2531 } 2532 2533 /* 2534 * Finish initializing those IOCB fields that are dependent on the 2535 * scsi_cmnd request_buffer. Note that the bdeSize is explicitly 2536 * reinitialized since all iocb memory resources are used many times 2537 * for transmit, receive, and continuation bpl's. 2538 */ 2539 iocb_cmd->un.fcpi64.bdl.bdeSize = (2 * sizeof(struct ulp_bde64)); 2540 iocb_cmd->un.fcpi64.bdl.bdeSize += (num_bde * sizeof(struct ulp_bde64)); 2541 iocb_cmd->ulpBdeCount = 1; 2542 iocb_cmd->ulpLe = 1; 2543 2544 fcpdl = lpfc_bg_scsi_adjust_dl(phba, lpfc_cmd); 2545 fcp_cmnd->fcpDl = be32_to_cpu(fcpdl); 2546 2547 /* 2548 * Due to difference in data length between DIF/non-DIF paths, 2549 * we need to set word 4 of IOCB here 2550 */ 2551 iocb_cmd->un.fcpi.fcpi_parm = fcpdl; 2552 2553 /* 2554 * For First burst, we may need to adjust the initial transfer 2555 * length for DIF 2556 */ 2557 if (iocb_cmd->un.fcpi.fcpi_XRdy && 2558 (fcpdl < vport->cfg_first_burst_size)) 2559 iocb_cmd->un.fcpi.fcpi_XRdy = fcpdl; 2560 2561 return 0; 2562 err: 2563 if (lpfc_cmd->seg_cnt) 2564 scsi_dma_unmap(scsi_cmnd); 2565 if (lpfc_cmd->prot_seg_cnt) 2566 dma_unmap_sg(&phba->pcidev->dev, scsi_prot_sglist(scsi_cmnd), 2567 scsi_prot_sg_count(scsi_cmnd), 2568 scsi_cmnd->sc_data_direction); 2569 2570 lpfc_printf_log(phba, KERN_ERR, LOG_FCP, 2571 "9023 Cannot setup S/G List for HBA" 2572 "IO segs %d/%d BPL %d SCSI %d: %d %d\n", 2573 lpfc_cmd->seg_cnt, lpfc_cmd->prot_seg_cnt, 2574 phba->cfg_total_seg_cnt, phba->cfg_sg_seg_cnt, 2575 prot_group_type, num_bde); 2576 2577 lpfc_cmd->seg_cnt = 0; 2578 lpfc_cmd->prot_seg_cnt = 0; 2579 return 1; 2580 } 2581 2582 /* 2583 * This function calcuates the T10 DIF guard tag 2584 * on the specified data using a CRC algorithmn 2585 * using crc_t10dif. 2586 */ 2587 static uint16_t 2588 lpfc_bg_crc(uint8_t *data, int count) 2589 { 2590 uint16_t crc = 0; 2591 uint16_t x; 2592 2593 crc = crc_t10dif(data, count); 2594 x = cpu_to_be16(crc); 2595 return x; 2596 } 2597 2598 /* 2599 * This function calcuates the T10 DIF guard tag 2600 * on the specified data using a CSUM algorithmn 2601 * using ip_compute_csum. 2602 */ 2603 static uint16_t 2604 lpfc_bg_csum(uint8_t *data, int count) 2605 { 2606 uint16_t ret; 2607 2608 ret = ip_compute_csum(data, count); 2609 return ret; 2610 } 2611 2612 /* 2613 * This function examines the protection data to try to determine 2614 * what type of T10-DIF error occurred. 2615 */ 2616 static void 2617 lpfc_calc_bg_err(struct lpfc_hba *phba, struct lpfc_io_buf *lpfc_cmd) 2618 { 2619 struct scatterlist *sgpe; /* s/g prot entry */ 2620 struct scatterlist *sgde; /* s/g data entry */ 2621 struct scsi_cmnd *cmd = lpfc_cmd->pCmd; 2622 struct scsi_dif_tuple *src = NULL; 2623 uint8_t *data_src = NULL; 2624 uint16_t guard_tag; 2625 uint16_t start_app_tag, app_tag; 2626 uint32_t start_ref_tag, ref_tag; 2627 int prot, protsegcnt; 2628 int err_type, len, data_len; 2629 int chk_ref, chk_app, chk_guard; 2630 uint16_t sum; 2631 unsigned blksize; 2632 2633 err_type = BGS_GUARD_ERR_MASK; 2634 sum = 0; 2635 guard_tag = 0; 2636 2637 /* First check to see if there is protection data to examine */ 2638 prot = scsi_get_prot_op(cmd); 2639 if ((prot == SCSI_PROT_READ_STRIP) || 2640 (prot == SCSI_PROT_WRITE_INSERT) || 2641 (prot == SCSI_PROT_NORMAL)) 2642 goto out; 2643 2644 /* Currently the driver just supports ref_tag and guard_tag checking */ 2645 chk_ref = 1; 2646 chk_app = 0; 2647 chk_guard = 0; 2648 2649 /* Setup a ptr to the protection data provided by the SCSI host */ 2650 sgpe = scsi_prot_sglist(cmd); 2651 protsegcnt = lpfc_cmd->prot_seg_cnt; 2652 2653 if (sgpe && protsegcnt) { 2654 2655 /* 2656 * We will only try to verify guard tag if the segment 2657 * data length is a multiple of the blksize. 2658 */ 2659 sgde = scsi_sglist(cmd); 2660 blksize = lpfc_cmd_blksize(cmd); 2661 data_src = (uint8_t *)sg_virt(sgde); 2662 data_len = sgde->length; 2663 if ((data_len & (blksize - 1)) == 0) 2664 chk_guard = 1; 2665 2666 src = (struct scsi_dif_tuple *)sg_virt(sgpe); 2667 start_ref_tag = (uint32_t)scsi_get_lba(cmd); /* Truncate LBA */ 2668 start_app_tag = src->app_tag; 2669 len = sgpe->length; 2670 while (src && protsegcnt) { 2671 while (len) { 2672 2673 /* 2674 * First check to see if a protection data 2675 * check is valid 2676 */ 2677 if ((src->ref_tag == T10_PI_REF_ESCAPE) || 2678 (src->app_tag == T10_PI_APP_ESCAPE)) { 2679 start_ref_tag++; 2680 goto skipit; 2681 } 2682 2683 /* First Guard Tag checking */ 2684 if (chk_guard) { 2685 guard_tag = src->guard_tag; 2686 if (lpfc_cmd_guard_csum(cmd)) 2687 sum = lpfc_bg_csum(data_src, 2688 blksize); 2689 else 2690 sum = lpfc_bg_crc(data_src, 2691 blksize); 2692 if ((guard_tag != sum)) { 2693 err_type = BGS_GUARD_ERR_MASK; 2694 goto out; 2695 } 2696 } 2697 2698 /* Reference Tag checking */ 2699 ref_tag = be32_to_cpu(src->ref_tag); 2700 if (chk_ref && (ref_tag != start_ref_tag)) { 2701 err_type = BGS_REFTAG_ERR_MASK; 2702 goto out; 2703 } 2704 start_ref_tag++; 2705 2706 /* App Tag checking */ 2707 app_tag = src->app_tag; 2708 if (chk_app && (app_tag != start_app_tag)) { 2709 err_type = BGS_APPTAG_ERR_MASK; 2710 goto out; 2711 } 2712 skipit: 2713 len -= sizeof(struct scsi_dif_tuple); 2714 if (len < 0) 2715 len = 0; 2716 src++; 2717 2718 data_src += blksize; 2719 data_len -= blksize; 2720 2721 /* 2722 * Are we at the end of the Data segment? 2723 * The data segment is only used for Guard 2724 * tag checking. 2725 */ 2726 if (chk_guard && (data_len == 0)) { 2727 chk_guard = 0; 2728 sgde = sg_next(sgde); 2729 if (!sgde) 2730 goto out; 2731 2732 data_src = (uint8_t *)sg_virt(sgde); 2733 data_len = sgde->length; 2734 if ((data_len & (blksize - 1)) == 0) 2735 chk_guard = 1; 2736 } 2737 } 2738 2739 /* Goto the next Protection data segment */ 2740 sgpe = sg_next(sgpe); 2741 if (sgpe) { 2742 src = (struct scsi_dif_tuple *)sg_virt(sgpe); 2743 len = sgpe->length; 2744 } else { 2745 src = NULL; 2746 } 2747 protsegcnt--; 2748 } 2749 } 2750 out: 2751 if (err_type == BGS_GUARD_ERR_MASK) { 2752 scsi_build_sense_buffer(1, cmd->sense_buffer, ILLEGAL_REQUEST, 2753 0x10, 0x1); 2754 cmd->result = DRIVER_SENSE << 24 | DID_ABORT << 16 | 2755 SAM_STAT_CHECK_CONDITION; 2756 phba->bg_guard_err_cnt++; 2757 lpfc_printf_log(phba, KERN_WARNING, LOG_FCP | LOG_BG, 2758 "9069 BLKGRD: LBA %lx grd_tag error %x != %x\n", 2759 (unsigned long)scsi_get_lba(cmd), 2760 sum, guard_tag); 2761 2762 } else if (err_type == BGS_REFTAG_ERR_MASK) { 2763 scsi_build_sense_buffer(1, cmd->sense_buffer, ILLEGAL_REQUEST, 2764 0x10, 0x3); 2765 cmd->result = DRIVER_SENSE << 24 | DID_ABORT << 16 | 2766 SAM_STAT_CHECK_CONDITION; 2767 2768 phba->bg_reftag_err_cnt++; 2769 lpfc_printf_log(phba, KERN_WARNING, LOG_FCP | LOG_BG, 2770 "9066 BLKGRD: LBA %lx ref_tag error %x != %x\n", 2771 (unsigned long)scsi_get_lba(cmd), 2772 ref_tag, start_ref_tag); 2773 2774 } else if (err_type == BGS_APPTAG_ERR_MASK) { 2775 scsi_build_sense_buffer(1, cmd->sense_buffer, ILLEGAL_REQUEST, 2776 0x10, 0x2); 2777 cmd->result = DRIVER_SENSE << 24 | DID_ABORT << 16 | 2778 SAM_STAT_CHECK_CONDITION; 2779 2780 phba->bg_apptag_err_cnt++; 2781 lpfc_printf_log(phba, KERN_WARNING, LOG_FCP | LOG_BG, 2782 "9041 BLKGRD: LBA %lx app_tag error %x != %x\n", 2783 (unsigned long)scsi_get_lba(cmd), 2784 app_tag, start_app_tag); 2785 } 2786 } 2787 2788 2789 /* 2790 * This function checks for BlockGuard errors detected by 2791 * the HBA. In case of errors, the ASC/ASCQ fields in the 2792 * sense buffer will be set accordingly, paired with 2793 * ILLEGAL_REQUEST to signal to the kernel that the HBA 2794 * detected corruption. 2795 * 2796 * Returns: 2797 * 0 - No error found 2798 * 1 - BlockGuard error found 2799 * -1 - Internal error (bad profile, ...etc) 2800 */ 2801 static int 2802 lpfc_parse_bg_err(struct lpfc_hba *phba, struct lpfc_io_buf *lpfc_cmd, 2803 struct lpfc_iocbq *pIocbOut) 2804 { 2805 struct scsi_cmnd *cmd = lpfc_cmd->pCmd; 2806 struct sli3_bg_fields *bgf = &pIocbOut->iocb.unsli3.sli3_bg; 2807 int ret = 0; 2808 uint32_t bghm = bgf->bghm; 2809 uint32_t bgstat = bgf->bgstat; 2810 uint64_t failing_sector = 0; 2811 2812 spin_lock(&_dump_buf_lock); 2813 if (!_dump_buf_done) { 2814 lpfc_printf_log(phba, KERN_ERR, LOG_BG, "9070 BLKGRD: Saving" 2815 " Data for %u blocks to debugfs\n", 2816 (cmd->cmnd[7] << 8 | cmd->cmnd[8])); 2817 lpfc_debug_save_data(phba, cmd); 2818 2819 /* If we have a prot sgl, save the DIF buffer */ 2820 if (lpfc_prot_group_type(phba, cmd) == 2821 LPFC_PG_TYPE_DIF_BUF) { 2822 lpfc_printf_log(phba, KERN_ERR, LOG_BG, "9071 BLKGRD: " 2823 "Saving DIF for %u blocks to debugfs\n", 2824 (cmd->cmnd[7] << 8 | cmd->cmnd[8])); 2825 lpfc_debug_save_dif(phba, cmd); 2826 } 2827 2828 _dump_buf_done = 1; 2829 } 2830 spin_unlock(&_dump_buf_lock); 2831 2832 if (lpfc_bgs_get_invalid_prof(bgstat)) { 2833 cmd->result = DID_ERROR << 16; 2834 lpfc_printf_log(phba, KERN_WARNING, LOG_FCP | LOG_BG, 2835 "9072 BLKGRD: Invalid BG Profile in cmd" 2836 " 0x%x lba 0x%llx blk cnt 0x%x " 2837 "bgstat=x%x bghm=x%x\n", cmd->cmnd[0], 2838 (unsigned long long)scsi_get_lba(cmd), 2839 blk_rq_sectors(cmd->request), bgstat, bghm); 2840 ret = (-1); 2841 goto out; 2842 } 2843 2844 if (lpfc_bgs_get_uninit_dif_block(bgstat)) { 2845 cmd->result = DID_ERROR << 16; 2846 lpfc_printf_log(phba, KERN_WARNING, LOG_FCP | LOG_BG, 2847 "9073 BLKGRD: Invalid BG PDIF Block in cmd" 2848 " 0x%x lba 0x%llx blk cnt 0x%x " 2849 "bgstat=x%x bghm=x%x\n", cmd->cmnd[0], 2850 (unsigned long long)scsi_get_lba(cmd), 2851 blk_rq_sectors(cmd->request), bgstat, bghm); 2852 ret = (-1); 2853 goto out; 2854 } 2855 2856 if (lpfc_bgs_get_guard_err(bgstat)) { 2857 ret = 1; 2858 2859 scsi_build_sense_buffer(1, cmd->sense_buffer, ILLEGAL_REQUEST, 2860 0x10, 0x1); 2861 cmd->result = DRIVER_SENSE << 24 | DID_ABORT << 16 | 2862 SAM_STAT_CHECK_CONDITION; 2863 phba->bg_guard_err_cnt++; 2864 lpfc_printf_log(phba, KERN_WARNING, LOG_FCP | LOG_BG, 2865 "9055 BLKGRD: Guard Tag error in cmd" 2866 " 0x%x lba 0x%llx blk cnt 0x%x " 2867 "bgstat=x%x bghm=x%x\n", cmd->cmnd[0], 2868 (unsigned long long)scsi_get_lba(cmd), 2869 blk_rq_sectors(cmd->request), bgstat, bghm); 2870 } 2871 2872 if (lpfc_bgs_get_reftag_err(bgstat)) { 2873 ret = 1; 2874 2875 scsi_build_sense_buffer(1, cmd->sense_buffer, ILLEGAL_REQUEST, 2876 0x10, 0x3); 2877 cmd->result = DRIVER_SENSE << 24 | DID_ABORT << 16 | 2878 SAM_STAT_CHECK_CONDITION; 2879 2880 phba->bg_reftag_err_cnt++; 2881 lpfc_printf_log(phba, KERN_WARNING, LOG_FCP | LOG_BG, 2882 "9056 BLKGRD: Ref Tag error in cmd" 2883 " 0x%x lba 0x%llx blk cnt 0x%x " 2884 "bgstat=x%x bghm=x%x\n", cmd->cmnd[0], 2885 (unsigned long long)scsi_get_lba(cmd), 2886 blk_rq_sectors(cmd->request), bgstat, bghm); 2887 } 2888 2889 if (lpfc_bgs_get_apptag_err(bgstat)) { 2890 ret = 1; 2891 2892 scsi_build_sense_buffer(1, cmd->sense_buffer, ILLEGAL_REQUEST, 2893 0x10, 0x2); 2894 cmd->result = DRIVER_SENSE << 24 | DID_ABORT << 16 | 2895 SAM_STAT_CHECK_CONDITION; 2896 2897 phba->bg_apptag_err_cnt++; 2898 lpfc_printf_log(phba, KERN_WARNING, LOG_FCP | LOG_BG, 2899 "9061 BLKGRD: App Tag error in cmd" 2900 " 0x%x lba 0x%llx blk cnt 0x%x " 2901 "bgstat=x%x bghm=x%x\n", cmd->cmnd[0], 2902 (unsigned long long)scsi_get_lba(cmd), 2903 blk_rq_sectors(cmd->request), bgstat, bghm); 2904 } 2905 2906 if (lpfc_bgs_get_hi_water_mark_present(bgstat)) { 2907 /* 2908 * setup sense data descriptor 0 per SPC-4 as an information 2909 * field, and put the failing LBA in it. 2910 * This code assumes there was also a guard/app/ref tag error 2911 * indication. 2912 */ 2913 cmd->sense_buffer[7] = 0xc; /* Additional sense length */ 2914 cmd->sense_buffer[8] = 0; /* Information descriptor type */ 2915 cmd->sense_buffer[9] = 0xa; /* Additional descriptor length */ 2916 cmd->sense_buffer[10] = 0x80; /* Validity bit */ 2917 2918 /* bghm is a "on the wire" FC frame based count */ 2919 switch (scsi_get_prot_op(cmd)) { 2920 case SCSI_PROT_READ_INSERT: 2921 case SCSI_PROT_WRITE_STRIP: 2922 bghm /= cmd->device->sector_size; 2923 break; 2924 case SCSI_PROT_READ_STRIP: 2925 case SCSI_PROT_WRITE_INSERT: 2926 case SCSI_PROT_READ_PASS: 2927 case SCSI_PROT_WRITE_PASS: 2928 bghm /= (cmd->device->sector_size + 2929 sizeof(struct scsi_dif_tuple)); 2930 break; 2931 } 2932 2933 failing_sector = scsi_get_lba(cmd); 2934 failing_sector += bghm; 2935 2936 /* Descriptor Information */ 2937 put_unaligned_be64(failing_sector, &cmd->sense_buffer[12]); 2938 } 2939 2940 if (!ret) { 2941 /* No error was reported - problem in FW? */ 2942 lpfc_printf_log(phba, KERN_WARNING, LOG_FCP | LOG_BG, 2943 "9057 BLKGRD: Unknown error in cmd" 2944 " 0x%x lba 0x%llx blk cnt 0x%x " 2945 "bgstat=x%x bghm=x%x\n", cmd->cmnd[0], 2946 (unsigned long long)scsi_get_lba(cmd), 2947 blk_rq_sectors(cmd->request), bgstat, bghm); 2948 2949 /* Calcuate what type of error it was */ 2950 lpfc_calc_bg_err(phba, lpfc_cmd); 2951 } 2952 out: 2953 return ret; 2954 } 2955 2956 /** 2957 * lpfc_scsi_prep_dma_buf_s4 - DMA mapping for scsi buffer to SLI4 IF spec 2958 * @phba: The Hba for which this call is being executed. 2959 * @lpfc_cmd: The scsi buffer which is going to be mapped. 2960 * 2961 * This routine does the pci dma mapping for scatter-gather list of scsi cmnd 2962 * field of @lpfc_cmd for device with SLI-4 interface spec. 2963 * 2964 * Return codes: 2965 * 1 - Error 2966 * 0 - Success 2967 **/ 2968 static int 2969 lpfc_scsi_prep_dma_buf_s4(struct lpfc_hba *phba, struct lpfc_io_buf *lpfc_cmd) 2970 { 2971 struct scsi_cmnd *scsi_cmnd = lpfc_cmd->pCmd; 2972 struct scatterlist *sgel = NULL; 2973 struct fcp_cmnd *fcp_cmnd = lpfc_cmd->fcp_cmnd; 2974 struct sli4_sge *sgl = (struct sli4_sge *)lpfc_cmd->dma_sgl; 2975 struct sli4_sge *first_data_sgl; 2976 IOCB_t *iocb_cmd = &lpfc_cmd->cur_iocbq.iocb; 2977 dma_addr_t physaddr; 2978 uint32_t num_bde = 0; 2979 uint32_t dma_len; 2980 uint32_t dma_offset = 0; 2981 int nseg; 2982 struct ulp_bde64 *bde; 2983 2984 /* 2985 * There are three possibilities here - use scatter-gather segment, use 2986 * the single mapping, or neither. Start the lpfc command prep by 2987 * bumping the bpl beyond the fcp_cmnd and fcp_rsp regions to the first 2988 * data bde entry. 2989 */ 2990 if (scsi_sg_count(scsi_cmnd)) { 2991 /* 2992 * The driver stores the segment count returned from pci_map_sg 2993 * because this a count of dma-mappings used to map the use_sg 2994 * pages. They are not guaranteed to be the same for those 2995 * architectures that implement an IOMMU. 2996 */ 2997 2998 nseg = scsi_dma_map(scsi_cmnd); 2999 if (unlikely(nseg <= 0)) 3000 return 1; 3001 sgl += 1; 3002 /* clear the last flag in the fcp_rsp map entry */ 3003 sgl->word2 = le32_to_cpu(sgl->word2); 3004 bf_set(lpfc_sli4_sge_last, sgl, 0); 3005 sgl->word2 = cpu_to_le32(sgl->word2); 3006 sgl += 1; 3007 first_data_sgl = sgl; 3008 lpfc_cmd->seg_cnt = nseg; 3009 if (lpfc_cmd->seg_cnt > phba->cfg_sg_seg_cnt) { 3010 lpfc_printf_log(phba, KERN_ERR, LOG_BG, "9074 BLKGRD:" 3011 " %s: Too many sg segments from " 3012 "dma_map_sg. Config %d, seg_cnt %d\n", 3013 __func__, phba->cfg_sg_seg_cnt, 3014 lpfc_cmd->seg_cnt); 3015 lpfc_cmd->seg_cnt = 0; 3016 scsi_dma_unmap(scsi_cmnd); 3017 return 1; 3018 } 3019 3020 /* 3021 * The driver established a maximum scatter-gather segment count 3022 * during probe that limits the number of sg elements in any 3023 * single scsi command. Just run through the seg_cnt and format 3024 * the sge's. 3025 * When using SLI-3 the driver will try to fit all the BDEs into 3026 * the IOCB. If it can't then the BDEs get added to a BPL as it 3027 * does for SLI-2 mode. 3028 */ 3029 scsi_for_each_sg(scsi_cmnd, sgel, nseg, num_bde) { 3030 physaddr = sg_dma_address(sgel); 3031 dma_len = sg_dma_len(sgel); 3032 sgl->addr_lo = cpu_to_le32(putPaddrLow(physaddr)); 3033 sgl->addr_hi = cpu_to_le32(putPaddrHigh(physaddr)); 3034 sgl->word2 = le32_to_cpu(sgl->word2); 3035 if ((num_bde + 1) == nseg) 3036 bf_set(lpfc_sli4_sge_last, sgl, 1); 3037 else 3038 bf_set(lpfc_sli4_sge_last, sgl, 0); 3039 bf_set(lpfc_sli4_sge_offset, sgl, dma_offset); 3040 bf_set(lpfc_sli4_sge_type, sgl, LPFC_SGE_TYPE_DATA); 3041 sgl->word2 = cpu_to_le32(sgl->word2); 3042 sgl->sge_len = cpu_to_le32(dma_len); 3043 dma_offset += dma_len; 3044 sgl++; 3045 } 3046 /* 3047 * Setup the first Payload BDE. For FCoE we just key off 3048 * Performance Hints, for FC we use lpfc_enable_pbde. 3049 * We populate words 13-15 of IOCB/WQE. 3050 */ 3051 if ((phba->sli3_options & LPFC_SLI4_PERFH_ENABLED) || 3052 phba->cfg_enable_pbde) { 3053 bde = (struct ulp_bde64 *) 3054 &(iocb_cmd->unsli3.sli3Words[5]); 3055 bde->addrLow = first_data_sgl->addr_lo; 3056 bde->addrHigh = first_data_sgl->addr_hi; 3057 bde->tus.f.bdeSize = 3058 le32_to_cpu(first_data_sgl->sge_len); 3059 bde->tus.f.bdeFlags = BUFF_TYPE_BDE_64; 3060 bde->tus.w = cpu_to_le32(bde->tus.w); 3061 } 3062 } else { 3063 sgl += 1; 3064 /* clear the last flag in the fcp_rsp map entry */ 3065 sgl->word2 = le32_to_cpu(sgl->word2); 3066 bf_set(lpfc_sli4_sge_last, sgl, 1); 3067 sgl->word2 = cpu_to_le32(sgl->word2); 3068 3069 if ((phba->sli3_options & LPFC_SLI4_PERFH_ENABLED) || 3070 phba->cfg_enable_pbde) { 3071 bde = (struct ulp_bde64 *) 3072 &(iocb_cmd->unsli3.sli3Words[5]); 3073 memset(bde, 0, (sizeof(uint32_t) * 3)); 3074 } 3075 } 3076 3077 /* 3078 * Finish initializing those IOCB fields that are dependent on the 3079 * scsi_cmnd request_buffer. Note that for SLI-2 the bdeSize is 3080 * explicitly reinitialized. 3081 * all iocb memory resources are reused. 3082 */ 3083 fcp_cmnd->fcpDl = cpu_to_be32(scsi_bufflen(scsi_cmnd)); 3084 3085 /* 3086 * Due to difference in data length between DIF/non-DIF paths, 3087 * we need to set word 4 of IOCB here 3088 */ 3089 iocb_cmd->un.fcpi.fcpi_parm = scsi_bufflen(scsi_cmnd); 3090 3091 /* 3092 * If the OAS driver feature is enabled and the lun is enabled for 3093 * OAS, set the oas iocb related flags. 3094 */ 3095 if ((phba->cfg_fof) && ((struct lpfc_device_data *) 3096 scsi_cmnd->device->hostdata)->oas_enabled) { 3097 lpfc_cmd->cur_iocbq.iocb_flag |= (LPFC_IO_OAS | LPFC_IO_FOF); 3098 lpfc_cmd->cur_iocbq.priority = ((struct lpfc_device_data *) 3099 scsi_cmnd->device->hostdata)->priority; 3100 } 3101 3102 return 0; 3103 } 3104 3105 /** 3106 * lpfc_bg_scsi_prep_dma_buf_s4 - DMA mapping for scsi buffer to SLI4 IF spec 3107 * @phba: The Hba for which this call is being executed. 3108 * @lpfc_cmd: The scsi buffer which is going to be mapped. 3109 * 3110 * This is the protection/DIF aware version of 3111 * lpfc_scsi_prep_dma_buf(). It may be a good idea to combine the 3112 * two functions eventually, but for now, it's here 3113 **/ 3114 static int 3115 lpfc_bg_scsi_prep_dma_buf_s4(struct lpfc_hba *phba, 3116 struct lpfc_io_buf *lpfc_cmd) 3117 { 3118 struct scsi_cmnd *scsi_cmnd = lpfc_cmd->pCmd; 3119 struct fcp_cmnd *fcp_cmnd = lpfc_cmd->fcp_cmnd; 3120 struct sli4_sge *sgl = (struct sli4_sge *)(lpfc_cmd->dma_sgl); 3121 IOCB_t *iocb_cmd = &lpfc_cmd->cur_iocbq.iocb; 3122 uint32_t num_sge = 0; 3123 int datasegcnt, protsegcnt, datadir = scsi_cmnd->sc_data_direction; 3124 int prot_group_type = 0; 3125 int fcpdl; 3126 struct lpfc_vport *vport = phba->pport; 3127 3128 /* 3129 * Start the lpfc command prep by bumping the sgl beyond fcp_cmnd 3130 * fcp_rsp regions to the first data sge entry 3131 */ 3132 if (scsi_sg_count(scsi_cmnd)) { 3133 /* 3134 * The driver stores the segment count returned from pci_map_sg 3135 * because this a count of dma-mappings used to map the use_sg 3136 * pages. They are not guaranteed to be the same for those 3137 * architectures that implement an IOMMU. 3138 */ 3139 datasegcnt = dma_map_sg(&phba->pcidev->dev, 3140 scsi_sglist(scsi_cmnd), 3141 scsi_sg_count(scsi_cmnd), datadir); 3142 if (unlikely(!datasegcnt)) 3143 return 1; 3144 3145 sgl += 1; 3146 /* clear the last flag in the fcp_rsp map entry */ 3147 sgl->word2 = le32_to_cpu(sgl->word2); 3148 bf_set(lpfc_sli4_sge_last, sgl, 0); 3149 sgl->word2 = cpu_to_le32(sgl->word2); 3150 3151 sgl += 1; 3152 lpfc_cmd->seg_cnt = datasegcnt; 3153 3154 /* First check if data segment count from SCSI Layer is good */ 3155 if (lpfc_cmd->seg_cnt > phba->cfg_sg_seg_cnt) 3156 goto err; 3157 3158 prot_group_type = lpfc_prot_group_type(phba, scsi_cmnd); 3159 3160 switch (prot_group_type) { 3161 case LPFC_PG_TYPE_NO_DIF: 3162 /* Here we need to add a DISEED to the count */ 3163 if ((lpfc_cmd->seg_cnt + 1) > phba->cfg_total_seg_cnt) 3164 goto err; 3165 3166 num_sge = lpfc_bg_setup_sgl(phba, scsi_cmnd, sgl, 3167 datasegcnt); 3168 3169 /* we should have 2 or more entries in buffer list */ 3170 if (num_sge < 2) 3171 goto err; 3172 break; 3173 3174 case LPFC_PG_TYPE_DIF_BUF: 3175 /* 3176 * This type indicates that protection buffers are 3177 * passed to the driver, so that needs to be prepared 3178 * for DMA 3179 */ 3180 protsegcnt = dma_map_sg(&phba->pcidev->dev, 3181 scsi_prot_sglist(scsi_cmnd), 3182 scsi_prot_sg_count(scsi_cmnd), datadir); 3183 if (unlikely(!protsegcnt)) { 3184 scsi_dma_unmap(scsi_cmnd); 3185 return 1; 3186 } 3187 3188 lpfc_cmd->prot_seg_cnt = protsegcnt; 3189 /* 3190 * There is a minimun of 3 SGEs used for every 3191 * protection data segment. 3192 */ 3193 if ((lpfc_cmd->prot_seg_cnt * 3) > 3194 (phba->cfg_total_seg_cnt - 2)) 3195 goto err; 3196 3197 num_sge = lpfc_bg_setup_sgl_prot(phba, scsi_cmnd, sgl, 3198 datasegcnt, protsegcnt); 3199 3200 /* we should have 3 or more entries in buffer list */ 3201 if ((num_sge < 3) || 3202 (num_sge > phba->cfg_total_seg_cnt)) 3203 goto err; 3204 break; 3205 3206 case LPFC_PG_TYPE_INVALID: 3207 default: 3208 scsi_dma_unmap(scsi_cmnd); 3209 lpfc_cmd->seg_cnt = 0; 3210 3211 lpfc_printf_log(phba, KERN_ERR, LOG_FCP, 3212 "9083 Unexpected protection group %i\n", 3213 prot_group_type); 3214 return 1; 3215 } 3216 } 3217 3218 switch (scsi_get_prot_op(scsi_cmnd)) { 3219 case SCSI_PROT_WRITE_STRIP: 3220 case SCSI_PROT_READ_STRIP: 3221 lpfc_cmd->cur_iocbq.iocb_flag |= LPFC_IO_DIF_STRIP; 3222 break; 3223 case SCSI_PROT_WRITE_INSERT: 3224 case SCSI_PROT_READ_INSERT: 3225 lpfc_cmd->cur_iocbq.iocb_flag |= LPFC_IO_DIF_INSERT; 3226 break; 3227 case SCSI_PROT_WRITE_PASS: 3228 case SCSI_PROT_READ_PASS: 3229 lpfc_cmd->cur_iocbq.iocb_flag |= LPFC_IO_DIF_PASS; 3230 break; 3231 } 3232 3233 fcpdl = lpfc_bg_scsi_adjust_dl(phba, lpfc_cmd); 3234 fcp_cmnd->fcpDl = be32_to_cpu(fcpdl); 3235 3236 /* 3237 * Due to difference in data length between DIF/non-DIF paths, 3238 * we need to set word 4 of IOCB here 3239 */ 3240 iocb_cmd->un.fcpi.fcpi_parm = fcpdl; 3241 3242 /* 3243 * For First burst, we may need to adjust the initial transfer 3244 * length for DIF 3245 */ 3246 if (iocb_cmd->un.fcpi.fcpi_XRdy && 3247 (fcpdl < vport->cfg_first_burst_size)) 3248 iocb_cmd->un.fcpi.fcpi_XRdy = fcpdl; 3249 3250 /* 3251 * If the OAS driver feature is enabled and the lun is enabled for 3252 * OAS, set the oas iocb related flags. 3253 */ 3254 if ((phba->cfg_fof) && ((struct lpfc_device_data *) 3255 scsi_cmnd->device->hostdata)->oas_enabled) 3256 lpfc_cmd->cur_iocbq.iocb_flag |= (LPFC_IO_OAS | LPFC_IO_FOF); 3257 3258 return 0; 3259 err: 3260 if (lpfc_cmd->seg_cnt) 3261 scsi_dma_unmap(scsi_cmnd); 3262 if (lpfc_cmd->prot_seg_cnt) 3263 dma_unmap_sg(&phba->pcidev->dev, scsi_prot_sglist(scsi_cmnd), 3264 scsi_prot_sg_count(scsi_cmnd), 3265 scsi_cmnd->sc_data_direction); 3266 3267 lpfc_printf_log(phba, KERN_ERR, LOG_FCP, 3268 "9084 Cannot setup S/G List for HBA" 3269 "IO segs %d/%d SGL %d SCSI %d: %d %d\n", 3270 lpfc_cmd->seg_cnt, lpfc_cmd->prot_seg_cnt, 3271 phba->cfg_total_seg_cnt, phba->cfg_sg_seg_cnt, 3272 prot_group_type, num_sge); 3273 3274 lpfc_cmd->seg_cnt = 0; 3275 lpfc_cmd->prot_seg_cnt = 0; 3276 return 1; 3277 } 3278 3279 /** 3280 * lpfc_scsi_prep_dma_buf - Wrapper function for DMA mapping of scsi buffer 3281 * @phba: The Hba for which this call is being executed. 3282 * @lpfc_cmd: The scsi buffer which is going to be mapped. 3283 * 3284 * This routine wraps the actual DMA mapping function pointer from the 3285 * lpfc_hba struct. 3286 * 3287 * Return codes: 3288 * 1 - Error 3289 * 0 - Success 3290 **/ 3291 static inline int 3292 lpfc_scsi_prep_dma_buf(struct lpfc_hba *phba, struct lpfc_io_buf *lpfc_cmd) 3293 { 3294 return phba->lpfc_scsi_prep_dma_buf(phba, lpfc_cmd); 3295 } 3296 3297 /** 3298 * lpfc_bg_scsi_prep_dma_buf - Wrapper function for DMA mapping of scsi buffer 3299 * using BlockGuard. 3300 * @phba: The Hba for which this call is being executed. 3301 * @lpfc_cmd: The scsi buffer which is going to be mapped. 3302 * 3303 * This routine wraps the actual DMA mapping function pointer from the 3304 * lpfc_hba struct. 3305 * 3306 * Return codes: 3307 * 1 - Error 3308 * 0 - Success 3309 **/ 3310 static inline int 3311 lpfc_bg_scsi_prep_dma_buf(struct lpfc_hba *phba, struct lpfc_io_buf *lpfc_cmd) 3312 { 3313 return phba->lpfc_bg_scsi_prep_dma_buf(phba, lpfc_cmd); 3314 } 3315 3316 /** 3317 * lpfc_send_scsi_error_event - Posts an event when there is SCSI error 3318 * @phba: Pointer to hba context object. 3319 * @vport: Pointer to vport object. 3320 * @lpfc_cmd: Pointer to lpfc scsi command which reported the error. 3321 * @rsp_iocb: Pointer to response iocb object which reported error. 3322 * 3323 * This function posts an event when there is a SCSI command reporting 3324 * error from the scsi device. 3325 **/ 3326 static void 3327 lpfc_send_scsi_error_event(struct lpfc_hba *phba, struct lpfc_vport *vport, 3328 struct lpfc_io_buf *lpfc_cmd, struct lpfc_iocbq *rsp_iocb) { 3329 struct scsi_cmnd *cmnd = lpfc_cmd->pCmd; 3330 struct fcp_rsp *fcprsp = lpfc_cmd->fcp_rsp; 3331 uint32_t resp_info = fcprsp->rspStatus2; 3332 uint32_t scsi_status = fcprsp->rspStatus3; 3333 uint32_t fcpi_parm = rsp_iocb->iocb.un.fcpi.fcpi_parm; 3334 struct lpfc_fast_path_event *fast_path_evt = NULL; 3335 struct lpfc_nodelist *pnode = lpfc_cmd->rdata->pnode; 3336 unsigned long flags; 3337 3338 if (!pnode || !NLP_CHK_NODE_ACT(pnode)) 3339 return; 3340 3341 /* If there is queuefull or busy condition send a scsi event */ 3342 if ((cmnd->result == SAM_STAT_TASK_SET_FULL) || 3343 (cmnd->result == SAM_STAT_BUSY)) { 3344 fast_path_evt = lpfc_alloc_fast_evt(phba); 3345 if (!fast_path_evt) 3346 return; 3347 fast_path_evt->un.scsi_evt.event_type = 3348 FC_REG_SCSI_EVENT; 3349 fast_path_evt->un.scsi_evt.subcategory = 3350 (cmnd->result == SAM_STAT_TASK_SET_FULL) ? 3351 LPFC_EVENT_QFULL : LPFC_EVENT_DEVBSY; 3352 fast_path_evt->un.scsi_evt.lun = cmnd->device->lun; 3353 memcpy(&fast_path_evt->un.scsi_evt.wwpn, 3354 &pnode->nlp_portname, sizeof(struct lpfc_name)); 3355 memcpy(&fast_path_evt->un.scsi_evt.wwnn, 3356 &pnode->nlp_nodename, sizeof(struct lpfc_name)); 3357 } else if ((resp_info & SNS_LEN_VALID) && fcprsp->rspSnsLen && 3358 ((cmnd->cmnd[0] == READ_10) || (cmnd->cmnd[0] == WRITE_10))) { 3359 fast_path_evt = lpfc_alloc_fast_evt(phba); 3360 if (!fast_path_evt) 3361 return; 3362 fast_path_evt->un.check_cond_evt.scsi_event.event_type = 3363 FC_REG_SCSI_EVENT; 3364 fast_path_evt->un.check_cond_evt.scsi_event.subcategory = 3365 LPFC_EVENT_CHECK_COND; 3366 fast_path_evt->un.check_cond_evt.scsi_event.lun = 3367 cmnd->device->lun; 3368 memcpy(&fast_path_evt->un.check_cond_evt.scsi_event.wwpn, 3369 &pnode->nlp_portname, sizeof(struct lpfc_name)); 3370 memcpy(&fast_path_evt->un.check_cond_evt.scsi_event.wwnn, 3371 &pnode->nlp_nodename, sizeof(struct lpfc_name)); 3372 fast_path_evt->un.check_cond_evt.sense_key = 3373 cmnd->sense_buffer[2] & 0xf; 3374 fast_path_evt->un.check_cond_evt.asc = cmnd->sense_buffer[12]; 3375 fast_path_evt->un.check_cond_evt.ascq = cmnd->sense_buffer[13]; 3376 } else if ((cmnd->sc_data_direction == DMA_FROM_DEVICE) && 3377 fcpi_parm && 3378 ((be32_to_cpu(fcprsp->rspResId) != fcpi_parm) || 3379 ((scsi_status == SAM_STAT_GOOD) && 3380 !(resp_info & (RESID_UNDER | RESID_OVER))))) { 3381 /* 3382 * If status is good or resid does not match with fcp_param and 3383 * there is valid fcpi_parm, then there is a read_check error 3384 */ 3385 fast_path_evt = lpfc_alloc_fast_evt(phba); 3386 if (!fast_path_evt) 3387 return; 3388 fast_path_evt->un.read_check_error.header.event_type = 3389 FC_REG_FABRIC_EVENT; 3390 fast_path_evt->un.read_check_error.header.subcategory = 3391 LPFC_EVENT_FCPRDCHKERR; 3392 memcpy(&fast_path_evt->un.read_check_error.header.wwpn, 3393 &pnode->nlp_portname, sizeof(struct lpfc_name)); 3394 memcpy(&fast_path_evt->un.read_check_error.header.wwnn, 3395 &pnode->nlp_nodename, sizeof(struct lpfc_name)); 3396 fast_path_evt->un.read_check_error.lun = cmnd->device->lun; 3397 fast_path_evt->un.read_check_error.opcode = cmnd->cmnd[0]; 3398 fast_path_evt->un.read_check_error.fcpiparam = 3399 fcpi_parm; 3400 } else 3401 return; 3402 3403 fast_path_evt->vport = vport; 3404 spin_lock_irqsave(&phba->hbalock, flags); 3405 list_add_tail(&fast_path_evt->work_evt.evt_listp, &phba->work_list); 3406 spin_unlock_irqrestore(&phba->hbalock, flags); 3407 lpfc_worker_wake_up(phba); 3408 return; 3409 } 3410 3411 /** 3412 * lpfc_scsi_unprep_dma_buf - Un-map DMA mapping of SG-list for dev 3413 * @phba: The HBA for which this call is being executed. 3414 * @psb: The scsi buffer which is going to be un-mapped. 3415 * 3416 * This routine does DMA un-mapping of scatter gather list of scsi command 3417 * field of @lpfc_cmd for device with SLI-3 interface spec. 3418 **/ 3419 static void 3420 lpfc_scsi_unprep_dma_buf(struct lpfc_hba *phba, struct lpfc_io_buf *psb) 3421 { 3422 /* 3423 * There are only two special cases to consider. (1) the scsi command 3424 * requested scatter-gather usage or (2) the scsi command allocated 3425 * a request buffer, but did not request use_sg. There is a third 3426 * case, but it does not require resource deallocation. 3427 */ 3428 if (psb->seg_cnt > 0) 3429 scsi_dma_unmap(psb->pCmd); 3430 if (psb->prot_seg_cnt > 0) 3431 dma_unmap_sg(&phba->pcidev->dev, scsi_prot_sglist(psb->pCmd), 3432 scsi_prot_sg_count(psb->pCmd), 3433 psb->pCmd->sc_data_direction); 3434 } 3435 3436 /** 3437 * lpfc_handler_fcp_err - FCP response handler 3438 * @vport: The virtual port for which this call is being executed. 3439 * @lpfc_cmd: Pointer to lpfc_io_buf data structure. 3440 * @rsp_iocb: The response IOCB which contains FCP error. 3441 * 3442 * This routine is called to process response IOCB with status field 3443 * IOSTAT_FCP_RSP_ERROR. This routine sets result field of scsi command 3444 * based upon SCSI and FCP error. 3445 **/ 3446 static void 3447 lpfc_handle_fcp_err(struct lpfc_vport *vport, struct lpfc_io_buf *lpfc_cmd, 3448 struct lpfc_iocbq *rsp_iocb) 3449 { 3450 struct lpfc_hba *phba = vport->phba; 3451 struct scsi_cmnd *cmnd = lpfc_cmd->pCmd; 3452 struct fcp_cmnd *fcpcmd = lpfc_cmd->fcp_cmnd; 3453 struct fcp_rsp *fcprsp = lpfc_cmd->fcp_rsp; 3454 uint32_t fcpi_parm = rsp_iocb->iocb.un.fcpi.fcpi_parm; 3455 uint32_t resp_info = fcprsp->rspStatus2; 3456 uint32_t scsi_status = fcprsp->rspStatus3; 3457 uint32_t *lp; 3458 uint32_t host_status = DID_OK; 3459 uint32_t rsplen = 0; 3460 uint32_t fcpDl; 3461 uint32_t logit = LOG_FCP | LOG_FCP_ERROR; 3462 3463 3464 /* 3465 * If this is a task management command, there is no 3466 * scsi packet associated with this lpfc_cmd. The driver 3467 * consumes it. 3468 */ 3469 if (fcpcmd->fcpCntl2) { 3470 scsi_status = 0; 3471 goto out; 3472 } 3473 3474 if (resp_info & RSP_LEN_VALID) { 3475 rsplen = be32_to_cpu(fcprsp->rspRspLen); 3476 if (rsplen != 0 && rsplen != 4 && rsplen != 8) { 3477 lpfc_printf_vlog(vport, KERN_ERR, LOG_FCP, 3478 "2719 Invalid response length: " 3479 "tgt x%x lun x%llx cmnd x%x rsplen x%x\n", 3480 cmnd->device->id, 3481 cmnd->device->lun, cmnd->cmnd[0], 3482 rsplen); 3483 host_status = DID_ERROR; 3484 goto out; 3485 } 3486 if (fcprsp->rspInfo3 != RSP_NO_FAILURE) { 3487 lpfc_printf_vlog(vport, KERN_ERR, LOG_FCP, 3488 "2757 Protocol failure detected during " 3489 "processing of FCP I/O op: " 3490 "tgt x%x lun x%llx cmnd x%x rspInfo3 x%x\n", 3491 cmnd->device->id, 3492 cmnd->device->lun, cmnd->cmnd[0], 3493 fcprsp->rspInfo3); 3494 host_status = DID_ERROR; 3495 goto out; 3496 } 3497 } 3498 3499 if ((resp_info & SNS_LEN_VALID) && fcprsp->rspSnsLen) { 3500 uint32_t snslen = be32_to_cpu(fcprsp->rspSnsLen); 3501 if (snslen > SCSI_SENSE_BUFFERSIZE) 3502 snslen = SCSI_SENSE_BUFFERSIZE; 3503 3504 if (resp_info & RSP_LEN_VALID) 3505 rsplen = be32_to_cpu(fcprsp->rspRspLen); 3506 memcpy(cmnd->sense_buffer, &fcprsp->rspInfo0 + rsplen, snslen); 3507 } 3508 lp = (uint32_t *)cmnd->sense_buffer; 3509 3510 /* special handling for under run conditions */ 3511 if (!scsi_status && (resp_info & RESID_UNDER)) { 3512 /* don't log under runs if fcp set... */ 3513 if (vport->cfg_log_verbose & LOG_FCP) 3514 logit = LOG_FCP_ERROR; 3515 /* unless operator says so */ 3516 if (vport->cfg_log_verbose & LOG_FCP_UNDER) 3517 logit = LOG_FCP_UNDER; 3518 } 3519 3520 lpfc_printf_vlog(vport, KERN_WARNING, logit, 3521 "9024 FCP command x%x failed: x%x SNS x%x x%x " 3522 "Data: x%x x%x x%x x%x x%x\n", 3523 cmnd->cmnd[0], scsi_status, 3524 be32_to_cpu(*lp), be32_to_cpu(*(lp + 3)), resp_info, 3525 be32_to_cpu(fcprsp->rspResId), 3526 be32_to_cpu(fcprsp->rspSnsLen), 3527 be32_to_cpu(fcprsp->rspRspLen), 3528 fcprsp->rspInfo3); 3529 3530 scsi_set_resid(cmnd, 0); 3531 fcpDl = be32_to_cpu(fcpcmd->fcpDl); 3532 if (resp_info & RESID_UNDER) { 3533 scsi_set_resid(cmnd, be32_to_cpu(fcprsp->rspResId)); 3534 3535 lpfc_printf_vlog(vport, KERN_INFO, LOG_FCP_UNDER, 3536 "9025 FCP Underrun, expected %d, " 3537 "residual %d Data: x%x x%x x%x\n", 3538 fcpDl, 3539 scsi_get_resid(cmnd), fcpi_parm, cmnd->cmnd[0], 3540 cmnd->underflow); 3541 3542 /* 3543 * If there is an under run, check if under run reported by 3544 * storage array is same as the under run reported by HBA. 3545 * If this is not same, there is a dropped frame. 3546 */ 3547 if (fcpi_parm && (scsi_get_resid(cmnd) != fcpi_parm)) { 3548 lpfc_printf_vlog(vport, KERN_WARNING, 3549 LOG_FCP | LOG_FCP_ERROR, 3550 "9026 FCP Read Check Error " 3551 "and Underrun Data: x%x x%x x%x x%x\n", 3552 fcpDl, 3553 scsi_get_resid(cmnd), fcpi_parm, 3554 cmnd->cmnd[0]); 3555 scsi_set_resid(cmnd, scsi_bufflen(cmnd)); 3556 host_status = DID_ERROR; 3557 } 3558 /* 3559 * The cmnd->underflow is the minimum number of bytes that must 3560 * be transferred for this command. Provided a sense condition 3561 * is not present, make sure the actual amount transferred is at 3562 * least the underflow value or fail. 3563 */ 3564 if (!(resp_info & SNS_LEN_VALID) && 3565 (scsi_status == SAM_STAT_GOOD) && 3566 (scsi_bufflen(cmnd) - scsi_get_resid(cmnd) 3567 < cmnd->underflow)) { 3568 lpfc_printf_vlog(vport, KERN_INFO, LOG_FCP, 3569 "9027 FCP command x%x residual " 3570 "underrun converted to error " 3571 "Data: x%x x%x x%x\n", 3572 cmnd->cmnd[0], scsi_bufflen(cmnd), 3573 scsi_get_resid(cmnd), cmnd->underflow); 3574 host_status = DID_ERROR; 3575 } 3576 } else if (resp_info & RESID_OVER) { 3577 lpfc_printf_vlog(vport, KERN_WARNING, LOG_FCP, 3578 "9028 FCP command x%x residual overrun error. " 3579 "Data: x%x x%x\n", cmnd->cmnd[0], 3580 scsi_bufflen(cmnd), scsi_get_resid(cmnd)); 3581 host_status = DID_ERROR; 3582 3583 /* 3584 * Check SLI validation that all the transfer was actually done 3585 * (fcpi_parm should be zero). Apply check only to reads. 3586 */ 3587 } else if (fcpi_parm) { 3588 lpfc_printf_vlog(vport, KERN_WARNING, LOG_FCP | LOG_FCP_ERROR, 3589 "9029 FCP %s Check Error xri x%x Data: " 3590 "x%x x%x x%x x%x x%x\n", 3591 ((cmnd->sc_data_direction == DMA_FROM_DEVICE) ? 3592 "Read" : "Write"), 3593 ((phba->sli_rev == LPFC_SLI_REV4) ? 3594 lpfc_cmd->cur_iocbq.sli4_xritag : 3595 rsp_iocb->iocb.ulpContext), 3596 fcpDl, be32_to_cpu(fcprsp->rspResId), 3597 fcpi_parm, cmnd->cmnd[0], scsi_status); 3598 3599 /* There is some issue with the LPe12000 that causes it 3600 * to miscalculate the fcpi_parm and falsely trip this 3601 * recovery logic. Detect this case and don't error when true. 3602 */ 3603 if (fcpi_parm > fcpDl) 3604 goto out; 3605 3606 switch (scsi_status) { 3607 case SAM_STAT_GOOD: 3608 case SAM_STAT_CHECK_CONDITION: 3609 /* Fabric dropped a data frame. Fail any successful 3610 * command in which we detected dropped frames. 3611 * A status of good or some check conditions could 3612 * be considered a successful command. 3613 */ 3614 host_status = DID_ERROR; 3615 break; 3616 } 3617 scsi_set_resid(cmnd, scsi_bufflen(cmnd)); 3618 } 3619 3620 out: 3621 cmnd->result = host_status << 16 | scsi_status; 3622 lpfc_send_scsi_error_event(vport->phba, vport, lpfc_cmd, rsp_iocb); 3623 } 3624 3625 /** 3626 * lpfc_scsi_cmd_iocb_cmpl - Scsi cmnd IOCB completion routine 3627 * @phba: The Hba for which this call is being executed. 3628 * @pIocbIn: The command IOCBQ for the scsi cmnd. 3629 * @pIocbOut: The response IOCBQ for the scsi cmnd. 3630 * 3631 * This routine assigns scsi command result by looking into response IOCB 3632 * status field appropriately. This routine handles QUEUE FULL condition as 3633 * well by ramping down device queue depth. 3634 **/ 3635 static void 3636 lpfc_scsi_cmd_iocb_cmpl(struct lpfc_hba *phba, struct lpfc_iocbq *pIocbIn, 3637 struct lpfc_iocbq *pIocbOut) 3638 { 3639 struct lpfc_io_buf *lpfc_cmd = 3640 (struct lpfc_io_buf *) pIocbIn->context1; 3641 struct lpfc_vport *vport = pIocbIn->vport; 3642 struct lpfc_rport_data *rdata = lpfc_cmd->rdata; 3643 struct lpfc_nodelist *pnode = rdata->pnode; 3644 struct scsi_cmnd *cmd; 3645 unsigned long flags; 3646 struct lpfc_fast_path_event *fast_path_evt; 3647 struct Scsi_Host *shost; 3648 int idx; 3649 uint32_t logit = LOG_FCP; 3650 #ifdef CONFIG_SCSI_LPFC_DEBUG_FS 3651 int cpu; 3652 #endif 3653 3654 /* Guard against abort handler being called at same time */ 3655 spin_lock(&lpfc_cmd->buf_lock); 3656 3657 /* Sanity check on return of outstanding command */ 3658 cmd = lpfc_cmd->pCmd; 3659 if (!cmd) { 3660 lpfc_printf_vlog(vport, KERN_ERR, LOG_INIT, 3661 "2621 IO completion: Not an active IO\n"); 3662 spin_unlock(&lpfc_cmd->buf_lock); 3663 return; 3664 } 3665 3666 idx = lpfc_cmd->cur_iocbq.hba_wqidx; 3667 if (phba->sli4_hba.hdwq) 3668 phba->sli4_hba.hdwq[idx].scsi_cstat.io_cmpls++; 3669 3670 #ifdef CONFIG_SCSI_LPFC_DEBUG_FS 3671 if (phba->cpucheck_on & LPFC_CHECK_SCSI_IO) { 3672 cpu = raw_smp_processor_id(); 3673 if (cpu < LPFC_CHECK_CPU_CNT && phba->sli4_hba.hdwq) 3674 phba->sli4_hba.hdwq[idx].cpucheck_cmpl_io[cpu]++; 3675 } 3676 #endif 3677 shost = cmd->device->host; 3678 3679 lpfc_cmd->result = (pIocbOut->iocb.un.ulpWord[4] & IOERR_PARAM_MASK); 3680 lpfc_cmd->status = pIocbOut->iocb.ulpStatus; 3681 /* pick up SLI4 exhange busy status from HBA */ 3682 lpfc_cmd->exch_busy = pIocbOut->iocb_flag & LPFC_EXCHANGE_BUSY; 3683 3684 #ifdef CONFIG_SCSI_LPFC_DEBUG_FS 3685 if (lpfc_cmd->prot_data_type) { 3686 struct scsi_dif_tuple *src = NULL; 3687 3688 src = (struct scsi_dif_tuple *)lpfc_cmd->prot_data_segment; 3689 /* 3690 * Used to restore any changes to protection 3691 * data for error injection. 3692 */ 3693 switch (lpfc_cmd->prot_data_type) { 3694 case LPFC_INJERR_REFTAG: 3695 src->ref_tag = 3696 lpfc_cmd->prot_data; 3697 break; 3698 case LPFC_INJERR_APPTAG: 3699 src->app_tag = 3700 (uint16_t)lpfc_cmd->prot_data; 3701 break; 3702 case LPFC_INJERR_GUARD: 3703 src->guard_tag = 3704 (uint16_t)lpfc_cmd->prot_data; 3705 break; 3706 default: 3707 break; 3708 } 3709 3710 lpfc_cmd->prot_data = 0; 3711 lpfc_cmd->prot_data_type = 0; 3712 lpfc_cmd->prot_data_segment = NULL; 3713 } 3714 #endif 3715 3716 if (lpfc_cmd->status) { 3717 if (lpfc_cmd->status == IOSTAT_LOCAL_REJECT && 3718 (lpfc_cmd->result & IOERR_DRVR_MASK)) 3719 lpfc_cmd->status = IOSTAT_DRIVER_REJECT; 3720 else if (lpfc_cmd->status >= IOSTAT_CNT) 3721 lpfc_cmd->status = IOSTAT_DEFAULT; 3722 if (lpfc_cmd->status == IOSTAT_FCP_RSP_ERROR && 3723 !lpfc_cmd->fcp_rsp->rspStatus3 && 3724 (lpfc_cmd->fcp_rsp->rspStatus2 & RESID_UNDER) && 3725 !(vport->cfg_log_verbose & LOG_FCP_UNDER)) 3726 logit = 0; 3727 else 3728 logit = LOG_FCP | LOG_FCP_UNDER; 3729 lpfc_printf_vlog(vport, KERN_WARNING, logit, 3730 "9030 FCP cmd x%x failed <%d/%lld> " 3731 "status: x%x result: x%x " 3732 "sid: x%x did: x%x oxid: x%x " 3733 "Data: x%x x%x\n", 3734 cmd->cmnd[0], 3735 cmd->device ? cmd->device->id : 0xffff, 3736 cmd->device ? cmd->device->lun : 0xffff, 3737 lpfc_cmd->status, lpfc_cmd->result, 3738 vport->fc_myDID, 3739 (pnode) ? pnode->nlp_DID : 0, 3740 phba->sli_rev == LPFC_SLI_REV4 ? 3741 lpfc_cmd->cur_iocbq.sli4_xritag : 0xffff, 3742 pIocbOut->iocb.ulpContext, 3743 lpfc_cmd->cur_iocbq.iocb.ulpIoTag); 3744 3745 switch (lpfc_cmd->status) { 3746 case IOSTAT_FCP_RSP_ERROR: 3747 /* Call FCP RSP handler to determine result */ 3748 lpfc_handle_fcp_err(vport, lpfc_cmd, pIocbOut); 3749 break; 3750 case IOSTAT_NPORT_BSY: 3751 case IOSTAT_FABRIC_BSY: 3752 cmd->result = DID_TRANSPORT_DISRUPTED << 16; 3753 fast_path_evt = lpfc_alloc_fast_evt(phba); 3754 if (!fast_path_evt) 3755 break; 3756 fast_path_evt->un.fabric_evt.event_type = 3757 FC_REG_FABRIC_EVENT; 3758 fast_path_evt->un.fabric_evt.subcategory = 3759 (lpfc_cmd->status == IOSTAT_NPORT_BSY) ? 3760 LPFC_EVENT_PORT_BUSY : LPFC_EVENT_FABRIC_BUSY; 3761 if (pnode && NLP_CHK_NODE_ACT(pnode)) { 3762 memcpy(&fast_path_evt->un.fabric_evt.wwpn, 3763 &pnode->nlp_portname, 3764 sizeof(struct lpfc_name)); 3765 memcpy(&fast_path_evt->un.fabric_evt.wwnn, 3766 &pnode->nlp_nodename, 3767 sizeof(struct lpfc_name)); 3768 } 3769 fast_path_evt->vport = vport; 3770 fast_path_evt->work_evt.evt = 3771 LPFC_EVT_FASTPATH_MGMT_EVT; 3772 spin_lock_irqsave(&phba->hbalock, flags); 3773 list_add_tail(&fast_path_evt->work_evt.evt_listp, 3774 &phba->work_list); 3775 spin_unlock_irqrestore(&phba->hbalock, flags); 3776 lpfc_worker_wake_up(phba); 3777 break; 3778 case IOSTAT_LOCAL_REJECT: 3779 case IOSTAT_REMOTE_STOP: 3780 if (lpfc_cmd->result == IOERR_ELXSEC_KEY_UNWRAP_ERROR || 3781 lpfc_cmd->result == 3782 IOERR_ELXSEC_KEY_UNWRAP_COMPARE_ERROR || 3783 lpfc_cmd->result == IOERR_ELXSEC_CRYPTO_ERROR || 3784 lpfc_cmd->result == 3785 IOERR_ELXSEC_CRYPTO_COMPARE_ERROR) { 3786 cmd->result = DID_NO_CONNECT << 16; 3787 break; 3788 } 3789 if (lpfc_cmd->result == IOERR_INVALID_RPI || 3790 lpfc_cmd->result == IOERR_NO_RESOURCES || 3791 lpfc_cmd->result == IOERR_ABORT_REQUESTED || 3792 lpfc_cmd->result == IOERR_SLER_CMD_RCV_FAILURE) { 3793 cmd->result = DID_REQUEUE << 16; 3794 break; 3795 } 3796 if ((lpfc_cmd->result == IOERR_RX_DMA_FAILED || 3797 lpfc_cmd->result == IOERR_TX_DMA_FAILED) && 3798 pIocbOut->iocb.unsli3.sli3_bg.bgstat) { 3799 if (scsi_get_prot_op(cmd) != SCSI_PROT_NORMAL) { 3800 /* 3801 * This is a response for a BG enabled 3802 * cmd. Parse BG error 3803 */ 3804 lpfc_parse_bg_err(phba, lpfc_cmd, 3805 pIocbOut); 3806 break; 3807 } else { 3808 lpfc_printf_vlog(vport, KERN_WARNING, 3809 LOG_BG, 3810 "9031 non-zero BGSTAT " 3811 "on unprotected cmd\n"); 3812 } 3813 } 3814 if ((lpfc_cmd->status == IOSTAT_REMOTE_STOP) 3815 && (phba->sli_rev == LPFC_SLI_REV4) 3816 && (pnode && NLP_CHK_NODE_ACT(pnode))) { 3817 /* This IO was aborted by the target, we don't 3818 * know the rxid and because we did not send the 3819 * ABTS we cannot generate and RRQ. 3820 */ 3821 lpfc_set_rrq_active(phba, pnode, 3822 lpfc_cmd->cur_iocbq.sli4_lxritag, 3823 0, 0); 3824 } 3825 /* fall through */ 3826 default: 3827 cmd->result = DID_ERROR << 16; 3828 break; 3829 } 3830 3831 if (!pnode || !NLP_CHK_NODE_ACT(pnode) 3832 || (pnode->nlp_state != NLP_STE_MAPPED_NODE)) 3833 cmd->result = DID_TRANSPORT_DISRUPTED << 16 | 3834 SAM_STAT_BUSY; 3835 } else 3836 cmd->result = DID_OK << 16; 3837 3838 if (cmd->result || lpfc_cmd->fcp_rsp->rspSnsLen) { 3839 uint32_t *lp = (uint32_t *)cmd->sense_buffer; 3840 3841 lpfc_printf_vlog(vport, KERN_INFO, LOG_FCP, 3842 "0710 Iodone <%d/%llu> cmd %p, error " 3843 "x%x SNS x%x x%x Data: x%x x%x\n", 3844 cmd->device->id, cmd->device->lun, cmd, 3845 cmd->result, *lp, *(lp + 3), cmd->retries, 3846 scsi_get_resid(cmd)); 3847 } 3848 3849 lpfc_update_stats(phba, lpfc_cmd); 3850 if (vport->cfg_max_scsicmpl_time && 3851 time_after(jiffies, lpfc_cmd->start_time + 3852 msecs_to_jiffies(vport->cfg_max_scsicmpl_time))) { 3853 spin_lock_irqsave(shost->host_lock, flags); 3854 if (pnode && NLP_CHK_NODE_ACT(pnode)) { 3855 if (pnode->cmd_qdepth > 3856 atomic_read(&pnode->cmd_pending) && 3857 (atomic_read(&pnode->cmd_pending) > 3858 LPFC_MIN_TGT_QDEPTH) && 3859 ((cmd->cmnd[0] == READ_10) || 3860 (cmd->cmnd[0] == WRITE_10))) 3861 pnode->cmd_qdepth = 3862 atomic_read(&pnode->cmd_pending); 3863 3864 pnode->last_change_time = jiffies; 3865 } 3866 spin_unlock_irqrestore(shost->host_lock, flags); 3867 } 3868 lpfc_scsi_unprep_dma_buf(phba, lpfc_cmd); 3869 3870 lpfc_cmd->pCmd = NULL; 3871 spin_unlock(&lpfc_cmd->buf_lock); 3872 3873 /* The sdev is not guaranteed to be valid post scsi_done upcall. */ 3874 cmd->scsi_done(cmd); 3875 3876 /* 3877 * If there is an abort thread waiting for command completion 3878 * wake up the thread. 3879 */ 3880 spin_lock(&lpfc_cmd->buf_lock); 3881 lpfc_cmd->cur_iocbq.iocb_flag &= ~LPFC_DRIVER_ABORTED; 3882 if (lpfc_cmd->waitq) { 3883 wake_up(lpfc_cmd->waitq); 3884 lpfc_cmd->waitq = NULL; 3885 } 3886 spin_unlock(&lpfc_cmd->buf_lock); 3887 3888 lpfc_release_scsi_buf(phba, lpfc_cmd); 3889 } 3890 3891 /** 3892 * lpfc_fcpcmd_to_iocb - copy the fcp_cmd data into the IOCB 3893 * @data: A pointer to the immediate command data portion of the IOCB. 3894 * @fcp_cmnd: The FCP Command that is provided by the SCSI layer. 3895 * 3896 * The routine copies the entire FCP command from @fcp_cmnd to @data while 3897 * byte swapping the data to big endian format for transmission on the wire. 3898 **/ 3899 static void 3900 lpfc_fcpcmd_to_iocb(uint8_t *data, struct fcp_cmnd *fcp_cmnd) 3901 { 3902 int i, j; 3903 for (i = 0, j = 0; i < sizeof(struct fcp_cmnd); 3904 i += sizeof(uint32_t), j++) { 3905 ((uint32_t *)data)[j] = cpu_to_be32(((uint32_t *)fcp_cmnd)[j]); 3906 } 3907 } 3908 3909 /** 3910 * lpfc_scsi_prep_cmnd - Wrapper func for convert scsi cmnd to FCP info unit 3911 * @vport: The virtual port for which this call is being executed. 3912 * @lpfc_cmd: The scsi command which needs to send. 3913 * @pnode: Pointer to lpfc_nodelist. 3914 * 3915 * This routine initializes fcp_cmnd and iocb data structure from scsi command 3916 * to transfer for device with SLI3 interface spec. 3917 **/ 3918 static void 3919 lpfc_scsi_prep_cmnd(struct lpfc_vport *vport, struct lpfc_io_buf *lpfc_cmd, 3920 struct lpfc_nodelist *pnode) 3921 { 3922 struct lpfc_hba *phba = vport->phba; 3923 struct scsi_cmnd *scsi_cmnd = lpfc_cmd->pCmd; 3924 struct fcp_cmnd *fcp_cmnd = lpfc_cmd->fcp_cmnd; 3925 IOCB_t *iocb_cmd = &lpfc_cmd->cur_iocbq.iocb; 3926 struct lpfc_iocbq *piocbq = &(lpfc_cmd->cur_iocbq); 3927 struct lpfc_sli4_hdw_queue *hdwq = NULL; 3928 int datadir = scsi_cmnd->sc_data_direction; 3929 int idx; 3930 uint8_t *ptr; 3931 bool sli4; 3932 uint32_t fcpdl; 3933 3934 if (!pnode || !NLP_CHK_NODE_ACT(pnode)) 3935 return; 3936 3937 lpfc_cmd->fcp_rsp->rspSnsLen = 0; 3938 /* clear task management bits */ 3939 lpfc_cmd->fcp_cmnd->fcpCntl2 = 0; 3940 3941 int_to_scsilun(lpfc_cmd->pCmd->device->lun, 3942 &lpfc_cmd->fcp_cmnd->fcp_lun); 3943 3944 ptr = &fcp_cmnd->fcpCdb[0]; 3945 memcpy(ptr, scsi_cmnd->cmnd, scsi_cmnd->cmd_len); 3946 if (scsi_cmnd->cmd_len < LPFC_FCP_CDB_LEN) { 3947 ptr += scsi_cmnd->cmd_len; 3948 memset(ptr, 0, (LPFC_FCP_CDB_LEN - scsi_cmnd->cmd_len)); 3949 } 3950 3951 fcp_cmnd->fcpCntl1 = SIMPLE_Q; 3952 3953 sli4 = (phba->sli_rev == LPFC_SLI_REV4); 3954 piocbq->iocb.un.fcpi.fcpi_XRdy = 0; 3955 idx = lpfc_cmd->hdwq_no; 3956 if (phba->sli4_hba.hdwq) 3957 hdwq = &phba->sli4_hba.hdwq[idx]; 3958 3959 /* 3960 * There are three possibilities here - use scatter-gather segment, use 3961 * the single mapping, or neither. Start the lpfc command prep by 3962 * bumping the bpl beyond the fcp_cmnd and fcp_rsp regions to the first 3963 * data bde entry. 3964 */ 3965 if (scsi_sg_count(scsi_cmnd)) { 3966 if (datadir == DMA_TO_DEVICE) { 3967 iocb_cmd->ulpCommand = CMD_FCP_IWRITE64_CR; 3968 iocb_cmd->ulpPU = PARM_READ_CHECK; 3969 if (vport->cfg_first_burst_size && 3970 (pnode->nlp_flag & NLP_FIRSTBURST)) { 3971 fcpdl = scsi_bufflen(scsi_cmnd); 3972 if (fcpdl < vport->cfg_first_burst_size) 3973 piocbq->iocb.un.fcpi.fcpi_XRdy = fcpdl; 3974 else 3975 piocbq->iocb.un.fcpi.fcpi_XRdy = 3976 vport->cfg_first_burst_size; 3977 } 3978 fcp_cmnd->fcpCntl3 = WRITE_DATA; 3979 if (hdwq) 3980 hdwq->scsi_cstat.output_requests++; 3981 } else { 3982 iocb_cmd->ulpCommand = CMD_FCP_IREAD64_CR; 3983 iocb_cmd->ulpPU = PARM_READ_CHECK; 3984 fcp_cmnd->fcpCntl3 = READ_DATA; 3985 if (hdwq) 3986 hdwq->scsi_cstat.input_requests++; 3987 } 3988 } else { 3989 iocb_cmd->ulpCommand = CMD_FCP_ICMND64_CR; 3990 iocb_cmd->un.fcpi.fcpi_parm = 0; 3991 iocb_cmd->ulpPU = 0; 3992 fcp_cmnd->fcpCntl3 = 0; 3993 if (hdwq) 3994 hdwq->scsi_cstat.control_requests++; 3995 } 3996 if (phba->sli_rev == 3 && 3997 !(phba->sli3_options & LPFC_SLI3_BG_ENABLED)) 3998 lpfc_fcpcmd_to_iocb(iocb_cmd->unsli3.fcp_ext.icd, fcp_cmnd); 3999 /* 4000 * Finish initializing those IOCB fields that are independent 4001 * of the scsi_cmnd request_buffer 4002 */ 4003 piocbq->iocb.ulpContext = pnode->nlp_rpi; 4004 if (sli4) 4005 piocbq->iocb.ulpContext = 4006 phba->sli4_hba.rpi_ids[pnode->nlp_rpi]; 4007 if (pnode->nlp_fcp_info & NLP_FCP_2_DEVICE) 4008 piocbq->iocb.ulpFCP2Rcvy = 1; 4009 else 4010 piocbq->iocb.ulpFCP2Rcvy = 0; 4011 4012 piocbq->iocb.ulpClass = (pnode->nlp_fcp_info & 0x0f); 4013 piocbq->context1 = lpfc_cmd; 4014 piocbq->iocb_cmpl = lpfc_scsi_cmd_iocb_cmpl; 4015 piocbq->iocb.ulpTimeout = lpfc_cmd->timeout; 4016 piocbq->vport = vport; 4017 } 4018 4019 /** 4020 * lpfc_scsi_prep_task_mgmt_cmd - Convert SLI3 scsi TM cmd to FCP info unit 4021 * @vport: The virtual port for which this call is being executed. 4022 * @lpfc_cmd: Pointer to lpfc_io_buf data structure. 4023 * @lun: Logical unit number. 4024 * @task_mgmt_cmd: SCSI task management command. 4025 * 4026 * This routine creates FCP information unit corresponding to @task_mgmt_cmd 4027 * for device with SLI-3 interface spec. 4028 * 4029 * Return codes: 4030 * 0 - Error 4031 * 1 - Success 4032 **/ 4033 static int 4034 lpfc_scsi_prep_task_mgmt_cmd(struct lpfc_vport *vport, 4035 struct lpfc_io_buf *lpfc_cmd, 4036 uint64_t lun, 4037 uint8_t task_mgmt_cmd) 4038 { 4039 struct lpfc_iocbq *piocbq; 4040 IOCB_t *piocb; 4041 struct fcp_cmnd *fcp_cmnd; 4042 struct lpfc_rport_data *rdata = lpfc_cmd->rdata; 4043 struct lpfc_nodelist *ndlp = rdata->pnode; 4044 4045 if (!ndlp || !NLP_CHK_NODE_ACT(ndlp) || 4046 ndlp->nlp_state != NLP_STE_MAPPED_NODE) 4047 return 0; 4048 4049 piocbq = &(lpfc_cmd->cur_iocbq); 4050 piocbq->vport = vport; 4051 4052 piocb = &piocbq->iocb; 4053 4054 fcp_cmnd = lpfc_cmd->fcp_cmnd; 4055 /* Clear out any old data in the FCP command area */ 4056 memset(fcp_cmnd, 0, sizeof(struct fcp_cmnd)); 4057 int_to_scsilun(lun, &fcp_cmnd->fcp_lun); 4058 fcp_cmnd->fcpCntl2 = task_mgmt_cmd; 4059 if (vport->phba->sli_rev == 3 && 4060 !(vport->phba->sli3_options & LPFC_SLI3_BG_ENABLED)) 4061 lpfc_fcpcmd_to_iocb(piocb->unsli3.fcp_ext.icd, fcp_cmnd); 4062 piocb->ulpCommand = CMD_FCP_ICMND64_CR; 4063 piocb->ulpContext = ndlp->nlp_rpi; 4064 if (vport->phba->sli_rev == LPFC_SLI_REV4) { 4065 piocb->ulpContext = 4066 vport->phba->sli4_hba.rpi_ids[ndlp->nlp_rpi]; 4067 } 4068 piocb->ulpFCP2Rcvy = (ndlp->nlp_fcp_info & NLP_FCP_2_DEVICE) ? 1 : 0; 4069 piocb->ulpClass = (ndlp->nlp_fcp_info & 0x0f); 4070 piocb->ulpPU = 0; 4071 piocb->un.fcpi.fcpi_parm = 0; 4072 4073 /* ulpTimeout is only one byte */ 4074 if (lpfc_cmd->timeout > 0xff) { 4075 /* 4076 * Do not timeout the command at the firmware level. 4077 * The driver will provide the timeout mechanism. 4078 */ 4079 piocb->ulpTimeout = 0; 4080 } else 4081 piocb->ulpTimeout = lpfc_cmd->timeout; 4082 4083 if (vport->phba->sli_rev == LPFC_SLI_REV4) 4084 lpfc_sli4_set_rsp_sgl_last(vport->phba, lpfc_cmd); 4085 4086 return 1; 4087 } 4088 4089 /** 4090 * lpfc_scsi_api_table_setup - Set up scsi api function jump table 4091 * @phba: The hba struct for which this call is being executed. 4092 * @dev_grp: The HBA PCI-Device group number. 4093 * 4094 * This routine sets up the SCSI interface API function jump table in @phba 4095 * struct. 4096 * Returns: 0 - success, -ENODEV - failure. 4097 **/ 4098 int 4099 lpfc_scsi_api_table_setup(struct lpfc_hba *phba, uint8_t dev_grp) 4100 { 4101 4102 phba->lpfc_scsi_unprep_dma_buf = lpfc_scsi_unprep_dma_buf; 4103 phba->lpfc_scsi_prep_cmnd = lpfc_scsi_prep_cmnd; 4104 4105 switch (dev_grp) { 4106 case LPFC_PCI_DEV_LP: 4107 phba->lpfc_scsi_prep_dma_buf = lpfc_scsi_prep_dma_buf_s3; 4108 phba->lpfc_bg_scsi_prep_dma_buf = lpfc_bg_scsi_prep_dma_buf_s3; 4109 phba->lpfc_release_scsi_buf = lpfc_release_scsi_buf_s3; 4110 phba->lpfc_get_scsi_buf = lpfc_get_scsi_buf_s3; 4111 break; 4112 case LPFC_PCI_DEV_OC: 4113 phba->lpfc_scsi_prep_dma_buf = lpfc_scsi_prep_dma_buf_s4; 4114 phba->lpfc_bg_scsi_prep_dma_buf = lpfc_bg_scsi_prep_dma_buf_s4; 4115 phba->lpfc_release_scsi_buf = lpfc_release_scsi_buf_s4; 4116 phba->lpfc_get_scsi_buf = lpfc_get_scsi_buf_s4; 4117 break; 4118 default: 4119 lpfc_printf_log(phba, KERN_ERR, LOG_INIT, 4120 "1418 Invalid HBA PCI-device group: 0x%x\n", 4121 dev_grp); 4122 return -ENODEV; 4123 break; 4124 } 4125 phba->lpfc_rampdown_queue_depth = lpfc_rampdown_queue_depth; 4126 phba->lpfc_scsi_cmd_iocb_cmpl = lpfc_scsi_cmd_iocb_cmpl; 4127 return 0; 4128 } 4129 4130 /** 4131 * lpfc_taskmgmt_def_cmpl - IOCB completion routine for task management command 4132 * @phba: The Hba for which this call is being executed. 4133 * @cmdiocbq: Pointer to lpfc_iocbq data structure. 4134 * @rspiocbq: Pointer to lpfc_iocbq data structure. 4135 * 4136 * This routine is IOCB completion routine for device reset and target reset 4137 * routine. This routine release scsi buffer associated with lpfc_cmd. 4138 **/ 4139 static void 4140 lpfc_tskmgmt_def_cmpl(struct lpfc_hba *phba, 4141 struct lpfc_iocbq *cmdiocbq, 4142 struct lpfc_iocbq *rspiocbq) 4143 { 4144 struct lpfc_io_buf *lpfc_cmd = 4145 (struct lpfc_io_buf *) cmdiocbq->context1; 4146 if (lpfc_cmd) 4147 lpfc_release_scsi_buf(phba, lpfc_cmd); 4148 return; 4149 } 4150 4151 /** 4152 * lpfc_check_pci_resettable - Walks list of devices on pci_dev's bus to check 4153 * if issuing a pci_bus_reset is possibly unsafe 4154 * @phba: lpfc_hba pointer. 4155 * 4156 * Description: 4157 * Walks the bus_list to ensure only PCI devices with Emulex 4158 * vendor id, device ids that support hot reset, and only one occurrence 4159 * of function 0. 4160 * 4161 * Returns: 4162 * -EBADSLT, detected invalid device 4163 * 0, successful 4164 */ 4165 int 4166 lpfc_check_pci_resettable(const struct lpfc_hba *phba) 4167 { 4168 const struct pci_dev *pdev = phba->pcidev; 4169 struct pci_dev *ptr = NULL; 4170 u8 counter = 0; 4171 4172 /* Walk the list of devices on the pci_dev's bus */ 4173 list_for_each_entry(ptr, &pdev->bus->devices, bus_list) { 4174 /* Check for Emulex Vendor ID */ 4175 if (ptr->vendor != PCI_VENDOR_ID_EMULEX) { 4176 lpfc_printf_log(phba, KERN_INFO, LOG_INIT, 4177 "8346 Non-Emulex vendor found: " 4178 "0x%04x\n", ptr->vendor); 4179 return -EBADSLT; 4180 } 4181 4182 /* Check for valid Emulex Device ID */ 4183 switch (ptr->device) { 4184 case PCI_DEVICE_ID_LANCER_FC: 4185 case PCI_DEVICE_ID_LANCER_G6_FC: 4186 case PCI_DEVICE_ID_LANCER_G7_FC: 4187 break; 4188 default: 4189 lpfc_printf_log(phba, KERN_INFO, LOG_INIT, 4190 "8347 Invalid device found: " 4191 "0x%04x\n", ptr->device); 4192 return -EBADSLT; 4193 } 4194 4195 /* Check for only one function 0 ID to ensure only one HBA on 4196 * secondary bus 4197 */ 4198 if (ptr->devfn == 0) { 4199 if (++counter > 1) { 4200 lpfc_printf_log(phba, KERN_INFO, LOG_INIT, 4201 "8348 More than one device on " 4202 "secondary bus found\n"); 4203 return -EBADSLT; 4204 } 4205 } 4206 } 4207 4208 return 0; 4209 } 4210 4211 /** 4212 * lpfc_info - Info entry point of scsi_host_template data structure 4213 * @host: The scsi host for which this call is being executed. 4214 * 4215 * This routine provides module information about hba. 4216 * 4217 * Reutrn code: 4218 * Pointer to char - Success. 4219 **/ 4220 const char * 4221 lpfc_info(struct Scsi_Host *host) 4222 { 4223 struct lpfc_vport *vport = (struct lpfc_vport *) host->hostdata; 4224 struct lpfc_hba *phba = vport->phba; 4225 int link_speed = 0; 4226 static char lpfcinfobuf[384]; 4227 char tmp[384] = {0}; 4228 4229 memset(lpfcinfobuf, 0, sizeof(lpfcinfobuf)); 4230 if (phba && phba->pcidev){ 4231 /* Model Description */ 4232 scnprintf(tmp, sizeof(tmp), phba->ModelDesc); 4233 if (strlcat(lpfcinfobuf, tmp, sizeof(lpfcinfobuf)) >= 4234 sizeof(lpfcinfobuf)) 4235 goto buffer_done; 4236 4237 /* PCI Info */ 4238 scnprintf(tmp, sizeof(tmp), 4239 " on PCI bus %02x device %02x irq %d", 4240 phba->pcidev->bus->number, phba->pcidev->devfn, 4241 phba->pcidev->irq); 4242 if (strlcat(lpfcinfobuf, tmp, sizeof(lpfcinfobuf)) >= 4243 sizeof(lpfcinfobuf)) 4244 goto buffer_done; 4245 4246 /* Port Number */ 4247 if (phba->Port[0]) { 4248 scnprintf(tmp, sizeof(tmp), " port %s", phba->Port); 4249 if (strlcat(lpfcinfobuf, tmp, sizeof(lpfcinfobuf)) >= 4250 sizeof(lpfcinfobuf)) 4251 goto buffer_done; 4252 } 4253 4254 /* Link Speed */ 4255 link_speed = lpfc_sli_port_speed_get(phba); 4256 if (link_speed != 0) { 4257 scnprintf(tmp, sizeof(tmp), 4258 " Logical Link Speed: %d Mbps", link_speed); 4259 if (strlcat(lpfcinfobuf, tmp, sizeof(lpfcinfobuf)) >= 4260 sizeof(lpfcinfobuf)) 4261 goto buffer_done; 4262 } 4263 4264 /* PCI resettable */ 4265 if (!lpfc_check_pci_resettable(phba)) { 4266 scnprintf(tmp, sizeof(tmp), " PCI resettable"); 4267 strlcat(lpfcinfobuf, tmp, sizeof(lpfcinfobuf)); 4268 } 4269 } 4270 4271 buffer_done: 4272 return lpfcinfobuf; 4273 } 4274 4275 /** 4276 * lpfc_poll_rearm_time - Routine to modify fcp_poll timer of hba 4277 * @phba: The Hba for which this call is being executed. 4278 * 4279 * This routine modifies fcp_poll_timer field of @phba by cfg_poll_tmo. 4280 * The default value of cfg_poll_tmo is 10 milliseconds. 4281 **/ 4282 static __inline__ void lpfc_poll_rearm_timer(struct lpfc_hba * phba) 4283 { 4284 unsigned long poll_tmo_expires = 4285 (jiffies + msecs_to_jiffies(phba->cfg_poll_tmo)); 4286 4287 if (!list_empty(&phba->sli.sli3_ring[LPFC_FCP_RING].txcmplq)) 4288 mod_timer(&phba->fcp_poll_timer, 4289 poll_tmo_expires); 4290 } 4291 4292 /** 4293 * lpfc_poll_start_timer - Routine to start fcp_poll_timer of HBA 4294 * @phba: The Hba for which this call is being executed. 4295 * 4296 * This routine starts the fcp_poll_timer of @phba. 4297 **/ 4298 void lpfc_poll_start_timer(struct lpfc_hba * phba) 4299 { 4300 lpfc_poll_rearm_timer(phba); 4301 } 4302 4303 /** 4304 * lpfc_poll_timeout - Restart polling timer 4305 * @ptr: Map to lpfc_hba data structure pointer. 4306 * 4307 * This routine restarts fcp_poll timer, when FCP ring polling is enable 4308 * and FCP Ring interrupt is disable. 4309 **/ 4310 4311 void lpfc_poll_timeout(struct timer_list *t) 4312 { 4313 struct lpfc_hba *phba = from_timer(phba, t, fcp_poll_timer); 4314 4315 if (phba->cfg_poll & ENABLE_FCP_RING_POLLING) { 4316 lpfc_sli_handle_fast_ring_event(phba, 4317 &phba->sli.sli3_ring[LPFC_FCP_RING], HA_R0RE_REQ); 4318 4319 if (phba->cfg_poll & DISABLE_FCP_RING_INT) 4320 lpfc_poll_rearm_timer(phba); 4321 } 4322 } 4323 4324 /** 4325 * lpfc_queuecommand - scsi_host_template queuecommand entry point 4326 * @cmnd: Pointer to scsi_cmnd data structure. 4327 * @done: Pointer to done routine. 4328 * 4329 * Driver registers this routine to scsi midlayer to submit a @cmd to process. 4330 * This routine prepares an IOCB from scsi command and provides to firmware. 4331 * The @done callback is invoked after driver finished processing the command. 4332 * 4333 * Return value : 4334 * 0 - Success 4335 * SCSI_MLQUEUE_HOST_BUSY - Block all devices served by this host temporarily. 4336 **/ 4337 static int 4338 lpfc_queuecommand(struct Scsi_Host *shost, struct scsi_cmnd *cmnd) 4339 { 4340 struct lpfc_vport *vport = (struct lpfc_vport *) shost->hostdata; 4341 struct lpfc_hba *phba = vport->phba; 4342 struct lpfc_rport_data *rdata; 4343 struct lpfc_nodelist *ndlp; 4344 struct lpfc_io_buf *lpfc_cmd; 4345 struct fc_rport *rport = starget_to_rport(scsi_target(cmnd->device)); 4346 int err, idx; 4347 #ifdef CONFIG_SCSI_LPFC_DEBUG_FS 4348 int cpu; 4349 #endif 4350 4351 rdata = lpfc_rport_data_from_scsi_device(cmnd->device); 4352 4353 /* sanity check on references */ 4354 if (unlikely(!rdata) || unlikely(!rport)) 4355 goto out_fail_command; 4356 4357 err = fc_remote_port_chkready(rport); 4358 if (err) { 4359 cmnd->result = err; 4360 goto out_fail_command; 4361 } 4362 ndlp = rdata->pnode; 4363 4364 if ((scsi_get_prot_op(cmnd) != SCSI_PROT_NORMAL) && 4365 (!(phba->sli3_options & LPFC_SLI3_BG_ENABLED))) { 4366 4367 lpfc_printf_log(phba, KERN_ERR, LOG_BG, 4368 "9058 BLKGRD: ERROR: rcvd protected cmd:%02x" 4369 " op:%02x str=%s without registering for" 4370 " BlockGuard - Rejecting command\n", 4371 cmnd->cmnd[0], scsi_get_prot_op(cmnd), 4372 dif_op_str[scsi_get_prot_op(cmnd)]); 4373 goto out_fail_command; 4374 } 4375 4376 /* 4377 * Catch race where our node has transitioned, but the 4378 * transport is still transitioning. 4379 */ 4380 if (!ndlp || !NLP_CHK_NODE_ACT(ndlp)) 4381 goto out_tgt_busy; 4382 if (lpfc_ndlp_check_qdepth(phba, ndlp)) { 4383 if (atomic_read(&ndlp->cmd_pending) >= ndlp->cmd_qdepth) { 4384 lpfc_printf_vlog(vport, KERN_INFO, LOG_FCP_ERROR, 4385 "3377 Target Queue Full, scsi Id:%d " 4386 "Qdepth:%d Pending command:%d" 4387 " WWNN:%02x:%02x:%02x:%02x:" 4388 "%02x:%02x:%02x:%02x, " 4389 " WWPN:%02x:%02x:%02x:%02x:" 4390 "%02x:%02x:%02x:%02x", 4391 ndlp->nlp_sid, ndlp->cmd_qdepth, 4392 atomic_read(&ndlp->cmd_pending), 4393 ndlp->nlp_nodename.u.wwn[0], 4394 ndlp->nlp_nodename.u.wwn[1], 4395 ndlp->nlp_nodename.u.wwn[2], 4396 ndlp->nlp_nodename.u.wwn[3], 4397 ndlp->nlp_nodename.u.wwn[4], 4398 ndlp->nlp_nodename.u.wwn[5], 4399 ndlp->nlp_nodename.u.wwn[6], 4400 ndlp->nlp_nodename.u.wwn[7], 4401 ndlp->nlp_portname.u.wwn[0], 4402 ndlp->nlp_portname.u.wwn[1], 4403 ndlp->nlp_portname.u.wwn[2], 4404 ndlp->nlp_portname.u.wwn[3], 4405 ndlp->nlp_portname.u.wwn[4], 4406 ndlp->nlp_portname.u.wwn[5], 4407 ndlp->nlp_portname.u.wwn[6], 4408 ndlp->nlp_portname.u.wwn[7]); 4409 goto out_tgt_busy; 4410 } 4411 } 4412 4413 lpfc_cmd = lpfc_get_scsi_buf(phba, ndlp, cmnd); 4414 if (lpfc_cmd == NULL) { 4415 lpfc_rampdown_queue_depth(phba); 4416 4417 lpfc_printf_vlog(vport, KERN_INFO, LOG_FCP_ERROR, 4418 "0707 driver's buffer pool is empty, " 4419 "IO busied\n"); 4420 goto out_host_busy; 4421 } 4422 4423 /* 4424 * Store the midlayer's command structure for the completion phase 4425 * and complete the command initialization. 4426 */ 4427 lpfc_cmd->pCmd = cmnd; 4428 lpfc_cmd->rdata = rdata; 4429 lpfc_cmd->ndlp = ndlp; 4430 cmnd->host_scribble = (unsigned char *)lpfc_cmd; 4431 4432 if (scsi_get_prot_op(cmnd) != SCSI_PROT_NORMAL) { 4433 if (vport->phba->cfg_enable_bg) { 4434 lpfc_printf_vlog(vport, 4435 KERN_INFO, LOG_SCSI_CMD, 4436 "9033 BLKGRD: rcvd %s cmd:x%x " 4437 "sector x%llx cnt %u pt %x\n", 4438 dif_op_str[scsi_get_prot_op(cmnd)], 4439 cmnd->cmnd[0], 4440 (unsigned long long)scsi_get_lba(cmnd), 4441 blk_rq_sectors(cmnd->request), 4442 (cmnd->cmnd[1]>>5)); 4443 } 4444 err = lpfc_bg_scsi_prep_dma_buf(phba, lpfc_cmd); 4445 } else { 4446 if (vport->phba->cfg_enable_bg) { 4447 lpfc_printf_vlog(vport, 4448 KERN_INFO, LOG_SCSI_CMD, 4449 "9038 BLKGRD: rcvd PROT_NORMAL cmd: " 4450 "x%x sector x%llx cnt %u pt %x\n", 4451 cmnd->cmnd[0], 4452 (unsigned long long)scsi_get_lba(cmnd), 4453 blk_rq_sectors(cmnd->request), 4454 (cmnd->cmnd[1]>>5)); 4455 } 4456 err = lpfc_scsi_prep_dma_buf(phba, lpfc_cmd); 4457 } 4458 4459 if (err) 4460 goto out_host_busy_free_buf; 4461 4462 lpfc_scsi_prep_cmnd(vport, lpfc_cmd, ndlp); 4463 4464 #ifdef CONFIG_SCSI_LPFC_DEBUG_FS 4465 if (phba->cpucheck_on & LPFC_CHECK_SCSI_IO) { 4466 cpu = raw_smp_processor_id(); 4467 if (cpu < LPFC_CHECK_CPU_CNT) { 4468 struct lpfc_sli4_hdw_queue *hdwq = 4469 &phba->sli4_hba.hdwq[lpfc_cmd->hdwq_no]; 4470 hdwq->cpucheck_xmt_io[cpu]++; 4471 } 4472 } 4473 #endif 4474 err = lpfc_sli_issue_iocb(phba, LPFC_FCP_RING, 4475 &lpfc_cmd->cur_iocbq, SLI_IOCB_RET_IOCB); 4476 if (err) { 4477 lpfc_printf_vlog(vport, KERN_INFO, LOG_FCP, 4478 "3376 FCP could not issue IOCB err %x" 4479 "FCP cmd x%x <%d/%llu> " 4480 "sid: x%x did: x%x oxid: x%x " 4481 "Data: x%x x%x x%x x%x\n", 4482 err, cmnd->cmnd[0], 4483 cmnd->device ? cmnd->device->id : 0xffff, 4484 cmnd->device ? cmnd->device->lun : (u64) -1, 4485 vport->fc_myDID, ndlp->nlp_DID, 4486 phba->sli_rev == LPFC_SLI_REV4 ? 4487 lpfc_cmd->cur_iocbq.sli4_xritag : 0xffff, 4488 lpfc_cmd->cur_iocbq.iocb.ulpContext, 4489 lpfc_cmd->cur_iocbq.iocb.ulpIoTag, 4490 lpfc_cmd->cur_iocbq.iocb.ulpTimeout, 4491 (uint32_t) 4492 (cmnd->request->timeout / 1000)); 4493 4494 goto out_host_busy_free_buf; 4495 } 4496 if (phba->cfg_poll & ENABLE_FCP_RING_POLLING) { 4497 lpfc_sli_handle_fast_ring_event(phba, 4498 &phba->sli.sli3_ring[LPFC_FCP_RING], HA_R0RE_REQ); 4499 4500 if (phba->cfg_poll & DISABLE_FCP_RING_INT) 4501 lpfc_poll_rearm_timer(phba); 4502 } 4503 4504 if (phba->cfg_xri_rebalancing) 4505 lpfc_keep_pvt_pool_above_lowwm(phba, lpfc_cmd->hdwq_no); 4506 4507 return 0; 4508 4509 out_host_busy_free_buf: 4510 idx = lpfc_cmd->hdwq_no; 4511 lpfc_scsi_unprep_dma_buf(phba, lpfc_cmd); 4512 if (phba->sli4_hba.hdwq) { 4513 switch (lpfc_cmd->fcp_cmnd->fcpCntl3) { 4514 case WRITE_DATA: 4515 phba->sli4_hba.hdwq[idx].scsi_cstat.output_requests--; 4516 break; 4517 case READ_DATA: 4518 phba->sli4_hba.hdwq[idx].scsi_cstat.input_requests--; 4519 break; 4520 default: 4521 phba->sli4_hba.hdwq[idx].scsi_cstat.control_requests--; 4522 } 4523 } 4524 lpfc_release_scsi_buf(phba, lpfc_cmd); 4525 out_host_busy: 4526 return SCSI_MLQUEUE_HOST_BUSY; 4527 4528 out_tgt_busy: 4529 return SCSI_MLQUEUE_TARGET_BUSY; 4530 4531 out_fail_command: 4532 cmnd->scsi_done(cmnd); 4533 return 0; 4534 } 4535 4536 4537 /** 4538 * lpfc_abort_handler - scsi_host_template eh_abort_handler entry point 4539 * @cmnd: Pointer to scsi_cmnd data structure. 4540 * 4541 * This routine aborts @cmnd pending in base driver. 4542 * 4543 * Return code : 4544 * 0x2003 - Error 4545 * 0x2002 - Success 4546 **/ 4547 static int 4548 lpfc_abort_handler(struct scsi_cmnd *cmnd) 4549 { 4550 struct Scsi_Host *shost = cmnd->device->host; 4551 struct lpfc_vport *vport = (struct lpfc_vport *) shost->hostdata; 4552 struct lpfc_hba *phba = vport->phba; 4553 struct lpfc_iocbq *iocb; 4554 struct lpfc_iocbq *abtsiocb; 4555 struct lpfc_io_buf *lpfc_cmd; 4556 IOCB_t *cmd, *icmd; 4557 int ret = SUCCESS, status = 0; 4558 struct lpfc_sli_ring *pring_s4 = NULL; 4559 int ret_val; 4560 unsigned long flags; 4561 DECLARE_WAIT_QUEUE_HEAD_ONSTACK(waitq); 4562 4563 status = fc_block_scsi_eh(cmnd); 4564 if (status != 0 && status != SUCCESS) 4565 return status; 4566 4567 lpfc_cmd = (struct lpfc_io_buf *)cmnd->host_scribble; 4568 if (!lpfc_cmd) 4569 return ret; 4570 4571 spin_lock_irqsave(&phba->hbalock, flags); 4572 /* driver queued commands are in process of being flushed */ 4573 if (phba->hba_flag & HBA_FCP_IOQ_FLUSH) { 4574 lpfc_printf_vlog(vport, KERN_WARNING, LOG_FCP, 4575 "3168 SCSI Layer abort requested I/O has been " 4576 "flushed by LLD.\n"); 4577 ret = FAILED; 4578 goto out_unlock; 4579 } 4580 4581 /* Guard against IO completion being called at same time */ 4582 spin_lock(&lpfc_cmd->buf_lock); 4583 4584 if (!lpfc_cmd->pCmd) { 4585 lpfc_printf_vlog(vport, KERN_WARNING, LOG_FCP, 4586 "2873 SCSI Layer I/O Abort Request IO CMPL Status " 4587 "x%x ID %d LUN %llu\n", 4588 SUCCESS, cmnd->device->id, cmnd->device->lun); 4589 goto out_unlock_buf; 4590 } 4591 4592 iocb = &lpfc_cmd->cur_iocbq; 4593 if (phba->sli_rev == LPFC_SLI_REV4) { 4594 pring_s4 = phba->sli4_hba.hdwq[iocb->hba_wqidx].fcp_wq->pring; 4595 if (!pring_s4) { 4596 ret = FAILED; 4597 goto out_unlock_buf; 4598 } 4599 spin_lock(&pring_s4->ring_lock); 4600 } 4601 /* the command is in process of being cancelled */ 4602 if (!(iocb->iocb_flag & LPFC_IO_ON_TXCMPLQ)) { 4603 lpfc_printf_vlog(vport, KERN_WARNING, LOG_FCP, 4604 "3169 SCSI Layer abort requested I/O has been " 4605 "cancelled by LLD.\n"); 4606 ret = FAILED; 4607 goto out_unlock_ring; 4608 } 4609 /* 4610 * If pCmd field of the corresponding lpfc_io_buf structure 4611 * points to a different SCSI command, then the driver has 4612 * already completed this command, but the midlayer did not 4613 * see the completion before the eh fired. Just return SUCCESS. 4614 */ 4615 if (lpfc_cmd->pCmd != cmnd) { 4616 lpfc_printf_vlog(vport, KERN_WARNING, LOG_FCP, 4617 "3170 SCSI Layer abort requested I/O has been " 4618 "completed by LLD.\n"); 4619 goto out_unlock_ring; 4620 } 4621 4622 BUG_ON(iocb->context1 != lpfc_cmd); 4623 4624 /* abort issued in recovery is still in progress */ 4625 if (iocb->iocb_flag & LPFC_DRIVER_ABORTED) { 4626 lpfc_printf_vlog(vport, KERN_WARNING, LOG_FCP, 4627 "3389 SCSI Layer I/O Abort Request is pending\n"); 4628 if (phba->sli_rev == LPFC_SLI_REV4) 4629 spin_unlock(&pring_s4->ring_lock); 4630 spin_unlock(&lpfc_cmd->buf_lock); 4631 spin_unlock_irqrestore(&phba->hbalock, flags); 4632 goto wait_for_cmpl; 4633 } 4634 4635 abtsiocb = __lpfc_sli_get_iocbq(phba); 4636 if (abtsiocb == NULL) { 4637 ret = FAILED; 4638 goto out_unlock_ring; 4639 } 4640 4641 /* Indicate the IO is being aborted by the driver. */ 4642 iocb->iocb_flag |= LPFC_DRIVER_ABORTED; 4643 4644 /* 4645 * The scsi command can not be in txq and it is in flight because the 4646 * pCmd is still pointig at the SCSI command we have to abort. There 4647 * is no need to search the txcmplq. Just send an abort to the FW. 4648 */ 4649 4650 cmd = &iocb->iocb; 4651 icmd = &abtsiocb->iocb; 4652 icmd->un.acxri.abortType = ABORT_TYPE_ABTS; 4653 icmd->un.acxri.abortContextTag = cmd->ulpContext; 4654 if (phba->sli_rev == LPFC_SLI_REV4) 4655 icmd->un.acxri.abortIoTag = iocb->sli4_xritag; 4656 else 4657 icmd->un.acxri.abortIoTag = cmd->ulpIoTag; 4658 4659 icmd->ulpLe = 1; 4660 icmd->ulpClass = cmd->ulpClass; 4661 4662 /* ABTS WQE must go to the same WQ as the WQE to be aborted */ 4663 abtsiocb->hba_wqidx = iocb->hba_wqidx; 4664 abtsiocb->iocb_flag |= LPFC_USE_FCPWQIDX; 4665 if (iocb->iocb_flag & LPFC_IO_FOF) 4666 abtsiocb->iocb_flag |= LPFC_IO_FOF; 4667 4668 if (lpfc_is_link_up(phba)) 4669 icmd->ulpCommand = CMD_ABORT_XRI_CN; 4670 else 4671 icmd->ulpCommand = CMD_CLOSE_XRI_CN; 4672 4673 abtsiocb->iocb_cmpl = lpfc_sli_abort_fcp_cmpl; 4674 abtsiocb->vport = vport; 4675 lpfc_cmd->waitq = &waitq; 4676 if (phba->sli_rev == LPFC_SLI_REV4) { 4677 /* Note: both hbalock and ring_lock must be set here */ 4678 ret_val = __lpfc_sli_issue_iocb(phba, pring_s4->ringno, 4679 abtsiocb, 0); 4680 spin_unlock(&pring_s4->ring_lock); 4681 } else { 4682 ret_val = __lpfc_sli_issue_iocb(phba, LPFC_FCP_RING, 4683 abtsiocb, 0); 4684 } 4685 /* no longer need the lock after this point */ 4686 spin_unlock_irqrestore(&phba->hbalock, flags); 4687 4688 if (ret_val == IOCB_ERROR) { 4689 /* Indicate the IO is not being aborted by the driver. */ 4690 iocb->iocb_flag &= ~LPFC_DRIVER_ABORTED; 4691 lpfc_cmd->waitq = NULL; 4692 spin_unlock(&lpfc_cmd->buf_lock); 4693 lpfc_sli_release_iocbq(phba, abtsiocb); 4694 ret = FAILED; 4695 goto out; 4696 } 4697 4698 spin_unlock(&lpfc_cmd->buf_lock); 4699 4700 if (phba->cfg_poll & DISABLE_FCP_RING_INT) 4701 lpfc_sli_handle_fast_ring_event(phba, 4702 &phba->sli.sli3_ring[LPFC_FCP_RING], HA_R0RE_REQ); 4703 4704 wait_for_cmpl: 4705 /* Wait for abort to complete */ 4706 wait_event_timeout(waitq, 4707 (lpfc_cmd->pCmd != cmnd), 4708 msecs_to_jiffies(2*vport->cfg_devloss_tmo*1000)); 4709 4710 spin_lock(&lpfc_cmd->buf_lock); 4711 4712 if (lpfc_cmd->pCmd == cmnd) { 4713 ret = FAILED; 4714 lpfc_printf_vlog(vport, KERN_ERR, LOG_FCP, 4715 "0748 abort handler timed out waiting " 4716 "for aborting I/O (xri:x%x) to complete: " 4717 "ret %#x, ID %d, LUN %llu\n", 4718 iocb->sli4_xritag, ret, 4719 cmnd->device->id, cmnd->device->lun); 4720 } 4721 spin_unlock(&lpfc_cmd->buf_lock); 4722 goto out; 4723 4724 out_unlock_ring: 4725 if (phba->sli_rev == LPFC_SLI_REV4) 4726 spin_unlock(&pring_s4->ring_lock); 4727 out_unlock_buf: 4728 spin_unlock(&lpfc_cmd->buf_lock); 4729 out_unlock: 4730 spin_unlock_irqrestore(&phba->hbalock, flags); 4731 out: 4732 lpfc_printf_vlog(vport, KERN_WARNING, LOG_FCP, 4733 "0749 SCSI Layer I/O Abort Request Status x%x ID %d " 4734 "LUN %llu\n", ret, cmnd->device->id, 4735 cmnd->device->lun); 4736 return ret; 4737 } 4738 4739 static char * 4740 lpfc_taskmgmt_name(uint8_t task_mgmt_cmd) 4741 { 4742 switch (task_mgmt_cmd) { 4743 case FCP_ABORT_TASK_SET: 4744 return "ABORT_TASK_SET"; 4745 case FCP_CLEAR_TASK_SET: 4746 return "FCP_CLEAR_TASK_SET"; 4747 case FCP_BUS_RESET: 4748 return "FCP_BUS_RESET"; 4749 case FCP_LUN_RESET: 4750 return "FCP_LUN_RESET"; 4751 case FCP_TARGET_RESET: 4752 return "FCP_TARGET_RESET"; 4753 case FCP_CLEAR_ACA: 4754 return "FCP_CLEAR_ACA"; 4755 case FCP_TERMINATE_TASK: 4756 return "FCP_TERMINATE_TASK"; 4757 default: 4758 return "unknown"; 4759 } 4760 } 4761 4762 4763 /** 4764 * lpfc_check_fcp_rsp - check the returned fcp_rsp to see if task failed 4765 * @vport: The virtual port for which this call is being executed. 4766 * @lpfc_cmd: Pointer to lpfc_io_buf data structure. 4767 * 4768 * This routine checks the FCP RSP INFO to see if the tsk mgmt command succeded 4769 * 4770 * Return code : 4771 * 0x2003 - Error 4772 * 0x2002 - Success 4773 **/ 4774 static int 4775 lpfc_check_fcp_rsp(struct lpfc_vport *vport, struct lpfc_io_buf *lpfc_cmd) 4776 { 4777 struct fcp_rsp *fcprsp = lpfc_cmd->fcp_rsp; 4778 uint32_t rsp_info; 4779 uint32_t rsp_len; 4780 uint8_t rsp_info_code; 4781 int ret = FAILED; 4782 4783 4784 if (fcprsp == NULL) 4785 lpfc_printf_vlog(vport, KERN_INFO, LOG_FCP, 4786 "0703 fcp_rsp is missing\n"); 4787 else { 4788 rsp_info = fcprsp->rspStatus2; 4789 rsp_len = be32_to_cpu(fcprsp->rspRspLen); 4790 rsp_info_code = fcprsp->rspInfo3; 4791 4792 4793 lpfc_printf_vlog(vport, KERN_INFO, 4794 LOG_FCP, 4795 "0706 fcp_rsp valid 0x%x," 4796 " rsp len=%d code 0x%x\n", 4797 rsp_info, 4798 rsp_len, rsp_info_code); 4799 4800 if ((fcprsp->rspStatus2&RSP_LEN_VALID) && (rsp_len == 8)) { 4801 switch (rsp_info_code) { 4802 case RSP_NO_FAILURE: 4803 lpfc_printf_vlog(vport, KERN_INFO, LOG_FCP, 4804 "0715 Task Mgmt No Failure\n"); 4805 ret = SUCCESS; 4806 break; 4807 case RSP_TM_NOT_SUPPORTED: /* TM rejected */ 4808 lpfc_printf_vlog(vport, KERN_INFO, LOG_FCP, 4809 "0716 Task Mgmt Target " 4810 "reject\n"); 4811 break; 4812 case RSP_TM_NOT_COMPLETED: /* TM failed */ 4813 lpfc_printf_vlog(vport, KERN_INFO, LOG_FCP, 4814 "0717 Task Mgmt Target " 4815 "failed TM\n"); 4816 break; 4817 case RSP_TM_INVALID_LU: /* TM to invalid LU! */ 4818 lpfc_printf_vlog(vport, KERN_INFO, LOG_FCP, 4819 "0718 Task Mgmt to invalid " 4820 "LUN\n"); 4821 break; 4822 } 4823 } 4824 } 4825 return ret; 4826 } 4827 4828 4829 /** 4830 * lpfc_send_taskmgmt - Generic SCSI Task Mgmt Handler 4831 * @vport: The virtual port for which this call is being executed. 4832 * @rdata: Pointer to remote port local data 4833 * @tgt_id: Target ID of remote device. 4834 * @lun_id: Lun number for the TMF 4835 * @task_mgmt_cmd: type of TMF to send 4836 * 4837 * This routine builds and sends a TMF (SCSI Task Mgmt Function) to 4838 * a remote port. 4839 * 4840 * Return Code: 4841 * 0x2003 - Error 4842 * 0x2002 - Success. 4843 **/ 4844 static int 4845 lpfc_send_taskmgmt(struct lpfc_vport *vport, struct scsi_cmnd *cmnd, 4846 unsigned int tgt_id, uint64_t lun_id, 4847 uint8_t task_mgmt_cmd) 4848 { 4849 struct lpfc_hba *phba = vport->phba; 4850 struct lpfc_io_buf *lpfc_cmd; 4851 struct lpfc_iocbq *iocbq; 4852 struct lpfc_iocbq *iocbqrsp; 4853 struct lpfc_rport_data *rdata; 4854 struct lpfc_nodelist *pnode; 4855 int ret; 4856 int status; 4857 4858 rdata = lpfc_rport_data_from_scsi_device(cmnd->device); 4859 if (!rdata || !rdata->pnode || !NLP_CHK_NODE_ACT(rdata->pnode)) 4860 return FAILED; 4861 pnode = rdata->pnode; 4862 4863 lpfc_cmd = lpfc_get_scsi_buf(phba, pnode, NULL); 4864 if (lpfc_cmd == NULL) 4865 return FAILED; 4866 lpfc_cmd->timeout = phba->cfg_task_mgmt_tmo; 4867 lpfc_cmd->rdata = rdata; 4868 lpfc_cmd->pCmd = cmnd; 4869 lpfc_cmd->ndlp = pnode; 4870 4871 status = lpfc_scsi_prep_task_mgmt_cmd(vport, lpfc_cmd, lun_id, 4872 task_mgmt_cmd); 4873 if (!status) { 4874 lpfc_release_scsi_buf(phba, lpfc_cmd); 4875 return FAILED; 4876 } 4877 4878 iocbq = &lpfc_cmd->cur_iocbq; 4879 iocbqrsp = lpfc_sli_get_iocbq(phba); 4880 if (iocbqrsp == NULL) { 4881 lpfc_release_scsi_buf(phba, lpfc_cmd); 4882 return FAILED; 4883 } 4884 iocbq->iocb_cmpl = lpfc_tskmgmt_def_cmpl; 4885 4886 lpfc_printf_vlog(vport, KERN_INFO, LOG_FCP, 4887 "0702 Issue %s to TGT %d LUN %llu " 4888 "rpi x%x nlp_flag x%x Data: x%x x%x\n", 4889 lpfc_taskmgmt_name(task_mgmt_cmd), tgt_id, lun_id, 4890 pnode->nlp_rpi, pnode->nlp_flag, iocbq->sli4_xritag, 4891 iocbq->iocb_flag); 4892 4893 status = lpfc_sli_issue_iocb_wait(phba, LPFC_FCP_RING, 4894 iocbq, iocbqrsp, lpfc_cmd->timeout); 4895 if ((status != IOCB_SUCCESS) || 4896 (iocbqrsp->iocb.ulpStatus != IOSTAT_SUCCESS)) { 4897 if (status != IOCB_SUCCESS || 4898 iocbqrsp->iocb.ulpStatus != IOSTAT_FCP_RSP_ERROR) 4899 lpfc_printf_vlog(vport, KERN_ERR, LOG_FCP, 4900 "0727 TMF %s to TGT %d LUN %llu " 4901 "failed (%d, %d) iocb_flag x%x\n", 4902 lpfc_taskmgmt_name(task_mgmt_cmd), 4903 tgt_id, lun_id, 4904 iocbqrsp->iocb.ulpStatus, 4905 iocbqrsp->iocb.un.ulpWord[4], 4906 iocbq->iocb_flag); 4907 /* if ulpStatus != IOCB_SUCCESS, then status == IOCB_SUCCESS */ 4908 if (status == IOCB_SUCCESS) { 4909 if (iocbqrsp->iocb.ulpStatus == IOSTAT_FCP_RSP_ERROR) 4910 /* Something in the FCP_RSP was invalid. 4911 * Check conditions */ 4912 ret = lpfc_check_fcp_rsp(vport, lpfc_cmd); 4913 else 4914 ret = FAILED; 4915 } else if (status == IOCB_TIMEDOUT) { 4916 ret = TIMEOUT_ERROR; 4917 } else { 4918 ret = FAILED; 4919 } 4920 } else 4921 ret = SUCCESS; 4922 4923 lpfc_sli_release_iocbq(phba, iocbqrsp); 4924 4925 if (ret != TIMEOUT_ERROR) 4926 lpfc_release_scsi_buf(phba, lpfc_cmd); 4927 4928 return ret; 4929 } 4930 4931 /** 4932 * lpfc_chk_tgt_mapped - 4933 * @vport: The virtual port to check on 4934 * @cmnd: Pointer to scsi_cmnd data structure. 4935 * 4936 * This routine delays until the scsi target (aka rport) for the 4937 * command exists (is present and logged in) or we declare it non-existent. 4938 * 4939 * Return code : 4940 * 0x2003 - Error 4941 * 0x2002 - Success 4942 **/ 4943 static int 4944 lpfc_chk_tgt_mapped(struct lpfc_vport *vport, struct scsi_cmnd *cmnd) 4945 { 4946 struct lpfc_rport_data *rdata; 4947 struct lpfc_nodelist *pnode; 4948 unsigned long later; 4949 4950 rdata = lpfc_rport_data_from_scsi_device(cmnd->device); 4951 if (!rdata) { 4952 lpfc_printf_vlog(vport, KERN_INFO, LOG_FCP, 4953 "0797 Tgt Map rport failure: rdata x%p\n", rdata); 4954 return FAILED; 4955 } 4956 pnode = rdata->pnode; 4957 /* 4958 * If target is not in a MAPPED state, delay until 4959 * target is rediscovered or devloss timeout expires. 4960 */ 4961 later = msecs_to_jiffies(2 * vport->cfg_devloss_tmo * 1000) + jiffies; 4962 while (time_after(later, jiffies)) { 4963 if (!pnode || !NLP_CHK_NODE_ACT(pnode)) 4964 return FAILED; 4965 if (pnode->nlp_state == NLP_STE_MAPPED_NODE) 4966 return SUCCESS; 4967 schedule_timeout_uninterruptible(msecs_to_jiffies(500)); 4968 rdata = lpfc_rport_data_from_scsi_device(cmnd->device); 4969 if (!rdata) 4970 return FAILED; 4971 pnode = rdata->pnode; 4972 } 4973 if (!pnode || !NLP_CHK_NODE_ACT(pnode) || 4974 (pnode->nlp_state != NLP_STE_MAPPED_NODE)) 4975 return FAILED; 4976 return SUCCESS; 4977 } 4978 4979 /** 4980 * lpfc_reset_flush_io_context - 4981 * @vport: The virtual port (scsi_host) for the flush context 4982 * @tgt_id: If aborting by Target contect - specifies the target id 4983 * @lun_id: If aborting by Lun context - specifies the lun id 4984 * @context: specifies the context level to flush at. 4985 * 4986 * After a reset condition via TMF, we need to flush orphaned i/o 4987 * contexts from the adapter. This routine aborts any contexts 4988 * outstanding, then waits for their completions. The wait is 4989 * bounded by devloss_tmo though. 4990 * 4991 * Return code : 4992 * 0x2003 - Error 4993 * 0x2002 - Success 4994 **/ 4995 static int 4996 lpfc_reset_flush_io_context(struct lpfc_vport *vport, uint16_t tgt_id, 4997 uint64_t lun_id, lpfc_ctx_cmd context) 4998 { 4999 struct lpfc_hba *phba = vport->phba; 5000 unsigned long later; 5001 int cnt; 5002 5003 cnt = lpfc_sli_sum_iocb(vport, tgt_id, lun_id, context); 5004 if (cnt) 5005 lpfc_sli_abort_taskmgmt(vport, 5006 &phba->sli.sli3_ring[LPFC_FCP_RING], 5007 tgt_id, lun_id, context); 5008 later = msecs_to_jiffies(2 * vport->cfg_devloss_tmo * 1000) + jiffies; 5009 while (time_after(later, jiffies) && cnt) { 5010 schedule_timeout_uninterruptible(msecs_to_jiffies(20)); 5011 cnt = lpfc_sli_sum_iocb(vport, tgt_id, lun_id, context); 5012 } 5013 if (cnt) { 5014 lpfc_printf_vlog(vport, KERN_ERR, LOG_FCP, 5015 "0724 I/O flush failure for context %s : cnt x%x\n", 5016 ((context == LPFC_CTX_LUN) ? "LUN" : 5017 ((context == LPFC_CTX_TGT) ? "TGT" : 5018 ((context == LPFC_CTX_HOST) ? "HOST" : "Unknown"))), 5019 cnt); 5020 return FAILED; 5021 } 5022 return SUCCESS; 5023 } 5024 5025 /** 5026 * lpfc_device_reset_handler - scsi_host_template eh_device_reset entry point 5027 * @cmnd: Pointer to scsi_cmnd data structure. 5028 * 5029 * This routine does a device reset by sending a LUN_RESET task management 5030 * command. 5031 * 5032 * Return code : 5033 * 0x2003 - Error 5034 * 0x2002 - Success 5035 **/ 5036 static int 5037 lpfc_device_reset_handler(struct scsi_cmnd *cmnd) 5038 { 5039 struct Scsi_Host *shost = cmnd->device->host; 5040 struct lpfc_vport *vport = (struct lpfc_vport *) shost->hostdata; 5041 struct lpfc_rport_data *rdata; 5042 struct lpfc_nodelist *pnode; 5043 unsigned tgt_id = cmnd->device->id; 5044 uint64_t lun_id = cmnd->device->lun; 5045 struct lpfc_scsi_event_header scsi_event; 5046 int status; 5047 5048 rdata = lpfc_rport_data_from_scsi_device(cmnd->device); 5049 if (!rdata || !rdata->pnode) { 5050 lpfc_printf_vlog(vport, KERN_ERR, LOG_FCP, 5051 "0798 Device Reset rdata failure: rdata x%p\n", 5052 rdata); 5053 return FAILED; 5054 } 5055 pnode = rdata->pnode; 5056 status = fc_block_scsi_eh(cmnd); 5057 if (status != 0 && status != SUCCESS) 5058 return status; 5059 5060 status = lpfc_chk_tgt_mapped(vport, cmnd); 5061 if (status == FAILED) { 5062 lpfc_printf_vlog(vport, KERN_ERR, LOG_FCP, 5063 "0721 Device Reset rport failure: rdata x%p\n", rdata); 5064 return FAILED; 5065 } 5066 5067 scsi_event.event_type = FC_REG_SCSI_EVENT; 5068 scsi_event.subcategory = LPFC_EVENT_LUNRESET; 5069 scsi_event.lun = lun_id; 5070 memcpy(scsi_event.wwpn, &pnode->nlp_portname, sizeof(struct lpfc_name)); 5071 memcpy(scsi_event.wwnn, &pnode->nlp_nodename, sizeof(struct lpfc_name)); 5072 5073 fc_host_post_vendor_event(shost, fc_get_event_number(), 5074 sizeof(scsi_event), (char *)&scsi_event, LPFC_NL_VENDOR_ID); 5075 5076 status = lpfc_send_taskmgmt(vport, cmnd, tgt_id, lun_id, 5077 FCP_LUN_RESET); 5078 5079 lpfc_printf_vlog(vport, KERN_ERR, LOG_FCP, 5080 "0713 SCSI layer issued Device Reset (%d, %llu) " 5081 "return x%x\n", tgt_id, lun_id, status); 5082 5083 /* 5084 * We have to clean up i/o as : they may be orphaned by the TMF; 5085 * or if the TMF failed, they may be in an indeterminate state. 5086 * So, continue on. 5087 * We will report success if all the i/o aborts successfully. 5088 */ 5089 if (status == SUCCESS) 5090 status = lpfc_reset_flush_io_context(vport, tgt_id, lun_id, 5091 LPFC_CTX_LUN); 5092 5093 return status; 5094 } 5095 5096 /** 5097 * lpfc_target_reset_handler - scsi_host_template eh_target_reset entry point 5098 * @cmnd: Pointer to scsi_cmnd data structure. 5099 * 5100 * This routine does a target reset by sending a TARGET_RESET task management 5101 * command. 5102 * 5103 * Return code : 5104 * 0x2003 - Error 5105 * 0x2002 - Success 5106 **/ 5107 static int 5108 lpfc_target_reset_handler(struct scsi_cmnd *cmnd) 5109 { 5110 struct Scsi_Host *shost = cmnd->device->host; 5111 struct lpfc_vport *vport = (struct lpfc_vport *) shost->hostdata; 5112 struct lpfc_rport_data *rdata; 5113 struct lpfc_nodelist *pnode; 5114 unsigned tgt_id = cmnd->device->id; 5115 uint64_t lun_id = cmnd->device->lun; 5116 struct lpfc_scsi_event_header scsi_event; 5117 int status; 5118 5119 rdata = lpfc_rport_data_from_scsi_device(cmnd->device); 5120 if (!rdata || !rdata->pnode) { 5121 lpfc_printf_vlog(vport, KERN_ERR, LOG_FCP, 5122 "0799 Target Reset rdata failure: rdata x%p\n", 5123 rdata); 5124 return FAILED; 5125 } 5126 pnode = rdata->pnode; 5127 status = fc_block_scsi_eh(cmnd); 5128 if (status != 0 && status != SUCCESS) 5129 return status; 5130 5131 status = lpfc_chk_tgt_mapped(vport, cmnd); 5132 if (status == FAILED) { 5133 lpfc_printf_vlog(vport, KERN_ERR, LOG_FCP, 5134 "0722 Target Reset rport failure: rdata x%p\n", rdata); 5135 if (pnode) { 5136 spin_lock_irq(shost->host_lock); 5137 pnode->nlp_flag &= ~NLP_NPR_ADISC; 5138 pnode->nlp_fcp_info &= ~NLP_FCP_2_DEVICE; 5139 spin_unlock_irq(shost->host_lock); 5140 } 5141 lpfc_reset_flush_io_context(vport, tgt_id, lun_id, 5142 LPFC_CTX_TGT); 5143 return FAST_IO_FAIL; 5144 } 5145 5146 scsi_event.event_type = FC_REG_SCSI_EVENT; 5147 scsi_event.subcategory = LPFC_EVENT_TGTRESET; 5148 scsi_event.lun = 0; 5149 memcpy(scsi_event.wwpn, &pnode->nlp_portname, sizeof(struct lpfc_name)); 5150 memcpy(scsi_event.wwnn, &pnode->nlp_nodename, sizeof(struct lpfc_name)); 5151 5152 fc_host_post_vendor_event(shost, fc_get_event_number(), 5153 sizeof(scsi_event), (char *)&scsi_event, LPFC_NL_VENDOR_ID); 5154 5155 status = lpfc_send_taskmgmt(vport, cmnd, tgt_id, lun_id, 5156 FCP_TARGET_RESET); 5157 5158 lpfc_printf_vlog(vport, KERN_ERR, LOG_FCP, 5159 "0723 SCSI layer issued Target Reset (%d, %llu) " 5160 "return x%x\n", tgt_id, lun_id, status); 5161 5162 /* 5163 * We have to clean up i/o as : they may be orphaned by the TMF; 5164 * or if the TMF failed, they may be in an indeterminate state. 5165 * So, continue on. 5166 * We will report success if all the i/o aborts successfully. 5167 */ 5168 if (status == SUCCESS) 5169 status = lpfc_reset_flush_io_context(vport, tgt_id, lun_id, 5170 LPFC_CTX_TGT); 5171 return status; 5172 } 5173 5174 /** 5175 * lpfc_bus_reset_handler - scsi_host_template eh_bus_reset_handler entry point 5176 * @cmnd: Pointer to scsi_cmnd data structure. 5177 * 5178 * This routine does target reset to all targets on @cmnd->device->host. 5179 * This emulates Parallel SCSI Bus Reset Semantics. 5180 * 5181 * Return code : 5182 * 0x2003 - Error 5183 * 0x2002 - Success 5184 **/ 5185 static int 5186 lpfc_bus_reset_handler(struct scsi_cmnd *cmnd) 5187 { 5188 struct Scsi_Host *shost = cmnd->device->host; 5189 struct lpfc_vport *vport = (struct lpfc_vport *) shost->hostdata; 5190 struct lpfc_nodelist *ndlp = NULL; 5191 struct lpfc_scsi_event_header scsi_event; 5192 int match; 5193 int ret = SUCCESS, status, i; 5194 5195 scsi_event.event_type = FC_REG_SCSI_EVENT; 5196 scsi_event.subcategory = LPFC_EVENT_BUSRESET; 5197 scsi_event.lun = 0; 5198 memcpy(scsi_event.wwpn, &vport->fc_portname, sizeof(struct lpfc_name)); 5199 memcpy(scsi_event.wwnn, &vport->fc_nodename, sizeof(struct lpfc_name)); 5200 5201 fc_host_post_vendor_event(shost, fc_get_event_number(), 5202 sizeof(scsi_event), (char *)&scsi_event, LPFC_NL_VENDOR_ID); 5203 5204 status = fc_block_scsi_eh(cmnd); 5205 if (status != 0 && status != SUCCESS) 5206 return status; 5207 5208 /* 5209 * Since the driver manages a single bus device, reset all 5210 * targets known to the driver. Should any target reset 5211 * fail, this routine returns failure to the midlayer. 5212 */ 5213 for (i = 0; i < LPFC_MAX_TARGET; i++) { 5214 /* Search for mapped node by target ID */ 5215 match = 0; 5216 spin_lock_irq(shost->host_lock); 5217 list_for_each_entry(ndlp, &vport->fc_nodes, nlp_listp) { 5218 if (!NLP_CHK_NODE_ACT(ndlp)) 5219 continue; 5220 if (vport->phba->cfg_fcp2_no_tgt_reset && 5221 (ndlp->nlp_fcp_info & NLP_FCP_2_DEVICE)) 5222 continue; 5223 if (ndlp->nlp_state == NLP_STE_MAPPED_NODE && 5224 ndlp->nlp_sid == i && 5225 ndlp->rport && 5226 ndlp->nlp_type & NLP_FCP_TARGET) { 5227 match = 1; 5228 break; 5229 } 5230 } 5231 spin_unlock_irq(shost->host_lock); 5232 if (!match) 5233 continue; 5234 5235 status = lpfc_send_taskmgmt(vport, cmnd, 5236 i, 0, FCP_TARGET_RESET); 5237 5238 if (status != SUCCESS) { 5239 lpfc_printf_vlog(vport, KERN_ERR, LOG_FCP, 5240 "0700 Bus Reset on target %d failed\n", 5241 i); 5242 ret = FAILED; 5243 } 5244 } 5245 /* 5246 * We have to clean up i/o as : they may be orphaned by the TMFs 5247 * above; or if any of the TMFs failed, they may be in an 5248 * indeterminate state. 5249 * We will report success if all the i/o aborts successfully. 5250 */ 5251 5252 status = lpfc_reset_flush_io_context(vport, 0, 0, LPFC_CTX_HOST); 5253 if (status != SUCCESS) 5254 ret = FAILED; 5255 5256 lpfc_printf_vlog(vport, KERN_ERR, LOG_FCP, 5257 "0714 SCSI layer issued Bus Reset Data: x%x\n", ret); 5258 return ret; 5259 } 5260 5261 /** 5262 * lpfc_host_reset_handler - scsi_host_template eh_host_reset_handler entry pt 5263 * @cmnd: Pointer to scsi_cmnd data structure. 5264 * 5265 * This routine does host reset to the adaptor port. It brings the HBA 5266 * offline, performs a board restart, and then brings the board back online. 5267 * The lpfc_offline calls lpfc_sli_hba_down which will abort and local 5268 * reject all outstanding SCSI commands to the host and error returned 5269 * back to SCSI mid-level. As this will be SCSI mid-level's last resort 5270 * of error handling, it will only return error if resetting of the adapter 5271 * is not successful; in all other cases, will return success. 5272 * 5273 * Return code : 5274 * 0x2003 - Error 5275 * 0x2002 - Success 5276 **/ 5277 static int 5278 lpfc_host_reset_handler(struct scsi_cmnd *cmnd) 5279 { 5280 struct Scsi_Host *shost = cmnd->device->host; 5281 struct lpfc_vport *vport = (struct lpfc_vport *) shost->hostdata; 5282 struct lpfc_hba *phba = vport->phba; 5283 int rc, ret = SUCCESS; 5284 5285 lpfc_printf_vlog(vport, KERN_ERR, LOG_FCP, 5286 "3172 SCSI layer issued Host Reset Data:\n"); 5287 5288 lpfc_offline_prep(phba, LPFC_MBX_WAIT); 5289 lpfc_offline(phba); 5290 rc = lpfc_sli_brdrestart(phba); 5291 if (rc) 5292 ret = FAILED; 5293 rc = lpfc_online(phba); 5294 if (rc) 5295 ret = FAILED; 5296 lpfc_unblock_mgmt_io(phba); 5297 5298 if (ret == FAILED) { 5299 lpfc_printf_vlog(vport, KERN_ERR, LOG_FCP, 5300 "3323 Failed host reset, bring it offline\n"); 5301 lpfc_sli4_offline_eratt(phba); 5302 } 5303 return ret; 5304 } 5305 5306 /** 5307 * lpfc_slave_alloc - scsi_host_template slave_alloc entry point 5308 * @sdev: Pointer to scsi_device. 5309 * 5310 * This routine populates the cmds_per_lun count + 2 scsi_bufs into this host's 5311 * globally available list of scsi buffers. This routine also makes sure scsi 5312 * buffer is not allocated more than HBA limit conveyed to midlayer. This list 5313 * of scsi buffer exists for the lifetime of the driver. 5314 * 5315 * Return codes: 5316 * non-0 - Error 5317 * 0 - Success 5318 **/ 5319 static int 5320 lpfc_slave_alloc(struct scsi_device *sdev) 5321 { 5322 struct lpfc_vport *vport = (struct lpfc_vport *) sdev->host->hostdata; 5323 struct lpfc_hba *phba = vport->phba; 5324 struct fc_rport *rport = starget_to_rport(scsi_target(sdev)); 5325 uint32_t total = 0; 5326 uint32_t num_to_alloc = 0; 5327 int num_allocated = 0; 5328 uint32_t sdev_cnt; 5329 struct lpfc_device_data *device_data; 5330 unsigned long flags; 5331 struct lpfc_name target_wwpn; 5332 5333 if (!rport || fc_remote_port_chkready(rport)) 5334 return -ENXIO; 5335 5336 if (phba->cfg_fof) { 5337 5338 /* 5339 * Check to see if the device data structure for the lun 5340 * exists. If not, create one. 5341 */ 5342 5343 u64_to_wwn(rport->port_name, target_wwpn.u.wwn); 5344 spin_lock_irqsave(&phba->devicelock, flags); 5345 device_data = __lpfc_get_device_data(phba, 5346 &phba->luns, 5347 &vport->fc_portname, 5348 &target_wwpn, 5349 sdev->lun); 5350 if (!device_data) { 5351 spin_unlock_irqrestore(&phba->devicelock, flags); 5352 device_data = lpfc_create_device_data(phba, 5353 &vport->fc_portname, 5354 &target_wwpn, 5355 sdev->lun, 5356 phba->cfg_XLanePriority, 5357 true); 5358 if (!device_data) 5359 return -ENOMEM; 5360 spin_lock_irqsave(&phba->devicelock, flags); 5361 list_add_tail(&device_data->listentry, &phba->luns); 5362 } 5363 device_data->rport_data = rport->dd_data; 5364 device_data->available = true; 5365 spin_unlock_irqrestore(&phba->devicelock, flags); 5366 sdev->hostdata = device_data; 5367 } else { 5368 sdev->hostdata = rport->dd_data; 5369 } 5370 sdev_cnt = atomic_inc_return(&phba->sdev_cnt); 5371 5372 /* For SLI4, all IO buffers are pre-allocated */ 5373 if (phba->sli_rev == LPFC_SLI_REV4) 5374 return 0; 5375 5376 /* This code path is now ONLY for SLI3 adapters */ 5377 5378 /* 5379 * Populate the cmds_per_lun count scsi_bufs into this host's globally 5380 * available list of scsi buffers. Don't allocate more than the 5381 * HBA limit conveyed to the midlayer via the host structure. The 5382 * formula accounts for the lun_queue_depth + error handlers + 1 5383 * extra. This list of scsi bufs exists for the lifetime of the driver. 5384 */ 5385 total = phba->total_scsi_bufs; 5386 num_to_alloc = vport->cfg_lun_queue_depth + 2; 5387 5388 /* If allocated buffers are enough do nothing */ 5389 if ((sdev_cnt * (vport->cfg_lun_queue_depth + 2)) < total) 5390 return 0; 5391 5392 /* Allow some exchanges to be available always to complete discovery */ 5393 if (total >= phba->cfg_hba_queue_depth - LPFC_DISC_IOCB_BUFF_COUNT ) { 5394 lpfc_printf_vlog(vport, KERN_WARNING, LOG_FCP, 5395 "0704 At limitation of %d preallocated " 5396 "command buffers\n", total); 5397 return 0; 5398 /* Allow some exchanges to be available always to complete discovery */ 5399 } else if (total + num_to_alloc > 5400 phba->cfg_hba_queue_depth - LPFC_DISC_IOCB_BUFF_COUNT ) { 5401 lpfc_printf_vlog(vport, KERN_WARNING, LOG_FCP, 5402 "0705 Allocation request of %d " 5403 "command buffers will exceed max of %d. " 5404 "Reducing allocation request to %d.\n", 5405 num_to_alloc, phba->cfg_hba_queue_depth, 5406 (phba->cfg_hba_queue_depth - total)); 5407 num_to_alloc = phba->cfg_hba_queue_depth - total; 5408 } 5409 num_allocated = lpfc_new_scsi_buf_s3(vport, num_to_alloc); 5410 if (num_to_alloc != num_allocated) { 5411 lpfc_printf_vlog(vport, KERN_ERR, LOG_FCP, 5412 "0708 Allocation request of %d " 5413 "command buffers did not succeed. " 5414 "Allocated %d buffers.\n", 5415 num_to_alloc, num_allocated); 5416 } 5417 if (num_allocated > 0) 5418 phba->total_scsi_bufs += num_allocated; 5419 return 0; 5420 } 5421 5422 /** 5423 * lpfc_slave_configure - scsi_host_template slave_configure entry point 5424 * @sdev: Pointer to scsi_device. 5425 * 5426 * This routine configures following items 5427 * - Tag command queuing support for @sdev if supported. 5428 * - Enable SLI polling for fcp ring if ENABLE_FCP_RING_POLLING flag is set. 5429 * 5430 * Return codes: 5431 * 0 - Success 5432 **/ 5433 static int 5434 lpfc_slave_configure(struct scsi_device *sdev) 5435 { 5436 struct lpfc_vport *vport = (struct lpfc_vport *) sdev->host->hostdata; 5437 struct lpfc_hba *phba = vport->phba; 5438 5439 scsi_change_queue_depth(sdev, vport->cfg_lun_queue_depth); 5440 5441 if (phba->cfg_poll & ENABLE_FCP_RING_POLLING) { 5442 lpfc_sli_handle_fast_ring_event(phba, 5443 &phba->sli.sli3_ring[LPFC_FCP_RING], HA_R0RE_REQ); 5444 if (phba->cfg_poll & DISABLE_FCP_RING_INT) 5445 lpfc_poll_rearm_timer(phba); 5446 } 5447 5448 return 0; 5449 } 5450 5451 /** 5452 * lpfc_slave_destroy - slave_destroy entry point of SHT data structure 5453 * @sdev: Pointer to scsi_device. 5454 * 5455 * This routine sets @sdev hostatdata filed to null. 5456 **/ 5457 static void 5458 lpfc_slave_destroy(struct scsi_device *sdev) 5459 { 5460 struct lpfc_vport *vport = (struct lpfc_vport *) sdev->host->hostdata; 5461 struct lpfc_hba *phba = vport->phba; 5462 unsigned long flags; 5463 struct lpfc_device_data *device_data = sdev->hostdata; 5464 5465 atomic_dec(&phba->sdev_cnt); 5466 if ((phba->cfg_fof) && (device_data)) { 5467 spin_lock_irqsave(&phba->devicelock, flags); 5468 device_data->available = false; 5469 if (!device_data->oas_enabled) 5470 lpfc_delete_device_data(phba, device_data); 5471 spin_unlock_irqrestore(&phba->devicelock, flags); 5472 } 5473 sdev->hostdata = NULL; 5474 return; 5475 } 5476 5477 /** 5478 * lpfc_create_device_data - creates and initializes device data structure for OAS 5479 * @pha: Pointer to host bus adapter structure. 5480 * @vport_wwpn: Pointer to vport's wwpn information 5481 * @target_wwpn: Pointer to target's wwpn information 5482 * @lun: Lun on target 5483 * @atomic_create: Flag to indicate if memory should be allocated using the 5484 * GFP_ATOMIC flag or not. 5485 * 5486 * This routine creates a device data structure which will contain identifying 5487 * information for the device (host wwpn, target wwpn, lun), state of OAS, 5488 * whether or not the corresponding lun is available by the system, 5489 * and pointer to the rport data. 5490 * 5491 * Return codes: 5492 * NULL - Error 5493 * Pointer to lpfc_device_data - Success 5494 **/ 5495 struct lpfc_device_data* 5496 lpfc_create_device_data(struct lpfc_hba *phba, struct lpfc_name *vport_wwpn, 5497 struct lpfc_name *target_wwpn, uint64_t lun, 5498 uint32_t pri, bool atomic_create) 5499 { 5500 5501 struct lpfc_device_data *lun_info; 5502 int memory_flags; 5503 5504 if (unlikely(!phba) || !vport_wwpn || !target_wwpn || 5505 !(phba->cfg_fof)) 5506 return NULL; 5507 5508 /* Attempt to create the device data to contain lun info */ 5509 5510 if (atomic_create) 5511 memory_flags = GFP_ATOMIC; 5512 else 5513 memory_flags = GFP_KERNEL; 5514 lun_info = mempool_alloc(phba->device_data_mem_pool, memory_flags); 5515 if (!lun_info) 5516 return NULL; 5517 INIT_LIST_HEAD(&lun_info->listentry); 5518 lun_info->rport_data = NULL; 5519 memcpy(&lun_info->device_id.vport_wwpn, vport_wwpn, 5520 sizeof(struct lpfc_name)); 5521 memcpy(&lun_info->device_id.target_wwpn, target_wwpn, 5522 sizeof(struct lpfc_name)); 5523 lun_info->device_id.lun = lun; 5524 lun_info->oas_enabled = false; 5525 lun_info->priority = pri; 5526 lun_info->available = false; 5527 return lun_info; 5528 } 5529 5530 /** 5531 * lpfc_delete_device_data - frees a device data structure for OAS 5532 * @pha: Pointer to host bus adapter structure. 5533 * @lun_info: Pointer to device data structure to free. 5534 * 5535 * This routine frees the previously allocated device data structure passed. 5536 * 5537 **/ 5538 void 5539 lpfc_delete_device_data(struct lpfc_hba *phba, 5540 struct lpfc_device_data *lun_info) 5541 { 5542 5543 if (unlikely(!phba) || !lun_info || 5544 !(phba->cfg_fof)) 5545 return; 5546 5547 if (!list_empty(&lun_info->listentry)) 5548 list_del(&lun_info->listentry); 5549 mempool_free(lun_info, phba->device_data_mem_pool); 5550 return; 5551 } 5552 5553 /** 5554 * __lpfc_get_device_data - returns the device data for the specified lun 5555 * @pha: Pointer to host bus adapter structure. 5556 * @list: Point to list to search. 5557 * @vport_wwpn: Pointer to vport's wwpn information 5558 * @target_wwpn: Pointer to target's wwpn information 5559 * @lun: Lun on target 5560 * 5561 * This routine searches the list passed for the specified lun's device data. 5562 * This function does not hold locks, it is the responsibility of the caller 5563 * to ensure the proper lock is held before calling the function. 5564 * 5565 * Return codes: 5566 * NULL - Error 5567 * Pointer to lpfc_device_data - Success 5568 **/ 5569 struct lpfc_device_data* 5570 __lpfc_get_device_data(struct lpfc_hba *phba, struct list_head *list, 5571 struct lpfc_name *vport_wwpn, 5572 struct lpfc_name *target_wwpn, uint64_t lun) 5573 { 5574 5575 struct lpfc_device_data *lun_info; 5576 5577 if (unlikely(!phba) || !list || !vport_wwpn || !target_wwpn || 5578 !phba->cfg_fof) 5579 return NULL; 5580 5581 /* Check to see if the lun is already enabled for OAS. */ 5582 5583 list_for_each_entry(lun_info, list, listentry) { 5584 if ((memcmp(&lun_info->device_id.vport_wwpn, vport_wwpn, 5585 sizeof(struct lpfc_name)) == 0) && 5586 (memcmp(&lun_info->device_id.target_wwpn, target_wwpn, 5587 sizeof(struct lpfc_name)) == 0) && 5588 (lun_info->device_id.lun == lun)) 5589 return lun_info; 5590 } 5591 5592 return NULL; 5593 } 5594 5595 /** 5596 * lpfc_find_next_oas_lun - searches for the next oas lun 5597 * @pha: Pointer to host bus adapter structure. 5598 * @vport_wwpn: Pointer to vport's wwpn information 5599 * @target_wwpn: Pointer to target's wwpn information 5600 * @starting_lun: Pointer to the lun to start searching for 5601 * @found_vport_wwpn: Pointer to the found lun's vport wwpn information 5602 * @found_target_wwpn: Pointer to the found lun's target wwpn information 5603 * @found_lun: Pointer to the found lun. 5604 * @found_lun_status: Pointer to status of the found lun. 5605 * 5606 * This routine searches the luns list for the specified lun 5607 * or the first lun for the vport/target. If the vport wwpn contains 5608 * a zero value then a specific vport is not specified. In this case 5609 * any vport which contains the lun will be considered a match. If the 5610 * target wwpn contains a zero value then a specific target is not specified. 5611 * In this case any target which contains the lun will be considered a 5612 * match. If the lun is found, the lun, vport wwpn, target wwpn and lun status 5613 * are returned. The function will also return the next lun if available. 5614 * If the next lun is not found, starting_lun parameter will be set to 5615 * NO_MORE_OAS_LUN. 5616 * 5617 * Return codes: 5618 * non-0 - Error 5619 * 0 - Success 5620 **/ 5621 bool 5622 lpfc_find_next_oas_lun(struct lpfc_hba *phba, struct lpfc_name *vport_wwpn, 5623 struct lpfc_name *target_wwpn, uint64_t *starting_lun, 5624 struct lpfc_name *found_vport_wwpn, 5625 struct lpfc_name *found_target_wwpn, 5626 uint64_t *found_lun, 5627 uint32_t *found_lun_status, 5628 uint32_t *found_lun_pri) 5629 { 5630 5631 unsigned long flags; 5632 struct lpfc_device_data *lun_info; 5633 struct lpfc_device_id *device_id; 5634 uint64_t lun; 5635 bool found = false; 5636 5637 if (unlikely(!phba) || !vport_wwpn || !target_wwpn || 5638 !starting_lun || !found_vport_wwpn || 5639 !found_target_wwpn || !found_lun || !found_lun_status || 5640 (*starting_lun == NO_MORE_OAS_LUN) || 5641 !phba->cfg_fof) 5642 return false; 5643 5644 lun = *starting_lun; 5645 *found_lun = NO_MORE_OAS_LUN; 5646 *starting_lun = NO_MORE_OAS_LUN; 5647 5648 /* Search for lun or the lun closet in value */ 5649 5650 spin_lock_irqsave(&phba->devicelock, flags); 5651 list_for_each_entry(lun_info, &phba->luns, listentry) { 5652 if (((wwn_to_u64(vport_wwpn->u.wwn) == 0) || 5653 (memcmp(&lun_info->device_id.vport_wwpn, vport_wwpn, 5654 sizeof(struct lpfc_name)) == 0)) && 5655 ((wwn_to_u64(target_wwpn->u.wwn) == 0) || 5656 (memcmp(&lun_info->device_id.target_wwpn, target_wwpn, 5657 sizeof(struct lpfc_name)) == 0)) && 5658 (lun_info->oas_enabled)) { 5659 device_id = &lun_info->device_id; 5660 if ((!found) && 5661 ((lun == FIND_FIRST_OAS_LUN) || 5662 (device_id->lun == lun))) { 5663 *found_lun = device_id->lun; 5664 memcpy(found_vport_wwpn, 5665 &device_id->vport_wwpn, 5666 sizeof(struct lpfc_name)); 5667 memcpy(found_target_wwpn, 5668 &device_id->target_wwpn, 5669 sizeof(struct lpfc_name)); 5670 if (lun_info->available) 5671 *found_lun_status = 5672 OAS_LUN_STATUS_EXISTS; 5673 else 5674 *found_lun_status = 0; 5675 *found_lun_pri = lun_info->priority; 5676 if (phba->cfg_oas_flags & OAS_FIND_ANY_VPORT) 5677 memset(vport_wwpn, 0x0, 5678 sizeof(struct lpfc_name)); 5679 if (phba->cfg_oas_flags & OAS_FIND_ANY_TARGET) 5680 memset(target_wwpn, 0x0, 5681 sizeof(struct lpfc_name)); 5682 found = true; 5683 } else if (found) { 5684 *starting_lun = device_id->lun; 5685 memcpy(vport_wwpn, &device_id->vport_wwpn, 5686 sizeof(struct lpfc_name)); 5687 memcpy(target_wwpn, &device_id->target_wwpn, 5688 sizeof(struct lpfc_name)); 5689 break; 5690 } 5691 } 5692 } 5693 spin_unlock_irqrestore(&phba->devicelock, flags); 5694 return found; 5695 } 5696 5697 /** 5698 * lpfc_enable_oas_lun - enables a lun for OAS operations 5699 * @pha: Pointer to host bus adapter structure. 5700 * @vport_wwpn: Pointer to vport's wwpn information 5701 * @target_wwpn: Pointer to target's wwpn information 5702 * @lun: Lun 5703 * 5704 * This routine enables a lun for oas operations. The routines does so by 5705 * doing the following : 5706 * 5707 * 1) Checks to see if the device data for the lun has been created. 5708 * 2) If found, sets the OAS enabled flag if not set and returns. 5709 * 3) Otherwise, creates a device data structure. 5710 * 4) If successfully created, indicates the device data is for an OAS lun, 5711 * indicates the lun is not available and add to the list of luns. 5712 * 5713 * Return codes: 5714 * false - Error 5715 * true - Success 5716 **/ 5717 bool 5718 lpfc_enable_oas_lun(struct lpfc_hba *phba, struct lpfc_name *vport_wwpn, 5719 struct lpfc_name *target_wwpn, uint64_t lun, uint8_t pri) 5720 { 5721 5722 struct lpfc_device_data *lun_info; 5723 unsigned long flags; 5724 5725 if (unlikely(!phba) || !vport_wwpn || !target_wwpn || 5726 !phba->cfg_fof) 5727 return false; 5728 5729 spin_lock_irqsave(&phba->devicelock, flags); 5730 5731 /* Check to see if the device data for the lun has been created */ 5732 lun_info = __lpfc_get_device_data(phba, &phba->luns, vport_wwpn, 5733 target_wwpn, lun); 5734 if (lun_info) { 5735 if (!lun_info->oas_enabled) 5736 lun_info->oas_enabled = true; 5737 lun_info->priority = pri; 5738 spin_unlock_irqrestore(&phba->devicelock, flags); 5739 return true; 5740 } 5741 5742 /* Create an lun info structure and add to list of luns */ 5743 lun_info = lpfc_create_device_data(phba, vport_wwpn, target_wwpn, lun, 5744 pri, false); 5745 if (lun_info) { 5746 lun_info->oas_enabled = true; 5747 lun_info->priority = pri; 5748 lun_info->available = false; 5749 list_add_tail(&lun_info->listentry, &phba->luns); 5750 spin_unlock_irqrestore(&phba->devicelock, flags); 5751 return true; 5752 } 5753 spin_unlock_irqrestore(&phba->devicelock, flags); 5754 return false; 5755 } 5756 5757 /** 5758 * lpfc_disable_oas_lun - disables a lun for OAS operations 5759 * @pha: Pointer to host bus adapter structure. 5760 * @vport_wwpn: Pointer to vport's wwpn information 5761 * @target_wwpn: Pointer to target's wwpn information 5762 * @lun: Lun 5763 * 5764 * This routine disables a lun for oas operations. The routines does so by 5765 * doing the following : 5766 * 5767 * 1) Checks to see if the device data for the lun is created. 5768 * 2) If present, clears the flag indicating this lun is for OAS. 5769 * 3) If the lun is not available by the system, the device data is 5770 * freed. 5771 * 5772 * Return codes: 5773 * false - Error 5774 * true - Success 5775 **/ 5776 bool 5777 lpfc_disable_oas_lun(struct lpfc_hba *phba, struct lpfc_name *vport_wwpn, 5778 struct lpfc_name *target_wwpn, uint64_t lun, uint8_t pri) 5779 { 5780 5781 struct lpfc_device_data *lun_info; 5782 unsigned long flags; 5783 5784 if (unlikely(!phba) || !vport_wwpn || !target_wwpn || 5785 !phba->cfg_fof) 5786 return false; 5787 5788 spin_lock_irqsave(&phba->devicelock, flags); 5789 5790 /* Check to see if the lun is available. */ 5791 lun_info = __lpfc_get_device_data(phba, 5792 &phba->luns, vport_wwpn, 5793 target_wwpn, lun); 5794 if (lun_info) { 5795 lun_info->oas_enabled = false; 5796 lun_info->priority = pri; 5797 if (!lun_info->available) 5798 lpfc_delete_device_data(phba, lun_info); 5799 spin_unlock_irqrestore(&phba->devicelock, flags); 5800 return true; 5801 } 5802 5803 spin_unlock_irqrestore(&phba->devicelock, flags); 5804 return false; 5805 } 5806 5807 static int 5808 lpfc_no_command(struct Scsi_Host *shost, struct scsi_cmnd *cmnd) 5809 { 5810 return SCSI_MLQUEUE_HOST_BUSY; 5811 } 5812 5813 static int 5814 lpfc_no_handler(struct scsi_cmnd *cmnd) 5815 { 5816 return FAILED; 5817 } 5818 5819 static int 5820 lpfc_no_slave(struct scsi_device *sdev) 5821 { 5822 return -ENODEV; 5823 } 5824 5825 struct scsi_host_template lpfc_template_nvme = { 5826 .module = THIS_MODULE, 5827 .name = LPFC_DRIVER_NAME, 5828 .proc_name = LPFC_DRIVER_NAME, 5829 .info = lpfc_info, 5830 .queuecommand = lpfc_no_command, 5831 .eh_abort_handler = lpfc_no_handler, 5832 .eh_device_reset_handler = lpfc_no_handler, 5833 .eh_target_reset_handler = lpfc_no_handler, 5834 .eh_bus_reset_handler = lpfc_no_handler, 5835 .eh_host_reset_handler = lpfc_no_handler, 5836 .slave_alloc = lpfc_no_slave, 5837 .slave_configure = lpfc_no_slave, 5838 .scan_finished = lpfc_scan_finished, 5839 .this_id = -1, 5840 .sg_tablesize = 1, 5841 .cmd_per_lun = 1, 5842 .shost_attrs = lpfc_hba_attrs, 5843 .max_sectors = 0xFFFF, 5844 .vendor_id = LPFC_NL_VENDOR_ID, 5845 .track_queue_depth = 0, 5846 }; 5847 5848 struct scsi_host_template lpfc_template_no_hr = { 5849 .module = THIS_MODULE, 5850 .name = LPFC_DRIVER_NAME, 5851 .proc_name = LPFC_DRIVER_NAME, 5852 .info = lpfc_info, 5853 .queuecommand = lpfc_queuecommand, 5854 .eh_timed_out = fc_eh_timed_out, 5855 .eh_abort_handler = lpfc_abort_handler, 5856 .eh_device_reset_handler = lpfc_device_reset_handler, 5857 .eh_target_reset_handler = lpfc_target_reset_handler, 5858 .eh_bus_reset_handler = lpfc_bus_reset_handler, 5859 .slave_alloc = lpfc_slave_alloc, 5860 .slave_configure = lpfc_slave_configure, 5861 .slave_destroy = lpfc_slave_destroy, 5862 .scan_finished = lpfc_scan_finished, 5863 .this_id = -1, 5864 .sg_tablesize = LPFC_DEFAULT_SG_SEG_CNT, 5865 .cmd_per_lun = LPFC_CMD_PER_LUN, 5866 .shost_attrs = lpfc_hba_attrs, 5867 .max_sectors = 0xFFFF, 5868 .vendor_id = LPFC_NL_VENDOR_ID, 5869 .change_queue_depth = scsi_change_queue_depth, 5870 .track_queue_depth = 1, 5871 }; 5872 5873 struct scsi_host_template lpfc_template = { 5874 .module = THIS_MODULE, 5875 .name = LPFC_DRIVER_NAME, 5876 .proc_name = LPFC_DRIVER_NAME, 5877 .info = lpfc_info, 5878 .queuecommand = lpfc_queuecommand, 5879 .eh_timed_out = fc_eh_timed_out, 5880 .eh_abort_handler = lpfc_abort_handler, 5881 .eh_device_reset_handler = lpfc_device_reset_handler, 5882 .eh_target_reset_handler = lpfc_target_reset_handler, 5883 .eh_bus_reset_handler = lpfc_bus_reset_handler, 5884 .eh_host_reset_handler = lpfc_host_reset_handler, 5885 .slave_alloc = lpfc_slave_alloc, 5886 .slave_configure = lpfc_slave_configure, 5887 .slave_destroy = lpfc_slave_destroy, 5888 .scan_finished = lpfc_scan_finished, 5889 .this_id = -1, 5890 .sg_tablesize = LPFC_DEFAULT_SG_SEG_CNT, 5891 .cmd_per_lun = LPFC_CMD_PER_LUN, 5892 .shost_attrs = lpfc_hba_attrs, 5893 .max_sectors = 0xFFFF, 5894 .vendor_id = LPFC_NL_VENDOR_ID, 5895 .change_queue_depth = scsi_change_queue_depth, 5896 .track_queue_depth = 1, 5897 }; 5898 5899 struct scsi_host_template lpfc_vport_template = { 5900 .module = THIS_MODULE, 5901 .name = LPFC_DRIVER_NAME, 5902 .proc_name = LPFC_DRIVER_NAME, 5903 .info = lpfc_info, 5904 .queuecommand = lpfc_queuecommand, 5905 .eh_timed_out = fc_eh_timed_out, 5906 .eh_abort_handler = lpfc_abort_handler, 5907 .eh_device_reset_handler = lpfc_device_reset_handler, 5908 .eh_target_reset_handler = lpfc_target_reset_handler, 5909 .slave_alloc = lpfc_slave_alloc, 5910 .slave_configure = lpfc_slave_configure, 5911 .slave_destroy = lpfc_slave_destroy, 5912 .scan_finished = lpfc_scan_finished, 5913 .this_id = -1, 5914 .sg_tablesize = LPFC_DEFAULT_SG_SEG_CNT, 5915 .cmd_per_lun = LPFC_CMD_PER_LUN, 5916 .shost_attrs = lpfc_vport_attrs, 5917 .max_sectors = 0xFFFF, 5918 .change_queue_depth = scsi_change_queue_depth, 5919 .track_queue_depth = 1, 5920 }; 5921