1/******************************************************************* 2 * This file is part of the Emulex Linux Device Driver for * 3 * Fibre Channel Host Bus Adapters. * 4 * Copyright (C) 2017-2023 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 <linux/blk-cgroup.h> 32#include <net/checksum.h> 33 34#include <scsi/scsi.h> 35#include <scsi/scsi_device.h> 36#include <scsi/scsi_eh.h> 37#include <scsi/scsi_host.h> 38#include <scsi/scsi_tcq.h> 39#include <scsi/scsi_transport_fc.h> 40 41#include "lpfc_version.h" 42#include "lpfc_hw4.h" 43#include "lpfc_hw.h" 44#include "lpfc_sli.h" 45#include "lpfc_sli4.h" 46#include "lpfc_nl.h" 47#include "lpfc_disc.h" 48#include "lpfc.h" 49#include "lpfc_scsi.h" 50#include "lpfc_logmsg.h" 51#include "lpfc_crtn.h" 52#include "lpfc_vport.h" 53 54#define LPFC_RESET_WAIT 2 55#define LPFC_ABORT_WAIT 2 56 57static char *dif_op_str[] = { 58 "PROT_NORMAL", 59 "PROT_READ_INSERT", 60 "PROT_WRITE_STRIP", 61 "PROT_READ_STRIP", 62 "PROT_WRITE_INSERT", 63 "PROT_READ_PASS", 64 "PROT_WRITE_PASS", 65}; 66 67struct scsi_dif_tuple { 68 __be16 guard_tag; /* Checksum */ 69 __be16 app_tag; /* Opaque storage */ 70 __be32 ref_tag; /* Target LBA or indirect LBA */ 71}; 72 73static struct lpfc_rport_data * 74lpfc_rport_data_from_scsi_device(struct scsi_device *sdev) 75{ 76 struct lpfc_vport *vport = (struct lpfc_vport *)sdev->host->hostdata; 77 78 if (vport->phba->cfg_fof) 79 return ((struct lpfc_device_data *)sdev->hostdata)->rport_data; 80 else 81 return (struct lpfc_rport_data *)sdev->hostdata; 82} 83 84static void 85lpfc_release_scsi_buf_s4(struct lpfc_hba *phba, struct lpfc_io_buf *psb); 86static void 87lpfc_release_scsi_buf_s3(struct lpfc_hba *phba, struct lpfc_io_buf *psb); 88static int 89lpfc_prot_group_type(struct lpfc_hba *phba, struct scsi_cmnd *sc); 90 91/** 92 * lpfc_sli4_set_rsp_sgl_last - Set the last bit in the response sge. 93 * @phba: Pointer to HBA object. 94 * @lpfc_cmd: lpfc scsi command object pointer. 95 * 96 * This function is called from the lpfc_prep_task_mgmt_cmd function to 97 * set the last bit in the response sge entry. 98 **/ 99static void 100lpfc_sli4_set_rsp_sgl_last(struct lpfc_hba *phba, 101 struct lpfc_io_buf *lpfc_cmd) 102{ 103 struct sli4_sge *sgl = (struct sli4_sge *)lpfc_cmd->dma_sgl; 104 if (sgl) { 105 sgl += 1; 106 sgl->word2 = le32_to_cpu(sgl->word2); 107 bf_set(lpfc_sli4_sge_last, sgl, 1); 108 sgl->word2 = cpu_to_le32(sgl->word2); 109 } 110} 111 112/** 113 * lpfc_rampdown_queue_depth - Post RAMP_DOWN_QUEUE event to worker thread 114 * @phba: The Hba for which this call is being executed. 115 * 116 * This routine is called when there is resource error in driver or firmware. 117 * This routine posts WORKER_RAMP_DOWN_QUEUE event for @phba. This routine 118 * posts at most 1 event each second. This routine wakes up worker thread of 119 * @phba to process WORKER_RAM_DOWN_EVENT event. 120 * 121 * This routine should be called with no lock held. 122 **/ 123void 124lpfc_rampdown_queue_depth(struct lpfc_hba *phba) 125{ 126 unsigned long flags; 127 uint32_t evt_posted; 128 unsigned long expires; 129 130 spin_lock_irqsave(&phba->hbalock, flags); 131 atomic_inc(&phba->num_rsrc_err); 132 phba->last_rsrc_error_time = jiffies; 133 134 expires = phba->last_ramp_down_time + QUEUE_RAMP_DOWN_INTERVAL; 135 if (time_after(expires, jiffies)) { 136 spin_unlock_irqrestore(&phba->hbalock, flags); 137 return; 138 } 139 140 phba->last_ramp_down_time = jiffies; 141 142 spin_unlock_irqrestore(&phba->hbalock, flags); 143 144 spin_lock_irqsave(&phba->pport->work_port_lock, flags); 145 evt_posted = phba->pport->work_port_events & WORKER_RAMP_DOWN_QUEUE; 146 if (!evt_posted) 147 phba->pport->work_port_events |= WORKER_RAMP_DOWN_QUEUE; 148 spin_unlock_irqrestore(&phba->pport->work_port_lock, flags); 149 150 if (!evt_posted) 151 lpfc_worker_wake_up(phba); 152 return; 153} 154 155/** 156 * lpfc_ramp_down_queue_handler - WORKER_RAMP_DOWN_QUEUE event handler 157 * @phba: The Hba for which this call is being executed. 158 * 159 * This routine is called to process WORKER_RAMP_DOWN_QUEUE event for worker 160 * thread.This routine reduces queue depth for all scsi device on each vport 161 * associated with @phba. 162 **/ 163void 164lpfc_ramp_down_queue_handler(struct lpfc_hba *phba) 165{ 166 struct lpfc_vport **vports; 167 struct Scsi_Host *shost; 168 struct scsi_device *sdev; 169 unsigned long new_queue_depth; 170 unsigned long num_rsrc_err, num_cmd_success; 171 int i; 172 173 num_rsrc_err = atomic_read(&phba->num_rsrc_err); 174 num_cmd_success = atomic_read(&phba->num_cmd_success); 175 176 /* 177 * The error and success command counters are global per 178 * driver instance. If another handler has already 179 * operated on this error event, just exit. 180 */ 181 if (num_rsrc_err == 0) 182 return; 183 184 vports = lpfc_create_vport_work_array(phba); 185 if (vports != NULL) 186 for (i = 0; i <= phba->max_vports && vports[i] != NULL; i++) { 187 shost = lpfc_shost_from_vport(vports[i]); 188 shost_for_each_device(sdev, shost) { 189 new_queue_depth = 190 sdev->queue_depth * num_rsrc_err / 191 (num_rsrc_err + num_cmd_success); 192 if (!new_queue_depth) 193 new_queue_depth = sdev->queue_depth - 1; 194 else 195 new_queue_depth = sdev->queue_depth - 196 new_queue_depth; 197 scsi_change_queue_depth(sdev, new_queue_depth); 198 } 199 } 200 lpfc_destroy_vport_work_array(phba, vports); 201 atomic_set(&phba->num_rsrc_err, 0); 202 atomic_set(&phba->num_cmd_success, 0); 203} 204 205/** 206 * lpfc_scsi_dev_block - set all scsi hosts to block state 207 * @phba: Pointer to HBA context object. 208 * 209 * This function walks vport list and set each SCSI host to block state 210 * by invoking fc_remote_port_delete() routine. This function is invoked 211 * with EEH when device's PCI slot has been permanently disabled. 212 **/ 213void 214lpfc_scsi_dev_block(struct lpfc_hba *phba) 215{ 216 struct lpfc_vport **vports; 217 struct Scsi_Host *shost; 218 struct scsi_device *sdev; 219 struct fc_rport *rport; 220 int i; 221 222 vports = lpfc_create_vport_work_array(phba); 223 if (vports != NULL) 224 for (i = 0; i <= phba->max_vports && vports[i] != NULL; i++) { 225 shost = lpfc_shost_from_vport(vports[i]); 226 shost_for_each_device(sdev, shost) { 227 rport = starget_to_rport(scsi_target(sdev)); 228 fc_remote_port_delete(rport); 229 } 230 } 231 lpfc_destroy_vport_work_array(phba, vports); 232} 233 234/** 235 * lpfc_new_scsi_buf_s3 - Scsi buffer allocator for HBA with SLI3 IF spec 236 * @vport: The virtual port for which this call being executed. 237 * @num_to_alloc: The requested number of buffers to allocate. 238 * 239 * This routine allocates a scsi buffer for device with SLI-3 interface spec, 240 * the scsi buffer contains all the necessary information needed to initiate 241 * a SCSI I/O. The non-DMAable buffer region contains information to build 242 * the IOCB. The DMAable region contains memory for the FCP CMND, FCP RSP, 243 * and the initial BPL. In addition to allocating memory, the FCP CMND and 244 * FCP RSP BDEs are setup in the BPL and the BPL BDE is setup in the IOCB. 245 * 246 * Return codes: 247 * int - number of scsi buffers that were allocated. 248 * 0 = failure, less than num_to_alloc is a partial failure. 249 **/ 250static int 251lpfc_new_scsi_buf_s3(struct lpfc_vport *vport, int num_to_alloc) 252{ 253 struct lpfc_hba *phba = vport->phba; 254 struct lpfc_io_buf *psb; 255 struct ulp_bde64 *bpl; 256 IOCB_t *iocb; 257 dma_addr_t pdma_phys_fcp_cmd; 258 dma_addr_t pdma_phys_fcp_rsp; 259 dma_addr_t pdma_phys_sgl; 260 uint16_t iotag; 261 int bcnt, bpl_size; 262 263 bpl_size = phba->cfg_sg_dma_buf_size - 264 (sizeof(struct fcp_cmnd) + sizeof(struct fcp_rsp)); 265 266 lpfc_printf_vlog(vport, KERN_INFO, LOG_FCP, 267 "9067 ALLOC %d scsi_bufs: %d (%d + %d + %d)\n", 268 num_to_alloc, phba->cfg_sg_dma_buf_size, 269 (int)sizeof(struct fcp_cmnd), 270 (int)sizeof(struct fcp_rsp), bpl_size); 271 272 for (bcnt = 0; bcnt < num_to_alloc; bcnt++) { 273 psb = kzalloc(sizeof(struct lpfc_io_buf), GFP_KERNEL); 274 if (!psb) 275 break; 276 277 /* 278 * Get memory from the pci pool to map the virt space to pci 279 * bus space for an I/O. The DMA buffer includes space for the 280 * struct fcp_cmnd, struct fcp_rsp and the number of bde's 281 * necessary to support the sg_tablesize. 282 */ 283 psb->data = dma_pool_zalloc(phba->lpfc_sg_dma_buf_pool, 284 GFP_KERNEL, &psb->dma_handle); 285 if (!psb->data) { 286 kfree(psb); 287 break; 288 } 289 290 291 /* Allocate iotag for psb->cur_iocbq. */ 292 iotag = lpfc_sli_next_iotag(phba, &psb->cur_iocbq); 293 if (iotag == 0) { 294 dma_pool_free(phba->lpfc_sg_dma_buf_pool, 295 psb->data, psb->dma_handle); 296 kfree(psb); 297 break; 298 } 299 psb->cur_iocbq.cmd_flag |= LPFC_IO_FCP; 300 301 psb->fcp_cmnd = psb->data; 302 psb->fcp_rsp = psb->data + sizeof(struct fcp_cmnd); 303 psb->dma_sgl = psb->data + sizeof(struct fcp_cmnd) + 304 sizeof(struct fcp_rsp); 305 306 /* Initialize local short-hand pointers. */ 307 bpl = (struct ulp_bde64 *)psb->dma_sgl; 308 pdma_phys_fcp_cmd = psb->dma_handle; 309 pdma_phys_fcp_rsp = psb->dma_handle + sizeof(struct fcp_cmnd); 310 pdma_phys_sgl = psb->dma_handle + sizeof(struct fcp_cmnd) + 311 sizeof(struct fcp_rsp); 312 313 /* 314 * The first two bdes are the FCP_CMD and FCP_RSP. The balance 315 * are sg list bdes. Initialize the first two and leave the 316 * rest for queuecommand. 317 */ 318 bpl[0].addrHigh = le32_to_cpu(putPaddrHigh(pdma_phys_fcp_cmd)); 319 bpl[0].addrLow = le32_to_cpu(putPaddrLow(pdma_phys_fcp_cmd)); 320 bpl[0].tus.f.bdeSize = sizeof(struct fcp_cmnd); 321 bpl[0].tus.f.bdeFlags = BUFF_TYPE_BDE_64; 322 bpl[0].tus.w = le32_to_cpu(bpl[0].tus.w); 323 324 /* Setup the physical region for the FCP RSP */ 325 bpl[1].addrHigh = le32_to_cpu(putPaddrHigh(pdma_phys_fcp_rsp)); 326 bpl[1].addrLow = le32_to_cpu(putPaddrLow(pdma_phys_fcp_rsp)); 327 bpl[1].tus.f.bdeSize = sizeof(struct fcp_rsp); 328 bpl[1].tus.f.bdeFlags = BUFF_TYPE_BDE_64; 329 bpl[1].tus.w = le32_to_cpu(bpl[1].tus.w); 330 331 /* 332 * Since the IOCB for the FCP I/O is built into this 333 * lpfc_scsi_buf, initialize it with all known data now. 334 */ 335 iocb = &psb->cur_iocbq.iocb; 336 iocb->un.fcpi64.bdl.ulpIoTag32 = 0; 337 if ((phba->sli_rev == 3) && 338 !(phba->sli3_options & LPFC_SLI3_BG_ENABLED)) { 339 /* fill in immediate fcp command BDE */ 340 iocb->un.fcpi64.bdl.bdeFlags = BUFF_TYPE_BDE_IMMED; 341 iocb->un.fcpi64.bdl.bdeSize = sizeof(struct fcp_cmnd); 342 iocb->un.fcpi64.bdl.addrLow = offsetof(IOCB_t, 343 unsli3.fcp_ext.icd); 344 iocb->un.fcpi64.bdl.addrHigh = 0; 345 iocb->ulpBdeCount = 0; 346 iocb->ulpLe = 0; 347 /* fill in response BDE */ 348 iocb->unsli3.fcp_ext.rbde.tus.f.bdeFlags = 349 BUFF_TYPE_BDE_64; 350 iocb->unsli3.fcp_ext.rbde.tus.f.bdeSize = 351 sizeof(struct fcp_rsp); 352 iocb->unsli3.fcp_ext.rbde.addrLow = 353 putPaddrLow(pdma_phys_fcp_rsp); 354 iocb->unsli3.fcp_ext.rbde.addrHigh = 355 putPaddrHigh(pdma_phys_fcp_rsp); 356 } else { 357 iocb->un.fcpi64.bdl.bdeFlags = BUFF_TYPE_BLP_64; 358 iocb->un.fcpi64.bdl.bdeSize = 359 (2 * sizeof(struct ulp_bde64)); 360 iocb->un.fcpi64.bdl.addrLow = 361 putPaddrLow(pdma_phys_sgl); 362 iocb->un.fcpi64.bdl.addrHigh = 363 putPaddrHigh(pdma_phys_sgl); 364 iocb->ulpBdeCount = 1; 365 iocb->ulpLe = 1; 366 } 367 iocb->ulpClass = CLASS3; 368 psb->status = IOSTAT_SUCCESS; 369 /* Put it back into the SCSI buffer list */ 370 psb->cur_iocbq.io_buf = psb; 371 spin_lock_init(&psb->buf_lock); 372 lpfc_release_scsi_buf_s3(phba, psb); 373 374 } 375 376 return bcnt; 377} 378 379/** 380 * lpfc_sli4_vport_delete_fcp_xri_aborted -Remove all ndlp references for vport 381 * @vport: pointer to lpfc vport data structure. 382 * 383 * This routine is invoked by the vport cleanup for deletions and the cleanup 384 * for an ndlp on removal. 385 **/ 386void 387lpfc_sli4_vport_delete_fcp_xri_aborted(struct lpfc_vport *vport) 388{ 389 struct lpfc_hba *phba = vport->phba; 390 struct lpfc_io_buf *psb, *next_psb; 391 struct lpfc_sli4_hdw_queue *qp; 392 unsigned long iflag = 0; 393 int idx; 394 395 if (!(vport->cfg_enable_fc4_type & LPFC_ENABLE_FCP)) 396 return; 397 398 spin_lock_irqsave(&phba->hbalock, iflag); 399 for (idx = 0; idx < phba->cfg_hdw_queue; idx++) { 400 qp = &phba->sli4_hba.hdwq[idx]; 401 402 spin_lock(&qp->abts_io_buf_list_lock); 403 list_for_each_entry_safe(psb, next_psb, 404 &qp->lpfc_abts_io_buf_list, list) { 405 if (psb->cur_iocbq.cmd_flag & LPFC_IO_NVME) 406 continue; 407 408 if (psb->rdata && psb->rdata->pnode && 409 psb->rdata->pnode->vport == vport) 410 psb->rdata = NULL; 411 } 412 spin_unlock(&qp->abts_io_buf_list_lock); 413 } 414 spin_unlock_irqrestore(&phba->hbalock, iflag); 415} 416 417/** 418 * lpfc_sli4_io_xri_aborted - Fast-path process of fcp xri abort 419 * @phba: pointer to lpfc hba data structure. 420 * @axri: pointer to the fcp xri abort wcqe structure. 421 * @idx: index into hdwq 422 * 423 * This routine is invoked by the worker thread to process a SLI4 fast-path 424 * FCP or NVME aborted xri. 425 **/ 426void 427lpfc_sli4_io_xri_aborted(struct lpfc_hba *phba, 428 struct sli4_wcqe_xri_aborted *axri, int idx) 429{ 430 u16 xri = 0; 431 u16 rxid = 0; 432 struct lpfc_io_buf *psb, *next_psb; 433 struct lpfc_sli4_hdw_queue *qp; 434 unsigned long iflag = 0; 435 struct lpfc_iocbq *iocbq; 436 int i; 437 struct lpfc_nodelist *ndlp; 438 int rrq_empty = 0; 439 struct lpfc_sli_ring *pring = phba->sli4_hba.els_wq->pring; 440 struct scsi_cmnd *cmd; 441 int offline = 0; 442 443 if (!(phba->cfg_enable_fc4_type & LPFC_ENABLE_FCP)) 444 return; 445 offline = pci_channel_offline(phba->pcidev); 446 if (!offline) { 447 xri = bf_get(lpfc_wcqe_xa_xri, axri); 448 rxid = bf_get(lpfc_wcqe_xa_remote_xid, axri); 449 } 450 qp = &phba->sli4_hba.hdwq[idx]; 451 spin_lock_irqsave(&phba->hbalock, iflag); 452 spin_lock(&qp->abts_io_buf_list_lock); 453 list_for_each_entry_safe(psb, next_psb, 454 &qp->lpfc_abts_io_buf_list, list) { 455 if (offline) 456 xri = psb->cur_iocbq.sli4_xritag; 457 if (psb->cur_iocbq.sli4_xritag == xri) { 458 list_del_init(&psb->list); 459 psb->flags &= ~LPFC_SBUF_XBUSY; 460 psb->status = IOSTAT_SUCCESS; 461 if (psb->cur_iocbq.cmd_flag & LPFC_IO_NVME) { 462 qp->abts_nvme_io_bufs--; 463 spin_unlock(&qp->abts_io_buf_list_lock); 464 spin_unlock_irqrestore(&phba->hbalock, iflag); 465 if (!offline) { 466 lpfc_sli4_nvme_xri_aborted(phba, axri, 467 psb); 468 return; 469 } 470 lpfc_sli4_nvme_pci_offline_aborted(phba, psb); 471 spin_lock_irqsave(&phba->hbalock, iflag); 472 spin_lock(&qp->abts_io_buf_list_lock); 473 continue; 474 } 475 qp->abts_scsi_io_bufs--; 476 spin_unlock(&qp->abts_io_buf_list_lock); 477 478 if (psb->rdata && psb->rdata->pnode) 479 ndlp = psb->rdata->pnode; 480 else 481 ndlp = NULL; 482 483 rrq_empty = list_empty(&phba->active_rrq_list); 484 spin_unlock_irqrestore(&phba->hbalock, iflag); 485 if (ndlp && !offline) { 486 lpfc_set_rrq_active(phba, ndlp, 487 psb->cur_iocbq.sli4_lxritag, rxid, 1); 488 lpfc_sli4_abts_err_handler(phba, ndlp, axri); 489 } 490 491 if (phba->cfg_fcp_wait_abts_rsp || offline) { 492 spin_lock_irqsave(&psb->buf_lock, iflag); 493 cmd = psb->pCmd; 494 psb->pCmd = NULL; 495 spin_unlock_irqrestore(&psb->buf_lock, iflag); 496 497 /* The sdev is not guaranteed to be valid post 498 * scsi_done upcall. 499 */ 500 if (cmd) 501 scsi_done(cmd); 502 503 /* 504 * We expect there is an abort thread waiting 505 * for command completion wake up the thread. 506 */ 507 spin_lock_irqsave(&psb->buf_lock, iflag); 508 psb->cur_iocbq.cmd_flag &= 509 ~LPFC_DRIVER_ABORTED; 510 if (psb->waitq) 511 wake_up(psb->waitq); 512 spin_unlock_irqrestore(&psb->buf_lock, iflag); 513 } 514 515 lpfc_release_scsi_buf_s4(phba, psb); 516 if (rrq_empty) 517 lpfc_worker_wake_up(phba); 518 if (!offline) 519 return; 520 spin_lock_irqsave(&phba->hbalock, iflag); 521 spin_lock(&qp->abts_io_buf_list_lock); 522 continue; 523 } 524 } 525 spin_unlock(&qp->abts_io_buf_list_lock); 526 if (!offline) { 527 for (i = 1; i <= phba->sli.last_iotag; i++) { 528 iocbq = phba->sli.iocbq_lookup[i]; 529 530 if (!(iocbq->cmd_flag & LPFC_IO_FCP) || 531 (iocbq->cmd_flag & LPFC_IO_LIBDFC)) 532 continue; 533 if (iocbq->sli4_xritag != xri) 534 continue; 535 psb = container_of(iocbq, struct lpfc_io_buf, cur_iocbq); 536 psb->flags &= ~LPFC_SBUF_XBUSY; 537 spin_unlock_irqrestore(&phba->hbalock, iflag); 538 if (!list_empty(&pring->txq)) 539 lpfc_worker_wake_up(phba); 540 return; 541 } 542 } 543 spin_unlock_irqrestore(&phba->hbalock, iflag); 544} 545 546/** 547 * lpfc_get_scsi_buf_s3 - Get a scsi buffer from lpfc_scsi_buf_list of the HBA 548 * @phba: The HBA for which this call is being executed. 549 * @ndlp: pointer to a node-list data structure. 550 * @cmnd: Pointer to scsi_cmnd data structure. 551 * 552 * This routine removes a scsi buffer from head of @phba lpfc_scsi_buf_list list 553 * and returns to caller. 554 * 555 * Return codes: 556 * NULL - Error 557 * Pointer to lpfc_scsi_buf - Success 558 **/ 559static struct lpfc_io_buf * 560lpfc_get_scsi_buf_s3(struct lpfc_hba *phba, struct lpfc_nodelist *ndlp, 561 struct scsi_cmnd *cmnd) 562{ 563 struct lpfc_io_buf *lpfc_cmd = NULL; 564 struct list_head *scsi_buf_list_get = &phba->lpfc_scsi_buf_list_get; 565 unsigned long iflag = 0; 566 567 spin_lock_irqsave(&phba->scsi_buf_list_get_lock, iflag); 568 list_remove_head(scsi_buf_list_get, lpfc_cmd, struct lpfc_io_buf, 569 list); 570 if (!lpfc_cmd) { 571 spin_lock(&phba->scsi_buf_list_put_lock); 572 list_splice(&phba->lpfc_scsi_buf_list_put, 573 &phba->lpfc_scsi_buf_list_get); 574 INIT_LIST_HEAD(&phba->lpfc_scsi_buf_list_put); 575 list_remove_head(scsi_buf_list_get, lpfc_cmd, 576 struct lpfc_io_buf, list); 577 spin_unlock(&phba->scsi_buf_list_put_lock); 578 } 579 spin_unlock_irqrestore(&phba->scsi_buf_list_get_lock, iflag); 580 581 if (lpfc_ndlp_check_qdepth(phba, ndlp) && lpfc_cmd) { 582 atomic_inc(&ndlp->cmd_pending); 583 lpfc_cmd->flags |= LPFC_SBUF_BUMP_QDEPTH; 584 } 585 return lpfc_cmd; 586} 587/** 588 * lpfc_get_scsi_buf_s4 - Get a scsi buffer from io_buf_list of the HBA 589 * @phba: The HBA for which this call is being executed. 590 * @ndlp: pointer to a node-list data structure. 591 * @cmnd: Pointer to scsi_cmnd data structure. 592 * 593 * This routine removes a scsi buffer from head of @hdwq io_buf_list 594 * and returns to caller. 595 * 596 * Return codes: 597 * NULL - Error 598 * Pointer to lpfc_scsi_buf - Success 599 **/ 600static struct lpfc_io_buf * 601lpfc_get_scsi_buf_s4(struct lpfc_hba *phba, struct lpfc_nodelist *ndlp, 602 struct scsi_cmnd *cmnd) 603{ 604 struct lpfc_io_buf *lpfc_cmd; 605 struct lpfc_sli4_hdw_queue *qp; 606 struct sli4_sge *sgl; 607 dma_addr_t pdma_phys_fcp_rsp; 608 dma_addr_t pdma_phys_fcp_cmd; 609 uint32_t cpu, idx; 610 int tag; 611 struct fcp_cmd_rsp_buf *tmp = NULL; 612 613 cpu = raw_smp_processor_id(); 614 if (cmnd && phba->cfg_fcp_io_sched == LPFC_FCP_SCHED_BY_HDWQ) { 615 tag = blk_mq_unique_tag(scsi_cmd_to_rq(cmnd)); 616 idx = blk_mq_unique_tag_to_hwq(tag); 617 } else { 618 idx = phba->sli4_hba.cpu_map[cpu].hdwq; 619 } 620 621 lpfc_cmd = lpfc_get_io_buf(phba, ndlp, idx, 622 !phba->cfg_xri_rebalancing); 623 if (!lpfc_cmd) { 624 qp = &phba->sli4_hba.hdwq[idx]; 625 qp->empty_io_bufs++; 626 return NULL; 627 } 628 629 /* Setup key fields in buffer that may have been changed 630 * if other protocols used this buffer. 631 */ 632 lpfc_cmd->cur_iocbq.cmd_flag = LPFC_IO_FCP; 633 lpfc_cmd->prot_seg_cnt = 0; 634 lpfc_cmd->seg_cnt = 0; 635 lpfc_cmd->timeout = 0; 636 lpfc_cmd->flags = 0; 637 lpfc_cmd->start_time = jiffies; 638 lpfc_cmd->waitq = NULL; 639 lpfc_cmd->cpu = cpu; 640#ifdef CONFIG_SCSI_LPFC_DEBUG_FS 641 lpfc_cmd->prot_data_type = 0; 642#endif 643 tmp = lpfc_get_cmd_rsp_buf_per_hdwq(phba, lpfc_cmd); 644 if (!tmp) { 645 lpfc_release_io_buf(phba, lpfc_cmd, lpfc_cmd->hdwq); 646 return NULL; 647 } 648 649 lpfc_cmd->fcp_cmnd = tmp->fcp_cmnd; 650 lpfc_cmd->fcp_rsp = tmp->fcp_rsp; 651 652 /* 653 * The first two SGEs are the FCP_CMD and FCP_RSP. 654 * The balance are sg list bdes. Initialize the 655 * first two and leave the rest for queuecommand. 656 */ 657 sgl = (struct sli4_sge *)lpfc_cmd->dma_sgl; 658 pdma_phys_fcp_cmd = tmp->fcp_cmd_rsp_dma_handle; 659 sgl->addr_hi = cpu_to_le32(putPaddrHigh(pdma_phys_fcp_cmd)); 660 sgl->addr_lo = cpu_to_le32(putPaddrLow(pdma_phys_fcp_cmd)); 661 sgl->word2 = le32_to_cpu(sgl->word2); 662 bf_set(lpfc_sli4_sge_last, sgl, 0); 663 sgl->word2 = cpu_to_le32(sgl->word2); 664 sgl->sge_len = cpu_to_le32(sizeof(struct fcp_cmnd)); 665 sgl++; 666 667 /* Setup the physical region for the FCP RSP */ 668 pdma_phys_fcp_rsp = pdma_phys_fcp_cmd + sizeof(struct fcp_cmnd); 669 sgl->addr_hi = cpu_to_le32(putPaddrHigh(pdma_phys_fcp_rsp)); 670 sgl->addr_lo = cpu_to_le32(putPaddrLow(pdma_phys_fcp_rsp)); 671 sgl->word2 = le32_to_cpu(sgl->word2); 672 bf_set(lpfc_sli4_sge_last, sgl, 1); 673 sgl->word2 = cpu_to_le32(sgl->word2); 674 sgl->sge_len = cpu_to_le32(sizeof(struct fcp_rsp)); 675 676 if (lpfc_ndlp_check_qdepth(phba, ndlp)) { 677 atomic_inc(&ndlp->cmd_pending); 678 lpfc_cmd->flags |= LPFC_SBUF_BUMP_QDEPTH; 679 } 680 return lpfc_cmd; 681} 682/** 683 * lpfc_get_scsi_buf - Get a scsi buffer from lpfc_scsi_buf_list of the HBA 684 * @phba: The HBA for which this call is being executed. 685 * @ndlp: pointer to a node-list data structure. 686 * @cmnd: Pointer to scsi_cmnd data structure. 687 * 688 * This routine removes a scsi buffer from head of @phba lpfc_scsi_buf_list list 689 * and returns to caller. 690 * 691 * Return codes: 692 * NULL - Error 693 * Pointer to lpfc_scsi_buf - Success 694 **/ 695static struct lpfc_io_buf* 696lpfc_get_scsi_buf(struct lpfc_hba *phba, struct lpfc_nodelist *ndlp, 697 struct scsi_cmnd *cmnd) 698{ 699 return phba->lpfc_get_scsi_buf(phba, ndlp, cmnd); 700} 701 702/** 703 * lpfc_release_scsi_buf_s3 - Return a scsi buffer back to hba scsi buf list 704 * @phba: The Hba for which this call is being executed. 705 * @psb: The scsi buffer which is being released. 706 * 707 * This routine releases @psb scsi buffer by adding it to tail of @phba 708 * lpfc_scsi_buf_list list. 709 **/ 710static void 711lpfc_release_scsi_buf_s3(struct lpfc_hba *phba, struct lpfc_io_buf *psb) 712{ 713 unsigned long iflag = 0; 714 715 psb->seg_cnt = 0; 716 psb->prot_seg_cnt = 0; 717 718 spin_lock_irqsave(&phba->scsi_buf_list_put_lock, iflag); 719 psb->pCmd = NULL; 720 psb->cur_iocbq.cmd_flag = LPFC_IO_FCP; 721 list_add_tail(&psb->list, &phba->lpfc_scsi_buf_list_put); 722 spin_unlock_irqrestore(&phba->scsi_buf_list_put_lock, iflag); 723} 724 725/** 726 * lpfc_release_scsi_buf_s4: Return a scsi buffer back to hba scsi buf list. 727 * @phba: The Hba for which this call is being executed. 728 * @psb: The scsi buffer which is being released. 729 * 730 * This routine releases @psb scsi buffer by adding it to tail of @hdwq 731 * io_buf_list list. For SLI4 XRI's are tied to the scsi buffer 732 * and cannot be reused for at least RA_TOV amount of time if it was 733 * aborted. 734 **/ 735static void 736lpfc_release_scsi_buf_s4(struct lpfc_hba *phba, struct lpfc_io_buf *psb) 737{ 738 struct lpfc_sli4_hdw_queue *qp; 739 unsigned long iflag = 0; 740 741 psb->seg_cnt = 0; 742 psb->prot_seg_cnt = 0; 743 744 qp = psb->hdwq; 745 if (psb->flags & LPFC_SBUF_XBUSY) { 746 spin_lock_irqsave(&qp->abts_io_buf_list_lock, iflag); 747 if (!phba->cfg_fcp_wait_abts_rsp) 748 psb->pCmd = NULL; 749 list_add_tail(&psb->list, &qp->lpfc_abts_io_buf_list); 750 qp->abts_scsi_io_bufs++; 751 spin_unlock_irqrestore(&qp->abts_io_buf_list_lock, iflag); 752 } else { 753 lpfc_release_io_buf(phba, (struct lpfc_io_buf *)psb, qp); 754 } 755} 756 757/** 758 * lpfc_release_scsi_buf: Return a scsi buffer back to hba scsi buf list. 759 * @phba: The Hba for which this call is being executed. 760 * @psb: The scsi buffer which is being released. 761 * 762 * This routine releases @psb scsi buffer by adding it to tail of @phba 763 * lpfc_scsi_buf_list list. 764 **/ 765static void 766lpfc_release_scsi_buf(struct lpfc_hba *phba, struct lpfc_io_buf *psb) 767{ 768 if ((psb->flags & LPFC_SBUF_BUMP_QDEPTH) && psb->ndlp) 769 atomic_dec(&psb->ndlp->cmd_pending); 770 771 psb->flags &= ~LPFC_SBUF_BUMP_QDEPTH; 772 phba->lpfc_release_scsi_buf(phba, psb); 773} 774 775/** 776 * lpfc_fcpcmd_to_iocb - copy the fcp_cmd data into the IOCB 777 * @data: A pointer to the immediate command data portion of the IOCB. 778 * @fcp_cmnd: The FCP Command that is provided by the SCSI layer. 779 * 780 * The routine copies the entire FCP command from @fcp_cmnd to @data while 781 * byte swapping the data to big endian format for transmission on the wire. 782 **/ 783static void 784lpfc_fcpcmd_to_iocb(u8 *data, struct fcp_cmnd *fcp_cmnd) 785{ 786 int i, j; 787 788 for (i = 0, j = 0; i < sizeof(struct fcp_cmnd); 789 i += sizeof(uint32_t), j++) { 790 ((uint32_t *)data)[j] = cpu_to_be32(((uint32_t *)fcp_cmnd)[j]); 791 } 792} 793 794/** 795 * lpfc_scsi_prep_dma_buf_s3 - DMA mapping for scsi buffer to SLI3 IF spec 796 * @phba: The Hba for which this call is being executed. 797 * @lpfc_cmd: The scsi buffer which is going to be mapped. 798 * 799 * This routine does the pci dma mapping for scatter-gather list of scsi cmnd 800 * field of @lpfc_cmd for device with SLI-3 interface spec. This routine scans 801 * through sg elements and format the bde. This routine also initializes all 802 * IOCB fields which are dependent on scsi command request buffer. 803 * 804 * Return codes: 805 * 1 - Error 806 * 0 - Success 807 **/ 808static int 809lpfc_scsi_prep_dma_buf_s3(struct lpfc_hba *phba, struct lpfc_io_buf *lpfc_cmd) 810{ 811 struct scsi_cmnd *scsi_cmnd = lpfc_cmd->pCmd; 812 struct scatterlist *sgel = NULL; 813 struct fcp_cmnd *fcp_cmnd = lpfc_cmd->fcp_cmnd; 814 struct ulp_bde64 *bpl = (struct ulp_bde64 *)lpfc_cmd->dma_sgl; 815 struct lpfc_iocbq *iocbq = &lpfc_cmd->cur_iocbq; 816 IOCB_t *iocb_cmd = &lpfc_cmd->cur_iocbq.iocb; 817 struct ulp_bde64 *data_bde = iocb_cmd->unsli3.fcp_ext.dbde; 818 dma_addr_t physaddr; 819 uint32_t num_bde = 0; 820 int nseg, datadir = scsi_cmnd->sc_data_direction; 821 822 /* 823 * There are three possibilities here - use scatter-gather segment, use 824 * the single mapping, or neither. Start the lpfc command prep by 825 * bumping the bpl beyond the fcp_cmnd and fcp_rsp regions to the first 826 * data bde entry. 827 */ 828 bpl += 2; 829 if (scsi_sg_count(scsi_cmnd)) { 830 /* 831 * The driver stores the segment count returned from dma_map_sg 832 * because this a count of dma-mappings used to map the use_sg 833 * pages. They are not guaranteed to be the same for those 834 * architectures that implement an IOMMU. 835 */ 836 837 nseg = dma_map_sg(&phba->pcidev->dev, scsi_sglist(scsi_cmnd), 838 scsi_sg_count(scsi_cmnd), datadir); 839 if (unlikely(!nseg)) 840 return 1; 841 842 lpfc_cmd->seg_cnt = nseg; 843 if (lpfc_cmd->seg_cnt > phba->cfg_sg_seg_cnt) { 844 lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT, 845 "9064 BLKGRD: %s: Too many sg segments" 846 " from dma_map_sg. Config %d, seg_cnt" 847 " %d\n", __func__, phba->cfg_sg_seg_cnt, 848 lpfc_cmd->seg_cnt); 849 WARN_ON_ONCE(lpfc_cmd->seg_cnt > phba->cfg_sg_seg_cnt); 850 lpfc_cmd->seg_cnt = 0; 851 scsi_dma_unmap(scsi_cmnd); 852 return 2; 853 } 854 855 /* 856 * The driver established a maximum scatter-gather segment count 857 * during probe that limits the number of sg elements in any 858 * single scsi command. Just run through the seg_cnt and format 859 * the bde's. 860 * When using SLI-3 the driver will try to fit all the BDEs into 861 * the IOCB. If it can't then the BDEs get added to a BPL as it 862 * does for SLI-2 mode. 863 */ 864 scsi_for_each_sg(scsi_cmnd, sgel, nseg, num_bde) { 865 physaddr = sg_dma_address(sgel); 866 if (phba->sli_rev == 3 && 867 !(phba->sli3_options & LPFC_SLI3_BG_ENABLED) && 868 !(iocbq->cmd_flag & DSS_SECURITY_OP) && 869 nseg <= LPFC_EXT_DATA_BDE_COUNT) { 870 data_bde->tus.f.bdeFlags = BUFF_TYPE_BDE_64; 871 data_bde->tus.f.bdeSize = sg_dma_len(sgel); 872 data_bde->addrLow = putPaddrLow(physaddr); 873 data_bde->addrHigh = putPaddrHigh(physaddr); 874 data_bde++; 875 } else { 876 bpl->tus.f.bdeFlags = BUFF_TYPE_BDE_64; 877 bpl->tus.f.bdeSize = sg_dma_len(sgel); 878 bpl->tus.w = le32_to_cpu(bpl->tus.w); 879 bpl->addrLow = 880 le32_to_cpu(putPaddrLow(physaddr)); 881 bpl->addrHigh = 882 le32_to_cpu(putPaddrHigh(physaddr)); 883 bpl++; 884 } 885 } 886 } 887 888 /* 889 * Finish initializing those IOCB fields that are dependent on the 890 * scsi_cmnd request_buffer. Note that for SLI-2 the bdeSize is 891 * explicitly reinitialized and for SLI-3 the extended bde count is 892 * explicitly reinitialized since all iocb memory resources are reused. 893 */ 894 if (phba->sli_rev == 3 && 895 !(phba->sli3_options & LPFC_SLI3_BG_ENABLED) && 896 !(iocbq->cmd_flag & DSS_SECURITY_OP)) { 897 if (num_bde > LPFC_EXT_DATA_BDE_COUNT) { 898 /* 899 * The extended IOCB format can only fit 3 BDE or a BPL. 900 * This I/O has more than 3 BDE so the 1st data bde will 901 * be a BPL that is filled in here. 902 */ 903 physaddr = lpfc_cmd->dma_handle; 904 data_bde->tus.f.bdeFlags = BUFF_TYPE_BLP_64; 905 data_bde->tus.f.bdeSize = (num_bde * 906 sizeof(struct ulp_bde64)); 907 physaddr += (sizeof(struct fcp_cmnd) + 908 sizeof(struct fcp_rsp) + 909 (2 * sizeof(struct ulp_bde64))); 910 data_bde->addrHigh = putPaddrHigh(physaddr); 911 data_bde->addrLow = putPaddrLow(physaddr); 912 /* ebde count includes the response bde and data bpl */ 913 iocb_cmd->unsli3.fcp_ext.ebde_count = 2; 914 } else { 915 /* ebde count includes the response bde and data bdes */ 916 iocb_cmd->unsli3.fcp_ext.ebde_count = (num_bde + 1); 917 } 918 } else { 919 iocb_cmd->un.fcpi64.bdl.bdeSize = 920 ((num_bde + 2) * sizeof(struct ulp_bde64)); 921 iocb_cmd->unsli3.fcp_ext.ebde_count = (num_bde + 1); 922 } 923 fcp_cmnd->fcpDl = cpu_to_be32(scsi_bufflen(scsi_cmnd)); 924 925 /* 926 * Due to difference in data length between DIF/non-DIF paths, 927 * we need to set word 4 of IOCB here 928 */ 929 iocb_cmd->un.fcpi.fcpi_parm = scsi_bufflen(scsi_cmnd); 930 lpfc_fcpcmd_to_iocb(iocb_cmd->unsli3.fcp_ext.icd, fcp_cmnd); 931 return 0; 932} 933 934#ifdef CONFIG_SCSI_LPFC_DEBUG_FS 935 936/* Return BG_ERR_INIT if error injection is detected by Initiator */ 937#define BG_ERR_INIT 0x1 938/* Return BG_ERR_TGT if error injection is detected by Target */ 939#define BG_ERR_TGT 0x2 940/* Return BG_ERR_SWAP if swapping CSUM<-->CRC is required for error injection */ 941#define BG_ERR_SWAP 0x10 942/* 943 * Return BG_ERR_CHECK if disabling Guard/Ref/App checking is required for 944 * error injection 945 */ 946#define BG_ERR_CHECK 0x20 947 948/** 949 * lpfc_bg_err_inject - Determine if we should inject an error 950 * @phba: The Hba for which this call is being executed. 951 * @sc: The SCSI command to examine 952 * @reftag: (out) BlockGuard reference tag for transmitted data 953 * @apptag: (out) BlockGuard application tag for transmitted data 954 * @new_guard: (in) Value to replace CRC with if needed 955 * 956 * Returns BG_ERR_* bit mask or 0 if request ignored 957 **/ 958static int 959lpfc_bg_err_inject(struct lpfc_hba *phba, struct scsi_cmnd *sc, 960 uint32_t *reftag, uint16_t *apptag, uint32_t new_guard) 961{ 962 struct scatterlist *sgpe; /* s/g prot entry */ 963 struct lpfc_io_buf *lpfc_cmd = NULL; 964 struct scsi_dif_tuple *src = NULL; 965 struct lpfc_nodelist *ndlp; 966 struct lpfc_rport_data *rdata; 967 uint32_t op = scsi_get_prot_op(sc); 968 uint32_t blksize; 969 uint32_t numblks; 970 u32 lba; 971 int rc = 0; 972 int blockoff = 0; 973 974 if (op == SCSI_PROT_NORMAL) 975 return 0; 976 977 sgpe = scsi_prot_sglist(sc); 978 lba = scsi_prot_ref_tag(sc); 979 980 /* First check if we need to match the LBA */ 981 if (phba->lpfc_injerr_lba != LPFC_INJERR_LBA_OFF) { 982 blksize = scsi_prot_interval(sc); 983 numblks = (scsi_bufflen(sc) + blksize - 1) / blksize; 984 985 /* Make sure we have the right LBA if one is specified */ 986 if (phba->lpfc_injerr_lba < (u64)lba || 987 (phba->lpfc_injerr_lba >= (u64)(lba + numblks))) 988 return 0; 989 if (sgpe) { 990 blockoff = phba->lpfc_injerr_lba - (u64)lba; 991 numblks = sg_dma_len(sgpe) / 992 sizeof(struct scsi_dif_tuple); 993 if (numblks < blockoff) 994 blockoff = numblks; 995 } 996 } 997 998 /* Next check if we need to match the remote NPortID or WWPN */ 999 rdata = lpfc_rport_data_from_scsi_device(sc->device); 1000 if (rdata && rdata->pnode) { 1001 ndlp = rdata->pnode; 1002 1003 /* Make sure we have the right NPortID if one is specified */ 1004 if (phba->lpfc_injerr_nportid && 1005 (phba->lpfc_injerr_nportid != ndlp->nlp_DID)) 1006 return 0; 1007 1008 /* 1009 * Make sure we have the right WWPN if one is specified. 1010 * wwn[0] should be a non-zero NAA in a good WWPN. 1011 */ 1012 if (phba->lpfc_injerr_wwpn.u.wwn[0] && 1013 (memcmp(&ndlp->nlp_portname, &phba->lpfc_injerr_wwpn, 1014 sizeof(struct lpfc_name)) != 0)) 1015 return 0; 1016 } 1017 1018 /* Setup a ptr to the protection data if the SCSI host provides it */ 1019 if (sgpe) { 1020 src = (struct scsi_dif_tuple *)sg_virt(sgpe); 1021 src += blockoff; 1022 lpfc_cmd = (struct lpfc_io_buf *)sc->host_scribble; 1023 } 1024 1025 /* Should we change the Reference Tag */ 1026 if (reftag) { 1027 if (phba->lpfc_injerr_wref_cnt) { 1028 switch (op) { 1029 case SCSI_PROT_WRITE_PASS: 1030 if (src) { 1031 /* 1032 * For WRITE_PASS, force the error 1033 * to be sent on the wire. It should 1034 * be detected by the Target. 1035 * If blockoff != 0 error will be 1036 * inserted in middle of the IO. 1037 */ 1038 1039 lpfc_printf_log(phba, KERN_ERR, 1040 LOG_TRACE_EVENT, 1041 "9076 BLKGRD: Injecting reftag error: " 1042 "write lba x%lx + x%x oldrefTag x%x\n", 1043 (unsigned long)lba, blockoff, 1044 be32_to_cpu(src->ref_tag)); 1045 1046 /* 1047 * Save the old ref_tag so we can 1048 * restore it on completion. 1049 */ 1050 if (lpfc_cmd) { 1051 lpfc_cmd->prot_data_type = 1052 LPFC_INJERR_REFTAG; 1053 lpfc_cmd->prot_data_segment = 1054 src; 1055 lpfc_cmd->prot_data = 1056 src->ref_tag; 1057 } 1058 src->ref_tag = cpu_to_be32(0xDEADBEEF); 1059 phba->lpfc_injerr_wref_cnt--; 1060 if (phba->lpfc_injerr_wref_cnt == 0) { 1061 phba->lpfc_injerr_nportid = 0; 1062 phba->lpfc_injerr_lba = 1063 LPFC_INJERR_LBA_OFF; 1064 memset(&phba->lpfc_injerr_wwpn, 1065 0, sizeof(struct lpfc_name)); 1066 } 1067 rc = BG_ERR_TGT | BG_ERR_CHECK; 1068 1069 break; 1070 } 1071 fallthrough; 1072 case SCSI_PROT_WRITE_INSERT: 1073 /* 1074 * For WRITE_INSERT, force the error 1075 * to be sent on the wire. It should be 1076 * detected by the Target. 1077 */ 1078 /* DEADBEEF will be the reftag on the wire */ 1079 *reftag = 0xDEADBEEF; 1080 phba->lpfc_injerr_wref_cnt--; 1081 if (phba->lpfc_injerr_wref_cnt == 0) { 1082 phba->lpfc_injerr_nportid = 0; 1083 phba->lpfc_injerr_lba = 1084 LPFC_INJERR_LBA_OFF; 1085 memset(&phba->lpfc_injerr_wwpn, 1086 0, sizeof(struct lpfc_name)); 1087 } 1088 rc = BG_ERR_TGT | BG_ERR_CHECK; 1089 1090 lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT, 1091 "9078 BLKGRD: Injecting reftag error: " 1092 "write lba x%lx\n", (unsigned long)lba); 1093 break; 1094 case SCSI_PROT_WRITE_STRIP: 1095 /* 1096 * For WRITE_STRIP and WRITE_PASS, 1097 * force the error on data 1098 * being copied from SLI-Host to SLI-Port. 1099 */ 1100 *reftag = 0xDEADBEEF; 1101 phba->lpfc_injerr_wref_cnt--; 1102 if (phba->lpfc_injerr_wref_cnt == 0) { 1103 phba->lpfc_injerr_nportid = 0; 1104 phba->lpfc_injerr_lba = 1105 LPFC_INJERR_LBA_OFF; 1106 memset(&phba->lpfc_injerr_wwpn, 1107 0, sizeof(struct lpfc_name)); 1108 } 1109 rc = BG_ERR_INIT; 1110 1111 lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT, 1112 "9077 BLKGRD: Injecting reftag error: " 1113 "write lba x%lx\n", (unsigned long)lba); 1114 break; 1115 } 1116 } 1117 if (phba->lpfc_injerr_rref_cnt) { 1118 switch (op) { 1119 case SCSI_PROT_READ_INSERT: 1120 case SCSI_PROT_READ_STRIP: 1121 case SCSI_PROT_READ_PASS: 1122 /* 1123 * For READ_STRIP and READ_PASS, force the 1124 * error on data being read off the wire. It 1125 * should force an IO error to the driver. 1126 */ 1127 *reftag = 0xDEADBEEF; 1128 phba->lpfc_injerr_rref_cnt--; 1129 if (phba->lpfc_injerr_rref_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_INIT; 1137 1138 lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT, 1139 "9079 BLKGRD: Injecting reftag error: " 1140 "read lba x%lx\n", (unsigned long)lba); 1141 break; 1142 } 1143 } 1144 } 1145 1146 /* Should we change the Application Tag */ 1147 if (apptag) { 1148 if (phba->lpfc_injerr_wapp_cnt) { 1149 switch (op) { 1150 case SCSI_PROT_WRITE_PASS: 1151 if (src) { 1152 /* 1153 * For WRITE_PASS, force the error 1154 * to be sent on the wire. It should 1155 * be detected by the Target. 1156 * If blockoff != 0 error will be 1157 * inserted in middle of the IO. 1158 */ 1159 1160 lpfc_printf_log(phba, KERN_ERR, 1161 LOG_TRACE_EVENT, 1162 "9080 BLKGRD: Injecting apptag error: " 1163 "write lba x%lx + x%x oldappTag x%x\n", 1164 (unsigned long)lba, blockoff, 1165 be16_to_cpu(src->app_tag)); 1166 1167 /* 1168 * Save the old app_tag so we can 1169 * restore it on completion. 1170 */ 1171 if (lpfc_cmd) { 1172 lpfc_cmd->prot_data_type = 1173 LPFC_INJERR_APPTAG; 1174 lpfc_cmd->prot_data_segment = 1175 src; 1176 lpfc_cmd->prot_data = 1177 src->app_tag; 1178 } 1179 src->app_tag = cpu_to_be16(0xDEAD); 1180 phba->lpfc_injerr_wapp_cnt--; 1181 if (phba->lpfc_injerr_wapp_cnt == 0) { 1182 phba->lpfc_injerr_nportid = 0; 1183 phba->lpfc_injerr_lba = 1184 LPFC_INJERR_LBA_OFF; 1185 memset(&phba->lpfc_injerr_wwpn, 1186 0, sizeof(struct lpfc_name)); 1187 } 1188 rc = BG_ERR_TGT | BG_ERR_CHECK; 1189 break; 1190 } 1191 fallthrough; 1192 case SCSI_PROT_WRITE_INSERT: 1193 /* 1194 * For WRITE_INSERT, force the 1195 * error to be sent on the wire. It should be 1196 * detected by the Target. 1197 */ 1198 /* DEAD will be the apptag on the wire */ 1199 *apptag = 0xDEAD; 1200 phba->lpfc_injerr_wapp_cnt--; 1201 if (phba->lpfc_injerr_wapp_cnt == 0) { 1202 phba->lpfc_injerr_nportid = 0; 1203 phba->lpfc_injerr_lba = 1204 LPFC_INJERR_LBA_OFF; 1205 memset(&phba->lpfc_injerr_wwpn, 1206 0, sizeof(struct lpfc_name)); 1207 } 1208 rc = BG_ERR_TGT | BG_ERR_CHECK; 1209 1210 lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT, 1211 "0813 BLKGRD: Injecting apptag error: " 1212 "write lba x%lx\n", (unsigned long)lba); 1213 break; 1214 case SCSI_PROT_WRITE_STRIP: 1215 /* 1216 * For WRITE_STRIP and WRITE_PASS, 1217 * force the error on data 1218 * being copied from SLI-Host to SLI-Port. 1219 */ 1220 *apptag = 0xDEAD; 1221 phba->lpfc_injerr_wapp_cnt--; 1222 if (phba->lpfc_injerr_wapp_cnt == 0) { 1223 phba->lpfc_injerr_nportid = 0; 1224 phba->lpfc_injerr_lba = 1225 LPFC_INJERR_LBA_OFF; 1226 memset(&phba->lpfc_injerr_wwpn, 1227 0, sizeof(struct lpfc_name)); 1228 } 1229 rc = BG_ERR_INIT; 1230 1231 lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT, 1232 "0812 BLKGRD: Injecting apptag error: " 1233 "write lba x%lx\n", (unsigned long)lba); 1234 break; 1235 } 1236 } 1237 if (phba->lpfc_injerr_rapp_cnt) { 1238 switch (op) { 1239 case SCSI_PROT_READ_INSERT: 1240 case SCSI_PROT_READ_STRIP: 1241 case SCSI_PROT_READ_PASS: 1242 /* 1243 * For READ_STRIP and READ_PASS, force the 1244 * error on data being read off the wire. It 1245 * should force an IO error to the driver. 1246 */ 1247 *apptag = 0xDEAD; 1248 phba->lpfc_injerr_rapp_cnt--; 1249 if (phba->lpfc_injerr_rapp_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_INIT; 1257 1258 lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT, 1259 "0814 BLKGRD: Injecting apptag error: " 1260 "read lba x%lx\n", (unsigned long)lba); 1261 break; 1262 } 1263 } 1264 } 1265 1266 1267 /* Should we change the Guard Tag */ 1268 if (new_guard) { 1269 if (phba->lpfc_injerr_wgrd_cnt) { 1270 switch (op) { 1271 case SCSI_PROT_WRITE_PASS: 1272 rc = BG_ERR_CHECK; 1273 fallthrough; 1274 1275 case SCSI_PROT_WRITE_INSERT: 1276 /* 1277 * For WRITE_INSERT, force the 1278 * error to be sent on the wire. It should be 1279 * detected by the Target. 1280 */ 1281 phba->lpfc_injerr_wgrd_cnt--; 1282 if (phba->lpfc_injerr_wgrd_cnt == 0) { 1283 phba->lpfc_injerr_nportid = 0; 1284 phba->lpfc_injerr_lba = 1285 LPFC_INJERR_LBA_OFF; 1286 memset(&phba->lpfc_injerr_wwpn, 1287 0, sizeof(struct lpfc_name)); 1288 } 1289 1290 rc |= BG_ERR_TGT | BG_ERR_SWAP; 1291 /* Signals the caller to swap CRC->CSUM */ 1292 1293 lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT, 1294 "0817 BLKGRD: Injecting guard error: " 1295 "write lba x%lx\n", (unsigned long)lba); 1296 break; 1297 case SCSI_PROT_WRITE_STRIP: 1298 /* 1299 * For WRITE_STRIP and WRITE_PASS, 1300 * force the error on data 1301 * being copied from SLI-Host to SLI-Port. 1302 */ 1303 phba->lpfc_injerr_wgrd_cnt--; 1304 if (phba->lpfc_injerr_wgrd_cnt == 0) { 1305 phba->lpfc_injerr_nportid = 0; 1306 phba->lpfc_injerr_lba = 1307 LPFC_INJERR_LBA_OFF; 1308 memset(&phba->lpfc_injerr_wwpn, 1309 0, sizeof(struct lpfc_name)); 1310 } 1311 1312 rc = BG_ERR_INIT | BG_ERR_SWAP; 1313 /* Signals the caller to swap CRC->CSUM */ 1314 1315 lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT, 1316 "0816 BLKGRD: Injecting guard error: " 1317 "write lba x%lx\n", (unsigned long)lba); 1318 break; 1319 } 1320 } 1321 if (phba->lpfc_injerr_rgrd_cnt) { 1322 switch (op) { 1323 case SCSI_PROT_READ_INSERT: 1324 case SCSI_PROT_READ_STRIP: 1325 case SCSI_PROT_READ_PASS: 1326 /* 1327 * For READ_STRIP and READ_PASS, force the 1328 * error on data being read off the wire. It 1329 * should force an IO error to the driver. 1330 */ 1331 phba->lpfc_injerr_rgrd_cnt--; 1332 if (phba->lpfc_injerr_rgrd_cnt == 0) { 1333 phba->lpfc_injerr_nportid = 0; 1334 phba->lpfc_injerr_lba = 1335 LPFC_INJERR_LBA_OFF; 1336 memset(&phba->lpfc_injerr_wwpn, 1337 0, sizeof(struct lpfc_name)); 1338 } 1339 1340 rc = BG_ERR_INIT | BG_ERR_SWAP; 1341 /* Signals the caller to swap CRC->CSUM */ 1342 1343 lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT, 1344 "0818 BLKGRD: Injecting guard error: " 1345 "read lba x%lx\n", (unsigned long)lba); 1346 } 1347 } 1348 } 1349 1350 return rc; 1351} 1352#endif 1353 1354/** 1355 * lpfc_sc_to_bg_opcodes - Determine the BlockGuard opcodes to be used with 1356 * the specified SCSI command. 1357 * @phba: The Hba for which this call is being executed. 1358 * @sc: The SCSI command to examine 1359 * @txop: (out) BlockGuard operation for transmitted data 1360 * @rxop: (out) BlockGuard operation for received data 1361 * 1362 * Returns: zero on success; non-zero if tx and/or rx op cannot be determined 1363 * 1364 **/ 1365static int 1366lpfc_sc_to_bg_opcodes(struct lpfc_hba *phba, struct scsi_cmnd *sc, 1367 uint8_t *txop, uint8_t *rxop) 1368{ 1369 uint8_t ret = 0; 1370 1371 if (sc->prot_flags & SCSI_PROT_IP_CHECKSUM) { 1372 switch (scsi_get_prot_op(sc)) { 1373 case SCSI_PROT_READ_INSERT: 1374 case SCSI_PROT_WRITE_STRIP: 1375 *rxop = BG_OP_IN_NODIF_OUT_CSUM; 1376 *txop = BG_OP_IN_CSUM_OUT_NODIF; 1377 break; 1378 1379 case SCSI_PROT_READ_STRIP: 1380 case SCSI_PROT_WRITE_INSERT: 1381 *rxop = BG_OP_IN_CRC_OUT_NODIF; 1382 *txop = BG_OP_IN_NODIF_OUT_CRC; 1383 break; 1384 1385 case SCSI_PROT_READ_PASS: 1386 case SCSI_PROT_WRITE_PASS: 1387 *rxop = BG_OP_IN_CRC_OUT_CSUM; 1388 *txop = BG_OP_IN_CSUM_OUT_CRC; 1389 break; 1390 1391 case SCSI_PROT_NORMAL: 1392 default: 1393 lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT, 1394 "9063 BLKGRD: Bad op/guard:%d/IP combination\n", 1395 scsi_get_prot_op(sc)); 1396 ret = 1; 1397 break; 1398 1399 } 1400 } else { 1401 switch (scsi_get_prot_op(sc)) { 1402 case SCSI_PROT_READ_STRIP: 1403 case SCSI_PROT_WRITE_INSERT: 1404 *rxop = BG_OP_IN_CRC_OUT_NODIF; 1405 *txop = BG_OP_IN_NODIF_OUT_CRC; 1406 break; 1407 1408 case SCSI_PROT_READ_PASS: 1409 case SCSI_PROT_WRITE_PASS: 1410 *rxop = BG_OP_IN_CRC_OUT_CRC; 1411 *txop = BG_OP_IN_CRC_OUT_CRC; 1412 break; 1413 1414 case SCSI_PROT_READ_INSERT: 1415 case SCSI_PROT_WRITE_STRIP: 1416 *rxop = BG_OP_IN_NODIF_OUT_CRC; 1417 *txop = BG_OP_IN_CRC_OUT_NODIF; 1418 break; 1419 1420 case SCSI_PROT_NORMAL: 1421 default: 1422 lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT, 1423 "9075 BLKGRD: Bad op/guard:%d/CRC combination\n", 1424 scsi_get_prot_op(sc)); 1425 ret = 1; 1426 break; 1427 } 1428 } 1429 1430 return ret; 1431} 1432 1433#ifdef CONFIG_SCSI_LPFC_DEBUG_FS 1434/** 1435 * lpfc_bg_err_opcodes - reDetermine the BlockGuard opcodes to be used with 1436 * the specified SCSI command in order to force a guard tag error. 1437 * @phba: The Hba for which this call is being executed. 1438 * @sc: The SCSI command to examine 1439 * @txop: (out) BlockGuard operation for transmitted data 1440 * @rxop: (out) BlockGuard operation for received data 1441 * 1442 * Returns: zero on success; non-zero if tx and/or rx op cannot be determined 1443 * 1444 **/ 1445static int 1446lpfc_bg_err_opcodes(struct lpfc_hba *phba, struct scsi_cmnd *sc, 1447 uint8_t *txop, uint8_t *rxop) 1448{ 1449 1450 if (sc->prot_flags & SCSI_PROT_IP_CHECKSUM) { 1451 switch (scsi_get_prot_op(sc)) { 1452 case SCSI_PROT_READ_INSERT: 1453 case SCSI_PROT_WRITE_STRIP: 1454 *rxop = BG_OP_IN_NODIF_OUT_CRC; 1455 *txop = BG_OP_IN_CRC_OUT_NODIF; 1456 break; 1457 1458 case SCSI_PROT_READ_STRIP: 1459 case SCSI_PROT_WRITE_INSERT: 1460 *rxop = BG_OP_IN_CSUM_OUT_NODIF; 1461 *txop = BG_OP_IN_NODIF_OUT_CSUM; 1462 break; 1463 1464 case SCSI_PROT_READ_PASS: 1465 case SCSI_PROT_WRITE_PASS: 1466 *rxop = BG_OP_IN_CSUM_OUT_CRC; 1467 *txop = BG_OP_IN_CRC_OUT_CSUM; 1468 break; 1469 1470 case SCSI_PROT_NORMAL: 1471 default: 1472 break; 1473 1474 } 1475 } else { 1476 switch (scsi_get_prot_op(sc)) { 1477 case SCSI_PROT_READ_STRIP: 1478 case SCSI_PROT_WRITE_INSERT: 1479 *rxop = BG_OP_IN_CSUM_OUT_NODIF; 1480 *txop = BG_OP_IN_NODIF_OUT_CSUM; 1481 break; 1482 1483 case SCSI_PROT_READ_PASS: 1484 case SCSI_PROT_WRITE_PASS: 1485 *rxop = BG_OP_IN_CSUM_OUT_CSUM; 1486 *txop = BG_OP_IN_CSUM_OUT_CSUM; 1487 break; 1488 1489 case SCSI_PROT_READ_INSERT: 1490 case SCSI_PROT_WRITE_STRIP: 1491 *rxop = BG_OP_IN_NODIF_OUT_CSUM; 1492 *txop = BG_OP_IN_CSUM_OUT_NODIF; 1493 break; 1494 1495 case SCSI_PROT_NORMAL: 1496 default: 1497 break; 1498 } 1499 } 1500 1501 return 0; 1502} 1503#endif 1504 1505/** 1506 * lpfc_bg_setup_bpl - Setup BlockGuard BPL with no protection data 1507 * @phba: The Hba for which this call is being executed. 1508 * @sc: pointer to scsi command we're working on 1509 * @bpl: pointer to buffer list for protection groups 1510 * @datasegcnt: number of segments of data that have been dma mapped 1511 * 1512 * This function sets up BPL buffer list for protection groups of 1513 * type LPFC_PG_TYPE_NO_DIF 1514 * 1515 * This is usually used when the HBA is instructed to generate 1516 * DIFs and insert them into data stream (or strip DIF from 1517 * incoming data stream) 1518 * 1519 * The buffer list consists of just one protection group described 1520 * below: 1521 * +-------------------------+ 1522 * start of prot group --> | PDE_5 | 1523 * +-------------------------+ 1524 * | PDE_6 | 1525 * +-------------------------+ 1526 * | Data BDE | 1527 * +-------------------------+ 1528 * |more Data BDE's ... (opt)| 1529 * +-------------------------+ 1530 * 1531 * 1532 * Note: Data s/g buffers have been dma mapped 1533 * 1534 * Returns the number of BDEs added to the BPL. 1535 **/ 1536static int 1537lpfc_bg_setup_bpl(struct lpfc_hba *phba, struct scsi_cmnd *sc, 1538 struct ulp_bde64 *bpl, int datasegcnt) 1539{ 1540 struct scatterlist *sgde = NULL; /* s/g data entry */ 1541 struct lpfc_pde5 *pde5 = NULL; 1542 struct lpfc_pde6 *pde6 = NULL; 1543 dma_addr_t physaddr; 1544 int i = 0, num_bde = 0, status; 1545 int datadir = sc->sc_data_direction; 1546#ifdef CONFIG_SCSI_LPFC_DEBUG_FS 1547 uint32_t rc; 1548#endif 1549 uint32_t checking = 1; 1550 uint32_t reftag; 1551 uint8_t txop, rxop; 1552 1553 status = lpfc_sc_to_bg_opcodes(phba, sc, &txop, &rxop); 1554 if (status) 1555 goto out; 1556 1557 /* extract some info from the scsi command for pde*/ 1558 reftag = scsi_prot_ref_tag(sc); 1559 1560#ifdef CONFIG_SCSI_LPFC_DEBUG_FS 1561 rc = lpfc_bg_err_inject(phba, sc, &reftag, NULL, 1); 1562 if (rc) { 1563 if (rc & BG_ERR_SWAP) 1564 lpfc_bg_err_opcodes(phba, sc, &txop, &rxop); 1565 if (rc & BG_ERR_CHECK) 1566 checking = 0; 1567 } 1568#endif 1569 1570 /* setup PDE5 with what we have */ 1571 pde5 = (struct lpfc_pde5 *) bpl; 1572 memset(pde5, 0, sizeof(struct lpfc_pde5)); 1573 bf_set(pde5_type, pde5, LPFC_PDE5_DESCRIPTOR); 1574 1575 /* Endianness conversion if necessary for PDE5 */ 1576 pde5->word0 = cpu_to_le32(pde5->word0); 1577 pde5->reftag = cpu_to_le32(reftag); 1578 1579 /* advance bpl and increment bde count */ 1580 num_bde++; 1581 bpl++; 1582 pde6 = (struct lpfc_pde6 *) bpl; 1583 1584 /* setup PDE6 with the rest of the info */ 1585 memset(pde6, 0, sizeof(struct lpfc_pde6)); 1586 bf_set(pde6_type, pde6, LPFC_PDE6_DESCRIPTOR); 1587 bf_set(pde6_optx, pde6, txop); 1588 bf_set(pde6_oprx, pde6, rxop); 1589 1590 /* 1591 * We only need to check the data on READs, for WRITEs 1592 * protection data is automatically generated, not checked. 1593 */ 1594 if (datadir == DMA_FROM_DEVICE) { 1595 if (sc->prot_flags & SCSI_PROT_GUARD_CHECK) 1596 bf_set(pde6_ce, pde6, checking); 1597 else 1598 bf_set(pde6_ce, pde6, 0); 1599 1600 if (sc->prot_flags & SCSI_PROT_REF_CHECK) 1601 bf_set(pde6_re, pde6, checking); 1602 else 1603 bf_set(pde6_re, pde6, 0); 1604 } 1605 bf_set(pde6_ai, pde6, 1); 1606 bf_set(pde6_ae, pde6, 0); 1607 bf_set(pde6_apptagval, pde6, 0); 1608 1609 /* Endianness conversion if necessary for PDE6 */ 1610 pde6->word0 = cpu_to_le32(pde6->word0); 1611 pde6->word1 = cpu_to_le32(pde6->word1); 1612 pde6->word2 = cpu_to_le32(pde6->word2); 1613 1614 /* advance bpl and increment bde count */ 1615 num_bde++; 1616 bpl++; 1617 1618 /* assumption: caller has already run dma_map_sg on command data */ 1619 scsi_for_each_sg(sc, sgde, datasegcnt, i) { 1620 physaddr = sg_dma_address(sgde); 1621 bpl->addrLow = le32_to_cpu(putPaddrLow(physaddr)); 1622 bpl->addrHigh = le32_to_cpu(putPaddrHigh(physaddr)); 1623 bpl->tus.f.bdeSize = sg_dma_len(sgde); 1624 if (datadir == DMA_TO_DEVICE) 1625 bpl->tus.f.bdeFlags = BUFF_TYPE_BDE_64; 1626 else 1627 bpl->tus.f.bdeFlags = BUFF_TYPE_BDE_64I; 1628 bpl->tus.w = le32_to_cpu(bpl->tus.w); 1629 bpl++; 1630 num_bde++; 1631 } 1632 1633out: 1634 return num_bde; 1635} 1636 1637/** 1638 * lpfc_bg_setup_bpl_prot - Setup BlockGuard BPL with protection data 1639 * @phba: The Hba for which this call is being executed. 1640 * @sc: pointer to scsi command we're working on 1641 * @bpl: pointer to buffer list for protection groups 1642 * @datacnt: number of segments of data that have been dma mapped 1643 * @protcnt: number of segment of protection data that have been dma mapped 1644 * 1645 * This function sets up BPL buffer list for protection groups of 1646 * type LPFC_PG_TYPE_DIF 1647 * 1648 * This is usually used when DIFs are in their own buffers, 1649 * separate from the data. The HBA can then by instructed 1650 * to place the DIFs in the outgoing stream. For read operations, 1651 * The HBA could extract the DIFs and place it in DIF buffers. 1652 * 1653 * The buffer list for this type consists of one or more of the 1654 * protection groups described below: 1655 * +-------------------------+ 1656 * start of first prot group --> | PDE_5 | 1657 * +-------------------------+ 1658 * | PDE_6 | 1659 * +-------------------------+ 1660 * | PDE_7 (Prot BDE) | 1661 * +-------------------------+ 1662 * | Data BDE | 1663 * +-------------------------+ 1664 * |more Data BDE's ... (opt)| 1665 * +-------------------------+ 1666 * start of new prot group --> | PDE_5 | 1667 * +-------------------------+ 1668 * | ... | 1669 * +-------------------------+ 1670 * 1671 * Note: It is assumed that both data and protection s/g buffers have been 1672 * mapped for DMA 1673 * 1674 * Returns the number of BDEs added to the BPL. 1675 **/ 1676static int 1677lpfc_bg_setup_bpl_prot(struct lpfc_hba *phba, struct scsi_cmnd *sc, 1678 struct ulp_bde64 *bpl, int datacnt, int protcnt) 1679{ 1680 struct scatterlist *sgde = NULL; /* s/g data entry */ 1681 struct scatterlist *sgpe = NULL; /* s/g prot entry */ 1682 struct lpfc_pde5 *pde5 = NULL; 1683 struct lpfc_pde6 *pde6 = NULL; 1684 struct lpfc_pde7 *pde7 = NULL; 1685 dma_addr_t dataphysaddr, protphysaddr; 1686 unsigned short curr_prot = 0; 1687 unsigned int split_offset; 1688 unsigned int protgroup_len, protgroup_offset = 0, protgroup_remainder; 1689 unsigned int protgrp_blks, protgrp_bytes; 1690 unsigned int remainder, subtotal; 1691 int status; 1692 int datadir = sc->sc_data_direction; 1693 unsigned char pgdone = 0, alldone = 0; 1694 unsigned blksize; 1695#ifdef CONFIG_SCSI_LPFC_DEBUG_FS 1696 uint32_t rc; 1697#endif 1698 uint32_t checking = 1; 1699 uint32_t reftag; 1700 uint8_t txop, rxop; 1701 int num_bde = 0; 1702 1703 sgpe = scsi_prot_sglist(sc); 1704 sgde = scsi_sglist(sc); 1705 1706 if (!sgpe || !sgde) { 1707 lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT, 1708 "9020 Invalid s/g entry: data=x%px prot=x%px\n", 1709 sgpe, sgde); 1710 return 0; 1711 } 1712 1713 status = lpfc_sc_to_bg_opcodes(phba, sc, &txop, &rxop); 1714 if (status) 1715 goto out; 1716 1717 /* extract some info from the scsi command */ 1718 blksize = scsi_prot_interval(sc); 1719 reftag = scsi_prot_ref_tag(sc); 1720 1721#ifdef CONFIG_SCSI_LPFC_DEBUG_FS 1722 rc = lpfc_bg_err_inject(phba, sc, &reftag, NULL, 1); 1723 if (rc) { 1724 if (rc & BG_ERR_SWAP) 1725 lpfc_bg_err_opcodes(phba, sc, &txop, &rxop); 1726 if (rc & BG_ERR_CHECK) 1727 checking = 0; 1728 } 1729#endif 1730 1731 split_offset = 0; 1732 do { 1733 /* Check to see if we ran out of space */ 1734 if (num_bde >= (phba->cfg_total_seg_cnt - 2)) 1735 return num_bde + 3; 1736 1737 /* setup PDE5 with what we have */ 1738 pde5 = (struct lpfc_pde5 *) bpl; 1739 memset(pde5, 0, sizeof(struct lpfc_pde5)); 1740 bf_set(pde5_type, pde5, LPFC_PDE5_DESCRIPTOR); 1741 1742 /* Endianness conversion if necessary for PDE5 */ 1743 pde5->word0 = cpu_to_le32(pde5->word0); 1744 pde5->reftag = cpu_to_le32(reftag); 1745 1746 /* advance bpl and increment bde count */ 1747 num_bde++; 1748 bpl++; 1749 pde6 = (struct lpfc_pde6 *) bpl; 1750 1751 /* setup PDE6 with the rest of the info */ 1752 memset(pde6, 0, sizeof(struct lpfc_pde6)); 1753 bf_set(pde6_type, pde6, LPFC_PDE6_DESCRIPTOR); 1754 bf_set(pde6_optx, pde6, txop); 1755 bf_set(pde6_oprx, pde6, rxop); 1756 1757 if (sc->prot_flags & SCSI_PROT_GUARD_CHECK) 1758 bf_set(pde6_ce, pde6, checking); 1759 else 1760 bf_set(pde6_ce, pde6, 0); 1761 1762 if (sc->prot_flags & SCSI_PROT_REF_CHECK) 1763 bf_set(pde6_re, pde6, checking); 1764 else 1765 bf_set(pde6_re, pde6, 0); 1766 1767 bf_set(pde6_ai, pde6, 1); 1768 bf_set(pde6_ae, pde6, 0); 1769 bf_set(pde6_apptagval, pde6, 0); 1770 1771 /* Endianness conversion if necessary for PDE6 */ 1772 pde6->word0 = cpu_to_le32(pde6->word0); 1773 pde6->word1 = cpu_to_le32(pde6->word1); 1774 pde6->word2 = cpu_to_le32(pde6->word2); 1775 1776 /* advance bpl and increment bde count */ 1777 num_bde++; 1778 bpl++; 1779 1780 /* setup the first BDE that points to protection buffer */ 1781 protphysaddr = sg_dma_address(sgpe) + protgroup_offset; 1782 protgroup_len = sg_dma_len(sgpe) - protgroup_offset; 1783 1784 /* must be integer multiple of the DIF block length */ 1785 BUG_ON(protgroup_len % 8); 1786 1787 pde7 = (struct lpfc_pde7 *) bpl; 1788 memset(pde7, 0, sizeof(struct lpfc_pde7)); 1789 bf_set(pde7_type, pde7, LPFC_PDE7_DESCRIPTOR); 1790 1791 pde7->addrHigh = le32_to_cpu(putPaddrHigh(protphysaddr)); 1792 pde7->addrLow = le32_to_cpu(putPaddrLow(protphysaddr)); 1793 1794 protgrp_blks = protgroup_len / 8; 1795 protgrp_bytes = protgrp_blks * blksize; 1796 1797 /* check if this pde is crossing the 4K boundary; if so split */ 1798 if ((pde7->addrLow & 0xfff) + protgroup_len > 0x1000) { 1799 protgroup_remainder = 0x1000 - (pde7->addrLow & 0xfff); 1800 protgroup_offset += protgroup_remainder; 1801 protgrp_blks = protgroup_remainder / 8; 1802 protgrp_bytes = protgrp_blks * blksize; 1803 } else { 1804 protgroup_offset = 0; 1805 curr_prot++; 1806 } 1807 1808 num_bde++; 1809 1810 /* setup BDE's for data blocks associated with DIF data */ 1811 pgdone = 0; 1812 subtotal = 0; /* total bytes processed for current prot grp */ 1813 while (!pgdone) { 1814 /* Check to see if we ran out of space */ 1815 if (num_bde >= phba->cfg_total_seg_cnt) 1816 return num_bde + 1; 1817 1818 if (!sgde) { 1819 lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT, 1820 "9065 BLKGRD:%s Invalid data segment\n", 1821 __func__); 1822 return 0; 1823 } 1824 bpl++; 1825 dataphysaddr = sg_dma_address(sgde) + split_offset; 1826 bpl->addrLow = le32_to_cpu(putPaddrLow(dataphysaddr)); 1827 bpl->addrHigh = le32_to_cpu(putPaddrHigh(dataphysaddr)); 1828 1829 remainder = sg_dma_len(sgde) - split_offset; 1830 1831 if ((subtotal + remainder) <= protgrp_bytes) { 1832 /* we can use this whole buffer */ 1833 bpl->tus.f.bdeSize = remainder; 1834 split_offset = 0; 1835 1836 if ((subtotal + remainder) == protgrp_bytes) 1837 pgdone = 1; 1838 } else { 1839 /* must split this buffer with next prot grp */ 1840 bpl->tus.f.bdeSize = protgrp_bytes - subtotal; 1841 split_offset += bpl->tus.f.bdeSize; 1842 } 1843 1844 subtotal += bpl->tus.f.bdeSize; 1845 1846 if (datadir == DMA_TO_DEVICE) 1847 bpl->tus.f.bdeFlags = BUFF_TYPE_BDE_64; 1848 else 1849 bpl->tus.f.bdeFlags = BUFF_TYPE_BDE_64I; 1850 bpl->tus.w = le32_to_cpu(bpl->tus.w); 1851 1852 num_bde++; 1853 1854 if (split_offset) 1855 break; 1856 1857 /* Move to the next s/g segment if possible */ 1858 sgde = sg_next(sgde); 1859 1860 } 1861 1862 if (protgroup_offset) { 1863 /* update the reference tag */ 1864 reftag += protgrp_blks; 1865 bpl++; 1866 continue; 1867 } 1868 1869 /* are we done ? */ 1870 if (curr_prot == protcnt) { 1871 alldone = 1; 1872 } else if (curr_prot < protcnt) { 1873 /* advance to next prot buffer */ 1874 sgpe = sg_next(sgpe); 1875 bpl++; 1876 1877 /* update the reference tag */ 1878 reftag += protgrp_blks; 1879 } else { 1880 /* if we're here, we have a bug */ 1881 lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT, 1882 "9054 BLKGRD: bug in %s\n", __func__); 1883 } 1884 1885 } while (!alldone); 1886out: 1887 1888 return num_bde; 1889} 1890 1891/** 1892 * lpfc_bg_setup_sgl - Setup BlockGuard SGL with no protection data 1893 * @phba: The Hba for which this call is being executed. 1894 * @sc: pointer to scsi command we're working on 1895 * @sgl: pointer to buffer list for protection groups 1896 * @datasegcnt: number of segments of data that have been dma mapped 1897 * @lpfc_cmd: lpfc scsi command object pointer. 1898 * 1899 * This function sets up SGL buffer list for protection groups of 1900 * type LPFC_PG_TYPE_NO_DIF 1901 * 1902 * This is usually used when the HBA is instructed to generate 1903 * DIFs and insert them into data stream (or strip DIF from 1904 * incoming data stream) 1905 * 1906 * The buffer list consists of just one protection group described 1907 * below: 1908 * +-------------------------+ 1909 * start of prot group --> | DI_SEED | 1910 * +-------------------------+ 1911 * | Data SGE | 1912 * +-------------------------+ 1913 * |more Data SGE's ... (opt)| 1914 * +-------------------------+ 1915 * 1916 * 1917 * Note: Data s/g buffers have been dma mapped 1918 * 1919 * Returns the number of SGEs added to the SGL. 1920 **/ 1921static uint32_t 1922lpfc_bg_setup_sgl(struct lpfc_hba *phba, struct scsi_cmnd *sc, 1923 struct sli4_sge *sgl, int datasegcnt, 1924 struct lpfc_io_buf *lpfc_cmd) 1925{ 1926 struct scatterlist *sgde = NULL; /* s/g data entry */ 1927 struct sli4_sge_diseed *diseed = NULL; 1928 dma_addr_t physaddr; 1929 int i = 0, status; 1930 uint32_t reftag, num_sge = 0; 1931 uint8_t txop, rxop; 1932#ifdef CONFIG_SCSI_LPFC_DEBUG_FS 1933 uint32_t rc; 1934#endif 1935 uint32_t checking = 1; 1936 uint32_t dma_len; 1937 uint32_t dma_offset = 0; 1938 struct sli4_hybrid_sgl *sgl_xtra = NULL; 1939 int j; 1940 bool lsp_just_set = false; 1941 1942 status = lpfc_sc_to_bg_opcodes(phba, sc, &txop, &rxop); 1943 if (status) 1944 goto out; 1945 1946 /* extract some info from the scsi command for pde*/ 1947 reftag = scsi_prot_ref_tag(sc); 1948 1949#ifdef CONFIG_SCSI_LPFC_DEBUG_FS 1950 rc = lpfc_bg_err_inject(phba, sc, &reftag, NULL, 1); 1951 if (rc) { 1952 if (rc & BG_ERR_SWAP) 1953 lpfc_bg_err_opcodes(phba, sc, &txop, &rxop); 1954 if (rc & BG_ERR_CHECK) 1955 checking = 0; 1956 } 1957#endif 1958 1959 /* setup DISEED with what we have */ 1960 diseed = (struct sli4_sge_diseed *) sgl; 1961 memset(diseed, 0, sizeof(struct sli4_sge_diseed)); 1962 bf_set(lpfc_sli4_sge_type, sgl, LPFC_SGE_TYPE_DISEED); 1963 1964 /* Endianness conversion if necessary */ 1965 diseed->ref_tag = cpu_to_le32(reftag); 1966 diseed->ref_tag_tran = diseed->ref_tag; 1967 1968 /* 1969 * We only need to check the data on READs, for WRITEs 1970 * protection data is automatically generated, not checked. 1971 */ 1972 if (sc->sc_data_direction == DMA_FROM_DEVICE) { 1973 if (sc->prot_flags & SCSI_PROT_GUARD_CHECK) 1974 bf_set(lpfc_sli4_sge_dif_ce, diseed, checking); 1975 else 1976 bf_set(lpfc_sli4_sge_dif_ce, diseed, 0); 1977 1978 if (sc->prot_flags & SCSI_PROT_REF_CHECK) 1979 bf_set(lpfc_sli4_sge_dif_re, diseed, checking); 1980 else 1981 bf_set(lpfc_sli4_sge_dif_re, diseed, 0); 1982 } 1983 1984 /* setup DISEED with the rest of the info */ 1985 bf_set(lpfc_sli4_sge_dif_optx, diseed, txop); 1986 bf_set(lpfc_sli4_sge_dif_oprx, diseed, rxop); 1987 1988 bf_set(lpfc_sli4_sge_dif_ai, diseed, 1); 1989 bf_set(lpfc_sli4_sge_dif_me, diseed, 0); 1990 1991 /* Endianness conversion if necessary for DISEED */ 1992 diseed->word2 = cpu_to_le32(diseed->word2); 1993 diseed->word3 = cpu_to_le32(diseed->word3); 1994 1995 /* advance bpl and increment sge count */ 1996 num_sge++; 1997 sgl++; 1998 1999 /* assumption: caller has already run dma_map_sg on command data */ 2000 sgde = scsi_sglist(sc); 2001 j = 3; 2002 for (i = 0; i < datasegcnt; i++) { 2003 /* clear it */ 2004 sgl->word2 = 0; 2005 2006 /* do we need to expand the segment */ 2007 if (!lsp_just_set && !((j + 1) % phba->border_sge_num) && 2008 ((datasegcnt - 1) != i)) { 2009 /* set LSP type */ 2010 bf_set(lpfc_sli4_sge_type, sgl, LPFC_SGE_TYPE_LSP); 2011 2012 sgl_xtra = lpfc_get_sgl_per_hdwq(phba, lpfc_cmd); 2013 2014 if (unlikely(!sgl_xtra)) { 2015 lpfc_cmd->seg_cnt = 0; 2016 return 0; 2017 } 2018 sgl->addr_lo = cpu_to_le32(putPaddrLow( 2019 sgl_xtra->dma_phys_sgl)); 2020 sgl->addr_hi = cpu_to_le32(putPaddrHigh( 2021 sgl_xtra->dma_phys_sgl)); 2022 2023 } else { 2024 bf_set(lpfc_sli4_sge_type, sgl, LPFC_SGE_TYPE_DATA); 2025 } 2026 2027 if (!(bf_get(lpfc_sli4_sge_type, sgl) & LPFC_SGE_TYPE_LSP)) { 2028 if ((datasegcnt - 1) == i) 2029 bf_set(lpfc_sli4_sge_last, sgl, 1); 2030 physaddr = sg_dma_address(sgde); 2031 dma_len = sg_dma_len(sgde); 2032 sgl->addr_lo = cpu_to_le32(putPaddrLow(physaddr)); 2033 sgl->addr_hi = cpu_to_le32(putPaddrHigh(physaddr)); 2034 2035 bf_set(lpfc_sli4_sge_offset, sgl, dma_offset); 2036 sgl->word2 = cpu_to_le32(sgl->word2); 2037 sgl->sge_len = cpu_to_le32(dma_len); 2038 2039 dma_offset += dma_len; 2040 sgde = sg_next(sgde); 2041 2042 sgl++; 2043 num_sge++; 2044 lsp_just_set = false; 2045 2046 } else { 2047 sgl->word2 = cpu_to_le32(sgl->word2); 2048 sgl->sge_len = cpu_to_le32(phba->cfg_sg_dma_buf_size); 2049 2050 sgl = (struct sli4_sge *)sgl_xtra->dma_sgl; 2051 i = i - 1; 2052 2053 lsp_just_set = true; 2054 } 2055 2056 j++; 2057 2058 } 2059 2060out: 2061 return num_sge; 2062} 2063 2064/** 2065 * lpfc_bg_setup_sgl_prot - Setup BlockGuard SGL with protection data 2066 * @phba: The Hba for which this call is being executed. 2067 * @sc: pointer to scsi command we're working on 2068 * @sgl: pointer to buffer list for protection groups 2069 * @datacnt: number of segments of data that have been dma mapped 2070 * @protcnt: number of segment of protection data that have been dma mapped 2071 * @lpfc_cmd: lpfc scsi command object pointer. 2072 * 2073 * This function sets up SGL buffer list for protection groups of 2074 * type LPFC_PG_TYPE_DIF 2075 * 2076 * This is usually used when DIFs are in their own buffers, 2077 * separate from the data. The HBA can then by instructed 2078 * to place the DIFs in the outgoing stream. For read operations, 2079 * The HBA could extract the DIFs and place it in DIF buffers. 2080 * 2081 * The buffer list for this type consists of one or more of the 2082 * protection groups described below: 2083 * +-------------------------+ 2084 * start of first prot group --> | DISEED | 2085 * +-------------------------+ 2086 * | DIF (Prot SGE) | 2087 * +-------------------------+ 2088 * | Data SGE | 2089 * +-------------------------+ 2090 * |more Data SGE's ... (opt)| 2091 * +-------------------------+ 2092 * start of new prot group --> | DISEED | 2093 * +-------------------------+ 2094 * | ... | 2095 * +-------------------------+ 2096 * 2097 * Note: It is assumed that both data and protection s/g buffers have been 2098 * mapped for DMA 2099 * 2100 * Returns the number of SGEs added to the SGL. 2101 **/ 2102static uint32_t 2103lpfc_bg_setup_sgl_prot(struct lpfc_hba *phba, struct scsi_cmnd *sc, 2104 struct sli4_sge *sgl, int datacnt, int protcnt, 2105 struct lpfc_io_buf *lpfc_cmd) 2106{ 2107 struct scatterlist *sgde = NULL; /* s/g data entry */ 2108 struct scatterlist *sgpe = NULL; /* s/g prot entry */ 2109 struct sli4_sge_diseed *diseed = NULL; 2110 dma_addr_t dataphysaddr, protphysaddr; 2111 unsigned short curr_prot = 0; 2112 unsigned int split_offset; 2113 unsigned int protgroup_len, protgroup_offset = 0, protgroup_remainder; 2114 unsigned int protgrp_blks, protgrp_bytes; 2115 unsigned int remainder, subtotal; 2116 int status; 2117 unsigned char pgdone = 0, alldone = 0; 2118 unsigned blksize; 2119 uint32_t reftag; 2120 uint8_t txop, rxop; 2121 uint32_t dma_len; 2122#ifdef CONFIG_SCSI_LPFC_DEBUG_FS 2123 uint32_t rc; 2124#endif 2125 uint32_t checking = 1; 2126 uint32_t dma_offset = 0, num_sge = 0; 2127 int j = 2; 2128 struct sli4_hybrid_sgl *sgl_xtra = NULL; 2129 2130 sgpe = scsi_prot_sglist(sc); 2131 sgde = scsi_sglist(sc); 2132 2133 if (!sgpe || !sgde) { 2134 lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT, 2135 "9082 Invalid s/g entry: data=x%px prot=x%px\n", 2136 sgpe, sgde); 2137 return 0; 2138 } 2139 2140 status = lpfc_sc_to_bg_opcodes(phba, sc, &txop, &rxop); 2141 if (status) 2142 goto out; 2143 2144 /* extract some info from the scsi command */ 2145 blksize = scsi_prot_interval(sc); 2146 reftag = scsi_prot_ref_tag(sc); 2147 2148#ifdef CONFIG_SCSI_LPFC_DEBUG_FS 2149 rc = lpfc_bg_err_inject(phba, sc, &reftag, NULL, 1); 2150 if (rc) { 2151 if (rc & BG_ERR_SWAP) 2152 lpfc_bg_err_opcodes(phba, sc, &txop, &rxop); 2153 if (rc & BG_ERR_CHECK) 2154 checking = 0; 2155 } 2156#endif 2157 2158 split_offset = 0; 2159 do { 2160 /* Check to see if we ran out of space */ 2161 if ((num_sge >= (phba->cfg_total_seg_cnt - 2)) && 2162 !(phba->cfg_xpsgl)) 2163 return num_sge + 3; 2164 2165 /* DISEED and DIF have to be together */ 2166 if (!((j + 1) % phba->border_sge_num) || 2167 !((j + 2) % phba->border_sge_num) || 2168 !((j + 3) % phba->border_sge_num)) { 2169 sgl->word2 = 0; 2170 2171 /* set LSP type */ 2172 bf_set(lpfc_sli4_sge_type, sgl, LPFC_SGE_TYPE_LSP); 2173 2174 sgl_xtra = lpfc_get_sgl_per_hdwq(phba, lpfc_cmd); 2175 2176 if (unlikely(!sgl_xtra)) { 2177 goto out; 2178 } else { 2179 sgl->addr_lo = cpu_to_le32(putPaddrLow( 2180 sgl_xtra->dma_phys_sgl)); 2181 sgl->addr_hi = cpu_to_le32(putPaddrHigh( 2182 sgl_xtra->dma_phys_sgl)); 2183 } 2184 2185 sgl->word2 = cpu_to_le32(sgl->word2); 2186 sgl->sge_len = cpu_to_le32(phba->cfg_sg_dma_buf_size); 2187 2188 sgl = (struct sli4_sge *)sgl_xtra->dma_sgl; 2189 j = 0; 2190 } 2191 2192 /* setup DISEED with what we have */ 2193 diseed = (struct sli4_sge_diseed *) sgl; 2194 memset(diseed, 0, sizeof(struct sli4_sge_diseed)); 2195 bf_set(lpfc_sli4_sge_type, sgl, LPFC_SGE_TYPE_DISEED); 2196 2197 /* Endianness conversion if necessary */ 2198 diseed->ref_tag = cpu_to_le32(reftag); 2199 diseed->ref_tag_tran = diseed->ref_tag; 2200 2201 if (sc->prot_flags & SCSI_PROT_GUARD_CHECK) { 2202 bf_set(lpfc_sli4_sge_dif_ce, diseed, checking); 2203 } else { 2204 bf_set(lpfc_sli4_sge_dif_ce, diseed, 0); 2205 /* 2206 * When in this mode, the hardware will replace 2207 * the guard tag from the host with a 2208 * newly generated good CRC for the wire. 2209 * Switch to raw mode here to avoid this 2210 * behavior. What the host sends gets put on the wire. 2211 */ 2212 if (txop == BG_OP_IN_CRC_OUT_CRC) { 2213 txop = BG_OP_RAW_MODE; 2214 rxop = BG_OP_RAW_MODE; 2215 } 2216 } 2217 2218 2219 if (sc->prot_flags & SCSI_PROT_REF_CHECK) 2220 bf_set(lpfc_sli4_sge_dif_re, diseed, checking); 2221 else 2222 bf_set(lpfc_sli4_sge_dif_re, diseed, 0); 2223 2224 /* setup DISEED with the rest of the info */ 2225 bf_set(lpfc_sli4_sge_dif_optx, diseed, txop); 2226 bf_set(lpfc_sli4_sge_dif_oprx, diseed, rxop); 2227 2228 bf_set(lpfc_sli4_sge_dif_ai, diseed, 1); 2229 bf_set(lpfc_sli4_sge_dif_me, diseed, 0); 2230 2231 /* Endianness conversion if necessary for DISEED */ 2232 diseed->word2 = cpu_to_le32(diseed->word2); 2233 diseed->word3 = cpu_to_le32(diseed->word3); 2234 2235 /* advance sgl and increment bde count */ 2236 num_sge++; 2237 2238 sgl++; 2239 j++; 2240 2241 /* setup the first BDE that points to protection buffer */ 2242 protphysaddr = sg_dma_address(sgpe) + protgroup_offset; 2243 protgroup_len = sg_dma_len(sgpe) - protgroup_offset; 2244 2245 /* must be integer multiple of the DIF block length */ 2246 BUG_ON(protgroup_len % 8); 2247 2248 /* Now setup DIF SGE */ 2249 sgl->word2 = 0; 2250 bf_set(lpfc_sli4_sge_type, sgl, LPFC_SGE_TYPE_DIF); 2251 sgl->addr_hi = le32_to_cpu(putPaddrHigh(protphysaddr)); 2252 sgl->addr_lo = le32_to_cpu(putPaddrLow(protphysaddr)); 2253 sgl->word2 = cpu_to_le32(sgl->word2); 2254 sgl->sge_len = 0; 2255 2256 protgrp_blks = protgroup_len / 8; 2257 protgrp_bytes = protgrp_blks * blksize; 2258 2259 /* check if DIF SGE is crossing the 4K boundary; if so split */ 2260 if ((sgl->addr_lo & 0xfff) + protgroup_len > 0x1000) { 2261 protgroup_remainder = 0x1000 - (sgl->addr_lo & 0xfff); 2262 protgroup_offset += protgroup_remainder; 2263 protgrp_blks = protgroup_remainder / 8; 2264 protgrp_bytes = protgrp_blks * blksize; 2265 } else { 2266 protgroup_offset = 0; 2267 curr_prot++; 2268 } 2269 2270 num_sge++; 2271 2272 /* setup SGE's for data blocks associated with DIF data */ 2273 pgdone = 0; 2274 subtotal = 0; /* total bytes processed for current prot grp */ 2275 2276 sgl++; 2277 j++; 2278 2279 while (!pgdone) { 2280 /* Check to see if we ran out of space */ 2281 if ((num_sge >= phba->cfg_total_seg_cnt) && 2282 !phba->cfg_xpsgl) 2283 return num_sge + 1; 2284 2285 if (!sgde) { 2286 lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT, 2287 "9086 BLKGRD:%s Invalid data segment\n", 2288 __func__); 2289 return 0; 2290 } 2291 2292 if (!((j + 1) % phba->border_sge_num)) { 2293 sgl->word2 = 0; 2294 2295 /* set LSP type */ 2296 bf_set(lpfc_sli4_sge_type, sgl, 2297 LPFC_SGE_TYPE_LSP); 2298 2299 sgl_xtra = lpfc_get_sgl_per_hdwq(phba, 2300 lpfc_cmd); 2301 2302 if (unlikely(!sgl_xtra)) { 2303 goto out; 2304 } else { 2305 sgl->addr_lo = cpu_to_le32( 2306 putPaddrLow(sgl_xtra->dma_phys_sgl)); 2307 sgl->addr_hi = cpu_to_le32( 2308 putPaddrHigh(sgl_xtra->dma_phys_sgl)); 2309 } 2310 2311 sgl->word2 = cpu_to_le32(sgl->word2); 2312 sgl->sge_len = cpu_to_le32( 2313 phba->cfg_sg_dma_buf_size); 2314 2315 sgl = (struct sli4_sge *)sgl_xtra->dma_sgl; 2316 } else { 2317 dataphysaddr = sg_dma_address(sgde) + 2318 split_offset; 2319 2320 remainder = sg_dma_len(sgde) - split_offset; 2321 2322 if ((subtotal + remainder) <= protgrp_bytes) { 2323 /* we can use this whole buffer */ 2324 dma_len = remainder; 2325 split_offset = 0; 2326 2327 if ((subtotal + remainder) == 2328 protgrp_bytes) 2329 pgdone = 1; 2330 } else { 2331 /* must split this buffer with next 2332 * prot grp 2333 */ 2334 dma_len = protgrp_bytes - subtotal; 2335 split_offset += dma_len; 2336 } 2337 2338 subtotal += dma_len; 2339 2340 sgl->word2 = 0; 2341 sgl->addr_lo = cpu_to_le32(putPaddrLow( 2342 dataphysaddr)); 2343 sgl->addr_hi = cpu_to_le32(putPaddrHigh( 2344 dataphysaddr)); 2345 bf_set(lpfc_sli4_sge_last, sgl, 0); 2346 bf_set(lpfc_sli4_sge_offset, sgl, dma_offset); 2347 bf_set(lpfc_sli4_sge_type, sgl, 2348 LPFC_SGE_TYPE_DATA); 2349 2350 sgl->sge_len = cpu_to_le32(dma_len); 2351 dma_offset += dma_len; 2352 2353 num_sge++; 2354 2355 if (split_offset) { 2356 sgl++; 2357 j++; 2358 break; 2359 } 2360 2361 /* Move to the next s/g segment if possible */ 2362 sgde = sg_next(sgde); 2363 2364 sgl++; 2365 } 2366 2367 j++; 2368 } 2369 2370 if (protgroup_offset) { 2371 /* update the reference tag */ 2372 reftag += protgrp_blks; 2373 continue; 2374 } 2375 2376 /* are we done ? */ 2377 if (curr_prot == protcnt) { 2378 /* mark the last SGL */ 2379 sgl--; 2380 bf_set(lpfc_sli4_sge_last, sgl, 1); 2381 alldone = 1; 2382 } else if (curr_prot < protcnt) { 2383 /* advance to next prot buffer */ 2384 sgpe = sg_next(sgpe); 2385 2386 /* update the reference tag */ 2387 reftag += protgrp_blks; 2388 } else { 2389 /* if we're here, we have a bug */ 2390 lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT, 2391 "9085 BLKGRD: bug in %s\n", __func__); 2392 } 2393 2394 } while (!alldone); 2395 2396out: 2397 2398 return num_sge; 2399} 2400 2401/** 2402 * lpfc_prot_group_type - Get prtotection group type of SCSI command 2403 * @phba: The Hba for which this call is being executed. 2404 * @sc: pointer to scsi command we're working on 2405 * 2406 * Given a SCSI command that supports DIF, determine composition of protection 2407 * groups involved in setting up buffer lists 2408 * 2409 * Returns: Protection group type (with or without DIF) 2410 * 2411 **/ 2412static int 2413lpfc_prot_group_type(struct lpfc_hba *phba, struct scsi_cmnd *sc) 2414{ 2415 int ret = LPFC_PG_TYPE_INVALID; 2416 unsigned char op = scsi_get_prot_op(sc); 2417 2418 switch (op) { 2419 case SCSI_PROT_READ_STRIP: 2420 case SCSI_PROT_WRITE_INSERT: 2421 ret = LPFC_PG_TYPE_NO_DIF; 2422 break; 2423 case SCSI_PROT_READ_INSERT: 2424 case SCSI_PROT_WRITE_STRIP: 2425 case SCSI_PROT_READ_PASS: 2426 case SCSI_PROT_WRITE_PASS: 2427 ret = LPFC_PG_TYPE_DIF_BUF; 2428 break; 2429 default: 2430 if (phba) 2431 lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT, 2432 "9021 Unsupported protection op:%d\n", 2433 op); 2434 break; 2435 } 2436 return ret; 2437} 2438 2439/** 2440 * lpfc_bg_scsi_adjust_dl - Adjust SCSI data length for BlockGuard 2441 * @phba: The Hba for which this call is being executed. 2442 * @lpfc_cmd: The scsi buffer which is going to be adjusted. 2443 * 2444 * Adjust the data length to account for how much data 2445 * is actually on the wire. 2446 * 2447 * returns the adjusted data length 2448 **/ 2449static int 2450lpfc_bg_scsi_adjust_dl(struct lpfc_hba *phba, 2451 struct lpfc_io_buf *lpfc_cmd) 2452{ 2453 struct scsi_cmnd *sc = lpfc_cmd->pCmd; 2454 int fcpdl; 2455 2456 fcpdl = scsi_bufflen(sc); 2457 2458 /* Check if there is protection data on the wire */ 2459 if (sc->sc_data_direction == DMA_FROM_DEVICE) { 2460 /* Read check for protection data */ 2461 if (scsi_get_prot_op(sc) == SCSI_PROT_READ_INSERT) 2462 return fcpdl; 2463 2464 } else { 2465 /* Write check for protection data */ 2466 if (scsi_get_prot_op(sc) == SCSI_PROT_WRITE_STRIP) 2467 return fcpdl; 2468 } 2469 2470 /* 2471 * If we are in DIF Type 1 mode every data block has a 8 byte 2472 * DIF (trailer) attached to it. Must ajust FCP data length 2473 * to account for the protection data. 2474 */ 2475 fcpdl += (fcpdl / scsi_prot_interval(sc)) * 8; 2476 2477 return fcpdl; 2478} 2479 2480/** 2481 * lpfc_bg_scsi_prep_dma_buf_s3 - DMA mapping for scsi buffer to SLI3 IF spec 2482 * @phba: The Hba for which this call is being executed. 2483 * @lpfc_cmd: The scsi buffer which is going to be prep'ed. 2484 * 2485 * This is the protection/DIF aware version of 2486 * lpfc_scsi_prep_dma_buf(). It may be a good idea to combine the 2487 * two functions eventually, but for now, it's here. 2488 * RETURNS 0 - SUCCESS, 2489 * 1 - Failed DMA map, retry. 2490 * 2 - Invalid scsi cmd or prot-type. Do not rety. 2491 **/ 2492static int 2493lpfc_bg_scsi_prep_dma_buf_s3(struct lpfc_hba *phba, 2494 struct lpfc_io_buf *lpfc_cmd) 2495{ 2496 struct scsi_cmnd *scsi_cmnd = lpfc_cmd->pCmd; 2497 struct fcp_cmnd *fcp_cmnd = lpfc_cmd->fcp_cmnd; 2498 struct ulp_bde64 *bpl = (struct ulp_bde64 *)lpfc_cmd->dma_sgl; 2499 IOCB_t *iocb_cmd = &lpfc_cmd->cur_iocbq.iocb; 2500 uint32_t num_bde = 0; 2501 int datasegcnt, protsegcnt, datadir = scsi_cmnd->sc_data_direction; 2502 int prot_group_type = 0; 2503 int fcpdl; 2504 int ret = 1; 2505 struct lpfc_vport *vport = phba->pport; 2506 2507 /* 2508 * Start the lpfc command prep by bumping the bpl beyond fcp_cmnd 2509 * fcp_rsp regions to the first data bde entry 2510 */ 2511 bpl += 2; 2512 if (scsi_sg_count(scsi_cmnd)) { 2513 /* 2514 * The driver stores the segment count returned from dma_map_sg 2515 * because this a count of dma-mappings used to map the use_sg 2516 * pages. They are not guaranteed to be the same for those 2517 * architectures that implement an IOMMU. 2518 */ 2519 datasegcnt = dma_map_sg(&phba->pcidev->dev, 2520 scsi_sglist(scsi_cmnd), 2521 scsi_sg_count(scsi_cmnd), datadir); 2522 if (unlikely(!datasegcnt)) 2523 return 1; 2524 2525 lpfc_cmd->seg_cnt = datasegcnt; 2526 2527 /* First check if data segment count from SCSI Layer is good */ 2528 if (lpfc_cmd->seg_cnt > phba->cfg_sg_seg_cnt) { 2529 WARN_ON_ONCE(lpfc_cmd->seg_cnt > phba->cfg_sg_seg_cnt); 2530 ret = 2; 2531 goto err; 2532 } 2533 2534 prot_group_type = lpfc_prot_group_type(phba, scsi_cmnd); 2535 2536 switch (prot_group_type) { 2537 case LPFC_PG_TYPE_NO_DIF: 2538 2539 /* Here we need to add a PDE5 and PDE6 to the count */ 2540 if ((lpfc_cmd->seg_cnt + 2) > phba->cfg_total_seg_cnt) { 2541 ret = 2; 2542 goto err; 2543 } 2544 2545 num_bde = lpfc_bg_setup_bpl(phba, scsi_cmnd, bpl, 2546 datasegcnt); 2547 /* we should have 2 or more entries in buffer list */ 2548 if (num_bde < 2) { 2549 ret = 2; 2550 goto err; 2551 } 2552 break; 2553 2554 case LPFC_PG_TYPE_DIF_BUF: 2555 /* 2556 * This type indicates that protection buffers are 2557 * passed to the driver, so that needs to be prepared 2558 * for DMA 2559 */ 2560 protsegcnt = dma_map_sg(&phba->pcidev->dev, 2561 scsi_prot_sglist(scsi_cmnd), 2562 scsi_prot_sg_count(scsi_cmnd), datadir); 2563 if (unlikely(!protsegcnt)) { 2564 scsi_dma_unmap(scsi_cmnd); 2565 return 1; 2566 } 2567 2568 lpfc_cmd->prot_seg_cnt = protsegcnt; 2569 2570 /* 2571 * There is a minimun of 4 BPLs used for every 2572 * protection data segment. 2573 */ 2574 if ((lpfc_cmd->prot_seg_cnt * 4) > 2575 (phba->cfg_total_seg_cnt - 2)) { 2576 ret = 2; 2577 goto err; 2578 } 2579 2580 num_bde = lpfc_bg_setup_bpl_prot(phba, scsi_cmnd, bpl, 2581 datasegcnt, protsegcnt); 2582 /* we should have 3 or more entries in buffer list */ 2583 if ((num_bde < 3) || 2584 (num_bde > phba->cfg_total_seg_cnt)) { 2585 ret = 2; 2586 goto err; 2587 } 2588 break; 2589 2590 case LPFC_PG_TYPE_INVALID: 2591 default: 2592 scsi_dma_unmap(scsi_cmnd); 2593 lpfc_cmd->seg_cnt = 0; 2594 2595 lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT, 2596 "9022 Unexpected protection group %i\n", 2597 prot_group_type); 2598 return 2; 2599 } 2600 } 2601 2602 /* 2603 * Finish initializing those IOCB fields that are dependent on the 2604 * scsi_cmnd request_buffer. Note that the bdeSize is explicitly 2605 * reinitialized since all iocb memory resources are used many times 2606 * for transmit, receive, and continuation bpl's. 2607 */ 2608 iocb_cmd->un.fcpi64.bdl.bdeSize = (2 * sizeof(struct ulp_bde64)); 2609 iocb_cmd->un.fcpi64.bdl.bdeSize += (num_bde * sizeof(struct ulp_bde64)); 2610 iocb_cmd->ulpBdeCount = 1; 2611 iocb_cmd->ulpLe = 1; 2612 2613 fcpdl = lpfc_bg_scsi_adjust_dl(phba, lpfc_cmd); 2614 fcp_cmnd->fcpDl = be32_to_cpu(fcpdl); 2615 2616 /* 2617 * Due to difference in data length between DIF/non-DIF paths, 2618 * we need to set word 4 of IOCB here 2619 */ 2620 iocb_cmd->un.fcpi.fcpi_parm = fcpdl; 2621 2622 /* 2623 * For First burst, we may need to adjust the initial transfer 2624 * length for DIF 2625 */ 2626 if (iocb_cmd->un.fcpi.fcpi_XRdy && 2627 (fcpdl < vport->cfg_first_burst_size)) 2628 iocb_cmd->un.fcpi.fcpi_XRdy = fcpdl; 2629 2630 return 0; 2631err: 2632 if (lpfc_cmd->seg_cnt) 2633 scsi_dma_unmap(scsi_cmnd); 2634 if (lpfc_cmd->prot_seg_cnt) 2635 dma_unmap_sg(&phba->pcidev->dev, scsi_prot_sglist(scsi_cmnd), 2636 scsi_prot_sg_count(scsi_cmnd), 2637 scsi_cmnd->sc_data_direction); 2638 2639 lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT, 2640 "9023 Cannot setup S/G List for HBA" 2641 "IO segs %d/%d BPL %d SCSI %d: %d %d\n", 2642 lpfc_cmd->seg_cnt, lpfc_cmd->prot_seg_cnt, 2643 phba->cfg_total_seg_cnt, phba->cfg_sg_seg_cnt, 2644 prot_group_type, num_bde); 2645 2646 lpfc_cmd->seg_cnt = 0; 2647 lpfc_cmd->prot_seg_cnt = 0; 2648 return ret; 2649} 2650 2651/* 2652 * This function calcuates the T10 DIF guard tag 2653 * on the specified data using a CRC algorithmn 2654 * using crc_t10dif. 2655 */ 2656static uint16_t 2657lpfc_bg_crc(uint8_t *data, int count) 2658{ 2659 uint16_t crc = 0; 2660 uint16_t x; 2661 2662 crc = crc_t10dif(data, count); 2663 x = cpu_to_be16(crc); 2664 return x; 2665} 2666 2667/* 2668 * This function calcuates the T10 DIF guard tag 2669 * on the specified data using a CSUM algorithmn 2670 * using ip_compute_csum. 2671 */ 2672static uint16_t 2673lpfc_bg_csum(uint8_t *data, int count) 2674{ 2675 uint16_t ret; 2676 2677 ret = ip_compute_csum(data, count); 2678 return ret; 2679} 2680 2681/* 2682 * This function examines the protection data to try to determine 2683 * what type of T10-DIF error occurred. 2684 */ 2685static void 2686lpfc_calc_bg_err(struct lpfc_hba *phba, struct lpfc_io_buf *lpfc_cmd) 2687{ 2688 struct scatterlist *sgpe; /* s/g prot entry */ 2689 struct scatterlist *sgde; /* s/g data entry */ 2690 struct scsi_cmnd *cmd = lpfc_cmd->pCmd; 2691 struct scsi_dif_tuple *src = NULL; 2692 uint8_t *data_src = NULL; 2693 uint16_t guard_tag; 2694 uint16_t start_app_tag, app_tag; 2695 uint32_t start_ref_tag, ref_tag; 2696 int prot, protsegcnt; 2697 int err_type, len, data_len; 2698 int chk_ref, chk_app, chk_guard; 2699 uint16_t sum; 2700 unsigned blksize; 2701 2702 err_type = BGS_GUARD_ERR_MASK; 2703 sum = 0; 2704 guard_tag = 0; 2705 2706 /* First check to see if there is protection data to examine */ 2707 prot = scsi_get_prot_op(cmd); 2708 if ((prot == SCSI_PROT_READ_STRIP) || 2709 (prot == SCSI_PROT_WRITE_INSERT) || 2710 (prot == SCSI_PROT_NORMAL)) 2711 goto out; 2712 2713 /* Currently the driver just supports ref_tag and guard_tag checking */ 2714 chk_ref = 1; 2715 chk_app = 0; 2716 chk_guard = 0; 2717 2718 /* Setup a ptr to the protection data provided by the SCSI host */ 2719 sgpe = scsi_prot_sglist(cmd); 2720 protsegcnt = lpfc_cmd->prot_seg_cnt; 2721 2722 if (sgpe && protsegcnt) { 2723 2724 /* 2725 * We will only try to verify guard tag if the segment 2726 * data length is a multiple of the blksize. 2727 */ 2728 sgde = scsi_sglist(cmd); 2729 blksize = scsi_prot_interval(cmd); 2730 data_src = (uint8_t *)sg_virt(sgde); 2731 data_len = sgde->length; 2732 if ((data_len & (blksize - 1)) == 0) 2733 chk_guard = 1; 2734 2735 src = (struct scsi_dif_tuple *)sg_virt(sgpe); 2736 start_ref_tag = scsi_prot_ref_tag(cmd); 2737 start_app_tag = src->app_tag; 2738 len = sgpe->length; 2739 while (src && protsegcnt) { 2740 while (len) { 2741 2742 /* 2743 * First check to see if a protection data 2744 * check is valid 2745 */ 2746 if ((src->ref_tag == T10_PI_REF_ESCAPE) || 2747 (src->app_tag == T10_PI_APP_ESCAPE)) { 2748 start_ref_tag++; 2749 goto skipit; 2750 } 2751 2752 /* First Guard Tag checking */ 2753 if (chk_guard) { 2754 guard_tag = src->guard_tag; 2755 if (cmd->prot_flags 2756 & SCSI_PROT_IP_CHECKSUM) 2757 sum = lpfc_bg_csum(data_src, 2758 blksize); 2759 else 2760 sum = lpfc_bg_crc(data_src, 2761 blksize); 2762 if ((guard_tag != sum)) { 2763 err_type = BGS_GUARD_ERR_MASK; 2764 goto out; 2765 } 2766 } 2767 2768 /* Reference Tag checking */ 2769 ref_tag = be32_to_cpu(src->ref_tag); 2770 if (chk_ref && (ref_tag != start_ref_tag)) { 2771 err_type = BGS_REFTAG_ERR_MASK; 2772 goto out; 2773 } 2774 start_ref_tag++; 2775 2776 /* App Tag checking */ 2777 app_tag = src->app_tag; 2778 if (chk_app && (app_tag != start_app_tag)) { 2779 err_type = BGS_APPTAG_ERR_MASK; 2780 goto out; 2781 } 2782skipit: 2783 len -= sizeof(struct scsi_dif_tuple); 2784 if (len < 0) 2785 len = 0; 2786 src++; 2787 2788 data_src += blksize; 2789 data_len -= blksize; 2790 2791 /* 2792 * Are we at the end of the Data segment? 2793 * The data segment is only used for Guard 2794 * tag checking. 2795 */ 2796 if (chk_guard && (data_len == 0)) { 2797 chk_guard = 0; 2798 sgde = sg_next(sgde); 2799 if (!sgde) 2800 goto out; 2801 2802 data_src = (uint8_t *)sg_virt(sgde); 2803 data_len = sgde->length; 2804 if ((data_len & (blksize - 1)) == 0) 2805 chk_guard = 1; 2806 } 2807 } 2808 2809 /* Goto the next Protection data segment */ 2810 sgpe = sg_next(sgpe); 2811 if (sgpe) { 2812 src = (struct scsi_dif_tuple *)sg_virt(sgpe); 2813 len = sgpe->length; 2814 } else { 2815 src = NULL; 2816 } 2817 protsegcnt--; 2818 } 2819 } 2820out: 2821 if (err_type == BGS_GUARD_ERR_MASK) { 2822 scsi_build_sense(cmd, 1, ILLEGAL_REQUEST, 0x10, 0x1); 2823 set_host_byte(cmd, DID_ABORT); 2824 phba->bg_guard_err_cnt++; 2825 lpfc_printf_log(phba, KERN_WARNING, LOG_FCP | LOG_BG, 2826 "9069 BLKGRD: reftag %x grd_tag err %x != %x\n", 2827 scsi_prot_ref_tag(cmd), 2828 sum, guard_tag); 2829 2830 } else if (err_type == BGS_REFTAG_ERR_MASK) { 2831 scsi_build_sense(cmd, 1, ILLEGAL_REQUEST, 0x10, 0x3); 2832 set_host_byte(cmd, DID_ABORT); 2833 2834 phba->bg_reftag_err_cnt++; 2835 lpfc_printf_log(phba, KERN_WARNING, LOG_FCP | LOG_BG, 2836 "9066 BLKGRD: reftag %x ref_tag err %x != %x\n", 2837 scsi_prot_ref_tag(cmd), 2838 ref_tag, start_ref_tag); 2839 2840 } else if (err_type == BGS_APPTAG_ERR_MASK) { 2841 scsi_build_sense(cmd, 1, ILLEGAL_REQUEST, 0x10, 0x2); 2842 set_host_byte(cmd, DID_ABORT); 2843 2844 phba->bg_apptag_err_cnt++; 2845 lpfc_printf_log(phba, KERN_WARNING, LOG_FCP | LOG_BG, 2846 "9041 BLKGRD: reftag %x app_tag err %x != %x\n", 2847 scsi_prot_ref_tag(cmd), 2848 app_tag, start_app_tag); 2849 } 2850} 2851 2852/* 2853 * This function checks for BlockGuard errors detected by 2854 * the HBA. In case of errors, the ASC/ASCQ fields in the 2855 * sense buffer will be set accordingly, paired with 2856 * ILLEGAL_REQUEST to signal to the kernel that the HBA 2857 * detected corruption. 2858 * 2859 * Returns: 2860 * 0 - No error found 2861 * 1 - BlockGuard error found 2862 * -1 - Internal error (bad profile, ...etc) 2863 */ 2864static int 2865lpfc_parse_bg_err(struct lpfc_hba *phba, struct lpfc_io_buf *lpfc_cmd, 2866 struct lpfc_iocbq *pIocbOut) 2867{ 2868 struct scsi_cmnd *cmd = lpfc_cmd->pCmd; 2869 struct sli3_bg_fields *bgf; 2870 int ret = 0; 2871 struct lpfc_wcqe_complete *wcqe; 2872 u32 status; 2873 u32 bghm = 0; 2874 u32 bgstat = 0; 2875 u64 failing_sector = 0; 2876 2877 if (phba->sli_rev == LPFC_SLI_REV4) { 2878 wcqe = &pIocbOut->wcqe_cmpl; 2879 status = bf_get(lpfc_wcqe_c_status, wcqe); 2880 2881 if (status == CQE_STATUS_DI_ERROR) { 2882 /* Guard Check failed */ 2883 if (bf_get(lpfc_wcqe_c_bg_ge, wcqe)) 2884 bgstat |= BGS_GUARD_ERR_MASK; 2885 2886 /* AppTag Check failed */ 2887 if (bf_get(lpfc_wcqe_c_bg_ae, wcqe)) 2888 bgstat |= BGS_APPTAG_ERR_MASK; 2889 2890 /* RefTag Check failed */ 2891 if (bf_get(lpfc_wcqe_c_bg_re, wcqe)) 2892 bgstat |= BGS_REFTAG_ERR_MASK; 2893 2894 /* Check to see if there was any good data before the 2895 * error 2896 */ 2897 if (bf_get(lpfc_wcqe_c_bg_tdpv, wcqe)) { 2898 bgstat |= BGS_HI_WATER_MARK_PRESENT_MASK; 2899 bghm = wcqe->total_data_placed; 2900 } 2901 2902 /* 2903 * Set ALL the error bits to indicate we don't know what 2904 * type of error it is. 2905 */ 2906 if (!bgstat) 2907 bgstat |= (BGS_REFTAG_ERR_MASK | 2908 BGS_APPTAG_ERR_MASK | 2909 BGS_GUARD_ERR_MASK); 2910 } 2911 2912 } else { 2913 bgf = &pIocbOut->iocb.unsli3.sli3_bg; 2914 bghm = bgf->bghm; 2915 bgstat = bgf->bgstat; 2916 } 2917 2918 if (lpfc_bgs_get_invalid_prof(bgstat)) { 2919 cmd->result = DID_ERROR << 16; 2920 lpfc_printf_log(phba, KERN_WARNING, LOG_FCP | LOG_BG, 2921 "9072 BLKGRD: Invalid BG Profile in cmd " 2922 "0x%x reftag 0x%x blk cnt 0x%x " 2923 "bgstat=x%x bghm=x%x\n", cmd->cmnd[0], 2924 scsi_prot_ref_tag(cmd), 2925 scsi_logical_block_count(cmd), bgstat, bghm); 2926 ret = (-1); 2927 goto out; 2928 } 2929 2930 if (lpfc_bgs_get_uninit_dif_block(bgstat)) { 2931 cmd->result = DID_ERROR << 16; 2932 lpfc_printf_log(phba, KERN_WARNING, LOG_FCP | LOG_BG, 2933 "9073 BLKGRD: Invalid BG PDIF Block in cmd " 2934 "0x%x reftag 0x%x blk cnt 0x%x " 2935 "bgstat=x%x bghm=x%x\n", cmd->cmnd[0], 2936 scsi_prot_ref_tag(cmd), 2937 scsi_logical_block_count(cmd), bgstat, bghm); 2938 ret = (-1); 2939 goto out; 2940 } 2941 2942 if (lpfc_bgs_get_guard_err(bgstat)) { 2943 ret = 1; 2944 scsi_build_sense(cmd, 1, ILLEGAL_REQUEST, 0x10, 0x1); 2945 set_host_byte(cmd, DID_ABORT); 2946 phba->bg_guard_err_cnt++; 2947 lpfc_printf_log(phba, KERN_WARNING, LOG_FCP | LOG_BG, 2948 "9055 BLKGRD: Guard Tag error in cmd " 2949 "0x%x reftag 0x%x blk cnt 0x%x " 2950 "bgstat=x%x bghm=x%x\n", cmd->cmnd[0], 2951 scsi_prot_ref_tag(cmd), 2952 scsi_logical_block_count(cmd), bgstat, bghm); 2953 } 2954 2955 if (lpfc_bgs_get_reftag_err(bgstat)) { 2956 ret = 1; 2957 scsi_build_sense(cmd, 1, ILLEGAL_REQUEST, 0x10, 0x3); 2958 set_host_byte(cmd, DID_ABORT); 2959 phba->bg_reftag_err_cnt++; 2960 lpfc_printf_log(phba, KERN_WARNING, LOG_FCP | LOG_BG, 2961 "9056 BLKGRD: Ref Tag error in cmd " 2962 "0x%x reftag 0x%x blk cnt 0x%x " 2963 "bgstat=x%x bghm=x%x\n", cmd->cmnd[0], 2964 scsi_prot_ref_tag(cmd), 2965 scsi_logical_block_count(cmd), bgstat, bghm); 2966 } 2967 2968 if (lpfc_bgs_get_apptag_err(bgstat)) { 2969 ret = 1; 2970 scsi_build_sense(cmd, 1, ILLEGAL_REQUEST, 0x10, 0x2); 2971 set_host_byte(cmd, DID_ABORT); 2972 phba->bg_apptag_err_cnt++; 2973 lpfc_printf_log(phba, KERN_WARNING, LOG_FCP | LOG_BG, 2974 "9061 BLKGRD: App Tag error in cmd " 2975 "0x%x reftag 0x%x blk cnt 0x%x " 2976 "bgstat=x%x bghm=x%x\n", cmd->cmnd[0], 2977 scsi_prot_ref_tag(cmd), 2978 scsi_logical_block_count(cmd), bgstat, bghm); 2979 } 2980 2981 if (lpfc_bgs_get_hi_water_mark_present(bgstat)) { 2982 /* 2983 * setup sense data descriptor 0 per SPC-4 as an information 2984 * field, and put the failing LBA in it. 2985 * This code assumes there was also a guard/app/ref tag error 2986 * indication. 2987 */ 2988 cmd->sense_buffer[7] = 0xc; /* Additional sense length */ 2989 cmd->sense_buffer[8] = 0; /* Information descriptor type */ 2990 cmd->sense_buffer[9] = 0xa; /* Additional descriptor length */ 2991 cmd->sense_buffer[10] = 0x80; /* Validity bit */ 2992 2993 /* bghm is a "on the wire" FC frame based count */ 2994 switch (scsi_get_prot_op(cmd)) { 2995 case SCSI_PROT_READ_INSERT: 2996 case SCSI_PROT_WRITE_STRIP: 2997 bghm /= cmd->device->sector_size; 2998 break; 2999 case SCSI_PROT_READ_STRIP: 3000 case SCSI_PROT_WRITE_INSERT: 3001 case SCSI_PROT_READ_PASS: 3002 case SCSI_PROT_WRITE_PASS: 3003 bghm /= (cmd->device->sector_size + 3004 sizeof(struct scsi_dif_tuple)); 3005 break; 3006 } 3007 3008 failing_sector = scsi_get_lba(cmd); 3009 failing_sector += bghm; 3010 3011 /* Descriptor Information */ 3012 put_unaligned_be64(failing_sector, &cmd->sense_buffer[12]); 3013 } 3014 3015 if (!ret) { 3016 /* No error was reported - problem in FW? */ 3017 lpfc_printf_log(phba, KERN_WARNING, LOG_FCP | LOG_BG, 3018 "9057 BLKGRD: Unknown error in cmd " 3019 "0x%x reftag 0x%x blk cnt 0x%x " 3020 "bgstat=x%x bghm=x%x\n", cmd->cmnd[0], 3021 scsi_prot_ref_tag(cmd), 3022 scsi_logical_block_count(cmd), bgstat, bghm); 3023 3024 /* Calculate what type of error it was */ 3025 lpfc_calc_bg_err(phba, lpfc_cmd); 3026 } 3027out: 3028 return ret; 3029} 3030 3031/** 3032 * lpfc_scsi_prep_dma_buf_s4 - DMA mapping for scsi buffer to SLI4 IF spec 3033 * @phba: The Hba for which this call is being executed. 3034 * @lpfc_cmd: The scsi buffer which is going to be mapped. 3035 * 3036 * This routine does the pci dma mapping for scatter-gather list of scsi cmnd 3037 * field of @lpfc_cmd for device with SLI-4 interface spec. 3038 * 3039 * Return codes: 3040 * 2 - Error - Do not retry 3041 * 1 - Error - Retry 3042 * 0 - Success 3043 **/ 3044static int 3045lpfc_scsi_prep_dma_buf_s4(struct lpfc_hba *phba, struct lpfc_io_buf *lpfc_cmd) 3046{ 3047 struct scsi_cmnd *scsi_cmnd = lpfc_cmd->pCmd; 3048 struct scatterlist *sgel = NULL; 3049 struct fcp_cmnd *fcp_cmnd = lpfc_cmd->fcp_cmnd; 3050 struct sli4_sge *sgl = (struct sli4_sge *)lpfc_cmd->dma_sgl; 3051 struct sli4_sge *first_data_sgl; 3052 struct lpfc_iocbq *pwqeq = &lpfc_cmd->cur_iocbq; 3053 struct lpfc_vport *vport = phba->pport; 3054 union lpfc_wqe128 *wqe = &pwqeq->wqe; 3055 dma_addr_t physaddr; 3056 uint32_t dma_len; 3057 uint32_t dma_offset = 0; 3058 int nseg, i, j; 3059 struct ulp_bde64 *bde; 3060 bool lsp_just_set = false; 3061 struct sli4_hybrid_sgl *sgl_xtra = NULL; 3062 3063 /* 3064 * There are three possibilities here - use scatter-gather segment, use 3065 * the single mapping, or neither. Start the lpfc command prep by 3066 * bumping the bpl beyond the fcp_cmnd and fcp_rsp regions to the first 3067 * data bde entry. 3068 */ 3069 if (scsi_sg_count(scsi_cmnd)) { 3070 /* 3071 * The driver stores the segment count returned from dma_map_sg 3072 * because this a count of dma-mappings used to map the use_sg 3073 * pages. They are not guaranteed to be the same for those 3074 * architectures that implement an IOMMU. 3075 */ 3076 3077 nseg = scsi_dma_map(scsi_cmnd); 3078 if (unlikely(nseg <= 0)) 3079 return 1; 3080 sgl += 1; 3081 /* clear the last flag in the fcp_rsp map entry */ 3082 sgl->word2 = le32_to_cpu(sgl->word2); 3083 bf_set(lpfc_sli4_sge_last, sgl, 0); 3084 sgl->word2 = cpu_to_le32(sgl->word2); 3085 sgl += 1; 3086 first_data_sgl = sgl; 3087 lpfc_cmd->seg_cnt = nseg; 3088 if (!phba->cfg_xpsgl && 3089 lpfc_cmd->seg_cnt > phba->cfg_sg_seg_cnt) { 3090 lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT, 3091 "9074 BLKGRD:" 3092 " %s: Too many sg segments from " 3093 "dma_map_sg. Config %d, seg_cnt %d\n", 3094 __func__, phba->cfg_sg_seg_cnt, 3095 lpfc_cmd->seg_cnt); 3096 WARN_ON_ONCE(lpfc_cmd->seg_cnt > phba->cfg_sg_seg_cnt); 3097 lpfc_cmd->seg_cnt = 0; 3098 scsi_dma_unmap(scsi_cmnd); 3099 return 2; 3100 } 3101 3102 /* 3103 * The driver established a maximum scatter-gather segment count 3104 * during probe that limits the number of sg elements in any 3105 * single scsi command. Just run through the seg_cnt and format 3106 * the sge's. 3107 * When using SLI-3 the driver will try to fit all the BDEs into 3108 * the IOCB. If it can't then the BDEs get added to a BPL as it 3109 * does for SLI-2 mode. 3110 */ 3111 3112 /* for tracking segment boundaries */ 3113 sgel = scsi_sglist(scsi_cmnd); 3114 j = 2; 3115 for (i = 0; i < nseg; i++) { 3116 sgl->word2 = 0; 3117 if (nseg == 1) { 3118 bf_set(lpfc_sli4_sge_last, sgl, 1); 3119 bf_set(lpfc_sli4_sge_type, sgl, 3120 LPFC_SGE_TYPE_DATA); 3121 } else { 3122 bf_set(lpfc_sli4_sge_last, sgl, 0); 3123 3124 /* do we need to expand the segment */ 3125 if (!lsp_just_set && 3126 !((j + 1) % phba->border_sge_num) && 3127 ((nseg - 1) != i)) { 3128 /* set LSP type */ 3129 bf_set(lpfc_sli4_sge_type, sgl, 3130 LPFC_SGE_TYPE_LSP); 3131 3132 sgl_xtra = lpfc_get_sgl_per_hdwq( 3133 phba, lpfc_cmd); 3134 3135 if (unlikely(!sgl_xtra)) { 3136 lpfc_cmd->seg_cnt = 0; 3137 scsi_dma_unmap(scsi_cmnd); 3138 return 1; 3139 } 3140 sgl->addr_lo = cpu_to_le32(putPaddrLow( 3141 sgl_xtra->dma_phys_sgl)); 3142 sgl->addr_hi = cpu_to_le32(putPaddrHigh( 3143 sgl_xtra->dma_phys_sgl)); 3144 3145 } else { 3146 bf_set(lpfc_sli4_sge_type, sgl, 3147 LPFC_SGE_TYPE_DATA); 3148 } 3149 } 3150 3151 if (!(bf_get(lpfc_sli4_sge_type, sgl) & 3152 LPFC_SGE_TYPE_LSP)) { 3153 if ((nseg - 1) == i) 3154 bf_set(lpfc_sli4_sge_last, sgl, 1); 3155 3156 physaddr = sg_dma_address(sgel); 3157 dma_len = sg_dma_len(sgel); 3158 sgl->addr_lo = cpu_to_le32(putPaddrLow( 3159 physaddr)); 3160 sgl->addr_hi = cpu_to_le32(putPaddrHigh( 3161 physaddr)); 3162 3163 bf_set(lpfc_sli4_sge_offset, sgl, dma_offset); 3164 sgl->word2 = cpu_to_le32(sgl->word2); 3165 sgl->sge_len = cpu_to_le32(dma_len); 3166 3167 dma_offset += dma_len; 3168 sgel = sg_next(sgel); 3169 3170 sgl++; 3171 lsp_just_set = false; 3172 3173 } else { 3174 sgl->word2 = cpu_to_le32(sgl->word2); 3175 sgl->sge_len = cpu_to_le32( 3176 phba->cfg_sg_dma_buf_size); 3177 3178 sgl = (struct sli4_sge *)sgl_xtra->dma_sgl; 3179 i = i - 1; 3180 3181 lsp_just_set = true; 3182 } 3183 3184 j++; 3185 } 3186 3187 /* PBDE support for first data SGE only. 3188 * For FCoE, we key off Performance Hints. 3189 * For FC, we key off lpfc_enable_pbde. 3190 */ 3191 if (nseg == 1 && 3192 ((phba->sli3_options & LPFC_SLI4_PERFH_ENABLED) || 3193 phba->cfg_enable_pbde)) { 3194 /* Words 13-15 */ 3195 bde = (struct ulp_bde64 *) 3196 &wqe->words[13]; 3197 bde->addrLow = first_data_sgl->addr_lo; 3198 bde->addrHigh = first_data_sgl->addr_hi; 3199 bde->tus.f.bdeSize = 3200 le32_to_cpu(first_data_sgl->sge_len); 3201 bde->tus.f.bdeFlags = BUFF_TYPE_BDE_64; 3202 bde->tus.w = cpu_to_le32(bde->tus.w); 3203 3204 /* Word 11 - set PBDE bit */ 3205 bf_set(wqe_pbde, &wqe->generic.wqe_com, 1); 3206 } else { 3207 memset(&wqe->words[13], 0, (sizeof(uint32_t) * 3)); 3208 /* Word 11 - PBDE bit disabled by default template */ 3209 } 3210 } else { 3211 sgl += 1; 3212 /* set the last flag in the fcp_rsp map entry */ 3213 sgl->word2 = le32_to_cpu(sgl->word2); 3214 bf_set(lpfc_sli4_sge_last, sgl, 1); 3215 sgl->word2 = cpu_to_le32(sgl->word2); 3216 3217 if ((phba->sli3_options & LPFC_SLI4_PERFH_ENABLED) || 3218 phba->cfg_enable_pbde) { 3219 bde = (struct ulp_bde64 *) 3220 &wqe->words[13]; 3221 memset(bde, 0, (sizeof(uint32_t) * 3)); 3222 } 3223 } 3224 3225 /* 3226 * Finish initializing those IOCB fields that are dependent on the 3227 * scsi_cmnd request_buffer. Note that for SLI-2 the bdeSize is 3228 * explicitly reinitialized. 3229 * all iocb memory resources are reused. 3230 */ 3231 fcp_cmnd->fcpDl = cpu_to_be32(scsi_bufflen(scsi_cmnd)); 3232 /* Set first-burst provided it was successfully negotiated */ 3233 if (!(phba->hba_flag & HBA_FCOE_MODE) && 3234 vport->cfg_first_burst_size && 3235 scsi_cmnd->sc_data_direction == DMA_TO_DEVICE) { 3236 u32 init_len, total_len; 3237 3238 total_len = be32_to_cpu(fcp_cmnd->fcpDl); 3239 init_len = min(total_len, vport->cfg_first_burst_size); 3240 3241 /* Word 4 & 5 */ 3242 wqe->fcp_iwrite.initial_xfer_len = init_len; 3243 wqe->fcp_iwrite.total_xfer_len = total_len; 3244 } else { 3245 /* Word 4 */ 3246 wqe->fcp_iwrite.total_xfer_len = 3247 be32_to_cpu(fcp_cmnd->fcpDl); 3248 } 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.cmd_flag |= (LPFC_IO_OAS | LPFC_IO_FOF); 3257 lpfc_cmd->cur_iocbq.priority = ((struct lpfc_device_data *) 3258 scsi_cmnd->device->hostdata)->priority; 3259 3260 /* Word 10 */ 3261 bf_set(wqe_oas, &wqe->generic.wqe_com, 1); 3262 bf_set(wqe_ccpe, &wqe->generic.wqe_com, 1); 3263 3264 if (lpfc_cmd->cur_iocbq.priority) 3265 bf_set(wqe_ccp, &wqe->generic.wqe_com, 3266 (lpfc_cmd->cur_iocbq.priority << 1)); 3267 else 3268 bf_set(wqe_ccp, &wqe->generic.wqe_com, 3269 (phba->cfg_XLanePriority << 1)); 3270 } 3271 3272 return 0; 3273} 3274 3275/** 3276 * lpfc_bg_scsi_prep_dma_buf_s4 - DMA mapping for scsi buffer to SLI4 IF spec 3277 * @phba: The Hba for which this call is being executed. 3278 * @lpfc_cmd: The scsi buffer which is going to be mapped. 3279 * 3280 * This is the protection/DIF aware version of 3281 * lpfc_scsi_prep_dma_buf(). It may be a good idea to combine the 3282 * two functions eventually, but for now, it's here 3283 * Return codes: 3284 * 2 - Error - Do not retry 3285 * 1 - Error - Retry 3286 * 0 - Success 3287 **/ 3288static int 3289lpfc_bg_scsi_prep_dma_buf_s4(struct lpfc_hba *phba, 3290 struct lpfc_io_buf *lpfc_cmd) 3291{ 3292 struct scsi_cmnd *scsi_cmnd = lpfc_cmd->pCmd; 3293 struct fcp_cmnd *fcp_cmnd = lpfc_cmd->fcp_cmnd; 3294 struct sli4_sge *sgl = (struct sli4_sge *)(lpfc_cmd->dma_sgl); 3295 struct lpfc_iocbq *pwqeq = &lpfc_cmd->cur_iocbq; 3296 union lpfc_wqe128 *wqe = &pwqeq->wqe; 3297 uint32_t num_sge = 0; 3298 int datasegcnt, protsegcnt, datadir = scsi_cmnd->sc_data_direction; 3299 int prot_group_type = 0; 3300 int fcpdl; 3301 int ret = 1; 3302 struct lpfc_vport *vport = phba->pport; 3303 3304 /* 3305 * Start the lpfc command prep by bumping the sgl beyond fcp_cmnd 3306 * fcp_rsp regions to the first data sge entry 3307 */ 3308 if (scsi_sg_count(scsi_cmnd)) { 3309 /* 3310 * The driver stores the segment count returned from dma_map_sg 3311 * because this a count of dma-mappings used to map the use_sg 3312 * pages. They are not guaranteed to be the same for those 3313 * architectures that implement an IOMMU. 3314 */ 3315 datasegcnt = dma_map_sg(&phba->pcidev->dev, 3316 scsi_sglist(scsi_cmnd), 3317 scsi_sg_count(scsi_cmnd), datadir); 3318 if (unlikely(!datasegcnt)) 3319 return 1; 3320 3321 sgl += 1; 3322 /* clear the last flag in the fcp_rsp map entry */ 3323 sgl->word2 = le32_to_cpu(sgl->word2); 3324 bf_set(lpfc_sli4_sge_last, sgl, 0); 3325 sgl->word2 = cpu_to_le32(sgl->word2); 3326 3327 sgl += 1; 3328 lpfc_cmd->seg_cnt = datasegcnt; 3329 3330 /* First check if data segment count from SCSI Layer is good */ 3331 if (lpfc_cmd->seg_cnt > phba->cfg_sg_seg_cnt && 3332 !phba->cfg_xpsgl) { 3333 WARN_ON_ONCE(lpfc_cmd->seg_cnt > phba->cfg_sg_seg_cnt); 3334 ret = 2; 3335 goto err; 3336 } 3337 3338 prot_group_type = lpfc_prot_group_type(phba, scsi_cmnd); 3339 3340 switch (prot_group_type) { 3341 case LPFC_PG_TYPE_NO_DIF: 3342 /* Here we need to add a DISEED to the count */ 3343 if (((lpfc_cmd->seg_cnt + 1) > 3344 phba->cfg_total_seg_cnt) && 3345 !phba->cfg_xpsgl) { 3346 ret = 2; 3347 goto err; 3348 } 3349 3350 num_sge = lpfc_bg_setup_sgl(phba, scsi_cmnd, sgl, 3351 datasegcnt, lpfc_cmd); 3352 3353 /* we should have 2 or more entries in buffer list */ 3354 if (num_sge < 2) { 3355 ret = 2; 3356 goto err; 3357 } 3358 break; 3359 3360 case LPFC_PG_TYPE_DIF_BUF: 3361 /* 3362 * This type indicates that protection buffers are 3363 * passed to the driver, so that needs to be prepared 3364 * for DMA 3365 */ 3366 protsegcnt = dma_map_sg(&phba->pcidev->dev, 3367 scsi_prot_sglist(scsi_cmnd), 3368 scsi_prot_sg_count(scsi_cmnd), datadir); 3369 if (unlikely(!protsegcnt)) { 3370 scsi_dma_unmap(scsi_cmnd); 3371 return 1; 3372 } 3373 3374 lpfc_cmd->prot_seg_cnt = protsegcnt; 3375 /* 3376 * There is a minimun of 3 SGEs used for every 3377 * protection data segment. 3378 */ 3379 if (((lpfc_cmd->prot_seg_cnt * 3) > 3380 (phba->cfg_total_seg_cnt - 2)) && 3381 !phba->cfg_xpsgl) { 3382 ret = 2; 3383 goto err; 3384 } 3385 3386 num_sge = lpfc_bg_setup_sgl_prot(phba, scsi_cmnd, sgl, 3387 datasegcnt, protsegcnt, lpfc_cmd); 3388 3389 /* we should have 3 or more entries in buffer list */ 3390 if (num_sge < 3 || 3391 (num_sge > phba->cfg_total_seg_cnt && 3392 !phba->cfg_xpsgl)) { 3393 ret = 2; 3394 goto err; 3395 } 3396 break; 3397 3398 case LPFC_PG_TYPE_INVALID: 3399 default: 3400 scsi_dma_unmap(scsi_cmnd); 3401 lpfc_cmd->seg_cnt = 0; 3402 3403 lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT, 3404 "9083 Unexpected protection group %i\n", 3405 prot_group_type); 3406 return 2; 3407 } 3408 } 3409 3410 switch (scsi_get_prot_op(scsi_cmnd)) { 3411 case SCSI_PROT_WRITE_STRIP: 3412 case SCSI_PROT_READ_STRIP: 3413 lpfc_cmd->cur_iocbq.cmd_flag |= LPFC_IO_DIF_STRIP; 3414 break; 3415 case SCSI_PROT_WRITE_INSERT: 3416 case SCSI_PROT_READ_INSERT: 3417 lpfc_cmd->cur_iocbq.cmd_flag |= LPFC_IO_DIF_INSERT; 3418 break; 3419 case SCSI_PROT_WRITE_PASS: 3420 case SCSI_PROT_READ_PASS: 3421 lpfc_cmd->cur_iocbq.cmd_flag |= LPFC_IO_DIF_PASS; 3422 break; 3423 } 3424 3425 fcpdl = lpfc_bg_scsi_adjust_dl(phba, lpfc_cmd); 3426 fcp_cmnd->fcpDl = be32_to_cpu(fcpdl); 3427 3428 /* Set first-burst provided it was successfully negotiated */ 3429 if (!(phba->hba_flag & HBA_FCOE_MODE) && 3430 vport->cfg_first_burst_size && 3431 scsi_cmnd->sc_data_direction == DMA_TO_DEVICE) { 3432 u32 init_len, total_len; 3433 3434 total_len = be32_to_cpu(fcp_cmnd->fcpDl); 3435 init_len = min(total_len, vport->cfg_first_burst_size); 3436 3437 /* Word 4 & 5 */ 3438 wqe->fcp_iwrite.initial_xfer_len = init_len; 3439 wqe->fcp_iwrite.total_xfer_len = total_len; 3440 } else { 3441 /* Word 4 */ 3442 wqe->fcp_iwrite.total_xfer_len = 3443 be32_to_cpu(fcp_cmnd->fcpDl); 3444 } 3445 3446 /* 3447 * If the OAS driver feature is enabled and the lun is enabled for 3448 * OAS, set the oas iocb related flags. 3449 */ 3450 if ((phba->cfg_fof) && ((struct lpfc_device_data *) 3451 scsi_cmnd->device->hostdata)->oas_enabled) { 3452 lpfc_cmd->cur_iocbq.cmd_flag |= (LPFC_IO_OAS | LPFC_IO_FOF); 3453 3454 /* Word 10 */ 3455 bf_set(wqe_oas, &wqe->generic.wqe_com, 1); 3456 bf_set(wqe_ccpe, &wqe->generic.wqe_com, 1); 3457 bf_set(wqe_ccp, &wqe->generic.wqe_com, 3458 (phba->cfg_XLanePriority << 1)); 3459 } 3460 3461 /* Word 7. DIF Flags */ 3462 if (lpfc_cmd->cur_iocbq.cmd_flag & LPFC_IO_DIF_PASS) 3463 bf_set(wqe_dif, &wqe->generic.wqe_com, LPFC_WQE_DIF_PASSTHRU); 3464 else if (lpfc_cmd->cur_iocbq.cmd_flag & LPFC_IO_DIF_STRIP) 3465 bf_set(wqe_dif, &wqe->generic.wqe_com, LPFC_WQE_DIF_STRIP); 3466 else if (lpfc_cmd->cur_iocbq.cmd_flag & LPFC_IO_DIF_INSERT) 3467 bf_set(wqe_dif, &wqe->generic.wqe_com, LPFC_WQE_DIF_INSERT); 3468 3469 lpfc_cmd->cur_iocbq.cmd_flag &= ~(LPFC_IO_DIF_PASS | 3470 LPFC_IO_DIF_STRIP | LPFC_IO_DIF_INSERT); 3471 3472 return 0; 3473err: 3474 if (lpfc_cmd->seg_cnt) 3475 scsi_dma_unmap(scsi_cmnd); 3476 if (lpfc_cmd->prot_seg_cnt) 3477 dma_unmap_sg(&phba->pcidev->dev, scsi_prot_sglist(scsi_cmnd), 3478 scsi_prot_sg_count(scsi_cmnd), 3479 scsi_cmnd->sc_data_direction); 3480 3481 lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT, 3482 "9084 Cannot setup S/G List for HBA " 3483 "IO segs %d/%d SGL %d SCSI %d: %d %d %d\n", 3484 lpfc_cmd->seg_cnt, lpfc_cmd->prot_seg_cnt, 3485 phba->cfg_total_seg_cnt, phba->cfg_sg_seg_cnt, 3486 prot_group_type, num_sge, ret); 3487 3488 lpfc_cmd->seg_cnt = 0; 3489 lpfc_cmd->prot_seg_cnt = 0; 3490 return ret; 3491} 3492 3493/** 3494 * lpfc_scsi_prep_dma_buf - Wrapper function for DMA mapping of scsi buffer 3495 * @phba: The Hba for which this call is being executed. 3496 * @lpfc_cmd: The scsi buffer which is going to be mapped. 3497 * 3498 * This routine wraps the actual DMA mapping function pointer from the 3499 * lpfc_hba struct. 3500 * 3501 * Return codes: 3502 * 1 - Error 3503 * 0 - Success 3504 **/ 3505static inline int 3506lpfc_scsi_prep_dma_buf(struct lpfc_hba *phba, struct lpfc_io_buf *lpfc_cmd) 3507{ 3508 return phba->lpfc_scsi_prep_dma_buf(phba, lpfc_cmd); 3509} 3510 3511/** 3512 * lpfc_bg_scsi_prep_dma_buf - Wrapper function for DMA mapping of scsi buffer 3513 * using BlockGuard. 3514 * @phba: The Hba for which this call is being executed. 3515 * @lpfc_cmd: The scsi buffer which is going to be mapped. 3516 * 3517 * This routine wraps the actual DMA mapping function pointer from the 3518 * lpfc_hba struct. 3519 * 3520 * Return codes: 3521 * 1 - Error 3522 * 0 - Success 3523 **/ 3524static inline int 3525lpfc_bg_scsi_prep_dma_buf(struct lpfc_hba *phba, struct lpfc_io_buf *lpfc_cmd) 3526{ 3527 return phba->lpfc_bg_scsi_prep_dma_buf(phba, lpfc_cmd); 3528} 3529 3530/** 3531 * lpfc_scsi_prep_cmnd_buf - Wrapper function for IOCB/WQE mapping of scsi 3532 * buffer 3533 * @vport: Pointer to vport object. 3534 * @lpfc_cmd: The scsi buffer which is going to be mapped. 3535 * @tmo: Timeout value for IO 3536 * 3537 * This routine initializes IOCB/WQE data structure from scsi command 3538 * 3539 * Return codes: 3540 * 1 - Error 3541 * 0 - Success 3542 **/ 3543static inline int 3544lpfc_scsi_prep_cmnd_buf(struct lpfc_vport *vport, struct lpfc_io_buf *lpfc_cmd, 3545 uint8_t tmo) 3546{ 3547 return vport->phba->lpfc_scsi_prep_cmnd_buf(vport, lpfc_cmd, tmo); 3548} 3549 3550/** 3551 * lpfc_send_scsi_error_event - Posts an event when there is SCSI error 3552 * @phba: Pointer to hba context object. 3553 * @vport: Pointer to vport object. 3554 * @lpfc_cmd: Pointer to lpfc scsi command which reported the error. 3555 * @fcpi_parm: FCP Initiator parameter. 3556 * 3557 * This function posts an event when there is a SCSI command reporting 3558 * error from the scsi device. 3559 **/ 3560static void 3561lpfc_send_scsi_error_event(struct lpfc_hba *phba, struct lpfc_vport *vport, 3562 struct lpfc_io_buf *lpfc_cmd, uint32_t fcpi_parm) { 3563 struct scsi_cmnd *cmnd = lpfc_cmd->pCmd; 3564 struct fcp_rsp *fcprsp = lpfc_cmd->fcp_rsp; 3565 uint32_t resp_info = fcprsp->rspStatus2; 3566 uint32_t scsi_status = fcprsp->rspStatus3; 3567 struct lpfc_fast_path_event *fast_path_evt = NULL; 3568 struct lpfc_nodelist *pnode = lpfc_cmd->rdata->pnode; 3569 unsigned long flags; 3570 3571 if (!pnode) 3572 return; 3573 3574 /* If there is queuefull or busy condition send a scsi event */ 3575 if ((cmnd->result == SAM_STAT_TASK_SET_FULL) || 3576 (cmnd->result == SAM_STAT_BUSY)) { 3577 fast_path_evt = lpfc_alloc_fast_evt(phba); 3578 if (!fast_path_evt) 3579 return; 3580 fast_path_evt->un.scsi_evt.event_type = 3581 FC_REG_SCSI_EVENT; 3582 fast_path_evt->un.scsi_evt.subcategory = 3583 (cmnd->result == SAM_STAT_TASK_SET_FULL) ? 3584 LPFC_EVENT_QFULL : LPFC_EVENT_DEVBSY; 3585 fast_path_evt->un.scsi_evt.lun = cmnd->device->lun; 3586 memcpy(&fast_path_evt->un.scsi_evt.wwpn, 3587 &pnode->nlp_portname, sizeof(struct lpfc_name)); 3588 memcpy(&fast_path_evt->un.scsi_evt.wwnn, 3589 &pnode->nlp_nodename, sizeof(struct lpfc_name)); 3590 } else if ((resp_info & SNS_LEN_VALID) && fcprsp->rspSnsLen && 3591 ((cmnd->cmnd[0] == READ_10) || (cmnd->cmnd[0] == WRITE_10))) { 3592 fast_path_evt = lpfc_alloc_fast_evt(phba); 3593 if (!fast_path_evt) 3594 return; 3595 fast_path_evt->un.check_cond_evt.scsi_event.event_type = 3596 FC_REG_SCSI_EVENT; 3597 fast_path_evt->un.check_cond_evt.scsi_event.subcategory = 3598 LPFC_EVENT_CHECK_COND; 3599 fast_path_evt->un.check_cond_evt.scsi_event.lun = 3600 cmnd->device->lun; 3601 memcpy(&fast_path_evt->un.check_cond_evt.scsi_event.wwpn, 3602 &pnode->nlp_portname, sizeof(struct lpfc_name)); 3603 memcpy(&fast_path_evt->un.check_cond_evt.scsi_event.wwnn, 3604 &pnode->nlp_nodename, sizeof(struct lpfc_name)); 3605 fast_path_evt->un.check_cond_evt.sense_key = 3606 cmnd->sense_buffer[2] & 0xf; 3607 fast_path_evt->un.check_cond_evt.asc = cmnd->sense_buffer[12]; 3608 fast_path_evt->un.check_cond_evt.ascq = cmnd->sense_buffer[13]; 3609 } else if ((cmnd->sc_data_direction == DMA_FROM_DEVICE) && 3610 fcpi_parm && 3611 ((be32_to_cpu(fcprsp->rspResId) != fcpi_parm) || 3612 ((scsi_status == SAM_STAT_GOOD) && 3613 !(resp_info & (RESID_UNDER | RESID_OVER))))) { 3614 /* 3615 * If status is good or resid does not match with fcp_param and 3616 * there is valid fcpi_parm, then there is a read_check error 3617 */ 3618 fast_path_evt = lpfc_alloc_fast_evt(phba); 3619 if (!fast_path_evt) 3620 return; 3621 fast_path_evt->un.read_check_error.header.event_type = 3622 FC_REG_FABRIC_EVENT; 3623 fast_path_evt->un.read_check_error.header.subcategory = 3624 LPFC_EVENT_FCPRDCHKERR; 3625 memcpy(&fast_path_evt->un.read_check_error.header.wwpn, 3626 &pnode->nlp_portname, sizeof(struct lpfc_name)); 3627 memcpy(&fast_path_evt->un.read_check_error.header.wwnn, 3628 &pnode->nlp_nodename, sizeof(struct lpfc_name)); 3629 fast_path_evt->un.read_check_error.lun = cmnd->device->lun; 3630 fast_path_evt->un.read_check_error.opcode = cmnd->cmnd[0]; 3631 fast_path_evt->un.read_check_error.fcpiparam = 3632 fcpi_parm; 3633 } else 3634 return; 3635 3636 fast_path_evt->vport = vport; 3637 spin_lock_irqsave(&phba->hbalock, flags); 3638 list_add_tail(&fast_path_evt->work_evt.evt_listp, &phba->work_list); 3639 spin_unlock_irqrestore(&phba->hbalock, flags); 3640 lpfc_worker_wake_up(phba); 3641 return; 3642} 3643 3644/** 3645 * lpfc_scsi_unprep_dma_buf - Un-map DMA mapping of SG-list for dev 3646 * @phba: The HBA for which this call is being executed. 3647 * @psb: The scsi buffer which is going to be un-mapped. 3648 * 3649 * This routine does DMA un-mapping of scatter gather list of scsi command 3650 * field of @lpfc_cmd for device with SLI-3 interface spec. 3651 **/ 3652static void 3653lpfc_scsi_unprep_dma_buf(struct lpfc_hba *phba, struct lpfc_io_buf *psb) 3654{ 3655 /* 3656 * There are only two special cases to consider. (1) the scsi command 3657 * requested scatter-gather usage or (2) the scsi command allocated 3658 * a request buffer, but did not request use_sg. There is a third 3659 * case, but it does not require resource deallocation. 3660 */ 3661 if (psb->seg_cnt > 0) 3662 scsi_dma_unmap(psb->pCmd); 3663 if (psb->prot_seg_cnt > 0) 3664 dma_unmap_sg(&phba->pcidev->dev, scsi_prot_sglist(psb->pCmd), 3665 scsi_prot_sg_count(psb->pCmd), 3666 psb->pCmd->sc_data_direction); 3667} 3668 3669/** 3670 * lpfc_unblock_requests - allow further commands to be queued. 3671 * @phba: pointer to phba object 3672 * 3673 * For single vport, just call scsi_unblock_requests on physical port. 3674 * For multiple vports, send scsi_unblock_requests for all the vports. 3675 */ 3676void 3677lpfc_unblock_requests(struct lpfc_hba *phba) 3678{ 3679 struct lpfc_vport **vports; 3680 struct Scsi_Host *shost; 3681 int i; 3682 3683 if (phba->sli_rev == LPFC_SLI_REV4 && 3684 !phba->sli4_hba.max_cfg_param.vpi_used) { 3685 shost = lpfc_shost_from_vport(phba->pport); 3686 scsi_unblock_requests(shost); 3687 return; 3688 } 3689 3690 vports = lpfc_create_vport_work_array(phba); 3691 if (vports != NULL) 3692 for (i = 0; i <= phba->max_vports && vports[i] != NULL; i++) { 3693 shost = lpfc_shost_from_vport(vports[i]); 3694 scsi_unblock_requests(shost); 3695 } 3696 lpfc_destroy_vport_work_array(phba, vports); 3697} 3698 3699/** 3700 * lpfc_block_requests - prevent further commands from being queued. 3701 * @phba: pointer to phba object 3702 * 3703 * For single vport, just call scsi_block_requests on physical port. 3704 * For multiple vports, send scsi_block_requests for all the vports. 3705 */ 3706void 3707lpfc_block_requests(struct lpfc_hba *phba) 3708{ 3709 struct lpfc_vport **vports; 3710 struct Scsi_Host *shost; 3711 int i; 3712 3713 if (atomic_read(&phba->cmf_stop_io)) 3714 return; 3715 3716 if (phba->sli_rev == LPFC_SLI_REV4 && 3717 !phba->sli4_hba.max_cfg_param.vpi_used) { 3718 shost = lpfc_shost_from_vport(phba->pport); 3719 scsi_block_requests(shost); 3720 return; 3721 } 3722 3723 vports = lpfc_create_vport_work_array(phba); 3724 if (vports != NULL) 3725 for (i = 0; i <= phba->max_vports && vports[i] != NULL; i++) { 3726 shost = lpfc_shost_from_vport(vports[i]); 3727 scsi_block_requests(shost); 3728 } 3729 lpfc_destroy_vport_work_array(phba, vports); 3730} 3731 3732/** 3733 * lpfc_update_cmf_cmpl - Adjust CMF counters for IO completion 3734 * @phba: The HBA for which this call is being executed. 3735 * @time: The latency of the IO that completed (in ns) 3736 * @size: The size of the IO that completed 3737 * @shost: SCSI host the IO completed on (NULL for a NVME IO) 3738 * 3739 * The routine adjusts the various Burst and Bandwidth counters used in 3740 * Congestion management and E2E. If time is set to LPFC_CGN_NOT_SENT, 3741 * that means the IO was never issued to the HBA, so this routine is 3742 * just being called to cleanup the counter from a previous 3743 * lpfc_update_cmf_cmd call. 3744 */ 3745int 3746lpfc_update_cmf_cmpl(struct lpfc_hba *phba, 3747 uint64_t time, uint32_t size, struct Scsi_Host *shost) 3748{ 3749 struct lpfc_cgn_stat *cgs; 3750 3751 if (time != LPFC_CGN_NOT_SENT) { 3752 /* lat is ns coming in, save latency in us */ 3753 if (time < 1000) 3754 time = 1; 3755 else 3756 time = div_u64(time + 500, 1000); /* round it */ 3757 3758 cgs = per_cpu_ptr(phba->cmf_stat, raw_smp_processor_id()); 3759 atomic64_add(size, &cgs->rcv_bytes); 3760 atomic64_add(time, &cgs->rx_latency); 3761 atomic_inc(&cgs->rx_io_cnt); 3762 } 3763 return 0; 3764} 3765 3766/** 3767 * lpfc_update_cmf_cmd - Adjust CMF counters for IO submission 3768 * @phba: The HBA for which this call is being executed. 3769 * @size: The size of the IO that will be issued 3770 * 3771 * The routine adjusts the various Burst and Bandwidth counters used in 3772 * Congestion management and E2E. 3773 */ 3774int 3775lpfc_update_cmf_cmd(struct lpfc_hba *phba, uint32_t size) 3776{ 3777 uint64_t total; 3778 struct lpfc_cgn_stat *cgs; 3779 int cpu; 3780 3781 /* At this point we are either LPFC_CFG_MANAGED or LPFC_CFG_MONITOR */ 3782 if (phba->cmf_active_mode == LPFC_CFG_MANAGED && 3783 phba->cmf_max_bytes_per_interval) { 3784 total = 0; 3785 for_each_present_cpu(cpu) { 3786 cgs = per_cpu_ptr(phba->cmf_stat, cpu); 3787 total += atomic64_read(&cgs->total_bytes); 3788 } 3789 if (total >= phba->cmf_max_bytes_per_interval) { 3790 if (!atomic_xchg(&phba->cmf_bw_wait, 1)) { 3791 lpfc_block_requests(phba); 3792 phba->cmf_last_ts = 3793 lpfc_calc_cmf_latency(phba); 3794 } 3795 atomic_inc(&phba->cmf_busy); 3796 return -EBUSY; 3797 } 3798 if (size > atomic_read(&phba->rx_max_read_cnt)) 3799 atomic_set(&phba->rx_max_read_cnt, size); 3800 } 3801 3802 cgs = per_cpu_ptr(phba->cmf_stat, raw_smp_processor_id()); 3803 atomic64_add(size, &cgs->total_bytes); 3804 return 0; 3805} 3806 3807/** 3808 * lpfc_handle_fcp_err - FCP response handler 3809 * @vport: The virtual port for which this call is being executed. 3810 * @lpfc_cmd: Pointer to lpfc_io_buf data structure. 3811 * @fcpi_parm: FCP Initiator parameter. 3812 * 3813 * This routine is called to process response IOCB with status field 3814 * IOSTAT_FCP_RSP_ERROR. This routine sets result field of scsi command 3815 * based upon SCSI and FCP error. 3816 **/ 3817static void 3818lpfc_handle_fcp_err(struct lpfc_vport *vport, struct lpfc_io_buf *lpfc_cmd, 3819 uint32_t fcpi_parm) 3820{ 3821 struct scsi_cmnd *cmnd = lpfc_cmd->pCmd; 3822 struct fcp_cmnd *fcpcmd = lpfc_cmd->fcp_cmnd; 3823 struct fcp_rsp *fcprsp = lpfc_cmd->fcp_rsp; 3824 uint32_t resp_info = fcprsp->rspStatus2; 3825 uint32_t scsi_status = fcprsp->rspStatus3; 3826 uint32_t *lp; 3827 uint32_t host_status = DID_OK; 3828 uint32_t rsplen = 0; 3829 uint32_t fcpDl; 3830 uint32_t logit = LOG_FCP | LOG_FCP_ERROR; 3831 3832 3833 /* 3834 * If this is a task management command, there is no 3835 * scsi packet associated with this lpfc_cmd. The driver 3836 * consumes it. 3837 */ 3838 if (fcpcmd->fcpCntl2) { 3839 scsi_status = 0; 3840 goto out; 3841 } 3842 3843 if (resp_info & RSP_LEN_VALID) { 3844 rsplen = be32_to_cpu(fcprsp->rspRspLen); 3845 if (rsplen != 0 && rsplen != 4 && rsplen != 8) { 3846 lpfc_printf_vlog(vport, KERN_ERR, LOG_TRACE_EVENT, 3847 "2719 Invalid response length: " 3848 "tgt x%x lun x%llx cmnd x%x rsplen " 3849 "x%x\n", cmnd->device->id, 3850 cmnd->device->lun, cmnd->cmnd[0], 3851 rsplen); 3852 host_status = DID_ERROR; 3853 goto out; 3854 } 3855 if (fcprsp->rspInfo3 != RSP_NO_FAILURE) { 3856 lpfc_printf_vlog(vport, KERN_ERR, LOG_TRACE_EVENT, 3857 "2757 Protocol failure detected during " 3858 "processing of FCP I/O op: " 3859 "tgt x%x lun x%llx cmnd x%x rspInfo3 x%x\n", 3860 cmnd->device->id, 3861 cmnd->device->lun, cmnd->cmnd[0], 3862 fcprsp->rspInfo3); 3863 host_status = DID_ERROR; 3864 goto out; 3865 } 3866 } 3867 3868 if ((resp_info & SNS_LEN_VALID) && fcprsp->rspSnsLen) { 3869 uint32_t snslen = be32_to_cpu(fcprsp->rspSnsLen); 3870 if (snslen > SCSI_SENSE_BUFFERSIZE) 3871 snslen = SCSI_SENSE_BUFFERSIZE; 3872 3873 if (resp_info & RSP_LEN_VALID) 3874 rsplen = be32_to_cpu(fcprsp->rspRspLen); 3875 memcpy(cmnd->sense_buffer, &fcprsp->rspInfo0 + rsplen, snslen); 3876 } 3877 lp = (uint32_t *)cmnd->sense_buffer; 3878 3879 /* special handling for under run conditions */ 3880 if (!scsi_status && (resp_info & RESID_UNDER)) { 3881 /* don't log under runs if fcp set... */ 3882 if (vport->cfg_log_verbose & LOG_FCP) 3883 logit = LOG_FCP_ERROR; 3884 /* unless operator says so */ 3885 if (vport->cfg_log_verbose & LOG_FCP_UNDER) 3886 logit = LOG_FCP_UNDER; 3887 } 3888 3889 lpfc_printf_vlog(vport, KERN_WARNING, logit, 3890 "9024 FCP command x%x failed: x%x SNS x%x x%x " 3891 "Data: x%x x%x x%x x%x x%x\n", 3892 cmnd->cmnd[0], scsi_status, 3893 be32_to_cpu(*lp), be32_to_cpu(*(lp + 3)), resp_info, 3894 be32_to_cpu(fcprsp->rspResId), 3895 be32_to_cpu(fcprsp->rspSnsLen), 3896 be32_to_cpu(fcprsp->rspRspLen), 3897 fcprsp->rspInfo3); 3898 3899 scsi_set_resid(cmnd, 0); 3900 fcpDl = be32_to_cpu(fcpcmd->fcpDl); 3901 if (resp_info & RESID_UNDER) { 3902 scsi_set_resid(cmnd, be32_to_cpu(fcprsp->rspResId)); 3903 3904 lpfc_printf_vlog(vport, KERN_INFO, LOG_FCP_UNDER, 3905 "9025 FCP Underrun, expected %d, " 3906 "residual %d Data: x%x x%x x%x\n", 3907 fcpDl, 3908 scsi_get_resid(cmnd), fcpi_parm, cmnd->cmnd[0], 3909 cmnd->underflow); 3910 3911 /* 3912 * If there is an under run, check if under run reported by 3913 * storage array is same as the under run reported by HBA. 3914 * If this is not same, there is a dropped frame. 3915 */ 3916 if (fcpi_parm && (scsi_get_resid(cmnd) != fcpi_parm)) { 3917 lpfc_printf_vlog(vport, KERN_WARNING, 3918 LOG_FCP | LOG_FCP_ERROR, 3919 "9026 FCP Read Check Error " 3920 "and Underrun Data: x%x x%x x%x x%x\n", 3921 fcpDl, 3922 scsi_get_resid(cmnd), fcpi_parm, 3923 cmnd->cmnd[0]); 3924 scsi_set_resid(cmnd, scsi_bufflen(cmnd)); 3925 host_status = DID_ERROR; 3926 } 3927 /* 3928 * The cmnd->underflow is the minimum number of bytes that must 3929 * be transferred for this command. Provided a sense condition 3930 * is not present, make sure the actual amount transferred is at 3931 * least the underflow value or fail. 3932 */ 3933 if (!(resp_info & SNS_LEN_VALID) && 3934 (scsi_status == SAM_STAT_GOOD) && 3935 (scsi_bufflen(cmnd) - scsi_get_resid(cmnd) 3936 < cmnd->underflow)) { 3937 lpfc_printf_vlog(vport, KERN_INFO, LOG_FCP, 3938 "9027 FCP command x%x residual " 3939 "underrun converted to error " 3940 "Data: x%x x%x x%x\n", 3941 cmnd->cmnd[0], scsi_bufflen(cmnd), 3942 scsi_get_resid(cmnd), cmnd->underflow); 3943 host_status = DID_ERROR; 3944 } 3945 } else if (resp_info & RESID_OVER) { 3946 lpfc_printf_vlog(vport, KERN_WARNING, LOG_FCP, 3947 "9028 FCP command x%x residual overrun error. " 3948 "Data: x%x x%x\n", cmnd->cmnd[0], 3949 scsi_bufflen(cmnd), scsi_get_resid(cmnd)); 3950 host_status = DID_ERROR; 3951 3952 /* 3953 * Check SLI validation that all the transfer was actually done 3954 * (fcpi_parm should be zero). Apply check only to reads. 3955 */ 3956 } else if (fcpi_parm) { 3957 lpfc_printf_vlog(vport, KERN_WARNING, LOG_FCP | LOG_FCP_ERROR, 3958 "9029 FCP %s Check Error Data: " 3959 "x%x x%x x%x x%x x%x\n", 3960 ((cmnd->sc_data_direction == DMA_FROM_DEVICE) ? 3961 "Read" : "Write"), 3962 fcpDl, be32_to_cpu(fcprsp->rspResId), 3963 fcpi_parm, cmnd->cmnd[0], scsi_status); 3964 3965 /* There is some issue with the LPe12000 that causes it 3966 * to miscalculate the fcpi_parm and falsely trip this 3967 * recovery logic. Detect this case and don't error when true. 3968 */ 3969 if (fcpi_parm > fcpDl) 3970 goto out; 3971 3972 switch (scsi_status) { 3973 case SAM_STAT_GOOD: 3974 case SAM_STAT_CHECK_CONDITION: 3975 /* Fabric dropped a data frame. Fail any successful 3976 * command in which we detected dropped frames. 3977 * A status of good or some check conditions could 3978 * be considered a successful command. 3979 */ 3980 host_status = DID_ERROR; 3981 break; 3982 } 3983 scsi_set_resid(cmnd, scsi_bufflen(cmnd)); 3984 } 3985 3986 out: 3987 cmnd->result = host_status << 16 | scsi_status; 3988 lpfc_send_scsi_error_event(vport->phba, vport, lpfc_cmd, fcpi_parm); 3989} 3990 3991/** 3992 * lpfc_fcp_io_cmd_wqe_cmpl - Complete a FCP IO 3993 * @phba: The hba for which this call is being executed. 3994 * @pwqeIn: The command WQE for the scsi cmnd. 3995 * @pwqeOut: Pointer to driver response WQE object. 3996 * 3997 * This routine assigns scsi command result by looking into response WQE 3998 * status field appropriately. This routine handles QUEUE FULL condition as 3999 * well by ramping down device queue depth. 4000 **/ 4001static void 4002lpfc_fcp_io_cmd_wqe_cmpl(struct lpfc_hba *phba, struct lpfc_iocbq *pwqeIn, 4003 struct lpfc_iocbq *pwqeOut) 4004{ 4005 struct lpfc_io_buf *lpfc_cmd = pwqeIn->io_buf; 4006 struct lpfc_wcqe_complete *wcqe = &pwqeOut->wcqe_cmpl; 4007 struct lpfc_vport *vport = pwqeIn->vport; 4008 struct lpfc_rport_data *rdata; 4009 struct lpfc_nodelist *ndlp; 4010 struct scsi_cmnd *cmd; 4011 unsigned long flags; 4012 struct lpfc_fast_path_event *fast_path_evt; 4013 struct Scsi_Host *shost; 4014 u32 logit = LOG_FCP; 4015 u32 idx; 4016 u32 lat; 4017 u8 wait_xb_clr = 0; 4018 4019 /* Sanity check on return of outstanding command */ 4020 if (!lpfc_cmd) { 4021 lpfc_printf_vlog(vport, KERN_ERR, LOG_TRACE_EVENT, 4022 "9032 Null lpfc_cmd pointer. No " 4023 "release, skip completion\n"); 4024 return; 4025 } 4026 4027 rdata = lpfc_cmd->rdata; 4028 ndlp = rdata->pnode; 4029 4030 /* Sanity check on return of outstanding command */ 4031 cmd = lpfc_cmd->pCmd; 4032 if (!cmd) { 4033 lpfc_printf_vlog(vport, KERN_ERR, LOG_TRACE_EVENT, 4034 "9042 I/O completion: Not an active IO\n"); 4035 lpfc_release_scsi_buf(phba, lpfc_cmd); 4036 return; 4037 } 4038 /* Guard against abort handler being called at same time */ 4039 spin_lock(&lpfc_cmd->buf_lock); 4040 idx = lpfc_cmd->cur_iocbq.hba_wqidx; 4041 if (phba->sli4_hba.hdwq) 4042 phba->sli4_hba.hdwq[idx].scsi_cstat.io_cmpls++; 4043 4044#ifdef CONFIG_SCSI_LPFC_DEBUG_FS 4045 if (unlikely(phba->hdwqstat_on & LPFC_CHECK_SCSI_IO)) 4046 this_cpu_inc(phba->sli4_hba.c_stat->cmpl_io); 4047#endif 4048 shost = cmd->device->host; 4049 4050 lpfc_cmd->status = bf_get(lpfc_wcqe_c_status, wcqe); 4051 lpfc_cmd->result = (wcqe->parameter & IOERR_PARAM_MASK); 4052 4053 lpfc_cmd->flags &= ~LPFC_SBUF_XBUSY; 4054 if (bf_get(lpfc_wcqe_c_xb, wcqe)) { 4055 lpfc_cmd->flags |= LPFC_SBUF_XBUSY; 4056 if (phba->cfg_fcp_wait_abts_rsp) 4057 wait_xb_clr = 1; 4058 } 4059 4060#ifdef CONFIG_SCSI_LPFC_DEBUG_FS 4061 if (lpfc_cmd->prot_data_type) { 4062 struct scsi_dif_tuple *src = NULL; 4063 4064 src = (struct scsi_dif_tuple *)lpfc_cmd->prot_data_segment; 4065 /* 4066 * Used to restore any changes to protection 4067 * data for error injection. 4068 */ 4069 switch (lpfc_cmd->prot_data_type) { 4070 case LPFC_INJERR_REFTAG: 4071 src->ref_tag = 4072 lpfc_cmd->prot_data; 4073 break; 4074 case LPFC_INJERR_APPTAG: 4075 src->app_tag = 4076 (uint16_t)lpfc_cmd->prot_data; 4077 break; 4078 case LPFC_INJERR_GUARD: 4079 src->guard_tag = 4080 (uint16_t)lpfc_cmd->prot_data; 4081 break; 4082 default: 4083 break; 4084 } 4085 4086 lpfc_cmd->prot_data = 0; 4087 lpfc_cmd->prot_data_type = 0; 4088 lpfc_cmd->prot_data_segment = NULL; 4089 } 4090#endif 4091 if (unlikely(lpfc_cmd->status)) { 4092 if (lpfc_cmd->status == IOSTAT_FCP_RSP_ERROR && 4093 !lpfc_cmd->fcp_rsp->rspStatus3 && 4094 (lpfc_cmd->fcp_rsp->rspStatus2 & RESID_UNDER) && 4095 !(vport->cfg_log_verbose & LOG_FCP_UNDER)) 4096 logit = 0; 4097 else 4098 logit = LOG_FCP | LOG_FCP_UNDER; 4099 lpfc_printf_vlog(vport, KERN_WARNING, logit, 4100 "9034 FCP cmd x%x failed <%d/%lld> " 4101 "status: x%x result: x%x " 4102 "sid: x%x did: x%x oxid: x%x " 4103 "Data: x%x x%x x%x\n", 4104 cmd->cmnd[0], 4105 cmd->device ? cmd->device->id : 0xffff, 4106 cmd->device ? cmd->device->lun : 0xffff, 4107 lpfc_cmd->status, lpfc_cmd->result, 4108 vport->fc_myDID, 4109 (ndlp) ? ndlp->nlp_DID : 0, 4110 lpfc_cmd->cur_iocbq.sli4_xritag, 4111 wcqe->parameter, wcqe->total_data_placed, 4112 lpfc_cmd->cur_iocbq.iotag); 4113 } 4114 4115 switch (lpfc_cmd->status) { 4116 case CQE_STATUS_SUCCESS: 4117 cmd->result = DID_OK << 16; 4118 break; 4119 case CQE_STATUS_FCP_RSP_FAILURE: 4120 lpfc_handle_fcp_err(vport, lpfc_cmd, 4121 pwqeIn->wqe.fcp_iread.total_xfer_len - 4122 wcqe->total_data_placed); 4123 break; 4124 case CQE_STATUS_NPORT_BSY: 4125 case CQE_STATUS_FABRIC_BSY: 4126 cmd->result = DID_TRANSPORT_DISRUPTED << 16; 4127 fast_path_evt = lpfc_alloc_fast_evt(phba); 4128 if (!fast_path_evt) 4129 break; 4130 fast_path_evt->un.fabric_evt.event_type = 4131 FC_REG_FABRIC_EVENT; 4132 fast_path_evt->un.fabric_evt.subcategory = 4133 (lpfc_cmd->status == IOSTAT_NPORT_BSY) ? 4134 LPFC_EVENT_PORT_BUSY : LPFC_EVENT_FABRIC_BUSY; 4135 if (ndlp) { 4136 memcpy(&fast_path_evt->un.fabric_evt.wwpn, 4137 &ndlp->nlp_portname, 4138 sizeof(struct lpfc_name)); 4139 memcpy(&fast_path_evt->un.fabric_evt.wwnn, 4140 &ndlp->nlp_nodename, 4141 sizeof(struct lpfc_name)); 4142 } 4143 fast_path_evt->vport = vport; 4144 fast_path_evt->work_evt.evt = 4145 LPFC_EVT_FASTPATH_MGMT_EVT; 4146 spin_lock_irqsave(&phba->hbalock, flags); 4147 list_add_tail(&fast_path_evt->work_evt.evt_listp, 4148 &phba->work_list); 4149 spin_unlock_irqrestore(&phba->hbalock, flags); 4150 lpfc_worker_wake_up(phba); 4151 lpfc_printf_vlog(vport, KERN_WARNING, logit, 4152 "9035 Fabric/Node busy FCP cmd x%x failed" 4153 " <%d/%lld> " 4154 "status: x%x result: x%x " 4155 "sid: x%x did: x%x oxid: x%x " 4156 "Data: x%x x%x x%x\n", 4157 cmd->cmnd[0], 4158 cmd->device ? cmd->device->id : 0xffff, 4159 cmd->device ? cmd->device->lun : 0xffff, 4160 lpfc_cmd->status, lpfc_cmd->result, 4161 vport->fc_myDID, 4162 (ndlp) ? ndlp->nlp_DID : 0, 4163 lpfc_cmd->cur_iocbq.sli4_xritag, 4164 wcqe->parameter, 4165 wcqe->total_data_placed, 4166 lpfc_cmd->cur_iocbq.iocb.ulpIoTag); 4167 break; 4168 case CQE_STATUS_DI_ERROR: 4169 if (bf_get(lpfc_wcqe_c_bg_edir, wcqe)) 4170 lpfc_cmd->result = IOERR_RX_DMA_FAILED; 4171 else 4172 lpfc_cmd->result = IOERR_TX_DMA_FAILED; 4173 lpfc_printf_vlog(vport, KERN_WARNING, LOG_FCP | LOG_BG, 4174 "9048 DI Error xri x%x status x%x DI ext " 4175 "status x%x data placed x%x\n", 4176 lpfc_cmd->cur_iocbq.sli4_xritag, 4177 lpfc_cmd->status, wcqe->parameter, 4178 wcqe->total_data_placed); 4179 if (scsi_get_prot_op(cmd) != SCSI_PROT_NORMAL) { 4180 /* BG enabled cmd. Parse BG error */ 4181 lpfc_parse_bg_err(phba, lpfc_cmd, pwqeOut); 4182 break; 4183 } 4184 cmd->result = DID_ERROR << 16; 4185 lpfc_printf_vlog(vport, KERN_WARNING, LOG_BG, 4186 "9040 DI Error on unprotected cmd\n"); 4187 break; 4188 case CQE_STATUS_REMOTE_STOP: 4189 if (ndlp) { 4190 /* This I/O was aborted by the target, we don't 4191 * know the rxid and because we did not send the 4192 * ABTS we cannot generate and RRQ. 4193 */ 4194 lpfc_set_rrq_active(phba, ndlp, 4195 lpfc_cmd->cur_iocbq.sli4_lxritag, 4196 0, 0); 4197 } 4198 fallthrough; 4199 case CQE_STATUS_LOCAL_REJECT: 4200 if (lpfc_cmd->result & IOERR_DRVR_MASK) 4201 lpfc_cmd->status = IOSTAT_DRIVER_REJECT; 4202 if (lpfc_cmd->result == IOERR_ELXSEC_KEY_UNWRAP_ERROR || 4203 lpfc_cmd->result == 4204 IOERR_ELXSEC_KEY_UNWRAP_COMPARE_ERROR || 4205 lpfc_cmd->result == IOERR_ELXSEC_CRYPTO_ERROR || 4206 lpfc_cmd->result == 4207 IOERR_ELXSEC_CRYPTO_COMPARE_ERROR) { 4208 cmd->result = DID_NO_CONNECT << 16; 4209 break; 4210 } 4211 if (lpfc_cmd->result == IOERR_INVALID_RPI || 4212 lpfc_cmd->result == IOERR_LINK_DOWN || 4213 lpfc_cmd->result == IOERR_NO_RESOURCES || 4214 lpfc_cmd->result == IOERR_ABORT_REQUESTED || 4215 lpfc_cmd->result == IOERR_RPI_SUSPENDED || 4216 lpfc_cmd->result == IOERR_SLER_CMD_RCV_FAILURE) { 4217 cmd->result = DID_TRANSPORT_DISRUPTED << 16; 4218 break; 4219 } 4220 lpfc_printf_vlog(vport, KERN_WARNING, logit, 4221 "9036 Local Reject FCP cmd x%x failed" 4222 " <%d/%lld> " 4223 "status: x%x result: x%x " 4224 "sid: x%x did: x%x oxid: x%x " 4225 "Data: x%x x%x x%x\n", 4226 cmd->cmnd[0], 4227 cmd->device ? cmd->device->id : 0xffff, 4228 cmd->device ? cmd->device->lun : 0xffff, 4229 lpfc_cmd->status, lpfc_cmd->result, 4230 vport->fc_myDID, 4231 (ndlp) ? ndlp->nlp_DID : 0, 4232 lpfc_cmd->cur_iocbq.sli4_xritag, 4233 wcqe->parameter, 4234 wcqe->total_data_placed, 4235 lpfc_cmd->cur_iocbq.iocb.ulpIoTag); 4236 fallthrough; 4237 default: 4238 cmd->result = DID_ERROR << 16; 4239 lpfc_printf_vlog(vport, KERN_INFO, LOG_FCP, 4240 "9037 FCP Completion Error: xri %x " 4241 "status x%x result x%x [x%x] " 4242 "placed x%x\n", 4243 lpfc_cmd->cur_iocbq.sli4_xritag, 4244 lpfc_cmd->status, lpfc_cmd->result, 4245 wcqe->parameter, 4246 wcqe->total_data_placed); 4247 } 4248 if (cmd->result || lpfc_cmd->fcp_rsp->rspSnsLen) { 4249 u32 *lp = (u32 *)cmd->sense_buffer; 4250 4251 lpfc_printf_vlog(vport, KERN_INFO, LOG_FCP, 4252 "9039 Iodone <%d/%llu> cmd x%px, error " 4253 "x%x SNS x%x x%x LBA x%llx Data: x%x x%x\n", 4254 cmd->device->id, cmd->device->lun, cmd, 4255 cmd->result, *lp, *(lp + 3), 4256 (cmd->device->sector_size) ? 4257 (u64)scsi_get_lba(cmd) : 0, 4258 cmd->retries, scsi_get_resid(cmd)); 4259 } 4260 4261 if (vport->cfg_max_scsicmpl_time && 4262 time_after(jiffies, lpfc_cmd->start_time + 4263 msecs_to_jiffies(vport->cfg_max_scsicmpl_time))) { 4264 spin_lock_irqsave(shost->host_lock, flags); 4265 if (ndlp) { 4266 if (ndlp->cmd_qdepth > 4267 atomic_read(&ndlp->cmd_pending) && 4268 (atomic_read(&ndlp->cmd_pending) > 4269 LPFC_MIN_TGT_QDEPTH) && 4270 (cmd->cmnd[0] == READ_10 || 4271 cmd->cmnd[0] == WRITE_10)) 4272 ndlp->cmd_qdepth = 4273 atomic_read(&ndlp->cmd_pending); 4274 4275 ndlp->last_change_time = jiffies; 4276 } 4277 spin_unlock_irqrestore(shost->host_lock, flags); 4278 } 4279 lpfc_scsi_unprep_dma_buf(phba, lpfc_cmd); 4280 4281#ifdef CONFIG_SCSI_LPFC_DEBUG_FS 4282 if (lpfc_cmd->ts_cmd_start) { 4283 lpfc_cmd->ts_isr_cmpl = lpfc_cmd->cur_iocbq.isr_timestamp; 4284 lpfc_cmd->ts_data_io = ktime_get_ns(); 4285 phba->ktime_last_cmd = lpfc_cmd->ts_data_io; 4286 lpfc_io_ktime(phba, lpfc_cmd); 4287 } 4288#endif 4289 if (likely(!wait_xb_clr)) 4290 lpfc_cmd->pCmd = NULL; 4291 spin_unlock(&lpfc_cmd->buf_lock); 4292 4293 /* Check if IO qualified for CMF */ 4294 if (phba->cmf_active_mode != LPFC_CFG_OFF && 4295 cmd->sc_data_direction == DMA_FROM_DEVICE && 4296 (scsi_sg_count(cmd))) { 4297 /* Used when calculating average latency */ 4298 lat = ktime_get_ns() - lpfc_cmd->rx_cmd_start; 4299 lpfc_update_cmf_cmpl(phba, lat, scsi_bufflen(cmd), shost); 4300 } 4301 4302 if (wait_xb_clr) 4303 goto out; 4304 4305 /* The sdev is not guaranteed to be valid post scsi_done upcall. */ 4306 scsi_done(cmd); 4307 4308 /* 4309 * If there is an abort thread waiting for command completion 4310 * wake up the thread. 4311 */ 4312 spin_lock(&lpfc_cmd->buf_lock); 4313 lpfc_cmd->cur_iocbq.cmd_flag &= ~LPFC_DRIVER_ABORTED; 4314 if (lpfc_cmd->waitq) 4315 wake_up(lpfc_cmd->waitq); 4316 spin_unlock(&lpfc_cmd->buf_lock); 4317out: 4318 lpfc_release_scsi_buf(phba, lpfc_cmd); 4319} 4320 4321/** 4322 * lpfc_scsi_cmd_iocb_cmpl - Scsi cmnd IOCB completion routine 4323 * @phba: The Hba for which this call is being executed. 4324 * @pIocbIn: The command IOCBQ for the scsi cmnd. 4325 * @pIocbOut: The response IOCBQ for the scsi cmnd. 4326 * 4327 * This routine assigns scsi command result by looking into response IOCB 4328 * status field appropriately. This routine handles QUEUE FULL condition as 4329 * well by ramping down device queue depth. 4330 **/ 4331static void 4332lpfc_scsi_cmd_iocb_cmpl(struct lpfc_hba *phba, struct lpfc_iocbq *pIocbIn, 4333 struct lpfc_iocbq *pIocbOut) 4334{ 4335 struct lpfc_io_buf *lpfc_cmd = 4336 (struct lpfc_io_buf *) pIocbIn->io_buf; 4337 struct lpfc_vport *vport = pIocbIn->vport; 4338 struct lpfc_rport_data *rdata = lpfc_cmd->rdata; 4339 struct lpfc_nodelist *pnode = rdata->pnode; 4340 struct scsi_cmnd *cmd; 4341 unsigned long flags; 4342 struct lpfc_fast_path_event *fast_path_evt; 4343 struct Scsi_Host *shost; 4344 int idx; 4345 uint32_t logit = LOG_FCP; 4346 4347 /* Guard against abort handler being called at same time */ 4348 spin_lock(&lpfc_cmd->buf_lock); 4349 4350 /* Sanity check on return of outstanding command */ 4351 cmd = lpfc_cmd->pCmd; 4352 if (!cmd || !phba) { 4353 lpfc_printf_vlog(vport, KERN_ERR, LOG_TRACE_EVENT, 4354 "2621 IO completion: Not an active IO\n"); 4355 spin_unlock(&lpfc_cmd->buf_lock); 4356 return; 4357 } 4358 4359 idx = lpfc_cmd->cur_iocbq.hba_wqidx; 4360 if (phba->sli4_hba.hdwq) 4361 phba->sli4_hba.hdwq[idx].scsi_cstat.io_cmpls++; 4362 4363#ifdef CONFIG_SCSI_LPFC_DEBUG_FS 4364 if (unlikely(phba->hdwqstat_on & LPFC_CHECK_SCSI_IO)) 4365 this_cpu_inc(phba->sli4_hba.c_stat->cmpl_io); 4366#endif 4367 shost = cmd->device->host; 4368 4369 lpfc_cmd->result = (pIocbOut->iocb.un.ulpWord[4] & IOERR_PARAM_MASK); 4370 lpfc_cmd->status = pIocbOut->iocb.ulpStatus; 4371 /* pick up SLI4 exchange busy status from HBA */ 4372 lpfc_cmd->flags &= ~LPFC_SBUF_XBUSY; 4373 if (pIocbOut->cmd_flag & LPFC_EXCHANGE_BUSY) 4374 lpfc_cmd->flags |= LPFC_SBUF_XBUSY; 4375 4376#ifdef CONFIG_SCSI_LPFC_DEBUG_FS 4377 if (lpfc_cmd->prot_data_type) { 4378 struct scsi_dif_tuple *src = NULL; 4379 4380 src = (struct scsi_dif_tuple *)lpfc_cmd->prot_data_segment; 4381 /* 4382 * Used to restore any changes to protection 4383 * data for error injection. 4384 */ 4385 switch (lpfc_cmd->prot_data_type) { 4386 case LPFC_INJERR_REFTAG: 4387 src->ref_tag = 4388 lpfc_cmd->prot_data; 4389 break; 4390 case LPFC_INJERR_APPTAG: 4391 src->app_tag = 4392 (uint16_t)lpfc_cmd->prot_data; 4393 break; 4394 case LPFC_INJERR_GUARD: 4395 src->guard_tag = 4396 (uint16_t)lpfc_cmd->prot_data; 4397 break; 4398 default: 4399 break; 4400 } 4401 4402 lpfc_cmd->prot_data = 0; 4403 lpfc_cmd->prot_data_type = 0; 4404 lpfc_cmd->prot_data_segment = NULL; 4405 } 4406#endif 4407 4408 if (unlikely(lpfc_cmd->status)) { 4409 if (lpfc_cmd->status == IOSTAT_LOCAL_REJECT && 4410 (lpfc_cmd->result & IOERR_DRVR_MASK)) 4411 lpfc_cmd->status = IOSTAT_DRIVER_REJECT; 4412 else if (lpfc_cmd->status >= IOSTAT_CNT) 4413 lpfc_cmd->status = IOSTAT_DEFAULT; 4414 if (lpfc_cmd->status == IOSTAT_FCP_RSP_ERROR && 4415 !lpfc_cmd->fcp_rsp->rspStatus3 && 4416 (lpfc_cmd->fcp_rsp->rspStatus2 & RESID_UNDER) && 4417 !(vport->cfg_log_verbose & LOG_FCP_UNDER)) 4418 logit = 0; 4419 else 4420 logit = LOG_FCP | LOG_FCP_UNDER; 4421 lpfc_printf_vlog(vport, KERN_WARNING, logit, 4422 "9030 FCP cmd x%x failed <%d/%lld> " 4423 "status: x%x result: x%x " 4424 "sid: x%x did: x%x oxid: x%x " 4425 "Data: x%x x%x\n", 4426 cmd->cmnd[0], 4427 cmd->device ? cmd->device->id : 0xffff, 4428 cmd->device ? cmd->device->lun : 0xffff, 4429 lpfc_cmd->status, lpfc_cmd->result, 4430 vport->fc_myDID, 4431 (pnode) ? pnode->nlp_DID : 0, 4432 phba->sli_rev == LPFC_SLI_REV4 ? 4433 lpfc_cmd->cur_iocbq.sli4_xritag : 0xffff, 4434 pIocbOut->iocb.ulpContext, 4435 lpfc_cmd->cur_iocbq.iocb.ulpIoTag); 4436 4437 switch (lpfc_cmd->status) { 4438 case IOSTAT_FCP_RSP_ERROR: 4439 /* Call FCP RSP handler to determine result */ 4440 lpfc_handle_fcp_err(vport, lpfc_cmd, 4441 pIocbOut->iocb.un.fcpi.fcpi_parm); 4442 break; 4443 case IOSTAT_NPORT_BSY: 4444 case IOSTAT_FABRIC_BSY: 4445 cmd->result = DID_TRANSPORT_DISRUPTED << 16; 4446 fast_path_evt = lpfc_alloc_fast_evt(phba); 4447 if (!fast_path_evt) 4448 break; 4449 fast_path_evt->un.fabric_evt.event_type = 4450 FC_REG_FABRIC_EVENT; 4451 fast_path_evt->un.fabric_evt.subcategory = 4452 (lpfc_cmd->status == IOSTAT_NPORT_BSY) ? 4453 LPFC_EVENT_PORT_BUSY : LPFC_EVENT_FABRIC_BUSY; 4454 if (pnode) { 4455 memcpy(&fast_path_evt->un.fabric_evt.wwpn, 4456 &pnode->nlp_portname, 4457 sizeof(struct lpfc_name)); 4458 memcpy(&fast_path_evt->un.fabric_evt.wwnn, 4459 &pnode->nlp_nodename, 4460 sizeof(struct lpfc_name)); 4461 } 4462 fast_path_evt->vport = vport; 4463 fast_path_evt->work_evt.evt = 4464 LPFC_EVT_FASTPATH_MGMT_EVT; 4465 spin_lock_irqsave(&phba->hbalock, flags); 4466 list_add_tail(&fast_path_evt->work_evt.evt_listp, 4467 &phba->work_list); 4468 spin_unlock_irqrestore(&phba->hbalock, flags); 4469 lpfc_worker_wake_up(phba); 4470 break; 4471 case IOSTAT_LOCAL_REJECT: 4472 case IOSTAT_REMOTE_STOP: 4473 if (lpfc_cmd->result == IOERR_ELXSEC_KEY_UNWRAP_ERROR || 4474 lpfc_cmd->result == 4475 IOERR_ELXSEC_KEY_UNWRAP_COMPARE_ERROR || 4476 lpfc_cmd->result == IOERR_ELXSEC_CRYPTO_ERROR || 4477 lpfc_cmd->result == 4478 IOERR_ELXSEC_CRYPTO_COMPARE_ERROR) { 4479 cmd->result = DID_NO_CONNECT << 16; 4480 break; 4481 } 4482 if (lpfc_cmd->result == IOERR_INVALID_RPI || 4483 lpfc_cmd->result == IOERR_NO_RESOURCES || 4484 lpfc_cmd->result == IOERR_ABORT_REQUESTED || 4485 lpfc_cmd->result == IOERR_SLER_CMD_RCV_FAILURE) { 4486 cmd->result = DID_TRANSPORT_DISRUPTED << 16; 4487 break; 4488 } 4489 if ((lpfc_cmd->result == IOERR_RX_DMA_FAILED || 4490 lpfc_cmd->result == IOERR_TX_DMA_FAILED) && 4491 pIocbOut->iocb.unsli3.sli3_bg.bgstat) { 4492 if (scsi_get_prot_op(cmd) != SCSI_PROT_NORMAL) { 4493 /* 4494 * This is a response for a BG enabled 4495 * cmd. Parse BG error 4496 */ 4497 lpfc_parse_bg_err(phba, lpfc_cmd, 4498 pIocbOut); 4499 break; 4500 } else { 4501 lpfc_printf_vlog(vport, KERN_WARNING, 4502 LOG_BG, 4503 "9031 non-zero BGSTAT " 4504 "on unprotected cmd\n"); 4505 } 4506 } 4507 if ((lpfc_cmd->status == IOSTAT_REMOTE_STOP) 4508 && (phba->sli_rev == LPFC_SLI_REV4) 4509 && pnode) { 4510 /* This IO was aborted by the target, we don't 4511 * know the rxid and because we did not send the 4512 * ABTS we cannot generate and RRQ. 4513 */ 4514 lpfc_set_rrq_active(phba, pnode, 4515 lpfc_cmd->cur_iocbq.sli4_lxritag, 4516 0, 0); 4517 } 4518 fallthrough; 4519 default: 4520 cmd->result = DID_ERROR << 16; 4521 break; 4522 } 4523 4524 if (!pnode || (pnode->nlp_state != NLP_STE_MAPPED_NODE)) 4525 cmd->result = DID_TRANSPORT_DISRUPTED << 16 | 4526 SAM_STAT_BUSY; 4527 } else 4528 cmd->result = DID_OK << 16; 4529 4530 if (cmd->result || lpfc_cmd->fcp_rsp->rspSnsLen) { 4531 uint32_t *lp = (uint32_t *)cmd->sense_buffer; 4532 4533 lpfc_printf_vlog(vport, KERN_INFO, LOG_FCP, 4534 "0710 Iodone <%d/%llu> cmd x%px, error " 4535 "x%x SNS x%x x%x Data: x%x x%x\n", 4536 cmd->device->id, cmd->device->lun, cmd, 4537 cmd->result, *lp, *(lp + 3), cmd->retries, 4538 scsi_get_resid(cmd)); 4539 } 4540 4541 if (vport->cfg_max_scsicmpl_time && 4542 time_after(jiffies, lpfc_cmd->start_time + 4543 msecs_to_jiffies(vport->cfg_max_scsicmpl_time))) { 4544 spin_lock_irqsave(shost->host_lock, flags); 4545 if (pnode) { 4546 if (pnode->cmd_qdepth > 4547 atomic_read(&pnode->cmd_pending) && 4548 (atomic_read(&pnode->cmd_pending) > 4549 LPFC_MIN_TGT_QDEPTH) && 4550 ((cmd->cmnd[0] == READ_10) || 4551 (cmd->cmnd[0] == WRITE_10))) 4552 pnode->cmd_qdepth = 4553 atomic_read(&pnode->cmd_pending); 4554 4555 pnode->last_change_time = jiffies; 4556 } 4557 spin_unlock_irqrestore(shost->host_lock, flags); 4558 } 4559 lpfc_scsi_unprep_dma_buf(phba, lpfc_cmd); 4560 4561 lpfc_cmd->pCmd = NULL; 4562 spin_unlock(&lpfc_cmd->buf_lock); 4563 4564#ifdef CONFIG_SCSI_LPFC_DEBUG_FS 4565 if (lpfc_cmd->ts_cmd_start) { 4566 lpfc_cmd->ts_isr_cmpl = pIocbIn->isr_timestamp; 4567 lpfc_cmd->ts_data_io = ktime_get_ns(); 4568 phba->ktime_last_cmd = lpfc_cmd->ts_data_io; 4569 lpfc_io_ktime(phba, lpfc_cmd); 4570 } 4571#endif 4572 4573 /* The sdev is not guaranteed to be valid post scsi_done upcall. */ 4574 scsi_done(cmd); 4575 4576 /* 4577 * If there is an abort thread waiting for command completion 4578 * wake up the thread. 4579 */ 4580 spin_lock(&lpfc_cmd->buf_lock); 4581 lpfc_cmd->cur_iocbq.cmd_flag &= ~LPFC_DRIVER_ABORTED; 4582 if (lpfc_cmd->waitq) 4583 wake_up(lpfc_cmd->waitq); 4584 spin_unlock(&lpfc_cmd->buf_lock); 4585 4586 lpfc_release_scsi_buf(phba, lpfc_cmd); 4587} 4588 4589/** 4590 * lpfc_scsi_prep_cmnd_buf_s3 - SLI-3 IOCB init for the IO 4591 * @vport: Pointer to vport object. 4592 * @lpfc_cmd: The scsi buffer which is going to be prep'ed. 4593 * @tmo: timeout value for the IO 4594 * 4595 * Based on the data-direction of the command, initialize IOCB 4596 * in the I/O buffer. Fill in the IOCB fields which are independent 4597 * of the scsi buffer 4598 * 4599 * RETURNS 0 - SUCCESS, 4600 **/ 4601static int lpfc_scsi_prep_cmnd_buf_s3(struct lpfc_vport *vport, 4602 struct lpfc_io_buf *lpfc_cmd, 4603 uint8_t tmo) 4604{ 4605 IOCB_t *iocb_cmd = &lpfc_cmd->cur_iocbq.iocb; 4606 struct lpfc_iocbq *piocbq = &lpfc_cmd->cur_iocbq; 4607 struct scsi_cmnd *scsi_cmnd = lpfc_cmd->pCmd; 4608 struct fcp_cmnd *fcp_cmnd = lpfc_cmd->fcp_cmnd; 4609 struct lpfc_nodelist *pnode = lpfc_cmd->ndlp; 4610 int datadir = scsi_cmnd->sc_data_direction; 4611 u32 fcpdl; 4612 4613 piocbq->iocb.un.fcpi.fcpi_XRdy = 0; 4614 4615 /* 4616 * There are three possibilities here - use scatter-gather segment, use 4617 * the single mapping, or neither. Start the lpfc command prep by 4618 * bumping the bpl beyond the fcp_cmnd and fcp_rsp regions to the first 4619 * data bde entry. 4620 */ 4621 if (scsi_sg_count(scsi_cmnd)) { 4622 if (datadir == DMA_TO_DEVICE) { 4623 iocb_cmd->ulpCommand = CMD_FCP_IWRITE64_CR; 4624 iocb_cmd->ulpPU = PARM_READ_CHECK; 4625 if (vport->cfg_first_burst_size && 4626 (pnode->nlp_flag & NLP_FIRSTBURST)) { 4627 u32 xrdy_len; 4628 4629 fcpdl = scsi_bufflen(scsi_cmnd); 4630 xrdy_len = min(fcpdl, 4631 vport->cfg_first_burst_size); 4632 piocbq->iocb.un.fcpi.fcpi_XRdy = xrdy_len; 4633 } 4634 fcp_cmnd->fcpCntl3 = WRITE_DATA; 4635 } else { 4636 iocb_cmd->ulpCommand = CMD_FCP_IREAD64_CR; 4637 iocb_cmd->ulpPU = PARM_READ_CHECK; 4638 fcp_cmnd->fcpCntl3 = READ_DATA; 4639 } 4640 } else { 4641 iocb_cmd->ulpCommand = CMD_FCP_ICMND64_CR; 4642 iocb_cmd->un.fcpi.fcpi_parm = 0; 4643 iocb_cmd->ulpPU = 0; 4644 fcp_cmnd->fcpCntl3 = 0; 4645 } 4646 4647 /* 4648 * Finish initializing those IOCB fields that are independent 4649 * of the scsi_cmnd request_buffer 4650 */ 4651 piocbq->iocb.ulpContext = pnode->nlp_rpi; 4652 if (pnode->nlp_fcp_info & NLP_FCP_2_DEVICE) 4653 piocbq->iocb.ulpFCP2Rcvy = 1; 4654 else 4655 piocbq->iocb.ulpFCP2Rcvy = 0; 4656 4657 piocbq->iocb.ulpClass = (pnode->nlp_fcp_info & 0x0f); 4658 piocbq->io_buf = lpfc_cmd; 4659 if (!piocbq->cmd_cmpl) 4660 piocbq->cmd_cmpl = lpfc_scsi_cmd_iocb_cmpl; 4661 piocbq->iocb.ulpTimeout = tmo; 4662 piocbq->vport = vport; 4663 return 0; 4664} 4665 4666/** 4667 * lpfc_scsi_prep_cmnd_buf_s4 - SLI-4 WQE init for the IO 4668 * @vport: Pointer to vport object. 4669 * @lpfc_cmd: The scsi buffer which is going to be prep'ed. 4670 * @tmo: timeout value for the IO 4671 * 4672 * Based on the data-direction of the command copy WQE template 4673 * to I/O buffer WQE. Fill in the WQE fields which are independent 4674 * of the scsi buffer 4675 * 4676 * RETURNS 0 - SUCCESS, 4677 **/ 4678static int lpfc_scsi_prep_cmnd_buf_s4(struct lpfc_vport *vport, 4679 struct lpfc_io_buf *lpfc_cmd, 4680 uint8_t tmo) 4681{ 4682 struct lpfc_hba *phba = vport->phba; 4683 struct scsi_cmnd *scsi_cmnd = lpfc_cmd->pCmd; 4684 struct fcp_cmnd *fcp_cmnd = lpfc_cmd->fcp_cmnd; 4685 struct lpfc_sli4_hdw_queue *hdwq = NULL; 4686 struct lpfc_iocbq *pwqeq = &lpfc_cmd->cur_iocbq; 4687 struct lpfc_nodelist *pnode = lpfc_cmd->ndlp; 4688 union lpfc_wqe128 *wqe = &pwqeq->wqe; 4689 u16 idx = lpfc_cmd->hdwq_no; 4690 int datadir = scsi_cmnd->sc_data_direction; 4691 4692 hdwq = &phba->sli4_hba.hdwq[idx]; 4693 4694 /* Initialize 64 bytes only */ 4695 memset(wqe, 0, sizeof(union lpfc_wqe128)); 4696 4697 /* 4698 * There are three possibilities here - use scatter-gather segment, use 4699 * the single mapping, or neither. 4700 */ 4701 if (scsi_sg_count(scsi_cmnd)) { 4702 if (datadir == DMA_TO_DEVICE) { 4703 /* From the iwrite template, initialize words 7 - 11 */ 4704 memcpy(&wqe->words[7], 4705 &lpfc_iwrite_cmd_template.words[7], 4706 sizeof(uint32_t) * 5); 4707 4708 fcp_cmnd->fcpCntl3 = WRITE_DATA; 4709 if (hdwq) 4710 hdwq->scsi_cstat.output_requests++; 4711 } else { 4712 /* From the iread template, initialize words 7 - 11 */ 4713 memcpy(&wqe->words[7], 4714 &lpfc_iread_cmd_template.words[7], 4715 sizeof(uint32_t) * 5); 4716 4717 /* Word 7 */ 4718 bf_set(wqe_tmo, &wqe->fcp_iread.wqe_com, tmo); 4719 4720 fcp_cmnd->fcpCntl3 = READ_DATA; 4721 if (hdwq) 4722 hdwq->scsi_cstat.input_requests++; 4723 4724 /* For a CMF Managed port, iod must be zero'ed */ 4725 if (phba->cmf_active_mode == LPFC_CFG_MANAGED) 4726 bf_set(wqe_iod, &wqe->fcp_iread.wqe_com, 4727 LPFC_WQE_IOD_NONE); 4728 } 4729 } else { 4730 /* From the icmnd template, initialize words 4 - 11 */ 4731 memcpy(&wqe->words[4], &lpfc_icmnd_cmd_template.words[4], 4732 sizeof(uint32_t) * 8); 4733 4734 /* Word 7 */ 4735 bf_set(wqe_tmo, &wqe->fcp_icmd.wqe_com, tmo); 4736 4737 fcp_cmnd->fcpCntl3 = 0; 4738 if (hdwq) 4739 hdwq->scsi_cstat.control_requests++; 4740 } 4741 4742 /* 4743 * Finish initializing those WQE fields that are independent 4744 * of the request_buffer 4745 */ 4746 4747 /* Word 3 */ 4748 bf_set(payload_offset_len, &wqe->fcp_icmd, 4749 sizeof(struct fcp_cmnd) + sizeof(struct fcp_rsp)); 4750 4751 /* Word 6 */ 4752 bf_set(wqe_ctxt_tag, &wqe->generic.wqe_com, 4753 phba->sli4_hba.rpi_ids[pnode->nlp_rpi]); 4754 bf_set(wqe_xri_tag, &wqe->generic.wqe_com, pwqeq->sli4_xritag); 4755 4756 /* Word 7*/ 4757 if (pnode->nlp_fcp_info & NLP_FCP_2_DEVICE) 4758 bf_set(wqe_erp, &wqe->generic.wqe_com, 1); 4759 4760 bf_set(wqe_class, &wqe->generic.wqe_com, 4761 (pnode->nlp_fcp_info & 0x0f)); 4762 4763 /* Word 8 */ 4764 wqe->generic.wqe_com.abort_tag = pwqeq->iotag; 4765 4766 /* Word 9 */ 4767 bf_set(wqe_reqtag, &wqe->generic.wqe_com, pwqeq->iotag); 4768 4769 pwqeq->vport = vport; 4770 pwqeq->io_buf = lpfc_cmd; 4771 pwqeq->hba_wqidx = lpfc_cmd->hdwq_no; 4772 pwqeq->cmd_cmpl = lpfc_fcp_io_cmd_wqe_cmpl; 4773 4774 return 0; 4775} 4776 4777/** 4778 * lpfc_scsi_prep_cmnd - Wrapper func for convert scsi cmnd to FCP info unit 4779 * @vport: The virtual port for which this call is being executed. 4780 * @lpfc_cmd: The scsi command which needs to send. 4781 * @pnode: Pointer to lpfc_nodelist. 4782 * 4783 * This routine initializes fcp_cmnd and iocb data structure from scsi command 4784 * to transfer for device with SLI3 interface spec. 4785 **/ 4786static int 4787lpfc_scsi_prep_cmnd(struct lpfc_vport *vport, struct lpfc_io_buf *lpfc_cmd, 4788 struct lpfc_nodelist *pnode) 4789{ 4790 struct scsi_cmnd *scsi_cmnd = lpfc_cmd->pCmd; 4791 struct fcp_cmnd *fcp_cmnd = lpfc_cmd->fcp_cmnd; 4792 u8 *ptr; 4793 4794 if (!pnode) 4795 return 0; 4796 4797 lpfc_cmd->fcp_rsp->rspSnsLen = 0; 4798 /* clear task management bits */ 4799 lpfc_cmd->fcp_cmnd->fcpCntl2 = 0; 4800 4801 int_to_scsilun(lpfc_cmd->pCmd->device->lun, 4802 &lpfc_cmd->fcp_cmnd->fcp_lun); 4803 4804 ptr = &fcp_cmnd->fcpCdb[0]; 4805 memcpy(ptr, scsi_cmnd->cmnd, scsi_cmnd->cmd_len); 4806 if (scsi_cmnd->cmd_len < LPFC_FCP_CDB_LEN) { 4807 ptr += scsi_cmnd->cmd_len; 4808 memset(ptr, 0, (LPFC_FCP_CDB_LEN - scsi_cmnd->cmd_len)); 4809 } 4810 4811 fcp_cmnd->fcpCntl1 = SIMPLE_Q; 4812 4813 lpfc_scsi_prep_cmnd_buf(vport, lpfc_cmd, lpfc_cmd->timeout); 4814 4815 return 0; 4816} 4817 4818/** 4819 * lpfc_scsi_prep_task_mgmt_cmd_s3 - Convert SLI3 scsi TM cmd to FCP info unit 4820 * @vport: The virtual port for which this call is being executed. 4821 * @lpfc_cmd: Pointer to lpfc_io_buf data structure. 4822 * @lun: Logical unit number. 4823 * @task_mgmt_cmd: SCSI task management command. 4824 * 4825 * This routine creates FCP information unit corresponding to @task_mgmt_cmd 4826 * for device with SLI-3 interface spec. 4827 * 4828 * Return codes: 4829 * 0 - Error 4830 * 1 - Success 4831 **/ 4832static int 4833lpfc_scsi_prep_task_mgmt_cmd_s3(struct lpfc_vport *vport, 4834 struct lpfc_io_buf *lpfc_cmd, 4835 u64 lun, u8 task_mgmt_cmd) 4836{ 4837 struct lpfc_iocbq *piocbq; 4838 IOCB_t *piocb; 4839 struct fcp_cmnd *fcp_cmnd; 4840 struct lpfc_rport_data *rdata = lpfc_cmd->rdata; 4841 struct lpfc_nodelist *ndlp = rdata->pnode; 4842 4843 if (!ndlp || ndlp->nlp_state != NLP_STE_MAPPED_NODE) 4844 return 0; 4845 4846 piocbq = &(lpfc_cmd->cur_iocbq); 4847 piocbq->vport = vport; 4848 4849 piocb = &piocbq->iocb; 4850 4851 fcp_cmnd = lpfc_cmd->fcp_cmnd; 4852 /* Clear out any old data in the FCP command area */ 4853 memset(fcp_cmnd, 0, sizeof(struct fcp_cmnd)); 4854 int_to_scsilun(lun, &fcp_cmnd->fcp_lun); 4855 fcp_cmnd->fcpCntl2 = task_mgmt_cmd; 4856 if (!(vport->phba->sli3_options & LPFC_SLI3_BG_ENABLED)) 4857 lpfc_fcpcmd_to_iocb(piocb->unsli3.fcp_ext.icd, fcp_cmnd); 4858 piocb->ulpCommand = CMD_FCP_ICMND64_CR; 4859 piocb->ulpContext = ndlp->nlp_rpi; 4860 piocb->ulpFCP2Rcvy = (ndlp->nlp_fcp_info & NLP_FCP_2_DEVICE) ? 1 : 0; 4861 piocb->ulpClass = (ndlp->nlp_fcp_info & 0x0f); 4862 piocb->ulpPU = 0; 4863 piocb->un.fcpi.fcpi_parm = 0; 4864 4865 /* ulpTimeout is only one byte */ 4866 if (lpfc_cmd->timeout > 0xff) { 4867 /* 4868 * Do not timeout the command at the firmware level. 4869 * The driver will provide the timeout mechanism. 4870 */ 4871 piocb->ulpTimeout = 0; 4872 } else 4873 piocb->ulpTimeout = lpfc_cmd->timeout; 4874 4875 return 1; 4876} 4877 4878/** 4879 * lpfc_scsi_prep_task_mgmt_cmd_s4 - Convert SLI4 scsi TM cmd to FCP info unit 4880 * @vport: The virtual port for which this call is being executed. 4881 * @lpfc_cmd: Pointer to lpfc_io_buf data structure. 4882 * @lun: Logical unit number. 4883 * @task_mgmt_cmd: SCSI task management command. 4884 * 4885 * This routine creates FCP information unit corresponding to @task_mgmt_cmd 4886 * for device with SLI-4 interface spec. 4887 * 4888 * Return codes: 4889 * 0 - Error 4890 * 1 - Success 4891 **/ 4892static int 4893lpfc_scsi_prep_task_mgmt_cmd_s4(struct lpfc_vport *vport, 4894 struct lpfc_io_buf *lpfc_cmd, 4895 u64 lun, u8 task_mgmt_cmd) 4896{ 4897 struct lpfc_iocbq *pwqeq = &lpfc_cmd->cur_iocbq; 4898 union lpfc_wqe128 *wqe = &pwqeq->wqe; 4899 struct fcp_cmnd *fcp_cmnd; 4900 struct lpfc_rport_data *rdata = lpfc_cmd->rdata; 4901 struct lpfc_nodelist *ndlp = rdata->pnode; 4902 4903 if (!ndlp || ndlp->nlp_state != NLP_STE_MAPPED_NODE) 4904 return 0; 4905 4906 pwqeq->vport = vport; 4907 /* Initialize 64 bytes only */ 4908 memset(wqe, 0, sizeof(union lpfc_wqe128)); 4909 4910 /* From the icmnd template, initialize words 4 - 11 */ 4911 memcpy(&wqe->words[4], &lpfc_icmnd_cmd_template.words[4], 4912 sizeof(uint32_t) * 8); 4913 4914 fcp_cmnd = lpfc_cmd->fcp_cmnd; 4915 /* Clear out any old data in the FCP command area */ 4916 memset(fcp_cmnd, 0, sizeof(struct fcp_cmnd)); 4917 int_to_scsilun(lun, &fcp_cmnd->fcp_lun); 4918 fcp_cmnd->fcpCntl3 = 0; 4919 fcp_cmnd->fcpCntl2 = task_mgmt_cmd; 4920 4921 bf_set(payload_offset_len, &wqe->fcp_icmd, 4922 sizeof(struct fcp_cmnd) + sizeof(struct fcp_rsp)); 4923 bf_set(cmd_buff_len, &wqe->fcp_icmd, 0); 4924 bf_set(wqe_ctxt_tag, &wqe->generic.wqe_com, /* ulpContext */ 4925 vport->phba->sli4_hba.rpi_ids[ndlp->nlp_rpi]); 4926 bf_set(wqe_erp, &wqe->fcp_icmd.wqe_com, 4927 ((ndlp->nlp_fcp_info & NLP_FCP_2_DEVICE) ? 1 : 0)); 4928 bf_set(wqe_class, &wqe->fcp_icmd.wqe_com, 4929 (ndlp->nlp_fcp_info & 0x0f)); 4930 4931 /* ulpTimeout is only one byte */ 4932 if (lpfc_cmd->timeout > 0xff) { 4933 /* 4934 * Do not timeout the command at the firmware level. 4935 * The driver will provide the timeout mechanism. 4936 */ 4937 bf_set(wqe_tmo, &wqe->fcp_icmd.wqe_com, 0); 4938 } else { 4939 bf_set(wqe_tmo, &wqe->fcp_icmd.wqe_com, lpfc_cmd->timeout); 4940 } 4941 4942 lpfc_prep_embed_io(vport->phba, lpfc_cmd); 4943 bf_set(wqe_xri_tag, &wqe->generic.wqe_com, pwqeq->sli4_xritag); 4944 wqe->generic.wqe_com.abort_tag = pwqeq->iotag; 4945 bf_set(wqe_reqtag, &wqe->generic.wqe_com, pwqeq->iotag); 4946 4947 lpfc_sli4_set_rsp_sgl_last(vport->phba, lpfc_cmd); 4948 4949 return 1; 4950} 4951 4952/** 4953 * lpfc_scsi_api_table_setup - Set up scsi api function jump table 4954 * @phba: The hba struct for which this call is being executed. 4955 * @dev_grp: The HBA PCI-Device group number. 4956 * 4957 * This routine sets up the SCSI interface API function jump table in @phba 4958 * struct. 4959 * Returns: 0 - success, -ENODEV - failure. 4960 **/ 4961int 4962lpfc_scsi_api_table_setup(struct lpfc_hba *phba, uint8_t dev_grp) 4963{ 4964 4965 phba->lpfc_scsi_unprep_dma_buf = lpfc_scsi_unprep_dma_buf; 4966 4967 switch (dev_grp) { 4968 case LPFC_PCI_DEV_LP: 4969 phba->lpfc_scsi_prep_dma_buf = lpfc_scsi_prep_dma_buf_s3; 4970 phba->lpfc_bg_scsi_prep_dma_buf = lpfc_bg_scsi_prep_dma_buf_s3; 4971 phba->lpfc_release_scsi_buf = lpfc_release_scsi_buf_s3; 4972 phba->lpfc_get_scsi_buf = lpfc_get_scsi_buf_s3; 4973 phba->lpfc_scsi_prep_cmnd_buf = lpfc_scsi_prep_cmnd_buf_s3; 4974 phba->lpfc_scsi_prep_task_mgmt_cmd = 4975 lpfc_scsi_prep_task_mgmt_cmd_s3; 4976 break; 4977 case LPFC_PCI_DEV_OC: 4978 phba->lpfc_scsi_prep_dma_buf = lpfc_scsi_prep_dma_buf_s4; 4979 phba->lpfc_bg_scsi_prep_dma_buf = lpfc_bg_scsi_prep_dma_buf_s4; 4980 phba->lpfc_release_scsi_buf = lpfc_release_scsi_buf_s4; 4981 phba->lpfc_get_scsi_buf = lpfc_get_scsi_buf_s4; 4982 phba->lpfc_scsi_prep_cmnd_buf = lpfc_scsi_prep_cmnd_buf_s4; 4983 phba->lpfc_scsi_prep_task_mgmt_cmd = 4984 lpfc_scsi_prep_task_mgmt_cmd_s4; 4985 break; 4986 default: 4987 lpfc_printf_log(phba, KERN_ERR, LOG_INIT, 4988 "1418 Invalid HBA PCI-device group: 0x%x\n", 4989 dev_grp); 4990 return -ENODEV; 4991 } 4992 phba->lpfc_rampdown_queue_depth = lpfc_rampdown_queue_depth; 4993 return 0; 4994} 4995 4996/** 4997 * lpfc_tskmgmt_def_cmpl - IOCB completion routine for task management command 4998 * @phba: The Hba for which this call is being executed. 4999 * @cmdiocbq: Pointer to lpfc_iocbq data structure. 5000 * @rspiocbq: Pointer to lpfc_iocbq data structure. 5001 * 5002 * This routine is IOCB completion routine for device reset and target reset 5003 * routine. This routine release scsi buffer associated with lpfc_cmd. 5004 **/ 5005static void 5006lpfc_tskmgmt_def_cmpl(struct lpfc_hba *phba, 5007 struct lpfc_iocbq *cmdiocbq, 5008 struct lpfc_iocbq *rspiocbq) 5009{ 5010 struct lpfc_io_buf *lpfc_cmd = cmdiocbq->io_buf; 5011 if (lpfc_cmd) 5012 lpfc_release_scsi_buf(phba, lpfc_cmd); 5013 return; 5014} 5015 5016/** 5017 * lpfc_check_pci_resettable - Walks list of devices on pci_dev's bus to check 5018 * if issuing a pci_bus_reset is possibly unsafe 5019 * @phba: lpfc_hba pointer. 5020 * 5021 * Description: 5022 * Walks the bus_list to ensure only PCI devices with Emulex 5023 * vendor id, device ids that support hot reset, and only one occurrence 5024 * of function 0. 5025 * 5026 * Returns: 5027 * -EBADSLT, detected invalid device 5028 * 0, successful 5029 */ 5030int 5031lpfc_check_pci_resettable(struct lpfc_hba *phba) 5032{ 5033 const struct pci_dev *pdev = phba->pcidev; 5034 struct pci_dev *ptr = NULL; 5035 u8 counter = 0; 5036 5037 /* Walk the list of devices on the pci_dev's bus */ 5038 list_for_each_entry(ptr, &pdev->bus->devices, bus_list) { 5039 /* Check for Emulex Vendor ID */ 5040 if (ptr->vendor != PCI_VENDOR_ID_EMULEX) { 5041 lpfc_printf_log(phba, KERN_INFO, LOG_INIT, 5042 "8346 Non-Emulex vendor found: " 5043 "0x%04x\n", ptr->vendor); 5044 return -EBADSLT; 5045 } 5046 5047 /* Check for valid Emulex Device ID */ 5048 if (phba->sli_rev != LPFC_SLI_REV4 || 5049 phba->hba_flag & HBA_FCOE_MODE) { 5050 lpfc_printf_log(phba, KERN_INFO, LOG_INIT, 5051 "8347 Incapable PCI reset device: " 5052 "0x%04x\n", ptr->device); 5053 return -EBADSLT; 5054 } 5055 5056 /* Check for only one function 0 ID to ensure only one HBA on 5057 * secondary bus 5058 */ 5059 if (ptr->devfn == 0) { 5060 if (++counter > 1) { 5061 lpfc_printf_log(phba, KERN_INFO, LOG_INIT, 5062 "8348 More than one device on " 5063 "secondary bus found\n"); 5064 return -EBADSLT; 5065 } 5066 } 5067 } 5068 5069 return 0; 5070} 5071 5072/** 5073 * lpfc_info - Info entry point of scsi_host_template data structure 5074 * @host: The scsi host for which this call is being executed. 5075 * 5076 * This routine provides module information about hba. 5077 * 5078 * Reutrn code: 5079 * Pointer to char - Success. 5080 **/ 5081const char * 5082lpfc_info(struct Scsi_Host *host) 5083{ 5084 struct lpfc_vport *vport = (struct lpfc_vport *) host->hostdata; 5085 struct lpfc_hba *phba = vport->phba; 5086 int link_speed = 0; 5087 static char lpfcinfobuf[384]; 5088 char tmp[384] = {0}; 5089 5090 memset(lpfcinfobuf, 0, sizeof(lpfcinfobuf)); 5091 if (phba && phba->pcidev){ 5092 /* Model Description */ 5093 scnprintf(tmp, sizeof(tmp), phba->ModelDesc); 5094 if (strlcat(lpfcinfobuf, tmp, sizeof(lpfcinfobuf)) >= 5095 sizeof(lpfcinfobuf)) 5096 goto buffer_done; 5097 5098 /* PCI Info */ 5099 scnprintf(tmp, sizeof(tmp), 5100 " on PCI bus %02x device %02x irq %d", 5101 phba->pcidev->bus->number, phba->pcidev->devfn, 5102 phba->pcidev->irq); 5103 if (strlcat(lpfcinfobuf, tmp, sizeof(lpfcinfobuf)) >= 5104 sizeof(lpfcinfobuf)) 5105 goto buffer_done; 5106 5107 /* Port Number */ 5108 if (phba->Port[0]) { 5109 scnprintf(tmp, sizeof(tmp), " port %s", phba->Port); 5110 if (strlcat(lpfcinfobuf, tmp, sizeof(lpfcinfobuf)) >= 5111 sizeof(lpfcinfobuf)) 5112 goto buffer_done; 5113 } 5114 5115 /* Link Speed */ 5116 link_speed = lpfc_sli_port_speed_get(phba); 5117 if (link_speed != 0) { 5118 scnprintf(tmp, sizeof(tmp), 5119 " Logical Link Speed: %d Mbps", link_speed); 5120 if (strlcat(lpfcinfobuf, tmp, sizeof(lpfcinfobuf)) >= 5121 sizeof(lpfcinfobuf)) 5122 goto buffer_done; 5123 } 5124 5125 /* PCI resettable */ 5126 if (!lpfc_check_pci_resettable(phba)) { 5127 scnprintf(tmp, sizeof(tmp), " PCI resettable"); 5128 strlcat(lpfcinfobuf, tmp, sizeof(lpfcinfobuf)); 5129 } 5130 } 5131 5132buffer_done: 5133 return lpfcinfobuf; 5134} 5135 5136/** 5137 * lpfc_poll_rearm_timer - Routine to modify fcp_poll timer of hba 5138 * @phba: The Hba for which this call is being executed. 5139 * 5140 * This routine modifies fcp_poll_timer field of @phba by cfg_poll_tmo. 5141 * The default value of cfg_poll_tmo is 10 milliseconds. 5142 **/ 5143static __inline__ void lpfc_poll_rearm_timer(struct lpfc_hba * phba) 5144{ 5145 unsigned long poll_tmo_expires = 5146 (jiffies + msecs_to_jiffies(phba->cfg_poll_tmo)); 5147 5148 if (!list_empty(&phba->sli.sli3_ring[LPFC_FCP_RING].txcmplq)) 5149 mod_timer(&phba->fcp_poll_timer, 5150 poll_tmo_expires); 5151} 5152 5153/** 5154 * lpfc_poll_start_timer - Routine to start fcp_poll_timer of HBA 5155 * @phba: The Hba for which this call is being executed. 5156 * 5157 * This routine starts the fcp_poll_timer of @phba. 5158 **/ 5159void lpfc_poll_start_timer(struct lpfc_hba * phba) 5160{ 5161 lpfc_poll_rearm_timer(phba); 5162} 5163 5164/** 5165 * lpfc_poll_timeout - Restart polling timer 5166 * @t: Timer construct where lpfc_hba data structure pointer is obtained. 5167 * 5168 * This routine restarts fcp_poll timer, when FCP ring polling is enable 5169 * and FCP Ring interrupt is disable. 5170 **/ 5171void lpfc_poll_timeout(struct timer_list *t) 5172{ 5173 struct lpfc_hba *phba = from_timer(phba, t, fcp_poll_timer); 5174 5175 if (phba->cfg_poll & ENABLE_FCP_RING_POLLING) { 5176 lpfc_sli_handle_fast_ring_event(phba, 5177 &phba->sli.sli3_ring[LPFC_FCP_RING], HA_R0RE_REQ); 5178 5179 if (phba->cfg_poll & DISABLE_FCP_RING_INT) 5180 lpfc_poll_rearm_timer(phba); 5181 } 5182} 5183 5184/* 5185 * lpfc_is_command_vm_io - get the UUID from blk cgroup 5186 * @cmd: Pointer to scsi_cmnd data structure 5187 * Returns UUID if present, otherwise NULL 5188 */ 5189static char *lpfc_is_command_vm_io(struct scsi_cmnd *cmd) 5190{ 5191 struct bio *bio = scsi_cmd_to_rq(cmd)->bio; 5192 5193 if (!IS_ENABLED(CONFIG_BLK_CGROUP_FC_APPID) || !bio) 5194 return NULL; 5195 return blkcg_get_fc_appid(bio); 5196} 5197 5198/** 5199 * lpfc_queuecommand - scsi_host_template queuecommand entry point 5200 * @shost: kernel scsi host pointer. 5201 * @cmnd: Pointer to scsi_cmnd data structure. 5202 * 5203 * Driver registers this routine to scsi midlayer to submit a @cmd to process. 5204 * This routine prepares an IOCB from scsi command and provides to firmware. 5205 * The @done callback is invoked after driver finished processing the command. 5206 * 5207 * Return value : 5208 * 0 - Success 5209 * SCSI_MLQUEUE_HOST_BUSY - Block all devices served by this host temporarily. 5210 **/ 5211static int 5212lpfc_queuecommand(struct Scsi_Host *shost, struct scsi_cmnd *cmnd) 5213{ 5214 struct lpfc_vport *vport = (struct lpfc_vport *) shost->hostdata; 5215 struct lpfc_hba *phba = vport->phba; 5216 struct lpfc_iocbq *cur_iocbq = NULL; 5217 struct lpfc_rport_data *rdata; 5218 struct lpfc_nodelist *ndlp; 5219 struct lpfc_io_buf *lpfc_cmd; 5220 struct fc_rport *rport = starget_to_rport(scsi_target(cmnd->device)); 5221 int err, idx; 5222 u8 *uuid = NULL; 5223 uint64_t start; 5224 5225 start = ktime_get_ns(); 5226 rdata = lpfc_rport_data_from_scsi_device(cmnd->device); 5227 5228 /* sanity check on references */ 5229 if (unlikely(!rdata) || unlikely(!rport)) 5230 goto out_fail_command; 5231 5232 err = fc_remote_port_chkready(rport); 5233 if (err) { 5234 cmnd->result = err; 5235 goto out_fail_command; 5236 } 5237 ndlp = rdata->pnode; 5238 5239 if ((scsi_get_prot_op(cmnd) != SCSI_PROT_NORMAL) && 5240 (!(phba->sli3_options & LPFC_SLI3_BG_ENABLED))) { 5241 5242 lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT, 5243 "9058 BLKGRD: ERROR: rcvd protected cmd:%02x" 5244 " op:%02x str=%s without registering for" 5245 " BlockGuard - Rejecting command\n", 5246 cmnd->cmnd[0], scsi_get_prot_op(cmnd), 5247 dif_op_str[scsi_get_prot_op(cmnd)]); 5248 goto out_fail_command; 5249 } 5250 5251 /* 5252 * Catch race where our node has transitioned, but the 5253 * transport is still transitioning. 5254 */ 5255 if (!ndlp) 5256 goto out_tgt_busy1; 5257 5258 /* Check if IO qualifies for CMF */ 5259 if (phba->cmf_active_mode != LPFC_CFG_OFF && 5260 cmnd->sc_data_direction == DMA_FROM_DEVICE && 5261 (scsi_sg_count(cmnd))) { 5262 /* Latency start time saved in rx_cmd_start later in routine */ 5263 err = lpfc_update_cmf_cmd(phba, scsi_bufflen(cmnd)); 5264 if (err) 5265 goto out_tgt_busy1; 5266 } 5267 5268 if (lpfc_ndlp_check_qdepth(phba, ndlp)) { 5269 if (atomic_read(&ndlp->cmd_pending) >= ndlp->cmd_qdepth) { 5270 lpfc_printf_vlog(vport, KERN_INFO, LOG_FCP_ERROR, 5271 "3377 Target Queue Full, scsi Id:%d " 5272 "Qdepth:%d Pending command:%d" 5273 " WWNN:%02x:%02x:%02x:%02x:" 5274 "%02x:%02x:%02x:%02x, " 5275 " WWPN:%02x:%02x:%02x:%02x:" 5276 "%02x:%02x:%02x:%02x", 5277 ndlp->nlp_sid, ndlp->cmd_qdepth, 5278 atomic_read(&ndlp->cmd_pending), 5279 ndlp->nlp_nodename.u.wwn[0], 5280 ndlp->nlp_nodename.u.wwn[1], 5281 ndlp->nlp_nodename.u.wwn[2], 5282 ndlp->nlp_nodename.u.wwn[3], 5283 ndlp->nlp_nodename.u.wwn[4], 5284 ndlp->nlp_nodename.u.wwn[5], 5285 ndlp->nlp_nodename.u.wwn[6], 5286 ndlp->nlp_nodename.u.wwn[7], 5287 ndlp->nlp_portname.u.wwn[0], 5288 ndlp->nlp_portname.u.wwn[1], 5289 ndlp->nlp_portname.u.wwn[2], 5290 ndlp->nlp_portname.u.wwn[3], 5291 ndlp->nlp_portname.u.wwn[4], 5292 ndlp->nlp_portname.u.wwn[5], 5293 ndlp->nlp_portname.u.wwn[6], 5294 ndlp->nlp_portname.u.wwn[7]); 5295 goto out_tgt_busy2; 5296 } 5297 } 5298 5299 lpfc_cmd = lpfc_get_scsi_buf(phba, ndlp, cmnd); 5300 if (lpfc_cmd == NULL) { 5301 lpfc_rampdown_queue_depth(phba); 5302 5303 lpfc_printf_vlog(vport, KERN_INFO, LOG_FCP_ERROR, 5304 "0707 driver's buffer pool is empty, " 5305 "IO busied\n"); 5306 goto out_host_busy; 5307 } 5308 lpfc_cmd->rx_cmd_start = start; 5309 5310 cur_iocbq = &lpfc_cmd->cur_iocbq; 5311 /* 5312 * Store the midlayer's command structure for the completion phase 5313 * and complete the command initialization. 5314 */ 5315 lpfc_cmd->pCmd = cmnd; 5316 lpfc_cmd->rdata = rdata; 5317 lpfc_cmd->ndlp = ndlp; 5318 cur_iocbq->cmd_cmpl = NULL; 5319 cmnd->host_scribble = (unsigned char *)lpfc_cmd; 5320 5321 err = lpfc_scsi_prep_cmnd(vport, lpfc_cmd, ndlp); 5322 if (err) 5323 goto out_host_busy_release_buf; 5324 5325 if (scsi_get_prot_op(cmnd) != SCSI_PROT_NORMAL) { 5326 if (vport->phba->cfg_enable_bg) { 5327 lpfc_printf_vlog(vport, 5328 KERN_INFO, LOG_SCSI_CMD, 5329 "9033 BLKGRD: rcvd %s cmd:x%x " 5330 "reftag x%x cnt %u pt %x\n", 5331 dif_op_str[scsi_get_prot_op(cmnd)], 5332 cmnd->cmnd[0], 5333 scsi_prot_ref_tag(cmnd), 5334 scsi_logical_block_count(cmnd), 5335 (cmnd->cmnd[1]>>5)); 5336 } 5337 err = lpfc_bg_scsi_prep_dma_buf(phba, lpfc_cmd); 5338 } else { 5339 if (vport->phba->cfg_enable_bg) { 5340 lpfc_printf_vlog(vport, 5341 KERN_INFO, LOG_SCSI_CMD, 5342 "9038 BLKGRD: rcvd PROT_NORMAL cmd: " 5343 "x%x reftag x%x cnt %u pt %x\n", 5344 cmnd->cmnd[0], 5345 scsi_prot_ref_tag(cmnd), 5346 scsi_logical_block_count(cmnd), 5347 (cmnd->cmnd[1]>>5)); 5348 } 5349 err = lpfc_scsi_prep_dma_buf(phba, lpfc_cmd); 5350 } 5351 5352 if (unlikely(err)) { 5353 if (err == 2) { 5354 cmnd->result = DID_ERROR << 16; 5355 goto out_fail_command_release_buf; 5356 } 5357 goto out_host_busy_free_buf; 5358 } 5359 5360 /* check the necessary and sufficient condition to support VMID */ 5361 if (lpfc_is_vmid_enabled(phba) && 5362 (ndlp->vmid_support || 5363 phba->pport->vmid_priority_tagging == 5364 LPFC_VMID_PRIO_TAG_ALL_TARGETS)) { 5365 /* is the I/O generated by a VM, get the associated virtual */ 5366 /* entity id */ 5367 uuid = lpfc_is_command_vm_io(cmnd); 5368 5369 if (uuid) { 5370 err = lpfc_vmid_get_appid(vport, uuid, 5371 cmnd->sc_data_direction, 5372 (union lpfc_vmid_io_tag *) 5373 &cur_iocbq->vmid_tag); 5374 if (!err) 5375 cur_iocbq->cmd_flag |= LPFC_IO_VMID; 5376 } 5377 } 5378 5379#ifdef CONFIG_SCSI_LPFC_DEBUG_FS 5380 if (unlikely(phba->hdwqstat_on & LPFC_CHECK_SCSI_IO)) 5381 this_cpu_inc(phba->sli4_hba.c_stat->xmt_io); 5382#endif 5383 /* Issue I/O to adapter */ 5384 err = lpfc_sli_issue_fcp_io(phba, LPFC_FCP_RING, cur_iocbq, 5385 SLI_IOCB_RET_IOCB); 5386#ifdef CONFIG_SCSI_LPFC_DEBUG_FS 5387 if (start) { 5388 lpfc_cmd->ts_cmd_start = start; 5389 lpfc_cmd->ts_last_cmd = phba->ktime_last_cmd; 5390 lpfc_cmd->ts_cmd_wqput = ktime_get_ns(); 5391 } else { 5392 lpfc_cmd->ts_cmd_start = 0; 5393 } 5394#endif 5395 if (err) { 5396 lpfc_printf_vlog(vport, KERN_INFO, LOG_FCP, 5397 "3376 FCP could not issue iocb err %x " 5398 "FCP cmd x%x <%d/%llu> " 5399 "sid: x%x did: x%x oxid: x%x " 5400 "Data: x%x x%x x%x x%x\n", 5401 err, cmnd->cmnd[0], 5402 cmnd->device ? cmnd->device->id : 0xffff, 5403 cmnd->device ? cmnd->device->lun : (u64)-1, 5404 vport->fc_myDID, ndlp->nlp_DID, 5405 phba->sli_rev == LPFC_SLI_REV4 ? 5406 cur_iocbq->sli4_xritag : 0xffff, 5407 phba->sli_rev == LPFC_SLI_REV4 ? 5408 phba->sli4_hba.rpi_ids[ndlp->nlp_rpi] : 5409 cur_iocbq->iocb.ulpContext, 5410 cur_iocbq->iotag, 5411 phba->sli_rev == LPFC_SLI_REV4 ? 5412 bf_get(wqe_tmo, 5413 &cur_iocbq->wqe.generic.wqe_com) : 5414 cur_iocbq->iocb.ulpTimeout, 5415 (uint32_t)(scsi_cmd_to_rq(cmnd)->timeout / 1000)); 5416 5417 goto out_host_busy_free_buf; 5418 } 5419 5420 if (phba->cfg_poll & ENABLE_FCP_RING_POLLING) { 5421 lpfc_sli_handle_fast_ring_event(phba, 5422 &phba->sli.sli3_ring[LPFC_FCP_RING], HA_R0RE_REQ); 5423 5424 if (phba->cfg_poll & DISABLE_FCP_RING_INT) 5425 lpfc_poll_rearm_timer(phba); 5426 } 5427 5428 if (phba->cfg_xri_rebalancing) 5429 lpfc_keep_pvt_pool_above_lowwm(phba, lpfc_cmd->hdwq_no); 5430 5431 return 0; 5432 5433 out_host_busy_free_buf: 5434 idx = lpfc_cmd->hdwq_no; 5435 lpfc_scsi_unprep_dma_buf(phba, lpfc_cmd); 5436 if (phba->sli4_hba.hdwq) { 5437 switch (lpfc_cmd->fcp_cmnd->fcpCntl3) { 5438 case WRITE_DATA: 5439 phba->sli4_hba.hdwq[idx].scsi_cstat.output_requests--; 5440 break; 5441 case READ_DATA: 5442 phba->sli4_hba.hdwq[idx].scsi_cstat.input_requests--; 5443 break; 5444 default: 5445 phba->sli4_hba.hdwq[idx].scsi_cstat.control_requests--; 5446 } 5447 } 5448 out_host_busy_release_buf: 5449 lpfc_release_scsi_buf(phba, lpfc_cmd); 5450 out_host_busy: 5451 lpfc_update_cmf_cmpl(phba, LPFC_CGN_NOT_SENT, scsi_bufflen(cmnd), 5452 shost); 5453 return SCSI_MLQUEUE_HOST_BUSY; 5454 5455 out_tgt_busy2: 5456 lpfc_update_cmf_cmpl(phba, LPFC_CGN_NOT_SENT, scsi_bufflen(cmnd), 5457 shost); 5458 out_tgt_busy1: 5459 return SCSI_MLQUEUE_TARGET_BUSY; 5460 5461 out_fail_command_release_buf: 5462 lpfc_release_scsi_buf(phba, lpfc_cmd); 5463 lpfc_update_cmf_cmpl(phba, LPFC_CGN_NOT_SENT, scsi_bufflen(cmnd), 5464 shost); 5465 5466 out_fail_command: 5467 scsi_done(cmnd); 5468 return 0; 5469} 5470 5471/* 5472 * lpfc_vmid_vport_cleanup - cleans up the resources associated with a vport 5473 * @vport: The virtual port for which this call is being executed. 5474 */ 5475void lpfc_vmid_vport_cleanup(struct lpfc_vport *vport) 5476{ 5477 u32 bucket; 5478 struct lpfc_vmid *cur; 5479 5480 if (vport->port_type == LPFC_PHYSICAL_PORT) 5481 del_timer_sync(&vport->phba->inactive_vmid_poll); 5482 5483 kfree(vport->qfpa_res); 5484 kfree(vport->vmid_priority.vmid_range); 5485 kfree(vport->vmid); 5486 5487 if (!hash_empty(vport->hash_table)) 5488 hash_for_each(vport->hash_table, bucket, cur, hnode) 5489 hash_del(&cur->hnode); 5490 5491 vport->qfpa_res = NULL; 5492 vport->vmid_priority.vmid_range = NULL; 5493 vport->vmid = NULL; 5494 vport->cur_vmid_cnt = 0; 5495} 5496 5497/** 5498 * lpfc_abort_handler - scsi_host_template eh_abort_handler entry point 5499 * @cmnd: Pointer to scsi_cmnd data structure. 5500 * 5501 * This routine aborts @cmnd pending in base driver. 5502 * 5503 * Return code : 5504 * 0x2003 - Error 5505 * 0x2002 - Success 5506 **/ 5507static int 5508lpfc_abort_handler(struct scsi_cmnd *cmnd) 5509{ 5510 struct Scsi_Host *shost = cmnd->device->host; 5511 struct fc_rport *rport = starget_to_rport(scsi_target(cmnd->device)); 5512 struct lpfc_vport *vport = (struct lpfc_vport *) shost->hostdata; 5513 struct lpfc_hba *phba = vport->phba; 5514 struct lpfc_iocbq *iocb; 5515 struct lpfc_io_buf *lpfc_cmd; 5516 int ret = SUCCESS, status = 0; 5517 struct lpfc_sli_ring *pring_s4 = NULL; 5518 struct lpfc_sli_ring *pring = NULL; 5519 int ret_val; 5520 unsigned long flags; 5521 DECLARE_WAIT_QUEUE_HEAD_ONSTACK(waitq); 5522 5523 status = fc_block_rport(rport); 5524 if (status != 0 && status != SUCCESS) 5525 return status; 5526 5527 lpfc_cmd = (struct lpfc_io_buf *)cmnd->host_scribble; 5528 if (!lpfc_cmd) 5529 return ret; 5530 5531 /* Guard against IO completion being called at same time */ 5532 spin_lock_irqsave(&lpfc_cmd->buf_lock, flags); 5533 5534 spin_lock(&phba->hbalock); 5535 /* driver queued commands are in process of being flushed */ 5536 if (phba->hba_flag & HBA_IOQ_FLUSH) { 5537 lpfc_printf_vlog(vport, KERN_WARNING, LOG_FCP, 5538 "3168 SCSI Layer abort requested I/O has been " 5539 "flushed by LLD.\n"); 5540 ret = FAILED; 5541 goto out_unlock_hba; 5542 } 5543 5544 if (!lpfc_cmd->pCmd) { 5545 lpfc_printf_vlog(vport, KERN_WARNING, LOG_FCP, 5546 "2873 SCSI Layer I/O Abort Request IO CMPL Status " 5547 "x%x ID %d LUN %llu\n", 5548 SUCCESS, cmnd->device->id, cmnd->device->lun); 5549 goto out_unlock_hba; 5550 } 5551 5552 iocb = &lpfc_cmd->cur_iocbq; 5553 if (phba->sli_rev == LPFC_SLI_REV4) { 5554 pring_s4 = phba->sli4_hba.hdwq[iocb->hba_wqidx].io_wq->pring; 5555 if (!pring_s4) { 5556 ret = FAILED; 5557 goto out_unlock_hba; 5558 } 5559 spin_lock(&pring_s4->ring_lock); 5560 } 5561 /* the command is in process of being cancelled */ 5562 if (!(iocb->cmd_flag & LPFC_IO_ON_TXCMPLQ)) { 5563 lpfc_printf_vlog(vport, KERN_WARNING, LOG_FCP, 5564 "3169 SCSI Layer abort requested I/O has been " 5565 "cancelled by LLD.\n"); 5566 ret = FAILED; 5567 goto out_unlock_ring; 5568 } 5569 /* 5570 * If pCmd field of the corresponding lpfc_io_buf structure 5571 * points to a different SCSI command, then the driver has 5572 * already completed this command, but the midlayer did not 5573 * see the completion before the eh fired. Just return SUCCESS. 5574 */ 5575 if (lpfc_cmd->pCmd != cmnd) { 5576 lpfc_printf_vlog(vport, KERN_WARNING, LOG_FCP, 5577 "3170 SCSI Layer abort requested I/O has been " 5578 "completed by LLD.\n"); 5579 goto out_unlock_ring; 5580 } 5581 5582 WARN_ON(iocb->io_buf != lpfc_cmd); 5583 5584 /* abort issued in recovery is still in progress */ 5585 if (iocb->cmd_flag & LPFC_DRIVER_ABORTED) { 5586 lpfc_printf_vlog(vport, KERN_WARNING, LOG_FCP, 5587 "3389 SCSI Layer I/O Abort Request is pending\n"); 5588 if (phba->sli_rev == LPFC_SLI_REV4) 5589 spin_unlock(&pring_s4->ring_lock); 5590 spin_unlock(&phba->hbalock); 5591 spin_unlock_irqrestore(&lpfc_cmd->buf_lock, flags); 5592 goto wait_for_cmpl; 5593 } 5594 5595 lpfc_cmd->waitq = &waitq; 5596 if (phba->sli_rev == LPFC_SLI_REV4) { 5597 spin_unlock(&pring_s4->ring_lock); 5598 ret_val = lpfc_sli4_issue_abort_iotag(phba, iocb, 5599 lpfc_sli_abort_fcp_cmpl); 5600 } else { 5601 pring = &phba->sli.sli3_ring[LPFC_FCP_RING]; 5602 ret_val = lpfc_sli_issue_abort_iotag(phba, pring, iocb, 5603 lpfc_sli_abort_fcp_cmpl); 5604 } 5605 5606 /* Make sure HBA is alive */ 5607 lpfc_issue_hb_tmo(phba); 5608 5609 if (ret_val != IOCB_SUCCESS) { 5610 /* Indicate the IO is not being aborted by the driver. */ 5611 lpfc_cmd->waitq = NULL; 5612 ret = FAILED; 5613 goto out_unlock_hba; 5614 } 5615 5616 /* no longer need the lock after this point */ 5617 spin_unlock(&phba->hbalock); 5618 spin_unlock_irqrestore(&lpfc_cmd->buf_lock, flags); 5619 5620 if (phba->cfg_poll & DISABLE_FCP_RING_INT) 5621 lpfc_sli_handle_fast_ring_event(phba, 5622 &phba->sli.sli3_ring[LPFC_FCP_RING], HA_R0RE_REQ); 5623 5624wait_for_cmpl: 5625 /* 5626 * cmd_flag is set to LPFC_DRIVER_ABORTED before we wait 5627 * for abort to complete. 5628 */ 5629 wait_event_timeout(waitq, 5630 (lpfc_cmd->pCmd != cmnd), 5631 msecs_to_jiffies(2*vport->cfg_devloss_tmo*1000)); 5632 5633 spin_lock(&lpfc_cmd->buf_lock); 5634 5635 if (lpfc_cmd->pCmd == cmnd) { 5636 ret = FAILED; 5637 lpfc_printf_vlog(vport, KERN_ERR, LOG_TRACE_EVENT, 5638 "0748 abort handler timed out waiting " 5639 "for aborting I/O (xri:x%x) to complete: " 5640 "ret %#x, ID %d, LUN %llu\n", 5641 iocb->sli4_xritag, ret, 5642 cmnd->device->id, cmnd->device->lun); 5643 } 5644 5645 lpfc_cmd->waitq = NULL; 5646 5647 spin_unlock(&lpfc_cmd->buf_lock); 5648 goto out; 5649 5650out_unlock_ring: 5651 if (phba->sli_rev == LPFC_SLI_REV4) 5652 spin_unlock(&pring_s4->ring_lock); 5653out_unlock_hba: 5654 spin_unlock(&phba->hbalock); 5655 spin_unlock_irqrestore(&lpfc_cmd->buf_lock, flags); 5656out: 5657 lpfc_printf_vlog(vport, KERN_WARNING, LOG_FCP, 5658 "0749 SCSI Layer I/O Abort Request Status x%x ID %d " 5659 "LUN %llu\n", ret, cmnd->device->id, 5660 cmnd->device->lun); 5661 return ret; 5662} 5663 5664static char * 5665lpfc_taskmgmt_name(uint8_t task_mgmt_cmd) 5666{ 5667 switch (task_mgmt_cmd) { 5668 case FCP_ABORT_TASK_SET: 5669 return "ABORT_TASK_SET"; 5670 case FCP_CLEAR_TASK_SET: 5671 return "FCP_CLEAR_TASK_SET"; 5672 case FCP_BUS_RESET: 5673 return "FCP_BUS_RESET"; 5674 case FCP_LUN_RESET: 5675 return "FCP_LUN_RESET"; 5676 case FCP_TARGET_RESET: 5677 return "FCP_TARGET_RESET"; 5678 case FCP_CLEAR_ACA: 5679 return "FCP_CLEAR_ACA"; 5680 case FCP_TERMINATE_TASK: 5681 return "FCP_TERMINATE_TASK"; 5682 default: 5683 return "unknown"; 5684 } 5685} 5686 5687 5688/** 5689 * lpfc_check_fcp_rsp - check the returned fcp_rsp to see if task failed 5690 * @vport: The virtual port for which this call is being executed. 5691 * @lpfc_cmd: Pointer to lpfc_io_buf data structure. 5692 * 5693 * This routine checks the FCP RSP INFO to see if the tsk mgmt command succeded 5694 * 5695 * Return code : 5696 * 0x2003 - Error 5697 * 0x2002 - Success 5698 **/ 5699static int 5700lpfc_check_fcp_rsp(struct lpfc_vport *vport, struct lpfc_io_buf *lpfc_cmd) 5701{ 5702 struct fcp_rsp *fcprsp = lpfc_cmd->fcp_rsp; 5703 uint32_t rsp_info; 5704 uint32_t rsp_len; 5705 uint8_t rsp_info_code; 5706 int ret = FAILED; 5707 5708 5709 if (fcprsp == NULL) 5710 lpfc_printf_vlog(vport, KERN_INFO, LOG_FCP, 5711 "0703 fcp_rsp is missing\n"); 5712 else { 5713 rsp_info = fcprsp->rspStatus2; 5714 rsp_len = be32_to_cpu(fcprsp->rspRspLen); 5715 rsp_info_code = fcprsp->rspInfo3; 5716 5717 5718 lpfc_printf_vlog(vport, KERN_INFO, 5719 LOG_FCP, 5720 "0706 fcp_rsp valid 0x%x," 5721 " rsp len=%d code 0x%x\n", 5722 rsp_info, 5723 rsp_len, rsp_info_code); 5724 5725 /* If FCP_RSP_LEN_VALID bit is one, then the FCP_RSP_LEN 5726 * field specifies the number of valid bytes of FCP_RSP_INFO. 5727 * The FCP_RSP_LEN field shall be set to 0x04 or 0x08 5728 */ 5729 if ((fcprsp->rspStatus2 & RSP_LEN_VALID) && 5730 ((rsp_len == 8) || (rsp_len == 4))) { 5731 switch (rsp_info_code) { 5732 case RSP_NO_FAILURE: 5733 lpfc_printf_vlog(vport, KERN_INFO, LOG_FCP, 5734 "0715 Task Mgmt No Failure\n"); 5735 ret = SUCCESS; 5736 break; 5737 case RSP_TM_NOT_SUPPORTED: /* TM rejected */ 5738 lpfc_printf_vlog(vport, KERN_INFO, LOG_FCP, 5739 "0716 Task Mgmt Target " 5740 "reject\n"); 5741 break; 5742 case RSP_TM_NOT_COMPLETED: /* TM failed */ 5743 lpfc_printf_vlog(vport, KERN_INFO, LOG_FCP, 5744 "0717 Task Mgmt Target " 5745 "failed TM\n"); 5746 break; 5747 case RSP_TM_INVALID_LU: /* TM to invalid LU! */ 5748 lpfc_printf_vlog(vport, KERN_INFO, LOG_FCP, 5749 "0718 Task Mgmt to invalid " 5750 "LUN\n"); 5751 break; 5752 } 5753 } 5754 } 5755 return ret; 5756} 5757 5758 5759/** 5760 * lpfc_send_taskmgmt - Generic SCSI Task Mgmt Handler 5761 * @vport: The virtual port for which this call is being executed. 5762 * @rport: Pointer to remote port 5763 * @tgt_id: Target ID of remote device. 5764 * @lun_id: Lun number for the TMF 5765 * @task_mgmt_cmd: type of TMF to send 5766 * 5767 * This routine builds and sends a TMF (SCSI Task Mgmt Function) to 5768 * a remote port. 5769 * 5770 * Return Code: 5771 * 0x2003 - Error 5772 * 0x2002 - Success. 5773 **/ 5774static int 5775lpfc_send_taskmgmt(struct lpfc_vport *vport, struct fc_rport *rport, 5776 unsigned int tgt_id, uint64_t lun_id, 5777 uint8_t task_mgmt_cmd) 5778{ 5779 struct lpfc_hba *phba = vport->phba; 5780 struct lpfc_io_buf *lpfc_cmd; 5781 struct lpfc_iocbq *iocbq; 5782 struct lpfc_iocbq *iocbqrsp; 5783 struct lpfc_rport_data *rdata; 5784 struct lpfc_nodelist *pnode; 5785 int ret; 5786 int status; 5787 5788 rdata = rport->dd_data; 5789 if (!rdata || !rdata->pnode) 5790 return FAILED; 5791 pnode = rdata->pnode; 5792 5793 lpfc_cmd = lpfc_get_scsi_buf(phba, rdata->pnode, NULL); 5794 if (lpfc_cmd == NULL) 5795 return FAILED; 5796 lpfc_cmd->timeout = phba->cfg_task_mgmt_tmo; 5797 lpfc_cmd->rdata = rdata; 5798 lpfc_cmd->pCmd = NULL; 5799 lpfc_cmd->ndlp = pnode; 5800 5801 status = phba->lpfc_scsi_prep_task_mgmt_cmd(vport, lpfc_cmd, lun_id, 5802 task_mgmt_cmd); 5803 if (!status) { 5804 lpfc_release_scsi_buf(phba, lpfc_cmd); 5805 return FAILED; 5806 } 5807 5808 iocbq = &lpfc_cmd->cur_iocbq; 5809 iocbqrsp = lpfc_sli_get_iocbq(phba); 5810 if (iocbqrsp == NULL) { 5811 lpfc_release_scsi_buf(phba, lpfc_cmd); 5812 return FAILED; 5813 } 5814 iocbq->cmd_cmpl = lpfc_tskmgmt_def_cmpl; 5815 iocbq->vport = vport; 5816 5817 lpfc_printf_vlog(vport, KERN_INFO, LOG_FCP, 5818 "0702 Issue %s to TGT %d LUN %llu " 5819 "rpi x%x nlp_flag x%x Data: x%x x%x\n", 5820 lpfc_taskmgmt_name(task_mgmt_cmd), tgt_id, lun_id, 5821 pnode->nlp_rpi, pnode->nlp_flag, iocbq->sli4_xritag, 5822 iocbq->cmd_flag); 5823 5824 status = lpfc_sli_issue_iocb_wait(phba, LPFC_FCP_RING, 5825 iocbq, iocbqrsp, lpfc_cmd->timeout); 5826 if ((status != IOCB_SUCCESS) || 5827 (get_job_ulpstatus(phba, iocbqrsp) != IOSTAT_SUCCESS)) { 5828 if (status != IOCB_SUCCESS || 5829 get_job_ulpstatus(phba, iocbqrsp) != IOSTAT_FCP_RSP_ERROR) 5830 lpfc_printf_vlog(vport, KERN_ERR, LOG_TRACE_EVENT, 5831 "0727 TMF %s to TGT %d LUN %llu " 5832 "failed (%d, %d) cmd_flag x%x\n", 5833 lpfc_taskmgmt_name(task_mgmt_cmd), 5834 tgt_id, lun_id, 5835 get_job_ulpstatus(phba, iocbqrsp), 5836 get_job_word4(phba, iocbqrsp), 5837 iocbq->cmd_flag); 5838 /* if ulpStatus != IOCB_SUCCESS, then status == IOCB_SUCCESS */ 5839 if (status == IOCB_SUCCESS) { 5840 if (get_job_ulpstatus(phba, iocbqrsp) == 5841 IOSTAT_FCP_RSP_ERROR) 5842 /* Something in the FCP_RSP was invalid. 5843 * Check conditions */ 5844 ret = lpfc_check_fcp_rsp(vport, lpfc_cmd); 5845 else 5846 ret = FAILED; 5847 } else if ((status == IOCB_TIMEDOUT) || 5848 (status == IOCB_ABORTED)) { 5849 ret = TIMEOUT_ERROR; 5850 } else { 5851 ret = FAILED; 5852 } 5853 } else 5854 ret = SUCCESS; 5855 5856 lpfc_sli_release_iocbq(phba, iocbqrsp); 5857 5858 if (status != IOCB_TIMEDOUT) 5859 lpfc_release_scsi_buf(phba, lpfc_cmd); 5860 5861 return ret; 5862} 5863 5864/** 5865 * lpfc_chk_tgt_mapped - 5866 * @vport: The virtual port to check on 5867 * @rport: Pointer to fc_rport data structure. 5868 * 5869 * This routine delays until the scsi target (aka rport) for the 5870 * command exists (is present and logged in) or we declare it non-existent. 5871 * 5872 * Return code : 5873 * 0x2003 - Error 5874 * 0x2002 - Success 5875 **/ 5876static int 5877lpfc_chk_tgt_mapped(struct lpfc_vport *vport, struct fc_rport *rport) 5878{ 5879 struct lpfc_rport_data *rdata; 5880 struct lpfc_nodelist *pnode = NULL; 5881 unsigned long later; 5882 5883 rdata = rport->dd_data; 5884 if (!rdata) { 5885 lpfc_printf_vlog(vport, KERN_INFO, LOG_FCP, 5886 "0797 Tgt Map rport failure: rdata x%px\n", rdata); 5887 return FAILED; 5888 } 5889 pnode = rdata->pnode; 5890 5891 /* 5892 * If target is not in a MAPPED state, delay until 5893 * target is rediscovered or devloss timeout expires. 5894 */ 5895 later = msecs_to_jiffies(2 * vport->cfg_devloss_tmo * 1000) + jiffies; 5896 while (time_after(later, jiffies)) { 5897 if (!pnode) 5898 return FAILED; 5899 if (pnode->nlp_state == NLP_STE_MAPPED_NODE) 5900 return SUCCESS; 5901 schedule_timeout_uninterruptible(msecs_to_jiffies(500)); 5902 rdata = rport->dd_data; 5903 if (!rdata) 5904 return FAILED; 5905 pnode = rdata->pnode; 5906 } 5907 if (!pnode || (pnode->nlp_state != NLP_STE_MAPPED_NODE)) 5908 return FAILED; 5909 return SUCCESS; 5910} 5911 5912/** 5913 * lpfc_reset_flush_io_context - 5914 * @vport: The virtual port (scsi_host) for the flush context 5915 * @tgt_id: If aborting by Target contect - specifies the target id 5916 * @lun_id: If aborting by Lun context - specifies the lun id 5917 * @context: specifies the context level to flush at. 5918 * 5919 * After a reset condition via TMF, we need to flush orphaned i/o 5920 * contexts from the adapter. This routine aborts any contexts 5921 * outstanding, then waits for their completions. The wait is 5922 * bounded by devloss_tmo though. 5923 * 5924 * Return code : 5925 * 0x2003 - Error 5926 * 0x2002 - Success 5927 **/ 5928static int 5929lpfc_reset_flush_io_context(struct lpfc_vport *vport, uint16_t tgt_id, 5930 uint64_t lun_id, lpfc_ctx_cmd context) 5931{ 5932 struct lpfc_hba *phba = vport->phba; 5933 unsigned long later; 5934 int cnt; 5935 5936 cnt = lpfc_sli_sum_iocb(vport, tgt_id, lun_id, context); 5937 if (cnt) 5938 lpfc_sli_abort_taskmgmt(vport, 5939 &phba->sli.sli3_ring[LPFC_FCP_RING], 5940 tgt_id, lun_id, context); 5941 later = msecs_to_jiffies(2 * vport->cfg_devloss_tmo * 1000) + jiffies; 5942 while (time_after(later, jiffies) && cnt) { 5943 schedule_timeout_uninterruptible(msecs_to_jiffies(20)); 5944 cnt = lpfc_sli_sum_iocb(vport, tgt_id, lun_id, context); 5945 } 5946 if (cnt) { 5947 lpfc_printf_vlog(vport, KERN_ERR, LOG_TRACE_EVENT, 5948 "0724 I/O flush failure for context %s : cnt x%x\n", 5949 ((context == LPFC_CTX_LUN) ? "LUN" : 5950 ((context == LPFC_CTX_TGT) ? "TGT" : 5951 ((context == LPFC_CTX_HOST) ? "HOST" : "Unknown"))), 5952 cnt); 5953 return FAILED; 5954 } 5955 return SUCCESS; 5956} 5957 5958/** 5959 * lpfc_device_reset_handler - scsi_host_template eh_device_reset entry point 5960 * @cmnd: Pointer to scsi_cmnd data structure. 5961 * 5962 * This routine does a device reset by sending a LUN_RESET task management 5963 * command. 5964 * 5965 * Return code : 5966 * 0x2003 - Error 5967 * 0x2002 - Success 5968 **/ 5969static int 5970lpfc_device_reset_handler(struct scsi_cmnd *cmnd) 5971{ 5972 struct Scsi_Host *shost = cmnd->device->host; 5973 struct fc_rport *rport = starget_to_rport(scsi_target(cmnd->device)); 5974 struct lpfc_vport *vport = (struct lpfc_vport *) shost->hostdata; 5975 struct lpfc_rport_data *rdata; 5976 struct lpfc_nodelist *pnode; 5977 unsigned tgt_id = cmnd->device->id; 5978 uint64_t lun_id = cmnd->device->lun; 5979 struct lpfc_scsi_event_header scsi_event; 5980 int status; 5981 u32 logit = LOG_FCP; 5982 5983 if (!rport) 5984 return FAILED; 5985 5986 rdata = rport->dd_data; 5987 if (!rdata || !rdata->pnode) { 5988 lpfc_printf_vlog(vport, KERN_ERR, LOG_TRACE_EVENT, 5989 "0798 Device Reset rdata failure: rdata x%px\n", 5990 rdata); 5991 return FAILED; 5992 } 5993 pnode = rdata->pnode; 5994 status = fc_block_rport(rport); 5995 if (status != 0 && status != SUCCESS) 5996 return status; 5997 5998 status = lpfc_chk_tgt_mapped(vport, rport); 5999 if (status == FAILED) { 6000 lpfc_printf_vlog(vport, KERN_ERR, LOG_TRACE_EVENT, 6001 "0721 Device Reset rport failure: rdata x%px\n", rdata); 6002 return FAILED; 6003 } 6004 6005 scsi_event.event_type = FC_REG_SCSI_EVENT; 6006 scsi_event.subcategory = LPFC_EVENT_LUNRESET; 6007 scsi_event.lun = lun_id; 6008 memcpy(scsi_event.wwpn, &pnode->nlp_portname, sizeof(struct lpfc_name)); 6009 memcpy(scsi_event.wwnn, &pnode->nlp_nodename, sizeof(struct lpfc_name)); 6010 6011 fc_host_post_vendor_event(shost, fc_get_event_number(), 6012 sizeof(scsi_event), (char *)&scsi_event, LPFC_NL_VENDOR_ID); 6013 6014 status = lpfc_send_taskmgmt(vport, rport, tgt_id, lun_id, 6015 FCP_LUN_RESET); 6016 if (status != SUCCESS) 6017 logit = LOG_TRACE_EVENT; 6018 6019 lpfc_printf_vlog(vport, KERN_ERR, logit, 6020 "0713 SCSI layer issued Device Reset (%d, %llu) " 6021 "return x%x\n", tgt_id, lun_id, status); 6022 6023 /* 6024 * We have to clean up i/o as : they may be orphaned by the TMF; 6025 * or if the TMF failed, they may be in an indeterminate state. 6026 * So, continue on. 6027 * We will report success if all the i/o aborts successfully. 6028 */ 6029 if (status == SUCCESS) 6030 status = lpfc_reset_flush_io_context(vport, tgt_id, lun_id, 6031 LPFC_CTX_LUN); 6032 6033 return status; 6034} 6035 6036/** 6037 * lpfc_target_reset_handler - scsi_host_template eh_target_reset entry point 6038 * @cmnd: Pointer to scsi_cmnd data structure. 6039 * 6040 * This routine does a target reset by sending a TARGET_RESET task management 6041 * command. 6042 * 6043 * Return code : 6044 * 0x2003 - Error 6045 * 0x2002 - Success 6046 **/ 6047static int 6048lpfc_target_reset_handler(struct scsi_cmnd *cmnd) 6049{ 6050 struct Scsi_Host *shost = cmnd->device->host; 6051 struct fc_rport *rport = starget_to_rport(scsi_target(cmnd->device)); 6052 struct lpfc_vport *vport = (struct lpfc_vport *) shost->hostdata; 6053 struct lpfc_rport_data *rdata; 6054 struct lpfc_nodelist *pnode; 6055 unsigned tgt_id = cmnd->device->id; 6056 uint64_t lun_id = cmnd->device->lun; 6057 struct lpfc_scsi_event_header scsi_event; 6058 int status; 6059 u32 logit = LOG_FCP; 6060 u32 dev_loss_tmo = vport->cfg_devloss_tmo; 6061 unsigned long flags; 6062 DECLARE_WAIT_QUEUE_HEAD_ONSTACK(waitq); 6063 6064 if (!rport) 6065 return FAILED; 6066 6067 rdata = rport->dd_data; 6068 if (!rdata || !rdata->pnode) { 6069 lpfc_printf_vlog(vport, KERN_ERR, LOG_TRACE_EVENT, 6070 "0799 Target Reset rdata failure: rdata x%px\n", 6071 rdata); 6072 return FAILED; 6073 } 6074 pnode = rdata->pnode; 6075 status = fc_block_rport(rport); 6076 if (status != 0 && status != SUCCESS) 6077 return status; 6078 6079 status = lpfc_chk_tgt_mapped(vport, rport); 6080 if (status == FAILED) { 6081 lpfc_printf_vlog(vport, KERN_ERR, LOG_TRACE_EVENT, 6082 "0722 Target Reset rport failure: rdata x%px\n", rdata); 6083 if (pnode) { 6084 spin_lock_irqsave(&pnode->lock, flags); 6085 pnode->nlp_flag &= ~NLP_NPR_ADISC; 6086 pnode->nlp_fcp_info &= ~NLP_FCP_2_DEVICE; 6087 spin_unlock_irqrestore(&pnode->lock, flags); 6088 } 6089 lpfc_reset_flush_io_context(vport, tgt_id, lun_id, 6090 LPFC_CTX_TGT); 6091 return FAST_IO_FAIL; 6092 } 6093 6094 scsi_event.event_type = FC_REG_SCSI_EVENT; 6095 scsi_event.subcategory = LPFC_EVENT_TGTRESET; 6096 scsi_event.lun = 0; 6097 memcpy(scsi_event.wwpn, &pnode->nlp_portname, sizeof(struct lpfc_name)); 6098 memcpy(scsi_event.wwnn, &pnode->nlp_nodename, sizeof(struct lpfc_name)); 6099 6100 fc_host_post_vendor_event(shost, fc_get_event_number(), 6101 sizeof(scsi_event), (char *)&scsi_event, LPFC_NL_VENDOR_ID); 6102 6103 status = lpfc_send_taskmgmt(vport, rport, tgt_id, lun_id, 6104 FCP_TARGET_RESET); 6105 if (status != SUCCESS) { 6106 logit = LOG_TRACE_EVENT; 6107 6108 /* Issue LOGO, if no LOGO is outstanding */ 6109 spin_lock_irqsave(&pnode->lock, flags); 6110 if (!(pnode->save_flags & NLP_WAIT_FOR_LOGO) && 6111 !pnode->logo_waitq) { 6112 pnode->logo_waitq = &waitq; 6113 pnode->nlp_fcp_info &= ~NLP_FCP_2_DEVICE; 6114 pnode->nlp_flag |= NLP_ISSUE_LOGO; 6115 pnode->save_flags |= NLP_WAIT_FOR_LOGO; 6116 spin_unlock_irqrestore(&pnode->lock, flags); 6117 lpfc_unreg_rpi(vport, pnode); 6118 wait_event_timeout(waitq, 6119 (!(pnode->save_flags & 6120 NLP_WAIT_FOR_LOGO)), 6121 msecs_to_jiffies(dev_loss_tmo * 6122 1000)); 6123 6124 if (pnode->save_flags & NLP_WAIT_FOR_LOGO) { 6125 lpfc_printf_vlog(vport, KERN_ERR, logit, 6126 "0725 SCSI layer TGTRST " 6127 "failed & LOGO TMO (%d, %llu) " 6128 "return x%x\n", 6129 tgt_id, lun_id, status); 6130 spin_lock_irqsave(&pnode->lock, flags); 6131 pnode->save_flags &= ~NLP_WAIT_FOR_LOGO; 6132 } else { 6133 spin_lock_irqsave(&pnode->lock, flags); 6134 } 6135 pnode->logo_waitq = NULL; 6136 spin_unlock_irqrestore(&pnode->lock, flags); 6137 status = SUCCESS; 6138 6139 } else { 6140 spin_unlock_irqrestore(&pnode->lock, flags); 6141 status = FAILED; 6142 } 6143 } 6144 6145 lpfc_printf_vlog(vport, KERN_ERR, logit, 6146 "0723 SCSI layer issued Target Reset (%d, %llu) " 6147 "return x%x\n", tgt_id, lun_id, status); 6148 6149 /* 6150 * We have to clean up i/o as : they may be orphaned by the TMF; 6151 * or if the TMF failed, they may be in an indeterminate state. 6152 * So, continue on. 6153 * We will report success if all the i/o aborts successfully. 6154 */ 6155 if (status == SUCCESS) 6156 status = lpfc_reset_flush_io_context(vport, tgt_id, lun_id, 6157 LPFC_CTX_TGT); 6158 return status; 6159} 6160 6161/** 6162 * lpfc_host_reset_handler - scsi_host_template eh_host_reset_handler entry pt 6163 * @cmnd: Pointer to scsi_cmnd data structure. 6164 * 6165 * This routine does host reset to the adaptor port. It brings the HBA 6166 * offline, performs a board restart, and then brings the board back online. 6167 * The lpfc_offline calls lpfc_sli_hba_down which will abort and local 6168 * reject all outstanding SCSI commands to the host and error returned 6169 * back to SCSI mid-level. As this will be SCSI mid-level's last resort 6170 * of error handling, it will only return error if resetting of the adapter 6171 * is not successful; in all other cases, will return success. 6172 * 6173 * Return code : 6174 * 0x2003 - Error 6175 * 0x2002 - Success 6176 **/ 6177static int 6178lpfc_host_reset_handler(struct scsi_cmnd *cmnd) 6179{ 6180 struct Scsi_Host *shost = cmnd->device->host; 6181 struct lpfc_vport *vport = (struct lpfc_vport *) shost->hostdata; 6182 struct lpfc_hba *phba = vport->phba; 6183 int rc, ret = SUCCESS; 6184 6185 lpfc_printf_vlog(vport, KERN_ERR, LOG_FCP, 6186 "3172 SCSI layer issued Host Reset Data:\n"); 6187 6188 lpfc_offline_prep(phba, LPFC_MBX_WAIT); 6189 lpfc_offline(phba); 6190 rc = lpfc_sli_brdrestart(phba); 6191 if (rc) 6192 goto error; 6193 6194 /* Wait for successful restart of adapter */ 6195 if (phba->sli_rev < LPFC_SLI_REV4) { 6196 rc = lpfc_sli_chipset_init(phba); 6197 if (rc) 6198 goto error; 6199 } 6200 6201 rc = lpfc_online(phba); 6202 if (rc) 6203 goto error; 6204 6205 lpfc_unblock_mgmt_io(phba); 6206 6207 return ret; 6208error: 6209 lpfc_printf_vlog(vport, KERN_ERR, LOG_TRACE_EVENT, 6210 "3323 Failed host reset\n"); 6211 lpfc_unblock_mgmt_io(phba); 6212 return FAILED; 6213} 6214 6215/** 6216 * lpfc_slave_alloc - scsi_host_template slave_alloc entry point 6217 * @sdev: Pointer to scsi_device. 6218 * 6219 * This routine populates the cmds_per_lun count + 2 scsi_bufs into this host's 6220 * globally available list of scsi buffers. This routine also makes sure scsi 6221 * buffer is not allocated more than HBA limit conveyed to midlayer. This list 6222 * of scsi buffer exists for the lifetime of the driver. 6223 * 6224 * Return codes: 6225 * non-0 - Error 6226 * 0 - Success 6227 **/ 6228static int 6229lpfc_slave_alloc(struct scsi_device *sdev) 6230{ 6231 struct lpfc_vport *vport = (struct lpfc_vport *) sdev->host->hostdata; 6232 struct lpfc_hba *phba = vport->phba; 6233 struct fc_rport *rport = starget_to_rport(scsi_target(sdev)); 6234 uint32_t total = 0; 6235 uint32_t num_to_alloc = 0; 6236 int num_allocated = 0; 6237 uint32_t sdev_cnt; 6238 struct lpfc_device_data *device_data; 6239 unsigned long flags; 6240 struct lpfc_name target_wwpn; 6241 6242 if (!rport || fc_remote_port_chkready(rport)) 6243 return -ENXIO; 6244 6245 if (phba->cfg_fof) { 6246 6247 /* 6248 * Check to see if the device data structure for the lun 6249 * exists. If not, create one. 6250 */ 6251 6252 u64_to_wwn(rport->port_name, target_wwpn.u.wwn); 6253 spin_lock_irqsave(&phba->devicelock, flags); 6254 device_data = __lpfc_get_device_data(phba, 6255 &phba->luns, 6256 &vport->fc_portname, 6257 &target_wwpn, 6258 sdev->lun); 6259 if (!device_data) { 6260 spin_unlock_irqrestore(&phba->devicelock, flags); 6261 device_data = lpfc_create_device_data(phba, 6262 &vport->fc_portname, 6263 &target_wwpn, 6264 sdev->lun, 6265 phba->cfg_XLanePriority, 6266 true); 6267 if (!device_data) 6268 return -ENOMEM; 6269 spin_lock_irqsave(&phba->devicelock, flags); 6270 list_add_tail(&device_data->listentry, &phba->luns); 6271 } 6272 device_data->rport_data = rport->dd_data; 6273 device_data->available = true; 6274 spin_unlock_irqrestore(&phba->devicelock, flags); 6275 sdev->hostdata = device_data; 6276 } else { 6277 sdev->hostdata = rport->dd_data; 6278 } 6279 sdev_cnt = atomic_inc_return(&phba->sdev_cnt); 6280 6281 /* For SLI4, all IO buffers are pre-allocated */ 6282 if (phba->sli_rev == LPFC_SLI_REV4) 6283 return 0; 6284 6285 /* This code path is now ONLY for SLI3 adapters */ 6286 6287 /* 6288 * Populate the cmds_per_lun count scsi_bufs into this host's globally 6289 * available list of scsi buffers. Don't allocate more than the 6290 * HBA limit conveyed to the midlayer via the host structure. The 6291 * formula accounts for the lun_queue_depth + error handlers + 1 6292 * extra. This list of scsi bufs exists for the lifetime of the driver. 6293 */ 6294 total = phba->total_scsi_bufs; 6295 num_to_alloc = vport->cfg_lun_queue_depth + 2; 6296 6297 /* If allocated buffers are enough do nothing */ 6298 if ((sdev_cnt * (vport->cfg_lun_queue_depth + 2)) < total) 6299 return 0; 6300 6301 /* Allow some exchanges to be available always to complete discovery */ 6302 if (total >= phba->cfg_hba_queue_depth - LPFC_DISC_IOCB_BUFF_COUNT ) { 6303 lpfc_printf_vlog(vport, KERN_WARNING, LOG_FCP, 6304 "0704 At limitation of %d preallocated " 6305 "command buffers\n", total); 6306 return 0; 6307 /* Allow some exchanges to be available always to complete discovery */ 6308 } else if (total + num_to_alloc > 6309 phba->cfg_hba_queue_depth - LPFC_DISC_IOCB_BUFF_COUNT ) { 6310 lpfc_printf_vlog(vport, KERN_WARNING, LOG_FCP, 6311 "0705 Allocation request of %d " 6312 "command buffers will exceed max of %d. " 6313 "Reducing allocation request to %d.\n", 6314 num_to_alloc, phba->cfg_hba_queue_depth, 6315 (phba->cfg_hba_queue_depth - total)); 6316 num_to_alloc = phba->cfg_hba_queue_depth - total; 6317 } 6318 num_allocated = lpfc_new_scsi_buf_s3(vport, num_to_alloc); 6319 if (num_to_alloc != num_allocated) { 6320 lpfc_printf_vlog(vport, KERN_ERR, LOG_TRACE_EVENT, 6321 "0708 Allocation request of %d " 6322 "command buffers did not succeed. " 6323 "Allocated %d buffers.\n", 6324 num_to_alloc, num_allocated); 6325 } 6326 if (num_allocated > 0) 6327 phba->total_scsi_bufs += num_allocated; 6328 return 0; 6329} 6330 6331/** 6332 * lpfc_slave_configure - scsi_host_template slave_configure entry point 6333 * @sdev: Pointer to scsi_device. 6334 * 6335 * This routine configures following items 6336 * - Tag command queuing support for @sdev if supported. 6337 * - Enable SLI polling for fcp ring if ENABLE_FCP_RING_POLLING flag is set. 6338 * 6339 * Return codes: 6340 * 0 - Success 6341 **/ 6342static int 6343lpfc_slave_configure(struct scsi_device *sdev) 6344{ 6345 struct lpfc_vport *vport = (struct lpfc_vport *) sdev->host->hostdata; 6346 struct lpfc_hba *phba = vport->phba; 6347 6348 scsi_change_queue_depth(sdev, vport->cfg_lun_queue_depth); 6349 6350 if (phba->cfg_poll & ENABLE_FCP_RING_POLLING) { 6351 lpfc_sli_handle_fast_ring_event(phba, 6352 &phba->sli.sli3_ring[LPFC_FCP_RING], HA_R0RE_REQ); 6353 if (phba->cfg_poll & DISABLE_FCP_RING_INT) 6354 lpfc_poll_rearm_timer(phba); 6355 } 6356 6357 return 0; 6358} 6359 6360/** 6361 * lpfc_slave_destroy - slave_destroy entry point of SHT data structure 6362 * @sdev: Pointer to scsi_device. 6363 * 6364 * This routine sets @sdev hostatdata filed to null. 6365 **/ 6366static void 6367lpfc_slave_destroy(struct scsi_device *sdev) 6368{ 6369 struct lpfc_vport *vport = (struct lpfc_vport *) sdev->host->hostdata; 6370 struct lpfc_hba *phba = vport->phba; 6371 unsigned long flags; 6372 struct lpfc_device_data *device_data = sdev->hostdata; 6373 6374 atomic_dec(&phba->sdev_cnt); 6375 if ((phba->cfg_fof) && (device_data)) { 6376 spin_lock_irqsave(&phba->devicelock, flags); 6377 device_data->available = false; 6378 if (!device_data->oas_enabled) 6379 lpfc_delete_device_data(phba, device_data); 6380 spin_unlock_irqrestore(&phba->devicelock, flags); 6381 } 6382 sdev->hostdata = NULL; 6383 return; 6384} 6385 6386/** 6387 * lpfc_create_device_data - creates and initializes device data structure for OAS 6388 * @phba: Pointer to host bus adapter structure. 6389 * @vport_wwpn: Pointer to vport's wwpn information 6390 * @target_wwpn: Pointer to target's wwpn information 6391 * @lun: Lun on target 6392 * @pri: Priority 6393 * @atomic_create: Flag to indicate if memory should be allocated using the 6394 * GFP_ATOMIC flag or not. 6395 * 6396 * This routine creates a device data structure which will contain identifying 6397 * information for the device (host wwpn, target wwpn, lun), state of OAS, 6398 * whether or not the corresponding lun is available by the system, 6399 * and pointer to the rport data. 6400 * 6401 * Return codes: 6402 * NULL - Error 6403 * Pointer to lpfc_device_data - Success 6404 **/ 6405struct lpfc_device_data* 6406lpfc_create_device_data(struct lpfc_hba *phba, struct lpfc_name *vport_wwpn, 6407 struct lpfc_name *target_wwpn, uint64_t lun, 6408 uint32_t pri, bool atomic_create) 6409{ 6410 6411 struct lpfc_device_data *lun_info; 6412 int memory_flags; 6413 6414 if (unlikely(!phba) || !vport_wwpn || !target_wwpn || 6415 !(phba->cfg_fof)) 6416 return NULL; 6417 6418 /* Attempt to create the device data to contain lun info */ 6419 6420 if (atomic_create) 6421 memory_flags = GFP_ATOMIC; 6422 else 6423 memory_flags = GFP_KERNEL; 6424 lun_info = mempool_alloc(phba->device_data_mem_pool, memory_flags); 6425 if (!lun_info) 6426 return NULL; 6427 INIT_LIST_HEAD(&lun_info->listentry); 6428 lun_info->rport_data = NULL; 6429 memcpy(&lun_info->device_id.vport_wwpn, vport_wwpn, 6430 sizeof(struct lpfc_name)); 6431 memcpy(&lun_info->device_id.target_wwpn, target_wwpn, 6432 sizeof(struct lpfc_name)); 6433 lun_info->device_id.lun = lun; 6434 lun_info->oas_enabled = false; 6435 lun_info->priority = pri; 6436 lun_info->available = false; 6437 return lun_info; 6438} 6439 6440/** 6441 * lpfc_delete_device_data - frees a device data structure for OAS 6442 * @phba: Pointer to host bus adapter structure. 6443 * @lun_info: Pointer to device data structure to free. 6444 * 6445 * This routine frees the previously allocated device data structure passed. 6446 * 6447 **/ 6448void 6449lpfc_delete_device_data(struct lpfc_hba *phba, 6450 struct lpfc_device_data *lun_info) 6451{ 6452 6453 if (unlikely(!phba) || !lun_info || 6454 !(phba->cfg_fof)) 6455 return; 6456 6457 if (!list_empty(&lun_info->listentry)) 6458 list_del(&lun_info->listentry); 6459 mempool_free(lun_info, phba->device_data_mem_pool); 6460 return; 6461} 6462 6463/** 6464 * __lpfc_get_device_data - returns the device data for the specified lun 6465 * @phba: Pointer to host bus adapter structure. 6466 * @list: Point to list to search. 6467 * @vport_wwpn: Pointer to vport's wwpn information 6468 * @target_wwpn: Pointer to target's wwpn information 6469 * @lun: Lun on target 6470 * 6471 * This routine searches the list passed for the specified lun's device data. 6472 * This function does not hold locks, it is the responsibility of the caller 6473 * to ensure the proper lock is held before calling the function. 6474 * 6475 * Return codes: 6476 * NULL - Error 6477 * Pointer to lpfc_device_data - Success 6478 **/ 6479struct lpfc_device_data* 6480__lpfc_get_device_data(struct lpfc_hba *phba, struct list_head *list, 6481 struct lpfc_name *vport_wwpn, 6482 struct lpfc_name *target_wwpn, uint64_t lun) 6483{ 6484 6485 struct lpfc_device_data *lun_info; 6486 6487 if (unlikely(!phba) || !list || !vport_wwpn || !target_wwpn || 6488 !phba->cfg_fof) 6489 return NULL; 6490 6491 /* Check to see if the lun is already enabled for OAS. */ 6492 6493 list_for_each_entry(lun_info, list, listentry) { 6494 if ((memcmp(&lun_info->device_id.vport_wwpn, vport_wwpn, 6495 sizeof(struct lpfc_name)) == 0) && 6496 (memcmp(&lun_info->device_id.target_wwpn, target_wwpn, 6497 sizeof(struct lpfc_name)) == 0) && 6498 (lun_info->device_id.lun == lun)) 6499 return lun_info; 6500 } 6501 6502 return NULL; 6503} 6504 6505/** 6506 * lpfc_find_next_oas_lun - searches for the next oas lun 6507 * @phba: Pointer to host bus adapter structure. 6508 * @vport_wwpn: Pointer to vport's wwpn information 6509 * @target_wwpn: Pointer to target's wwpn information 6510 * @starting_lun: Pointer to the lun to start searching for 6511 * @found_vport_wwpn: Pointer to the found lun's vport wwpn information 6512 * @found_target_wwpn: Pointer to the found lun's target wwpn information 6513 * @found_lun: Pointer to the found lun. 6514 * @found_lun_status: Pointer to status of the found lun. 6515 * @found_lun_pri: Pointer to priority of the found lun. 6516 * 6517 * This routine searches the luns list for the specified lun 6518 * or the first lun for the vport/target. If the vport wwpn contains 6519 * a zero value then a specific vport is not specified. In this case 6520 * any vport which contains the lun will be considered a match. If the 6521 * target wwpn contains a zero value then a specific target is not specified. 6522 * In this case any target which contains the lun will be considered a 6523 * match. If the lun is found, the lun, vport wwpn, target wwpn and lun status 6524 * are returned. The function will also return the next lun if available. 6525 * If the next lun is not found, starting_lun parameter will be set to 6526 * NO_MORE_OAS_LUN. 6527 * 6528 * Return codes: 6529 * non-0 - Error 6530 * 0 - Success 6531 **/ 6532bool 6533lpfc_find_next_oas_lun(struct lpfc_hba *phba, struct lpfc_name *vport_wwpn, 6534 struct lpfc_name *target_wwpn, uint64_t *starting_lun, 6535 struct lpfc_name *found_vport_wwpn, 6536 struct lpfc_name *found_target_wwpn, 6537 uint64_t *found_lun, 6538 uint32_t *found_lun_status, 6539 uint32_t *found_lun_pri) 6540{ 6541 6542 unsigned long flags; 6543 struct lpfc_device_data *lun_info; 6544 struct lpfc_device_id *device_id; 6545 uint64_t lun; 6546 bool found = false; 6547 6548 if (unlikely(!phba) || !vport_wwpn || !target_wwpn || 6549 !starting_lun || !found_vport_wwpn || 6550 !found_target_wwpn || !found_lun || !found_lun_status || 6551 (*starting_lun == NO_MORE_OAS_LUN) || 6552 !phba->cfg_fof) 6553 return false; 6554 6555 lun = *starting_lun; 6556 *found_lun = NO_MORE_OAS_LUN; 6557 *starting_lun = NO_MORE_OAS_LUN; 6558 6559 /* Search for lun or the lun closet in value */ 6560 6561 spin_lock_irqsave(&phba->devicelock, flags); 6562 list_for_each_entry(lun_info, &phba->luns, listentry) { 6563 if (((wwn_to_u64(vport_wwpn->u.wwn) == 0) || 6564 (memcmp(&lun_info->device_id.vport_wwpn, vport_wwpn, 6565 sizeof(struct lpfc_name)) == 0)) && 6566 ((wwn_to_u64(target_wwpn->u.wwn) == 0) || 6567 (memcmp(&lun_info->device_id.target_wwpn, target_wwpn, 6568 sizeof(struct lpfc_name)) == 0)) && 6569 (lun_info->oas_enabled)) { 6570 device_id = &lun_info->device_id; 6571 if ((!found) && 6572 ((lun == FIND_FIRST_OAS_LUN) || 6573 (device_id->lun == lun))) { 6574 *found_lun = device_id->lun; 6575 memcpy(found_vport_wwpn, 6576 &device_id->vport_wwpn, 6577 sizeof(struct lpfc_name)); 6578 memcpy(found_target_wwpn, 6579 &device_id->target_wwpn, 6580 sizeof(struct lpfc_name)); 6581 if (lun_info->available) 6582 *found_lun_status = 6583 OAS_LUN_STATUS_EXISTS; 6584 else 6585 *found_lun_status = 0; 6586 *found_lun_pri = lun_info->priority; 6587 if (phba->cfg_oas_flags & OAS_FIND_ANY_VPORT) 6588 memset(vport_wwpn, 0x0, 6589 sizeof(struct lpfc_name)); 6590 if (phba->cfg_oas_flags & OAS_FIND_ANY_TARGET) 6591 memset(target_wwpn, 0x0, 6592 sizeof(struct lpfc_name)); 6593 found = true; 6594 } else if (found) { 6595 *starting_lun = device_id->lun; 6596 memcpy(vport_wwpn, &device_id->vport_wwpn, 6597 sizeof(struct lpfc_name)); 6598 memcpy(target_wwpn, &device_id->target_wwpn, 6599 sizeof(struct lpfc_name)); 6600 break; 6601 } 6602 } 6603 } 6604 spin_unlock_irqrestore(&phba->devicelock, flags); 6605 return found; 6606} 6607 6608/** 6609 * lpfc_enable_oas_lun - enables a lun for OAS operations 6610 * @phba: Pointer to host bus adapter structure. 6611 * @vport_wwpn: Pointer to vport's wwpn information 6612 * @target_wwpn: Pointer to target's wwpn information 6613 * @lun: Lun 6614 * @pri: Priority 6615 * 6616 * This routine enables a lun for oas operations. The routines does so by 6617 * doing the following : 6618 * 6619 * 1) Checks to see if the device data for the lun has been created. 6620 * 2) If found, sets the OAS enabled flag if not set and returns. 6621 * 3) Otherwise, creates a device data structure. 6622 * 4) If successfully created, indicates the device data is for an OAS lun, 6623 * indicates the lun is not available and add to the list of luns. 6624 * 6625 * Return codes: 6626 * false - Error 6627 * true - Success 6628 **/ 6629bool 6630lpfc_enable_oas_lun(struct lpfc_hba *phba, struct lpfc_name *vport_wwpn, 6631 struct lpfc_name *target_wwpn, uint64_t lun, uint8_t pri) 6632{ 6633 6634 struct lpfc_device_data *lun_info; 6635 unsigned long flags; 6636 6637 if (unlikely(!phba) || !vport_wwpn || !target_wwpn || 6638 !phba->cfg_fof) 6639 return false; 6640 6641 spin_lock_irqsave(&phba->devicelock, flags); 6642 6643 /* Check to see if the device data for the lun has been created */ 6644 lun_info = __lpfc_get_device_data(phba, &phba->luns, vport_wwpn, 6645 target_wwpn, lun); 6646 if (lun_info) { 6647 if (!lun_info->oas_enabled) 6648 lun_info->oas_enabled = true; 6649 lun_info->priority = pri; 6650 spin_unlock_irqrestore(&phba->devicelock, flags); 6651 return true; 6652 } 6653 6654 /* Create an lun info structure and add to list of luns */ 6655 lun_info = lpfc_create_device_data(phba, vport_wwpn, target_wwpn, lun, 6656 pri, true); 6657 if (lun_info) { 6658 lun_info->oas_enabled = true; 6659 lun_info->priority = pri; 6660 lun_info->available = false; 6661 list_add_tail(&lun_info->listentry, &phba->luns); 6662 spin_unlock_irqrestore(&phba->devicelock, flags); 6663 return true; 6664 } 6665 spin_unlock_irqrestore(&phba->devicelock, flags); 6666 return false; 6667} 6668 6669/** 6670 * lpfc_disable_oas_lun - disables a lun for OAS operations 6671 * @phba: Pointer to host bus adapter structure. 6672 * @vport_wwpn: Pointer to vport's wwpn information 6673 * @target_wwpn: Pointer to target's wwpn information 6674 * @lun: Lun 6675 * @pri: Priority 6676 * 6677 * This routine disables a lun for oas operations. The routines does so by 6678 * doing the following : 6679 * 6680 * 1) Checks to see if the device data for the lun is created. 6681 * 2) If present, clears the flag indicating this lun is for OAS. 6682 * 3) If the lun is not available by the system, the device data is 6683 * freed. 6684 * 6685 * Return codes: 6686 * false - Error 6687 * true - Success 6688 **/ 6689bool 6690lpfc_disable_oas_lun(struct lpfc_hba *phba, struct lpfc_name *vport_wwpn, 6691 struct lpfc_name *target_wwpn, uint64_t lun, uint8_t pri) 6692{ 6693 6694 struct lpfc_device_data *lun_info; 6695 unsigned long flags; 6696 6697 if (unlikely(!phba) || !vport_wwpn || !target_wwpn || 6698 !phba->cfg_fof) 6699 return false; 6700 6701 spin_lock_irqsave(&phba->devicelock, flags); 6702 6703 /* Check to see if the lun is available. */ 6704 lun_info = __lpfc_get_device_data(phba, 6705 &phba->luns, vport_wwpn, 6706 target_wwpn, lun); 6707 if (lun_info) { 6708 lun_info->oas_enabled = false; 6709 lun_info->priority = pri; 6710 if (!lun_info->available) 6711 lpfc_delete_device_data(phba, lun_info); 6712 spin_unlock_irqrestore(&phba->devicelock, flags); 6713 return true; 6714 } 6715 6716 spin_unlock_irqrestore(&phba->devicelock, flags); 6717 return false; 6718} 6719 6720static int 6721lpfc_no_command(struct Scsi_Host *shost, struct scsi_cmnd *cmnd) 6722{ 6723 return SCSI_MLQUEUE_HOST_BUSY; 6724} 6725 6726static int 6727lpfc_no_slave(struct scsi_device *sdev) 6728{ 6729 return -ENODEV; 6730} 6731 6732struct scsi_host_template lpfc_template_nvme = { 6733 .module = THIS_MODULE, 6734 .name = LPFC_DRIVER_NAME, 6735 .proc_name = LPFC_DRIVER_NAME, 6736 .info = lpfc_info, 6737 .queuecommand = lpfc_no_command, 6738 .slave_alloc = lpfc_no_slave, 6739 .slave_configure = lpfc_no_slave, 6740 .scan_finished = lpfc_scan_finished, 6741 .this_id = -1, 6742 .sg_tablesize = 1, 6743 .cmd_per_lun = 1, 6744 .shost_groups = lpfc_hba_groups, 6745 .max_sectors = 0xFFFFFFFF, 6746 .vendor_id = LPFC_NL_VENDOR_ID, 6747 .track_queue_depth = 0, 6748}; 6749 6750struct scsi_host_template lpfc_template = { 6751 .module = THIS_MODULE, 6752 .name = LPFC_DRIVER_NAME, 6753 .proc_name = LPFC_DRIVER_NAME, 6754 .info = lpfc_info, 6755 .queuecommand = lpfc_queuecommand, 6756 .eh_timed_out = fc_eh_timed_out, 6757 .eh_should_retry_cmd = fc_eh_should_retry_cmd, 6758 .eh_abort_handler = lpfc_abort_handler, 6759 .eh_device_reset_handler = lpfc_device_reset_handler, 6760 .eh_target_reset_handler = lpfc_target_reset_handler, 6761 .eh_host_reset_handler = lpfc_host_reset_handler, 6762 .slave_alloc = lpfc_slave_alloc, 6763 .slave_configure = lpfc_slave_configure, 6764 .slave_destroy = lpfc_slave_destroy, 6765 .scan_finished = lpfc_scan_finished, 6766 .this_id = -1, 6767 .sg_tablesize = LPFC_DEFAULT_SG_SEG_CNT, 6768 .cmd_per_lun = LPFC_CMD_PER_LUN, 6769 .shost_groups = lpfc_hba_groups, 6770 .max_sectors = 0xFFFFFFFF, 6771 .vendor_id = LPFC_NL_VENDOR_ID, 6772 .change_queue_depth = scsi_change_queue_depth, 6773 .track_queue_depth = 1, 6774}; 6775 6776struct scsi_host_template lpfc_vport_template = { 6777 .module = THIS_MODULE, 6778 .name = LPFC_DRIVER_NAME, 6779 .proc_name = LPFC_DRIVER_NAME, 6780 .info = lpfc_info, 6781 .queuecommand = lpfc_queuecommand, 6782 .eh_timed_out = fc_eh_timed_out, 6783 .eh_should_retry_cmd = fc_eh_should_retry_cmd, 6784 .eh_abort_handler = lpfc_abort_handler, 6785 .eh_device_reset_handler = lpfc_device_reset_handler, 6786 .eh_target_reset_handler = lpfc_target_reset_handler, 6787 .eh_bus_reset_handler = NULL, 6788 .eh_host_reset_handler = NULL, 6789 .slave_alloc = lpfc_slave_alloc, 6790 .slave_configure = lpfc_slave_configure, 6791 .slave_destroy = lpfc_slave_destroy, 6792 .scan_finished = lpfc_scan_finished, 6793 .this_id = -1, 6794 .sg_tablesize = LPFC_DEFAULT_SG_SEG_CNT, 6795 .cmd_per_lun = LPFC_CMD_PER_LUN, 6796 .shost_groups = lpfc_vport_groups, 6797 .max_sectors = 0xFFFFFFFF, 6798 .vendor_id = 0, 6799 .change_queue_depth = scsi_change_queue_depth, 6800 .track_queue_depth = 1, 6801}; 6802