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lpfc_scsi.c
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linux-6.19.14/drivers/scsi/lpfc/lpfc_scsi.c
1/******************************************************************* 2 * This file is part of the Emulex Linux Device Driver for * 3 * Fibre Channel Host Bus Adapters. * 4 * Copyright (C) 2017-2025 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 <linux/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; 171 int i; 172 173 num_rsrc_err = atomic_read(&phba->num_rsrc_err); 174 175 /* 176 * The error and success command counters are global per 177 * driver instance. If another handler has already 178 * operated on this error event, just exit. 179 */ 180 if (num_rsrc_err == 0) 181 return; 182 183 vports = lpfc_create_vport_work_array(phba); 184 if (vports != NULL) 185 for (i = 0; i <= phba->max_vports && vports[i] != NULL; i++) { 186 shost = lpfc_shost_from_vport(vports[i]); 187 shost_for_each_device(sdev, shost) { 188 if (num_rsrc_err >= sdev->queue_depth) 189 new_queue_depth = 1; 190 else 191 new_queue_depth = sdev->queue_depth - 192 num_rsrc_err; 193 scsi_change_queue_depth(sdev, new_queue_depth); 194 } 195 } 196 lpfc_destroy_vport_work_array(phba, vports); 197 atomic_set(&phba->num_rsrc_err, 0); 198} 199 200/** 201 * lpfc_scsi_dev_block - set all scsi hosts to block state 202 * @phba: Pointer to HBA context object. 203 * 204 * This function walks vport list and set each SCSI host to block state 205 * by invoking fc_remote_port_delete() routine. This function is invoked 206 * with EEH when device's PCI slot has been permanently disabled. 207 **/ 208void 209lpfc_scsi_dev_block(struct lpfc_hba *phba) 210{ 211 struct lpfc_vport **vports; 212 struct Scsi_Host *shost; 213 struct scsi_device *sdev; 214 struct fc_rport *rport; 215 int i; 216 217 vports = lpfc_create_vport_work_array(phba); 218 if (vports != NULL) 219 for (i = 0; i <= phba->max_vports && vports[i] != NULL; i++) { 220 shost = lpfc_shost_from_vport(vports[i]); 221 shost_for_each_device(sdev, shost) { 222 rport = starget_to_rport(scsi_target(sdev)); 223 fc_remote_port_delete(rport); 224 } 225 } 226 lpfc_destroy_vport_work_array(phba, vports); 227} 228 229/** 230 * lpfc_new_scsi_buf_s3 - Scsi buffer allocator for HBA with SLI3 IF spec 231 * @vport: The virtual port for which this call being executed. 232 * @num_to_alloc: The requested number of buffers to allocate. 233 * 234 * This routine allocates a scsi buffer for device with SLI-3 interface spec, 235 * the scsi buffer contains all the necessary information needed to initiate 236 * a SCSI I/O. The non-DMAable buffer region contains information to build 237 * the IOCB. The DMAable region contains memory for the FCP CMND, FCP RSP, 238 * and the initial BPL. In addition to allocating memory, the FCP CMND and 239 * FCP RSP BDEs are setup in the BPL and the BPL BDE is setup in the IOCB. 240 * 241 * Return codes: 242 * int - number of scsi buffers that were allocated. 243 * 0 = failure, less than num_to_alloc is a partial failure. 244 **/ 245static int 246lpfc_new_scsi_buf_s3(struct lpfc_vport *vport, int num_to_alloc) 247{ 248 struct lpfc_hba *phba = vport->phba; 249 struct lpfc_io_buf *psb; 250 struct ulp_bde64 *bpl; 251 IOCB_t *iocb; 252 dma_addr_t pdma_phys_fcp_cmd; 253 dma_addr_t pdma_phys_fcp_rsp; 254 dma_addr_t pdma_phys_sgl; 255 uint16_t iotag; 256 int bcnt, bpl_size; 257 258 bpl_size = phba->cfg_sg_dma_buf_size - 259 (sizeof(struct fcp_cmnd) + sizeof(struct fcp_rsp)); 260 261 lpfc_printf_vlog(vport, KERN_INFO, LOG_FCP, 262 "9067 ALLOC %d scsi_bufs: %d (%d + %d + %d)\n", 263 num_to_alloc, phba->cfg_sg_dma_buf_size, 264 (int)sizeof(struct fcp_cmnd), 265 (int)sizeof(struct fcp_rsp), bpl_size); 266 267 for (bcnt = 0; bcnt < num_to_alloc; bcnt++) { 268 psb = kzalloc(sizeof(struct lpfc_io_buf), GFP_KERNEL); 269 if (!psb) 270 break; 271 272 /* 273 * Get memory from the pci pool to map the virt space to pci 274 * bus space for an I/O. The DMA buffer includes space for the 275 * struct fcp_cmnd, struct fcp_rsp and the number of bde's 276 * necessary to support the sg_tablesize. 277 */ 278 psb->data = dma_pool_zalloc(phba->lpfc_sg_dma_buf_pool, 279 GFP_KERNEL, &psb->dma_handle); 280 if (!psb->data) { 281 kfree(psb); 282 break; 283 } 284 285 286 /* Allocate iotag for psb->cur_iocbq. */ 287 iotag = lpfc_sli_next_iotag(phba, &psb->cur_iocbq); 288 if (iotag == 0) { 289 dma_pool_free(phba->lpfc_sg_dma_buf_pool, 290 psb->data, psb->dma_handle); 291 kfree(psb); 292 break; 293 } 294 psb->cur_iocbq.cmd_flag |= LPFC_IO_FCP; 295 296 psb->fcp_cmnd = psb->data; 297 psb->fcp_rsp = psb->data + sizeof(struct fcp_cmnd); 298 psb->dma_sgl = psb->data + sizeof(struct fcp_cmnd) + 299 sizeof(struct fcp_rsp); 300 301 /* Initialize local short-hand pointers. */ 302 bpl = (struct ulp_bde64 *)psb->dma_sgl; 303 pdma_phys_fcp_cmd = psb->dma_handle; 304 pdma_phys_fcp_rsp = psb->dma_handle + sizeof(struct fcp_cmnd); 305 pdma_phys_sgl = psb->dma_handle + sizeof(struct fcp_cmnd) + 306 sizeof(struct fcp_rsp); 307 308 /* 309 * The first two bdes are the FCP_CMD and FCP_RSP. The balance 310 * are sg list bdes. Initialize the first two and leave the 311 * rest for queuecommand. 312 */ 313 bpl[0].addrHigh = le32_to_cpu(putPaddrHigh(pdma_phys_fcp_cmd)); 314 bpl[0].addrLow = le32_to_cpu(putPaddrLow(pdma_phys_fcp_cmd)); 315 bpl[0].tus.f.bdeSize = sizeof(struct fcp_cmnd); 316 bpl[0].tus.f.bdeFlags = BUFF_TYPE_BDE_64; 317 bpl[0].tus.w = le32_to_cpu(bpl[0].tus.w); 318 319 /* Setup the physical region for the FCP RSP */ 320 bpl[1].addrHigh = le32_to_cpu(putPaddrHigh(pdma_phys_fcp_rsp)); 321 bpl[1].addrLow = le32_to_cpu(putPaddrLow(pdma_phys_fcp_rsp)); 322 bpl[1].tus.f.bdeSize = sizeof(struct fcp_rsp); 323 bpl[1].tus.f.bdeFlags = BUFF_TYPE_BDE_64; 324 bpl[1].tus.w = le32_to_cpu(bpl[1].tus.w); 325 326 /* 327 * Since the IOCB for the FCP I/O is built into this 328 * lpfc_scsi_buf, initialize it with all known data now. 329 */ 330 iocb = &psb->cur_iocbq.iocb; 331 iocb->un.fcpi64.bdl.ulpIoTag32 = 0; 332 if ((phba->sli_rev == 3) && 333 !(phba->sli3_options & LPFC_SLI3_BG_ENABLED)) { 334 /* fill in immediate fcp command BDE */ 335 iocb->un.fcpi64.bdl.bdeFlags = BUFF_TYPE_BDE_IMMED; 336 iocb->un.fcpi64.bdl.bdeSize = sizeof(struct fcp_cmnd); 337 iocb->un.fcpi64.bdl.addrLow = offsetof(IOCB_t, 338 unsli3.fcp_ext.icd); 339 iocb->un.fcpi64.bdl.addrHigh = 0; 340 iocb->ulpBdeCount = 0; 341 iocb->ulpLe = 0; 342 /* fill in response BDE */ 343 iocb->unsli3.fcp_ext.rbde.tus.f.bdeFlags = 344 BUFF_TYPE_BDE_64; 345 iocb->unsli3.fcp_ext.rbde.tus.f.bdeSize = 346 sizeof(struct fcp_rsp); 347 iocb->unsli3.fcp_ext.rbde.addrLow = 348 putPaddrLow(pdma_phys_fcp_rsp); 349 iocb->unsli3.fcp_ext.rbde.addrHigh = 350 putPaddrHigh(pdma_phys_fcp_rsp); 351 } else { 352 iocb->un.fcpi64.bdl.bdeFlags = BUFF_TYPE_BLP_64; 353 iocb->un.fcpi64.bdl.bdeSize = 354 (2 * sizeof(struct ulp_bde64)); 355 iocb->un.fcpi64.bdl.addrLow = 356 putPaddrLow(pdma_phys_sgl); 357 iocb->un.fcpi64.bdl.addrHigh = 358 putPaddrHigh(pdma_phys_sgl); 359 iocb->ulpBdeCount = 1; 360 iocb->ulpLe = 1; 361 } 362 iocb->ulpClass = CLASS3; 363 psb->status = IOSTAT_SUCCESS; 364 /* Put it back into the SCSI buffer list */ 365 psb->cur_iocbq.io_buf = psb; 366 spin_lock_init(&psb->buf_lock); 367 lpfc_release_scsi_buf_s3(phba, psb); 368 369 } 370 371 return bcnt; 372} 373 374/** 375 * lpfc_sli4_vport_delete_fcp_xri_aborted -Remove all ndlp references for vport 376 * @vport: pointer to lpfc vport data structure. 377 * 378 * This routine is invoked by the vport cleanup for deletions and the cleanup 379 * for an ndlp on removal. 380 **/ 381void 382lpfc_sli4_vport_delete_fcp_xri_aborted(struct lpfc_vport *vport) 383{ 384 struct lpfc_hba *phba = vport->phba; 385 struct lpfc_io_buf *psb, *next_psb; 386 struct lpfc_sli4_hdw_queue *qp; 387 unsigned long iflag = 0; 388 int idx; 389 390 if (!(vport->cfg_enable_fc4_type & LPFC_ENABLE_FCP)) 391 return; 392 393 /* may be called before queues established if hba_setup fails */ 394 if (!phba->sli4_hba.hdwq) 395 return; 396 397 spin_lock_irqsave(&phba->hbalock, iflag); 398 for (idx = 0; idx < phba->cfg_hdw_queue; idx++) { 399 qp = &phba->sli4_hba.hdwq[idx]; 400 401 spin_lock(&qp->abts_io_buf_list_lock); 402 list_for_each_entry_safe(psb, next_psb, 403 &qp->lpfc_abts_io_buf_list, list) { 404 if (psb->cur_iocbq.cmd_flag & LPFC_IO_NVME) 405 continue; 406 407 if (psb->rdata && psb->rdata->pnode && 408 psb->rdata->pnode->vport == vport) 409 psb->rdata = NULL; 410 } 411 spin_unlock(&qp->abts_io_buf_list_lock); 412 } 413 spin_unlock_irqrestore(&phba->hbalock, iflag); 414} 415 416/** 417 * lpfc_sli4_io_xri_aborted - Fast-path process of fcp xri abort 418 * @phba: pointer to lpfc hba data structure. 419 * @axri: pointer to the fcp xri abort wcqe structure. 420 * @idx: index into hdwq 421 * 422 * This routine is invoked by the worker thread to process a SLI4 fast-path 423 * FCP or NVME aborted xri. 424 **/ 425void 426lpfc_sli4_io_xri_aborted(struct lpfc_hba *phba, 427 struct sli4_wcqe_xri_aborted *axri, int idx) 428{ 429 u16 xri = 0; 430 u16 rxid = 0; 431 struct lpfc_io_buf *psb, *next_psb; 432 struct lpfc_sli4_hdw_queue *qp; 433 unsigned long iflag = 0; 434 struct lpfc_iocbq *iocbq; 435 int i; 436 struct lpfc_nodelist *ndlp; 437 int rrq_empty = 0; 438 struct lpfc_sli_ring *pring = phba->sli4_hba.els_wq->pring; 439 struct scsi_cmnd *cmd; 440 int offline = 0; 441 442 if (!(phba->cfg_enable_fc4_type & LPFC_ENABLE_FCP)) 443 return; 444 offline = pci_channel_offline(phba->pcidev); 445 if (!offline) { 446 xri = bf_get(lpfc_wcqe_xa_xri, axri); 447 rxid = bf_get(lpfc_wcqe_xa_remote_xid, axri); 448 } 449 qp = &phba->sli4_hba.hdwq[idx]; 450 spin_lock_irqsave(&phba->hbalock, iflag); 451 spin_lock(&qp->abts_io_buf_list_lock); 452 list_for_each_entry_safe(psb, next_psb, 453 &qp->lpfc_abts_io_buf_list, list) { 454 if (offline) 455 xri = psb->cur_iocbq.sli4_xritag; 456 if (psb->cur_iocbq.sli4_xritag == xri) { 457 list_del_init(&psb->list); 458 psb->flags &= ~LPFC_SBUF_XBUSY; 459 psb->status = IOSTAT_SUCCESS; 460 if (psb->cur_iocbq.cmd_flag & LPFC_IO_NVME) { 461 qp->abts_nvme_io_bufs--; 462 spin_unlock(&qp->abts_io_buf_list_lock); 463 spin_unlock_irqrestore(&phba->hbalock, iflag); 464 if (!offline) { 465 lpfc_sli4_nvme_xri_aborted(phba, axri, 466 psb); 467 return; 468 } 469 lpfc_sli4_nvme_pci_offline_aborted(phba, psb); 470 spin_lock_irqsave(&phba->hbalock, iflag); 471 spin_lock(&qp->abts_io_buf_list_lock); 472 continue; 473 } 474 qp->abts_scsi_io_bufs--; 475 spin_unlock(&qp->abts_io_buf_list_lock); 476 477 if (psb->rdata && psb->rdata->pnode) 478 ndlp = psb->rdata->pnode; 479 else 480 ndlp = NULL; 481 spin_unlock_irqrestore(&phba->hbalock, iflag); 482 483 spin_lock_irqsave(&phba->rrq_list_lock, iflag); 484 rrq_empty = list_empty(&phba->active_rrq_list); 485 spin_unlock_irqrestore(&phba->rrq_list_lock, iflag); 486 if (ndlp && !offline) { 487 lpfc_set_rrq_active(phba, ndlp, 488 psb->cur_iocbq.sli4_lxritag, rxid, 1); 489 lpfc_sli4_abts_err_handler(phba, ndlp, axri); 490 } 491 492 if (phba->cfg_fcp_wait_abts_rsp || offline) { 493 spin_lock_irqsave(&psb->buf_lock, iflag); 494 cmd = psb->pCmd; 495 psb->pCmd = NULL; 496 spin_unlock_irqrestore(&psb->buf_lock, iflag); 497 498 /* The sdev is not guaranteed to be valid post 499 * scsi_done upcall. 500 */ 501 if (cmd) 502 scsi_done(cmd); 503 504 /* 505 * We expect there is an abort thread waiting 506 * for command completion wake up the thread. 507 */ 508 spin_lock_irqsave(&psb->buf_lock, iflag); 509 psb->cur_iocbq.cmd_flag &= 510 ~LPFC_DRIVER_ABORTED; 511 if (psb->waitq) 512 wake_up(psb->waitq); 513 spin_unlock_irqrestore(&psb->buf_lock, iflag); 514 } 515 516 lpfc_release_scsi_buf_s4(phba, psb); 517 if (rrq_empty) 518 lpfc_worker_wake_up(phba); 519 if (!offline) 520 return; 521 spin_lock_irqsave(&phba->hbalock, iflag); 522 spin_lock(&qp->abts_io_buf_list_lock); 523 continue; 524 } 525 } 526 spin_unlock(&qp->abts_io_buf_list_lock); 527 if (!offline) { 528 for (i = 1; i <= phba->sli.last_iotag; i++) { 529 iocbq = phba->sli.iocbq_lookup[i]; 530 531 if (!(iocbq->cmd_flag & LPFC_IO_FCP) || 532 (iocbq->cmd_flag & LPFC_IO_LIBDFC)) 533 continue; 534 if (iocbq->sli4_xritag != xri) 535 continue; 536 psb = container_of(iocbq, struct lpfc_io_buf, cur_iocbq); 537 psb->flags &= ~LPFC_SBUF_XBUSY; 538 spin_unlock_irqrestore(&phba->hbalock, iflag); 539 if (test_bit(HBA_SETUP, &phba->hba_flag) && 540 !list_empty(&pring->txq)) 541 lpfc_worker_wake_up(phba); 542 return; 543 } 544 } 545 spin_unlock_irqrestore(&phba->hbalock, iflag); 546} 547 548/** 549 * lpfc_get_scsi_buf_s3 - Get a scsi buffer from lpfc_scsi_buf_list of the HBA 550 * @phba: The HBA for which this call is being executed. 551 * @ndlp: pointer to a node-list data structure. 552 * @cmnd: Pointer to scsi_cmnd data structure. 553 * 554 * This routine removes a scsi buffer from head of @phba lpfc_scsi_buf_list list 555 * and returns to caller. 556 * 557 * Return codes: 558 * NULL - Error 559 * Pointer to lpfc_scsi_buf - Success 560 **/ 561static struct lpfc_io_buf * 562lpfc_get_scsi_buf_s3(struct lpfc_hba *phba, struct lpfc_nodelist *ndlp, 563 struct scsi_cmnd *cmnd) 564{ 565 struct lpfc_io_buf *lpfc_cmd = NULL; 566 struct list_head *scsi_buf_list_get = &phba->lpfc_scsi_buf_list_get; 567 unsigned long iflag = 0; 568 569 spin_lock_irqsave(&phba->scsi_buf_list_get_lock, iflag); 570 list_remove_head(scsi_buf_list_get, lpfc_cmd, struct lpfc_io_buf, 571 list); 572 if (!lpfc_cmd) { 573 spin_lock(&phba->scsi_buf_list_put_lock); 574 list_splice(&phba->lpfc_scsi_buf_list_put, 575 &phba->lpfc_scsi_buf_list_get); 576 INIT_LIST_HEAD(&phba->lpfc_scsi_buf_list_put); 577 list_remove_head(scsi_buf_list_get, lpfc_cmd, 578 struct lpfc_io_buf, list); 579 spin_unlock(&phba->scsi_buf_list_put_lock); 580 } 581 spin_unlock_irqrestore(&phba->scsi_buf_list_get_lock, iflag); 582 583 if (lpfc_ndlp_check_qdepth(phba, ndlp) && lpfc_cmd) { 584 atomic_inc(&ndlp->cmd_pending); 585 lpfc_cmd->flags |= LPFC_SBUF_BUMP_QDEPTH; 586 } 587 return lpfc_cmd; 588} 589/** 590 * lpfc_get_scsi_buf_s4 - Get a scsi buffer from io_buf_list of the HBA 591 * @phba: The HBA for which this call is being executed. 592 * @ndlp: pointer to a node-list data structure. 593 * @cmnd: Pointer to scsi_cmnd data structure. 594 * 595 * This routine removes a scsi buffer from head of @hdwq io_buf_list 596 * and returns to caller. 597 * 598 * Return codes: 599 * NULL - Error 600 * Pointer to lpfc_scsi_buf - Success 601 **/ 602static struct lpfc_io_buf * 603lpfc_get_scsi_buf_s4(struct lpfc_hba *phba, struct lpfc_nodelist *ndlp, 604 struct scsi_cmnd *cmnd) 605{ 606 struct lpfc_io_buf *lpfc_cmd; 607 struct lpfc_sli4_hdw_queue *qp; 608 struct sli4_sge_le *sgl; 609 dma_addr_t pdma_phys_fcp_rsp; 610 dma_addr_t pdma_phys_fcp_cmd; 611 uint32_t cpu, idx; 612 int tag; 613 struct fcp_cmd_rsp_buf *tmp = NULL; 614 615 cpu = raw_smp_processor_id(); 616 if (cmnd && phba->cfg_fcp_io_sched == LPFC_FCP_SCHED_BY_HDWQ) { 617 tag = blk_mq_unique_tag(scsi_cmd_to_rq(cmnd)); 618 idx = blk_mq_unique_tag_to_hwq(tag); 619 } else { 620 idx = phba->sli4_hba.cpu_map[cpu].hdwq; 621 } 622 623 lpfc_cmd = lpfc_get_io_buf(phba, ndlp, idx, 624 !phba->cfg_xri_rebalancing); 625 if (!lpfc_cmd) { 626 qp = &phba->sli4_hba.hdwq[idx]; 627 qp->empty_io_bufs++; 628 return NULL; 629 } 630 631 /* Setup key fields in buffer that may have been changed 632 * if other protocols used this buffer. 633 */ 634 lpfc_cmd->cur_iocbq.cmd_flag = LPFC_IO_FCP; 635 lpfc_cmd->prot_seg_cnt = 0; 636 lpfc_cmd->seg_cnt = 0; 637 lpfc_cmd->timeout = 0; 638 lpfc_cmd->flags = 0; 639 lpfc_cmd->start_time = jiffies; 640 lpfc_cmd->waitq = NULL; 641 lpfc_cmd->cpu = cpu; 642#ifdef CONFIG_SCSI_LPFC_DEBUG_FS 643 lpfc_cmd->prot_data_type = 0; 644#endif 645 tmp = lpfc_get_cmd_rsp_buf_per_hdwq(phba, lpfc_cmd); 646 if (!tmp) { 647 lpfc_release_io_buf(phba, lpfc_cmd, lpfc_cmd->hdwq); 648 return NULL; 649 } 650 651 lpfc_cmd->fcp_cmnd = tmp->fcp_cmnd; 652 lpfc_cmd->fcp_rsp = tmp->fcp_rsp; 653 654 /* 655 * The first two SGEs are the FCP_CMD and FCP_RSP. 656 * The balance are sg list bdes. Initialize the 657 * first two and leave the rest for queuecommand. 658 */ 659 sgl = (struct sli4_sge_le *)lpfc_cmd->dma_sgl; 660 pdma_phys_fcp_cmd = tmp->fcp_cmd_rsp_dma_handle; 661 sgl->addr_hi = cpu_to_le32(putPaddrHigh(pdma_phys_fcp_cmd)); 662 sgl->addr_lo = cpu_to_le32(putPaddrLow(pdma_phys_fcp_cmd)); 663 bf_set_le32(lpfc_sli4_sge_last, sgl, 0); 664 if (cmnd && cmnd->cmd_len > LPFC_FCP_CDB_LEN) 665 sgl->sge_len = cpu_to_le32(sizeof(struct fcp_cmnd32)); 666 else 667 sgl->sge_len = cpu_to_le32(sizeof(struct fcp_cmnd)); 668 669 sgl++; 670 671 /* Setup the physical region for the FCP RSP */ 672 pdma_phys_fcp_rsp = pdma_phys_fcp_cmd + sizeof(struct fcp_cmnd32); 673 sgl->addr_hi = cpu_to_le32(putPaddrHigh(pdma_phys_fcp_rsp)); 674 sgl->addr_lo = cpu_to_le32(putPaddrLow(pdma_phys_fcp_rsp)); 675 bf_set_le32(lpfc_sli4_sge_last, sgl, 1); 676 sgl->sge_len = cpu_to_le32(sizeof(struct fcp_rsp)); 677 678 if (lpfc_ndlp_check_qdepth(phba, ndlp)) { 679 atomic_inc(&ndlp->cmd_pending); 680 lpfc_cmd->flags |= LPFC_SBUF_BUMP_QDEPTH; 681 } 682 return lpfc_cmd; 683} 684/** 685 * lpfc_get_scsi_buf - Get a scsi buffer from lpfc_scsi_buf_list of the HBA 686 * @phba: The HBA for which this call is being executed. 687 * @ndlp: pointer to a node-list data structure. 688 * @cmnd: Pointer to scsi_cmnd data structure. 689 * 690 * This routine removes a scsi buffer from head of @phba lpfc_scsi_buf_list list 691 * and returns to caller. 692 * 693 * Return codes: 694 * NULL - Error 695 * Pointer to lpfc_scsi_buf - Success 696 **/ 697static struct lpfc_io_buf* 698lpfc_get_scsi_buf(struct lpfc_hba *phba, struct lpfc_nodelist *ndlp, 699 struct scsi_cmnd *cmnd) 700{ 701 return phba->lpfc_get_scsi_buf(phba, ndlp, cmnd); 702} 703 704/** 705 * lpfc_release_scsi_buf_s3 - Return a scsi buffer back to hba scsi buf list 706 * @phba: The Hba for which this call is being executed. 707 * @psb: The scsi buffer which is being released. 708 * 709 * This routine releases @psb scsi buffer by adding it to tail of @phba 710 * lpfc_scsi_buf_list list. 711 **/ 712static void 713lpfc_release_scsi_buf_s3(struct lpfc_hba *phba, struct lpfc_io_buf *psb) 714{ 715 unsigned long iflag = 0; 716 717 psb->seg_cnt = 0; 718 psb->prot_seg_cnt = 0; 719 720 spin_lock_irqsave(&phba->scsi_buf_list_put_lock, iflag); 721 psb->pCmd = NULL; 722 psb->cur_iocbq.cmd_flag = LPFC_IO_FCP; 723 list_add_tail(&psb->list, &phba->lpfc_scsi_buf_list_put); 724 spin_unlock_irqrestore(&phba->scsi_buf_list_put_lock, iflag); 725} 726 727/** 728 * lpfc_release_scsi_buf_s4: Return a scsi buffer back to hba scsi buf list. 729 * @phba: The Hba for which this call is being executed. 730 * @psb: The scsi buffer which is being released. 731 * 732 * This routine releases @psb scsi buffer by adding it to tail of @hdwq 733 * io_buf_list list. For SLI4 XRI's are tied to the scsi buffer 734 * and cannot be reused for at least RA_TOV amount of time if it was 735 * aborted. 736 **/ 737static void 738lpfc_release_scsi_buf_s4(struct lpfc_hba *phba, struct lpfc_io_buf *psb) 739{ 740 struct lpfc_sli4_hdw_queue *qp; 741 unsigned long iflag = 0; 742 743 psb->seg_cnt = 0; 744 psb->prot_seg_cnt = 0; 745 746 qp = psb->hdwq; 747 if (psb->flags & LPFC_SBUF_XBUSY) { 748 spin_lock_irqsave(&qp->abts_io_buf_list_lock, iflag); 749 if (!phba->cfg_fcp_wait_abts_rsp) 750 psb->pCmd = NULL; 751 list_add_tail(&psb->list, &qp->lpfc_abts_io_buf_list); 752 qp->abts_scsi_io_bufs++; 753 spin_unlock_irqrestore(&qp->abts_io_buf_list_lock, iflag); 754 } else { 755 lpfc_release_io_buf(phba, (struct lpfc_io_buf *)psb, qp); 756 } 757} 758 759/** 760 * lpfc_release_scsi_buf: Return a scsi buffer back to hba scsi buf list. 761 * @phba: The Hba for which this call is being executed. 762 * @psb: The scsi buffer which is being released. 763 * 764 * This routine releases @psb scsi buffer by adding it to tail of @phba 765 * lpfc_scsi_buf_list list. 766 **/ 767static void 768lpfc_release_scsi_buf(struct lpfc_hba *phba, struct lpfc_io_buf *psb) 769{ 770 if ((psb->flags & LPFC_SBUF_BUMP_QDEPTH) && psb->ndlp) 771 atomic_dec(&psb->ndlp->cmd_pending); 772 773 psb->flags &= ~LPFC_SBUF_BUMP_QDEPTH; 774 phba->lpfc_release_scsi_buf(phba, psb); 775} 776 777/** 778 * lpfc_fcpcmd_to_iocb - copy the fcp_cmd data into the IOCB 779 * @data: A pointer to the immediate command data portion of the IOCB. 780 * @fcp_cmnd: The FCP Command that is provided by the SCSI layer. 781 * 782 * The routine copies the entire FCP command from @fcp_cmnd to @data while 783 * byte swapping the data to big endian format for transmission on the wire. 784 **/ 785static void 786lpfc_fcpcmd_to_iocb(u8 *data, struct fcp_cmnd *fcp_cmnd) 787{ 788 int i, j; 789 790 for (i = 0, j = 0; i < sizeof(struct fcp_cmnd); 791 i += sizeof(uint32_t), j++) { 792 ((uint32_t *)data)[j] = cpu_to_be32(((uint32_t *)fcp_cmnd)[j]); 793 } 794} 795 796/** 797 * lpfc_scsi_prep_dma_buf_s3 - DMA mapping for scsi buffer to SLI3 IF spec 798 * @phba: The Hba for which this call is being executed. 799 * @lpfc_cmd: The scsi buffer which is going to be mapped. 800 * 801 * This routine does the pci dma mapping for scatter-gather list of scsi cmnd 802 * field of @lpfc_cmd for device with SLI-3 interface spec. This routine scans 803 * through sg elements and format the bde. This routine also initializes all 804 * IOCB fields which are dependent on scsi command request buffer. 805 * 806 * Return codes: 807 * 1 - Error 808 * 0 - Success 809 **/ 810static int 811lpfc_scsi_prep_dma_buf_s3(struct lpfc_hba *phba, struct lpfc_io_buf *lpfc_cmd) 812{ 813 struct scsi_cmnd *scsi_cmnd = lpfc_cmd->pCmd; 814 struct scatterlist *sgel = NULL; 815 struct fcp_cmnd *fcp_cmnd = lpfc_cmd->fcp_cmnd; 816 struct ulp_bde64 *bpl = (struct ulp_bde64 *)lpfc_cmd->dma_sgl; 817 struct lpfc_iocbq *iocbq = &lpfc_cmd->cur_iocbq; 818 IOCB_t *iocb_cmd = &lpfc_cmd->cur_iocbq.iocb; 819 struct ulp_bde64 *data_bde = iocb_cmd->unsli3.fcp_ext.dbde; 820 dma_addr_t physaddr; 821 uint32_t num_bde = 0; 822 int nseg, datadir = scsi_cmnd->sc_data_direction; 823 824 /* 825 * There are three possibilities here - use scatter-gather segment, use 826 * the single mapping, or neither. Start the lpfc command prep by 827 * bumping the bpl beyond the fcp_cmnd and fcp_rsp regions to the first 828 * data bde entry. 829 */ 830 bpl += 2; 831 if (scsi_sg_count(scsi_cmnd)) { 832 /* 833 * The driver stores the segment count returned from dma_map_sg 834 * because this a count of dma-mappings used to map the use_sg 835 * pages. They are not guaranteed to be the same for those 836 * architectures that implement an IOMMU. 837 */ 838 839 nseg = dma_map_sg(&phba->pcidev->dev, scsi_sglist(scsi_cmnd), 840 scsi_sg_count(scsi_cmnd), datadir); 841 if (unlikely(!nseg)) 842 return 1; 843 844 lpfc_cmd->seg_cnt = nseg; 845 if (lpfc_cmd->seg_cnt > phba->cfg_sg_seg_cnt) { 846 lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT, 847 "9064 BLKGRD: %s: Too many sg segments" 848 " from dma_map_sg. Config %d, seg_cnt" 849 " %d\n", __func__, phba->cfg_sg_seg_cnt, 850 lpfc_cmd->seg_cnt); 851 WARN_ON_ONCE(lpfc_cmd->seg_cnt > phba->cfg_sg_seg_cnt); 852 lpfc_cmd->seg_cnt = 0; 853 scsi_dma_unmap(scsi_cmnd); 854 return 2; 855 } 856 857 /* 858 * The driver established a maximum scatter-gather segment count 859 * during probe that limits the number of sg elements in any 860 * single scsi command. Just run through the seg_cnt and format 861 * the bde's. 862 * When using SLI-3 the driver will try to fit all the BDEs into 863 * the IOCB. If it can't then the BDEs get added to a BPL as it 864 * does for SLI-2 mode. 865 */ 866 scsi_for_each_sg(scsi_cmnd, sgel, nseg, num_bde) { 867 physaddr = sg_dma_address(sgel); 868 if (phba->sli_rev == 3 && 869 !(phba->sli3_options & LPFC_SLI3_BG_ENABLED) && 870 !(iocbq->cmd_flag & DSS_SECURITY_OP) && 871 nseg <= LPFC_EXT_DATA_BDE_COUNT) { 872 data_bde->tus.f.bdeFlags = BUFF_TYPE_BDE_64; 873 data_bde->tus.f.bdeSize = sg_dma_len(sgel); 874 data_bde->addrLow = putPaddrLow(physaddr); 875 data_bde->addrHigh = putPaddrHigh(physaddr); 876 data_bde++; 877 } else { 878 bpl->tus.f.bdeFlags = BUFF_TYPE_BDE_64; 879 bpl->tus.f.bdeSize = sg_dma_len(sgel); 880 bpl->tus.w = le32_to_cpu(bpl->tus.w); 881 bpl->addrLow = 882 le32_to_cpu(putPaddrLow(physaddr)); 883 bpl->addrHigh = 884 le32_to_cpu(putPaddrHigh(physaddr)); 885 bpl++; 886 } 887 } 888 } 889 890 /* 891 * Finish initializing those IOCB fields that are dependent on the 892 * scsi_cmnd request_buffer. Note that for SLI-2 the bdeSize is 893 * explicitly reinitialized and for SLI-3 the extended bde count is 894 * explicitly reinitialized since all iocb memory resources are reused. 895 */ 896 if (phba->sli_rev == 3 && 897 !(phba->sli3_options & LPFC_SLI3_BG_ENABLED) && 898 !(iocbq->cmd_flag & DSS_SECURITY_OP)) { 899 if (num_bde > LPFC_EXT_DATA_BDE_COUNT) { 900 /* 901 * The extended IOCB format can only fit 3 BDE or a BPL. 902 * This I/O has more than 3 BDE so the 1st data bde will 903 * be a BPL that is filled in here. 904 */ 905 physaddr = lpfc_cmd->dma_handle; 906 data_bde->tus.f.bdeFlags = BUFF_TYPE_BLP_64; 907 data_bde->tus.f.bdeSize = (num_bde * 908 sizeof(struct ulp_bde64)); 909 physaddr += (sizeof(struct fcp_cmnd) + 910 sizeof(struct fcp_rsp) + 911 (2 * sizeof(struct ulp_bde64))); 912 data_bde->addrHigh = putPaddrHigh(physaddr); 913 data_bde->addrLow = putPaddrLow(physaddr); 914 /* ebde count includes the response bde and data bpl */ 915 iocb_cmd->unsli3.fcp_ext.ebde_count = 2; 916 } else { 917 /* ebde count includes the response bde and data bdes */ 918 iocb_cmd->unsli3.fcp_ext.ebde_count = (num_bde + 1); 919 } 920 } else { 921 iocb_cmd->un.fcpi64.bdl.bdeSize = 922 ((num_bde + 2) * sizeof(struct ulp_bde64)); 923 iocb_cmd->unsli3.fcp_ext.ebde_count = (num_bde + 1); 924 } 925 fcp_cmnd->fcpDl = cpu_to_be32(scsi_bufflen(scsi_cmnd)); 926 927 /* 928 * Due to difference in data length between DIF/non-DIF paths, 929 * we need to set word 4 of IOCB here 930 */ 931 iocb_cmd->un.fcpi.fcpi_parm = scsi_bufflen(scsi_cmnd); 932 lpfc_fcpcmd_to_iocb(iocb_cmd->unsli3.fcp_ext.icd, fcp_cmnd); 933 return 0; 934} 935 936#ifdef CONFIG_SCSI_LPFC_DEBUG_FS 937 938/* Return BG_ERR_INIT if error injection is detected by Initiator */ 939#define BG_ERR_INIT 0x1 940/* Return BG_ERR_TGT if error injection is detected by Target */ 941#define BG_ERR_TGT 0x2 942/* Return BG_ERR_SWAP if swapping CSUM<-->CRC is required for error injection */ 943#define BG_ERR_SWAP 0x10 944/* 945 * Return BG_ERR_CHECK if disabling Guard/Ref/App checking is required for 946 * error injection 947 */ 948#define BG_ERR_CHECK 0x20 949 950/** 951 * lpfc_bg_err_inject - Determine if we should inject an error 952 * @phba: The Hba for which this call is being executed. 953 * @sc: The SCSI command to examine 954 * @reftag: (out) BlockGuard reference tag for transmitted data 955 * @apptag: (out) BlockGuard application tag for transmitted data 956 * @new_guard: (in) Value to replace CRC with if needed 957 * 958 * Returns BG_ERR_* bit mask or 0 if request ignored 959 **/ 960static int 961lpfc_bg_err_inject(struct lpfc_hba *phba, struct scsi_cmnd *sc, 962 uint32_t *reftag, uint16_t *apptag, uint32_t new_guard) 963{ 964 struct scatterlist *sgpe; /* s/g prot entry */ 965 struct lpfc_io_buf *lpfc_cmd = NULL; 966 struct scsi_dif_tuple *src = NULL; 967 struct lpfc_nodelist *ndlp; 968 struct lpfc_rport_data *rdata; 969 uint32_t op = scsi_get_prot_op(sc); 970 uint32_t blksize; 971 uint32_t numblks; 972 u32 lba; 973 int rc = 0; 974 int blockoff = 0; 975 976 if (op == SCSI_PROT_NORMAL) 977 return 0; 978 979 sgpe = scsi_prot_sglist(sc); 980 lba = scsi_prot_ref_tag(sc); 981 982 /* First check if we need to match the LBA */ 983 if (phba->lpfc_injerr_lba != LPFC_INJERR_LBA_OFF) { 984 blksize = scsi_prot_interval(sc); 985 numblks = (scsi_bufflen(sc) + blksize - 1) / blksize; 986 987 /* Make sure we have the right LBA if one is specified */ 988 if (phba->lpfc_injerr_lba < (u64)lba || 989 (phba->lpfc_injerr_lba >= (u64)(lba + numblks))) 990 return 0; 991 if (sgpe) { 992 blockoff = phba->lpfc_injerr_lba - (u64)lba; 993 numblks = sg_dma_len(sgpe) / 994 sizeof(struct scsi_dif_tuple); 995 if (numblks < blockoff) 996 blockoff = numblks; 997 } 998 } 999 1000 /* Next check if we need to match the remote NPortID or WWPN */ 1001 rdata = lpfc_rport_data_from_scsi_device(sc->device); 1002 if (rdata && rdata->pnode) { 1003 ndlp = rdata->pnode; 1004 1005 /* Make sure we have the right NPortID if one is specified */ 1006 if (phba->lpfc_injerr_nportid && 1007 (phba->lpfc_injerr_nportid != ndlp->nlp_DID)) 1008 return 0; 1009 1010 /* 1011 * Make sure we have the right WWPN if one is specified. 1012 * wwn[0] should be a non-zero NAA in a good WWPN. 1013 */ 1014 if (phba->lpfc_injerr_wwpn.u.wwn[0] && 1015 (memcmp(&ndlp->nlp_portname, &phba->lpfc_injerr_wwpn, 1016 sizeof(struct lpfc_name)) != 0)) 1017 return 0; 1018 } 1019 1020 /* Setup a ptr to the protection data if the SCSI host provides it */ 1021 if (sgpe) { 1022 src = (struct scsi_dif_tuple *)sg_virt(sgpe); 1023 src += blockoff; 1024 lpfc_cmd = (struct lpfc_io_buf *)sc->host_scribble; 1025 } 1026 1027 /* Should we change the Reference Tag */ 1028 if (reftag) { 1029 if (phba->lpfc_injerr_wref_cnt) { 1030 switch (op) { 1031 case SCSI_PROT_WRITE_PASS: 1032 if (src) { 1033 /* 1034 * For WRITE_PASS, force the error 1035 * to be sent on the wire. It should 1036 * be detected by the Target. 1037 * If blockoff != 0 error will be 1038 * inserted in middle of the IO. 1039 */ 1040 1041 lpfc_printf_log(phba, KERN_ERR, 1042 LOG_TRACE_EVENT, 1043 "9076 BLKGRD: Injecting reftag error: " 1044 "write lba x%lx + x%x oldrefTag x%x\n", 1045 (unsigned long)lba, blockoff, 1046 be32_to_cpu(src->ref_tag)); 1047 1048 /* 1049 * Save the old ref_tag so we can 1050 * restore it on completion. 1051 */ 1052 if (lpfc_cmd) { 1053 lpfc_cmd->prot_data_type = 1054 LPFC_INJERR_REFTAG; 1055 lpfc_cmd->prot_data_segment = 1056 src; 1057 lpfc_cmd->prot_data = 1058 src->ref_tag; 1059 } 1060 src->ref_tag = cpu_to_be32(0xDEADBEEF); 1061 phba->lpfc_injerr_wref_cnt--; 1062 if (phba->lpfc_injerr_wref_cnt == 0) { 1063 phba->lpfc_injerr_nportid = 0; 1064 phba->lpfc_injerr_lba = 1065 LPFC_INJERR_LBA_OFF; 1066 memset(&phba->lpfc_injerr_wwpn, 1067 0, sizeof(struct lpfc_name)); 1068 } 1069 rc = BG_ERR_TGT | BG_ERR_CHECK; 1070 1071 break; 1072 } 1073 fallthrough; 1074 case SCSI_PROT_WRITE_INSERT: 1075 /* 1076 * For WRITE_INSERT, force the error 1077 * to be sent on the wire. It should be 1078 * detected by the Target. 1079 */ 1080 /* DEADBEEF will be the reftag on the wire */ 1081 *reftag = 0xDEADBEEF; 1082 phba->lpfc_injerr_wref_cnt--; 1083 if (phba->lpfc_injerr_wref_cnt == 0) { 1084 phba->lpfc_injerr_nportid = 0; 1085 phba->lpfc_injerr_lba = 1086 LPFC_INJERR_LBA_OFF; 1087 memset(&phba->lpfc_injerr_wwpn, 1088 0, sizeof(struct lpfc_name)); 1089 } 1090 rc = BG_ERR_TGT | BG_ERR_CHECK; 1091 1092 lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT, 1093 "9078 BLKGRD: Injecting reftag error: " 1094 "write lba x%lx\n", (unsigned long)lba); 1095 break; 1096 case SCSI_PROT_WRITE_STRIP: 1097 /* 1098 * For WRITE_STRIP and WRITE_PASS, 1099 * force the error on data 1100 * being copied from SLI-Host to SLI-Port. 1101 */ 1102 *reftag = 0xDEADBEEF; 1103 phba->lpfc_injerr_wref_cnt--; 1104 if (phba->lpfc_injerr_wref_cnt == 0) { 1105 phba->lpfc_injerr_nportid = 0; 1106 phba->lpfc_injerr_lba = 1107 LPFC_INJERR_LBA_OFF; 1108 memset(&phba->lpfc_injerr_wwpn, 1109 0, sizeof(struct lpfc_name)); 1110 } 1111 rc = BG_ERR_INIT; 1112 1113 lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT, 1114 "9077 BLKGRD: Injecting reftag error: " 1115 "write lba x%lx\n", (unsigned long)lba); 1116 break; 1117 } 1118 } 1119 if (phba->lpfc_injerr_rref_cnt) { 1120 switch (op) { 1121 case SCSI_PROT_READ_INSERT: 1122 case SCSI_PROT_READ_STRIP: 1123 case SCSI_PROT_READ_PASS: 1124 /* 1125 * For READ_STRIP and READ_PASS, force the 1126 * error on data being read off the wire. It 1127 * should force an IO error to the driver. 1128 */ 1129 *reftag = 0xDEADBEEF; 1130 phba->lpfc_injerr_rref_cnt--; 1131 if (phba->lpfc_injerr_rref_cnt == 0) { 1132 phba->lpfc_injerr_nportid = 0; 1133 phba->lpfc_injerr_lba = 1134 LPFC_INJERR_LBA_OFF; 1135 memset(&phba->lpfc_injerr_wwpn, 1136 0, sizeof(struct lpfc_name)); 1137 } 1138 rc = BG_ERR_INIT; 1139 1140 lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT, 1141 "9079 BLKGRD: Injecting reftag error: " 1142 "read lba x%lx\n", (unsigned long)lba); 1143 break; 1144 } 1145 } 1146 } 1147 1148 /* Should we change the Application Tag */ 1149 if (apptag) { 1150 if (phba->lpfc_injerr_wapp_cnt) { 1151 switch (op) { 1152 case SCSI_PROT_WRITE_PASS: 1153 if (src) { 1154 /* 1155 * For WRITE_PASS, force the error 1156 * to be sent on the wire. It should 1157 * be detected by the Target. 1158 * If blockoff != 0 error will be 1159 * inserted in middle of the IO. 1160 */ 1161 1162 lpfc_printf_log(phba, KERN_ERR, 1163 LOG_TRACE_EVENT, 1164 "9080 BLKGRD: Injecting apptag error: " 1165 "write lba x%lx + x%x oldappTag x%x\n", 1166 (unsigned long)lba, blockoff, 1167 be16_to_cpu(src->app_tag)); 1168 1169 /* 1170 * Save the old app_tag so we can 1171 * restore it on completion. 1172 */ 1173 if (lpfc_cmd) { 1174 lpfc_cmd->prot_data_type = 1175 LPFC_INJERR_APPTAG; 1176 lpfc_cmd->prot_data_segment = 1177 src; 1178 lpfc_cmd->prot_data = 1179 src->app_tag; 1180 } 1181 src->app_tag = cpu_to_be16(0xDEAD); 1182 phba->lpfc_injerr_wapp_cnt--; 1183 if (phba->lpfc_injerr_wapp_cnt == 0) { 1184 phba->lpfc_injerr_nportid = 0; 1185 phba->lpfc_injerr_lba = 1186 LPFC_INJERR_LBA_OFF; 1187 memset(&phba->lpfc_injerr_wwpn, 1188 0, sizeof(struct lpfc_name)); 1189 } 1190 rc = BG_ERR_TGT | BG_ERR_CHECK; 1191 break; 1192 } 1193 fallthrough; 1194 case SCSI_PROT_WRITE_INSERT: 1195 /* 1196 * For WRITE_INSERT, force the 1197 * error to be sent on the wire. It should be 1198 * detected by the Target. 1199 */ 1200 /* DEAD will be the apptag on the wire */ 1201 *apptag = 0xDEAD; 1202 phba->lpfc_injerr_wapp_cnt--; 1203 if (phba->lpfc_injerr_wapp_cnt == 0) { 1204 phba->lpfc_injerr_nportid = 0; 1205 phba->lpfc_injerr_lba = 1206 LPFC_INJERR_LBA_OFF; 1207 memset(&phba->lpfc_injerr_wwpn, 1208 0, sizeof(struct lpfc_name)); 1209 } 1210 rc = BG_ERR_TGT | BG_ERR_CHECK; 1211 1212 lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT, 1213 "0813 BLKGRD: Injecting apptag error: " 1214 "write lba x%lx\n", (unsigned long)lba); 1215 break; 1216 case SCSI_PROT_WRITE_STRIP: 1217 /* 1218 * For WRITE_STRIP and WRITE_PASS, 1219 * force the error on data 1220 * being copied from SLI-Host to SLI-Port. 1221 */ 1222 *apptag = 0xDEAD; 1223 phba->lpfc_injerr_wapp_cnt--; 1224 if (phba->lpfc_injerr_wapp_cnt == 0) { 1225 phba->lpfc_injerr_nportid = 0; 1226 phba->lpfc_injerr_lba = 1227 LPFC_INJERR_LBA_OFF; 1228 memset(&phba->lpfc_injerr_wwpn, 1229 0, sizeof(struct lpfc_name)); 1230 } 1231 rc = BG_ERR_INIT; 1232 1233 lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT, 1234 "0812 BLKGRD: Injecting apptag error: " 1235 "write lba x%lx\n", (unsigned long)lba); 1236 break; 1237 } 1238 } 1239 if (phba->lpfc_injerr_rapp_cnt) { 1240 switch (op) { 1241 case SCSI_PROT_READ_INSERT: 1242 case SCSI_PROT_READ_STRIP: 1243 case SCSI_PROT_READ_PASS: 1244 /* 1245 * For READ_STRIP and READ_PASS, force the 1246 * error on data being read off the wire. It 1247 * should force an IO error to the driver. 1248 */ 1249 *apptag = 0xDEAD; 1250 phba->lpfc_injerr_rapp_cnt--; 1251 if (phba->lpfc_injerr_rapp_cnt == 0) { 1252 phba->lpfc_injerr_nportid = 0; 1253 phba->lpfc_injerr_lba = 1254 LPFC_INJERR_LBA_OFF; 1255 memset(&phba->lpfc_injerr_wwpn, 1256 0, sizeof(struct lpfc_name)); 1257 } 1258 rc = BG_ERR_INIT; 1259 1260 lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT, 1261 "0814 BLKGRD: Injecting apptag error: " 1262 "read lba x%lx\n", (unsigned long)lba); 1263 break; 1264 } 1265 } 1266 } 1267 1268 1269 /* Should we change the Guard Tag */ 1270 if (new_guard) { 1271 if (phba->lpfc_injerr_wgrd_cnt) { 1272 switch (op) { 1273 case SCSI_PROT_WRITE_PASS: 1274 rc = BG_ERR_CHECK; 1275 fallthrough; 1276 1277 case SCSI_PROT_WRITE_INSERT: 1278 /* 1279 * For WRITE_INSERT, force the 1280 * error to be sent on the wire. It should be 1281 * detected by the Target. 1282 */ 1283 phba->lpfc_injerr_wgrd_cnt--; 1284 if (phba->lpfc_injerr_wgrd_cnt == 0) { 1285 phba->lpfc_injerr_nportid = 0; 1286 phba->lpfc_injerr_lba = 1287 LPFC_INJERR_LBA_OFF; 1288 memset(&phba->lpfc_injerr_wwpn, 1289 0, sizeof(struct lpfc_name)); 1290 } 1291 1292 rc |= BG_ERR_TGT | BG_ERR_SWAP; 1293 /* Signals the caller to swap CRC->CSUM */ 1294 1295 lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT, 1296 "0817 BLKGRD: Injecting guard error: " 1297 "write lba x%lx\n", (unsigned long)lba); 1298 break; 1299 case SCSI_PROT_WRITE_STRIP: 1300 /* 1301 * For WRITE_STRIP and WRITE_PASS, 1302 * force the error on data 1303 * being copied from SLI-Host to SLI-Port. 1304 */ 1305 phba->lpfc_injerr_wgrd_cnt--; 1306 if (phba->lpfc_injerr_wgrd_cnt == 0) { 1307 phba->lpfc_injerr_nportid = 0; 1308 phba->lpfc_injerr_lba = 1309 LPFC_INJERR_LBA_OFF; 1310 memset(&phba->lpfc_injerr_wwpn, 1311 0, sizeof(struct lpfc_name)); 1312 } 1313 1314 rc = BG_ERR_INIT | BG_ERR_SWAP; 1315 /* Signals the caller to swap CRC->CSUM */ 1316 1317 lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT, 1318 "0816 BLKGRD: Injecting guard error: " 1319 "write lba x%lx\n", (unsigned long)lba); 1320 break; 1321 } 1322 } 1323 if (phba->lpfc_injerr_rgrd_cnt) { 1324 switch (op) { 1325 case SCSI_PROT_READ_INSERT: 1326 case SCSI_PROT_READ_STRIP: 1327 case SCSI_PROT_READ_PASS: 1328 /* 1329 * For READ_STRIP and READ_PASS, force the 1330 * error on data being read off the wire. It 1331 * should force an IO error to the driver. 1332 */ 1333 phba->lpfc_injerr_rgrd_cnt--; 1334 if (phba->lpfc_injerr_rgrd_cnt == 0) { 1335 phba->lpfc_injerr_nportid = 0; 1336 phba->lpfc_injerr_lba = 1337 LPFC_INJERR_LBA_OFF; 1338 memset(&phba->lpfc_injerr_wwpn, 1339 0, sizeof(struct lpfc_name)); 1340 } 1341 1342 rc = BG_ERR_INIT | BG_ERR_SWAP; 1343 /* Signals the caller to swap CRC->CSUM */ 1344 1345 lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT, 1346 "0818 BLKGRD: Injecting guard error: " 1347 "read lba x%lx\n", (unsigned long)lba); 1348 } 1349 } 1350 } 1351 1352 return rc; 1353} 1354#endif 1355 1356/** 1357 * lpfc_sc_to_bg_opcodes - Determine the BlockGuard opcodes to be used with 1358 * the specified SCSI command. 1359 * @phba: The Hba for which this call is being executed. 1360 * @sc: The SCSI command to examine 1361 * @txop: (out) BlockGuard operation for transmitted data 1362 * @rxop: (out) BlockGuard operation for received data 1363 * 1364 * Returns: zero on success; non-zero if tx and/or rx op cannot be determined 1365 * 1366 **/ 1367static int 1368lpfc_sc_to_bg_opcodes(struct lpfc_hba *phba, struct scsi_cmnd *sc, 1369 uint8_t *txop, uint8_t *rxop) 1370{ 1371 uint8_t ret = 0; 1372 1373 if (sc->prot_flags & SCSI_PROT_IP_CHECKSUM) { 1374 switch (scsi_get_prot_op(sc)) { 1375 case SCSI_PROT_READ_INSERT: 1376 case SCSI_PROT_WRITE_STRIP: 1377 *rxop = BG_OP_IN_NODIF_OUT_CSUM; 1378 *txop = BG_OP_IN_CSUM_OUT_NODIF; 1379 break; 1380 1381 case SCSI_PROT_READ_STRIP: 1382 case SCSI_PROT_WRITE_INSERT: 1383 *rxop = BG_OP_IN_CRC_OUT_NODIF; 1384 *txop = BG_OP_IN_NODIF_OUT_CRC; 1385 break; 1386 1387 case SCSI_PROT_READ_PASS: 1388 case SCSI_PROT_WRITE_PASS: 1389 *rxop = BG_OP_IN_CRC_OUT_CSUM; 1390 *txop = BG_OP_IN_CSUM_OUT_CRC; 1391 break; 1392 1393 case SCSI_PROT_NORMAL: 1394 default: 1395 lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT, 1396 "9063 BLKGRD: Bad op/guard:%d/IP combination\n", 1397 scsi_get_prot_op(sc)); 1398 ret = 1; 1399 break; 1400 1401 } 1402 } else { 1403 switch (scsi_get_prot_op(sc)) { 1404 case SCSI_PROT_READ_STRIP: 1405 case SCSI_PROT_WRITE_INSERT: 1406 *rxop = BG_OP_IN_CRC_OUT_NODIF; 1407 *txop = BG_OP_IN_NODIF_OUT_CRC; 1408 break; 1409 1410 case SCSI_PROT_READ_PASS: 1411 case SCSI_PROT_WRITE_PASS: 1412 *rxop = BG_OP_IN_CRC_OUT_CRC; 1413 *txop = BG_OP_IN_CRC_OUT_CRC; 1414 break; 1415 1416 case SCSI_PROT_READ_INSERT: 1417 case SCSI_PROT_WRITE_STRIP: 1418 *rxop = BG_OP_IN_NODIF_OUT_CRC; 1419 *txop = BG_OP_IN_CRC_OUT_NODIF; 1420 break; 1421 1422 case SCSI_PROT_NORMAL: 1423 default: 1424 lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT, 1425 "9075 BLKGRD: Bad op/guard:%d/CRC combination\n", 1426 scsi_get_prot_op(sc)); 1427 ret = 1; 1428 break; 1429 } 1430 } 1431 1432 return ret; 1433} 1434 1435#ifdef CONFIG_SCSI_LPFC_DEBUG_FS 1436/** 1437 * lpfc_bg_err_opcodes - reDetermine the BlockGuard opcodes to be used with 1438 * the specified SCSI command in order to force a guard tag error. 1439 * @phba: The Hba for which this call is being executed. 1440 * @sc: The SCSI command to examine 1441 * @txop: (out) BlockGuard operation for transmitted data 1442 * @rxop: (out) BlockGuard operation for received data 1443 * 1444 * Returns: zero on success; non-zero if tx and/or rx op cannot be determined 1445 * 1446 **/ 1447static int 1448lpfc_bg_err_opcodes(struct lpfc_hba *phba, struct scsi_cmnd *sc, 1449 uint8_t *txop, uint8_t *rxop) 1450{ 1451 1452 if (sc->prot_flags & SCSI_PROT_IP_CHECKSUM) { 1453 switch (scsi_get_prot_op(sc)) { 1454 case SCSI_PROT_READ_INSERT: 1455 case SCSI_PROT_WRITE_STRIP: 1456 *rxop = BG_OP_IN_NODIF_OUT_CRC; 1457 *txop = BG_OP_IN_CRC_OUT_NODIF; 1458 break; 1459 1460 case SCSI_PROT_READ_STRIP: 1461 case SCSI_PROT_WRITE_INSERT: 1462 *rxop = BG_OP_IN_CSUM_OUT_NODIF; 1463 *txop = BG_OP_IN_NODIF_OUT_CSUM; 1464 break; 1465 1466 case SCSI_PROT_READ_PASS: 1467 case SCSI_PROT_WRITE_PASS: 1468 *rxop = BG_OP_IN_CSUM_OUT_CRC; 1469 *txop = BG_OP_IN_CRC_OUT_CSUM; 1470 break; 1471 1472 case SCSI_PROT_NORMAL: 1473 default: 1474 break; 1475 1476 } 1477 } else { 1478 switch (scsi_get_prot_op(sc)) { 1479 case SCSI_PROT_READ_STRIP: 1480 case SCSI_PROT_WRITE_INSERT: 1481 *rxop = BG_OP_IN_CSUM_OUT_NODIF; 1482 *txop = BG_OP_IN_NODIF_OUT_CSUM; 1483 break; 1484 1485 case SCSI_PROT_READ_PASS: 1486 case SCSI_PROT_WRITE_PASS: 1487 *rxop = BG_OP_IN_CSUM_OUT_CSUM; 1488 *txop = BG_OP_IN_CSUM_OUT_CSUM; 1489 break; 1490 1491 case SCSI_PROT_READ_INSERT: 1492 case SCSI_PROT_WRITE_STRIP: 1493 *rxop = BG_OP_IN_NODIF_OUT_CSUM; 1494 *txop = BG_OP_IN_CSUM_OUT_NODIF; 1495 break; 1496 1497 case SCSI_PROT_NORMAL: 1498 default: 1499 break; 1500 } 1501 } 1502 1503 return 0; 1504} 1505#endif 1506 1507/** 1508 * lpfc_bg_setup_bpl - Setup BlockGuard BPL with no protection data 1509 * @phba: The Hba for which this call is being executed. 1510 * @sc: pointer to scsi command we're working on 1511 * @bpl: pointer to buffer list for protection groups 1512 * @datasegcnt: number of segments of data that have been dma mapped 1513 * 1514 * This function sets up BPL buffer list for protection groups of 1515 * type LPFC_PG_TYPE_NO_DIF 1516 * 1517 * This is usually used when the HBA is instructed to generate 1518 * DIFs and insert them into data stream (or strip DIF from 1519 * incoming data stream) 1520 * 1521 * The buffer list consists of just one protection group described 1522 * below: 1523 * +-------------------------+ 1524 * start of prot group --> | PDE_5 | 1525 * +-------------------------+ 1526 * | PDE_6 | 1527 * +-------------------------+ 1528 * | Data BDE | 1529 * +-------------------------+ 1530 * |more Data BDE's ... (opt)| 1531 * +-------------------------+ 1532 * 1533 * 1534 * Note: Data s/g buffers have been dma mapped 1535 * 1536 * Returns the number of BDEs added to the BPL. 1537 **/ 1538static int 1539lpfc_bg_setup_bpl(struct lpfc_hba *phba, struct scsi_cmnd *sc, 1540 struct ulp_bde64 *bpl, int datasegcnt) 1541{ 1542 struct scatterlist *sgde = NULL; /* s/g data entry */ 1543 struct lpfc_pde5 *pde5 = NULL; 1544 struct lpfc_pde6 *pde6 = NULL; 1545 dma_addr_t physaddr; 1546 int i = 0, num_bde = 0, status; 1547 int datadir = sc->sc_data_direction; 1548#ifdef CONFIG_SCSI_LPFC_DEBUG_FS 1549 uint32_t rc; 1550#endif 1551 uint32_t checking = 1; 1552 uint32_t reftag; 1553 uint8_t txop, rxop; 1554 1555 status = lpfc_sc_to_bg_opcodes(phba, sc, &txop, &rxop); 1556 if (status) 1557 goto out; 1558 1559 /* extract some info from the scsi command for pde*/ 1560 reftag = scsi_prot_ref_tag(sc); 1561 1562#ifdef CONFIG_SCSI_LPFC_DEBUG_FS 1563 rc = lpfc_bg_err_inject(phba, sc, &reftag, NULL, 1); 1564 if (rc) { 1565 if (rc & BG_ERR_SWAP) 1566 lpfc_bg_err_opcodes(phba, sc, &txop, &rxop); 1567 if (rc & BG_ERR_CHECK) 1568 checking = 0; 1569 } 1570#endif 1571 1572 /* setup PDE5 with what we have */ 1573 pde5 = (struct lpfc_pde5 *) bpl; 1574 memset(pde5, 0, sizeof(struct lpfc_pde5)); 1575 bf_set(pde5_type, pde5, LPFC_PDE5_DESCRIPTOR); 1576 1577 /* Endianness conversion if necessary for PDE5 */ 1578 pde5->word0 = cpu_to_le32(pde5->word0); 1579 pde5->reftag = cpu_to_le32(reftag); 1580 1581 /* advance bpl and increment bde count */ 1582 num_bde++; 1583 bpl++; 1584 pde6 = (struct lpfc_pde6 *) bpl; 1585 1586 /* setup PDE6 with the rest of the info */ 1587 memset(pde6, 0, sizeof(struct lpfc_pde6)); 1588 bf_set(pde6_type, pde6, LPFC_PDE6_DESCRIPTOR); 1589 bf_set(pde6_optx, pde6, txop); 1590 bf_set(pde6_oprx, pde6, rxop); 1591 1592 /* 1593 * We only need to check the data on READs, for WRITEs 1594 * protection data is automatically generated, not checked. 1595 */ 1596 if (datadir == DMA_FROM_DEVICE) { 1597 if (sc->prot_flags & SCSI_PROT_GUARD_CHECK) 1598 bf_set(pde6_ce, pde6, checking); 1599 else 1600 bf_set(pde6_ce, pde6, 0); 1601 1602 if (sc->prot_flags & SCSI_PROT_REF_CHECK) 1603 bf_set(pde6_re, pde6, checking); 1604 else 1605 bf_set(pde6_re, pde6, 0); 1606 } 1607 bf_set(pde6_ai, pde6, 1); 1608 bf_set(pde6_ae, pde6, 0); 1609 bf_set(pde6_apptagval, pde6, 0); 1610 1611 /* Endianness conversion if necessary for PDE6 */ 1612 pde6->word0 = cpu_to_le32(pde6->word0); 1613 pde6->word1 = cpu_to_le32(pde6->word1); 1614 pde6->word2 = cpu_to_le32(pde6->word2); 1615 1616 /* advance bpl and increment bde count */ 1617 num_bde++; 1618 bpl++; 1619 1620 /* assumption: caller has already run dma_map_sg on command data */ 1621 scsi_for_each_sg(sc, sgde, datasegcnt, i) { 1622 physaddr = sg_dma_address(sgde); 1623 bpl->addrLow = le32_to_cpu(putPaddrLow(physaddr)); 1624 bpl->addrHigh = le32_to_cpu(putPaddrHigh(physaddr)); 1625 bpl->tus.f.bdeSize = sg_dma_len(sgde); 1626 if (datadir == DMA_TO_DEVICE) 1627 bpl->tus.f.bdeFlags = BUFF_TYPE_BDE_64; 1628 else 1629 bpl->tus.f.bdeFlags = BUFF_TYPE_BDE_64I; 1630 bpl->tus.w = le32_to_cpu(bpl->tus.w); 1631 bpl++; 1632 num_bde++; 1633 } 1634 1635out: 1636 return num_bde; 1637} 1638 1639/** 1640 * lpfc_bg_setup_bpl_prot - Setup BlockGuard BPL with protection data 1641 * @phba: The Hba for which this call is being executed. 1642 * @sc: pointer to scsi command we're working on 1643 * @bpl: pointer to buffer list for protection groups 1644 * @datacnt: number of segments of data that have been dma mapped 1645 * @protcnt: number of segment of protection data that have been dma mapped 1646 * 1647 * This function sets up BPL buffer list for protection groups of 1648 * type LPFC_PG_TYPE_DIF 1649 * 1650 * This is usually used when DIFs are in their own buffers, 1651 * separate from the data. The HBA can then by instructed 1652 * to place the DIFs in the outgoing stream. For read operations, 1653 * The HBA could extract the DIFs and place it in DIF buffers. 1654 * 1655 * The buffer list for this type consists of one or more of the 1656 * protection groups described below: 1657 * +-------------------------+ 1658 * start of first prot group --> | PDE_5 | 1659 * +-------------------------+ 1660 * | PDE_6 | 1661 * +-------------------------+ 1662 * | PDE_7 (Prot BDE) | 1663 * +-------------------------+ 1664 * | Data BDE | 1665 * +-------------------------+ 1666 * |more Data BDE's ... (opt)| 1667 * +-------------------------+ 1668 * start of new prot group --> | PDE_5 | 1669 * +-------------------------+ 1670 * | ... | 1671 * +-------------------------+ 1672 * 1673 * Note: It is assumed that both data and protection s/g buffers have been 1674 * mapped for DMA 1675 * 1676 * Returns the number of BDEs added to the BPL. 1677 **/ 1678static int 1679lpfc_bg_setup_bpl_prot(struct lpfc_hba *phba, struct scsi_cmnd *sc, 1680 struct ulp_bde64 *bpl, int datacnt, int protcnt) 1681{ 1682 struct scatterlist *sgde = NULL; /* s/g data entry */ 1683 struct scatterlist *sgpe = NULL; /* s/g prot entry */ 1684 struct lpfc_pde5 *pde5 = NULL; 1685 struct lpfc_pde6 *pde6 = NULL; 1686 struct lpfc_pde7 *pde7 = NULL; 1687 dma_addr_t dataphysaddr, protphysaddr; 1688 unsigned short curr_prot = 0; 1689 unsigned int split_offset; 1690 unsigned int protgroup_len, protgroup_offset = 0, protgroup_remainder; 1691 unsigned int protgrp_blks, protgrp_bytes; 1692 unsigned int remainder, subtotal; 1693 int status; 1694 int datadir = sc->sc_data_direction; 1695 unsigned char pgdone = 0, alldone = 0; 1696 unsigned blksize; 1697#ifdef CONFIG_SCSI_LPFC_DEBUG_FS 1698 uint32_t rc; 1699#endif 1700 uint32_t checking = 1; 1701 uint32_t reftag; 1702 uint8_t txop, rxop; 1703 int num_bde = 0; 1704 1705 sgpe = scsi_prot_sglist(sc); 1706 sgde = scsi_sglist(sc); 1707 1708 if (!sgpe || !sgde) { 1709 lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT, 1710 "9020 Invalid s/g entry: data=x%px prot=x%px\n", 1711 sgpe, sgde); 1712 return 0; 1713 } 1714 1715 status = lpfc_sc_to_bg_opcodes(phba, sc, &txop, &rxop); 1716 if (status) 1717 goto out; 1718 1719 /* extract some info from the scsi command */ 1720 blksize = scsi_prot_interval(sc); 1721 reftag = scsi_prot_ref_tag(sc); 1722 1723#ifdef CONFIG_SCSI_LPFC_DEBUG_FS 1724 rc = lpfc_bg_err_inject(phba, sc, &reftag, NULL, 1); 1725 if (rc) { 1726 if (rc & BG_ERR_SWAP) 1727 lpfc_bg_err_opcodes(phba, sc, &txop, &rxop); 1728 if (rc & BG_ERR_CHECK) 1729 checking = 0; 1730 } 1731#endif 1732 1733 split_offset = 0; 1734 do { 1735 /* Check to see if we ran out of space */ 1736 if (num_bde >= (phba->cfg_total_seg_cnt - 2)) 1737 return num_bde + 3; 1738 1739 /* setup PDE5 with what we have */ 1740 pde5 = (struct lpfc_pde5 *) bpl; 1741 memset(pde5, 0, sizeof(struct lpfc_pde5)); 1742 bf_set(pde5_type, pde5, LPFC_PDE5_DESCRIPTOR); 1743 1744 /* Endianness conversion if necessary for PDE5 */ 1745 pde5->word0 = cpu_to_le32(pde5->word0); 1746 pde5->reftag = cpu_to_le32(reftag); 1747 1748 /* advance bpl and increment bde count */ 1749 num_bde++; 1750 bpl++; 1751 pde6 = (struct lpfc_pde6 *) bpl; 1752 1753 /* setup PDE6 with the rest of the info */ 1754 memset(pde6, 0, sizeof(struct lpfc_pde6)); 1755 bf_set(pde6_type, pde6, LPFC_PDE6_DESCRIPTOR); 1756 bf_set(pde6_optx, pde6, txop); 1757 bf_set(pde6_oprx, pde6, rxop); 1758 1759 if (sc->prot_flags & SCSI_PROT_GUARD_CHECK) 1760 bf_set(pde6_ce, pde6, checking); 1761 else 1762 bf_set(pde6_ce, pde6, 0); 1763 1764 if (sc->prot_flags & SCSI_PROT_REF_CHECK) 1765 bf_set(pde6_re, pde6, checking); 1766 else 1767 bf_set(pde6_re, pde6, 0); 1768 1769 bf_set(pde6_ai, pde6, 1); 1770 bf_set(pde6_ae, pde6, 0); 1771 bf_set(pde6_apptagval, pde6, 0); 1772 1773 /* Endianness conversion if necessary for PDE6 */ 1774 pde6->word0 = cpu_to_le32(pde6->word0); 1775 pde6->word1 = cpu_to_le32(pde6->word1); 1776 pde6->word2 = cpu_to_le32(pde6->word2); 1777 1778 /* advance bpl and increment bde count */ 1779 num_bde++; 1780 bpl++; 1781 1782 /* setup the first BDE that points to protection buffer */ 1783 protphysaddr = sg_dma_address(sgpe) + protgroup_offset; 1784 protgroup_len = sg_dma_len(sgpe) - protgroup_offset; 1785 1786 /* must be integer multiple of the DIF block length */ 1787 BUG_ON(protgroup_len % 8); 1788 1789 pde7 = (struct lpfc_pde7 *) bpl; 1790 memset(pde7, 0, sizeof(struct lpfc_pde7)); 1791 bf_set(pde7_type, pde7, LPFC_PDE7_DESCRIPTOR); 1792 1793 pde7->addrHigh = le32_to_cpu(putPaddrHigh(protphysaddr)); 1794 pde7->addrLow = le32_to_cpu(putPaddrLow(protphysaddr)); 1795 1796 protgrp_blks = protgroup_len / 8; 1797 protgrp_bytes = protgrp_blks * blksize; 1798 1799 /* check if this pde is crossing the 4K boundary; if so split */ 1800 if ((pde7->addrLow & 0xfff) + protgroup_len > 0x1000) { 1801 protgroup_remainder = 0x1000 - (pde7->addrLow & 0xfff); 1802 protgroup_offset += protgroup_remainder; 1803 protgrp_blks = protgroup_remainder / 8; 1804 protgrp_bytes = protgrp_blks * blksize; 1805 } else { 1806 protgroup_offset = 0; 1807 curr_prot++; 1808 } 1809 1810 num_bde++; 1811 1812 /* setup BDE's for data blocks associated with DIF data */ 1813 pgdone = 0; 1814 subtotal = 0; /* total bytes processed for current prot grp */ 1815 while (!pgdone) { 1816 /* Check to see if we ran out of space */ 1817 if (num_bde >= phba->cfg_total_seg_cnt) 1818 return num_bde + 1; 1819 1820 if (!sgde) { 1821 lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT, 1822 "9065 BLKGRD:%s Invalid data segment\n", 1823 __func__); 1824 return 0; 1825 } 1826 bpl++; 1827 dataphysaddr = sg_dma_address(sgde) + split_offset; 1828 bpl->addrLow = le32_to_cpu(putPaddrLow(dataphysaddr)); 1829 bpl->addrHigh = le32_to_cpu(putPaddrHigh(dataphysaddr)); 1830 1831 remainder = sg_dma_len(sgde) - split_offset; 1832 1833 if ((subtotal + remainder) <= protgrp_bytes) { 1834 /* we can use this whole buffer */ 1835 bpl->tus.f.bdeSize = remainder; 1836 split_offset = 0; 1837 1838 if ((subtotal + remainder) == protgrp_bytes) 1839 pgdone = 1; 1840 } else { 1841 /* must split this buffer with next prot grp */ 1842 bpl->tus.f.bdeSize = protgrp_bytes - subtotal; 1843 split_offset += bpl->tus.f.bdeSize; 1844 } 1845 1846 subtotal += bpl->tus.f.bdeSize; 1847 1848 if (datadir == DMA_TO_DEVICE) 1849 bpl->tus.f.bdeFlags = BUFF_TYPE_BDE_64; 1850 else 1851 bpl->tus.f.bdeFlags = BUFF_TYPE_BDE_64I; 1852 bpl->tus.w = le32_to_cpu(bpl->tus.w); 1853 1854 num_bde++; 1855 1856 if (split_offset) 1857 break; 1858 1859 /* Move to the next s/g segment if possible */ 1860 sgde = sg_next(sgde); 1861 1862 } 1863 1864 if (protgroup_offset) { 1865 /* update the reference tag */ 1866 reftag += protgrp_blks; 1867 bpl++; 1868 continue; 1869 } 1870 1871 /* are we done ? */ 1872 if (curr_prot == protcnt) { 1873 alldone = 1; 1874 } else if (curr_prot < protcnt) { 1875 /* advance to next prot buffer */ 1876 sgpe = sg_next(sgpe); 1877 bpl++; 1878 1879 /* update the reference tag */ 1880 reftag += protgrp_blks; 1881 } else { 1882 /* if we're here, we have a bug */ 1883 lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT, 1884 "9054 BLKGRD: bug in %s\n", __func__); 1885 } 1886 1887 } while (!alldone); 1888out: 1889 1890 return num_bde; 1891} 1892 1893/** 1894 * lpfc_bg_setup_sgl - Setup BlockGuard SGL with no protection data 1895 * @phba: The Hba for which this call is being executed. 1896 * @sc: pointer to scsi command we're working on 1897 * @sgl: pointer to buffer list for protection groups 1898 * @datasegcnt: number of segments of data that have been dma mapped 1899 * @lpfc_cmd: lpfc scsi command object pointer. 1900 * 1901 * This function sets up SGL buffer list for protection groups of 1902 * type LPFC_PG_TYPE_NO_DIF 1903 * 1904 * This is usually used when the HBA is instructed to generate 1905 * DIFs and insert them into data stream (or strip DIF from 1906 * incoming data stream) 1907 * 1908 * The buffer list consists of just one protection group described 1909 * below: 1910 * +-------------------------+ 1911 * start of prot group --> | DI_SEED | 1912 * +-------------------------+ 1913 * | Data SGE | 1914 * +-------------------------+ 1915 * |more Data SGE's ... (opt)| 1916 * +-------------------------+ 1917 * 1918 * 1919 * Note: Data s/g buffers have been dma mapped 1920 * 1921 * Returns the number of SGEs added to the SGL. 1922 **/ 1923static uint32_t 1924lpfc_bg_setup_sgl(struct lpfc_hba *phba, struct scsi_cmnd *sc, 1925 struct sli4_sge *sgl, int datasegcnt, 1926 struct lpfc_io_buf *lpfc_cmd) 1927{ 1928 struct scatterlist *sgde = NULL; /* s/g data entry */ 1929 struct sli4_sge_diseed *diseed = NULL; 1930 dma_addr_t physaddr; 1931 int i = 0, status; 1932 uint32_t reftag, num_sge = 0; 1933 uint8_t txop, rxop; 1934#ifdef CONFIG_SCSI_LPFC_DEBUG_FS 1935 uint32_t rc; 1936#endif 1937 uint32_t checking = 1; 1938 uint32_t dma_len; 1939 uint32_t dma_offset = 0; 1940 struct sli4_hybrid_sgl *sgl_xtra = NULL; 1941 int j; 1942 bool lsp_just_set = false; 1943 1944 status = lpfc_sc_to_bg_opcodes(phba, sc, &txop, &rxop); 1945 if (status) 1946 goto out; 1947 1948 /* extract some info from the scsi command for pde*/ 1949 reftag = scsi_prot_ref_tag(sc); 1950 1951#ifdef CONFIG_SCSI_LPFC_DEBUG_FS 1952 rc = lpfc_bg_err_inject(phba, sc, &reftag, NULL, 1); 1953 if (rc) { 1954 if (rc & BG_ERR_SWAP) 1955 lpfc_bg_err_opcodes(phba, sc, &txop, &rxop); 1956 if (rc & BG_ERR_CHECK) 1957 checking = 0; 1958 } 1959#endif 1960 1961 /* setup DISEED with what we have */ 1962 diseed = (struct sli4_sge_diseed *) sgl; 1963 memset(diseed, 0, sizeof(struct sli4_sge_diseed)); 1964 bf_set(lpfc_sli4_sge_type, sgl, LPFC_SGE_TYPE_DISEED); 1965 1966 /* Endianness conversion if necessary */ 1967 diseed->ref_tag = cpu_to_le32(reftag); 1968 diseed->ref_tag_tran = diseed->ref_tag; 1969 1970 /* 1971 * We only need to check the data on READs, for WRITEs 1972 * protection data is automatically generated, not checked. 1973 */ 1974 if (sc->sc_data_direction == DMA_FROM_DEVICE) { 1975 if (sc->prot_flags & SCSI_PROT_GUARD_CHECK) 1976 bf_set(lpfc_sli4_sge_dif_ce, diseed, checking); 1977 else 1978 bf_set(lpfc_sli4_sge_dif_ce, diseed, 0); 1979 1980 if (sc->prot_flags & SCSI_PROT_REF_CHECK) 1981 bf_set(lpfc_sli4_sge_dif_re, diseed, checking); 1982 else 1983 bf_set(lpfc_sli4_sge_dif_re, diseed, 0); 1984 } 1985 1986 /* setup DISEED with the rest of the info */ 1987 bf_set(lpfc_sli4_sge_dif_optx, diseed, txop); 1988 bf_set(lpfc_sli4_sge_dif_oprx, diseed, rxop); 1989 1990 bf_set(lpfc_sli4_sge_dif_ai, diseed, 1); 1991 bf_set(lpfc_sli4_sge_dif_me, diseed, 0); 1992 1993 /* Endianness conversion if necessary for DISEED */ 1994 diseed->word2 = cpu_to_le32(diseed->word2); 1995 diseed->word3 = cpu_to_le32(diseed->word3); 1996 1997 /* advance bpl and increment sge count */ 1998 num_sge++; 1999 sgl++; 2000 2001 /* assumption: caller has already run dma_map_sg on command data */ 2002 sgde = scsi_sglist(sc); 2003 j = 3; 2004 for (i = 0; i < datasegcnt; i++) { 2005 /* clear it */ 2006 sgl->word2 = 0; 2007 2008 /* do we need to expand the segment */ 2009 if (!lsp_just_set && !((j + 1) % phba->border_sge_num) && 2010 ((datasegcnt - 1) != i)) { 2011 /* set LSP type */ 2012 bf_set(lpfc_sli4_sge_type, sgl, LPFC_SGE_TYPE_LSP); 2013 2014 sgl_xtra = lpfc_get_sgl_per_hdwq(phba, lpfc_cmd); 2015 2016 if (unlikely(!sgl_xtra)) { 2017 lpfc_cmd->seg_cnt = 0; 2018 return 0; 2019 } 2020 sgl->addr_lo = cpu_to_le32(putPaddrLow( 2021 sgl_xtra->dma_phys_sgl)); 2022 sgl->addr_hi = cpu_to_le32(putPaddrHigh( 2023 sgl_xtra->dma_phys_sgl)); 2024 2025 } else { 2026 bf_set(lpfc_sli4_sge_type, sgl, LPFC_SGE_TYPE_DATA); 2027 } 2028 2029 if (!(bf_get(lpfc_sli4_sge_type, sgl) & LPFC_SGE_TYPE_LSP)) { 2030 if ((datasegcnt - 1) == i) 2031 bf_set(lpfc_sli4_sge_last, sgl, 1); 2032 physaddr = sg_dma_address(sgde); 2033 dma_len = sg_dma_len(sgde); 2034 sgl->addr_lo = cpu_to_le32(putPaddrLow(physaddr)); 2035 sgl->addr_hi = cpu_to_le32(putPaddrHigh(physaddr)); 2036 2037 bf_set(lpfc_sli4_sge_offset, sgl, dma_offset); 2038 sgl->word2 = cpu_to_le32(sgl->word2); 2039 sgl->sge_len = cpu_to_le32(dma_len); 2040 2041 dma_offset += dma_len; 2042 sgde = sg_next(sgde); 2043 2044 sgl++; 2045 num_sge++; 2046 lsp_just_set = false; 2047 2048 } else { 2049 sgl->word2 = cpu_to_le32(sgl->word2); 2050 sgl->sge_len = cpu_to_le32(phba->cfg_sg_dma_buf_size); 2051 2052 sgl = (struct sli4_sge *)sgl_xtra->dma_sgl; 2053 i = i - 1; 2054 2055 lsp_just_set = true; 2056 } 2057 2058 j++; 2059 2060 } 2061 2062out: 2063 return num_sge; 2064} 2065 2066/** 2067 * lpfc_bg_setup_sgl_prot - Setup BlockGuard SGL with protection data 2068 * @phba: The Hba for which this call is being executed. 2069 * @sc: pointer to scsi command we're working on 2070 * @sgl: pointer to buffer list for protection groups 2071 * @datacnt: number of segments of data that have been dma mapped 2072 * @protcnt: number of segment of protection data that have been dma mapped 2073 * @lpfc_cmd: lpfc scsi command object pointer. 2074 * 2075 * This function sets up SGL buffer list for protection groups of 2076 * type LPFC_PG_TYPE_DIF 2077 * 2078 * This is usually used when DIFs are in their own buffers, 2079 * separate from the data. The HBA can then by instructed 2080 * to place the DIFs in the outgoing stream. For read operations, 2081 * The HBA could extract the DIFs and place it in DIF buffers. 2082 * 2083 * The buffer list for this type consists of one or more of the 2084 * protection groups described below: 2085 * +-------------------------+ 2086 * start of first prot group --> | DISEED | 2087 * +-------------------------+ 2088 * | DIF (Prot SGE) | 2089 * +-------------------------+ 2090 * | Data SGE | 2091 * +-------------------------+ 2092 * |more Data SGE's ... (opt)| 2093 * +-------------------------+ 2094 * start of new prot group --> | DISEED | 2095 * +-------------------------+ 2096 * | ... | 2097 * +-------------------------+ 2098 * 2099 * Note: It is assumed that both data and protection s/g buffers have been 2100 * mapped for DMA 2101 * 2102 * Returns the number of SGEs added to the SGL. 2103 **/ 2104static uint32_t 2105lpfc_bg_setup_sgl_prot(struct lpfc_hba *phba, struct scsi_cmnd *sc, 2106 struct sli4_sge *sgl, int datacnt, int protcnt, 2107 struct lpfc_io_buf *lpfc_cmd) 2108{ 2109 struct scatterlist *sgde = NULL; /* s/g data entry */ 2110 struct scatterlist *sgpe = NULL; /* s/g prot entry */ 2111 struct sli4_sge_diseed *diseed = NULL; 2112 dma_addr_t dataphysaddr, protphysaddr; 2113 unsigned short curr_prot = 0; 2114 unsigned int split_offset; 2115 unsigned int protgroup_len, protgroup_offset = 0, protgroup_remainder; 2116 unsigned int protgrp_blks, protgrp_bytes; 2117 unsigned int remainder, subtotal; 2118 int status; 2119 unsigned char pgdone = 0, alldone = 0; 2120 unsigned blksize; 2121 uint32_t reftag; 2122 uint8_t txop, rxop; 2123 uint32_t dma_len; 2124#ifdef CONFIG_SCSI_LPFC_DEBUG_FS 2125 uint32_t rc; 2126#endif 2127 uint32_t checking = 1; 2128 uint32_t dma_offset = 0, num_sge = 0; 2129 int j = 2; 2130 struct sli4_hybrid_sgl *sgl_xtra = NULL; 2131 2132 sgpe = scsi_prot_sglist(sc); 2133 sgde = scsi_sglist(sc); 2134 2135 if (!sgpe || !sgde) { 2136 lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT, 2137 "9082 Invalid s/g entry: data=x%px prot=x%px\n", 2138 sgpe, sgde); 2139 return 0; 2140 } 2141 2142 status = lpfc_sc_to_bg_opcodes(phba, sc, &txop, &rxop); 2143 if (status) 2144 goto out; 2145 2146 /* extract some info from the scsi command */ 2147 blksize = scsi_prot_interval(sc); 2148 reftag = scsi_prot_ref_tag(sc); 2149 2150#ifdef CONFIG_SCSI_LPFC_DEBUG_FS 2151 rc = lpfc_bg_err_inject(phba, sc, &reftag, NULL, 1); 2152 if (rc) { 2153 if (rc & BG_ERR_SWAP) 2154 lpfc_bg_err_opcodes(phba, sc, &txop, &rxop); 2155 if (rc & BG_ERR_CHECK) 2156 checking = 0; 2157 } 2158#endif 2159 2160 split_offset = 0; 2161 do { 2162 /* Check to see if we ran out of space */ 2163 if ((num_sge >= (phba->cfg_total_seg_cnt - 2)) && 2164 !(phba->cfg_xpsgl)) 2165 return num_sge + 3; 2166 2167 /* DISEED and DIF have to be together */ 2168 if (!((j + 1) % phba->border_sge_num) || 2169 !((j + 2) % phba->border_sge_num) || 2170 !((j + 3) % phba->border_sge_num)) { 2171 sgl->word2 = 0; 2172 2173 /* set LSP type */ 2174 bf_set(lpfc_sli4_sge_type, sgl, LPFC_SGE_TYPE_LSP); 2175 2176 sgl_xtra = lpfc_get_sgl_per_hdwq(phba, lpfc_cmd); 2177 2178 if (unlikely(!sgl_xtra)) { 2179 goto out; 2180 } else { 2181 sgl->addr_lo = cpu_to_le32(putPaddrLow( 2182 sgl_xtra->dma_phys_sgl)); 2183 sgl->addr_hi = cpu_to_le32(putPaddrHigh( 2184 sgl_xtra->dma_phys_sgl)); 2185 } 2186 2187 sgl->word2 = cpu_to_le32(sgl->word2); 2188 sgl->sge_len = cpu_to_le32(phba->cfg_sg_dma_buf_size); 2189 2190 sgl = (struct sli4_sge *)sgl_xtra->dma_sgl; 2191 j = 0; 2192 } 2193 2194 /* setup DISEED with what we have */ 2195 diseed = (struct sli4_sge_diseed *) sgl; 2196 memset(diseed, 0, sizeof(struct sli4_sge_diseed)); 2197 bf_set(lpfc_sli4_sge_type, sgl, LPFC_SGE_TYPE_DISEED); 2198 2199 /* Endianness conversion if necessary */ 2200 diseed->ref_tag = cpu_to_le32(reftag); 2201 diseed->ref_tag_tran = diseed->ref_tag; 2202 2203 if (sc->prot_flags & SCSI_PROT_GUARD_CHECK) { 2204 bf_set(lpfc_sli4_sge_dif_ce, diseed, checking); 2205 } else { 2206 bf_set(lpfc_sli4_sge_dif_ce, diseed, 0); 2207 /* 2208 * When in this mode, the hardware will replace 2209 * the guard tag from the host with a 2210 * newly generated good CRC for the wire. 2211 * Switch to raw mode here to avoid this 2212 * behavior. What the host sends gets put on the wire. 2213 */ 2214 if (txop == BG_OP_IN_CRC_OUT_CRC) { 2215 txop = BG_OP_RAW_MODE; 2216 rxop = BG_OP_RAW_MODE; 2217 } 2218 } 2219 2220 2221 if (sc->prot_flags & SCSI_PROT_REF_CHECK) 2222 bf_set(lpfc_sli4_sge_dif_re, diseed, checking); 2223 else 2224 bf_set(lpfc_sli4_sge_dif_re, diseed, 0); 2225 2226 /* setup DISEED with the rest of the info */ 2227 bf_set(lpfc_sli4_sge_dif_optx, diseed, txop); 2228 bf_set(lpfc_sli4_sge_dif_oprx, diseed, rxop); 2229 2230 bf_set(lpfc_sli4_sge_dif_ai, diseed, 1); 2231 bf_set(lpfc_sli4_sge_dif_me, diseed, 0); 2232 2233 /* Endianness conversion if necessary for DISEED */ 2234 diseed->word2 = cpu_to_le32(diseed->word2); 2235 diseed->word3 = cpu_to_le32(diseed->word3); 2236 2237 /* advance sgl and increment bde count */ 2238 num_sge++; 2239 2240 sgl++; 2241 j++; 2242 2243 /* setup the first BDE that points to protection buffer */ 2244 protphysaddr = sg_dma_address(sgpe) + protgroup_offset; 2245 protgroup_len = sg_dma_len(sgpe) - protgroup_offset; 2246 2247 /* must be integer multiple of the DIF block length */ 2248 BUG_ON(protgroup_len % 8); 2249 2250 /* Now setup DIF SGE */ 2251 sgl->word2 = 0; 2252 bf_set(lpfc_sli4_sge_type, sgl, LPFC_SGE_TYPE_DIF); 2253 sgl->addr_hi = le32_to_cpu(putPaddrHigh(protphysaddr)); 2254 sgl->addr_lo = le32_to_cpu(putPaddrLow(protphysaddr)); 2255 sgl->word2 = cpu_to_le32(sgl->word2); 2256 sgl->sge_len = 0; 2257 2258 protgrp_blks = protgroup_len / 8; 2259 protgrp_bytes = protgrp_blks * blksize; 2260 2261 /* check if DIF SGE is crossing the 4K boundary; if so split */ 2262 if ((sgl->addr_lo & 0xfff) + protgroup_len > 0x1000) { 2263 protgroup_remainder = 0x1000 - (sgl->addr_lo & 0xfff); 2264 protgroup_offset += protgroup_remainder; 2265 protgrp_blks = protgroup_remainder / 8; 2266 protgrp_bytes = protgrp_blks * blksize; 2267 } else { 2268 protgroup_offset = 0; 2269 curr_prot++; 2270 } 2271 2272 num_sge++; 2273 2274 /* setup SGE's for data blocks associated with DIF data */ 2275 pgdone = 0; 2276 subtotal = 0; /* total bytes processed for current prot grp */ 2277 2278 sgl++; 2279 j++; 2280 2281 while (!pgdone) { 2282 /* Check to see if we ran out of space */ 2283 if ((num_sge >= phba->cfg_total_seg_cnt) && 2284 !phba->cfg_xpsgl) 2285 return num_sge + 1; 2286 2287 if (!sgde) { 2288 lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT, 2289 "9086 BLKGRD:%s Invalid data segment\n", 2290 __func__); 2291 return 0; 2292 } 2293 2294 if (!((j + 1) % phba->border_sge_num)) { 2295 sgl->word2 = 0; 2296 2297 /* set LSP type */ 2298 bf_set(lpfc_sli4_sge_type, sgl, 2299 LPFC_SGE_TYPE_LSP); 2300 2301 sgl_xtra = lpfc_get_sgl_per_hdwq(phba, 2302 lpfc_cmd); 2303 2304 if (unlikely(!sgl_xtra)) { 2305 goto out; 2306 } else { 2307 sgl->addr_lo = cpu_to_le32( 2308 putPaddrLow(sgl_xtra->dma_phys_sgl)); 2309 sgl->addr_hi = cpu_to_le32( 2310 putPaddrHigh(sgl_xtra->dma_phys_sgl)); 2311 } 2312 2313 sgl->word2 = cpu_to_le32(sgl->word2); 2314 sgl->sge_len = cpu_to_le32( 2315 phba->cfg_sg_dma_buf_size); 2316 2317 sgl = (struct sli4_sge *)sgl_xtra->dma_sgl; 2318 } else { 2319 dataphysaddr = sg_dma_address(sgde) + 2320 split_offset; 2321 2322 remainder = sg_dma_len(sgde) - split_offset; 2323 2324 if ((subtotal + remainder) <= protgrp_bytes) { 2325 /* we can use this whole buffer */ 2326 dma_len = remainder; 2327 split_offset = 0; 2328 2329 if ((subtotal + remainder) == 2330 protgrp_bytes) 2331 pgdone = 1; 2332 } else { 2333 /* must split this buffer with next 2334 * prot grp 2335 */ 2336 dma_len = protgrp_bytes - subtotal; 2337 split_offset += dma_len; 2338 } 2339 2340 subtotal += dma_len; 2341 2342 sgl->word2 = 0; 2343 sgl->addr_lo = cpu_to_le32(putPaddrLow( 2344 dataphysaddr)); 2345 sgl->addr_hi = cpu_to_le32(putPaddrHigh( 2346 dataphysaddr)); 2347 bf_set(lpfc_sli4_sge_last, sgl, 0); 2348 bf_set(lpfc_sli4_sge_offset, sgl, dma_offset); 2349 bf_set(lpfc_sli4_sge_type, sgl, 2350 LPFC_SGE_TYPE_DATA); 2351 2352 sgl->sge_len = cpu_to_le32(dma_len); 2353 dma_offset += dma_len; 2354 2355 num_sge++; 2356 2357 if (split_offset) { 2358 sgl++; 2359 j++; 2360 break; 2361 } 2362 2363 /* Move to the next s/g segment if possible */ 2364 sgde = sg_next(sgde); 2365 2366 sgl++; 2367 } 2368 2369 j++; 2370 } 2371 2372 if (protgroup_offset) { 2373 /* update the reference tag */ 2374 reftag += protgrp_blks; 2375 continue; 2376 } 2377 2378 /* are we done ? */ 2379 if (curr_prot == protcnt) { 2380 /* mark the last SGL */ 2381 sgl--; 2382 bf_set(lpfc_sli4_sge_last, sgl, 1); 2383 alldone = 1; 2384 } else if (curr_prot < protcnt) { 2385 /* advance to next prot buffer */ 2386 sgpe = sg_next(sgpe); 2387 2388 /* update the reference tag */ 2389 reftag += protgrp_blks; 2390 } else { 2391 /* if we're here, we have a bug */ 2392 lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT, 2393 "9085 BLKGRD: bug in %s\n", __func__); 2394 } 2395 2396 } while (!alldone); 2397 2398out: 2399 2400 return num_sge; 2401} 2402 2403/** 2404 * lpfc_prot_group_type - Get prtotection group type of SCSI command 2405 * @phba: The Hba for which this call is being executed. 2406 * @sc: pointer to scsi command we're working on 2407 * 2408 * Given a SCSI command that supports DIF, determine composition of protection 2409 * groups involved in setting up buffer lists 2410 * 2411 * Returns: Protection group type (with or without DIF) 2412 * 2413 **/ 2414static int 2415lpfc_prot_group_type(struct lpfc_hba *phba, struct scsi_cmnd *sc) 2416{ 2417 int ret = LPFC_PG_TYPE_INVALID; 2418 unsigned char op = scsi_get_prot_op(sc); 2419 2420 switch (op) { 2421 case SCSI_PROT_READ_STRIP: 2422 case SCSI_PROT_WRITE_INSERT: 2423 ret = LPFC_PG_TYPE_NO_DIF; 2424 break; 2425 case SCSI_PROT_READ_INSERT: 2426 case SCSI_PROT_WRITE_STRIP: 2427 case SCSI_PROT_READ_PASS: 2428 case SCSI_PROT_WRITE_PASS: 2429 ret = LPFC_PG_TYPE_DIF_BUF; 2430 break; 2431 default: 2432 if (phba) 2433 lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT, 2434 "9021 Unsupported protection op:%d\n", 2435 op); 2436 break; 2437 } 2438 return ret; 2439} 2440 2441/** 2442 * lpfc_bg_scsi_adjust_dl - Adjust SCSI data length for BlockGuard 2443 * @phba: The Hba for which this call is being executed. 2444 * @lpfc_cmd: The scsi buffer which is going to be adjusted. 2445 * 2446 * Adjust the data length to account for how much data 2447 * is actually on the wire. 2448 * 2449 * returns the adjusted data length 2450 **/ 2451static int 2452lpfc_bg_scsi_adjust_dl(struct lpfc_hba *phba, 2453 struct lpfc_io_buf *lpfc_cmd) 2454{ 2455 struct scsi_cmnd *sc = lpfc_cmd->pCmd; 2456 int fcpdl; 2457 2458 fcpdl = scsi_bufflen(sc); 2459 2460 /* Check if there is protection data on the wire */ 2461 if (sc->sc_data_direction == DMA_FROM_DEVICE) { 2462 /* Read check for protection data */ 2463 if (scsi_get_prot_op(sc) == SCSI_PROT_READ_INSERT) 2464 return fcpdl; 2465 2466 } else { 2467 /* Write check for protection data */ 2468 if (scsi_get_prot_op(sc) == SCSI_PROT_WRITE_STRIP) 2469 return fcpdl; 2470 } 2471 2472 /* 2473 * If we are in DIF Type 1 mode every data block has a 8 byte 2474 * DIF (trailer) attached to it. Must ajust FCP data length 2475 * to account for the protection data. 2476 */ 2477 fcpdl += (fcpdl / scsi_prot_interval(sc)) * 8; 2478 2479 return fcpdl; 2480} 2481 2482/** 2483 * lpfc_bg_scsi_prep_dma_buf_s3 - DMA mapping for scsi buffer to SLI3 IF spec 2484 * @phba: The Hba for which this call is being executed. 2485 * @lpfc_cmd: The scsi buffer which is going to be prep'ed. 2486 * 2487 * This is the protection/DIF aware version of 2488 * lpfc_scsi_prep_dma_buf(). It may be a good idea to combine the 2489 * two functions eventually, but for now, it's here. 2490 * RETURNS 0 - SUCCESS, 2491 * 1 - Failed DMA map, retry. 2492 * 2 - Invalid scsi cmd or prot-type. Do not rety. 2493 **/ 2494static int 2495lpfc_bg_scsi_prep_dma_buf_s3(struct lpfc_hba *phba, 2496 struct lpfc_io_buf *lpfc_cmd) 2497{ 2498 struct scsi_cmnd *scsi_cmnd = lpfc_cmd->pCmd; 2499 struct fcp_cmnd *fcp_cmnd = lpfc_cmd->fcp_cmnd; 2500 struct ulp_bde64 *bpl = (struct ulp_bde64 *)lpfc_cmd->dma_sgl; 2501 IOCB_t *iocb_cmd = &lpfc_cmd->cur_iocbq.iocb; 2502 uint32_t num_bde = 0; 2503 int datasegcnt, protsegcnt, datadir = scsi_cmnd->sc_data_direction; 2504 int prot_group_type = 0; 2505 int fcpdl; 2506 int ret = 1; 2507 struct lpfc_vport *vport = phba->pport; 2508 2509 /* 2510 * Start the lpfc command prep by bumping the bpl beyond fcp_cmnd 2511 * fcp_rsp regions to the first data bde entry 2512 */ 2513 bpl += 2; 2514 if (scsi_sg_count(scsi_cmnd)) { 2515 /* 2516 * The driver stores the segment count returned from dma_map_sg 2517 * because this a count of dma-mappings used to map the use_sg 2518 * pages. They are not guaranteed to be the same for those 2519 * architectures that implement an IOMMU. 2520 */ 2521 datasegcnt = dma_map_sg(&phba->pcidev->dev, 2522 scsi_sglist(scsi_cmnd), 2523 scsi_sg_count(scsi_cmnd), datadir); 2524 if (unlikely(!datasegcnt)) 2525 return 1; 2526 2527 lpfc_cmd->seg_cnt = datasegcnt; 2528 2529 /* First check if data segment count from SCSI Layer is good */ 2530 if (lpfc_cmd->seg_cnt > phba->cfg_sg_seg_cnt) { 2531 WARN_ON_ONCE(lpfc_cmd->seg_cnt > phba->cfg_sg_seg_cnt); 2532 ret = 2; 2533 goto err; 2534 } 2535 2536 prot_group_type = lpfc_prot_group_type(phba, scsi_cmnd); 2537 2538 switch (prot_group_type) { 2539 case LPFC_PG_TYPE_NO_DIF: 2540 2541 /* Here we need to add a PDE5 and PDE6 to the count */ 2542 if ((lpfc_cmd->seg_cnt + 2) > phba->cfg_total_seg_cnt) { 2543 ret = 2; 2544 goto err; 2545 } 2546 2547 num_bde = lpfc_bg_setup_bpl(phba, scsi_cmnd, bpl, 2548 datasegcnt); 2549 /* we should have 2 or more entries in buffer list */ 2550 if (num_bde < 2) { 2551 ret = 2; 2552 goto err; 2553 } 2554 break; 2555 2556 case LPFC_PG_TYPE_DIF_BUF: 2557 /* 2558 * This type indicates that protection buffers are 2559 * passed to the driver, so that needs to be prepared 2560 * for DMA 2561 */ 2562 protsegcnt = dma_map_sg(&phba->pcidev->dev, 2563 scsi_prot_sglist(scsi_cmnd), 2564 scsi_prot_sg_count(scsi_cmnd), datadir); 2565 if (unlikely(!protsegcnt)) { 2566 scsi_dma_unmap(scsi_cmnd); 2567 return 1; 2568 } 2569 2570 lpfc_cmd->prot_seg_cnt = protsegcnt; 2571 2572 /* 2573 * There is a minimun of 4 BPLs used for every 2574 * protection data segment. 2575 */ 2576 if ((lpfc_cmd->prot_seg_cnt * 4) > 2577 (phba->cfg_total_seg_cnt - 2)) { 2578 ret = 2; 2579 goto err; 2580 } 2581 2582 num_bde = lpfc_bg_setup_bpl_prot(phba, scsi_cmnd, bpl, 2583 datasegcnt, protsegcnt); 2584 /* we should have 3 or more entries in buffer list */ 2585 if ((num_bde < 3) || 2586 (num_bde > phba->cfg_total_seg_cnt)) { 2587 ret = 2; 2588 goto err; 2589 } 2590 break; 2591 2592 case LPFC_PG_TYPE_INVALID: 2593 default: 2594 scsi_dma_unmap(scsi_cmnd); 2595 lpfc_cmd->seg_cnt = 0; 2596 2597 lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT, 2598 "9022 Unexpected protection group %i\n", 2599 prot_group_type); 2600 return 2; 2601 } 2602 } 2603 2604 /* 2605 * Finish initializing those IOCB fields that are dependent on the 2606 * scsi_cmnd request_buffer. Note that the bdeSize is explicitly 2607 * reinitialized since all iocb memory resources are used many times 2608 * for transmit, receive, and continuation bpl's. 2609 */ 2610 iocb_cmd->un.fcpi64.bdl.bdeSize = (2 * sizeof(struct ulp_bde64)); 2611 iocb_cmd->un.fcpi64.bdl.bdeSize += (num_bde * sizeof(struct ulp_bde64)); 2612 iocb_cmd->ulpBdeCount = 1; 2613 iocb_cmd->ulpLe = 1; 2614 2615 fcpdl = lpfc_bg_scsi_adjust_dl(phba, lpfc_cmd); 2616 fcp_cmnd->fcpDl = cpu_to_be32(fcpdl); 2617 2618 /* 2619 * Due to difference in data length between DIF/non-DIF paths, 2620 * we need to set word 4 of IOCB here 2621 */ 2622 iocb_cmd->un.fcpi.fcpi_parm = fcpdl; 2623 2624 /* 2625 * For First burst, we may need to adjust the initial transfer 2626 * length for DIF 2627 */ 2628 if (iocb_cmd->un.fcpi.fcpi_XRdy && 2629 (fcpdl < vport->cfg_first_burst_size)) 2630 iocb_cmd->un.fcpi.fcpi_XRdy = fcpdl; 2631 2632 return 0; 2633err: 2634 if (lpfc_cmd->seg_cnt) 2635 scsi_dma_unmap(scsi_cmnd); 2636 if (lpfc_cmd->prot_seg_cnt) 2637 dma_unmap_sg(&phba->pcidev->dev, scsi_prot_sglist(scsi_cmnd), 2638 scsi_prot_sg_count(scsi_cmnd), 2639 scsi_cmnd->sc_data_direction); 2640 2641 lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT, 2642 "9023 Cannot setup S/G List for HBA" 2643 "IO segs %d/%d BPL %d SCSI %d: %d %d\n", 2644 lpfc_cmd->seg_cnt, lpfc_cmd->prot_seg_cnt, 2645 phba->cfg_total_seg_cnt, phba->cfg_sg_seg_cnt, 2646 prot_group_type, num_bde); 2647 2648 lpfc_cmd->seg_cnt = 0; 2649 lpfc_cmd->prot_seg_cnt = 0; 2650 return ret; 2651} 2652 2653/* 2654 * This function calcuates the T10 DIF guard tag 2655 * on the specified data using a CRC algorithmn 2656 * using crc_t10dif. 2657 */ 2658static uint16_t 2659lpfc_bg_crc(uint8_t *data, int count) 2660{ 2661 uint16_t crc = 0; 2662 uint16_t x; 2663 2664 crc = crc_t10dif(data, count); 2665 x = cpu_to_be16(crc); 2666 return x; 2667} 2668 2669/* 2670 * This function calcuates the T10 DIF guard tag 2671 * on the specified data using a CSUM algorithmn 2672 * using ip_compute_csum. 2673 */ 2674static uint16_t 2675lpfc_bg_csum(uint8_t *data, int count) 2676{ 2677 uint16_t ret; 2678 2679 ret = ip_compute_csum(data, count); 2680 return ret; 2681} 2682 2683/* 2684 * This function examines the protection data to try to determine 2685 * what type of T10-DIF error occurred. 2686 */ 2687static void 2688lpfc_calc_bg_err(struct lpfc_hba *phba, struct lpfc_io_buf *lpfc_cmd) 2689{ 2690 struct scatterlist *sgpe; /* s/g prot entry */ 2691 struct scatterlist *sgde; /* s/g data entry */ 2692 struct scsi_cmnd *cmd = lpfc_cmd->pCmd; 2693 struct scsi_dif_tuple *src = NULL; 2694 uint8_t *data_src = NULL; 2695 uint16_t guard_tag; 2696 uint16_t start_app_tag, app_tag; 2697 uint32_t start_ref_tag, ref_tag; 2698 int prot, protsegcnt; 2699 int err_type, len, data_len; 2700 int chk_ref, chk_app, chk_guard; 2701 uint16_t sum; 2702 unsigned blksize; 2703 2704 err_type = BGS_GUARD_ERR_MASK; 2705 sum = 0; 2706 guard_tag = 0; 2707 2708 /* First check to see if there is protection data to examine */ 2709 prot = scsi_get_prot_op(cmd); 2710 if ((prot == SCSI_PROT_READ_STRIP) || 2711 (prot == SCSI_PROT_WRITE_INSERT) || 2712 (prot == SCSI_PROT_NORMAL)) 2713 goto out; 2714 2715 /* Currently the driver just supports ref_tag and guard_tag checking */ 2716 chk_ref = 1; 2717 chk_app = 0; 2718 chk_guard = 0; 2719 2720 /* Setup a ptr to the protection data provided by the SCSI host */ 2721 sgpe = scsi_prot_sglist(cmd); 2722 protsegcnt = lpfc_cmd->prot_seg_cnt; 2723 2724 if (sgpe && protsegcnt) { 2725 2726 /* 2727 * We will only try to verify guard tag if the segment 2728 * data length is a multiple of the blksize. 2729 */ 2730 sgde = scsi_sglist(cmd); 2731 blksize = scsi_prot_interval(cmd); 2732 data_src = (uint8_t *)sg_virt(sgde); 2733 data_len = sg_dma_len(sgde); 2734 if ((data_len & (blksize - 1)) == 0) 2735 chk_guard = 1; 2736 2737 src = (struct scsi_dif_tuple *)sg_virt(sgpe); 2738 start_ref_tag = scsi_prot_ref_tag(cmd); 2739 start_app_tag = src->app_tag; 2740 len = sg_dma_len(sgpe); 2741 while (src && protsegcnt) { 2742 while (len) { 2743 2744 /* 2745 * First check to see if a protection data 2746 * check is valid 2747 */ 2748 if ((src->ref_tag == T10_PI_REF_ESCAPE) || 2749 (src->app_tag == T10_PI_APP_ESCAPE)) { 2750 start_ref_tag++; 2751 goto skipit; 2752 } 2753 2754 /* First Guard Tag checking */ 2755 if (chk_guard) { 2756 guard_tag = src->guard_tag; 2757 if (cmd->prot_flags 2758 & SCSI_PROT_IP_CHECKSUM) 2759 sum = lpfc_bg_csum(data_src, 2760 blksize); 2761 else 2762 sum = lpfc_bg_crc(data_src, 2763 blksize); 2764 if ((guard_tag != sum)) { 2765 err_type = BGS_GUARD_ERR_MASK; 2766 goto out; 2767 } 2768 } 2769 2770 /* Reference Tag checking */ 2771 ref_tag = be32_to_cpu(src->ref_tag); 2772 if (chk_ref && (ref_tag != start_ref_tag)) { 2773 err_type = BGS_REFTAG_ERR_MASK; 2774 goto out; 2775 } 2776 start_ref_tag++; 2777 2778 /* App Tag checking */ 2779 app_tag = src->app_tag; 2780 if (chk_app && (app_tag != start_app_tag)) { 2781 err_type = BGS_APPTAG_ERR_MASK; 2782 goto out; 2783 } 2784skipit: 2785 len -= sizeof(struct scsi_dif_tuple); 2786 if (len < 0) 2787 len = 0; 2788 src++; 2789 2790 data_src += blksize; 2791 data_len -= blksize; 2792 2793 /* 2794 * Are we at the end of the Data segment? 2795 * The data segment is only used for Guard 2796 * tag checking. 2797 */ 2798 if (chk_guard && (data_len == 0)) { 2799 chk_guard = 0; 2800 sgde = sg_next(sgde); 2801 if (!sgde) 2802 goto out; 2803 2804 data_src = (uint8_t *)sg_virt(sgde); 2805 data_len = sg_dma_len(sgde); 2806 if ((data_len & (blksize - 1)) == 0) 2807 chk_guard = 1; 2808 } 2809 } 2810 2811 /* Goto the next Protection data segment */ 2812 sgpe = sg_next(sgpe); 2813 if (sgpe) { 2814 src = (struct scsi_dif_tuple *)sg_virt(sgpe); 2815 len = sg_dma_len(sgpe); 2816 } else { 2817 src = NULL; 2818 } 2819 protsegcnt--; 2820 } 2821 } 2822out: 2823 if (err_type == BGS_GUARD_ERR_MASK) { 2824 scsi_build_sense(cmd, 1, ILLEGAL_REQUEST, 0x10, 0x1); 2825 set_host_byte(cmd, DID_ABORT); 2826 phba->bg_guard_err_cnt++; 2827 lpfc_printf_log(phba, KERN_WARNING, LOG_FCP | LOG_BG, 2828 "9069 BLKGRD: reftag %x grd_tag err %x != %x\n", 2829 scsi_prot_ref_tag(cmd), 2830 sum, guard_tag); 2831 2832 } else if (err_type == BGS_REFTAG_ERR_MASK) { 2833 scsi_build_sense(cmd, 1, ILLEGAL_REQUEST, 0x10, 0x3); 2834 set_host_byte(cmd, DID_ABORT); 2835 2836 phba->bg_reftag_err_cnt++; 2837 lpfc_printf_log(phba, KERN_WARNING, LOG_FCP | LOG_BG, 2838 "9066 BLKGRD: reftag %x ref_tag err %x != %x\n", 2839 scsi_prot_ref_tag(cmd), 2840 ref_tag, start_ref_tag); 2841 2842 } else if (err_type == BGS_APPTAG_ERR_MASK) { 2843 scsi_build_sense(cmd, 1, ILLEGAL_REQUEST, 0x10, 0x2); 2844 set_host_byte(cmd, DID_ABORT); 2845 2846 phba->bg_apptag_err_cnt++; 2847 lpfc_printf_log(phba, KERN_WARNING, LOG_FCP | LOG_BG, 2848 "9041 BLKGRD: reftag %x app_tag err %x != %x\n", 2849 scsi_prot_ref_tag(cmd), 2850 app_tag, start_app_tag); 2851 } 2852} 2853 2854/* 2855 * This function checks for BlockGuard errors detected by 2856 * the HBA. In case of errors, the ASC/ASCQ fields in the 2857 * sense buffer will be set accordingly, paired with 2858 * ILLEGAL_REQUEST to signal to the kernel that the HBA 2859 * detected corruption. 2860 * 2861 * Returns: 2862 * 0 - No error found 2863 * 1 - BlockGuard error found 2864 * -1 - Internal error (bad profile, ...etc) 2865 */ 2866static int 2867lpfc_parse_bg_err(struct lpfc_hba *phba, struct lpfc_io_buf *lpfc_cmd, 2868 struct lpfc_iocbq *pIocbOut) 2869{ 2870 struct scsi_cmnd *cmd = lpfc_cmd->pCmd; 2871 struct sli3_bg_fields *bgf; 2872 int ret = 0; 2873 struct lpfc_wcqe_complete *wcqe; 2874 u32 status; 2875 u32 bghm = 0; 2876 u32 bgstat = 0; 2877 u64 failing_sector = 0; 2878 2879 if (phba->sli_rev == LPFC_SLI_REV4) { 2880 wcqe = &pIocbOut->wcqe_cmpl; 2881 status = bf_get(lpfc_wcqe_c_status, wcqe); 2882 2883 if (status == CQE_STATUS_DI_ERROR) { 2884 /* Guard Check failed */ 2885 if (bf_get(lpfc_wcqe_c_bg_ge, wcqe)) 2886 bgstat |= BGS_GUARD_ERR_MASK; 2887 2888 /* AppTag Check failed */ 2889 if (bf_get(lpfc_wcqe_c_bg_ae, wcqe)) 2890 bgstat |= BGS_APPTAG_ERR_MASK; 2891 2892 /* RefTag Check failed */ 2893 if (bf_get(lpfc_wcqe_c_bg_re, wcqe)) 2894 bgstat |= BGS_REFTAG_ERR_MASK; 2895 2896 /* Check to see if there was any good data before the 2897 * error 2898 */ 2899 if (bf_get(lpfc_wcqe_c_bg_tdpv, wcqe)) { 2900 bgstat |= BGS_HI_WATER_MARK_PRESENT_MASK; 2901 bghm = wcqe->total_data_placed; 2902 } 2903 2904 /* 2905 * Set ALL the error bits to indicate we don't know what 2906 * type of error it is. 2907 */ 2908 if (!bgstat) 2909 bgstat |= (BGS_REFTAG_ERR_MASK | 2910 BGS_APPTAG_ERR_MASK | 2911 BGS_GUARD_ERR_MASK); 2912 } 2913 2914 } else { 2915 bgf = &pIocbOut->iocb.unsli3.sli3_bg; 2916 bghm = bgf->bghm; 2917 bgstat = bgf->bgstat; 2918 } 2919 2920 if (lpfc_bgs_get_invalid_prof(bgstat)) { 2921 cmd->result = DID_ERROR << 16; 2922 lpfc_printf_log(phba, KERN_WARNING, LOG_FCP | LOG_BG, 2923 "9072 BLKGRD: Invalid BG Profile in cmd " 2924 "0x%x reftag 0x%x blk cnt 0x%x " 2925 "bgstat=x%x bghm=x%x\n", cmd->cmnd[0], 2926 scsi_prot_ref_tag(cmd), 2927 scsi_logical_block_count(cmd), bgstat, bghm); 2928 ret = (-1); 2929 goto out; 2930 } 2931 2932 if (lpfc_bgs_get_uninit_dif_block(bgstat)) { 2933 cmd->result = DID_ERROR << 16; 2934 lpfc_printf_log(phba, KERN_WARNING, LOG_FCP | LOG_BG, 2935 "9073 BLKGRD: Invalid BG PDIF Block in cmd " 2936 "0x%x reftag 0x%x blk cnt 0x%x " 2937 "bgstat=x%x bghm=x%x\n", cmd->cmnd[0], 2938 scsi_prot_ref_tag(cmd), 2939 scsi_logical_block_count(cmd), bgstat, bghm); 2940 ret = (-1); 2941 goto out; 2942 } 2943 2944 if (lpfc_bgs_get_guard_err(bgstat)) { 2945 ret = 1; 2946 scsi_build_sense(cmd, 1, ILLEGAL_REQUEST, 0x10, 0x1); 2947 set_host_byte(cmd, DID_ABORT); 2948 phba->bg_guard_err_cnt++; 2949 lpfc_printf_log(phba, KERN_WARNING, LOG_FCP | LOG_BG, 2950 "9055 BLKGRD: Guard Tag error in cmd " 2951 "0x%x reftag 0x%x blk cnt 0x%x " 2952 "bgstat=x%x bghm=x%x\n", cmd->cmnd[0], 2953 scsi_prot_ref_tag(cmd), 2954 scsi_logical_block_count(cmd), bgstat, bghm); 2955 } 2956 2957 if (lpfc_bgs_get_reftag_err(bgstat)) { 2958 ret = 1; 2959 scsi_build_sense(cmd, 1, ILLEGAL_REQUEST, 0x10, 0x3); 2960 set_host_byte(cmd, DID_ABORT); 2961 phba->bg_reftag_err_cnt++; 2962 lpfc_printf_log(phba, KERN_WARNING, LOG_FCP | LOG_BG, 2963 "9056 BLKGRD: Ref Tag error in cmd " 2964 "0x%x reftag 0x%x blk cnt 0x%x " 2965 "bgstat=x%x bghm=x%x\n", cmd->cmnd[0], 2966 scsi_prot_ref_tag(cmd), 2967 scsi_logical_block_count(cmd), bgstat, bghm); 2968 } 2969 2970 if (lpfc_bgs_get_apptag_err(bgstat)) { 2971 ret = 1; 2972 scsi_build_sense(cmd, 1, ILLEGAL_REQUEST, 0x10, 0x2); 2973 set_host_byte(cmd, DID_ABORT); 2974 phba->bg_apptag_err_cnt++; 2975 lpfc_printf_log(phba, KERN_WARNING, LOG_FCP | LOG_BG, 2976 "9061 BLKGRD: App Tag error in cmd " 2977 "0x%x reftag 0x%x blk cnt 0x%x " 2978 "bgstat=x%x bghm=x%x\n", cmd->cmnd[0], 2979 scsi_prot_ref_tag(cmd), 2980 scsi_logical_block_count(cmd), bgstat, bghm); 2981 } 2982 2983 if (lpfc_bgs_get_hi_water_mark_present(bgstat)) { 2984 /* 2985 * setup sense data descriptor 0 per SPC-4 as an information 2986 * field, and put the failing LBA in it. 2987 * This code assumes there was also a guard/app/ref tag error 2988 * indication. 2989 */ 2990 cmd->sense_buffer[7] = 0xc; /* Additional sense length */ 2991 cmd->sense_buffer[8] = 0; /* Information descriptor type */ 2992 cmd->sense_buffer[9] = 0xa; /* Additional descriptor length */ 2993 cmd->sense_buffer[10] = 0x80; /* Validity bit */ 2994 2995 /* bghm is a "on the wire" FC frame based count */ 2996 switch (scsi_get_prot_op(cmd)) { 2997 case SCSI_PROT_READ_INSERT: 2998 case SCSI_PROT_WRITE_STRIP: 2999 bghm /= cmd->device->sector_size; 3000 break; 3001 case SCSI_PROT_READ_STRIP: 3002 case SCSI_PROT_WRITE_INSERT: 3003 case SCSI_PROT_READ_PASS: 3004 case SCSI_PROT_WRITE_PASS: 3005 bghm /= (cmd->device->sector_size + 3006 sizeof(struct scsi_dif_tuple)); 3007 break; 3008 } 3009 3010 failing_sector = scsi_get_lba(cmd); 3011 failing_sector += bghm; 3012 3013 /* Descriptor Information */ 3014 put_unaligned_be64(failing_sector, &cmd->sense_buffer[12]); 3015 } 3016 3017 if (!ret) { 3018 /* No error was reported - problem in FW? */ 3019 lpfc_printf_log(phba, KERN_WARNING, LOG_FCP | LOG_BG, 3020 "9057 BLKGRD: Unknown error in cmd " 3021 "0x%x reftag 0x%x blk cnt 0x%x " 3022 "bgstat=x%x bghm=x%x\n", cmd->cmnd[0], 3023 scsi_prot_ref_tag(cmd), 3024 scsi_logical_block_count(cmd), bgstat, bghm); 3025 3026 /* Calculate what type of error it was */ 3027 lpfc_calc_bg_err(phba, lpfc_cmd); 3028 } 3029out: 3030 return ret; 3031} 3032 3033/** 3034 * lpfc_scsi_prep_dma_buf_s4 - DMA mapping for scsi buffer to SLI4 IF spec 3035 * @phba: The Hba for which this call is being executed. 3036 * @lpfc_cmd: The scsi buffer which is going to be mapped. 3037 * 3038 * This routine does the pci dma mapping for scatter-gather list of scsi cmnd 3039 * field of @lpfc_cmd for device with SLI-4 interface spec. 3040 * 3041 * Return codes: 3042 * 2 - Error - Do not retry 3043 * 1 - Error - Retry 3044 * 0 - Success 3045 **/ 3046static int 3047lpfc_scsi_prep_dma_buf_s4(struct lpfc_hba *phba, struct lpfc_io_buf *lpfc_cmd) 3048{ 3049 struct scsi_cmnd *scsi_cmnd = lpfc_cmd->pCmd; 3050 struct scatterlist *sgel = NULL; 3051 struct fcp_cmnd *fcp_cmnd = lpfc_cmd->fcp_cmnd; 3052 struct sli4_sge *sgl = (struct sli4_sge *)lpfc_cmd->dma_sgl; 3053 struct sli4_sge *first_data_sgl; 3054 struct lpfc_iocbq *pwqeq = &lpfc_cmd->cur_iocbq; 3055 struct lpfc_vport *vport = phba->pport; 3056 union lpfc_wqe128 *wqe = &pwqeq->wqe; 3057 dma_addr_t physaddr; 3058 uint32_t dma_len; 3059 uint32_t dma_offset = 0; 3060 int nseg, i, j; 3061 struct ulp_bde64 *bde; 3062 bool lsp_just_set = false; 3063 struct sli4_hybrid_sgl *sgl_xtra = NULL; 3064 3065 /* 3066 * There are three possibilities here - use scatter-gather segment, use 3067 * the single mapping, or neither. Start the lpfc command prep by 3068 * bumping the bpl beyond the fcp_cmnd and fcp_rsp regions to the first 3069 * data bde entry. 3070 */ 3071 if (scsi_sg_count(scsi_cmnd)) { 3072 /* 3073 * The driver stores the segment count returned from dma_map_sg 3074 * because this a count of dma-mappings used to map the use_sg 3075 * pages. They are not guaranteed to be the same for those 3076 * architectures that implement an IOMMU. 3077 */ 3078 3079 nseg = scsi_dma_map(scsi_cmnd); 3080 if (unlikely(nseg <= 0)) 3081 return 1; 3082 sgl += 1; 3083 /* clear the last flag in the fcp_rsp map entry */ 3084 sgl->word2 = le32_to_cpu(sgl->word2); 3085 bf_set(lpfc_sli4_sge_last, sgl, 0); 3086 sgl->word2 = cpu_to_le32(sgl->word2); 3087 sgl += 1; 3088 first_data_sgl = sgl; 3089 lpfc_cmd->seg_cnt = nseg; 3090 if (!phba->cfg_xpsgl && 3091 lpfc_cmd->seg_cnt > phba->cfg_sg_seg_cnt) { 3092 lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT, 3093 "9074 BLKGRD:" 3094 " %s: Too many sg segments from " 3095 "dma_map_sg. Config %d, seg_cnt %d\n", 3096 __func__, phba->cfg_sg_seg_cnt, 3097 lpfc_cmd->seg_cnt); 3098 WARN_ON_ONCE(lpfc_cmd->seg_cnt > phba->cfg_sg_seg_cnt); 3099 lpfc_cmd->seg_cnt = 0; 3100 scsi_dma_unmap(scsi_cmnd); 3101 return 2; 3102 } 3103 3104 /* 3105 * The driver established a maximum scatter-gather segment count 3106 * during probe that limits the number of sg elements in any 3107 * single scsi command. Just run through the seg_cnt and format 3108 * the sge's. 3109 * When using SLI-3 the driver will try to fit all the BDEs into 3110 * the IOCB. If it can't then the BDEs get added to a BPL as it 3111 * does for SLI-2 mode. 3112 */ 3113 3114 /* for tracking segment boundaries */ 3115 sgel = scsi_sglist(scsi_cmnd); 3116 j = 2; 3117 for (i = 0; i < nseg; i++) { 3118 sgl->word2 = 0; 3119 if (nseg == 1) { 3120 bf_set(lpfc_sli4_sge_last, sgl, 1); 3121 bf_set(lpfc_sli4_sge_type, sgl, 3122 LPFC_SGE_TYPE_DATA); 3123 } else { 3124 bf_set(lpfc_sli4_sge_last, sgl, 0); 3125 3126 /* do we need to expand the segment */ 3127 if (!lsp_just_set && 3128 !((j + 1) % phba->border_sge_num) && 3129 ((nseg - 1) != i)) { 3130 /* set LSP type */ 3131 bf_set(lpfc_sli4_sge_type, sgl, 3132 LPFC_SGE_TYPE_LSP); 3133 3134 sgl_xtra = lpfc_get_sgl_per_hdwq( 3135 phba, lpfc_cmd); 3136 3137 if (unlikely(!sgl_xtra)) { 3138 lpfc_cmd->seg_cnt = 0; 3139 scsi_dma_unmap(scsi_cmnd); 3140 return 1; 3141 } 3142 sgl->addr_lo = cpu_to_le32(putPaddrLow( 3143 sgl_xtra->dma_phys_sgl)); 3144 sgl->addr_hi = cpu_to_le32(putPaddrHigh( 3145 sgl_xtra->dma_phys_sgl)); 3146 3147 } else { 3148 bf_set(lpfc_sli4_sge_type, sgl, 3149 LPFC_SGE_TYPE_DATA); 3150 } 3151 } 3152 3153 if (!(bf_get(lpfc_sli4_sge_type, sgl) & 3154 LPFC_SGE_TYPE_LSP)) { 3155 if ((nseg - 1) == i) 3156 bf_set(lpfc_sli4_sge_last, sgl, 1); 3157 3158 physaddr = sg_dma_address(sgel); 3159 dma_len = sg_dma_len(sgel); 3160 sgl->addr_lo = cpu_to_le32(putPaddrLow( 3161 physaddr)); 3162 sgl->addr_hi = cpu_to_le32(putPaddrHigh( 3163 physaddr)); 3164 3165 bf_set(lpfc_sli4_sge_offset, sgl, dma_offset); 3166 sgl->word2 = cpu_to_le32(sgl->word2); 3167 sgl->sge_len = cpu_to_le32(dma_len); 3168 3169 dma_offset += dma_len; 3170 sgel = sg_next(sgel); 3171 3172 sgl++; 3173 lsp_just_set = false; 3174 3175 } else { 3176 sgl->word2 = cpu_to_le32(sgl->word2); 3177 sgl->sge_len = cpu_to_le32( 3178 phba->cfg_sg_dma_buf_size); 3179 3180 sgl = (struct sli4_sge *)sgl_xtra->dma_sgl; 3181 i = i - 1; 3182 3183 lsp_just_set = true; 3184 } 3185 3186 j++; 3187 } 3188 3189 /* PBDE support for first data SGE only. 3190 * For FCoE, we key off Performance Hints. 3191 * For FC, we key off lpfc_enable_pbde. 3192 */ 3193 if (nseg == 1 && 3194 ((phba->sli3_options & LPFC_SLI4_PERFH_ENABLED) || 3195 phba->cfg_enable_pbde)) { 3196 /* Words 13-15 */ 3197 bde = (struct ulp_bde64 *) 3198 &wqe->words[13]; 3199 bde->addrLow = first_data_sgl->addr_lo; 3200 bde->addrHigh = first_data_sgl->addr_hi; 3201 bde->tus.f.bdeSize = 3202 le32_to_cpu(first_data_sgl->sge_len); 3203 bde->tus.f.bdeFlags = BUFF_TYPE_BDE_64; 3204 bde->tus.w = cpu_to_le32(bde->tus.w); 3205 3206 /* Word 11 - set PBDE bit */ 3207 bf_set(wqe_pbde, &wqe->generic.wqe_com, 1); 3208 } else { 3209 memset(&wqe->words[13], 0, (sizeof(uint32_t) * 3)); 3210 /* Word 11 - PBDE bit disabled by default template */ 3211 } 3212 } else { 3213 sgl += 1; 3214 /* set the last flag in the fcp_rsp map entry */ 3215 sgl->word2 = le32_to_cpu(sgl->word2); 3216 bf_set(lpfc_sli4_sge_last, sgl, 1); 3217 sgl->word2 = cpu_to_le32(sgl->word2); 3218 3219 if ((phba->sli3_options & LPFC_SLI4_PERFH_ENABLED) || 3220 phba->cfg_enable_pbde) { 3221 bde = (struct ulp_bde64 *) 3222 &wqe->words[13]; 3223 memset(bde, 0, (sizeof(uint32_t) * 3)); 3224 } 3225 } 3226 3227 /* 3228 * Finish initializing those IOCB fields that are dependent on the 3229 * scsi_cmnd request_buffer. Note that for SLI-2 the bdeSize is 3230 * explicitly reinitialized. 3231 * all iocb memory resources are reused. 3232 */ 3233 if (scsi_cmnd->cmd_len > LPFC_FCP_CDB_LEN) 3234 ((struct fcp_cmnd32 *)fcp_cmnd)->fcpDl = 3235 cpu_to_be32(scsi_bufflen(scsi_cmnd)); 3236 else 3237 fcp_cmnd->fcpDl = cpu_to_be32(scsi_bufflen(scsi_cmnd)); 3238 /* Set first-burst provided it was successfully negotiated */ 3239 if (!test_bit(HBA_FCOE_MODE, &phba->hba_flag) && 3240 vport->cfg_first_burst_size && 3241 scsi_cmnd->sc_data_direction == DMA_TO_DEVICE) { 3242 u32 init_len, total_len; 3243 3244 total_len = scsi_bufflen(scsi_cmnd); 3245 init_len = min(total_len, vport->cfg_first_burst_size); 3246 3247 /* Word 4 & 5 */ 3248 wqe->fcp_iwrite.initial_xfer_len = init_len; 3249 wqe->fcp_iwrite.total_xfer_len = total_len; 3250 } else { 3251 /* Word 4 */ 3252 wqe->fcp_iwrite.total_xfer_len = 3253 be32_to_cpu(fcp_cmnd->fcpDl); 3254 } 3255 3256 /* 3257 * If the OAS driver feature is enabled and the lun is enabled for 3258 * OAS, set the oas iocb related flags. 3259 */ 3260 if ((phba->cfg_fof) && ((struct lpfc_device_data *) 3261 scsi_cmnd->device->hostdata)->oas_enabled) { 3262 lpfc_cmd->cur_iocbq.cmd_flag |= (LPFC_IO_OAS | LPFC_IO_FOF); 3263 lpfc_cmd->cur_iocbq.priority = ((struct lpfc_device_data *) 3264 scsi_cmnd->device->hostdata)->priority; 3265 3266 /* Word 10 */ 3267 bf_set(wqe_oas, &wqe->generic.wqe_com, 1); 3268 bf_set(wqe_ccpe, &wqe->generic.wqe_com, 1); 3269 3270 if (lpfc_cmd->cur_iocbq.priority) 3271 bf_set(wqe_ccp, &wqe->generic.wqe_com, 3272 (lpfc_cmd->cur_iocbq.priority << 1)); 3273 else 3274 bf_set(wqe_ccp, &wqe->generic.wqe_com, 3275 (phba->cfg_XLanePriority << 1)); 3276 } 3277 3278 return 0; 3279} 3280 3281/** 3282 * lpfc_bg_scsi_prep_dma_buf_s4 - DMA mapping for scsi buffer to SLI4 IF spec 3283 * @phba: The Hba for which this call is being executed. 3284 * @lpfc_cmd: The scsi buffer which is going to be mapped. 3285 * 3286 * This is the protection/DIF aware version of 3287 * lpfc_scsi_prep_dma_buf(). It may be a good idea to combine the 3288 * two functions eventually, but for now, it's here 3289 * Return codes: 3290 * 2 - Error - Do not retry 3291 * 1 - Error - Retry 3292 * 0 - Success 3293 **/ 3294static int 3295lpfc_bg_scsi_prep_dma_buf_s4(struct lpfc_hba *phba, 3296 struct lpfc_io_buf *lpfc_cmd) 3297{ 3298 struct scsi_cmnd *scsi_cmnd = lpfc_cmd->pCmd; 3299 struct fcp_cmnd *fcp_cmnd = lpfc_cmd->fcp_cmnd; 3300 struct sli4_sge *sgl = (struct sli4_sge *)(lpfc_cmd->dma_sgl); 3301 struct lpfc_iocbq *pwqeq = &lpfc_cmd->cur_iocbq; 3302 union lpfc_wqe128 *wqe = &pwqeq->wqe; 3303 uint32_t num_sge = 0; 3304 int datasegcnt, protsegcnt, datadir = scsi_cmnd->sc_data_direction; 3305 int prot_group_type = 0; 3306 int fcpdl; 3307 int ret = 1; 3308 struct lpfc_vport *vport = phba->pport; 3309 3310 /* 3311 * Start the lpfc command prep by bumping the sgl beyond fcp_cmnd 3312 * fcp_rsp regions to the first data sge entry 3313 */ 3314 if (scsi_sg_count(scsi_cmnd)) { 3315 /* 3316 * The driver stores the segment count returned from dma_map_sg 3317 * because this a count of dma-mappings used to map the use_sg 3318 * pages. They are not guaranteed to be the same for those 3319 * architectures that implement an IOMMU. 3320 */ 3321 datasegcnt = dma_map_sg(&phba->pcidev->dev, 3322 scsi_sglist(scsi_cmnd), 3323 scsi_sg_count(scsi_cmnd), datadir); 3324 if (unlikely(!datasegcnt)) 3325 return 1; 3326 3327 sgl += 1; 3328 /* clear the last flag in the fcp_rsp map entry */ 3329 sgl->word2 = le32_to_cpu(sgl->word2); 3330 bf_set(lpfc_sli4_sge_last, sgl, 0); 3331 sgl->word2 = cpu_to_le32(sgl->word2); 3332 3333 sgl += 1; 3334 lpfc_cmd->seg_cnt = datasegcnt; 3335 3336 /* First check if data segment count from SCSI Layer is good */ 3337 if (lpfc_cmd->seg_cnt > phba->cfg_sg_seg_cnt && 3338 !phba->cfg_xpsgl) { 3339 WARN_ON_ONCE(lpfc_cmd->seg_cnt > phba->cfg_sg_seg_cnt); 3340 ret = 2; 3341 goto err; 3342 } 3343 3344 prot_group_type = lpfc_prot_group_type(phba, scsi_cmnd); 3345 3346 switch (prot_group_type) { 3347 case LPFC_PG_TYPE_NO_DIF: 3348 /* Here we need to add a DISEED to the count */ 3349 if (((lpfc_cmd->seg_cnt + 1) > 3350 phba->cfg_total_seg_cnt) && 3351 !phba->cfg_xpsgl) { 3352 ret = 2; 3353 goto err; 3354 } 3355 3356 num_sge = lpfc_bg_setup_sgl(phba, scsi_cmnd, sgl, 3357 datasegcnt, lpfc_cmd); 3358 3359 /* we should have 2 or more entries in buffer list */ 3360 if (num_sge < 2) { 3361 ret = 2; 3362 goto err; 3363 } 3364 break; 3365 3366 case LPFC_PG_TYPE_DIF_BUF: 3367 /* 3368 * This type indicates that protection buffers are 3369 * passed to the driver, so that needs to be prepared 3370 * for DMA 3371 */ 3372 protsegcnt = dma_map_sg(&phba->pcidev->dev, 3373 scsi_prot_sglist(scsi_cmnd), 3374 scsi_prot_sg_count(scsi_cmnd), datadir); 3375 if (unlikely(!protsegcnt)) { 3376 scsi_dma_unmap(scsi_cmnd); 3377 return 1; 3378 } 3379 3380 lpfc_cmd->prot_seg_cnt = protsegcnt; 3381 /* 3382 * There is a minimun of 3 SGEs used for every 3383 * protection data segment. 3384 */ 3385 if (((lpfc_cmd->prot_seg_cnt * 3) > 3386 (phba->cfg_total_seg_cnt - 2)) && 3387 !phba->cfg_xpsgl) { 3388 ret = 2; 3389 goto err; 3390 } 3391 3392 num_sge = lpfc_bg_setup_sgl_prot(phba, scsi_cmnd, sgl, 3393 datasegcnt, protsegcnt, lpfc_cmd); 3394 3395 /* we should have 3 or more entries in buffer list */ 3396 if (num_sge < 3 || 3397 (num_sge > phba->cfg_total_seg_cnt && 3398 !phba->cfg_xpsgl)) { 3399 ret = 2; 3400 goto err; 3401 } 3402 break; 3403 3404 case LPFC_PG_TYPE_INVALID: 3405 default: 3406 scsi_dma_unmap(scsi_cmnd); 3407 lpfc_cmd->seg_cnt = 0; 3408 3409 lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT, 3410 "9083 Unexpected protection group %i\n", 3411 prot_group_type); 3412 return 2; 3413 } 3414 } 3415 3416 switch (scsi_get_prot_op(scsi_cmnd)) { 3417 case SCSI_PROT_WRITE_STRIP: 3418 case SCSI_PROT_READ_STRIP: 3419 lpfc_cmd->cur_iocbq.cmd_flag |= LPFC_IO_DIF_STRIP; 3420 break; 3421 case SCSI_PROT_WRITE_INSERT: 3422 case SCSI_PROT_READ_INSERT: 3423 lpfc_cmd->cur_iocbq.cmd_flag |= LPFC_IO_DIF_INSERT; 3424 break; 3425 case SCSI_PROT_WRITE_PASS: 3426 case SCSI_PROT_READ_PASS: 3427 lpfc_cmd->cur_iocbq.cmd_flag |= LPFC_IO_DIF_PASS; 3428 break; 3429 } 3430 3431 fcpdl = lpfc_bg_scsi_adjust_dl(phba, lpfc_cmd); 3432 if (lpfc_cmd->pCmd->cmd_len > LPFC_FCP_CDB_LEN) 3433 ((struct fcp_cmnd32 *)fcp_cmnd)->fcpDl = cpu_to_be32(fcpdl); 3434 else 3435 fcp_cmnd->fcpDl = cpu_to_be32(fcpdl); 3436 3437 /* Set first-burst provided it was successfully negotiated */ 3438 if (!test_bit(HBA_FCOE_MODE, &phba->hba_flag) && 3439 vport->cfg_first_burst_size && 3440 scsi_cmnd->sc_data_direction == DMA_TO_DEVICE) { 3441 u32 init_len, total_len; 3442 3443 total_len = fcpdl; 3444 init_len = min(total_len, vport->cfg_first_burst_size); 3445 3446 /* Word 4 & 5 */ 3447 wqe->fcp_iwrite.initial_xfer_len = init_len; 3448 wqe->fcp_iwrite.total_xfer_len = total_len; 3449 } else { 3450 /* Word 4 */ 3451 wqe->fcp_iwrite.total_xfer_len = fcpdl; 3452 } 3453 3454 /* 3455 * If the OAS driver feature is enabled and the lun is enabled for 3456 * OAS, set the oas iocb related flags. 3457 */ 3458 if ((phba->cfg_fof) && ((struct lpfc_device_data *) 3459 scsi_cmnd->device->hostdata)->oas_enabled) { 3460 lpfc_cmd->cur_iocbq.cmd_flag |= (LPFC_IO_OAS | LPFC_IO_FOF); 3461 3462 /* Word 10 */ 3463 bf_set(wqe_oas, &wqe->generic.wqe_com, 1); 3464 bf_set(wqe_ccpe, &wqe->generic.wqe_com, 1); 3465 bf_set(wqe_ccp, &wqe->generic.wqe_com, 3466 (phba->cfg_XLanePriority << 1)); 3467 } 3468 3469 /* Word 7. DIF Flags */ 3470 if (lpfc_cmd->cur_iocbq.cmd_flag & LPFC_IO_DIF_PASS) 3471 bf_set(wqe_dif, &wqe->generic.wqe_com, LPFC_WQE_DIF_PASSTHRU); 3472 else if (lpfc_cmd->cur_iocbq.cmd_flag & LPFC_IO_DIF_STRIP) 3473 bf_set(wqe_dif, &wqe->generic.wqe_com, LPFC_WQE_DIF_STRIP); 3474 else if (lpfc_cmd->cur_iocbq.cmd_flag & LPFC_IO_DIF_INSERT) 3475 bf_set(wqe_dif, &wqe->generic.wqe_com, LPFC_WQE_DIF_INSERT); 3476 3477 lpfc_cmd->cur_iocbq.cmd_flag &= ~(LPFC_IO_DIF_PASS | 3478 LPFC_IO_DIF_STRIP | LPFC_IO_DIF_INSERT); 3479 3480 return 0; 3481err: 3482 if (lpfc_cmd->seg_cnt) 3483 scsi_dma_unmap(scsi_cmnd); 3484 if (lpfc_cmd->prot_seg_cnt) 3485 dma_unmap_sg(&phba->pcidev->dev, scsi_prot_sglist(scsi_cmnd), 3486 scsi_prot_sg_count(scsi_cmnd), 3487 scsi_cmnd->sc_data_direction); 3488 3489 lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT, 3490 "9084 Cannot setup S/G List for HBA " 3491 "IO segs %d/%d SGL %d SCSI %d: %d %d %d\n", 3492 lpfc_cmd->seg_cnt, lpfc_cmd->prot_seg_cnt, 3493 phba->cfg_total_seg_cnt, phba->cfg_sg_seg_cnt, 3494 prot_group_type, num_sge, ret); 3495 3496 lpfc_cmd->seg_cnt = 0; 3497 lpfc_cmd->prot_seg_cnt = 0; 3498 return ret; 3499} 3500 3501/** 3502 * lpfc_scsi_prep_dma_buf - Wrapper function for DMA mapping of scsi buffer 3503 * @phba: The Hba for which this call is being executed. 3504 * @lpfc_cmd: The scsi buffer which is going to be mapped. 3505 * 3506 * This routine wraps the actual DMA mapping function pointer from the 3507 * lpfc_hba struct. 3508 * 3509 * Return codes: 3510 * 1 - Error 3511 * 0 - Success 3512 **/ 3513static inline int 3514lpfc_scsi_prep_dma_buf(struct lpfc_hba *phba, struct lpfc_io_buf *lpfc_cmd) 3515{ 3516 return phba->lpfc_scsi_prep_dma_buf(phba, lpfc_cmd); 3517} 3518 3519/** 3520 * lpfc_bg_scsi_prep_dma_buf - Wrapper function for DMA mapping of scsi buffer 3521 * using BlockGuard. 3522 * @phba: The Hba for which this call is being executed. 3523 * @lpfc_cmd: The scsi buffer which is going to be mapped. 3524 * 3525 * This routine wraps the actual DMA mapping function pointer from the 3526 * lpfc_hba struct. 3527 * 3528 * Return codes: 3529 * 1 - Error 3530 * 0 - Success 3531 **/ 3532static inline int 3533lpfc_bg_scsi_prep_dma_buf(struct lpfc_hba *phba, struct lpfc_io_buf *lpfc_cmd) 3534{ 3535 return phba->lpfc_bg_scsi_prep_dma_buf(phba, lpfc_cmd); 3536} 3537 3538/** 3539 * lpfc_scsi_prep_cmnd_buf - Wrapper function for IOCB/WQE mapping of scsi 3540 * buffer 3541 * @vport: Pointer to vport object. 3542 * @lpfc_cmd: The scsi buffer which is going to be mapped. 3543 * @tmo: Timeout value for IO 3544 * 3545 * This routine initializes IOCB/WQE data structure from scsi command 3546 * 3547 * Return codes: 3548 * 1 - Error 3549 * 0 - Success 3550 **/ 3551static inline int 3552lpfc_scsi_prep_cmnd_buf(struct lpfc_vport *vport, struct lpfc_io_buf *lpfc_cmd, 3553 uint8_t tmo) 3554{ 3555 return vport->phba->lpfc_scsi_prep_cmnd_buf(vport, lpfc_cmd, tmo); 3556} 3557 3558/** 3559 * lpfc_send_scsi_error_event - Posts an event when there is SCSI error 3560 * @phba: Pointer to hba context object. 3561 * @vport: Pointer to vport object. 3562 * @lpfc_cmd: Pointer to lpfc scsi command which reported the error. 3563 * @fcpi_parm: FCP Initiator parameter. 3564 * 3565 * This function posts an event when there is a SCSI command reporting 3566 * error from the scsi device. 3567 **/ 3568static void 3569lpfc_send_scsi_error_event(struct lpfc_hba *phba, struct lpfc_vport *vport, 3570 struct lpfc_io_buf *lpfc_cmd, uint32_t fcpi_parm) { 3571 struct scsi_cmnd *cmnd = lpfc_cmd->pCmd; 3572 struct fcp_rsp *fcprsp = lpfc_cmd->fcp_rsp; 3573 uint32_t resp_info = fcprsp->rspStatus2; 3574 uint32_t scsi_status = fcprsp->rspStatus3; 3575 struct lpfc_fast_path_event *fast_path_evt = NULL; 3576 struct lpfc_nodelist *pnode = lpfc_cmd->rdata->pnode; 3577 unsigned long flags; 3578 3579 if (!pnode) 3580 return; 3581 3582 /* If there is queuefull or busy condition send a scsi event */ 3583 if ((cmnd->result == SAM_STAT_TASK_SET_FULL) || 3584 (cmnd->result == SAM_STAT_BUSY)) { 3585 fast_path_evt = lpfc_alloc_fast_evt(phba); 3586 if (!fast_path_evt) 3587 return; 3588 fast_path_evt->un.scsi_evt.event_type = 3589 FC_REG_SCSI_EVENT; 3590 fast_path_evt->un.scsi_evt.subcategory = 3591 (cmnd->result == SAM_STAT_TASK_SET_FULL) ? 3592 LPFC_EVENT_QFULL : LPFC_EVENT_DEVBSY; 3593 fast_path_evt->un.scsi_evt.lun = cmnd->device->lun; 3594 memcpy(&fast_path_evt->un.scsi_evt.wwpn, 3595 &pnode->nlp_portname, sizeof(struct lpfc_name)); 3596 memcpy(&fast_path_evt->un.scsi_evt.wwnn, 3597 &pnode->nlp_nodename, sizeof(struct lpfc_name)); 3598 } else if ((resp_info & SNS_LEN_VALID) && fcprsp->rspSnsLen && 3599 ((cmnd->cmnd[0] == READ_10) || (cmnd->cmnd[0] == WRITE_10))) { 3600 fast_path_evt = lpfc_alloc_fast_evt(phba); 3601 if (!fast_path_evt) 3602 return; 3603 fast_path_evt->un.check_cond_evt.scsi_event.event_type = 3604 FC_REG_SCSI_EVENT; 3605 fast_path_evt->un.check_cond_evt.scsi_event.subcategory = 3606 LPFC_EVENT_CHECK_COND; 3607 fast_path_evt->un.check_cond_evt.scsi_event.lun = 3608 cmnd->device->lun; 3609 memcpy(&fast_path_evt->un.check_cond_evt.scsi_event.wwpn, 3610 &pnode->nlp_portname, sizeof(struct lpfc_name)); 3611 memcpy(&fast_path_evt->un.check_cond_evt.scsi_event.wwnn, 3612 &pnode->nlp_nodename, sizeof(struct lpfc_name)); 3613 fast_path_evt->un.check_cond_evt.sense_key = 3614 cmnd->sense_buffer[2] & 0xf; 3615 fast_path_evt->un.check_cond_evt.asc = cmnd->sense_buffer[12]; 3616 fast_path_evt->un.check_cond_evt.ascq = cmnd->sense_buffer[13]; 3617 } else if ((cmnd->sc_data_direction == DMA_FROM_DEVICE) && 3618 fcpi_parm && 3619 ((be32_to_cpu(fcprsp->rspResId) != fcpi_parm) || 3620 ((scsi_status == SAM_STAT_GOOD) && 3621 !(resp_info & (RESID_UNDER | RESID_OVER))))) { 3622 /* 3623 * If status is good or resid does not match with fcp_param and 3624 * there is valid fcpi_parm, then there is a read_check error 3625 */ 3626 fast_path_evt = lpfc_alloc_fast_evt(phba); 3627 if (!fast_path_evt) 3628 return; 3629 fast_path_evt->un.read_check_error.header.event_type = 3630 FC_REG_FABRIC_EVENT; 3631 fast_path_evt->un.read_check_error.header.subcategory = 3632 LPFC_EVENT_FCPRDCHKERR; 3633 memcpy(&fast_path_evt->un.read_check_error.header.wwpn, 3634 &pnode->nlp_portname, sizeof(struct lpfc_name)); 3635 memcpy(&fast_path_evt->un.read_check_error.header.wwnn, 3636 &pnode->nlp_nodename, sizeof(struct lpfc_name)); 3637 fast_path_evt->un.read_check_error.lun = cmnd->device->lun; 3638 fast_path_evt->un.read_check_error.opcode = cmnd->cmnd[0]; 3639 fast_path_evt->un.read_check_error.fcpiparam = 3640 fcpi_parm; 3641 } else 3642 return; 3643 3644 fast_path_evt->vport = vport; 3645 spin_lock_irqsave(&phba->hbalock, flags); 3646 list_add_tail(&fast_path_evt->work_evt.evt_listp, &phba->work_list); 3647 spin_unlock_irqrestore(&phba->hbalock, flags); 3648 lpfc_worker_wake_up(phba); 3649 return; 3650} 3651 3652/** 3653 * lpfc_scsi_unprep_dma_buf - Un-map DMA mapping of SG-list for dev 3654 * @phba: The HBA for which this call is being executed. 3655 * @psb: The scsi buffer which is going to be un-mapped. 3656 * 3657 * This routine does DMA un-mapping of scatter gather list of scsi command 3658 * field of @lpfc_cmd for device with SLI-3 interface spec. 3659 **/ 3660static void 3661lpfc_scsi_unprep_dma_buf(struct lpfc_hba *phba, struct lpfc_io_buf *psb) 3662{ 3663 /* 3664 * There are only two special cases to consider. (1) the scsi command 3665 * requested scatter-gather usage or (2) the scsi command allocated 3666 * a request buffer, but did not request use_sg. There is a third 3667 * case, but it does not require resource deallocation. 3668 */ 3669 if (psb->seg_cnt > 0) 3670 scsi_dma_unmap(psb->pCmd); 3671 if (psb->prot_seg_cnt > 0) 3672 dma_unmap_sg(&phba->pcidev->dev, scsi_prot_sglist(psb->pCmd), 3673 scsi_prot_sg_count(psb->pCmd), 3674 psb->pCmd->sc_data_direction); 3675} 3676 3677/** 3678 * lpfc_unblock_requests - allow further commands to be queued. 3679 * @phba: pointer to phba object 3680 * 3681 * For single vport, just call scsi_unblock_requests on physical port. 3682 * For multiple vports, send scsi_unblock_requests for all the vports. 3683 */ 3684void 3685lpfc_unblock_requests(struct lpfc_hba *phba) 3686{ 3687 struct lpfc_vport **vports; 3688 struct Scsi_Host *shost; 3689 int i; 3690 3691 if (phba->sli_rev == LPFC_SLI_REV4 && 3692 !phba->sli4_hba.max_cfg_param.vpi_used) { 3693 shost = lpfc_shost_from_vport(phba->pport); 3694 scsi_unblock_requests(shost); 3695 return; 3696 } 3697 3698 vports = lpfc_create_vport_work_array(phba); 3699 if (vports != NULL) 3700 for (i = 0; i <= phba->max_vports && vports[i] != NULL; i++) { 3701 shost = lpfc_shost_from_vport(vports[i]); 3702 scsi_unblock_requests(shost); 3703 } 3704 lpfc_destroy_vport_work_array(phba, vports); 3705} 3706 3707/** 3708 * lpfc_block_requests - prevent further commands from being queued. 3709 * @phba: pointer to phba object 3710 * 3711 * For single vport, just call scsi_block_requests on physical port. 3712 * For multiple vports, send scsi_block_requests for all the vports. 3713 */ 3714void 3715lpfc_block_requests(struct lpfc_hba *phba) 3716{ 3717 struct lpfc_vport **vports; 3718 struct Scsi_Host *shost; 3719 int i; 3720 3721 if (atomic_read(&phba->cmf_stop_io)) 3722 return; 3723 3724 if (phba->sli_rev == LPFC_SLI_REV4 && 3725 !phba->sli4_hba.max_cfg_param.vpi_used) { 3726 shost = lpfc_shost_from_vport(phba->pport); 3727 scsi_block_requests(shost); 3728 return; 3729 } 3730 3731 vports = lpfc_create_vport_work_array(phba); 3732 if (vports != NULL) 3733 for (i = 0; i <= phba->max_vports && vports[i] != NULL; i++) { 3734 shost = lpfc_shost_from_vport(vports[i]); 3735 scsi_block_requests(shost); 3736 } 3737 lpfc_destroy_vport_work_array(phba, vports); 3738} 3739 3740/** 3741 * lpfc_update_cmf_cmpl - Adjust CMF counters for IO completion 3742 * @phba: The HBA for which this call is being executed. 3743 * @time: The latency of the IO that completed (in ns) 3744 * @size: The size of the IO that completed 3745 * @shost: SCSI host the IO completed on (NULL for a NVME IO) 3746 * 3747 * The routine adjusts the various Burst and Bandwidth counters used in 3748 * Congestion management and E2E. If time is set to LPFC_CGN_NOT_SENT, 3749 * that means the IO was never issued to the HBA, so this routine is 3750 * just being called to cleanup the counter from a previous 3751 * lpfc_update_cmf_cmd call. 3752 */ 3753int 3754lpfc_update_cmf_cmpl(struct lpfc_hba *phba, 3755 uint64_t time, uint32_t size, struct Scsi_Host *shost) 3756{ 3757 struct lpfc_cgn_stat *cgs; 3758 3759 if (time != LPFC_CGN_NOT_SENT) { 3760 /* lat is ns coming in, save latency in us */ 3761 if (time < 1000) 3762 time = 1; 3763 else 3764 time = div_u64(time + 500, 1000); /* round it */ 3765 3766 cgs = per_cpu_ptr(phba->cmf_stat, raw_smp_processor_id()); 3767 atomic64_add(size, &cgs->rcv_bytes); 3768 atomic64_add(time, &cgs->rx_latency); 3769 atomic_inc(&cgs->rx_io_cnt); 3770 } 3771 return 0; 3772} 3773 3774/** 3775 * lpfc_update_cmf_cmd - Adjust CMF counters for IO submission 3776 * @phba: The HBA for which this call is being executed. 3777 * @size: The size of the IO that will be issued 3778 * 3779 * The routine adjusts the various Burst and Bandwidth counters used in 3780 * Congestion management and E2E. 3781 */ 3782int 3783lpfc_update_cmf_cmd(struct lpfc_hba *phba, uint32_t size) 3784{ 3785 uint64_t total; 3786 struct lpfc_cgn_stat *cgs; 3787 int cpu; 3788 3789 /* At this point we are either LPFC_CFG_MANAGED or LPFC_CFG_MONITOR */ 3790 if (phba->cmf_active_mode == LPFC_CFG_MANAGED && 3791 phba->cmf_max_bytes_per_interval) { 3792 total = 0; 3793 for_each_present_cpu(cpu) { 3794 cgs = per_cpu_ptr(phba->cmf_stat, cpu); 3795 total += atomic64_read(&cgs->total_bytes); 3796 } 3797 if (total >= phba->cmf_max_bytes_per_interval) { 3798 if (!atomic_xchg(&phba->cmf_bw_wait, 1)) { 3799 lpfc_block_requests(phba); 3800 phba->cmf_last_ts = 3801 lpfc_calc_cmf_latency(phba); 3802 } 3803 atomic_inc(&phba->cmf_busy); 3804 return -EBUSY; 3805 } 3806 if (size > atomic_read(&phba->rx_max_read_cnt)) 3807 atomic_set(&phba->rx_max_read_cnt, size); 3808 } 3809 3810 cgs = per_cpu_ptr(phba->cmf_stat, raw_smp_processor_id()); 3811 atomic64_add(size, &cgs->total_bytes); 3812 return 0; 3813} 3814 3815/** 3816 * lpfc_handle_fcp_err - FCP response handler 3817 * @vport: The virtual port for which this call is being executed. 3818 * @lpfc_cmd: Pointer to lpfc_io_buf data structure. 3819 * @fcpi_parm: FCP Initiator parameter. 3820 * 3821 * This routine is called to process response IOCB with status field 3822 * IOSTAT_FCP_RSP_ERROR. This routine sets result field of scsi command 3823 * based upon SCSI and FCP error. 3824 **/ 3825static void 3826lpfc_handle_fcp_err(struct lpfc_vport *vport, struct lpfc_io_buf *lpfc_cmd, 3827 uint32_t fcpi_parm) 3828{ 3829 struct scsi_cmnd *cmnd = lpfc_cmd->pCmd; 3830 struct fcp_cmnd *fcpcmd = lpfc_cmd->fcp_cmnd; 3831 struct fcp_rsp *fcprsp = lpfc_cmd->fcp_rsp; 3832 uint32_t resp_info = fcprsp->rspStatus2; 3833 uint32_t scsi_status = fcprsp->rspStatus3; 3834 uint32_t *lp; 3835 uint32_t host_status = DID_OK; 3836 uint32_t rsplen = 0; 3837 uint32_t fcpDl; 3838 uint32_t logit = LOG_FCP | LOG_FCP_ERROR; 3839 3840 3841 /* 3842 * If this is a task management command, there is no 3843 * scsi packet associated with this lpfc_cmd. The driver 3844 * consumes it. 3845 */ 3846 if (fcpcmd->fcpCntl2) { 3847 scsi_status = 0; 3848 goto out; 3849 } 3850 3851 if (resp_info & RSP_LEN_VALID) { 3852 rsplen = be32_to_cpu(fcprsp->rspRspLen); 3853 if (rsplen != 0 && rsplen != 4 && rsplen != 8) { 3854 lpfc_printf_vlog(vport, KERN_ERR, LOG_TRACE_EVENT, 3855 "2719 Invalid response length: " 3856 "tgt x%x lun x%llx cmnd x%x rsplen " 3857 "x%x\n", cmnd->device->id, 3858 cmnd->device->lun, cmnd->cmnd[0], 3859 rsplen); 3860 host_status = DID_ERROR; 3861 goto out; 3862 } 3863 if (fcprsp->rspInfo3 != RSP_NO_FAILURE) { 3864 lpfc_printf_vlog(vport, KERN_ERR, LOG_TRACE_EVENT, 3865 "2757 Protocol failure detected during " 3866 "processing of FCP I/O op: " 3867 "tgt x%x lun x%llx cmnd x%x rspInfo3 x%x\n", 3868 cmnd->device->id, 3869 cmnd->device->lun, cmnd->cmnd[0], 3870 fcprsp->rspInfo3); 3871 host_status = DID_ERROR; 3872 goto out; 3873 } 3874 } 3875 3876 if ((resp_info & SNS_LEN_VALID) && fcprsp->rspSnsLen) { 3877 uint32_t snslen = be32_to_cpu(fcprsp->rspSnsLen); 3878 if (snslen > SCSI_SENSE_BUFFERSIZE) 3879 snslen = SCSI_SENSE_BUFFERSIZE; 3880 3881 if (resp_info & RSP_LEN_VALID) 3882 rsplen = be32_to_cpu(fcprsp->rspRspLen); 3883 memcpy(cmnd->sense_buffer, &fcprsp->rspInfo0 + rsplen, snslen); 3884 } 3885 lp = (uint32_t *)cmnd->sense_buffer; 3886 3887 /* special handling for under run conditions */ 3888 if (!scsi_status && (resp_info & RESID_UNDER)) { 3889 /* don't log under runs if fcp set... */ 3890 if (vport->cfg_log_verbose & LOG_FCP) 3891 logit = LOG_FCP_ERROR; 3892 /* unless operator says so */ 3893 if (vport->cfg_log_verbose & LOG_FCP_UNDER) 3894 logit = LOG_FCP_UNDER; 3895 } 3896 3897 lpfc_printf_vlog(vport, KERN_WARNING, logit, 3898 "9024 FCP command x%x failed: x%x SNS x%x x%x " 3899 "Data: x%x x%x x%x x%x x%x\n", 3900 cmnd->cmnd[0], scsi_status, 3901 be32_to_cpu(*lp), be32_to_cpu(*(lp + 3)), resp_info, 3902 be32_to_cpu(fcprsp->rspResId), 3903 be32_to_cpu(fcprsp->rspSnsLen), 3904 be32_to_cpu(fcprsp->rspRspLen), 3905 fcprsp->rspInfo3); 3906 3907 scsi_set_resid(cmnd, 0); 3908 if (cmnd->cmd_len > LPFC_FCP_CDB_LEN) 3909 fcpDl = be32_to_cpu(((struct fcp_cmnd32 *)fcpcmd)->fcpDl); 3910 else 3911 fcpDl = be32_to_cpu(fcpcmd->fcpDl); 3912 if (resp_info & RESID_UNDER) { 3913 scsi_set_resid(cmnd, be32_to_cpu(fcprsp->rspResId)); 3914 3915 lpfc_printf_vlog(vport, KERN_INFO, LOG_FCP_UNDER, 3916 "9025 FCP Underrun, expected %d, " 3917 "residual %d Data: x%x x%x x%x\n", 3918 fcpDl, 3919 scsi_get_resid(cmnd), fcpi_parm, cmnd->cmnd[0], 3920 cmnd->underflow); 3921 3922 /* 3923 * If there is an under run, check if under run reported by 3924 * storage array is same as the under run reported by HBA. 3925 * If this is not same, there is a dropped frame. 3926 */ 3927 if (fcpi_parm && (scsi_get_resid(cmnd) != fcpi_parm)) { 3928 lpfc_printf_vlog(vport, KERN_WARNING, 3929 LOG_FCP | LOG_FCP_ERROR, 3930 "9026 FCP Read Check Error " 3931 "and Underrun Data: x%x x%x x%x x%x\n", 3932 fcpDl, 3933 scsi_get_resid(cmnd), fcpi_parm, 3934 cmnd->cmnd[0]); 3935 scsi_set_resid(cmnd, scsi_bufflen(cmnd)); 3936 host_status = DID_ERROR; 3937 } 3938 /* 3939 * The cmnd->underflow is the minimum number of bytes that must 3940 * be transferred for this command. Provided a sense condition 3941 * is not present, make sure the actual amount transferred is at 3942 * least the underflow value or fail. 3943 */ 3944 if (!(resp_info & SNS_LEN_VALID) && 3945 (scsi_status == SAM_STAT_GOOD) && 3946 (scsi_bufflen(cmnd) - scsi_get_resid(cmnd) 3947 < cmnd->underflow)) { 3948 lpfc_printf_vlog(vport, KERN_INFO, LOG_FCP, 3949 "9027 FCP command x%x residual " 3950 "underrun converted to error " 3951 "Data: x%x x%x x%x\n", 3952 cmnd->cmnd[0], scsi_bufflen(cmnd), 3953 scsi_get_resid(cmnd), cmnd->underflow); 3954 host_status = DID_ERROR; 3955 } 3956 } else if (resp_info & RESID_OVER) { 3957 lpfc_printf_vlog(vport, KERN_WARNING, LOG_FCP, 3958 "9028 FCP command x%x residual overrun error. " 3959 "Data: x%x x%x\n", cmnd->cmnd[0], 3960 scsi_bufflen(cmnd), scsi_get_resid(cmnd)); 3961 host_status = DID_ERROR; 3962 3963 /* 3964 * Check SLI validation that all the transfer was actually done 3965 * (fcpi_parm should be zero). Apply check only to reads. 3966 */ 3967 } else if (fcpi_parm) { 3968 lpfc_printf_vlog(vport, KERN_WARNING, LOG_FCP | LOG_FCP_ERROR, 3969 "9029 FCP %s Check Error Data: " 3970 "x%x x%x x%x x%x x%x\n", 3971 ((cmnd->sc_data_direction == DMA_FROM_DEVICE) ? 3972 "Read" : "Write"), 3973 fcpDl, be32_to_cpu(fcprsp->rspResId), 3974 fcpi_parm, cmnd->cmnd[0], scsi_status); 3975 3976 /* There is some issue with the LPe12000 that causes it 3977 * to miscalculate the fcpi_parm and falsely trip this 3978 * recovery logic. Detect this case and don't error when true. 3979 */ 3980 if (fcpi_parm > fcpDl) 3981 goto out; 3982 3983 switch (scsi_status) { 3984 case SAM_STAT_GOOD: 3985 case SAM_STAT_CHECK_CONDITION: 3986 /* Fabric dropped a data frame. Fail any successful 3987 * command in which we detected dropped frames. 3988 * A status of good or some check conditions could 3989 * be considered a successful command. 3990 */ 3991 host_status = DID_ERROR; 3992 break; 3993 } 3994 scsi_set_resid(cmnd, scsi_bufflen(cmnd)); 3995 } 3996 3997 out: 3998 cmnd->result = host_status << 16 | scsi_status; 3999 lpfc_send_scsi_error_event(vport->phba, vport, lpfc_cmd, fcpi_parm); 4000} 4001 4002/** 4003 * lpfc_fcp_io_cmd_wqe_cmpl - Complete a FCP IO 4004 * @phba: The hba for which this call is being executed. 4005 * @pwqeIn: The command WQE for the scsi cmnd. 4006 * @pwqeOut: Pointer to driver response WQE object. 4007 * 4008 * This routine assigns scsi command result by looking into response WQE 4009 * status field appropriately. This routine handles QUEUE FULL condition as 4010 * well by ramping down device queue depth. 4011 **/ 4012static void 4013lpfc_fcp_io_cmd_wqe_cmpl(struct lpfc_hba *phba, struct lpfc_iocbq *pwqeIn, 4014 struct lpfc_iocbq *pwqeOut) 4015{ 4016 struct lpfc_io_buf *lpfc_cmd = pwqeIn->io_buf; 4017 struct lpfc_wcqe_complete *wcqe = &pwqeOut->wcqe_cmpl; 4018 struct lpfc_vport *vport = pwqeIn->vport; 4019 struct lpfc_rport_data *rdata; 4020 struct lpfc_nodelist *ndlp; 4021 struct scsi_cmnd *cmd; 4022 unsigned long flags; 4023 struct lpfc_fast_path_event *fast_path_evt; 4024 struct Scsi_Host *shost; 4025 u32 logit = LOG_FCP; 4026 u32 idx; 4027 u32 lat; 4028 u8 wait_xb_clr = 0; 4029 4030 /* Sanity check on return of outstanding command */ 4031 if (!lpfc_cmd) { 4032 lpfc_printf_vlog(vport, KERN_ERR, LOG_TRACE_EVENT, 4033 "9032 Null lpfc_cmd pointer. No " 4034 "release, skip completion\n"); 4035 return; 4036 } 4037 4038 rdata = lpfc_cmd->rdata; 4039 ndlp = rdata->pnode; 4040 4041 /* Sanity check on return of outstanding command */ 4042 cmd = lpfc_cmd->pCmd; 4043 if (!cmd) { 4044 lpfc_printf_vlog(vport, KERN_ERR, LOG_TRACE_EVENT, 4045 "9042 I/O completion: Not an active IO\n"); 4046 lpfc_release_scsi_buf(phba, lpfc_cmd); 4047 return; 4048 } 4049 /* Guard against abort handler being called at same time */ 4050 spin_lock(&lpfc_cmd->buf_lock); 4051 idx = lpfc_cmd->cur_iocbq.hba_wqidx; 4052 if (phba->sli4_hba.hdwq) 4053 phba->sli4_hba.hdwq[idx].scsi_cstat.io_cmpls++; 4054 4055#ifdef CONFIG_SCSI_LPFC_DEBUG_FS 4056 if (unlikely(phba->hdwqstat_on & LPFC_CHECK_SCSI_IO)) 4057 this_cpu_inc(phba->sli4_hba.c_stat->cmpl_io); 4058#endif 4059 shost = cmd->device->host; 4060 4061 lpfc_cmd->status = bf_get(lpfc_wcqe_c_status, wcqe); 4062 lpfc_cmd->result = (wcqe->parameter & IOERR_PARAM_MASK); 4063 4064 lpfc_cmd->flags &= ~LPFC_SBUF_XBUSY; 4065 if (bf_get(lpfc_wcqe_c_xb, wcqe)) { 4066 lpfc_cmd->flags |= LPFC_SBUF_XBUSY; 4067 if (phba->cfg_fcp_wait_abts_rsp) 4068 wait_xb_clr = 1; 4069 } 4070 4071#ifdef CONFIG_SCSI_LPFC_DEBUG_FS 4072 if (lpfc_cmd->prot_data_type) { 4073 struct scsi_dif_tuple *src = NULL; 4074 4075 src = (struct scsi_dif_tuple *)lpfc_cmd->prot_data_segment; 4076 /* 4077 * Used to restore any changes to protection 4078 * data for error injection. 4079 */ 4080 switch (lpfc_cmd->prot_data_type) { 4081 case LPFC_INJERR_REFTAG: 4082 src->ref_tag = 4083 lpfc_cmd->prot_data; 4084 break; 4085 case LPFC_INJERR_APPTAG: 4086 src->app_tag = 4087 (uint16_t)lpfc_cmd->prot_data; 4088 break; 4089 case LPFC_INJERR_GUARD: 4090 src->guard_tag = 4091 (uint16_t)lpfc_cmd->prot_data; 4092 break; 4093 default: 4094 break; 4095 } 4096 4097 lpfc_cmd->prot_data = 0; 4098 lpfc_cmd->prot_data_type = 0; 4099 lpfc_cmd->prot_data_segment = NULL; 4100 } 4101#endif 4102 if (unlikely(lpfc_cmd->status)) { 4103 if (lpfc_cmd->status == IOSTAT_FCP_RSP_ERROR && 4104 !lpfc_cmd->fcp_rsp->rspStatus3 && 4105 (lpfc_cmd->fcp_rsp->rspStatus2 & RESID_UNDER) && 4106 !(vport->cfg_log_verbose & LOG_FCP_UNDER)) 4107 logit = 0; 4108 else 4109 logit = LOG_FCP | LOG_FCP_UNDER; 4110 lpfc_printf_vlog(vport, KERN_WARNING, logit, 4111 "9034 FCP cmd x%x failed <%d/%lld> " 4112 "status: x%x result: x%x " 4113 "sid: x%x did: x%x oxid: x%x " 4114 "Data: x%x x%x x%x\n", 4115 cmd->cmnd[0], 4116 cmd->device ? cmd->device->id : 0xffff, 4117 cmd->device ? cmd->device->lun : 0xffff, 4118 lpfc_cmd->status, lpfc_cmd->result, 4119 vport->fc_myDID, 4120 (ndlp) ? ndlp->nlp_DID : 0, 4121 lpfc_cmd->cur_iocbq.sli4_xritag, 4122 wcqe->parameter, wcqe->total_data_placed, 4123 lpfc_cmd->cur_iocbq.iotag); 4124 } 4125 4126 switch (lpfc_cmd->status) { 4127 case CQE_STATUS_SUCCESS: 4128 cmd->result = DID_OK << 16; 4129 break; 4130 case CQE_STATUS_FCP_RSP_FAILURE: 4131 lpfc_handle_fcp_err(vport, lpfc_cmd, 4132 pwqeIn->wqe.fcp_iread.total_xfer_len - 4133 wcqe->total_data_placed); 4134 break; 4135 case CQE_STATUS_NPORT_BSY: 4136 case CQE_STATUS_FABRIC_BSY: 4137 cmd->result = DID_TRANSPORT_DISRUPTED << 16; 4138 fast_path_evt = lpfc_alloc_fast_evt(phba); 4139 if (!fast_path_evt) 4140 break; 4141 fast_path_evt->un.fabric_evt.event_type = 4142 FC_REG_FABRIC_EVENT; 4143 fast_path_evt->un.fabric_evt.subcategory = 4144 (lpfc_cmd->status == IOSTAT_NPORT_BSY) ? 4145 LPFC_EVENT_PORT_BUSY : LPFC_EVENT_FABRIC_BUSY; 4146 if (ndlp) { 4147 memcpy(&fast_path_evt->un.fabric_evt.wwpn, 4148 &ndlp->nlp_portname, 4149 sizeof(struct lpfc_name)); 4150 memcpy(&fast_path_evt->un.fabric_evt.wwnn, 4151 &ndlp->nlp_nodename, 4152 sizeof(struct lpfc_name)); 4153 } 4154 fast_path_evt->vport = vport; 4155 fast_path_evt->work_evt.evt = 4156 LPFC_EVT_FASTPATH_MGMT_EVT; 4157 spin_lock_irqsave(&phba->hbalock, flags); 4158 list_add_tail(&fast_path_evt->work_evt.evt_listp, 4159 &phba->work_list); 4160 spin_unlock_irqrestore(&phba->hbalock, flags); 4161 lpfc_worker_wake_up(phba); 4162 lpfc_printf_vlog(vport, KERN_WARNING, logit, 4163 "9035 Fabric/Node busy FCP cmd x%x failed" 4164 " <%d/%lld> " 4165 "status: x%x result: x%x " 4166 "sid: x%x did: x%x oxid: x%x " 4167 "Data: x%x x%x x%x\n", 4168 cmd->cmnd[0], 4169 cmd->device ? cmd->device->id : 0xffff, 4170 cmd->device ? cmd->device->lun : 0xffff, 4171 lpfc_cmd->status, lpfc_cmd->result, 4172 vport->fc_myDID, 4173 (ndlp) ? ndlp->nlp_DID : 0, 4174 lpfc_cmd->cur_iocbq.sli4_xritag, 4175 wcqe->parameter, 4176 wcqe->total_data_placed, 4177 lpfc_cmd->cur_iocbq.iocb.ulpIoTag); 4178 break; 4179 case CQE_STATUS_DI_ERROR: 4180 if (bf_get(lpfc_wcqe_c_bg_edir, wcqe)) 4181 lpfc_cmd->result = IOERR_RX_DMA_FAILED; 4182 else 4183 lpfc_cmd->result = IOERR_TX_DMA_FAILED; 4184 lpfc_printf_vlog(vport, KERN_WARNING, LOG_FCP | LOG_BG, 4185 "9048 DI Error xri x%x status x%x DI ext " 4186 "status x%x data placed x%x\n", 4187 lpfc_cmd->cur_iocbq.sli4_xritag, 4188 lpfc_cmd->status, wcqe->parameter, 4189 wcqe->total_data_placed); 4190 if (scsi_get_prot_op(cmd) != SCSI_PROT_NORMAL) { 4191 /* BG enabled cmd. Parse BG error */ 4192 lpfc_parse_bg_err(phba, lpfc_cmd, pwqeOut); 4193 break; 4194 } 4195 cmd->result = DID_ERROR << 16; 4196 lpfc_printf_vlog(vport, KERN_WARNING, LOG_BG, 4197 "9040 DI Error on unprotected cmd\n"); 4198 break; 4199 case CQE_STATUS_REMOTE_STOP: 4200 if (ndlp) { 4201 /* This I/O was aborted by the target, we don't 4202 * know the rxid and because we did not send the 4203 * ABTS we cannot generate and RRQ. 4204 */ 4205 lpfc_set_rrq_active(phba, ndlp, 4206 lpfc_cmd->cur_iocbq.sli4_lxritag, 4207 0, 0); 4208 } 4209 fallthrough; 4210 case CQE_STATUS_LOCAL_REJECT: 4211 if (lpfc_cmd->result & IOERR_DRVR_MASK) 4212 lpfc_cmd->status = IOSTAT_DRIVER_REJECT; 4213 if (lpfc_cmd->result == IOERR_ELXSEC_KEY_UNWRAP_ERROR || 4214 lpfc_cmd->result == 4215 IOERR_ELXSEC_KEY_UNWRAP_COMPARE_ERROR || 4216 lpfc_cmd->result == IOERR_ELXSEC_CRYPTO_ERROR || 4217 lpfc_cmd->result == 4218 IOERR_ELXSEC_CRYPTO_COMPARE_ERROR) { 4219 cmd->result = DID_NO_CONNECT << 16; 4220 break; 4221 } 4222 if (lpfc_cmd->result == IOERR_INVALID_RPI || 4223 lpfc_cmd->result == IOERR_LINK_DOWN || 4224 lpfc_cmd->result == IOERR_NO_RESOURCES || 4225 lpfc_cmd->result == IOERR_ABORT_REQUESTED || 4226 lpfc_cmd->result == IOERR_RPI_SUSPENDED || 4227 lpfc_cmd->result == IOERR_SLER_CMD_RCV_FAILURE) { 4228 cmd->result = DID_TRANSPORT_DISRUPTED << 16; 4229 break; 4230 } 4231 lpfc_printf_vlog(vport, KERN_WARNING, logit, 4232 "9036 Local Reject FCP cmd x%x failed" 4233 " <%d/%lld> " 4234 "status: x%x result: x%x " 4235 "sid: x%x did: x%x oxid: x%x " 4236 "Data: x%x x%x x%x\n", 4237 cmd->cmnd[0], 4238 cmd->device ? cmd->device->id : 0xffff, 4239 cmd->device ? cmd->device->lun : 0xffff, 4240 lpfc_cmd->status, lpfc_cmd->result, 4241 vport->fc_myDID, 4242 (ndlp) ? ndlp->nlp_DID : 0, 4243 lpfc_cmd->cur_iocbq.sli4_xritag, 4244 wcqe->parameter, 4245 wcqe->total_data_placed, 4246 lpfc_cmd->cur_iocbq.iocb.ulpIoTag); 4247 fallthrough; 4248 default: 4249 cmd->result = DID_ERROR << 16; 4250 lpfc_printf_vlog(vport, KERN_INFO, LOG_FCP, 4251 "9037 FCP Completion Error: xri %x " 4252 "status x%x result x%x [x%x] " 4253 "placed x%x\n", 4254 lpfc_cmd->cur_iocbq.sli4_xritag, 4255 lpfc_cmd->status, lpfc_cmd->result, 4256 wcqe->parameter, 4257 wcqe->total_data_placed); 4258 } 4259 if (cmd->result || lpfc_cmd->fcp_rsp->rspSnsLen) { 4260 u32 *lp = (u32 *)cmd->sense_buffer; 4261 4262 lpfc_printf_vlog(vport, KERN_INFO, LOG_FCP, 4263 "9039 Iodone <%d/%llu> cmd x%px, error " 4264 "x%x SNS x%x x%x LBA x%llx Data: x%x x%x\n", 4265 cmd->device->id, cmd->device->lun, cmd, 4266 cmd->result, *lp, *(lp + 3), 4267 (cmd->device->sector_size) ? 4268 (u64)scsi_get_lba(cmd) : 0, 4269 cmd->retries, scsi_get_resid(cmd)); 4270 } 4271 4272 if (vport->cfg_max_scsicmpl_time && 4273 time_after(jiffies, lpfc_cmd->start_time + 4274 msecs_to_jiffies(vport->cfg_max_scsicmpl_time))) { 4275 spin_lock_irqsave(shost->host_lock, flags); 4276 if (ndlp) { 4277 if (ndlp->cmd_qdepth > 4278 atomic_read(&ndlp->cmd_pending) && 4279 (atomic_read(&ndlp->cmd_pending) > 4280 LPFC_MIN_TGT_QDEPTH) && 4281 (cmd->cmnd[0] == READ_10 || 4282 cmd->cmnd[0] == WRITE_10)) 4283 ndlp->cmd_qdepth = 4284 atomic_read(&ndlp->cmd_pending); 4285 4286 ndlp->last_change_time = jiffies; 4287 } 4288 spin_unlock_irqrestore(shost->host_lock, flags); 4289 } 4290 lpfc_scsi_unprep_dma_buf(phba, lpfc_cmd); 4291 4292#ifdef CONFIG_SCSI_LPFC_DEBUG_FS 4293 if (lpfc_cmd->ts_cmd_start) { 4294 lpfc_cmd->ts_isr_cmpl = lpfc_cmd->cur_iocbq.isr_timestamp; 4295 lpfc_cmd->ts_data_io = ktime_get_ns(); 4296 phba->ktime_last_cmd = lpfc_cmd->ts_data_io; 4297 lpfc_io_ktime(phba, lpfc_cmd); 4298 } 4299#endif 4300 if (likely(!wait_xb_clr)) 4301 lpfc_cmd->pCmd = NULL; 4302 spin_unlock(&lpfc_cmd->buf_lock); 4303 4304 /* Check if IO qualified for CMF */ 4305 if (phba->cmf_active_mode != LPFC_CFG_OFF && 4306 cmd->sc_data_direction == DMA_FROM_DEVICE && 4307 (scsi_sg_count(cmd))) { 4308 /* Used when calculating average latency */ 4309 lat = ktime_get_ns() - lpfc_cmd->rx_cmd_start; 4310 lpfc_update_cmf_cmpl(phba, lat, scsi_bufflen(cmd), shost); 4311 } 4312 4313 if (wait_xb_clr) 4314 goto out; 4315 4316 /* The sdev is not guaranteed to be valid post scsi_done upcall. */ 4317 scsi_done(cmd); 4318 4319 /* 4320 * If there is an abort thread waiting for command completion 4321 * wake up the thread. 4322 */ 4323 spin_lock(&lpfc_cmd->buf_lock); 4324 lpfc_cmd->cur_iocbq.cmd_flag &= ~LPFC_DRIVER_ABORTED; 4325 if (lpfc_cmd->waitq) 4326 wake_up(lpfc_cmd->waitq); 4327 spin_unlock(&lpfc_cmd->buf_lock); 4328out: 4329 lpfc_release_scsi_buf(phba, lpfc_cmd); 4330} 4331 4332/** 4333 * lpfc_scsi_cmd_iocb_cmpl - Scsi cmnd IOCB completion routine 4334 * @phba: The Hba for which this call is being executed. 4335 * @pIocbIn: The command IOCBQ for the scsi cmnd. 4336 * @pIocbOut: The response IOCBQ for the scsi cmnd. 4337 * 4338 * This routine assigns scsi command result by looking into response IOCB 4339 * status field appropriately. This routine handles QUEUE FULL condition as 4340 * well by ramping down device queue depth. 4341 **/ 4342static void 4343lpfc_scsi_cmd_iocb_cmpl(struct lpfc_hba *phba, struct lpfc_iocbq *pIocbIn, 4344 struct lpfc_iocbq *pIocbOut) 4345{ 4346 struct lpfc_io_buf *lpfc_cmd = 4347 (struct lpfc_io_buf *) pIocbIn->io_buf; 4348 struct lpfc_vport *vport = pIocbIn->vport; 4349 struct lpfc_rport_data *rdata = lpfc_cmd->rdata; 4350 struct lpfc_nodelist *pnode = rdata->pnode; 4351 struct scsi_cmnd *cmd; 4352 unsigned long flags; 4353 struct lpfc_fast_path_event *fast_path_evt; 4354 struct Scsi_Host *shost; 4355 int idx; 4356 uint32_t logit = LOG_FCP; 4357 4358 /* Guard against abort handler being called at same time */ 4359 spin_lock(&lpfc_cmd->buf_lock); 4360 4361 /* Sanity check on return of outstanding command */ 4362 cmd = lpfc_cmd->pCmd; 4363 if (!cmd || !phba) { 4364 lpfc_printf_vlog(vport, KERN_ERR, LOG_TRACE_EVENT, 4365 "2621 IO completion: Not an active IO\n"); 4366 spin_unlock(&lpfc_cmd->buf_lock); 4367 return; 4368 } 4369 4370 idx = lpfc_cmd->cur_iocbq.hba_wqidx; 4371 if (phba->sli4_hba.hdwq) 4372 phba->sli4_hba.hdwq[idx].scsi_cstat.io_cmpls++; 4373 4374#ifdef CONFIG_SCSI_LPFC_DEBUG_FS 4375 if (unlikely(phba->hdwqstat_on & LPFC_CHECK_SCSI_IO)) 4376 this_cpu_inc(phba->sli4_hba.c_stat->cmpl_io); 4377#endif 4378 shost = cmd->device->host; 4379 4380 lpfc_cmd->result = (pIocbOut->iocb.un.ulpWord[4] & IOERR_PARAM_MASK); 4381 lpfc_cmd->status = pIocbOut->iocb.ulpStatus; 4382 /* pick up SLI4 exchange busy status from HBA */ 4383 lpfc_cmd->flags &= ~LPFC_SBUF_XBUSY; 4384 if (pIocbOut->cmd_flag & LPFC_EXCHANGE_BUSY) 4385 lpfc_cmd->flags |= LPFC_SBUF_XBUSY; 4386 4387#ifdef CONFIG_SCSI_LPFC_DEBUG_FS 4388 if (lpfc_cmd->prot_data_type) { 4389 struct scsi_dif_tuple *src = NULL; 4390 4391 src = (struct scsi_dif_tuple *)lpfc_cmd->prot_data_segment; 4392 /* 4393 * Used to restore any changes to protection 4394 * data for error injection. 4395 */ 4396 switch (lpfc_cmd->prot_data_type) { 4397 case LPFC_INJERR_REFTAG: 4398 src->ref_tag = 4399 lpfc_cmd->prot_data; 4400 break; 4401 case LPFC_INJERR_APPTAG: 4402 src->app_tag = 4403 (uint16_t)lpfc_cmd->prot_data; 4404 break; 4405 case LPFC_INJERR_GUARD: 4406 src->guard_tag = 4407 (uint16_t)lpfc_cmd->prot_data; 4408 break; 4409 default: 4410 break; 4411 } 4412 4413 lpfc_cmd->prot_data = 0; 4414 lpfc_cmd->prot_data_type = 0; 4415 lpfc_cmd->prot_data_segment = NULL; 4416 } 4417#endif 4418 4419 if (unlikely(lpfc_cmd->status)) { 4420 if (lpfc_cmd->status == IOSTAT_LOCAL_REJECT && 4421 (lpfc_cmd->result & IOERR_DRVR_MASK)) 4422 lpfc_cmd->status = IOSTAT_DRIVER_REJECT; 4423 else if (lpfc_cmd->status >= IOSTAT_CNT) 4424 lpfc_cmd->status = IOSTAT_DEFAULT; 4425 if (lpfc_cmd->status == IOSTAT_FCP_RSP_ERROR && 4426 !lpfc_cmd->fcp_rsp->rspStatus3 && 4427 (lpfc_cmd->fcp_rsp->rspStatus2 & RESID_UNDER) && 4428 !(vport->cfg_log_verbose & LOG_FCP_UNDER)) 4429 logit = 0; 4430 else 4431 logit = LOG_FCP | LOG_FCP_UNDER; 4432 lpfc_printf_vlog(vport, KERN_WARNING, logit, 4433 "9030 FCP cmd x%x failed <%d/%lld> " 4434 "status: x%x result: x%x " 4435 "sid: x%x did: x%x oxid: x%x " 4436 "Data: x%x x%x\n", 4437 cmd->cmnd[0], 4438 cmd->device ? cmd->device->id : 0xffff, 4439 cmd->device ? cmd->device->lun : 0xffff, 4440 lpfc_cmd->status, lpfc_cmd->result, 4441 vport->fc_myDID, 4442 (pnode) ? pnode->nlp_DID : 0, 4443 phba->sli_rev == LPFC_SLI_REV4 ? 4444 lpfc_cmd->cur_iocbq.sli4_xritag : 0xffff, 4445 pIocbOut->iocb.ulpContext, 4446 lpfc_cmd->cur_iocbq.iocb.ulpIoTag); 4447 4448 switch (lpfc_cmd->status) { 4449 case IOSTAT_FCP_RSP_ERROR: 4450 /* Call FCP RSP handler to determine result */ 4451 lpfc_handle_fcp_err(vport, lpfc_cmd, 4452 pIocbOut->iocb.un.fcpi.fcpi_parm); 4453 break; 4454 case IOSTAT_NPORT_BSY: 4455 case IOSTAT_FABRIC_BSY: 4456 cmd->result = DID_TRANSPORT_DISRUPTED << 16; 4457 fast_path_evt = lpfc_alloc_fast_evt(phba); 4458 if (!fast_path_evt) 4459 break; 4460 fast_path_evt->un.fabric_evt.event_type = 4461 FC_REG_FABRIC_EVENT; 4462 fast_path_evt->un.fabric_evt.subcategory = 4463 (lpfc_cmd->status == IOSTAT_NPORT_BSY) ? 4464 LPFC_EVENT_PORT_BUSY : LPFC_EVENT_FABRIC_BUSY; 4465 if (pnode) { 4466 memcpy(&fast_path_evt->un.fabric_evt.wwpn, 4467 &pnode->nlp_portname, 4468 sizeof(struct lpfc_name)); 4469 memcpy(&fast_path_evt->un.fabric_evt.wwnn, 4470 &pnode->nlp_nodename, 4471 sizeof(struct lpfc_name)); 4472 } 4473 fast_path_evt->vport = vport; 4474 fast_path_evt->work_evt.evt = 4475 LPFC_EVT_FASTPATH_MGMT_EVT; 4476 spin_lock_irqsave(&phba->hbalock, flags); 4477 list_add_tail(&fast_path_evt->work_evt.evt_listp, 4478 &phba->work_list); 4479 spin_unlock_irqrestore(&phba->hbalock, flags); 4480 lpfc_worker_wake_up(phba); 4481 break; 4482 case IOSTAT_LOCAL_REJECT: 4483 case IOSTAT_REMOTE_STOP: 4484 if (lpfc_cmd->result == IOERR_ELXSEC_KEY_UNWRAP_ERROR || 4485 lpfc_cmd->result == 4486 IOERR_ELXSEC_KEY_UNWRAP_COMPARE_ERROR || 4487 lpfc_cmd->result == IOERR_ELXSEC_CRYPTO_ERROR || 4488 lpfc_cmd->result == 4489 IOERR_ELXSEC_CRYPTO_COMPARE_ERROR) { 4490 cmd->result = DID_NO_CONNECT << 16; 4491 break; 4492 } 4493 if (lpfc_cmd->result == IOERR_INVALID_RPI || 4494 lpfc_cmd->result == IOERR_NO_RESOURCES || 4495 lpfc_cmd->result == IOERR_ABORT_REQUESTED || 4496 lpfc_cmd->result == IOERR_SLER_CMD_RCV_FAILURE) { 4497 cmd->result = DID_TRANSPORT_DISRUPTED << 16; 4498 break; 4499 } 4500 if ((lpfc_cmd->result == IOERR_RX_DMA_FAILED || 4501 lpfc_cmd->result == IOERR_TX_DMA_FAILED) && 4502 pIocbOut->iocb.unsli3.sli3_bg.bgstat) { 4503 if (scsi_get_prot_op(cmd) != SCSI_PROT_NORMAL) { 4504 /* 4505 * This is a response for a BG enabled 4506 * cmd. Parse BG error 4507 */ 4508 lpfc_parse_bg_err(phba, lpfc_cmd, 4509 pIocbOut); 4510 break; 4511 } else { 4512 lpfc_printf_vlog(vport, KERN_WARNING, 4513 LOG_BG, 4514 "9031 non-zero BGSTAT " 4515 "on unprotected cmd\n"); 4516 } 4517 } 4518 if ((lpfc_cmd->status == IOSTAT_REMOTE_STOP) 4519 && (phba->sli_rev == LPFC_SLI_REV4) 4520 && pnode) { 4521 /* This IO was aborted by the target, we don't 4522 * know the rxid and because we did not send the 4523 * ABTS we cannot generate and RRQ. 4524 */ 4525 lpfc_set_rrq_active(phba, pnode, 4526 lpfc_cmd->cur_iocbq.sli4_lxritag, 4527 0, 0); 4528 } 4529 fallthrough; 4530 default: 4531 cmd->result = DID_ERROR << 16; 4532 break; 4533 } 4534 4535 if (!pnode || (pnode->nlp_state != NLP_STE_MAPPED_NODE)) 4536 cmd->result = DID_TRANSPORT_DISRUPTED << 16 | 4537 SAM_STAT_BUSY; 4538 } else 4539 cmd->result = DID_OK << 16; 4540 4541 if (cmd->result || lpfc_cmd->fcp_rsp->rspSnsLen) { 4542 uint32_t *lp = (uint32_t *)cmd->sense_buffer; 4543 4544 lpfc_printf_vlog(vport, KERN_INFO, LOG_FCP, 4545 "0710 Iodone <%d/%llu> cmd x%px, error " 4546 "x%x SNS x%x x%x Data: x%x x%x\n", 4547 cmd->device->id, cmd->device->lun, cmd, 4548 cmd->result, *lp, *(lp + 3), cmd->retries, 4549 scsi_get_resid(cmd)); 4550 } 4551 4552 if (vport->cfg_max_scsicmpl_time && 4553 time_after(jiffies, lpfc_cmd->start_time + 4554 msecs_to_jiffies(vport->cfg_max_scsicmpl_time))) { 4555 spin_lock_irqsave(shost->host_lock, flags); 4556 if (pnode) { 4557 if (pnode->cmd_qdepth > 4558 atomic_read(&pnode->cmd_pending) && 4559 (atomic_read(&pnode->cmd_pending) > 4560 LPFC_MIN_TGT_QDEPTH) && 4561 ((cmd->cmnd[0] == READ_10) || 4562 (cmd->cmnd[0] == WRITE_10))) 4563 pnode->cmd_qdepth = 4564 atomic_read(&pnode->cmd_pending); 4565 4566 pnode->last_change_time = jiffies; 4567 } 4568 spin_unlock_irqrestore(shost->host_lock, flags); 4569 } 4570 lpfc_scsi_unprep_dma_buf(phba, lpfc_cmd); 4571 4572 lpfc_cmd->pCmd = NULL; 4573 spin_unlock(&lpfc_cmd->buf_lock); 4574 4575#ifdef CONFIG_SCSI_LPFC_DEBUG_FS 4576 if (lpfc_cmd->ts_cmd_start) { 4577 lpfc_cmd->ts_isr_cmpl = pIocbIn->isr_timestamp; 4578 lpfc_cmd->ts_data_io = ktime_get_ns(); 4579 phba->ktime_last_cmd = lpfc_cmd->ts_data_io; 4580 lpfc_io_ktime(phba, lpfc_cmd); 4581 } 4582#endif 4583 4584 /* The sdev is not guaranteed to be valid post scsi_done upcall. */ 4585 scsi_done(cmd); 4586 4587 /* 4588 * If there is an abort thread waiting for command completion 4589 * wake up the thread. 4590 */ 4591 spin_lock(&lpfc_cmd->buf_lock); 4592 lpfc_cmd->cur_iocbq.cmd_flag &= ~LPFC_DRIVER_ABORTED; 4593 if (lpfc_cmd->waitq) 4594 wake_up(lpfc_cmd->waitq); 4595 spin_unlock(&lpfc_cmd->buf_lock); 4596 4597 lpfc_release_scsi_buf(phba, lpfc_cmd); 4598} 4599 4600/** 4601 * lpfc_scsi_prep_cmnd_buf_s3 - SLI-3 IOCB init for the IO 4602 * @vport: Pointer to vport object. 4603 * @lpfc_cmd: The scsi buffer which is going to be prep'ed. 4604 * @tmo: timeout value for the IO 4605 * 4606 * Based on the data-direction of the command, initialize IOCB 4607 * in the I/O buffer. Fill in the IOCB fields which are independent 4608 * of the scsi buffer 4609 * 4610 * RETURNS 0 - SUCCESS, 4611 **/ 4612static int lpfc_scsi_prep_cmnd_buf_s3(struct lpfc_vport *vport, 4613 struct lpfc_io_buf *lpfc_cmd, 4614 uint8_t tmo) 4615{ 4616 IOCB_t *iocb_cmd = &lpfc_cmd->cur_iocbq.iocb; 4617 struct lpfc_iocbq *piocbq = &lpfc_cmd->cur_iocbq; 4618 struct scsi_cmnd *scsi_cmnd = lpfc_cmd->pCmd; 4619 struct fcp_cmnd *fcp_cmnd = lpfc_cmd->fcp_cmnd; 4620 struct lpfc_nodelist *pnode = lpfc_cmd->ndlp; 4621 int datadir = scsi_cmnd->sc_data_direction; 4622 u32 fcpdl; 4623 4624 piocbq->iocb.un.fcpi.fcpi_XRdy = 0; 4625 4626 /* 4627 * There are three possibilities here - use scatter-gather segment, use 4628 * the single mapping, or neither. Start the lpfc command prep by 4629 * bumping the bpl beyond the fcp_cmnd and fcp_rsp regions to the first 4630 * data bde entry. 4631 */ 4632 if (scsi_sg_count(scsi_cmnd)) { 4633 if (datadir == DMA_TO_DEVICE) { 4634 iocb_cmd->ulpCommand = CMD_FCP_IWRITE64_CR; 4635 iocb_cmd->ulpPU = PARM_READ_CHECK; 4636 if (vport->cfg_first_burst_size && 4637 test_bit(NLP_FIRSTBURST, &pnode->nlp_flag)) { 4638 u32 xrdy_len; 4639 4640 fcpdl = scsi_bufflen(scsi_cmnd); 4641 xrdy_len = min(fcpdl, 4642 vport->cfg_first_burst_size); 4643 piocbq->iocb.un.fcpi.fcpi_XRdy = xrdy_len; 4644 } 4645 fcp_cmnd->fcpCntl3 = WRITE_DATA; 4646 } else { 4647 iocb_cmd->ulpCommand = CMD_FCP_IREAD64_CR; 4648 iocb_cmd->ulpPU = PARM_READ_CHECK; 4649 fcp_cmnd->fcpCntl3 = READ_DATA; 4650 } 4651 } else { 4652 iocb_cmd->ulpCommand = CMD_FCP_ICMND64_CR; 4653 iocb_cmd->un.fcpi.fcpi_parm = 0; 4654 iocb_cmd->ulpPU = 0; 4655 fcp_cmnd->fcpCntl3 = 0; 4656 } 4657 4658 /* 4659 * Finish initializing those IOCB fields that are independent 4660 * of the scsi_cmnd request_buffer 4661 */ 4662 piocbq->iocb.ulpContext = pnode->nlp_rpi; 4663 if (pnode->nlp_fcp_info & NLP_FCP_2_DEVICE) 4664 piocbq->iocb.ulpFCP2Rcvy = 1; 4665 else 4666 piocbq->iocb.ulpFCP2Rcvy = 0; 4667 4668 piocbq->iocb.ulpClass = (pnode->nlp_fcp_info & 0x0f); 4669 piocbq->io_buf = lpfc_cmd; 4670 if (!piocbq->cmd_cmpl) 4671 piocbq->cmd_cmpl = lpfc_scsi_cmd_iocb_cmpl; 4672 piocbq->iocb.ulpTimeout = tmo; 4673 piocbq->vport = vport; 4674 return 0; 4675} 4676 4677/** 4678 * lpfc_scsi_prep_cmnd_buf_s4 - SLI-4 WQE init for the IO 4679 * @vport: Pointer to vport object. 4680 * @lpfc_cmd: The scsi buffer which is going to be prep'ed. 4681 * @tmo: timeout value for the IO 4682 * 4683 * Based on the data-direction of the command copy WQE template 4684 * to I/O buffer WQE. Fill in the WQE fields which are independent 4685 * of the scsi buffer 4686 * 4687 * RETURNS 0 - SUCCESS, 4688 **/ 4689static int lpfc_scsi_prep_cmnd_buf_s4(struct lpfc_vport *vport, 4690 struct lpfc_io_buf *lpfc_cmd, 4691 uint8_t tmo) 4692{ 4693 struct lpfc_hba *phba = vport->phba; 4694 struct scsi_cmnd *scsi_cmnd = lpfc_cmd->pCmd; 4695 struct fcp_cmnd *fcp_cmnd = lpfc_cmd->fcp_cmnd; 4696 struct lpfc_sli4_hdw_queue *hdwq = NULL; 4697 struct lpfc_iocbq *pwqeq = &lpfc_cmd->cur_iocbq; 4698 struct lpfc_nodelist *pnode = lpfc_cmd->ndlp; 4699 union lpfc_wqe128 *wqe = &pwqeq->wqe; 4700 u16 idx = lpfc_cmd->hdwq_no; 4701 int datadir = scsi_cmnd->sc_data_direction; 4702 4703 hdwq = &phba->sli4_hba.hdwq[idx]; 4704 4705 /* Initialize 64 bytes only */ 4706 memset(wqe, 0, sizeof(union lpfc_wqe128)); 4707 4708 /* 4709 * There are three possibilities here - use scatter-gather segment, use 4710 * the single mapping, or neither. 4711 */ 4712 if (scsi_sg_count(scsi_cmnd)) { 4713 if (datadir == DMA_TO_DEVICE) { 4714 /* From the iwrite template, initialize words 7 - 11 */ 4715 memcpy(&wqe->words[7], 4716 &lpfc_iwrite_cmd_template.words[7], 4717 sizeof(uint32_t) * 5); 4718 4719 fcp_cmnd->fcpCntl3 = WRITE_DATA; 4720 if (hdwq) 4721 hdwq->scsi_cstat.output_requests++; 4722 } else { 4723 /* From the iread template, initialize words 7 - 11 */ 4724 memcpy(&wqe->words[7], 4725 &lpfc_iread_cmd_template.words[7], 4726 sizeof(uint32_t) * 5); 4727 4728 /* Word 7 */ 4729 bf_set(wqe_tmo, &wqe->fcp_iread.wqe_com, tmo); 4730 4731 fcp_cmnd->fcpCntl3 = READ_DATA; 4732 if (hdwq) 4733 hdwq->scsi_cstat.input_requests++; 4734 4735 /* For a CMF Managed port, iod must be zero'ed */ 4736 if (phba->cmf_active_mode == LPFC_CFG_MANAGED) 4737 bf_set(wqe_iod, &wqe->fcp_iread.wqe_com, 4738 LPFC_WQE_IOD_NONE); 4739 } 4740 4741 /* Additional fcp cdb length field calculation. 4742 * LPFC_FCP_CDB_LEN_32 - normal 16 byte cdb length, 4743 * then divide by 4 for the word count. 4744 * shift 2 because of the RDDATA/WRDATA. 4745 */ 4746 if (scsi_cmnd->cmd_len > LPFC_FCP_CDB_LEN) 4747 fcp_cmnd->fcpCntl3 |= 4 << 2; 4748 } else { 4749 /* From the icmnd template, initialize words 4 - 11 */ 4750 memcpy(&wqe->words[4], &lpfc_icmnd_cmd_template.words[4], 4751 sizeof(uint32_t) * 8); 4752 4753 /* Word 7 */ 4754 bf_set(wqe_tmo, &wqe->fcp_icmd.wqe_com, tmo); 4755 4756 fcp_cmnd->fcpCntl3 = 0; 4757 if (hdwq) 4758 hdwq->scsi_cstat.control_requests++; 4759 } 4760 4761 /* 4762 * Finish initializing those WQE fields that are independent 4763 * of the request_buffer 4764 */ 4765 4766 /* Word 3 */ 4767 bf_set(payload_offset_len, &wqe->fcp_icmd, 4768 sizeof(struct fcp_cmnd) + sizeof(struct fcp_rsp)); 4769 4770 /* Word 6 */ 4771 bf_set(wqe_ctxt_tag, &wqe->generic.wqe_com, 4772 phba->sli4_hba.rpi_ids[pnode->nlp_rpi]); 4773 bf_set(wqe_xri_tag, &wqe->generic.wqe_com, pwqeq->sli4_xritag); 4774 4775 /* Word 7*/ 4776 if (pnode->nlp_fcp_info & NLP_FCP_2_DEVICE) 4777 bf_set(wqe_erp, &wqe->generic.wqe_com, 1); 4778 4779 bf_set(wqe_class, &wqe->generic.wqe_com, 4780 (pnode->nlp_fcp_info & 0x0f)); 4781 4782 /* Word 8 */ 4783 wqe->generic.wqe_com.abort_tag = pwqeq->iotag; 4784 4785 /* Word 9 */ 4786 bf_set(wqe_reqtag, &wqe->generic.wqe_com, pwqeq->iotag); 4787 4788 pwqeq->vport = vport; 4789 pwqeq->io_buf = lpfc_cmd; 4790 pwqeq->hba_wqidx = lpfc_cmd->hdwq_no; 4791 pwqeq->cmd_cmpl = lpfc_fcp_io_cmd_wqe_cmpl; 4792 4793 return 0; 4794} 4795 4796/** 4797 * lpfc_scsi_prep_cmnd - Wrapper func for convert scsi cmnd to FCP info unit 4798 * @vport: The virtual port for which this call is being executed. 4799 * @lpfc_cmd: The scsi command which needs to send. 4800 * @pnode: Pointer to lpfc_nodelist. 4801 * 4802 * This routine initializes fcp_cmnd and iocb data structure from scsi command 4803 * to transfer for device with SLI3 interface spec. 4804 **/ 4805static int 4806lpfc_scsi_prep_cmnd(struct lpfc_vport *vport, struct lpfc_io_buf *lpfc_cmd, 4807 struct lpfc_nodelist *pnode) 4808{ 4809 struct scsi_cmnd *scsi_cmnd = lpfc_cmd->pCmd; 4810 struct fcp_cmnd *fcp_cmnd = lpfc_cmd->fcp_cmnd; 4811 u8 *ptr; 4812 4813 if (!pnode) 4814 return 0; 4815 4816 lpfc_cmd->fcp_rsp->rspSnsLen = 0; 4817 /* clear task management bits */ 4818 lpfc_cmd->fcp_cmnd->fcpCntl2 = 0; 4819 4820 int_to_scsilun(lpfc_cmd->pCmd->device->lun, 4821 &lpfc_cmd->fcp_cmnd->fcp_lun); 4822 4823 ptr = &((struct fcp_cmnd32 *)fcp_cmnd)->fcpCdb[0]; 4824 memcpy(ptr, scsi_cmnd->cmnd, scsi_cmnd->cmd_len); 4825 if (scsi_cmnd->cmd_len < LPFC_FCP_CDB_LEN) { 4826 ptr += scsi_cmnd->cmd_len; 4827 memset(ptr, 0, (LPFC_FCP_CDB_LEN - scsi_cmnd->cmd_len)); 4828 } 4829 4830 fcp_cmnd->fcpCntl1 = SIMPLE_Q; 4831 4832 lpfc_scsi_prep_cmnd_buf(vport, lpfc_cmd, lpfc_cmd->timeout); 4833 4834 return 0; 4835} 4836 4837/** 4838 * lpfc_scsi_prep_task_mgmt_cmd_s3 - Convert SLI3 scsi TM cmd to FCP info unit 4839 * @vport: The virtual port for which this call is being executed. 4840 * @lpfc_cmd: Pointer to lpfc_io_buf data structure. 4841 * @lun: Logical unit number. 4842 * @task_mgmt_cmd: SCSI task management command. 4843 * 4844 * This routine creates FCP information unit corresponding to @task_mgmt_cmd 4845 * for device with SLI-3 interface spec. 4846 * 4847 * Return codes: 4848 * 0 - Error 4849 * 1 - Success 4850 **/ 4851static int 4852lpfc_scsi_prep_task_mgmt_cmd_s3(struct lpfc_vport *vport, 4853 struct lpfc_io_buf *lpfc_cmd, 4854 u64 lun, u8 task_mgmt_cmd) 4855{ 4856 struct lpfc_iocbq *piocbq; 4857 IOCB_t *piocb; 4858 struct fcp_cmnd *fcp_cmnd; 4859 struct lpfc_rport_data *rdata = lpfc_cmd->rdata; 4860 struct lpfc_nodelist *ndlp = rdata->pnode; 4861 4862 if (!ndlp || ndlp->nlp_state != NLP_STE_MAPPED_NODE) 4863 return 0; 4864 4865 piocbq = &(lpfc_cmd->cur_iocbq); 4866 piocbq->vport = vport; 4867 4868 piocb = &piocbq->iocb; 4869 4870 fcp_cmnd = lpfc_cmd->fcp_cmnd; 4871 /* Clear out any old data in the FCP command area */ 4872 memset(fcp_cmnd, 0, sizeof(struct fcp_cmnd)); 4873 int_to_scsilun(lun, &fcp_cmnd->fcp_lun); 4874 fcp_cmnd->fcpCntl2 = task_mgmt_cmd; 4875 if (!(vport->phba->sli3_options & LPFC_SLI3_BG_ENABLED)) 4876 lpfc_fcpcmd_to_iocb(piocb->unsli3.fcp_ext.icd, fcp_cmnd); 4877 piocb->ulpCommand = CMD_FCP_ICMND64_CR; 4878 piocb->ulpContext = ndlp->nlp_rpi; 4879 piocb->ulpFCP2Rcvy = (ndlp->nlp_fcp_info & NLP_FCP_2_DEVICE) ? 1 : 0; 4880 piocb->ulpClass = (ndlp->nlp_fcp_info & 0x0f); 4881 piocb->ulpPU = 0; 4882 piocb->un.fcpi.fcpi_parm = 0; 4883 4884 /* ulpTimeout is only one byte */ 4885 if (lpfc_cmd->timeout > 0xff) { 4886 /* 4887 * Do not timeout the command at the firmware level. 4888 * The driver will provide the timeout mechanism. 4889 */ 4890 piocb->ulpTimeout = 0; 4891 } else 4892 piocb->ulpTimeout = lpfc_cmd->timeout; 4893 4894 return 1; 4895} 4896 4897/** 4898 * lpfc_scsi_prep_task_mgmt_cmd_s4 - Convert SLI4 scsi TM cmd to FCP info unit 4899 * @vport: The virtual port for which this call is being executed. 4900 * @lpfc_cmd: Pointer to lpfc_io_buf data structure. 4901 * @lun: Logical unit number. 4902 * @task_mgmt_cmd: SCSI task management command. 4903 * 4904 * This routine creates FCP information unit corresponding to @task_mgmt_cmd 4905 * for device with SLI-4 interface spec. 4906 * 4907 * Return codes: 4908 * 0 - Error 4909 * 1 - Success 4910 **/ 4911static int 4912lpfc_scsi_prep_task_mgmt_cmd_s4(struct lpfc_vport *vport, 4913 struct lpfc_io_buf *lpfc_cmd, 4914 u64 lun, u8 task_mgmt_cmd) 4915{ 4916 struct lpfc_iocbq *pwqeq = &lpfc_cmd->cur_iocbq; 4917 union lpfc_wqe128 *wqe = &pwqeq->wqe; 4918 struct fcp_cmnd *fcp_cmnd; 4919 struct lpfc_rport_data *rdata = lpfc_cmd->rdata; 4920 struct lpfc_nodelist *ndlp = rdata->pnode; 4921 4922 if (!ndlp || ndlp->nlp_state != NLP_STE_MAPPED_NODE) 4923 return 0; 4924 4925 pwqeq->vport = vport; 4926 /* Initialize 64 bytes only */ 4927 memset(wqe, 0, sizeof(union lpfc_wqe128)); 4928 4929 /* From the icmnd template, initialize words 4 - 11 */ 4930 memcpy(&wqe->words[4], &lpfc_icmnd_cmd_template.words[4], 4931 sizeof(uint32_t) * 8); 4932 4933 fcp_cmnd = lpfc_cmd->fcp_cmnd; 4934 /* Clear out any old data in the FCP command area */ 4935 memset(fcp_cmnd, 0, sizeof(struct fcp_cmnd)); 4936 int_to_scsilun(lun, &fcp_cmnd->fcp_lun); 4937 fcp_cmnd->fcpCntl3 = 0; 4938 fcp_cmnd->fcpCntl2 = task_mgmt_cmd; 4939 4940 bf_set(payload_offset_len, &wqe->fcp_icmd, 4941 sizeof(struct fcp_cmnd) + sizeof(struct fcp_rsp)); 4942 bf_set(cmd_buff_len, &wqe->fcp_icmd, 0); 4943 bf_set(wqe_ctxt_tag, &wqe->generic.wqe_com, /* ulpContext */ 4944 vport->phba->sli4_hba.rpi_ids[ndlp->nlp_rpi]); 4945 bf_set(wqe_erp, &wqe->fcp_icmd.wqe_com, 4946 ((ndlp->nlp_fcp_info & NLP_FCP_2_DEVICE) ? 1 : 0)); 4947 bf_set(wqe_class, &wqe->fcp_icmd.wqe_com, 4948 (ndlp->nlp_fcp_info & 0x0f)); 4949 4950 /* ulpTimeout is only one byte */ 4951 if (lpfc_cmd->timeout > 0xff) { 4952 /* 4953 * Do not timeout the command at the firmware level. 4954 * The driver will provide the timeout mechanism. 4955 */ 4956 bf_set(wqe_tmo, &wqe->fcp_icmd.wqe_com, 0); 4957 } else { 4958 bf_set(wqe_tmo, &wqe->fcp_icmd.wqe_com, lpfc_cmd->timeout); 4959 } 4960 4961 lpfc_prep_embed_io(vport->phba, lpfc_cmd); 4962 bf_set(wqe_xri_tag, &wqe->generic.wqe_com, pwqeq->sli4_xritag); 4963 wqe->generic.wqe_com.abort_tag = pwqeq->iotag; 4964 bf_set(wqe_reqtag, &wqe->generic.wqe_com, pwqeq->iotag); 4965 4966 lpfc_sli4_set_rsp_sgl_last(vport->phba, lpfc_cmd); 4967 4968 return 1; 4969} 4970 4971/** 4972 * lpfc_scsi_api_table_setup - Set up scsi api function jump table 4973 * @phba: The hba struct for which this call is being executed. 4974 * @dev_grp: The HBA PCI-Device group number. 4975 * 4976 * This routine sets up the SCSI interface API function jump table in @phba 4977 * struct. 4978 * Returns: 0 - success, -ENODEV - failure. 4979 **/ 4980int 4981lpfc_scsi_api_table_setup(struct lpfc_hba *phba, uint8_t dev_grp) 4982{ 4983 4984 phba->lpfc_scsi_unprep_dma_buf = lpfc_scsi_unprep_dma_buf; 4985 4986 switch (dev_grp) { 4987 case LPFC_PCI_DEV_LP: 4988 phba->lpfc_scsi_prep_dma_buf = lpfc_scsi_prep_dma_buf_s3; 4989 phba->lpfc_bg_scsi_prep_dma_buf = lpfc_bg_scsi_prep_dma_buf_s3; 4990 phba->lpfc_release_scsi_buf = lpfc_release_scsi_buf_s3; 4991 phba->lpfc_get_scsi_buf = lpfc_get_scsi_buf_s3; 4992 phba->lpfc_scsi_prep_cmnd_buf = lpfc_scsi_prep_cmnd_buf_s3; 4993 phba->lpfc_scsi_prep_task_mgmt_cmd = 4994 lpfc_scsi_prep_task_mgmt_cmd_s3; 4995 break; 4996 case LPFC_PCI_DEV_OC: 4997 phba->lpfc_scsi_prep_dma_buf = lpfc_scsi_prep_dma_buf_s4; 4998 phba->lpfc_bg_scsi_prep_dma_buf = lpfc_bg_scsi_prep_dma_buf_s4; 4999 phba->lpfc_release_scsi_buf = lpfc_release_scsi_buf_s4; 5000 phba->lpfc_get_scsi_buf = lpfc_get_scsi_buf_s4; 5001 phba->lpfc_scsi_prep_cmnd_buf = lpfc_scsi_prep_cmnd_buf_s4; 5002 phba->lpfc_scsi_prep_task_mgmt_cmd = 5003 lpfc_scsi_prep_task_mgmt_cmd_s4; 5004 break; 5005 default: 5006 lpfc_printf_log(phba, KERN_ERR, LOG_INIT, 5007 "1418 Invalid HBA PCI-device group: 0x%x\n", 5008 dev_grp); 5009 return -ENODEV; 5010 } 5011 phba->lpfc_rampdown_queue_depth = lpfc_rampdown_queue_depth; 5012 return 0; 5013} 5014 5015/** 5016 * lpfc_tskmgmt_def_cmpl - IOCB completion routine for task management command 5017 * @phba: The Hba for which this call is being executed. 5018 * @cmdiocbq: Pointer to lpfc_iocbq data structure. 5019 * @rspiocbq: Pointer to lpfc_iocbq data structure. 5020 * 5021 * This routine is IOCB completion routine for device reset and target reset 5022 * routine. This routine release scsi buffer associated with lpfc_cmd. 5023 **/ 5024static void 5025lpfc_tskmgmt_def_cmpl(struct lpfc_hba *phba, 5026 struct lpfc_iocbq *cmdiocbq, 5027 struct lpfc_iocbq *rspiocbq) 5028{ 5029 struct lpfc_io_buf *lpfc_cmd = cmdiocbq->io_buf; 5030 if (lpfc_cmd) 5031 lpfc_release_scsi_buf(phba, lpfc_cmd); 5032 return; 5033} 5034 5035/** 5036 * lpfc_check_pci_resettable - Walks list of devices on pci_dev's bus to check 5037 * if issuing a pci_bus_reset is possibly unsafe 5038 * @phba: lpfc_hba pointer. 5039 * 5040 * Description: 5041 * Walks the bus_list to ensure only PCI devices with Emulex 5042 * vendor id, device ids that support hot reset, and only one occurrence 5043 * of function 0. 5044 * 5045 * Returns: 5046 * -EBADSLT, detected invalid device 5047 * 0, successful 5048 */ 5049int 5050lpfc_check_pci_resettable(struct lpfc_hba *phba) 5051{ 5052 const struct pci_dev *pdev = phba->pcidev; 5053 struct pci_dev *ptr = NULL; 5054 u8 counter = 0; 5055 5056 /* Walk the list of devices on the pci_dev's bus */ 5057 list_for_each_entry(ptr, &pdev->bus->devices, bus_list) { 5058 /* Check for Emulex Vendor ID */ 5059 if (ptr->vendor != PCI_VENDOR_ID_EMULEX) { 5060 lpfc_printf_log(phba, KERN_INFO, LOG_INIT, 5061 "8346 Non-Emulex vendor found: " 5062 "0x%04x\n", ptr->vendor); 5063 return -EBADSLT; 5064 } 5065 5066 /* Check for valid Emulex Device ID */ 5067 if (phba->sli_rev != LPFC_SLI_REV4 || 5068 test_bit(HBA_FCOE_MODE, &phba->hba_flag)) { 5069 lpfc_printf_log(phba, KERN_INFO, LOG_INIT, 5070 "8347 Incapable PCI reset device: " 5071 "0x%04x\n", ptr->device); 5072 return -EBADSLT; 5073 } 5074 5075 /* Check for only one function 0 ID to ensure only one HBA on 5076 * secondary bus 5077 */ 5078 if (ptr->devfn == 0) { 5079 if (++counter > 1) { 5080 lpfc_printf_log(phba, KERN_INFO, LOG_INIT, 5081 "8348 More than one device on " 5082 "secondary bus found\n"); 5083 return -EBADSLT; 5084 } 5085 } 5086 } 5087 5088 return 0; 5089} 5090 5091/** 5092 * lpfc_info - Info entry point of scsi_host_template data structure 5093 * @host: The scsi host for which this call is being executed. 5094 * 5095 * This routine provides module information about hba. 5096 * 5097 * Reutrn code: 5098 * Pointer to char - Success. 5099 **/ 5100const char * 5101lpfc_info(struct Scsi_Host *host) 5102{ 5103 struct lpfc_vport *vport = (struct lpfc_vport *) host->hostdata; 5104 struct lpfc_hba *phba = vport->phba; 5105 int link_speed = 0; 5106 static char lpfcinfobuf[384]; 5107 char tmp[384] = {0}; 5108 5109 memset(lpfcinfobuf, 0, sizeof(lpfcinfobuf)); 5110 if (phba && phba->pcidev){ 5111 /* Model Description */ 5112 scnprintf(tmp, sizeof(tmp), phba->ModelDesc); 5113 if (strlcat(lpfcinfobuf, tmp, sizeof(lpfcinfobuf)) >= 5114 sizeof(lpfcinfobuf)) 5115 goto buffer_done; 5116 5117 /* PCI Info */ 5118 scnprintf(tmp, sizeof(tmp), 5119 " on PCI bus %02x device %02x irq %d", 5120 phba->pcidev->bus->number, phba->pcidev->devfn, 5121 phba->pcidev->irq); 5122 if (strlcat(lpfcinfobuf, tmp, sizeof(lpfcinfobuf)) >= 5123 sizeof(lpfcinfobuf)) 5124 goto buffer_done; 5125 5126 /* Port Number */ 5127 if (phba->Port[0]) { 5128 scnprintf(tmp, sizeof(tmp), " port %s", phba->Port); 5129 if (strlcat(lpfcinfobuf, tmp, sizeof(lpfcinfobuf)) >= 5130 sizeof(lpfcinfobuf)) 5131 goto buffer_done; 5132 } 5133 5134 /* Link Speed */ 5135 link_speed = lpfc_sli_port_speed_get(phba); 5136 if (link_speed != 0) { 5137 scnprintf(tmp, sizeof(tmp), 5138 " Logical Link Speed: %d Mbps", link_speed); 5139 if (strlcat(lpfcinfobuf, tmp, sizeof(lpfcinfobuf)) >= 5140 sizeof(lpfcinfobuf)) 5141 goto buffer_done; 5142 } 5143 5144 /* Support for BSG ioctls */ 5145 scnprintf(tmp, sizeof(tmp), " BSG"); 5146 if (strlcat(lpfcinfobuf, tmp, sizeof(lpfcinfobuf)) >= 5147 sizeof(lpfcinfobuf)) 5148 goto buffer_done; 5149 5150 /* PCI resettable */ 5151 if (!lpfc_check_pci_resettable(phba)) { 5152 scnprintf(tmp, sizeof(tmp), " PCI resettable"); 5153 strlcat(lpfcinfobuf, tmp, sizeof(lpfcinfobuf)); 5154 } 5155 } 5156 5157buffer_done: 5158 return lpfcinfobuf; 5159} 5160 5161/** 5162 * lpfc_poll_rearm_timer - Routine to modify fcp_poll timer of hba 5163 * @phba: The Hba for which this call is being executed. 5164 * 5165 * This routine modifies fcp_poll_timer field of @phba by cfg_poll_tmo. 5166 * The default value of cfg_poll_tmo is 10 milliseconds. 5167 **/ 5168static __inline__ void lpfc_poll_rearm_timer(struct lpfc_hba * phba) 5169{ 5170 unsigned long poll_tmo_expires = 5171 (jiffies + msecs_to_jiffies(phba->cfg_poll_tmo)); 5172 5173 if (!list_empty(&phba->sli.sli3_ring[LPFC_FCP_RING].txcmplq)) 5174 mod_timer(&phba->fcp_poll_timer, 5175 poll_tmo_expires); 5176} 5177 5178/** 5179 * lpfc_poll_start_timer - Routine to start fcp_poll_timer of HBA 5180 * @phba: The Hba for which this call is being executed. 5181 * 5182 * This routine starts the fcp_poll_timer of @phba. 5183 **/ 5184void lpfc_poll_start_timer(struct lpfc_hba * phba) 5185{ 5186 lpfc_poll_rearm_timer(phba); 5187} 5188 5189/** 5190 * lpfc_poll_timeout - Restart polling timer 5191 * @t: Timer construct where lpfc_hba data structure pointer is obtained. 5192 * 5193 * This routine restarts fcp_poll timer, when FCP ring polling is enable 5194 * and FCP Ring interrupt is disable. 5195 **/ 5196void lpfc_poll_timeout(struct timer_list *t) 5197{ 5198 struct lpfc_hba *phba = timer_container_of(phba, t, fcp_poll_timer); 5199 5200 if (phba->cfg_poll & ENABLE_FCP_RING_POLLING) { 5201 lpfc_sli_handle_fast_ring_event(phba, 5202 &phba->sli.sli3_ring[LPFC_FCP_RING], HA_R0RE_REQ); 5203 5204 if (phba->cfg_poll & DISABLE_FCP_RING_INT) 5205 lpfc_poll_rearm_timer(phba); 5206 } 5207} 5208 5209/* 5210 * lpfc_is_command_vm_io - get the UUID from blk cgroup 5211 * @cmd: Pointer to scsi_cmnd data structure 5212 * Returns UUID if present, otherwise NULL 5213 */ 5214static char *lpfc_is_command_vm_io(struct scsi_cmnd *cmd) 5215{ 5216 struct bio *bio = scsi_cmd_to_rq(cmd)->bio; 5217 5218 if (!IS_ENABLED(CONFIG_BLK_CGROUP_FC_APPID) || !bio) 5219 return NULL; 5220 return blkcg_get_fc_appid(bio); 5221} 5222 5223/** 5224 * lpfc_queuecommand - scsi_host_template queuecommand entry point 5225 * @shost: kernel scsi host pointer. 5226 * @cmnd: Pointer to scsi_cmnd data structure. 5227 * 5228 * Driver registers this routine to scsi midlayer to submit a @cmd to process. 5229 * This routine prepares an IOCB from scsi command and provides to firmware. 5230 * The @done callback is invoked after driver finished processing the command. 5231 * 5232 * Return value : 5233 * 0 - Success 5234 * SCSI_MLQUEUE_HOST_BUSY - Block all devices served by this host temporarily. 5235 **/ 5236static int 5237lpfc_queuecommand(struct Scsi_Host *shost, struct scsi_cmnd *cmnd) 5238{ 5239 struct lpfc_vport *vport = (struct lpfc_vport *) shost->hostdata; 5240 struct lpfc_hba *phba = vport->phba; 5241 struct lpfc_iocbq *cur_iocbq = NULL; 5242 struct lpfc_rport_data *rdata; 5243 struct lpfc_nodelist *ndlp; 5244 struct lpfc_io_buf *lpfc_cmd; 5245 struct fc_rport *rport = starget_to_rport(scsi_target(cmnd->device)); 5246 int err, idx; 5247 u8 *uuid = NULL; 5248 uint64_t start; 5249 5250 start = ktime_get_ns(); 5251 rdata = lpfc_rport_data_from_scsi_device(cmnd->device); 5252 5253 /* sanity check on references */ 5254 if (unlikely(!rdata) || unlikely(!rport)) 5255 goto out_fail_command; 5256 5257 err = fc_remote_port_chkready(rport); 5258 if (err) { 5259 cmnd->result = err; 5260 goto out_fail_command; 5261 } 5262 ndlp = rdata->pnode; 5263 5264 if ((scsi_get_prot_op(cmnd) != SCSI_PROT_NORMAL) && 5265 (!(phba->sli3_options & LPFC_SLI3_BG_ENABLED))) { 5266 5267 lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT, 5268 "9058 BLKGRD: ERROR: rcvd protected cmd:%02x" 5269 " op:%02x str=%s without registering for" 5270 " BlockGuard - Rejecting command\n", 5271 cmnd->cmnd[0], scsi_get_prot_op(cmnd), 5272 dif_op_str[scsi_get_prot_op(cmnd)]); 5273 goto out_fail_command; 5274 } 5275 5276 /* 5277 * Catch race where our node has transitioned, but the 5278 * transport is still transitioning. 5279 */ 5280 if (!ndlp) 5281 goto out_tgt_busy1; 5282 5283 /* Check if IO qualifies for CMF */ 5284 if (phba->cmf_active_mode != LPFC_CFG_OFF && 5285 cmnd->sc_data_direction == DMA_FROM_DEVICE && 5286 (scsi_sg_count(cmnd))) { 5287 /* Latency start time saved in rx_cmd_start later in routine */ 5288 err = lpfc_update_cmf_cmd(phba, scsi_bufflen(cmnd)); 5289 if (err) 5290 goto out_tgt_busy1; 5291 } 5292 5293 if (lpfc_ndlp_check_qdepth(phba, ndlp)) { 5294 if (atomic_read(&ndlp->cmd_pending) >= ndlp->cmd_qdepth) { 5295 lpfc_printf_vlog(vport, KERN_INFO, LOG_FCP_ERROR, 5296 "3377 Target Queue Full, scsi Id:%d " 5297 "Qdepth:%d Pending command:%d" 5298 " WWNN:%02x:%02x:%02x:%02x:" 5299 "%02x:%02x:%02x:%02x, " 5300 " WWPN:%02x:%02x:%02x:%02x:" 5301 "%02x:%02x:%02x:%02x", 5302 ndlp->nlp_sid, ndlp->cmd_qdepth, 5303 atomic_read(&ndlp->cmd_pending), 5304 ndlp->nlp_nodename.u.wwn[0], 5305 ndlp->nlp_nodename.u.wwn[1], 5306 ndlp->nlp_nodename.u.wwn[2], 5307 ndlp->nlp_nodename.u.wwn[3], 5308 ndlp->nlp_nodename.u.wwn[4], 5309 ndlp->nlp_nodename.u.wwn[5], 5310 ndlp->nlp_nodename.u.wwn[6], 5311 ndlp->nlp_nodename.u.wwn[7], 5312 ndlp->nlp_portname.u.wwn[0], 5313 ndlp->nlp_portname.u.wwn[1], 5314 ndlp->nlp_portname.u.wwn[2], 5315 ndlp->nlp_portname.u.wwn[3], 5316 ndlp->nlp_portname.u.wwn[4], 5317 ndlp->nlp_portname.u.wwn[5], 5318 ndlp->nlp_portname.u.wwn[6], 5319 ndlp->nlp_portname.u.wwn[7]); 5320 goto out_tgt_busy2; 5321 } 5322 } 5323 5324 lpfc_cmd = lpfc_get_scsi_buf(phba, ndlp, cmnd); 5325 if (lpfc_cmd == NULL) { 5326 lpfc_rampdown_queue_depth(phba); 5327 5328 lpfc_printf_vlog(vport, KERN_INFO, LOG_FCP_ERROR, 5329 "0707 driver's buffer pool is empty, " 5330 "IO busied\n"); 5331 goto out_host_busy; 5332 } 5333 lpfc_cmd->rx_cmd_start = start; 5334 5335 cur_iocbq = &lpfc_cmd->cur_iocbq; 5336 /* 5337 * Store the midlayer's command structure for the completion phase 5338 * and complete the command initialization. 5339 */ 5340 lpfc_cmd->pCmd = cmnd; 5341 lpfc_cmd->rdata = rdata; 5342 lpfc_cmd->ndlp = ndlp; 5343 cur_iocbq->cmd_cmpl = NULL; 5344 cmnd->host_scribble = (unsigned char *)lpfc_cmd; 5345 5346 err = lpfc_scsi_prep_cmnd(vport, lpfc_cmd, ndlp); 5347 if (err) 5348 goto out_host_busy_release_buf; 5349 5350 if (scsi_get_prot_op(cmnd) != SCSI_PROT_NORMAL) { 5351 if (vport->phba->cfg_enable_bg) { 5352 lpfc_printf_vlog(vport, 5353 KERN_INFO, LOG_SCSI_CMD, 5354 "9033 BLKGRD: rcvd %s cmd:x%x " 5355 "reftag x%x cnt %u pt %x\n", 5356 dif_op_str[scsi_get_prot_op(cmnd)], 5357 cmnd->cmnd[0], 5358 scsi_prot_ref_tag(cmnd), 5359 scsi_logical_block_count(cmnd), 5360 scsi_get_prot_type(cmnd)); 5361 } 5362 err = lpfc_bg_scsi_prep_dma_buf(phba, lpfc_cmd); 5363 } else { 5364 err = lpfc_scsi_prep_dma_buf(phba, lpfc_cmd); 5365 } 5366 5367 if (unlikely(err)) { 5368 if (err == 2) { 5369 cmnd->result = DID_ERROR << 16; 5370 goto out_fail_command_release_buf; 5371 } 5372 goto out_host_busy_free_buf; 5373 } 5374 5375 /* check the necessary and sufficient condition to support VMID */ 5376 if (lpfc_is_vmid_enabled(phba) && 5377 (ndlp->vmid_support || 5378 phba->pport->vmid_priority_tagging == 5379 LPFC_VMID_PRIO_TAG_ALL_TARGETS)) { 5380 /* is the I/O generated by a VM, get the associated virtual */ 5381 /* entity id */ 5382 uuid = lpfc_is_command_vm_io(cmnd); 5383 5384 if (uuid) { 5385 err = lpfc_vmid_get_appid(vport, uuid, 5386 cmnd->sc_data_direction, 5387 (union lpfc_vmid_io_tag *) 5388 &cur_iocbq->vmid_tag); 5389 if (!err) 5390 cur_iocbq->cmd_flag |= LPFC_IO_VMID; 5391 } 5392 } 5393 5394#ifdef CONFIG_SCSI_LPFC_DEBUG_FS 5395 if (unlikely(phba->hdwqstat_on & LPFC_CHECK_SCSI_IO)) 5396 this_cpu_inc(phba->sli4_hba.c_stat->xmt_io); 5397#endif 5398 /* Issue I/O to adapter */ 5399 err = lpfc_sli_issue_fcp_io(phba, LPFC_FCP_RING, cur_iocbq, 5400 SLI_IOCB_RET_IOCB); 5401#ifdef CONFIG_SCSI_LPFC_DEBUG_FS 5402 if (start) { 5403 lpfc_cmd->ts_cmd_start = start; 5404 lpfc_cmd->ts_last_cmd = phba->ktime_last_cmd; 5405 lpfc_cmd->ts_cmd_wqput = ktime_get_ns(); 5406 } else { 5407 lpfc_cmd->ts_cmd_start = 0; 5408 } 5409#endif 5410 if (err) { 5411 lpfc_printf_vlog(vport, KERN_INFO, LOG_FCP, 5412 "3376 FCP could not issue iocb err %x " 5413 "FCP cmd x%x <%d/%llu> " 5414 "sid: x%x did: x%x oxid: x%x " 5415 "Data: x%x x%x x%x x%x\n", 5416 err, cmnd->cmnd[0], 5417 cmnd->device ? cmnd->device->id : 0xffff, 5418 cmnd->device ? cmnd->device->lun : (u64)-1, 5419 vport->fc_myDID, ndlp->nlp_DID, 5420 phba->sli_rev == LPFC_SLI_REV4 ? 5421 cur_iocbq->sli4_xritag : 0xffff, 5422 phba->sli_rev == LPFC_SLI_REV4 ? 5423 phba->sli4_hba.rpi_ids[ndlp->nlp_rpi] : 5424 cur_iocbq->iocb.ulpContext, 5425 cur_iocbq->iotag, 5426 phba->sli_rev == LPFC_SLI_REV4 ? 5427 bf_get(wqe_tmo, 5428 &cur_iocbq->wqe.generic.wqe_com) : 5429 cur_iocbq->iocb.ulpTimeout, 5430 (uint32_t)(scsi_cmd_to_rq(cmnd)->timeout / 1000)); 5431 5432 goto out_host_busy_free_buf; 5433 } 5434 5435 if (phba->cfg_poll & ENABLE_FCP_RING_POLLING) { 5436 lpfc_sli_handle_fast_ring_event(phba, 5437 &phba->sli.sli3_ring[LPFC_FCP_RING], HA_R0RE_REQ); 5438 5439 if (phba->cfg_poll & DISABLE_FCP_RING_INT) 5440 lpfc_poll_rearm_timer(phba); 5441 } 5442 5443 if (phba->cfg_xri_rebalancing) 5444 lpfc_keep_pvt_pool_above_lowwm(phba, lpfc_cmd->hdwq_no); 5445 5446 return 0; 5447 5448 out_host_busy_free_buf: 5449 idx = lpfc_cmd->hdwq_no; 5450 lpfc_scsi_unprep_dma_buf(phba, lpfc_cmd); 5451 if (phba->sli4_hba.hdwq) { 5452 switch (lpfc_cmd->fcp_cmnd->fcpCntl3) { 5453 case WRITE_DATA: 5454 phba->sli4_hba.hdwq[idx].scsi_cstat.output_requests--; 5455 break; 5456 case READ_DATA: 5457 phba->sli4_hba.hdwq[idx].scsi_cstat.input_requests--; 5458 break; 5459 default: 5460 phba->sli4_hba.hdwq[idx].scsi_cstat.control_requests--; 5461 } 5462 } 5463 out_host_busy_release_buf: 5464 lpfc_release_scsi_buf(phba, lpfc_cmd); 5465 out_host_busy: 5466 lpfc_update_cmf_cmpl(phba, LPFC_CGN_NOT_SENT, scsi_bufflen(cmnd), 5467 shost); 5468 return SCSI_MLQUEUE_HOST_BUSY; 5469 5470 out_tgt_busy2: 5471 lpfc_update_cmf_cmpl(phba, LPFC_CGN_NOT_SENT, scsi_bufflen(cmnd), 5472 shost); 5473 out_tgt_busy1: 5474 return SCSI_MLQUEUE_TARGET_BUSY; 5475 5476 out_fail_command_release_buf: 5477 lpfc_release_scsi_buf(phba, lpfc_cmd); 5478 lpfc_update_cmf_cmpl(phba, LPFC_CGN_NOT_SENT, scsi_bufflen(cmnd), 5479 shost); 5480 5481 out_fail_command: 5482 scsi_done(cmnd); 5483 return 0; 5484} 5485 5486/* 5487 * lpfc_vmid_vport_cleanup - cleans up the resources associated with a vport 5488 * @vport: The virtual port for which this call is being executed. 5489 */ 5490void lpfc_vmid_vport_cleanup(struct lpfc_vport *vport) 5491{ 5492 u32 bucket; 5493 struct lpfc_vmid *cur; 5494 5495 if (vport->port_type == LPFC_PHYSICAL_PORT) 5496 timer_delete_sync(&vport->phba->inactive_vmid_poll); 5497 5498 kfree(vport->qfpa_res); 5499 kfree(vport->vmid_priority.vmid_range); 5500 kfree(vport->vmid); 5501 5502 if (!hash_empty(vport->hash_table)) 5503 hash_for_each(vport->hash_table, bucket, cur, hnode) 5504 hash_del(&cur->hnode); 5505 5506 vport->qfpa_res = NULL; 5507 vport->vmid_priority.vmid_range = NULL; 5508 vport->vmid = NULL; 5509 vport->cur_vmid_cnt = 0; 5510} 5511 5512/** 5513 * lpfc_abort_handler - scsi_host_template eh_abort_handler entry point 5514 * @cmnd: Pointer to scsi_cmnd data structure. 5515 * 5516 * This routine aborts @cmnd pending in base driver. 5517 * 5518 * Return code : 5519 * 0x2003 - Error 5520 * 0x2002 - Success 5521 **/ 5522static int 5523lpfc_abort_handler(struct scsi_cmnd *cmnd) 5524{ 5525 struct Scsi_Host *shost = cmnd->device->host; 5526 struct fc_rport *rport = starget_to_rport(scsi_target(cmnd->device)); 5527 struct lpfc_vport *vport = (struct lpfc_vport *) shost->hostdata; 5528 struct lpfc_hba *phba = vport->phba; 5529 struct lpfc_iocbq *iocb; 5530 struct lpfc_io_buf *lpfc_cmd; 5531 int ret = SUCCESS, status = 0; 5532 struct lpfc_sli_ring *pring_s4 = NULL; 5533 struct lpfc_sli_ring *pring = NULL; 5534 int ret_val; 5535 unsigned long flags; 5536 DECLARE_WAIT_QUEUE_HEAD_ONSTACK(waitq); 5537 5538 status = fc_block_rport(rport); 5539 if (status != 0 && status != SUCCESS) 5540 return status; 5541 5542 lpfc_cmd = (struct lpfc_io_buf *)cmnd->host_scribble; 5543 if (!lpfc_cmd) 5544 return ret; 5545 5546 /* Guard against IO completion being called at same time */ 5547 spin_lock_irqsave(&lpfc_cmd->buf_lock, flags); 5548 5549 spin_lock(&phba->hbalock); 5550 /* driver queued commands are in process of being flushed */ 5551 if (test_bit(HBA_IOQ_FLUSH, &phba->hba_flag)) { 5552 lpfc_printf_vlog(vport, KERN_WARNING, LOG_FCP, 5553 "3168 SCSI Layer abort requested I/O has been " 5554 "flushed by LLD.\n"); 5555 ret = FAILED; 5556 goto out_unlock_hba; 5557 } 5558 5559 if (!lpfc_cmd->pCmd) { 5560 lpfc_printf_vlog(vport, KERN_WARNING, LOG_FCP, 5561 "2873 SCSI Layer I/O Abort Request IO CMPL Status " 5562 "x%x ID %d LUN %llu\n", 5563 SUCCESS, cmnd->device->id, cmnd->device->lun); 5564 goto out_unlock_hba; 5565 } 5566 5567 iocb = &lpfc_cmd->cur_iocbq; 5568 if (phba->sli_rev == LPFC_SLI_REV4) { 5569 /* if the io_wq & pring are gone, the port was reset. */ 5570 if (!phba->sli4_hba.hdwq[iocb->hba_wqidx].io_wq || 5571 !phba->sli4_hba.hdwq[iocb->hba_wqidx].io_wq->pring) { 5572 lpfc_printf_vlog(vport, KERN_WARNING, LOG_FCP, 5573 "2877 SCSI Layer I/O Abort Request " 5574 "IO CMPL Status x%x ID %d LUN %llu " 5575 "HBA_SETUP %d\n", FAILED, 5576 cmnd->device->id, 5577 (u64)cmnd->device->lun, 5578 test_bit(HBA_SETUP, &phba->hba_flag)); 5579 ret = FAILED; 5580 goto out_unlock_hba; 5581 } 5582 pring_s4 = phba->sli4_hba.hdwq[iocb->hba_wqidx].io_wq->pring; 5583 spin_lock(&pring_s4->ring_lock); 5584 } 5585 /* the command is in process of being cancelled */ 5586 if (!(iocb->cmd_flag & LPFC_IO_ON_TXCMPLQ)) { 5587 lpfc_printf_vlog(vport, KERN_WARNING, LOG_FCP, 5588 "3169 SCSI Layer abort requested I/O has been " 5589 "cancelled by LLD.\n"); 5590 ret = FAILED; 5591 goto out_unlock_ring; 5592 } 5593 /* 5594 * If pCmd field of the corresponding lpfc_io_buf structure 5595 * points to a different SCSI command, then the driver has 5596 * already completed this command, but the midlayer did not 5597 * see the completion before the eh fired. Just return SUCCESS. 5598 */ 5599 if (lpfc_cmd->pCmd != cmnd) { 5600 lpfc_printf_vlog(vport, KERN_WARNING, LOG_FCP, 5601 "3170 SCSI Layer abort requested I/O has been " 5602 "completed by LLD.\n"); 5603 goto out_unlock_ring; 5604 } 5605 5606 WARN_ON(iocb->io_buf != lpfc_cmd); 5607 5608 /* abort issued in recovery is still in progress */ 5609 if (iocb->cmd_flag & LPFC_DRIVER_ABORTED) { 5610 lpfc_printf_vlog(vport, KERN_WARNING, LOG_FCP, 5611 "3389 SCSI Layer I/O Abort Request is pending\n"); 5612 if (phba->sli_rev == LPFC_SLI_REV4) 5613 spin_unlock(&pring_s4->ring_lock); 5614 spin_unlock(&phba->hbalock); 5615 spin_unlock_irqrestore(&lpfc_cmd->buf_lock, flags); 5616 goto wait_for_cmpl; 5617 } 5618 5619 lpfc_cmd->waitq = &waitq; 5620 if (phba->sli_rev == LPFC_SLI_REV4) { 5621 spin_unlock(&pring_s4->ring_lock); 5622 ret_val = lpfc_sli4_issue_abort_iotag(phba, iocb, 5623 lpfc_sli_abort_fcp_cmpl); 5624 } else { 5625 pring = &phba->sli.sli3_ring[LPFC_FCP_RING]; 5626 ret_val = lpfc_sli_issue_abort_iotag(phba, pring, iocb, 5627 lpfc_sli_abort_fcp_cmpl); 5628 } 5629 5630 /* Make sure HBA is alive */ 5631 lpfc_issue_hb_tmo(phba); 5632 5633 if (ret_val != IOCB_SUCCESS) { 5634 /* Indicate the IO is not being aborted by the driver. */ 5635 lpfc_cmd->waitq = NULL; 5636 ret = FAILED; 5637 goto out_unlock_hba; 5638 } 5639 5640 /* no longer need the lock after this point */ 5641 spin_unlock(&phba->hbalock); 5642 spin_unlock_irqrestore(&lpfc_cmd->buf_lock, flags); 5643 5644 if (phba->cfg_poll & DISABLE_FCP_RING_INT) 5645 lpfc_sli_handle_fast_ring_event(phba, 5646 &phba->sli.sli3_ring[LPFC_FCP_RING], HA_R0RE_REQ); 5647 5648wait_for_cmpl: 5649 /* 5650 * cmd_flag is set to LPFC_DRIVER_ABORTED before we wait 5651 * for abort to complete. 5652 */ 5653 wait_event_timeout(waitq, (lpfc_cmd->pCmd != cmnd), 5654 secs_to_jiffies(2*vport->cfg_devloss_tmo)); 5655 5656 spin_lock(&lpfc_cmd->buf_lock); 5657 5658 if (lpfc_cmd->pCmd == cmnd) { 5659 ret = FAILED; 5660 lpfc_printf_vlog(vport, KERN_ERR, LOG_TRACE_EVENT, 5661 "0748 abort handler timed out waiting " 5662 "for aborting I/O (xri:x%x) to complete: " 5663 "ret %#x, ID %d, LUN %llu\n", 5664 iocb->sli4_xritag, ret, 5665 cmnd->device->id, cmnd->device->lun); 5666 } 5667 5668 lpfc_cmd->waitq = NULL; 5669 5670 spin_unlock(&lpfc_cmd->buf_lock); 5671 goto out; 5672 5673out_unlock_ring: 5674 if (phba->sli_rev == LPFC_SLI_REV4) 5675 spin_unlock(&pring_s4->ring_lock); 5676out_unlock_hba: 5677 spin_unlock(&phba->hbalock); 5678 spin_unlock_irqrestore(&lpfc_cmd->buf_lock, flags); 5679out: 5680 lpfc_printf_vlog(vport, KERN_WARNING, LOG_FCP, 5681 "0749 SCSI Layer I/O Abort Request Status x%x ID %d " 5682 "LUN %llu\n", ret, cmnd->device->id, 5683 cmnd->device->lun); 5684 return ret; 5685} 5686 5687static char * 5688lpfc_taskmgmt_name(uint8_t task_mgmt_cmd) 5689{ 5690 switch (task_mgmt_cmd) { 5691 case FCP_ABORT_TASK_SET: 5692 return "ABORT_TASK_SET"; 5693 case FCP_CLEAR_TASK_SET: 5694 return "FCP_CLEAR_TASK_SET"; 5695 case FCP_BUS_RESET: 5696 return "FCP_BUS_RESET"; 5697 case FCP_LUN_RESET: 5698 return "FCP_LUN_RESET"; 5699 case FCP_TARGET_RESET: 5700 return "FCP_TARGET_RESET"; 5701 case FCP_CLEAR_ACA: 5702 return "FCP_CLEAR_ACA"; 5703 case FCP_TERMINATE_TASK: 5704 return "FCP_TERMINATE_TASK"; 5705 default: 5706 return "unknown"; 5707 } 5708} 5709 5710 5711/** 5712 * lpfc_check_fcp_rsp - check the returned fcp_rsp to see if task failed 5713 * @vport: The virtual port for which this call is being executed. 5714 * @lpfc_cmd: Pointer to lpfc_io_buf data structure. 5715 * 5716 * This routine checks the FCP RSP INFO to see if the tsk mgmt command succeded 5717 * 5718 * Return code : 5719 * 0x2003 - Error 5720 * 0x2002 - Success 5721 **/ 5722static int 5723lpfc_check_fcp_rsp(struct lpfc_vport *vport, struct lpfc_io_buf *lpfc_cmd) 5724{ 5725 struct fcp_rsp *fcprsp = lpfc_cmd->fcp_rsp; 5726 uint32_t rsp_info; 5727 uint32_t rsp_len; 5728 uint8_t rsp_info_code; 5729 int ret = FAILED; 5730 5731 5732 if (fcprsp == NULL) 5733 lpfc_printf_vlog(vport, KERN_INFO, LOG_FCP, 5734 "0703 fcp_rsp is missing\n"); 5735 else { 5736 rsp_info = fcprsp->rspStatus2; 5737 rsp_len = be32_to_cpu(fcprsp->rspRspLen); 5738 rsp_info_code = fcprsp->rspInfo3; 5739 5740 5741 lpfc_printf_vlog(vport, KERN_INFO, 5742 LOG_FCP, 5743 "0706 fcp_rsp valid 0x%x," 5744 " rsp len=%d code 0x%x\n", 5745 rsp_info, 5746 rsp_len, rsp_info_code); 5747 5748 /* If FCP_RSP_LEN_VALID bit is one, then the FCP_RSP_LEN 5749 * field specifies the number of valid bytes of FCP_RSP_INFO. 5750 * The FCP_RSP_LEN field shall be set to 0x04 or 0x08 5751 */ 5752 if ((fcprsp->rspStatus2 & RSP_LEN_VALID) && 5753 ((rsp_len == 8) || (rsp_len == 4))) { 5754 switch (rsp_info_code) { 5755 case RSP_NO_FAILURE: 5756 lpfc_printf_vlog(vport, KERN_INFO, LOG_FCP, 5757 "0715 Task Mgmt No Failure\n"); 5758 ret = SUCCESS; 5759 break; 5760 case RSP_TM_NOT_SUPPORTED: /* TM rejected */ 5761 lpfc_printf_vlog(vport, KERN_INFO, LOG_FCP, 5762 "0716 Task Mgmt Target " 5763 "reject\n"); 5764 break; 5765 case RSP_TM_NOT_COMPLETED: /* TM failed */ 5766 lpfc_printf_vlog(vport, KERN_INFO, LOG_FCP, 5767 "0717 Task Mgmt Target " 5768 "failed TM\n"); 5769 break; 5770 case RSP_TM_INVALID_LU: /* TM to invalid LU! */ 5771 lpfc_printf_vlog(vport, KERN_INFO, LOG_FCP, 5772 "0718 Task Mgmt to invalid " 5773 "LUN\n"); 5774 break; 5775 } 5776 } 5777 } 5778 return ret; 5779} 5780 5781 5782/** 5783 * lpfc_send_taskmgmt - Generic SCSI Task Mgmt Handler 5784 * @vport: The virtual port for which this call is being executed. 5785 * @rport: Pointer to remote port 5786 * @tgt_id: Target ID of remote device. 5787 * @lun_id: Lun number for the TMF 5788 * @task_mgmt_cmd: type of TMF to send 5789 * 5790 * This routine builds and sends a TMF (SCSI Task Mgmt Function) to 5791 * a remote port. 5792 * 5793 * Return Code: 5794 * 0x2003 - Error 5795 * 0x2002 - Success. 5796 **/ 5797static int 5798lpfc_send_taskmgmt(struct lpfc_vport *vport, struct fc_rport *rport, 5799 unsigned int tgt_id, uint64_t lun_id, 5800 uint8_t task_mgmt_cmd) 5801{ 5802 struct lpfc_hba *phba = vport->phba; 5803 struct lpfc_io_buf *lpfc_cmd; 5804 struct lpfc_iocbq *iocbq; 5805 struct lpfc_iocbq *iocbqrsp; 5806 struct lpfc_rport_data *rdata; 5807 struct lpfc_nodelist *pnode; 5808 int ret; 5809 int status; 5810 5811 rdata = rport->dd_data; 5812 if (!rdata || !rdata->pnode) 5813 return FAILED; 5814 pnode = rdata->pnode; 5815 5816 lpfc_cmd = lpfc_get_scsi_buf(phba, rdata->pnode, NULL); 5817 if (lpfc_cmd == NULL) 5818 return FAILED; 5819 lpfc_cmd->timeout = phba->cfg_task_mgmt_tmo; 5820 lpfc_cmd->rdata = rdata; 5821 lpfc_cmd->pCmd = NULL; 5822 lpfc_cmd->ndlp = pnode; 5823 5824 status = phba->lpfc_scsi_prep_task_mgmt_cmd(vport, lpfc_cmd, lun_id, 5825 task_mgmt_cmd); 5826 if (!status) { 5827 lpfc_release_scsi_buf(phba, lpfc_cmd); 5828 return FAILED; 5829 } 5830 5831 iocbq = &lpfc_cmd->cur_iocbq; 5832 iocbqrsp = lpfc_sli_get_iocbq(phba); 5833 if (iocbqrsp == NULL) { 5834 lpfc_release_scsi_buf(phba, lpfc_cmd); 5835 return FAILED; 5836 } 5837 iocbq->cmd_cmpl = lpfc_tskmgmt_def_cmpl; 5838 iocbq->vport = vport; 5839 5840 lpfc_printf_vlog(vport, KERN_INFO, LOG_FCP, 5841 "0702 Issue %s to TGT %d LUN %llu " 5842 "rpi x%x nlp_flag x%lx Data: x%x x%x\n", 5843 lpfc_taskmgmt_name(task_mgmt_cmd), tgt_id, lun_id, 5844 pnode->nlp_rpi, pnode->nlp_flag, iocbq->sli4_xritag, 5845 iocbq->cmd_flag); 5846 5847 status = lpfc_sli_issue_iocb_wait(phba, LPFC_FCP_RING, 5848 iocbq, iocbqrsp, lpfc_cmd->timeout); 5849 if ((status != IOCB_SUCCESS) || 5850 (get_job_ulpstatus(phba, iocbqrsp) != IOSTAT_SUCCESS)) { 5851 if (status != IOCB_SUCCESS || 5852 get_job_ulpstatus(phba, iocbqrsp) != IOSTAT_FCP_RSP_ERROR) 5853 lpfc_printf_vlog(vport, KERN_ERR, LOG_TRACE_EVENT, 5854 "0727 TMF %s to TGT %d LUN %llu " 5855 "failed (%d, %d) cmd_flag x%x\n", 5856 lpfc_taskmgmt_name(task_mgmt_cmd), 5857 tgt_id, lun_id, 5858 get_job_ulpstatus(phba, iocbqrsp), 5859 get_job_word4(phba, iocbqrsp), 5860 iocbq->cmd_flag); 5861 /* if ulpStatus != IOCB_SUCCESS, then status == IOCB_SUCCESS */ 5862 if (status == IOCB_SUCCESS) { 5863 if (get_job_ulpstatus(phba, iocbqrsp) == 5864 IOSTAT_FCP_RSP_ERROR) 5865 /* Something in the FCP_RSP was invalid. 5866 * Check conditions */ 5867 ret = lpfc_check_fcp_rsp(vport, lpfc_cmd); 5868 else 5869 ret = FAILED; 5870 } else if ((status == IOCB_TIMEDOUT) || 5871 (status == IOCB_ABORTED)) { 5872 ret = TIMEOUT_ERROR; 5873 } else { 5874 ret = FAILED; 5875 } 5876 } else 5877 ret = SUCCESS; 5878 5879 lpfc_sli_release_iocbq(phba, iocbqrsp); 5880 5881 if (status != IOCB_TIMEDOUT) 5882 lpfc_release_scsi_buf(phba, lpfc_cmd); 5883 5884 return ret; 5885} 5886 5887/** 5888 * lpfc_chk_tgt_mapped - 5889 * @vport: The virtual port to check on 5890 * @rport: Pointer to fc_rport data structure. 5891 * 5892 * This routine delays until the scsi target (aka rport) for the 5893 * command exists (is present and logged in) or we declare it non-existent. 5894 * 5895 * Return code : 5896 * 0x2003 - Error 5897 * 0x2002 - Success 5898 **/ 5899static int 5900lpfc_chk_tgt_mapped(struct lpfc_vport *vport, struct fc_rport *rport) 5901{ 5902 struct lpfc_rport_data *rdata; 5903 struct lpfc_nodelist *pnode = NULL; 5904 unsigned long later; 5905 5906 rdata = rport->dd_data; 5907 if (!rdata) { 5908 lpfc_printf_vlog(vport, KERN_INFO, LOG_FCP, 5909 "0797 Tgt Map rport failure: rdata x%px\n", rdata); 5910 return FAILED; 5911 } 5912 pnode = rdata->pnode; 5913 5914 /* 5915 * If target is not in a MAPPED state, delay until 5916 * target is rediscovered or devloss timeout expires. 5917 */ 5918 later = secs_to_jiffies(2 * vport->cfg_devloss_tmo) + jiffies; 5919 while (time_after(later, jiffies)) { 5920 if (!pnode) 5921 return FAILED; 5922 if (pnode->nlp_state == NLP_STE_MAPPED_NODE) 5923 return SUCCESS; 5924 schedule_timeout_uninterruptible(msecs_to_jiffies(500)); 5925 rdata = rport->dd_data; 5926 if (!rdata) 5927 return FAILED; 5928 pnode = rdata->pnode; 5929 } 5930 if (!pnode || (pnode->nlp_state != NLP_STE_MAPPED_NODE)) 5931 return FAILED; 5932 return SUCCESS; 5933} 5934 5935/** 5936 * lpfc_reset_flush_io_context - 5937 * @vport: The virtual port (scsi_host) for the flush context 5938 * @tgt_id: If aborting by Target context - specifies the target id 5939 * @lun_id: If aborting by Lun context - specifies the lun id 5940 * @context: specifies the context level to flush at. 5941 * 5942 * After a reset condition via TMF, we need to flush orphaned i/o 5943 * contexts from the adapter. This routine aborts any contexts 5944 * outstanding, then waits for their completions. The wait is 5945 * bounded by devloss_tmo though. 5946 * 5947 * Return code : 5948 * 0x2003 - Error 5949 * 0x2002 - Success 5950 **/ 5951static int 5952lpfc_reset_flush_io_context(struct lpfc_vport *vport, uint16_t tgt_id, 5953 uint64_t lun_id, lpfc_ctx_cmd context) 5954{ 5955 struct lpfc_hba *phba = vport->phba; 5956 unsigned long later; 5957 int cnt; 5958 5959 cnt = lpfc_sli_sum_iocb(vport, tgt_id, lun_id, context); 5960 if (cnt) 5961 lpfc_sli_abort_taskmgmt(vport, 5962 &phba->sli.sli3_ring[LPFC_FCP_RING], 5963 tgt_id, lun_id, context); 5964 later = secs_to_jiffies(2 * vport->cfg_devloss_tmo) + jiffies; 5965 while (time_after(later, jiffies) && cnt) { 5966 schedule_timeout_uninterruptible(msecs_to_jiffies(20)); 5967 cnt = lpfc_sli_sum_iocb(vport, tgt_id, lun_id, context); 5968 } 5969 if (cnt) { 5970 lpfc_printf_vlog(vport, KERN_ERR, LOG_TRACE_EVENT, 5971 "0724 I/O flush failure for context %s : cnt x%x\n", 5972 ((context == LPFC_CTX_LUN) ? "LUN" : 5973 ((context == LPFC_CTX_TGT) ? "TGT" : 5974 ((context == LPFC_CTX_HOST) ? "HOST" : "Unknown"))), 5975 cnt); 5976 return FAILED; 5977 } 5978 return SUCCESS; 5979} 5980 5981/** 5982 * lpfc_device_reset_handler - scsi_host_template eh_device_reset entry point 5983 * @cmnd: Pointer to scsi_cmnd data structure. 5984 * 5985 * This routine does a device reset by sending a LUN_RESET task management 5986 * command. 5987 * 5988 * Return code : 5989 * 0x2003 - Error 5990 * 0x2002 - Success 5991 **/ 5992static int 5993lpfc_device_reset_handler(struct scsi_cmnd *cmnd) 5994{ 5995 struct Scsi_Host *shost = cmnd->device->host; 5996 struct fc_rport *rport = starget_to_rport(scsi_target(cmnd->device)); 5997 struct lpfc_vport *vport = (struct lpfc_vport *) shost->hostdata; 5998 struct lpfc_rport_data *rdata; 5999 struct lpfc_nodelist *pnode; 6000 unsigned tgt_id = cmnd->device->id; 6001 uint64_t lun_id = cmnd->device->lun; 6002 struct lpfc_scsi_event_header scsi_event; 6003 int status; 6004 u32 logit = LOG_FCP; 6005 6006 if (!rport) 6007 return FAILED; 6008 6009 rdata = rport->dd_data; 6010 if (!rdata || !rdata->pnode) { 6011 lpfc_printf_vlog(vport, KERN_ERR, LOG_TRACE_EVENT, 6012 "0798 Device Reset rdata failure: rdata x%px\n", 6013 rdata); 6014 return FAILED; 6015 } 6016 pnode = rdata->pnode; 6017 status = fc_block_rport(rport); 6018 if (status != 0 && status != SUCCESS) 6019 return status; 6020 6021 status = lpfc_chk_tgt_mapped(vport, rport); 6022 if (status == FAILED) { 6023 lpfc_printf_vlog(vport, KERN_ERR, LOG_TRACE_EVENT, 6024 "0721 Device Reset rport failure: rdata x%px\n", rdata); 6025 return FAILED; 6026 } 6027 6028 scsi_event.event_type = FC_REG_SCSI_EVENT; 6029 scsi_event.subcategory = LPFC_EVENT_LUNRESET; 6030 scsi_event.lun = lun_id; 6031 memcpy(scsi_event.wwpn, &pnode->nlp_portname, sizeof(struct lpfc_name)); 6032 memcpy(scsi_event.wwnn, &pnode->nlp_nodename, sizeof(struct lpfc_name)); 6033 6034 fc_host_post_vendor_event(shost, fc_get_event_number(), 6035 sizeof(scsi_event), (char *)&scsi_event, LPFC_NL_VENDOR_ID); 6036 6037 status = lpfc_send_taskmgmt(vport, rport, tgt_id, lun_id, 6038 FCP_LUN_RESET); 6039 if (status != SUCCESS) 6040 logit = LOG_TRACE_EVENT; 6041 6042 lpfc_printf_vlog(vport, KERN_ERR, logit, 6043 "0713 SCSI layer issued Device Reset (%d, %llu) " 6044 "return x%x\n", tgt_id, lun_id, status); 6045 6046 /* 6047 * We have to clean up i/o as : they may be orphaned by the TMF; 6048 * or if the TMF failed, they may be in an indeterminate state. 6049 * So, continue on. 6050 * We will report success if all the i/o aborts successfully. 6051 */ 6052 if (status == SUCCESS) 6053 status = lpfc_reset_flush_io_context(vport, tgt_id, lun_id, 6054 LPFC_CTX_LUN); 6055 6056 return status; 6057} 6058 6059/** 6060 * lpfc_target_reset_handler - scsi_host_template eh_target_reset entry point 6061 * @cmnd: Pointer to scsi_cmnd data structure. 6062 * 6063 * This routine does a target reset by sending a TARGET_RESET task management 6064 * command. 6065 * 6066 * Return code : 6067 * 0x2003 - Error 6068 * 0x2002 - Success 6069 **/ 6070static int 6071lpfc_target_reset_handler(struct scsi_cmnd *cmnd) 6072{ 6073 struct Scsi_Host *shost = cmnd->device->host; 6074 struct fc_rport *rport = starget_to_rport(scsi_target(cmnd->device)); 6075 struct lpfc_vport *vport = (struct lpfc_vport *) shost->hostdata; 6076 struct lpfc_rport_data *rdata; 6077 struct lpfc_nodelist *pnode; 6078 unsigned tgt_id = cmnd->device->id; 6079 uint64_t lun_id = cmnd->device->lun; 6080 struct lpfc_scsi_event_header scsi_event; 6081 int status; 6082 u32 logit = LOG_FCP; 6083 u32 dev_loss_tmo = vport->cfg_devloss_tmo; 6084 unsigned long flags; 6085 DECLARE_WAIT_QUEUE_HEAD_ONSTACK(waitq); 6086 6087 if (!rport) 6088 return FAILED; 6089 6090 rdata = rport->dd_data; 6091 if (!rdata || !rdata->pnode) { 6092 lpfc_printf_vlog(vport, KERN_ERR, LOG_TRACE_EVENT, 6093 "0799 Target Reset rdata failure: rdata x%px\n", 6094 rdata); 6095 return FAILED; 6096 } 6097 pnode = rdata->pnode; 6098 status = fc_block_rport(rport); 6099 if (status != 0 && status != SUCCESS) 6100 return status; 6101 6102 status = lpfc_chk_tgt_mapped(vport, rport); 6103 if (status == FAILED) { 6104 lpfc_printf_vlog(vport, KERN_ERR, LOG_TRACE_EVENT, 6105 "0722 Target Reset rport failure: rdata x%px\n", rdata); 6106 if (pnode) { 6107 clear_bit(NLP_NPR_ADISC, &pnode->nlp_flag); 6108 spin_lock_irqsave(&pnode->lock, flags); 6109 pnode->nlp_fcp_info &= ~NLP_FCP_2_DEVICE; 6110 spin_unlock_irqrestore(&pnode->lock, flags); 6111 } 6112 status = lpfc_reset_flush_io_context(vport, tgt_id, lun_id, 6113 LPFC_CTX_TGT); 6114 if (status != SUCCESS) { 6115 lpfc_printf_vlog(vport, KERN_ERR, LOG_FCP, 6116 "0726 Target Reset flush status x%x\n", 6117 status); 6118 return status; 6119 } 6120 return FAST_IO_FAIL; 6121 } 6122 6123 scsi_event.event_type = FC_REG_SCSI_EVENT; 6124 scsi_event.subcategory = LPFC_EVENT_TGTRESET; 6125 scsi_event.lun = 0; 6126 memcpy(scsi_event.wwpn, &pnode->nlp_portname, sizeof(struct lpfc_name)); 6127 memcpy(scsi_event.wwnn, &pnode->nlp_nodename, sizeof(struct lpfc_name)); 6128 6129 fc_host_post_vendor_event(shost, fc_get_event_number(), 6130 sizeof(scsi_event), (char *)&scsi_event, LPFC_NL_VENDOR_ID); 6131 6132 status = lpfc_send_taskmgmt(vport, rport, tgt_id, lun_id, 6133 FCP_TARGET_RESET); 6134 if (status != SUCCESS) { 6135 logit = LOG_TRACE_EVENT; 6136 6137 /* Issue LOGO, if no LOGO is outstanding */ 6138 spin_lock_irqsave(&pnode->lock, flags); 6139 if (!test_bit(NLP_WAIT_FOR_LOGO, &pnode->save_flags) && 6140 !pnode->logo_waitq) { 6141 pnode->logo_waitq = &waitq; 6142 pnode->nlp_fcp_info &= ~NLP_FCP_2_DEVICE; 6143 spin_unlock_irqrestore(&pnode->lock, flags); 6144 set_bit(NLP_ISSUE_LOGO, &pnode->nlp_flag); 6145 set_bit(NLP_WAIT_FOR_LOGO, &pnode->save_flags); 6146 lpfc_unreg_rpi(vport, pnode); 6147 wait_event_timeout(waitq, 6148 !test_bit(NLP_WAIT_FOR_LOGO, 6149 &pnode->save_flags), 6150 secs_to_jiffies(dev_loss_tmo)); 6151 6152 if (test_and_clear_bit(NLP_WAIT_FOR_LOGO, 6153 &pnode->save_flags)) 6154 lpfc_printf_vlog(vport, KERN_ERR, logit, 6155 "0725 SCSI layer TGTRST " 6156 "failed & LOGO TMO (%d, %llu) " 6157 "return x%x\n", 6158 tgt_id, lun_id, status); 6159 spin_lock_irqsave(&pnode->lock, flags); 6160 pnode->logo_waitq = NULL; 6161 spin_unlock_irqrestore(&pnode->lock, flags); 6162 status = SUCCESS; 6163 6164 } else { 6165 spin_unlock_irqrestore(&pnode->lock, flags); 6166 status = FAILED; 6167 } 6168 } 6169 6170 lpfc_printf_vlog(vport, KERN_ERR, logit, 6171 "0723 SCSI layer issued Target Reset (%d, %llu) " 6172 "return x%x\n", tgt_id, lun_id, status); 6173 6174 /* 6175 * We have to clean up i/o as : they may be orphaned by the TMF; 6176 * or if the TMF failed, they may be in an indeterminate state. 6177 * So, continue on. 6178 * We will report success if all the i/o aborts successfully. 6179 */ 6180 if (status == SUCCESS) 6181 status = lpfc_reset_flush_io_context(vport, tgt_id, lun_id, 6182 LPFC_CTX_TGT); 6183 return status; 6184} 6185 6186/** 6187 * lpfc_host_reset_handler - scsi_host_template eh_host_reset_handler entry pt 6188 * @cmnd: Pointer to scsi_cmnd data structure. 6189 * 6190 * This routine does host reset to the adaptor port. It brings the HBA 6191 * offline, performs a board restart, and then brings the board back online. 6192 * The lpfc_offline calls lpfc_sli_hba_down which will abort and local 6193 * reject all outstanding SCSI commands to the host and error returned 6194 * back to SCSI mid-level. As this will be SCSI mid-level's last resort 6195 * of error handling, it will only return error if resetting of the adapter 6196 * is not successful; in all other cases, will return success. 6197 * 6198 * Return code : 6199 * 0x2003 - Error 6200 * 0x2002 - Success 6201 **/ 6202static int 6203lpfc_host_reset_handler(struct scsi_cmnd *cmnd) 6204{ 6205 struct Scsi_Host *shost = cmnd->device->host; 6206 struct lpfc_vport *vport = (struct lpfc_vport *) shost->hostdata; 6207 struct lpfc_hba *phba = vport->phba; 6208 int rc, ret = SUCCESS; 6209 6210 lpfc_printf_vlog(vport, KERN_ERR, LOG_FCP, 6211 "3172 SCSI layer issued Host Reset\n"); 6212 6213 lpfc_offline_prep(phba, LPFC_MBX_WAIT); 6214 lpfc_offline(phba); 6215 rc = lpfc_sli_brdrestart(phba); 6216 if (rc) 6217 goto error; 6218 6219 /* Wait for successful restart of adapter */ 6220 if (phba->sli_rev < LPFC_SLI_REV4) { 6221 rc = lpfc_sli_chipset_init(phba); 6222 if (rc) 6223 goto error; 6224 } 6225 6226 rc = lpfc_online(phba); 6227 if (rc) 6228 goto error; 6229 6230 lpfc_unblock_mgmt_io(phba); 6231 6232 return ret; 6233error: 6234 lpfc_printf_vlog(vport, KERN_ERR, LOG_TRACE_EVENT, 6235 "3323 Failed host reset\n"); 6236 lpfc_unblock_mgmt_io(phba); 6237 return FAILED; 6238} 6239 6240/** 6241 * lpfc_sdev_init - scsi_host_template sdev_init entry point 6242 * @sdev: Pointer to scsi_device. 6243 * 6244 * This routine populates the cmds_per_lun count + 2 scsi_bufs into this host's 6245 * globally available list of scsi buffers. This routine also makes sure scsi 6246 * buffer is not allocated more than HBA limit conveyed to midlayer. This list 6247 * of scsi buffer exists for the lifetime of the driver. 6248 * 6249 * Return codes: 6250 * non-0 - Error 6251 * 0 - Success 6252 **/ 6253static int 6254lpfc_sdev_init(struct scsi_device *sdev) 6255{ 6256 struct lpfc_vport *vport = (struct lpfc_vport *) sdev->host->hostdata; 6257 struct lpfc_hba *phba = vport->phba; 6258 struct fc_rport *rport = starget_to_rport(scsi_target(sdev)); 6259 uint32_t total = 0; 6260 uint32_t num_to_alloc = 0; 6261 int num_allocated = 0; 6262 uint32_t sdev_cnt; 6263 struct lpfc_device_data *device_data; 6264 unsigned long flags; 6265 struct lpfc_name target_wwpn; 6266 6267 if (!rport || fc_remote_port_chkready(rport)) 6268 return -ENXIO; 6269 6270 if (phba->cfg_fof) { 6271 6272 /* 6273 * Check to see if the device data structure for the lun 6274 * exists. If not, create one. 6275 */ 6276 6277 u64_to_wwn(rport->port_name, target_wwpn.u.wwn); 6278 spin_lock_irqsave(&phba->devicelock, flags); 6279 device_data = __lpfc_get_device_data(phba, 6280 &phba->luns, 6281 &vport->fc_portname, 6282 &target_wwpn, 6283 sdev->lun); 6284 if (!device_data) { 6285 spin_unlock_irqrestore(&phba->devicelock, flags); 6286 device_data = lpfc_create_device_data(phba, 6287 &vport->fc_portname, 6288 &target_wwpn, 6289 sdev->lun, 6290 phba->cfg_XLanePriority, 6291 true); 6292 if (!device_data) 6293 return -ENOMEM; 6294 spin_lock_irqsave(&phba->devicelock, flags); 6295 list_add_tail(&device_data->listentry, &phba->luns); 6296 } 6297 device_data->rport_data = rport->dd_data; 6298 device_data->available = true; 6299 spin_unlock_irqrestore(&phba->devicelock, flags); 6300 sdev->hostdata = device_data; 6301 } else { 6302 sdev->hostdata = rport->dd_data; 6303 } 6304 sdev_cnt = atomic_inc_return(&phba->sdev_cnt); 6305 6306 /* For SLI4, all IO buffers are pre-allocated */ 6307 if (phba->sli_rev == LPFC_SLI_REV4) 6308 return 0; 6309 6310 /* This code path is now ONLY for SLI3 adapters */ 6311 6312 /* 6313 * Populate the cmds_per_lun count scsi_bufs into this host's globally 6314 * available list of scsi buffers. Don't allocate more than the 6315 * HBA limit conveyed to the midlayer via the host structure. The 6316 * formula accounts for the lun_queue_depth + error handlers + 1 6317 * extra. This list of scsi bufs exists for the lifetime of the driver. 6318 */ 6319 total = phba->total_scsi_bufs; 6320 num_to_alloc = vport->cfg_lun_queue_depth + 2; 6321 6322 /* If allocated buffers are enough do nothing */ 6323 if ((sdev_cnt * (vport->cfg_lun_queue_depth + 2)) < total) 6324 return 0; 6325 6326 /* Allow some exchanges to be available always to complete discovery */ 6327 if (total >= phba->cfg_hba_queue_depth - LPFC_DISC_IOCB_BUFF_COUNT ) { 6328 lpfc_printf_vlog(vport, KERN_WARNING, LOG_FCP, 6329 "0704 At limitation of %d preallocated " 6330 "command buffers\n", total); 6331 return 0; 6332 /* Allow some exchanges to be available always to complete discovery */ 6333 } else if (total + num_to_alloc > 6334 phba->cfg_hba_queue_depth - LPFC_DISC_IOCB_BUFF_COUNT ) { 6335 lpfc_printf_vlog(vport, KERN_WARNING, LOG_FCP, 6336 "0705 Allocation request of %d " 6337 "command buffers will exceed max of %d. " 6338 "Reducing allocation request to %d.\n", 6339 num_to_alloc, phba->cfg_hba_queue_depth, 6340 (phba->cfg_hba_queue_depth - total)); 6341 num_to_alloc = phba->cfg_hba_queue_depth - total; 6342 } 6343 num_allocated = lpfc_new_scsi_buf_s3(vport, num_to_alloc); 6344 if (num_to_alloc != num_allocated) { 6345 lpfc_printf_vlog(vport, KERN_ERR, LOG_TRACE_EVENT, 6346 "0708 Allocation request of %d " 6347 "command buffers did not succeed. " 6348 "Allocated %d buffers.\n", 6349 num_to_alloc, num_allocated); 6350 } 6351 if (num_allocated > 0) 6352 phba->total_scsi_bufs += num_allocated; 6353 return 0; 6354} 6355 6356/** 6357 * lpfc_sdev_configure - scsi_host_template sdev_configure entry point 6358 * @sdev: Pointer to scsi_device. 6359 * @lim: Request queue limits. 6360 * 6361 * This routine configures following items 6362 * - Tag command queuing support for @sdev if supported. 6363 * - Enable SLI polling for fcp ring if ENABLE_FCP_RING_POLLING flag is set. 6364 * 6365 * Return codes: 6366 * 0 - Success 6367 **/ 6368static int 6369lpfc_sdev_configure(struct scsi_device *sdev, struct queue_limits *lim) 6370{ 6371 struct lpfc_vport *vport = (struct lpfc_vport *) sdev->host->hostdata; 6372 struct lpfc_hba *phba = vport->phba; 6373 6374 scsi_change_queue_depth(sdev, vport->cfg_lun_queue_depth); 6375 6376 if (phba->cfg_poll & ENABLE_FCP_RING_POLLING) { 6377 lpfc_sli_handle_fast_ring_event(phba, 6378 &phba->sli.sli3_ring[LPFC_FCP_RING], HA_R0RE_REQ); 6379 if (phba->cfg_poll & DISABLE_FCP_RING_INT) 6380 lpfc_poll_rearm_timer(phba); 6381 } 6382 6383 return 0; 6384} 6385 6386/** 6387 * lpfc_sdev_destroy - sdev_destroy entry point of SHT data structure 6388 * @sdev: Pointer to scsi_device. 6389 * 6390 * This routine sets @sdev hostatdata filed to null. 6391 **/ 6392static void 6393lpfc_sdev_destroy(struct scsi_device *sdev) 6394{ 6395 struct lpfc_vport *vport = (struct lpfc_vport *) sdev->host->hostdata; 6396 struct lpfc_hba *phba = vport->phba; 6397 unsigned long flags; 6398 struct lpfc_device_data *device_data = sdev->hostdata; 6399 6400 atomic_dec(&phba->sdev_cnt); 6401 if ((phba->cfg_fof) && (device_data)) { 6402 spin_lock_irqsave(&phba->devicelock, flags); 6403 device_data->available = false; 6404 if (!device_data->oas_enabled) 6405 lpfc_delete_device_data(phba, device_data); 6406 spin_unlock_irqrestore(&phba->devicelock, flags); 6407 } 6408 sdev->hostdata = NULL; 6409 return; 6410} 6411 6412/** 6413 * lpfc_create_device_data - creates and initializes device data structure for OAS 6414 * @phba: Pointer to host bus adapter structure. 6415 * @vport_wwpn: Pointer to vport's wwpn information 6416 * @target_wwpn: Pointer to target's wwpn information 6417 * @lun: Lun on target 6418 * @pri: Priority 6419 * @atomic_create: Flag to indicate if memory should be allocated using the 6420 * GFP_ATOMIC flag or not. 6421 * 6422 * This routine creates a device data structure which will contain identifying 6423 * information for the device (host wwpn, target wwpn, lun), state of OAS, 6424 * whether or not the corresponding lun is available by the system, 6425 * and pointer to the rport data. 6426 * 6427 * Return codes: 6428 * NULL - Error 6429 * Pointer to lpfc_device_data - Success 6430 **/ 6431struct lpfc_device_data* 6432lpfc_create_device_data(struct lpfc_hba *phba, struct lpfc_name *vport_wwpn, 6433 struct lpfc_name *target_wwpn, uint64_t lun, 6434 uint32_t pri, bool atomic_create) 6435{ 6436 6437 struct lpfc_device_data *lun_info; 6438 gfp_t memory_flags; 6439 6440 if (unlikely(!phba) || !vport_wwpn || !target_wwpn || 6441 !(phba->cfg_fof)) 6442 return NULL; 6443 6444 /* Attempt to create the device data to contain lun info */ 6445 6446 if (atomic_create) 6447 memory_flags = GFP_ATOMIC; 6448 else 6449 memory_flags = GFP_KERNEL; 6450 lun_info = mempool_alloc(phba->device_data_mem_pool, memory_flags); 6451 if (!lun_info) 6452 return NULL; 6453 INIT_LIST_HEAD(&lun_info->listentry); 6454 lun_info->rport_data = NULL; 6455 memcpy(&lun_info->device_id.vport_wwpn, vport_wwpn, 6456 sizeof(struct lpfc_name)); 6457 memcpy(&lun_info->device_id.target_wwpn, target_wwpn, 6458 sizeof(struct lpfc_name)); 6459 lun_info->device_id.lun = lun; 6460 lun_info->oas_enabled = false; 6461 lun_info->priority = pri; 6462 lun_info->available = false; 6463 return lun_info; 6464} 6465 6466/** 6467 * lpfc_delete_device_data - frees a device data structure for OAS 6468 * @phba: Pointer to host bus adapter structure. 6469 * @lun_info: Pointer to device data structure to free. 6470 * 6471 * This routine frees the previously allocated device data structure passed. 6472 * 6473 **/ 6474void 6475lpfc_delete_device_data(struct lpfc_hba *phba, 6476 struct lpfc_device_data *lun_info) 6477{ 6478 6479 if (unlikely(!phba) || !lun_info || 6480 !(phba->cfg_fof)) 6481 return; 6482 6483 if (!list_empty(&lun_info->listentry)) 6484 list_del(&lun_info->listentry); 6485 mempool_free(lun_info, phba->device_data_mem_pool); 6486 return; 6487} 6488 6489/** 6490 * __lpfc_get_device_data - returns the device data for the specified lun 6491 * @phba: Pointer to host bus adapter structure. 6492 * @list: Point to list to search. 6493 * @vport_wwpn: Pointer to vport's wwpn information 6494 * @target_wwpn: Pointer to target's wwpn information 6495 * @lun: Lun on target 6496 * 6497 * This routine searches the list passed for the specified lun's device data. 6498 * This function does not hold locks, it is the responsibility of the caller 6499 * to ensure the proper lock is held before calling the function. 6500 * 6501 * Return codes: 6502 * NULL - Error 6503 * Pointer to lpfc_device_data - Success 6504 **/ 6505struct lpfc_device_data* 6506__lpfc_get_device_data(struct lpfc_hba *phba, struct list_head *list, 6507 struct lpfc_name *vport_wwpn, 6508 struct lpfc_name *target_wwpn, uint64_t lun) 6509{ 6510 6511 struct lpfc_device_data *lun_info; 6512 6513 if (unlikely(!phba) || !list || !vport_wwpn || !target_wwpn || 6514 !phba->cfg_fof) 6515 return NULL; 6516 6517 /* Check to see if the lun is already enabled for OAS. */ 6518 6519 list_for_each_entry(lun_info, list, listentry) { 6520 if ((memcmp(&lun_info->device_id.vport_wwpn, vport_wwpn, 6521 sizeof(struct lpfc_name)) == 0) && 6522 (memcmp(&lun_info->device_id.target_wwpn, target_wwpn, 6523 sizeof(struct lpfc_name)) == 0) && 6524 (lun_info->device_id.lun == lun)) 6525 return lun_info; 6526 } 6527 6528 return NULL; 6529} 6530 6531/** 6532 * lpfc_find_next_oas_lun - searches for the next oas lun 6533 * @phba: Pointer to host bus adapter structure. 6534 * @vport_wwpn: Pointer to vport's wwpn information 6535 * @target_wwpn: Pointer to target's wwpn information 6536 * @starting_lun: Pointer to the lun to start searching for 6537 * @found_vport_wwpn: Pointer to the found lun's vport wwpn information 6538 * @found_target_wwpn: Pointer to the found lun's target wwpn information 6539 * @found_lun: Pointer to the found lun. 6540 * @found_lun_status: Pointer to status of the found lun. 6541 * @found_lun_pri: Pointer to priority of the found lun. 6542 * 6543 * This routine searches the luns list for the specified lun 6544 * or the first lun for the vport/target. If the vport wwpn contains 6545 * a zero value then a specific vport is not specified. In this case 6546 * any vport which contains the lun will be considered a match. If the 6547 * target wwpn contains a zero value then a specific target is not specified. 6548 * In this case any target which contains the lun will be considered a 6549 * match. If the lun is found, the lun, vport wwpn, target wwpn and lun status 6550 * are returned. The function will also return the next lun if available. 6551 * If the next lun is not found, starting_lun parameter will be set to 6552 * NO_MORE_OAS_LUN. 6553 * 6554 * Return codes: 6555 * non-0 - Error 6556 * 0 - Success 6557 **/ 6558bool 6559lpfc_find_next_oas_lun(struct lpfc_hba *phba, struct lpfc_name *vport_wwpn, 6560 struct lpfc_name *target_wwpn, uint64_t *starting_lun, 6561 struct lpfc_name *found_vport_wwpn, 6562 struct lpfc_name *found_target_wwpn, 6563 uint64_t *found_lun, 6564 uint32_t *found_lun_status, 6565 uint32_t *found_lun_pri) 6566{ 6567 6568 unsigned long flags; 6569 struct lpfc_device_data *lun_info; 6570 struct lpfc_device_id *device_id; 6571 uint64_t lun; 6572 bool found = false; 6573 6574 if (unlikely(!phba) || !vport_wwpn || !target_wwpn || 6575 !starting_lun || !found_vport_wwpn || 6576 !found_target_wwpn || !found_lun || !found_lun_status || 6577 (*starting_lun == NO_MORE_OAS_LUN) || 6578 !phba->cfg_fof) 6579 return false; 6580 6581 lun = *starting_lun; 6582 *found_lun = NO_MORE_OAS_LUN; 6583 *starting_lun = NO_MORE_OAS_LUN; 6584 6585 /* Search for lun or the lun closet in value */ 6586 6587 spin_lock_irqsave(&phba->devicelock, flags); 6588 list_for_each_entry(lun_info, &phba->luns, listentry) { 6589 if (((wwn_to_u64(vport_wwpn->u.wwn) == 0) || 6590 (memcmp(&lun_info->device_id.vport_wwpn, vport_wwpn, 6591 sizeof(struct lpfc_name)) == 0)) && 6592 ((wwn_to_u64(target_wwpn->u.wwn) == 0) || 6593 (memcmp(&lun_info->device_id.target_wwpn, target_wwpn, 6594 sizeof(struct lpfc_name)) == 0)) && 6595 (lun_info->oas_enabled)) { 6596 device_id = &lun_info->device_id; 6597 if ((!found) && 6598 ((lun == FIND_FIRST_OAS_LUN) || 6599 (device_id->lun == lun))) { 6600 *found_lun = device_id->lun; 6601 memcpy(found_vport_wwpn, 6602 &device_id->vport_wwpn, 6603 sizeof(struct lpfc_name)); 6604 memcpy(found_target_wwpn, 6605 &device_id->target_wwpn, 6606 sizeof(struct lpfc_name)); 6607 if (lun_info->available) 6608 *found_lun_status = 6609 OAS_LUN_STATUS_EXISTS; 6610 else 6611 *found_lun_status = 0; 6612 *found_lun_pri = lun_info->priority; 6613 if (phba->cfg_oas_flags & OAS_FIND_ANY_VPORT) 6614 memset(vport_wwpn, 0x0, 6615 sizeof(struct lpfc_name)); 6616 if (phba->cfg_oas_flags & OAS_FIND_ANY_TARGET) 6617 memset(target_wwpn, 0x0, 6618 sizeof(struct lpfc_name)); 6619 found = true; 6620 } else if (found) { 6621 *starting_lun = device_id->lun; 6622 memcpy(vport_wwpn, &device_id->vport_wwpn, 6623 sizeof(struct lpfc_name)); 6624 memcpy(target_wwpn, &device_id->target_wwpn, 6625 sizeof(struct lpfc_name)); 6626 break; 6627 } 6628 } 6629 } 6630 spin_unlock_irqrestore(&phba->devicelock, flags); 6631 return found; 6632} 6633 6634/** 6635 * lpfc_enable_oas_lun - enables a lun for OAS operations 6636 * @phba: Pointer to host bus adapter structure. 6637 * @vport_wwpn: Pointer to vport's wwpn information 6638 * @target_wwpn: Pointer to target's wwpn information 6639 * @lun: Lun 6640 * @pri: Priority 6641 * 6642 * This routine enables a lun for oas operations. The routines does so by 6643 * doing the following : 6644 * 6645 * 1) Checks to see if the device data for the lun has been created. 6646 * 2) If found, sets the OAS enabled flag if not set and returns. 6647 * 3) Otherwise, creates a device data structure. 6648 * 4) If successfully created, indicates the device data is for an OAS lun, 6649 * indicates the lun is not available and add to the list of luns. 6650 * 6651 * Return codes: 6652 * false - Error 6653 * true - Success 6654 **/ 6655bool 6656lpfc_enable_oas_lun(struct lpfc_hba *phba, struct lpfc_name *vport_wwpn, 6657 struct lpfc_name *target_wwpn, uint64_t lun, uint8_t pri) 6658{ 6659 6660 struct lpfc_device_data *lun_info; 6661 unsigned long flags; 6662 6663 if (unlikely(!phba) || !vport_wwpn || !target_wwpn || 6664 !phba->cfg_fof) 6665 return false; 6666 6667 spin_lock_irqsave(&phba->devicelock, flags); 6668 6669 /* Check to see if the device data for the lun has been created */ 6670 lun_info = __lpfc_get_device_data(phba, &phba->luns, vport_wwpn, 6671 target_wwpn, lun); 6672 if (lun_info) { 6673 if (!lun_info->oas_enabled) 6674 lun_info->oas_enabled = true; 6675 lun_info->priority = pri; 6676 spin_unlock_irqrestore(&phba->devicelock, flags); 6677 return true; 6678 } 6679 6680 /* Create an lun info structure and add to list of luns */ 6681 lun_info = lpfc_create_device_data(phba, vport_wwpn, target_wwpn, lun, 6682 pri, true); 6683 if (lun_info) { 6684 lun_info->oas_enabled = true; 6685 lun_info->priority = pri; 6686 lun_info->available = false; 6687 list_add_tail(&lun_info->listentry, &phba->luns); 6688 spin_unlock_irqrestore(&phba->devicelock, flags); 6689 return true; 6690 } 6691 spin_unlock_irqrestore(&phba->devicelock, flags); 6692 return false; 6693} 6694 6695/** 6696 * lpfc_disable_oas_lun - disables a lun for OAS operations 6697 * @phba: Pointer to host bus adapter structure. 6698 * @vport_wwpn: Pointer to vport's wwpn information 6699 * @target_wwpn: Pointer to target's wwpn information 6700 * @lun: Lun 6701 * @pri: Priority 6702 * 6703 * This routine disables a lun for oas operations. The routines does so by 6704 * doing the following : 6705 * 6706 * 1) Checks to see if the device data for the lun is created. 6707 * 2) If present, clears the flag indicating this lun is for OAS. 6708 * 3) If the lun is not available by the system, the device data is 6709 * freed. 6710 * 6711 * Return codes: 6712 * false - Error 6713 * true - Success 6714 **/ 6715bool 6716lpfc_disable_oas_lun(struct lpfc_hba *phba, struct lpfc_name *vport_wwpn, 6717 struct lpfc_name *target_wwpn, uint64_t lun, uint8_t pri) 6718{ 6719 6720 struct lpfc_device_data *lun_info; 6721 unsigned long flags; 6722 6723 if (unlikely(!phba) || !vport_wwpn || !target_wwpn || 6724 !phba->cfg_fof) 6725 return false; 6726 6727 spin_lock_irqsave(&phba->devicelock, flags); 6728 6729 /* Check to see if the lun is available. */ 6730 lun_info = __lpfc_get_device_data(phba, 6731 &phba->luns, vport_wwpn, 6732 target_wwpn, lun); 6733 if (lun_info) { 6734 lun_info->oas_enabled = false; 6735 lun_info->priority = pri; 6736 if (!lun_info->available) 6737 lpfc_delete_device_data(phba, lun_info); 6738 spin_unlock_irqrestore(&phba->devicelock, flags); 6739 return true; 6740 } 6741 6742 spin_unlock_irqrestore(&phba->devicelock, flags); 6743 return false; 6744} 6745 6746static int 6747lpfc_no_command(struct Scsi_Host *shost, struct scsi_cmnd *cmnd) 6748{ 6749 return SCSI_MLQUEUE_HOST_BUSY; 6750} 6751 6752static int 6753lpfc_init_no_sdev(struct scsi_device *sdev) 6754{ 6755 return -ENODEV; 6756} 6757 6758static int 6759lpfc_config_no_sdev(struct scsi_device *sdev, struct queue_limits *lim) 6760{ 6761 return -ENODEV; 6762} 6763 6764struct scsi_host_template lpfc_template_nvme = { 6765 .module = THIS_MODULE, 6766 .name = LPFC_DRIVER_NAME, 6767 .proc_name = LPFC_DRIVER_NAME, 6768 .info = lpfc_info, 6769 .queuecommand = lpfc_no_command, 6770 .sdev_init = lpfc_init_no_sdev, 6771 .sdev_configure = lpfc_config_no_sdev, 6772 .scan_finished = lpfc_scan_finished, 6773 .this_id = -1, 6774 .sg_tablesize = 1, 6775 .cmd_per_lun = 1, 6776 .shost_groups = lpfc_hba_groups, 6777 .max_sectors = 0xFFFFFFFF, 6778 .vendor_id = LPFC_NL_VENDOR_ID, 6779 .track_queue_depth = 0, 6780}; 6781 6782struct scsi_host_template lpfc_template = { 6783 .module = THIS_MODULE, 6784 .name = LPFC_DRIVER_NAME, 6785 .proc_name = LPFC_DRIVER_NAME, 6786 .info = lpfc_info, 6787 .queuecommand = lpfc_queuecommand, 6788 .eh_timed_out = fc_eh_timed_out, 6789 .eh_should_retry_cmd = fc_eh_should_retry_cmd, 6790 .eh_abort_handler = lpfc_abort_handler, 6791 .eh_device_reset_handler = lpfc_device_reset_handler, 6792 .eh_target_reset_handler = lpfc_target_reset_handler, 6793 .eh_host_reset_handler = lpfc_host_reset_handler, 6794 .sdev_init = lpfc_sdev_init, 6795 .sdev_configure = lpfc_sdev_configure, 6796 .sdev_destroy = lpfc_sdev_destroy, 6797 .scan_finished = lpfc_scan_finished, 6798 .this_id = -1, 6799 .sg_tablesize = LPFC_DEFAULT_SG_SEG_CNT, 6800 .cmd_per_lun = LPFC_CMD_PER_LUN, 6801 .shost_groups = lpfc_hba_groups, 6802 .max_sectors = 0xFFFFFFFF, 6803 .vendor_id = LPFC_NL_VENDOR_ID, 6804 .change_queue_depth = scsi_change_queue_depth, 6805 .track_queue_depth = 1, 6806}; 6807 6808struct scsi_host_template lpfc_vport_template = { 6809 .module = THIS_MODULE, 6810 .name = LPFC_DRIVER_NAME, 6811 .proc_name = LPFC_DRIVER_NAME, 6812 .info = lpfc_info, 6813 .queuecommand = lpfc_queuecommand, 6814 .eh_timed_out = fc_eh_timed_out, 6815 .eh_should_retry_cmd = fc_eh_should_retry_cmd, 6816 .eh_abort_handler = lpfc_abort_handler, 6817 .eh_device_reset_handler = lpfc_device_reset_handler, 6818 .eh_target_reset_handler = lpfc_target_reset_handler, 6819 .eh_bus_reset_handler = NULL, 6820 .eh_host_reset_handler = NULL, 6821 .sdev_init = lpfc_sdev_init, 6822 .sdev_configure = lpfc_sdev_configure, 6823 .sdev_destroy = lpfc_sdev_destroy, 6824 .scan_finished = lpfc_scan_finished, 6825 .this_id = -1, 6826 .sg_tablesize = LPFC_DEFAULT_SG_SEG_CNT, 6827 .cmd_per_lun = LPFC_CMD_PER_LUN, 6828 .shost_groups = lpfc_vport_groups, 6829 .max_sectors = 0xFFFFFFFF, 6830 .vendor_id = 0, 6831 .change_queue_depth = scsi_change_queue_depth, 6832 .track_queue_depth = 1, 6833};
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