1 /******************************************************************* 2 * This file is part of the Emulex Linux Device Driver for * 3 * Fibre Channel Host Bus Adapters. * 4 * Copyright (C) 2017-2023 Broadcom. All Rights Reserved. The term * 5 * “Broadcom” refers to Broadcom Inc. and/or its subsidiaries. * 6 * Copyright (C) 2004-2016 Emulex. All rights reserved. * 7 * EMULEX and SLI are trademarks of Emulex. * 8 * www.broadcom.com * 9 * Portions Copyright (C) 2004-2005 Christoph Hellwig * 10 * * 11 * This program is free software; you can redistribute it and/or * 12 * modify it under the terms of version 2 of the GNU General * 13 * Public License as published by the Free Software Foundation. * 14 * This program is distributed in the hope that it will be useful. * 15 * ALL EXPRESS OR IMPLIED CONDITIONS, REPRESENTATIONS AND * 16 * WARRANTIES, INCLUDING ANY IMPLIED WARRANTY OF MERCHANTABILITY, * 17 * FITNESS FOR A PARTICULAR PURPOSE, OR NON-INFRINGEMENT, ARE * 18 * DISCLAIMED, EXCEPT TO THE EXTENT THAT SUCH DISCLAIMERS ARE HELD * 19 * TO BE LEGALLY INVALID. See the GNU General Public License for * 20 * more details, a copy of which can be found in the file COPYING * 21 * included with this package. * 22 *******************************************************************/ 23 #include <linux/pci.h> 24 #include <linux/slab.h> 25 #include <linux/interrupt.h> 26 #include <linux/export.h> 27 #include <linux/delay.h> 28 #include <asm/unaligned.h> 29 #include <linux/t10-pi.h> 30 #include <linux/crc-t10dif.h> 31 #include <linux/blk-cgroup.h> 32 #include <net/checksum.h> 33 34 #include <scsi/scsi.h> 35 #include <scsi/scsi_device.h> 36 #include <scsi/scsi_eh.h> 37 #include <scsi/scsi_host.h> 38 #include <scsi/scsi_tcq.h> 39 #include <scsi/scsi_transport_fc.h> 40 41 #include "lpfc_version.h" 42 #include "lpfc_hw4.h" 43 #include "lpfc_hw.h" 44 #include "lpfc_sli.h" 45 #include "lpfc_sli4.h" 46 #include "lpfc_nl.h" 47 #include "lpfc_disc.h" 48 #include "lpfc.h" 49 #include "lpfc_scsi.h" 50 #include "lpfc_logmsg.h" 51 #include "lpfc_crtn.h" 52 #include "lpfc_vport.h" 53 54 #define LPFC_RESET_WAIT 2 55 #define LPFC_ABORT_WAIT 2 56 57 static 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 67 struct 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 73 static struct lpfc_rport_data * 74 lpfc_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 84 static void 85 lpfc_release_scsi_buf_s4(struct lpfc_hba *phba, struct lpfc_io_buf *psb); 86 static void 87 lpfc_release_scsi_buf_s3(struct lpfc_hba *phba, struct lpfc_io_buf *psb); 88 static int 89 lpfc_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 **/ 99 static void 100 lpfc_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 #define LPFC_INVALID_REFTAG ((u32)-1) 113 114 /** 115 * lpfc_rampdown_queue_depth - Post RAMP_DOWN_QUEUE event to worker thread 116 * @phba: The Hba for which this call is being executed. 117 * 118 * This routine is called when there is resource error in driver or firmware. 119 * This routine posts WORKER_RAMP_DOWN_QUEUE event for @phba. This routine 120 * posts at most 1 event each second. This routine wakes up worker thread of 121 * @phba to process WORKER_RAM_DOWN_EVENT event. 122 * 123 * This routine should be called with no lock held. 124 **/ 125 void 126 lpfc_rampdown_queue_depth(struct lpfc_hba *phba) 127 { 128 unsigned long flags; 129 uint32_t evt_posted; 130 unsigned long expires; 131 132 spin_lock_irqsave(&phba->hbalock, flags); 133 atomic_inc(&phba->num_rsrc_err); 134 phba->last_rsrc_error_time = jiffies; 135 136 expires = phba->last_ramp_down_time + QUEUE_RAMP_DOWN_INTERVAL; 137 if (time_after(expires, jiffies)) { 138 spin_unlock_irqrestore(&phba->hbalock, flags); 139 return; 140 } 141 142 phba->last_ramp_down_time = jiffies; 143 144 spin_unlock_irqrestore(&phba->hbalock, flags); 145 146 spin_lock_irqsave(&phba->pport->work_port_lock, flags); 147 evt_posted = phba->pport->work_port_events & WORKER_RAMP_DOWN_QUEUE; 148 if (!evt_posted) 149 phba->pport->work_port_events |= WORKER_RAMP_DOWN_QUEUE; 150 spin_unlock_irqrestore(&phba->pport->work_port_lock, flags); 151 152 if (!evt_posted) 153 lpfc_worker_wake_up(phba); 154 return; 155 } 156 157 /** 158 * lpfc_ramp_down_queue_handler - WORKER_RAMP_DOWN_QUEUE event handler 159 * @phba: The Hba for which this call is being executed. 160 * 161 * This routine is called to process WORKER_RAMP_DOWN_QUEUE event for worker 162 * thread.This routine reduces queue depth for all scsi device on each vport 163 * associated with @phba. 164 **/ 165 void 166 lpfc_ramp_down_queue_handler(struct lpfc_hba *phba) 167 { 168 struct lpfc_vport **vports; 169 struct Scsi_Host *shost; 170 struct scsi_device *sdev; 171 unsigned long new_queue_depth; 172 unsigned long num_rsrc_err, num_cmd_success; 173 int i; 174 175 num_rsrc_err = atomic_read(&phba->num_rsrc_err); 176 num_cmd_success = atomic_read(&phba->num_cmd_success); 177 178 /* 179 * The error and success command counters are global per 180 * driver instance. If another handler has already 181 * operated on this error event, just exit. 182 */ 183 if (num_rsrc_err == 0) 184 return; 185 186 vports = lpfc_create_vport_work_array(phba); 187 if (vports != NULL) 188 for (i = 0; i <= phba->max_vports && vports[i] != NULL; i++) { 189 shost = lpfc_shost_from_vport(vports[i]); 190 shost_for_each_device(sdev, shost) { 191 new_queue_depth = 192 sdev->queue_depth * num_rsrc_err / 193 (num_rsrc_err + num_cmd_success); 194 if (!new_queue_depth) 195 new_queue_depth = sdev->queue_depth - 1; 196 else 197 new_queue_depth = sdev->queue_depth - 198 new_queue_depth; 199 scsi_change_queue_depth(sdev, new_queue_depth); 200 } 201 } 202 lpfc_destroy_vport_work_array(phba, vports); 203 atomic_set(&phba->num_rsrc_err, 0); 204 atomic_set(&phba->num_cmd_success, 0); 205 } 206 207 /** 208 * lpfc_scsi_dev_block - set all scsi hosts to block state 209 * @phba: Pointer to HBA context object. 210 * 211 * This function walks vport list and set each SCSI host to block state 212 * by invoking fc_remote_port_delete() routine. This function is invoked 213 * with EEH when device's PCI slot has been permanently disabled. 214 **/ 215 void 216 lpfc_scsi_dev_block(struct lpfc_hba *phba) 217 { 218 struct lpfc_vport **vports; 219 struct Scsi_Host *shost; 220 struct scsi_device *sdev; 221 struct fc_rport *rport; 222 int i; 223 224 vports = lpfc_create_vport_work_array(phba); 225 if (vports != NULL) 226 for (i = 0; i <= phba->max_vports && vports[i] != NULL; i++) { 227 shost = lpfc_shost_from_vport(vports[i]); 228 shost_for_each_device(sdev, shost) { 229 rport = starget_to_rport(scsi_target(sdev)); 230 fc_remote_port_delete(rport); 231 } 232 } 233 lpfc_destroy_vport_work_array(phba, vports); 234 } 235 236 /** 237 * lpfc_new_scsi_buf_s3 - Scsi buffer allocator for HBA with SLI3 IF spec 238 * @vport: The virtual port for which this call being executed. 239 * @num_to_alloc: The requested number of buffers to allocate. 240 * 241 * This routine allocates a scsi buffer for device with SLI-3 interface spec, 242 * the scsi buffer contains all the necessary information needed to initiate 243 * a SCSI I/O. The non-DMAable buffer region contains information to build 244 * the IOCB. The DMAable region contains memory for the FCP CMND, FCP RSP, 245 * and the initial BPL. In addition to allocating memory, the FCP CMND and 246 * FCP RSP BDEs are setup in the BPL and the BPL BDE is setup in the IOCB. 247 * 248 * Return codes: 249 * int - number of scsi buffers that were allocated. 250 * 0 = failure, less than num_to_alloc is a partial failure. 251 **/ 252 static int 253 lpfc_new_scsi_buf_s3(struct lpfc_vport *vport, int num_to_alloc) 254 { 255 struct lpfc_hba *phba = vport->phba; 256 struct lpfc_io_buf *psb; 257 struct ulp_bde64 *bpl; 258 IOCB_t *iocb; 259 dma_addr_t pdma_phys_fcp_cmd; 260 dma_addr_t pdma_phys_fcp_rsp; 261 dma_addr_t pdma_phys_sgl; 262 uint16_t iotag; 263 int bcnt, bpl_size; 264 265 bpl_size = phba->cfg_sg_dma_buf_size - 266 (sizeof(struct fcp_cmnd) + sizeof(struct fcp_rsp)); 267 268 lpfc_printf_vlog(vport, KERN_INFO, LOG_FCP, 269 "9067 ALLOC %d scsi_bufs: %d (%d + %d + %d)\n", 270 num_to_alloc, phba->cfg_sg_dma_buf_size, 271 (int)sizeof(struct fcp_cmnd), 272 (int)sizeof(struct fcp_rsp), bpl_size); 273 274 for (bcnt = 0; bcnt < num_to_alloc; bcnt++) { 275 psb = kzalloc(sizeof(struct lpfc_io_buf), GFP_KERNEL); 276 if (!psb) 277 break; 278 279 /* 280 * Get memory from the pci pool to map the virt space to pci 281 * bus space for an I/O. The DMA buffer includes space for the 282 * struct fcp_cmnd, struct fcp_rsp and the number of bde's 283 * necessary to support the sg_tablesize. 284 */ 285 psb->data = dma_pool_zalloc(phba->lpfc_sg_dma_buf_pool, 286 GFP_KERNEL, &psb->dma_handle); 287 if (!psb->data) { 288 kfree(psb); 289 break; 290 } 291 292 293 /* Allocate iotag for psb->cur_iocbq. */ 294 iotag = lpfc_sli_next_iotag(phba, &psb->cur_iocbq); 295 if (iotag == 0) { 296 dma_pool_free(phba->lpfc_sg_dma_buf_pool, 297 psb->data, psb->dma_handle); 298 kfree(psb); 299 break; 300 } 301 psb->cur_iocbq.cmd_flag |= LPFC_IO_FCP; 302 303 psb->fcp_cmnd = psb->data; 304 psb->fcp_rsp = psb->data + sizeof(struct fcp_cmnd); 305 psb->dma_sgl = psb->data + sizeof(struct fcp_cmnd) + 306 sizeof(struct fcp_rsp); 307 308 /* Initialize local short-hand pointers. */ 309 bpl = (struct ulp_bde64 *)psb->dma_sgl; 310 pdma_phys_fcp_cmd = psb->dma_handle; 311 pdma_phys_fcp_rsp = psb->dma_handle + sizeof(struct fcp_cmnd); 312 pdma_phys_sgl = psb->dma_handle + sizeof(struct fcp_cmnd) + 313 sizeof(struct fcp_rsp); 314 315 /* 316 * The first two bdes are the FCP_CMD and FCP_RSP. The balance 317 * are sg list bdes. Initialize the first two and leave the 318 * rest for queuecommand. 319 */ 320 bpl[0].addrHigh = le32_to_cpu(putPaddrHigh(pdma_phys_fcp_cmd)); 321 bpl[0].addrLow = le32_to_cpu(putPaddrLow(pdma_phys_fcp_cmd)); 322 bpl[0].tus.f.bdeSize = sizeof(struct fcp_cmnd); 323 bpl[0].tus.f.bdeFlags = BUFF_TYPE_BDE_64; 324 bpl[0].tus.w = le32_to_cpu(bpl[0].tus.w); 325 326 /* Setup the physical region for the FCP RSP */ 327 bpl[1].addrHigh = le32_to_cpu(putPaddrHigh(pdma_phys_fcp_rsp)); 328 bpl[1].addrLow = le32_to_cpu(putPaddrLow(pdma_phys_fcp_rsp)); 329 bpl[1].tus.f.bdeSize = sizeof(struct fcp_rsp); 330 bpl[1].tus.f.bdeFlags = BUFF_TYPE_BDE_64; 331 bpl[1].tus.w = le32_to_cpu(bpl[1].tus.w); 332 333 /* 334 * Since the IOCB for the FCP I/O is built into this 335 * lpfc_scsi_buf, initialize it with all known data now. 336 */ 337 iocb = &psb->cur_iocbq.iocb; 338 iocb->un.fcpi64.bdl.ulpIoTag32 = 0; 339 if ((phba->sli_rev == 3) && 340 !(phba->sli3_options & LPFC_SLI3_BG_ENABLED)) { 341 /* fill in immediate fcp command BDE */ 342 iocb->un.fcpi64.bdl.bdeFlags = BUFF_TYPE_BDE_IMMED; 343 iocb->un.fcpi64.bdl.bdeSize = sizeof(struct fcp_cmnd); 344 iocb->un.fcpi64.bdl.addrLow = offsetof(IOCB_t, 345 unsli3.fcp_ext.icd); 346 iocb->un.fcpi64.bdl.addrHigh = 0; 347 iocb->ulpBdeCount = 0; 348 iocb->ulpLe = 0; 349 /* fill in response BDE */ 350 iocb->unsli3.fcp_ext.rbde.tus.f.bdeFlags = 351 BUFF_TYPE_BDE_64; 352 iocb->unsli3.fcp_ext.rbde.tus.f.bdeSize = 353 sizeof(struct fcp_rsp); 354 iocb->unsli3.fcp_ext.rbde.addrLow = 355 putPaddrLow(pdma_phys_fcp_rsp); 356 iocb->unsli3.fcp_ext.rbde.addrHigh = 357 putPaddrHigh(pdma_phys_fcp_rsp); 358 } else { 359 iocb->un.fcpi64.bdl.bdeFlags = BUFF_TYPE_BLP_64; 360 iocb->un.fcpi64.bdl.bdeSize = 361 (2 * sizeof(struct ulp_bde64)); 362 iocb->un.fcpi64.bdl.addrLow = 363 putPaddrLow(pdma_phys_sgl); 364 iocb->un.fcpi64.bdl.addrHigh = 365 putPaddrHigh(pdma_phys_sgl); 366 iocb->ulpBdeCount = 1; 367 iocb->ulpLe = 1; 368 } 369 iocb->ulpClass = CLASS3; 370 psb->status = IOSTAT_SUCCESS; 371 /* Put it back into the SCSI buffer list */ 372 psb->cur_iocbq.io_buf = psb; 373 spin_lock_init(&psb->buf_lock); 374 lpfc_release_scsi_buf_s3(phba, psb); 375 376 } 377 378 return bcnt; 379 } 380 381 /** 382 * lpfc_sli4_vport_delete_fcp_xri_aborted -Remove all ndlp references for vport 383 * @vport: pointer to lpfc vport data structure. 384 * 385 * This routine is invoked by the vport cleanup for deletions and the cleanup 386 * for an ndlp on removal. 387 **/ 388 void 389 lpfc_sli4_vport_delete_fcp_xri_aborted(struct lpfc_vport *vport) 390 { 391 struct lpfc_hba *phba = vport->phba; 392 struct lpfc_io_buf *psb, *next_psb; 393 struct lpfc_sli4_hdw_queue *qp; 394 unsigned long iflag = 0; 395 int idx; 396 397 if (!(vport->cfg_enable_fc4_type & LPFC_ENABLE_FCP)) 398 return; 399 400 spin_lock_irqsave(&phba->hbalock, iflag); 401 for (idx = 0; idx < phba->cfg_hdw_queue; idx++) { 402 qp = &phba->sli4_hba.hdwq[idx]; 403 404 spin_lock(&qp->abts_io_buf_list_lock); 405 list_for_each_entry_safe(psb, next_psb, 406 &qp->lpfc_abts_io_buf_list, list) { 407 if (psb->cur_iocbq.cmd_flag & LPFC_IO_NVME) 408 continue; 409 410 if (psb->rdata && psb->rdata->pnode && 411 psb->rdata->pnode->vport == vport) 412 psb->rdata = NULL; 413 } 414 spin_unlock(&qp->abts_io_buf_list_lock); 415 } 416 spin_unlock_irqrestore(&phba->hbalock, iflag); 417 } 418 419 /** 420 * lpfc_sli4_io_xri_aborted - Fast-path process of fcp xri abort 421 * @phba: pointer to lpfc hba data structure. 422 * @axri: pointer to the fcp xri abort wcqe structure. 423 * @idx: index into hdwq 424 * 425 * This routine is invoked by the worker thread to process a SLI4 fast-path 426 * FCP or NVME aborted xri. 427 **/ 428 void 429 lpfc_sli4_io_xri_aborted(struct lpfc_hba *phba, 430 struct sli4_wcqe_xri_aborted *axri, int idx) 431 { 432 u16 xri = 0; 433 u16 rxid = 0; 434 struct lpfc_io_buf *psb, *next_psb; 435 struct lpfc_sli4_hdw_queue *qp; 436 unsigned long iflag = 0; 437 struct lpfc_iocbq *iocbq; 438 int i; 439 struct lpfc_nodelist *ndlp; 440 int rrq_empty = 0; 441 struct lpfc_sli_ring *pring = phba->sli4_hba.els_wq->pring; 442 struct scsi_cmnd *cmd; 443 int offline = 0; 444 445 if (!(phba->cfg_enable_fc4_type & LPFC_ENABLE_FCP)) 446 return; 447 offline = pci_channel_offline(phba->pcidev); 448 if (!offline) { 449 xri = bf_get(lpfc_wcqe_xa_xri, axri); 450 rxid = bf_get(lpfc_wcqe_xa_remote_xid, axri); 451 } 452 qp = &phba->sli4_hba.hdwq[idx]; 453 spin_lock_irqsave(&phba->hbalock, iflag); 454 spin_lock(&qp->abts_io_buf_list_lock); 455 list_for_each_entry_safe(psb, next_psb, 456 &qp->lpfc_abts_io_buf_list, list) { 457 if (offline) 458 xri = psb->cur_iocbq.sli4_xritag; 459 if (psb->cur_iocbq.sli4_xritag == xri) { 460 list_del_init(&psb->list); 461 psb->flags &= ~LPFC_SBUF_XBUSY; 462 psb->status = IOSTAT_SUCCESS; 463 if (psb->cur_iocbq.cmd_flag & LPFC_IO_NVME) { 464 qp->abts_nvme_io_bufs--; 465 spin_unlock(&qp->abts_io_buf_list_lock); 466 spin_unlock_irqrestore(&phba->hbalock, iflag); 467 if (!offline) { 468 lpfc_sli4_nvme_xri_aborted(phba, axri, 469 psb); 470 return; 471 } 472 lpfc_sli4_nvme_pci_offline_aborted(phba, psb); 473 spin_lock_irqsave(&phba->hbalock, iflag); 474 spin_lock(&qp->abts_io_buf_list_lock); 475 continue; 476 } 477 qp->abts_scsi_io_bufs--; 478 spin_unlock(&qp->abts_io_buf_list_lock); 479 480 if (psb->rdata && psb->rdata->pnode) 481 ndlp = psb->rdata->pnode; 482 else 483 ndlp = NULL; 484 485 rrq_empty = list_empty(&phba->active_rrq_list); 486 spin_unlock_irqrestore(&phba->hbalock, iflag); 487 if (ndlp && !offline) { 488 lpfc_set_rrq_active(phba, ndlp, 489 psb->cur_iocbq.sli4_lxritag, rxid, 1); 490 lpfc_sli4_abts_err_handler(phba, ndlp, axri); 491 } 492 493 if (phba->cfg_fcp_wait_abts_rsp || offline) { 494 spin_lock_irqsave(&psb->buf_lock, iflag); 495 cmd = psb->pCmd; 496 psb->pCmd = NULL; 497 spin_unlock_irqrestore(&psb->buf_lock, iflag); 498 499 /* The sdev is not guaranteed to be valid post 500 * scsi_done upcall. 501 */ 502 if (cmd) 503 scsi_done(cmd); 504 505 /* 506 * We expect there is an abort thread waiting 507 * for command completion wake up the thread. 508 */ 509 spin_lock_irqsave(&psb->buf_lock, iflag); 510 psb->cur_iocbq.cmd_flag &= 511 ~LPFC_DRIVER_ABORTED; 512 if (psb->waitq) 513 wake_up(psb->waitq); 514 spin_unlock_irqrestore(&psb->buf_lock, iflag); 515 } 516 517 lpfc_release_scsi_buf_s4(phba, psb); 518 if (rrq_empty) 519 lpfc_worker_wake_up(phba); 520 if (!offline) 521 return; 522 spin_lock_irqsave(&phba->hbalock, iflag); 523 spin_lock(&qp->abts_io_buf_list_lock); 524 continue; 525 } 526 } 527 spin_unlock(&qp->abts_io_buf_list_lock); 528 if (!offline) { 529 for (i = 1; i <= phba->sli.last_iotag; i++) { 530 iocbq = phba->sli.iocbq_lookup[i]; 531 532 if (!(iocbq->cmd_flag & LPFC_IO_FCP) || 533 (iocbq->cmd_flag & LPFC_IO_LIBDFC)) 534 continue; 535 if (iocbq->sli4_xritag != xri) 536 continue; 537 psb = container_of(iocbq, struct lpfc_io_buf, cur_iocbq); 538 psb->flags &= ~LPFC_SBUF_XBUSY; 539 spin_unlock_irqrestore(&phba->hbalock, iflag); 540 if (!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 **/ 561 static struct lpfc_io_buf * 562 lpfc_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 **/ 602 static struct lpfc_io_buf * 603 lpfc_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 *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 *)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 sgl->word2 = le32_to_cpu(sgl->word2); 664 bf_set(lpfc_sli4_sge_last, sgl, 0); 665 sgl->word2 = cpu_to_le32(sgl->word2); 666 sgl->sge_len = cpu_to_le32(sizeof(struct fcp_cmnd)); 667 sgl++; 668 669 /* Setup the physical region for the FCP RSP */ 670 pdma_phys_fcp_rsp = pdma_phys_fcp_cmd + sizeof(struct fcp_cmnd); 671 sgl->addr_hi = cpu_to_le32(putPaddrHigh(pdma_phys_fcp_rsp)); 672 sgl->addr_lo = cpu_to_le32(putPaddrLow(pdma_phys_fcp_rsp)); 673 sgl->word2 = le32_to_cpu(sgl->word2); 674 bf_set(lpfc_sli4_sge_last, sgl, 1); 675 sgl->word2 = cpu_to_le32(sgl->word2); 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 **/ 697 static struct lpfc_io_buf* 698 lpfc_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 **/ 712 static void 713 lpfc_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 **/ 737 static void 738 lpfc_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 **/ 767 static void 768 lpfc_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 **/ 785 static void 786 lpfc_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 **/ 810 static int 811 lpfc_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 **/ 960 static int 961 lpfc_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 if (lba == LPFC_INVALID_REFTAG) 982 return 0; 983 984 /* First check if we need to match the LBA */ 985 if (phba->lpfc_injerr_lba != LPFC_INJERR_LBA_OFF) { 986 blksize = scsi_prot_interval(sc); 987 numblks = (scsi_bufflen(sc) + blksize - 1) / blksize; 988 989 /* Make sure we have the right LBA if one is specified */ 990 if (phba->lpfc_injerr_lba < (u64)lba || 991 (phba->lpfc_injerr_lba >= (u64)(lba + numblks))) 992 return 0; 993 if (sgpe) { 994 blockoff = phba->lpfc_injerr_lba - (u64)lba; 995 numblks = sg_dma_len(sgpe) / 996 sizeof(struct scsi_dif_tuple); 997 if (numblks < blockoff) 998 blockoff = numblks; 999 } 1000 } 1001 1002 /* Next check if we need to match the remote NPortID or WWPN */ 1003 rdata = lpfc_rport_data_from_scsi_device(sc->device); 1004 if (rdata && rdata->pnode) { 1005 ndlp = rdata->pnode; 1006 1007 /* Make sure we have the right NPortID if one is specified */ 1008 if (phba->lpfc_injerr_nportid && 1009 (phba->lpfc_injerr_nportid != ndlp->nlp_DID)) 1010 return 0; 1011 1012 /* 1013 * Make sure we have the right WWPN if one is specified. 1014 * wwn[0] should be a non-zero NAA in a good WWPN. 1015 */ 1016 if (phba->lpfc_injerr_wwpn.u.wwn[0] && 1017 (memcmp(&ndlp->nlp_portname, &phba->lpfc_injerr_wwpn, 1018 sizeof(struct lpfc_name)) != 0)) 1019 return 0; 1020 } 1021 1022 /* Setup a ptr to the protection data if the SCSI host provides it */ 1023 if (sgpe) { 1024 src = (struct scsi_dif_tuple *)sg_virt(sgpe); 1025 src += blockoff; 1026 lpfc_cmd = (struct lpfc_io_buf *)sc->host_scribble; 1027 } 1028 1029 /* Should we change the Reference Tag */ 1030 if (reftag) { 1031 if (phba->lpfc_injerr_wref_cnt) { 1032 switch (op) { 1033 case SCSI_PROT_WRITE_PASS: 1034 if (src) { 1035 /* 1036 * For WRITE_PASS, force the error 1037 * to be sent on the wire. It should 1038 * be detected by the Target. 1039 * If blockoff != 0 error will be 1040 * inserted in middle of the IO. 1041 */ 1042 1043 lpfc_printf_log(phba, KERN_ERR, 1044 LOG_TRACE_EVENT, 1045 "9076 BLKGRD: Injecting reftag error: " 1046 "write lba x%lx + x%x oldrefTag x%x\n", 1047 (unsigned long)lba, blockoff, 1048 be32_to_cpu(src->ref_tag)); 1049 1050 /* 1051 * Save the old ref_tag so we can 1052 * restore it on completion. 1053 */ 1054 if (lpfc_cmd) { 1055 lpfc_cmd->prot_data_type = 1056 LPFC_INJERR_REFTAG; 1057 lpfc_cmd->prot_data_segment = 1058 src; 1059 lpfc_cmd->prot_data = 1060 src->ref_tag; 1061 } 1062 src->ref_tag = cpu_to_be32(0xDEADBEEF); 1063 phba->lpfc_injerr_wref_cnt--; 1064 if (phba->lpfc_injerr_wref_cnt == 0) { 1065 phba->lpfc_injerr_nportid = 0; 1066 phba->lpfc_injerr_lba = 1067 LPFC_INJERR_LBA_OFF; 1068 memset(&phba->lpfc_injerr_wwpn, 1069 0, sizeof(struct lpfc_name)); 1070 } 1071 rc = BG_ERR_TGT | BG_ERR_CHECK; 1072 1073 break; 1074 } 1075 fallthrough; 1076 case SCSI_PROT_WRITE_INSERT: 1077 /* 1078 * For WRITE_INSERT, force the error 1079 * to be sent on the wire. It should be 1080 * detected by the Target. 1081 */ 1082 /* DEADBEEF will be the reftag on the wire */ 1083 *reftag = 0xDEADBEEF; 1084 phba->lpfc_injerr_wref_cnt--; 1085 if (phba->lpfc_injerr_wref_cnt == 0) { 1086 phba->lpfc_injerr_nportid = 0; 1087 phba->lpfc_injerr_lba = 1088 LPFC_INJERR_LBA_OFF; 1089 memset(&phba->lpfc_injerr_wwpn, 1090 0, sizeof(struct lpfc_name)); 1091 } 1092 rc = BG_ERR_TGT | BG_ERR_CHECK; 1093 1094 lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT, 1095 "9078 BLKGRD: Injecting reftag error: " 1096 "write lba x%lx\n", (unsigned long)lba); 1097 break; 1098 case SCSI_PROT_WRITE_STRIP: 1099 /* 1100 * For WRITE_STRIP and WRITE_PASS, 1101 * force the error on data 1102 * being copied from SLI-Host to SLI-Port. 1103 */ 1104 *reftag = 0xDEADBEEF; 1105 phba->lpfc_injerr_wref_cnt--; 1106 if (phba->lpfc_injerr_wref_cnt == 0) { 1107 phba->lpfc_injerr_nportid = 0; 1108 phba->lpfc_injerr_lba = 1109 LPFC_INJERR_LBA_OFF; 1110 memset(&phba->lpfc_injerr_wwpn, 1111 0, sizeof(struct lpfc_name)); 1112 } 1113 rc = BG_ERR_INIT; 1114 1115 lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT, 1116 "9077 BLKGRD: Injecting reftag error: " 1117 "write lba x%lx\n", (unsigned long)lba); 1118 break; 1119 } 1120 } 1121 if (phba->lpfc_injerr_rref_cnt) { 1122 switch (op) { 1123 case SCSI_PROT_READ_INSERT: 1124 case SCSI_PROT_READ_STRIP: 1125 case SCSI_PROT_READ_PASS: 1126 /* 1127 * For READ_STRIP and READ_PASS, force the 1128 * error on data being read off the wire. It 1129 * should force an IO error to the driver. 1130 */ 1131 *reftag = 0xDEADBEEF; 1132 phba->lpfc_injerr_rref_cnt--; 1133 if (phba->lpfc_injerr_rref_cnt == 0) { 1134 phba->lpfc_injerr_nportid = 0; 1135 phba->lpfc_injerr_lba = 1136 LPFC_INJERR_LBA_OFF; 1137 memset(&phba->lpfc_injerr_wwpn, 1138 0, sizeof(struct lpfc_name)); 1139 } 1140 rc = BG_ERR_INIT; 1141 1142 lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT, 1143 "9079 BLKGRD: Injecting reftag error: " 1144 "read lba x%lx\n", (unsigned long)lba); 1145 break; 1146 } 1147 } 1148 } 1149 1150 /* Should we change the Application Tag */ 1151 if (apptag) { 1152 if (phba->lpfc_injerr_wapp_cnt) { 1153 switch (op) { 1154 case SCSI_PROT_WRITE_PASS: 1155 if (src) { 1156 /* 1157 * For WRITE_PASS, force the error 1158 * to be sent on the wire. It should 1159 * be detected by the Target. 1160 * If blockoff != 0 error will be 1161 * inserted in middle of the IO. 1162 */ 1163 1164 lpfc_printf_log(phba, KERN_ERR, 1165 LOG_TRACE_EVENT, 1166 "9080 BLKGRD: Injecting apptag error: " 1167 "write lba x%lx + x%x oldappTag x%x\n", 1168 (unsigned long)lba, blockoff, 1169 be16_to_cpu(src->app_tag)); 1170 1171 /* 1172 * Save the old app_tag so we can 1173 * restore it on completion. 1174 */ 1175 if (lpfc_cmd) { 1176 lpfc_cmd->prot_data_type = 1177 LPFC_INJERR_APPTAG; 1178 lpfc_cmd->prot_data_segment = 1179 src; 1180 lpfc_cmd->prot_data = 1181 src->app_tag; 1182 } 1183 src->app_tag = cpu_to_be16(0xDEAD); 1184 phba->lpfc_injerr_wapp_cnt--; 1185 if (phba->lpfc_injerr_wapp_cnt == 0) { 1186 phba->lpfc_injerr_nportid = 0; 1187 phba->lpfc_injerr_lba = 1188 LPFC_INJERR_LBA_OFF; 1189 memset(&phba->lpfc_injerr_wwpn, 1190 0, sizeof(struct lpfc_name)); 1191 } 1192 rc = BG_ERR_TGT | BG_ERR_CHECK; 1193 break; 1194 } 1195 fallthrough; 1196 case SCSI_PROT_WRITE_INSERT: 1197 /* 1198 * For WRITE_INSERT, force the 1199 * error to be sent on the wire. It should be 1200 * detected by the Target. 1201 */ 1202 /* DEAD will be the apptag on the wire */ 1203 *apptag = 0xDEAD; 1204 phba->lpfc_injerr_wapp_cnt--; 1205 if (phba->lpfc_injerr_wapp_cnt == 0) { 1206 phba->lpfc_injerr_nportid = 0; 1207 phba->lpfc_injerr_lba = 1208 LPFC_INJERR_LBA_OFF; 1209 memset(&phba->lpfc_injerr_wwpn, 1210 0, sizeof(struct lpfc_name)); 1211 } 1212 rc = BG_ERR_TGT | BG_ERR_CHECK; 1213 1214 lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT, 1215 "0813 BLKGRD: Injecting apptag error: " 1216 "write lba x%lx\n", (unsigned long)lba); 1217 break; 1218 case SCSI_PROT_WRITE_STRIP: 1219 /* 1220 * For WRITE_STRIP and WRITE_PASS, 1221 * force the error on data 1222 * being copied from SLI-Host to SLI-Port. 1223 */ 1224 *apptag = 0xDEAD; 1225 phba->lpfc_injerr_wapp_cnt--; 1226 if (phba->lpfc_injerr_wapp_cnt == 0) { 1227 phba->lpfc_injerr_nportid = 0; 1228 phba->lpfc_injerr_lba = 1229 LPFC_INJERR_LBA_OFF; 1230 memset(&phba->lpfc_injerr_wwpn, 1231 0, sizeof(struct lpfc_name)); 1232 } 1233 rc = BG_ERR_INIT; 1234 1235 lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT, 1236 "0812 BLKGRD: Injecting apptag error: " 1237 "write lba x%lx\n", (unsigned long)lba); 1238 break; 1239 } 1240 } 1241 if (phba->lpfc_injerr_rapp_cnt) { 1242 switch (op) { 1243 case SCSI_PROT_READ_INSERT: 1244 case SCSI_PROT_READ_STRIP: 1245 case SCSI_PROT_READ_PASS: 1246 /* 1247 * For READ_STRIP and READ_PASS, force the 1248 * error on data being read off the wire. It 1249 * should force an IO error to the driver. 1250 */ 1251 *apptag = 0xDEAD; 1252 phba->lpfc_injerr_rapp_cnt--; 1253 if (phba->lpfc_injerr_rapp_cnt == 0) { 1254 phba->lpfc_injerr_nportid = 0; 1255 phba->lpfc_injerr_lba = 1256 LPFC_INJERR_LBA_OFF; 1257 memset(&phba->lpfc_injerr_wwpn, 1258 0, sizeof(struct lpfc_name)); 1259 } 1260 rc = BG_ERR_INIT; 1261 1262 lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT, 1263 "0814 BLKGRD: Injecting apptag error: " 1264 "read lba x%lx\n", (unsigned long)lba); 1265 break; 1266 } 1267 } 1268 } 1269 1270 1271 /* Should we change the Guard Tag */ 1272 if (new_guard) { 1273 if (phba->lpfc_injerr_wgrd_cnt) { 1274 switch (op) { 1275 case SCSI_PROT_WRITE_PASS: 1276 rc = BG_ERR_CHECK; 1277 fallthrough; 1278 1279 case SCSI_PROT_WRITE_INSERT: 1280 /* 1281 * For WRITE_INSERT, force the 1282 * error to be sent on the wire. It should be 1283 * detected by the Target. 1284 */ 1285 phba->lpfc_injerr_wgrd_cnt--; 1286 if (phba->lpfc_injerr_wgrd_cnt == 0) { 1287 phba->lpfc_injerr_nportid = 0; 1288 phba->lpfc_injerr_lba = 1289 LPFC_INJERR_LBA_OFF; 1290 memset(&phba->lpfc_injerr_wwpn, 1291 0, sizeof(struct lpfc_name)); 1292 } 1293 1294 rc |= BG_ERR_TGT | BG_ERR_SWAP; 1295 /* Signals the caller to swap CRC->CSUM */ 1296 1297 lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT, 1298 "0817 BLKGRD: Injecting guard error: " 1299 "write lba x%lx\n", (unsigned long)lba); 1300 break; 1301 case SCSI_PROT_WRITE_STRIP: 1302 /* 1303 * For WRITE_STRIP and WRITE_PASS, 1304 * force the error on data 1305 * being copied from SLI-Host to SLI-Port. 1306 */ 1307 phba->lpfc_injerr_wgrd_cnt--; 1308 if (phba->lpfc_injerr_wgrd_cnt == 0) { 1309 phba->lpfc_injerr_nportid = 0; 1310 phba->lpfc_injerr_lba = 1311 LPFC_INJERR_LBA_OFF; 1312 memset(&phba->lpfc_injerr_wwpn, 1313 0, sizeof(struct lpfc_name)); 1314 } 1315 1316 rc = BG_ERR_INIT | BG_ERR_SWAP; 1317 /* Signals the caller to swap CRC->CSUM */ 1318 1319 lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT, 1320 "0816 BLKGRD: Injecting guard error: " 1321 "write lba x%lx\n", (unsigned long)lba); 1322 break; 1323 } 1324 } 1325 if (phba->lpfc_injerr_rgrd_cnt) { 1326 switch (op) { 1327 case SCSI_PROT_READ_INSERT: 1328 case SCSI_PROT_READ_STRIP: 1329 case SCSI_PROT_READ_PASS: 1330 /* 1331 * For READ_STRIP and READ_PASS, force the 1332 * error on data being read off the wire. It 1333 * should force an IO error to the driver. 1334 */ 1335 phba->lpfc_injerr_rgrd_cnt--; 1336 if (phba->lpfc_injerr_rgrd_cnt == 0) { 1337 phba->lpfc_injerr_nportid = 0; 1338 phba->lpfc_injerr_lba = 1339 LPFC_INJERR_LBA_OFF; 1340 memset(&phba->lpfc_injerr_wwpn, 1341 0, sizeof(struct lpfc_name)); 1342 } 1343 1344 rc = BG_ERR_INIT | BG_ERR_SWAP; 1345 /* Signals the caller to swap CRC->CSUM */ 1346 1347 lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT, 1348 "0818 BLKGRD: Injecting guard error: " 1349 "read lba x%lx\n", (unsigned long)lba); 1350 } 1351 } 1352 } 1353 1354 return rc; 1355 } 1356 #endif 1357 1358 /** 1359 * lpfc_sc_to_bg_opcodes - Determine the BlockGuard opcodes to be used with 1360 * the specified SCSI command. 1361 * @phba: The Hba for which this call is being executed. 1362 * @sc: The SCSI command to examine 1363 * @txop: (out) BlockGuard operation for transmitted data 1364 * @rxop: (out) BlockGuard operation for received data 1365 * 1366 * Returns: zero on success; non-zero if tx and/or rx op cannot be determined 1367 * 1368 **/ 1369 static int 1370 lpfc_sc_to_bg_opcodes(struct lpfc_hba *phba, struct scsi_cmnd *sc, 1371 uint8_t *txop, uint8_t *rxop) 1372 { 1373 uint8_t ret = 0; 1374 1375 if (sc->prot_flags & SCSI_PROT_IP_CHECKSUM) { 1376 switch (scsi_get_prot_op(sc)) { 1377 case SCSI_PROT_READ_INSERT: 1378 case SCSI_PROT_WRITE_STRIP: 1379 *rxop = BG_OP_IN_NODIF_OUT_CSUM; 1380 *txop = BG_OP_IN_CSUM_OUT_NODIF; 1381 break; 1382 1383 case SCSI_PROT_READ_STRIP: 1384 case SCSI_PROT_WRITE_INSERT: 1385 *rxop = BG_OP_IN_CRC_OUT_NODIF; 1386 *txop = BG_OP_IN_NODIF_OUT_CRC; 1387 break; 1388 1389 case SCSI_PROT_READ_PASS: 1390 case SCSI_PROT_WRITE_PASS: 1391 *rxop = BG_OP_IN_CRC_OUT_CSUM; 1392 *txop = BG_OP_IN_CSUM_OUT_CRC; 1393 break; 1394 1395 case SCSI_PROT_NORMAL: 1396 default: 1397 lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT, 1398 "9063 BLKGRD: Bad op/guard:%d/IP combination\n", 1399 scsi_get_prot_op(sc)); 1400 ret = 1; 1401 break; 1402 1403 } 1404 } else { 1405 switch (scsi_get_prot_op(sc)) { 1406 case SCSI_PROT_READ_STRIP: 1407 case SCSI_PROT_WRITE_INSERT: 1408 *rxop = BG_OP_IN_CRC_OUT_NODIF; 1409 *txop = BG_OP_IN_NODIF_OUT_CRC; 1410 break; 1411 1412 case SCSI_PROT_READ_PASS: 1413 case SCSI_PROT_WRITE_PASS: 1414 *rxop = BG_OP_IN_CRC_OUT_CRC; 1415 *txop = BG_OP_IN_CRC_OUT_CRC; 1416 break; 1417 1418 case SCSI_PROT_READ_INSERT: 1419 case SCSI_PROT_WRITE_STRIP: 1420 *rxop = BG_OP_IN_NODIF_OUT_CRC; 1421 *txop = BG_OP_IN_CRC_OUT_NODIF; 1422 break; 1423 1424 case SCSI_PROT_NORMAL: 1425 default: 1426 lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT, 1427 "9075 BLKGRD: Bad op/guard:%d/CRC combination\n", 1428 scsi_get_prot_op(sc)); 1429 ret = 1; 1430 break; 1431 } 1432 } 1433 1434 return ret; 1435 } 1436 1437 #ifdef CONFIG_SCSI_LPFC_DEBUG_FS 1438 /** 1439 * lpfc_bg_err_opcodes - reDetermine the BlockGuard opcodes to be used with 1440 * the specified SCSI command in order to force a guard tag error. 1441 * @phba: The Hba for which this call is being executed. 1442 * @sc: The SCSI command to examine 1443 * @txop: (out) BlockGuard operation for transmitted data 1444 * @rxop: (out) BlockGuard operation for received data 1445 * 1446 * Returns: zero on success; non-zero if tx and/or rx op cannot be determined 1447 * 1448 **/ 1449 static int 1450 lpfc_bg_err_opcodes(struct lpfc_hba *phba, struct scsi_cmnd *sc, 1451 uint8_t *txop, uint8_t *rxop) 1452 { 1453 1454 if (sc->prot_flags & SCSI_PROT_IP_CHECKSUM) { 1455 switch (scsi_get_prot_op(sc)) { 1456 case SCSI_PROT_READ_INSERT: 1457 case SCSI_PROT_WRITE_STRIP: 1458 *rxop = BG_OP_IN_NODIF_OUT_CRC; 1459 *txop = BG_OP_IN_CRC_OUT_NODIF; 1460 break; 1461 1462 case SCSI_PROT_READ_STRIP: 1463 case SCSI_PROT_WRITE_INSERT: 1464 *rxop = BG_OP_IN_CSUM_OUT_NODIF; 1465 *txop = BG_OP_IN_NODIF_OUT_CSUM; 1466 break; 1467 1468 case SCSI_PROT_READ_PASS: 1469 case SCSI_PROT_WRITE_PASS: 1470 *rxop = BG_OP_IN_CSUM_OUT_CRC; 1471 *txop = BG_OP_IN_CRC_OUT_CSUM; 1472 break; 1473 1474 case SCSI_PROT_NORMAL: 1475 default: 1476 break; 1477 1478 } 1479 } else { 1480 switch (scsi_get_prot_op(sc)) { 1481 case SCSI_PROT_READ_STRIP: 1482 case SCSI_PROT_WRITE_INSERT: 1483 *rxop = BG_OP_IN_CSUM_OUT_NODIF; 1484 *txop = BG_OP_IN_NODIF_OUT_CSUM; 1485 break; 1486 1487 case SCSI_PROT_READ_PASS: 1488 case SCSI_PROT_WRITE_PASS: 1489 *rxop = BG_OP_IN_CSUM_OUT_CSUM; 1490 *txop = BG_OP_IN_CSUM_OUT_CSUM; 1491 break; 1492 1493 case SCSI_PROT_READ_INSERT: 1494 case SCSI_PROT_WRITE_STRIP: 1495 *rxop = BG_OP_IN_NODIF_OUT_CSUM; 1496 *txop = BG_OP_IN_CSUM_OUT_NODIF; 1497 break; 1498 1499 case SCSI_PROT_NORMAL: 1500 default: 1501 break; 1502 } 1503 } 1504 1505 return 0; 1506 } 1507 #endif 1508 1509 /** 1510 * lpfc_bg_setup_bpl - Setup BlockGuard BPL with no protection data 1511 * @phba: The Hba for which this call is being executed. 1512 * @sc: pointer to scsi command we're working on 1513 * @bpl: pointer to buffer list for protection groups 1514 * @datasegcnt: number of segments of data that have been dma mapped 1515 * 1516 * This function sets up BPL buffer list for protection groups of 1517 * type LPFC_PG_TYPE_NO_DIF 1518 * 1519 * This is usually used when the HBA is instructed to generate 1520 * DIFs and insert them into data stream (or strip DIF from 1521 * incoming data stream) 1522 * 1523 * The buffer list consists of just one protection group described 1524 * below: 1525 * +-------------------------+ 1526 * start of prot group --> | PDE_5 | 1527 * +-------------------------+ 1528 * | PDE_6 | 1529 * +-------------------------+ 1530 * | Data BDE | 1531 * +-------------------------+ 1532 * |more Data BDE's ... (opt)| 1533 * +-------------------------+ 1534 * 1535 * 1536 * Note: Data s/g buffers have been dma mapped 1537 * 1538 * Returns the number of BDEs added to the BPL. 1539 **/ 1540 static int 1541 lpfc_bg_setup_bpl(struct lpfc_hba *phba, struct scsi_cmnd *sc, 1542 struct ulp_bde64 *bpl, int datasegcnt) 1543 { 1544 struct scatterlist *sgde = NULL; /* s/g data entry */ 1545 struct lpfc_pde5 *pde5 = NULL; 1546 struct lpfc_pde6 *pde6 = NULL; 1547 dma_addr_t physaddr; 1548 int i = 0, num_bde = 0, status; 1549 int datadir = sc->sc_data_direction; 1550 #ifdef CONFIG_SCSI_LPFC_DEBUG_FS 1551 uint32_t rc; 1552 #endif 1553 uint32_t checking = 1; 1554 uint32_t reftag; 1555 uint8_t txop, rxop; 1556 1557 status = lpfc_sc_to_bg_opcodes(phba, sc, &txop, &rxop); 1558 if (status) 1559 goto out; 1560 1561 /* extract some info from the scsi command for pde*/ 1562 reftag = scsi_prot_ref_tag(sc); 1563 if (reftag == LPFC_INVALID_REFTAG) 1564 goto out; 1565 1566 #ifdef CONFIG_SCSI_LPFC_DEBUG_FS 1567 rc = lpfc_bg_err_inject(phba, sc, &reftag, NULL, 1); 1568 if (rc) { 1569 if (rc & BG_ERR_SWAP) 1570 lpfc_bg_err_opcodes(phba, sc, &txop, &rxop); 1571 if (rc & BG_ERR_CHECK) 1572 checking = 0; 1573 } 1574 #endif 1575 1576 /* setup PDE5 with what we have */ 1577 pde5 = (struct lpfc_pde5 *) bpl; 1578 memset(pde5, 0, sizeof(struct lpfc_pde5)); 1579 bf_set(pde5_type, pde5, LPFC_PDE5_DESCRIPTOR); 1580 1581 /* Endianness conversion if necessary for PDE5 */ 1582 pde5->word0 = cpu_to_le32(pde5->word0); 1583 pde5->reftag = cpu_to_le32(reftag); 1584 1585 /* advance bpl and increment bde count */ 1586 num_bde++; 1587 bpl++; 1588 pde6 = (struct lpfc_pde6 *) bpl; 1589 1590 /* setup PDE6 with the rest of the info */ 1591 memset(pde6, 0, sizeof(struct lpfc_pde6)); 1592 bf_set(pde6_type, pde6, LPFC_PDE6_DESCRIPTOR); 1593 bf_set(pde6_optx, pde6, txop); 1594 bf_set(pde6_oprx, pde6, rxop); 1595 1596 /* 1597 * We only need to check the data on READs, for WRITEs 1598 * protection data is automatically generated, not checked. 1599 */ 1600 if (datadir == DMA_FROM_DEVICE) { 1601 if (sc->prot_flags & SCSI_PROT_GUARD_CHECK) 1602 bf_set(pde6_ce, pde6, checking); 1603 else 1604 bf_set(pde6_ce, pde6, 0); 1605 1606 if (sc->prot_flags & SCSI_PROT_REF_CHECK) 1607 bf_set(pde6_re, pde6, checking); 1608 else 1609 bf_set(pde6_re, pde6, 0); 1610 } 1611 bf_set(pde6_ai, pde6, 1); 1612 bf_set(pde6_ae, pde6, 0); 1613 bf_set(pde6_apptagval, pde6, 0); 1614 1615 /* Endianness conversion if necessary for PDE6 */ 1616 pde6->word0 = cpu_to_le32(pde6->word0); 1617 pde6->word1 = cpu_to_le32(pde6->word1); 1618 pde6->word2 = cpu_to_le32(pde6->word2); 1619 1620 /* advance bpl and increment bde count */ 1621 num_bde++; 1622 bpl++; 1623 1624 /* assumption: caller has already run dma_map_sg on command data */ 1625 scsi_for_each_sg(sc, sgde, datasegcnt, i) { 1626 physaddr = sg_dma_address(sgde); 1627 bpl->addrLow = le32_to_cpu(putPaddrLow(physaddr)); 1628 bpl->addrHigh = le32_to_cpu(putPaddrHigh(physaddr)); 1629 bpl->tus.f.bdeSize = sg_dma_len(sgde); 1630 if (datadir == DMA_TO_DEVICE) 1631 bpl->tus.f.bdeFlags = BUFF_TYPE_BDE_64; 1632 else 1633 bpl->tus.f.bdeFlags = BUFF_TYPE_BDE_64I; 1634 bpl->tus.w = le32_to_cpu(bpl->tus.w); 1635 bpl++; 1636 num_bde++; 1637 } 1638 1639 out: 1640 return num_bde; 1641 } 1642 1643 /** 1644 * lpfc_bg_setup_bpl_prot - Setup BlockGuard BPL with protection data 1645 * @phba: The Hba for which this call is being executed. 1646 * @sc: pointer to scsi command we're working on 1647 * @bpl: pointer to buffer list for protection groups 1648 * @datacnt: number of segments of data that have been dma mapped 1649 * @protcnt: number of segment of protection data that have been dma mapped 1650 * 1651 * This function sets up BPL buffer list for protection groups of 1652 * type LPFC_PG_TYPE_DIF 1653 * 1654 * This is usually used when DIFs are in their own buffers, 1655 * separate from the data. The HBA can then by instructed 1656 * to place the DIFs in the outgoing stream. For read operations, 1657 * The HBA could extract the DIFs and place it in DIF buffers. 1658 * 1659 * The buffer list for this type consists of one or more of the 1660 * protection groups described below: 1661 * +-------------------------+ 1662 * start of first prot group --> | PDE_5 | 1663 * +-------------------------+ 1664 * | PDE_6 | 1665 * +-------------------------+ 1666 * | PDE_7 (Prot BDE) | 1667 * +-------------------------+ 1668 * | Data BDE | 1669 * +-------------------------+ 1670 * |more Data BDE's ... (opt)| 1671 * +-------------------------+ 1672 * start of new prot group --> | PDE_5 | 1673 * +-------------------------+ 1674 * | ... | 1675 * +-------------------------+ 1676 * 1677 * Note: It is assumed that both data and protection s/g buffers have been 1678 * mapped for DMA 1679 * 1680 * Returns the number of BDEs added to the BPL. 1681 **/ 1682 static int 1683 lpfc_bg_setup_bpl_prot(struct lpfc_hba *phba, struct scsi_cmnd *sc, 1684 struct ulp_bde64 *bpl, int datacnt, int protcnt) 1685 { 1686 struct scatterlist *sgde = NULL; /* s/g data entry */ 1687 struct scatterlist *sgpe = NULL; /* s/g prot entry */ 1688 struct lpfc_pde5 *pde5 = NULL; 1689 struct lpfc_pde6 *pde6 = NULL; 1690 struct lpfc_pde7 *pde7 = NULL; 1691 dma_addr_t dataphysaddr, protphysaddr; 1692 unsigned short curr_prot = 0; 1693 unsigned int split_offset; 1694 unsigned int protgroup_len, protgroup_offset = 0, protgroup_remainder; 1695 unsigned int protgrp_blks, protgrp_bytes; 1696 unsigned int remainder, subtotal; 1697 int status; 1698 int datadir = sc->sc_data_direction; 1699 unsigned char pgdone = 0, alldone = 0; 1700 unsigned blksize; 1701 #ifdef CONFIG_SCSI_LPFC_DEBUG_FS 1702 uint32_t rc; 1703 #endif 1704 uint32_t checking = 1; 1705 uint32_t reftag; 1706 uint8_t txop, rxop; 1707 int num_bde = 0; 1708 1709 sgpe = scsi_prot_sglist(sc); 1710 sgde = scsi_sglist(sc); 1711 1712 if (!sgpe || !sgde) { 1713 lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT, 1714 "9020 Invalid s/g entry: data=x%px prot=x%px\n", 1715 sgpe, sgde); 1716 return 0; 1717 } 1718 1719 status = lpfc_sc_to_bg_opcodes(phba, sc, &txop, &rxop); 1720 if (status) 1721 goto out; 1722 1723 /* extract some info from the scsi command */ 1724 blksize = scsi_prot_interval(sc); 1725 reftag = scsi_prot_ref_tag(sc); 1726 if (reftag == LPFC_INVALID_REFTAG) 1727 goto out; 1728 1729 #ifdef CONFIG_SCSI_LPFC_DEBUG_FS 1730 rc = lpfc_bg_err_inject(phba, sc, &reftag, NULL, 1); 1731 if (rc) { 1732 if (rc & BG_ERR_SWAP) 1733 lpfc_bg_err_opcodes(phba, sc, &txop, &rxop); 1734 if (rc & BG_ERR_CHECK) 1735 checking = 0; 1736 } 1737 #endif 1738 1739 split_offset = 0; 1740 do { 1741 /* Check to see if we ran out of space */ 1742 if (num_bde >= (phba->cfg_total_seg_cnt - 2)) 1743 return num_bde + 3; 1744 1745 /* setup PDE5 with what we have */ 1746 pde5 = (struct lpfc_pde5 *) bpl; 1747 memset(pde5, 0, sizeof(struct lpfc_pde5)); 1748 bf_set(pde5_type, pde5, LPFC_PDE5_DESCRIPTOR); 1749 1750 /* Endianness conversion if necessary for PDE5 */ 1751 pde5->word0 = cpu_to_le32(pde5->word0); 1752 pde5->reftag = cpu_to_le32(reftag); 1753 1754 /* advance bpl and increment bde count */ 1755 num_bde++; 1756 bpl++; 1757 pde6 = (struct lpfc_pde6 *) bpl; 1758 1759 /* setup PDE6 with the rest of the info */ 1760 memset(pde6, 0, sizeof(struct lpfc_pde6)); 1761 bf_set(pde6_type, pde6, LPFC_PDE6_DESCRIPTOR); 1762 bf_set(pde6_optx, pde6, txop); 1763 bf_set(pde6_oprx, pde6, rxop); 1764 1765 if (sc->prot_flags & SCSI_PROT_GUARD_CHECK) 1766 bf_set(pde6_ce, pde6, checking); 1767 else 1768 bf_set(pde6_ce, pde6, 0); 1769 1770 if (sc->prot_flags & SCSI_PROT_REF_CHECK) 1771 bf_set(pde6_re, pde6, checking); 1772 else 1773 bf_set(pde6_re, pde6, 0); 1774 1775 bf_set(pde6_ai, pde6, 1); 1776 bf_set(pde6_ae, pde6, 0); 1777 bf_set(pde6_apptagval, pde6, 0); 1778 1779 /* Endianness conversion if necessary for PDE6 */ 1780 pde6->word0 = cpu_to_le32(pde6->word0); 1781 pde6->word1 = cpu_to_le32(pde6->word1); 1782 pde6->word2 = cpu_to_le32(pde6->word2); 1783 1784 /* advance bpl and increment bde count */ 1785 num_bde++; 1786 bpl++; 1787 1788 /* setup the first BDE that points to protection buffer */ 1789 protphysaddr = sg_dma_address(sgpe) + protgroup_offset; 1790 protgroup_len = sg_dma_len(sgpe) - protgroup_offset; 1791 1792 /* must be integer multiple of the DIF block length */ 1793 BUG_ON(protgroup_len % 8); 1794 1795 pde7 = (struct lpfc_pde7 *) bpl; 1796 memset(pde7, 0, sizeof(struct lpfc_pde7)); 1797 bf_set(pde7_type, pde7, LPFC_PDE7_DESCRIPTOR); 1798 1799 pde7->addrHigh = le32_to_cpu(putPaddrHigh(protphysaddr)); 1800 pde7->addrLow = le32_to_cpu(putPaddrLow(protphysaddr)); 1801 1802 protgrp_blks = protgroup_len / 8; 1803 protgrp_bytes = protgrp_blks * blksize; 1804 1805 /* check if this pde is crossing the 4K boundary; if so split */ 1806 if ((pde7->addrLow & 0xfff) + protgroup_len > 0x1000) { 1807 protgroup_remainder = 0x1000 - (pde7->addrLow & 0xfff); 1808 protgroup_offset += protgroup_remainder; 1809 protgrp_blks = protgroup_remainder / 8; 1810 protgrp_bytes = protgrp_blks * blksize; 1811 } else { 1812 protgroup_offset = 0; 1813 curr_prot++; 1814 } 1815 1816 num_bde++; 1817 1818 /* setup BDE's for data blocks associated with DIF data */ 1819 pgdone = 0; 1820 subtotal = 0; /* total bytes processed for current prot grp */ 1821 while (!pgdone) { 1822 /* Check to see if we ran out of space */ 1823 if (num_bde >= phba->cfg_total_seg_cnt) 1824 return num_bde + 1; 1825 1826 if (!sgde) { 1827 lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT, 1828 "9065 BLKGRD:%s Invalid data segment\n", 1829 __func__); 1830 return 0; 1831 } 1832 bpl++; 1833 dataphysaddr = sg_dma_address(sgde) + split_offset; 1834 bpl->addrLow = le32_to_cpu(putPaddrLow(dataphysaddr)); 1835 bpl->addrHigh = le32_to_cpu(putPaddrHigh(dataphysaddr)); 1836 1837 remainder = sg_dma_len(sgde) - split_offset; 1838 1839 if ((subtotal + remainder) <= protgrp_bytes) { 1840 /* we can use this whole buffer */ 1841 bpl->tus.f.bdeSize = remainder; 1842 split_offset = 0; 1843 1844 if ((subtotal + remainder) == protgrp_bytes) 1845 pgdone = 1; 1846 } else { 1847 /* must split this buffer with next prot grp */ 1848 bpl->tus.f.bdeSize = protgrp_bytes - subtotal; 1849 split_offset += bpl->tus.f.bdeSize; 1850 } 1851 1852 subtotal += bpl->tus.f.bdeSize; 1853 1854 if (datadir == DMA_TO_DEVICE) 1855 bpl->tus.f.bdeFlags = BUFF_TYPE_BDE_64; 1856 else 1857 bpl->tus.f.bdeFlags = BUFF_TYPE_BDE_64I; 1858 bpl->tus.w = le32_to_cpu(bpl->tus.w); 1859 1860 num_bde++; 1861 1862 if (split_offset) 1863 break; 1864 1865 /* Move to the next s/g segment if possible */ 1866 sgde = sg_next(sgde); 1867 1868 } 1869 1870 if (protgroup_offset) { 1871 /* update the reference tag */ 1872 reftag += protgrp_blks; 1873 bpl++; 1874 continue; 1875 } 1876 1877 /* are we done ? */ 1878 if (curr_prot == protcnt) { 1879 alldone = 1; 1880 } else if (curr_prot < protcnt) { 1881 /* advance to next prot buffer */ 1882 sgpe = sg_next(sgpe); 1883 bpl++; 1884 1885 /* update the reference tag */ 1886 reftag += protgrp_blks; 1887 } else { 1888 /* if we're here, we have a bug */ 1889 lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT, 1890 "9054 BLKGRD: bug in %s\n", __func__); 1891 } 1892 1893 } while (!alldone); 1894 out: 1895 1896 return num_bde; 1897 } 1898 1899 /** 1900 * lpfc_bg_setup_sgl - Setup BlockGuard SGL with no protection data 1901 * @phba: The Hba for which this call is being executed. 1902 * @sc: pointer to scsi command we're working on 1903 * @sgl: pointer to buffer list for protection groups 1904 * @datasegcnt: number of segments of data that have been dma mapped 1905 * @lpfc_cmd: lpfc scsi command object pointer. 1906 * 1907 * This function sets up SGL buffer list for protection groups of 1908 * type LPFC_PG_TYPE_NO_DIF 1909 * 1910 * This is usually used when the HBA is instructed to generate 1911 * DIFs and insert them into data stream (or strip DIF from 1912 * incoming data stream) 1913 * 1914 * The buffer list consists of just one protection group described 1915 * below: 1916 * +-------------------------+ 1917 * start of prot group --> | DI_SEED | 1918 * +-------------------------+ 1919 * | Data SGE | 1920 * +-------------------------+ 1921 * |more Data SGE's ... (opt)| 1922 * +-------------------------+ 1923 * 1924 * 1925 * Note: Data s/g buffers have been dma mapped 1926 * 1927 * Returns the number of SGEs added to the SGL. 1928 **/ 1929 static int 1930 lpfc_bg_setup_sgl(struct lpfc_hba *phba, struct scsi_cmnd *sc, 1931 struct sli4_sge *sgl, int datasegcnt, 1932 struct lpfc_io_buf *lpfc_cmd) 1933 { 1934 struct scatterlist *sgde = NULL; /* s/g data entry */ 1935 struct sli4_sge_diseed *diseed = NULL; 1936 dma_addr_t physaddr; 1937 int i = 0, num_sge = 0, status; 1938 uint32_t reftag; 1939 uint8_t txop, rxop; 1940 #ifdef CONFIG_SCSI_LPFC_DEBUG_FS 1941 uint32_t rc; 1942 #endif 1943 uint32_t checking = 1; 1944 uint32_t dma_len; 1945 uint32_t dma_offset = 0; 1946 struct sli4_hybrid_sgl *sgl_xtra = NULL; 1947 int j; 1948 bool lsp_just_set = false; 1949 1950 status = lpfc_sc_to_bg_opcodes(phba, sc, &txop, &rxop); 1951 if (status) 1952 goto out; 1953 1954 /* extract some info from the scsi command for pde*/ 1955 reftag = scsi_prot_ref_tag(sc); 1956 if (reftag == LPFC_INVALID_REFTAG) 1957 goto out; 1958 1959 #ifdef CONFIG_SCSI_LPFC_DEBUG_FS 1960 rc = lpfc_bg_err_inject(phba, sc, &reftag, NULL, 1); 1961 if (rc) { 1962 if (rc & BG_ERR_SWAP) 1963 lpfc_bg_err_opcodes(phba, sc, &txop, &rxop); 1964 if (rc & BG_ERR_CHECK) 1965 checking = 0; 1966 } 1967 #endif 1968 1969 /* setup DISEED with what we have */ 1970 diseed = (struct sli4_sge_diseed *) sgl; 1971 memset(diseed, 0, sizeof(struct sli4_sge_diseed)); 1972 bf_set(lpfc_sli4_sge_type, sgl, LPFC_SGE_TYPE_DISEED); 1973 1974 /* Endianness conversion if necessary */ 1975 diseed->ref_tag = cpu_to_le32(reftag); 1976 diseed->ref_tag_tran = diseed->ref_tag; 1977 1978 /* 1979 * We only need to check the data on READs, for WRITEs 1980 * protection data is automatically generated, not checked. 1981 */ 1982 if (sc->sc_data_direction == DMA_FROM_DEVICE) { 1983 if (sc->prot_flags & SCSI_PROT_GUARD_CHECK) 1984 bf_set(lpfc_sli4_sge_dif_ce, diseed, checking); 1985 else 1986 bf_set(lpfc_sli4_sge_dif_ce, diseed, 0); 1987 1988 if (sc->prot_flags & SCSI_PROT_REF_CHECK) 1989 bf_set(lpfc_sli4_sge_dif_re, diseed, checking); 1990 else 1991 bf_set(lpfc_sli4_sge_dif_re, diseed, 0); 1992 } 1993 1994 /* setup DISEED with the rest of the info */ 1995 bf_set(lpfc_sli4_sge_dif_optx, diseed, txop); 1996 bf_set(lpfc_sli4_sge_dif_oprx, diseed, rxop); 1997 1998 bf_set(lpfc_sli4_sge_dif_ai, diseed, 1); 1999 bf_set(lpfc_sli4_sge_dif_me, diseed, 0); 2000 2001 /* Endianness conversion if necessary for DISEED */ 2002 diseed->word2 = cpu_to_le32(diseed->word2); 2003 diseed->word3 = cpu_to_le32(diseed->word3); 2004 2005 /* advance bpl and increment sge count */ 2006 num_sge++; 2007 sgl++; 2008 2009 /* assumption: caller has already run dma_map_sg on command data */ 2010 sgde = scsi_sglist(sc); 2011 j = 3; 2012 for (i = 0; i < datasegcnt; i++) { 2013 /* clear it */ 2014 sgl->word2 = 0; 2015 2016 /* do we need to expand the segment */ 2017 if (!lsp_just_set && !((j + 1) % phba->border_sge_num) && 2018 ((datasegcnt - 1) != i)) { 2019 /* set LSP type */ 2020 bf_set(lpfc_sli4_sge_type, sgl, LPFC_SGE_TYPE_LSP); 2021 2022 sgl_xtra = lpfc_get_sgl_per_hdwq(phba, lpfc_cmd); 2023 2024 if (unlikely(!sgl_xtra)) { 2025 lpfc_cmd->seg_cnt = 0; 2026 return 0; 2027 } 2028 sgl->addr_lo = cpu_to_le32(putPaddrLow( 2029 sgl_xtra->dma_phys_sgl)); 2030 sgl->addr_hi = cpu_to_le32(putPaddrHigh( 2031 sgl_xtra->dma_phys_sgl)); 2032 2033 } else { 2034 bf_set(lpfc_sli4_sge_type, sgl, LPFC_SGE_TYPE_DATA); 2035 } 2036 2037 if (!(bf_get(lpfc_sli4_sge_type, sgl) & LPFC_SGE_TYPE_LSP)) { 2038 if ((datasegcnt - 1) == i) 2039 bf_set(lpfc_sli4_sge_last, sgl, 1); 2040 physaddr = sg_dma_address(sgde); 2041 dma_len = sg_dma_len(sgde); 2042 sgl->addr_lo = cpu_to_le32(putPaddrLow(physaddr)); 2043 sgl->addr_hi = cpu_to_le32(putPaddrHigh(physaddr)); 2044 2045 bf_set(lpfc_sli4_sge_offset, sgl, dma_offset); 2046 sgl->word2 = cpu_to_le32(sgl->word2); 2047 sgl->sge_len = cpu_to_le32(dma_len); 2048 2049 dma_offset += dma_len; 2050 sgde = sg_next(sgde); 2051 2052 sgl++; 2053 num_sge++; 2054 lsp_just_set = false; 2055 2056 } else { 2057 sgl->word2 = cpu_to_le32(sgl->word2); 2058 sgl->sge_len = cpu_to_le32(phba->cfg_sg_dma_buf_size); 2059 2060 sgl = (struct sli4_sge *)sgl_xtra->dma_sgl; 2061 i = i - 1; 2062 2063 lsp_just_set = true; 2064 } 2065 2066 j++; 2067 2068 } 2069 2070 out: 2071 return num_sge; 2072 } 2073 2074 /** 2075 * lpfc_bg_setup_sgl_prot - Setup BlockGuard SGL with protection data 2076 * @phba: The Hba for which this call is being executed. 2077 * @sc: pointer to scsi command we're working on 2078 * @sgl: pointer to buffer list for protection groups 2079 * @datacnt: number of segments of data that have been dma mapped 2080 * @protcnt: number of segment of protection data that have been dma mapped 2081 * @lpfc_cmd: lpfc scsi command object pointer. 2082 * 2083 * This function sets up SGL buffer list for protection groups of 2084 * type LPFC_PG_TYPE_DIF 2085 * 2086 * This is usually used when DIFs are in their own buffers, 2087 * separate from the data. The HBA can then by instructed 2088 * to place the DIFs in the outgoing stream. For read operations, 2089 * The HBA could extract the DIFs and place it in DIF buffers. 2090 * 2091 * The buffer list for this type consists of one or more of the 2092 * protection groups described below: 2093 * +-------------------------+ 2094 * start of first prot group --> | DISEED | 2095 * +-------------------------+ 2096 * | DIF (Prot SGE) | 2097 * +-------------------------+ 2098 * | Data SGE | 2099 * +-------------------------+ 2100 * |more Data SGE's ... (opt)| 2101 * +-------------------------+ 2102 * start of new prot group --> | DISEED | 2103 * +-------------------------+ 2104 * | ... | 2105 * +-------------------------+ 2106 * 2107 * Note: It is assumed that both data and protection s/g buffers have been 2108 * mapped for DMA 2109 * 2110 * Returns the number of SGEs added to the SGL. 2111 **/ 2112 static int 2113 lpfc_bg_setup_sgl_prot(struct lpfc_hba *phba, struct scsi_cmnd *sc, 2114 struct sli4_sge *sgl, int datacnt, int protcnt, 2115 struct lpfc_io_buf *lpfc_cmd) 2116 { 2117 struct scatterlist *sgde = NULL; /* s/g data entry */ 2118 struct scatterlist *sgpe = NULL; /* s/g prot entry */ 2119 struct sli4_sge_diseed *diseed = NULL; 2120 dma_addr_t dataphysaddr, protphysaddr; 2121 unsigned short curr_prot = 0; 2122 unsigned int split_offset; 2123 unsigned int protgroup_len, protgroup_offset = 0, protgroup_remainder; 2124 unsigned int protgrp_blks, protgrp_bytes; 2125 unsigned int remainder, subtotal; 2126 int status; 2127 unsigned char pgdone = 0, alldone = 0; 2128 unsigned blksize; 2129 uint32_t reftag; 2130 uint8_t txop, rxop; 2131 uint32_t dma_len; 2132 #ifdef CONFIG_SCSI_LPFC_DEBUG_FS 2133 uint32_t rc; 2134 #endif 2135 uint32_t checking = 1; 2136 uint32_t dma_offset = 0; 2137 int num_sge = 0, j = 2; 2138 struct sli4_hybrid_sgl *sgl_xtra = NULL; 2139 2140 sgpe = scsi_prot_sglist(sc); 2141 sgde = scsi_sglist(sc); 2142 2143 if (!sgpe || !sgde) { 2144 lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT, 2145 "9082 Invalid s/g entry: data=x%px prot=x%px\n", 2146 sgpe, sgde); 2147 return 0; 2148 } 2149 2150 status = lpfc_sc_to_bg_opcodes(phba, sc, &txop, &rxop); 2151 if (status) 2152 goto out; 2153 2154 /* extract some info from the scsi command */ 2155 blksize = scsi_prot_interval(sc); 2156 reftag = scsi_prot_ref_tag(sc); 2157 if (reftag == LPFC_INVALID_REFTAG) 2158 goto out; 2159 2160 #ifdef CONFIG_SCSI_LPFC_DEBUG_FS 2161 rc = lpfc_bg_err_inject(phba, sc, &reftag, NULL, 1); 2162 if (rc) { 2163 if (rc & BG_ERR_SWAP) 2164 lpfc_bg_err_opcodes(phba, sc, &txop, &rxop); 2165 if (rc & BG_ERR_CHECK) 2166 checking = 0; 2167 } 2168 #endif 2169 2170 split_offset = 0; 2171 do { 2172 /* Check to see if we ran out of space */ 2173 if ((num_sge >= (phba->cfg_total_seg_cnt - 2)) && 2174 !(phba->cfg_xpsgl)) 2175 return num_sge + 3; 2176 2177 /* DISEED and DIF have to be together */ 2178 if (!((j + 1) % phba->border_sge_num) || 2179 !((j + 2) % phba->border_sge_num) || 2180 !((j + 3) % phba->border_sge_num)) { 2181 sgl->word2 = 0; 2182 2183 /* set LSP type */ 2184 bf_set(lpfc_sli4_sge_type, sgl, LPFC_SGE_TYPE_LSP); 2185 2186 sgl_xtra = lpfc_get_sgl_per_hdwq(phba, lpfc_cmd); 2187 2188 if (unlikely(!sgl_xtra)) { 2189 goto out; 2190 } else { 2191 sgl->addr_lo = cpu_to_le32(putPaddrLow( 2192 sgl_xtra->dma_phys_sgl)); 2193 sgl->addr_hi = cpu_to_le32(putPaddrHigh( 2194 sgl_xtra->dma_phys_sgl)); 2195 } 2196 2197 sgl->word2 = cpu_to_le32(sgl->word2); 2198 sgl->sge_len = cpu_to_le32(phba->cfg_sg_dma_buf_size); 2199 2200 sgl = (struct sli4_sge *)sgl_xtra->dma_sgl; 2201 j = 0; 2202 } 2203 2204 /* setup DISEED with what we have */ 2205 diseed = (struct sli4_sge_diseed *) sgl; 2206 memset(diseed, 0, sizeof(struct sli4_sge_diseed)); 2207 bf_set(lpfc_sli4_sge_type, sgl, LPFC_SGE_TYPE_DISEED); 2208 2209 /* Endianness conversion if necessary */ 2210 diseed->ref_tag = cpu_to_le32(reftag); 2211 diseed->ref_tag_tran = diseed->ref_tag; 2212 2213 if (sc->prot_flags & SCSI_PROT_GUARD_CHECK) { 2214 bf_set(lpfc_sli4_sge_dif_ce, diseed, checking); 2215 } else { 2216 bf_set(lpfc_sli4_sge_dif_ce, diseed, 0); 2217 /* 2218 * When in this mode, the hardware will replace 2219 * the guard tag from the host with a 2220 * newly generated good CRC for the wire. 2221 * Switch to raw mode here to avoid this 2222 * behavior. What the host sends gets put on the wire. 2223 */ 2224 if (txop == BG_OP_IN_CRC_OUT_CRC) { 2225 txop = BG_OP_RAW_MODE; 2226 rxop = BG_OP_RAW_MODE; 2227 } 2228 } 2229 2230 2231 if (sc->prot_flags & SCSI_PROT_REF_CHECK) 2232 bf_set(lpfc_sli4_sge_dif_re, diseed, checking); 2233 else 2234 bf_set(lpfc_sli4_sge_dif_re, diseed, 0); 2235 2236 /* setup DISEED with the rest of the info */ 2237 bf_set(lpfc_sli4_sge_dif_optx, diseed, txop); 2238 bf_set(lpfc_sli4_sge_dif_oprx, diseed, rxop); 2239 2240 bf_set(lpfc_sli4_sge_dif_ai, diseed, 1); 2241 bf_set(lpfc_sli4_sge_dif_me, diseed, 0); 2242 2243 /* Endianness conversion if necessary for DISEED */ 2244 diseed->word2 = cpu_to_le32(diseed->word2); 2245 diseed->word3 = cpu_to_le32(diseed->word3); 2246 2247 /* advance sgl and increment bde count */ 2248 num_sge++; 2249 2250 sgl++; 2251 j++; 2252 2253 /* setup the first BDE that points to protection buffer */ 2254 protphysaddr = sg_dma_address(sgpe) + protgroup_offset; 2255 protgroup_len = sg_dma_len(sgpe) - protgroup_offset; 2256 2257 /* must be integer multiple of the DIF block length */ 2258 BUG_ON(protgroup_len % 8); 2259 2260 /* Now setup DIF SGE */ 2261 sgl->word2 = 0; 2262 bf_set(lpfc_sli4_sge_type, sgl, LPFC_SGE_TYPE_DIF); 2263 sgl->addr_hi = le32_to_cpu(putPaddrHigh(protphysaddr)); 2264 sgl->addr_lo = le32_to_cpu(putPaddrLow(protphysaddr)); 2265 sgl->word2 = cpu_to_le32(sgl->word2); 2266 sgl->sge_len = 0; 2267 2268 protgrp_blks = protgroup_len / 8; 2269 protgrp_bytes = protgrp_blks * blksize; 2270 2271 /* check if DIF SGE is crossing the 4K boundary; if so split */ 2272 if ((sgl->addr_lo & 0xfff) + protgroup_len > 0x1000) { 2273 protgroup_remainder = 0x1000 - (sgl->addr_lo & 0xfff); 2274 protgroup_offset += protgroup_remainder; 2275 protgrp_blks = protgroup_remainder / 8; 2276 protgrp_bytes = protgrp_blks * blksize; 2277 } else { 2278 protgroup_offset = 0; 2279 curr_prot++; 2280 } 2281 2282 num_sge++; 2283 2284 /* setup SGE's for data blocks associated with DIF data */ 2285 pgdone = 0; 2286 subtotal = 0; /* total bytes processed for current prot grp */ 2287 2288 sgl++; 2289 j++; 2290 2291 while (!pgdone) { 2292 /* Check to see if we ran out of space */ 2293 if ((num_sge >= phba->cfg_total_seg_cnt) && 2294 !phba->cfg_xpsgl) 2295 return num_sge + 1; 2296 2297 if (!sgde) { 2298 lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT, 2299 "9086 BLKGRD:%s Invalid data segment\n", 2300 __func__); 2301 return 0; 2302 } 2303 2304 if (!((j + 1) % phba->border_sge_num)) { 2305 sgl->word2 = 0; 2306 2307 /* set LSP type */ 2308 bf_set(lpfc_sli4_sge_type, sgl, 2309 LPFC_SGE_TYPE_LSP); 2310 2311 sgl_xtra = lpfc_get_sgl_per_hdwq(phba, 2312 lpfc_cmd); 2313 2314 if (unlikely(!sgl_xtra)) { 2315 goto out; 2316 } else { 2317 sgl->addr_lo = cpu_to_le32( 2318 putPaddrLow(sgl_xtra->dma_phys_sgl)); 2319 sgl->addr_hi = cpu_to_le32( 2320 putPaddrHigh(sgl_xtra->dma_phys_sgl)); 2321 } 2322 2323 sgl->word2 = cpu_to_le32(sgl->word2); 2324 sgl->sge_len = cpu_to_le32( 2325 phba->cfg_sg_dma_buf_size); 2326 2327 sgl = (struct sli4_sge *)sgl_xtra->dma_sgl; 2328 } else { 2329 dataphysaddr = sg_dma_address(sgde) + 2330 split_offset; 2331 2332 remainder = sg_dma_len(sgde) - split_offset; 2333 2334 if ((subtotal + remainder) <= protgrp_bytes) { 2335 /* we can use this whole buffer */ 2336 dma_len = remainder; 2337 split_offset = 0; 2338 2339 if ((subtotal + remainder) == 2340 protgrp_bytes) 2341 pgdone = 1; 2342 } else { 2343 /* must split this buffer with next 2344 * prot grp 2345 */ 2346 dma_len = protgrp_bytes - subtotal; 2347 split_offset += dma_len; 2348 } 2349 2350 subtotal += dma_len; 2351 2352 sgl->word2 = 0; 2353 sgl->addr_lo = cpu_to_le32(putPaddrLow( 2354 dataphysaddr)); 2355 sgl->addr_hi = cpu_to_le32(putPaddrHigh( 2356 dataphysaddr)); 2357 bf_set(lpfc_sli4_sge_last, sgl, 0); 2358 bf_set(lpfc_sli4_sge_offset, sgl, dma_offset); 2359 bf_set(lpfc_sli4_sge_type, sgl, 2360 LPFC_SGE_TYPE_DATA); 2361 2362 sgl->sge_len = cpu_to_le32(dma_len); 2363 dma_offset += dma_len; 2364 2365 num_sge++; 2366 2367 if (split_offset) { 2368 sgl++; 2369 j++; 2370 break; 2371 } 2372 2373 /* Move to the next s/g segment if possible */ 2374 sgde = sg_next(sgde); 2375 2376 sgl++; 2377 } 2378 2379 j++; 2380 } 2381 2382 if (protgroup_offset) { 2383 /* update the reference tag */ 2384 reftag += protgrp_blks; 2385 continue; 2386 } 2387 2388 /* are we done ? */ 2389 if (curr_prot == protcnt) { 2390 /* mark the last SGL */ 2391 sgl--; 2392 bf_set(lpfc_sli4_sge_last, sgl, 1); 2393 alldone = 1; 2394 } else if (curr_prot < protcnt) { 2395 /* advance to next prot buffer */ 2396 sgpe = sg_next(sgpe); 2397 2398 /* update the reference tag */ 2399 reftag += protgrp_blks; 2400 } else { 2401 /* if we're here, we have a bug */ 2402 lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT, 2403 "9085 BLKGRD: bug in %s\n", __func__); 2404 } 2405 2406 } while (!alldone); 2407 2408 out: 2409 2410 return num_sge; 2411 } 2412 2413 /** 2414 * lpfc_prot_group_type - Get prtotection group type of SCSI command 2415 * @phba: The Hba for which this call is being executed. 2416 * @sc: pointer to scsi command we're working on 2417 * 2418 * Given a SCSI command that supports DIF, determine composition of protection 2419 * groups involved in setting up buffer lists 2420 * 2421 * Returns: Protection group type (with or without DIF) 2422 * 2423 **/ 2424 static int 2425 lpfc_prot_group_type(struct lpfc_hba *phba, struct scsi_cmnd *sc) 2426 { 2427 int ret = LPFC_PG_TYPE_INVALID; 2428 unsigned char op = scsi_get_prot_op(sc); 2429 2430 switch (op) { 2431 case SCSI_PROT_READ_STRIP: 2432 case SCSI_PROT_WRITE_INSERT: 2433 ret = LPFC_PG_TYPE_NO_DIF; 2434 break; 2435 case SCSI_PROT_READ_INSERT: 2436 case SCSI_PROT_WRITE_STRIP: 2437 case SCSI_PROT_READ_PASS: 2438 case SCSI_PROT_WRITE_PASS: 2439 ret = LPFC_PG_TYPE_DIF_BUF; 2440 break; 2441 default: 2442 if (phba) 2443 lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT, 2444 "9021 Unsupported protection op:%d\n", 2445 op); 2446 break; 2447 } 2448 return ret; 2449 } 2450 2451 /** 2452 * lpfc_bg_scsi_adjust_dl - Adjust SCSI data length for BlockGuard 2453 * @phba: The Hba for which this call is being executed. 2454 * @lpfc_cmd: The scsi buffer which is going to be adjusted. 2455 * 2456 * Adjust the data length to account for how much data 2457 * is actually on the wire. 2458 * 2459 * returns the adjusted data length 2460 **/ 2461 static int 2462 lpfc_bg_scsi_adjust_dl(struct lpfc_hba *phba, 2463 struct lpfc_io_buf *lpfc_cmd) 2464 { 2465 struct scsi_cmnd *sc = lpfc_cmd->pCmd; 2466 int fcpdl; 2467 2468 fcpdl = scsi_bufflen(sc); 2469 2470 /* Check if there is protection data on the wire */ 2471 if (sc->sc_data_direction == DMA_FROM_DEVICE) { 2472 /* Read check for protection data */ 2473 if (scsi_get_prot_op(sc) == SCSI_PROT_READ_INSERT) 2474 return fcpdl; 2475 2476 } else { 2477 /* Write check for protection data */ 2478 if (scsi_get_prot_op(sc) == SCSI_PROT_WRITE_STRIP) 2479 return fcpdl; 2480 } 2481 2482 /* 2483 * If we are in DIF Type 1 mode every data block has a 8 byte 2484 * DIF (trailer) attached to it. Must ajust FCP data length 2485 * to account for the protection data. 2486 */ 2487 fcpdl += (fcpdl / scsi_prot_interval(sc)) * 8; 2488 2489 return fcpdl; 2490 } 2491 2492 /** 2493 * lpfc_bg_scsi_prep_dma_buf_s3 - DMA mapping for scsi buffer to SLI3 IF spec 2494 * @phba: The Hba for which this call is being executed. 2495 * @lpfc_cmd: The scsi buffer which is going to be prep'ed. 2496 * 2497 * This is the protection/DIF aware version of 2498 * lpfc_scsi_prep_dma_buf(). It may be a good idea to combine the 2499 * two functions eventually, but for now, it's here. 2500 * RETURNS 0 - SUCCESS, 2501 * 1 - Failed DMA map, retry. 2502 * 2 - Invalid scsi cmd or prot-type. Do not rety. 2503 **/ 2504 static int 2505 lpfc_bg_scsi_prep_dma_buf_s3(struct lpfc_hba *phba, 2506 struct lpfc_io_buf *lpfc_cmd) 2507 { 2508 struct scsi_cmnd *scsi_cmnd = lpfc_cmd->pCmd; 2509 struct fcp_cmnd *fcp_cmnd = lpfc_cmd->fcp_cmnd; 2510 struct ulp_bde64 *bpl = (struct ulp_bde64 *)lpfc_cmd->dma_sgl; 2511 IOCB_t *iocb_cmd = &lpfc_cmd->cur_iocbq.iocb; 2512 uint32_t num_bde = 0; 2513 int datasegcnt, protsegcnt, datadir = scsi_cmnd->sc_data_direction; 2514 int prot_group_type = 0; 2515 int fcpdl; 2516 int ret = 1; 2517 struct lpfc_vport *vport = phba->pport; 2518 2519 /* 2520 * Start the lpfc command prep by bumping the bpl beyond fcp_cmnd 2521 * fcp_rsp regions to the first data bde entry 2522 */ 2523 bpl += 2; 2524 if (scsi_sg_count(scsi_cmnd)) { 2525 /* 2526 * The driver stores the segment count returned from dma_map_sg 2527 * because this a count of dma-mappings used to map the use_sg 2528 * pages. They are not guaranteed to be the same for those 2529 * architectures that implement an IOMMU. 2530 */ 2531 datasegcnt = dma_map_sg(&phba->pcidev->dev, 2532 scsi_sglist(scsi_cmnd), 2533 scsi_sg_count(scsi_cmnd), datadir); 2534 if (unlikely(!datasegcnt)) 2535 return 1; 2536 2537 lpfc_cmd->seg_cnt = datasegcnt; 2538 2539 /* First check if data segment count from SCSI Layer is good */ 2540 if (lpfc_cmd->seg_cnt > phba->cfg_sg_seg_cnt) { 2541 WARN_ON_ONCE(lpfc_cmd->seg_cnt > phba->cfg_sg_seg_cnt); 2542 ret = 2; 2543 goto err; 2544 } 2545 2546 prot_group_type = lpfc_prot_group_type(phba, scsi_cmnd); 2547 2548 switch (prot_group_type) { 2549 case LPFC_PG_TYPE_NO_DIF: 2550 2551 /* Here we need to add a PDE5 and PDE6 to the count */ 2552 if ((lpfc_cmd->seg_cnt + 2) > phba->cfg_total_seg_cnt) { 2553 ret = 2; 2554 goto err; 2555 } 2556 2557 num_bde = lpfc_bg_setup_bpl(phba, scsi_cmnd, bpl, 2558 datasegcnt); 2559 /* we should have 2 or more entries in buffer list */ 2560 if (num_bde < 2) { 2561 ret = 2; 2562 goto err; 2563 } 2564 break; 2565 2566 case LPFC_PG_TYPE_DIF_BUF: 2567 /* 2568 * This type indicates that protection buffers are 2569 * passed to the driver, so that needs to be prepared 2570 * for DMA 2571 */ 2572 protsegcnt = dma_map_sg(&phba->pcidev->dev, 2573 scsi_prot_sglist(scsi_cmnd), 2574 scsi_prot_sg_count(scsi_cmnd), datadir); 2575 if (unlikely(!protsegcnt)) { 2576 scsi_dma_unmap(scsi_cmnd); 2577 return 1; 2578 } 2579 2580 lpfc_cmd->prot_seg_cnt = protsegcnt; 2581 2582 /* 2583 * There is a minimun of 4 BPLs used for every 2584 * protection data segment. 2585 */ 2586 if ((lpfc_cmd->prot_seg_cnt * 4) > 2587 (phba->cfg_total_seg_cnt - 2)) { 2588 ret = 2; 2589 goto err; 2590 } 2591 2592 num_bde = lpfc_bg_setup_bpl_prot(phba, scsi_cmnd, bpl, 2593 datasegcnt, protsegcnt); 2594 /* we should have 3 or more entries in buffer list */ 2595 if ((num_bde < 3) || 2596 (num_bde > phba->cfg_total_seg_cnt)) { 2597 ret = 2; 2598 goto err; 2599 } 2600 break; 2601 2602 case LPFC_PG_TYPE_INVALID: 2603 default: 2604 scsi_dma_unmap(scsi_cmnd); 2605 lpfc_cmd->seg_cnt = 0; 2606 2607 lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT, 2608 "9022 Unexpected protection group %i\n", 2609 prot_group_type); 2610 return 2; 2611 } 2612 } 2613 2614 /* 2615 * Finish initializing those IOCB fields that are dependent on the 2616 * scsi_cmnd request_buffer. Note that the bdeSize is explicitly 2617 * reinitialized since all iocb memory resources are used many times 2618 * for transmit, receive, and continuation bpl's. 2619 */ 2620 iocb_cmd->un.fcpi64.bdl.bdeSize = (2 * sizeof(struct ulp_bde64)); 2621 iocb_cmd->un.fcpi64.bdl.bdeSize += (num_bde * sizeof(struct ulp_bde64)); 2622 iocb_cmd->ulpBdeCount = 1; 2623 iocb_cmd->ulpLe = 1; 2624 2625 fcpdl = lpfc_bg_scsi_adjust_dl(phba, lpfc_cmd); 2626 fcp_cmnd->fcpDl = be32_to_cpu(fcpdl); 2627 2628 /* 2629 * Due to difference in data length between DIF/non-DIF paths, 2630 * we need to set word 4 of IOCB here 2631 */ 2632 iocb_cmd->un.fcpi.fcpi_parm = fcpdl; 2633 2634 /* 2635 * For First burst, we may need to adjust the initial transfer 2636 * length for DIF 2637 */ 2638 if (iocb_cmd->un.fcpi.fcpi_XRdy && 2639 (fcpdl < vport->cfg_first_burst_size)) 2640 iocb_cmd->un.fcpi.fcpi_XRdy = fcpdl; 2641 2642 return 0; 2643 err: 2644 if (lpfc_cmd->seg_cnt) 2645 scsi_dma_unmap(scsi_cmnd); 2646 if (lpfc_cmd->prot_seg_cnt) 2647 dma_unmap_sg(&phba->pcidev->dev, scsi_prot_sglist(scsi_cmnd), 2648 scsi_prot_sg_count(scsi_cmnd), 2649 scsi_cmnd->sc_data_direction); 2650 2651 lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT, 2652 "9023 Cannot setup S/G List for HBA" 2653 "IO segs %d/%d BPL %d SCSI %d: %d %d\n", 2654 lpfc_cmd->seg_cnt, lpfc_cmd->prot_seg_cnt, 2655 phba->cfg_total_seg_cnt, phba->cfg_sg_seg_cnt, 2656 prot_group_type, num_bde); 2657 2658 lpfc_cmd->seg_cnt = 0; 2659 lpfc_cmd->prot_seg_cnt = 0; 2660 return ret; 2661 } 2662 2663 /* 2664 * This function calcuates the T10 DIF guard tag 2665 * on the specified data using a CRC algorithmn 2666 * using crc_t10dif. 2667 */ 2668 static uint16_t 2669 lpfc_bg_crc(uint8_t *data, int count) 2670 { 2671 uint16_t crc = 0; 2672 uint16_t x; 2673 2674 crc = crc_t10dif(data, count); 2675 x = cpu_to_be16(crc); 2676 return x; 2677 } 2678 2679 /* 2680 * This function calcuates the T10 DIF guard tag 2681 * on the specified data using a CSUM algorithmn 2682 * using ip_compute_csum. 2683 */ 2684 static uint16_t 2685 lpfc_bg_csum(uint8_t *data, int count) 2686 { 2687 uint16_t ret; 2688 2689 ret = ip_compute_csum(data, count); 2690 return ret; 2691 } 2692 2693 /* 2694 * This function examines the protection data to try to determine 2695 * what type of T10-DIF error occurred. 2696 */ 2697 static void 2698 lpfc_calc_bg_err(struct lpfc_hba *phba, struct lpfc_io_buf *lpfc_cmd) 2699 { 2700 struct scatterlist *sgpe; /* s/g prot entry */ 2701 struct scatterlist *sgde; /* s/g data entry */ 2702 struct scsi_cmnd *cmd = lpfc_cmd->pCmd; 2703 struct scsi_dif_tuple *src = NULL; 2704 uint8_t *data_src = NULL; 2705 uint16_t guard_tag; 2706 uint16_t start_app_tag, app_tag; 2707 uint32_t start_ref_tag, ref_tag; 2708 int prot, protsegcnt; 2709 int err_type, len, data_len; 2710 int chk_ref, chk_app, chk_guard; 2711 uint16_t sum; 2712 unsigned blksize; 2713 2714 err_type = BGS_GUARD_ERR_MASK; 2715 sum = 0; 2716 guard_tag = 0; 2717 2718 /* First check to see if there is protection data to examine */ 2719 prot = scsi_get_prot_op(cmd); 2720 if ((prot == SCSI_PROT_READ_STRIP) || 2721 (prot == SCSI_PROT_WRITE_INSERT) || 2722 (prot == SCSI_PROT_NORMAL)) 2723 goto out; 2724 2725 /* Currently the driver just supports ref_tag and guard_tag checking */ 2726 chk_ref = 1; 2727 chk_app = 0; 2728 chk_guard = 0; 2729 2730 /* Setup a ptr to the protection data provided by the SCSI host */ 2731 sgpe = scsi_prot_sglist(cmd); 2732 protsegcnt = lpfc_cmd->prot_seg_cnt; 2733 2734 if (sgpe && protsegcnt) { 2735 2736 /* 2737 * We will only try to verify guard tag if the segment 2738 * data length is a multiple of the blksize. 2739 */ 2740 sgde = scsi_sglist(cmd); 2741 blksize = scsi_prot_interval(cmd); 2742 data_src = (uint8_t *)sg_virt(sgde); 2743 data_len = sgde->length; 2744 if ((data_len & (blksize - 1)) == 0) 2745 chk_guard = 1; 2746 2747 src = (struct scsi_dif_tuple *)sg_virt(sgpe); 2748 start_ref_tag = scsi_prot_ref_tag(cmd); 2749 if (start_ref_tag == LPFC_INVALID_REFTAG) 2750 goto out; 2751 start_app_tag = src->app_tag; 2752 len = sgpe->length; 2753 while (src && protsegcnt) { 2754 while (len) { 2755 2756 /* 2757 * First check to see if a protection data 2758 * check is valid 2759 */ 2760 if ((src->ref_tag == T10_PI_REF_ESCAPE) || 2761 (src->app_tag == T10_PI_APP_ESCAPE)) { 2762 start_ref_tag++; 2763 goto skipit; 2764 } 2765 2766 /* First Guard Tag checking */ 2767 if (chk_guard) { 2768 guard_tag = src->guard_tag; 2769 if (cmd->prot_flags 2770 & SCSI_PROT_IP_CHECKSUM) 2771 sum = lpfc_bg_csum(data_src, 2772 blksize); 2773 else 2774 sum = lpfc_bg_crc(data_src, 2775 blksize); 2776 if ((guard_tag != sum)) { 2777 err_type = BGS_GUARD_ERR_MASK; 2778 goto out; 2779 } 2780 } 2781 2782 /* Reference Tag checking */ 2783 ref_tag = be32_to_cpu(src->ref_tag); 2784 if (chk_ref && (ref_tag != start_ref_tag)) { 2785 err_type = BGS_REFTAG_ERR_MASK; 2786 goto out; 2787 } 2788 start_ref_tag++; 2789 2790 /* App Tag checking */ 2791 app_tag = src->app_tag; 2792 if (chk_app && (app_tag != start_app_tag)) { 2793 err_type = BGS_APPTAG_ERR_MASK; 2794 goto out; 2795 } 2796 skipit: 2797 len -= sizeof(struct scsi_dif_tuple); 2798 if (len < 0) 2799 len = 0; 2800 src++; 2801 2802 data_src += blksize; 2803 data_len -= blksize; 2804 2805 /* 2806 * Are we at the end of the Data segment? 2807 * The data segment is only used for Guard 2808 * tag checking. 2809 */ 2810 if (chk_guard && (data_len == 0)) { 2811 chk_guard = 0; 2812 sgde = sg_next(sgde); 2813 if (!sgde) 2814 goto out; 2815 2816 data_src = (uint8_t *)sg_virt(sgde); 2817 data_len = sgde->length; 2818 if ((data_len & (blksize - 1)) == 0) 2819 chk_guard = 1; 2820 } 2821 } 2822 2823 /* Goto the next Protection data segment */ 2824 sgpe = sg_next(sgpe); 2825 if (sgpe) { 2826 src = (struct scsi_dif_tuple *)sg_virt(sgpe); 2827 len = sgpe->length; 2828 } else { 2829 src = NULL; 2830 } 2831 protsegcnt--; 2832 } 2833 } 2834 out: 2835 if (err_type == BGS_GUARD_ERR_MASK) { 2836 scsi_build_sense(cmd, 1, ILLEGAL_REQUEST, 0x10, 0x1); 2837 set_host_byte(cmd, DID_ABORT); 2838 phba->bg_guard_err_cnt++; 2839 lpfc_printf_log(phba, KERN_WARNING, LOG_FCP | LOG_BG, 2840 "9069 BLKGRD: reftag %x grd_tag err %x != %x\n", 2841 scsi_prot_ref_tag(cmd), 2842 sum, guard_tag); 2843 2844 } else if (err_type == BGS_REFTAG_ERR_MASK) { 2845 scsi_build_sense(cmd, 1, ILLEGAL_REQUEST, 0x10, 0x3); 2846 set_host_byte(cmd, DID_ABORT); 2847 2848 phba->bg_reftag_err_cnt++; 2849 lpfc_printf_log(phba, KERN_WARNING, LOG_FCP | LOG_BG, 2850 "9066 BLKGRD: reftag %x ref_tag err %x != %x\n", 2851 scsi_prot_ref_tag(cmd), 2852 ref_tag, start_ref_tag); 2853 2854 } else if (err_type == BGS_APPTAG_ERR_MASK) { 2855 scsi_build_sense(cmd, 1, ILLEGAL_REQUEST, 0x10, 0x2); 2856 set_host_byte(cmd, DID_ABORT); 2857 2858 phba->bg_apptag_err_cnt++; 2859 lpfc_printf_log(phba, KERN_WARNING, LOG_FCP | LOG_BG, 2860 "9041 BLKGRD: reftag %x app_tag err %x != %x\n", 2861 scsi_prot_ref_tag(cmd), 2862 app_tag, start_app_tag); 2863 } 2864 } 2865 2866 /* 2867 * This function checks for BlockGuard errors detected by 2868 * the HBA. In case of errors, the ASC/ASCQ fields in the 2869 * sense buffer will be set accordingly, paired with 2870 * ILLEGAL_REQUEST to signal to the kernel that the HBA 2871 * detected corruption. 2872 * 2873 * Returns: 2874 * 0 - No error found 2875 * 1 - BlockGuard error found 2876 * -1 - Internal error (bad profile, ...etc) 2877 */ 2878 static int 2879 lpfc_parse_bg_err(struct lpfc_hba *phba, struct lpfc_io_buf *lpfc_cmd, 2880 struct lpfc_iocbq *pIocbOut) 2881 { 2882 struct scsi_cmnd *cmd = lpfc_cmd->pCmd; 2883 struct sli3_bg_fields *bgf; 2884 int ret = 0; 2885 struct lpfc_wcqe_complete *wcqe; 2886 u32 status; 2887 u32 bghm = 0; 2888 u32 bgstat = 0; 2889 u64 failing_sector = 0; 2890 2891 if (phba->sli_rev == LPFC_SLI_REV4) { 2892 wcqe = &pIocbOut->wcqe_cmpl; 2893 status = bf_get(lpfc_wcqe_c_status, wcqe); 2894 2895 if (status == CQE_STATUS_DI_ERROR) { 2896 /* Guard Check failed */ 2897 if (bf_get(lpfc_wcqe_c_bg_ge, wcqe)) 2898 bgstat |= BGS_GUARD_ERR_MASK; 2899 2900 /* AppTag Check failed */ 2901 if (bf_get(lpfc_wcqe_c_bg_ae, wcqe)) 2902 bgstat |= BGS_APPTAG_ERR_MASK; 2903 2904 /* RefTag Check failed */ 2905 if (bf_get(lpfc_wcqe_c_bg_re, wcqe)) 2906 bgstat |= BGS_REFTAG_ERR_MASK; 2907 2908 /* Check to see if there was any good data before the 2909 * error 2910 */ 2911 if (bf_get(lpfc_wcqe_c_bg_tdpv, wcqe)) { 2912 bgstat |= BGS_HI_WATER_MARK_PRESENT_MASK; 2913 bghm = wcqe->total_data_placed; 2914 } 2915 2916 /* 2917 * Set ALL the error bits to indicate we don't know what 2918 * type of error it is. 2919 */ 2920 if (!bgstat) 2921 bgstat |= (BGS_REFTAG_ERR_MASK | 2922 BGS_APPTAG_ERR_MASK | 2923 BGS_GUARD_ERR_MASK); 2924 } 2925 2926 } else { 2927 bgf = &pIocbOut->iocb.unsli3.sli3_bg; 2928 bghm = bgf->bghm; 2929 bgstat = bgf->bgstat; 2930 } 2931 2932 if (lpfc_bgs_get_invalid_prof(bgstat)) { 2933 cmd->result = DID_ERROR << 16; 2934 lpfc_printf_log(phba, KERN_WARNING, LOG_FCP | LOG_BG, 2935 "9072 BLKGRD: Invalid BG Profile 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_uninit_dif_block(bgstat)) { 2945 cmd->result = DID_ERROR << 16; 2946 lpfc_printf_log(phba, KERN_WARNING, LOG_FCP | LOG_BG, 2947 "9073 BLKGRD: Invalid BG PDIF Block in cmd " 2948 "0x%x reftag 0x%x blk cnt 0x%x " 2949 "bgstat=x%x bghm=x%x\n", cmd->cmnd[0], 2950 scsi_prot_ref_tag(cmd), 2951 scsi_logical_block_count(cmd), bgstat, bghm); 2952 ret = (-1); 2953 goto out; 2954 } 2955 2956 if (lpfc_bgs_get_guard_err(bgstat)) { 2957 ret = 1; 2958 scsi_build_sense(cmd, 1, ILLEGAL_REQUEST, 0x10, 0x1); 2959 set_host_byte(cmd, DID_ABORT); 2960 phba->bg_guard_err_cnt++; 2961 lpfc_printf_log(phba, KERN_WARNING, LOG_FCP | LOG_BG, 2962 "9055 BLKGRD: Guard Tag error in cmd " 2963 "0x%x reftag 0x%x blk cnt 0x%x " 2964 "bgstat=x%x bghm=x%x\n", cmd->cmnd[0], 2965 scsi_prot_ref_tag(cmd), 2966 scsi_logical_block_count(cmd), bgstat, bghm); 2967 } 2968 2969 if (lpfc_bgs_get_reftag_err(bgstat)) { 2970 ret = 1; 2971 scsi_build_sense(cmd, 1, ILLEGAL_REQUEST, 0x10, 0x3); 2972 set_host_byte(cmd, DID_ABORT); 2973 phba->bg_reftag_err_cnt++; 2974 lpfc_printf_log(phba, KERN_WARNING, LOG_FCP | LOG_BG, 2975 "9056 BLKGRD: Ref Tag error in cmd " 2976 "0x%x reftag 0x%x blk cnt 0x%x " 2977 "bgstat=x%x bghm=x%x\n", cmd->cmnd[0], 2978 scsi_prot_ref_tag(cmd), 2979 scsi_logical_block_count(cmd), bgstat, bghm); 2980 } 2981 2982 if (lpfc_bgs_get_apptag_err(bgstat)) { 2983 ret = 1; 2984 scsi_build_sense(cmd, 1, ILLEGAL_REQUEST, 0x10, 0x2); 2985 set_host_byte(cmd, DID_ABORT); 2986 phba->bg_apptag_err_cnt++; 2987 lpfc_printf_log(phba, KERN_WARNING, LOG_FCP | LOG_BG, 2988 "9061 BLKGRD: App Tag error in cmd " 2989 "0x%x reftag 0x%x blk cnt 0x%x " 2990 "bgstat=x%x bghm=x%x\n", cmd->cmnd[0], 2991 scsi_prot_ref_tag(cmd), 2992 scsi_logical_block_count(cmd), bgstat, bghm); 2993 } 2994 2995 if (lpfc_bgs_get_hi_water_mark_present(bgstat)) { 2996 /* 2997 * setup sense data descriptor 0 per SPC-4 as an information 2998 * field, and put the failing LBA in it. 2999 * This code assumes there was also a guard/app/ref tag error 3000 * indication. 3001 */ 3002 cmd->sense_buffer[7] = 0xc; /* Additional sense length */ 3003 cmd->sense_buffer[8] = 0; /* Information descriptor type */ 3004 cmd->sense_buffer[9] = 0xa; /* Additional descriptor length */ 3005 cmd->sense_buffer[10] = 0x80; /* Validity bit */ 3006 3007 /* bghm is a "on the wire" FC frame based count */ 3008 switch (scsi_get_prot_op(cmd)) { 3009 case SCSI_PROT_READ_INSERT: 3010 case SCSI_PROT_WRITE_STRIP: 3011 bghm /= cmd->device->sector_size; 3012 break; 3013 case SCSI_PROT_READ_STRIP: 3014 case SCSI_PROT_WRITE_INSERT: 3015 case SCSI_PROT_READ_PASS: 3016 case SCSI_PROT_WRITE_PASS: 3017 bghm /= (cmd->device->sector_size + 3018 sizeof(struct scsi_dif_tuple)); 3019 break; 3020 } 3021 3022 failing_sector = scsi_get_lba(cmd); 3023 failing_sector += bghm; 3024 3025 /* Descriptor Information */ 3026 put_unaligned_be64(failing_sector, &cmd->sense_buffer[12]); 3027 } 3028 3029 if (!ret) { 3030 /* No error was reported - problem in FW? */ 3031 lpfc_printf_log(phba, KERN_WARNING, LOG_FCP | LOG_BG, 3032 "9057 BLKGRD: Unknown error in cmd " 3033 "0x%x reftag 0x%x blk cnt 0x%x " 3034 "bgstat=x%x bghm=x%x\n", cmd->cmnd[0], 3035 scsi_prot_ref_tag(cmd), 3036 scsi_logical_block_count(cmd), bgstat, bghm); 3037 3038 /* Calculate what type of error it was */ 3039 lpfc_calc_bg_err(phba, lpfc_cmd); 3040 } 3041 out: 3042 return ret; 3043 } 3044 3045 /** 3046 * lpfc_scsi_prep_dma_buf_s4 - DMA mapping for scsi buffer to SLI4 IF spec 3047 * @phba: The Hba for which this call is being executed. 3048 * @lpfc_cmd: The scsi buffer which is going to be mapped. 3049 * 3050 * This routine does the pci dma mapping for scatter-gather list of scsi cmnd 3051 * field of @lpfc_cmd for device with SLI-4 interface spec. 3052 * 3053 * Return codes: 3054 * 2 - Error - Do not retry 3055 * 1 - Error - Retry 3056 * 0 - Success 3057 **/ 3058 static int 3059 lpfc_scsi_prep_dma_buf_s4(struct lpfc_hba *phba, struct lpfc_io_buf *lpfc_cmd) 3060 { 3061 struct scsi_cmnd *scsi_cmnd = lpfc_cmd->pCmd; 3062 struct scatterlist *sgel = NULL; 3063 struct fcp_cmnd *fcp_cmnd = lpfc_cmd->fcp_cmnd; 3064 struct sli4_sge *sgl = (struct sli4_sge *)lpfc_cmd->dma_sgl; 3065 struct sli4_sge *first_data_sgl; 3066 struct lpfc_iocbq *pwqeq = &lpfc_cmd->cur_iocbq; 3067 struct lpfc_vport *vport = phba->pport; 3068 union lpfc_wqe128 *wqe = &pwqeq->wqe; 3069 dma_addr_t physaddr; 3070 uint32_t dma_len; 3071 uint32_t dma_offset = 0; 3072 int nseg, i, j; 3073 struct ulp_bde64 *bde; 3074 bool lsp_just_set = false; 3075 struct sli4_hybrid_sgl *sgl_xtra = NULL; 3076 3077 /* 3078 * There are three possibilities here - use scatter-gather segment, use 3079 * the single mapping, or neither. Start the lpfc command prep by 3080 * bumping the bpl beyond the fcp_cmnd and fcp_rsp regions to the first 3081 * data bde entry. 3082 */ 3083 if (scsi_sg_count(scsi_cmnd)) { 3084 /* 3085 * The driver stores the segment count returned from dma_map_sg 3086 * because this a count of dma-mappings used to map the use_sg 3087 * pages. They are not guaranteed to be the same for those 3088 * architectures that implement an IOMMU. 3089 */ 3090 3091 nseg = scsi_dma_map(scsi_cmnd); 3092 if (unlikely(nseg <= 0)) 3093 return 1; 3094 sgl += 1; 3095 /* clear the last flag in the fcp_rsp map entry */ 3096 sgl->word2 = le32_to_cpu(sgl->word2); 3097 bf_set(lpfc_sli4_sge_last, sgl, 0); 3098 sgl->word2 = cpu_to_le32(sgl->word2); 3099 sgl += 1; 3100 first_data_sgl = sgl; 3101 lpfc_cmd->seg_cnt = nseg; 3102 if (!phba->cfg_xpsgl && 3103 lpfc_cmd->seg_cnt > phba->cfg_sg_seg_cnt) { 3104 lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT, 3105 "9074 BLKGRD:" 3106 " %s: Too many sg segments from " 3107 "dma_map_sg. Config %d, seg_cnt %d\n", 3108 __func__, phba->cfg_sg_seg_cnt, 3109 lpfc_cmd->seg_cnt); 3110 WARN_ON_ONCE(lpfc_cmd->seg_cnt > phba->cfg_sg_seg_cnt); 3111 lpfc_cmd->seg_cnt = 0; 3112 scsi_dma_unmap(scsi_cmnd); 3113 return 2; 3114 } 3115 3116 /* 3117 * The driver established a maximum scatter-gather segment count 3118 * during probe that limits the number of sg elements in any 3119 * single scsi command. Just run through the seg_cnt and format 3120 * the sge's. 3121 * When using SLI-3 the driver will try to fit all the BDEs into 3122 * the IOCB. If it can't then the BDEs get added to a BPL as it 3123 * does for SLI-2 mode. 3124 */ 3125 3126 /* for tracking segment boundaries */ 3127 sgel = scsi_sglist(scsi_cmnd); 3128 j = 2; 3129 for (i = 0; i < nseg; i++) { 3130 sgl->word2 = 0; 3131 if (nseg == 1) { 3132 bf_set(lpfc_sli4_sge_last, sgl, 1); 3133 bf_set(lpfc_sli4_sge_type, sgl, 3134 LPFC_SGE_TYPE_DATA); 3135 } else { 3136 bf_set(lpfc_sli4_sge_last, sgl, 0); 3137 3138 /* do we need to expand the segment */ 3139 if (!lsp_just_set && 3140 !((j + 1) % phba->border_sge_num) && 3141 ((nseg - 1) != i)) { 3142 /* set LSP type */ 3143 bf_set(lpfc_sli4_sge_type, sgl, 3144 LPFC_SGE_TYPE_LSP); 3145 3146 sgl_xtra = lpfc_get_sgl_per_hdwq( 3147 phba, lpfc_cmd); 3148 3149 if (unlikely(!sgl_xtra)) { 3150 lpfc_cmd->seg_cnt = 0; 3151 scsi_dma_unmap(scsi_cmnd); 3152 return 1; 3153 } 3154 sgl->addr_lo = cpu_to_le32(putPaddrLow( 3155 sgl_xtra->dma_phys_sgl)); 3156 sgl->addr_hi = cpu_to_le32(putPaddrHigh( 3157 sgl_xtra->dma_phys_sgl)); 3158 3159 } else { 3160 bf_set(lpfc_sli4_sge_type, sgl, 3161 LPFC_SGE_TYPE_DATA); 3162 } 3163 } 3164 3165 if (!(bf_get(lpfc_sli4_sge_type, sgl) & 3166 LPFC_SGE_TYPE_LSP)) { 3167 if ((nseg - 1) == i) 3168 bf_set(lpfc_sli4_sge_last, sgl, 1); 3169 3170 physaddr = sg_dma_address(sgel); 3171 dma_len = sg_dma_len(sgel); 3172 sgl->addr_lo = cpu_to_le32(putPaddrLow( 3173 physaddr)); 3174 sgl->addr_hi = cpu_to_le32(putPaddrHigh( 3175 physaddr)); 3176 3177 bf_set(lpfc_sli4_sge_offset, sgl, dma_offset); 3178 sgl->word2 = cpu_to_le32(sgl->word2); 3179 sgl->sge_len = cpu_to_le32(dma_len); 3180 3181 dma_offset += dma_len; 3182 sgel = sg_next(sgel); 3183 3184 sgl++; 3185 lsp_just_set = false; 3186 3187 } else { 3188 sgl->word2 = cpu_to_le32(sgl->word2); 3189 sgl->sge_len = cpu_to_le32( 3190 phba->cfg_sg_dma_buf_size); 3191 3192 sgl = (struct sli4_sge *)sgl_xtra->dma_sgl; 3193 i = i - 1; 3194 3195 lsp_just_set = true; 3196 } 3197 3198 j++; 3199 } 3200 3201 /* PBDE support for first data SGE only. 3202 * For FCoE, we key off Performance Hints. 3203 * For FC, we key off lpfc_enable_pbde. 3204 */ 3205 if (nseg == 1 && 3206 ((phba->sli3_options & LPFC_SLI4_PERFH_ENABLED) || 3207 phba->cfg_enable_pbde)) { 3208 /* Words 13-15 */ 3209 bde = (struct ulp_bde64 *) 3210 &wqe->words[13]; 3211 bde->addrLow = first_data_sgl->addr_lo; 3212 bde->addrHigh = first_data_sgl->addr_hi; 3213 bde->tus.f.bdeSize = 3214 le32_to_cpu(first_data_sgl->sge_len); 3215 bde->tus.f.bdeFlags = BUFF_TYPE_BDE_64; 3216 bde->tus.w = cpu_to_le32(bde->tus.w); 3217 3218 /* Word 11 - set PBDE bit */ 3219 bf_set(wqe_pbde, &wqe->generic.wqe_com, 1); 3220 } else { 3221 memset(&wqe->words[13], 0, (sizeof(uint32_t) * 3)); 3222 /* Word 11 - PBDE bit disabled by default template */ 3223 } 3224 } else { 3225 sgl += 1; 3226 /* set the last flag in the fcp_rsp map entry */ 3227 sgl->word2 = le32_to_cpu(sgl->word2); 3228 bf_set(lpfc_sli4_sge_last, sgl, 1); 3229 sgl->word2 = cpu_to_le32(sgl->word2); 3230 3231 if ((phba->sli3_options & LPFC_SLI4_PERFH_ENABLED) || 3232 phba->cfg_enable_pbde) { 3233 bde = (struct ulp_bde64 *) 3234 &wqe->words[13]; 3235 memset(bde, 0, (sizeof(uint32_t) * 3)); 3236 } 3237 } 3238 3239 /* 3240 * Finish initializing those IOCB fields that are dependent on the 3241 * scsi_cmnd request_buffer. Note that for SLI-2 the bdeSize is 3242 * explicitly reinitialized. 3243 * all iocb memory resources are reused. 3244 */ 3245 fcp_cmnd->fcpDl = cpu_to_be32(scsi_bufflen(scsi_cmnd)); 3246 /* Set first-burst provided it was successfully negotiated */ 3247 if (!(phba->hba_flag & HBA_FCOE_MODE) && 3248 vport->cfg_first_burst_size && 3249 scsi_cmnd->sc_data_direction == DMA_TO_DEVICE) { 3250 u32 init_len, total_len; 3251 3252 total_len = be32_to_cpu(fcp_cmnd->fcpDl); 3253 init_len = min(total_len, vport->cfg_first_burst_size); 3254 3255 /* Word 4 & 5 */ 3256 wqe->fcp_iwrite.initial_xfer_len = init_len; 3257 wqe->fcp_iwrite.total_xfer_len = total_len; 3258 } else { 3259 /* Word 4 */ 3260 wqe->fcp_iwrite.total_xfer_len = 3261 be32_to_cpu(fcp_cmnd->fcpDl); 3262 } 3263 3264 /* 3265 * If the OAS driver feature is enabled and the lun is enabled for 3266 * OAS, set the oas iocb related flags. 3267 */ 3268 if ((phba->cfg_fof) && ((struct lpfc_device_data *) 3269 scsi_cmnd->device->hostdata)->oas_enabled) { 3270 lpfc_cmd->cur_iocbq.cmd_flag |= (LPFC_IO_OAS | LPFC_IO_FOF); 3271 lpfc_cmd->cur_iocbq.priority = ((struct lpfc_device_data *) 3272 scsi_cmnd->device->hostdata)->priority; 3273 3274 /* Word 10 */ 3275 bf_set(wqe_oas, &wqe->generic.wqe_com, 1); 3276 bf_set(wqe_ccpe, &wqe->generic.wqe_com, 1); 3277 3278 if (lpfc_cmd->cur_iocbq.priority) 3279 bf_set(wqe_ccp, &wqe->generic.wqe_com, 3280 (lpfc_cmd->cur_iocbq.priority << 1)); 3281 else 3282 bf_set(wqe_ccp, &wqe->generic.wqe_com, 3283 (phba->cfg_XLanePriority << 1)); 3284 } 3285 3286 return 0; 3287 } 3288 3289 /** 3290 * lpfc_bg_scsi_prep_dma_buf_s4 - DMA mapping for scsi buffer to SLI4 IF spec 3291 * @phba: The Hba for which this call is being executed. 3292 * @lpfc_cmd: The scsi buffer which is going to be mapped. 3293 * 3294 * This is the protection/DIF aware version of 3295 * lpfc_scsi_prep_dma_buf(). It may be a good idea to combine the 3296 * two functions eventually, but for now, it's here 3297 * Return codes: 3298 * 2 - Error - Do not retry 3299 * 1 - Error - Retry 3300 * 0 - Success 3301 **/ 3302 static int 3303 lpfc_bg_scsi_prep_dma_buf_s4(struct lpfc_hba *phba, 3304 struct lpfc_io_buf *lpfc_cmd) 3305 { 3306 struct scsi_cmnd *scsi_cmnd = lpfc_cmd->pCmd; 3307 struct fcp_cmnd *fcp_cmnd = lpfc_cmd->fcp_cmnd; 3308 struct sli4_sge *sgl = (struct sli4_sge *)(lpfc_cmd->dma_sgl); 3309 struct lpfc_iocbq *pwqeq = &lpfc_cmd->cur_iocbq; 3310 union lpfc_wqe128 *wqe = &pwqeq->wqe; 3311 uint32_t num_sge = 0; 3312 int datasegcnt, protsegcnt, datadir = scsi_cmnd->sc_data_direction; 3313 int prot_group_type = 0; 3314 int fcpdl; 3315 int ret = 1; 3316 struct lpfc_vport *vport = phba->pport; 3317 3318 /* 3319 * Start the lpfc command prep by bumping the sgl beyond fcp_cmnd 3320 * fcp_rsp regions to the first data sge entry 3321 */ 3322 if (scsi_sg_count(scsi_cmnd)) { 3323 /* 3324 * The driver stores the segment count returned from dma_map_sg 3325 * because this a count of dma-mappings used to map the use_sg 3326 * pages. They are not guaranteed to be the same for those 3327 * architectures that implement an IOMMU. 3328 */ 3329 datasegcnt = dma_map_sg(&phba->pcidev->dev, 3330 scsi_sglist(scsi_cmnd), 3331 scsi_sg_count(scsi_cmnd), datadir); 3332 if (unlikely(!datasegcnt)) 3333 return 1; 3334 3335 sgl += 1; 3336 /* clear the last flag in the fcp_rsp map entry */ 3337 sgl->word2 = le32_to_cpu(sgl->word2); 3338 bf_set(lpfc_sli4_sge_last, sgl, 0); 3339 sgl->word2 = cpu_to_le32(sgl->word2); 3340 3341 sgl += 1; 3342 lpfc_cmd->seg_cnt = datasegcnt; 3343 3344 /* First check if data segment count from SCSI Layer is good */ 3345 if (lpfc_cmd->seg_cnt > phba->cfg_sg_seg_cnt && 3346 !phba->cfg_xpsgl) { 3347 WARN_ON_ONCE(lpfc_cmd->seg_cnt > phba->cfg_sg_seg_cnt); 3348 ret = 2; 3349 goto err; 3350 } 3351 3352 prot_group_type = lpfc_prot_group_type(phba, scsi_cmnd); 3353 3354 switch (prot_group_type) { 3355 case LPFC_PG_TYPE_NO_DIF: 3356 /* Here we need to add a DISEED to the count */ 3357 if (((lpfc_cmd->seg_cnt + 1) > 3358 phba->cfg_total_seg_cnt) && 3359 !phba->cfg_xpsgl) { 3360 ret = 2; 3361 goto err; 3362 } 3363 3364 num_sge = lpfc_bg_setup_sgl(phba, scsi_cmnd, sgl, 3365 datasegcnt, lpfc_cmd); 3366 3367 /* we should have 2 or more entries in buffer list */ 3368 if (num_sge < 2) { 3369 ret = 2; 3370 goto err; 3371 } 3372 break; 3373 3374 case LPFC_PG_TYPE_DIF_BUF: 3375 /* 3376 * This type indicates that protection buffers are 3377 * passed to the driver, so that needs to be prepared 3378 * for DMA 3379 */ 3380 protsegcnt = dma_map_sg(&phba->pcidev->dev, 3381 scsi_prot_sglist(scsi_cmnd), 3382 scsi_prot_sg_count(scsi_cmnd), datadir); 3383 if (unlikely(!protsegcnt)) { 3384 scsi_dma_unmap(scsi_cmnd); 3385 return 1; 3386 } 3387 3388 lpfc_cmd->prot_seg_cnt = protsegcnt; 3389 /* 3390 * There is a minimun of 3 SGEs used for every 3391 * protection data segment. 3392 */ 3393 if (((lpfc_cmd->prot_seg_cnt * 3) > 3394 (phba->cfg_total_seg_cnt - 2)) && 3395 !phba->cfg_xpsgl) { 3396 ret = 2; 3397 goto err; 3398 } 3399 3400 num_sge = lpfc_bg_setup_sgl_prot(phba, scsi_cmnd, sgl, 3401 datasegcnt, protsegcnt, lpfc_cmd); 3402 3403 /* we should have 3 or more entries in buffer list */ 3404 if (num_sge < 3 || 3405 (num_sge > phba->cfg_total_seg_cnt && 3406 !phba->cfg_xpsgl)) { 3407 ret = 2; 3408 goto err; 3409 } 3410 break; 3411 3412 case LPFC_PG_TYPE_INVALID: 3413 default: 3414 scsi_dma_unmap(scsi_cmnd); 3415 lpfc_cmd->seg_cnt = 0; 3416 3417 lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT, 3418 "9083 Unexpected protection group %i\n", 3419 prot_group_type); 3420 return 2; 3421 } 3422 } 3423 3424 switch (scsi_get_prot_op(scsi_cmnd)) { 3425 case SCSI_PROT_WRITE_STRIP: 3426 case SCSI_PROT_READ_STRIP: 3427 lpfc_cmd->cur_iocbq.cmd_flag |= LPFC_IO_DIF_STRIP; 3428 break; 3429 case SCSI_PROT_WRITE_INSERT: 3430 case SCSI_PROT_READ_INSERT: 3431 lpfc_cmd->cur_iocbq.cmd_flag |= LPFC_IO_DIF_INSERT; 3432 break; 3433 case SCSI_PROT_WRITE_PASS: 3434 case SCSI_PROT_READ_PASS: 3435 lpfc_cmd->cur_iocbq.cmd_flag |= LPFC_IO_DIF_PASS; 3436 break; 3437 } 3438 3439 fcpdl = lpfc_bg_scsi_adjust_dl(phba, lpfc_cmd); 3440 fcp_cmnd->fcpDl = be32_to_cpu(fcpdl); 3441 3442 /* Set first-burst provided it was successfully negotiated */ 3443 if (!(phba->hba_flag & HBA_FCOE_MODE) && 3444 vport->cfg_first_burst_size && 3445 scsi_cmnd->sc_data_direction == DMA_TO_DEVICE) { 3446 u32 init_len, total_len; 3447 3448 total_len = be32_to_cpu(fcp_cmnd->fcpDl); 3449 init_len = min(total_len, vport->cfg_first_burst_size); 3450 3451 /* Word 4 & 5 */ 3452 wqe->fcp_iwrite.initial_xfer_len = init_len; 3453 wqe->fcp_iwrite.total_xfer_len = total_len; 3454 } else { 3455 /* Word 4 */ 3456 wqe->fcp_iwrite.total_xfer_len = 3457 be32_to_cpu(fcp_cmnd->fcpDl); 3458 } 3459 3460 /* 3461 * If the OAS driver feature is enabled and the lun is enabled for 3462 * OAS, set the oas iocb related flags. 3463 */ 3464 if ((phba->cfg_fof) && ((struct lpfc_device_data *) 3465 scsi_cmnd->device->hostdata)->oas_enabled) { 3466 lpfc_cmd->cur_iocbq.cmd_flag |= (LPFC_IO_OAS | LPFC_IO_FOF); 3467 3468 /* Word 10 */ 3469 bf_set(wqe_oas, &wqe->generic.wqe_com, 1); 3470 bf_set(wqe_ccpe, &wqe->generic.wqe_com, 1); 3471 bf_set(wqe_ccp, &wqe->generic.wqe_com, 3472 (phba->cfg_XLanePriority << 1)); 3473 } 3474 3475 /* Word 7. DIF Flags */ 3476 if (lpfc_cmd->cur_iocbq.cmd_flag & LPFC_IO_DIF_PASS) 3477 bf_set(wqe_dif, &wqe->generic.wqe_com, LPFC_WQE_DIF_PASSTHRU); 3478 else if (lpfc_cmd->cur_iocbq.cmd_flag & LPFC_IO_DIF_STRIP) 3479 bf_set(wqe_dif, &wqe->generic.wqe_com, LPFC_WQE_DIF_STRIP); 3480 else if (lpfc_cmd->cur_iocbq.cmd_flag & LPFC_IO_DIF_INSERT) 3481 bf_set(wqe_dif, &wqe->generic.wqe_com, LPFC_WQE_DIF_INSERT); 3482 3483 lpfc_cmd->cur_iocbq.cmd_flag &= ~(LPFC_IO_DIF_PASS | 3484 LPFC_IO_DIF_STRIP | LPFC_IO_DIF_INSERT); 3485 3486 return 0; 3487 err: 3488 if (lpfc_cmd->seg_cnt) 3489 scsi_dma_unmap(scsi_cmnd); 3490 if (lpfc_cmd->prot_seg_cnt) 3491 dma_unmap_sg(&phba->pcidev->dev, scsi_prot_sglist(scsi_cmnd), 3492 scsi_prot_sg_count(scsi_cmnd), 3493 scsi_cmnd->sc_data_direction); 3494 3495 lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT, 3496 "9084 Cannot setup S/G List for HBA" 3497 "IO segs %d/%d SGL %d SCSI %d: %d %d\n", 3498 lpfc_cmd->seg_cnt, lpfc_cmd->prot_seg_cnt, 3499 phba->cfg_total_seg_cnt, phba->cfg_sg_seg_cnt, 3500 prot_group_type, num_sge); 3501 3502 lpfc_cmd->seg_cnt = 0; 3503 lpfc_cmd->prot_seg_cnt = 0; 3504 return ret; 3505 } 3506 3507 /** 3508 * lpfc_scsi_prep_dma_buf - Wrapper function for DMA mapping of scsi buffer 3509 * @phba: The Hba for which this call is being executed. 3510 * @lpfc_cmd: The scsi buffer which is going to be mapped. 3511 * 3512 * This routine wraps the actual DMA mapping function pointer from the 3513 * lpfc_hba struct. 3514 * 3515 * Return codes: 3516 * 1 - Error 3517 * 0 - Success 3518 **/ 3519 static inline int 3520 lpfc_scsi_prep_dma_buf(struct lpfc_hba *phba, struct lpfc_io_buf *lpfc_cmd) 3521 { 3522 return phba->lpfc_scsi_prep_dma_buf(phba, lpfc_cmd); 3523 } 3524 3525 /** 3526 * lpfc_bg_scsi_prep_dma_buf - Wrapper function for DMA mapping of scsi buffer 3527 * using BlockGuard. 3528 * @phba: The Hba for which this call is being executed. 3529 * @lpfc_cmd: The scsi buffer which is going to be mapped. 3530 * 3531 * This routine wraps the actual DMA mapping function pointer from the 3532 * lpfc_hba struct. 3533 * 3534 * Return codes: 3535 * 1 - Error 3536 * 0 - Success 3537 **/ 3538 static inline int 3539 lpfc_bg_scsi_prep_dma_buf(struct lpfc_hba *phba, struct lpfc_io_buf *lpfc_cmd) 3540 { 3541 return phba->lpfc_bg_scsi_prep_dma_buf(phba, lpfc_cmd); 3542 } 3543 3544 /** 3545 * lpfc_scsi_prep_cmnd_buf - Wrapper function for IOCB/WQE mapping of scsi 3546 * buffer 3547 * @vport: Pointer to vport object. 3548 * @lpfc_cmd: The scsi buffer which is going to be mapped. 3549 * @tmo: Timeout value for IO 3550 * 3551 * This routine initializes IOCB/WQE data structure from scsi command 3552 * 3553 * Return codes: 3554 * 1 - Error 3555 * 0 - Success 3556 **/ 3557 static inline int 3558 lpfc_scsi_prep_cmnd_buf(struct lpfc_vport *vport, struct lpfc_io_buf *lpfc_cmd, 3559 uint8_t tmo) 3560 { 3561 return vport->phba->lpfc_scsi_prep_cmnd_buf(vport, lpfc_cmd, tmo); 3562 } 3563 3564 /** 3565 * lpfc_send_scsi_error_event - Posts an event when there is SCSI error 3566 * @phba: Pointer to hba context object. 3567 * @vport: Pointer to vport object. 3568 * @lpfc_cmd: Pointer to lpfc scsi command which reported the error. 3569 * @fcpi_parm: FCP Initiator parameter. 3570 * 3571 * This function posts an event when there is a SCSI command reporting 3572 * error from the scsi device. 3573 **/ 3574 static void 3575 lpfc_send_scsi_error_event(struct lpfc_hba *phba, struct lpfc_vport *vport, 3576 struct lpfc_io_buf *lpfc_cmd, uint32_t fcpi_parm) { 3577 struct scsi_cmnd *cmnd = lpfc_cmd->pCmd; 3578 struct fcp_rsp *fcprsp = lpfc_cmd->fcp_rsp; 3579 uint32_t resp_info = fcprsp->rspStatus2; 3580 uint32_t scsi_status = fcprsp->rspStatus3; 3581 struct lpfc_fast_path_event *fast_path_evt = NULL; 3582 struct lpfc_nodelist *pnode = lpfc_cmd->rdata->pnode; 3583 unsigned long flags; 3584 3585 if (!pnode) 3586 return; 3587 3588 /* If there is queuefull or busy condition send a scsi event */ 3589 if ((cmnd->result == SAM_STAT_TASK_SET_FULL) || 3590 (cmnd->result == SAM_STAT_BUSY)) { 3591 fast_path_evt = lpfc_alloc_fast_evt(phba); 3592 if (!fast_path_evt) 3593 return; 3594 fast_path_evt->un.scsi_evt.event_type = 3595 FC_REG_SCSI_EVENT; 3596 fast_path_evt->un.scsi_evt.subcategory = 3597 (cmnd->result == SAM_STAT_TASK_SET_FULL) ? 3598 LPFC_EVENT_QFULL : LPFC_EVENT_DEVBSY; 3599 fast_path_evt->un.scsi_evt.lun = cmnd->device->lun; 3600 memcpy(&fast_path_evt->un.scsi_evt.wwpn, 3601 &pnode->nlp_portname, sizeof(struct lpfc_name)); 3602 memcpy(&fast_path_evt->un.scsi_evt.wwnn, 3603 &pnode->nlp_nodename, sizeof(struct lpfc_name)); 3604 } else if ((resp_info & SNS_LEN_VALID) && fcprsp->rspSnsLen && 3605 ((cmnd->cmnd[0] == READ_10) || (cmnd->cmnd[0] == WRITE_10))) { 3606 fast_path_evt = lpfc_alloc_fast_evt(phba); 3607 if (!fast_path_evt) 3608 return; 3609 fast_path_evt->un.check_cond_evt.scsi_event.event_type = 3610 FC_REG_SCSI_EVENT; 3611 fast_path_evt->un.check_cond_evt.scsi_event.subcategory = 3612 LPFC_EVENT_CHECK_COND; 3613 fast_path_evt->un.check_cond_evt.scsi_event.lun = 3614 cmnd->device->lun; 3615 memcpy(&fast_path_evt->un.check_cond_evt.scsi_event.wwpn, 3616 &pnode->nlp_portname, sizeof(struct lpfc_name)); 3617 memcpy(&fast_path_evt->un.check_cond_evt.scsi_event.wwnn, 3618 &pnode->nlp_nodename, sizeof(struct lpfc_name)); 3619 fast_path_evt->un.check_cond_evt.sense_key = 3620 cmnd->sense_buffer[2] & 0xf; 3621 fast_path_evt->un.check_cond_evt.asc = cmnd->sense_buffer[12]; 3622 fast_path_evt->un.check_cond_evt.ascq = cmnd->sense_buffer[13]; 3623 } else if ((cmnd->sc_data_direction == DMA_FROM_DEVICE) && 3624 fcpi_parm && 3625 ((be32_to_cpu(fcprsp->rspResId) != fcpi_parm) || 3626 ((scsi_status == SAM_STAT_GOOD) && 3627 !(resp_info & (RESID_UNDER | RESID_OVER))))) { 3628 /* 3629 * If status is good or resid does not match with fcp_param and 3630 * there is valid fcpi_parm, then there is a read_check error 3631 */ 3632 fast_path_evt = lpfc_alloc_fast_evt(phba); 3633 if (!fast_path_evt) 3634 return; 3635 fast_path_evt->un.read_check_error.header.event_type = 3636 FC_REG_FABRIC_EVENT; 3637 fast_path_evt->un.read_check_error.header.subcategory = 3638 LPFC_EVENT_FCPRDCHKERR; 3639 memcpy(&fast_path_evt->un.read_check_error.header.wwpn, 3640 &pnode->nlp_portname, sizeof(struct lpfc_name)); 3641 memcpy(&fast_path_evt->un.read_check_error.header.wwnn, 3642 &pnode->nlp_nodename, sizeof(struct lpfc_name)); 3643 fast_path_evt->un.read_check_error.lun = cmnd->device->lun; 3644 fast_path_evt->un.read_check_error.opcode = cmnd->cmnd[0]; 3645 fast_path_evt->un.read_check_error.fcpiparam = 3646 fcpi_parm; 3647 } else 3648 return; 3649 3650 fast_path_evt->vport = vport; 3651 spin_lock_irqsave(&phba->hbalock, flags); 3652 list_add_tail(&fast_path_evt->work_evt.evt_listp, &phba->work_list); 3653 spin_unlock_irqrestore(&phba->hbalock, flags); 3654 lpfc_worker_wake_up(phba); 3655 return; 3656 } 3657 3658 /** 3659 * lpfc_scsi_unprep_dma_buf - Un-map DMA mapping of SG-list for dev 3660 * @phba: The HBA for which this call is being executed. 3661 * @psb: The scsi buffer which is going to be un-mapped. 3662 * 3663 * This routine does DMA un-mapping of scatter gather list of scsi command 3664 * field of @lpfc_cmd for device with SLI-3 interface spec. 3665 **/ 3666 static void 3667 lpfc_scsi_unprep_dma_buf(struct lpfc_hba *phba, struct lpfc_io_buf *psb) 3668 { 3669 /* 3670 * There are only two special cases to consider. (1) the scsi command 3671 * requested scatter-gather usage or (2) the scsi command allocated 3672 * a request buffer, but did not request use_sg. There is a third 3673 * case, but it does not require resource deallocation. 3674 */ 3675 if (psb->seg_cnt > 0) 3676 scsi_dma_unmap(psb->pCmd); 3677 if (psb->prot_seg_cnt > 0) 3678 dma_unmap_sg(&phba->pcidev->dev, scsi_prot_sglist(psb->pCmd), 3679 scsi_prot_sg_count(psb->pCmd), 3680 psb->pCmd->sc_data_direction); 3681 } 3682 3683 /** 3684 * lpfc_unblock_requests - allow further commands to be queued. 3685 * @phba: pointer to phba object 3686 * 3687 * For single vport, just call scsi_unblock_requests on physical port. 3688 * For multiple vports, send scsi_unblock_requests for all the vports. 3689 */ 3690 void 3691 lpfc_unblock_requests(struct lpfc_hba *phba) 3692 { 3693 struct lpfc_vport **vports; 3694 struct Scsi_Host *shost; 3695 int i; 3696 3697 if (phba->sli_rev == LPFC_SLI_REV4 && 3698 !phba->sli4_hba.max_cfg_param.vpi_used) { 3699 shost = lpfc_shost_from_vport(phba->pport); 3700 scsi_unblock_requests(shost); 3701 return; 3702 } 3703 3704 vports = lpfc_create_vport_work_array(phba); 3705 if (vports != NULL) 3706 for (i = 0; i <= phba->max_vports && vports[i] != NULL; i++) { 3707 shost = lpfc_shost_from_vport(vports[i]); 3708 scsi_unblock_requests(shost); 3709 } 3710 lpfc_destroy_vport_work_array(phba, vports); 3711 } 3712 3713 /** 3714 * lpfc_block_requests - prevent further commands from being queued. 3715 * @phba: pointer to phba object 3716 * 3717 * For single vport, just call scsi_block_requests on physical port. 3718 * For multiple vports, send scsi_block_requests for all the vports. 3719 */ 3720 void 3721 lpfc_block_requests(struct lpfc_hba *phba) 3722 { 3723 struct lpfc_vport **vports; 3724 struct Scsi_Host *shost; 3725 int i; 3726 3727 if (atomic_read(&phba->cmf_stop_io)) 3728 return; 3729 3730 if (phba->sli_rev == LPFC_SLI_REV4 && 3731 !phba->sli4_hba.max_cfg_param.vpi_used) { 3732 shost = lpfc_shost_from_vport(phba->pport); 3733 scsi_block_requests(shost); 3734 return; 3735 } 3736 3737 vports = lpfc_create_vport_work_array(phba); 3738 if (vports != NULL) 3739 for (i = 0; i <= phba->max_vports && vports[i] != NULL; i++) { 3740 shost = lpfc_shost_from_vport(vports[i]); 3741 scsi_block_requests(shost); 3742 } 3743 lpfc_destroy_vport_work_array(phba, vports); 3744 } 3745 3746 /** 3747 * lpfc_update_cmf_cmpl - Adjust CMF counters for IO completion 3748 * @phba: The HBA for which this call is being executed. 3749 * @time: The latency of the IO that completed (in ns) 3750 * @size: The size of the IO that completed 3751 * @shost: SCSI host the IO completed on (NULL for a NVME IO) 3752 * 3753 * The routine adjusts the various Burst and Bandwidth counters used in 3754 * Congestion management and E2E. If time is set to LPFC_CGN_NOT_SENT, 3755 * that means the IO was never issued to the HBA, so this routine is 3756 * just being called to cleanup the counter from a previous 3757 * lpfc_update_cmf_cmd call. 3758 */ 3759 int 3760 lpfc_update_cmf_cmpl(struct lpfc_hba *phba, 3761 uint64_t time, uint32_t size, struct Scsi_Host *shost) 3762 { 3763 struct lpfc_cgn_stat *cgs; 3764 3765 if (time != LPFC_CGN_NOT_SENT) { 3766 /* lat is ns coming in, save latency in us */ 3767 if (time < 1000) 3768 time = 1; 3769 else 3770 time = div_u64(time + 500, 1000); /* round it */ 3771 3772 cgs = per_cpu_ptr(phba->cmf_stat, raw_smp_processor_id()); 3773 atomic64_add(size, &cgs->rcv_bytes); 3774 atomic64_add(time, &cgs->rx_latency); 3775 atomic_inc(&cgs->rx_io_cnt); 3776 } 3777 return 0; 3778 } 3779 3780 /** 3781 * lpfc_update_cmf_cmd - Adjust CMF counters for IO submission 3782 * @phba: The HBA for which this call is being executed. 3783 * @size: The size of the IO that will be issued 3784 * 3785 * The routine adjusts the various Burst and Bandwidth counters used in 3786 * Congestion management and E2E. 3787 */ 3788 int 3789 lpfc_update_cmf_cmd(struct lpfc_hba *phba, uint32_t size) 3790 { 3791 uint64_t total; 3792 struct lpfc_cgn_stat *cgs; 3793 int cpu; 3794 3795 /* At this point we are either LPFC_CFG_MANAGED or LPFC_CFG_MONITOR */ 3796 if (phba->cmf_active_mode == LPFC_CFG_MANAGED && 3797 phba->cmf_max_bytes_per_interval) { 3798 total = 0; 3799 for_each_present_cpu(cpu) { 3800 cgs = per_cpu_ptr(phba->cmf_stat, cpu); 3801 total += atomic64_read(&cgs->total_bytes); 3802 } 3803 if (total >= phba->cmf_max_bytes_per_interval) { 3804 if (!atomic_xchg(&phba->cmf_bw_wait, 1)) { 3805 lpfc_block_requests(phba); 3806 phba->cmf_last_ts = 3807 lpfc_calc_cmf_latency(phba); 3808 } 3809 atomic_inc(&phba->cmf_busy); 3810 return -EBUSY; 3811 } 3812 if (size > atomic_read(&phba->rx_max_read_cnt)) 3813 atomic_set(&phba->rx_max_read_cnt, size); 3814 } 3815 3816 cgs = per_cpu_ptr(phba->cmf_stat, raw_smp_processor_id()); 3817 atomic64_add(size, &cgs->total_bytes); 3818 return 0; 3819 } 3820 3821 /** 3822 * lpfc_handle_fcp_err - FCP response handler 3823 * @vport: The virtual port for which this call is being executed. 3824 * @lpfc_cmd: Pointer to lpfc_io_buf data structure. 3825 * @fcpi_parm: FCP Initiator parameter. 3826 * 3827 * This routine is called to process response IOCB with status field 3828 * IOSTAT_FCP_RSP_ERROR. This routine sets result field of scsi command 3829 * based upon SCSI and FCP error. 3830 **/ 3831 static void 3832 lpfc_handle_fcp_err(struct lpfc_vport *vport, struct lpfc_io_buf *lpfc_cmd, 3833 uint32_t fcpi_parm) 3834 { 3835 struct scsi_cmnd *cmnd = lpfc_cmd->pCmd; 3836 struct fcp_cmnd *fcpcmd = lpfc_cmd->fcp_cmnd; 3837 struct fcp_rsp *fcprsp = lpfc_cmd->fcp_rsp; 3838 uint32_t resp_info = fcprsp->rspStatus2; 3839 uint32_t scsi_status = fcprsp->rspStatus3; 3840 uint32_t *lp; 3841 uint32_t host_status = DID_OK; 3842 uint32_t rsplen = 0; 3843 uint32_t fcpDl; 3844 uint32_t logit = LOG_FCP | LOG_FCP_ERROR; 3845 3846 3847 /* 3848 * If this is a task management command, there is no 3849 * scsi packet associated with this lpfc_cmd. The driver 3850 * consumes it. 3851 */ 3852 if (fcpcmd->fcpCntl2) { 3853 scsi_status = 0; 3854 goto out; 3855 } 3856 3857 if (resp_info & RSP_LEN_VALID) { 3858 rsplen = be32_to_cpu(fcprsp->rspRspLen); 3859 if (rsplen != 0 && rsplen != 4 && rsplen != 8) { 3860 lpfc_printf_vlog(vport, KERN_ERR, LOG_TRACE_EVENT, 3861 "2719 Invalid response length: " 3862 "tgt x%x lun x%llx cmnd x%x rsplen " 3863 "x%x\n", cmnd->device->id, 3864 cmnd->device->lun, cmnd->cmnd[0], 3865 rsplen); 3866 host_status = DID_ERROR; 3867 goto out; 3868 } 3869 if (fcprsp->rspInfo3 != RSP_NO_FAILURE) { 3870 lpfc_printf_vlog(vport, KERN_ERR, LOG_TRACE_EVENT, 3871 "2757 Protocol failure detected during " 3872 "processing of FCP I/O op: " 3873 "tgt x%x lun x%llx cmnd x%x rspInfo3 x%x\n", 3874 cmnd->device->id, 3875 cmnd->device->lun, cmnd->cmnd[0], 3876 fcprsp->rspInfo3); 3877 host_status = DID_ERROR; 3878 goto out; 3879 } 3880 } 3881 3882 if ((resp_info & SNS_LEN_VALID) && fcprsp->rspSnsLen) { 3883 uint32_t snslen = be32_to_cpu(fcprsp->rspSnsLen); 3884 if (snslen > SCSI_SENSE_BUFFERSIZE) 3885 snslen = SCSI_SENSE_BUFFERSIZE; 3886 3887 if (resp_info & RSP_LEN_VALID) 3888 rsplen = be32_to_cpu(fcprsp->rspRspLen); 3889 memcpy(cmnd->sense_buffer, &fcprsp->rspInfo0 + rsplen, snslen); 3890 } 3891 lp = (uint32_t *)cmnd->sense_buffer; 3892 3893 /* special handling for under run conditions */ 3894 if (!scsi_status && (resp_info & RESID_UNDER)) { 3895 /* don't log under runs if fcp set... */ 3896 if (vport->cfg_log_verbose & LOG_FCP) 3897 logit = LOG_FCP_ERROR; 3898 /* unless operator says so */ 3899 if (vport->cfg_log_verbose & LOG_FCP_UNDER) 3900 logit = LOG_FCP_UNDER; 3901 } 3902 3903 lpfc_printf_vlog(vport, KERN_WARNING, logit, 3904 "9024 FCP command x%x failed: x%x SNS x%x x%x " 3905 "Data: x%x x%x x%x x%x x%x\n", 3906 cmnd->cmnd[0], scsi_status, 3907 be32_to_cpu(*lp), be32_to_cpu(*(lp + 3)), resp_info, 3908 be32_to_cpu(fcprsp->rspResId), 3909 be32_to_cpu(fcprsp->rspSnsLen), 3910 be32_to_cpu(fcprsp->rspRspLen), 3911 fcprsp->rspInfo3); 3912 3913 scsi_set_resid(cmnd, 0); 3914 fcpDl = be32_to_cpu(fcpcmd->fcpDl); 3915 if (resp_info & RESID_UNDER) { 3916 scsi_set_resid(cmnd, be32_to_cpu(fcprsp->rspResId)); 3917 3918 lpfc_printf_vlog(vport, KERN_INFO, LOG_FCP_UNDER, 3919 "9025 FCP Underrun, expected %d, " 3920 "residual %d Data: x%x x%x x%x\n", 3921 fcpDl, 3922 scsi_get_resid(cmnd), fcpi_parm, cmnd->cmnd[0], 3923 cmnd->underflow); 3924 3925 /* 3926 * If there is an under run, check if under run reported by 3927 * storage array is same as the under run reported by HBA. 3928 * If this is not same, there is a dropped frame. 3929 */ 3930 if (fcpi_parm && (scsi_get_resid(cmnd) != fcpi_parm)) { 3931 lpfc_printf_vlog(vport, KERN_WARNING, 3932 LOG_FCP | LOG_FCP_ERROR, 3933 "9026 FCP Read Check Error " 3934 "and Underrun Data: x%x x%x x%x x%x\n", 3935 fcpDl, 3936 scsi_get_resid(cmnd), fcpi_parm, 3937 cmnd->cmnd[0]); 3938 scsi_set_resid(cmnd, scsi_bufflen(cmnd)); 3939 host_status = DID_ERROR; 3940 } 3941 /* 3942 * The cmnd->underflow is the minimum number of bytes that must 3943 * be transferred for this command. Provided a sense condition 3944 * is not present, make sure the actual amount transferred is at 3945 * least the underflow value or fail. 3946 */ 3947 if (!(resp_info & SNS_LEN_VALID) && 3948 (scsi_status == SAM_STAT_GOOD) && 3949 (scsi_bufflen(cmnd) - scsi_get_resid(cmnd) 3950 < cmnd->underflow)) { 3951 lpfc_printf_vlog(vport, KERN_INFO, LOG_FCP, 3952 "9027 FCP command x%x residual " 3953 "underrun converted to error " 3954 "Data: x%x x%x x%x\n", 3955 cmnd->cmnd[0], scsi_bufflen(cmnd), 3956 scsi_get_resid(cmnd), cmnd->underflow); 3957 host_status = DID_ERROR; 3958 } 3959 } else if (resp_info & RESID_OVER) { 3960 lpfc_printf_vlog(vport, KERN_WARNING, LOG_FCP, 3961 "9028 FCP command x%x residual overrun error. " 3962 "Data: x%x x%x\n", cmnd->cmnd[0], 3963 scsi_bufflen(cmnd), scsi_get_resid(cmnd)); 3964 host_status = DID_ERROR; 3965 3966 /* 3967 * Check SLI validation that all the transfer was actually done 3968 * (fcpi_parm should be zero). Apply check only to reads. 3969 */ 3970 } else if (fcpi_parm) { 3971 lpfc_printf_vlog(vport, KERN_WARNING, LOG_FCP | LOG_FCP_ERROR, 3972 "9029 FCP %s Check Error Data: " 3973 "x%x x%x x%x x%x x%x\n", 3974 ((cmnd->sc_data_direction == DMA_FROM_DEVICE) ? 3975 "Read" : "Write"), 3976 fcpDl, be32_to_cpu(fcprsp->rspResId), 3977 fcpi_parm, cmnd->cmnd[0], scsi_status); 3978 3979 /* There is some issue with the LPe12000 that causes it 3980 * to miscalculate the fcpi_parm and falsely trip this 3981 * recovery logic. Detect this case and don't error when true. 3982 */ 3983 if (fcpi_parm > fcpDl) 3984 goto out; 3985 3986 switch (scsi_status) { 3987 case SAM_STAT_GOOD: 3988 case SAM_STAT_CHECK_CONDITION: 3989 /* Fabric dropped a data frame. Fail any successful 3990 * command in which we detected dropped frames. 3991 * A status of good or some check conditions could 3992 * be considered a successful command. 3993 */ 3994 host_status = DID_ERROR; 3995 break; 3996 } 3997 scsi_set_resid(cmnd, scsi_bufflen(cmnd)); 3998 } 3999 4000 out: 4001 cmnd->result = host_status << 16 | scsi_status; 4002 lpfc_send_scsi_error_event(vport->phba, vport, lpfc_cmd, fcpi_parm); 4003 } 4004 4005 /** 4006 * lpfc_fcp_io_cmd_wqe_cmpl - Complete a FCP IO 4007 * @phba: The hba for which this call is being executed. 4008 * @pwqeIn: The command WQE for the scsi cmnd. 4009 * @pwqeOut: Pointer to driver response WQE object. 4010 * 4011 * This routine assigns scsi command result by looking into response WQE 4012 * status field appropriately. This routine handles QUEUE FULL condition as 4013 * well by ramping down device queue depth. 4014 **/ 4015 static void 4016 lpfc_fcp_io_cmd_wqe_cmpl(struct lpfc_hba *phba, struct lpfc_iocbq *pwqeIn, 4017 struct lpfc_iocbq *pwqeOut) 4018 { 4019 struct lpfc_io_buf *lpfc_cmd = pwqeIn->io_buf; 4020 struct lpfc_wcqe_complete *wcqe = &pwqeOut->wcqe_cmpl; 4021 struct lpfc_vport *vport = pwqeIn->vport; 4022 struct lpfc_rport_data *rdata; 4023 struct lpfc_nodelist *ndlp; 4024 struct scsi_cmnd *cmd; 4025 unsigned long flags; 4026 struct lpfc_fast_path_event *fast_path_evt; 4027 struct Scsi_Host *shost; 4028 u32 logit = LOG_FCP; 4029 u32 status, idx; 4030 u32 lat; 4031 u8 wait_xb_clr = 0; 4032 4033 /* Sanity check on return of outstanding command */ 4034 if (!lpfc_cmd) { 4035 lpfc_printf_vlog(vport, KERN_ERR, LOG_TRACE_EVENT, 4036 "9032 Null lpfc_cmd pointer. No " 4037 "release, skip completion\n"); 4038 return; 4039 } 4040 4041 rdata = lpfc_cmd->rdata; 4042 ndlp = rdata->pnode; 4043 4044 /* Sanity check on return of outstanding command */ 4045 cmd = lpfc_cmd->pCmd; 4046 if (!cmd) { 4047 lpfc_printf_vlog(vport, KERN_ERR, LOG_TRACE_EVENT, 4048 "9042 I/O completion: Not an active IO\n"); 4049 lpfc_release_scsi_buf(phba, lpfc_cmd); 4050 return; 4051 } 4052 /* Guard against abort handler being called at same time */ 4053 spin_lock(&lpfc_cmd->buf_lock); 4054 idx = lpfc_cmd->cur_iocbq.hba_wqidx; 4055 if (phba->sli4_hba.hdwq) 4056 phba->sli4_hba.hdwq[idx].scsi_cstat.io_cmpls++; 4057 4058 #ifdef CONFIG_SCSI_LPFC_DEBUG_FS 4059 if (unlikely(phba->hdwqstat_on & LPFC_CHECK_SCSI_IO)) 4060 this_cpu_inc(phba->sli4_hba.c_stat->cmpl_io); 4061 #endif 4062 shost = cmd->device->host; 4063 4064 status = bf_get(lpfc_wcqe_c_status, wcqe); 4065 lpfc_cmd->status = (status & LPFC_IOCB_STATUS_MASK); 4066 lpfc_cmd->result = (wcqe->parameter & IOERR_PARAM_MASK); 4067 4068 lpfc_cmd->flags &= ~LPFC_SBUF_XBUSY; 4069 if (bf_get(lpfc_wcqe_c_xb, wcqe)) { 4070 lpfc_cmd->flags |= LPFC_SBUF_XBUSY; 4071 if (phba->cfg_fcp_wait_abts_rsp) 4072 wait_xb_clr = 1; 4073 } 4074 4075 #ifdef CONFIG_SCSI_LPFC_DEBUG_FS 4076 if (lpfc_cmd->prot_data_type) { 4077 struct scsi_dif_tuple *src = NULL; 4078 4079 src = (struct scsi_dif_tuple *)lpfc_cmd->prot_data_segment; 4080 /* 4081 * Used to restore any changes to protection 4082 * data for error injection. 4083 */ 4084 switch (lpfc_cmd->prot_data_type) { 4085 case LPFC_INJERR_REFTAG: 4086 src->ref_tag = 4087 lpfc_cmd->prot_data; 4088 break; 4089 case LPFC_INJERR_APPTAG: 4090 src->app_tag = 4091 (uint16_t)lpfc_cmd->prot_data; 4092 break; 4093 case LPFC_INJERR_GUARD: 4094 src->guard_tag = 4095 (uint16_t)lpfc_cmd->prot_data; 4096 break; 4097 default: 4098 break; 4099 } 4100 4101 lpfc_cmd->prot_data = 0; 4102 lpfc_cmd->prot_data_type = 0; 4103 lpfc_cmd->prot_data_segment = NULL; 4104 } 4105 #endif 4106 if (unlikely(lpfc_cmd->status)) { 4107 if (lpfc_cmd->status == IOSTAT_LOCAL_REJECT && 4108 (lpfc_cmd->result & IOERR_DRVR_MASK)) 4109 lpfc_cmd->status = IOSTAT_DRIVER_REJECT; 4110 else if (lpfc_cmd->status >= IOSTAT_CNT) 4111 lpfc_cmd->status = IOSTAT_DEFAULT; 4112 if (lpfc_cmd->status == IOSTAT_FCP_RSP_ERROR && 4113 !lpfc_cmd->fcp_rsp->rspStatus3 && 4114 (lpfc_cmd->fcp_rsp->rspStatus2 & RESID_UNDER) && 4115 !(vport->cfg_log_verbose & LOG_FCP_UNDER)) 4116 logit = 0; 4117 else 4118 logit = LOG_FCP | LOG_FCP_UNDER; 4119 lpfc_printf_vlog(vport, KERN_WARNING, logit, 4120 "9034 FCP cmd x%x failed <%d/%lld> " 4121 "status: x%x result: x%x " 4122 "sid: x%x did: x%x oxid: x%x " 4123 "Data: x%x x%x x%x\n", 4124 cmd->cmnd[0], 4125 cmd->device ? cmd->device->id : 0xffff, 4126 cmd->device ? cmd->device->lun : 0xffff, 4127 lpfc_cmd->status, lpfc_cmd->result, 4128 vport->fc_myDID, 4129 (ndlp) ? ndlp->nlp_DID : 0, 4130 lpfc_cmd->cur_iocbq.sli4_xritag, 4131 wcqe->parameter, wcqe->total_data_placed, 4132 lpfc_cmd->cur_iocbq.iotag); 4133 } 4134 4135 switch (lpfc_cmd->status) { 4136 case IOSTAT_SUCCESS: 4137 cmd->result = DID_OK << 16; 4138 break; 4139 case IOSTAT_FCP_RSP_ERROR: 4140 lpfc_handle_fcp_err(vport, lpfc_cmd, 4141 pwqeIn->wqe.fcp_iread.total_xfer_len - 4142 wcqe->total_data_placed); 4143 break; 4144 case IOSTAT_NPORT_BSY: 4145 case IOSTAT_FABRIC_BSY: 4146 cmd->result = DID_TRANSPORT_DISRUPTED << 16; 4147 fast_path_evt = lpfc_alloc_fast_evt(phba); 4148 if (!fast_path_evt) 4149 break; 4150 fast_path_evt->un.fabric_evt.event_type = 4151 FC_REG_FABRIC_EVENT; 4152 fast_path_evt->un.fabric_evt.subcategory = 4153 (lpfc_cmd->status == IOSTAT_NPORT_BSY) ? 4154 LPFC_EVENT_PORT_BUSY : LPFC_EVENT_FABRIC_BUSY; 4155 if (ndlp) { 4156 memcpy(&fast_path_evt->un.fabric_evt.wwpn, 4157 &ndlp->nlp_portname, 4158 sizeof(struct lpfc_name)); 4159 memcpy(&fast_path_evt->un.fabric_evt.wwnn, 4160 &ndlp->nlp_nodename, 4161 sizeof(struct lpfc_name)); 4162 } 4163 fast_path_evt->vport = vport; 4164 fast_path_evt->work_evt.evt = 4165 LPFC_EVT_FASTPATH_MGMT_EVT; 4166 spin_lock_irqsave(&phba->hbalock, flags); 4167 list_add_tail(&fast_path_evt->work_evt.evt_listp, 4168 &phba->work_list); 4169 spin_unlock_irqrestore(&phba->hbalock, flags); 4170 lpfc_worker_wake_up(phba); 4171 lpfc_printf_vlog(vport, KERN_WARNING, logit, 4172 "9035 Fabric/Node busy FCP cmd x%x failed" 4173 " <%d/%lld> " 4174 "status: x%x result: x%x " 4175 "sid: x%x did: x%x oxid: x%x " 4176 "Data: x%x x%x x%x\n", 4177 cmd->cmnd[0], 4178 cmd->device ? cmd->device->id : 0xffff, 4179 cmd->device ? cmd->device->lun : 0xffff, 4180 lpfc_cmd->status, lpfc_cmd->result, 4181 vport->fc_myDID, 4182 (ndlp) ? ndlp->nlp_DID : 0, 4183 lpfc_cmd->cur_iocbq.sli4_xritag, 4184 wcqe->parameter, 4185 wcqe->total_data_placed, 4186 lpfc_cmd->cur_iocbq.iocb.ulpIoTag); 4187 break; 4188 case IOSTAT_REMOTE_STOP: 4189 if (ndlp) { 4190 /* This I/O was aborted by the target, we don't 4191 * know the rxid and because we did not send the 4192 * ABTS we cannot generate and RRQ. 4193 */ 4194 lpfc_set_rrq_active(phba, ndlp, 4195 lpfc_cmd->cur_iocbq.sli4_lxritag, 4196 0, 0); 4197 } 4198 fallthrough; 4199 case IOSTAT_LOCAL_REJECT: 4200 if (lpfc_cmd->result & IOERR_DRVR_MASK) 4201 lpfc_cmd->status = IOSTAT_DRIVER_REJECT; 4202 if (lpfc_cmd->result == IOERR_ELXSEC_KEY_UNWRAP_ERROR || 4203 lpfc_cmd->result == 4204 IOERR_ELXSEC_KEY_UNWRAP_COMPARE_ERROR || 4205 lpfc_cmd->result == IOERR_ELXSEC_CRYPTO_ERROR || 4206 lpfc_cmd->result == 4207 IOERR_ELXSEC_CRYPTO_COMPARE_ERROR) { 4208 cmd->result = DID_NO_CONNECT << 16; 4209 break; 4210 } 4211 if (lpfc_cmd->result == IOERR_INVALID_RPI || 4212 lpfc_cmd->result == IOERR_LINK_DOWN || 4213 lpfc_cmd->result == IOERR_NO_RESOURCES || 4214 lpfc_cmd->result == IOERR_ABORT_REQUESTED || 4215 lpfc_cmd->result == IOERR_RPI_SUSPENDED || 4216 lpfc_cmd->result == IOERR_SLER_CMD_RCV_FAILURE) { 4217 cmd->result = DID_TRANSPORT_DISRUPTED << 16; 4218 break; 4219 } 4220 if ((lpfc_cmd->result == IOERR_RX_DMA_FAILED || 4221 lpfc_cmd->result == IOERR_TX_DMA_FAILED) && 4222 status == CQE_STATUS_DI_ERROR) { 4223 if (scsi_get_prot_op(cmd) != 4224 SCSI_PROT_NORMAL) { 4225 /* 4226 * This is a response for a BG enabled 4227 * cmd. Parse BG error 4228 */ 4229 lpfc_parse_bg_err(phba, lpfc_cmd, pwqeOut); 4230 break; 4231 } else { 4232 lpfc_printf_vlog(vport, KERN_WARNING, 4233 LOG_BG, 4234 "9040 non-zero BGSTAT " 4235 "on unprotected cmd\n"); 4236 } 4237 } 4238 lpfc_printf_vlog(vport, KERN_WARNING, logit, 4239 "9036 Local Reject FCP cmd x%x failed" 4240 " <%d/%lld> " 4241 "status: x%x result: x%x " 4242 "sid: x%x did: x%x oxid: x%x " 4243 "Data: x%x x%x x%x\n", 4244 cmd->cmnd[0], 4245 cmd->device ? cmd->device->id : 0xffff, 4246 cmd->device ? cmd->device->lun : 0xffff, 4247 lpfc_cmd->status, lpfc_cmd->result, 4248 vport->fc_myDID, 4249 (ndlp) ? ndlp->nlp_DID : 0, 4250 lpfc_cmd->cur_iocbq.sli4_xritag, 4251 wcqe->parameter, 4252 wcqe->total_data_placed, 4253 lpfc_cmd->cur_iocbq.iocb.ulpIoTag); 4254 fallthrough; 4255 default: 4256 if (lpfc_cmd->status >= IOSTAT_CNT) 4257 lpfc_cmd->status = IOSTAT_DEFAULT; 4258 cmd->result = DID_ERROR << 16; 4259 lpfc_printf_vlog(vport, KERN_INFO, LOG_NVME_IOERR, 4260 "9037 FCP Completion Error: xri %x " 4261 "status x%x result x%x [x%x] " 4262 "placed x%x\n", 4263 lpfc_cmd->cur_iocbq.sli4_xritag, 4264 lpfc_cmd->status, lpfc_cmd->result, 4265 wcqe->parameter, 4266 wcqe->total_data_placed); 4267 } 4268 if (cmd->result || lpfc_cmd->fcp_rsp->rspSnsLen) { 4269 u32 *lp = (u32 *)cmd->sense_buffer; 4270 4271 lpfc_printf_vlog(vport, KERN_INFO, LOG_FCP, 4272 "9039 Iodone <%d/%llu> cmd x%px, error " 4273 "x%x SNS x%x x%x LBA x%llx Data: x%x x%x\n", 4274 cmd->device->id, cmd->device->lun, cmd, 4275 cmd->result, *lp, *(lp + 3), 4276 (u64)scsi_get_lba(cmd), 4277 cmd->retries, scsi_get_resid(cmd)); 4278 } 4279 4280 if (vport->cfg_max_scsicmpl_time && 4281 time_after(jiffies, lpfc_cmd->start_time + 4282 msecs_to_jiffies(vport->cfg_max_scsicmpl_time))) { 4283 spin_lock_irqsave(shost->host_lock, flags); 4284 if (ndlp) { 4285 if (ndlp->cmd_qdepth > 4286 atomic_read(&ndlp->cmd_pending) && 4287 (atomic_read(&ndlp->cmd_pending) > 4288 LPFC_MIN_TGT_QDEPTH) && 4289 (cmd->cmnd[0] == READ_10 || 4290 cmd->cmnd[0] == WRITE_10)) 4291 ndlp->cmd_qdepth = 4292 atomic_read(&ndlp->cmd_pending); 4293 4294 ndlp->last_change_time = jiffies; 4295 } 4296 spin_unlock_irqrestore(shost->host_lock, flags); 4297 } 4298 lpfc_scsi_unprep_dma_buf(phba, lpfc_cmd); 4299 4300 #ifdef CONFIG_SCSI_LPFC_DEBUG_FS 4301 if (lpfc_cmd->ts_cmd_start) { 4302 lpfc_cmd->ts_isr_cmpl = lpfc_cmd->cur_iocbq.isr_timestamp; 4303 lpfc_cmd->ts_data_io = ktime_get_ns(); 4304 phba->ktime_last_cmd = lpfc_cmd->ts_data_io; 4305 lpfc_io_ktime(phba, lpfc_cmd); 4306 } 4307 #endif 4308 if (likely(!wait_xb_clr)) 4309 lpfc_cmd->pCmd = NULL; 4310 spin_unlock(&lpfc_cmd->buf_lock); 4311 4312 /* Check if IO qualified for CMF */ 4313 if (phba->cmf_active_mode != LPFC_CFG_OFF && 4314 cmd->sc_data_direction == DMA_FROM_DEVICE && 4315 (scsi_sg_count(cmd))) { 4316 /* Used when calculating average latency */ 4317 lat = ktime_get_ns() - lpfc_cmd->rx_cmd_start; 4318 lpfc_update_cmf_cmpl(phba, lat, scsi_bufflen(cmd), shost); 4319 } 4320 4321 if (wait_xb_clr) 4322 goto out; 4323 4324 /* The sdev is not guaranteed to be valid post scsi_done upcall. */ 4325 scsi_done(cmd); 4326 4327 /* 4328 * If there is an abort thread waiting for command completion 4329 * wake up the thread. 4330 */ 4331 spin_lock(&lpfc_cmd->buf_lock); 4332 lpfc_cmd->cur_iocbq.cmd_flag &= ~LPFC_DRIVER_ABORTED; 4333 if (lpfc_cmd->waitq) 4334 wake_up(lpfc_cmd->waitq); 4335 spin_unlock(&lpfc_cmd->buf_lock); 4336 out: 4337 lpfc_release_scsi_buf(phba, lpfc_cmd); 4338 } 4339 4340 /** 4341 * lpfc_scsi_cmd_iocb_cmpl - Scsi cmnd IOCB completion routine 4342 * @phba: The Hba for which this call is being executed. 4343 * @pIocbIn: The command IOCBQ for the scsi cmnd. 4344 * @pIocbOut: The response IOCBQ for the scsi cmnd. 4345 * 4346 * This routine assigns scsi command result by looking into response IOCB 4347 * status field appropriately. This routine handles QUEUE FULL condition as 4348 * well by ramping down device queue depth. 4349 **/ 4350 static void 4351 lpfc_scsi_cmd_iocb_cmpl(struct lpfc_hba *phba, struct lpfc_iocbq *pIocbIn, 4352 struct lpfc_iocbq *pIocbOut) 4353 { 4354 struct lpfc_io_buf *lpfc_cmd = 4355 (struct lpfc_io_buf *) pIocbIn->io_buf; 4356 struct lpfc_vport *vport = pIocbIn->vport; 4357 struct lpfc_rport_data *rdata = lpfc_cmd->rdata; 4358 struct lpfc_nodelist *pnode = rdata->pnode; 4359 struct scsi_cmnd *cmd; 4360 unsigned long flags; 4361 struct lpfc_fast_path_event *fast_path_evt; 4362 struct Scsi_Host *shost; 4363 int idx; 4364 uint32_t logit = LOG_FCP; 4365 4366 /* Guard against abort handler being called at same time */ 4367 spin_lock(&lpfc_cmd->buf_lock); 4368 4369 /* Sanity check on return of outstanding command */ 4370 cmd = lpfc_cmd->pCmd; 4371 if (!cmd || !phba) { 4372 lpfc_printf_vlog(vport, KERN_ERR, LOG_TRACE_EVENT, 4373 "2621 IO completion: Not an active IO\n"); 4374 spin_unlock(&lpfc_cmd->buf_lock); 4375 return; 4376 } 4377 4378 idx = lpfc_cmd->cur_iocbq.hba_wqidx; 4379 if (phba->sli4_hba.hdwq) 4380 phba->sli4_hba.hdwq[idx].scsi_cstat.io_cmpls++; 4381 4382 #ifdef CONFIG_SCSI_LPFC_DEBUG_FS 4383 if (unlikely(phba->hdwqstat_on & LPFC_CHECK_SCSI_IO)) 4384 this_cpu_inc(phba->sli4_hba.c_stat->cmpl_io); 4385 #endif 4386 shost = cmd->device->host; 4387 4388 lpfc_cmd->result = (pIocbOut->iocb.un.ulpWord[4] & IOERR_PARAM_MASK); 4389 lpfc_cmd->status = pIocbOut->iocb.ulpStatus; 4390 /* pick up SLI4 exchange busy status from HBA */ 4391 lpfc_cmd->flags &= ~LPFC_SBUF_XBUSY; 4392 if (pIocbOut->cmd_flag & LPFC_EXCHANGE_BUSY) 4393 lpfc_cmd->flags |= LPFC_SBUF_XBUSY; 4394 4395 #ifdef CONFIG_SCSI_LPFC_DEBUG_FS 4396 if (lpfc_cmd->prot_data_type) { 4397 struct scsi_dif_tuple *src = NULL; 4398 4399 src = (struct scsi_dif_tuple *)lpfc_cmd->prot_data_segment; 4400 /* 4401 * Used to restore any changes to protection 4402 * data for error injection. 4403 */ 4404 switch (lpfc_cmd->prot_data_type) { 4405 case LPFC_INJERR_REFTAG: 4406 src->ref_tag = 4407 lpfc_cmd->prot_data; 4408 break; 4409 case LPFC_INJERR_APPTAG: 4410 src->app_tag = 4411 (uint16_t)lpfc_cmd->prot_data; 4412 break; 4413 case LPFC_INJERR_GUARD: 4414 src->guard_tag = 4415 (uint16_t)lpfc_cmd->prot_data; 4416 break; 4417 default: 4418 break; 4419 } 4420 4421 lpfc_cmd->prot_data = 0; 4422 lpfc_cmd->prot_data_type = 0; 4423 lpfc_cmd->prot_data_segment = NULL; 4424 } 4425 #endif 4426 4427 if (unlikely(lpfc_cmd->status)) { 4428 if (lpfc_cmd->status == IOSTAT_LOCAL_REJECT && 4429 (lpfc_cmd->result & IOERR_DRVR_MASK)) 4430 lpfc_cmd->status = IOSTAT_DRIVER_REJECT; 4431 else if (lpfc_cmd->status >= IOSTAT_CNT) 4432 lpfc_cmd->status = IOSTAT_DEFAULT; 4433 if (lpfc_cmd->status == IOSTAT_FCP_RSP_ERROR && 4434 !lpfc_cmd->fcp_rsp->rspStatus3 && 4435 (lpfc_cmd->fcp_rsp->rspStatus2 & RESID_UNDER) && 4436 !(vport->cfg_log_verbose & LOG_FCP_UNDER)) 4437 logit = 0; 4438 else 4439 logit = LOG_FCP | LOG_FCP_UNDER; 4440 lpfc_printf_vlog(vport, KERN_WARNING, logit, 4441 "9030 FCP cmd x%x failed <%d/%lld> " 4442 "status: x%x result: x%x " 4443 "sid: x%x did: x%x oxid: x%x " 4444 "Data: x%x x%x\n", 4445 cmd->cmnd[0], 4446 cmd->device ? cmd->device->id : 0xffff, 4447 cmd->device ? cmd->device->lun : 0xffff, 4448 lpfc_cmd->status, lpfc_cmd->result, 4449 vport->fc_myDID, 4450 (pnode) ? pnode->nlp_DID : 0, 4451 phba->sli_rev == LPFC_SLI_REV4 ? 4452 lpfc_cmd->cur_iocbq.sli4_xritag : 0xffff, 4453 pIocbOut->iocb.ulpContext, 4454 lpfc_cmd->cur_iocbq.iocb.ulpIoTag); 4455 4456 switch (lpfc_cmd->status) { 4457 case IOSTAT_FCP_RSP_ERROR: 4458 /* Call FCP RSP handler to determine result */ 4459 lpfc_handle_fcp_err(vport, lpfc_cmd, 4460 pIocbOut->iocb.un.fcpi.fcpi_parm); 4461 break; 4462 case IOSTAT_NPORT_BSY: 4463 case IOSTAT_FABRIC_BSY: 4464 cmd->result = DID_TRANSPORT_DISRUPTED << 16; 4465 fast_path_evt = lpfc_alloc_fast_evt(phba); 4466 if (!fast_path_evt) 4467 break; 4468 fast_path_evt->un.fabric_evt.event_type = 4469 FC_REG_FABRIC_EVENT; 4470 fast_path_evt->un.fabric_evt.subcategory = 4471 (lpfc_cmd->status == IOSTAT_NPORT_BSY) ? 4472 LPFC_EVENT_PORT_BUSY : LPFC_EVENT_FABRIC_BUSY; 4473 if (pnode) { 4474 memcpy(&fast_path_evt->un.fabric_evt.wwpn, 4475 &pnode->nlp_portname, 4476 sizeof(struct lpfc_name)); 4477 memcpy(&fast_path_evt->un.fabric_evt.wwnn, 4478 &pnode->nlp_nodename, 4479 sizeof(struct lpfc_name)); 4480 } 4481 fast_path_evt->vport = vport; 4482 fast_path_evt->work_evt.evt = 4483 LPFC_EVT_FASTPATH_MGMT_EVT; 4484 spin_lock_irqsave(&phba->hbalock, flags); 4485 list_add_tail(&fast_path_evt->work_evt.evt_listp, 4486 &phba->work_list); 4487 spin_unlock_irqrestore(&phba->hbalock, flags); 4488 lpfc_worker_wake_up(phba); 4489 break; 4490 case IOSTAT_LOCAL_REJECT: 4491 case IOSTAT_REMOTE_STOP: 4492 if (lpfc_cmd->result == IOERR_ELXSEC_KEY_UNWRAP_ERROR || 4493 lpfc_cmd->result == 4494 IOERR_ELXSEC_KEY_UNWRAP_COMPARE_ERROR || 4495 lpfc_cmd->result == IOERR_ELXSEC_CRYPTO_ERROR || 4496 lpfc_cmd->result == 4497 IOERR_ELXSEC_CRYPTO_COMPARE_ERROR) { 4498 cmd->result = DID_NO_CONNECT << 16; 4499 break; 4500 } 4501 if (lpfc_cmd->result == IOERR_INVALID_RPI || 4502 lpfc_cmd->result == IOERR_NO_RESOURCES || 4503 lpfc_cmd->result == IOERR_ABORT_REQUESTED || 4504 lpfc_cmd->result == IOERR_SLER_CMD_RCV_FAILURE) { 4505 cmd->result = DID_TRANSPORT_DISRUPTED << 16; 4506 break; 4507 } 4508 if ((lpfc_cmd->result == IOERR_RX_DMA_FAILED || 4509 lpfc_cmd->result == IOERR_TX_DMA_FAILED) && 4510 pIocbOut->iocb.unsli3.sli3_bg.bgstat) { 4511 if (scsi_get_prot_op(cmd) != SCSI_PROT_NORMAL) { 4512 /* 4513 * This is a response for a BG enabled 4514 * cmd. Parse BG error 4515 */ 4516 lpfc_parse_bg_err(phba, lpfc_cmd, 4517 pIocbOut); 4518 break; 4519 } else { 4520 lpfc_printf_vlog(vport, KERN_WARNING, 4521 LOG_BG, 4522 "9031 non-zero BGSTAT " 4523 "on unprotected cmd\n"); 4524 } 4525 } 4526 if ((lpfc_cmd->status == IOSTAT_REMOTE_STOP) 4527 && (phba->sli_rev == LPFC_SLI_REV4) 4528 && pnode) { 4529 /* This IO was aborted by the target, we don't 4530 * know the rxid and because we did not send the 4531 * ABTS we cannot generate and RRQ. 4532 */ 4533 lpfc_set_rrq_active(phba, pnode, 4534 lpfc_cmd->cur_iocbq.sli4_lxritag, 4535 0, 0); 4536 } 4537 fallthrough; 4538 default: 4539 cmd->result = DID_ERROR << 16; 4540 break; 4541 } 4542 4543 if (!pnode || (pnode->nlp_state != NLP_STE_MAPPED_NODE)) 4544 cmd->result = DID_TRANSPORT_DISRUPTED << 16 | 4545 SAM_STAT_BUSY; 4546 } else 4547 cmd->result = DID_OK << 16; 4548 4549 if (cmd->result || lpfc_cmd->fcp_rsp->rspSnsLen) { 4550 uint32_t *lp = (uint32_t *)cmd->sense_buffer; 4551 4552 lpfc_printf_vlog(vport, KERN_INFO, LOG_FCP, 4553 "0710 Iodone <%d/%llu> cmd x%px, error " 4554 "x%x SNS x%x x%x Data: x%x x%x\n", 4555 cmd->device->id, cmd->device->lun, cmd, 4556 cmd->result, *lp, *(lp + 3), cmd->retries, 4557 scsi_get_resid(cmd)); 4558 } 4559 4560 if (vport->cfg_max_scsicmpl_time && 4561 time_after(jiffies, lpfc_cmd->start_time + 4562 msecs_to_jiffies(vport->cfg_max_scsicmpl_time))) { 4563 spin_lock_irqsave(shost->host_lock, flags); 4564 if (pnode) { 4565 if (pnode->cmd_qdepth > 4566 atomic_read(&pnode->cmd_pending) && 4567 (atomic_read(&pnode->cmd_pending) > 4568 LPFC_MIN_TGT_QDEPTH) && 4569 ((cmd->cmnd[0] == READ_10) || 4570 (cmd->cmnd[0] == WRITE_10))) 4571 pnode->cmd_qdepth = 4572 atomic_read(&pnode->cmd_pending); 4573 4574 pnode->last_change_time = jiffies; 4575 } 4576 spin_unlock_irqrestore(shost->host_lock, flags); 4577 } 4578 lpfc_scsi_unprep_dma_buf(phba, lpfc_cmd); 4579 4580 lpfc_cmd->pCmd = NULL; 4581 spin_unlock(&lpfc_cmd->buf_lock); 4582 4583 #ifdef CONFIG_SCSI_LPFC_DEBUG_FS 4584 if (lpfc_cmd->ts_cmd_start) { 4585 lpfc_cmd->ts_isr_cmpl = pIocbIn->isr_timestamp; 4586 lpfc_cmd->ts_data_io = ktime_get_ns(); 4587 phba->ktime_last_cmd = lpfc_cmd->ts_data_io; 4588 lpfc_io_ktime(phba, lpfc_cmd); 4589 } 4590 #endif 4591 4592 /* The sdev is not guaranteed to be valid post scsi_done upcall. */ 4593 scsi_done(cmd); 4594 4595 /* 4596 * If there is an abort thread waiting for command completion 4597 * wake up the thread. 4598 */ 4599 spin_lock(&lpfc_cmd->buf_lock); 4600 lpfc_cmd->cur_iocbq.cmd_flag &= ~LPFC_DRIVER_ABORTED; 4601 if (lpfc_cmd->waitq) 4602 wake_up(lpfc_cmd->waitq); 4603 spin_unlock(&lpfc_cmd->buf_lock); 4604 4605 lpfc_release_scsi_buf(phba, lpfc_cmd); 4606 } 4607 4608 /** 4609 * lpfc_scsi_prep_cmnd_buf_s3 - SLI-3 IOCB init for the IO 4610 * @vport: Pointer to vport object. 4611 * @lpfc_cmd: The scsi buffer which is going to be prep'ed. 4612 * @tmo: timeout value for the IO 4613 * 4614 * Based on the data-direction of the command, initialize IOCB 4615 * in the I/O buffer. Fill in the IOCB fields which are independent 4616 * of the scsi buffer 4617 * 4618 * RETURNS 0 - SUCCESS, 4619 **/ 4620 static int lpfc_scsi_prep_cmnd_buf_s3(struct lpfc_vport *vport, 4621 struct lpfc_io_buf *lpfc_cmd, 4622 uint8_t tmo) 4623 { 4624 IOCB_t *iocb_cmd = &lpfc_cmd->cur_iocbq.iocb; 4625 struct lpfc_iocbq *piocbq = &lpfc_cmd->cur_iocbq; 4626 struct scsi_cmnd *scsi_cmnd = lpfc_cmd->pCmd; 4627 struct fcp_cmnd *fcp_cmnd = lpfc_cmd->fcp_cmnd; 4628 struct lpfc_nodelist *pnode = lpfc_cmd->ndlp; 4629 int datadir = scsi_cmnd->sc_data_direction; 4630 u32 fcpdl; 4631 4632 piocbq->iocb.un.fcpi.fcpi_XRdy = 0; 4633 4634 /* 4635 * There are three possibilities here - use scatter-gather segment, use 4636 * the single mapping, or neither. Start the lpfc command prep by 4637 * bumping the bpl beyond the fcp_cmnd and fcp_rsp regions to the first 4638 * data bde entry. 4639 */ 4640 if (scsi_sg_count(scsi_cmnd)) { 4641 if (datadir == DMA_TO_DEVICE) { 4642 iocb_cmd->ulpCommand = CMD_FCP_IWRITE64_CR; 4643 iocb_cmd->ulpPU = PARM_READ_CHECK; 4644 if (vport->cfg_first_burst_size && 4645 (pnode->nlp_flag & NLP_FIRSTBURST)) { 4646 u32 xrdy_len; 4647 4648 fcpdl = scsi_bufflen(scsi_cmnd); 4649 xrdy_len = min(fcpdl, 4650 vport->cfg_first_burst_size); 4651 piocbq->iocb.un.fcpi.fcpi_XRdy = xrdy_len; 4652 } 4653 fcp_cmnd->fcpCntl3 = WRITE_DATA; 4654 } else { 4655 iocb_cmd->ulpCommand = CMD_FCP_IREAD64_CR; 4656 iocb_cmd->ulpPU = PARM_READ_CHECK; 4657 fcp_cmnd->fcpCntl3 = READ_DATA; 4658 } 4659 } else { 4660 iocb_cmd->ulpCommand = CMD_FCP_ICMND64_CR; 4661 iocb_cmd->un.fcpi.fcpi_parm = 0; 4662 iocb_cmd->ulpPU = 0; 4663 fcp_cmnd->fcpCntl3 = 0; 4664 } 4665 4666 /* 4667 * Finish initializing those IOCB fields that are independent 4668 * of the scsi_cmnd request_buffer 4669 */ 4670 piocbq->iocb.ulpContext = pnode->nlp_rpi; 4671 if (pnode->nlp_fcp_info & NLP_FCP_2_DEVICE) 4672 piocbq->iocb.ulpFCP2Rcvy = 1; 4673 else 4674 piocbq->iocb.ulpFCP2Rcvy = 0; 4675 4676 piocbq->iocb.ulpClass = (pnode->nlp_fcp_info & 0x0f); 4677 piocbq->io_buf = lpfc_cmd; 4678 if (!piocbq->cmd_cmpl) 4679 piocbq->cmd_cmpl = lpfc_scsi_cmd_iocb_cmpl; 4680 piocbq->iocb.ulpTimeout = tmo; 4681 piocbq->vport = vport; 4682 return 0; 4683 } 4684 4685 /** 4686 * lpfc_scsi_prep_cmnd_buf_s4 - SLI-4 WQE init for the IO 4687 * @vport: Pointer to vport object. 4688 * @lpfc_cmd: The scsi buffer which is going to be prep'ed. 4689 * @tmo: timeout value for the IO 4690 * 4691 * Based on the data-direction of the command copy WQE template 4692 * to I/O buffer WQE. Fill in the WQE fields which are independent 4693 * of the scsi buffer 4694 * 4695 * RETURNS 0 - SUCCESS, 4696 **/ 4697 static int lpfc_scsi_prep_cmnd_buf_s4(struct lpfc_vport *vport, 4698 struct lpfc_io_buf *lpfc_cmd, 4699 uint8_t tmo) 4700 { 4701 struct lpfc_hba *phba = vport->phba; 4702 struct scsi_cmnd *scsi_cmnd = lpfc_cmd->pCmd; 4703 struct fcp_cmnd *fcp_cmnd = lpfc_cmd->fcp_cmnd; 4704 struct lpfc_sli4_hdw_queue *hdwq = NULL; 4705 struct lpfc_iocbq *pwqeq = &lpfc_cmd->cur_iocbq; 4706 struct lpfc_nodelist *pnode = lpfc_cmd->ndlp; 4707 union lpfc_wqe128 *wqe = &pwqeq->wqe; 4708 u16 idx = lpfc_cmd->hdwq_no; 4709 int datadir = scsi_cmnd->sc_data_direction; 4710 4711 hdwq = &phba->sli4_hba.hdwq[idx]; 4712 4713 /* Initialize 64 bytes only */ 4714 memset(wqe, 0, sizeof(union lpfc_wqe128)); 4715 4716 /* 4717 * There are three possibilities here - use scatter-gather segment, use 4718 * the single mapping, or neither. 4719 */ 4720 if (scsi_sg_count(scsi_cmnd)) { 4721 if (datadir == DMA_TO_DEVICE) { 4722 /* From the iwrite template, initialize words 7 - 11 */ 4723 memcpy(&wqe->words[7], 4724 &lpfc_iwrite_cmd_template.words[7], 4725 sizeof(uint32_t) * 5); 4726 4727 fcp_cmnd->fcpCntl3 = WRITE_DATA; 4728 if (hdwq) 4729 hdwq->scsi_cstat.output_requests++; 4730 } else { 4731 /* From the iread template, initialize words 7 - 11 */ 4732 memcpy(&wqe->words[7], 4733 &lpfc_iread_cmd_template.words[7], 4734 sizeof(uint32_t) * 5); 4735 4736 /* Word 7 */ 4737 bf_set(wqe_tmo, &wqe->fcp_iread.wqe_com, tmo); 4738 4739 fcp_cmnd->fcpCntl3 = READ_DATA; 4740 if (hdwq) 4741 hdwq->scsi_cstat.input_requests++; 4742 4743 /* For a CMF Managed port, iod must be zero'ed */ 4744 if (phba->cmf_active_mode == LPFC_CFG_MANAGED) 4745 bf_set(wqe_iod, &wqe->fcp_iread.wqe_com, 4746 LPFC_WQE_IOD_NONE); 4747 } 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 **/ 4805 static int 4806 lpfc_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 = &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 **/ 4851 static int 4852 lpfc_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 **/ 4911 static int 4912 lpfc_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 **/ 4980 int 4981 lpfc_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 phba->lpfc_scsi_cmd_iocb_cmpl = lpfc_scsi_cmd_iocb_cmpl; 5013 return 0; 5014 } 5015 5016 /** 5017 * lpfc_tskmgmt_def_cmpl - IOCB completion routine for task management command 5018 * @phba: The Hba for which this call is being executed. 5019 * @cmdiocbq: Pointer to lpfc_iocbq data structure. 5020 * @rspiocbq: Pointer to lpfc_iocbq data structure. 5021 * 5022 * This routine is IOCB completion routine for device reset and target reset 5023 * routine. This routine release scsi buffer associated with lpfc_cmd. 5024 **/ 5025 static void 5026 lpfc_tskmgmt_def_cmpl(struct lpfc_hba *phba, 5027 struct lpfc_iocbq *cmdiocbq, 5028 struct lpfc_iocbq *rspiocbq) 5029 { 5030 struct lpfc_io_buf *lpfc_cmd = cmdiocbq->io_buf; 5031 if (lpfc_cmd) 5032 lpfc_release_scsi_buf(phba, lpfc_cmd); 5033 return; 5034 } 5035 5036 /** 5037 * lpfc_check_pci_resettable - Walks list of devices on pci_dev's bus to check 5038 * if issuing a pci_bus_reset is possibly unsafe 5039 * @phba: lpfc_hba pointer. 5040 * 5041 * Description: 5042 * Walks the bus_list to ensure only PCI devices with Emulex 5043 * vendor id, device ids that support hot reset, and only one occurrence 5044 * of function 0. 5045 * 5046 * Returns: 5047 * -EBADSLT, detected invalid device 5048 * 0, successful 5049 */ 5050 int 5051 lpfc_check_pci_resettable(struct lpfc_hba *phba) 5052 { 5053 const struct pci_dev *pdev = phba->pcidev; 5054 struct pci_dev *ptr = NULL; 5055 u8 counter = 0; 5056 5057 /* Walk the list of devices on the pci_dev's bus */ 5058 list_for_each_entry(ptr, &pdev->bus->devices, bus_list) { 5059 /* Check for Emulex Vendor ID */ 5060 if (ptr->vendor != PCI_VENDOR_ID_EMULEX) { 5061 lpfc_printf_log(phba, KERN_INFO, LOG_INIT, 5062 "8346 Non-Emulex vendor found: " 5063 "0x%04x\n", ptr->vendor); 5064 return -EBADSLT; 5065 } 5066 5067 /* Check for valid Emulex Device ID */ 5068 if (phba->sli_rev != LPFC_SLI_REV4 || 5069 phba->hba_flag & HBA_FCOE_MODE) { 5070 lpfc_printf_log(phba, KERN_INFO, LOG_INIT, 5071 "8347 Incapable PCI reset device: " 5072 "0x%04x\n", ptr->device); 5073 return -EBADSLT; 5074 } 5075 5076 /* Check for only one function 0 ID to ensure only one HBA on 5077 * secondary bus 5078 */ 5079 if (ptr->devfn == 0) { 5080 if (++counter > 1) { 5081 lpfc_printf_log(phba, KERN_INFO, LOG_INIT, 5082 "8348 More than one device on " 5083 "secondary bus found\n"); 5084 return -EBADSLT; 5085 } 5086 } 5087 } 5088 5089 return 0; 5090 } 5091 5092 /** 5093 * lpfc_info - Info entry point of scsi_host_template data structure 5094 * @host: The scsi host for which this call is being executed. 5095 * 5096 * This routine provides module information about hba. 5097 * 5098 * Reutrn code: 5099 * Pointer to char - Success. 5100 **/ 5101 const char * 5102 lpfc_info(struct Scsi_Host *host) 5103 { 5104 struct lpfc_vport *vport = (struct lpfc_vport *) host->hostdata; 5105 struct lpfc_hba *phba = vport->phba; 5106 int link_speed = 0; 5107 static char lpfcinfobuf[384]; 5108 char tmp[384] = {0}; 5109 5110 memset(lpfcinfobuf, 0, sizeof(lpfcinfobuf)); 5111 if (phba && phba->pcidev){ 5112 /* Model Description */ 5113 scnprintf(tmp, sizeof(tmp), phba->ModelDesc); 5114 if (strlcat(lpfcinfobuf, tmp, sizeof(lpfcinfobuf)) >= 5115 sizeof(lpfcinfobuf)) 5116 goto buffer_done; 5117 5118 /* PCI Info */ 5119 scnprintf(tmp, sizeof(tmp), 5120 " on PCI bus %02x device %02x irq %d", 5121 phba->pcidev->bus->number, phba->pcidev->devfn, 5122 phba->pcidev->irq); 5123 if (strlcat(lpfcinfobuf, tmp, sizeof(lpfcinfobuf)) >= 5124 sizeof(lpfcinfobuf)) 5125 goto buffer_done; 5126 5127 /* Port Number */ 5128 if (phba->Port[0]) { 5129 scnprintf(tmp, sizeof(tmp), " port %s", phba->Port); 5130 if (strlcat(lpfcinfobuf, tmp, sizeof(lpfcinfobuf)) >= 5131 sizeof(lpfcinfobuf)) 5132 goto buffer_done; 5133 } 5134 5135 /* Link Speed */ 5136 link_speed = lpfc_sli_port_speed_get(phba); 5137 if (link_speed != 0) { 5138 scnprintf(tmp, sizeof(tmp), 5139 " Logical Link Speed: %d Mbps", link_speed); 5140 if (strlcat(lpfcinfobuf, tmp, sizeof(lpfcinfobuf)) >= 5141 sizeof(lpfcinfobuf)) 5142 goto buffer_done; 5143 } 5144 5145 /* PCI resettable */ 5146 if (!lpfc_check_pci_resettable(phba)) { 5147 scnprintf(tmp, sizeof(tmp), " PCI resettable"); 5148 strlcat(lpfcinfobuf, tmp, sizeof(lpfcinfobuf)); 5149 } 5150 } 5151 5152 buffer_done: 5153 return lpfcinfobuf; 5154 } 5155 5156 /** 5157 * lpfc_poll_rearm_timer - Routine to modify fcp_poll timer of hba 5158 * @phba: The Hba for which this call is being executed. 5159 * 5160 * This routine modifies fcp_poll_timer field of @phba by cfg_poll_tmo. 5161 * The default value of cfg_poll_tmo is 10 milliseconds. 5162 **/ 5163 static __inline__ void lpfc_poll_rearm_timer(struct lpfc_hba * phba) 5164 { 5165 unsigned long poll_tmo_expires = 5166 (jiffies + msecs_to_jiffies(phba->cfg_poll_tmo)); 5167 5168 if (!list_empty(&phba->sli.sli3_ring[LPFC_FCP_RING].txcmplq)) 5169 mod_timer(&phba->fcp_poll_timer, 5170 poll_tmo_expires); 5171 } 5172 5173 /** 5174 * lpfc_poll_start_timer - Routine to start fcp_poll_timer of HBA 5175 * @phba: The Hba for which this call is being executed. 5176 * 5177 * This routine starts the fcp_poll_timer of @phba. 5178 **/ 5179 void lpfc_poll_start_timer(struct lpfc_hba * phba) 5180 { 5181 lpfc_poll_rearm_timer(phba); 5182 } 5183 5184 /** 5185 * lpfc_poll_timeout - Restart polling timer 5186 * @t: Timer construct where lpfc_hba data structure pointer is obtained. 5187 * 5188 * This routine restarts fcp_poll timer, when FCP ring polling is enable 5189 * and FCP Ring interrupt is disable. 5190 **/ 5191 void lpfc_poll_timeout(struct timer_list *t) 5192 { 5193 struct lpfc_hba *phba = from_timer(phba, t, fcp_poll_timer); 5194 5195 if (phba->cfg_poll & ENABLE_FCP_RING_POLLING) { 5196 lpfc_sli_handle_fast_ring_event(phba, 5197 &phba->sli.sli3_ring[LPFC_FCP_RING], HA_R0RE_REQ); 5198 5199 if (phba->cfg_poll & DISABLE_FCP_RING_INT) 5200 lpfc_poll_rearm_timer(phba); 5201 } 5202 } 5203 5204 /* 5205 * lpfc_is_command_vm_io - get the UUID from blk cgroup 5206 * @cmd: Pointer to scsi_cmnd data structure 5207 * Returns UUID if present, otherwise NULL 5208 */ 5209 static char *lpfc_is_command_vm_io(struct scsi_cmnd *cmd) 5210 { 5211 struct bio *bio = scsi_cmd_to_rq(cmd)->bio; 5212 5213 if (!IS_ENABLED(CONFIG_BLK_CGROUP_FC_APPID) || !bio) 5214 return NULL; 5215 return blkcg_get_fc_appid(bio); 5216 } 5217 5218 /** 5219 * lpfc_queuecommand - scsi_host_template queuecommand entry point 5220 * @shost: kernel scsi host pointer. 5221 * @cmnd: Pointer to scsi_cmnd data structure. 5222 * 5223 * Driver registers this routine to scsi midlayer to submit a @cmd to process. 5224 * This routine prepares an IOCB from scsi command and provides to firmware. 5225 * The @done callback is invoked after driver finished processing the command. 5226 * 5227 * Return value : 5228 * 0 - Success 5229 * SCSI_MLQUEUE_HOST_BUSY - Block all devices served by this host temporarily. 5230 **/ 5231 static int 5232 lpfc_queuecommand(struct Scsi_Host *shost, struct scsi_cmnd *cmnd) 5233 { 5234 struct lpfc_vport *vport = (struct lpfc_vport *) shost->hostdata; 5235 struct lpfc_hba *phba = vport->phba; 5236 struct lpfc_iocbq *cur_iocbq = NULL; 5237 struct lpfc_rport_data *rdata; 5238 struct lpfc_nodelist *ndlp; 5239 struct lpfc_io_buf *lpfc_cmd; 5240 struct fc_rport *rport = starget_to_rport(scsi_target(cmnd->device)); 5241 int err, idx; 5242 u8 *uuid = NULL; 5243 uint64_t start; 5244 5245 start = ktime_get_ns(); 5246 rdata = lpfc_rport_data_from_scsi_device(cmnd->device); 5247 5248 /* sanity check on references */ 5249 if (unlikely(!rdata) || unlikely(!rport)) 5250 goto out_fail_command; 5251 5252 err = fc_remote_port_chkready(rport); 5253 if (err) { 5254 cmnd->result = err; 5255 goto out_fail_command; 5256 } 5257 ndlp = rdata->pnode; 5258 5259 if ((scsi_get_prot_op(cmnd) != SCSI_PROT_NORMAL) && 5260 (!(phba->sli3_options & LPFC_SLI3_BG_ENABLED))) { 5261 5262 lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT, 5263 "9058 BLKGRD: ERROR: rcvd protected cmd:%02x" 5264 " op:%02x str=%s without registering for" 5265 " BlockGuard - Rejecting command\n", 5266 cmnd->cmnd[0], scsi_get_prot_op(cmnd), 5267 dif_op_str[scsi_get_prot_op(cmnd)]); 5268 goto out_fail_command; 5269 } 5270 5271 /* 5272 * Catch race where our node has transitioned, but the 5273 * transport is still transitioning. 5274 */ 5275 if (!ndlp) 5276 goto out_tgt_busy1; 5277 5278 /* Check if IO qualifies for CMF */ 5279 if (phba->cmf_active_mode != LPFC_CFG_OFF && 5280 cmnd->sc_data_direction == DMA_FROM_DEVICE && 5281 (scsi_sg_count(cmnd))) { 5282 /* Latency start time saved in rx_cmd_start later in routine */ 5283 err = lpfc_update_cmf_cmd(phba, scsi_bufflen(cmnd)); 5284 if (err) 5285 goto out_tgt_busy1; 5286 } 5287 5288 if (lpfc_ndlp_check_qdepth(phba, ndlp)) { 5289 if (atomic_read(&ndlp->cmd_pending) >= ndlp->cmd_qdepth) { 5290 lpfc_printf_vlog(vport, KERN_INFO, LOG_FCP_ERROR, 5291 "3377 Target Queue Full, scsi Id:%d " 5292 "Qdepth:%d Pending command:%d" 5293 " WWNN:%02x:%02x:%02x:%02x:" 5294 "%02x:%02x:%02x:%02x, " 5295 " WWPN:%02x:%02x:%02x:%02x:" 5296 "%02x:%02x:%02x:%02x", 5297 ndlp->nlp_sid, ndlp->cmd_qdepth, 5298 atomic_read(&ndlp->cmd_pending), 5299 ndlp->nlp_nodename.u.wwn[0], 5300 ndlp->nlp_nodename.u.wwn[1], 5301 ndlp->nlp_nodename.u.wwn[2], 5302 ndlp->nlp_nodename.u.wwn[3], 5303 ndlp->nlp_nodename.u.wwn[4], 5304 ndlp->nlp_nodename.u.wwn[5], 5305 ndlp->nlp_nodename.u.wwn[6], 5306 ndlp->nlp_nodename.u.wwn[7], 5307 ndlp->nlp_portname.u.wwn[0], 5308 ndlp->nlp_portname.u.wwn[1], 5309 ndlp->nlp_portname.u.wwn[2], 5310 ndlp->nlp_portname.u.wwn[3], 5311 ndlp->nlp_portname.u.wwn[4], 5312 ndlp->nlp_portname.u.wwn[5], 5313 ndlp->nlp_portname.u.wwn[6], 5314 ndlp->nlp_portname.u.wwn[7]); 5315 goto out_tgt_busy2; 5316 } 5317 } 5318 5319 lpfc_cmd = lpfc_get_scsi_buf(phba, ndlp, cmnd); 5320 if (lpfc_cmd == NULL) { 5321 lpfc_rampdown_queue_depth(phba); 5322 5323 lpfc_printf_vlog(vport, KERN_INFO, LOG_FCP_ERROR, 5324 "0707 driver's buffer pool is empty, " 5325 "IO busied\n"); 5326 goto out_host_busy; 5327 } 5328 lpfc_cmd->rx_cmd_start = start; 5329 5330 cur_iocbq = &lpfc_cmd->cur_iocbq; 5331 /* 5332 * Store the midlayer's command structure for the completion phase 5333 * and complete the command initialization. 5334 */ 5335 lpfc_cmd->pCmd = cmnd; 5336 lpfc_cmd->rdata = rdata; 5337 lpfc_cmd->ndlp = ndlp; 5338 cur_iocbq->cmd_cmpl = NULL; 5339 cmnd->host_scribble = (unsigned char *)lpfc_cmd; 5340 5341 err = lpfc_scsi_prep_cmnd(vport, lpfc_cmd, ndlp); 5342 if (err) 5343 goto out_host_busy_release_buf; 5344 5345 if (scsi_get_prot_op(cmnd) != SCSI_PROT_NORMAL) { 5346 if (vport->phba->cfg_enable_bg) { 5347 lpfc_printf_vlog(vport, 5348 KERN_INFO, LOG_SCSI_CMD, 5349 "9033 BLKGRD: rcvd %s cmd:x%x " 5350 "reftag x%x cnt %u pt %x\n", 5351 dif_op_str[scsi_get_prot_op(cmnd)], 5352 cmnd->cmnd[0], 5353 scsi_prot_ref_tag(cmnd), 5354 scsi_logical_block_count(cmnd), 5355 (cmnd->cmnd[1]>>5)); 5356 } 5357 err = lpfc_bg_scsi_prep_dma_buf(phba, lpfc_cmd); 5358 } else { 5359 if (vport->phba->cfg_enable_bg) { 5360 lpfc_printf_vlog(vport, 5361 KERN_INFO, LOG_SCSI_CMD, 5362 "9038 BLKGRD: rcvd PROT_NORMAL cmd: " 5363 "x%x reftag x%x cnt %u pt %x\n", 5364 cmnd->cmnd[0], 5365 scsi_prot_ref_tag(cmnd), 5366 scsi_logical_block_count(cmnd), 5367 (cmnd->cmnd[1]>>5)); 5368 } 5369 err = lpfc_scsi_prep_dma_buf(phba, lpfc_cmd); 5370 } 5371 5372 if (unlikely(err)) { 5373 if (err == 2) { 5374 cmnd->result = DID_ERROR << 16; 5375 goto out_fail_command_release_buf; 5376 } 5377 goto out_host_busy_free_buf; 5378 } 5379 5380 /* check the necessary and sufficient condition to support VMID */ 5381 if (lpfc_is_vmid_enabled(phba) && 5382 (ndlp->vmid_support || 5383 phba->pport->vmid_priority_tagging == 5384 LPFC_VMID_PRIO_TAG_ALL_TARGETS)) { 5385 /* is the I/O generated by a VM, get the associated virtual */ 5386 /* entity id */ 5387 uuid = lpfc_is_command_vm_io(cmnd); 5388 5389 if (uuid) { 5390 err = lpfc_vmid_get_appid(vport, uuid, 5391 cmnd->sc_data_direction, 5392 (union lpfc_vmid_io_tag *) 5393 &cur_iocbq->vmid_tag); 5394 if (!err) 5395 cur_iocbq->cmd_flag |= LPFC_IO_VMID; 5396 } 5397 } 5398 5399 #ifdef CONFIG_SCSI_LPFC_DEBUG_FS 5400 if (unlikely(phba->hdwqstat_on & LPFC_CHECK_SCSI_IO)) 5401 this_cpu_inc(phba->sli4_hba.c_stat->xmt_io); 5402 #endif 5403 /* Issue I/O to adapter */ 5404 err = lpfc_sli_issue_fcp_io(phba, LPFC_FCP_RING, cur_iocbq, 5405 SLI_IOCB_RET_IOCB); 5406 #ifdef CONFIG_SCSI_LPFC_DEBUG_FS 5407 if (start) { 5408 lpfc_cmd->ts_cmd_start = start; 5409 lpfc_cmd->ts_last_cmd = phba->ktime_last_cmd; 5410 lpfc_cmd->ts_cmd_wqput = ktime_get_ns(); 5411 } else { 5412 lpfc_cmd->ts_cmd_start = 0; 5413 } 5414 #endif 5415 if (err) { 5416 lpfc_printf_vlog(vport, KERN_INFO, LOG_FCP, 5417 "3376 FCP could not issue iocb err %x " 5418 "FCP cmd x%x <%d/%llu> " 5419 "sid: x%x did: x%x oxid: x%x " 5420 "Data: x%x x%x x%x x%x\n", 5421 err, cmnd->cmnd[0], 5422 cmnd->device ? cmnd->device->id : 0xffff, 5423 cmnd->device ? cmnd->device->lun : (u64)-1, 5424 vport->fc_myDID, ndlp->nlp_DID, 5425 phba->sli_rev == LPFC_SLI_REV4 ? 5426 cur_iocbq->sli4_xritag : 0xffff, 5427 phba->sli_rev == LPFC_SLI_REV4 ? 5428 phba->sli4_hba.rpi_ids[ndlp->nlp_rpi] : 5429 cur_iocbq->iocb.ulpContext, 5430 cur_iocbq->iotag, 5431 phba->sli_rev == LPFC_SLI_REV4 ? 5432 bf_get(wqe_tmo, 5433 &cur_iocbq->wqe.generic.wqe_com) : 5434 cur_iocbq->iocb.ulpTimeout, 5435 (uint32_t)(scsi_cmd_to_rq(cmnd)->timeout / 1000)); 5436 5437 goto out_host_busy_free_buf; 5438 } 5439 5440 if (phba->cfg_poll & ENABLE_FCP_RING_POLLING) { 5441 lpfc_sli_handle_fast_ring_event(phba, 5442 &phba->sli.sli3_ring[LPFC_FCP_RING], HA_R0RE_REQ); 5443 5444 if (phba->cfg_poll & DISABLE_FCP_RING_INT) 5445 lpfc_poll_rearm_timer(phba); 5446 } 5447 5448 if (phba->cfg_xri_rebalancing) 5449 lpfc_keep_pvt_pool_above_lowwm(phba, lpfc_cmd->hdwq_no); 5450 5451 return 0; 5452 5453 out_host_busy_free_buf: 5454 idx = lpfc_cmd->hdwq_no; 5455 lpfc_scsi_unprep_dma_buf(phba, lpfc_cmd); 5456 if (phba->sli4_hba.hdwq) { 5457 switch (lpfc_cmd->fcp_cmnd->fcpCntl3) { 5458 case WRITE_DATA: 5459 phba->sli4_hba.hdwq[idx].scsi_cstat.output_requests--; 5460 break; 5461 case READ_DATA: 5462 phba->sli4_hba.hdwq[idx].scsi_cstat.input_requests--; 5463 break; 5464 default: 5465 phba->sli4_hba.hdwq[idx].scsi_cstat.control_requests--; 5466 } 5467 } 5468 out_host_busy_release_buf: 5469 lpfc_release_scsi_buf(phba, lpfc_cmd); 5470 out_host_busy: 5471 lpfc_update_cmf_cmpl(phba, LPFC_CGN_NOT_SENT, scsi_bufflen(cmnd), 5472 shost); 5473 return SCSI_MLQUEUE_HOST_BUSY; 5474 5475 out_tgt_busy2: 5476 lpfc_update_cmf_cmpl(phba, LPFC_CGN_NOT_SENT, scsi_bufflen(cmnd), 5477 shost); 5478 out_tgt_busy1: 5479 return SCSI_MLQUEUE_TARGET_BUSY; 5480 5481 out_fail_command_release_buf: 5482 lpfc_release_scsi_buf(phba, lpfc_cmd); 5483 lpfc_update_cmf_cmpl(phba, LPFC_CGN_NOT_SENT, scsi_bufflen(cmnd), 5484 shost); 5485 5486 out_fail_command: 5487 scsi_done(cmnd); 5488 return 0; 5489 } 5490 5491 /* 5492 * lpfc_vmid_vport_cleanup - cleans up the resources associated with a vport 5493 * @vport: The virtual port for which this call is being executed. 5494 */ 5495 void lpfc_vmid_vport_cleanup(struct lpfc_vport *vport) 5496 { 5497 u32 bucket; 5498 struct lpfc_vmid *cur; 5499 5500 if (vport->port_type == LPFC_PHYSICAL_PORT) 5501 del_timer_sync(&vport->phba->inactive_vmid_poll); 5502 5503 kfree(vport->qfpa_res); 5504 kfree(vport->vmid_priority.vmid_range); 5505 kfree(vport->vmid); 5506 5507 if (!hash_empty(vport->hash_table)) 5508 hash_for_each(vport->hash_table, bucket, cur, hnode) 5509 hash_del(&cur->hnode); 5510 5511 vport->qfpa_res = NULL; 5512 vport->vmid_priority.vmid_range = NULL; 5513 vport->vmid = NULL; 5514 vport->cur_vmid_cnt = 0; 5515 } 5516 5517 /** 5518 * lpfc_abort_handler - scsi_host_template eh_abort_handler entry point 5519 * @cmnd: Pointer to scsi_cmnd data structure. 5520 * 5521 * This routine aborts @cmnd pending in base driver. 5522 * 5523 * Return code : 5524 * 0x2003 - Error 5525 * 0x2002 - Success 5526 **/ 5527 static int 5528 lpfc_abort_handler(struct scsi_cmnd *cmnd) 5529 { 5530 struct Scsi_Host *shost = cmnd->device->host; 5531 struct fc_rport *rport = starget_to_rport(scsi_target(cmnd->device)); 5532 struct lpfc_vport *vport = (struct lpfc_vport *) shost->hostdata; 5533 struct lpfc_hba *phba = vport->phba; 5534 struct lpfc_iocbq *iocb; 5535 struct lpfc_io_buf *lpfc_cmd; 5536 int ret = SUCCESS, status = 0; 5537 struct lpfc_sli_ring *pring_s4 = NULL; 5538 struct lpfc_sli_ring *pring = NULL; 5539 int ret_val; 5540 unsigned long flags; 5541 DECLARE_WAIT_QUEUE_HEAD_ONSTACK(waitq); 5542 5543 status = fc_block_rport(rport); 5544 if (status != 0 && status != SUCCESS) 5545 return status; 5546 5547 lpfc_cmd = (struct lpfc_io_buf *)cmnd->host_scribble; 5548 if (!lpfc_cmd) 5549 return ret; 5550 5551 /* Guard against IO completion being called at same time */ 5552 spin_lock_irqsave(&lpfc_cmd->buf_lock, flags); 5553 5554 spin_lock(&phba->hbalock); 5555 /* driver queued commands are in process of being flushed */ 5556 if (phba->hba_flag & HBA_IOQ_FLUSH) { 5557 lpfc_printf_vlog(vport, KERN_WARNING, LOG_FCP, 5558 "3168 SCSI Layer abort requested I/O has been " 5559 "flushed by LLD.\n"); 5560 ret = FAILED; 5561 goto out_unlock_hba; 5562 } 5563 5564 if (!lpfc_cmd->pCmd) { 5565 lpfc_printf_vlog(vport, KERN_WARNING, LOG_FCP, 5566 "2873 SCSI Layer I/O Abort Request IO CMPL Status " 5567 "x%x ID %d LUN %llu\n", 5568 SUCCESS, cmnd->device->id, cmnd->device->lun); 5569 goto out_unlock_hba; 5570 } 5571 5572 iocb = &lpfc_cmd->cur_iocbq; 5573 if (phba->sli_rev == LPFC_SLI_REV4) { 5574 pring_s4 = phba->sli4_hba.hdwq[iocb->hba_wqidx].io_wq->pring; 5575 if (!pring_s4) { 5576 ret = FAILED; 5577 goto out_unlock_hba; 5578 } 5579 spin_lock(&pring_s4->ring_lock); 5580 } 5581 /* the command is in process of being cancelled */ 5582 if (!(iocb->cmd_flag & LPFC_IO_ON_TXCMPLQ)) { 5583 lpfc_printf_vlog(vport, KERN_WARNING, LOG_FCP, 5584 "3169 SCSI Layer abort requested I/O has been " 5585 "cancelled by LLD.\n"); 5586 ret = FAILED; 5587 goto out_unlock_ring; 5588 } 5589 /* 5590 * If pCmd field of the corresponding lpfc_io_buf structure 5591 * points to a different SCSI command, then the driver has 5592 * already completed this command, but the midlayer did not 5593 * see the completion before the eh fired. Just return SUCCESS. 5594 */ 5595 if (lpfc_cmd->pCmd != cmnd) { 5596 lpfc_printf_vlog(vport, KERN_WARNING, LOG_FCP, 5597 "3170 SCSI Layer abort requested I/O has been " 5598 "completed by LLD.\n"); 5599 goto out_unlock_ring; 5600 } 5601 5602 WARN_ON(iocb->io_buf != lpfc_cmd); 5603 5604 /* abort issued in recovery is still in progress */ 5605 if (iocb->cmd_flag & LPFC_DRIVER_ABORTED) { 5606 lpfc_printf_vlog(vport, KERN_WARNING, LOG_FCP, 5607 "3389 SCSI Layer I/O Abort Request is pending\n"); 5608 if (phba->sli_rev == LPFC_SLI_REV4) 5609 spin_unlock(&pring_s4->ring_lock); 5610 spin_unlock(&phba->hbalock); 5611 spin_unlock_irqrestore(&lpfc_cmd->buf_lock, flags); 5612 goto wait_for_cmpl; 5613 } 5614 5615 lpfc_cmd->waitq = &waitq; 5616 if (phba->sli_rev == LPFC_SLI_REV4) { 5617 spin_unlock(&pring_s4->ring_lock); 5618 ret_val = lpfc_sli4_issue_abort_iotag(phba, iocb, 5619 lpfc_sli_abort_fcp_cmpl); 5620 } else { 5621 pring = &phba->sli.sli3_ring[LPFC_FCP_RING]; 5622 ret_val = lpfc_sli_issue_abort_iotag(phba, pring, iocb, 5623 lpfc_sli_abort_fcp_cmpl); 5624 } 5625 5626 /* Make sure HBA is alive */ 5627 lpfc_issue_hb_tmo(phba); 5628 5629 if (ret_val != IOCB_SUCCESS) { 5630 /* Indicate the IO is not being aborted by the driver. */ 5631 lpfc_cmd->waitq = NULL; 5632 ret = FAILED; 5633 goto out_unlock_hba; 5634 } 5635 5636 /* no longer need the lock after this point */ 5637 spin_unlock(&phba->hbalock); 5638 spin_unlock_irqrestore(&lpfc_cmd->buf_lock, flags); 5639 5640 if (phba->cfg_poll & DISABLE_FCP_RING_INT) 5641 lpfc_sli_handle_fast_ring_event(phba, 5642 &phba->sli.sli3_ring[LPFC_FCP_RING], HA_R0RE_REQ); 5643 5644 wait_for_cmpl: 5645 /* 5646 * cmd_flag is set to LPFC_DRIVER_ABORTED before we wait 5647 * for abort to complete. 5648 */ 5649 wait_event_timeout(waitq, 5650 (lpfc_cmd->pCmd != cmnd), 5651 msecs_to_jiffies(2*vport->cfg_devloss_tmo*1000)); 5652 5653 spin_lock(&lpfc_cmd->buf_lock); 5654 5655 if (lpfc_cmd->pCmd == cmnd) { 5656 ret = FAILED; 5657 lpfc_printf_vlog(vport, KERN_ERR, LOG_TRACE_EVENT, 5658 "0748 abort handler timed out waiting " 5659 "for aborting I/O (xri:x%x) to complete: " 5660 "ret %#x, ID %d, LUN %llu\n", 5661 iocb->sli4_xritag, ret, 5662 cmnd->device->id, cmnd->device->lun); 5663 } 5664 5665 lpfc_cmd->waitq = NULL; 5666 5667 spin_unlock(&lpfc_cmd->buf_lock); 5668 goto out; 5669 5670 out_unlock_ring: 5671 if (phba->sli_rev == LPFC_SLI_REV4) 5672 spin_unlock(&pring_s4->ring_lock); 5673 out_unlock_hba: 5674 spin_unlock(&phba->hbalock); 5675 spin_unlock_irqrestore(&lpfc_cmd->buf_lock, flags); 5676 out: 5677 lpfc_printf_vlog(vport, KERN_WARNING, LOG_FCP, 5678 "0749 SCSI Layer I/O Abort Request Status x%x ID %d " 5679 "LUN %llu\n", ret, cmnd->device->id, 5680 cmnd->device->lun); 5681 return ret; 5682 } 5683 5684 static char * 5685 lpfc_taskmgmt_name(uint8_t task_mgmt_cmd) 5686 { 5687 switch (task_mgmt_cmd) { 5688 case FCP_ABORT_TASK_SET: 5689 return "ABORT_TASK_SET"; 5690 case FCP_CLEAR_TASK_SET: 5691 return "FCP_CLEAR_TASK_SET"; 5692 case FCP_BUS_RESET: 5693 return "FCP_BUS_RESET"; 5694 case FCP_LUN_RESET: 5695 return "FCP_LUN_RESET"; 5696 case FCP_TARGET_RESET: 5697 return "FCP_TARGET_RESET"; 5698 case FCP_CLEAR_ACA: 5699 return "FCP_CLEAR_ACA"; 5700 case FCP_TERMINATE_TASK: 5701 return "FCP_TERMINATE_TASK"; 5702 default: 5703 return "unknown"; 5704 } 5705 } 5706 5707 5708 /** 5709 * lpfc_check_fcp_rsp - check the returned fcp_rsp to see if task failed 5710 * @vport: The virtual port for which this call is being executed. 5711 * @lpfc_cmd: Pointer to lpfc_io_buf data structure. 5712 * 5713 * This routine checks the FCP RSP INFO to see if the tsk mgmt command succeded 5714 * 5715 * Return code : 5716 * 0x2003 - Error 5717 * 0x2002 - Success 5718 **/ 5719 static int 5720 lpfc_check_fcp_rsp(struct lpfc_vport *vport, struct lpfc_io_buf *lpfc_cmd) 5721 { 5722 struct fcp_rsp *fcprsp = lpfc_cmd->fcp_rsp; 5723 uint32_t rsp_info; 5724 uint32_t rsp_len; 5725 uint8_t rsp_info_code; 5726 int ret = FAILED; 5727 5728 5729 if (fcprsp == NULL) 5730 lpfc_printf_vlog(vport, KERN_INFO, LOG_FCP, 5731 "0703 fcp_rsp is missing\n"); 5732 else { 5733 rsp_info = fcprsp->rspStatus2; 5734 rsp_len = be32_to_cpu(fcprsp->rspRspLen); 5735 rsp_info_code = fcprsp->rspInfo3; 5736 5737 5738 lpfc_printf_vlog(vport, KERN_INFO, 5739 LOG_FCP, 5740 "0706 fcp_rsp valid 0x%x," 5741 " rsp len=%d code 0x%x\n", 5742 rsp_info, 5743 rsp_len, rsp_info_code); 5744 5745 /* If FCP_RSP_LEN_VALID bit is one, then the FCP_RSP_LEN 5746 * field specifies the number of valid bytes of FCP_RSP_INFO. 5747 * The FCP_RSP_LEN field shall be set to 0x04 or 0x08 5748 */ 5749 if ((fcprsp->rspStatus2 & RSP_LEN_VALID) && 5750 ((rsp_len == 8) || (rsp_len == 4))) { 5751 switch (rsp_info_code) { 5752 case RSP_NO_FAILURE: 5753 lpfc_printf_vlog(vport, KERN_INFO, LOG_FCP, 5754 "0715 Task Mgmt No Failure\n"); 5755 ret = SUCCESS; 5756 break; 5757 case RSP_TM_NOT_SUPPORTED: /* TM rejected */ 5758 lpfc_printf_vlog(vport, KERN_INFO, LOG_FCP, 5759 "0716 Task Mgmt Target " 5760 "reject\n"); 5761 break; 5762 case RSP_TM_NOT_COMPLETED: /* TM failed */ 5763 lpfc_printf_vlog(vport, KERN_INFO, LOG_FCP, 5764 "0717 Task Mgmt Target " 5765 "failed TM\n"); 5766 break; 5767 case RSP_TM_INVALID_LU: /* TM to invalid LU! */ 5768 lpfc_printf_vlog(vport, KERN_INFO, LOG_FCP, 5769 "0718 Task Mgmt to invalid " 5770 "LUN\n"); 5771 break; 5772 } 5773 } 5774 } 5775 return ret; 5776 } 5777 5778 5779 /** 5780 * lpfc_send_taskmgmt - Generic SCSI Task Mgmt Handler 5781 * @vport: The virtual port for which this call is being executed. 5782 * @rport: Pointer to remote port 5783 * @tgt_id: Target ID of remote device. 5784 * @lun_id: Lun number for the TMF 5785 * @task_mgmt_cmd: type of TMF to send 5786 * 5787 * This routine builds and sends a TMF (SCSI Task Mgmt Function) to 5788 * a remote port. 5789 * 5790 * Return Code: 5791 * 0x2003 - Error 5792 * 0x2002 - Success. 5793 **/ 5794 static int 5795 lpfc_send_taskmgmt(struct lpfc_vport *vport, struct fc_rport *rport, 5796 unsigned int tgt_id, uint64_t lun_id, 5797 uint8_t task_mgmt_cmd) 5798 { 5799 struct lpfc_hba *phba = vport->phba; 5800 struct lpfc_io_buf *lpfc_cmd; 5801 struct lpfc_iocbq *iocbq; 5802 struct lpfc_iocbq *iocbqrsp; 5803 struct lpfc_rport_data *rdata; 5804 struct lpfc_nodelist *pnode; 5805 int ret; 5806 int status; 5807 5808 rdata = rport->dd_data; 5809 if (!rdata || !rdata->pnode) 5810 return FAILED; 5811 pnode = rdata->pnode; 5812 5813 lpfc_cmd = lpfc_get_scsi_buf(phba, rdata->pnode, NULL); 5814 if (lpfc_cmd == NULL) 5815 return FAILED; 5816 lpfc_cmd->timeout = phba->cfg_task_mgmt_tmo; 5817 lpfc_cmd->rdata = rdata; 5818 lpfc_cmd->pCmd = NULL; 5819 lpfc_cmd->ndlp = pnode; 5820 5821 status = phba->lpfc_scsi_prep_task_mgmt_cmd(vport, lpfc_cmd, lun_id, 5822 task_mgmt_cmd); 5823 if (!status) { 5824 lpfc_release_scsi_buf(phba, lpfc_cmd); 5825 return FAILED; 5826 } 5827 5828 iocbq = &lpfc_cmd->cur_iocbq; 5829 iocbqrsp = lpfc_sli_get_iocbq(phba); 5830 if (iocbqrsp == NULL) { 5831 lpfc_release_scsi_buf(phba, lpfc_cmd); 5832 return FAILED; 5833 } 5834 iocbq->cmd_cmpl = lpfc_tskmgmt_def_cmpl; 5835 iocbq->vport = vport; 5836 5837 lpfc_printf_vlog(vport, KERN_INFO, LOG_FCP, 5838 "0702 Issue %s to TGT %d LUN %llu " 5839 "rpi x%x nlp_flag x%x Data: x%x x%x\n", 5840 lpfc_taskmgmt_name(task_mgmt_cmd), tgt_id, lun_id, 5841 pnode->nlp_rpi, pnode->nlp_flag, iocbq->sli4_xritag, 5842 iocbq->cmd_flag); 5843 5844 status = lpfc_sli_issue_iocb_wait(phba, LPFC_FCP_RING, 5845 iocbq, iocbqrsp, lpfc_cmd->timeout); 5846 if ((status != IOCB_SUCCESS) || 5847 (get_job_ulpstatus(phba, iocbqrsp) != IOSTAT_SUCCESS)) { 5848 if (status != IOCB_SUCCESS || 5849 get_job_ulpstatus(phba, iocbqrsp) != IOSTAT_FCP_RSP_ERROR) 5850 lpfc_printf_vlog(vport, KERN_ERR, LOG_TRACE_EVENT, 5851 "0727 TMF %s to TGT %d LUN %llu " 5852 "failed (%d, %d) cmd_flag x%x\n", 5853 lpfc_taskmgmt_name(task_mgmt_cmd), 5854 tgt_id, lun_id, 5855 get_job_ulpstatus(phba, iocbqrsp), 5856 get_job_word4(phba, iocbqrsp), 5857 iocbq->cmd_flag); 5858 /* if ulpStatus != IOCB_SUCCESS, then status == IOCB_SUCCESS */ 5859 if (status == IOCB_SUCCESS) { 5860 if (get_job_ulpstatus(phba, iocbqrsp) == 5861 IOSTAT_FCP_RSP_ERROR) 5862 /* Something in the FCP_RSP was invalid. 5863 * Check conditions */ 5864 ret = lpfc_check_fcp_rsp(vport, lpfc_cmd); 5865 else 5866 ret = FAILED; 5867 } else if ((status == IOCB_TIMEDOUT) || 5868 (status == IOCB_ABORTED)) { 5869 ret = TIMEOUT_ERROR; 5870 } else { 5871 ret = FAILED; 5872 } 5873 } else 5874 ret = SUCCESS; 5875 5876 lpfc_sli_release_iocbq(phba, iocbqrsp); 5877 5878 if (status != IOCB_TIMEDOUT) 5879 lpfc_release_scsi_buf(phba, lpfc_cmd); 5880 5881 return ret; 5882 } 5883 5884 /** 5885 * lpfc_chk_tgt_mapped - 5886 * @vport: The virtual port to check on 5887 * @rport: Pointer to fc_rport data structure. 5888 * 5889 * This routine delays until the scsi target (aka rport) for the 5890 * command exists (is present and logged in) or we declare it non-existent. 5891 * 5892 * Return code : 5893 * 0x2003 - Error 5894 * 0x2002 - Success 5895 **/ 5896 static int 5897 lpfc_chk_tgt_mapped(struct lpfc_vport *vport, struct fc_rport *rport) 5898 { 5899 struct lpfc_rport_data *rdata; 5900 struct lpfc_nodelist *pnode = NULL; 5901 unsigned long later; 5902 5903 rdata = rport->dd_data; 5904 if (!rdata) { 5905 lpfc_printf_vlog(vport, KERN_INFO, LOG_FCP, 5906 "0797 Tgt Map rport failure: rdata x%px\n", rdata); 5907 return FAILED; 5908 } 5909 pnode = rdata->pnode; 5910 5911 /* 5912 * If target is not in a MAPPED state, delay until 5913 * target is rediscovered or devloss timeout expires. 5914 */ 5915 later = msecs_to_jiffies(2 * vport->cfg_devloss_tmo * 1000) + jiffies; 5916 while (time_after(later, jiffies)) { 5917 if (!pnode) 5918 return FAILED; 5919 if (pnode->nlp_state == NLP_STE_MAPPED_NODE) 5920 return SUCCESS; 5921 schedule_timeout_uninterruptible(msecs_to_jiffies(500)); 5922 rdata = rport->dd_data; 5923 if (!rdata) 5924 return FAILED; 5925 pnode = rdata->pnode; 5926 } 5927 if (!pnode || (pnode->nlp_state != NLP_STE_MAPPED_NODE)) 5928 return FAILED; 5929 return SUCCESS; 5930 } 5931 5932 /** 5933 * lpfc_reset_flush_io_context - 5934 * @vport: The virtual port (scsi_host) for the flush context 5935 * @tgt_id: If aborting by Target contect - specifies the target id 5936 * @lun_id: If aborting by Lun context - specifies the lun id 5937 * @context: specifies the context level to flush at. 5938 * 5939 * After a reset condition via TMF, we need to flush orphaned i/o 5940 * contexts from the adapter. This routine aborts any contexts 5941 * outstanding, then waits for their completions. The wait is 5942 * bounded by devloss_tmo though. 5943 * 5944 * Return code : 5945 * 0x2003 - Error 5946 * 0x2002 - Success 5947 **/ 5948 static int 5949 lpfc_reset_flush_io_context(struct lpfc_vport *vport, uint16_t tgt_id, 5950 uint64_t lun_id, lpfc_ctx_cmd context) 5951 { 5952 struct lpfc_hba *phba = vport->phba; 5953 unsigned long later; 5954 int cnt; 5955 5956 cnt = lpfc_sli_sum_iocb(vport, tgt_id, lun_id, context); 5957 if (cnt) 5958 lpfc_sli_abort_taskmgmt(vport, 5959 &phba->sli.sli3_ring[LPFC_FCP_RING], 5960 tgt_id, lun_id, context); 5961 later = msecs_to_jiffies(2 * vport->cfg_devloss_tmo * 1000) + jiffies; 5962 while (time_after(later, jiffies) && cnt) { 5963 schedule_timeout_uninterruptible(msecs_to_jiffies(20)); 5964 cnt = lpfc_sli_sum_iocb(vport, tgt_id, lun_id, context); 5965 } 5966 if (cnt) { 5967 lpfc_printf_vlog(vport, KERN_ERR, LOG_TRACE_EVENT, 5968 "0724 I/O flush failure for context %s : cnt x%x\n", 5969 ((context == LPFC_CTX_LUN) ? "LUN" : 5970 ((context == LPFC_CTX_TGT) ? "TGT" : 5971 ((context == LPFC_CTX_HOST) ? "HOST" : "Unknown"))), 5972 cnt); 5973 return FAILED; 5974 } 5975 return SUCCESS; 5976 } 5977 5978 /** 5979 * lpfc_device_reset_handler - scsi_host_template eh_device_reset entry point 5980 * @cmnd: Pointer to scsi_cmnd data structure. 5981 * 5982 * This routine does a device reset by sending a LUN_RESET task management 5983 * command. 5984 * 5985 * Return code : 5986 * 0x2003 - Error 5987 * 0x2002 - Success 5988 **/ 5989 static int 5990 lpfc_device_reset_handler(struct scsi_cmnd *cmnd) 5991 { 5992 struct Scsi_Host *shost = cmnd->device->host; 5993 struct fc_rport *rport = starget_to_rport(scsi_target(cmnd->device)); 5994 struct lpfc_vport *vport = (struct lpfc_vport *) shost->hostdata; 5995 struct lpfc_rport_data *rdata; 5996 struct lpfc_nodelist *pnode; 5997 unsigned tgt_id = cmnd->device->id; 5998 uint64_t lun_id = cmnd->device->lun; 5999 struct lpfc_scsi_event_header scsi_event; 6000 int status; 6001 u32 logit = LOG_FCP; 6002 6003 if (!rport) 6004 return FAILED; 6005 6006 rdata = rport->dd_data; 6007 if (!rdata || !rdata->pnode) { 6008 lpfc_printf_vlog(vport, KERN_ERR, LOG_TRACE_EVENT, 6009 "0798 Device Reset rdata failure: rdata x%px\n", 6010 rdata); 6011 return FAILED; 6012 } 6013 pnode = rdata->pnode; 6014 status = fc_block_rport(rport); 6015 if (status != 0 && status != SUCCESS) 6016 return status; 6017 6018 status = lpfc_chk_tgt_mapped(vport, rport); 6019 if (status == FAILED) { 6020 lpfc_printf_vlog(vport, KERN_ERR, LOG_TRACE_EVENT, 6021 "0721 Device Reset rport failure: rdata x%px\n", rdata); 6022 return FAILED; 6023 } 6024 6025 scsi_event.event_type = FC_REG_SCSI_EVENT; 6026 scsi_event.subcategory = LPFC_EVENT_LUNRESET; 6027 scsi_event.lun = lun_id; 6028 memcpy(scsi_event.wwpn, &pnode->nlp_portname, sizeof(struct lpfc_name)); 6029 memcpy(scsi_event.wwnn, &pnode->nlp_nodename, sizeof(struct lpfc_name)); 6030 6031 fc_host_post_vendor_event(shost, fc_get_event_number(), 6032 sizeof(scsi_event), (char *)&scsi_event, LPFC_NL_VENDOR_ID); 6033 6034 status = lpfc_send_taskmgmt(vport, rport, tgt_id, lun_id, 6035 FCP_LUN_RESET); 6036 if (status != SUCCESS) 6037 logit = LOG_TRACE_EVENT; 6038 6039 lpfc_printf_vlog(vport, KERN_ERR, logit, 6040 "0713 SCSI layer issued Device Reset (%d, %llu) " 6041 "return x%x\n", tgt_id, lun_id, status); 6042 6043 /* 6044 * We have to clean up i/o as : they may be orphaned by the TMF; 6045 * or if the TMF failed, they may be in an indeterminate state. 6046 * So, continue on. 6047 * We will report success if all the i/o aborts successfully. 6048 */ 6049 if (status == SUCCESS) 6050 status = lpfc_reset_flush_io_context(vport, tgt_id, lun_id, 6051 LPFC_CTX_LUN); 6052 6053 return status; 6054 } 6055 6056 /** 6057 * lpfc_target_reset_handler - scsi_host_template eh_target_reset entry point 6058 * @cmnd: Pointer to scsi_cmnd data structure. 6059 * 6060 * This routine does a target reset by sending a TARGET_RESET task management 6061 * command. 6062 * 6063 * Return code : 6064 * 0x2003 - Error 6065 * 0x2002 - Success 6066 **/ 6067 static int 6068 lpfc_target_reset_handler(struct scsi_cmnd *cmnd) 6069 { 6070 struct Scsi_Host *shost = cmnd->device->host; 6071 struct fc_rport *rport = starget_to_rport(scsi_target(cmnd->device)); 6072 struct lpfc_vport *vport = (struct lpfc_vport *) shost->hostdata; 6073 struct lpfc_rport_data *rdata; 6074 struct lpfc_nodelist *pnode; 6075 unsigned tgt_id = cmnd->device->id; 6076 uint64_t lun_id = cmnd->device->lun; 6077 struct lpfc_scsi_event_header scsi_event; 6078 int status; 6079 u32 logit = LOG_FCP; 6080 u32 dev_loss_tmo = vport->cfg_devloss_tmo; 6081 unsigned long flags; 6082 DECLARE_WAIT_QUEUE_HEAD_ONSTACK(waitq); 6083 6084 if (!rport) 6085 return FAILED; 6086 6087 rdata = rport->dd_data; 6088 if (!rdata || !rdata->pnode) { 6089 lpfc_printf_vlog(vport, KERN_ERR, LOG_TRACE_EVENT, 6090 "0799 Target Reset rdata failure: rdata x%px\n", 6091 rdata); 6092 return FAILED; 6093 } 6094 pnode = rdata->pnode; 6095 status = fc_block_rport(rport); 6096 if (status != 0 && status != SUCCESS) 6097 return status; 6098 6099 status = lpfc_chk_tgt_mapped(vport, rport); 6100 if (status == FAILED) { 6101 lpfc_printf_vlog(vport, KERN_ERR, LOG_TRACE_EVENT, 6102 "0722 Target Reset rport failure: rdata x%px\n", rdata); 6103 if (pnode) { 6104 spin_lock_irqsave(&pnode->lock, flags); 6105 pnode->nlp_flag &= ~NLP_NPR_ADISC; 6106 pnode->nlp_fcp_info &= ~NLP_FCP_2_DEVICE; 6107 spin_unlock_irqrestore(&pnode->lock, flags); 6108 } 6109 lpfc_reset_flush_io_context(vport, tgt_id, lun_id, 6110 LPFC_CTX_TGT); 6111 return FAST_IO_FAIL; 6112 } 6113 6114 scsi_event.event_type = FC_REG_SCSI_EVENT; 6115 scsi_event.subcategory = LPFC_EVENT_TGTRESET; 6116 scsi_event.lun = 0; 6117 memcpy(scsi_event.wwpn, &pnode->nlp_portname, sizeof(struct lpfc_name)); 6118 memcpy(scsi_event.wwnn, &pnode->nlp_nodename, sizeof(struct lpfc_name)); 6119 6120 fc_host_post_vendor_event(shost, fc_get_event_number(), 6121 sizeof(scsi_event), (char *)&scsi_event, LPFC_NL_VENDOR_ID); 6122 6123 status = lpfc_send_taskmgmt(vport, rport, tgt_id, lun_id, 6124 FCP_TARGET_RESET); 6125 if (status != SUCCESS) { 6126 logit = LOG_TRACE_EVENT; 6127 6128 /* Issue LOGO, if no LOGO is outstanding */ 6129 spin_lock_irqsave(&pnode->lock, flags); 6130 if (!(pnode->save_flags & NLP_WAIT_FOR_LOGO) && 6131 !pnode->logo_waitq) { 6132 pnode->logo_waitq = &waitq; 6133 pnode->nlp_fcp_info &= ~NLP_FCP_2_DEVICE; 6134 pnode->nlp_flag |= NLP_ISSUE_LOGO; 6135 pnode->save_flags |= NLP_WAIT_FOR_LOGO; 6136 spin_unlock_irqrestore(&pnode->lock, flags); 6137 lpfc_unreg_rpi(vport, pnode); 6138 wait_event_timeout(waitq, 6139 (!(pnode->save_flags & 6140 NLP_WAIT_FOR_LOGO)), 6141 msecs_to_jiffies(dev_loss_tmo * 6142 1000)); 6143 6144 if (pnode->save_flags & NLP_WAIT_FOR_LOGO) { 6145 lpfc_printf_vlog(vport, KERN_ERR, logit, 6146 "0725 SCSI layer TGTRST " 6147 "failed & LOGO TMO (%d, %llu) " 6148 "return x%x\n", 6149 tgt_id, lun_id, status); 6150 spin_lock_irqsave(&pnode->lock, flags); 6151 pnode->save_flags &= ~NLP_WAIT_FOR_LOGO; 6152 } else { 6153 spin_lock_irqsave(&pnode->lock, flags); 6154 } 6155 pnode->logo_waitq = NULL; 6156 spin_unlock_irqrestore(&pnode->lock, flags); 6157 status = SUCCESS; 6158 6159 } else { 6160 spin_unlock_irqrestore(&pnode->lock, flags); 6161 status = FAILED; 6162 } 6163 } 6164 6165 lpfc_printf_vlog(vport, KERN_ERR, logit, 6166 "0723 SCSI layer issued Target Reset (%d, %llu) " 6167 "return x%x\n", tgt_id, lun_id, status); 6168 6169 /* 6170 * We have to clean up i/o as : they may be orphaned by the TMF; 6171 * or if the TMF failed, they may be in an indeterminate state. 6172 * So, continue on. 6173 * We will report success if all the i/o aborts successfully. 6174 */ 6175 if (status == SUCCESS) 6176 status = lpfc_reset_flush_io_context(vport, tgt_id, lun_id, 6177 LPFC_CTX_TGT); 6178 return status; 6179 } 6180 6181 /** 6182 * lpfc_host_reset_handler - scsi_host_template eh_host_reset_handler entry pt 6183 * @cmnd: Pointer to scsi_cmnd data structure. 6184 * 6185 * This routine does host reset to the adaptor port. It brings the HBA 6186 * offline, performs a board restart, and then brings the board back online. 6187 * The lpfc_offline calls lpfc_sli_hba_down which will abort and local 6188 * reject all outstanding SCSI commands to the host and error returned 6189 * back to SCSI mid-level. As this will be SCSI mid-level's last resort 6190 * of error handling, it will only return error if resetting of the adapter 6191 * is not successful; in all other cases, will return success. 6192 * 6193 * Return code : 6194 * 0x2003 - Error 6195 * 0x2002 - Success 6196 **/ 6197 static int 6198 lpfc_host_reset_handler(struct scsi_cmnd *cmnd) 6199 { 6200 struct Scsi_Host *shost = cmnd->device->host; 6201 struct lpfc_vport *vport = (struct lpfc_vport *) shost->hostdata; 6202 struct lpfc_hba *phba = vport->phba; 6203 int rc, ret = SUCCESS; 6204 6205 lpfc_printf_vlog(vport, KERN_ERR, LOG_FCP, 6206 "3172 SCSI layer issued Host Reset Data:\n"); 6207 6208 lpfc_offline_prep(phba, LPFC_MBX_WAIT); 6209 lpfc_offline(phba); 6210 rc = lpfc_sli_brdrestart(phba); 6211 if (rc) 6212 goto error; 6213 6214 /* Wait for successful restart of adapter */ 6215 if (phba->sli_rev < LPFC_SLI_REV4) { 6216 rc = lpfc_sli_chipset_init(phba); 6217 if (rc) 6218 goto error; 6219 } 6220 6221 rc = lpfc_online(phba); 6222 if (rc) 6223 goto error; 6224 6225 lpfc_unblock_mgmt_io(phba); 6226 6227 return ret; 6228 error: 6229 lpfc_printf_vlog(vport, KERN_ERR, LOG_TRACE_EVENT, 6230 "3323 Failed host reset\n"); 6231 lpfc_unblock_mgmt_io(phba); 6232 return FAILED; 6233 } 6234 6235 /** 6236 * lpfc_slave_alloc - scsi_host_template slave_alloc entry point 6237 * @sdev: Pointer to scsi_device. 6238 * 6239 * This routine populates the cmds_per_lun count + 2 scsi_bufs into this host's 6240 * globally available list of scsi buffers. This routine also makes sure scsi 6241 * buffer is not allocated more than HBA limit conveyed to midlayer. This list 6242 * of scsi buffer exists for the lifetime of the driver. 6243 * 6244 * Return codes: 6245 * non-0 - Error 6246 * 0 - Success 6247 **/ 6248 static int 6249 lpfc_slave_alloc(struct scsi_device *sdev) 6250 { 6251 struct lpfc_vport *vport = (struct lpfc_vport *) sdev->host->hostdata; 6252 struct lpfc_hba *phba = vport->phba; 6253 struct fc_rport *rport = starget_to_rport(scsi_target(sdev)); 6254 uint32_t total = 0; 6255 uint32_t num_to_alloc = 0; 6256 int num_allocated = 0; 6257 uint32_t sdev_cnt; 6258 struct lpfc_device_data *device_data; 6259 unsigned long flags; 6260 struct lpfc_name target_wwpn; 6261 6262 if (!rport || fc_remote_port_chkready(rport)) 6263 return -ENXIO; 6264 6265 if (phba->cfg_fof) { 6266 6267 /* 6268 * Check to see if the device data structure for the lun 6269 * exists. If not, create one. 6270 */ 6271 6272 u64_to_wwn(rport->port_name, target_wwpn.u.wwn); 6273 spin_lock_irqsave(&phba->devicelock, flags); 6274 device_data = __lpfc_get_device_data(phba, 6275 &phba->luns, 6276 &vport->fc_portname, 6277 &target_wwpn, 6278 sdev->lun); 6279 if (!device_data) { 6280 spin_unlock_irqrestore(&phba->devicelock, flags); 6281 device_data = lpfc_create_device_data(phba, 6282 &vport->fc_portname, 6283 &target_wwpn, 6284 sdev->lun, 6285 phba->cfg_XLanePriority, 6286 true); 6287 if (!device_data) 6288 return -ENOMEM; 6289 spin_lock_irqsave(&phba->devicelock, flags); 6290 list_add_tail(&device_data->listentry, &phba->luns); 6291 } 6292 device_data->rport_data = rport->dd_data; 6293 device_data->available = true; 6294 spin_unlock_irqrestore(&phba->devicelock, flags); 6295 sdev->hostdata = device_data; 6296 } else { 6297 sdev->hostdata = rport->dd_data; 6298 } 6299 sdev_cnt = atomic_inc_return(&phba->sdev_cnt); 6300 6301 /* For SLI4, all IO buffers are pre-allocated */ 6302 if (phba->sli_rev == LPFC_SLI_REV4) 6303 return 0; 6304 6305 /* This code path is now ONLY for SLI3 adapters */ 6306 6307 /* 6308 * Populate the cmds_per_lun count scsi_bufs into this host's globally 6309 * available list of scsi buffers. Don't allocate more than the 6310 * HBA limit conveyed to the midlayer via the host structure. The 6311 * formula accounts for the lun_queue_depth + error handlers + 1 6312 * extra. This list of scsi bufs exists for the lifetime of the driver. 6313 */ 6314 total = phba->total_scsi_bufs; 6315 num_to_alloc = vport->cfg_lun_queue_depth + 2; 6316 6317 /* If allocated buffers are enough do nothing */ 6318 if ((sdev_cnt * (vport->cfg_lun_queue_depth + 2)) < total) 6319 return 0; 6320 6321 /* Allow some exchanges to be available always to complete discovery */ 6322 if (total >= phba->cfg_hba_queue_depth - LPFC_DISC_IOCB_BUFF_COUNT ) { 6323 lpfc_printf_vlog(vport, KERN_WARNING, LOG_FCP, 6324 "0704 At limitation of %d preallocated " 6325 "command buffers\n", total); 6326 return 0; 6327 /* Allow some exchanges to be available always to complete discovery */ 6328 } else if (total + num_to_alloc > 6329 phba->cfg_hba_queue_depth - LPFC_DISC_IOCB_BUFF_COUNT ) { 6330 lpfc_printf_vlog(vport, KERN_WARNING, LOG_FCP, 6331 "0705 Allocation request of %d " 6332 "command buffers will exceed max of %d. " 6333 "Reducing allocation request to %d.\n", 6334 num_to_alloc, phba->cfg_hba_queue_depth, 6335 (phba->cfg_hba_queue_depth - total)); 6336 num_to_alloc = phba->cfg_hba_queue_depth - total; 6337 } 6338 num_allocated = lpfc_new_scsi_buf_s3(vport, num_to_alloc); 6339 if (num_to_alloc != num_allocated) { 6340 lpfc_printf_vlog(vport, KERN_ERR, LOG_TRACE_EVENT, 6341 "0708 Allocation request of %d " 6342 "command buffers did not succeed. " 6343 "Allocated %d buffers.\n", 6344 num_to_alloc, num_allocated); 6345 } 6346 if (num_allocated > 0) 6347 phba->total_scsi_bufs += num_allocated; 6348 return 0; 6349 } 6350 6351 /** 6352 * lpfc_slave_configure - scsi_host_template slave_configure entry point 6353 * @sdev: Pointer to scsi_device. 6354 * 6355 * This routine configures following items 6356 * - Tag command queuing support for @sdev if supported. 6357 * - Enable SLI polling for fcp ring if ENABLE_FCP_RING_POLLING flag is set. 6358 * 6359 * Return codes: 6360 * 0 - Success 6361 **/ 6362 static int 6363 lpfc_slave_configure(struct scsi_device *sdev) 6364 { 6365 struct lpfc_vport *vport = (struct lpfc_vport *) sdev->host->hostdata; 6366 struct lpfc_hba *phba = vport->phba; 6367 6368 scsi_change_queue_depth(sdev, vport->cfg_lun_queue_depth); 6369 6370 if (phba->cfg_poll & ENABLE_FCP_RING_POLLING) { 6371 lpfc_sli_handle_fast_ring_event(phba, 6372 &phba->sli.sli3_ring[LPFC_FCP_RING], HA_R0RE_REQ); 6373 if (phba->cfg_poll & DISABLE_FCP_RING_INT) 6374 lpfc_poll_rearm_timer(phba); 6375 } 6376 6377 return 0; 6378 } 6379 6380 /** 6381 * lpfc_slave_destroy - slave_destroy entry point of SHT data structure 6382 * @sdev: Pointer to scsi_device. 6383 * 6384 * This routine sets @sdev hostatdata filed to null. 6385 **/ 6386 static void 6387 lpfc_slave_destroy(struct scsi_device *sdev) 6388 { 6389 struct lpfc_vport *vport = (struct lpfc_vport *) sdev->host->hostdata; 6390 struct lpfc_hba *phba = vport->phba; 6391 unsigned long flags; 6392 struct lpfc_device_data *device_data = sdev->hostdata; 6393 6394 atomic_dec(&phba->sdev_cnt); 6395 if ((phba->cfg_fof) && (device_data)) { 6396 spin_lock_irqsave(&phba->devicelock, flags); 6397 device_data->available = false; 6398 if (!device_data->oas_enabled) 6399 lpfc_delete_device_data(phba, device_data); 6400 spin_unlock_irqrestore(&phba->devicelock, flags); 6401 } 6402 sdev->hostdata = NULL; 6403 return; 6404 } 6405 6406 /** 6407 * lpfc_create_device_data - creates and initializes device data structure for OAS 6408 * @phba: Pointer to host bus adapter structure. 6409 * @vport_wwpn: Pointer to vport's wwpn information 6410 * @target_wwpn: Pointer to target's wwpn information 6411 * @lun: Lun on target 6412 * @pri: Priority 6413 * @atomic_create: Flag to indicate if memory should be allocated using the 6414 * GFP_ATOMIC flag or not. 6415 * 6416 * This routine creates a device data structure which will contain identifying 6417 * information for the device (host wwpn, target wwpn, lun), state of OAS, 6418 * whether or not the corresponding lun is available by the system, 6419 * and pointer to the rport data. 6420 * 6421 * Return codes: 6422 * NULL - Error 6423 * Pointer to lpfc_device_data - Success 6424 **/ 6425 struct lpfc_device_data* 6426 lpfc_create_device_data(struct lpfc_hba *phba, struct lpfc_name *vport_wwpn, 6427 struct lpfc_name *target_wwpn, uint64_t lun, 6428 uint32_t pri, bool atomic_create) 6429 { 6430 6431 struct lpfc_device_data *lun_info; 6432 int memory_flags; 6433 6434 if (unlikely(!phba) || !vport_wwpn || !target_wwpn || 6435 !(phba->cfg_fof)) 6436 return NULL; 6437 6438 /* Attempt to create the device data to contain lun info */ 6439 6440 if (atomic_create) 6441 memory_flags = GFP_ATOMIC; 6442 else 6443 memory_flags = GFP_KERNEL; 6444 lun_info = mempool_alloc(phba->device_data_mem_pool, memory_flags); 6445 if (!lun_info) 6446 return NULL; 6447 INIT_LIST_HEAD(&lun_info->listentry); 6448 lun_info->rport_data = NULL; 6449 memcpy(&lun_info->device_id.vport_wwpn, vport_wwpn, 6450 sizeof(struct lpfc_name)); 6451 memcpy(&lun_info->device_id.target_wwpn, target_wwpn, 6452 sizeof(struct lpfc_name)); 6453 lun_info->device_id.lun = lun; 6454 lun_info->oas_enabled = false; 6455 lun_info->priority = pri; 6456 lun_info->available = false; 6457 return lun_info; 6458 } 6459 6460 /** 6461 * lpfc_delete_device_data - frees a device data structure for OAS 6462 * @phba: Pointer to host bus adapter structure. 6463 * @lun_info: Pointer to device data structure to free. 6464 * 6465 * This routine frees the previously allocated device data structure passed. 6466 * 6467 **/ 6468 void 6469 lpfc_delete_device_data(struct lpfc_hba *phba, 6470 struct lpfc_device_data *lun_info) 6471 { 6472 6473 if (unlikely(!phba) || !lun_info || 6474 !(phba->cfg_fof)) 6475 return; 6476 6477 if (!list_empty(&lun_info->listentry)) 6478 list_del(&lun_info->listentry); 6479 mempool_free(lun_info, phba->device_data_mem_pool); 6480 return; 6481 } 6482 6483 /** 6484 * __lpfc_get_device_data - returns the device data for the specified lun 6485 * @phba: Pointer to host bus adapter structure. 6486 * @list: Point to list to search. 6487 * @vport_wwpn: Pointer to vport's wwpn information 6488 * @target_wwpn: Pointer to target's wwpn information 6489 * @lun: Lun on target 6490 * 6491 * This routine searches the list passed for the specified lun's device data. 6492 * This function does not hold locks, it is the responsibility of the caller 6493 * to ensure the proper lock is held before calling the function. 6494 * 6495 * Return codes: 6496 * NULL - Error 6497 * Pointer to lpfc_device_data - Success 6498 **/ 6499 struct lpfc_device_data* 6500 __lpfc_get_device_data(struct lpfc_hba *phba, struct list_head *list, 6501 struct lpfc_name *vport_wwpn, 6502 struct lpfc_name *target_wwpn, uint64_t lun) 6503 { 6504 6505 struct lpfc_device_data *lun_info; 6506 6507 if (unlikely(!phba) || !list || !vport_wwpn || !target_wwpn || 6508 !phba->cfg_fof) 6509 return NULL; 6510 6511 /* Check to see if the lun is already enabled for OAS. */ 6512 6513 list_for_each_entry(lun_info, list, listentry) { 6514 if ((memcmp(&lun_info->device_id.vport_wwpn, vport_wwpn, 6515 sizeof(struct lpfc_name)) == 0) && 6516 (memcmp(&lun_info->device_id.target_wwpn, target_wwpn, 6517 sizeof(struct lpfc_name)) == 0) && 6518 (lun_info->device_id.lun == lun)) 6519 return lun_info; 6520 } 6521 6522 return NULL; 6523 } 6524 6525 /** 6526 * lpfc_find_next_oas_lun - searches for the next oas lun 6527 * @phba: Pointer to host bus adapter structure. 6528 * @vport_wwpn: Pointer to vport's wwpn information 6529 * @target_wwpn: Pointer to target's wwpn information 6530 * @starting_lun: Pointer to the lun to start searching for 6531 * @found_vport_wwpn: Pointer to the found lun's vport wwpn information 6532 * @found_target_wwpn: Pointer to the found lun's target wwpn information 6533 * @found_lun: Pointer to the found lun. 6534 * @found_lun_status: Pointer to status of the found lun. 6535 * @found_lun_pri: Pointer to priority of the found lun. 6536 * 6537 * This routine searches the luns list for the specified lun 6538 * or the first lun for the vport/target. If the vport wwpn contains 6539 * a zero value then a specific vport is not specified. In this case 6540 * any vport which contains the lun will be considered a match. If the 6541 * target wwpn contains a zero value then a specific target is not specified. 6542 * In this case any target which contains the lun will be considered a 6543 * match. If the lun is found, the lun, vport wwpn, target wwpn and lun status 6544 * are returned. The function will also return the next lun if available. 6545 * If the next lun is not found, starting_lun parameter will be set to 6546 * NO_MORE_OAS_LUN. 6547 * 6548 * Return codes: 6549 * non-0 - Error 6550 * 0 - Success 6551 **/ 6552 bool 6553 lpfc_find_next_oas_lun(struct lpfc_hba *phba, struct lpfc_name *vport_wwpn, 6554 struct lpfc_name *target_wwpn, uint64_t *starting_lun, 6555 struct lpfc_name *found_vport_wwpn, 6556 struct lpfc_name *found_target_wwpn, 6557 uint64_t *found_lun, 6558 uint32_t *found_lun_status, 6559 uint32_t *found_lun_pri) 6560 { 6561 6562 unsigned long flags; 6563 struct lpfc_device_data *lun_info; 6564 struct lpfc_device_id *device_id; 6565 uint64_t lun; 6566 bool found = false; 6567 6568 if (unlikely(!phba) || !vport_wwpn || !target_wwpn || 6569 !starting_lun || !found_vport_wwpn || 6570 !found_target_wwpn || !found_lun || !found_lun_status || 6571 (*starting_lun == NO_MORE_OAS_LUN) || 6572 !phba->cfg_fof) 6573 return false; 6574 6575 lun = *starting_lun; 6576 *found_lun = NO_MORE_OAS_LUN; 6577 *starting_lun = NO_MORE_OAS_LUN; 6578 6579 /* Search for lun or the lun closet in value */ 6580 6581 spin_lock_irqsave(&phba->devicelock, flags); 6582 list_for_each_entry(lun_info, &phba->luns, listentry) { 6583 if (((wwn_to_u64(vport_wwpn->u.wwn) == 0) || 6584 (memcmp(&lun_info->device_id.vport_wwpn, vport_wwpn, 6585 sizeof(struct lpfc_name)) == 0)) && 6586 ((wwn_to_u64(target_wwpn->u.wwn) == 0) || 6587 (memcmp(&lun_info->device_id.target_wwpn, target_wwpn, 6588 sizeof(struct lpfc_name)) == 0)) && 6589 (lun_info->oas_enabled)) { 6590 device_id = &lun_info->device_id; 6591 if ((!found) && 6592 ((lun == FIND_FIRST_OAS_LUN) || 6593 (device_id->lun == lun))) { 6594 *found_lun = device_id->lun; 6595 memcpy(found_vport_wwpn, 6596 &device_id->vport_wwpn, 6597 sizeof(struct lpfc_name)); 6598 memcpy(found_target_wwpn, 6599 &device_id->target_wwpn, 6600 sizeof(struct lpfc_name)); 6601 if (lun_info->available) 6602 *found_lun_status = 6603 OAS_LUN_STATUS_EXISTS; 6604 else 6605 *found_lun_status = 0; 6606 *found_lun_pri = lun_info->priority; 6607 if (phba->cfg_oas_flags & OAS_FIND_ANY_VPORT) 6608 memset(vport_wwpn, 0x0, 6609 sizeof(struct lpfc_name)); 6610 if (phba->cfg_oas_flags & OAS_FIND_ANY_TARGET) 6611 memset(target_wwpn, 0x0, 6612 sizeof(struct lpfc_name)); 6613 found = true; 6614 } else if (found) { 6615 *starting_lun = device_id->lun; 6616 memcpy(vport_wwpn, &device_id->vport_wwpn, 6617 sizeof(struct lpfc_name)); 6618 memcpy(target_wwpn, &device_id->target_wwpn, 6619 sizeof(struct lpfc_name)); 6620 break; 6621 } 6622 } 6623 } 6624 spin_unlock_irqrestore(&phba->devicelock, flags); 6625 return found; 6626 } 6627 6628 /** 6629 * lpfc_enable_oas_lun - enables a lun for OAS operations 6630 * @phba: Pointer to host bus adapter structure. 6631 * @vport_wwpn: Pointer to vport's wwpn information 6632 * @target_wwpn: Pointer to target's wwpn information 6633 * @lun: Lun 6634 * @pri: Priority 6635 * 6636 * This routine enables a lun for oas operations. The routines does so by 6637 * doing the following : 6638 * 6639 * 1) Checks to see if the device data for the lun has been created. 6640 * 2) If found, sets the OAS enabled flag if not set and returns. 6641 * 3) Otherwise, creates a device data structure. 6642 * 4) If successfully created, indicates the device data is for an OAS lun, 6643 * indicates the lun is not available and add to the list of luns. 6644 * 6645 * Return codes: 6646 * false - Error 6647 * true - Success 6648 **/ 6649 bool 6650 lpfc_enable_oas_lun(struct lpfc_hba *phba, struct lpfc_name *vport_wwpn, 6651 struct lpfc_name *target_wwpn, uint64_t lun, uint8_t pri) 6652 { 6653 6654 struct lpfc_device_data *lun_info; 6655 unsigned long flags; 6656 6657 if (unlikely(!phba) || !vport_wwpn || !target_wwpn || 6658 !phba->cfg_fof) 6659 return false; 6660 6661 spin_lock_irqsave(&phba->devicelock, flags); 6662 6663 /* Check to see if the device data for the lun has been created */ 6664 lun_info = __lpfc_get_device_data(phba, &phba->luns, vport_wwpn, 6665 target_wwpn, lun); 6666 if (lun_info) { 6667 if (!lun_info->oas_enabled) 6668 lun_info->oas_enabled = true; 6669 lun_info->priority = pri; 6670 spin_unlock_irqrestore(&phba->devicelock, flags); 6671 return true; 6672 } 6673 6674 /* Create an lun info structure and add to list of luns */ 6675 lun_info = lpfc_create_device_data(phba, vport_wwpn, target_wwpn, lun, 6676 pri, true); 6677 if (lun_info) { 6678 lun_info->oas_enabled = true; 6679 lun_info->priority = pri; 6680 lun_info->available = false; 6681 list_add_tail(&lun_info->listentry, &phba->luns); 6682 spin_unlock_irqrestore(&phba->devicelock, flags); 6683 return true; 6684 } 6685 spin_unlock_irqrestore(&phba->devicelock, flags); 6686 return false; 6687 } 6688 6689 /** 6690 * lpfc_disable_oas_lun - disables a lun for OAS operations 6691 * @phba: Pointer to host bus adapter structure. 6692 * @vport_wwpn: Pointer to vport's wwpn information 6693 * @target_wwpn: Pointer to target's wwpn information 6694 * @lun: Lun 6695 * @pri: Priority 6696 * 6697 * This routine disables a lun for oas operations. The routines does so by 6698 * doing the following : 6699 * 6700 * 1) Checks to see if the device data for the lun is created. 6701 * 2) If present, clears the flag indicating this lun is for OAS. 6702 * 3) If the lun is not available by the system, the device data is 6703 * freed. 6704 * 6705 * Return codes: 6706 * false - Error 6707 * true - Success 6708 **/ 6709 bool 6710 lpfc_disable_oas_lun(struct lpfc_hba *phba, struct lpfc_name *vport_wwpn, 6711 struct lpfc_name *target_wwpn, uint64_t lun, uint8_t pri) 6712 { 6713 6714 struct lpfc_device_data *lun_info; 6715 unsigned long flags; 6716 6717 if (unlikely(!phba) || !vport_wwpn || !target_wwpn || 6718 !phba->cfg_fof) 6719 return false; 6720 6721 spin_lock_irqsave(&phba->devicelock, flags); 6722 6723 /* Check to see if the lun is available. */ 6724 lun_info = __lpfc_get_device_data(phba, 6725 &phba->luns, vport_wwpn, 6726 target_wwpn, lun); 6727 if (lun_info) { 6728 lun_info->oas_enabled = false; 6729 lun_info->priority = pri; 6730 if (!lun_info->available) 6731 lpfc_delete_device_data(phba, lun_info); 6732 spin_unlock_irqrestore(&phba->devicelock, flags); 6733 return true; 6734 } 6735 6736 spin_unlock_irqrestore(&phba->devicelock, flags); 6737 return false; 6738 } 6739 6740 static int 6741 lpfc_no_command(struct Scsi_Host *shost, struct scsi_cmnd *cmnd) 6742 { 6743 return SCSI_MLQUEUE_HOST_BUSY; 6744 } 6745 6746 static int 6747 lpfc_no_slave(struct scsi_device *sdev) 6748 { 6749 return -ENODEV; 6750 } 6751 6752 struct scsi_host_template lpfc_template_nvme = { 6753 .module = THIS_MODULE, 6754 .name = LPFC_DRIVER_NAME, 6755 .proc_name = LPFC_DRIVER_NAME, 6756 .info = lpfc_info, 6757 .queuecommand = lpfc_no_command, 6758 .slave_alloc = lpfc_no_slave, 6759 .slave_configure = lpfc_no_slave, 6760 .scan_finished = lpfc_scan_finished, 6761 .this_id = -1, 6762 .sg_tablesize = 1, 6763 .cmd_per_lun = 1, 6764 .shost_groups = lpfc_hba_groups, 6765 .max_sectors = 0xFFFFFFFF, 6766 .vendor_id = LPFC_NL_VENDOR_ID, 6767 .track_queue_depth = 0, 6768 }; 6769 6770 struct scsi_host_template lpfc_template = { 6771 .module = THIS_MODULE, 6772 .name = LPFC_DRIVER_NAME, 6773 .proc_name = LPFC_DRIVER_NAME, 6774 .info = lpfc_info, 6775 .queuecommand = lpfc_queuecommand, 6776 .eh_timed_out = fc_eh_timed_out, 6777 .eh_should_retry_cmd = fc_eh_should_retry_cmd, 6778 .eh_abort_handler = lpfc_abort_handler, 6779 .eh_device_reset_handler = lpfc_device_reset_handler, 6780 .eh_target_reset_handler = lpfc_target_reset_handler, 6781 .eh_host_reset_handler = lpfc_host_reset_handler, 6782 .slave_alloc = lpfc_slave_alloc, 6783 .slave_configure = lpfc_slave_configure, 6784 .slave_destroy = lpfc_slave_destroy, 6785 .scan_finished = lpfc_scan_finished, 6786 .this_id = -1, 6787 .sg_tablesize = LPFC_DEFAULT_SG_SEG_CNT, 6788 .cmd_per_lun = LPFC_CMD_PER_LUN, 6789 .shost_groups = lpfc_hba_groups, 6790 .max_sectors = 0xFFFFFFFF, 6791 .vendor_id = LPFC_NL_VENDOR_ID, 6792 .change_queue_depth = scsi_change_queue_depth, 6793 .track_queue_depth = 1, 6794 }; 6795 6796 struct scsi_host_template lpfc_vport_template = { 6797 .module = THIS_MODULE, 6798 .name = LPFC_DRIVER_NAME, 6799 .proc_name = LPFC_DRIVER_NAME, 6800 .info = lpfc_info, 6801 .queuecommand = lpfc_queuecommand, 6802 .eh_timed_out = fc_eh_timed_out, 6803 .eh_should_retry_cmd = fc_eh_should_retry_cmd, 6804 .eh_abort_handler = lpfc_abort_handler, 6805 .eh_device_reset_handler = lpfc_device_reset_handler, 6806 .eh_target_reset_handler = lpfc_target_reset_handler, 6807 .eh_bus_reset_handler = NULL, 6808 .eh_host_reset_handler = NULL, 6809 .slave_alloc = lpfc_slave_alloc, 6810 .slave_configure = lpfc_slave_configure, 6811 .slave_destroy = lpfc_slave_destroy, 6812 .scan_finished = lpfc_scan_finished, 6813 .this_id = -1, 6814 .sg_tablesize = LPFC_DEFAULT_SG_SEG_CNT, 6815 .cmd_per_lun = LPFC_CMD_PER_LUN, 6816 .shost_groups = lpfc_vport_groups, 6817 .max_sectors = 0xFFFFFFFF, 6818 .vendor_id = 0, 6819 .change_queue_depth = scsi_change_queue_depth, 6820 .track_queue_depth = 1, 6821 }; 6822