1 /******************************************************************* 2 * This file is part of the Emulex Linux Device Driver for * 3 * Fibre Channel Host Bus Adapters. * 4 * Copyright (C) 2017-2022 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/delay.h> 27 #include <asm/unaligned.h> 28 #include <linux/crc-t10dif.h> 29 #include <net/checksum.h> 30 31 #include <scsi/scsi.h> 32 #include <scsi/scsi_device.h> 33 #include <scsi/scsi_eh.h> 34 #include <scsi/scsi_host.h> 35 #include <scsi/scsi_tcq.h> 36 #include <scsi/scsi_transport_fc.h> 37 #include <scsi/fc/fc_fs.h> 38 39 #include "lpfc_version.h" 40 #include "lpfc_hw4.h" 41 #include "lpfc_hw.h" 42 #include "lpfc_sli.h" 43 #include "lpfc_sli4.h" 44 #include "lpfc_nl.h" 45 #include "lpfc_disc.h" 46 #include "lpfc.h" 47 #include "lpfc_nvme.h" 48 #include "lpfc_scsi.h" 49 #include "lpfc_logmsg.h" 50 #include "lpfc_crtn.h" 51 #include "lpfc_vport.h" 52 #include "lpfc_debugfs.h" 53 54 /* NVME initiator-based functions */ 55 56 static struct lpfc_io_buf * 57 lpfc_get_nvme_buf(struct lpfc_hba *phba, struct lpfc_nodelist *ndlp, 58 int idx, int expedite); 59 60 static void 61 lpfc_release_nvme_buf(struct lpfc_hba *, struct lpfc_io_buf *); 62 63 static struct nvme_fc_port_template lpfc_nvme_template; 64 65 /** 66 * lpfc_nvme_create_queue - 67 * @pnvme_lport: Transport localport that LS is to be issued from 68 * @qidx: An cpu index used to affinitize IO queues and MSIX vectors. 69 * @qsize: Size of the queue in bytes 70 * @handle: An opaque driver handle used in follow-up calls. 71 * 72 * Driver registers this routine to preallocate and initialize any 73 * internal data structures to bind the @qidx to its internal IO queues. 74 * A hardware queue maps (qidx) to a specific driver MSI-X vector/EQ/CQ/WQ. 75 * 76 * Return value : 77 * 0 - Success 78 * -EINVAL - Unsupported input value. 79 * -ENOMEM - Could not alloc necessary memory 80 **/ 81 static int 82 lpfc_nvme_create_queue(struct nvme_fc_local_port *pnvme_lport, 83 unsigned int qidx, u16 qsize, 84 void **handle) 85 { 86 struct lpfc_nvme_lport *lport; 87 struct lpfc_vport *vport; 88 struct lpfc_nvme_qhandle *qhandle; 89 char *str; 90 91 if (!pnvme_lport->private) 92 return -ENOMEM; 93 94 lport = (struct lpfc_nvme_lport *)pnvme_lport->private; 95 vport = lport->vport; 96 97 if (!vport || vport->load_flag & FC_UNLOADING || 98 vport->phba->hba_flag & HBA_IOQ_FLUSH) 99 return -ENODEV; 100 101 qhandle = kzalloc(sizeof(struct lpfc_nvme_qhandle), GFP_KERNEL); 102 if (qhandle == NULL) 103 return -ENOMEM; 104 105 qhandle->cpu_id = raw_smp_processor_id(); 106 qhandle->qidx = qidx; 107 /* 108 * NVME qidx == 0 is the admin queue, so both admin queue 109 * and first IO queue will use MSI-X vector and associated 110 * EQ/CQ/WQ at index 0. After that they are sequentially assigned. 111 */ 112 if (qidx) { 113 str = "IO "; /* IO queue */ 114 qhandle->index = ((qidx - 1) % 115 lpfc_nvme_template.max_hw_queues); 116 } else { 117 str = "ADM"; /* Admin queue */ 118 qhandle->index = qidx; 119 } 120 121 lpfc_printf_vlog(vport, KERN_INFO, LOG_NVME, 122 "6073 Binding %s HdwQueue %d (cpu %d) to " 123 "hdw_queue %d qhandle x%px\n", str, 124 qidx, qhandle->cpu_id, qhandle->index, qhandle); 125 *handle = (void *)qhandle; 126 return 0; 127 } 128 129 /** 130 * lpfc_nvme_delete_queue - 131 * @pnvme_lport: Transport localport that LS is to be issued from 132 * @qidx: An cpu index used to affinitize IO queues and MSIX vectors. 133 * @handle: An opaque driver handle from lpfc_nvme_create_queue 134 * 135 * Driver registers this routine to free 136 * any internal data structures to bind the @qidx to its internal 137 * IO queues. 138 * 139 * Return value : 140 * 0 - Success 141 * TODO: What are the failure codes. 142 **/ 143 static void 144 lpfc_nvme_delete_queue(struct nvme_fc_local_port *pnvme_lport, 145 unsigned int qidx, 146 void *handle) 147 { 148 struct lpfc_nvme_lport *lport; 149 struct lpfc_vport *vport; 150 151 if (!pnvme_lport->private) 152 return; 153 154 lport = (struct lpfc_nvme_lport *)pnvme_lport->private; 155 vport = lport->vport; 156 157 lpfc_printf_vlog(vport, KERN_INFO, LOG_NVME, 158 "6001 ENTER. lpfc_pnvme x%px, qidx x%x qhandle x%px\n", 159 lport, qidx, handle); 160 kfree(handle); 161 } 162 163 static void 164 lpfc_nvme_localport_delete(struct nvme_fc_local_port *localport) 165 { 166 struct lpfc_nvme_lport *lport = localport->private; 167 168 lpfc_printf_vlog(lport->vport, KERN_INFO, LOG_NVME, 169 "6173 localport x%px delete complete\n", 170 lport); 171 172 /* release any threads waiting for the unreg to complete */ 173 if (lport->vport->localport) 174 complete(lport->lport_unreg_cmp); 175 } 176 177 /* lpfc_nvme_remoteport_delete 178 * 179 * @remoteport: Pointer to an nvme transport remoteport instance. 180 * 181 * This is a template downcall. NVME transport calls this function 182 * when it has completed the unregistration of a previously 183 * registered remoteport. 184 * 185 * Return value : 186 * None 187 */ 188 static void 189 lpfc_nvme_remoteport_delete(struct nvme_fc_remote_port *remoteport) 190 { 191 struct lpfc_nvme_rport *rport = remoteport->private; 192 struct lpfc_vport *vport; 193 struct lpfc_nodelist *ndlp; 194 u32 fc4_xpt_flags; 195 196 ndlp = rport->ndlp; 197 if (!ndlp) { 198 pr_err("**** %s: NULL ndlp on rport x%px remoteport x%px\n", 199 __func__, rport, remoteport); 200 goto rport_err; 201 } 202 203 vport = ndlp->vport; 204 if (!vport) { 205 pr_err("**** %s: Null vport on ndlp x%px, ste x%x rport x%px\n", 206 __func__, ndlp, ndlp->nlp_state, rport); 207 goto rport_err; 208 } 209 210 fc4_xpt_flags = NVME_XPT_REGD | SCSI_XPT_REGD; 211 212 /* Remove this rport from the lport's list - memory is owned by the 213 * transport. Remove the ndlp reference for the NVME transport before 214 * calling state machine to remove the node. 215 */ 216 lpfc_printf_vlog(vport, KERN_INFO, LOG_NVME_DISC, 217 "6146 remoteport delete of remoteport x%px, ndlp x%px " 218 "DID x%x xflags x%x\n", 219 remoteport, ndlp, ndlp->nlp_DID, ndlp->fc4_xpt_flags); 220 spin_lock_irq(&ndlp->lock); 221 222 /* The register rebind might have occurred before the delete 223 * downcall. Guard against this race. 224 */ 225 if (ndlp->fc4_xpt_flags & NVME_XPT_UNREG_WAIT) 226 ndlp->fc4_xpt_flags &= ~(NVME_XPT_UNREG_WAIT | NVME_XPT_REGD); 227 228 spin_unlock_irq(&ndlp->lock); 229 230 /* On a devloss timeout event, one more put is executed provided the 231 * NVME and SCSI rport unregister requests are complete. If the vport 232 * is unloading, this extra put is executed by lpfc_drop_node. 233 */ 234 if (!(ndlp->fc4_xpt_flags & fc4_xpt_flags)) 235 lpfc_disc_state_machine(vport, ndlp, NULL, NLP_EVT_DEVICE_RM); 236 237 rport_err: 238 return; 239 } 240 241 /** 242 * lpfc_nvme_handle_lsreq - Process an unsolicited NVME LS request 243 * @phba: pointer to lpfc hba data structure. 244 * @axchg: pointer to exchange context for the NVME LS request 245 * 246 * This routine is used for processing an asychronously received NVME LS 247 * request. Any remaining validation is done and the LS is then forwarded 248 * to the nvme-fc transport via nvme_fc_rcv_ls_req(). 249 * 250 * The calling sequence should be: nvme_fc_rcv_ls_req() -> (processing) 251 * -> lpfc_nvme_xmt_ls_rsp/cmp -> req->done. 252 * __lpfc_nvme_xmt_ls_rsp_cmp should free the allocated axchg. 253 * 254 * Returns 0 if LS was handled and delivered to the transport 255 * Returns 1 if LS failed to be handled and should be dropped 256 */ 257 int 258 lpfc_nvme_handle_lsreq(struct lpfc_hba *phba, 259 struct lpfc_async_xchg_ctx *axchg) 260 { 261 #if (IS_ENABLED(CONFIG_NVME_FC)) 262 struct lpfc_vport *vport; 263 struct lpfc_nvme_rport *lpfc_rport; 264 struct nvme_fc_remote_port *remoteport; 265 struct lpfc_nvme_lport *lport; 266 uint32_t *payload = axchg->payload; 267 int rc; 268 269 vport = axchg->ndlp->vport; 270 lpfc_rport = axchg->ndlp->nrport; 271 if (!lpfc_rport) 272 return -EINVAL; 273 274 remoteport = lpfc_rport->remoteport; 275 if (!vport->localport || 276 vport->phba->hba_flag & HBA_IOQ_FLUSH) 277 return -EINVAL; 278 279 lport = vport->localport->private; 280 if (!lport) 281 return -EINVAL; 282 283 rc = nvme_fc_rcv_ls_req(remoteport, &axchg->ls_rsp, axchg->payload, 284 axchg->size); 285 286 lpfc_printf_log(phba, KERN_INFO, LOG_NVME_DISC, 287 "6205 NVME Unsol rcv: sz %d rc %d: %08x %08x %08x " 288 "%08x %08x %08x\n", 289 axchg->size, rc, 290 *payload, *(payload+1), *(payload+2), 291 *(payload+3), *(payload+4), *(payload+5)); 292 293 if (!rc) 294 return 0; 295 #endif 296 return 1; 297 } 298 299 /** 300 * __lpfc_nvme_ls_req_cmp - Generic completion handler for a NVME 301 * LS request. 302 * @phba: Pointer to HBA context object 303 * @vport: The local port that issued the LS 304 * @cmdwqe: Pointer to driver command WQE object. 305 * @wcqe: Pointer to driver response CQE object. 306 * 307 * This function is the generic completion handler for NVME LS requests. 308 * The function updates any states and statistics, calls the transport 309 * ls_req done() routine, then tears down the command and buffers used 310 * for the LS request. 311 **/ 312 void 313 __lpfc_nvme_ls_req_cmp(struct lpfc_hba *phba, struct lpfc_vport *vport, 314 struct lpfc_iocbq *cmdwqe, 315 struct lpfc_wcqe_complete *wcqe) 316 { 317 struct nvmefc_ls_req *pnvme_lsreq; 318 struct lpfc_dmabuf *buf_ptr; 319 struct lpfc_nodelist *ndlp; 320 uint32_t status; 321 322 pnvme_lsreq = cmdwqe->context_un.nvme_lsreq; 323 ndlp = cmdwqe->ndlp; 324 buf_ptr = cmdwqe->bpl_dmabuf; 325 326 status = bf_get(lpfc_wcqe_c_status, wcqe) & LPFC_IOCB_STATUS_MASK; 327 328 lpfc_printf_vlog(vport, KERN_INFO, LOG_NVME_DISC, 329 "6047 NVMEx LS REQ x%px cmpl DID %x Xri: %x " 330 "status %x reason x%x cmd:x%px lsreg:x%px bmp:x%px " 331 "ndlp:x%px\n", 332 pnvme_lsreq, ndlp ? ndlp->nlp_DID : 0, 333 cmdwqe->sli4_xritag, status, 334 (wcqe->parameter & 0xffff), 335 cmdwqe, pnvme_lsreq, cmdwqe->bpl_dmabuf, 336 ndlp); 337 338 lpfc_nvmeio_data(phba, "NVMEx LS CMPL: xri x%x stat x%x parm x%x\n", 339 cmdwqe->sli4_xritag, status, wcqe->parameter); 340 341 if (buf_ptr) { 342 lpfc_mbuf_free(phba, buf_ptr->virt, buf_ptr->phys); 343 kfree(buf_ptr); 344 cmdwqe->bpl_dmabuf = NULL; 345 } 346 if (pnvme_lsreq->done) 347 pnvme_lsreq->done(pnvme_lsreq, status); 348 else 349 lpfc_printf_vlog(vport, KERN_ERR, LOG_TRACE_EVENT, 350 "6046 NVMEx cmpl without done call back? " 351 "Data x%px DID %x Xri: %x status %x\n", 352 pnvme_lsreq, ndlp ? ndlp->nlp_DID : 0, 353 cmdwqe->sli4_xritag, status); 354 if (ndlp) { 355 lpfc_nlp_put(ndlp); 356 cmdwqe->ndlp = NULL; 357 } 358 lpfc_sli_release_iocbq(phba, cmdwqe); 359 } 360 361 static void 362 lpfc_nvme_ls_req_cmp(struct lpfc_hba *phba, struct lpfc_iocbq *cmdwqe, 363 struct lpfc_iocbq *rspwqe) 364 { 365 struct lpfc_vport *vport = cmdwqe->vport; 366 struct lpfc_nvme_lport *lport; 367 uint32_t status; 368 struct lpfc_wcqe_complete *wcqe = &rspwqe->wcqe_cmpl; 369 370 status = bf_get(lpfc_wcqe_c_status, wcqe) & LPFC_IOCB_STATUS_MASK; 371 372 if (vport->localport) { 373 lport = (struct lpfc_nvme_lport *)vport->localport->private; 374 if (lport) { 375 atomic_inc(&lport->fc4NvmeLsCmpls); 376 if (status) { 377 if (bf_get(lpfc_wcqe_c_xb, wcqe)) 378 atomic_inc(&lport->cmpl_ls_xb); 379 atomic_inc(&lport->cmpl_ls_err); 380 } 381 } 382 } 383 384 __lpfc_nvme_ls_req_cmp(phba, vport, cmdwqe, wcqe); 385 } 386 387 static int 388 lpfc_nvme_gen_req(struct lpfc_vport *vport, struct lpfc_dmabuf *bmp, 389 struct lpfc_dmabuf *inp, 390 struct nvmefc_ls_req *pnvme_lsreq, 391 void (*cmpl)(struct lpfc_hba *, struct lpfc_iocbq *, 392 struct lpfc_iocbq *), 393 struct lpfc_nodelist *ndlp, uint32_t num_entry, 394 uint32_t tmo, uint8_t retry) 395 { 396 struct lpfc_hba *phba = vport->phba; 397 union lpfc_wqe128 *wqe; 398 struct lpfc_iocbq *genwqe; 399 struct ulp_bde64 *bpl; 400 struct ulp_bde64 bde; 401 int i, rc, xmit_len, first_len; 402 403 /* Allocate buffer for command WQE */ 404 genwqe = lpfc_sli_get_iocbq(phba); 405 if (genwqe == NULL) 406 return 1; 407 408 wqe = &genwqe->wqe; 409 /* Initialize only 64 bytes */ 410 memset(wqe, 0, sizeof(union lpfc_wqe)); 411 412 genwqe->bpl_dmabuf = bmp; 413 genwqe->cmd_flag |= LPFC_IO_NVME_LS; 414 415 /* Save for completion so we can release these resources */ 416 genwqe->ndlp = lpfc_nlp_get(ndlp); 417 if (!genwqe->ndlp) { 418 dev_warn(&phba->pcidev->dev, 419 "Warning: Failed node ref, not sending LS_REQ\n"); 420 lpfc_sli_release_iocbq(phba, genwqe); 421 return 1; 422 } 423 424 genwqe->context_un.nvme_lsreq = pnvme_lsreq; 425 /* Fill in payload, bp points to frame payload */ 426 427 if (!tmo) 428 /* FC spec states we need 3 * ratov for CT requests */ 429 tmo = (3 * phba->fc_ratov); 430 431 /* For this command calculate the xmit length of the request bde. */ 432 xmit_len = 0; 433 first_len = 0; 434 bpl = (struct ulp_bde64 *)bmp->virt; 435 for (i = 0; i < num_entry; i++) { 436 bde.tus.w = bpl[i].tus.w; 437 if (bde.tus.f.bdeFlags != BUFF_TYPE_BDE_64) 438 break; 439 xmit_len += bde.tus.f.bdeSize; 440 if (i == 0) 441 first_len = xmit_len; 442 } 443 444 genwqe->num_bdes = num_entry; 445 genwqe->hba_wqidx = 0; 446 447 /* Words 0 - 2 */ 448 wqe->generic.bde.tus.f.bdeFlags = BUFF_TYPE_BDE_64; 449 wqe->generic.bde.tus.f.bdeSize = first_len; 450 wqe->generic.bde.addrLow = bpl[0].addrLow; 451 wqe->generic.bde.addrHigh = bpl[0].addrHigh; 452 453 /* Word 3 */ 454 wqe->gen_req.request_payload_len = first_len; 455 456 /* Word 4 */ 457 458 /* Word 5 */ 459 bf_set(wqe_dfctl, &wqe->gen_req.wge_ctl, 0); 460 bf_set(wqe_si, &wqe->gen_req.wge_ctl, 1); 461 bf_set(wqe_la, &wqe->gen_req.wge_ctl, 1); 462 bf_set(wqe_rctl, &wqe->gen_req.wge_ctl, FC_RCTL_ELS4_REQ); 463 bf_set(wqe_type, &wqe->gen_req.wge_ctl, FC_TYPE_NVME); 464 465 /* Word 6 */ 466 bf_set(wqe_ctxt_tag, &wqe->gen_req.wqe_com, 467 phba->sli4_hba.rpi_ids[ndlp->nlp_rpi]); 468 bf_set(wqe_xri_tag, &wqe->gen_req.wqe_com, genwqe->sli4_xritag); 469 470 /* Word 7 */ 471 bf_set(wqe_tmo, &wqe->gen_req.wqe_com, tmo); 472 bf_set(wqe_class, &wqe->gen_req.wqe_com, CLASS3); 473 bf_set(wqe_cmnd, &wqe->gen_req.wqe_com, CMD_GEN_REQUEST64_WQE); 474 bf_set(wqe_ct, &wqe->gen_req.wqe_com, SLI4_CT_RPI); 475 476 /* Word 8 */ 477 wqe->gen_req.wqe_com.abort_tag = genwqe->iotag; 478 479 /* Word 9 */ 480 bf_set(wqe_reqtag, &wqe->gen_req.wqe_com, genwqe->iotag); 481 482 /* Word 10 */ 483 bf_set(wqe_dbde, &wqe->gen_req.wqe_com, 1); 484 bf_set(wqe_iod, &wqe->gen_req.wqe_com, LPFC_WQE_IOD_READ); 485 bf_set(wqe_qosd, &wqe->gen_req.wqe_com, 1); 486 bf_set(wqe_lenloc, &wqe->gen_req.wqe_com, LPFC_WQE_LENLOC_NONE); 487 bf_set(wqe_ebde_cnt, &wqe->gen_req.wqe_com, 0); 488 489 /* Word 11 */ 490 bf_set(wqe_cqid, &wqe->gen_req.wqe_com, LPFC_WQE_CQ_ID_DEFAULT); 491 bf_set(wqe_cmd_type, &wqe->gen_req.wqe_com, OTHER_COMMAND); 492 493 494 /* Issue GEN REQ WQE for NPORT <did> */ 495 genwqe->cmd_cmpl = cmpl; 496 genwqe->drvrTimeout = tmo + LPFC_DRVR_TIMEOUT; 497 genwqe->vport = vport; 498 genwqe->retry = retry; 499 500 lpfc_nvmeio_data(phba, "NVME LS XMIT: xri x%x iotag x%x to x%06x\n", 501 genwqe->sli4_xritag, genwqe->iotag, ndlp->nlp_DID); 502 503 rc = lpfc_sli4_issue_wqe(phba, &phba->sli4_hba.hdwq[0], genwqe); 504 if (rc) { 505 lpfc_printf_vlog(vport, KERN_ERR, LOG_TRACE_EVENT, 506 "6045 Issue GEN REQ WQE to NPORT x%x " 507 "Data: x%x x%x rc x%x\n", 508 ndlp->nlp_DID, genwqe->iotag, 509 vport->port_state, rc); 510 lpfc_nlp_put(ndlp); 511 lpfc_sli_release_iocbq(phba, genwqe); 512 return 1; 513 } 514 515 lpfc_printf_vlog(vport, KERN_INFO, LOG_NVME_DISC | LOG_ELS, 516 "6050 Issue GEN REQ WQE to NPORT x%x " 517 "Data: oxid: x%x state: x%x wq:x%px lsreq:x%px " 518 "bmp:x%px xmit:%d 1st:%d\n", 519 ndlp->nlp_DID, genwqe->sli4_xritag, 520 vport->port_state, 521 genwqe, pnvme_lsreq, bmp, xmit_len, first_len); 522 return 0; 523 } 524 525 526 /** 527 * __lpfc_nvme_ls_req - Generic service routine to issue an NVME LS request 528 * @vport: The local port issuing the LS 529 * @ndlp: The remote port to send the LS to 530 * @pnvme_lsreq: Pointer to LS request structure from the transport 531 * @gen_req_cmp: Completion call-back 532 * 533 * Routine validates the ndlp, builds buffers and sends a GEN_REQUEST 534 * WQE to perform the LS operation. 535 * 536 * Return value : 537 * 0 - Success 538 * non-zero: various error codes, in form of -Exxx 539 **/ 540 int 541 __lpfc_nvme_ls_req(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp, 542 struct nvmefc_ls_req *pnvme_lsreq, 543 void (*gen_req_cmp)(struct lpfc_hba *phba, 544 struct lpfc_iocbq *cmdwqe, 545 struct lpfc_iocbq *rspwqe)) 546 { 547 struct lpfc_dmabuf *bmp; 548 struct ulp_bde64 *bpl; 549 int ret; 550 uint16_t ntype, nstate; 551 552 if (!ndlp) { 553 lpfc_printf_vlog(vport, KERN_ERR, LOG_TRACE_EVENT, 554 "6051 NVMEx LS REQ: Bad NDLP x%px, Failing " 555 "LS Req\n", 556 ndlp); 557 return -ENODEV; 558 } 559 560 ntype = ndlp->nlp_type; 561 nstate = ndlp->nlp_state; 562 if ((ntype & NLP_NVME_TARGET && nstate != NLP_STE_MAPPED_NODE) || 563 (ntype & NLP_NVME_INITIATOR && nstate != NLP_STE_UNMAPPED_NODE)) { 564 lpfc_printf_vlog(vport, KERN_ERR, LOG_TRACE_EVENT, 565 "6088 NVMEx LS REQ: Fail DID x%06x not " 566 "ready for IO. Type x%x, State x%x\n", 567 ndlp->nlp_DID, ntype, nstate); 568 return -ENODEV; 569 } 570 if (vport->phba->hba_flag & HBA_IOQ_FLUSH) 571 return -ENODEV; 572 573 if (!vport->phba->sli4_hba.nvmels_wq) 574 return -ENOMEM; 575 576 /* 577 * there are two dma buf in the request, actually there is one and 578 * the second one is just the start address + cmd size. 579 * Before calling lpfc_nvme_gen_req these buffers need to be wrapped 580 * in a lpfc_dmabuf struct. When freeing we just free the wrapper 581 * because the nvem layer owns the data bufs. 582 * We do not have to break these packets open, we don't care what is 583 * in them. And we do not have to look at the resonse data, we only 584 * care that we got a response. All of the caring is going to happen 585 * in the nvme-fc layer. 586 */ 587 588 bmp = kmalloc(sizeof(*bmp), GFP_KERNEL); 589 if (!bmp) { 590 lpfc_printf_vlog(vport, KERN_ERR, LOG_TRACE_EVENT, 591 "6044 NVMEx LS REQ: Could not alloc LS buf " 592 "for DID %x\n", 593 ndlp->nlp_DID); 594 return -ENOMEM; 595 } 596 597 bmp->virt = lpfc_mbuf_alloc(vport->phba, MEM_PRI, &(bmp->phys)); 598 if (!bmp->virt) { 599 lpfc_printf_vlog(vport, KERN_ERR, LOG_TRACE_EVENT, 600 "6042 NVMEx LS REQ: Could not alloc mbuf " 601 "for DID %x\n", 602 ndlp->nlp_DID); 603 kfree(bmp); 604 return -ENOMEM; 605 } 606 607 INIT_LIST_HEAD(&bmp->list); 608 609 bpl = (struct ulp_bde64 *)bmp->virt; 610 bpl->addrHigh = le32_to_cpu(putPaddrHigh(pnvme_lsreq->rqstdma)); 611 bpl->addrLow = le32_to_cpu(putPaddrLow(pnvme_lsreq->rqstdma)); 612 bpl->tus.f.bdeFlags = 0; 613 bpl->tus.f.bdeSize = pnvme_lsreq->rqstlen; 614 bpl->tus.w = le32_to_cpu(bpl->tus.w); 615 bpl++; 616 617 bpl->addrHigh = le32_to_cpu(putPaddrHigh(pnvme_lsreq->rspdma)); 618 bpl->addrLow = le32_to_cpu(putPaddrLow(pnvme_lsreq->rspdma)); 619 bpl->tus.f.bdeFlags = BUFF_TYPE_BDE_64I; 620 bpl->tus.f.bdeSize = pnvme_lsreq->rsplen; 621 bpl->tus.w = le32_to_cpu(bpl->tus.w); 622 623 lpfc_printf_vlog(vport, KERN_INFO, LOG_NVME_DISC, 624 "6149 NVMEx LS REQ: Issue to DID 0x%06x lsreq x%px, " 625 "rqstlen:%d rsplen:%d %pad %pad\n", 626 ndlp->nlp_DID, pnvme_lsreq, pnvme_lsreq->rqstlen, 627 pnvme_lsreq->rsplen, &pnvme_lsreq->rqstdma, 628 &pnvme_lsreq->rspdma); 629 630 ret = lpfc_nvme_gen_req(vport, bmp, pnvme_lsreq->rqstaddr, 631 pnvme_lsreq, gen_req_cmp, ndlp, 2, 632 pnvme_lsreq->timeout, 0); 633 if (ret != WQE_SUCCESS) { 634 lpfc_printf_vlog(vport, KERN_ERR, LOG_TRACE_EVENT, 635 "6052 NVMEx REQ: EXIT. issue ls wqe failed " 636 "lsreq x%px Status %x DID %x\n", 637 pnvme_lsreq, ret, ndlp->nlp_DID); 638 lpfc_mbuf_free(vport->phba, bmp->virt, bmp->phys); 639 kfree(bmp); 640 return -EIO; 641 } 642 643 return 0; 644 } 645 646 /** 647 * lpfc_nvme_ls_req - Issue an NVME Link Service request 648 * @pnvme_lport: Transport localport that LS is to be issued from. 649 * @pnvme_rport: Transport remoteport that LS is to be sent to. 650 * @pnvme_lsreq: the transport nvme_ls_req structure for the LS 651 * 652 * Driver registers this routine to handle any link service request 653 * from the nvme_fc transport to a remote nvme-aware port. 654 * 655 * Return value : 656 * 0 - Success 657 * non-zero: various error codes, in form of -Exxx 658 **/ 659 static int 660 lpfc_nvme_ls_req(struct nvme_fc_local_port *pnvme_lport, 661 struct nvme_fc_remote_port *pnvme_rport, 662 struct nvmefc_ls_req *pnvme_lsreq) 663 { 664 struct lpfc_nvme_lport *lport; 665 struct lpfc_nvme_rport *rport; 666 struct lpfc_vport *vport; 667 int ret; 668 669 lport = (struct lpfc_nvme_lport *)pnvme_lport->private; 670 rport = (struct lpfc_nvme_rport *)pnvme_rport->private; 671 if (unlikely(!lport) || unlikely(!rport)) 672 return -EINVAL; 673 674 vport = lport->vport; 675 if (vport->load_flag & FC_UNLOADING || 676 vport->phba->hba_flag & HBA_IOQ_FLUSH) 677 return -ENODEV; 678 679 atomic_inc(&lport->fc4NvmeLsRequests); 680 681 ret = __lpfc_nvme_ls_req(vport, rport->ndlp, pnvme_lsreq, 682 lpfc_nvme_ls_req_cmp); 683 if (ret) 684 atomic_inc(&lport->xmt_ls_err); 685 686 return ret; 687 } 688 689 /** 690 * __lpfc_nvme_ls_abort - Generic service routine to abort a prior 691 * NVME LS request 692 * @vport: The local port that issued the LS 693 * @ndlp: The remote port the LS was sent to 694 * @pnvme_lsreq: Pointer to LS request structure from the transport 695 * 696 * The driver validates the ndlp, looks for the LS, and aborts the 697 * LS if found. 698 * 699 * Returns: 700 * 0 : if LS found and aborted 701 * non-zero: various error conditions in form -Exxx 702 **/ 703 int 704 __lpfc_nvme_ls_abort(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp, 705 struct nvmefc_ls_req *pnvme_lsreq) 706 { 707 struct lpfc_hba *phba = vport->phba; 708 struct lpfc_sli_ring *pring; 709 struct lpfc_iocbq *wqe, *next_wqe; 710 bool foundit = false; 711 712 if (!ndlp) { 713 lpfc_printf_vlog(vport, KERN_ERR, LOG_TRACE_EVENT, 714 "6049 NVMEx LS REQ Abort: Bad NDLP x%px DID " 715 "x%06x, Failing LS Req\n", 716 ndlp, ndlp ? ndlp->nlp_DID : 0); 717 return -EINVAL; 718 } 719 720 lpfc_printf_vlog(vport, KERN_INFO, LOG_NVME_DISC | LOG_NVME_ABTS, 721 "6040 NVMEx LS REQ Abort: Issue LS_ABORT for lsreq " 722 "x%px rqstlen:%d rsplen:%d %pad %pad\n", 723 pnvme_lsreq, pnvme_lsreq->rqstlen, 724 pnvme_lsreq->rsplen, &pnvme_lsreq->rqstdma, 725 &pnvme_lsreq->rspdma); 726 727 /* 728 * Lock the ELS ring txcmplq and look for the wqe that matches 729 * this ELS. If found, issue an abort on the wqe. 730 */ 731 pring = phba->sli4_hba.nvmels_wq->pring; 732 spin_lock_irq(&phba->hbalock); 733 spin_lock(&pring->ring_lock); 734 list_for_each_entry_safe(wqe, next_wqe, &pring->txcmplq, list) { 735 if (wqe->context_un.nvme_lsreq == pnvme_lsreq) { 736 wqe->cmd_flag |= LPFC_DRIVER_ABORTED; 737 foundit = true; 738 break; 739 } 740 } 741 spin_unlock(&pring->ring_lock); 742 743 if (foundit) 744 lpfc_sli_issue_abort_iotag(phba, pring, wqe, NULL); 745 spin_unlock_irq(&phba->hbalock); 746 747 if (foundit) 748 return 0; 749 750 lpfc_printf_vlog(vport, KERN_INFO, LOG_NVME_DISC | LOG_NVME_ABTS, 751 "6213 NVMEx LS REQ Abort: Unable to locate req x%px\n", 752 pnvme_lsreq); 753 return -EINVAL; 754 } 755 756 static int 757 lpfc_nvme_xmt_ls_rsp(struct nvme_fc_local_port *localport, 758 struct nvme_fc_remote_port *remoteport, 759 struct nvmefc_ls_rsp *ls_rsp) 760 { 761 struct lpfc_async_xchg_ctx *axchg = 762 container_of(ls_rsp, struct lpfc_async_xchg_ctx, ls_rsp); 763 struct lpfc_nvme_lport *lport; 764 int rc; 765 766 if (axchg->phba->pport->load_flag & FC_UNLOADING) 767 return -ENODEV; 768 769 lport = (struct lpfc_nvme_lport *)localport->private; 770 771 rc = __lpfc_nvme_xmt_ls_rsp(axchg, ls_rsp, __lpfc_nvme_xmt_ls_rsp_cmp); 772 773 if (rc) { 774 /* 775 * unless the failure is due to having already sent 776 * the response, an abort will be generated for the 777 * exchange if the rsp can't be sent. 778 */ 779 if (rc != -EALREADY) 780 atomic_inc(&lport->xmt_ls_abort); 781 return rc; 782 } 783 784 return 0; 785 } 786 787 /** 788 * lpfc_nvme_ls_abort - Abort a prior NVME LS request 789 * @pnvme_lport: Transport localport that LS is to be issued from. 790 * @pnvme_rport: Transport remoteport that LS is to be sent to. 791 * @pnvme_lsreq: the transport nvme_ls_req structure for the LS 792 * 793 * Driver registers this routine to abort a NVME LS request that is 794 * in progress (from the transports perspective). 795 **/ 796 static void 797 lpfc_nvme_ls_abort(struct nvme_fc_local_port *pnvme_lport, 798 struct nvme_fc_remote_port *pnvme_rport, 799 struct nvmefc_ls_req *pnvme_lsreq) 800 { 801 struct lpfc_nvme_lport *lport; 802 struct lpfc_vport *vport; 803 struct lpfc_nodelist *ndlp; 804 int ret; 805 806 lport = (struct lpfc_nvme_lport *)pnvme_lport->private; 807 if (unlikely(!lport)) 808 return; 809 vport = lport->vport; 810 811 if (vport->load_flag & FC_UNLOADING) 812 return; 813 814 ndlp = lpfc_findnode_did(vport, pnvme_rport->port_id); 815 816 ret = __lpfc_nvme_ls_abort(vport, ndlp, pnvme_lsreq); 817 if (!ret) 818 atomic_inc(&lport->xmt_ls_abort); 819 } 820 821 /* Fix up the existing sgls for NVME IO. */ 822 static inline void 823 lpfc_nvme_adj_fcp_sgls(struct lpfc_vport *vport, 824 struct lpfc_io_buf *lpfc_ncmd, 825 struct nvmefc_fcp_req *nCmd) 826 { 827 struct lpfc_hba *phba = vport->phba; 828 struct sli4_sge *sgl; 829 union lpfc_wqe128 *wqe; 830 uint32_t *wptr, *dptr; 831 832 /* 833 * Get a local pointer to the built-in wqe and correct 834 * the cmd size to match NVME's 96 bytes and fix 835 * the dma address. 836 */ 837 838 wqe = &lpfc_ncmd->cur_iocbq.wqe; 839 840 /* 841 * Adjust the FCP_CMD and FCP_RSP DMA data and sge_len to 842 * match NVME. NVME sends 96 bytes. Also, use the 843 * nvme commands command and response dma addresses 844 * rather than the virtual memory to ease the restore 845 * operation. 846 */ 847 sgl = lpfc_ncmd->dma_sgl; 848 sgl->sge_len = cpu_to_le32(nCmd->cmdlen); 849 if (phba->cfg_nvme_embed_cmd) { 850 sgl->addr_hi = 0; 851 sgl->addr_lo = 0; 852 853 /* Word 0-2 - NVME CMND IU (embedded payload) */ 854 wqe->generic.bde.tus.f.bdeFlags = BUFF_TYPE_BDE_IMMED; 855 wqe->generic.bde.tus.f.bdeSize = 56; 856 wqe->generic.bde.addrHigh = 0; 857 wqe->generic.bde.addrLow = 64; /* Word 16 */ 858 859 /* Word 10 - dbde is 0, wqes is 1 in template */ 860 861 /* 862 * Embed the payload in the last half of the WQE 863 * WQE words 16-30 get the NVME CMD IU payload 864 * 865 * WQE words 16-19 get payload Words 1-4 866 * WQE words 20-21 get payload Words 6-7 867 * WQE words 22-29 get payload Words 16-23 868 */ 869 wptr = &wqe->words[16]; /* WQE ptr */ 870 dptr = (uint32_t *)nCmd->cmdaddr; /* payload ptr */ 871 dptr++; /* Skip Word 0 in payload */ 872 873 *wptr++ = *dptr++; /* Word 1 */ 874 *wptr++ = *dptr++; /* Word 2 */ 875 *wptr++ = *dptr++; /* Word 3 */ 876 *wptr++ = *dptr++; /* Word 4 */ 877 dptr++; /* Skip Word 5 in payload */ 878 *wptr++ = *dptr++; /* Word 6 */ 879 *wptr++ = *dptr++; /* Word 7 */ 880 dptr += 8; /* Skip Words 8-15 in payload */ 881 *wptr++ = *dptr++; /* Word 16 */ 882 *wptr++ = *dptr++; /* Word 17 */ 883 *wptr++ = *dptr++; /* Word 18 */ 884 *wptr++ = *dptr++; /* Word 19 */ 885 *wptr++ = *dptr++; /* Word 20 */ 886 *wptr++ = *dptr++; /* Word 21 */ 887 *wptr++ = *dptr++; /* Word 22 */ 888 *wptr = *dptr; /* Word 23 */ 889 } else { 890 sgl->addr_hi = cpu_to_le32(putPaddrHigh(nCmd->cmddma)); 891 sgl->addr_lo = cpu_to_le32(putPaddrLow(nCmd->cmddma)); 892 893 /* Word 0-2 - NVME CMND IU Inline BDE */ 894 wqe->generic.bde.tus.f.bdeFlags = BUFF_TYPE_BDE_64; 895 wqe->generic.bde.tus.f.bdeSize = nCmd->cmdlen; 896 wqe->generic.bde.addrHigh = sgl->addr_hi; 897 wqe->generic.bde.addrLow = sgl->addr_lo; 898 899 /* Word 10 */ 900 bf_set(wqe_dbde, &wqe->generic.wqe_com, 1); 901 bf_set(wqe_wqes, &wqe->generic.wqe_com, 0); 902 } 903 904 sgl++; 905 906 /* Setup the physical region for the FCP RSP */ 907 sgl->addr_hi = cpu_to_le32(putPaddrHigh(nCmd->rspdma)); 908 sgl->addr_lo = cpu_to_le32(putPaddrLow(nCmd->rspdma)); 909 sgl->word2 = le32_to_cpu(sgl->word2); 910 if (nCmd->sg_cnt) 911 bf_set(lpfc_sli4_sge_last, sgl, 0); 912 else 913 bf_set(lpfc_sli4_sge_last, sgl, 1); 914 sgl->word2 = cpu_to_le32(sgl->word2); 915 sgl->sge_len = cpu_to_le32(nCmd->rsplen); 916 } 917 918 919 /* 920 * lpfc_nvme_io_cmd_cmpl - Complete an NVME-over-FCP IO 921 * 922 * Driver registers this routine as it io request handler. This 923 * routine issues an fcp WQE with data from the @lpfc_nvme_fcpreq 924 * data structure to the rport indicated in @lpfc_nvme_rport. 925 * 926 * Return value : 927 * 0 - Success 928 * TODO: What are the failure codes. 929 **/ 930 static void 931 lpfc_nvme_io_cmd_cmpl(struct lpfc_hba *phba, struct lpfc_iocbq *pwqeIn, 932 struct lpfc_iocbq *pwqeOut) 933 { 934 struct lpfc_io_buf *lpfc_ncmd = pwqeIn->io_buf; 935 struct lpfc_wcqe_complete *wcqe = &pwqeOut->wcqe_cmpl; 936 struct lpfc_vport *vport = pwqeIn->vport; 937 struct nvmefc_fcp_req *nCmd; 938 struct nvme_fc_ersp_iu *ep; 939 struct nvme_fc_cmd_iu *cp; 940 struct lpfc_nodelist *ndlp; 941 struct lpfc_nvme_fcpreq_priv *freqpriv; 942 struct lpfc_nvme_lport *lport; 943 uint32_t code, status, idx; 944 uint16_t cid, sqhd, data; 945 uint32_t *ptr; 946 uint32_t lat; 947 bool call_done = false; 948 #ifdef CONFIG_SCSI_LPFC_DEBUG_FS 949 int cpu; 950 #endif 951 int offline = 0; 952 953 /* Sanity check on return of outstanding command */ 954 if (!lpfc_ncmd) { 955 lpfc_printf_vlog(vport, KERN_ERR, LOG_TRACE_EVENT, 956 "6071 Null lpfc_ncmd pointer. No " 957 "release, skip completion\n"); 958 return; 959 } 960 961 /* Guard against abort handler being called at same time */ 962 spin_lock(&lpfc_ncmd->buf_lock); 963 964 if (!lpfc_ncmd->nvmeCmd) { 965 spin_unlock(&lpfc_ncmd->buf_lock); 966 lpfc_printf_vlog(vport, KERN_ERR, LOG_TRACE_EVENT, 967 "6066 Missing cmpl ptrs: lpfc_ncmd x%px, " 968 "nvmeCmd x%px\n", 969 lpfc_ncmd, lpfc_ncmd->nvmeCmd); 970 971 /* Release the lpfc_ncmd regardless of the missing elements. */ 972 lpfc_release_nvme_buf(phba, lpfc_ncmd); 973 return; 974 } 975 nCmd = lpfc_ncmd->nvmeCmd; 976 status = bf_get(lpfc_wcqe_c_status, wcqe); 977 978 idx = lpfc_ncmd->cur_iocbq.hba_wqidx; 979 phba->sli4_hba.hdwq[idx].nvme_cstat.io_cmpls++; 980 981 if (unlikely(status && vport->localport)) { 982 lport = (struct lpfc_nvme_lport *)vport->localport->private; 983 if (lport) { 984 if (bf_get(lpfc_wcqe_c_xb, wcqe)) 985 atomic_inc(&lport->cmpl_fcp_xb); 986 atomic_inc(&lport->cmpl_fcp_err); 987 } 988 } 989 990 lpfc_nvmeio_data(phba, "NVME FCP CMPL: xri x%x stat x%x parm x%x\n", 991 lpfc_ncmd->cur_iocbq.sli4_xritag, 992 status, wcqe->parameter); 993 /* 994 * Catch race where our node has transitioned, but the 995 * transport is still transitioning. 996 */ 997 ndlp = lpfc_ncmd->ndlp; 998 if (!ndlp) { 999 lpfc_printf_vlog(vport, KERN_ERR, LOG_TRACE_EVENT, 1000 "6062 Ignoring NVME cmpl. No ndlp\n"); 1001 goto out_err; 1002 } 1003 1004 code = bf_get(lpfc_wcqe_c_code, wcqe); 1005 if (code == CQE_CODE_NVME_ERSP) { 1006 /* For this type of CQE, we need to rebuild the rsp */ 1007 ep = (struct nvme_fc_ersp_iu *)nCmd->rspaddr; 1008 1009 /* 1010 * Get Command Id from cmd to plug into response. This 1011 * code is not needed in the next NVME Transport drop. 1012 */ 1013 cp = (struct nvme_fc_cmd_iu *)nCmd->cmdaddr; 1014 cid = cp->sqe.common.command_id; 1015 1016 /* 1017 * RSN is in CQE word 2 1018 * SQHD is in CQE Word 3 bits 15:0 1019 * Cmd Specific info is in CQE Word 1 1020 * and in CQE Word 0 bits 15:0 1021 */ 1022 sqhd = bf_get(lpfc_wcqe_c_sqhead, wcqe); 1023 1024 /* Now lets build the NVME ERSP IU */ 1025 ep->iu_len = cpu_to_be16(8); 1026 ep->rsn = wcqe->parameter; 1027 ep->xfrd_len = cpu_to_be32(nCmd->payload_length); 1028 ep->rsvd12 = 0; 1029 ptr = (uint32_t *)&ep->cqe.result.u64; 1030 *ptr++ = wcqe->total_data_placed; 1031 data = bf_get(lpfc_wcqe_c_ersp0, wcqe); 1032 *ptr = (uint32_t)data; 1033 ep->cqe.sq_head = sqhd; 1034 ep->cqe.sq_id = nCmd->sqid; 1035 ep->cqe.command_id = cid; 1036 ep->cqe.status = 0; 1037 1038 lpfc_ncmd->status = IOSTAT_SUCCESS; 1039 lpfc_ncmd->result = 0; 1040 nCmd->rcv_rsplen = LPFC_NVME_ERSP_LEN; 1041 nCmd->transferred_length = nCmd->payload_length; 1042 } else { 1043 lpfc_ncmd->status = (status & LPFC_IOCB_STATUS_MASK); 1044 lpfc_ncmd->result = (wcqe->parameter & IOERR_PARAM_MASK); 1045 1046 /* For NVME, the only failure path that results in an 1047 * IO error is when the adapter rejects it. All other 1048 * conditions are a success case and resolved by the 1049 * transport. 1050 * IOSTAT_FCP_RSP_ERROR means: 1051 * 1. Length of data received doesn't match total 1052 * transfer length in WQE 1053 * 2. If the RSP payload does NOT match these cases: 1054 * a. RSP length 12/24 bytes and all zeros 1055 * b. NVME ERSP 1056 */ 1057 switch (lpfc_ncmd->status) { 1058 case IOSTAT_SUCCESS: 1059 nCmd->transferred_length = wcqe->total_data_placed; 1060 nCmd->rcv_rsplen = 0; 1061 nCmd->status = 0; 1062 break; 1063 case IOSTAT_FCP_RSP_ERROR: 1064 nCmd->transferred_length = wcqe->total_data_placed; 1065 nCmd->rcv_rsplen = wcqe->parameter; 1066 nCmd->status = 0; 1067 1068 /* Check if this is really an ERSP */ 1069 if (nCmd->rcv_rsplen == LPFC_NVME_ERSP_LEN) { 1070 lpfc_ncmd->status = IOSTAT_SUCCESS; 1071 lpfc_ncmd->result = 0; 1072 1073 lpfc_printf_vlog(vport, KERN_INFO, LOG_NVME, 1074 "6084 NVME Completion ERSP: " 1075 "xri %x placed x%x\n", 1076 lpfc_ncmd->cur_iocbq.sli4_xritag, 1077 wcqe->total_data_placed); 1078 break; 1079 } 1080 lpfc_printf_vlog(vport, KERN_ERR, LOG_TRACE_EVENT, 1081 "6081 NVME Completion Protocol Error: " 1082 "xri %x status x%x result x%x " 1083 "placed x%x\n", 1084 lpfc_ncmd->cur_iocbq.sli4_xritag, 1085 lpfc_ncmd->status, lpfc_ncmd->result, 1086 wcqe->total_data_placed); 1087 break; 1088 case IOSTAT_LOCAL_REJECT: 1089 /* Let fall through to set command final state. */ 1090 if (lpfc_ncmd->result == IOERR_ABORT_REQUESTED) 1091 lpfc_printf_vlog(vport, KERN_INFO, 1092 LOG_NVME_IOERR, 1093 "6032 Delay Aborted cmd x%px " 1094 "nvme cmd x%px, xri x%x, " 1095 "xb %d\n", 1096 lpfc_ncmd, nCmd, 1097 lpfc_ncmd->cur_iocbq.sli4_xritag, 1098 bf_get(lpfc_wcqe_c_xb, wcqe)); 1099 fallthrough; 1100 default: 1101 out_err: 1102 lpfc_printf_vlog(vport, KERN_INFO, LOG_NVME_IOERR, 1103 "6072 NVME Completion Error: xri %x " 1104 "status x%x result x%x [x%x] " 1105 "placed x%x\n", 1106 lpfc_ncmd->cur_iocbq.sli4_xritag, 1107 lpfc_ncmd->status, lpfc_ncmd->result, 1108 wcqe->parameter, 1109 wcqe->total_data_placed); 1110 nCmd->transferred_length = 0; 1111 nCmd->rcv_rsplen = 0; 1112 nCmd->status = NVME_SC_INTERNAL; 1113 offline = pci_channel_offline(vport->phba->pcidev); 1114 } 1115 } 1116 1117 /* pick up SLI4 exhange busy condition */ 1118 if (bf_get(lpfc_wcqe_c_xb, wcqe) && !offline) 1119 lpfc_ncmd->flags |= LPFC_SBUF_XBUSY; 1120 else 1121 lpfc_ncmd->flags &= ~LPFC_SBUF_XBUSY; 1122 1123 /* Update stats and complete the IO. There is 1124 * no need for dma unprep because the nvme_transport 1125 * owns the dma address. 1126 */ 1127 #ifdef CONFIG_SCSI_LPFC_DEBUG_FS 1128 if (lpfc_ncmd->ts_cmd_start) { 1129 lpfc_ncmd->ts_isr_cmpl = pwqeIn->isr_timestamp; 1130 lpfc_ncmd->ts_data_io = ktime_get_ns(); 1131 phba->ktime_last_cmd = lpfc_ncmd->ts_data_io; 1132 lpfc_io_ktime(phba, lpfc_ncmd); 1133 } 1134 if (unlikely(phba->hdwqstat_on & LPFC_CHECK_NVME_IO)) { 1135 cpu = raw_smp_processor_id(); 1136 this_cpu_inc(phba->sli4_hba.c_stat->cmpl_io); 1137 if (lpfc_ncmd->cpu != cpu) 1138 lpfc_printf_vlog(vport, 1139 KERN_INFO, LOG_NVME_IOERR, 1140 "6701 CPU Check cmpl: " 1141 "cpu %d expect %d\n", 1142 cpu, lpfc_ncmd->cpu); 1143 } 1144 #endif 1145 1146 /* NVME targets need completion held off until the abort exchange 1147 * completes unless the NVME Rport is getting unregistered. 1148 */ 1149 1150 if (!(lpfc_ncmd->flags & LPFC_SBUF_XBUSY)) { 1151 freqpriv = nCmd->private; 1152 freqpriv->nvme_buf = NULL; 1153 lpfc_ncmd->nvmeCmd = NULL; 1154 call_done = true; 1155 } 1156 spin_unlock(&lpfc_ncmd->buf_lock); 1157 1158 /* Check if IO qualified for CMF */ 1159 if (phba->cmf_active_mode != LPFC_CFG_OFF && 1160 nCmd->io_dir == NVMEFC_FCP_READ && 1161 nCmd->payload_length) { 1162 /* Used when calculating average latency */ 1163 lat = ktime_get_ns() - lpfc_ncmd->rx_cmd_start; 1164 lpfc_update_cmf_cmpl(phba, lat, nCmd->payload_length, NULL); 1165 } 1166 1167 if (call_done) 1168 nCmd->done(nCmd); 1169 1170 /* Call release with XB=1 to queue the IO into the abort list. */ 1171 lpfc_release_nvme_buf(phba, lpfc_ncmd); 1172 } 1173 1174 1175 /** 1176 * lpfc_nvme_prep_io_cmd - Issue an NVME-over-FCP IO 1177 * @vport: pointer to a host virtual N_Port data structure 1178 * @lpfc_ncmd: Pointer to lpfc scsi command 1179 * @pnode: pointer to a node-list data structure 1180 * @cstat: pointer to the control status structure 1181 * 1182 * Driver registers this routine as it io request handler. This 1183 * routine issues an fcp WQE with data from the @lpfc_nvme_fcpreq 1184 * data structure to the rport indicated in @lpfc_nvme_rport. 1185 * 1186 * Return value : 1187 * 0 - Success 1188 * TODO: What are the failure codes. 1189 **/ 1190 static int 1191 lpfc_nvme_prep_io_cmd(struct lpfc_vport *vport, 1192 struct lpfc_io_buf *lpfc_ncmd, 1193 struct lpfc_nodelist *pnode, 1194 struct lpfc_fc4_ctrl_stat *cstat) 1195 { 1196 struct lpfc_hba *phba = vport->phba; 1197 struct nvmefc_fcp_req *nCmd = lpfc_ncmd->nvmeCmd; 1198 struct lpfc_iocbq *pwqeq = &(lpfc_ncmd->cur_iocbq); 1199 union lpfc_wqe128 *wqe = &pwqeq->wqe; 1200 uint32_t req_len; 1201 1202 /* 1203 * There are three possibilities here - use scatter-gather segment, use 1204 * the single mapping, or neither. 1205 */ 1206 if (nCmd->sg_cnt) { 1207 if (nCmd->io_dir == NVMEFC_FCP_WRITE) { 1208 /* From the iwrite template, initialize words 7 - 11 */ 1209 memcpy(&wqe->words[7], 1210 &lpfc_iwrite_cmd_template.words[7], 1211 sizeof(uint32_t) * 5); 1212 1213 /* Word 4 */ 1214 wqe->fcp_iwrite.total_xfer_len = nCmd->payload_length; 1215 1216 /* Word 5 */ 1217 if ((phba->cfg_nvme_enable_fb) && 1218 (pnode->nlp_flag & NLP_FIRSTBURST)) { 1219 req_len = lpfc_ncmd->nvmeCmd->payload_length; 1220 if (req_len < pnode->nvme_fb_size) 1221 wqe->fcp_iwrite.initial_xfer_len = 1222 req_len; 1223 else 1224 wqe->fcp_iwrite.initial_xfer_len = 1225 pnode->nvme_fb_size; 1226 } else { 1227 wqe->fcp_iwrite.initial_xfer_len = 0; 1228 } 1229 cstat->output_requests++; 1230 } else { 1231 /* From the iread template, initialize words 7 - 11 */ 1232 memcpy(&wqe->words[7], 1233 &lpfc_iread_cmd_template.words[7], 1234 sizeof(uint32_t) * 5); 1235 1236 /* Word 4 */ 1237 wqe->fcp_iread.total_xfer_len = nCmd->payload_length; 1238 1239 /* Word 5 */ 1240 wqe->fcp_iread.rsrvd5 = 0; 1241 1242 /* For a CMF Managed port, iod must be zero'ed */ 1243 if (phba->cmf_active_mode == LPFC_CFG_MANAGED) 1244 bf_set(wqe_iod, &wqe->fcp_iread.wqe_com, 1245 LPFC_WQE_IOD_NONE); 1246 cstat->input_requests++; 1247 } 1248 } else { 1249 /* From the icmnd template, initialize words 4 - 11 */ 1250 memcpy(&wqe->words[4], &lpfc_icmnd_cmd_template.words[4], 1251 sizeof(uint32_t) * 8); 1252 cstat->control_requests++; 1253 } 1254 1255 if (pnode->nlp_nvme_info & NLP_NVME_NSLER) 1256 bf_set(wqe_erp, &wqe->generic.wqe_com, 1); 1257 /* 1258 * Finish initializing those WQE fields that are independent 1259 * of the nvme_cmnd request_buffer 1260 */ 1261 1262 /* Word 3 */ 1263 bf_set(payload_offset_len, &wqe->fcp_icmd, 1264 (nCmd->rsplen + nCmd->cmdlen)); 1265 1266 /* Word 6 */ 1267 bf_set(wqe_ctxt_tag, &wqe->generic.wqe_com, 1268 phba->sli4_hba.rpi_ids[pnode->nlp_rpi]); 1269 bf_set(wqe_xri_tag, &wqe->generic.wqe_com, pwqeq->sli4_xritag); 1270 1271 /* Word 8 */ 1272 wqe->generic.wqe_com.abort_tag = pwqeq->iotag; 1273 1274 /* Word 9 */ 1275 bf_set(wqe_reqtag, &wqe->generic.wqe_com, pwqeq->iotag); 1276 1277 /* Word 10 */ 1278 bf_set(wqe_xchg, &wqe->fcp_iwrite.wqe_com, LPFC_NVME_XCHG); 1279 1280 /* Words 13 14 15 are for PBDE support */ 1281 1282 /* add the VMID tags as per switch response */ 1283 if (unlikely(lpfc_ncmd->cur_iocbq.cmd_flag & LPFC_IO_VMID)) { 1284 if (phba->pport->vmid_priority_tagging) { 1285 bf_set(wqe_ccpe, &wqe->fcp_iwrite.wqe_com, 1); 1286 bf_set(wqe_ccp, &wqe->fcp_iwrite.wqe_com, 1287 lpfc_ncmd->cur_iocbq.vmid_tag.cs_ctl_vmid); 1288 } else { 1289 bf_set(wqe_appid, &wqe->fcp_iwrite.wqe_com, 1); 1290 bf_set(wqe_wqes, &wqe->fcp_iwrite.wqe_com, 1); 1291 wqe->words[31] = lpfc_ncmd->cur_iocbq.vmid_tag.app_id; 1292 } 1293 } 1294 1295 pwqeq->vport = vport; 1296 return 0; 1297 } 1298 1299 1300 /** 1301 * lpfc_nvme_prep_io_dma - Issue an NVME-over-FCP IO 1302 * @vport: pointer to a host virtual N_Port data structure 1303 * @lpfc_ncmd: Pointer to lpfc scsi command 1304 * 1305 * Driver registers this routine as it io request handler. This 1306 * routine issues an fcp WQE with data from the @lpfc_nvme_fcpreq 1307 * data structure to the rport indicated in @lpfc_nvme_rport. 1308 * 1309 * Return value : 1310 * 0 - Success 1311 * TODO: What are the failure codes. 1312 **/ 1313 static int 1314 lpfc_nvme_prep_io_dma(struct lpfc_vport *vport, 1315 struct lpfc_io_buf *lpfc_ncmd) 1316 { 1317 struct lpfc_hba *phba = vport->phba; 1318 struct nvmefc_fcp_req *nCmd = lpfc_ncmd->nvmeCmd; 1319 union lpfc_wqe128 *wqe = &lpfc_ncmd->cur_iocbq.wqe; 1320 struct sli4_sge *sgl = lpfc_ncmd->dma_sgl; 1321 struct sli4_hybrid_sgl *sgl_xtra = NULL; 1322 struct scatterlist *data_sg; 1323 struct sli4_sge *first_data_sgl; 1324 struct ulp_bde64 *bde; 1325 dma_addr_t physaddr = 0; 1326 uint32_t dma_len = 0; 1327 uint32_t dma_offset = 0; 1328 int nseg, i, j; 1329 bool lsp_just_set = false; 1330 1331 /* Fix up the command and response DMA stuff. */ 1332 lpfc_nvme_adj_fcp_sgls(vport, lpfc_ncmd, nCmd); 1333 1334 /* 1335 * There are three possibilities here - use scatter-gather segment, use 1336 * the single mapping, or neither. 1337 */ 1338 if (nCmd->sg_cnt) { 1339 /* 1340 * Jump over the cmd and rsp SGEs. The fix routine 1341 * has already adjusted for this. 1342 */ 1343 sgl += 2; 1344 1345 first_data_sgl = sgl; 1346 lpfc_ncmd->seg_cnt = nCmd->sg_cnt; 1347 if (lpfc_ncmd->seg_cnt > lpfc_nvme_template.max_sgl_segments) { 1348 lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT, 1349 "6058 Too many sg segments from " 1350 "NVME Transport. Max %d, " 1351 "nvmeIO sg_cnt %d\n", 1352 phba->cfg_nvme_seg_cnt + 1, 1353 lpfc_ncmd->seg_cnt); 1354 lpfc_ncmd->seg_cnt = 0; 1355 return 1; 1356 } 1357 1358 /* 1359 * The driver established a maximum scatter-gather segment count 1360 * during probe that limits the number of sg elements in any 1361 * single nvme command. Just run through the seg_cnt and format 1362 * the sge's. 1363 */ 1364 nseg = nCmd->sg_cnt; 1365 data_sg = nCmd->first_sgl; 1366 1367 /* for tracking the segment boundaries */ 1368 j = 2; 1369 for (i = 0; i < nseg; i++) { 1370 if (data_sg == NULL) { 1371 lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT, 1372 "6059 dptr err %d, nseg %d\n", 1373 i, nseg); 1374 lpfc_ncmd->seg_cnt = 0; 1375 return 1; 1376 } 1377 1378 sgl->word2 = 0; 1379 if (nseg == 1) { 1380 bf_set(lpfc_sli4_sge_last, sgl, 1); 1381 bf_set(lpfc_sli4_sge_type, sgl, 1382 LPFC_SGE_TYPE_DATA); 1383 } else { 1384 bf_set(lpfc_sli4_sge_last, sgl, 0); 1385 1386 /* expand the segment */ 1387 if (!lsp_just_set && 1388 !((j + 1) % phba->border_sge_num) && 1389 ((nseg - 1) != i)) { 1390 /* set LSP type */ 1391 bf_set(lpfc_sli4_sge_type, sgl, 1392 LPFC_SGE_TYPE_LSP); 1393 1394 sgl_xtra = lpfc_get_sgl_per_hdwq( 1395 phba, lpfc_ncmd); 1396 1397 if (unlikely(!sgl_xtra)) { 1398 lpfc_ncmd->seg_cnt = 0; 1399 return 1; 1400 } 1401 sgl->addr_lo = cpu_to_le32(putPaddrLow( 1402 sgl_xtra->dma_phys_sgl)); 1403 sgl->addr_hi = cpu_to_le32(putPaddrHigh( 1404 sgl_xtra->dma_phys_sgl)); 1405 1406 } else { 1407 bf_set(lpfc_sli4_sge_type, sgl, 1408 LPFC_SGE_TYPE_DATA); 1409 } 1410 } 1411 1412 if (!(bf_get(lpfc_sli4_sge_type, sgl) & 1413 LPFC_SGE_TYPE_LSP)) { 1414 if ((nseg - 1) == i) 1415 bf_set(lpfc_sli4_sge_last, sgl, 1); 1416 1417 physaddr = sg_dma_address(data_sg); 1418 dma_len = sg_dma_len(data_sg); 1419 sgl->addr_lo = cpu_to_le32( 1420 putPaddrLow(physaddr)); 1421 sgl->addr_hi = cpu_to_le32( 1422 putPaddrHigh(physaddr)); 1423 1424 bf_set(lpfc_sli4_sge_offset, sgl, dma_offset); 1425 sgl->word2 = cpu_to_le32(sgl->word2); 1426 sgl->sge_len = cpu_to_le32(dma_len); 1427 1428 dma_offset += dma_len; 1429 data_sg = sg_next(data_sg); 1430 1431 sgl++; 1432 1433 lsp_just_set = false; 1434 } else { 1435 sgl->word2 = cpu_to_le32(sgl->word2); 1436 1437 sgl->sge_len = cpu_to_le32( 1438 phba->cfg_sg_dma_buf_size); 1439 1440 sgl = (struct sli4_sge *)sgl_xtra->dma_sgl; 1441 i = i - 1; 1442 1443 lsp_just_set = true; 1444 } 1445 1446 j++; 1447 } 1448 1449 /* PBDE support for first data SGE only */ 1450 if (nseg == 1 && phba->cfg_enable_pbde) { 1451 /* Words 13-15 */ 1452 bde = (struct ulp_bde64 *) 1453 &wqe->words[13]; 1454 bde->addrLow = first_data_sgl->addr_lo; 1455 bde->addrHigh = first_data_sgl->addr_hi; 1456 bde->tus.f.bdeSize = 1457 le32_to_cpu(first_data_sgl->sge_len); 1458 bde->tus.f.bdeFlags = BUFF_TYPE_BDE_64; 1459 bde->tus.w = cpu_to_le32(bde->tus.w); 1460 1461 /* Word 11 - set PBDE bit */ 1462 bf_set(wqe_pbde, &wqe->generic.wqe_com, 1); 1463 } else { 1464 memset(&wqe->words[13], 0, (sizeof(uint32_t) * 3)); 1465 /* Word 11 - PBDE bit disabled by default template */ 1466 } 1467 1468 } else { 1469 lpfc_ncmd->seg_cnt = 0; 1470 1471 /* For this clause to be valid, the payload_length 1472 * and sg_cnt must zero. 1473 */ 1474 if (nCmd->payload_length != 0) { 1475 lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT, 1476 "6063 NVME DMA Prep Err: sg_cnt %d " 1477 "payload_length x%x\n", 1478 nCmd->sg_cnt, nCmd->payload_length); 1479 return 1; 1480 } 1481 } 1482 return 0; 1483 } 1484 1485 /** 1486 * lpfc_nvme_fcp_io_submit - Issue an NVME-over-FCP IO 1487 * @pnvme_lport: Pointer to the driver's local port data 1488 * @pnvme_rport: Pointer to the rport getting the @lpfc_nvme_ereq 1489 * @hw_queue_handle: Driver-returned handle in lpfc_nvme_create_queue 1490 * @pnvme_fcreq: IO request from nvme fc to driver. 1491 * 1492 * Driver registers this routine as it io request handler. This 1493 * routine issues an fcp WQE with data from the @lpfc_nvme_fcpreq 1494 * data structure to the rport indicated in @lpfc_nvme_rport. 1495 * 1496 * Return value : 1497 * 0 - Success 1498 * TODO: What are the failure codes. 1499 **/ 1500 static int 1501 lpfc_nvme_fcp_io_submit(struct nvme_fc_local_port *pnvme_lport, 1502 struct nvme_fc_remote_port *pnvme_rport, 1503 void *hw_queue_handle, 1504 struct nvmefc_fcp_req *pnvme_fcreq) 1505 { 1506 int ret = 0; 1507 int expedite = 0; 1508 int idx, cpu; 1509 struct lpfc_nvme_lport *lport; 1510 struct lpfc_fc4_ctrl_stat *cstat; 1511 struct lpfc_vport *vport; 1512 struct lpfc_hba *phba; 1513 struct lpfc_nodelist *ndlp; 1514 struct lpfc_io_buf *lpfc_ncmd; 1515 struct lpfc_nvme_rport *rport; 1516 struct lpfc_nvme_qhandle *lpfc_queue_info; 1517 struct lpfc_nvme_fcpreq_priv *freqpriv; 1518 struct nvme_common_command *sqe; 1519 uint64_t start = 0; 1520 #if (IS_ENABLED(CONFIG_NVME_FC)) 1521 u8 *uuid = NULL; 1522 int err; 1523 enum dma_data_direction iodir; 1524 #endif 1525 1526 /* Validate pointers. LLDD fault handling with transport does 1527 * have timing races. 1528 */ 1529 lport = (struct lpfc_nvme_lport *)pnvme_lport->private; 1530 if (unlikely(!lport)) { 1531 ret = -EINVAL; 1532 goto out_fail; 1533 } 1534 1535 vport = lport->vport; 1536 1537 if (unlikely(!hw_queue_handle)) { 1538 lpfc_printf_vlog(vport, KERN_INFO, LOG_NVME_IOERR, 1539 "6117 Fail IO, NULL hw_queue_handle\n"); 1540 atomic_inc(&lport->xmt_fcp_err); 1541 ret = -EBUSY; 1542 goto out_fail; 1543 } 1544 1545 phba = vport->phba; 1546 1547 if ((unlikely(vport->load_flag & FC_UNLOADING)) || 1548 phba->hba_flag & HBA_IOQ_FLUSH) { 1549 lpfc_printf_vlog(vport, KERN_INFO, LOG_NVME_IOERR, 1550 "6124 Fail IO, Driver unload\n"); 1551 atomic_inc(&lport->xmt_fcp_err); 1552 ret = -ENODEV; 1553 goto out_fail; 1554 } 1555 1556 freqpriv = pnvme_fcreq->private; 1557 if (unlikely(!freqpriv)) { 1558 lpfc_printf_vlog(vport, KERN_INFO, LOG_NVME_IOERR, 1559 "6158 Fail IO, NULL request data\n"); 1560 atomic_inc(&lport->xmt_fcp_err); 1561 ret = -EINVAL; 1562 goto out_fail; 1563 } 1564 1565 #ifdef CONFIG_SCSI_LPFC_DEBUG_FS 1566 if (phba->ktime_on) 1567 start = ktime_get_ns(); 1568 #endif 1569 rport = (struct lpfc_nvme_rport *)pnvme_rport->private; 1570 lpfc_queue_info = (struct lpfc_nvme_qhandle *)hw_queue_handle; 1571 1572 /* 1573 * Catch race where our node has transitioned, but the 1574 * transport is still transitioning. 1575 */ 1576 ndlp = rport->ndlp; 1577 if (!ndlp) { 1578 lpfc_printf_vlog(vport, KERN_INFO, LOG_NODE | LOG_NVME_IOERR, 1579 "6053 Busy IO, ndlp not ready: rport x%px " 1580 "ndlp x%px, DID x%06x\n", 1581 rport, ndlp, pnvme_rport->port_id); 1582 atomic_inc(&lport->xmt_fcp_err); 1583 ret = -EBUSY; 1584 goto out_fail; 1585 } 1586 1587 /* The remote node has to be a mapped target or it's an error. */ 1588 if ((ndlp->nlp_type & NLP_NVME_TARGET) && 1589 (ndlp->nlp_state != NLP_STE_MAPPED_NODE)) { 1590 lpfc_printf_vlog(vport, KERN_INFO, LOG_NODE | LOG_NVME_IOERR, 1591 "6036 Fail IO, DID x%06x not ready for " 1592 "IO. State x%x, Type x%x Flg x%x\n", 1593 pnvme_rport->port_id, 1594 ndlp->nlp_state, ndlp->nlp_type, 1595 ndlp->fc4_xpt_flags); 1596 atomic_inc(&lport->xmt_fcp_bad_ndlp); 1597 ret = -EBUSY; 1598 goto out_fail; 1599 1600 } 1601 1602 /* Currently only NVME Keep alive commands should be expedited 1603 * if the driver runs out of a resource. These should only be 1604 * issued on the admin queue, qidx 0 1605 */ 1606 if (!lpfc_queue_info->qidx && !pnvme_fcreq->sg_cnt) { 1607 sqe = &((struct nvme_fc_cmd_iu *) 1608 pnvme_fcreq->cmdaddr)->sqe.common; 1609 if (sqe->opcode == nvme_admin_keep_alive) 1610 expedite = 1; 1611 } 1612 1613 /* Check if IO qualifies for CMF */ 1614 if (phba->cmf_active_mode != LPFC_CFG_OFF && 1615 pnvme_fcreq->io_dir == NVMEFC_FCP_READ && 1616 pnvme_fcreq->payload_length) { 1617 ret = lpfc_update_cmf_cmd(phba, pnvme_fcreq->payload_length); 1618 if (ret) { 1619 ret = -EBUSY; 1620 goto out_fail; 1621 } 1622 /* Get start time for IO latency */ 1623 start = ktime_get_ns(); 1624 } 1625 1626 /* The node is shared with FCP IO, make sure the IO pending count does 1627 * not exceed the programmed depth. 1628 */ 1629 if (lpfc_ndlp_check_qdepth(phba, ndlp)) { 1630 if ((atomic_read(&ndlp->cmd_pending) >= ndlp->cmd_qdepth) && 1631 !expedite) { 1632 lpfc_printf_vlog(vport, KERN_INFO, LOG_NVME_IOERR, 1633 "6174 Fail IO, ndlp qdepth exceeded: " 1634 "idx %d DID %x pend %d qdepth %d\n", 1635 lpfc_queue_info->index, ndlp->nlp_DID, 1636 atomic_read(&ndlp->cmd_pending), 1637 ndlp->cmd_qdepth); 1638 atomic_inc(&lport->xmt_fcp_qdepth); 1639 ret = -EBUSY; 1640 goto out_fail1; 1641 } 1642 } 1643 1644 /* Lookup Hardware Queue index based on fcp_io_sched module parameter */ 1645 if (phba->cfg_fcp_io_sched == LPFC_FCP_SCHED_BY_HDWQ) { 1646 idx = lpfc_queue_info->index; 1647 } else { 1648 cpu = raw_smp_processor_id(); 1649 idx = phba->sli4_hba.cpu_map[cpu].hdwq; 1650 } 1651 1652 lpfc_ncmd = lpfc_get_nvme_buf(phba, ndlp, idx, expedite); 1653 if (lpfc_ncmd == NULL) { 1654 atomic_inc(&lport->xmt_fcp_noxri); 1655 lpfc_printf_vlog(vport, KERN_INFO, LOG_NVME_IOERR, 1656 "6065 Fail IO, driver buffer pool is empty: " 1657 "idx %d DID %x\n", 1658 lpfc_queue_info->index, ndlp->nlp_DID); 1659 ret = -EBUSY; 1660 goto out_fail1; 1661 } 1662 #ifdef CONFIG_SCSI_LPFC_DEBUG_FS 1663 if (start) { 1664 lpfc_ncmd->ts_cmd_start = start; 1665 lpfc_ncmd->ts_last_cmd = phba->ktime_last_cmd; 1666 } else { 1667 lpfc_ncmd->ts_cmd_start = 0; 1668 } 1669 #endif 1670 lpfc_ncmd->rx_cmd_start = start; 1671 1672 /* 1673 * Store the data needed by the driver to issue, abort, and complete 1674 * an IO. 1675 * Do not let the IO hang out forever. There is no midlayer issuing 1676 * an abort so inform the FW of the maximum IO pending time. 1677 */ 1678 freqpriv->nvme_buf = lpfc_ncmd; 1679 lpfc_ncmd->nvmeCmd = pnvme_fcreq; 1680 lpfc_ncmd->ndlp = ndlp; 1681 lpfc_ncmd->qidx = lpfc_queue_info->qidx; 1682 1683 #if (IS_ENABLED(CONFIG_NVME_FC)) 1684 /* check the necessary and sufficient condition to support VMID */ 1685 if (lpfc_is_vmid_enabled(phba) && 1686 (ndlp->vmid_support || 1687 phba->pport->vmid_priority_tagging == 1688 LPFC_VMID_PRIO_TAG_ALL_TARGETS)) { 1689 /* is the I/O generated by a VM, get the associated virtual */ 1690 /* entity id */ 1691 uuid = nvme_fc_io_getuuid(pnvme_fcreq); 1692 1693 if (uuid) { 1694 if (pnvme_fcreq->io_dir == NVMEFC_FCP_WRITE) 1695 iodir = DMA_TO_DEVICE; 1696 else if (pnvme_fcreq->io_dir == NVMEFC_FCP_READ) 1697 iodir = DMA_FROM_DEVICE; 1698 else 1699 iodir = DMA_NONE; 1700 1701 err = lpfc_vmid_get_appid(vport, uuid, iodir, 1702 (union lpfc_vmid_io_tag *) 1703 &lpfc_ncmd->cur_iocbq.vmid_tag); 1704 if (!err) 1705 lpfc_ncmd->cur_iocbq.cmd_flag |= LPFC_IO_VMID; 1706 } 1707 } 1708 #endif 1709 1710 /* 1711 * Issue the IO on the WQ indicated by index in the hw_queue_handle. 1712 * This identfier was create in our hardware queue create callback 1713 * routine. The driver now is dependent on the IO queue steering from 1714 * the transport. We are trusting the upper NVME layers know which 1715 * index to use and that they have affinitized a CPU to this hardware 1716 * queue. A hardware queue maps to a driver MSI-X vector/EQ/CQ/WQ. 1717 */ 1718 lpfc_ncmd->cur_iocbq.hba_wqidx = idx; 1719 cstat = &phba->sli4_hba.hdwq[idx].nvme_cstat; 1720 1721 lpfc_nvme_prep_io_cmd(vport, lpfc_ncmd, ndlp, cstat); 1722 ret = lpfc_nvme_prep_io_dma(vport, lpfc_ncmd); 1723 if (ret) { 1724 lpfc_printf_vlog(vport, KERN_INFO, LOG_NVME_IOERR, 1725 "6175 Fail IO, Prep DMA: " 1726 "idx %d DID %x\n", 1727 lpfc_queue_info->index, ndlp->nlp_DID); 1728 atomic_inc(&lport->xmt_fcp_err); 1729 ret = -ENOMEM; 1730 goto out_free_nvme_buf; 1731 } 1732 1733 lpfc_nvmeio_data(phba, "NVME FCP XMIT: xri x%x idx %d to %06x\n", 1734 lpfc_ncmd->cur_iocbq.sli4_xritag, 1735 lpfc_queue_info->index, ndlp->nlp_DID); 1736 1737 ret = lpfc_sli4_issue_wqe(phba, lpfc_ncmd->hdwq, &lpfc_ncmd->cur_iocbq); 1738 if (ret) { 1739 atomic_inc(&lport->xmt_fcp_wqerr); 1740 lpfc_printf_vlog(vport, KERN_INFO, LOG_NVME_IOERR, 1741 "6113 Fail IO, Could not issue WQE err %x " 1742 "sid: x%x did: x%x oxid: x%x\n", 1743 ret, vport->fc_myDID, ndlp->nlp_DID, 1744 lpfc_ncmd->cur_iocbq.sli4_xritag); 1745 goto out_free_nvme_buf; 1746 } 1747 1748 if (phba->cfg_xri_rebalancing) 1749 lpfc_keep_pvt_pool_above_lowwm(phba, lpfc_ncmd->hdwq_no); 1750 1751 #ifdef CONFIG_SCSI_LPFC_DEBUG_FS 1752 if (lpfc_ncmd->ts_cmd_start) 1753 lpfc_ncmd->ts_cmd_wqput = ktime_get_ns(); 1754 1755 if (phba->hdwqstat_on & LPFC_CHECK_NVME_IO) { 1756 cpu = raw_smp_processor_id(); 1757 this_cpu_inc(phba->sli4_hba.c_stat->xmt_io); 1758 lpfc_ncmd->cpu = cpu; 1759 if (idx != cpu) 1760 lpfc_printf_vlog(vport, 1761 KERN_INFO, LOG_NVME_IOERR, 1762 "6702 CPU Check cmd: " 1763 "cpu %d wq %d\n", 1764 lpfc_ncmd->cpu, 1765 lpfc_queue_info->index); 1766 } 1767 #endif 1768 return 0; 1769 1770 out_free_nvme_buf: 1771 if (lpfc_ncmd->nvmeCmd->sg_cnt) { 1772 if (lpfc_ncmd->nvmeCmd->io_dir == NVMEFC_FCP_WRITE) 1773 cstat->output_requests--; 1774 else 1775 cstat->input_requests--; 1776 } else 1777 cstat->control_requests--; 1778 lpfc_release_nvme_buf(phba, lpfc_ncmd); 1779 out_fail1: 1780 lpfc_update_cmf_cmpl(phba, LPFC_CGN_NOT_SENT, 1781 pnvme_fcreq->payload_length, NULL); 1782 out_fail: 1783 return ret; 1784 } 1785 1786 /** 1787 * lpfc_nvme_abort_fcreq_cmpl - Complete an NVME FCP abort request. 1788 * @phba: Pointer to HBA context object 1789 * @cmdiocb: Pointer to command iocb object. 1790 * @abts_cmpl: Pointer to wcqe complete object. 1791 * 1792 * This is the callback function for any NVME FCP IO that was aborted. 1793 * 1794 * Return value: 1795 * None 1796 **/ 1797 void 1798 lpfc_nvme_abort_fcreq_cmpl(struct lpfc_hba *phba, struct lpfc_iocbq *cmdiocb, 1799 struct lpfc_wcqe_complete *abts_cmpl) 1800 { 1801 lpfc_printf_log(phba, KERN_INFO, LOG_NVME, 1802 "6145 ABORT_XRI_CN completing on rpi x%x " 1803 "original iotag x%x, abort cmd iotag x%x " 1804 "req_tag x%x, status x%x, hwstatus x%x\n", 1805 bf_get(wqe_ctxt_tag, &cmdiocb->wqe.generic.wqe_com), 1806 get_job_abtsiotag(phba, cmdiocb), cmdiocb->iotag, 1807 bf_get(lpfc_wcqe_c_request_tag, abts_cmpl), 1808 bf_get(lpfc_wcqe_c_status, abts_cmpl), 1809 bf_get(lpfc_wcqe_c_hw_status, abts_cmpl)); 1810 lpfc_sli_release_iocbq(phba, cmdiocb); 1811 } 1812 1813 /** 1814 * lpfc_nvme_fcp_abort - Issue an NVME-over-FCP ABTS 1815 * @pnvme_lport: Pointer to the driver's local port data 1816 * @pnvme_rport: Pointer to the rport getting the @lpfc_nvme_ereq 1817 * @hw_queue_handle: Driver-returned handle in lpfc_nvme_create_queue 1818 * @pnvme_fcreq: IO request from nvme fc to driver. 1819 * 1820 * Driver registers this routine as its nvme request io abort handler. This 1821 * routine issues an fcp Abort WQE with data from the @lpfc_nvme_fcpreq 1822 * data structure to the rport indicated in @lpfc_nvme_rport. This routine 1823 * is executed asynchronously - one the target is validated as "MAPPED" and 1824 * ready for IO, the driver issues the abort request and returns. 1825 * 1826 * Return value: 1827 * None 1828 **/ 1829 static void 1830 lpfc_nvme_fcp_abort(struct nvme_fc_local_port *pnvme_lport, 1831 struct nvme_fc_remote_port *pnvme_rport, 1832 void *hw_queue_handle, 1833 struct nvmefc_fcp_req *pnvme_fcreq) 1834 { 1835 struct lpfc_nvme_lport *lport; 1836 struct lpfc_vport *vport; 1837 struct lpfc_hba *phba; 1838 struct lpfc_io_buf *lpfc_nbuf; 1839 struct lpfc_iocbq *nvmereq_wqe; 1840 struct lpfc_nvme_fcpreq_priv *freqpriv; 1841 unsigned long flags; 1842 int ret_val; 1843 1844 /* Validate pointers. LLDD fault handling with transport does 1845 * have timing races. 1846 */ 1847 lport = (struct lpfc_nvme_lport *)pnvme_lport->private; 1848 if (unlikely(!lport)) 1849 return; 1850 1851 vport = lport->vport; 1852 1853 if (unlikely(!hw_queue_handle)) { 1854 lpfc_printf_vlog(vport, KERN_INFO, LOG_NVME_ABTS, 1855 "6129 Fail Abort, HW Queue Handle NULL.\n"); 1856 return; 1857 } 1858 1859 phba = vport->phba; 1860 freqpriv = pnvme_fcreq->private; 1861 1862 if (unlikely(!freqpriv)) 1863 return; 1864 if (vport->load_flag & FC_UNLOADING) 1865 return; 1866 1867 /* Announce entry to new IO submit field. */ 1868 lpfc_printf_vlog(vport, KERN_INFO, LOG_NVME_ABTS, 1869 "6002 Abort Request to rport DID x%06x " 1870 "for nvme_fc_req x%px\n", 1871 pnvme_rport->port_id, 1872 pnvme_fcreq); 1873 1874 /* If the hba is getting reset, this flag is set. It is 1875 * cleared when the reset is complete and rings reestablished. 1876 */ 1877 spin_lock_irqsave(&phba->hbalock, flags); 1878 /* driver queued commands are in process of being flushed */ 1879 if (phba->hba_flag & HBA_IOQ_FLUSH) { 1880 spin_unlock_irqrestore(&phba->hbalock, flags); 1881 lpfc_printf_vlog(vport, KERN_ERR, LOG_TRACE_EVENT, 1882 "6139 Driver in reset cleanup - flushing " 1883 "NVME Req now. hba_flag x%x\n", 1884 phba->hba_flag); 1885 return; 1886 } 1887 1888 lpfc_nbuf = freqpriv->nvme_buf; 1889 if (!lpfc_nbuf) { 1890 spin_unlock_irqrestore(&phba->hbalock, flags); 1891 lpfc_printf_vlog(vport, KERN_ERR, LOG_TRACE_EVENT, 1892 "6140 NVME IO req has no matching lpfc nvme " 1893 "io buffer. Skipping abort req.\n"); 1894 return; 1895 } else if (!lpfc_nbuf->nvmeCmd) { 1896 spin_unlock_irqrestore(&phba->hbalock, flags); 1897 lpfc_printf_vlog(vport, KERN_ERR, LOG_TRACE_EVENT, 1898 "6141 lpfc NVME IO req has no nvme_fcreq " 1899 "io buffer. Skipping abort req.\n"); 1900 return; 1901 } 1902 nvmereq_wqe = &lpfc_nbuf->cur_iocbq; 1903 1904 /* Guard against IO completion being called at same time */ 1905 spin_lock(&lpfc_nbuf->buf_lock); 1906 1907 /* 1908 * The lpfc_nbuf and the mapped nvme_fcreq in the driver's 1909 * state must match the nvme_fcreq passed by the nvme 1910 * transport. If they don't match, it is likely the driver 1911 * has already completed the NVME IO and the nvme transport 1912 * has not seen it yet. 1913 */ 1914 if (lpfc_nbuf->nvmeCmd != pnvme_fcreq) { 1915 lpfc_printf_vlog(vport, KERN_ERR, LOG_TRACE_EVENT, 1916 "6143 NVME req mismatch: " 1917 "lpfc_nbuf x%px nvmeCmd x%px, " 1918 "pnvme_fcreq x%px. Skipping Abort xri x%x\n", 1919 lpfc_nbuf, lpfc_nbuf->nvmeCmd, 1920 pnvme_fcreq, nvmereq_wqe->sli4_xritag); 1921 goto out_unlock; 1922 } 1923 1924 /* Don't abort IOs no longer on the pending queue. */ 1925 if (!(nvmereq_wqe->cmd_flag & LPFC_IO_ON_TXCMPLQ)) { 1926 lpfc_printf_vlog(vport, KERN_ERR, LOG_TRACE_EVENT, 1927 "6142 NVME IO req x%px not queued - skipping " 1928 "abort req xri x%x\n", 1929 pnvme_fcreq, nvmereq_wqe->sli4_xritag); 1930 goto out_unlock; 1931 } 1932 1933 atomic_inc(&lport->xmt_fcp_abort); 1934 lpfc_nvmeio_data(phba, "NVME FCP ABORT: xri x%x idx %d to %06x\n", 1935 nvmereq_wqe->sli4_xritag, 1936 nvmereq_wqe->hba_wqidx, pnvme_rport->port_id); 1937 1938 /* Outstanding abort is in progress */ 1939 if (nvmereq_wqe->cmd_flag & LPFC_DRIVER_ABORTED) { 1940 lpfc_printf_vlog(vport, KERN_ERR, LOG_TRACE_EVENT, 1941 "6144 Outstanding NVME I/O Abort Request " 1942 "still pending on nvme_fcreq x%px, " 1943 "lpfc_ncmd x%px xri x%x\n", 1944 pnvme_fcreq, lpfc_nbuf, 1945 nvmereq_wqe->sli4_xritag); 1946 goto out_unlock; 1947 } 1948 1949 ret_val = lpfc_sli4_issue_abort_iotag(phba, nvmereq_wqe, 1950 lpfc_nvme_abort_fcreq_cmpl); 1951 1952 spin_unlock(&lpfc_nbuf->buf_lock); 1953 spin_unlock_irqrestore(&phba->hbalock, flags); 1954 1955 /* Make sure HBA is alive */ 1956 lpfc_issue_hb_tmo(phba); 1957 1958 if (ret_val != WQE_SUCCESS) { 1959 lpfc_printf_vlog(vport, KERN_ERR, LOG_TRACE_EVENT, 1960 "6137 Failed abts issue_wqe with status x%x " 1961 "for nvme_fcreq x%px.\n", 1962 ret_val, pnvme_fcreq); 1963 return; 1964 } 1965 1966 lpfc_printf_vlog(vport, KERN_INFO, LOG_NVME_ABTS, 1967 "6138 Transport Abort NVME Request Issued for " 1968 "ox_id x%x\n", 1969 nvmereq_wqe->sli4_xritag); 1970 return; 1971 1972 out_unlock: 1973 spin_unlock(&lpfc_nbuf->buf_lock); 1974 spin_unlock_irqrestore(&phba->hbalock, flags); 1975 return; 1976 } 1977 1978 /* Declare and initialization an instance of the FC NVME template. */ 1979 static struct nvme_fc_port_template lpfc_nvme_template = { 1980 /* initiator-based functions */ 1981 .localport_delete = lpfc_nvme_localport_delete, 1982 .remoteport_delete = lpfc_nvme_remoteport_delete, 1983 .create_queue = lpfc_nvme_create_queue, 1984 .delete_queue = lpfc_nvme_delete_queue, 1985 .ls_req = lpfc_nvme_ls_req, 1986 .fcp_io = lpfc_nvme_fcp_io_submit, 1987 .ls_abort = lpfc_nvme_ls_abort, 1988 .fcp_abort = lpfc_nvme_fcp_abort, 1989 .xmt_ls_rsp = lpfc_nvme_xmt_ls_rsp, 1990 1991 .max_hw_queues = 1, 1992 .max_sgl_segments = LPFC_NVME_DEFAULT_SEGS, 1993 .max_dif_sgl_segments = LPFC_NVME_DEFAULT_SEGS, 1994 .dma_boundary = 0xFFFFFFFF, 1995 1996 /* Sizes of additional private data for data structures. 1997 * No use for the last two sizes at this time. 1998 */ 1999 .local_priv_sz = sizeof(struct lpfc_nvme_lport), 2000 .remote_priv_sz = sizeof(struct lpfc_nvme_rport), 2001 .lsrqst_priv_sz = 0, 2002 .fcprqst_priv_sz = sizeof(struct lpfc_nvme_fcpreq_priv), 2003 }; 2004 2005 /* 2006 * lpfc_get_nvme_buf - Get a nvme buffer from io_buf_list of the HBA 2007 * 2008 * This routine removes a nvme buffer from head of @hdwq io_buf_list 2009 * and returns to caller. 2010 * 2011 * Return codes: 2012 * NULL - Error 2013 * Pointer to lpfc_nvme_buf - Success 2014 **/ 2015 static struct lpfc_io_buf * 2016 lpfc_get_nvme_buf(struct lpfc_hba *phba, struct lpfc_nodelist *ndlp, 2017 int idx, int expedite) 2018 { 2019 struct lpfc_io_buf *lpfc_ncmd; 2020 struct lpfc_sli4_hdw_queue *qp; 2021 struct sli4_sge *sgl; 2022 struct lpfc_iocbq *pwqeq; 2023 union lpfc_wqe128 *wqe; 2024 2025 lpfc_ncmd = lpfc_get_io_buf(phba, NULL, idx, expedite); 2026 2027 if (lpfc_ncmd) { 2028 pwqeq = &(lpfc_ncmd->cur_iocbq); 2029 wqe = &pwqeq->wqe; 2030 2031 /* Setup key fields in buffer that may have been changed 2032 * if other protocols used this buffer. 2033 */ 2034 pwqeq->cmd_flag = LPFC_IO_NVME; 2035 pwqeq->cmd_cmpl = lpfc_nvme_io_cmd_cmpl; 2036 lpfc_ncmd->start_time = jiffies; 2037 lpfc_ncmd->flags = 0; 2038 2039 /* Rsp SGE will be filled in when we rcv an IO 2040 * from the NVME Layer to be sent. 2041 * The cmd is going to be embedded so we need a SKIP SGE. 2042 */ 2043 sgl = lpfc_ncmd->dma_sgl; 2044 bf_set(lpfc_sli4_sge_type, sgl, LPFC_SGE_TYPE_SKIP); 2045 bf_set(lpfc_sli4_sge_last, sgl, 0); 2046 sgl->word2 = cpu_to_le32(sgl->word2); 2047 /* Fill in word 3 / sgl_len during cmd submission */ 2048 2049 /* Initialize 64 bytes only */ 2050 memset(wqe, 0, sizeof(union lpfc_wqe)); 2051 2052 if (lpfc_ndlp_check_qdepth(phba, ndlp)) { 2053 atomic_inc(&ndlp->cmd_pending); 2054 lpfc_ncmd->flags |= LPFC_SBUF_BUMP_QDEPTH; 2055 } 2056 2057 } else { 2058 qp = &phba->sli4_hba.hdwq[idx]; 2059 qp->empty_io_bufs++; 2060 } 2061 2062 return lpfc_ncmd; 2063 } 2064 2065 /** 2066 * lpfc_release_nvme_buf: Return a nvme buffer back to hba nvme buf list. 2067 * @phba: The Hba for which this call is being executed. 2068 * @lpfc_ncmd: The nvme buffer which is being released. 2069 * 2070 * This routine releases @lpfc_ncmd nvme buffer by adding it to tail of @phba 2071 * lpfc_io_buf_list list. For SLI4 XRI's are tied to the nvme buffer 2072 * and cannot be reused for at least RA_TOV amount of time if it was 2073 * aborted. 2074 **/ 2075 static void 2076 lpfc_release_nvme_buf(struct lpfc_hba *phba, struct lpfc_io_buf *lpfc_ncmd) 2077 { 2078 struct lpfc_sli4_hdw_queue *qp; 2079 unsigned long iflag = 0; 2080 2081 if ((lpfc_ncmd->flags & LPFC_SBUF_BUMP_QDEPTH) && lpfc_ncmd->ndlp) 2082 atomic_dec(&lpfc_ncmd->ndlp->cmd_pending); 2083 2084 lpfc_ncmd->ndlp = NULL; 2085 lpfc_ncmd->flags &= ~LPFC_SBUF_BUMP_QDEPTH; 2086 2087 qp = lpfc_ncmd->hdwq; 2088 if (unlikely(lpfc_ncmd->flags & LPFC_SBUF_XBUSY)) { 2089 lpfc_printf_log(phba, KERN_INFO, LOG_NVME_ABTS, 2090 "6310 XB release deferred for " 2091 "ox_id x%x on reqtag x%x\n", 2092 lpfc_ncmd->cur_iocbq.sli4_xritag, 2093 lpfc_ncmd->cur_iocbq.iotag); 2094 2095 spin_lock_irqsave(&qp->abts_io_buf_list_lock, iflag); 2096 list_add_tail(&lpfc_ncmd->list, 2097 &qp->lpfc_abts_io_buf_list); 2098 qp->abts_nvme_io_bufs++; 2099 spin_unlock_irqrestore(&qp->abts_io_buf_list_lock, iflag); 2100 } else 2101 lpfc_release_io_buf(phba, (struct lpfc_io_buf *)lpfc_ncmd, qp); 2102 } 2103 2104 /** 2105 * lpfc_nvme_create_localport - Create/Bind an nvme localport instance. 2106 * @vport: the lpfc_vport instance requesting a localport. 2107 * 2108 * This routine is invoked to create an nvme localport instance to bind 2109 * to the nvme_fc_transport. It is called once during driver load 2110 * like lpfc_create_shost after all other services are initialized. 2111 * It requires a vport, vpi, and wwns at call time. Other localport 2112 * parameters are modified as the driver's FCID and the Fabric WWN 2113 * are established. 2114 * 2115 * Return codes 2116 * 0 - successful 2117 * -ENOMEM - no heap memory available 2118 * other values - from nvme registration upcall 2119 **/ 2120 int 2121 lpfc_nvme_create_localport(struct lpfc_vport *vport) 2122 { 2123 int ret = 0; 2124 struct lpfc_hba *phba = vport->phba; 2125 struct nvme_fc_port_info nfcp_info; 2126 struct nvme_fc_local_port *localport; 2127 struct lpfc_nvme_lport *lport; 2128 2129 /* Initialize this localport instance. The vport wwn usage ensures 2130 * that NPIV is accounted for. 2131 */ 2132 memset(&nfcp_info, 0, sizeof(struct nvme_fc_port_info)); 2133 nfcp_info.port_role = FC_PORT_ROLE_NVME_INITIATOR; 2134 nfcp_info.node_name = wwn_to_u64(vport->fc_nodename.u.wwn); 2135 nfcp_info.port_name = wwn_to_u64(vport->fc_portname.u.wwn); 2136 2137 /* We need to tell the transport layer + 1 because it takes page 2138 * alignment into account. When space for the SGL is allocated we 2139 * allocate + 3, one for cmd, one for rsp and one for this alignment 2140 */ 2141 lpfc_nvme_template.max_sgl_segments = phba->cfg_nvme_seg_cnt + 1; 2142 2143 /* Advertise how many hw queues we support based on cfg_hdw_queue, 2144 * which will not exceed cpu count. 2145 */ 2146 lpfc_nvme_template.max_hw_queues = phba->cfg_hdw_queue; 2147 2148 if (!IS_ENABLED(CONFIG_NVME_FC)) 2149 return ret; 2150 2151 /* localport is allocated from the stack, but the registration 2152 * call allocates heap memory as well as the private area. 2153 */ 2154 2155 ret = nvme_fc_register_localport(&nfcp_info, &lpfc_nvme_template, 2156 &vport->phba->pcidev->dev, &localport); 2157 if (!ret) { 2158 lpfc_printf_vlog(vport, KERN_INFO, LOG_NVME | LOG_NVME_DISC, 2159 "6005 Successfully registered local " 2160 "NVME port num %d, localP x%px, private " 2161 "x%px, sg_seg %d\n", 2162 localport->port_num, localport, 2163 localport->private, 2164 lpfc_nvme_template.max_sgl_segments); 2165 2166 /* Private is our lport size declared in the template. */ 2167 lport = (struct lpfc_nvme_lport *)localport->private; 2168 vport->localport = localport; 2169 lport->vport = vport; 2170 vport->nvmei_support = 1; 2171 2172 atomic_set(&lport->xmt_fcp_noxri, 0); 2173 atomic_set(&lport->xmt_fcp_bad_ndlp, 0); 2174 atomic_set(&lport->xmt_fcp_qdepth, 0); 2175 atomic_set(&lport->xmt_fcp_err, 0); 2176 atomic_set(&lport->xmt_fcp_wqerr, 0); 2177 atomic_set(&lport->xmt_fcp_abort, 0); 2178 atomic_set(&lport->xmt_ls_abort, 0); 2179 atomic_set(&lport->xmt_ls_err, 0); 2180 atomic_set(&lport->cmpl_fcp_xb, 0); 2181 atomic_set(&lport->cmpl_fcp_err, 0); 2182 atomic_set(&lport->cmpl_ls_xb, 0); 2183 atomic_set(&lport->cmpl_ls_err, 0); 2184 2185 atomic_set(&lport->fc4NvmeLsRequests, 0); 2186 atomic_set(&lport->fc4NvmeLsCmpls, 0); 2187 } 2188 2189 return ret; 2190 } 2191 2192 #if (IS_ENABLED(CONFIG_NVME_FC)) 2193 /* lpfc_nvme_lport_unreg_wait - Wait for the host to complete an lport unreg. 2194 * 2195 * The driver has to wait for the host nvme transport to callback 2196 * indicating the localport has successfully unregistered all 2197 * resources. Since this is an uninterruptible wait, loop every ten 2198 * seconds and print a message indicating no progress. 2199 * 2200 * An uninterruptible wait is used because of the risk of transport-to- 2201 * driver state mismatch. 2202 */ 2203 static void 2204 lpfc_nvme_lport_unreg_wait(struct lpfc_vport *vport, 2205 struct lpfc_nvme_lport *lport, 2206 struct completion *lport_unreg_cmp) 2207 { 2208 u32 wait_tmo; 2209 int ret, i, pending = 0; 2210 struct lpfc_sli_ring *pring; 2211 struct lpfc_hba *phba = vport->phba; 2212 struct lpfc_sli4_hdw_queue *qp; 2213 int abts_scsi, abts_nvme; 2214 2215 /* Host transport has to clean up and confirm requiring an indefinite 2216 * wait. Print a message if a 10 second wait expires and renew the 2217 * wait. This is unexpected. 2218 */ 2219 wait_tmo = msecs_to_jiffies(LPFC_NVME_WAIT_TMO * 1000); 2220 while (true) { 2221 ret = wait_for_completion_timeout(lport_unreg_cmp, wait_tmo); 2222 if (unlikely(!ret)) { 2223 pending = 0; 2224 abts_scsi = 0; 2225 abts_nvme = 0; 2226 for (i = 0; i < phba->cfg_hdw_queue; i++) { 2227 qp = &phba->sli4_hba.hdwq[i]; 2228 if (!vport->localport || !qp || !qp->io_wq) 2229 return; 2230 2231 pring = qp->io_wq->pring; 2232 if (!pring) 2233 continue; 2234 pending += pring->txcmplq_cnt; 2235 abts_scsi += qp->abts_scsi_io_bufs; 2236 abts_nvme += qp->abts_nvme_io_bufs; 2237 } 2238 if (!vport->localport || 2239 test_bit(HBA_PCI_ERR, &vport->phba->bit_flags) || 2240 vport->load_flag & FC_UNLOADING) 2241 return; 2242 2243 lpfc_printf_vlog(vport, KERN_ERR, LOG_TRACE_EVENT, 2244 "6176 Lport x%px Localport x%px wait " 2245 "timed out. Pending %d [%d:%d]. " 2246 "Renewing.\n", 2247 lport, vport->localport, pending, 2248 abts_scsi, abts_nvme); 2249 continue; 2250 } 2251 break; 2252 } 2253 lpfc_printf_vlog(vport, KERN_INFO, LOG_NVME_IOERR, 2254 "6177 Lport x%px Localport x%px Complete Success\n", 2255 lport, vport->localport); 2256 } 2257 #endif 2258 2259 /** 2260 * lpfc_nvme_destroy_localport - Destroy lpfc_nvme bound to nvme transport. 2261 * @vport: pointer to a host virtual N_Port data structure 2262 * 2263 * This routine is invoked to destroy all lports bound to the phba. 2264 * The lport memory was allocated by the nvme fc transport and is 2265 * released there. This routine ensures all rports bound to the 2266 * lport have been disconnected. 2267 * 2268 **/ 2269 void 2270 lpfc_nvme_destroy_localport(struct lpfc_vport *vport) 2271 { 2272 #if (IS_ENABLED(CONFIG_NVME_FC)) 2273 struct nvme_fc_local_port *localport; 2274 struct lpfc_nvme_lport *lport; 2275 int ret; 2276 DECLARE_COMPLETION_ONSTACK(lport_unreg_cmp); 2277 2278 if (vport->nvmei_support == 0) 2279 return; 2280 2281 localport = vport->localport; 2282 if (!localport) 2283 return; 2284 lport = (struct lpfc_nvme_lport *)localport->private; 2285 2286 lpfc_printf_vlog(vport, KERN_INFO, LOG_NVME, 2287 "6011 Destroying NVME localport x%px\n", 2288 localport); 2289 2290 /* lport's rport list is clear. Unregister 2291 * lport and release resources. 2292 */ 2293 lport->lport_unreg_cmp = &lport_unreg_cmp; 2294 ret = nvme_fc_unregister_localport(localport); 2295 2296 /* Wait for completion. This either blocks 2297 * indefinitely or succeeds 2298 */ 2299 lpfc_nvme_lport_unreg_wait(vport, lport, &lport_unreg_cmp); 2300 vport->localport = NULL; 2301 2302 /* Regardless of the unregister upcall response, clear 2303 * nvmei_support. All rports are unregistered and the 2304 * driver will clean up. 2305 */ 2306 vport->nvmei_support = 0; 2307 if (ret == 0) { 2308 lpfc_printf_vlog(vport, 2309 KERN_INFO, LOG_NVME_DISC, 2310 "6009 Unregistered lport Success\n"); 2311 } else { 2312 lpfc_printf_vlog(vport, 2313 KERN_INFO, LOG_NVME_DISC, 2314 "6010 Unregistered lport " 2315 "Failed, status x%x\n", 2316 ret); 2317 } 2318 #endif 2319 } 2320 2321 void 2322 lpfc_nvme_update_localport(struct lpfc_vport *vport) 2323 { 2324 #if (IS_ENABLED(CONFIG_NVME_FC)) 2325 struct nvme_fc_local_port *localport; 2326 struct lpfc_nvme_lport *lport; 2327 2328 localport = vport->localport; 2329 if (!localport) { 2330 lpfc_printf_vlog(vport, KERN_WARNING, LOG_NVME, 2331 "6710 Update NVME fail. No localport\n"); 2332 return; 2333 } 2334 lport = (struct lpfc_nvme_lport *)localport->private; 2335 if (!lport) { 2336 lpfc_printf_vlog(vport, KERN_WARNING, LOG_NVME, 2337 "6171 Update NVME fail. localP x%px, No lport\n", 2338 localport); 2339 return; 2340 } 2341 lpfc_printf_vlog(vport, KERN_INFO, LOG_NVME, 2342 "6012 Update NVME lport x%px did x%x\n", 2343 localport, vport->fc_myDID); 2344 2345 localport->port_id = vport->fc_myDID; 2346 if (localport->port_id == 0) 2347 localport->port_role = FC_PORT_ROLE_NVME_DISCOVERY; 2348 else 2349 localport->port_role = FC_PORT_ROLE_NVME_INITIATOR; 2350 2351 lpfc_printf_vlog(vport, KERN_INFO, LOG_NVME_DISC, 2352 "6030 bound lport x%px to DID x%06x\n", 2353 lport, localport->port_id); 2354 #endif 2355 } 2356 2357 int 2358 lpfc_nvme_register_port(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp) 2359 { 2360 #if (IS_ENABLED(CONFIG_NVME_FC)) 2361 int ret = 0; 2362 struct nvme_fc_local_port *localport; 2363 struct lpfc_nvme_lport *lport; 2364 struct lpfc_nvme_rport *rport; 2365 struct lpfc_nvme_rport *oldrport; 2366 struct nvme_fc_remote_port *remote_port; 2367 struct nvme_fc_port_info rpinfo; 2368 struct lpfc_nodelist *prev_ndlp = NULL; 2369 struct fc_rport *srport = ndlp->rport; 2370 2371 lpfc_printf_vlog(ndlp->vport, KERN_INFO, LOG_NVME_DISC, 2372 "6006 Register NVME PORT. DID x%06x nlptype x%x\n", 2373 ndlp->nlp_DID, ndlp->nlp_type); 2374 2375 localport = vport->localport; 2376 if (!localport) 2377 return 0; 2378 2379 lport = (struct lpfc_nvme_lport *)localport->private; 2380 2381 /* NVME rports are not preserved across devloss. 2382 * Just register this instance. Note, rpinfo->dev_loss_tmo 2383 * is left 0 to indicate accept transport defaults. The 2384 * driver communicates port role capabilities consistent 2385 * with the PRLI response data. 2386 */ 2387 memset(&rpinfo, 0, sizeof(struct nvme_fc_port_info)); 2388 rpinfo.port_id = ndlp->nlp_DID; 2389 if (ndlp->nlp_type & NLP_NVME_TARGET) 2390 rpinfo.port_role |= FC_PORT_ROLE_NVME_TARGET; 2391 if (ndlp->nlp_type & NLP_NVME_INITIATOR) 2392 rpinfo.port_role |= FC_PORT_ROLE_NVME_INITIATOR; 2393 2394 if (ndlp->nlp_type & NLP_NVME_DISCOVERY) 2395 rpinfo.port_role |= FC_PORT_ROLE_NVME_DISCOVERY; 2396 2397 rpinfo.port_name = wwn_to_u64(ndlp->nlp_portname.u.wwn); 2398 rpinfo.node_name = wwn_to_u64(ndlp->nlp_nodename.u.wwn); 2399 if (srport) 2400 rpinfo.dev_loss_tmo = srport->dev_loss_tmo; 2401 else 2402 rpinfo.dev_loss_tmo = vport->cfg_devloss_tmo; 2403 2404 spin_lock_irq(&ndlp->lock); 2405 2406 /* If an oldrport exists, so does the ndlp reference. If not 2407 * a new reference is needed because either the node has never 2408 * been registered or it's been unregistered and getting deleted. 2409 */ 2410 oldrport = lpfc_ndlp_get_nrport(ndlp); 2411 if (oldrport) { 2412 prev_ndlp = oldrport->ndlp; 2413 spin_unlock_irq(&ndlp->lock); 2414 } else { 2415 spin_unlock_irq(&ndlp->lock); 2416 if (!lpfc_nlp_get(ndlp)) { 2417 dev_warn(&vport->phba->pcidev->dev, 2418 "Warning - No node ref - exit register\n"); 2419 return 0; 2420 } 2421 } 2422 2423 ret = nvme_fc_register_remoteport(localport, &rpinfo, &remote_port); 2424 if (!ret) { 2425 /* If the ndlp already has an nrport, this is just 2426 * a resume of the existing rport. Else this is a 2427 * new rport. 2428 */ 2429 /* Guard against an unregister/reregister 2430 * race that leaves the WAIT flag set. 2431 */ 2432 spin_lock_irq(&ndlp->lock); 2433 ndlp->fc4_xpt_flags &= ~NVME_XPT_UNREG_WAIT; 2434 ndlp->fc4_xpt_flags |= NVME_XPT_REGD; 2435 spin_unlock_irq(&ndlp->lock); 2436 rport = remote_port->private; 2437 if (oldrport) { 2438 2439 /* Sever the ndlp<->rport association 2440 * before dropping the ndlp ref from 2441 * register. 2442 */ 2443 spin_lock_irq(&ndlp->lock); 2444 ndlp->nrport = NULL; 2445 ndlp->fc4_xpt_flags &= ~NVME_XPT_UNREG_WAIT; 2446 spin_unlock_irq(&ndlp->lock); 2447 rport->ndlp = NULL; 2448 rport->remoteport = NULL; 2449 2450 /* Reference only removed if previous NDLP is no longer 2451 * active. It might be just a swap and removing the 2452 * reference would cause a premature cleanup. 2453 */ 2454 if (prev_ndlp && prev_ndlp != ndlp) { 2455 if (!prev_ndlp->nrport) 2456 lpfc_nlp_put(prev_ndlp); 2457 } 2458 } 2459 2460 /* Clean bind the rport to the ndlp. */ 2461 rport->remoteport = remote_port; 2462 rport->lport = lport; 2463 rport->ndlp = ndlp; 2464 spin_lock_irq(&ndlp->lock); 2465 ndlp->nrport = rport; 2466 spin_unlock_irq(&ndlp->lock); 2467 lpfc_printf_vlog(vport, KERN_INFO, 2468 LOG_NVME_DISC | LOG_NODE, 2469 "6022 Bind lport x%px to remoteport x%px " 2470 "rport x%px WWNN 0x%llx, " 2471 "Rport WWPN 0x%llx DID " 2472 "x%06x Role x%x, ndlp %p prev_ndlp x%px\n", 2473 lport, remote_port, rport, 2474 rpinfo.node_name, rpinfo.port_name, 2475 rpinfo.port_id, rpinfo.port_role, 2476 ndlp, prev_ndlp); 2477 } else { 2478 lpfc_printf_vlog(vport, KERN_ERR, 2479 LOG_TRACE_EVENT, 2480 "6031 RemotePort Registration failed " 2481 "err: %d, DID x%06x\n", 2482 ret, ndlp->nlp_DID); 2483 } 2484 2485 return ret; 2486 #else 2487 return 0; 2488 #endif 2489 } 2490 2491 /* 2492 * lpfc_nvme_rescan_port - Check to see if we should rescan this remoteport 2493 * 2494 * If the ndlp represents an NVME Target, that we are logged into, 2495 * ping the NVME FC Transport layer to initiate a device rescan 2496 * on this remote NPort. 2497 */ 2498 void 2499 lpfc_nvme_rescan_port(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp) 2500 { 2501 #if (IS_ENABLED(CONFIG_NVME_FC)) 2502 struct lpfc_nvme_rport *nrport; 2503 struct nvme_fc_remote_port *remoteport = NULL; 2504 2505 spin_lock_irq(&ndlp->lock); 2506 nrport = lpfc_ndlp_get_nrport(ndlp); 2507 if (nrport) 2508 remoteport = nrport->remoteport; 2509 spin_unlock_irq(&ndlp->lock); 2510 2511 lpfc_printf_vlog(vport, KERN_INFO, LOG_NVME_DISC, 2512 "6170 Rescan NPort DID x%06x type x%x " 2513 "state x%x nrport x%px remoteport x%px\n", 2514 ndlp->nlp_DID, ndlp->nlp_type, ndlp->nlp_state, 2515 nrport, remoteport); 2516 2517 if (!nrport || !remoteport) 2518 goto rescan_exit; 2519 2520 /* Rescan an NVME target in MAPPED state with DISCOVERY role set */ 2521 if (remoteport->port_role & FC_PORT_ROLE_NVME_DISCOVERY && 2522 ndlp->nlp_state == NLP_STE_MAPPED_NODE) { 2523 nvme_fc_rescan_remoteport(remoteport); 2524 2525 lpfc_printf_vlog(vport, KERN_INFO, LOG_NVME_DISC, 2526 "6172 NVME rescanned DID x%06x " 2527 "port_state x%x\n", 2528 ndlp->nlp_DID, remoteport->port_state); 2529 } 2530 return; 2531 rescan_exit: 2532 lpfc_printf_vlog(vport, KERN_INFO, LOG_NVME_DISC, 2533 "6169 Skip NVME Rport Rescan, NVME remoteport " 2534 "unregistered\n"); 2535 #endif 2536 } 2537 2538 /* lpfc_nvme_unregister_port - unbind the DID and port_role from this rport. 2539 * 2540 * There is no notion of Devloss or rport recovery from the current 2541 * nvme_transport perspective. Loss of an rport just means IO cannot 2542 * be sent and recovery is completely up to the initator. 2543 * For now, the driver just unbinds the DID and port_role so that 2544 * no further IO can be issued. Changes are planned for later. 2545 * 2546 * Notes - the ndlp reference count is not decremented here since 2547 * since there is no nvme_transport api for devloss. Node ref count 2548 * is only adjusted in driver unload. 2549 */ 2550 void 2551 lpfc_nvme_unregister_port(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp) 2552 { 2553 #if (IS_ENABLED(CONFIG_NVME_FC)) 2554 int ret; 2555 struct nvme_fc_local_port *localport; 2556 struct lpfc_nvme_lport *lport; 2557 struct lpfc_nvme_rport *rport; 2558 struct nvme_fc_remote_port *remoteport = NULL; 2559 2560 localport = vport->localport; 2561 2562 /* This is fundamental error. The localport is always 2563 * available until driver unload. Just exit. 2564 */ 2565 if (!localport) 2566 return; 2567 2568 lport = (struct lpfc_nvme_lport *)localport->private; 2569 if (!lport) 2570 goto input_err; 2571 2572 spin_lock_irq(&ndlp->lock); 2573 rport = lpfc_ndlp_get_nrport(ndlp); 2574 if (rport) 2575 remoteport = rport->remoteport; 2576 spin_unlock_irq(&ndlp->lock); 2577 if (!remoteport) 2578 goto input_err; 2579 2580 lpfc_printf_vlog(vport, KERN_INFO, LOG_NVME_DISC, 2581 "6033 Unreg nvme remoteport x%px, portname x%llx, " 2582 "port_id x%06x, portstate x%x port type x%x " 2583 "refcnt %d\n", 2584 remoteport, remoteport->port_name, 2585 remoteport->port_id, remoteport->port_state, 2586 ndlp->nlp_type, kref_read(&ndlp->kref)); 2587 2588 /* Sanity check ndlp type. Only call for NVME ports. Don't 2589 * clear any rport state until the transport calls back. 2590 */ 2591 2592 if (ndlp->nlp_type & NLP_NVME_TARGET) { 2593 /* No concern about the role change on the nvme remoteport. 2594 * The transport will update it. 2595 */ 2596 spin_lock_irq(&vport->phba->hbalock); 2597 ndlp->fc4_xpt_flags |= NVME_XPT_UNREG_WAIT; 2598 spin_unlock_irq(&vport->phba->hbalock); 2599 2600 /* Don't let the host nvme transport keep sending keep-alives 2601 * on this remoteport. Vport is unloading, no recovery. The 2602 * return values is ignored. The upcall is a courtesy to the 2603 * transport. 2604 */ 2605 if (vport->load_flag & FC_UNLOADING) 2606 (void)nvme_fc_set_remoteport_devloss(remoteport, 0); 2607 2608 ret = nvme_fc_unregister_remoteport(remoteport); 2609 2610 /* The driver no longer knows if the nrport memory is valid. 2611 * because the controller teardown process has begun and 2612 * is asynchronous. Break the binding in the ndlp. Also 2613 * remove the register ndlp reference to setup node release. 2614 */ 2615 ndlp->nrport = NULL; 2616 lpfc_nlp_put(ndlp); 2617 if (ret != 0) { 2618 lpfc_printf_vlog(vport, KERN_ERR, LOG_TRACE_EVENT, 2619 "6167 NVME unregister failed %d " 2620 "port_state x%x\n", 2621 ret, remoteport->port_state); 2622 } 2623 } 2624 return; 2625 2626 input_err: 2627 #endif 2628 lpfc_printf_vlog(vport, KERN_ERR, LOG_TRACE_EVENT, 2629 "6168 State error: lport x%px, rport x%px FCID x%06x\n", 2630 vport->localport, ndlp->rport, ndlp->nlp_DID); 2631 } 2632 2633 /** 2634 * lpfc_sli4_nvme_pci_offline_aborted - Fast-path process of NVME xri abort 2635 * @phba: pointer to lpfc hba data structure. 2636 * @lpfc_ncmd: The nvme job structure for the request being aborted. 2637 * 2638 * This routine is invoked by the worker thread to process a SLI4 fast-path 2639 * NVME aborted xri. Aborted NVME IO commands are completed to the transport 2640 * here. 2641 **/ 2642 void 2643 lpfc_sli4_nvme_pci_offline_aborted(struct lpfc_hba *phba, 2644 struct lpfc_io_buf *lpfc_ncmd) 2645 { 2646 struct nvmefc_fcp_req *nvme_cmd = NULL; 2647 2648 lpfc_printf_log(phba, KERN_INFO, LOG_NVME_ABTS, 2649 "6533 %s nvme_cmd %p tag x%x abort complete and " 2650 "xri released\n", __func__, 2651 lpfc_ncmd->nvmeCmd, 2652 lpfc_ncmd->cur_iocbq.iotag); 2653 2654 /* Aborted NVME commands are required to not complete 2655 * before the abort exchange command fully completes. 2656 * Once completed, it is available via the put list. 2657 */ 2658 if (lpfc_ncmd->nvmeCmd) { 2659 nvme_cmd = lpfc_ncmd->nvmeCmd; 2660 nvme_cmd->transferred_length = 0; 2661 nvme_cmd->rcv_rsplen = 0; 2662 nvme_cmd->status = NVME_SC_INTERNAL; 2663 nvme_cmd->done(nvme_cmd); 2664 lpfc_ncmd->nvmeCmd = NULL; 2665 } 2666 lpfc_release_nvme_buf(phba, lpfc_ncmd); 2667 } 2668 2669 /** 2670 * lpfc_sli4_nvme_xri_aborted - Fast-path process of NVME xri abort 2671 * @phba: pointer to lpfc hba data structure. 2672 * @axri: pointer to the fcp xri abort wcqe structure. 2673 * @lpfc_ncmd: The nvme job structure for the request being aborted. 2674 * 2675 * This routine is invoked by the worker thread to process a SLI4 fast-path 2676 * NVME aborted xri. Aborted NVME IO commands are completed to the transport 2677 * here. 2678 **/ 2679 void 2680 lpfc_sli4_nvme_xri_aborted(struct lpfc_hba *phba, 2681 struct sli4_wcqe_xri_aborted *axri, 2682 struct lpfc_io_buf *lpfc_ncmd) 2683 { 2684 uint16_t xri = bf_get(lpfc_wcqe_xa_xri, axri); 2685 struct nvmefc_fcp_req *nvme_cmd = NULL; 2686 struct lpfc_nodelist *ndlp = lpfc_ncmd->ndlp; 2687 2688 2689 if (ndlp) 2690 lpfc_sli4_abts_err_handler(phba, ndlp, axri); 2691 2692 lpfc_printf_log(phba, KERN_INFO, LOG_NVME_ABTS, 2693 "6311 nvme_cmd %p xri x%x tag x%x abort complete and " 2694 "xri released\n", 2695 lpfc_ncmd->nvmeCmd, xri, 2696 lpfc_ncmd->cur_iocbq.iotag); 2697 2698 /* Aborted NVME commands are required to not complete 2699 * before the abort exchange command fully completes. 2700 * Once completed, it is available via the put list. 2701 */ 2702 if (lpfc_ncmd->nvmeCmd) { 2703 nvme_cmd = lpfc_ncmd->nvmeCmd; 2704 nvme_cmd->done(nvme_cmd); 2705 lpfc_ncmd->nvmeCmd = NULL; 2706 } 2707 lpfc_release_nvme_buf(phba, lpfc_ncmd); 2708 } 2709 2710 /** 2711 * lpfc_nvme_wait_for_io_drain - Wait for all NVME wqes to complete 2712 * @phba: Pointer to HBA context object. 2713 * 2714 * This function flushes all wqes in the nvme rings and frees all resources 2715 * in the txcmplq. This function does not issue abort wqes for the IO 2716 * commands in txcmplq, they will just be returned with 2717 * IOERR_SLI_DOWN. This function is invoked with EEH when device's PCI 2718 * slot has been permanently disabled. 2719 **/ 2720 void 2721 lpfc_nvme_wait_for_io_drain(struct lpfc_hba *phba) 2722 { 2723 struct lpfc_sli_ring *pring; 2724 u32 i, wait_cnt = 0; 2725 2726 if (phba->sli_rev < LPFC_SLI_REV4 || !phba->sli4_hba.hdwq) 2727 return; 2728 2729 /* Cycle through all IO rings and make sure all outstanding 2730 * WQEs have been removed from the txcmplqs. 2731 */ 2732 for (i = 0; i < phba->cfg_hdw_queue; i++) { 2733 if (!phba->sli4_hba.hdwq[i].io_wq) 2734 continue; 2735 pring = phba->sli4_hba.hdwq[i].io_wq->pring; 2736 2737 if (!pring) 2738 continue; 2739 2740 /* Retrieve everything on the txcmplq */ 2741 while (!list_empty(&pring->txcmplq)) { 2742 msleep(LPFC_XRI_EXCH_BUSY_WAIT_T1); 2743 wait_cnt++; 2744 2745 /* The sleep is 10mS. Every ten seconds, 2746 * dump a message. Something is wrong. 2747 */ 2748 if ((wait_cnt % 1000) == 0) { 2749 lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT, 2750 "6178 NVME IO not empty, " 2751 "cnt %d\n", wait_cnt); 2752 } 2753 } 2754 } 2755 2756 /* Make sure HBA is alive */ 2757 lpfc_issue_hb_tmo(phba); 2758 2759 } 2760 2761 void 2762 lpfc_nvme_cancel_iocb(struct lpfc_hba *phba, struct lpfc_iocbq *pwqeIn, 2763 uint32_t stat, uint32_t param) 2764 { 2765 #if (IS_ENABLED(CONFIG_NVME_FC)) 2766 struct lpfc_io_buf *lpfc_ncmd; 2767 struct nvmefc_fcp_req *nCmd; 2768 struct lpfc_wcqe_complete wcqe; 2769 struct lpfc_wcqe_complete *wcqep = &wcqe; 2770 2771 lpfc_ncmd = pwqeIn->io_buf; 2772 if (!lpfc_ncmd) { 2773 lpfc_sli_release_iocbq(phba, pwqeIn); 2774 return; 2775 } 2776 /* For abort iocb just return, IO iocb will do a done call */ 2777 if (bf_get(wqe_cmnd, &pwqeIn->wqe.gen_req.wqe_com) == 2778 CMD_ABORT_XRI_CX) { 2779 lpfc_sli_release_iocbq(phba, pwqeIn); 2780 return; 2781 } 2782 2783 spin_lock(&lpfc_ncmd->buf_lock); 2784 nCmd = lpfc_ncmd->nvmeCmd; 2785 if (!nCmd) { 2786 spin_unlock(&lpfc_ncmd->buf_lock); 2787 lpfc_release_nvme_buf(phba, lpfc_ncmd); 2788 return; 2789 } 2790 spin_unlock(&lpfc_ncmd->buf_lock); 2791 2792 lpfc_printf_log(phba, KERN_INFO, LOG_NVME_IOERR, 2793 "6194 NVME Cancel xri %x\n", 2794 lpfc_ncmd->cur_iocbq.sli4_xritag); 2795 2796 wcqep->word0 = 0; 2797 bf_set(lpfc_wcqe_c_status, wcqep, stat); 2798 wcqep->parameter = param; 2799 wcqep->word3 = 0; /* xb is 0 */ 2800 2801 /* Call release with XB=1 to queue the IO into the abort list. */ 2802 if (phba->sli.sli_flag & LPFC_SLI_ACTIVE) 2803 bf_set(lpfc_wcqe_c_xb, wcqep, 1); 2804 2805 memcpy(&pwqeIn->wcqe_cmpl, wcqep, sizeof(*wcqep)); 2806 (pwqeIn->cmd_cmpl)(phba, pwqeIn, pwqeIn); 2807 #endif 2808 } 2809