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/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. 232 */ 233 if (!(ndlp->fc4_xpt_flags & fc4_xpt_flags)) 234 lpfc_disc_state_machine(vport, ndlp, NULL, NLP_EVT_DEVICE_RM); 235 236 rport_err: 237 return; 238 } 239 240 /** 241 * lpfc_nvme_handle_lsreq - Process an unsolicited NVME LS request 242 * @phba: pointer to lpfc hba data structure. 243 * @axchg: pointer to exchange context for the NVME LS request 244 * 245 * This routine is used for processing an asychronously received NVME LS 246 * request. Any remaining validation is done and the LS is then forwarded 247 * to the nvme-fc transport via nvme_fc_rcv_ls_req(). 248 * 249 * The calling sequence should be: nvme_fc_rcv_ls_req() -> (processing) 250 * -> lpfc_nvme_xmt_ls_rsp/cmp -> req->done. 251 * __lpfc_nvme_xmt_ls_rsp_cmp should free the allocated axchg. 252 * 253 * Returns 0 if LS was handled and delivered to the transport 254 * Returns 1 if LS failed to be handled and should be dropped 255 */ 256 int 257 lpfc_nvme_handle_lsreq(struct lpfc_hba *phba, 258 struct lpfc_async_xchg_ctx *axchg) 259 { 260 #if (IS_ENABLED(CONFIG_NVME_FC)) 261 struct lpfc_vport *vport; 262 struct lpfc_nvme_rport *lpfc_rport; 263 struct nvme_fc_remote_port *remoteport; 264 struct lpfc_nvme_lport *lport; 265 uint32_t *payload = axchg->payload; 266 int rc; 267 268 vport = axchg->ndlp->vport; 269 lpfc_rport = axchg->ndlp->nrport; 270 if (!lpfc_rport) 271 return -EINVAL; 272 273 remoteport = lpfc_rport->remoteport; 274 if (!vport->localport || 275 vport->phba->hba_flag & HBA_IOQ_FLUSH) 276 return -EINVAL; 277 278 lport = vport->localport->private; 279 if (!lport) 280 return -EINVAL; 281 282 rc = nvme_fc_rcv_ls_req(remoteport, &axchg->ls_rsp, axchg->payload, 283 axchg->size); 284 285 lpfc_printf_log(phba, KERN_INFO, LOG_NVME_DISC, 286 "6205 NVME Unsol rcv: sz %d rc %d: %08x %08x %08x " 287 "%08x %08x %08x\n", 288 axchg->size, rc, 289 *payload, *(payload+1), *(payload+2), 290 *(payload+3), *(payload+4), *(payload+5)); 291 292 if (!rc) 293 return 0; 294 #endif 295 return 1; 296 } 297 298 /** 299 * __lpfc_nvme_ls_req_cmp - Generic completion handler for a NVME 300 * LS request. 301 * @phba: Pointer to HBA context object 302 * @vport: The local port that issued the LS 303 * @cmdwqe: Pointer to driver command WQE object. 304 * @wcqe: Pointer to driver response CQE object. 305 * 306 * This function is the generic completion handler for NVME LS requests. 307 * The function updates any states and statistics, calls the transport 308 * ls_req done() routine, then tears down the command and buffers used 309 * for the LS request. 310 **/ 311 void 312 __lpfc_nvme_ls_req_cmp(struct lpfc_hba *phba, struct lpfc_vport *vport, 313 struct lpfc_iocbq *cmdwqe, 314 struct lpfc_wcqe_complete *wcqe) 315 { 316 struct nvmefc_ls_req *pnvme_lsreq; 317 struct lpfc_dmabuf *buf_ptr; 318 struct lpfc_nodelist *ndlp; 319 int status; 320 321 pnvme_lsreq = cmdwqe->context_un.nvme_lsreq; 322 ndlp = cmdwqe->ndlp; 323 buf_ptr = cmdwqe->bpl_dmabuf; 324 325 status = bf_get(lpfc_wcqe_c_status, wcqe); 326 327 lpfc_printf_vlog(vport, KERN_INFO, LOG_NVME_DISC, 328 "6047 NVMEx LS REQ x%px cmpl DID %x Xri: %x " 329 "status %x reason x%x cmd:x%px lsreg:x%px bmp:x%px " 330 "ndlp:x%px\n", 331 pnvme_lsreq, ndlp ? ndlp->nlp_DID : 0, 332 cmdwqe->sli4_xritag, status, 333 (wcqe->parameter & 0xffff), 334 cmdwqe, pnvme_lsreq, cmdwqe->bpl_dmabuf, 335 ndlp); 336 337 lpfc_nvmeio_data(phba, "NVMEx LS CMPL: xri x%x stat x%x parm x%x\n", 338 cmdwqe->sli4_xritag, status, wcqe->parameter); 339 340 if (buf_ptr) { 341 lpfc_mbuf_free(phba, buf_ptr->virt, buf_ptr->phys); 342 kfree(buf_ptr); 343 cmdwqe->bpl_dmabuf = NULL; 344 } 345 if (pnvme_lsreq->done) { 346 if (status != CQE_STATUS_SUCCESS) 347 status = -ENXIO; 348 pnvme_lsreq->done(pnvme_lsreq, status); 349 } else { 350 lpfc_printf_vlog(vport, KERN_ERR, LOG_TRACE_EVENT, 351 "6046 NVMEx cmpl without done call back? " 352 "Data x%px DID %x Xri: %x status %x\n", 353 pnvme_lsreq, ndlp ? ndlp->nlp_DID : 0, 354 cmdwqe->sli4_xritag, status); 355 } 356 if (ndlp) { 357 lpfc_nlp_put(ndlp); 358 cmdwqe->ndlp = NULL; 359 } 360 lpfc_sli_release_iocbq(phba, cmdwqe); 361 } 362 363 static void 364 lpfc_nvme_ls_req_cmp(struct lpfc_hba *phba, struct lpfc_iocbq *cmdwqe, 365 struct lpfc_iocbq *rspwqe) 366 { 367 struct lpfc_vport *vport = cmdwqe->vport; 368 struct lpfc_nvme_lport *lport; 369 uint32_t status; 370 struct lpfc_wcqe_complete *wcqe = &rspwqe->wcqe_cmpl; 371 372 status = bf_get(lpfc_wcqe_c_status, wcqe); 373 374 if (vport->localport) { 375 lport = (struct lpfc_nvme_lport *)vport->localport->private; 376 if (lport) { 377 atomic_inc(&lport->fc4NvmeLsCmpls); 378 if (status) { 379 if (bf_get(lpfc_wcqe_c_xb, wcqe)) 380 atomic_inc(&lport->cmpl_ls_xb); 381 atomic_inc(&lport->cmpl_ls_err); 382 } 383 } 384 } 385 386 __lpfc_nvme_ls_req_cmp(phba, vport, cmdwqe, wcqe); 387 } 388 389 static int 390 lpfc_nvme_gen_req(struct lpfc_vport *vport, struct lpfc_dmabuf *bmp, 391 struct lpfc_dmabuf *inp, 392 struct nvmefc_ls_req *pnvme_lsreq, 393 void (*cmpl)(struct lpfc_hba *, struct lpfc_iocbq *, 394 struct lpfc_iocbq *), 395 struct lpfc_nodelist *ndlp, uint32_t num_entry, 396 uint32_t tmo, uint8_t retry) 397 { 398 struct lpfc_hba *phba = vport->phba; 399 union lpfc_wqe128 *wqe; 400 struct lpfc_iocbq *genwqe; 401 struct ulp_bde64 *bpl; 402 struct ulp_bde64 bde; 403 int i, rc, xmit_len, first_len; 404 405 /* Allocate buffer for command WQE */ 406 genwqe = lpfc_sli_get_iocbq(phba); 407 if (genwqe == NULL) 408 return 1; 409 410 wqe = &genwqe->wqe; 411 /* Initialize only 64 bytes */ 412 memset(wqe, 0, sizeof(union lpfc_wqe)); 413 414 genwqe->bpl_dmabuf = bmp; 415 genwqe->cmd_flag |= LPFC_IO_NVME_LS; 416 417 /* Save for completion so we can release these resources */ 418 genwqe->ndlp = lpfc_nlp_get(ndlp); 419 if (!genwqe->ndlp) { 420 dev_warn(&phba->pcidev->dev, 421 "Warning: Failed node ref, not sending LS_REQ\n"); 422 lpfc_sli_release_iocbq(phba, genwqe); 423 return 1; 424 } 425 426 genwqe->context_un.nvme_lsreq = pnvme_lsreq; 427 /* Fill in payload, bp points to frame payload */ 428 429 if (!tmo) 430 /* FC spec states we need 3 * ratov for CT requests */ 431 tmo = (3 * phba->fc_ratov); 432 433 /* For this command calculate the xmit length of the request bde. */ 434 xmit_len = 0; 435 first_len = 0; 436 bpl = (struct ulp_bde64 *)bmp->virt; 437 for (i = 0; i < num_entry; i++) { 438 bde.tus.w = bpl[i].tus.w; 439 if (bde.tus.f.bdeFlags != BUFF_TYPE_BDE_64) 440 break; 441 xmit_len += bde.tus.f.bdeSize; 442 if (i == 0) 443 first_len = xmit_len; 444 } 445 446 genwqe->num_bdes = num_entry; 447 genwqe->hba_wqidx = 0; 448 449 /* Words 0 - 2 */ 450 wqe->generic.bde.tus.f.bdeFlags = BUFF_TYPE_BDE_64; 451 wqe->generic.bde.tus.f.bdeSize = first_len; 452 wqe->generic.bde.addrLow = bpl[0].addrLow; 453 wqe->generic.bde.addrHigh = bpl[0].addrHigh; 454 455 /* Word 3 */ 456 wqe->gen_req.request_payload_len = first_len; 457 458 /* Word 4 */ 459 460 /* Word 5 */ 461 bf_set(wqe_dfctl, &wqe->gen_req.wge_ctl, 0); 462 bf_set(wqe_si, &wqe->gen_req.wge_ctl, 1); 463 bf_set(wqe_la, &wqe->gen_req.wge_ctl, 1); 464 bf_set(wqe_rctl, &wqe->gen_req.wge_ctl, FC_RCTL_ELS4_REQ); 465 bf_set(wqe_type, &wqe->gen_req.wge_ctl, FC_TYPE_NVME); 466 467 /* Word 6 */ 468 bf_set(wqe_ctxt_tag, &wqe->gen_req.wqe_com, 469 phba->sli4_hba.rpi_ids[ndlp->nlp_rpi]); 470 bf_set(wqe_xri_tag, &wqe->gen_req.wqe_com, genwqe->sli4_xritag); 471 472 /* Word 7 */ 473 bf_set(wqe_tmo, &wqe->gen_req.wqe_com, tmo); 474 bf_set(wqe_class, &wqe->gen_req.wqe_com, CLASS3); 475 bf_set(wqe_cmnd, &wqe->gen_req.wqe_com, CMD_GEN_REQUEST64_WQE); 476 bf_set(wqe_ct, &wqe->gen_req.wqe_com, SLI4_CT_RPI); 477 478 /* Word 8 */ 479 wqe->gen_req.wqe_com.abort_tag = genwqe->iotag; 480 481 /* Word 9 */ 482 bf_set(wqe_reqtag, &wqe->gen_req.wqe_com, genwqe->iotag); 483 484 /* Word 10 */ 485 bf_set(wqe_dbde, &wqe->gen_req.wqe_com, 1); 486 bf_set(wqe_iod, &wqe->gen_req.wqe_com, LPFC_WQE_IOD_READ); 487 bf_set(wqe_qosd, &wqe->gen_req.wqe_com, 1); 488 bf_set(wqe_lenloc, &wqe->gen_req.wqe_com, LPFC_WQE_LENLOC_NONE); 489 bf_set(wqe_ebde_cnt, &wqe->gen_req.wqe_com, 0); 490 491 /* Word 11 */ 492 bf_set(wqe_cqid, &wqe->gen_req.wqe_com, LPFC_WQE_CQ_ID_DEFAULT); 493 bf_set(wqe_cmd_type, &wqe->gen_req.wqe_com, OTHER_COMMAND); 494 495 496 /* Issue GEN REQ WQE for NPORT <did> */ 497 genwqe->cmd_cmpl = cmpl; 498 genwqe->drvrTimeout = tmo + LPFC_DRVR_TIMEOUT; 499 genwqe->vport = vport; 500 genwqe->retry = retry; 501 502 lpfc_nvmeio_data(phba, "NVME LS XMIT: xri x%x iotag x%x to x%06x\n", 503 genwqe->sli4_xritag, genwqe->iotag, ndlp->nlp_DID); 504 505 rc = lpfc_sli4_issue_wqe(phba, &phba->sli4_hba.hdwq[0], genwqe); 506 if (rc) { 507 lpfc_printf_vlog(vport, KERN_ERR, LOG_TRACE_EVENT, 508 "6045 Issue GEN REQ WQE to NPORT x%x " 509 "Data: x%x x%x rc x%x\n", 510 ndlp->nlp_DID, genwqe->iotag, 511 vport->port_state, rc); 512 lpfc_nlp_put(ndlp); 513 lpfc_sli_release_iocbq(phba, genwqe); 514 return 1; 515 } 516 517 lpfc_printf_vlog(vport, KERN_INFO, LOG_NVME_DISC | LOG_ELS, 518 "6050 Issue GEN REQ WQE to NPORT x%x " 519 "Data: oxid: x%x state: x%x wq:x%px lsreq:x%px " 520 "bmp:x%px xmit:%d 1st:%d\n", 521 ndlp->nlp_DID, genwqe->sli4_xritag, 522 vport->port_state, 523 genwqe, pnvme_lsreq, bmp, xmit_len, first_len); 524 return 0; 525 } 526 527 528 /** 529 * __lpfc_nvme_ls_req - Generic service routine to issue an NVME LS request 530 * @vport: The local port issuing the LS 531 * @ndlp: The remote port to send the LS to 532 * @pnvme_lsreq: Pointer to LS request structure from the transport 533 * @gen_req_cmp: Completion call-back 534 * 535 * Routine validates the ndlp, builds buffers and sends a GEN_REQUEST 536 * WQE to perform the LS operation. 537 * 538 * Return value : 539 * 0 - Success 540 * non-zero: various error codes, in form of -Exxx 541 **/ 542 int 543 __lpfc_nvme_ls_req(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp, 544 struct nvmefc_ls_req *pnvme_lsreq, 545 void (*gen_req_cmp)(struct lpfc_hba *phba, 546 struct lpfc_iocbq *cmdwqe, 547 struct lpfc_iocbq *rspwqe)) 548 { 549 struct lpfc_dmabuf *bmp; 550 struct ulp_bde64 *bpl; 551 int ret; 552 uint16_t ntype, nstate; 553 554 if (!ndlp) { 555 lpfc_printf_vlog(vport, KERN_ERR, LOG_TRACE_EVENT, 556 "6051 NVMEx LS REQ: Bad NDLP x%px, Failing " 557 "LS Req\n", 558 ndlp); 559 return -ENODEV; 560 } 561 562 ntype = ndlp->nlp_type; 563 nstate = ndlp->nlp_state; 564 if ((ntype & NLP_NVME_TARGET && nstate != NLP_STE_MAPPED_NODE) || 565 (ntype & NLP_NVME_INITIATOR && nstate != NLP_STE_UNMAPPED_NODE)) { 566 lpfc_printf_vlog(vport, KERN_ERR, LOG_TRACE_EVENT, 567 "6088 NVMEx LS REQ: Fail DID x%06x not " 568 "ready for IO. Type x%x, State x%x\n", 569 ndlp->nlp_DID, ntype, nstate); 570 return -ENODEV; 571 } 572 if (vport->phba->hba_flag & HBA_IOQ_FLUSH) 573 return -ENODEV; 574 575 if (!vport->phba->sli4_hba.nvmels_wq) 576 return -ENOMEM; 577 578 /* 579 * there are two dma buf in the request, actually there is one and 580 * the second one is just the start address + cmd size. 581 * Before calling lpfc_nvme_gen_req these buffers need to be wrapped 582 * in a lpfc_dmabuf struct. When freeing we just free the wrapper 583 * because the nvem layer owns the data bufs. 584 * We do not have to break these packets open, we don't care what is 585 * in them. And we do not have to look at the resonse data, we only 586 * care that we got a response. All of the caring is going to happen 587 * in the nvme-fc layer. 588 */ 589 590 bmp = kmalloc(sizeof(*bmp), GFP_KERNEL); 591 if (!bmp) { 592 lpfc_printf_vlog(vport, KERN_ERR, LOG_TRACE_EVENT, 593 "6044 NVMEx LS REQ: Could not alloc LS buf " 594 "for DID %x\n", 595 ndlp->nlp_DID); 596 return -ENOMEM; 597 } 598 599 bmp->virt = lpfc_mbuf_alloc(vport->phba, MEM_PRI, &(bmp->phys)); 600 if (!bmp->virt) { 601 lpfc_printf_vlog(vport, KERN_ERR, LOG_TRACE_EVENT, 602 "6042 NVMEx LS REQ: Could not alloc mbuf " 603 "for DID %x\n", 604 ndlp->nlp_DID); 605 kfree(bmp); 606 return -ENOMEM; 607 } 608 609 INIT_LIST_HEAD(&bmp->list); 610 611 bpl = (struct ulp_bde64 *)bmp->virt; 612 bpl->addrHigh = le32_to_cpu(putPaddrHigh(pnvme_lsreq->rqstdma)); 613 bpl->addrLow = le32_to_cpu(putPaddrLow(pnvme_lsreq->rqstdma)); 614 bpl->tus.f.bdeFlags = 0; 615 bpl->tus.f.bdeSize = pnvme_lsreq->rqstlen; 616 bpl->tus.w = le32_to_cpu(bpl->tus.w); 617 bpl++; 618 619 bpl->addrHigh = le32_to_cpu(putPaddrHigh(pnvme_lsreq->rspdma)); 620 bpl->addrLow = le32_to_cpu(putPaddrLow(pnvme_lsreq->rspdma)); 621 bpl->tus.f.bdeFlags = BUFF_TYPE_BDE_64I; 622 bpl->tus.f.bdeSize = pnvme_lsreq->rsplen; 623 bpl->tus.w = le32_to_cpu(bpl->tus.w); 624 625 lpfc_printf_vlog(vport, KERN_INFO, LOG_NVME_DISC, 626 "6149 NVMEx LS REQ: Issue to DID 0x%06x lsreq x%px, " 627 "rqstlen:%d rsplen:%d %pad %pad\n", 628 ndlp->nlp_DID, pnvme_lsreq, pnvme_lsreq->rqstlen, 629 pnvme_lsreq->rsplen, &pnvme_lsreq->rqstdma, 630 &pnvme_lsreq->rspdma); 631 632 ret = lpfc_nvme_gen_req(vport, bmp, pnvme_lsreq->rqstaddr, 633 pnvme_lsreq, gen_req_cmp, ndlp, 2, 634 pnvme_lsreq->timeout, 0); 635 if (ret != WQE_SUCCESS) { 636 lpfc_printf_vlog(vport, KERN_ERR, LOG_TRACE_EVENT, 637 "6052 NVMEx REQ: EXIT. issue ls wqe failed " 638 "lsreq x%px Status %x DID %x\n", 639 pnvme_lsreq, ret, ndlp->nlp_DID); 640 lpfc_mbuf_free(vport->phba, bmp->virt, bmp->phys); 641 kfree(bmp); 642 return -EIO; 643 } 644 645 return 0; 646 } 647 648 /** 649 * lpfc_nvme_ls_req - Issue an NVME Link Service request 650 * @pnvme_lport: Transport localport that LS is to be issued from. 651 * @pnvme_rport: Transport remoteport that LS is to be sent to. 652 * @pnvme_lsreq: the transport nvme_ls_req structure for the LS 653 * 654 * Driver registers this routine to handle any link service request 655 * from the nvme_fc transport to a remote nvme-aware port. 656 * 657 * Return value : 658 * 0 - Success 659 * non-zero: various error codes, in form of -Exxx 660 **/ 661 static int 662 lpfc_nvme_ls_req(struct nvme_fc_local_port *pnvme_lport, 663 struct nvme_fc_remote_port *pnvme_rport, 664 struct nvmefc_ls_req *pnvme_lsreq) 665 { 666 struct lpfc_nvme_lport *lport; 667 struct lpfc_nvme_rport *rport; 668 struct lpfc_vport *vport; 669 int ret; 670 671 lport = (struct lpfc_nvme_lport *)pnvme_lport->private; 672 rport = (struct lpfc_nvme_rport *)pnvme_rport->private; 673 if (unlikely(!lport) || unlikely(!rport)) 674 return -EINVAL; 675 676 vport = lport->vport; 677 if (vport->load_flag & FC_UNLOADING || 678 vport->phba->hba_flag & HBA_IOQ_FLUSH) 679 return -ENODEV; 680 681 atomic_inc(&lport->fc4NvmeLsRequests); 682 683 ret = __lpfc_nvme_ls_req(vport, rport->ndlp, pnvme_lsreq, 684 lpfc_nvme_ls_req_cmp); 685 if (ret) 686 atomic_inc(&lport->xmt_ls_err); 687 688 return ret; 689 } 690 691 /** 692 * __lpfc_nvme_ls_abort - Generic service routine to abort a prior 693 * NVME LS request 694 * @vport: The local port that issued the LS 695 * @ndlp: The remote port the LS was sent to 696 * @pnvme_lsreq: Pointer to LS request structure from the transport 697 * 698 * The driver validates the ndlp, looks for the LS, and aborts the 699 * LS if found. 700 * 701 * Returns: 702 * 0 : if LS found and aborted 703 * non-zero: various error conditions in form -Exxx 704 **/ 705 int 706 __lpfc_nvme_ls_abort(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp, 707 struct nvmefc_ls_req *pnvme_lsreq) 708 { 709 struct lpfc_hba *phba = vport->phba; 710 struct lpfc_sli_ring *pring; 711 struct lpfc_iocbq *wqe, *next_wqe; 712 bool foundit = false; 713 714 if (!ndlp) { 715 lpfc_printf_vlog(vport, KERN_ERR, LOG_TRACE_EVENT, 716 "6049 NVMEx LS REQ Abort: Bad NDLP x%px DID " 717 "x%06x, Failing LS Req\n", 718 ndlp, ndlp ? ndlp->nlp_DID : 0); 719 return -EINVAL; 720 } 721 722 lpfc_printf_vlog(vport, KERN_INFO, LOG_NVME_DISC | LOG_NVME_ABTS, 723 "6040 NVMEx LS REQ Abort: Issue LS_ABORT for lsreq " 724 "x%px rqstlen:%d rsplen:%d %pad %pad\n", 725 pnvme_lsreq, pnvme_lsreq->rqstlen, 726 pnvme_lsreq->rsplen, &pnvme_lsreq->rqstdma, 727 &pnvme_lsreq->rspdma); 728 729 /* 730 * Lock the ELS ring txcmplq and look for the wqe that matches 731 * this ELS. If found, issue an abort on the wqe. 732 */ 733 pring = phba->sli4_hba.nvmels_wq->pring; 734 spin_lock_irq(&phba->hbalock); 735 spin_lock(&pring->ring_lock); 736 list_for_each_entry_safe(wqe, next_wqe, &pring->txcmplq, list) { 737 if (wqe->context_un.nvme_lsreq == pnvme_lsreq) { 738 wqe->cmd_flag |= LPFC_DRIVER_ABORTED; 739 foundit = true; 740 break; 741 } 742 } 743 spin_unlock(&pring->ring_lock); 744 745 if (foundit) 746 lpfc_sli_issue_abort_iotag(phba, pring, wqe, NULL); 747 spin_unlock_irq(&phba->hbalock); 748 749 if (foundit) 750 return 0; 751 752 lpfc_printf_vlog(vport, KERN_INFO, LOG_NVME_DISC | LOG_NVME_ABTS, 753 "6213 NVMEx LS REQ Abort: Unable to locate req x%px\n", 754 pnvme_lsreq); 755 return -EINVAL; 756 } 757 758 static int 759 lpfc_nvme_xmt_ls_rsp(struct nvme_fc_local_port *localport, 760 struct nvme_fc_remote_port *remoteport, 761 struct nvmefc_ls_rsp *ls_rsp) 762 { 763 struct lpfc_async_xchg_ctx *axchg = 764 container_of(ls_rsp, struct lpfc_async_xchg_ctx, ls_rsp); 765 struct lpfc_nvme_lport *lport; 766 int rc; 767 768 if (axchg->phba->pport->load_flag & FC_UNLOADING) 769 return -ENODEV; 770 771 lport = (struct lpfc_nvme_lport *)localport->private; 772 773 rc = __lpfc_nvme_xmt_ls_rsp(axchg, ls_rsp, __lpfc_nvme_xmt_ls_rsp_cmp); 774 775 if (rc) { 776 /* 777 * unless the failure is due to having already sent 778 * the response, an abort will be generated for the 779 * exchange if the rsp can't be sent. 780 */ 781 if (rc != -EALREADY) 782 atomic_inc(&lport->xmt_ls_abort); 783 return rc; 784 } 785 786 return 0; 787 } 788 789 /** 790 * lpfc_nvme_ls_abort - Abort a prior NVME LS request 791 * @pnvme_lport: Transport localport that LS is to be issued from. 792 * @pnvme_rport: Transport remoteport that LS is to be sent to. 793 * @pnvme_lsreq: the transport nvme_ls_req structure for the LS 794 * 795 * Driver registers this routine to abort a NVME LS request that is 796 * in progress (from the transports perspective). 797 **/ 798 static void 799 lpfc_nvme_ls_abort(struct nvme_fc_local_port *pnvme_lport, 800 struct nvme_fc_remote_port *pnvme_rport, 801 struct nvmefc_ls_req *pnvme_lsreq) 802 { 803 struct lpfc_nvme_lport *lport; 804 struct lpfc_vport *vport; 805 struct lpfc_nodelist *ndlp; 806 int ret; 807 808 lport = (struct lpfc_nvme_lport *)pnvme_lport->private; 809 if (unlikely(!lport)) 810 return; 811 vport = lport->vport; 812 813 if (vport->load_flag & FC_UNLOADING) 814 return; 815 816 ndlp = lpfc_findnode_did(vport, pnvme_rport->port_id); 817 818 ret = __lpfc_nvme_ls_abort(vport, ndlp, pnvme_lsreq); 819 if (!ret) 820 atomic_inc(&lport->xmt_ls_abort); 821 } 822 823 /* Fix up the existing sgls for NVME IO. */ 824 static inline void 825 lpfc_nvme_adj_fcp_sgls(struct lpfc_vport *vport, 826 struct lpfc_io_buf *lpfc_ncmd, 827 struct nvmefc_fcp_req *nCmd) 828 { 829 struct lpfc_hba *phba = vport->phba; 830 struct sli4_sge *sgl; 831 union lpfc_wqe128 *wqe; 832 uint32_t *wptr, *dptr; 833 834 /* 835 * Get a local pointer to the built-in wqe and correct 836 * the cmd size to match NVME's 96 bytes and fix 837 * the dma address. 838 */ 839 840 wqe = &lpfc_ncmd->cur_iocbq.wqe; 841 842 /* 843 * Adjust the FCP_CMD and FCP_RSP DMA data and sge_len to 844 * match NVME. NVME sends 96 bytes. Also, use the 845 * nvme commands command and response dma addresses 846 * rather than the virtual memory to ease the restore 847 * operation. 848 */ 849 sgl = lpfc_ncmd->dma_sgl; 850 sgl->sge_len = cpu_to_le32(nCmd->cmdlen); 851 if (phba->cfg_nvme_embed_cmd) { 852 sgl->addr_hi = 0; 853 sgl->addr_lo = 0; 854 855 /* Word 0-2 - NVME CMND IU (embedded payload) */ 856 wqe->generic.bde.tus.f.bdeFlags = BUFF_TYPE_BDE_IMMED; 857 wqe->generic.bde.tus.f.bdeSize = 56; 858 wqe->generic.bde.addrHigh = 0; 859 wqe->generic.bde.addrLow = 64; /* Word 16 */ 860 861 /* Word 10 - dbde is 0, wqes is 1 in template */ 862 863 /* 864 * Embed the payload in the last half of the WQE 865 * WQE words 16-30 get the NVME CMD IU payload 866 * 867 * WQE words 16-19 get payload Words 1-4 868 * WQE words 20-21 get payload Words 6-7 869 * WQE words 22-29 get payload Words 16-23 870 */ 871 wptr = &wqe->words[16]; /* WQE ptr */ 872 dptr = (uint32_t *)nCmd->cmdaddr; /* payload ptr */ 873 dptr++; /* Skip Word 0 in payload */ 874 875 *wptr++ = *dptr++; /* Word 1 */ 876 *wptr++ = *dptr++; /* Word 2 */ 877 *wptr++ = *dptr++; /* Word 3 */ 878 *wptr++ = *dptr++; /* Word 4 */ 879 dptr++; /* Skip Word 5 in payload */ 880 *wptr++ = *dptr++; /* Word 6 */ 881 *wptr++ = *dptr++; /* Word 7 */ 882 dptr += 8; /* Skip Words 8-15 in payload */ 883 *wptr++ = *dptr++; /* Word 16 */ 884 *wptr++ = *dptr++; /* Word 17 */ 885 *wptr++ = *dptr++; /* Word 18 */ 886 *wptr++ = *dptr++; /* Word 19 */ 887 *wptr++ = *dptr++; /* Word 20 */ 888 *wptr++ = *dptr++; /* Word 21 */ 889 *wptr++ = *dptr++; /* Word 22 */ 890 *wptr = *dptr; /* Word 23 */ 891 } else { 892 sgl->addr_hi = cpu_to_le32(putPaddrHigh(nCmd->cmddma)); 893 sgl->addr_lo = cpu_to_le32(putPaddrLow(nCmd->cmddma)); 894 895 /* Word 0-2 - NVME CMND IU Inline BDE */ 896 wqe->generic.bde.tus.f.bdeFlags = BUFF_TYPE_BDE_64; 897 wqe->generic.bde.tus.f.bdeSize = nCmd->cmdlen; 898 wqe->generic.bde.addrHigh = sgl->addr_hi; 899 wqe->generic.bde.addrLow = sgl->addr_lo; 900 901 /* Word 10 */ 902 bf_set(wqe_dbde, &wqe->generic.wqe_com, 1); 903 bf_set(wqe_wqes, &wqe->generic.wqe_com, 0); 904 } 905 906 sgl++; 907 908 /* Setup the physical region for the FCP RSP */ 909 sgl->addr_hi = cpu_to_le32(putPaddrHigh(nCmd->rspdma)); 910 sgl->addr_lo = cpu_to_le32(putPaddrLow(nCmd->rspdma)); 911 sgl->word2 = le32_to_cpu(sgl->word2); 912 if (nCmd->sg_cnt) 913 bf_set(lpfc_sli4_sge_last, sgl, 0); 914 else 915 bf_set(lpfc_sli4_sge_last, sgl, 1); 916 sgl->word2 = cpu_to_le32(sgl->word2); 917 sgl->sge_len = cpu_to_le32(nCmd->rsplen); 918 } 919 920 921 /* 922 * lpfc_nvme_io_cmd_cmpl - Complete an NVME-over-FCP IO 923 * 924 * Driver registers this routine as it io request handler. This 925 * routine issues an fcp WQE with data from the @lpfc_nvme_fcpreq 926 * data structure to the rport indicated in @lpfc_nvme_rport. 927 * 928 * Return value : 929 * 0 - Success 930 * TODO: What are the failure codes. 931 **/ 932 static void 933 lpfc_nvme_io_cmd_cmpl(struct lpfc_hba *phba, struct lpfc_iocbq *pwqeIn, 934 struct lpfc_iocbq *pwqeOut) 935 { 936 struct lpfc_io_buf *lpfc_ncmd = pwqeIn->io_buf; 937 struct lpfc_wcqe_complete *wcqe = &pwqeOut->wcqe_cmpl; 938 struct lpfc_vport *vport = pwqeIn->vport; 939 struct nvmefc_fcp_req *nCmd; 940 struct nvme_fc_ersp_iu *ep; 941 struct nvme_fc_cmd_iu *cp; 942 struct lpfc_nodelist *ndlp; 943 struct lpfc_nvme_fcpreq_priv *freqpriv; 944 struct lpfc_nvme_lport *lport; 945 uint32_t code, status, idx; 946 uint16_t cid, sqhd, data; 947 uint32_t *ptr; 948 uint32_t lat; 949 bool call_done = false; 950 #ifdef CONFIG_SCSI_LPFC_DEBUG_FS 951 int cpu; 952 #endif 953 bool offline = false; 954 955 /* Sanity check on return of outstanding command */ 956 if (!lpfc_ncmd) { 957 lpfc_printf_vlog(vport, KERN_ERR, LOG_TRACE_EVENT, 958 "6071 Null lpfc_ncmd pointer. No " 959 "release, skip completion\n"); 960 return; 961 } 962 963 /* Guard against abort handler being called at same time */ 964 spin_lock(&lpfc_ncmd->buf_lock); 965 966 if (!lpfc_ncmd->nvmeCmd) { 967 spin_unlock(&lpfc_ncmd->buf_lock); 968 lpfc_printf_vlog(vport, KERN_ERR, LOG_TRACE_EVENT, 969 "6066 Missing cmpl ptrs: lpfc_ncmd x%px, " 970 "nvmeCmd x%px\n", 971 lpfc_ncmd, lpfc_ncmd->nvmeCmd); 972 973 /* Release the lpfc_ncmd regardless of the missing elements. */ 974 lpfc_release_nvme_buf(phba, lpfc_ncmd); 975 return; 976 } 977 nCmd = lpfc_ncmd->nvmeCmd; 978 status = bf_get(lpfc_wcqe_c_status, wcqe); 979 980 idx = lpfc_ncmd->cur_iocbq.hba_wqidx; 981 phba->sli4_hba.hdwq[idx].nvme_cstat.io_cmpls++; 982 983 if (unlikely(status && vport->localport)) { 984 lport = (struct lpfc_nvme_lport *)vport->localport->private; 985 if (lport) { 986 if (bf_get(lpfc_wcqe_c_xb, wcqe)) 987 atomic_inc(&lport->cmpl_fcp_xb); 988 atomic_inc(&lport->cmpl_fcp_err); 989 } 990 } 991 992 lpfc_nvmeio_data(phba, "NVME FCP CMPL: xri x%x stat x%x parm x%x\n", 993 lpfc_ncmd->cur_iocbq.sli4_xritag, 994 status, wcqe->parameter); 995 /* 996 * Catch race where our node has transitioned, but the 997 * transport is still transitioning. 998 */ 999 ndlp = lpfc_ncmd->ndlp; 1000 if (!ndlp) { 1001 lpfc_printf_vlog(vport, KERN_ERR, LOG_TRACE_EVENT, 1002 "6062 Ignoring NVME cmpl. No ndlp\n"); 1003 goto out_err; 1004 } 1005 1006 code = bf_get(lpfc_wcqe_c_code, wcqe); 1007 if (code == CQE_CODE_NVME_ERSP) { 1008 /* For this type of CQE, we need to rebuild the rsp */ 1009 ep = (struct nvme_fc_ersp_iu *)nCmd->rspaddr; 1010 1011 /* 1012 * Get Command Id from cmd to plug into response. This 1013 * code is not needed in the next NVME Transport drop. 1014 */ 1015 cp = (struct nvme_fc_cmd_iu *)nCmd->cmdaddr; 1016 cid = cp->sqe.common.command_id; 1017 1018 /* 1019 * RSN is in CQE word 2 1020 * SQHD is in CQE Word 3 bits 15:0 1021 * Cmd Specific info is in CQE Word 1 1022 * and in CQE Word 0 bits 15:0 1023 */ 1024 sqhd = bf_get(lpfc_wcqe_c_sqhead, wcqe); 1025 1026 /* Now lets build the NVME ERSP IU */ 1027 ep->iu_len = cpu_to_be16(8); 1028 ep->rsn = wcqe->parameter; 1029 ep->xfrd_len = cpu_to_be32(nCmd->payload_length); 1030 ep->rsvd12 = 0; 1031 ptr = (uint32_t *)&ep->cqe.result.u64; 1032 *ptr++ = wcqe->total_data_placed; 1033 data = bf_get(lpfc_wcqe_c_ersp0, wcqe); 1034 *ptr = (uint32_t)data; 1035 ep->cqe.sq_head = sqhd; 1036 ep->cqe.sq_id = nCmd->sqid; 1037 ep->cqe.command_id = cid; 1038 ep->cqe.status = 0; 1039 1040 lpfc_ncmd->status = IOSTAT_SUCCESS; 1041 lpfc_ncmd->result = 0; 1042 nCmd->rcv_rsplen = LPFC_NVME_ERSP_LEN; 1043 nCmd->transferred_length = nCmd->payload_length; 1044 } else { 1045 lpfc_ncmd->status = status; 1046 lpfc_ncmd->result = (wcqe->parameter & IOERR_PARAM_MASK); 1047 1048 /* For NVME, the only failure path that results in an 1049 * IO error is when the adapter rejects it. All other 1050 * conditions are a success case and resolved by the 1051 * transport. 1052 * IOSTAT_FCP_RSP_ERROR means: 1053 * 1. Length of data received doesn't match total 1054 * transfer length in WQE 1055 * 2. If the RSP payload does NOT match these cases: 1056 * a. RSP length 12/24 bytes and all zeros 1057 * b. NVME ERSP 1058 */ 1059 switch (lpfc_ncmd->status) { 1060 case IOSTAT_SUCCESS: 1061 nCmd->transferred_length = wcqe->total_data_placed; 1062 nCmd->rcv_rsplen = 0; 1063 nCmd->status = 0; 1064 break; 1065 case IOSTAT_FCP_RSP_ERROR: 1066 nCmd->transferred_length = wcqe->total_data_placed; 1067 nCmd->rcv_rsplen = wcqe->parameter; 1068 nCmd->status = 0; 1069 1070 /* Get the NVME cmd details for this unique error. */ 1071 cp = (struct nvme_fc_cmd_iu *)nCmd->cmdaddr; 1072 ep = (struct nvme_fc_ersp_iu *)nCmd->rspaddr; 1073 1074 /* Check if this is really an ERSP */ 1075 if (nCmd->rcv_rsplen == LPFC_NVME_ERSP_LEN) { 1076 lpfc_ncmd->status = IOSTAT_SUCCESS; 1077 lpfc_ncmd->result = 0; 1078 1079 lpfc_printf_vlog(vport, KERN_INFO, LOG_NVME, 1080 "6084 NVME FCP_ERR ERSP: " 1081 "xri %x placed x%x opcode x%x cmd_id " 1082 "x%x cqe_status x%x\n", 1083 lpfc_ncmd->cur_iocbq.sli4_xritag, 1084 wcqe->total_data_placed, 1085 cp->sqe.common.opcode, 1086 cp->sqe.common.command_id, 1087 ep->cqe.status); 1088 break; 1089 } 1090 lpfc_printf_vlog(vport, KERN_ERR, LOG_TRACE_EVENT, 1091 "6081 NVME Completion Protocol Error: " 1092 "xri %x status x%x result x%x " 1093 "placed x%x opcode x%x cmd_id x%x, " 1094 "cqe_status x%x\n", 1095 lpfc_ncmd->cur_iocbq.sli4_xritag, 1096 lpfc_ncmd->status, lpfc_ncmd->result, 1097 wcqe->total_data_placed, 1098 cp->sqe.common.opcode, 1099 cp->sqe.common.command_id, 1100 ep->cqe.status); 1101 break; 1102 case IOSTAT_LOCAL_REJECT: 1103 /* Let fall through to set command final state. */ 1104 if (lpfc_ncmd->result == IOERR_ABORT_REQUESTED) 1105 lpfc_printf_vlog(vport, KERN_INFO, 1106 LOG_NVME_IOERR, 1107 "6032 Delay Aborted cmd x%px " 1108 "nvme cmd x%px, xri x%x, " 1109 "xb %d\n", 1110 lpfc_ncmd, nCmd, 1111 lpfc_ncmd->cur_iocbq.sli4_xritag, 1112 bf_get(lpfc_wcqe_c_xb, wcqe)); 1113 fallthrough; 1114 default: 1115 out_err: 1116 lpfc_printf_vlog(vport, KERN_INFO, LOG_NVME_IOERR, 1117 "6072 NVME Completion Error: xri %x " 1118 "status x%x result x%x [x%x] " 1119 "placed x%x\n", 1120 lpfc_ncmd->cur_iocbq.sli4_xritag, 1121 lpfc_ncmd->status, lpfc_ncmd->result, 1122 wcqe->parameter, 1123 wcqe->total_data_placed); 1124 nCmd->transferred_length = 0; 1125 nCmd->rcv_rsplen = 0; 1126 nCmd->status = NVME_SC_INTERNAL; 1127 if (pci_channel_offline(vport->phba->pcidev) || 1128 lpfc_ncmd->result == IOERR_SLI_DOWN) 1129 offline = true; 1130 } 1131 } 1132 1133 /* pick up SLI4 exhange busy condition */ 1134 if (bf_get(lpfc_wcqe_c_xb, wcqe) && !offline) 1135 lpfc_ncmd->flags |= LPFC_SBUF_XBUSY; 1136 else 1137 lpfc_ncmd->flags &= ~LPFC_SBUF_XBUSY; 1138 1139 /* Update stats and complete the IO. There is 1140 * no need for dma unprep because the nvme_transport 1141 * owns the dma address. 1142 */ 1143 #ifdef CONFIG_SCSI_LPFC_DEBUG_FS 1144 if (lpfc_ncmd->ts_cmd_start) { 1145 lpfc_ncmd->ts_isr_cmpl = pwqeIn->isr_timestamp; 1146 lpfc_ncmd->ts_data_io = ktime_get_ns(); 1147 phba->ktime_last_cmd = lpfc_ncmd->ts_data_io; 1148 lpfc_io_ktime(phba, lpfc_ncmd); 1149 } 1150 if (unlikely(phba->hdwqstat_on & LPFC_CHECK_NVME_IO)) { 1151 cpu = raw_smp_processor_id(); 1152 this_cpu_inc(phba->sli4_hba.c_stat->cmpl_io); 1153 if (lpfc_ncmd->cpu != cpu) 1154 lpfc_printf_vlog(vport, 1155 KERN_INFO, LOG_NVME_IOERR, 1156 "6701 CPU Check cmpl: " 1157 "cpu %d expect %d\n", 1158 cpu, lpfc_ncmd->cpu); 1159 } 1160 #endif 1161 1162 /* NVME targets need completion held off until the abort exchange 1163 * completes unless the NVME Rport is getting unregistered. 1164 */ 1165 1166 if (!(lpfc_ncmd->flags & LPFC_SBUF_XBUSY)) { 1167 freqpriv = nCmd->private; 1168 freqpriv->nvme_buf = NULL; 1169 lpfc_ncmd->nvmeCmd = NULL; 1170 call_done = true; 1171 } 1172 spin_unlock(&lpfc_ncmd->buf_lock); 1173 1174 /* Check if IO qualified for CMF */ 1175 if (phba->cmf_active_mode != LPFC_CFG_OFF && 1176 nCmd->io_dir == NVMEFC_FCP_READ && 1177 nCmd->payload_length) { 1178 /* Used when calculating average latency */ 1179 lat = ktime_get_ns() - lpfc_ncmd->rx_cmd_start; 1180 lpfc_update_cmf_cmpl(phba, lat, nCmd->payload_length, NULL); 1181 } 1182 1183 if (call_done) 1184 nCmd->done(nCmd); 1185 1186 /* Call release with XB=1 to queue the IO into the abort list. */ 1187 lpfc_release_nvme_buf(phba, lpfc_ncmd); 1188 } 1189 1190 1191 /** 1192 * lpfc_nvme_prep_io_cmd - Issue an NVME-over-FCP IO 1193 * @vport: pointer to a host virtual N_Port data structure 1194 * @lpfc_ncmd: Pointer to lpfc scsi command 1195 * @pnode: pointer to a node-list data structure 1196 * @cstat: pointer to the control status structure 1197 * 1198 * Driver registers this routine as it io request handler. This 1199 * routine issues an fcp WQE with data from the @lpfc_nvme_fcpreq 1200 * data structure to the rport indicated in @lpfc_nvme_rport. 1201 * 1202 * Return value : 1203 * 0 - Success 1204 * TODO: What are the failure codes. 1205 **/ 1206 static int 1207 lpfc_nvme_prep_io_cmd(struct lpfc_vport *vport, 1208 struct lpfc_io_buf *lpfc_ncmd, 1209 struct lpfc_nodelist *pnode, 1210 struct lpfc_fc4_ctrl_stat *cstat) 1211 { 1212 struct lpfc_hba *phba = vport->phba; 1213 struct nvmefc_fcp_req *nCmd = lpfc_ncmd->nvmeCmd; 1214 struct nvme_common_command *sqe; 1215 struct lpfc_iocbq *pwqeq = &lpfc_ncmd->cur_iocbq; 1216 union lpfc_wqe128 *wqe = &pwqeq->wqe; 1217 uint32_t req_len; 1218 1219 /* 1220 * There are three possibilities here - use scatter-gather segment, use 1221 * the single mapping, or neither. 1222 */ 1223 if (nCmd->sg_cnt) { 1224 if (nCmd->io_dir == NVMEFC_FCP_WRITE) { 1225 /* From the iwrite template, initialize words 7 - 11 */ 1226 memcpy(&wqe->words[7], 1227 &lpfc_iwrite_cmd_template.words[7], 1228 sizeof(uint32_t) * 5); 1229 1230 /* Word 4 */ 1231 wqe->fcp_iwrite.total_xfer_len = nCmd->payload_length; 1232 1233 /* Word 5 */ 1234 if ((phba->cfg_nvme_enable_fb) && 1235 (pnode->nlp_flag & NLP_FIRSTBURST)) { 1236 req_len = lpfc_ncmd->nvmeCmd->payload_length; 1237 if (req_len < pnode->nvme_fb_size) 1238 wqe->fcp_iwrite.initial_xfer_len = 1239 req_len; 1240 else 1241 wqe->fcp_iwrite.initial_xfer_len = 1242 pnode->nvme_fb_size; 1243 } else { 1244 wqe->fcp_iwrite.initial_xfer_len = 0; 1245 } 1246 cstat->output_requests++; 1247 } else { 1248 /* From the iread template, initialize words 7 - 11 */ 1249 memcpy(&wqe->words[7], 1250 &lpfc_iread_cmd_template.words[7], 1251 sizeof(uint32_t) * 5); 1252 1253 /* Word 4 */ 1254 wqe->fcp_iread.total_xfer_len = nCmd->payload_length; 1255 1256 /* Word 5 */ 1257 wqe->fcp_iread.rsrvd5 = 0; 1258 1259 /* For a CMF Managed port, iod must be zero'ed */ 1260 if (phba->cmf_active_mode == LPFC_CFG_MANAGED) 1261 bf_set(wqe_iod, &wqe->fcp_iread.wqe_com, 1262 LPFC_WQE_IOD_NONE); 1263 cstat->input_requests++; 1264 } 1265 } else { 1266 /* From the icmnd template, initialize words 4 - 11 */ 1267 memcpy(&wqe->words[4], &lpfc_icmnd_cmd_template.words[4], 1268 sizeof(uint32_t) * 8); 1269 cstat->control_requests++; 1270 } 1271 1272 if (pnode->nlp_nvme_info & NLP_NVME_NSLER) { 1273 bf_set(wqe_erp, &wqe->generic.wqe_com, 1); 1274 sqe = &((struct nvme_fc_cmd_iu *) 1275 nCmd->cmdaddr)->sqe.common; 1276 if (sqe->opcode == nvme_admin_async_event) 1277 bf_set(wqe_ffrq, &wqe->generic.wqe_com, 1); 1278 } 1279 1280 /* 1281 * Finish initializing those WQE fields that are independent 1282 * of the nvme_cmnd request_buffer 1283 */ 1284 1285 /* Word 3 */ 1286 bf_set(payload_offset_len, &wqe->fcp_icmd, 1287 (nCmd->rsplen + nCmd->cmdlen)); 1288 1289 /* Word 6 */ 1290 bf_set(wqe_ctxt_tag, &wqe->generic.wqe_com, 1291 phba->sli4_hba.rpi_ids[pnode->nlp_rpi]); 1292 bf_set(wqe_xri_tag, &wqe->generic.wqe_com, pwqeq->sli4_xritag); 1293 1294 /* Word 8 */ 1295 wqe->generic.wqe_com.abort_tag = pwqeq->iotag; 1296 1297 /* Word 9 */ 1298 bf_set(wqe_reqtag, &wqe->generic.wqe_com, pwqeq->iotag); 1299 1300 /* Word 10 */ 1301 bf_set(wqe_xchg, &wqe->fcp_iwrite.wqe_com, LPFC_NVME_XCHG); 1302 1303 /* Words 13 14 15 are for PBDE support */ 1304 1305 /* add the VMID tags as per switch response */ 1306 if (unlikely(lpfc_ncmd->cur_iocbq.cmd_flag & LPFC_IO_VMID)) { 1307 if (phba->pport->vmid_priority_tagging) { 1308 bf_set(wqe_ccpe, &wqe->fcp_iwrite.wqe_com, 1); 1309 bf_set(wqe_ccp, &wqe->fcp_iwrite.wqe_com, 1310 lpfc_ncmd->cur_iocbq.vmid_tag.cs_ctl_vmid); 1311 } else { 1312 bf_set(wqe_appid, &wqe->fcp_iwrite.wqe_com, 1); 1313 bf_set(wqe_wqes, &wqe->fcp_iwrite.wqe_com, 1); 1314 wqe->words[31] = lpfc_ncmd->cur_iocbq.vmid_tag.app_id; 1315 } 1316 } 1317 1318 pwqeq->vport = vport; 1319 return 0; 1320 } 1321 1322 1323 /** 1324 * lpfc_nvme_prep_io_dma - Issue an NVME-over-FCP IO 1325 * @vport: pointer to a host virtual N_Port data structure 1326 * @lpfc_ncmd: Pointer to lpfc scsi command 1327 * 1328 * Driver registers this routine as it io request handler. This 1329 * routine issues an fcp WQE with data from the @lpfc_nvme_fcpreq 1330 * data structure to the rport indicated in @lpfc_nvme_rport. 1331 * 1332 * Return value : 1333 * 0 - Success 1334 * TODO: What are the failure codes. 1335 **/ 1336 static int 1337 lpfc_nvme_prep_io_dma(struct lpfc_vport *vport, 1338 struct lpfc_io_buf *lpfc_ncmd) 1339 { 1340 struct lpfc_hba *phba = vport->phba; 1341 struct nvmefc_fcp_req *nCmd = lpfc_ncmd->nvmeCmd; 1342 union lpfc_wqe128 *wqe = &lpfc_ncmd->cur_iocbq.wqe; 1343 struct sli4_sge *sgl = lpfc_ncmd->dma_sgl; 1344 struct sli4_hybrid_sgl *sgl_xtra = NULL; 1345 struct scatterlist *data_sg; 1346 struct sli4_sge *first_data_sgl; 1347 struct ulp_bde64 *bde; 1348 dma_addr_t physaddr = 0; 1349 uint32_t dma_len = 0; 1350 uint32_t dma_offset = 0; 1351 int nseg, i, j; 1352 bool lsp_just_set = false; 1353 1354 /* Fix up the command and response DMA stuff. */ 1355 lpfc_nvme_adj_fcp_sgls(vport, lpfc_ncmd, nCmd); 1356 1357 /* 1358 * There are three possibilities here - use scatter-gather segment, use 1359 * the single mapping, or neither. 1360 */ 1361 if (nCmd->sg_cnt) { 1362 /* 1363 * Jump over the cmd and rsp SGEs. The fix routine 1364 * has already adjusted for this. 1365 */ 1366 sgl += 2; 1367 1368 first_data_sgl = sgl; 1369 lpfc_ncmd->seg_cnt = nCmd->sg_cnt; 1370 if (lpfc_ncmd->seg_cnt > lpfc_nvme_template.max_sgl_segments) { 1371 lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT, 1372 "6058 Too many sg segments from " 1373 "NVME Transport. Max %d, " 1374 "nvmeIO sg_cnt %d\n", 1375 phba->cfg_nvme_seg_cnt + 1, 1376 lpfc_ncmd->seg_cnt); 1377 lpfc_ncmd->seg_cnt = 0; 1378 return 1; 1379 } 1380 1381 /* 1382 * The driver established a maximum scatter-gather segment count 1383 * during probe that limits the number of sg elements in any 1384 * single nvme command. Just run through the seg_cnt and format 1385 * the sge's. 1386 */ 1387 nseg = nCmd->sg_cnt; 1388 data_sg = nCmd->first_sgl; 1389 1390 /* for tracking the segment boundaries */ 1391 j = 2; 1392 for (i = 0; i < nseg; i++) { 1393 if (data_sg == NULL) { 1394 lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT, 1395 "6059 dptr err %d, nseg %d\n", 1396 i, nseg); 1397 lpfc_ncmd->seg_cnt = 0; 1398 return 1; 1399 } 1400 1401 sgl->word2 = 0; 1402 if (nseg == 1) { 1403 bf_set(lpfc_sli4_sge_last, sgl, 1); 1404 bf_set(lpfc_sli4_sge_type, sgl, 1405 LPFC_SGE_TYPE_DATA); 1406 } else { 1407 bf_set(lpfc_sli4_sge_last, sgl, 0); 1408 1409 /* expand the segment */ 1410 if (!lsp_just_set && 1411 !((j + 1) % phba->border_sge_num) && 1412 ((nseg - 1) != i)) { 1413 /* set LSP type */ 1414 bf_set(lpfc_sli4_sge_type, sgl, 1415 LPFC_SGE_TYPE_LSP); 1416 1417 sgl_xtra = lpfc_get_sgl_per_hdwq( 1418 phba, lpfc_ncmd); 1419 1420 if (unlikely(!sgl_xtra)) { 1421 lpfc_ncmd->seg_cnt = 0; 1422 return 1; 1423 } 1424 sgl->addr_lo = cpu_to_le32(putPaddrLow( 1425 sgl_xtra->dma_phys_sgl)); 1426 sgl->addr_hi = cpu_to_le32(putPaddrHigh( 1427 sgl_xtra->dma_phys_sgl)); 1428 1429 } else { 1430 bf_set(lpfc_sli4_sge_type, sgl, 1431 LPFC_SGE_TYPE_DATA); 1432 } 1433 } 1434 1435 if (!(bf_get(lpfc_sli4_sge_type, sgl) & 1436 LPFC_SGE_TYPE_LSP)) { 1437 if ((nseg - 1) == i) 1438 bf_set(lpfc_sli4_sge_last, sgl, 1); 1439 1440 physaddr = sg_dma_address(data_sg); 1441 dma_len = sg_dma_len(data_sg); 1442 sgl->addr_lo = cpu_to_le32( 1443 putPaddrLow(physaddr)); 1444 sgl->addr_hi = cpu_to_le32( 1445 putPaddrHigh(physaddr)); 1446 1447 bf_set(lpfc_sli4_sge_offset, sgl, dma_offset); 1448 sgl->word2 = cpu_to_le32(sgl->word2); 1449 sgl->sge_len = cpu_to_le32(dma_len); 1450 1451 dma_offset += dma_len; 1452 data_sg = sg_next(data_sg); 1453 1454 sgl++; 1455 1456 lsp_just_set = false; 1457 } else { 1458 sgl->word2 = cpu_to_le32(sgl->word2); 1459 1460 sgl->sge_len = cpu_to_le32( 1461 phba->cfg_sg_dma_buf_size); 1462 1463 sgl = (struct sli4_sge *)sgl_xtra->dma_sgl; 1464 i = i - 1; 1465 1466 lsp_just_set = true; 1467 } 1468 1469 j++; 1470 } 1471 1472 /* PBDE support for first data SGE only */ 1473 if (nseg == 1 && phba->cfg_enable_pbde) { 1474 /* Words 13-15 */ 1475 bde = (struct ulp_bde64 *) 1476 &wqe->words[13]; 1477 bde->addrLow = first_data_sgl->addr_lo; 1478 bde->addrHigh = first_data_sgl->addr_hi; 1479 bde->tus.f.bdeSize = 1480 le32_to_cpu(first_data_sgl->sge_len); 1481 bde->tus.f.bdeFlags = BUFF_TYPE_BDE_64; 1482 bde->tus.w = cpu_to_le32(bde->tus.w); 1483 1484 /* Word 11 - set PBDE bit */ 1485 bf_set(wqe_pbde, &wqe->generic.wqe_com, 1); 1486 } else { 1487 memset(&wqe->words[13], 0, (sizeof(uint32_t) * 3)); 1488 /* Word 11 - PBDE bit disabled by default template */ 1489 } 1490 1491 } else { 1492 lpfc_ncmd->seg_cnt = 0; 1493 1494 /* For this clause to be valid, the payload_length 1495 * and sg_cnt must zero. 1496 */ 1497 if (nCmd->payload_length != 0) { 1498 lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT, 1499 "6063 NVME DMA Prep Err: sg_cnt %d " 1500 "payload_length x%x\n", 1501 nCmd->sg_cnt, nCmd->payload_length); 1502 return 1; 1503 } 1504 } 1505 return 0; 1506 } 1507 1508 /** 1509 * lpfc_nvme_fcp_io_submit - Issue an NVME-over-FCP IO 1510 * @pnvme_lport: Pointer to the driver's local port data 1511 * @pnvme_rport: Pointer to the rport getting the @lpfc_nvme_ereq 1512 * @hw_queue_handle: Driver-returned handle in lpfc_nvme_create_queue 1513 * @pnvme_fcreq: IO request from nvme fc to driver. 1514 * 1515 * Driver registers this routine as it io request handler. This 1516 * routine issues an fcp WQE with data from the @lpfc_nvme_fcpreq 1517 * data structure to the rport indicated in @lpfc_nvme_rport. 1518 * 1519 * Return value : 1520 * 0 - Success 1521 * TODO: What are the failure codes. 1522 **/ 1523 static int 1524 lpfc_nvme_fcp_io_submit(struct nvme_fc_local_port *pnvme_lport, 1525 struct nvme_fc_remote_port *pnvme_rport, 1526 void *hw_queue_handle, 1527 struct nvmefc_fcp_req *pnvme_fcreq) 1528 { 1529 int ret = 0; 1530 int expedite = 0; 1531 int idx, cpu; 1532 struct lpfc_nvme_lport *lport; 1533 struct lpfc_fc4_ctrl_stat *cstat; 1534 struct lpfc_vport *vport; 1535 struct lpfc_hba *phba; 1536 struct lpfc_nodelist *ndlp; 1537 struct lpfc_io_buf *lpfc_ncmd; 1538 struct lpfc_nvme_rport *rport; 1539 struct lpfc_nvme_qhandle *lpfc_queue_info; 1540 struct lpfc_nvme_fcpreq_priv *freqpriv; 1541 struct nvme_common_command *sqe; 1542 uint64_t start = 0; 1543 #if (IS_ENABLED(CONFIG_NVME_FC)) 1544 u8 *uuid = NULL; 1545 int err; 1546 enum dma_data_direction iodir; 1547 #endif 1548 1549 /* Validate pointers. LLDD fault handling with transport does 1550 * have timing races. 1551 */ 1552 lport = (struct lpfc_nvme_lport *)pnvme_lport->private; 1553 if (unlikely(!lport)) { 1554 ret = -EINVAL; 1555 goto out_fail; 1556 } 1557 1558 vport = lport->vport; 1559 1560 if (unlikely(!hw_queue_handle)) { 1561 lpfc_printf_vlog(vport, KERN_INFO, LOG_NVME_IOERR, 1562 "6117 Fail IO, NULL hw_queue_handle\n"); 1563 atomic_inc(&lport->xmt_fcp_err); 1564 ret = -EBUSY; 1565 goto out_fail; 1566 } 1567 1568 phba = vport->phba; 1569 1570 if ((unlikely(vport->load_flag & FC_UNLOADING)) || 1571 phba->hba_flag & HBA_IOQ_FLUSH) { 1572 lpfc_printf_vlog(vport, KERN_INFO, LOG_NVME_IOERR, 1573 "6124 Fail IO, Driver unload\n"); 1574 atomic_inc(&lport->xmt_fcp_err); 1575 ret = -ENODEV; 1576 goto out_fail; 1577 } 1578 1579 freqpriv = pnvme_fcreq->private; 1580 if (unlikely(!freqpriv)) { 1581 lpfc_printf_vlog(vport, KERN_INFO, LOG_NVME_IOERR, 1582 "6158 Fail IO, NULL request data\n"); 1583 atomic_inc(&lport->xmt_fcp_err); 1584 ret = -EINVAL; 1585 goto out_fail; 1586 } 1587 1588 #ifdef CONFIG_SCSI_LPFC_DEBUG_FS 1589 if (phba->ktime_on) 1590 start = ktime_get_ns(); 1591 #endif 1592 rport = (struct lpfc_nvme_rport *)pnvme_rport->private; 1593 lpfc_queue_info = (struct lpfc_nvme_qhandle *)hw_queue_handle; 1594 1595 /* 1596 * Catch race where our node has transitioned, but the 1597 * transport is still transitioning. 1598 */ 1599 ndlp = rport->ndlp; 1600 if (!ndlp) { 1601 lpfc_printf_vlog(vport, KERN_INFO, LOG_NODE | LOG_NVME_IOERR, 1602 "6053 Busy IO, ndlp not ready: rport x%px " 1603 "ndlp x%px, DID x%06x\n", 1604 rport, ndlp, pnvme_rport->port_id); 1605 atomic_inc(&lport->xmt_fcp_err); 1606 ret = -EBUSY; 1607 goto out_fail; 1608 } 1609 1610 /* The remote node has to be a mapped target or it's an error. */ 1611 if ((ndlp->nlp_type & NLP_NVME_TARGET) && 1612 (ndlp->nlp_state != NLP_STE_MAPPED_NODE)) { 1613 lpfc_printf_vlog(vport, KERN_INFO, LOG_NODE | LOG_NVME_IOERR, 1614 "6036 Fail IO, DID x%06x not ready for " 1615 "IO. State x%x, Type x%x Flg x%x\n", 1616 pnvme_rport->port_id, 1617 ndlp->nlp_state, ndlp->nlp_type, 1618 ndlp->fc4_xpt_flags); 1619 atomic_inc(&lport->xmt_fcp_bad_ndlp); 1620 ret = -EBUSY; 1621 goto out_fail; 1622 1623 } 1624 1625 /* Currently only NVME Keep alive commands should be expedited 1626 * if the driver runs out of a resource. These should only be 1627 * issued on the admin queue, qidx 0 1628 */ 1629 if (!lpfc_queue_info->qidx && !pnvme_fcreq->sg_cnt) { 1630 sqe = &((struct nvme_fc_cmd_iu *) 1631 pnvme_fcreq->cmdaddr)->sqe.common; 1632 if (sqe->opcode == nvme_admin_keep_alive) 1633 expedite = 1; 1634 } 1635 1636 /* Check if IO qualifies for CMF */ 1637 if (phba->cmf_active_mode != LPFC_CFG_OFF && 1638 pnvme_fcreq->io_dir == NVMEFC_FCP_READ && 1639 pnvme_fcreq->payload_length) { 1640 ret = lpfc_update_cmf_cmd(phba, pnvme_fcreq->payload_length); 1641 if (ret) { 1642 ret = -EBUSY; 1643 goto out_fail; 1644 } 1645 /* Get start time for IO latency */ 1646 start = ktime_get_ns(); 1647 } 1648 1649 /* The node is shared with FCP IO, make sure the IO pending count does 1650 * not exceed the programmed depth. 1651 */ 1652 if (lpfc_ndlp_check_qdepth(phba, ndlp)) { 1653 if ((atomic_read(&ndlp->cmd_pending) >= ndlp->cmd_qdepth) && 1654 !expedite) { 1655 lpfc_printf_vlog(vport, KERN_INFO, LOG_NVME_IOERR, 1656 "6174 Fail IO, ndlp qdepth exceeded: " 1657 "idx %d DID %x pend %d qdepth %d\n", 1658 lpfc_queue_info->index, ndlp->nlp_DID, 1659 atomic_read(&ndlp->cmd_pending), 1660 ndlp->cmd_qdepth); 1661 atomic_inc(&lport->xmt_fcp_qdepth); 1662 ret = -EBUSY; 1663 goto out_fail1; 1664 } 1665 } 1666 1667 /* Lookup Hardware Queue index based on fcp_io_sched module parameter */ 1668 if (phba->cfg_fcp_io_sched == LPFC_FCP_SCHED_BY_HDWQ) { 1669 idx = lpfc_queue_info->index; 1670 } else { 1671 cpu = raw_smp_processor_id(); 1672 idx = phba->sli4_hba.cpu_map[cpu].hdwq; 1673 } 1674 1675 lpfc_ncmd = lpfc_get_nvme_buf(phba, ndlp, idx, expedite); 1676 if (lpfc_ncmd == NULL) { 1677 atomic_inc(&lport->xmt_fcp_noxri); 1678 lpfc_printf_vlog(vport, KERN_INFO, LOG_NVME_IOERR, 1679 "6065 Fail IO, driver buffer pool is empty: " 1680 "idx %d DID %x\n", 1681 lpfc_queue_info->index, ndlp->nlp_DID); 1682 ret = -EBUSY; 1683 goto out_fail1; 1684 } 1685 #ifdef CONFIG_SCSI_LPFC_DEBUG_FS 1686 if (start) { 1687 lpfc_ncmd->ts_cmd_start = start; 1688 lpfc_ncmd->ts_last_cmd = phba->ktime_last_cmd; 1689 } else { 1690 lpfc_ncmd->ts_cmd_start = 0; 1691 } 1692 #endif 1693 lpfc_ncmd->rx_cmd_start = start; 1694 1695 /* 1696 * Store the data needed by the driver to issue, abort, and complete 1697 * an IO. 1698 * Do not let the IO hang out forever. There is no midlayer issuing 1699 * an abort so inform the FW of the maximum IO pending time. 1700 */ 1701 freqpriv->nvme_buf = lpfc_ncmd; 1702 lpfc_ncmd->nvmeCmd = pnvme_fcreq; 1703 lpfc_ncmd->ndlp = ndlp; 1704 lpfc_ncmd->qidx = lpfc_queue_info->qidx; 1705 1706 #if (IS_ENABLED(CONFIG_NVME_FC)) 1707 /* check the necessary and sufficient condition to support VMID */ 1708 if (lpfc_is_vmid_enabled(phba) && 1709 (ndlp->vmid_support || 1710 phba->pport->vmid_priority_tagging == 1711 LPFC_VMID_PRIO_TAG_ALL_TARGETS)) { 1712 /* is the I/O generated by a VM, get the associated virtual */ 1713 /* entity id */ 1714 uuid = nvme_fc_io_getuuid(pnvme_fcreq); 1715 1716 if (uuid) { 1717 if (pnvme_fcreq->io_dir == NVMEFC_FCP_WRITE) 1718 iodir = DMA_TO_DEVICE; 1719 else if (pnvme_fcreq->io_dir == NVMEFC_FCP_READ) 1720 iodir = DMA_FROM_DEVICE; 1721 else 1722 iodir = DMA_NONE; 1723 1724 err = lpfc_vmid_get_appid(vport, uuid, iodir, 1725 (union lpfc_vmid_io_tag *) 1726 &lpfc_ncmd->cur_iocbq.vmid_tag); 1727 if (!err) 1728 lpfc_ncmd->cur_iocbq.cmd_flag |= LPFC_IO_VMID; 1729 } 1730 } 1731 #endif 1732 1733 /* 1734 * Issue the IO on the WQ indicated by index in the hw_queue_handle. 1735 * This identfier was create in our hardware queue create callback 1736 * routine. The driver now is dependent on the IO queue steering from 1737 * the transport. We are trusting the upper NVME layers know which 1738 * index to use and that they have affinitized a CPU to this hardware 1739 * queue. A hardware queue maps to a driver MSI-X vector/EQ/CQ/WQ. 1740 */ 1741 lpfc_ncmd->cur_iocbq.hba_wqidx = idx; 1742 cstat = &phba->sli4_hba.hdwq[idx].nvme_cstat; 1743 1744 lpfc_nvme_prep_io_cmd(vport, lpfc_ncmd, ndlp, cstat); 1745 ret = lpfc_nvme_prep_io_dma(vport, lpfc_ncmd); 1746 if (ret) { 1747 lpfc_printf_vlog(vport, KERN_INFO, LOG_NVME_IOERR, 1748 "6175 Fail IO, Prep DMA: " 1749 "idx %d DID %x\n", 1750 lpfc_queue_info->index, ndlp->nlp_DID); 1751 atomic_inc(&lport->xmt_fcp_err); 1752 ret = -ENOMEM; 1753 goto out_free_nvme_buf; 1754 } 1755 1756 lpfc_nvmeio_data(phba, "NVME FCP XMIT: xri x%x idx %d to %06x\n", 1757 lpfc_ncmd->cur_iocbq.sli4_xritag, 1758 lpfc_queue_info->index, ndlp->nlp_DID); 1759 1760 ret = lpfc_sli4_issue_wqe(phba, lpfc_ncmd->hdwq, &lpfc_ncmd->cur_iocbq); 1761 if (ret) { 1762 atomic_inc(&lport->xmt_fcp_wqerr); 1763 lpfc_printf_vlog(vport, KERN_INFO, LOG_NVME_IOERR, 1764 "6113 Fail IO, Could not issue WQE err %x " 1765 "sid: x%x did: x%x oxid: x%x\n", 1766 ret, vport->fc_myDID, ndlp->nlp_DID, 1767 lpfc_ncmd->cur_iocbq.sli4_xritag); 1768 goto out_free_nvme_buf; 1769 } 1770 1771 if (phba->cfg_xri_rebalancing) 1772 lpfc_keep_pvt_pool_above_lowwm(phba, lpfc_ncmd->hdwq_no); 1773 1774 #ifdef CONFIG_SCSI_LPFC_DEBUG_FS 1775 if (lpfc_ncmd->ts_cmd_start) 1776 lpfc_ncmd->ts_cmd_wqput = ktime_get_ns(); 1777 1778 if (phba->hdwqstat_on & LPFC_CHECK_NVME_IO) { 1779 cpu = raw_smp_processor_id(); 1780 this_cpu_inc(phba->sli4_hba.c_stat->xmt_io); 1781 lpfc_ncmd->cpu = cpu; 1782 if (idx != cpu) 1783 lpfc_printf_vlog(vport, 1784 KERN_INFO, LOG_NVME_IOERR, 1785 "6702 CPU Check cmd: " 1786 "cpu %d wq %d\n", 1787 lpfc_ncmd->cpu, 1788 lpfc_queue_info->index); 1789 } 1790 #endif 1791 return 0; 1792 1793 out_free_nvme_buf: 1794 if (lpfc_ncmd->nvmeCmd->sg_cnt) { 1795 if (lpfc_ncmd->nvmeCmd->io_dir == NVMEFC_FCP_WRITE) 1796 cstat->output_requests--; 1797 else 1798 cstat->input_requests--; 1799 } else 1800 cstat->control_requests--; 1801 lpfc_release_nvme_buf(phba, lpfc_ncmd); 1802 out_fail1: 1803 lpfc_update_cmf_cmpl(phba, LPFC_CGN_NOT_SENT, 1804 pnvme_fcreq->payload_length, NULL); 1805 out_fail: 1806 return ret; 1807 } 1808 1809 /** 1810 * lpfc_nvme_abort_fcreq_cmpl - Complete an NVME FCP abort request. 1811 * @phba: Pointer to HBA context object 1812 * @cmdiocb: Pointer to command iocb object. 1813 * @rspiocb: Pointer to response iocb object. 1814 * 1815 * This is the callback function for any NVME FCP IO that was aborted. 1816 * 1817 * Return value: 1818 * None 1819 **/ 1820 void 1821 lpfc_nvme_abort_fcreq_cmpl(struct lpfc_hba *phba, struct lpfc_iocbq *cmdiocb, 1822 struct lpfc_iocbq *rspiocb) 1823 { 1824 struct lpfc_wcqe_complete *abts_cmpl = &rspiocb->wcqe_cmpl; 1825 1826 lpfc_printf_log(phba, KERN_INFO, LOG_NVME, 1827 "6145 ABORT_XRI_CN completing on rpi x%x " 1828 "original iotag x%x, abort cmd iotag x%x " 1829 "req_tag x%x, status x%x, hwstatus x%x\n", 1830 bf_get(wqe_ctxt_tag, &cmdiocb->wqe.generic.wqe_com), 1831 get_job_abtsiotag(phba, cmdiocb), cmdiocb->iotag, 1832 bf_get(lpfc_wcqe_c_request_tag, abts_cmpl), 1833 bf_get(lpfc_wcqe_c_status, abts_cmpl), 1834 bf_get(lpfc_wcqe_c_hw_status, abts_cmpl)); 1835 lpfc_sli_release_iocbq(phba, cmdiocb); 1836 } 1837 1838 /** 1839 * lpfc_nvme_fcp_abort - Issue an NVME-over-FCP ABTS 1840 * @pnvme_lport: Pointer to the driver's local port data 1841 * @pnvme_rport: Pointer to the rport getting the @lpfc_nvme_ereq 1842 * @hw_queue_handle: Driver-returned handle in lpfc_nvme_create_queue 1843 * @pnvme_fcreq: IO request from nvme fc to driver. 1844 * 1845 * Driver registers this routine as its nvme request io abort handler. This 1846 * routine issues an fcp Abort WQE with data from the @lpfc_nvme_fcpreq 1847 * data structure to the rport indicated in @lpfc_nvme_rport. This routine 1848 * is executed asynchronously - one the target is validated as "MAPPED" and 1849 * ready for IO, the driver issues the abort request and returns. 1850 * 1851 * Return value: 1852 * None 1853 **/ 1854 static void 1855 lpfc_nvme_fcp_abort(struct nvme_fc_local_port *pnvme_lport, 1856 struct nvme_fc_remote_port *pnvme_rport, 1857 void *hw_queue_handle, 1858 struct nvmefc_fcp_req *pnvme_fcreq) 1859 { 1860 struct lpfc_nvme_lport *lport; 1861 struct lpfc_vport *vport; 1862 struct lpfc_hba *phba; 1863 struct lpfc_io_buf *lpfc_nbuf; 1864 struct lpfc_iocbq *nvmereq_wqe; 1865 struct lpfc_nvme_fcpreq_priv *freqpriv; 1866 unsigned long flags; 1867 int ret_val; 1868 1869 /* Validate pointers. LLDD fault handling with transport does 1870 * have timing races. 1871 */ 1872 lport = (struct lpfc_nvme_lport *)pnvme_lport->private; 1873 if (unlikely(!lport)) 1874 return; 1875 1876 vport = lport->vport; 1877 1878 if (unlikely(!hw_queue_handle)) { 1879 lpfc_printf_vlog(vport, KERN_INFO, LOG_NVME_ABTS, 1880 "6129 Fail Abort, HW Queue Handle NULL.\n"); 1881 return; 1882 } 1883 1884 phba = vport->phba; 1885 freqpriv = pnvme_fcreq->private; 1886 1887 if (unlikely(!freqpriv)) 1888 return; 1889 if (vport->load_flag & FC_UNLOADING) 1890 return; 1891 1892 /* Announce entry to new IO submit field. */ 1893 lpfc_printf_vlog(vport, KERN_INFO, LOG_NVME_ABTS, 1894 "6002 Abort Request to rport DID x%06x " 1895 "for nvme_fc_req x%px\n", 1896 pnvme_rport->port_id, 1897 pnvme_fcreq); 1898 1899 lpfc_nbuf = freqpriv->nvme_buf; 1900 if (!lpfc_nbuf) { 1901 lpfc_printf_vlog(vport, KERN_ERR, LOG_TRACE_EVENT, 1902 "6140 NVME IO req has no matching lpfc nvme " 1903 "io buffer. Skipping abort req.\n"); 1904 return; 1905 } else if (!lpfc_nbuf->nvmeCmd) { 1906 lpfc_printf_vlog(vport, KERN_ERR, LOG_TRACE_EVENT, 1907 "6141 lpfc NVME IO req has no nvme_fcreq " 1908 "io buffer. Skipping abort req.\n"); 1909 return; 1910 } 1911 1912 /* Guard against IO completion being called at same time */ 1913 spin_lock_irqsave(&lpfc_nbuf->buf_lock, flags); 1914 1915 /* If the hba is getting reset, this flag is set. It is 1916 * cleared when the reset is complete and rings reestablished. 1917 */ 1918 spin_lock(&phba->hbalock); 1919 /* driver queued commands are in process of being flushed */ 1920 if (phba->hba_flag & HBA_IOQ_FLUSH) { 1921 spin_unlock(&phba->hbalock); 1922 spin_unlock_irqrestore(&lpfc_nbuf->buf_lock, flags); 1923 lpfc_printf_vlog(vport, KERN_ERR, LOG_TRACE_EVENT, 1924 "6139 Driver in reset cleanup - flushing " 1925 "NVME Req now. hba_flag x%x\n", 1926 phba->hba_flag); 1927 return; 1928 } 1929 1930 nvmereq_wqe = &lpfc_nbuf->cur_iocbq; 1931 1932 /* 1933 * The lpfc_nbuf and the mapped nvme_fcreq in the driver's 1934 * state must match the nvme_fcreq passed by the nvme 1935 * transport. If they don't match, it is likely the driver 1936 * has already completed the NVME IO and the nvme transport 1937 * has not seen it yet. 1938 */ 1939 if (lpfc_nbuf->nvmeCmd != pnvme_fcreq) { 1940 lpfc_printf_vlog(vport, KERN_ERR, LOG_TRACE_EVENT, 1941 "6143 NVME req mismatch: " 1942 "lpfc_nbuf x%px nvmeCmd x%px, " 1943 "pnvme_fcreq x%px. Skipping Abort xri x%x\n", 1944 lpfc_nbuf, lpfc_nbuf->nvmeCmd, 1945 pnvme_fcreq, nvmereq_wqe->sli4_xritag); 1946 goto out_unlock; 1947 } 1948 1949 /* Don't abort IOs no longer on the pending queue. */ 1950 if (!(nvmereq_wqe->cmd_flag & LPFC_IO_ON_TXCMPLQ)) { 1951 lpfc_printf_vlog(vport, KERN_ERR, LOG_TRACE_EVENT, 1952 "6142 NVME IO req x%px not queued - skipping " 1953 "abort req xri x%x\n", 1954 pnvme_fcreq, nvmereq_wqe->sli4_xritag); 1955 goto out_unlock; 1956 } 1957 1958 atomic_inc(&lport->xmt_fcp_abort); 1959 lpfc_nvmeio_data(phba, "NVME FCP ABORT: xri x%x idx %d to %06x\n", 1960 nvmereq_wqe->sli4_xritag, 1961 nvmereq_wqe->hba_wqidx, pnvme_rport->port_id); 1962 1963 /* Outstanding abort is in progress */ 1964 if (nvmereq_wqe->cmd_flag & LPFC_DRIVER_ABORTED) { 1965 lpfc_printf_vlog(vport, KERN_ERR, LOG_TRACE_EVENT, 1966 "6144 Outstanding NVME I/O Abort Request " 1967 "still pending on nvme_fcreq x%px, " 1968 "lpfc_ncmd x%px xri x%x\n", 1969 pnvme_fcreq, lpfc_nbuf, 1970 nvmereq_wqe->sli4_xritag); 1971 goto out_unlock; 1972 } 1973 1974 ret_val = lpfc_sli4_issue_abort_iotag(phba, nvmereq_wqe, 1975 lpfc_nvme_abort_fcreq_cmpl); 1976 1977 spin_unlock(&phba->hbalock); 1978 spin_unlock_irqrestore(&lpfc_nbuf->buf_lock, flags); 1979 1980 /* Make sure HBA is alive */ 1981 lpfc_issue_hb_tmo(phba); 1982 1983 if (ret_val != WQE_SUCCESS) { 1984 lpfc_printf_vlog(vport, KERN_ERR, LOG_TRACE_EVENT, 1985 "6137 Failed abts issue_wqe with status x%x " 1986 "for nvme_fcreq x%px.\n", 1987 ret_val, pnvme_fcreq); 1988 return; 1989 } 1990 1991 lpfc_printf_vlog(vport, KERN_INFO, LOG_NVME_ABTS, 1992 "6138 Transport Abort NVME Request Issued for " 1993 "ox_id x%x\n", 1994 nvmereq_wqe->sli4_xritag); 1995 return; 1996 1997 out_unlock: 1998 spin_unlock(&phba->hbalock); 1999 spin_unlock_irqrestore(&lpfc_nbuf->buf_lock, flags); 2000 return; 2001 } 2002 2003 /* Declare and initialization an instance of the FC NVME template. */ 2004 static struct nvme_fc_port_template lpfc_nvme_template = { 2005 /* initiator-based functions */ 2006 .localport_delete = lpfc_nvme_localport_delete, 2007 .remoteport_delete = lpfc_nvme_remoteport_delete, 2008 .create_queue = lpfc_nvme_create_queue, 2009 .delete_queue = lpfc_nvme_delete_queue, 2010 .ls_req = lpfc_nvme_ls_req, 2011 .fcp_io = lpfc_nvme_fcp_io_submit, 2012 .ls_abort = lpfc_nvme_ls_abort, 2013 .fcp_abort = lpfc_nvme_fcp_abort, 2014 .xmt_ls_rsp = lpfc_nvme_xmt_ls_rsp, 2015 2016 .max_hw_queues = 1, 2017 .max_sgl_segments = LPFC_NVME_DEFAULT_SEGS, 2018 .max_dif_sgl_segments = LPFC_NVME_DEFAULT_SEGS, 2019 .dma_boundary = 0xFFFFFFFF, 2020 2021 /* Sizes of additional private data for data structures. 2022 * No use for the last two sizes at this time. 2023 */ 2024 .local_priv_sz = sizeof(struct lpfc_nvme_lport), 2025 .remote_priv_sz = sizeof(struct lpfc_nvme_rport), 2026 .lsrqst_priv_sz = 0, 2027 .fcprqst_priv_sz = sizeof(struct lpfc_nvme_fcpreq_priv), 2028 }; 2029 2030 /* 2031 * lpfc_get_nvme_buf - Get a nvme buffer from io_buf_list of the HBA 2032 * 2033 * This routine removes a nvme buffer from head of @hdwq io_buf_list 2034 * and returns to caller. 2035 * 2036 * Return codes: 2037 * NULL - Error 2038 * Pointer to lpfc_nvme_buf - Success 2039 **/ 2040 static struct lpfc_io_buf * 2041 lpfc_get_nvme_buf(struct lpfc_hba *phba, struct lpfc_nodelist *ndlp, 2042 int idx, int expedite) 2043 { 2044 struct lpfc_io_buf *lpfc_ncmd; 2045 struct lpfc_sli4_hdw_queue *qp; 2046 struct sli4_sge *sgl; 2047 struct lpfc_iocbq *pwqeq; 2048 union lpfc_wqe128 *wqe; 2049 2050 lpfc_ncmd = lpfc_get_io_buf(phba, NULL, idx, expedite); 2051 2052 if (lpfc_ncmd) { 2053 pwqeq = &(lpfc_ncmd->cur_iocbq); 2054 wqe = &pwqeq->wqe; 2055 2056 /* Setup key fields in buffer that may have been changed 2057 * if other protocols used this buffer. 2058 */ 2059 pwqeq->cmd_flag = LPFC_IO_NVME; 2060 pwqeq->cmd_cmpl = lpfc_nvme_io_cmd_cmpl; 2061 lpfc_ncmd->start_time = jiffies; 2062 lpfc_ncmd->flags = 0; 2063 2064 /* Rsp SGE will be filled in when we rcv an IO 2065 * from the NVME Layer to be sent. 2066 * The cmd is going to be embedded so we need a SKIP SGE. 2067 */ 2068 sgl = lpfc_ncmd->dma_sgl; 2069 bf_set(lpfc_sli4_sge_type, sgl, LPFC_SGE_TYPE_SKIP); 2070 bf_set(lpfc_sli4_sge_last, sgl, 0); 2071 sgl->word2 = cpu_to_le32(sgl->word2); 2072 /* Fill in word 3 / sgl_len during cmd submission */ 2073 2074 /* Initialize 64 bytes only */ 2075 memset(wqe, 0, sizeof(union lpfc_wqe)); 2076 2077 if (lpfc_ndlp_check_qdepth(phba, ndlp)) { 2078 atomic_inc(&ndlp->cmd_pending); 2079 lpfc_ncmd->flags |= LPFC_SBUF_BUMP_QDEPTH; 2080 } 2081 2082 } else { 2083 qp = &phba->sli4_hba.hdwq[idx]; 2084 qp->empty_io_bufs++; 2085 } 2086 2087 return lpfc_ncmd; 2088 } 2089 2090 /** 2091 * lpfc_release_nvme_buf: Return a nvme buffer back to hba nvme buf list. 2092 * @phba: The Hba for which this call is being executed. 2093 * @lpfc_ncmd: The nvme buffer which is being released. 2094 * 2095 * This routine releases @lpfc_ncmd nvme buffer by adding it to tail of @phba 2096 * lpfc_io_buf_list list. For SLI4 XRI's are tied to the nvme buffer 2097 * and cannot be reused for at least RA_TOV amount of time if it was 2098 * aborted. 2099 **/ 2100 static void 2101 lpfc_release_nvme_buf(struct lpfc_hba *phba, struct lpfc_io_buf *lpfc_ncmd) 2102 { 2103 struct lpfc_sli4_hdw_queue *qp; 2104 unsigned long iflag = 0; 2105 2106 if ((lpfc_ncmd->flags & LPFC_SBUF_BUMP_QDEPTH) && lpfc_ncmd->ndlp) 2107 atomic_dec(&lpfc_ncmd->ndlp->cmd_pending); 2108 2109 lpfc_ncmd->ndlp = NULL; 2110 lpfc_ncmd->flags &= ~LPFC_SBUF_BUMP_QDEPTH; 2111 2112 qp = lpfc_ncmd->hdwq; 2113 if (unlikely(lpfc_ncmd->flags & LPFC_SBUF_XBUSY)) { 2114 lpfc_printf_log(phba, KERN_INFO, LOG_NVME_ABTS, 2115 "6310 XB release deferred for " 2116 "ox_id x%x on reqtag x%x\n", 2117 lpfc_ncmd->cur_iocbq.sli4_xritag, 2118 lpfc_ncmd->cur_iocbq.iotag); 2119 2120 spin_lock_irqsave(&qp->abts_io_buf_list_lock, iflag); 2121 list_add_tail(&lpfc_ncmd->list, 2122 &qp->lpfc_abts_io_buf_list); 2123 qp->abts_nvme_io_bufs++; 2124 spin_unlock_irqrestore(&qp->abts_io_buf_list_lock, iflag); 2125 } else 2126 lpfc_release_io_buf(phba, (struct lpfc_io_buf *)lpfc_ncmd, qp); 2127 } 2128 2129 /** 2130 * lpfc_nvme_create_localport - Create/Bind an nvme localport instance. 2131 * @vport: the lpfc_vport instance requesting a localport. 2132 * 2133 * This routine is invoked to create an nvme localport instance to bind 2134 * to the nvme_fc_transport. It is called once during driver load 2135 * like lpfc_create_shost after all other services are initialized. 2136 * It requires a vport, vpi, and wwns at call time. Other localport 2137 * parameters are modified as the driver's FCID and the Fabric WWN 2138 * are established. 2139 * 2140 * Return codes 2141 * 0 - successful 2142 * -ENOMEM - no heap memory available 2143 * other values - from nvme registration upcall 2144 **/ 2145 int 2146 lpfc_nvme_create_localport(struct lpfc_vport *vport) 2147 { 2148 int ret = 0; 2149 struct lpfc_hba *phba = vport->phba; 2150 struct nvme_fc_port_info nfcp_info; 2151 struct nvme_fc_local_port *localport; 2152 struct lpfc_nvme_lport *lport; 2153 2154 /* Initialize this localport instance. The vport wwn usage ensures 2155 * that NPIV is accounted for. 2156 */ 2157 memset(&nfcp_info, 0, sizeof(struct nvme_fc_port_info)); 2158 nfcp_info.port_role = FC_PORT_ROLE_NVME_INITIATOR; 2159 nfcp_info.node_name = wwn_to_u64(vport->fc_nodename.u.wwn); 2160 nfcp_info.port_name = wwn_to_u64(vport->fc_portname.u.wwn); 2161 2162 /* We need to tell the transport layer + 1 because it takes page 2163 * alignment into account. When space for the SGL is allocated we 2164 * allocate + 3, one for cmd, one for rsp and one for this alignment 2165 */ 2166 lpfc_nvme_template.max_sgl_segments = phba->cfg_nvme_seg_cnt + 1; 2167 2168 /* Advertise how many hw queues we support based on cfg_hdw_queue, 2169 * which will not exceed cpu count. 2170 */ 2171 lpfc_nvme_template.max_hw_queues = phba->cfg_hdw_queue; 2172 2173 if (!IS_ENABLED(CONFIG_NVME_FC)) 2174 return ret; 2175 2176 /* localport is allocated from the stack, but the registration 2177 * call allocates heap memory as well as the private area. 2178 */ 2179 2180 ret = nvme_fc_register_localport(&nfcp_info, &lpfc_nvme_template, 2181 &vport->phba->pcidev->dev, &localport); 2182 if (!ret) { 2183 lpfc_printf_vlog(vport, KERN_INFO, LOG_NVME | LOG_NVME_DISC, 2184 "6005 Successfully registered local " 2185 "NVME port num %d, localP x%px, private " 2186 "x%px, sg_seg %d\n", 2187 localport->port_num, localport, 2188 localport->private, 2189 lpfc_nvme_template.max_sgl_segments); 2190 2191 /* Private is our lport size declared in the template. */ 2192 lport = (struct lpfc_nvme_lport *)localport->private; 2193 vport->localport = localport; 2194 lport->vport = vport; 2195 vport->nvmei_support = 1; 2196 2197 atomic_set(&lport->xmt_fcp_noxri, 0); 2198 atomic_set(&lport->xmt_fcp_bad_ndlp, 0); 2199 atomic_set(&lport->xmt_fcp_qdepth, 0); 2200 atomic_set(&lport->xmt_fcp_err, 0); 2201 atomic_set(&lport->xmt_fcp_wqerr, 0); 2202 atomic_set(&lport->xmt_fcp_abort, 0); 2203 atomic_set(&lport->xmt_ls_abort, 0); 2204 atomic_set(&lport->xmt_ls_err, 0); 2205 atomic_set(&lport->cmpl_fcp_xb, 0); 2206 atomic_set(&lport->cmpl_fcp_err, 0); 2207 atomic_set(&lport->cmpl_ls_xb, 0); 2208 atomic_set(&lport->cmpl_ls_err, 0); 2209 2210 atomic_set(&lport->fc4NvmeLsRequests, 0); 2211 atomic_set(&lport->fc4NvmeLsCmpls, 0); 2212 } 2213 2214 return ret; 2215 } 2216 2217 #if (IS_ENABLED(CONFIG_NVME_FC)) 2218 /* lpfc_nvme_lport_unreg_wait - Wait for the host to complete an lport unreg. 2219 * 2220 * The driver has to wait for the host nvme transport to callback 2221 * indicating the localport has successfully unregistered all 2222 * resources. Since this is an uninterruptible wait, loop every ten 2223 * seconds and print a message indicating no progress. 2224 * 2225 * An uninterruptible wait is used because of the risk of transport-to- 2226 * driver state mismatch. 2227 */ 2228 static void 2229 lpfc_nvme_lport_unreg_wait(struct lpfc_vport *vport, 2230 struct lpfc_nvme_lport *lport, 2231 struct completion *lport_unreg_cmp) 2232 { 2233 u32 wait_tmo; 2234 int ret, i, pending = 0; 2235 struct lpfc_sli_ring *pring; 2236 struct lpfc_hba *phba = vport->phba; 2237 struct lpfc_sli4_hdw_queue *qp; 2238 int abts_scsi, abts_nvme; 2239 2240 /* Host transport has to clean up and confirm requiring an indefinite 2241 * wait. Print a message if a 10 second wait expires and renew the 2242 * wait. This is unexpected. 2243 */ 2244 wait_tmo = msecs_to_jiffies(LPFC_NVME_WAIT_TMO * 1000); 2245 while (true) { 2246 ret = wait_for_completion_timeout(lport_unreg_cmp, wait_tmo); 2247 if (unlikely(!ret)) { 2248 pending = 0; 2249 abts_scsi = 0; 2250 abts_nvme = 0; 2251 for (i = 0; i < phba->cfg_hdw_queue; i++) { 2252 qp = &phba->sli4_hba.hdwq[i]; 2253 if (!vport->localport || !qp || !qp->io_wq) 2254 return; 2255 2256 pring = qp->io_wq->pring; 2257 if (!pring) 2258 continue; 2259 pending += pring->txcmplq_cnt; 2260 abts_scsi += qp->abts_scsi_io_bufs; 2261 abts_nvme += qp->abts_nvme_io_bufs; 2262 } 2263 if (!vport->localport || 2264 test_bit(HBA_PCI_ERR, &vport->phba->bit_flags) || 2265 phba->link_state == LPFC_HBA_ERROR || 2266 vport->load_flag & FC_UNLOADING) 2267 return; 2268 2269 lpfc_printf_vlog(vport, KERN_ERR, LOG_TRACE_EVENT, 2270 "6176 Lport x%px Localport x%px wait " 2271 "timed out. Pending %d [%d:%d]. " 2272 "Renewing.\n", 2273 lport, vport->localport, pending, 2274 abts_scsi, abts_nvme); 2275 continue; 2276 } 2277 break; 2278 } 2279 lpfc_printf_vlog(vport, KERN_INFO, LOG_NVME_IOERR, 2280 "6177 Lport x%px Localport x%px Complete Success\n", 2281 lport, vport->localport); 2282 } 2283 #endif 2284 2285 /** 2286 * lpfc_nvme_destroy_localport - Destroy lpfc_nvme bound to nvme transport. 2287 * @vport: pointer to a host virtual N_Port data structure 2288 * 2289 * This routine is invoked to destroy all lports bound to the phba. 2290 * The lport memory was allocated by the nvme fc transport and is 2291 * released there. This routine ensures all rports bound to the 2292 * lport have been disconnected. 2293 * 2294 **/ 2295 void 2296 lpfc_nvme_destroy_localport(struct lpfc_vport *vport) 2297 { 2298 #if (IS_ENABLED(CONFIG_NVME_FC)) 2299 struct nvme_fc_local_port *localport; 2300 struct lpfc_nvme_lport *lport; 2301 int ret; 2302 DECLARE_COMPLETION_ONSTACK(lport_unreg_cmp); 2303 2304 if (vport->nvmei_support == 0) 2305 return; 2306 2307 localport = vport->localport; 2308 if (!localport) 2309 return; 2310 lport = (struct lpfc_nvme_lport *)localport->private; 2311 2312 lpfc_printf_vlog(vport, KERN_INFO, LOG_NVME, 2313 "6011 Destroying NVME localport x%px\n", 2314 localport); 2315 2316 /* lport's rport list is clear. Unregister 2317 * lport and release resources. 2318 */ 2319 lport->lport_unreg_cmp = &lport_unreg_cmp; 2320 ret = nvme_fc_unregister_localport(localport); 2321 2322 /* Wait for completion. This either blocks 2323 * indefinitely or succeeds 2324 */ 2325 lpfc_nvme_lport_unreg_wait(vport, lport, &lport_unreg_cmp); 2326 vport->localport = NULL; 2327 2328 /* Regardless of the unregister upcall response, clear 2329 * nvmei_support. All rports are unregistered and the 2330 * driver will clean up. 2331 */ 2332 vport->nvmei_support = 0; 2333 if (ret == 0) { 2334 lpfc_printf_vlog(vport, 2335 KERN_INFO, LOG_NVME_DISC, 2336 "6009 Unregistered lport Success\n"); 2337 } else { 2338 lpfc_printf_vlog(vport, 2339 KERN_INFO, LOG_NVME_DISC, 2340 "6010 Unregistered lport " 2341 "Failed, status x%x\n", 2342 ret); 2343 } 2344 #endif 2345 } 2346 2347 void 2348 lpfc_nvme_update_localport(struct lpfc_vport *vport) 2349 { 2350 #if (IS_ENABLED(CONFIG_NVME_FC)) 2351 struct nvme_fc_local_port *localport; 2352 struct lpfc_nvme_lport *lport; 2353 2354 localport = vport->localport; 2355 if (!localport) { 2356 lpfc_printf_vlog(vport, KERN_WARNING, LOG_NVME, 2357 "6710 Update NVME fail. No localport\n"); 2358 return; 2359 } 2360 lport = (struct lpfc_nvme_lport *)localport->private; 2361 if (!lport) { 2362 lpfc_printf_vlog(vport, KERN_WARNING, LOG_NVME, 2363 "6171 Update NVME fail. localP x%px, No lport\n", 2364 localport); 2365 return; 2366 } 2367 lpfc_printf_vlog(vport, KERN_INFO, LOG_NVME, 2368 "6012 Update NVME lport x%px did x%x\n", 2369 localport, vport->fc_myDID); 2370 2371 localport->port_id = vport->fc_myDID; 2372 if (localport->port_id == 0) 2373 localport->port_role = FC_PORT_ROLE_NVME_DISCOVERY; 2374 else 2375 localport->port_role = FC_PORT_ROLE_NVME_INITIATOR; 2376 2377 lpfc_printf_vlog(vport, KERN_INFO, LOG_NVME_DISC, 2378 "6030 bound lport x%px to DID x%06x\n", 2379 lport, localport->port_id); 2380 #endif 2381 } 2382 2383 int 2384 lpfc_nvme_register_port(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp) 2385 { 2386 #if (IS_ENABLED(CONFIG_NVME_FC)) 2387 int ret = 0; 2388 struct nvme_fc_local_port *localport; 2389 struct lpfc_nvme_lport *lport; 2390 struct lpfc_nvme_rport *rport; 2391 struct lpfc_nvme_rport *oldrport; 2392 struct nvme_fc_remote_port *remote_port; 2393 struct nvme_fc_port_info rpinfo; 2394 struct lpfc_nodelist *prev_ndlp = NULL; 2395 struct fc_rport *srport = ndlp->rport; 2396 2397 lpfc_printf_vlog(ndlp->vport, KERN_INFO, LOG_NVME_DISC, 2398 "6006 Register NVME PORT. DID x%06x nlptype x%x\n", 2399 ndlp->nlp_DID, ndlp->nlp_type); 2400 2401 localport = vport->localport; 2402 if (!localport) 2403 return 0; 2404 2405 lport = (struct lpfc_nvme_lport *)localport->private; 2406 2407 /* NVME rports are not preserved across devloss. 2408 * Just register this instance. Note, rpinfo->dev_loss_tmo 2409 * is left 0 to indicate accept transport defaults. The 2410 * driver communicates port role capabilities consistent 2411 * with the PRLI response data. 2412 */ 2413 memset(&rpinfo, 0, sizeof(struct nvme_fc_port_info)); 2414 rpinfo.port_id = ndlp->nlp_DID; 2415 if (ndlp->nlp_type & NLP_NVME_TARGET) 2416 rpinfo.port_role |= FC_PORT_ROLE_NVME_TARGET; 2417 if (ndlp->nlp_type & NLP_NVME_INITIATOR) 2418 rpinfo.port_role |= FC_PORT_ROLE_NVME_INITIATOR; 2419 2420 if (ndlp->nlp_type & NLP_NVME_DISCOVERY) 2421 rpinfo.port_role |= FC_PORT_ROLE_NVME_DISCOVERY; 2422 2423 rpinfo.port_name = wwn_to_u64(ndlp->nlp_portname.u.wwn); 2424 rpinfo.node_name = wwn_to_u64(ndlp->nlp_nodename.u.wwn); 2425 if (srport) 2426 rpinfo.dev_loss_tmo = srport->dev_loss_tmo; 2427 else 2428 rpinfo.dev_loss_tmo = vport->cfg_devloss_tmo; 2429 2430 spin_lock_irq(&ndlp->lock); 2431 2432 /* If an oldrport exists, so does the ndlp reference. If not 2433 * a new reference is needed because either the node has never 2434 * been registered or it's been unregistered and getting deleted. 2435 */ 2436 oldrport = lpfc_ndlp_get_nrport(ndlp); 2437 if (oldrport) { 2438 prev_ndlp = oldrport->ndlp; 2439 spin_unlock_irq(&ndlp->lock); 2440 } else { 2441 spin_unlock_irq(&ndlp->lock); 2442 if (!lpfc_nlp_get(ndlp)) { 2443 dev_warn(&vport->phba->pcidev->dev, 2444 "Warning - No node ref - exit register\n"); 2445 return 0; 2446 } 2447 } 2448 2449 ret = nvme_fc_register_remoteport(localport, &rpinfo, &remote_port); 2450 if (!ret) { 2451 /* If the ndlp already has an nrport, this is just 2452 * a resume of the existing rport. Else this is a 2453 * new rport. 2454 */ 2455 /* Guard against an unregister/reregister 2456 * race that leaves the WAIT flag set. 2457 */ 2458 spin_lock_irq(&ndlp->lock); 2459 ndlp->fc4_xpt_flags &= ~NVME_XPT_UNREG_WAIT; 2460 ndlp->fc4_xpt_flags |= NVME_XPT_REGD; 2461 spin_unlock_irq(&ndlp->lock); 2462 rport = remote_port->private; 2463 if (oldrport) { 2464 2465 /* Sever the ndlp<->rport association 2466 * before dropping the ndlp ref from 2467 * register. 2468 */ 2469 spin_lock_irq(&ndlp->lock); 2470 ndlp->nrport = NULL; 2471 ndlp->fc4_xpt_flags &= ~NVME_XPT_UNREG_WAIT; 2472 spin_unlock_irq(&ndlp->lock); 2473 rport->ndlp = NULL; 2474 rport->remoteport = NULL; 2475 2476 /* Reference only removed if previous NDLP is no longer 2477 * active. It might be just a swap and removing the 2478 * reference would cause a premature cleanup. 2479 */ 2480 if (prev_ndlp && prev_ndlp != ndlp) { 2481 if (!prev_ndlp->nrport) 2482 lpfc_nlp_put(prev_ndlp); 2483 } 2484 } 2485 2486 /* Clean bind the rport to the ndlp. */ 2487 rport->remoteport = remote_port; 2488 rport->lport = lport; 2489 rport->ndlp = ndlp; 2490 spin_lock_irq(&ndlp->lock); 2491 ndlp->nrport = rport; 2492 spin_unlock_irq(&ndlp->lock); 2493 lpfc_printf_vlog(vport, KERN_INFO, 2494 LOG_NVME_DISC | LOG_NODE, 2495 "6022 Bind lport x%px to remoteport x%px " 2496 "rport x%px WWNN 0x%llx, " 2497 "Rport WWPN 0x%llx DID " 2498 "x%06x Role x%x, ndlp %p prev_ndlp x%px\n", 2499 lport, remote_port, rport, 2500 rpinfo.node_name, rpinfo.port_name, 2501 rpinfo.port_id, rpinfo.port_role, 2502 ndlp, prev_ndlp); 2503 } else { 2504 lpfc_printf_vlog(vport, KERN_ERR, 2505 LOG_TRACE_EVENT, 2506 "6031 RemotePort Registration failed " 2507 "err: %d, DID x%06x ref %u\n", 2508 ret, ndlp->nlp_DID, kref_read(&ndlp->kref)); 2509 lpfc_nlp_put(ndlp); 2510 } 2511 2512 return ret; 2513 #else 2514 return 0; 2515 #endif 2516 } 2517 2518 /* 2519 * lpfc_nvme_rescan_port - Check to see if we should rescan this remoteport 2520 * 2521 * If the ndlp represents an NVME Target, that we are logged into, 2522 * ping the NVME FC Transport layer to initiate a device rescan 2523 * on this remote NPort. 2524 */ 2525 void 2526 lpfc_nvme_rescan_port(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp) 2527 { 2528 #if (IS_ENABLED(CONFIG_NVME_FC)) 2529 struct lpfc_nvme_rport *nrport; 2530 struct nvme_fc_remote_port *remoteport = NULL; 2531 2532 spin_lock_irq(&ndlp->lock); 2533 nrport = lpfc_ndlp_get_nrport(ndlp); 2534 if (nrport) 2535 remoteport = nrport->remoteport; 2536 spin_unlock_irq(&ndlp->lock); 2537 2538 lpfc_printf_vlog(vport, KERN_INFO, LOG_NVME_DISC, 2539 "6170 Rescan NPort DID x%06x type x%x " 2540 "state x%x nrport x%px remoteport x%px\n", 2541 ndlp->nlp_DID, ndlp->nlp_type, ndlp->nlp_state, 2542 nrport, remoteport); 2543 2544 if (!nrport || !remoteport) 2545 goto rescan_exit; 2546 2547 /* Rescan an NVME target in MAPPED state with DISCOVERY role set */ 2548 if (remoteport->port_role & FC_PORT_ROLE_NVME_DISCOVERY && 2549 ndlp->nlp_state == NLP_STE_MAPPED_NODE) { 2550 nvme_fc_rescan_remoteport(remoteport); 2551 2552 lpfc_printf_vlog(vport, KERN_INFO, LOG_NVME_DISC, 2553 "6172 NVME rescanned DID x%06x " 2554 "port_state x%x\n", 2555 ndlp->nlp_DID, remoteport->port_state); 2556 } 2557 return; 2558 rescan_exit: 2559 lpfc_printf_vlog(vport, KERN_INFO, LOG_NVME_DISC, 2560 "6169 Skip NVME Rport Rescan, NVME remoteport " 2561 "unregistered\n"); 2562 #endif 2563 } 2564 2565 /* lpfc_nvme_unregister_port - unbind the DID and port_role from this rport. 2566 * 2567 * There is no notion of Devloss or rport recovery from the current 2568 * nvme_transport perspective. Loss of an rport just means IO cannot 2569 * be sent and recovery is completely up to the initator. 2570 * For now, the driver just unbinds the DID and port_role so that 2571 * no further IO can be issued. 2572 */ 2573 void 2574 lpfc_nvme_unregister_port(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp) 2575 { 2576 #if (IS_ENABLED(CONFIG_NVME_FC)) 2577 int ret; 2578 struct nvme_fc_local_port *localport; 2579 struct lpfc_nvme_lport *lport; 2580 struct lpfc_nvme_rport *rport; 2581 struct nvme_fc_remote_port *remoteport = NULL; 2582 2583 localport = vport->localport; 2584 2585 /* This is fundamental error. The localport is always 2586 * available until driver unload. Just exit. 2587 */ 2588 if (!localport) 2589 return; 2590 2591 lport = (struct lpfc_nvme_lport *)localport->private; 2592 if (!lport) 2593 goto input_err; 2594 2595 spin_lock_irq(&ndlp->lock); 2596 rport = lpfc_ndlp_get_nrport(ndlp); 2597 if (rport) 2598 remoteport = rport->remoteport; 2599 spin_unlock_irq(&ndlp->lock); 2600 if (!remoteport) 2601 goto input_err; 2602 2603 lpfc_printf_vlog(vport, KERN_INFO, LOG_NVME_DISC, 2604 "6033 Unreg nvme remoteport x%px, portname x%llx, " 2605 "port_id x%06x, portstate x%x port type x%x " 2606 "refcnt %d\n", 2607 remoteport, remoteport->port_name, 2608 remoteport->port_id, remoteport->port_state, 2609 ndlp->nlp_type, kref_read(&ndlp->kref)); 2610 2611 /* Sanity check ndlp type. Only call for NVME ports. Don't 2612 * clear any rport state until the transport calls back. 2613 */ 2614 2615 if (ndlp->nlp_type & NLP_NVME_TARGET) { 2616 /* No concern about the role change on the nvme remoteport. 2617 * The transport will update it. 2618 */ 2619 spin_lock_irq(&vport->phba->hbalock); 2620 ndlp->fc4_xpt_flags |= NVME_XPT_UNREG_WAIT; 2621 spin_unlock_irq(&vport->phba->hbalock); 2622 2623 /* Don't let the host nvme transport keep sending keep-alives 2624 * on this remoteport. Vport is unloading, no recovery. The 2625 * return values is ignored. The upcall is a courtesy to the 2626 * transport. 2627 */ 2628 if (vport->load_flag & FC_UNLOADING || 2629 unlikely(vport->phba->link_state == LPFC_HBA_ERROR)) 2630 (void)nvme_fc_set_remoteport_devloss(remoteport, 0); 2631 2632 ret = nvme_fc_unregister_remoteport(remoteport); 2633 2634 /* The driver no longer knows if the nrport memory is valid. 2635 * because the controller teardown process has begun and 2636 * is asynchronous. Break the binding in the ndlp. Also 2637 * remove the register ndlp reference to setup node release. 2638 */ 2639 ndlp->nrport = NULL; 2640 lpfc_nlp_put(ndlp); 2641 if (ret != 0) { 2642 lpfc_printf_vlog(vport, KERN_ERR, LOG_TRACE_EVENT, 2643 "6167 NVME unregister failed %d " 2644 "port_state x%x\n", 2645 ret, remoteport->port_state); 2646 2647 if (vport->load_flag & FC_UNLOADING) { 2648 /* Only 1 thread can drop the initial node 2649 * reference. Check if another thread has set 2650 * NLP_DROPPED. 2651 */ 2652 spin_lock_irq(&ndlp->lock); 2653 if (!(ndlp->nlp_flag & NLP_DROPPED)) { 2654 ndlp->nlp_flag |= NLP_DROPPED; 2655 spin_unlock_irq(&ndlp->lock); 2656 lpfc_nlp_put(ndlp); 2657 return; 2658 } 2659 spin_unlock_irq(&ndlp->lock); 2660 } 2661 } 2662 } 2663 return; 2664 2665 input_err: 2666 #endif 2667 lpfc_printf_vlog(vport, KERN_ERR, LOG_TRACE_EVENT, 2668 "6168 State error: lport x%px, rport x%px FCID x%06x\n", 2669 vport->localport, ndlp->rport, ndlp->nlp_DID); 2670 } 2671 2672 /** 2673 * lpfc_sli4_nvme_pci_offline_aborted - Fast-path process of NVME xri abort 2674 * @phba: pointer to lpfc hba data structure. 2675 * @lpfc_ncmd: The nvme job structure for the request being aborted. 2676 * 2677 * This routine is invoked by the worker thread to process a SLI4 fast-path 2678 * NVME aborted xri. Aborted NVME IO commands are completed to the transport 2679 * here. 2680 **/ 2681 void 2682 lpfc_sli4_nvme_pci_offline_aborted(struct lpfc_hba *phba, 2683 struct lpfc_io_buf *lpfc_ncmd) 2684 { 2685 struct nvmefc_fcp_req *nvme_cmd = NULL; 2686 2687 lpfc_printf_log(phba, KERN_INFO, LOG_NVME_ABTS, 2688 "6533 %s nvme_cmd %p tag x%x abort complete and " 2689 "xri released\n", __func__, 2690 lpfc_ncmd->nvmeCmd, 2691 lpfc_ncmd->cur_iocbq.iotag); 2692 2693 /* Aborted NVME commands are required to not complete 2694 * before the abort exchange command fully completes. 2695 * Once completed, it is available via the put list. 2696 */ 2697 if (lpfc_ncmd->nvmeCmd) { 2698 nvme_cmd = lpfc_ncmd->nvmeCmd; 2699 nvme_cmd->transferred_length = 0; 2700 nvme_cmd->rcv_rsplen = 0; 2701 nvme_cmd->status = NVME_SC_INTERNAL; 2702 nvme_cmd->done(nvme_cmd); 2703 lpfc_ncmd->nvmeCmd = NULL; 2704 } 2705 lpfc_release_nvme_buf(phba, lpfc_ncmd); 2706 } 2707 2708 /** 2709 * lpfc_sli4_nvme_xri_aborted - Fast-path process of NVME xri abort 2710 * @phba: pointer to lpfc hba data structure. 2711 * @axri: pointer to the fcp xri abort wcqe structure. 2712 * @lpfc_ncmd: The nvme job structure for the request being aborted. 2713 * 2714 * This routine is invoked by the worker thread to process a SLI4 fast-path 2715 * NVME aborted xri. Aborted NVME IO commands are completed to the transport 2716 * here. 2717 **/ 2718 void 2719 lpfc_sli4_nvme_xri_aborted(struct lpfc_hba *phba, 2720 struct sli4_wcqe_xri_aborted *axri, 2721 struct lpfc_io_buf *lpfc_ncmd) 2722 { 2723 uint16_t xri = bf_get(lpfc_wcqe_xa_xri, axri); 2724 struct nvmefc_fcp_req *nvme_cmd = NULL; 2725 struct lpfc_nodelist *ndlp = lpfc_ncmd->ndlp; 2726 2727 2728 if (ndlp) 2729 lpfc_sli4_abts_err_handler(phba, ndlp, axri); 2730 2731 lpfc_printf_log(phba, KERN_INFO, LOG_NVME_ABTS, 2732 "6311 nvme_cmd %p xri x%x tag x%x abort complete and " 2733 "xri released\n", 2734 lpfc_ncmd->nvmeCmd, xri, 2735 lpfc_ncmd->cur_iocbq.iotag); 2736 2737 /* Aborted NVME commands are required to not complete 2738 * before the abort exchange command fully completes. 2739 * Once completed, it is available via the put list. 2740 */ 2741 if (lpfc_ncmd->nvmeCmd) { 2742 nvme_cmd = lpfc_ncmd->nvmeCmd; 2743 nvme_cmd->done(nvme_cmd); 2744 lpfc_ncmd->nvmeCmd = NULL; 2745 } 2746 lpfc_release_nvme_buf(phba, lpfc_ncmd); 2747 } 2748 2749 /** 2750 * lpfc_nvme_wait_for_io_drain - Wait for all NVME wqes to complete 2751 * @phba: Pointer to HBA context object. 2752 * 2753 * This function flushes all wqes in the nvme rings and frees all resources 2754 * in the txcmplq. This function does not issue abort wqes for the IO 2755 * commands in txcmplq, they will just be returned with 2756 * IOERR_SLI_DOWN. This function is invoked with EEH when device's PCI 2757 * slot has been permanently disabled. 2758 **/ 2759 void 2760 lpfc_nvme_wait_for_io_drain(struct lpfc_hba *phba) 2761 { 2762 struct lpfc_sli_ring *pring; 2763 u32 i, wait_cnt = 0; 2764 2765 if (phba->sli_rev < LPFC_SLI_REV4 || !phba->sli4_hba.hdwq) 2766 return; 2767 2768 /* Cycle through all IO rings and make sure all outstanding 2769 * WQEs have been removed from the txcmplqs. 2770 */ 2771 for (i = 0; i < phba->cfg_hdw_queue; i++) { 2772 if (!phba->sli4_hba.hdwq[i].io_wq) 2773 continue; 2774 pring = phba->sli4_hba.hdwq[i].io_wq->pring; 2775 2776 if (!pring) 2777 continue; 2778 2779 /* Retrieve everything on the txcmplq */ 2780 while (!list_empty(&pring->txcmplq)) { 2781 msleep(LPFC_XRI_EXCH_BUSY_WAIT_T1); 2782 wait_cnt++; 2783 2784 /* The sleep is 10mS. Every ten seconds, 2785 * dump a message. Something is wrong. 2786 */ 2787 if ((wait_cnt % 1000) == 0) { 2788 lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT, 2789 "6178 NVME IO not empty, " 2790 "cnt %d\n", wait_cnt); 2791 } 2792 } 2793 } 2794 2795 /* Make sure HBA is alive */ 2796 lpfc_issue_hb_tmo(phba); 2797 2798 } 2799 2800 void 2801 lpfc_nvme_cancel_iocb(struct lpfc_hba *phba, struct lpfc_iocbq *pwqeIn, 2802 uint32_t stat, uint32_t param) 2803 { 2804 #if (IS_ENABLED(CONFIG_NVME_FC)) 2805 struct lpfc_io_buf *lpfc_ncmd; 2806 struct nvmefc_fcp_req *nCmd; 2807 struct lpfc_wcqe_complete wcqe; 2808 struct lpfc_wcqe_complete *wcqep = &wcqe; 2809 2810 lpfc_ncmd = pwqeIn->io_buf; 2811 if (!lpfc_ncmd) { 2812 lpfc_sli_release_iocbq(phba, pwqeIn); 2813 return; 2814 } 2815 /* For abort iocb just return, IO iocb will do a done call */ 2816 if (bf_get(wqe_cmnd, &pwqeIn->wqe.gen_req.wqe_com) == 2817 CMD_ABORT_XRI_CX) { 2818 lpfc_sli_release_iocbq(phba, pwqeIn); 2819 return; 2820 } 2821 2822 spin_lock(&lpfc_ncmd->buf_lock); 2823 nCmd = lpfc_ncmd->nvmeCmd; 2824 if (!nCmd) { 2825 spin_unlock(&lpfc_ncmd->buf_lock); 2826 lpfc_release_nvme_buf(phba, lpfc_ncmd); 2827 return; 2828 } 2829 spin_unlock(&lpfc_ncmd->buf_lock); 2830 2831 lpfc_printf_log(phba, KERN_INFO, LOG_NVME_IOERR, 2832 "6194 NVME Cancel xri %x\n", 2833 lpfc_ncmd->cur_iocbq.sli4_xritag); 2834 2835 wcqep->word0 = 0; 2836 bf_set(lpfc_wcqe_c_status, wcqep, stat); 2837 wcqep->parameter = param; 2838 wcqep->total_data_placed = 0; 2839 wcqep->word3 = 0; /* xb is 0 */ 2840 2841 /* Call release with XB=1 to queue the IO into the abort list. */ 2842 if (phba->sli.sli_flag & LPFC_SLI_ACTIVE) 2843 bf_set(lpfc_wcqe_c_xb, wcqep, 1); 2844 2845 memcpy(&pwqeIn->wcqe_cmpl, wcqep, sizeof(*wcqep)); 2846 (pwqeIn->cmd_cmpl)(phba, pwqeIn, pwqeIn); 2847 #endif 2848 } 2849