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