1 /*******************************************************************
2 * This file is part of the Emulex Linux Device Driver for *
3 * Fibre Channel Host Bus Adapters. *
4 * Copyright (C) 2017-2019 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. *
9 * Portions Copyright (C) 2004-2005 Christoph Hellwig *
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>
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>
39 #include <linux/nvme.h>
40 #include <linux/nvme-fc-driver.h>
41 #include <linux/nvme-fc.h>
42 #include "lpfc_version.h"
46 #include "lpfc_sli4.h"
48 #include "lpfc_disc.h"
50 #include "lpfc_nvme.h"
51 #include "lpfc_scsi.h"
52 #include "lpfc_logmsg.h"
53 #include "lpfc_crtn.h"
54 #include "lpfc_vport.h"
55 #include "lpfc_debugfs.h"
57 /* NVME initiator-based functions */
59 static struct lpfc_io_buf *
60 lpfc_get_nvme_buf(struct lpfc_hba *phba, struct lpfc_nodelist *ndlp,
61 int idx, int expedite);
64 lpfc_release_nvme_buf(struct lpfc_hba *, struct lpfc_io_buf *);
66 static struct nvme_fc_port_template lpfc_nvme_template;
68 static union lpfc_wqe128 lpfc_iread_cmd_template;
69 static union lpfc_wqe128 lpfc_iwrite_cmd_template;
70 static union lpfc_wqe128 lpfc_icmnd_cmd_template;
72 /* Setup WQE templates for NVME IOs */
74 lpfc_nvme_cmd_template(void)
76 union lpfc_wqe128 *wqe;
79 wqe = &lpfc_iread_cmd_template;
80 memset(wqe, 0, sizeof(union lpfc_wqe128));
82 /* Word 0, 1, 2 - BDE is variable */
84 /* Word 3 - cmd_buff_len, payload_offset_len is zero */
86 /* Word 4 - total_xfer_len is variable */
88 /* Word 5 - is zero */
90 /* Word 6 - ctxt_tag, xri_tag is variable */
93 bf_set(wqe_cmnd, &wqe->fcp_iread.wqe_com, CMD_FCP_IREAD64_WQE);
94 bf_set(wqe_pu, &wqe->fcp_iread.wqe_com, PARM_READ_CHECK);
95 bf_set(wqe_class, &wqe->fcp_iread.wqe_com, CLASS3);
96 bf_set(wqe_ct, &wqe->fcp_iread.wqe_com, SLI4_CT_RPI);
98 /* Word 8 - abort_tag is variable */
100 /* Word 9 - reqtag is variable */
102 /* Word 10 - dbde, wqes is variable */
103 bf_set(wqe_qosd, &wqe->fcp_iread.wqe_com, 0);
104 bf_set(wqe_nvme, &wqe->fcp_iread.wqe_com, 1);
105 bf_set(wqe_iod, &wqe->fcp_iread.wqe_com, LPFC_WQE_IOD_READ);
106 bf_set(wqe_lenloc, &wqe->fcp_iread.wqe_com, LPFC_WQE_LENLOC_WORD4);
107 bf_set(wqe_dbde, &wqe->fcp_iread.wqe_com, 0);
108 bf_set(wqe_wqes, &wqe->fcp_iread.wqe_com, 1);
110 /* Word 11 - pbde is variable */
111 bf_set(wqe_cmd_type, &wqe->fcp_iread.wqe_com, NVME_READ_CMD);
112 bf_set(wqe_cqid, &wqe->fcp_iread.wqe_com, LPFC_WQE_CQ_ID_DEFAULT);
113 bf_set(wqe_pbde, &wqe->fcp_iread.wqe_com, 1);
115 /* Word 12 - is zero */
117 /* Word 13, 14, 15 - PBDE is variable */
119 /* IWRITE template */
120 wqe = &lpfc_iwrite_cmd_template;
121 memset(wqe, 0, sizeof(union lpfc_wqe128));
123 /* Word 0, 1, 2 - BDE is variable */
125 /* Word 3 - cmd_buff_len, payload_offset_len is zero */
127 /* Word 4 - total_xfer_len is variable */
129 /* Word 5 - initial_xfer_len is variable */
131 /* Word 6 - ctxt_tag, xri_tag is variable */
134 bf_set(wqe_cmnd, &wqe->fcp_iwrite.wqe_com, CMD_FCP_IWRITE64_WQE);
135 bf_set(wqe_pu, &wqe->fcp_iwrite.wqe_com, PARM_READ_CHECK);
136 bf_set(wqe_class, &wqe->fcp_iwrite.wqe_com, CLASS3);
137 bf_set(wqe_ct, &wqe->fcp_iwrite.wqe_com, SLI4_CT_RPI);
139 /* Word 8 - abort_tag is variable */
141 /* Word 9 - reqtag is variable */
143 /* Word 10 - dbde, wqes is variable */
144 bf_set(wqe_qosd, &wqe->fcp_iwrite.wqe_com, 0);
145 bf_set(wqe_nvme, &wqe->fcp_iwrite.wqe_com, 1);
146 bf_set(wqe_iod, &wqe->fcp_iwrite.wqe_com, LPFC_WQE_IOD_WRITE);
147 bf_set(wqe_lenloc, &wqe->fcp_iwrite.wqe_com, LPFC_WQE_LENLOC_WORD4);
148 bf_set(wqe_dbde, &wqe->fcp_iwrite.wqe_com, 0);
149 bf_set(wqe_wqes, &wqe->fcp_iwrite.wqe_com, 1);
151 /* Word 11 - pbde is variable */
152 bf_set(wqe_cmd_type, &wqe->fcp_iwrite.wqe_com, NVME_WRITE_CMD);
153 bf_set(wqe_cqid, &wqe->fcp_iwrite.wqe_com, LPFC_WQE_CQ_ID_DEFAULT);
154 bf_set(wqe_pbde, &wqe->fcp_iwrite.wqe_com, 1);
156 /* Word 12 - is zero */
158 /* Word 13, 14, 15 - PBDE is variable */
161 wqe = &lpfc_icmnd_cmd_template;
162 memset(wqe, 0, sizeof(union lpfc_wqe128));
164 /* Word 0, 1, 2 - BDE is variable */
166 /* Word 3 - payload_offset_len is variable */
168 /* Word 4, 5 - is zero */
170 /* Word 6 - ctxt_tag, xri_tag is variable */
173 bf_set(wqe_cmnd, &wqe->fcp_icmd.wqe_com, CMD_FCP_ICMND64_WQE);
174 bf_set(wqe_pu, &wqe->fcp_icmd.wqe_com, 0);
175 bf_set(wqe_class, &wqe->fcp_icmd.wqe_com, CLASS3);
176 bf_set(wqe_ct, &wqe->fcp_icmd.wqe_com, SLI4_CT_RPI);
178 /* Word 8 - abort_tag is variable */
180 /* Word 9 - reqtag is variable */
182 /* Word 10 - dbde, wqes is variable */
183 bf_set(wqe_qosd, &wqe->fcp_icmd.wqe_com, 1);
184 bf_set(wqe_nvme, &wqe->fcp_icmd.wqe_com, 1);
185 bf_set(wqe_iod, &wqe->fcp_icmd.wqe_com, LPFC_WQE_IOD_NONE);
186 bf_set(wqe_lenloc, &wqe->fcp_icmd.wqe_com, LPFC_WQE_LENLOC_NONE);
187 bf_set(wqe_dbde, &wqe->fcp_icmd.wqe_com, 0);
188 bf_set(wqe_wqes, &wqe->fcp_icmd.wqe_com, 1);
191 bf_set(wqe_cmd_type, &wqe->fcp_icmd.wqe_com, FCP_COMMAND);
192 bf_set(wqe_cqid, &wqe->fcp_icmd.wqe_com, LPFC_WQE_CQ_ID_DEFAULT);
193 bf_set(wqe_pbde, &wqe->fcp_icmd.wqe_com, 0);
195 /* Word 12, 13, 14, 15 - is zero */
199 * lpfc_nvme_create_queue -
200 * @lpfc_pnvme: Pointer to the driver's nvme instance data
201 * @qidx: An cpu index used to affinitize IO queues and MSIX vectors.
202 * @handle: An opaque driver handle used in follow-up calls.
204 * Driver registers this routine to preallocate and initialize any
205 * internal data structures to bind the @qidx to its internal IO queues.
206 * A hardware queue maps (qidx) to a specific driver MSI-X vector/EQ/CQ/WQ.
210 * -EINVAL - Unsupported input value.
211 * -ENOMEM - Could not alloc necessary memory
214 lpfc_nvme_create_queue(struct nvme_fc_local_port *pnvme_lport,
215 unsigned int qidx, u16 qsize,
218 struct lpfc_nvme_lport *lport;
219 struct lpfc_vport *vport;
220 struct lpfc_nvme_qhandle *qhandle;
223 if (!pnvme_lport->private)
226 lport = (struct lpfc_nvme_lport *)pnvme_lport->private;
227 vport = lport->vport;
228 qhandle = kzalloc(sizeof(struct lpfc_nvme_qhandle), GFP_KERNEL);
232 qhandle->cpu_id = smp_processor_id();
233 qhandle->qidx = qidx;
235 * NVME qidx == 0 is the admin queue, so both admin queue
236 * and first IO queue will use MSI-X vector and associated
237 * EQ/CQ/WQ at index 0. After that they are sequentially assigned.
240 str = "IO "; /* IO queue */
241 qhandle->index = ((qidx - 1) %
242 lpfc_nvme_template.max_hw_queues);
244 str = "ADM"; /* Admin queue */
245 qhandle->index = qidx;
248 lpfc_printf_vlog(vport, KERN_INFO, LOG_NVME,
249 "6073 Binding %s HdwQueue %d (cpu %d) to "
250 "hdw_queue %d qhandle %p\n", str,
251 qidx, qhandle->cpu_id, qhandle->index, qhandle);
252 *handle = (void *)qhandle;
257 * lpfc_nvme_delete_queue -
258 * @lpfc_pnvme: Pointer to the driver's nvme instance data
259 * @qidx: An cpu index used to affinitize IO queues and MSIX vectors.
260 * @handle: An opaque driver handle from lpfc_nvme_create_queue
262 * Driver registers this routine to free
263 * any internal data structures to bind the @qidx to its internal
268 * TODO: What are the failure codes.
271 lpfc_nvme_delete_queue(struct nvme_fc_local_port *pnvme_lport,
275 struct lpfc_nvme_lport *lport;
276 struct lpfc_vport *vport;
278 if (!pnvme_lport->private)
281 lport = (struct lpfc_nvme_lport *)pnvme_lport->private;
282 vport = lport->vport;
284 lpfc_printf_vlog(vport, KERN_INFO, LOG_NVME,
285 "6001 ENTER. lpfc_pnvme %p, qidx x%x qhandle %p\n",
286 lport, qidx, handle);
291 lpfc_nvme_localport_delete(struct nvme_fc_local_port *localport)
293 struct lpfc_nvme_lport *lport = localport->private;
295 lpfc_printf_vlog(lport->vport, KERN_INFO, LOG_NVME,
296 "6173 localport %p delete complete\n",
299 /* release any threads waiting for the unreg to complete */
300 if (lport->vport->localport)
301 complete(lport->lport_unreg_cmp);
304 /* lpfc_nvme_remoteport_delete
306 * @remoteport: Pointer to an nvme transport remoteport instance.
308 * This is a template downcall. NVME transport calls this function
309 * when it has completed the unregistration of a previously
310 * registered remoteport.
316 lpfc_nvme_remoteport_delete(struct nvme_fc_remote_port *remoteport)
318 struct lpfc_nvme_rport *rport = remoteport->private;
319 struct lpfc_vport *vport;
320 struct lpfc_nodelist *ndlp;
330 /* Remove this rport from the lport's list - memory is owned by the
331 * transport. Remove the ndlp reference for the NVME transport before
332 * calling state machine to remove the node.
334 lpfc_printf_vlog(vport, KERN_INFO, LOG_NVME_DISC,
335 "6146 remoteport delete of remoteport %p\n",
337 spin_lock_irq(&vport->phba->hbalock);
339 /* The register rebind might have occurred before the delete
340 * downcall. Guard against this race.
342 if (ndlp->upcall_flags & NLP_WAIT_FOR_UNREG) {
344 ndlp->upcall_flags &= ~NLP_WAIT_FOR_UNREG;
346 spin_unlock_irq(&vport->phba->hbalock);
348 /* Remove original register reference. The host transport
349 * won't reference this rport/remoteport any further.
358 lpfc_nvme_cmpl_gen_req(struct lpfc_hba *phba, struct lpfc_iocbq *cmdwqe,
359 struct lpfc_wcqe_complete *wcqe)
361 struct lpfc_vport *vport = cmdwqe->vport;
362 struct lpfc_nvme_lport *lport;
364 struct nvmefc_ls_req *pnvme_lsreq;
365 struct lpfc_dmabuf *buf_ptr;
366 struct lpfc_nodelist *ndlp;
368 pnvme_lsreq = (struct nvmefc_ls_req *)cmdwqe->context2;
369 status = bf_get(lpfc_wcqe_c_status, wcqe) & LPFC_IOCB_STATUS_MASK;
371 if (vport->localport) {
372 lport = (struct lpfc_nvme_lport *)vport->localport->private;
374 atomic_inc(&lport->fc4NvmeLsCmpls);
376 if (bf_get(lpfc_wcqe_c_xb, wcqe))
377 atomic_inc(&lport->cmpl_ls_xb);
378 atomic_inc(&lport->cmpl_ls_err);
383 ndlp = (struct lpfc_nodelist *)cmdwqe->context1;
384 lpfc_printf_vlog(vport, KERN_INFO, LOG_NVME_DISC,
385 "6047 nvme cmpl Enter "
386 "Data %p DID %x Xri: %x status %x reason x%x cmd:%p "
387 "lsreg:%p bmp:%p ndlp:%p\n",
388 pnvme_lsreq, ndlp ? ndlp->nlp_DID : 0,
389 cmdwqe->sli4_xritag, status,
390 (wcqe->parameter & 0xffff),
391 cmdwqe, pnvme_lsreq, cmdwqe->context3, ndlp);
393 lpfc_nvmeio_data(phba, "NVME LS CMPL: xri x%x stat x%x parm x%x\n",
394 cmdwqe->sli4_xritag, status, wcqe->parameter);
396 if (cmdwqe->context3) {
397 buf_ptr = (struct lpfc_dmabuf *)cmdwqe->context3;
398 lpfc_mbuf_free(phba, buf_ptr->virt, buf_ptr->phys);
400 cmdwqe->context3 = NULL;
402 if (pnvme_lsreq->done)
403 pnvme_lsreq->done(pnvme_lsreq, status);
405 lpfc_printf_vlog(vport, KERN_ERR, LOG_NVME_DISC,
406 "6046 nvme cmpl without done call back? "
407 "Data %p DID %x Xri: %x status %x\n",
408 pnvme_lsreq, ndlp ? ndlp->nlp_DID : 0,
409 cmdwqe->sli4_xritag, status);
412 cmdwqe->context1 = NULL;
414 lpfc_sli_release_iocbq(phba, cmdwqe);
418 lpfc_nvme_gen_req(struct lpfc_vport *vport, struct lpfc_dmabuf *bmp,
419 struct lpfc_dmabuf *inp,
420 struct nvmefc_ls_req *pnvme_lsreq,
421 void (*cmpl)(struct lpfc_hba *, struct lpfc_iocbq *,
422 struct lpfc_wcqe_complete *),
423 struct lpfc_nodelist *ndlp, uint32_t num_entry,
424 uint32_t tmo, uint8_t retry)
426 struct lpfc_hba *phba = vport->phba;
427 union lpfc_wqe128 *wqe;
428 struct lpfc_iocbq *genwqe;
429 struct ulp_bde64 *bpl;
430 struct ulp_bde64 bde;
431 int i, rc, xmit_len, first_len;
433 /* Allocate buffer for command WQE */
434 genwqe = lpfc_sli_get_iocbq(phba);
439 memset(wqe, 0, sizeof(union lpfc_wqe));
441 genwqe->context3 = (uint8_t *)bmp;
442 genwqe->iocb_flag |= LPFC_IO_NVME_LS;
444 /* Save for completion so we can release these resources */
445 genwqe->context1 = lpfc_nlp_get(ndlp);
446 genwqe->context2 = (uint8_t *)pnvme_lsreq;
447 /* Fill in payload, bp points to frame payload */
450 /* FC spec states we need 3 * ratov for CT requests */
451 tmo = (3 * phba->fc_ratov);
453 /* For this command calculate the xmit length of the request bde. */
456 bpl = (struct ulp_bde64 *)bmp->virt;
457 for (i = 0; i < num_entry; i++) {
458 bde.tus.w = bpl[i].tus.w;
459 if (bde.tus.f.bdeFlags != BUFF_TYPE_BDE_64)
461 xmit_len += bde.tus.f.bdeSize;
463 first_len = xmit_len;
466 genwqe->rsvd2 = num_entry;
467 genwqe->hba_wqidx = 0;
470 wqe->generic.bde.tus.f.bdeFlags = BUFF_TYPE_BDE_64;
471 wqe->generic.bde.tus.f.bdeSize = first_len;
472 wqe->generic.bde.addrLow = bpl[0].addrLow;
473 wqe->generic.bde.addrHigh = bpl[0].addrHigh;
476 wqe->gen_req.request_payload_len = first_len;
481 bf_set(wqe_dfctl, &wqe->gen_req.wge_ctl, 0);
482 bf_set(wqe_si, &wqe->gen_req.wge_ctl, 1);
483 bf_set(wqe_la, &wqe->gen_req.wge_ctl, 1);
484 bf_set(wqe_rctl, &wqe->gen_req.wge_ctl, FC_RCTL_ELS4_REQ);
485 bf_set(wqe_type, &wqe->gen_req.wge_ctl, FC_TYPE_NVME);
488 bf_set(wqe_ctxt_tag, &wqe->gen_req.wqe_com,
489 phba->sli4_hba.rpi_ids[ndlp->nlp_rpi]);
490 bf_set(wqe_xri_tag, &wqe->gen_req.wqe_com, genwqe->sli4_xritag);
493 bf_set(wqe_tmo, &wqe->gen_req.wqe_com, (vport->phba->fc_ratov-1));
494 bf_set(wqe_class, &wqe->gen_req.wqe_com, CLASS3);
495 bf_set(wqe_cmnd, &wqe->gen_req.wqe_com, CMD_GEN_REQUEST64_WQE);
496 bf_set(wqe_ct, &wqe->gen_req.wqe_com, SLI4_CT_RPI);
499 wqe->gen_req.wqe_com.abort_tag = genwqe->iotag;
502 bf_set(wqe_reqtag, &wqe->gen_req.wqe_com, genwqe->iotag);
505 bf_set(wqe_dbde, &wqe->gen_req.wqe_com, 1);
506 bf_set(wqe_iod, &wqe->gen_req.wqe_com, LPFC_WQE_IOD_READ);
507 bf_set(wqe_qosd, &wqe->gen_req.wqe_com, 1);
508 bf_set(wqe_lenloc, &wqe->gen_req.wqe_com, LPFC_WQE_LENLOC_NONE);
509 bf_set(wqe_ebde_cnt, &wqe->gen_req.wqe_com, 0);
512 bf_set(wqe_cqid, &wqe->gen_req.wqe_com, LPFC_WQE_CQ_ID_DEFAULT);
513 bf_set(wqe_cmd_type, &wqe->gen_req.wqe_com, OTHER_COMMAND);
516 /* Issue GEN REQ WQE for NPORT <did> */
517 lpfc_printf_vlog(vport, KERN_INFO, LOG_ELS,
518 "6050 Issue GEN REQ WQE to NPORT x%x "
519 "Data: x%x x%x wq:%p lsreq:%p bmp:%p xmit:%d 1st:%d\n",
520 ndlp->nlp_DID, genwqe->iotag,
522 genwqe, pnvme_lsreq, bmp, xmit_len, first_len);
523 genwqe->wqe_cmpl = cmpl;
524 genwqe->iocb_cmpl = NULL;
525 genwqe->drvrTimeout = tmo + LPFC_DRVR_TIMEOUT;
526 genwqe->vport = vport;
527 genwqe->retry = retry;
529 lpfc_nvmeio_data(phba, "NVME LS XMIT: xri x%x iotag x%x to x%06x\n",
530 genwqe->sli4_xritag, genwqe->iotag, ndlp->nlp_DID);
532 rc = lpfc_sli4_issue_wqe(phba, &phba->sli4_hba.hdwq[0], genwqe);
534 lpfc_printf_vlog(vport, KERN_ERR, LOG_ELS,
535 "6045 Issue GEN REQ WQE to NPORT x%x "
537 ndlp->nlp_DID, genwqe->iotag,
539 lpfc_sli_release_iocbq(phba, genwqe);
546 * lpfc_nvme_ls_req - Issue an Link Service request
547 * @lpfc_pnvme: Pointer to the driver's nvme instance data
548 * @lpfc_nvme_lport: Pointer to the driver's local port data
549 * @lpfc_nvme_rport: Pointer to the rport getting the @lpfc_nvme_ereq
551 * Driver registers this routine to handle any link service request
552 * from the nvme_fc transport to a remote nvme-aware port.
556 * TODO: What are the failure codes.
559 lpfc_nvme_ls_req(struct nvme_fc_local_port *pnvme_lport,
560 struct nvme_fc_remote_port *pnvme_rport,
561 struct nvmefc_ls_req *pnvme_lsreq)
564 struct lpfc_nvme_lport *lport;
565 struct lpfc_nvme_rport *rport;
566 struct lpfc_vport *vport;
567 struct lpfc_nodelist *ndlp;
568 struct ulp_bde64 *bpl;
569 struct lpfc_dmabuf *bmp;
570 uint16_t ntype, nstate;
572 /* there are two dma buf in the request, actually there is one and
573 * the second one is just the start address + cmd size.
574 * Before calling lpfc_nvme_gen_req these buffers need to be wrapped
575 * in a lpfc_dmabuf struct. When freeing we just free the wrapper
576 * because the nvem layer owns the data bufs.
577 * We do not have to break these packets open, we don't care what is in
578 * them. And we do not have to look at the resonse data, we only care
579 * that we got a response. All of the caring is going to happen in the
583 lport = (struct lpfc_nvme_lport *)pnvme_lport->private;
584 rport = (struct lpfc_nvme_rport *)pnvme_rport->private;
585 if (unlikely(!lport) || unlikely(!rport))
588 vport = lport->vport;
590 if (vport->load_flag & FC_UNLOADING)
593 /* Need the ndlp. It is stored in the driver's rport. */
595 if (!ndlp || !NLP_CHK_NODE_ACT(ndlp)) {
596 lpfc_printf_vlog(vport, KERN_ERR, LOG_NODE | LOG_NVME_IOERR,
597 "6051 Remoteport %p, rport has invalid ndlp. "
598 "Failing LS Req\n", pnvme_rport);
602 /* The remote node has to be a mapped nvme target or an
603 * unmapped nvme initiator or it's an error.
605 ntype = ndlp->nlp_type;
606 nstate = ndlp->nlp_state;
607 if ((ntype & NLP_NVME_TARGET && nstate != NLP_STE_MAPPED_NODE) ||
608 (ntype & NLP_NVME_INITIATOR && nstate != NLP_STE_UNMAPPED_NODE)) {
609 lpfc_printf_vlog(vport, KERN_ERR, LOG_NODE | LOG_NVME_IOERR,
610 "6088 DID x%06x not ready for "
611 "IO. State x%x, Type x%x\n",
612 pnvme_rport->port_id,
613 ndlp->nlp_state, ndlp->nlp_type);
616 bmp = kmalloc(sizeof(struct lpfc_dmabuf), GFP_KERNEL);
619 lpfc_printf_vlog(vport, KERN_ERR, LOG_NVME_DISC,
620 "6044 Could not find node for DID %x\n",
621 pnvme_rport->port_id);
624 INIT_LIST_HEAD(&bmp->list);
625 bmp->virt = lpfc_mbuf_alloc(vport->phba, MEM_PRI, &(bmp->phys));
627 lpfc_printf_vlog(vport, KERN_ERR, LOG_NVME_DISC,
628 "6042 Could not find node for DID %x\n",
629 pnvme_rport->port_id);
633 bpl = (struct ulp_bde64 *)bmp->virt;
634 bpl->addrHigh = le32_to_cpu(putPaddrHigh(pnvme_lsreq->rqstdma));
635 bpl->addrLow = le32_to_cpu(putPaddrLow(pnvme_lsreq->rqstdma));
636 bpl->tus.f.bdeFlags = 0;
637 bpl->tus.f.bdeSize = pnvme_lsreq->rqstlen;
638 bpl->tus.w = le32_to_cpu(bpl->tus.w);
641 bpl->addrHigh = le32_to_cpu(putPaddrHigh(pnvme_lsreq->rspdma));
642 bpl->addrLow = le32_to_cpu(putPaddrLow(pnvme_lsreq->rspdma));
643 bpl->tus.f.bdeFlags = BUFF_TYPE_BDE_64I;
644 bpl->tus.f.bdeSize = pnvme_lsreq->rsplen;
645 bpl->tus.w = le32_to_cpu(bpl->tus.w);
647 /* Expand print to include key fields. */
648 lpfc_printf_vlog(vport, KERN_INFO, LOG_NVME_DISC,
649 "6149 Issue LS Req to DID 0x%06x lport %p, rport %p "
650 "lsreq%p rqstlen:%d rsplen:%d %pad %pad\n",
652 pnvme_lport, pnvme_rport,
653 pnvme_lsreq, pnvme_lsreq->rqstlen,
654 pnvme_lsreq->rsplen, &pnvme_lsreq->rqstdma,
655 &pnvme_lsreq->rspdma);
657 atomic_inc(&lport->fc4NvmeLsRequests);
659 /* Hardcode the wait to 30 seconds. Connections are failing otherwise.
660 * This code allows it all to work.
662 ret = lpfc_nvme_gen_req(vport, bmp, pnvme_lsreq->rqstaddr,
663 pnvme_lsreq, lpfc_nvme_cmpl_gen_req,
665 if (ret != WQE_SUCCESS) {
666 atomic_inc(&lport->xmt_ls_err);
667 lpfc_printf_vlog(vport, KERN_ERR, LOG_NVME_DISC,
668 "6052 EXIT. issue ls wqe failed lport %p, "
669 "rport %p lsreq%p Status %x DID %x\n",
670 pnvme_lport, pnvme_rport, pnvme_lsreq,
672 lpfc_mbuf_free(vport->phba, bmp->virt, bmp->phys);
677 /* Stub in routine and return 0 for now. */
682 * lpfc_nvme_ls_abort - Issue an Link Service request
683 * @lpfc_pnvme: Pointer to the driver's nvme instance data
684 * @lpfc_nvme_lport: Pointer to the driver's local port data
685 * @lpfc_nvme_rport: Pointer to the rport getting the @lpfc_nvme_ereq
687 * Driver registers this routine to handle any link service request
688 * from the nvme_fc transport to a remote nvme-aware port.
692 * TODO: What are the failure codes.
695 lpfc_nvme_ls_abort(struct nvme_fc_local_port *pnvme_lport,
696 struct nvme_fc_remote_port *pnvme_rport,
697 struct nvmefc_ls_req *pnvme_lsreq)
699 struct lpfc_nvme_lport *lport;
700 struct lpfc_vport *vport;
701 struct lpfc_hba *phba;
702 struct lpfc_nodelist *ndlp;
703 LIST_HEAD(abort_list);
704 struct lpfc_sli_ring *pring;
705 struct lpfc_iocbq *wqe, *next_wqe;
707 lport = (struct lpfc_nvme_lport *)pnvme_lport->private;
708 if (unlikely(!lport))
710 vport = lport->vport;
713 if (vport->load_flag & FC_UNLOADING)
716 ndlp = lpfc_findnode_did(vport, pnvme_rport->port_id);
718 lpfc_printf_vlog(vport, KERN_ERR, LOG_NVME_ABTS,
719 "6049 Could not find node for DID %x\n",
720 pnvme_rport->port_id);
724 /* Expand print to include key fields. */
725 lpfc_printf_vlog(vport, KERN_INFO, LOG_NVME_ABTS,
726 "6040 ENTER. lport %p, rport %p lsreq %p rqstlen:%d "
727 "rsplen:%d %pad %pad\n",
728 pnvme_lport, pnvme_rport,
729 pnvme_lsreq, pnvme_lsreq->rqstlen,
730 pnvme_lsreq->rsplen, &pnvme_lsreq->rqstdma,
731 &pnvme_lsreq->rspdma);
734 * Lock the ELS ring txcmplq and build a local list of all ELS IOs
735 * that need an ABTS. The IOs need to stay on the txcmplq so that
736 * the abort operation completes them successfully.
738 pring = phba->sli4_hba.nvmels_wq->pring;
739 spin_lock_irq(&phba->hbalock);
740 spin_lock(&pring->ring_lock);
741 list_for_each_entry_safe(wqe, next_wqe, &pring->txcmplq, list) {
742 /* Add to abort_list on on NDLP match. */
743 if (lpfc_check_sli_ndlp(phba, pring, wqe, ndlp)) {
744 wqe->iocb_flag |= LPFC_DRIVER_ABORTED;
745 list_add_tail(&wqe->dlist, &abort_list);
748 spin_unlock(&pring->ring_lock);
749 spin_unlock_irq(&phba->hbalock);
751 /* Abort the targeted IOs and remove them from the abort list. */
752 list_for_each_entry_safe(wqe, next_wqe, &abort_list, dlist) {
753 atomic_inc(&lport->xmt_ls_abort);
754 spin_lock_irq(&phba->hbalock);
755 list_del_init(&wqe->dlist);
756 lpfc_sli_issue_abort_iotag(phba, pring, wqe);
757 spin_unlock_irq(&phba->hbalock);
761 /* Fix up the existing sgls for NVME IO. */
763 lpfc_nvme_adj_fcp_sgls(struct lpfc_vport *vport,
764 struct lpfc_io_buf *lpfc_ncmd,
765 struct nvmefc_fcp_req *nCmd)
767 struct lpfc_hba *phba = vport->phba;
768 struct sli4_sge *sgl;
769 union lpfc_wqe128 *wqe;
770 uint32_t *wptr, *dptr;
773 * Get a local pointer to the built-in wqe and correct
774 * the cmd size to match NVME's 96 bytes and fix
778 wqe = &lpfc_ncmd->cur_iocbq.wqe;
781 * Adjust the FCP_CMD and FCP_RSP DMA data and sge_len to
782 * match NVME. NVME sends 96 bytes. Also, use the
783 * nvme commands command and response dma addresses
784 * rather than the virtual memory to ease the restore
787 sgl = lpfc_ncmd->dma_sgl;
788 sgl->sge_len = cpu_to_le32(nCmd->cmdlen);
789 if (phba->cfg_nvme_embed_cmd) {
793 /* Word 0-2 - NVME CMND IU (embedded payload) */
794 wqe->generic.bde.tus.f.bdeFlags = BUFF_TYPE_BDE_IMMED;
795 wqe->generic.bde.tus.f.bdeSize = 56;
796 wqe->generic.bde.addrHigh = 0;
797 wqe->generic.bde.addrLow = 64; /* Word 16 */
799 /* Word 10 - dbde is 0, wqes is 1 in template */
802 * Embed the payload in the last half of the WQE
803 * WQE words 16-30 get the NVME CMD IU payload
805 * WQE words 16-19 get payload Words 1-4
806 * WQE words 20-21 get payload Words 6-7
807 * WQE words 22-29 get payload Words 16-23
809 wptr = &wqe->words[16]; /* WQE ptr */
810 dptr = (uint32_t *)nCmd->cmdaddr; /* payload ptr */
811 dptr++; /* Skip Word 0 in payload */
813 *wptr++ = *dptr++; /* Word 1 */
814 *wptr++ = *dptr++; /* Word 2 */
815 *wptr++ = *dptr++; /* Word 3 */
816 *wptr++ = *dptr++; /* Word 4 */
817 dptr++; /* Skip Word 5 in payload */
818 *wptr++ = *dptr++; /* Word 6 */
819 *wptr++ = *dptr++; /* Word 7 */
820 dptr += 8; /* Skip Words 8-15 in payload */
821 *wptr++ = *dptr++; /* Word 16 */
822 *wptr++ = *dptr++; /* Word 17 */
823 *wptr++ = *dptr++; /* Word 18 */
824 *wptr++ = *dptr++; /* Word 19 */
825 *wptr++ = *dptr++; /* Word 20 */
826 *wptr++ = *dptr++; /* Word 21 */
827 *wptr++ = *dptr++; /* Word 22 */
828 *wptr = *dptr; /* Word 23 */
830 sgl->addr_hi = cpu_to_le32(putPaddrHigh(nCmd->cmddma));
831 sgl->addr_lo = cpu_to_le32(putPaddrLow(nCmd->cmddma));
833 /* Word 0-2 - NVME CMND IU Inline BDE */
834 wqe->generic.bde.tus.f.bdeFlags = BUFF_TYPE_BDE_64;
835 wqe->generic.bde.tus.f.bdeSize = nCmd->cmdlen;
836 wqe->generic.bde.addrHigh = sgl->addr_hi;
837 wqe->generic.bde.addrLow = sgl->addr_lo;
840 bf_set(wqe_dbde, &wqe->generic.wqe_com, 1);
841 bf_set(wqe_wqes, &wqe->generic.wqe_com, 0);
846 /* Setup the physical region for the FCP RSP */
847 sgl->addr_hi = cpu_to_le32(putPaddrHigh(nCmd->rspdma));
848 sgl->addr_lo = cpu_to_le32(putPaddrLow(nCmd->rspdma));
849 sgl->word2 = le32_to_cpu(sgl->word2);
851 bf_set(lpfc_sli4_sge_last, sgl, 0);
853 bf_set(lpfc_sli4_sge_last, sgl, 1);
854 sgl->word2 = cpu_to_le32(sgl->word2);
855 sgl->sge_len = cpu_to_le32(nCmd->rsplen);
858 #ifdef CONFIG_SCSI_LPFC_DEBUG_FS
860 lpfc_nvme_ktime(struct lpfc_hba *phba,
861 struct lpfc_io_buf *lpfc_ncmd)
863 uint64_t seg1, seg2, seg3, seg4;
866 if (!lpfc_ncmd->ts_last_cmd ||
867 !lpfc_ncmd->ts_cmd_start ||
868 !lpfc_ncmd->ts_cmd_wqput ||
869 !lpfc_ncmd->ts_isr_cmpl ||
870 !lpfc_ncmd->ts_data_nvme)
873 if (lpfc_ncmd->ts_data_nvme < lpfc_ncmd->ts_cmd_start)
875 if (lpfc_ncmd->ts_cmd_start < lpfc_ncmd->ts_last_cmd)
877 if (lpfc_ncmd->ts_cmd_wqput < lpfc_ncmd->ts_cmd_start)
879 if (lpfc_ncmd->ts_isr_cmpl < lpfc_ncmd->ts_cmd_wqput)
881 if (lpfc_ncmd->ts_data_nvme < lpfc_ncmd->ts_isr_cmpl)
884 * Segment 1 - Time from Last FCP command cmpl is handed
885 * off to NVME Layer to start of next command.
886 * Segment 2 - Time from Driver receives a IO cmd start
887 * from NVME Layer to WQ put is done on IO cmd.
888 * Segment 3 - Time from Driver WQ put is done on IO cmd
889 * to MSI-X ISR for IO cmpl.
890 * Segment 4 - Time from MSI-X ISR for IO cmpl to when
891 * cmpl is handled off to the NVME Layer.
893 seg1 = lpfc_ncmd->ts_cmd_start - lpfc_ncmd->ts_last_cmd;
894 if (seg1 > 5000000) /* 5 ms - for sequential IOs only */
897 /* Calculate times relative to start of IO */
898 seg2 = (lpfc_ncmd->ts_cmd_wqput - lpfc_ncmd->ts_cmd_start);
900 seg3 = lpfc_ncmd->ts_isr_cmpl - lpfc_ncmd->ts_cmd_start;
906 seg4 = lpfc_ncmd->ts_data_nvme - lpfc_ncmd->ts_cmd_start;
911 phba->ktime_data_samples++;
912 phba->ktime_seg1_total += seg1;
913 if (seg1 < phba->ktime_seg1_min)
914 phba->ktime_seg1_min = seg1;
915 else if (seg1 > phba->ktime_seg1_max)
916 phba->ktime_seg1_max = seg1;
917 phba->ktime_seg2_total += seg2;
918 if (seg2 < phba->ktime_seg2_min)
919 phba->ktime_seg2_min = seg2;
920 else if (seg2 > phba->ktime_seg2_max)
921 phba->ktime_seg2_max = seg2;
922 phba->ktime_seg3_total += seg3;
923 if (seg3 < phba->ktime_seg3_min)
924 phba->ktime_seg3_min = seg3;
925 else if (seg3 > phba->ktime_seg3_max)
926 phba->ktime_seg3_max = seg3;
927 phba->ktime_seg4_total += seg4;
928 if (seg4 < phba->ktime_seg4_min)
929 phba->ktime_seg4_min = seg4;
930 else if (seg4 > phba->ktime_seg4_max)
931 phba->ktime_seg4_max = seg4;
933 lpfc_ncmd->ts_last_cmd = 0;
934 lpfc_ncmd->ts_cmd_start = 0;
935 lpfc_ncmd->ts_cmd_wqput = 0;
936 lpfc_ncmd->ts_isr_cmpl = 0;
937 lpfc_ncmd->ts_data_nvme = 0;
942 * lpfc_nvme_io_cmd_wqe_cmpl - Complete an NVME-over-FCP IO
943 * @lpfc_pnvme: Pointer to the driver's nvme instance data
944 * @lpfc_nvme_lport: Pointer to the driver's local port data
945 * @lpfc_nvme_rport: Pointer to the rport getting the @lpfc_nvme_ereq
947 * Driver registers this routine as it io request handler. This
948 * routine issues an fcp WQE with data from the @lpfc_nvme_fcpreq
949 * data structure to the rport indicated in @lpfc_nvme_rport.
953 * TODO: What are the failure codes.
956 lpfc_nvme_io_cmd_wqe_cmpl(struct lpfc_hba *phba, struct lpfc_iocbq *pwqeIn,
957 struct lpfc_wcqe_complete *wcqe)
959 struct lpfc_io_buf *lpfc_ncmd =
960 (struct lpfc_io_buf *)pwqeIn->context1;
961 struct lpfc_vport *vport = pwqeIn->vport;
962 struct nvmefc_fcp_req *nCmd;
963 struct nvme_fc_ersp_iu *ep;
964 struct nvme_fc_cmd_iu *cp;
965 struct lpfc_nodelist *ndlp;
966 struct lpfc_nvme_fcpreq_priv *freqpriv;
967 struct lpfc_nvme_lport *lport;
968 uint32_t code, status, idx;
969 uint16_t cid, sqhd, data;
972 /* Sanity check on return of outstanding command */
974 lpfc_printf_vlog(vport, KERN_ERR,
975 LOG_NODE | LOG_NVME_IOERR,
976 "6071 Null lpfc_ncmd pointer. No "
977 "release, skip completion\n");
981 /* Guard against abort handler being called at same time */
982 spin_lock(&lpfc_ncmd->buf_lock);
984 if (!lpfc_ncmd->nvmeCmd) {
985 spin_unlock(&lpfc_ncmd->buf_lock);
986 lpfc_printf_vlog(vport, KERN_ERR, LOG_NODE | LOG_NVME_IOERR,
987 "6066 Missing cmpl ptrs: lpfc_ncmd %p, "
989 lpfc_ncmd, lpfc_ncmd->nvmeCmd);
991 /* Release the lpfc_ncmd regardless of the missing elements. */
992 lpfc_release_nvme_buf(phba, lpfc_ncmd);
995 nCmd = lpfc_ncmd->nvmeCmd;
996 status = bf_get(lpfc_wcqe_c_status, wcqe);
998 idx = lpfc_ncmd->cur_iocbq.hba_wqidx;
999 phba->sli4_hba.hdwq[idx].nvme_cstat.io_cmpls++;
1001 if (vport->localport) {
1002 lport = (struct lpfc_nvme_lport *)vport->localport->private;
1003 if (lport && status) {
1004 if (bf_get(lpfc_wcqe_c_xb, wcqe))
1005 atomic_inc(&lport->cmpl_fcp_xb);
1006 atomic_inc(&lport->cmpl_fcp_err);
1010 lpfc_nvmeio_data(phba, "NVME FCP CMPL: xri x%x stat x%x parm x%x\n",
1011 lpfc_ncmd->cur_iocbq.sli4_xritag,
1012 status, wcqe->parameter);
1014 * Catch race where our node has transitioned, but the
1015 * transport is still transitioning.
1017 ndlp = lpfc_ncmd->ndlp;
1018 if (!ndlp || !NLP_CHK_NODE_ACT(ndlp)) {
1019 lpfc_printf_vlog(vport, KERN_ERR, LOG_NVME_IOERR,
1020 "6062 Ignoring NVME cmpl. No ndlp\n");
1024 code = bf_get(lpfc_wcqe_c_code, wcqe);
1025 if (code == CQE_CODE_NVME_ERSP) {
1026 /* For this type of CQE, we need to rebuild the rsp */
1027 ep = (struct nvme_fc_ersp_iu *)nCmd->rspaddr;
1030 * Get Command Id from cmd to plug into response. This
1031 * code is not needed in the next NVME Transport drop.
1033 cp = (struct nvme_fc_cmd_iu *)nCmd->cmdaddr;
1034 cid = cp->sqe.common.command_id;
1037 * RSN is in CQE word 2
1038 * SQHD is in CQE Word 3 bits 15:0
1039 * Cmd Specific info is in CQE Word 1
1040 * and in CQE Word 0 bits 15:0
1042 sqhd = bf_get(lpfc_wcqe_c_sqhead, wcqe);
1044 /* Now lets build the NVME ERSP IU */
1045 ep->iu_len = cpu_to_be16(8);
1046 ep->rsn = wcqe->parameter;
1047 ep->xfrd_len = cpu_to_be32(nCmd->payload_length);
1049 ptr = (uint32_t *)&ep->cqe.result.u64;
1050 *ptr++ = wcqe->total_data_placed;
1051 data = bf_get(lpfc_wcqe_c_ersp0, wcqe);
1052 *ptr = (uint32_t)data;
1053 ep->cqe.sq_head = sqhd;
1054 ep->cqe.sq_id = nCmd->sqid;
1055 ep->cqe.command_id = cid;
1058 lpfc_ncmd->status = IOSTAT_SUCCESS;
1059 lpfc_ncmd->result = 0;
1060 nCmd->rcv_rsplen = LPFC_NVME_ERSP_LEN;
1061 nCmd->transferred_length = nCmd->payload_length;
1063 lpfc_ncmd->status = (status & LPFC_IOCB_STATUS_MASK);
1064 lpfc_ncmd->result = (wcqe->parameter & IOERR_PARAM_MASK);
1066 /* For NVME, the only failure path that results in an
1067 * IO error is when the adapter rejects it. All other
1068 * conditions are a success case and resolved by the
1070 * IOSTAT_FCP_RSP_ERROR means:
1071 * 1. Length of data received doesn't match total
1072 * transfer length in WQE
1073 * 2. If the RSP payload does NOT match these cases:
1074 * a. RSP length 12/24 bytes and all zeros
1077 switch (lpfc_ncmd->status) {
1078 case IOSTAT_SUCCESS:
1079 nCmd->transferred_length = wcqe->total_data_placed;
1080 nCmd->rcv_rsplen = 0;
1083 case IOSTAT_FCP_RSP_ERROR:
1084 nCmd->transferred_length = wcqe->total_data_placed;
1085 nCmd->rcv_rsplen = wcqe->parameter;
1088 if (nCmd->rcv_rsplen == LPFC_NVME_ERSP_LEN)
1090 lpfc_printf_vlog(vport, KERN_ERR, LOG_NVME_IOERR,
1091 "6081 NVME Completion Protocol Error: "
1092 "xri %x status x%x result x%x "
1094 lpfc_ncmd->cur_iocbq.sli4_xritag,
1095 lpfc_ncmd->status, lpfc_ncmd->result,
1096 wcqe->total_data_placed);
1098 case IOSTAT_LOCAL_REJECT:
1099 /* Let fall through to set command final state. */
1100 if (lpfc_ncmd->result == IOERR_ABORT_REQUESTED)
1101 lpfc_printf_vlog(vport, KERN_INFO,
1103 "6032 Delay Aborted cmd %p "
1104 "nvme cmd %p, xri x%x, "
1107 lpfc_ncmd->cur_iocbq.sli4_xritag,
1108 bf_get(lpfc_wcqe_c_xb, wcqe));
1111 lpfc_printf_vlog(vport, KERN_INFO, LOG_NVME_IOERR,
1112 "6072 NVME Completion Error: xri %x "
1113 "status x%x result x%x placed x%x\n",
1114 lpfc_ncmd->cur_iocbq.sli4_xritag,
1115 lpfc_ncmd->status, lpfc_ncmd->result,
1116 wcqe->total_data_placed);
1117 nCmd->transferred_length = 0;
1118 nCmd->rcv_rsplen = 0;
1119 nCmd->status = NVME_SC_INTERNAL;
1123 /* pick up SLI4 exhange busy condition */
1124 if (bf_get(lpfc_wcqe_c_xb, wcqe))
1125 lpfc_ncmd->flags |= LPFC_SBUF_XBUSY;
1127 lpfc_ncmd->flags &= ~LPFC_SBUF_XBUSY;
1129 /* Update stats and complete the IO. There is
1130 * no need for dma unprep because the nvme_transport
1131 * owns the dma address.
1133 #ifdef CONFIG_SCSI_LPFC_DEBUG_FS
1134 if (lpfc_ncmd->ts_cmd_start) {
1135 lpfc_ncmd->ts_isr_cmpl = pwqeIn->isr_timestamp;
1136 lpfc_ncmd->ts_data_nvme = ktime_get_ns();
1137 phba->ktime_last_cmd = lpfc_ncmd->ts_data_nvme;
1138 lpfc_nvme_ktime(phba, lpfc_ncmd);
1140 if (phba->cpucheck_on & LPFC_CHECK_NVME_IO) {
1142 idx = lpfc_ncmd->cur_iocbq.hba_wqidx;
1143 cpu = smp_processor_id();
1144 if (cpu < LPFC_CHECK_CPU_CNT) {
1145 if (lpfc_ncmd->cpu != cpu)
1146 lpfc_printf_vlog(vport,
1147 KERN_INFO, LOG_NVME_IOERR,
1148 "6701 CPU Check cmpl: "
1149 "cpu %d expect %d\n",
1150 cpu, lpfc_ncmd->cpu);
1151 phba->sli4_hba.hdwq[idx].cpucheck_cmpl_io[cpu]++;
1156 /* NVME targets need completion held off until the abort exchange
1157 * completes unless the NVME Rport is getting unregistered.
1160 if (!(lpfc_ncmd->flags & LPFC_SBUF_XBUSY)) {
1161 freqpriv = nCmd->private;
1162 freqpriv->nvme_buf = NULL;
1163 lpfc_ncmd->nvmeCmd = NULL;
1164 spin_unlock(&lpfc_ncmd->buf_lock);
1167 spin_unlock(&lpfc_ncmd->buf_lock);
1169 /* Call release with XB=1 to queue the IO into the abort list. */
1170 lpfc_release_nvme_buf(phba, lpfc_ncmd);
1175 * lpfc_nvme_prep_io_cmd - Issue an NVME-over-FCP IO
1176 * @lpfc_pnvme: Pointer to the driver's nvme instance data
1177 * @lpfc_nvme_lport: Pointer to the driver's local port data
1178 * @lpfc_nvme_rport: Pointer to the rport getting the @lpfc_nvme_ereq
1179 * @lpfc_nvme_fcreq: IO request from nvme fc to driver.
1180 * @hw_queue_handle: Driver-returned handle in lpfc_nvme_create_queue
1182 * Driver registers this routine as it io request handler. This
1183 * routine issues an fcp WQE with data from the @lpfc_nvme_fcpreq
1184 * data structure to the rport indicated in @lpfc_nvme_rport.
1188 * TODO: What are the failure codes.
1191 lpfc_nvme_prep_io_cmd(struct lpfc_vport *vport,
1192 struct lpfc_io_buf *lpfc_ncmd,
1193 struct lpfc_nodelist *pnode,
1194 struct lpfc_fc4_ctrl_stat *cstat)
1196 struct lpfc_hba *phba = vport->phba;
1197 struct nvmefc_fcp_req *nCmd = lpfc_ncmd->nvmeCmd;
1198 struct lpfc_iocbq *pwqeq = &(lpfc_ncmd->cur_iocbq);
1199 union lpfc_wqe128 *wqe = &pwqeq->wqe;
1202 if (!NLP_CHK_NODE_ACT(pnode))
1206 * There are three possibilities here - use scatter-gather segment, use
1207 * the single mapping, or neither.
1210 if (nCmd->io_dir == NVMEFC_FCP_WRITE) {
1211 /* From the iwrite template, initialize words 7 - 11 */
1212 memcpy(&wqe->words[7],
1213 &lpfc_iwrite_cmd_template.words[7],
1214 sizeof(uint32_t) * 5);
1217 wqe->fcp_iwrite.total_xfer_len = nCmd->payload_length;
1220 if ((phba->cfg_nvme_enable_fb) &&
1221 (pnode->nlp_flag & NLP_FIRSTBURST)) {
1222 req_len = lpfc_ncmd->nvmeCmd->payload_length;
1223 if (req_len < pnode->nvme_fb_size)
1224 wqe->fcp_iwrite.initial_xfer_len =
1227 wqe->fcp_iwrite.initial_xfer_len =
1228 pnode->nvme_fb_size;
1230 wqe->fcp_iwrite.initial_xfer_len = 0;
1232 cstat->output_requests++;
1234 /* From the iread template, initialize words 7 - 11 */
1235 memcpy(&wqe->words[7],
1236 &lpfc_iread_cmd_template.words[7],
1237 sizeof(uint32_t) * 5);
1240 wqe->fcp_iread.total_xfer_len = nCmd->payload_length;
1243 wqe->fcp_iread.rsrvd5 = 0;
1245 cstat->input_requests++;
1248 /* From the icmnd template, initialize words 4 - 11 */
1249 memcpy(&wqe->words[4], &lpfc_icmnd_cmd_template.words[4],
1250 sizeof(uint32_t) * 8);
1251 cstat->control_requests++;
1254 * Finish initializing those WQE fields that are independent
1255 * of the nvme_cmnd request_buffer
1259 bf_set(payload_offset_len, &wqe->fcp_icmd,
1260 (nCmd->rsplen + nCmd->cmdlen));
1263 bf_set(wqe_ctxt_tag, &wqe->generic.wqe_com,
1264 phba->sli4_hba.rpi_ids[pnode->nlp_rpi]);
1265 bf_set(wqe_xri_tag, &wqe->generic.wqe_com, pwqeq->sli4_xritag);
1268 wqe->generic.wqe_com.abort_tag = pwqeq->iotag;
1271 bf_set(wqe_reqtag, &wqe->generic.wqe_com, pwqeq->iotag);
1273 /* Words 13 14 15 are for PBDE support */
1275 pwqeq->vport = vport;
1281 * lpfc_nvme_prep_io_dma - Issue an NVME-over-FCP IO
1282 * @lpfc_pnvme: Pointer to the driver's nvme instance data
1283 * @lpfc_nvme_lport: Pointer to the driver's local port data
1284 * @lpfc_nvme_rport: Pointer to the rport getting the @lpfc_nvme_ereq
1285 * @lpfc_nvme_fcreq: IO request from nvme fc to driver.
1286 * @hw_queue_handle: Driver-returned handle in lpfc_nvme_create_queue
1288 * Driver registers this routine as it io request handler. This
1289 * routine issues an fcp WQE with data from the @lpfc_nvme_fcpreq
1290 * data structure to the rport indicated in @lpfc_nvme_rport.
1294 * TODO: What are the failure codes.
1297 lpfc_nvme_prep_io_dma(struct lpfc_vport *vport,
1298 struct lpfc_io_buf *lpfc_ncmd)
1300 struct lpfc_hba *phba = vport->phba;
1301 struct nvmefc_fcp_req *nCmd = lpfc_ncmd->nvmeCmd;
1302 union lpfc_wqe128 *wqe = &lpfc_ncmd->cur_iocbq.wqe;
1303 struct sli4_sge *sgl = lpfc_ncmd->dma_sgl;
1304 struct scatterlist *data_sg;
1305 struct sli4_sge *first_data_sgl;
1306 struct ulp_bde64 *bde;
1307 dma_addr_t physaddr;
1308 uint32_t num_bde = 0;
1310 uint32_t dma_offset = 0;
1313 /* Fix up the command and response DMA stuff. */
1314 lpfc_nvme_adj_fcp_sgls(vport, lpfc_ncmd, nCmd);
1317 * There are three possibilities here - use scatter-gather segment, use
1318 * the single mapping, or neither.
1322 * Jump over the cmd and rsp SGEs. The fix routine
1323 * has already adjusted for this.
1327 first_data_sgl = sgl;
1328 lpfc_ncmd->seg_cnt = nCmd->sg_cnt;
1329 if (lpfc_ncmd->seg_cnt > lpfc_nvme_template.max_sgl_segments) {
1330 lpfc_printf_log(phba, KERN_ERR, LOG_NVME_IOERR,
1331 "6058 Too many sg segments from "
1332 "NVME Transport. Max %d, "
1333 "nvmeIO sg_cnt %d\n",
1334 phba->cfg_nvme_seg_cnt + 1,
1335 lpfc_ncmd->seg_cnt);
1336 lpfc_ncmd->seg_cnt = 0;
1341 * The driver established a maximum scatter-gather segment count
1342 * during probe that limits the number of sg elements in any
1343 * single nvme command. Just run through the seg_cnt and format
1346 nseg = nCmd->sg_cnt;
1347 data_sg = nCmd->first_sgl;
1348 for (i = 0; i < nseg; i++) {
1349 if (data_sg == NULL) {
1350 lpfc_printf_log(phba, KERN_ERR, LOG_NVME_IOERR,
1351 "6059 dptr err %d, nseg %d\n",
1353 lpfc_ncmd->seg_cnt = 0;
1356 physaddr = data_sg->dma_address;
1357 dma_len = data_sg->length;
1358 sgl->addr_lo = cpu_to_le32(putPaddrLow(physaddr));
1359 sgl->addr_hi = cpu_to_le32(putPaddrHigh(physaddr));
1360 sgl->word2 = le32_to_cpu(sgl->word2);
1361 if ((num_bde + 1) == nseg)
1362 bf_set(lpfc_sli4_sge_last, sgl, 1);
1364 bf_set(lpfc_sli4_sge_last, sgl, 0);
1365 bf_set(lpfc_sli4_sge_offset, sgl, dma_offset);
1366 bf_set(lpfc_sli4_sge_type, sgl, LPFC_SGE_TYPE_DATA);
1367 sgl->word2 = cpu_to_le32(sgl->word2);
1368 sgl->sge_len = cpu_to_le32(dma_len);
1370 dma_offset += dma_len;
1371 data_sg = sg_next(data_sg);
1374 if (phba->cfg_enable_pbde) {
1375 /* Use PBDE support for first SGL only, offset == 0 */
1377 bde = (struct ulp_bde64 *)
1379 bde->addrLow = first_data_sgl->addr_lo;
1380 bde->addrHigh = first_data_sgl->addr_hi;
1381 bde->tus.f.bdeSize =
1382 le32_to_cpu(first_data_sgl->sge_len);
1383 bde->tus.f.bdeFlags = BUFF_TYPE_BDE_64;
1384 bde->tus.w = cpu_to_le32(bde->tus.w);
1385 /* wqe_pbde is 1 in template */
1387 memset(&wqe->words[13], 0, (sizeof(uint32_t) * 3));
1388 bf_set(wqe_pbde, &wqe->generic.wqe_com, 0);
1392 lpfc_ncmd->seg_cnt = 0;
1394 /* For this clause to be valid, the payload_length
1395 * and sg_cnt must zero.
1397 if (nCmd->payload_length != 0) {
1398 lpfc_printf_log(phba, KERN_ERR, LOG_NVME_IOERR,
1399 "6063 NVME DMA Prep Err: sg_cnt %d "
1400 "payload_length x%x\n",
1401 nCmd->sg_cnt, nCmd->payload_length);
1409 * lpfc_nvme_fcp_io_submit - Issue an NVME-over-FCP IO
1410 * @lpfc_pnvme: Pointer to the driver's nvme instance data
1411 * @lpfc_nvme_lport: Pointer to the driver's local port data
1412 * @lpfc_nvme_rport: Pointer to the rport getting the @lpfc_nvme_ereq
1413 * @lpfc_nvme_fcreq: IO request from nvme fc to driver.
1414 * @hw_queue_handle: Driver-returned handle in lpfc_nvme_create_queue
1416 * Driver registers this routine as it io request handler. This
1417 * routine issues an fcp WQE with data from the @lpfc_nvme_fcpreq
1418 * data structure to the rport
1419 indicated in @lpfc_nvme_rport.
1423 * TODO: What are the failure codes.
1426 lpfc_nvme_fcp_io_submit(struct nvme_fc_local_port *pnvme_lport,
1427 struct nvme_fc_remote_port *pnvme_rport,
1428 void *hw_queue_handle,
1429 struct nvmefc_fcp_req *pnvme_fcreq)
1434 struct lpfc_nvme_lport *lport;
1435 struct lpfc_fc4_ctrl_stat *cstat;
1436 struct lpfc_vport *vport;
1437 struct lpfc_hba *phba;
1438 struct lpfc_nodelist *ndlp;
1439 struct lpfc_io_buf *lpfc_ncmd;
1440 struct lpfc_nvme_rport *rport;
1441 struct lpfc_nvme_qhandle *lpfc_queue_info;
1442 struct lpfc_nvme_fcpreq_priv *freqpriv;
1443 struct nvme_common_command *sqe;
1444 #ifdef CONFIG_SCSI_LPFC_DEBUG_FS
1448 /* Validate pointers. LLDD fault handling with transport does
1449 * have timing races.
1451 lport = (struct lpfc_nvme_lport *)pnvme_lport->private;
1452 if (unlikely(!lport)) {
1457 vport = lport->vport;
1459 if (unlikely(!hw_queue_handle)) {
1460 lpfc_printf_vlog(vport, KERN_INFO, LOG_NVME_IOERR,
1461 "6117 Fail IO, NULL hw_queue_handle\n");
1462 atomic_inc(&lport->xmt_fcp_err);
1469 if (vport->load_flag & FC_UNLOADING) {
1474 if (vport->load_flag & FC_UNLOADING) {
1475 lpfc_printf_vlog(vport, KERN_INFO, LOG_NVME_IOERR,
1476 "6124 Fail IO, Driver unload\n");
1477 atomic_inc(&lport->xmt_fcp_err);
1482 freqpriv = pnvme_fcreq->private;
1483 if (unlikely(!freqpriv)) {
1484 lpfc_printf_vlog(vport, KERN_INFO, LOG_NVME_IOERR,
1485 "6158 Fail IO, NULL request data\n");
1486 atomic_inc(&lport->xmt_fcp_err);
1491 #ifdef CONFIG_SCSI_LPFC_DEBUG_FS
1493 start = ktime_get_ns();
1495 rport = (struct lpfc_nvme_rport *)pnvme_rport->private;
1496 lpfc_queue_info = (struct lpfc_nvme_qhandle *)hw_queue_handle;
1499 * Catch race where our node has transitioned, but the
1500 * transport is still transitioning.
1503 if (!ndlp || !NLP_CHK_NODE_ACT(ndlp)) {
1504 lpfc_printf_vlog(vport, KERN_INFO, LOG_NODE | LOG_NVME_IOERR,
1505 "6053 Fail IO, ndlp not ready: rport %p "
1506 "ndlp %p, DID x%06x\n",
1507 rport, ndlp, pnvme_rport->port_id);
1508 atomic_inc(&lport->xmt_fcp_err);
1513 /* The remote node has to be a mapped target or it's an error. */
1514 if ((ndlp->nlp_type & NLP_NVME_TARGET) &&
1515 (ndlp->nlp_state != NLP_STE_MAPPED_NODE)) {
1516 lpfc_printf_vlog(vport, KERN_INFO, LOG_NODE | LOG_NVME_IOERR,
1517 "6036 Fail IO, DID x%06x not ready for "
1518 "IO. State x%x, Type x%x Flg x%x\n",
1519 pnvme_rport->port_id,
1520 ndlp->nlp_state, ndlp->nlp_type,
1521 ndlp->upcall_flags);
1522 atomic_inc(&lport->xmt_fcp_bad_ndlp);
1528 /* Currently only NVME Keep alive commands should be expedited
1529 * if the driver runs out of a resource. These should only be
1530 * issued on the admin queue, qidx 0
1532 if (!lpfc_queue_info->qidx && !pnvme_fcreq->sg_cnt) {
1533 sqe = &((struct nvme_fc_cmd_iu *)
1534 pnvme_fcreq->cmdaddr)->sqe.common;
1535 if (sqe->opcode == nvme_admin_keep_alive)
1539 /* The node is shared with FCP IO, make sure the IO pending count does
1540 * not exceed the programmed depth.
1542 if (lpfc_ndlp_check_qdepth(phba, ndlp)) {
1543 if ((atomic_read(&ndlp->cmd_pending) >= ndlp->cmd_qdepth) &&
1545 lpfc_printf_vlog(vport, KERN_INFO, LOG_NVME_IOERR,
1546 "6174 Fail IO, ndlp qdepth exceeded: "
1547 "idx %d DID %x pend %d qdepth %d\n",
1548 lpfc_queue_info->index, ndlp->nlp_DID,
1549 atomic_read(&ndlp->cmd_pending),
1551 atomic_inc(&lport->xmt_fcp_qdepth);
1557 /* Lookup Hardware Queue index based on fcp_io_sched module parameter */
1558 if (phba->cfg_fcp_io_sched == LPFC_FCP_SCHED_BY_HDWQ) {
1559 idx = lpfc_queue_info->index;
1561 cpu = smp_processor_id();
1562 idx = phba->sli4_hba.cpu_map[cpu].hdwq;
1565 lpfc_ncmd = lpfc_get_nvme_buf(phba, ndlp, idx, expedite);
1566 if (lpfc_ncmd == NULL) {
1567 atomic_inc(&lport->xmt_fcp_noxri);
1568 lpfc_printf_vlog(vport, KERN_INFO, LOG_NVME_IOERR,
1569 "6065 Fail IO, driver buffer pool is empty: "
1571 lpfc_queue_info->index, ndlp->nlp_DID);
1575 #ifdef CONFIG_SCSI_LPFC_DEBUG_FS
1577 lpfc_ncmd->ts_cmd_start = start;
1578 lpfc_ncmd->ts_last_cmd = phba->ktime_last_cmd;
1580 lpfc_ncmd->ts_cmd_start = 0;
1585 * Store the data needed by the driver to issue, abort, and complete
1587 * Do not let the IO hang out forever. There is no midlayer issuing
1588 * an abort so inform the FW of the maximum IO pending time.
1590 freqpriv->nvme_buf = lpfc_ncmd;
1591 lpfc_ncmd->nvmeCmd = pnvme_fcreq;
1592 lpfc_ncmd->ndlp = ndlp;
1593 lpfc_ncmd->qidx = lpfc_queue_info->qidx;
1596 * Issue the IO on the WQ indicated by index in the hw_queue_handle.
1597 * This identfier was create in our hardware queue create callback
1598 * routine. The driver now is dependent on the IO queue steering from
1599 * the transport. We are trusting the upper NVME layers know which
1600 * index to use and that they have affinitized a CPU to this hardware
1601 * queue. A hardware queue maps to a driver MSI-X vector/EQ/CQ/WQ.
1603 lpfc_ncmd->cur_iocbq.hba_wqidx = idx;
1604 cstat = &phba->sli4_hba.hdwq[idx].nvme_cstat;
1606 lpfc_nvme_prep_io_cmd(vport, lpfc_ncmd, ndlp, cstat);
1607 ret = lpfc_nvme_prep_io_dma(vport, lpfc_ncmd);
1609 lpfc_printf_vlog(vport, KERN_INFO, LOG_NVME_IOERR,
1610 "6175 Fail IO, Prep DMA: "
1612 lpfc_queue_info->index, ndlp->nlp_DID);
1613 atomic_inc(&lport->xmt_fcp_err);
1615 goto out_free_nvme_buf;
1618 lpfc_nvmeio_data(phba, "NVME FCP XMIT: xri x%x idx %d to %06x\n",
1619 lpfc_ncmd->cur_iocbq.sli4_xritag,
1620 lpfc_queue_info->index, ndlp->nlp_DID);
1622 ret = lpfc_sli4_issue_wqe(phba, lpfc_ncmd->hdwq, &lpfc_ncmd->cur_iocbq);
1624 atomic_inc(&lport->xmt_fcp_wqerr);
1625 lpfc_printf_vlog(vport, KERN_INFO, LOG_NVME_IOERR,
1626 "6113 Fail IO, Could not issue WQE err %x "
1627 "sid: x%x did: x%x oxid: x%x\n",
1628 ret, vport->fc_myDID, ndlp->nlp_DID,
1629 lpfc_ncmd->cur_iocbq.sli4_xritag);
1630 goto out_free_nvme_buf;
1633 if (phba->cfg_xri_rebalancing)
1634 lpfc_keep_pvt_pool_above_lowwm(phba, lpfc_ncmd->hdwq_no);
1636 #ifdef CONFIG_SCSI_LPFC_DEBUG_FS
1637 if (lpfc_ncmd->ts_cmd_start)
1638 lpfc_ncmd->ts_cmd_wqput = ktime_get_ns();
1640 if (phba->cpucheck_on & LPFC_CHECK_NVME_IO) {
1641 cpu = smp_processor_id();
1642 if (cpu < LPFC_CHECK_CPU_CNT) {
1643 lpfc_ncmd->cpu = cpu;
1645 lpfc_printf_vlog(vport,
1646 KERN_INFO, LOG_NVME_IOERR,
1647 "6702 CPU Check cmd: "
1650 lpfc_queue_info->index);
1651 phba->sli4_hba.hdwq[idx].cpucheck_xmt_io[cpu]++;
1658 if (lpfc_ncmd->nvmeCmd->sg_cnt) {
1659 if (lpfc_ncmd->nvmeCmd->io_dir == NVMEFC_FCP_WRITE)
1660 cstat->output_requests--;
1662 cstat->input_requests--;
1664 cstat->control_requests--;
1665 lpfc_release_nvme_buf(phba, lpfc_ncmd);
1671 * lpfc_nvme_abort_fcreq_cmpl - Complete an NVME FCP abort request.
1672 * @phba: Pointer to HBA context object
1673 * @cmdiocb: Pointer to command iocb object.
1674 * @rspiocb: Pointer to response iocb object.
1676 * This is the callback function for any NVME FCP IO that was aborted.
1682 lpfc_nvme_abort_fcreq_cmpl(struct lpfc_hba *phba, struct lpfc_iocbq *cmdiocb,
1683 struct lpfc_wcqe_complete *abts_cmpl)
1685 lpfc_printf_log(phba, KERN_INFO, LOG_NVME,
1686 "6145 ABORT_XRI_CN completing on rpi x%x "
1687 "original iotag x%x, abort cmd iotag x%x "
1688 "req_tag x%x, status x%x, hwstatus x%x\n",
1689 cmdiocb->iocb.un.acxri.abortContextTag,
1690 cmdiocb->iocb.un.acxri.abortIoTag,
1692 bf_get(lpfc_wcqe_c_request_tag, abts_cmpl),
1693 bf_get(lpfc_wcqe_c_status, abts_cmpl),
1694 bf_get(lpfc_wcqe_c_hw_status, abts_cmpl));
1695 lpfc_sli_release_iocbq(phba, cmdiocb);
1699 * lpfc_nvme_fcp_abort - Issue an NVME-over-FCP ABTS
1700 * @lpfc_pnvme: Pointer to the driver's nvme instance data
1701 * @lpfc_nvme_lport: Pointer to the driver's local port data
1702 * @lpfc_nvme_rport: Pointer to the rport getting the @lpfc_nvme_ereq
1703 * @lpfc_nvme_fcreq: IO request from nvme fc to driver.
1704 * @hw_queue_handle: Driver-returned handle in lpfc_nvme_create_queue
1706 * Driver registers this routine as its nvme request io abort handler. This
1707 * routine issues an fcp Abort WQE with data from the @lpfc_nvme_fcpreq
1708 * data structure to the rport indicated in @lpfc_nvme_rport. This routine
1709 * is executed asynchronously - one the target is validated as "MAPPED" and
1710 * ready for IO, the driver issues the abort request and returns.
1716 lpfc_nvme_fcp_abort(struct nvme_fc_local_port *pnvme_lport,
1717 struct nvme_fc_remote_port *pnvme_rport,
1718 void *hw_queue_handle,
1719 struct nvmefc_fcp_req *pnvme_fcreq)
1721 struct lpfc_nvme_lport *lport;
1722 struct lpfc_vport *vport;
1723 struct lpfc_hba *phba;
1724 struct lpfc_io_buf *lpfc_nbuf;
1725 struct lpfc_iocbq *abts_buf;
1726 struct lpfc_iocbq *nvmereq_wqe;
1727 struct lpfc_nvme_fcpreq_priv *freqpriv;
1728 union lpfc_wqe128 *abts_wqe;
1729 unsigned long flags;
1732 /* Validate pointers. LLDD fault handling with transport does
1733 * have timing races.
1735 lport = (struct lpfc_nvme_lport *)pnvme_lport->private;
1736 if (unlikely(!lport))
1739 vport = lport->vport;
1741 if (unlikely(!hw_queue_handle)) {
1742 lpfc_printf_vlog(vport, KERN_INFO, LOG_NVME_ABTS,
1743 "6129 Fail Abort, HW Queue Handle NULL.\n");
1748 freqpriv = pnvme_fcreq->private;
1750 if (unlikely(!freqpriv))
1752 if (vport->load_flag & FC_UNLOADING)
1755 /* Announce entry to new IO submit field. */
1756 lpfc_printf_vlog(vport, KERN_INFO, LOG_NVME_ABTS,
1757 "6002 Abort Request to rport DID x%06x "
1758 "for nvme_fc_req %p\n",
1759 pnvme_rport->port_id,
1762 /* If the hba is getting reset, this flag is set. It is
1763 * cleared when the reset is complete and rings reestablished.
1765 spin_lock_irqsave(&phba->hbalock, flags);
1766 /* driver queued commands are in process of being flushed */
1767 if (phba->hba_flag & HBA_NVME_IOQ_FLUSH) {
1768 spin_unlock_irqrestore(&phba->hbalock, flags);
1769 lpfc_printf_vlog(vport, KERN_ERR, LOG_NVME_ABTS,
1770 "6139 Driver in reset cleanup - flushing "
1771 "NVME Req now. hba_flag x%x\n",
1776 lpfc_nbuf = freqpriv->nvme_buf;
1778 spin_unlock_irqrestore(&phba->hbalock, flags);
1779 lpfc_printf_vlog(vport, KERN_ERR, LOG_NVME_ABTS,
1780 "6140 NVME IO req has no matching lpfc nvme "
1781 "io buffer. Skipping abort req.\n");
1783 } else if (!lpfc_nbuf->nvmeCmd) {
1784 spin_unlock_irqrestore(&phba->hbalock, flags);
1785 lpfc_printf_vlog(vport, KERN_ERR, LOG_NVME_ABTS,
1786 "6141 lpfc NVME IO req has no nvme_fcreq "
1787 "io buffer. Skipping abort req.\n");
1790 nvmereq_wqe = &lpfc_nbuf->cur_iocbq;
1792 /* Guard against IO completion being called at same time */
1793 spin_lock(&lpfc_nbuf->buf_lock);
1796 * The lpfc_nbuf and the mapped nvme_fcreq in the driver's
1797 * state must match the nvme_fcreq passed by the nvme
1798 * transport. If they don't match, it is likely the driver
1799 * has already completed the NVME IO and the nvme transport
1800 * has not seen it yet.
1802 if (lpfc_nbuf->nvmeCmd != pnvme_fcreq) {
1803 lpfc_printf_vlog(vport, KERN_ERR, LOG_NVME_ABTS,
1804 "6143 NVME req mismatch: "
1805 "lpfc_nbuf %p nvmeCmd %p, "
1806 "pnvme_fcreq %p. Skipping Abort xri x%x\n",
1807 lpfc_nbuf, lpfc_nbuf->nvmeCmd,
1808 pnvme_fcreq, nvmereq_wqe->sli4_xritag);
1812 /* Don't abort IOs no longer on the pending queue. */
1813 if (!(nvmereq_wqe->iocb_flag & LPFC_IO_ON_TXCMPLQ)) {
1814 lpfc_printf_vlog(vport, KERN_ERR, LOG_NVME_ABTS,
1815 "6142 NVME IO req %p not queued - skipping "
1816 "abort req xri x%x\n",
1817 pnvme_fcreq, nvmereq_wqe->sli4_xritag);
1821 atomic_inc(&lport->xmt_fcp_abort);
1822 lpfc_nvmeio_data(phba, "NVME FCP ABORT: xri x%x idx %d to %06x\n",
1823 nvmereq_wqe->sli4_xritag,
1824 nvmereq_wqe->hba_wqidx, pnvme_rport->port_id);
1826 /* Outstanding abort is in progress */
1827 if (nvmereq_wqe->iocb_flag & LPFC_DRIVER_ABORTED) {
1828 lpfc_printf_vlog(vport, KERN_ERR, LOG_NVME_ABTS,
1829 "6144 Outstanding NVME I/O Abort Request "
1830 "still pending on nvme_fcreq %p, "
1831 "lpfc_ncmd %p xri x%x\n",
1832 pnvme_fcreq, lpfc_nbuf,
1833 nvmereq_wqe->sli4_xritag);
1837 abts_buf = __lpfc_sli_get_iocbq(phba);
1839 lpfc_printf_vlog(vport, KERN_ERR, LOG_NVME_ABTS,
1840 "6136 No available abort wqes. Skipping "
1841 "Abts req for nvme_fcreq %p xri x%x\n",
1842 pnvme_fcreq, nvmereq_wqe->sli4_xritag);
1846 /* Ready - mark outstanding as aborted by driver. */
1847 nvmereq_wqe->iocb_flag |= LPFC_DRIVER_ABORTED;
1849 /* Complete prepping the abort wqe and issue to the FW. */
1850 abts_wqe = &abts_buf->wqe;
1852 /* WQEs are reused. Clear stale data and set key fields to
1853 * zero like ia, iaab, iaar, xri_tag, and ctxt_tag.
1855 memset(abts_wqe, 0, sizeof(union lpfc_wqe));
1856 bf_set(abort_cmd_criteria, &abts_wqe->abort_cmd, T_XRI_TAG);
1859 bf_set(wqe_cmnd, &abts_wqe->abort_cmd.wqe_com, CMD_ABORT_XRI_CX);
1860 bf_set(wqe_class, &abts_wqe->abort_cmd.wqe_com,
1861 nvmereq_wqe->iocb.ulpClass);
1863 /* word 8 - tell the FW to abort the IO associated with this
1864 * outstanding exchange ID.
1866 abts_wqe->abort_cmd.wqe_com.abort_tag = nvmereq_wqe->sli4_xritag;
1868 /* word 9 - this is the iotag for the abts_wqe completion. */
1869 bf_set(wqe_reqtag, &abts_wqe->abort_cmd.wqe_com,
1873 bf_set(wqe_qosd, &abts_wqe->abort_cmd.wqe_com, 1);
1874 bf_set(wqe_lenloc, &abts_wqe->abort_cmd.wqe_com, LPFC_WQE_LENLOC_NONE);
1877 bf_set(wqe_cmd_type, &abts_wqe->abort_cmd.wqe_com, OTHER_COMMAND);
1878 bf_set(wqe_wqec, &abts_wqe->abort_cmd.wqe_com, 1);
1879 bf_set(wqe_cqid, &abts_wqe->abort_cmd.wqe_com, LPFC_WQE_CQ_ID_DEFAULT);
1881 /* ABTS WQE must go to the same WQ as the WQE to be aborted */
1882 abts_buf->iocb_flag |= LPFC_IO_NVME;
1883 abts_buf->hba_wqidx = nvmereq_wqe->hba_wqidx;
1884 abts_buf->vport = vport;
1885 abts_buf->wqe_cmpl = lpfc_nvme_abort_fcreq_cmpl;
1886 ret_val = lpfc_sli4_issue_wqe(phba, lpfc_nbuf->hdwq, abts_buf);
1887 spin_unlock(&lpfc_nbuf->buf_lock);
1888 spin_unlock_irqrestore(&phba->hbalock, flags);
1890 lpfc_printf_vlog(vport, KERN_ERR, LOG_NVME_ABTS,
1891 "6137 Failed abts issue_wqe with status x%x "
1892 "for nvme_fcreq %p.\n",
1893 ret_val, pnvme_fcreq);
1894 lpfc_sli_release_iocbq(phba, abts_buf);
1898 lpfc_printf_vlog(vport, KERN_INFO, LOG_NVME_ABTS,
1899 "6138 Transport Abort NVME Request Issued for "
1900 "ox_id x%x on reqtag x%x\n",
1901 nvmereq_wqe->sli4_xritag,
1906 spin_unlock(&lpfc_nbuf->buf_lock);
1907 spin_unlock_irqrestore(&phba->hbalock, flags);
1911 /* Declare and initialization an instance of the FC NVME template. */
1912 static struct nvme_fc_port_template lpfc_nvme_template = {
1913 /* initiator-based functions */
1914 .localport_delete = lpfc_nvme_localport_delete,
1915 .remoteport_delete = lpfc_nvme_remoteport_delete,
1916 .create_queue = lpfc_nvme_create_queue,
1917 .delete_queue = lpfc_nvme_delete_queue,
1918 .ls_req = lpfc_nvme_ls_req,
1919 .fcp_io = lpfc_nvme_fcp_io_submit,
1920 .ls_abort = lpfc_nvme_ls_abort,
1921 .fcp_abort = lpfc_nvme_fcp_abort,
1924 .max_sgl_segments = LPFC_NVME_DEFAULT_SEGS,
1925 .max_dif_sgl_segments = LPFC_NVME_DEFAULT_SEGS,
1926 .dma_boundary = 0xFFFFFFFF,
1928 /* Sizes of additional private data for data structures.
1929 * No use for the last two sizes at this time.
1931 .local_priv_sz = sizeof(struct lpfc_nvme_lport),
1932 .remote_priv_sz = sizeof(struct lpfc_nvme_rport),
1933 .lsrqst_priv_sz = 0,
1934 .fcprqst_priv_sz = sizeof(struct lpfc_nvme_fcpreq_priv),
1938 * lpfc_get_nvme_buf - Get a nvme buffer from io_buf_list of the HBA
1939 * @phba: The HBA for which this call is being executed.
1941 * This routine removes a nvme buffer from head of @hdwq io_buf_list
1942 * and returns to caller.
1946 * Pointer to lpfc_nvme_buf - Success
1948 static struct lpfc_io_buf *
1949 lpfc_get_nvme_buf(struct lpfc_hba *phba, struct lpfc_nodelist *ndlp,
1950 int idx, int expedite)
1952 struct lpfc_io_buf *lpfc_ncmd;
1953 struct lpfc_sli4_hdw_queue *qp;
1954 struct sli4_sge *sgl;
1955 struct lpfc_iocbq *pwqeq;
1956 union lpfc_wqe128 *wqe;
1958 lpfc_ncmd = lpfc_get_io_buf(phba, NULL, idx, expedite);
1961 pwqeq = &(lpfc_ncmd->cur_iocbq);
1964 /* Setup key fields in buffer that may have been changed
1965 * if other protocols used this buffer.
1967 pwqeq->iocb_flag = LPFC_IO_NVME;
1968 pwqeq->wqe_cmpl = lpfc_nvme_io_cmd_wqe_cmpl;
1969 lpfc_ncmd->start_time = jiffies;
1970 lpfc_ncmd->flags = 0;
1972 /* Rsp SGE will be filled in when we rcv an IO
1973 * from the NVME Layer to be sent.
1974 * The cmd is going to be embedded so we need a SKIP SGE.
1976 sgl = lpfc_ncmd->dma_sgl;
1977 bf_set(lpfc_sli4_sge_type, sgl, LPFC_SGE_TYPE_SKIP);
1978 bf_set(lpfc_sli4_sge_last, sgl, 0);
1979 sgl->word2 = cpu_to_le32(sgl->word2);
1980 /* Fill in word 3 / sgl_len during cmd submission */
1982 /* Initialize WQE */
1983 memset(wqe, 0, sizeof(union lpfc_wqe));
1985 if (lpfc_ndlp_check_qdepth(phba, ndlp)) {
1986 atomic_inc(&ndlp->cmd_pending);
1987 lpfc_ncmd->flags |= LPFC_SBUF_BUMP_QDEPTH;
1991 qp = &phba->sli4_hba.hdwq[idx];
1992 qp->empty_io_bufs++;
1999 * lpfc_release_nvme_buf: Return a nvme buffer back to hba nvme buf list.
2000 * @phba: The Hba for which this call is being executed.
2001 * @lpfc_ncmd: The nvme buffer which is being released.
2003 * This routine releases @lpfc_ncmd nvme buffer by adding it to tail of @phba
2004 * lpfc_io_buf_list list. For SLI4 XRI's are tied to the nvme buffer
2005 * and cannot be reused for at least RA_TOV amount of time if it was
2009 lpfc_release_nvme_buf(struct lpfc_hba *phba, struct lpfc_io_buf *lpfc_ncmd)
2011 struct lpfc_sli4_hdw_queue *qp;
2012 unsigned long iflag = 0;
2014 if ((lpfc_ncmd->flags & LPFC_SBUF_BUMP_QDEPTH) && lpfc_ncmd->ndlp)
2015 atomic_dec(&lpfc_ncmd->ndlp->cmd_pending);
2017 lpfc_ncmd->ndlp = NULL;
2018 lpfc_ncmd->flags &= ~LPFC_SBUF_BUMP_QDEPTH;
2020 qp = lpfc_ncmd->hdwq;
2021 if (lpfc_ncmd->flags & LPFC_SBUF_XBUSY) {
2022 lpfc_printf_log(phba, KERN_INFO, LOG_NVME_ABTS,
2023 "6310 XB release deferred for "
2024 "ox_id x%x on reqtag x%x\n",
2025 lpfc_ncmd->cur_iocbq.sli4_xritag,
2026 lpfc_ncmd->cur_iocbq.iotag);
2028 spin_lock_irqsave(&qp->abts_nvme_buf_list_lock, iflag);
2029 list_add_tail(&lpfc_ncmd->list,
2030 &qp->lpfc_abts_nvme_buf_list);
2031 qp->abts_nvme_io_bufs++;
2032 spin_unlock_irqrestore(&qp->abts_nvme_buf_list_lock, iflag);
2034 lpfc_release_io_buf(phba, (struct lpfc_io_buf *)lpfc_ncmd, qp);
2038 * lpfc_nvme_create_localport - Create/Bind an nvme localport instance.
2039 * @pvport - the lpfc_vport instance requesting a localport.
2041 * This routine is invoked to create an nvme localport instance to bind
2042 * to the nvme_fc_transport. It is called once during driver load
2043 * like lpfc_create_shost after all other services are initialized.
2044 * It requires a vport, vpi, and wwns at call time. Other localport
2045 * parameters are modified as the driver's FCID and the Fabric WWN
2050 * -ENOMEM - no heap memory available
2051 * other values - from nvme registration upcall
2054 lpfc_nvme_create_localport(struct lpfc_vport *vport)
2057 struct lpfc_hba *phba = vport->phba;
2058 struct nvme_fc_port_info nfcp_info;
2059 struct nvme_fc_local_port *localport;
2060 struct lpfc_nvme_lport *lport;
2062 /* Initialize this localport instance. The vport wwn usage ensures
2063 * that NPIV is accounted for.
2065 memset(&nfcp_info, 0, sizeof(struct nvme_fc_port_info));
2066 nfcp_info.port_role = FC_PORT_ROLE_NVME_INITIATOR;
2067 nfcp_info.node_name = wwn_to_u64(vport->fc_nodename.u.wwn);
2068 nfcp_info.port_name = wwn_to_u64(vport->fc_portname.u.wwn);
2070 /* We need to tell the transport layer + 1 because it takes page
2071 * alignment into account. When space for the SGL is allocated we
2072 * allocate + 3, one for cmd, one for rsp and one for this alignment
2074 lpfc_nvme_template.max_sgl_segments = phba->cfg_nvme_seg_cnt + 1;
2076 /* Advertise how many hw queues we support based on fcp_io_sched */
2077 if (phba->cfg_fcp_io_sched == LPFC_FCP_SCHED_BY_HDWQ)
2078 lpfc_nvme_template.max_hw_queues = phba->cfg_hdw_queue;
2080 lpfc_nvme_template.max_hw_queues =
2081 phba->sli4_hba.num_present_cpu;
2083 /* localport is allocated from the stack, but the registration
2084 * call allocates heap memory as well as the private area.
2086 #if (IS_ENABLED(CONFIG_NVME_FC))
2087 ret = nvme_fc_register_localport(&nfcp_info, &lpfc_nvme_template,
2088 &vport->phba->pcidev->dev, &localport);
2093 lpfc_printf_vlog(vport, KERN_INFO, LOG_NVME | LOG_NVME_DISC,
2094 "6005 Successfully registered local "
2095 "NVME port num %d, localP %p, private %p, "
2097 localport->port_num, localport,
2099 lpfc_nvme_template.max_sgl_segments);
2101 /* Private is our lport size declared in the template. */
2102 lport = (struct lpfc_nvme_lport *)localport->private;
2103 vport->localport = localport;
2104 lport->vport = vport;
2105 vport->nvmei_support = 1;
2107 atomic_set(&lport->xmt_fcp_noxri, 0);
2108 atomic_set(&lport->xmt_fcp_bad_ndlp, 0);
2109 atomic_set(&lport->xmt_fcp_qdepth, 0);
2110 atomic_set(&lport->xmt_fcp_err, 0);
2111 atomic_set(&lport->xmt_fcp_wqerr, 0);
2112 atomic_set(&lport->xmt_fcp_abort, 0);
2113 atomic_set(&lport->xmt_ls_abort, 0);
2114 atomic_set(&lport->xmt_ls_err, 0);
2115 atomic_set(&lport->cmpl_fcp_xb, 0);
2116 atomic_set(&lport->cmpl_fcp_err, 0);
2117 atomic_set(&lport->cmpl_ls_xb, 0);
2118 atomic_set(&lport->cmpl_ls_err, 0);
2119 atomic_set(&lport->fc4NvmeLsRequests, 0);
2120 atomic_set(&lport->fc4NvmeLsCmpls, 0);
2126 /* lpfc_nvme_lport_unreg_wait - Wait for the host to complete an lport unreg.
2128 * The driver has to wait for the host nvme transport to callback
2129 * indicating the localport has successfully unregistered all
2130 * resources. Since this is an uninterruptible wait, loop every ten
2131 * seconds and print a message indicating no progress.
2133 * An uninterruptible wait is used because of the risk of transport-to-
2134 * driver state mismatch.
2137 lpfc_nvme_lport_unreg_wait(struct lpfc_vport *vport,
2138 struct lpfc_nvme_lport *lport,
2139 struct completion *lport_unreg_cmp)
2141 #if (IS_ENABLED(CONFIG_NVME_FC))
2145 /* Host transport has to clean up and confirm requiring an indefinite
2146 * wait. Print a message if a 10 second wait expires and renew the
2147 * wait. This is unexpected.
2149 wait_tmo = msecs_to_jiffies(LPFC_NVME_WAIT_TMO * 1000);
2151 ret = wait_for_completion_timeout(lport_unreg_cmp, wait_tmo);
2152 if (unlikely(!ret)) {
2153 lpfc_printf_vlog(vport, KERN_ERR, LOG_NVME_IOERR,
2154 "6176 Lport %p Localport %p wait "
2155 "timed out. Renewing.\n",
2156 lport, vport->localport);
2161 lpfc_printf_vlog(vport, KERN_INFO, LOG_NVME_IOERR,
2162 "6177 Lport %p Localport %p Complete Success\n",
2163 lport, vport->localport);
2168 * lpfc_nvme_destroy_localport - Destroy lpfc_nvme bound to nvme transport.
2169 * @pnvme: pointer to lpfc nvme data structure.
2171 * This routine is invoked to destroy all lports bound to the phba.
2172 * The lport memory was allocated by the nvme fc transport and is
2173 * released there. This routine ensures all rports bound to the
2174 * lport have been disconnected.
2178 lpfc_nvme_destroy_localport(struct lpfc_vport *vport)
2180 #if (IS_ENABLED(CONFIG_NVME_FC))
2181 struct nvme_fc_local_port *localport;
2182 struct lpfc_nvme_lport *lport;
2184 DECLARE_COMPLETION_ONSTACK(lport_unreg_cmp);
2186 if (vport->nvmei_support == 0)
2189 localport = vport->localport;
2190 lport = (struct lpfc_nvme_lport *)localport->private;
2192 lpfc_printf_vlog(vport, KERN_INFO, LOG_NVME,
2193 "6011 Destroying NVME localport %p\n",
2196 /* lport's rport list is clear. Unregister
2197 * lport and release resources.
2199 lport->lport_unreg_cmp = &lport_unreg_cmp;
2200 ret = nvme_fc_unregister_localport(localport);
2202 /* Wait for completion. This either blocks
2203 * indefinitely or succeeds
2205 lpfc_nvme_lport_unreg_wait(vport, lport, &lport_unreg_cmp);
2206 vport->localport = NULL;
2208 /* Regardless of the unregister upcall response, clear
2209 * nvmei_support. All rports are unregistered and the
2210 * driver will clean up.
2212 vport->nvmei_support = 0;
2214 lpfc_printf_vlog(vport,
2215 KERN_INFO, LOG_NVME_DISC,
2216 "6009 Unregistered lport Success\n");
2218 lpfc_printf_vlog(vport,
2219 KERN_INFO, LOG_NVME_DISC,
2220 "6010 Unregistered lport "
2221 "Failed, status x%x\n",
2228 lpfc_nvme_update_localport(struct lpfc_vport *vport)
2230 #if (IS_ENABLED(CONFIG_NVME_FC))
2231 struct nvme_fc_local_port *localport;
2232 struct lpfc_nvme_lport *lport;
2234 localport = vport->localport;
2236 lpfc_printf_vlog(vport, KERN_WARNING, LOG_NVME,
2237 "6710 Update NVME fail. No localport\n");
2240 lport = (struct lpfc_nvme_lport *)localport->private;
2242 lpfc_printf_vlog(vport, KERN_WARNING, LOG_NVME,
2243 "6171 Update NVME fail. localP %p, No lport\n",
2247 lpfc_printf_vlog(vport, KERN_INFO, LOG_NVME,
2248 "6012 Update NVME lport %p did x%x\n",
2249 localport, vport->fc_myDID);
2251 localport->port_id = vport->fc_myDID;
2252 if (localport->port_id == 0)
2253 localport->port_role = FC_PORT_ROLE_NVME_DISCOVERY;
2255 localport->port_role = FC_PORT_ROLE_NVME_INITIATOR;
2257 lpfc_printf_vlog(vport, KERN_INFO, LOG_NVME_DISC,
2258 "6030 bound lport %p to DID x%06x\n",
2259 lport, localport->port_id);
2264 lpfc_nvme_register_port(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp)
2266 #if (IS_ENABLED(CONFIG_NVME_FC))
2268 struct nvme_fc_local_port *localport;
2269 struct lpfc_nvme_lport *lport;
2270 struct lpfc_nvme_rport *rport;
2271 struct lpfc_nvme_rport *oldrport;
2272 struct nvme_fc_remote_port *remote_port;
2273 struct nvme_fc_port_info rpinfo;
2274 struct lpfc_nodelist *prev_ndlp = NULL;
2276 lpfc_printf_vlog(ndlp->vport, KERN_INFO, LOG_NVME_DISC,
2277 "6006 Register NVME PORT. DID x%06x nlptype x%x\n",
2278 ndlp->nlp_DID, ndlp->nlp_type);
2280 localport = vport->localport;
2284 lport = (struct lpfc_nvme_lport *)localport->private;
2286 /* NVME rports are not preserved across devloss.
2287 * Just register this instance. Note, rpinfo->dev_loss_tmo
2288 * is left 0 to indicate accept transport defaults. The
2289 * driver communicates port role capabilities consistent
2290 * with the PRLI response data.
2292 memset(&rpinfo, 0, sizeof(struct nvme_fc_port_info));
2293 rpinfo.port_id = ndlp->nlp_DID;
2294 if (ndlp->nlp_type & NLP_NVME_TARGET)
2295 rpinfo.port_role |= FC_PORT_ROLE_NVME_TARGET;
2296 if (ndlp->nlp_type & NLP_NVME_INITIATOR)
2297 rpinfo.port_role |= FC_PORT_ROLE_NVME_INITIATOR;
2299 if (ndlp->nlp_type & NLP_NVME_DISCOVERY)
2300 rpinfo.port_role |= FC_PORT_ROLE_NVME_DISCOVERY;
2302 rpinfo.port_name = wwn_to_u64(ndlp->nlp_portname.u.wwn);
2303 rpinfo.node_name = wwn_to_u64(ndlp->nlp_nodename.u.wwn);
2305 spin_lock_irq(&vport->phba->hbalock);
2306 oldrport = lpfc_ndlp_get_nrport(ndlp);
2307 spin_unlock_irq(&vport->phba->hbalock);
2311 ret = nvme_fc_register_remoteport(localport, &rpinfo, &remote_port);
2313 /* If the ndlp already has an nrport, this is just
2314 * a resume of the existing rport. Else this is a
2317 /* Guard against an unregister/reregister
2318 * race that leaves the WAIT flag set.
2320 spin_lock_irq(&vport->phba->hbalock);
2321 ndlp->upcall_flags &= ~NLP_WAIT_FOR_UNREG;
2322 spin_unlock_irq(&vport->phba->hbalock);
2323 rport = remote_port->private;
2325 /* New remoteport record does not guarantee valid
2326 * host private memory area.
2328 prev_ndlp = oldrport->ndlp;
2329 if (oldrport == remote_port->private) {
2330 /* Same remoteport - ndlp should match.
2333 lpfc_printf_vlog(ndlp->vport, KERN_INFO,
2335 "6014 Rebinding lport to "
2336 "remoteport %p wwpn 0x%llx, "
2337 "Data: x%x x%x %p %p x%x x%06x\n",
2339 remote_port->port_name,
2340 remote_port->port_id,
2341 remote_port->port_role,
2349 /* Sever the ndlp<->rport association
2350 * before dropping the ndlp ref from
2353 spin_lock_irq(&vport->phba->hbalock);
2354 ndlp->nrport = NULL;
2355 ndlp->upcall_flags &= ~NLP_WAIT_FOR_UNREG;
2356 spin_unlock_irq(&vport->phba->hbalock);
2358 rport->remoteport = NULL;
2360 /* Reference only removed if previous NDLP is no longer
2361 * active. It might be just a swap and removing the
2362 * reference would cause a premature cleanup.
2364 if (prev_ndlp && prev_ndlp != ndlp) {
2365 if ((!NLP_CHK_NODE_ACT(prev_ndlp)) ||
2366 (!prev_ndlp->nrport))
2367 lpfc_nlp_put(prev_ndlp);
2371 /* Clean bind the rport to the ndlp. */
2372 rport->remoteport = remote_port;
2373 rport->lport = lport;
2375 spin_lock_irq(&vport->phba->hbalock);
2376 ndlp->nrport = rport;
2377 spin_unlock_irq(&vport->phba->hbalock);
2378 lpfc_printf_vlog(vport, KERN_INFO,
2379 LOG_NVME_DISC | LOG_NODE,
2380 "6022 Binding new rport to "
2381 "lport %p Remoteport %p rport %p WWNN 0x%llx, "
2382 "Rport WWPN 0x%llx DID "
2383 "x%06x Role x%x, ndlp %p prev_ndlp %p\n",
2384 lport, remote_port, rport,
2385 rpinfo.node_name, rpinfo.port_name,
2386 rpinfo.port_id, rpinfo.port_role,
2389 lpfc_printf_vlog(vport, KERN_ERR,
2390 LOG_NVME_DISC | LOG_NODE,
2391 "6031 RemotePort Registration failed "
2392 "err: %d, DID x%06x\n",
2393 ret, ndlp->nlp_DID);
2402 /* lpfc_nvme_unregister_port - unbind the DID and port_role from this rport.
2404 * There is no notion of Devloss or rport recovery from the current
2405 * nvme_transport perspective. Loss of an rport just means IO cannot
2406 * be sent and recovery is completely up to the initator.
2407 * For now, the driver just unbinds the DID and port_role so that
2408 * no further IO can be issued. Changes are planned for later.
2410 * Notes - the ndlp reference count is not decremented here since
2411 * since there is no nvme_transport api for devloss. Node ref count
2412 * is only adjusted in driver unload.
2415 lpfc_nvme_unregister_port(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp)
2417 #if (IS_ENABLED(CONFIG_NVME_FC))
2419 struct nvme_fc_local_port *localport;
2420 struct lpfc_nvme_lport *lport;
2421 struct lpfc_nvme_rport *rport;
2422 struct nvme_fc_remote_port *remoteport = NULL;
2424 localport = vport->localport;
2426 /* This is fundamental error. The localport is always
2427 * available until driver unload. Just exit.
2432 lport = (struct lpfc_nvme_lport *)localport->private;
2436 spin_lock_irq(&vport->phba->hbalock);
2437 rport = lpfc_ndlp_get_nrport(ndlp);
2439 remoteport = rport->remoteport;
2440 spin_unlock_irq(&vport->phba->hbalock);
2444 lpfc_printf_vlog(vport, KERN_INFO, LOG_NVME_DISC,
2445 "6033 Unreg nvme remoteport %p, portname x%llx, "
2446 "port_id x%06x, portstate x%x port type x%x\n",
2447 remoteport, remoteport->port_name,
2448 remoteport->port_id, remoteport->port_state,
2451 /* Sanity check ndlp type. Only call for NVME ports. Don't
2452 * clear any rport state until the transport calls back.
2455 if (ndlp->nlp_type & NLP_NVME_TARGET) {
2456 /* No concern about the role change on the nvme remoteport.
2457 * The transport will update it.
2459 ndlp->upcall_flags |= NLP_WAIT_FOR_UNREG;
2461 /* Don't let the host nvme transport keep sending keep-alives
2462 * on this remoteport. Vport is unloading, no recovery. The
2463 * return values is ignored. The upcall is a courtesy to the
2466 if (vport->load_flag & FC_UNLOADING)
2467 (void)nvme_fc_set_remoteport_devloss(remoteport, 0);
2469 ret = nvme_fc_unregister_remoteport(remoteport);
2472 lpfc_printf_vlog(vport, KERN_ERR, LOG_NVME_DISC,
2473 "6167 NVME unregister failed %d "
2475 ret, remoteport->port_state);
2482 lpfc_printf_vlog(vport, KERN_ERR, LOG_NVME_DISC,
2483 "6168 State error: lport %p, rport%p FCID x%06x\n",
2484 vport->localport, ndlp->rport, ndlp->nlp_DID);
2488 * lpfc_sli4_nvme_xri_aborted - Fast-path process of NVME xri abort
2489 * @phba: pointer to lpfc hba data structure.
2490 * @axri: pointer to the fcp xri abort wcqe structure.
2492 * This routine is invoked by the worker thread to process a SLI4 fast-path
2493 * NVME aborted xri. Aborted NVME IO commands are completed to the transport
2497 lpfc_sli4_nvme_xri_aborted(struct lpfc_hba *phba,
2498 struct sli4_wcqe_xri_aborted *axri, int idx)
2500 uint16_t xri = bf_get(lpfc_wcqe_xa_xri, axri);
2501 struct lpfc_io_buf *lpfc_ncmd, *next_lpfc_ncmd;
2502 struct nvmefc_fcp_req *nvme_cmd = NULL;
2503 struct lpfc_nodelist *ndlp;
2504 struct lpfc_sli4_hdw_queue *qp;
2505 unsigned long iflag = 0;
2507 if (!(phba->cfg_enable_fc4_type & LPFC_ENABLE_NVME))
2509 qp = &phba->sli4_hba.hdwq[idx];
2510 spin_lock_irqsave(&phba->hbalock, iflag);
2511 spin_lock(&qp->abts_nvme_buf_list_lock);
2512 list_for_each_entry_safe(lpfc_ncmd, next_lpfc_ncmd,
2513 &qp->lpfc_abts_nvme_buf_list, list) {
2514 if (lpfc_ncmd->cur_iocbq.sli4_xritag == xri) {
2515 list_del_init(&lpfc_ncmd->list);
2516 qp->abts_nvme_io_bufs--;
2517 lpfc_ncmd->flags &= ~LPFC_SBUF_XBUSY;
2518 lpfc_ncmd->status = IOSTAT_SUCCESS;
2519 spin_unlock(&qp->abts_nvme_buf_list_lock);
2521 spin_unlock_irqrestore(&phba->hbalock, iflag);
2522 ndlp = lpfc_ncmd->ndlp;
2524 lpfc_sli4_abts_err_handler(phba, ndlp, axri);
2526 lpfc_printf_log(phba, KERN_INFO, LOG_NVME_ABTS,
2527 "6311 nvme_cmd %p xri x%x tag x%x "
2528 "abort complete and xri released\n",
2529 lpfc_ncmd->nvmeCmd, xri,
2530 lpfc_ncmd->cur_iocbq.iotag);
2532 /* Aborted NVME commands are required to not complete
2533 * before the abort exchange command fully completes.
2534 * Once completed, it is available via the put list.
2536 if (lpfc_ncmd->nvmeCmd) {
2537 nvme_cmd = lpfc_ncmd->nvmeCmd;
2538 nvme_cmd->done(nvme_cmd);
2539 lpfc_ncmd->nvmeCmd = NULL;
2541 lpfc_release_nvme_buf(phba, lpfc_ncmd);
2545 spin_unlock(&qp->abts_nvme_buf_list_lock);
2546 spin_unlock_irqrestore(&phba->hbalock, iflag);
2548 lpfc_printf_log(phba, KERN_INFO, LOG_NVME_ABTS,
2549 "6312 XRI Aborted xri x%x not found\n", xri);
2554 * lpfc_nvme_wait_for_io_drain - Wait for all NVME wqes to complete
2555 * @phba: Pointer to HBA context object.
2557 * This function flushes all wqes in the nvme rings and frees all resources
2558 * in the txcmplq. This function does not issue abort wqes for the IO
2559 * commands in txcmplq, they will just be returned with
2560 * IOERR_SLI_DOWN. This function is invoked with EEH when device's PCI
2561 * slot has been permanently disabled.
2564 lpfc_nvme_wait_for_io_drain(struct lpfc_hba *phba)
2566 struct lpfc_sli_ring *pring;
2567 u32 i, wait_cnt = 0;
2569 if (phba->sli_rev < LPFC_SLI_REV4 || !phba->sli4_hba.hdwq)
2572 /* Cycle through all NVME rings and make sure all outstanding
2573 * WQEs have been removed from the txcmplqs.
2575 for (i = 0; i < phba->cfg_hdw_queue; i++) {
2576 if (!phba->sli4_hba.hdwq[i].nvme_wq)
2578 pring = phba->sli4_hba.hdwq[i].nvme_wq->pring;
2583 /* Retrieve everything on the txcmplq */
2584 while (!list_empty(&pring->txcmplq)) {
2585 msleep(LPFC_XRI_EXCH_BUSY_WAIT_T1);
2588 /* The sleep is 10mS. Every ten seconds,
2589 * dump a message. Something is wrong.
2591 if ((wait_cnt % 1000) == 0) {
2592 lpfc_printf_log(phba, KERN_ERR, LOG_NVME_IOERR,
2593 "6178 NVME IO not empty, "
2594 "cnt %d\n", wait_cnt);