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scsi: lpfc: Adapt cpucheck debugfs logic to Hardware Queues
[linux-2.6-block.git] / drivers / scsi / lpfc / lpfc_nvme.c
CommitLineData
01649561
JS		 1/*******************************************************************
2 * This file is part of the Emulex Linux Device Driver for *
3 * Fibre Channel Host Bus Adapters. *
128bddac 4 * Copyright (C) 2017-2018 Broadcom. All Rights Reserved. The term *
3e21d1cb 5 * “Broadcom” refers to Broadcom Inc. and/or its subsidiaries. *
01649561
JS		 6 * Copyright (C) 2004-2016 Emulex. All rights reserved. *
7 * EMULEX and SLI are trademarks of Emulex. *
d080abe0 8 * www.broadcom.com *
01649561
JS		 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 <linux/nvme.h>
40#include <linux/nvme-fc-driver.h>
41#include <linux/nvme-fc.h>
42#include "lpfc_version.h"
43#include "lpfc_hw4.h"
44#include "lpfc_hw.h"
45#include "lpfc_sli.h"
46#include "lpfc_sli4.h"
47#include "lpfc_nl.h"
48#include "lpfc_disc.h"
49#include "lpfc.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"
bd2cdd5e 55#include "lpfc_debugfs.h"
01649561
JS		 56
57/* NVME initiator-based functions */
58
59static struct lpfc_nvme_buf *
cf1a1d3e 60lpfc_get_nvme_buf(struct lpfc_hba *phba, struct lpfc_nodelist *ndlp,
5e5b511d 61 int idx, int expedite);
01649561
JS		 62
63static void
64lpfc_release_nvme_buf(struct lpfc_hba *, struct lpfc_nvme_buf *);
65
81e6a637 66static struct nvme_fc_port_template lpfc_nvme_template;
01649561 67
fab2e466
CIK		 68static union lpfc_wqe128 lpfc_iread_cmd_template;
69static union lpfc_wqe128 lpfc_iwrite_cmd_template;
70static union lpfc_wqe128 lpfc_icmnd_cmd_template;
5fd11085
JS		 71
72/* Setup WQE templates for NVME IOs */
73void
fab2e466 74lpfc_nvme_cmd_template(void)
5fd11085
JS		 75{
76 union lpfc_wqe128 *wqe;
77
78 /* IREAD template */
79 wqe = &lpfc_iread_cmd_template;
80 memset(wqe, 0, sizeof(union lpfc_wqe128));
81
82 /* Word 0, 1, 2 - BDE is variable */
83
84 /* Word 3 - cmd_buff_len, payload_offset_len is zero */
85
86 /* Word 4 - total_xfer_len is variable */
87
88 /* Word 5 - is zero */
89
90 /* Word 6 - ctxt_tag, xri_tag is variable */
91
92 /* Word 7 */
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);
97
98 /* Word 8 - abort_tag is variable */
99
100 /* Word 9 - reqtag is variable */
101
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);
109
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);
114
115 /* Word 12 - is zero */
116
117 /* Word 13, 14, 15 - PBDE is variable */
118
119 /* IWRITE template */
120 wqe = &lpfc_iwrite_cmd_template;
121 memset(wqe, 0, sizeof(union lpfc_wqe128));
122
123 /* Word 0, 1, 2 - BDE is variable */
124
125 /* Word 3 - cmd_buff_len, payload_offset_len is zero */
126
127 /* Word 4 - total_xfer_len is variable */
128
129 /* Word 5 - initial_xfer_len is variable */
130
131 /* Word 6 - ctxt_tag, xri_tag is variable */
132
133 /* Word 7 */
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);
138
139 /* Word 8 - abort_tag is variable */
140
141 /* Word 9 - reqtag is variable */
142
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);
150
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);
155
156 /* Word 12 - is zero */
157
158 /* Word 13, 14, 15 - PBDE is variable */
159
160 /* ICMND template */
161 wqe = &lpfc_icmnd_cmd_template;
162 memset(wqe, 0, sizeof(union lpfc_wqe128));
163
164 /* Word 0, 1, 2 - BDE is variable */
165
166 /* Word 3 - payload_offset_len is variable */
167
168 /* Word 4, 5 - is zero */
169
170 /* Word 6 - ctxt_tag, xri_tag is variable */
171
172 /* Word 7 */
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);
177
178 /* Word 8 - abort_tag is variable */
179
180 /* Word 9 - reqtag is variable */
181
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);
189
190 /* Word 11 */
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);
194
195 /* Word 12, 13, 14, 15 - is zero */
196}
197
01649561
JS		 198/**
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.
203 *
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.
207 *
208 * Return value :
209 * 0 - Success
210 * -EINVAL - Unsupported input value.
211 * -ENOMEM - Could not alloc necessary memory
212 **/
213static int
214lpfc_nvme_create_queue(struct nvme_fc_local_port *pnvme_lport,
215 unsigned int qidx, u16 qsize,
216 void **handle)
217{
218 struct lpfc_nvme_lport *lport;
219 struct lpfc_vport *vport;
220 struct lpfc_nvme_qhandle *qhandle;
221 char *str;
222
c3725bdc
JS		 223 if (!pnvme_lport->private)
224 return -ENOMEM;
225
01649561
JS		 226 lport = (struct lpfc_nvme_lport *)pnvme_lport->private;
227 vport = lport->vport;
228 qhandle = kzalloc(sizeof(struct lpfc_nvme_qhandle), GFP_KERNEL);
229 if (qhandle == NULL)
230 return -ENOMEM;
231
232 qhandle->cpu_id = smp_processor_id();
233 qhandle->qidx = qidx;
234 /*
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.
238 */
239 if (qidx) {
240 str = "IO "; /* IO queue */
241 qhandle->index = ((qidx - 1) %
cdb42bec 242 vport->phba->cfg_hdw_queue);
01649561
JS		 243 } else {
244 str = "ADM"; /* Admin queue */
245 qhandle->index = qidx;
246 }
247
d58734f0 248 lpfc_printf_vlog(vport, KERN_INFO, LOG_NVME,
01649561 249 "6073 Binding %s HdwQueue %d (cpu %d) to "
cdb42bec 250 "hdw_queue %d qhandle %p\n", str,
01649561
JS		 251 qidx, qhandle->cpu_id, qhandle->index, qhandle);
252 *handle = (void *)qhandle;
253 return 0;
254}
255
256/**
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
261 *
262 * Driver registers this routine to free
263 * any internal data structures to bind the @qidx to its internal
264 * IO queues.
265 *
266 * Return value :
267 * 0 - Success
268 * TODO: What are the failure codes.
269 **/
270static void
271lpfc_nvme_delete_queue(struct nvme_fc_local_port *pnvme_lport,
272 unsigned int qidx,
273 void *handle)
274{
275 struct lpfc_nvme_lport *lport;
276 struct lpfc_vport *vport;
277
c3725bdc
JS		 278 if (!pnvme_lport->private)
279 return;
280
01649561
JS		 281 lport = (struct lpfc_nvme_lport *)pnvme_lport->private;
282 vport = lport->vport;
283
284 lpfc_printf_vlog(vport, KERN_INFO, LOG_NVME,
2879265f 285 "6001 ENTER. lpfc_pnvme %p, qidx x%x qhandle %p\n",
01649561
JS		 286 lport, qidx, handle);
287 kfree(handle);
288}
289
290static void
291lpfc_nvme_localport_delete(struct nvme_fc_local_port *localport)
292{
293 struct lpfc_nvme_lport *lport = localport->private;
294
add9d6be
JS		 295 lpfc_printf_vlog(lport->vport, KERN_INFO, LOG_NVME,
296 "6173 localport %p delete complete\n",
297 lport);
298
01649561
JS		 299 /* release any threads waiting for the unreg to complete */
300 complete(&lport->lport_unreg_done);
301}
302
303/* lpfc_nvme_remoteport_delete
304 *
305 * @remoteport: Pointer to an nvme transport remoteport instance.
306 *
307 * This is a template downcall. NVME transport calls this function
308 * when it has completed the unregistration of a previously
309 * registered remoteport.
310 *
311 * Return value :
312 * None
313 */
314void
315lpfc_nvme_remoteport_delete(struct nvme_fc_remote_port *remoteport)
316{
317 struct lpfc_nvme_rport *rport = remoteport->private;
318 struct lpfc_vport *vport;
319 struct lpfc_nodelist *ndlp;
320
321 ndlp = rport->ndlp;
322 if (!ndlp)
323 goto rport_err;
324
325 vport = ndlp->vport;
326 if (!vport)
327 goto rport_err;
328
329 /* Remove this rport from the lport's list - memory is owned by the
330 * transport. Remove the ndlp reference for the NVME transport before
7a06dcd3 331 * calling state machine to remove the node.
01649561
JS		 332 */
333 lpfc_printf_vlog(vport, KERN_INFO, LOG_NVME_DISC,
3fd78355 334 "6146 remoteport delete of remoteport %p\n",
01649561 335 remoteport);
3fd78355 336 spin_lock_irq(&vport->phba->hbalock);
b15bd3e6
JS		 337
338 /* The register rebind might have occurred before the delete
339 * downcall. Guard against this race.
340 */
341 if (ndlp->upcall_flags & NLP_WAIT_FOR_UNREG) {
342 ndlp->nrport = NULL;
343 ndlp->upcall_flags &= ~NLP_WAIT_FOR_UNREG;
344 }
3fd78355
JS		 345 spin_unlock_irq(&vport->phba->hbalock);
346
347 /* Remove original register reference. The host transport
348 * won't reference this rport/remoteport any further.
349 */
01649561
JS		 350 lpfc_nlp_put(ndlp);
351
352 rport_err:
3fd78355 353 return;
01649561
JS		 354}
355
356static void
357lpfc_nvme_cmpl_gen_req(struct lpfc_hba *phba, struct lpfc_iocbq *cmdwqe,
358 struct lpfc_wcqe_complete *wcqe)
359{
360 struct lpfc_vport *vport = cmdwqe->vport;
4b056682 361 struct lpfc_nvme_lport *lport;
01649561
JS		 362 uint32_t status;
363 struct nvmefc_ls_req *pnvme_lsreq;
364 struct lpfc_dmabuf *buf_ptr;
365 struct lpfc_nodelist *ndlp;
366
01649561
JS		 367 pnvme_lsreq = (struct nvmefc_ls_req *)cmdwqe->context2;
368 status = bf_get(lpfc_wcqe_c_status, wcqe) & LPFC_IOCB_STATUS_MASK;
66a210ff 369
66a85155
JS		 370 if (vport->localport) {
371 lport = (struct lpfc_nvme_lport *)vport->localport->private;
372 if (lport) {
373 atomic_inc(&lport->fc4NvmeLsCmpls);
374 if (status) {
375 if (bf_get(lpfc_wcqe_c_xb, wcqe))
376 atomic_inc(&lport->cmpl_ls_xb);
377 atomic_inc(&lport->cmpl_ls_err);
378 }
66a210ff 379 }
4b056682
JS		 380 }
381
01649561
JS		 382 ndlp = (struct lpfc_nodelist *)cmdwqe->context1;
383 lpfc_printf_vlog(vport, KERN_INFO, LOG_NVME_DISC,
384 "6047 nvme cmpl Enter "
815a9c43
JS		 385 "Data %p DID %x Xri: %x status %x reason x%x cmd:%p "
386 "lsreg:%p bmp:%p ndlp:%p\n",
01649561
JS		 387 pnvme_lsreq, ndlp ? ndlp->nlp_DID : 0,
388 cmdwqe->sli4_xritag, status,
815a9c43 389 (wcqe->parameter & 0xffff),
01649561
JS		 390 cmdwqe, pnvme_lsreq, cmdwqe->context3, ndlp);
391
bd2cdd5e
JS		 392 lpfc_nvmeio_data(phba, "NVME LS CMPL: xri x%x stat x%x parm x%x\n",
393 cmdwqe->sli4_xritag, status, wcqe->parameter);
394
01649561
JS		 395 if (cmdwqe->context3) {
396 buf_ptr = (struct lpfc_dmabuf *)cmdwqe->context3;
397 lpfc_mbuf_free(phba, buf_ptr->virt, buf_ptr->phys);
398 kfree(buf_ptr);
399 cmdwqe->context3 = NULL;
400 }
401 if (pnvme_lsreq->done)
402 pnvme_lsreq->done(pnvme_lsreq, status);
403 else
404 lpfc_printf_vlog(vport, KERN_ERR, LOG_NVME_DISC,
405 "6046 nvme cmpl without done call back? "
406 "Data %p DID %x Xri: %x status %x\n",
407 pnvme_lsreq, ndlp ? ndlp->nlp_DID : 0,
408 cmdwqe->sli4_xritag, status);
409 if (ndlp) {
410 lpfc_nlp_put(ndlp);
411 cmdwqe->context1 = NULL;
412 }
413 lpfc_sli_release_iocbq(phba, cmdwqe);
414}
415
416static int
417lpfc_nvme_gen_req(struct lpfc_vport *vport, struct lpfc_dmabuf *bmp,
418 struct lpfc_dmabuf *inp,
205e8240
JS		 419 struct nvmefc_ls_req *pnvme_lsreq,
420 void (*cmpl)(struct lpfc_hba *, struct lpfc_iocbq *,
421 struct lpfc_wcqe_complete *),
422 struct lpfc_nodelist *ndlp, uint32_t num_entry,
423 uint32_t tmo, uint8_t retry)
01649561 424{
205e8240
JS		 425 struct lpfc_hba *phba = vport->phba;
426 union lpfc_wqe128 *wqe;
01649561
JS		 427 struct lpfc_iocbq *genwqe;
428 struct ulp_bde64 *bpl;
429 struct ulp_bde64 bde;
430 int i, rc, xmit_len, first_len;
431
432 /* Allocate buffer for command WQE */
433 genwqe = lpfc_sli_get_iocbq(phba);
434 if (genwqe == NULL)
435 return 1;
436
437 wqe = &genwqe->wqe;
438 memset(wqe, 0, sizeof(union lpfc_wqe));
439
440 genwqe->context3 = (uint8_t *)bmp;
441 genwqe->iocb_flag |= LPFC_IO_NVME_LS;
442
443 /* Save for completion so we can release these resources */
444 genwqe->context1 = lpfc_nlp_get(ndlp);
445 genwqe->context2 = (uint8_t *)pnvme_lsreq;
446 /* Fill in payload, bp points to frame payload */
447
448 if (!tmo)
449 /* FC spec states we need 3 * ratov for CT requests */
450 tmo = (3 * phba->fc_ratov);
451
452 /* For this command calculate the xmit length of the request bde. */
453 xmit_len = 0;
454 first_len = 0;
455 bpl = (struct ulp_bde64 *)bmp->virt;
456 for (i = 0; i < num_entry; i++) {
457 bde.tus.w = bpl[i].tus.w;
458 if (bde.tus.f.bdeFlags != BUFF_TYPE_BDE_64)
459 break;
460 xmit_len += bde.tus.f.bdeSize;
461 if (i == 0)
462 first_len = xmit_len;
463 }
464
465 genwqe->rsvd2 = num_entry;
466 genwqe->hba_wqidx = 0;
467
468 /* Words 0 - 2 */
469 wqe->generic.bde.tus.f.bdeFlags = BUFF_TYPE_BDE_64;
470 wqe->generic.bde.tus.f.bdeSize = first_len;
471 wqe->generic.bde.addrLow = bpl[0].addrLow;
472 wqe->generic.bde.addrHigh = bpl[0].addrHigh;
473
474 /* Word 3 */
475 wqe->gen_req.request_payload_len = first_len;
476
477 /* Word 4 */
478
479 /* Word 5 */
480 bf_set(wqe_dfctl, &wqe->gen_req.wge_ctl, 0);
481 bf_set(wqe_si, &wqe->gen_req.wge_ctl, 1);
482 bf_set(wqe_la, &wqe->gen_req.wge_ctl, 1);
8b361639 483 bf_set(wqe_rctl, &wqe->gen_req.wge_ctl, FC_RCTL_ELS4_REQ);
01649561
JS		 484 bf_set(wqe_type, &wqe->gen_req.wge_ctl, FC_TYPE_NVME);
485
486 /* Word 6 */
487 bf_set(wqe_ctxt_tag, &wqe->gen_req.wqe_com,
488 phba->sli4_hba.rpi_ids[ndlp->nlp_rpi]);
489 bf_set(wqe_xri_tag, &wqe->gen_req.wqe_com, genwqe->sli4_xritag);
490
491 /* Word 7 */
492 bf_set(wqe_tmo, &wqe->gen_req.wqe_com, (vport->phba->fc_ratov-1));
493 bf_set(wqe_class, &wqe->gen_req.wqe_com, CLASS3);
494 bf_set(wqe_cmnd, &wqe->gen_req.wqe_com, CMD_GEN_REQUEST64_WQE);
495 bf_set(wqe_ct, &wqe->gen_req.wqe_com, SLI4_CT_RPI);
496
497 /* Word 8 */
498 wqe->gen_req.wqe_com.abort_tag = genwqe->iotag;
499
500 /* Word 9 */
501 bf_set(wqe_reqtag, &wqe->gen_req.wqe_com, genwqe->iotag);
502
503 /* Word 10 */
504 bf_set(wqe_dbde, &wqe->gen_req.wqe_com, 1);
505 bf_set(wqe_iod, &wqe->gen_req.wqe_com, LPFC_WQE_IOD_READ);
506 bf_set(wqe_qosd, &wqe->gen_req.wqe_com, 1);
507 bf_set(wqe_lenloc, &wqe->gen_req.wqe_com, LPFC_WQE_LENLOC_NONE);
508 bf_set(wqe_ebde_cnt, &wqe->gen_req.wqe_com, 0);
509
510 /* Word 11 */
511 bf_set(wqe_cqid, &wqe->gen_req.wqe_com, LPFC_WQE_CQ_ID_DEFAULT);
512 bf_set(wqe_cmd_type, &wqe->gen_req.wqe_com, OTHER_COMMAND);
513
514
515 /* Issue GEN REQ WQE for NPORT <did> */
516 lpfc_printf_vlog(vport, KERN_INFO, LOG_ELS,
517 "6050 Issue GEN REQ WQE to NPORT x%x "
518 "Data: x%x x%x wq:%p lsreq:%p bmp:%p xmit:%d 1st:%d\n",
519 ndlp->nlp_DID, genwqe->iotag,
520 vport->port_state,
521 genwqe, pnvme_lsreq, bmp, xmit_len, first_len);
522 genwqe->wqe_cmpl = cmpl;
523 genwqe->iocb_cmpl = NULL;
524 genwqe->drvrTimeout = tmo + LPFC_DRVR_TIMEOUT;
525 genwqe->vport = vport;
526 genwqe->retry = retry;
527
bd2cdd5e
JS		 528 lpfc_nvmeio_data(phba, "NVME LS XMIT: xri x%x iotag x%x to x%06x\n",
529 genwqe->sli4_xritag, genwqe->iotag, ndlp->nlp_DID);
530
01649561 531 rc = lpfc_sli4_issue_wqe(phba, LPFC_ELS_RING, genwqe);
cd22d605 532 if (rc) {
01649561
JS		 533 lpfc_printf_vlog(vport, KERN_ERR, LOG_ELS,
534 "6045 Issue GEN REQ WQE to NPORT x%x "
535 "Data: x%x x%x\n",
536 ndlp->nlp_DID, genwqe->iotag,
537 vport->port_state);
538 lpfc_sli_release_iocbq(phba, genwqe);
539 return 1;
540 }
541 return 0;
542}
543
544/**
545 * lpfc_nvme_ls_req - Issue an Link Service request
546 * @lpfc_pnvme: Pointer to the driver's nvme instance data
547 * @lpfc_nvme_lport: Pointer to the driver's local port data
548 * @lpfc_nvme_rport: Pointer to the rport getting the @lpfc_nvme_ereq
549 *
550 * Driver registers this routine to handle any link service request
551 * from the nvme_fc transport to a remote nvme-aware port.
552 *
553 * Return value :
554 * 0 - Success
555 * TODO: What are the failure codes.
556 **/
557static int
558lpfc_nvme_ls_req(struct nvme_fc_local_port *pnvme_lport,
559 struct nvme_fc_remote_port *pnvme_rport,
560 struct nvmefc_ls_req *pnvme_lsreq)
561{
562 int ret = 0;
563 struct lpfc_nvme_lport *lport;
815a9c43 564 struct lpfc_nvme_rport *rport;
01649561
JS		 565 struct lpfc_vport *vport;
566 struct lpfc_nodelist *ndlp;
567 struct ulp_bde64 *bpl;
568 struct lpfc_dmabuf *bmp;
ba43c4d0 569 uint16_t ntype, nstate;
01649561
JS		 570
571 /* there are two dma buf in the request, actually there is one and
572 * the second one is just the start address + cmd size.
573 * Before calling lpfc_nvme_gen_req these buffers need to be wrapped
574 * in a lpfc_dmabuf struct. When freeing we just free the wrapper
575 * because the nvem layer owns the data bufs.
576 * We do not have to break these packets open, we don't care what is in
577 * them. And we do not have to look at the resonse data, we only care
578 * that we got a response. All of the caring is going to happen in the
579 * nvme-fc layer.
580 */
581
582 lport = (struct lpfc_nvme_lport *)pnvme_lport->private;
815a9c43 583 rport = (struct lpfc_nvme_rport *)pnvme_rport->private;
66a210ff
JS		 584 if (unlikely(!lport) || unlikely(!rport))
585 return -EINVAL;
586
01649561
JS		 587 vport = lport->vport;
588
3386f4bd
JS		 589 if (vport->load_flag & FC_UNLOADING)
590 return -ENODEV;
591
815a9c43
JS		 592 /* Need the ndlp. It is stored in the driver's rport. */
593 ndlp = rport->ndlp;
ba43c4d0
JS		 594 if (!ndlp || !NLP_CHK_NODE_ACT(ndlp)) {
595 lpfc_printf_vlog(vport, KERN_ERR, LOG_NODE | LOG_NVME_IOERR,
815a9c43
JS		 596 "6051 Remoteport %p, rport has invalid ndlp. "
597 "Failing LS Req\n", pnvme_rport);
ba43c4d0
JS		 598 return -ENODEV;
599 }
600
601 /* The remote node has to be a mapped nvme target or an
602 * unmapped nvme initiator or it's an error.
603 */
604 ntype = ndlp->nlp_type;
605 nstate = ndlp->nlp_state;
606 if ((ntype & NLP_NVME_TARGET && nstate != NLP_STE_MAPPED_NODE) ||
607 (ntype & NLP_NVME_INITIATOR && nstate != NLP_STE_UNMAPPED_NODE)) {
608 lpfc_printf_vlog(vport, KERN_ERR, LOG_NODE | LOG_NVME_IOERR,
609 "6088 DID x%06x not ready for "
610 "IO. State x%x, Type x%x\n",
611 pnvme_rport->port_id,
612 ndlp->nlp_state, ndlp->nlp_type);
613 return -ENODEV;
01649561
JS		 614 }
615 bmp = kmalloc(sizeof(struct lpfc_dmabuf), GFP_KERNEL);
616 if (!bmp) {
617
618 lpfc_printf_vlog(vport, KERN_ERR, LOG_NVME_DISC,
619 "6044 Could not find node for DID %x\n",
620 pnvme_rport->port_id);
621 return 2;
622 }
623 INIT_LIST_HEAD(&bmp->list);
624 bmp->virt = lpfc_mbuf_alloc(vport->phba, MEM_PRI, &(bmp->phys));
625 if (!bmp->virt) {
626 lpfc_printf_vlog(vport, KERN_ERR, LOG_NVME_DISC,
627 "6042 Could not find node for DID %x\n",
628 pnvme_rport->port_id);
629 kfree(bmp);
630 return 3;
631 }
632 bpl = (struct ulp_bde64 *)bmp->virt;
633 bpl->addrHigh = le32_to_cpu(putPaddrHigh(pnvme_lsreq->rqstdma));
634 bpl->addrLow = le32_to_cpu(putPaddrLow(pnvme_lsreq->rqstdma));
635 bpl->tus.f.bdeFlags = 0;
636 bpl->tus.f.bdeSize = pnvme_lsreq->rqstlen;
637 bpl->tus.w = le32_to_cpu(bpl->tus.w);
638 bpl++;
639
640 bpl->addrHigh = le32_to_cpu(putPaddrHigh(pnvme_lsreq->rspdma));
641 bpl->addrLow = le32_to_cpu(putPaddrLow(pnvme_lsreq->rspdma));
642 bpl->tus.f.bdeFlags = BUFF_TYPE_BDE_64I;
643 bpl->tus.f.bdeSize = pnvme_lsreq->rsplen;
644 bpl->tus.w = le32_to_cpu(bpl->tus.w);
645
646 /* Expand print to include key fields. */
647 lpfc_printf_vlog(vport, KERN_INFO, LOG_NVME_DISC,
815a9c43
JS		 648 "6149 Issue LS Req to DID 0x%06x lport %p, rport %p "
649 "lsreq%p rqstlen:%d rsplen:%d %pad %pad\n",
650 ndlp->nlp_DID,
01649561
JS		 651 pnvme_lport, pnvme_rport,
652 pnvme_lsreq, pnvme_lsreq->rqstlen,
825c6abb
AB		 653 pnvme_lsreq->rsplen, &pnvme_lsreq->rqstdma,
654 &pnvme_lsreq->rspdma);
01649561 655
66a210ff 656 atomic_inc(&lport->fc4NvmeLsRequests);
01649561
JS		 657
658 /* Hardcode the wait to 30 seconds. Connections are failing otherwise.
659 * This code allows it all to work.
660 */
661 ret = lpfc_nvme_gen_req(vport, bmp, pnvme_lsreq->rqstaddr,
662 pnvme_lsreq, lpfc_nvme_cmpl_gen_req,
663 ndlp, 2, 30, 0);
664 if (ret != WQE_SUCCESS) {
4b056682 665 atomic_inc(&lport->xmt_ls_err);
815a9c43 666 lpfc_printf_vlog(vport, KERN_ERR, LOG_NVME_DISC,
01649561
JS		 667 "6052 EXIT. issue ls wqe failed lport %p, "
668 "rport %p lsreq%p Status %x DID %x\n",
669 pnvme_lport, pnvme_rport, pnvme_lsreq,
670 ret, ndlp->nlp_DID);
671 lpfc_mbuf_free(vport->phba, bmp->virt, bmp->phys);
672 kfree(bmp);
673 return ret;
674 }
675
676 /* Stub in routine and return 0 for now. */
677 return ret;
678}
679
680/**
681 * lpfc_nvme_ls_abort - Issue an Link Service request
682 * @lpfc_pnvme: Pointer to the driver's nvme instance data
683 * @lpfc_nvme_lport: Pointer to the driver's local port data
684 * @lpfc_nvme_rport: Pointer to the rport getting the @lpfc_nvme_ereq
685 *
686 * Driver registers this routine to handle any link service request
687 * from the nvme_fc transport to a remote nvme-aware port.
688 *
689 * Return value :
690 * 0 - Success
691 * TODO: What are the failure codes.
692 **/
693static void
694lpfc_nvme_ls_abort(struct nvme_fc_local_port *pnvme_lport,
695 struct nvme_fc_remote_port *pnvme_rport,
696 struct nvmefc_ls_req *pnvme_lsreq)
697{
698 struct lpfc_nvme_lport *lport;
699 struct lpfc_vport *vport;
700 struct lpfc_hba *phba;
701 struct lpfc_nodelist *ndlp;
702 LIST_HEAD(abort_list);
703 struct lpfc_sli_ring *pring;
704 struct lpfc_iocbq *wqe, *next_wqe;
705
706 lport = (struct lpfc_nvme_lport *)pnvme_lport->private;
66a210ff
JS		 707 if (unlikely(!lport))
708 return;
01649561
JS		 709 vport = lport->vport;
710 phba = vport->phba;
711
3386f4bd
JS		 712 if (vport->load_flag & FC_UNLOADING)
713 return;
714
01649561
JS		 715 ndlp = lpfc_findnode_did(vport, pnvme_rport->port_id);
716 if (!ndlp) {
717 lpfc_printf_vlog(vport, KERN_ERR, LOG_NVME_ABTS,
718 "6049 Could not find node for DID %x\n",
719 pnvme_rport->port_id);
720 return;
721 }
722
723 /* Expand print to include key fields. */
724 lpfc_printf_vlog(vport, KERN_INFO, LOG_NVME_ABTS,
725 "6040 ENTER. lport %p, rport %p lsreq %p rqstlen:%d "
825c6abb 726 "rsplen:%d %pad %pad\n",
01649561
JS		 727 pnvme_lport, pnvme_rport,
728 pnvme_lsreq, pnvme_lsreq->rqstlen,
825c6abb
AB		 729 pnvme_lsreq->rsplen, &pnvme_lsreq->rqstdma,
730 &pnvme_lsreq->rspdma);
01649561
JS		 731
732 /*
733 * Lock the ELS ring txcmplq and build a local list of all ELS IOs
734 * that need an ABTS. The IOs need to stay on the txcmplq so that
735 * the abort operation completes them successfully.
736 */
737 pring = phba->sli4_hba.nvmels_wq->pring;
738 spin_lock_irq(&phba->hbalock);
739 spin_lock(&pring->ring_lock);
740 list_for_each_entry_safe(wqe, next_wqe, &pring->txcmplq, list) {
741 /* Add to abort_list on on NDLP match. */
742 if (lpfc_check_sli_ndlp(phba, pring, wqe, ndlp)) {
743 wqe->iocb_flag |= LPFC_DRIVER_ABORTED;
744 list_add_tail(&wqe->dlist, &abort_list);
745 }
746 }
747 spin_unlock(&pring->ring_lock);
748 spin_unlock_irq(&phba->hbalock);
749
750 /* Abort the targeted IOs and remove them from the abort list. */
751 list_for_each_entry_safe(wqe, next_wqe, &abort_list, dlist) {
4b056682 752 atomic_inc(&lport->xmt_ls_abort);
01649561
JS		 753 spin_lock_irq(&phba->hbalock);
754 list_del_init(&wqe->dlist);
755 lpfc_sli_issue_abort_iotag(phba, pring, wqe);
756 spin_unlock_irq(&phba->hbalock);
757 }
758}
759
760/* Fix up the existing sgls for NVME IO. */
5fd11085 761static inline void
01649561
JS		 762lpfc_nvme_adj_fcp_sgls(struct lpfc_vport *vport,
763 struct lpfc_nvme_buf *lpfc_ncmd,
764 struct nvmefc_fcp_req *nCmd)
765{
4e565cf0 766 struct lpfc_hba *phba = vport->phba;
01649561
JS		 767 struct sli4_sge *sgl;
768 union lpfc_wqe128 *wqe;
769 uint32_t *wptr, *dptr;
770
4e565cf0
JS		 771 /*
772 * Get a local pointer to the built-in wqe and correct
773 * the cmd size to match NVME's 96 bytes and fix
774 * the dma address.
775 */
776
205e8240 777 wqe = &lpfc_ncmd->cur_iocbq.wqe;
4e565cf0 778
01649561
JS		 779 /*
780 * Adjust the FCP_CMD and FCP_RSP DMA data and sge_len to
781 * match NVME. NVME sends 96 bytes. Also, use the
782 * nvme commands command and response dma addresses
783 * rather than the virtual memory to ease the restore
784 * operation.
785 */
0794d601 786 sgl = lpfc_ncmd->dma_sgl;
01649561 787 sgl->sge_len = cpu_to_le32(nCmd->cmdlen);
4e565cf0
JS		 788 if (phba->cfg_nvme_embed_cmd) {
789 sgl->addr_hi = 0;
790 sgl->addr_lo = 0;
791
792 /* Word 0-2 - NVME CMND IU (embedded payload) */
793 wqe->generic.bde.tus.f.bdeFlags = BUFF_TYPE_BDE_IMMED;
794 wqe->generic.bde.tus.f.bdeSize = 56;
795 wqe->generic.bde.addrHigh = 0;
796 wqe->generic.bde.addrLow = 64; /* Word 16 */
5fd11085
JS		 797
798 /* Word 10 - dbde is 0, wqes is 1 in template */
799
800 /*
801 * Embed the payload in the last half of the WQE
802 * WQE words 16-30 get the NVME CMD IU payload
803 *
804 * WQE words 16-19 get payload Words 1-4
805 * WQE words 20-21 get payload Words 6-7
806 * WQE words 22-29 get payload Words 16-23
807 */
808 wptr = &wqe->words[16]; /* WQE ptr */
809 dptr = (uint32_t *)nCmd->cmdaddr; /* payload ptr */
810 dptr++; /* Skip Word 0 in payload */
811
812 *wptr++ = *dptr++; /* Word 1 */
813 *wptr++ = *dptr++; /* Word 2 */
814 *wptr++ = *dptr++; /* Word 3 */
815 *wptr++ = *dptr++; /* Word 4 */
816 dptr++; /* Skip Word 5 in payload */
817 *wptr++ = *dptr++; /* Word 6 */
818 *wptr++ = *dptr++; /* Word 7 */
819 dptr += 8; /* Skip Words 8-15 in payload */
820 *wptr++ = *dptr++; /* Word 16 */
821 *wptr++ = *dptr++; /* Word 17 */
822 *wptr++ = *dptr++; /* Word 18 */
823 *wptr++ = *dptr++; /* Word 19 */
824 *wptr++ = *dptr++; /* Word 20 */
825 *wptr++ = *dptr++; /* Word 21 */
826 *wptr++ = *dptr++; /* Word 22 */
827 *wptr = *dptr; /* Word 23 */
4e565cf0
JS		 828 } else {
829 sgl->addr_hi = cpu_to_le32(putPaddrHigh(nCmd->cmddma));
830 sgl->addr_lo = cpu_to_le32(putPaddrLow(nCmd->cmddma));
831
832 /* Word 0-2 - NVME CMND IU Inline BDE */
833 wqe->generic.bde.tus.f.bdeFlags = BUFF_TYPE_BDE_64;
834 wqe->generic.bde.tus.f.bdeSize = nCmd->cmdlen;
835 wqe->generic.bde.addrHigh = sgl->addr_hi;
836 wqe->generic.bde.addrLow = sgl->addr_lo;
5fd11085
JS		 837
838 /* Word 10 */
839 bf_set(wqe_dbde, &wqe->generic.wqe_com, 1);
840 bf_set(wqe_wqes, &wqe->generic.wqe_com, 0);
4e565cf0 841 }
01649561
JS		 842
843 sgl++;
844
845 /* Setup the physical region for the FCP RSP */
846 sgl->addr_hi = cpu_to_le32(putPaddrHigh(nCmd->rspdma));
847 sgl->addr_lo = cpu_to_le32(putPaddrLow(nCmd->rspdma));
848 sgl->word2 = le32_to_cpu(sgl->word2);
849 if (nCmd->sg_cnt)
850 bf_set(lpfc_sli4_sge_last, sgl, 0);
851 else
852 bf_set(lpfc_sli4_sge_last, sgl, 1);
853 sgl->word2 = cpu_to_le32(sgl->word2);
854 sgl->sge_len = cpu_to_le32(nCmd->rsplen);
01649561
JS		 855}
856
bd2cdd5e
JS		 857#ifdef CONFIG_SCSI_LPFC_DEBUG_FS
858static void
859lpfc_nvme_ktime(struct lpfc_hba *phba,
860 struct lpfc_nvme_buf *lpfc_ncmd)
861{
862 uint64_t seg1, seg2, seg3, seg4;
c8a4ce0b 863 uint64_t segsum;
bd2cdd5e 864
bd2cdd5e
JS		 865 if (!lpfc_ncmd->ts_last_cmd ||
866 !lpfc_ncmd->ts_cmd_start ||
867 !lpfc_ncmd->ts_cmd_wqput ||
868 !lpfc_ncmd->ts_isr_cmpl ||
869 !lpfc_ncmd->ts_data_nvme)
870 return;
c8a4ce0b
DK		 871
872 if (lpfc_ncmd->ts_data_nvme < lpfc_ncmd->ts_cmd_start)
873 return;
bd2cdd5e
JS		 874 if (lpfc_ncmd->ts_cmd_start < lpfc_ncmd->ts_last_cmd)
875 return;
876 if (lpfc_ncmd->ts_cmd_wqput < lpfc_ncmd->ts_cmd_start)
877 return;
878 if (lpfc_ncmd->ts_isr_cmpl < lpfc_ncmd->ts_cmd_wqput)
879 return;
880 if (lpfc_ncmd->ts_data_nvme < lpfc_ncmd->ts_isr_cmpl)
881 return;
882 /*
883 * Segment 1 - Time from Last FCP command cmpl is handed
884 * off to NVME Layer to start of next command.
885 * Segment 2 - Time from Driver receives a IO cmd start
886 * from NVME Layer to WQ put is done on IO cmd.
887 * Segment 3 - Time from Driver WQ put is done on IO cmd
888 * to MSI-X ISR for IO cmpl.
889 * Segment 4 - Time from MSI-X ISR for IO cmpl to when
890 * cmpl is handled off to the NVME Layer.
891 */
892 seg1 = lpfc_ncmd->ts_cmd_start - lpfc_ncmd->ts_last_cmd;
c8a4ce0b
DK		 893 if (seg1 > 5000000) /* 5 ms - for sequential IOs only */
894 seg1 = 0;
bd2cdd5e
JS		 895
896 /* Calculate times relative to start of IO */
897 seg2 = (lpfc_ncmd->ts_cmd_wqput - lpfc_ncmd->ts_cmd_start);
c8a4ce0b
DK		 898 segsum = seg2;
899 seg3 = lpfc_ncmd->ts_isr_cmpl - lpfc_ncmd->ts_cmd_start;
900 if (segsum > seg3)
901 return;
902 seg3 -= segsum;
903 segsum += seg3;
904
905 seg4 = lpfc_ncmd->ts_data_nvme - lpfc_ncmd->ts_cmd_start;
906 if (segsum > seg4)
907 return;
908 seg4 -= segsum;
909
bd2cdd5e
JS		 910 phba->ktime_data_samples++;
911 phba->ktime_seg1_total += seg1;
912 if (seg1 < phba->ktime_seg1_min)
913 phba->ktime_seg1_min = seg1;
914 else if (seg1 > phba->ktime_seg1_max)
915 phba->ktime_seg1_max = seg1;
916 phba->ktime_seg2_total += seg2;
917 if (seg2 < phba->ktime_seg2_min)
918 phba->ktime_seg2_min = seg2;
919 else if (seg2 > phba->ktime_seg2_max)
920 phba->ktime_seg2_max = seg2;
921 phba->ktime_seg3_total += seg3;
922 if (seg3 < phba->ktime_seg3_min)
923 phba->ktime_seg3_min = seg3;
924 else if (seg3 > phba->ktime_seg3_max)
925 phba->ktime_seg3_max = seg3;
926 phba->ktime_seg4_total += seg4;
927 if (seg4 < phba->ktime_seg4_min)
928 phba->ktime_seg4_min = seg4;
929 else if (seg4 > phba->ktime_seg4_max)
930 phba->ktime_seg4_max = seg4;
931
932 lpfc_ncmd->ts_last_cmd = 0;
933 lpfc_ncmd->ts_cmd_start = 0;
934 lpfc_ncmd->ts_cmd_wqput = 0;
935 lpfc_ncmd->ts_isr_cmpl = 0;
936 lpfc_ncmd->ts_data_nvme = 0;
937}
938#endif
939
01649561
JS		 940/**
941 * lpfc_nvme_io_cmd_wqe_cmpl - Complete an NVME-over-FCP IO
942 * @lpfc_pnvme: Pointer to the driver's nvme instance data
943 * @lpfc_nvme_lport: Pointer to the driver's local port data
944 * @lpfc_nvme_rport: Pointer to the rport getting the @lpfc_nvme_ereq
945 *
946 * Driver registers this routine as it io request handler. This
947 * routine issues an fcp WQE with data from the @lpfc_nvme_fcpreq
948 * data structure to the rport indicated in @lpfc_nvme_rport.
949 *
950 * Return value :
951 * 0 - Success
952 * TODO: What are the failure codes.
953 **/
954static void
955lpfc_nvme_io_cmd_wqe_cmpl(struct lpfc_hba *phba, struct lpfc_iocbq *pwqeIn,
956 struct lpfc_wcqe_complete *wcqe)
957{
958 struct lpfc_nvme_buf *lpfc_ncmd =
959 (struct lpfc_nvme_buf *)pwqeIn->context1;
960 struct lpfc_vport *vport = pwqeIn->vport;
961 struct nvmefc_fcp_req *nCmd;
962 struct nvme_fc_ersp_iu *ep;
963 struct nvme_fc_cmd_iu *cp;
01649561 964 struct lpfc_nodelist *ndlp;
bbe3012b 965 struct lpfc_nvme_fcpreq_priv *freqpriv;
4b056682 966 struct lpfc_nvme_lport *lport;
66a210ff 967 struct lpfc_nvme_ctrl_stat *cstat;
63df6d63 968 uint32_t code, status, idx, cpu;
01649561
JS		 969 uint16_t cid, sqhd, data;
970 uint32_t *ptr;
971
972 /* Sanity check on return of outstanding command */
0b05e9fe 973 if (!lpfc_ncmd || !lpfc_ncmd->nvmeCmd) {
4d5e789a
JS		 974 if (!lpfc_ncmd) {
975 lpfc_printf_vlog(vport, KERN_ERR,
976 LOG_NODE | LOG_NVME_IOERR,
977 "6071 Null lpfc_ncmd pointer. No "
978 "release, skip completion\n");
979 return;
980 }
981
01649561 982 lpfc_printf_vlog(vport, KERN_ERR, LOG_NODE | LOG_NVME_IOERR,
4d5e789a 983 "6066 Missing cmpl ptrs: lpfc_ncmd %p, "
0b05e9fe
JS		 984 "nvmeCmd %p\n",
985 lpfc_ncmd, lpfc_ncmd->nvmeCmd);
4d5e789a
JS		 986
987 /* Release the lpfc_ncmd regardless of the missing elements. */
988 lpfc_release_nvme_buf(phba, lpfc_ncmd);
01649561
JS		 989 return;
990 }
01649561 991 nCmd = lpfc_ncmd->nvmeCmd;
4b056682 992 status = bf_get(lpfc_wcqe_c_status, wcqe);
66a210ff 993
66a85155
JS		 994 if (vport->localport) {
995 lport = (struct lpfc_nvme_lport *)vport->localport->private;
996 if (lport) {
997 idx = lpfc_ncmd->cur_iocbq.hba_wqidx;
998 cstat = &lport->cstat[idx];
999 atomic_inc(&cstat->fc4NvmeIoCmpls);
1000 if (status) {
1001 if (bf_get(lpfc_wcqe_c_xb, wcqe))
1002 atomic_inc(&lport->cmpl_fcp_xb);
1003 atomic_inc(&lport->cmpl_fcp_err);
1004 }
66a210ff 1005 }
4b056682 1006 }
01649561 1007
bd2cdd5e
JS		 1008 lpfc_nvmeio_data(phba, "NVME FCP CMPL: xri x%x stat x%x parm x%x\n",
1009 lpfc_ncmd->cur_iocbq.sli4_xritag,
4b056682 1010 status, wcqe->parameter);
01649561
JS		 1011 /*
1012 * Catch race where our node has transitioned, but the
1013 * transport is still transitioning.
1014 */
0b05e9fe 1015 ndlp = lpfc_ncmd->ndlp;
01649561 1016 if (!ndlp || !NLP_CHK_NODE_ACT(ndlp)) {
0b05e9fe
JS		 1017 lpfc_printf_vlog(vport, KERN_ERR, LOG_NVME_IOERR,
1018 "6062 Ignoring NVME cmpl. No ndlp\n");
1019 goto out_err;
01649561
JS		 1020 }
1021
1022 code = bf_get(lpfc_wcqe_c_code, wcqe);
1023 if (code == CQE_CODE_NVME_ERSP) {
1024 /* For this type of CQE, we need to rebuild the rsp */
1025 ep = (struct nvme_fc_ersp_iu *)nCmd->rspaddr;
1026
1027 /*
1028 * Get Command Id from cmd to plug into response. This
1029 * code is not needed in the next NVME Transport drop.
1030 */
1031 cp = (struct nvme_fc_cmd_iu *)nCmd->cmdaddr;
1032 cid = cp->sqe.common.command_id;
1033
1034 /*
1035 * RSN is in CQE word 2
1036 * SQHD is in CQE Word 3 bits 15:0
1037 * Cmd Specific info is in CQE Word 1
1038 * and in CQE Word 0 bits 15:0
1039 */
1040 sqhd = bf_get(lpfc_wcqe_c_sqhead, wcqe);
1041
1042 /* Now lets build the NVME ERSP IU */
1043 ep->iu_len = cpu_to_be16(8);
1044 ep->rsn = wcqe->parameter;
1045 ep->xfrd_len = cpu_to_be32(nCmd->payload_length);
1046 ep->rsvd12 = 0;
1047 ptr = (uint32_t *)&ep->cqe.result.u64;
1048 *ptr++ = wcqe->total_data_placed;
1049 data = bf_get(lpfc_wcqe_c_ersp0, wcqe);
1050 *ptr = (uint32_t)data;
1051 ep->cqe.sq_head = sqhd;
1052 ep->cqe.sq_id = nCmd->sqid;
1053 ep->cqe.command_id = cid;
1054 ep->cqe.status = 0;
1055
1056 lpfc_ncmd->status = IOSTAT_SUCCESS;
1057 lpfc_ncmd->result = 0;
1058 nCmd->rcv_rsplen = LPFC_NVME_ERSP_LEN;
1059 nCmd->transferred_length = nCmd->payload_length;
1060 } else {
4b056682 1061 lpfc_ncmd->status = (status & LPFC_IOCB_STATUS_MASK);
952c303b 1062 lpfc_ncmd->result = (wcqe->parameter & IOERR_PARAM_MASK);
01649561
JS		 1063
1064 /* For NVME, the only failure path that results in an
1065 * IO error is when the adapter rejects it. All other
1066 * conditions are a success case and resolved by the
1067 * transport.
1068 * IOSTAT_FCP_RSP_ERROR means:
1069 * 1. Length of data received doesn't match total
1070 * transfer length in WQE
1071 * 2. If the RSP payload does NOT match these cases:
1072 * a. RSP length 12/24 bytes and all zeros
1073 * b. NVME ERSP
1074 */
1075 switch (lpfc_ncmd->status) {
1076 case IOSTAT_SUCCESS:
1077 nCmd->transferred_length = wcqe->total_data_placed;
1078 nCmd->rcv_rsplen = 0;
1079 nCmd->status = 0;
1080 break;
1081 case IOSTAT_FCP_RSP_ERROR:
1082 nCmd->transferred_length = wcqe->total_data_placed;
1083 nCmd->rcv_rsplen = wcqe->parameter;
1084 nCmd->status = 0;
1085 /* Sanity check */
1086 if (nCmd->rcv_rsplen == LPFC_NVME_ERSP_LEN)
1087 break;
1088 lpfc_printf_vlog(vport, KERN_ERR, LOG_NVME_IOERR,
1089 "6081 NVME Completion Protocol Error: "
86c67379
JS		 1090 "xri %x status x%x result x%x "
1091 "placed x%x\n",
1092 lpfc_ncmd->cur_iocbq.sli4_xritag,
01649561
JS		 1093 lpfc_ncmd->status, lpfc_ncmd->result,
1094 wcqe->total_data_placed);
1095 break;
952c303b
DK		 1096 case IOSTAT_LOCAL_REJECT:
1097 /* Let fall through to set command final state. */
1098 if (lpfc_ncmd->result == IOERR_ABORT_REQUESTED)
1099 lpfc_printf_vlog(vport, KERN_INFO,
1100 LOG_NVME_IOERR,
1101 "6032 Delay Aborted cmd %p "
1102 "nvme cmd %p, xri x%x, "
1103 "xb %d\n",
1104 lpfc_ncmd, nCmd,
1105 lpfc_ncmd->cur_iocbq.sli4_xritag,
1106 bf_get(lpfc_wcqe_c_xb, wcqe));
01649561
JS		 1107 default:
1108out_err:
e3246a12 1109 lpfc_printf_vlog(vport, KERN_INFO, LOG_NVME_IOERR,
86c67379 1110 "6072 NVME Completion Error: xri %x "
01649561 1111 "status x%x result x%x placed x%x\n",
86c67379 1112 lpfc_ncmd->cur_iocbq.sli4_xritag,
01649561
JS		 1113 lpfc_ncmd->status, lpfc_ncmd->result,
1114 wcqe->total_data_placed);
1115 nCmd->transferred_length = 0;
1116 nCmd->rcv_rsplen = 0;
8e009ce8 1117 nCmd->status = NVME_SC_INTERNAL;
01649561
JS		 1118 }
1119 }
1120
1121 /* pick up SLI4 exhange busy condition */
1122 if (bf_get(lpfc_wcqe_c_xb, wcqe))
1123 lpfc_ncmd->flags |= LPFC_SBUF_XBUSY;
1124 else
1125 lpfc_ncmd->flags &= ~LPFC_SBUF_XBUSY;
1126
01649561
JS		 1127 /* Update stats and complete the IO. There is
1128 * no need for dma unprep because the nvme_transport
1129 * owns the dma address.
1130 */
bd2cdd5e 1131#ifdef CONFIG_SCSI_LPFC_DEBUG_FS
c8a4ce0b 1132 if (lpfc_ncmd->ts_cmd_start) {
bd2cdd5e
JS		 1133 lpfc_ncmd->ts_isr_cmpl = pwqeIn->isr_timestamp;
1134 lpfc_ncmd->ts_data_nvme = ktime_get_ns();
1135 phba->ktime_last_cmd = lpfc_ncmd->ts_data_nvme;
1136 lpfc_nvme_ktime(phba, lpfc_ncmd);
1137 }
1138 if (phba->cpucheck_on & LPFC_CHECK_NVME_IO) {
63df6d63
JS		 1139 idx = lpfc_ncmd->cur_iocbq.hba_wqidx;
1140 cpu = smp_processor_id();
1141 if (cpu < LPFC_CHECK_CPU_CNT) {
1142 if (lpfc_ncmd->cpu != cpu)
1143 lpfc_printf_vlog(vport,
1144 KERN_INFO, LOG_NVME_IOERR,
1145 "6701 CPU Check cmpl: "
1146 "cpu %d expect %d\n",
1147 cpu, lpfc_ncmd->cpu);
1148 phba->sli4_hba.hdwq[idx].cpucheck_cmpl_io[cpu]++;
1149 }
bd2cdd5e
JS		 1150 }
1151#endif
952c303b
DK		 1152
1153 /* NVME targets need completion held off until the abort exchange
add9d6be 1154 * completes unless the NVME Rport is getting unregistered.
952c303b 1155 */
add9d6be 1156
3fd78355 1157 if (!(lpfc_ncmd->flags & LPFC_SBUF_XBUSY)) {
91455b85
JS		 1158 freqpriv = nCmd->private;
1159 freqpriv->nvme_buf = NULL;
952c303b 1160 nCmd->done(nCmd);
3fd78355 1161 lpfc_ncmd->nvmeCmd = NULL;
add9d6be 1162 }
01649561 1163
952c303b 1164 /* Call release with XB=1 to queue the IO into the abort list. */
01649561
JS		 1165 lpfc_release_nvme_buf(phba, lpfc_ncmd);
1166}
1167
1168
1169/**
1170 * lpfc_nvme_prep_io_cmd - Issue an NVME-over-FCP IO
1171 * @lpfc_pnvme: Pointer to the driver's nvme instance data
1172 * @lpfc_nvme_lport: Pointer to the driver's local port data
1173 * @lpfc_nvme_rport: Pointer to the rport getting the @lpfc_nvme_ereq
1174 * @lpfc_nvme_fcreq: IO request from nvme fc to driver.
1175 * @hw_queue_handle: Driver-returned handle in lpfc_nvme_create_queue
1176 *
1177 * Driver registers this routine as it io request handler. This
1178 * routine issues an fcp WQE with data from the @lpfc_nvme_fcpreq
1179 * data structure to the rport indicated in @lpfc_nvme_rport.
1180 *
1181 * Return value :
1182 * 0 - Success
1183 * TODO: What are the failure codes.
1184 **/
1185static int
1186lpfc_nvme_prep_io_cmd(struct lpfc_vport *vport,
1187 struct lpfc_nvme_buf *lpfc_ncmd,
66a210ff
JS		 1188 struct lpfc_nodelist *pnode,
1189 struct lpfc_nvme_ctrl_stat *cstat)
01649561
JS		 1190{
1191 struct lpfc_hba *phba = vport->phba;
1192 struct nvmefc_fcp_req *nCmd = lpfc_ncmd->nvmeCmd;
1193 struct lpfc_iocbq *pwqeq = &(lpfc_ncmd->cur_iocbq);
205e8240 1194 union lpfc_wqe128 *wqe = &pwqeq->wqe;
01649561
JS		 1195 uint32_t req_len;
1196
e960f5ab 1197 if (!NLP_CHK_NODE_ACT(pnode))
01649561
JS		 1198 return -EINVAL;
1199
1200 /*
1201 * There are three possibilities here - use scatter-gather segment, use
1202 * the single mapping, or neither.
1203 */
01649561
JS		 1204 if (nCmd->sg_cnt) {
1205 if (nCmd->io_dir == NVMEFC_FCP_WRITE) {
5fd11085
JS		 1206 /* From the iwrite template, initialize words 7 - 11 */
1207 memcpy(&wqe->words[7],
1208 &lpfc_iwrite_cmd_template.words[7],
1209 sizeof(uint32_t) * 5);
1210
1211 /* Word 4 */
1212 wqe->fcp_iwrite.total_xfer_len = nCmd->payload_length;
1213
01649561
JS		 1214 /* Word 5 */
1215 if ((phba->cfg_nvme_enable_fb) &&
1216 (pnode->nlp_flag & NLP_FIRSTBURST)) {
1217 req_len = lpfc_ncmd->nvmeCmd->payload_length;
1218 if (req_len < pnode->nvme_fb_size)
1219 wqe->fcp_iwrite.initial_xfer_len =
1220 req_len;
1221 else
1222 wqe->fcp_iwrite.initial_xfer_len =
1223 pnode->nvme_fb_size;
5fd11085
JS		 1224 } else {
1225 wqe->fcp_iwrite.initial_xfer_len = 0;
01649561 1226 }
66a210ff 1227 atomic_inc(&cstat->fc4NvmeOutputRequests);
01649561 1228 } else {
5fd11085
JS		 1229 /* From the iread template, initialize words 7 - 11 */
1230 memcpy(&wqe->words[7],
1231 &lpfc_iread_cmd_template.words[7],
1232 sizeof(uint32_t) * 5);
1233
1234 /* Word 4 */
1235 wqe->fcp_iread.total_xfer_len = nCmd->payload_length;
1236
1237 /* Word 5 */
1238 wqe->fcp_iread.rsrvd5 = 0;
01649561 1239
66a210ff 1240 atomic_inc(&cstat->fc4NvmeInputRequests);
01649561
JS		 1241 }
1242 } else {
5fd11085
JS		 1243 /* From the icmnd template, initialize words 4 - 11 */
1244 memcpy(&wqe->words[4], &lpfc_icmnd_cmd_template.words[4],
1245 sizeof(uint32_t) * 8);
66a210ff 1246 atomic_inc(&cstat->fc4NvmeControlRequests);
01649561
JS		 1247 }
1248 /*
1249 * Finish initializing those WQE fields that are independent
1250 * of the nvme_cmnd request_buffer
1251 */
1252
5fd11085
JS		 1253 /* Word 3 */
1254 bf_set(payload_offset_len, &wqe->fcp_icmd,
1255 (nCmd->rsplen + nCmd->cmdlen));
1256
01649561
JS		 1257 /* Word 6 */
1258 bf_set(wqe_ctxt_tag, &wqe->generic.wqe_com,
1259 phba->sli4_hba.rpi_ids[pnode->nlp_rpi]);
1260 bf_set(wqe_xri_tag, &wqe->generic.wqe_com, pwqeq->sli4_xritag);
1261
01649561
JS		 1262 /* Word 8 */
1263 wqe->generic.wqe_com.abort_tag = pwqeq->iotag;
1264
1265 /* Word 9 */
1266 bf_set(wqe_reqtag, &wqe->generic.wqe_com, pwqeq->iotag);
1267
414abe0a
JS		 1268 /* Words 13 14 15 are for PBDE support */
1269
01649561
JS		 1270 pwqeq->vport = vport;
1271 return 0;
1272}
1273
1274
1275/**
1276 * lpfc_nvme_prep_io_dma - Issue an NVME-over-FCP IO
1277 * @lpfc_pnvme: Pointer to the driver's nvme instance data
1278 * @lpfc_nvme_lport: Pointer to the driver's local port data
1279 * @lpfc_nvme_rport: Pointer to the rport getting the @lpfc_nvme_ereq
1280 * @lpfc_nvme_fcreq: IO request from nvme fc to driver.
1281 * @hw_queue_handle: Driver-returned handle in lpfc_nvme_create_queue
1282 *
1283 * Driver registers this routine as it io request handler. This
1284 * routine issues an fcp WQE with data from the @lpfc_nvme_fcpreq
1285 * data structure to the rport indicated in @lpfc_nvme_rport.
1286 *
1287 * Return value :
1288 * 0 - Success
1289 * TODO: What are the failure codes.
1290 **/
1291static int
1292lpfc_nvme_prep_io_dma(struct lpfc_vport *vport,
1293 struct lpfc_nvme_buf *lpfc_ncmd)
1294{
1295 struct lpfc_hba *phba = vport->phba;
1296 struct nvmefc_fcp_req *nCmd = lpfc_ncmd->nvmeCmd;
205e8240 1297 union lpfc_wqe128 *wqe = &lpfc_ncmd->cur_iocbq.wqe;
0794d601 1298 struct sli4_sge *sgl = lpfc_ncmd->dma_sgl;
01649561
JS		 1299 struct scatterlist *data_sg;
1300 struct sli4_sge *first_data_sgl;
0bc2b7c5 1301 struct ulp_bde64 *bde;
01649561
JS		 1302 dma_addr_t physaddr;
1303 uint32_t num_bde = 0;
1304 uint32_t dma_len;
1305 uint32_t dma_offset = 0;
1306 int nseg, i;
1307
1308 /* Fix up the command and response DMA stuff. */
1309 lpfc_nvme_adj_fcp_sgls(vport, lpfc_ncmd, nCmd);
1310
1311 /*
1312 * There are three possibilities here - use scatter-gather segment, use
1313 * the single mapping, or neither.
1314 */
1315 if (nCmd->sg_cnt) {
1316 /*
1317 * Jump over the cmd and rsp SGEs. The fix routine
1318 * has already adjusted for this.
1319 */
1320 sgl += 2;
1321
1322 first_data_sgl = sgl;
1323 lpfc_ncmd->seg_cnt = nCmd->sg_cnt;
81e6a637 1324 if (lpfc_ncmd->seg_cnt > lpfc_nvme_template.max_sgl_segments) {
01649561
JS		 1325 lpfc_printf_log(phba, KERN_ERR, LOG_NVME_IOERR,
1326 "6058 Too many sg segments from "
1327 "NVME Transport. Max %d, "
1328 "nvmeIO sg_cnt %d\n",
29bfd55a 1329 phba->cfg_nvme_seg_cnt + 1,
01649561
JS		 1330 lpfc_ncmd->seg_cnt);
1331 lpfc_ncmd->seg_cnt = 0;
1332 return 1;
1333 }
1334
1335 /*
1336 * The driver established a maximum scatter-gather segment count
1337 * during probe that limits the number of sg elements in any
1338 * single nvme command. Just run through the seg_cnt and format
1339 * the sge's.
1340 */
1341 nseg = nCmd->sg_cnt;
1342 data_sg = nCmd->first_sgl;
1343 for (i = 0; i < nseg; i++) {
1344 if (data_sg == NULL) {
1345 lpfc_printf_log(phba, KERN_ERR, LOG_NVME_IOERR,
1346 "6059 dptr err %d, nseg %d\n",
1347 i, nseg);
1348 lpfc_ncmd->seg_cnt = 0;
1349 return 1;
1350 }
1351 physaddr = data_sg->dma_address;
1352 dma_len = data_sg->length;
1353 sgl->addr_lo = cpu_to_le32(putPaddrLow(physaddr));
1354 sgl->addr_hi = cpu_to_le32(putPaddrHigh(physaddr));
1355 sgl->word2 = le32_to_cpu(sgl->word2);
1356 if ((num_bde + 1) == nseg)
1357 bf_set(lpfc_sli4_sge_last, sgl, 1);
1358 else
1359 bf_set(lpfc_sli4_sge_last, sgl, 0);
1360 bf_set(lpfc_sli4_sge_offset, sgl, dma_offset);
1361 bf_set(lpfc_sli4_sge_type, sgl, LPFC_SGE_TYPE_DATA);
1362 sgl->word2 = cpu_to_le32(sgl->word2);
1363 sgl->sge_len = cpu_to_le32(dma_len);
1364
1365 dma_offset += dma_len;
1366 data_sg = sg_next(data_sg);
1367 sgl++;
1368 }
414abe0a 1369 if (phba->cfg_enable_pbde) {
0bc2b7c5
JS		 1370 /* Use PBDE support for first SGL only, offset == 0 */
1371 /* Words 13-15 */
1372 bde = (struct ulp_bde64 *)
1373 &wqe->words[13];
1374 bde->addrLow = first_data_sgl->addr_lo;
1375 bde->addrHigh = first_data_sgl->addr_hi;
1376 bde->tus.f.bdeSize =
1377 le32_to_cpu(first_data_sgl->sge_len);
1378 bde->tus.f.bdeFlags = BUFF_TYPE_BDE_64;
1379 bde->tus.w = cpu_to_le32(bde->tus.w);
5fd11085
JS		 1380 /* wqe_pbde is 1 in template */
1381 } else {
1382 memset(&wqe->words[13], 0, (sizeof(uint32_t) * 3));
0bc2b7c5 1383 bf_set(wqe_pbde, &wqe->generic.wqe_com, 0);
5fd11085 1384 }
0bc2b7c5 1385
414abe0a 1386 } else {
0794d601
JS		 1387 lpfc_ncmd->seg_cnt = 0;
1388
01649561
JS		 1389 /* For this clause to be valid, the payload_length
1390 * and sg_cnt must zero.
1391 */
1392 if (nCmd->payload_length != 0) {
1393 lpfc_printf_log(phba, KERN_ERR, LOG_NVME_IOERR,
1394 "6063 NVME DMA Prep Err: sg_cnt %d "
1395 "payload_length x%x\n",
1396 nCmd->sg_cnt, nCmd->payload_length);
1397 return 1;
1398 }
1399 }
01649561
JS		 1400 return 0;
1401}
1402
1403/**
1404 * lpfc_nvme_fcp_io_submit - Issue an NVME-over-FCP IO
1405 * @lpfc_pnvme: Pointer to the driver's nvme instance data
1406 * @lpfc_nvme_lport: Pointer to the driver's local port data
1407 * @lpfc_nvme_rport: Pointer to the rport getting the @lpfc_nvme_ereq
1408 * @lpfc_nvme_fcreq: IO request from nvme fc to driver.
1409 * @hw_queue_handle: Driver-returned handle in lpfc_nvme_create_queue
1410 *
1411 * Driver registers this routine as it io request handler. This
1412 * routine issues an fcp WQE with data from the @lpfc_nvme_fcpreq
1413 * data structure to the rport
1414 indicated in @lpfc_nvme_rport.
1415 *
1416 * Return value :
1417 * 0 - Success
1418 * TODO: What are the failure codes.
1419 **/
1420static int
1421lpfc_nvme_fcp_io_submit(struct nvme_fc_local_port *pnvme_lport,
1422 struct nvme_fc_remote_port *pnvme_rport,
1423 void *hw_queue_handle,
1424 struct nvmefc_fcp_req *pnvme_fcreq)
1425{
1426 int ret = 0;
cf1a1d3e 1427 int expedite = 0;
63df6d63 1428 int idx, cpu;
01649561 1429 struct lpfc_nvme_lport *lport;
66a210ff 1430 struct lpfc_nvme_ctrl_stat *cstat;
01649561
JS		 1431 struct lpfc_vport *vport;
1432 struct lpfc_hba *phba;
1433 struct lpfc_nodelist *ndlp;
1434 struct lpfc_nvme_buf *lpfc_ncmd;
1435 struct lpfc_nvme_rport *rport;
1436 struct lpfc_nvme_qhandle *lpfc_queue_info;
c3725bdc 1437 struct lpfc_nvme_fcpreq_priv *freqpriv;
cf1a1d3e 1438 struct nvme_common_command *sqe;
bd2cdd5e
JS		 1439#ifdef CONFIG_SCSI_LPFC_DEBUG_FS
1440 uint64_t start = 0;
1441#endif
01649561 1442
c3725bdc
JS		 1443 /* Validate pointers. LLDD fault handling with transport does
1444 * have timing races.
1445 */
01649561 1446 lport = (struct lpfc_nvme_lport *)pnvme_lport->private;
c3725bdc
JS		 1447 if (unlikely(!lport)) {
1448 ret = -EINVAL;
1449 goto out_fail;
1450 }
1451
01649561 1452 vport = lport->vport;
c3725bdc
JS		 1453
1454 if (unlikely(!hw_queue_handle)) {
44c2757b
JS		 1455 lpfc_printf_vlog(vport, KERN_INFO, LOG_NVME_IOERR,
1456 "6117 Fail IO, NULL hw_queue_handle\n");
1457 atomic_inc(&lport->xmt_fcp_err);
cd240071 1458 ret = -EBUSY;
c3725bdc
JS		 1459 goto out_fail;
1460 }
1461
01649561
JS		 1462 phba = vport->phba;
1463
1abcb371
DK		 1464 if (vport->load_flag & FC_UNLOADING) {
1465 ret = -ENODEV;
1466 goto out_fail;
1467 }
1468
3386f4bd 1469 if (vport->load_flag & FC_UNLOADING) {
44c2757b
JS		 1470 lpfc_printf_vlog(vport, KERN_INFO, LOG_NVME_IOERR,
1471 "6124 Fail IO, Driver unload\n");
1472 atomic_inc(&lport->xmt_fcp_err);
3386f4bd
JS		 1473 ret = -ENODEV;
1474 goto out_fail;
1475 }
1476
c3725bdc
JS		 1477 freqpriv = pnvme_fcreq->private;
1478 if (unlikely(!freqpriv)) {
44c2757b
JS		 1479 lpfc_printf_vlog(vport, KERN_INFO, LOG_NVME_IOERR,
1480 "6158 Fail IO, NULL request data\n");
1481 atomic_inc(&lport->xmt_fcp_err);
c3725bdc 1482 ret = -EINVAL;
b7672ae6
DK		 1483 goto out_fail;
1484 }
1485
bd2cdd5e
JS		 1486#ifdef CONFIG_SCSI_LPFC_DEBUG_FS
1487 if (phba->ktime_on)
1488 start = ktime_get_ns();
1489#endif
01649561
JS		 1490 rport = (struct lpfc_nvme_rport *)pnvme_rport->private;
1491 lpfc_queue_info = (struct lpfc_nvme_qhandle *)hw_queue_handle;
1492
1493 /*
1494 * Catch race where our node has transitioned, but the
1495 * transport is still transitioning.
1496 */
1497 ndlp = rport->ndlp;
1498 if (!ndlp || !NLP_CHK_NODE_ACT(ndlp)) {
44c2757b
JS		 1499 lpfc_printf_vlog(vport, KERN_INFO, LOG_NODE | LOG_NVME_IOERR,
1500 "6053 Fail IO, ndlp not ready: rport %p "
1501 "ndlp %p, DID x%06x\n",
01649561 1502 rport, ndlp, pnvme_rport->port_id);
44c2757b
JS		 1503 atomic_inc(&lport->xmt_fcp_err);
1504 ret = -EBUSY;
1505 goto out_fail;
01649561
JS		 1506 }
1507
1508 /* The remote node has to be a mapped target or it's an error. */
1509 if ((ndlp->nlp_type & NLP_NVME_TARGET) &&
1510 (ndlp->nlp_state != NLP_STE_MAPPED_NODE)) {
44c2757b
JS		 1511 lpfc_printf_vlog(vport, KERN_INFO, LOG_NODE | LOG_NVME_IOERR,
1512 "6036 Fail IO, DID x%06x not ready for "
cd240071 1513 "IO. State x%x, Type x%x Flg x%x\n",
44c2757b 1514 pnvme_rport->port_id,
cd240071
JS		 1515 ndlp->nlp_state, ndlp->nlp_type,
1516 ndlp->upcall_flags);
4b056682 1517 atomic_inc(&lport->xmt_fcp_bad_ndlp);
cd240071 1518 ret = -EBUSY;
01649561
JS		 1519 goto out_fail;
1520
1521 }
1522
cf1a1d3e
JS		 1523 /* Currently only NVME Keep alive commands should be expedited
1524 * if the driver runs out of a resource. These should only be
1525 * issued on the admin queue, qidx 0
1526 */
1527 if (!lpfc_queue_info->qidx && !pnvme_fcreq->sg_cnt) {
1528 sqe = &((struct nvme_fc_cmd_iu *)
1529 pnvme_fcreq->cmdaddr)->sqe.common;
1530 if (sqe->opcode == nvme_admin_keep_alive)
1531 expedite = 1;
1532 }
1533
01649561
JS		 1534 /* The node is shared with FCP IO, make sure the IO pending count does
1535 * not exceed the programmed depth.
1536 */
2a5b7d62
JS		 1537 if (lpfc_ndlp_check_qdepth(phba, ndlp)) {
1538 if ((atomic_read(&ndlp->cmd_pending) >= ndlp->cmd_qdepth) &&
1539 !expedite) {
1540 lpfc_printf_vlog(vport, KERN_INFO, LOG_NVME_IOERR,
1541 "6174 Fail IO, ndlp qdepth exceeded: "
1542 "idx %d DID %x pend %d qdepth %d\n",
1543 lpfc_queue_info->index, ndlp->nlp_DID,
1544 atomic_read(&ndlp->cmd_pending),
1545 ndlp->cmd_qdepth);
1546 atomic_inc(&lport->xmt_fcp_qdepth);
1547 ret = -EBUSY;
1548 goto out_fail;
1549 }
01649561
JS		 1550 }
1551
5e5b511d
JS		 1552 lpfc_ncmd = lpfc_get_nvme_buf(phba, ndlp,
1553 lpfc_queue_info->index, expedite);
01649561 1554 if (lpfc_ncmd == NULL) {
4b056682 1555 atomic_inc(&lport->xmt_fcp_noxri);
01649561 1556 lpfc_printf_vlog(vport, KERN_INFO, LOG_NVME_IOERR,
44c2757b
JS		 1557 "6065 Fail IO, driver buffer pool is empty: "
1558 "idx %d DID %x\n",
1559 lpfc_queue_info->index, ndlp->nlp_DID);
cd22d605 1560 ret = -EBUSY;
01649561
JS		 1561 goto out_fail;
1562 }
bd2cdd5e 1563#ifdef CONFIG_SCSI_LPFC_DEBUG_FS
c8a4ce0b 1564 if (start) {
bd2cdd5e
JS		 1565 lpfc_ncmd->ts_cmd_start = start;
1566 lpfc_ncmd->ts_last_cmd = phba->ktime_last_cmd;
c8a4ce0b
DK		 1567 } else {
1568 lpfc_ncmd->ts_cmd_start = 0;
bd2cdd5e
JS		 1569 }
1570#endif
01649561
JS		 1571
1572 /*
1573 * Store the data needed by the driver to issue, abort, and complete
1574 * an IO.
1575 * Do not let the IO hang out forever. There is no midlayer issuing
1576 * an abort so inform the FW of the maximum IO pending time.
1577 */
bbe3012b 1578 freqpriv->nvme_buf = lpfc_ncmd;
01649561 1579 lpfc_ncmd->nvmeCmd = pnvme_fcreq;
318083ad 1580 lpfc_ncmd->ndlp = ndlp;
0794d601 1581 lpfc_ncmd->qidx = lpfc_queue_info->qidx;
01649561 1582
01649561
JS		 1583 /*
1584 * Issue the IO on the WQ indicated by index in the hw_queue_handle.
1585 * This identfier was create in our hardware queue create callback
1586 * routine. The driver now is dependent on the IO queue steering from
1587 * the transport. We are trusting the upper NVME layers know which
1588 * index to use and that they have affinitized a CPU to this hardware
1589 * queue. A hardware queue maps to a driver MSI-X vector/EQ/CQ/WQ.
1590 */
66a210ff
JS		 1591 idx = lpfc_queue_info->index;
1592 lpfc_ncmd->cur_iocbq.hba_wqidx = idx;
1593 cstat = &lport->cstat[idx];
1594
1595 lpfc_nvme_prep_io_cmd(vport, lpfc_ncmd, ndlp, cstat);
1596 ret = lpfc_nvme_prep_io_dma(vport, lpfc_ncmd);
1597 if (ret) {
44c2757b
JS		 1598 lpfc_printf_vlog(vport, KERN_INFO, LOG_NVME_IOERR,
1599 "6175 Fail IO, Prep DMA: "
1600 "idx %d DID %x\n",
1601 lpfc_queue_info->index, ndlp->nlp_DID);
1602 atomic_inc(&lport->xmt_fcp_err);
66a210ff
JS		 1603 ret = -ENOMEM;
1604 goto out_free_nvme_buf;
1605 }
1606
bd2cdd5e
JS		 1607 lpfc_nvmeio_data(phba, "NVME FCP XMIT: xri x%x idx %d to %06x\n",
1608 lpfc_ncmd->cur_iocbq.sli4_xritag,
1609 lpfc_queue_info->index, ndlp->nlp_DID);
1610
01649561
JS		 1611 ret = lpfc_sli4_issue_wqe(phba, LPFC_FCP_RING, &lpfc_ncmd->cur_iocbq);
1612 if (ret) {
4b056682 1613 atomic_inc(&lport->xmt_fcp_wqerr);
e3246a12 1614 lpfc_printf_vlog(vport, KERN_INFO, LOG_NVME_IOERR,
44c2757b 1615 "6113 Fail IO, Could not issue WQE err %x "
01649561
JS		 1616 "sid: x%x did: x%x oxid: x%x\n",
1617 ret, vport->fc_myDID, ndlp->nlp_DID,
1618 lpfc_ncmd->cur_iocbq.sli4_xritag);
01649561
JS		 1619 goto out_free_nvme_buf;
1620 }
1621
bd2cdd5e 1622#ifdef CONFIG_SCSI_LPFC_DEBUG_FS
c8a4ce0b 1623 if (lpfc_ncmd->ts_cmd_start)
bd2cdd5e
JS		 1624 lpfc_ncmd->ts_cmd_wqput = ktime_get_ns();
1625
1626 if (phba->cpucheck_on & LPFC_CHECK_NVME_IO) {
63df6d63
JS		 1627 cpu = smp_processor_id();
1628 if (cpu < LPFC_CHECK_CPU_CNT) {
1629 lpfc_ncmd->cpu = cpu;
1630 if (idx != cpu)
bd2cdd5e 1631 lpfc_printf_vlog(vport,
63df6d63 1632 KERN_INFO, LOG_NVME_IOERR,
bd2cdd5e
JS		 1633 "6702 CPU Check cmd: "
1634 "cpu %d wq %d\n",
1635 lpfc_ncmd->cpu,
1636 lpfc_queue_info->index);
63df6d63 1637 phba->sli4_hba.hdwq[idx].cpucheck_xmt_io[cpu]++;
bd2cdd5e 1638 }
bd2cdd5e
JS		 1639 }
1640#endif
01649561
JS		 1641 return 0;
1642
1643 out_free_nvme_buf:
2cee7808
JS		 1644 if (lpfc_ncmd->nvmeCmd->sg_cnt) {
1645 if (lpfc_ncmd->nvmeCmd->io_dir == NVMEFC_FCP_WRITE)
66a210ff 1646 atomic_dec(&cstat->fc4NvmeOutputRequests);
2cee7808 1647 else
66a210ff 1648 atomic_dec(&cstat->fc4NvmeInputRequests);
2cee7808 1649 } else
66a210ff 1650 atomic_dec(&cstat->fc4NvmeControlRequests);
01649561
JS		 1651 lpfc_release_nvme_buf(phba, lpfc_ncmd);
1652 out_fail:
1653 return ret;
1654}
1655
1656/**
1657 * lpfc_nvme_abort_fcreq_cmpl - Complete an NVME FCP abort request.
1658 * @phba: Pointer to HBA context object
1659 * @cmdiocb: Pointer to command iocb object.
1660 * @rspiocb: Pointer to response iocb object.
1661 *
1662 * This is the callback function for any NVME FCP IO that was aborted.
1663 *
1664 * Return value:
1665 * None
1666 **/
1667void
1668lpfc_nvme_abort_fcreq_cmpl(struct lpfc_hba *phba, struct lpfc_iocbq *cmdiocb,
1669 struct lpfc_wcqe_complete *abts_cmpl)
1670{
e3246a12 1671 lpfc_printf_log(phba, KERN_INFO, LOG_NVME,
01649561
JS		 1672 "6145 ABORT_XRI_CN completing on rpi x%x "
1673 "original iotag x%x, abort cmd iotag x%x "
1674 "req_tag x%x, status x%x, hwstatus x%x\n",
1675 cmdiocb->iocb.un.acxri.abortContextTag,
1676 cmdiocb->iocb.un.acxri.abortIoTag,
1677 cmdiocb->iotag,
1678 bf_get(lpfc_wcqe_c_request_tag, abts_cmpl),
1679 bf_get(lpfc_wcqe_c_status, abts_cmpl),
1680 bf_get(lpfc_wcqe_c_hw_status, abts_cmpl));
1681 lpfc_sli_release_iocbq(phba, cmdiocb);
1682}
1683
1684/**
1685 * lpfc_nvme_fcp_abort - Issue an NVME-over-FCP ABTS
1686 * @lpfc_pnvme: Pointer to the driver's nvme instance data
1687 * @lpfc_nvme_lport: Pointer to the driver's local port data
1688 * @lpfc_nvme_rport: Pointer to the rport getting the @lpfc_nvme_ereq
1689 * @lpfc_nvme_fcreq: IO request from nvme fc to driver.
1690 * @hw_queue_handle: Driver-returned handle in lpfc_nvme_create_queue
1691 *
1692 * Driver registers this routine as its nvme request io abort handler. This
1693 * routine issues an fcp Abort WQE with data from the @lpfc_nvme_fcpreq
1694 * data structure to the rport indicated in @lpfc_nvme_rport. This routine
1695 * is executed asynchronously - one the target is validated as "MAPPED" and
1696 * ready for IO, the driver issues the abort request and returns.
1697 *
1698 * Return value:
1699 * None
1700 **/
1701static void
1702lpfc_nvme_fcp_abort(struct nvme_fc_local_port *pnvme_lport,
1703 struct nvme_fc_remote_port *pnvme_rport,
1704 void *hw_queue_handle,
1705 struct nvmefc_fcp_req *pnvme_fcreq)
1706{
1707 struct lpfc_nvme_lport *lport;
1708 struct lpfc_vport *vport;
1709 struct lpfc_hba *phba;
01649561
JS		 1710 struct lpfc_nvme_buf *lpfc_nbuf;
1711 struct lpfc_iocbq *abts_buf;
1712 struct lpfc_iocbq *nvmereq_wqe;
c3725bdc 1713 struct lpfc_nvme_fcpreq_priv *freqpriv;
205e8240 1714 union lpfc_wqe128 *abts_wqe;
01649561
JS		 1715 unsigned long flags;
1716 int ret_val;
1717
c3725bdc
JS		 1718 /* Validate pointers. LLDD fault handling with transport does
1719 * have timing races.
1720 */
01649561 1721 lport = (struct lpfc_nvme_lport *)pnvme_lport->private;
c3725bdc
JS		 1722 if (unlikely(!lport))
1723 return;
1724
01649561 1725 vport = lport->vport;
c3725bdc
JS		 1726
1727 if (unlikely(!hw_queue_handle)) {
1728 lpfc_printf_vlog(vport, KERN_INFO, LOG_NVME_ABTS,
1729 "6129 Fail Abort, HW Queue Handle NULL.\n");
1730 return;
1731 }
1732
01649561 1733 phba = vport->phba;
c3725bdc 1734 freqpriv = pnvme_fcreq->private;
01649561 1735
c3725bdc
JS		 1736 if (unlikely(!freqpriv))
1737 return;
3386f4bd
JS		 1738 if (vport->load_flag & FC_UNLOADING)
1739 return;
1740
01649561 1741 /* Announce entry to new IO submit field. */
86c67379 1742 lpfc_printf_vlog(vport, KERN_INFO, LOG_NVME_ABTS,
01649561
JS		 1743 "6002 Abort Request to rport DID x%06x "
1744 "for nvme_fc_req %p\n",
1745 pnvme_rport->port_id,
1746 pnvme_fcreq);
1747
01649561
JS		 1748 /* If the hba is getting reset, this flag is set. It is
1749 * cleared when the reset is complete and rings reestablished.
1750 */
1751 spin_lock_irqsave(&phba->hbalock, flags);
1752 /* driver queued commands are in process of being flushed */
1753 if (phba->hba_flag & HBA_NVME_IOQ_FLUSH) {
1754 spin_unlock_irqrestore(&phba->hbalock, flags);
86c67379 1755 lpfc_printf_vlog(vport, KERN_ERR, LOG_NVME_ABTS,
01649561
JS		 1756 "6139 Driver in reset cleanup - flushing "
1757 "NVME Req now. hba_flag x%x\n",
1758 phba->hba_flag);
1759 return;
1760 }
1761
bbe3012b 1762 lpfc_nbuf = freqpriv->nvme_buf;
01649561
JS		 1763 if (!lpfc_nbuf) {
1764 spin_unlock_irqrestore(&phba->hbalock, flags);
86c67379 1765 lpfc_printf_vlog(vport, KERN_ERR, LOG_NVME_ABTS,
01649561
JS		 1766 "6140 NVME IO req has no matching lpfc nvme "
1767 "io buffer. Skipping abort req.\n");
1768 return;
1769 } else if (!lpfc_nbuf->nvmeCmd) {
1770 spin_unlock_irqrestore(&phba->hbalock, flags);
86c67379 1771 lpfc_printf_vlog(vport, KERN_ERR, LOG_NVME_ABTS,
01649561
JS		 1772 "6141 lpfc NVME IO req has no nvme_fcreq "
1773 "io buffer. Skipping abort req.\n");
1774 return;
1775 }
2b7824d0 1776 nvmereq_wqe = &lpfc_nbuf->cur_iocbq;
01649561
JS		 1777
1778 /*
1779 * The lpfc_nbuf and the mapped nvme_fcreq in the driver's
1780 * state must match the nvme_fcreq passed by the nvme
1781 * transport. If they don't match, it is likely the driver
1782 * has already completed the NVME IO and the nvme transport
1783 * has not seen it yet.
1784 */
1785 if (lpfc_nbuf->nvmeCmd != pnvme_fcreq) {
1786 spin_unlock_irqrestore(&phba->hbalock, flags);
86c67379 1787 lpfc_printf_vlog(vport, KERN_ERR, LOG_NVME_ABTS,
01649561
JS		 1788 "6143 NVME req mismatch: "
1789 "lpfc_nbuf %p nvmeCmd %p, "
2b7824d0 1790 "pnvme_fcreq %p. Skipping Abort xri x%x\n",
01649561 1791 lpfc_nbuf, lpfc_nbuf->nvmeCmd,
2b7824d0 1792 pnvme_fcreq, nvmereq_wqe->sli4_xritag);
01649561
JS		 1793 return;
1794 }
1795
1796 /* Don't abort IOs no longer on the pending queue. */
01649561
JS		 1797 if (!(nvmereq_wqe->iocb_flag & LPFC_IO_ON_TXCMPLQ)) {
1798 spin_unlock_irqrestore(&phba->hbalock, flags);
86c67379 1799 lpfc_printf_vlog(vport, KERN_ERR, LOG_NVME_ABTS,
01649561 1800 "6142 NVME IO req %p not queued - skipping "
2b7824d0
JS		 1801 "abort req xri x%x\n",
1802 pnvme_fcreq, nvmereq_wqe->sli4_xritag);
01649561
JS		 1803 return;
1804 }
1805
4b056682 1806 atomic_inc(&lport->xmt_fcp_abort);
bd2cdd5e
JS		 1807 lpfc_nvmeio_data(phba, "NVME FCP ABORT: xri x%x idx %d to %06x\n",
1808 nvmereq_wqe->sli4_xritag,
00cefeb9 1809 nvmereq_wqe->hba_wqidx, pnvme_rport->port_id);
bd2cdd5e 1810
01649561
JS		 1811 /* Outstanding abort is in progress */
1812 if (nvmereq_wqe->iocb_flag & LPFC_DRIVER_ABORTED) {
1813 spin_unlock_irqrestore(&phba->hbalock, flags);
86c67379 1814 lpfc_printf_vlog(vport, KERN_ERR, LOG_NVME_ABTS,
01649561
JS		 1815 "6144 Outstanding NVME I/O Abort Request "
1816 "still pending on nvme_fcreq %p, "
2b7824d0
JS		 1817 "lpfc_ncmd %p xri x%x\n",
1818 pnvme_fcreq, lpfc_nbuf,
1819 nvmereq_wqe->sli4_xritag);
01649561
JS		 1820 return;
1821 }
1822
1823 abts_buf = __lpfc_sli_get_iocbq(phba);
1824 if (!abts_buf) {
1825 spin_unlock_irqrestore(&phba->hbalock, flags);
86c67379 1826 lpfc_printf_vlog(vport, KERN_ERR, LOG_NVME_ABTS,
01649561 1827 "6136 No available abort wqes. Skipping "
2b7824d0
JS		 1828 "Abts req for nvme_fcreq %p xri x%x\n",
1829 pnvme_fcreq, nvmereq_wqe->sli4_xritag);
01649561
JS		 1830 return;
1831 }
1832
1833 /* Ready - mark outstanding as aborted by driver. */
1834 nvmereq_wqe->iocb_flag |= LPFC_DRIVER_ABORTED;
1835
1836 /* Complete prepping the abort wqe and issue to the FW. */
1837 abts_wqe = &abts_buf->wqe;
1838
1839 /* WQEs are reused. Clear stale data and set key fields to
1840 * zero like ia, iaab, iaar, xri_tag, and ctxt_tag.
1841 */
1842 memset(abts_wqe, 0, sizeof(union lpfc_wqe));
1843 bf_set(abort_cmd_criteria, &abts_wqe->abort_cmd, T_XRI_TAG);
1844
1845 /* word 7 */
01649561
JS		 1846 bf_set(wqe_cmnd, &abts_wqe->abort_cmd.wqe_com, CMD_ABORT_XRI_CX);
1847 bf_set(wqe_class, &abts_wqe->abort_cmd.wqe_com,
1848 nvmereq_wqe->iocb.ulpClass);
1849
1850 /* word 8 - tell the FW to abort the IO associated with this
1851 * outstanding exchange ID.
1852 */
1853 abts_wqe->abort_cmd.wqe_com.abort_tag = nvmereq_wqe->sli4_xritag;
1854
1855 /* word 9 - this is the iotag for the abts_wqe completion. */
1856 bf_set(wqe_reqtag, &abts_wqe->abort_cmd.wqe_com,
1857 abts_buf->iotag);
1858
1859 /* word 10 */
01649561
JS		 1860 bf_set(wqe_qosd, &abts_wqe->abort_cmd.wqe_com, 1);
1861 bf_set(wqe_lenloc, &abts_wqe->abort_cmd.wqe_com, LPFC_WQE_LENLOC_NONE);
1862
1863 /* word 11 */
1864 bf_set(wqe_cmd_type, &abts_wqe->abort_cmd.wqe_com, OTHER_COMMAND);
1865 bf_set(wqe_wqec, &abts_wqe->abort_cmd.wqe_com, 1);
1866 bf_set(wqe_cqid, &abts_wqe->abort_cmd.wqe_com, LPFC_WQE_CQ_ID_DEFAULT);
1867
1868 /* ABTS WQE must go to the same WQ as the WQE to be aborted */
1869 abts_buf->iocb_flag |= LPFC_IO_NVME;
1870 abts_buf->hba_wqidx = nvmereq_wqe->hba_wqidx;
1871 abts_buf->vport = vport;
1872 abts_buf->wqe_cmpl = lpfc_nvme_abort_fcreq_cmpl;
1873 ret_val = lpfc_sli4_issue_wqe(phba, LPFC_FCP_RING, abts_buf);
1874 spin_unlock_irqrestore(&phba->hbalock, flags);
cd22d605 1875 if (ret_val) {
86c67379 1876 lpfc_printf_vlog(vport, KERN_ERR, LOG_NVME_ABTS,
01649561
JS		 1877 "6137 Failed abts issue_wqe with status x%x "
1878 "for nvme_fcreq %p.\n",
1879 ret_val, pnvme_fcreq);
1880 lpfc_sli_release_iocbq(phba, abts_buf);
1881 return;
1882 }
1883
86c67379 1884 lpfc_printf_vlog(vport, KERN_INFO, LOG_NVME_ABTS,
2b7824d0 1885 "6138 Transport Abort NVME Request Issued for "
01649561
JS		 1886 "ox_id x%x on reqtag x%x\n",
1887 nvmereq_wqe->sli4_xritag,
1888 abts_buf->iotag);
1889}
1890
1891/* Declare and initialization an instance of the FC NVME template. */
1892static struct nvme_fc_port_template lpfc_nvme_template = {
1893 /* initiator-based functions */
1894 .localport_delete = lpfc_nvme_localport_delete,
1895 .remoteport_delete = lpfc_nvme_remoteport_delete,
1896 .create_queue = lpfc_nvme_create_queue,
1897 .delete_queue = lpfc_nvme_delete_queue,
1898 .ls_req = lpfc_nvme_ls_req,
1899 .fcp_io = lpfc_nvme_fcp_io_submit,
1900 .ls_abort = lpfc_nvme_ls_abort,
1901 .fcp_abort = lpfc_nvme_fcp_abort,
1902
1903 .max_hw_queues = 1,
1904 .max_sgl_segments = LPFC_NVME_DEFAULT_SEGS,
1905 .max_dif_sgl_segments = LPFC_NVME_DEFAULT_SEGS,
1906 .dma_boundary = 0xFFFFFFFF,
1907
1908 /* Sizes of additional private data for data structures.
1909 * No use for the last two sizes at this time.
1910 */
1911 .local_priv_sz = sizeof(struct lpfc_nvme_lport),
1912 .remote_priv_sz = sizeof(struct lpfc_nvme_rport),
1913 .lsrqst_priv_sz = 0,
bbe3012b 1914 .fcprqst_priv_sz = sizeof(struct lpfc_nvme_fcpreq_priv),
01649561
JS		 1915};
1916
cf1a1d3e 1917static inline struct lpfc_nvme_buf *
5e5b511d 1918lpfc_nvme_buf(struct lpfc_hba *phba, int idx)
cf1a1d3e 1919{
5e5b511d 1920 struct lpfc_sli4_hdw_queue *qp;
cf1a1d3e
JS		 1921 struct lpfc_nvme_buf *lpfc_ncmd, *lpfc_ncmd_next;
1922
5e5b511d 1923 qp = &phba->sli4_hba.hdwq[idx];
cf1a1d3e 1924 list_for_each_entry_safe(lpfc_ncmd, lpfc_ncmd_next,
5e5b511d 1925 &qp->lpfc_io_buf_list_get, list) {
cf1a1d3e 1926 list_del_init(&lpfc_ncmd->list);
5e5b511d 1927 qp->get_io_bufs--;
cf1a1d3e
JS		 1928 return lpfc_ncmd;
1929 }
1930 return NULL;
1931}
1932
01649561 1933/**
5e5b511d 1934 * lpfc_get_nvme_buf - Get a nvme buffer from io_buf_list of the HBA
01649561
JS		 1935 * @phba: The HBA for which this call is being executed.
1936 *
5e5b511d 1937 * This routine removes a nvme buffer from head of @hdwq io_buf_list
01649561
JS		 1938 * and returns to caller.
1939 *
1940 * Return codes:
1941 * NULL - Error
1942 * Pointer to lpfc_nvme_buf - Success
1943 **/
1944static struct lpfc_nvme_buf *
cf1a1d3e 1945lpfc_get_nvme_buf(struct lpfc_hba *phba, struct lpfc_nodelist *ndlp,
5e5b511d 1946 int idx, int expedite)
01649561 1947{
cf1a1d3e 1948 struct lpfc_nvme_buf *lpfc_ncmd = NULL;
5e5b511d 1949 struct lpfc_sli4_hdw_queue *qp;
0794d601
JS		 1950 struct sli4_sge *sgl;
1951 struct lpfc_iocbq *pwqeq;
1952 union lpfc_wqe128 *wqe;
01649561 1953 unsigned long iflag = 0;
01649561 1954
5e5b511d
JS		 1955 qp = &phba->sli4_hba.hdwq[idx];
1956 spin_lock_irqsave(&qp->io_buf_list_get_lock, iflag);
1957 if (qp->get_io_bufs > LPFC_NVME_EXPEDITE_XRICNT || expedite)
1958 lpfc_ncmd = lpfc_nvme_buf(phba, idx);
cf1a1d3e 1959 if (!lpfc_ncmd) {
5e5b511d
JS		 1960 spin_lock(&qp->io_buf_list_put_lock);
1961 list_splice(&qp->lpfc_io_buf_list_put,
1962 &qp->lpfc_io_buf_list_get);
1963 qp->get_io_bufs += qp->put_io_bufs;
1964 INIT_LIST_HEAD(&qp->lpfc_io_buf_list_put);
1965 qp->put_io_bufs = 0;
1966 spin_unlock(&qp->io_buf_list_put_lock);
1967 if (qp->get_io_bufs > LPFC_NVME_EXPEDITE_XRICNT ||
0794d601 1968 expedite)
5e5b511d 1969 lpfc_ncmd = lpfc_nvme_buf(phba, idx);
01649561 1970 }
5e5b511d 1971 spin_unlock_irqrestore(&qp->io_buf_list_get_lock, iflag);
2a5b7d62 1972
0794d601
JS		 1973 if (lpfc_ncmd) {
1974 pwqeq = &(lpfc_ncmd->cur_iocbq);
1975 wqe = &pwqeq->wqe;
1976
1977 /* Setup key fields in buffer that may have been changed
1978 * if other protocols used this buffer.
1979 */
1980 pwqeq->iocb_flag = LPFC_IO_NVME;
1981 pwqeq->wqe_cmpl = lpfc_nvme_io_cmd_wqe_cmpl;
1982 lpfc_ncmd->start_time = jiffies;
1983 lpfc_ncmd->flags = 0;
5e5b511d 1984 lpfc_ncmd->hdwq = idx;
0794d601
JS		 1985
1986 /* Rsp SGE will be filled in when we rcv an IO
1987 * from the NVME Layer to be sent.
1988 * The cmd is going to be embedded so we need a SKIP SGE.
1989 */
1990 sgl = lpfc_ncmd->dma_sgl;
1991 bf_set(lpfc_sli4_sge_type, sgl, LPFC_SGE_TYPE_SKIP);
1992 bf_set(lpfc_sli4_sge_last, sgl, 0);
1993 sgl->word2 = cpu_to_le32(sgl->word2);
1994 /* Fill in word 3 / sgl_len during cmd submission */
1995
1996 /* Initialize WQE */
1997 memset(wqe, 0, sizeof(union lpfc_wqe));
1998
1999 if (lpfc_ndlp_check_qdepth(phba, ndlp)) {
2000 atomic_inc(&ndlp->cmd_pending);
2001 lpfc_ncmd->flags |= LPFC_BUMP_QDEPTH;
2002 }
5e5b511d
JS		 2003
2004 } else
2005 qp->empty_io_bufs++;
2006
01649561
JS		 2007 return lpfc_ncmd;
2008}
2009
2010/**
2011 * lpfc_release_nvme_buf: Return a nvme buffer back to hba nvme buf list.
2012 * @phba: The Hba for which this call is being executed.
2013 * @lpfc_ncmd: The nvme buffer which is being released.
2014 *
2015 * This routine releases @lpfc_ncmd nvme buffer by adding it to tail of @phba
5e5b511d 2016 * lpfc_io_buf_list list. For SLI4 XRI's are tied to the nvme buffer
01649561
JS		 2017 * and cannot be reused for at least RA_TOV amount of time if it was
2018 * aborted.
2019 **/
2020static void
2021lpfc_release_nvme_buf(struct lpfc_hba *phba, struct lpfc_nvme_buf *lpfc_ncmd)
2022{
5e5b511d 2023 struct lpfc_sli4_hdw_queue *qp;
01649561
JS		 2024 unsigned long iflag = 0;
2025
2a5b7d62
JS		 2026 if ((lpfc_ncmd->flags & LPFC_BUMP_QDEPTH) && lpfc_ncmd->ndlp)
2027 atomic_dec(&lpfc_ncmd->ndlp->cmd_pending);
2028
2a5b7d62
JS		 2029 lpfc_ncmd->ndlp = NULL;
2030 lpfc_ncmd->flags &= ~LPFC_BUMP_QDEPTH;
2031
5e5b511d 2032 qp = &phba->sli4_hba.hdwq[lpfc_ncmd->hdwq];
318083ad 2033 if (lpfc_ncmd->flags & LPFC_SBUF_XBUSY) {
86c67379
JS		 2034 lpfc_printf_log(phba, KERN_INFO, LOG_NVME_ABTS,
2035 "6310 XB release deferred for "
2036 "ox_id x%x on reqtag x%x\n",
2037 lpfc_ncmd->cur_iocbq.sli4_xritag,
2038 lpfc_ncmd->cur_iocbq.iotag);
2039
5e5b511d 2040 spin_lock_irqsave(&qp->abts_nvme_buf_list_lock, iflag);
01649561 2041 list_add_tail(&lpfc_ncmd->list,
5e5b511d
JS		 2042 &qp->lpfc_abts_nvme_buf_list);
2043 qp->abts_nvme_io_bufs++;
2044 spin_unlock_irqrestore(&qp->abts_nvme_buf_list_lock, iflag);
01649561 2045 } else {
0794d601 2046 /* MUST zero fields if buffer is reused by another protocol */
01649561 2047 lpfc_ncmd->nvmeCmd = NULL;
0794d601 2048 lpfc_ncmd->cur_iocbq.wqe_cmpl = NULL;
5e5b511d
JS		 2049
2050 spin_lock_irqsave(&qp->io_buf_list_put_lock, iflag);
0794d601 2051 list_add_tail(&lpfc_ncmd->list,
5e5b511d
JS		 2052 &qp->lpfc_io_buf_list_put);
2053 qp->put_io_bufs++;
2054 spin_unlock_irqrestore(&qp->io_buf_list_put_lock, iflag);
01649561
JS		 2055 }
2056}
2057
2058/**
2059 * lpfc_nvme_create_localport - Create/Bind an nvme localport instance.
2060 * @pvport - the lpfc_vport instance requesting a localport.
2061 *
2062 * This routine is invoked to create an nvme localport instance to bind
2063 * to the nvme_fc_transport. It is called once during driver load
2064 * like lpfc_create_shost after all other services are initialized.
2065 * It requires a vport, vpi, and wwns at call time. Other localport
2066 * parameters are modified as the driver's FCID and the Fabric WWN
2067 * are established.
2068 *
2069 * Return codes
2070 * 0 - successful
2071 * -ENOMEM - no heap memory available
2072 * other values - from nvme registration upcall
2073 **/
2074int
2075lpfc_nvme_create_localport(struct lpfc_vport *vport)
2076{
166d7211 2077 int ret = 0;
01649561
JS		 2078 struct lpfc_hba *phba = vport->phba;
2079 struct nvme_fc_port_info nfcp_info;
2080 struct nvme_fc_local_port *localport;
2081 struct lpfc_nvme_lport *lport;
66a210ff 2082 struct lpfc_nvme_ctrl_stat *cstat;
0794d601 2083 int i;
01649561
JS		 2084
2085 /* Initialize this localport instance. The vport wwn usage ensures
2086 * that NPIV is accounted for.
2087 */
2088 memset(&nfcp_info, 0, sizeof(struct nvme_fc_port_info));
2089 nfcp_info.port_role = FC_PORT_ROLE_NVME_INITIATOR;
2090 nfcp_info.node_name = wwn_to_u64(vport->fc_nodename.u.wwn);
2091 nfcp_info.port_name = wwn_to_u64(vport->fc_portname.u.wwn);
2092
5b9e70b2
JS		 2093 /* We need to tell the transport layer + 1 because it takes page
2094 * alignment into account. When space for the SGL is allocated we
2095 * allocate + 3, one for cmd, one for rsp and one for this alignment
4d4c4a4a 2096 */
4d4c4a4a 2097 lpfc_nvme_template.max_sgl_segments = phba->cfg_nvme_seg_cnt + 1;
cdb42bec 2098 lpfc_nvme_template.max_hw_queues = phba->cfg_hdw_queue;
01649561 2099
66a210ff 2100 cstat = kmalloc((sizeof(struct lpfc_nvme_ctrl_stat) *
cdb42bec 2101 phba->cfg_hdw_queue), GFP_KERNEL);
66a210ff
JS		 2102 if (!cstat)
2103 return -ENOMEM;
2104
01649561
JS		 2105 /* localport is allocated from the stack, but the registration
2106 * call allocates heap memory as well as the private area.
2107 */
7d708033 2108#if (IS_ENABLED(CONFIG_NVME_FC))
01649561
JS		 2109 ret = nvme_fc_register_localport(&nfcp_info, &lpfc_nvme_template,
2110 &vport->phba->pcidev->dev, &localport);
166d7211
JS		 2111#else
2112 ret = -ENOMEM;
2113#endif
01649561
JS		 2114 if (!ret) {
2115 lpfc_printf_vlog(vport, KERN_INFO, LOG_NVME | LOG_NVME_DISC,
2116 "6005 Successfully registered local "
2117 "NVME port num %d, localP %p, private %p, "
2118 "sg_seg %d\n",
2119 localport->port_num, localport,
2120 localport->private,
2121 lpfc_nvme_template.max_sgl_segments);
2122
2123 /* Private is our lport size declared in the template. */
2124 lport = (struct lpfc_nvme_lport *)localport->private;
2125 vport->localport = localport;
2126 lport->vport = vport;
66a210ff 2127 lport->cstat = cstat;
01649561 2128 vport->nvmei_support = 1;
6b486ce9 2129
4b056682
JS		 2130 atomic_set(&lport->xmt_fcp_noxri, 0);
2131 atomic_set(&lport->xmt_fcp_bad_ndlp, 0);
2132 atomic_set(&lport->xmt_fcp_qdepth, 0);
44c2757b 2133 atomic_set(&lport->xmt_fcp_err, 0);
4b056682
JS		 2134 atomic_set(&lport->xmt_fcp_wqerr, 0);
2135 atomic_set(&lport->xmt_fcp_abort, 0);
2136 atomic_set(&lport->xmt_ls_abort, 0);
2137 atomic_set(&lport->xmt_ls_err, 0);
2138 atomic_set(&lport->cmpl_fcp_xb, 0);
2139 atomic_set(&lport->cmpl_fcp_err, 0);
2140 atomic_set(&lport->cmpl_ls_xb, 0);
2141 atomic_set(&lport->cmpl_ls_err, 0);
66a210ff
JS		 2142 atomic_set(&lport->fc4NvmeLsRequests, 0);
2143 atomic_set(&lport->fc4NvmeLsCmpls, 0);
2144
cdb42bec 2145 for (i = 0; i < phba->cfg_hdw_queue; i++) {
66a210ff
JS		 2146 cstat = &lport->cstat[i];
2147 atomic_set(&cstat->fc4NvmeInputRequests, 0);
2148 atomic_set(&cstat->fc4NvmeOutputRequests, 0);
2149 atomic_set(&cstat->fc4NvmeControlRequests, 0);
2150 atomic_set(&cstat->fc4NvmeIoCmpls, 0);
2151 }
0794d601 2152 } else
66a210ff 2153 kfree(cstat);
01649561 2154
01649561
JS		 2155 return ret;
2156}
2157
add9d6be
JS		 2158/* lpfc_nvme_lport_unreg_wait - Wait for the host to complete an lport unreg.
2159 *
2160 * The driver has to wait for the host nvme transport to callback
2161 * indicating the localport has successfully unregistered all
2162 * resources. Since this is an uninterruptible wait, loop every ten
2163 * seconds and print a message indicating no progress.
2164 *
2165 * An uninterruptible wait is used because of the risk of transport-to-
2166 * driver state mismatch.
2167 */
2168void
2169lpfc_nvme_lport_unreg_wait(struct lpfc_vport *vport,
2170 struct lpfc_nvme_lport *lport)
2171{
2172#if (IS_ENABLED(CONFIG_NVME_FC))
2173 u32 wait_tmo;
2174 int ret;
2175
2176 /* Host transport has to clean up and confirm requiring an indefinite
2177 * wait. Print a message if a 10 second wait expires and renew the
2178 * wait. This is unexpected.
2179 */
2180 wait_tmo = msecs_to_jiffies(LPFC_NVME_WAIT_TMO * 1000);
2181 while (true) {
2182 ret = wait_for_completion_timeout(&lport->lport_unreg_done,
2183 wait_tmo);
2184 if (unlikely(!ret)) {
2185 lpfc_printf_vlog(vport, KERN_ERR, LOG_NVME_IOERR,
2186 "6176 Lport %p Localport %p wait "
2187 "timed out. Renewing.\n",
2188 lport, vport->localport);
2189 continue;
2190 }
2191 break;
2192 }
2193 lpfc_printf_vlog(vport, KERN_INFO, LOG_NVME_IOERR,
2194 "6177 Lport %p Localport %p Complete Success\n",
2195 lport, vport->localport);
2196#endif
2197}
2198
01649561
JS		 2199/**
2200 * lpfc_nvme_destroy_localport - Destroy lpfc_nvme bound to nvme transport.
2201 * @pnvme: pointer to lpfc nvme data structure.
2202 *
2203 * This routine is invoked to destroy all lports bound to the phba.
2204 * The lport memory was allocated by the nvme fc transport and is
2205 * released there. This routine ensures all rports bound to the
2206 * lport have been disconnected.
2207 *
2208 **/
2209void
2210lpfc_nvme_destroy_localport(struct lpfc_vport *vport)
2211{
7d708033 2212#if (IS_ENABLED(CONFIG_NVME_FC))
01649561
JS		 2213 struct nvme_fc_local_port *localport;
2214 struct lpfc_nvme_lport *lport;
66a210ff 2215 struct lpfc_nvme_ctrl_stat *cstat;
01649561
JS		 2216 int ret;
2217
2218 if (vport->nvmei_support == 0)
2219 return;
2220
2221 localport = vport->localport;
2222 vport->localport = NULL;
2223 lport = (struct lpfc_nvme_lport *)localport->private;
66a210ff 2224 cstat = lport->cstat;
01649561
JS		 2225
2226 lpfc_printf_vlog(vport, KERN_INFO, LOG_NVME,
2227 "6011 Destroying NVME localport %p\n",
2228 localport);
166d7211 2229
01649561
JS		 2230 /* lport's rport list is clear. Unregister
2231 * lport and release resources.
2232 */
2233 init_completion(&lport->lport_unreg_done);
2234 ret = nvme_fc_unregister_localport(localport);
add9d6be
JS		 2235
2236 /* Wait for completion. This either blocks
2237 * indefinitely or succeeds
2238 */
2239 lpfc_nvme_lport_unreg_wait(vport, lport);
66a210ff 2240 kfree(cstat);
01649561
JS		 2241
2242 /* Regardless of the unregister upcall response, clear
2243 * nvmei_support. All rports are unregistered and the
2244 * driver will clean up.
2245 */
2246 vport->nvmei_support = 0;
2247 if (ret == 0) {
2248 lpfc_printf_vlog(vport,
2249 KERN_INFO, LOG_NVME_DISC,
2250 "6009 Unregistered lport Success\n");
2251 } else {
2252 lpfc_printf_vlog(vport,
2253 KERN_INFO, LOG_NVME_DISC,
2254 "6010 Unregistered lport "
2255 "Failed, status x%x\n",
2256 ret);
2257 }
166d7211 2258#endif
01649561
JS		 2259}
2260
2261void
2262lpfc_nvme_update_localport(struct lpfc_vport *vport)
2263{
4410a67a 2264#if (IS_ENABLED(CONFIG_NVME_FC))
01649561
JS		 2265 struct nvme_fc_local_port *localport;
2266 struct lpfc_nvme_lport *lport;
2267
2268 localport = vport->localport;
4410a67a
JS		 2269 if (!localport) {
2270 lpfc_printf_vlog(vport, KERN_WARNING, LOG_NVME,
2271 "6710 Update NVME fail. No localport\n");
2272 return;
2273 }
01649561 2274 lport = (struct lpfc_nvme_lport *)localport->private;
4410a67a
JS		 2275 if (!lport) {
2276 lpfc_printf_vlog(vport, KERN_WARNING, LOG_NVME,
2277 "6171 Update NVME fail. localP %p, No lport\n",
2278 localport);
2279 return;
2280 }
01649561
JS		 2281 lpfc_printf_vlog(vport, KERN_INFO, LOG_NVME,
2282 "6012 Update NVME lport %p did x%x\n",
2283 localport, vport->fc_myDID);
2284
2285 localport->port_id = vport->fc_myDID;
2286 if (localport->port_id == 0)
2287 localport->port_role = FC_PORT_ROLE_NVME_DISCOVERY;
2288 else
2289 localport->port_role = FC_PORT_ROLE_NVME_INITIATOR;
2290
2291 lpfc_printf_vlog(vport, KERN_INFO, LOG_NVME_DISC,
2292 "6030 bound lport %p to DID x%06x\n",
2293 lport, localport->port_id);
4410a67a 2294#endif
01649561
JS		 2295}
2296
2297int
2298lpfc_nvme_register_port(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp)
2299{
7d708033 2300#if (IS_ENABLED(CONFIG_NVME_FC))
01649561
JS		 2301 int ret = 0;
2302 struct nvme_fc_local_port *localport;
2303 struct lpfc_nvme_lport *lport;
2304 struct lpfc_nvme_rport *rport;
01466024 2305 struct lpfc_nvme_rport *oldrport;
01649561
JS		 2306 struct nvme_fc_remote_port *remote_port;
2307 struct nvme_fc_port_info rpinfo;
93a3922d 2308 struct lpfc_nodelist *prev_ndlp = NULL;
01649561
JS		 2309
2310 lpfc_printf_vlog(ndlp->vport, KERN_INFO, LOG_NVME_DISC,
2311 "6006 Register NVME PORT. DID x%06x nlptype x%x\n",
2312 ndlp->nlp_DID, ndlp->nlp_type);
2313
2314 localport = vport->localport;
bb6a8a2c
DK		 2315 if (!localport)
2316 return 0;
2317
01649561
JS		 2318 lport = (struct lpfc_nvme_lport *)localport->private;
2319
7a06dcd3
JS		 2320 /* NVME rports are not preserved across devloss.
2321 * Just register this instance. Note, rpinfo->dev_loss_tmo
2322 * is left 0 to indicate accept transport defaults. The
2323 * driver communicates port role capabilities consistent
2324 * with the PRLI response data.
2325 */
2326 memset(&rpinfo, 0, sizeof(struct nvme_fc_port_info));
2327 rpinfo.port_id = ndlp->nlp_DID;
2328 if (ndlp->nlp_type & NLP_NVME_TARGET)
2329 rpinfo.port_role |= FC_PORT_ROLE_NVME_TARGET;
2330 if (ndlp->nlp_type & NLP_NVME_INITIATOR)
2331 rpinfo.port_role |= FC_PORT_ROLE_NVME_INITIATOR;
2332
2333 if (ndlp->nlp_type & NLP_NVME_DISCOVERY)
2334 rpinfo.port_role |= FC_PORT_ROLE_NVME_DISCOVERY;
2335
2336 rpinfo.port_name = wwn_to_u64(ndlp->nlp_portname.u.wwn);
2337 rpinfo.node_name = wwn_to_u64(ndlp->nlp_nodename.u.wwn);
01466024 2338
9e210178 2339 spin_lock_irq(&vport->phba->hbalock);
01466024 2340 oldrport = lpfc_ndlp_get_nrport(ndlp);
9e210178 2341 spin_unlock_irq(&vport->phba->hbalock);
01466024 2342 if (!oldrport)
3fd78355
JS		 2343 lpfc_nlp_get(ndlp);
2344
7a06dcd3
JS		 2345 ret = nvme_fc_register_remoteport(localport, &rpinfo, &remote_port);
2346 if (!ret) {
2347 /* If the ndlp already has an nrport, this is just
2348 * a resume of the existing rport. Else this is a
2349 * new rport.
01649561 2350 */
b15bd3e6
JS		 2351 /* Guard against an unregister/reregister
2352 * race that leaves the WAIT flag set.
2353 */
2354 spin_lock_irq(&vport->phba->hbalock);
2355 ndlp->upcall_flags &= ~NLP_WAIT_FOR_UNREG;
2356 spin_unlock_irq(&vport->phba->hbalock);
7a06dcd3 2357 rport = remote_port->private;
01466024 2358 if (oldrport) {
93a3922d
JS		 2359 /* New remoteport record does not guarantee valid
2360 * host private memory area.
2361 */
2362 prev_ndlp = oldrport->ndlp;
01466024 2363 if (oldrport == remote_port->private) {
93a3922d
JS		 2364 /* Same remoteport - ndlp should match.
2365 * Just reuse.
2366 */
3fd78355
JS		 2367 lpfc_printf_vlog(ndlp->vport, KERN_INFO,
2368 LOG_NVME_DISC,
2369 "6014 Rebinding lport to "
2370 "remoteport %p wwpn 0x%llx, "
93a3922d 2371 "Data: x%x x%x %p %p x%x x%06x\n",
3fd78355
JS		 2372 remote_port,
2373 remote_port->port_name,
2374 remote_port->port_id,
2375 remote_port->port_role,
93a3922d 2376 prev_ndlp,
3fd78355
JS		 2377 ndlp,
2378 ndlp->nlp_type,
2379 ndlp->nlp_DID);
2380 return 0;
2381 }
2b75d0f9 2382
3fd78355
JS		 2383 /* Sever the ndlp<->rport association
2384 * before dropping the ndlp ref from
2385 * register.
2b75d0f9 2386 */
3fd78355 2387 spin_lock_irq(&vport->phba->hbalock);
2b75d0f9 2388 ndlp->nrport = NULL;
01466024 2389 ndlp->upcall_flags &= ~NLP_WAIT_FOR_UNREG;
3fd78355 2390 spin_unlock_irq(&vport->phba->hbalock);
2b75d0f9 2391 rport->ndlp = NULL;
3fd78355 2392 rport->remoteport = NULL;
b04744ce
JS		 2393
2394 /* Reference only removed if previous NDLP is no longer
2395 * active. It might be just a swap and removing the
2396 * reference would cause a premature cleanup.
2397 */
2398 if (prev_ndlp && prev_ndlp != ndlp) {
2399 if ((!NLP_CHK_NODE_ACT(prev_ndlp)) ||
2400 (!prev_ndlp->nrport))
2401 lpfc_nlp_put(prev_ndlp);
2402 }
01649561 2403 }
2b75d0f9
DK		 2404
2405 /* Clean bind the rport to the ndlp. */
2406 rport->remoteport = remote_port;
2407 rport->lport = lport;
3fd78355
JS		 2408 rport->ndlp = ndlp;
2409 spin_lock_irq(&vport->phba->hbalock);
2b75d0f9 2410 ndlp->nrport = rport;
3fd78355 2411 spin_unlock_irq(&vport->phba->hbalock);
2b75d0f9
DK		 2412 lpfc_printf_vlog(vport, KERN_INFO,
2413 LOG_NVME_DISC | LOG_NODE,
2414 "6022 Binding new rport to "
93a3922d 2415 "lport %p Remoteport %p rport %p WWNN 0x%llx, "
2b75d0f9 2416 "Rport WWPN 0x%llx DID "
93a3922d
JS		 2417 "x%06x Role x%x, ndlp %p prev_ndlp %p\n",
2418 lport, remote_port, rport,
2b75d0f9 2419 rpinfo.node_name, rpinfo.port_name,
3fd78355 2420 rpinfo.port_id, rpinfo.port_role,
93a3922d 2421 ndlp, prev_ndlp);
01649561 2422 } else {
7a06dcd3
JS		 2423 lpfc_printf_vlog(vport, KERN_ERR,
2424 LOG_NVME_DISC | LOG_NODE,
2425 "6031 RemotePort Registration failed "
2426 "err: %d, DID x%06x\n",
2427 ret, ndlp->nlp_DID);
01649561 2428 }
7a06dcd3 2429
01649561 2430 return ret;
166d7211
JS		 2431#else
2432 return 0;
2433#endif
01649561
JS		 2434}
2435
2436/* lpfc_nvme_unregister_port - unbind the DID and port_role from this rport.
2437 *
2438 * There is no notion of Devloss or rport recovery from the current
2439 * nvme_transport perspective. Loss of an rport just means IO cannot
2440 * be sent and recovery is completely up to the initator.
2441 * For now, the driver just unbinds the DID and port_role so that
2442 * no further IO can be issued. Changes are planned for later.
2443 *
2444 * Notes - the ndlp reference count is not decremented here since
2445 * since there is no nvme_transport api for devloss. Node ref count
2446 * is only adjusted in driver unload.
2447 */
2448void
2449lpfc_nvme_unregister_port(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp)
2450{
7d708033 2451#if (IS_ENABLED(CONFIG_NVME_FC))
01649561
JS		 2452 int ret;
2453 struct nvme_fc_local_port *localport;
2454 struct lpfc_nvme_lport *lport;
2455 struct lpfc_nvme_rport *rport;
9e210178 2456 struct nvme_fc_remote_port *remoteport = NULL;
01649561
JS		 2457
2458 localport = vport->localport;
2459
2460 /* This is fundamental error. The localport is always
2461 * available until driver unload. Just exit.
2462 */
2463 if (!localport)
2464 return;
2465
2466 lport = (struct lpfc_nvme_lport *)localport->private;
2467 if (!lport)
2468 goto input_err;
2469
9e210178 2470 spin_lock_irq(&vport->phba->hbalock);
01466024 2471 rport = lpfc_ndlp_get_nrport(ndlp);
9e210178
JS		 2472 if (rport)
2473 remoteport = rport->remoteport;
2474 spin_unlock_irq(&vport->phba->hbalock);
2475 if (!remoteport)
01649561
JS		 2476 goto input_err;
2477
01649561
JS		 2478 lpfc_printf_vlog(vport, KERN_INFO, LOG_NVME_DISC,
2479 "6033 Unreg nvme remoteport %p, portname x%llx, "
2480 "port_id x%06x, portstate x%x port type x%x\n",
2481 remoteport, remoteport->port_name,
2482 remoteport->port_id, remoteport->port_state,
2483 ndlp->nlp_type);
2484
2485 /* Sanity check ndlp type. Only call for NVME ports. Don't
2486 * clear any rport state until the transport calls back.
2487 */
3b5bde69
JS		 2488
2489 if (ndlp->nlp_type & NLP_NVME_TARGET) {
7a06dcd3
JS		 2490 /* No concern about the role change on the nvme remoteport.
2491 * The transport will update it.
2492 */
add9d6be 2493 ndlp->upcall_flags |= NLP_WAIT_FOR_UNREG;
7438273f
JS		 2494
2495 /* Don't let the host nvme transport keep sending keep-alives
2496 * on this remoteport. Vport is unloading, no recovery. The
2497 * return values is ignored. The upcall is a courtesy to the
2498 * transport.
2499 */
2500 if (vport->load_flag & FC_UNLOADING)
2501 (void)nvme_fc_set_remoteport_devloss(remoteport, 0);
2502
01649561 2503 ret = nvme_fc_unregister_remoteport(remoteport);
3fd78355
JS		 2504 if (ret != 0) {
2505 lpfc_nlp_put(ndlp);
01649561
JS		 2506 lpfc_printf_vlog(vport, KERN_ERR, LOG_NVME_DISC,
2507 "6167 NVME unregister failed %d "
2508 "port_state x%x\n",
2509 ret, remoteport->port_state);
3fd78355 2510 }
01649561
JS		 2511 }
2512 return;
2513
2514 input_err:
166d7211 2515#endif
01649561 2516 lpfc_printf_vlog(vport, KERN_ERR, LOG_NVME_DISC,
2b7824d0 2517 "6168 State error: lport %p, rport%p FCID x%06x\n",
01649561
JS		 2518 vport->localport, ndlp->rport, ndlp->nlp_DID);
2519}
318083ad
JS		 2520
2521/**
2522 * lpfc_sli4_nvme_xri_aborted - Fast-path process of NVME xri abort
2523 * @phba: pointer to lpfc hba data structure.
2524 * @axri: pointer to the fcp xri abort wcqe structure.
2525 *
2526 * This routine is invoked by the worker thread to process a SLI4 fast-path
952c303b
DK		 2527 * NVME aborted xri. Aborted NVME IO commands are completed to the transport
2528 * here.
318083ad
JS		 2529 **/
2530void
2531lpfc_sli4_nvme_xri_aborted(struct lpfc_hba *phba,
5e5b511d 2532 struct sli4_wcqe_xri_aborted *axri, int idx)
318083ad
JS		 2533{
2534 uint16_t xri = bf_get(lpfc_wcqe_xa_xri, axri);
318083ad 2535 struct lpfc_nvme_buf *lpfc_ncmd, *next_lpfc_ncmd;
952c303b 2536 struct nvmefc_fcp_req *nvme_cmd = NULL;
318083ad 2537 struct lpfc_nodelist *ndlp;
5e5b511d 2538 struct lpfc_sli4_hdw_queue *qp;
318083ad 2539 unsigned long iflag = 0;
318083ad
JS		 2540
2541 if (!(phba->cfg_enable_fc4_type & LPFC_ENABLE_NVME))
2542 return;
5e5b511d 2543 qp = &phba->sli4_hba.hdwq[idx];
318083ad 2544 spin_lock_irqsave(&phba->hbalock, iflag);
5e5b511d 2545 spin_lock(&qp->abts_nvme_buf_list_lock);
318083ad 2546 list_for_each_entry_safe(lpfc_ncmd, next_lpfc_ncmd,
5e5b511d 2547 &qp->lpfc_abts_nvme_buf_list, list) {
318083ad 2548 if (lpfc_ncmd->cur_iocbq.sli4_xritag == xri) {
bbe3012b 2549 list_del_init(&lpfc_ncmd->list);
5e5b511d 2550 qp->abts_nvme_io_bufs--;
318083ad
JS		 2551 lpfc_ncmd->flags &= ~LPFC_SBUF_XBUSY;
2552 lpfc_ncmd->status = IOSTAT_SUCCESS;
5e5b511d 2553 spin_unlock(&qp->abts_nvme_buf_list_lock);
318083ad 2554
318083ad
JS		 2555 spin_unlock_irqrestore(&phba->hbalock, iflag);
2556 ndlp = lpfc_ncmd->ndlp;
952c303b 2557 if (ndlp)
318083ad 2558 lpfc_sli4_abts_err_handler(phba, ndlp, axri);
86c67379
JS		 2559
2560 lpfc_printf_log(phba, KERN_INFO, LOG_NVME_ABTS,
952c303b
DK		 2561 "6311 nvme_cmd %p xri x%x tag x%x "
2562 "abort complete and xri released\n",
2563 lpfc_ncmd->nvmeCmd, xri,
2564 lpfc_ncmd->cur_iocbq.iotag);
2565
2566 /* Aborted NVME commands are required to not complete
2567 * before the abort exchange command fully completes.
2568 * Once completed, it is available via the put list.
2569 */
3fd78355
JS		 2570 if (lpfc_ncmd->nvmeCmd) {
2571 nvme_cmd = lpfc_ncmd->nvmeCmd;
2572 nvme_cmd->done(nvme_cmd);
2573 lpfc_ncmd->nvmeCmd = NULL;
2574 }
318083ad 2575 lpfc_release_nvme_buf(phba, lpfc_ncmd);
318083ad
JS		 2576 return;
2577 }
2578 }
5e5b511d 2579 spin_unlock(&qp->abts_nvme_buf_list_lock);
318083ad 2580 spin_unlock_irqrestore(&phba->hbalock, iflag);
86c67379
JS		 2581
2582 lpfc_printf_log(phba, KERN_INFO, LOG_NVME_ABTS,
2583 "6312 XRI Aborted xri x%x not found\n", xri);
2584
318083ad 2585}
c3725bdc
JS		 2586
2587/**
2588 * lpfc_nvme_wait_for_io_drain - Wait for all NVME wqes to complete
2589 * @phba: Pointer to HBA context object.
2590 *
2591 * This function flushes all wqes in the nvme rings and frees all resources
2592 * in the txcmplq. This function does not issue abort wqes for the IO
2593 * commands in txcmplq, they will just be returned with
2594 * IOERR_SLI_DOWN. This function is invoked with EEH when device's PCI
2595 * slot has been permanently disabled.
2596 **/
2597void
2598lpfc_nvme_wait_for_io_drain(struct lpfc_hba *phba)
2599{
2600 struct lpfc_sli_ring *pring;
2601 u32 i, wait_cnt = 0;
2602
cdb42bec 2603 if (phba->sli_rev < LPFC_SLI_REV4 || !phba->sli4_hba.hdwq)
c3725bdc
JS		 2604 return;
2605
2606 /* Cycle through all NVME rings and make sure all outstanding
2607 * WQEs have been removed from the txcmplqs.
2608 */
cdb42bec
JS		 2609 for (i = 0; i < phba->cfg_hdw_queue; i++) {
2610 pring = phba->sli4_hba.hdwq[i].nvme_wq->pring;
c3725bdc 2611
d580c613
JS		 2612 if (!pring)
2613 continue;
2614
c3725bdc
JS		 2615 /* Retrieve everything on the txcmplq */
2616 while (!list_empty(&pring->txcmplq)) {
2617 msleep(LPFC_XRI_EXCH_BUSY_WAIT_T1);
2618 wait_cnt++;
2619
2620 /* The sleep is 10mS. Every ten seconds,
2621 * dump a message. Something is wrong.
2622 */
2623 if ((wait_cnt % 1000) == 0) {
2624 lpfc_printf_log(phba, KERN_ERR, LOG_NVME_IOERR,
2625 "6178 NVME IO not empty, "
2626 "cnt %d\n", wait_cnt);
2627 }
2628 }
2629 }
2630}
Linux 6.x block layer and io_uring tree(s)