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nvmet-fcloop: remove use of FC-specific error codes
[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. *
d080abe0
JS		 4 * Copyright (C) 2017 Broadcom. All Rights Reserved. The term *
5 * “Broadcom” refers to Broadcom Limited 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 *
60lpfc_get_nvme_buf(struct lpfc_hba *phba, struct lpfc_nodelist *ndlp);
61
62static void
63lpfc_release_nvme_buf(struct lpfc_hba *, struct lpfc_nvme_buf *);
64
65
66/**
67 * lpfc_nvme_create_queue -
68 * @lpfc_pnvme: Pointer to the driver's nvme instance data
69 * @qidx: An cpu index used to affinitize IO queues and MSIX vectors.
70 * @handle: An opaque driver handle used in follow-up calls.
71 *
72 * Driver registers this routine to preallocate and initialize any
73 * internal data structures to bind the @qidx to its internal IO queues.
74 * A hardware queue maps (qidx) to a specific driver MSI-X vector/EQ/CQ/WQ.
75 *
76 * Return value :
77 * 0 - Success
78 * -EINVAL - Unsupported input value.
79 * -ENOMEM - Could not alloc necessary memory
80 **/
81static int
82lpfc_nvme_create_queue(struct nvme_fc_local_port *pnvme_lport,
83 unsigned int qidx, u16 qsize,
84 void **handle)
85{
86 struct lpfc_nvme_lport *lport;
87 struct lpfc_vport *vport;
88 struct lpfc_nvme_qhandle *qhandle;
89 char *str;
90
91 lport = (struct lpfc_nvme_lport *)pnvme_lport->private;
92 vport = lport->vport;
93 qhandle = kzalloc(sizeof(struct lpfc_nvme_qhandle), GFP_KERNEL);
94 if (qhandle == NULL)
95 return -ENOMEM;
96
97 qhandle->cpu_id = smp_processor_id();
98 qhandle->qidx = qidx;
99 /*
100 * NVME qidx == 0 is the admin queue, so both admin queue
101 * and first IO queue will use MSI-X vector and associated
102 * EQ/CQ/WQ at index 0. After that they are sequentially assigned.
103 */
104 if (qidx) {
105 str = "IO "; /* IO queue */
106 qhandle->index = ((qidx - 1) %
107 vport->phba->cfg_nvme_io_channel);
108 } else {
109 str = "ADM"; /* Admin queue */
110 qhandle->index = qidx;
111 }
112
d58734f0 113 lpfc_printf_vlog(vport, KERN_INFO, LOG_NVME,
01649561
JS		 114 "6073 Binding %s HdwQueue %d (cpu %d) to "
115 "io_channel %d qhandle %p\n", str,
116 qidx, qhandle->cpu_id, qhandle->index, qhandle);
117 *handle = (void *)qhandle;
118 return 0;
119}
120
121/**
122 * lpfc_nvme_delete_queue -
123 * @lpfc_pnvme: Pointer to the driver's nvme instance data
124 * @qidx: An cpu index used to affinitize IO queues and MSIX vectors.
125 * @handle: An opaque driver handle from lpfc_nvme_create_queue
126 *
127 * Driver registers this routine to free
128 * any internal data structures to bind the @qidx to its internal
129 * IO queues.
130 *
131 * Return value :
132 * 0 - Success
133 * TODO: What are the failure codes.
134 **/
135static void
136lpfc_nvme_delete_queue(struct nvme_fc_local_port *pnvme_lport,
137 unsigned int qidx,
138 void *handle)
139{
140 struct lpfc_nvme_lport *lport;
141 struct lpfc_vport *vport;
142
143 lport = (struct lpfc_nvme_lport *)pnvme_lport->private;
144 vport = lport->vport;
145
146 lpfc_printf_vlog(vport, KERN_INFO, LOG_NVME,
147 "6001 ENTER. lpfc_pnvme %p, qidx x%xi qhandle %p\n",
148 lport, qidx, handle);
149 kfree(handle);
150}
151
152static void
153lpfc_nvme_localport_delete(struct nvme_fc_local_port *localport)
154{
155 struct lpfc_nvme_lport *lport = localport->private;
156
157 /* release any threads waiting for the unreg to complete */
158 complete(&lport->lport_unreg_done);
159}
160
161/* lpfc_nvme_remoteport_delete
162 *
163 * @remoteport: Pointer to an nvme transport remoteport instance.
164 *
165 * This is a template downcall. NVME transport calls this function
166 * when it has completed the unregistration of a previously
167 * registered remoteport.
168 *
169 * Return value :
170 * None
171 */
172void
173lpfc_nvme_remoteport_delete(struct nvme_fc_remote_port *remoteport)
174{
175 struct lpfc_nvme_rport *rport = remoteport->private;
176 struct lpfc_vport *vport;
177 struct lpfc_nodelist *ndlp;
178
179 ndlp = rport->ndlp;
180 if (!ndlp)
181 goto rport_err;
182
183 vport = ndlp->vport;
184 if (!vport)
185 goto rport_err;
186
187 /* Remove this rport from the lport's list - memory is owned by the
188 * transport. Remove the ndlp reference for the NVME transport before
7a06dcd3 189 * calling state machine to remove the node.
01649561
JS		 190 */
191 lpfc_printf_vlog(vport, KERN_INFO, LOG_NVME_DISC,
192 "6146 remoteport delete complete %p\n",
193 remoteport);
7a06dcd3 194 ndlp->nrport = NULL;
01649561
JS		 195 lpfc_nlp_put(ndlp);
196
197 rport_err:
198 /* This call has to execute as long as the rport is valid.
199 * Release any threads waiting for the unreg to complete.
200 */
201 complete(&rport->rport_unreg_done);
202}
203
204static void
205lpfc_nvme_cmpl_gen_req(struct lpfc_hba *phba, struct lpfc_iocbq *cmdwqe,
206 struct lpfc_wcqe_complete *wcqe)
207{
208 struct lpfc_vport *vport = cmdwqe->vport;
209 uint32_t status;
210 struct nvmefc_ls_req *pnvme_lsreq;
211 struct lpfc_dmabuf *buf_ptr;
212 struct lpfc_nodelist *ndlp;
213
2cee7808 214 atomic_inc(&vport->phba->fc4NvmeLsCmpls);
01649561
JS		 215
216 pnvme_lsreq = (struct nvmefc_ls_req *)cmdwqe->context2;
217 status = bf_get(lpfc_wcqe_c_status, wcqe) & LPFC_IOCB_STATUS_MASK;
218 ndlp = (struct lpfc_nodelist *)cmdwqe->context1;
219 lpfc_printf_vlog(vport, KERN_INFO, LOG_NVME_DISC,
220 "6047 nvme cmpl Enter "
221 "Data %p DID %x Xri: %x status %x cmd:%p lsreg:%p "
222 "bmp:%p ndlp:%p\n",
223 pnvme_lsreq, ndlp ? ndlp->nlp_DID : 0,
224 cmdwqe->sli4_xritag, status,
225 cmdwqe, pnvme_lsreq, cmdwqe->context3, ndlp);
226
bd2cdd5e
JS		 227 lpfc_nvmeio_data(phba, "NVME LS CMPL: xri x%x stat x%x parm x%x\n",
228 cmdwqe->sli4_xritag, status, wcqe->parameter);
229
01649561
JS		 230 if (cmdwqe->context3) {
231 buf_ptr = (struct lpfc_dmabuf *)cmdwqe->context3;
232 lpfc_mbuf_free(phba, buf_ptr->virt, buf_ptr->phys);
233 kfree(buf_ptr);
234 cmdwqe->context3 = NULL;
235 }
236 if (pnvme_lsreq->done)
237 pnvme_lsreq->done(pnvme_lsreq, status);
238 else
239 lpfc_printf_vlog(vport, KERN_ERR, LOG_NVME_DISC,
240 "6046 nvme cmpl without done call back? "
241 "Data %p DID %x Xri: %x status %x\n",
242 pnvme_lsreq, ndlp ? ndlp->nlp_DID : 0,
243 cmdwqe->sli4_xritag, status);
244 if (ndlp) {
245 lpfc_nlp_put(ndlp);
246 cmdwqe->context1 = NULL;
247 }
248 lpfc_sli_release_iocbq(phba, cmdwqe);
249}
250
251static int
252lpfc_nvme_gen_req(struct lpfc_vport *vport, struct lpfc_dmabuf *bmp,
253 struct lpfc_dmabuf *inp,
254 struct nvmefc_ls_req *pnvme_lsreq,
255 void (*cmpl)(struct lpfc_hba *, struct lpfc_iocbq *,
256 struct lpfc_wcqe_complete *),
257 struct lpfc_nodelist *ndlp, uint32_t num_entry,
258 uint32_t tmo, uint8_t retry)
259{
260 struct lpfc_hba *phba = vport->phba;
261 union lpfc_wqe *wqe;
262 struct lpfc_iocbq *genwqe;
263 struct ulp_bde64 *bpl;
264 struct ulp_bde64 bde;
265 int i, rc, xmit_len, first_len;
266
267 /* Allocate buffer for command WQE */
268 genwqe = lpfc_sli_get_iocbq(phba);
269 if (genwqe == NULL)
270 return 1;
271
272 wqe = &genwqe->wqe;
273 memset(wqe, 0, sizeof(union lpfc_wqe));
274
275 genwqe->context3 = (uint8_t *)bmp;
276 genwqe->iocb_flag |= LPFC_IO_NVME_LS;
277
278 /* Save for completion so we can release these resources */
279 genwqe->context1 = lpfc_nlp_get(ndlp);
280 genwqe->context2 = (uint8_t *)pnvme_lsreq;
281 /* Fill in payload, bp points to frame payload */
282
283 if (!tmo)
284 /* FC spec states we need 3 * ratov for CT requests */
285 tmo = (3 * phba->fc_ratov);
286
287 /* For this command calculate the xmit length of the request bde. */
288 xmit_len = 0;
289 first_len = 0;
290 bpl = (struct ulp_bde64 *)bmp->virt;
291 for (i = 0; i < num_entry; i++) {
292 bde.tus.w = bpl[i].tus.w;
293 if (bde.tus.f.bdeFlags != BUFF_TYPE_BDE_64)
294 break;
295 xmit_len += bde.tus.f.bdeSize;
296 if (i == 0)
297 first_len = xmit_len;
298 }
299
300 genwqe->rsvd2 = num_entry;
301 genwqe->hba_wqidx = 0;
302
303 /* Words 0 - 2 */
304 wqe->generic.bde.tus.f.bdeFlags = BUFF_TYPE_BDE_64;
305 wqe->generic.bde.tus.f.bdeSize = first_len;
306 wqe->generic.bde.addrLow = bpl[0].addrLow;
307 wqe->generic.bde.addrHigh = bpl[0].addrHigh;
308
309 /* Word 3 */
310 wqe->gen_req.request_payload_len = first_len;
311
312 /* Word 4 */
313
314 /* Word 5 */
315 bf_set(wqe_dfctl, &wqe->gen_req.wge_ctl, 0);
316 bf_set(wqe_si, &wqe->gen_req.wge_ctl, 1);
317 bf_set(wqe_la, &wqe->gen_req.wge_ctl, 1);
8b361639 318 bf_set(wqe_rctl, &wqe->gen_req.wge_ctl, FC_RCTL_ELS4_REQ);
01649561
JS		 319 bf_set(wqe_type, &wqe->gen_req.wge_ctl, FC_TYPE_NVME);
320
321 /* Word 6 */
322 bf_set(wqe_ctxt_tag, &wqe->gen_req.wqe_com,
323 phba->sli4_hba.rpi_ids[ndlp->nlp_rpi]);
324 bf_set(wqe_xri_tag, &wqe->gen_req.wqe_com, genwqe->sli4_xritag);
325
326 /* Word 7 */
327 bf_set(wqe_tmo, &wqe->gen_req.wqe_com, (vport->phba->fc_ratov-1));
328 bf_set(wqe_class, &wqe->gen_req.wqe_com, CLASS3);
329 bf_set(wqe_cmnd, &wqe->gen_req.wqe_com, CMD_GEN_REQUEST64_WQE);
330 bf_set(wqe_ct, &wqe->gen_req.wqe_com, SLI4_CT_RPI);
331
332 /* Word 8 */
333 wqe->gen_req.wqe_com.abort_tag = genwqe->iotag;
334
335 /* Word 9 */
336 bf_set(wqe_reqtag, &wqe->gen_req.wqe_com, genwqe->iotag);
337
338 /* Word 10 */
339 bf_set(wqe_dbde, &wqe->gen_req.wqe_com, 1);
340 bf_set(wqe_iod, &wqe->gen_req.wqe_com, LPFC_WQE_IOD_READ);
341 bf_set(wqe_qosd, &wqe->gen_req.wqe_com, 1);
342 bf_set(wqe_lenloc, &wqe->gen_req.wqe_com, LPFC_WQE_LENLOC_NONE);
343 bf_set(wqe_ebde_cnt, &wqe->gen_req.wqe_com, 0);
344
345 /* Word 11 */
346 bf_set(wqe_cqid, &wqe->gen_req.wqe_com, LPFC_WQE_CQ_ID_DEFAULT);
347 bf_set(wqe_cmd_type, &wqe->gen_req.wqe_com, OTHER_COMMAND);
348
349
350 /* Issue GEN REQ WQE for NPORT <did> */
351 lpfc_printf_vlog(vport, KERN_INFO, LOG_ELS,
352 "6050 Issue GEN REQ WQE to NPORT x%x "
353 "Data: x%x x%x wq:%p lsreq:%p bmp:%p xmit:%d 1st:%d\n",
354 ndlp->nlp_DID, genwqe->iotag,
355 vport->port_state,
356 genwqe, pnvme_lsreq, bmp, xmit_len, first_len);
357 genwqe->wqe_cmpl = cmpl;
358 genwqe->iocb_cmpl = NULL;
359 genwqe->drvrTimeout = tmo + LPFC_DRVR_TIMEOUT;
360 genwqe->vport = vport;
361 genwqe->retry = retry;
362
bd2cdd5e
JS		 363 lpfc_nvmeio_data(phba, "NVME LS XMIT: xri x%x iotag x%x to x%06x\n",
364 genwqe->sli4_xritag, genwqe->iotag, ndlp->nlp_DID);
365
01649561 366 rc = lpfc_sli4_issue_wqe(phba, LPFC_ELS_RING, genwqe);
cd22d605 367 if (rc) {
01649561
JS		 368 lpfc_printf_vlog(vport, KERN_ERR, LOG_ELS,
369 "6045 Issue GEN REQ WQE to NPORT x%x "
370 "Data: x%x x%x\n",
371 ndlp->nlp_DID, genwqe->iotag,
372 vport->port_state);
373 lpfc_sli_release_iocbq(phba, genwqe);
374 return 1;
375 }
376 return 0;
377}
378
379/**
380 * lpfc_nvme_ls_req - Issue an Link Service request
381 * @lpfc_pnvme: Pointer to the driver's nvme instance data
382 * @lpfc_nvme_lport: Pointer to the driver's local port data
383 * @lpfc_nvme_rport: Pointer to the rport getting the @lpfc_nvme_ereq
384 *
385 * Driver registers this routine to handle any link service request
386 * from the nvme_fc transport to a remote nvme-aware port.
387 *
388 * Return value :
389 * 0 - Success
390 * TODO: What are the failure codes.
391 **/
392static int
393lpfc_nvme_ls_req(struct nvme_fc_local_port *pnvme_lport,
394 struct nvme_fc_remote_port *pnvme_rport,
395 struct nvmefc_ls_req *pnvme_lsreq)
396{
397 int ret = 0;
398 struct lpfc_nvme_lport *lport;
399 struct lpfc_vport *vport;
400 struct lpfc_nodelist *ndlp;
401 struct ulp_bde64 *bpl;
402 struct lpfc_dmabuf *bmp;
ba43c4d0 403 uint16_t ntype, nstate;
01649561
JS		 404
405 /* there are two dma buf in the request, actually there is one and
406 * the second one is just the start address + cmd size.
407 * Before calling lpfc_nvme_gen_req these buffers need to be wrapped
408 * in a lpfc_dmabuf struct. When freeing we just free the wrapper
409 * because the nvem layer owns the data bufs.
410 * We do not have to break these packets open, we don't care what is in
411 * them. And we do not have to look at the resonse data, we only care
412 * that we got a response. All of the caring is going to happen in the
413 * nvme-fc layer.
414 */
415
416 lport = (struct lpfc_nvme_lport *)pnvme_lport->private;
417 vport = lport->vport;
418
419 ndlp = lpfc_findnode_did(vport, pnvme_rport->port_id);
ba43c4d0
JS		 420 if (!ndlp || !NLP_CHK_NODE_ACT(ndlp)) {
421 lpfc_printf_vlog(vport, KERN_ERR, LOG_NODE | LOG_NVME_IOERR,
422 "6051 DID x%06x not an active rport.\n",
01649561 423 pnvme_rport->port_id);
ba43c4d0
JS		 424 return -ENODEV;
425 }
426
427 /* The remote node has to be a mapped nvme target or an
428 * unmapped nvme initiator or it's an error.
429 */
430 ntype = ndlp->nlp_type;
431 nstate = ndlp->nlp_state;
432 if ((ntype & NLP_NVME_TARGET && nstate != NLP_STE_MAPPED_NODE) ||
433 (ntype & NLP_NVME_INITIATOR && nstate != NLP_STE_UNMAPPED_NODE)) {
434 lpfc_printf_vlog(vport, KERN_ERR, LOG_NODE | LOG_NVME_IOERR,
435 "6088 DID x%06x not ready for "
436 "IO. State x%x, Type x%x\n",
437 pnvme_rport->port_id,
438 ndlp->nlp_state, ndlp->nlp_type);
439 return -ENODEV;
01649561
JS		 440 }
441 bmp = kmalloc(sizeof(struct lpfc_dmabuf), GFP_KERNEL);
442 if (!bmp) {
443
444 lpfc_printf_vlog(vport, KERN_ERR, LOG_NVME_DISC,
445 "6044 Could not find node for DID %x\n",
446 pnvme_rport->port_id);
447 return 2;
448 }
449 INIT_LIST_HEAD(&bmp->list);
450 bmp->virt = lpfc_mbuf_alloc(vport->phba, MEM_PRI, &(bmp->phys));
451 if (!bmp->virt) {
452 lpfc_printf_vlog(vport, KERN_ERR, LOG_NVME_DISC,
453 "6042 Could not find node for DID %x\n",
454 pnvme_rport->port_id);
455 kfree(bmp);
456 return 3;
457 }
458 bpl = (struct ulp_bde64 *)bmp->virt;
459 bpl->addrHigh = le32_to_cpu(putPaddrHigh(pnvme_lsreq->rqstdma));
460 bpl->addrLow = le32_to_cpu(putPaddrLow(pnvme_lsreq->rqstdma));
461 bpl->tus.f.bdeFlags = 0;
462 bpl->tus.f.bdeSize = pnvme_lsreq->rqstlen;
463 bpl->tus.w = le32_to_cpu(bpl->tus.w);
464 bpl++;
465
466 bpl->addrHigh = le32_to_cpu(putPaddrHigh(pnvme_lsreq->rspdma));
467 bpl->addrLow = le32_to_cpu(putPaddrLow(pnvme_lsreq->rspdma));
468 bpl->tus.f.bdeFlags = BUFF_TYPE_BDE_64I;
469 bpl->tus.f.bdeSize = pnvme_lsreq->rsplen;
470 bpl->tus.w = le32_to_cpu(bpl->tus.w);
471
472 /* Expand print to include key fields. */
473 lpfc_printf_vlog(vport, KERN_INFO, LOG_NVME_DISC,
ba43c4d0 474 "6149 ENTER. lport %p, rport %p lsreq%p rqstlen:%d "
825c6abb 475 "rsplen:%d %pad %pad\n",
01649561
JS		 476 pnvme_lport, pnvme_rport,
477 pnvme_lsreq, pnvme_lsreq->rqstlen,
825c6abb
AB		 478 pnvme_lsreq->rsplen, &pnvme_lsreq->rqstdma,
479 &pnvme_lsreq->rspdma);
01649561 480
2cee7808 481 atomic_inc(&vport->phba->fc4NvmeLsRequests);
01649561
JS		 482
483 /* Hardcode the wait to 30 seconds. Connections are failing otherwise.
484 * This code allows it all to work.
485 */
486 ret = lpfc_nvme_gen_req(vport, bmp, pnvme_lsreq->rqstaddr,
487 pnvme_lsreq, lpfc_nvme_cmpl_gen_req,
488 ndlp, 2, 30, 0);
489 if (ret != WQE_SUCCESS) {
490 lpfc_printf_vlog(vport, KERN_INFO, LOG_NVME_DISC,
491 "6052 EXIT. issue ls wqe failed lport %p, "
492 "rport %p lsreq%p Status %x DID %x\n",
493 pnvme_lport, pnvme_rport, pnvme_lsreq,
494 ret, ndlp->nlp_DID);
495 lpfc_mbuf_free(vport->phba, bmp->virt, bmp->phys);
496 kfree(bmp);
497 return ret;
498 }
499
500 /* Stub in routine and return 0 for now. */
501 return ret;
502}
503
504/**
505 * lpfc_nvme_ls_abort - Issue an Link Service request
506 * @lpfc_pnvme: Pointer to the driver's nvme instance data
507 * @lpfc_nvme_lport: Pointer to the driver's local port data
508 * @lpfc_nvme_rport: Pointer to the rport getting the @lpfc_nvme_ereq
509 *
510 * Driver registers this routine to handle any link service request
511 * from the nvme_fc transport to a remote nvme-aware port.
512 *
513 * Return value :
514 * 0 - Success
515 * TODO: What are the failure codes.
516 **/
517static void
518lpfc_nvme_ls_abort(struct nvme_fc_local_port *pnvme_lport,
519 struct nvme_fc_remote_port *pnvme_rport,
520 struct nvmefc_ls_req *pnvme_lsreq)
521{
522 struct lpfc_nvme_lport *lport;
523 struct lpfc_vport *vport;
524 struct lpfc_hba *phba;
525 struct lpfc_nodelist *ndlp;
526 LIST_HEAD(abort_list);
527 struct lpfc_sli_ring *pring;
528 struct lpfc_iocbq *wqe, *next_wqe;
529
530 lport = (struct lpfc_nvme_lport *)pnvme_lport->private;
531 vport = lport->vport;
532 phba = vport->phba;
533
534 ndlp = lpfc_findnode_did(vport, pnvme_rport->port_id);
535 if (!ndlp) {
536 lpfc_printf_vlog(vport, KERN_ERR, LOG_NVME_ABTS,
537 "6049 Could not find node for DID %x\n",
538 pnvme_rport->port_id);
539 return;
540 }
541
542 /* Expand print to include key fields. */
543 lpfc_printf_vlog(vport, KERN_INFO, LOG_NVME_ABTS,
544 "6040 ENTER. lport %p, rport %p lsreq %p rqstlen:%d "
825c6abb 545 "rsplen:%d %pad %pad\n",
01649561
JS		 546 pnvme_lport, pnvme_rport,
547 pnvme_lsreq, pnvme_lsreq->rqstlen,
825c6abb
AB		 548 pnvme_lsreq->rsplen, &pnvme_lsreq->rqstdma,
549 &pnvme_lsreq->rspdma);
01649561
JS		 550
551 /*
552 * Lock the ELS ring txcmplq and build a local list of all ELS IOs
553 * that need an ABTS. The IOs need to stay on the txcmplq so that
554 * the abort operation completes them successfully.
555 */
556 pring = phba->sli4_hba.nvmels_wq->pring;
557 spin_lock_irq(&phba->hbalock);
558 spin_lock(&pring->ring_lock);
559 list_for_each_entry_safe(wqe, next_wqe, &pring->txcmplq, list) {
560 /* Add to abort_list on on NDLP match. */
561 if (lpfc_check_sli_ndlp(phba, pring, wqe, ndlp)) {
562 wqe->iocb_flag |= LPFC_DRIVER_ABORTED;
563 list_add_tail(&wqe->dlist, &abort_list);
564 }
565 }
566 spin_unlock(&pring->ring_lock);
567 spin_unlock_irq(&phba->hbalock);
568
569 /* Abort the targeted IOs and remove them from the abort list. */
570 list_for_each_entry_safe(wqe, next_wqe, &abort_list, dlist) {
571 spin_lock_irq(&phba->hbalock);
572 list_del_init(&wqe->dlist);
573 lpfc_sli_issue_abort_iotag(phba, pring, wqe);
574 spin_unlock_irq(&phba->hbalock);
575 }
576}
577
578/* Fix up the existing sgls for NVME IO. */
579static void
580lpfc_nvme_adj_fcp_sgls(struct lpfc_vport *vport,
581 struct lpfc_nvme_buf *lpfc_ncmd,
582 struct nvmefc_fcp_req *nCmd)
583{
584 struct sli4_sge *sgl;
585 union lpfc_wqe128 *wqe;
586 uint32_t *wptr, *dptr;
587
588 /*
589 * Adjust the FCP_CMD and FCP_RSP DMA data and sge_len to
590 * match NVME. NVME sends 96 bytes. Also, use the
591 * nvme commands command and response dma addresses
592 * rather than the virtual memory to ease the restore
593 * operation.
594 */
595 sgl = lpfc_ncmd->nvme_sgl;
596 sgl->sge_len = cpu_to_le32(nCmd->cmdlen);
597
598 sgl++;
599
600 /* Setup the physical region for the FCP RSP */
601 sgl->addr_hi = cpu_to_le32(putPaddrHigh(nCmd->rspdma));
602 sgl->addr_lo = cpu_to_le32(putPaddrLow(nCmd->rspdma));
603 sgl->word2 = le32_to_cpu(sgl->word2);
604 if (nCmd->sg_cnt)
605 bf_set(lpfc_sli4_sge_last, sgl, 0);
606 else
607 bf_set(lpfc_sli4_sge_last, sgl, 1);
608 sgl->word2 = cpu_to_le32(sgl->word2);
609 sgl->sge_len = cpu_to_le32(nCmd->rsplen);
610
611 /*
612 * Get a local pointer to the built-in wqe and correct
613 * the cmd size to match NVME's 96 bytes and fix
614 * the dma address.
615 */
616
617 /* 128 byte wqe support here */
618 wqe = (union lpfc_wqe128 *)&lpfc_ncmd->cur_iocbq.wqe;
619
620 /* Word 0-2 - NVME CMND IU (embedded payload) */
621 wqe->generic.bde.tus.f.bdeFlags = BUFF_TYPE_BDE_IMMED;
622 wqe->generic.bde.tus.f.bdeSize = 60;
623 wqe->generic.bde.addrHigh = 0;
624 wqe->generic.bde.addrLow = 64; /* Word 16 */
625
626 /* Word 3 */
627 bf_set(payload_offset_len, &wqe->fcp_icmd,
628 (nCmd->rsplen + nCmd->cmdlen));
629
630 /* Word 10 */
631 bf_set(wqe_nvme, &wqe->fcp_icmd.wqe_com, 1);
632 bf_set(wqe_wqes, &wqe->fcp_icmd.wqe_com, 1);
633
634 /*
635 * Embed the payload in the last half of the WQE
636 * WQE words 16-30 get the NVME CMD IU payload
637 *
b06a622f 638 * WQE words 16-19 get payload Words 1-4
01649561
JS		 639 * WQE words 20-21 get payload Words 6-7
640 * WQE words 22-29 get payload Words 16-23
641 */
b06a622f 642 wptr = &wqe->words[16]; /* WQE ptr */
01649561 643 dptr = (uint32_t *)nCmd->cmdaddr; /* payload ptr */
b06a622f 644 dptr++; /* Skip Word 0 in payload */
01649561 645
b06a622f 646 *wptr++ = *dptr++; /* Word 1 */
01649561
JS		 647 *wptr++ = *dptr++; /* Word 2 */
648 *wptr++ = *dptr++; /* Word 3 */
649 *wptr++ = *dptr++; /* Word 4 */
650 dptr++; /* Skip Word 5 in payload */
651 *wptr++ = *dptr++; /* Word 6 */
652 *wptr++ = *dptr++; /* Word 7 */
653 dptr += 8; /* Skip Words 8-15 in payload */
654 *wptr++ = *dptr++; /* Word 16 */
655 *wptr++ = *dptr++; /* Word 17 */
656 *wptr++ = *dptr++; /* Word 18 */
657 *wptr++ = *dptr++; /* Word 19 */
658 *wptr++ = *dptr++; /* Word 20 */
659 *wptr++ = *dptr++; /* Word 21 */
660 *wptr++ = *dptr++; /* Word 22 */
661 *wptr = *dptr; /* Word 23 */
662}
663
bd2cdd5e
JS		 664#ifdef CONFIG_SCSI_LPFC_DEBUG_FS
665static void
666lpfc_nvme_ktime(struct lpfc_hba *phba,
667 struct lpfc_nvme_buf *lpfc_ncmd)
668{
669 uint64_t seg1, seg2, seg3, seg4;
670
671 if (!phba->ktime_on)
672 return;
673 if (!lpfc_ncmd->ts_last_cmd ||
674 !lpfc_ncmd->ts_cmd_start ||
675 !lpfc_ncmd->ts_cmd_wqput ||
676 !lpfc_ncmd->ts_isr_cmpl ||
677 !lpfc_ncmd->ts_data_nvme)
678 return;
679 if (lpfc_ncmd->ts_cmd_start < lpfc_ncmd->ts_last_cmd)
680 return;
681 if (lpfc_ncmd->ts_cmd_wqput < lpfc_ncmd->ts_cmd_start)
682 return;
683 if (lpfc_ncmd->ts_isr_cmpl < lpfc_ncmd->ts_cmd_wqput)
684 return;
685 if (lpfc_ncmd->ts_data_nvme < lpfc_ncmd->ts_isr_cmpl)
686 return;
687 /*
688 * Segment 1 - Time from Last FCP command cmpl is handed
689 * off to NVME Layer to start of next command.
690 * Segment 2 - Time from Driver receives a IO cmd start
691 * from NVME Layer to WQ put is done on IO cmd.
692 * Segment 3 - Time from Driver WQ put is done on IO cmd
693 * to MSI-X ISR for IO cmpl.
694 * Segment 4 - Time from MSI-X ISR for IO cmpl to when
695 * cmpl is handled off to the NVME Layer.
696 */
697 seg1 = lpfc_ncmd->ts_cmd_start - lpfc_ncmd->ts_last_cmd;
698 if (seg1 > 5000000) /* 5 ms - for sequential IOs */
699 return;
700
701 /* Calculate times relative to start of IO */
702 seg2 = (lpfc_ncmd->ts_cmd_wqput - lpfc_ncmd->ts_cmd_start);
703 seg3 = (lpfc_ncmd->ts_isr_cmpl -
704 lpfc_ncmd->ts_cmd_start) - seg2;
705 seg4 = (lpfc_ncmd->ts_data_nvme -
706 lpfc_ncmd->ts_cmd_start) - seg2 - seg3;
707 phba->ktime_data_samples++;
708 phba->ktime_seg1_total += seg1;
709 if (seg1 < phba->ktime_seg1_min)
710 phba->ktime_seg1_min = seg1;
711 else if (seg1 > phba->ktime_seg1_max)
712 phba->ktime_seg1_max = seg1;
713 phba->ktime_seg2_total += seg2;
714 if (seg2 < phba->ktime_seg2_min)
715 phba->ktime_seg2_min = seg2;
716 else if (seg2 > phba->ktime_seg2_max)
717 phba->ktime_seg2_max = seg2;
718 phba->ktime_seg3_total += seg3;
719 if (seg3 < phba->ktime_seg3_min)
720 phba->ktime_seg3_min = seg3;
721 else if (seg3 > phba->ktime_seg3_max)
722 phba->ktime_seg3_max = seg3;
723 phba->ktime_seg4_total += seg4;
724 if (seg4 < phba->ktime_seg4_min)
725 phba->ktime_seg4_min = seg4;
726 else if (seg4 > phba->ktime_seg4_max)
727 phba->ktime_seg4_max = seg4;
728
729 lpfc_ncmd->ts_last_cmd = 0;
730 lpfc_ncmd->ts_cmd_start = 0;
731 lpfc_ncmd->ts_cmd_wqput = 0;
732 lpfc_ncmd->ts_isr_cmpl = 0;
733 lpfc_ncmd->ts_data_nvme = 0;
734}
735#endif
736
01649561
JS		 737/**
738 * lpfc_nvme_io_cmd_wqe_cmpl - Complete an NVME-over-FCP IO
739 * @lpfc_pnvme: Pointer to the driver's nvme instance data
740 * @lpfc_nvme_lport: Pointer to the driver's local port data
741 * @lpfc_nvme_rport: Pointer to the rport getting the @lpfc_nvme_ereq
742 *
743 * Driver registers this routine as it io request handler. This
744 * routine issues an fcp WQE with data from the @lpfc_nvme_fcpreq
745 * data structure to the rport indicated in @lpfc_nvme_rport.
746 *
747 * Return value :
748 * 0 - Success
749 * TODO: What are the failure codes.
750 **/
751static void
752lpfc_nvme_io_cmd_wqe_cmpl(struct lpfc_hba *phba, struct lpfc_iocbq *pwqeIn,
753 struct lpfc_wcqe_complete *wcqe)
754{
755 struct lpfc_nvme_buf *lpfc_ncmd =
756 (struct lpfc_nvme_buf *)pwqeIn->context1;
757 struct lpfc_vport *vport = pwqeIn->vport;
758 struct nvmefc_fcp_req *nCmd;
759 struct nvme_fc_ersp_iu *ep;
760 struct nvme_fc_cmd_iu *cp;
761 struct lpfc_nvme_rport *rport;
762 struct lpfc_nodelist *ndlp;
bbe3012b 763 struct lpfc_nvme_fcpreq_priv *freqpriv;
01649561
JS		 764 unsigned long flags;
765 uint32_t code;
766 uint16_t cid, sqhd, data;
767 uint32_t *ptr;
768
769 /* Sanity check on return of outstanding command */
770 if (!lpfc_ncmd || !lpfc_ncmd->nvmeCmd || !lpfc_ncmd->nrport) {
771 lpfc_printf_vlog(vport, KERN_ERR, LOG_NODE | LOG_NVME_IOERR,
772 "6071 Completion pointers bad on wqe %p.\n",
773 wcqe);
774 return;
775 }
2cee7808 776 atomic_inc(&phba->fc4NvmeIoCmpls);
01649561
JS		 777
778 nCmd = lpfc_ncmd->nvmeCmd;
779 rport = lpfc_ncmd->nrport;
780
bd2cdd5e
JS		 781 lpfc_nvmeio_data(phba, "NVME FCP CMPL: xri x%x stat x%x parm x%x\n",
782 lpfc_ncmd->cur_iocbq.sli4_xritag,
783 bf_get(lpfc_wcqe_c_status, wcqe), wcqe->parameter);
01649561
JS		 784 /*
785 * Catch race where our node has transitioned, but the
786 * transport is still transitioning.
787 */
788 ndlp = rport->ndlp;
789 if (!ndlp || !NLP_CHK_NODE_ACT(ndlp)) {
790 lpfc_printf_vlog(vport, KERN_ERR, LOG_NODE | LOG_NVME_IOERR,
c154e750
JS		 791 "6061 rport %p, DID x%06x node not ready.\n",
792 rport, rport->remoteport->port_id);
01649561
JS		 793
794 ndlp = lpfc_findnode_did(vport, rport->remoteport->port_id);
795 if (!ndlp) {
796 lpfc_printf_vlog(vport, KERN_ERR, LOG_NVME_IOERR,
797 "6062 Ignoring NVME cmpl. No ndlp\n");
798 goto out_err;
799 }
800 }
801
802 code = bf_get(lpfc_wcqe_c_code, wcqe);
803 if (code == CQE_CODE_NVME_ERSP) {
804 /* For this type of CQE, we need to rebuild the rsp */
805 ep = (struct nvme_fc_ersp_iu *)nCmd->rspaddr;
806
807 /*
808 * Get Command Id from cmd to plug into response. This
809 * code is not needed in the next NVME Transport drop.
810 */
811 cp = (struct nvme_fc_cmd_iu *)nCmd->cmdaddr;
812 cid = cp->sqe.common.command_id;
813
814 /*
815 * RSN is in CQE word 2
816 * SQHD is in CQE Word 3 bits 15:0
817 * Cmd Specific info is in CQE Word 1
818 * and in CQE Word 0 bits 15:0
819 */
820 sqhd = bf_get(lpfc_wcqe_c_sqhead, wcqe);
821
822 /* Now lets build the NVME ERSP IU */
823 ep->iu_len = cpu_to_be16(8);
824 ep->rsn = wcqe->parameter;
825 ep->xfrd_len = cpu_to_be32(nCmd->payload_length);
826 ep->rsvd12 = 0;
827 ptr = (uint32_t *)&ep->cqe.result.u64;
828 *ptr++ = wcqe->total_data_placed;
829 data = bf_get(lpfc_wcqe_c_ersp0, wcqe);
830 *ptr = (uint32_t)data;
831 ep->cqe.sq_head = sqhd;
832 ep->cqe.sq_id = nCmd->sqid;
833 ep->cqe.command_id = cid;
834 ep->cqe.status = 0;
835
836 lpfc_ncmd->status = IOSTAT_SUCCESS;
837 lpfc_ncmd->result = 0;
838 nCmd->rcv_rsplen = LPFC_NVME_ERSP_LEN;
839 nCmd->transferred_length = nCmd->payload_length;
840 } else {
841 lpfc_ncmd->status = (bf_get(lpfc_wcqe_c_status, wcqe) &
842 LPFC_IOCB_STATUS_MASK);
843 lpfc_ncmd->result = wcqe->parameter;
844
845 /* For NVME, the only failure path that results in an
846 * IO error is when the adapter rejects it. All other
847 * conditions are a success case and resolved by the
848 * transport.
849 * IOSTAT_FCP_RSP_ERROR means:
850 * 1. Length of data received doesn't match total
851 * transfer length in WQE
852 * 2. If the RSP payload does NOT match these cases:
853 * a. RSP length 12/24 bytes and all zeros
854 * b. NVME ERSP
855 */
856 switch (lpfc_ncmd->status) {
857 case IOSTAT_SUCCESS:
858 nCmd->transferred_length = wcqe->total_data_placed;
859 nCmd->rcv_rsplen = 0;
860 nCmd->status = 0;
861 break;
862 case IOSTAT_FCP_RSP_ERROR:
863 nCmd->transferred_length = wcqe->total_data_placed;
864 nCmd->rcv_rsplen = wcqe->parameter;
865 nCmd->status = 0;
866 /* Sanity check */
867 if (nCmd->rcv_rsplen == LPFC_NVME_ERSP_LEN)
868 break;
869 lpfc_printf_vlog(vport, KERN_ERR, LOG_NVME_IOERR,
870 "6081 NVME Completion Protocol Error: "
86c67379
JS		 871 "xri %x status x%x result x%x "
872 "placed x%x\n",
873 lpfc_ncmd->cur_iocbq.sli4_xritag,
01649561
JS		 874 lpfc_ncmd->status, lpfc_ncmd->result,
875 wcqe->total_data_placed);
876 break;
877 default:
878out_err:
879 lpfc_printf_vlog(vport, KERN_ERR, LOG_NVME_IOERR,
86c67379 880 "6072 NVME Completion Error: xri %x "
01649561 881 "status x%x result x%x placed x%x\n",
86c67379 882 lpfc_ncmd->cur_iocbq.sli4_xritag,
01649561
JS		 883 lpfc_ncmd->status, lpfc_ncmd->result,
884 wcqe->total_data_placed);
885 nCmd->transferred_length = 0;
886 nCmd->rcv_rsplen = 0;
887 nCmd->status = NVME_SC_FC_TRANSPORT_ERROR;
888 }
889 }
890
891 /* pick up SLI4 exhange busy condition */
892 if (bf_get(lpfc_wcqe_c_xb, wcqe))
893 lpfc_ncmd->flags |= LPFC_SBUF_XBUSY;
894 else
895 lpfc_ncmd->flags &= ~LPFC_SBUF_XBUSY;
896
897 if (ndlp && NLP_CHK_NODE_ACT(ndlp))
898 atomic_dec(&ndlp->cmd_pending);
899
900 /* Update stats and complete the IO. There is
901 * no need for dma unprep because the nvme_transport
902 * owns the dma address.
903 */
bd2cdd5e
JS		 904#ifdef CONFIG_SCSI_LPFC_DEBUG_FS
905 if (phba->ktime_on) {
906 lpfc_ncmd->ts_isr_cmpl = pwqeIn->isr_timestamp;
907 lpfc_ncmd->ts_data_nvme = ktime_get_ns();
908 phba->ktime_last_cmd = lpfc_ncmd->ts_data_nvme;
909 lpfc_nvme_ktime(phba, lpfc_ncmd);
910 }
911 if (phba->cpucheck_on & LPFC_CHECK_NVME_IO) {
912 if (lpfc_ncmd->cpu != smp_processor_id())
913 lpfc_printf_vlog(vport, KERN_ERR, LOG_NVME_IOERR,
914 "6701 CPU Check cmpl: "
915 "cpu %d expect %d\n",
916 smp_processor_id(), lpfc_ncmd->cpu);
917 if (lpfc_ncmd->cpu < LPFC_CHECK_CPU_CNT)
918 phba->cpucheck_cmpl_io[lpfc_ncmd->cpu]++;
919 }
920#endif
bbe3012b
JS		 921 freqpriv = nCmd->private;
922 freqpriv->nvme_buf = NULL;
01649561
JS		 923 nCmd->done(nCmd);
924
925 spin_lock_irqsave(&phba->hbalock, flags);
926 lpfc_ncmd->nrport = NULL;
927 spin_unlock_irqrestore(&phba->hbalock, flags);
928
929 lpfc_release_nvme_buf(phba, lpfc_ncmd);
930}
931
932
933/**
934 * lpfc_nvme_prep_io_cmd - Issue an NVME-over-FCP IO
935 * @lpfc_pnvme: Pointer to the driver's nvme instance data
936 * @lpfc_nvme_lport: Pointer to the driver's local port data
937 * @lpfc_nvme_rport: Pointer to the rport getting the @lpfc_nvme_ereq
938 * @lpfc_nvme_fcreq: IO request from nvme fc to driver.
939 * @hw_queue_handle: Driver-returned handle in lpfc_nvme_create_queue
940 *
941 * Driver registers this routine as it io request handler. This
942 * routine issues an fcp WQE with data from the @lpfc_nvme_fcpreq
943 * data structure to the rport indicated in @lpfc_nvme_rport.
944 *
945 * Return value :
946 * 0 - Success
947 * TODO: What are the failure codes.
948 **/
949static int
950lpfc_nvme_prep_io_cmd(struct lpfc_vport *vport,
951 struct lpfc_nvme_buf *lpfc_ncmd,
952 struct lpfc_nodelist *pnode)
953{
954 struct lpfc_hba *phba = vport->phba;
955 struct nvmefc_fcp_req *nCmd = lpfc_ncmd->nvmeCmd;
956 struct lpfc_iocbq *pwqeq = &(lpfc_ncmd->cur_iocbq);
957 union lpfc_wqe128 *wqe = (union lpfc_wqe128 *)&pwqeq->wqe;
958 uint32_t req_len;
959
960 if (!pnode || !NLP_CHK_NODE_ACT(pnode))
961 return -EINVAL;
962
963 /*
964 * There are three possibilities here - use scatter-gather segment, use
965 * the single mapping, or neither.
966 */
967 wqe->fcp_iwrite.initial_xfer_len = 0;
968 if (nCmd->sg_cnt) {
969 if (nCmd->io_dir == NVMEFC_FCP_WRITE) {
970 /* Word 5 */
971 if ((phba->cfg_nvme_enable_fb) &&
972 (pnode->nlp_flag & NLP_FIRSTBURST)) {
973 req_len = lpfc_ncmd->nvmeCmd->payload_length;
974 if (req_len < pnode->nvme_fb_size)
975 wqe->fcp_iwrite.initial_xfer_len =
976 req_len;
977 else
978 wqe->fcp_iwrite.initial_xfer_len =
979 pnode->nvme_fb_size;
980 }
981
982 /* Word 7 */
983 bf_set(wqe_cmnd, &wqe->generic.wqe_com,
984 CMD_FCP_IWRITE64_WQE);
985 bf_set(wqe_pu, &wqe->generic.wqe_com,
986 PARM_READ_CHECK);
987
988 /* Word 10 */
989 bf_set(wqe_qosd, &wqe->fcp_iwrite.wqe_com, 0);
990 bf_set(wqe_iod, &wqe->fcp_iwrite.wqe_com,
991 LPFC_WQE_IOD_WRITE);
992 bf_set(wqe_lenloc, &wqe->fcp_iwrite.wqe_com,
993 LPFC_WQE_LENLOC_WORD4);
994 if (phba->cfg_nvme_oas)
995 bf_set(wqe_oas, &wqe->fcp_iwrite.wqe_com, 1);
996
997 /* Word 11 */
998 bf_set(wqe_cmd_type, &wqe->generic.wqe_com,
999 NVME_WRITE_CMD);
1000
2cee7808 1001 atomic_inc(&phba->fc4NvmeOutputRequests);
01649561
JS		 1002 } else {
1003 /* Word 7 */
1004 bf_set(wqe_cmnd, &wqe->generic.wqe_com,
1005 CMD_FCP_IREAD64_WQE);
1006 bf_set(wqe_pu, &wqe->generic.wqe_com,
1007 PARM_READ_CHECK);
1008
1009 /* Word 10 */
1010 bf_set(wqe_qosd, &wqe->fcp_iread.wqe_com, 0);
1011 bf_set(wqe_iod, &wqe->fcp_iread.wqe_com,
1012 LPFC_WQE_IOD_READ);
1013 bf_set(wqe_lenloc, &wqe->fcp_iread.wqe_com,
1014 LPFC_WQE_LENLOC_WORD4);
1015 if (phba->cfg_nvme_oas)
1016 bf_set(wqe_oas, &wqe->fcp_iread.wqe_com, 1);
1017
1018 /* Word 11 */
1019 bf_set(wqe_cmd_type, &wqe->generic.wqe_com,
1020 NVME_READ_CMD);
1021
2cee7808 1022 atomic_inc(&phba->fc4NvmeInputRequests);
01649561
JS		 1023 }
1024 } else {
1025 /* Word 4 */
1026 wqe->fcp_icmd.rsrvd4 = 0;
1027
1028 /* Word 7 */
1029 bf_set(wqe_cmnd, &wqe->generic.wqe_com, CMD_FCP_ICMND64_WQE);
1030 bf_set(wqe_pu, &wqe->generic.wqe_com, 0);
1031
1032 /* Word 10 */
1033 bf_set(wqe_qosd, &wqe->fcp_icmd.wqe_com, 1);
1034 bf_set(wqe_iod, &wqe->fcp_icmd.wqe_com, LPFC_WQE_IOD_WRITE);
1035 bf_set(wqe_lenloc, &wqe->fcp_icmd.wqe_com,
1036 LPFC_WQE_LENLOC_NONE);
1037 if (phba->cfg_nvme_oas)
1038 bf_set(wqe_oas, &wqe->fcp_icmd.wqe_com, 1);
1039
1040 /* Word 11 */
1041 bf_set(wqe_cmd_type, &wqe->generic.wqe_com, NVME_READ_CMD);
1042
2cee7808 1043 atomic_inc(&phba->fc4NvmeControlRequests);
01649561
JS		 1044 }
1045 /*
1046 * Finish initializing those WQE fields that are independent
1047 * of the nvme_cmnd request_buffer
1048 */
1049
1050 /* Word 6 */
1051 bf_set(wqe_ctxt_tag, &wqe->generic.wqe_com,
1052 phba->sli4_hba.rpi_ids[pnode->nlp_rpi]);
1053 bf_set(wqe_xri_tag, &wqe->generic.wqe_com, pwqeq->sli4_xritag);
1054
1055 /* Word 7 */
1056 /* Preserve Class data in the ndlp. */
1057 bf_set(wqe_class, &wqe->generic.wqe_com,
1058 (pnode->nlp_fcp_info & 0x0f));
1059
1060 /* Word 8 */
1061 wqe->generic.wqe_com.abort_tag = pwqeq->iotag;
1062
1063 /* Word 9 */
1064 bf_set(wqe_reqtag, &wqe->generic.wqe_com, pwqeq->iotag);
1065
1066 /* Word 11 */
1067 bf_set(wqe_cqid, &wqe->generic.wqe_com, LPFC_WQE_CQ_ID_DEFAULT);
1068
1069 pwqeq->vport = vport;
1070 return 0;
1071}
1072
1073
1074/**
1075 * lpfc_nvme_prep_io_dma - Issue an NVME-over-FCP IO
1076 * @lpfc_pnvme: Pointer to the driver's nvme instance data
1077 * @lpfc_nvme_lport: Pointer to the driver's local port data
1078 * @lpfc_nvme_rport: Pointer to the rport getting the @lpfc_nvme_ereq
1079 * @lpfc_nvme_fcreq: IO request from nvme fc to driver.
1080 * @hw_queue_handle: Driver-returned handle in lpfc_nvme_create_queue
1081 *
1082 * Driver registers this routine as it io request handler. This
1083 * routine issues an fcp WQE with data from the @lpfc_nvme_fcpreq
1084 * data structure to the rport indicated in @lpfc_nvme_rport.
1085 *
1086 * Return value :
1087 * 0 - Success
1088 * TODO: What are the failure codes.
1089 **/
1090static int
1091lpfc_nvme_prep_io_dma(struct lpfc_vport *vport,
1092 struct lpfc_nvme_buf *lpfc_ncmd)
1093{
1094 struct lpfc_hba *phba = vport->phba;
1095 struct nvmefc_fcp_req *nCmd = lpfc_ncmd->nvmeCmd;
1096 union lpfc_wqe128 *wqe = (union lpfc_wqe128 *)&lpfc_ncmd->cur_iocbq.wqe;
1097 struct sli4_sge *sgl = lpfc_ncmd->nvme_sgl;
1098 struct scatterlist *data_sg;
1099 struct sli4_sge *first_data_sgl;
1100 dma_addr_t physaddr;
1101 uint32_t num_bde = 0;
1102 uint32_t dma_len;
1103 uint32_t dma_offset = 0;
1104 int nseg, i;
1105
1106 /* Fix up the command and response DMA stuff. */
1107 lpfc_nvme_adj_fcp_sgls(vport, lpfc_ncmd, nCmd);
1108
1109 /*
1110 * There are three possibilities here - use scatter-gather segment, use
1111 * the single mapping, or neither.
1112 */
1113 if (nCmd->sg_cnt) {
1114 /*
1115 * Jump over the cmd and rsp SGEs. The fix routine
1116 * has already adjusted for this.
1117 */
1118 sgl += 2;
1119
1120 first_data_sgl = sgl;
1121 lpfc_ncmd->seg_cnt = nCmd->sg_cnt;
4d4c4a4a 1122 if (lpfc_ncmd->seg_cnt > phba->cfg_nvme_seg_cnt) {
01649561
JS		 1123 lpfc_printf_log(phba, KERN_ERR, LOG_NVME_IOERR,
1124 "6058 Too many sg segments from "
1125 "NVME Transport. Max %d, "
1126 "nvmeIO sg_cnt %d\n",
4d4c4a4a 1127 phba->cfg_nvme_seg_cnt,
01649561
JS		 1128 lpfc_ncmd->seg_cnt);
1129 lpfc_ncmd->seg_cnt = 0;
1130 return 1;
1131 }
1132
1133 /*
1134 * The driver established a maximum scatter-gather segment count
1135 * during probe that limits the number of sg elements in any
1136 * single nvme command. Just run through the seg_cnt and format
1137 * the sge's.
1138 */
1139 nseg = nCmd->sg_cnt;
1140 data_sg = nCmd->first_sgl;
1141 for (i = 0; i < nseg; i++) {
1142 if (data_sg == NULL) {
1143 lpfc_printf_log(phba, KERN_ERR, LOG_NVME_IOERR,
1144 "6059 dptr err %d, nseg %d\n",
1145 i, nseg);
1146 lpfc_ncmd->seg_cnt = 0;
1147 return 1;
1148 }
1149 physaddr = data_sg->dma_address;
1150 dma_len = data_sg->length;
1151 sgl->addr_lo = cpu_to_le32(putPaddrLow(physaddr));
1152 sgl->addr_hi = cpu_to_le32(putPaddrHigh(physaddr));
1153 sgl->word2 = le32_to_cpu(sgl->word2);
1154 if ((num_bde + 1) == nseg)
1155 bf_set(lpfc_sli4_sge_last, sgl, 1);
1156 else
1157 bf_set(lpfc_sli4_sge_last, sgl, 0);
1158 bf_set(lpfc_sli4_sge_offset, sgl, dma_offset);
1159 bf_set(lpfc_sli4_sge_type, sgl, LPFC_SGE_TYPE_DATA);
1160 sgl->word2 = cpu_to_le32(sgl->word2);
1161 sgl->sge_len = cpu_to_le32(dma_len);
1162
1163 dma_offset += dma_len;
1164 data_sg = sg_next(data_sg);
1165 sgl++;
1166 }
1167 } else {
1168 /* For this clause to be valid, the payload_length
1169 * and sg_cnt must zero.
1170 */
1171 if (nCmd->payload_length != 0) {
1172 lpfc_printf_log(phba, KERN_ERR, LOG_NVME_IOERR,
1173 "6063 NVME DMA Prep Err: sg_cnt %d "
1174 "payload_length x%x\n",
1175 nCmd->sg_cnt, nCmd->payload_length);
1176 return 1;
1177 }
1178 }
1179
1180 /*
1181 * Due to difference in data length between DIF/non-DIF paths,
1182 * we need to set word 4 of WQE here
1183 */
1184 wqe->fcp_iread.total_xfer_len = nCmd->payload_length;
1185 return 0;
1186}
1187
1188/**
1189 * lpfc_nvme_fcp_io_submit - Issue an NVME-over-FCP IO
1190 * @lpfc_pnvme: Pointer to the driver's nvme instance data
1191 * @lpfc_nvme_lport: Pointer to the driver's local port data
1192 * @lpfc_nvme_rport: Pointer to the rport getting the @lpfc_nvme_ereq
1193 * @lpfc_nvme_fcreq: IO request from nvme fc to driver.
1194 * @hw_queue_handle: Driver-returned handle in lpfc_nvme_create_queue
1195 *
1196 * Driver registers this routine as it io request handler. This
1197 * routine issues an fcp WQE with data from the @lpfc_nvme_fcpreq
1198 * data structure to the rport
1199 indicated in @lpfc_nvme_rport.
1200 *
1201 * Return value :
1202 * 0 - Success
1203 * TODO: What are the failure codes.
1204 **/
1205static int
1206lpfc_nvme_fcp_io_submit(struct nvme_fc_local_port *pnvme_lport,
1207 struct nvme_fc_remote_port *pnvme_rport,
1208 void *hw_queue_handle,
1209 struct nvmefc_fcp_req *pnvme_fcreq)
1210{
1211 int ret = 0;
1212 struct lpfc_nvme_lport *lport;
1213 struct lpfc_vport *vport;
1214 struct lpfc_hba *phba;
1215 struct lpfc_nodelist *ndlp;
1216 struct lpfc_nvme_buf *lpfc_ncmd;
1217 struct lpfc_nvme_rport *rport;
1218 struct lpfc_nvme_qhandle *lpfc_queue_info;
bbe3012b 1219 struct lpfc_nvme_fcpreq_priv *freqpriv = pnvme_fcreq->private;
bd2cdd5e
JS		 1220#ifdef CONFIG_SCSI_LPFC_DEBUG_FS
1221 uint64_t start = 0;
1222#endif
01649561
JS		 1223
1224 lport = (struct lpfc_nvme_lport *)pnvme_lport->private;
1225 vport = lport->vport;
1226 phba = vport->phba;
1227
bd2cdd5e
JS		 1228#ifdef CONFIG_SCSI_LPFC_DEBUG_FS
1229 if (phba->ktime_on)
1230 start = ktime_get_ns();
1231#endif
01649561
JS		 1232 rport = (struct lpfc_nvme_rport *)pnvme_rport->private;
1233 lpfc_queue_info = (struct lpfc_nvme_qhandle *)hw_queue_handle;
1234
1235 /*
1236 * Catch race where our node has transitioned, but the
1237 * transport is still transitioning.
1238 */
1239 ndlp = rport->ndlp;
1240 if (!ndlp || !NLP_CHK_NODE_ACT(ndlp)) {
1241 lpfc_printf_vlog(vport, KERN_ERR, LOG_NODE | LOG_NVME_IOERR,
1242 "6053 rport %p, ndlp %p, DID x%06x "
1243 "ndlp not ready.\n",
1244 rport, ndlp, pnvme_rport->port_id);
1245
1246 ndlp = lpfc_findnode_did(vport, pnvme_rport->port_id);
1247 if (!ndlp) {
1248 lpfc_printf_vlog(vport, KERN_ERR, LOG_NVME_IOERR,
1249 "6066 Missing node for DID %x\n",
1250 pnvme_rport->port_id);
1251 ret = -ENODEV;
1252 goto out_fail;
1253 }
1254 }
1255
1256 /* The remote node has to be a mapped target or it's an error. */
1257 if ((ndlp->nlp_type & NLP_NVME_TARGET) &&
1258 (ndlp->nlp_state != NLP_STE_MAPPED_NODE)) {
1259 lpfc_printf_vlog(vport, KERN_ERR, LOG_NODE | LOG_NVME_IOERR,
1260 "6036 rport %p, DID x%06x not ready for "
1261 "IO. State x%x, Type x%x\n",
1262 rport, pnvme_rport->port_id,
1263 ndlp->nlp_state, ndlp->nlp_type);
1264 ret = -ENODEV;
1265 goto out_fail;
1266
1267 }
1268
1269 /* The node is shared with FCP IO, make sure the IO pending count does
1270 * not exceed the programmed depth.
1271 */
1272 if (atomic_read(&ndlp->cmd_pending) >= ndlp->cmd_qdepth) {
cd22d605 1273 ret = -EBUSY;
01649561
JS		 1274 goto out_fail;
1275 }
1276
1277 lpfc_ncmd = lpfc_get_nvme_buf(phba, ndlp);
1278 if (lpfc_ncmd == NULL) {
1279 lpfc_printf_vlog(vport, KERN_INFO, LOG_NVME_IOERR,
1280 "6065 driver's buffer pool is empty, "
1281 "IO failed\n");
cd22d605 1282 ret = -EBUSY;
01649561
JS		 1283 goto out_fail;
1284 }
bd2cdd5e
JS		 1285#ifdef CONFIG_SCSI_LPFC_DEBUG_FS
1286 if (phba->ktime_on) {
1287 lpfc_ncmd->ts_cmd_start = start;
1288 lpfc_ncmd->ts_last_cmd = phba->ktime_last_cmd;
1289 }
1290#endif
01649561
JS		 1291
1292 /*
1293 * Store the data needed by the driver to issue, abort, and complete
1294 * an IO.
1295 * Do not let the IO hang out forever. There is no midlayer issuing
1296 * an abort so inform the FW of the maximum IO pending time.
1297 */
bbe3012b 1298 freqpriv->nvme_buf = lpfc_ncmd;
01649561
JS		 1299 lpfc_ncmd->nvmeCmd = pnvme_fcreq;
1300 lpfc_ncmd->nrport = rport;
318083ad 1301 lpfc_ncmd->ndlp = ndlp;
01649561
JS		 1302 lpfc_ncmd->start_time = jiffies;
1303
1304 lpfc_nvme_prep_io_cmd(vport, lpfc_ncmd, ndlp);
1305 ret = lpfc_nvme_prep_io_dma(vport, lpfc_ncmd);
1306 if (ret) {
1307 ret = -ENOMEM;
1308 goto out_free_nvme_buf;
1309 }
1310
1311 atomic_inc(&ndlp->cmd_pending);
1312
1313 /*
1314 * Issue the IO on the WQ indicated by index in the hw_queue_handle.
1315 * This identfier was create in our hardware queue create callback
1316 * routine. The driver now is dependent on the IO queue steering from
1317 * the transport. We are trusting the upper NVME layers know which
1318 * index to use and that they have affinitized a CPU to this hardware
1319 * queue. A hardware queue maps to a driver MSI-X vector/EQ/CQ/WQ.
1320 */
1321 lpfc_ncmd->cur_iocbq.hba_wqidx = lpfc_queue_info->index;
1322
bd2cdd5e
JS		 1323 lpfc_nvmeio_data(phba, "NVME FCP XMIT: xri x%x idx %d to %06x\n",
1324 lpfc_ncmd->cur_iocbq.sli4_xritag,
1325 lpfc_queue_info->index, ndlp->nlp_DID);
1326
01649561
JS		 1327 ret = lpfc_sli4_issue_wqe(phba, LPFC_FCP_RING, &lpfc_ncmd->cur_iocbq);
1328 if (ret) {
1329 atomic_dec(&ndlp->cmd_pending);
1330 lpfc_printf_vlog(vport, KERN_ERR, LOG_NVME_IOERR,
1331 "6113 FCP could not issue WQE err %x "
1332 "sid: x%x did: x%x oxid: x%x\n",
1333 ret, vport->fc_myDID, ndlp->nlp_DID,
1334 lpfc_ncmd->cur_iocbq.sli4_xritag);
01649561
JS		 1335 goto out_free_nvme_buf;
1336 }
1337
bd2cdd5e
JS		 1338#ifdef CONFIG_SCSI_LPFC_DEBUG_FS
1339 if (phba->ktime_on)
1340 lpfc_ncmd->ts_cmd_wqput = ktime_get_ns();
1341
1342 if (phba->cpucheck_on & LPFC_CHECK_NVME_IO) {
1343 lpfc_ncmd->cpu = smp_processor_id();
1344 if (lpfc_ncmd->cpu != lpfc_queue_info->index) {
1345 /* Check for admin queue */
1346 if (lpfc_queue_info->qidx) {
1347 lpfc_printf_vlog(vport,
1348 KERN_ERR, LOG_NVME_IOERR,
1349 "6702 CPU Check cmd: "
1350 "cpu %d wq %d\n",
1351 lpfc_ncmd->cpu,
1352 lpfc_queue_info->index);
1353 }
1354 lpfc_ncmd->cpu = lpfc_queue_info->index;
1355 }
1356 if (lpfc_ncmd->cpu < LPFC_CHECK_CPU_CNT)
1357 phba->cpucheck_xmt_io[lpfc_ncmd->cpu]++;
1358 }
1359#endif
01649561
JS		 1360 return 0;
1361
1362 out_free_nvme_buf:
2cee7808
JS		 1363 if (lpfc_ncmd->nvmeCmd->sg_cnt) {
1364 if (lpfc_ncmd->nvmeCmd->io_dir == NVMEFC_FCP_WRITE)
1365 atomic_dec(&phba->fc4NvmeOutputRequests);
1366 else
1367 atomic_dec(&phba->fc4NvmeInputRequests);
1368 } else
1369 atomic_dec(&phba->fc4NvmeControlRequests);
01649561
JS		 1370 lpfc_release_nvme_buf(phba, lpfc_ncmd);
1371 out_fail:
1372 return ret;
1373}
1374
1375/**
1376 * lpfc_nvme_abort_fcreq_cmpl - Complete an NVME FCP abort request.
1377 * @phba: Pointer to HBA context object
1378 * @cmdiocb: Pointer to command iocb object.
1379 * @rspiocb: Pointer to response iocb object.
1380 *
1381 * This is the callback function for any NVME FCP IO that was aborted.
1382 *
1383 * Return value:
1384 * None
1385 **/
1386void
1387lpfc_nvme_abort_fcreq_cmpl(struct lpfc_hba *phba, struct lpfc_iocbq *cmdiocb,
1388 struct lpfc_wcqe_complete *abts_cmpl)
1389{
1390 lpfc_printf_log(phba, KERN_ERR, LOG_NVME,
1391 "6145 ABORT_XRI_CN completing on rpi x%x "
1392 "original iotag x%x, abort cmd iotag x%x "
1393 "req_tag x%x, status x%x, hwstatus x%x\n",
1394 cmdiocb->iocb.un.acxri.abortContextTag,
1395 cmdiocb->iocb.un.acxri.abortIoTag,
1396 cmdiocb->iotag,
1397 bf_get(lpfc_wcqe_c_request_tag, abts_cmpl),
1398 bf_get(lpfc_wcqe_c_status, abts_cmpl),
1399 bf_get(lpfc_wcqe_c_hw_status, abts_cmpl));
1400 lpfc_sli_release_iocbq(phba, cmdiocb);
1401}
1402
1403/**
1404 * lpfc_nvme_fcp_abort - Issue an NVME-over-FCP ABTS
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 its nvme request io abort handler. This
1412 * routine issues an fcp Abort WQE with data from the @lpfc_nvme_fcpreq
1413 * data structure to the rport indicated in @lpfc_nvme_rport. This routine
1414 * is executed asynchronously - one the target is validated as "MAPPED" and
1415 * ready for IO, the driver issues the abort request and returns.
1416 *
1417 * Return value:
1418 * None
1419 **/
1420static void
1421lpfc_nvme_fcp_abort(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 struct lpfc_nvme_lport *lport;
1427 struct lpfc_vport *vport;
1428 struct lpfc_hba *phba;
01649561
JS		 1429 struct lpfc_nvme_rport *rport;
1430 struct lpfc_nvme_buf *lpfc_nbuf;
1431 struct lpfc_iocbq *abts_buf;
1432 struct lpfc_iocbq *nvmereq_wqe;
bbe3012b 1433 struct lpfc_nvme_fcpreq_priv *freqpriv = pnvme_fcreq->private;
01649561
JS		 1434 union lpfc_wqe *abts_wqe;
1435 unsigned long flags;
1436 int ret_val;
1437
1438 lport = (struct lpfc_nvme_lport *)pnvme_lport->private;
1439 rport = (struct lpfc_nvme_rport *)pnvme_rport->private;
1440 vport = lport->vport;
1441 phba = vport->phba;
1442
1443 /* Announce entry to new IO submit field. */
86c67379 1444 lpfc_printf_vlog(vport, KERN_INFO, LOG_NVME_ABTS,
01649561
JS		 1445 "6002 Abort Request to rport DID x%06x "
1446 "for nvme_fc_req %p\n",
1447 pnvme_rport->port_id,
1448 pnvme_fcreq);
1449
01649561
JS		 1450 /* If the hba is getting reset, this flag is set. It is
1451 * cleared when the reset is complete and rings reestablished.
1452 */
1453 spin_lock_irqsave(&phba->hbalock, flags);
1454 /* driver queued commands are in process of being flushed */
1455 if (phba->hba_flag & HBA_NVME_IOQ_FLUSH) {
1456 spin_unlock_irqrestore(&phba->hbalock, flags);
86c67379 1457 lpfc_printf_vlog(vport, KERN_ERR, LOG_NVME_ABTS,
01649561
JS		 1458 "6139 Driver in reset cleanup - flushing "
1459 "NVME Req now. hba_flag x%x\n",
1460 phba->hba_flag);
1461 return;
1462 }
1463
bbe3012b 1464 lpfc_nbuf = freqpriv->nvme_buf;
01649561
JS		 1465 if (!lpfc_nbuf) {
1466 spin_unlock_irqrestore(&phba->hbalock, flags);
86c67379 1467 lpfc_printf_vlog(vport, KERN_ERR, LOG_NVME_ABTS,
01649561
JS		 1468 "6140 NVME IO req has no matching lpfc nvme "
1469 "io buffer. Skipping abort req.\n");
1470 return;
1471 } else if (!lpfc_nbuf->nvmeCmd) {
1472 spin_unlock_irqrestore(&phba->hbalock, flags);
86c67379 1473 lpfc_printf_vlog(vport, KERN_ERR, LOG_NVME_ABTS,
01649561
JS		 1474 "6141 lpfc NVME IO req has no nvme_fcreq "
1475 "io buffer. Skipping abort req.\n");
1476 return;
1477 }
2b7824d0 1478 nvmereq_wqe = &lpfc_nbuf->cur_iocbq;
01649561
JS		 1479
1480 /*
1481 * The lpfc_nbuf and the mapped nvme_fcreq in the driver's
1482 * state must match the nvme_fcreq passed by the nvme
1483 * transport. If they don't match, it is likely the driver
1484 * has already completed the NVME IO and the nvme transport
1485 * has not seen it yet.
1486 */
1487 if (lpfc_nbuf->nvmeCmd != pnvme_fcreq) {
1488 spin_unlock_irqrestore(&phba->hbalock, flags);
86c67379 1489 lpfc_printf_vlog(vport, KERN_ERR, LOG_NVME_ABTS,
01649561
JS		 1490 "6143 NVME req mismatch: "
1491 "lpfc_nbuf %p nvmeCmd %p, "
2b7824d0 1492 "pnvme_fcreq %p. Skipping Abort xri x%x\n",
01649561 1493 lpfc_nbuf, lpfc_nbuf->nvmeCmd,
2b7824d0 1494 pnvme_fcreq, nvmereq_wqe->sli4_xritag);
01649561
JS		 1495 return;
1496 }
1497
1498 /* Don't abort IOs no longer on the pending queue. */
01649561
JS		 1499 if (!(nvmereq_wqe->iocb_flag & LPFC_IO_ON_TXCMPLQ)) {
1500 spin_unlock_irqrestore(&phba->hbalock, flags);
86c67379 1501 lpfc_printf_vlog(vport, KERN_ERR, LOG_NVME_ABTS,
01649561 1502 "6142 NVME IO req %p not queued - skipping "
2b7824d0
JS		 1503 "abort req xri x%x\n",
1504 pnvme_fcreq, nvmereq_wqe->sli4_xritag);
01649561
JS		 1505 return;
1506 }
1507
bd2cdd5e
JS		 1508 lpfc_nvmeio_data(phba, "NVME FCP ABORT: xri x%x idx %d to %06x\n",
1509 nvmereq_wqe->sli4_xritag,
00cefeb9 1510 nvmereq_wqe->hba_wqidx, pnvme_rport->port_id);
bd2cdd5e 1511
01649561
JS		 1512 /* Outstanding abort is in progress */
1513 if (nvmereq_wqe->iocb_flag & LPFC_DRIVER_ABORTED) {
1514 spin_unlock_irqrestore(&phba->hbalock, flags);
86c67379 1515 lpfc_printf_vlog(vport, KERN_ERR, LOG_NVME_ABTS,
01649561
JS		 1516 "6144 Outstanding NVME I/O Abort Request "
1517 "still pending on nvme_fcreq %p, "
2b7824d0
JS		 1518 "lpfc_ncmd %p xri x%x\n",
1519 pnvme_fcreq, lpfc_nbuf,
1520 nvmereq_wqe->sli4_xritag);
01649561
JS		 1521 return;
1522 }
1523
1524 abts_buf = __lpfc_sli_get_iocbq(phba);
1525 if (!abts_buf) {
1526 spin_unlock_irqrestore(&phba->hbalock, flags);
86c67379 1527 lpfc_printf_vlog(vport, KERN_ERR, LOG_NVME_ABTS,
01649561 1528 "6136 No available abort wqes. Skipping "
2b7824d0
JS		 1529 "Abts req for nvme_fcreq %p xri x%x\n",
1530 pnvme_fcreq, nvmereq_wqe->sli4_xritag);
01649561
JS		 1531 return;
1532 }
1533
1534 /* Ready - mark outstanding as aborted by driver. */
1535 nvmereq_wqe->iocb_flag |= LPFC_DRIVER_ABORTED;
1536
1537 /* Complete prepping the abort wqe and issue to the FW. */
1538 abts_wqe = &abts_buf->wqe;
1539
1540 /* WQEs are reused. Clear stale data and set key fields to
1541 * zero like ia, iaab, iaar, xri_tag, and ctxt_tag.
1542 */
1543 memset(abts_wqe, 0, sizeof(union lpfc_wqe));
1544 bf_set(abort_cmd_criteria, &abts_wqe->abort_cmd, T_XRI_TAG);
1545
1546 /* word 7 */
1547 bf_set(wqe_ct, &abts_wqe->abort_cmd.wqe_com, 0);
1548 bf_set(wqe_cmnd, &abts_wqe->abort_cmd.wqe_com, CMD_ABORT_XRI_CX);
1549 bf_set(wqe_class, &abts_wqe->abort_cmd.wqe_com,
1550 nvmereq_wqe->iocb.ulpClass);
1551
1552 /* word 8 - tell the FW to abort the IO associated with this
1553 * outstanding exchange ID.
1554 */
1555 abts_wqe->abort_cmd.wqe_com.abort_tag = nvmereq_wqe->sli4_xritag;
1556
1557 /* word 9 - this is the iotag for the abts_wqe completion. */
1558 bf_set(wqe_reqtag, &abts_wqe->abort_cmd.wqe_com,
1559 abts_buf->iotag);
1560
1561 /* word 10 */
1562 bf_set(wqe_wqid, &abts_wqe->abort_cmd.wqe_com, nvmereq_wqe->hba_wqidx);
1563 bf_set(wqe_qosd, &abts_wqe->abort_cmd.wqe_com, 1);
1564 bf_set(wqe_lenloc, &abts_wqe->abort_cmd.wqe_com, LPFC_WQE_LENLOC_NONE);
1565
1566 /* word 11 */
1567 bf_set(wqe_cmd_type, &abts_wqe->abort_cmd.wqe_com, OTHER_COMMAND);
1568 bf_set(wqe_wqec, &abts_wqe->abort_cmd.wqe_com, 1);
1569 bf_set(wqe_cqid, &abts_wqe->abort_cmd.wqe_com, LPFC_WQE_CQ_ID_DEFAULT);
1570
1571 /* ABTS WQE must go to the same WQ as the WQE to be aborted */
1572 abts_buf->iocb_flag |= LPFC_IO_NVME;
1573 abts_buf->hba_wqidx = nvmereq_wqe->hba_wqidx;
1574 abts_buf->vport = vport;
1575 abts_buf->wqe_cmpl = lpfc_nvme_abort_fcreq_cmpl;
1576 ret_val = lpfc_sli4_issue_wqe(phba, LPFC_FCP_RING, abts_buf);
1577 spin_unlock_irqrestore(&phba->hbalock, flags);
cd22d605 1578 if (ret_val) {
86c67379 1579 lpfc_printf_vlog(vport, KERN_ERR, LOG_NVME_ABTS,
01649561
JS		 1580 "6137 Failed abts issue_wqe with status x%x "
1581 "for nvme_fcreq %p.\n",
1582 ret_val, pnvme_fcreq);
1583 lpfc_sli_release_iocbq(phba, abts_buf);
1584 return;
1585 }
1586
86c67379 1587 lpfc_printf_vlog(vport, KERN_INFO, LOG_NVME_ABTS,
2b7824d0 1588 "6138 Transport Abort NVME Request Issued for "
01649561
JS		 1589 "ox_id x%x on reqtag x%x\n",
1590 nvmereq_wqe->sli4_xritag,
1591 abts_buf->iotag);
1592}
1593
1594/* Declare and initialization an instance of the FC NVME template. */
1595static struct nvme_fc_port_template lpfc_nvme_template = {
1596 /* initiator-based functions */
1597 .localport_delete = lpfc_nvme_localport_delete,
1598 .remoteport_delete = lpfc_nvme_remoteport_delete,
1599 .create_queue = lpfc_nvme_create_queue,
1600 .delete_queue = lpfc_nvme_delete_queue,
1601 .ls_req = lpfc_nvme_ls_req,
1602 .fcp_io = lpfc_nvme_fcp_io_submit,
1603 .ls_abort = lpfc_nvme_ls_abort,
1604 .fcp_abort = lpfc_nvme_fcp_abort,
1605
1606 .max_hw_queues = 1,
1607 .max_sgl_segments = LPFC_NVME_DEFAULT_SEGS,
1608 .max_dif_sgl_segments = LPFC_NVME_DEFAULT_SEGS,
1609 .dma_boundary = 0xFFFFFFFF,
1610
1611 /* Sizes of additional private data for data structures.
1612 * No use for the last two sizes at this time.
1613 */
1614 .local_priv_sz = sizeof(struct lpfc_nvme_lport),
1615 .remote_priv_sz = sizeof(struct lpfc_nvme_rport),
1616 .lsrqst_priv_sz = 0,
bbe3012b 1617 .fcprqst_priv_sz = sizeof(struct lpfc_nvme_fcpreq_priv),
01649561
JS		 1618};
1619
1620/**
1621 * lpfc_sli4_post_nvme_sgl_block - post a block of nvme sgl list to firmware
1622 * @phba: pointer to lpfc hba data structure.
1623 * @nblist: pointer to nvme buffer list.
1624 * @count: number of scsi buffers on the list.
1625 *
1626 * This routine is invoked to post a block of @count scsi sgl pages from a
1627 * SCSI buffer list @nblist to the HBA using non-embedded mailbox command.
1628 * No Lock is held.
1629 *
1630 **/
1631static int
1632lpfc_sli4_post_nvme_sgl_block(struct lpfc_hba *phba,
1633 struct list_head *nblist,
1634 int count)
1635{
1636 struct lpfc_nvme_buf *lpfc_ncmd;
1637 struct lpfc_mbx_post_uembed_sgl_page1 *sgl;
1638 struct sgl_page_pairs *sgl_pg_pairs;
1639 void *viraddr;
1640 LPFC_MBOXQ_t *mbox;
1641 uint32_t reqlen, alloclen, pg_pairs;
1642 uint32_t mbox_tmo;
1643 uint16_t xritag_start = 0;
1644 int rc = 0;
1645 uint32_t shdr_status, shdr_add_status;
1646 dma_addr_t pdma_phys_bpl1;
1647 union lpfc_sli4_cfg_shdr *shdr;
1648
1649 /* Calculate the requested length of the dma memory */
1650 reqlen = count * sizeof(struct sgl_page_pairs) +
1651 sizeof(union lpfc_sli4_cfg_shdr) + sizeof(uint32_t);
1652 if (reqlen > SLI4_PAGE_SIZE) {
1653 lpfc_printf_log(phba, KERN_WARNING, LOG_INIT,
1654 "6118 Block sgl registration required DMA "
1655 "size (%d) great than a page\n", reqlen);
1656 return -ENOMEM;
1657 }
1658 mbox = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
1659 if (!mbox) {
1660 lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
1661 "6119 Failed to allocate mbox cmd memory\n");
1662 return -ENOMEM;
1663 }
1664
1665 /* Allocate DMA memory and set up the non-embedded mailbox command */
1666 alloclen = lpfc_sli4_config(phba, mbox, LPFC_MBOX_SUBSYSTEM_FCOE,
1667 LPFC_MBOX_OPCODE_FCOE_POST_SGL_PAGES, reqlen,
1668 LPFC_SLI4_MBX_NEMBED);
1669
1670 if (alloclen < reqlen) {
1671 lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
1672 "6120 Allocated DMA memory size (%d) is "
1673 "less than the requested DMA memory "
1674 "size (%d)\n", alloclen, reqlen);
1675 lpfc_sli4_mbox_cmd_free(phba, mbox);
1676 return -ENOMEM;
1677 }
1678
1679 /* Get the first SGE entry from the non-embedded DMA memory */
1680 viraddr = mbox->sge_array->addr[0];
1681
1682 /* Set up the SGL pages in the non-embedded DMA pages */
1683 sgl = (struct lpfc_mbx_post_uembed_sgl_page1 *)viraddr;
1684 sgl_pg_pairs = &sgl->sgl_pg_pairs;
1685
1686 pg_pairs = 0;
1687 list_for_each_entry(lpfc_ncmd, nblist, list) {
1688 /* Set up the sge entry */
1689 sgl_pg_pairs->sgl_pg0_addr_lo =
1690 cpu_to_le32(putPaddrLow(lpfc_ncmd->dma_phys_sgl));
1691 sgl_pg_pairs->sgl_pg0_addr_hi =
1692 cpu_to_le32(putPaddrHigh(lpfc_ncmd->dma_phys_sgl));
1693 if (phba->cfg_sg_dma_buf_size > SGL_PAGE_SIZE)
1694 pdma_phys_bpl1 = lpfc_ncmd->dma_phys_sgl +
1695 SGL_PAGE_SIZE;
1696 else
1697 pdma_phys_bpl1 = 0;
1698 sgl_pg_pairs->sgl_pg1_addr_lo =
1699 cpu_to_le32(putPaddrLow(pdma_phys_bpl1));
1700 sgl_pg_pairs->sgl_pg1_addr_hi =
1701 cpu_to_le32(putPaddrHigh(pdma_phys_bpl1));
1702 /* Keep the first xritag on the list */
1703 if (pg_pairs == 0)
1704 xritag_start = lpfc_ncmd->cur_iocbq.sli4_xritag;
1705 sgl_pg_pairs++;
1706 pg_pairs++;
1707 }
1708 bf_set(lpfc_post_sgl_pages_xri, sgl, xritag_start);
1709 bf_set(lpfc_post_sgl_pages_xricnt, sgl, pg_pairs);
1710 /* Perform endian conversion if necessary */
1711 sgl->word0 = cpu_to_le32(sgl->word0);
1712
1713 if (!phba->sli4_hba.intr_enable)
1714 rc = lpfc_sli_issue_mbox(phba, mbox, MBX_POLL);
1715 else {
1716 mbox_tmo = lpfc_mbox_tmo_val(phba, mbox);
1717 rc = lpfc_sli_issue_mbox_wait(phba, mbox, mbox_tmo);
1718 }
1719 shdr = (union lpfc_sli4_cfg_shdr *)&sgl->cfg_shdr;
1720 shdr_status = bf_get(lpfc_mbox_hdr_status, &shdr->response);
1721 shdr_add_status = bf_get(lpfc_mbox_hdr_add_status, &shdr->response);
1722 if (rc != MBX_TIMEOUT)
1723 lpfc_sli4_mbox_cmd_free(phba, mbox);
1724 if (shdr_status || shdr_add_status || rc) {
1725 lpfc_printf_log(phba, KERN_ERR, LOG_SLI,
1726 "6125 POST_SGL_BLOCK mailbox command failed "
1727 "status x%x add_status x%x mbx status x%x\n",
1728 shdr_status, shdr_add_status, rc);
1729 rc = -ENXIO;
1730 }
1731 return rc;
1732}
1733
1734/**
1735 * lpfc_post_nvme_sgl_list - Post blocks of nvme buffer sgls from a list
1736 * @phba: pointer to lpfc hba data structure.
1737 * @post_nblist: pointer to the nvme buffer list.
1738 *
1739 * This routine walks a list of nvme buffers that was passed in. It attempts
1740 * to construct blocks of nvme buffer sgls which contains contiguous xris and
1741 * uses the non-embedded SGL block post mailbox commands to post to the port.
1742 * For single NVME buffer sgl with non-contiguous xri, if any, it shall use
1743 * embedded SGL post mailbox command for posting. The @post_nblist passed in
1744 * must be local list, thus no lock is needed when manipulate the list.
1745 *
1746 * Returns: 0 = failure, non-zero number of successfully posted buffers.
1747 **/
1748static int
1749lpfc_post_nvme_sgl_list(struct lpfc_hba *phba,
1750 struct list_head *post_nblist, int sb_count)
1751{
1752 struct lpfc_nvme_buf *lpfc_ncmd, *lpfc_ncmd_next;
1753 int status, sgl_size;
1754 int post_cnt = 0, block_cnt = 0, num_posting = 0, num_posted = 0;
1755 dma_addr_t pdma_phys_sgl1;
1756 int last_xritag = NO_XRI;
1757 int cur_xritag;
1758 LIST_HEAD(prep_nblist);
1759 LIST_HEAD(blck_nblist);
1760 LIST_HEAD(nvme_nblist);
1761
1762 /* sanity check */
1763 if (sb_count <= 0)
1764 return -EINVAL;
1765
1766 sgl_size = phba->cfg_sg_dma_buf_size;
1767
1768 list_for_each_entry_safe(lpfc_ncmd, lpfc_ncmd_next, post_nblist, list) {
1769 list_del_init(&lpfc_ncmd->list);
1770 block_cnt++;
1771 if ((last_xritag != NO_XRI) &&
1772 (lpfc_ncmd->cur_iocbq.sli4_xritag != last_xritag + 1)) {
1773 /* a hole in xri block, form a sgl posting block */
1774 list_splice_init(&prep_nblist, &blck_nblist);
1775 post_cnt = block_cnt - 1;
1776 /* prepare list for next posting block */
1777 list_add_tail(&lpfc_ncmd->list, &prep_nblist);
1778 block_cnt = 1;
1779 } else {
1780 /* prepare list for next posting block */
1781 list_add_tail(&lpfc_ncmd->list, &prep_nblist);
1782 /* enough sgls for non-embed sgl mbox command */
1783 if (block_cnt == LPFC_NEMBED_MBOX_SGL_CNT) {
1784 list_splice_init(&prep_nblist, &blck_nblist);
1785 post_cnt = block_cnt;
1786 block_cnt = 0;
1787 }
1788 }
1789 num_posting++;
1790 last_xritag = lpfc_ncmd->cur_iocbq.sli4_xritag;
1791
1792 /* end of repost sgl list condition for NVME buffers */
1793 if (num_posting == sb_count) {
1794 if (post_cnt == 0) {
1795 /* last sgl posting block */
1796 list_splice_init(&prep_nblist, &blck_nblist);
1797 post_cnt = block_cnt;
1798 } else if (block_cnt == 1) {
1799 /* last single sgl with non-contiguous xri */
1800 if (sgl_size > SGL_PAGE_SIZE)
1801 pdma_phys_sgl1 =
1802 lpfc_ncmd->dma_phys_sgl +
1803 SGL_PAGE_SIZE;
1804 else
1805 pdma_phys_sgl1 = 0;
1806 cur_xritag = lpfc_ncmd->cur_iocbq.sli4_xritag;
1807 status = lpfc_sli4_post_sgl(phba,
1808 lpfc_ncmd->dma_phys_sgl,
1809 pdma_phys_sgl1, cur_xritag);
1810 if (status) {
1811 /* failure, put on abort nvme list */
318083ad 1812 lpfc_ncmd->flags |= LPFC_SBUF_XBUSY;
01649561
JS		 1813 } else {
1814 /* success, put on NVME buffer list */
318083ad 1815 lpfc_ncmd->flags &= ~LPFC_SBUF_XBUSY;
01649561
JS		 1816 lpfc_ncmd->status = IOSTAT_SUCCESS;
1817 num_posted++;
1818 }
1819 /* success, put on NVME buffer sgl list */
1820 list_add_tail(&lpfc_ncmd->list, &nvme_nblist);
1821 }
1822 }
1823
1824 /* continue until a nembed page worth of sgls */
1825 if (post_cnt == 0)
1826 continue;
1827
1828 /* post block of NVME buffer list sgls */
1829 status = lpfc_sli4_post_nvme_sgl_block(phba, &blck_nblist,
1830 post_cnt);
1831
1832 /* don't reset xirtag due to hole in xri block */
1833 if (block_cnt == 0)
1834 last_xritag = NO_XRI;
1835
1836 /* reset NVME buffer post count for next round of posting */
1837 post_cnt = 0;
1838
1839 /* put posted NVME buffer-sgl posted on NVME buffer sgl list */
1840 while (!list_empty(&blck_nblist)) {
1841 list_remove_head(&blck_nblist, lpfc_ncmd,
1842 struct lpfc_nvme_buf, list);
1843 if (status) {
1844 /* failure, put on abort nvme list */
318083ad 1845 lpfc_ncmd->flags |= LPFC_SBUF_XBUSY;
01649561
JS		 1846 } else {
1847 /* success, put on NVME buffer list */
318083ad 1848 lpfc_ncmd->flags &= ~LPFC_SBUF_XBUSY;
01649561
JS		 1849 lpfc_ncmd->status = IOSTAT_SUCCESS;
1850 num_posted++;
1851 }
1852 list_add_tail(&lpfc_ncmd->list, &nvme_nblist);
1853 }
1854 }
1855 /* Push NVME buffers with sgl posted to the available list */
1856 while (!list_empty(&nvme_nblist)) {
1857 list_remove_head(&nvme_nblist, lpfc_ncmd,
1858 struct lpfc_nvme_buf, list);
1859 lpfc_release_nvme_buf(phba, lpfc_ncmd);
1860 }
1861 return num_posted;
1862}
1863
1864/**
1865 * lpfc_repost_nvme_sgl_list - Repost all the allocated nvme buffer sgls
1866 * @phba: pointer to lpfc hba data structure.
1867 *
1868 * This routine walks the list of nvme buffers that have been allocated and
1869 * repost them to the port by using SGL block post. This is needed after a
1870 * pci_function_reset/warm_start or start. The lpfc_hba_down_post_s4 routine
1871 * is responsible for moving all nvme buffers on the lpfc_abts_nvme_sgl_list
1872 * to the lpfc_nvme_buf_list. If the repost fails, reject all nvme buffers.
1873 *
1874 * Returns: 0 = success, non-zero failure.
1875 **/
1876int
1877lpfc_repost_nvme_sgl_list(struct lpfc_hba *phba)
1878{
1879 LIST_HEAD(post_nblist);
1880 int num_posted, rc = 0;
1881
1882 /* get all NVME buffers need to repost to a local list */
1883 spin_lock_irq(&phba->nvme_buf_list_get_lock);
1884 spin_lock(&phba->nvme_buf_list_put_lock);
1885 list_splice_init(&phba->lpfc_nvme_buf_list_get, &post_nblist);
1886 list_splice(&phba->lpfc_nvme_buf_list_put, &post_nblist);
1887 spin_unlock(&phba->nvme_buf_list_put_lock);
1888 spin_unlock_irq(&phba->nvme_buf_list_get_lock);
1889
1890 /* post the list of nvme buffer sgls to port if available */
1891 if (!list_empty(&post_nblist)) {
1892 num_posted = lpfc_post_nvme_sgl_list(phba, &post_nblist,
1893 phba->sli4_hba.nvme_xri_cnt);
1894 /* failed to post any nvme buffer, return error */
1895 if (num_posted == 0)
1896 rc = -EIO;
1897 }
1898 return rc;
1899}
1900
1901/**
1902 * lpfc_new_nvme_buf - Scsi buffer allocator for HBA with SLI4 IF spec
1903 * @vport: The virtual port for which this call being executed.
1904 * @num_to_allocate: The requested number of buffers to allocate.
1905 *
1906 * This routine allocates nvme buffers for device with SLI-4 interface spec,
1907 * the nvme buffer contains all the necessary information needed to initiate
1908 * a NVME I/O. After allocating up to @num_to_allocate NVME buffers and put
1909 * them on a list, it post them to the port by using SGL block post.
1910 *
1911 * Return codes:
1912 * int - number of nvme buffers that were allocated and posted.
1913 * 0 = failure, less than num_to_alloc is a partial failure.
1914 **/
1915static int
1916lpfc_new_nvme_buf(struct lpfc_vport *vport, int num_to_alloc)
1917{
1918 struct lpfc_hba *phba = vport->phba;
1919 struct lpfc_nvme_buf *lpfc_ncmd;
1920 struct lpfc_iocbq *pwqeq;
1921 union lpfc_wqe128 *wqe;
1922 struct sli4_sge *sgl;
1923 dma_addr_t pdma_phys_sgl;
1924 uint16_t iotag, lxri = 0;
1925 int bcnt, num_posted, sgl_size;
1926 LIST_HEAD(prep_nblist);
1927 LIST_HEAD(post_nblist);
1928 LIST_HEAD(nvme_nblist);
1929
1930 sgl_size = phba->cfg_sg_dma_buf_size;
1931
1932 for (bcnt = 0; bcnt < num_to_alloc; bcnt++) {
1933 lpfc_ncmd = kzalloc(sizeof(struct lpfc_nvme_buf), GFP_KERNEL);
1934 if (!lpfc_ncmd)
1935 break;
1936 /*
1937 * Get memory from the pci pool to map the virt space to
1938 * pci bus space for an I/O. The DMA buffer includes the
1939 * number of SGE's necessary to support the sg_tablesize.
1940 */
771db5c0 1941 lpfc_ncmd->data = dma_pool_alloc(phba->lpfc_sg_dma_buf_pool,
01649561
JS		 1942 GFP_KERNEL,
1943 &lpfc_ncmd->dma_handle);
1944 if (!lpfc_ncmd->data) {
1945 kfree(lpfc_ncmd);
1946 break;
1947 }
1948 memset(lpfc_ncmd->data, 0, phba->cfg_sg_dma_buf_size);
1949
1950 lxri = lpfc_sli4_next_xritag(phba);
1951 if (lxri == NO_XRI) {
771db5c0 1952 dma_pool_free(phba->lpfc_sg_dma_buf_pool,
01649561
JS		 1953 lpfc_ncmd->data, lpfc_ncmd->dma_handle);
1954 kfree(lpfc_ncmd);
1955 break;
1956 }
1957 pwqeq = &(lpfc_ncmd->cur_iocbq);
1958 wqe = (union lpfc_wqe128 *)&pwqeq->wqe;
1959
1960 /* Allocate iotag for lpfc_ncmd->cur_iocbq. */
1961 iotag = lpfc_sli_next_iotag(phba, pwqeq);
1962 if (iotag == 0) {
771db5c0 1963 dma_pool_free(phba->lpfc_sg_dma_buf_pool,
01649561
JS		 1964 lpfc_ncmd->data, lpfc_ncmd->dma_handle);
1965 kfree(lpfc_ncmd);
1966 lpfc_printf_log(phba, KERN_ERR, LOG_NVME_IOERR,
1967 "6121 Failed to allocated IOTAG for"
1968 " XRI:0x%x\n", lxri);
1969 lpfc_sli4_free_xri(phba, lxri);
1970 break;
1971 }
1972 pwqeq->sli4_lxritag = lxri;
1973 pwqeq->sli4_xritag = phba->sli4_hba.xri_ids[lxri];
1974 pwqeq->iocb_flag |= LPFC_IO_NVME;
1975 pwqeq->context1 = lpfc_ncmd;
1976 pwqeq->wqe_cmpl = lpfc_nvme_io_cmd_wqe_cmpl;
1977
1978 /* Initialize local short-hand pointers. */
1979 lpfc_ncmd->nvme_sgl = lpfc_ncmd->data;
1980 sgl = lpfc_ncmd->nvme_sgl;
1981 pdma_phys_sgl = lpfc_ncmd->dma_handle;
1982 lpfc_ncmd->dma_phys_sgl = pdma_phys_sgl;
1983
1984 /* Rsp SGE will be filled in when we rcv an IO
1985 * from the NVME Layer to be sent.
1986 * The cmd is going to be embedded so we need a SKIP SGE.
1987 */
1988 bf_set(lpfc_sli4_sge_type, sgl, LPFC_SGE_TYPE_SKIP);
1989 bf_set(lpfc_sli4_sge_last, sgl, 0);
1990 sgl->word2 = cpu_to_le32(sgl->word2);
1991 /* Fill in word 3 / sgl_len during cmd submission */
1992
1993 lpfc_ncmd->cur_iocbq.context1 = lpfc_ncmd;
1994
1995 /* Word 7 */
1996 bf_set(wqe_erp, &wqe->generic.wqe_com, 0);
1997 /* NVME upper layers will time things out, if needed */
1998 bf_set(wqe_tmo, &wqe->generic.wqe_com, 0);
1999
2000 /* Word 10 */
2001 bf_set(wqe_ebde_cnt, &wqe->generic.wqe_com, 0);
2002 bf_set(wqe_dbde, &wqe->generic.wqe_com, 1);
2003
2004 /* add the nvme buffer to a post list */
2005 list_add_tail(&lpfc_ncmd->list, &post_nblist);
2006 spin_lock_irq(&phba->nvme_buf_list_get_lock);
2007 phba->sli4_hba.nvme_xri_cnt++;
2008 spin_unlock_irq(&phba->nvme_buf_list_get_lock);
2009 }
2010 lpfc_printf_log(phba, KERN_INFO, LOG_NVME,
2011 "6114 Allocate %d out of %d requested new NVME "
2012 "buffers\n", bcnt, num_to_alloc);
2013
2014 /* post the list of nvme buffer sgls to port if available */
2015 if (!list_empty(&post_nblist))
2016 num_posted = lpfc_post_nvme_sgl_list(phba,
2017 &post_nblist, bcnt);
2018 else
2019 num_posted = 0;
2020
2021 return num_posted;
2022}
2023
2024/**
2025 * lpfc_get_nvme_buf - Get a nvme buffer from lpfc_nvme_buf_list of the HBA
2026 * @phba: The HBA for which this call is being executed.
2027 *
2028 * This routine removes a nvme buffer from head of @phba lpfc_nvme_buf_list list
2029 * and returns to caller.
2030 *
2031 * Return codes:
2032 * NULL - Error
2033 * Pointer to lpfc_nvme_buf - Success
2034 **/
2035static struct lpfc_nvme_buf *
2036lpfc_get_nvme_buf(struct lpfc_hba *phba, struct lpfc_nodelist *ndlp)
2037{
2038 struct lpfc_nvme_buf *lpfc_ncmd, *lpfc_ncmd_next;
2039 unsigned long iflag = 0;
2040 int found = 0;
2041
2042 spin_lock_irqsave(&phba->nvme_buf_list_get_lock, iflag);
2043 list_for_each_entry_safe(lpfc_ncmd, lpfc_ncmd_next,
2044 &phba->lpfc_nvme_buf_list_get, list) {
2045 if (lpfc_test_rrq_active(phba, ndlp,
2046 lpfc_ncmd->cur_iocbq.sli4_lxritag))
2047 continue;
bbe3012b 2048 list_del_init(&lpfc_ncmd->list);
01649561
JS		 2049 found = 1;
2050 break;
2051 }
2052 if (!found) {
2053 spin_lock(&phba->nvme_buf_list_put_lock);
2054 list_splice(&phba->lpfc_nvme_buf_list_put,
2055 &phba->lpfc_nvme_buf_list_get);
2056 INIT_LIST_HEAD(&phba->lpfc_nvme_buf_list_put);
2057 spin_unlock(&phba->nvme_buf_list_put_lock);
2058 list_for_each_entry_safe(lpfc_ncmd, lpfc_ncmd_next,
2059 &phba->lpfc_nvme_buf_list_get, list) {
2060 if (lpfc_test_rrq_active(
2061 phba, ndlp, lpfc_ncmd->cur_iocbq.sli4_lxritag))
2062 continue;
bbe3012b 2063 list_del_init(&lpfc_ncmd->list);
01649561
JS		 2064 found = 1;
2065 break;
2066 }
2067 }
2068 spin_unlock_irqrestore(&phba->nvme_buf_list_get_lock, iflag);
2069 if (!found)
2070 return NULL;
2071 return lpfc_ncmd;
2072}
2073
2074/**
2075 * lpfc_release_nvme_buf: Return a nvme buffer back to hba nvme buf list.
2076 * @phba: The Hba for which this call is being executed.
2077 * @lpfc_ncmd: The nvme buffer which is being released.
2078 *
2079 * This routine releases @lpfc_ncmd nvme buffer by adding it to tail of @phba
2080 * lpfc_nvme_buf_list list. For SLI4 XRI's are tied to the nvme buffer
2081 * and cannot be reused for at least RA_TOV amount of time if it was
2082 * aborted.
2083 **/
2084static void
2085lpfc_release_nvme_buf(struct lpfc_hba *phba, struct lpfc_nvme_buf *lpfc_ncmd)
2086{
2087 unsigned long iflag = 0;
2088
2089 lpfc_ncmd->nonsg_phys = 0;
318083ad 2090 if (lpfc_ncmd->flags & LPFC_SBUF_XBUSY) {
86c67379
JS		 2091 lpfc_printf_log(phba, KERN_INFO, LOG_NVME_ABTS,
2092 "6310 XB release deferred for "
2093 "ox_id x%x on reqtag x%x\n",
2094 lpfc_ncmd->cur_iocbq.sli4_xritag,
2095 lpfc_ncmd->cur_iocbq.iotag);
2096
01649561
JS		 2097 spin_lock_irqsave(&phba->sli4_hba.abts_nvme_buf_list_lock,
2098 iflag);
2099 lpfc_ncmd->nvmeCmd = NULL;
2100 list_add_tail(&lpfc_ncmd->list,
2101 &phba->sli4_hba.lpfc_abts_nvme_buf_list);
2102 spin_unlock_irqrestore(&phba->sli4_hba.abts_nvme_buf_list_lock,
2103 iflag);
2104 } else {
2105 lpfc_ncmd->nvmeCmd = NULL;
2106 lpfc_ncmd->cur_iocbq.iocb_flag = LPFC_IO_NVME;
2107 spin_lock_irqsave(&phba->nvme_buf_list_put_lock, iflag);
2108 list_add_tail(&lpfc_ncmd->list, &phba->lpfc_nvme_buf_list_put);
2109 spin_unlock_irqrestore(&phba->nvme_buf_list_put_lock, iflag);
2110 }
2111}
2112
2113/**
2114 * lpfc_nvme_create_localport - Create/Bind an nvme localport instance.
2115 * @pvport - the lpfc_vport instance requesting a localport.
2116 *
2117 * This routine is invoked to create an nvme localport instance to bind
2118 * to the nvme_fc_transport. It is called once during driver load
2119 * like lpfc_create_shost after all other services are initialized.
2120 * It requires a vport, vpi, and wwns at call time. Other localport
2121 * parameters are modified as the driver's FCID and the Fabric WWN
2122 * are established.
2123 *
2124 * Return codes
2125 * 0 - successful
2126 * -ENOMEM - no heap memory available
2127 * other values - from nvme registration upcall
2128 **/
2129int
2130lpfc_nvme_create_localport(struct lpfc_vport *vport)
2131{
166d7211 2132 int ret = 0;
01649561
JS		 2133 struct lpfc_hba *phba = vport->phba;
2134 struct nvme_fc_port_info nfcp_info;
2135 struct nvme_fc_local_port *localport;
2136 struct lpfc_nvme_lport *lport;
166d7211 2137 int len;
01649561
JS		 2138
2139 /* Initialize this localport instance. The vport wwn usage ensures
2140 * that NPIV is accounted for.
2141 */
2142 memset(&nfcp_info, 0, sizeof(struct nvme_fc_port_info));
2143 nfcp_info.port_role = FC_PORT_ROLE_NVME_INITIATOR;
2144 nfcp_info.node_name = wwn_to_u64(vport->fc_nodename.u.wwn);
2145 nfcp_info.port_name = wwn_to_u64(vport->fc_portname.u.wwn);
2146
4d4c4a4a
JS		 2147 /* Limit to LPFC_MAX_NVME_SEG_CNT.
2148 * For now need + 1 to get around NVME transport logic.
2149 */
2150 if (phba->cfg_sg_seg_cnt > LPFC_MAX_NVME_SEG_CNT) {
2151 lpfc_printf_vlog(vport, KERN_INFO, LOG_NVME | LOG_INIT,
2152 "6300 Reducing sg segment cnt to %d\n",
2153 LPFC_MAX_NVME_SEG_CNT);
2154 phba->cfg_nvme_seg_cnt = LPFC_MAX_NVME_SEG_CNT;
2155 } else {
2156 phba->cfg_nvme_seg_cnt = phba->cfg_sg_seg_cnt;
2157 }
2158 lpfc_nvme_template.max_sgl_segments = phba->cfg_nvme_seg_cnt + 1;
01649561
JS		 2159 lpfc_nvme_template.max_hw_queues = phba->cfg_nvme_io_channel;
2160
2161 /* localport is allocated from the stack, but the registration
2162 * call allocates heap memory as well as the private area.
2163 */
7d708033 2164#if (IS_ENABLED(CONFIG_NVME_FC))
01649561
JS		 2165 ret = nvme_fc_register_localport(&nfcp_info, &lpfc_nvme_template,
2166 &vport->phba->pcidev->dev, &localport);
166d7211
JS		 2167#else
2168 ret = -ENOMEM;
2169#endif
01649561
JS		 2170 if (!ret) {
2171 lpfc_printf_vlog(vport, KERN_INFO, LOG_NVME | LOG_NVME_DISC,
2172 "6005 Successfully registered local "
2173 "NVME port num %d, localP %p, private %p, "
2174 "sg_seg %d\n",
2175 localport->port_num, localport,
2176 localport->private,
2177 lpfc_nvme_template.max_sgl_segments);
2178
2179 /* Private is our lport size declared in the template. */
2180 lport = (struct lpfc_nvme_lport *)localport->private;
2181 vport->localport = localport;
2182 lport->vport = vport;
01649561 2183 vport->nvmei_support = 1;
6b486ce9
DK		 2184
2185 /* Don't post more new bufs if repost already recovered
2186 * the nvme sgls.
2187 */
2188 if (phba->sli4_hba.nvme_xri_cnt == 0) {
2189 len = lpfc_new_nvme_buf(vport,
2190 phba->sli4_hba.nvme_xri_max);
2191 vport->phba->total_nvme_bufs += len;
2192 }
01649561
JS		 2193 }
2194
01649561
JS		 2195 return ret;
2196}
2197
2198/**
2199 * lpfc_nvme_destroy_localport - Destroy lpfc_nvme bound to nvme transport.
2200 * @pnvme: pointer to lpfc nvme data structure.
2201 *
2202 * This routine is invoked to destroy all lports bound to the phba.
2203 * The lport memory was allocated by the nvme fc transport and is
2204 * released there. This routine ensures all rports bound to the
2205 * lport have been disconnected.
2206 *
2207 **/
2208void
2209lpfc_nvme_destroy_localport(struct lpfc_vport *vport)
2210{
7d708033 2211#if (IS_ENABLED(CONFIG_NVME_FC))
01649561
JS		 2212 struct nvme_fc_local_port *localport;
2213 struct lpfc_nvme_lport *lport;
01649561
JS		 2214 int ret;
2215
2216 if (vport->nvmei_support == 0)
2217 return;
2218
2219 localport = vport->localport;
2220 vport->localport = NULL;
2221 lport = (struct lpfc_nvme_lport *)localport->private;
2222
2223 lpfc_printf_vlog(vport, KERN_INFO, LOG_NVME,
2224 "6011 Destroying NVME localport %p\n",
2225 localport);
166d7211 2226
01649561
JS		 2227 /* lport's rport list is clear. Unregister
2228 * lport and release resources.
2229 */
2230 init_completion(&lport->lport_unreg_done);
2231 ret = nvme_fc_unregister_localport(localport);
2232 wait_for_completion_timeout(&lport->lport_unreg_done, 5);
2233
2234 /* Regardless of the unregister upcall response, clear
2235 * nvmei_support. All rports are unregistered and the
2236 * driver will clean up.
2237 */
2238 vport->nvmei_support = 0;
2239 if (ret == 0) {
2240 lpfc_printf_vlog(vport,
2241 KERN_INFO, LOG_NVME_DISC,
2242 "6009 Unregistered lport Success\n");
2243 } else {
2244 lpfc_printf_vlog(vport,
2245 KERN_INFO, LOG_NVME_DISC,
2246 "6010 Unregistered lport "
2247 "Failed, status x%x\n",
2248 ret);
2249 }
166d7211 2250#endif
01649561
JS		 2251}
2252
2253void
2254lpfc_nvme_update_localport(struct lpfc_vport *vport)
2255{
4410a67a 2256#if (IS_ENABLED(CONFIG_NVME_FC))
01649561
JS		 2257 struct nvme_fc_local_port *localport;
2258 struct lpfc_nvme_lport *lport;
2259
2260 localport = vport->localport;
4410a67a
JS		 2261 if (!localport) {
2262 lpfc_printf_vlog(vport, KERN_WARNING, LOG_NVME,
2263 "6710 Update NVME fail. No localport\n");
2264 return;
2265 }
01649561 2266 lport = (struct lpfc_nvme_lport *)localport->private;
4410a67a
JS		 2267 if (!lport) {
2268 lpfc_printf_vlog(vport, KERN_WARNING, LOG_NVME,
2269 "6171 Update NVME fail. localP %p, No lport\n",
2270 localport);
2271 return;
2272 }
01649561
JS		 2273 lpfc_printf_vlog(vport, KERN_INFO, LOG_NVME,
2274 "6012 Update NVME lport %p did x%x\n",
2275 localport, vport->fc_myDID);
2276
2277 localport->port_id = vport->fc_myDID;
2278 if (localport->port_id == 0)
2279 localport->port_role = FC_PORT_ROLE_NVME_DISCOVERY;
2280 else
2281 localport->port_role = FC_PORT_ROLE_NVME_INITIATOR;
2282
2283 lpfc_printf_vlog(vport, KERN_INFO, LOG_NVME_DISC,
2284 "6030 bound lport %p to DID x%06x\n",
2285 lport, localport->port_id);
4410a67a 2286#endif
01649561
JS		 2287}
2288
2289int
2290lpfc_nvme_register_port(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp)
2291{
7d708033 2292#if (IS_ENABLED(CONFIG_NVME_FC))
01649561
JS		 2293 int ret = 0;
2294 struct nvme_fc_local_port *localport;
2295 struct lpfc_nvme_lport *lport;
2296 struct lpfc_nvme_rport *rport;
2297 struct nvme_fc_remote_port *remote_port;
2298 struct nvme_fc_port_info rpinfo;
2299
2300 lpfc_printf_vlog(ndlp->vport, KERN_INFO, LOG_NVME_DISC,
2301 "6006 Register NVME PORT. DID x%06x nlptype x%x\n",
2302 ndlp->nlp_DID, ndlp->nlp_type);
2303
2304 localport = vport->localport;
bb6a8a2c
DK		 2305 if (!localport)
2306 return 0;
2307
01649561
JS		 2308 lport = (struct lpfc_nvme_lport *)localport->private;
2309
7a06dcd3
JS		 2310 /* NVME rports are not preserved across devloss.
2311 * Just register this instance. Note, rpinfo->dev_loss_tmo
2312 * is left 0 to indicate accept transport defaults. The
2313 * driver communicates port role capabilities consistent
2314 * with the PRLI response data.
2315 */
2316 memset(&rpinfo, 0, sizeof(struct nvme_fc_port_info));
2317 rpinfo.port_id = ndlp->nlp_DID;
2318 if (ndlp->nlp_type & NLP_NVME_TARGET)
2319 rpinfo.port_role |= FC_PORT_ROLE_NVME_TARGET;
2320 if (ndlp->nlp_type & NLP_NVME_INITIATOR)
2321 rpinfo.port_role |= FC_PORT_ROLE_NVME_INITIATOR;
2322
2323 if (ndlp->nlp_type & NLP_NVME_DISCOVERY)
2324 rpinfo.port_role |= FC_PORT_ROLE_NVME_DISCOVERY;
2325
2326 rpinfo.port_name = wwn_to_u64(ndlp->nlp_portname.u.wwn);
2327 rpinfo.node_name = wwn_to_u64(ndlp->nlp_nodename.u.wwn);
2328 ret = nvme_fc_register_remoteport(localport, &rpinfo, &remote_port);
2329 if (!ret) {
2330 /* If the ndlp already has an nrport, this is just
2331 * a resume of the existing rport. Else this is a
2332 * new rport.
01649561 2333 */
7a06dcd3
JS		 2334 rport = remote_port->private;
2335 if (ndlp->nrport == rport) {
2336 lpfc_printf_vlog(ndlp->vport, KERN_INFO,
2337 LOG_NVME_DISC,
2338 "6014 Rebinding lport to "
2339 "rport wwpn 0x%llx, "
2340 "Data: x%x x%x x%x x%06x\n",
2341 remote_port->port_name,
2342 remote_port->port_id,
2343 remote_port->port_role,
01649561
JS		 2344 ndlp->nlp_type,
2345 ndlp->nlp_DID);
7a06dcd3
JS		 2346 } else {
2347 /* New rport. */
01649561
JS		 2348 rport->remoteport = remote_port;
2349 rport->lport = lport;
2350 rport->ndlp = lpfc_nlp_get(ndlp);
2351 if (!rport->ndlp)
2352 return -1;
2353 ndlp->nrport = rport;
01649561
JS		 2354 lpfc_printf_vlog(vport, KERN_INFO,
2355 LOG_NVME_DISC | LOG_NODE,
7a06dcd3
JS		 2356 "6022 Binding new rport to "
2357 "lport %p Rport WWNN 0x%llx, "
2358 "Rport WWPN 0x%llx DID "
2359 "x%06x Role x%x\n",
01649561
JS		 2360 lport,
2361 rpinfo.node_name, rpinfo.port_name,
2362 rpinfo.port_id, rpinfo.port_role);
01649561
JS		 2363 }
2364 } else {
7a06dcd3
JS		 2365 lpfc_printf_vlog(vport, KERN_ERR,
2366 LOG_NVME_DISC | LOG_NODE,
2367 "6031 RemotePort Registration failed "
2368 "err: %d, DID x%06x\n",
2369 ret, ndlp->nlp_DID);
01649561 2370 }
7a06dcd3 2371
01649561 2372 return ret;
166d7211
JS		 2373#else
2374 return 0;
2375#endif
01649561
JS		 2376}
2377
2378/* lpfc_nvme_unregister_port - unbind the DID and port_role from this rport.
2379 *
2380 * There is no notion of Devloss or rport recovery from the current
2381 * nvme_transport perspective. Loss of an rport just means IO cannot
2382 * be sent and recovery is completely up to the initator.
2383 * For now, the driver just unbinds the DID and port_role so that
2384 * no further IO can be issued. Changes are planned for later.
2385 *
2386 * Notes - the ndlp reference count is not decremented here since
2387 * since there is no nvme_transport api for devloss. Node ref count
2388 * is only adjusted in driver unload.
2389 */
2390void
2391lpfc_nvme_unregister_port(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp)
2392{
7d708033 2393#if (IS_ENABLED(CONFIG_NVME_FC))
01649561
JS		 2394 int ret;
2395 struct nvme_fc_local_port *localport;
2396 struct lpfc_nvme_lport *lport;
2397 struct lpfc_nvme_rport *rport;
2398 struct nvme_fc_remote_port *remoteport;
2399
2400 localport = vport->localport;
2401
2402 /* This is fundamental error. The localport is always
2403 * available until driver unload. Just exit.
2404 */
2405 if (!localport)
2406 return;
2407
2408 lport = (struct lpfc_nvme_lport *)localport->private;
2409 if (!lport)
2410 goto input_err;
2411
2412 rport = ndlp->nrport;
2413 if (!rport)
2414 goto input_err;
2415
2416 remoteport = rport->remoteport;
2417 lpfc_printf_vlog(vport, KERN_INFO, LOG_NVME_DISC,
2418 "6033 Unreg nvme remoteport %p, portname x%llx, "
2419 "port_id x%06x, portstate x%x port type x%x\n",
2420 remoteport, remoteport->port_name,
2421 remoteport->port_id, remoteport->port_state,
2422 ndlp->nlp_type);
2423
2424 /* Sanity check ndlp type. Only call for NVME ports. Don't
2425 * clear any rport state until the transport calls back.
2426 */
2427 if (ndlp->nlp_type & (NLP_NVME_TARGET | NLP_NVME_INITIATOR)) {
2428 init_completion(&rport->rport_unreg_done);
7a06dcd3
JS		 2429
2430 /* No concern about the role change on the nvme remoteport.
2431 * The transport will update it.
2432 */
01649561
JS		 2433 ret = nvme_fc_unregister_remoteport(remoteport);
2434 if (ret != 0) {
2435 lpfc_printf_vlog(vport, KERN_ERR, LOG_NVME_DISC,
2436 "6167 NVME unregister failed %d "
2437 "port_state x%x\n",
2438 ret, remoteport->port_state);
2439 }
2440
01649561
JS		 2441 }
2442 return;
2443
2444 input_err:
166d7211 2445#endif
01649561 2446 lpfc_printf_vlog(vport, KERN_ERR, LOG_NVME_DISC,
2b7824d0 2447 "6168 State error: lport %p, rport%p FCID x%06x\n",
01649561
JS		 2448 vport->localport, ndlp->rport, ndlp->nlp_DID);
2449}
318083ad
JS		 2450
2451/**
2452 * lpfc_sli4_nvme_xri_aborted - Fast-path process of NVME xri abort
2453 * @phba: pointer to lpfc hba data structure.
2454 * @axri: pointer to the fcp xri abort wcqe structure.
2455 *
2456 * This routine is invoked by the worker thread to process a SLI4 fast-path
2457 * FCP aborted xri.
2458 **/
2459void
2460lpfc_sli4_nvme_xri_aborted(struct lpfc_hba *phba,
2461 struct sli4_wcqe_xri_aborted *axri)
2462{
2463 uint16_t xri = bf_get(lpfc_wcqe_xa_xri, axri);
2464 uint16_t rxid = bf_get(lpfc_wcqe_xa_remote_xid, axri);
2465 struct lpfc_nvme_buf *lpfc_ncmd, *next_lpfc_ncmd;
2466 struct lpfc_nodelist *ndlp;
2467 unsigned long iflag = 0;
2468 int rrq_empty = 0;
2469
2470 if (!(phba->cfg_enable_fc4_type & LPFC_ENABLE_NVME))
2471 return;
2472 spin_lock_irqsave(&phba->hbalock, iflag);
2473 spin_lock(&phba->sli4_hba.abts_nvme_buf_list_lock);
2474 list_for_each_entry_safe(lpfc_ncmd, next_lpfc_ncmd,
2475 &phba->sli4_hba.lpfc_abts_nvme_buf_list,
2476 list) {
2477 if (lpfc_ncmd->cur_iocbq.sli4_xritag == xri) {
bbe3012b 2478 list_del_init(&lpfc_ncmd->list);
318083ad
JS		 2479 lpfc_ncmd->flags &= ~LPFC_SBUF_XBUSY;
2480 lpfc_ncmd->status = IOSTAT_SUCCESS;
2481 spin_unlock(
2482 &phba->sli4_hba.abts_nvme_buf_list_lock);
2483
2484 rrq_empty = list_empty(&phba->active_rrq_list);
2485 spin_unlock_irqrestore(&phba->hbalock, iflag);
2486 ndlp = lpfc_ncmd->ndlp;
2487 if (ndlp) {
2488 lpfc_set_rrq_active(
2489 phba, ndlp,
2490 lpfc_ncmd->cur_iocbq.sli4_lxritag,
2491 rxid, 1);
2492 lpfc_sli4_abts_err_handler(phba, ndlp, axri);
2493 }
86c67379
JS		 2494
2495 lpfc_printf_log(phba, KERN_INFO, LOG_NVME_ABTS,
2496 "6311 XRI Aborted xri x%x tag x%x "
2497 "released\n",
2498 xri, lpfc_ncmd->cur_iocbq.iotag);
2499
318083ad
JS		 2500 lpfc_release_nvme_buf(phba, lpfc_ncmd);
2501 if (rrq_empty)
2502 lpfc_worker_wake_up(phba);
2503 return;
2504 }
2505 }
2506 spin_unlock(&phba->sli4_hba.abts_nvme_buf_list_lock);
2507 spin_unlock_irqrestore(&phba->hbalock, iflag);
86c67379
JS		 2508
2509 lpfc_printf_log(phba, KERN_INFO, LOG_NVME_ABTS,
2510 "6312 XRI Aborted xri x%x not found\n", xri);
2511
318083ad 2512}
Linux 6.x block layer and io_uring tree(s)