Merge tag 'scsi-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/jejb/scsi
[muen/linux.git] / drivers / scsi / lpfc / lpfc_nvmet.c
1 /*******************************************************************
2  * This file is part of the Emulex Linux Device Driver for         *
3  * Fibre Channsel Host Bus Adapters.                               *
4  * Copyright (C) 2017 Broadcom. All Rights Reserved. The term      *
5  * “Broadcom” refers to Broadcom Limited and/or its subsidiaries.  *
6  * Copyright (C) 2004-2016 Emulex.  All rights reserved.           *
7  * EMULEX and SLI are trademarks of Emulex.                        *
8  * www.broadcom.com                                                *
9  * Portions Copyright (C) 2004-2005 Christoph Hellwig              *
10  *                                                                 *
11  * This program is free software; you can redistribute it and/or   *
12  * modify it under the terms of version 2 of the GNU General       *
13  * Public License as published by the Free Software Foundation.    *
14  * This program is distributed in the hope that it will be useful. *
15  * ALL EXPRESS OR IMPLIED CONDITIONS, REPRESENTATIONS AND          *
16  * WARRANTIES, INCLUDING ANY IMPLIED WARRANTY OF MERCHANTABILITY,  *
17  * FITNESS FOR A PARTICULAR PURPOSE, OR NON-INFRINGEMENT, ARE      *
18  * DISCLAIMED, EXCEPT TO THE EXTENT THAT SUCH DISCLAIMERS ARE HELD *
19  * TO BE LEGALLY INVALID.  See the GNU General Public License for  *
20  * more details, a copy of which can be found in the file COPYING  *
21  * included with this package.                                     *
22  ********************************************************************/
23 #include <linux/pci.h>
24 #include <linux/slab.h>
25 #include <linux/interrupt.h>
26 #include <linux/delay.h>
27 #include <asm/unaligned.h>
28 #include <linux/crc-t10dif.h>
29 #include <net/checksum.h>
30
31 #include <scsi/scsi.h>
32 #include <scsi/scsi_device.h>
33 #include <scsi/scsi_eh.h>
34 #include <scsi/scsi_host.h>
35 #include <scsi/scsi_tcq.h>
36 #include <scsi/scsi_transport_fc.h>
37 #include <scsi/fc/fc_fs.h>
38
39 #include <../drivers/nvme/host/nvme.h>
40 #include <linux/nvme-fc-driver.h>
41
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_scsi.h"
51 #include "lpfc_nvme.h"
52 #include "lpfc_nvmet.h"
53 #include "lpfc_logmsg.h"
54 #include "lpfc_crtn.h"
55 #include "lpfc_vport.h"
56 #include "lpfc_debugfs.h"
57
58 static struct lpfc_iocbq *lpfc_nvmet_prep_ls_wqe(struct lpfc_hba *,
59                                                  struct lpfc_nvmet_rcv_ctx *,
60                                                  dma_addr_t rspbuf,
61                                                  uint16_t rspsize);
62 static struct lpfc_iocbq *lpfc_nvmet_prep_fcp_wqe(struct lpfc_hba *,
63                                                   struct lpfc_nvmet_rcv_ctx *);
64 static int lpfc_nvmet_sol_fcp_issue_abort(struct lpfc_hba *,
65                                           struct lpfc_nvmet_rcv_ctx *,
66                                           uint32_t, uint16_t);
67 static int lpfc_nvmet_unsol_fcp_issue_abort(struct lpfc_hba *,
68                                             struct lpfc_nvmet_rcv_ctx *,
69                                             uint32_t, uint16_t);
70 static int lpfc_nvmet_unsol_ls_issue_abort(struct lpfc_hba *,
71                                            struct lpfc_nvmet_rcv_ctx *,
72                                            uint32_t, uint16_t);
73
74 void
75 lpfc_nvmet_defer_release(struct lpfc_hba *phba, struct lpfc_nvmet_rcv_ctx *ctxp)
76 {
77         unsigned long iflag;
78
79         lpfc_printf_log(phba, KERN_ERR, LOG_NVME_ABTS,
80                         "6313 NVMET Defer ctx release xri x%x flg x%x\n",
81                         ctxp->oxid, ctxp->flag);
82
83         spin_lock_irqsave(&phba->sli4_hba.abts_nvme_buf_list_lock, iflag);
84         if (ctxp->flag & LPFC_NVMET_CTX_RLS) {
85                 spin_unlock_irqrestore(&phba->sli4_hba.abts_nvme_buf_list_lock,
86                                        iflag);
87                 return;
88         }
89         ctxp->flag |= LPFC_NVMET_CTX_RLS;
90         list_add_tail(&ctxp->list, &phba->sli4_hba.lpfc_abts_nvmet_ctx_list);
91         spin_unlock_irqrestore(&phba->sli4_hba.abts_nvme_buf_list_lock, iflag);
92 }
93
94 /**
95  * lpfc_nvmet_xmt_ls_rsp_cmp - Completion handler for LS Response
96  * @phba: Pointer to HBA context object.
97  * @cmdwqe: Pointer to driver command WQE object.
98  * @wcqe: Pointer to driver response CQE object.
99  *
100  * The function is called from SLI ring event handler with no
101  * lock held. This function is the completion handler for NVME LS commands
102  * The function frees memory resources used for the NVME commands.
103  **/
104 static void
105 lpfc_nvmet_xmt_ls_rsp_cmp(struct lpfc_hba *phba, struct lpfc_iocbq *cmdwqe,
106                           struct lpfc_wcqe_complete *wcqe)
107 {
108         struct lpfc_nvmet_tgtport *tgtp;
109         struct nvmefc_tgt_ls_req *rsp;
110         struct lpfc_nvmet_rcv_ctx *ctxp;
111         uint32_t status, result;
112
113         status = bf_get(lpfc_wcqe_c_status, wcqe);
114         result = wcqe->parameter;
115         if (!phba->targetport)
116                 goto out;
117
118         tgtp = (struct lpfc_nvmet_tgtport *)phba->targetport->private;
119
120         if (status)
121                 atomic_inc(&tgtp->xmt_ls_rsp_error);
122         else
123                 atomic_inc(&tgtp->xmt_ls_rsp_cmpl);
124
125 out:
126         ctxp = cmdwqe->context2;
127         rsp = &ctxp->ctx.ls_req;
128
129         lpfc_nvmeio_data(phba, "NVMET LS  CMPL: xri x%x stat x%x result x%x\n",
130                          ctxp->oxid, status, result);
131
132         lpfc_printf_log(phba, KERN_INFO, LOG_NVME_DISC,
133                         "6038 %s: Entrypoint: ctx %p status %x/%x\n", __func__,
134                         ctxp, status, result);
135
136         lpfc_nlp_put(cmdwqe->context1);
137         cmdwqe->context2 = NULL;
138         cmdwqe->context3 = NULL;
139         lpfc_sli_release_iocbq(phba, cmdwqe);
140         rsp->done(rsp);
141         kfree(ctxp);
142 }
143
144 /**
145  * lpfc_nvmet_ctxbuf_post - Repost a NVMET RQ DMA buffer and clean up context
146  * @phba: HBA buffer is associated with
147  * @ctxp: context to clean up
148  * @mp: Buffer to free
149  *
150  * Description: Frees the given DMA buffer in the appropriate way given by
151  * reposting it to its associated RQ so it can be reused.
152  *
153  * Notes: Takes phba->hbalock.  Can be called with or without other locks held.
154  *
155  * Returns: None
156  **/
157 void
158 lpfc_nvmet_ctxbuf_post(struct lpfc_hba *phba, struct lpfc_nvmet_ctxbuf *ctx_buf)
159 {
160 #if (IS_ENABLED(CONFIG_NVME_TARGET_FC))
161         struct lpfc_nvmet_rcv_ctx *ctxp = ctx_buf->context;
162         struct lpfc_nvmet_tgtport *tgtp;
163         struct fc_frame_header *fc_hdr;
164         struct rqb_dmabuf *nvmebuf;
165         struct lpfc_dmabuf *hbufp;
166         uint32_t *payload;
167         uint32_t size, oxid, sid, rc;
168         unsigned long iflag;
169
170         if (ctxp->txrdy) {
171                 pci_pool_free(phba->txrdy_payload_pool, ctxp->txrdy,
172                               ctxp->txrdy_phys);
173                 ctxp->txrdy = NULL;
174                 ctxp->txrdy_phys = 0;
175         }
176         ctxp->state = LPFC_NVMET_STE_FREE;
177
178         spin_lock_irqsave(&phba->sli4_hba.nvmet_io_wait_lock, iflag);
179         if (phba->sli4_hba.nvmet_io_wait_cnt) {
180                 hbufp = &nvmebuf->hbuf;
181                 list_remove_head(&phba->sli4_hba.lpfc_nvmet_io_wait_list,
182                                  nvmebuf, struct rqb_dmabuf,
183                                  hbuf.list);
184                 phba->sli4_hba.nvmet_io_wait_cnt--;
185                 spin_unlock_irqrestore(&phba->sli4_hba.nvmet_io_wait_lock,
186                                        iflag);
187
188                 fc_hdr = (struct fc_frame_header *)(nvmebuf->hbuf.virt);
189                 oxid = be16_to_cpu(fc_hdr->fh_ox_id);
190                 tgtp = (struct lpfc_nvmet_tgtport *)phba->targetport->private;
191                 payload = (uint32_t *)(nvmebuf->dbuf.virt);
192                 size = nvmebuf->bytes_recv;
193                 sid = sli4_sid_from_fc_hdr(fc_hdr);
194
195                 ctxp = (struct lpfc_nvmet_rcv_ctx *)ctx_buf->context;
196                 memset(ctxp, 0, sizeof(ctxp->ctx));
197                 ctxp->wqeq = NULL;
198                 ctxp->txrdy = NULL;
199                 ctxp->offset = 0;
200                 ctxp->phba = phba;
201                 ctxp->size = size;
202                 ctxp->oxid = oxid;
203                 ctxp->sid = sid;
204                 ctxp->state = LPFC_NVMET_STE_RCV;
205                 ctxp->entry_cnt = 1;
206                 ctxp->flag = 0;
207                 ctxp->ctxbuf = ctx_buf;
208                 spin_lock_init(&ctxp->ctxlock);
209
210 #ifdef CONFIG_SCSI_LPFC_DEBUG_FS
211                 if (phba->ktime_on) {
212                         ctxp->ts_cmd_nvme = ktime_get_ns();
213                         ctxp->ts_isr_cmd = ctxp->ts_cmd_nvme;
214                         ctxp->ts_nvme_data = 0;
215                         ctxp->ts_data_wqput = 0;
216                         ctxp->ts_isr_data = 0;
217                         ctxp->ts_data_nvme = 0;
218                         ctxp->ts_nvme_status = 0;
219                         ctxp->ts_status_wqput = 0;
220                         ctxp->ts_isr_status = 0;
221                         ctxp->ts_status_nvme = 0;
222                 }
223 #endif
224                 atomic_inc(&tgtp->rcv_fcp_cmd_in);
225                 /*
226                  * The calling sequence should be:
227                  * nvmet_fc_rcv_fcp_req->lpfc_nvmet_xmt_fcp_op/cmp- req->done
228                  * lpfc_nvmet_xmt_fcp_op_cmp should free the allocated ctxp.
229                  * When we return from nvmet_fc_rcv_fcp_req, all relevant info
230                  * the NVME command / FC header is stored.
231                  * A buffer has already been reposted for this IO, so just free
232                  * the nvmebuf.
233                  */
234                 rc = nvmet_fc_rcv_fcp_req(phba->targetport, &ctxp->ctx.fcp_req,
235                                           payload, size);
236
237                 /* Process FCP command */
238                 if (rc == 0) {
239                         atomic_inc(&tgtp->rcv_fcp_cmd_out);
240                         nvmebuf->hrq->rqbp->rqb_free_buffer(phba, nvmebuf);
241                         return;
242                 }
243
244                 atomic_inc(&tgtp->rcv_fcp_cmd_drop);
245                 lpfc_printf_log(phba, KERN_ERR, LOG_NVME_IOERR,
246                                 "2582 FCP Drop IO x%x: err x%x: x%x x%x x%x\n",
247                                 ctxp->oxid, rc,
248                                 atomic_read(&tgtp->rcv_fcp_cmd_in),
249                                 atomic_read(&tgtp->rcv_fcp_cmd_out),
250                                 atomic_read(&tgtp->xmt_fcp_release));
251
252                 lpfc_nvmet_defer_release(phba, ctxp);
253                 lpfc_nvmet_unsol_fcp_issue_abort(phba, ctxp, sid, oxid);
254                 nvmebuf->hrq->rqbp->rqb_free_buffer(phba, nvmebuf);
255                 return;
256         }
257         spin_unlock_irqrestore(&phba->sli4_hba.nvmet_io_wait_lock, iflag);
258
259         spin_lock_irqsave(&phba->sli4_hba.nvmet_io_lock, iflag);
260         list_add_tail(&ctx_buf->list,
261                       &phba->sli4_hba.lpfc_nvmet_ctx_list);
262         phba->sli4_hba.nvmet_ctx_cnt++;
263         spin_unlock_irqrestore(&phba->sli4_hba.nvmet_io_lock, iflag);
264 #endif
265 }
266
267 #ifdef CONFIG_SCSI_LPFC_DEBUG_FS
268 static void
269 lpfc_nvmet_ktime(struct lpfc_hba *phba,
270                  struct lpfc_nvmet_rcv_ctx *ctxp)
271 {
272         uint64_t seg1, seg2, seg3, seg4, seg5;
273         uint64_t seg6, seg7, seg8, seg9, seg10;
274
275         if (!phba->ktime_on)
276                 return;
277
278         if (!ctxp->ts_isr_cmd || !ctxp->ts_cmd_nvme ||
279             !ctxp->ts_nvme_data || !ctxp->ts_data_wqput ||
280             !ctxp->ts_isr_data || !ctxp->ts_data_nvme ||
281             !ctxp->ts_nvme_status || !ctxp->ts_status_wqput ||
282             !ctxp->ts_isr_status || !ctxp->ts_status_nvme)
283                 return;
284
285         if (ctxp->ts_isr_cmd  > ctxp->ts_cmd_nvme)
286                 return;
287         if (ctxp->ts_cmd_nvme > ctxp->ts_nvme_data)
288                 return;
289         if (ctxp->ts_nvme_data > ctxp->ts_data_wqput)
290                 return;
291         if (ctxp->ts_data_wqput > ctxp->ts_isr_data)
292                 return;
293         if (ctxp->ts_isr_data > ctxp->ts_data_nvme)
294                 return;
295         if (ctxp->ts_data_nvme > ctxp->ts_nvme_status)
296                 return;
297         if (ctxp->ts_nvme_status > ctxp->ts_status_wqput)
298                 return;
299         if (ctxp->ts_status_wqput > ctxp->ts_isr_status)
300                 return;
301         if (ctxp->ts_isr_status > ctxp->ts_status_nvme)
302                 return;
303         /*
304          * Segment 1 - Time from FCP command received by MSI-X ISR
305          * to FCP command is passed to NVME Layer.
306          * Segment 2 - Time from FCP command payload handed
307          * off to NVME Layer to Driver receives a Command op
308          * from NVME Layer.
309          * Segment 3 - Time from Driver receives a Command op
310          * from NVME Layer to Command is put on WQ.
311          * Segment 4 - Time from Driver WQ put is done
312          * to MSI-X ISR for Command cmpl.
313          * Segment 5 - Time from MSI-X ISR for Command cmpl to
314          * Command cmpl is passed to NVME Layer.
315          * Segment 6 - Time from Command cmpl is passed to NVME
316          * Layer to Driver receives a RSP op from NVME Layer.
317          * Segment 7 - Time from Driver receives a RSP op from
318          * NVME Layer to WQ put is done on TRSP FCP Status.
319          * Segment 8 - Time from Driver WQ put is done on TRSP
320          * FCP Status to MSI-X ISR for TRSP cmpl.
321          * Segment 9 - Time from MSI-X ISR for TRSP cmpl to
322          * TRSP cmpl is passed to NVME Layer.
323          * Segment 10 - Time from FCP command received by
324          * MSI-X ISR to command is completed on wire.
325          * (Segments 1 thru 8) for READDATA / WRITEDATA
326          * (Segments 1 thru 4) for READDATA_RSP
327          */
328         seg1 = ctxp->ts_cmd_nvme - ctxp->ts_isr_cmd;
329         seg2 = (ctxp->ts_nvme_data - ctxp->ts_isr_cmd) - seg1;
330         seg3 = (ctxp->ts_data_wqput - ctxp->ts_isr_cmd) -
331                 seg1 - seg2;
332         seg4 = (ctxp->ts_isr_data - ctxp->ts_isr_cmd) -
333                 seg1 - seg2 - seg3;
334         seg5 = (ctxp->ts_data_nvme - ctxp->ts_isr_cmd) -
335                 seg1 - seg2 - seg3 - seg4;
336
337         /* For auto rsp commands seg6 thru seg10 will be 0 */
338         if (ctxp->ts_nvme_status > ctxp->ts_data_nvme) {
339                 seg6 = (ctxp->ts_nvme_status -
340                         ctxp->ts_isr_cmd) -
341                         seg1 - seg2 - seg3 - seg4 - seg5;
342                 seg7 = (ctxp->ts_status_wqput -
343                         ctxp->ts_isr_cmd) -
344                         seg1 - seg2 - seg3 -
345                         seg4 - seg5 - seg6;
346                 seg8 = (ctxp->ts_isr_status -
347                         ctxp->ts_isr_cmd) -
348                         seg1 - seg2 - seg3 - seg4 -
349                         seg5 - seg6 - seg7;
350                 seg9 = (ctxp->ts_status_nvme -
351                         ctxp->ts_isr_cmd) -
352                         seg1 - seg2 - seg3 - seg4 -
353                         seg5 - seg6 - seg7 - seg8;
354                 seg10 = (ctxp->ts_isr_status -
355                         ctxp->ts_isr_cmd);
356         } else {
357                 seg6 =  0;
358                 seg7 =  0;
359                 seg8 =  0;
360                 seg9 =  0;
361                 seg10 = (ctxp->ts_isr_data - ctxp->ts_isr_cmd);
362         }
363
364         phba->ktime_seg1_total += seg1;
365         if (seg1 < phba->ktime_seg1_min)
366                 phba->ktime_seg1_min = seg1;
367         else if (seg1 > phba->ktime_seg1_max)
368                 phba->ktime_seg1_max = seg1;
369
370         phba->ktime_seg2_total += seg2;
371         if (seg2 < phba->ktime_seg2_min)
372                 phba->ktime_seg2_min = seg2;
373         else if (seg2 > phba->ktime_seg2_max)
374                 phba->ktime_seg2_max = seg2;
375
376         phba->ktime_seg3_total += seg3;
377         if (seg3 < phba->ktime_seg3_min)
378                 phba->ktime_seg3_min = seg3;
379         else if (seg3 > phba->ktime_seg3_max)
380                 phba->ktime_seg3_max = seg3;
381
382         phba->ktime_seg4_total += seg4;
383         if (seg4 < phba->ktime_seg4_min)
384                 phba->ktime_seg4_min = seg4;
385         else if (seg4 > phba->ktime_seg4_max)
386                 phba->ktime_seg4_max = seg4;
387
388         phba->ktime_seg5_total += seg5;
389         if (seg5 < phba->ktime_seg5_min)
390                 phba->ktime_seg5_min = seg5;
391         else if (seg5 > phba->ktime_seg5_max)
392                 phba->ktime_seg5_max = seg5;
393
394         phba->ktime_data_samples++;
395         if (!seg6)
396                 goto out;
397
398         phba->ktime_seg6_total += seg6;
399         if (seg6 < phba->ktime_seg6_min)
400                 phba->ktime_seg6_min = seg6;
401         else if (seg6 > phba->ktime_seg6_max)
402                 phba->ktime_seg6_max = seg6;
403
404         phba->ktime_seg7_total += seg7;
405         if (seg7 < phba->ktime_seg7_min)
406                 phba->ktime_seg7_min = seg7;
407         else if (seg7 > phba->ktime_seg7_max)
408                 phba->ktime_seg7_max = seg7;
409
410         phba->ktime_seg8_total += seg8;
411         if (seg8 < phba->ktime_seg8_min)
412                 phba->ktime_seg8_min = seg8;
413         else if (seg8 > phba->ktime_seg8_max)
414                 phba->ktime_seg8_max = seg8;
415
416         phba->ktime_seg9_total += seg9;
417         if (seg9 < phba->ktime_seg9_min)
418                 phba->ktime_seg9_min = seg9;
419         else if (seg9 > phba->ktime_seg9_max)
420                 phba->ktime_seg9_max = seg9;
421 out:
422         phba->ktime_seg10_total += seg10;
423         if (seg10 < phba->ktime_seg10_min)
424                 phba->ktime_seg10_min = seg10;
425         else if (seg10 > phba->ktime_seg10_max)
426                 phba->ktime_seg10_max = seg10;
427         phba->ktime_status_samples++;
428 }
429 #endif
430
431 /**
432  * lpfc_nvmet_xmt_fcp_op_cmp - Completion handler for FCP Response
433  * @phba: Pointer to HBA context object.
434  * @cmdwqe: Pointer to driver command WQE object.
435  * @wcqe: Pointer to driver response CQE object.
436  *
437  * The function is called from SLI ring event handler with no
438  * lock held. This function is the completion handler for NVME FCP commands
439  * The function frees memory resources used for the NVME commands.
440  **/
441 static void
442 lpfc_nvmet_xmt_fcp_op_cmp(struct lpfc_hba *phba, struct lpfc_iocbq *cmdwqe,
443                           struct lpfc_wcqe_complete *wcqe)
444 {
445         struct lpfc_nvmet_tgtport *tgtp;
446         struct nvmefc_tgt_fcp_req *rsp;
447         struct lpfc_nvmet_rcv_ctx *ctxp;
448         uint32_t status, result, op, start_clean;
449 #ifdef CONFIG_SCSI_LPFC_DEBUG_FS
450         uint32_t id;
451 #endif
452
453         ctxp = cmdwqe->context2;
454         ctxp->flag &= ~LPFC_NVMET_IO_INP;
455
456         rsp = &ctxp->ctx.fcp_req;
457         op = rsp->op;
458
459         status = bf_get(lpfc_wcqe_c_status, wcqe);
460         result = wcqe->parameter;
461
462         if (phba->targetport)
463                 tgtp = (struct lpfc_nvmet_tgtport *)phba->targetport->private;
464         else
465                 tgtp = NULL;
466
467         lpfc_nvmeio_data(phba, "NVMET FCP CMPL: xri x%x op x%x status x%x\n",
468                          ctxp->oxid, op, status);
469
470         if (status) {
471                 rsp->fcp_error = NVME_SC_DATA_XFER_ERROR;
472                 rsp->transferred_length = 0;
473                 if (tgtp)
474                         atomic_inc(&tgtp->xmt_fcp_rsp_error);
475
476                 /* pick up SLI4 exhange busy condition */
477                 if (bf_get(lpfc_wcqe_c_xb, wcqe)) {
478                         ctxp->flag |= LPFC_NVMET_XBUSY;
479
480                         lpfc_printf_log(phba, KERN_INFO, LOG_NVME_ABTS,
481                                         "6315 IO Cmpl XBUSY: xri x%x: %x/%x\n",
482                                         ctxp->oxid, status, result);
483                 } else {
484                         ctxp->flag &= ~LPFC_NVMET_XBUSY;
485                 }
486
487         } else {
488                 rsp->fcp_error = NVME_SC_SUCCESS;
489                 if (op == NVMET_FCOP_RSP)
490                         rsp->transferred_length = rsp->rsplen;
491                 else
492                         rsp->transferred_length = rsp->transfer_length;
493                 if (tgtp)
494                         atomic_inc(&tgtp->xmt_fcp_rsp_cmpl);
495         }
496
497         if ((op == NVMET_FCOP_READDATA_RSP) ||
498             (op == NVMET_FCOP_RSP)) {
499                 /* Sanity check */
500                 ctxp->state = LPFC_NVMET_STE_DONE;
501                 ctxp->entry_cnt++;
502
503 #ifdef CONFIG_SCSI_LPFC_DEBUG_FS
504                 if (phba->ktime_on) {
505                         if (rsp->op == NVMET_FCOP_READDATA_RSP) {
506                                 ctxp->ts_isr_data =
507                                         cmdwqe->isr_timestamp;
508                                 ctxp->ts_data_nvme =
509                                         ktime_get_ns();
510                                 ctxp->ts_nvme_status =
511                                         ctxp->ts_data_nvme;
512                                 ctxp->ts_status_wqput =
513                                         ctxp->ts_data_nvme;
514                                 ctxp->ts_isr_status =
515                                         ctxp->ts_data_nvme;
516                                 ctxp->ts_status_nvme =
517                                         ctxp->ts_data_nvme;
518                         } else {
519                                 ctxp->ts_isr_status =
520                                         cmdwqe->isr_timestamp;
521                                 ctxp->ts_status_nvme =
522                                         ktime_get_ns();
523                         }
524                 }
525                 if (phba->cpucheck_on & LPFC_CHECK_NVMET_IO) {
526                         id = smp_processor_id();
527                         if (ctxp->cpu != id)
528                                 lpfc_printf_log(phba, KERN_ERR, LOG_NVME_IOERR,
529                                                 "6703 CPU Check cmpl: "
530                                                 "cpu %d expect %d\n",
531                                                 id, ctxp->cpu);
532                         if (ctxp->cpu < LPFC_CHECK_CPU_CNT)
533                                 phba->cpucheck_cmpl_io[id]++;
534                 }
535 #endif
536                 rsp->done(rsp);
537 #ifdef CONFIG_SCSI_LPFC_DEBUG_FS
538                 if (phba->ktime_on)
539                         lpfc_nvmet_ktime(phba, ctxp);
540 #endif
541                 /* lpfc_nvmet_xmt_fcp_release() will recycle the context */
542         } else {
543                 ctxp->entry_cnt++;
544                 start_clean = offsetof(struct lpfc_iocbq, wqe);
545                 memset(((char *)cmdwqe) + start_clean, 0,
546                        (sizeof(struct lpfc_iocbq) - start_clean));
547 #ifdef CONFIG_SCSI_LPFC_DEBUG_FS
548                 if (phba->ktime_on) {
549                         ctxp->ts_isr_data = cmdwqe->isr_timestamp;
550                         ctxp->ts_data_nvme = ktime_get_ns();
551                 }
552                 if (phba->cpucheck_on & LPFC_CHECK_NVMET_IO) {
553                         id = smp_processor_id();
554                         if (ctxp->cpu != id)
555                                 lpfc_printf_log(phba, KERN_ERR, LOG_NVME_IOERR,
556                                                 "6704 CPU Check cmdcmpl: "
557                                                 "cpu %d expect %d\n",
558                                                 id, ctxp->cpu);
559                         if (ctxp->cpu < LPFC_CHECK_CPU_CNT)
560                                 phba->cpucheck_ccmpl_io[id]++;
561                 }
562 #endif
563                 rsp->done(rsp);
564         }
565 }
566
567 static int
568 lpfc_nvmet_xmt_ls_rsp(struct nvmet_fc_target_port *tgtport,
569                       struct nvmefc_tgt_ls_req *rsp)
570 {
571         struct lpfc_nvmet_rcv_ctx *ctxp =
572                 container_of(rsp, struct lpfc_nvmet_rcv_ctx, ctx.ls_req);
573         struct lpfc_hba *phba = ctxp->phba;
574         struct hbq_dmabuf *nvmebuf =
575                 (struct hbq_dmabuf *)ctxp->rqb_buffer;
576         struct lpfc_iocbq *nvmewqeq;
577         struct lpfc_nvmet_tgtport *nvmep = tgtport->private;
578         struct lpfc_dmabuf dmabuf;
579         struct ulp_bde64 bpl;
580         int rc;
581
582         lpfc_printf_log(phba, KERN_INFO, LOG_NVME_DISC,
583                         "6023 %s: Entrypoint ctx %p %p\n", __func__,
584                         ctxp, tgtport);
585
586         nvmewqeq = lpfc_nvmet_prep_ls_wqe(phba, ctxp, rsp->rspdma,
587                                       rsp->rsplen);
588         if (nvmewqeq == NULL) {
589                 atomic_inc(&nvmep->xmt_ls_drop);
590                 lpfc_printf_log(phba, KERN_ERR, LOG_NVME_IOERR,
591                                 "6150 LS Drop IO x%x: Prep\n",
592                                 ctxp->oxid);
593                 lpfc_in_buf_free(phba, &nvmebuf->dbuf);
594                 atomic_inc(&nvmep->xmt_ls_abort);
595                 lpfc_nvmet_unsol_ls_issue_abort(phba, ctxp,
596                                                 ctxp->sid, ctxp->oxid);
597                 return -ENOMEM;
598         }
599
600         /* Save numBdes for bpl2sgl */
601         nvmewqeq->rsvd2 = 1;
602         nvmewqeq->hba_wqidx = 0;
603         nvmewqeq->context3 = &dmabuf;
604         dmabuf.virt = &bpl;
605         bpl.addrLow = nvmewqeq->wqe.xmit_sequence.bde.addrLow;
606         bpl.addrHigh = nvmewqeq->wqe.xmit_sequence.bde.addrHigh;
607         bpl.tus.f.bdeSize = rsp->rsplen;
608         bpl.tus.f.bdeFlags = 0;
609         bpl.tus.w = le32_to_cpu(bpl.tus.w);
610
611         nvmewqeq->wqe_cmpl = lpfc_nvmet_xmt_ls_rsp_cmp;
612         nvmewqeq->iocb_cmpl = NULL;
613         nvmewqeq->context2 = ctxp;
614
615         lpfc_nvmeio_data(phba, "NVMET LS  RESP: xri x%x wqidx x%x len x%x\n",
616                          ctxp->oxid, nvmewqeq->hba_wqidx, rsp->rsplen);
617
618         rc = lpfc_sli4_issue_wqe(phba, LPFC_ELS_RING, nvmewqeq);
619         if (rc == WQE_SUCCESS) {
620                 /*
621                  * Okay to repost buffer here, but wait till cmpl
622                  * before freeing ctxp and iocbq.
623                  */
624                 lpfc_in_buf_free(phba, &nvmebuf->dbuf);
625                 ctxp->rqb_buffer = 0;
626                 atomic_inc(&nvmep->xmt_ls_rsp);
627                 return 0;
628         }
629         /* Give back resources */
630         atomic_inc(&nvmep->xmt_ls_drop);
631         lpfc_printf_log(phba, KERN_ERR, LOG_NVME_IOERR,
632                         "6151 LS Drop IO x%x: Issue %d\n",
633                         ctxp->oxid, rc);
634
635         lpfc_nlp_put(nvmewqeq->context1);
636
637         lpfc_in_buf_free(phba, &nvmebuf->dbuf);
638         atomic_inc(&nvmep->xmt_ls_abort);
639         lpfc_nvmet_unsol_ls_issue_abort(phba, ctxp, ctxp->sid, ctxp->oxid);
640         return -ENXIO;
641 }
642
643 static int
644 lpfc_nvmet_xmt_fcp_op(struct nvmet_fc_target_port *tgtport,
645                       struct nvmefc_tgt_fcp_req *rsp)
646 {
647         struct lpfc_nvmet_tgtport *lpfc_nvmep = tgtport->private;
648         struct lpfc_nvmet_rcv_ctx *ctxp =
649                 container_of(rsp, struct lpfc_nvmet_rcv_ctx, ctx.fcp_req);
650         struct lpfc_hba *phba = ctxp->phba;
651         struct lpfc_iocbq *nvmewqeq;
652         int rc;
653
654 #ifdef CONFIG_SCSI_LPFC_DEBUG_FS
655         if (phba->ktime_on) {
656                 if (rsp->op == NVMET_FCOP_RSP)
657                         ctxp->ts_nvme_status = ktime_get_ns();
658                 else
659                         ctxp->ts_nvme_data = ktime_get_ns();
660         }
661         if (phba->cpucheck_on & LPFC_CHECK_NVMET_IO) {
662                 int id = smp_processor_id();
663                 ctxp->cpu = id;
664                 if (id < LPFC_CHECK_CPU_CNT)
665                         phba->cpucheck_xmt_io[id]++;
666                 if (rsp->hwqid != id) {
667                         lpfc_printf_log(phba, KERN_ERR, LOG_NVME_IOERR,
668                                         "6705 CPU Check OP: "
669                                         "cpu %d expect %d\n",
670                                         id, rsp->hwqid);
671                         ctxp->cpu = rsp->hwqid;
672                 }
673         }
674 #endif
675
676         /* Sanity check */
677         if ((ctxp->flag & LPFC_NVMET_ABTS_RCV) ||
678             (ctxp->state == LPFC_NVMET_STE_ABORT)) {
679                 atomic_inc(&lpfc_nvmep->xmt_fcp_drop);
680                 lpfc_printf_log(phba, KERN_ERR, LOG_NVME_IOERR,
681                                 "6102 IO xri x%x aborted\n",
682                                 ctxp->oxid);
683                 rc = -ENXIO;
684                 goto aerr;
685         }
686
687         nvmewqeq = lpfc_nvmet_prep_fcp_wqe(phba, ctxp);
688         if (nvmewqeq == NULL) {
689                 atomic_inc(&lpfc_nvmep->xmt_fcp_drop);
690                 lpfc_printf_log(phba, KERN_ERR, LOG_NVME_IOERR,
691                                 "6152 FCP Drop IO x%x: Prep\n",
692                                 ctxp->oxid);
693                 rc = -ENXIO;
694                 goto aerr;
695         }
696
697         nvmewqeq->wqe_cmpl = lpfc_nvmet_xmt_fcp_op_cmp;
698         nvmewqeq->iocb_cmpl = NULL;
699         nvmewqeq->context2 = ctxp;
700         nvmewqeq->iocb_flag |=  LPFC_IO_NVMET;
701         ctxp->wqeq->hba_wqidx = rsp->hwqid;
702
703         lpfc_nvmeio_data(phba, "NVMET FCP CMND: xri x%x op x%x len x%x\n",
704                          ctxp->oxid, rsp->op, rsp->rsplen);
705
706         ctxp->flag |= LPFC_NVMET_IO_INP;
707         rc = lpfc_sli4_issue_wqe(phba, LPFC_FCP_RING, nvmewqeq);
708         if (rc == WQE_SUCCESS) {
709 #ifdef CONFIG_SCSI_LPFC_DEBUG_FS
710                 if (!phba->ktime_on)
711                         return 0;
712                 if (rsp->op == NVMET_FCOP_RSP)
713                         ctxp->ts_status_wqput = ktime_get_ns();
714                 else
715                         ctxp->ts_data_wqput = ktime_get_ns();
716 #endif
717                 return 0;
718         }
719
720         /* Give back resources */
721         atomic_inc(&lpfc_nvmep->xmt_fcp_drop);
722         lpfc_printf_log(phba, KERN_ERR, LOG_NVME_IOERR,
723                         "6153 FCP Drop IO x%x: Issue: %d\n",
724                         ctxp->oxid, rc);
725
726         ctxp->wqeq->hba_wqidx = 0;
727         nvmewqeq->context2 = NULL;
728         nvmewqeq->context3 = NULL;
729         rc = -EBUSY;
730 aerr:
731         return rc;
732 }
733
734 static void
735 lpfc_nvmet_targetport_delete(struct nvmet_fc_target_port *targetport)
736 {
737         struct lpfc_nvmet_tgtport *tport = targetport->private;
738
739         /* release any threads waiting for the unreg to complete */
740         complete(&tport->tport_unreg_done);
741 }
742
743 static void
744 lpfc_nvmet_xmt_fcp_abort(struct nvmet_fc_target_port *tgtport,
745                          struct nvmefc_tgt_fcp_req *req)
746 {
747         struct lpfc_nvmet_tgtport *lpfc_nvmep = tgtport->private;
748         struct lpfc_nvmet_rcv_ctx *ctxp =
749                 container_of(req, struct lpfc_nvmet_rcv_ctx, ctx.fcp_req);
750         struct lpfc_hba *phba = ctxp->phba;
751         unsigned long flags;
752
753         lpfc_printf_log(phba, KERN_INFO, LOG_NVME_ABTS,
754                         "6103 Abort op: oxri x%x flg x%x cnt %d\n",
755                         ctxp->oxid, ctxp->flag, ctxp->entry_cnt);
756
757         lpfc_nvmeio_data(phba, "NVMET FCP ABRT: "
758                          "xri x%x flg x%x cnt x%x\n",
759                          ctxp->oxid, ctxp->flag, ctxp->entry_cnt);
760
761         atomic_inc(&lpfc_nvmep->xmt_fcp_abort);
762         ctxp->entry_cnt++;
763         spin_lock_irqsave(&ctxp->ctxlock, flags);
764
765         /* Since iaab/iaar are NOT set, we need to check
766          * if the firmware is in process of aborting IO
767          */
768         if (ctxp->flag & LPFC_NVMET_XBUSY) {
769                 spin_unlock_irqrestore(&ctxp->ctxlock, flags);
770                 return;
771         }
772         ctxp->flag |= LPFC_NVMET_ABORT_OP;
773         if (ctxp->flag & LPFC_NVMET_IO_INP)
774                 lpfc_nvmet_sol_fcp_issue_abort(phba, ctxp, ctxp->sid,
775                                                ctxp->oxid);
776         else
777                 lpfc_nvmet_unsol_fcp_issue_abort(phba, ctxp, ctxp->sid,
778                                                  ctxp->oxid);
779         spin_unlock_irqrestore(&ctxp->ctxlock, flags);
780 }
781
782 static void
783 lpfc_nvmet_xmt_fcp_release(struct nvmet_fc_target_port *tgtport,
784                            struct nvmefc_tgt_fcp_req *rsp)
785 {
786         struct lpfc_nvmet_tgtport *lpfc_nvmep = tgtport->private;
787         struct lpfc_nvmet_rcv_ctx *ctxp =
788                 container_of(rsp, struct lpfc_nvmet_rcv_ctx, ctx.fcp_req);
789         struct lpfc_hba *phba = ctxp->phba;
790         unsigned long flags;
791         bool aborting = false;
792
793         spin_lock_irqsave(&ctxp->ctxlock, flags);
794         if ((ctxp->flag & LPFC_NVMET_ABORT_OP) ||
795             (ctxp->flag & LPFC_NVMET_XBUSY)) {
796                 aborting = true;
797                 /* let the abort path do the real release */
798                 lpfc_nvmet_defer_release(phba, ctxp);
799         }
800         spin_unlock_irqrestore(&ctxp->ctxlock, flags);
801
802         lpfc_nvmeio_data(phba, "NVMET FCP FREE: xri x%x ste %d abt %d\n", ctxp->oxid,
803                          ctxp->state, aborting);
804
805         atomic_inc(&lpfc_nvmep->xmt_fcp_release);
806
807         if (aborting)
808                 return;
809
810         lpfc_nvmet_ctxbuf_post(phba, ctxp->ctxbuf);
811 }
812
813 static struct nvmet_fc_target_template lpfc_tgttemplate = {
814         .targetport_delete = lpfc_nvmet_targetport_delete,
815         .xmt_ls_rsp     = lpfc_nvmet_xmt_ls_rsp,
816         .fcp_op         = lpfc_nvmet_xmt_fcp_op,
817         .fcp_abort      = lpfc_nvmet_xmt_fcp_abort,
818         .fcp_req_release = lpfc_nvmet_xmt_fcp_release,
819
820         .max_hw_queues  = 1,
821         .max_sgl_segments = LPFC_NVMET_DEFAULT_SEGS,
822         .max_dif_sgl_segments = LPFC_NVMET_DEFAULT_SEGS,
823         .dma_boundary = 0xFFFFFFFF,
824
825         /* optional features */
826         .target_features = 0,
827         /* sizes of additional private data for data structures */
828         .target_priv_sz = sizeof(struct lpfc_nvmet_tgtport),
829 };
830
831 void
832 lpfc_nvmet_cleanup_io_context(struct lpfc_hba *phba)
833 {
834         struct lpfc_nvmet_ctxbuf *ctx_buf, *next_ctx_buf;
835         unsigned long flags;
836
837         list_for_each_entry_safe(
838                 ctx_buf, next_ctx_buf,
839                 &phba->sli4_hba.lpfc_nvmet_ctx_list, list) {
840                 spin_lock_irqsave(
841                         &phba->sli4_hba.abts_nvme_buf_list_lock, flags);
842                 list_del_init(&ctx_buf->list);
843                 spin_unlock_irqrestore(
844                         &phba->sli4_hba.abts_nvme_buf_list_lock, flags);
845                 __lpfc_clear_active_sglq(phba,
846                                          ctx_buf->sglq->sli4_lxritag);
847                 ctx_buf->sglq->state = SGL_FREED;
848                 ctx_buf->sglq->ndlp = NULL;
849
850                 spin_lock_irqsave(&phba->sli4_hba.sgl_list_lock, flags);
851                 list_add_tail(&ctx_buf->sglq->list,
852                               &phba->sli4_hba.lpfc_nvmet_sgl_list);
853                 spin_unlock_irqrestore(&phba->sli4_hba.sgl_list_lock,
854                                        flags);
855
856                 lpfc_sli_release_iocbq(phba, ctx_buf->iocbq);
857                 kfree(ctx_buf->context);
858         }
859 }
860
861 int
862 lpfc_nvmet_setup_io_context(struct lpfc_hba *phba)
863 {
864         struct lpfc_nvmet_ctxbuf *ctx_buf;
865         struct lpfc_iocbq *nvmewqe;
866         union lpfc_wqe128 *wqe;
867         int i;
868
869         lpfc_printf_log(phba, KERN_INFO, LOG_NVME,
870                         "6403 Allocate NVMET resources for %d XRIs\n",
871                         phba->sli4_hba.nvmet_xri_cnt);
872
873         /* For all nvmet xris, allocate resources needed to process a
874          * received command on a per xri basis.
875          */
876         for (i = 0; i < phba->sli4_hba.nvmet_xri_cnt; i++) {
877                 ctx_buf = kzalloc(sizeof(*ctx_buf), GFP_KERNEL);
878                 if (!ctx_buf) {
879                         lpfc_printf_log(phba, KERN_ERR, LOG_NVME,
880                                         "6404 Ran out of memory for NVMET\n");
881                         return -ENOMEM;
882                 }
883
884                 ctx_buf->context = kzalloc(sizeof(*ctx_buf->context),
885                                            GFP_KERNEL);
886                 if (!ctx_buf->context) {
887                         kfree(ctx_buf);
888                         lpfc_printf_log(phba, KERN_ERR, LOG_NVME,
889                                         "6405 Ran out of NVMET "
890                                         "context memory\n");
891                         return -ENOMEM;
892                 }
893                 ctx_buf->context->ctxbuf = ctx_buf;
894
895                 ctx_buf->iocbq = lpfc_sli_get_iocbq(phba);
896                 if (!ctx_buf->iocbq) {
897                         kfree(ctx_buf->context);
898                         kfree(ctx_buf);
899                         lpfc_printf_log(phba, KERN_ERR, LOG_NVME,
900                                         "6406 Ran out of NVMET iocb/WQEs\n");
901                         return -ENOMEM;
902                 }
903                 ctx_buf->iocbq->iocb_flag = LPFC_IO_NVMET;
904                 nvmewqe = ctx_buf->iocbq;
905                 wqe = (union lpfc_wqe128 *)&nvmewqe->wqe;
906                 /* Initialize WQE */
907                 memset(wqe, 0, sizeof(union lpfc_wqe));
908                 /* Word 7 */
909                 bf_set(wqe_ct, &wqe->generic.wqe_com, SLI4_CT_RPI);
910                 bf_set(wqe_class, &wqe->generic.wqe_com, CLASS3);
911                 bf_set(wqe_pu, &wqe->generic.wqe_com, 1);
912                 /* Word 10 */
913                 bf_set(wqe_nvme, &wqe->fcp_tsend.wqe_com, 1);
914                 bf_set(wqe_ebde_cnt, &wqe->generic.wqe_com, 0);
915                 bf_set(wqe_qosd, &wqe->generic.wqe_com, 0);
916
917                 ctx_buf->iocbq->context1 = NULL;
918                 spin_lock(&phba->sli4_hba.sgl_list_lock);
919                 ctx_buf->sglq = __lpfc_sli_get_nvmet_sglq(phba, ctx_buf->iocbq);
920                 spin_unlock(&phba->sli4_hba.sgl_list_lock);
921                 if (!ctx_buf->sglq) {
922                         lpfc_sli_release_iocbq(phba, ctx_buf->iocbq);
923                         kfree(ctx_buf->context);
924                         kfree(ctx_buf);
925                         lpfc_printf_log(phba, KERN_ERR, LOG_NVME,
926                                         "6407 Ran out of NVMET XRIs\n");
927                         return -ENOMEM;
928                 }
929                 spin_lock(&phba->sli4_hba.nvmet_io_lock);
930                 list_add_tail(&ctx_buf->list,
931                               &phba->sli4_hba.lpfc_nvmet_ctx_list);
932                 spin_unlock(&phba->sli4_hba.nvmet_io_lock);
933         }
934         phba->sli4_hba.nvmet_ctx_cnt = phba->sli4_hba.nvmet_xri_cnt;
935         return 0;
936 }
937
938 int
939 lpfc_nvmet_create_targetport(struct lpfc_hba *phba)
940 {
941         struct lpfc_vport  *vport = phba->pport;
942         struct lpfc_nvmet_tgtport *tgtp;
943         struct nvmet_fc_port_info pinfo;
944         int error;
945
946         if (phba->targetport)
947                 return 0;
948
949         error = lpfc_nvmet_setup_io_context(phba);
950         if (error)
951                 return error;
952
953         memset(&pinfo, 0, sizeof(struct nvmet_fc_port_info));
954         pinfo.node_name = wwn_to_u64(vport->fc_nodename.u.wwn);
955         pinfo.port_name = wwn_to_u64(vport->fc_portname.u.wwn);
956         pinfo.port_id = vport->fc_myDID;
957
958         /* Limit to LPFC_MAX_NVME_SEG_CNT.
959          * For now need + 1 to get around NVME transport logic.
960          */
961         if (phba->cfg_sg_seg_cnt > LPFC_MAX_NVME_SEG_CNT) {
962                 lpfc_printf_log(phba, KERN_INFO, LOG_NVME | LOG_INIT,
963                                 "6400 Reducing sg segment cnt to %d\n",
964                                 LPFC_MAX_NVME_SEG_CNT);
965                 phba->cfg_nvme_seg_cnt = LPFC_MAX_NVME_SEG_CNT;
966         } else {
967                 phba->cfg_nvme_seg_cnt = phba->cfg_sg_seg_cnt;
968         }
969         lpfc_tgttemplate.max_sgl_segments = phba->cfg_nvme_seg_cnt + 1;
970         lpfc_tgttemplate.max_hw_queues = phba->cfg_nvme_io_channel;
971         lpfc_tgttemplate.target_features = NVMET_FCTGTFEAT_READDATA_RSP |
972                                            NVMET_FCTGTFEAT_CMD_IN_ISR |
973                                            NVMET_FCTGTFEAT_OPDONE_IN_ISR;
974
975 #if (IS_ENABLED(CONFIG_NVME_TARGET_FC))
976         error = nvmet_fc_register_targetport(&pinfo, &lpfc_tgttemplate,
977                                              &phba->pcidev->dev,
978                                              &phba->targetport);
979 #else
980         error = -ENOENT;
981 #endif
982         if (error) {
983                 lpfc_printf_log(phba, KERN_ERR, LOG_NVME_DISC,
984                                 "6025 Cannot register NVME targetport "
985                                 "x%x\n", error);
986                 phba->targetport = NULL;
987
988                 lpfc_nvmet_cleanup_io_context(phba);
989
990         } else {
991                 tgtp = (struct lpfc_nvmet_tgtport *)
992                         phba->targetport->private;
993                 tgtp->phba = phba;
994
995                 lpfc_printf_log(phba, KERN_INFO, LOG_NVME_DISC,
996                                 "6026 Registered NVME "
997                                 "targetport: %p, private %p "
998                                 "portnm %llx nodenm %llx\n",
999                                 phba->targetport, tgtp,
1000                                 pinfo.port_name, pinfo.node_name);
1001
1002                 atomic_set(&tgtp->rcv_ls_req_in, 0);
1003                 atomic_set(&tgtp->rcv_ls_req_out, 0);
1004                 atomic_set(&tgtp->rcv_ls_req_drop, 0);
1005                 atomic_set(&tgtp->xmt_ls_abort, 0);
1006                 atomic_set(&tgtp->xmt_ls_abort_cmpl, 0);
1007                 atomic_set(&tgtp->xmt_ls_rsp, 0);
1008                 atomic_set(&tgtp->xmt_ls_drop, 0);
1009                 atomic_set(&tgtp->xmt_ls_rsp_error, 0);
1010                 atomic_set(&tgtp->xmt_ls_rsp_cmpl, 0);
1011                 atomic_set(&tgtp->rcv_fcp_cmd_in, 0);
1012                 atomic_set(&tgtp->rcv_fcp_cmd_out, 0);
1013                 atomic_set(&tgtp->rcv_fcp_cmd_drop, 0);
1014                 atomic_set(&tgtp->xmt_fcp_drop, 0);
1015                 atomic_set(&tgtp->xmt_fcp_read_rsp, 0);
1016                 atomic_set(&tgtp->xmt_fcp_read, 0);
1017                 atomic_set(&tgtp->xmt_fcp_write, 0);
1018                 atomic_set(&tgtp->xmt_fcp_rsp, 0);
1019                 atomic_set(&tgtp->xmt_fcp_release, 0);
1020                 atomic_set(&tgtp->xmt_fcp_rsp_cmpl, 0);
1021                 atomic_set(&tgtp->xmt_fcp_rsp_error, 0);
1022                 atomic_set(&tgtp->xmt_fcp_rsp_drop, 0);
1023                 atomic_set(&tgtp->xmt_fcp_abort, 0);
1024                 atomic_set(&tgtp->xmt_fcp_abort_cmpl, 0);
1025                 atomic_set(&tgtp->xmt_abort_unsol, 0);
1026                 atomic_set(&tgtp->xmt_abort_sol, 0);
1027                 atomic_set(&tgtp->xmt_abort_rsp, 0);
1028                 atomic_set(&tgtp->xmt_abort_rsp_error, 0);
1029         }
1030         return error;
1031 }
1032
1033 int
1034 lpfc_nvmet_update_targetport(struct lpfc_hba *phba)
1035 {
1036         struct lpfc_vport  *vport = phba->pport;
1037
1038         if (!phba->targetport)
1039                 return 0;
1040
1041         lpfc_printf_vlog(vport, KERN_INFO, LOG_NVME,
1042                          "6007 Update NVMET port %p did x%x\n",
1043                          phba->targetport, vport->fc_myDID);
1044
1045         phba->targetport->port_id = vport->fc_myDID;
1046         return 0;
1047 }
1048
1049 /**
1050  * lpfc_sli4_nvmet_xri_aborted - Fast-path process of nvmet xri abort
1051  * @phba: pointer to lpfc hba data structure.
1052  * @axri: pointer to the nvmet xri abort wcqe structure.
1053  *
1054  * This routine is invoked by the worker thread to process a SLI4 fast-path
1055  * NVMET aborted xri.
1056  **/
1057 void
1058 lpfc_sli4_nvmet_xri_aborted(struct lpfc_hba *phba,
1059                             struct sli4_wcqe_xri_aborted *axri)
1060 {
1061         uint16_t xri = bf_get(lpfc_wcqe_xa_xri, axri);
1062         uint16_t rxid = bf_get(lpfc_wcqe_xa_remote_xid, axri);
1063         struct lpfc_nvmet_rcv_ctx *ctxp, *next_ctxp;
1064         struct lpfc_nodelist *ndlp;
1065         unsigned long iflag = 0;
1066         int rrq_empty = 0;
1067         bool released = false;
1068
1069         lpfc_printf_log(phba, KERN_INFO, LOG_NVME_ABTS,
1070                         "6317 XB aborted xri x%x rxid x%x\n", xri, rxid);
1071
1072         if (!(phba->cfg_enable_fc4_type & LPFC_ENABLE_NVME))
1073                 return;
1074         spin_lock_irqsave(&phba->hbalock, iflag);
1075         spin_lock(&phba->sli4_hba.abts_nvme_buf_list_lock);
1076         list_for_each_entry_safe(ctxp, next_ctxp,
1077                                  &phba->sli4_hba.lpfc_abts_nvmet_ctx_list,
1078                                  list) {
1079                 if (ctxp->ctxbuf->sglq->sli4_xritag != xri)
1080                         continue;
1081
1082                 /* Check if we already received a free context call
1083                  * and we have completed processing an abort situation.
1084                  */
1085                 if (ctxp->flag & LPFC_NVMET_CTX_RLS &&
1086                     !(ctxp->flag & LPFC_NVMET_ABORT_OP)) {
1087                         list_del(&ctxp->list);
1088                         released = true;
1089                 }
1090                 ctxp->flag &= ~LPFC_NVMET_XBUSY;
1091                 spin_unlock(&phba->sli4_hba.abts_nvme_buf_list_lock);
1092
1093                 rrq_empty = list_empty(&phba->active_rrq_list);
1094                 spin_unlock_irqrestore(&phba->hbalock, iflag);
1095                 ndlp = lpfc_findnode_did(phba->pport, ctxp->sid);
1096                 if (ndlp && NLP_CHK_NODE_ACT(ndlp) &&
1097                     (ndlp->nlp_state == NLP_STE_UNMAPPED_NODE ||
1098                      ndlp->nlp_state == NLP_STE_MAPPED_NODE)) {
1099                         lpfc_set_rrq_active(phba, ndlp,
1100                                 ctxp->ctxbuf->sglq->sli4_lxritag,
1101                                 rxid, 1);
1102                         lpfc_sli4_abts_err_handler(phba, ndlp, axri);
1103                 }
1104
1105                 lpfc_printf_log(phba, KERN_INFO, LOG_NVME_ABTS,
1106                                 "6318 XB aborted %x flg x%x (%x)\n",
1107                                 ctxp->oxid, ctxp->flag, released);
1108                 if (released)
1109                         lpfc_nvmet_ctxbuf_post(phba, ctxp->ctxbuf);
1110
1111                 if (rrq_empty)
1112                         lpfc_worker_wake_up(phba);
1113                 return;
1114         }
1115         spin_unlock(&phba->sli4_hba.abts_nvme_buf_list_lock);
1116         spin_unlock_irqrestore(&phba->hbalock, iflag);
1117 }
1118
1119 int
1120 lpfc_nvmet_rcv_unsol_abort(struct lpfc_vport *vport,
1121                            struct fc_frame_header *fc_hdr)
1122
1123 {
1124 #if (IS_ENABLED(CONFIG_NVME_TARGET_FC))
1125         struct lpfc_hba *phba = vport->phba;
1126         struct lpfc_nvmet_rcv_ctx *ctxp, *next_ctxp;
1127         struct nvmefc_tgt_fcp_req *rsp;
1128         uint16_t xri;
1129         unsigned long iflag = 0;
1130
1131         xri = be16_to_cpu(fc_hdr->fh_ox_id);
1132
1133         spin_lock_irqsave(&phba->hbalock, iflag);
1134         spin_lock(&phba->sli4_hba.abts_nvme_buf_list_lock);
1135         list_for_each_entry_safe(ctxp, next_ctxp,
1136                                  &phba->sli4_hba.lpfc_abts_nvmet_ctx_list,
1137                                  list) {
1138                 if (ctxp->ctxbuf->sglq->sli4_xritag != xri)
1139                         continue;
1140
1141                 spin_unlock(&phba->sli4_hba.abts_nvme_buf_list_lock);
1142                 spin_unlock_irqrestore(&phba->hbalock, iflag);
1143
1144                 spin_lock_irqsave(&ctxp->ctxlock, iflag);
1145                 ctxp->flag |= LPFC_NVMET_ABTS_RCV;
1146                 spin_unlock_irqrestore(&ctxp->ctxlock, iflag);
1147
1148                 lpfc_nvmeio_data(phba,
1149                         "NVMET ABTS RCV: xri x%x CPU %02x rjt %d\n",
1150                         xri, smp_processor_id(), 0);
1151
1152                 lpfc_printf_log(phba, KERN_INFO, LOG_NVME_ABTS,
1153                                 "6319 NVMET Rcv ABTS:acc xri x%x\n", xri);
1154
1155                 rsp = &ctxp->ctx.fcp_req;
1156                 nvmet_fc_rcv_fcp_abort(phba->targetport, rsp);
1157
1158                 /* Respond with BA_ACC accordingly */
1159                 lpfc_sli4_seq_abort_rsp(vport, fc_hdr, 1);
1160                 return 0;
1161         }
1162         spin_unlock(&phba->sli4_hba.abts_nvme_buf_list_lock);
1163         spin_unlock_irqrestore(&phba->hbalock, iflag);
1164
1165         lpfc_nvmeio_data(phba, "NVMET ABTS RCV: xri x%x CPU %02x rjt %d\n",
1166                          xri, smp_processor_id(), 1);
1167
1168         lpfc_printf_log(phba, KERN_INFO, LOG_NVME_ABTS,
1169                         "6320 NVMET Rcv ABTS:rjt xri x%x\n", xri);
1170
1171         /* Respond with BA_RJT accordingly */
1172         lpfc_sli4_seq_abort_rsp(vport, fc_hdr, 0);
1173 #endif
1174         return 0;
1175 }
1176
1177 void
1178 lpfc_nvmet_destroy_targetport(struct lpfc_hba *phba)
1179 {
1180 #if (IS_ENABLED(CONFIG_NVME_TARGET_FC))
1181         struct lpfc_nvmet_tgtport *tgtp;
1182
1183         if (phba->nvmet_support == 0)
1184                 return;
1185         if (phba->targetport) {
1186                 tgtp = (struct lpfc_nvmet_tgtport *)phba->targetport->private;
1187                 init_completion(&tgtp->tport_unreg_done);
1188                 nvmet_fc_unregister_targetport(phba->targetport);
1189                 wait_for_completion_timeout(&tgtp->tport_unreg_done, 5);
1190                 lpfc_nvmet_cleanup_io_context(phba);
1191         }
1192         phba->targetport = NULL;
1193 #endif
1194 }
1195
1196 /**
1197  * lpfc_nvmet_unsol_ls_buffer - Process an unsolicited event data buffer
1198  * @phba: pointer to lpfc hba data structure.
1199  * @pring: pointer to a SLI ring.
1200  * @nvmebuf: pointer to lpfc nvme command HBQ data structure.
1201  *
1202  * This routine is used for processing the WQE associated with a unsolicited
1203  * event. It first determines whether there is an existing ndlp that matches
1204  * the DID from the unsolicited WQE. If not, it will create a new one with
1205  * the DID from the unsolicited WQE. The ELS command from the unsolicited
1206  * WQE is then used to invoke the proper routine and to set up proper state
1207  * of the discovery state machine.
1208  **/
1209 static void
1210 lpfc_nvmet_unsol_ls_buffer(struct lpfc_hba *phba, struct lpfc_sli_ring *pring,
1211                            struct hbq_dmabuf *nvmebuf)
1212 {
1213 #if (IS_ENABLED(CONFIG_NVME_TARGET_FC))
1214         struct lpfc_nvmet_tgtport *tgtp;
1215         struct fc_frame_header *fc_hdr;
1216         struct lpfc_nvmet_rcv_ctx *ctxp;
1217         uint32_t *payload;
1218         uint32_t size, oxid, sid, rc;
1219
1220         if (!nvmebuf || !phba->targetport) {
1221                 lpfc_printf_log(phba, KERN_ERR, LOG_NVME_IOERR,
1222                                 "6154 LS Drop IO\n");
1223                 oxid = 0;
1224                 size = 0;
1225                 sid = 0;
1226                 ctxp = NULL;
1227                 goto dropit;
1228         }
1229
1230         tgtp = (struct lpfc_nvmet_tgtport *)phba->targetport->private;
1231         payload = (uint32_t *)(nvmebuf->dbuf.virt);
1232         fc_hdr = (struct fc_frame_header *)(nvmebuf->hbuf.virt);
1233         size = bf_get(lpfc_rcqe_length,  &nvmebuf->cq_event.cqe.rcqe_cmpl);
1234         oxid = be16_to_cpu(fc_hdr->fh_ox_id);
1235         sid = sli4_sid_from_fc_hdr(fc_hdr);
1236
1237         ctxp = kzalloc(sizeof(struct lpfc_nvmet_rcv_ctx), GFP_ATOMIC);
1238         if (ctxp == NULL) {
1239                 atomic_inc(&tgtp->rcv_ls_req_drop);
1240                 lpfc_printf_log(phba, KERN_ERR, LOG_NVME_IOERR,
1241                                 "6155 LS Drop IO x%x: Alloc\n",
1242                                 oxid);
1243 dropit:
1244                 lpfc_nvmeio_data(phba, "NVMET LS  DROP: "
1245                                  "xri x%x sz %d from %06x\n",
1246                                  oxid, size, sid);
1247                 if (nvmebuf)
1248                         lpfc_in_buf_free(phba, &nvmebuf->dbuf);
1249                 return;
1250         }
1251         ctxp->phba = phba;
1252         ctxp->size = size;
1253         ctxp->oxid = oxid;
1254         ctxp->sid = sid;
1255         ctxp->wqeq = NULL;
1256         ctxp->state = LPFC_NVMET_STE_RCV;
1257         ctxp->rqb_buffer = (void *)nvmebuf;
1258
1259         lpfc_nvmeio_data(phba, "NVMET LS   RCV: xri x%x sz %d from %06x\n",
1260                          oxid, size, sid);
1261         /*
1262          * The calling sequence should be:
1263          * nvmet_fc_rcv_ls_req -> lpfc_nvmet_xmt_ls_rsp/cmp ->_req->done
1264          * lpfc_nvmet_xmt_ls_rsp_cmp should free the allocated ctxp.
1265          */
1266         atomic_inc(&tgtp->rcv_ls_req_in);
1267         rc = nvmet_fc_rcv_ls_req(phba->targetport, &ctxp->ctx.ls_req,
1268                                  payload, size);
1269
1270         lpfc_printf_log(phba, KERN_INFO, LOG_NVME_DISC,
1271                         "6037 %s: ctx %p sz %d rc %d: %08x %08x %08x "
1272                         "%08x %08x %08x\n", __func__, ctxp, size, rc,
1273                         *payload, *(payload+1), *(payload+2),
1274                         *(payload+3), *(payload+4), *(payload+5));
1275
1276         if (rc == 0) {
1277                 atomic_inc(&tgtp->rcv_ls_req_out);
1278                 return;
1279         }
1280
1281         lpfc_nvmeio_data(phba, "NVMET LS  DROP: xri x%x sz %d from %06x\n",
1282                          oxid, size, sid);
1283
1284         atomic_inc(&tgtp->rcv_ls_req_drop);
1285         lpfc_printf_log(phba, KERN_ERR, LOG_NVME_IOERR,
1286                         "6156 LS Drop IO x%x: nvmet_fc_rcv_ls_req %d\n",
1287                         ctxp->oxid, rc);
1288
1289         /* We assume a rcv'ed cmd ALWAYs fits into 1 buffer */
1290         if (nvmebuf)
1291                 lpfc_in_buf_free(phba, &nvmebuf->dbuf);
1292
1293         atomic_inc(&tgtp->xmt_ls_abort);
1294         lpfc_nvmet_unsol_ls_issue_abort(phba, ctxp, sid, oxid);
1295 #endif
1296 }
1297
1298 /**
1299  * lpfc_nvmet_unsol_fcp_buffer - Process an unsolicited event data buffer
1300  * @phba: pointer to lpfc hba data structure.
1301  * @pring: pointer to a SLI ring.
1302  * @nvmebuf: pointer to lpfc nvme command HBQ data structure.
1303  *
1304  * This routine is used for processing the WQE associated with a unsolicited
1305  * event. It first determines whether there is an existing ndlp that matches
1306  * the DID from the unsolicited WQE. If not, it will create a new one with
1307  * the DID from the unsolicited WQE. The ELS command from the unsolicited
1308  * WQE is then used to invoke the proper routine and to set up proper state
1309  * of the discovery state machine.
1310  **/
1311 static void
1312 lpfc_nvmet_unsol_fcp_buffer(struct lpfc_hba *phba,
1313                             struct lpfc_sli_ring *pring,
1314                             struct rqb_dmabuf *nvmebuf,
1315                             uint64_t isr_timestamp)
1316 {
1317 #if (IS_ENABLED(CONFIG_NVME_TARGET_FC))
1318         struct lpfc_nvmet_rcv_ctx *ctxp;
1319         struct lpfc_nvmet_tgtport *tgtp;
1320         struct fc_frame_header *fc_hdr;
1321         struct lpfc_nvmet_ctxbuf *ctx_buf;
1322         uint32_t *payload;
1323         uint32_t size, oxid, sid, rc, qno;
1324         unsigned long iflag;
1325 #ifdef CONFIG_SCSI_LPFC_DEBUG_FS
1326         uint32_t id;
1327 #endif
1328
1329         ctx_buf = NULL;
1330         if (!nvmebuf || !phba->targetport) {
1331                 lpfc_printf_log(phba, KERN_ERR, LOG_NVME_IOERR,
1332                                 "6157 NVMET FCP Drop IO\n");
1333                 oxid = 0;
1334                 size = 0;
1335                 sid = 0;
1336                 ctxp = NULL;
1337                 goto dropit;
1338         }
1339
1340         spin_lock_irqsave(&phba->sli4_hba.nvmet_io_lock, iflag);
1341         if (phba->sli4_hba.nvmet_ctx_cnt) {
1342                 list_remove_head(&phba->sli4_hba.lpfc_nvmet_ctx_list,
1343                                  ctx_buf, struct lpfc_nvmet_ctxbuf, list);
1344                 phba->sli4_hba.nvmet_ctx_cnt--;
1345         }
1346         spin_unlock_irqrestore(&phba->sli4_hba.nvmet_io_lock, iflag);
1347
1348         fc_hdr = (struct fc_frame_header *)(nvmebuf->hbuf.virt);
1349         oxid = be16_to_cpu(fc_hdr->fh_ox_id);
1350         size = nvmebuf->bytes_recv;
1351
1352 #ifdef CONFIG_SCSI_LPFC_DEBUG_FS
1353         if (phba->cpucheck_on & LPFC_CHECK_NVMET_RCV) {
1354                 id = smp_processor_id();
1355                 if (id < LPFC_CHECK_CPU_CNT)
1356                         phba->cpucheck_rcv_io[id]++;
1357         }
1358 #endif
1359
1360         lpfc_nvmeio_data(phba, "NVMET FCP  RCV: xri x%x sz %d CPU %02x\n",
1361                          oxid, size, smp_processor_id());
1362
1363         if (!ctx_buf) {
1364                 /* Queue this NVME IO to process later */
1365                 spin_lock_irqsave(&phba->sli4_hba.nvmet_io_wait_lock, iflag);
1366                 list_add_tail(&nvmebuf->hbuf.list,
1367                               &phba->sli4_hba.lpfc_nvmet_io_wait_list);
1368                 phba->sli4_hba.nvmet_io_wait_cnt++;
1369                 phba->sli4_hba.nvmet_io_wait_total++;
1370                 spin_unlock_irqrestore(&phba->sli4_hba.nvmet_io_wait_lock,
1371                                        iflag);
1372
1373                 /* Post a brand new DMA buffer to RQ */
1374                 qno = nvmebuf->idx;
1375                 lpfc_post_rq_buffer(
1376                         phba, phba->sli4_hba.nvmet_mrq_hdr[qno],
1377                         phba->sli4_hba.nvmet_mrq_data[qno], 1, qno);
1378                 return;
1379         }
1380
1381         tgtp = (struct lpfc_nvmet_tgtport *)phba->targetport->private;
1382         payload = (uint32_t *)(nvmebuf->dbuf.virt);
1383         sid = sli4_sid_from_fc_hdr(fc_hdr);
1384
1385         ctxp = (struct lpfc_nvmet_rcv_ctx *)ctx_buf->context;
1386         memset(ctxp, 0, sizeof(ctxp->ctx));
1387         ctxp->wqeq = NULL;
1388         ctxp->txrdy = NULL;
1389         ctxp->offset = 0;
1390         ctxp->phba = phba;
1391         ctxp->size = size;
1392         ctxp->oxid = oxid;
1393         ctxp->sid = sid;
1394         ctxp->state = LPFC_NVMET_STE_RCV;
1395         ctxp->entry_cnt = 1;
1396         ctxp->flag = 0;
1397         ctxp->ctxbuf = ctx_buf;
1398         spin_lock_init(&ctxp->ctxlock);
1399
1400 #ifdef CONFIG_SCSI_LPFC_DEBUG_FS
1401         if (phba->ktime_on) {
1402                 ctxp->ts_isr_cmd = isr_timestamp;
1403                 ctxp->ts_cmd_nvme = ktime_get_ns();
1404                 ctxp->ts_nvme_data = 0;
1405                 ctxp->ts_data_wqput = 0;
1406                 ctxp->ts_isr_data = 0;
1407                 ctxp->ts_data_nvme = 0;
1408                 ctxp->ts_nvme_status = 0;
1409                 ctxp->ts_status_wqput = 0;
1410                 ctxp->ts_isr_status = 0;
1411                 ctxp->ts_status_nvme = 0;
1412         }
1413 #endif
1414
1415         atomic_inc(&tgtp->rcv_fcp_cmd_in);
1416         /*
1417          * The calling sequence should be:
1418          * nvmet_fc_rcv_fcp_req -> lpfc_nvmet_xmt_fcp_op/cmp -> req->done
1419          * lpfc_nvmet_xmt_fcp_op_cmp should free the allocated ctxp.
1420          * When we return from nvmet_fc_rcv_fcp_req, all relevant info in
1421          * the NVME command / FC header is stored, so we are free to repost
1422          * the buffer.
1423          */
1424         rc = nvmet_fc_rcv_fcp_req(phba->targetport, &ctxp->ctx.fcp_req,
1425                                   payload, size);
1426
1427         /* Process FCP command */
1428         if (rc == 0) {
1429                 atomic_inc(&tgtp->rcv_fcp_cmd_out);
1430                 lpfc_rq_buf_free(phba, &nvmebuf->hbuf); /* repost */
1431                 return;
1432         }
1433
1434         atomic_inc(&tgtp->rcv_fcp_cmd_drop);
1435         lpfc_printf_log(phba, KERN_ERR, LOG_NVME_IOERR,
1436                         "6159 FCP Drop IO x%x: err x%x: x%x x%x x%x\n",
1437                         ctxp->oxid, rc,
1438                         atomic_read(&tgtp->rcv_fcp_cmd_in),
1439                         atomic_read(&tgtp->rcv_fcp_cmd_out),
1440                         atomic_read(&tgtp->xmt_fcp_release));
1441 dropit:
1442         lpfc_nvmeio_data(phba, "NVMET FCP DROP: xri x%x sz %d from %06x\n",
1443                          oxid, size, sid);
1444         if (oxid) {
1445                 lpfc_nvmet_defer_release(phba, ctxp);
1446                 lpfc_nvmet_unsol_fcp_issue_abort(phba, ctxp, sid, oxid);
1447                 lpfc_rq_buf_free(phba, &nvmebuf->hbuf); /* repost */
1448                 return;
1449         }
1450
1451         if (ctx_buf)
1452                 lpfc_nvmet_ctxbuf_post(phba, ctx_buf);
1453
1454         if (nvmebuf)
1455                 lpfc_rq_buf_free(phba, &nvmebuf->hbuf); /* repost */
1456 #endif
1457 }
1458
1459 /**
1460  * lpfc_nvmet_unsol_ls_event - Process an unsolicited event from an nvme nport
1461  * @phba: pointer to lpfc hba data structure.
1462  * @pring: pointer to a SLI ring.
1463  * @nvmebuf: pointer to received nvme data structure.
1464  *
1465  * This routine is used to process an unsolicited event received from a SLI
1466  * (Service Level Interface) ring. The actual processing of the data buffer
1467  * associated with the unsolicited event is done by invoking the routine
1468  * lpfc_nvmet_unsol_ls_buffer() after properly set up the buffer from the
1469  * SLI RQ on which the unsolicited event was received.
1470  **/
1471 void
1472 lpfc_nvmet_unsol_ls_event(struct lpfc_hba *phba, struct lpfc_sli_ring *pring,
1473                           struct lpfc_iocbq *piocb)
1474 {
1475         struct lpfc_dmabuf *d_buf;
1476         struct hbq_dmabuf *nvmebuf;
1477
1478         d_buf = piocb->context2;
1479         nvmebuf = container_of(d_buf, struct hbq_dmabuf, dbuf);
1480
1481         if (phba->nvmet_support == 0) {
1482                 lpfc_in_buf_free(phba, &nvmebuf->dbuf);
1483                 return;
1484         }
1485         lpfc_nvmet_unsol_ls_buffer(phba, pring, nvmebuf);
1486 }
1487
1488 /**
1489  * lpfc_nvmet_unsol_fcp_event - Process an unsolicited event from an nvme nport
1490  * @phba: pointer to lpfc hba data structure.
1491  * @pring: pointer to a SLI ring.
1492  * @nvmebuf: pointer to received nvme data structure.
1493  *
1494  * This routine is used to process an unsolicited event received from a SLI
1495  * (Service Level Interface) ring. The actual processing of the data buffer
1496  * associated with the unsolicited event is done by invoking the routine
1497  * lpfc_nvmet_unsol_fcp_buffer() after properly set up the buffer from the
1498  * SLI RQ on which the unsolicited event was received.
1499  **/
1500 void
1501 lpfc_nvmet_unsol_fcp_event(struct lpfc_hba *phba,
1502                            struct lpfc_sli_ring *pring,
1503                            struct rqb_dmabuf *nvmebuf,
1504                            uint64_t isr_timestamp)
1505 {
1506         if (phba->nvmet_support == 0) {
1507                 lpfc_rq_buf_free(phba, &nvmebuf->hbuf);
1508                 return;
1509         }
1510         lpfc_nvmet_unsol_fcp_buffer(phba, pring, nvmebuf,
1511                                     isr_timestamp);
1512 }
1513
1514 /**
1515  * lpfc_nvmet_prep_ls_wqe - Allocate and prepare a lpfc wqe data structure
1516  * @phba: pointer to a host N_Port data structure.
1517  * @ctxp: Context info for NVME LS Request
1518  * @rspbuf: DMA buffer of NVME command.
1519  * @rspsize: size of the NVME command.
1520  *
1521  * This routine is used for allocating a lpfc-WQE data structure from
1522  * the driver lpfc-WQE free-list and prepare the WQE with the parameters
1523  * passed into the routine for discovery state machine to issue an Extended
1524  * Link Service (NVME) commands. It is a generic lpfc-WQE allocation
1525  * and preparation routine that is used by all the discovery state machine
1526  * routines and the NVME command-specific fields will be later set up by
1527  * the individual discovery machine routines after calling this routine
1528  * allocating and preparing a generic WQE data structure. It fills in the
1529  * Buffer Descriptor Entries (BDEs), allocates buffers for both command
1530  * payload and response payload (if expected). The reference count on the
1531  * ndlp is incremented by 1 and the reference to the ndlp is put into
1532  * context1 of the WQE data structure for this WQE to hold the ndlp
1533  * reference for the command's callback function to access later.
1534  *
1535  * Return code
1536  *   Pointer to the newly allocated/prepared nvme wqe data structure
1537  *   NULL - when nvme wqe data structure allocation/preparation failed
1538  **/
1539 static struct lpfc_iocbq *
1540 lpfc_nvmet_prep_ls_wqe(struct lpfc_hba *phba,
1541                        struct lpfc_nvmet_rcv_ctx *ctxp,
1542                        dma_addr_t rspbuf, uint16_t rspsize)
1543 {
1544         struct lpfc_nodelist *ndlp;
1545         struct lpfc_iocbq *nvmewqe;
1546         union lpfc_wqe *wqe;
1547
1548         if (!lpfc_is_link_up(phba)) {
1549                 lpfc_printf_log(phba, KERN_ERR, LOG_NVME_DISC,
1550                                 "6104 lpfc_nvmet_prep_ls_wqe: link err: "
1551                                 "NPORT x%x oxid:x%x\n",
1552                                 ctxp->sid, ctxp->oxid);
1553                 return NULL;
1554         }
1555
1556         /* Allocate buffer for  command wqe */
1557         nvmewqe = lpfc_sli_get_iocbq(phba);
1558         if (nvmewqe == NULL) {
1559                 lpfc_printf_log(phba, KERN_ERR, LOG_NVME_DISC,
1560                                 "6105 lpfc_nvmet_prep_ls_wqe: No WQE: "
1561                                 "NPORT x%x oxid:x%x\n",
1562                                 ctxp->sid, ctxp->oxid);
1563                 return NULL;
1564         }
1565
1566         ndlp = lpfc_findnode_did(phba->pport, ctxp->sid);
1567         if (!ndlp || !NLP_CHK_NODE_ACT(ndlp) ||
1568             ((ndlp->nlp_state != NLP_STE_UNMAPPED_NODE) &&
1569             (ndlp->nlp_state != NLP_STE_MAPPED_NODE))) {
1570                 lpfc_printf_log(phba, KERN_ERR, LOG_NVME_DISC,
1571                                 "6106 lpfc_nvmet_prep_ls_wqe: No ndlp: "
1572                                 "NPORT x%x oxid:x%x\n",
1573                                 ctxp->sid, ctxp->oxid);
1574                 goto nvme_wqe_free_wqeq_exit;
1575         }
1576         ctxp->wqeq = nvmewqe;
1577
1578         /* prevent preparing wqe with NULL ndlp reference */
1579         nvmewqe->context1 = lpfc_nlp_get(ndlp);
1580         if (nvmewqe->context1 == NULL)
1581                 goto nvme_wqe_free_wqeq_exit;
1582         nvmewqe->context2 = ctxp;
1583
1584         wqe = &nvmewqe->wqe;
1585         memset(wqe, 0, sizeof(union lpfc_wqe));
1586
1587         /* Words 0 - 2 */
1588         wqe->xmit_sequence.bde.tus.f.bdeFlags = BUFF_TYPE_BDE_64;
1589         wqe->xmit_sequence.bde.tus.f.bdeSize = rspsize;
1590         wqe->xmit_sequence.bde.addrLow = le32_to_cpu(putPaddrLow(rspbuf));
1591         wqe->xmit_sequence.bde.addrHigh = le32_to_cpu(putPaddrHigh(rspbuf));
1592
1593         /* Word 3 */
1594
1595         /* Word 4 */
1596
1597         /* Word 5 */
1598         bf_set(wqe_dfctl, &wqe->xmit_sequence.wge_ctl, 0);
1599         bf_set(wqe_ls, &wqe->xmit_sequence.wge_ctl, 1);
1600         bf_set(wqe_la, &wqe->xmit_sequence.wge_ctl, 0);
1601         bf_set(wqe_rctl, &wqe->xmit_sequence.wge_ctl, FC_RCTL_ELS4_REP);
1602         bf_set(wqe_type, &wqe->xmit_sequence.wge_ctl, FC_TYPE_NVME);
1603
1604         /* Word 6 */
1605         bf_set(wqe_ctxt_tag, &wqe->xmit_sequence.wqe_com,
1606                phba->sli4_hba.rpi_ids[ndlp->nlp_rpi]);
1607         bf_set(wqe_xri_tag, &wqe->xmit_sequence.wqe_com, nvmewqe->sli4_xritag);
1608
1609         /* Word 7 */
1610         bf_set(wqe_cmnd, &wqe->xmit_sequence.wqe_com,
1611                CMD_XMIT_SEQUENCE64_WQE);
1612         bf_set(wqe_ct, &wqe->xmit_sequence.wqe_com, SLI4_CT_RPI);
1613         bf_set(wqe_class, &wqe->xmit_sequence.wqe_com, CLASS3);
1614         bf_set(wqe_pu, &wqe->xmit_sequence.wqe_com, 0);
1615
1616         /* Word 8 */
1617         wqe->xmit_sequence.wqe_com.abort_tag = nvmewqe->iotag;
1618
1619         /* Word 9 */
1620         bf_set(wqe_reqtag, &wqe->xmit_sequence.wqe_com, nvmewqe->iotag);
1621         /* Needs to be set by caller */
1622         bf_set(wqe_rcvoxid, &wqe->xmit_sequence.wqe_com, ctxp->oxid);
1623
1624         /* Word 10 */
1625         bf_set(wqe_dbde, &wqe->xmit_sequence.wqe_com, 1);
1626         bf_set(wqe_iod, &wqe->xmit_sequence.wqe_com, LPFC_WQE_IOD_WRITE);
1627         bf_set(wqe_lenloc, &wqe->xmit_sequence.wqe_com,
1628                LPFC_WQE_LENLOC_WORD12);
1629         bf_set(wqe_ebde_cnt, &wqe->xmit_sequence.wqe_com, 0);
1630
1631         /* Word 11 */
1632         bf_set(wqe_cqid, &wqe->xmit_sequence.wqe_com,
1633                LPFC_WQE_CQ_ID_DEFAULT);
1634         bf_set(wqe_cmd_type, &wqe->xmit_sequence.wqe_com,
1635                OTHER_COMMAND);
1636
1637         /* Word 12 */
1638         wqe->xmit_sequence.xmit_len = rspsize;
1639
1640         nvmewqe->retry = 1;
1641         nvmewqe->vport = phba->pport;
1642         nvmewqe->drvrTimeout = (phba->fc_ratov * 3) + LPFC_DRVR_TIMEOUT;
1643         nvmewqe->iocb_flag |= LPFC_IO_NVME_LS;
1644
1645         /* Xmit NVME response to remote NPORT <did> */
1646         lpfc_printf_log(phba, KERN_INFO, LOG_NVME_DISC,
1647                         "6039 Xmit NVME LS response to remote "
1648                         "NPORT x%x iotag:x%x oxid:x%x size:x%x\n",
1649                         ndlp->nlp_DID, nvmewqe->iotag, ctxp->oxid,
1650                         rspsize);
1651         return nvmewqe;
1652
1653 nvme_wqe_free_wqeq_exit:
1654         nvmewqe->context2 = NULL;
1655         nvmewqe->context3 = NULL;
1656         lpfc_sli_release_iocbq(phba, nvmewqe);
1657         return NULL;
1658 }
1659
1660
1661 static struct lpfc_iocbq *
1662 lpfc_nvmet_prep_fcp_wqe(struct lpfc_hba *phba,
1663                         struct lpfc_nvmet_rcv_ctx *ctxp)
1664 {
1665         struct nvmefc_tgt_fcp_req *rsp = &ctxp->ctx.fcp_req;
1666         struct lpfc_nvmet_tgtport *tgtp;
1667         struct sli4_sge *sgl;
1668         struct lpfc_nodelist *ndlp;
1669         struct lpfc_iocbq *nvmewqe;
1670         struct scatterlist *sgel;
1671         union lpfc_wqe128 *wqe;
1672         uint32_t *txrdy;
1673         dma_addr_t physaddr;
1674         int i, cnt;
1675         int xc = 1;
1676
1677         if (!lpfc_is_link_up(phba)) {
1678                 lpfc_printf_log(phba, KERN_ERR, LOG_NVME_IOERR,
1679                                 "6107 lpfc_nvmet_prep_fcp_wqe: link err:"
1680                                 "NPORT x%x oxid:x%x\n", ctxp->sid,
1681                                 ctxp->oxid);
1682                 return NULL;
1683         }
1684
1685         ndlp = lpfc_findnode_did(phba->pport, ctxp->sid);
1686         if (!ndlp || !NLP_CHK_NODE_ACT(ndlp) ||
1687             ((ndlp->nlp_state != NLP_STE_UNMAPPED_NODE) &&
1688              (ndlp->nlp_state != NLP_STE_MAPPED_NODE))) {
1689                 lpfc_printf_log(phba, KERN_ERR, LOG_NVME_IOERR,
1690                                 "6108 lpfc_nvmet_prep_fcp_wqe: no ndlp: "
1691                                 "NPORT x%x oxid:x%x\n",
1692                                 ctxp->sid, ctxp->oxid);
1693                 return NULL;
1694         }
1695
1696         if (rsp->sg_cnt > phba->cfg_nvme_seg_cnt) {
1697                 lpfc_printf_log(phba, KERN_ERR, LOG_NVME_IOERR,
1698                                 "6109 lpfc_nvmet_prep_fcp_wqe: seg cnt err: "
1699                                 "NPORT x%x oxid:x%x cnt %d\n",
1700                                 ctxp->sid, ctxp->oxid, phba->cfg_nvme_seg_cnt);
1701                 return NULL;
1702         }
1703
1704         tgtp = (struct lpfc_nvmet_tgtport *)phba->targetport->private;
1705         nvmewqe = ctxp->wqeq;
1706         if (nvmewqe == NULL) {
1707                 /* Allocate buffer for  command wqe */
1708                 nvmewqe = ctxp->ctxbuf->iocbq;
1709                 if (nvmewqe == NULL) {
1710                         lpfc_printf_log(phba, KERN_ERR, LOG_NVME_IOERR,
1711                                         "6110 lpfc_nvmet_prep_fcp_wqe: No "
1712                                         "WQE: NPORT x%x oxid:x%x\n",
1713                                         ctxp->sid, ctxp->oxid);
1714                         return NULL;
1715                 }
1716                 ctxp->wqeq = nvmewqe;
1717                 xc = 0; /* create new XRI */
1718                 nvmewqe->sli4_lxritag = NO_XRI;
1719                 nvmewqe->sli4_xritag = NO_XRI;
1720         }
1721
1722         /* Sanity check */
1723         if (((ctxp->state == LPFC_NVMET_STE_RCV) &&
1724             (ctxp->entry_cnt == 1)) ||
1725             ((ctxp->state == LPFC_NVMET_STE_DATA) &&
1726             (ctxp->entry_cnt > 1))) {
1727                 wqe = (union lpfc_wqe128 *)&nvmewqe->wqe;
1728         } else {
1729                 lpfc_printf_log(phba, KERN_ERR, LOG_NVME_IOERR,
1730                                 "6111 Wrong state %s: %d  cnt %d\n",
1731                                 __func__, ctxp->state, ctxp->entry_cnt);
1732                 return NULL;
1733         }
1734
1735         sgl  = (struct sli4_sge *)ctxp->ctxbuf->sglq->sgl;
1736         switch (rsp->op) {
1737         case NVMET_FCOP_READDATA:
1738         case NVMET_FCOP_READDATA_RSP:
1739                 /* Words 0 - 2 : The first sg segment */
1740                 sgel = &rsp->sg[0];
1741                 physaddr = sg_dma_address(sgel);
1742                 wqe->fcp_tsend.bde.tus.f.bdeFlags = BUFF_TYPE_BDE_64;
1743                 wqe->fcp_tsend.bde.tus.f.bdeSize = sg_dma_len(sgel);
1744                 wqe->fcp_tsend.bde.addrLow = cpu_to_le32(putPaddrLow(physaddr));
1745                 wqe->fcp_tsend.bde.addrHigh =
1746                         cpu_to_le32(putPaddrHigh(physaddr));
1747
1748                 /* Word 3 */
1749                 wqe->fcp_tsend.payload_offset_len = 0;
1750
1751                 /* Word 4 */
1752                 wqe->fcp_tsend.relative_offset = ctxp->offset;
1753
1754                 /* Word 5 */
1755
1756                 /* Word 6 */
1757                 bf_set(wqe_ctxt_tag, &wqe->fcp_tsend.wqe_com,
1758                        phba->sli4_hba.rpi_ids[ndlp->nlp_rpi]);
1759                 bf_set(wqe_xri_tag, &wqe->fcp_tsend.wqe_com,
1760                        nvmewqe->sli4_xritag);
1761
1762                 /* Word 7 */
1763                 bf_set(wqe_cmnd, &wqe->fcp_tsend.wqe_com, CMD_FCP_TSEND64_WQE);
1764
1765                 /* Word 8 */
1766                 wqe->fcp_tsend.wqe_com.abort_tag = nvmewqe->iotag;
1767
1768                 /* Word 9 */
1769                 bf_set(wqe_reqtag, &wqe->fcp_tsend.wqe_com, nvmewqe->iotag);
1770                 bf_set(wqe_rcvoxid, &wqe->fcp_tsend.wqe_com, ctxp->oxid);
1771
1772                 /* Word 10 */
1773                 bf_set(wqe_nvme, &wqe->fcp_tsend.wqe_com, 1);
1774                 bf_set(wqe_dbde, &wqe->fcp_tsend.wqe_com, 1);
1775                 bf_set(wqe_iod, &wqe->fcp_tsend.wqe_com, LPFC_WQE_IOD_WRITE);
1776                 bf_set(wqe_lenloc, &wqe->fcp_tsend.wqe_com,
1777                        LPFC_WQE_LENLOC_WORD12);
1778                 bf_set(wqe_ebde_cnt, &wqe->fcp_tsend.wqe_com, 0);
1779                 bf_set(wqe_xc, &wqe->fcp_tsend.wqe_com, xc);
1780                 bf_set(wqe_nvme, &wqe->fcp_tsend.wqe_com, 1);
1781                 if (phba->cfg_nvme_oas)
1782                         bf_set(wqe_oas, &wqe->fcp_tsend.wqe_com, 1);
1783
1784                 /* Word 11 */
1785                 bf_set(wqe_cqid, &wqe->fcp_tsend.wqe_com,
1786                        LPFC_WQE_CQ_ID_DEFAULT);
1787                 bf_set(wqe_cmd_type, &wqe->fcp_tsend.wqe_com,
1788                        FCP_COMMAND_TSEND);
1789
1790                 /* Word 12 */
1791                 wqe->fcp_tsend.fcp_data_len = rsp->transfer_length;
1792
1793                 /* Setup 2 SKIP SGEs */
1794                 sgl->addr_hi = 0;
1795                 sgl->addr_lo = 0;
1796                 sgl->word2 = 0;
1797                 bf_set(lpfc_sli4_sge_type, sgl, LPFC_SGE_TYPE_SKIP);
1798                 sgl->word2 = cpu_to_le32(sgl->word2);
1799                 sgl->sge_len = 0;
1800                 sgl++;
1801                 sgl->addr_hi = 0;
1802                 sgl->addr_lo = 0;
1803                 sgl->word2 = 0;
1804                 bf_set(lpfc_sli4_sge_type, sgl, LPFC_SGE_TYPE_SKIP);
1805                 sgl->word2 = cpu_to_le32(sgl->word2);
1806                 sgl->sge_len = 0;
1807                 sgl++;
1808                 if (rsp->op == NVMET_FCOP_READDATA_RSP) {
1809                         atomic_inc(&tgtp->xmt_fcp_read_rsp);
1810                         bf_set(wqe_ar, &wqe->fcp_tsend.wqe_com, 1);
1811                         if ((ndlp->nlp_flag & NLP_SUPPRESS_RSP) &&
1812                             (rsp->rsplen == 12)) {
1813                                 bf_set(wqe_sup, &wqe->fcp_tsend.wqe_com, 1);
1814                                 bf_set(wqe_wqes, &wqe->fcp_tsend.wqe_com, 0);
1815                                 bf_set(wqe_irsp, &wqe->fcp_tsend.wqe_com, 0);
1816                                 bf_set(wqe_irsplen, &wqe->fcp_tsend.wqe_com, 0);
1817                         } else {
1818                                 bf_set(wqe_sup, &wqe->fcp_tsend.wqe_com, 0);
1819                                 bf_set(wqe_wqes, &wqe->fcp_tsend.wqe_com, 1);
1820                                 bf_set(wqe_irsp, &wqe->fcp_tsend.wqe_com, 1);
1821                                 bf_set(wqe_irsplen, &wqe->fcp_tsend.wqe_com,
1822                                        ((rsp->rsplen >> 2) - 1));
1823                                 memcpy(&wqe->words[16], rsp->rspaddr,
1824                                        rsp->rsplen);
1825                         }
1826                 } else {
1827                         atomic_inc(&tgtp->xmt_fcp_read);
1828
1829                         bf_set(wqe_sup, &wqe->fcp_tsend.wqe_com, 0);
1830                         bf_set(wqe_wqes, &wqe->fcp_tsend.wqe_com, 0);
1831                         bf_set(wqe_irsp, &wqe->fcp_tsend.wqe_com, 0);
1832                         bf_set(wqe_ar, &wqe->fcp_tsend.wqe_com, 0);
1833                         bf_set(wqe_irsplen, &wqe->fcp_tsend.wqe_com, 0);
1834                 }
1835                 ctxp->state = LPFC_NVMET_STE_DATA;
1836                 break;
1837
1838         case NVMET_FCOP_WRITEDATA:
1839                 /* Words 0 - 2 : The first sg segment */
1840                 txrdy = pci_pool_alloc(phba->txrdy_payload_pool,
1841                                        GFP_KERNEL, &physaddr);
1842                 if (!txrdy) {
1843                         lpfc_printf_log(phba, KERN_ERR, LOG_NVME_IOERR,
1844                                         "6041 Bad txrdy buffer: oxid x%x\n",
1845                                         ctxp->oxid);
1846                         return NULL;
1847                 }
1848                 ctxp->txrdy = txrdy;
1849                 ctxp->txrdy_phys = physaddr;
1850                 wqe->fcp_treceive.bde.tus.f.bdeFlags = BUFF_TYPE_BDE_64;
1851                 wqe->fcp_treceive.bde.tus.f.bdeSize = TXRDY_PAYLOAD_LEN;
1852                 wqe->fcp_treceive.bde.addrLow =
1853                         cpu_to_le32(putPaddrLow(physaddr));
1854                 wqe->fcp_treceive.bde.addrHigh =
1855                         cpu_to_le32(putPaddrHigh(physaddr));
1856
1857                 /* Word 3 */
1858                 wqe->fcp_treceive.payload_offset_len = TXRDY_PAYLOAD_LEN;
1859
1860                 /* Word 4 */
1861                 wqe->fcp_treceive.relative_offset = ctxp->offset;
1862
1863                 /* Word 5 */
1864
1865                 /* Word 6 */
1866                 bf_set(wqe_ctxt_tag, &wqe->fcp_treceive.wqe_com,
1867                        phba->sli4_hba.rpi_ids[ndlp->nlp_rpi]);
1868                 bf_set(wqe_xri_tag, &wqe->fcp_treceive.wqe_com,
1869                        nvmewqe->sli4_xritag);
1870
1871                 /* Word 7 */
1872                 bf_set(wqe_ar, &wqe->fcp_treceive.wqe_com, 0);
1873                 bf_set(wqe_cmnd, &wqe->fcp_treceive.wqe_com,
1874                        CMD_FCP_TRECEIVE64_WQE);
1875
1876                 /* Word 8 */
1877                 wqe->fcp_treceive.wqe_com.abort_tag = nvmewqe->iotag;
1878
1879                 /* Word 9 */
1880                 bf_set(wqe_reqtag, &wqe->fcp_treceive.wqe_com, nvmewqe->iotag);
1881                 bf_set(wqe_rcvoxid, &wqe->fcp_treceive.wqe_com, ctxp->oxid);
1882
1883                 /* Word 10 */
1884                 bf_set(wqe_nvme, &wqe->fcp_treceive.wqe_com, 1);
1885                 bf_set(wqe_dbde, &wqe->fcp_treceive.wqe_com, 1);
1886                 bf_set(wqe_iod, &wqe->fcp_treceive.wqe_com, LPFC_WQE_IOD_READ);
1887                 bf_set(wqe_lenloc, &wqe->fcp_treceive.wqe_com,
1888                        LPFC_WQE_LENLOC_WORD12);
1889                 bf_set(wqe_xc, &wqe->fcp_treceive.wqe_com, xc);
1890                 bf_set(wqe_wqes, &wqe->fcp_treceive.wqe_com, 0);
1891                 bf_set(wqe_irsp, &wqe->fcp_treceive.wqe_com, 0);
1892                 bf_set(wqe_irsplen, &wqe->fcp_treceive.wqe_com, 0);
1893                 bf_set(wqe_nvme, &wqe->fcp_treceive.wqe_com, 1);
1894                 if (phba->cfg_nvme_oas)
1895                         bf_set(wqe_oas, &wqe->fcp_treceive.wqe_com, 1);
1896
1897                 /* Word 11 */
1898                 bf_set(wqe_cqid, &wqe->fcp_treceive.wqe_com,
1899                        LPFC_WQE_CQ_ID_DEFAULT);
1900                 bf_set(wqe_cmd_type, &wqe->fcp_treceive.wqe_com,
1901                        FCP_COMMAND_TRECEIVE);
1902                 bf_set(wqe_sup, &wqe->fcp_tsend.wqe_com, 0);
1903
1904                 /* Word 12 */
1905                 wqe->fcp_tsend.fcp_data_len = rsp->transfer_length;
1906
1907                 /* Setup 1 TXRDY and 1 SKIP SGE */
1908                 txrdy[0] = 0;
1909                 txrdy[1] = cpu_to_be32(rsp->transfer_length);
1910                 txrdy[2] = 0;
1911
1912                 sgl->addr_hi = putPaddrHigh(physaddr);
1913                 sgl->addr_lo = putPaddrLow(physaddr);
1914                 sgl->word2 = 0;
1915                 bf_set(lpfc_sli4_sge_type, sgl, LPFC_SGE_TYPE_DATA);
1916                 sgl->word2 = cpu_to_le32(sgl->word2);
1917                 sgl->sge_len = cpu_to_le32(TXRDY_PAYLOAD_LEN);
1918                 sgl++;
1919                 sgl->addr_hi = 0;
1920                 sgl->addr_lo = 0;
1921                 sgl->word2 = 0;
1922                 bf_set(lpfc_sli4_sge_type, sgl, LPFC_SGE_TYPE_SKIP);
1923                 sgl->word2 = cpu_to_le32(sgl->word2);
1924                 sgl->sge_len = 0;
1925                 sgl++;
1926                 ctxp->state = LPFC_NVMET_STE_DATA;
1927                 atomic_inc(&tgtp->xmt_fcp_write);
1928                 break;
1929
1930         case NVMET_FCOP_RSP:
1931                 /* Words 0 - 2 */
1932                 physaddr = rsp->rspdma;
1933                 wqe->fcp_trsp.bde.tus.f.bdeFlags = BUFF_TYPE_BDE_64;
1934                 wqe->fcp_trsp.bde.tus.f.bdeSize = rsp->rsplen;
1935                 wqe->fcp_trsp.bde.addrLow =
1936                         cpu_to_le32(putPaddrLow(physaddr));
1937                 wqe->fcp_trsp.bde.addrHigh =
1938                         cpu_to_le32(putPaddrHigh(physaddr));
1939
1940                 /* Word 3 */
1941                 wqe->fcp_trsp.response_len = rsp->rsplen;
1942
1943                 /* Word 4 */
1944                 wqe->fcp_trsp.rsvd_4_5[0] = 0;
1945
1946
1947                 /* Word 5 */
1948
1949                 /* Word 6 */
1950                 bf_set(wqe_ctxt_tag, &wqe->fcp_trsp.wqe_com,
1951                        phba->sli4_hba.rpi_ids[ndlp->nlp_rpi]);
1952                 bf_set(wqe_xri_tag, &wqe->fcp_trsp.wqe_com,
1953                        nvmewqe->sli4_xritag);
1954
1955                 /* Word 7 */
1956                 bf_set(wqe_ag, &wqe->fcp_trsp.wqe_com, 1);
1957                 bf_set(wqe_cmnd, &wqe->fcp_trsp.wqe_com, CMD_FCP_TRSP64_WQE);
1958
1959                 /* Word 8 */
1960                 wqe->fcp_trsp.wqe_com.abort_tag = nvmewqe->iotag;
1961
1962                 /* Word 9 */
1963                 bf_set(wqe_reqtag, &wqe->fcp_trsp.wqe_com, nvmewqe->iotag);
1964                 bf_set(wqe_rcvoxid, &wqe->fcp_trsp.wqe_com, ctxp->oxid);
1965
1966                 /* Word 10 */
1967                 bf_set(wqe_nvme, &wqe->fcp_trsp.wqe_com, 1);
1968                 bf_set(wqe_dbde, &wqe->fcp_trsp.wqe_com, 0);
1969                 bf_set(wqe_iod, &wqe->fcp_trsp.wqe_com, LPFC_WQE_IOD_WRITE);
1970                 bf_set(wqe_lenloc, &wqe->fcp_trsp.wqe_com,
1971                        LPFC_WQE_LENLOC_WORD3);
1972                 bf_set(wqe_xc, &wqe->fcp_trsp.wqe_com, xc);
1973                 bf_set(wqe_nvme, &wqe->fcp_trsp.wqe_com, 1);
1974                 if (phba->cfg_nvme_oas)
1975                         bf_set(wqe_oas, &wqe->fcp_trsp.wqe_com, 1);
1976
1977                 /* Word 11 */
1978                 bf_set(wqe_cqid, &wqe->fcp_trsp.wqe_com,
1979                        LPFC_WQE_CQ_ID_DEFAULT);
1980                 bf_set(wqe_cmd_type, &wqe->fcp_trsp.wqe_com,
1981                        FCP_COMMAND_TRSP);
1982                 bf_set(wqe_sup, &wqe->fcp_tsend.wqe_com, 0);
1983                 ctxp->state = LPFC_NVMET_STE_RSP;
1984
1985                 if (rsp->rsplen == LPFC_NVMET_SUCCESS_LEN) {
1986                         /* Good response - all zero's on wire */
1987                         bf_set(wqe_wqes, &wqe->fcp_trsp.wqe_com, 0);
1988                         bf_set(wqe_irsp, &wqe->fcp_trsp.wqe_com, 0);
1989                         bf_set(wqe_irsplen, &wqe->fcp_trsp.wqe_com, 0);
1990                 } else {
1991                         bf_set(wqe_wqes, &wqe->fcp_trsp.wqe_com, 1);
1992                         bf_set(wqe_irsp, &wqe->fcp_trsp.wqe_com, 1);
1993                         bf_set(wqe_irsplen, &wqe->fcp_trsp.wqe_com,
1994                                ((rsp->rsplen >> 2) - 1));
1995                         memcpy(&wqe->words[16], rsp->rspaddr, rsp->rsplen);
1996                 }
1997
1998                 /* Use rspbuf, NOT sg list */
1999                 rsp->sg_cnt = 0;
2000                 sgl->word2 = 0;
2001                 atomic_inc(&tgtp->xmt_fcp_rsp);
2002                 break;
2003
2004         default:
2005                 lpfc_printf_log(phba, KERN_INFO, LOG_NVME_IOERR,
2006                                 "6064 Unknown Rsp Op %d\n",
2007                                 rsp->op);
2008                 return NULL;
2009         }
2010
2011         nvmewqe->retry = 1;
2012         nvmewqe->vport = phba->pport;
2013         nvmewqe->drvrTimeout = (phba->fc_ratov * 3) + LPFC_DRVR_TIMEOUT;
2014         nvmewqe->context1 = ndlp;
2015
2016         for (i = 0; i < rsp->sg_cnt; i++) {
2017                 sgel = &rsp->sg[i];
2018                 physaddr = sg_dma_address(sgel);
2019                 cnt = sg_dma_len(sgel);
2020                 sgl->addr_hi = putPaddrHigh(physaddr);
2021                 sgl->addr_lo = putPaddrLow(physaddr);
2022                 sgl->word2 = 0;
2023                 bf_set(lpfc_sli4_sge_type, sgl, LPFC_SGE_TYPE_DATA);
2024                 bf_set(lpfc_sli4_sge_offset, sgl, ctxp->offset);
2025                 if ((i+1) == rsp->sg_cnt)
2026                         bf_set(lpfc_sli4_sge_last, sgl, 1);
2027                 sgl->word2 = cpu_to_le32(sgl->word2);
2028                 sgl->sge_len = cpu_to_le32(cnt);
2029                 sgl++;
2030                 ctxp->offset += cnt;
2031         }
2032         return nvmewqe;
2033 }
2034
2035 /**
2036  * lpfc_nvmet_sol_fcp_abort_cmp - Completion handler for ABTS
2037  * @phba: Pointer to HBA context object.
2038  * @cmdwqe: Pointer to driver command WQE object.
2039  * @wcqe: Pointer to driver response CQE object.
2040  *
2041  * The function is called from SLI ring event handler with no
2042  * lock held. This function is the completion handler for NVME ABTS for FCP cmds
2043  * The function frees memory resources used for the NVME commands.
2044  **/
2045 static void
2046 lpfc_nvmet_sol_fcp_abort_cmp(struct lpfc_hba *phba, struct lpfc_iocbq *cmdwqe,
2047                              struct lpfc_wcqe_complete *wcqe)
2048 {
2049         struct lpfc_nvmet_rcv_ctx *ctxp;
2050         struct lpfc_nvmet_tgtport *tgtp;
2051         uint32_t status, result;
2052         unsigned long flags;
2053         bool released = false;
2054
2055         ctxp = cmdwqe->context2;
2056         status = bf_get(lpfc_wcqe_c_status, wcqe);
2057         result = wcqe->parameter;
2058
2059         tgtp = (struct lpfc_nvmet_tgtport *)phba->targetport->private;
2060         if (ctxp->flag & LPFC_NVMET_ABORT_OP)
2061                 atomic_inc(&tgtp->xmt_fcp_abort_cmpl);
2062
2063         ctxp->state = LPFC_NVMET_STE_DONE;
2064
2065         /* Check if we already received a free context call
2066          * and we have completed processing an abort situation.
2067          */
2068         spin_lock_irqsave(&ctxp->ctxlock, flags);
2069         if ((ctxp->flag & LPFC_NVMET_CTX_RLS) &&
2070             !(ctxp->flag & LPFC_NVMET_XBUSY)) {
2071                 list_del(&ctxp->list);
2072                 released = true;
2073         }
2074         ctxp->flag &= ~LPFC_NVMET_ABORT_OP;
2075         spin_unlock_irqrestore(&ctxp->ctxlock, flags);
2076         atomic_inc(&tgtp->xmt_abort_rsp);
2077
2078         lpfc_printf_log(phba, KERN_ERR, LOG_NVME_ABTS,
2079                         "6165 ABORT cmpl: xri x%x flg x%x (%d) "
2080                         "WCQE: %08x %08x %08x %08x\n",
2081                         ctxp->oxid, ctxp->flag, released,
2082                         wcqe->word0, wcqe->total_data_placed,
2083                         result, wcqe->word3);
2084
2085         cmdwqe->context2 = NULL;
2086         cmdwqe->context3 = NULL;
2087         /*
2088          * if transport has released ctx, then can reuse it. Otherwise,
2089          * will be recycled by transport release call.
2090          */
2091         if (released)
2092                 lpfc_nvmet_ctxbuf_post(phba, ctxp->ctxbuf);
2093
2094         /* This is the iocbq for the abort, not the command */
2095         lpfc_sli_release_iocbq(phba, cmdwqe);
2096
2097         /* Since iaab/iaar are NOT set, there is no work left.
2098          * For LPFC_NVMET_XBUSY, lpfc_sli4_nvmet_xri_aborted
2099          * should have been called already.
2100          */
2101 }
2102
2103 /**
2104  * lpfc_nvmet_unsol_fcp_abort_cmp - Completion handler for ABTS
2105  * @phba: Pointer to HBA context object.
2106  * @cmdwqe: Pointer to driver command WQE object.
2107  * @wcqe: Pointer to driver response CQE object.
2108  *
2109  * The function is called from SLI ring event handler with no
2110  * lock held. This function is the completion handler for NVME ABTS for FCP cmds
2111  * The function frees memory resources used for the NVME commands.
2112  **/
2113 static void
2114 lpfc_nvmet_unsol_fcp_abort_cmp(struct lpfc_hba *phba, struct lpfc_iocbq *cmdwqe,
2115                                struct lpfc_wcqe_complete *wcqe)
2116 {
2117         struct lpfc_nvmet_rcv_ctx *ctxp;
2118         struct lpfc_nvmet_tgtport *tgtp;
2119         unsigned long flags;
2120         uint32_t status, result;
2121         bool released = false;
2122
2123         ctxp = cmdwqe->context2;
2124         status = bf_get(lpfc_wcqe_c_status, wcqe);
2125         result = wcqe->parameter;
2126
2127         tgtp = (struct lpfc_nvmet_tgtport *)phba->targetport->private;
2128         if (ctxp->flag & LPFC_NVMET_ABORT_OP)
2129                 atomic_inc(&tgtp->xmt_fcp_abort_cmpl);
2130
2131         if (!ctxp) {
2132                 /* if context is clear, related io alrady complete */
2133                 lpfc_printf_log(phba, KERN_INFO, LOG_NVME_ABTS,
2134                                 "6070 ABTS cmpl: WCQE: %08x %08x %08x %08x\n",
2135                                 wcqe->word0, wcqe->total_data_placed,
2136                                 result, wcqe->word3);
2137                 return;
2138         }
2139
2140         /* Sanity check */
2141         if (ctxp->state != LPFC_NVMET_STE_ABORT) {
2142                 lpfc_printf_log(phba, KERN_ERR, LOG_NVME_ABTS,
2143                                 "6112 ABTS Wrong state:%d oxid x%x\n",
2144                                 ctxp->state, ctxp->oxid);
2145         }
2146
2147         /* Check if we already received a free context call
2148          * and we have completed processing an abort situation.
2149          */
2150         ctxp->state = LPFC_NVMET_STE_DONE;
2151         spin_lock_irqsave(&ctxp->ctxlock, flags);
2152         if ((ctxp->flag & LPFC_NVMET_CTX_RLS) &&
2153             !(ctxp->flag & LPFC_NVMET_XBUSY)) {
2154                 list_del(&ctxp->list);
2155                 released = true;
2156         }
2157         ctxp->flag &= ~LPFC_NVMET_ABORT_OP;
2158         spin_unlock_irqrestore(&ctxp->ctxlock, flags);
2159         atomic_inc(&tgtp->xmt_abort_rsp);
2160
2161         lpfc_printf_log(phba, KERN_INFO, LOG_NVME_ABTS,
2162                         "6316 ABTS cmpl xri x%x flg x%x (%x) "
2163                         "WCQE: %08x %08x %08x %08x\n",
2164                         ctxp->oxid, ctxp->flag, released,
2165                         wcqe->word0, wcqe->total_data_placed,
2166                         result, wcqe->word3);
2167
2168         cmdwqe->context2 = NULL;
2169         cmdwqe->context3 = NULL;
2170         /*
2171          * if transport has released ctx, then can reuse it. Otherwise,
2172          * will be recycled by transport release call.
2173          */
2174         if (released)
2175                 lpfc_nvmet_ctxbuf_post(phba, ctxp->ctxbuf);
2176
2177         /* Since iaab/iaar are NOT set, there is no work left.
2178          * For LPFC_NVMET_XBUSY, lpfc_sli4_nvmet_xri_aborted
2179          * should have been called already.
2180          */
2181 }
2182
2183 /**
2184  * lpfc_nvmet_xmt_ls_abort_cmp - Completion handler for ABTS
2185  * @phba: Pointer to HBA context object.
2186  * @cmdwqe: Pointer to driver command WQE object.
2187  * @wcqe: Pointer to driver response CQE object.
2188  *
2189  * The function is called from SLI ring event handler with no
2190  * lock held. This function is the completion handler for NVME ABTS for LS cmds
2191  * The function frees memory resources used for the NVME commands.
2192  **/
2193 static void
2194 lpfc_nvmet_xmt_ls_abort_cmp(struct lpfc_hba *phba, struct lpfc_iocbq *cmdwqe,
2195                             struct lpfc_wcqe_complete *wcqe)
2196 {
2197         struct lpfc_nvmet_rcv_ctx *ctxp;
2198         struct lpfc_nvmet_tgtport *tgtp;
2199         uint32_t status, result;
2200
2201         ctxp = cmdwqe->context2;
2202         status = bf_get(lpfc_wcqe_c_status, wcqe);
2203         result = wcqe->parameter;
2204
2205         tgtp = (struct lpfc_nvmet_tgtport *)phba->targetport->private;
2206         atomic_inc(&tgtp->xmt_ls_abort_cmpl);
2207
2208         lpfc_printf_log(phba, KERN_INFO, LOG_NVME_ABTS,
2209                         "6083 Abort cmpl: ctx %p WCQE: %08x %08x %08x %08x\n",
2210                         ctxp, wcqe->word0, wcqe->total_data_placed,
2211                         result, wcqe->word3);
2212
2213         if (ctxp) {
2214                 cmdwqe->context2 = NULL;
2215                 cmdwqe->context3 = NULL;
2216                 lpfc_sli_release_iocbq(phba, cmdwqe);
2217                 kfree(ctxp);
2218         } else
2219                 lpfc_sli_release_iocbq(phba, cmdwqe);
2220 }
2221
2222 static int
2223 lpfc_nvmet_unsol_issue_abort(struct lpfc_hba *phba,
2224                              struct lpfc_nvmet_rcv_ctx *ctxp,
2225                              uint32_t sid, uint16_t xri)
2226 {
2227         struct lpfc_nvmet_tgtport *tgtp;
2228         struct lpfc_iocbq *abts_wqeq;
2229         union lpfc_wqe *wqe_abts;
2230         struct lpfc_nodelist *ndlp;
2231
2232         lpfc_printf_log(phba, KERN_INFO, LOG_NVME_ABTS,
2233                         "6067 ABTS: sid %x xri x%x/x%x\n",
2234                         sid, xri, ctxp->wqeq->sli4_xritag);
2235
2236         tgtp = (struct lpfc_nvmet_tgtport *)phba->targetport->private;
2237
2238         ndlp = lpfc_findnode_did(phba->pport, sid);
2239         if (!ndlp || !NLP_CHK_NODE_ACT(ndlp) ||
2240             ((ndlp->nlp_state != NLP_STE_UNMAPPED_NODE) &&
2241             (ndlp->nlp_state != NLP_STE_MAPPED_NODE))) {
2242                 atomic_inc(&tgtp->xmt_abort_rsp_error);
2243                 lpfc_printf_log(phba, KERN_WARNING, LOG_NVME_ABTS,
2244                                 "6134 Drop ABTS - wrong NDLP state x%x.\n",
2245                                 (ndlp) ? ndlp->nlp_state : NLP_STE_MAX_STATE);
2246
2247                 /* No failure to an ABTS request. */
2248                 return 0;
2249         }
2250
2251         abts_wqeq = ctxp->wqeq;
2252         wqe_abts = &abts_wqeq->wqe;
2253         ctxp->state = LPFC_NVMET_STE_ABORT;
2254
2255         /*
2256          * Since we zero the whole WQE, we need to ensure we set the WQE fields
2257          * that were initialized in lpfc_sli4_nvmet_alloc.
2258          */
2259         memset(wqe_abts, 0, sizeof(union lpfc_wqe));
2260
2261         /* Word 5 */
2262         bf_set(wqe_dfctl, &wqe_abts->xmit_sequence.wge_ctl, 0);
2263         bf_set(wqe_ls, &wqe_abts->xmit_sequence.wge_ctl, 1);
2264         bf_set(wqe_la, &wqe_abts->xmit_sequence.wge_ctl, 0);
2265         bf_set(wqe_rctl, &wqe_abts->xmit_sequence.wge_ctl, FC_RCTL_BA_ABTS);
2266         bf_set(wqe_type, &wqe_abts->xmit_sequence.wge_ctl, FC_TYPE_BLS);
2267
2268         /* Word 6 */
2269         bf_set(wqe_ctxt_tag, &wqe_abts->xmit_sequence.wqe_com,
2270                phba->sli4_hba.rpi_ids[ndlp->nlp_rpi]);
2271         bf_set(wqe_xri_tag, &wqe_abts->xmit_sequence.wqe_com,
2272                abts_wqeq->sli4_xritag);
2273
2274         /* Word 7 */
2275         bf_set(wqe_cmnd, &wqe_abts->xmit_sequence.wqe_com,
2276                CMD_XMIT_SEQUENCE64_WQE);
2277         bf_set(wqe_ct, &wqe_abts->xmit_sequence.wqe_com, SLI4_CT_RPI);
2278         bf_set(wqe_class, &wqe_abts->xmit_sequence.wqe_com, CLASS3);
2279         bf_set(wqe_pu, &wqe_abts->xmit_sequence.wqe_com, 0);
2280
2281         /* Word 8 */
2282         wqe_abts->xmit_sequence.wqe_com.abort_tag = abts_wqeq->iotag;
2283
2284         /* Word 9 */
2285         bf_set(wqe_reqtag, &wqe_abts->xmit_sequence.wqe_com, abts_wqeq->iotag);
2286         /* Needs to be set by caller */
2287         bf_set(wqe_rcvoxid, &wqe_abts->xmit_sequence.wqe_com, xri);
2288
2289         /* Word 10 */
2290         bf_set(wqe_dbde, &wqe_abts->xmit_sequence.wqe_com, 1);
2291         bf_set(wqe_iod, &wqe_abts->xmit_sequence.wqe_com, LPFC_WQE_IOD_WRITE);
2292         bf_set(wqe_lenloc, &wqe_abts->xmit_sequence.wqe_com,
2293                LPFC_WQE_LENLOC_WORD12);
2294         bf_set(wqe_ebde_cnt, &wqe_abts->xmit_sequence.wqe_com, 0);
2295         bf_set(wqe_qosd, &wqe_abts->xmit_sequence.wqe_com, 0);
2296
2297         /* Word 11 */
2298         bf_set(wqe_cqid, &wqe_abts->xmit_sequence.wqe_com,
2299                LPFC_WQE_CQ_ID_DEFAULT);
2300         bf_set(wqe_cmd_type, &wqe_abts->xmit_sequence.wqe_com,
2301                OTHER_COMMAND);
2302
2303         abts_wqeq->vport = phba->pport;
2304         abts_wqeq->context1 = ndlp;
2305         abts_wqeq->context2 = ctxp;
2306         abts_wqeq->context3 = NULL;
2307         abts_wqeq->rsvd2 = 0;
2308         /* hba_wqidx should already be setup from command we are aborting */
2309         abts_wqeq->iocb.ulpCommand = CMD_XMIT_SEQUENCE64_CR;
2310         abts_wqeq->iocb.ulpLe = 1;
2311
2312         lpfc_printf_log(phba, KERN_INFO, LOG_NVME_ABTS,
2313                         "6069 Issue ABTS to xri x%x reqtag x%x\n",
2314                         xri, abts_wqeq->iotag);
2315         return 1;
2316 }
2317
2318 static int
2319 lpfc_nvmet_sol_fcp_issue_abort(struct lpfc_hba *phba,
2320                                struct lpfc_nvmet_rcv_ctx *ctxp,
2321                                uint32_t sid, uint16_t xri)
2322 {
2323         struct lpfc_nvmet_tgtport *tgtp;
2324         struct lpfc_iocbq *abts_wqeq;
2325         union lpfc_wqe *abts_wqe;
2326         struct lpfc_nodelist *ndlp;
2327         unsigned long flags;
2328         int rc;
2329
2330         tgtp = (struct lpfc_nvmet_tgtport *)phba->targetport->private;
2331         if (!ctxp->wqeq) {
2332                 ctxp->wqeq = ctxp->ctxbuf->iocbq;
2333                 ctxp->wqeq->hba_wqidx = 0;
2334         }
2335
2336         ndlp = lpfc_findnode_did(phba->pport, sid);
2337         if (!ndlp || !NLP_CHK_NODE_ACT(ndlp) ||
2338             ((ndlp->nlp_state != NLP_STE_UNMAPPED_NODE) &&
2339             (ndlp->nlp_state != NLP_STE_MAPPED_NODE))) {
2340                 atomic_inc(&tgtp->xmt_abort_rsp_error);
2341                 lpfc_printf_log(phba, KERN_WARNING, LOG_NVME_ABTS,
2342                                 "6160 Drop ABORT - wrong NDLP state x%x.\n",
2343                                 (ndlp) ? ndlp->nlp_state : NLP_STE_MAX_STATE);
2344
2345                 /* No failure to an ABTS request. */
2346                 ctxp->flag &= ~LPFC_NVMET_ABORT_OP;
2347                 return 0;
2348         }
2349
2350         /* Issue ABTS for this WQE based on iotag */
2351         ctxp->abort_wqeq = lpfc_sli_get_iocbq(phba);
2352         if (!ctxp->abort_wqeq) {
2353                 atomic_inc(&tgtp->xmt_abort_rsp_error);
2354                 lpfc_printf_log(phba, KERN_WARNING, LOG_NVME_ABTS,
2355                                 "6161 ABORT failed: No wqeqs: "
2356                                 "xri: x%x\n", ctxp->oxid);
2357                 /* No failure to an ABTS request. */
2358                 ctxp->flag &= ~LPFC_NVMET_ABORT_OP;
2359                 return 0;
2360         }
2361         abts_wqeq = ctxp->abort_wqeq;
2362         abts_wqe = &abts_wqeq->wqe;
2363         ctxp->state = LPFC_NVMET_STE_ABORT;
2364
2365         /* Announce entry to new IO submit field. */
2366         lpfc_printf_log(phba, KERN_INFO, LOG_NVME_ABTS,
2367                         "6162 ABORT Request to rport DID x%06x "
2368                         "for xri x%x x%x\n",
2369                         ctxp->sid, ctxp->oxid, ctxp->wqeq->sli4_xritag);
2370
2371         /* If the hba is getting reset, this flag is set.  It is
2372          * cleared when the reset is complete and rings reestablished.
2373          */
2374         spin_lock_irqsave(&phba->hbalock, flags);
2375         /* driver queued commands are in process of being flushed */
2376         if (phba->hba_flag & HBA_NVME_IOQ_FLUSH) {
2377                 spin_unlock_irqrestore(&phba->hbalock, flags);
2378                 atomic_inc(&tgtp->xmt_abort_rsp_error);
2379                 lpfc_printf_log(phba, KERN_ERR, LOG_NVME,
2380                                 "6163 Driver in reset cleanup - flushing "
2381                                 "NVME Req now. hba_flag x%x oxid x%x\n",
2382                                 phba->hba_flag, ctxp->oxid);
2383                 lpfc_sli_release_iocbq(phba, abts_wqeq);
2384                 ctxp->flag &= ~LPFC_NVMET_ABORT_OP;
2385                 return 0;
2386         }
2387
2388         /* Outstanding abort is in progress */
2389         if (abts_wqeq->iocb_flag & LPFC_DRIVER_ABORTED) {
2390                 spin_unlock_irqrestore(&phba->hbalock, flags);
2391                 atomic_inc(&tgtp->xmt_abort_rsp_error);
2392                 lpfc_printf_log(phba, KERN_ERR, LOG_NVME,
2393                                 "6164 Outstanding NVME I/O Abort Request "
2394                                 "still pending on oxid x%x\n",
2395                                 ctxp->oxid);
2396                 lpfc_sli_release_iocbq(phba, abts_wqeq);
2397                 ctxp->flag &= ~LPFC_NVMET_ABORT_OP;
2398                 return 0;
2399         }
2400
2401         /* Ready - mark outstanding as aborted by driver. */
2402         abts_wqeq->iocb_flag |= LPFC_DRIVER_ABORTED;
2403
2404         /* WQEs are reused.  Clear stale data and set key fields to
2405          * zero like ia, iaab, iaar, xri_tag, and ctxt_tag.
2406          */
2407         memset(abts_wqe, 0, sizeof(union lpfc_wqe));
2408
2409         /* word 3 */
2410         bf_set(abort_cmd_criteria, &abts_wqe->abort_cmd, T_XRI_TAG);
2411
2412         /* word 7 */
2413         bf_set(wqe_ct, &abts_wqe->abort_cmd.wqe_com, 0);
2414         bf_set(wqe_cmnd, &abts_wqe->abort_cmd.wqe_com, CMD_ABORT_XRI_CX);
2415
2416         /* word 8 - tell the FW to abort the IO associated with this
2417          * outstanding exchange ID.
2418          */
2419         abts_wqe->abort_cmd.wqe_com.abort_tag = ctxp->wqeq->sli4_xritag;
2420
2421         /* word 9 - this is the iotag for the abts_wqe completion. */
2422         bf_set(wqe_reqtag, &abts_wqe->abort_cmd.wqe_com,
2423                abts_wqeq->iotag);
2424
2425         /* word 10 */
2426         bf_set(wqe_qosd, &abts_wqe->abort_cmd.wqe_com, 1);
2427         bf_set(wqe_lenloc, &abts_wqe->abort_cmd.wqe_com, LPFC_WQE_LENLOC_NONE);
2428
2429         /* word 11 */
2430         bf_set(wqe_cmd_type, &abts_wqe->abort_cmd.wqe_com, OTHER_COMMAND);
2431         bf_set(wqe_wqec, &abts_wqe->abort_cmd.wqe_com, 1);
2432         bf_set(wqe_cqid, &abts_wqe->abort_cmd.wqe_com, LPFC_WQE_CQ_ID_DEFAULT);
2433
2434         /* ABTS WQE must go to the same WQ as the WQE to be aborted */
2435         abts_wqeq->hba_wqidx = ctxp->wqeq->hba_wqidx;
2436         abts_wqeq->wqe_cmpl = lpfc_nvmet_sol_fcp_abort_cmp;
2437         abts_wqeq->iocb_cmpl = 0;
2438         abts_wqeq->iocb_flag |= LPFC_IO_NVME;
2439         abts_wqeq->context2 = ctxp;
2440         rc = lpfc_sli4_issue_wqe(phba, LPFC_FCP_RING, abts_wqeq);
2441         spin_unlock_irqrestore(&phba->hbalock, flags);
2442         if (rc == WQE_SUCCESS) {
2443                 atomic_inc(&tgtp->xmt_abort_sol);
2444                 return 0;
2445         }
2446
2447         atomic_inc(&tgtp->xmt_abort_rsp_error);
2448         ctxp->flag &= ~LPFC_NVMET_ABORT_OP;
2449         lpfc_sli_release_iocbq(phba, abts_wqeq);
2450         lpfc_printf_log(phba, KERN_ERR, LOG_NVME_ABTS,
2451                         "6166 Failed ABORT issue_wqe with status x%x "
2452                         "for oxid x%x.\n",
2453                         rc, ctxp->oxid);
2454         return 1;
2455 }
2456
2457
2458 static int
2459 lpfc_nvmet_unsol_fcp_issue_abort(struct lpfc_hba *phba,
2460                                  struct lpfc_nvmet_rcv_ctx *ctxp,
2461                                  uint32_t sid, uint16_t xri)
2462 {
2463         struct lpfc_nvmet_tgtport *tgtp;
2464         struct lpfc_iocbq *abts_wqeq;
2465         unsigned long flags;
2466         int rc;
2467
2468         tgtp = (struct lpfc_nvmet_tgtport *)phba->targetport->private;
2469         if (!ctxp->wqeq) {
2470                 ctxp->wqeq = ctxp->ctxbuf->iocbq;
2471                 ctxp->wqeq->hba_wqidx = 0;
2472         }
2473
2474         rc = lpfc_nvmet_unsol_issue_abort(phba, ctxp, sid, xri);
2475         if (rc == 0)
2476                 goto aerr;
2477
2478         spin_lock_irqsave(&phba->hbalock, flags);
2479         abts_wqeq = ctxp->wqeq;
2480         abts_wqeq->wqe_cmpl = lpfc_nvmet_unsol_fcp_abort_cmp;
2481         abts_wqeq->iocb_cmpl = NULL;
2482         abts_wqeq->iocb_flag |= LPFC_IO_NVMET;
2483         rc = lpfc_sli4_issue_wqe(phba, LPFC_FCP_RING, abts_wqeq);
2484         spin_unlock_irqrestore(&phba->hbalock, flags);
2485         if (rc == WQE_SUCCESS) {
2486                 return 0;
2487         }
2488
2489 aerr:
2490         atomic_inc(&tgtp->xmt_abort_rsp_error);
2491         ctxp->flag &= ~LPFC_NVMET_ABORT_OP;
2492         atomic_inc(&tgtp->xmt_abort_rsp_error);
2493         lpfc_printf_log(phba, KERN_WARNING, LOG_NVME_ABTS,
2494                         "6135 Failed to Issue ABTS for oxid x%x. Status x%x\n",
2495                         ctxp->oxid, rc);
2496         return 1;
2497 }
2498
2499 static int
2500 lpfc_nvmet_unsol_ls_issue_abort(struct lpfc_hba *phba,
2501                                 struct lpfc_nvmet_rcv_ctx *ctxp,
2502                                 uint32_t sid, uint16_t xri)
2503 {
2504         struct lpfc_nvmet_tgtport *tgtp;
2505         struct lpfc_iocbq *abts_wqeq;
2506         union lpfc_wqe *wqe_abts;
2507         unsigned long flags;
2508         int rc;
2509
2510         tgtp = (struct lpfc_nvmet_tgtport *)phba->targetport->private;
2511         if (!ctxp->wqeq) {
2512                 /* Issue ABTS for this WQE based on iotag */
2513                 ctxp->wqeq = lpfc_sli_get_iocbq(phba);
2514                 if (!ctxp->wqeq) {
2515                         lpfc_printf_log(phba, KERN_WARNING, LOG_NVME_ABTS,
2516                                         "6068 Abort failed: No wqeqs: "
2517                                         "xri: x%x\n", xri);
2518                         /* No failure to an ABTS request. */
2519                         kfree(ctxp);
2520                         return 0;
2521                 }
2522         }
2523         abts_wqeq = ctxp->wqeq;
2524         wqe_abts = &abts_wqeq->wqe;
2525
2526         lpfc_nvmet_unsol_issue_abort(phba, ctxp, sid, xri);
2527
2528         spin_lock_irqsave(&phba->hbalock, flags);
2529         abts_wqeq->wqe_cmpl = lpfc_nvmet_xmt_ls_abort_cmp;
2530         abts_wqeq->iocb_cmpl = 0;
2531         abts_wqeq->iocb_flag |=  LPFC_IO_NVME_LS;
2532         rc = lpfc_sli4_issue_wqe(phba, LPFC_ELS_RING, abts_wqeq);
2533         spin_unlock_irqrestore(&phba->hbalock, flags);
2534         if (rc == WQE_SUCCESS) {
2535                 atomic_inc(&tgtp->xmt_abort_unsol);
2536                 return 0;
2537         }
2538
2539         atomic_inc(&tgtp->xmt_abort_rsp_error);
2540         abts_wqeq->context2 = NULL;
2541         abts_wqeq->context3 = NULL;
2542         lpfc_sli_release_iocbq(phba, abts_wqeq);
2543         kfree(ctxp);
2544         lpfc_printf_log(phba, KERN_WARNING, LOG_NVME_ABTS,
2545                         "6056 Failed to Issue ABTS. Status x%x\n", rc);
2546         return 0;
2547 }