1 // SPDX-License-Identifier: GPL-2.0-only
2 /*
3 * QLogic Fibre Channel HBA Driver
4 * Copyright (c) 2003-2017 QLogic Corporation
5 */
6 #include "qla_nvme.h"
7 #include <linux/scatterlist.h>
8 #include <linux/delay.h>
9 #include <linux/nvme.h>
10 #include <linux/nvme-fc.h>
11
12 static struct nvme_fc_port_template qla_nvme_fc_transport;
13
qla_nvme_register_remote(struct scsi_qla_host * vha,struct fc_port * fcport)14 int qla_nvme_register_remote(struct scsi_qla_host *vha, struct fc_port *fcport)
15 {
16 struct qla_nvme_rport *rport;
17 struct nvme_fc_port_info req;
18 int ret;
19
20 if (!IS_ENABLED(CONFIG_NVME_FC))
21 return 0;
22
23 if (!vha->flags.nvme_enabled) {
24 ql_log(ql_log_info, vha, 0x2100,
25 "%s: Not registering target since Host NVME is not enabled\n",
26 __func__);
27 return 0;
28 }
29
30 if (!vha->nvme_local_port && qla_nvme_register_hba(vha))
31 return 0;
32
33 if (!(fcport->nvme_prli_service_param &
34 (NVME_PRLI_SP_TARGET | NVME_PRLI_SP_DISCOVERY)) ||
35 (fcport->nvme_flag & NVME_FLAG_REGISTERED))
36 return 0;
37
38 fcport->nvme_flag &= ~NVME_FLAG_RESETTING;
39
40 memset(&req, 0, sizeof(struct nvme_fc_port_info));
41 req.port_name = wwn_to_u64(fcport->port_name);
42 req.node_name = wwn_to_u64(fcport->node_name);
43 req.port_role = 0;
44 req.dev_loss_tmo = 0;
45
46 if (fcport->nvme_prli_service_param & NVME_PRLI_SP_INITIATOR)
47 req.port_role = FC_PORT_ROLE_NVME_INITIATOR;
48
49 if (fcport->nvme_prli_service_param & NVME_PRLI_SP_TARGET)
50 req.port_role |= FC_PORT_ROLE_NVME_TARGET;
51
52 if (fcport->nvme_prli_service_param & NVME_PRLI_SP_DISCOVERY)
53 req.port_role |= FC_PORT_ROLE_NVME_DISCOVERY;
54
55 req.port_id = fcport->d_id.b24;
56
57 ql_log(ql_log_info, vha, 0x2102,
58 "%s: traddr=nn-0x%016llx:pn-0x%016llx PortID:%06x\n",
59 __func__, req.node_name, req.port_name,
60 req.port_id);
61
62 ret = nvme_fc_register_remoteport(vha->nvme_local_port, &req,
63 &fcport->nvme_remote_port);
64 if (ret) {
65 ql_log(ql_log_warn, vha, 0x212e,
66 "Failed to register remote port. Transport returned %d\n",
67 ret);
68 return ret;
69 }
70
71 if (fcport->nvme_prli_service_param & NVME_PRLI_SP_SLER)
72 ql_log(ql_log_info, vha, 0x212a,
73 "PortID:%06x Supports SLER\n", req.port_id);
74
75 if (fcport->nvme_prli_service_param & NVME_PRLI_SP_PI_CTRL)
76 ql_log(ql_log_info, vha, 0x212b,
77 "PortID:%06x Supports PI control\n", req.port_id);
78
79 rport = fcport->nvme_remote_port->private;
80 rport->fcport = fcport;
81
82 fcport->nvme_flag |= NVME_FLAG_REGISTERED;
83 return 0;
84 }
85
86 /* Allocate a queue for NVMe traffic */
qla_nvme_alloc_queue(struct nvme_fc_local_port * lport,unsigned int qidx,u16 qsize,void ** handle)87 static int qla_nvme_alloc_queue(struct nvme_fc_local_port *lport,
88 unsigned int qidx, u16 qsize, void **handle)
89 {
90 struct scsi_qla_host *vha;
91 struct qla_hw_data *ha;
92 struct qla_qpair *qpair;
93
94 /* Map admin queue and 1st IO queue to index 0 */
95 if (qidx)
96 qidx--;
97
98 vha = (struct scsi_qla_host *)lport->private;
99 ha = vha->hw;
100
101 ql_log(ql_log_info, vha, 0x2104,
102 "%s: handle %p, idx =%d, qsize %d\n",
103 __func__, handle, qidx, qsize);
104
105 if (qidx > qla_nvme_fc_transport.max_hw_queues) {
106 ql_log(ql_log_warn, vha, 0x212f,
107 "%s: Illegal qidx=%d. Max=%d\n",
108 __func__, qidx, qla_nvme_fc_transport.max_hw_queues);
109 return -EINVAL;
110 }
111
112 /* Use base qpair if max_qpairs is 0 */
113 if (!ha->max_qpairs) {
114 qpair = ha->base_qpair;
115 } else {
116 if (ha->queue_pair_map[qidx]) {
117 *handle = ha->queue_pair_map[qidx];
118 ql_log(ql_log_info, vha, 0x2121,
119 "Returning existing qpair of %p for idx=%x\n",
120 *handle, qidx);
121 return 0;
122 }
123
124 qpair = qla2xxx_create_qpair(vha, 5, vha->vp_idx, true);
125 if (!qpair) {
126 ql_log(ql_log_warn, vha, 0x2122,
127 "Failed to allocate qpair\n");
128 return -EINVAL;
129 }
130 }
131 *handle = qpair;
132
133 return 0;
134 }
135
qla_nvme_release_fcp_cmd_kref(struct kref * kref)136 static void qla_nvme_release_fcp_cmd_kref(struct kref *kref)
137 {
138 struct srb *sp = container_of(kref, struct srb, cmd_kref);
139 struct nvme_private *priv = (struct nvme_private *)sp->priv;
140 struct nvmefc_fcp_req *fd;
141 struct srb_iocb *nvme;
142 unsigned long flags;
143
144 if (!priv)
145 goto out;
146
147 nvme = &sp->u.iocb_cmd;
148 fd = nvme->u.nvme.desc;
149
150 spin_lock_irqsave(&priv->cmd_lock, flags);
151 priv->sp = NULL;
152 sp->priv = NULL;
153 if (priv->comp_status == QLA_SUCCESS) {
154 fd->rcv_rsplen = le16_to_cpu(nvme->u.nvme.rsp_pyld_len);
155 fd->status = NVME_SC_SUCCESS;
156 } else {
157 fd->rcv_rsplen = 0;
158 fd->transferred_length = 0;
159 fd->status = NVME_SC_INTERNAL;
160 }
161 spin_unlock_irqrestore(&priv->cmd_lock, flags);
162
163 fd->done(fd);
164 out:
165 qla2xxx_rel_qpair_sp(sp->qpair, sp);
166 }
167
qla_nvme_ls_unmap(struct srb * sp,struct nvmefc_ls_req * fd)168 static void qla_nvme_ls_unmap(struct srb *sp, struct nvmefc_ls_req *fd)
169 {
170 if (sp->flags & SRB_DMA_VALID) {
171 struct srb_iocb *nvme = &sp->u.iocb_cmd;
172 struct qla_hw_data *ha = sp->fcport->vha->hw;
173
174 dma_unmap_single(&ha->pdev->dev, nvme->u.nvme.cmd_dma,
175 fd->rqstlen, DMA_TO_DEVICE);
176 sp->flags &= ~SRB_DMA_VALID;
177 }
178 }
179
qla_nvme_release_ls_cmd_kref(struct kref * kref)180 static void qla_nvme_release_ls_cmd_kref(struct kref *kref)
181 {
182 struct srb *sp = container_of(kref, struct srb, cmd_kref);
183 struct nvme_private *priv = (struct nvme_private *)sp->priv;
184 struct nvmefc_ls_req *fd;
185 unsigned long flags;
186
187 if (!priv)
188 goto out;
189
190 spin_lock_irqsave(&priv->cmd_lock, flags);
191 priv->sp = NULL;
192 sp->priv = NULL;
193 spin_unlock_irqrestore(&priv->cmd_lock, flags);
194
195 fd = priv->fd;
196
197 qla_nvme_ls_unmap(sp, fd);
198 fd->done(fd, priv->comp_status);
199 out:
200 qla2x00_rel_sp(sp);
201 }
202
qla_nvme_ls_complete(struct work_struct * work)203 static void qla_nvme_ls_complete(struct work_struct *work)
204 {
205 struct nvme_private *priv =
206 container_of(work, struct nvme_private, ls_work);
207
208 kref_put(&priv->sp->cmd_kref, qla_nvme_release_ls_cmd_kref);
209 }
210
qla_nvme_sp_ls_done(srb_t * sp,int res)211 static void qla_nvme_sp_ls_done(srb_t *sp, int res)
212 {
213 struct nvme_private *priv = sp->priv;
214
215 if (WARN_ON_ONCE(kref_read(&sp->cmd_kref) == 0))
216 return;
217
218 if (res)
219 res = -EINVAL;
220
221 priv->comp_status = res;
222 INIT_WORK(&priv->ls_work, qla_nvme_ls_complete);
223 schedule_work(&priv->ls_work);
224 }
225
226 /* it assumed that QPair lock is held. */
qla_nvme_sp_done(srb_t * sp,int res)227 static void qla_nvme_sp_done(srb_t *sp, int res)
228 {
229 struct nvme_private *priv = sp->priv;
230
231 priv->comp_status = res;
232 kref_put(&sp->cmd_kref, qla_nvme_release_fcp_cmd_kref);
233
234 return;
235 }
236
qla_nvme_abort_work(struct work_struct * work)237 static void qla_nvme_abort_work(struct work_struct *work)
238 {
239 struct nvme_private *priv =
240 container_of(work, struct nvme_private, abort_work);
241 srb_t *sp = priv->sp;
242 fc_port_t *fcport = sp->fcport;
243 struct qla_hw_data *ha = fcport->vha->hw;
244 int rval;
245
246 ql_dbg(ql_dbg_io, fcport->vha, 0xffff,
247 "%s called for sp=%p, hndl=%x on fcport=%p deleted=%d\n",
248 __func__, sp, sp->handle, fcport, fcport->deleted);
249
250 if (!ha->flags.fw_started && fcport->deleted)
251 goto out;
252
253 if (ha->flags.host_shutting_down) {
254 ql_log(ql_log_info, sp->fcport->vha, 0xffff,
255 "%s Calling done on sp: %p, type: 0x%x\n",
256 __func__, sp, sp->type);
257 sp->done(sp, 0);
258 goto out;
259 }
260
261 rval = ha->isp_ops->abort_command(sp);
262
263 ql_dbg(ql_dbg_io, fcport->vha, 0x212b,
264 "%s: %s command for sp=%p, handle=%x on fcport=%p rval=%x\n",
265 __func__, (rval != QLA_SUCCESS) ? "Failed to abort" : "Aborted",
266 sp, sp->handle, fcport, rval);
267
268 out:
269 /* kref_get was done before work was schedule. */
270 kref_put(&sp->cmd_kref, sp->put_fn);
271 }
272
qla_nvme_ls_abort(struct nvme_fc_local_port * lport,struct nvme_fc_remote_port * rport,struct nvmefc_ls_req * fd)273 static void qla_nvme_ls_abort(struct nvme_fc_local_port *lport,
274 struct nvme_fc_remote_port *rport, struct nvmefc_ls_req *fd)
275 {
276 struct nvme_private *priv = fd->private;
277 unsigned long flags;
278
279 spin_lock_irqsave(&priv->cmd_lock, flags);
280 if (!priv->sp) {
281 spin_unlock_irqrestore(&priv->cmd_lock, flags);
282 return;
283 }
284
285 if (!kref_get_unless_zero(&priv->sp->cmd_kref)) {
286 spin_unlock_irqrestore(&priv->cmd_lock, flags);
287 return;
288 }
289 spin_unlock_irqrestore(&priv->cmd_lock, flags);
290
291 INIT_WORK(&priv->abort_work, qla_nvme_abort_work);
292 schedule_work(&priv->abort_work);
293 }
294
qla_nvme_ls_req(struct nvme_fc_local_port * lport,struct nvme_fc_remote_port * rport,struct nvmefc_ls_req * fd)295 static int qla_nvme_ls_req(struct nvme_fc_local_port *lport,
296 struct nvme_fc_remote_port *rport, struct nvmefc_ls_req *fd)
297 {
298 struct qla_nvme_rport *qla_rport = rport->private;
299 fc_port_t *fcport = qla_rport->fcport;
300 struct srb_iocb *nvme;
301 struct nvme_private *priv = fd->private;
302 struct scsi_qla_host *vha;
303 int rval = QLA_FUNCTION_FAILED;
304 struct qla_hw_data *ha;
305 srb_t *sp;
306
307
308 if (!fcport || (fcport && fcport->deleted))
309 return rval;
310
311 vha = fcport->vha;
312 ha = vha->hw;
313
314 if (!ha->flags.fw_started)
315 return rval;
316
317 /* Alloc SRB structure */
318 sp = qla2x00_get_sp(vha, fcport, GFP_ATOMIC);
319 if (!sp)
320 return rval;
321
322 sp->type = SRB_NVME_LS;
323 sp->name = "nvme_ls";
324 sp->done = qla_nvme_sp_ls_done;
325 sp->put_fn = qla_nvme_release_ls_cmd_kref;
326 sp->priv = priv;
327 priv->sp = sp;
328 kref_init(&sp->cmd_kref);
329 spin_lock_init(&priv->cmd_lock);
330 nvme = &sp->u.iocb_cmd;
331 priv->fd = fd;
332 nvme->u.nvme.desc = fd;
333 nvme->u.nvme.dir = 0;
334 nvme->u.nvme.dl = 0;
335 nvme->u.nvme.cmd_len = fd->rqstlen;
336 nvme->u.nvme.rsp_len = fd->rsplen;
337 nvme->u.nvme.rsp_dma = fd->rspdma;
338 nvme->u.nvme.timeout_sec = fd->timeout;
339 nvme->u.nvme.cmd_dma = dma_map_single(&ha->pdev->dev, fd->rqstaddr,
340 fd->rqstlen, DMA_TO_DEVICE);
341 dma_sync_single_for_device(&ha->pdev->dev, nvme->u.nvme.cmd_dma,
342 fd->rqstlen, DMA_TO_DEVICE);
343
344 sp->flags |= SRB_DMA_VALID;
345
346 rval = qla2x00_start_sp(sp);
347 if (rval != QLA_SUCCESS) {
348 ql_log(ql_log_warn, vha, 0x700e,
349 "qla2x00_start_sp failed = %d\n", rval);
350 wake_up(&sp->nvme_ls_waitq);
351 sp->priv = NULL;
352 priv->sp = NULL;
353 qla_nvme_ls_unmap(sp, fd);
354 qla2x00_rel_sp(sp);
355 return rval;
356 }
357
358 return rval;
359 }
360
qla_nvme_fcp_abort(struct nvme_fc_local_port * lport,struct nvme_fc_remote_port * rport,void * hw_queue_handle,struct nvmefc_fcp_req * fd)361 static void qla_nvme_fcp_abort(struct nvme_fc_local_port *lport,
362 struct nvme_fc_remote_port *rport, void *hw_queue_handle,
363 struct nvmefc_fcp_req *fd)
364 {
365 struct nvme_private *priv = fd->private;
366 unsigned long flags;
367
368 spin_lock_irqsave(&priv->cmd_lock, flags);
369 if (!priv->sp) {
370 spin_unlock_irqrestore(&priv->cmd_lock, flags);
371 return;
372 }
373 if (!kref_get_unless_zero(&priv->sp->cmd_kref)) {
374 spin_unlock_irqrestore(&priv->cmd_lock, flags);
375 return;
376 }
377 spin_unlock_irqrestore(&priv->cmd_lock, flags);
378
379 INIT_WORK(&priv->abort_work, qla_nvme_abort_work);
380 schedule_work(&priv->abort_work);
381 }
382
qla2x00_start_nvme_mq(srb_t * sp)383 static inline int qla2x00_start_nvme_mq(srb_t *sp)
384 {
385 unsigned long flags;
386 uint32_t *clr_ptr;
387 uint32_t handle;
388 struct cmd_nvme *cmd_pkt;
389 uint16_t cnt, i;
390 uint16_t req_cnt;
391 uint16_t tot_dsds;
392 uint16_t avail_dsds;
393 struct dsd64 *cur_dsd;
394 struct req_que *req = NULL;
395 struct scsi_qla_host *vha = sp->fcport->vha;
396 struct qla_hw_data *ha = vha->hw;
397 struct qla_qpair *qpair = sp->qpair;
398 struct srb_iocb *nvme = &sp->u.iocb_cmd;
399 struct scatterlist *sgl, *sg;
400 struct nvmefc_fcp_req *fd = nvme->u.nvme.desc;
401 struct nvme_fc_cmd_iu *cmd = fd->cmdaddr;
402 uint32_t rval = QLA_SUCCESS;
403
404 /* Setup qpair pointers */
405 req = qpair->req;
406 tot_dsds = fd->sg_cnt;
407
408 /* Acquire qpair specific lock */
409 spin_lock_irqsave(&qpair->qp_lock, flags);
410
411 handle = qla2xxx_get_next_handle(req);
412 if (handle == 0) {
413 rval = -EBUSY;
414 goto queuing_error;
415 }
416 req_cnt = qla24xx_calc_iocbs(vha, tot_dsds);
417 if (req->cnt < (req_cnt + 2)) {
418 cnt = IS_SHADOW_REG_CAPABLE(ha) ? *req->out_ptr :
419 rd_reg_dword_relaxed(req->req_q_out);
420
421 if (req->ring_index < cnt)
422 req->cnt = cnt - req->ring_index;
423 else
424 req->cnt = req->length - (req->ring_index - cnt);
425
426 if (req->cnt < (req_cnt + 2)){
427 rval = -EBUSY;
428 goto queuing_error;
429 }
430 }
431
432 if (unlikely(!fd->sqid)) {
433 if (cmd->sqe.common.opcode == nvme_admin_async_event) {
434 nvme->u.nvme.aen_op = 1;
435 atomic_inc(&ha->nvme_active_aen_cnt);
436 }
437 }
438
439 /* Build command packet. */
440 req->current_outstanding_cmd = handle;
441 req->outstanding_cmds[handle] = sp;
442 sp->handle = handle;
443 req->cnt -= req_cnt;
444
445 cmd_pkt = (struct cmd_nvme *)req->ring_ptr;
446 cmd_pkt->handle = make_handle(req->id, handle);
447
448 /* Zero out remaining portion of packet. */
449 clr_ptr = (uint32_t *)cmd_pkt + 2;
450 memset(clr_ptr, 0, REQUEST_ENTRY_SIZE - 8);
451
452 cmd_pkt->entry_status = 0;
453
454 /* Update entry type to indicate Command NVME IOCB */
455 cmd_pkt->entry_type = COMMAND_NVME;
456
457 /* No data transfer how do we check buffer len == 0?? */
458 if (fd->io_dir == NVMEFC_FCP_READ) {
459 cmd_pkt->control_flags = cpu_to_le16(CF_READ_DATA);
460 qpair->counters.input_bytes += fd->payload_length;
461 qpair->counters.input_requests++;
462 } else if (fd->io_dir == NVMEFC_FCP_WRITE) {
463 cmd_pkt->control_flags = cpu_to_le16(CF_WRITE_DATA);
464 if ((vha->flags.nvme_first_burst) &&
465 (sp->fcport->nvme_prli_service_param &
466 NVME_PRLI_SP_FIRST_BURST)) {
467 if ((fd->payload_length <=
468 sp->fcport->nvme_first_burst_size) ||
469 (sp->fcport->nvme_first_burst_size == 0))
470 cmd_pkt->control_flags |=
471 cpu_to_le16(CF_NVME_FIRST_BURST_ENABLE);
472 }
473 qpair->counters.output_bytes += fd->payload_length;
474 qpair->counters.output_requests++;
475 } else if (fd->io_dir == 0) {
476 cmd_pkt->control_flags = 0;
477 }
478 /* Set BIT_13 of control flags for Async event */
479 if (vha->flags.nvme2_enabled &&
480 cmd->sqe.common.opcode == nvme_admin_async_event) {
481 cmd_pkt->control_flags |= cpu_to_le16(CF_ADMIN_ASYNC_EVENT);
482 }
483
484 /* Set NPORT-ID */
485 cmd_pkt->nport_handle = cpu_to_le16(sp->fcport->loop_id);
486 cmd_pkt->port_id[0] = sp->fcport->d_id.b.al_pa;
487 cmd_pkt->port_id[1] = sp->fcport->d_id.b.area;
488 cmd_pkt->port_id[2] = sp->fcport->d_id.b.domain;
489 cmd_pkt->vp_index = sp->fcport->vha->vp_idx;
490
491 /* NVME RSP IU */
492 cmd_pkt->nvme_rsp_dsd_len = cpu_to_le16(fd->rsplen);
493 put_unaligned_le64(fd->rspdma, &cmd_pkt->nvme_rsp_dseg_address);
494
495 /* NVME CNMD IU */
496 cmd_pkt->nvme_cmnd_dseg_len = cpu_to_le16(fd->cmdlen);
497 cmd_pkt->nvme_cmnd_dseg_address = cpu_to_le64(fd->cmddma);
498
499 cmd_pkt->dseg_count = cpu_to_le16(tot_dsds);
500 cmd_pkt->byte_count = cpu_to_le32(fd->payload_length);
501
502 /* One DSD is available in the Command Type NVME IOCB */
503 avail_dsds = 1;
504 cur_dsd = &cmd_pkt->nvme_dsd;
505 sgl = fd->first_sgl;
506
507 /* Load data segments */
508 for_each_sg(sgl, sg, tot_dsds, i) {
509 cont_a64_entry_t *cont_pkt;
510
511 /* Allocate additional continuation packets? */
512 if (avail_dsds == 0) {
513 /*
514 * Five DSDs are available in the Continuation
515 * Type 1 IOCB.
516 */
517
518 /* Adjust ring index */
519 req->ring_index++;
520 if (req->ring_index == req->length) {
521 req->ring_index = 0;
522 req->ring_ptr = req->ring;
523 } else {
524 req->ring_ptr++;
525 }
526 cont_pkt = (cont_a64_entry_t *)req->ring_ptr;
527 put_unaligned_le32(CONTINUE_A64_TYPE,
528 &cont_pkt->entry_type);
529
530 cur_dsd = cont_pkt->dsd;
531 avail_dsds = ARRAY_SIZE(cont_pkt->dsd);
532 }
533
534 append_dsd64(&cur_dsd, sg);
535 avail_dsds--;
536 }
537
538 /* Set total entry count. */
539 cmd_pkt->entry_count = (uint8_t)req_cnt;
540 wmb();
541
542 /* Adjust ring index. */
543 req->ring_index++;
544 if (req->ring_index == req->length) {
545 req->ring_index = 0;
546 req->ring_ptr = req->ring;
547 } else {
548 req->ring_ptr++;
549 }
550
551 /* Set chip new ring index. */
552 wrt_reg_dword(req->req_q_in, req->ring_index);
553
554 queuing_error:
555 spin_unlock_irqrestore(&qpair->qp_lock, flags);
556 return rval;
557 }
558
559 /* Post a command */
qla_nvme_post_cmd(struct nvme_fc_local_port * lport,struct nvme_fc_remote_port * rport,void * hw_queue_handle,struct nvmefc_fcp_req * fd)560 static int qla_nvme_post_cmd(struct nvme_fc_local_port *lport,
561 struct nvme_fc_remote_port *rport, void *hw_queue_handle,
562 struct nvmefc_fcp_req *fd)
563 {
564 fc_port_t *fcport;
565 struct srb_iocb *nvme;
566 struct scsi_qla_host *vha;
567 int rval;
568 srb_t *sp;
569 struct qla_qpair *qpair = hw_queue_handle;
570 struct nvme_private *priv = fd->private;
571 struct qla_nvme_rport *qla_rport = rport->private;
572
573 if (!priv) {
574 /* nvme association has been torn down */
575 return -ENODEV;
576 }
577
578 fcport = qla_rport->fcport;
579
580 if (!qpair || !fcport)
581 return -ENODEV;
582
583 if (!qpair->fw_started || fcport->deleted)
584 return -EBUSY;
585
586 vha = fcport->vha;
587
588 if (!(fcport->nvme_flag & NVME_FLAG_REGISTERED))
589 return -ENODEV;
590
591 if (test_bit(ABORT_ISP_ACTIVE, &vha->dpc_flags) ||
592 (qpair && !qpair->fw_started) || fcport->deleted)
593 return -EBUSY;
594
595 /*
596 * If we know the dev is going away while the transport is still sending
597 * IO's return busy back to stall the IO Q. This happens when the
598 * link goes away and fw hasn't notified us yet, but IO's are being
599 * returned. If the dev comes back quickly we won't exhaust the IO
600 * retry count at the core.
601 */
602 if (fcport->nvme_flag & NVME_FLAG_RESETTING)
603 return -EBUSY;
604
605 /* Alloc SRB structure */
606 sp = qla2xxx_get_qpair_sp(vha, qpair, fcport, GFP_ATOMIC);
607 if (!sp)
608 return -EBUSY;
609
610 init_waitqueue_head(&sp->nvme_ls_waitq);
611 kref_init(&sp->cmd_kref);
612 spin_lock_init(&priv->cmd_lock);
613 sp->priv = priv;
614 priv->sp = sp;
615 sp->type = SRB_NVME_CMD;
616 sp->name = "nvme_cmd";
617 sp->done = qla_nvme_sp_done;
618 sp->put_fn = qla_nvme_release_fcp_cmd_kref;
619 sp->qpair = qpair;
620 sp->vha = vha;
621 nvme = &sp->u.iocb_cmd;
622 nvme->u.nvme.desc = fd;
623
624 rval = qla2x00_start_nvme_mq(sp);
625 if (rval != QLA_SUCCESS) {
626 ql_log(ql_log_warn, vha, 0x212d,
627 "qla2x00_start_nvme_mq failed = %d\n", rval);
628 wake_up(&sp->nvme_ls_waitq);
629 sp->priv = NULL;
630 priv->sp = NULL;
631 qla2xxx_rel_qpair_sp(sp->qpair, sp);
632 }
633
634 return rval;
635 }
636
qla_nvme_localport_delete(struct nvme_fc_local_port * lport)637 static void qla_nvme_localport_delete(struct nvme_fc_local_port *lport)
638 {
639 struct scsi_qla_host *vha = lport->private;
640
641 ql_log(ql_log_info, vha, 0x210f,
642 "localport delete of %p completed.\n", vha->nvme_local_port);
643 vha->nvme_local_port = NULL;
644 complete(&vha->nvme_del_done);
645 }
646
qla_nvme_remoteport_delete(struct nvme_fc_remote_port * rport)647 static void qla_nvme_remoteport_delete(struct nvme_fc_remote_port *rport)
648 {
649 fc_port_t *fcport;
650 struct qla_nvme_rport *qla_rport = rport->private;
651
652 fcport = qla_rport->fcport;
653 fcport->nvme_remote_port = NULL;
654 fcport->nvme_flag &= ~NVME_FLAG_REGISTERED;
655 fcport->nvme_flag &= ~NVME_FLAG_DELETING;
656 ql_log(ql_log_info, fcport->vha, 0x2110,
657 "remoteport_delete of %p %8phN completed.\n",
658 fcport, fcport->port_name);
659 complete(&fcport->nvme_del_done);
660 }
661
662 static struct nvme_fc_port_template qla_nvme_fc_transport = {
663 .localport_delete = qla_nvme_localport_delete,
664 .remoteport_delete = qla_nvme_remoteport_delete,
665 .create_queue = qla_nvme_alloc_queue,
666 .delete_queue = NULL,
667 .ls_req = qla_nvme_ls_req,
668 .ls_abort = qla_nvme_ls_abort,
669 .fcp_io = qla_nvme_post_cmd,
670 .fcp_abort = qla_nvme_fcp_abort,
671 .max_hw_queues = 8,
672 .max_sgl_segments = 1024,
673 .max_dif_sgl_segments = 64,
674 .dma_boundary = 0xFFFFFFFF,
675 .local_priv_sz = 8,
676 .remote_priv_sz = sizeof(struct qla_nvme_rport),
677 .lsrqst_priv_sz = sizeof(struct nvme_private),
678 .fcprqst_priv_sz = sizeof(struct nvme_private),
679 };
680
qla_nvme_unregister_remote_port(struct fc_port * fcport)681 void qla_nvme_unregister_remote_port(struct fc_port *fcport)
682 {
683 int ret;
684
685 if (!IS_ENABLED(CONFIG_NVME_FC))
686 return;
687
688 ql_log(ql_log_warn, NULL, 0x2112,
689 "%s: unregister remoteport on %p %8phN\n",
690 __func__, fcport, fcport->port_name);
691
692 if (test_bit(PFLG_DRIVER_REMOVING, &fcport->vha->pci_flags))
693 nvme_fc_set_remoteport_devloss(fcport->nvme_remote_port, 0);
694
695 init_completion(&fcport->nvme_del_done);
696 ret = nvme_fc_unregister_remoteport(fcport->nvme_remote_port);
697 if (ret)
698 ql_log(ql_log_info, fcport->vha, 0x2114,
699 "%s: Failed to unregister nvme_remote_port (%d)\n",
700 __func__, ret);
701 wait_for_completion(&fcport->nvme_del_done);
702 }
703
qla_nvme_delete(struct scsi_qla_host * vha)704 void qla_nvme_delete(struct scsi_qla_host *vha)
705 {
706 int nv_ret;
707
708 if (!IS_ENABLED(CONFIG_NVME_FC))
709 return;
710
711 if (vha->nvme_local_port) {
712 init_completion(&vha->nvme_del_done);
713 ql_log(ql_log_info, vha, 0x2116,
714 "unregister localport=%p\n",
715 vha->nvme_local_port);
716 nv_ret = nvme_fc_unregister_localport(vha->nvme_local_port);
717 if (nv_ret)
718 ql_log(ql_log_info, vha, 0x2115,
719 "Unregister of localport failed\n");
720 else
721 wait_for_completion(&vha->nvme_del_done);
722 }
723 }
724
qla_nvme_register_hba(struct scsi_qla_host * vha)725 int qla_nvme_register_hba(struct scsi_qla_host *vha)
726 {
727 struct nvme_fc_port_template *tmpl;
728 struct qla_hw_data *ha;
729 struct nvme_fc_port_info pinfo;
730 int ret = -EINVAL;
731
732 if (!IS_ENABLED(CONFIG_NVME_FC))
733 return ret;
734
735 ha = vha->hw;
736 tmpl = &qla_nvme_fc_transport;
737
738 WARN_ON(vha->nvme_local_port);
739
740 qla_nvme_fc_transport.max_hw_queues =
741 min((uint8_t)(qla_nvme_fc_transport.max_hw_queues),
742 (uint8_t)(ha->max_qpairs ? ha->max_qpairs : 1));
743
744 pinfo.node_name = wwn_to_u64(vha->node_name);
745 pinfo.port_name = wwn_to_u64(vha->port_name);
746 pinfo.port_role = FC_PORT_ROLE_NVME_INITIATOR;
747 pinfo.port_id = vha->d_id.b24;
748
749 ql_log(ql_log_info, vha, 0xffff,
750 "register_localport: host-traddr=nn-0x%llx:pn-0x%llx on portID:%x\n",
751 pinfo.node_name, pinfo.port_name, pinfo.port_id);
752 qla_nvme_fc_transport.dma_boundary = vha->host->dma_boundary;
753
754 ret = nvme_fc_register_localport(&pinfo, tmpl,
755 get_device(&ha->pdev->dev), &vha->nvme_local_port);
756 if (ret) {
757 ql_log(ql_log_warn, vha, 0xffff,
758 "register_localport failed: ret=%x\n", ret);
759 } else {
760 vha->nvme_local_port->private = vha;
761 }
762
763 return ret;
764 }
765