1 /*
2 * QLogic Fibre Channel HBA Driver
3 * Copyright (c) 2003-2017 QLogic Corporation
4 *
5 * See LICENSE.qla2xxx for copyright and licensing details.
6 */
7 #include "qla_nvme.h"
8 #include <linux/scatterlist.h>
9 #include <linux/delay.h>
10 #include <linux/nvme.h>
11 #include <linux/nvme-fc.h>
12
13 static struct nvme_fc_port_template qla_nvme_fc_transport;
14
15 static void qla_nvme_unregister_remote_port(struct work_struct *);
16
qla_nvme_register_remote(struct scsi_qla_host * vha,struct fc_port * fcport)17 int qla_nvme_register_remote(struct scsi_qla_host *vha, struct fc_port *fcport)
18 {
19 struct qla_nvme_rport *rport;
20 struct nvme_fc_port_info req;
21 int ret;
22
23 if (!IS_ENABLED(CONFIG_NVME_FC))
24 return 0;
25
26 if (!vha->flags.nvme_enabled) {
27 ql_log(ql_log_info, vha, 0x2100,
28 "%s: Not registering target since Host NVME is not enabled\n",
29 __func__);
30 return 0;
31 }
32
33 if (!vha->nvme_local_port && qla_nvme_register_hba(vha))
34 return 0;
35
36 if (!(fcport->nvme_prli_service_param &
37 (NVME_PRLI_SP_TARGET | NVME_PRLI_SP_DISCOVERY)) ||
38 (fcport->nvme_flag & NVME_FLAG_REGISTERED))
39 return 0;
40
41 INIT_WORK(&fcport->nvme_del_work, qla_nvme_unregister_remote_port);
42 fcport->nvme_flag &= ~NVME_FLAG_RESETTING;
43
44 memset(&req, 0, sizeof(struct nvme_fc_port_info));
45 req.port_name = wwn_to_u64(fcport->port_name);
46 req.node_name = wwn_to_u64(fcport->node_name);
47 req.port_role = 0;
48 req.dev_loss_tmo = NVME_FC_DEV_LOSS_TMO;
49
50 if (fcport->nvme_prli_service_param & NVME_PRLI_SP_INITIATOR)
51 req.port_role = FC_PORT_ROLE_NVME_INITIATOR;
52
53 if (fcport->nvme_prli_service_param & NVME_PRLI_SP_TARGET)
54 req.port_role |= FC_PORT_ROLE_NVME_TARGET;
55
56 if (fcport->nvme_prli_service_param & NVME_PRLI_SP_DISCOVERY)
57 req.port_role |= FC_PORT_ROLE_NVME_DISCOVERY;
58
59 req.port_id = fcport->d_id.b24;
60
61 ql_log(ql_log_info, vha, 0x2102,
62 "%s: traddr=nn-0x%016llx:pn-0x%016llx PortID:%06x\n",
63 __func__, req.node_name, req.port_name,
64 req.port_id);
65
66 ret = nvme_fc_register_remoteport(vha->nvme_local_port, &req,
67 &fcport->nvme_remote_port);
68 if (ret) {
69 ql_log(ql_log_warn, vha, 0x212e,
70 "Failed to register remote port. Transport returned %d\n",
71 ret);
72 return ret;
73 }
74
75 rport = fcport->nvme_remote_port->private;
76 rport->fcport = fcport;
77 list_add_tail(&rport->list, &vha->nvme_rport_list);
78
79 fcport->nvme_flag |= NVME_FLAG_REGISTERED;
80 return 0;
81 }
82
83 /* Allocate a queue for NVMe traffic */
qla_nvme_alloc_queue(struct nvme_fc_local_port * lport,unsigned int qidx,u16 qsize,void ** handle)84 static int qla_nvme_alloc_queue(struct nvme_fc_local_port *lport,
85 unsigned int qidx, u16 qsize, void **handle)
86 {
87 struct scsi_qla_host *vha;
88 struct qla_hw_data *ha;
89 struct qla_qpair *qpair;
90
91 if (!qidx)
92 qidx++;
93
94 vha = (struct scsi_qla_host *)lport->private;
95 ha = vha->hw;
96
97 ql_log(ql_log_info, vha, 0x2104,
98 "%s: handle %p, idx =%d, qsize %d\n",
99 __func__, handle, qidx, qsize);
100
101 if (qidx > qla_nvme_fc_transport.max_hw_queues) {
102 ql_log(ql_log_warn, vha, 0x212f,
103 "%s: Illegal qidx=%d. Max=%d\n",
104 __func__, qidx, qla_nvme_fc_transport.max_hw_queues);
105 return -EINVAL;
106 }
107
108 if (ha->queue_pair_map[qidx]) {
109 *handle = ha->queue_pair_map[qidx];
110 ql_log(ql_log_info, vha, 0x2121,
111 "Returning existing qpair of %p for idx=%x\n",
112 *handle, qidx);
113 return 0;
114 }
115
116 qpair = qla2xxx_create_qpair(vha, 5, vha->vp_idx, true);
117 if (qpair == NULL) {
118 ql_log(ql_log_warn, vha, 0x2122,
119 "Failed to allocate qpair\n");
120 return -EINVAL;
121 }
122 *handle = qpair;
123
124 return 0;
125 }
126
qla_nvme_sp_ls_done(void * ptr,int res)127 static void qla_nvme_sp_ls_done(void *ptr, int res)
128 {
129 srb_t *sp = ptr;
130 struct srb_iocb *nvme;
131 struct nvmefc_ls_req *fd;
132 struct nvme_private *priv;
133
134 if (atomic_read(&sp->ref_count) == 0) {
135 ql_log(ql_log_warn, sp->fcport->vha, 0x2123,
136 "SP reference-count to ZERO on LS_done -- sp=%p.\n", sp);
137 return;
138 }
139
140 if (!atomic_dec_and_test(&sp->ref_count))
141 return;
142
143 if (res)
144 res = -EINVAL;
145
146 nvme = &sp->u.iocb_cmd;
147 fd = nvme->u.nvme.desc;
148 priv = fd->private;
149 priv->comp_status = res;
150 schedule_work(&priv->ls_work);
151 /* work schedule doesn't need the sp */
152 qla2x00_rel_sp(sp);
153 }
154
qla_nvme_sp_done(void * ptr,int res)155 static void qla_nvme_sp_done(void *ptr, int res)
156 {
157 srb_t *sp = ptr;
158 struct srb_iocb *nvme;
159 struct nvmefc_fcp_req *fd;
160
161 nvme = &sp->u.iocb_cmd;
162 fd = nvme->u.nvme.desc;
163
164 if (!atomic_dec_and_test(&sp->ref_count))
165 return;
166
167 if (res == QLA_SUCCESS)
168 fd->status = 0;
169 else
170 fd->status = NVME_SC_INTERNAL;
171
172 fd->rcv_rsplen = nvme->u.nvme.rsp_pyld_len;
173 fd->done(fd);
174 qla2xxx_rel_qpair_sp(sp->qpair, sp);
175
176 return;
177 }
178
qla_nvme_abort_work(struct work_struct * work)179 static void qla_nvme_abort_work(struct work_struct *work)
180 {
181 struct nvme_private *priv =
182 container_of(work, struct nvme_private, abort_work);
183 srb_t *sp = priv->sp;
184 fc_port_t *fcport = sp->fcport;
185 struct qla_hw_data *ha = fcport->vha->hw;
186 int rval;
187
188 rval = ha->isp_ops->abort_command(sp);
189
190 ql_dbg(ql_dbg_io, fcport->vha, 0x212b,
191 "%s: %s command for sp=%p, handle=%x on fcport=%p rval=%x\n",
192 __func__, (rval != QLA_SUCCESS) ? "Failed to abort" : "Aborted",
193 sp, sp->handle, fcport, rval);
194 }
195
qla_nvme_ls_abort(struct nvme_fc_local_port * lport,struct nvme_fc_remote_port * rport,struct nvmefc_ls_req * fd)196 static void qla_nvme_ls_abort(struct nvme_fc_local_port *lport,
197 struct nvme_fc_remote_port *rport, struct nvmefc_ls_req *fd)
198 {
199 struct nvme_private *priv = fd->private;
200
201 INIT_WORK(&priv->abort_work, qla_nvme_abort_work);
202 schedule_work(&priv->abort_work);
203 }
204
qla_nvme_ls_complete(struct work_struct * work)205 static void qla_nvme_ls_complete(struct work_struct *work)
206 {
207 struct nvme_private *priv =
208 container_of(work, struct nvme_private, ls_work);
209 struct nvmefc_ls_req *fd = priv->fd;
210
211 fd->done(fd, priv->comp_status);
212 }
213
qla_nvme_ls_req(struct nvme_fc_local_port * lport,struct nvme_fc_remote_port * rport,struct nvmefc_ls_req * fd)214 static int qla_nvme_ls_req(struct nvme_fc_local_port *lport,
215 struct nvme_fc_remote_port *rport, struct nvmefc_ls_req *fd)
216 {
217 struct qla_nvme_rport *qla_rport = rport->private;
218 fc_port_t *fcport = qla_rport->fcport;
219 struct srb_iocb *nvme;
220 struct nvme_private *priv = fd->private;
221 struct scsi_qla_host *vha;
222 int rval = QLA_FUNCTION_FAILED;
223 struct qla_hw_data *ha;
224 srb_t *sp;
225
226 vha = fcport->vha;
227 ha = vha->hw;
228 /* Alloc SRB structure */
229 sp = qla2x00_get_sp(vha, fcport, GFP_ATOMIC);
230 if (!sp)
231 return rval;
232
233 sp->type = SRB_NVME_LS;
234 sp->name = "nvme_ls";
235 sp->done = qla_nvme_sp_ls_done;
236 atomic_set(&sp->ref_count, 1);
237 nvme = &sp->u.iocb_cmd;
238 priv->sp = sp;
239 priv->fd = fd;
240 INIT_WORK(&priv->ls_work, qla_nvme_ls_complete);
241 nvme->u.nvme.desc = fd;
242 nvme->u.nvme.dir = 0;
243 nvme->u.nvme.dl = 0;
244 nvme->u.nvme.cmd_len = fd->rqstlen;
245 nvme->u.nvme.rsp_len = fd->rsplen;
246 nvme->u.nvme.rsp_dma = fd->rspdma;
247 nvme->u.nvme.timeout_sec = fd->timeout;
248 nvme->u.nvme.cmd_dma = dma_map_single(&ha->pdev->dev, fd->rqstaddr,
249 fd->rqstlen, DMA_TO_DEVICE);
250 dma_sync_single_for_device(&ha->pdev->dev, nvme->u.nvme.cmd_dma,
251 fd->rqstlen, DMA_TO_DEVICE);
252
253 rval = qla2x00_start_sp(sp);
254 if (rval != QLA_SUCCESS) {
255 ql_log(ql_log_warn, vha, 0x700e,
256 "qla2x00_start_sp failed = %d\n", rval);
257 atomic_dec(&sp->ref_count);
258 wake_up(&sp->nvme_ls_waitq);
259 return rval;
260 }
261
262 return rval;
263 }
264
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)265 static void qla_nvme_fcp_abort(struct nvme_fc_local_port *lport,
266 struct nvme_fc_remote_port *rport, void *hw_queue_handle,
267 struct nvmefc_fcp_req *fd)
268 {
269 struct nvme_private *priv = fd->private;
270
271 INIT_WORK(&priv->abort_work, qla_nvme_abort_work);
272 schedule_work(&priv->abort_work);
273 }
274
qla_nvme_poll(struct nvme_fc_local_port * lport,void * hw_queue_handle)275 static void qla_nvme_poll(struct nvme_fc_local_port *lport, void *hw_queue_handle)
276 {
277 struct qla_qpair *qpair = hw_queue_handle;
278 unsigned long flags;
279 struct scsi_qla_host *vha = lport->private;
280
281 spin_lock_irqsave(&qpair->qp_lock, flags);
282 qla24xx_process_response_queue(vha, qpair->rsp);
283 spin_unlock_irqrestore(&qpair->qp_lock, flags);
284 }
285
qla2x00_start_nvme_mq(srb_t * sp)286 static inline int qla2x00_start_nvme_mq(srb_t *sp)
287 {
288 unsigned long flags;
289 uint32_t *clr_ptr;
290 uint32_t index;
291 uint32_t handle;
292 struct cmd_nvme *cmd_pkt;
293 uint16_t cnt, i;
294 uint16_t req_cnt;
295 uint16_t tot_dsds;
296 uint16_t avail_dsds;
297 uint32_t *cur_dsd;
298 struct req_que *req = NULL;
299 struct scsi_qla_host *vha = sp->fcport->vha;
300 struct qla_hw_data *ha = vha->hw;
301 struct qla_qpair *qpair = sp->qpair;
302 struct srb_iocb *nvme = &sp->u.iocb_cmd;
303 struct scatterlist *sgl, *sg;
304 struct nvmefc_fcp_req *fd = nvme->u.nvme.desc;
305 uint32_t rval = QLA_SUCCESS;
306
307 /* Setup qpair pointers */
308 req = qpair->req;
309 tot_dsds = fd->sg_cnt;
310
311 /* Acquire qpair specific lock */
312 spin_lock_irqsave(&qpair->qp_lock, flags);
313
314 /* Check for room in outstanding command list. */
315 handle = req->current_outstanding_cmd;
316 for (index = 1; index < req->num_outstanding_cmds; index++) {
317 handle++;
318 if (handle == req->num_outstanding_cmds)
319 handle = 1;
320 if (!req->outstanding_cmds[handle])
321 break;
322 }
323
324 if (index == req->num_outstanding_cmds) {
325 rval = -EBUSY;
326 goto queuing_error;
327 }
328 req_cnt = qla24xx_calc_iocbs(vha, tot_dsds);
329 if (req->cnt < (req_cnt + 2)) {
330 cnt = IS_SHADOW_REG_CAPABLE(ha) ? *req->out_ptr :
331 RD_REG_DWORD_RELAXED(req->req_q_out);
332
333 if (req->ring_index < cnt)
334 req->cnt = cnt - req->ring_index;
335 else
336 req->cnt = req->length - (req->ring_index - cnt);
337
338 if (req->cnt < (req_cnt + 2)){
339 rval = -EBUSY;
340 goto queuing_error;
341 }
342 }
343
344 if (unlikely(!fd->sqid)) {
345 struct nvme_fc_cmd_iu *cmd = fd->cmdaddr;
346 if (cmd->sqe.common.opcode == nvme_admin_async_event) {
347 nvme->u.nvme.aen_op = 1;
348 atomic_inc(&ha->nvme_active_aen_cnt);
349 }
350 }
351
352 /* Build command packet. */
353 req->current_outstanding_cmd = handle;
354 req->outstanding_cmds[handle] = sp;
355 sp->handle = handle;
356 req->cnt -= req_cnt;
357
358 cmd_pkt = (struct cmd_nvme *)req->ring_ptr;
359 cmd_pkt->handle = MAKE_HANDLE(req->id, handle);
360
361 /* Zero out remaining portion of packet. */
362 clr_ptr = (uint32_t *)cmd_pkt + 2;
363 memset(clr_ptr, 0, REQUEST_ENTRY_SIZE - 8);
364
365 cmd_pkt->entry_status = 0;
366
367 /* Update entry type to indicate Command NVME IOCB */
368 cmd_pkt->entry_type = COMMAND_NVME;
369
370 /* No data transfer how do we check buffer len == 0?? */
371 if (fd->io_dir == NVMEFC_FCP_READ) {
372 cmd_pkt->control_flags =
373 cpu_to_le16(CF_READ_DATA | CF_NVME_ENABLE);
374 vha->qla_stats.input_bytes += fd->payload_length;
375 vha->qla_stats.input_requests++;
376 } else if (fd->io_dir == NVMEFC_FCP_WRITE) {
377 cmd_pkt->control_flags =
378 cpu_to_le16(CF_WRITE_DATA | CF_NVME_ENABLE);
379 vha->qla_stats.output_bytes += fd->payload_length;
380 vha->qla_stats.output_requests++;
381 } else if (fd->io_dir == 0) {
382 cmd_pkt->control_flags = cpu_to_le16(CF_NVME_ENABLE);
383 }
384
385 /* Set NPORT-ID */
386 cmd_pkt->nport_handle = cpu_to_le16(sp->fcport->loop_id);
387 cmd_pkt->port_id[0] = sp->fcport->d_id.b.al_pa;
388 cmd_pkt->port_id[1] = sp->fcport->d_id.b.area;
389 cmd_pkt->port_id[2] = sp->fcport->d_id.b.domain;
390 cmd_pkt->vp_index = sp->fcport->vha->vp_idx;
391
392 /* NVME RSP IU */
393 cmd_pkt->nvme_rsp_dsd_len = cpu_to_le16(fd->rsplen);
394 cmd_pkt->nvme_rsp_dseg_address[0] = cpu_to_le32(LSD(fd->rspdma));
395 cmd_pkt->nvme_rsp_dseg_address[1] = cpu_to_le32(MSD(fd->rspdma));
396
397 /* NVME CNMD IU */
398 cmd_pkt->nvme_cmnd_dseg_len = cpu_to_le16(fd->cmdlen);
399 cmd_pkt->nvme_cmnd_dseg_address[0] = cpu_to_le32(LSD(fd->cmddma));
400 cmd_pkt->nvme_cmnd_dseg_address[1] = cpu_to_le32(MSD(fd->cmddma));
401
402 cmd_pkt->dseg_count = cpu_to_le16(tot_dsds);
403 cmd_pkt->byte_count = cpu_to_le32(fd->payload_length);
404
405 /* One DSD is available in the Command Type NVME IOCB */
406 avail_dsds = 1;
407 cur_dsd = (uint32_t *)&cmd_pkt->nvme_data_dseg_address[0];
408 sgl = fd->first_sgl;
409
410 /* Load data segments */
411 for_each_sg(sgl, sg, tot_dsds, i) {
412 dma_addr_t sle_dma;
413 cont_a64_entry_t *cont_pkt;
414
415 /* Allocate additional continuation packets? */
416 if (avail_dsds == 0) {
417 /*
418 * Five DSDs are available in the Continuation
419 * Type 1 IOCB.
420 */
421
422 /* Adjust ring index */
423 req->ring_index++;
424 if (req->ring_index == req->length) {
425 req->ring_index = 0;
426 req->ring_ptr = req->ring;
427 } else {
428 req->ring_ptr++;
429 }
430 cont_pkt = (cont_a64_entry_t *)req->ring_ptr;
431 *((uint32_t *)(&cont_pkt->entry_type)) =
432 cpu_to_le32(CONTINUE_A64_TYPE);
433
434 cur_dsd = (uint32_t *)cont_pkt->dseg_0_address;
435 avail_dsds = 5;
436 }
437
438 sle_dma = sg_dma_address(sg);
439 *cur_dsd++ = cpu_to_le32(LSD(sle_dma));
440 *cur_dsd++ = cpu_to_le32(MSD(sle_dma));
441 *cur_dsd++ = cpu_to_le32(sg_dma_len(sg));
442 avail_dsds--;
443 }
444
445 /* Set total entry count. */
446 cmd_pkt->entry_count = (uint8_t)req_cnt;
447 wmb();
448
449 /* Adjust ring index. */
450 req->ring_index++;
451 if (req->ring_index == req->length) {
452 req->ring_index = 0;
453 req->ring_ptr = req->ring;
454 } else {
455 req->ring_ptr++;
456 }
457
458 /* Set chip new ring index. */
459 WRT_REG_DWORD(req->req_q_in, req->ring_index);
460
461 queuing_error:
462 spin_unlock_irqrestore(&qpair->qp_lock, flags);
463 return rval;
464 }
465
466 /* 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)467 static int qla_nvme_post_cmd(struct nvme_fc_local_port *lport,
468 struct nvme_fc_remote_port *rport, void *hw_queue_handle,
469 struct nvmefc_fcp_req *fd)
470 {
471 fc_port_t *fcport;
472 struct srb_iocb *nvme;
473 struct scsi_qla_host *vha;
474 int rval = -ENODEV;
475 srb_t *sp;
476 struct qla_qpair *qpair = hw_queue_handle;
477 struct nvme_private *priv;
478 struct qla_nvme_rport *qla_rport = rport->private;
479
480 if (!fd || !qpair) {
481 ql_log(ql_log_warn, NULL, 0x2134,
482 "NO NVMe request or Queue Handle\n");
483 return rval;
484 }
485
486 priv = fd->private;
487 fcport = qla_rport->fcport;
488 if (!fcport) {
489 ql_log(ql_log_warn, NULL, 0x210e, "No fcport ptr\n");
490 return rval;
491 }
492
493 vha = fcport->vha;
494
495 if (test_bit(ABORT_ISP_ACTIVE, &vha->dpc_flags))
496 return rval;
497
498 /*
499 * If we know the dev is going away while the transport is still sending
500 * IO's return busy back to stall the IO Q. This happens when the
501 * link goes away and fw hasn't notified us yet, but IO's are being
502 * returned. If the dev comes back quickly we won't exhaust the IO
503 * retry count at the core.
504 */
505 if (fcport->nvme_flag & NVME_FLAG_RESETTING)
506 return -EBUSY;
507
508 /* Alloc SRB structure */
509 sp = qla2xxx_get_qpair_sp(qpair, fcport, GFP_ATOMIC);
510 if (!sp)
511 return -EBUSY;
512
513 atomic_set(&sp->ref_count, 1);
514 init_waitqueue_head(&sp->nvme_ls_waitq);
515 priv->sp = sp;
516 sp->type = SRB_NVME_CMD;
517 sp->name = "nvme_cmd";
518 sp->done = qla_nvme_sp_done;
519 sp->qpair = qpair;
520 nvme = &sp->u.iocb_cmd;
521 nvme->u.nvme.desc = fd;
522
523 rval = qla2x00_start_nvme_mq(sp);
524 if (rval != QLA_SUCCESS) {
525 ql_log(ql_log_warn, vha, 0x212d,
526 "qla2x00_start_nvme_mq failed = %d\n", rval);
527 atomic_dec(&sp->ref_count);
528 wake_up(&sp->nvme_ls_waitq);
529 }
530
531 return rval;
532 }
533
qla_nvme_localport_delete(struct nvme_fc_local_port * lport)534 static void qla_nvme_localport_delete(struct nvme_fc_local_port *lport)
535 {
536 struct scsi_qla_host *vha = lport->private;
537
538 ql_log(ql_log_info, vha, 0x210f,
539 "localport delete of %p completed.\n", vha->nvme_local_port);
540 vha->nvme_local_port = NULL;
541 complete(&vha->nvme_del_done);
542 }
543
qla_nvme_remoteport_delete(struct nvme_fc_remote_port * rport)544 static void qla_nvme_remoteport_delete(struct nvme_fc_remote_port *rport)
545 {
546 fc_port_t *fcport;
547 struct qla_nvme_rport *qla_rport = rport->private, *trport;
548
549 fcport = qla_rport->fcport;
550 fcport->nvme_remote_port = NULL;
551 fcport->nvme_flag &= ~NVME_FLAG_REGISTERED;
552
553 list_for_each_entry_safe(qla_rport, trport,
554 &fcport->vha->nvme_rport_list, list) {
555 if (qla_rport->fcport == fcport) {
556 list_del(&qla_rport->list);
557 break;
558 }
559 }
560 complete(&fcport->nvme_del_done);
561
562 if (!test_bit(UNLOADING, &fcport->vha->dpc_flags)) {
563 INIT_WORK(&fcport->free_work, qlt_free_session_done);
564 schedule_work(&fcport->free_work);
565 }
566
567 fcport->nvme_flag &= ~(NVME_FLAG_REGISTERED | NVME_FLAG_DELETING);
568 ql_log(ql_log_info, fcport->vha, 0x2110,
569 "remoteport_delete of %p completed.\n", fcport);
570 }
571
572 static struct nvme_fc_port_template qla_nvme_fc_transport = {
573 .localport_delete = qla_nvme_localport_delete,
574 .remoteport_delete = qla_nvme_remoteport_delete,
575 .create_queue = qla_nvme_alloc_queue,
576 .delete_queue = NULL,
577 .ls_req = qla_nvme_ls_req,
578 .ls_abort = qla_nvme_ls_abort,
579 .fcp_io = qla_nvme_post_cmd,
580 .fcp_abort = qla_nvme_fcp_abort,
581 .poll_queue = qla_nvme_poll,
582 .max_hw_queues = 8,
583 .max_sgl_segments = 128,
584 .max_dif_sgl_segments = 64,
585 .dma_boundary = 0xFFFFFFFF,
586 .local_priv_sz = 8,
587 .remote_priv_sz = sizeof(struct qla_nvme_rport),
588 .lsrqst_priv_sz = sizeof(struct nvme_private),
589 .fcprqst_priv_sz = sizeof(struct nvme_private),
590 };
591
592 #define NVME_ABORT_POLLING_PERIOD 2
qla_nvme_wait_on_command(srb_t * sp)593 static int qla_nvme_wait_on_command(srb_t *sp)
594 {
595 int ret = QLA_SUCCESS;
596
597 wait_event_timeout(sp->nvme_ls_waitq, (atomic_read(&sp->ref_count) > 1),
598 NVME_ABORT_POLLING_PERIOD*HZ);
599
600 if (atomic_read(&sp->ref_count) > 1)
601 ret = QLA_FUNCTION_FAILED;
602
603 return ret;
604 }
605
qla_nvme_abort(struct qla_hw_data * ha,struct srb * sp,int res)606 void qla_nvme_abort(struct qla_hw_data *ha, struct srb *sp, int res)
607 {
608 int rval;
609
610 if (!test_bit(ABORT_ISP_ACTIVE, &sp->vha->dpc_flags)) {
611 rval = ha->isp_ops->abort_command(sp);
612 if (!rval && !qla_nvme_wait_on_command(sp))
613 ql_log(ql_log_warn, NULL, 0x2112,
614 "timed out waiting on sp=%p\n", sp);
615 } else {
616 sp->done(sp, res);
617 }
618 }
619
qla_nvme_unregister_remote_port(struct work_struct * work)620 static void qla_nvme_unregister_remote_port(struct work_struct *work)
621 {
622 struct fc_port *fcport = container_of(work, struct fc_port,
623 nvme_del_work);
624 struct qla_nvme_rport *qla_rport, *trport;
625
626 if (!IS_ENABLED(CONFIG_NVME_FC))
627 return;
628
629 ql_log(ql_log_warn, NULL, 0x2112,
630 "%s: unregister remoteport on %p\n",__func__, fcport);
631
632 list_for_each_entry_safe(qla_rport, trport,
633 &fcport->vha->nvme_rport_list, list) {
634 if (qla_rport->fcport == fcport) {
635 ql_log(ql_log_info, fcport->vha, 0x2113,
636 "%s: fcport=%p\n", __func__, fcport);
637 init_completion(&fcport->nvme_del_done);
638 nvme_fc_unregister_remoteport(
639 fcport->nvme_remote_port);
640 wait_for_completion(&fcport->nvme_del_done);
641 break;
642 }
643 }
644 }
645
qla_nvme_delete(struct scsi_qla_host * vha)646 void qla_nvme_delete(struct scsi_qla_host *vha)
647 {
648 struct qla_nvme_rport *qla_rport, *trport;
649 fc_port_t *fcport;
650 int nv_ret;
651
652 if (!IS_ENABLED(CONFIG_NVME_FC))
653 return;
654
655 list_for_each_entry_safe(qla_rport, trport,
656 &vha->nvme_rport_list, list) {
657 fcport = qla_rport->fcport;
658
659 ql_log(ql_log_info, fcport->vha, 0x2114, "%s: fcport=%p\n",
660 __func__, fcport);
661
662 nvme_fc_set_remoteport_devloss(fcport->nvme_remote_port, 0);
663 init_completion(&fcport->nvme_del_done);
664 nvme_fc_unregister_remoteport(fcport->nvme_remote_port);
665 wait_for_completion(&fcport->nvme_del_done);
666 }
667
668 if (vha->nvme_local_port) {
669 init_completion(&vha->nvme_del_done);
670 ql_log(ql_log_info, vha, 0x2116,
671 "unregister localport=%p\n",
672 vha->nvme_local_port);
673 nv_ret = nvme_fc_unregister_localport(vha->nvme_local_port);
674 if (nv_ret)
675 ql_log(ql_log_info, vha, 0x2115,
676 "Unregister of localport failed\n");
677 else
678 wait_for_completion(&vha->nvme_del_done);
679 }
680 }
681
qla_nvme_register_hba(struct scsi_qla_host * vha)682 int qla_nvme_register_hba(struct scsi_qla_host *vha)
683 {
684 struct nvme_fc_port_template *tmpl;
685 struct qla_hw_data *ha;
686 struct nvme_fc_port_info pinfo;
687 int ret = EINVAL;
688
689 if (!IS_ENABLED(CONFIG_NVME_FC))
690 return ret;
691
692 ha = vha->hw;
693 tmpl = &qla_nvme_fc_transport;
694
695 WARN_ON(vha->nvme_local_port);
696 WARN_ON(ha->max_req_queues < 3);
697
698 qla_nvme_fc_transport.max_hw_queues =
699 min((uint8_t)(qla_nvme_fc_transport.max_hw_queues),
700 (uint8_t)(ha->max_req_queues - 2));
701
702 pinfo.node_name = wwn_to_u64(vha->node_name);
703 pinfo.port_name = wwn_to_u64(vha->port_name);
704 pinfo.port_role = FC_PORT_ROLE_NVME_INITIATOR;
705 pinfo.port_id = vha->d_id.b24;
706
707 ql_log(ql_log_info, vha, 0xffff,
708 "register_localport: host-traddr=nn-0x%llx:pn-0x%llx on portID:%x\n",
709 pinfo.node_name, pinfo.port_name, pinfo.port_id);
710 qla_nvme_fc_transport.dma_boundary = vha->host->dma_boundary;
711
712 ret = nvme_fc_register_localport(&pinfo, tmpl,
713 get_device(&ha->pdev->dev), &vha->nvme_local_port);
714 if (ret) {
715 ql_log(ql_log_warn, vha, 0xffff,
716 "register_localport failed: ret=%x\n", ret);
717 } else {
718 vha->nvme_local_port->private = vha;
719 }
720
721 return ret;
722 }
723
