1 // SPDX-License-Identifier: GPL-2.0-only
2 /*
3 * Copyright 2008 Cisco Systems, Inc. All rights reserved.
4 * Copyright 2007 Nuova Systems, Inc. All rights reserved.
5 */
6 #include <linux/module.h>
7 #include <linux/mempool.h>
8 #include <linux/string.h>
9 #include <linux/slab.h>
10 #include <linux/errno.h>
11 #include <linux/init.h>
12 #include <linux/pci.h>
13 #include <linux/skbuff.h>
14 #include <linux/interrupt.h>
15 #include <linux/irq.h>
16 #include <linux/spinlock.h>
17 #include <linux/workqueue.h>
18 #include <linux/if_ether.h>
19 #include <scsi/fc/fc_fip.h>
20 #include <scsi/scsi_host.h>
21 #include <scsi/scsi_transport.h>
22 #include <scsi/scsi_transport_fc.h>
23 #include <scsi/scsi_tcq.h>
24 #include <scsi/fc_frame.h>
25
26 #include "vnic_dev.h"
27 #include "vnic_intr.h"
28 #include "vnic_stats.h"
29 #include "fnic_io.h"
30 #include "fnic.h"
31 #include "fnic_fdls.h"
32 #include "fdls_fc.h"
33
34 #define PCI_DEVICE_ID_CISCO_FNIC 0x0045
35
36 /* Timer to poll notification area for events. Used for MSI interrupts */
37 #define FNIC_NOTIFY_TIMER_PERIOD (2 * HZ)
38
39 static struct kmem_cache *fnic_sgl_cache[FNIC_SGL_NUM_CACHES];
40 static struct kmem_cache *fnic_io_req_cache;
41 static struct kmem_cache *fdls_frame_cache;
42 static struct kmem_cache *fdls_frame_elem_cache;
43 static LIST_HEAD(fnic_list);
44 static DEFINE_SPINLOCK(fnic_list_lock);
45 static DEFINE_IDA(fnic_ida);
46
47 struct work_struct reset_fnic_work;
48 LIST_HEAD(reset_fnic_list);
49 DEFINE_SPINLOCK(reset_fnic_list_lock);
50
51 /* Supported devices by fnic module */
52 static const struct pci_device_id fnic_id_table[] = {
53 { PCI_DEVICE(PCI_VENDOR_ID_CISCO, PCI_DEVICE_ID_CISCO_FNIC) },
54 { 0, }
55 };
56
57 MODULE_DESCRIPTION(DRV_DESCRIPTION);
58 MODULE_AUTHOR("Abhijeet Joglekar <abjoglek@cisco.com>, "
59 "Joseph R. Eykholt <jeykholt@cisco.com>");
60 MODULE_LICENSE("GPL v2");
61 MODULE_VERSION(DRV_VERSION);
62 MODULE_DEVICE_TABLE(pci, fnic_id_table);
63
64 unsigned int fnic_log_level;
65 module_param(fnic_log_level, int, S_IRUGO|S_IWUSR);
66 MODULE_PARM_DESC(fnic_log_level, "bit mask of fnic logging levels");
67
68 unsigned int fnic_fdmi_support = 1;
69 module_param(fnic_fdmi_support, int, 0644);
70 MODULE_PARM_DESC(fnic_fdmi_support, "FDMI support");
71
72 static unsigned int fnic_tgt_id_binding = 1;
73 module_param(fnic_tgt_id_binding, uint, 0644);
74 MODULE_PARM_DESC(fnic_tgt_id_binding,
75 "Target ID binding (0 for none. 1 for binding by WWPN (default))");
76
77 unsigned int io_completions = FNIC_DFLT_IO_COMPLETIONS;
78 module_param(io_completions, int, S_IRUGO|S_IWUSR);
79 MODULE_PARM_DESC(io_completions, "Max CQ entries to process at a time");
80
81 unsigned int fnic_trace_max_pages = 16;
82 module_param(fnic_trace_max_pages, uint, S_IRUGO|S_IWUSR);
83 MODULE_PARM_DESC(fnic_trace_max_pages, "Total allocated memory pages "
84 "for fnic trace buffer");
85
86 unsigned int fnic_fc_trace_max_pages = 64;
87 module_param(fnic_fc_trace_max_pages, uint, S_IRUGO|S_IWUSR);
88 MODULE_PARM_DESC(fnic_fc_trace_max_pages,
89 "Total allocated memory pages for fc trace buffer");
90
91 static unsigned int fnic_max_qdepth = FNIC_DFLT_QUEUE_DEPTH;
92 module_param(fnic_max_qdepth, uint, S_IRUGO|S_IWUSR);
93 MODULE_PARM_DESC(fnic_max_qdepth, "Queue depth to report for each LUN");
94
95 unsigned int pc_rscn_handling_feature_flag = PC_RSCN_HANDLING_FEATURE_ON;
96 module_param(pc_rscn_handling_feature_flag, uint, 0644);
97 MODULE_PARM_DESC(pc_rscn_handling_feature_flag,
98 "PCRSCN handling (0 for none. 1 to handle PCRSCN (default))");
99
100 struct workqueue_struct *reset_fnic_work_queue;
101 struct workqueue_struct *fnic_fip_queue;
102
fnic_sdev_init(struct scsi_device * sdev)103 static int fnic_sdev_init(struct scsi_device *sdev)
104 {
105 struct fc_rport *rport = starget_to_rport(scsi_target(sdev));
106
107 if (!rport || fc_remote_port_chkready(rport))
108 return -ENXIO;
109
110 scsi_change_queue_depth(sdev, fnic_max_qdepth);
111 return 0;
112 }
113
114 static const struct scsi_host_template fnic_host_template = {
115 .module = THIS_MODULE,
116 .name = DRV_NAME,
117 .queuecommand = fnic_queuecommand,
118 .eh_timed_out = fc_eh_timed_out,
119 .eh_abort_handler = fnic_abort_cmd,
120 .eh_device_reset_handler = fnic_device_reset,
121 .eh_host_reset_handler = fnic_eh_host_reset_handler,
122 .sdev_init = fnic_sdev_init,
123 .change_queue_depth = scsi_change_queue_depth,
124 .this_id = -1,
125 .cmd_per_lun = 3,
126 .can_queue = FNIC_DFLT_IO_REQ,
127 .sg_tablesize = FNIC_MAX_SG_DESC_CNT,
128 .max_sectors = 0xffff,
129 .shost_groups = fnic_host_groups,
130 .track_queue_depth = 1,
131 .cmd_size = sizeof(struct fnic_cmd_priv),
132 .map_queues = fnic_mq_map_queues_cpus,
133 };
134
135 static void
fnic_set_rport_dev_loss_tmo(struct fc_rport * rport,u32 timeout)136 fnic_set_rport_dev_loss_tmo(struct fc_rport *rport, u32 timeout)
137 {
138 if (timeout)
139 rport->dev_loss_tmo = timeout;
140 else
141 rport->dev_loss_tmo = 1;
142 }
143
144 static void fnic_get_host_speed(struct Scsi_Host *shost);
145 static struct scsi_transport_template *fnic_fc_transport;
146 static struct fc_host_statistics *fnic_get_stats(struct Scsi_Host *);
147 static void fnic_reset_host_stats(struct Scsi_Host *);
148
149 static struct fc_function_template fnic_fc_functions = {
150
151 .show_host_node_name = 1,
152 .show_host_port_name = 1,
153 .show_host_supported_classes = 1,
154 .show_host_supported_fc4s = 1,
155 .show_host_active_fc4s = 1,
156 .show_host_maxframe_size = 1,
157 .show_host_port_id = 1,
158 .show_host_supported_speeds = 1,
159 .get_host_speed = fnic_get_host_speed,
160 .show_host_speed = 1,
161 .show_host_port_type = 1,
162 .get_host_port_state = fnic_get_host_port_state,
163 .show_host_port_state = 1,
164 .show_host_symbolic_name = 1,
165 .show_rport_maxframe_size = 1,
166 .show_rport_supported_classes = 1,
167 .show_host_fabric_name = 1,
168 .show_starget_node_name = 1,
169 .show_starget_port_name = 1,
170 .show_starget_port_id = 1,
171 .show_rport_dev_loss_tmo = 1,
172 .set_rport_dev_loss_tmo = fnic_set_rport_dev_loss_tmo,
173 .issue_fc_host_lip = fnic_issue_fc_host_lip,
174 .get_fc_host_stats = fnic_get_stats,
175 .reset_fc_host_stats = fnic_reset_host_stats,
176 .dd_fcrport_size = sizeof(struct rport_dd_data_s),
177 .terminate_rport_io = fnic_terminate_rport_io,
178 .bsg_request = NULL,
179 };
180
fnic_get_host_speed(struct Scsi_Host * shost)181 static void fnic_get_host_speed(struct Scsi_Host *shost)
182 {
183 struct fnic *fnic = *((struct fnic **) shost_priv(shost));
184 u32 port_speed = vnic_dev_port_speed(fnic->vdev);
185 struct fnic_stats *fnic_stats = &fnic->fnic_stats;
186
187 FNIC_MAIN_DBG(KERN_INFO, fnic->host, fnic->fnic_num,
188 "port_speed: %d Mbps", port_speed);
189 atomic64_set(&fnic_stats->misc_stats.port_speed_in_mbps, port_speed);
190
191 /* Add in other values as they get defined in fw */
192 switch (port_speed) {
193 case DCEM_PORTSPEED_1G:
194 fc_host_speed(shost) = FC_PORTSPEED_1GBIT;
195 break;
196 case DCEM_PORTSPEED_2G:
197 fc_host_speed(shost) = FC_PORTSPEED_2GBIT;
198 break;
199 case DCEM_PORTSPEED_4G:
200 fc_host_speed(shost) = FC_PORTSPEED_4GBIT;
201 break;
202 case DCEM_PORTSPEED_8G:
203 fc_host_speed(shost) = FC_PORTSPEED_8GBIT;
204 break;
205 case DCEM_PORTSPEED_10G:
206 fc_host_speed(shost) = FC_PORTSPEED_10GBIT;
207 break;
208 case DCEM_PORTSPEED_16G:
209 fc_host_speed(shost) = FC_PORTSPEED_16GBIT;
210 break;
211 case DCEM_PORTSPEED_20G:
212 fc_host_speed(shost) = FC_PORTSPEED_20GBIT;
213 break;
214 case DCEM_PORTSPEED_25G:
215 fc_host_speed(shost) = FC_PORTSPEED_25GBIT;
216 break;
217 case DCEM_PORTSPEED_32G:
218 fc_host_speed(shost) = FC_PORTSPEED_32GBIT;
219 break;
220 case DCEM_PORTSPEED_40G:
221 case DCEM_PORTSPEED_4x10G:
222 fc_host_speed(shost) = FC_PORTSPEED_40GBIT;
223 break;
224 case DCEM_PORTSPEED_50G:
225 fc_host_speed(shost) = FC_PORTSPEED_50GBIT;
226 break;
227 case DCEM_PORTSPEED_64G:
228 fc_host_speed(shost) = FC_PORTSPEED_64GBIT;
229 break;
230 case DCEM_PORTSPEED_100G:
231 fc_host_speed(shost) = FC_PORTSPEED_100GBIT;
232 break;
233 case DCEM_PORTSPEED_128G:
234 fc_host_speed(shost) = FC_PORTSPEED_128GBIT;
235 break;
236 default:
237 FNIC_MAIN_DBG(KERN_INFO, fnic->host, fnic->fnic_num,
238 "Unknown FC speed: %d Mbps", port_speed);
239 fc_host_speed(shost) = FC_PORTSPEED_UNKNOWN;
240 break;
241 }
242 }
243
244 /* Placeholder function */
fnic_get_stats(struct Scsi_Host * host)245 static struct fc_host_statistics *fnic_get_stats(struct Scsi_Host *host)
246 {
247 int ret;
248 struct fnic *fnic = *((struct fnic **) shost_priv(host));
249 struct fc_host_statistics *stats = &fnic->fnic_stats.host_stats;
250 struct vnic_stats *vs;
251 unsigned long flags;
252
253 if (time_before
254 (jiffies, fnic->stats_time + HZ / FNIC_STATS_RATE_LIMIT))
255 return stats;
256 fnic->stats_time = jiffies;
257
258 spin_lock_irqsave(&fnic->fnic_lock, flags);
259 ret = vnic_dev_stats_dump(fnic->vdev, &fnic->stats);
260 spin_unlock_irqrestore(&fnic->fnic_lock, flags);
261
262 if (ret) {
263 FNIC_MAIN_DBG(KERN_DEBUG, fnic->host, fnic->fnic_num,
264 "fnic: Get vnic stats failed: 0x%x", ret);
265 return stats;
266 }
267 vs = fnic->stats;
268 stats->tx_frames = vs->tx.tx_unicast_frames_ok;
269 stats->tx_words = vs->tx.tx_unicast_bytes_ok / 4;
270 stats->rx_frames = vs->rx.rx_unicast_frames_ok;
271 stats->rx_words = vs->rx.rx_unicast_bytes_ok / 4;
272 stats->error_frames = vs->tx.tx_errors + vs->rx.rx_errors;
273 stats->dumped_frames = vs->tx.tx_drops + vs->rx.rx_drop;
274 stats->invalid_crc_count = vs->rx.rx_crc_errors;
275 stats->seconds_since_last_reset =
276 (jiffies - fnic->stats_reset_time) / HZ;
277 stats->fcp_input_megabytes = div_u64(fnic->fcp_input_bytes, 1000000);
278 stats->fcp_output_megabytes = div_u64(fnic->fcp_output_bytes, 1000000);
279 return stats;
280 }
281
282 /*
283 * fnic_dump_fchost_stats
284 * note : dumps fc_statistics into system logs
285 */
fnic_dump_fchost_stats(struct Scsi_Host * host,struct fc_host_statistics * stats)286 void fnic_dump_fchost_stats(struct Scsi_Host *host,
287 struct fc_host_statistics *stats)
288 {
289 FNIC_MAIN_NOTE(KERN_NOTICE, host,
290 "fnic: seconds since last reset = %llu\n",
291 stats->seconds_since_last_reset);
292 FNIC_MAIN_NOTE(KERN_NOTICE, host,
293 "fnic: tx frames = %llu\n",
294 stats->tx_frames);
295 FNIC_MAIN_NOTE(KERN_NOTICE, host,
296 "fnic: tx words = %llu\n",
297 stats->tx_words);
298 FNIC_MAIN_NOTE(KERN_NOTICE, host,
299 "fnic: rx frames = %llu\n",
300 stats->rx_frames);
301 FNIC_MAIN_NOTE(KERN_NOTICE, host,
302 "fnic: rx words = %llu\n",
303 stats->rx_words);
304 FNIC_MAIN_NOTE(KERN_NOTICE, host,
305 "fnic: lip count = %llu\n",
306 stats->lip_count);
307 FNIC_MAIN_NOTE(KERN_NOTICE, host,
308 "fnic: nos count = %llu\n",
309 stats->nos_count);
310 FNIC_MAIN_NOTE(KERN_NOTICE, host,
311 "fnic: error frames = %llu\n",
312 stats->error_frames);
313 FNIC_MAIN_NOTE(KERN_NOTICE, host,
314 "fnic: dumped frames = %llu\n",
315 stats->dumped_frames);
316 FNIC_MAIN_NOTE(KERN_NOTICE, host,
317 "fnic: link failure count = %llu\n",
318 stats->link_failure_count);
319 FNIC_MAIN_NOTE(KERN_NOTICE, host,
320 "fnic: loss of sync count = %llu\n",
321 stats->loss_of_sync_count);
322 FNIC_MAIN_NOTE(KERN_NOTICE, host,
323 "fnic: loss of signal count = %llu\n",
324 stats->loss_of_signal_count);
325 FNIC_MAIN_NOTE(KERN_NOTICE, host,
326 "fnic: prim seq protocol err count = %llu\n",
327 stats->prim_seq_protocol_err_count);
328 FNIC_MAIN_NOTE(KERN_NOTICE, host,
329 "fnic: invalid tx word count= %llu\n",
330 stats->invalid_tx_word_count);
331 FNIC_MAIN_NOTE(KERN_NOTICE, host,
332 "fnic: invalid crc count = %llu\n",
333 stats->invalid_crc_count);
334 FNIC_MAIN_NOTE(KERN_NOTICE, host,
335 "fnic: fcp input requests = %llu\n",
336 stats->fcp_input_requests);
337 FNIC_MAIN_NOTE(KERN_NOTICE, host,
338 "fnic: fcp output requests = %llu\n",
339 stats->fcp_output_requests);
340 FNIC_MAIN_NOTE(KERN_NOTICE, host,
341 "fnic: fcp control requests = %llu\n",
342 stats->fcp_control_requests);
343 FNIC_MAIN_NOTE(KERN_NOTICE, host,
344 "fnic: fcp input megabytes = %llu\n",
345 stats->fcp_input_megabytes);
346 FNIC_MAIN_NOTE(KERN_NOTICE, host,
347 "fnic: fcp output megabytes = %llu\n",
348 stats->fcp_output_megabytes);
349 return;
350 }
351
352 /*
353 * fnic_reset_host_stats : clears host stats
354 * note : called when reset_statistics set under sysfs dir
355 */
fnic_reset_host_stats(struct Scsi_Host * host)356 static void fnic_reset_host_stats(struct Scsi_Host *host)
357 {
358 int ret;
359 struct fnic *fnic = *((struct fnic **) shost_priv(host));
360 struct fc_host_statistics *stats;
361 unsigned long flags;
362
363 /* dump current stats, before clearing them */
364 stats = fnic_get_stats(host);
365 fnic_dump_fchost_stats(host, stats);
366
367 spin_lock_irqsave(&fnic->fnic_lock, flags);
368 ret = vnic_dev_stats_clear(fnic->vdev);
369 spin_unlock_irqrestore(&fnic->fnic_lock, flags);
370
371 if (ret) {
372 FNIC_MAIN_DBG(KERN_DEBUG, fnic->host, fnic->fnic_num,
373 "fnic: Reset vnic stats failed"
374 " 0x%x", ret);
375 return;
376 }
377 fnic->stats_reset_time = jiffies;
378 memset(stats, 0, sizeof(*stats));
379
380 return;
381 }
382
fnic_log_q_error(struct fnic * fnic)383 void fnic_log_q_error(struct fnic *fnic)
384 {
385 unsigned int i;
386 u32 error_status;
387
388 for (i = 0; i < fnic->raw_wq_count; i++) {
389 error_status = ioread32(&fnic->wq[i].ctrl->error_status);
390 if (error_status)
391 dev_err(&fnic->pdev->dev, "WQ[%d] error_status %d\n", i, error_status);
392 }
393
394 for (i = 0; i < fnic->rq_count; i++) {
395 error_status = ioread32(&fnic->rq[i].ctrl->error_status);
396 if (error_status)
397 dev_err(&fnic->pdev->dev, "RQ[%d] error_status %d\n", i, error_status);
398 }
399
400 for (i = 0; i < fnic->wq_copy_count; i++) {
401 error_status = ioread32(&fnic->hw_copy_wq[i].ctrl->error_status);
402 if (error_status)
403 dev_err(&fnic->pdev->dev, "CWQ[%d] error_status %d\n", i, error_status);
404 }
405 }
406
fnic_handle_link_event(struct fnic * fnic)407 void fnic_handle_link_event(struct fnic *fnic)
408 {
409 unsigned long flags;
410
411 spin_lock_irqsave(&fnic->fnic_lock, flags);
412 if (fnic->stop_rx_link_events) {
413 spin_unlock_irqrestore(&fnic->fnic_lock, flags);
414 return;
415 }
416 spin_unlock_irqrestore(&fnic->fnic_lock, flags);
417
418 queue_work(fnic_event_queue, &fnic->link_work);
419
420 }
421
fnic_notify_set(struct fnic * fnic)422 static int fnic_notify_set(struct fnic *fnic)
423 {
424 int err;
425
426 switch (vnic_dev_get_intr_mode(fnic->vdev)) {
427 case VNIC_DEV_INTR_MODE_INTX:
428 err = vnic_dev_notify_set(fnic->vdev, FNIC_INTX_NOTIFY);
429 break;
430 case VNIC_DEV_INTR_MODE_MSI:
431 err = vnic_dev_notify_set(fnic->vdev, -1);
432 break;
433 case VNIC_DEV_INTR_MODE_MSIX:
434 err = vnic_dev_notify_set(fnic->vdev, fnic->wq_copy_count + fnic->copy_wq_base);
435 break;
436 default:
437 dev_err(&fnic->pdev->dev, "Interrupt mode should be set up"
438 " before devcmd notify set %d\n",
439 vnic_dev_get_intr_mode(fnic->vdev));
440 err = -1;
441 break;
442 }
443
444 return err;
445 }
446
fnic_notify_timer(struct timer_list * t)447 static void fnic_notify_timer(struct timer_list *t)
448 {
449 struct fnic *fnic = from_timer(fnic, t, notify_timer);
450
451 fnic_handle_link_event(fnic);
452 mod_timer(&fnic->notify_timer,
453 round_jiffies(jiffies + FNIC_NOTIFY_TIMER_PERIOD));
454 }
455
fnic_notify_timer_start(struct fnic * fnic)456 static void fnic_notify_timer_start(struct fnic *fnic)
457 {
458 switch (vnic_dev_get_intr_mode(fnic->vdev)) {
459 case VNIC_DEV_INTR_MODE_MSI:
460 /*
461 * Schedule first timeout immediately. The driver is
462 * initiatialized and ready to look for link up notification
463 */
464 mod_timer(&fnic->notify_timer, jiffies);
465 break;
466 default:
467 /* Using intr for notification for INTx/MSI-X */
468 break;
469 }
470 }
471
fnic_dev_wait(struct vnic_dev * vdev,int (* start)(struct vnic_dev *,int),int (* finished)(struct vnic_dev *,int *),int arg)472 static int fnic_dev_wait(struct vnic_dev *vdev,
473 int (*start)(struct vnic_dev *, int),
474 int (*finished)(struct vnic_dev *, int *),
475 int arg)
476 {
477 unsigned long time;
478 int done;
479 int err;
480 int count;
481
482 count = 0;
483
484 err = start(vdev, arg);
485 if (err)
486 return err;
487
488 /* Wait for func to complete.
489 * Sometime schedule_timeout_uninterruptible take long time
490 * to wake up so we do not retry as we are only waiting for
491 * 2 seconds in while loop. By adding count, we make sure
492 * we try atleast three times before returning -ETIMEDOUT
493 */
494 time = jiffies + (HZ * 2);
495 do {
496 err = finished(vdev, &done);
497 count++;
498 if (err)
499 return err;
500 if (done)
501 return 0;
502 schedule_timeout_uninterruptible(HZ / 10);
503 } while (time_after(time, jiffies) || (count < 3));
504
505 return -ETIMEDOUT;
506 }
507
fnic_cleanup(struct fnic * fnic)508 static int fnic_cleanup(struct fnic *fnic)
509 {
510 unsigned int i;
511 int err;
512 int raw_wq_rq_counts;
513
514 vnic_dev_disable(fnic->vdev);
515 for (i = 0; i < fnic->intr_count; i++)
516 vnic_intr_mask(&fnic->intr[i]);
517
518 for (i = 0; i < fnic->rq_count; i++) {
519 err = vnic_rq_disable(&fnic->rq[i]);
520 if (err)
521 return err;
522 }
523 for (i = 0; i < fnic->raw_wq_count; i++) {
524 err = vnic_wq_disable(&fnic->wq[i]);
525 if (err)
526 return err;
527 }
528 for (i = 0; i < fnic->wq_copy_count; i++) {
529 err = vnic_wq_copy_disable(&fnic->hw_copy_wq[i]);
530 if (err)
531 return err;
532 raw_wq_rq_counts = fnic->raw_wq_count + fnic->rq_count;
533 fnic_wq_copy_cmpl_handler(fnic, -1, i + raw_wq_rq_counts);
534 }
535
536 /* Clean up completed IOs and FCS frames */
537 fnic_wq_cmpl_handler(fnic, -1);
538 fnic_rq_cmpl_handler(fnic, -1);
539
540 /* Clean up the IOs and FCS frames that have not completed */
541 for (i = 0; i < fnic->raw_wq_count; i++)
542 vnic_wq_clean(&fnic->wq[i], fnic_free_wq_buf);
543 for (i = 0; i < fnic->rq_count; i++)
544 vnic_rq_clean(&fnic->rq[i], fnic_free_rq_buf);
545 for (i = 0; i < fnic->wq_copy_count; i++)
546 vnic_wq_copy_clean(&fnic->hw_copy_wq[i],
547 fnic_wq_copy_cleanup_handler);
548
549 for (i = 0; i < fnic->cq_count; i++)
550 vnic_cq_clean(&fnic->cq[i]);
551 for (i = 0; i < fnic->intr_count; i++)
552 vnic_intr_clean(&fnic->intr[i]);
553
554 mempool_destroy(fnic->io_req_pool);
555 mempool_destroy(fnic->frame_pool);
556 mempool_destroy(fnic->frame_elem_pool);
557 for (i = 0; i < FNIC_SGL_NUM_CACHES; i++)
558 mempool_destroy(fnic->io_sgl_pool[i]);
559
560 return 0;
561 }
562
fnic_iounmap(struct fnic * fnic)563 static void fnic_iounmap(struct fnic *fnic)
564 {
565 if (fnic->bar0.vaddr)
566 iounmap(fnic->bar0.vaddr);
567 }
568
fnic_set_vlan(struct fnic * fnic,u16 vlan_id)569 static void fnic_set_vlan(struct fnic *fnic, u16 vlan_id)
570 {
571 vnic_dev_set_default_vlan(fnic->vdev, vlan_id);
572 }
573
fnic_scsi_init(struct fnic * fnic)574 static void fnic_scsi_init(struct fnic *fnic)
575 {
576 struct Scsi_Host *host = fnic->host;
577
578 snprintf(fnic->name, sizeof(fnic->name) - 1, "%s%d", DRV_NAME,
579 host->host_no);
580
581 host->transportt = fnic_fc_transport;
582 }
583
fnic_free_ioreq_tables_mq(struct fnic * fnic)584 static void fnic_free_ioreq_tables_mq(struct fnic *fnic)
585 {
586 int hwq;
587
588 for (hwq = 0; hwq < fnic->wq_copy_count; hwq++)
589 kfree(fnic->sw_copy_wq[hwq].io_req_table);
590 }
591
fnic_scsi_drv_init(struct fnic * fnic)592 static int fnic_scsi_drv_init(struct fnic *fnic)
593 {
594 struct Scsi_Host *host = fnic->host;
595 int err;
596 struct pci_dev *pdev = fnic->pdev;
597 struct fnic_iport_s *iport = &fnic->iport;
598 int hwq;
599
600 /* Configure maximum outstanding IO reqs*/
601 if (fnic->config.io_throttle_count != FNIC_UCSM_DFLT_THROTTLE_CNT_BLD)
602 host->can_queue = min_t(u32, FNIC_MAX_IO_REQ,
603 max_t(u32, FNIC_MIN_IO_REQ,
604 fnic->config.io_throttle_count));
605
606 fnic->fnic_max_tag_id = host->can_queue;
607 host->max_lun = fnic->config.luns_per_tgt;
608 host->max_id = FNIC_MAX_FCP_TARGET;
609 host->max_cmd_len = FNIC_FCOE_MAX_CMD_LEN;
610
611 host->nr_hw_queues = fnic->wq_copy_count;
612
613 dev_info(&fnic->pdev->dev, "fnic: can_queue: %d max_lun: %llu",
614 host->can_queue, host->max_lun);
615
616 dev_info(&fnic->pdev->dev, "fnic: max_id: %d max_cmd_len: %d nr_hw_queues: %d",
617 host->max_id, host->max_cmd_len, host->nr_hw_queues);
618
619 for (hwq = 0; hwq < fnic->wq_copy_count; hwq++) {
620 fnic->sw_copy_wq[hwq].ioreq_table_size = fnic->fnic_max_tag_id;
621 fnic->sw_copy_wq[hwq].io_req_table =
622 kzalloc((fnic->sw_copy_wq[hwq].ioreq_table_size + 1) *
623 sizeof(struct fnic_io_req *), GFP_KERNEL);
624
625 if (!fnic->sw_copy_wq[hwq].io_req_table) {
626 fnic_free_ioreq_tables_mq(fnic);
627 return -ENOMEM;
628 }
629 }
630
631 dev_info(&fnic->pdev->dev, "fnic copy wqs: %d, Q0 ioreq table size: %d\n",
632 fnic->wq_copy_count, fnic->sw_copy_wq[0].ioreq_table_size);
633
634 fnic_scsi_init(fnic);
635
636 err = scsi_add_host(fnic->host, &pdev->dev);
637 if (err) {
638 dev_err(&fnic->pdev->dev, "fnic: scsi add host failed: aborting\n");
639 return err;
640 }
641 fc_host_maxframe_size(fnic->host) = iport->max_payload_size;
642 fc_host_dev_loss_tmo(fnic->host) =
643 fnic->config.port_down_timeout / 1000;
644 sprintf(fc_host_symbolic_name(fnic->host),
645 DRV_NAME " v" DRV_VERSION " over %s", fnic->name);
646 fc_host_port_type(fnic->host) = FC_PORTTYPE_NPORT;
647 fc_host_node_name(fnic->host) = iport->wwnn;
648 fc_host_port_name(fnic->host) = iport->wwpn;
649 fc_host_supported_classes(fnic->host) = FC_COS_CLASS3;
650 memset(fc_host_supported_fc4s(fnic->host), 0,
651 sizeof(fc_host_supported_fc4s(fnic->host)));
652 fc_host_supported_fc4s(fnic->host)[2] = 1;
653 fc_host_supported_fc4s(fnic->host)[7] = 1;
654 fc_host_supported_speeds(fnic->host) = 0;
655 fc_host_supported_speeds(fnic->host) |= FC_PORTSPEED_8GBIT;
656
657 dev_info(&fnic->pdev->dev, "shost_data: 0x%p\n", fnic->host->shost_data);
658 if (fnic->host->shost_data != NULL) {
659 if (fnic_tgt_id_binding == 0) {
660 dev_info(&fnic->pdev->dev, "Setting target binding to NONE\n");
661 fc_host_tgtid_bind_type(fnic->host) = FC_TGTID_BIND_NONE;
662 } else {
663 dev_info(&fnic->pdev->dev, "Setting target binding to WWPN\n");
664 fc_host_tgtid_bind_type(fnic->host) = FC_TGTID_BIND_BY_WWPN;
665 }
666 }
667
668 fnic->io_req_pool = mempool_create_slab_pool(2, fnic_io_req_cache);
669 if (!fnic->io_req_pool) {
670 scsi_remove_host(fnic->host);
671 return -ENOMEM;
672 }
673
674 return 0;
675 }
676
fnic_mq_map_queues_cpus(struct Scsi_Host * host)677 void fnic_mq_map_queues_cpus(struct Scsi_Host *host)
678 {
679 struct fnic *fnic = *((struct fnic **) shost_priv(host));
680 struct pci_dev *l_pdev = fnic->pdev;
681 int intr_mode = fnic->config.intr_mode;
682 struct blk_mq_queue_map *qmap = &host->tag_set.map[HCTX_TYPE_DEFAULT];
683
684 if (intr_mode == VNIC_DEV_INTR_MODE_MSI || intr_mode == VNIC_DEV_INTR_MODE_INTX) {
685 FNIC_MAIN_DBG(KERN_ERR, fnic->host, fnic->fnic_num,
686 "intr_mode is not msix\n");
687 return;
688 }
689
690 FNIC_MAIN_DBG(KERN_INFO, fnic->host, fnic->fnic_num,
691 "qmap->nr_queues: %d\n", qmap->nr_queues);
692
693 if (l_pdev == NULL) {
694 FNIC_MAIN_DBG(KERN_ERR, fnic->host, fnic->fnic_num,
695 "l_pdev is null\n");
696 return;
697 }
698
699 blk_mq_map_hw_queues(qmap, &l_pdev->dev, FNIC_PCI_OFFSET);
700 }
701
fnic_probe(struct pci_dev * pdev,const struct pci_device_id * ent)702 static int fnic_probe(struct pci_dev *pdev, const struct pci_device_id *ent)
703 {
704 struct Scsi_Host *host = NULL;
705 struct fnic *fnic;
706 mempool_t *pool;
707 struct fnic_iport_s *iport;
708 int err = 0;
709 int fnic_id = 0;
710 int i;
711 unsigned long flags;
712 char *desc, *subsys_desc;
713 int len;
714
715 /*
716 * Allocate fnic
717 */
718 fnic = kzalloc(sizeof(struct fnic), GFP_KERNEL);
719 if (!fnic) {
720 err = -ENOMEM;
721 goto err_out_fnic_alloc;
722 }
723
724 iport = &fnic->iport;
725
726 fnic_id = ida_alloc(&fnic_ida, GFP_KERNEL);
727 if (fnic_id < 0) {
728 dev_err(&pdev->dev, "Unable to alloc fnic ID\n");
729 err = fnic_id;
730 goto err_out_ida_alloc;
731 }
732
733 fnic->pdev = pdev;
734 fnic->fnic_num = fnic_id;
735
736 /* Find model name from PCIe subsys ID */
737 if (fnic_get_desc_by_devid(pdev, &desc, &subsys_desc) == 0) {
738 dev_info(&fnic->pdev->dev, "Model: %s\n", subsys_desc);
739
740 /* Update FDMI model */
741 fnic->subsys_desc_len = strlen(subsys_desc);
742 len = ARRAY_SIZE(fnic->subsys_desc);
743 if (fnic->subsys_desc_len > len)
744 fnic->subsys_desc_len = len;
745 memcpy(fnic->subsys_desc, subsys_desc, fnic->subsys_desc_len);
746 dev_info(&fnic->pdev->dev, "FDMI Model: %s\n", fnic->subsys_desc);
747 } else {
748 fnic->subsys_desc_len = 0;
749 dev_info(&fnic->pdev->dev, "Model: %s subsys_id: 0x%04x\n", "Unknown",
750 pdev->subsystem_device);
751 }
752
753 err = pci_enable_device(pdev);
754 if (err) {
755 dev_err(&fnic->pdev->dev, "Cannot enable PCI device, aborting.\n");
756 goto err_out_pci_enable_device;
757 }
758
759 err = pci_request_regions(pdev, DRV_NAME);
760 if (err) {
761 dev_err(&fnic->pdev->dev, "Cannot enable PCI resources, aborting\n");
762 goto err_out_pci_request_regions;
763 }
764
765 pci_set_master(pdev);
766
767 /* Query PCI controller on system for DMA addressing
768 * limitation for the device. Try 47-bit first, and
769 * fail to 32-bit. Cisco VIC supports 47 bits only.
770 */
771 err = dma_set_mask_and_coherent(&pdev->dev, DMA_BIT_MASK(47));
772 if (err) {
773 err = dma_set_mask_and_coherent(&pdev->dev, DMA_BIT_MASK(32));
774 if (err) {
775 dev_err(&fnic->pdev->dev, "No usable DMA configuration "
776 "aborting\n");
777 goto err_out_set_dma_mask;
778 }
779 }
780
781 /* Map vNIC resources from BAR0 */
782 if (!(pci_resource_flags(pdev, 0) & IORESOURCE_MEM)) {
783 dev_err(&fnic->pdev->dev, "BAR0 not memory-map'able, aborting.\n");
784 err = -ENODEV;
785 goto err_out_map_bar;
786 }
787
788 fnic->bar0.vaddr = pci_iomap(pdev, 0, 0);
789 fnic->bar0.bus_addr = pci_resource_start(pdev, 0);
790 fnic->bar0.len = pci_resource_len(pdev, 0);
791
792 if (!fnic->bar0.vaddr) {
793 dev_err(&fnic->pdev->dev, "Cannot memory-map BAR0 res hdr, "
794 "aborting.\n");
795 err = -ENODEV;
796 goto err_out_fnic_map_bar;
797 }
798
799 fnic->vdev = vnic_dev_register(NULL, fnic, pdev, &fnic->bar0);
800 if (!fnic->vdev) {
801 dev_err(&fnic->pdev->dev, "vNIC registration failed, "
802 "aborting.\n");
803 err = -ENODEV;
804 goto err_out_dev_register;
805 }
806
807 err = vnic_dev_cmd_init(fnic->vdev);
808 if (err) {
809 dev_err(&fnic->pdev->dev, "vnic_dev_cmd_init() returns %d, aborting\n",
810 err);
811 goto err_out_dev_cmd_init;
812 }
813
814 err = fnic_dev_wait(fnic->vdev, vnic_dev_open,
815 vnic_dev_open_done, CMD_OPENF_RQ_ENABLE_THEN_POST);
816 if (err) {
817 dev_err(&fnic->pdev->dev, "vNIC dev open failed, aborting.\n");
818 goto err_out_dev_open;
819 }
820
821 err = vnic_dev_init(fnic->vdev, 0);
822 if (err) {
823 dev_err(&fnic->pdev->dev, "vNIC dev init failed, aborting.\n");
824 goto err_out_dev_init;
825 }
826
827 err = vnic_dev_mac_addr(fnic->vdev, iport->hwmac);
828 if (err) {
829 dev_err(&fnic->pdev->dev, "vNIC get MAC addr failed\n");
830 goto err_out_dev_mac_addr;
831 }
832 /* set data_src for point-to-point mode and to keep it non-zero */
833 memcpy(fnic->data_src_addr, iport->hwmac, ETH_ALEN);
834
835 /* Get vNIC configuration */
836 err = fnic_get_vnic_config(fnic);
837 if (err) {
838 dev_err(&fnic->pdev->dev, "Get vNIC configuration failed, "
839 "aborting.\n");
840 goto err_out_fnic_get_config;
841 }
842
843 switch (fnic->config.flags & 0xff0) {
844 case VFCF_FC_INITIATOR:
845 {
846 host =
847 scsi_host_alloc(&fnic_host_template,
848 sizeof(struct fnic *));
849 if (!host) {
850 dev_err(&fnic->pdev->dev, "Unable to allocate scsi host\n");
851 err = -ENOMEM;
852 goto err_out_scsi_host_alloc;
853 }
854 *((struct fnic **) shost_priv(host)) = fnic;
855
856 fnic->host = host;
857 fnic->role = FNIC_ROLE_FCP_INITIATOR;
858 dev_info(&fnic->pdev->dev, "fnic: %d is scsi initiator\n",
859 fnic->fnic_num);
860 }
861 break;
862 default:
863 dev_info(&fnic->pdev->dev, "fnic: %d has no role defined\n", fnic->fnic_num);
864 err = -EINVAL;
865 goto err_out_fnic_role;
866 }
867
868 /* Setup PCI resources */
869 pci_set_drvdata(pdev, fnic);
870
871 fnic_get_res_counts(fnic);
872
873 err = fnic_set_intr_mode(fnic);
874 if (err) {
875 dev_err(&fnic->pdev->dev, "Failed to set intr mode, "
876 "aborting.\n");
877 goto err_out_fnic_set_intr_mode;
878 }
879
880 err = fnic_alloc_vnic_resources(fnic);
881 if (err) {
882 dev_err(&fnic->pdev->dev, "Failed to alloc vNIC resources, "
883 "aborting.\n");
884 goto err_out_fnic_alloc_vnic_res;
885 }
886 dev_info(&fnic->pdev->dev, "fnic copy wqs: %d, Q0 ioreq table size: %d\n",
887 fnic->wq_copy_count, fnic->sw_copy_wq[0].ioreq_table_size);
888
889 /* initialize all fnic locks */
890 spin_lock_init(&fnic->fnic_lock);
891
892 for (i = 0; i < FNIC_WQ_MAX; i++)
893 spin_lock_init(&fnic->wq_lock[i]);
894
895 for (i = 0; i < FNIC_WQ_COPY_MAX; i++) {
896 spin_lock_init(&fnic->wq_copy_lock[i]);
897 fnic->wq_copy_desc_low[i] = DESC_CLEAN_LOW_WATERMARK;
898 fnic->fw_ack_recd[i] = 0;
899 fnic->fw_ack_index[i] = -1;
900 }
901
902 pool = mempool_create_slab_pool(2, fnic_sgl_cache[FNIC_SGL_CACHE_DFLT]);
903 if (!pool) {
904 err = -ENOMEM;
905 goto err_out_free_resources;
906 }
907 fnic->io_sgl_pool[FNIC_SGL_CACHE_DFLT] = pool;
908
909 pool = mempool_create_slab_pool(2, fnic_sgl_cache[FNIC_SGL_CACHE_MAX]);
910 if (!pool) {
911 err = -ENOMEM;
912 goto err_out_free_dflt_pool;
913 }
914 fnic->io_sgl_pool[FNIC_SGL_CACHE_MAX] = pool;
915
916 pool = mempool_create_slab_pool(FDLS_MIN_FRAMES, fdls_frame_cache);
917 if (!pool) {
918 err = -ENOMEM;
919 goto err_out_fdls_frame_pool;
920 }
921 fnic->frame_pool = pool;
922
923 pool = mempool_create_slab_pool(FDLS_MIN_FRAME_ELEM,
924 fdls_frame_elem_cache);
925 if (!pool) {
926 err = -ENOMEM;
927 goto err_out_fdls_frame_elem_pool;
928 }
929 fnic->frame_elem_pool = pool;
930
931 /* setup vlan config, hw inserts vlan header */
932 fnic->vlan_hw_insert = 1;
933 fnic->vlan_id = 0;
934
935 if (fnic->config.flags & VFCF_FIP_CAPABLE) {
936 dev_info(&fnic->pdev->dev, "firmware supports FIP\n");
937 /* enable directed and multicast */
938 vnic_dev_packet_filter(fnic->vdev, 1, 1, 0, 0, 0);
939 vnic_dev_add_addr(fnic->vdev, FIP_ALL_ENODE_MACS);
940 vnic_dev_add_addr(fnic->vdev, iport->hwmac);
941 spin_lock_init(&fnic->vlans_lock);
942 INIT_WORK(&fnic->fip_frame_work, fnic_handle_fip_frame);
943 INIT_LIST_HEAD(&fnic->fip_frame_queue);
944 INIT_LIST_HEAD(&fnic->vlan_list);
945 timer_setup(&fnic->retry_fip_timer, fnic_handle_fip_timer, 0);
946 timer_setup(&fnic->fcs_ka_timer, fnic_handle_fcs_ka_timer, 0);
947 timer_setup(&fnic->enode_ka_timer, fnic_handle_enode_ka_timer, 0);
948 timer_setup(&fnic->vn_ka_timer, fnic_handle_vn_ka_timer, 0);
949 fnic->set_vlan = fnic_set_vlan;
950 } else {
951 dev_info(&fnic->pdev->dev, "firmware uses non-FIP mode\n");
952 }
953 fnic->state = FNIC_IN_FC_MODE;
954
955 atomic_set(&fnic->in_flight, 0);
956 fnic->state_flags = FNIC_FLAGS_NONE;
957
958 /* Enable hardware stripping of vlan header on ingress */
959 fnic_set_nic_config(fnic, 0, 0, 0, 0, 0, 0, 1);
960
961 /* Setup notification buffer area */
962 err = fnic_notify_set(fnic);
963 if (err) {
964 dev_err(&fnic->pdev->dev, "Failed to alloc notify buffer, aborting.\n");
965 goto err_out_fnic_notify_set;
966 }
967
968 /* Setup notify timer when using MSI interrupts */
969 if (vnic_dev_get_intr_mode(fnic->vdev) == VNIC_DEV_INTR_MODE_MSI)
970 timer_setup(&fnic->notify_timer, fnic_notify_timer, 0);
971
972 /* allocate RQ buffers and post them to RQ*/
973 for (i = 0; i < fnic->rq_count; i++) {
974 err = vnic_rq_fill(&fnic->rq[i], fnic_alloc_rq_frame);
975 if (err) {
976 dev_err(&fnic->pdev->dev, "fnic_alloc_rq_frame can't alloc "
977 "frame\n");
978 goto err_out_alloc_rq_buf;
979 }
980 }
981
982 init_completion(&fnic->reset_completion_wait);
983
984 /* Start local port initialization */
985 iport->max_flogi_retries = fnic->config.flogi_retries;
986 iport->max_plogi_retries = fnic->config.plogi_retries;
987 iport->plogi_timeout = fnic->config.plogi_timeout;
988 iport->service_params =
989 (FNIC_FCP_SP_INITIATOR | FNIC_FCP_SP_RD_XRDY_DIS |
990 FNIC_FCP_SP_CONF_CMPL);
991 if (fnic->config.flags & VFCF_FCP_SEQ_LVL_ERR)
992 iport->service_params |= FNIC_FCP_SP_RETRY;
993
994 iport->boot_time = jiffies;
995 iport->e_d_tov = fnic->config.ed_tov;
996 iport->r_a_tov = fnic->config.ra_tov;
997 iport->link_supported_speeds = FNIC_PORTSPEED_10GBIT;
998 iport->wwpn = fnic->config.port_wwn;
999 iport->wwnn = fnic->config.node_wwn;
1000
1001 iport->max_payload_size = fnic->config.maxdatafieldsize;
1002
1003 if ((iport->max_payload_size < FNIC_MIN_DATA_FIELD_SIZE) ||
1004 (iport->max_payload_size > FNIC_FC_MAX_PAYLOAD_LEN) ||
1005 ((iport->max_payload_size % 4) != 0)) {
1006 iport->max_payload_size = FNIC_FC_MAX_PAYLOAD_LEN;
1007 }
1008
1009 iport->flags |= FNIC_FIRST_LINK_UP;
1010
1011 timer_setup(&(iport->fabric.retry_timer), fdls_fabric_timer_callback,
1012 0);
1013
1014 fnic->stats_reset_time = jiffies;
1015
1016 INIT_WORK(&fnic->link_work, fnic_handle_link);
1017 INIT_WORK(&fnic->frame_work, fnic_handle_frame);
1018 INIT_WORK(&fnic->tport_work, fnic_tport_event_handler);
1019 INIT_WORK(&fnic->flush_work, fnic_flush_tx);
1020
1021 INIT_LIST_HEAD(&fnic->frame_queue);
1022 INIT_LIST_HEAD(&fnic->tx_queue);
1023 INIT_LIST_HEAD(&fnic->tport_event_list);
1024
1025 INIT_DELAYED_WORK(&iport->oxid_pool.schedule_oxid_free_retry,
1026 fdls_schedule_oxid_free_retry_work);
1027
1028 /* Initialize the oxid reclaim list and work struct */
1029 INIT_LIST_HEAD(&iport->oxid_pool.oxid_reclaim_list);
1030 INIT_DELAYED_WORK(&iport->oxid_pool.oxid_reclaim_work, fdls_reclaim_oxid_handler);
1031
1032 /* Enable all queues */
1033 for (i = 0; i < fnic->raw_wq_count; i++)
1034 vnic_wq_enable(&fnic->wq[i]);
1035 for (i = 0; i < fnic->rq_count; i++) {
1036 if (!ioread32(&fnic->rq[i].ctrl->enable))
1037 vnic_rq_enable(&fnic->rq[i]);
1038 }
1039 for (i = 0; i < fnic->wq_copy_count; i++)
1040 vnic_wq_copy_enable(&fnic->hw_copy_wq[i]);
1041
1042 vnic_dev_enable(fnic->vdev);
1043
1044 err = fnic_request_intr(fnic);
1045 if (err) {
1046 dev_err(&fnic->pdev->dev, "Unable to request irq.\n");
1047 goto err_out_fnic_request_intr;
1048 }
1049
1050 fnic_notify_timer_start(fnic);
1051
1052 fnic_fdls_init(fnic, (fnic->config.flags & VFCF_FIP_CAPABLE));
1053
1054 err = fnic_scsi_drv_init(fnic);
1055 if (err)
1056 goto err_out_scsi_drv_init;
1057
1058 err = fnic_stats_debugfs_init(fnic);
1059 if (err) {
1060 dev_err(&fnic->pdev->dev, "Failed to initialize debugfs for stats\n");
1061 goto err_out_free_stats_debugfs;
1062 }
1063
1064 for (i = 0; i < fnic->intr_count; i++)
1065 vnic_intr_unmask(&fnic->intr[i]);
1066
1067 spin_lock_irqsave(&fnic_list_lock, flags);
1068 list_add_tail(&fnic->list, &fnic_list);
1069 spin_unlock_irqrestore(&fnic_list_lock, flags);
1070
1071 return 0;
1072
1073 err_out_free_stats_debugfs:
1074 fnic_stats_debugfs_remove(fnic);
1075 fnic_free_ioreq_tables_mq(fnic);
1076 scsi_remove_host(fnic->host);
1077 err_out_scsi_drv_init:
1078 fnic_free_intr(fnic);
1079 err_out_fnic_request_intr:
1080 err_out_alloc_rq_buf:
1081 for (i = 0; i < fnic->rq_count; i++) {
1082 if (ioread32(&fnic->rq[i].ctrl->enable))
1083 vnic_rq_disable(&fnic->rq[i]);
1084 vnic_rq_clean(&fnic->rq[i], fnic_free_rq_buf);
1085 }
1086 vnic_dev_notify_unset(fnic->vdev);
1087 err_out_fnic_notify_set:
1088 mempool_destroy(fnic->frame_elem_pool);
1089 err_out_fdls_frame_elem_pool:
1090 mempool_destroy(fnic->frame_pool);
1091 err_out_fdls_frame_pool:
1092 mempool_destroy(fnic->io_sgl_pool[FNIC_SGL_CACHE_MAX]);
1093 err_out_free_dflt_pool:
1094 mempool_destroy(fnic->io_sgl_pool[FNIC_SGL_CACHE_DFLT]);
1095 err_out_free_resources:
1096 fnic_free_vnic_resources(fnic);
1097 err_out_fnic_alloc_vnic_res:
1098 fnic_clear_intr_mode(fnic);
1099 err_out_fnic_set_intr_mode:
1100 scsi_host_put(fnic->host);
1101 err_out_fnic_role:
1102 err_out_scsi_host_alloc:
1103 err_out_fnic_get_config:
1104 err_out_dev_mac_addr:
1105 err_out_dev_init:
1106 vnic_dev_close(fnic->vdev);
1107 err_out_dev_open:
1108 err_out_dev_cmd_init:
1109 vnic_dev_unregister(fnic->vdev);
1110 err_out_dev_register:
1111 fnic_iounmap(fnic);
1112 err_out_fnic_map_bar:
1113 err_out_map_bar:
1114 err_out_set_dma_mask:
1115 pci_release_regions(pdev);
1116 err_out_pci_request_regions:
1117 pci_disable_device(pdev);
1118 err_out_pci_enable_device:
1119 ida_free(&fnic_ida, fnic->fnic_num);
1120 err_out_ida_alloc:
1121 kfree(fnic);
1122 err_out_fnic_alloc:
1123 return err;
1124 }
1125
fnic_remove(struct pci_dev * pdev)1126 static void fnic_remove(struct pci_dev *pdev)
1127 {
1128 struct fnic *fnic = pci_get_drvdata(pdev);
1129 unsigned long flags;
1130
1131 /*
1132 * Sometimes when probe() fails and do not exit with an error code,
1133 * remove() gets called with 'drvdata' not set. Avoid a crash by
1134 * adding a defensive check.
1135 */
1136 if (!fnic)
1137 return;
1138
1139 spin_lock_irqsave(&fnic->fnic_lock, flags);
1140 fnic->stop_rx_link_events = 1;
1141 spin_unlock_irqrestore(&fnic->fnic_lock, flags);
1142
1143 /*
1144 * Flush the fnic event queue. After this call, there should
1145 * be no event queued for this fnic device in the workqueue
1146 */
1147 flush_workqueue(fnic_event_queue);
1148
1149 fnic_scsi_unload(fnic);
1150
1151 if (vnic_dev_get_intr_mode(fnic->vdev) == VNIC_DEV_INTR_MODE_MSI)
1152 del_timer_sync(&fnic->notify_timer);
1153
1154 if (fnic->config.flags & VFCF_FIP_CAPABLE) {
1155 del_timer_sync(&fnic->retry_fip_timer);
1156 del_timer_sync(&fnic->fcs_ka_timer);
1157 del_timer_sync(&fnic->enode_ka_timer);
1158 del_timer_sync(&fnic->vn_ka_timer);
1159
1160 fnic_free_txq(&fnic->fip_frame_queue);
1161 fnic_fcoe_reset_vlans(fnic);
1162 }
1163
1164 if ((fnic_fdmi_support == 1) && (fnic->iport.fabric.fdmi_pending > 0))
1165 del_timer_sync(&fnic->iport.fabric.fdmi_timer);
1166
1167 fnic_stats_debugfs_remove(fnic);
1168
1169 /*
1170 * This stops the fnic device, masks all interrupts. Completed
1171 * CQ entries are drained. Posted WQ/RQ/Copy-WQ entries are
1172 * cleaned up
1173 */
1174 fnic_cleanup(fnic);
1175
1176 spin_lock_irqsave(&fnic_list_lock, flags);
1177 list_del(&fnic->list);
1178 spin_unlock_irqrestore(&fnic_list_lock, flags);
1179
1180 fnic_free_txq(&fnic->frame_queue);
1181 fnic_free_txq(&fnic->tx_queue);
1182
1183 vnic_dev_notify_unset(fnic->vdev);
1184 fnic_free_intr(fnic);
1185 fnic_free_vnic_resources(fnic);
1186 fnic_clear_intr_mode(fnic);
1187 vnic_dev_close(fnic->vdev);
1188 vnic_dev_unregister(fnic->vdev);
1189 fnic_iounmap(fnic);
1190 pci_release_regions(pdev);
1191 pci_disable_device(pdev);
1192 pci_set_drvdata(pdev, NULL);
1193 ida_free(&fnic_ida, fnic->fnic_num);
1194 fnic_scsi_unload_cleanup(fnic);
1195 scsi_host_put(fnic->host);
1196 kfree(fnic);
1197 }
1198
1199 static struct pci_driver fnic_driver = {
1200 .name = DRV_NAME,
1201 .id_table = fnic_id_table,
1202 .probe = fnic_probe,
1203 .remove = fnic_remove,
1204 };
1205
fnic_init_module(void)1206 static int __init fnic_init_module(void)
1207 {
1208 size_t len;
1209 int err = 0;
1210
1211 printk(KERN_INFO PFX "%s, ver %s\n", DRV_DESCRIPTION, DRV_VERSION);
1212
1213 /* Create debugfs entries for fnic */
1214 err = fnic_debugfs_init();
1215 if (err < 0) {
1216 printk(KERN_ERR PFX "Failed to create fnic directory "
1217 "for tracing and stats logging\n");
1218 fnic_debugfs_terminate();
1219 }
1220
1221 /* Allocate memory for trace buffer */
1222 err = fnic_trace_buf_init();
1223 if (err < 0) {
1224 printk(KERN_ERR PFX
1225 "Trace buffer initialization Failed. "
1226 "Fnic Tracing utility is disabled\n");
1227 fnic_trace_free();
1228 }
1229
1230 /* Allocate memory for fc trace buffer */
1231 err = fnic_fc_trace_init();
1232 if (err < 0) {
1233 printk(KERN_ERR PFX "FC trace buffer initialization Failed "
1234 "FC frame tracing utility is disabled\n");
1235 fnic_fc_trace_free();
1236 }
1237
1238 /* Create a cache for allocation of default size sgls */
1239 len = sizeof(struct fnic_dflt_sgl_list);
1240 fnic_sgl_cache[FNIC_SGL_CACHE_DFLT] = kmem_cache_create
1241 ("fnic_sgl_dflt", len + FNIC_SG_DESC_ALIGN, FNIC_SG_DESC_ALIGN,
1242 SLAB_HWCACHE_ALIGN,
1243 NULL);
1244 if (!fnic_sgl_cache[FNIC_SGL_CACHE_DFLT]) {
1245 printk(KERN_ERR PFX "failed to create fnic dflt sgl slab\n");
1246 err = -ENOMEM;
1247 goto err_create_fnic_sgl_slab_dflt;
1248 }
1249
1250 /* Create a cache for allocation of max size sgls*/
1251 len = sizeof(struct fnic_sgl_list);
1252 fnic_sgl_cache[FNIC_SGL_CACHE_MAX] = kmem_cache_create
1253 ("fnic_sgl_max", len + FNIC_SG_DESC_ALIGN, FNIC_SG_DESC_ALIGN,
1254 SLAB_HWCACHE_ALIGN,
1255 NULL);
1256 if (!fnic_sgl_cache[FNIC_SGL_CACHE_MAX]) {
1257 printk(KERN_ERR PFX "failed to create fnic max sgl slab\n");
1258 err = -ENOMEM;
1259 goto err_create_fnic_sgl_slab_max;
1260 }
1261
1262 /* Create a cache of io_req structs for use via mempool */
1263 fnic_io_req_cache = kmem_cache_create("fnic_io_req",
1264 sizeof(struct fnic_io_req),
1265 0, SLAB_HWCACHE_ALIGN, NULL);
1266 if (!fnic_io_req_cache) {
1267 printk(KERN_ERR PFX "failed to create fnic io_req slab\n");
1268 err = -ENOMEM;
1269 goto err_create_fnic_ioreq_slab;
1270 }
1271
1272 fdls_frame_cache = kmem_cache_create("fdls_frames",
1273 FNIC_FCOE_FRAME_MAXSZ,
1274 0, SLAB_HWCACHE_ALIGN, NULL);
1275 if (!fdls_frame_cache) {
1276 pr_err("fnic fdls frame cache create failed\n");
1277 err = -ENOMEM;
1278 goto err_create_fdls_frame_cache;
1279 }
1280
1281 fdls_frame_elem_cache = kmem_cache_create("fdls_frame_elem",
1282 sizeof(struct fnic_frame_list),
1283 0, SLAB_HWCACHE_ALIGN, NULL);
1284 if (!fdls_frame_elem_cache) {
1285 pr_err("fnic fdls frame elem cache create failed\n");
1286 err = -ENOMEM;
1287 goto err_create_fdls_frame_cache_elem;
1288 }
1289
1290 fnic_event_queue =
1291 alloc_ordered_workqueue("%s", WQ_MEM_RECLAIM, "fnic_event_wq");
1292 if (!fnic_event_queue) {
1293 printk(KERN_ERR PFX "fnic work queue create failed\n");
1294 err = -ENOMEM;
1295 goto err_create_fnic_workq;
1296 }
1297
1298 fnic_fip_queue =
1299 alloc_ordered_workqueue("%s", WQ_MEM_RECLAIM, "fnic_fip_q");
1300 if (!fnic_fip_queue) {
1301 printk(KERN_ERR PFX "fnic FIP work queue create failed\n");
1302 err = -ENOMEM;
1303 goto err_create_fip_workq;
1304 }
1305
1306 if (pc_rscn_handling_feature_flag == PC_RSCN_HANDLING_FEATURE_ON) {
1307 reset_fnic_work_queue =
1308 create_singlethread_workqueue("reset_fnic_work_queue");
1309 if (!reset_fnic_work_queue) {
1310 pr_err("reset fnic work queue create failed\n");
1311 err = -ENOMEM;
1312 goto err_create_reset_fnic_workq;
1313 }
1314 spin_lock_init(&reset_fnic_list_lock);
1315 INIT_LIST_HEAD(&reset_fnic_list);
1316 INIT_WORK(&reset_fnic_work, fnic_reset_work_handler);
1317 }
1318
1319 fnic_fc_transport = fc_attach_transport(&fnic_fc_functions);
1320 if (!fnic_fc_transport) {
1321 printk(KERN_ERR PFX "fc_attach_transport error\n");
1322 err = -ENOMEM;
1323 goto err_fc_transport;
1324 }
1325
1326 /* register the driver with PCI system */
1327 err = pci_register_driver(&fnic_driver);
1328 if (err < 0) {
1329 printk(KERN_ERR PFX "pci register error\n");
1330 goto err_pci_register;
1331 }
1332 return err;
1333
1334 err_pci_register:
1335 fc_release_transport(fnic_fc_transport);
1336 err_fc_transport:
1337 destroy_workqueue(fnic_fip_queue);
1338 err_create_fip_workq:
1339 if (pc_rscn_handling_feature_flag == PC_RSCN_HANDLING_FEATURE_ON)
1340 destroy_workqueue(reset_fnic_work_queue);
1341 err_create_reset_fnic_workq:
1342 destroy_workqueue(fnic_event_queue);
1343 err_create_fnic_workq:
1344 kmem_cache_destroy(fdls_frame_elem_cache);
1345 err_create_fdls_frame_cache_elem:
1346 kmem_cache_destroy(fdls_frame_cache);
1347 err_create_fdls_frame_cache:
1348 kmem_cache_destroy(fnic_io_req_cache);
1349 err_create_fnic_ioreq_slab:
1350 kmem_cache_destroy(fnic_sgl_cache[FNIC_SGL_CACHE_MAX]);
1351 err_create_fnic_sgl_slab_max:
1352 kmem_cache_destroy(fnic_sgl_cache[FNIC_SGL_CACHE_DFLT]);
1353 err_create_fnic_sgl_slab_dflt:
1354 fnic_trace_free();
1355 fnic_fc_trace_free();
1356 fnic_debugfs_terminate();
1357 return err;
1358 }
1359
fnic_cleanup_module(void)1360 static void __exit fnic_cleanup_module(void)
1361 {
1362 pci_unregister_driver(&fnic_driver);
1363 destroy_workqueue(fnic_event_queue);
1364
1365 if (pc_rscn_handling_feature_flag == PC_RSCN_HANDLING_FEATURE_ON)
1366 destroy_workqueue(reset_fnic_work_queue);
1367
1368 if (fnic_fip_queue) {
1369 flush_workqueue(fnic_fip_queue);
1370 destroy_workqueue(fnic_fip_queue);
1371 }
1372 kmem_cache_destroy(fnic_sgl_cache[FNIC_SGL_CACHE_MAX]);
1373 kmem_cache_destroy(fnic_sgl_cache[FNIC_SGL_CACHE_DFLT]);
1374 kmem_cache_destroy(fnic_io_req_cache);
1375 kmem_cache_destroy(fdls_frame_cache);
1376 fc_release_transport(fnic_fc_transport);
1377 fnic_trace_free();
1378 fnic_fc_trace_free();
1379 fnic_debugfs_terminate();
1380 ida_destroy(&fnic_ida);
1381 }
1382
1383 module_init(fnic_init_module);
1384 module_exit(fnic_cleanup_module);
1385