aboutsummaryrefslogtreecommitdiffstats
path: root/drivers/scsi/fnic/fnic_main.c
diff options
context:
space:
mode:
Diffstat (limited to 'drivers/scsi/fnic/fnic_main.c')
-rw-r--r--drivers/scsi/fnic/fnic_main.c942
1 files changed, 942 insertions, 0 deletions
diff --git a/drivers/scsi/fnic/fnic_main.c b/drivers/scsi/fnic/fnic_main.c
new file mode 100644
index 000000000000..32ef6b87d895
--- /dev/null
+++ b/drivers/scsi/fnic/fnic_main.c
@@ -0,0 +1,942 @@
1/*
2 * Copyright 2008 Cisco Systems, Inc. All rights reserved.
3 * Copyright 2007 Nuova Systems, Inc. All rights reserved.
4 *
5 * This program is free software; you may redistribute it and/or modify
6 * it under the terms of the GNU General Public License as published by
7 * the Free Software Foundation; version 2 of the License.
8 *
9 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
10 * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
11 * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
12 * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
13 * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
14 * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
15 * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
16 * SOFTWARE.
17 */
18#include <linux/module.h>
19#include <linux/mempool.h>
20#include <linux/string.h>
21#include <linux/errno.h>
22#include <linux/init.h>
23#include <linux/pci.h>
24#include <linux/skbuff.h>
25#include <linux/interrupt.h>
26#include <linux/spinlock.h>
27#include <linux/workqueue.h>
28#include <scsi/scsi_host.h>
29#include <scsi/scsi_transport.h>
30#include <scsi/scsi_transport_fc.h>
31#include <scsi/scsi_tcq.h>
32#include <scsi/libfc.h>
33#include <scsi/fc_frame.h>
34
35#include "vnic_dev.h"
36#include "vnic_intr.h"
37#include "vnic_stats.h"
38#include "fnic_io.h"
39#include "fnic.h"
40
41#define PCI_DEVICE_ID_CISCO_FNIC 0x0045
42
43/* Timer to poll notification area for events. Used for MSI interrupts */
44#define FNIC_NOTIFY_TIMER_PERIOD (2 * HZ)
45
46static struct kmem_cache *fnic_sgl_cache[FNIC_SGL_NUM_CACHES];
47static struct kmem_cache *fnic_io_req_cache;
48LIST_HEAD(fnic_list);
49DEFINE_SPINLOCK(fnic_list_lock);
50
51/* Supported devices by fnic module */
52static struct pci_device_id fnic_id_table[] = {
53 { PCI_DEVICE(PCI_VENDOR_ID_CISCO, PCI_DEVICE_ID_CISCO_FNIC) },
54 { 0, }
55};
56
57MODULE_DESCRIPTION(DRV_DESCRIPTION);
58MODULE_AUTHOR("Abhijeet Joglekar <abjoglek@cisco.com>, "
59 "Joseph R. Eykholt <jeykholt@cisco.com>");
60MODULE_LICENSE("GPL v2");
61MODULE_VERSION(DRV_VERSION);
62MODULE_DEVICE_TABLE(pci, fnic_id_table);
63
64unsigned int fnic_log_level;
65module_param(fnic_log_level, int, S_IRUGO|S_IWUSR);
66MODULE_PARM_DESC(fnic_log_level, "bit mask of fnic logging levels");
67
68
69static struct libfc_function_template fnic_transport_template = {
70 .frame_send = fnic_send,
71 .fcp_abort_io = fnic_empty_scsi_cleanup,
72 .fcp_cleanup = fnic_empty_scsi_cleanup,
73 .exch_mgr_reset = fnic_exch_mgr_reset
74};
75
76static int fnic_slave_alloc(struct scsi_device *sdev)
77{
78 struct fc_rport *rport = starget_to_rport(scsi_target(sdev));
79 struct fc_lport *lp = shost_priv(sdev->host);
80 struct fnic *fnic = lport_priv(lp);
81
82 sdev->tagged_supported = 1;
83
84 if (!rport || fc_remote_port_chkready(rport))
85 return -ENXIO;
86
87 scsi_activate_tcq(sdev, FNIC_DFLT_QUEUE_DEPTH);
88 rport->dev_loss_tmo = fnic->config.port_down_timeout / 1000;
89
90 return 0;
91}
92
93static struct scsi_host_template fnic_host_template = {
94 .module = THIS_MODULE,
95 .name = DRV_NAME,
96 .queuecommand = fnic_queuecommand,
97 .eh_abort_handler = fnic_abort_cmd,
98 .eh_device_reset_handler = fnic_device_reset,
99 .eh_host_reset_handler = fnic_host_reset,
100 .slave_alloc = fnic_slave_alloc,
101 .change_queue_depth = fc_change_queue_depth,
102 .change_queue_type = fc_change_queue_type,
103 .this_id = -1,
104 .cmd_per_lun = 3,
105 .can_queue = FNIC_MAX_IO_REQ,
106 .use_clustering = ENABLE_CLUSTERING,
107 .sg_tablesize = FNIC_MAX_SG_DESC_CNT,
108 .max_sectors = 0xffff,
109 .shost_attrs = fnic_attrs,
110};
111
112static void fnic_get_host_speed(struct Scsi_Host *shost);
113static struct scsi_transport_template *fnic_fc_transport;
114static struct fc_host_statistics *fnic_get_stats(struct Scsi_Host *);
115
116static struct fc_function_template fnic_fc_functions = {
117
118 .show_host_node_name = 1,
119 .show_host_port_name = 1,
120 .show_host_supported_classes = 1,
121 .show_host_supported_fc4s = 1,
122 .show_host_active_fc4s = 1,
123 .show_host_maxframe_size = 1,
124 .show_host_port_id = 1,
125 .show_host_supported_speeds = 1,
126 .get_host_speed = fnic_get_host_speed,
127 .show_host_speed = 1,
128 .show_host_port_type = 1,
129 .get_host_port_state = fc_get_host_port_state,
130 .show_host_port_state = 1,
131 .show_host_symbolic_name = 1,
132 .show_rport_maxframe_size = 1,
133 .show_rport_supported_classes = 1,
134 .show_host_fabric_name = 1,
135 .show_starget_node_name = 1,
136 .show_starget_port_name = 1,
137 .show_starget_port_id = 1,
138 .show_rport_dev_loss_tmo = 1,
139 .issue_fc_host_lip = fnic_reset,
140 .get_fc_host_stats = fnic_get_stats,
141 .dd_fcrport_size = sizeof(struct fc_rport_libfc_priv),
142 .terminate_rport_io = fnic_terminate_rport_io,
143};
144
145static void fnic_get_host_speed(struct Scsi_Host *shost)
146{
147 struct fc_lport *lp = shost_priv(shost);
148 struct fnic *fnic = lport_priv(lp);
149 u32 port_speed = vnic_dev_port_speed(fnic->vdev);
150
151 /* Add in other values as they get defined in fw */
152 switch (port_speed) {
153 case 10000:
154 fc_host_speed(shost) = FC_PORTSPEED_10GBIT;
155 break;
156 default:
157 fc_host_speed(shost) = FC_PORTSPEED_10GBIT;
158 break;
159 }
160}
161
162static struct fc_host_statistics *fnic_get_stats(struct Scsi_Host *host)
163{
164 int ret;
165 struct fc_lport *lp = shost_priv(host);
166 struct fnic *fnic = lport_priv(lp);
167 struct fc_host_statistics *stats = &lp->host_stats;
168 struct vnic_stats *vs;
169 unsigned long flags;
170
171 if (time_before(jiffies, fnic->stats_time + HZ / FNIC_STATS_RATE_LIMIT))
172 return stats;
173 fnic->stats_time = jiffies;
174
175 spin_lock_irqsave(&fnic->fnic_lock, flags);
176 ret = vnic_dev_stats_dump(fnic->vdev, &fnic->stats);
177 spin_unlock_irqrestore(&fnic->fnic_lock, flags);
178
179 if (ret) {
180 FNIC_MAIN_DBG(KERN_DEBUG, fnic->lport->host,
181 "fnic: Get vnic stats failed"
182 " 0x%x", ret);
183 return stats;
184 }
185 vs = fnic->stats;
186 stats->tx_frames = vs->tx.tx_unicast_frames_ok;
187 stats->tx_words = vs->tx.tx_unicast_bytes_ok / 4;
188 stats->rx_frames = vs->rx.rx_unicast_frames_ok;
189 stats->rx_words = vs->rx.rx_unicast_bytes_ok / 4;
190 stats->error_frames = vs->tx.tx_errors + vs->rx.rx_errors;
191 stats->dumped_frames = vs->tx.tx_drops + vs->rx.rx_drop;
192 stats->invalid_crc_count = vs->rx.rx_crc_errors;
193 stats->seconds_since_last_reset = (jiffies - lp->boot_time) / HZ;
194 stats->fcp_input_megabytes = div_u64(fnic->fcp_input_bytes, 1000000);
195 stats->fcp_output_megabytes = div_u64(fnic->fcp_output_bytes, 1000000);
196
197 return stats;
198}
199
200void fnic_log_q_error(struct fnic *fnic)
201{
202 unsigned int i;
203 u32 error_status;
204
205 for (i = 0; i < fnic->raw_wq_count; i++) {
206 error_status = ioread32(&fnic->wq[i].ctrl->error_status);
207 if (error_status)
208 shost_printk(KERN_ERR, fnic->lport->host,
209 "WQ[%d] error_status"
210 " %d\n", i, error_status);
211 }
212
213 for (i = 0; i < fnic->rq_count; i++) {
214 error_status = ioread32(&fnic->rq[i].ctrl->error_status);
215 if (error_status)
216 shost_printk(KERN_ERR, fnic->lport->host,
217 "RQ[%d] error_status"
218 " %d\n", i, error_status);
219 }
220
221 for (i = 0; i < fnic->wq_copy_count; i++) {
222 error_status = ioread32(&fnic->wq_copy[i].ctrl->error_status);
223 if (error_status)
224 shost_printk(KERN_ERR, fnic->lport->host,
225 "CWQ[%d] error_status"
226 " %d\n", i, error_status);
227 }
228}
229
230void fnic_handle_link_event(struct fnic *fnic)
231{
232 unsigned long flags;
233
234 spin_lock_irqsave(&fnic->fnic_lock, flags);
235 if (fnic->stop_rx_link_events) {
236 spin_unlock_irqrestore(&fnic->fnic_lock, flags);
237 return;
238 }
239 spin_unlock_irqrestore(&fnic->fnic_lock, flags);
240
241 queue_work(fnic_event_queue, &fnic->link_work);
242
243}
244
245static int fnic_notify_set(struct fnic *fnic)
246{
247 int err;
248
249 switch (vnic_dev_get_intr_mode(fnic->vdev)) {
250 case VNIC_DEV_INTR_MODE_INTX:
251 err = vnic_dev_notify_set(fnic->vdev, FNIC_INTX_NOTIFY);
252 break;
253 case VNIC_DEV_INTR_MODE_MSI:
254 err = vnic_dev_notify_set(fnic->vdev, -1);
255 break;
256 case VNIC_DEV_INTR_MODE_MSIX:
257 err = vnic_dev_notify_set(fnic->vdev, FNIC_MSIX_ERR_NOTIFY);
258 break;
259 default:
260 shost_printk(KERN_ERR, fnic->lport->host,
261 "Interrupt mode should be set up"
262 " before devcmd notify set %d\n",
263 vnic_dev_get_intr_mode(fnic->vdev));
264 err = -1;
265 break;
266 }
267
268 return err;
269}
270
271static void fnic_notify_timer(unsigned long data)
272{
273 struct fnic *fnic = (struct fnic *)data;
274
275 fnic_handle_link_event(fnic);
276 mod_timer(&fnic->notify_timer,
277 round_jiffies(jiffies + FNIC_NOTIFY_TIMER_PERIOD));
278}
279
280static void fnic_notify_timer_start(struct fnic *fnic)
281{
282 switch (vnic_dev_get_intr_mode(fnic->vdev)) {
283 case VNIC_DEV_INTR_MODE_MSI:
284 /*
285 * Schedule first timeout immediately. The driver is
286 * initiatialized and ready to look for link up notification
287 */
288 mod_timer(&fnic->notify_timer, jiffies);
289 break;
290 default:
291 /* Using intr for notification for INTx/MSI-X */
292 break;
293 };
294}
295
296static int fnic_dev_wait(struct vnic_dev *vdev,
297 int (*start)(struct vnic_dev *, int),
298 int (*finished)(struct vnic_dev *, int *),
299 int arg)
300{
301 unsigned long time;
302 int done;
303 int err;
304
305 err = start(vdev, arg);
306 if (err)
307 return err;
308
309 /* Wait for func to complete...2 seconds max */
310 time = jiffies + (HZ * 2);
311 do {
312 err = finished(vdev, &done);
313 if (err)
314 return err;
315 if (done)
316 return 0;
317 schedule_timeout_uninterruptible(HZ / 10);
318 } while (time_after(time, jiffies));
319
320 return -ETIMEDOUT;
321}
322
323static int fnic_cleanup(struct fnic *fnic)
324{
325 unsigned int i;
326 int err;
327 unsigned long flags;
328 struct fc_frame *flogi = NULL;
329 struct fc_frame *flogi_resp = NULL;
330
331 vnic_dev_disable(fnic->vdev);
332 for (i = 0; i < fnic->intr_count; i++)
333 vnic_intr_mask(&fnic->intr[i]);
334
335 for (i = 0; i < fnic->rq_count; i++) {
336 err = vnic_rq_disable(&fnic->rq[i]);
337 if (err)
338 return err;
339 }
340 for (i = 0; i < fnic->raw_wq_count; i++) {
341 err = vnic_wq_disable(&fnic->wq[i]);
342 if (err)
343 return err;
344 }
345 for (i = 0; i < fnic->wq_copy_count; i++) {
346 err = vnic_wq_copy_disable(&fnic->wq_copy[i]);
347 if (err)
348 return err;
349 }
350
351 /* Clean up completed IOs and FCS frames */
352 fnic_wq_copy_cmpl_handler(fnic, -1);
353 fnic_wq_cmpl_handler(fnic, -1);
354 fnic_rq_cmpl_handler(fnic, -1);
355
356 /* Clean up the IOs and FCS frames that have not completed */
357 for (i = 0; i < fnic->raw_wq_count; i++)
358 vnic_wq_clean(&fnic->wq[i], fnic_free_wq_buf);
359 for (i = 0; i < fnic->rq_count; i++)
360 vnic_rq_clean(&fnic->rq[i], fnic_free_rq_buf);
361 for (i = 0; i < fnic->wq_copy_count; i++)
362 vnic_wq_copy_clean(&fnic->wq_copy[i],
363 fnic_wq_copy_cleanup_handler);
364
365 for (i = 0; i < fnic->cq_count; i++)
366 vnic_cq_clean(&fnic->cq[i]);
367 for (i = 0; i < fnic->intr_count; i++)
368 vnic_intr_clean(&fnic->intr[i]);
369
370 /*
371 * Remove cached flogi and flogi resp frames if any
372 * These frames are not in any queue, and therefore queue
373 * cleanup does not clean them. So clean them explicitly
374 */
375 spin_lock_irqsave(&fnic->fnic_lock, flags);
376 flogi = fnic->flogi;
377 fnic->flogi = NULL;
378 flogi_resp = fnic->flogi_resp;
379 fnic->flogi_resp = NULL;
380 spin_unlock_irqrestore(&fnic->fnic_lock, flags);
381
382 if (flogi)
383 dev_kfree_skb(fp_skb(flogi));
384
385 if (flogi_resp)
386 dev_kfree_skb(fp_skb(flogi_resp));
387
388 mempool_destroy(fnic->io_req_pool);
389 for (i = 0; i < FNIC_SGL_NUM_CACHES; i++)
390 mempool_destroy(fnic->io_sgl_pool[i]);
391
392 return 0;
393}
394
395static void fnic_iounmap(struct fnic *fnic)
396{
397 if (fnic->bar0.vaddr)
398 iounmap(fnic->bar0.vaddr);
399}
400
401/*
402 * Allocate element for mempools requiring GFP_DMA flag.
403 * Otherwise, checks in kmem_flagcheck() hit BUG_ON().
404 */
405static void *fnic_alloc_slab_dma(gfp_t gfp_mask, void *pool_data)
406{
407 struct kmem_cache *mem = pool_data;
408
409 return kmem_cache_alloc(mem, gfp_mask | GFP_ATOMIC | GFP_DMA);
410}
411
412static int __devinit fnic_probe(struct pci_dev *pdev,
413 const struct pci_device_id *ent)
414{
415 struct Scsi_Host *host;
416 struct fc_lport *lp;
417 struct fnic *fnic;
418 mempool_t *pool;
419 int err;
420 int i;
421 unsigned long flags;
422
423 /*
424 * Allocate SCSI Host and set up association between host,
425 * local port, and fnic
426 */
427 host = scsi_host_alloc(&fnic_host_template,
428 sizeof(struct fc_lport) + sizeof(struct fnic));
429 if (!host) {
430 printk(KERN_ERR PFX "Unable to alloc SCSI host\n");
431 err = -ENOMEM;
432 goto err_out;
433 }
434 lp = shost_priv(host);
435 lp->host = host;
436 fnic = lport_priv(lp);
437 fnic->lport = lp;
438
439 snprintf(fnic->name, sizeof(fnic->name) - 1, "%s%d", DRV_NAME,
440 host->host_no);
441
442 host->transportt = fnic_fc_transport;
443
444 err = scsi_init_shared_tag_map(host, FNIC_MAX_IO_REQ);
445 if (err) {
446 shost_printk(KERN_ERR, fnic->lport->host,
447 "Unable to alloc shared tag map\n");
448 goto err_out_free_hba;
449 }
450
451 /* Setup PCI resources */
452 pci_set_drvdata(pdev, fnic);
453
454 fnic->pdev = pdev;
455
456 err = pci_enable_device(pdev);
457 if (err) {
458 shost_printk(KERN_ERR, fnic->lport->host,
459 "Cannot enable PCI device, aborting.\n");
460 goto err_out_free_hba;
461 }
462
463 err = pci_request_regions(pdev, DRV_NAME);
464 if (err) {
465 shost_printk(KERN_ERR, fnic->lport->host,
466 "Cannot enable PCI resources, aborting\n");
467 goto err_out_disable_device;
468 }
469
470 pci_set_master(pdev);
471
472 /* Query PCI controller on system for DMA addressing
473 * limitation for the device. Try 40-bit first, and
474 * fail to 32-bit.
475 */
476 err = pci_set_dma_mask(pdev, DMA_40BIT_MASK);
477 if (err) {
478 err = pci_set_dma_mask(pdev, DMA_32BIT_MASK);
479 if (err) {
480 shost_printk(KERN_ERR, fnic->lport->host,
481 "No usable DMA configuration "
482 "aborting\n");
483 goto err_out_release_regions;
484 }
485 err = pci_set_consistent_dma_mask(pdev, DMA_32BIT_MASK);
486 if (err) {
487 shost_printk(KERN_ERR, fnic->lport->host,
488 "Unable to obtain 32-bit DMA "
489 "for consistent allocations, aborting.\n");
490 goto err_out_release_regions;
491 }
492 } else {
493 err = pci_set_consistent_dma_mask(pdev, DMA_40BIT_MASK);
494 if (err) {
495 shost_printk(KERN_ERR, fnic->lport->host,
496 "Unable to obtain 40-bit DMA "
497 "for consistent allocations, aborting.\n");
498 goto err_out_release_regions;
499 }
500 }
501
502 /* Map vNIC resources from BAR0 */
503 if (!(pci_resource_flags(pdev, 0) & IORESOURCE_MEM)) {
504 shost_printk(KERN_ERR, fnic->lport->host,
505 "BAR0 not memory-map'able, aborting.\n");
506 err = -ENODEV;
507 goto err_out_release_regions;
508 }
509
510 fnic->bar0.vaddr = pci_iomap(pdev, 0, 0);
511 fnic->bar0.bus_addr = pci_resource_start(pdev, 0);
512 fnic->bar0.len = pci_resource_len(pdev, 0);
513
514 if (!fnic->bar0.vaddr) {
515 shost_printk(KERN_ERR, fnic->lport->host,
516 "Cannot memory-map BAR0 res hdr, "
517 "aborting.\n");
518 err = -ENODEV;
519 goto err_out_release_regions;
520 }
521
522 fnic->vdev = vnic_dev_register(NULL, fnic, pdev, &fnic->bar0);
523 if (!fnic->vdev) {
524 shost_printk(KERN_ERR, fnic->lport->host,
525 "vNIC registration failed, "
526 "aborting.\n");
527 err = -ENODEV;
528 goto err_out_iounmap;
529 }
530
531 err = fnic_dev_wait(fnic->vdev, vnic_dev_open,
532 vnic_dev_open_done, 0);
533 if (err) {
534 shost_printk(KERN_ERR, fnic->lport->host,
535 "vNIC dev open failed, aborting.\n");
536 goto err_out_vnic_unregister;
537 }
538
539 err = vnic_dev_init(fnic->vdev, 0);
540 if (err) {
541 shost_printk(KERN_ERR, fnic->lport->host,
542 "vNIC dev init failed, aborting.\n");
543 goto err_out_dev_close;
544 }
545
546 err = vnic_dev_mac_addr(fnic->vdev, fnic->mac_addr);
547 if (err) {
548 shost_printk(KERN_ERR, fnic->lport->host,
549 "vNIC get MAC addr failed \n");
550 goto err_out_dev_close;
551 }
552
553 /* Get vNIC configuration */
554 err = fnic_get_vnic_config(fnic);
555 if (err) {
556 shost_printk(KERN_ERR, fnic->lport->host,
557 "Get vNIC configuration failed, "
558 "aborting.\n");
559 goto err_out_dev_close;
560 }
561 host->max_lun = fnic->config.luns_per_tgt;
562 host->max_id = FNIC_MAX_FCP_TARGET;
563
564 fnic_get_res_counts(fnic);
565
566 err = fnic_set_intr_mode(fnic);
567 if (err) {
568 shost_printk(KERN_ERR, fnic->lport->host,
569 "Failed to set intr mode, "
570 "aborting.\n");
571 goto err_out_dev_close;
572 }
573
574 err = fnic_request_intr(fnic);
575 if (err) {
576 shost_printk(KERN_ERR, fnic->lport->host,
577 "Unable to request irq.\n");
578 goto err_out_clear_intr;
579 }
580
581 err = fnic_alloc_vnic_resources(fnic);
582 if (err) {
583 shost_printk(KERN_ERR, fnic->lport->host,
584 "Failed to alloc vNIC resources, "
585 "aborting.\n");
586 goto err_out_free_intr;
587 }
588
589
590 /* initialize all fnic locks */
591 spin_lock_init(&fnic->fnic_lock);
592
593 for (i = 0; i < FNIC_WQ_MAX; i++)
594 spin_lock_init(&fnic->wq_lock[i]);
595
596 for (i = 0; i < FNIC_WQ_COPY_MAX; i++) {
597 spin_lock_init(&fnic->wq_copy_lock[i]);
598 fnic->wq_copy_desc_low[i] = DESC_CLEAN_LOW_WATERMARK;
599 fnic->fw_ack_recd[i] = 0;
600 fnic->fw_ack_index[i] = -1;
601 }
602
603 for (i = 0; i < FNIC_IO_LOCKS; i++)
604 spin_lock_init(&fnic->io_req_lock[i]);
605
606 fnic->io_req_pool = mempool_create_slab_pool(2, fnic_io_req_cache);
607 if (!fnic->io_req_pool)
608 goto err_out_free_resources;
609
610 pool = mempool_create(2, fnic_alloc_slab_dma, mempool_free_slab,
611 fnic_sgl_cache[FNIC_SGL_CACHE_DFLT]);
612 if (!pool)
613 goto err_out_free_ioreq_pool;
614 fnic->io_sgl_pool[FNIC_SGL_CACHE_DFLT] = pool;
615
616 pool = mempool_create(2, fnic_alloc_slab_dma, mempool_free_slab,
617 fnic_sgl_cache[FNIC_SGL_CACHE_MAX]);
618 if (!pool)
619 goto err_out_free_dflt_pool;
620 fnic->io_sgl_pool[FNIC_SGL_CACHE_MAX] = pool;
621
622 /* setup vlan config, hw inserts vlan header */
623 fnic->vlan_hw_insert = 1;
624 fnic->vlan_id = 0;
625
626 fnic->flogi_oxid = FC_XID_UNKNOWN;
627 fnic->flogi = NULL;
628 fnic->flogi_resp = NULL;
629 fnic->state = FNIC_IN_FC_MODE;
630
631 /* Enable hardware stripping of vlan header on ingress */
632 fnic_set_nic_config(fnic, 0, 0, 0, 0, 0, 0, 1);
633
634 /* Setup notification buffer area */
635 err = fnic_notify_set(fnic);
636 if (err) {
637 shost_printk(KERN_ERR, fnic->lport->host,
638 "Failed to alloc notify buffer, aborting.\n");
639 goto err_out_free_max_pool;
640 }
641
642 /* Setup notify timer when using MSI interrupts */
643 if (vnic_dev_get_intr_mode(fnic->vdev) == VNIC_DEV_INTR_MODE_MSI)
644 setup_timer(&fnic->notify_timer,
645 fnic_notify_timer, (unsigned long)fnic);
646
647 /* allocate RQ buffers and post them to RQ*/
648 for (i = 0; i < fnic->rq_count; i++) {
649 err = vnic_rq_fill(&fnic->rq[i], fnic_alloc_rq_frame);
650 if (err) {
651 shost_printk(KERN_ERR, fnic->lport->host,
652 "fnic_alloc_rq_frame can't alloc "
653 "frame\n");
654 goto err_out_free_rq_buf;
655 }
656 }
657
658 /*
659 * Initialization done with PCI system, hardware, firmware.
660 * Add host to SCSI
661 */
662 err = scsi_add_host(lp->host, &pdev->dev);
663 if (err) {
664 shost_printk(KERN_ERR, fnic->lport->host,
665 "fnic: scsi_add_host failed...exiting\n");
666 goto err_out_free_rq_buf;
667 }
668
669 /* Start local port initiatialization */
670
671 lp->link_up = 0;
672 lp->tt = fnic_transport_template;
673
674 lp->emp = fc_exch_mgr_alloc(lp, FC_CLASS_3,
675 FCPIO_HOST_EXCH_RANGE_START,
676 FCPIO_HOST_EXCH_RANGE_END);
677 if (!lp->emp) {
678 err = -ENOMEM;
679 goto err_out_remove_scsi_host;
680 }
681
682 lp->max_retry_count = fnic->config.flogi_retries;
683 lp->service_params = (FCP_SPPF_INIT_FCN | FCP_SPPF_RD_XRDY_DIS |
684 FCP_SPPF_CONF_COMPL);
685 if (fnic->config.flags & VFCF_FCP_SEQ_LVL_ERR)
686 lp->service_params |= FCP_SPPF_RETRY;
687
688 lp->boot_time = jiffies;
689 lp->e_d_tov = fnic->config.ed_tov;
690 lp->r_a_tov = fnic->config.ra_tov;
691 lp->link_supported_speeds = FC_PORTSPEED_10GBIT;
692 fc_set_wwnn(lp, fnic->config.node_wwn);
693 fc_set_wwpn(lp, fnic->config.port_wwn);
694
695 fc_exch_init(lp);
696 fc_lport_init(lp);
697 fc_elsct_init(lp);
698 fc_rport_init(lp);
699 fc_disc_init(lp);
700
701 fc_lport_config(lp);
702
703 if (fc_set_mfs(lp, fnic->config.maxdatafieldsize +
704 sizeof(struct fc_frame_header))) {
705 err = -EINVAL;
706 goto err_out_free_exch_mgr;
707 }
708 fc_host_maxframe_size(lp->host) = lp->mfs;
709
710 sprintf(fc_host_symbolic_name(lp->host),
711 DRV_NAME " v" DRV_VERSION " over %s", fnic->name);
712
713 spin_lock_irqsave(&fnic_list_lock, flags);
714 list_add_tail(&fnic->list, &fnic_list);
715 spin_unlock_irqrestore(&fnic_list_lock, flags);
716
717 INIT_WORK(&fnic->link_work, fnic_handle_link);
718 INIT_WORK(&fnic->frame_work, fnic_handle_frame);
719 skb_queue_head_init(&fnic->frame_queue);
720
721 /* Enable all queues */
722 for (i = 0; i < fnic->raw_wq_count; i++)
723 vnic_wq_enable(&fnic->wq[i]);
724 for (i = 0; i < fnic->rq_count; i++)
725 vnic_rq_enable(&fnic->rq[i]);
726 for (i = 0; i < fnic->wq_copy_count; i++)
727 vnic_wq_copy_enable(&fnic->wq_copy[i]);
728
729 fc_fabric_login(lp);
730
731 vnic_dev_enable(fnic->vdev);
732 for (i = 0; i < fnic->intr_count; i++)
733 vnic_intr_unmask(&fnic->intr[i]);
734
735 fnic_notify_timer_start(fnic);
736
737 return 0;
738
739err_out_free_exch_mgr:
740 fc_exch_mgr_free(lp->emp);
741err_out_remove_scsi_host:
742 fc_remove_host(fnic->lport->host);
743 scsi_remove_host(fnic->lport->host);
744err_out_free_rq_buf:
745 for (i = 0; i < fnic->rq_count; i++)
746 vnic_rq_clean(&fnic->rq[i], fnic_free_rq_buf);
747 vnic_dev_notify_unset(fnic->vdev);
748err_out_free_max_pool:
749 mempool_destroy(fnic->io_sgl_pool[FNIC_SGL_CACHE_MAX]);
750err_out_free_dflt_pool:
751 mempool_destroy(fnic->io_sgl_pool[FNIC_SGL_CACHE_DFLT]);
752err_out_free_ioreq_pool:
753 mempool_destroy(fnic->io_req_pool);
754err_out_free_resources:
755 fnic_free_vnic_resources(fnic);
756err_out_free_intr:
757 fnic_free_intr(fnic);
758err_out_clear_intr:
759 fnic_clear_intr_mode(fnic);
760err_out_dev_close:
761 vnic_dev_close(fnic->vdev);
762err_out_vnic_unregister:
763 vnic_dev_unregister(fnic->vdev);
764err_out_iounmap:
765 fnic_iounmap(fnic);
766err_out_release_regions:
767 pci_release_regions(pdev);
768err_out_disable_device:
769 pci_disable_device(pdev);
770err_out_free_hba:
771 scsi_host_put(lp->host);
772err_out:
773 return err;
774}
775
776static void __devexit fnic_remove(struct pci_dev *pdev)
777{
778 struct fnic *fnic = pci_get_drvdata(pdev);
779 unsigned long flags;
780
781 /*
782 * Mark state so that the workqueue thread stops forwarding
783 * received frames and link events to the local port. ISR and
784 * other threads that can queue work items will also stop
785 * creating work items on the fnic workqueue
786 */
787 spin_lock_irqsave(&fnic->fnic_lock, flags);
788 fnic->stop_rx_link_events = 1;
789 spin_unlock_irqrestore(&fnic->fnic_lock, flags);
790
791 if (vnic_dev_get_intr_mode(fnic->vdev) == VNIC_DEV_INTR_MODE_MSI)
792 del_timer_sync(&fnic->notify_timer);
793
794 /*
795 * Flush the fnic event queue. After this call, there should
796 * be no event queued for this fnic device in the workqueue
797 */
798 flush_workqueue(fnic_event_queue);
799 skb_queue_purge(&fnic->frame_queue);
800
801 /*
802 * Log off the fabric. This stops all remote ports, dns port,
803 * logs off the fabric. This flushes all rport, disc, lport work
804 * before returning
805 */
806 fc_fabric_logoff(fnic->lport);
807
808 spin_lock_irqsave(&fnic->fnic_lock, flags);
809 fnic->in_remove = 1;
810 spin_unlock_irqrestore(&fnic->fnic_lock, flags);
811
812 fc_lport_destroy(fnic->lport);
813
814 /*
815 * This stops the fnic device, masks all interrupts. Completed
816 * CQ entries are drained. Posted WQ/RQ/Copy-WQ entries are
817 * cleaned up
818 */
819 fnic_cleanup(fnic);
820
821 BUG_ON(!skb_queue_empty(&fnic->frame_queue));
822
823 spin_lock_irqsave(&fnic_list_lock, flags);
824 list_del(&fnic->list);
825 spin_unlock_irqrestore(&fnic_list_lock, flags);
826
827 fc_remove_host(fnic->lport->host);
828 scsi_remove_host(fnic->lport->host);
829 fc_exch_mgr_free(fnic->lport->emp);
830 vnic_dev_notify_unset(fnic->vdev);
831 fnic_free_vnic_resources(fnic);
832 fnic_free_intr(fnic);
833 fnic_clear_intr_mode(fnic);
834 vnic_dev_close(fnic->vdev);
835 vnic_dev_unregister(fnic->vdev);
836 fnic_iounmap(fnic);
837 pci_release_regions(pdev);
838 pci_disable_device(pdev);
839 pci_set_drvdata(pdev, NULL);
840 scsi_host_put(fnic->lport->host);
841}
842
843static struct pci_driver fnic_driver = {
844 .name = DRV_NAME,
845 .id_table = fnic_id_table,
846 .probe = fnic_probe,
847 .remove = __devexit_p(fnic_remove),
848};
849
850static int __init fnic_init_module(void)
851{
852 size_t len;
853 int err = 0;
854
855 printk(KERN_INFO PFX "%s, ver %s\n", DRV_DESCRIPTION, DRV_VERSION);
856
857 /* Create a cache for allocation of default size sgls */
858 len = sizeof(struct fnic_dflt_sgl_list);
859 fnic_sgl_cache[FNIC_SGL_CACHE_DFLT] = kmem_cache_create
860 ("fnic_sgl_dflt", len + FNIC_SG_DESC_ALIGN, FNIC_SG_DESC_ALIGN,
861 SLAB_HWCACHE_ALIGN | SLAB_CACHE_DMA,
862 NULL);
863 if (!fnic_sgl_cache[FNIC_SGL_CACHE_DFLT]) {
864 printk(KERN_ERR PFX "failed to create fnic dflt sgl slab\n");
865 err = -ENOMEM;
866 goto err_create_fnic_sgl_slab_dflt;
867 }
868
869 /* Create a cache for allocation of max size sgls*/
870 len = sizeof(struct fnic_sgl_list);
871 fnic_sgl_cache[FNIC_SGL_CACHE_MAX] = kmem_cache_create
872 ("fnic_sgl_max", len + FNIC_SG_DESC_ALIGN, FNIC_SG_DESC_ALIGN,
873 SLAB_HWCACHE_ALIGN | SLAB_CACHE_DMA,
874 NULL);
875 if (!fnic_sgl_cache[FNIC_SGL_CACHE_MAX]) {
876 printk(KERN_ERR PFX "failed to create fnic max sgl slab\n");
877 err = -ENOMEM;
878 goto err_create_fnic_sgl_slab_max;
879 }
880
881 /* Create a cache of io_req structs for use via mempool */
882 fnic_io_req_cache = kmem_cache_create("fnic_io_req",
883 sizeof(struct fnic_io_req),
884 0, SLAB_HWCACHE_ALIGN, NULL);
885 if (!fnic_io_req_cache) {
886 printk(KERN_ERR PFX "failed to create fnic io_req slab\n");
887 err = -ENOMEM;
888 goto err_create_fnic_ioreq_slab;
889 }
890
891 fnic_event_queue = create_singlethread_workqueue("fnic_event_wq");
892 if (!fnic_event_queue) {
893 printk(KERN_ERR PFX "fnic work queue create failed\n");
894 err = -ENOMEM;
895 goto err_create_fnic_workq;
896 }
897
898 spin_lock_init(&fnic_list_lock);
899 INIT_LIST_HEAD(&fnic_list);
900
901 fnic_fc_transport = fc_attach_transport(&fnic_fc_functions);
902 if (!fnic_fc_transport) {
903 printk(KERN_ERR PFX "fc_attach_transport error\n");
904 err = -ENOMEM;
905 goto err_fc_transport;
906 }
907
908 /* register the driver with PCI system */
909 err = pci_register_driver(&fnic_driver);
910 if (err < 0) {
911 printk(KERN_ERR PFX "pci register error\n");
912 goto err_pci_register;
913 }
914 return err;
915
916err_pci_register:
917 fc_release_transport(fnic_fc_transport);
918err_fc_transport:
919 destroy_workqueue(fnic_event_queue);
920err_create_fnic_workq:
921 kmem_cache_destroy(fnic_io_req_cache);
922err_create_fnic_ioreq_slab:
923 kmem_cache_destroy(fnic_sgl_cache[FNIC_SGL_CACHE_MAX]);
924err_create_fnic_sgl_slab_max:
925 kmem_cache_destroy(fnic_sgl_cache[FNIC_SGL_CACHE_DFLT]);
926err_create_fnic_sgl_slab_dflt:
927 return err;
928}
929
930static void __exit fnic_cleanup_module(void)
931{
932 pci_unregister_driver(&fnic_driver);
933 destroy_workqueue(fnic_event_queue);
934 kmem_cache_destroy(fnic_sgl_cache[FNIC_SGL_CACHE_MAX]);
935 kmem_cache_destroy(fnic_sgl_cache[FNIC_SGL_CACHE_DFLT]);
936 kmem_cache_destroy(fnic_io_req_cache);
937 fc_release_transport(fnic_fc_transport);
938}
939
940module_init(fnic_init_module);
941module_exit(fnic_cleanup_module);
942
generated by cgit v1.2.2 (git 2.25.0) at 2024-11-05 11:32:31 -0500