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/slab.h>
22 #include <linux/errno.h>
23 #include <linux/init.h>
24 #include <linux/pci.h>
25 #include <linux/skbuff.h>
26 #include <linux/interrupt.h>
27 #include <linux/spinlock.h>
28 #include <linux/workqueue.h>
29 #include <linux/if_ether.h>
30 #include <scsi/fc/fc_fip.h>
31 #include <scsi/scsi_host.h>
32 #include <scsi/scsi_transport.h>
33 #include <scsi/scsi_transport_fc.h>
34 #include <scsi/scsi_tcq.h>
35 #include <scsi/libfc.h>
36 #include <scsi/fc_frame.h>
37
38 #include "vnic_dev.h"
39 #include "vnic_intr.h"
40 #include "vnic_stats.h"
41 #include "fnic_io.h"
42 #include "fnic.h"
43
44 #define PCI_DEVICE_ID_CISCO_FNIC 0x0045
45
46 /* Timer to poll notification area for events. Used for MSI interrupts */
47 #define FNIC_NOTIFY_TIMER_PERIOD (2 * HZ)
48
49 static struct kmem_cache *fnic_sgl_cache[FNIC_SGL_NUM_CACHES];
50 static struct kmem_cache *fnic_io_req_cache;
51 LIST_HEAD(fnic_list);
52 DEFINE_SPINLOCK(fnic_list_lock);
53
54 /* Supported devices by fnic module */
55 static struct pci_device_id fnic_id_table[] = {
56 { PCI_DEVICE(PCI_VENDOR_ID_CISCO, PCI_DEVICE_ID_CISCO_FNIC) },
57 { 0, }
58 };
59
60 MODULE_DESCRIPTION(DRV_DESCRIPTION);
61 MODULE_AUTHOR("Abhijeet Joglekar <abjoglek@cisco.com>, "
62 "Joseph R. Eykholt <jeykholt@cisco.com>");
63 MODULE_LICENSE("GPL v2");
64 MODULE_VERSION(DRV_VERSION);
65 MODULE_DEVICE_TABLE(pci, fnic_id_table);
66
67 unsigned int fnic_log_level;
68 module_param(fnic_log_level, int, S_IRUGO|S_IWUSR);
69 MODULE_PARM_DESC(fnic_log_level, "bit mask of fnic logging levels");
70
71
72 static struct libfc_function_template fnic_transport_template = {
73 .frame_send = fnic_send,
74 .lport_set_port_id = fnic_set_port_id,
75 .fcp_abort_io = fnic_empty_scsi_cleanup,
76 .fcp_cleanup = fnic_empty_scsi_cleanup,
77 .exch_mgr_reset = fnic_exch_mgr_reset
78 };
79
fnic_slave_alloc(struct scsi_device * sdev)80 static int fnic_slave_alloc(struct scsi_device *sdev)
81 {
82 struct fc_rport *rport = starget_to_rport(scsi_target(sdev));
83
84 sdev->tagged_supported = 1;
85
86 if (!rport || fc_remote_port_chkready(rport))
87 return -ENXIO;
88
89 scsi_activate_tcq(sdev, FNIC_DFLT_QUEUE_DEPTH);
90 return 0;
91 }
92
93 static 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
112 static void
fnic_set_rport_dev_loss_tmo(struct fc_rport * rport,u32 timeout)113 fnic_set_rport_dev_loss_tmo(struct fc_rport *rport, u32 timeout)
114 {
115 if (timeout)
116 rport->dev_loss_tmo = timeout;
117 else
118 rport->dev_loss_tmo = 1;
119 }
120
121 static void fnic_get_host_speed(struct Scsi_Host *shost);
122 static struct scsi_transport_template *fnic_fc_transport;
123 static struct fc_host_statistics *fnic_get_stats(struct Scsi_Host *);
124
125 static struct fc_function_template fnic_fc_functions = {
126
127 .show_host_node_name = 1,
128 .show_host_port_name = 1,
129 .show_host_supported_classes = 1,
130 .show_host_supported_fc4s = 1,
131 .show_host_active_fc4s = 1,
132 .show_host_maxframe_size = 1,
133 .show_host_port_id = 1,
134 .show_host_supported_speeds = 1,
135 .get_host_speed = fnic_get_host_speed,
136 .show_host_speed = 1,
137 .show_host_port_type = 1,
138 .get_host_port_state = fc_get_host_port_state,
139 .show_host_port_state = 1,
140 .show_host_symbolic_name = 1,
141 .show_rport_maxframe_size = 1,
142 .show_rport_supported_classes = 1,
143 .show_host_fabric_name = 1,
144 .show_starget_node_name = 1,
145 .show_starget_port_name = 1,
146 .show_starget_port_id = 1,
147 .show_rport_dev_loss_tmo = 1,
148 .set_rport_dev_loss_tmo = fnic_set_rport_dev_loss_tmo,
149 .issue_fc_host_lip = fnic_reset,
150 .get_fc_host_stats = fnic_get_stats,
151 .dd_fcrport_size = sizeof(struct fc_rport_libfc_priv),
152 .terminate_rport_io = fnic_terminate_rport_io,
153 .bsg_request = fc_lport_bsg_request,
154 };
155
fnic_get_host_speed(struct Scsi_Host * shost)156 static void fnic_get_host_speed(struct Scsi_Host *shost)
157 {
158 struct fc_lport *lp = shost_priv(shost);
159 struct fnic *fnic = lport_priv(lp);
160 u32 port_speed = vnic_dev_port_speed(fnic->vdev);
161
162 /* Add in other values as they get defined in fw */
163 switch (port_speed) {
164 case 10000:
165 fc_host_speed(shost) = FC_PORTSPEED_10GBIT;
166 break;
167 default:
168 fc_host_speed(shost) = FC_PORTSPEED_10GBIT;
169 break;
170 }
171 }
172
fnic_get_stats(struct Scsi_Host * host)173 static struct fc_host_statistics *fnic_get_stats(struct Scsi_Host *host)
174 {
175 int ret;
176 struct fc_lport *lp = shost_priv(host);
177 struct fnic *fnic = lport_priv(lp);
178 struct fc_host_statistics *stats = &lp->host_stats;
179 struct vnic_stats *vs;
180 unsigned long flags;
181
182 if (time_before(jiffies, fnic->stats_time + HZ / FNIC_STATS_RATE_LIMIT))
183 return stats;
184 fnic->stats_time = jiffies;
185
186 spin_lock_irqsave(&fnic->fnic_lock, flags);
187 ret = vnic_dev_stats_dump(fnic->vdev, &fnic->stats);
188 spin_unlock_irqrestore(&fnic->fnic_lock, flags);
189
190 if (ret) {
191 FNIC_MAIN_DBG(KERN_DEBUG, fnic->lport->host,
192 "fnic: Get vnic stats failed"
193 " 0x%x", ret);
194 return stats;
195 }
196 vs = fnic->stats;
197 stats->tx_frames = vs->tx.tx_unicast_frames_ok;
198 stats->tx_words = vs->tx.tx_unicast_bytes_ok / 4;
199 stats->rx_frames = vs->rx.rx_unicast_frames_ok;
200 stats->rx_words = vs->rx.rx_unicast_bytes_ok / 4;
201 stats->error_frames = vs->tx.tx_errors + vs->rx.rx_errors;
202 stats->dumped_frames = vs->tx.tx_drops + vs->rx.rx_drop;
203 stats->invalid_crc_count = vs->rx.rx_crc_errors;
204 stats->seconds_since_last_reset = (jiffies - lp->boot_time) / HZ;
205 stats->fcp_input_megabytes = div_u64(fnic->fcp_input_bytes, 1000000);
206 stats->fcp_output_megabytes = div_u64(fnic->fcp_output_bytes, 1000000);
207
208 return stats;
209 }
210
fnic_log_q_error(struct fnic * fnic)211 void fnic_log_q_error(struct fnic *fnic)
212 {
213 unsigned int i;
214 u32 error_status;
215
216 for (i = 0; i < fnic->raw_wq_count; i++) {
217 error_status = ioread32(&fnic->wq[i].ctrl->error_status);
218 if (error_status)
219 shost_printk(KERN_ERR, fnic->lport->host,
220 "WQ[%d] error_status"
221 " %d\n", i, error_status);
222 }
223
224 for (i = 0; i < fnic->rq_count; i++) {
225 error_status = ioread32(&fnic->rq[i].ctrl->error_status);
226 if (error_status)
227 shost_printk(KERN_ERR, fnic->lport->host,
228 "RQ[%d] error_status"
229 " %d\n", i, error_status);
230 }
231
232 for (i = 0; i < fnic->wq_copy_count; i++) {
233 error_status = ioread32(&fnic->wq_copy[i].ctrl->error_status);
234 if (error_status)
235 shost_printk(KERN_ERR, fnic->lport->host,
236 "CWQ[%d] error_status"
237 " %d\n", i, error_status);
238 }
239 }
240
fnic_handle_link_event(struct fnic * fnic)241 void fnic_handle_link_event(struct fnic *fnic)
242 {
243 unsigned long flags;
244
245 spin_lock_irqsave(&fnic->fnic_lock, flags);
246 if (fnic->stop_rx_link_events) {
247 spin_unlock_irqrestore(&fnic->fnic_lock, flags);
248 return;
249 }
250 spin_unlock_irqrestore(&fnic->fnic_lock, flags);
251
252 queue_work(fnic_event_queue, &fnic->link_work);
253
254 }
255
fnic_notify_set(struct fnic * fnic)256 static int fnic_notify_set(struct fnic *fnic)
257 {
258 int err;
259
260 switch (vnic_dev_get_intr_mode(fnic->vdev)) {
261 case VNIC_DEV_INTR_MODE_INTX:
262 err = vnic_dev_notify_set(fnic->vdev, FNIC_INTX_NOTIFY);
263 break;
264 case VNIC_DEV_INTR_MODE_MSI:
265 err = vnic_dev_notify_set(fnic->vdev, -1);
266 break;
267 case VNIC_DEV_INTR_MODE_MSIX:
268 err = vnic_dev_notify_set(fnic->vdev, FNIC_MSIX_ERR_NOTIFY);
269 break;
270 default:
271 shost_printk(KERN_ERR, fnic->lport->host,
272 "Interrupt mode should be set up"
273 " before devcmd notify set %d\n",
274 vnic_dev_get_intr_mode(fnic->vdev));
275 err = -1;
276 break;
277 }
278
279 return err;
280 }
281
fnic_notify_timer(unsigned long data)282 static void fnic_notify_timer(unsigned long data)
283 {
284 struct fnic *fnic = (struct fnic *)data;
285
286 fnic_handle_link_event(fnic);
287 mod_timer(&fnic->notify_timer,
288 round_jiffies(jiffies + FNIC_NOTIFY_TIMER_PERIOD));
289 }
290
fnic_notify_timer_start(struct fnic * fnic)291 static void fnic_notify_timer_start(struct fnic *fnic)
292 {
293 switch (vnic_dev_get_intr_mode(fnic->vdev)) {
294 case VNIC_DEV_INTR_MODE_MSI:
295 /*
296 * Schedule first timeout immediately. The driver is
297 * initiatialized and ready to look for link up notification
298 */
299 mod_timer(&fnic->notify_timer, jiffies);
300 break;
301 default:
302 /* Using intr for notification for INTx/MSI-X */
303 break;
304 };
305 }
306
fnic_dev_wait(struct vnic_dev * vdev,int (* start)(struct vnic_dev *,int),int (* finished)(struct vnic_dev *,int *),int arg)307 static int fnic_dev_wait(struct vnic_dev *vdev,
308 int (*start)(struct vnic_dev *, int),
309 int (*finished)(struct vnic_dev *, int *),
310 int arg)
311 {
312 unsigned long time;
313 int done;
314 int err;
315
316 err = start(vdev, arg);
317 if (err)
318 return err;
319
320 /* Wait for func to complete...2 seconds max */
321 time = jiffies + (HZ * 2);
322 do {
323 err = finished(vdev, &done);
324 if (err)
325 return err;
326 if (done)
327 return 0;
328 schedule_timeout_uninterruptible(HZ / 10);
329 } while (time_after(time, jiffies));
330
331 return -ETIMEDOUT;
332 }
333
fnic_cleanup(struct fnic * fnic)334 static int fnic_cleanup(struct fnic *fnic)
335 {
336 unsigned int i;
337 int err;
338
339 vnic_dev_disable(fnic->vdev);
340 for (i = 0; i < fnic->intr_count; i++)
341 vnic_intr_mask(&fnic->intr[i]);
342
343 for (i = 0; i < fnic->rq_count; i++) {
344 err = vnic_rq_disable(&fnic->rq[i]);
345 if (err)
346 return err;
347 }
348 for (i = 0; i < fnic->raw_wq_count; i++) {
349 err = vnic_wq_disable(&fnic->wq[i]);
350 if (err)
351 return err;
352 }
353 for (i = 0; i < fnic->wq_copy_count; i++) {
354 err = vnic_wq_copy_disable(&fnic->wq_copy[i]);
355 if (err)
356 return err;
357 }
358
359 /* Clean up completed IOs and FCS frames */
360 fnic_wq_copy_cmpl_handler(fnic, -1);
361 fnic_wq_cmpl_handler(fnic, -1);
362 fnic_rq_cmpl_handler(fnic, -1);
363
364 /* Clean up the IOs and FCS frames that have not completed */
365 for (i = 0; i < fnic->raw_wq_count; i++)
366 vnic_wq_clean(&fnic->wq[i], fnic_free_wq_buf);
367 for (i = 0; i < fnic->rq_count; i++)
368 vnic_rq_clean(&fnic->rq[i], fnic_free_rq_buf);
369 for (i = 0; i < fnic->wq_copy_count; i++)
370 vnic_wq_copy_clean(&fnic->wq_copy[i],
371 fnic_wq_copy_cleanup_handler);
372
373 for (i = 0; i < fnic->cq_count; i++)
374 vnic_cq_clean(&fnic->cq[i]);
375 for (i = 0; i < fnic->intr_count; i++)
376 vnic_intr_clean(&fnic->intr[i]);
377
378 mempool_destroy(fnic->io_req_pool);
379 for (i = 0; i < FNIC_SGL_NUM_CACHES; i++)
380 mempool_destroy(fnic->io_sgl_pool[i]);
381
382 return 0;
383 }
384
fnic_iounmap(struct fnic * fnic)385 static void fnic_iounmap(struct fnic *fnic)
386 {
387 if (fnic->bar0.vaddr)
388 iounmap(fnic->bar0.vaddr);
389 }
390
391 /**
392 * fnic_get_mac() - get assigned data MAC address for FIP code.
393 * @lport: local port.
394 */
fnic_get_mac(struct fc_lport * lport)395 static u8 *fnic_get_mac(struct fc_lport *lport)
396 {
397 struct fnic *fnic = lport_priv(lport);
398
399 return fnic->data_src_addr;
400 }
401
fnic_probe(struct pci_dev * pdev,const struct pci_device_id * ent)402 static int __devinit fnic_probe(struct pci_dev *pdev,
403 const struct pci_device_id *ent)
404 {
405 struct Scsi_Host *host;
406 struct fc_lport *lp;
407 struct fnic *fnic;
408 mempool_t *pool;
409 int err;
410 int i;
411 unsigned long flags;
412
413 /*
414 * Allocate SCSI Host and set up association between host,
415 * local port, and fnic
416 */
417 lp = libfc_host_alloc(&fnic_host_template, sizeof(struct fnic));
418 if (!lp) {
419 printk(KERN_ERR PFX "Unable to alloc libfc local port\n");
420 err = -ENOMEM;
421 goto err_out;
422 }
423 host = lp->host;
424 fnic = lport_priv(lp);
425 fnic->lport = lp;
426 fnic->ctlr.lp = lp;
427
428 snprintf(fnic->name, sizeof(fnic->name) - 1, "%s%d", DRV_NAME,
429 host->host_no);
430
431 host->transportt = fnic_fc_transport;
432
433 err = scsi_init_shared_tag_map(host, FNIC_MAX_IO_REQ);
434 if (err) {
435 shost_printk(KERN_ERR, fnic->lport->host,
436 "Unable to alloc shared tag map\n");
437 goto err_out_free_hba;
438 }
439
440 /* Setup PCI resources */
441 pci_set_drvdata(pdev, fnic);
442
443 fnic->pdev = pdev;
444
445 err = pci_enable_device(pdev);
446 if (err) {
447 shost_printk(KERN_ERR, fnic->lport->host,
448 "Cannot enable PCI device, aborting.\n");
449 goto err_out_free_hba;
450 }
451
452 err = pci_request_regions(pdev, DRV_NAME);
453 if (err) {
454 shost_printk(KERN_ERR, fnic->lport->host,
455 "Cannot enable PCI resources, aborting\n");
456 goto err_out_disable_device;
457 }
458
459 pci_set_master(pdev);
460
461 /* Query PCI controller on system for DMA addressing
462 * limitation for the device. Try 40-bit first, and
463 * fail to 32-bit.
464 */
465 err = pci_set_dma_mask(pdev, DMA_BIT_MASK(40));
466 if (err) {
467 err = pci_set_dma_mask(pdev, DMA_BIT_MASK(32));
468 if (err) {
469 shost_printk(KERN_ERR, fnic->lport->host,
470 "No usable DMA configuration "
471 "aborting\n");
472 goto err_out_release_regions;
473 }
474 err = pci_set_consistent_dma_mask(pdev, DMA_BIT_MASK(32));
475 if (err) {
476 shost_printk(KERN_ERR, fnic->lport->host,
477 "Unable to obtain 32-bit DMA "
478 "for consistent allocations, aborting.\n");
479 goto err_out_release_regions;
480 }
481 } else {
482 err = pci_set_consistent_dma_mask(pdev, DMA_BIT_MASK(40));
483 if (err) {
484 shost_printk(KERN_ERR, fnic->lport->host,
485 "Unable to obtain 40-bit DMA "
486 "for consistent allocations, aborting.\n");
487 goto err_out_release_regions;
488 }
489 }
490
491 /* Map vNIC resources from BAR0 */
492 if (!(pci_resource_flags(pdev, 0) & IORESOURCE_MEM)) {
493 shost_printk(KERN_ERR, fnic->lport->host,
494 "BAR0 not memory-map'able, aborting.\n");
495 err = -ENODEV;
496 goto err_out_release_regions;
497 }
498
499 fnic->bar0.vaddr = pci_iomap(pdev, 0, 0);
500 fnic->bar0.bus_addr = pci_resource_start(pdev, 0);
501 fnic->bar0.len = pci_resource_len(pdev, 0);
502
503 if (!fnic->bar0.vaddr) {
504 shost_printk(KERN_ERR, fnic->lport->host,
505 "Cannot memory-map BAR0 res hdr, "
506 "aborting.\n");
507 err = -ENODEV;
508 goto err_out_release_regions;
509 }
510
511 fnic->vdev = vnic_dev_register(NULL, fnic, pdev, &fnic->bar0);
512 if (!fnic->vdev) {
513 shost_printk(KERN_ERR, fnic->lport->host,
514 "vNIC registration failed, "
515 "aborting.\n");
516 err = -ENODEV;
517 goto err_out_iounmap;
518 }
519
520 err = fnic_dev_wait(fnic->vdev, vnic_dev_open,
521 vnic_dev_open_done, 0);
522 if (err) {
523 shost_printk(KERN_ERR, fnic->lport->host,
524 "vNIC dev open failed, aborting.\n");
525 goto err_out_vnic_unregister;
526 }
527
528 err = vnic_dev_init(fnic->vdev, 0);
529 if (err) {
530 shost_printk(KERN_ERR, fnic->lport->host,
531 "vNIC dev init failed, aborting.\n");
532 goto err_out_dev_close;
533 }
534
535 err = vnic_dev_mac_addr(fnic->vdev, fnic->ctlr.ctl_src_addr);
536 if (err) {
537 shost_printk(KERN_ERR, fnic->lport->host,
538 "vNIC get MAC addr failed \n");
539 goto err_out_dev_close;
540 }
541 /* set data_src for point-to-point mode and to keep it non-zero */
542 memcpy(fnic->data_src_addr, fnic->ctlr.ctl_src_addr, ETH_ALEN);
543
544 /* Get vNIC configuration */
545 err = fnic_get_vnic_config(fnic);
546 if (err) {
547 shost_printk(KERN_ERR, fnic->lport->host,
548 "Get vNIC configuration failed, "
549 "aborting.\n");
550 goto err_out_dev_close;
551 }
552 host->max_lun = fnic->config.luns_per_tgt;
553 host->max_id = FNIC_MAX_FCP_TARGET;
554 host->max_cmd_len = FCOE_MAX_CMD_LEN;
555
556 fnic_get_res_counts(fnic);
557
558 err = fnic_set_intr_mode(fnic);
559 if (err) {
560 shost_printk(KERN_ERR, fnic->lport->host,
561 "Failed to set intr mode, "
562 "aborting.\n");
563 goto err_out_dev_close;
564 }
565
566 err = fnic_alloc_vnic_resources(fnic);
567 if (err) {
568 shost_printk(KERN_ERR, fnic->lport->host,
569 "Failed to alloc vNIC resources, "
570 "aborting.\n");
571 goto err_out_clear_intr;
572 }
573
574
575 /* initialize all fnic locks */
576 spin_lock_init(&fnic->fnic_lock);
577
578 for (i = 0; i < FNIC_WQ_MAX; i++)
579 spin_lock_init(&fnic->wq_lock[i]);
580
581 for (i = 0; i < FNIC_WQ_COPY_MAX; i++) {
582 spin_lock_init(&fnic->wq_copy_lock[i]);
583 fnic->wq_copy_desc_low[i] = DESC_CLEAN_LOW_WATERMARK;
584 fnic->fw_ack_recd[i] = 0;
585 fnic->fw_ack_index[i] = -1;
586 }
587
588 for (i = 0; i < FNIC_IO_LOCKS; i++)
589 spin_lock_init(&fnic->io_req_lock[i]);
590
591 fnic->io_req_pool = mempool_create_slab_pool(2, fnic_io_req_cache);
592 if (!fnic->io_req_pool)
593 goto err_out_free_resources;
594
595 pool = mempool_create_slab_pool(2, fnic_sgl_cache[FNIC_SGL_CACHE_DFLT]);
596 if (!pool)
597 goto err_out_free_ioreq_pool;
598 fnic->io_sgl_pool[FNIC_SGL_CACHE_DFLT] = pool;
599
600 pool = mempool_create_slab_pool(2, fnic_sgl_cache[FNIC_SGL_CACHE_MAX]);
601 if (!pool)
602 goto err_out_free_dflt_pool;
603 fnic->io_sgl_pool[FNIC_SGL_CACHE_MAX] = pool;
604
605 /* setup vlan config, hw inserts vlan header */
606 fnic->vlan_hw_insert = 1;
607 fnic->vlan_id = 0;
608
609 /* Initialize the FIP fcoe_ctrl struct */
610 fnic->ctlr.send = fnic_eth_send;
611 fnic->ctlr.update_mac = fnic_update_mac;
612 fnic->ctlr.get_src_addr = fnic_get_mac;
613 if (fnic->config.flags & VFCF_FIP_CAPABLE) {
614 shost_printk(KERN_INFO, fnic->lport->host,
615 "firmware supports FIP\n");
616 /* enable directed and multicast */
617 vnic_dev_packet_filter(fnic->vdev, 1, 1, 0, 0, 0);
618 vnic_dev_add_addr(fnic->vdev, FIP_ALL_ENODE_MACS);
619 vnic_dev_add_addr(fnic->vdev, fnic->ctlr.ctl_src_addr);
620 fcoe_ctlr_init(&fnic->ctlr, FIP_MODE_AUTO);
621 } else {
622 shost_printk(KERN_INFO, fnic->lport->host,
623 "firmware uses non-FIP mode\n");
624 fcoe_ctlr_init(&fnic->ctlr, FIP_MODE_NON_FIP);
625 }
626 fnic->state = FNIC_IN_FC_MODE;
627
628 /* Enable hardware stripping of vlan header on ingress */
629 fnic_set_nic_config(fnic, 0, 0, 0, 0, 0, 0, 1);
630
631 /* Setup notification buffer area */
632 err = fnic_notify_set(fnic);
633 if (err) {
634 shost_printk(KERN_ERR, fnic->lport->host,
635 "Failed to alloc notify buffer, aborting.\n");
636 goto err_out_free_max_pool;
637 }
638
639 /* Setup notify timer when using MSI interrupts */
640 if (vnic_dev_get_intr_mode(fnic->vdev) == VNIC_DEV_INTR_MODE_MSI)
641 setup_timer(&fnic->notify_timer,
642 fnic_notify_timer, (unsigned long)fnic);
643
644 /* allocate RQ buffers and post them to RQ*/
645 for (i = 0; i < fnic->rq_count; i++) {
646 err = vnic_rq_fill(&fnic->rq[i], fnic_alloc_rq_frame);
647 if (err) {
648 shost_printk(KERN_ERR, fnic->lport->host,
649 "fnic_alloc_rq_frame can't alloc "
650 "frame\n");
651 goto err_out_free_rq_buf;
652 }
653 }
654
655 /*
656 * Initialization done with PCI system, hardware, firmware.
657 * Add host to SCSI
658 */
659 err = scsi_add_host(lp->host, &pdev->dev);
660 if (err) {
661 shost_printk(KERN_ERR, fnic->lport->host,
662 "fnic: scsi_add_host failed...exiting\n");
663 goto err_out_free_rq_buf;
664 }
665
666 /* Start local port initiatialization */
667
668 lp->link_up = 0;
669
670 lp->max_retry_count = fnic->config.flogi_retries;
671 lp->max_rport_retry_count = fnic->config.plogi_retries;
672 lp->service_params = (FCP_SPPF_INIT_FCN | FCP_SPPF_RD_XRDY_DIS |
673 FCP_SPPF_CONF_COMPL);
674 if (fnic->config.flags & VFCF_FCP_SEQ_LVL_ERR)
675 lp->service_params |= FCP_SPPF_RETRY;
676
677 lp->boot_time = jiffies;
678 lp->e_d_tov = fnic->config.ed_tov;
679 lp->r_a_tov = fnic->config.ra_tov;
680 lp->link_supported_speeds = FC_PORTSPEED_10GBIT;
681 fc_set_wwnn(lp, fnic->config.node_wwn);
682 fc_set_wwpn(lp, fnic->config.port_wwn);
683
684 fcoe_libfc_config(lp, &fnic->ctlr, &fnic_transport_template, 0);
685
686 if (!fc_exch_mgr_alloc(lp, FC_CLASS_3, FCPIO_HOST_EXCH_RANGE_START,
687 FCPIO_HOST_EXCH_RANGE_END, NULL)) {
688 err = -ENOMEM;
689 goto err_out_remove_scsi_host;
690 }
691
692 fc_lport_init_stats(lp);
693
694 fc_lport_config(lp);
695
696 if (fc_set_mfs(lp, fnic->config.maxdatafieldsize +
697 sizeof(struct fc_frame_header))) {
698 err = -EINVAL;
699 goto err_out_free_exch_mgr;
700 }
701 fc_host_maxframe_size(lp->host) = lp->mfs;
702 fc_host_dev_loss_tmo(lp->host) = fnic->config.port_down_timeout / 1000;
703
704 sprintf(fc_host_symbolic_name(lp->host),
705 DRV_NAME " v" DRV_VERSION " over %s", fnic->name);
706
707 spin_lock_irqsave(&fnic_list_lock, flags);
708 list_add_tail(&fnic->list, &fnic_list);
709 spin_unlock_irqrestore(&fnic_list_lock, flags);
710
711 INIT_WORK(&fnic->link_work, fnic_handle_link);
712 INIT_WORK(&fnic->frame_work, fnic_handle_frame);
713 skb_queue_head_init(&fnic->frame_queue);
714 skb_queue_head_init(&fnic->tx_queue);
715
716 /* Enable all queues */
717 for (i = 0; i < fnic->raw_wq_count; i++)
718 vnic_wq_enable(&fnic->wq[i]);
719 for (i = 0; i < fnic->rq_count; i++)
720 vnic_rq_enable(&fnic->rq[i]);
721 for (i = 0; i < fnic->wq_copy_count; i++)
722 vnic_wq_copy_enable(&fnic->wq_copy[i]);
723
724 fc_fabric_login(lp);
725
726 vnic_dev_enable(fnic->vdev);
727
728 err = fnic_request_intr(fnic);
729 if (err) {
730 shost_printk(KERN_ERR, fnic->lport->host,
731 "Unable to request irq.\n");
732 goto err_out_free_exch_mgr;
733 }
734
735 for (i = 0; i < fnic->intr_count; i++)
736 vnic_intr_unmask(&fnic->intr[i]);
737
738 fnic_notify_timer_start(fnic);
739
740 return 0;
741
742 err_out_free_exch_mgr:
743 fc_exch_mgr_free(lp);
744 err_out_remove_scsi_host:
745 fc_remove_host(lp->host);
746 scsi_remove_host(lp->host);
747 err_out_free_rq_buf:
748 for (i = 0; i < fnic->rq_count; i++)
749 vnic_rq_clean(&fnic->rq[i], fnic_free_rq_buf);
750 vnic_dev_notify_unset(fnic->vdev);
751 err_out_free_max_pool:
752 mempool_destroy(fnic->io_sgl_pool[FNIC_SGL_CACHE_MAX]);
753 err_out_free_dflt_pool:
754 mempool_destroy(fnic->io_sgl_pool[FNIC_SGL_CACHE_DFLT]);
755 err_out_free_ioreq_pool:
756 mempool_destroy(fnic->io_req_pool);
757 err_out_free_resources:
758 fnic_free_vnic_resources(fnic);
759 err_out_clear_intr:
760 fnic_clear_intr_mode(fnic);
761 err_out_dev_close:
762 vnic_dev_close(fnic->vdev);
763 err_out_vnic_unregister:
764 vnic_dev_unregister(fnic->vdev);
765 err_out_iounmap:
766 fnic_iounmap(fnic);
767 err_out_release_regions:
768 pci_release_regions(pdev);
769 err_out_disable_device:
770 pci_disable_device(pdev);
771 err_out_free_hba:
772 scsi_host_put(lp->host);
773 err_out:
774 return err;
775 }
776
fnic_remove(struct pci_dev * pdev)777 static void __devexit fnic_remove(struct pci_dev *pdev)
778 {
779 struct fnic *fnic = pci_get_drvdata(pdev);
780 struct fc_lport *lp = fnic->lport;
781 unsigned long flags;
782
783 /*
784 * Mark state so that the workqueue thread stops forwarding
785 * received frames and link events to the local port. ISR and
786 * other threads that can queue work items will also stop
787 * creating work items on the fnic workqueue
788 */
789 spin_lock_irqsave(&fnic->fnic_lock, flags);
790 fnic->stop_rx_link_events = 1;
791 spin_unlock_irqrestore(&fnic->fnic_lock, flags);
792
793 if (vnic_dev_get_intr_mode(fnic->vdev) == VNIC_DEV_INTR_MODE_MSI)
794 del_timer_sync(&fnic->notify_timer);
795
796 /*
797 * Flush the fnic event queue. After this call, there should
798 * be no event queued for this fnic device in the workqueue
799 */
800 flush_workqueue(fnic_event_queue);
801 skb_queue_purge(&fnic->frame_queue);
802 skb_queue_purge(&fnic->tx_queue);
803
804 /*
805 * Log off the fabric. This stops all remote ports, dns port,
806 * logs off the fabric. This flushes all rport, disc, lport work
807 * before returning
808 */
809 fc_fabric_logoff(fnic->lport);
810
811 spin_lock_irqsave(&fnic->fnic_lock, flags);
812 fnic->in_remove = 1;
813 spin_unlock_irqrestore(&fnic->fnic_lock, flags);
814
815 fcoe_ctlr_destroy(&fnic->ctlr);
816 fc_lport_destroy(lp);
817
818 /*
819 * This stops the fnic device, masks all interrupts. Completed
820 * CQ entries are drained. Posted WQ/RQ/Copy-WQ entries are
821 * cleaned up
822 */
823 fnic_cleanup(fnic);
824
825 BUG_ON(!skb_queue_empty(&fnic->frame_queue));
826 BUG_ON(!skb_queue_empty(&fnic->tx_queue));
827
828 spin_lock_irqsave(&fnic_list_lock, flags);
829 list_del(&fnic->list);
830 spin_unlock_irqrestore(&fnic_list_lock, flags);
831
832 fc_remove_host(fnic->lport->host);
833 scsi_remove_host(fnic->lport->host);
834 fc_exch_mgr_free(fnic->lport);
835 vnic_dev_notify_unset(fnic->vdev);
836 fnic_free_intr(fnic);
837 fnic_free_vnic_resources(fnic);
838 fnic_clear_intr_mode(fnic);
839 vnic_dev_close(fnic->vdev);
840 vnic_dev_unregister(fnic->vdev);
841 fnic_iounmap(fnic);
842 pci_release_regions(pdev);
843 pci_disable_device(pdev);
844 pci_set_drvdata(pdev, NULL);
845 scsi_host_put(lp->host);
846 }
847
848 static struct pci_driver fnic_driver = {
849 .name = DRV_NAME,
850 .id_table = fnic_id_table,
851 .probe = fnic_probe,
852 .remove = __devexit_p(fnic_remove),
853 };
854
fnic_init_module(void)855 static int __init fnic_init_module(void)
856 {
857 size_t len;
858 int err = 0;
859
860 printk(KERN_INFO PFX "%s, ver %s\n", DRV_DESCRIPTION, DRV_VERSION);
861
862 /* Create a cache for allocation of default size sgls */
863 len = sizeof(struct fnic_dflt_sgl_list);
864 fnic_sgl_cache[FNIC_SGL_CACHE_DFLT] = kmem_cache_create
865 ("fnic_sgl_dflt", len + FNIC_SG_DESC_ALIGN, FNIC_SG_DESC_ALIGN,
866 SLAB_HWCACHE_ALIGN,
867 NULL);
868 if (!fnic_sgl_cache[FNIC_SGL_CACHE_DFLT]) {
869 printk(KERN_ERR PFX "failed to create fnic dflt sgl slab\n");
870 err = -ENOMEM;
871 goto err_create_fnic_sgl_slab_dflt;
872 }
873
874 /* Create a cache for allocation of max size sgls*/
875 len = sizeof(struct fnic_sgl_list);
876 fnic_sgl_cache[FNIC_SGL_CACHE_MAX] = kmem_cache_create
877 ("fnic_sgl_max", len + FNIC_SG_DESC_ALIGN, FNIC_SG_DESC_ALIGN,
878 SLAB_HWCACHE_ALIGN,
879 NULL);
880 if (!fnic_sgl_cache[FNIC_SGL_CACHE_MAX]) {
881 printk(KERN_ERR PFX "failed to create fnic max sgl slab\n");
882 err = -ENOMEM;
883 goto err_create_fnic_sgl_slab_max;
884 }
885
886 /* Create a cache of io_req structs for use via mempool */
887 fnic_io_req_cache = kmem_cache_create("fnic_io_req",
888 sizeof(struct fnic_io_req),
889 0, SLAB_HWCACHE_ALIGN, NULL);
890 if (!fnic_io_req_cache) {
891 printk(KERN_ERR PFX "failed to create fnic io_req slab\n");
892 err = -ENOMEM;
893 goto err_create_fnic_ioreq_slab;
894 }
895
896 fnic_event_queue = create_singlethread_workqueue("fnic_event_wq");
897 if (!fnic_event_queue) {
898 printk(KERN_ERR PFX "fnic work queue create failed\n");
899 err = -ENOMEM;
900 goto err_create_fnic_workq;
901 }
902
903 spin_lock_init(&fnic_list_lock);
904 INIT_LIST_HEAD(&fnic_list);
905
906 fnic_fc_transport = fc_attach_transport(&fnic_fc_functions);
907 if (!fnic_fc_transport) {
908 printk(KERN_ERR PFX "fc_attach_transport error\n");
909 err = -ENOMEM;
910 goto err_fc_transport;
911 }
912
913 /* register the driver with PCI system */
914 err = pci_register_driver(&fnic_driver);
915 if (err < 0) {
916 printk(KERN_ERR PFX "pci register error\n");
917 goto err_pci_register;
918 }
919 return err;
920
921 err_pci_register:
922 fc_release_transport(fnic_fc_transport);
923 err_fc_transport:
924 destroy_workqueue(fnic_event_queue);
925 err_create_fnic_workq:
926 kmem_cache_destroy(fnic_io_req_cache);
927 err_create_fnic_ioreq_slab:
928 kmem_cache_destroy(fnic_sgl_cache[FNIC_SGL_CACHE_MAX]);
929 err_create_fnic_sgl_slab_max:
930 kmem_cache_destroy(fnic_sgl_cache[FNIC_SGL_CACHE_DFLT]);
931 err_create_fnic_sgl_slab_dflt:
932 return err;
933 }
934
fnic_cleanup_module(void)935 static void __exit fnic_cleanup_module(void)
936 {
937 pci_unregister_driver(&fnic_driver);
938 destroy_workqueue(fnic_event_queue);
939 kmem_cache_destroy(fnic_sgl_cache[FNIC_SGL_CACHE_MAX]);
940 kmem_cache_destroy(fnic_sgl_cache[FNIC_SGL_CACHE_DFLT]);
941 kmem_cache_destroy(fnic_io_req_cache);
942 fc_release_transport(fnic_fc_transport);
943 }
944
945 module_init(fnic_init_module);
946 module_exit(fnic_cleanup_module);
947
948