2 * Copyright 2008 Cisco Systems, Inc. All rights reserved.
3 * Copyright 2007 Nuova Systems, Inc. All rights reserved.
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.
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
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>
39 #include "vnic_intr.h"
40 #include "vnic_stats.h"
45 #define PCI_DEVICE_ID_CISCO_FNIC 0x0045
47 /* Timer to poll notification area for events. Used for MSI interrupts */
48 #define FNIC_NOTIFY_TIMER_PERIOD (2 * HZ)
50 static struct kmem_cache *fnic_sgl_cache[FNIC_SGL_NUM_CACHES];
51 static struct kmem_cache *fnic_io_req_cache;
53 DEFINE_SPINLOCK(fnic_list_lock);
55 /* Supported devices by fnic module */
56 static struct pci_device_id fnic_id_table[] = {
57 { PCI_DEVICE(PCI_VENDOR_ID_CISCO, PCI_DEVICE_ID_CISCO_FNIC) },
61 MODULE_DESCRIPTION(DRV_DESCRIPTION);
62 MODULE_AUTHOR("Abhijeet Joglekar <abjoglek@cisco.com>, "
63 "Joseph R. Eykholt <jeykholt@cisco.com>");
64 MODULE_LICENSE("GPL v2");
65 MODULE_VERSION(DRV_VERSION);
66 MODULE_DEVICE_TABLE(pci, fnic_id_table);
68 unsigned int fnic_log_level;
69 module_param(fnic_log_level, int, S_IRUGO|S_IWUSR);
70 MODULE_PARM_DESC(fnic_log_level, "bit mask of fnic logging levels");
72 unsigned int fnic_trace_max_pages = 16;
73 module_param(fnic_trace_max_pages, uint, S_IRUGO|S_IWUSR);
74 MODULE_PARM_DESC(fnic_trace_max_pages, "Total allocated memory pages "
75 "for fnic trace buffer");
77 unsigned int fnic_fc_trace_max_pages = 64;
78 module_param(fnic_fc_trace_max_pages, uint, S_IRUGO|S_IWUSR);
79 MODULE_PARM_DESC(fnic_fc_trace_max_pages,
80 "Total allocated memory pages for fc trace buffer");
82 static unsigned int fnic_max_qdepth = FNIC_DFLT_QUEUE_DEPTH;
83 module_param(fnic_max_qdepth, uint, S_IRUGO|S_IWUSR);
84 MODULE_PARM_DESC(fnic_max_qdepth, "Queue depth to report for each LUN");
86 static struct libfc_function_template fnic_transport_template = {
87 .frame_send = fnic_send,
88 .lport_set_port_id = fnic_set_port_id,
89 .fcp_abort_io = fnic_empty_scsi_cleanup,
90 .fcp_cleanup = fnic_empty_scsi_cleanup,
91 .exch_mgr_reset = fnic_exch_mgr_reset
94 static int fnic_slave_alloc(struct scsi_device *sdev)
96 struct fc_rport *rport = starget_to_rport(scsi_target(sdev));
98 sdev->tagged_supported = 1;
100 if (!rport || fc_remote_port_chkready(rport))
103 scsi_adjust_queue_depth(sdev, 0, fnic_max_qdepth);
107 static struct scsi_host_template fnic_host_template = {
108 .module = THIS_MODULE,
110 .queuecommand = fnic_queuecommand,
111 .eh_abort_handler = fnic_abort_cmd,
112 .eh_device_reset_handler = fnic_device_reset,
113 .eh_host_reset_handler = fnic_host_reset,
114 .slave_alloc = fnic_slave_alloc,
115 .change_queue_depth = fc_change_queue_depth,
116 .change_queue_type = scsi_change_queue_type,
119 .can_queue = FNIC_DFLT_IO_REQ,
120 .use_clustering = ENABLE_CLUSTERING,
121 .sg_tablesize = FNIC_MAX_SG_DESC_CNT,
122 .max_sectors = 0xffff,
123 .shost_attrs = fnic_attrs,
128 fnic_set_rport_dev_loss_tmo(struct fc_rport *rport, u32 timeout)
131 rport->dev_loss_tmo = timeout;
133 rport->dev_loss_tmo = 1;
136 static void fnic_get_host_speed(struct Scsi_Host *shost);
137 static struct scsi_transport_template *fnic_fc_transport;
138 static struct fc_host_statistics *fnic_get_stats(struct Scsi_Host *);
139 static void fnic_reset_host_stats(struct Scsi_Host *);
141 static struct fc_function_template fnic_fc_functions = {
143 .show_host_node_name = 1,
144 .show_host_port_name = 1,
145 .show_host_supported_classes = 1,
146 .show_host_supported_fc4s = 1,
147 .show_host_active_fc4s = 1,
148 .show_host_maxframe_size = 1,
149 .show_host_port_id = 1,
150 .show_host_supported_speeds = 1,
151 .get_host_speed = fnic_get_host_speed,
152 .show_host_speed = 1,
153 .show_host_port_type = 1,
154 .get_host_port_state = fc_get_host_port_state,
155 .show_host_port_state = 1,
156 .show_host_symbolic_name = 1,
157 .show_rport_maxframe_size = 1,
158 .show_rport_supported_classes = 1,
159 .show_host_fabric_name = 1,
160 .show_starget_node_name = 1,
161 .show_starget_port_name = 1,
162 .show_starget_port_id = 1,
163 .show_rport_dev_loss_tmo = 1,
164 .set_rport_dev_loss_tmo = fnic_set_rport_dev_loss_tmo,
165 .issue_fc_host_lip = fnic_reset,
166 .get_fc_host_stats = fnic_get_stats,
167 .reset_fc_host_stats = fnic_reset_host_stats,
168 .dd_fcrport_size = sizeof(struct fc_rport_libfc_priv),
169 .terminate_rport_io = fnic_terminate_rport_io,
170 .bsg_request = fc_lport_bsg_request,
173 static void fnic_get_host_speed(struct Scsi_Host *shost)
175 struct fc_lport *lp = shost_priv(shost);
176 struct fnic *fnic = lport_priv(lp);
177 u32 port_speed = vnic_dev_port_speed(fnic->vdev);
179 /* Add in other values as they get defined in fw */
180 switch (port_speed) {
182 fc_host_speed(shost) = FC_PORTSPEED_10GBIT;
185 fc_host_speed(shost) = FC_PORTSPEED_10GBIT;
190 static struct fc_host_statistics *fnic_get_stats(struct Scsi_Host *host)
193 struct fc_lport *lp = shost_priv(host);
194 struct fnic *fnic = lport_priv(lp);
195 struct fc_host_statistics *stats = &lp->host_stats;
196 struct vnic_stats *vs;
199 if (time_before(jiffies, fnic->stats_time + HZ / FNIC_STATS_RATE_LIMIT))
201 fnic->stats_time = jiffies;
203 spin_lock_irqsave(&fnic->fnic_lock, flags);
204 ret = vnic_dev_stats_dump(fnic->vdev, &fnic->stats);
205 spin_unlock_irqrestore(&fnic->fnic_lock, flags);
208 FNIC_MAIN_DBG(KERN_DEBUG, fnic->lport->host,
209 "fnic: Get vnic stats failed"
214 stats->tx_frames = vs->tx.tx_unicast_frames_ok;
215 stats->tx_words = vs->tx.tx_unicast_bytes_ok / 4;
216 stats->rx_frames = vs->rx.rx_unicast_frames_ok;
217 stats->rx_words = vs->rx.rx_unicast_bytes_ok / 4;
218 stats->error_frames = vs->tx.tx_errors + vs->rx.rx_errors;
219 stats->dumped_frames = vs->tx.tx_drops + vs->rx.rx_drop;
220 stats->invalid_crc_count = vs->rx.rx_crc_errors;
221 stats->seconds_since_last_reset =
222 (jiffies - fnic->stats_reset_time) / HZ;
223 stats->fcp_input_megabytes = div_u64(fnic->fcp_input_bytes, 1000000);
224 stats->fcp_output_megabytes = div_u64(fnic->fcp_output_bytes, 1000000);
230 * fnic_dump_fchost_stats
231 * note : dumps fc_statistics into system logs
233 void fnic_dump_fchost_stats(struct Scsi_Host *host,
234 struct fc_host_statistics *stats)
236 FNIC_MAIN_NOTE(KERN_NOTICE, host,
237 "fnic: seconds since last reset = %llu\n",
238 stats->seconds_since_last_reset);
239 FNIC_MAIN_NOTE(KERN_NOTICE, host,
240 "fnic: tx frames = %llu\n",
242 FNIC_MAIN_NOTE(KERN_NOTICE, host,
243 "fnic: tx words = %llu\n",
245 FNIC_MAIN_NOTE(KERN_NOTICE, host,
246 "fnic: rx frames = %llu\n",
248 FNIC_MAIN_NOTE(KERN_NOTICE, host,
249 "fnic: rx words = %llu\n",
251 FNIC_MAIN_NOTE(KERN_NOTICE, host,
252 "fnic: lip count = %llu\n",
254 FNIC_MAIN_NOTE(KERN_NOTICE, host,
255 "fnic: nos count = %llu\n",
257 FNIC_MAIN_NOTE(KERN_NOTICE, host,
258 "fnic: error frames = %llu\n",
259 stats->error_frames);
260 FNIC_MAIN_NOTE(KERN_NOTICE, host,
261 "fnic: dumped frames = %llu\n",
262 stats->dumped_frames);
263 FNIC_MAIN_NOTE(KERN_NOTICE, host,
264 "fnic: link failure count = %llu\n",
265 stats->link_failure_count);
266 FNIC_MAIN_NOTE(KERN_NOTICE, host,
267 "fnic: loss of sync count = %llu\n",
268 stats->loss_of_sync_count);
269 FNIC_MAIN_NOTE(KERN_NOTICE, host,
270 "fnic: loss of signal count = %llu\n",
271 stats->loss_of_signal_count);
272 FNIC_MAIN_NOTE(KERN_NOTICE, host,
273 "fnic: prim seq protocol err count = %llu\n",
274 stats->prim_seq_protocol_err_count);
275 FNIC_MAIN_NOTE(KERN_NOTICE, host,
276 "fnic: invalid tx word count= %llu\n",
277 stats->invalid_tx_word_count);
278 FNIC_MAIN_NOTE(KERN_NOTICE, host,
279 "fnic: invalid crc count = %llu\n",
280 stats->invalid_crc_count);
281 FNIC_MAIN_NOTE(KERN_NOTICE, host,
282 "fnic: fcp input requests = %llu\n",
283 stats->fcp_input_requests);
284 FNIC_MAIN_NOTE(KERN_NOTICE, host,
285 "fnic: fcp output requests = %llu\n",
286 stats->fcp_output_requests);
287 FNIC_MAIN_NOTE(KERN_NOTICE, host,
288 "fnic: fcp control requests = %llu\n",
289 stats->fcp_control_requests);
290 FNIC_MAIN_NOTE(KERN_NOTICE, host,
291 "fnic: fcp input megabytes = %llu\n",
292 stats->fcp_input_megabytes);
293 FNIC_MAIN_NOTE(KERN_NOTICE, host,
294 "fnic: fcp output megabytes = %llu\n",
295 stats->fcp_output_megabytes);
300 * fnic_reset_host_stats : clears host stats
301 * note : called when reset_statistics set under sysfs dir
303 static void fnic_reset_host_stats(struct Scsi_Host *host)
306 struct fc_lport *lp = shost_priv(host);
307 struct fnic *fnic = lport_priv(lp);
308 struct fc_host_statistics *stats;
311 /* dump current stats, before clearing them */
312 stats = fnic_get_stats(host);
313 fnic_dump_fchost_stats(host, stats);
315 spin_lock_irqsave(&fnic->fnic_lock, flags);
316 ret = vnic_dev_stats_clear(fnic->vdev);
317 spin_unlock_irqrestore(&fnic->fnic_lock, flags);
320 FNIC_MAIN_DBG(KERN_DEBUG, fnic->lport->host,
321 "fnic: Reset vnic stats failed"
325 fnic->stats_reset_time = jiffies;
326 memset(stats, 0, sizeof(*stats));
331 void fnic_log_q_error(struct fnic *fnic)
336 for (i = 0; i < fnic->raw_wq_count; i++) {
337 error_status = ioread32(&fnic->wq[i].ctrl->error_status);
339 shost_printk(KERN_ERR, fnic->lport->host,
340 "WQ[%d] error_status"
341 " %d\n", i, error_status);
344 for (i = 0; i < fnic->rq_count; i++) {
345 error_status = ioread32(&fnic->rq[i].ctrl->error_status);
347 shost_printk(KERN_ERR, fnic->lport->host,
348 "RQ[%d] error_status"
349 " %d\n", i, error_status);
352 for (i = 0; i < fnic->wq_copy_count; i++) {
353 error_status = ioread32(&fnic->wq_copy[i].ctrl->error_status);
355 shost_printk(KERN_ERR, fnic->lport->host,
356 "CWQ[%d] error_status"
357 " %d\n", i, error_status);
361 void fnic_handle_link_event(struct fnic *fnic)
365 spin_lock_irqsave(&fnic->fnic_lock, flags);
366 if (fnic->stop_rx_link_events) {
367 spin_unlock_irqrestore(&fnic->fnic_lock, flags);
370 spin_unlock_irqrestore(&fnic->fnic_lock, flags);
372 queue_work(fnic_event_queue, &fnic->link_work);
376 static int fnic_notify_set(struct fnic *fnic)
380 switch (vnic_dev_get_intr_mode(fnic->vdev)) {
381 case VNIC_DEV_INTR_MODE_INTX:
382 err = vnic_dev_notify_set(fnic->vdev, FNIC_INTX_NOTIFY);
384 case VNIC_DEV_INTR_MODE_MSI:
385 err = vnic_dev_notify_set(fnic->vdev, -1);
387 case VNIC_DEV_INTR_MODE_MSIX:
388 err = vnic_dev_notify_set(fnic->vdev, FNIC_MSIX_ERR_NOTIFY);
391 shost_printk(KERN_ERR, fnic->lport->host,
392 "Interrupt mode should be set up"
393 " before devcmd notify set %d\n",
394 vnic_dev_get_intr_mode(fnic->vdev));
402 static void fnic_notify_timer(unsigned long data)
404 struct fnic *fnic = (struct fnic *)data;
406 fnic_handle_link_event(fnic);
407 mod_timer(&fnic->notify_timer,
408 round_jiffies(jiffies + FNIC_NOTIFY_TIMER_PERIOD));
411 static void fnic_fip_notify_timer(unsigned long data)
413 struct fnic *fnic = (struct fnic *)data;
415 fnic_handle_fip_timer(fnic);
418 static void fnic_notify_timer_start(struct fnic *fnic)
420 switch (vnic_dev_get_intr_mode(fnic->vdev)) {
421 case VNIC_DEV_INTR_MODE_MSI:
423 * Schedule first timeout immediately. The driver is
424 * initiatialized and ready to look for link up notification
426 mod_timer(&fnic->notify_timer, jiffies);
429 /* Using intr for notification for INTx/MSI-X */
434 static int fnic_dev_wait(struct vnic_dev *vdev,
435 int (*start)(struct vnic_dev *, int),
436 int (*finished)(struct vnic_dev *, int *),
443 err = start(vdev, arg);
447 /* Wait for func to complete...2 seconds max */
448 time = jiffies + (HZ * 2);
450 err = finished(vdev, &done);
455 schedule_timeout_uninterruptible(HZ / 10);
456 } while (time_after(time, jiffies));
461 static int fnic_cleanup(struct fnic *fnic)
466 vnic_dev_disable(fnic->vdev);
467 for (i = 0; i < fnic->intr_count; i++)
468 vnic_intr_mask(&fnic->intr[i]);
470 for (i = 0; i < fnic->rq_count; i++) {
471 err = vnic_rq_disable(&fnic->rq[i]);
475 for (i = 0; i < fnic->raw_wq_count; i++) {
476 err = vnic_wq_disable(&fnic->wq[i]);
480 for (i = 0; i < fnic->wq_copy_count; i++) {
481 err = vnic_wq_copy_disable(&fnic->wq_copy[i]);
486 /* Clean up completed IOs and FCS frames */
487 fnic_wq_copy_cmpl_handler(fnic, -1);
488 fnic_wq_cmpl_handler(fnic, -1);
489 fnic_rq_cmpl_handler(fnic, -1);
491 /* Clean up the IOs and FCS frames that have not completed */
492 for (i = 0; i < fnic->raw_wq_count; i++)
493 vnic_wq_clean(&fnic->wq[i], fnic_free_wq_buf);
494 for (i = 0; i < fnic->rq_count; i++)
495 vnic_rq_clean(&fnic->rq[i], fnic_free_rq_buf);
496 for (i = 0; i < fnic->wq_copy_count; i++)
497 vnic_wq_copy_clean(&fnic->wq_copy[i],
498 fnic_wq_copy_cleanup_handler);
500 for (i = 0; i < fnic->cq_count; i++)
501 vnic_cq_clean(&fnic->cq[i]);
502 for (i = 0; i < fnic->intr_count; i++)
503 vnic_intr_clean(&fnic->intr[i]);
505 mempool_destroy(fnic->io_req_pool);
506 for (i = 0; i < FNIC_SGL_NUM_CACHES; i++)
507 mempool_destroy(fnic->io_sgl_pool[i]);
512 static void fnic_iounmap(struct fnic *fnic)
514 if (fnic->bar0.vaddr)
515 iounmap(fnic->bar0.vaddr);
519 * fnic_get_mac() - get assigned data MAC address for FIP code.
520 * @lport: local port.
522 static u8 *fnic_get_mac(struct fc_lport *lport)
524 struct fnic *fnic = lport_priv(lport);
526 return fnic->data_src_addr;
529 static void fnic_set_vlan(struct fnic *fnic, u16 vlan_id)
532 old_vlan = vnic_dev_set_default_vlan(fnic->vdev, vlan_id);
535 static int fnic_probe(struct pci_dev *pdev, const struct pci_device_id *ent)
537 struct Scsi_Host *host;
546 * Allocate SCSI Host and set up association between host,
547 * local port, and fnic
549 lp = libfc_host_alloc(&fnic_host_template, sizeof(struct fnic));
551 printk(KERN_ERR PFX "Unable to alloc libfc local port\n");
556 fnic = lport_priv(lp);
560 snprintf(fnic->name, sizeof(fnic->name) - 1, "%s%d", DRV_NAME,
563 host->transportt = fnic_fc_transport;
565 err = fnic_stats_debugfs_init(fnic);
567 shost_printk(KERN_ERR, fnic->lport->host,
568 "Failed to initialize debugfs for stats\n");
569 fnic_stats_debugfs_remove(fnic);
572 /* Setup PCI resources */
573 pci_set_drvdata(pdev, fnic);
577 err = pci_enable_device(pdev);
579 shost_printk(KERN_ERR, fnic->lport->host,
580 "Cannot enable PCI device, aborting.\n");
581 goto err_out_free_hba;
584 err = pci_request_regions(pdev, DRV_NAME);
586 shost_printk(KERN_ERR, fnic->lport->host,
587 "Cannot enable PCI resources, aborting\n");
588 goto err_out_disable_device;
591 pci_set_master(pdev);
593 /* Query PCI controller on system for DMA addressing
594 * limitation for the device. Try 64-bit first, and
597 err = pci_set_dma_mask(pdev, DMA_BIT_MASK(64));
599 err = pci_set_dma_mask(pdev, DMA_BIT_MASK(32));
601 shost_printk(KERN_ERR, fnic->lport->host,
602 "No usable DMA configuration "
604 goto err_out_release_regions;
606 err = pci_set_consistent_dma_mask(pdev, DMA_BIT_MASK(32));
608 shost_printk(KERN_ERR, fnic->lport->host,
609 "Unable to obtain 32-bit DMA "
610 "for consistent allocations, aborting.\n");
611 goto err_out_release_regions;
614 err = pci_set_consistent_dma_mask(pdev, DMA_BIT_MASK(64));
616 shost_printk(KERN_ERR, fnic->lport->host,
617 "Unable to obtain 64-bit DMA "
618 "for consistent allocations, aborting.\n");
619 goto err_out_release_regions;
623 /* Map vNIC resources from BAR0 */
624 if (!(pci_resource_flags(pdev, 0) & IORESOURCE_MEM)) {
625 shost_printk(KERN_ERR, fnic->lport->host,
626 "BAR0 not memory-map'able, aborting.\n");
628 goto err_out_release_regions;
631 fnic->bar0.vaddr = pci_iomap(pdev, 0, 0);
632 fnic->bar0.bus_addr = pci_resource_start(pdev, 0);
633 fnic->bar0.len = pci_resource_len(pdev, 0);
635 if (!fnic->bar0.vaddr) {
636 shost_printk(KERN_ERR, fnic->lport->host,
637 "Cannot memory-map BAR0 res hdr, "
640 goto err_out_release_regions;
643 fnic->vdev = vnic_dev_register(NULL, fnic, pdev, &fnic->bar0);
645 shost_printk(KERN_ERR, fnic->lport->host,
646 "vNIC registration failed, "
649 goto err_out_iounmap;
652 err = fnic_dev_wait(fnic->vdev, vnic_dev_open,
653 vnic_dev_open_done, 0);
655 shost_printk(KERN_ERR, fnic->lport->host,
656 "vNIC dev open failed, aborting.\n");
657 goto err_out_vnic_unregister;
660 err = vnic_dev_init(fnic->vdev, 0);
662 shost_printk(KERN_ERR, fnic->lport->host,
663 "vNIC dev init failed, aborting.\n");
664 goto err_out_dev_close;
667 err = vnic_dev_mac_addr(fnic->vdev, fnic->ctlr.ctl_src_addr);
669 shost_printk(KERN_ERR, fnic->lport->host,
670 "vNIC get MAC addr failed \n");
671 goto err_out_dev_close;
673 /* set data_src for point-to-point mode and to keep it non-zero */
674 memcpy(fnic->data_src_addr, fnic->ctlr.ctl_src_addr, ETH_ALEN);
676 /* Get vNIC configuration */
677 err = fnic_get_vnic_config(fnic);
679 shost_printk(KERN_ERR, fnic->lport->host,
680 "Get vNIC configuration failed, "
682 goto err_out_dev_close;
685 /* Configure Maximum Outstanding IO reqs*/
686 if (fnic->config.io_throttle_count != FNIC_UCSM_DFLT_THROTTLE_CNT_BLD) {
687 host->can_queue = min_t(u32, FNIC_MAX_IO_REQ,
688 max_t(u32, FNIC_MIN_IO_REQ,
689 fnic->config.io_throttle_count));
691 fnic->fnic_max_tag_id = host->can_queue;
693 err = scsi_init_shared_tag_map(host, fnic->fnic_max_tag_id);
695 shost_printk(KERN_ERR, fnic->lport->host,
696 "Unable to alloc shared tag map\n");
697 goto err_out_dev_close;
700 host->max_lun = fnic->config.luns_per_tgt;
701 host->max_id = FNIC_MAX_FCP_TARGET;
702 host->max_cmd_len = FCOE_MAX_CMD_LEN;
704 fnic_get_res_counts(fnic);
706 err = fnic_set_intr_mode(fnic);
708 shost_printk(KERN_ERR, fnic->lport->host,
709 "Failed to set intr mode, "
711 goto err_out_dev_close;
714 err = fnic_alloc_vnic_resources(fnic);
716 shost_printk(KERN_ERR, fnic->lport->host,
717 "Failed to alloc vNIC resources, "
719 goto err_out_clear_intr;
723 /* initialize all fnic locks */
724 spin_lock_init(&fnic->fnic_lock);
726 for (i = 0; i < FNIC_WQ_MAX; i++)
727 spin_lock_init(&fnic->wq_lock[i]);
729 for (i = 0; i < FNIC_WQ_COPY_MAX; i++) {
730 spin_lock_init(&fnic->wq_copy_lock[i]);
731 fnic->wq_copy_desc_low[i] = DESC_CLEAN_LOW_WATERMARK;
732 fnic->fw_ack_recd[i] = 0;
733 fnic->fw_ack_index[i] = -1;
736 for (i = 0; i < FNIC_IO_LOCKS; i++)
737 spin_lock_init(&fnic->io_req_lock[i]);
739 fnic->io_req_pool = mempool_create_slab_pool(2, fnic_io_req_cache);
740 if (!fnic->io_req_pool)
741 goto err_out_free_resources;
743 pool = mempool_create_slab_pool(2, fnic_sgl_cache[FNIC_SGL_CACHE_DFLT]);
745 goto err_out_free_ioreq_pool;
746 fnic->io_sgl_pool[FNIC_SGL_CACHE_DFLT] = pool;
748 pool = mempool_create_slab_pool(2, fnic_sgl_cache[FNIC_SGL_CACHE_MAX]);
750 goto err_out_free_dflt_pool;
751 fnic->io_sgl_pool[FNIC_SGL_CACHE_MAX] = pool;
753 /* setup vlan config, hw inserts vlan header */
754 fnic->vlan_hw_insert = 1;
757 /* Initialize the FIP fcoe_ctrl struct */
758 fnic->ctlr.send = fnic_eth_send;
759 fnic->ctlr.update_mac = fnic_update_mac;
760 fnic->ctlr.get_src_addr = fnic_get_mac;
761 if (fnic->config.flags & VFCF_FIP_CAPABLE) {
762 shost_printk(KERN_INFO, fnic->lport->host,
763 "firmware supports FIP\n");
764 /* enable directed and multicast */
765 vnic_dev_packet_filter(fnic->vdev, 1, 1, 0, 0, 0);
766 vnic_dev_add_addr(fnic->vdev, FIP_ALL_ENODE_MACS);
767 vnic_dev_add_addr(fnic->vdev, fnic->ctlr.ctl_src_addr);
768 fnic->set_vlan = fnic_set_vlan;
769 fcoe_ctlr_init(&fnic->ctlr, FIP_MODE_AUTO);
770 setup_timer(&fnic->fip_timer, fnic_fip_notify_timer,
771 (unsigned long)fnic);
772 spin_lock_init(&fnic->vlans_lock);
773 INIT_WORK(&fnic->fip_frame_work, fnic_handle_fip_frame);
774 INIT_WORK(&fnic->event_work, fnic_handle_event);
775 skb_queue_head_init(&fnic->fip_frame_queue);
776 INIT_LIST_HEAD(&fnic->evlist);
777 INIT_LIST_HEAD(&fnic->vlans);
779 shost_printk(KERN_INFO, fnic->lport->host,
780 "firmware uses non-FIP mode\n");
781 fcoe_ctlr_init(&fnic->ctlr, FIP_MODE_NON_FIP);
782 fnic->ctlr.state = FIP_ST_NON_FIP;
784 fnic->state = FNIC_IN_FC_MODE;
786 atomic_set(&fnic->in_flight, 0);
787 fnic->state_flags = FNIC_FLAGS_NONE;
789 /* Enable hardware stripping of vlan header on ingress */
790 fnic_set_nic_config(fnic, 0, 0, 0, 0, 0, 0, 1);
792 /* Setup notification buffer area */
793 err = fnic_notify_set(fnic);
795 shost_printk(KERN_ERR, fnic->lport->host,
796 "Failed to alloc notify buffer, aborting.\n");
797 goto err_out_free_max_pool;
800 /* Setup notify timer when using MSI interrupts */
801 if (vnic_dev_get_intr_mode(fnic->vdev) == VNIC_DEV_INTR_MODE_MSI)
802 setup_timer(&fnic->notify_timer,
803 fnic_notify_timer, (unsigned long)fnic);
805 /* allocate RQ buffers and post them to RQ*/
806 for (i = 0; i < fnic->rq_count; i++) {
807 err = vnic_rq_fill(&fnic->rq[i], fnic_alloc_rq_frame);
809 shost_printk(KERN_ERR, fnic->lport->host,
810 "fnic_alloc_rq_frame can't alloc "
812 goto err_out_free_rq_buf;
817 * Initialization done with PCI system, hardware, firmware.
820 err = scsi_add_host(lp->host, &pdev->dev);
822 shost_printk(KERN_ERR, fnic->lport->host,
823 "fnic: scsi_add_host failed...exiting\n");
824 goto err_out_free_rq_buf;
827 /* Start local port initiatialization */
831 lp->max_retry_count = fnic->config.flogi_retries;
832 lp->max_rport_retry_count = fnic->config.plogi_retries;
833 lp->service_params = (FCP_SPPF_INIT_FCN | FCP_SPPF_RD_XRDY_DIS |
834 FCP_SPPF_CONF_COMPL);
835 if (fnic->config.flags & VFCF_FCP_SEQ_LVL_ERR)
836 lp->service_params |= FCP_SPPF_RETRY;
838 lp->boot_time = jiffies;
839 lp->e_d_tov = fnic->config.ed_tov;
840 lp->r_a_tov = fnic->config.ra_tov;
841 lp->link_supported_speeds = FC_PORTSPEED_10GBIT;
842 fc_set_wwnn(lp, fnic->config.node_wwn);
843 fc_set_wwpn(lp, fnic->config.port_wwn);
845 fcoe_libfc_config(lp, &fnic->ctlr, &fnic_transport_template, 0);
847 if (!fc_exch_mgr_alloc(lp, FC_CLASS_3, FCPIO_HOST_EXCH_RANGE_START,
848 FCPIO_HOST_EXCH_RANGE_END, NULL)) {
850 goto err_out_remove_scsi_host;
853 fc_lport_init_stats(lp);
854 fnic->stats_reset_time = jiffies;
858 if (fc_set_mfs(lp, fnic->config.maxdatafieldsize +
859 sizeof(struct fc_frame_header))) {
861 goto err_out_free_exch_mgr;
863 fc_host_maxframe_size(lp->host) = lp->mfs;
864 fc_host_dev_loss_tmo(lp->host) = fnic->config.port_down_timeout / 1000;
866 sprintf(fc_host_symbolic_name(lp->host),
867 DRV_NAME " v" DRV_VERSION " over %s", fnic->name);
869 spin_lock_irqsave(&fnic_list_lock, flags);
870 list_add_tail(&fnic->list, &fnic_list);
871 spin_unlock_irqrestore(&fnic_list_lock, flags);
873 INIT_WORK(&fnic->link_work, fnic_handle_link);
874 INIT_WORK(&fnic->frame_work, fnic_handle_frame);
875 skb_queue_head_init(&fnic->frame_queue);
876 skb_queue_head_init(&fnic->tx_queue);
878 /* Enable all queues */
879 for (i = 0; i < fnic->raw_wq_count; i++)
880 vnic_wq_enable(&fnic->wq[i]);
881 for (i = 0; i < fnic->rq_count; i++)
882 vnic_rq_enable(&fnic->rq[i]);
883 for (i = 0; i < fnic->wq_copy_count; i++)
884 vnic_wq_copy_enable(&fnic->wq_copy[i]);
888 vnic_dev_enable(fnic->vdev);
890 err = fnic_request_intr(fnic);
892 shost_printk(KERN_ERR, fnic->lport->host,
893 "Unable to request irq.\n");
894 goto err_out_free_exch_mgr;
897 for (i = 0; i < fnic->intr_count; i++)
898 vnic_intr_unmask(&fnic->intr[i]);
900 fnic_notify_timer_start(fnic);
904 err_out_free_exch_mgr:
905 fc_exch_mgr_free(lp);
906 err_out_remove_scsi_host:
907 fc_remove_host(lp->host);
908 scsi_remove_host(lp->host);
910 for (i = 0; i < fnic->rq_count; i++)
911 vnic_rq_clean(&fnic->rq[i], fnic_free_rq_buf);
912 vnic_dev_notify_unset(fnic->vdev);
913 err_out_free_max_pool:
914 mempool_destroy(fnic->io_sgl_pool[FNIC_SGL_CACHE_MAX]);
915 err_out_free_dflt_pool:
916 mempool_destroy(fnic->io_sgl_pool[FNIC_SGL_CACHE_DFLT]);
917 err_out_free_ioreq_pool:
918 mempool_destroy(fnic->io_req_pool);
919 err_out_free_resources:
920 fnic_free_vnic_resources(fnic);
922 fnic_clear_intr_mode(fnic);
924 vnic_dev_close(fnic->vdev);
925 err_out_vnic_unregister:
926 vnic_dev_unregister(fnic->vdev);
929 err_out_release_regions:
930 pci_release_regions(pdev);
931 err_out_disable_device:
932 pci_disable_device(pdev);
934 fnic_stats_debugfs_remove(fnic);
935 scsi_host_put(lp->host);
940 static void fnic_remove(struct pci_dev *pdev)
942 struct fnic *fnic = pci_get_drvdata(pdev);
943 struct fc_lport *lp = fnic->lport;
947 * Mark state so that the workqueue thread stops forwarding
948 * received frames and link events to the local port. ISR and
949 * other threads that can queue work items will also stop
950 * creating work items on the fnic workqueue
952 spin_lock_irqsave(&fnic->fnic_lock, flags);
953 fnic->stop_rx_link_events = 1;
954 spin_unlock_irqrestore(&fnic->fnic_lock, flags);
956 if (vnic_dev_get_intr_mode(fnic->vdev) == VNIC_DEV_INTR_MODE_MSI)
957 del_timer_sync(&fnic->notify_timer);
960 * Flush the fnic event queue. After this call, there should
961 * be no event queued for this fnic device in the workqueue
963 flush_workqueue(fnic_event_queue);
964 skb_queue_purge(&fnic->frame_queue);
965 skb_queue_purge(&fnic->tx_queue);
967 if (fnic->config.flags & VFCF_FIP_CAPABLE) {
968 del_timer_sync(&fnic->fip_timer);
969 skb_queue_purge(&fnic->fip_frame_queue);
970 fnic_fcoe_reset_vlans(fnic);
971 fnic_fcoe_evlist_free(fnic);
975 * Log off the fabric. This stops all remote ports, dns port,
976 * logs off the fabric. This flushes all rport, disc, lport work
979 fc_fabric_logoff(fnic->lport);
981 spin_lock_irqsave(&fnic->fnic_lock, flags);
983 spin_unlock_irqrestore(&fnic->fnic_lock, flags);
985 fcoe_ctlr_destroy(&fnic->ctlr);
986 fc_lport_destroy(lp);
987 fnic_stats_debugfs_remove(fnic);
990 * This stops the fnic device, masks all interrupts. Completed
991 * CQ entries are drained. Posted WQ/RQ/Copy-WQ entries are
996 BUG_ON(!skb_queue_empty(&fnic->frame_queue));
997 BUG_ON(!skb_queue_empty(&fnic->tx_queue));
999 spin_lock_irqsave(&fnic_list_lock, flags);
1000 list_del(&fnic->list);
1001 spin_unlock_irqrestore(&fnic_list_lock, flags);
1003 fc_remove_host(fnic->lport->host);
1004 scsi_remove_host(fnic->lport->host);
1005 fc_exch_mgr_free(fnic->lport);
1006 vnic_dev_notify_unset(fnic->vdev);
1007 fnic_free_intr(fnic);
1008 fnic_free_vnic_resources(fnic);
1009 fnic_clear_intr_mode(fnic);
1010 vnic_dev_close(fnic->vdev);
1011 vnic_dev_unregister(fnic->vdev);
1013 pci_release_regions(pdev);
1014 pci_disable_device(pdev);
1015 scsi_host_put(lp->host);
1018 static struct pci_driver fnic_driver = {
1020 .id_table = fnic_id_table,
1021 .probe = fnic_probe,
1022 .remove = fnic_remove,
1025 static int __init fnic_init_module(void)
1030 printk(KERN_INFO PFX "%s, ver %s\n", DRV_DESCRIPTION, DRV_VERSION);
1032 /* Create debugfs entries for fnic */
1033 err = fnic_debugfs_init();
1035 printk(KERN_ERR PFX "Failed to create fnic directory "
1036 "for tracing and stats logging\n");
1037 fnic_debugfs_terminate();
1040 /* Allocate memory for trace buffer */
1041 err = fnic_trace_buf_init();
1044 "Trace buffer initialization Failed. "
1045 "Fnic Tracing utility is disabled\n");
1049 /* Allocate memory for fc trace buffer */
1050 err = fnic_fc_trace_init();
1052 printk(KERN_ERR PFX "FC trace buffer initialization Failed "
1053 "FC frame tracing utility is disabled\n");
1054 fnic_fc_trace_free();
1057 /* Create a cache for allocation of default size sgls */
1058 len = sizeof(struct fnic_dflt_sgl_list);
1059 fnic_sgl_cache[FNIC_SGL_CACHE_DFLT] = kmem_cache_create
1060 ("fnic_sgl_dflt", len + FNIC_SG_DESC_ALIGN, FNIC_SG_DESC_ALIGN,
1063 if (!fnic_sgl_cache[FNIC_SGL_CACHE_DFLT]) {
1064 printk(KERN_ERR PFX "failed to create fnic dflt sgl slab\n");
1066 goto err_create_fnic_sgl_slab_dflt;
1069 /* Create a cache for allocation of max size sgls*/
1070 len = sizeof(struct fnic_sgl_list);
1071 fnic_sgl_cache[FNIC_SGL_CACHE_MAX] = kmem_cache_create
1072 ("fnic_sgl_max", len + FNIC_SG_DESC_ALIGN, FNIC_SG_DESC_ALIGN,
1075 if (!fnic_sgl_cache[FNIC_SGL_CACHE_MAX]) {
1076 printk(KERN_ERR PFX "failed to create fnic max sgl slab\n");
1078 goto err_create_fnic_sgl_slab_max;
1081 /* Create a cache of io_req structs for use via mempool */
1082 fnic_io_req_cache = kmem_cache_create("fnic_io_req",
1083 sizeof(struct fnic_io_req),
1084 0, SLAB_HWCACHE_ALIGN, NULL);
1085 if (!fnic_io_req_cache) {
1086 printk(KERN_ERR PFX "failed to create fnic io_req slab\n");
1088 goto err_create_fnic_ioreq_slab;
1091 fnic_event_queue = create_singlethread_workqueue("fnic_event_wq");
1092 if (!fnic_event_queue) {
1093 printk(KERN_ERR PFX "fnic work queue create failed\n");
1095 goto err_create_fnic_workq;
1098 spin_lock_init(&fnic_list_lock);
1099 INIT_LIST_HEAD(&fnic_list);
1101 fnic_fip_queue = create_singlethread_workqueue("fnic_fip_q");
1102 if (!fnic_fip_queue) {
1103 printk(KERN_ERR PFX "fnic FIP work queue create failed\n");
1105 goto err_create_fip_workq;
1108 fnic_fc_transport = fc_attach_transport(&fnic_fc_functions);
1109 if (!fnic_fc_transport) {
1110 printk(KERN_ERR PFX "fc_attach_transport error\n");
1112 goto err_fc_transport;
1115 /* register the driver with PCI system */
1116 err = pci_register_driver(&fnic_driver);
1118 printk(KERN_ERR PFX "pci register error\n");
1119 goto err_pci_register;
1124 fc_release_transport(fnic_fc_transport);
1126 destroy_workqueue(fnic_fip_queue);
1127 err_create_fip_workq:
1128 destroy_workqueue(fnic_event_queue);
1129 err_create_fnic_workq:
1130 kmem_cache_destroy(fnic_io_req_cache);
1131 err_create_fnic_ioreq_slab:
1132 kmem_cache_destroy(fnic_sgl_cache[FNIC_SGL_CACHE_MAX]);
1133 err_create_fnic_sgl_slab_max:
1134 kmem_cache_destroy(fnic_sgl_cache[FNIC_SGL_CACHE_DFLT]);
1135 err_create_fnic_sgl_slab_dflt:
1137 fnic_fc_trace_free();
1138 fnic_debugfs_terminate();
1142 static void __exit fnic_cleanup_module(void)
1144 pci_unregister_driver(&fnic_driver);
1145 destroy_workqueue(fnic_event_queue);
1146 if (fnic_fip_queue) {
1147 flush_workqueue(fnic_fip_queue);
1148 destroy_workqueue(fnic_fip_queue);
1150 kmem_cache_destroy(fnic_sgl_cache[FNIC_SGL_CACHE_MAX]);
1151 kmem_cache_destroy(fnic_sgl_cache[FNIC_SGL_CACHE_DFLT]);
1152 kmem_cache_destroy(fnic_io_req_cache);
1153 fc_release_transport(fnic_fc_transport);
1155 fnic_fc_trace_free();
1156 fnic_debugfs_terminate();
1159 module_init(fnic_init_module);
1160 module_exit(fnic_cleanup_module);