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"
44 #define PCI_DEVICE_ID_CISCO_FNIC 0x0045
46 /* Timer to poll notification area for events. Used for MSI interrupts */
47 #define FNIC_NOTIFY_TIMER_PERIOD (2 * HZ)
49 static struct kmem_cache *fnic_sgl_cache[FNIC_SGL_NUM_CACHES];
50 static struct kmem_cache *fnic_io_req_cache;
52 DEFINE_SPINLOCK(fnic_list_lock);
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) },
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);
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");
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
80 static int fnic_slave_alloc(struct scsi_device *sdev)
82 struct fc_rport *rport = starget_to_rport(scsi_target(sdev));
84 sdev->tagged_supported = 1;
86 if (!rport || fc_remote_port_chkready(rport))
89 scsi_activate_tcq(sdev, FNIC_DFLT_QUEUE_DEPTH);
93 static struct scsi_host_template fnic_host_template = {
94 .module = THIS_MODULE,
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,
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,
113 fnic_set_rport_dev_loss_tmo(struct fc_rport *rport, u32 timeout)
116 rport->dev_loss_tmo = timeout;
118 rport->dev_loss_tmo = 1;
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 *);
125 static struct fc_function_template fnic_fc_functions = {
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,
156 static void fnic_get_host_speed(struct Scsi_Host *shost)
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);
162 /* Add in other values as they get defined in fw */
163 switch (port_speed) {
165 fc_host_speed(shost) = FC_PORTSPEED_10GBIT;
168 fc_host_speed(shost) = FC_PORTSPEED_10GBIT;
173 static struct fc_host_statistics *fnic_get_stats(struct Scsi_Host *host)
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;
182 if (time_before(jiffies, fnic->stats_time + HZ / FNIC_STATS_RATE_LIMIT))
184 fnic->stats_time = jiffies;
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);
191 FNIC_MAIN_DBG(KERN_DEBUG, fnic->lport->host,
192 "fnic: Get vnic stats failed"
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);
211 void fnic_log_q_error(struct fnic *fnic)
216 for (i = 0; i < fnic->raw_wq_count; i++) {
217 error_status = ioread32(&fnic->wq[i].ctrl->error_status);
219 shost_printk(KERN_ERR, fnic->lport->host,
220 "WQ[%d] error_status"
221 " %d\n", i, error_status);
224 for (i = 0; i < fnic->rq_count; i++) {
225 error_status = ioread32(&fnic->rq[i].ctrl->error_status);
227 shost_printk(KERN_ERR, fnic->lport->host,
228 "RQ[%d] error_status"
229 " %d\n", i, error_status);
232 for (i = 0; i < fnic->wq_copy_count; i++) {
233 error_status = ioread32(&fnic->wq_copy[i].ctrl->error_status);
235 shost_printk(KERN_ERR, fnic->lport->host,
236 "CWQ[%d] error_status"
237 " %d\n", i, error_status);
241 void fnic_handle_link_event(struct fnic *fnic)
245 spin_lock_irqsave(&fnic->fnic_lock, flags);
246 if (fnic->stop_rx_link_events) {
247 spin_unlock_irqrestore(&fnic->fnic_lock, flags);
250 spin_unlock_irqrestore(&fnic->fnic_lock, flags);
252 queue_work(fnic_event_queue, &fnic->link_work);
256 static int fnic_notify_set(struct fnic *fnic)
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);
264 case VNIC_DEV_INTR_MODE_MSI:
265 err = vnic_dev_notify_set(fnic->vdev, -1);
267 case VNIC_DEV_INTR_MODE_MSIX:
268 err = vnic_dev_notify_set(fnic->vdev, FNIC_MSIX_ERR_NOTIFY);
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));
282 static void fnic_notify_timer(unsigned long data)
284 struct fnic *fnic = (struct fnic *)data;
286 fnic_handle_link_event(fnic);
287 mod_timer(&fnic->notify_timer,
288 round_jiffies(jiffies + FNIC_NOTIFY_TIMER_PERIOD));
291 static void fnic_notify_timer_start(struct fnic *fnic)
293 switch (vnic_dev_get_intr_mode(fnic->vdev)) {
294 case VNIC_DEV_INTR_MODE_MSI:
296 * Schedule first timeout immediately. The driver is
297 * initiatialized and ready to look for link up notification
299 mod_timer(&fnic->notify_timer, jiffies);
302 /* Using intr for notification for INTx/MSI-X */
307 static int fnic_dev_wait(struct vnic_dev *vdev,
308 int (*start)(struct vnic_dev *, int),
309 int (*finished)(struct vnic_dev *, int *),
316 err = start(vdev, arg);
320 /* Wait for func to complete...2 seconds max */
321 time = jiffies + (HZ * 2);
323 err = finished(vdev, &done);
328 schedule_timeout_uninterruptible(HZ / 10);
329 } while (time_after(time, jiffies));
334 static int fnic_cleanup(struct fnic *fnic)
339 vnic_dev_disable(fnic->vdev);
340 for (i = 0; i < fnic->intr_count; i++)
341 vnic_intr_mask(&fnic->intr[i]);
343 for (i = 0; i < fnic->rq_count; i++) {
344 err = vnic_rq_disable(&fnic->rq[i]);
348 for (i = 0; i < fnic->raw_wq_count; i++) {
349 err = vnic_wq_disable(&fnic->wq[i]);
353 for (i = 0; i < fnic->wq_copy_count; i++) {
354 err = vnic_wq_copy_disable(&fnic->wq_copy[i]);
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);
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);
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]);
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]);
385 static void fnic_iounmap(struct fnic *fnic)
387 if (fnic->bar0.vaddr)
388 iounmap(fnic->bar0.vaddr);
392 * fnic_get_mac() - get assigned data MAC address for FIP code.
393 * @lport: local port.
395 static u8 *fnic_get_mac(struct fc_lport *lport)
397 struct fnic *fnic = lport_priv(lport);
399 return fnic->data_src_addr;
402 static int fnic_probe(struct pci_dev *pdev, const struct pci_device_id *ent)
404 struct Scsi_Host *host;
413 * Allocate SCSI Host and set up association between host,
414 * local port, and fnic
416 lp = libfc_host_alloc(&fnic_host_template, sizeof(struct fnic));
418 printk(KERN_ERR PFX "Unable to alloc libfc local port\n");
423 fnic = lport_priv(lp);
427 snprintf(fnic->name, sizeof(fnic->name) - 1, "%s%d", DRV_NAME,
430 host->transportt = fnic_fc_transport;
432 err = scsi_init_shared_tag_map(host, FNIC_MAX_IO_REQ);
434 shost_printk(KERN_ERR, fnic->lport->host,
435 "Unable to alloc shared tag map\n");
436 goto err_out_free_hba;
439 /* Setup PCI resources */
440 pci_set_drvdata(pdev, fnic);
444 err = pci_enable_device(pdev);
446 shost_printk(KERN_ERR, fnic->lport->host,
447 "Cannot enable PCI device, aborting.\n");
448 goto err_out_free_hba;
451 err = pci_request_regions(pdev, DRV_NAME);
453 shost_printk(KERN_ERR, fnic->lport->host,
454 "Cannot enable PCI resources, aborting\n");
455 goto err_out_disable_device;
458 pci_set_master(pdev);
460 /* Query PCI controller on system for DMA addressing
461 * limitation for the device. Try 40-bit first, and
464 err = pci_set_dma_mask(pdev, DMA_BIT_MASK(40));
466 err = pci_set_dma_mask(pdev, DMA_BIT_MASK(32));
468 shost_printk(KERN_ERR, fnic->lport->host,
469 "No usable DMA configuration "
471 goto err_out_release_regions;
473 err = pci_set_consistent_dma_mask(pdev, DMA_BIT_MASK(32));
475 shost_printk(KERN_ERR, fnic->lport->host,
476 "Unable to obtain 32-bit DMA "
477 "for consistent allocations, aborting.\n");
478 goto err_out_release_regions;
481 err = pci_set_consistent_dma_mask(pdev, DMA_BIT_MASK(40));
483 shost_printk(KERN_ERR, fnic->lport->host,
484 "Unable to obtain 40-bit DMA "
485 "for consistent allocations, aborting.\n");
486 goto err_out_release_regions;
490 /* Map vNIC resources from BAR0 */
491 if (!(pci_resource_flags(pdev, 0) & IORESOURCE_MEM)) {
492 shost_printk(KERN_ERR, fnic->lport->host,
493 "BAR0 not memory-map'able, aborting.\n");
495 goto err_out_release_regions;
498 fnic->bar0.vaddr = pci_iomap(pdev, 0, 0);
499 fnic->bar0.bus_addr = pci_resource_start(pdev, 0);
500 fnic->bar0.len = pci_resource_len(pdev, 0);
502 if (!fnic->bar0.vaddr) {
503 shost_printk(KERN_ERR, fnic->lport->host,
504 "Cannot memory-map BAR0 res hdr, "
507 goto err_out_release_regions;
510 fnic->vdev = vnic_dev_register(NULL, fnic, pdev, &fnic->bar0);
512 shost_printk(KERN_ERR, fnic->lport->host,
513 "vNIC registration failed, "
516 goto err_out_iounmap;
519 err = fnic_dev_wait(fnic->vdev, vnic_dev_open,
520 vnic_dev_open_done, 0);
522 shost_printk(KERN_ERR, fnic->lport->host,
523 "vNIC dev open failed, aborting.\n");
524 goto err_out_vnic_unregister;
527 err = vnic_dev_init(fnic->vdev, 0);
529 shost_printk(KERN_ERR, fnic->lport->host,
530 "vNIC dev init failed, aborting.\n");
531 goto err_out_dev_close;
534 err = vnic_dev_mac_addr(fnic->vdev, fnic->ctlr.ctl_src_addr);
536 shost_printk(KERN_ERR, fnic->lport->host,
537 "vNIC get MAC addr failed \n");
538 goto err_out_dev_close;
540 /* set data_src for point-to-point mode and to keep it non-zero */
541 memcpy(fnic->data_src_addr, fnic->ctlr.ctl_src_addr, ETH_ALEN);
543 /* Get vNIC configuration */
544 err = fnic_get_vnic_config(fnic);
546 shost_printk(KERN_ERR, fnic->lport->host,
547 "Get vNIC configuration failed, "
549 goto err_out_dev_close;
551 host->max_lun = fnic->config.luns_per_tgt;
552 host->max_id = FNIC_MAX_FCP_TARGET;
553 host->max_cmd_len = FCOE_MAX_CMD_LEN;
555 fnic_get_res_counts(fnic);
557 err = fnic_set_intr_mode(fnic);
559 shost_printk(KERN_ERR, fnic->lport->host,
560 "Failed to set intr mode, "
562 goto err_out_dev_close;
565 err = fnic_alloc_vnic_resources(fnic);
567 shost_printk(KERN_ERR, fnic->lport->host,
568 "Failed to alloc vNIC resources, "
570 goto err_out_clear_intr;
574 /* initialize all fnic locks */
575 spin_lock_init(&fnic->fnic_lock);
577 for (i = 0; i < FNIC_WQ_MAX; i++)
578 spin_lock_init(&fnic->wq_lock[i]);
580 for (i = 0; i < FNIC_WQ_COPY_MAX; i++) {
581 spin_lock_init(&fnic->wq_copy_lock[i]);
582 fnic->wq_copy_desc_low[i] = DESC_CLEAN_LOW_WATERMARK;
583 fnic->fw_ack_recd[i] = 0;
584 fnic->fw_ack_index[i] = -1;
587 for (i = 0; i < FNIC_IO_LOCKS; i++)
588 spin_lock_init(&fnic->io_req_lock[i]);
590 fnic->io_req_pool = mempool_create_slab_pool(2, fnic_io_req_cache);
591 if (!fnic->io_req_pool)
592 goto err_out_free_resources;
594 pool = mempool_create_slab_pool(2, fnic_sgl_cache[FNIC_SGL_CACHE_DFLT]);
596 goto err_out_free_ioreq_pool;
597 fnic->io_sgl_pool[FNIC_SGL_CACHE_DFLT] = pool;
599 pool = mempool_create_slab_pool(2, fnic_sgl_cache[FNIC_SGL_CACHE_MAX]);
601 goto err_out_free_dflt_pool;
602 fnic->io_sgl_pool[FNIC_SGL_CACHE_MAX] = pool;
604 /* setup vlan config, hw inserts vlan header */
605 fnic->vlan_hw_insert = 1;
608 /* Initialize the FIP fcoe_ctrl struct */
609 fnic->ctlr.send = fnic_eth_send;
610 fnic->ctlr.update_mac = fnic_update_mac;
611 fnic->ctlr.get_src_addr = fnic_get_mac;
612 if (fnic->config.flags & VFCF_FIP_CAPABLE) {
613 shost_printk(KERN_INFO, fnic->lport->host,
614 "firmware supports FIP\n");
615 /* enable directed and multicast */
616 vnic_dev_packet_filter(fnic->vdev, 1, 1, 0, 0, 0);
617 vnic_dev_add_addr(fnic->vdev, FIP_ALL_ENODE_MACS);
618 vnic_dev_add_addr(fnic->vdev, fnic->ctlr.ctl_src_addr);
619 fcoe_ctlr_init(&fnic->ctlr, FIP_MODE_AUTO);
621 shost_printk(KERN_INFO, fnic->lport->host,
622 "firmware uses non-FIP mode\n");
623 fcoe_ctlr_init(&fnic->ctlr, FIP_MODE_NON_FIP);
625 fnic->state = FNIC_IN_FC_MODE;
627 /* Enable hardware stripping of vlan header on ingress */
628 fnic_set_nic_config(fnic, 0, 0, 0, 0, 0, 0, 1);
630 /* Setup notification buffer area */
631 err = fnic_notify_set(fnic);
633 shost_printk(KERN_ERR, fnic->lport->host,
634 "Failed to alloc notify buffer, aborting.\n");
635 goto err_out_free_max_pool;
638 /* Setup notify timer when using MSI interrupts */
639 if (vnic_dev_get_intr_mode(fnic->vdev) == VNIC_DEV_INTR_MODE_MSI)
640 setup_timer(&fnic->notify_timer,
641 fnic_notify_timer, (unsigned long)fnic);
643 /* allocate RQ buffers and post them to RQ*/
644 for (i = 0; i < fnic->rq_count; i++) {
645 err = vnic_rq_fill(&fnic->rq[i], fnic_alloc_rq_frame);
647 shost_printk(KERN_ERR, fnic->lport->host,
648 "fnic_alloc_rq_frame can't alloc "
650 goto err_out_free_rq_buf;
655 * Initialization done with PCI system, hardware, firmware.
658 err = scsi_add_host(lp->host, &pdev->dev);
660 shost_printk(KERN_ERR, fnic->lport->host,
661 "fnic: scsi_add_host failed...exiting\n");
662 goto err_out_free_rq_buf;
665 /* Start local port initiatialization */
669 lp->max_retry_count = fnic->config.flogi_retries;
670 lp->max_rport_retry_count = fnic->config.plogi_retries;
671 lp->service_params = (FCP_SPPF_INIT_FCN | FCP_SPPF_RD_XRDY_DIS |
672 FCP_SPPF_CONF_COMPL);
673 if (fnic->config.flags & VFCF_FCP_SEQ_LVL_ERR)
674 lp->service_params |= FCP_SPPF_RETRY;
676 lp->boot_time = jiffies;
677 lp->e_d_tov = fnic->config.ed_tov;
678 lp->r_a_tov = fnic->config.ra_tov;
679 lp->link_supported_speeds = FC_PORTSPEED_10GBIT;
680 fc_set_wwnn(lp, fnic->config.node_wwn);
681 fc_set_wwpn(lp, fnic->config.port_wwn);
683 fcoe_libfc_config(lp, &fnic->ctlr, &fnic_transport_template, 0);
685 if (!fc_exch_mgr_alloc(lp, FC_CLASS_3, FCPIO_HOST_EXCH_RANGE_START,
686 FCPIO_HOST_EXCH_RANGE_END, NULL)) {
688 goto err_out_remove_scsi_host;
691 fc_lport_init_stats(lp);
695 if (fc_set_mfs(lp, fnic->config.maxdatafieldsize +
696 sizeof(struct fc_frame_header))) {
698 goto err_out_free_exch_mgr;
700 fc_host_maxframe_size(lp->host) = lp->mfs;
701 fc_host_dev_loss_tmo(lp->host) = fnic->config.port_down_timeout / 1000;
703 sprintf(fc_host_symbolic_name(lp->host),
704 DRV_NAME " v" DRV_VERSION " over %s", fnic->name);
706 spin_lock_irqsave(&fnic_list_lock, flags);
707 list_add_tail(&fnic->list, &fnic_list);
708 spin_unlock_irqrestore(&fnic_list_lock, flags);
710 INIT_WORK(&fnic->link_work, fnic_handle_link);
711 INIT_WORK(&fnic->frame_work, fnic_handle_frame);
712 skb_queue_head_init(&fnic->frame_queue);
713 skb_queue_head_init(&fnic->tx_queue);
715 /* Enable all queues */
716 for (i = 0; i < fnic->raw_wq_count; i++)
717 vnic_wq_enable(&fnic->wq[i]);
718 for (i = 0; i < fnic->rq_count; i++)
719 vnic_rq_enable(&fnic->rq[i]);
720 for (i = 0; i < fnic->wq_copy_count; i++)
721 vnic_wq_copy_enable(&fnic->wq_copy[i]);
725 vnic_dev_enable(fnic->vdev);
727 err = fnic_request_intr(fnic);
729 shost_printk(KERN_ERR, fnic->lport->host,
730 "Unable to request irq.\n");
731 goto err_out_free_exch_mgr;
734 for (i = 0; i < fnic->intr_count; i++)
735 vnic_intr_unmask(&fnic->intr[i]);
737 fnic_notify_timer_start(fnic);
741 err_out_free_exch_mgr:
742 fc_exch_mgr_free(lp);
743 err_out_remove_scsi_host:
744 fc_remove_host(lp->host);
745 scsi_remove_host(lp->host);
747 for (i = 0; i < fnic->rq_count; i++)
748 vnic_rq_clean(&fnic->rq[i], fnic_free_rq_buf);
749 vnic_dev_notify_unset(fnic->vdev);
750 err_out_free_max_pool:
751 mempool_destroy(fnic->io_sgl_pool[FNIC_SGL_CACHE_MAX]);
752 err_out_free_dflt_pool:
753 mempool_destroy(fnic->io_sgl_pool[FNIC_SGL_CACHE_DFLT]);
754 err_out_free_ioreq_pool:
755 mempool_destroy(fnic->io_req_pool);
756 err_out_free_resources:
757 fnic_free_vnic_resources(fnic);
759 fnic_clear_intr_mode(fnic);
761 vnic_dev_close(fnic->vdev);
762 err_out_vnic_unregister:
763 vnic_dev_unregister(fnic->vdev);
766 err_out_release_regions:
767 pci_release_regions(pdev);
768 err_out_disable_device:
769 pci_disable_device(pdev);
771 scsi_host_put(lp->host);
776 static void fnic_remove(struct pci_dev *pdev)
778 struct fnic *fnic = pci_get_drvdata(pdev);
779 struct fc_lport *lp = fnic->lport;
783 * Mark state so that the workqueue thread stops forwarding
784 * received frames and link events to the local port. ISR and
785 * other threads that can queue work items will also stop
786 * creating work items on the fnic workqueue
788 spin_lock_irqsave(&fnic->fnic_lock, flags);
789 fnic->stop_rx_link_events = 1;
790 spin_unlock_irqrestore(&fnic->fnic_lock, flags);
792 if (vnic_dev_get_intr_mode(fnic->vdev) == VNIC_DEV_INTR_MODE_MSI)
793 del_timer_sync(&fnic->notify_timer);
796 * Flush the fnic event queue. After this call, there should
797 * be no event queued for this fnic device in the workqueue
799 flush_workqueue(fnic_event_queue);
800 skb_queue_purge(&fnic->frame_queue);
801 skb_queue_purge(&fnic->tx_queue);
804 * Log off the fabric. This stops all remote ports, dns port,
805 * logs off the fabric. This flushes all rport, disc, lport work
808 fc_fabric_logoff(fnic->lport);
810 spin_lock_irqsave(&fnic->fnic_lock, flags);
812 spin_unlock_irqrestore(&fnic->fnic_lock, flags);
814 fcoe_ctlr_destroy(&fnic->ctlr);
815 fc_lport_destroy(lp);
818 * This stops the fnic device, masks all interrupts. Completed
819 * CQ entries are drained. Posted WQ/RQ/Copy-WQ entries are
824 BUG_ON(!skb_queue_empty(&fnic->frame_queue));
825 BUG_ON(!skb_queue_empty(&fnic->tx_queue));
827 spin_lock_irqsave(&fnic_list_lock, flags);
828 list_del(&fnic->list);
829 spin_unlock_irqrestore(&fnic_list_lock, flags);
831 fc_remove_host(fnic->lport->host);
832 scsi_remove_host(fnic->lport->host);
833 fc_exch_mgr_free(fnic->lport);
834 vnic_dev_notify_unset(fnic->vdev);
835 fnic_free_intr(fnic);
836 fnic_free_vnic_resources(fnic);
837 fnic_clear_intr_mode(fnic);
838 vnic_dev_close(fnic->vdev);
839 vnic_dev_unregister(fnic->vdev);
841 pci_release_regions(pdev);
842 pci_disable_device(pdev);
843 pci_set_drvdata(pdev, NULL);
844 scsi_host_put(lp->host);
847 static struct pci_driver fnic_driver = {
849 .id_table = fnic_id_table,
851 .remove = fnic_remove,
854 static int __init fnic_init_module(void)
859 printk(KERN_INFO PFX "%s, ver %s\n", DRV_DESCRIPTION, DRV_VERSION);
861 /* Create a cache for allocation of default size sgls */
862 len = sizeof(struct fnic_dflt_sgl_list);
863 fnic_sgl_cache[FNIC_SGL_CACHE_DFLT] = kmem_cache_create
864 ("fnic_sgl_dflt", len + FNIC_SG_DESC_ALIGN, FNIC_SG_DESC_ALIGN,
867 if (!fnic_sgl_cache[FNIC_SGL_CACHE_DFLT]) {
868 printk(KERN_ERR PFX "failed to create fnic dflt sgl slab\n");
870 goto err_create_fnic_sgl_slab_dflt;
873 /* Create a cache for allocation of max size sgls*/
874 len = sizeof(struct fnic_sgl_list);
875 fnic_sgl_cache[FNIC_SGL_CACHE_MAX] = kmem_cache_create
876 ("fnic_sgl_max", len + FNIC_SG_DESC_ALIGN, FNIC_SG_DESC_ALIGN,
879 if (!fnic_sgl_cache[FNIC_SGL_CACHE_MAX]) {
880 printk(KERN_ERR PFX "failed to create fnic max sgl slab\n");
882 goto err_create_fnic_sgl_slab_max;
885 /* Create a cache of io_req structs for use via mempool */
886 fnic_io_req_cache = kmem_cache_create("fnic_io_req",
887 sizeof(struct fnic_io_req),
888 0, SLAB_HWCACHE_ALIGN, NULL);
889 if (!fnic_io_req_cache) {
890 printk(KERN_ERR PFX "failed to create fnic io_req slab\n");
892 goto err_create_fnic_ioreq_slab;
895 fnic_event_queue = create_singlethread_workqueue("fnic_event_wq");
896 if (!fnic_event_queue) {
897 printk(KERN_ERR PFX "fnic work queue create failed\n");
899 goto err_create_fnic_workq;
902 spin_lock_init(&fnic_list_lock);
903 INIT_LIST_HEAD(&fnic_list);
905 fnic_fc_transport = fc_attach_transport(&fnic_fc_functions);
906 if (!fnic_fc_transport) {
907 printk(KERN_ERR PFX "fc_attach_transport error\n");
909 goto err_fc_transport;
912 /* register the driver with PCI system */
913 err = pci_register_driver(&fnic_driver);
915 printk(KERN_ERR PFX "pci register error\n");
916 goto err_pci_register;
921 fc_release_transport(fnic_fc_transport);
923 destroy_workqueue(fnic_event_queue);
924 err_create_fnic_workq:
925 kmem_cache_destroy(fnic_io_req_cache);
926 err_create_fnic_ioreq_slab:
927 kmem_cache_destroy(fnic_sgl_cache[FNIC_SGL_CACHE_MAX]);
928 err_create_fnic_sgl_slab_max:
929 kmem_cache_destroy(fnic_sgl_cache[FNIC_SGL_CACHE_DFLT]);
930 err_create_fnic_sgl_slab_dflt:
934 static void __exit fnic_cleanup_module(void)
936 pci_unregister_driver(&fnic_driver);
937 destroy_workqueue(fnic_event_queue);
938 kmem_cache_destroy(fnic_sgl_cache[FNIC_SGL_CACHE_MAX]);
939 kmem_cache_destroy(fnic_sgl_cache[FNIC_SGL_CACHE_DFLT]);
940 kmem_cache_destroy(fnic_io_req_cache);
941 fc_release_transport(fnic_fc_transport);
944 module_init(fnic_init_module);
945 module_exit(fnic_cleanup_module);