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/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 <linux/if_ether.h>
29 #include <scsi/fc/fc_fip.h>
30 #include <scsi/scsi_host.h>
31 #include <scsi/scsi_transport.h>
32 #include <scsi/scsi_transport_fc.h>
33 #include <scsi/scsi_tcq.h>
34 #include <scsi/libfc.h>
35 #include <scsi/fc_frame.h>
38 #include "vnic_intr.h"
39 #include "vnic_stats.h"
43 #define PCI_DEVICE_ID_CISCO_FNIC 0x0045
45 /* Timer to poll notification area for events. Used for MSI interrupts */
46 #define FNIC_NOTIFY_TIMER_PERIOD (2 * HZ)
48 static struct kmem_cache *fnic_sgl_cache[FNIC_SGL_NUM_CACHES];
49 static struct kmem_cache *fnic_io_req_cache;
51 DEFINE_SPINLOCK(fnic_list_lock);
53 /* Supported devices by fnic module */
54 static struct pci_device_id fnic_id_table[] = {
55 { PCI_DEVICE(PCI_VENDOR_ID_CISCO, PCI_DEVICE_ID_CISCO_FNIC) },
59 MODULE_DESCRIPTION(DRV_DESCRIPTION);
60 MODULE_AUTHOR("Abhijeet Joglekar <abjoglek@cisco.com>, "
61 "Joseph R. Eykholt <jeykholt@cisco.com>");
62 MODULE_LICENSE("GPL v2");
63 MODULE_VERSION(DRV_VERSION);
64 MODULE_DEVICE_TABLE(pci, fnic_id_table);
66 unsigned int fnic_log_level;
67 module_param(fnic_log_level, int, S_IRUGO|S_IWUSR);
68 MODULE_PARM_DESC(fnic_log_level, "bit mask of fnic logging levels");
71 static struct libfc_function_template fnic_transport_template = {
72 .frame_send = fnic_send,
73 .lport_set_port_id = fnic_set_port_id,
74 .fcp_abort_io = fnic_empty_scsi_cleanup,
75 .fcp_cleanup = fnic_empty_scsi_cleanup,
76 .exch_mgr_reset = fnic_exch_mgr_reset
79 static int fnic_slave_alloc(struct scsi_device *sdev)
81 struct fc_rport *rport = starget_to_rport(scsi_target(sdev));
82 struct fc_lport *lp = shost_priv(sdev->host);
83 struct fnic *fnic = lport_priv(lp);
85 sdev->tagged_supported = 1;
87 if (!rport || fc_remote_port_chkready(rport))
90 scsi_activate_tcq(sdev, FNIC_DFLT_QUEUE_DEPTH);
91 rport->dev_loss_tmo = fnic->config.port_down_timeout / 1000;
96 static struct scsi_host_template fnic_host_template = {
97 .module = THIS_MODULE,
99 .queuecommand = fnic_queuecommand,
100 .eh_abort_handler = fnic_abort_cmd,
101 .eh_device_reset_handler = fnic_device_reset,
102 .eh_host_reset_handler = fnic_host_reset,
103 .slave_alloc = fnic_slave_alloc,
104 .change_queue_depth = fc_change_queue_depth,
105 .change_queue_type = fc_change_queue_type,
108 .can_queue = FNIC_MAX_IO_REQ,
109 .use_clustering = ENABLE_CLUSTERING,
110 .sg_tablesize = FNIC_MAX_SG_DESC_CNT,
111 .max_sectors = 0xffff,
112 .shost_attrs = fnic_attrs,
115 static void fnic_get_host_speed(struct Scsi_Host *shost);
116 static struct scsi_transport_template *fnic_fc_transport;
117 static struct fc_host_statistics *fnic_get_stats(struct Scsi_Host *);
119 static struct fc_function_template fnic_fc_functions = {
121 .show_host_node_name = 1,
122 .show_host_port_name = 1,
123 .show_host_supported_classes = 1,
124 .show_host_supported_fc4s = 1,
125 .show_host_active_fc4s = 1,
126 .show_host_maxframe_size = 1,
127 .show_host_port_id = 1,
128 .show_host_supported_speeds = 1,
129 .get_host_speed = fnic_get_host_speed,
130 .show_host_speed = 1,
131 .show_host_port_type = 1,
132 .get_host_port_state = fc_get_host_port_state,
133 .show_host_port_state = 1,
134 .show_host_symbolic_name = 1,
135 .show_rport_maxframe_size = 1,
136 .show_rport_supported_classes = 1,
137 .show_host_fabric_name = 1,
138 .show_starget_node_name = 1,
139 .show_starget_port_name = 1,
140 .show_starget_port_id = 1,
141 .show_rport_dev_loss_tmo = 1,
142 .issue_fc_host_lip = fnic_reset,
143 .get_fc_host_stats = fnic_get_stats,
144 .dd_fcrport_size = sizeof(struct fc_rport_libfc_priv),
145 .terminate_rport_io = fnic_terminate_rport_io,
146 .bsg_request = fc_lport_bsg_request,
149 static void fnic_get_host_speed(struct Scsi_Host *shost)
151 struct fc_lport *lp = shost_priv(shost);
152 struct fnic *fnic = lport_priv(lp);
153 u32 port_speed = vnic_dev_port_speed(fnic->vdev);
155 /* Add in other values as they get defined in fw */
156 switch (port_speed) {
158 fc_host_speed(shost) = FC_PORTSPEED_10GBIT;
161 fc_host_speed(shost) = FC_PORTSPEED_10GBIT;
166 static struct fc_host_statistics *fnic_get_stats(struct Scsi_Host *host)
169 struct fc_lport *lp = shost_priv(host);
170 struct fnic *fnic = lport_priv(lp);
171 struct fc_host_statistics *stats = &lp->host_stats;
172 struct vnic_stats *vs;
175 if (time_before(jiffies, fnic->stats_time + HZ / FNIC_STATS_RATE_LIMIT))
177 fnic->stats_time = jiffies;
179 spin_lock_irqsave(&fnic->fnic_lock, flags);
180 ret = vnic_dev_stats_dump(fnic->vdev, &fnic->stats);
181 spin_unlock_irqrestore(&fnic->fnic_lock, flags);
184 FNIC_MAIN_DBG(KERN_DEBUG, fnic->lport->host,
185 "fnic: Get vnic stats failed"
190 stats->tx_frames = vs->tx.tx_unicast_frames_ok;
191 stats->tx_words = vs->tx.tx_unicast_bytes_ok / 4;
192 stats->rx_frames = vs->rx.rx_unicast_frames_ok;
193 stats->rx_words = vs->rx.rx_unicast_bytes_ok / 4;
194 stats->error_frames = vs->tx.tx_errors + vs->rx.rx_errors;
195 stats->dumped_frames = vs->tx.tx_drops + vs->rx.rx_drop;
196 stats->invalid_crc_count = vs->rx.rx_crc_errors;
197 stats->seconds_since_last_reset = (jiffies - lp->boot_time) / HZ;
198 stats->fcp_input_megabytes = div_u64(fnic->fcp_input_bytes, 1000000);
199 stats->fcp_output_megabytes = div_u64(fnic->fcp_output_bytes, 1000000);
204 void fnic_log_q_error(struct fnic *fnic)
209 for (i = 0; i < fnic->raw_wq_count; i++) {
210 error_status = ioread32(&fnic->wq[i].ctrl->error_status);
212 shost_printk(KERN_ERR, fnic->lport->host,
213 "WQ[%d] error_status"
214 " %d\n", i, error_status);
217 for (i = 0; i < fnic->rq_count; i++) {
218 error_status = ioread32(&fnic->rq[i].ctrl->error_status);
220 shost_printk(KERN_ERR, fnic->lport->host,
221 "RQ[%d] error_status"
222 " %d\n", i, error_status);
225 for (i = 0; i < fnic->wq_copy_count; i++) {
226 error_status = ioread32(&fnic->wq_copy[i].ctrl->error_status);
228 shost_printk(KERN_ERR, fnic->lport->host,
229 "CWQ[%d] error_status"
230 " %d\n", i, error_status);
234 void fnic_handle_link_event(struct fnic *fnic)
238 spin_lock_irqsave(&fnic->fnic_lock, flags);
239 if (fnic->stop_rx_link_events) {
240 spin_unlock_irqrestore(&fnic->fnic_lock, flags);
243 spin_unlock_irqrestore(&fnic->fnic_lock, flags);
245 queue_work(fnic_event_queue, &fnic->link_work);
249 static int fnic_notify_set(struct fnic *fnic)
253 switch (vnic_dev_get_intr_mode(fnic->vdev)) {
254 case VNIC_DEV_INTR_MODE_INTX:
255 err = vnic_dev_notify_set(fnic->vdev, FNIC_INTX_NOTIFY);
257 case VNIC_DEV_INTR_MODE_MSI:
258 err = vnic_dev_notify_set(fnic->vdev, -1);
260 case VNIC_DEV_INTR_MODE_MSIX:
261 err = vnic_dev_notify_set(fnic->vdev, FNIC_MSIX_ERR_NOTIFY);
264 shost_printk(KERN_ERR, fnic->lport->host,
265 "Interrupt mode should be set up"
266 " before devcmd notify set %d\n",
267 vnic_dev_get_intr_mode(fnic->vdev));
275 static void fnic_notify_timer(unsigned long data)
277 struct fnic *fnic = (struct fnic *)data;
279 fnic_handle_link_event(fnic);
280 mod_timer(&fnic->notify_timer,
281 round_jiffies(jiffies + FNIC_NOTIFY_TIMER_PERIOD));
284 static void fnic_notify_timer_start(struct fnic *fnic)
286 switch (vnic_dev_get_intr_mode(fnic->vdev)) {
287 case VNIC_DEV_INTR_MODE_MSI:
289 * Schedule first timeout immediately. The driver is
290 * initiatialized and ready to look for link up notification
292 mod_timer(&fnic->notify_timer, jiffies);
295 /* Using intr for notification for INTx/MSI-X */
300 static int fnic_dev_wait(struct vnic_dev *vdev,
301 int (*start)(struct vnic_dev *, int),
302 int (*finished)(struct vnic_dev *, int *),
309 err = start(vdev, arg);
313 /* Wait for func to complete...2 seconds max */
314 time = jiffies + (HZ * 2);
316 err = finished(vdev, &done);
321 schedule_timeout_uninterruptible(HZ / 10);
322 } while (time_after(time, jiffies));
327 static int fnic_cleanup(struct fnic *fnic)
332 vnic_dev_disable(fnic->vdev);
333 for (i = 0; i < fnic->intr_count; i++)
334 vnic_intr_mask(&fnic->intr[i]);
336 for (i = 0; i < fnic->rq_count; i++) {
337 err = vnic_rq_disable(&fnic->rq[i]);
341 for (i = 0; i < fnic->raw_wq_count; i++) {
342 err = vnic_wq_disable(&fnic->wq[i]);
346 for (i = 0; i < fnic->wq_copy_count; i++) {
347 err = vnic_wq_copy_disable(&fnic->wq_copy[i]);
352 /* Clean up completed IOs and FCS frames */
353 fnic_wq_copy_cmpl_handler(fnic, -1);
354 fnic_wq_cmpl_handler(fnic, -1);
355 fnic_rq_cmpl_handler(fnic, -1);
357 /* Clean up the IOs and FCS frames that have not completed */
358 for (i = 0; i < fnic->raw_wq_count; i++)
359 vnic_wq_clean(&fnic->wq[i], fnic_free_wq_buf);
360 for (i = 0; i < fnic->rq_count; i++)
361 vnic_rq_clean(&fnic->rq[i], fnic_free_rq_buf);
362 for (i = 0; i < fnic->wq_copy_count; i++)
363 vnic_wq_copy_clean(&fnic->wq_copy[i],
364 fnic_wq_copy_cleanup_handler);
366 for (i = 0; i < fnic->cq_count; i++)
367 vnic_cq_clean(&fnic->cq[i]);
368 for (i = 0; i < fnic->intr_count; i++)
369 vnic_intr_clean(&fnic->intr[i]);
371 mempool_destroy(fnic->io_req_pool);
372 for (i = 0; i < FNIC_SGL_NUM_CACHES; i++)
373 mempool_destroy(fnic->io_sgl_pool[i]);
378 static void fnic_iounmap(struct fnic *fnic)
380 if (fnic->bar0.vaddr)
381 iounmap(fnic->bar0.vaddr);
385 * Allocate element for mempools requiring GFP_DMA flag.
386 * Otherwise, checks in kmem_flagcheck() hit BUG_ON().
388 static void *fnic_alloc_slab_dma(gfp_t gfp_mask, void *pool_data)
390 struct kmem_cache *mem = pool_data;
392 return kmem_cache_alloc(mem, gfp_mask | GFP_ATOMIC | GFP_DMA);
396 * fnic_get_mac() - get assigned data MAC address for FIP code.
397 * @lport: local port.
399 static u8 *fnic_get_mac(struct fc_lport *lport)
401 struct fnic *fnic = lport_priv(lport);
403 return fnic->data_src_addr;
406 static int __devinit fnic_probe(struct pci_dev *pdev,
407 const struct pci_device_id *ent)
409 struct Scsi_Host *host;
418 * Allocate SCSI Host and set up association between host,
419 * local port, and fnic
421 lp = libfc_host_alloc(&fnic_host_template, sizeof(struct fnic));
423 printk(KERN_ERR PFX "Unable to alloc libfc local port\n");
428 fnic = lport_priv(lp);
432 snprintf(fnic->name, sizeof(fnic->name) - 1, "%s%d", DRV_NAME,
435 host->transportt = fnic_fc_transport;
437 err = scsi_init_shared_tag_map(host, FNIC_MAX_IO_REQ);
439 shost_printk(KERN_ERR, fnic->lport->host,
440 "Unable to alloc shared tag map\n");
441 goto err_out_free_hba;
444 /* Setup PCI resources */
445 pci_set_drvdata(pdev, fnic);
449 err = pci_enable_device(pdev);
451 shost_printk(KERN_ERR, fnic->lport->host,
452 "Cannot enable PCI device, aborting.\n");
453 goto err_out_free_hba;
456 err = pci_request_regions(pdev, DRV_NAME);
458 shost_printk(KERN_ERR, fnic->lport->host,
459 "Cannot enable PCI resources, aborting\n");
460 goto err_out_disable_device;
463 pci_set_master(pdev);
465 /* Query PCI controller on system for DMA addressing
466 * limitation for the device. Try 40-bit first, and
469 err = pci_set_dma_mask(pdev, DMA_BIT_MASK(40));
471 err = pci_set_dma_mask(pdev, DMA_BIT_MASK(32));
473 shost_printk(KERN_ERR, fnic->lport->host,
474 "No usable DMA configuration "
476 goto err_out_release_regions;
478 err = pci_set_consistent_dma_mask(pdev, DMA_BIT_MASK(32));
480 shost_printk(KERN_ERR, fnic->lport->host,
481 "Unable to obtain 32-bit DMA "
482 "for consistent allocations, aborting.\n");
483 goto err_out_release_regions;
486 err = pci_set_consistent_dma_mask(pdev, DMA_BIT_MASK(40));
488 shost_printk(KERN_ERR, fnic->lport->host,
489 "Unable to obtain 40-bit DMA "
490 "for consistent allocations, aborting.\n");
491 goto err_out_release_regions;
495 /* Map vNIC resources from BAR0 */
496 if (!(pci_resource_flags(pdev, 0) & IORESOURCE_MEM)) {
497 shost_printk(KERN_ERR, fnic->lport->host,
498 "BAR0 not memory-map'able, aborting.\n");
500 goto err_out_release_regions;
503 fnic->bar0.vaddr = pci_iomap(pdev, 0, 0);
504 fnic->bar0.bus_addr = pci_resource_start(pdev, 0);
505 fnic->bar0.len = pci_resource_len(pdev, 0);
507 if (!fnic->bar0.vaddr) {
508 shost_printk(KERN_ERR, fnic->lport->host,
509 "Cannot memory-map BAR0 res hdr, "
512 goto err_out_release_regions;
515 fnic->vdev = vnic_dev_register(NULL, fnic, pdev, &fnic->bar0);
517 shost_printk(KERN_ERR, fnic->lport->host,
518 "vNIC registration failed, "
521 goto err_out_iounmap;
524 err = fnic_dev_wait(fnic->vdev, vnic_dev_open,
525 vnic_dev_open_done, 0);
527 shost_printk(KERN_ERR, fnic->lport->host,
528 "vNIC dev open failed, aborting.\n");
529 goto err_out_vnic_unregister;
532 err = vnic_dev_init(fnic->vdev, 0);
534 shost_printk(KERN_ERR, fnic->lport->host,
535 "vNIC dev init failed, aborting.\n");
536 goto err_out_dev_close;
539 err = vnic_dev_mac_addr(fnic->vdev, fnic->ctlr.ctl_src_addr);
541 shost_printk(KERN_ERR, fnic->lport->host,
542 "vNIC get MAC addr failed \n");
543 goto err_out_dev_close;
545 /* set data_src for point-to-point mode and to keep it non-zero */
546 memcpy(fnic->data_src_addr, fnic->ctlr.ctl_src_addr, ETH_ALEN);
548 /* Get vNIC configuration */
549 err = fnic_get_vnic_config(fnic);
551 shost_printk(KERN_ERR, fnic->lport->host,
552 "Get vNIC configuration failed, "
554 goto err_out_dev_close;
556 host->max_lun = fnic->config.luns_per_tgt;
557 host->max_id = FNIC_MAX_FCP_TARGET;
558 host->max_cmd_len = FNIC_MAX_CMD_LEN;
560 fnic_get_res_counts(fnic);
562 err = fnic_set_intr_mode(fnic);
564 shost_printk(KERN_ERR, fnic->lport->host,
565 "Failed to set intr mode, "
567 goto err_out_dev_close;
570 err = fnic_alloc_vnic_resources(fnic);
572 shost_printk(KERN_ERR, fnic->lport->host,
573 "Failed to alloc vNIC resources, "
575 goto err_out_clear_intr;
579 /* initialize all fnic locks */
580 spin_lock_init(&fnic->fnic_lock);
582 for (i = 0; i < FNIC_WQ_MAX; i++)
583 spin_lock_init(&fnic->wq_lock[i]);
585 for (i = 0; i < FNIC_WQ_COPY_MAX; i++) {
586 spin_lock_init(&fnic->wq_copy_lock[i]);
587 fnic->wq_copy_desc_low[i] = DESC_CLEAN_LOW_WATERMARK;
588 fnic->fw_ack_recd[i] = 0;
589 fnic->fw_ack_index[i] = -1;
592 for (i = 0; i < FNIC_IO_LOCKS; i++)
593 spin_lock_init(&fnic->io_req_lock[i]);
595 fnic->io_req_pool = mempool_create_slab_pool(2, fnic_io_req_cache);
596 if (!fnic->io_req_pool)
597 goto err_out_free_resources;
599 pool = mempool_create(2, fnic_alloc_slab_dma, mempool_free_slab,
600 fnic_sgl_cache[FNIC_SGL_CACHE_DFLT]);
602 goto err_out_free_ioreq_pool;
603 fnic->io_sgl_pool[FNIC_SGL_CACHE_DFLT] = pool;
605 pool = mempool_create(2, fnic_alloc_slab_dma, mempool_free_slab,
606 fnic_sgl_cache[FNIC_SGL_CACHE_MAX]);
608 goto err_out_free_dflt_pool;
609 fnic->io_sgl_pool[FNIC_SGL_CACHE_MAX] = pool;
611 /* setup vlan config, hw inserts vlan header */
612 fnic->vlan_hw_insert = 1;
615 /* Initialize the FIP fcoe_ctrl struct */
616 fnic->ctlr.send = fnic_eth_send;
617 fnic->ctlr.update_mac = fnic_update_mac;
618 fnic->ctlr.get_src_addr = fnic_get_mac;
619 fcoe_ctlr_init(&fnic->ctlr);
620 if (fnic->config.flags & VFCF_FIP_CAPABLE) {
621 shost_printk(KERN_INFO, fnic->lport->host,
622 "firmware supports FIP\n");
623 vnic_dev_add_addr(fnic->vdev, FIP_ALL_ENODE_MACS);
624 vnic_dev_add_addr(fnic->vdev, fnic->ctlr.ctl_src_addr);
626 shost_printk(KERN_INFO, fnic->lport->host,
627 "firmware uses non-FIP mode\n");
628 fnic->ctlr.mode = FIP_ST_NON_FIP;
630 fnic->state = FNIC_IN_FC_MODE;
632 /* Enable hardware stripping of vlan header on ingress */
633 fnic_set_nic_config(fnic, 0, 0, 0, 0, 0, 0, 1);
635 /* Setup notification buffer area */
636 err = fnic_notify_set(fnic);
638 shost_printk(KERN_ERR, fnic->lport->host,
639 "Failed to alloc notify buffer, aborting.\n");
640 goto err_out_free_max_pool;
643 /* Setup notify timer when using MSI interrupts */
644 if (vnic_dev_get_intr_mode(fnic->vdev) == VNIC_DEV_INTR_MODE_MSI)
645 setup_timer(&fnic->notify_timer,
646 fnic_notify_timer, (unsigned long)fnic);
648 /* allocate RQ buffers and post them to RQ*/
649 for (i = 0; i < fnic->rq_count; i++) {
650 err = vnic_rq_fill(&fnic->rq[i], fnic_alloc_rq_frame);
652 shost_printk(KERN_ERR, fnic->lport->host,
653 "fnic_alloc_rq_frame can't alloc "
655 goto err_out_free_rq_buf;
660 * Initialization done with PCI system, hardware, firmware.
663 err = scsi_add_host(lp->host, &pdev->dev);
665 shost_printk(KERN_ERR, fnic->lport->host,
666 "fnic: scsi_add_host failed...exiting\n");
667 goto err_out_free_rq_buf;
670 /* Start local port initiatialization */
673 lp->tt = fnic_transport_template;
675 lp->max_retry_count = fnic->config.flogi_retries;
676 lp->max_rport_retry_count = fnic->config.plogi_retries;
677 lp->service_params = (FCP_SPPF_INIT_FCN | FCP_SPPF_RD_XRDY_DIS |
678 FCP_SPPF_CONF_COMPL);
679 if (fnic->config.flags & VFCF_FCP_SEQ_LVL_ERR)
680 lp->service_params |= FCP_SPPF_RETRY;
682 lp->boot_time = jiffies;
683 lp->e_d_tov = fnic->config.ed_tov;
684 lp->r_a_tov = fnic->config.ra_tov;
685 lp->link_supported_speeds = FC_PORTSPEED_10GBIT;
686 fc_set_wwnn(lp, fnic->config.node_wwn);
687 fc_set_wwpn(lp, fnic->config.port_wwn);
695 if (!fc_exch_mgr_alloc(lp, FC_CLASS_3, FCPIO_HOST_EXCH_RANGE_START,
696 FCPIO_HOST_EXCH_RANGE_END, NULL)) {
698 goto err_out_remove_scsi_host;
703 if (fc_set_mfs(lp, fnic->config.maxdatafieldsize +
704 sizeof(struct fc_frame_header))) {
706 goto err_out_free_exch_mgr;
708 fc_host_maxframe_size(lp->host) = lp->mfs;
710 sprintf(fc_host_symbolic_name(lp->host),
711 DRV_NAME " v" DRV_VERSION " over %s", fnic->name);
713 spin_lock_irqsave(&fnic_list_lock, flags);
714 list_add_tail(&fnic->list, &fnic_list);
715 spin_unlock_irqrestore(&fnic_list_lock, flags);
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 skb_queue_head_init(&fnic->tx_queue);
722 /* Enable all queues */
723 for (i = 0; i < fnic->raw_wq_count; i++)
724 vnic_wq_enable(&fnic->wq[i]);
725 for (i = 0; i < fnic->rq_count; i++)
726 vnic_rq_enable(&fnic->rq[i]);
727 for (i = 0; i < fnic->wq_copy_count; i++)
728 vnic_wq_copy_enable(&fnic->wq_copy[i]);
732 vnic_dev_enable(fnic->vdev);
734 err = fnic_request_intr(fnic);
736 shost_printk(KERN_ERR, fnic->lport->host,
737 "Unable to request irq.\n");
738 goto err_out_free_exch_mgr;
741 for (i = 0; i < fnic->intr_count; i++)
742 vnic_intr_unmask(&fnic->intr[i]);
744 fnic_notify_timer_start(fnic);
748 err_out_free_exch_mgr:
749 fc_exch_mgr_free(lp);
750 err_out_remove_scsi_host:
751 fc_remove_host(lp->host);
752 scsi_remove_host(lp->host);
754 for (i = 0; i < fnic->rq_count; i++)
755 vnic_rq_clean(&fnic->rq[i], fnic_free_rq_buf);
756 vnic_dev_notify_unset(fnic->vdev);
757 err_out_free_max_pool:
758 mempool_destroy(fnic->io_sgl_pool[FNIC_SGL_CACHE_MAX]);
759 err_out_free_dflt_pool:
760 mempool_destroy(fnic->io_sgl_pool[FNIC_SGL_CACHE_DFLT]);
761 err_out_free_ioreq_pool:
762 mempool_destroy(fnic->io_req_pool);
763 err_out_free_resources:
764 fnic_free_vnic_resources(fnic);
766 fnic_clear_intr_mode(fnic);
768 vnic_dev_close(fnic->vdev);
769 err_out_vnic_unregister:
770 vnic_dev_unregister(fnic->vdev);
773 err_out_release_regions:
774 pci_release_regions(pdev);
775 err_out_disable_device:
776 pci_disable_device(pdev);
778 scsi_host_put(lp->host);
783 static void __devexit fnic_remove(struct pci_dev *pdev)
785 struct fnic *fnic = pci_get_drvdata(pdev);
786 struct fc_lport *lp = fnic->lport;
790 * Mark state so that the workqueue thread stops forwarding
791 * received frames and link events to the local port. ISR and
792 * other threads that can queue work items will also stop
793 * creating work items on the fnic workqueue
795 spin_lock_irqsave(&fnic->fnic_lock, flags);
796 fnic->stop_rx_link_events = 1;
797 spin_unlock_irqrestore(&fnic->fnic_lock, flags);
799 if (vnic_dev_get_intr_mode(fnic->vdev) == VNIC_DEV_INTR_MODE_MSI)
800 del_timer_sync(&fnic->notify_timer);
803 * Flush the fnic event queue. After this call, there should
804 * be no event queued for this fnic device in the workqueue
806 flush_workqueue(fnic_event_queue);
807 skb_queue_purge(&fnic->frame_queue);
808 skb_queue_purge(&fnic->tx_queue);
811 * Log off the fabric. This stops all remote ports, dns port,
812 * logs off the fabric. This flushes all rport, disc, lport work
815 fc_fabric_logoff(fnic->lport);
817 spin_lock_irqsave(&fnic->fnic_lock, flags);
819 spin_unlock_irqrestore(&fnic->fnic_lock, flags);
821 fcoe_ctlr_destroy(&fnic->ctlr);
822 fc_lport_destroy(lp);
825 * This stops the fnic device, masks all interrupts. Completed
826 * CQ entries are drained. Posted WQ/RQ/Copy-WQ entries are
831 BUG_ON(!skb_queue_empty(&fnic->frame_queue));
832 BUG_ON(!skb_queue_empty(&fnic->tx_queue));
834 spin_lock_irqsave(&fnic_list_lock, flags);
835 list_del(&fnic->list);
836 spin_unlock_irqrestore(&fnic_list_lock, flags);
838 fc_remove_host(fnic->lport->host);
839 scsi_remove_host(fnic->lport->host);
840 fc_exch_mgr_free(fnic->lport);
841 vnic_dev_notify_unset(fnic->vdev);
842 fnic_free_intr(fnic);
843 fnic_free_vnic_resources(fnic);
844 fnic_clear_intr_mode(fnic);
845 vnic_dev_close(fnic->vdev);
846 vnic_dev_unregister(fnic->vdev);
848 pci_release_regions(pdev);
849 pci_disable_device(pdev);
850 pci_set_drvdata(pdev, NULL);
851 scsi_host_put(lp->host);
854 static struct pci_driver fnic_driver = {
856 .id_table = fnic_id_table,
858 .remove = __devexit_p(fnic_remove),
861 static int __init fnic_init_module(void)
866 printk(KERN_INFO PFX "%s, ver %s\n", DRV_DESCRIPTION, DRV_VERSION);
868 /* Create a cache for allocation of default size sgls */
869 len = sizeof(struct fnic_dflt_sgl_list);
870 fnic_sgl_cache[FNIC_SGL_CACHE_DFLT] = kmem_cache_create
871 ("fnic_sgl_dflt", len + FNIC_SG_DESC_ALIGN, FNIC_SG_DESC_ALIGN,
872 SLAB_HWCACHE_ALIGN | SLAB_CACHE_DMA,
874 if (!fnic_sgl_cache[FNIC_SGL_CACHE_DFLT]) {
875 printk(KERN_ERR PFX "failed to create fnic dflt sgl slab\n");
877 goto err_create_fnic_sgl_slab_dflt;
880 /* Create a cache for allocation of max size sgls*/
881 len = sizeof(struct fnic_sgl_list);
882 fnic_sgl_cache[FNIC_SGL_CACHE_MAX] = kmem_cache_create
883 ("fnic_sgl_max", len + FNIC_SG_DESC_ALIGN, FNIC_SG_DESC_ALIGN,
884 SLAB_HWCACHE_ALIGN | SLAB_CACHE_DMA,
886 if (!fnic_sgl_cache[FNIC_SGL_CACHE_MAX]) {
887 printk(KERN_ERR PFX "failed to create fnic max sgl slab\n");
889 goto err_create_fnic_sgl_slab_max;
892 /* Create a cache of io_req structs for use via mempool */
893 fnic_io_req_cache = kmem_cache_create("fnic_io_req",
894 sizeof(struct fnic_io_req),
895 0, SLAB_HWCACHE_ALIGN, NULL);
896 if (!fnic_io_req_cache) {
897 printk(KERN_ERR PFX "failed to create fnic io_req slab\n");
899 goto err_create_fnic_ioreq_slab;
902 fnic_event_queue = create_singlethread_workqueue("fnic_event_wq");
903 if (!fnic_event_queue) {
904 printk(KERN_ERR PFX "fnic work queue create failed\n");
906 goto err_create_fnic_workq;
909 spin_lock_init(&fnic_list_lock);
910 INIT_LIST_HEAD(&fnic_list);
912 fnic_fc_transport = fc_attach_transport(&fnic_fc_functions);
913 if (!fnic_fc_transport) {
914 printk(KERN_ERR PFX "fc_attach_transport error\n");
916 goto err_fc_transport;
919 /* register the driver with PCI system */
920 err = pci_register_driver(&fnic_driver);
922 printk(KERN_ERR PFX "pci register error\n");
923 goto err_pci_register;
928 fc_release_transport(fnic_fc_transport);
930 destroy_workqueue(fnic_event_queue);
931 err_create_fnic_workq:
932 kmem_cache_destroy(fnic_io_req_cache);
933 err_create_fnic_ioreq_slab:
934 kmem_cache_destroy(fnic_sgl_cache[FNIC_SGL_CACHE_MAX]);
935 err_create_fnic_sgl_slab_max:
936 kmem_cache_destroy(fnic_sgl_cache[FNIC_SGL_CACHE_DFLT]);
937 err_create_fnic_sgl_slab_dflt:
941 static void __exit fnic_cleanup_module(void)
943 pci_unregister_driver(&fnic_driver);
944 destroy_workqueue(fnic_event_queue);
945 kmem_cache_destroy(fnic_sgl_cache[FNIC_SGL_CACHE_MAX]);
946 kmem_cache_destroy(fnic_sgl_cache[FNIC_SGL_CACHE_DFLT]);
947 kmem_cache_destroy(fnic_io_req_cache);
948 fc_release_transport(fnic_fc_transport);
951 module_init(fnic_init_module);
952 module_exit(fnic_cleanup_module);