2
* Copyright 2008 Cisco Systems, Inc. All rights reserved.
3
* Copyright 2007 Nuova Systems, Inc. All rights reserved.
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* This program is free software; you may redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; version 2 of the License.
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
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* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
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* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
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* NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
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* BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
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* ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
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* CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
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#include <linux/module.h>
19
#include <linux/mempool.h>
20
#include <linux/string.h>
21
#include <linux/errno.h>
22
#include <linux/init.h>
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#include <linux/pci.h>
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#include <linux/skbuff.h>
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#include <linux/interrupt.h>
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#include <linux/spinlock.h>
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#include <linux/workqueue.h>
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#include <linux/if_ether.h>
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#include <scsi/fc/fc_fip.h>
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#include <scsi/scsi_host.h>
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#include <scsi/scsi_transport.h>
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#include <scsi/scsi_transport_fc.h>
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#include <scsi/scsi_tcq.h>
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#include <scsi/libfc.h>
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#include <scsi/fc_frame.h>
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#include "vnic_intr.h"
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#include "vnic_stats.h"
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#define PCI_DEVICE_ID_CISCO_FNIC 0x0045
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/* Timer to poll notification area for events. Used for MSI interrupts */
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#define FNIC_NOTIFY_TIMER_PERIOD (2 * HZ)
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static struct kmem_cache *fnic_sgl_cache[FNIC_SGL_NUM_CACHES];
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static struct kmem_cache *fnic_io_req_cache;
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DEFINE_SPINLOCK(fnic_list_lock);
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/* Supported devices by fnic module */
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static struct pci_device_id fnic_id_table[] = {
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{ PCI_DEVICE(PCI_VENDOR_ID_CISCO, PCI_DEVICE_ID_CISCO_FNIC) },
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MODULE_DESCRIPTION(DRV_DESCRIPTION);
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MODULE_AUTHOR("Abhijeet Joglekar <abjoglek@cisco.com>, "
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"Joseph R. Eykholt <jeykholt@cisco.com>");
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MODULE_LICENSE("GPL v2");
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MODULE_VERSION(DRV_VERSION);
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MODULE_DEVICE_TABLE(pci, fnic_id_table);
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unsigned int fnic_log_level;
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module_param(fnic_log_level, int, S_IRUGO|S_IWUSR);
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MODULE_PARM_DESC(fnic_log_level, "bit mask of fnic logging levels");
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static struct libfc_function_template fnic_transport_template = {
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.frame_send = fnic_send,
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.lport_set_port_id = fnic_set_port_id,
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.fcp_abort_io = fnic_empty_scsi_cleanup,
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.fcp_cleanup = fnic_empty_scsi_cleanup,
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.exch_mgr_reset = fnic_exch_mgr_reset
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static int fnic_slave_alloc(struct scsi_device *sdev)
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struct fc_rport *rport = starget_to_rport(scsi_target(sdev));
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struct fc_lport *lp = shost_priv(sdev->host);
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struct fnic *fnic = lport_priv(lp);
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sdev->tagged_supported = 1;
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if (!rport || fc_remote_port_chkready(rport))
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scsi_activate_tcq(sdev, FNIC_DFLT_QUEUE_DEPTH);
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rport->dev_loss_tmo = fnic->config.port_down_timeout / 1000;
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static struct scsi_host_template fnic_host_template = {
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.module = THIS_MODULE,
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.queuecommand = fnic_queuecommand,
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.eh_abort_handler = fnic_abort_cmd,
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.eh_device_reset_handler = fnic_device_reset,
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.eh_host_reset_handler = fnic_host_reset,
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.slave_alloc = fnic_slave_alloc,
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.change_queue_depth = fc_change_queue_depth,
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.change_queue_type = fc_change_queue_type,
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.can_queue = FNIC_MAX_IO_REQ,
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.use_clustering = ENABLE_CLUSTERING,
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.sg_tablesize = FNIC_MAX_SG_DESC_CNT,
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.max_sectors = 0xffff,
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.shost_attrs = fnic_attrs,
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static void fnic_get_host_speed(struct Scsi_Host *shost);
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static struct scsi_transport_template *fnic_fc_transport;
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static struct fc_host_statistics *fnic_get_stats(struct Scsi_Host *);
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static struct fc_function_template fnic_fc_functions = {
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.show_host_node_name = 1,
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.show_host_port_name = 1,
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.show_host_supported_classes = 1,
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.show_host_supported_fc4s = 1,
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.show_host_active_fc4s = 1,
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.show_host_maxframe_size = 1,
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.show_host_port_id = 1,
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.show_host_supported_speeds = 1,
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.get_host_speed = fnic_get_host_speed,
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.show_host_speed = 1,
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.show_host_port_type = 1,
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.get_host_port_state = fc_get_host_port_state,
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.show_host_port_state = 1,
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.show_host_symbolic_name = 1,
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.show_rport_maxframe_size = 1,
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.show_rport_supported_classes = 1,
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.show_host_fabric_name = 1,
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.show_starget_node_name = 1,
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.show_starget_port_name = 1,
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.show_starget_port_id = 1,
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.show_rport_dev_loss_tmo = 1,
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.issue_fc_host_lip = fnic_reset,
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.get_fc_host_stats = fnic_get_stats,
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.dd_fcrport_size = sizeof(struct fc_rport_libfc_priv),
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.terminate_rport_io = fnic_terminate_rport_io,
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.bsg_request = fc_lport_bsg_request,
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static void fnic_get_host_speed(struct Scsi_Host *shost)
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struct fc_lport *lp = shost_priv(shost);
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struct fnic *fnic = lport_priv(lp);
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u32 port_speed = vnic_dev_port_speed(fnic->vdev);
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/* Add in other values as they get defined in fw */
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switch (port_speed) {
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fc_host_speed(shost) = FC_PORTSPEED_10GBIT;
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fc_host_speed(shost) = FC_PORTSPEED_10GBIT;
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static struct fc_host_statistics *fnic_get_stats(struct Scsi_Host *host)
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struct fc_lport *lp = shost_priv(host);
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struct fnic *fnic = lport_priv(lp);
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struct fc_host_statistics *stats = &lp->host_stats;
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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);
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ret = vnic_dev_stats_dump(fnic->vdev, &fnic->stats);
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spin_unlock_irqrestore(&fnic->fnic_lock, flags);
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FNIC_MAIN_DBG(KERN_DEBUG, fnic->lport->host,
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"fnic: Get vnic stats failed"
190
stats->tx_frames = vs->tx.tx_unicast_frames_ok;
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stats->tx_words = vs->tx.tx_unicast_bytes_ok / 4;
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stats->rx_frames = vs->rx.rx_unicast_frames_ok;
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stats->rx_words = vs->rx.rx_unicast_bytes_ok / 4;
194
stats->error_frames = vs->tx.tx_errors + vs->rx.rx_errors;
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stats->dumped_frames = vs->tx.tx_drops + vs->rx.rx_drop;
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stats->invalid_crc_count = vs->rx.rx_crc_errors;
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stats->seconds_since_last_reset = (jiffies - lp->boot_time) / HZ;
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stats->fcp_input_megabytes = div_u64(fnic->fcp_input_bytes, 1000000);
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stats->fcp_output_megabytes = div_u64(fnic->fcp_output_bytes, 1000000);
204
void fnic_log_q_error(struct fnic *fnic)
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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,
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"WQ[%d] error_status"
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" %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,
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"RQ[%d] error_status"
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" %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,
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"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,
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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
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* 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,
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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);