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- /*
- * Copyright 2008 Cisco Systems, Inc. All rights reserved.
- * Copyright 2007 Nuova Systems, Inc. All rights reserved.
- *
- * This program is free software; you may redistribute it and/or modify
- * it under the terms of the GNU General Public License as published by
- * the Free Software Foundation; version 2 of the License.
- *
- * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
- * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
- * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
- * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
- * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
- * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
- * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
- * SOFTWARE.
- */
- #include <linux/module.h>
- #include <linux/mempool.h>
- #include <linux/string.h>
- #include <linux/slab.h>
- #include <linux/errno.h>
- #include <linux/init.h>
- #include <linux/pci.h>
- #include <linux/skbuff.h>
- #include <linux/interrupt.h>
- #include <linux/spinlock.h>
- #include <linux/workqueue.h>
- #include <linux/if_ether.h>
- #include <scsi/fc/fc_fip.h>
- #include <scsi/scsi_host.h>
- #include <scsi/scsi_transport.h>
- #include <scsi/scsi_transport_fc.h>
- #include <scsi/scsi_tcq.h>
- #include <scsi/libfc.h>
- #include <scsi/fc_frame.h>
- #include "vnic_dev.h"
- #include "vnic_intr.h"
- #include "vnic_stats.h"
- #include "fnic_io.h"
- #include "fnic_fip.h"
- #include "fnic.h"
- #define PCI_DEVICE_ID_CISCO_FNIC 0x0045
- /* Timer to poll notification area for events. Used for MSI interrupts */
- #define FNIC_NOTIFY_TIMER_PERIOD (2 * HZ)
- static struct kmem_cache *fnic_sgl_cache[FNIC_SGL_NUM_CACHES];
- static struct kmem_cache *fnic_io_req_cache;
- LIST_HEAD(fnic_list);
- DEFINE_SPINLOCK(fnic_list_lock);
- /* Supported devices by fnic module */
- static struct pci_device_id fnic_id_table[] = {
- { PCI_DEVICE(PCI_VENDOR_ID_CISCO, PCI_DEVICE_ID_CISCO_FNIC) },
- { 0, }
- };
- MODULE_DESCRIPTION(DRV_DESCRIPTION);
- MODULE_AUTHOR("Abhijeet Joglekar <abjoglek@cisco.com>, "
- "Joseph R. Eykholt <jeykholt@cisco.com>");
- MODULE_LICENSE("GPL v2");
- MODULE_VERSION(DRV_VERSION);
- MODULE_DEVICE_TABLE(pci, fnic_id_table);
- unsigned int fnic_log_level;
- module_param(fnic_log_level, int, S_IRUGO|S_IWUSR);
- MODULE_PARM_DESC(fnic_log_level, "bit mask of fnic logging levels");
- unsigned int fnic_trace_max_pages = 16;
- module_param(fnic_trace_max_pages, uint, S_IRUGO|S_IWUSR);
- MODULE_PARM_DESC(fnic_trace_max_pages, "Total allocated memory pages "
- "for fnic trace buffer");
- unsigned int fnic_fc_trace_max_pages = 64;
- module_param(fnic_fc_trace_max_pages, uint, S_IRUGO|S_IWUSR);
- MODULE_PARM_DESC(fnic_fc_trace_max_pages,
- "Total allocated memory pages for fc trace buffer");
- static unsigned int fnic_max_qdepth = FNIC_DFLT_QUEUE_DEPTH;
- module_param(fnic_max_qdepth, uint, S_IRUGO|S_IWUSR);
- MODULE_PARM_DESC(fnic_max_qdepth, "Queue depth to report for each LUN");
- static struct libfc_function_template fnic_transport_template = {
- .frame_send = fnic_send,
- .lport_set_port_id = fnic_set_port_id,
- .fcp_abort_io = fnic_empty_scsi_cleanup,
- .fcp_cleanup = fnic_empty_scsi_cleanup,
- .exch_mgr_reset = fnic_exch_mgr_reset
- };
- static int fnic_slave_alloc(struct scsi_device *sdev)
- {
- struct fc_rport *rport = starget_to_rport(scsi_target(sdev));
- if (!rport || fc_remote_port_chkready(rport))
- return -ENXIO;
- scsi_change_queue_depth(sdev, fnic_max_qdepth);
- return 0;
- }
- static struct scsi_host_template fnic_host_template = {
- .module = THIS_MODULE,
- .name = DRV_NAME,
- .queuecommand = fnic_queuecommand,
- .eh_abort_handler = fnic_abort_cmd,
- .eh_device_reset_handler = fnic_device_reset,
- .eh_host_reset_handler = fnic_host_reset,
- .slave_alloc = fnic_slave_alloc,
- .change_queue_depth = scsi_change_queue_depth,
- .this_id = -1,
- .cmd_per_lun = 3,
- .can_queue = FNIC_DFLT_IO_REQ,
- .use_clustering = ENABLE_CLUSTERING,
- .sg_tablesize = FNIC_MAX_SG_DESC_CNT,
- .max_sectors = 0xffff,
- .shost_attrs = fnic_attrs,
- .track_queue_depth = 1,
- };
- static void
- fnic_set_rport_dev_loss_tmo(struct fc_rport *rport, u32 timeout)
- {
- if (timeout)
- rport->dev_loss_tmo = timeout;
- else
- rport->dev_loss_tmo = 1;
- }
- static void fnic_get_host_speed(struct Scsi_Host *shost);
- static struct scsi_transport_template *fnic_fc_transport;
- static struct fc_host_statistics *fnic_get_stats(struct Scsi_Host *);
- static void fnic_reset_host_stats(struct Scsi_Host *);
- static struct fc_function_template fnic_fc_functions = {
- .show_host_node_name = 1,
- .show_host_port_name = 1,
- .show_host_supported_classes = 1,
- .show_host_supported_fc4s = 1,
- .show_host_active_fc4s = 1,
- .show_host_maxframe_size = 1,
- .show_host_port_id = 1,
- .show_host_supported_speeds = 1,
- .get_host_speed = fnic_get_host_speed,
- .show_host_speed = 1,
- .show_host_port_type = 1,
- .get_host_port_state = fc_get_host_port_state,
- .show_host_port_state = 1,
- .show_host_symbolic_name = 1,
- .show_rport_maxframe_size = 1,
- .show_rport_supported_classes = 1,
- .show_host_fabric_name = 1,
- .show_starget_node_name = 1,
- .show_starget_port_name = 1,
- .show_starget_port_id = 1,
- .show_rport_dev_loss_tmo = 1,
- .set_rport_dev_loss_tmo = fnic_set_rport_dev_loss_tmo,
- .issue_fc_host_lip = fnic_reset,
- .get_fc_host_stats = fnic_get_stats,
- .reset_fc_host_stats = fnic_reset_host_stats,
- .dd_fcrport_size = sizeof(struct fc_rport_libfc_priv),
- .terminate_rport_io = fnic_terminate_rport_io,
- .bsg_request = fc_lport_bsg_request,
- };
- static void fnic_get_host_speed(struct Scsi_Host *shost)
- {
- struct fc_lport *lp = shost_priv(shost);
- struct fnic *fnic = lport_priv(lp);
- u32 port_speed = vnic_dev_port_speed(fnic->vdev);
- /* Add in other values as they get defined in fw */
- switch (port_speed) {
- case 10000:
- fc_host_speed(shost) = FC_PORTSPEED_10GBIT;
- break;
- default:
- fc_host_speed(shost) = FC_PORTSPEED_10GBIT;
- break;
- }
- }
- static struct fc_host_statistics *fnic_get_stats(struct Scsi_Host *host)
- {
- int ret;
- struct fc_lport *lp = shost_priv(host);
- struct fnic *fnic = lport_priv(lp);
- struct fc_host_statistics *stats = &lp->host_stats;
- struct vnic_stats *vs;
- unsigned long flags;
- if (time_before(jiffies, fnic->stats_time + HZ / FNIC_STATS_RATE_LIMIT))
- return stats;
- fnic->stats_time = jiffies;
- spin_lock_irqsave(&fnic->fnic_lock, flags);
- ret = vnic_dev_stats_dump(fnic->vdev, &fnic->stats);
- spin_unlock_irqrestore(&fnic->fnic_lock, flags);
- if (ret) {
- FNIC_MAIN_DBG(KERN_DEBUG, fnic->lport->host,
- "fnic: Get vnic stats failed"
- " 0x%x", ret);
- return stats;
- }
- vs = fnic->stats;
- stats->tx_frames = vs->tx.tx_unicast_frames_ok;
- stats->tx_words = vs->tx.tx_unicast_bytes_ok / 4;
- stats->rx_frames = vs->rx.rx_unicast_frames_ok;
- stats->rx_words = vs->rx.rx_unicast_bytes_ok / 4;
- stats->error_frames = vs->tx.tx_errors + vs->rx.rx_errors;
- stats->dumped_frames = vs->tx.tx_drops + vs->rx.rx_drop;
- stats->invalid_crc_count = vs->rx.rx_crc_errors;
- stats->seconds_since_last_reset =
- (jiffies - fnic->stats_reset_time) / HZ;
- stats->fcp_input_megabytes = div_u64(fnic->fcp_input_bytes, 1000000);
- stats->fcp_output_megabytes = div_u64(fnic->fcp_output_bytes, 1000000);
- return stats;
- }
- /*
- * fnic_dump_fchost_stats
- * note : dumps fc_statistics into system logs
- */
- void fnic_dump_fchost_stats(struct Scsi_Host *host,
- struct fc_host_statistics *stats)
- {
- FNIC_MAIN_NOTE(KERN_NOTICE, host,
- "fnic: seconds since last reset = %llu\n",
- stats->seconds_since_last_reset);
- FNIC_MAIN_NOTE(KERN_NOTICE, host,
- "fnic: tx frames = %llu\n",
- stats->tx_frames);
- FNIC_MAIN_NOTE(KERN_NOTICE, host,
- "fnic: tx words = %llu\n",
- stats->tx_words);
- FNIC_MAIN_NOTE(KERN_NOTICE, host,
- "fnic: rx frames = %llu\n",
- stats->rx_frames);
- FNIC_MAIN_NOTE(KERN_NOTICE, host,
- "fnic: rx words = %llu\n",
- stats->rx_words);
- FNIC_MAIN_NOTE(KERN_NOTICE, host,
- "fnic: lip count = %llu\n",
- stats->lip_count);
- FNIC_MAIN_NOTE(KERN_NOTICE, host,
- "fnic: nos count = %llu\n",
- stats->nos_count);
- FNIC_MAIN_NOTE(KERN_NOTICE, host,
- "fnic: error frames = %llu\n",
- stats->error_frames);
- FNIC_MAIN_NOTE(KERN_NOTICE, host,
- "fnic: dumped frames = %llu\n",
- stats->dumped_frames);
- FNIC_MAIN_NOTE(KERN_NOTICE, host,
- "fnic: link failure count = %llu\n",
- stats->link_failure_count);
- FNIC_MAIN_NOTE(KERN_NOTICE, host,
- "fnic: loss of sync count = %llu\n",
- stats->loss_of_sync_count);
- FNIC_MAIN_NOTE(KERN_NOTICE, host,
- "fnic: loss of signal count = %llu\n",
- stats->loss_of_signal_count);
- FNIC_MAIN_NOTE(KERN_NOTICE, host,
- "fnic: prim seq protocol err count = %llu\n",
- stats->prim_seq_protocol_err_count);
- FNIC_MAIN_NOTE(KERN_NOTICE, host,
- "fnic: invalid tx word count= %llu\n",
- stats->invalid_tx_word_count);
- FNIC_MAIN_NOTE(KERN_NOTICE, host,
- "fnic: invalid crc count = %llu\n",
- stats->invalid_crc_count);
- FNIC_MAIN_NOTE(KERN_NOTICE, host,
- "fnic: fcp input requests = %llu\n",
- stats->fcp_input_requests);
- FNIC_MAIN_NOTE(KERN_NOTICE, host,
- "fnic: fcp output requests = %llu\n",
- stats->fcp_output_requests);
- FNIC_MAIN_NOTE(KERN_NOTICE, host,
- "fnic: fcp control requests = %llu\n",
- stats->fcp_control_requests);
- FNIC_MAIN_NOTE(KERN_NOTICE, host,
- "fnic: fcp input megabytes = %llu\n",
- stats->fcp_input_megabytes);
- FNIC_MAIN_NOTE(KERN_NOTICE, host,
- "fnic: fcp output megabytes = %llu\n",
- stats->fcp_output_megabytes);
- return;
- }
- /*
- * fnic_reset_host_stats : clears host stats
- * note : called when reset_statistics set under sysfs dir
- */
- static void fnic_reset_host_stats(struct Scsi_Host *host)
- {
- int ret;
- struct fc_lport *lp = shost_priv(host);
- struct fnic *fnic = lport_priv(lp);
- struct fc_host_statistics *stats;
- unsigned long flags;
- /* dump current stats, before clearing them */
- stats = fnic_get_stats(host);
- fnic_dump_fchost_stats(host, stats);
- spin_lock_irqsave(&fnic->fnic_lock, flags);
- ret = vnic_dev_stats_clear(fnic->vdev);
- spin_unlock_irqrestore(&fnic->fnic_lock, flags);
- if (ret) {
- FNIC_MAIN_DBG(KERN_DEBUG, fnic->lport->host,
- "fnic: Reset vnic stats failed"
- " 0x%x", ret);
- return;
- }
- fnic->stats_reset_time = jiffies;
- memset(stats, 0, sizeof(*stats));
- return;
- }
- void fnic_log_q_error(struct fnic *fnic)
- {
- unsigned int i;
- u32 error_status;
- for (i = 0; i < fnic->raw_wq_count; i++) {
- error_status = ioread32(&fnic->wq[i].ctrl->error_status);
- if (error_status)
- shost_printk(KERN_ERR, fnic->lport->host,
- "WQ[%d] error_status"
- " %d\n", i, error_status);
- }
- for (i = 0; i < fnic->rq_count; i++) {
- error_status = ioread32(&fnic->rq[i].ctrl->error_status);
- if (error_status)
- shost_printk(KERN_ERR, fnic->lport->host,
- "RQ[%d] error_status"
- " %d\n", i, error_status);
- }
- for (i = 0; i < fnic->wq_copy_count; i++) {
- error_status = ioread32(&fnic->wq_copy[i].ctrl->error_status);
- if (error_status)
- shost_printk(KERN_ERR, fnic->lport->host,
- "CWQ[%d] error_status"
- " %d\n", i, error_status);
- }
- }
- void fnic_handle_link_event(struct fnic *fnic)
- {
- unsigned long flags;
- spin_lock_irqsave(&fnic->fnic_lock, flags);
- if (fnic->stop_rx_link_events) {
- spin_unlock_irqrestore(&fnic->fnic_lock, flags);
- return;
- }
- spin_unlock_irqrestore(&fnic->fnic_lock, flags);
- queue_work(fnic_event_queue, &fnic->link_work);
- }
- static int fnic_notify_set(struct fnic *fnic)
- {
- int err;
- switch (vnic_dev_get_intr_mode(fnic->vdev)) {
- case VNIC_DEV_INTR_MODE_INTX:
- err = vnic_dev_notify_set(fnic->vdev, FNIC_INTX_NOTIFY);
- break;
- case VNIC_DEV_INTR_MODE_MSI:
- err = vnic_dev_notify_set(fnic->vdev, -1);
- break;
- case VNIC_DEV_INTR_MODE_MSIX:
- err = vnic_dev_notify_set(fnic->vdev, FNIC_MSIX_ERR_NOTIFY);
- break;
- default:
- shost_printk(KERN_ERR, fnic->lport->host,
- "Interrupt mode should be set up"
- " before devcmd notify set %d\n",
- vnic_dev_get_intr_mode(fnic->vdev));
- err = -1;
- break;
- }
- return err;
- }
- static void fnic_notify_timer(unsigned long data)
- {
- struct fnic *fnic = (struct fnic *)data;
- fnic_handle_link_event(fnic);
- mod_timer(&fnic->notify_timer,
- round_jiffies(jiffies + FNIC_NOTIFY_TIMER_PERIOD));
- }
- static void fnic_fip_notify_timer(unsigned long data)
- {
- struct fnic *fnic = (struct fnic *)data;
- fnic_handle_fip_timer(fnic);
- }
- static void fnic_notify_timer_start(struct fnic *fnic)
- {
- switch (vnic_dev_get_intr_mode(fnic->vdev)) {
- case VNIC_DEV_INTR_MODE_MSI:
- /*
- * Schedule first timeout immediately. The driver is
- * initiatialized and ready to look for link up notification
- */
- mod_timer(&fnic->notify_timer, jiffies);
- break;
- default:
- /* Using intr for notification for INTx/MSI-X */
- break;
- };
- }
- static int fnic_dev_wait(struct vnic_dev *vdev,
- int (*start)(struct vnic_dev *, int),
- int (*finished)(struct vnic_dev *, int *),
- int arg)
- {
- unsigned long time;
- int done;
- int err;
- int count;
- count = 0;
- err = start(vdev, arg);
- if (err)
- return err;
- /* Wait for func to complete.
- * Sometime schedule_timeout_uninterruptible take long time
- * to wake up so we do not retry as we are only waiting for
- * 2 seconds in while loop. By adding count, we make sure
- * we try atleast three times before returning -ETIMEDOUT
- */
- time = jiffies + (HZ * 2);
- do {
- err = finished(vdev, &done);
- count++;
- if (err)
- return err;
- if (done)
- return 0;
- schedule_timeout_uninterruptible(HZ / 10);
- } while (time_after(time, jiffies) || (count < 3));
- return -ETIMEDOUT;
- }
- static int fnic_cleanup(struct fnic *fnic)
- {
- unsigned int i;
- int err;
- vnic_dev_disable(fnic->vdev);
- for (i = 0; i < fnic->intr_count; i++)
- vnic_intr_mask(&fnic->intr[i]);
- for (i = 0; i < fnic->rq_count; i++) {
- err = vnic_rq_disable(&fnic->rq[i]);
- if (err)
- return err;
- }
- for (i = 0; i < fnic->raw_wq_count; i++) {
- err = vnic_wq_disable(&fnic->wq[i]);
- if (err)
- return err;
- }
- for (i = 0; i < fnic->wq_copy_count; i++) {
- err = vnic_wq_copy_disable(&fnic->wq_copy[i]);
- if (err)
- return err;
- }
- /* Clean up completed IOs and FCS frames */
- fnic_wq_copy_cmpl_handler(fnic, -1);
- fnic_wq_cmpl_handler(fnic, -1);
- fnic_rq_cmpl_handler(fnic, -1);
- /* Clean up the IOs and FCS frames that have not completed */
- for (i = 0; i < fnic->raw_wq_count; i++)
- vnic_wq_clean(&fnic->wq[i], fnic_free_wq_buf);
- for (i = 0; i < fnic->rq_count; i++)
- vnic_rq_clean(&fnic->rq[i], fnic_free_rq_buf);
- for (i = 0; i < fnic->wq_copy_count; i++)
- vnic_wq_copy_clean(&fnic->wq_copy[i],
- fnic_wq_copy_cleanup_handler);
- for (i = 0; i < fnic->cq_count; i++)
- vnic_cq_clean(&fnic->cq[i]);
- for (i = 0; i < fnic->intr_count; i++)
- vnic_intr_clean(&fnic->intr[i]);
- mempool_destroy(fnic->io_req_pool);
- for (i = 0; i < FNIC_SGL_NUM_CACHES; i++)
- mempool_destroy(fnic->io_sgl_pool[i]);
- return 0;
- }
- static void fnic_iounmap(struct fnic *fnic)
- {
- if (fnic->bar0.vaddr)
- iounmap(fnic->bar0.vaddr);
- }
- /**
- * fnic_get_mac() - get assigned data MAC address for FIP code.
- * @lport: local port.
- */
- static u8 *fnic_get_mac(struct fc_lport *lport)
- {
- struct fnic *fnic = lport_priv(lport);
- return fnic->data_src_addr;
- }
- static void fnic_set_vlan(struct fnic *fnic, u16 vlan_id)
- {
- u16 old_vlan;
- old_vlan = vnic_dev_set_default_vlan(fnic->vdev, vlan_id);
- }
- static int fnic_probe(struct pci_dev *pdev, const struct pci_device_id *ent)
- {
- struct Scsi_Host *host;
- struct fc_lport *lp;
- struct fnic *fnic;
- mempool_t *pool;
- int err;
- int i;
- unsigned long flags;
- /*
- * Allocate SCSI Host and set up association between host,
- * local port, and fnic
- */
- lp = libfc_host_alloc(&fnic_host_template, sizeof(struct fnic));
- if (!lp) {
- printk(KERN_ERR PFX "Unable to alloc libfc local port\n");
- err = -ENOMEM;
- goto err_out;
- }
- host = lp->host;
- fnic = lport_priv(lp);
- fnic->lport = lp;
- fnic->ctlr.lp = lp;
- snprintf(fnic->name, sizeof(fnic->name) - 1, "%s%d", DRV_NAME,
- host->host_no);
- host->transportt = fnic_fc_transport;
- err = fnic_stats_debugfs_init(fnic);
- if (err) {
- shost_printk(KERN_ERR, fnic->lport->host,
- "Failed to initialize debugfs for stats\n");
- fnic_stats_debugfs_remove(fnic);
- }
- /* Setup PCI resources */
- pci_set_drvdata(pdev, fnic);
- fnic->pdev = pdev;
- err = pci_enable_device(pdev);
- if (err) {
- shost_printk(KERN_ERR, fnic->lport->host,
- "Cannot enable PCI device, aborting.\n");
- goto err_out_free_hba;
- }
- err = pci_request_regions(pdev, DRV_NAME);
- if (err) {
- shost_printk(KERN_ERR, fnic->lport->host,
- "Cannot enable PCI resources, aborting\n");
- goto err_out_disable_device;
- }
- pci_set_master(pdev);
- /* Query PCI controller on system for DMA addressing
- * limitation for the device. Try 64-bit first, and
- * fail to 32-bit.
- */
- err = pci_set_dma_mask(pdev, DMA_BIT_MASK(64));
- if (err) {
- err = pci_set_dma_mask(pdev, DMA_BIT_MASK(32));
- if (err) {
- shost_printk(KERN_ERR, fnic->lport->host,
- "No usable DMA configuration "
- "aborting\n");
- goto err_out_release_regions;
- }
- err = pci_set_consistent_dma_mask(pdev, DMA_BIT_MASK(32));
- if (err) {
- shost_printk(KERN_ERR, fnic->lport->host,
- "Unable to obtain 32-bit DMA "
- "for consistent allocations, aborting.\n");
- goto err_out_release_regions;
- }
- } else {
- err = pci_set_consistent_dma_mask(pdev, DMA_BIT_MASK(64));
- if (err) {
- shost_printk(KERN_ERR, fnic->lport->host,
- "Unable to obtain 64-bit DMA "
- "for consistent allocations, aborting.\n");
- goto err_out_release_regions;
- }
- }
- /* Map vNIC resources from BAR0 */
- if (!(pci_resource_flags(pdev, 0) & IORESOURCE_MEM)) {
- shost_printk(KERN_ERR, fnic->lport->host,
- "BAR0 not memory-map'able, aborting.\n");
- err = -ENODEV;
- goto err_out_release_regions;
- }
- fnic->bar0.vaddr = pci_iomap(pdev, 0, 0);
- fnic->bar0.bus_addr = pci_resource_start(pdev, 0);
- fnic->bar0.len = pci_resource_len(pdev, 0);
- if (!fnic->bar0.vaddr) {
- shost_printk(KERN_ERR, fnic->lport->host,
- "Cannot memory-map BAR0 res hdr, "
- "aborting.\n");
- err = -ENODEV;
- goto err_out_release_regions;
- }
- fnic->vdev = vnic_dev_register(NULL, fnic, pdev, &fnic->bar0);
- if (!fnic->vdev) {
- shost_printk(KERN_ERR, fnic->lport->host,
- "vNIC registration failed, "
- "aborting.\n");
- err = -ENODEV;
- goto err_out_iounmap;
- }
- err = fnic_dev_wait(fnic->vdev, vnic_dev_open,
- vnic_dev_open_done, 0);
- if (err) {
- shost_printk(KERN_ERR, fnic->lport->host,
- "vNIC dev open failed, aborting.\n");
- goto err_out_vnic_unregister;
- }
- err = vnic_dev_init(fnic->vdev, 0);
- if (err) {
- shost_printk(KERN_ERR, fnic->lport->host,
- "vNIC dev init failed, aborting.\n");
- goto err_out_dev_close;
- }
- err = vnic_dev_mac_addr(fnic->vdev, fnic->ctlr.ctl_src_addr);
- if (err) {
- shost_printk(KERN_ERR, fnic->lport->host,
- "vNIC get MAC addr failed \n");
- goto err_out_dev_close;
- }
- /* set data_src for point-to-point mode and to keep it non-zero */
- memcpy(fnic->data_src_addr, fnic->ctlr.ctl_src_addr, ETH_ALEN);
- /* Get vNIC configuration */
- err = fnic_get_vnic_config(fnic);
- if (err) {
- shost_printk(KERN_ERR, fnic->lport->host,
- "Get vNIC configuration failed, "
- "aborting.\n");
- goto err_out_dev_close;
- }
- /* Configure Maximum Outstanding IO reqs*/
- if (fnic->config.io_throttle_count != FNIC_UCSM_DFLT_THROTTLE_CNT_BLD) {
- host->can_queue = min_t(u32, FNIC_MAX_IO_REQ,
- max_t(u32, FNIC_MIN_IO_REQ,
- fnic->config.io_throttle_count));
- }
- fnic->fnic_max_tag_id = host->can_queue;
- host->max_lun = fnic->config.luns_per_tgt;
- host->max_id = FNIC_MAX_FCP_TARGET;
- host->max_cmd_len = FCOE_MAX_CMD_LEN;
- fnic_get_res_counts(fnic);
- err = fnic_set_intr_mode(fnic);
- if (err) {
- shost_printk(KERN_ERR, fnic->lport->host,
- "Failed to set intr mode, "
- "aborting.\n");
- goto err_out_dev_close;
- }
- err = fnic_alloc_vnic_resources(fnic);
- if (err) {
- shost_printk(KERN_ERR, fnic->lport->host,
- "Failed to alloc vNIC resources, "
- "aborting.\n");
- goto err_out_clear_intr;
- }
- /* initialize all fnic locks */
- spin_lock_init(&fnic->fnic_lock);
- for (i = 0; i < FNIC_WQ_MAX; i++)
- spin_lock_init(&fnic->wq_lock[i]);
- for (i = 0; i < FNIC_WQ_COPY_MAX; i++) {
- spin_lock_init(&fnic->wq_copy_lock[i]);
- fnic->wq_copy_desc_low[i] = DESC_CLEAN_LOW_WATERMARK;
- fnic->fw_ack_recd[i] = 0;
- fnic->fw_ack_index[i] = -1;
- }
- for (i = 0; i < FNIC_IO_LOCKS; i++)
- spin_lock_init(&fnic->io_req_lock[i]);
- fnic->io_req_pool = mempool_create_slab_pool(2, fnic_io_req_cache);
- if (!fnic->io_req_pool)
- goto err_out_free_resources;
- pool = mempool_create_slab_pool(2, fnic_sgl_cache[FNIC_SGL_CACHE_DFLT]);
- if (!pool)
- goto err_out_free_ioreq_pool;
- fnic->io_sgl_pool[FNIC_SGL_CACHE_DFLT] = pool;
- pool = mempool_create_slab_pool(2, fnic_sgl_cache[FNIC_SGL_CACHE_MAX]);
- if (!pool)
- goto err_out_free_dflt_pool;
- fnic->io_sgl_pool[FNIC_SGL_CACHE_MAX] = pool;
- /* setup vlan config, hw inserts vlan header */
- fnic->vlan_hw_insert = 1;
- fnic->vlan_id = 0;
- /* Initialize the FIP fcoe_ctrl struct */
- fnic->ctlr.send = fnic_eth_send;
- fnic->ctlr.update_mac = fnic_update_mac;
- fnic->ctlr.get_src_addr = fnic_get_mac;
- if (fnic->config.flags & VFCF_FIP_CAPABLE) {
- shost_printk(KERN_INFO, fnic->lport->host,
- "firmware supports FIP\n");
- /* enable directed and multicast */
- vnic_dev_packet_filter(fnic->vdev, 1, 1, 0, 0, 0);
- vnic_dev_add_addr(fnic->vdev, FIP_ALL_ENODE_MACS);
- vnic_dev_add_addr(fnic->vdev, fnic->ctlr.ctl_src_addr);
- fnic->set_vlan = fnic_set_vlan;
- fcoe_ctlr_init(&fnic->ctlr, FIP_MODE_AUTO);
- setup_timer(&fnic->fip_timer, fnic_fip_notify_timer,
- (unsigned long)fnic);
- spin_lock_init(&fnic->vlans_lock);
- INIT_WORK(&fnic->fip_frame_work, fnic_handle_fip_frame);
- INIT_WORK(&fnic->event_work, fnic_handle_event);
- skb_queue_head_init(&fnic->fip_frame_queue);
- INIT_LIST_HEAD(&fnic->evlist);
- INIT_LIST_HEAD(&fnic->vlans);
- } else {
- shost_printk(KERN_INFO, fnic->lport->host,
- "firmware uses non-FIP mode\n");
- fcoe_ctlr_init(&fnic->ctlr, FIP_MODE_NON_FIP);
- fnic->ctlr.state = FIP_ST_NON_FIP;
- }
- fnic->state = FNIC_IN_FC_MODE;
- atomic_set(&fnic->in_flight, 0);
- fnic->state_flags = FNIC_FLAGS_NONE;
- /* Enable hardware stripping of vlan header on ingress */
- fnic_set_nic_config(fnic, 0, 0, 0, 0, 0, 0, 1);
- /* Setup notification buffer area */
- err = fnic_notify_set(fnic);
- if (err) {
- shost_printk(KERN_ERR, fnic->lport->host,
- "Failed to alloc notify buffer, aborting.\n");
- goto err_out_free_max_pool;
- }
- /* Setup notify timer when using MSI interrupts */
- if (vnic_dev_get_intr_mode(fnic->vdev) == VNIC_DEV_INTR_MODE_MSI)
- setup_timer(&fnic->notify_timer,
- fnic_notify_timer, (unsigned long)fnic);
- /* allocate RQ buffers and post them to RQ*/
- for (i = 0; i < fnic->rq_count; i++) {
- err = vnic_rq_fill(&fnic->rq[i], fnic_alloc_rq_frame);
- if (err) {
- shost_printk(KERN_ERR, fnic->lport->host,
- "fnic_alloc_rq_frame can't alloc "
- "frame\n");
- goto err_out_free_rq_buf;
- }
- }
- /*
- * Initialization done with PCI system, hardware, firmware.
- * Add host to SCSI
- */
- err = scsi_add_host(lp->host, &pdev->dev);
- if (err) {
- shost_printk(KERN_ERR, fnic->lport->host,
- "fnic: scsi_add_host failed...exiting\n");
- goto err_out_free_rq_buf;
- }
- /* Start local port initiatialization */
- lp->link_up = 0;
- lp->max_retry_count = fnic->config.flogi_retries;
- lp->max_rport_retry_count = fnic->config.plogi_retries;
- lp->service_params = (FCP_SPPF_INIT_FCN | FCP_SPPF_RD_XRDY_DIS |
- FCP_SPPF_CONF_COMPL);
- if (fnic->config.flags & VFCF_FCP_SEQ_LVL_ERR)
- lp->service_params |= FCP_SPPF_RETRY;
- lp->boot_time = jiffies;
- lp->e_d_tov = fnic->config.ed_tov;
- lp->r_a_tov = fnic->config.ra_tov;
- lp->link_supported_speeds = FC_PORTSPEED_10GBIT;
- fc_set_wwnn(lp, fnic->config.node_wwn);
- fc_set_wwpn(lp, fnic->config.port_wwn);
- fcoe_libfc_config(lp, &fnic->ctlr, &fnic_transport_template, 0);
- if (!fc_exch_mgr_alloc(lp, FC_CLASS_3, FCPIO_HOST_EXCH_RANGE_START,
- FCPIO_HOST_EXCH_RANGE_END, NULL)) {
- err = -ENOMEM;
- goto err_out_remove_scsi_host;
- }
- fc_lport_init_stats(lp);
- fnic->stats_reset_time = jiffies;
- fc_lport_config(lp);
- if (fc_set_mfs(lp, fnic->config.maxdatafieldsize +
- sizeof(struct fc_frame_header))) {
- err = -EINVAL;
- goto err_out_free_exch_mgr;
- }
- fc_host_maxframe_size(lp->host) = lp->mfs;
- fc_host_dev_loss_tmo(lp->host) = fnic->config.port_down_timeout / 1000;
- sprintf(fc_host_symbolic_name(lp->host),
- DRV_NAME " v" DRV_VERSION " over %s", fnic->name);
- spin_lock_irqsave(&fnic_list_lock, flags);
- list_add_tail(&fnic->list, &fnic_list);
- spin_unlock_irqrestore(&fnic_list_lock, flags);
- INIT_WORK(&fnic->link_work, fnic_handle_link);
- INIT_WORK(&fnic->frame_work, fnic_handle_frame);
- skb_queue_head_init(&fnic->frame_queue);
- skb_queue_head_init(&fnic->tx_queue);
- /* Enable all queues */
- for (i = 0; i < fnic->raw_wq_count; i++)
- vnic_wq_enable(&fnic->wq[i]);
- for (i = 0; i < fnic->rq_count; i++)
- vnic_rq_enable(&fnic->rq[i]);
- for (i = 0; i < fnic->wq_copy_count; i++)
- vnic_wq_copy_enable(&fnic->wq_copy[i]);
- fc_fabric_login(lp);
- vnic_dev_enable(fnic->vdev);
- err = fnic_request_intr(fnic);
- if (err) {
- shost_printk(KERN_ERR, fnic->lport->host,
- "Unable to request irq.\n");
- goto err_out_free_exch_mgr;
- }
- for (i = 0; i < fnic->intr_count; i++)
- vnic_intr_unmask(&fnic->intr[i]);
- fnic_notify_timer_start(fnic);
- return 0;
- err_out_free_exch_mgr:
- fc_exch_mgr_free(lp);
- err_out_remove_scsi_host:
- fc_remove_host(lp->host);
- scsi_remove_host(lp->host);
- err_out_free_rq_buf:
- for (i = 0; i < fnic->rq_count; i++)
- vnic_rq_clean(&fnic->rq[i], fnic_free_rq_buf);
- vnic_dev_notify_unset(fnic->vdev);
- err_out_free_max_pool:
- mempool_destroy(fnic->io_sgl_pool[FNIC_SGL_CACHE_MAX]);
- err_out_free_dflt_pool:
- mempool_destroy(fnic->io_sgl_pool[FNIC_SGL_CACHE_DFLT]);
- err_out_free_ioreq_pool:
- mempool_destroy(fnic->io_req_pool);
- err_out_free_resources:
- fnic_free_vnic_resources(fnic);
- err_out_clear_intr:
- fnic_clear_intr_mode(fnic);
- err_out_dev_close:
- vnic_dev_close(fnic->vdev);
- err_out_vnic_unregister:
- vnic_dev_unregister(fnic->vdev);
- err_out_iounmap:
- fnic_iounmap(fnic);
- err_out_release_regions:
- pci_release_regions(pdev);
- err_out_disable_device:
- pci_disable_device(pdev);
- err_out_free_hba:
- fnic_stats_debugfs_remove(fnic);
- scsi_host_put(lp->host);
- err_out:
- return err;
- }
- static void fnic_remove(struct pci_dev *pdev)
- {
- struct fnic *fnic = pci_get_drvdata(pdev);
- struct fc_lport *lp = fnic->lport;
- unsigned long flags;
- /*
- * Mark state so that the workqueue thread stops forwarding
- * received frames and link events to the local port. ISR and
- * other threads that can queue work items will also stop
- * creating work items on the fnic workqueue
- */
- spin_lock_irqsave(&fnic->fnic_lock, flags);
- fnic->stop_rx_link_events = 1;
- spin_unlock_irqrestore(&fnic->fnic_lock, flags);
- if (vnic_dev_get_intr_mode(fnic->vdev) == VNIC_DEV_INTR_MODE_MSI)
- del_timer_sync(&fnic->notify_timer);
- /*
- * Flush the fnic event queue. After this call, there should
- * be no event queued for this fnic device in the workqueue
- */
- flush_workqueue(fnic_event_queue);
- skb_queue_purge(&fnic->frame_queue);
- skb_queue_purge(&fnic->tx_queue);
- if (fnic->config.flags & VFCF_FIP_CAPABLE) {
- del_timer_sync(&fnic->fip_timer);
- skb_queue_purge(&fnic->fip_frame_queue);
- fnic_fcoe_reset_vlans(fnic);
- fnic_fcoe_evlist_free(fnic);
- }
- /*
- * Log off the fabric. This stops all remote ports, dns port,
- * logs off the fabric. This flushes all rport, disc, lport work
- * before returning
- */
- fc_fabric_logoff(fnic->lport);
- spin_lock_irqsave(&fnic->fnic_lock, flags);
- fnic->in_remove = 1;
- spin_unlock_irqrestore(&fnic->fnic_lock, flags);
- fcoe_ctlr_destroy(&fnic->ctlr);
- fc_lport_destroy(lp);
- fnic_stats_debugfs_remove(fnic);
- /*
- * This stops the fnic device, masks all interrupts. Completed
- * CQ entries are drained. Posted WQ/RQ/Copy-WQ entries are
- * cleaned up
- */
- fnic_cleanup(fnic);
- BUG_ON(!skb_queue_empty(&fnic->frame_queue));
- BUG_ON(!skb_queue_empty(&fnic->tx_queue));
- spin_lock_irqsave(&fnic_list_lock, flags);
- list_del(&fnic->list);
- spin_unlock_irqrestore(&fnic_list_lock, flags);
- fc_remove_host(fnic->lport->host);
- scsi_remove_host(fnic->lport->host);
- fc_exch_mgr_free(fnic->lport);
- vnic_dev_notify_unset(fnic->vdev);
- fnic_free_intr(fnic);
- fnic_free_vnic_resources(fnic);
- fnic_clear_intr_mode(fnic);
- vnic_dev_close(fnic->vdev);
- vnic_dev_unregister(fnic->vdev);
- fnic_iounmap(fnic);
- pci_release_regions(pdev);
- pci_disable_device(pdev);
- scsi_host_put(lp->host);
- }
- static struct pci_driver fnic_driver = {
- .name = DRV_NAME,
- .id_table = fnic_id_table,
- .probe = fnic_probe,
- .remove = fnic_remove,
- };
- static int __init fnic_init_module(void)
- {
- size_t len;
- int err = 0;
- printk(KERN_INFO PFX "%s, ver %s\n", DRV_DESCRIPTION, DRV_VERSION);
- /* Create debugfs entries for fnic */
- err = fnic_debugfs_init();
- if (err < 0) {
- printk(KERN_ERR PFX "Failed to create fnic directory "
- "for tracing and stats logging\n");
- fnic_debugfs_terminate();
- }
- /* Allocate memory for trace buffer */
- err = fnic_trace_buf_init();
- if (err < 0) {
- printk(KERN_ERR PFX
- "Trace buffer initialization Failed. "
- "Fnic Tracing utility is disabled\n");
- fnic_trace_free();
- }
- /* Allocate memory for fc trace buffer */
- err = fnic_fc_trace_init();
- if (err < 0) {
- printk(KERN_ERR PFX "FC trace buffer initialization Failed "
- "FC frame tracing utility is disabled\n");
- fnic_fc_trace_free();
- }
- /* Create a cache for allocation of default size sgls */
- len = sizeof(struct fnic_dflt_sgl_list);
- fnic_sgl_cache[FNIC_SGL_CACHE_DFLT] = kmem_cache_create
- ("fnic_sgl_dflt", len + FNIC_SG_DESC_ALIGN, FNIC_SG_DESC_ALIGN,
- SLAB_HWCACHE_ALIGN,
- NULL);
- if (!fnic_sgl_cache[FNIC_SGL_CACHE_DFLT]) {
- printk(KERN_ERR PFX "failed to create fnic dflt sgl slab\n");
- err = -ENOMEM;
- goto err_create_fnic_sgl_slab_dflt;
- }
- /* Create a cache for allocation of max size sgls*/
- len = sizeof(struct fnic_sgl_list);
- fnic_sgl_cache[FNIC_SGL_CACHE_MAX] = kmem_cache_create
- ("fnic_sgl_max", len + FNIC_SG_DESC_ALIGN, FNIC_SG_DESC_ALIGN,
- SLAB_HWCACHE_ALIGN,
- NULL);
- if (!fnic_sgl_cache[FNIC_SGL_CACHE_MAX]) {
- printk(KERN_ERR PFX "failed to create fnic max sgl slab\n");
- err = -ENOMEM;
- goto err_create_fnic_sgl_slab_max;
- }
- /* Create a cache of io_req structs for use via mempool */
- fnic_io_req_cache = kmem_cache_create("fnic_io_req",
- sizeof(struct fnic_io_req),
- 0, SLAB_HWCACHE_ALIGN, NULL);
- if (!fnic_io_req_cache) {
- printk(KERN_ERR PFX "failed to create fnic io_req slab\n");
- err = -ENOMEM;
- goto err_create_fnic_ioreq_slab;
- }
- fnic_event_queue = create_singlethread_workqueue("fnic_event_wq");
- if (!fnic_event_queue) {
- printk(KERN_ERR PFX "fnic work queue create failed\n");
- err = -ENOMEM;
- goto err_create_fnic_workq;
- }
- spin_lock_init(&fnic_list_lock);
- INIT_LIST_HEAD(&fnic_list);
- fnic_fip_queue = create_singlethread_workqueue("fnic_fip_q");
- if (!fnic_fip_queue) {
- printk(KERN_ERR PFX "fnic FIP work queue create failed\n");
- err = -ENOMEM;
- goto err_create_fip_workq;
- }
- fnic_fc_transport = fc_attach_transport(&fnic_fc_functions);
- if (!fnic_fc_transport) {
- printk(KERN_ERR PFX "fc_attach_transport error\n");
- err = -ENOMEM;
- goto err_fc_transport;
- }
- /* register the driver with PCI system */
- err = pci_register_driver(&fnic_driver);
- if (err < 0) {
- printk(KERN_ERR PFX "pci register error\n");
- goto err_pci_register;
- }
- return err;
- err_pci_register:
- fc_release_transport(fnic_fc_transport);
- err_fc_transport:
- destroy_workqueue(fnic_fip_queue);
- err_create_fip_workq:
- destroy_workqueue(fnic_event_queue);
- err_create_fnic_workq:
- kmem_cache_destroy(fnic_io_req_cache);
- err_create_fnic_ioreq_slab:
- kmem_cache_destroy(fnic_sgl_cache[FNIC_SGL_CACHE_MAX]);
- err_create_fnic_sgl_slab_max:
- kmem_cache_destroy(fnic_sgl_cache[FNIC_SGL_CACHE_DFLT]);
- err_create_fnic_sgl_slab_dflt:
- fnic_trace_free();
- fnic_fc_trace_free();
- fnic_debugfs_terminate();
- return err;
- }
- static void __exit fnic_cleanup_module(void)
- {
- pci_unregister_driver(&fnic_driver);
- destroy_workqueue(fnic_event_queue);
- if (fnic_fip_queue) {
- flush_workqueue(fnic_fip_queue);
- destroy_workqueue(fnic_fip_queue);
- }
- kmem_cache_destroy(fnic_sgl_cache[FNIC_SGL_CACHE_MAX]);
- kmem_cache_destroy(fnic_sgl_cache[FNIC_SGL_CACHE_DFLT]);
- kmem_cache_destroy(fnic_io_req_cache);
- fc_release_transport(fnic_fc_transport);
- fnic_trace_free();
- fnic_fc_trace_free();
- fnic_debugfs_terminate();
- }
- module_init(fnic_init_module);
- module_exit(fnic_cleanup_module);
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