/* * 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 #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #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 , " "Joseph R. Eykholt "); 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_adjust_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 = fc_change_queue_depth, .change_queue_type = scsi_change_queue_type, .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, .use_blk_tags = 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; err = scsi_init_shared_tag_map(host, fnic->fnic_max_tag_id); if (err) { shost_printk(KERN_ERR, fnic->lport->host, "Unable to alloc shared tag map\n"); goto err_out_dev_close; } 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);