/* * 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 "vnic_dev.h" #include "vnic_intr.h" #include "vnic_stats.h" #include "fnic_io.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"); static struct libfc_function_template fnic_transport_template = { .frame_send = fnic_send, .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)); struct fc_lport *lp = shost_priv(sdev->host); struct fnic *fnic = lport_priv(lp); sdev->tagged_supported = 1; if (!rport || fc_remote_port_chkready(rport)) return -ENXIO; scsi_activate_tcq(sdev, FNIC_DFLT_QUEUE_DEPTH); rport->dev_loss_tmo = fnic->config.port_down_timeout / 1000; 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 = fc_change_queue_type, .this_id = -1, .cmd_per_lun = 3, .can_queue = FNIC_MAX_IO_REQ, .use_clustering = ENABLE_CLUSTERING, .sg_tablesize = FNIC_MAX_SG_DESC_CNT, .max_sectors = 0xffff, .shost_attrs = fnic_attrs, }; 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 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, .issue_fc_host_lip = fnic_reset, .get_fc_host_stats = fnic_get_stats, .dd_fcrport_size = sizeof(struct fc_rport_libfc_priv), .terminate_rport_io = fnic_terminate_rport_io, }; 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 - lp->boot_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; } 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_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; err = start(vdev, arg); if (err) return err; /* Wait for func to complete...2 seconds max */ time = jiffies + (HZ * 2); do { err = finished(vdev, &done); if (err) return err; if (done) return 0; schedule_timeout_uninterruptible(HZ / 10); } while (time_after(time, jiffies)); return -ETIMEDOUT; } static int fnic_cleanup(struct fnic *fnic) { unsigned int i; int err; unsigned long flags; struct fc_frame *flogi = NULL; struct fc_frame *flogi_resp = NULL; 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]); /* * Remove cached flogi and flogi resp frames if any * These frames are not in any queue, and therefore queue * cleanup does not clean them. So clean them explicitly */ spin_lock_irqsave(&fnic->fnic_lock, flags); flogi = fnic->flogi; fnic->flogi = NULL; flogi_resp = fnic->flogi_resp; fnic->flogi_resp = NULL; spin_unlock_irqrestore(&fnic->fnic_lock, flags); if (flogi) dev_kfree_skb(fp_skb(flogi)); if (flogi_resp) dev_kfree_skb(fp_skb(flogi_resp)); 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); } /* * Allocate element for mempools requiring GFP_DMA flag. * Otherwise, checks in kmem_flagcheck() hit BUG_ON(). */ static void *fnic_alloc_slab_dma(gfp_t gfp_mask, void *pool_data) { struct kmem_cache *mem = pool_data; return kmem_cache_alloc(mem, gfp_mask | GFP_ATOMIC | GFP_DMA); } static int __devinit 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; snprintf(fnic->name, sizeof(fnic->name) - 1, "%s%d", DRV_NAME, host->host_no); host->transportt = fnic_fc_transport; err = scsi_init_shared_tag_map(host, FNIC_MAX_IO_REQ); if (err) { shost_printk(KERN_ERR, fnic->lport->host, "Unable to alloc shared tag map\n"); goto err_out_free_hba; } /* 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 40-bit first, and * fail to 32-bit. */ err = pci_set_dma_mask(pdev, DMA_BIT_MASK(40)); 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(40)); if (err) { shost_printk(KERN_ERR, fnic->lport->host, "Unable to obtain 40-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->mac_addr); if (err) { shost_printk(KERN_ERR, fnic->lport->host, "vNIC get MAC addr failed \n"); goto err_out_dev_close; } /* 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; } host->max_lun = fnic->config.luns_per_tgt; host->max_id = FNIC_MAX_FCP_TARGET; host->max_cmd_len = FNIC_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(2, fnic_alloc_slab_dma, mempool_free_slab, 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(2, fnic_alloc_slab_dma, mempool_free_slab, 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; fnic->flogi_oxid = FC_XID_UNKNOWN; fnic->flogi = NULL; fnic->flogi_resp = NULL; fnic->state = FNIC_IN_FC_MODE; /* 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->tt = fnic_transport_template; 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); fc_lport_init(lp); fc_exch_init(lp); fc_elsct_init(lp); fc_rport_init(lp); fc_disc_init(lp); 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_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; 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); /* 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(fnic->lport->host); scsi_remove_host(fnic->lport->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: scsi_host_put(lp->host); err_out: return err; } static void __devexit fnic_remove(struct pci_dev *pdev) { struct fnic *fnic = pci_get_drvdata(pdev); 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); /* * 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); fc_lport_destroy(fnic->lport); /* * 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)); 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); pci_set_drvdata(pdev, NULL); scsi_host_put(fnic->lport->host); } static struct pci_driver fnic_driver = { .name = DRV_NAME, .id_table = fnic_id_table, .probe = fnic_probe, .remove = __devexit_p(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 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 | SLAB_CACHE_DMA, 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 | SLAB_CACHE_DMA, 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_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_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: return err; } static void __exit fnic_cleanup_module(void) { pci_unregister_driver(&fnic_driver); destroy_workqueue(fnic_event_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); } module_init(fnic_init_module); module_exit(fnic_cleanup_module);