diff options
Diffstat (limited to 'drivers/scsi/fnic/fnic_main.c')
| -rw-r--r-- | drivers/scsi/fnic/fnic_main.c | 942 |
1 files changed, 942 insertions, 0 deletions
diff --git a/drivers/scsi/fnic/fnic_main.c b/drivers/scsi/fnic/fnic_main.c new file mode 100644 index 00000000000..32ef6b87d89 --- /dev/null +++ b/drivers/scsi/fnic/fnic_main.c @@ -0,0 +1,942 @@ +/* + * 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/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 <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.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"); + + +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 + */ + host = scsi_host_alloc(&fnic_host_template, + sizeof(struct fc_lport) + sizeof(struct fnic)); + if (!host) { + printk(KERN_ERR PFX "Unable to alloc SCSI host\n"); + err = -ENOMEM; + goto err_out; + } + lp = shost_priv(host); + lp->host = 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_40BIT_MASK); + if (err) { + err = pci_set_dma_mask(pdev, DMA_32BIT_MASK); + 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_32BIT_MASK); + 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_40BIT_MASK); + 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; + + 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_request_intr(fnic); + if (err) { + shost_printk(KERN_ERR, fnic->lport->host, + "Unable to request irq.\n"); + goto err_out_clear_intr; + } + + 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_free_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->emp = fc_exch_mgr_alloc(lp, FC_CLASS_3, + FCPIO_HOST_EXCH_RANGE_START, + FCPIO_HOST_EXCH_RANGE_END); + if (!lp->emp) { + err = -ENOMEM; + goto err_out_remove_scsi_host; + } + + lp->max_retry_count = fnic->config.flogi_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_exch_init(lp); + fc_lport_init(lp); + fc_elsct_init(lp); + fc_rport_init(lp); + fc_disc_init(lp); + + 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); + 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->emp); +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_free_intr: + fnic_free_intr(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->emp); + vnic_dev_notify_unset(fnic->vdev); + fnic_free_vnic_resources(fnic); + fnic_free_intr(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); + |