959 lines
26 KiB
C
959 lines
26 KiB
C
/*
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* Copyright 2008 Cisco Systems, Inc. All rights reserved.
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* Copyright 2007 Nuova Systems, Inc. All rights reserved.
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*
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* This program is free software; you may redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; version 2 of the License.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
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* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
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* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
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* NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
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* BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
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* ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
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* CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
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* SOFTWARE.
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*/
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#include <linux/module.h>
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#include <linux/mempool.h>
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#include <linux/string.h>
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#include <linux/slab.h>
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#include <linux/errno.h>
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#include <linux/init.h>
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#include <linux/pci.h>
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#include <linux/skbuff.h>
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#include <linux/interrupt.h>
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#include <linux/spinlock.h>
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#include <linux/workqueue.h>
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#include <linux/if_ether.h>
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#include <scsi/fc/fc_fip.h>
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#include <scsi/scsi_host.h>
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#include <scsi/scsi_transport.h>
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#include <scsi/scsi_transport_fc.h>
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#include <scsi/scsi_tcq.h>
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#include <scsi/libfc.h>
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#include <scsi/fc_frame.h>
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#include "vnic_dev.h"
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#include "vnic_intr.h"
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#include "vnic_stats.h"
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#include "fnic_io.h"
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#include "fnic.h"
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#define PCI_DEVICE_ID_CISCO_FNIC 0x0045
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/* Timer to poll notification area for events. Used for MSI interrupts */
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#define FNIC_NOTIFY_TIMER_PERIOD (2 * HZ)
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static struct kmem_cache *fnic_sgl_cache[FNIC_SGL_NUM_CACHES];
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static struct kmem_cache *fnic_io_req_cache;
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LIST_HEAD(fnic_list);
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DEFINE_SPINLOCK(fnic_list_lock);
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/* Supported devices by fnic module */
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static struct pci_device_id fnic_id_table[] = {
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{ PCI_DEVICE(PCI_VENDOR_ID_CISCO, PCI_DEVICE_ID_CISCO_FNIC) },
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{ 0, }
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};
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MODULE_DESCRIPTION(DRV_DESCRIPTION);
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MODULE_AUTHOR("Abhijeet Joglekar <abjoglek@cisco.com>, "
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"Joseph R. Eykholt <jeykholt@cisco.com>");
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MODULE_LICENSE("GPL v2");
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MODULE_VERSION(DRV_VERSION);
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MODULE_DEVICE_TABLE(pci, fnic_id_table);
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unsigned int fnic_log_level;
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module_param(fnic_log_level, int, S_IRUGO|S_IWUSR);
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MODULE_PARM_DESC(fnic_log_level, "bit mask of fnic logging levels");
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static struct libfc_function_template fnic_transport_template = {
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.frame_send = fnic_send,
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.lport_set_port_id = fnic_set_port_id,
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.fcp_abort_io = fnic_empty_scsi_cleanup,
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.fcp_cleanup = fnic_empty_scsi_cleanup,
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.exch_mgr_reset = fnic_exch_mgr_reset
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};
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static int fnic_slave_alloc(struct scsi_device *sdev)
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{
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struct fc_rport *rport = starget_to_rport(scsi_target(sdev));
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struct fc_lport *lp = shost_priv(sdev->host);
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struct fnic *fnic = lport_priv(lp);
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sdev->tagged_supported = 1;
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if (!rport || fc_remote_port_chkready(rport))
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return -ENXIO;
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scsi_activate_tcq(sdev, FNIC_DFLT_QUEUE_DEPTH);
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rport->dev_loss_tmo = fnic->config.port_down_timeout / 1000;
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return 0;
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}
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static struct scsi_host_template fnic_host_template = {
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.module = THIS_MODULE,
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.name = DRV_NAME,
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.queuecommand = fnic_queuecommand,
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.eh_abort_handler = fnic_abort_cmd,
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.eh_device_reset_handler = fnic_device_reset,
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.eh_host_reset_handler = fnic_host_reset,
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.slave_alloc = fnic_slave_alloc,
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.change_queue_depth = fc_change_queue_depth,
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.change_queue_type = fc_change_queue_type,
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.this_id = -1,
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.cmd_per_lun = 3,
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.can_queue = FNIC_MAX_IO_REQ,
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.use_clustering = ENABLE_CLUSTERING,
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.sg_tablesize = FNIC_MAX_SG_DESC_CNT,
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.max_sectors = 0xffff,
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.shost_attrs = fnic_attrs,
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};
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static void fnic_get_host_speed(struct Scsi_Host *shost);
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static struct scsi_transport_template *fnic_fc_transport;
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static struct fc_host_statistics *fnic_get_stats(struct Scsi_Host *);
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static struct fc_function_template fnic_fc_functions = {
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.show_host_node_name = 1,
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.show_host_port_name = 1,
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.show_host_supported_classes = 1,
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.show_host_supported_fc4s = 1,
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.show_host_active_fc4s = 1,
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.show_host_maxframe_size = 1,
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.show_host_port_id = 1,
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.show_host_supported_speeds = 1,
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.get_host_speed = fnic_get_host_speed,
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.show_host_speed = 1,
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.show_host_port_type = 1,
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.get_host_port_state = fc_get_host_port_state,
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.show_host_port_state = 1,
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.show_host_symbolic_name = 1,
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.show_rport_maxframe_size = 1,
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.show_rport_supported_classes = 1,
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.show_host_fabric_name = 1,
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.show_starget_node_name = 1,
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.show_starget_port_name = 1,
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.show_starget_port_id = 1,
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.show_rport_dev_loss_tmo = 1,
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.issue_fc_host_lip = fnic_reset,
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.get_fc_host_stats = fnic_get_stats,
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.dd_fcrport_size = sizeof(struct fc_rport_libfc_priv),
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.terminate_rport_io = fnic_terminate_rport_io,
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.bsg_request = fc_lport_bsg_request,
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};
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static void fnic_get_host_speed(struct Scsi_Host *shost)
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{
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struct fc_lport *lp = shost_priv(shost);
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struct fnic *fnic = lport_priv(lp);
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u32 port_speed = vnic_dev_port_speed(fnic->vdev);
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/* Add in other values as they get defined in fw */
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switch (port_speed) {
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case 10000:
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fc_host_speed(shost) = FC_PORTSPEED_10GBIT;
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break;
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default:
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fc_host_speed(shost) = FC_PORTSPEED_10GBIT;
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break;
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}
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}
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static struct fc_host_statistics *fnic_get_stats(struct Scsi_Host *host)
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{
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int ret;
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struct fc_lport *lp = shost_priv(host);
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struct fnic *fnic = lport_priv(lp);
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struct fc_host_statistics *stats = &lp->host_stats;
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struct vnic_stats *vs;
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unsigned long flags;
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if (time_before(jiffies, fnic->stats_time + HZ / FNIC_STATS_RATE_LIMIT))
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return stats;
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fnic->stats_time = jiffies;
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spin_lock_irqsave(&fnic->fnic_lock, flags);
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ret = vnic_dev_stats_dump(fnic->vdev, &fnic->stats);
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spin_unlock_irqrestore(&fnic->fnic_lock, flags);
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if (ret) {
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FNIC_MAIN_DBG(KERN_DEBUG, fnic->lport->host,
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"fnic: Get vnic stats failed"
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" 0x%x", ret);
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return stats;
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}
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vs = fnic->stats;
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stats->tx_frames = vs->tx.tx_unicast_frames_ok;
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stats->tx_words = vs->tx.tx_unicast_bytes_ok / 4;
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stats->rx_frames = vs->rx.rx_unicast_frames_ok;
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stats->rx_words = vs->rx.rx_unicast_bytes_ok / 4;
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stats->error_frames = vs->tx.tx_errors + vs->rx.rx_errors;
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stats->dumped_frames = vs->tx.tx_drops + vs->rx.rx_drop;
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stats->invalid_crc_count = vs->rx.rx_crc_errors;
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stats->seconds_since_last_reset = (jiffies - lp->boot_time) / HZ;
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stats->fcp_input_megabytes = div_u64(fnic->fcp_input_bytes, 1000000);
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stats->fcp_output_megabytes = div_u64(fnic->fcp_output_bytes, 1000000);
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return stats;
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}
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void fnic_log_q_error(struct fnic *fnic)
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{
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unsigned int i;
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u32 error_status;
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for (i = 0; i < fnic->raw_wq_count; i++) {
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error_status = ioread32(&fnic->wq[i].ctrl->error_status);
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if (error_status)
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shost_printk(KERN_ERR, fnic->lport->host,
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"WQ[%d] error_status"
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" %d\n", i, error_status);
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}
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for (i = 0; i < fnic->rq_count; i++) {
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error_status = ioread32(&fnic->rq[i].ctrl->error_status);
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if (error_status)
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shost_printk(KERN_ERR, fnic->lport->host,
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"RQ[%d] error_status"
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" %d\n", i, error_status);
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}
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for (i = 0; i < fnic->wq_copy_count; i++) {
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error_status = ioread32(&fnic->wq_copy[i].ctrl->error_status);
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if (error_status)
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shost_printk(KERN_ERR, fnic->lport->host,
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"CWQ[%d] error_status"
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" %d\n", i, error_status);
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}
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}
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void fnic_handle_link_event(struct fnic *fnic)
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{
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unsigned long flags;
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spin_lock_irqsave(&fnic->fnic_lock, flags);
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if (fnic->stop_rx_link_events) {
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spin_unlock_irqrestore(&fnic->fnic_lock, flags);
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return;
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}
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spin_unlock_irqrestore(&fnic->fnic_lock, flags);
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queue_work(fnic_event_queue, &fnic->link_work);
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}
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static int fnic_notify_set(struct fnic *fnic)
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{
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int err;
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switch (vnic_dev_get_intr_mode(fnic->vdev)) {
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case VNIC_DEV_INTR_MODE_INTX:
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err = vnic_dev_notify_set(fnic->vdev, FNIC_INTX_NOTIFY);
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break;
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case VNIC_DEV_INTR_MODE_MSI:
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err = vnic_dev_notify_set(fnic->vdev, -1);
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break;
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case VNIC_DEV_INTR_MODE_MSIX:
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err = vnic_dev_notify_set(fnic->vdev, FNIC_MSIX_ERR_NOTIFY);
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break;
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default:
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shost_printk(KERN_ERR, fnic->lport->host,
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"Interrupt mode should be set up"
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" before devcmd notify set %d\n",
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vnic_dev_get_intr_mode(fnic->vdev));
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err = -1;
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break;
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}
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return err;
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}
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static void fnic_notify_timer(unsigned long data)
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{
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struct fnic *fnic = (struct fnic *)data;
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fnic_handle_link_event(fnic);
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mod_timer(&fnic->notify_timer,
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round_jiffies(jiffies + FNIC_NOTIFY_TIMER_PERIOD));
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}
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static void fnic_notify_timer_start(struct fnic *fnic)
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{
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switch (vnic_dev_get_intr_mode(fnic->vdev)) {
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case VNIC_DEV_INTR_MODE_MSI:
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/*
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* Schedule first timeout immediately. The driver is
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* initiatialized and ready to look for link up notification
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*/
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mod_timer(&fnic->notify_timer, jiffies);
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break;
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default:
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/* Using intr for notification for INTx/MSI-X */
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break;
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};
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}
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static int fnic_dev_wait(struct vnic_dev *vdev,
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int (*start)(struct vnic_dev *, int),
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int (*finished)(struct vnic_dev *, int *),
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int arg)
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{
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unsigned long time;
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int done;
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int err;
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err = start(vdev, arg);
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if (err)
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return err;
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/* Wait for func to complete...2 seconds max */
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time = jiffies + (HZ * 2);
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do {
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err = finished(vdev, &done);
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if (err)
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return err;
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if (done)
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return 0;
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schedule_timeout_uninterruptible(HZ / 10);
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} while (time_after(time, jiffies));
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return -ETIMEDOUT;
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}
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static int fnic_cleanup(struct fnic *fnic)
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{
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unsigned int i;
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int err;
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vnic_dev_disable(fnic->vdev);
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for (i = 0; i < fnic->intr_count; i++)
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vnic_intr_mask(&fnic->intr[i]);
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for (i = 0; i < fnic->rq_count; i++) {
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err = vnic_rq_disable(&fnic->rq[i]);
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if (err)
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return err;
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}
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for (i = 0; i < fnic->raw_wq_count; i++) {
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err = vnic_wq_disable(&fnic->wq[i]);
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if (err)
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return err;
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}
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for (i = 0; i < fnic->wq_copy_count; i++) {
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err = vnic_wq_copy_disable(&fnic->wq_copy[i]);
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if (err)
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return err;
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}
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/* Clean up completed IOs and FCS frames */
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fnic_wq_copy_cmpl_handler(fnic, -1);
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fnic_wq_cmpl_handler(fnic, -1);
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fnic_rq_cmpl_handler(fnic, -1);
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/* Clean up the IOs and FCS frames that have not completed */
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for (i = 0; i < fnic->raw_wq_count; i++)
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vnic_wq_clean(&fnic->wq[i], fnic_free_wq_buf);
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for (i = 0; i < fnic->rq_count; i++)
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vnic_rq_clean(&fnic->rq[i], fnic_free_rq_buf);
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for (i = 0; i < fnic->wq_copy_count; i++)
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vnic_wq_copy_clean(&fnic->wq_copy[i],
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fnic_wq_copy_cleanup_handler);
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for (i = 0; i < fnic->cq_count; i++)
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vnic_cq_clean(&fnic->cq[i]);
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for (i = 0; i < fnic->intr_count; i++)
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vnic_intr_clean(&fnic->intr[i]);
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mempool_destroy(fnic->io_req_pool);
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for (i = 0; i < FNIC_SGL_NUM_CACHES; i++)
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mempool_destroy(fnic->io_sgl_pool[i]);
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return 0;
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}
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static void fnic_iounmap(struct fnic *fnic)
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{
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if (fnic->bar0.vaddr)
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iounmap(fnic->bar0.vaddr);
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}
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/*
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* Allocate element for mempools requiring GFP_DMA flag.
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* Otherwise, checks in kmem_flagcheck() hit BUG_ON().
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*/
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static void *fnic_alloc_slab_dma(gfp_t gfp_mask, void *pool_data)
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{
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struct kmem_cache *mem = pool_data;
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return kmem_cache_alloc(mem, gfp_mask | GFP_ATOMIC | GFP_DMA);
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}
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/**
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* fnic_get_mac() - get assigned data MAC address for FIP code.
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* @lport: local port.
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*/
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static u8 *fnic_get_mac(struct fc_lport *lport)
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{
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struct fnic *fnic = lport_priv(lport);
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return fnic->data_src_addr;
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}
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static int __devinit fnic_probe(struct pci_dev *pdev,
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const struct pci_device_id *ent)
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{
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struct Scsi_Host *host;
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struct fc_lport *lp;
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struct fnic *fnic;
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mempool_t *pool;
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int err;
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int i;
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unsigned long flags;
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/*
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* Allocate SCSI Host and set up association between host,
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* local port, and fnic
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*/
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lp = libfc_host_alloc(&fnic_host_template, sizeof(struct fnic));
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if (!lp) {
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printk(KERN_ERR PFX "Unable to alloc libfc local port\n");
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err = -ENOMEM;
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goto err_out;
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}
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host = lp->host;
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fnic = lport_priv(lp);
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fnic->lport = lp;
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fnic->ctlr.lp = lp;
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snprintf(fnic->name, sizeof(fnic->name) - 1, "%s%d", DRV_NAME,
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host->host_no);
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host->transportt = fnic_fc_transport;
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err = scsi_init_shared_tag_map(host, FNIC_MAX_IO_REQ);
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if (err) {
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shost_printk(KERN_ERR, fnic->lport->host,
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"Unable to alloc shared tag map\n");
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goto err_out_free_hba;
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}
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/* Setup PCI resources */
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pci_set_drvdata(pdev, fnic);
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fnic->pdev = pdev;
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err = pci_enable_device(pdev);
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if (err) {
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shost_printk(KERN_ERR, fnic->lport->host,
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"Cannot enable PCI device, aborting.\n");
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goto err_out_free_hba;
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}
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err = pci_request_regions(pdev, DRV_NAME);
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if (err) {
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shost_printk(KERN_ERR, fnic->lport->host,
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"Cannot enable PCI resources, aborting\n");
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goto err_out_disable_device;
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}
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pci_set_master(pdev);
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/* Query PCI controller on system for DMA addressing
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* limitation for the device. Try 40-bit first, and
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* fail to 32-bit.
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*/
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err = pci_set_dma_mask(pdev, DMA_BIT_MASK(40));
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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->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;
|
|
}
|
|
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(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;
|
|
|
|
/* 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;
|
|
fcoe_ctlr_init(&fnic->ctlr);
|
|
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);
|
|
} else {
|
|
shost_printk(KERN_INFO, fnic->lport->host,
|
|
"firmware uses non-FIP mode\n");
|
|
fnic->ctlr.mode = FIP_ST_NON_FIP;
|
|
}
|
|
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_init_stats(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);
|
|
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:
|
|
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);
|
|
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);
|
|
|
|
/*
|
|
* 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);
|
|
|
|
/*
|
|
* 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);
|
|
pci_set_drvdata(pdev, NULL);
|
|
scsi_host_put(lp->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);
|
|
|