a1e0063d0c
If the command has timedout then the block layer has called blk_mark_rq_complete. If qla4xxx_cmd_wait is then called from qla4xxx_eh_host_reset, we will always fail, because if the driver calls scsi_done then the the block layer will fail at blk_complete_request's blk_mark_rq_complete call instead of calling the normal completion path including the function, blk_queue_end_tag, which releases the tag. Signed-off-by: Mike Christie <michaelc@cs.wisc.edu> Signed-off-by: Vikas Chaudhary <vikas.chaudhary@qlogic.com> Signed-off-by: James Bottomley <James.Bottomley@suse.de>
2579 lines
71 KiB
C
2579 lines
71 KiB
C
/*
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* QLogic iSCSI HBA Driver
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* Copyright (c) 2003-2006 QLogic Corporation
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*
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* See LICENSE.qla4xxx for copyright and licensing details.
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*/
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#include <linux/moduleparam.h>
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#include <linux/slab.h>
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#include <scsi/scsi_tcq.h>
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#include <scsi/scsicam.h>
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#include "ql4_def.h"
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#include "ql4_version.h"
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#include "ql4_glbl.h"
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#include "ql4_dbg.h"
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#include "ql4_inline.h"
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/*
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* Driver version
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*/
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static char qla4xxx_version_str[40];
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/*
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* SRB allocation cache
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*/
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static struct kmem_cache *srb_cachep;
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/*
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* Module parameter information and variables
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*/
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int ql4xdiscoverywait = 60;
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module_param(ql4xdiscoverywait, int, S_IRUGO | S_IWUSR);
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MODULE_PARM_DESC(ql4xdiscoverywait, "Discovery wait time");
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int ql4xdontresethba = 0;
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module_param(ql4xdontresethba, int, S_IRUGO | S_IWUSR);
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MODULE_PARM_DESC(ql4xdontresethba,
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"Don't reset the HBA for driver recovery \n"
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" 0 - It will reset HBA (Default)\n"
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" 1 - It will NOT reset HBA");
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int ql4xextended_error_logging = 0; /* 0 = off, 1 = log errors */
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module_param(ql4xextended_error_logging, int, S_IRUGO | S_IWUSR);
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MODULE_PARM_DESC(ql4xextended_error_logging,
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"Option to enable extended error logging, "
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"Default is 0 - no logging, 1 - debug logging");
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int ql4xenablemsix = 1;
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module_param(ql4xenablemsix, int, S_IRUGO|S_IWUSR);
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MODULE_PARM_DESC(ql4xenablemsix,
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"Set to enable MSI or MSI-X interrupt mechanism.\n"
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" 0 = enable INTx interrupt mechanism.\n"
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" 1 = enable MSI-X interrupt mechanism (Default).\n"
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" 2 = enable MSI interrupt mechanism.");
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#define QL4_DEF_QDEPTH 32
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/*
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* SCSI host template entry points
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*/
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static void qla4xxx_config_dma_addressing(struct scsi_qla_host *ha);
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/*
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* iSCSI template entry points
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*/
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static int qla4xxx_tgt_dscvr(struct Scsi_Host *shost,
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enum iscsi_tgt_dscvr type, uint32_t enable,
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struct sockaddr *dst_addr);
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static int qla4xxx_conn_get_param(struct iscsi_cls_conn *conn,
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enum iscsi_param param, char *buf);
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static int qla4xxx_sess_get_param(struct iscsi_cls_session *sess,
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enum iscsi_param param, char *buf);
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static int qla4xxx_host_get_param(struct Scsi_Host *shost,
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enum iscsi_host_param param, char *buf);
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static void qla4xxx_recovery_timedout(struct iscsi_cls_session *session);
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static enum blk_eh_timer_return qla4xxx_eh_cmd_timed_out(struct scsi_cmnd *sc);
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/*
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* SCSI host template entry points
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*/
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static int qla4xxx_queuecommand(struct scsi_cmnd *cmd,
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void (*done) (struct scsi_cmnd *));
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static int qla4xxx_eh_abort(struct scsi_cmnd *cmd);
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static int qla4xxx_eh_device_reset(struct scsi_cmnd *cmd);
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static int qla4xxx_eh_target_reset(struct scsi_cmnd *cmd);
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static int qla4xxx_eh_host_reset(struct scsi_cmnd *cmd);
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static int qla4xxx_slave_alloc(struct scsi_device *device);
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static int qla4xxx_slave_configure(struct scsi_device *device);
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static void qla4xxx_slave_destroy(struct scsi_device *sdev);
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static void qla4xxx_scan_start(struct Scsi_Host *shost);
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static struct qla4_8xxx_legacy_intr_set legacy_intr[] =
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QLA82XX_LEGACY_INTR_CONFIG;
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static struct scsi_host_template qla4xxx_driver_template = {
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.module = THIS_MODULE,
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.name = DRIVER_NAME,
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.proc_name = DRIVER_NAME,
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.queuecommand = qla4xxx_queuecommand,
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.eh_abort_handler = qla4xxx_eh_abort,
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.eh_device_reset_handler = qla4xxx_eh_device_reset,
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.eh_target_reset_handler = qla4xxx_eh_target_reset,
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.eh_host_reset_handler = qla4xxx_eh_host_reset,
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.eh_timed_out = qla4xxx_eh_cmd_timed_out,
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.slave_configure = qla4xxx_slave_configure,
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.slave_alloc = qla4xxx_slave_alloc,
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.slave_destroy = qla4xxx_slave_destroy,
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.scan_finished = iscsi_scan_finished,
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.scan_start = qla4xxx_scan_start,
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.this_id = -1,
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.cmd_per_lun = 3,
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.use_clustering = ENABLE_CLUSTERING,
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.sg_tablesize = SG_ALL,
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.max_sectors = 0xFFFF,
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};
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static struct iscsi_transport qla4xxx_iscsi_transport = {
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.owner = THIS_MODULE,
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.name = DRIVER_NAME,
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.caps = CAP_FW_DB | CAP_SENDTARGETS_OFFLOAD |
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CAP_DATA_PATH_OFFLOAD,
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.param_mask = ISCSI_CONN_PORT | ISCSI_CONN_ADDRESS |
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ISCSI_TARGET_NAME | ISCSI_TPGT |
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ISCSI_TARGET_ALIAS,
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.host_param_mask = ISCSI_HOST_HWADDRESS |
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ISCSI_HOST_IPADDRESS |
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ISCSI_HOST_INITIATOR_NAME,
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.tgt_dscvr = qla4xxx_tgt_dscvr,
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.get_conn_param = qla4xxx_conn_get_param,
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.get_session_param = qla4xxx_sess_get_param,
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.get_host_param = qla4xxx_host_get_param,
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.session_recovery_timedout = qla4xxx_recovery_timedout,
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};
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static struct scsi_transport_template *qla4xxx_scsi_transport;
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static enum blk_eh_timer_return qla4xxx_eh_cmd_timed_out(struct scsi_cmnd *sc)
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{
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struct iscsi_cls_session *session;
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struct ddb_entry *ddb_entry;
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session = starget_to_session(scsi_target(sc->device));
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ddb_entry = session->dd_data;
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/* if we are not logged in then the LLD is going to clean up the cmd */
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if (atomic_read(&ddb_entry->state) != DDB_STATE_ONLINE)
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return BLK_EH_RESET_TIMER;
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else
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return BLK_EH_NOT_HANDLED;
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}
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static void qla4xxx_recovery_timedout(struct iscsi_cls_session *session)
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{
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struct ddb_entry *ddb_entry = session->dd_data;
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struct scsi_qla_host *ha = ddb_entry->ha;
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if (atomic_read(&ddb_entry->state) != DDB_STATE_ONLINE) {
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atomic_set(&ddb_entry->state, DDB_STATE_DEAD);
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DEBUG2(printk("scsi%ld: %s: ddb [%d] session recovery timeout "
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"of (%d) secs exhausted, marking device DEAD.\n",
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ha->host_no, __func__, ddb_entry->fw_ddb_index,
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QL4_SESS_RECOVERY_TMO));
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}
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}
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static int qla4xxx_host_get_param(struct Scsi_Host *shost,
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enum iscsi_host_param param, char *buf)
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{
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struct scsi_qla_host *ha = to_qla_host(shost);
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int len;
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switch (param) {
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case ISCSI_HOST_PARAM_HWADDRESS:
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len = sysfs_format_mac(buf, ha->my_mac, MAC_ADDR_LEN);
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break;
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case ISCSI_HOST_PARAM_IPADDRESS:
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len = sprintf(buf, "%d.%d.%d.%d\n", ha->ip_address[0],
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ha->ip_address[1], ha->ip_address[2],
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ha->ip_address[3]);
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break;
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case ISCSI_HOST_PARAM_INITIATOR_NAME:
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len = sprintf(buf, "%s\n", ha->name_string);
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break;
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default:
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return -ENOSYS;
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}
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return len;
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}
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static int qla4xxx_sess_get_param(struct iscsi_cls_session *sess,
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enum iscsi_param param, char *buf)
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{
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struct ddb_entry *ddb_entry = sess->dd_data;
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int len;
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switch (param) {
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case ISCSI_PARAM_TARGET_NAME:
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len = snprintf(buf, PAGE_SIZE - 1, "%s\n",
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ddb_entry->iscsi_name);
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break;
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case ISCSI_PARAM_TPGT:
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len = sprintf(buf, "%u\n", ddb_entry->tpgt);
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break;
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case ISCSI_PARAM_TARGET_ALIAS:
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len = snprintf(buf, PAGE_SIZE - 1, "%s\n",
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ddb_entry->iscsi_alias);
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break;
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default:
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return -ENOSYS;
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}
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return len;
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}
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static int qla4xxx_conn_get_param(struct iscsi_cls_conn *conn,
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enum iscsi_param param, char *buf)
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{
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struct iscsi_cls_session *session;
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struct ddb_entry *ddb_entry;
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int len;
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session = iscsi_dev_to_session(conn->dev.parent);
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ddb_entry = session->dd_data;
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switch (param) {
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case ISCSI_PARAM_CONN_PORT:
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len = sprintf(buf, "%hu\n", ddb_entry->port);
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break;
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case ISCSI_PARAM_CONN_ADDRESS:
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/* TODO: what are the ipv6 bits */
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len = sprintf(buf, "%pI4\n", &ddb_entry->ip_addr);
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break;
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default:
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return -ENOSYS;
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}
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return len;
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}
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static int qla4xxx_tgt_dscvr(struct Scsi_Host *shost,
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enum iscsi_tgt_dscvr type, uint32_t enable,
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struct sockaddr *dst_addr)
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{
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struct scsi_qla_host *ha;
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struct sockaddr_in *addr;
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struct sockaddr_in6 *addr6;
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int ret = 0;
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ha = (struct scsi_qla_host *) shost->hostdata;
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switch (type) {
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case ISCSI_TGT_DSCVR_SEND_TARGETS:
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if (dst_addr->sa_family == AF_INET) {
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addr = (struct sockaddr_in *)dst_addr;
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if (qla4xxx_send_tgts(ha, (char *)&addr->sin_addr,
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addr->sin_port) != QLA_SUCCESS)
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ret = -EIO;
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} else if (dst_addr->sa_family == AF_INET6) {
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/*
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* TODO: fix qla4xxx_send_tgts
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*/
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addr6 = (struct sockaddr_in6 *)dst_addr;
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if (qla4xxx_send_tgts(ha, (char *)&addr6->sin6_addr,
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addr6->sin6_port) != QLA_SUCCESS)
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ret = -EIO;
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} else
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ret = -ENOSYS;
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break;
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default:
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ret = -ENOSYS;
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}
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return ret;
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}
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void qla4xxx_destroy_sess(struct ddb_entry *ddb_entry)
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{
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if (!ddb_entry->sess)
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return;
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if (ddb_entry->conn) {
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atomic_set(&ddb_entry->state, DDB_STATE_DEAD);
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iscsi_remove_session(ddb_entry->sess);
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}
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iscsi_free_session(ddb_entry->sess);
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}
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int qla4xxx_add_sess(struct ddb_entry *ddb_entry)
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{
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int err;
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ddb_entry->sess->recovery_tmo = QL4_SESS_RECOVERY_TMO;
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err = iscsi_add_session(ddb_entry->sess, ddb_entry->fw_ddb_index);
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if (err) {
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DEBUG2(printk(KERN_ERR "Could not add session.\n"));
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return err;
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}
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ddb_entry->conn = iscsi_create_conn(ddb_entry->sess, 0, 0);
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if (!ddb_entry->conn) {
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iscsi_remove_session(ddb_entry->sess);
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DEBUG2(printk(KERN_ERR "Could not add connection.\n"));
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return -ENOMEM;
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}
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/* finally ready to go */
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iscsi_unblock_session(ddb_entry->sess);
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return 0;
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}
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struct ddb_entry *qla4xxx_alloc_sess(struct scsi_qla_host *ha)
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{
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struct ddb_entry *ddb_entry;
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struct iscsi_cls_session *sess;
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sess = iscsi_alloc_session(ha->host, &qla4xxx_iscsi_transport,
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sizeof(struct ddb_entry));
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if (!sess)
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return NULL;
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ddb_entry = sess->dd_data;
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memset(ddb_entry, 0, sizeof(*ddb_entry));
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ddb_entry->ha = ha;
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ddb_entry->sess = sess;
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return ddb_entry;
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}
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static void qla4xxx_scan_start(struct Scsi_Host *shost)
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{
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struct scsi_qla_host *ha = shost_priv(shost);
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struct ddb_entry *ddb_entry, *ddbtemp;
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/* finish setup of sessions that were already setup in firmware */
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list_for_each_entry_safe(ddb_entry, ddbtemp, &ha->ddb_list, list) {
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if (ddb_entry->fw_ddb_device_state == DDB_DS_SESSION_ACTIVE)
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qla4xxx_add_sess(ddb_entry);
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}
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}
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/*
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* Timer routines
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*/
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static void qla4xxx_start_timer(struct scsi_qla_host *ha, void *func,
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unsigned long interval)
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{
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DEBUG(printk("scsi: %s: Starting timer thread for adapter %d\n",
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__func__, ha->host->host_no));
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init_timer(&ha->timer);
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ha->timer.expires = jiffies + interval * HZ;
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ha->timer.data = (unsigned long)ha;
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ha->timer.function = (void (*)(unsigned long))func;
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add_timer(&ha->timer);
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ha->timer_active = 1;
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}
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static void qla4xxx_stop_timer(struct scsi_qla_host *ha)
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{
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del_timer_sync(&ha->timer);
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ha->timer_active = 0;
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}
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/***
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* qla4xxx_mark_device_missing - mark a device as missing.
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* @ha: Pointer to host adapter structure.
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* @ddb_entry: Pointer to device database entry
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*
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* This routine marks a device missing and close connection.
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**/
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void qla4xxx_mark_device_missing(struct scsi_qla_host *ha,
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struct ddb_entry *ddb_entry)
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{
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if ((atomic_read(&ddb_entry->state) != DDB_STATE_DEAD)) {
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atomic_set(&ddb_entry->state, DDB_STATE_MISSING);
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DEBUG2(printk("scsi%ld: ddb [%d] marked MISSING\n",
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ha->host_no, ddb_entry->fw_ddb_index));
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} else
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DEBUG2(printk("scsi%ld: ddb [%d] DEAD\n", ha->host_no,
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ddb_entry->fw_ddb_index))
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iscsi_block_session(ddb_entry->sess);
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iscsi_conn_error_event(ddb_entry->conn, ISCSI_ERR_CONN_FAILED);
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}
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/**
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* qla4xxx_mark_all_devices_missing - mark all devices as missing.
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* @ha: Pointer to host adapter structure.
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*
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* This routine marks a device missing and resets the relogin retry count.
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**/
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void qla4xxx_mark_all_devices_missing(struct scsi_qla_host *ha)
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{
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struct ddb_entry *ddb_entry, *ddbtemp;
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list_for_each_entry_safe(ddb_entry, ddbtemp, &ha->ddb_list, list) {
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qla4xxx_mark_device_missing(ha, ddb_entry);
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}
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}
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static struct srb* qla4xxx_get_new_srb(struct scsi_qla_host *ha,
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struct ddb_entry *ddb_entry,
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struct scsi_cmnd *cmd,
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void (*done)(struct scsi_cmnd *))
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{
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struct srb *srb;
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srb = mempool_alloc(ha->srb_mempool, GFP_ATOMIC);
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if (!srb)
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return srb;
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kref_init(&srb->srb_ref);
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srb->ha = ha;
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srb->ddb = ddb_entry;
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srb->cmd = cmd;
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srb->flags = 0;
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CMD_SP(cmd) = (void *)srb;
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cmd->scsi_done = done;
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return srb;
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}
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static void qla4xxx_srb_free_dma(struct scsi_qla_host *ha, struct srb *srb)
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{
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struct scsi_cmnd *cmd = srb->cmd;
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if (srb->flags & SRB_DMA_VALID) {
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scsi_dma_unmap(cmd);
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srb->flags &= ~SRB_DMA_VALID;
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}
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CMD_SP(cmd) = NULL;
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}
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void qla4xxx_srb_compl(struct kref *ref)
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{
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struct srb *srb = container_of(ref, struct srb, srb_ref);
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struct scsi_cmnd *cmd = srb->cmd;
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struct scsi_qla_host *ha = srb->ha;
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qla4xxx_srb_free_dma(ha, srb);
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mempool_free(srb, ha->srb_mempool);
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cmd->scsi_done(cmd);
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}
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|
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/**
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* qla4xxx_queuecommand - scsi layer issues scsi command to driver.
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* @cmd: Pointer to Linux's SCSI command structure
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* @done_fn: Function that the driver calls to notify the SCSI mid-layer
|
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* that the command has been processed.
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*
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* Remarks:
|
|
* This routine is invoked by Linux to send a SCSI command to the driver.
|
|
* The mid-level driver tries to ensure that queuecommand never gets
|
|
* invoked concurrently with itself or the interrupt handler (although
|
|
* the interrupt handler may call this routine as part of request-
|
|
* completion handling). Unfortunely, it sometimes calls the scheduler
|
|
* in interrupt context which is a big NO! NO!.
|
|
**/
|
|
static int qla4xxx_queuecommand(struct scsi_cmnd *cmd,
|
|
void (*done)(struct scsi_cmnd *))
|
|
{
|
|
struct scsi_qla_host *ha = to_qla_host(cmd->device->host);
|
|
struct ddb_entry *ddb_entry = cmd->device->hostdata;
|
|
struct iscsi_cls_session *sess = ddb_entry->sess;
|
|
struct srb *srb;
|
|
int rval;
|
|
|
|
if (test_bit(AF_EEH_BUSY, &ha->flags)) {
|
|
if (test_bit(AF_PCI_CHANNEL_IO_PERM_FAILURE, &ha->flags))
|
|
cmd->result = DID_NO_CONNECT << 16;
|
|
else
|
|
cmd->result = DID_REQUEUE << 16;
|
|
goto qc_fail_command;
|
|
}
|
|
|
|
if (!sess) {
|
|
cmd->result = DID_IMM_RETRY << 16;
|
|
goto qc_fail_command;
|
|
}
|
|
|
|
rval = iscsi_session_chkready(sess);
|
|
if (rval) {
|
|
cmd->result = rval;
|
|
goto qc_fail_command;
|
|
}
|
|
|
|
if (atomic_read(&ddb_entry->state) != DDB_STATE_ONLINE) {
|
|
if (atomic_read(&ddb_entry->state) == DDB_STATE_DEAD) {
|
|
cmd->result = DID_NO_CONNECT << 16;
|
|
goto qc_fail_command;
|
|
}
|
|
return SCSI_MLQUEUE_TARGET_BUSY;
|
|
}
|
|
|
|
if (test_bit(DPC_RESET_HA_INTR, &ha->dpc_flags) ||
|
|
test_bit(DPC_RESET_ACTIVE, &ha->dpc_flags) ||
|
|
test_bit(DPC_RESET_HA, &ha->dpc_flags) ||
|
|
test_bit(DPC_HA_UNRECOVERABLE, &ha->dpc_flags) ||
|
|
test_bit(DPC_HA_NEED_QUIESCENT, &ha->dpc_flags) ||
|
|
!test_bit(AF_ONLINE, &ha->flags) ||
|
|
test_bit(DPC_RESET_HA_FW_CONTEXT, &ha->dpc_flags))
|
|
goto qc_host_busy;
|
|
|
|
spin_unlock_irq(ha->host->host_lock);
|
|
|
|
srb = qla4xxx_get_new_srb(ha, ddb_entry, cmd, done);
|
|
if (!srb)
|
|
goto qc_host_busy_lock;
|
|
|
|
rval = qla4xxx_send_command_to_isp(ha, srb);
|
|
if (rval != QLA_SUCCESS)
|
|
goto qc_host_busy_free_sp;
|
|
|
|
spin_lock_irq(ha->host->host_lock);
|
|
return 0;
|
|
|
|
qc_host_busy_free_sp:
|
|
qla4xxx_srb_free_dma(ha, srb);
|
|
mempool_free(srb, ha->srb_mempool);
|
|
|
|
qc_host_busy_lock:
|
|
spin_lock_irq(ha->host->host_lock);
|
|
|
|
qc_host_busy:
|
|
return SCSI_MLQUEUE_HOST_BUSY;
|
|
|
|
qc_fail_command:
|
|
done(cmd);
|
|
|
|
return 0;
|
|
}
|
|
|
|
/**
|
|
* qla4xxx_mem_free - frees memory allocated to adapter
|
|
* @ha: Pointer to host adapter structure.
|
|
*
|
|
* Frees memory previously allocated by qla4xxx_mem_alloc
|
|
**/
|
|
static void qla4xxx_mem_free(struct scsi_qla_host *ha)
|
|
{
|
|
if (ha->queues)
|
|
dma_free_coherent(&ha->pdev->dev, ha->queues_len, ha->queues,
|
|
ha->queues_dma);
|
|
|
|
ha->queues_len = 0;
|
|
ha->queues = NULL;
|
|
ha->queues_dma = 0;
|
|
ha->request_ring = NULL;
|
|
ha->request_dma = 0;
|
|
ha->response_ring = NULL;
|
|
ha->response_dma = 0;
|
|
ha->shadow_regs = NULL;
|
|
ha->shadow_regs_dma = 0;
|
|
|
|
/* Free srb pool. */
|
|
if (ha->srb_mempool)
|
|
mempool_destroy(ha->srb_mempool);
|
|
|
|
ha->srb_mempool = NULL;
|
|
|
|
/* release io space registers */
|
|
if (is_qla8022(ha)) {
|
|
if (ha->nx_pcibase)
|
|
iounmap(
|
|
(struct device_reg_82xx __iomem *)ha->nx_pcibase);
|
|
} else if (ha->reg)
|
|
iounmap(ha->reg);
|
|
pci_release_regions(ha->pdev);
|
|
}
|
|
|
|
/**
|
|
* qla4xxx_mem_alloc - allocates memory for use by adapter.
|
|
* @ha: Pointer to host adapter structure
|
|
*
|
|
* Allocates DMA memory for request and response queues. Also allocates memory
|
|
* for srbs.
|
|
**/
|
|
static int qla4xxx_mem_alloc(struct scsi_qla_host *ha)
|
|
{
|
|
unsigned long align;
|
|
|
|
/* Allocate contiguous block of DMA memory for queues. */
|
|
ha->queues_len = ((REQUEST_QUEUE_DEPTH * QUEUE_SIZE) +
|
|
(RESPONSE_QUEUE_DEPTH * QUEUE_SIZE) +
|
|
sizeof(struct shadow_regs) +
|
|
MEM_ALIGN_VALUE +
|
|
(PAGE_SIZE - 1)) & ~(PAGE_SIZE - 1);
|
|
ha->queues = dma_alloc_coherent(&ha->pdev->dev, ha->queues_len,
|
|
&ha->queues_dma, GFP_KERNEL);
|
|
if (ha->queues == NULL) {
|
|
ql4_printk(KERN_WARNING, ha,
|
|
"Memory Allocation failed - queues.\n");
|
|
|
|
goto mem_alloc_error_exit;
|
|
}
|
|
memset(ha->queues, 0, ha->queues_len);
|
|
|
|
/*
|
|
* As per RISC alignment requirements -- the bus-address must be a
|
|
* multiple of the request-ring size (in bytes).
|
|
*/
|
|
align = 0;
|
|
if ((unsigned long)ha->queues_dma & (MEM_ALIGN_VALUE - 1))
|
|
align = MEM_ALIGN_VALUE - ((unsigned long)ha->queues_dma &
|
|
(MEM_ALIGN_VALUE - 1));
|
|
|
|
/* Update request and response queue pointers. */
|
|
ha->request_dma = ha->queues_dma + align;
|
|
ha->request_ring = (struct queue_entry *) (ha->queues + align);
|
|
ha->response_dma = ha->queues_dma + align +
|
|
(REQUEST_QUEUE_DEPTH * QUEUE_SIZE);
|
|
ha->response_ring = (struct queue_entry *) (ha->queues + align +
|
|
(REQUEST_QUEUE_DEPTH *
|
|
QUEUE_SIZE));
|
|
ha->shadow_regs_dma = ha->queues_dma + align +
|
|
(REQUEST_QUEUE_DEPTH * QUEUE_SIZE) +
|
|
(RESPONSE_QUEUE_DEPTH * QUEUE_SIZE);
|
|
ha->shadow_regs = (struct shadow_regs *) (ha->queues + align +
|
|
(REQUEST_QUEUE_DEPTH *
|
|
QUEUE_SIZE) +
|
|
(RESPONSE_QUEUE_DEPTH *
|
|
QUEUE_SIZE));
|
|
|
|
/* Allocate memory for srb pool. */
|
|
ha->srb_mempool = mempool_create(SRB_MIN_REQ, mempool_alloc_slab,
|
|
mempool_free_slab, srb_cachep);
|
|
if (ha->srb_mempool == NULL) {
|
|
ql4_printk(KERN_WARNING, ha,
|
|
"Memory Allocation failed - SRB Pool.\n");
|
|
|
|
goto mem_alloc_error_exit;
|
|
}
|
|
|
|
return QLA_SUCCESS;
|
|
|
|
mem_alloc_error_exit:
|
|
qla4xxx_mem_free(ha);
|
|
return QLA_ERROR;
|
|
}
|
|
|
|
/**
|
|
* qla4_8xxx_check_fw_alive - Check firmware health
|
|
* @ha: Pointer to host adapter structure.
|
|
*
|
|
* Context: Interrupt
|
|
**/
|
|
static void qla4_8xxx_check_fw_alive(struct scsi_qla_host *ha)
|
|
{
|
|
uint32_t fw_heartbeat_counter, halt_status;
|
|
|
|
fw_heartbeat_counter = qla4_8xxx_rd_32(ha, QLA82XX_PEG_ALIVE_COUNTER);
|
|
/* If PEG_ALIVE_COUNTER is 0xffffffff, AER/EEH is in progress, ignore */
|
|
if (fw_heartbeat_counter == 0xffffffff) {
|
|
DEBUG2(printk(KERN_WARNING "scsi%ld: %s: Device in frozen "
|
|
"state, QLA82XX_PEG_ALIVE_COUNTER is 0xffffffff\n",
|
|
ha->host_no, __func__));
|
|
return;
|
|
}
|
|
|
|
if (ha->fw_heartbeat_counter == fw_heartbeat_counter) {
|
|
ha->seconds_since_last_heartbeat++;
|
|
/* FW not alive after 2 seconds */
|
|
if (ha->seconds_since_last_heartbeat == 2) {
|
|
ha->seconds_since_last_heartbeat = 0;
|
|
halt_status = qla4_8xxx_rd_32(ha,
|
|
QLA82XX_PEG_HALT_STATUS1);
|
|
|
|
/* Since we cannot change dev_state in interrupt
|
|
* context, set appropriate DPC flag then wakeup
|
|
* DPC */
|
|
if (halt_status & HALT_STATUS_UNRECOVERABLE)
|
|
set_bit(DPC_HA_UNRECOVERABLE, &ha->dpc_flags);
|
|
else {
|
|
printk("scsi%ld: %s: detect abort needed!\n",
|
|
ha->host_no, __func__);
|
|
set_bit(DPC_RESET_HA, &ha->dpc_flags);
|
|
}
|
|
qla4xxx_wake_dpc(ha);
|
|
qla4xxx_mailbox_premature_completion(ha);
|
|
}
|
|
} else
|
|
ha->seconds_since_last_heartbeat = 0;
|
|
|
|
ha->fw_heartbeat_counter = fw_heartbeat_counter;
|
|
}
|
|
|
|
/**
|
|
* qla4_8xxx_watchdog - Poll dev state
|
|
* @ha: Pointer to host adapter structure.
|
|
*
|
|
* Context: Interrupt
|
|
**/
|
|
void qla4_8xxx_watchdog(struct scsi_qla_host *ha)
|
|
{
|
|
uint32_t dev_state;
|
|
|
|
dev_state = qla4_8xxx_rd_32(ha, QLA82XX_CRB_DEV_STATE);
|
|
|
|
/* don't poll if reset is going on */
|
|
if (!test_bit(DPC_RESET_ACTIVE, &ha->dpc_flags)) {
|
|
if (dev_state == QLA82XX_DEV_NEED_RESET &&
|
|
!test_bit(DPC_RESET_HA, &ha->dpc_flags)) {
|
|
printk("scsi%ld: %s: HW State: NEED RESET!\n",
|
|
ha->host_no, __func__);
|
|
set_bit(DPC_RESET_HA, &ha->dpc_flags);
|
|
qla4xxx_wake_dpc(ha);
|
|
qla4xxx_mailbox_premature_completion(ha);
|
|
} else if (dev_state == QLA82XX_DEV_NEED_QUIESCENT &&
|
|
!test_bit(DPC_HA_NEED_QUIESCENT, &ha->dpc_flags)) {
|
|
printk("scsi%ld: %s: HW State: NEED QUIES!\n",
|
|
ha->host_no, __func__);
|
|
set_bit(DPC_HA_NEED_QUIESCENT, &ha->dpc_flags);
|
|
qla4xxx_wake_dpc(ha);
|
|
} else {
|
|
/* Check firmware health */
|
|
qla4_8xxx_check_fw_alive(ha);
|
|
}
|
|
}
|
|
}
|
|
|
|
/**
|
|
* qla4xxx_timer - checks every second for work to do.
|
|
* @ha: Pointer to host adapter structure.
|
|
**/
|
|
static void qla4xxx_timer(struct scsi_qla_host *ha)
|
|
{
|
|
struct ddb_entry *ddb_entry, *dtemp;
|
|
int start_dpc = 0;
|
|
uint16_t w;
|
|
|
|
/* If we are in the middle of AER/EEH processing
|
|
* skip any processing and reschedule the timer
|
|
*/
|
|
if (test_bit(AF_EEH_BUSY, &ha->flags)) {
|
|
mod_timer(&ha->timer, jiffies + HZ);
|
|
return;
|
|
}
|
|
|
|
/* Hardware read to trigger an EEH error during mailbox waits. */
|
|
if (!pci_channel_offline(ha->pdev))
|
|
pci_read_config_word(ha->pdev, PCI_VENDOR_ID, &w);
|
|
|
|
if (test_bit(AF_HBA_GOING_AWAY, &ha->flags)) {
|
|
DEBUG2(ql4_printk(KERN_INFO, ha, "%s exited. HBA GOING AWAY\n",
|
|
__func__));
|
|
return;
|
|
}
|
|
|
|
if (is_qla8022(ha)) {
|
|
qla4_8xxx_watchdog(ha);
|
|
}
|
|
|
|
/* Search for relogin's to time-out and port down retry. */
|
|
list_for_each_entry_safe(ddb_entry, dtemp, &ha->ddb_list, list) {
|
|
/* Count down time between sending relogins */
|
|
if (adapter_up(ha) &&
|
|
!test_bit(DF_RELOGIN, &ddb_entry->flags) &&
|
|
atomic_read(&ddb_entry->state) != DDB_STATE_ONLINE) {
|
|
if (atomic_read(&ddb_entry->retry_relogin_timer) !=
|
|
INVALID_ENTRY) {
|
|
if (atomic_read(&ddb_entry->retry_relogin_timer)
|
|
== 0) {
|
|
atomic_set(&ddb_entry->
|
|
retry_relogin_timer,
|
|
INVALID_ENTRY);
|
|
set_bit(DPC_RELOGIN_DEVICE,
|
|
&ha->dpc_flags);
|
|
set_bit(DF_RELOGIN, &ddb_entry->flags);
|
|
DEBUG2(printk("scsi%ld: %s: ddb [%d]"
|
|
" login device\n",
|
|
ha->host_no, __func__,
|
|
ddb_entry->fw_ddb_index));
|
|
} else
|
|
atomic_dec(&ddb_entry->
|
|
retry_relogin_timer);
|
|
}
|
|
}
|
|
|
|
/* Wait for relogin to timeout */
|
|
if (atomic_read(&ddb_entry->relogin_timer) &&
|
|
(atomic_dec_and_test(&ddb_entry->relogin_timer) != 0)) {
|
|
/*
|
|
* If the relogin times out and the device is
|
|
* still NOT ONLINE then try and relogin again.
|
|
*/
|
|
if (atomic_read(&ddb_entry->state) !=
|
|
DDB_STATE_ONLINE &&
|
|
ddb_entry->fw_ddb_device_state ==
|
|
DDB_DS_SESSION_FAILED) {
|
|
/* Reset retry relogin timer */
|
|
atomic_inc(&ddb_entry->relogin_retry_count);
|
|
DEBUG2(printk("scsi%ld: ddb [%d] relogin"
|
|
" timed out-retrying"
|
|
" relogin (%d)\n",
|
|
ha->host_no,
|
|
ddb_entry->fw_ddb_index,
|
|
atomic_read(&ddb_entry->
|
|
relogin_retry_count))
|
|
);
|
|
start_dpc++;
|
|
DEBUG(printk("scsi%ld:%d:%d: ddb [%d] "
|
|
"initate relogin after"
|
|
" %d seconds\n",
|
|
ha->host_no, ddb_entry->bus,
|
|
ddb_entry->target,
|
|
ddb_entry->fw_ddb_index,
|
|
ddb_entry->default_time2wait + 4)
|
|
);
|
|
|
|
atomic_set(&ddb_entry->retry_relogin_timer,
|
|
ddb_entry->default_time2wait + 4);
|
|
}
|
|
}
|
|
}
|
|
|
|
if (!is_qla8022(ha)) {
|
|
/* Check for heartbeat interval. */
|
|
if (ha->firmware_options & FWOPT_HEARTBEAT_ENABLE &&
|
|
ha->heartbeat_interval != 0) {
|
|
ha->seconds_since_last_heartbeat++;
|
|
if (ha->seconds_since_last_heartbeat >
|
|
ha->heartbeat_interval + 2)
|
|
set_bit(DPC_RESET_HA, &ha->dpc_flags);
|
|
}
|
|
}
|
|
|
|
/* Wakeup the dpc routine for this adapter, if needed. */
|
|
if ((start_dpc ||
|
|
test_bit(DPC_RESET_HA, &ha->dpc_flags) ||
|
|
test_bit(DPC_RETRY_RESET_HA, &ha->dpc_flags) ||
|
|
test_bit(DPC_RELOGIN_DEVICE, &ha->dpc_flags) ||
|
|
test_bit(DPC_RESET_HA_FW_CONTEXT, &ha->dpc_flags) ||
|
|
test_bit(DPC_RESET_HA_INTR, &ha->dpc_flags) ||
|
|
test_bit(DPC_GET_DHCP_IP_ADDR, &ha->dpc_flags) ||
|
|
test_bit(DPC_LINK_CHANGED, &ha->dpc_flags) ||
|
|
test_bit(DPC_HA_UNRECOVERABLE, &ha->dpc_flags) ||
|
|
test_bit(DPC_HA_NEED_QUIESCENT, &ha->dpc_flags) ||
|
|
test_bit(DPC_AEN, &ha->dpc_flags)) &&
|
|
!test_bit(AF_DPC_SCHEDULED, &ha->flags) &&
|
|
ha->dpc_thread) {
|
|
DEBUG2(printk("scsi%ld: %s: scheduling dpc routine"
|
|
" - dpc flags = 0x%lx\n",
|
|
ha->host_no, __func__, ha->dpc_flags));
|
|
qla4xxx_wake_dpc(ha);
|
|
}
|
|
|
|
/* Reschedule timer thread to call us back in one second */
|
|
mod_timer(&ha->timer, jiffies + HZ);
|
|
|
|
DEBUG2(ha->seconds_since_last_intr++);
|
|
}
|
|
|
|
/**
|
|
* qla4xxx_cmd_wait - waits for all outstanding commands to complete
|
|
* @ha: Pointer to host adapter structure.
|
|
*
|
|
* This routine stalls the driver until all outstanding commands are returned.
|
|
* Caller must release the Hardware Lock prior to calling this routine.
|
|
**/
|
|
static int qla4xxx_cmd_wait(struct scsi_qla_host *ha)
|
|
{
|
|
uint32_t index = 0;
|
|
unsigned long flags;
|
|
struct scsi_cmnd *cmd;
|
|
|
|
unsigned long wtime = jiffies + (WAIT_CMD_TOV * HZ);
|
|
|
|
DEBUG2(ql4_printk(KERN_INFO, ha, "Wait up to %d seconds for cmds to "
|
|
"complete\n", WAIT_CMD_TOV));
|
|
|
|
while (!time_after_eq(jiffies, wtime)) {
|
|
spin_lock_irqsave(&ha->hardware_lock, flags);
|
|
/* Find a command that hasn't completed. */
|
|
for (index = 0; index < ha->host->can_queue; index++) {
|
|
cmd = scsi_host_find_tag(ha->host, index);
|
|
/*
|
|
* We cannot just check if the index is valid,
|
|
* becase if we are run from the scsi eh, then
|
|
* the scsi/block layer is going to prevent
|
|
* the tag from being released.
|
|
*/
|
|
if (cmd != NULL && CMD_SP(cmd))
|
|
break;
|
|
}
|
|
spin_unlock_irqrestore(&ha->hardware_lock, flags);
|
|
|
|
/* If No Commands are pending, wait is complete */
|
|
if (index == ha->host->can_queue)
|
|
return QLA_SUCCESS;
|
|
|
|
msleep(1000);
|
|
}
|
|
/* If we timed out on waiting for commands to come back
|
|
* return ERROR. */
|
|
return QLA_ERROR;
|
|
}
|
|
|
|
int qla4xxx_hw_reset(struct scsi_qla_host *ha)
|
|
{
|
|
uint32_t ctrl_status;
|
|
unsigned long flags = 0;
|
|
|
|
DEBUG2(printk(KERN_ERR "scsi%ld: %s\n", ha->host_no, __func__));
|
|
|
|
if (ql4xxx_lock_drvr_wait(ha) != QLA_SUCCESS)
|
|
return QLA_ERROR;
|
|
|
|
spin_lock_irqsave(&ha->hardware_lock, flags);
|
|
|
|
/*
|
|
* If the SCSI Reset Interrupt bit is set, clear it.
|
|
* Otherwise, the Soft Reset won't work.
|
|
*/
|
|
ctrl_status = readw(&ha->reg->ctrl_status);
|
|
if ((ctrl_status & CSR_SCSI_RESET_INTR) != 0)
|
|
writel(set_rmask(CSR_SCSI_RESET_INTR), &ha->reg->ctrl_status);
|
|
|
|
/* Issue Soft Reset */
|
|
writel(set_rmask(CSR_SOFT_RESET), &ha->reg->ctrl_status);
|
|
readl(&ha->reg->ctrl_status);
|
|
|
|
spin_unlock_irqrestore(&ha->hardware_lock, flags);
|
|
return QLA_SUCCESS;
|
|
}
|
|
|
|
/**
|
|
* qla4xxx_soft_reset - performs soft reset.
|
|
* @ha: Pointer to host adapter structure.
|
|
**/
|
|
int qla4xxx_soft_reset(struct scsi_qla_host *ha)
|
|
{
|
|
uint32_t max_wait_time;
|
|
unsigned long flags = 0;
|
|
int status;
|
|
uint32_t ctrl_status;
|
|
|
|
status = qla4xxx_hw_reset(ha);
|
|
if (status != QLA_SUCCESS)
|
|
return status;
|
|
|
|
status = QLA_ERROR;
|
|
/* Wait until the Network Reset Intr bit is cleared */
|
|
max_wait_time = RESET_INTR_TOV;
|
|
do {
|
|
spin_lock_irqsave(&ha->hardware_lock, flags);
|
|
ctrl_status = readw(&ha->reg->ctrl_status);
|
|
spin_unlock_irqrestore(&ha->hardware_lock, flags);
|
|
|
|
if ((ctrl_status & CSR_NET_RESET_INTR) == 0)
|
|
break;
|
|
|
|
msleep(1000);
|
|
} while ((--max_wait_time));
|
|
|
|
if ((ctrl_status & CSR_NET_RESET_INTR) != 0) {
|
|
DEBUG2(printk(KERN_WARNING
|
|
"scsi%ld: Network Reset Intr not cleared by "
|
|
"Network function, clearing it now!\n",
|
|
ha->host_no));
|
|
spin_lock_irqsave(&ha->hardware_lock, flags);
|
|
writel(set_rmask(CSR_NET_RESET_INTR), &ha->reg->ctrl_status);
|
|
readl(&ha->reg->ctrl_status);
|
|
spin_unlock_irqrestore(&ha->hardware_lock, flags);
|
|
}
|
|
|
|
/* Wait until the firmware tells us the Soft Reset is done */
|
|
max_wait_time = SOFT_RESET_TOV;
|
|
do {
|
|
spin_lock_irqsave(&ha->hardware_lock, flags);
|
|
ctrl_status = readw(&ha->reg->ctrl_status);
|
|
spin_unlock_irqrestore(&ha->hardware_lock, flags);
|
|
|
|
if ((ctrl_status & CSR_SOFT_RESET) == 0) {
|
|
status = QLA_SUCCESS;
|
|
break;
|
|
}
|
|
|
|
msleep(1000);
|
|
} while ((--max_wait_time));
|
|
|
|
/*
|
|
* Also, make sure that the SCSI Reset Interrupt bit has been cleared
|
|
* after the soft reset has taken place.
|
|
*/
|
|
spin_lock_irqsave(&ha->hardware_lock, flags);
|
|
ctrl_status = readw(&ha->reg->ctrl_status);
|
|
if ((ctrl_status & CSR_SCSI_RESET_INTR) != 0) {
|
|
writel(set_rmask(CSR_SCSI_RESET_INTR), &ha->reg->ctrl_status);
|
|
readl(&ha->reg->ctrl_status);
|
|
}
|
|
spin_unlock_irqrestore(&ha->hardware_lock, flags);
|
|
|
|
/* If soft reset fails then most probably the bios on other
|
|
* function is also enabled.
|
|
* Since the initialization is sequential the other fn
|
|
* wont be able to acknowledge the soft reset.
|
|
* Issue a force soft reset to workaround this scenario.
|
|
*/
|
|
if (max_wait_time == 0) {
|
|
/* Issue Force Soft Reset */
|
|
spin_lock_irqsave(&ha->hardware_lock, flags);
|
|
writel(set_rmask(CSR_FORCE_SOFT_RESET), &ha->reg->ctrl_status);
|
|
readl(&ha->reg->ctrl_status);
|
|
spin_unlock_irqrestore(&ha->hardware_lock, flags);
|
|
/* Wait until the firmware tells us the Soft Reset is done */
|
|
max_wait_time = SOFT_RESET_TOV;
|
|
do {
|
|
spin_lock_irqsave(&ha->hardware_lock, flags);
|
|
ctrl_status = readw(&ha->reg->ctrl_status);
|
|
spin_unlock_irqrestore(&ha->hardware_lock, flags);
|
|
|
|
if ((ctrl_status & CSR_FORCE_SOFT_RESET) == 0) {
|
|
status = QLA_SUCCESS;
|
|
break;
|
|
}
|
|
|
|
msleep(1000);
|
|
} while ((--max_wait_time));
|
|
}
|
|
|
|
return status;
|
|
}
|
|
|
|
/**
|
|
* qla4xxx_abort_active_cmds - returns all outstanding i/o requests to O.S.
|
|
* @ha: Pointer to host adapter structure.
|
|
* @res: returned scsi status
|
|
*
|
|
* This routine is called just prior to a HARD RESET to return all
|
|
* outstanding commands back to the Operating System.
|
|
* Caller should make sure that the following locks are released
|
|
* before this calling routine: Hardware lock, and io_request_lock.
|
|
**/
|
|
static void qla4xxx_abort_active_cmds(struct scsi_qla_host *ha, int res)
|
|
{
|
|
struct srb *srb;
|
|
int i;
|
|
unsigned long flags;
|
|
|
|
spin_lock_irqsave(&ha->hardware_lock, flags);
|
|
for (i = 0; i < ha->host->can_queue; i++) {
|
|
srb = qla4xxx_del_from_active_array(ha, i);
|
|
if (srb != NULL) {
|
|
srb->cmd->result = res;
|
|
kref_put(&srb->srb_ref, qla4xxx_srb_compl);
|
|
}
|
|
}
|
|
spin_unlock_irqrestore(&ha->hardware_lock, flags);
|
|
}
|
|
|
|
void qla4xxx_dead_adapter_cleanup(struct scsi_qla_host *ha)
|
|
{
|
|
clear_bit(AF_ONLINE, &ha->flags);
|
|
|
|
/* Disable the board */
|
|
ql4_printk(KERN_INFO, ha, "Disabling the board\n");
|
|
set_bit(AF_HBA_GOING_AWAY, &ha->flags);
|
|
|
|
qla4xxx_abort_active_cmds(ha, DID_NO_CONNECT << 16);
|
|
qla4xxx_mark_all_devices_missing(ha);
|
|
clear_bit(AF_INIT_DONE, &ha->flags);
|
|
}
|
|
|
|
/**
|
|
* qla4xxx_recover_adapter - recovers adapter after a fatal error
|
|
* @ha: Pointer to host adapter structure.
|
|
**/
|
|
static int qla4xxx_recover_adapter(struct scsi_qla_host *ha)
|
|
{
|
|
int status = QLA_ERROR;
|
|
uint8_t reset_chip = 0;
|
|
|
|
/* Stall incoming I/O until we are done */
|
|
scsi_block_requests(ha->host);
|
|
clear_bit(AF_ONLINE, &ha->flags);
|
|
|
|
DEBUG2(ql4_printk(KERN_INFO, ha, "%s: adapter OFFLINE\n", __func__));
|
|
|
|
set_bit(DPC_RESET_ACTIVE, &ha->dpc_flags);
|
|
|
|
if (test_bit(DPC_RESET_HA, &ha->dpc_flags))
|
|
reset_chip = 1;
|
|
|
|
/* For the DPC_RESET_HA_INTR case (ISP-4xxx specific)
|
|
* do not reset adapter, jump to initialize_adapter */
|
|
if (test_bit(DPC_RESET_HA_INTR, &ha->dpc_flags)) {
|
|
status = QLA_SUCCESS;
|
|
goto recover_ha_init_adapter;
|
|
}
|
|
|
|
/* For the ISP-82xx adapter, issue a stop_firmware if invoked
|
|
* from eh_host_reset or ioctl module */
|
|
if (is_qla8022(ha) && !reset_chip &&
|
|
test_bit(DPC_RESET_HA_FW_CONTEXT, &ha->dpc_flags)) {
|
|
|
|
DEBUG2(ql4_printk(KERN_INFO, ha,
|
|
"scsi%ld: %s - Performing stop_firmware...\n",
|
|
ha->host_no, __func__));
|
|
status = ha->isp_ops->reset_firmware(ha);
|
|
if (status == QLA_SUCCESS) {
|
|
if (!test_bit(AF_FW_RECOVERY, &ha->flags))
|
|
qla4xxx_cmd_wait(ha);
|
|
ha->isp_ops->disable_intrs(ha);
|
|
qla4xxx_process_aen(ha, FLUSH_DDB_CHANGED_AENS);
|
|
qla4xxx_abort_active_cmds(ha, DID_RESET << 16);
|
|
} else {
|
|
/* If the stop_firmware fails then
|
|
* reset the entire chip */
|
|
reset_chip = 1;
|
|
clear_bit(DPC_RESET_HA_FW_CONTEXT, &ha->dpc_flags);
|
|
set_bit(DPC_RESET_HA, &ha->dpc_flags);
|
|
}
|
|
}
|
|
|
|
/* Issue full chip reset if recovering from a catastrophic error,
|
|
* or if stop_firmware fails for ISP-82xx.
|
|
* This is the default case for ISP-4xxx */
|
|
if (!is_qla8022(ha) || reset_chip) {
|
|
if (!test_bit(AF_FW_RECOVERY, &ha->flags))
|
|
qla4xxx_cmd_wait(ha);
|
|
qla4xxx_process_aen(ha, FLUSH_DDB_CHANGED_AENS);
|
|
qla4xxx_abort_active_cmds(ha, DID_RESET << 16);
|
|
DEBUG2(ql4_printk(KERN_INFO, ha,
|
|
"scsi%ld: %s - Performing chip reset..\n",
|
|
ha->host_no, __func__));
|
|
status = ha->isp_ops->reset_chip(ha);
|
|
}
|
|
|
|
/* Flush any pending ddb changed AENs */
|
|
qla4xxx_process_aen(ha, FLUSH_DDB_CHANGED_AENS);
|
|
|
|
recover_ha_init_adapter:
|
|
/* Upon successful firmware/chip reset, re-initialize the adapter */
|
|
if (status == QLA_SUCCESS) {
|
|
/* For ISP-4xxx, force function 1 to always initialize
|
|
* before function 3 to prevent both funcions from
|
|
* stepping on top of the other */
|
|
if (!is_qla8022(ha) && (ha->mac_index == 3))
|
|
ssleep(6);
|
|
|
|
/* NOTE: AF_ONLINE flag set upon successful completion of
|
|
* qla4xxx_initialize_adapter */
|
|
status = qla4xxx_initialize_adapter(ha, PRESERVE_DDB_LIST);
|
|
}
|
|
|
|
/* Retry failed adapter initialization, if necessary
|
|
* Do not retry initialize_adapter for RESET_HA_INTR (ISP-4xxx specific)
|
|
* case to prevent ping-pong resets between functions */
|
|
if (!test_bit(AF_ONLINE, &ha->flags) &&
|
|
!test_bit(DPC_RESET_HA_INTR, &ha->dpc_flags)) {
|
|
/* Adapter initialization failed, see if we can retry
|
|
* resetting the ha.
|
|
* Since we don't want to block the DPC for too long
|
|
* with multiple resets in the same thread,
|
|
* utilize DPC to retry */
|
|
if (!test_bit(DPC_RETRY_RESET_HA, &ha->dpc_flags)) {
|
|
ha->retry_reset_ha_cnt = MAX_RESET_HA_RETRIES;
|
|
DEBUG2(printk("scsi%ld: recover adapter - retrying "
|
|
"(%d) more times\n", ha->host_no,
|
|
ha->retry_reset_ha_cnt));
|
|
set_bit(DPC_RETRY_RESET_HA, &ha->dpc_flags);
|
|
status = QLA_ERROR;
|
|
} else {
|
|
if (ha->retry_reset_ha_cnt > 0) {
|
|
/* Schedule another Reset HA--DPC will retry */
|
|
ha->retry_reset_ha_cnt--;
|
|
DEBUG2(printk("scsi%ld: recover adapter - "
|
|
"retry remaining %d\n",
|
|
ha->host_no,
|
|
ha->retry_reset_ha_cnt));
|
|
status = QLA_ERROR;
|
|
}
|
|
|
|
if (ha->retry_reset_ha_cnt == 0) {
|
|
/* Recover adapter retries have been exhausted.
|
|
* Adapter DEAD */
|
|
DEBUG2(printk("scsi%ld: recover adapter "
|
|
"failed - board disabled\n",
|
|
ha->host_no));
|
|
qla4xxx_dead_adapter_cleanup(ha);
|
|
clear_bit(DPC_RETRY_RESET_HA, &ha->dpc_flags);
|
|
clear_bit(DPC_RESET_HA, &ha->dpc_flags);
|
|
clear_bit(DPC_RESET_HA_FW_CONTEXT,
|
|
&ha->dpc_flags);
|
|
status = QLA_ERROR;
|
|
}
|
|
}
|
|
} else {
|
|
clear_bit(DPC_RESET_HA, &ha->dpc_flags);
|
|
clear_bit(DPC_RESET_HA_FW_CONTEXT, &ha->dpc_flags);
|
|
clear_bit(DPC_RETRY_RESET_HA, &ha->dpc_flags);
|
|
}
|
|
|
|
ha->adapter_error_count++;
|
|
|
|
if (test_bit(AF_ONLINE, &ha->flags))
|
|
ha->isp_ops->enable_intrs(ha);
|
|
|
|
scsi_unblock_requests(ha->host);
|
|
|
|
clear_bit(DPC_RESET_ACTIVE, &ha->dpc_flags);
|
|
DEBUG2(printk("scsi%ld: recover adapter: %s\n", ha->host_no,
|
|
status == QLA_ERROR ? "FAILED" : "SUCCEDED"));
|
|
|
|
return status;
|
|
}
|
|
|
|
void qla4xxx_wake_dpc(struct scsi_qla_host *ha)
|
|
{
|
|
if (ha->dpc_thread &&
|
|
!test_bit(AF_DPC_SCHEDULED, &ha->flags)) {
|
|
set_bit(AF_DPC_SCHEDULED, &ha->flags);
|
|
queue_work(ha->dpc_thread, &ha->dpc_work);
|
|
}
|
|
}
|
|
|
|
/**
|
|
* qla4xxx_do_dpc - dpc routine
|
|
* @data: in our case pointer to adapter structure
|
|
*
|
|
* This routine is a task that is schedule by the interrupt handler
|
|
* to perform the background processing for interrupts. We put it
|
|
* on a task queue that is consumed whenever the scheduler runs; that's
|
|
* so you can do anything (i.e. put the process to sleep etc). In fact,
|
|
* the mid-level tries to sleep when it reaches the driver threshold
|
|
* "host->can_queue". This can cause a panic if we were in our interrupt code.
|
|
**/
|
|
static void qla4xxx_do_dpc(struct work_struct *work)
|
|
{
|
|
struct scsi_qla_host *ha =
|
|
container_of(work, struct scsi_qla_host, dpc_work);
|
|
struct ddb_entry *ddb_entry, *dtemp;
|
|
int status = QLA_ERROR;
|
|
|
|
DEBUG2(printk("scsi%ld: %s: DPC handler waking up."
|
|
"flags = 0x%08lx, dpc_flags = 0x%08lx\n",
|
|
ha->host_no, __func__, ha->flags, ha->dpc_flags))
|
|
|
|
/* Initialization not yet finished. Don't do anything yet. */
|
|
if (!test_bit(AF_INIT_DONE, &ha->flags))
|
|
goto do_dpc_exit;
|
|
|
|
if (test_bit(AF_EEH_BUSY, &ha->flags)) {
|
|
DEBUG2(printk(KERN_INFO "scsi%ld: %s: flags = %lx\n",
|
|
ha->host_no, __func__, ha->flags));
|
|
goto do_dpc_exit;
|
|
}
|
|
|
|
/* HBA is in the process of being permanently disabled.
|
|
* Don't process anything */
|
|
if (test_bit(AF_HBA_GOING_AWAY, &ha->flags))
|
|
return;
|
|
|
|
if (is_qla8022(ha)) {
|
|
if (test_bit(DPC_HA_UNRECOVERABLE, &ha->dpc_flags)) {
|
|
qla4_8xxx_idc_lock(ha);
|
|
qla4_8xxx_wr_32(ha, QLA82XX_CRB_DEV_STATE,
|
|
QLA82XX_DEV_FAILED);
|
|
qla4_8xxx_idc_unlock(ha);
|
|
ql4_printk(KERN_INFO, ha, "HW State: FAILED\n");
|
|
qla4_8xxx_device_state_handler(ha);
|
|
}
|
|
if (test_and_clear_bit(DPC_HA_NEED_QUIESCENT, &ha->dpc_flags)) {
|
|
qla4_8xxx_need_qsnt_handler(ha);
|
|
}
|
|
}
|
|
|
|
if (!test_bit(DPC_RESET_ACTIVE, &ha->dpc_flags) &&
|
|
(test_bit(DPC_RESET_HA, &ha->dpc_flags) ||
|
|
test_bit(DPC_RESET_HA_INTR, &ha->dpc_flags) ||
|
|
test_bit(DPC_RESET_HA_FW_CONTEXT, &ha->dpc_flags))) {
|
|
if (ql4xdontresethba) {
|
|
DEBUG2(printk("scsi%ld: %s: Don't Reset HBA\n",
|
|
ha->host_no, __func__));
|
|
clear_bit(DPC_RESET_HA, &ha->dpc_flags);
|
|
clear_bit(DPC_RESET_HA_INTR, &ha->dpc_flags);
|
|
clear_bit(DPC_RESET_HA_FW_CONTEXT, &ha->dpc_flags);
|
|
goto dpc_post_reset_ha;
|
|
}
|
|
if (test_bit(DPC_RESET_HA_FW_CONTEXT, &ha->dpc_flags) ||
|
|
test_bit(DPC_RESET_HA, &ha->dpc_flags))
|
|
qla4xxx_recover_adapter(ha);
|
|
|
|
if (test_bit(DPC_RESET_HA_INTR, &ha->dpc_flags)) {
|
|
uint8_t wait_time = RESET_INTR_TOV;
|
|
|
|
while ((readw(&ha->reg->ctrl_status) &
|
|
(CSR_SOFT_RESET | CSR_FORCE_SOFT_RESET)) != 0) {
|
|
if (--wait_time == 0)
|
|
break;
|
|
msleep(1000);
|
|
}
|
|
if (wait_time == 0)
|
|
DEBUG2(printk("scsi%ld: %s: SR|FSR "
|
|
"bit not cleared-- resetting\n",
|
|
ha->host_no, __func__));
|
|
qla4xxx_abort_active_cmds(ha, DID_RESET << 16);
|
|
if (ql4xxx_lock_drvr_wait(ha) == QLA_SUCCESS) {
|
|
qla4xxx_process_aen(ha, FLUSH_DDB_CHANGED_AENS);
|
|
status = qla4xxx_recover_adapter(ha);
|
|
}
|
|
clear_bit(DPC_RESET_HA_INTR, &ha->dpc_flags);
|
|
if (status == QLA_SUCCESS)
|
|
ha->isp_ops->enable_intrs(ha);
|
|
}
|
|
}
|
|
|
|
dpc_post_reset_ha:
|
|
/* ---- process AEN? --- */
|
|
if (test_and_clear_bit(DPC_AEN, &ha->dpc_flags))
|
|
qla4xxx_process_aen(ha, PROCESS_ALL_AENS);
|
|
|
|
/* ---- Get DHCP IP Address? --- */
|
|
if (test_and_clear_bit(DPC_GET_DHCP_IP_ADDR, &ha->dpc_flags))
|
|
qla4xxx_get_dhcp_ip_address(ha);
|
|
|
|
/* ---- link change? --- */
|
|
if (test_and_clear_bit(DPC_LINK_CHANGED, &ha->dpc_flags)) {
|
|
if (!test_bit(AF_LINK_UP, &ha->flags)) {
|
|
/* ---- link down? --- */
|
|
list_for_each_entry_safe(ddb_entry, dtemp,
|
|
&ha->ddb_list, list) {
|
|
if (atomic_read(&ddb_entry->state) ==
|
|
DDB_STATE_ONLINE)
|
|
qla4xxx_mark_device_missing(ha,
|
|
ddb_entry);
|
|
}
|
|
} else {
|
|
/* ---- link up? --- *
|
|
* F/W will auto login to all devices ONLY ONCE after
|
|
* link up during driver initialization and runtime
|
|
* fatal error recovery. Therefore, the driver must
|
|
* manually relogin to devices when recovering from
|
|
* connection failures, logouts, expired KATO, etc. */
|
|
|
|
list_for_each_entry_safe(ddb_entry, dtemp,
|
|
&ha->ddb_list, list) {
|
|
if ((atomic_read(&ddb_entry->state) ==
|
|
DDB_STATE_MISSING) ||
|
|
(atomic_read(&ddb_entry->state) ==
|
|
DDB_STATE_DEAD)) {
|
|
if (ddb_entry->fw_ddb_device_state ==
|
|
DDB_DS_SESSION_ACTIVE) {
|
|
atomic_set(&ddb_entry->state,
|
|
DDB_STATE_ONLINE);
|
|
ql4_printk(KERN_INFO, ha,
|
|
"scsi%ld: %s: ddb[%d]"
|
|
" marked ONLINE\n",
|
|
ha->host_no, __func__,
|
|
ddb_entry->fw_ddb_index);
|
|
|
|
iscsi_unblock_session(
|
|
ddb_entry->sess);
|
|
} else
|
|
qla4xxx_relogin_device(
|
|
ha, ddb_entry);
|
|
}
|
|
|
|
}
|
|
}
|
|
}
|
|
|
|
/* ---- relogin device? --- */
|
|
if (adapter_up(ha) &&
|
|
test_and_clear_bit(DPC_RELOGIN_DEVICE, &ha->dpc_flags)) {
|
|
list_for_each_entry_safe(ddb_entry, dtemp,
|
|
&ha->ddb_list, list) {
|
|
if (test_and_clear_bit(DF_RELOGIN, &ddb_entry->flags) &&
|
|
atomic_read(&ddb_entry->state) != DDB_STATE_ONLINE)
|
|
qla4xxx_relogin_device(ha, ddb_entry);
|
|
|
|
/*
|
|
* If mbx cmd times out there is no point
|
|
* in continuing further.
|
|
* With large no of targets this can hang
|
|
* the system.
|
|
*/
|
|
if (test_bit(DPC_RESET_HA, &ha->dpc_flags)) {
|
|
printk(KERN_WARNING "scsi%ld: %s: "
|
|
"need to reset hba\n",
|
|
ha->host_no, __func__);
|
|
break;
|
|
}
|
|
}
|
|
}
|
|
|
|
do_dpc_exit:
|
|
clear_bit(AF_DPC_SCHEDULED, &ha->flags);
|
|
}
|
|
|
|
/**
|
|
* qla4xxx_free_adapter - release the adapter
|
|
* @ha: pointer to adapter structure
|
|
**/
|
|
static void qla4xxx_free_adapter(struct scsi_qla_host *ha)
|
|
{
|
|
|
|
if (test_bit(AF_INTERRUPTS_ON, &ha->flags)) {
|
|
/* Turn-off interrupts on the card. */
|
|
ha->isp_ops->disable_intrs(ha);
|
|
}
|
|
|
|
/* Remove timer thread, if present */
|
|
if (ha->timer_active)
|
|
qla4xxx_stop_timer(ha);
|
|
|
|
/* Kill the kernel thread for this host */
|
|
if (ha->dpc_thread)
|
|
destroy_workqueue(ha->dpc_thread);
|
|
|
|
/* Put firmware in known state */
|
|
ha->isp_ops->reset_firmware(ha);
|
|
|
|
if (is_qla8022(ha)) {
|
|
qla4_8xxx_idc_lock(ha);
|
|
qla4_8xxx_clear_drv_active(ha);
|
|
qla4_8xxx_idc_unlock(ha);
|
|
}
|
|
|
|
/* Detach interrupts */
|
|
if (test_and_clear_bit(AF_IRQ_ATTACHED, &ha->flags))
|
|
qla4xxx_free_irqs(ha);
|
|
|
|
/* free extra memory */
|
|
qla4xxx_mem_free(ha);
|
|
}
|
|
|
|
int qla4_8xxx_iospace_config(struct scsi_qla_host *ha)
|
|
{
|
|
int status = 0;
|
|
uint8_t revision_id;
|
|
unsigned long mem_base, mem_len, db_base, db_len;
|
|
struct pci_dev *pdev = ha->pdev;
|
|
|
|
status = pci_request_regions(pdev, DRIVER_NAME);
|
|
if (status) {
|
|
printk(KERN_WARNING
|
|
"scsi(%ld) Failed to reserve PIO regions (%s) "
|
|
"status=%d\n", ha->host_no, pci_name(pdev), status);
|
|
goto iospace_error_exit;
|
|
}
|
|
|
|
pci_read_config_byte(pdev, PCI_REVISION_ID, &revision_id);
|
|
DEBUG2(printk(KERN_INFO "%s: revision-id=%d\n",
|
|
__func__, revision_id));
|
|
ha->revision_id = revision_id;
|
|
|
|
/* remap phys address */
|
|
mem_base = pci_resource_start(pdev, 0); /* 0 is for BAR 0 */
|
|
mem_len = pci_resource_len(pdev, 0);
|
|
DEBUG2(printk(KERN_INFO "%s: ioremap from %lx a size of %lx\n",
|
|
__func__, mem_base, mem_len));
|
|
|
|
/* mapping of pcibase pointer */
|
|
ha->nx_pcibase = (unsigned long)ioremap(mem_base, mem_len);
|
|
if (!ha->nx_pcibase) {
|
|
printk(KERN_ERR
|
|
"cannot remap MMIO (%s), aborting\n", pci_name(pdev));
|
|
pci_release_regions(ha->pdev);
|
|
goto iospace_error_exit;
|
|
}
|
|
|
|
/* Mapping of IO base pointer, door bell read and write pointer */
|
|
|
|
/* mapping of IO base pointer */
|
|
ha->qla4_8xxx_reg =
|
|
(struct device_reg_82xx __iomem *)((uint8_t *)ha->nx_pcibase +
|
|
0xbc000 + (ha->pdev->devfn << 11));
|
|
|
|
db_base = pci_resource_start(pdev, 4); /* doorbell is on bar 4 */
|
|
db_len = pci_resource_len(pdev, 4);
|
|
|
|
ha->nx_db_wr_ptr = (ha->pdev->devfn == 4 ? QLA82XX_CAM_RAM_DB1 :
|
|
QLA82XX_CAM_RAM_DB2);
|
|
|
|
return 0;
|
|
iospace_error_exit:
|
|
return -ENOMEM;
|
|
}
|
|
|
|
/***
|
|
* qla4xxx_iospace_config - maps registers
|
|
* @ha: pointer to adapter structure
|
|
*
|
|
* This routines maps HBA's registers from the pci address space
|
|
* into the kernel virtual address space for memory mapped i/o.
|
|
**/
|
|
int qla4xxx_iospace_config(struct scsi_qla_host *ha)
|
|
{
|
|
unsigned long pio, pio_len, pio_flags;
|
|
unsigned long mmio, mmio_len, mmio_flags;
|
|
|
|
pio = pci_resource_start(ha->pdev, 0);
|
|
pio_len = pci_resource_len(ha->pdev, 0);
|
|
pio_flags = pci_resource_flags(ha->pdev, 0);
|
|
if (pio_flags & IORESOURCE_IO) {
|
|
if (pio_len < MIN_IOBASE_LEN) {
|
|
ql4_printk(KERN_WARNING, ha,
|
|
"Invalid PCI I/O region size\n");
|
|
pio = 0;
|
|
}
|
|
} else {
|
|
ql4_printk(KERN_WARNING, ha, "region #0 not a PIO resource\n");
|
|
pio = 0;
|
|
}
|
|
|
|
/* Use MMIO operations for all accesses. */
|
|
mmio = pci_resource_start(ha->pdev, 1);
|
|
mmio_len = pci_resource_len(ha->pdev, 1);
|
|
mmio_flags = pci_resource_flags(ha->pdev, 1);
|
|
|
|
if (!(mmio_flags & IORESOURCE_MEM)) {
|
|
ql4_printk(KERN_ERR, ha,
|
|
"region #0 not an MMIO resource, aborting\n");
|
|
|
|
goto iospace_error_exit;
|
|
}
|
|
|
|
if (mmio_len < MIN_IOBASE_LEN) {
|
|
ql4_printk(KERN_ERR, ha,
|
|
"Invalid PCI mem region size, aborting\n");
|
|
goto iospace_error_exit;
|
|
}
|
|
|
|
if (pci_request_regions(ha->pdev, DRIVER_NAME)) {
|
|
ql4_printk(KERN_WARNING, ha,
|
|
"Failed to reserve PIO/MMIO regions\n");
|
|
|
|
goto iospace_error_exit;
|
|
}
|
|
|
|
ha->pio_address = pio;
|
|
ha->pio_length = pio_len;
|
|
ha->reg = ioremap(mmio, MIN_IOBASE_LEN);
|
|
if (!ha->reg) {
|
|
ql4_printk(KERN_ERR, ha,
|
|
"cannot remap MMIO, aborting\n");
|
|
|
|
goto iospace_error_exit;
|
|
}
|
|
|
|
return 0;
|
|
|
|
iospace_error_exit:
|
|
return -ENOMEM;
|
|
}
|
|
|
|
static struct isp_operations qla4xxx_isp_ops = {
|
|
.iospace_config = qla4xxx_iospace_config,
|
|
.pci_config = qla4xxx_pci_config,
|
|
.disable_intrs = qla4xxx_disable_intrs,
|
|
.enable_intrs = qla4xxx_enable_intrs,
|
|
.start_firmware = qla4xxx_start_firmware,
|
|
.intr_handler = qla4xxx_intr_handler,
|
|
.interrupt_service_routine = qla4xxx_interrupt_service_routine,
|
|
.reset_chip = qla4xxx_soft_reset,
|
|
.reset_firmware = qla4xxx_hw_reset,
|
|
.queue_iocb = qla4xxx_queue_iocb,
|
|
.complete_iocb = qla4xxx_complete_iocb,
|
|
.rd_shdw_req_q_out = qla4xxx_rd_shdw_req_q_out,
|
|
.rd_shdw_rsp_q_in = qla4xxx_rd_shdw_rsp_q_in,
|
|
.get_sys_info = qla4xxx_get_sys_info,
|
|
};
|
|
|
|
static struct isp_operations qla4_8xxx_isp_ops = {
|
|
.iospace_config = qla4_8xxx_iospace_config,
|
|
.pci_config = qla4_8xxx_pci_config,
|
|
.disable_intrs = qla4_8xxx_disable_intrs,
|
|
.enable_intrs = qla4_8xxx_enable_intrs,
|
|
.start_firmware = qla4_8xxx_load_risc,
|
|
.intr_handler = qla4_8xxx_intr_handler,
|
|
.interrupt_service_routine = qla4_8xxx_interrupt_service_routine,
|
|
.reset_chip = qla4_8xxx_isp_reset,
|
|
.reset_firmware = qla4_8xxx_stop_firmware,
|
|
.queue_iocb = qla4_8xxx_queue_iocb,
|
|
.complete_iocb = qla4_8xxx_complete_iocb,
|
|
.rd_shdw_req_q_out = qla4_8xxx_rd_shdw_req_q_out,
|
|
.rd_shdw_rsp_q_in = qla4_8xxx_rd_shdw_rsp_q_in,
|
|
.get_sys_info = qla4_8xxx_get_sys_info,
|
|
};
|
|
|
|
uint16_t qla4xxx_rd_shdw_req_q_out(struct scsi_qla_host *ha)
|
|
{
|
|
return (uint16_t)le32_to_cpu(ha->shadow_regs->req_q_out);
|
|
}
|
|
|
|
uint16_t qla4_8xxx_rd_shdw_req_q_out(struct scsi_qla_host *ha)
|
|
{
|
|
return (uint16_t)le32_to_cpu(readl(&ha->qla4_8xxx_reg->req_q_out));
|
|
}
|
|
|
|
uint16_t qla4xxx_rd_shdw_rsp_q_in(struct scsi_qla_host *ha)
|
|
{
|
|
return (uint16_t)le32_to_cpu(ha->shadow_regs->rsp_q_in);
|
|
}
|
|
|
|
uint16_t qla4_8xxx_rd_shdw_rsp_q_in(struct scsi_qla_host *ha)
|
|
{
|
|
return (uint16_t)le32_to_cpu(readl(&ha->qla4_8xxx_reg->rsp_q_in));
|
|
}
|
|
|
|
/**
|
|
* qla4xxx_probe_adapter - callback function to probe HBA
|
|
* @pdev: pointer to pci_dev structure
|
|
* @pci_device_id: pointer to pci_device entry
|
|
*
|
|
* This routine will probe for Qlogic 4xxx iSCSI host adapters.
|
|
* It returns zero if successful. It also initializes all data necessary for
|
|
* the driver.
|
|
**/
|
|
static int __devinit qla4xxx_probe_adapter(struct pci_dev *pdev,
|
|
const struct pci_device_id *ent)
|
|
{
|
|
int ret = -ENODEV, status;
|
|
struct Scsi_Host *host;
|
|
struct scsi_qla_host *ha;
|
|
uint8_t init_retry_count = 0;
|
|
char buf[34];
|
|
struct qla4_8xxx_legacy_intr_set *nx_legacy_intr;
|
|
|
|
if (pci_enable_device(pdev))
|
|
return -1;
|
|
|
|
host = scsi_host_alloc(&qla4xxx_driver_template, sizeof(*ha));
|
|
if (host == NULL) {
|
|
printk(KERN_WARNING
|
|
"qla4xxx: Couldn't allocate host from scsi layer!\n");
|
|
goto probe_disable_device;
|
|
}
|
|
|
|
/* Clear our data area */
|
|
ha = (struct scsi_qla_host *) host->hostdata;
|
|
memset(ha, 0, sizeof(*ha));
|
|
|
|
/* Save the information from PCI BIOS. */
|
|
ha->pdev = pdev;
|
|
ha->host = host;
|
|
ha->host_no = host->host_no;
|
|
|
|
pci_enable_pcie_error_reporting(pdev);
|
|
|
|
/* Setup Runtime configurable options */
|
|
if (is_qla8022(ha)) {
|
|
ha->isp_ops = &qla4_8xxx_isp_ops;
|
|
rwlock_init(&ha->hw_lock);
|
|
ha->qdr_sn_window = -1;
|
|
ha->ddr_mn_window = -1;
|
|
ha->curr_window = 255;
|
|
ha->func_num = PCI_FUNC(ha->pdev->devfn);
|
|
nx_legacy_intr = &legacy_intr[ha->func_num];
|
|
ha->nx_legacy_intr.int_vec_bit = nx_legacy_intr->int_vec_bit;
|
|
ha->nx_legacy_intr.tgt_status_reg =
|
|
nx_legacy_intr->tgt_status_reg;
|
|
ha->nx_legacy_intr.tgt_mask_reg = nx_legacy_intr->tgt_mask_reg;
|
|
ha->nx_legacy_intr.pci_int_reg = nx_legacy_intr->pci_int_reg;
|
|
} else {
|
|
ha->isp_ops = &qla4xxx_isp_ops;
|
|
}
|
|
|
|
/* Set EEH reset type to fundamental if required by hba */
|
|
if (is_qla8022(ha))
|
|
pdev->needs_freset = 1;
|
|
|
|
/* Configure PCI I/O space. */
|
|
ret = ha->isp_ops->iospace_config(ha);
|
|
if (ret)
|
|
goto probe_failed_ioconfig;
|
|
|
|
ql4_printk(KERN_INFO, ha, "Found an ISP%04x, irq %d, iobase 0x%p\n",
|
|
pdev->device, pdev->irq, ha->reg);
|
|
|
|
qla4xxx_config_dma_addressing(ha);
|
|
|
|
/* Initialize lists and spinlocks. */
|
|
INIT_LIST_HEAD(&ha->ddb_list);
|
|
INIT_LIST_HEAD(&ha->free_srb_q);
|
|
|
|
mutex_init(&ha->mbox_sem);
|
|
init_completion(&ha->mbx_intr_comp);
|
|
|
|
spin_lock_init(&ha->hardware_lock);
|
|
|
|
/* Allocate dma buffers */
|
|
if (qla4xxx_mem_alloc(ha)) {
|
|
ql4_printk(KERN_WARNING, ha,
|
|
"[ERROR] Failed to allocate memory for adapter\n");
|
|
|
|
ret = -ENOMEM;
|
|
goto probe_failed;
|
|
}
|
|
|
|
if (is_qla8022(ha))
|
|
(void) qla4_8xxx_get_flash_info(ha);
|
|
|
|
/*
|
|
* Initialize the Host adapter request/response queues and
|
|
* firmware
|
|
* NOTE: interrupts enabled upon successful completion
|
|
*/
|
|
status = qla4xxx_initialize_adapter(ha, REBUILD_DDB_LIST);
|
|
while ((!test_bit(AF_ONLINE, &ha->flags)) &&
|
|
init_retry_count++ < MAX_INIT_RETRIES) {
|
|
DEBUG2(printk("scsi: %s: retrying adapter initialization "
|
|
"(%d)\n", __func__, init_retry_count));
|
|
|
|
if (ha->isp_ops->reset_chip(ha) == QLA_ERROR)
|
|
continue;
|
|
|
|
status = qla4xxx_initialize_adapter(ha, REBUILD_DDB_LIST);
|
|
}
|
|
|
|
if (!test_bit(AF_ONLINE, &ha->flags)) {
|
|
ql4_printk(KERN_WARNING, ha, "Failed to initialize adapter\n");
|
|
|
|
ret = -ENODEV;
|
|
goto probe_failed;
|
|
}
|
|
|
|
host->cmd_per_lun = 3;
|
|
host->max_channel = 0;
|
|
host->max_lun = MAX_LUNS - 1;
|
|
host->max_id = MAX_TARGETS;
|
|
host->max_cmd_len = IOCB_MAX_CDB_LEN;
|
|
host->can_queue = MAX_SRBS ;
|
|
host->transportt = qla4xxx_scsi_transport;
|
|
|
|
ret = scsi_init_shared_tag_map(host, MAX_SRBS);
|
|
if (ret) {
|
|
ql4_printk(KERN_WARNING, ha,
|
|
"scsi_init_shared_tag_map failed\n");
|
|
goto probe_failed;
|
|
}
|
|
|
|
/* Startup the kernel thread for this host adapter. */
|
|
DEBUG2(printk("scsi: %s: Starting kernel thread for "
|
|
"qla4xxx_dpc\n", __func__));
|
|
sprintf(buf, "qla4xxx_%lu_dpc", ha->host_no);
|
|
ha->dpc_thread = create_singlethread_workqueue(buf);
|
|
if (!ha->dpc_thread) {
|
|
ql4_printk(KERN_WARNING, ha, "Unable to start DPC thread!\n");
|
|
ret = -ENODEV;
|
|
goto probe_failed;
|
|
}
|
|
INIT_WORK(&ha->dpc_work, qla4xxx_do_dpc);
|
|
|
|
/* For ISP-82XX, request_irqs is called in qla4_8xxx_load_risc
|
|
* (which is called indirectly by qla4xxx_initialize_adapter),
|
|
* so that irqs will be registered after crbinit but before
|
|
* mbx_intr_enable.
|
|
*/
|
|
if (!is_qla8022(ha)) {
|
|
ret = qla4xxx_request_irqs(ha);
|
|
if (ret) {
|
|
ql4_printk(KERN_WARNING, ha, "Failed to reserve "
|
|
"interrupt %d already in use.\n", pdev->irq);
|
|
goto probe_failed;
|
|
}
|
|
}
|
|
|
|
pci_save_state(ha->pdev);
|
|
ha->isp_ops->enable_intrs(ha);
|
|
|
|
/* Start timer thread. */
|
|
qla4xxx_start_timer(ha, qla4xxx_timer, 1);
|
|
|
|
set_bit(AF_INIT_DONE, &ha->flags);
|
|
|
|
pci_set_drvdata(pdev, ha);
|
|
|
|
ret = scsi_add_host(host, &pdev->dev);
|
|
if (ret)
|
|
goto probe_failed;
|
|
|
|
printk(KERN_INFO
|
|
" QLogic iSCSI HBA Driver version: %s\n"
|
|
" QLogic ISP%04x @ %s, host#=%ld, fw=%02d.%02d.%02d.%02d\n",
|
|
qla4xxx_version_str, ha->pdev->device, pci_name(ha->pdev),
|
|
ha->host_no, ha->firmware_version[0], ha->firmware_version[1],
|
|
ha->patch_number, ha->build_number);
|
|
scsi_scan_host(host);
|
|
return 0;
|
|
|
|
probe_failed:
|
|
qla4xxx_free_adapter(ha);
|
|
|
|
probe_failed_ioconfig:
|
|
pci_disable_pcie_error_reporting(pdev);
|
|
scsi_host_put(ha->host);
|
|
|
|
probe_disable_device:
|
|
pci_disable_device(pdev);
|
|
|
|
return ret;
|
|
}
|
|
|
|
/**
|
|
* qla4xxx_remove_adapter - calback function to remove adapter.
|
|
* @pci_dev: PCI device pointer
|
|
**/
|
|
static void __devexit qla4xxx_remove_adapter(struct pci_dev *pdev)
|
|
{
|
|
struct scsi_qla_host *ha;
|
|
|
|
ha = pci_get_drvdata(pdev);
|
|
|
|
set_bit(AF_HBA_GOING_AWAY, &ha->flags);
|
|
|
|
/* remove devs from iscsi_sessions to scsi_devices */
|
|
qla4xxx_free_ddb_list(ha);
|
|
|
|
scsi_remove_host(ha->host);
|
|
|
|
qla4xxx_free_adapter(ha);
|
|
|
|
scsi_host_put(ha->host);
|
|
|
|
pci_disable_pcie_error_reporting(pdev);
|
|
pci_disable_device(pdev);
|
|
pci_set_drvdata(pdev, NULL);
|
|
}
|
|
|
|
/**
|
|
* qla4xxx_config_dma_addressing() - Configure OS DMA addressing method.
|
|
* @ha: HA context
|
|
*
|
|
* At exit, the @ha's flags.enable_64bit_addressing set to indicated
|
|
* supported addressing method.
|
|
*/
|
|
static void qla4xxx_config_dma_addressing(struct scsi_qla_host *ha)
|
|
{
|
|
int retval;
|
|
|
|
/* Update our PCI device dma_mask for full 64 bit mask */
|
|
if (pci_set_dma_mask(ha->pdev, DMA_BIT_MASK(64)) == 0) {
|
|
if (pci_set_consistent_dma_mask(ha->pdev, DMA_BIT_MASK(64))) {
|
|
dev_dbg(&ha->pdev->dev,
|
|
"Failed to set 64 bit PCI consistent mask; "
|
|
"using 32 bit.\n");
|
|
retval = pci_set_consistent_dma_mask(ha->pdev,
|
|
DMA_BIT_MASK(32));
|
|
}
|
|
} else
|
|
retval = pci_set_dma_mask(ha->pdev, DMA_BIT_MASK(32));
|
|
}
|
|
|
|
static int qla4xxx_slave_alloc(struct scsi_device *sdev)
|
|
{
|
|
struct iscsi_cls_session *sess = starget_to_session(sdev->sdev_target);
|
|
struct ddb_entry *ddb = sess->dd_data;
|
|
|
|
sdev->hostdata = ddb;
|
|
sdev->tagged_supported = 1;
|
|
scsi_activate_tcq(sdev, QL4_DEF_QDEPTH);
|
|
return 0;
|
|
}
|
|
|
|
static int qla4xxx_slave_configure(struct scsi_device *sdev)
|
|
{
|
|
sdev->tagged_supported = 1;
|
|
return 0;
|
|
}
|
|
|
|
static void qla4xxx_slave_destroy(struct scsi_device *sdev)
|
|
{
|
|
scsi_deactivate_tcq(sdev, 1);
|
|
}
|
|
|
|
/**
|
|
* qla4xxx_del_from_active_array - returns an active srb
|
|
* @ha: Pointer to host adapter structure.
|
|
* @index: index into the active_array
|
|
*
|
|
* This routine removes and returns the srb at the specified index
|
|
**/
|
|
struct srb *qla4xxx_del_from_active_array(struct scsi_qla_host *ha,
|
|
uint32_t index)
|
|
{
|
|
struct srb *srb = NULL;
|
|
struct scsi_cmnd *cmd = NULL;
|
|
|
|
cmd = scsi_host_find_tag(ha->host, index);
|
|
if (!cmd)
|
|
return srb;
|
|
|
|
srb = (struct srb *)CMD_SP(cmd);
|
|
if (!srb)
|
|
return srb;
|
|
|
|
/* update counters */
|
|
if (srb->flags & SRB_DMA_VALID) {
|
|
ha->req_q_count += srb->iocb_cnt;
|
|
ha->iocb_cnt -= srb->iocb_cnt;
|
|
if (srb->cmd)
|
|
srb->cmd->host_scribble =
|
|
(unsigned char *)(unsigned long) MAX_SRBS;
|
|
}
|
|
return srb;
|
|
}
|
|
|
|
/**
|
|
* qla4xxx_eh_wait_on_command - waits for command to be returned by firmware
|
|
* @ha: Pointer to host adapter structure.
|
|
* @cmd: Scsi Command to wait on.
|
|
*
|
|
* This routine waits for the command to be returned by the Firmware
|
|
* for some max time.
|
|
**/
|
|
static int qla4xxx_eh_wait_on_command(struct scsi_qla_host *ha,
|
|
struct scsi_cmnd *cmd)
|
|
{
|
|
int done = 0;
|
|
struct srb *rp;
|
|
uint32_t max_wait_time = EH_WAIT_CMD_TOV;
|
|
int ret = SUCCESS;
|
|
|
|
/* Dont wait on command if PCI error is being handled
|
|
* by PCI AER driver
|
|
*/
|
|
if (unlikely(pci_channel_offline(ha->pdev)) ||
|
|
(test_bit(AF_EEH_BUSY, &ha->flags))) {
|
|
ql4_printk(KERN_WARNING, ha, "scsi%ld: Return from %s\n",
|
|
ha->host_no, __func__);
|
|
return ret;
|
|
}
|
|
|
|
do {
|
|
/* Checking to see if its returned to OS */
|
|
rp = (struct srb *) CMD_SP(cmd);
|
|
if (rp == NULL) {
|
|
done++;
|
|
break;
|
|
}
|
|
|
|
msleep(2000);
|
|
} while (max_wait_time--);
|
|
|
|
return done;
|
|
}
|
|
|
|
/**
|
|
* qla4xxx_wait_for_hba_online - waits for HBA to come online
|
|
* @ha: Pointer to host adapter structure
|
|
**/
|
|
static int qla4xxx_wait_for_hba_online(struct scsi_qla_host *ha)
|
|
{
|
|
unsigned long wait_online;
|
|
|
|
wait_online = jiffies + (HBA_ONLINE_TOV * HZ);
|
|
while (time_before(jiffies, wait_online)) {
|
|
|
|
if (adapter_up(ha))
|
|
return QLA_SUCCESS;
|
|
|
|
msleep(2000);
|
|
}
|
|
|
|
return QLA_ERROR;
|
|
}
|
|
|
|
/**
|
|
* qla4xxx_eh_wait_for_commands - wait for active cmds to finish.
|
|
* @ha: pointer to HBA
|
|
* @t: target id
|
|
* @l: lun id
|
|
*
|
|
* This function waits for all outstanding commands to a lun to complete. It
|
|
* returns 0 if all pending commands are returned and 1 otherwise.
|
|
**/
|
|
static int qla4xxx_eh_wait_for_commands(struct scsi_qla_host *ha,
|
|
struct scsi_target *stgt,
|
|
struct scsi_device *sdev)
|
|
{
|
|
int cnt;
|
|
int status = 0;
|
|
struct scsi_cmnd *cmd;
|
|
|
|
/*
|
|
* Waiting for all commands for the designated target or dev
|
|
* in the active array
|
|
*/
|
|
for (cnt = 0; cnt < ha->host->can_queue; cnt++) {
|
|
cmd = scsi_host_find_tag(ha->host, cnt);
|
|
if (cmd && stgt == scsi_target(cmd->device) &&
|
|
(!sdev || sdev == cmd->device)) {
|
|
if (!qla4xxx_eh_wait_on_command(ha, cmd)) {
|
|
status++;
|
|
break;
|
|
}
|
|
}
|
|
}
|
|
return status;
|
|
}
|
|
|
|
/**
|
|
* qla4xxx_eh_abort - callback for abort task.
|
|
* @cmd: Pointer to Linux's SCSI command structure
|
|
*
|
|
* This routine is called by the Linux OS to abort the specified
|
|
* command.
|
|
**/
|
|
static int qla4xxx_eh_abort(struct scsi_cmnd *cmd)
|
|
{
|
|
struct scsi_qla_host *ha = to_qla_host(cmd->device->host);
|
|
unsigned int id = cmd->device->id;
|
|
unsigned int lun = cmd->device->lun;
|
|
unsigned long serial = cmd->serial_number;
|
|
unsigned long flags;
|
|
struct srb *srb = NULL;
|
|
int ret = SUCCESS;
|
|
int wait = 0;
|
|
|
|
ql4_printk(KERN_INFO, ha,
|
|
"scsi%ld:%d:%d: Abort command issued cmd=%p, pid=%ld\n",
|
|
ha->host_no, id, lun, cmd, serial);
|
|
|
|
spin_lock_irqsave(&ha->hardware_lock, flags);
|
|
srb = (struct srb *) CMD_SP(cmd);
|
|
if (!srb) {
|
|
spin_unlock_irqrestore(&ha->hardware_lock, flags);
|
|
return SUCCESS;
|
|
}
|
|
kref_get(&srb->srb_ref);
|
|
spin_unlock_irqrestore(&ha->hardware_lock, flags);
|
|
|
|
if (qla4xxx_abort_task(ha, srb) != QLA_SUCCESS) {
|
|
DEBUG3(printk("scsi%ld:%d:%d: Abort_task mbx failed.\n",
|
|
ha->host_no, id, lun));
|
|
ret = FAILED;
|
|
} else {
|
|
DEBUG3(printk("scsi%ld:%d:%d: Abort_task mbx success.\n",
|
|
ha->host_no, id, lun));
|
|
wait = 1;
|
|
}
|
|
|
|
kref_put(&srb->srb_ref, qla4xxx_srb_compl);
|
|
|
|
/* Wait for command to complete */
|
|
if (wait) {
|
|
if (!qla4xxx_eh_wait_on_command(ha, cmd)) {
|
|
DEBUG2(printk("scsi%ld:%d:%d: Abort handler timed out\n",
|
|
ha->host_no, id, lun));
|
|
ret = FAILED;
|
|
}
|
|
}
|
|
|
|
ql4_printk(KERN_INFO, ha,
|
|
"scsi%ld:%d:%d: Abort command - %s\n",
|
|
ha->host_no, id, lun, (ret == SUCCESS) ? "succeded" : "failed");
|
|
|
|
return ret;
|
|
}
|
|
|
|
/**
|
|
* qla4xxx_eh_device_reset - callback for target reset.
|
|
* @cmd: Pointer to Linux's SCSI command structure
|
|
*
|
|
* This routine is called by the Linux OS to reset all luns on the
|
|
* specified target.
|
|
**/
|
|
static int qla4xxx_eh_device_reset(struct scsi_cmnd *cmd)
|
|
{
|
|
struct scsi_qla_host *ha = to_qla_host(cmd->device->host);
|
|
struct ddb_entry *ddb_entry = cmd->device->hostdata;
|
|
int ret = FAILED, stat;
|
|
|
|
if (!ddb_entry)
|
|
return ret;
|
|
|
|
ret = iscsi_block_scsi_eh(cmd);
|
|
if (ret)
|
|
return ret;
|
|
ret = FAILED;
|
|
|
|
ql4_printk(KERN_INFO, ha,
|
|
"scsi%ld:%d:%d:%d: DEVICE RESET ISSUED.\n", ha->host_no,
|
|
cmd->device->channel, cmd->device->id, cmd->device->lun);
|
|
|
|
DEBUG2(printk(KERN_INFO
|
|
"scsi%ld: DEVICE_RESET cmd=%p jiffies = 0x%lx, to=%x,"
|
|
"dpc_flags=%lx, status=%x allowed=%d\n", ha->host_no,
|
|
cmd, jiffies, cmd->request->timeout / HZ,
|
|
ha->dpc_flags, cmd->result, cmd->allowed));
|
|
|
|
/* FIXME: wait for hba to go online */
|
|
stat = qla4xxx_reset_lun(ha, ddb_entry, cmd->device->lun);
|
|
if (stat != QLA_SUCCESS) {
|
|
ql4_printk(KERN_INFO, ha, "DEVICE RESET FAILED. %d\n", stat);
|
|
goto eh_dev_reset_done;
|
|
}
|
|
|
|
if (qla4xxx_eh_wait_for_commands(ha, scsi_target(cmd->device),
|
|
cmd->device)) {
|
|
ql4_printk(KERN_INFO, ha,
|
|
"DEVICE RESET FAILED - waiting for "
|
|
"commands.\n");
|
|
goto eh_dev_reset_done;
|
|
}
|
|
|
|
/* Send marker. */
|
|
if (qla4xxx_send_marker_iocb(ha, ddb_entry, cmd->device->lun,
|
|
MM_LUN_RESET) != QLA_SUCCESS)
|
|
goto eh_dev_reset_done;
|
|
|
|
ql4_printk(KERN_INFO, ha,
|
|
"scsi(%ld:%d:%d:%d): DEVICE RESET SUCCEEDED.\n",
|
|
ha->host_no, cmd->device->channel, cmd->device->id,
|
|
cmd->device->lun);
|
|
|
|
ret = SUCCESS;
|
|
|
|
eh_dev_reset_done:
|
|
|
|
return ret;
|
|
}
|
|
|
|
/**
|
|
* qla4xxx_eh_target_reset - callback for target reset.
|
|
* @cmd: Pointer to Linux's SCSI command structure
|
|
*
|
|
* This routine is called by the Linux OS to reset the target.
|
|
**/
|
|
static int qla4xxx_eh_target_reset(struct scsi_cmnd *cmd)
|
|
{
|
|
struct scsi_qla_host *ha = to_qla_host(cmd->device->host);
|
|
struct ddb_entry *ddb_entry = cmd->device->hostdata;
|
|
int stat, ret;
|
|
|
|
if (!ddb_entry)
|
|
return FAILED;
|
|
|
|
ret = iscsi_block_scsi_eh(cmd);
|
|
if (ret)
|
|
return ret;
|
|
|
|
starget_printk(KERN_INFO, scsi_target(cmd->device),
|
|
"WARM TARGET RESET ISSUED.\n");
|
|
|
|
DEBUG2(printk(KERN_INFO
|
|
"scsi%ld: TARGET_DEVICE_RESET cmd=%p jiffies = 0x%lx, "
|
|
"to=%x,dpc_flags=%lx, status=%x allowed=%d\n",
|
|
ha->host_no, cmd, jiffies, cmd->request->timeout / HZ,
|
|
ha->dpc_flags, cmd->result, cmd->allowed));
|
|
|
|
stat = qla4xxx_reset_target(ha, ddb_entry);
|
|
if (stat != QLA_SUCCESS) {
|
|
starget_printk(KERN_INFO, scsi_target(cmd->device),
|
|
"WARM TARGET RESET FAILED.\n");
|
|
return FAILED;
|
|
}
|
|
|
|
if (qla4xxx_eh_wait_for_commands(ha, scsi_target(cmd->device),
|
|
NULL)) {
|
|
starget_printk(KERN_INFO, scsi_target(cmd->device),
|
|
"WARM TARGET DEVICE RESET FAILED - "
|
|
"waiting for commands.\n");
|
|
return FAILED;
|
|
}
|
|
|
|
/* Send marker. */
|
|
if (qla4xxx_send_marker_iocb(ha, ddb_entry, cmd->device->lun,
|
|
MM_TGT_WARM_RESET) != QLA_SUCCESS) {
|
|
starget_printk(KERN_INFO, scsi_target(cmd->device),
|
|
"WARM TARGET DEVICE RESET FAILED - "
|
|
"marker iocb failed.\n");
|
|
return FAILED;
|
|
}
|
|
|
|
starget_printk(KERN_INFO, scsi_target(cmd->device),
|
|
"WARM TARGET RESET SUCCEEDED.\n");
|
|
return SUCCESS;
|
|
}
|
|
|
|
/**
|
|
* qla4xxx_eh_host_reset - kernel callback
|
|
* @cmd: Pointer to Linux's SCSI command structure
|
|
*
|
|
* This routine is invoked by the Linux kernel to perform fatal error
|
|
* recovery on the specified adapter.
|
|
**/
|
|
static int qla4xxx_eh_host_reset(struct scsi_cmnd *cmd)
|
|
{
|
|
int return_status = FAILED;
|
|
struct scsi_qla_host *ha;
|
|
|
|
ha = (struct scsi_qla_host *) cmd->device->host->hostdata;
|
|
|
|
if (ql4xdontresethba) {
|
|
DEBUG2(printk("scsi%ld: %s: Don't Reset HBA\n",
|
|
ha->host_no, __func__));
|
|
return FAILED;
|
|
}
|
|
|
|
ql4_printk(KERN_INFO, ha,
|
|
"scsi(%ld:%d:%d:%d): HOST RESET ISSUED.\n", ha->host_no,
|
|
cmd->device->channel, cmd->device->id, cmd->device->lun);
|
|
|
|
if (qla4xxx_wait_for_hba_online(ha) != QLA_SUCCESS) {
|
|
DEBUG2(printk("scsi%ld:%d: %s: Unable to reset host. Adapter "
|
|
"DEAD.\n", ha->host_no, cmd->device->channel,
|
|
__func__));
|
|
|
|
return FAILED;
|
|
}
|
|
|
|
if (!test_bit(DPC_RESET_HA, &ha->dpc_flags)) {
|
|
if (is_qla8022(ha))
|
|
set_bit(DPC_RESET_HA_FW_CONTEXT, &ha->dpc_flags);
|
|
else
|
|
set_bit(DPC_RESET_HA, &ha->dpc_flags);
|
|
}
|
|
|
|
if (qla4xxx_recover_adapter(ha) == QLA_SUCCESS)
|
|
return_status = SUCCESS;
|
|
|
|
ql4_printk(KERN_INFO, ha, "HOST RESET %s.\n",
|
|
return_status == FAILED ? "FAILED" : "SUCCEDED");
|
|
|
|
return return_status;
|
|
}
|
|
|
|
/* PCI AER driver recovers from all correctable errors w/o
|
|
* driver intervention. For uncorrectable errors PCI AER
|
|
* driver calls the following device driver's callbacks
|
|
*
|
|
* - Fatal Errors - link_reset
|
|
* - Non-Fatal Errors - driver's pci_error_detected() which
|
|
* returns CAN_RECOVER, NEED_RESET or DISCONNECT.
|
|
*
|
|
* PCI AER driver calls
|
|
* CAN_RECOVER - driver's pci_mmio_enabled(), mmio_enabled
|
|
* returns RECOVERED or NEED_RESET if fw_hung
|
|
* NEED_RESET - driver's slot_reset()
|
|
* DISCONNECT - device is dead & cannot recover
|
|
* RECOVERED - driver's pci_resume()
|
|
*/
|
|
static pci_ers_result_t
|
|
qla4xxx_pci_error_detected(struct pci_dev *pdev, pci_channel_state_t state)
|
|
{
|
|
struct scsi_qla_host *ha = pci_get_drvdata(pdev);
|
|
|
|
ql4_printk(KERN_WARNING, ha, "scsi%ld: %s: error detected:state %x\n",
|
|
ha->host_no, __func__, state);
|
|
|
|
if (!is_aer_supported(ha))
|
|
return PCI_ERS_RESULT_NONE;
|
|
|
|
switch (state) {
|
|
case pci_channel_io_normal:
|
|
clear_bit(AF_EEH_BUSY, &ha->flags);
|
|
return PCI_ERS_RESULT_CAN_RECOVER;
|
|
case pci_channel_io_frozen:
|
|
set_bit(AF_EEH_BUSY, &ha->flags);
|
|
qla4xxx_mailbox_premature_completion(ha);
|
|
qla4xxx_free_irqs(ha);
|
|
pci_disable_device(pdev);
|
|
/* Return back all IOs */
|
|
qla4xxx_abort_active_cmds(ha, DID_RESET << 16);
|
|
return PCI_ERS_RESULT_NEED_RESET;
|
|
case pci_channel_io_perm_failure:
|
|
set_bit(AF_EEH_BUSY, &ha->flags);
|
|
set_bit(AF_PCI_CHANNEL_IO_PERM_FAILURE, &ha->flags);
|
|
qla4xxx_abort_active_cmds(ha, DID_NO_CONNECT << 16);
|
|
return PCI_ERS_RESULT_DISCONNECT;
|
|
}
|
|
return PCI_ERS_RESULT_NEED_RESET;
|
|
}
|
|
|
|
/**
|
|
* qla4xxx_pci_mmio_enabled() gets called if
|
|
* qla4xxx_pci_error_detected() returns PCI_ERS_RESULT_CAN_RECOVER
|
|
* and read/write to the device still works.
|
|
**/
|
|
static pci_ers_result_t
|
|
qla4xxx_pci_mmio_enabled(struct pci_dev *pdev)
|
|
{
|
|
struct scsi_qla_host *ha = pci_get_drvdata(pdev);
|
|
|
|
if (!is_aer_supported(ha))
|
|
return PCI_ERS_RESULT_NONE;
|
|
|
|
return PCI_ERS_RESULT_RECOVERED;
|
|
}
|
|
|
|
static uint32_t qla4_8xxx_error_recovery(struct scsi_qla_host *ha)
|
|
{
|
|
uint32_t rval = QLA_ERROR;
|
|
uint32_t ret = 0;
|
|
int fn;
|
|
struct pci_dev *other_pdev = NULL;
|
|
|
|
ql4_printk(KERN_WARNING, ha, "scsi%ld: In %s\n", ha->host_no, __func__);
|
|
|
|
set_bit(DPC_RESET_ACTIVE, &ha->dpc_flags);
|
|
|
|
if (test_bit(AF_ONLINE, &ha->flags)) {
|
|
clear_bit(AF_ONLINE, &ha->flags);
|
|
qla4xxx_mark_all_devices_missing(ha);
|
|
qla4xxx_process_aen(ha, FLUSH_DDB_CHANGED_AENS);
|
|
}
|
|
|
|
fn = PCI_FUNC(ha->pdev->devfn);
|
|
while (fn > 0) {
|
|
fn--;
|
|
ql4_printk(KERN_INFO, ha, "scsi%ld: %s: Finding PCI device at "
|
|
"func %x\n", ha->host_no, __func__, fn);
|
|
/* Get the pci device given the domain, bus,
|
|
* slot/function number */
|
|
other_pdev =
|
|
pci_get_domain_bus_and_slot(pci_domain_nr(ha->pdev->bus),
|
|
ha->pdev->bus->number, PCI_DEVFN(PCI_SLOT(ha->pdev->devfn),
|
|
fn));
|
|
|
|
if (!other_pdev)
|
|
continue;
|
|
|
|
if (atomic_read(&other_pdev->enable_cnt)) {
|
|
ql4_printk(KERN_INFO, ha, "scsi%ld: %s: Found PCI "
|
|
"func in enabled state%x\n", ha->host_no,
|
|
__func__, fn);
|
|
pci_dev_put(other_pdev);
|
|
break;
|
|
}
|
|
pci_dev_put(other_pdev);
|
|
}
|
|
|
|
/* The first function on the card, the reset owner will
|
|
* start & initialize the firmware. The other functions
|
|
* on the card will reset the firmware context
|
|
*/
|
|
if (!fn) {
|
|
ql4_printk(KERN_INFO, ha, "scsi%ld: %s: devfn being reset "
|
|
"0x%x is the owner\n", ha->host_no, __func__,
|
|
ha->pdev->devfn);
|
|
|
|
qla4_8xxx_idc_lock(ha);
|
|
qla4_8xxx_wr_32(ha, QLA82XX_CRB_DEV_STATE,
|
|
QLA82XX_DEV_COLD);
|
|
|
|
qla4_8xxx_wr_32(ha, QLA82XX_CRB_DRV_IDC_VERSION,
|
|
QLA82XX_IDC_VERSION);
|
|
|
|
qla4_8xxx_idc_unlock(ha);
|
|
clear_bit(AF_FW_RECOVERY, &ha->flags);
|
|
rval = qla4xxx_initialize_adapter(ha, PRESERVE_DDB_LIST);
|
|
qla4_8xxx_idc_lock(ha);
|
|
|
|
if (rval != QLA_SUCCESS) {
|
|
ql4_printk(KERN_INFO, ha, "scsi%ld: %s: HW State: "
|
|
"FAILED\n", ha->host_no, __func__);
|
|
qla4_8xxx_clear_drv_active(ha);
|
|
qla4_8xxx_wr_32(ha, QLA82XX_CRB_DEV_STATE,
|
|
QLA82XX_DEV_FAILED);
|
|
} else {
|
|
ql4_printk(KERN_INFO, ha, "scsi%ld: %s: HW State: "
|
|
"READY\n", ha->host_no, __func__);
|
|
qla4_8xxx_wr_32(ha, QLA82XX_CRB_DEV_STATE,
|
|
QLA82XX_DEV_READY);
|
|
/* Clear driver state register */
|
|
qla4_8xxx_wr_32(ha, QLA82XX_CRB_DRV_STATE, 0);
|
|
qla4_8xxx_set_drv_active(ha);
|
|
ret = qla4xxx_request_irqs(ha);
|
|
if (ret) {
|
|
ql4_printk(KERN_WARNING, ha, "Failed to "
|
|
"reserve interrupt %d already in use.\n",
|
|
ha->pdev->irq);
|
|
rval = QLA_ERROR;
|
|
} else {
|
|
ha->isp_ops->enable_intrs(ha);
|
|
rval = QLA_SUCCESS;
|
|
}
|
|
}
|
|
qla4_8xxx_idc_unlock(ha);
|
|
} else {
|
|
ql4_printk(KERN_INFO, ha, "scsi%ld: %s: devfn 0x%x is not "
|
|
"the reset owner\n", ha->host_no, __func__,
|
|
ha->pdev->devfn);
|
|
if ((qla4_8xxx_rd_32(ha, QLA82XX_CRB_DEV_STATE) ==
|
|
QLA82XX_DEV_READY)) {
|
|
clear_bit(AF_FW_RECOVERY, &ha->flags);
|
|
rval = qla4xxx_initialize_adapter(ha,
|
|
PRESERVE_DDB_LIST);
|
|
if (rval == QLA_SUCCESS) {
|
|
ret = qla4xxx_request_irqs(ha);
|
|
if (ret) {
|
|
ql4_printk(KERN_WARNING, ha, "Failed to"
|
|
" reserve interrupt %d already in"
|
|
" use.\n", ha->pdev->irq);
|
|
rval = QLA_ERROR;
|
|
} else {
|
|
ha->isp_ops->enable_intrs(ha);
|
|
rval = QLA_SUCCESS;
|
|
}
|
|
}
|
|
qla4_8xxx_idc_lock(ha);
|
|
qla4_8xxx_set_drv_active(ha);
|
|
qla4_8xxx_idc_unlock(ha);
|
|
}
|
|
}
|
|
clear_bit(DPC_RESET_ACTIVE, &ha->dpc_flags);
|
|
return rval;
|
|
}
|
|
|
|
static pci_ers_result_t
|
|
qla4xxx_pci_slot_reset(struct pci_dev *pdev)
|
|
{
|
|
pci_ers_result_t ret = PCI_ERS_RESULT_DISCONNECT;
|
|
struct scsi_qla_host *ha = pci_get_drvdata(pdev);
|
|
int rc;
|
|
|
|
ql4_printk(KERN_WARNING, ha, "scsi%ld: %s: slot_reset\n",
|
|
ha->host_no, __func__);
|
|
|
|
if (!is_aer_supported(ha))
|
|
return PCI_ERS_RESULT_NONE;
|
|
|
|
/* Restore the saved state of PCIe device -
|
|
* BAR registers, PCI Config space, PCIX, MSI,
|
|
* IOV states
|
|
*/
|
|
pci_restore_state(pdev);
|
|
|
|
/* pci_restore_state() clears the saved_state flag of the device
|
|
* save restored state which resets saved_state flag
|
|
*/
|
|
pci_save_state(pdev);
|
|
|
|
/* Initialize device or resume if in suspended state */
|
|
rc = pci_enable_device(pdev);
|
|
if (rc) {
|
|
ql4_printk(KERN_WARNING, ha, "scsi%ld: %s: Cant re-enable "
|
|
"device after reset\n", ha->host_no, __func__);
|
|
goto exit_slot_reset;
|
|
}
|
|
|
|
ha->isp_ops->disable_intrs(ha);
|
|
|
|
if (is_qla8022(ha)) {
|
|
if (qla4_8xxx_error_recovery(ha) == QLA_SUCCESS) {
|
|
ret = PCI_ERS_RESULT_RECOVERED;
|
|
goto exit_slot_reset;
|
|
} else
|
|
goto exit_slot_reset;
|
|
}
|
|
|
|
exit_slot_reset:
|
|
ql4_printk(KERN_WARNING, ha, "scsi%ld: %s: Return=%x\n"
|
|
"device after reset\n", ha->host_no, __func__, ret);
|
|
return ret;
|
|
}
|
|
|
|
static void
|
|
qla4xxx_pci_resume(struct pci_dev *pdev)
|
|
{
|
|
struct scsi_qla_host *ha = pci_get_drvdata(pdev);
|
|
int ret;
|
|
|
|
ql4_printk(KERN_WARNING, ha, "scsi%ld: %s: pci_resume\n",
|
|
ha->host_no, __func__);
|
|
|
|
ret = qla4xxx_wait_for_hba_online(ha);
|
|
if (ret != QLA_SUCCESS) {
|
|
ql4_printk(KERN_ERR, ha, "scsi%ld: %s: the device failed to "
|
|
"resume I/O from slot/link_reset\n", ha->host_no,
|
|
__func__);
|
|
}
|
|
|
|
pci_cleanup_aer_uncorrect_error_status(pdev);
|
|
clear_bit(AF_EEH_BUSY, &ha->flags);
|
|
}
|
|
|
|
static struct pci_error_handlers qla4xxx_err_handler = {
|
|
.error_detected = qla4xxx_pci_error_detected,
|
|
.mmio_enabled = qla4xxx_pci_mmio_enabled,
|
|
.slot_reset = qla4xxx_pci_slot_reset,
|
|
.resume = qla4xxx_pci_resume,
|
|
};
|
|
|
|
static struct pci_device_id qla4xxx_pci_tbl[] = {
|
|
{
|
|
.vendor = PCI_VENDOR_ID_QLOGIC,
|
|
.device = PCI_DEVICE_ID_QLOGIC_ISP4010,
|
|
.subvendor = PCI_ANY_ID,
|
|
.subdevice = PCI_ANY_ID,
|
|
},
|
|
{
|
|
.vendor = PCI_VENDOR_ID_QLOGIC,
|
|
.device = PCI_DEVICE_ID_QLOGIC_ISP4022,
|
|
.subvendor = PCI_ANY_ID,
|
|
.subdevice = PCI_ANY_ID,
|
|
},
|
|
{
|
|
.vendor = PCI_VENDOR_ID_QLOGIC,
|
|
.device = PCI_DEVICE_ID_QLOGIC_ISP4032,
|
|
.subvendor = PCI_ANY_ID,
|
|
.subdevice = PCI_ANY_ID,
|
|
},
|
|
{
|
|
.vendor = PCI_VENDOR_ID_QLOGIC,
|
|
.device = PCI_DEVICE_ID_QLOGIC_ISP8022,
|
|
.subvendor = PCI_ANY_ID,
|
|
.subdevice = PCI_ANY_ID,
|
|
},
|
|
{0, 0},
|
|
};
|
|
MODULE_DEVICE_TABLE(pci, qla4xxx_pci_tbl);
|
|
|
|
static struct pci_driver qla4xxx_pci_driver = {
|
|
.name = DRIVER_NAME,
|
|
.id_table = qla4xxx_pci_tbl,
|
|
.probe = qla4xxx_probe_adapter,
|
|
.remove = qla4xxx_remove_adapter,
|
|
.err_handler = &qla4xxx_err_handler,
|
|
};
|
|
|
|
static int __init qla4xxx_module_init(void)
|
|
{
|
|
int ret;
|
|
|
|
/* Allocate cache for SRBs. */
|
|
srb_cachep = kmem_cache_create("qla4xxx_srbs", sizeof(struct srb), 0,
|
|
SLAB_HWCACHE_ALIGN, NULL);
|
|
if (srb_cachep == NULL) {
|
|
printk(KERN_ERR
|
|
"%s: Unable to allocate SRB cache..."
|
|
"Failing load!\n", DRIVER_NAME);
|
|
ret = -ENOMEM;
|
|
goto no_srp_cache;
|
|
}
|
|
|
|
/* Derive version string. */
|
|
strcpy(qla4xxx_version_str, QLA4XXX_DRIVER_VERSION);
|
|
if (ql4xextended_error_logging)
|
|
strcat(qla4xxx_version_str, "-debug");
|
|
|
|
qla4xxx_scsi_transport =
|
|
iscsi_register_transport(&qla4xxx_iscsi_transport);
|
|
if (!qla4xxx_scsi_transport){
|
|
ret = -ENODEV;
|
|
goto release_srb_cache;
|
|
}
|
|
|
|
ret = pci_register_driver(&qla4xxx_pci_driver);
|
|
if (ret)
|
|
goto unregister_transport;
|
|
|
|
printk(KERN_INFO "QLogic iSCSI HBA Driver\n");
|
|
return 0;
|
|
|
|
unregister_transport:
|
|
iscsi_unregister_transport(&qla4xxx_iscsi_transport);
|
|
release_srb_cache:
|
|
kmem_cache_destroy(srb_cachep);
|
|
no_srp_cache:
|
|
return ret;
|
|
}
|
|
|
|
static void __exit qla4xxx_module_exit(void)
|
|
{
|
|
pci_unregister_driver(&qla4xxx_pci_driver);
|
|
iscsi_unregister_transport(&qla4xxx_iscsi_transport);
|
|
kmem_cache_destroy(srb_cachep);
|
|
}
|
|
|
|
module_init(qla4xxx_module_init);
|
|
module_exit(qla4xxx_module_exit);
|
|
|
|
MODULE_AUTHOR("QLogic Corporation");
|
|
MODULE_DESCRIPTION("QLogic iSCSI HBA Driver");
|
|
MODULE_LICENSE("GPL");
|
|
MODULE_VERSION(QLA4XXX_DRIVER_VERSION);
|