diff options
Diffstat (limited to 'drivers/scsi/qla4xxx/ql4_os.c')
| -rw-r--r-- | drivers/scsi/qla4xxx/ql4_os.c | 68 |
1 files changed, 64 insertions, 4 deletions
diff --git a/drivers/scsi/qla4xxx/ql4_os.c b/drivers/scsi/qla4xxx/ql4_os.c index 2ca43f0..38b1d38 100644 --- a/drivers/scsi/qla4xxx/ql4_os.c +++ b/drivers/scsi/qla4xxx/ql4_os.c @@ -74,6 +74,7 @@ static enum blk_eh_timer_return qla4xxx_eh_cmd_timed_out(struct scsi_cmnd *sc); */ static int qla4xxx_queuecommand(struct scsi_cmnd *cmd, void (*done) (struct scsi_cmnd *)); +static int qla4xxx_eh_abort(struct scsi_cmnd *cmd); static int qla4xxx_eh_device_reset(struct scsi_cmnd *cmd); static int qla4xxx_eh_target_reset(struct scsi_cmnd *cmd); static int qla4xxx_eh_host_reset(struct scsi_cmnd *cmd); @@ -88,6 +89,7 @@ static struct scsi_host_template qla4xxx_driver_template = { .proc_name = DRIVER_NAME, .queuecommand = qla4xxx_queuecommand, + .eh_abort_handler = qla4xxx_eh_abort, .eh_device_reset_handler = qla4xxx_eh_device_reset, .eh_target_reset_handler = qla4xxx_eh_target_reset, .eh_host_reset_handler = qla4xxx_eh_host_reset, @@ -384,7 +386,7 @@ static struct srb* qla4xxx_get_new_srb(struct scsi_qla_host *ha, if (!srb) return srb; - atomic_set(&srb->ref_count, 1); + kref_init(&srb->srb_ref); srb->ha = ha; srb->ddb = ddb_entry; srb->cmd = cmd; @@ -406,9 +408,11 @@ static void qla4xxx_srb_free_dma(struct scsi_qla_host *ha, struct srb *srb) CMD_SP(cmd) = NULL; } -void qla4xxx_srb_compl(struct scsi_qla_host *ha, struct srb *srb) +void qla4xxx_srb_compl(struct kref *ref) { + struct srb *srb = container_of(ref, struct srb, srb_ref); struct scsi_cmnd *cmd = srb->cmd; + struct scsi_qla_host *ha = srb->ha; qla4xxx_srb_free_dma(ha, srb); @@ -887,7 +891,7 @@ static void qla4xxx_flush_active_srbs(struct scsi_qla_host *ha) srb = qla4xxx_del_from_active_array(ha, i); if (srb != NULL) { srb->cmd->result = DID_RESET << 16; - qla4xxx_srb_compl(ha, srb); + kref_put(&srb->srb_ref, qla4xxx_srb_compl); } } spin_unlock_irqrestore(&ha->hardware_lock, flags); @@ -1501,7 +1505,7 @@ struct srb * qla4xxx_del_from_active_array(struct scsi_qla_host *ha, uint32_t in /** * qla4xxx_eh_wait_on_command - waits for command to be returned by firmware - * @ha: actual ha whose done queue will contain the comd 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 @@ -1585,6 +1589,62 @@ static int qla4xxx_eh_wait_for_commands(struct scsi_qla_host *ha, } /** + * 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; + struct srb *srb = NULL; + int ret = SUCCESS; + int wait = 0; + + dev_info(&ha->pdev->dev, + "scsi%ld:%d:%d: Abort command issued cmd=%p, pid=%ld\n", + ha->host_no, id, lun, cmd, serial); + + srb = (struct srb *) CMD_SP(cmd); + + if (!srb) + return SUCCESS; + + kref_get(&srb->srb_ref); + + 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; + } + } + + dev_info(&ha->pdev->dev, + "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 * |