diff options
Diffstat (limited to 'drivers/scsi/qla4xxx/ql4_mbx.c')
| -rw-r--r-- | drivers/scsi/qla4xxx/ql4_mbx.c | 53 |
1 files changed, 53 insertions, 0 deletions
diff --git a/drivers/scsi/qla4xxx/ql4_mbx.c b/drivers/scsi/qla4xxx/ql4_mbx.c index 43581ce3a1b..e1315cd8c26 100644 --- a/drivers/scsi/qla4xxx/ql4_mbx.c +++ b/drivers/scsi/qla4xxx/ql4_mbx.c @@ -762,6 +762,59 @@ exit_get_event_log: } /** + * qla4xxx_abort_task - issues Abort Task + * @ha: Pointer to host adapter structure. + * @srb: Pointer to srb entry + * + * This routine performs a LUN RESET on the specified target/lun. + * The caller must ensure that the ddb_entry and lun_entry pointers + * are valid before calling this routine. + **/ +int qla4xxx_abort_task(struct scsi_qla_host *ha, struct srb *srb) +{ + uint32_t mbox_cmd[MBOX_REG_COUNT]; + uint32_t mbox_sts[MBOX_REG_COUNT]; + struct scsi_cmnd *cmd = srb->cmd; + int status = QLA_SUCCESS; + unsigned long flags = 0; + uint32_t index; + + /* + * Send abort task command to ISP, so that the ISP will return + * request with ABORT status + */ + memset(&mbox_cmd, 0, sizeof(mbox_cmd)); + memset(&mbox_sts, 0, sizeof(mbox_sts)); + + spin_lock_irqsave(&ha->hardware_lock, flags); + index = (unsigned long)(unsigned char *)cmd->host_scribble; + spin_unlock_irqrestore(&ha->hardware_lock, flags); + + /* Firmware already posted completion on response queue */ + if (index == MAX_SRBS) + return status; + + mbox_cmd[0] = MBOX_CMD_ABORT_TASK; + mbox_cmd[1] = srb->fw_ddb_index; + mbox_cmd[2] = index; + /* Immediate Command Enable */ + mbox_cmd[5] = 0x01; + + qla4xxx_mailbox_command(ha, MBOX_REG_COUNT, 5, &mbox_cmd[0], + &mbox_sts[0]); + if (mbox_sts[0] != MBOX_STS_COMMAND_COMPLETE) { + status = QLA_ERROR; + + DEBUG2(printk(KERN_WARNING "scsi%ld:%d:%d: abort task FAILED: " + "mbx0=%04X, mb1=%04X, mb2=%04X, mb3=%04X, mb4=%04X\n", + ha->host_no, cmd->device->id, cmd->device->lun, mbox_sts[0], + mbox_sts[1], mbox_sts[2], mbox_sts[3], mbox_sts[4])); + } + + return status; +} + +/** * qla4xxx_reset_lun - issues LUN Reset * @ha: Pointer to host adapter structure. * @db_entry: Pointer to device database entry |