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authorMike Christie <michaelc@cs.wisc.edu>2008-02-29 18:25:20 -0600
committerJames Bottomley <James.Bottomley@HansenPartnership.com>2008-04-07 12:15:43 -0500
commitce5450392fa3ab54f0a84aa3b7589f8d6f2a58af (patch)
tree17b051094ab95842b41d9ef3bdb5b2a1ef20370a /drivers/scsi/qla4xxx/ql4_mbx.c
parent30bd7df8ced23eefec87a5cda96dc99b002ed9da (diff)
[SCSI] qla4xxx: Add target reset functionality
This patch adds target reset functionalty. Signed-off-by: Mike Christie <michaelc@cs.wisc.edu> Acked-by: David Somayajulu <david.somayajulu@qlogic.com> Signed-off-by: James Bottomley <James.Bottomley@HansenPartnership.com>
Diffstat (limited to 'drivers/scsi/qla4xxx/ql4_mbx.c')
-rw-r--r--drivers/scsi/qla4xxx/ql4_mbx.c39
1 files changed, 39 insertions, 0 deletions
diff --git a/drivers/scsi/qla4xxx/ql4_mbx.c b/drivers/scsi/qla4xxx/ql4_mbx.c
index 35cd73c72a6..c577d79bd7e 100644
--- a/drivers/scsi/qla4xxx/ql4_mbx.c
+++ b/drivers/scsi/qla4xxx/ql4_mbx.c
@@ -713,6 +713,45 @@ int qla4xxx_reset_lun(struct scsi_qla_host * ha, struct ddb_entry * ddb_entry,
return status;
}
+/**
+ * qla4xxx_reset_target - issues target Reset
+ * @ha: Pointer to host adapter structure.
+ * @db_entry: Pointer to device database entry
+ * @un_entry: Pointer to lun entry structure
+ *
+ * This routine performs a TARGET RESET on the specified target.
+ * The caller must ensure that the ddb_entry pointers
+ * are valid before calling this routine.
+ **/
+int qla4xxx_reset_target(struct scsi_qla_host *ha,
+ struct ddb_entry *ddb_entry)
+{
+ uint32_t mbox_cmd[MBOX_REG_COUNT];
+ uint32_t mbox_sts[MBOX_REG_COUNT];
+ int status = QLA_SUCCESS;
+
+ DEBUG2(printk("scsi%ld:%d: target reset issued\n", ha->host_no,
+ ddb_entry->os_target_id));
+
+ /*
+ * Send target reset command to ISP, so that the ISP will return all
+ * outstanding requests with RESET status
+ */
+ memset(&mbox_cmd, 0, sizeof(mbox_cmd));
+ memset(&mbox_sts, 0, sizeof(mbox_sts));
+
+ mbox_cmd[0] = MBOX_CMD_TARGET_WARM_RESET;
+ mbox_cmd[1] = ddb_entry->fw_ddb_index;
+ mbox_cmd[5] = 0x01; /* Immediate Command Enable */
+
+ qla4xxx_mailbox_command(ha, MBOX_REG_COUNT, 1, &mbox_cmd[0],
+ &mbox_sts[0]);
+ if (mbox_sts[0] != MBOX_STS_COMMAND_COMPLETE &&
+ mbox_sts[0] != MBOX_STS_COMMAND_ERROR)
+ status = QLA_ERROR;
+
+ return status;
+}
int qla4xxx_get_flash(struct scsi_qla_host * ha, dma_addr_t dma_addr,
uint32_t offset, uint32_t len)