From: Vikas Chaudhary <vikas.chaudhary@xxxxxxxxxx>
Handles SCSI aborts.
Signed-off-by: Karen Higgins <karen.higgins@xxxxxxxxxx>
Signed-off-by: Vikas Chaudhary <vikas.chaudhary@xxxxxxxxxx>
Signed-off-by: Ravi Anand <ravi.anand@xxxxxxxxxx>
---
drivers/scsi/qla4xxx/ql4_fw.h | 1 +
drivers/scsi/qla4xxx/ql4_glbl.h | 1 +
drivers/scsi/qla4xxx/ql4_mbx.c | 45 ++++++++++++
drivers/scsi/qla4xxx/ql4_os.c | 147 +++++++++++++++++++++++++++++++++++++++
4 files changed, 194 insertions(+), 0 deletions(-)
diff --git a/drivers/scsi/qla4xxx/ql4_fw.h b/drivers/scsi/qla4xxx/ql4_fw.h
index 835c95c..0274341 100644
--- a/drivers/scsi/qla4xxx/ql4_fw.h
+++ b/drivers/scsi/qla4xxx/ql4_fw.h
@@ -215,6 +215,7 @@ union external_hw_config_reg {
/* Mailbox command definitions */
#define MBOX_CMD_ABOUT_FW 0x0009
#define MBOX_CMD_PING 0x000B
+#define MBOX_CMD_ABORT_TASK 0x0015
#define MBOX_CMD_LUN_RESET 0x0016
#define MBOX_CMD_TARGET_WARM_RESET 0x0017
#define MBOX_CMD_GET_MANAGEMENT_DATA 0x001E
diff --git a/drivers/scsi/qla4xxx/ql4_glbl.h b/drivers/scsi/qla4xxx/ql4_glbl.h
index 4218c75..5aae45e 100644
--- a/drivers/scsi/qla4xxx/ql4_glbl.h
+++ b/drivers/scsi/qla4xxx/ql4_glbl.h
@@ -25,6 +25,7 @@ void qla4xxx_process_aen(struct scsi_qla_host * ha, uint8_t process_aen);
int qla4xxx_get_dhcp_ip_address(struct scsi_qla_host * ha);
int qla4xxx_relogin_device(struct scsi_qla_host * ha,
struct ddb_entry * ddb_entry);
+int qla4xxx_abort_task(struct scsi_qla_host *ha, struct srb *srb);
int qla4xxx_reset_lun(struct scsi_qla_host * ha, struct ddb_entry * ddb_entry,
int lun);
int qla4xxx_reset_target(struct scsi_qla_host * ha,
diff --git a/drivers/scsi/qla4xxx/ql4_mbx.c b/drivers/scsi/qla4xxx/ql4_mbx.c
index 8cb2dae..02b7b0d 100644
--- a/drivers/scsi/qla4xxx/ql4_mbx.c
+++ b/drivers/scsi/qla4xxx/ql4_mbx.c
@@ -740,6 +740,51 @@ 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;
+
+ DEBUG2(printk("scsi%ld:%d:%d:%d: abort task issued\n", ha->host_no,
+ cmd->device->channel, cmd->device->id, cmd->device->lun));
+
+ /*
+ * 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));
+
+ mbox_cmd[0] = MBOX_CMD_ABORT_TASK;
+ mbox_cmd[1] = srb->fw_ddb_index;
+ mbox_cmd[2] = (unsigned long)(unsigned char *)cmd->host_scribble;
+ mbox_cmd[5] = 0x01; /* Immediate Command Enable */
+
+ 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("scsi%ld:%d:%d:%d: abort task FAILED: ", ha->host_no,
+ cmd->device->channel, cmd->device->id, cmd->device->lun));
+ DEBUG2(printk("mbx0=%04X, mb1=%04X, mb2=%04X, mb3=%04X, mb4=%04X\n",
+ 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
diff --git a/drivers/scsi/qla4xxx/ql4_os.c b/drivers/scsi/qla4xxx/ql4_os.c
index b780d29..3d95061 100644
--- a/drivers/scsi/qla4xxx/ql4_os.c
+++ b/drivers/scsi/qla4xxx/ql4_os.c
@@ -73,6 +73,7 @@ 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);
@@ -87,6 +88,7 @@ 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,
@@ -1611,6 +1613,151 @@ 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;
+ struct srb *srb = NULL;
+ struct ddb_entry *ddb_entry;
+ struct scsi_cmnd *srb_cmd = NULL;
+ int ret = SUCCESS;
+ unsigned int channel;
+ unsigned int id;
+ unsigned int lun;
+ unsigned long serial;
+ unsigned long flags = 0;
+ int i = 0;
+ int got_ref = 0;
+ unsigned long wait_online;
+
+ if (cmd == NULL) {
+ DEBUG2(printk("ABORT - **** SCSI mid-layer passing in NULL cmd\n"));
+ return SUCCESS;
+ }
+
+ ha = to_qla_host(cmd->device->host);
+ ddb_entry = cmd->device->hostdata;
+ channel = cmd->device->channel;
+ id = cmd->device->id;
+ lun = cmd->device->lun;
+ serial = cmd->serial_number;
+
+ if (!ddb_entry) {
+ DEBUG2(printk("scsi%ld: ABORT - NULL ddb entry.\n", ha->host_no));
+ return FAILED;
+ }
+
+ if (!cmd->SCp.ptr) {
+ DEBUG2(printk("scsi%ld: ABORT - cmd already completed.\n",
+ ha->host_no));
+ return ret;
+ }
+
+
+
+ srb = (struct srb *) cmd->SCp.ptr;
+
+ dev_info(&ha->pdev->dev, "scsi%ld:%d:%d:%d: ABORT ISSUED "
+ "cmd=%p, pid=%ld, ref=%d\n", ha->host_no, channel, id, lun,
+ cmd, serial, atomic_read(&srb->ref_count));
+
+ if (qla4xxx_wait_for_hba_online(ha) != QLA_SUCCESS) {
+ DEBUG2(printk("scsi%ld:%d: %s: Unable to abort task. Adapter "
+ "DEAD.\n", ha->host_no, cmd->device->channel
+ , __func__));
+
+ return FAILED;
+ }
+
+ /* Check active list for command */
+ spin_lock_irqsave(&ha->hardware_lock, flags);
+ for (i = 1; i < MAX_SRBS; i++) {
+ srb_cmd = scsi_host_find_tag(ha->host, i);
+ if (srb_cmd == NULL)
+ continue;
+
+ srb = (struct srb *)srb_cmd->host_scribble;
+ if (srb == NULL)
+ continue;
+
+ if (srb->cmd != cmd)
+ continue;
+
+ DEBUG2(printk("scsi%ld:%d:%d:%d %s: aborting srb %p from RISC. "
+ "pid=%ld.\n", ha->host_no, channel, id, lun,
+ __func__, srb, serial));
+ DEBUG3(qla4xxx_print_scsi_cmd(cmd));
+
+ /* Get a reference to the sp and drop the lock.*/
+ sp_get(srb);
+ got_ref++;
+
+ spin_unlock_irqrestore(&ha->hardware_lock, flags);
+
+ /*
+ * If device is not online wait for 10 sec for device to come online,
+ * else return error and do not issue abort task.
+ */
+ if (atomic_read(&ddb_entry->state) != DDB_STATE_ONLINE) {
+ wait_online = jiffies + (DEVICE_ONLINE_TOV * HZ);
+ while (time_before(jiffies, wait_online)) {
+ set_current_state(TASK_INTERRUPTIBLE);
+ schedule_timeout(HZ);
+ if (atomic_read(&ddb_entry->state) == DDB_STATE_ONLINE)
+ break;
+ }
+ if (atomic_read(&ddb_entry->state) != DDB_STATE_ONLINE) {
+ DEBUG2(printk("scsi%ld:%d: %s: Unable to abort task."
+ "Device is not online.\n", ha->host_no
+ , cmd->device->channel, __func__));
+
+ return FAILED;
+ }
+ }
+
+ if (qla4xxx_abort_task(ha, srb) != QLA_SUCCESS) {
+ dev_info(&ha->pdev->dev,
+ "scsi%ld:%d:%d:%d: ABORT TASK - FAILED.\n",
+ ha->host_no, channel, id, lun);
+ } else {
+ dev_info(&ha->pdev->dev,
+ "scsi%ld:%d:%d:%d: ABORT TASK - mbx success.\n",
+ ha->host_no, channel, id, lun);
+ }
+ spin_lock_irqsave(&ha->hardware_lock, flags);
+ break;
+ }
+ spin_unlock_irqrestore(&ha->hardware_lock, flags);
+
+ /* Wait for command to complete */
+ spin_unlock_irqrestore(&ha->hardware_lock, flags);
+ if (qla4xxx_eh_wait_on_command(ha, cmd, got_ref)) {
+ dev_info(&ha->pdev->dev,
+ "scsi%ld:%d:%d:%d: ABORT SUCCEEDED - "
+ "cmd returned back to OS.\n",
+ ha->host_no, channel, id, lun);
+ ret = SUCCESS;
+ }
+
+ if (got_ref)
+ sp_put(ha, srb);
+
+ DEBUG2(printk("scsi%ld:%d:%d:%d: ABORT cmd=%p, pid=%ld, ref=%d, "
+ "ret=%x\n", ha->host_no, channel, id, lun, cmd,
+ serial, atomic_read(&srb->ref_count), ret));
+
+ return ret;
+}
+
+
+
+
+/**
* qla4xxx_eh_device_reset - callback for target reset.
* @cmd: Pointer to Linux's SCSI command structure
*
--
1.6.0.2
--
To unsubscribe from this list: send the line "unsubscribe linux-scsi" in
the body of a message to majordomo@xxxxxxxxxxxxxxx
More majordomo info at http://vger.kernel.org/majordomo-info.html
