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Diffstat (limited to 'drivers/scsi/qla4xxx/ql4_os.c')
-rw-r--r--drivers/scsi/qla4xxx/ql4_os.c136
1 files changed, 124 insertions, 12 deletions
diff --git a/drivers/scsi/qla4xxx/ql4_os.c b/drivers/scsi/qla4xxx/ql4_os.c
index 83c8b5e4fc8b..38b1d38afca5 100644
--- a/drivers/scsi/qla4xxx/ql4_os.c
+++ b/drivers/scsi/qla4xxx/ql4_os.c
@@ -5,6 +5,7 @@
* See LICENSE.qla4xxx for copyright and licensing details.
*/
#include <linux/moduleparam.h>
+#include <linux/slab.h>
#include <scsi/scsi_tcq.h>
#include <scsi/scsicam.h>
@@ -73,6 +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);
@@ -87,6 +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,
@@ -383,12 +386,12 @@ 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;
srb->flags = 0;
- cmd->SCp.ptr = (void *)srb;
+ CMD_SP(cmd) = (void *)srb;
cmd->scsi_done = done;
return srb;
@@ -402,12 +405,14 @@ static void qla4xxx_srb_free_dma(struct scsi_qla_host *ha, struct srb *srb)
scsi_dma_unmap(cmd);
srb->flags &= ~SRB_DMA_VALID;
}
- cmd->SCp.ptr = NULL;
+ 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);
@@ -684,6 +689,7 @@ static void qla4xxx_timer(struct scsi_qla_host *ha)
test_bit(DPC_RESET_HA_DESTROY_DDB_LIST, &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_AEN, &ha->dpc_flags)) &&
ha->dpc_thread) {
DEBUG2(printk("scsi%ld: %s: scheduling dpc routine"
@@ -885,11 +891,10 @@ 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);
-
}
/**
@@ -1068,6 +1073,54 @@ static void qla4xxx_do_dpc(struct work_struct *work)
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);
+ dev_info(&ha->pdev->dev,
+ "scsi%ld: %s: ddb[%d]"
+ " os[%d] marked"
+ " ONLINE\n",
+ ha->host_no, __func__,
+ ddb_entry->fw_ddb_index,
+ ddb_entry->os_target_id);
+
+ 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)) {
@@ -1429,12 +1482,14 @@ static void qla4xxx_slave_destroy(struct scsi_device *sdev)
struct srb * qla4xxx_del_from_active_array(struct scsi_qla_host *ha, uint32_t index)
{
struct srb *srb = NULL;
- struct scsi_cmnd *cmd;
+ struct scsi_cmnd *cmd = NULL;
- if (!(cmd = scsi_host_find_tag(ha->host, index)))
+ cmd = scsi_host_find_tag(ha->host, index);
+ if (!cmd)
return srb;
- if (!(srb = (struct srb *)cmd->host_scribble))
+ srb = (struct srb *)CMD_SP(cmd);
+ if (!srb)
return srb;
/* update counters */
@@ -1442,14 +1497,15 @@ struct srb * qla4xxx_del_from_active_array(struct scsi_qla_host *ha, uint32_t in
ha->req_q_count += srb->iocb_cnt;
ha->iocb_cnt -= srb->iocb_cnt;
if (srb->cmd)
- srb->cmd->host_scribble = NULL;
+ 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: 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
@@ -1464,7 +1520,7 @@ static int qla4xxx_eh_wait_on_command(struct scsi_qla_host *ha,
do {
/* Checking to see if its returned to OS */
- rp = (struct srb *) cmd->SCp.ptr;
+ rp = (struct srb *) CMD_SP(cmd);
if (rp == NULL) {
done++;
break;
@@ -1533,6 +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
*
generated by cgit v1.2.3 (git 2.39.1) at 2024-12-17 17:21:58 +0100