This patch contains the following:
1. when hba completion status is good, check for iscsi transport errors (underflow/overflow) prior to checking the scsi status
2. New firmware requires that one marker iocb be issued for each task management command. The patch issues marker iocb immediately following a LUN or Target reset.
Signed-off-by: David C Somayajulu <david.somayajulu@xxxxxxxxxx>
----
drivers/scsi/qla4xxx/ql4_fw.h | 3 +-
drivers/scsi/qla4xxx/ql4_glbl.h | 2 +
drivers/scsi/qla4xxx/ql4_iocb.c | 14 ++----------
drivers/scsi/qla4xxx/ql4_isr.c | 40 ++++----------------------------------
drivers/scsi/qla4xxx/ql4_os.c | 20 +++++++++++++-----
5 files changed, 26 insertions(+), 53 deletions(-)
diff --git a/drivers/scsi/qla4xxx/ql4_fw.h b/drivers/scsi/qla4xxx/ql4_fw.h
index ed8ee66..1b667a7 100644
--- a/drivers/scsi/qla4xxx/ql4_fw.h
+++ b/drivers/scsi/qla4xxx/ql4_fw.h
@@ -678,7 +678,8 @@ struct qla4_marker_entry {
uint32_t system_defined; /* 04-07 */
uint16_t target; /* 08-09 */
uint16_t modifier; /* 0A-0B */
-#define MM_LUN_RESET 0
+#define MM_LUN_RESET 0
+#define MM_TGT_WARM_RESET 1
uint16_t flags; /* 0C-0D */
uint16_t reserved1; /* 0E-0F */
diff --git a/drivers/scsi/qla4xxx/ql4_glbl.h b/drivers/scsi/qla4xxx/ql4_glbl.h
index b403a17..96ebfb0 100644
--- a/drivers/scsi/qla4xxx/ql4_glbl.h
+++ b/drivers/scsi/qla4xxx/ql4_glbl.h
@@ -70,6 +70,8 @@ int qla4xxx_reinitialize_ddb_list(struct
int qla4xxx_process_ddb_changed(struct scsi_qla_host * ha,
uint32_t fw_ddb_index, uint32_t state);
void qla4xxx_dump_buffer(void *b, uint32_t size);
+int qla4xxx_send_marker_iocb(struct scsi_qla_host *ha,
+ struct ddb_entry *ddb_entry, int lun, uint16_t mrkr_mod);
extern int ql4xextended_error_logging;
extern int ql4xdiscoverywait;
diff --git a/drivers/scsi/qla4xxx/ql4_iocb.c b/drivers/scsi/qla4xxx/ql4_iocb.c
index e4461b5..912a674 100644
--- a/drivers/scsi/qla4xxx/ql4_iocb.c
+++ b/drivers/scsi/qla4xxx/ql4_iocb.c
@@ -66,8 +66,8 @@ static int qla4xxx_get_req_pkt(struct sc
*
* This routine issues a marker IOCB.
**/
-static int qla4xxx_send_marker_iocb(struct scsi_qla_host *ha,
- struct ddb_entry *ddb_entry, int lun)
+int qla4xxx_send_marker_iocb(struct scsi_qla_host *ha,
+ struct ddb_entry *ddb_entry, int lun, uint16_t mrkr_mod)
{
struct qla4_marker_entry *marker_entry;
unsigned long flags = 0;
@@ -87,7 +87,7 @@ static int qla4xxx_send_marker_iocb(stru
marker_entry->hdr.entryType = ET_MARKER;
marker_entry->hdr.entryCount = 1;
marker_entry->target = cpu_to_le16(ddb_entry->fw_ddb_index);
- marker_entry->modifier = cpu_to_le16(MM_LUN_RESET);
+ marker_entry->modifier = cpu_to_le16(mrkr_mod);
int_to_scsilun(lun, &marker_entry->lun);
wmb();
@@ -210,14 +210,6 @@ int qla4xxx_send_command_to_isp(struct s
/* Get real lun and adapter */
ddb_entry = srb->ddb;
- /* Send marker(s) if needed. */
- if (ha->marker_needed == 1) {
- if (qla4xxx_send_marker_iocb(ha, ddb_entry,
- cmd->device->lun) != QLA_SUCCESS)
- return QLA_ERROR;
-
- ha->marker_needed = 0;
- }
tot_dsds = 0;
/* Acquire hardware specific lock */
diff --git a/drivers/scsi/qla4xxx/ql4_isr.c b/drivers/scsi/qla4xxx/ql4_isr.c
index fc84db4..a91a57c 100644
--- a/drivers/scsi/qla4xxx/ql4_isr.c
+++ b/drivers/scsi/qla4xxx/ql4_isr.c
@@ -11,28 +11,6 @@
#include "ql4_inline.h"
/**
- * qla2x00_process_completed_request() - Process a Fast Post response.
- * @ha: SCSI driver HA context
- * @index: SRB index
- **/
-static void qla4xxx_process_completed_request(struct scsi_qla_host *ha,
- uint32_t index)
-{
- struct srb *srb;
-
- srb = qla4xxx_del_from_active_array(ha, index);
- if (srb) {
- /* Save ISP completion status */
- srb->cmd->result = DID_OK << 16;
- qla4xxx_srb_compl(ha, srb);
- } else {
- DEBUG2(printk("scsi%ld: Invalid ISP SCSI completion handle = "
- "%d\n", ha->host_no, index));
- set_bit(DPC_RESET_HA, &ha->dpc_flags);
- }
-}
-
-/**
* qla4xxx_status_entry - processes status IOCBs
* @ha: Pointer to host adapter structure.
* @sts_entry: Pointer to status entry structure.
@@ -47,14 +25,6 @@ static void qla4xxx_status_entry(struct
uint32_t residual;
uint16_t sensebytecnt;
- if (sts_entry->completionStatus == SCS_COMPLETE &&
- sts_entry->scsiStatus == 0) {
- qla4xxx_process_completed_request(ha,
- le32_to_cpu(sts_entry->
- handle));
- return;
- }
-
srb = qla4xxx_del_from_active_array(ha, le32_to_cpu(sts_entry->handle));
if (!srb) {
/* FIXMEdg: Don't we need to reset ISP in this case??? */
@@ -62,6 +32,9 @@ static void qla4xxx_status_entry(struct
"handle 0x%x, sp=%p. This cmd may have already "
"been completed.\n", ha->host_no, __func__,
le32_to_cpu(sts_entry->handle), srb));
+ dev_warn(&ha->pdev->dev, "%s invalid status entry:"
+ " handle=0x%0x\n", __func__, sts_entry->handle);
+ set_bit(DPC_RESET_HA, &ha->dpc_flags);
return;
}
@@ -88,10 +61,6 @@ static void qla4xxx_status_entry(struct
scsi_status = sts_entry->scsiStatus;
switch (sts_entry->completionStatus) {
case SCS_COMPLETE:
- if (scsi_status == 0) {
- cmd->result = DID_OK << 16;
- break;
- }
if (sts_entry->iscsiFlags & ISCSI_FLAG_RESIDUAL_OVER) {
cmd->result = DID_ERROR << 16;
@@ -100,7 +69,8 @@ static void qla4xxx_status_entry(struct
if (sts_entry->iscsiFlags &ISCSI_FLAG_RESIDUAL_UNDER) {
scsi_set_resid(cmd, residual);
- if ((scsi_bufflen(cmd) - residual) < cmd->underflow) {
+ if (!scsi_status && ((scsi_bufflen(cmd) - residual) <
+ cmd->underflow)) {
cmd->result = DID_ERROR << 16;
diff --git a/drivers/scsi/qla4xxx/ql4_os.c b/drivers/scsi/qla4xxx/ql4_os.c
index 31e605c..0c78694 100644
--- a/drivers/scsi/qla4xxx/ql4_os.c
+++ b/drivers/scsi/qla4xxx/ql4_os.c
@@ -1552,9 +1552,6 @@ static int qla4xxx_eh_device_reset(struc
goto eh_dev_reset_done;
}
- /* Send marker. */
- ha->marker_needed = 1;
-
if (qla4xxx_eh_wait_for_commands(ha, scsi_target(cmd->device),
cmd->device)) {
dev_info(&ha->pdev->dev,
@@ -1563,6 +1560,11 @@ static int qla4xxx_eh_device_reset(struc
goto eh_dev_reset_done;
}
+ /* Send marker. */
+ if (qla4xxx_send_marker_iocb(ha, ddb_entry, cmd->device->lun,
+ MM_LUN_RESET) != QLA_SUCCESS)
+ goto eh_dev_reset_done;
+
dev_info(&ha->pdev->dev,
"scsi(%ld:%d:%d:%d): DEVICE RESET SUCCEEDED.\n",
ha->host_no, cmd->device->channel, cmd->device->id,
@@ -1606,9 +1608,6 @@ static int qla4xxx_eh_target_reset(struc
return FAILED;
}
- /* Send marker. */
- ha->marker_needed = 1;
-
if (qla4xxx_eh_wait_for_commands(ha, scsi_target(cmd->device),
NULL)) {
starget_printk(KERN_INFO, scsi_target(cmd->device),
@@ -1617,6 +1616,15 @@ static int qla4xxx_eh_target_reset(struc
return FAILED;
}
+ /* Send marker. */
+ if (qla4xxx_send_marker_iocb(ha, ddb_entry, cmd->device->lun,
+ MM_TGT_WARM_RESET) != QLA_SUCCESS) {
+ starget_printk(KERN_INFO, scsi_target(cmd->device),
+ "WARM TARGET DEVICE RESET FAILED - "
+ "marker iocb failed.\n");
+ return FAILED;
+ }
+
starget_printk(KERN_INFO, scsi_target(cmd->device),
"WARM TARGET RESET SUCCEEDED.\n");
return SUCCESS;
--
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