From: Santosh Vernekar <santosh.verne...@qlogic.com>
Earlier IDC-TIME-EXTEND aen was a nop and ignored by driver.
We now have to handle the aen so that other protocol drivers can use time
extension during some loopback operations.
Signed-off-by: Santosh Vernekar <santosh.verne...@qlogic.com>
Signed-off-by: Saurav Kashyap <saurav.kash...@qlogic.com>
---
drivers/scsi/qla2xxx/qla_bsg.c | 17 ++++++++++++-
drivers/scsi/qla2xxx/qla_dbg.c | 2 +-
drivers/scsi/qla2xxx/qla_def.h | 1 +
drivers/scsi/qla2xxx/qla_isr.c | 47 +++++++++++++++++++++++++--------------
4 files changed, 47 insertions(+), 20 deletions(-)
diff --git a/drivers/scsi/qla2xxx/qla_bsg.c b/drivers/scsi/qla2xxx/qla_bsg.c
index fb5bd6e..b989add 100644
--- a/drivers/scsi/qla2xxx/qla_bsg.c
+++ b/drivers/scsi/qla2xxx/qla_bsg.c
@@ -627,6 +627,7 @@ qla81xx_set_loopback_mode(scsi_qla_host_t *vha, uint16_t
*config,
{
int ret = 0;
int rval = 0;
+ unsigned long rem_tmo = 0, current_tmo = 0;
struct qla_hw_data *ha = vha->hw;
if (!IS_QLA81XX(ha) && !IS_QLA8031(ha) && !IS_QLA8044(ha))
@@ -652,8 +653,19 @@ qla81xx_set_loopback_mode(scsi_qla_host_t *vha, uint16_t
*config,
}
/* Wait for DCBX complete event */
- if (!wait_for_completion_timeout(&ha->dcbx_comp,
- (DCBX_COMP_TIMEOUT * HZ))) {
+ current_tmo = DCBX_COMP_TIMEOUT * HZ;
+ while (1) {
+ rem_tmo = wait_for_completion_timeout(&ha->dcbx_comp,
+ current_tmo);
+ if (!ha->idc_extend_tmo || rem_tmo) {
+ ha->idc_extend_tmo = 0;
+ break;
+ }
+ current_tmo = ha->idc_extend_tmo * HZ;
+ ha->idc_extend_tmo = 0;
+ }
+
+ if (!rem_tmo) {
ql_dbg(ql_dbg_user, vha, 0x7022,
"DCBX completion not received.\n");
ret = qla81xx_reset_loopback_mode(vha, new_config, 0, 0);
@@ -678,6 +690,7 @@ qla81xx_set_loopback_mode(scsi_qla_host_t *vha, uint16_t
*config,
}
ha->notify_dcbx_comp = 0;
+ ha->idc_extend_tmo = 0;
done_set_internal:
return rval;
diff --git a/drivers/scsi/qla2xxx/qla_dbg.c b/drivers/scsi/qla2xxx/qla_dbg.c
index ca6bcf6..f192c52 100644
--- a/drivers/scsi/qla2xxx/qla_dbg.c
+++ b/drivers/scsi/qla2xxx/qla_dbg.c
@@ -26,7 +26,7 @@
* | | | 0x3036,0x3038 |
* | | | 0x303a
|
* | DPC Thread | 0x4022 | 0x4002,0x4013 |
- * | Async Events | 0x5086 | 0x502b-0x502f |
+ * | Async Events | 0x5087 | 0x502b-0x502f |
* | | | 0x5047,0x5052 |
* | | | 0x5040,0x5075 |
* | | | 0x503d,0x5044 |
diff --git a/drivers/scsi/qla2xxx/qla_def.h b/drivers/scsi/qla2xxx/qla_def.h
index d6eefb8..93db74e 100644
--- a/drivers/scsi/qla2xxx/qla_def.h
+++ b/drivers/scsi/qla2xxx/qla_def.h
@@ -3292,6 +3292,7 @@ struct qla_hw_data {
/* QLA83XX IDC specific fields */
uint32_t idc_audit_ts;
+ uint32_t idc_extend_tmo;
/* DPC low-priority workqueue */
struct workqueue_struct *dpc_lp_wq;
diff --git a/drivers/scsi/qla2xxx/qla_isr.c b/drivers/scsi/qla2xxx/qla_isr.c
index bbc24d3..df1b30b 100644
--- a/drivers/scsi/qla2xxx/qla_isr.c
+++ b/drivers/scsi/qla2xxx/qla_isr.c
@@ -282,25 +282,38 @@ qla81xx_idc_event(scsi_qla_host_t *vha, uint16_t aen,
uint16_t descr)
"%04x %04x %04x %04x %04x %04x %04x.\n",
event[aen & 0xff], mb[0], mb[1], mb[2], mb[3],
mb[4], mb[5], mb[6]);
- if ((aen == MBA_IDC_COMPLETE && mb[1] >> 15)) {
- vha->hw->flags.idc_compl_status = 1;
- if (vha->hw->notify_dcbx_comp)
- complete(&vha->hw->dcbx_comp);
- }
-
- /* Acknowledgement needed? [Notify && non-zero timeout]. */
- timeout = (descr >> 8) & 0xf;
- if (aen != MBA_IDC_NOTIFY || !timeout)
- return;
+ switch (aen) {
+ /* Handle IDC Error completion case. */
+ case MBA_IDC_COMPLETE:
+ if (mb[1] >> 15) {
+ vha->hw->flags.idc_compl_status = 1;
+ if (vha->hw->notify_dcbx_comp)
+ complete(&vha->hw->dcbx_comp);
+ }
+ break;
- ql_dbg(ql_dbg_async, vha, 0x5022,
- "%lu Inter-Driver Communication %s -- ACK timeout=%d.\n",
- vha->host_no, event[aen & 0xff], timeout);
+ case MBA_IDC_NOTIFY:
+ /* Acknowledgement needed? [Notify && non-zero timeout]. */
+ timeout = (descr >> 8) & 0xf;
+ ql_dbg(ql_dbg_async, vha, 0x5022,
+ "%lu Inter-Driver Communication %s -- ACK timeout=%d.\n",
+ vha->host_no, event[aen & 0xff], timeout);
- rval = qla2x00_post_idc_ack_work(vha, mb);
- if (rval != QLA_SUCCESS)
- ql_log(ql_log_warn, vha, 0x5023,
- "IDC failed to post ACK.\n");
+ if (!timeout)
+ return;
+ rval = qla2x00_post_idc_ack_work(vha, mb);
+ if (rval != QLA_SUCCESS)
+ ql_log(ql_log_warn, vha, 0x5023,
+ "IDC failed to post ACK.\n");
+ break;
+ case MBA_IDC_TIME_EXT:
+ vha->hw->idc_extend_tmo = descr;
+ ql_dbg(ql_dbg_async, vha, 0x5087,
+ "%lu Inter-Driver Communication %s -- "
+ "Extend timeout by=%d.\n",
+ vha->host_no, event[aen & 0xff], vha->hw->idc_extend_tmo);
+ break;
+ }
}
#define LS_UNKNOWN 2
--
1.7.7
--
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