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authorAndrew Vasquez <andrew.vasquez@qlogic.com>2005-10-27 11:09:48 -0700
committerJames Bottomley <jejb@mulgrave.(none)>2005-10-28 11:52:11 -0500
commit4fdfefe52944f5c4132a372ed5c208962a73c3f2 (patch)
tree23e4c9cb3f899d82e07fcfc55d75744b919415e5 /drivers/scsi/qla2xxx/qla_isr.c
parent0eedfcf0cdac30b14d1e6c99abc6604347ef0af8 (diff)
[SCSI] qla2xxx: Add support to dynamically enable/disable ZIO.
ISP23xx and ISP24xx chips have support for an adaptive method of posting SCSI command completions for multiple SCSI commands during a single system interrupt. SCSI commands are placed on the system response queue without interrupting the host until 1) a delay timer expires; or 2) a SCSI command completes with an error. As long as the host software (qla2xxx) services the response queue for completions (this polling is done during queuecommand()) within the 'delay timer' period, the firmware will not generate system interrupt. Signed-off-by: Andrew Vasquez <andrew.vasquez@qlogic.com> Signed-off-by: James Bottomley <James.Bottomley@SteelEye.com>
Diffstat (limited to 'drivers/scsi/qla2xxx/qla_isr.c')
-rw-r--r--drivers/scsi/qla2xxx/qla_isr.c7
1 files changed, 4 insertions, 3 deletions
diff --git a/drivers/scsi/qla2xxx/qla_isr.c b/drivers/scsi/qla2xxx/qla_isr.c
index c255bb0268a..cf6c6ce0b42 100644
--- a/drivers/scsi/qla2xxx/qla_isr.c
+++ b/drivers/scsi/qla2xxx/qla_isr.c
@@ -21,13 +21,11 @@
static void qla2x00_mbx_completion(scsi_qla_host_t *, uint16_t);
static void qla2x00_async_event(scsi_qla_host_t *, uint16_t *);
static void qla2x00_process_completed_request(struct scsi_qla_host *, uint32_t);
-void qla2x00_process_response_queue(struct scsi_qla_host *);
static void qla2x00_status_entry(scsi_qla_host_t *, void *);
static void qla2x00_status_cont_entry(scsi_qla_host_t *, sts_cont_entry_t *);
static void qla2x00_error_entry(scsi_qla_host_t *, sts_entry_t *);
static void qla2x00_ms_entry(scsi_qla_host_t *, ms_iocb_entry_t *);
-void qla24xx_process_response_queue(scsi_qla_host_t *);
static void qla24xx_ms_entry(scsi_qla_host_t *, struct ct_entry_24xx *);
/**
@@ -651,7 +649,10 @@ qla2x00_async_event(scsi_qla_host_t *ha, uint16_t *mb)
"scsi(%ld): [R|Z]IO update completion.\n",
ha->host_no));
- qla2x00_process_response_queue(ha);
+ if (IS_QLA24XX(ha) || IS_QLA25XX(ha))
+ qla24xx_process_response_queue(ha);
+ else
+ qla2x00_process_response_queue(ha);
break;
case MBA_DISCARD_RND_FRAME: