From 4fdfefe52944f5c4132a372ed5c208962a73c3f2 Mon Sep 17 00:00:00 2001 From: Andrew Vasquez Date: Thu, 27 Oct 2005 11:09:48 -0700 Subject: [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 Signed-off-by: James Bottomley --- drivers/scsi/qla2xxx/qla_def.h | 8 ++++++++ 1 file changed, 8 insertions(+) (limited to 'drivers/scsi/qla2xxx/qla_def.h') diff --git a/drivers/scsi/qla2xxx/qla_def.h b/drivers/scsi/qla2xxx/qla_def.h index b455c31405e4..522bb2d3f084 100644 --- a/drivers/scsi/qla2xxx/qla_def.h +++ b/drivers/scsi/qla2xxx/qla_def.h @@ -823,6 +823,11 @@ typedef struct { #define PD_STATE_WAIT_PORT_LOGOUT_ACK 11 +#define QLA_ZIO_MODE_5 (BIT_2 | BIT_0) +#define QLA_ZIO_MODE_6 (BIT_2 | BIT_1) +#define QLA_ZIO_DISABLED 0 +#define QLA_ZIO_DEFAULT_TIMER 2 + /* * ISP Initialization Control Block. * Little endian except where noted. @@ -2470,6 +2475,9 @@ typedef struct scsi_qla_host { /* Needed for BEACON */ uint16_t beacon_blink_led; uint16_t beacon_green_on; + + uint16_t zio_mode; + uint16_t zio_timer; } scsi_qla_host_t; -- cgit v1.2.3