From 24a081386e4236e10e80af4c62d5f6e68feb2081 Mon Sep 17 00:00:00 2001
From: Andrew Vasquez <andrew.vasquez@qlogic.com>
Date: Tue, 24 Mar 2009 09:08:16 -0700
Subject: [PATCH] [SCSI] qla2xxx: Explicitly set the execution-throttle with
recent ISPs.
Firmware semantics changed for 24xx and above ISPs in their
handling of the specified execution-throttle passed during
firmware initialization. The original codes use of a theoretical
maximum (0xffff, as carried over from earlier ISPs) could in fact
act as a throttle in some circumstances. Now set the value based
of the firmware's own 'resource' (exchange IOCBs) capabilities.
Signed-off-by: Andrew Vasquez <andrew.vasquez@qlogic.com>
Signed-off-by: James Bottomley <James.Bottomley@HansenPartnership.com>
---
drivers/scsi/qla2xxx/qla_def.h | 1 +
drivers/scsi/qla2xxx/qla_init.c | 12 ++++++++----
2 files changed, 9 insertions(+), 4 deletions(-)
diff --git a/drivers/scsi/qla2xxx/qla_def.h b/drivers/scsi/qla2xxx/qla_def.h
index 1a84dbf82510..e3d4d48905ee 100644
--- a/drivers/scsi/qla2xxx/qla_def.h
+++ b/drivers/scsi/qla2xxx/qla_def.h
@@ -2432,6 +2432,7 @@ struct qla_hw_data {
#define RISC_START_ADDRESS_2100 0x1000
#define RISC_START_ADDRESS_2300 0x800
#define RISC_START_ADDRESS_2400 0x100000
+ uint16_t fw_xcb_count;
uint16_t fw_options[16]; /* slots: 1,2,3,10,11 */
uint8_t fw_seriallink_options[4];
diff --git a/drivers/scsi/qla2xxx/qla_init.c b/drivers/scsi/qla2xxx/qla_init.c
index f90fd3774f19..bd7dd84c0648 100644
--- a/drivers/scsi/qla2xxx/qla_init.c
+++ b/drivers/scsi/qla2xxx/qla_init.c
@@ -948,8 +948,9 @@ qla2x00_setup_chip(scsi_qla_host_t *vha)
ha->max_npiv_vports =
MIN_MULTI_ID_FABRIC - 1;
}
- qla2x00_get_resource_cnts(vha, NULL, NULL,
- NULL, NULL, &ha->max_npiv_vports);
+ qla2x00_get_resource_cnts(vha, NULL,
+ &ha->fw_xcb_count, NULL, NULL,
+ &ha->max_npiv_vports);
if (!fw_major_version && ql2xallocfwdump)
qla2x00_alloc_fw_dump(vha);
@@ -1275,8 +1276,11 @@ qla2x00_init_rings(scsi_qla_host_t *vha)
mid_init_cb->count = cpu_to_le16(ha->max_npiv_vports);
}
-
- mid_init_cb->options = __constant_cpu_to_le16(BIT_1);
+ if (IS_FWI2_CAPABLE(ha)) {
+ mid_init_cb->options = __constant_cpu_to_le16(BIT_1);
+ mid_init_cb->init_cb.execution_throttle =
+ cpu_to_le16(ha->fw_xcb_count);
+ }
rval = qla2x00_init_firmware(vha, ha->init_cb_size);
if (rval) {