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authorAndrew Vasquez <andrew.vasquez@qlogic.com>2006-10-13 09:33:38 -0700
committerJames Bottomley <jejb@mulgrave.il.steeleye.com>2006-10-25 15:13:04 -0700
commit18c6c12759813c988bb05796d1b3352e98ae77de (patch)
tree4766e8b68a3ed124efc9c2c43b12a067eccf7bff /drivers/scsi/qla2xxx/qla_init.c
parentf1663ad5dbb801e03c4c99c24d698ad5dba9aaff (diff)
[SCSI] qla2xxx: Workaround D3 power-management issues.
Early ISP2432 parts have a known hardware issue when coming out of a D3 hot state. This issue can result in a hung PCIe link. Recent firmwares contain a workaround whereby the stop-firmware mailbox command prevents the ISP from entering the D3 hot state. In order to ensure that the workaround succeeded the driver must verify that the stop-firmware mailbox command completes successfully. In the event of a failure, the driver attempts a shutdown-retry after resetting the ISP and re-executing firmware. 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_init.c')
-rw-r--r--drivers/scsi/qla2xxx/qla_init.c21
1 files changed, 21 insertions, 0 deletions
diff --git a/drivers/scsi/qla2xxx/qla_init.c b/drivers/scsi/qla2xxx/qla_init.c
index d5e0a124c4f..08cb5e3fb55 100644
--- a/drivers/scsi/qla2xxx/qla_init.c
+++ b/drivers/scsi/qla2xxx/qla_init.c
@@ -3948,3 +3948,24 @@ qla24xx_load_risc(scsi_qla_host_t *ha, uint32_t *srisc_addr)
fail_fw_integrity:
return QLA_FUNCTION_FAILED;
}
+
+void
+qla2x00_try_to_stop_firmware(scsi_qla_host_t *ha)
+{
+ int ret, retries;
+
+ if (!IS_QLA24XX(ha) && !IS_QLA54XX(ha))
+ return;
+
+ ret = qla2x00_stop_firmware(ha);
+ for (retries = 5; ret != QLA_SUCCESS && retries ; retries--) {
+ qla2x00_reset_chip(ha);
+ if (qla2x00_chip_diag(ha) != QLA_SUCCESS)
+ continue;
+ if (qla2x00_setup_chip(ha) != QLA_SUCCESS)
+ continue;
+ qla_printk(KERN_INFO, ha,
+ "Attempting retry of stop-firmware command...\n");
+ ret = qla2x00_stop_firmware(ha);
+ }
+}