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| author | Andrew Vasquez <andrew.vasquez@qlogic.com> | 2006-10-13 09:33:38 -0700 |
|---|---|---|
| committer | James Bottomley <jejb@mulgrave.il.steeleye.com> | 2006-10-25 15:13:04 -0700 |
| commit | 18c6c12759813c988bb05796d1b3352e98ae77de (patch) | |
| tree | 4766e8b68a3ed124efc9c2c43b12a067eccf7bff /drivers/scsi/qla2xxx/qla_init.c | |
| parent | f1663ad5dbb801e03c4c99c24d698ad5dba9aaff (diff) | |
| download | linux-3.10-18c6c12759813c988bb05796d1b3352e98ae77de.tar.gz linux-3.10-18c6c12759813c988bb05796d1b3352e98ae77de.tar.bz2 linux-3.10-18c6c12759813c988bb05796d1b3352e98ae77de.zip | |
[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.c | 21 |
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); + } +} |