diff options
| 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 | |
| parent | f1663ad5dbb801e03c4c99c24d698ad5dba9aaff (diff) | |
| download | linux-18c6c12759813c988bb05796d1b3352e98ae77de.tar.gz | |
[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')
| -rw-r--r-- | drivers/scsi/qla2xxx/qla_gbl.h | 1 | ||||
| -rw-r--r-- | drivers/scsi/qla2xxx/qla_init.c | 21 | ||||
| -rw-r--r-- | drivers/scsi/qla2xxx/qla_os.c | 6 |
3 files changed, 25 insertions, 3 deletions
diff --git a/drivers/scsi/qla2xxx/qla_gbl.h b/drivers/scsi/qla2xxx/qla_gbl.h index b51ce8f59cb9..ca2f660a5438 100644 --- a/drivers/scsi/qla2xxx/qla_gbl.h +++ b/drivers/scsi/qla2xxx/qla_gbl.h @@ -48,6 +48,7 @@ extern void qla2x00_update_fcport(scsi_qla_host_t *, fc_port_t *); extern void qla2x00_reg_remote_port(scsi_qla_host_t *, fc_port_t *); extern void qla2x00_alloc_fw_dump(scsi_qla_host_t *); +extern void qla2x00_try_to_stop_firmware(scsi_qla_host_t *); /* * Global Data in qla_os.c source file. diff --git a/drivers/scsi/qla2xxx/qla_init.c b/drivers/scsi/qla2xxx/qla_init.c index d5e0a124c4f4..08cb5e3fb553 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); + } +} diff --git a/drivers/scsi/qla2xxx/qla_os.c b/drivers/scsi/qla2xxx/qla_os.c index 34b6eb71e450..54f561d9c7a7 100644 --- a/drivers/scsi/qla2xxx/qla_os.c +++ b/drivers/scsi/qla2xxx/qla_os.c @@ -1712,8 +1712,10 @@ qla2x00_free_device(scsi_qla_host_t *ha) if (ha->eft) qla2x00_trace_control(ha, TC_DISABLE, 0, 0); + ha->flags.online = 0; + /* Stop currently executing firmware. */ - qla2x00_stop_firmware(ha); + qla2x00_try_to_stop_firmware(ha); /* turn-off interrupts on the card */ if (ha->interrupts_on) @@ -1721,8 +1723,6 @@ qla2x00_free_device(scsi_qla_host_t *ha) qla2x00_mem_free(ha); - ha->flags.online = 0; - /* Detach interrupts */ if (ha->host->irq) free_irq(ha->host->irq, ha); |