diff options
| author | Anand Kumar Santhanam <AnandKumar.Santhanam@pmcs.com> | 2013-09-17 14:32:20 +0530 |
|---|---|---|
| committer | James Bottomley <JBottomley@Parallels.com> | 2013-10-25 09:58:15 +0100 |
| commit | 06f12f22cefdc2737b54fc986d9b82ec358cdbb8 (patch) | |
| tree | 94a25592f91adaa9168125c39d08ea4b5d68facf /drivers/scsi/pm8001 | |
| parent | cb269c26ed027bea67f5961619ae43f480a4dd3d (diff) | |
[SCSI] pm80xx: IButton security feature support for motherboard controllers.
Signed-off-by: Anandkumar.Santhanam@pmcs.com
Reviewed-by: Jack Wang <jinpu.wang@profitbricks.com>
Signed-off-by: James Bottomley <JBottomley@Parallels.com>
Diffstat (limited to 'drivers/scsi/pm8001')
| -rw-r--r-- | drivers/scsi/pm8001/pm80xx_hwi.c | 23 |
1 files changed, 22 insertions, 1 deletions
diff --git a/drivers/scsi/pm8001/pm80xx_hwi.c b/drivers/scsi/pm8001/pm80xx_hwi.c index 0a2dc56ed9f..c8a4465b74a 100644 --- a/drivers/scsi/pm8001/pm80xx_hwi.c +++ b/drivers/scsi/pm8001/pm80xx_hwi.c @@ -967,6 +967,7 @@ pm80xx_chip_soft_rst(struct pm8001_hba_info *pm8001_ha) { u32 regval; u32 bootloader_state; + u32 ibutton0, ibutton1; /* Check if MPI is in ready state to reset */ if (mpi_uninit_check(pm8001_ha) != 0) { @@ -1025,7 +1026,27 @@ pm80xx_chip_soft_rst(struct pm8001_hba_info *pm8001_ha) if (-1 == check_fw_ready(pm8001_ha)) { PM8001_FAIL_DBG(pm8001_ha, pm8001_printk("Firmware is not ready!\n")); - return -EBUSY; + /* check iButton feature support for motherboard controller */ + if (pm8001_ha->pdev->subsystem_vendor != + PCI_VENDOR_ID_ADAPTEC2 && + pm8001_ha->pdev->subsystem_vendor != 0) { + ibutton0 = pm8001_cr32(pm8001_ha, 0, + MSGU_HOST_SCRATCH_PAD_6); + ibutton1 = pm8001_cr32(pm8001_ha, 0, + MSGU_HOST_SCRATCH_PAD_7); + if (!ibutton0 && !ibutton1) { + PM8001_FAIL_DBG(pm8001_ha, + pm8001_printk("iButton Feature is" + " not Available!!!\n")); + return -EBUSY; + } + if (ibutton0 == 0xdeadbeef && ibutton1 == 0xdeadbeef) { + PM8001_FAIL_DBG(pm8001_ha, + pm8001_printk("CRC Check for iButton" + " Feature Failed!!!\n")); + return -EBUSY; + } + } } PM8001_INIT_DBG(pm8001_ha, pm8001_printk("SPCv soft reset Complete\n")); |