>From db345f70bef0b07655d887f2d0398faf666f4a48 Mon Sep 17 00:00:00 2001
From: Anand Kumar Santhanam <AnandKumar.Santhanam@xxxxxxxx>
Date: Tue, 3 Sep 2013 15:21:29 +0530
Subject: [PATCH 2/5] pm80xx: IButton feature support and Indirect SMP fix.
IButton security feature support for motherboard controllers.
Fix for indirect data transfer mode in case of SMP request.
Signed-off-by: Anandkumar.Santhanam@xxxxxxxx
---
drivers/scsi/pm8001/pm80xx_hwi.c | 26 ++++++++++++++++++++++----
1 files changed, 22 insertions(+), 4 deletions(-)
diff --git a/drivers/scsi/pm8001/pm80xx_hwi.c b/drivers/scsi/pm8001/pm80xx_hwi.c
index be0b394..158e91d 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 +1026,26 @@ 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) {
+ 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"));
@@ -3492,8 +3512,6 @@ static int pm80xx_chip_smp_req(struct pm8001_hba_info *pm8001_ha,
else
pm8001_ha->smp_exp_mode = SMP_INDIRECT;
- /* DIRECT MODE support only in spcv/ve */
- pm8001_ha->smp_exp_mode = SMP_DIRECT;
tmp_addr = cpu_to_le64((u64)sg_dma_address(&task->smp_task.smp_req));
preq_dma_addr = (char *)phys_to_virt(tmp_addr);
@@ -3509,7 +3527,7 @@ static int pm80xx_chip_smp_req(struct pm8001_hba_info *pm8001_ha,
/* exclude top 4 bytes for SMP req header */
smp_cmd.long_smp_req.long_req_addr =
cpu_to_le64((u64)sg_dma_address
- (&task->smp_task.smp_req) - 4);
+ (&task->smp_task.smp_req) + 4);
/* exclude 4 bytes for SMP req header and CRC */
smp_cmd.long_smp_req.long_req_size =
cpu_to_le32((u32)sg_dma_len(&task->smp_task.smp_req)-8);
--
1.7.1
--
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