From mboxrd@z Thu Jan 1 00:00:00 1970 From: Anand Subject: [PATCH V2 02/10] pm80xx: IButton feature support for motherboard controllers. Date: Wed, 25 Sep 2013 22:28:52 -0700 Message-ID: <5243C614.4080207@pmc-sierra.com> Mime-Version: 1.0 Content-Type: text/plain; charset=ISO-8859-1 Content-Transfer-Encoding: 7bit Return-path: Received: from bby1mta03.pmc-sierra.com ([216.241.235.118]:56769 "EHLO bby1mta03.pmc-sierra.bc.ca" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751277Ab3IZF0V (ORCPT ); Thu, 26 Sep 2013 01:26:21 -0400 Sender: linux-scsi-owner@vger.kernel.org List-Id: linux-scsi@vger.kernel.org To: linux-scsi@vger.kernel.org Cc: Sangeetha.Gnanasekaran@pmcs.com, Nikith.Ganigarakoppal@pmcs.com, Viswas.G@pmcs.com, xjtuwjp@gmail.com >>From d6b5e5d88f424b334c9b9c241f988b9eec1a70c7 Mon Sep 17 00:00:00 2001 From: Anand Kumar Santhanam Date: Tue, 17 Sep 2013 14:32:20 +0530 Subject: [PATCH V2 02/10] pm80xx: IButton feature support for motherboard controllers. IButton security feature support for motherboard controllers. Signed-off-by: Anandkumar.Santhanam@pmcs.com --- drivers/scsi/pm8001/pm80xx_hwi.c | 22 +++++++++++++++++++++- 1 files changed, 21 insertions(+), 1 deletions(-) diff --git a/drivers/scsi/pm8001/pm80xx_hwi.c b/drivers/scsi/pm8001/pm80xx_hwi.c index 8efac42..912dfec 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")); -- 1.7.1