linux-imx

/*

 * Copyright (C) 2006-2007 PA Semi, Inc

 *

 * Author: Egor Martovetsky <egor@pasemi.com>

 * Maintained by: Olof Johansson <olof@lixom.net>

 *

 * Driver for the PWRficient onchip memory controllers

 *

 * This program is free software; you can redistribute it and/or modify

 * it under the terms of the GNU General Public License version 2 as

 * published by the Free Software Foundation.

 *

 * This program is distributed in the hope that it will be useful,

 * but WITHOUT ANY WARRANTY; without even the implied warranty of

 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the

 * GNU General Public License for more details.

 *

 * You should have received a copy of the GNU General Public License

 * along with this program; if not, write to the Free Software

 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307 USA

 */

​

​

#include <linux/module.h>

#include <linux/init.h>

#include <linux/pci.h>

#include <linux/pci_ids.h>

#include <linux/edac.h>

#include "edac_module.h"

​

#define MODULE_NAME "pasemi_edac"

​

#define MCCFG_MCEN              0x300

#define   MCCFG_MCEN_MMC_EN         0x00000001

#define MCCFG_ERRCOR                0x388

#define   MCCFG_ERRCOR_RNK_FAIL_DET_EN      0x00000100

#define   MCCFG_ERRCOR_ECC_GEN_EN       0x00000010

#define   MCCFG_ERRCOR_ECC_CRR_EN       0x00000001

#define MCCFG_SCRUB             0x384

#define   MCCFG_SCRUB_RGLR_SCRB_EN      0x00000001

#define MCDEBUG_ERRCTL1             0x728

#define   MCDEBUG_ERRCTL1_RFL_LOG_EN        0x00080000

#define   MCDEBUG_ERRCTL1_MBE_LOG_EN        0x00040000

#define   MCDEBUG_ERRCTL1_SBE_LOG_EN        0x00020000

#define MCDEBUG_ERRSTA              0x730

#define   MCDEBUG_ERRSTA_RFL_STATUS     0x00000004

#define   MCDEBUG_ERRSTA_MBE_STATUS     0x00000002

#define   MCDEBUG_ERRSTA_SBE_STATUS     0x00000001

#define MCDEBUG_ERRCNT1             0x734

#define   MCDEBUG_ERRCNT1_SBE_CNT_OVRFLO    0x00000080

#define MCDEBUG_ERRLOG1A            0x738

#define   MCDEBUG_ERRLOG1A_MERR_TYPE_M      0x30000000

#define   MCDEBUG_ERRLOG1A_MERR_TYPE_NONE   0x00000000

#define   MCDEBUG_ERRLOG1A_MERR_TYPE_SBE    0x10000000

#define   MCDEBUG_ERRLOG1A_MERR_TYPE_MBE    0x20000000

#define   MCDEBUG_ERRLOG1A_MERR_TYPE_RFL    0x30000000

#define   MCDEBUG_ERRLOG1A_MERR_BA_M        0x00700000

#define   MCDEBUG_ERRLOG1A_MERR_BA_S        20

#define   MCDEBUG_ERRLOG1A_MERR_CS_M        0x00070000

#define   MCDEBUG_ERRLOG1A_MERR_CS_S        16

#define   MCDEBUG_ERRLOG1A_SYNDROME_M       0x0000ffff

#define MCDRAM_RANKCFG              0x114

#define   MCDRAM_RANKCFG_EN         0x00000001

#define   MCDRAM_RANKCFG_TYPE_SIZE_M        0x000001c0

#define   MCDRAM_RANKCFG_TYPE_SIZE_S        6

​

#define PASEMI_EDAC_NR_CSROWS           8

#define PASEMI_EDAC_NR_CHANS            1

#define PASEMI_EDAC_ERROR_GRAIN         64

​

static int last_page_in_mmc;

static int system_mmc_id;

​

​

static u32 pasemi_edac_get_error_info(struct mem_ctl_info *mci)

{

    struct pci_dev *pdev = to_pci_dev(mci->pdev);

    u32 tmp;

​

    pci_read_config_dword(pdev, MCDEBUG_ERRSTA,

                  &tmp);

​

    tmp &= (MCDEBUG_ERRSTA_RFL_STATUS | MCDEBUG_ERRSTA_MBE_STATUS

        | MCDEBUG_ERRSTA_SBE_STATUS);

​

    if (tmp) {

        if (tmp & MCDEBUG_ERRSTA_SBE_STATUS)

            pci_write_config_dword(pdev, MCDEBUG_ERRCNT1,

                           MCDEBUG_ERRCNT1_SBE_CNT_OVRFLO);

        pci_write_config_dword(pdev, MCDEBUG_ERRSTA, tmp);

    }

​