linux-imx

/*

 * This file is subject to the terms and conditions of the GNU General Public

 * License.  See the file "COPYING" in the main directory of this archive

 * for more details.

 *

 * Copyright (C) 2012 Cavium, Inc.

 *

 * Copyright (C) 2009 Wind River Systems,

 *   written by Ralf Baechle <ralf@linux-mips.org>

 */

#include <linux/module.h>

#include <linux/init.h>

#include <linux/slab.h>

#include <linux/io.h>

#include <linux/edac.h>

​

#include <asm/octeon/cvmx.h>

​

#include "edac_module.h"

​

#define EDAC_MOD_STR "octeon-l2c"

​

static void octeon_l2c_poll_oct1(struct edac_device_ctl_info *l2c)

{

    union cvmx_l2t_err l2t_err, l2t_err_reset;

    union cvmx_l2d_err l2d_err, l2d_err_reset;

​

    l2t_err_reset.u64 = 0;

    l2t_err.u64 = cvmx_read_csr(CVMX_L2T_ERR);

    if (l2t_err.s.sec_err) {

        edac_device_handle_ce(l2c, 0, 0,

                      "Tag Single bit error (corrected)");

        l2t_err_reset.s.sec_err = 1;

    }

    if (l2t_err.s.ded_err) {

        edac_device_handle_ue(l2c, 0, 0,

                      "Tag Double bit error (detected)");

        l2t_err_reset.s.ded_err = 1;

    }

    if (l2t_err_reset.u64)

        cvmx_write_csr(CVMX_L2T_ERR, l2t_err_reset.u64);

​

    l2d_err_reset.u64 = 0;

    l2d_err.u64 = cvmx_read_csr(CVMX_L2D_ERR);

    if (l2d_err.s.sec_err) {

        edac_device_handle_ce(l2c, 0, 1,

                      "Data Single bit error (corrected)");

        l2d_err_reset.s.sec_err = 1;

    }

    if (l2d_err.s.ded_err) {

        edac_device_handle_ue(l2c, 0, 1,

                      "Data Double bit error (detected)");

        l2d_err_reset.s.ded_err = 1;

    }

    if (l2d_err_reset.u64)

        cvmx_write_csr(CVMX_L2D_ERR, l2d_err_reset.u64);

​

}

​

static void _octeon_l2c_poll_oct2(struct edac_device_ctl_info *l2c, int tad)

{

    union cvmx_l2c_err_tdtx err_tdtx, err_tdtx_reset;

    union cvmx_l2c_err_ttgx err_ttgx, err_ttgx_reset;

    char buf1[64];

    char buf2[80];

​

    err_tdtx_reset.u64 = 0;

    err_tdtx.u64 = cvmx_read_csr(CVMX_L2C_ERR_TDTX(tad));

    if (err_tdtx.s.dbe || err_tdtx.s.sbe ||

        err_tdtx.s.vdbe || err_tdtx.s.vsbe)

        snprintf(buf1, sizeof(buf1),

             "type:%d, syn:0x%x, way:%d",

             err_tdtx.s.type, err_tdtx.s.syn, err_tdtx.s.wayidx);

​

    if (err_tdtx.s.dbe) {

        snprintf(buf2, sizeof(buf2),

             "L2D Double bit error (detected):%s", buf1);

        err_tdtx_reset.s.dbe = 1;

        edac_device_handle_ue(l2c, tad, 1, buf2);

    }

    if (err_tdtx.s.sbe) {

        snprintf(buf2, sizeof(buf2),

             "L2D Single bit error (corrected):%s", buf1);

        err_tdtx_reset.s.sbe = 1;

        edac_device_handle_ce(l2c, tad, 1, buf2);

    }

    if (err_tdtx.s.vdbe) {

        snprintf(buf2, sizeof(buf2),

             "VBF Double bit error (detected):%s", buf1);

        err_tdtx_reset.s.vdbe = 1;

        edac_device_handle_ue(l2c, tad, 1, buf2);

    }