linux-imx

/*

 * edac_mc kernel module

 * (C) 2005, 2006 Linux Networx (http://lnxi.com)

 * This file may be distributed under the terms of the

 * GNU General Public License.

 *

 * Written by Thayne Harbaugh

 * Based on work by Dan Hollis <goemon at anime dot net> and others.

 *  http://www.anime.net/~goemon/linux-ecc/

 *

 * Modified by Dave Peterson and Doug Thompson

 *

 */

​

#include <linux/module.h>

#include <linux/proc_fs.h>

#include <linux/kernel.h>

#include <linux/types.h>

#include <linux/smp.h>

#include <linux/init.h>

#include <linux/sysctl.h>

#include <linux/highmem.h>

#include <linux/timer.h>

#include <linux/slab.h>

#include <linux/jiffies.h>

#include <linux/spinlock.h>

#include <linux/list.h>

#include <linux/ctype.h>

#include <linux/edac.h>

#include <linux/bitops.h>

#include <linux/uaccess.h>

#include <asm/page.h>

#include "edac_mc.h"

#include "edac_module.h"

#include <ras/ras_event.h>

​

#ifdef CONFIG_EDAC_ATOMIC_SCRUB

#include <asm/edac.h>

#else

#define edac_atomic_scrub(va, size) do { } while (0)

#endif

​

int edac_op_state = EDAC_OPSTATE_INVAL;

EXPORT_SYMBOL_GPL(edac_op_state);

​

static int edac_report = EDAC_REPORTING_ENABLED;

​

/* lock to memory controller's control array */

static DEFINE_MUTEX(mem_ctls_mutex);

static LIST_HEAD(mc_devices);

​

/*

 * Used to lock EDAC MC to just one module, avoiding two drivers e. g.

 *  apei/ghes and i7core_edac to be used at the same time.

 */

static const char *edac_mc_owner;

​

int edac_get_report_status(void)

{

    return edac_report;

}

EXPORT_SYMBOL_GPL(edac_get_report_status);

​

void edac_set_report_status(int new)

{

    if (new == EDAC_REPORTING_ENABLED ||

        new == EDAC_REPORTING_DISABLED ||

        new == EDAC_REPORTING_FORCE)

        edac_report = new;

}

EXPORT_SYMBOL_GPL(edac_set_report_status);

​

static int edac_report_set(const char *str, const struct kernel_param *kp)

{

    if (!str)

        return -EINVAL;

​

    if (!strncmp(str, "on", 2))

        edac_report = EDAC_REPORTING_ENABLED;

    else if (!strncmp(str, "off", 3))

        edac_report = EDAC_REPORTING_DISABLED;

    else if (!strncmp(str, "force", 5))

        edac_report = EDAC_REPORTING_FORCE;

​

    return 0;

}

​

static int edac_report_get(char *buffer, const struct kernel_param *kp)

{

    int ret = 0;

​

    switch (edac_report) {