path: root/drivers/edac/mpc85xx_edac.c

/*
 * Freescale MPC85xx Memory Controller kenel module
 *
 * Author: Dave Jiang <djiang@mvista.com>
 *
 * 2006-2007 (c) MontaVista Software, Inc. This file is licensed under
 * the terms of the GNU General Public License version 2. This program
 * is licensed "as is" without any warranty of any kind, whether express
 * or implied.
 *
 */
#include <linux/module.h>
#include <linux/init.h>
#include <linux/slab.h>
#include <linux/interrupt.h>
#include <linux/ctype.h>
#include <linux/io.h>
#include <linux/mod_devicetable.h>
#include <linux/edac.h>

#include <linux/of_platform.h>
#include <linux/of_device.h>
#include "edac_module.h"
#include "edac_core.h"
#include "mpc85xx_edac.h"

static int edac_dev_idx;
static int edac_pci_idx;
static int edac_mc_idx;

static u32 orig_ddr_err_disable;
static u32 orig_ddr_err_sbe;

/*
 * PCI Err defines
 */
#ifdef CONFIG_PCI
static u32 orig_pci_err_cap_dr;
static u32 orig_pci_err_en;
#endif

static u32 orig_l2_err_disable;
static u32 orig_hid1;

/************************ MC SYSFS parts ***********************************/

static ssize_t mpc85xx_mc_inject_data_hi_show(struct mem_ctl_info *mci,
					      char *data)
{
	struct mpc85xx_mc_pdata *pdata = mci->pvt_info;
	return sprintf(data, "0x%08x",
		       in_be32(pdata->mc_vbase +
			       MPC85XX_MC_DATA_ERR_INJECT_HI));
}

static ssize_t mpc85xx_mc_inject_data_lo_show(struct mem_ctl_info *mci,
					      char *data)
{
	struct mpc85xx_mc_pdata *pdata = mci->pvt_info;
	return sprintf(data, "0x%08x",
		       in_be32(pdata->mc_vbase +
			       MPC85XX_MC_DATA_ERR_INJECT_LO));
}

static ssize_t mpc85xx_mc_inject_ctrl_show(struct mem_ctl_info *mci, char *data)
{
	struct mpc85xx_mc_pdata *pdata = mci->pvt_info;
	return sprintf(data, "0x%08x",
		       in_be32(pdata->mc_vbase + MPC85XX_MC_ECC_ERR_INJECT));
}

static ssize_t mpc85xx_mc_inject_data_hi_store(struct mem_ctl_info *mci,
					       const char *data, size_t count)
{
	struct mpc85xx_mc_pdata *pdata = mci->pvt_info;
	if (isdigit(*data)) {
		out_be32(pdata->mc_vbase + MPC85XX_MC_DATA_ERR_INJECT_HI,
			 simple_strtoul(data, NULL, 0));
		return count;
	}
	return 0;
}

static ssize_t mpc85xx_mc_inject_data_lo_store(struct mem_ctl_info *mci,
					       const char *data, size_t count)
{
	struct mpc85xx_mc_pdata *pdata = mci->pvt_info;
	if (isdigit(*data)) {
		out_be32(pdata->mc_vbase + MPC85XX_MC_DATA_ERR_INJECT_LO,
			 simple_strtoul(data, NULL, 0));
		return count;
	}
	return 0;
}

static ssize_t mpc85xx_mc_inject_ctrl_store(struct mem_ctl_info *mci,
					    const char *data, size_t count)
{
	struct mpc85xx_mc_pdata *pdata = mci->pvt_info;
	if (isdigit(*data)) {
		out_be32(pdata->mc_vbase + MPC85XX_MC_ECC_ERR_INJECT,
			 simple_strtoul(data, NULL, 0));
		return count;
	}
	return 0;
}

static struct mcidev_sysfs_attribute mpc85xx_mc_sysfs_attributes[] = {
	{
	 .attr = {
		  .name = "inject_data_hi",
		  .mode = (S_IRUGO | S_IWUSR)
		  },
	 .show = mpc85xx_mc_inject_data_hi_show,
	 .store = mpc85xx_mc_inject_data_hi_store},
	{
	 .attr = {
		  .name = "inject_data_lo",
		  .mode = (S_IRUGO | S_IWUSR)
		  },
	 .show = mpc85xx_mc_inject_data_lo_show,
	 .store = mpc85xx_mc_inject_data_lo_store},
	{
	 .attr = {
		  .name = "inject_ctrl",
		  .mode = (S_IRUGO | S_IWUSR)
		  },
	 .show = mpc85xx_mc_inject_ctrl_show,
	 .store = mpc85xx_mc_inject_ctrl_store},

	/* End of list */
	{
	 .attr = {.name = NULL}
	 }
};

static void mpc85xx_set_mc_sysfs_attributes(struct mem_ctl_info *mci)
{
	mci->mc_driver_sysfs_attributes = mpc85xx_mc_sysfs_attributes;
}

/**************************** PCI Err device ***************************/
#ifdef CONFIG_PCI

static</