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/*
* 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) 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_core.h"
#include "edac_module.h"
#define EDAC_MOD_STR "octeon-l2c"
static void co_l2c_poll(struct edac_device_ctl_info *l2c)
{
union cvmx_l2t_err l2t_err;
l2t_err.u64 = cvmx_read_csr(CVMX_L2T_ERR);
if (l2t_err.s.sec_err) {
edac_device_handle_ce(l2c, 0, 0,
"Single bit error (corrected)");
l2t_err.s.sec_err = 1; /* Reset */
cvmx_write_csr(CVMX_L2T_ERR, l2t_err.u64);
}
if (l2t_err.s.ded_err) {
edac_device_handle_ue(l2c, 0, 0,
"Double bit error (corrected)");
l2t_err.s.ded_err = 1; /* Reset */
cvmx_write_csr(CVMX_L2T_ERR, l2t_err.u64);
}
}
static int __devinit co_l2c_probe(struct platform_device *pdev)
{
struct edac_device_ctl_info *l2c;
union cvmx_l2t_err l2t_err;
int res = 0;
l2c = edac_device_alloc_ctl_info(0, "l2c", 1, NULL, 0, 0,
NULL, 0, edac_device_alloc_index());
if (!l2c)
return -ENOMEM;
l2c->dev = &pdev->dev;
platform_set_drvdata(pdev, l2c);
l2c->dev_name = dev_name(&pdev->dev);
l2c->mod_name = "octeon-l2c";
l2c->ctl_name = "octeon_l2c_err";
l2c->edac_check = co_l2c_poll;
if (edac_device_add_device(l2c) > 0) {
pr_err("%s: edac_device_add_device() failed\n", __func__);
goto err;
}
l2t_err.u64 = cvmx_read_csr(CVMX_L2T_ERR);
l2t_err.s.sec_intena = 0; /* We poll */
l2t_err.s.ded_intena = 0;
l2t_err.s.sec_err = 1; /* Clear, just in case */
l2t_err.s.ded_err = 1;
cvmx_write_csr(CVMX_L2T_ERR, l2t_err.u64);
return 0;
err:
edac_device_free_ctl_info(l2c);
return res;
}
static int co_l2c_remove(struct platform_device *pdev)
{
struct edac_device_ctl_info *l2c = platform_get_drvdata(pdev);
edac_device_del_device(&pdev->dev);
edac_device_free_ctl_info(l2c);
return 0;
}
static struct platform_driver co_l2c_driver = {
.probe = co_l2c_probe,
.remove = co_l2c_remove,
.driver = {
.name = "co_l2c_edac",
}
};
static int __init co_edac_init(void)
{
int ret;
ret = platform_driver_register(&co_l2c_driver);
if (ret)
pr_warning(EDAC_MOD_STR " EDAC failed to register\n");
return ret;
}
static void __exit co_edac_exit(void)
{
platform_driver_unregister(&co_l2c_driver);
}
module_init(co_edac_init);
module_exit(co_edac_exit);
MODULE_LICENSE("GPL");
MODULE_AUTHOR("Ralf Baechle <ralf@linux-mips.org>");
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