|
|
|
/*
|
|
|
|
* Copyright 2011-2012 Calxeda, Inc.
|
|
|
|
*
|
|
|
|
* This program is free software; you can redistribute it and/or modify it
|
|
|
|
* under the terms and conditions of the GNU General Public License,
|
|
|
|
* version 2, as published by the Free Software Foundation.
|
|
|
|
*
|
|
|
|
* This program is distributed in the hope 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, see <http://www.gnu.org/licenses/>.
|
|
|
|
*/
|
|
|
|
#include <linux/types.h>
|
|
|
|
#include <linux/kernel.h>
|
|
|
|
#include <linux/ctype.h>
|
|
|
|
#include <linux/edac.h>
|
|
|
|
#include <linux/interrupt.h>
|
|
|
|
#include <linux/platform_device.h>
|
|
|
|
#include <linux/of_platform.h>
|
|
|
|
|
|
|
|
#include "edac_core.h"
|
|
|
|
#include "edac_module.h"
|
|
|
|
|
|
|
|
#define SR_CLR_SB_ECC_INTR 0x0
|
|
|
|
#define SR_CLR_DB_ECC_INTR 0x4
|
|
|
|
|
|
|
|
struct hb_l2_drvdata {
|
|
|
|
void __iomem *base;
|
|
|
|
int sb_irq;
|
|
|
|
int db_irq;
|
|
|
|
};
|
|
|
|
|
|
|
|
static irqreturn_t highbank_l2_err_handler(int irq, void *dev_id)
|
|
|
|
{
|
|
|
|
struct edac_device_ctl_info *dci = dev_id;
|
|
|
|
struct hb_l2_drvdata *drvdata = dci->pvt_info;
|
|
|
|
|
|
|
|
if (irq == drvdata->sb_irq) {
|
|
|
|
writel(1, drvdata->base + SR_CLR_SB_ECC_INTR);
|
|
|
|
edac_device_handle_ce(dci, 0, 0, dci->ctl_name);
|
|
|
|
}
|
|
|
|
if (irq == drvdata->db_irq) {
|
|
|
|
writel(1, drvdata->base + SR_CLR_DB_ECC_INTR);
|
|
|
|
edac_device_handle_ue(dci, 0, 0, dci->ctl_name);
|
|
|
|
}
|
|
|
|
|
|
|
|
return IRQ_HANDLED;
|
|
|
|
}
|
|
|
|
|
|
|
|
static const struct of_device_id hb_l2_err_of_match[] = {
|
|
|
|
{ .compatible = "calxeda,hb-sregs-l2-ecc", },
|
|
|
|
{},
|
|
|
|
};
|
|
|
|
MODULE_DEVICE_TABLE(of, hb_l2_err_of_match);
|
|
|
|
|
|
|
|
static int highbank_l2_err_probe(struct platform_device *pdev)
|
|
|
|
{
|
|
|
|
const struct of_device_id *id;
|
|
|
|
struct edac_device_ctl_info *dci;
|
|
|
|
struct hb_l2_drvdata *drvdata;
|
|
|
|
struct resource *r;
|
|
|
|
int res = 0;
|
|
|
|
|
|
|
|
dci = edac_device_alloc_ctl_info(sizeof(*drvdata), "cpu",
|
|
|
|
1, "L", 1, 2, NULL, 0, 0);
|
|
|
|
if (!dci)
|
|
|
|
return -ENOMEM;
|
|
|
|
|
|
|
|
drvdata = dci->pvt_info;
|
|
|
|
dci->dev = &pdev->dev;
|
|
|
|
platform_set_drvdata(pdev, dci);
|
|
|
|
|
|
|
|
if (!devres_open_group(&pdev->dev, NULL, GFP_KERNEL))
|
|
|
|
return -ENOMEM;
|
|
|
|
|
|
|
|
r = platform_get_resource(pdev, IORESOURCE_MEM, 0);
|
|
|
|
if (!r) {
|
|
|
|
dev_err(&pdev->dev, "Unable to get mem resource\n");
|
|
|
|
res = -ENODEV;
|
|
|
|
goto err;
|
|
|
|
}
|
|
|
|
|
|
|
|
if (!devm_request_mem_region(&pdev->dev, r->start,
|
|
|
|
resource_size(r), dev_name(&pdev->dev))) {
|
|
|
|
dev_err(&pdev->dev, "Error while requesting mem region\n");
|
|
|
|
res = -EBUSY;
|
|
|
|
goto err;
|
|
|
|
}
|
|
|
|
|
|
|
|
drvdata->base = devm_ioremap(&pdev->dev, r->start, resource_size(r));
|
|
|
|
if (!drvdata->base) {
|
|
|
|
dev_err(&pdev->dev, "Unable to map regs\n");
|
|
|
|
res = -ENOMEM;
|
|
|
|
goto err;
|
|
|
|
}
|
|
|
|
|
|
|
|
id = of_match_device(hb_l2_err_of_match, &pdev->dev);
|
|
|
|
dci->mod_name = pdev->dev.driver->name;
|
|
|
|
dci->ctl_name = id ? id->compatible : "unknown";
|
|
|
|
dci->dev_name = dev_name(&pdev->dev);
|
|
|
|
|
|
|
|
if (edac_device_add_device(dci))
|
|
|
|
goto err;
|
|
|
|
|
|
|
|
drvdata->db_irq = platform_get_irq(pdev, 0);
|
|
|
|
res = devm_request_irq(&pdev->dev, drvdata->db_irq,
|
|
|
|
highbank_l2_err_handler,
|
|
|
|
0, dev_name(&pdev->dev), dci);
|
|
|
|
if (res < 0)
|
|
|
|
goto err2;
|
|
|
|
|
|
|
|
drvdata->sb_irq = platform_get_irq(pdev, 1);
|
|
|
|
res = devm_request_irq(&pdev->dev, drvdata->sb_irq,
|
|
|
|
highbank_l2_err_handler,
|
|
|
|
0, dev_name(&pdev->dev), dci);
|
|
|
|
if (res < 0)
|
|
|
|
goto err2;
|
|
|
|
|
|
|
|
devres_close_group(&pdev->dev, NULL);
|
|
|
|
return 0;
|
|
|
|
err2:
|
|
|
|
edac_device_del_device(&pdev->dev);
|
|
|
|
err:
|
|
|
|
devres_release_group(&pdev->dev, NULL);
|
|
|
|
edac_device_free_ctl_info(dci);
|
|
|
|
return res;
|
|
|
|
}
|
|
|
|
|
|
|
|
static int highbank_l2_err_remove(struct platform_device *pdev)
|
|
|
|
{
|
|
|
|
struct edac_device_ctl_info *dci = platform_get_drvdata(pdev);
|
|
|
|
|
|
|
|
edac_device_del_device(&pdev->dev);
|
|
|
|
edac_device_free_ctl_info(dci);
|
|
|
|
return 0;
|
|
|
|
}
|
|
|
|
|
|
|
|
static struct platform_driver highbank_l2_edac_driver = {
|
|
|
|
.probe = highbank_l2_err_probe,
|
|
|
|
.remove = highbank_l2_err_remove,
|
|
|
|
.driver = {
|
|
|
|
.name = "hb_l2_edac",
|
|
|
|
.of_match_table = hb_l2_err_of_match,
|
|
|
|
},
|
|
|
|
};
|
|
|
|
|
|
|
|
module_platform_driver(highbank_l2_edac_driver);
|
|
|
|
|
|
|
|
MODULE_LICENSE("GPL v2");
|
|
|
|
MODULE_AUTHOR("Calxeda, Inc.");
|
|
|
|
MODULE_DESCRIPTION("EDAC Driver for Calxeda Highbank L2 Cache");
|