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path: root/drivers/edac/octeon_edac-pc.c
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Diffstat (limited to 'drivers/edac/octeon_edac-pc.c')
-rw-r--r--drivers/edac/octeon_edac-pc.c137
1 files changed, 70 insertions, 67 deletions
diff --git a/drivers/edac/octeon_edac-pc.c b/drivers/edac/octeon_edac-pc.c
index 9d13061744e4..14a5e57f2b32 100644
--- a/drivers/edac/octeon_edac-pc.c
+++ b/drivers/edac/octeon_edac-pc.c
@@ -3,6 +3,8 @@
* 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>
*/
@@ -19,93 +21,112 @@
#include <asm/octeon/cvmx.h>
#include <asm/mipsregs.h>
-#define EDAC_MOD_STR "octeon"
-
extern int register_co_cache_error_notifier(struct notifier_block *nb);
extern int unregister_co_cache_error_notifier(struct notifier_block *nb);
extern unsigned long long cache_err_dcache[NR_CPUS];
-static struct edac_device_ctl_info *ed_cavium;
+struct co_cache_error {
+ struct notifier_block notifier;
+ struct edac_device_ctl_info *ed;
+};
-/*
+/**
* EDAC CPU cache error callback
*
+ * @event: non-zero if unrecoverable.
*/
-
static int co_cache_error_event(struct notifier_block *this,
unsigned long event, void *ptr)
{
+ struct co_cache_error *p = container_of(this, struct co_cache_error,
+ notifier);
+
unsigned int core = cvmx_get_core_num();
unsigned int cpu = smp_processor_id();
- uint64_t icache_err = read_octeon_c0_icacheerr();
- struct edac_device_ctl_info *ed = ed_cavium;
-
- edac_device_printk(ed, KERN_ERR,
- "Cache error exception on core %d / processor %d:\n",
- core, cpu);
- edac_device_printk(ed, KERN_ERR,
- "cp0_errorepc == %lx\n", read_c0_errorepc());
+ u64 icache_err = read_octeon_c0_icacheerr();
+ u64 dcache_err;
+
+ if (event) {
+ dcache_err = cache_err_dcache[core];
+ cache_err_dcache[core] = 0;
+ } else {
+ dcache_err = read_octeon_c0_dcacheerr();
+ }
+
if (icache_err & 1) {
- edac_device_printk(ed, KERN_ERR, "CacheErr (Icache) == %llx\n",
- (unsigned long long)icache_err);
+ edac_device_printk(p->ed, KERN_ERR,
+ "CacheErr (Icache):%llx, core %d/cpu %d, cp0_errorepc == %lx\n",
+ (unsigned long long)icache_err, core, cpu,
+ read_c0_errorepc());
write_octeon_c0_icacheerr(0);
- edac_device_handle_ce(ed, 0, 0, ed->ctl_name);
+ edac_device_handle_ce(p->ed, cpu, 1, "icache");
}
- if (cache_err_dcache[core] & 1) {
- edac_device_printk(ed, KERN_ERR, "CacheErr (Dcache) == %llx\n",
- (unsigned long long)cache_err_dcache[core]);
- cache_err_dcache[core] = 0;
- edac_device_handle_ue(ed, 0, 0, ed->ctl_name);
+ if (dcache_err & 1) {
+ edac_device_printk(p->ed, KERN_ERR,
+ "CacheErr (Dcache):%llx, core %d/cpu %d, cp0_errorepc == %lx\n",
+ (unsigned long long)dcache_err, core, cpu,
+ read_c0_errorepc());
+ if (event)
+ edac_device_handle_ue(p->ed, cpu, 0, "dcache");
+ else
+ edac_device_handle_ce(p->ed, cpu, 0, "dcache");
+
+ /* Clear the error indication */
+ if (OCTEON_IS_MODEL(OCTEON_FAM_2))
+ write_octeon_c0_dcacheerr(1);
+ else
+ write_octeon_c0_dcacheerr(0);
}
- return NOTIFY_DONE;
+ return NOTIFY_STOP;
}
-static struct notifier_block co_cache_error_notifier = {
- .notifier_call = co_cache_error_event,
-};
-
static int __devinit co_cache_error_probe(struct platform_device *pdev)
{
- struct edac_device_ctl_info *ed;
- int res = 0;
+ struct co_cache_error *p = devm_kzalloc(&pdev->dev, sizeof(*p),
+ GFP_KERNEL);
+ if (!p)
+ return -ENOMEM;
+
+ p->notifier.notifier_call = co_cache_error_event;
+ platform_set_drvdata(pdev, p);
+
+ p->ed = edac_device_alloc_ctl_info(0, "cpu", num_possible_cpus(),
+ "cache", 2, 0, NULL, 0,
+ edac_device_alloc_index());
+ if (!p->ed)
+ goto err;
- ed = edac_device_alloc_ctl_info(0, "cpu", 1, NULL, 0, 0, NULL, 0,
- edac_device_alloc_index());
+ p->ed->dev = &pdev->dev;
- ed->dev = &pdev->dev;
- platform_set_drvdata(pdev, ed);
- ed->dev_name = dev_name(&pdev->dev);
+ p->ed->dev_name = dev_name(&pdev->dev);
- ed->mod_name = "octeon-cpu";
- ed->ctl_name = "co_cpu_err";
+ p->ed->mod_name = "octeon-cpu";
+ p->ed->ctl_name = "cache";
- if (edac_device_add_device(ed) > 0) {
+ if (edac_device_add_device(p->ed)) {
pr_err("%s: edac_device_add_device() failed\n", __func__);
- goto err;
+ goto err1;
}
- register_co_cache_error_notifier(&co_cache_error_notifier);
- ed_cavium = ed;
+ register_co_cache_error_notifier(&p->notifier);
return 0;
+err1:
+ edac_device_free_ctl_info(p->ed);
err:
- edac_device_free_ctl_info(ed);
-
- return res;
+ return -ENXIO;
}
static int co_cache_error_remove(struct platform_device *pdev)
{
- struct edac_device_ctl_info *ed = platform_get_drvdata(pdev);
+ struct co_cache_error *p = platform_get_drvdata(pdev);
- unregister_co_cache_error_notifier(&co_cache_error_notifier);
- ed_cavium = NULL;
+ unregister_co_cache_error_notifier(&p->notifier);
edac_device_del_device(&pdev->dev);
- edac_device_free_ctl_info(ed);
-
+ edac_device_free_ctl_info(p->ed);
return 0;
}
@@ -113,28 +134,10 @@ static struct platform_driver co_cache_error_driver = {
.probe = co_cache_error_probe,
.remove = co_cache_error_remove,
.driver = {
- .name = "co_pc_edac",
+ .name = "octeon_pc_edac",
}
};
-
-static int __init co_edac_init(void)
-{
- int ret;
-
- ret = platform_driver_register(&co_cache_error_driver);
- if (ret)
- pr_warning(EDAC_MOD_STR "CPU err failed to register\n");
-
- return ret;
-}
-
-static void __exit co_edac_exit(void)
-{
- platform_driver_unregister(&co_cache_error_driver);
-}
-
-module_init(co_edac_init);
-module_exit(co_edac_exit);
+module_platform_driver(co_cache_error_driver);
MODULE_LICENSE("GPL");
MODULE_AUTHOR("Ralf Baechle <ralf@linux-mips.org>");