diff options
Diffstat (limited to 'drivers/edac/mce_amd_inj.c')
| -rw-r--r-- | drivers/edac/mce_amd_inj.c | 173 |
1 files changed, 0 insertions, 173 deletions
diff --git a/drivers/edac/mce_amd_inj.c b/drivers/edac/mce_amd_inj.c deleted file mode 100644 index 5e46a9fea31b..000000000000 --- a/drivers/edac/mce_amd_inj.c +++ /dev/null @@ -1,173 +0,0 @@ -/* - * A simple MCE injection facility for testing the MCE decoding code. This - * driver should be built as module so that it can be loaded on production - * kernels for testing purposes. - * - * This file may be distributed under the terms of the GNU General Public - * License version 2. - * - * Copyright (c) 2010: Borislav Petkov <bp@alien8.de> - * Advanced Micro Devices Inc. - */ - -#include <linux/kobject.h> -#include <linux/device.h> -#include <linux/edac.h> -#include <linux/module.h> -#include <asm/mce.h> - -#include "mce_amd.h" - -struct edac_mce_attr { - struct attribute attr; - ssize_t (*show) (struct kobject *kobj, struct edac_mce_attr *attr, char *buf); - ssize_t (*store)(struct kobject *kobj, struct edac_mce_attr *attr, - const char *buf, size_t count); -}; - -#define EDAC_MCE_ATTR(_name, _mode, _show, _store) \ -static struct edac_mce_attr mce_attr_##_name = __ATTR(_name, _mode, _show, _store) - -static struct kobject *mce_kobj; - -/* - * Collect all the MCi_XXX settings - */ -static struct mce i_mce; - -#define MCE_INJECT_STORE(reg) \ -static ssize_t edac_inject_##reg##_store(struct kobject *kobj, \ - struct edac_mce_attr *attr, \ - const char *data, size_t count)\ -{ \ - int ret = 0; \ - unsigned long value; \ - \ - ret = kstrtoul(data, 16, &value); \ - if (ret < 0) \ - printk(KERN_ERR "Error writing MCE " #reg " field.\n"); \ - \ - i_mce.reg = value; \ - \ - return count; \ -} - -MCE_INJECT_STORE(status); -MCE_INJECT_STORE(misc); -MCE_INJECT_STORE(addr); - -#define MCE_INJECT_SHOW(reg) \ -static ssize_t edac_inject_##reg##_show(struct kobject *kobj, \ - struct edac_mce_attr *attr, \ - char *buf) \ -{ \ - return sprintf(buf, "0x%016llx\n", i_mce.reg); \ -} - -MCE_INJECT_SHOW(status); -MCE_INJECT_SHOW(misc); -MCE_INJECT_SHOW(addr); - -EDAC_MCE_ATTR(status, 0644, edac_inject_status_show, edac_inject_status_store); -EDAC_MCE_ATTR(misc, 0644, edac_inject_misc_show, edac_inject_misc_store); -EDAC_MCE_ATTR(addr, 0644, edac_inject_addr_show, edac_inject_addr_store); - -/* - * This denotes into which bank we're injecting and triggers - * the injection, at the same time. - */ -static ssize_t edac_inject_bank_store(struct kobject *kobj, - struct edac_mce_attr *attr, - const char *data, size_t count) -{ - int ret = 0; - unsigned long value; - - ret = kstrtoul(data, 10, &value); - if (ret < 0) { - printk(KERN_ERR "Invalid bank value!\n"); - return -EINVAL; - } - - if (value > 5) - if (boot_cpu_data.x86 != 0x15 || value > 6) { - printk(KERN_ERR "Non-existent MCE bank: %lu\n", value); - return -EINVAL; - } - - i_mce.bank = value; - - amd_decode_mce(NULL, 0, &i_mce); - - return count; -} - -static ssize_t edac_inject_bank_show(struct kobject *kobj, - struct edac_mce_attr *attr, char *buf) -{ - return sprintf(buf, "%d\n", i_mce.bank); -} - -EDAC_MCE_ATTR(bank, 0644, edac_inject_bank_show, edac_inject_bank_store); - -static struct edac_mce_attr *sysfs_attrs[] = { &mce_attr_status, &mce_attr_misc, - &mce_attr_addr, &mce_attr_bank -}; - -static int __init edac_init_mce_inject(void) -{ - struct bus_type *edac_subsys = NULL; - int i, err = 0; - - edac_subsys = edac_get_sysfs_subsys(); - if (!edac_subsys) - return -EINVAL; - - mce_kobj = kobject_create_and_add("mce", &edac_subsys->dev_root->kobj); - if (!mce_kobj) { - printk(KERN_ERR "Error creating a mce kset.\n"); - err = -ENOMEM; - goto err_mce_kobj; - } - - for (i = 0; i < ARRAY_SIZE(sysfs_attrs); i++) { - err = sysfs_create_file(mce_kobj, &sysfs_attrs[i]->attr); - if (err) { - printk(KERN_ERR "Error creating %s in sysfs.\n", - sysfs_attrs[i]->attr.name); - goto err_sysfs_create; - } - } - return 0; - -err_sysfs_create: - while (--i >= 0) - sysfs_remove_file(mce_kobj, &sysfs_attrs[i]->attr); - - kobject_del(mce_kobj); - -err_mce_kobj: - edac_put_sysfs_subsys(); - - return err; -} - -static void __exit edac_exit_mce_inject(void) -{ - int i; - - for (i = 0; i < ARRAY_SIZE(sysfs_attrs); i++) - sysfs_remove_file(mce_kobj, &sysfs_attrs[i]->attr); - - kobject_del(mce_kobj); - - edac_put_sysfs_subsys(); -} - -module_init(edac_init_mce_inject); -module_exit(edac_exit_mce_inject); - -MODULE_LICENSE("GPL"); -MODULE_AUTHOR("Borislav Petkov <bp@alien8.de>"); -MODULE_AUTHOR("AMD Inc."); -MODULE_DESCRIPTION("MCE injection facility for testing MCE decoding"); |