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Diffstat (limited to 'arch/ia64/kernel/err_inject.c')
-rw-r--r--arch/ia64/kernel/err_inject.c273
1 files changed, 0 insertions, 273 deletions
diff --git a/arch/ia64/kernel/err_inject.c b/arch/ia64/kernel/err_inject.c
deleted file mode 100644
index dd5bfed52031..000000000000
--- a/arch/ia64/kernel/err_inject.c
+++ /dev/null
@@ -1,273 +0,0 @@
-/*
- * err_inject.c -
- * 1.) Inject errors to a processor.
- * 2.) Query error injection capabilities.
- * This driver along with user space code can be acting as an error
- * injection tool.
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License as published by
- * the Free Software Foundation; either version 2 of the License, or
- * (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful, but
- * WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE, GOOD TITLE or
- * NON INFRINGEMENT. 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, write to the Free Software
- * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
- *
- * Written by: Fenghua Yu <fenghua.yu@intel.com>, Intel Corporation
- * Copyright (C) 2006, Intel Corp. All rights reserved.
- *
- */
-#include <linux/device.h>
-#include <linux/init.h>
-#include <linux/mm.h>
-#include <linux/cpu.h>
-#include <linux/module.h>
-
-#define ERR_INJ_DEBUG
-
-#define ERR_DATA_BUFFER_SIZE 3 // Three 8-byte;
-
-#define define_one_ro(name) \
-static DEVICE_ATTR(name, 0444, show_##name, NULL)
-
-#define define_one_rw(name) \
-static DEVICE_ATTR(name, 0644, show_##name, store_##name)
-
-static u64 call_start[NR_CPUS];
-static u64 phys_addr[NR_CPUS];
-static u64 err_type_info[NR_CPUS];
-static u64 err_struct_info[NR_CPUS];
-static struct {
- u64 data1;
- u64 data2;
- u64 data3;
-} __attribute__((__aligned__(16))) err_data_buffer[NR_CPUS];
-static s64 status[NR_CPUS];
-static u64 capabilities[NR_CPUS];
-static u64 resources[NR_CPUS];
-
-#define show(name) \
-static ssize_t \
-show_##name(struct device *dev, struct device_attribute *attr, \
- char *buf) \
-{ \
- u32 cpu=dev->id; \
- return sprintf(buf, "%llx\n", name[cpu]); \
-}
-
-#define store(name) \
-static ssize_t \
-store_##name(struct device *dev, struct device_attribute *attr, \
- const char *buf, size_t size) \
-{ \
- unsigned int cpu=dev->id; \
- name[cpu] = simple_strtoull(buf, NULL, 16); \
- return size; \
-}
-
-show(call_start)
-
-/* It's user's responsibility to call the PAL procedure on a specific
- * processor. The cpu number in driver is only used for storing data.
- */
-static ssize_t
-store_call_start(struct device *dev, struct device_attribute *attr,
- const char *buf, size_t size)
-{
- unsigned int cpu=dev->id;
- unsigned long call_start = simple_strtoull(buf, NULL, 16);
-
-#ifdef ERR_INJ_DEBUG
- printk(KERN_DEBUG "pal_mc_err_inject for cpu%d:\n", cpu);
- printk(KERN_DEBUG "err_type_info=%llx,\n", err_type_info[cpu]);
- printk(KERN_DEBUG "err_struct_info=%llx,\n", err_struct_info[cpu]);
- printk(KERN_DEBUG "err_data_buffer=%llx, %llx, %llx.\n",
- err_data_buffer[cpu].data1,
- err_data_buffer[cpu].data2,
- err_data_buffer[cpu].data3);
-#endif
- switch (call_start) {
- case 0: /* Do nothing. */
- break;
- case 1: /* Call pal_mc_error_inject in physical mode. */
- status[cpu]=ia64_pal_mc_error_inject_phys(err_type_info[cpu],
- err_struct_info[cpu],
- ia64_tpa(&err_data_buffer[cpu]),
- &capabilities[cpu],
- &resources[cpu]);
- break;
- case 2: /* Call pal_mc_error_inject in virtual mode. */
- status[cpu]=ia64_pal_mc_error_inject_virt(err_type_info[cpu],
- err_struct_info[cpu],
- ia64_tpa(&err_data_buffer[cpu]),
- &capabilities[cpu],
- &resources[cpu]);
- break;
- default:
- status[cpu] = -EINVAL;
- break;
- }
-
-#ifdef ERR_INJ_DEBUG
- printk(KERN_DEBUG "Returns: status=%d,\n", (int)status[cpu]);
- printk(KERN_DEBUG "capabilities=%llx,\n", capabilities[cpu]);
- printk(KERN_DEBUG "resources=%llx\n", resources[cpu]);
-#endif
- return size;
-}
-
-show(err_type_info)
-store(err_type_info)
-
-static ssize_t
-show_virtual_to_phys(struct device *dev, struct device_attribute *attr,
- char *buf)
-{
- unsigned int cpu=dev->id;
- return sprintf(buf, "%llx\n", phys_addr[cpu]);
-}
-
-static ssize_t
-store_virtual_to_phys(struct device *dev, struct device_attribute *attr,
- const char *buf, size_t size)
-{
- unsigned int cpu=dev->id;
- u64 virt_addr=simple_strtoull(buf, NULL, 16);
- int ret;
-
- ret = get_user_pages_fast(virt_addr, 1, FOLL_WRITE, NULL);
- if (ret<=0) {
-#ifdef ERR_INJ_DEBUG
- printk("Virtual address %llx is not existing.\n", virt_addr);
-#endif
- return -EINVAL;
- }
-
- phys_addr[cpu] = ia64_tpa(virt_addr);
- return size;
-}
-
-show(err_struct_info)
-store(err_struct_info)
-
-static ssize_t
-show_err_data_buffer(struct device *dev,
- struct device_attribute *attr, char *buf)
-{
- unsigned int cpu=dev->id;
-
- return sprintf(buf, "%llx, %llx, %llx\n",
- err_data_buffer[cpu].data1,
- err_data_buffer[cpu].data2,
- err_data_buffer[cpu].data3);
-}
-
-static ssize_t
-store_err_data_buffer(struct device *dev,
- struct device_attribute *attr,
- const char *buf, size_t size)
-{
- unsigned int cpu=dev->id;
- int ret;
-
-#ifdef ERR_INJ_DEBUG
- printk("write err_data_buffer=[%llx,%llx,%llx] on cpu%d\n",
- err_data_buffer[cpu].data1,
- err_data_buffer[cpu].data2,
- err_data_buffer[cpu].data3,
- cpu);
-#endif
- ret = sscanf(buf, "%llx, %llx, %llx",
- &err_data_buffer[cpu].data1,
- &err_data_buffer[cpu].data2,
- &err_data_buffer[cpu].data3);
- if (ret!=ERR_DATA_BUFFER_SIZE)
- return -EINVAL;
-
- return size;
-}
-
-show(status)
-show(capabilities)
-show(resources)
-
-define_one_rw(call_start);
-define_one_rw(err_type_info);
-define_one_rw(err_struct_info);
-define_one_rw(err_data_buffer);
-define_one_rw(virtual_to_phys);
-define_one_ro(status);
-define_one_ro(capabilities);
-define_one_ro(resources);
-
-static struct attribute *default_attrs[] = {
- &dev_attr_call_start.attr,
- &dev_attr_virtual_to_phys.attr,
- &dev_attr_err_type_info.attr,
- &dev_attr_err_struct_info.attr,
- &dev_attr_err_data_buffer.attr,
- &dev_attr_status.attr,
- &dev_attr_capabilities.attr,
- &dev_attr_resources.attr,
- NULL
-};
-
-static struct attribute_group err_inject_attr_group = {
- .attrs = default_attrs,
- .name = "err_inject"
-};
-/* Add/Remove err_inject interface for CPU device */
-static int err_inject_add_dev(unsigned int cpu)
-{
- struct device *sys_dev = get_cpu_device(cpu);
-
- return sysfs_create_group(&sys_dev->kobj, &err_inject_attr_group);
-}
-
-static int err_inject_remove_dev(unsigned int cpu)
-{
- struct device *sys_dev = get_cpu_device(cpu);
-
- sysfs_remove_group(&sys_dev->kobj, &err_inject_attr_group);
- return 0;
-}
-
-static enum cpuhp_state hp_online;
-
-static int __init err_inject_init(void)
-{
- int ret;
-#ifdef ERR_INJ_DEBUG
- printk(KERN_INFO "Enter error injection driver.\n");
-#endif
-
- ret = cpuhp_setup_state(CPUHP_AP_ONLINE_DYN, "ia64/err_inj:online",
- err_inject_add_dev, err_inject_remove_dev);
- if (ret >= 0) {
- hp_online = ret;
- ret = 0;
- }
- return ret;
-}
-
-static void __exit err_inject_exit(void)
-{
-#ifdef ERR_INJ_DEBUG
- printk(KERN_INFO "Exit error injection driver.\n");
-#endif
- cpuhp_remove_state(hp_online);
-}
-
-module_init(err_inject_init);
-module_exit(err_inject_exit);
-
-MODULE_AUTHOR("Fenghua Yu <fenghua.yu@intel.com>");
-MODULE_DESCRIPTION("MC error injection kernel sysfs interface");
-MODULE_LICENSE("GPL");
generated by cgit v1.2.3-70-g09d2 (git 2.47.1) at 2024-12-28 10:49:41 +0000