diff options
Diffstat (limited to 'drivers/acpi/debug.c')
| -rw-r--r-- | drivers/acpi/debug.c | 406 |
1 files changed, 0 insertions, 406 deletions
diff --git a/drivers/acpi/debug.c b/drivers/acpi/debug.c deleted file mode 100644 index 146135e7a6a..00000000000 --- a/drivers/acpi/debug.c +++ /dev/null @@ -1,406 +0,0 @@ -/* - * debug.c - ACPI debug interface to userspace. - */ - -#include <linux/proc_fs.h> -#include <linux/seq_file.h> -#include <linux/init.h> -#include <linux/module.h> -#include <linux/kernel.h> -#include <linux/moduleparam.h> -#include <linux/debugfs.h> -#include <linux/slab.h> -#include <asm/uaccess.h> -#include <acpi/acpi_drivers.h> - -#define _COMPONENT ACPI_SYSTEM_COMPONENT -ACPI_MODULE_NAME("debug"); - -struct acpi_dlayer { - const char *name; - unsigned long value; -}; -struct acpi_dlevel { - const char *name; - unsigned long value; -}; -#define ACPI_DEBUG_INIT(v) { .name = #v, .value = v } - -static const struct acpi_dlayer acpi_debug_layers[] = { - ACPI_DEBUG_INIT(ACPI_UTILITIES), - ACPI_DEBUG_INIT(ACPI_HARDWARE), - ACPI_DEBUG_INIT(ACPI_EVENTS), - ACPI_DEBUG_INIT(ACPI_TABLES), - ACPI_DEBUG_INIT(ACPI_NAMESPACE), - ACPI_DEBUG_INIT(ACPI_PARSER), - ACPI_DEBUG_INIT(ACPI_DISPATCHER), - ACPI_DEBUG_INIT(ACPI_EXECUTER), - ACPI_DEBUG_INIT(ACPI_RESOURCES), - ACPI_DEBUG_INIT(ACPI_CA_DEBUGGER), - ACPI_DEBUG_INIT(ACPI_OS_SERVICES), - ACPI_DEBUG_INIT(ACPI_CA_DISASSEMBLER), - ACPI_DEBUG_INIT(ACPI_COMPILER), - ACPI_DEBUG_INIT(ACPI_TOOLS), - - ACPI_DEBUG_INIT(ACPI_BUS_COMPONENT), - ACPI_DEBUG_INIT(ACPI_AC_COMPONENT), - ACPI_DEBUG_INIT(ACPI_BATTERY_COMPONENT), - ACPI_DEBUG_INIT(ACPI_BUTTON_COMPONENT), - ACPI_DEBUG_INIT(ACPI_SBS_COMPONENT), - ACPI_DEBUG_INIT(ACPI_FAN_COMPONENT), - ACPI_DEBUG_INIT(ACPI_PCI_COMPONENT), - ACPI_DEBUG_INIT(ACPI_POWER_COMPONENT), - ACPI_DEBUG_INIT(ACPI_CONTAINER_COMPONENT), - ACPI_DEBUG_INIT(ACPI_SYSTEM_COMPONENT), - ACPI_DEBUG_INIT(ACPI_THERMAL_COMPONENT), - ACPI_DEBUG_INIT(ACPI_MEMORY_DEVICE_COMPONENT), - ACPI_DEBUG_INIT(ACPI_VIDEO_COMPONENT), - ACPI_DEBUG_INIT(ACPI_PROCESSOR_COMPONENT), -}; - -static const struct acpi_dlevel acpi_debug_levels[] = { - ACPI_DEBUG_INIT(ACPI_LV_INIT), - ACPI_DEBUG_INIT(ACPI_LV_DEBUG_OBJECT), - ACPI_DEBUG_INIT(ACPI_LV_INFO), - - ACPI_DEBUG_INIT(ACPI_LV_INIT_NAMES), - ACPI_DEBUG_INIT(ACPI_LV_PARSE), - ACPI_DEBUG_INIT(ACPI_LV_LOAD), - ACPI_DEBUG_INIT(ACPI_LV_DISPATCH), - ACPI_DEBUG_INIT(ACPI_LV_EXEC), - ACPI_DEBUG_INIT(ACPI_LV_NAMES), - ACPI_DEBUG_INIT(ACPI_LV_OPREGION), - ACPI_DEBUG_INIT(ACPI_LV_BFIELD), - ACPI_DEBUG_INIT(ACPI_LV_TABLES), - ACPI_DEBUG_INIT(ACPI_LV_VALUES), - ACPI_DEBUG_INIT(ACPI_LV_OBJECTS), - ACPI_DEBUG_INIT(ACPI_LV_RESOURCES), - ACPI_DEBUG_INIT(ACPI_LV_USER_REQUESTS), - ACPI_DEBUG_INIT(ACPI_LV_PACKAGE), - - ACPI_DEBUG_INIT(ACPI_LV_ALLOCATIONS), - ACPI_DEBUG_INIT(ACPI_LV_FUNCTIONS), - ACPI_DEBUG_INIT(ACPI_LV_OPTIMIZATIONS), - - ACPI_DEBUG_INIT(ACPI_LV_MUTEX), - ACPI_DEBUG_INIT(ACPI_LV_THREADS), - ACPI_DEBUG_INIT(ACPI_LV_IO), - ACPI_DEBUG_INIT(ACPI_LV_INTERRUPTS), - - ACPI_DEBUG_INIT(ACPI_LV_AML_DISASSEMBLE), - ACPI_DEBUG_INIT(ACPI_LV_VERBOSE_INFO), - ACPI_DEBUG_INIT(ACPI_LV_FULL_TABLES), - ACPI_DEBUG_INIT(ACPI_LV_EVENTS), -}; - -/* -------------------------------------------------------------------------- - FS Interface (/sys) - -------------------------------------------------------------------------- */ -static int param_get_debug_layer(char *buffer, struct kernel_param *kp) { - int result = 0; - int i; - - result = sprintf(buffer, "%-25s\tHex SET\n", "Description"); - - for(i = 0; i <ARRAY_SIZE(acpi_debug_layers); i++) { - result += sprintf(buffer+result, "%-25s\t0x%08lX [%c]\n", - acpi_debug_layers[i].name, - acpi_debug_layers[i].value, - (acpi_dbg_layer & acpi_debug_layers[i].value) ? '*' : ' '); - } - result += sprintf(buffer+result, "%-25s\t0x%08X [%c]\n", "ACPI_ALL_DRIVERS", - ACPI_ALL_DRIVERS, - (acpi_dbg_layer & ACPI_ALL_DRIVERS) == - ACPI_ALL_DRIVERS ? '*' : (acpi_dbg_layer & - ACPI_ALL_DRIVERS) == 0 ? ' ' : '-'); - result += sprintf(buffer+result, "--\ndebug_layer = 0x%08X ( * = enabled)\n", acpi_dbg_layer); - - return result; -} - -static int param_get_debug_level(char *buffer, struct kernel_param *kp) { - int result = 0; - int i; - - result = sprintf(buffer, "%-25s\tHex SET\n", "Description"); - - for (i = 0; i < ARRAY_SIZE(acpi_debug_levels); i++) { - result += sprintf(buffer+result, "%-25s\t0x%08lX [%c]\n", - acpi_debug_levels[i].name, - acpi_debug_levels[i].value, - (acpi_dbg_level & acpi_debug_levels[i]. - value) ? '*' : ' '); - } - result += sprintf(buffer+result, "--\ndebug_level = 0x%08X (* = enabled)\n", - acpi_dbg_level); - - return result; -} - -module_param_call(debug_layer, param_set_uint, param_get_debug_layer, &acpi_dbg_layer, 0644); -module_param_call(debug_level, param_set_uint, param_get_debug_level, &acpi_dbg_level, 0644); - -static char trace_method_name[6]; -module_param_string(trace_method_name, trace_method_name, 6, 0644); -static unsigned int trace_debug_layer; -module_param(trace_debug_layer, uint, 0644); -static unsigned int trace_debug_level; -module_param(trace_debug_level, uint, 0644); - -static int param_set_trace_state(const char *val, struct kernel_param *kp) -{ - int result = 0; - - if (!strncmp(val, "enable", strlen("enable") - 1)) { - result = acpi_debug_trace(trace_method_name, trace_debug_level, - trace_debug_layer, 0); - if (result) - result = -EBUSY; - goto exit; - } - - if (!strncmp(val, "disable", strlen("disable") - 1)) { - int name = 0; - result = acpi_debug_trace((char *)&name, trace_debug_level, - trace_debug_layer, 0); - if (result) - result = -EBUSY; - goto exit; - } - - if (!strncmp(val, "1", 1)) { - result = acpi_debug_trace(trace_method_name, trace_debug_level, - trace_debug_layer, 1); - if (result) - result = -EBUSY; - goto exit; - } - - result = -EINVAL; -exit: - return result; -} - -static int param_get_trace_state(char *buffer, struct kernel_param *kp) -{ - if (!acpi_gbl_trace_method_name) - return sprintf(buffer, "disable"); - else { - if (acpi_gbl_trace_flags & 1) - return sprintf(buffer, "1"); - else - return sprintf(buffer, "enable"); - } - return 0; -} - -module_param_call(trace_state, param_set_trace_state, param_get_trace_state, - NULL, 0644); - -/* -------------------------------------------------------------------------- - DebugFS Interface - -------------------------------------------------------------------------- */ - -static ssize_t cm_write(struct file *file, const char __user *user_buf, - size_t count, loff_t *ppos) -{ - static char *buf; - static int uncopied_bytes; - struct acpi_table_header table; - acpi_status status; - - if (!(*ppos)) { - /* parse the table header to get the table length */ - if (count <= sizeof(struct acpi_table_header)) - return -EINVAL; - if (copy_from_user(&table, user_buf, - sizeof(struct acpi_table_header))) - return -EFAULT; - uncopied_bytes = table.length; - buf = kzalloc(uncopied_bytes, GFP_KERNEL); - if (!buf) - return -ENOMEM; - } - - if (uncopied_bytes < count) { - kfree(buf); - return -EINVAL; - } - - if (copy_from_user(buf + (*ppos), user_buf, count)) { - kfree(buf); - return -EFAULT; - } - - uncopied_bytes -= count; - *ppos += count; - - if (!uncopied_bytes) { - status = acpi_install_method(buf); - kfree(buf); - if (ACPI_FAILURE(status)) - return -EINVAL; - add_taint(TAINT_OVERRIDDEN_ACPI_TABLE); - } - - return count; -} - -static const struct file_operations cm_fops = { - .write = cm_write, -}; - -static int acpi_debugfs_init(void) -{ - struct dentry *acpi_dir, *cm_dentry; - - acpi_dir = debugfs_create_dir("acpi", NULL); - if (!acpi_dir) - goto err; - - cm_dentry = debugfs_create_file("custom_method", S_IWUGO, - acpi_dir, NULL, &cm_fops); - if (!cm_dentry) - goto err; - - return 0; - -err: - if (acpi_dir) - debugfs_remove(acpi_dir); - return -EINVAL; -} - -/* -------------------------------------------------------------------------- - FS Interface (/proc) - -------------------------------------------------------------------------- */ -#ifdef CONFIG_ACPI_PROCFS -#define ACPI_SYSTEM_FILE_DEBUG_LAYER "debug_layer" -#define ACPI_SYSTEM_FILE_DEBUG_LEVEL "debug_level" - -static int acpi_system_debug_proc_show(struct seq_file *m, void *v) -{ - unsigned int i; - - seq_printf(m, "%-25s\tHex SET\n", "Description"); - - switch ((unsigned long)m->private) { - case 0: - for (i = 0; i < ARRAY_SIZE(acpi_debug_layers); i++) { - seq_printf(m, "%-25s\t0x%08lX [%c]\n", - acpi_debug_layers[i].name, - acpi_debug_layers[i].value, - (acpi_dbg_layer & acpi_debug_layers[i]. - value) ? '*' : ' '); - } - seq_printf(m, "%-25s\t0x%08X [%c]\n", "ACPI_ALL_DRIVERS", - ACPI_ALL_DRIVERS, - (acpi_dbg_layer & ACPI_ALL_DRIVERS) == - ACPI_ALL_DRIVERS ? '*' : (acpi_dbg_layer & - ACPI_ALL_DRIVERS) == - 0 ? ' ' : '-'); - seq_printf(m, - "--\ndebug_layer = 0x%08X (* = enabled, - = partial)\n", - acpi_dbg_layer); - break; - case 1: - for (i = 0; i < ARRAY_SIZE(acpi_debug_levels); i++) { - seq_printf(m, "%-25s\t0x%08lX [%c]\n", - acpi_debug_levels[i].name, - acpi_debug_levels[i].value, - (acpi_dbg_level & acpi_debug_levels[i]. - value) ? '*' : ' '); - } - seq_printf(m, "--\ndebug_level = 0x%08X (* = enabled)\n", - acpi_dbg_level); - break; - } - return 0; -} - -static int acpi_system_debug_proc_open(struct inode *inode, struct file *file) -{ - return single_open(file, acpi_system_debug_proc_show, PDE(inode)->data); -} - -static ssize_t acpi_system_debug_proc_write(struct file *file, - const char __user * buffer, - size_t count, loff_t *pos) -{ - char debug_string[12] = { '\0' }; - - - if (count > sizeof(debug_string) - 1) - return -EINVAL; - - if (copy_from_user(debug_string, buffer, count)) - return -EFAULT; - - debug_string[count] = '\0'; - - switch ((unsigned long)PDE(file->f_path.dentry->d_inode)->data) { - case 0: - acpi_dbg_layer = simple_strtoul(debug_string, NULL, 0); - break; - case 1: - acpi_dbg_level = simple_strtoul(debug_string, NULL, 0); - break; - default: - return -EINVAL; - } - - return count; -} - -static const struct file_operations acpi_system_debug_proc_fops = { - .owner = THIS_MODULE, - .open = acpi_system_debug_proc_open, - .read = seq_read, - .llseek = seq_lseek, - .release = single_release, - .write = acpi_system_debug_proc_write, -}; -#endif - -int __init acpi_procfs_init(void) -{ -#ifdef CONFIG_ACPI_PROCFS - struct proc_dir_entry *entry; - int error = 0; - char *name; - - /* 'debug_layer' [R/W] */ - name = ACPI_SYSTEM_FILE_DEBUG_LAYER; - entry = proc_create_data(name, S_IFREG | S_IRUGO | S_IWUSR, - acpi_root_dir, &acpi_system_debug_proc_fops, - (void *)0); - if (!entry) - goto Error; - - /* 'debug_level' [R/W] */ - name = ACPI_SYSTEM_FILE_DEBUG_LEVEL; - entry = proc_create_data(name, S_IFREG | S_IRUGO | S_IWUSR, - acpi_root_dir, &acpi_system_debug_proc_fops, - (void *)1); - if (!entry) - goto Error; - - Done: - return error; - - Error: - remove_proc_entry(ACPI_SYSTEM_FILE_DEBUG_LEVEL, acpi_root_dir); - remove_proc_entry(ACPI_SYSTEM_FILE_DEBUG_LAYER, acpi_root_dir); - error = -ENODEV; - goto Done; -#else - return 0; -#endif -} - -int __init acpi_debug_init(void) -{ - acpi_debugfs_init(); - acpi_procfs_init(); - return 0; -} |