2 * debug.c - ACPI debug interface to userspace.
5 #include <linux/proc_fs.h>
6 #include <linux/seq_file.h>
7 #include <linux/init.h>
8 #include <linux/module.h>
9 #include <linux/kernel.h>
10 #include <linux/moduleparam.h>
11 #include <linux/debugfs.h>
12 #include <linux/slab.h>
13 #include <asm/uaccess.h>
14 #include <acpi/acpi_drivers.h>
16 #define _COMPONENT ACPI_SYSTEM_COMPONENT
17 ACPI_MODULE_NAME("debug");
27 #define ACPI_DEBUG_INIT(v) { .name = #v, .value = v }
29 static const struct acpi_dlayer acpi_debug_layers[] = {
30 ACPI_DEBUG_INIT(ACPI_UTILITIES),
31 ACPI_DEBUG_INIT(ACPI_HARDWARE),
32 ACPI_DEBUG_INIT(ACPI_EVENTS),
33 ACPI_DEBUG_INIT(ACPI_TABLES),
34 ACPI_DEBUG_INIT(ACPI_NAMESPACE),
35 ACPI_DEBUG_INIT(ACPI_PARSER),
36 ACPI_DEBUG_INIT(ACPI_DISPATCHER),
37 ACPI_DEBUG_INIT(ACPI_EXECUTER),
38 ACPI_DEBUG_INIT(ACPI_RESOURCES),
39 ACPI_DEBUG_INIT(ACPI_CA_DEBUGGER),
40 ACPI_DEBUG_INIT(ACPI_OS_SERVICES),
41 ACPI_DEBUG_INIT(ACPI_CA_DISASSEMBLER),
42 ACPI_DEBUG_INIT(ACPI_COMPILER),
43 ACPI_DEBUG_INIT(ACPI_TOOLS),
45 ACPI_DEBUG_INIT(ACPI_BUS_COMPONENT),
46 ACPI_DEBUG_INIT(ACPI_AC_COMPONENT),
47 ACPI_DEBUG_INIT(ACPI_BATTERY_COMPONENT),
48 ACPI_DEBUG_INIT(ACPI_BUTTON_COMPONENT),
49 ACPI_DEBUG_INIT(ACPI_SBS_COMPONENT),
50 ACPI_DEBUG_INIT(ACPI_FAN_COMPONENT),
51 ACPI_DEBUG_INIT(ACPI_PCI_COMPONENT),
52 ACPI_DEBUG_INIT(ACPI_POWER_COMPONENT),
53 ACPI_DEBUG_INIT(ACPI_CONTAINER_COMPONENT),
54 ACPI_DEBUG_INIT(ACPI_SYSTEM_COMPONENT),
55 ACPI_DEBUG_INIT(ACPI_THERMAL_COMPONENT),
56 ACPI_DEBUG_INIT(ACPI_MEMORY_DEVICE_COMPONENT),
57 ACPI_DEBUG_INIT(ACPI_VIDEO_COMPONENT),
58 ACPI_DEBUG_INIT(ACPI_PROCESSOR_COMPONENT),
61 static const struct acpi_dlevel acpi_debug_levels[] = {
62 ACPI_DEBUG_INIT(ACPI_LV_INIT),
63 ACPI_DEBUG_INIT(ACPI_LV_DEBUG_OBJECT),
64 ACPI_DEBUG_INIT(ACPI_LV_INFO),
66 ACPI_DEBUG_INIT(ACPI_LV_INIT_NAMES),
67 ACPI_DEBUG_INIT(ACPI_LV_PARSE),
68 ACPI_DEBUG_INIT(ACPI_LV_LOAD),
69 ACPI_DEBUG_INIT(ACPI_LV_DISPATCH),
70 ACPI_DEBUG_INIT(ACPI_LV_EXEC),
71 ACPI_DEBUG_INIT(ACPI_LV_NAMES),
72 ACPI_DEBUG_INIT(ACPI_LV_OPREGION),
73 ACPI_DEBUG_INIT(ACPI_LV_BFIELD),
74 ACPI_DEBUG_INIT(ACPI_LV_TABLES),
75 ACPI_DEBUG_INIT(ACPI_LV_VALUES),
76 ACPI_DEBUG_INIT(ACPI_LV_OBJECTS),
77 ACPI_DEBUG_INIT(ACPI_LV_RESOURCES),
78 ACPI_DEBUG_INIT(ACPI_LV_USER_REQUESTS),
79 ACPI_DEBUG_INIT(ACPI_LV_PACKAGE),
81 ACPI_DEBUG_INIT(ACPI_LV_ALLOCATIONS),
82 ACPI_DEBUG_INIT(ACPI_LV_FUNCTIONS),
83 ACPI_DEBUG_INIT(ACPI_LV_OPTIMIZATIONS),
85 ACPI_DEBUG_INIT(ACPI_LV_MUTEX),
86 ACPI_DEBUG_INIT(ACPI_LV_THREADS),
87 ACPI_DEBUG_INIT(ACPI_LV_IO),
88 ACPI_DEBUG_INIT(ACPI_LV_INTERRUPTS),
90 ACPI_DEBUG_INIT(ACPI_LV_AML_DISASSEMBLE),
91 ACPI_DEBUG_INIT(ACPI_LV_VERBOSE_INFO),
92 ACPI_DEBUG_INIT(ACPI_LV_FULL_TABLES),
93 ACPI_DEBUG_INIT(ACPI_LV_EVENTS),
96 /* --------------------------------------------------------------------------
98 -------------------------------------------------------------------------- */
99 static int param_get_debug_layer(char *buffer, struct kernel_param *kp) {
103 result = sprintf(buffer, "%-25s\tHex SET\n", "Description");
105 for(i = 0; i <ARRAY_SIZE(acpi_debug_layers); i++) {
106 result += sprintf(buffer+result, "%-25s\t0x%08lX [%c]\n",
107 acpi_debug_layers[i].name,
108 acpi_debug_layers[i].value,
109 (acpi_dbg_layer & acpi_debug_layers[i].value) ? '*' : ' ');
111 result += sprintf(buffer+result, "%-25s\t0x%08X [%c]\n", "ACPI_ALL_DRIVERS",
113 (acpi_dbg_layer & ACPI_ALL_DRIVERS) ==
114 ACPI_ALL_DRIVERS ? '*' : (acpi_dbg_layer &
115 ACPI_ALL_DRIVERS) == 0 ? ' ' : '-');
116 result += sprintf(buffer+result, "--\ndebug_layer = 0x%08X ( * = enabled)\n", acpi_dbg_layer);
121 static int param_get_debug_level(char *buffer, struct kernel_param *kp) {
125 result = sprintf(buffer, "%-25s\tHex SET\n", "Description");
127 for (i = 0; i < ARRAY_SIZE(acpi_debug_levels); i++) {
128 result += sprintf(buffer+result, "%-25s\t0x%08lX [%c]\n",
129 acpi_debug_levels[i].name,
130 acpi_debug_levels[i].value,
131 (acpi_dbg_level & acpi_debug_levels[i].
134 result += sprintf(buffer+result, "--\ndebug_level = 0x%08X (* = enabled)\n",
140 module_param_call(debug_layer, param_set_uint, param_get_debug_layer, &acpi_dbg_layer, 0644);
141 module_param_call(debug_level, param_set_uint, param_get_debug_level, &acpi_dbg_level, 0644);
143 static char trace_method_name[6];
144 module_param_string(trace_method_name, trace_method_name, 6, 0644);
145 static unsigned int trace_debug_layer;
146 module_param(trace_debug_layer, uint, 0644);
147 static unsigned int trace_debug_level;
148 module_param(trace_debug_level, uint, 0644);
150 static int param_set_trace_state(const char *val, struct kernel_param *kp)
154 if (!strncmp(val, "enable", strlen("enable") - 1)) {
155 result = acpi_debug_trace(trace_method_name, trace_debug_level,
156 trace_debug_layer, 0);
162 if (!strncmp(val, "disable", strlen("disable") - 1)) {
164 result = acpi_debug_trace((char *)&name, trace_debug_level,
165 trace_debug_layer, 0);
171 if (!strncmp(val, "1", 1)) {
172 result = acpi_debug_trace(trace_method_name, trace_debug_level,
173 trace_debug_layer, 1);
184 static int param_get_trace_state(char *buffer, struct kernel_param *kp)
186 if (!acpi_gbl_trace_method_name)
187 return sprintf(buffer, "disable");
189 if (acpi_gbl_trace_flags & 1)
190 return sprintf(buffer, "1");
192 return sprintf(buffer, "enable");
197 module_param_call(trace_state, param_set_trace_state, param_get_trace_state,
200 /* --------------------------------------------------------------------------
202 -------------------------------------------------------------------------- */
203 #ifdef CONFIG_ACPI_PROCFS
204 #define ACPI_SYSTEM_FILE_DEBUG_LAYER "debug_layer"
205 #define ACPI_SYSTEM_FILE_DEBUG_LEVEL "debug_level"
207 static int acpi_system_debug_proc_show(struct seq_file *m, void *v)
211 seq_printf(m, "%-25s\tHex SET\n", "Description");
213 switch ((unsigned long)m->private) {
215 for (i = 0; i < ARRAY_SIZE(acpi_debug_layers); i++) {
216 seq_printf(m, "%-25s\t0x%08lX [%c]\n",
217 acpi_debug_layers[i].name,
218 acpi_debug_layers[i].value,
219 (acpi_dbg_layer & acpi_debug_layers[i].
222 seq_printf(m, "%-25s\t0x%08X [%c]\n", "ACPI_ALL_DRIVERS",
224 (acpi_dbg_layer & ACPI_ALL_DRIVERS) ==
225 ACPI_ALL_DRIVERS ? '*' : (acpi_dbg_layer &
229 "--\ndebug_layer = 0x%08X (* = enabled, - = partial)\n",
233 for (i = 0; i < ARRAY_SIZE(acpi_debug_levels); i++) {
234 seq_printf(m, "%-25s\t0x%08lX [%c]\n",
235 acpi_debug_levels[i].name,
236 acpi_debug_levels[i].value,
237 (acpi_dbg_level & acpi_debug_levels[i].
240 seq_printf(m, "--\ndebug_level = 0x%08X (* = enabled)\n",
247 static int acpi_system_debug_proc_open(struct inode *inode, struct file *file)
249 return single_open(file, acpi_system_debug_proc_show, PDE(inode)->data);
252 static ssize_t acpi_system_debug_proc_write(struct file *file,
253 const char __user * buffer,
254 size_t count, loff_t *pos)
256 char debug_string[12] = { '\0' };
259 if (count > sizeof(debug_string) - 1)
262 if (copy_from_user(debug_string, buffer, count))
265 debug_string[count] = '\0';
267 switch ((unsigned long)PDE(file->f_path.dentry->d_inode)->data) {
269 acpi_dbg_layer = simple_strtoul(debug_string, NULL, 0);
272 acpi_dbg_level = simple_strtoul(debug_string, NULL, 0);
281 static const struct file_operations acpi_system_debug_proc_fops = {
282 .owner = THIS_MODULE,
283 .open = acpi_system_debug_proc_open,
286 .release = single_release,
287 .write = acpi_system_debug_proc_write,
291 int __init acpi_procfs_init(void)
293 #ifdef CONFIG_ACPI_PROCFS
294 struct proc_dir_entry *entry;
298 /* 'debug_layer' [R/W] */
299 name = ACPI_SYSTEM_FILE_DEBUG_LAYER;
300 entry = proc_create_data(name, S_IFREG | S_IRUGO | S_IWUSR,
301 acpi_root_dir, &acpi_system_debug_proc_fops,
306 /* 'debug_level' [R/W] */
307 name = ACPI_SYSTEM_FILE_DEBUG_LEVEL;
308 entry = proc_create_data(name, S_IFREG | S_IRUGO | S_IWUSR,
309 acpi_root_dir, &acpi_system_debug_proc_fops,
318 remove_proc_entry(ACPI_SYSTEM_FILE_DEBUG_LEVEL, acpi_root_dir);
319 remove_proc_entry(ACPI_SYSTEM_FILE_DEBUG_LAYER, acpi_root_dir);
327 int __init acpi_debug_init(void)