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-rw-r--r--drivers/acpi/Kconfig3
-rw-r--r--drivers/acpi/acpica/tbutils.c7
-rw-r--r--drivers/acpi/acpica/uteval.c21
-rw-r--r--drivers/acpi/container.c5
-rw-r--r--drivers/acpi/dock.c14
-rw-r--r--drivers/acpi/ec.c2
-rw-r--r--drivers/acpi/glue.c8
-rw-r--r--drivers/acpi/osl.c54
-rw-r--r--drivers/acpi/pci_link.c2
-rw-r--r--drivers/acpi/processor_idle.c667
-rw-r--r--drivers/acpi/processor_perflib.c105
-rw-r--r--drivers/acpi/sleep.c53
-rw-r--r--drivers/acpi/tables.c7
-rw-r--r--drivers/acpi/video.c16
14 files changed, 138 insertions, 826 deletions
diff --git a/drivers/acpi/Kconfig b/drivers/acpi/Kconfig
index d7f9839ba264..a7799a99f2d9 100644
--- a/drivers/acpi/Kconfig
+++ b/drivers/acpi/Kconfig
@@ -9,6 +9,7 @@ menuconfig ACPI
9 depends on PCI 9 depends on PCI
10 depends on PM 10 depends on PM
11 select PNP 11 select PNP
12 select CPU_IDLE
12 default y 13 default y
13 ---help--- 14 ---help---
14 Advanced Configuration and Power Interface (ACPI) support for 15 Advanced Configuration and Power Interface (ACPI) support for
@@ -287,7 +288,7 @@ config ACPI_CONTAINER
287 support physical cpu/memory hot-plug. 288 support physical cpu/memory hot-plug.
288 289
289 If one selects "m", this driver can be loaded with 290 If one selects "m", this driver can be loaded with
290 "modprobe acpi_container". 291 "modprobe container".
291 292
292config ACPI_HOTPLUG_MEMORY 293config ACPI_HOTPLUG_MEMORY
293 tristate "Memory Hotplug" 294 tristate "Memory Hotplug"
diff --git a/drivers/acpi/acpica/tbutils.c b/drivers/acpi/acpica/tbutils.c
index 9684cc827930..22ce48985720 100644
--- a/drivers/acpi/acpica/tbutils.c
+++ b/drivers/acpi/acpica/tbutils.c
@@ -538,10 +538,9 @@ acpi_tb_parse_root_table(acpi_physical_address rsdp_address, u8 flags)
538 if (ACPI_FAILURE(status)) { 538 if (ACPI_FAILURE(status)) {
539 ACPI_WARNING((AE_INFO, 539 ACPI_WARNING((AE_INFO,
540 "Truncating %u table entries!", 540 "Truncating %u table entries!",
541 (unsigned) 541 (unsigned) (table_count -
542 (acpi_gbl_root_table_list.size - 542 (acpi_gbl_root_table_list.
543 acpi_gbl_root_table_list. 543 count - 2))));
544 count)));
545 break; 544 break;
546 } 545 }
547 } 546 }
diff --git a/drivers/acpi/acpica/uteval.c b/drivers/acpi/acpica/uteval.c
index da9450bc60f7..9c9897dbe907 100644
--- a/drivers/acpi/acpica/uteval.c
+++ b/drivers/acpi/acpica/uteval.c
@@ -116,9 +116,9 @@ acpi_status acpi_ut_osi_implementation(struct acpi_walk_state *walk_state)
116 return_ACPI_STATUS(AE_NO_MEMORY); 116 return_ACPI_STATUS(AE_NO_MEMORY);
117 } 117 }
118 118
119 /* Default return value is SUPPORTED */ 119 /* Default return value is 0, NOT-SUPPORTED */
120 120
121 return_desc->integer.value = ACPI_UINT32_MAX; 121 return_desc->integer.value = 0;
122 walk_state->return_desc = return_desc; 122 walk_state->return_desc = return_desc;
123 123
124 /* Compare input string to static table of supported interfaces */ 124 /* Compare input string to static table of supported interfaces */
@@ -127,10 +127,8 @@ acpi_status acpi_ut_osi_implementation(struct acpi_walk_state *walk_state)
127 if (!ACPI_STRCMP 127 if (!ACPI_STRCMP
128 (string_desc->string.pointer, 128 (string_desc->string.pointer,
129 acpi_interfaces_supported[i])) { 129 acpi_interfaces_supported[i])) {
130 130 return_desc->integer.value = ACPI_UINT32_MAX;
131 /* The interface is supported */ 131 goto done;
132
133 return_ACPI_STATUS(AE_OK);
134 } 132 }
135 } 133 }
136 134
@@ -141,15 +139,14 @@ acpi_status acpi_ut_osi_implementation(struct acpi_walk_state *walk_state)
141 */ 139 */
142 status = acpi_os_validate_interface(string_desc->string.pointer); 140 status = acpi_os_validate_interface(string_desc->string.pointer);
143 if (ACPI_SUCCESS(status)) { 141 if (ACPI_SUCCESS(status)) {
144 142 return_desc->integer.value = ACPI_UINT32_MAX;
145 /* The interface is supported */
146
147 return_ACPI_STATUS(AE_OK);
148 } 143 }
149 144
150 /* The interface is not supported */ 145done:
146 ACPI_DEBUG_PRINT_RAW((ACPI_DB_INFO, "ACPI: BIOS _OSI(%s) %ssupported\n",
147 string_desc->string.pointer,
148 return_desc->integer.value == 0 ? "not-" : ""));
151 149
152 return_desc->integer.value = 0;
153 return_ACPI_STATUS(AE_OK); 150 return_ACPI_STATUS(AE_OK);
154} 151}
155 152
diff --git a/drivers/acpi/container.c b/drivers/acpi/container.c
index 17020c12623c..fe0cdf83641a 100644
--- a/drivers/acpi/container.c
+++ b/drivers/acpi/container.c
@@ -163,7 +163,7 @@ static void container_notify_cb(acpi_handle handle, u32 type, void *context)
163 case ACPI_NOTIFY_BUS_CHECK: 163 case ACPI_NOTIFY_BUS_CHECK:
164 /* Fall through */ 164 /* Fall through */
165 case ACPI_NOTIFY_DEVICE_CHECK: 165 case ACPI_NOTIFY_DEVICE_CHECK:
166 printk("Container driver received %s event\n", 166 printk(KERN_WARNING "Container driver received %s event\n",
167 (type == ACPI_NOTIFY_BUS_CHECK) ? 167 (type == ACPI_NOTIFY_BUS_CHECK) ?
168 "ACPI_NOTIFY_BUS_CHECK" : "ACPI_NOTIFY_DEVICE_CHECK"); 168 "ACPI_NOTIFY_BUS_CHECK" : "ACPI_NOTIFY_DEVICE_CHECK");
169 status = acpi_bus_get_device(handle, &device); 169 status = acpi_bus_get_device(handle, &device);
@@ -174,7 +174,8 @@ static void container_notify_cb(acpi_handle handle, u32 type, void *context)
174 kobject_uevent(&device->dev.kobj, 174 kobject_uevent(&device->dev.kobj,
175 KOBJ_ONLINE); 175 KOBJ_ONLINE);
176 else 176 else
177 printk("Failed to add container\n"); 177 printk(KERN_WARNING
178 "Failed to add container\n");
178 } 179 }
179 } else { 180 } else {
180 if (ACPI_SUCCESS(status)) { 181 if (ACPI_SUCCESS(status)) {
diff --git a/drivers/acpi/dock.c b/drivers/acpi/dock.c
index 5b30b8d91d71..35094f230b1e 100644
--- a/drivers/acpi/dock.c
+++ b/drivers/acpi/dock.c
@@ -855,10 +855,14 @@ fdd_out:
855static ssize_t show_docked(struct device *dev, 855static ssize_t show_docked(struct device *dev,
856 struct device_attribute *attr, char *buf) 856 struct device_attribute *attr, char *buf)
857{ 857{
858 struct acpi_device *tmp;
859
858 struct dock_station *dock_station = *((struct dock_station **) 860 struct dock_station *dock_station = *((struct dock_station **)
859 dev->platform_data); 861 dev->platform_data);
860 return snprintf(buf, PAGE_SIZE, "%d\n", dock_present(dock_station));
861 862
863 if (ACPI_SUCCESS(acpi_bus_get_device(dock_station->handle, &tmp)))
864 return snprintf(buf, PAGE_SIZE, "1\n");
865 return snprintf(buf, PAGE_SIZE, "0\n");
862} 866}
863static DEVICE_ATTR(docked, S_IRUGO, show_docked, NULL); 867static DEVICE_ATTR(docked, S_IRUGO, show_docked, NULL);
864 868
@@ -984,7 +988,7 @@ static int dock_add(acpi_handle handle)
984 988
985 ret = device_create_file(&dock_device->dev, &dev_attr_docked); 989 ret = device_create_file(&dock_device->dev, &dev_attr_docked);
986 if (ret) { 990 if (ret) {
987 printk("Error %d adding sysfs file\n", ret); 991 printk(KERN_ERR "Error %d adding sysfs file\n", ret);
988 platform_device_unregister(dock_device); 992 platform_device_unregister(dock_device);
989 kfree(dock_station); 993 kfree(dock_station);
990 dock_station = NULL; 994 dock_station = NULL;
@@ -992,7 +996,7 @@ static int dock_add(acpi_handle handle)
992 } 996 }
993 ret = device_create_file(&dock_device->dev, &dev_attr_undock); 997 ret = device_create_file(&dock_device->dev, &dev_attr_undock);
994 if (ret) { 998 if (ret) {
995 printk("Error %d adding sysfs file\n", ret); 999 printk(KERN_ERR "Error %d adding sysfs file\n", ret);
996 device_remove_file(&dock_device->dev, &dev_attr_docked); 1000 device_remove_file(&dock_device->dev, &dev_attr_docked);
997 platform_device_unregister(dock_device); 1001 platform_device_unregister(dock_device);
998 kfree(dock_station); 1002 kfree(dock_station);
@@ -1001,7 +1005,7 @@ static int dock_add(acpi_handle handle)
1001 } 1005 }
1002 ret = device_create_file(&dock_device->dev, &dev_attr_uid); 1006 ret = device_create_file(&dock_device->dev, &dev_attr_uid);
1003 if (ret) { 1007 if (ret) {
1004 printk("Error %d adding sysfs file\n", ret); 1008 printk(KERN_ERR "Error %d adding sysfs file\n", ret);
1005 device_remove_file(&dock_device->dev, &dev_attr_docked); 1009 device_remove_file(&dock_device->dev, &dev_attr_docked);
1006 device_remove_file(&dock_device->dev, &dev_attr_undock); 1010 device_remove_file(&dock_device->dev, &dev_attr_undock);
1007 platform_device_unregister(dock_device); 1011 platform_device_unregister(dock_device);
@@ -1011,7 +1015,7 @@ static int dock_add(acpi_handle handle)
1011 } 1015 }
1012 ret = device_create_file(&dock_device->dev, &dev_attr_flags); 1016 ret = device_create_file(&dock_device->dev, &dev_attr_flags);
1013 if (ret) { 1017 if (ret) {
1014 printk("Error %d adding sysfs file\n", ret); 1018 printk(KERN_ERR "Error %d adding sysfs file\n", ret);
1015 device_remove_file(&dock_device->dev, &dev_attr_docked); 1019 device_remove_file(&dock_device->dev, &dev_attr_docked);
1016 device_remove_file(&dock_device->dev, &dev_attr_undock); 1020 device_remove_file(&dock_device->dev, &dev_attr_undock);
1017 device_remove_file(&dock_device->dev, &dev_attr_uid); 1021 device_remove_file(&dock_device->dev, &dev_attr_uid);
diff --git a/drivers/acpi/ec.c b/drivers/acpi/ec.c
index a2b82c90a683..5c2f5d343be6 100644
--- a/drivers/acpi/ec.c
+++ b/drivers/acpi/ec.c
@@ -982,7 +982,7 @@ int __init acpi_ec_ecdt_probe(void)
982 saved_ec = kmalloc(sizeof(struct acpi_ec), GFP_KERNEL); 982 saved_ec = kmalloc(sizeof(struct acpi_ec), GFP_KERNEL);
983 if (!saved_ec) 983 if (!saved_ec)
984 return -ENOMEM; 984 return -ENOMEM;
985 memcpy(&saved_ec, boot_ec, sizeof(saved_ec)); 985 memcpy(saved_ec, boot_ec, sizeof(*saved_ec));
986 /* fall through */ 986 /* fall through */
987 } 987 }
988 /* This workaround is needed only on some broken machines, 988 /* This workaround is needed only on some broken machines,
diff --git a/drivers/acpi/glue.c b/drivers/acpi/glue.c
index adec3d15810a..5479b9f42513 100644
--- a/drivers/acpi/glue.c
+++ b/drivers/acpi/glue.c
@@ -255,12 +255,12 @@ static int acpi_platform_notify(struct device *dev)
255 } 255 }
256 type = acpi_get_bus_type(dev->bus); 256 type = acpi_get_bus_type(dev->bus);
257 if (!type) { 257 if (!type) {
258 DBG("No ACPI bus support for %s\n", dev->bus_id); 258 DBG("No ACPI bus support for %s\n", dev_name(dev));
259 ret = -EINVAL; 259 ret = -EINVAL;
260 goto end; 260 goto end;
261 } 261 }
262 if ((ret = type->find_device(dev, &handle)) != 0) 262 if ((ret = type->find_device(dev, &handle)) != 0)
263 DBG("Can't get handler for %s\n", dev->bus_id); 263 DBG("Can't get handler for %s\n", dev_name(dev));
264 end: 264 end:
265 if (!ret) 265 if (!ret)
266 acpi_bind_one(dev, handle); 266 acpi_bind_one(dev, handle);
@@ -271,10 +271,10 @@ static int acpi_platform_notify(struct device *dev)
271 271
272 acpi_get_name(dev->archdata.acpi_handle, 272 acpi_get_name(dev->archdata.acpi_handle,
273 ACPI_FULL_PATHNAME, &buffer); 273 ACPI_FULL_PATHNAME, &buffer);
274 DBG("Device %s -> %s\n", dev->bus_id, (char *)buffer.pointer); 274 DBG("Device %s -> %s\n", dev_name(dev), (char *)buffer.pointer);
275 kfree(buffer.pointer); 275 kfree(buffer.pointer);
276 } else 276 } else
277 DBG("Device %s -> No ACPI support\n", dev->bus_id); 277 DBG("Device %s -> No ACPI support\n", dev_name(dev));
278#endif 278#endif
279 279
280 return ret; 280 return ret;
diff --git a/drivers/acpi/osl.c b/drivers/acpi/osl.c
index 6729a4992f2b..b3193ec0a2ef 100644
--- a/drivers/acpi/osl.c
+++ b/drivers/acpi/osl.c
@@ -228,10 +228,10 @@ void acpi_os_vprintf(const char *fmt, va_list args)
228 if (acpi_in_debugger) { 228 if (acpi_in_debugger) {
229 kdb_printf("%s", buffer); 229 kdb_printf("%s", buffer);
230 } else { 230 } else {
231 printk("%s", buffer); 231 printk(KERN_CONT "%s", buffer);
232 } 232 }
233#else 233#else
234 printk("%s", buffer); 234 printk(KERN_CONT "%s", buffer);
235#endif 235#endif
236} 236}
237 237
@@ -1317,6 +1317,54 @@ acpi_os_validate_interface (char *interface)
1317 return AE_SUPPORT; 1317 return AE_SUPPORT;
1318} 1318}
1319 1319
1320#ifdef CONFIG_X86
1321
1322struct aml_port_desc {
1323 uint start;
1324 uint end;
1325 char* name;
1326 char warned;
1327};
1328
1329static struct aml_port_desc aml_invalid_port_list[] = {
1330 {0x20, 0x21, "PIC0", 0},
1331 {0xA0, 0xA1, "PIC1", 0},
1332 {0x4D0, 0x4D1, "ELCR", 0}
1333};
1334
1335/*
1336 * valid_aml_io_address()
1337 *
1338 * if valid, return true
1339 * else invalid, warn once, return false
1340 */
1341static bool valid_aml_io_address(uint address, uint length)
1342{
1343 int i;
1344 int entries = sizeof(aml_invalid_port_list) / sizeof(struct aml_port_desc);
1345
1346 for (i = 0; i < entries; ++i) {
1347 if ((address >= aml_invalid_port_list[i].start &&
1348 address <= aml_invalid_port_list[i].end) ||
1349 (address + length >= aml_invalid_port_list[i].start &&
1350 address + length <= aml_invalid_port_list[i].end))
1351 {
1352 if (!aml_invalid_port_list[i].warned)
1353 {
1354 printk(KERN_ERR "ACPI: Denied BIOS AML access"
1355 " to invalid port 0x%x+0x%x (%s)\n",
1356 address, length,
1357 aml_invalid_port_list[i].name);
1358 aml_invalid_port_list[i].warned = 1;
1359 }
1360 return false; /* invalid */
1361 }
1362 }
1363 return true; /* valid */
1364}
1365#else
1366static inline bool valid_aml_io_address(uint address, uint length) { return true; }
1367#endif
1320/****************************************************************************** 1368/******************************************************************************
1321 * 1369 *
1322 * FUNCTION: acpi_os_validate_address 1370 * FUNCTION: acpi_os_validate_address
@@ -1346,6 +1394,8 @@ acpi_os_validate_address (
1346 1394
1347 switch (space_id) { 1395 switch (space_id) {
1348 case ACPI_ADR_SPACE_SYSTEM_IO: 1396 case ACPI_ADR_SPACE_SYSTEM_IO:
1397 if (!valid_aml_io_address(address, length))
1398 return AE_AML_ILLEGAL_ADDRESS;
1349 case ACPI_ADR_SPACE_SYSTEM_MEMORY: 1399 case ACPI_ADR_SPACE_SYSTEM_MEMORY:
1350 /* Only interference checks against SystemIO and SytemMemory 1400 /* Only interference checks against SystemIO and SytemMemory
1351 are needed */ 1401 are needed */
diff --git a/drivers/acpi/pci_link.c b/drivers/acpi/pci_link.c
index 1c6e73c7865e..6c772ca76bd1 100644
--- a/drivers/acpi/pci_link.c
+++ b/drivers/acpi/pci_link.c
@@ -593,7 +593,7 @@ static int acpi_pci_link_allocate(struct acpi_pci_link *link)
593 return -ENODEV; 593 return -ENODEV;
594 } else { 594 } else {
595 acpi_irq_penalty[link->irq.active] += PIRQ_PENALTY_PCI_USING; 595 acpi_irq_penalty[link->irq.active] += PIRQ_PENALTY_PCI_USING;
596 printk(PREFIX "%s [%s] enabled at IRQ %d\n", 596 printk(KERN_WARNING PREFIX "%s [%s] enabled at IRQ %d\n",
597 acpi_device_name(link->device), 597 acpi_device_name(link->device),
598 acpi_device_bid(link->device), link->irq.active); 598 acpi_device_bid(link->device), link->irq.active);
599 } 599 }
diff --git a/drivers/acpi/processor_idle.c b/drivers/acpi/processor_idle.c
index 66a9d8145562..7bc22a471fe3 100644
--- a/drivers/acpi/processor_idle.c
+++ b/drivers/acpi/processor_idle.c
@@ -66,43 +66,17 @@ ACPI_MODULE_NAME("processor_idle");
66#define ACPI_PROCESSOR_FILE_POWER "power" 66#define ACPI_PROCESSOR_FILE_POWER "power"
67#define US_TO_PM_TIMER_TICKS(t) ((t * (PM_TIMER_FREQUENCY/1000)) / 1000) 67#define US_TO_PM_TIMER_TICKS(t) ((t * (PM_TIMER_FREQUENCY/1000)) / 1000)
68#define PM_TIMER_TICK_NS (1000000000ULL/PM_TIMER_FREQUENCY) 68#define PM_TIMER_TICK_NS (1000000000ULL/PM_TIMER_FREQUENCY)
69#ifndef CONFIG_CPU_IDLE
70#define C2_OVERHEAD 4 /* 1us (3.579 ticks per us) */
71#define C3_OVERHEAD 4 /* 1us (3.579 ticks per us) */
72static void (*pm_idle_save) (void) __read_mostly;
73#else
74#define C2_OVERHEAD 1 /* 1us */ 69#define C2_OVERHEAD 1 /* 1us */
75#define C3_OVERHEAD 1 /* 1us */ 70#define C3_OVERHEAD 1 /* 1us */
76#endif
77#define PM_TIMER_TICKS_TO_US(p) (((p) * 1000)/(PM_TIMER_FREQUENCY/1000)) 71#define PM_TIMER_TICKS_TO_US(p) (((p) * 1000)/(PM_TIMER_FREQUENCY/1000))
78 72
79static unsigned int max_cstate __read_mostly = ACPI_PROCESSOR_MAX_POWER; 73static unsigned int max_cstate __read_mostly = ACPI_PROCESSOR_MAX_POWER;
80#ifdef CONFIG_CPU_IDLE
81module_param(max_cstate, uint, 0000); 74module_param(max_cstate, uint, 0000);
82#else
83module_param(max_cstate, uint, 0644);
84#endif
85static unsigned int nocst __read_mostly; 75static unsigned int nocst __read_mostly;
86module_param(nocst, uint, 0000); 76module_param(nocst, uint, 0000);
87 77
88#ifndef CONFIG_CPU_IDLE
89/*
90 * bm_history -- bit-mask with a bit per jiffy of bus-master activity
91 * 1000 HZ: 0xFFFFFFFF: 32 jiffies = 32ms
92 * 800 HZ: 0xFFFFFFFF: 32 jiffies = 40ms
93 * 100 HZ: 0x0000000F: 4 jiffies = 40ms
94 * reduce history for more aggressive entry into C3
95 */
96static unsigned int bm_history __read_mostly =
97 (HZ >= 800 ? 0xFFFFFFFF : ((1U << (HZ / 25)) - 1));
98module_param(bm_history, uint, 0644);
99
100static int acpi_processor_set_power_policy(struct acpi_processor *pr);
101
102#else /* CONFIG_CPU_IDLE */
103static unsigned int latency_factor __read_mostly = 2; 78static unsigned int latency_factor __read_mostly = 2;
104module_param(latency_factor, uint, 0644); 79module_param(latency_factor, uint, 0644);
105#endif
106 80
107/* 81/*
108 * IBM ThinkPad R40e crashes mysteriously when going into C2 or C3. 82 * IBM ThinkPad R40e crashes mysteriously when going into C2 or C3.
@@ -224,71 +198,6 @@ static void acpi_safe_halt(void)
224 current_thread_info()->status |= TS_POLLING; 198 current_thread_info()->status |= TS_POLLING;
225} 199}
226 200
227#ifndef CONFIG_CPU_IDLE
228
229static void
230acpi_processor_power_activate(struct acpi_processor *pr,
231 struct acpi_processor_cx *new)
232{
233 struct acpi_processor_cx *old;
234
235 if (!pr || !new)
236 return;
237
238 old = pr->power.state;
239
240 if (old)
241 old->promotion.count = 0;
242 new->demotion.count = 0;
243
244 /* Cleanup from old state. */
245 if (old) {
246 switch (old->type) {
247 case ACPI_STATE_C3:
248 /* Disable bus master reload */
249 if (new->type != ACPI_STATE_C3 && pr->flags.bm_check)
250 acpi_set_register(ACPI_BITREG_BUS_MASTER_RLD, 0);
251 break;
252 }
253 }
254
255 /* Prepare to use new state. */
256 switch (new->type) {
257 case ACPI_STATE_C3:
258 /* Enable bus master reload */
259 if (old->type != ACPI_STATE_C3 && pr->flags.bm_check)
260 acpi_set_register(ACPI_BITREG_BUS_MASTER_RLD, 1);
261 break;
262 }
263
264 pr->power.state = new;
265
266 return;
267}
268
269static atomic_t c3_cpu_count;
270
271/* Common C-state entry for C2, C3, .. */
272static void acpi_cstate_enter(struct acpi_processor_cx *cstate)
273{
274 /* Don't trace irqs off for idle */
275 stop_critical_timings();
276 if (cstate->entry_method == ACPI_CSTATE_FFH) {
277 /* Call into architectural FFH based C-state */
278 acpi_processor_ffh_cstate_enter(cstate);
279 } else {
280 int unused;
281 /* IO port based C-state */
282 inb(cstate->address);
283 /* Dummy wait op - must do something useless after P_LVL2 read
284 because chipsets cannot guarantee that STPCLK# signal
285 gets asserted in time to freeze execution properly. */
286 unused = inl(acpi_gbl_FADT.xpm_timer_block.address);
287 }
288 start_critical_timings();
289}
290#endif /* !CONFIG_CPU_IDLE */
291
292#ifdef ARCH_APICTIMER_STOPS_ON_C3 201#ifdef ARCH_APICTIMER_STOPS_ON_C3
293 202
294/* 203/*
@@ -390,421 +299,6 @@ static int tsc_halts_in_c(int state)
390} 299}
391#endif 300#endif
392 301
393#ifndef CONFIG_CPU_IDLE
394static void acpi_processor_idle(void)
395{
396 struct acpi_processor *pr = NULL;
397 struct acpi_processor_cx *cx = NULL;
398 struct acpi_processor_cx *next_state = NULL;
399 int sleep_ticks = 0;
400 u32 t1, t2 = 0;
401
402 /*
403 * Interrupts must be disabled during bus mastering calculations and
404 * for C2/C3 transitions.
405 */
406 local_irq_disable();
407
408 pr = __get_cpu_var(processors);
409 if (!pr) {
410 local_irq_enable();
411 return;
412 }
413
414 /*
415 * Check whether we truly need to go idle, or should
416 * reschedule:
417 */
418 if (unlikely(need_resched())) {
419 local_irq_enable();
420 return;
421 }
422
423 cx = pr->power.state;
424 if (!cx || acpi_idle_suspend) {
425 if (pm_idle_save) {
426 pm_idle_save(); /* enables IRQs */
427 } else {
428 acpi_safe_halt();
429 local_irq_enable();
430 }
431
432 return;
433 }
434
435 /*
436 * Check BM Activity
437 * -----------------
438 * Check for bus mastering activity (if required), record, and check
439 * for demotion.
440 */
441 if (pr->flags.bm_check) {
442 u32 bm_status = 0;
443 unsigned long diff = jiffies - pr->power.bm_check_timestamp;
444
445 if (diff > 31)
446 diff = 31;
447
448 pr->power.bm_activity <<= diff;
449
450 acpi_get_register(ACPI_BITREG_BUS_MASTER_STATUS, &bm_status);
451 if (bm_status) {
452 pr->power.bm_activity |= 0x1;
453 acpi_set_register(ACPI_BITREG_BUS_MASTER_STATUS, 1);
454 }
455 /*
456 * PIIX4 Erratum #18: Note that BM_STS doesn't always reflect
457 * the true state of bus mastering activity; forcing us to
458 * manually check the BMIDEA bit of each IDE channel.
459 */
460 else if (errata.piix4.bmisx) {
461 if ((inb_p(errata.piix4.bmisx + 0x02) & 0x01)
462 || (inb_p(errata.piix4.bmisx + 0x0A) & 0x01))
463 pr->power.bm_activity |= 0x1;
464 }
465
466 pr->power.bm_check_timestamp = jiffies;
467
468 /*
469 * If bus mastering is or was active this jiffy, demote
470 * to avoid a faulty transition. Note that the processor
471 * won't enter a low-power state during this call (to this
472 * function) but should upon the next.
473 *
474 * TBD: A better policy might be to fallback to the demotion
475 * state (use it for this quantum only) istead of
476 * demoting -- and rely on duration as our sole demotion
477 * qualification. This may, however, introduce DMA
478 * issues (e.g. floppy DMA transfer overrun/underrun).
479 */
480 if ((pr->power.bm_activity & 0x1) &&
481 cx->demotion.threshold.bm) {
482 local_irq_enable();
483 next_state = cx->demotion.state;
484 goto end;
485 }
486 }
487
488#ifdef CONFIG_HOTPLUG_CPU
489 /*
490 * Check for P_LVL2_UP flag before entering C2 and above on
491 * an SMP system. We do it here instead of doing it at _CST/P_LVL
492 * detection phase, to work cleanly with logical CPU hotplug.
493 */
494 if ((cx->type != ACPI_STATE_C1) && (num_online_cpus() > 1) &&
495 !pr->flags.has_cst && !(acpi_gbl_FADT.flags & ACPI_FADT_C2_MP_SUPPORTED))
496 cx = &pr->power.states[ACPI_STATE_C1];
497#endif
498
499 /*
500 * Sleep:
501 * ------
502 * Invoke the current Cx state to put the processor to sleep.
503 */
504 if (cx->type == ACPI_STATE_C2 || cx->type == ACPI_STATE_C3) {
505 current_thread_info()->status &= ~TS_POLLING;
506 /*
507 * TS_POLLING-cleared state must be visible before we
508 * test NEED_RESCHED:
509 */
510 smp_mb();
511 if (need_resched()) {
512 current_thread_info()->status |= TS_POLLING;
513 local_irq_enable();
514 return;
515 }
516 }
517
518 switch (cx->type) {
519
520 case ACPI_STATE_C1:
521 /*
522 * Invoke C1.
523 * Use the appropriate idle routine, the one that would
524 * be used without acpi C-states.
525 */
526 if (pm_idle_save) {
527 pm_idle_save(); /* enables IRQs */
528 } else {
529 acpi_safe_halt();
530 local_irq_enable();
531 }
532
533 /*
534 * TBD: Can't get time duration while in C1, as resumes
535 * go to an ISR rather than here. Need to instrument
536 * base interrupt handler.
537 *
538 * Note: the TSC better not stop in C1, sched_clock() will
539 * skew otherwise.
540 */
541 sleep_ticks = 0xFFFFFFFF;
542
543 break;
544
545 case ACPI_STATE_C2:
546 /* Get start time (ticks) */
547 t1 = inl(acpi_gbl_FADT.xpm_timer_block.address);
548 /* Tell the scheduler that we are going deep-idle: */
549 sched_clock_idle_sleep_event();
550 /* Invoke C2 */
551 acpi_state_timer_broadcast(pr, cx, 1);
552 acpi_cstate_enter(cx);
553 /* Get end time (ticks) */
554 t2 = inl(acpi_gbl_FADT.xpm_timer_block.address);
555
556#if defined (CONFIG_GENERIC_TIME) && defined (CONFIG_X86)
557 /* TSC halts in C2, so notify users */
558 if (tsc_halts_in_c(ACPI_STATE_C2))
559 mark_tsc_unstable("possible TSC halt in C2");
560#endif
561 /* Compute time (ticks) that we were actually asleep */
562 sleep_ticks = ticks_elapsed(t1, t2);
563
564 /* Tell the scheduler how much we idled: */
565 sched_clock_idle_wakeup_event(sleep_ticks*PM_TIMER_TICK_NS);
566
567 /* Re-enable interrupts */
568 local_irq_enable();
569 /* Do not account our idle-switching overhead: */
570 sleep_ticks -= cx->latency_ticks + C2_OVERHEAD;
571
572 current_thread_info()->status |= TS_POLLING;
573 acpi_state_timer_broadcast(pr, cx, 0);
574 break;
575
576 case ACPI_STATE_C3:
577 acpi_unlazy_tlb(smp_processor_id());
578 /*
579 * Must be done before busmaster disable as we might
580 * need to access HPET !
581 */
582 acpi_state_timer_broadcast(pr, cx, 1);
583 /*
584 * disable bus master
585 * bm_check implies we need ARB_DIS
586 * !bm_check implies we need cache flush
587 * bm_control implies whether we can do ARB_DIS
588 *
589 * That leaves a case where bm_check is set and bm_control is
590 * not set. In that case we cannot do much, we enter C3
591 * without doing anything.
592 */
593 if (pr->flags.bm_check && pr->flags.bm_control) {
594 if (atomic_inc_return(&c3_cpu_count) ==
595 num_online_cpus()) {
596 /*
597 * All CPUs are trying to go to C3
598 * Disable bus master arbitration
599 */
600 acpi_set_register(ACPI_BITREG_ARB_DISABLE, 1);
601 }
602 } else if (!pr->flags.bm_check) {
603 /* SMP with no shared cache... Invalidate cache */
604 ACPI_FLUSH_CPU_CACHE();
605 }
606
607 /* Get start time (ticks) */
608 t1 = inl(acpi_gbl_FADT.xpm_timer_block.address);
609 /* Invoke C3 */
610 /* Tell the scheduler that we are going deep-idle: */
611 sched_clock_idle_sleep_event();
612 acpi_cstate_enter(cx);
613 /* Get end time (ticks) */
614 t2 = inl(acpi_gbl_FADT.xpm_timer_block.address);
615 if (pr->flags.bm_check && pr->flags.bm_control) {
616 /* Enable bus master arbitration */
617 atomic_dec(&c3_cpu_count);
618 acpi_set_register(ACPI_BITREG_ARB_DISABLE, 0);
619 }
620
621#if defined (CONFIG_GENERIC_TIME) && defined (CONFIG_X86)
622 /* TSC halts in C3, so notify users */
623 if (tsc_halts_in_c(ACPI_STATE_C3))
624 mark_tsc_unstable("TSC halts in C3");
625#endif
626 /* Compute time (ticks) that we were actually asleep */
627 sleep_ticks = ticks_elapsed(t1, t2);
628 /* Tell the scheduler how much we idled: */
629 sched_clock_idle_wakeup_event(sleep_ticks*PM_TIMER_TICK_NS);
630
631 /* Re-enable interrupts */
632 local_irq_enable();
633 /* Do not account our idle-switching overhead: */
634 sleep_ticks -= cx->latency_ticks + C3_OVERHEAD;
635
636 current_thread_info()->status |= TS_POLLING;
637 acpi_state_timer_broadcast(pr, cx, 0);
638 break;
639
640 default:
641 local_irq_enable();
642 return;
643 }
644 cx->usage++;
645 if ((cx->type != ACPI_STATE_C1) && (sleep_ticks > 0))
646 cx->time += sleep_ticks;
647
648 next_state = pr->power.state;
649
650#ifdef CONFIG_HOTPLUG_CPU
651 /* Don't do promotion/demotion */
652 if ((cx->type == ACPI_STATE_C1) && (num_online_cpus() > 1) &&
653 !pr->flags.has_cst && !(acpi_gbl_FADT.flags & ACPI_FADT_C2_MP_SUPPORTED)) {
654 next_state = cx;
655 goto end;
656 }
657#endif
658
659 /*
660 * Promotion?
661 * ----------
662 * Track the number of longs (time asleep is greater than threshold)
663 * and promote when the count threshold is reached. Note that bus
664 * mastering activity may prevent promotions.
665 * Do not promote above max_cstate.
666 */
667 if (cx->promotion.state &&
668 ((cx->promotion.state - pr->power.states) <= max_cstate)) {
669 if (sleep_ticks > cx->promotion.threshold.ticks &&
670 cx->promotion.state->latency <=
671 pm_qos_requirement(PM_QOS_CPU_DMA_LATENCY)) {
672 cx->promotion.count++;
673 cx->demotion.count = 0;
674 if (cx->promotion.count >=
675 cx->promotion.threshold.count) {
676 if (pr->flags.bm_check) {
677 if (!
678 (pr->power.bm_activity & cx->
679 promotion.threshold.bm)) {
680 next_state =
681 cx->promotion.state;
682 goto end;
683 }
684 } else {
685 next_state = cx->promotion.state;
686 goto end;
687 }
688 }
689 }
690 }
691
692 /*
693 * Demotion?
694 * ---------
695 * Track the number of shorts (time asleep is less than time threshold)
696 * and demote when the usage threshold is reached.
697 */
698 if (cx->demotion.state) {
699 if (sleep_ticks < cx->demotion.threshold.ticks) {
700 cx->demotion.count++;
701 cx->promotion.count = 0;
702 if (cx->demotion.count >= cx->demotion.threshold.count) {
703 next_state = cx->demotion.state;
704 goto end;
705 }
706 }
707 }
708
709 end:
710 /*
711 * Demote if current state exceeds max_cstate
712 * or if the latency of the current state is unacceptable
713 */
714 if ((pr->power.state - pr->power.states) > max_cstate ||
715 pr->power.state->latency >
716 pm_qos_requirement(PM_QOS_CPU_DMA_LATENCY)) {
717 if (cx->demotion.state)
718 next_state = cx->demotion.state;
719 }
720
721 /*
722 * New Cx State?
723 * -------------
724 * If we're going to start using a new Cx state we must clean up
725 * from the previous and prepare to use the new.
726 */
727 if (next_state != pr->power.state)
728 acpi_processor_power_activate(pr, next_state);
729}
730
731static int acpi_processor_set_power_policy(struct acpi_processor *pr)
732{
733 unsigned int i;
734 unsigned int state_is_set = 0;
735 struct acpi_processor_cx *lower = NULL;
736 struct acpi_processor_cx *higher = NULL;
737 struct acpi_processor_cx *cx;
738
739
740 if (!pr)
741 return -EINVAL;
742
743 /*
744 * This function sets the default Cx state policy (OS idle handler).
745 * Our scheme is to promote quickly to C2 but more conservatively
746 * to C3. We're favoring C2 for its characteristics of low latency
747 * (quick response), good power savings, and ability to allow bus
748 * mastering activity. Note that the Cx state policy is completely
749 * customizable and can be altered dynamically.
750 */
751
752 /* startup state */
753 for (i = 1; i < ACPI_PROCESSOR_MAX_POWER; i++) {
754 cx = &pr->power.states[i];
755 if (!cx->valid)
756 continue;
757
758 if (!state_is_set)
759 pr->power.state = cx;
760 state_is_set++;
761 break;
762 }
763
764 if (!state_is_set)
765 return -ENODEV;
766
767 /* demotion */
768 for (i = 1; i < ACPI_PROCESSOR_MAX_POWER; i++) {
769 cx = &pr->power.states[i];
770 if (!cx->valid)
771 continue;
772
773 if (lower) {
774 cx->demotion.state = lower;
775 cx->demotion.threshold.ticks = cx->latency_ticks;
776 cx->demotion.threshold.count = 1;
777 if (cx->type == ACPI_STATE_C3)
778 cx->demotion.threshold.bm = bm_history;
779 }
780
781 lower = cx;
782 }
783
784 /* promotion */
785 for (i = (ACPI_PROCESSOR_MAX_POWER - 1); i > 0; i--) {
786 cx = &pr->power.states[i];
787 if (!cx->valid)
788 continue;
789
790 if (higher) {
791 cx->promotion.state = higher;
792 cx->promotion.threshold.ticks = cx->latency_ticks;
793 if (cx->type >= ACPI_STATE_C2)
794 cx->promotion.threshold.count = 4;
795 else
796 cx->promotion.threshold.count = 10;
797 if (higher->type == ACPI_STATE_C3)
798 cx->promotion.threshold.bm = bm_history;
799 }
800
801 higher = cx;
802 }
803
804 return 0;
805}
806#endif /* !CONFIG_CPU_IDLE */
807
808static int acpi_processor_get_power_info_fadt(struct acpi_processor *pr) 302static int acpi_processor_get_power_info_fadt(struct acpi_processor *pr)
809{ 303{
810 304
@@ -1047,11 +541,7 @@ static void acpi_processor_power_verify_c2(struct acpi_processor_cx *cx)
1047 */ 541 */
1048 cx->valid = 1; 542 cx->valid = 1;
1049 543
1050#ifndef CONFIG_CPU_IDLE
1051 cx->latency_ticks = US_TO_PM_TIMER_TICKS(cx->latency);
1052#else
1053 cx->latency_ticks = cx->latency; 544 cx->latency_ticks = cx->latency;
1054#endif
1055 545
1056 return; 546 return;
1057} 547}
@@ -1121,7 +611,6 @@ static void acpi_processor_power_verify_c3(struct acpi_processor *pr,
1121 " for C3 to be enabled on SMP systems\n")); 611 " for C3 to be enabled on SMP systems\n"));
1122 return; 612 return;
1123 } 613 }
1124 acpi_set_register(ACPI_BITREG_BUS_MASTER_RLD, 0);
1125 } 614 }
1126 615
1127 /* 616 /*
@@ -1132,11 +621,16 @@ static void acpi_processor_power_verify_c3(struct acpi_processor *pr,
1132 */ 621 */
1133 cx->valid = 1; 622 cx->valid = 1;
1134 623
1135#ifndef CONFIG_CPU_IDLE
1136 cx->latency_ticks = US_TO_PM_TIMER_TICKS(cx->latency);
1137#else
1138 cx->latency_ticks = cx->latency; 624 cx->latency_ticks = cx->latency;
1139#endif 625 /*
626 * On older chipsets, BM_RLD needs to be set
627 * in order for Bus Master activity to wake the
628 * system from C3. Newer chipsets handle DMA
629 * during C3 automatically and BM_RLD is a NOP.
630 * In either case, the proper way to
631 * handle BM_RLD is to set it and leave it set.
632 */
633 acpi_set_register(ACPI_BITREG_BUS_MASTER_RLD, 1);
1140 634
1141 return; 635 return;
1142} 636}
@@ -1201,20 +695,6 @@ static int acpi_processor_get_power_info(struct acpi_processor *pr)
1201 695
1202 pr->power.count = acpi_processor_power_verify(pr); 696 pr->power.count = acpi_processor_power_verify(pr);
1203 697
1204#ifndef CONFIG_CPU_IDLE
1205 /*
1206 * Set Default Policy
1207 * ------------------
1208 * Now that we know which states are supported, set the default
1209 * policy. Note that this policy can be changed dynamically
1210 * (e.g. encourage deeper sleeps to conserve battery life when
1211 * not on AC).
1212 */
1213 result = acpi_processor_set_power_policy(pr);
1214 if (result)
1215 return result;
1216#endif
1217
1218 /* 698 /*
1219 * if one state of type C2 or C3 is available, mark this 699 * if one state of type C2 or C3 is available, mark this
1220 * CPU as being "idle manageable" 700 * CPU as being "idle manageable"
@@ -1312,69 +792,6 @@ static const struct file_operations acpi_processor_power_fops = {
1312 .release = single_release, 792 .release = single_release,
1313}; 793};
1314 794
1315#ifndef CONFIG_CPU_IDLE
1316
1317int acpi_processor_cst_has_changed(struct acpi_processor *pr)
1318{
1319 int result = 0;
1320
1321 if (boot_option_idle_override)
1322 return 0;
1323
1324 if (!pr)
1325 return -EINVAL;
1326
1327 if (nocst) {
1328 return -ENODEV;
1329 }
1330
1331 if (!pr->flags.power_setup_done)
1332 return -ENODEV;
1333
1334 /*
1335 * Fall back to the default idle loop, when pm_idle_save had
1336 * been initialized.
1337 */
1338 if (pm_idle_save) {
1339 pm_idle = pm_idle_save;
1340 /* Relies on interrupts forcing exit from idle. */
1341 synchronize_sched();
1342 }
1343
1344 pr->flags.power = 0;
1345 result = acpi_processor_get_power_info(pr);
1346 if ((pr->flags.power == 1) && (pr->flags.power_setup_done))
1347 pm_idle = acpi_processor_idle;
1348
1349 return result;
1350}
1351
1352#ifdef CONFIG_SMP
1353static void smp_callback(void *v)
1354{
1355 /* we already woke the CPU up, nothing more to do */
1356}
1357
1358/*
1359 * This function gets called when a part of the kernel has a new latency
1360 * requirement. This means we need to get all processors out of their C-state,
1361 * and then recalculate a new suitable C-state. Just do a cross-cpu IPI; that
1362 * wakes them all right up.
1363 */
1364static int acpi_processor_latency_notify(struct notifier_block *b,
1365 unsigned long l, void *v)
1366{
1367 smp_call_function(smp_callback, NULL, 1);
1368 return NOTIFY_OK;
1369}
1370
1371static struct notifier_block acpi_processor_latency_notifier = {
1372 .notifier_call = acpi_processor_latency_notify,
1373};
1374
1375#endif
1376
1377#else /* CONFIG_CPU_IDLE */
1378 795
1379/** 796/**
1380 * acpi_idle_bm_check - checks if bus master activity was detected 797 * acpi_idle_bm_check - checks if bus master activity was detected
@@ -1383,7 +800,7 @@ static int acpi_idle_bm_check(void)
1383{ 800{
1384 u32 bm_status = 0; 801 u32 bm_status = 0;
1385 802
1386 acpi_get_register(ACPI_BITREG_BUS_MASTER_STATUS, &bm_status); 803 acpi_get_register_unlocked(ACPI_BITREG_BUS_MASTER_STATUS, &bm_status);
1387 if (bm_status) 804 if (bm_status)
1388 acpi_set_register(ACPI_BITREG_BUS_MASTER_STATUS, 1); 805 acpi_set_register(ACPI_BITREG_BUS_MASTER_STATUS, 1);
1389 /* 806 /*
@@ -1400,25 +817,6 @@ static int acpi_idle_bm_check(void)
1400} 817}
1401 818
1402/** 819/**
1403 * acpi_idle_update_bm_rld - updates the BM_RLD bit depending on target state
1404 * @pr: the processor
1405 * @target: the new target state
1406 */
1407static inline void acpi_idle_update_bm_rld(struct acpi_processor *pr,
1408 struct acpi_processor_cx *target)
1409{
1410 if (pr->flags.bm_rld_set && target->type != ACPI_STATE_C3) {
1411 acpi_set_register(ACPI_BITREG_BUS_MASTER_RLD, 0);
1412 pr->flags.bm_rld_set = 0;
1413 }
1414
1415 if (!pr->flags.bm_rld_set && target->type == ACPI_STATE_C3) {
1416 acpi_set_register(ACPI_BITREG_BUS_MASTER_RLD, 1);
1417 pr->flags.bm_rld_set = 1;
1418 }
1419}
1420
1421/**
1422 * acpi_idle_do_entry - a helper function that does C2 and C3 type entry 820 * acpi_idle_do_entry - a helper function that does C2 and C3 type entry
1423 * @cx: cstate data 821 * @cx: cstate data
1424 * 822 *
@@ -1473,9 +871,6 @@ static int acpi_idle_enter_c1(struct cpuidle_device *dev,
1473 return 0; 871 return 0;
1474 } 872 }
1475 873
1476 if (pr->flags.bm_check)
1477 acpi_idle_update_bm_rld(pr, cx);
1478
1479 t1 = inl(acpi_gbl_FADT.xpm_timer_block.address); 874 t1 = inl(acpi_gbl_FADT.xpm_timer_block.address);
1480 acpi_idle_do_entry(cx); 875 acpi_idle_do_entry(cx);
1481 t2 = inl(acpi_gbl_FADT.xpm_timer_block.address); 876 t2 = inl(acpi_gbl_FADT.xpm_timer_block.address);
@@ -1527,9 +922,6 @@ static int acpi_idle_enter_simple(struct cpuidle_device *dev,
1527 */ 922 */
1528 acpi_state_timer_broadcast(pr, cx, 1); 923 acpi_state_timer_broadcast(pr, cx, 1);
1529 924
1530 if (pr->flags.bm_check)
1531 acpi_idle_update_bm_rld(pr, cx);
1532
1533 if (cx->type == ACPI_STATE_C3) 925 if (cx->type == ACPI_STATE_C3)
1534 ACPI_FLUSH_CPU_CACHE(); 926 ACPI_FLUSH_CPU_CACHE();
1535 927
@@ -1621,8 +1013,6 @@ static int acpi_idle_enter_bm(struct cpuidle_device *dev,
1621 */ 1013 */
1622 acpi_state_timer_broadcast(pr, cx, 1); 1014 acpi_state_timer_broadcast(pr, cx, 1);
1623 1015
1624 acpi_idle_update_bm_rld(pr, cx);
1625
1626 /* 1016 /*
1627 * disable bus master 1017 * disable bus master
1628 * bm_check implies we need ARB_DIS 1018 * bm_check implies we need ARB_DIS
@@ -1795,8 +1185,6 @@ int acpi_processor_cst_has_changed(struct acpi_processor *pr)
1795 return ret; 1185 return ret;
1796} 1186}
1797 1187
1798#endif /* CONFIG_CPU_IDLE */
1799
1800int __cpuinit acpi_processor_power_init(struct acpi_processor *pr, 1188int __cpuinit acpi_processor_power_init(struct acpi_processor *pr,
1801 struct acpi_device *device) 1189 struct acpi_device *device)
1802{ 1190{
@@ -1825,10 +1213,6 @@ int __cpuinit acpi_processor_power_init(struct acpi_processor *pr,
1825 "ACPI: processor limited to max C-state %d\n", 1213 "ACPI: processor limited to max C-state %d\n",
1826 max_cstate); 1214 max_cstate);
1827 first_run++; 1215 first_run++;
1828#if !defined(CONFIG_CPU_IDLE) && defined(CONFIG_SMP)
1829 pm_qos_add_notifier(PM_QOS_CPU_DMA_LATENCY,
1830 &acpi_processor_latency_notifier);
1831#endif
1832 } 1216 }
1833 1217
1834 if (!pr) 1218 if (!pr)
@@ -1852,11 +1236,9 @@ int __cpuinit acpi_processor_power_init(struct acpi_processor *pr,
1852 * platforms that only support C1. 1236 * platforms that only support C1.
1853 */ 1237 */
1854 if (pr->flags.power) { 1238 if (pr->flags.power) {
1855#ifdef CONFIG_CPU_IDLE
1856 acpi_processor_setup_cpuidle(pr); 1239 acpi_processor_setup_cpuidle(pr);
1857 if (cpuidle_register_device(&pr->power.dev)) 1240 if (cpuidle_register_device(&pr->power.dev))
1858 return -EIO; 1241 return -EIO;
1859#endif
1860 1242
1861 printk(KERN_INFO PREFIX "CPU%d (power states:", pr->id); 1243 printk(KERN_INFO PREFIX "CPU%d (power states:", pr->id);
1862 for (i = 1; i <= pr->power.count; i++) 1244 for (i = 1; i <= pr->power.count; i++)
@@ -1864,13 +1246,6 @@ int __cpuinit acpi_processor_power_init(struct acpi_processor *pr,
1864 printk(" C%d[C%d]", i, 1246 printk(" C%d[C%d]", i,
1865 pr->power.states[i].type); 1247 pr->power.states[i].type);
1866 printk(")\n"); 1248 printk(")\n");
1867
1868#ifndef CONFIG_CPU_IDLE
1869 if (pr->id == 0) {
1870 pm_idle_save = pm_idle;
1871 pm_idle = acpi_processor_idle;
1872 }
1873#endif
1874 } 1249 }
1875 1250
1876 /* 'power' [R] */ 1251 /* 'power' [R] */
@@ -1889,34 +1264,12 @@ int acpi_processor_power_exit(struct acpi_processor *pr,
1889 if (boot_option_idle_override) 1264 if (boot_option_idle_override)
1890 return 0; 1265 return 0;
1891 1266
1892#ifdef CONFIG_CPU_IDLE
1893 cpuidle_unregister_device(&pr->power.dev); 1267 cpuidle_unregister_device(&pr->power.dev);
1894#endif
1895 pr->flags.power_setup_done = 0; 1268 pr->flags.power_setup_done = 0;
1896 1269
1897 if (acpi_device_dir(device)) 1270 if (acpi_device_dir(device))
1898 remove_proc_entry(ACPI_PROCESSOR_FILE_POWER, 1271 remove_proc_entry(ACPI_PROCESSOR_FILE_POWER,
1899 acpi_device_dir(device)); 1272 acpi_device_dir(device));
1900 1273
1901#ifndef CONFIG_CPU_IDLE
1902
1903 /* Unregister the idle handler when processor #0 is removed. */
1904 if (pr->id == 0) {
1905 if (pm_idle_save)
1906 pm_idle = pm_idle_save;
1907
1908 /*
1909 * We are about to unload the current idle thread pm callback
1910 * (pm_idle), Wait for all processors to update cached/local
1911 * copies of pm_idle before proceeding.
1912 */
1913 cpu_idle_wait();
1914#ifdef CONFIG_SMP
1915 pm_qos_remove_notifier(PM_QOS_CPU_DMA_LATENCY,
1916 &acpi_processor_latency_notifier);
1917#endif
1918 }
1919#endif
1920
1921 return 0; 1274 return 0;
1922} 1275}
diff --git a/drivers/acpi/processor_perflib.c b/drivers/acpi/processor_perflib.c
index 846e227592d4..9cc769b587ff 100644
--- a/drivers/acpi/processor_perflib.c
+++ b/drivers/acpi/processor_perflib.c
@@ -31,14 +31,6 @@
31#include <linux/init.h> 31#include <linux/init.h>
32#include <linux/cpufreq.h> 32#include <linux/cpufreq.h>
33 33
34#ifdef CONFIG_X86_ACPI_CPUFREQ_PROC_INTF
35#include <linux/proc_fs.h>
36#include <linux/seq_file.h>
37#include <linux/mutex.h>
38
39#include <asm/uaccess.h>
40#endif
41
42#ifdef CONFIG_X86 34#ifdef CONFIG_X86
43#include <asm/cpufeature.h> 35#include <asm/cpufeature.h>
44#endif 36#endif
@@ -434,96 +426,6 @@ int acpi_processor_notify_smm(struct module *calling_module)
434 426
435EXPORT_SYMBOL(acpi_processor_notify_smm); 427EXPORT_SYMBOL(acpi_processor_notify_smm);
436 428
437#ifdef CONFIG_X86_ACPI_CPUFREQ_PROC_INTF
438/* /proc/acpi/processor/../performance interface (DEPRECATED) */
439
440static int acpi_processor_perf_open_fs(struct inode *inode, struct file *file);
441static struct file_operations acpi_processor_perf_fops = {
442 .owner = THIS_MODULE,
443 .open = acpi_processor_perf_open_fs,
444 .read = seq_read,
445 .llseek = seq_lseek,
446 .release = single_release,
447};
448
449static int acpi_processor_perf_seq_show(struct seq_file *seq, void *offset)
450{
451 struct acpi_processor *pr = seq->private;
452 int i;
453
454
455 if (!pr)
456 goto end;
457
458 if (!pr->performance) {
459 seq_puts(seq, "<not supported>\n");
460 goto end;
461 }
462
463 seq_printf(seq, "state count: %d\n"
464 "active state: P%d\n",
465 pr->performance->state_count, pr->performance->state);
466
467 seq_puts(seq, "states:\n");
468 for (i = 0; i < pr->performance->state_count; i++)
469 seq_printf(seq,
470 " %cP%d: %d MHz, %d mW, %d uS\n",
471 (i == pr->performance->state ? '*' : ' '), i,
472 (u32) pr->performance->states[i].core_frequency,
473 (u32) pr->performance->states[i].power,
474 (u32) pr->performance->states[i].transition_latency);
475
476 end:
477 return 0;
478}
479
480static int acpi_processor_perf_open_fs(struct inode *inode, struct file *file)
481{
482 return single_open(file, acpi_processor_perf_seq_show,
483 PDE(inode)->data);
484}
485
486static void acpi_cpufreq_add_file(struct acpi_processor *pr)
487{
488 struct acpi_device *device = NULL;
489
490
491 if (acpi_bus_get_device(pr->handle, &device))
492 return;
493
494 /* add file 'performance' [R/W] */
495 proc_create_data(ACPI_PROCESSOR_FILE_PERFORMANCE, S_IFREG | S_IRUGO,
496 acpi_device_dir(device),
497 &acpi_processor_perf_fops, acpi_driver_data(device));
498 return;
499}
500
501static void acpi_cpufreq_remove_file(struct acpi_processor *pr)
502{
503 struct acpi_device *device = NULL;
504
505
506 if (acpi_bus_get_device(pr->handle, &device))
507 return;
508
509 /* remove file 'performance' */
510 remove_proc_entry(ACPI_PROCESSOR_FILE_PERFORMANCE,
511 acpi_device_dir(device));
512
513 return;
514}
515
516#else
517static void acpi_cpufreq_add_file(struct acpi_processor *pr)
518{
519 return;
520}
521static void acpi_cpufreq_remove_file(struct acpi_processor *pr)
522{
523 return;
524}
525#endif /* CONFIG_X86_ACPI_CPUFREQ_PROC_INTF */
526
527static int acpi_processor_get_psd(struct acpi_processor *pr) 429static int acpi_processor_get_psd(struct acpi_processor *pr)
528{ 430{
529 int result = 0; 431 int result = 0;
@@ -747,14 +649,12 @@ err_ret:
747} 649}
748EXPORT_SYMBOL(acpi_processor_preregister_performance); 650EXPORT_SYMBOL(acpi_processor_preregister_performance);
749 651
750
751int 652int
752acpi_processor_register_performance(struct acpi_processor_performance 653acpi_processor_register_performance(struct acpi_processor_performance
753 *performance, unsigned int cpu) 654 *performance, unsigned int cpu)
754{ 655{
755 struct acpi_processor *pr; 656 struct acpi_processor *pr;
756 657
757
758 if (!(acpi_processor_ppc_status & PPC_REGISTERED)) 658 if (!(acpi_processor_ppc_status & PPC_REGISTERED))
759 return -EINVAL; 659 return -EINVAL;
760 660
@@ -781,8 +681,6 @@ acpi_processor_register_performance(struct acpi_processor_performance
781 return -EIO; 681 return -EIO;
782 } 682 }
783 683
784 acpi_cpufreq_add_file(pr);
785
786 mutex_unlock(&performance_mutex); 684 mutex_unlock(&performance_mutex);
787 return 0; 685 return 0;
788} 686}
@@ -795,7 +693,6 @@ acpi_processor_unregister_performance(struct acpi_processor_performance
795{ 693{
796 struct acpi_processor *pr; 694 struct acpi_processor *pr;
797 695
798
799 mutex_lock(&performance_mutex); 696 mutex_lock(&performance_mutex);
800 697
801 pr = per_cpu(processors, cpu); 698 pr = per_cpu(processors, cpu);
@@ -808,8 +705,6 @@ acpi_processor_unregister_performance(struct acpi_processor_performance
808 kfree(pr->performance->states); 705 kfree(pr->performance->states);
809 pr->performance = NULL; 706 pr->performance = NULL;
810 707
811 acpi_cpufreq_remove_file(pr);
812
813 mutex_unlock(&performance_mutex); 708 mutex_unlock(&performance_mutex);
814 709
815 return; 710 return;
diff --git a/drivers/acpi/sleep.c b/drivers/acpi/sleep.c
index 7e3c609cbef2..519266654f06 100644
--- a/drivers/acpi/sleep.c
+++ b/drivers/acpi/sleep.c
@@ -90,31 +90,6 @@ void __init acpi_old_suspend_ordering(void)
90 old_suspend_ordering = true; 90 old_suspend_ordering = true;
91} 91}
92 92
93/*
94 * According to the ACPI specification the BIOS should make sure that ACPI is
95 * enabled and SCI_EN bit is set on wake-up from S1 - S3 sleep states. Still,
96 * some BIOSes don't do that and therefore we use acpi_enable() to enable ACPI
97 * on such systems during resume. Unfortunately that doesn't help in
98 * particularly pathological cases in which SCI_EN has to be set directly on
99 * resume, although the specification states very clearly that this flag is
100 * owned by the hardware. The set_sci_en_on_resume variable will be set in such
101 * cases.
102 */
103static bool set_sci_en_on_resume;
104/*
105 * The ACPI specification wants us to save NVS memory regions during hibernation
106 * and to restore them during the subsequent resume. However, it is not certain
107 * if this mechanism is going to work on all machines, so we allow the user to
108 * disable this mechanism using the 'acpi_sleep=s4_nonvs' kernel command line
109 * option.
110 */
111static bool s4_no_nvs;
112
113void __init acpi_s4_no_nvs(void)
114{
115 s4_no_nvs = true;
116}
117
118/** 93/**
119 * acpi_pm_disable_gpes - Disable the GPEs. 94 * acpi_pm_disable_gpes - Disable the GPEs.
120 */ 95 */
@@ -193,6 +168,18 @@ static void acpi_pm_end(void)
193#endif /* CONFIG_ACPI_SLEEP */ 168#endif /* CONFIG_ACPI_SLEEP */
194 169
195#ifdef CONFIG_SUSPEND 170#ifdef CONFIG_SUSPEND
171/*
172 * According to the ACPI specification the BIOS should make sure that ACPI is
173 * enabled and SCI_EN bit is set on wake-up from S1 - S3 sleep states. Still,
174 * some BIOSes don't do that and therefore we use acpi_enable() to enable ACPI
175 * on such systems during resume. Unfortunately that doesn't help in
176 * particularly pathological cases in which SCI_EN has to be set directly on
177 * resume, although the specification states very clearly that this flag is
178 * owned by the hardware. The set_sci_en_on_resume variable will be set in such
179 * cases.
180 */
181static bool set_sci_en_on_resume;
182
196extern void do_suspend_lowlevel(void); 183extern void do_suspend_lowlevel(void);
197 184
198static u32 acpi_suspend_states[] = { 185static u32 acpi_suspend_states[] = {
@@ -396,6 +383,20 @@ static struct dmi_system_id __initdata acpisleep_dmi_table[] = {
396#endif /* CONFIG_SUSPEND */ 383#endif /* CONFIG_SUSPEND */
397 384
398#ifdef CONFIG_HIBERNATION 385#ifdef CONFIG_HIBERNATION
386/*
387 * The ACPI specification wants us to save NVS memory regions during hibernation
388 * and to restore them during the subsequent resume. However, it is not certain
389 * if this mechanism is going to work on all machines, so we allow the user to
390 * disable this mechanism using the 'acpi_sleep=s4_nonvs' kernel command line
391 * option.
392 */
393static bool s4_no_nvs;
394
395void __init acpi_s4_no_nvs(void)
396{
397 s4_no_nvs = true;
398}
399
399static unsigned long s4_hardware_signature; 400static unsigned long s4_hardware_signature;
400static struct acpi_table_facs *facs; 401static struct acpi_table_facs *facs;
401static bool nosigcheck; 402static bool nosigcheck;
@@ -679,7 +680,7 @@ static void acpi_power_off_prepare(void)
679static void acpi_power_off(void) 680static void acpi_power_off(void)
680{ 681{
681 /* acpi_sleep_prepare(ACPI_STATE_S5) should have already been called */ 682 /* acpi_sleep_prepare(ACPI_STATE_S5) should have already been called */
682 printk("%s called\n", __func__); 683 printk(KERN_DEBUG "%s called\n", __func__);
683 local_irq_disable(); 684 local_irq_disable();
684 acpi_enable_wakeup_device(ACPI_STATE_S5); 685 acpi_enable_wakeup_device(ACPI_STATE_S5);
685 acpi_enter_sleep_state(ACPI_STATE_S5); 686 acpi_enter_sleep_state(ACPI_STATE_S5);
diff --git a/drivers/acpi/tables.c b/drivers/acpi/tables.c
index 775c97a282bd..a8852952fac4 100644
--- a/drivers/acpi/tables.c
+++ b/drivers/acpi/tables.c
@@ -293,7 +293,12 @@ static void __init check_multiple_madt(void)
293 293
294int __init acpi_table_init(void) 294int __init acpi_table_init(void)
295{ 295{
296 acpi_initialize_tables(initial_tables, ACPI_MAX_TABLES, 0); 296 acpi_status status;
297
298 status = acpi_initialize_tables(initial_tables, ACPI_MAX_TABLES, 0);
299 if (ACPI_FAILURE(status))
300 return 1;
301
297 check_multiple_madt(); 302 check_multiple_madt();
298 return 0; 303 return 0;
299} 304}
diff --git a/drivers/acpi/video.c b/drivers/acpi/video.c
index f261737636da..bb5ed059114a 100644
--- a/drivers/acpi/video.c
+++ b/drivers/acpi/video.c
@@ -1020,7 +1020,7 @@ acpi_video_device_brightness_seq_show(struct seq_file *seq, void *offset)
1020 } 1020 }
1021 1021
1022 seq_printf(seq, "levels: "); 1022 seq_printf(seq, "levels: ");
1023 for (i = 0; i < dev->brightness->count; i++) 1023 for (i = 2; i < dev->brightness->count; i++)
1024 seq_printf(seq, " %d", dev->brightness->levels[i]); 1024 seq_printf(seq, " %d", dev->brightness->levels[i]);
1025 seq_printf(seq, "\ncurrent: %d\n", dev->brightness->curr); 1025 seq_printf(seq, "\ncurrent: %d\n", dev->brightness->curr);
1026 1026
@@ -1059,7 +1059,7 @@ acpi_video_device_write_brightness(struct file *file,
1059 return -EFAULT; 1059 return -EFAULT;
1060 1060
1061 /* validate through the list of available levels */ 1061 /* validate through the list of available levels */
1062 for (i = 0; i < dev->brightness->count; i++) 1062 for (i = 2; i < dev->brightness->count; i++)
1063 if (level == dev->brightness->levels[i]) { 1063 if (level == dev->brightness->levels[i]) {
1064 if (ACPI_SUCCESS 1064 if (ACPI_SUCCESS
1065 (acpi_video_device_lcd_set_level(dev, level))) 1065 (acpi_video_device_lcd_set_level(dev, level)))
@@ -1260,7 +1260,7 @@ static int acpi_video_bus_POST_info_seq_show(struct seq_file *seq, void *offset)
1260 printk(KERN_WARNING PREFIX 1260 printk(KERN_WARNING PREFIX
1261 "This indicates a BIOS bug. Please contact the manufacturer.\n"); 1261 "This indicates a BIOS bug. Please contact the manufacturer.\n");
1262 } 1262 }
1263 printk("%llx\n", options); 1263 printk(KERN_WARNING "%llx\n", options);
1264 seq_printf(seq, "can POST: <integrated video>"); 1264 seq_printf(seq, "can POST: <integrated video>");
1265 if (options & 2) 1265 if (options & 2)
1266 seq_printf(seq, " <PCI video>"); 1266 seq_printf(seq, " <PCI video>");
@@ -1712,7 +1712,7 @@ acpi_video_get_next_level(struct acpi_video_device *device,
1712 max = max_below = 0; 1712 max = max_below = 0;
1713 min = min_above = 255; 1713 min = min_above = 255;
1714 /* Find closest level to level_current */ 1714 /* Find closest level to level_current */
1715 for (i = 0; i < device->brightness->count; i++) { 1715 for (i = 2; i < device->brightness->count; i++) {
1716 l = device->brightness->levels[i]; 1716 l = device->brightness->levels[i];
1717 if (abs(l - level_current) < abs(delta)) { 1717 if (abs(l - level_current) < abs(delta)) {
1718 delta = l - level_current; 1718 delta = l - level_current;
@@ -1722,7 +1722,7 @@ acpi_video_get_next_level(struct acpi_video_device *device,
1722 } 1722 }
1723 /* Ajust level_current to closest available level */ 1723 /* Ajust level_current to closest available level */
1724 level_current += delta; 1724 level_current += delta;
1725 for (i = 0; i < device->brightness->count; i++) { 1725 for (i = 2; i < device->brightness->count; i++) {
1726 l = device->brightness->levels[i]; 1726 l = device->brightness->levels[i];
1727 if (l < min) 1727 if (l < min)
1728 min = l; 1728 min = l;
@@ -2006,6 +2006,12 @@ static int acpi_video_bus_add(struct acpi_device *device)
2006 device->pnp.bus_id[3] = '0' + instance; 2006 device->pnp.bus_id[3] = '0' + instance;
2007 instance ++; 2007 instance ++;
2008 } 2008 }
2009 /* a hack to fix the duplicate name "VGA" problem on Pa 3553 */
2010 if (!strcmp(device->pnp.bus_id, "VGA")) {
2011 if (instance)
2012 device->pnp.bus_id[3] = '0' + instance;
2013 instance++;
2014 }
2009 2015
2010 video->device = device; 2016 video->device = device;
2011 strcpy(acpi_device_name(device), ACPI_VIDEO_BUS_NAME); 2017 strcpy(acpi_device_name(device), ACPI_VIDEO_BUS_NAME);
generated by cgit v1.2.2 (git 2.25.0) at 2024-12-26 23:54:41 -0500