diff options
Diffstat (limited to 'drivers/acpi')
31 files changed, 701 insertions, 1506 deletions
diff --git a/drivers/acpi/Kconfig b/drivers/acpi/Kconfig index 3a17ca5fff6f..de0e3df76776 100644 --- a/drivers/acpi/Kconfig +++ b/drivers/acpi/Kconfig @@ -73,17 +73,6 @@ config ACPI_PROCFS_POWER Say N to delete power /proc/acpi/ directories that have moved to /sys/ -config ACPI_POWER_METER - tristate "ACPI 4.0 power meter" - depends on HWMON - help - This driver exposes ACPI 4.0 power meters as hardware monitoring - devices. Say Y (or M) if you have a computer with ACPI 4.0 firmware - and a power meter. - - To compile this driver as a module, choose M here: - the module will be called power-meter. - config ACPI_EC_DEBUGFS tristate "EC read/write access through /sys/kernel/debug/ec" default n @@ -380,6 +369,21 @@ config ACPI_HED which is used to report some hardware errors notified via SCI, mainly the corrected errors. +config ACPI_CUSTOM_METHOD + tristate "Allow ACPI methods to be inserted/replaced at run time" + depends on DEBUG_FS + default n + help + This debug facility allows ACPI AML methods to me inserted and/or + replaced without rebooting the system. For details refer to: + Documentation/acpi/method-customizing.txt. + + NOTE: This option is security sensitive, because it allows arbitrary + kernel memory to be written to by root (uid=0) users, allowing them + to bypass certain security measures (e.g. if root is not allowed to + load additional kernel modules after boot, this feature may be used + to override that restriction). + source "drivers/acpi/apei/Kconfig" endif # ACPI diff --git a/drivers/acpi/Makefile b/drivers/acpi/Makefile index d113fa5100b2..ecb26b4f29a0 100644 --- a/drivers/acpi/Makefile +++ b/drivers/acpi/Makefile @@ -59,9 +59,9 @@ obj-$(CONFIG_ACPI_HOTPLUG_MEMORY) += acpi_memhotplug.o obj-$(CONFIG_ACPI_BATTERY) += battery.o obj-$(CONFIG_ACPI_SBS) += sbshc.o obj-$(CONFIG_ACPI_SBS) += sbs.o -obj-$(CONFIG_ACPI_POWER_METER) += power_meter.o obj-$(CONFIG_ACPI_HED) += hed.o obj-$(CONFIG_ACPI_EC_DEBUGFS) += ec_sys.o +obj-$(CONFIG_ACPI_CUSTOM_METHOD)+= custom_method.o # processor has its own "processor." module_param namespace processor-y := processor_driver.o processor_throttling.o diff --git a/drivers/acpi/acpica/Makefile b/drivers/acpi/acpica/Makefile index a1224712fd0c..301bd2d388ad 100644 --- a/drivers/acpi/acpica/Makefile +++ b/drivers/acpi/acpica/Makefile @@ -14,7 +14,7 @@ acpi-y := dsfield.o dsmthdat.o dsopcode.o dswexec.o dswscope.o \ acpi-y += evevent.o evregion.o evsci.o evxfevnt.o \ evmisc.o evrgnini.o evxface.o evxfregn.o \ - evgpe.o evgpeblk.o evgpeinit.o evgpeutil.o evxfgpe.o + evgpe.o evgpeblk.o evgpeinit.o evgpeutil.o evxfgpe.o evglock.o acpi-y += exconfig.o exfield.o exnames.o exoparg6.o exresolv.o exstorob.o\ exconvrt.o exfldio.o exoparg1.o exprep.o exresop.o exsystem.o\ diff --git a/drivers/acpi/acpica/acconfig.h b/drivers/acpi/acpica/acconfig.h index ab87396c2c07..bc533dde16c4 100644 --- a/drivers/acpi/acpica/acconfig.h +++ b/drivers/acpi/acpica/acconfig.h @@ -187,7 +187,6 @@ /* Operation regions */ -#define ACPI_NUM_PREDEFINED_REGIONS 9 #define ACPI_USER_REGION_BEGIN 0x80 /* Maximum space_ids for Operation Regions */ diff --git a/drivers/acpi/acpica/acevents.h b/drivers/acpi/acpica/acevents.h index 41d247daf461..bea3b4899183 100644 --- a/drivers/acpi/acpica/acevents.h +++ b/drivers/acpi/acpica/acevents.h @@ -58,12 +58,6 @@ u32 acpi_ev_fixed_event_detect(void); */ u8 acpi_ev_is_notify_object(struct acpi_namespace_node *node); -acpi_status acpi_ev_acquire_global_lock(u16 timeout); - -acpi_status acpi_ev_release_global_lock(void); - -acpi_status acpi_ev_init_global_lock_handler(void); - u32 acpi_ev_get_gpe_number_index(u32 gpe_number); acpi_status @@ -71,6 +65,17 @@ acpi_ev_queue_notify_request(struct acpi_namespace_node *node, u32 notify_value); /* + * evglock - Global Lock support + */ +acpi_status acpi_ev_init_global_lock_handler(void); + +acpi_status acpi_ev_acquire_global_lock(u16 timeout); + +acpi_status acpi_ev_release_global_lock(void); + +acpi_status acpi_ev_remove_global_lock_handler(void); + +/* * evgpe - Low-level GPE support */ u32 acpi_ev_gpe_detect(struct acpi_gpe_xrupt_info *gpe_xrupt_list); diff --git a/drivers/acpi/acpica/acglobal.h b/drivers/acpi/acpica/acglobal.h index d69750b83b36..73863d86f022 100644 --- a/drivers/acpi/acpica/acglobal.h +++ b/drivers/acpi/acpica/acglobal.h @@ -214,24 +214,23 @@ ACPI_EXTERN struct acpi_mutex_info acpi_gbl_mutex_info[ACPI_NUM_MUTEX]; /* * Global lock mutex is an actual AML mutex object - * Global lock semaphore works in conjunction with the HW global lock + * Global lock semaphore works in conjunction with the actual global lock + * Global lock spinlock is used for "pending" handshake */ ACPI_EXTERN union acpi_operand_object *acpi_gbl_global_lock_mutex; ACPI_EXTERN acpi_semaphore acpi_gbl_global_lock_semaphore; +ACPI_EXTERN acpi_spinlock acpi_gbl_global_lock_pending_lock; ACPI_EXTERN u16 acpi_gbl_global_lock_handle; ACPI_EXTERN u8 acpi_gbl_global_lock_acquired; ACPI_EXTERN u8 acpi_gbl_global_lock_present; +ACPI_EXTERN u8 acpi_gbl_global_lock_pending; /* * Spinlocks are used for interfaces that can be possibly called at * interrupt level */ -ACPI_EXTERN spinlock_t _acpi_gbl_gpe_lock; /* For GPE data structs and registers */ -ACPI_EXTERN spinlock_t _acpi_gbl_hardware_lock; /* For ACPI H/W except GPE registers */ -ACPI_EXTERN spinlock_t _acpi_ev_global_lock_pending_lock; /* For global lock */ -#define acpi_gbl_gpe_lock &_acpi_gbl_gpe_lock -#define acpi_gbl_hardware_lock &_acpi_gbl_hardware_lock -#define acpi_ev_global_lock_pending_lock &_acpi_ev_global_lock_pending_lock +ACPI_EXTERN acpi_spinlock acpi_gbl_gpe_lock; /* For GPE data structs and registers */ +ACPI_EXTERN acpi_spinlock acpi_gbl_hardware_lock; /* For ACPI H/W except GPE registers */ /***************************************************************************** * diff --git a/drivers/acpi/acpica/amlcode.h b/drivers/acpi/acpica/amlcode.h index f4f0998d3967..1077f17859ed 100644 --- a/drivers/acpi/acpica/amlcode.h +++ b/drivers/acpi/acpica/amlcode.h @@ -394,21 +394,6 @@ #define AML_CLASS_METHOD_CALL 0x09 #define AML_CLASS_UNKNOWN 0x0A -/* Predefined Operation Region space_iDs */ - -typedef enum { - REGION_MEMORY = 0, - REGION_IO, - REGION_PCI_CONFIG, - REGION_EC, - REGION_SMBUS, - REGION_CMOS, - REGION_PCI_BAR, - REGION_IPMI, - REGION_DATA_TABLE, /* Internal use only */ - REGION_FIXED_HW = 0x7F -} AML_REGION_TYPES; - /* Comparison operation codes for match_op operator */ typedef enum { diff --git a/drivers/acpi/acpica/dswload.c b/drivers/acpi/acpica/dswload.c index 23a3b1ab20c1..324acec1179a 100644 --- a/drivers/acpi/acpica/dswload.c +++ b/drivers/acpi/acpica/dswload.c @@ -450,7 +450,7 @@ acpi_status acpi_ds_load1_end_op(struct acpi_walk_state *walk_state) status = acpi_ex_create_region(op->named.data, op->named.length, - REGION_DATA_TABLE, + ACPI_ADR_SPACE_DATA_TABLE, walk_state); if (ACPI_FAILURE(status)) { return_ACPI_STATUS(status); diff --git a/drivers/acpi/acpica/dswload2.c b/drivers/acpi/acpica/dswload2.c index 4be4e921dfe1..976318138c56 100644 --- a/drivers/acpi/acpica/dswload2.c +++ b/drivers/acpi/acpica/dswload2.c @@ -562,7 +562,7 @@ acpi_status acpi_ds_load2_end_op(struct acpi_walk_state *walk_state) ((op->common.value.arg)->common.value. integer); } else { - region_space = REGION_DATA_TABLE; + region_space = ACPI_ADR_SPACE_DATA_TABLE; } /* diff --git a/drivers/acpi/acpica/evglock.c b/drivers/acpi/acpica/evglock.c new file mode 100644 index 000000000000..56a562a1e5d7 --- /dev/null +++ b/drivers/acpi/acpica/evglock.c @@ -0,0 +1,335 @@ +/****************************************************************************** + * + * Module Name: evglock - Global Lock support + * + *****************************************************************************/ + +/* + * Copyright (C) 2000 - 2011, Intel Corp. + * All rights reserved. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions + * are met: + * 1. Redistributions of source code must retain the above copyright + * notice, this list of conditions, and the following disclaimer, + * without modification. + * 2. Redistributions in binary form must reproduce at minimum a disclaimer + * substantially similar to the "NO WARRANTY" disclaimer below + * ("Disclaimer") and any redistribution must be conditioned upon + * including a substantially similar Disclaimer requirement for further + * binary redistribution. + * 3. Neither the names of the above-listed copyright holders nor the names + * of any contributors may be used to endorse or promote products derived + * from this software without specific prior written permission. + * + * Alternatively, this software may be distributed under the terms of the + * GNU General Public License ("GPL") version 2 as published by the Free + * Software Foundation. + * + * NO WARRANTY + * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS + * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT + * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTIBILITY AND FITNESS FOR + * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT + * HOLDERS OR CONTRIBUTORS BE LIABLE FOR SPECIAL, EXEMPLARY, OR CONSEQUENTIAL + * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS + * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) + * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, + * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING + * IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE + * POSSIBILITY OF SUCH DAMAGES. + */ + +#include <acpi/acpi.h> +#include "accommon.h" +#include "acevents.h" +#include "acinterp.h" + +#define _COMPONENT ACPI_EVENTS +ACPI_MODULE_NAME("evglock") + +/* Local prototypes */ +static u32 acpi_ev_global_lock_handler(void *context); + +/******************************************************************************* + * + * FUNCTION: acpi_ev_init_global_lock_handler + * + * PARAMETERS: None + * + * RETURN: Status + * + * DESCRIPTION: Install a handler for the global lock release event + * + ******************************************************************************/ + +acpi_status acpi_ev_init_global_lock_handler(void) +{ + acpi_status status; + + ACPI_FUNCTION_TRACE(ev_init_global_lock_handler); + + /* Attempt installation of the global lock handler */ + + status = acpi_install_fixed_event_handler(ACPI_EVENT_GLOBAL, + acpi_ev_global_lock_handler, + NULL); + + /* + * If the global lock does not exist on this platform, the attempt to + * enable GBL_STATUS will fail (the GBL_ENABLE bit will not stick). + * Map to AE_OK, but mark global lock as not present. Any attempt to + * actually use the global lock will be flagged with an error. + */ + acpi_gbl_global_lock_present = FALSE; + if (status == AE_NO_HARDWARE_RESPONSE) { + ACPI_ERROR((AE_INFO, + "No response from Global Lock hardware, disabling lock")); + + return_ACPI_STATUS(AE_OK); + } + + status = acpi_os_create_lock(&acpi_gbl_global_lock_pending_lock); + if (ACPI_FAILURE(status)) { + return_ACPI_STATUS(status); + } + + acpi_gbl_global_lock_pending = FALSE; + acpi_gbl_global_lock_present = TRUE; + return_ACPI_STATUS(status); +} + +/******************************************************************************* + * + * FUNCTION: acpi_ev_remove_global_lock_handler + * + * PARAMETERS: None + * + * RETURN: Status + * + * DESCRIPTION: Remove the handler for the Global Lock + * + ******************************************************************************/ + +acpi_status acpi_ev_remove_global_lock_handler(void) +{ + acpi_status status; + + ACPI_FUNCTION_TRACE(ev_remove_global_lock_handler); + + acpi_gbl_global_lock_present = FALSE; + status = acpi_remove_fixed_event_handler(ACPI_EVENT_GLOBAL, + acpi_ev_global_lock_handler); + + return_ACPI_STATUS(status); +} + +/******************************************************************************* + * + * FUNCTION: acpi_ev_global_lock_handler + * + * PARAMETERS: Context - From thread interface, not used + * + * RETURN: ACPI_INTERRUPT_HANDLED + * + * DESCRIPTION: Invoked directly from the SCI handler when a global lock + * release interrupt occurs. If there is actually a pending + * request for the lock, signal the waiting thread. + * + ******************************************************************************/ + +static u32 acpi_ev_global_lock_handler(void *context) +{ + acpi_status status; + acpi_cpu_flags flags; + + flags = acpi_os_acquire_lock(acpi_gbl_global_lock_pending_lock); + + /* + * If a request for the global lock is not actually pending, + * we are done. This handles "spurious" global lock interrupts + * which are possible (and have been seen) with bad BIOSs. + */ + if (!acpi_gbl_global_lock_pending) { + goto cleanup_and_exit; + } + + /* + * Send a unit to the global lock semaphore. The actual acquisition + * of the global lock will be performed by the waiting thread. + */ + status = acpi_os_signal_semaphore(acpi_gbl_global_lock_semaphore, 1); + if (ACPI_FAILURE(status)) { + ACPI_ERROR((AE_INFO, "Could not signal Global Lock semaphore")); + } + + acpi_gbl_global_lock_pending = FALSE; + + cleanup_and_exit: + + acpi_os_release_lock(acpi_gbl_global_lock_pending_lock, flags); + return (ACPI_INTERRUPT_HANDLED); +} + +/****************************************************************************** + * + * FUNCTION: acpi_ev_acquire_global_lock + * + * PARAMETERS: Timeout - Max time to wait for the lock, in millisec. + * + * RETURN: Status + * + * DESCRIPTION: Attempt to gain ownership of the Global Lock. + * + * MUTEX: Interpreter must be locked + * + * Note: The original implementation allowed multiple threads to "acquire" the + * Global Lock, and the OS would hold the lock until the last thread had + * released it. However, this could potentially starve the BIOS out of the + * lock, especially in the case where there is a tight handshake between the + * Embedded Controller driver and the BIOS. Therefore, this implementation + * allows only one thread to acquire the HW Global Lock at a time, and makes + * the global lock appear as a standard mutex on the OS side. + * + *****************************************************************************/ + +acpi_status acpi_ev_acquire_global_lock(u16 timeout) +{ + acpi_cpu_flags flags; + acpi_status status; + u8 acquired = FALSE; + + ACPI_FUNCTION_TRACE(ev_acquire_global_lock); + + /* + * Only one thread can acquire the GL at a time, the global_lock_mutex + * enforces this. This interface releases the interpreter if we must wait. + */ + status = + acpi_ex_system_wait_mutex(acpi_gbl_global_lock_mutex->mutex. + os_mutex, timeout); + if (ACPI_FAILURE(status)) { + return_ACPI_STATUS(status); + } + + /* + * Update the global lock handle and check for wraparound. The handle is + * only used for the external global lock interfaces, but it is updated + * here to properly handle the case where a single thread may acquire the + * lock via both the AML and the acpi_acquire_global_lock interfaces. The + * handle is therefore updated on the first acquire from a given thread + * regardless of where the acquisition request originated. + */ + acpi_gbl_global_lock_handle++; + if (acpi_gbl_global_lock_handle == 0) { + acpi_gbl_global_lock_handle = 1; + } + + /* + * Make sure that a global lock actually exists. If not, just + * treat the lock as a standard mutex. + */ + if (!acpi_gbl_global_lock_present) { + acpi_gbl_global_lock_acquired = TRUE; + return_ACPI_STATUS(AE_OK); + } + + flags = acpi_os_acquire_lock(acpi_gbl_global_lock_pending_lock); + + do { + + /* Attempt to acquire the actual hardware lock */ + + ACPI_ACQUIRE_GLOBAL_LOCK(acpi_gbl_FACS, acquired); + if (acquired) { + acpi_gbl_global_lock_acquired = TRUE; + ACPI_DEBUG_PRINT((ACPI_DB_EXEC, + "Acquired hardware Global Lock\n")); + break; + } + + /* + * Did not get the lock. The pending bit was set above, and + * we must now wait until we receive the global lock + * released interrupt. + */ + acpi_gbl_global_lock_pending = TRUE; + acpi_os_release_lock(acpi_gbl_global_lock_pending_lock, flags); + + ACPI_DEBUG_PRINT((ACPI_DB_EXEC, + "Waiting for hardware Global Lock\n")); + + /* + * Wait for handshake with the global lock interrupt handler. + * This interface releases the interpreter if we must wait. + */ + status = + acpi_ex_system_wait_semaphore + (acpi_gbl_global_lock_semaphore, ACPI_WAIT_FOREVER); + + flags = acpi_os_acquire_lock(acpi_gbl_global_lock_pending_lock); + + } while (ACPI_SUCCESS(status)); + + acpi_gbl_global_lock_pending = FALSE; + acpi_os_release_lock(acpi_gbl_global_lock_pending_lock, flags); + + return_ACPI_STATUS(status); +} + +/******************************************************************************* + * + * FUNCTION: acpi_ev_release_global_lock + * + * PARAMETERS: None + * + * RETURN: Status + * + * DESCRIPTION: Releases ownership of the Global Lock. + * + ******************************************************************************/ + +acpi_status acpi_ev_release_global_lock(void) +{ + u8 pending = FALSE; + acpi_status status = AE_OK; + + ACPI_FUNCTION_TRACE(ev_release_global_lock); + + /* Lock must be already acquired */ + + if (!acpi_gbl_global_lock_acquired) { + ACPI_WARNING((AE_INFO, + "Cannot release the ACPI Global Lock, it has not been acquired")); + return_ACPI_STATUS(AE_NOT_ACQUIRED); + } + + if (acpi_gbl_global_lock_present) { + + /* Allow any thread to release the lock */ + + ACPI_RELEASE_GLOBAL_LOCK(acpi_gbl_FACS, pending); + + /* + * If the pending bit was set, we must write GBL_RLS to the control + * register + */ + if (pending) { + status = + acpi_write_bit_register + (ACPI_BITREG_GLOBAL_LOCK_RELEASE, + ACPI_ENABLE_EVENT); + } + + ACPI_DEBUG_PRINT((ACPI_DB_EXEC, + "Released hardware Global Lock\n")); + } + + acpi_gbl_global_lock_acquired = FALSE; + + /* Release the local GL mutex */ + + acpi_os_release_mutex(acpi_gbl_global_lock_mutex->mutex.os_mutex); + return_ACPI_STATUS(status); +} diff --git a/drivers/acpi/acpica/evmisc.c b/drivers/acpi/acpica/evmisc.c index 7dc80946f7bd..d0b331844427 100644 --- a/drivers/acpi/acpica/evmisc.c +++ b/drivers/acpi/acpica/evmisc.c @@ -45,7 +45,6 @@ #include "accommon.h" #include "acevents.h" #include "acnamesp.h" -#include "acinterp.h" #define _COMPONENT ACPI_EVENTS ACPI_MODULE_NAME("evmisc") @@ -53,10 +52,6 @@ ACPI_MODULE_NAME("evmisc") /* Local prototypes */ static void ACPI_SYSTEM_XFACE acpi_ev_notify_dispatch(void *context); -static u32 acpi_ev_global_lock_handler(void *context); - -static acpi_status acpi_ev_remove_global_lock_handler(void); - /******************************************************************************* * * FUNCTION: acpi_ev_is_notify_object @@ -275,304 +270,6 @@ static void ACPI_SYSTEM_XFACE acpi_ev_notify_dispatch(void *context) acpi_ut_delete_generic_state(notify_info); } -/******************************************************************************* - * - * FUNCTION: acpi_ev_global_lock_handler - * - * PARAMETERS: Context - From thread interface, not used - * - * RETURN: ACPI_INTERRUPT_HANDLED - * - * DESCRIPTION: Invoked directly from the SCI handler when a global lock - * release interrupt occurs. If there's a thread waiting for - * the global lock, signal it. - * - * NOTE: Assumes that the semaphore can be signaled from interrupt level. If - * this is not possible for some reason, a separate thread will have to be - * scheduled to do this. - * - ******************************************************************************/ -static u8 acpi_ev_global_lock_pending; - -static u32 acpi_ev_global_lock_handler(void *context) -{ - acpi_status status; - acpi_cpu_flags flags; - - flags = acpi_os_acquire_lock(acpi_ev_global_lock_pending_lock); - - if (!acpi_ev_global_lock_pending) { - goto out; - } - - /* Send a unit to the semaphore */ - - status = acpi_os_signal_semaphore(acpi_gbl_global_lock_semaphore, 1); - if (ACPI_FAILURE(status)) { - ACPI_ERROR((AE_INFO, "Could not signal Global Lock semaphore")); - } - - acpi_ev_global_lock_pending = FALSE; - - out: - acpi_os_release_lock(acpi_ev_global_lock_pending_lock, flags); - - return (ACPI_INTERRUPT_HANDLED); -} - -/******************************************************************************* - * - * FUNCTION: acpi_ev_init_global_lock_handler - * - * PARAMETERS: None - * - * RETURN: Status - * - * DESCRIPTION: Install a handler for the global lock release event - * - ******************************************************************************/ - -acpi_status acpi_ev_init_global_lock_handler(void) -{ - acpi_status status; - - ACPI_FUNCTION_TRACE(ev_init_global_lock_handler); - - /* Attempt installation of the global lock handler */ - - status = acpi_install_fixed_event_handler(ACPI_EVENT_GLOBAL, - acpi_ev_global_lock_handler, - NULL); - - /* - * If the global lock does not exist on this platform, the attempt to - * enable GBL_STATUS will fail (the GBL_ENABLE bit will not stick). - * Map to AE_OK, but mark global lock as not present. Any attempt to - * actually use the global lock will be flagged with an error. - */ - if (status == AE_NO_HARDWARE_RESPONSE) { - ACPI_ERROR((AE_INFO, - "No response from Global Lock hardware, disabling lock")); - - acpi_gbl_global_lock_present = FALSE; - return_ACPI_STATUS(AE_OK); - } - - acpi_gbl_global_lock_present = TRUE; - return_ACPI_STATUS(status); -} - -/******************************************************************************* - * - * FUNCTION: acpi_ev_remove_global_lock_handler - * - * PARAMETERS: None - * - * RETURN: Status - * - * DESCRIPTION: Remove the handler for the Global Lock - * - ******************************************************************************/ - -static acpi_status acpi_ev_remove_global_lock_handler(void) -{ - acpi_status status; - - ACPI_FUNCTION_TRACE(ev_remove_global_lock_handler); - - acpi_gbl_global_lock_present = FALSE; - status = acpi_remove_fixed_event_handler(ACPI_EVENT_GLOBAL, - acpi_ev_global_lock_handler); - - return_ACPI_STATUS(status); -} - -/****************************************************************************** - * - * FUNCTION: acpi_ev_acquire_global_lock - * - * PARAMETERS: Timeout - Max time to wait for the lock, in millisec. - * - * RETURN: Status - * - * DESCRIPTION: Attempt to gain ownership of the Global Lock. - * - * MUTEX: Interpreter must be locked - * - * Note: The original implementation allowed multiple threads to "acquire" the - * Global Lock, and the OS would hold the lock until the last thread had - * released it. However, this could potentially starve the BIOS out of the - * lock, especially in the case where there is a tight handshake between the - * Embedded Controller driver and the BIOS. Therefore, this implementation - * allows only one thread to acquire the HW Global Lock at a time, and makes - * the global lock appear as a standard mutex on the OS side. - * - *****************************************************************************/ -static acpi_thread_id acpi_ev_global_lock_thread_id; -static int acpi_ev_global_lock_acquired; - -acpi_status acpi_ev_acquire_global_lock(u16 timeout) -{ - acpi_cpu_flags flags; - acpi_status status = AE_OK; - u8 acquired = FALSE; - - ACPI_FUNCTION_TRACE(ev_acquire_global_lock); - - /* - * Only one thread can acquire the GL at a time, the global_lock_mutex - * enforces this. This interface releases the interpreter if we must wait. - */ - status = acpi_ex_system_wait_mutex( - acpi_gbl_global_lock_mutex->mutex.os_mutex, 0); - if (status == AE_TIME) { - if (acpi_ev_global_lock_thread_id == acpi_os_get_thread_id()) { - acpi_ev_global_lock_acquired++; - return AE_OK; - } - } - - if (ACPI_FAILURE(status)) { - status = acpi_ex_system_wait_mutex( - acpi_gbl_global_lock_mutex->mutex.os_mutex, - timeout); - } - if (ACPI_FAILURE(status)) { - return_ACPI_STATUS(status); - } - - acpi_ev_global_lock_thread_id = acpi_os_get_thread_id(); - acpi_ev_global_lock_acquired++; - - /* - * Update the global lock handle and check for wraparound. The handle is - * only used for the external global lock interfaces, but it is updated - * here to properly handle the case where a single thread may acquire the - * lock via both the AML and the acpi_acquire_global_lock interfaces. The - * handle is therefore updated on the first acquire from a given thread - * regardless of where the acquisition request originated. - */ - acpi_gbl_global_lock_handle++; - if (acpi_gbl_global_lock_handle == 0) { - acpi_gbl_global_lock_handle = 1; - } - - /* - * Make sure that a global lock actually exists. If not, just treat the - * lock as a standard mutex. - */ - if (!acpi_gbl_global_lock_present) { - acpi_gbl_global_lock_acquired = TRUE; - return_ACPI_STATUS(AE_OK); - } - - flags = acpi_os_acquire_lock(acpi_ev_global_lock_pending_lock); - - do { - - /* Attempt to acquire the actual hardware lock */ - - ACPI_ACQUIRE_GLOBAL_LOCK(acpi_gbl_FACS, acquired); - if (acquired) { - acpi_gbl_global_lock_acquired = TRUE; - - ACPI_DEBUG_PRINT((ACPI_DB_EXEC, - "Acquired hardware Global Lock\n")); - break; - } - - acpi_ev_global_lock_pending = TRUE; - - acpi_os_release_lock(acpi_ev_global_lock_pending_lock, flags); - - /* - * Did not get the lock. The pending bit was set above, and we - * must wait until we get the global lock released interrupt. - */ - ACPI_DEBUG_PRINT((ACPI_DB_EXEC, - "Waiting for hardware Global Lock\n")); - - /* - * Wait for handshake with the global lock interrupt handler. - * This interface releases the interpreter if we must wait. - */ - status = acpi_ex_system_wait_semaphore( - acpi_gbl_global_lock_semaphore, - ACPI_WAIT_FOREVER); - - flags = acpi_os_acquire_lock(acpi_ev_global_lock_pending_lock); - - } while (ACPI_SUCCESS(status)); - - acpi_ev_global_lock_pending = FALSE; - - acpi_os_release_lock(acpi_ev_global_lock_pending_lock, flags); - - return_ACPI_STATUS(status); -} - -/******************************************************************************* - * - * FUNCTION: acpi_ev_release_global_lock - * - * PARAMETERS: None - * - * RETURN: Status - * - * DESCRIPTION: Releases ownership of the Global Lock. - * - ******************************************************************************/ - -acpi_status acpi_ev_release_global_lock(void) -{ - u8 pending = FALSE; - acpi_status status = AE_OK; - - ACPI_FUNCTION_TRACE(ev_release_global_lock); - - /* Lock must be already acquired */ - - if (!acpi_gbl_global_lock_acquired) { - ACPI_WARNING((AE_INFO, - "Cannot release the ACPI Global Lock, it has not been acquired")); - return_ACPI_STATUS(AE_NOT_ACQUIRED); - } - - acpi_ev_global_lock_acquired--; - if (acpi_ev_global_lock_acquired > 0) { - return AE_OK; - } - - if (acpi_gbl_global_lock_present) { - - /* Allow any thread to release the lock */ - - ACPI_RELEASE_GLOBAL_LOCK(acpi_gbl_FACS, pending); - - /* - * If the pending bit was set, we must write GBL_RLS to the control - * register - */ - if (pending) { - status = - acpi_write_bit_register - (ACPI_BITREG_GLOBAL_LOCK_RELEASE, - ACPI_ENABLE_EVENT); - } - - ACPI_DEBUG_PRINT((ACPI_DB_EXEC, - "Released hardware Global Lock\n")); - } - - acpi_gbl_global_lock_acquired = FALSE; - - /* Release the local GL mutex */ - acpi_ev_global_lock_thread_id = 0; - acpi_ev_global_lock_acquired = 0; - acpi_os_release_mutex(acpi_gbl_global_lock_mutex->mutex.os_mutex); - return_ACPI_STATUS(status); -} - /****************************************************************************** * * FUNCTION: acpi_ev_terminate diff --git a/drivers/acpi/acpica/evregion.c b/drivers/acpi/acpica/evregion.c index bea7223d7a71..f0edf5c43c03 100644 --- a/drivers/acpi/acpica/evregion.c +++ b/drivers/acpi/acpica/evregion.c @@ -55,6 +55,8 @@ static u8 acpi_ev_has_default_handler(struct acpi_namespace_node *node, acpi_adr_space_type space_id); +static void acpi_ev_orphan_ec_reg_method(void); + static acpi_status acpi_ev_reg_run(acpi_handle obj_handle, u32 level, void *context, void **return_value); @@ -561,7 +563,9 @@ acpi_ev_detach_region(union acpi_operand_object *region_obj, /* Now stop region accesses by executing the _REG method */ - status = acpi_ev_execute_reg_method(region_obj, 0); + status = + acpi_ev_execute_reg_method(region_obj, + ACPI_REG_DISCONNECT); if (ACPI_FAILURE(status)) { ACPI_EXCEPTION((AE_INFO, status, "from region _REG, [%s]", @@ -1062,6 +1066,12 @@ acpi_ev_execute_reg_methods(struct acpi_namespace_node *node, ACPI_NS_WALK_UNLOCK, acpi_ev_reg_run, NULL, &space_id, NULL); + /* Special case for EC: handle "orphan" _REG methods with no region */ + + if (space_id == ACPI_ADR_SPACE_EC) { + acpi_ev_orphan_ec_reg_method(); + } + return_ACPI_STATUS(status); } @@ -1120,6 +1130,113 @@ acpi_ev_reg_run(acpi_handle obj_handle, return (AE_OK); } - status = acpi_ev_execute_reg_method(obj_desc, 1); + status = acpi_ev_execute_reg_method(obj_desc, ACPI_REG_CONNECT); return (status); } + +/******************************************************************************* + * + * FUNCTION: acpi_ev_orphan_ec_reg_method + * + * PARAMETERS: None + * + * RETURN: None + * + * DESCRIPTION: Execute an "orphan" _REG method that appears under the EC + * device. This is a _REG method that has no corresponding region + * within the EC device scope. The orphan _REG method appears to + * have been enabled by the description of the ECDT in the ACPI + * specification: "The availability of the region space can be + * detected by providing a _REG method object underneath the + * Embedded Controller device." + * + * To quickly access the EC device, we use the EC_ID that appears + * within the ECDT. Otherwise, we would need to perform a time- + * consuming namespace walk, executing _HID methods to find the + * EC device. + * + ******************************************************************************/ + +static void acpi_ev_orphan_ec_reg_method(void) +{ + struct acpi_table_ecdt *table; + acpi_status status; + struct acpi_object_list args; + union acpi_object objects[2]; + struct acpi_namespace_node *ec_device_node; + struct acpi_namespace_node *reg_method; + struct acpi_namespace_node *next_node; + + ACPI_FUNCTION_TRACE(ev_orphan_ec_reg_method); + + /* Get the ECDT (if present in system) */ + + status = acpi_get_table(ACPI_SIG_ECDT, 0, + ACPI_CAST_INDIRECT_PTR(struct acpi_table_header, + &table)); + if (ACPI_FAILURE(status)) { + return_VOID; + } + + /* We need a valid EC_ID string */ + + if (!(*table->id)) { + return_VOID; + } + + /* Namespace is currently locked, must release */ + + (void)acpi_ut_release_mutex(ACPI_MTX_NAMESPACE); + + /* Get a handle to the EC device referenced in the ECDT */ + + status = acpi_get_handle(NULL, + ACPI_CAST_PTR(char, table->id), + ACPI_CAST_PTR(acpi_handle, &ec_device_node)); + if (ACPI_FAILURE(status)) { + goto exit; + } + + /* Get a handle to a _REG method immediately under the EC device */ + + status = acpi_get_handle(ec_device_node, + METHOD_NAME__REG, ACPI_CAST_PTR(acpi_handle, + ®_method)); + if (ACPI_FAILURE(status)) { + goto exit; + } + + /* + * Execute the _REG method only if there is no Operation Region in + * this scope with the Embedded Controller space ID. Otherwise, it + * will already have been executed. Note, this allows for Regions + * with other space IDs to be present; but the code below will then + * execute the _REG method with the EC space ID argument. + */ + next_node = acpi_ns_get_next_node(ec_device_node, NULL); + while (next_node) { + if ((next_node->type == ACPI_TYPE_REGION) && + (next_node->object) && + (next_node->object->region.space_id == ACPI_ADR_SPACE_EC)) { + goto exit; /* Do not execute _REG */ + } + next_node = acpi_ns_get_next_node(ec_device_node, next_node); + } + + /* Evaluate the _REG(EC,Connect) method */ + + args.count = 2; + args.pointer = objects; + objects[0].type = ACPI_TYPE_INTEGER; + objects[0].integer.value = ACPI_ADR_SPACE_EC; + objects[1].type = ACPI_TYPE_INTEGER; + objects[1].integer.value = ACPI_REG_CONNECT; + + status = acpi_evaluate_object(reg_method, NULL, &args, NULL); + + exit: + /* We ignore all errors from above, don't care */ + + status = acpi_ut_acquire_mutex(ACPI_MTX_NAMESPACE); + return_VOID; +} diff --git a/drivers/acpi/acpica/evrgnini.c b/drivers/acpi/acpica/evrgnini.c index 9659cee6093e..55a5d35ef34a 100644 --- a/drivers/acpi/acpica/evrgnini.c +++ b/drivers/acpi/acpica/evrgnini.c @@ -637,7 +637,7 @@ acpi_ev_initialize_region(union acpi_operand_object *region_obj, status = acpi_ev_execute_reg_method - (region_obj, 1); + (region_obj, ACPI_REG_CONNECT); if (acpi_ns_locked) { status = diff --git a/drivers/acpi/acpica/evxfregn.c b/drivers/acpi/acpica/evxfregn.c index c85c8c45599d..00cd95692a91 100644 --- a/drivers/acpi/acpica/evxfregn.c +++ b/drivers/acpi/acpica/evxfregn.c @@ -130,20 +130,21 @@ acpi_install_address_space_handler(acpi_handle device, case ACPI_ADR_SPACE_PCI_CONFIG: case ACPI_ADR_SPACE_DATA_TABLE: - if (acpi_gbl_reg_methods_executed) { + if (!acpi_gbl_reg_methods_executed) { - /* Run all _REG methods for this address space */ - - status = acpi_ev_execute_reg_methods(node, space_id); + /* We will defer execution of the _REG methods for this space */ + goto unlock_and_exit; } break; default: - - status = acpi_ev_execute_reg_methods(node, space_id); break; } + /* Run all _REG methods for this address space */ + + status = acpi_ev_execute_reg_methods(node, space_id); + unlock_and_exit: (void)acpi_ut_release_mutex(ACPI_MTX_NAMESPACE); return_ACPI_STATUS(status); diff --git a/drivers/acpi/acpica/excreate.c b/drivers/acpi/acpica/excreate.c index e7b372d17667..110711afada8 100644 --- a/drivers/acpi/acpica/excreate.c +++ b/drivers/acpi/acpica/excreate.c @@ -305,7 +305,8 @@ acpi_ex_create_region(u8 * aml_start, * range */ if ((region_space >= ACPI_NUM_PREDEFINED_REGIONS) && - (region_space < ACPI_USER_REGION_BEGIN)) { + (region_space < ACPI_USER_REGION_BEGIN) && + (region_space != ACPI_ADR_SPACE_DATA_TABLE)) { ACPI_ERROR((AE_INFO, "Invalid AddressSpace type 0x%X", region_space)); return_ACPI_STATUS(AE_AML_INVALID_SPACE_ID); diff --git a/drivers/acpi/acpica/nsrepair.c b/drivers/acpi/acpica/nsrepair.c index 1d76ac85b5e7..ac7b854b0bd7 100644 --- a/drivers/acpi/acpica/nsrepair.c +++ b/drivers/acpi/acpica/nsrepair.c @@ -74,7 +74,6 @@ ACPI_MODULE_NAME("nsrepair") * * Additional possible repairs: * - * Optional/unnecessary NULL package elements removed * Required package elements that are NULL replaced by Integer/String/Buffer * Incorrect standalone package wrapped with required outer package * @@ -623,16 +622,12 @@ acpi_ns_remove_null_elements(struct acpi_predefined_data *data, ACPI_FUNCTION_NAME(ns_remove_null_elements); /* - * PTYPE1 packages contain no subpackages. - * PTYPE2 packages contain a variable number of sub-packages. We can - * safely remove all NULL elements from the PTYPE2 packages. + * We can safely remove all NULL elements from these package types: + * PTYPE1_VAR packages contain a variable number of simple data types. + * PTYPE2 packages contain a variable number of sub-packages. */ switch (package_type) { - case ACPI_PTYPE1_FIXED: case ACPI_PTYPE1_VAR: - case ACPI_PTYPE1_OPTION: - return; - case ACPI_PTYPE2: case ACPI_PTYPE2_COUNT: case ACPI_PTYPE2_PKG_COUNT: @@ -642,6 +637,8 @@ acpi_ns_remove_null_elements(struct acpi_predefined_data *data, break; default: + case ACPI_PTYPE1_FIXED: + case ACPI_PTYPE1_OPTION: return; } diff --git a/drivers/acpi/acpica/utdecode.c b/drivers/acpi/acpica/utdecode.c index 136a814cec69..97cb36f85ce9 100644 --- a/drivers/acpi/acpica/utdecode.c +++ b/drivers/acpi/acpica/utdecode.c @@ -170,8 +170,7 @@ const char *acpi_gbl_region_types[ACPI_NUM_PREDEFINED_REGIONS] = { "SMBus", "SystemCMOS", "PCIBARTarget", - "IPMI", - "DataTable" + "IPMI" }; char *acpi_ut_get_region_name(u8 space_id) @@ -179,6 +178,8 @@ char *acpi_ut_get_region_name(u8 space_id) if (space_id >= ACPI_USER_REGION_BEGIN) { return ("UserDefinedRegion"); + } else if (space_id == ACPI_ADR_SPACE_DATA_TABLE) { + return ("DataTable"); } else if (space_id == ACPI_ADR_SPACE_FIXED_HARDWARE) { return ("FunctionalFixedHW"); } else if (space_id >= ACPI_NUM_PREDEFINED_REGIONS) { diff --git a/drivers/acpi/acpica/utmutex.c b/drivers/acpi/acpica/utmutex.c index a946c689f03b..7d797e2baecd 100644 --- a/drivers/acpi/acpica/utmutex.c +++ b/drivers/acpi/acpica/utmutex.c @@ -83,9 +83,15 @@ acpi_status acpi_ut_mutex_initialize(void) /* Create the spinlocks for use at interrupt level */ - spin_lock_init(acpi_gbl_gpe_lock); - spin_lock_init(acpi_gbl_hardware_lock); - spin_lock_init(acpi_ev_global_lock_pending_lock); + status = acpi_os_create_lock (&acpi_gbl_gpe_lock); + if (ACPI_FAILURE (status)) { + return_ACPI_STATUS (status); + } + + status = acpi_os_create_lock (&acpi_gbl_hardware_lock); + if (ACPI_FAILURE (status)) { + return_ACPI_STATUS (status); + } /* Mutex for _OSI support */ status = acpi_os_create_mutex(&acpi_gbl_osi_mutex); diff --git a/drivers/acpi/apei/einj.c b/drivers/acpi/apei/einj.c index 096aebfe7f32..f74b2ea11f21 100644 --- a/drivers/acpi/apei/einj.c +++ b/drivers/acpi/apei/einj.c @@ -101,6 +101,14 @@ static DEFINE_MUTEX(einj_mutex); static struct einj_parameter *einj_param; +#ifndef writeq +static inline void writeq(__u64 val, volatile void __iomem *addr) +{ + writel(val, addr); + writel(val >> 32, addr+4); +} +#endif + static void einj_exec_ctx_init(struct apei_exec_context *ctx) { apei_exec_ctx_init(ctx, einj_ins_type, ARRAY_SIZE(einj_ins_type), diff --git a/drivers/acpi/atomicio.c b/drivers/acpi/atomicio.c index 542e53903891..7489b89c300f 100644 --- a/drivers/acpi/atomicio.c +++ b/drivers/acpi/atomicio.c @@ -280,9 +280,11 @@ static int acpi_atomic_read_mem(u64 paddr, u64 *val, u32 width) case 32: *val = readl(addr); break; +#ifdef readq case 64: *val = readq(addr); break; +#endif default: return -EINVAL; } @@ -307,9 +309,11 @@ static int acpi_atomic_write_mem(u64 paddr, u64 val, u32 width) case 32: writel(val, addr); break; +#ifdef writeq case 64: writeq(val, addr); break; +#endif default: return -EINVAL; } diff --git a/drivers/acpi/bus.c b/drivers/acpi/bus.c index 9749980ca6ca..d1e06c182cdb 100644 --- a/drivers/acpi/bus.c +++ b/drivers/acpi/bus.c @@ -227,7 +227,7 @@ static int __acpi_bus_set_power(struct acpi_device *device, int state) acpi_status status = AE_OK; char object_name[5] = { '_', 'P', 'S', '0' + state, '\0' }; - if (!device || (state < ACPI_STATE_D0) || (state > ACPI_STATE_D3)) + if (!device || (state < ACPI_STATE_D0) || (state > ACPI_STATE_D3_COLD)) return -EINVAL; /* Make sure this is a valid target state */ diff --git a/drivers/acpi/custom_method.c b/drivers/acpi/custom_method.c new file mode 100644 index 000000000000..5d42c2414ae5 --- /dev/null +++ b/drivers/acpi/custom_method.c @@ -0,0 +1,100 @@ +/* + * debugfs.c - ACPI debugfs interface to userspace. + */ + +#include <linux/init.h> +#include <linux/module.h> +#include <linux/kernel.h> +#include <linux/uaccess.h> +#include <linux/debugfs.h> +#include <acpi/acpi_drivers.h> + +#include "internal.h" + +#define _COMPONENT ACPI_SYSTEM_COMPONENT +ACPI_MODULE_NAME("custom_method"); +MODULE_LICENSE("GPL"); + +static struct dentry *cm_dentry; + +/* /sys/kernel/debug/acpi/custom_method */ + +static ssize_t cm_write(struct file *file, const char __user * user_buf, + size_t count, loff_t *ppos) +{ + static char *buf; + static u32 max_size; + static u32 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 = max_size = table.length; + buf = kzalloc(max_size, GFP_KERNEL); + if (!buf) + return -ENOMEM; + } + + if (buf == NULL) + return -EINVAL; + + if ((*ppos > max_size) || + (*ppos + count > max_size) || + (*ppos + count < count) || + (count > uncopied_bytes)) + return -EINVAL; + + if (copy_from_user(buf + (*ppos), user_buf, count)) { + kfree(buf); + buf = NULL; + return -EFAULT; + } + + uncopied_bytes -= count; + *ppos += count; + + if (!uncopied_bytes) { + status = acpi_install_method(buf); + kfree(buf); + buf = NULL; + if (ACPI_FAILURE(status)) + return -EINVAL; + add_taint(TAINT_OVERRIDDEN_ACPI_TABLE); + } + + return count; +} + +static const struct file_operations cm_fops = { + .write = cm_write, + .llseek = default_llseek, +}; + +static int __init acpi_custom_method_init(void) +{ + if (acpi_debugfs_dir == NULL) + return -ENOENT; + + cm_dentry = debugfs_create_file("custom_method", S_IWUSR, + acpi_debugfs_dir, NULL, &cm_fops); + if (cm_dentry == NULL) + return -ENODEV; + + return 0; +} + +static void __exit acpi_custom_method_exit(void) +{ + if (cm_dentry) + debugfs_remove(cm_dentry); + } + +module_init(acpi_custom_method_init); +module_exit(acpi_custom_method_exit); diff --git a/drivers/acpi/debugfs.c b/drivers/acpi/debugfs.c index 384f7abcff77..182a9fc36355 100644 --- a/drivers/acpi/debugfs.c +++ b/drivers/acpi/debugfs.c @@ -3,100 +3,16 @@ */ #include <linux/init.h> -#include <linux/module.h> -#include <linux/kernel.h> -#include <linux/uaccess.h> #include <linux/debugfs.h> #include <acpi/acpi_drivers.h> #define _COMPONENT ACPI_SYSTEM_COMPONENT ACPI_MODULE_NAME("debugfs"); +struct dentry *acpi_debugfs_dir; +EXPORT_SYMBOL_GPL(acpi_debugfs_dir); -/* /sys/modules/acpi/parameters/aml_debug_output */ - -module_param_named(aml_debug_output, acpi_gbl_enable_aml_debug_object, - bool, 0644); -MODULE_PARM_DESC(aml_debug_output, - "To enable/disable the ACPI Debug Object output."); - -/* /sys/kernel/debug/acpi/custom_method */ - -static ssize_t cm_write(struct file *file, const char __user * user_buf, - size_t count, loff_t *ppos) +void __init acpi_debugfs_init(void) { - static char *buf; - static u32 max_size; - static u32 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 = max_size = table.length; - buf = kzalloc(max_size, GFP_KERNEL); - if (!buf) - return -ENOMEM; - } - - if (buf == NULL) - return -EINVAL; - - if ((*ppos > max_size) || - (*ppos + count > max_size) || - (*ppos + count < count) || - (count > uncopied_bytes)) - return -EINVAL; - - if (copy_from_user(buf + (*ppos), user_buf, count)) { - kfree(buf); - buf = NULL; - return -EFAULT; - } - - uncopied_bytes -= count; - *ppos += count; - - if (!uncopied_bytes) { - status = acpi_install_method(buf); - kfree(buf); - buf = NULL; - if (ACPI_FAILURE(status)) - return -EINVAL; - add_taint(TAINT_OVERRIDDEN_ACPI_TABLE); - } - - return count; -} - -static const struct file_operations cm_fops = { - .write = cm_write, - .llseek = default_llseek, -}; - -int __init 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_IWUSR, - acpi_dir, NULL, &cm_fops); - if (!cm_dentry) - goto err; - - return 0; - -err: - if (acpi_dir) - debugfs_remove(acpi_dir); - return -EINVAL; + acpi_debugfs_dir = debugfs_create_dir("acpi", NULL); } diff --git a/drivers/acpi/ec.c b/drivers/acpi/ec.c index fa848c4116a8..b19a18dd994f 100644 --- a/drivers/acpi/ec.c +++ b/drivers/acpi/ec.c @@ -69,7 +69,6 @@ enum ec_command { #define ACPI_EC_DELAY 500 /* Wait 500ms max. during EC ops */ #define ACPI_EC_UDELAY_GLK 1000 /* Wait 1ms max. to get global lock */ -#define ACPI_EC_CDELAY 10 /* Wait 10us before polling EC */ #define ACPI_EC_MSI_UDELAY 550 /* Wait 550us for MSI EC */ #define ACPI_EC_STORM_THRESHOLD 8 /* number of false interrupts @@ -433,8 +432,7 @@ EXPORT_SYMBOL(ec_write); int ec_transaction(u8 command, const u8 * wdata, unsigned wdata_len, - u8 * rdata, unsigned rdata_len, - int force_poll) + u8 * rdata, unsigned rdata_len) { struct transaction t = {.command = command, .wdata = wdata, .rdata = rdata, @@ -592,8 +590,6 @@ static void acpi_ec_gpe_query(void *ec_cxt) mutex_unlock(&ec->lock); } -static void acpi_ec_gpe_query(void *ec_cxt); - static int ec_check_sci(struct acpi_ec *ec, u8 state) { if (state & ACPI_EC_FLAG_SCI) { @@ -808,8 +804,6 @@ static int acpi_ec_add(struct acpi_device *device) return -EINVAL; } - ec->handle = device->handle; - /* Find and register all query methods */ acpi_walk_namespace(ACPI_TYPE_METHOD, ec->handle, 1, acpi_ec_register_query_methods, NULL, ec, NULL); @@ -938,8 +932,19 @@ static struct dmi_system_id __initdata ec_dmi_table[] = { ec_flag_msi, "MSI hardware", { DMI_MATCH(DMI_CHASSIS_VENDOR, "MICRO-STAR")}, NULL}, { + ec_flag_msi, "Quanta hardware", { + DMI_MATCH(DMI_SYS_VENDOR, "Quanta"), + DMI_MATCH(DMI_PRODUCT_NAME, "TW8/SW8/DW8"),}, NULL}, + { + ec_flag_msi, "Quanta hardware", { + DMI_MATCH(DMI_SYS_VENDOR, "Quanta"), + DMI_MATCH(DMI_PRODUCT_NAME, "TW9/SW9"),}, NULL}, + { ec_validate_ecdt, "ASUS hardware", { DMI_MATCH(DMI_BIOS_VENDOR, "ASUS") }, NULL}, + { + ec_validate_ecdt, "ASUS hardware", { + DMI_MATCH(DMI_BOARD_VENDOR, "ASUSTeK Computer Inc.") }, NULL}, {}, }; diff --git a/drivers/acpi/internal.h b/drivers/acpi/internal.h index 4bfb759deb10..ca75b9ce0489 100644 --- a/drivers/acpi/internal.h +++ b/drivers/acpi/internal.h @@ -28,9 +28,10 @@ int acpi_scan_init(void); int acpi_sysfs_init(void); #ifdef CONFIG_DEBUG_FS +extern struct dentry *acpi_debugfs_dir; int acpi_debugfs_init(void); #else -static inline int acpi_debugfs_init(void) { return 0; } +static inline void acpi_debugfs_init(void) { return; } #endif /* -------------------------------------------------------------------------- diff --git a/drivers/acpi/osl.c b/drivers/acpi/osl.c index 45ad4ffef533..52ca9649d769 100644 --- a/drivers/acpi/osl.c +++ b/drivers/acpi/osl.c @@ -902,14 +902,6 @@ void acpi_os_wait_events_complete(void *context) EXPORT_SYMBOL(acpi_os_wait_events_complete); -/* - * Deallocate the memory for a spinlock. - */ -void acpi_os_delete_lock(acpi_spinlock handle) -{ - return; -} - acpi_status acpi_os_create_semaphore(u32 max_units, u32 initial_units, acpi_handle * handle) { @@ -1341,6 +1333,31 @@ int acpi_resources_are_enforced(void) EXPORT_SYMBOL(acpi_resources_are_enforced); /* + * Create and initialize a spinlock. + */ +acpi_status +acpi_os_create_lock(acpi_spinlock *out_handle) +{ + spinlock_t *lock; + + lock = ACPI_ALLOCATE(sizeof(spinlock_t)); + if (!lock) + return AE_NO_MEMORY; + spin_lock_init(lock); + *out_handle = lock; + + return AE_OK; +} + +/* + * Deallocate the memory for a spinlock. + */ +void acpi_os_delete_lock(acpi_spinlock handle) +{ + ACPI_FREE(handle); +} + +/* * Acquire a spinlock. * * handle is a pointer to the spinlock_t. diff --git a/drivers/acpi/pci_root.c b/drivers/acpi/pci_root.c index f911a2f8cc34..d06078d660ad 100644 --- a/drivers/acpi/pci_root.c +++ b/drivers/acpi/pci_root.c @@ -596,12 +596,18 @@ static int __devinit acpi_pci_root_add(struct acpi_device *device) dev_info(root->bus->bridge, "ACPI _OSC control (0x%02x) granted\n", flags); } else { - dev_dbg(root->bus->bridge, - "ACPI _OSC request failed (code %d)\n", status); - printk(KERN_INFO "Unable to assume _OSC PCIe control. " - "Disabling ASPM\n"); + dev_info(root->bus->bridge, + "ACPI _OSC request failed (%s), " + "returned control mask: 0x%02x\n", + acpi_format_exception(status), flags); + pr_info("ACPI _OSC control for PCIe not granted, " + "disabling ASPM\n"); pcie_no_aspm(); } + } else { + dev_info(root->bus->bridge, + "Unable to request _OSC control " + "(_OSC support mask: 0x%02x)\n", flags); } pci_acpi_add_bus_pm_notifier(device, root->bus); diff --git a/drivers/acpi/power_meter.c b/drivers/acpi/power_meter.c deleted file mode 100644 index 66f67293341e..000000000000 --- a/drivers/acpi/power_meter.c +++ /dev/null @@ -1,1023 +0,0 @@ -/* - * A hwmon driver for ACPI 4.0 power meters - * Copyright (C) 2009 IBM - * - * Author: Darrick J. Wong <djwong@us.ibm.com> - * - * 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. 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., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA - */ - -#include <linux/module.h> -#include <linux/hwmon.h> -#include <linux/hwmon-sysfs.h> -#include <linux/jiffies.h> -#include <linux/mutex.h> -#include <linux/dmi.h> -#include <linux/slab.h> -#include <linux/kdev_t.h> -#include <linux/sched.h> -#include <linux/time.h> -#include <acpi/acpi_drivers.h> -#include <acpi/acpi_bus.h> - -#define ACPI_POWER_METER_NAME "power_meter" -ACPI_MODULE_NAME(ACPI_POWER_METER_NAME); -#define ACPI_POWER_METER_DEVICE_NAME "Power Meter" -#define ACPI_POWER_METER_CLASS "pwr_meter_resource" - -#define NUM_SENSORS 17 - -#define POWER_METER_CAN_MEASURE (1 << 0) -#define POWER_METER_CAN_TRIP (1 << 1) -#define POWER_METER_CAN_CAP (1 << 2) -#define POWER_METER_CAN_NOTIFY (1 << 3) -#define POWER_METER_IS_BATTERY (1 << 8) -#define UNKNOWN_HYSTERESIS 0xFFFFFFFF - -#define METER_NOTIFY_CONFIG 0x80 -#define METER_NOTIFY_TRIP 0x81 -#define METER_NOTIFY_CAP 0x82 -#define METER_NOTIFY_CAPPING 0x83 -#define METER_NOTIFY_INTERVAL 0x84 - -#define POWER_AVERAGE_NAME "power1_average" -#define POWER_CAP_NAME "power1_cap" -#define POWER_AVG_INTERVAL_NAME "power1_average_interval" -#define POWER_ALARM_NAME "power1_alarm" - -static int cap_in_hardware; -static int force_cap_on; - -static int can_cap_in_hardware(void) -{ - return force_cap_on || cap_in_hardware; -} - -static const struct acpi_device_id power_meter_ids[] = { - {"ACPI000D", 0}, - {"", 0}, -}; -MODULE_DEVICE_TABLE(acpi, power_meter_ids); - -struct acpi_power_meter_capabilities { - u64 flags; - u64 units; - u64 type; - u64 accuracy; - u64 sampling_time; - u64 min_avg_interval; - u64 max_avg_interval; - u64 hysteresis; - u64 configurable_cap; - u64 min_cap; - u64 max_cap; -}; - -struct acpi_power_meter_resource { - struct acpi_device *acpi_dev; - acpi_bus_id name; - struct mutex lock; - struct device *hwmon_dev; - struct acpi_power_meter_capabilities caps; - acpi_string model_number; - acpi_string serial_number; - acpi_string oem_info; - u64 power; - u64 cap; - u64 avg_interval; - int sensors_valid; - unsigned long sensors_last_updated; - struct sensor_device_attribute sensors[NUM_SENSORS]; - int num_sensors; - int trip[2]; - int num_domain_devices; - struct acpi_device **domain_devices; - struct kobject *holders_dir; -}; - -struct ro_sensor_template { - char *label; - ssize_t (*show)(struct device *dev, - struct device_attribute *devattr, - char *buf); - int index; -}; - -struct rw_sensor_template { - char *label; - ssize_t (*show)(struct device *dev, - struct device_attribute *devattr, - char *buf); - ssize_t (*set)(struct device *dev, - struct device_attribute *devattr, - const char *buf, size_t count); - int index; -}; - -/* Averaging interval */ -static int update_avg_interval(struct acpi_power_meter_resource *resource) -{ - unsigned long long data; - acpi_status status; - - status = acpi_evaluate_integer(resource->acpi_dev->handle, "_GAI", - NULL, &data); - if (ACPI_FAILURE(status)) { - ACPI_EXCEPTION((AE_INFO, status, "Evaluating _GAI")); - return -ENODEV; - } - - resource->avg_interval = data; - return 0; -} - -static ssize_t show_avg_interval(struct device *dev, - struct device_attribute *devattr, - char *buf) -{ - struct acpi_device *acpi_dev = to_acpi_device(dev); - struct acpi_power_meter_resource *resource = acpi_dev->driver_data; - - mutex_lock(&resource->lock); - update_avg_interval(resource); - mutex_unlock(&resource->lock); - - return sprintf(buf, "%llu\n", resource->avg_interval); -} - -static ssize_t set_avg_interval(struct device *dev, - struct device_attribute *devattr, - const char *buf, size_t count) -{ - struct acpi_device *acpi_dev = to_acpi_device(dev); - struct acpi_power_meter_resource *resource = acpi_dev->driver_data; - union acpi_object arg0 = { ACPI_TYPE_INTEGER }; - struct acpi_object_list args = { 1, &arg0 }; - int res; - unsigned long temp; - unsigned long long data; - acpi_status status; - - res = strict_strtoul(buf, 10, &temp); - if (res) - return res; - - if (temp > resource->caps.max_avg_interval || - temp < resource->caps.min_avg_interval) - return -EINVAL; - arg0.integer.value = temp; - - mutex_lock(&resource->lock); - status = acpi_evaluate_integer(resource->acpi_dev->handle, "_PAI", - &args, &data); - if (!ACPI_FAILURE(status)) - resource->avg_interval = temp; - mutex_unlock(&resource->lock); - - if (ACPI_FAILURE(status)) { - ACPI_EXCEPTION((AE_INFO, status, "Evaluating _PAI")); - return -EINVAL; - } - - /* _PAI returns 0 on success, nonzero otherwise */ - if (data) - return -EINVAL; - - return count; -} - -/* Cap functions */ -static int update_cap(struct acpi_power_meter_resource *resource) -{ - unsigned long long data; - acpi_status status; - - status = acpi_evaluate_integer(resource->acpi_dev->handle, "_GHL", - NULL, &data); - if (ACPI_FAILURE(status)) { - ACPI_EXCEPTION((AE_INFO, status, "Evaluating _GHL")); - return -ENODEV; - } - - resource->cap = data; - return 0; -} - -static ssize_t show_cap(struct device *dev, - struct device_attribute *devattr, - char *buf) -{ - struct acpi_device *acpi_dev = to_acpi_device(dev); - struct acpi_power_meter_resource *resource = acpi_dev->driver_data; - - mutex_lock(&resource->lock); - update_cap(resource); - mutex_unlock(&resource->lock); - - return sprintf(buf, "%llu\n", resource->cap * 1000); -} - -static ssize_t set_cap(struct device *dev, struct device_attribute *devattr, - const char *buf, size_t count) -{ - struct acpi_device *acpi_dev = to_acpi_device(dev); - struct acpi_power_meter_resource *resource = acpi_dev->driver_data; - union acpi_object arg0 = { ACPI_TYPE_INTEGER }; - struct acpi_object_list args = { 1, &arg0 }; - int res; - unsigned long temp; - unsigned long long data; - acpi_status status; - - res = strict_strtoul(buf, 10, &temp); - if (res) - return res; - - temp /= 1000; - if (temp > resource->caps.max_cap || temp < resource->caps.min_cap) - return -EINVAL; - arg0.integer.value = temp; - - mutex_lock(&resource->lock); - status = acpi_evaluate_integer(resource->acpi_dev->handle, "_SHL", - &args, &data); - if (!ACPI_FAILURE(status)) - resource->cap = temp; - mutex_unlock(&resource->lock); - - if (ACPI_FAILURE(status)) { - ACPI_EXCEPTION((AE_INFO, status, "Evaluating _SHL")); - return -EINVAL; - } - - /* _SHL returns 0 on success, nonzero otherwise */ - if (data) - return -EINVAL; - - return count; -} - -/* Power meter trip points */ -static int set_acpi_trip(struct acpi_power_meter_resource *resource) -{ - union acpi_object arg_objs[] = { - {ACPI_TYPE_INTEGER}, - {ACPI_TYPE_INTEGER} - }; - struct acpi_object_list args = { 2, arg_objs }; - unsigned long long data; - acpi_status status; - - /* Both trip levels must be set */ - if (resource->trip[0] < 0 || resource->trip[1] < 0) - return 0; - - /* This driver stores min, max; ACPI wants max, min. */ - arg_objs[0].integer.value = resource->trip[1]; - arg_objs[1].integer.value = resource->trip[0]; - - status = acpi_evaluate_integer(resource->acpi_dev->handle, "_PTP", - &args, &data); - if (ACPI_FAILURE(status)) { - ACPI_EXCEPTION((AE_INFO, status, "Evaluating _PTP")); - return -EINVAL; - } - - /* _PTP returns 0 on success, nonzero otherwise */ - if (data) - return -EINVAL; - - return 0; -} - -static ssize_t set_trip(struct device *dev, struct device_attribute *devattr, - const char *buf, size_t count) -{ - struct sensor_device_attribute *attr = to_sensor_dev_attr(devattr); - struct acpi_device *acpi_dev = to_acpi_device(dev); - struct acpi_power_meter_resource *resource = acpi_dev->driver_data; - int res; - unsigned long temp; - - res = strict_strtoul(buf, 10, &temp); - if (res) - return res; - - temp /= 1000; - if (temp < 0) - return -EINVAL; - - mutex_lock(&resource->lock); - resource->trip[attr->index - 7] = temp; - res = set_acpi_trip(resource); - mutex_unlock(&resource->lock); - - if (res) - return res; - - return count; -} - -/* Power meter */ -static int update_meter(struct acpi_power_meter_resource *resource) -{ - unsigned long long data; - acpi_status status; - unsigned long local_jiffies = jiffies; - - if (time_before(local_jiffies, resource->sensors_last_updated + - msecs_to_jiffies(resource->caps.sampling_time)) && - resource->sensors_valid) - return 0; - - status = acpi_evaluate_integer(resource->acpi_dev->handle, "_PMM", - NULL, &data); - if (ACPI_FAILURE(status)) { - ACPI_EXCEPTION((AE_INFO, status, "Evaluating _PMM")); - return -ENODEV; - } - - resource->power = data; - resource->sensors_valid = 1; - resource->sensors_last_updated = jiffies; - return 0; -} - -static ssize_t show_power(struct device *dev, - struct device_attribute *devattr, - char *buf) -{ - struct acpi_device *acpi_dev = to_acpi_device(dev); - struct acpi_power_meter_resource *resource = acpi_dev->driver_data; - - mutex_lock(&resource->lock); - update_meter(resource); - mutex_unlock(&resource->lock); - - return sprintf(buf, "%llu\n", resource->power * 1000); -} - -/* Miscellaneous */ -static ssize_t show_str(struct device *dev, - struct device_attribute *devattr, - char *buf) -{ - struct sensor_device_attribute *attr = to_sensor_dev_attr(devattr); - struct acpi_device *acpi_dev = to_acpi_device(dev); - struct acpi_power_meter_resource *resource = acpi_dev->driver_data; - acpi_string val; - - switch (attr->index) { - case 0: - val = resource->model_number; - break; - case 1: - val = resource->serial_number; - break; - case 2: - val = resource->oem_info; - break; - default: - BUG(); - } - - return sprintf(buf, "%s\n", val); -} - -static ssize_t show_val(struct device *dev, - struct device_attribute *devattr, - char *buf) -{ - struct sensor_device_attribute *attr = to_sensor_dev_attr(devattr); - struct acpi_device *acpi_dev = to_acpi_device(dev); - struct acpi_power_meter_resource *resource = acpi_dev->driver_data; - u64 val = 0; - - switch (attr->index) { - case 0: - val = resource->caps.min_avg_interval; - break; - case 1: - val = resource->caps.max_avg_interval; - break; - case 2: - val = resource->caps.min_cap * 1000; - break; - case 3: - val = resource->caps.max_cap * 1000; - break; - case 4: - if (resource->caps.hysteresis == UNKNOWN_HYSTERESIS) - return sprintf(buf, "unknown\n"); - - val = resource->caps.hysteresis * 1000; - break; - case 5: - if (resource->caps.flags & POWER_METER_IS_BATTERY) - val = 1; - else - val = 0; - break; - case 6: - if (resource->power > resource->cap) - val = 1; - else - val = 0; - break; - case 7: - case 8: - if (resource->trip[attr->index - 7] < 0) - return sprintf(buf, "unknown\n"); - - val = resource->trip[attr->index - 7] * 1000; - break; - default: - BUG(); - } - - return sprintf(buf, "%llu\n", val); -} - -static ssize_t show_accuracy(struct device *dev, - struct device_attribute *devattr, - char *buf) -{ - struct acpi_device *acpi_dev = to_acpi_device(dev); - struct acpi_power_meter_resource *resource = acpi_dev->driver_data; - unsigned int acc = resource->caps.accuracy; - - return sprintf(buf, "%u.%u%%\n", acc / 1000, acc % 1000); -} - -static ssize_t show_name(struct device *dev, - struct device_attribute *devattr, - char *buf) -{ - return sprintf(buf, "%s\n", ACPI_POWER_METER_NAME); -} - -/* Sensor descriptions. If you add a sensor, update NUM_SENSORS above! */ -static struct ro_sensor_template meter_ro_attrs[] = { -{POWER_AVERAGE_NAME, show_power, 0}, -{"power1_accuracy", show_accuracy, 0}, -{"power1_average_interval_min", show_val, 0}, -{"power1_average_interval_max", show_val, 1}, -{"power1_is_battery", show_val, 5}, -{NULL, NULL, 0}, -}; - -static struct rw_sensor_template meter_rw_attrs[] = { -{POWER_AVG_INTERVAL_NAME, show_avg_interval, set_avg_interval, 0}, -{NULL, NULL, NULL, 0}, -}; - -static struct ro_sensor_template misc_cap_attrs[] = { -{"power1_cap_min", show_val, 2}, -{"power1_cap_max", show_val, 3}, -{"power1_cap_hyst", show_val, 4}, -{POWER_ALARM_NAME, show_val, 6}, -{NULL, NULL, 0}, -}; - -static struct ro_sensor_template ro_cap_attrs[] = { -{POWER_CAP_NAME, show_cap, 0}, -{NULL, NULL, 0}, -}; - -static struct rw_sensor_template rw_cap_attrs[] = { -{POWER_CAP_NAME, show_cap, set_cap, 0}, -{NULL, NULL, NULL, 0}, -}; - -static struct rw_sensor_template trip_attrs[] = { -{"power1_average_min", show_val, set_trip, 7}, -{"power1_average_max", show_val, set_trip, 8}, -{NULL, NULL, NULL, 0}, -}; - -static struct ro_sensor_template misc_attrs[] = { -{"name", show_name, 0}, -{"power1_model_number", show_str, 0}, -{"power1_oem_info", show_str, 2}, -{"power1_serial_number", show_str, 1}, -{NULL, NULL, 0}, -}; - -/* Read power domain data */ -static void remove_domain_devices(struct acpi_power_meter_resource *resource) -{ - int i; - - if (!resource->num_domain_devices) - return; - - for (i = 0; i < resource->num_domain_devices; i++) { - struct acpi_device *obj = resource->domain_devices[i]; - if (!obj) - continue; - - sysfs_remove_link(resource->holders_dir, - kobject_name(&obj->dev.kobj)); - put_device(&obj->dev); - } - - kfree(resource->domain_devices); - kobject_put(resource->holders_dir); - resource->num_domain_devices = 0; -} - -static int read_domain_devices(struct acpi_power_meter_resource *resource) -{ - int res = 0; - int i; - struct acpi_buffer buffer = { ACPI_ALLOCATE_BUFFER, NULL }; - union acpi_object *pss; - acpi_status status; - - status = acpi_evaluate_object(resource->acpi_dev->handle, "_PMD", NULL, - &buffer); - if (ACPI_FAILURE(status)) { - ACPI_EXCEPTION((AE_INFO, status, "Evaluating _PMD")); - return -ENODEV; - } - - pss = buffer.pointer; - if (!pss || - pss->type != ACPI_TYPE_PACKAGE) { - dev_err(&resource->acpi_dev->dev, ACPI_POWER_METER_NAME - "Invalid _PMD data\n"); - res = -EFAULT; - goto end; - } - - if (!pss->package.count) - goto end; - - resource->domain_devices = kzalloc(sizeof(struct acpi_device *) * - pss->package.count, GFP_KERNEL); - if (!resource->domain_devices) { - res = -ENOMEM; - goto end; - } - - resource->holders_dir = kobject_create_and_add("measures", - &resource->acpi_dev->dev.kobj); - if (!resource->holders_dir) { - res = -ENOMEM; - goto exit_free; - } - - resource->num_domain_devices = pss->package.count; - - for (i = 0; i < pss->package.count; i++) { - struct acpi_device *obj; - union acpi_object *element = &(pss->package.elements[i]); - - /* Refuse non-references */ - if (element->type != ACPI_TYPE_LOCAL_REFERENCE) - continue; - - /* Create a symlink to domain objects */ - resource->domain_devices[i] = NULL; - status = acpi_bus_get_device(element->reference.handle, - &resource->domain_devices[i]); - if (ACPI_FAILURE(status)) - continue; - - obj = resource->domain_devices[i]; - get_device(&obj->dev); - - res = sysfs_create_link(resource->holders_dir, &obj->dev.kobj, - kobject_name(&obj->dev.kobj)); - if (res) { - put_device(&obj->dev); - resource->domain_devices[i] = NULL; - } - } - - res = 0; - goto end; - -exit_free: - kfree(resource->domain_devices); -end: - kfree(buffer.pointer); - return res; -} - -/* Registration and deregistration */ -static int register_ro_attrs(struct acpi_power_meter_resource *resource, - struct ro_sensor_template *ro) -{ - struct device *dev = &resource->acpi_dev->dev; - struct sensor_device_attribute *sensors = - &resource->sensors[resource->num_sensors]; - int res = 0; - - while (ro->label) { - sensors->dev_attr.attr.name = ro->label; - sensors->dev_attr.attr.mode = S_IRUGO; - sensors->dev_attr.show = ro->show; - sensors->index = ro->index; - - res = device_create_file(dev, &sensors->dev_attr); - if (res) { - sensors->dev_attr.attr.name = NULL; - goto error; - } - sensors++; - resource->num_sensors++; - ro++; - } - -error: - return res; -} - -static int register_rw_attrs(struct acpi_power_meter_resource *resource, - struct rw_sensor_template *rw) -{ - struct device *dev = &resource->acpi_dev->dev; - struct sensor_device_attribute *sensors = - &resource->sensors[resource->num_sensors]; - int res = 0; - - while (rw->label) { - sensors->dev_attr.attr.name = rw->label; - sensors->dev_attr.attr.mode = S_IRUGO | S_IWUSR; - sensors->dev_attr.show = rw->show; - sensors->dev_attr.store = rw->set; - sensors->index = rw->index; - - res = device_create_file(dev, &sensors->dev_attr); - if (res) { - sensors->dev_attr.attr.name = NULL; - goto error; - } - sensors++; - resource->num_sensors++; - rw++; - } - -error: - return res; -} - -static void remove_attrs(struct acpi_power_meter_resource *resource) -{ - int i; - - for (i = 0; i < resource->num_sensors; i++) { - if (!resource->sensors[i].dev_attr.attr.name) - continue; - device_remove_file(&resource->acpi_dev->dev, - &resource->sensors[i].dev_attr); - } - - remove_domain_devices(resource); - - resource->num_sensors = 0; -} - -static int setup_attrs(struct acpi_power_meter_resource *resource) -{ - int res = 0; - - res = read_domain_devices(resource); - if (res) - return res; - - if (resource->caps.flags & POWER_METER_CAN_MEASURE) { - res = register_ro_attrs(resource, meter_ro_attrs); - if (res) - goto error; - res = register_rw_attrs(resource, meter_rw_attrs); - if (res) - goto error; - } - - if (resource->caps.flags & POWER_METER_CAN_CAP) { - if (!can_cap_in_hardware()) { - dev_err(&resource->acpi_dev->dev, - "Ignoring unsafe software power cap!\n"); - goto skip_unsafe_cap; - } - - if (resource->caps.configurable_cap) { - res = register_rw_attrs(resource, rw_cap_attrs); - if (res) - goto error; - } else { - res = register_ro_attrs(resource, ro_cap_attrs); - if (res) - goto error; - } - res = register_ro_attrs(resource, misc_cap_attrs); - if (res) - goto error; - } -skip_unsafe_cap: - - if (resource->caps.flags & POWER_METER_CAN_TRIP) { - res = register_rw_attrs(resource, trip_attrs); - if (res) - goto error; - } - - res = register_ro_attrs(resource, misc_attrs); - if (res) - goto error; - - return res; -error: - remove_attrs(resource); - return res; -} - -static void free_capabilities(struct acpi_power_meter_resource *resource) -{ - acpi_string *str; - int i; - - str = &resource->model_number; - for (i = 0; i < 3; i++, str++) - kfree(*str); -} - -static int read_capabilities(struct acpi_power_meter_resource *resource) -{ - int res = 0; - int i; - struct acpi_buffer buffer = { ACPI_ALLOCATE_BUFFER, NULL }; - struct acpi_buffer state = { 0, NULL }; - struct acpi_buffer format = { sizeof("NNNNNNNNNNN"), "NNNNNNNNNNN" }; - union acpi_object *pss; - acpi_string *str; - acpi_status status; - - status = acpi_evaluate_object(resource->acpi_dev->handle, "_PMC", NULL, - &buffer); - if (ACPI_FAILURE(status)) { - ACPI_EXCEPTION((AE_INFO, status, "Evaluating _PMC")); - return -ENODEV; - } - - pss = buffer.pointer; - if (!pss || - pss->type != ACPI_TYPE_PACKAGE || - pss->package.count != 14) { - dev_err(&resource->acpi_dev->dev, ACPI_POWER_METER_NAME - "Invalid _PMC data\n"); - res = -EFAULT; - goto end; - } - - /* Grab all the integer data at once */ - state.length = sizeof(struct acpi_power_meter_capabilities); - state.pointer = &resource->caps; - - status = acpi_extract_package(pss, &format, &state); - if (ACPI_FAILURE(status)) { - ACPI_EXCEPTION((AE_INFO, status, "Invalid data")); - res = -EFAULT; - goto end; - } - - if (resource->caps.units) { - dev_err(&resource->acpi_dev->dev, ACPI_POWER_METER_NAME - "Unknown units %llu.\n", - resource->caps.units); - res = -EINVAL; - goto end; - } - - /* Grab the string data */ - str = &resource->model_number; - - for (i = 11; i < 14; i++) { - union acpi_object *element = &(pss->package.elements[i]); - - if (element->type != ACPI_TYPE_STRING) { - res = -EINVAL; - goto error; - } - - *str = kzalloc(sizeof(u8) * (element->string.length + 1), - GFP_KERNEL); - if (!*str) { - res = -ENOMEM; - goto error; - } - - strncpy(*str, element->string.pointer, element->string.length); - str++; - } - - dev_info(&resource->acpi_dev->dev, "Found ACPI power meter.\n"); - goto end; -error: - str = &resource->model_number; - for (i = 0; i < 3; i++, str++) - kfree(*str); -end: - kfree(buffer.pointer); - return res; -} - -/* Handle ACPI event notifications */ -static void acpi_power_meter_notify(struct acpi_device *device, u32 event) -{ - struct acpi_power_meter_resource *resource; - int res; - - if (!device || !acpi_driver_data(device)) - return; - - resource = acpi_driver_data(device); - - mutex_lock(&resource->lock); - switch (event) { - case METER_NOTIFY_CONFIG: - free_capabilities(resource); - res = read_capabilities(resource); - if (res) - break; - - remove_attrs(resource); - setup_attrs(resource); - break; - case METER_NOTIFY_TRIP: - sysfs_notify(&device->dev.kobj, NULL, POWER_AVERAGE_NAME); - update_meter(resource); - break; - case METER_NOTIFY_CAP: - sysfs_notify(&device->dev.kobj, NULL, POWER_CAP_NAME); - update_cap(resource); - break; - case METER_NOTIFY_INTERVAL: - sysfs_notify(&device->dev.kobj, NULL, POWER_AVG_INTERVAL_NAME); - update_avg_interval(resource); - break; - case METER_NOTIFY_CAPPING: - sysfs_notify(&device->dev.kobj, NULL, POWER_ALARM_NAME); - dev_info(&device->dev, "Capping in progress.\n"); - break; - default: - BUG(); - } - mutex_unlock(&resource->lock); - - acpi_bus_generate_netlink_event(ACPI_POWER_METER_CLASS, - dev_name(&device->dev), event, 0); -} - -static int acpi_power_meter_add(struct acpi_device *device) -{ - int res; - struct acpi_power_meter_resource *resource; - - if (!device) - return -EINVAL; - - resource = kzalloc(sizeof(struct acpi_power_meter_resource), - GFP_KERNEL); - if (!resource) - return -ENOMEM; - - resource->sensors_valid = 0; - resource->acpi_dev = device; - mutex_init(&resource->lock); - strcpy(acpi_device_name(device), ACPI_POWER_METER_DEVICE_NAME); - strcpy(acpi_device_class(device), ACPI_POWER_METER_CLASS); - device->driver_data = resource; - - free_capabilities(resource); - res = read_capabilities(resource); - if (res) - goto exit_free; - - resource->trip[0] = resource->trip[1] = -1; - - res = setup_attrs(resource); - if (res) - goto exit_free; - - resource->hwmon_dev = hwmon_device_register(&device->dev); - if (IS_ERR(resource->hwmon_dev)) { - res = PTR_ERR(resource->hwmon_dev); - goto exit_remove; - } - - res = 0; - goto exit; - -exit_remove: - remove_attrs(resource); -exit_free: - kfree(resource); -exit: - return res; -} - -static int acpi_power_meter_remove(struct acpi_device *device, int type) -{ - struct acpi_power_meter_resource *resource; - - if (!device || !acpi_driver_data(device)) - return -EINVAL; - - resource = acpi_driver_data(device); - hwmon_device_unregister(resource->hwmon_dev); - - free_capabilities(resource); - remove_attrs(resource); - - kfree(resource); - return 0; -} - -static int acpi_power_meter_resume(struct acpi_device *device) -{ - struct acpi_power_meter_resource *resource; - - if (!device || !acpi_driver_data(device)) - return -EINVAL; - - resource = acpi_driver_data(device); - free_capabilities(resource); - read_capabilities(resource); - - return 0; -} - -static struct acpi_driver acpi_power_meter_driver = { - .name = "power_meter", - .class = ACPI_POWER_METER_CLASS, - .ids = power_meter_ids, - .ops = { - .add = acpi_power_meter_add, - .remove = acpi_power_meter_remove, - .resume = acpi_power_meter_resume, - .notify = acpi_power_meter_notify, - }, -}; - -/* Module init/exit routines */ -static int __init enable_cap_knobs(const struct dmi_system_id *d) -{ - cap_in_hardware = 1; - return 0; -} - -static struct dmi_system_id __initdata pm_dmi_table[] = { - { - enable_cap_knobs, "IBM Active Energy Manager", - { - DMI_MATCH(DMI_SYS_VENDOR, "IBM") - }, - }, - {} -}; - -static int __init acpi_power_meter_init(void) -{ - int result; - - if (acpi_disabled) - return -ENODEV; - - dmi_check_system(pm_dmi_table); - - result = acpi_bus_register_driver(&acpi_power_meter_driver); - if (result < 0) - return -ENODEV; - - return 0; -} - -static void __exit acpi_power_meter_exit(void) -{ - acpi_bus_unregister_driver(&acpi_power_meter_driver); -} - -MODULE_AUTHOR("Darrick J. Wong <djwong@us.ibm.com>"); -MODULE_DESCRIPTION("ACPI 4.0 power meter driver"); -MODULE_LICENSE("GPL"); - -module_param(force_cap_on, bool, 0644); -MODULE_PARM_DESC(force_cap_on, "Enable power cap even it is unsafe to do so."); - -module_init(acpi_power_meter_init); -module_exit(acpi_power_meter_exit); diff --git a/drivers/acpi/processor_core.c b/drivers/acpi/processor_core.c index 25bf17da69fd..02d2a4c9084d 100644 --- a/drivers/acpi/processor_core.c +++ b/drivers/acpi/processor_core.c @@ -37,7 +37,6 @@ static struct dmi_system_id __initdata processor_idle_dmi_table[] = { {}, }; -#ifdef CONFIG_SMP static int map_lapic_id(struct acpi_subtable_header *entry, u32 acpi_id, int *apic_id) { @@ -165,7 +164,9 @@ exit: int acpi_get_cpuid(acpi_handle handle, int type, u32 acpi_id) { +#ifdef CONFIG_SMP int i; +#endif int apic_id = -1; apic_id = map_mat_entry(handle, type, acpi_id); @@ -174,14 +175,19 @@ int acpi_get_cpuid(acpi_handle handle, int type, u32 acpi_id) if (apic_id == -1) return apic_id; +#ifdef CONFIG_SMP for_each_possible_cpu(i) { if (cpu_physical_id(i) == apic_id) return i; } +#else + /* In UP kernel, only processor 0 is valid */ + if (apic_id == 0) + return apic_id; +#endif return -1; } EXPORT_SYMBOL_GPL(acpi_get_cpuid); -#endif static bool __init processor_physically_present(acpi_handle handle) { @@ -217,7 +223,7 @@ static bool __init processor_physically_present(acpi_handle handle) type = (acpi_type == ACPI_TYPE_DEVICE) ? 1 : 0; cpuid = acpi_get_cpuid(handle, type, acpi_id); - if ((cpuid == -1) && (num_possible_cpus() > 1)) + if (cpuid == -1) return false; return true; diff --git a/drivers/acpi/processor_idle.c b/drivers/acpi/processor_idle.c index d615b7d69bca..431ab11c8c1b 100644 --- a/drivers/acpi/processor_idle.c +++ b/drivers/acpi/processor_idle.c @@ -161,7 +161,7 @@ static void lapic_timer_check_state(int state, struct acpi_processor *pr, if (cpu_has(&cpu_data(pr->id), X86_FEATURE_ARAT)) return; - if (c1e_detected) + if (amd_e400_c1e_detected) type = ACPI_STATE_C1; /* diff --git a/drivers/acpi/sysfs.c b/drivers/acpi/sysfs.c index 61891e75583d..77255f250dbb 100644 --- a/drivers/acpi/sysfs.c +++ b/drivers/acpi/sysfs.c @@ -220,6 +220,14 @@ module_param_call(trace_state, param_set_trace_state, param_get_trace_state, NULL, 0644); #endif /* CONFIG_ACPI_DEBUG */ + +/* /sys/modules/acpi/parameters/aml_debug_output */ + +module_param_named(aml_debug_output, acpi_gbl_enable_aml_debug_object, + bool, 0644); +MODULE_PARM_DESC(aml_debug_output, + "To enable/disable the ACPI Debug Object output."); + /* /sys/module/acpi/parameters/acpica_version */ static int param_get_acpica_version(char *buffer, struct kernel_param *kp) { |