linux/drivers/acpi/acpica/utglobal.c

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/******************************************************************************
*
* Module Name: utglobal - Global variables for the ACPI subsystem
*
*****************************************************************************/
/*
* 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.
*/
#define DEFINE_ACPI_GLOBALS
#include <acpi/acpi.h>
#include "accommon.h"
#define _COMPONENT ACPI_UTILITIES
ACPI_MODULE_NAME("utglobal")
ACPICA 20050408 from Bob Moore Fixed three cases in the interpreter where an "index" argument to an ASL function was still (internally) 32 bits instead of the required 64 bits. This was the Index argument to the Index, Mid, and Match operators. The "strupr" function is now permanently local (acpi_ut_strupr), since this is not a POSIX-defined function and not present in most kernel-level C libraries. References to the C library strupr function have been removed from the headers. Completed the deployment of static functions/prototypes. All prototypes with the static attribute have been moved from the headers to the owning C file. ACPICA 20050329 from Bob Moore An error is now generated if an attempt is made to create a Buffer Field of length zero (A CreateField with a length operand of zero.) The interpreter now issues a warning whenever executable code at the module level is detected during ACPI table load. This will give some idea of the prevalence of this type of code. Implemented support for references to named objects (other than control methods) within package objects. Enhanced package object output for the debug object. Package objects are now completely dumped, showing all elements. Enhanced miscellaneous object output for the debug object. Any object can now be written to the debug object (for example, a device object can be written, and the type of the object will be displayed.) The "static" qualifier has been added to all local functions across the core subsystem. The number of "long" lines (> 80 chars) within the source has been significantly reduced, by about 1/3. Cleaned up all header files to ensure that all CA/iASL functions are prototyped (even static functions) and the formatting is consistent. Two new header files have been added, acopcode.h and acnames.h. Removed several obsolete functions that were no longer used. Signed-off-by: Len Brown <len.brown@intel.com>
2005-04-19 02:49:35 +00:00
/*******************************************************************************
*
* Static global variable initialization.
*
******************************************************************************/
/*
* We want the debug switches statically initialized so they
* are already set when the debugger is entered.
*/
/* Debug switch - level and trace mask */
u32 acpi_dbg_level = ACPI_DEBUG_DEFAULT;
/* Debug switch - layer (component) mask */
u32 acpi_dbg_layer = 0;
u32 acpi_gbl_nesting_level = 0;
/* Debugger globals */
u8 acpi_gbl_db_terminate_threads = FALSE;
u8 acpi_gbl_abort_method = FALSE;
u8 acpi_gbl_method_executing = FALSE;
/* System flags */
u32 acpi_gbl_startup_flags = 0;
/* System starts uninitialized */
u8 acpi_gbl_shutdown = TRUE;
const char *acpi_gbl_sleep_state_names[ACPI_S_STATE_COUNT] = {
"\\_S0_",
"\\_S1_",
"\\_S2_",
"\\_S3_",
"\\_S4_",
"\\_S5_"
};
const char *acpi_gbl_lowest_dstate_names[ACPI_NUM_sx_w_METHODS] = {
"_S0W",
"_S1W",
"_S2W",
"_S3W",
"_S4W"
};
const char *acpi_gbl_highest_dstate_names[ACPI_NUM_sx_d_METHODS] = {
"_S1D",
"_S2D",
"_S3D",
"_S4D"
};
/*******************************************************************************
*
* Namespace globals
*
******************************************************************************/
/*
* Predefined ACPI Names (Built-in to the Interpreter)
*
* NOTES:
* 1) _SB_ is defined to be a device to allow \_SB_._INI to be run
* during the initialization sequence.
* 2) _TZ_ is defined to be a thermal zone in order to allow ASL code to
* perform a Notify() operation on it. 09/2010: Changed to type Device.
* This still allows notifies, but does not confuse host code that
* searches for valid thermal_zone objects.
*/
const struct acpi_predefined_names acpi_gbl_pre_defined_names[] = {
{"_GPE", ACPI_TYPE_LOCAL_SCOPE, NULL},
{"_PR_", ACPI_TYPE_LOCAL_SCOPE, NULL},
{"_SB_", ACPI_TYPE_DEVICE, NULL},
{"_SI_", ACPI_TYPE_LOCAL_SCOPE, NULL},
{"_TZ_", ACPI_TYPE_DEVICE, NULL},
{"_REV", ACPI_TYPE_INTEGER, (char *)ACPI_CA_SUPPORT_LEVEL},
{"_OS_", ACPI_TYPE_STRING, ACPI_OS_NAME},
{"_GL_", ACPI_TYPE_MUTEX, (char *)1},
#if !defined (ACPI_NO_METHOD_EXECUTION) || defined (ACPI_CONSTANT_EVAL_ONLY)
{"_OSI", ACPI_TYPE_METHOD, (char *)1},
#endif
ACPICA 20050408 from Bob Moore Fixed three cases in the interpreter where an "index" argument to an ASL function was still (internally) 32 bits instead of the required 64 bits. This was the Index argument to the Index, Mid, and Match operators. The "strupr" function is now permanently local (acpi_ut_strupr), since this is not a POSIX-defined function and not present in most kernel-level C libraries. References to the C library strupr function have been removed from the headers. Completed the deployment of static functions/prototypes. All prototypes with the static attribute have been moved from the headers to the owning C file. ACPICA 20050329 from Bob Moore An error is now generated if an attempt is made to create a Buffer Field of length zero (A CreateField with a length operand of zero.) The interpreter now issues a warning whenever executable code at the module level is detected during ACPI table load. This will give some idea of the prevalence of this type of code. Implemented support for references to named objects (other than control methods) within package objects. Enhanced package object output for the debug object. Package objects are now completely dumped, showing all elements. Enhanced miscellaneous object output for the debug object. Any object can now be written to the debug object (for example, a device object can be written, and the type of the object will be displayed.) The "static" qualifier has been added to all local functions across the core subsystem. The number of "long" lines (> 80 chars) within the source has been significantly reduced, by about 1/3. Cleaned up all header files to ensure that all CA/iASL functions are prototyped (even static functions) and the formatting is consistent. Two new header files have been added, acopcode.h and acnames.h. Removed several obsolete functions that were no longer used. Signed-off-by: Len Brown <len.brown@intel.com>
2005-04-19 02:49:35 +00:00
/* Table terminator */
{NULL, ACPI_TYPE_ANY, NULL}
ACPICA 20050408 from Bob Moore Fixed three cases in the interpreter where an "index" argument to an ASL function was still (internally) 32 bits instead of the required 64 bits. This was the Index argument to the Index, Mid, and Match operators. The "strupr" function is now permanently local (acpi_ut_strupr), since this is not a POSIX-defined function and not present in most kernel-level C libraries. References to the C library strupr function have been removed from the headers. Completed the deployment of static functions/prototypes. All prototypes with the static attribute have been moved from the headers to the owning C file. ACPICA 20050329 from Bob Moore An error is now generated if an attempt is made to create a Buffer Field of length zero (A CreateField with a length operand of zero.) The interpreter now issues a warning whenever executable code at the module level is detected during ACPI table load. This will give some idea of the prevalence of this type of code. Implemented support for references to named objects (other than control methods) within package objects. Enhanced package object output for the debug object. Package objects are now completely dumped, showing all elements. Enhanced miscellaneous object output for the debug object. Any object can now be written to the debug object (for example, a device object can be written, and the type of the object will be displayed.) The "static" qualifier has been added to all local functions across the core subsystem. The number of "long" lines (> 80 chars) within the source has been significantly reduced, by about 1/3. Cleaned up all header files to ensure that all CA/iASL functions are prototyped (even static functions) and the formatting is consistent. Two new header files have been added, acopcode.h and acnames.h. Removed several obsolete functions that were no longer used. Signed-off-by: Len Brown <len.brown@intel.com>
2005-04-19 02:49:35 +00:00
};
/******************************************************************************
*
* Event and Hardware globals
*
******************************************************************************/
struct acpi_bit_register_info acpi_gbl_bit_register_info[ACPI_NUM_BITREG] = {
/* Name Parent Register Register Bit Position Register Bit Mask */
/* ACPI_BITREG_TIMER_STATUS */ {ACPI_REGISTER_PM1_STATUS,
ACPI_BITPOSITION_TIMER_STATUS,
ACPI_BITMASK_TIMER_STATUS},
/* ACPI_BITREG_BUS_MASTER_STATUS */ {ACPI_REGISTER_PM1_STATUS,
ACPI_BITPOSITION_BUS_MASTER_STATUS,
ACPI_BITMASK_BUS_MASTER_STATUS},
/* ACPI_BITREG_GLOBAL_LOCK_STATUS */ {ACPI_REGISTER_PM1_STATUS,
ACPI_BITPOSITION_GLOBAL_LOCK_STATUS,
ACPI_BITMASK_GLOBAL_LOCK_STATUS},
/* ACPI_BITREG_POWER_BUTTON_STATUS */ {ACPI_REGISTER_PM1_STATUS,
ACPI_BITPOSITION_POWER_BUTTON_STATUS,
ACPI_BITMASK_POWER_BUTTON_STATUS},
/* ACPI_BITREG_SLEEP_BUTTON_STATUS */ {ACPI_REGISTER_PM1_STATUS,
ACPI_BITPOSITION_SLEEP_BUTTON_STATUS,
ACPI_BITMASK_SLEEP_BUTTON_STATUS},
/* ACPI_BITREG_RT_CLOCK_STATUS */ {ACPI_REGISTER_PM1_STATUS,
ACPI_BITPOSITION_RT_CLOCK_STATUS,
ACPI_BITMASK_RT_CLOCK_STATUS},
/* ACPI_BITREG_WAKE_STATUS */ {ACPI_REGISTER_PM1_STATUS,
ACPI_BITPOSITION_WAKE_STATUS,
ACPI_BITMASK_WAKE_STATUS},
/* ACPI_BITREG_PCIEXP_WAKE_STATUS */ {ACPI_REGISTER_PM1_STATUS,
ACPI_BITPOSITION_PCIEXP_WAKE_STATUS,
ACPI_BITMASK_PCIEXP_WAKE_STATUS},
/* ACPI_BITREG_TIMER_ENABLE */ {ACPI_REGISTER_PM1_ENABLE,
ACPI_BITPOSITION_TIMER_ENABLE,
ACPI_BITMASK_TIMER_ENABLE},
/* ACPI_BITREG_GLOBAL_LOCK_ENABLE */ {ACPI_REGISTER_PM1_ENABLE,
ACPI_BITPOSITION_GLOBAL_LOCK_ENABLE,
ACPI_BITMASK_GLOBAL_LOCK_ENABLE},
/* ACPI_BITREG_POWER_BUTTON_ENABLE */ {ACPI_REGISTER_PM1_ENABLE,
ACPI_BITPOSITION_POWER_BUTTON_ENABLE,
ACPI_BITMASK_POWER_BUTTON_ENABLE},
/* ACPI_BITREG_SLEEP_BUTTON_ENABLE */ {ACPI_REGISTER_PM1_ENABLE,
ACPI_BITPOSITION_SLEEP_BUTTON_ENABLE,
ACPI_BITMASK_SLEEP_BUTTON_ENABLE},
/* ACPI_BITREG_RT_CLOCK_ENABLE */ {ACPI_REGISTER_PM1_ENABLE,
ACPI_BITPOSITION_RT_CLOCK_ENABLE,
ACPI_BITMASK_RT_CLOCK_ENABLE},
/* ACPI_BITREG_PCIEXP_WAKE_DISABLE */ {ACPI_REGISTER_PM1_ENABLE,
ACPI_BITPOSITION_PCIEXP_WAKE_DISABLE,
ACPI_BITMASK_PCIEXP_WAKE_DISABLE},
/* ACPI_BITREG_SCI_ENABLE */ {ACPI_REGISTER_PM1_CONTROL,
ACPI_BITPOSITION_SCI_ENABLE,
ACPI_BITMASK_SCI_ENABLE},
/* ACPI_BITREG_BUS_MASTER_RLD */ {ACPI_REGISTER_PM1_CONTROL,
ACPI_BITPOSITION_BUS_MASTER_RLD,
ACPI_BITMASK_BUS_MASTER_RLD},
/* ACPI_BITREG_GLOBAL_LOCK_RELEASE */ {ACPI_REGISTER_PM1_CONTROL,
ACPI_BITPOSITION_GLOBAL_LOCK_RELEASE,
ACPI_BITMASK_GLOBAL_LOCK_RELEASE},
/* ACPI_BITREG_SLEEP_TYPE */ {ACPI_REGISTER_PM1_CONTROL,
ACPI_BITPOSITION_SLEEP_TYPE,
ACPI_BITMASK_SLEEP_TYPE},
/* ACPI_BITREG_SLEEP_ENABLE */ {ACPI_REGISTER_PM1_CONTROL,
ACPI_BITPOSITION_SLEEP_ENABLE,
ACPI_BITMASK_SLEEP_ENABLE},
/* ACPI_BITREG_ARB_DIS */ {ACPI_REGISTER_PM2_CONTROL,
ACPI_BITPOSITION_ARB_DISABLE,
ACPI_BITMASK_ARB_DISABLE}
};
struct acpi_fixed_event_info acpi_gbl_fixed_event_info[ACPI_NUM_FIXED_EVENTS] = {
/* ACPI_EVENT_PMTIMER */ {ACPI_BITREG_TIMER_STATUS,
ACPI_BITREG_TIMER_ENABLE,
ACPI_BITMASK_TIMER_STATUS,
ACPI_BITMASK_TIMER_ENABLE},
/* ACPI_EVENT_GLOBAL */ {ACPI_BITREG_GLOBAL_LOCK_STATUS,
ACPI_BITREG_GLOBAL_LOCK_ENABLE,
ACPI_BITMASK_GLOBAL_LOCK_STATUS,
ACPI_BITMASK_GLOBAL_LOCK_ENABLE},
/* ACPI_EVENT_POWER_BUTTON */ {ACPI_BITREG_POWER_BUTTON_STATUS,
ACPI_BITREG_POWER_BUTTON_ENABLE,
ACPI_BITMASK_POWER_BUTTON_STATUS,
ACPI_BITMASK_POWER_BUTTON_ENABLE},
/* ACPI_EVENT_SLEEP_BUTTON */ {ACPI_BITREG_SLEEP_BUTTON_STATUS,
ACPI_BITREG_SLEEP_BUTTON_ENABLE,
ACPI_BITMASK_SLEEP_BUTTON_STATUS,
ACPI_BITMASK_SLEEP_BUTTON_ENABLE},
/* ACPI_EVENT_RTC */ {ACPI_BITREG_RT_CLOCK_STATUS,
ACPI_BITREG_RT_CLOCK_ENABLE,
ACPI_BITMASK_RT_CLOCK_STATUS,
ACPI_BITMASK_RT_CLOCK_ENABLE},
};
ACPICA 20050408 from Bob Moore Fixed three cases in the interpreter where an "index" argument to an ASL function was still (internally) 32 bits instead of the required 64 bits. This was the Index argument to the Index, Mid, and Match operators. The "strupr" function is now permanently local (acpi_ut_strupr), since this is not a POSIX-defined function and not present in most kernel-level C libraries. References to the C library strupr function have been removed from the headers. Completed the deployment of static functions/prototypes. All prototypes with the static attribute have been moved from the headers to the owning C file. ACPICA 20050329 from Bob Moore An error is now generated if an attempt is made to create a Buffer Field of length zero (A CreateField with a length operand of zero.) The interpreter now issues a warning whenever executable code at the module level is detected during ACPI table load. This will give some idea of the prevalence of this type of code. Implemented support for references to named objects (other than control methods) within package objects. Enhanced package object output for the debug object. Package objects are now completely dumped, showing all elements. Enhanced miscellaneous object output for the debug object. Any object can now be written to the debug object (for example, a device object can be written, and the type of the object will be displayed.) The "static" qualifier has been added to all local functions across the core subsystem. The number of "long" lines (> 80 chars) within the source has been significantly reduced, by about 1/3. Cleaned up all header files to ensure that all CA/iASL functions are prototyped (even static functions) and the formatting is consistent. Two new header files have been added, acopcode.h and acnames.h. Removed several obsolete functions that were no longer used. Signed-off-by: Len Brown <len.brown@intel.com>
2005-04-19 02:49:35 +00:00
/*******************************************************************************
*
* FUNCTION: acpi_ut_init_globals
*
ACPICA 20050408 from Bob Moore Fixed three cases in the interpreter where an "index" argument to an ASL function was still (internally) 32 bits instead of the required 64 bits. This was the Index argument to the Index, Mid, and Match operators. The "strupr" function is now permanently local (acpi_ut_strupr), since this is not a POSIX-defined function and not present in most kernel-level C libraries. References to the C library strupr function have been removed from the headers. Completed the deployment of static functions/prototypes. All prototypes with the static attribute have been moved from the headers to the owning C file. ACPICA 20050329 from Bob Moore An error is now generated if an attempt is made to create a Buffer Field of length zero (A CreateField with a length operand of zero.) The interpreter now issues a warning whenever executable code at the module level is detected during ACPI table load. This will give some idea of the prevalence of this type of code. Implemented support for references to named objects (other than control methods) within package objects. Enhanced package object output for the debug object. Package objects are now completely dumped, showing all elements. Enhanced miscellaneous object output for the debug object. Any object can now be written to the debug object (for example, a device object can be written, and the type of the object will be displayed.) The "static" qualifier has been added to all local functions across the core subsystem. The number of "long" lines (> 80 chars) within the source has been significantly reduced, by about 1/3. Cleaned up all header files to ensure that all CA/iASL functions are prototyped (even static functions) and the formatting is consistent. Two new header files have been added, acopcode.h and acnames.h. Removed several obsolete functions that were no longer used. Signed-off-by: Len Brown <len.brown@intel.com>
2005-04-19 02:49:35 +00:00
* PARAMETERS: None
*
* RETURN: Status
*
* DESCRIPTION: Init library globals. All globals that require specific
* initialization should be initialized here!
*
ACPICA 20050408 from Bob Moore Fixed three cases in the interpreter where an "index" argument to an ASL function was still (internally) 32 bits instead of the required 64 bits. This was the Index argument to the Index, Mid, and Match operators. The "strupr" function is now permanently local (acpi_ut_strupr), since this is not a POSIX-defined function and not present in most kernel-level C libraries. References to the C library strupr function have been removed from the headers. Completed the deployment of static functions/prototypes. All prototypes with the static attribute have been moved from the headers to the owning C file. ACPICA 20050329 from Bob Moore An error is now generated if an attempt is made to create a Buffer Field of length zero (A CreateField with a length operand of zero.) The interpreter now issues a warning whenever executable code at the module level is detected during ACPI table load. This will give some idea of the prevalence of this type of code. Implemented support for references to named objects (other than control methods) within package objects. Enhanced package object output for the debug object. Package objects are now completely dumped, showing all elements. Enhanced miscellaneous object output for the debug object. Any object can now be written to the debug object (for example, a device object can be written, and the type of the object will be displayed.) The "static" qualifier has been added to all local functions across the core subsystem. The number of "long" lines (> 80 chars) within the source has been significantly reduced, by about 1/3. Cleaned up all header files to ensure that all CA/iASL functions are prototyped (even static functions) and the formatting is consistent. Two new header files have been added, acopcode.h and acnames.h. Removed several obsolete functions that were no longer used. Signed-off-by: Len Brown <len.brown@intel.com>
2005-04-19 02:49:35 +00:00
******************************************************************************/
acpi_status acpi_ut_init_globals(void)
{
acpi_status status;
u32 i;
ACPI: ACPICA 20060421 Removed a device initialization optimization introduced in 20051216 where the _STA method was not run unless an _INI was also present for the same device. This optimization could cause problems because it could allow _INI methods to be run within a not-present device subtree (If a not-present device had no _INI, _STA would not be run, the not-present status would not be discovered, and the children of the device would be incorrectly traversed.) Implemented a new _STA optimization where namespace subtrees that do not contain _INI are identified and ignored during device initialization. Selectively running _STA can significantly improve boot time on large machines (with assistance from Len Brown.) Implemented support for the device initialization case where the returned _STA flags indicate a device not-present but functioning. In this case, _INI is not run, but the device children are examined for presence, as per the ACPI specification. Implemented an additional change to the IndexField support in order to conform to MS behavior. The value written to the Index Register is not simply a byte offset, it is a byte offset in units of the access width of the parent Index Field. (Fiodor Suietov) Defined and deployed a new OSL interface, acpi_os_validate_address(). This interface is called during the creation of all AML operation regions, and allows the host OS to exert control over what addresses it will allow the AML code to access. Operation Regions whose addresses are disallowed will cause a runtime exception when they are actually accessed (will not affect or abort table loading.) Defined and deployed a new OSL interface, acpi_os_validate_interface(). This interface allows the host OS to match the various "optional" interface/behavior strings for the _OSI predefined control method as appropriate (with assistance from Bjorn Helgaas.) Restructured and corrected various problems in the exception handling code paths within DsCallControlMethod and DsTerminateControlMethod in dsmethod (with assistance from Takayoshi Kochi.) Modified the Linux source converter to ignore quoted string literals while converting identifiers from mixed to lower case. This will correct problems with the disassembler and other areas where such strings must not be modified. The ACPI_FUNCTION_* macros no longer require quotes around the function name. This allows the Linux source converter to convert the names, now that the converter ignores quoted strings. Signed-off-by: Bob Moore <robert.moore@intel.com> Signed-off-by: Len Brown <len.brown@intel.com>
2006-04-21 21:15:00 +00:00
ACPI_FUNCTION_TRACE(ut_init_globals);
ACPICA 20050617-0624 from Bob Moore <robert.moore@intel.com> ACPICA 20050617: Moved the object cache operations into the OS interface layer (OSL) to allow the host OS to handle these operations if desired (for example, the Linux OSL will invoke the slab allocator). This support is optional; the compile time define ACPI_USE_LOCAL_CACHE may be used to utilize the original cache code in the ACPI CA core. The new OSL interfaces are shown below. See utalloc.c for an example implementation, and acpiosxf.h for the exact interface definitions. Thanks to Alexey Starikovskiy. acpi_os_create_cache acpi_os_delete_cache acpi_os_purge_cache acpi_os_acquire_object acpi_os_release_object Modified the interfaces to acpi_os_acquire_lock and acpi_os_release_lock to return and restore a flags parameter. This fits better with many OS lock models. Note: the current execution state (interrupt handler or not) is no longer passed to these interfaces. If necessary, the OSL must determine this state by itself, a simple and fast operation. Thanks to Alexey Starikovskiy. Fixed a problem in the ACPI table handling where a valid XSDT was assumed present if the revision of the RSDP was 2 or greater. According to the ACPI specification, the XSDT is optional in all cases, and the table manager therefore now checks for both an RSDP >=2 and a valid XSDT pointer. Otherwise, the RSDT pointer is used. Some ACPI 2.0 compliant BIOSs contain only the RSDT. Fixed an interpreter problem with the Mid() operator in the case of an input string where the resulting output string is of zero length. It now correctly returns a valid, null terminated string object instead of a string object with a null pointer. Fixed a problem with the control method argument handling to allow a store to an Arg object that already contains an object of type Device. The Device object is now correctly overwritten. Previously, an error was returned. ACPICA 20050624: Modified the new OSL cache interfaces to use ACPI_CACHE_T as the type for the host-defined cache object. This allows the OSL implementation to define and type this object in any manner desired, simplifying the OSL implementation. For example, ACPI_CACHE_T is defined as kmem_cache_t for Linux, and should be defined in the OS-specific header file for other operating systems as required. Changed the interface to AcpiOsAcquireObject to directly return the requested object as the function return (instead of ACPI_STATUS.) This change was made for performance reasons, since this is the purpose of the interface in the first place. acpi_os_acquire_object is now similar to the acpi_os_allocate interface. Thanks to Alexey Starikovskiy. Modified the initialization sequence in acpi_initialize_subsystem to call the OSL interface acpi_osl_initialize first, before any local initialization. This change was required because the global initialization now calls OSL interfaces. Restructured the code base to split some files because of size and/or because the code logically belonged in a separate file. New files are listed below. utilities/utcache.c /* Local cache interfaces */ utilities/utmutex.c /* Local mutex support */ utilities/utstate.c /* State object support */ parser/psloop.c /* Main AML parse loop */ Signed-off-by: Len Brown <len.brown@intel.com>
2005-06-24 04:00:00 +00:00
/* Create all memory caches */
status = acpi_ut_create_caches();
if (ACPI_FAILURE(status)) {
return_ACPI_STATUS(status);
ACPICA 20050617-0624 from Bob Moore <robert.moore@intel.com> ACPICA 20050617: Moved the object cache operations into the OS interface layer (OSL) to allow the host OS to handle these operations if desired (for example, the Linux OSL will invoke the slab allocator). This support is optional; the compile time define ACPI_USE_LOCAL_CACHE may be used to utilize the original cache code in the ACPI CA core. The new OSL interfaces are shown below. See utalloc.c for an example implementation, and acpiosxf.h for the exact interface definitions. Thanks to Alexey Starikovskiy. acpi_os_create_cache acpi_os_delete_cache acpi_os_purge_cache acpi_os_acquire_object acpi_os_release_object Modified the interfaces to acpi_os_acquire_lock and acpi_os_release_lock to return and restore a flags parameter. This fits better with many OS lock models. Note: the current execution state (interrupt handler or not) is no longer passed to these interfaces. If necessary, the OSL must determine this state by itself, a simple and fast operation. Thanks to Alexey Starikovskiy. Fixed a problem in the ACPI table handling where a valid XSDT was assumed present if the revision of the RSDP was 2 or greater. According to the ACPI specification, the XSDT is optional in all cases, and the table manager therefore now checks for both an RSDP >=2 and a valid XSDT pointer. Otherwise, the RSDT pointer is used. Some ACPI 2.0 compliant BIOSs contain only the RSDT. Fixed an interpreter problem with the Mid() operator in the case of an input string where the resulting output string is of zero length. It now correctly returns a valid, null terminated string object instead of a string object with a null pointer. Fixed a problem with the control method argument handling to allow a store to an Arg object that already contains an object of type Device. The Device object is now correctly overwritten. Previously, an error was returned. ACPICA 20050624: Modified the new OSL cache interfaces to use ACPI_CACHE_T as the type for the host-defined cache object. This allows the OSL implementation to define and type this object in any manner desired, simplifying the OSL implementation. For example, ACPI_CACHE_T is defined as kmem_cache_t for Linux, and should be defined in the OS-specific header file for other operating systems as required. Changed the interface to AcpiOsAcquireObject to directly return the requested object as the function return (instead of ACPI_STATUS.) This change was made for performance reasons, since this is the purpose of the interface in the first place. acpi_os_acquire_object is now similar to the acpi_os_allocate interface. Thanks to Alexey Starikovskiy. Modified the initialization sequence in acpi_initialize_subsystem to call the OSL interface acpi_osl_initialize first, before any local initialization. This change was required because the global initialization now calls OSL interfaces. Restructured the code base to split some files because of size and/or because the code logically belonged in a separate file. New files are listed below. utilities/utcache.c /* Local cache interfaces */ utilities/utmutex.c /* Local mutex support */ utilities/utstate.c /* State object support */ parser/psloop.c /* Main AML parse loop */ Signed-off-by: Len Brown <len.brown@intel.com>
2005-06-24 04:00:00 +00:00
}
/* Mutex locked flags */
for (i = 0; i < ACPI_NUM_MUTEX; i++) {
acpi_gbl_mutex_info[i].mutex = NULL;
acpi_gbl_mutex_info[i].thread_id = ACPI_MUTEX_NOT_ACQUIRED;
acpi_gbl_mutex_info[i].use_count = 0;
}
for (i = 0; i < ACPI_NUM_OWNERID_MASKS; i++) {
acpi_gbl_owner_id_mask[i] = 0;
}
/* Last owner_iD is never valid */
acpi_gbl_owner_id_mask[ACPI_NUM_OWNERID_MASKS - 1] = 0x80000000;
/* GPE support */
acpi_gbl_gpe_xrupt_list_head = NULL;
acpi_gbl_gpe_fadt_blocks[0] = NULL;
acpi_gbl_gpe_fadt_blocks[1] = NULL;
acpi_current_gpe_count = 0;
acpi_gbl_all_gpes_initialized = FALSE;
/* Global handlers */
acpi_gbl_system_notify.handler = NULL;
acpi_gbl_device_notify.handler = NULL;
acpi_gbl_exception_handler = NULL;
acpi_gbl_init_handler = NULL;
acpi_gbl_table_handler = NULL;
acpi_gbl_interface_handler = NULL;
acpi_gbl_global_event_handler = NULL;
/* Global Lock support */
ACPI: ACPICA 20060623 Implemented a new acpi_spinlock type for the OSL lock interfaces. This allows the type to be customized to the host OS for improved efficiency (since a spinlock is usually a very small object.) Implemented support for "ignored" bits in the ACPI registers. According to the ACPI specification, these bits should be preserved when writing the registers via a read/modify/write cycle. There are 3 bits preserved in this manner: PM1_CONTROL[0] (SCI_EN), PM1_CONTROL[9], and PM1_STATUS[11]. http://bugzilla.kernel.org/show_bug.cgi?id=3691 Implemented the initial deployment of new OSL mutex interfaces. Since some host operating systems have separate mutex and semaphore objects, this feature was requested. The base code now uses mutexes (and the new mutex interfaces) wherever a binary semaphore was used previously. However, for the current release, the mutex interfaces are defined as macros to map them to the existing semaphore interfaces. Fixed several problems with the support for the control method SyncLevel parameter. The SyncLevel now works according to the ACPI specification and in concert with the Mutex SyncLevel parameter, since the current SyncLevel is a property of the executing thread. Mutual exclusion for control methods is now implemented with a mutex instead of a semaphore. Fixed three instances of the use of the C shift operator in the bitfield support code (exfldio.c) to avoid the use of a shift value larger than the target data width. The behavior of C compilers is undefined in this case and can cause unpredictable results, and therefore the case must be detected and avoided. (Fiodor Suietov) Added an info message whenever an SSDT or OEM table is loaded dynamically via the Load() or LoadTable() ASL operators. This should improve debugging capability since it will show exactly what tables have been loaded (beyond the tables present in the RSDT/XSDT.) Signed-off-by: Bob Moore <robert.moore@intel.com> Signed-off-by: Len Brown <len.brown@intel.com>
2006-06-23 21:04:00 +00:00
acpi_gbl_global_lock_semaphore = NULL;
acpi_gbl_global_lock_mutex = NULL;
acpi_gbl_global_lock_acquired = FALSE;
acpi_gbl_global_lock_handle = 0;
acpi_gbl_global_lock_present = FALSE;
/* Miscellaneous variables */
acpi_gbl_DSDT = NULL;
acpi_gbl_cm_single_step = FALSE;
acpi_gbl_db_terminate_threads = FALSE;
acpi_gbl_shutdown = FALSE;
acpi_gbl_ns_lookup_count = 0;
acpi_gbl_ps_find_count = 0;
acpi_gbl_acpi_hardware_present = TRUE;
acpi_gbl_last_owner_id_index = 0;
acpi_gbl_next_owner_id_offset = 0;
[ACPI] ACPICA 20050930 Completed a major overhaul of the Resource Manager code - specifically, optimizations in the area of the AML/internal resource conversion code. The code has been optimized to simplify and eliminate duplicated code, CPU stack use has been decreased by optimizing function parameters and local variables, and naming conventions across the manager have been standardized for clarity and ease of maintenance (this includes function, parameter, variable, and struct/typedef names.) All Resource Manager dispatch and information tables have been moved to a single location for clarity and ease of maintenance. One new file was created, named "rsinfo.c". The ACPI return macros (return_ACPI_STATUS, etc.) have been modified to guarantee that the argument is not evaluated twice, making them less prone to macro side-effects. However, since there exists the possibility of additional stack use if a particular compiler cannot optimize them (such as in the debug generation case), the original macros are optionally available. Note that some invocations of the return_VALUE macro may now cause size mismatch warnings; the return_UINT8 and return_UINT32 macros are provided to eliminate these. (From Randy Dunlap) Implemented a new mechanism to enable debug tracing for individual control methods. A new external interface, acpi_debug_trace(), is provided to enable this mechanism. The intent is to allow the host OS to easily enable and disable tracing for problematic control methods. This interface can be easily exposed to a user or debugger interface if desired. See the file psxface.c for details. acpi_ut_callocate() will now return a valid pointer if a length of zero is specified - a length of one is used and a warning is issued. This matches the behavior of acpi_ut_allocate(). Signed-off-by: Bob Moore <robert.moore@intel.com> Signed-off-by: Len Brown <len.brown@intel.com>
2005-09-30 23:03:00 +00:00
acpi_gbl_trace_method_name = 0;
acpi_gbl_trace_dbg_level = 0;
acpi_gbl_trace_dbg_layer = 0;
acpi_gbl_debugger_configuration = DEBUGGER_THREADING;
acpi_gbl_db_output_flags = ACPI_DB_CONSOLE_OUTPUT;
acpi_gbl_osi_data = 0;
acpi_gbl_osi_mutex = NULL;
acpi_gbl_reg_methods_executed = FALSE;
/* Hardware oriented */
acpi_gbl_events_initialized = FALSE;
acpi_gbl_system_awake_and_running = TRUE;
/* Namespace */
acpi_gbl_module_code_list = NULL;
acpi_gbl_root_node = NULL;
acpi_gbl_root_node_struct.name.integer = ACPI_ROOT_NAME;
acpi_gbl_root_node_struct.descriptor_type = ACPI_DESC_TYPE_NAMED;
acpi_gbl_root_node_struct.type = ACPI_TYPE_DEVICE;
acpi_gbl_root_node_struct.parent = NULL;
acpi_gbl_root_node_struct.child = NULL;
acpi_gbl_root_node_struct.peer = NULL;
acpi_gbl_root_node_struct.object = NULL;
#ifdef ACPI_DEBUG_OUTPUT
acpi_gbl_lowest_stack_pointer = ACPI_CAST_PTR(acpi_size, ACPI_SIZE_MAX);
#endif
#ifdef ACPI_DBG_TRACK_ALLOCATIONS
acpi_gbl_display_final_mem_stats = FALSE;
#endif
return_ACPI_STATUS(AE_OK);
}
ACPI_EXPORT_SYMBOL(acpi_gbl_FADT)
ACPI_EXPORT_SYMBOL(acpi_dbg_level)
ACPI_EXPORT_SYMBOL(acpi_dbg_layer)
ACPI_EXPORT_SYMBOL(acpi_current_gpe_count)