diff options
Diffstat (limited to 'drivers/acpi')
55 files changed, 3469 insertions, 2703 deletions
diff --git a/drivers/acpi/Kconfig b/drivers/acpi/Kconfig index 2aa042a..d918e13 100644 --- a/drivers/acpi/Kconfig +++ b/drivers/acpi/Kconfig @@ -7,7 +7,6 @@ menuconfig ACPI depends on !IA64_HP_SIM depends on IA64 || X86 depends on PCI - depends on PM select PNP default y help @@ -381,6 +380,21 @@ 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 d113fa5..cba0b23 100644 --- a/drivers/acpi/Makefile +++ b/drivers/acpi/Makefile @@ -62,6 +62,7 @@ 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/acpi_pad.c b/drivers/acpi/acpi_pad.c index 6afceb3..a43fa1a 100644 --- a/drivers/acpi/acpi_pad.c +++ b/drivers/acpi/acpi_pad.c @@ -298,7 +298,7 @@ static ssize_t acpi_pad_rrtime_store(struct device *dev, static ssize_t acpi_pad_rrtime_show(struct device *dev, struct device_attribute *attr, char *buf) { - return scnprintf(buf, PAGE_SIZE, "%d", round_robin_time); + return scnprintf(buf, PAGE_SIZE, "%d\n", round_robin_time); } static DEVICE_ATTR(rrtime, S_IRUGO|S_IWUSR, acpi_pad_rrtime_show, @@ -321,7 +321,7 @@ static ssize_t acpi_pad_idlepct_store(struct device *dev, static ssize_t acpi_pad_idlepct_show(struct device *dev, struct device_attribute *attr, char *buf) { - return scnprintf(buf, PAGE_SIZE, "%d", idle_pct); + return scnprintf(buf, PAGE_SIZE, "%d\n", idle_pct); } static DEVICE_ATTR(idlepct, S_IRUGO|S_IWUSR, acpi_pad_idlepct_show, @@ -342,8 +342,11 @@ static ssize_t acpi_pad_idlecpus_store(struct device *dev, static ssize_t acpi_pad_idlecpus_show(struct device *dev, struct device_attribute *attr, char *buf) { - return cpumask_scnprintf(buf, PAGE_SIZE, - to_cpumask(pad_busy_cpus_bits)); + int n = 0; + n = cpumask_scnprintf(buf, PAGE_SIZE-2, to_cpumask(pad_busy_cpus_bits)); + buf[n++] = '\n'; + buf[n] = '\0'; + return n; } static DEVICE_ATTR(idlecpus, S_IRUGO|S_IWUSR, acpi_pad_idlecpus_show, @@ -453,7 +456,7 @@ static void acpi_pad_notify(acpi_handle handle, u32 event, dev_name(&device->dev), event, 0); break; default: - printk(KERN_WARNING"Unsupported event [0x%x]\n", event); + printk(KERN_WARNING "Unsupported event [0x%x]\n", event); break; } } diff --git a/drivers/acpi/acpica/Makefile b/drivers/acpi/acpica/Makefile index eec2ead..301bd2d 100644 --- a/drivers/acpi/acpica/Makefile +++ b/drivers/acpi/acpica/Makefile @@ -10,11 +10,11 @@ obj-y += acpi.o acpi-y := dsfield.o dsmthdat.o dsopcode.o dswexec.o dswscope.o \ dsmethod.o dsobject.o dsutils.o dswload.o dswstate.o \ - dsinit.o + dsinit.o dsargs.o dscontrol.o dswload2.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\ @@ -45,4 +45,4 @@ acpi-y += tbxface.o tbinstal.o tbutils.o tbfind.o tbfadt.o tbxfroot.o acpi-y += utalloc.o utdebug.o uteval.o utinit.o utmisc.o utxface.o \ utcopy.o utdelete.o utglobal.o utmath.o utobject.o \ utstate.o utmutex.o utobject.o utresrc.o utlock.o utids.o \ - utosi.o utxferror.o + utosi.o utxferror.o utdecode.o diff --git a/drivers/acpi/acpica/acconfig.h b/drivers/acpi/acpica/acconfig.h index ab87396..bc533dd 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/acdispat.h b/drivers/acpi/acpica/acdispat.h index 666271b..2d1b7ff 100644 --- a/drivers/acpi/acpica/acdispat.h +++ b/drivers/acpi/acpica/acdispat.h @@ -48,7 +48,7 @@ #define NAMEOF_ARG_NTE "__A0" /* - * dsopcode - support for late evaluation + * dsargs - execution of dynamic arguments for static objects */ acpi_status acpi_ds_get_buffer_field_arguments(union acpi_operand_object *obj_desc); @@ -62,6 +62,20 @@ acpi_status acpi_ds_get_buffer_arguments(union acpi_operand_object *obj_desc); acpi_status acpi_ds_get_package_arguments(union acpi_operand_object *obj_desc); +/* + * dscontrol - support for execution control opcodes + */ +acpi_status +acpi_ds_exec_begin_control_op(struct acpi_walk_state *walk_state, + union acpi_parse_object *op); + +acpi_status +acpi_ds_exec_end_control_op(struct acpi_walk_state *walk_state, + union acpi_parse_object *op); + +/* + * dsopcode - support for late operand evaluation + */ acpi_status acpi_ds_eval_buffer_field_operands(struct acpi_walk_state *walk_state, union acpi_parse_object *op); @@ -86,17 +100,6 @@ acpi_ds_eval_bank_field_operands(struct acpi_walk_state *walk_state, acpi_status acpi_ds_initialize_region(acpi_handle obj_handle); /* - * dsctrl - Parser/Interpreter interface, control stack routines - */ -acpi_status -acpi_ds_exec_begin_control_op(struct acpi_walk_state *walk_state, - union acpi_parse_object *op); - -acpi_status -acpi_ds_exec_end_control_op(struct acpi_walk_state *walk_state, - union acpi_parse_object *op); - -/* * dsexec - Parser/Interpreter interface, method execution callbacks */ acpi_status @@ -136,23 +139,26 @@ acpi_ds_init_field_objects(union acpi_parse_object *op, struct acpi_walk_state *walk_state); /* - * dsload - Parser/Interpreter interface, namespace load callbacks + * dsload - Parser/Interpreter interface, pass 1 namespace load callbacks */ acpi_status +acpi_ds_init_callbacks(struct acpi_walk_state *walk_state, u32 pass_number); + +acpi_status acpi_ds_load1_begin_op(struct acpi_walk_state *walk_state, union acpi_parse_object **out_op); acpi_status acpi_ds_load1_end_op(struct acpi_walk_state *walk_state); +/* + * dsload - Parser/Interpreter interface, pass 2 namespace load callbacks + */ acpi_status acpi_ds_load2_begin_op(struct acpi_walk_state *walk_state, union acpi_parse_object **out_op); acpi_status acpi_ds_load2_end_op(struct acpi_walk_state *walk_state); -acpi_status -acpi_ds_init_callbacks(struct acpi_walk_state *walk_state, u32 pass_number); - /* * dsmthdat - method data (locals/args) */ diff --git a/drivers/acpi/acpica/acevents.h b/drivers/acpi/acpica/acevents.h index 41d247d..bea3b48 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 82a1bd2..73863d8 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 */ /***************************************************************************** * @@ -273,6 +272,10 @@ ACPI_EXTERN u32 acpi_gbl_owner_id_mask[ACPI_NUM_OWNERID_MASKS]; ACPI_EXTERN u8 acpi_gbl_last_owner_id_index; ACPI_EXTERN u8 acpi_gbl_next_owner_id_offset; +/* Initialization sequencing */ + +ACPI_EXTERN u8 acpi_gbl_reg_methods_executed; + /* Misc */ ACPI_EXTERN u32 acpi_gbl_original_mode; diff --git a/drivers/acpi/acpica/aclocal.h b/drivers/acpi/acpica/aclocal.h index edc2586..c7f743c 100644 --- a/drivers/acpi/acpica/aclocal.h +++ b/drivers/acpi/acpica/aclocal.h @@ -89,25 +89,6 @@ union acpi_parse_object; #define ACPI_MAX_MUTEX 7 #define ACPI_NUM_MUTEX ACPI_MAX_MUTEX+1 -#if defined(ACPI_DEBUG_OUTPUT) || defined(ACPI_DEBUGGER) -#ifdef DEFINE_ACPI_GLOBALS - -/* Debug names for the mutexes above */ - -static char *acpi_gbl_mutex_names[ACPI_NUM_MUTEX] = { - "ACPI_MTX_Interpreter", - "ACPI_MTX_Namespace", - "ACPI_MTX_Tables", - "ACPI_MTX_Events", - "ACPI_MTX_Caches", - "ACPI_MTX_Memory", - "ACPI_MTX_CommandComplete", - "ACPI_MTX_CommandReady" -}; - -#endif -#endif - /* Lock structure for reader/writer interfaces */ struct acpi_rw_lock { diff --git a/drivers/acpi/acpica/amlcode.h b/drivers/acpi/acpica/amlcode.h index f4f0998..1077f17 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/dsargs.c b/drivers/acpi/acpica/dsargs.c new file mode 100644 index 0000000..8c7b997 --- /dev/null +++ b/drivers/acpi/acpica/dsargs.c @@ -0,0 +1,391 @@ +/****************************************************************************** + * + * Module Name: dsargs - Support for execution of dynamic arguments for static + * objects (regions, fields, buffer fields, etc.) + * + *****************************************************************************/ + +/* + * 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 "acparser.h" +#include "amlcode.h" +#include "acdispat.h" +#include "acnamesp.h" + +#define _COMPONENT ACPI_DISPATCHER +ACPI_MODULE_NAME("dsargs") + +/* Local prototypes */ +static acpi_status +acpi_ds_execute_arguments(struct acpi_namespace_node *node, + struct acpi_namespace_node *scope_node, + u32 aml_length, u8 *aml_start); + +/******************************************************************************* + * + * FUNCTION: acpi_ds_execute_arguments + * + * PARAMETERS: Node - Object NS node + * scope_node - Parent NS node + * aml_length - Length of executable AML + * aml_start - Pointer to the AML + * + * RETURN: Status. + * + * DESCRIPTION: Late (deferred) execution of region or field arguments + * + ******************************************************************************/ + +static acpi_status +acpi_ds_execute_arguments(struct acpi_namespace_node *node, + struct acpi_namespace_node *scope_node, + u32 aml_length, u8 *aml_start) +{ + acpi_status status; + union acpi_parse_object *op; + struct acpi_walk_state *walk_state; + + ACPI_FUNCTION_TRACE(ds_execute_arguments); + + /* Allocate a new parser op to be the root of the parsed tree */ + + op = acpi_ps_alloc_op(AML_INT_EVAL_SUBTREE_OP); + if (!op) { + return_ACPI_STATUS(AE_NO_MEMORY); + } + + /* Save the Node for use in acpi_ps_parse_aml */ + + op->common.node = scope_node; + + /* Create and initialize a new parser state */ + + walk_state = acpi_ds_create_walk_state(0, NULL, NULL, NULL); + if (!walk_state) { + status = AE_NO_MEMORY; + goto cleanup; + } + + status = acpi_ds_init_aml_walk(walk_state, op, NULL, aml_start, + aml_length, NULL, ACPI_IMODE_LOAD_PASS1); + if (ACPI_FAILURE(status)) { + acpi_ds_delete_walk_state(walk_state); + goto cleanup; + } + + /* Mark this parse as a deferred opcode */ + + walk_state->parse_flags = ACPI_PARSE_DEFERRED_OP; + walk_state->deferred_node = node; + + /* Pass1: Parse the entire declaration */ + + status = acpi_ps_parse_aml(walk_state); + if (ACPI_FAILURE(status)) { + goto cleanup; + } + + /* Get and init the Op created above */ + + op->common.node = node; + acpi_ps_delete_parse_tree(op); + + /* Evaluate the deferred arguments */ + + op = acpi_ps_alloc_op(AML_INT_EVAL_SUBTREE_OP); + if (!op) { + return_ACPI_STATUS(AE_NO_MEMORY); + } + + op->common.node = scope_node; + + /* Create and initialize a new parser state */ + + walk_state = acpi_ds_create_walk_state(0, NULL, NULL, NULL); + if (!walk_state) { + status = AE_NO_MEMORY; + goto cleanup; + } + + /* Execute the opcode and arguments */ + + status = acpi_ds_init_aml_walk(walk_state, op, NULL, aml_start, + aml_length, NULL, ACPI_IMODE_EXECUTE); + if (ACPI_FAILURE(status)) { + acpi_ds_delete_walk_state(walk_state); + goto cleanup; + } + + /* Mark this execution as a deferred opcode */ + + walk_state->deferred_node = node; + status = acpi_ps_parse_aml(walk_state); + + cleanup: + acpi_ps_delete_parse_tree(op); + return_ACPI_STATUS(status); +} + +/******************************************************************************* + * + * FUNCTION: acpi_ds_get_buffer_field_arguments + * + * PARAMETERS: obj_desc - A valid buffer_field object + * + * RETURN: Status. + * + * DESCRIPTION: Get buffer_field Buffer and Index. This implements the late + * evaluation of these field attributes. + * + ******************************************************************************/ + +acpi_status +acpi_ds_get_buffer_field_arguments(union acpi_operand_object *obj_desc) +{ + union acpi_operand_object *extra_desc; + struct acpi_namespace_node *node; + acpi_status status; + + ACPI_FUNCTION_TRACE_PTR(ds_get_buffer_field_arguments, obj_desc); + + if (obj_desc->common.flags & AOPOBJ_DATA_VALID) { + return_ACPI_STATUS(AE_OK); + } + + /* Get the AML pointer (method object) and buffer_field node */ + + extra_desc = acpi_ns_get_secondary_object(obj_desc); + node = obj_desc->buffer_field.node; + + ACPI_DEBUG_EXEC(acpi_ut_display_init_pathname(ACPI_TYPE_BUFFER_FIELD, + node, NULL)); + + ACPI_DEBUG_PRINT((ACPI_DB_EXEC, "[%4.4s] BufferField Arg Init\n", + acpi_ut_get_node_name(node))); + + /* Execute the AML code for the term_arg arguments */ + + status = acpi_ds_execute_arguments(node, node->parent, + extra_desc->extra.aml_length, + extra_desc->extra.aml_start); + return_ACPI_STATUS(status); +} + +/******************************************************************************* + * + * FUNCTION: acpi_ds_get_bank_field_arguments + * + * PARAMETERS: obj_desc - A valid bank_field object + * + * RETURN: Status. + * + * DESCRIPTION: Get bank_field bank_value. This implements the late + * evaluation of these field attributes. + * + ******************************************************************************/ + +acpi_status +acpi_ds_get_bank_field_arguments(union acpi_operand_object *obj_desc) +{ + union acpi_operand_object *extra_desc; + struct acpi_namespace_node *node; + acpi_status status; + + ACPI_FUNCTION_TRACE_PTR(ds_get_bank_field_arguments, obj_desc); + + if (obj_desc->common.flags & AOPOBJ_DATA_VALID) { + return_ACPI_STATUS(AE_OK); + } + + /* Get the AML pointer (method object) and bank_field node */ + + extra_desc = acpi_ns_get_secondary_object(obj_desc); + node = obj_desc->bank_field.node; + + ACPI_DEBUG_EXEC(acpi_ut_display_init_pathname + (ACPI_TYPE_LOCAL_BANK_FIELD, node, NULL)); + + ACPI_DEBUG_PRINT((ACPI_DB_EXEC, "[%4.4s] BankField Arg Init\n", + acpi_ut_get_node_name(node))); + + /* Execute the AML code for the term_arg arguments */ + + status = acpi_ds_execute_arguments(node, node->parent, + extra_desc->extra.aml_length, + extra_desc->extra.aml_start); + return_ACPI_STATUS(status); +} + +/******************************************************************************* + * + * FUNCTION: acpi_ds_get_buffer_arguments + * + * PARAMETERS: obj_desc - A valid Buffer object + * + * RETURN: Status. + * + * DESCRIPTION: Get Buffer length and initializer byte list. This implements + * the late evaluation of these attributes. + * + ******************************************************************************/ + +acpi_status acpi_ds_get_buffer_arguments(union acpi_operand_object *obj_desc) +{ + struct acpi_namespace_node *node; + acpi_status status; + + ACPI_FUNCTION_TRACE_PTR(ds_get_buffer_arguments, obj_desc); + + if (obj_desc->common.flags & AOPOBJ_DATA_VALID) { + return_ACPI_STATUS(AE_OK); + } + + /* Get the Buffer node */ + + node = obj_desc->buffer.node; + if (!node) { + ACPI_ERROR((AE_INFO, + "No pointer back to namespace node in buffer object %p", + obj_desc)); + return_ACPI_STATUS(AE_AML_INTERNAL); + } + + ACPI_DEBUG_PRINT((ACPI_DB_EXEC, "Buffer Arg Init\n")); + + /* Execute the AML code for the term_arg arguments */ + + status = acpi_ds_execute_arguments(node, node, + obj_desc->buffer.aml_length, + obj_desc->buffer.aml_start); + return_ACPI_STATUS(status); +} + +/******************************************************************************* + * + * FUNCTION: acpi_ds_get_package_arguments + * + * PARAMETERS: obj_desc - A valid Package object + * + * RETURN: Status. + * + * DESCRIPTION: Get Package length and initializer byte list. This implements + * the late evaluation of these attributes. + * + ******************************************************************************/ + +acpi_status acpi_ds_get_package_arguments(union acpi_operand_object *obj_desc) +{ + struct acpi_namespace_node *node; + acpi_status status; + + ACPI_FUNCTION_TRACE_PTR(ds_get_package_arguments, obj_desc); + + if (obj_desc->common.flags & AOPOBJ_DATA_VALID) { + return_ACPI_STATUS(AE_OK); + } + + /* Get the Package node */ + + node = obj_desc->package.node; + if (!node) { + ACPI_ERROR((AE_INFO, + "No pointer back to namespace node in package %p", + obj_desc)); + return_ACPI_STATUS(AE_AML_INTERNAL); + } + + ACPI_DEBUG_PRINT((ACPI_DB_EXEC, "Package Arg Init\n")); + + /* Execute the AML code for the term_arg arguments */ + + status = acpi_ds_execute_arguments(node, node, + obj_desc->package.aml_length, + obj_desc->package.aml_start); + return_ACPI_STATUS(status); +} + +/******************************************************************************* + * + * FUNCTION: acpi_ds_get_region_arguments + * + * PARAMETERS: obj_desc - A valid region object + * + * RETURN: Status. + * + * DESCRIPTION: Get region address and length. This implements the late + * evaluation of these region attributes. + * + ******************************************************************************/ + +acpi_status acpi_ds_get_region_arguments(union acpi_operand_object *obj_desc) +{ + struct acpi_namespace_node *node; + acpi_status status; + union acpi_operand_object *extra_desc; + + ACPI_FUNCTION_TRACE_PTR(ds_get_region_arguments, obj_desc); + + if (obj_desc->region.flags & AOPOBJ_DATA_VALID) { + return_ACPI_STATUS(AE_OK); + } + + extra_desc = acpi_ns_get_secondary_object(obj_desc); + if (!extra_desc) { + return_ACPI_STATUS(AE_NOT_EXIST); + } + + /* Get the Region node */ + + node = obj_desc->region.node; + + ACPI_DEBUG_EXEC(acpi_ut_display_init_pathname + (ACPI_TYPE_REGION, node, NULL)); + + ACPI_DEBUG_PRINT((ACPI_DB_EXEC, "[%4.4s] OpRegion Arg Init at AML %p\n", + acpi_ut_get_node_name(node), + extra_desc->extra.aml_start)); + + /* Execute the argument AML */ + + status = acpi_ds_execute_arguments(node, node->parent, + extra_desc->extra.aml_length, + extra_desc->extra.aml_start); + return_ACPI_STATUS(status); +} diff --git a/drivers/acpi/acpica/dscontrol.c b/drivers/acpi/acpica/dscontrol.c new file mode 100644 index 0000000..26c49ff --- /dev/null +++ b/drivers/acpi/acpica/dscontrol.c @@ -0,0 +1,410 @@ +/****************************************************************************** + * + * Module Name: dscontrol - Support for execution control opcodes - + * if/else/while/return + * + *****************************************************************************/ + +/* + * 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 "amlcode.h" +#include "acdispat.h" +#include "acinterp.h" + +#define _COMPONENT ACPI_DISPATCHER +ACPI_MODULE_NAME("dscontrol") + +/******************************************************************************* + * + * FUNCTION: acpi_ds_exec_begin_control_op + * + * PARAMETERS: walk_list - The list that owns the walk stack + * Op - The control Op + * + * RETURN: Status + * + * DESCRIPTION: Handles all control ops encountered during control method + * execution. + * + ******************************************************************************/ +acpi_status +acpi_ds_exec_begin_control_op(struct acpi_walk_state *walk_state, + union acpi_parse_object *op) +{ + acpi_status status = AE_OK; + union acpi_generic_state *control_state; + + ACPI_FUNCTION_NAME(ds_exec_begin_control_op); + + ACPI_DEBUG_PRINT((ACPI_DB_DISPATCH, "Op=%p Opcode=%2.2X State=%p\n", + op, op->common.aml_opcode, walk_state)); + + switch (op->common.aml_opcode) { + case AML_WHILE_OP: + + /* + * If this is an additional iteration of a while loop, continue. + * There is no need to allocate a new control state. + */ + if (walk_state->control_state) { + if (walk_state->control_state->control. + aml_predicate_start == + (walk_state->parser_state.aml - 1)) { + + /* Reset the state to start-of-loop */ + + walk_state->control_state->common.state = + ACPI_CONTROL_CONDITIONAL_EXECUTING; + break; + } + } + + /*lint -fallthrough */ + + case AML_IF_OP: + + /* + * IF/WHILE: Create a new control state to manage these + * constructs. We need to manage these as a stack, in order + * to handle nesting. + */ + control_state = acpi_ut_create_control_state(); + if (!control_state) { + status = AE_NO_MEMORY; + break; + } + /* + * Save a pointer to the predicate for multiple executions + * of a loop + */ + control_state->control.aml_predicate_start = + walk_state->parser_state.aml - 1; + control_state->control.package_end = + walk_state->parser_state.pkg_end; + control_state->control.opcode = op->common.aml_opcode; + + /* Push the control state on this walk's control stack */ + + acpi_ut_push_generic_state(&walk_state->control_state, + control_state); + break; + + case AML_ELSE_OP: + + /* Predicate is in the state object */ + /* If predicate is true, the IF was executed, ignore ELSE part */ + + if (walk_state->last_predicate) { + status = AE_CTRL_TRUE; + } + + break; + + case AML_RETURN_OP: + + break; + + default: + break; + } + + return (status); +} + +/******************************************************************************* + * + * FUNCTION: acpi_ds_exec_end_control_op + * + * PARAMETERS: walk_list - The list that owns the walk stack + * Op - The control Op + * + * RETURN: Status + * + * DESCRIPTION: Handles all control ops encountered during control method + * execution. + * + ******************************************************************************/ + +acpi_status +acpi_ds_exec_end_control_op(struct acpi_walk_state * walk_state, + union acpi_parse_object * op) +{ + acpi_status status = AE_OK; + union acpi_generic_state *control_state; + + ACPI_FUNCTION_NAME(ds_exec_end_control_op); + + switch (op->common.aml_opcode) { + case AML_IF_OP: + + ACPI_DEBUG_PRINT((ACPI_DB_DISPATCH, "[IF_OP] Op=%p\n", op)); + + /* + * Save the result of the predicate in case there is an + * ELSE to come + */ + walk_state->last_predicate = + (u8)walk_state->control_state->common.value; + + /* + * Pop the control state that was created at the start + * of the IF and free it + */ + control_state = + acpi_ut_pop_generic_state(&walk_state->control_state); + acpi_ut_delete_generic_state(control_state); + break; + + case AML_ELSE_OP: + + break; + + case AML_WHILE_OP: + + ACPI_DEBUG_PRINT((ACPI_DB_DISPATCH, "[WHILE_OP] Op=%p\n", op)); + + control_state = walk_state->control_state; + if (control_state->common.value) { + + /* Predicate was true, the body of the loop was just executed */ + + /* + * This loop counter mechanism allows the interpreter to escape + * possibly infinite loops. This can occur in poorly written AML + * when the hardware does not respond within a while loop and the + * loop does not implement a timeout. + */ + control_state->control.loop_count++; + if (control_state->control.loop_count > + ACPI_MAX_LOOP_ITERATIONS) { + status = AE_AML_INFINITE_LOOP; + break; + } + + /* + * Go back and evaluate the predicate and maybe execute the loop + * another time + */ + status = AE_CTRL_PENDING; + walk_state->aml_last_while = + control_state->control.aml_predicate_start; + break; + } + + /* Predicate was false, terminate this while loop */ + + ACPI_DEBUG_PRINT((ACPI_DB_DISPATCH, + "[WHILE_OP] termination! Op=%p\n", op)); + + /* Pop this control state and free it */ + + control_state = + acpi_ut_pop_generic_state(&walk_state->control_state); + acpi_ut_delete_generic_state(control_state); + break; + + case AML_RETURN_OP: + + ACPI_DEBUG_PRINT((ACPI_DB_DISPATCH, + "[RETURN_OP] Op=%p Arg=%p\n", op, + op->common.value.arg)); + + /* + * One optional operand -- the return value + * It can be either an immediate operand or a result that + * has been bubbled up the tree + */ + if (op->common.value.arg) { + + /* Since we have a real Return(), delete any implicit return */ + + acpi_ds_clear_implicit_return(walk_state); + + /* Return statement has an immediate operand */ + + status = + acpi_ds_create_operands(walk_state, + op->common.value.arg); + if (ACPI_FAILURE(status)) { + return (status); + } + + /* + * If value being returned is a Reference (such as + * an arg or local), resolve it now because it may + * cease to exist at the end of the method. + */ + status = + acpi_ex_resolve_to_value(&walk_state->operands[0], + walk_state); + if (ACPI_FAILURE(status)) { + return (status); + } + + /* + * Get the return value and save as the last result + * value. This is the only place where walk_state->return_desc + * is set to anything other than zero! + */ + walk_state->return_desc = walk_state->operands[0]; + } else if (walk_state->result_count) { + + /* Since we have a real Return(), delete any implicit return */ + + acpi_ds_clear_implicit_return(walk_state); + + /* + * The return value has come from a previous calculation. + * + * If value being returned is a Reference (such as + * an arg or local), resolve it now because it may + * cease to exist at the end of the method. + * + * Allow references created by the Index operator to return + * unchanged. + */ + if ((ACPI_GET_DESCRIPTOR_TYPE + (walk_state->results->results.obj_desc[0]) == + ACPI_DESC_TYPE_OPERAND) + && ((walk_state->results->results.obj_desc[0])-> + common.type == ACPI_TYPE_LOCAL_REFERENCE) + && ((walk_state->results->results.obj_desc[0])-> + reference.class != ACPI_REFCLASS_INDEX)) { + status = + acpi_ex_resolve_to_value(&walk_state-> + results->results. + obj_desc[0], + walk_state); + if (ACPI_FAILURE(status)) { + return (status); + } + } + + walk_state->return_desc = + walk_state->results->results.obj_desc[0]; + } else { + /* No return operand */ + + if (walk_state->num_operands) { + acpi_ut_remove_reference(walk_state-> + operands[0]); + } + + walk_state->operands[0] = NULL; + walk_state->num_operands = 0; + walk_state->return_desc = NULL; + } + + ACPI_DEBUG_PRINT((ACPI_DB_DISPATCH, + "Completed RETURN_OP State=%p, RetVal=%p\n", + walk_state, walk_state->return_desc)); + + /* End the control method execution right now */ + + status = AE_CTRL_TERMINATE; + break; + + case AML_NOOP_OP: + + /* Just do nothing! */ + break; + + case AML_BREAK_POINT_OP: + + /* + * Set the single-step flag. This will cause the debugger (if present) + * to break to the console within the AML debugger at the start of the + * next AML instruction. + */ + ACPI_DEBUGGER_EXEC(acpi_gbl_cm_single_step = TRUE); + ACPI_DEBUGGER_EXEC(acpi_os_printf + ("**break** Executed AML BreakPoint opcode\n")); + + /* Call to the OSL in case OS wants a piece of the action */ + + status = acpi_os_signal(ACPI_SIGNAL_BREAKPOINT, + "Executed AML Breakpoint opcode"); + break; + + case AML_BREAK_OP: + case AML_CONTINUE_OP: /* ACPI 2.0 */ + + /* Pop and delete control states until we find a while */ + + while (walk_state->control_state && + (walk_state->control_state->control.opcode != + AML_WHILE_OP)) { + control_state = + acpi_ut_pop_generic_state(&walk_state-> + control_state); + acpi_ut_delete_generic_state(control_state); + } + + /* No while found? */ + + if (!walk_state->control_state) { + return (AE_AML_NO_WHILE); + } + + /* Was: walk_state->aml_last_while = walk_state->control_state->Control.aml_predicate_start; */ + + walk_state->aml_last_while = + walk_state->control_state->control.package_end; + + /* Return status depending on opcode */ + + if (op->common.aml_opcode == AML_BREAK_OP) { + status = AE_CTRL_BREAK; + } else { + status = AE_CTRL_CONTINUE; + } + break; + + default: + + ACPI_ERROR((AE_INFO, "Unknown control opcode=0x%X Op=%p", + op->common.aml_opcode, op)); + + status = AE_AML_BAD_OPCODE; + break; + } + + return (status); +} diff --git a/drivers/acpi/acpica/dsopcode.c b/drivers/acpi/acpica/dsopcode.c index bbecf29..c627a28 100644 --- a/drivers/acpi/acpica/dsopcode.c +++ b/drivers/acpi/acpica/dsopcode.c @@ -1,7 +1,6 @@ /****************************************************************************** * - * Module Name: dsopcode - Dispatcher Op Region support and handling of - * "control" opcodes + * Module Name: dsopcode - Dispatcher suport for regions and fields * *****************************************************************************/ @@ -57,11 +56,6 @@ ACPI_MODULE_NAME("dsopcode") /* Local prototypes */ static acpi_status -acpi_ds_execute_arguments(struct acpi_namespace_node *node, - struct acpi_namespace_node *scope_node, - u32 aml_length, u8 * aml_start); - -static acpi_status acpi_ds_init_buffer_field(u16 aml_opcode, union acpi_operand_object *obj_desc, union acpi_operand_object *buffer_desc, @@ -71,361 +65,6 @@ acpi_ds_init_buffer_field(u16 aml_opcode, /******************************************************************************* * - * FUNCTION: acpi_ds_execute_arguments - * - * PARAMETERS: Node - Object NS node - * scope_node - Parent NS node - * aml_length - Length of executable AML - * aml_start - Pointer to the AML - * - * RETURN: Status. - * - * DESCRIPTION: Late (deferred) execution of region or field arguments - * - ******************************************************************************/ - -static acpi_status -acpi_ds_execute_arguments(struct acpi_namespace_node *node, - struct acpi_namespace_node *scope_node, - u32 aml_length, u8 * aml_start) -{ - acpi_status status; - union acpi_parse_object *op; - struct acpi_walk_state *walk_state; - - ACPI_FUNCTION_TRACE(ds_execute_arguments); - - /* - * Allocate a new parser op to be the root of the parsed tree - */ - op = acpi_ps_alloc_op(AML_INT_EVAL_SUBTREE_OP); - if (!op) { - return_ACPI_STATUS(AE_NO_MEMORY); - } - - /* Save the Node for use in acpi_ps_parse_aml */ - - op->common.node = scope_node; - - /* Create and initialize a new parser state */ - - walk_state = acpi_ds_create_walk_state(0, NULL, NULL, NULL); - if (!walk_state) { - status = AE_NO_MEMORY; - goto cleanup; - } - - status = acpi_ds_init_aml_walk(walk_state, op, NULL, aml_start, - aml_length, NULL, ACPI_IMODE_LOAD_PASS1); - if (ACPI_FAILURE(status)) { - acpi_ds_delete_walk_state(walk_state); - goto cleanup; - } - - /* Mark this parse as a deferred opcode */ - - walk_state->parse_flags = ACPI_PARSE_DEFERRED_OP; - walk_state->deferred_node = node; - - /* Pass1: Parse the entire declaration */ - - status = acpi_ps_parse_aml(walk_state); - if (ACPI_FAILURE(status)) { - goto cleanup; - } - - /* Get and init the Op created above */ - - op->common.node = node; - acpi_ps_delete_parse_tree(op); - - /* Evaluate the deferred arguments */ - - op = acpi_ps_alloc_op(AML_INT_EVAL_SUBTREE_OP); - if (!op) { - return_ACPI_STATUS(AE_NO_MEMORY); - } - - op->common.node = scope_node; - - /* Create and initialize a new parser state */ - - walk_state = acpi_ds_create_walk_state(0, NULL, NULL, NULL); - if (!walk_state) { - status = AE_NO_MEMORY; - goto cleanup; - } - - /* Execute the opcode and arguments */ - - status = acpi_ds_init_aml_walk(walk_state, op, NULL, aml_start, - aml_length, NULL, ACPI_IMODE_EXECUTE); - if (ACPI_FAILURE(status)) { - acpi_ds_delete_walk_state(walk_state); - goto cleanup; - } - - /* Mark this execution as a deferred opcode */ - - walk_state->deferred_node = node; - status = acpi_ps_parse_aml(walk_state); - - cleanup: - acpi_ps_delete_parse_tree(op); - return_ACPI_STATUS(status); -} - -/******************************************************************************* - * - * FUNCTION: acpi_ds_get_buffer_field_arguments - * - * PARAMETERS: obj_desc - A valid buffer_field object - * - * RETURN: Status. - * - * DESCRIPTION: Get buffer_field Buffer and Index. This implements the late - * evaluation of these field attributes. - * - ******************************************************************************/ - -acpi_status -acpi_ds_get_buffer_field_arguments(union acpi_operand_object *obj_desc) -{ - union acpi_operand_object *extra_desc; - struct acpi_namespace_node *node; - acpi_status status; - - ACPI_FUNCTION_TRACE_PTR(ds_get_buffer_field_arguments, obj_desc); - - if (obj_desc->common.flags & AOPOBJ_DATA_VALID) { - return_ACPI_STATUS(AE_OK); - } - - /* Get the AML pointer (method object) and buffer_field node */ - - extra_desc = acpi_ns_get_secondary_object(obj_desc); - node = obj_desc->buffer_field.node; - - ACPI_DEBUG_EXEC(acpi_ut_display_init_pathname - (ACPI_TYPE_BUFFER_FIELD, node, NULL)); - ACPI_DEBUG_PRINT((ACPI_DB_EXEC, "[%4.4s] BufferField Arg Init\n", - acpi_ut_get_node_name(node))); - - /* Execute the AML code for the term_arg arguments */ - - status = acpi_ds_execute_arguments(node, node->parent, - extra_desc->extra.aml_length, - extra_desc->extra.aml_start); - return_ACPI_STATUS(status); -} - -/******************************************************************************* - * - * FUNCTION: acpi_ds_get_bank_field_arguments - * - * PARAMETERS: obj_desc - A valid bank_field object - * - * RETURN: Status. - * - * DESCRIPTION: Get bank_field bank_value. This implements the late - * evaluation of these field attributes. - * - ******************************************************************************/ - -acpi_status -acpi_ds_get_bank_field_arguments(union acpi_operand_object *obj_desc) -{ - union acpi_operand_object *extra_desc; - struct acpi_namespace_node *node; - acpi_status status; - - ACPI_FUNCTION_TRACE_PTR(ds_get_bank_field_arguments, obj_desc); - - if (obj_desc->common.flags & AOPOBJ_DATA_VALID) { - return_ACPI_STATUS(AE_OK); - } - - /* Get the AML pointer (method object) and bank_field node */ - - extra_desc = acpi_ns_get_secondary_object(obj_desc); - node = obj_desc->bank_field.node; - - ACPI_DEBUG_EXEC(acpi_ut_display_init_pathname - (ACPI_TYPE_LOCAL_BANK_FIELD, node, NULL)); - ACPI_DEBUG_PRINT((ACPI_DB_EXEC, "[%4.4s] BankField Arg Init\n", - acpi_ut_get_node_name(node))); - - /* Execute the AML code for the term_arg arguments */ - - status = acpi_ds_execute_arguments(node, node->parent, - extra_desc->extra.aml_length, - extra_desc->extra.aml_start); - return_ACPI_STATUS(status); -} - -/******************************************************************************* - * - * FUNCTION: acpi_ds_get_buffer_arguments - * - * PARAMETERS: obj_desc - A valid Buffer object - * - * RETURN: Status. - * - * DESCRIPTION: Get Buffer length and initializer byte list. This implements - * the late evaluation of these attributes. - * - ******************************************************************************/ - -acpi_status acpi_ds_get_buffer_arguments(union acpi_operand_object *obj_desc) -{ - struct acpi_namespace_node *node; - acpi_status status; - - ACPI_FUNCTION_TRACE_PTR(ds_get_buffer_arguments, obj_desc); - - if (obj_desc->common.flags & AOPOBJ_DATA_VALID) { - return_ACPI_STATUS(AE_OK); - } - - /* Get the Buffer node */ - - node = obj_desc->buffer.node; - if (!node) { - ACPI_ERROR((AE_INFO, - "No pointer back to namespace node in buffer object %p", - obj_desc)); - return_ACPI_STATUS(AE_AML_INTERNAL); - } - - ACPI_DEBUG_PRINT((ACPI_DB_EXEC, "Buffer Arg Init\n")); - - /* Execute the AML code for the term_arg arguments */ - - status = acpi_ds_execute_arguments(node, node, - obj_desc->buffer.aml_length, - obj_desc->buffer.aml_start); - return_ACPI_STATUS(status); -} - -/******************************************************************************* - * - * FUNCTION: acpi_ds_get_package_arguments - * - * PARAMETERS: obj_desc - A valid Package object - * - * RETURN: Status. - * - * DESCRIPTION: Get Package length and initializer byte list. This implements - * the late evaluation of these attributes. - * - ******************************************************************************/ - -acpi_status acpi_ds_get_package_arguments(union acpi_operand_object *obj_desc) -{ - struct acpi_namespace_node *node; - acpi_status status; - - ACPI_FUNCTION_TRACE_PTR(ds_get_package_arguments, obj_desc); - - if (obj_desc->common.flags & AOPOBJ_DATA_VALID) { - return_ACPI_STATUS(AE_OK); - } - - /* Get the Package node */ - - node = obj_desc->package.node; - if (!node) { - ACPI_ERROR((AE_INFO, - "No pointer back to namespace node in package %p", - obj_desc)); - return_ACPI_STATUS(AE_AML_INTERNAL); - } - - ACPI_DEBUG_PRINT((ACPI_DB_EXEC, "Package Arg Init\n")); - - /* Execute the AML code for the term_arg arguments */ - - status = acpi_ds_execute_arguments(node, node, - obj_desc->package.aml_length, - obj_desc->package.aml_start); - return_ACPI_STATUS(status); -} - -/***************************************************************************** - * - * FUNCTION: acpi_ds_get_region_arguments - * - * PARAMETERS: obj_desc - A valid region object - * - * RETURN: Status. - * - * DESCRIPTION: Get region address and length. This implements the late - * evaluation of these region attributes. - * - ****************************************************************************/ - -acpi_status acpi_ds_get_region_arguments(union acpi_operand_object *obj_desc) -{ - struct acpi_namespace_node *node; - acpi_status status; - union acpi_operand_object *extra_desc; - - ACPI_FUNCTION_TRACE_PTR(ds_get_region_arguments, obj_desc); - - if (obj_desc->region.flags & AOPOBJ_DATA_VALID) { - return_ACPI_STATUS(AE_OK); - } - - extra_desc = acpi_ns_get_secondary_object(obj_desc); - if (!extra_desc) { - return_ACPI_STATUS(AE_NOT_EXIST); - } - - /* Get the Region node */ - - node = obj_desc->region.node; - - ACPI_DEBUG_EXEC(acpi_ut_display_init_pathname - (ACPI_TYPE_REGION, node, NULL)); - - ACPI_DEBUG_PRINT((ACPI_DB_EXEC, "[%4.4s] OpRegion Arg Init at AML %p\n", - acpi_ut_get_node_name(node), - extra_desc->extra.aml_start)); - - /* Execute the argument AML */ - - status = acpi_ds_execute_arguments(node, node->parent, - extra_desc->extra.aml_length, - extra_desc->extra.aml_start); - if (ACPI_FAILURE(status)) { - return_ACPI_STATUS(status); - } - - /* Validate the region address/length via the host OS */ - - status = acpi_os_validate_address(obj_desc->region.space_id, - obj_desc->region.address, - (acpi_size) obj_desc->region.length, - acpi_ut_get_node_name(node)); - - if (ACPI_FAILURE(status)) { - /* - * Invalid address/length. We will emit an error message and mark - * the region as invalid, so that it will cause an additional error if - * it is ever used. Then return AE_OK. - */ - ACPI_EXCEPTION((AE_INFO, status, - "During address validation of OpRegion [%4.4s]", - node->name.ascii)); - obj_desc->common.flags |= AOPOBJ_INVALID; - status = AE_OK; - } - - return_ACPI_STATUS(status); -} - -/******************************************************************************* - * * FUNCTION: acpi_ds_initialize_region * * PARAMETERS: obj_handle - Region namespace node @@ -826,8 +465,9 @@ acpi_ds_eval_region_operands(struct acpi_walk_state *walk_state, * * RETURN: Status * - * DESCRIPTION: Get region address and length - * Called from acpi_ds_exec_end_op during data_table_region parse tree walk + * DESCRIPTION: Get region address and length. + * Called from acpi_ds_exec_end_op during data_table_region parse + * tree walk. * ******************************************************************************/ @@ -1114,360 +754,3 @@ acpi_ds_eval_bank_field_operands(struct acpi_walk_state *walk_state, acpi_ut_remove_reference(operand_desc); return_ACPI_STATUS(status); } - -/******************************************************************************* - * - * FUNCTION: acpi_ds_exec_begin_control_op - * - * PARAMETERS: walk_list - The list that owns the walk stack - * Op - The control Op - * - * RETURN: Status - * - * DESCRIPTION: Handles all control ops encountered during control method - * execution. - * - ******************************************************************************/ - -acpi_status -acpi_ds_exec_begin_control_op(struct acpi_walk_state *walk_state, - union acpi_parse_object *op) -{ - acpi_status status = AE_OK; - union acpi_generic_state *control_state; - - ACPI_FUNCTION_NAME(ds_exec_begin_control_op); - - ACPI_DEBUG_PRINT((ACPI_DB_DISPATCH, "Op=%p Opcode=%2.2X State=%p\n", op, - op->common.aml_opcode, walk_state)); - - switch (op->common.aml_opcode) { - case AML_WHILE_OP: - - /* - * If this is an additional iteration of a while loop, continue. - * There is no need to allocate a new control state. - */ - if (walk_state->control_state) { - if (walk_state->control_state->control.aml_predicate_start - == (walk_state->parser_state.aml - 1)) { - - /* Reset the state to start-of-loop */ - - walk_state->control_state->common.state = - ACPI_CONTROL_CONDITIONAL_EXECUTING; - break; - } - } - - /*lint -fallthrough */ - - case AML_IF_OP: - - /* - * IF/WHILE: Create a new control state to manage these - * constructs. We need to manage these as a stack, in order - * to handle nesting. - */ - control_state = acpi_ut_create_control_state(); - if (!control_state) { - status = AE_NO_MEMORY; - break; - } - /* - * Save a pointer to the predicate for multiple executions - * of a loop - */ - control_state->control.aml_predicate_start = - walk_state->parser_state.aml - 1; - control_state->control.package_end = - walk_state->parser_state.pkg_end; - control_state->control.opcode = op->common.aml_opcode; - - /* Push the control state on this walk's control stack */ - - acpi_ut_push_generic_state(&walk_state->control_state, - control_state); - break; - - case AML_ELSE_OP: - - /* Predicate is in the state object */ - /* If predicate is true, the IF was executed, ignore ELSE part */ - - if (walk_state->last_predicate) { - status = AE_CTRL_TRUE; - } - - break; - - case AML_RETURN_OP: - - break; - - default: - break; - } - - return (status); -} - -/******************************************************************************* - * - * FUNCTION: acpi_ds_exec_end_control_op - * - * PARAMETERS: walk_list - The list that owns the walk stack - * Op - The control Op - * - * RETURN: Status - * - * DESCRIPTION: Handles all control ops encountered during control method - * execution. - * - ******************************************************************************/ - -acpi_status -acpi_ds_exec_end_control_op(struct acpi_walk_state * walk_state, - union acpi_parse_object * op) -{ - acpi_status status = AE_OK; - union acpi_generic_state *control_state; - - ACPI_FUNCTION_NAME(ds_exec_end_control_op); - - switch (op->common.aml_opcode) { - case AML_IF_OP: - - ACPI_DEBUG_PRINT((ACPI_DB_DISPATCH, "[IF_OP] Op=%p\n", op)); - - /* - * Save the result of the predicate in case there is an - * ELSE to come - */ - walk_state->last_predicate = - (u8) walk_state->control_state->common.value; - - /* - * Pop the control state that was created at the start - * of the IF and free it - */ - control_state = - acpi_ut_pop_generic_state(&walk_state->control_state); - acpi_ut_delete_generic_state(control_state); - break; - - case AML_ELSE_OP: - - break; - - case AML_WHILE_OP: - - ACPI_DEBUG_PRINT((ACPI_DB_DISPATCH, "[WHILE_OP] Op=%p\n", op)); - - control_state = walk_state->control_state; - if (control_state->common.value) { - - /* Predicate was true, the body of the loop was just executed */ - - /* - * This loop counter mechanism allows the interpreter to escape - * possibly infinite loops. This can occur in poorly written AML - * when the hardware does not respond within a while loop and the - * loop does not implement a timeout. - */ - control_state->control.loop_count++; - if (control_state->control.loop_count > - ACPI_MAX_LOOP_ITERATIONS) { - status = AE_AML_INFINITE_LOOP; - break; - } - - /* - * Go back and evaluate the predicate and maybe execute the loop - * another time - */ - status = AE_CTRL_PENDING; - walk_state->aml_last_while = - control_state->control.aml_predicate_start; - break; - } - - /* Predicate was false, terminate this while loop */ - - ACPI_DEBUG_PRINT((ACPI_DB_DISPATCH, - "[WHILE_OP] termination! Op=%p\n", op)); - - /* Pop this control state and free it */ - - control_state = - acpi_ut_pop_generic_state(&walk_state->control_state); - acpi_ut_delete_generic_state(control_state); - break; - - case AML_RETURN_OP: - - ACPI_DEBUG_PRINT((ACPI_DB_DISPATCH, - "[RETURN_OP] Op=%p Arg=%p\n", op, - op->common.value.arg)); - - /* - * One optional operand -- the return value - * It can be either an immediate operand or a result that - * has been bubbled up the tree - */ - if (op->common.value.arg) { - - /* Since we have a real Return(), delete any implicit return */ - - acpi_ds_clear_implicit_return(walk_state); - - /* Return statement has an immediate operand */ - - status = - acpi_ds_create_operands(walk_state, - op->common.value.arg); - if (ACPI_FAILURE(status)) { - return (status); - } - - /* - * If value being returned is a Reference (such as - * an arg or local), resolve it now because it may - * cease to exist at the end of the method. - */ - status = - acpi_ex_resolve_to_value(&walk_state->operands[0], - walk_state); - if (ACPI_FAILURE(status)) { - return (status); - } - - /* - * Get the return value and save as the last result - * value. This is the only place where walk_state->return_desc - * is set to anything other than zero! - */ - walk_state->return_desc = walk_state->operands[0]; - } else if (walk_state->result_count) { - - /* Since we have a real Return(), delete any implicit return */ - - acpi_ds_clear_implicit_return(walk_state); - - /* - * The return value has come from a previous calculation. - * - * If value being returned is a Reference (such as - * an arg or local), resolve it now because it may - * cease to exist at the end of the method. - * - * Allow references created by the Index operator to return unchanged. - */ - if ((ACPI_GET_DESCRIPTOR_TYPE - (walk_state->results->results.obj_desc[0]) == - ACPI_DESC_TYPE_OPERAND) - && ((walk_state->results->results.obj_desc[0])-> - common.type == ACPI_TYPE_LOCAL_REFERENCE) - && ((walk_state->results->results.obj_desc[0])-> - reference.class != ACPI_REFCLASS_INDEX)) { - status = - acpi_ex_resolve_to_value(&walk_state-> - results->results. - obj_desc[0], - walk_state); - if (ACPI_FAILURE(status)) { - return (status); - } - } - - walk_state->return_desc = - walk_state->results->results.obj_desc[0]; - } else { - /* No return operand */ - - if (walk_state->num_operands) { - acpi_ut_remove_reference(walk_state-> - operands[0]); - } - - walk_state->operands[0] = NULL; - walk_state->num_operands = 0; - walk_state->return_desc = NULL; - } - - ACPI_DEBUG_PRINT((ACPI_DB_DISPATCH, - "Completed RETURN_OP State=%p, RetVal=%p\n", - walk_state, walk_state->return_desc)); - - /* End the control method execution right now */ - - status = AE_CTRL_TERMINATE; - break; - - case AML_NOOP_OP: - - /* Just do nothing! */ - break; - - case AML_BREAK_POINT_OP: - - /* - * Set the single-step flag. This will cause the debugger (if present) - * to break to the console within the AML debugger at the start of the - * next AML instruction. - */ - ACPI_DEBUGGER_EXEC(acpi_gbl_cm_single_step = TRUE); - ACPI_DEBUGGER_EXEC(acpi_os_printf - ("**break** Executed AML BreakPoint opcode\n")); - - /* Call to the OSL in case OS wants a piece of the action */ - - status = acpi_os_signal(ACPI_SIGNAL_BREAKPOINT, - "Executed AML Breakpoint opcode"); - break; - - case AML_BREAK_OP: - case AML_CONTINUE_OP: /* ACPI 2.0 */ - - /* Pop and delete control states until we find a while */ - - while (walk_state->control_state && - (walk_state->control_state->control.opcode != - AML_WHILE_OP)) { - control_state = - acpi_ut_pop_generic_state(&walk_state-> - control_state); - acpi_ut_delete_generic_state(control_state); - } - - /* No while found? */ - - if (!walk_state->control_state) { - return (AE_AML_NO_WHILE); - } - - /* Was: walk_state->aml_last_while = walk_state->control_state->Control.aml_predicate_start; */ - - walk_state->aml_last_while = - walk_state->control_state->control.package_end; - - /* Return status depending on opcode */ - - if (op->common.aml_opcode == AML_BREAK_OP) { - status = AE_CTRL_BREAK; - } else { - status = AE_CTRL_CONTINUE; - } - break; - - default: - - ACPI_ERROR((AE_INFO, "Unknown control opcode=0x%X Op=%p", - op->common.aml_opcode, op)); - - status = AE_AML_BAD_OPCODE; - break; - } - - return (status); -} diff --git a/drivers/acpi/acpica/dswload.c b/drivers/acpi/acpica/dswload.c index 52566ff..324acec 100644 --- a/drivers/acpi/acpica/dswload.c +++ b/drivers/acpi/acpica/dswload.c @@ -1,6 +1,6 @@ /****************************************************************************** * - * Module Name: dswload - Dispatcher namespace load callbacks + * Module Name: dswload - Dispatcher first pass namespace load callbacks * *****************************************************************************/ @@ -48,7 +48,6 @@ #include "acdispat.h" #include "acinterp.h" #include "acnamesp.h" -#include "acevents.h" #ifdef ACPI_ASL_COMPILER #include <acpi/acdisasm.h> @@ -451,7 +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); @@ -537,670 +536,3 @@ acpi_status acpi_ds_load1_end_op(struct acpi_walk_state *walk_state) return_ACPI_STATUS(status); } - -/******************************************************************************* - * - * FUNCTION: acpi_ds_load2_begin_op - * - * PARAMETERS: walk_state - Current state of the parse tree walk - * out_op - Wher to return op if a new one is created - * - * RETURN: Status - * - * DESCRIPTION: Descending callback used during the loading of ACPI tables. - * - ******************************************************************************/ - -acpi_status -acpi_ds_load2_begin_op(struct acpi_walk_state *walk_state, - union acpi_parse_object **out_op) -{ - union acpi_parse_object *op; - struct acpi_namespace_node *node; - acpi_status status; - acpi_object_type object_type; - char *buffer_ptr; - u32 flags; - - ACPI_FUNCTION_TRACE(ds_load2_begin_op); - - op = walk_state->op; - ACPI_DEBUG_PRINT((ACPI_DB_DISPATCH, "Op=%p State=%p\n", op, - walk_state)); - - if (op) { - if ((walk_state->control_state) && - (walk_state->control_state->common.state == - ACPI_CONTROL_CONDITIONAL_EXECUTING)) { - - /* We are executing a while loop outside of a method */ - - status = acpi_ds_exec_begin_op(walk_state, out_op); - return_ACPI_STATUS(status); - } - - /* We only care about Namespace opcodes here */ - - if ((!(walk_state->op_info->flags & AML_NSOPCODE) && - (walk_state->opcode != AML_INT_NAMEPATH_OP)) || - (!(walk_state->op_info->flags & AML_NAMED))) { - return_ACPI_STATUS(AE_OK); - } - - /* Get the name we are going to enter or lookup in the namespace */ - - if (walk_state->opcode == AML_INT_NAMEPATH_OP) { - - /* For Namepath op, get the path string */ - - buffer_ptr = op->common.value.string; - if (!buffer_ptr) { - - /* No name, just exit */ - - return_ACPI_STATUS(AE_OK); - } - } else { - /* Get name from the op */ - - buffer_ptr = ACPI_CAST_PTR(char, &op->named.name); - } - } else { - /* Get the namestring from the raw AML */ - - buffer_ptr = - acpi_ps_get_next_namestring(&walk_state->parser_state); - } - - /* Map the opcode into an internal object type */ - - object_type = walk_state->op_info->object_type; - - ACPI_DEBUG_PRINT((ACPI_DB_DISPATCH, - "State=%p Op=%p Type=%X\n", walk_state, op, - object_type)); - - switch (walk_state->opcode) { - case AML_FIELD_OP: - case AML_BANK_FIELD_OP: - case AML_INDEX_FIELD_OP: - - node = NULL; - status = AE_OK; - break; - - case AML_INT_NAMEPATH_OP: - /* - * The name_path is an object reference to an existing object. - * Don't enter the name into the namespace, but look it up - * for use later. - */ - status = - acpi_ns_lookup(walk_state->scope_info, buffer_ptr, - object_type, ACPI_IMODE_EXECUTE, - ACPI_NS_SEARCH_PARENT, walk_state, &(node)); - break; - - case AML_SCOPE_OP: - - /* Special case for Scope(\) -> refers to the Root node */ - - if (op && (op->named.node == acpi_gbl_root_node)) { - node = op->named.node; - - status = - acpi_ds_scope_stack_push(node, object_type, - walk_state); - if (ACPI_FAILURE(status)) { - return_ACPI_STATUS(status); - } - } else { - /* - * The Path is an object reference to an existing object. - * Don't enter the name into the namespace, but look it up - * for use later. - */ - status = - acpi_ns_lookup(walk_state->scope_info, buffer_ptr, - object_type, ACPI_IMODE_EXECUTE, - ACPI_NS_SEARCH_PARENT, walk_state, - &(node)); - if (ACPI_FAILURE(status)) { -#ifdef ACPI_ASL_COMPILER - if (status == AE_NOT_FOUND) { - status = AE_OK; - } else { - ACPI_ERROR_NAMESPACE(buffer_ptr, - status); - } -#else - ACPI_ERROR_NAMESPACE(buffer_ptr, status); -#endif - return_ACPI_STATUS(status); - } - } - - /* - * We must check to make sure that the target is - * one of the opcodes that actually opens a scope - */ - switch (node->type) { - case ACPI_TYPE_ANY: - case ACPI_TYPE_LOCAL_SCOPE: /* Scope */ - case ACPI_TYPE_DEVICE: - case ACPI_TYPE_POWER: - case ACPI_TYPE_PROCESSOR: - case ACPI_TYPE_THERMAL: - - /* These are acceptable types */ - break; - - case ACPI_TYPE_INTEGER: - case ACPI_TYPE_STRING: - case ACPI_TYPE_BUFFER: - - /* - * These types we will allow, but we will change the type. - * This enables some existing code of the form: - * - * Name (DEB, 0) - * Scope (DEB) { ... } - */ - ACPI_WARNING((AE_INFO, - "Type override - [%4.4s] had invalid type (%s) " - "for Scope operator, changed to type ANY\n", - acpi_ut_get_node_name(node), - acpi_ut_get_type_name(node->type))); - - node->type = ACPI_TYPE_ANY; - walk_state->scope_info->common.value = ACPI_TYPE_ANY; - break; - - default: - - /* All other types are an error */ - - ACPI_ERROR((AE_INFO, - "Invalid type (%s) for target of " - "Scope operator [%4.4s] (Cannot override)", - acpi_ut_get_type_name(node->type), - acpi_ut_get_node_name(node))); - - return (AE_AML_OPERAND_TYPE); - } - break; - - default: - - /* All other opcodes */ - - if (op && op->common.node) { - - /* This op/node was previously entered into the namespace */ - - node = op->common.node; - - if (acpi_ns_opens_scope(object_type)) { - status = - acpi_ds_scope_stack_push(node, object_type, - walk_state); - if (ACPI_FAILURE(status)) { - return_ACPI_STATUS(status); - } - } - - return_ACPI_STATUS(AE_OK); - } - - /* - * Enter the named type into the internal namespace. We enter the name - * as we go downward in the parse tree. Any necessary subobjects that - * involve arguments to the opcode must be created as we go back up the - * parse tree later. - * - * Note: Name may already exist if we are executing a deferred opcode. - */ - if (walk_state->deferred_node) { - - /* This name is already in the namespace, get the node */ - - node = walk_state->deferred_node; - status = AE_OK; - break; - } - - flags = ACPI_NS_NO_UPSEARCH; - if (walk_state->pass_number == ACPI_IMODE_EXECUTE) { - - /* Execution mode, node cannot already exist, node is temporary */ - - flags |= ACPI_NS_ERROR_IF_FOUND; - - if (! - (walk_state-> - parse_flags & ACPI_PARSE_MODULE_LEVEL)) { - flags |= ACPI_NS_TEMPORARY; - } - } - - /* Add new entry or lookup existing entry */ - - status = - acpi_ns_lookup(walk_state->scope_info, buffer_ptr, - object_type, ACPI_IMODE_LOAD_PASS2, flags, - walk_state, &node); - - if (ACPI_SUCCESS(status) && (flags & ACPI_NS_TEMPORARY)) { - ACPI_DEBUG_PRINT((ACPI_DB_DISPATCH, - "***New Node [%4.4s] %p is temporary\n", - acpi_ut_get_node_name(node), node)); - } - break; - } - - if (ACPI_FAILURE(status)) { - ACPI_ERROR_NAMESPACE(buffer_ptr, status); - return_ACPI_STATUS(status); - } - - if (!op) { - - /* Create a new op */ - - op = acpi_ps_alloc_op(walk_state->opcode); - if (!op) { - return_ACPI_STATUS(AE_NO_MEMORY); - } - - /* Initialize the new op */ - - if (node) { - op->named.name = node->name.integer; - } - *out_op = op; - } - - /* - * Put the Node in the "op" object that the parser uses, so we - * can get it again quickly when this scope is closed - */ - op->common.node = node; - return_ACPI_STATUS(status); -} - -/******************************************************************************* - * - * FUNCTION: acpi_ds_load2_end_op - * - * PARAMETERS: walk_state - Current state of the parse tree walk - * - * RETURN: Status - * - * DESCRIPTION: Ascending callback used during the loading of the namespace, - * both control methods and everything else. - * - ******************************************************************************/ - -acpi_status acpi_ds_load2_end_op(struct acpi_walk_state *walk_state) -{ - union acpi_parse_object *op; - acpi_status status = AE_OK; - acpi_object_type object_type; - struct acpi_namespace_node *node; - union acpi_parse_object *arg; - struct acpi_namespace_node *new_node; -#ifndef ACPI_NO_METHOD_EXECUTION - u32 i; - u8 region_space; -#endif - - ACPI_FUNCTION_TRACE(ds_load2_end_op); - - op = walk_state->op; - ACPI_DEBUG_PRINT((ACPI_DB_DISPATCH, "Opcode [%s] Op %p State %p\n", - walk_state->op_info->name, op, walk_state)); - - /* Check if opcode had an associated namespace object */ - - if (!(walk_state->op_info->flags & AML_NSOBJECT)) { - return_ACPI_STATUS(AE_OK); - } - - if (op->common.aml_opcode == AML_SCOPE_OP) { - ACPI_DEBUG_PRINT((ACPI_DB_DISPATCH, - "Ending scope Op=%p State=%p\n", op, - walk_state)); - } - - object_type = walk_state->op_info->object_type; - - /* - * Get the Node/name from the earlier lookup - * (It was saved in the *op structure) - */ - node = op->common.node; - - /* - * Put the Node on the object stack (Contains the ACPI Name of - * this object) - */ - walk_state->operands[0] = (void *)node; - walk_state->num_operands = 1; - - /* Pop the scope stack */ - - if (acpi_ns_opens_scope(object_type) && - (op->common.aml_opcode != AML_INT_METHODCALL_OP)) { - ACPI_DEBUG_PRINT((ACPI_DB_DISPATCH, - "(%s) Popping scope for Op %p\n", - acpi_ut_get_type_name(object_type), op)); - - status = acpi_ds_scope_stack_pop(walk_state); - if (ACPI_FAILURE(status)) { - goto cleanup; - } - } - - /* - * Named operations are as follows: - * - * AML_ALIAS - * AML_BANKFIELD - * AML_CREATEBITFIELD - * AML_CREATEBYTEFIELD - * AML_CREATEDWORDFIELD - * AML_CREATEFIELD - * AML_CREATEQWORDFIELD - * AML_CREATEWORDFIELD - * AML_DATA_REGION - * AML_DEVICE - * AML_EVENT - * AML_FIELD - * AML_INDEXFIELD - * AML_METHOD - * AML_METHODCALL - * AML_MUTEX - * AML_NAME - * AML_NAMEDFIELD - * AML_OPREGION - * AML_POWERRES - * AML_PROCESSOR - * AML_SCOPE - * AML_THERMALZONE - */ - - ACPI_DEBUG_PRINT((ACPI_DB_DISPATCH, - "Create-Load [%s] State=%p Op=%p NamedObj=%p\n", - acpi_ps_get_opcode_name(op->common.aml_opcode), - walk_state, op, node)); - - /* Decode the opcode */ - - arg = op->common.value.arg; - - switch (walk_state->op_info->type) { -#ifndef ACPI_NO_METHOD_EXECUTION - - case AML_TYPE_CREATE_FIELD: - /* - * Create the field object, but the field buffer and index must - * be evaluated later during the execution phase - */ - status = acpi_ds_create_buffer_field(op, walk_state); - break; - - case AML_TYPE_NAMED_FIELD: - /* - * If we are executing a method, initialize the field - */ - if (walk_state->method_node) { - status = acpi_ds_init_field_objects(op, walk_state); - } - - switch (op->common.aml_opcode) { - case AML_INDEX_FIELD_OP: - - status = - acpi_ds_create_index_field(op, - (acpi_handle) arg-> - common.node, walk_state); - break; - - case AML_BANK_FIELD_OP: - - status = - acpi_ds_create_bank_field(op, arg->common.node, - walk_state); - break; - - case AML_FIELD_OP: - - status = - acpi_ds_create_field(op, arg->common.node, - walk_state); - break; - - default: - /* All NAMED_FIELD opcodes must be handled above */ - break; - } - break; - - case AML_TYPE_NAMED_SIMPLE: - - status = acpi_ds_create_operands(walk_state, arg); - if (ACPI_FAILURE(status)) { - goto cleanup; - } - - switch (op->common.aml_opcode) { - case AML_PROCESSOR_OP: - - status = acpi_ex_create_processor(walk_state); - break; - - case AML_POWER_RES_OP: - - status = acpi_ex_create_power_resource(walk_state); - break; - - case AML_MUTEX_OP: - - status = acpi_ex_create_mutex(walk_state); - break; - - case AML_EVENT_OP: - - status = acpi_ex_create_event(walk_state); - break; - - case AML_ALIAS_OP: - - status = acpi_ex_create_alias(walk_state); - break; - - default: - /* Unknown opcode */ - - status = AE_OK; - goto cleanup; - } - - /* Delete operands */ - - for (i = 1; i < walk_state->num_operands; i++) { - acpi_ut_remove_reference(walk_state->operands[i]); - walk_state->operands[i] = NULL; - } - - break; -#endif /* ACPI_NO_METHOD_EXECUTION */ - - case AML_TYPE_NAMED_COMPLEX: - - switch (op->common.aml_opcode) { -#ifndef ACPI_NO_METHOD_EXECUTION - case AML_REGION_OP: - case AML_DATA_REGION_OP: - - if (op->common.aml_opcode == AML_REGION_OP) { - region_space = (acpi_adr_space_type) - ((op->common.value.arg)->common.value. - integer); - } else { - region_space = REGION_DATA_TABLE; - } - - /* - * The op_region is not fully parsed at this time. The only valid - * argument is the space_id. (We must save the address of the - * AML of the address and length operands) - * - * If we have a valid region, initialize it. The namespace is - * unlocked at this point. - * - * Need to unlock interpreter if it is locked (if we are running - * a control method), in order to allow _REG methods to be run - * during acpi_ev_initialize_region. - */ - if (walk_state->method_node) { - /* - * Executing a method: initialize the region and unlock - * the interpreter - */ - status = - acpi_ex_create_region(op->named.data, - op->named.length, - region_space, - walk_state); - if (ACPI_FAILURE(status)) { - return (status); - } - - acpi_ex_exit_interpreter(); - } - - status = - acpi_ev_initialize_region - (acpi_ns_get_attached_object(node), FALSE); - if (walk_state->method_node) { - acpi_ex_enter_interpreter(); - } - - if (ACPI_FAILURE(status)) { - /* - * If AE_NOT_EXIST is returned, it is not fatal - * because many regions get created before a handler - * is installed for said region. - */ - if (AE_NOT_EXIST == status) { - status = AE_OK; - } - } - break; - - case AML_NAME_OP: - - status = acpi_ds_create_node(walk_state, node, op); - break; - - case AML_METHOD_OP: - /* - * method_op pkg_length name_string method_flags term_list - * - * Note: We must create the method node/object pair as soon as we - * see the method declaration. This allows later pass1 parsing - * of invocations of the method (need to know the number of - * arguments.) - */ - ACPI_DEBUG_PRINT((ACPI_DB_DISPATCH, - "LOADING-Method: State=%p Op=%p NamedObj=%p\n", - walk_state, op, op->named.node)); - - if (!acpi_ns_get_attached_object(op->named.node)) { - walk_state->operands[0] = - ACPI_CAST_PTR(void, op->named.node); - walk_state->num_operands = 1; - - status = - acpi_ds_create_operands(walk_state, - op->common.value. - arg); - if (ACPI_SUCCESS(status)) { - status = - acpi_ex_create_method(op->named. - data, - op->named. - length, - walk_state); - } - walk_state->operands[0] = NULL; - walk_state->num_operands = 0; - - if (ACPI_FAILURE(status)) { - return_ACPI_STATUS(status); - } - } - break; - -#endif /* ACPI_NO_METHOD_EXECUTION */ - - default: - /* All NAMED_COMPLEX opcodes must be handled above */ - break; - } - break; - - case AML_CLASS_INTERNAL: - - /* case AML_INT_NAMEPATH_OP: */ - break; - - case AML_CLASS_METHOD_CALL: - - ACPI_DEBUG_PRINT((ACPI_DB_DISPATCH, - "RESOLVING-MethodCall: State=%p Op=%p NamedObj=%p\n", - walk_state, op, node)); - - /* - * Lookup the method name and save the Node - */ - status = - acpi_ns_lookup(walk_state->scope_info, - arg->common.value.string, ACPI_TYPE_ANY, - ACPI_IMODE_LOAD_PASS2, - ACPI_NS_SEARCH_PARENT | - ACPI_NS_DONT_OPEN_SCOPE, walk_state, - &(new_node)); - if (ACPI_SUCCESS(status)) { - /* - * Make sure that what we found is indeed a method - * We didn't search for a method on purpose, to see if the name - * would resolve - */ - if (new_node->type != ACPI_TYPE_METHOD) { - status = AE_AML_OPERAND_TYPE; - } - - /* We could put the returned object (Node) on the object stack for - * later, but for now, we will put it in the "op" object that the - * parser uses, so we can get it again at the end of this scope - */ - op->common.node = new_node; - } else { - ACPI_ERROR_NAMESPACE(arg->common.value.string, status); - } - break; - - default: - break; - } - - cleanup: - - /* Remove the Node pushed at the very beginning */ - - walk_state->operands[0] = NULL; - walk_state->num_operands = 0; - return_ACPI_STATUS(status); -} diff --git a/drivers/acpi/acpica/dswload2.c b/drivers/acpi/acpica/dswload2.c new file mode 100644 index 0000000..9763181 --- /dev/null +++ b/drivers/acpi/acpica/dswload2.c @@ -0,0 +1,720 @@ +/****************************************************************************** + * + * Module Name: dswload2 - Dispatcher second pass namespace load callbacks + * + *****************************************************************************/ + +/* + * 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 "acparser.h" +#include "amlcode.h" +#include "acdispat.h" +#include "acinterp.h" +#include "acnamesp.h" +#include "acevents.h" + +#define _COMPONENT ACPI_DISPATCHER +ACPI_MODULE_NAME("dswload2") + +/******************************************************************************* + * + * FUNCTION: acpi_ds_load2_begin_op + * + * PARAMETERS: walk_state - Current state of the parse tree walk + * out_op - Wher to return op if a new one is created + * + * RETURN: Status + * + * DESCRIPTION: Descending callback used during the loading of ACPI tables. + * + ******************************************************************************/ +acpi_status +acpi_ds_load2_begin_op(struct acpi_walk_state *walk_state, + union acpi_parse_object **out_op) +{ + union acpi_parse_object *op; + struct acpi_namespace_node *node; + acpi_status status; + acpi_object_type object_type; + char *buffer_ptr; + u32 flags; + + ACPI_FUNCTION_TRACE(ds_load2_begin_op); + + op = walk_state->op; + ACPI_DEBUG_PRINT((ACPI_DB_DISPATCH, "Op=%p State=%p\n", op, + walk_state)); + + if (op) { + if ((walk_state->control_state) && + (walk_state->control_state->common.state == + ACPI_CONTROL_CONDITIONAL_EXECUTING)) { + + /* We are executing a while loop outside of a method */ + + status = acpi_ds_exec_begin_op(walk_state, out_op); + return_ACPI_STATUS(status); + } + + /* We only care about Namespace opcodes here */ + + if ((!(walk_state->op_info->flags & AML_NSOPCODE) && + (walk_state->opcode != AML_INT_NAMEPATH_OP)) || + (!(walk_state->op_info->flags & AML_NAMED))) { + return_ACPI_STATUS(AE_OK); + } + + /* Get the name we are going to enter or lookup in the namespace */ + + if (walk_state->opcode == AML_INT_NAMEPATH_OP) { + + /* For Namepath op, get the path string */ + + buffer_ptr = op->common.value.string; + if (!buffer_ptr) { + + /* No name, just exit */ + + return_ACPI_STATUS(AE_OK); + } + } else { + /* Get name from the op */ + + buffer_ptr = ACPI_CAST_PTR(char, &op->named.name); + } + } else { + /* Get the namestring from the raw AML */ + + buffer_ptr = + acpi_ps_get_next_namestring(&walk_state->parser_state); + } + + /* Map the opcode into an internal object type */ + + object_type = walk_state->op_info->object_type; + + ACPI_DEBUG_PRINT((ACPI_DB_DISPATCH, + "State=%p Op=%p Type=%X\n", walk_state, op, + object_type)); + + switch (walk_state->opcode) { + case AML_FIELD_OP: + case AML_BANK_FIELD_OP: + case AML_INDEX_FIELD_OP: + + node = NULL; + status = AE_OK; + break; + + case AML_INT_NAMEPATH_OP: + /* + * The name_path is an object reference to an existing object. + * Don't enter the name into the namespace, but look it up + * for use later. + */ + status = + acpi_ns_lookup(walk_state->scope_info, buffer_ptr, + object_type, ACPI_IMODE_EXECUTE, + ACPI_NS_SEARCH_PARENT, walk_state, &(node)); + break; + + case AML_SCOPE_OP: + + /* Special case for Scope(\) -> refers to the Root node */ + + if (op && (op->named.node == acpi_gbl_root_node)) { + node = op->named.node; + + status = + acpi_ds_scope_stack_push(node, object_type, + walk_state); + if (ACPI_FAILURE(status)) { + return_ACPI_STATUS(status); + } + } else { + /* + * The Path is an object reference to an existing object. + * Don't enter the name into the namespace, but look it up + * for use later. + */ + status = + acpi_ns_lookup(walk_state->scope_info, buffer_ptr, + object_type, ACPI_IMODE_EXECUTE, + ACPI_NS_SEARCH_PARENT, walk_state, + &(node)); + if (ACPI_FAILURE(status)) { +#ifdef ACPI_ASL_COMPILER + if (status == AE_NOT_FOUND) { + status = AE_OK; + } else { + ACPI_ERROR_NAMESPACE(buffer_ptr, + status); + } +#else + ACPI_ERROR_NAMESPACE(buffer_ptr, status); +#endif + return_ACPI_STATUS(status); + } + } + + /* + * We must check to make sure that the target is + * one of the opcodes that actually opens a scope + */ + switch (node->type) { + case ACPI_TYPE_ANY: + case ACPI_TYPE_LOCAL_SCOPE: /* Scope */ + case ACPI_TYPE_DEVICE: + case ACPI_TYPE_POWER: + case ACPI_TYPE_PROCESSOR: + case ACPI_TYPE_THERMAL: + + /* These are acceptable types */ + break; + + case ACPI_TYPE_INTEGER: + case ACPI_TYPE_STRING: + case ACPI_TYPE_BUFFER: + + /* + * These types we will allow, but we will change the type. + * This enables some existing code of the form: + * + * Name (DEB, 0) + * Scope (DEB) { ... } + */ + ACPI_WARNING((AE_INFO, + "Type override - [%4.4s] had invalid type (%s) " + "for Scope operator, changed to type ANY\n", + acpi_ut_get_node_name(node), + acpi_ut_get_type_name(node->type))); + + node->type = ACPI_TYPE_ANY; + walk_state->scope_info->common.value = ACPI_TYPE_ANY; + break; + + default: + + /* All other types are an error */ + + ACPI_ERROR((AE_INFO, + "Invalid type (%s) for target of " + "Scope operator [%4.4s] (Cannot override)", + acpi_ut_get_type_name(node->type), + acpi_ut_get_node_name(node))); + + return (AE_AML_OPERAND_TYPE); + } + break; + + default: + + /* All other opcodes */ + + if (op && op->common.node) { + + /* This op/node was previously entered into the namespace */ + + node = op->common.node; + + if (acpi_ns_opens_scope(object_type)) { + status = + acpi_ds_scope_stack_push(node, object_type, + walk_state); + if (ACPI_FAILURE(status)) { + return_ACPI_STATUS(status); + } + } + + return_ACPI_STATUS(AE_OK); + } + + /* + * Enter the named type into the internal namespace. We enter the name + * as we go downward in the parse tree. Any necessary subobjects that + * involve arguments to the opcode must be created as we go back up the + * parse tree later. + * + * Note: Name may already exist if we are executing a deferred opcode. + */ + if (walk_state->deferred_node) { + + /* This name is already in the namespace, get the node */ + + node = walk_state->deferred_node; + status = AE_OK; + break; + } + + flags = ACPI_NS_NO_UPSEARCH; + if (walk_state->pass_number == ACPI_IMODE_EXECUTE) { + + /* Execution mode, node cannot already exist, node is temporary */ + + flags |= ACPI_NS_ERROR_IF_FOUND; + + if (! + (walk_state-> + parse_flags & ACPI_PARSE_MODULE_LEVEL)) { + flags |= ACPI_NS_TEMPORARY; + } + } + + /* Add new entry or lookup existing entry */ + + status = + acpi_ns_lookup(walk_state->scope_info, buffer_ptr, + object_type, ACPI_IMODE_LOAD_PASS2, flags, + walk_state, &node); + + if (ACPI_SUCCESS(status) && (flags & ACPI_NS_TEMPORARY)) { + ACPI_DEBUG_PRINT((ACPI_DB_DISPATCH, + "***New Node [%4.4s] %p is temporary\n", + acpi_ut_get_node_name(node), node)); + } + break; + } + + if (ACPI_FAILURE(status)) { + ACPI_ERROR_NAMESPACE(buffer_ptr, status); + return_ACPI_STATUS(status); + } + + if (!op) { + + /* Create a new op */ + + op = acpi_ps_alloc_op(walk_state->opcode); + if (!op) { + return_ACPI_STATUS(AE_NO_MEMORY); + } + + /* Initialize the new op */ + + if (node) { + op->named.name = node->name.integer; + } + *out_op = op; + } + + /* + * Put the Node in the "op" object that the parser uses, so we + * can get it again quickly when this scope is closed + */ + op->common.node = node; + return_ACPI_STATUS(status); +} + +/******************************************************************************* + * + * FUNCTION: acpi_ds_load2_end_op + * + * PARAMETERS: walk_state - Current state of the parse tree walk + * + * RETURN: Status + * + * DESCRIPTION: Ascending callback used during the loading of the namespace, + * both control methods and everything else. + * + ******************************************************************************/ + +acpi_status acpi_ds_load2_end_op(struct acpi_walk_state *walk_state) +{ + union acpi_parse_object *op; + acpi_status status = AE_OK; + acpi_object_type object_type; + struct acpi_namespace_node *node; + union acpi_parse_object *arg; + struct acpi_namespace_node *new_node; +#ifndef ACPI_NO_METHOD_EXECUTION + u32 i; + u8 region_space; +#endif + + ACPI_FUNCTION_TRACE(ds_load2_end_op); + + op = walk_state->op; + ACPI_DEBUG_PRINT((ACPI_DB_DISPATCH, "Opcode [%s] Op %p State %p\n", + walk_state->op_info->name, op, walk_state)); + + /* Check if opcode had an associated namespace object */ + + if (!(walk_state->op_info->flags & AML_NSOBJECT)) { + return_ACPI_STATUS(AE_OK); + } + + if (op->common.aml_opcode == AML_SCOPE_OP) { + ACPI_DEBUG_PRINT((ACPI_DB_DISPATCH, + "Ending scope Op=%p State=%p\n", op, + walk_state)); + } + + object_type = walk_state->op_info->object_type; + + /* + * Get the Node/name from the earlier lookup + * (It was saved in the *op structure) + */ + node = op->common.node; + + /* + * Put the Node on the object stack (Contains the ACPI Name of + * this object) + */ + walk_state->operands[0] = (void *)node; + walk_state->num_operands = 1; + + /* Pop the scope stack */ + + if (acpi_ns_opens_scope(object_type) && + (op->common.aml_opcode != AML_INT_METHODCALL_OP)) { + ACPI_DEBUG_PRINT((ACPI_DB_DISPATCH, + "(%s) Popping scope for Op %p\n", + acpi_ut_get_type_name(object_type), op)); + + status = acpi_ds_scope_stack_pop(walk_state); + if (ACPI_FAILURE(status)) { + goto cleanup; + } + } + + /* + * Named operations are as follows: + * + * AML_ALIAS + * AML_BANKFIELD + * AML_CREATEBITFIELD + * AML_CREATEBYTEFIELD + * AML_CREATEDWORDFIELD + * AML_CREATEFIELD + * AML_CREATEQWORDFIELD + * AML_CREATEWORDFIELD + * AML_DATA_REGION + * AML_DEVICE + * AML_EVENT + * AML_FIELD + * AML_INDEXFIELD + * AML_METHOD + * AML_METHODCALL + * AML_MUTEX + * AML_NAME + * AML_NAMEDFIELD + * AML_OPREGION + * AML_POWERRES + * AML_PROCESSOR + * AML_SCOPE + * AML_THERMALZONE + */ + + ACPI_DEBUG_PRINT((ACPI_DB_DISPATCH, + "Create-Load [%s] State=%p Op=%p NamedObj=%p\n", + acpi_ps_get_opcode_name(op->common.aml_opcode), + walk_state, op, node)); + + /* Decode the opcode */ + + arg = op->common.value.arg; + + switch (walk_state->op_info->type) { +#ifndef ACPI_NO_METHOD_EXECUTION + + case AML_TYPE_CREATE_FIELD: + /* + * Create the field object, but the field buffer and index must + * be evaluated later during the execution phase + */ + status = acpi_ds_create_buffer_field(op, walk_state); + break; + + case AML_TYPE_NAMED_FIELD: + /* + * If we are executing a method, initialize the field + */ + if (walk_state->method_node) { + status = acpi_ds_init_field_objects(op, walk_state); + } + + switch (op->common.aml_opcode) { + case AML_INDEX_FIELD_OP: + + status = + acpi_ds_create_index_field(op, + (acpi_handle) arg-> + common.node, walk_state); + break; + + case AML_BANK_FIELD_OP: + + status = + acpi_ds_create_bank_field(op, arg->common.node, + walk_state); + break; + + case AML_FIELD_OP: + + status = + acpi_ds_create_field(op, arg->common.node, + walk_state); + break; + + default: + /* All NAMED_FIELD opcodes must be handled above */ + break; + } + break; + + case AML_TYPE_NAMED_SIMPLE: + + status = acpi_ds_create_operands(walk_state, arg); + if (ACPI_FAILURE(status)) { + goto cleanup; + } + + switch (op->common.aml_opcode) { + case AML_PROCESSOR_OP: + + status = acpi_ex_create_processor(walk_state); + break; + + case AML_POWER_RES_OP: + + status = acpi_ex_create_power_resource(walk_state); + break; + + case AML_MUTEX_OP: + + status = acpi_ex_create_mutex(walk_state); + break; + + case AML_EVENT_OP: + + status = acpi_ex_create_event(walk_state); + break; + + case AML_ALIAS_OP: + + status = acpi_ex_create_alias(walk_state); + break; + + default: + /* Unknown opcode */ + + status = AE_OK; + goto cleanup; + } + + /* Delete operands */ + + for (i = 1; i < walk_state->num_operands; i++) { + acpi_ut_remove_reference(walk_state->operands[i]); + walk_state->operands[i] = NULL; + } + + break; +#endif /* ACPI_NO_METHOD_EXECUTION */ + + case AML_TYPE_NAMED_COMPLEX: + + switch (op->common.aml_opcode) { +#ifndef ACPI_NO_METHOD_EXECUTION + case AML_REGION_OP: + case AML_DATA_REGION_OP: + + if (op->common.aml_opcode == AML_REGION_OP) { + region_space = (acpi_adr_space_type) + ((op->common.value.arg)->common.value. + integer); + } else { + region_space = ACPI_ADR_SPACE_DATA_TABLE; + } + + /* + * The op_region is not fully parsed at this time. The only valid + * argument is the space_id. (We must save the address of the + * AML of the address and length operands) + * + * If we have a valid region, initialize it. The namespace is + * unlocked at this point. + * + * Need to unlock interpreter if it is locked (if we are running + * a control method), in order to allow _REG methods to be run + * during acpi_ev_initialize_region. + */ + if (walk_state->method_node) { + /* + * Executing a method: initialize the region and unlock + * the interpreter + */ + status = + acpi_ex_create_region(op->named.data, + op->named.length, + region_space, + walk_state); + if (ACPI_FAILURE(status)) { + return (status); + } + + acpi_ex_exit_interpreter(); + } + + status = + acpi_ev_initialize_region + (acpi_ns_get_attached_object(node), FALSE); + if (walk_state->method_node) { + acpi_ex_enter_interpreter(); + } + + if (ACPI_FAILURE(status)) { + /* + * If AE_NOT_EXIST is returned, it is not fatal + * because many regions get created before a handler + * is installed for said region. + */ + if (AE_NOT_EXIST == status) { + status = AE_OK; + } + } + break; + + case AML_NAME_OP: + + status = acpi_ds_create_node(walk_state, node, op); + break; + + case AML_METHOD_OP: + /* + * method_op pkg_length name_string method_flags term_list + * + * Note: We must create the method node/object pair as soon as we + * see the method declaration. This allows later pass1 parsing + * of invocations of the method (need to know the number of + * arguments.) + */ + ACPI_DEBUG_PRINT((ACPI_DB_DISPATCH, + "LOADING-Method: State=%p Op=%p NamedObj=%p\n", + walk_state, op, op->named.node)); + + if (!acpi_ns_get_attached_object(op->named.node)) { + walk_state->operands[0] = + ACPI_CAST_PTR(void, op->named.node); + walk_state->num_operands = 1; + + status = + acpi_ds_create_operands(walk_state, + op->common.value. + arg); + if (ACPI_SUCCESS(status)) { + status = + acpi_ex_create_method(op->named. + data, + op->named. + length, + walk_state); + } + walk_state->operands[0] = NULL; + walk_state->num_operands = 0; + + if (ACPI_FAILURE(status)) { + return_ACPI_STATUS(status); + } + } + break; + +#endif /* ACPI_NO_METHOD_EXECUTION */ + + default: + /* All NAMED_COMPLEX opcodes must be handled above */ + break; + } + break; + + case AML_CLASS_INTERNAL: + + /* case AML_INT_NAMEPATH_OP: */ + break; + + case AML_CLASS_METHOD_CALL: + + ACPI_DEBUG_PRINT((ACPI_DB_DISPATCH, + "RESOLVING-MethodCall: State=%p Op=%p NamedObj=%p\n", + walk_state, op, node)); + + /* + * Lookup the method name and save the Node + */ + status = + acpi_ns_lookup(walk_state->scope_info, + arg->common.value.string, ACPI_TYPE_ANY, + ACPI_IMODE_LOAD_PASS2, + ACPI_NS_SEARCH_PARENT | + ACPI_NS_DONT_OPEN_SCOPE, walk_state, + &(new_node)); + if (ACPI_SUCCESS(status)) { + /* + * Make sure that what we found is indeed a method + * We didn't search for a method on purpose, to see if the name + * would resolve + */ + if (new_node->type != ACPI_TYPE_METHOD) { + status = AE_AML_OPERAND_TYPE; + } + + /* We could put the returned object (Node) on the object stack for + * later, but for now, we will put it in the "op" object that the + * parser uses, so we can get it again at the end of this scope + */ + op->common.node = new_node; + } else { + ACPI_ERROR_NAMESPACE(arg->common.value.string, status); + } + break; + + default: + break; + } + + cleanup: + + /* Remove the Node pushed at the very beginning */ + + walk_state->operands[0] = NULL; + walk_state->num_operands = 0; + return_ACPI_STATUS(status); +} diff --git a/drivers/acpi/acpica/evglock.c b/drivers/acpi/acpica/evglock.c new file mode 100644 index 0000000..56a562a --- /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/evgpe.c b/drivers/acpi/acpica/evgpe.c index f472521..65c79ad 100644 --- a/drivers/acpi/acpica/evgpe.c +++ b/drivers/acpi/acpica/evgpe.c @@ -373,6 +373,15 @@ u32 acpi_ev_gpe_detect(struct acpi_gpe_xrupt_info * gpe_xrupt_list) gpe_register_info = &gpe_block->register_info[i]; + /* + * Optimization: If there are no GPEs enabled within this + * register, we can safely ignore the entire register. + */ + if (!(gpe_register_info->enable_for_run | + gpe_register_info->enable_for_wake)) { + continue; + } + /* Read the Status Register */ status = diff --git a/drivers/acpi/acpica/evmisc.c b/drivers/acpi/acpica/evmisc.c index 7dc8094..d0b3318 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 785a5ee..f0edf5c 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); @@ -231,6 +233,8 @@ acpi_status acpi_ev_initialize_op_regions(void) } } + acpi_gbl_reg_methods_executed = TRUE; + (void)acpi_ut_release_mutex(ACPI_MTX_NAMESPACE); return_ACPI_STATUS(status); } @@ -559,7 +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]", @@ -1060,6 +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); } @@ -1118,6 +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 9659cee..55a5d35 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 eb73867..00cd956 100644 --- a/drivers/acpi/acpica/evxfregn.c +++ b/drivers/acpi/acpica/evxfregn.c @@ -110,6 +110,37 @@ acpi_install_address_space_handler(acpi_handle device, goto unlock_and_exit; } + /* + * For the default space_iDs, (the IDs for which there are default region handlers + * installed) Only execute the _REG methods if the global initialization _REG + * methods have already been run (via acpi_initialize_objects). In other words, + * we will defer the execution of the _REG methods for these space_iDs until + * execution of acpi_initialize_objects. This is done because we need the handlers + * for the default spaces (mem/io/pci/table) to be installed before we can run + * any control methods (or _REG methods). There is known BIOS code that depends + * on this. + * + * For all other space_iDs, we can safely execute the _REG methods immediately. + * This means that for IDs like embedded_controller, this function should be called + * only after acpi_enable_subsystem has been called. + */ + switch (space_id) { + case ACPI_ADR_SPACE_SYSTEM_MEMORY: + case ACPI_ADR_SPACE_SYSTEM_IO: + case ACPI_ADR_SPACE_PCI_CONFIG: + case ACPI_ADR_SPACE_DATA_TABLE: + + if (!acpi_gbl_reg_methods_executed) { + + /* We will defer execution of the _REG methods for this space */ + goto unlock_and_exit; + } + break; + + default: + break; + } + /* Run all _REG methods for this address space */ status = acpi_ev_execute_reg_methods(node, space_id); diff --git a/drivers/acpi/acpica/excreate.c b/drivers/acpi/acpica/excreate.c index e7b372d..110711a 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/exfldio.c b/drivers/acpi/acpica/exfldio.c index 6c79c29..f915a7f 100644 --- a/drivers/acpi/acpica/exfldio.c +++ b/drivers/acpi/acpica/exfldio.c @@ -280,13 +280,13 @@ acpi_ex_access_region(union acpi_operand_object *obj_desc, if (ACPI_FAILURE(status)) { if (status == AE_NOT_IMPLEMENTED) { ACPI_ERROR((AE_INFO, - "Region %s(0x%X) not implemented", + "Region %s (ID=%u) not implemented", acpi_ut_get_region_name(rgn_desc->region. space_id), rgn_desc->region.space_id)); } else if (status == AE_NOT_EXIST) { ACPI_ERROR((AE_INFO, - "Region %s(0x%X) has no handler", + "Region %s (ID=%u) has no handler", acpi_ut_get_region_name(rgn_desc->region. space_id), rgn_desc->region.space_id)); diff --git a/drivers/acpi/acpica/hwxface.c b/drivers/acpi/acpica/hwxface.c index 6f98d21..f75f81a 100644 --- a/drivers/acpi/acpica/hwxface.c +++ b/drivers/acpi/acpica/hwxface.c @@ -80,14 +80,14 @@ acpi_status acpi_reset(void) if (reset_reg->space_id == ACPI_ADR_SPACE_SYSTEM_IO) { /* - * For I/O space, write directly to the OSL. This bypasses the port - * validation mechanism, which may block a valid write to the reset - * register. + * For I/O space, write directly to the OSL. This + * bypasses the port validation mechanism, which may + * block a valid write to the reset register. Spec + * section 4.7.3.6 requires register width to be 8. */ status = acpi_os_write_port((acpi_io_address) reset_reg->address, - acpi_gbl_FADT.reset_value, - reset_reg->bit_width); + acpi_gbl_FADT.reset_value, 8); } else { /* Write the reset value to the reset register */ diff --git a/drivers/acpi/acpica/nsrepair.c b/drivers/acpi/acpica/nsrepair.c index 1d76ac8..ac7b854 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/tbfadt.c b/drivers/acpi/acpica/tbfadt.c index 428d44e..6f5588e 100644 --- a/drivers/acpi/acpica/tbfadt.c +++ b/drivers/acpi/acpica/tbfadt.c @@ -384,8 +384,11 @@ static void acpi_tb_convert_fadt(void) * * The ACPI 1.0 reserved fields that will be zeroed are the bytes located at * offset 45, 55, 95, and the word located at offset 109, 110. + * + * Note: The FADT revision value is unreliable. Only the length can be + * trusted. */ - if (acpi_gbl_FADT.header.revision < FADT2_REVISION_ID) { + if (acpi_gbl_FADT.header.length <= ACPI_FADT_V2_SIZE) { acpi_gbl_FADT.preferred_profile = 0; acpi_gbl_FADT.pstate_control = 0; acpi_gbl_FADT.cst_control = 0; diff --git a/drivers/acpi/acpica/utdecode.c b/drivers/acpi/acpica/utdecode.c new file mode 100644 index 0000000..97cb36f --- /dev/null +++ b/drivers/acpi/acpica/utdecode.c @@ -0,0 +1,549 @@ +/****************************************************************************** + * + * Module Name: utdecode - Utility decoding routines (value-to-string) + * + *****************************************************************************/ + +/* + * 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 "acnamesp.h" + +#define _COMPONENT ACPI_UTILITIES +ACPI_MODULE_NAME("utdecode") + +/******************************************************************************* + * + * FUNCTION: acpi_format_exception + * + * PARAMETERS: Status - The acpi_status code to be formatted + * + * RETURN: A string containing the exception text. A valid pointer is + * always returned. + * + * DESCRIPTION: This function translates an ACPI exception into an ASCII string + * It is here instead of utxface.c so it is always present. + * + ******************************************************************************/ +const char *acpi_format_exception(acpi_status status) +{ + const char *exception = NULL; + + ACPI_FUNCTION_ENTRY(); + + exception = acpi_ut_validate_exception(status); + if (!exception) { + + /* Exception code was not recognized */ + + ACPI_ERROR((AE_INFO, + "Unknown exception code: 0x%8.8X", status)); + + exception = "UNKNOWN_STATUS_CODE"; + } + + return (ACPI_CAST_PTR(const char, exception)); +} + +ACPI_EXPORT_SYMBOL(acpi_format_exception) + +/* + * Properties of the ACPI Object Types, both internal and external. + * The table is indexed by values of acpi_object_type + */ +const u8 acpi_gbl_ns_properties[ACPI_NUM_NS_TYPES] = { + ACPI_NS_NORMAL, /* 00 Any */ + ACPI_NS_NORMAL, /* 01 Number */ + ACPI_NS_NORMAL, /* 02 String */ + ACPI_NS_NORMAL, /* 03 Buffer */ + ACPI_NS_NORMAL, /* 04 Package */ + ACPI_NS_NORMAL, /* 05 field_unit */ + ACPI_NS_NEWSCOPE, /* 06 Device */ + ACPI_NS_NORMAL, /* 07 Event */ + ACPI_NS_NEWSCOPE, /* 08 Method */ + ACPI_NS_NORMAL, /* 09 Mutex */ + ACPI_NS_NORMAL, /* 10 Region */ + ACPI_NS_NEWSCOPE, /* 11 Power */ + ACPI_NS_NEWSCOPE, /* 12 Processor */ + ACPI_NS_NEWSCOPE, /* 13 Thermal */ + ACPI_NS_NORMAL, /* 14 buffer_field */ + ACPI_NS_NORMAL, /* 15 ddb_handle */ + ACPI_NS_NORMAL, /* 16 Debug Object */ + ACPI_NS_NORMAL, /* 17 def_field */ + ACPI_NS_NORMAL, /* 18 bank_field */ + ACPI_NS_NORMAL, /* 19 index_field */ + ACPI_NS_NORMAL, /* 20 Reference */ + ACPI_NS_NORMAL, /* 21 Alias */ + ACPI_NS_NORMAL, /* 22 method_alias */ + ACPI_NS_NORMAL, /* 23 Notify */ + ACPI_NS_NORMAL, /* 24 Address Handler */ + ACPI_NS_NEWSCOPE | ACPI_NS_LOCAL, /* 25 Resource Desc */ + ACPI_NS_NEWSCOPE | ACPI_NS_LOCAL, /* 26 Resource Field */ + ACPI_NS_NEWSCOPE, /* 27 Scope */ + ACPI_NS_NORMAL, /* 28 Extra */ + ACPI_NS_NORMAL, /* 29 Data */ + ACPI_NS_NORMAL /* 30 Invalid */ +}; + +/******************************************************************************* + * + * FUNCTION: acpi_ut_hex_to_ascii_char + * + * PARAMETERS: Integer - Contains the hex digit + * Position - bit position of the digit within the + * integer (multiple of 4) + * + * RETURN: The converted Ascii character + * + * DESCRIPTION: Convert a hex digit to an Ascii character + * + ******************************************************************************/ + +/* Hex to ASCII conversion table */ + +static const char acpi_gbl_hex_to_ascii[] = { + '0', '1', '2', '3', '4', '5', '6', '7', + '8', '9', 'A', 'B', 'C', 'D', 'E', 'F' +}; + +char acpi_ut_hex_to_ascii_char(u64 integer, u32 position) +{ + + return (acpi_gbl_hex_to_ascii[(integer >> position) & 0xF]); +} + +/******************************************************************************* + * + * FUNCTION: acpi_ut_get_region_name + * + * PARAMETERS: Space ID - ID for the region + * + * RETURN: Decoded region space_id name + * + * DESCRIPTION: Translate a Space ID into a name string (Debug only) + * + ******************************************************************************/ + +/* Region type decoding */ + +const char *acpi_gbl_region_types[ACPI_NUM_PREDEFINED_REGIONS] = { + "SystemMemory", + "SystemIO", + "PCI_Config", + "EmbeddedControl", + "SMBus", + "SystemCMOS", + "PCIBARTarget", + "IPMI" +}; + +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) { + return ("InvalidSpaceId"); + } + + return (ACPI_CAST_PTR(char, acpi_gbl_region_types[space_id])); +} + +/******************************************************************************* + * + * FUNCTION: acpi_ut_get_event_name + * + * PARAMETERS: event_id - Fixed event ID + * + * RETURN: Decoded event ID name + * + * DESCRIPTION: Translate a Event ID into a name string (Debug only) + * + ******************************************************************************/ + +/* Event type decoding */ + +static const char *acpi_gbl_event_types[ACPI_NUM_FIXED_EVENTS] = { + "PM_Timer", + "GlobalLock", + "PowerButton", + "SleepButton", + "RealTimeClock", +}; + +char *acpi_ut_get_event_name(u32 event_id) +{ + + if (event_id > ACPI_EVENT_MAX) { + return ("InvalidEventID"); + } + + return (ACPI_CAST_PTR(char, acpi_gbl_event_types[event_id])); +} + +/******************************************************************************* + * + * FUNCTION: acpi_ut_get_type_name + * + * PARAMETERS: Type - An ACPI object type + * + * RETURN: Decoded ACPI object type name + * + * DESCRIPTION: Translate a Type ID into a name string (Debug only) + * + ******************************************************************************/ + +/* + * Elements of acpi_gbl_ns_type_names below must match + * one-to-one with values of acpi_object_type + * + * The type ACPI_TYPE_ANY (Untyped) is used as a "don't care" when searching; + * when stored in a table it really means that we have thus far seen no + * evidence to indicate what type is actually going to be stored for this entry. + */ +static const char acpi_gbl_bad_type[] = "UNDEFINED"; + +/* Printable names of the ACPI object types */ + +static const char *acpi_gbl_ns_type_names[] = { + /* 00 */ "Untyped", + /* 01 */ "Integer", + /* 02 */ "String", + /* 03 */ "Buffer", + /* 04 */ "Package", + /* 05 */ "FieldUnit", + /* 06 */ "Device", + /* 07 */ "Event", + /* 08 */ "Method", + /* 09 */ "Mutex", + /* 10 */ "Region", + /* 11 */ "Power", + /* 12 */ "Processor", + /* 13 */ "Thermal", + /* 14 */ "BufferField", + /* 15 */ "DdbHandle", + /* 16 */ "DebugObject", + /* 17 */ "RegionField", + /* 18 */ "BankField", + /* 19 */ "IndexField", + /* 20 */ "Reference", + /* 21 */ "Alias", + /* 22 */ "MethodAlias", + /* 23 */ "Notify", + /* 24 */ "AddrHandler", + /* 25 */ "ResourceDesc", + /* 26 */ "ResourceFld", + /* 27 */ "Scope", + /* 28 */ "Extra", + /* 29 */ "Data", + /* 30 */ "Invalid" +}; + +char *acpi_ut_get_type_name(acpi_object_type type) +{ + + if (type > ACPI_TYPE_INVALID) { + return (ACPI_CAST_PTR(char, acpi_gbl_bad_type)); + } + + return (ACPI_CAST_PTR(char, acpi_gbl_ns_type_names[type])); +} + +char *acpi_ut_get_object_type_name(union acpi_operand_object *obj_desc) +{ + + if (!obj_desc) { + return ("[NULL Object Descriptor]"); + } + + return (acpi_ut_get_type_name(obj_desc->common.type)); +} + +/******************************************************************************* + * + * FUNCTION: acpi_ut_get_node_name + * + * PARAMETERS: Object - A namespace node + * + * RETURN: ASCII name of the node + * + * DESCRIPTION: Validate the node and return the node's ACPI name. + * + ******************************************************************************/ + +char *acpi_ut_get_node_name(void *object) +{ + struct acpi_namespace_node *node = (struct acpi_namespace_node *)object; + + /* Must return a string of exactly 4 characters == ACPI_NAME_SIZE */ + + if (!object) { + return ("NULL"); + } + + /* Check for Root node */ + + if ((object == ACPI_ROOT_OBJECT) || (object == acpi_gbl_root_node)) { + return ("\"\\\" "); + } + + /* Descriptor must be a namespace node */ + + if (ACPI_GET_DESCRIPTOR_TYPE(node) != ACPI_DESC_TYPE_NAMED) { + return ("####"); + } + + /* + * Ensure name is valid. The name was validated/repaired when the node + * was created, but make sure it has not been corrupted. + */ + acpi_ut_repair_name(node->name.ascii); + + /* Return the name */ + + return (node->name.ascii); +} + +/******************************************************************************* + * + * FUNCTION: acpi_ut_get_descriptor_name + * + * PARAMETERS: Object - An ACPI object + * + * RETURN: Decoded name of the descriptor type + * + * DESCRIPTION: Validate object and return the descriptor type + * + ******************************************************************************/ + +/* Printable names of object descriptor types */ + +static const char *acpi_gbl_desc_type_names[] = { + /* 00 */ "Not a Descriptor", + /* 01 */ "Cached", + /* 02 */ "State-Generic", + /* 03 */ "State-Update", + /* 04 */ "State-Package", + /* 05 */ "State-Control", + /* 06 */ "State-RootParseScope", + /* 07 */ "State-ParseScope", + /* 08 */ "State-WalkScope", + /* 09 */ "State-Result", + /* 10 */ "State-Notify", + /* 11 */ "State-Thread", + /* 12 */ "Walk", + /* 13 */ "Parser", + /* 14 */ "Operand", + /* 15 */ "Node" +}; + +char *acpi_ut_get_descriptor_name(void *object) +{ + + if (!object) { + return ("NULL OBJECT"); + } + + if (ACPI_GET_DESCRIPTOR_TYPE(object) > ACPI_DESC_TYPE_MAX) { + return ("Not a Descriptor"); + } + + return (ACPI_CAST_PTR(char, + acpi_gbl_desc_type_names[ACPI_GET_DESCRIPTOR_TYPE + (object)])); + +} + +/******************************************************************************* + * + * FUNCTION: acpi_ut_get_reference_name + * + * PARAMETERS: Object - An ACPI reference object + * + * RETURN: Decoded name of the type of reference + * + * DESCRIPTION: Decode a reference object sub-type to a string. + * + ******************************************************************************/ + +/* Printable names of reference object sub-types */ + +static const char *acpi_gbl_ref_class_names[] = { + /* 00 */ "Local", + /* 01 */ "Argument", + /* 02 */ "RefOf", + /* 03 */ "Index", + /* 04 */ "DdbHandle", + /* 05 */ "Named Object", + /* 06 */ "Debug" +}; + +const char *acpi_ut_get_reference_name(union acpi_operand_object *object) +{ + + if (!object) { + return ("NULL Object"); + } + + if (ACPI_GET_DESCRIPTOR_TYPE(object) != ACPI_DESC_TYPE_OPERAND) { + return ("Not an Operand object"); + } + + if (object->common.type != ACPI_TYPE_LOCAL_REFERENCE) { + return ("Not a Reference object"); + } + + if (object->reference.class > ACPI_REFCLASS_MAX) { + return ("Unknown Reference class"); + } + + return (acpi_gbl_ref_class_names[object->reference.class]); +} + +#if defined(ACPI_DEBUG_OUTPUT) || defined(ACPI_DEBUGGER) +/* + * Strings and procedures used for debug only + */ + +/******************************************************************************* + * + * FUNCTION: acpi_ut_get_mutex_name + * + * PARAMETERS: mutex_id - The predefined ID for this mutex. + * + * RETURN: Decoded name of the internal mutex + * + * DESCRIPTION: Translate a mutex ID into a name string (Debug only) + * + ******************************************************************************/ + +/* Names for internal mutex objects, used for debug output */ + +static char *acpi_gbl_mutex_names[ACPI_NUM_MUTEX] = { + "ACPI_MTX_Interpreter", + "ACPI_MTX_Namespace", + "ACPI_MTX_Tables", + "ACPI_MTX_Events", + "ACPI_MTX_Caches", + "ACPI_MTX_Memory", + "ACPI_MTX_CommandComplete", + "ACPI_MTX_CommandReady" +}; + +char *acpi_ut_get_mutex_name(u32 mutex_id) +{ + + if (mutex_id > ACPI_MAX_MUTEX) { + return ("Invalid Mutex ID"); + } + + return (acpi_gbl_mutex_names[mutex_id]); +} + +/******************************************************************************* + * + * FUNCTION: acpi_ut_get_notify_name + * + * PARAMETERS: notify_value - Value from the Notify() request + * + * RETURN: Decoded name for the notify value + * + * DESCRIPTION: Translate a Notify Value to a notify namestring. + * + ******************************************************************************/ + +/* Names for Notify() values, used for debug output */ + +static const char *acpi_gbl_notify_value_names[] = { + "Bus Check", + "Device Check", + "Device Wake", + "Eject Request", + "Device Check Light", + "Frequency Mismatch", + "Bus Mode Mismatch", + "Power Fault", + "Capabilities Check", + "Device PLD Check", + "Reserved", + "System Locality Update" +}; + +const char *acpi_ut_get_notify_name(u32 notify_value) +{ + + if (notify_value <= ACPI_NOTIFY_MAX) { + return (acpi_gbl_notify_value_names[notify_value]); + } else if (notify_value <= ACPI_MAX_SYS_NOTIFY) { + return ("Reserved"); + } else { /* Greater or equal to 0x80 */ + + return ("**Device Specific**"); + } +} +#endif + +/******************************************************************************* + * + * FUNCTION: acpi_ut_valid_object_type + * + * PARAMETERS: Type - Object type to be validated + * + * RETURN: TRUE if valid object type, FALSE otherwise + * + * DESCRIPTION: Validate an object type + * + ******************************************************************************/ + +u8 acpi_ut_valid_object_type(acpi_object_type type) +{ + + if (type > ACPI_TYPE_LOCAL_MAX) { + + /* Note: Assumes all TYPEs are contiguous (external/local) */ + + return (FALSE); + } + + return (TRUE); +} diff --git a/drivers/acpi/acpica/utglobal.c b/drivers/acpi/acpica/utglobal.c index 97dd9bb..833a38a 100644 --- a/drivers/acpi/acpica/utglobal.c +++ b/drivers/acpi/acpica/utglobal.c @@ -45,7 +45,6 @@ #include <acpi/acpi.h> #include "accommon.h" -#include "acnamesp.h" #define _COMPONENT ACPI_UTILITIES ACPI_MODULE_NAME("utglobal") @@ -107,43 +106,6 @@ const char *acpi_gbl_highest_dstate_names[ACPI_NUM_sx_d_METHODS] = { /******************************************************************************* * - * FUNCTION: acpi_format_exception - * - * PARAMETERS: Status - The acpi_status code to be formatted - * - * RETURN: A string containing the exception text. A valid pointer is - * always returned. - * - * DESCRIPTION: This function translates an ACPI exception into an ASCII string - * It is here instead of utxface.c so it is always present. - * - ******************************************************************************/ - -const char *acpi_format_exception(acpi_status status) -{ - const char *exception = NULL; - - ACPI_FUNCTION_ENTRY(); - - exception = acpi_ut_validate_exception(status); - if (!exception) { - - /* Exception code was not recognized */ - - ACPI_ERROR((AE_INFO, - "Unknown exception code: 0x%8.8X", status)); - - exception = "UNKNOWN_STATUS_CODE"; - dump_stack(); - } - - return (ACPI_CAST_PTR(const char, exception)); -} - -ACPI_EXPORT_SYMBOL(acpi_format_exception) - -/******************************************************************************* - * * Namespace globals * ******************************************************************************/ @@ -177,71 +139,6 @@ const struct acpi_predefined_names acpi_gbl_pre_defined_names[] = { {NULL, ACPI_TYPE_ANY, NULL} }; -/* - * Properties of the ACPI Object Types, both internal and external. - * The table is indexed by values of acpi_object_type - */ -const u8 acpi_gbl_ns_properties[] = { - ACPI_NS_NORMAL, /* 00 Any */ - ACPI_NS_NORMAL, /* 01 Number */ - ACPI_NS_NORMAL, /* 02 String */ - ACPI_NS_NORMAL, /* 03 Buffer */ - ACPI_NS_NORMAL, /* 04 Package */ - ACPI_NS_NORMAL, /* 05 field_unit */ - ACPI_NS_NEWSCOPE, /* 06 Device */ - ACPI_NS_NORMAL, /* 07 Event */ - ACPI_NS_NEWSCOPE, /* 08 Method */ - ACPI_NS_NORMAL, /* 09 Mutex */ - ACPI_NS_NORMAL, /* 10 Region */ - ACPI_NS_NEWSCOPE, /* 11 Power */ - ACPI_NS_NEWSCOPE, /* 12 Processor */ - ACPI_NS_NEWSCOPE, /* 13 Thermal */ - ACPI_NS_NORMAL, /* 14 buffer_field */ - ACPI_NS_NORMAL, /* 15 ddb_handle */ - ACPI_NS_NORMAL, /* 16 Debug Object */ - ACPI_NS_NORMAL, /* 17 def_field */ - ACPI_NS_NORMAL, /* 18 bank_field */ - ACPI_NS_NORMAL, /* 19 index_field */ - ACPI_NS_NORMAL, /* 20 Reference */ - ACPI_NS_NORMAL, /* 21 Alias */ - ACPI_NS_NORMAL, /* 22 method_alias */ - ACPI_NS_NORMAL, /* 23 Notify */ - ACPI_NS_NORMAL, /* 24 Address Handler */ - ACPI_NS_NEWSCOPE | ACPI_NS_LOCAL, /* 25 Resource Desc */ - ACPI_NS_NEWSCOPE | ACPI_NS_LOCAL, /* 26 Resource Field */ - ACPI_NS_NEWSCOPE, /* 27 Scope */ - ACPI_NS_NORMAL, /* 28 Extra */ - ACPI_NS_NORMAL, /* 29 Data */ - ACPI_NS_NORMAL /* 30 Invalid */ -}; - -/* Hex to ASCII conversion table */ - -static const char acpi_gbl_hex_to_ascii[] = { - '0', '1', '2', '3', '4', '5', '6', '7', - '8', '9', 'A', 'B', 'C', 'D', 'E', 'F' -}; - -/******************************************************************************* - * - * FUNCTION: acpi_ut_hex_to_ascii_char - * - * PARAMETERS: Integer - Contains the hex digit - * Position - bit position of the digit within the - * integer (multiple of 4) - * - * RETURN: The converted Ascii character - * - * DESCRIPTION: Convert a hex digit to an Ascii character - * - ******************************************************************************/ - -char acpi_ut_hex_to_ascii_char(u64 integer, u32 position) -{ - - return (acpi_gbl_hex_to_ascii[(integer >> position) & 0xF]); -} - /****************************************************************************** * * Event and Hardware globals @@ -341,386 +238,6 @@ struct acpi_fixed_event_info acpi_gbl_fixed_event_info[ACPI_NUM_FIXED_EVENTS] = /******************************************************************************* * - * FUNCTION: acpi_ut_get_region_name - * - * PARAMETERS: None. - * - * RETURN: Status - * - * DESCRIPTION: Translate a Space ID into a name string (Debug only) - * - ******************************************************************************/ - -/* Region type decoding */ - -const char *acpi_gbl_region_types[ACPI_NUM_PREDEFINED_REGIONS] = { - "SystemMemory", - "SystemIO", - "PCI_Config", - "EmbeddedControl", - "SMBus", - "SystemCMOS", - "PCIBARTarget", - "IPMI", - "DataTable" -}; - -char *acpi_ut_get_region_name(u8 space_id) -{ - - if (space_id >= ACPI_USER_REGION_BEGIN) { - return ("UserDefinedRegion"); - } else if (space_id >= ACPI_NUM_PREDEFINED_REGIONS) { - return ("InvalidSpaceId"); - } - - return (ACPI_CAST_PTR(char, acpi_gbl_region_types[space_id])); -} - -/******************************************************************************* - * - * FUNCTION: acpi_ut_get_event_name - * - * PARAMETERS: None. - * - * RETURN: Status - * - * DESCRIPTION: Translate a Event ID into a name string (Debug only) - * - ******************************************************************************/ - -/* Event type decoding */ - -static const char *acpi_gbl_event_types[ACPI_NUM_FIXED_EVENTS] = { - "PM_Timer", - "GlobalLock", - "PowerButton", - "SleepButton", - "RealTimeClock", -}; - -char *acpi_ut_get_event_name(u32 event_id) -{ - - if (event_id > ACPI_EVENT_MAX) { - return ("InvalidEventID"); - } - - return (ACPI_CAST_PTR(char, acpi_gbl_event_types[event_id])); -} - -/******************************************************************************* - * - * FUNCTION: acpi_ut_get_type_name - * - * PARAMETERS: None. - * - * RETURN: Status - * - * DESCRIPTION: Translate a Type ID into a name string (Debug only) - * - ******************************************************************************/ - -/* - * Elements of acpi_gbl_ns_type_names below must match - * one-to-one with values of acpi_object_type - * - * The type ACPI_TYPE_ANY (Untyped) is used as a "don't care" when searching; - * when stored in a table it really means that we have thus far seen no - * evidence to indicate what type is actually going to be stored for this entry. - */ -static const char acpi_gbl_bad_type[] = "UNDEFINED"; - -/* Printable names of the ACPI object types */ - -static const char *acpi_gbl_ns_type_names[] = { - /* 00 */ "Untyped", - /* 01 */ "Integer", - /* 02 */ "String", - /* 03 */ "Buffer", - /* 04 */ "Package", - /* 05 */ "FieldUnit", - /* 06 */ "Device", - /* 07 */ "Event", - /* 08 */ "Method", - /* 09 */ "Mutex", - /* 10 */ "Region", - /* 11 */ "Power", - /* 12 */ "Processor", - /* 13 */ "Thermal", - /* 14 */ "BufferField", - /* 15 */ "DdbHandle", - /* 16 */ "DebugObject", - /* 17 */ "RegionField", - /* 18 */ "BankField", - /* 19 */ "IndexField", - /* 20 */ "Reference", - /* 21 */ "Alias", - /* 22 */ "MethodAlias", - /* 23 */ "Notify", - /* 24 */ "AddrHandler", - /* 25 */ "ResourceDesc", - /* 26 */ "ResourceFld", - /* 27 */ "Scope", - /* 28 */ "Extra", - /* 29 */ "Data", - /* 30 */ "Invalid" -}; - -char *acpi_ut_get_type_name(acpi_object_type type) -{ - - if (type > ACPI_TYPE_INVALID) { - return (ACPI_CAST_PTR(char, acpi_gbl_bad_type)); - } - - return (ACPI_CAST_PTR(char, acpi_gbl_ns_type_names[type])); -} - -char *acpi_ut_get_object_type_name(union acpi_operand_object *obj_desc) -{ - - if (!obj_desc) { - return ("[NULL Object Descriptor]"); - } - - return (acpi_ut_get_type_name(obj_desc->common.type)); -} - -/******************************************************************************* - * - * FUNCTION: acpi_ut_get_node_name - * - * PARAMETERS: Object - A namespace node - * - * RETURN: Pointer to a string - * - * DESCRIPTION: Validate the node and return the node's ACPI name. - * - ******************************************************************************/ - -char *acpi_ut_get_node_name(void *object) -{ - struct acpi_namespace_node *node = (struct acpi_namespace_node *)object; - - /* Must return a string of exactly 4 characters == ACPI_NAME_SIZE */ - - if (!object) { - return ("NULL"); - } - - /* Check for Root node */ - - if ((object == ACPI_ROOT_OBJECT) || (object == acpi_gbl_root_node)) { - return ("\"\\\" "); - } - - /* Descriptor must be a namespace node */ - - if (ACPI_GET_DESCRIPTOR_TYPE(node) != ACPI_DESC_TYPE_NAMED) { - return ("####"); - } - - /* Name must be a valid ACPI name */ - - if (!acpi_ut_valid_acpi_name(node->name.integer)) { - node->name.integer = acpi_ut_repair_name(node->name.ascii); - } - - /* Return the name */ - - return (node->name.ascii); -} - -/******************************************************************************* - * - * FUNCTION: acpi_ut_get_descriptor_name - * - * PARAMETERS: Object - An ACPI object - * - * RETURN: Pointer to a string - * - * DESCRIPTION: Validate object and return the descriptor type - * - ******************************************************************************/ - -/* Printable names of object descriptor types */ - -static const char *acpi_gbl_desc_type_names[] = { - /* 00 */ "Invalid", - /* 01 */ "Cached", - /* 02 */ "State-Generic", - /* 03 */ "State-Update", - /* 04 */ "State-Package", - /* 05 */ "State-Control", - /* 06 */ "State-RootParseScope", - /* 07 */ "State-ParseScope", - /* 08 */ "State-WalkScope", - /* 09 */ "State-Result", - /* 10 */ "State-Notify", - /* 11 */ "State-Thread", - /* 12 */ "Walk", - /* 13 */ "Parser", - /* 14 */ "Operand", - /* 15 */ "Node" -}; - -char *acpi_ut_get_descriptor_name(void *object) -{ - - if (!object) { - return ("NULL OBJECT"); - } - - if (ACPI_GET_DESCRIPTOR_TYPE(object) > ACPI_DESC_TYPE_MAX) { - return (ACPI_CAST_PTR(char, acpi_gbl_bad_type)); - } - - return (ACPI_CAST_PTR(char, - acpi_gbl_desc_type_names[ACPI_GET_DESCRIPTOR_TYPE - (object)])); - -} - -/******************************************************************************* - * - * FUNCTION: acpi_ut_get_reference_name - * - * PARAMETERS: Object - An ACPI reference object - * - * RETURN: Pointer to a string - * - * DESCRIPTION: Decode a reference object sub-type to a string. - * - ******************************************************************************/ - -/* Printable names of reference object sub-types */ - -static const char *acpi_gbl_ref_class_names[] = { - /* 00 */ "Local", - /* 01 */ "Argument", - /* 02 */ "RefOf", - /* 03 */ "Index", - /* 04 */ "DdbHandle", - /* 05 */ "Named Object", - /* 06 */ "Debug" -}; - -const char *acpi_ut_get_reference_name(union acpi_operand_object *object) -{ - if (!object) - return "NULL Object"; - - if (ACPI_GET_DESCRIPTOR_TYPE(object) != ACPI_DESC_TYPE_OPERAND) - return "Not an Operand object"; - - if (object->common.type != ACPI_TYPE_LOCAL_REFERENCE) - return "Not a Reference object"; - - if (object->reference.class > ACPI_REFCLASS_MAX) - return "Unknown Reference class"; - - return acpi_gbl_ref_class_names[object->reference.class]; -} - -#if defined(ACPI_DEBUG_OUTPUT) || defined(ACPI_DEBUGGER) -/* - * Strings and procedures used for debug only - */ - -/******************************************************************************* - * - * FUNCTION: acpi_ut_get_mutex_name - * - * PARAMETERS: mutex_id - The predefined ID for this mutex. - * - * RETURN: String containing the name of the mutex. Always returns a valid - * pointer. - * - * DESCRIPTION: Translate a mutex ID into a name string (Debug only) - * - ******************************************************************************/ - -char *acpi_ut_get_mutex_name(u32 mutex_id) -{ - - if (mutex_id > ACPI_MAX_MUTEX) { - return ("Invalid Mutex ID"); - } - - return (acpi_gbl_mutex_names[mutex_id]); -} - -/******************************************************************************* - * - * FUNCTION: acpi_ut_get_notify_name - * - * PARAMETERS: notify_value - Value from the Notify() request - * - * RETURN: String corresponding to the Notify Value. - * - * DESCRIPTION: Translate a Notify Value to a notify namestring. - * - ******************************************************************************/ - -/* Names for Notify() values, used for debug output */ - -static const char *acpi_gbl_notify_value_names[] = { - "Bus Check", - "Device Check", - "Device Wake", - "Eject Request", - "Device Check Light", - "Frequency Mismatch", - "Bus Mode Mismatch", - "Power Fault", - "Capabilities Check", - "Device PLD Check", - "Reserved", - "System Locality Update" -}; - -const char *acpi_ut_get_notify_name(u32 notify_value) -{ - - if (notify_value <= ACPI_NOTIFY_MAX) { - return (acpi_gbl_notify_value_names[notify_value]); - } else if (notify_value <= ACPI_MAX_SYS_NOTIFY) { - return ("Reserved"); - } else { /* Greater or equal to 0x80 */ - - return ("**Device Specific**"); - } -} -#endif - -/******************************************************************************* - * - * FUNCTION: acpi_ut_valid_object_type - * - * PARAMETERS: Type - Object type to be validated - * - * RETURN: TRUE if valid object type, FALSE otherwise - * - * DESCRIPTION: Validate an object type - * - ******************************************************************************/ - -u8 acpi_ut_valid_object_type(acpi_object_type type) -{ - - if (type > ACPI_TYPE_LOCAL_MAX) { - - /* Note: Assumes all TYPEs are contiguous (external/local) */ - - return (FALSE); - } - - return (TRUE); -} - -/******************************************************************************* - * * FUNCTION: acpi_ut_init_globals * * PARAMETERS: None @@ -806,6 +323,7 @@ acpi_status acpi_ut_init_globals(void) 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 */ diff --git a/drivers/acpi/acpica/utmutex.c b/drivers/acpi/acpica/utmutex.c index a946c68..7d797e2 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/Kconfig b/drivers/acpi/apei/Kconfig index fca34cc..66a03ca 100644 --- a/drivers/acpi/apei/Kconfig +++ b/drivers/acpi/apei/Kconfig @@ -1,5 +1,6 @@ config ACPI_APEI bool "ACPI Platform Error Interface (APEI)" + select PSTORE depends on X86 help APEI allows to report errors (for example from the chipset) @@ -21,6 +22,13 @@ config ACPI_APEI_GHES by firmware to produce more valuable hardware error information for Linux. +config ACPI_APEI_PCIEAER + bool "APEI PCIe AER logging/recovering support" + depends on ACPI_APEI && PCIEAER + help + PCIe AER errors may be reported via APEI firmware first mode. + Turn on this option to enable the corresponding support. + config ACPI_APEI_EINJ tristate "APEI Error INJection (EINJ)" depends on ACPI_APEI && DEBUG_FS diff --git a/drivers/acpi/apei/cper.c b/drivers/acpi/apei/cper.c index 31464a0..5d41894 100644 --- a/drivers/acpi/apei/cper.c +++ b/drivers/acpi/apei/cper.c @@ -29,6 +29,7 @@ #include <linux/time.h> #include <linux/cper.h> #include <linux/acpi.h> +#include <linux/aer.h> /* * CPER record ID need to be unique even after reboot, because record @@ -70,8 +71,8 @@ static const char *cper_severity_str(unsigned int severity) * If the output length is longer than 80, multiple line will be * printed, with @pfx is printed at the beginning of each line. */ -static void cper_print_bits(const char *pfx, unsigned int bits, - const char *strs[], unsigned int strs_size) +void cper_print_bits(const char *pfx, unsigned int bits, + const char *strs[], unsigned int strs_size) { int i, len = 0; const char *str; @@ -81,6 +82,8 @@ static void cper_print_bits(const char *pfx, unsigned int bits, if (!(bits & (1U << i))) continue; str = strs[i]; + if (!str) + continue; if (len && len + strlen(str) + 2 > 80) { printk("%s\n", buf); len = 0; @@ -243,7 +246,8 @@ static const char *cper_pcie_port_type_strs[] = { "root complex event collector", }; -static void cper_print_pcie(const char *pfx, const struct cper_sec_pcie *pcie) +static void cper_print_pcie(const char *pfx, const struct cper_sec_pcie *pcie, + const struct acpi_hest_generic_data *gdata) { if (pcie->validation_bits & CPER_PCIE_VALID_PORT_TYPE) printk("%s""port_type: %d, %s\n", pfx, pcie->port_type, @@ -276,6 +280,12 @@ static void cper_print_pcie(const char *pfx, const struct cper_sec_pcie *pcie) printk( "%s""bridge: secondary_status: 0x%04x, control: 0x%04x\n", pfx, pcie->bridge.secondary_status, pcie->bridge.control); +#ifdef CONFIG_ACPI_APEI_PCIEAER + if (pcie->validation_bits & CPER_PCIE_VALID_AER_INFO) { + struct aer_capability_regs *aer_regs = (void *)pcie->aer_info; + cper_print_aer(pfx, gdata->error_severity, aer_regs); + } +#endif } static const char *apei_estatus_section_flag_strs[] = { @@ -322,7 +332,7 @@ static void apei_estatus_print_section( struct cper_sec_pcie *pcie = (void *)(gdata + 1); printk("%s""section_type: PCIe error\n", pfx); if (gdata->error_data_length >= sizeof(*pcie)) - cper_print_pcie(pfx, pcie); + cper_print_pcie(pfx, pcie, gdata); else goto err_section_too_small; } else diff --git a/drivers/acpi/apei/erst-dbg.c b/drivers/acpi/apei/erst-dbg.c index de73caf..a4cfb64 100644 --- a/drivers/acpi/apei/erst-dbg.c +++ b/drivers/acpi/apei/erst-dbg.c @@ -43,12 +43,27 @@ static DEFINE_MUTEX(erst_dbg_mutex); static int erst_dbg_open(struct inode *inode, struct file *file) { + int rc, *pos; + if (erst_disable) return -ENODEV; + pos = (int *)&file->private_data; + + rc = erst_get_record_id_begin(pos); + if (rc) + return rc; + return nonseekable_open(inode, file); } +static int erst_dbg_release(struct inode *inode, struct file *file) +{ + erst_get_record_id_end(); + + return 0; +} + static long erst_dbg_ioctl(struct file *f, unsigned int cmd, unsigned long arg) { int rc; @@ -79,18 +94,20 @@ static long erst_dbg_ioctl(struct file *f, unsigned int cmd, unsigned long arg) static ssize_t erst_dbg_read(struct file *filp, char __user *ubuf, size_t usize, loff_t *off) { - int rc; + int rc, *pos; ssize_t len = 0; u64 id; - if (*off != 0) + if (*off) return -EINVAL; if (mutex_lock_interruptible(&erst_dbg_mutex) != 0) return -EINTR; + pos = (int *)&filp->private_data; + retry_next: - rc = erst_get_next_record_id(&id); + rc = erst_get_record_id_next(pos, &id); if (rc) goto out; /* no more record */ @@ -181,6 +198,7 @@ out: static const struct file_operations erst_dbg_ops = { .owner = THIS_MODULE, .open = erst_dbg_open, + .release = erst_dbg_release, .read = erst_dbg_read, .write = erst_dbg_write, .unlocked_ioctl = erst_dbg_ioctl, diff --git a/drivers/acpi/apei/erst.c b/drivers/acpi/apei/erst.c index cf6db6b..d6cb0ff 100644 --- a/drivers/acpi/apei/erst.c +++ b/drivers/acpi/apei/erst.c @@ -34,6 +34,7 @@ #include <linux/cper.h> #include <linux/nmi.h> #include <linux/hardirq.h> +#include <linux/pstore.h> #include <acpi/apei.h> #include "apei-internal.h" @@ -429,6 +430,22 @@ ssize_t erst_get_record_count(void) } EXPORT_SYMBOL_GPL(erst_get_record_count); +#define ERST_RECORD_ID_CACHE_SIZE_MIN 16 +#define ERST_RECORD_ID_CACHE_SIZE_MAX 1024 + +struct erst_record_id_cache { + struct mutex lock; + u64 *entries; + int len; + int size; + int refcount; +}; + +static struct erst_record_id_cache erst_record_id_cache = { + .lock = __MUTEX_INITIALIZER(erst_record_id_cache.lock), + .refcount = 0, +}; + static int __erst_get_next_record_id(u64 *record_id) { struct apei_exec_context ctx; @@ -443,26 +460,179 @@ static int __erst_get_next_record_id(u64 *record_id) return 0; } +int erst_get_record_id_begin(int *pos) +{ + int rc; + + if (erst_disable) + return -ENODEV; + + rc = mutex_lock_interruptible(&erst_record_id_cache.lock); + if (rc) + return rc; + erst_record_id_cache.refcount++; + mutex_unlock(&erst_record_id_cache.lock); + + *pos = 0; + + return 0; +} +EXPORT_SYMBOL_GPL(erst_get_record_id_begin); + +/* erst_record_id_cache.lock must be held by caller */ +static int __erst_record_id_cache_add_one(void) +{ + u64 id, prev_id, first_id; + int i, rc; + u64 *entries; + unsigned long flags; + + id = prev_id = first_id = APEI_ERST_INVALID_RECORD_ID; +retry: + raw_spin_lock_irqsave(&erst_lock, flags); + rc = __erst_get_next_record_id(&id); + raw_spin_unlock_irqrestore(&erst_lock, flags); + if (rc == -ENOENT) + return 0; + if (rc) + return rc; + if (id == APEI_ERST_INVALID_RECORD_ID) + return 0; + /* can not skip current ID, or loop back to first ID */ + if (id == prev_id || id == first_id) + return 0; + if (first_id == APEI_ERST_INVALID_RECORD_ID) + first_id = id; + prev_id = id; + + entries = erst_record_id_cache.entries; + for (i = 0; i < erst_record_id_cache.len; i++) { + if (entries[i] == id) + break; + } + /* record id already in cache, try next */ + if (i < erst_record_id_cache.len) + goto retry; + if (erst_record_id_cache.len >= erst_record_id_cache.size) { + int new_size, alloc_size; + u64 *new_entries; + + new_size = erst_record_id_cache.size * 2; + new_size = clamp_val(new_size, ERST_RECORD_ID_CACHE_SIZE_MIN, + ERST_RECORD_ID_CACHE_SIZE_MAX); + if (new_size <= erst_record_id_cache.size) { + if (printk_ratelimit()) + pr_warning(FW_WARN ERST_PFX + "too many record ID!\n"); + return 0; + } + alloc_size = new_size * sizeof(entries[0]); + if (alloc_size < PAGE_SIZE) + new_entries = kmalloc(alloc_size, GFP_KERNEL); + else + new_entries = vmalloc(alloc_size); + if (!new_entries) + return -ENOMEM; + memcpy(new_entries, entries, + erst_record_id_cache.len * sizeof(entries[0])); + if (erst_record_id_cache.size < PAGE_SIZE) + kfree(entries); + else + vfree(entries); + erst_record_id_cache.entries = entries = new_entries; + erst_record_id_cache.size = new_size; + } + entries[i] = id; + erst_record_id_cache.len++; + + return 1; +} + /* * Get the record ID of an existing error record on the persistent * storage. If there is no error record on the persistent storage, the * returned record_id is APEI_ERST_INVALID_RECORD_ID. */ -int erst_get_next_record_id(u64 *record_id) +int erst_get_record_id_next(int *pos, u64 *record_id) { - int rc; - unsigned long flags; + int rc = 0; + u64 *entries; if (erst_disable) return -ENODEV; - raw_spin_lock_irqsave(&erst_lock, flags); - rc = __erst_get_next_record_id(record_id); - raw_spin_unlock_irqrestore(&erst_lock, flags); + /* must be enclosed by erst_get_record_id_begin/end */ + BUG_ON(!erst_record_id_cache.refcount); + BUG_ON(*pos < 0 || *pos > erst_record_id_cache.len); + + mutex_lock(&erst_record_id_cache.lock); + entries = erst_record_id_cache.entries; + for (; *pos < erst_record_id_cache.len; (*pos)++) + if (entries[*pos] != APEI_ERST_INVALID_RECORD_ID) + break; + /* found next record id in cache */ + if (*pos < erst_record_id_cache.len) { + *record_id = entries[*pos]; + (*pos)++; + goto out_unlock; + } + + /* Try to add one more record ID to cache */ + rc = __erst_record_id_cache_add_one(); + if (rc < 0) + goto out_unlock; + /* successfully add one new ID */ + if (rc == 1) { + *record_id = erst_record_id_cache.entries[*pos]; + (*pos)++; + rc = 0; + } else { + *pos = -1; + *record_id = APEI_ERST_INVALID_RECORD_ID; + } +out_unlock: + mutex_unlock(&erst_record_id_cache.lock); return rc; } -EXPORT_SYMBOL_GPL(erst_get_next_record_id); +EXPORT_SYMBOL_GPL(erst_get_record_id_next); + +/* erst_record_id_cache.lock must be held by caller */ +static void __erst_record_id_cache_compact(void) +{ + int i, wpos = 0; + u64 *entries; + + if (erst_record_id_cache.refcount) + return; + + entries = erst_record_id_cache.entries; + for (i = 0; i < erst_record_id_cache.len; i++) { + if (entries[i] == APEI_ERST_INVALID_RECORD_ID) + continue; + if (wpos != i) + memcpy(&entries[wpos], &entries[i], sizeof(entries[i])); + wpos++; + } + erst_record_id_cache.len = wpos; +} + +void erst_get_record_id_end(void) +{ + /* + * erst_disable != 0 should be detected by invoker via the + * return value of erst_get_record_id_begin/next, so this + * function should not be called for erst_disable != 0. + */ + BUG_ON(erst_disable); + + mutex_lock(&erst_record_id_cache.lock); + erst_record_id_cache.refcount--; + BUG_ON(erst_record_id_cache.refcount < 0); + __erst_record_id_cache_compact(); + mutex_unlock(&erst_record_id_cache.lock); +} +EXPORT_SYMBOL_GPL(erst_get_record_id_end); static int __erst_write_to_storage(u64 offset) { @@ -703,56 +873,34 @@ ssize_t erst_read(u64 record_id, struct cper_record_header *record, } EXPORT_SYMBOL_GPL(erst_read); -/* - * If return value > buflen, the buffer size is not big enough, - * else if return value = 0, there is no more record to read, - * else if return value < 0, something goes wrong, - * else everything is OK, and return value is record length - */ -ssize_t erst_read_next(struct cper_record_header *record, size_t buflen) -{ - int rc; - ssize_t len; - unsigned long flags; - u64 record_id; - - if (erst_disable) - return -ENODEV; - - raw_spin_lock_irqsave(&erst_lock, flags); - rc = __erst_get_next_record_id(&record_id); - if (rc) { - raw_spin_unlock_irqrestore(&erst_lock, flags); - return rc; - } - /* no more record */ - if (record_id == APEI_ERST_INVALID_RECORD_ID) { - raw_spin_unlock_irqrestore(&erst_lock, flags); - return 0; - } - - len = __erst_read(record_id, record, buflen); - raw_spin_unlock_irqrestore(&erst_lock, flags); - - return len; -} -EXPORT_SYMBOL_GPL(erst_read_next); - int erst_clear(u64 record_id) { - int rc; + int rc, i; unsigned long flags; + u64 *entries; if (erst_disable) return -ENODEV; + rc = mutex_lock_interruptible(&erst_record_id_cache.lock); + if (rc) + return rc; raw_spin_lock_irqsave(&erst_lock, flags); if (erst_erange.attr & ERST_RANGE_NVRAM) rc = __erst_clear_from_nvram(record_id); else rc = __erst_clear_from_storage(record_id); raw_spin_unlock_irqrestore(&erst_lock, flags); - + if (rc) + goto out; + entries = erst_record_id_cache.entries; + for (i = 0; i < erst_record_id_cache.len; i++) { + if (entries[i] == record_id) + entries[i] = APEI_ERST_INVALID_RECORD_ID; + } + __erst_record_id_cache_compact(); +out: + mutex_unlock(&erst_record_id_cache.lock); return rc; } EXPORT_SYMBOL_GPL(erst_clear); @@ -781,6 +929,128 @@ static int erst_check_table(struct acpi_table_erst *erst_tab) return 0; } +static size_t erst_reader(u64 *id, enum pstore_type_id *type, + struct timespec *time); +static u64 erst_writer(enum pstore_type_id type, size_t size); + +static struct pstore_info erst_info = { + .owner = THIS_MODULE, + .name = "erst", + .read = erst_reader, + .write = erst_writer, + .erase = erst_clear +}; + +#define CPER_CREATOR_PSTORE \ + UUID_LE(0x75a574e3, 0x5052, 0x4b29, 0x8a, 0x8e, 0xbe, 0x2c, \ + 0x64, 0x90, 0xb8, 0x9d) +#define CPER_SECTION_TYPE_DMESG \ + UUID_LE(0xc197e04e, 0xd545, 0x4a70, 0x9c, 0x17, 0xa5, 0x54, \ + 0x94, 0x19, 0xeb, 0x12) +#define CPER_SECTION_TYPE_MCE \ + UUID_LE(0xfe08ffbe, 0x95e4, 0x4be7, 0xbc, 0x73, 0x40, 0x96, \ + 0x04, 0x4a, 0x38, 0xfc) + +struct cper_pstore_record { + struct cper_record_header hdr; + struct cper_section_descriptor sec_hdr; + char data[]; +} __packed; + +static size_t erst_reader(u64 *id, enum pstore_type_id *type, + struct timespec *time) +{ + int rc; + ssize_t len; + unsigned long flags; + u64 record_id; + struct cper_pstore_record *rcd = (struct cper_pstore_record *) + (erst_info.buf - sizeof(*rcd)); + + if (erst_disable) + return -ENODEV; + + raw_spin_lock_irqsave(&erst_lock, flags); +skip: + rc = __erst_get_next_record_id(&record_id); + if (rc) { + raw_spin_unlock_irqrestore(&erst_lock, flags); + return rc; + } + /* no more record */ + if (record_id == APEI_ERST_INVALID_RECORD_ID) { + raw_spin_unlock_irqrestore(&erst_lock, flags); + return 0; + } + + len = __erst_read(record_id, &rcd->hdr, sizeof(*rcd) + + erst_erange.size); + if (uuid_le_cmp(rcd->hdr.creator_id, CPER_CREATOR_PSTORE) != 0) + goto skip; + raw_spin_unlock_irqrestore(&erst_lock, flags); + + *id = record_id; + if (uuid_le_cmp(rcd->sec_hdr.section_type, + CPER_SECTION_TYPE_DMESG) == 0) + *type = PSTORE_TYPE_DMESG; + else if (uuid_le_cmp(rcd->sec_hdr.section_type, + CPER_SECTION_TYPE_MCE) == 0) + *type = PSTORE_TYPE_MCE; + else + *type = PSTORE_TYPE_UNKNOWN; + + if (rcd->hdr.validation_bits & CPER_VALID_TIMESTAMP) + time->tv_sec = rcd->hdr.timestamp; + else + time->tv_sec = 0; + time->tv_nsec = 0; + + return len - sizeof(*rcd); +} + +static u64 erst_writer(enum pstore_type_id type, size_t size) +{ + struct cper_pstore_record *rcd = (struct cper_pstore_record *) + (erst_info.buf - sizeof(*rcd)); + + memset(rcd, 0, sizeof(*rcd)); + memcpy(rcd->hdr.signature, CPER_SIG_RECORD, CPER_SIG_SIZE); + rcd->hdr.revision = CPER_RECORD_REV; + rcd->hdr.signature_end = CPER_SIG_END; + rcd->hdr.section_count = 1; + rcd->hdr.error_severity = CPER_SEV_FATAL; + /* timestamp valid. platform_id, partition_id are invalid */ + rcd->hdr.validation_bits = CPER_VALID_TIMESTAMP; + rcd->hdr.timestamp = get_seconds(); + rcd->hdr.record_length = sizeof(*rcd) + size; + rcd->hdr.creator_id = CPER_CREATOR_PSTORE; + rcd->hdr.notification_type = CPER_NOTIFY_MCE; + rcd->hdr.record_id = cper_next_record_id(); + rcd->hdr.flags = CPER_HW_ERROR_FLAGS_PREVERR; + + rcd->sec_hdr.section_offset = sizeof(*rcd); + rcd->sec_hdr.section_length = size; + rcd->sec_hdr.revision = CPER_SEC_REV; + /* fru_id and fru_text is invalid */ + rcd->sec_hdr.validation_bits = 0; + rcd->sec_hdr.flags = CPER_SEC_PRIMARY; + switch (type) { + case PSTORE_TYPE_DMESG: + rcd->sec_hdr.section_type = CPER_SECTION_TYPE_DMESG; + break; + case PSTORE_TYPE_MCE: + rcd->sec_hdr.section_type = CPER_SECTION_TYPE_MCE; + break; + default: + return -EINVAL; + } + rcd->sec_hdr.section_severity = CPER_SEV_FATAL; + + erst_write(&rcd->hdr); + + return rcd->hdr.record_id; +} + static int __init erst_init(void) { int rc = 0; @@ -788,6 +1058,7 @@ static int __init erst_init(void) struct apei_exec_context ctx; struct apei_resources erst_resources; struct resource *r; + char *buf; if (acpi_disabled) goto err; @@ -854,6 +1125,18 @@ static int __init erst_init(void) if (!erst_erange.vaddr) goto err_release_erange; + buf = kmalloc(erst_erange.size, GFP_KERNEL); + mutex_init(&erst_info.buf_mutex); + if (buf) { + erst_info.buf = buf + sizeof(struct cper_pstore_record); + erst_info.bufsize = erst_erange.size - + sizeof(struct cper_pstore_record); + if (pstore_register(&erst_info)) { + pr_info(ERST_PFX "Could not register with persistent store\n"); + kfree(buf); + } + } + pr_info(ERST_PFX "Error Record Serialization Table (ERST) support is initialized.\n"); diff --git a/drivers/acpi/apei/ghes.c b/drivers/acpi/apei/ghes.c index d1d484d..f703b28 100644 --- a/drivers/acpi/apei/ghes.c +++ b/drivers/acpi/apei/ghes.c @@ -241,7 +241,7 @@ static inline int ghes_severity(int severity) case CPER_SEV_FATAL: return GHES_SEV_PANIC; default: - /* Unkown, go panic */ + /* Unknown, go panic */ return GHES_SEV_PANIC; } } diff --git a/drivers/acpi/battery.c b/drivers/acpi/battery.c index ac1a599..fcc13ac 100644 --- a/drivers/acpi/battery.c +++ b/drivers/acpi/battery.c @@ -33,6 +33,7 @@ #include <linux/async.h> #include <linux/dmi.h> #include <linux/slab.h> +#include <linux/suspend.h> #ifdef CONFIG_ACPI_PROCFS_POWER #include <linux/proc_fs.h> @@ -102,6 +103,7 @@ struct acpi_battery { struct mutex lock; struct power_supply bat; struct acpi_device *device; + struct notifier_block pm_nb; unsigned long update_time; int rate_now; int capacity_now; @@ -940,6 +942,21 @@ static void acpi_battery_notify(struct acpi_device *device, u32 event) power_supply_changed(&battery->bat); } +static int battery_notify(struct notifier_block *nb, + unsigned long mode, void *_unused) +{ + struct acpi_battery *battery = container_of(nb, struct acpi_battery, + pm_nb); + switch (mode) { + case PM_POST_SUSPEND: + sysfs_remove_battery(battery); + sysfs_add_battery(battery); + break; + } + + return 0; +} + static int acpi_battery_add(struct acpi_device *device) { int result = 0; @@ -972,6 +989,10 @@ static int acpi_battery_add(struct acpi_device *device) #endif kfree(battery); } + + battery->pm_nb.notifier_call = battery_notify; + register_pm_notifier(&battery->pm_nb); + return result; } @@ -982,6 +1003,7 @@ static int acpi_battery_remove(struct acpi_device *device, int type) if (!device || !acpi_driver_data(device)) return -EINVAL; battery = acpi_driver_data(device); + unregister_pm_notifier(&battery->pm_nb); #ifdef CONFIG_ACPI_PROCFS_POWER acpi_battery_remove_fs(device); #endif diff --git a/drivers/acpi/bus.c b/drivers/acpi/bus.c index 7ced61f..d1e06c1 100644 --- a/drivers/acpi/bus.c +++ b/drivers/acpi/bus.c @@ -40,6 +40,7 @@ #include <acpi/acpi_bus.h> #include <acpi/acpi_drivers.h> #include <linux/dmi.h> +#include <linux/suspend.h> #include "internal.h" @@ -226,7 +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 */ @@ -1006,8 +1007,7 @@ struct kobject *acpi_kobj; static int __init acpi_init(void) { - int result = 0; - + int result; if (acpi_disabled) { printk(KERN_INFO PREFIX "Interpreter disabled.\n"); @@ -1022,29 +1022,18 @@ static int __init acpi_init(void) init_acpi_device_notify(); result = acpi_bus_init(); - - if (!result) { - pci_mmcfg_late_init(); - if (!(pm_flags & PM_APM)) - pm_flags |= PM_ACPI; - else { - printk(KERN_INFO PREFIX - "APM is already active, exiting\n"); - disable_acpi(); - result = -ENODEV; - } - } else + if (result) { disable_acpi(); - - if (acpi_disabled) return result; + } + pci_mmcfg_late_init(); acpi_scan_init(); acpi_ec_init(); acpi_debugfs_init(); acpi_sleep_proc_init(); acpi_wakeup_device_init(); - return result; + return 0; } subsys_initcall(acpi_init); diff --git a/drivers/acpi/button.c b/drivers/acpi/button.c index 76bbb78..d27d072 100644 --- a/drivers/acpi/button.c +++ b/drivers/acpi/button.c @@ -78,8 +78,6 @@ static int acpi_button_add(struct acpi_device *device); static int acpi_button_remove(struct acpi_device *device, int type); static int acpi_button_resume(struct acpi_device *device); static void acpi_button_notify(struct acpi_device *device, u32 event); -static int acpi_button_info_open_fs(struct inode *inode, struct file *file); -static int acpi_button_state_open_fs(struct inode *inode, struct file *file); static struct acpi_driver acpi_button_driver = { .name = "button", @@ -98,22 +96,7 @@ struct acpi_button { struct input_dev *input; char phys[32]; /* for input device */ unsigned long pushed; -}; - -static const struct file_operations acpi_button_info_fops = { - .owner = THIS_MODULE, - .open = acpi_button_info_open_fs, - .read = seq_read, - .llseek = seq_lseek, - .release = single_release, -}; - -static const struct file_operations acpi_button_state_fops = { - .owner = THIS_MODULE, - .open = acpi_button_state_open_fs, - .read = seq_read, - .llseek = seq_lseek, - .release = single_release, + bool wakeup_enabled; }; static BLOCKING_NOTIFIER_HEAD(acpi_lid_notifier); @@ -124,20 +107,7 @@ static struct acpi_device *lid_device; -------------------------------------------------------------------------- */ static struct proc_dir_entry *acpi_button_dir; - -static int acpi_button_info_seq_show(struct seq_file *seq, void *offset) -{ - struct acpi_device *device = seq->private; - - seq_printf(seq, "type: %s\n", - acpi_device_name(device)); - return 0; -} - -static int acpi_button_info_open_fs(struct inode *inode, struct file *file) -{ - return single_open(file, acpi_button_info_seq_show, PDE(inode)->data); -} +static struct proc_dir_entry *acpi_lid_dir; static int acpi_button_state_seq_show(struct seq_file *seq, void *offset) { @@ -157,77 +127,85 @@ static int acpi_button_state_open_fs(struct inode *inode, struct file *file) return single_open(file, acpi_button_state_seq_show, PDE(inode)->data); } -static struct proc_dir_entry *acpi_power_dir; -static struct proc_dir_entry *acpi_sleep_dir; -static struct proc_dir_entry *acpi_lid_dir; +static const struct file_operations acpi_button_state_fops = { + .owner = THIS_MODULE, + .open = acpi_button_state_open_fs, + .read = seq_read, + .llseek = seq_lseek, + .release = single_release, +}; static int acpi_button_add_fs(struct acpi_device *device) { struct acpi_button *button = acpi_driver_data(device); struct proc_dir_entry *entry = NULL; + int ret = 0; - switch (button->type) { - case ACPI_BUTTON_TYPE_POWER: - if (!acpi_power_dir) - acpi_power_dir = proc_mkdir(ACPI_BUTTON_SUBCLASS_POWER, - acpi_button_dir); - entry = acpi_power_dir; - break; - case ACPI_BUTTON_TYPE_SLEEP: - if (!acpi_sleep_dir) - acpi_sleep_dir = proc_mkdir(ACPI_BUTTON_SUBCLASS_SLEEP, - acpi_button_dir); - entry = acpi_sleep_dir; - break; - case ACPI_BUTTON_TYPE_LID: - if (!acpi_lid_dir) - acpi_lid_dir = proc_mkdir(ACPI_BUTTON_SUBCLASS_LID, - acpi_button_dir); - entry = acpi_lid_dir; - break; + /* procfs I/F for ACPI lid device only */ + if (button->type != ACPI_BUTTON_TYPE_LID) + return 0; + + if (acpi_button_dir || acpi_lid_dir) { + printk(KERN_ERR PREFIX "More than one Lid device found!\n"); + return -EEXIST; } - if (!entry) + /* create /proc/acpi/button */ + acpi_button_dir = proc_mkdir(ACPI_BUTTON_CLASS, acpi_root_dir); + if (!acpi_button_dir) return -ENODEV; - acpi_device_dir(device) = proc_mkdir(acpi_device_bid(device), entry); - if (!acpi_device_dir(device)) - return -ENODEV; + /* create /proc/acpi/button/lid */ + acpi_lid_dir = proc_mkdir(ACPI_BUTTON_SUBCLASS_LID, acpi_button_dir); + if (!acpi_lid_dir) { + ret = -ENODEV; + goto remove_button_dir; + } - /* 'info' [R] */ - entry = proc_create_data(ACPI_BUTTON_FILE_INFO, - S_IRUGO, acpi_device_dir(device), - &acpi_button_info_fops, device); - if (!entry) - return -ENODEV; + /* create /proc/acpi/button/lid/LID/ */ + acpi_device_dir(device) = proc_mkdir(acpi_device_bid(device), acpi_lid_dir); + if (!acpi_device_dir(device)) { + ret = -ENODEV; + goto remove_lid_dir; + } - /* show lid state [R] */ - if (button->type == ACPI_BUTTON_TYPE_LID) { - entry = proc_create_data(ACPI_BUTTON_FILE_STATE, - S_IRUGO, acpi_device_dir(device), - &acpi_button_state_fops, device); - if (!entry) - return -ENODEV; + /* create /proc/acpi/button/lid/LID/state */ + entry = proc_create_data(ACPI_BUTTON_FILE_STATE, + S_IRUGO, acpi_device_dir(device), + &acpi_button_state_fops, device); + if (!entry) { + ret = -ENODEV; + goto remove_dev_dir; } - return 0; +done: + return ret; + +remove_dev_dir: + remove_proc_entry(acpi_device_bid(device), + acpi_lid_dir); + acpi_device_dir(device) = NULL; +remove_lid_dir: + remove_proc_entry(ACPI_BUTTON_SUBCLASS_LID, acpi_button_dir); +remove_button_dir: + remove_proc_entry(ACPI_BUTTON_CLASS, acpi_root_dir); + goto done; } static int acpi_button_remove_fs(struct acpi_device *device) { struct acpi_button *button = acpi_driver_data(device); - if (acpi_device_dir(device)) { - if (button->type == ACPI_BUTTON_TYPE_LID) - remove_proc_entry(ACPI_BUTTON_FILE_STATE, - acpi_device_dir(device)); - remove_proc_entry(ACPI_BUTTON_FILE_INFO, - acpi_device_dir(device)); + if (button->type != ACPI_BUTTON_TYPE_LID) + return 0; - remove_proc_entry(acpi_device_bid(device), - acpi_device_dir(device)->parent); - acpi_device_dir(device) = NULL; - } + remove_proc_entry(ACPI_BUTTON_FILE_STATE, + acpi_device_dir(device)); + remove_proc_entry(acpi_device_bid(device), + acpi_lid_dir); + acpi_device_dir(device) = NULL; + remove_proc_entry(ACPI_BUTTON_SUBCLASS_LID, acpi_button_dir); + remove_proc_entry(ACPI_BUTTON_CLASS, acpi_root_dir); return 0; } @@ -430,8 +408,10 @@ static int acpi_button_add(struct acpi_device *device) /* Button's GPE is run-wake GPE */ acpi_enable_gpe(device->wakeup.gpe_device, device->wakeup.gpe_number); - device->wakeup.run_wake_count++; - device_set_wakeup_enable(&device->dev, true); + if (!device_may_wakeup(&device->dev)) { + device_set_wakeup_enable(&device->dev, true); + button->wakeup_enabled = true; + } } printk(KERN_INFO PREFIX "%s [%s]\n", name, acpi_device_bid(device)); @@ -453,8 +433,8 @@ static int acpi_button_remove(struct acpi_device *device, int type) if (device->wakeup.flags.valid) { acpi_disable_gpe(device->wakeup.gpe_device, device->wakeup.gpe_number); - device->wakeup.run_wake_count--; - device_set_wakeup_enable(&device->dev, false); + if (button->wakeup_enabled) + device_set_wakeup_enable(&device->dev, false); } acpi_button_remove_fs(device); @@ -465,32 +445,12 @@ static int acpi_button_remove(struct acpi_device *device, int type) static int __init acpi_button_init(void) { - int result; - - acpi_button_dir = proc_mkdir(ACPI_BUTTON_CLASS, acpi_root_dir); - if (!acpi_button_dir) - return -ENODEV; - - result = acpi_bus_register_driver(&acpi_button_driver); - if (result < 0) { - remove_proc_entry(ACPI_BUTTON_CLASS, acpi_root_dir); - return -ENODEV; - } - - return 0; + return acpi_bus_register_driver(&acpi_button_driver); } static void __exit acpi_button_exit(void) { acpi_bus_unregister_driver(&acpi_button_driver); - - if (acpi_power_dir) - remove_proc_entry(ACPI_BUTTON_SUBCLASS_POWER, acpi_button_dir); - if (acpi_sleep_dir) - remove_proc_entry(ACPI_BUTTON_SUBCLASS_SLEEP, acpi_button_dir); - if (acpi_lid_dir) - remove_proc_entry(ACPI_BUTTON_SUBCLASS_LID, acpi_button_dir); - remove_proc_entry(ACPI_BUTTON_CLASS, acpi_root_dir); } module_init(acpi_button_init); diff --git a/drivers/acpi/custom_method.c b/drivers/acpi/custom_method.c new file mode 100644 index 0000000..5d42c24 --- /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 384f7ab..182a9fc 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 fa848c4..0b954c6 100644 --- a/drivers/acpi/ec.c +++ b/drivers/acpi/ec.c @@ -938,8 +938,19 @@ 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/ec_sys.c b/drivers/acpi/ec_sys.c index 411620e..05b4420 100644 --- a/drivers/acpi/ec_sys.c +++ b/drivers/acpi/ec_sys.c @@ -24,10 +24,6 @@ MODULE_PARM_DESC(write_support, "Dangerous, reboot and removal of battery may " #define EC_SPACE_SIZE 256 -struct sysdev_class acpi_ec_sysdev_class = { - .name = "ec", -}; - static struct dentry *acpi_ec_debugfs_dir; static int acpi_ec_open_io(struct inode *i, struct file *f) diff --git a/drivers/acpi/internal.h b/drivers/acpi/internal.h index b1cc81a..ca75b9c 100644 --- a/drivers/acpi/internal.h +++ b/drivers/acpi/internal.h @@ -21,8 +21,6 @@ #ifndef _ACPI_INTERNAL_H_ #define _ACPI_INTERNAL_H_ -#include <linux/sysdev.h> - #define PREFIX "ACPI: " int init_acpi_device_notify(void); @@ -30,9 +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 /* -------------------------------------------------------------------------- @@ -64,7 +63,6 @@ struct acpi_ec { struct list_head list; struct transaction *curr; spinlock_t curr_lock; - struct sys_device sysdev; }; extern struct acpi_ec *first_ec; diff --git a/drivers/acpi/numa.c b/drivers/acpi/numa.c index 5eb25eb..3b5c318 100644 --- a/drivers/acpi/numa.c +++ b/drivers/acpi/numa.c @@ -274,7 +274,7 @@ acpi_table_parse_srat(enum acpi_srat_type id, int __init acpi_numa_init(void) { - int ret = 0; + int cnt = 0; /* * Should not limit number with cpu num that is from NR_CPUS or nr_cpus= @@ -288,7 +288,7 @@ int __init acpi_numa_init(void) acpi_parse_x2apic_affinity, 0); acpi_table_parse_srat(ACPI_SRAT_TYPE_CPU_AFFINITY, acpi_parse_processor_affinity, 0); - ret = acpi_table_parse_srat(ACPI_SRAT_TYPE_MEMORY_AFFINITY, + cnt = acpi_table_parse_srat(ACPI_SRAT_TYPE_MEMORY_AFFINITY, acpi_parse_memory_affinity, NR_NODE_MEMBLKS); } @@ -297,7 +297,10 @@ int __init acpi_numa_init(void) acpi_table_parse(ACPI_SIG_SLIT, acpi_parse_slit); acpi_numa_arch_fixup(); - return ret; + + if (cnt <= 0) + return cnt ?: -ENOENT; + return 0; } int acpi_get_pxm(acpi_handle h) diff --git a/drivers/acpi/nvs.c b/drivers/acpi/nvs.c index fa5a1df..096787b 100644 --- a/drivers/acpi/nvs.c +++ b/drivers/acpi/nvs.c @@ -26,6 +26,7 @@ struct nvs_page { unsigned int size; void *kaddr; void *data; + bool unmap; struct list_head node; }; @@ -44,6 +45,9 @@ int suspend_nvs_register(unsigned long start, unsigned long size) { struct nvs_page *entry, *next; + pr_info("PM: Registering ACPI NVS region at %lx (%ld bytes)\n", + start, size); + while (size > 0) { unsigned int nr_bytes; @@ -81,7 +85,13 @@ void suspend_nvs_free(void) free_page((unsigned long)entry->data); entry->data = NULL; if (entry->kaddr) { - iounmap(entry->kaddr); + if (entry->unmap) { + iounmap(entry->kaddr); + entry->unmap = false; + } else { + acpi_os_unmap_memory(entry->kaddr, + entry->size); + } entry->kaddr = NULL; } } @@ -115,8 +125,14 @@ int suspend_nvs_save(void) list_for_each_entry(entry, &nvs_list, node) if (entry->data) { - entry->kaddr = acpi_os_ioremap(entry->phys_start, - entry->size); + unsigned long phys = entry->phys_start; + unsigned int size = entry->size; + + entry->kaddr = acpi_os_get_iomem(phys, size); + if (!entry->kaddr) { + entry->kaddr = acpi_os_ioremap(phys, size); + entry->unmap = !!entry->kaddr; + } if (!entry->kaddr) { suspend_nvs_free(); return -ENOMEM; diff --git a/drivers/acpi/osl.c b/drivers/acpi/osl.c index c90c76a..52ca964 100644 --- a/drivers/acpi/osl.c +++ b/drivers/acpi/osl.c @@ -76,7 +76,6 @@ EXPORT_SYMBOL(acpi_in_debugger); extern char line_buf[80]; #endif /*ENABLE_DEBUGGER */ -static unsigned int acpi_irq_irq; static acpi_osd_handler acpi_irq_handler; static void *acpi_irq_context; static struct workqueue_struct *kacpid_wq; @@ -105,11 +104,11 @@ struct acpi_ioremap { void __iomem *virt; acpi_physical_address phys; acpi_size size; - struct kref ref; + unsigned long refcount; }; static LIST_HEAD(acpi_ioremaps); -static DEFINE_SPINLOCK(acpi_ioremap_lock); +static DEFINE_MUTEX(acpi_ioremap_lock); static void __init acpi_osi_setup_late(void); @@ -285,6 +284,22 @@ acpi_map_vaddr_lookup(acpi_physical_address phys, unsigned int size) return NULL; } +void __iomem *acpi_os_get_iomem(acpi_physical_address phys, unsigned int size) +{ + struct acpi_ioremap *map; + void __iomem *virt = NULL; + + mutex_lock(&acpi_ioremap_lock); + map = acpi_map_lookup(phys, size); + if (map) { + virt = map->virt + (phys - map->phys); + map->refcount++; + } + mutex_unlock(&acpi_ioremap_lock); + return virt; +} +EXPORT_SYMBOL_GPL(acpi_os_get_iomem); + /* Must be called with 'acpi_ioremap_lock' or RCU read lock held. */ static struct acpi_ioremap * acpi_map_lookup_virt(void __iomem *virt, acpi_size size) @@ -302,8 +317,7 @@ acpi_map_lookup_virt(void __iomem *virt, acpi_size size) void __iomem *__init_refok acpi_os_map_memory(acpi_physical_address phys, acpi_size size) { - struct acpi_ioremap *map, *tmp_map; - unsigned long flags; + struct acpi_ioremap *map; void __iomem *virt; acpi_physical_address pg_off; acpi_size pg_sz; @@ -316,14 +330,25 @@ acpi_os_map_memory(acpi_physical_address phys, acpi_size size) if (!acpi_gbl_permanent_mmap) return __acpi_map_table((unsigned long)phys, size); + mutex_lock(&acpi_ioremap_lock); + /* Check if there's a suitable mapping already. */ + map = acpi_map_lookup(phys, size); + if (map) { + map->refcount++; + goto out; + } + map = kzalloc(sizeof(*map), GFP_KERNEL); - if (!map) + if (!map) { + mutex_unlock(&acpi_ioremap_lock); return NULL; + } pg_off = round_down(phys, PAGE_SIZE); pg_sz = round_up(phys + size, PAGE_SIZE) - pg_off; virt = acpi_os_ioremap(pg_off, pg_sz); if (!virt) { + mutex_unlock(&acpi_ioremap_lock); kfree(map); return NULL; } @@ -332,62 +357,51 @@ acpi_os_map_memory(acpi_physical_address phys, acpi_size size) map->virt = virt; map->phys = pg_off; map->size = pg_sz; - kref_init(&map->ref); - - spin_lock_irqsave(&acpi_ioremap_lock, flags); - /* Check if page has already been mapped. */ - tmp_map = acpi_map_lookup(phys, size); - if (tmp_map) { - kref_get(&tmp_map->ref); - spin_unlock_irqrestore(&acpi_ioremap_lock, flags); - iounmap(map->virt); - kfree(map); - return tmp_map->virt + (phys - tmp_map->phys); - } + map->refcount = 1; + list_add_tail_rcu(&map->list, &acpi_ioremaps); - spin_unlock_irqrestore(&acpi_ioremap_lock, flags); + out: + mutex_unlock(&acpi_ioremap_lock); return map->virt + (phys - map->phys); } EXPORT_SYMBOL_GPL(acpi_os_map_memory); -static void acpi_kref_del_iomap(struct kref *ref) +static void acpi_os_drop_map_ref(struct acpi_ioremap *map) { - struct acpi_ioremap *map; + if (!--map->refcount) + list_del_rcu(&map->list); +} - map = container_of(ref, struct acpi_ioremap, ref); - list_del_rcu(&map->list); +static void acpi_os_map_cleanup(struct acpi_ioremap *map) +{ + if (!map->refcount) { + synchronize_rcu(); + iounmap(map->virt); + kfree(map); + } } void __ref acpi_os_unmap_memory(void __iomem *virt, acpi_size size) { struct acpi_ioremap *map; - unsigned long flags; - int del; if (!acpi_gbl_permanent_mmap) { __acpi_unmap_table(virt, size); return; } - spin_lock_irqsave(&acpi_ioremap_lock, flags); + mutex_lock(&acpi_ioremap_lock); map = acpi_map_lookup_virt(virt, size); if (!map) { - spin_unlock_irqrestore(&acpi_ioremap_lock, flags); - printk(KERN_ERR PREFIX "%s: bad address %p\n", __func__, virt); - dump_stack(); + mutex_unlock(&acpi_ioremap_lock); + WARN(true, PREFIX "%s: bad address %p\n", __func__, virt); return; } + acpi_os_drop_map_ref(map); + mutex_unlock(&acpi_ioremap_lock); - del = kref_put(&map->ref, acpi_kref_del_iomap); - spin_unlock_irqrestore(&acpi_ioremap_lock, flags); - - if (!del) - return; - - synchronize_rcu(); - iounmap(map->virt); - kfree(map); + acpi_os_map_cleanup(map); } EXPORT_SYMBOL_GPL(acpi_os_unmap_memory); @@ -397,7 +411,7 @@ void __init early_acpi_os_unmap_memory(void __iomem *virt, acpi_size size) __acpi_unmap_table(virt, size); } -int acpi_os_map_generic_address(struct acpi_generic_address *addr) +static int acpi_os_map_generic_address(struct acpi_generic_address *addr) { void __iomem *virt; @@ -413,13 +427,10 @@ int acpi_os_map_generic_address(struct acpi_generic_address *addr) return 0; } -EXPORT_SYMBOL_GPL(acpi_os_map_generic_address); -void acpi_os_unmap_generic_address(struct acpi_generic_address *addr) +static void acpi_os_unmap_generic_address(struct acpi_generic_address *addr) { - void __iomem *virt; - unsigned long flags; - acpi_size size = addr->bit_width / 8; + struct acpi_ioremap *map; if (addr->space_id != ACPI_ADR_SPACE_SYSTEM_MEMORY) return; @@ -427,13 +438,17 @@ void acpi_os_unmap_generic_address(struct acpi_generic_address *addr) if (!addr->address || !addr->bit_width) return; - spin_lock_irqsave(&acpi_ioremap_lock, flags); - virt = acpi_map_vaddr_lookup(addr->address, size); - spin_unlock_irqrestore(&acpi_ioremap_lock, flags); + mutex_lock(&acpi_ioremap_lock); + map = acpi_map_lookup(addr->address, addr->bit_width / 8); + if (!map) { + mutex_unlock(&acpi_ioremap_lock); + return; + } + acpi_os_drop_map_ref(map); + mutex_unlock(&acpi_ioremap_lock); - acpi_os_unmap_memory(virt, size); + acpi_os_map_cleanup(map); } -EXPORT_SYMBOL_GPL(acpi_os_unmap_generic_address); #ifdef ACPI_FUTURE_USAGE acpi_status @@ -516,11 +531,15 @@ acpi_os_install_interrupt_handler(u32 gsi, acpi_osd_handler handler, acpi_irq_stats_init(); /* - * Ignore the GSI from the core, and use the value in our copy of the - * FADT. It may not be the same if an interrupt source override exists - * for the SCI. + * ACPI interrupts different from the SCI in our copy of the FADT are + * not supported. */ - gsi = acpi_gbl_FADT.sci_interrupt; + if (gsi != acpi_gbl_FADT.sci_interrupt) + return AE_BAD_PARAMETER; + + if (acpi_irq_handler) + return AE_ALREADY_ACQUIRED; + if (acpi_gsi_to_irq(gsi, &irq) < 0) { printk(KERN_ERR PREFIX "SCI (ACPI GSI %d) not registered\n", gsi); @@ -531,20 +550,20 @@ acpi_os_install_interrupt_handler(u32 gsi, acpi_osd_handler handler, acpi_irq_context = context; if (request_irq(irq, acpi_irq, IRQF_SHARED, "acpi", acpi_irq)) { printk(KERN_ERR PREFIX "SCI (IRQ%d) allocation failed\n", irq); + acpi_irq_handler = NULL; return AE_NOT_ACQUIRED; } - acpi_irq_irq = irq; return AE_OK; } acpi_status acpi_os_remove_interrupt_handler(u32 irq, acpi_osd_handler handler) { - if (irq) { - free_irq(irq, acpi_irq); - acpi_irq_handler = NULL; - acpi_irq_irq = 0; - } + if (irq != acpi_gbl_FADT.sci_interrupt) + return AE_BAD_PARAMETER; + + free_irq(irq, acpi_irq); + acpi_irq_handler = NULL; return AE_OK; } @@ -883,14 +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) { @@ -1322,6 +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. @@ -1589,9 +1625,9 @@ acpi_status __init acpi_os_initialize(void) acpi_status __init acpi_os_initialize1(void) { - kacpid_wq = create_workqueue("kacpid"); - kacpi_notify_wq = create_workqueue("kacpi_notify"); - kacpi_hotplug_wq = create_workqueue("kacpi_hotplug"); + kacpid_wq = alloc_workqueue("kacpid", 0, 1); + kacpi_notify_wq = alloc_workqueue("kacpi_notify", 0, 1); + kacpi_hotplug_wq = alloc_workqueue("kacpi_hotplug", 0, 1); BUG_ON(!kacpid_wq); BUG_ON(!kacpi_notify_wq); BUG_ON(!kacpi_hotplug_wq); @@ -1603,7 +1639,7 @@ acpi_status __init acpi_os_initialize1(void) acpi_status acpi_os_terminate(void) { if (acpi_irq_handler) { - acpi_os_remove_interrupt_handler(acpi_irq_irq, + acpi_os_remove_interrupt_handler(acpi_gbl_FADT.sci_interrupt, acpi_irq_handler); } diff --git a/drivers/acpi/pci_link.c b/drivers/acpi/pci_link.c index 9ff80a7..4a29763 100644 --- a/drivers/acpi/pci_link.c +++ b/drivers/acpi/pci_link.c @@ -29,7 +29,7 @@ * for IRQ management (e.g. start()->_SRS). */ -#include <linux/sysdev.h> +#include <linux/syscore_ops.h> #include <linux/kernel.h> #include <linux/module.h> #include <linux/init.h> @@ -757,14 +757,13 @@ static int acpi_pci_link_resume(struct acpi_pci_link *link) return 0; } -static int irqrouter_resume(struct sys_device *dev) +static void irqrouter_resume(void) { struct acpi_pci_link *link; list_for_each_entry(link, &acpi_link_list, list) { acpi_pci_link_resume(link); } - return 0; } static int acpi_pci_link_remove(struct acpi_device *device, int type) @@ -871,32 +870,19 @@ static int __init acpi_irq_balance_set(char *str) __setup("acpi_irq_balance", acpi_irq_balance_set); -/* FIXME: we will remove this interface after all drivers call pci_disable_device */ -static struct sysdev_class irqrouter_sysdev_class = { - .name = "irqrouter", +static struct syscore_ops irqrouter_syscore_ops = { .resume = irqrouter_resume, }; -static struct sys_device device_irqrouter = { - .id = 0, - .cls = &irqrouter_sysdev_class, -}; - -static int __init irqrouter_init_sysfs(void) +static int __init irqrouter_init_ops(void) { - int error; + if (!acpi_disabled && !acpi_noirq) + register_syscore_ops(&irqrouter_syscore_ops); - if (acpi_disabled || acpi_noirq) - return 0; - - error = sysdev_class_register(&irqrouter_sysdev_class); - if (!error) - error = sysdev_register(&device_irqrouter); - - return error; + return 0; } -device_initcall(irqrouter_init_sysfs); +device_initcall(irqrouter_init_ops); static int __init acpi_pci_link_init(void) { diff --git a/drivers/acpi/pci_root.c b/drivers/acpi/pci_root.c index 8524939..f911a2f 100644 --- a/drivers/acpi/pci_root.c +++ b/drivers/acpi/pci_root.c @@ -32,6 +32,7 @@ #include <linux/pm_runtime.h> #include <linux/pci.h> #include <linux/pci-acpi.h> +#include <linux/pci-aspm.h> #include <linux/acpi.h> #include <linux/slab.h> #include <acpi/acpi_bus.h> @@ -564,7 +565,7 @@ static int __devinit acpi_pci_root_add(struct acpi_device *device) /* Indicate support for various _OSC capabilities. */ if (pci_ext_cfg_avail(root->bus->self)) flags |= OSC_EXT_PCI_CONFIG_SUPPORT; - if (pcie_aspm_enabled()) + if (pcie_aspm_support_enabled()) flags |= OSC_ACTIVE_STATE_PWR_SUPPORT | OSC_CLOCK_PWR_CAPABILITY_SUPPORT; if (pci_msi_enabled()) @@ -591,12 +592,16 @@ static int __devinit acpi_pci_root_add(struct acpi_device *device) status = acpi_pci_osc_control_set(device->handle, &flags, OSC_PCI_EXPRESS_CAP_STRUCTURE_CONTROL); - if (ACPI_SUCCESS(status)) + if (ACPI_SUCCESS(status)) { dev_info(root->bus->bridge, "ACPI _OSC control (0x%02x) granted\n", flags); - else + } 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"); + pcie_no_aspm(); + } } pci_acpi_add_bus_pm_notifier(device, root->bus); diff --git a/drivers/acpi/processor_core.c b/drivers/acpi/processor_core.c index 3c1a2fe..02d2a4c 100644 --- a/drivers/acpi/processor_core.c +++ b/drivers/acpi/processor_core.c @@ -19,7 +19,7 @@ #define _COMPONENT ACPI_PROCESSOR_COMPONENT ACPI_MODULE_NAME("processor_core"); -static int set_no_mwait(const struct dmi_system_id *id) +static int __init set_no_mwait(const struct dmi_system_id *id) { printk(KERN_NOTICE PREFIX "%s detected - " "disabling mwait for CPU C-states\n", id->ident); @@ -27,7 +27,7 @@ static int set_no_mwait(const struct dmi_system_id *id) return 0; } -static struct dmi_system_id __cpuinitdata processor_idle_dmi_table[] = { +static struct dmi_system_id __initdata processor_idle_dmi_table[] = { { set_no_mwait, "Extensa 5220", { DMI_MATCH(DMI_BIOS_VENDOR, "Phoenix Technologies LTD"), @@ -37,7 +37,6 @@ static struct dmi_system_id __cpuinitdata 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); @@ -174,16 +175,21 @@ 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 processor_physically_present(acpi_handle handle) +static bool __init processor_physically_present(acpi_handle handle) { int cpuid, type; u32 acpi_id; @@ -217,13 +223,13 @@ static bool 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; } -static void acpi_set_pdc_bits(u32 *buf) +static void __cpuinit acpi_set_pdc_bits(u32 *buf) { buf[0] = ACPI_PDC_REVISION_ID; buf[1] = 1; @@ -235,7 +241,7 @@ static void acpi_set_pdc_bits(u32 *buf) arch_acpi_set_pdc_bits(buf); } -static struct acpi_object_list *acpi_processor_alloc_pdc(void) +static struct acpi_object_list *__cpuinit acpi_processor_alloc_pdc(void) { struct acpi_object_list *obj_list; union acpi_object *obj; @@ -278,7 +284,7 @@ static struct acpi_object_list *acpi_processor_alloc_pdc(void) * _PDC is required for a BIOS-OS handshake for most of the newer * ACPI processor features. */ -static int +static int __cpuinit acpi_processor_eval_pdc(acpi_handle handle, struct acpi_object_list *pdc_in) { acpi_status status = AE_OK; @@ -306,7 +312,7 @@ acpi_processor_eval_pdc(acpi_handle handle, struct acpi_object_list *pdc_in) return status; } -void acpi_processor_set_pdc(acpi_handle handle) +void __cpuinit acpi_processor_set_pdc(acpi_handle handle) { struct acpi_object_list *obj_list; @@ -323,9 +329,8 @@ void acpi_processor_set_pdc(acpi_handle handle) kfree(obj_list->pointer); kfree(obj_list); } -EXPORT_SYMBOL_GPL(acpi_processor_set_pdc); -static acpi_status +static acpi_status __init early_init_pdc(acpi_handle handle, u32 lvl, void *context, void **rv) { if (processor_physically_present(handle) == false) diff --git a/drivers/acpi/processor_driver.c b/drivers/acpi/processor_driver.c index 360a74e..a4e0f1b 100644 --- a/drivers/acpi/processor_driver.c +++ b/drivers/acpi/processor_driver.c @@ -635,8 +635,8 @@ int acpi_processor_device_add(acpi_handle handle, struct acpi_device **device) return 0; } -static void __ref acpi_processor_hotplug_notify(acpi_handle handle, - u32 event, void *data) +static void acpi_processor_hotplug_notify(acpi_handle handle, + u32 event, void *data) { struct acpi_processor *pr; struct acpi_device *device = NULL; diff --git a/drivers/acpi/processor_throttling.c b/drivers/acpi/processor_throttling.c index fa84e97..ad35017 100644 --- a/drivers/acpi/processor_throttling.c +++ b/drivers/acpi/processor_throttling.c @@ -1164,7 +1164,7 @@ int acpi_processor_set_throttling(struct acpi_processor *pr, */ if (!match_pr->flags.throttling) { ACPI_DEBUG_PRINT((ACPI_DB_INFO, - "Throttling Controll is unsupported " + "Throttling Control is unsupported " "on CPU %d\n", i)); continue; } diff --git a/drivers/acpi/reboot.c b/drivers/acpi/reboot.c index 93f9114..a6c77e8b 100644 --- a/drivers/acpi/reboot.c +++ b/drivers/acpi/reboot.c @@ -15,9 +15,15 @@ void acpi_reboot(void) rr = &acpi_gbl_FADT.reset_register; - /* Is the reset register supported? */ - if (!(acpi_gbl_FADT.flags & ACPI_FADT_RESET_REGISTER) || - rr->bit_width != 8 || rr->bit_offset != 0) + /* ACPI reset register was only introduced with v2 of the FADT */ + + if (acpi_gbl_FADT.header.revision < 2) + return; + + /* Is the reset register supported? The spec says we should be + * checking the bit width and bit offset, but Windows ignores + * these fields */ + if (!(acpi_gbl_FADT.flags & ACPI_FADT_RESET_REGISTER)) return; reset_value = acpi_gbl_FADT.reset_value; @@ -45,6 +51,4 @@ void acpi_reboot(void) acpi_reset(); break; } - /* Wait ten seconds */ - acpi_os_stall(10000000); } diff --git a/drivers/acpi/scan.c b/drivers/acpi/scan.c index b99e624..449c556 100644 --- a/drivers/acpi/scan.c +++ b/drivers/acpi/scan.c @@ -797,7 +797,6 @@ static void acpi_bus_set_run_wake_flags(struct acpi_device *device) acpi_status status; acpi_event_status event_status; - device->wakeup.run_wake_count = 0; device->wakeup.flags.notifier_present = 0; /* Power button, Lid switch always enable wakeup */ @@ -944,6 +943,10 @@ static int acpi_bus_get_flags(struct acpi_device *device) if (ACPI_SUCCESS(status)) device->flags.lockable = 1; + /* Power resources cannot be power manageable. */ + if (device->device_type == ACPI_BUS_TYPE_POWER) + return 0; + /* Presence of _PS0|_PR0 indicates 'power manageable' */ status = acpi_get_handle(device->handle, "_PS0", &temp); if (ACPI_FAILURE(status)) diff --git a/drivers/acpi/sleep.c b/drivers/acpi/sleep.c index d6a8cd1..6c94960 100644 --- a/drivers/acpi/sleep.c +++ b/drivers/acpi/sleep.c @@ -16,6 +16,7 @@ #include <linux/device.h> #include <linux/suspend.h> #include <linux/reboot.h> +#include <linux/acpi.h> #include <asm/io.h> @@ -199,8 +200,6 @@ static void acpi_pm_end(void) #endif /* CONFIG_ACPI_SLEEP */ #ifdef CONFIG_SUSPEND -extern void do_suspend_lowlevel(void); - static u32 acpi_suspend_states[] = { [PM_SUSPEND_ON] = ACPI_STATE_S0, [PM_SUSPEND_STANDBY] = ACPI_STATE_S1, @@ -243,20 +242,11 @@ static int acpi_suspend_begin(suspend_state_t pm_state) static int acpi_suspend_enter(suspend_state_t pm_state) { acpi_status status = AE_OK; - unsigned long flags = 0; u32 acpi_state = acpi_target_sleep_state; + int error; ACPI_FLUSH_CPU_CACHE(); - /* Do arch specific saving of state. */ - if (acpi_state == ACPI_STATE_S3) { - int error = acpi_save_state_mem(); - - if (error) - return error; - } - - local_irq_save(flags); switch (acpi_state) { case ACPI_STATE_S1: barrier(); @@ -264,7 +254,10 @@ static int acpi_suspend_enter(suspend_state_t pm_state) break; case ACPI_STATE_S3: - do_suspend_lowlevel(); + error = acpi_suspend_lowlevel(); + if (error) + return error; + pr_info(PREFIX "Low-level resume complete\n"); break; } @@ -290,13 +283,6 @@ static int acpi_suspend_enter(suspend_state_t pm_state) /* Allow EC transactions to happen. */ acpi_ec_unblock_transactions_early(); - local_irq_restore(flags); - printk(KERN_DEBUG "Back to C!\n"); - - /* restore processor state */ - if (acpi_state == ACPI_STATE_S3) - acpi_restore_state_mem(); - suspend_nvs_restore(); return ACPI_SUCCESS(status) ? 0 : -EFAULT; @@ -472,16 +458,13 @@ static int acpi_hibernation_begin(void) static int acpi_hibernation_enter(void) { acpi_status status = AE_OK; - unsigned long flags = 0; ACPI_FLUSH_CPU_CACHE(); - local_irq_save(flags); /* This shouldn't return. If it returns, we have a problem */ status = acpi_enter_sleep_state(ACPI_STATE_S4); /* Reprogram control registers and execute _BFS */ acpi_leave_sleep_state_prep(ACPI_STATE_S4); - local_irq_restore(flags); return ACPI_SUCCESS(status) ? 0 : -EFAULT; } @@ -585,7 +568,7 @@ int acpi_suspend(u32 acpi_state) return -EINVAL; } -#ifdef CONFIG_PM_OPS +#ifdef CONFIG_PM /** * acpi_pm_device_sleep_state - return preferred power state of ACPI device * in the system sleep state given by %acpi_target_sleep_state @@ -671,7 +654,7 @@ int acpi_pm_device_sleep_state(struct device *dev, int *d_min_p) *d_min_p = d_min; return d_max; } -#endif /* CONFIG_PM_OPS */ +#endif /* CONFIG_PM */ #ifdef CONFIG_PM_SLEEP /** diff --git a/drivers/acpi/sysfs.c b/drivers/acpi/sysfs.c index 61891e7..77255f2 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) { diff --git a/drivers/acpi/video.c b/drivers/acpi/video.c index 90f8f76..ec574fc 100644 --- a/drivers/acpi/video.c +++ b/drivers/acpi/video.c @@ -782,6 +782,9 @@ static void acpi_video_device_find_cap(struct acpi_video_device *device) if (acpi_video_backlight_support()) { struct backlight_properties props; + struct pci_dev *pdev; + acpi_handle acpi_parent; + struct device *parent = NULL; int result; static int count = 0; char *name; @@ -794,9 +797,20 @@ static void acpi_video_device_find_cap(struct acpi_video_device *device) return; count++; + acpi_get_parent(device->dev->handle, &acpi_parent); + + pdev = acpi_get_pci_dev(acpi_parent); + if (pdev) { + parent = &pdev->dev; + pci_dev_put(pdev); + } + memset(&props, 0, sizeof(struct backlight_properties)); + props.type = BACKLIGHT_FIRMWARE; props.max_brightness = device->brightness->count - 3; - device->backlight = backlight_device_register(name, NULL, device, + device->backlight = backlight_device_register(name, + parent, + device, &acpi_backlight_ops, &props); kfree(name); @@ -810,11 +824,6 @@ static void acpi_video_device_find_cap(struct acpi_video_device *device) device->backlight->props.brightness = acpi_video_get_brightness(device->backlight); - result = sysfs_create_link(&device->backlight->dev.kobj, - &device->dev->dev.kobj, "device"); - if (result) - printk(KERN_ERR PREFIX "Create sysfs link\n"); - device->cooling_dev = thermal_cooling_device_register("LCD", device->dev, &video_cooling_ops); if (IS_ERR(device->cooling_dev)) { @@ -1345,7 +1354,7 @@ acpi_video_bus_get_devices(struct acpi_video_bus *video, status = acpi_video_bus_get_one_device(dev, video); if (ACPI_FAILURE(status)) { printk(KERN_WARNING PREFIX - "Cant attach device\n"); + "Can't attach device\n"); continue; } } @@ -1364,10 +1373,9 @@ static int acpi_video_bus_put_one_device(struct acpi_video_device *device) acpi_video_device_notify); if (ACPI_FAILURE(status)) { printk(KERN_WARNING PREFIX - "Cant remove video notify handler\n"); + "Can't remove video notify handler\n"); } if (device->backlight) { - sysfs_remove_link(&device->backlight->dev.kobj, "device"); backlight_device_unregister(device->backlight); device->backlight = NULL; } |