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path: root/drivers/acpi/namespace/nsaccess.c
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Diffstat (limited to 'drivers/acpi/namespace/nsaccess.c')
-rw-r--r--drivers/acpi/namespace/nsaccess.c355
1 files changed, 179 insertions, 176 deletions
diff --git a/drivers/acpi/namespace/nsaccess.c b/drivers/acpi/namespace/nsaccess.c
index ece7a9dedd5c..edfbe34600f5 100644
--- a/drivers/acpi/namespace/nsaccess.c
+++ b/drivers/acpi/namespace/nsaccess.c
@@ -41,16 +41,13 @@
* POSSIBILITY OF SUCH DAMAGES.
*/
-
#include <acpi/acpi.h>
#include <acpi/amlcode.h>
#include <acpi/acnamesp.h>
#include <acpi/acdispat.h>
-
#define _COMPONENT ACPI_NAMESPACE
- ACPI_MODULE_NAME ("nsaccess")
-
+ACPI_MODULE_NAME("nsaccess")
/*******************************************************************************
*
@@ -65,24 +62,19 @@
* MUTEX: Locks namespace for entire execution
*
******************************************************************************/
-
-acpi_status
-acpi_ns_root_initialize (
- void)
+acpi_status acpi_ns_root_initialize(void)
{
- acpi_status status;
+ acpi_status status;
const struct acpi_predefined_names *init_val = NULL;
- struct acpi_namespace_node *new_node;
- union acpi_operand_object *obj_desc;
- acpi_string val = NULL;
-
-
- ACPI_FUNCTION_TRACE ("ns_root_initialize");
+ struct acpi_namespace_node *new_node;
+ union acpi_operand_object *obj_desc;
+ acpi_string val = NULL;
+ ACPI_FUNCTION_TRACE("ns_root_initialize");
- status = acpi_ut_acquire_mutex (ACPI_MTX_NAMESPACE);
- if (ACPI_FAILURE (status)) {
- return_ACPI_STATUS (status);
+ status = acpi_ut_acquire_mutex(ACPI_MTX_NAMESPACE);
+ if (ACPI_FAILURE(status)) {
+ return_ACPI_STATUS(status);
}
/*
@@ -102,24 +94,26 @@ acpi_ns_root_initialize (
/* Enter the pre-defined names in the name table */
- ACPI_DEBUG_PRINT ((ACPI_DB_INFO,
- "Entering predefined entries into namespace\n"));
+ ACPI_DEBUG_PRINT((ACPI_DB_INFO,
+ "Entering predefined entries into namespace\n"));
for (init_val = acpi_gbl_pre_defined_names; init_val->name; init_val++) {
/* _OSI is optional for now, will be permanent later */
- if (!ACPI_STRCMP (init_val->name, "_OSI") && !acpi_gbl_create_osi_method) {
+ if (!ACPI_STRCMP(init_val->name, "_OSI")
+ && !acpi_gbl_create_osi_method) {
continue;
}
- status = acpi_ns_lookup (NULL, init_val->name, init_val->type,
- ACPI_IMODE_LOAD_PASS2, ACPI_NS_NO_UPSEARCH,
- NULL, &new_node);
+ status = acpi_ns_lookup(NULL, init_val->name, init_val->type,
+ ACPI_IMODE_LOAD_PASS2,
+ ACPI_NS_NO_UPSEARCH, NULL, &new_node);
- if (ACPI_FAILURE (status) || (!new_node)) /* Must be on same line for code converter */ {
- ACPI_DEBUG_PRINT ((ACPI_DB_ERROR,
- "Could not create predefined name %s, %s\n",
- init_val->name, acpi_format_exception (status)));
+ if (ACPI_FAILURE(status) || (!new_node)) { /* Must be on same line for code converter */
+ ACPI_DEBUG_PRINT((ACPI_DB_ERROR,
+ "Could not create predefined name %s, %s\n",
+ init_val->name,
+ acpi_format_exception(status)));
}
/*
@@ -128,11 +122,11 @@ acpi_ns_root_initialize (
* initial value, create the initial value.
*/
if (init_val->val) {
- status = acpi_os_predefined_override (init_val, &val);
- if (ACPI_FAILURE (status)) {
- ACPI_DEBUG_PRINT ((ACPI_DB_ERROR,
- "Could not override predefined %s\n",
- init_val->name));
+ status = acpi_os_predefined_override(init_val, &val);
+ if (ACPI_FAILURE(status)) {
+ ACPI_DEBUG_PRINT((ACPI_DB_ERROR,
+ "Could not override predefined %s\n",
+ init_val->name));
}
if (!val) {
@@ -143,7 +137,8 @@ acpi_ns_root_initialize (
* Entry requests an initial value, allocate a
* descriptor for it.
*/
- obj_desc = acpi_ut_create_internal_object (init_val->type);
+ obj_desc =
+ acpi_ut_create_internal_object(init_val->type);
if (!obj_desc) {
status = AE_NO_MEMORY;
goto unlock_and_exit;
@@ -156,55 +151,62 @@ acpi_ns_root_initialize (
*/
switch (init_val->type) {
case ACPI_TYPE_METHOD:
- obj_desc->method.param_count = (u8) ACPI_TO_INTEGER (val);
+ obj_desc->method.param_count =
+ (u8) ACPI_TO_INTEGER(val);
obj_desc->common.flags |= AOPOBJ_DATA_VALID;
-#if defined (_ACPI_ASL_COMPILER) || defined (_ACPI_DUMP_App)
+#if defined (ACPI_ASL_COMPILER)
- /*
- * i_aSL Compiler cheats by putting parameter count
- * in the owner_iD
- */
- new_node->owner_id = obj_desc->method.param_count;
+ /* save the parameter count for the i_aSL compiler */
+
+ new_node->value = obj_desc->method.param_count;
#else
/* Mark this as a very SPECIAL method */
- obj_desc->method.method_flags = AML_METHOD_INTERNAL_ONLY;
- obj_desc->method.implementation = acpi_ut_osi_implementation;
+ obj_desc->method.method_flags =
+ AML_METHOD_INTERNAL_ONLY;
+
+#ifndef ACPI_DUMP_APP
+ obj_desc->method.implementation =
+ acpi_ut_osi_implementation;
+#endif
#endif
break;
case ACPI_TYPE_INTEGER:
- obj_desc->integer.value = ACPI_TO_INTEGER (val);
+ obj_desc->integer.value = ACPI_TO_INTEGER(val);
break;
-
case ACPI_TYPE_STRING:
/*
* Build an object around the static string
*/
- obj_desc->string.length = (u32) ACPI_STRLEN (val);
+ obj_desc->string.length =
+ (u32) ACPI_STRLEN(val);
obj_desc->string.pointer = val;
obj_desc->common.flags |= AOPOBJ_STATIC_POINTER;
break;
-
case ACPI_TYPE_MUTEX:
obj_desc->mutex.node = new_node;
- obj_desc->mutex.sync_level = (u8) (ACPI_TO_INTEGER (val) - 1);
+ obj_desc->mutex.sync_level =
+ (u8) (ACPI_TO_INTEGER(val) - 1);
- if (ACPI_STRCMP (init_val->name, "_GL_") == 0) {
+ if (ACPI_STRCMP(init_val->name, "_GL_") == 0) {
/*
* Create a counting semaphore for the
* global lock
*/
- status = acpi_os_create_semaphore (ACPI_NO_UNIT_LIMIT,
- 1, &obj_desc->mutex.semaphore);
- if (ACPI_FAILURE (status)) {
- acpi_ut_remove_reference (obj_desc);
+ status =
+ acpi_os_create_semaphore
+ (ACPI_NO_UNIT_LIMIT, 1,
+ &obj_desc->mutex.semaphore);
+ if (ACPI_FAILURE(status)) {
+ acpi_ut_remove_reference
+ (obj_desc);
goto unlock_and_exit;
}
@@ -212,56 +214,58 @@ acpi_ns_root_initialize (
* We just created the mutex for the
* global lock, save it
*/
- acpi_gbl_global_lock_semaphore = obj_desc->mutex.semaphore;
- }
- else {
+ acpi_gbl_global_lock_semaphore =
+ obj_desc->mutex.semaphore;
+ } else {
/* Create a mutex */
- status = acpi_os_create_semaphore (1, 1,
- &obj_desc->mutex.semaphore);
- if (ACPI_FAILURE (status)) {
- acpi_ut_remove_reference (obj_desc);
+ status = acpi_os_create_semaphore(1, 1,
+ &obj_desc->
+ mutex.
+ semaphore);
+ if (ACPI_FAILURE(status)) {
+ acpi_ut_remove_reference
+ (obj_desc);
goto unlock_and_exit;
}
}
break;
-
default:
- ACPI_REPORT_ERROR (("Unsupported initial type value %X\n",
- init_val->type));
- acpi_ut_remove_reference (obj_desc);
+ ACPI_REPORT_ERROR(("Unsupported initial type value %X\n", init_val->type));
+ acpi_ut_remove_reference(obj_desc);
obj_desc = NULL;
continue;
}
/* Store pointer to value descriptor in the Node */
- status = acpi_ns_attach_object (new_node, obj_desc,
- ACPI_GET_OBJECT_TYPE (obj_desc));
+ status = acpi_ns_attach_object(new_node, obj_desc,
+ ACPI_GET_OBJECT_TYPE
+ (obj_desc));
/* Remove local reference to the object */
- acpi_ut_remove_reference (obj_desc);
+ acpi_ut_remove_reference(obj_desc);
}
}
-
-unlock_and_exit:
- (void) acpi_ut_release_mutex (ACPI_MTX_NAMESPACE);
+ unlock_and_exit:
+ (void)acpi_ut_release_mutex(ACPI_MTX_NAMESPACE);
/* Save a handle to "_GPE", it is always present */
- if (ACPI_SUCCESS (status)) {
- status = acpi_ns_get_node_by_path ("\\_GPE", NULL, ACPI_NS_NO_UPSEARCH,
- &acpi_gbl_fadt_gpe_device);
+ if (ACPI_SUCCESS(status)) {
+ status =
+ acpi_ns_get_node_by_path("\\_GPE", NULL,
+ ACPI_NS_NO_UPSEARCH,
+ &acpi_gbl_fadt_gpe_device);
}
- return_ACPI_STATUS (status);
+ return_ACPI_STATUS(status);
}
-
/*******************************************************************************
*
* FUNCTION: acpi_ns_lookup
@@ -286,62 +290,57 @@ unlock_and_exit:
******************************************************************************/
acpi_status
-acpi_ns_lookup (
- union acpi_generic_state *scope_info,
- char *pathname,
- acpi_object_type type,
- acpi_interpreter_mode interpreter_mode,
- u32 flags,
- struct acpi_walk_state *walk_state,
- struct acpi_namespace_node **return_node)
+acpi_ns_lookup(union acpi_generic_state *scope_info,
+ char *pathname,
+ acpi_object_type type,
+ acpi_interpreter_mode interpreter_mode,
+ u32 flags,
+ struct acpi_walk_state *walk_state,
+ struct acpi_namespace_node **return_node)
{
- acpi_status status;
- char *path = pathname;
- struct acpi_namespace_node *prefix_node;
- struct acpi_namespace_node *current_node = NULL;
- struct acpi_namespace_node *this_node = NULL;
- u32 num_segments;
- u32 num_carats;
- acpi_name simple_name;
- acpi_object_type type_to_check_for;
- acpi_object_type this_search_type;
- u32 search_parent_flag = ACPI_NS_SEARCH_PARENT;
- u32 local_flags = flags & ~(ACPI_NS_ERROR_IF_FOUND |
- ACPI_NS_SEARCH_PARENT);
-
-
- ACPI_FUNCTION_TRACE ("ns_lookup");
-
+ acpi_status status;
+ char *path = pathname;
+ struct acpi_namespace_node *prefix_node;
+ struct acpi_namespace_node *current_node = NULL;
+ struct acpi_namespace_node *this_node = NULL;
+ u32 num_segments;
+ u32 num_carats;
+ acpi_name simple_name;
+ acpi_object_type type_to_check_for;
+ acpi_object_type this_search_type;
+ u32 search_parent_flag = ACPI_NS_SEARCH_PARENT;
+ u32 local_flags = flags & ~(ACPI_NS_ERROR_IF_FOUND |
+ ACPI_NS_SEARCH_PARENT);
+
+ ACPI_FUNCTION_TRACE("ns_lookup");
if (!return_node) {
- return_ACPI_STATUS (AE_BAD_PARAMETER);
+ return_ACPI_STATUS(AE_BAD_PARAMETER);
}
acpi_gbl_ns_lookup_count++;
*return_node = ACPI_ENTRY_NOT_FOUND;
if (!acpi_gbl_root_node) {
- return_ACPI_STATUS (AE_NO_NAMESPACE);
+ return_ACPI_STATUS(AE_NO_NAMESPACE);
}
/*
* Get the prefix scope.
* A null scope means use the root scope
*/
- if ((!scope_info) ||
- (!scope_info->scope.node)) {
- ACPI_DEBUG_PRINT ((ACPI_DB_NAMES,
- "Null scope prefix, using root node (%p)\n",
- acpi_gbl_root_node));
+ if ((!scope_info) || (!scope_info->scope.node)) {
+ ACPI_DEBUG_PRINT((ACPI_DB_NAMES,
+ "Null scope prefix, using root node (%p)\n",
+ acpi_gbl_root_node));
prefix_node = acpi_gbl_root_node;
- }
- else {
+ } else {
prefix_node = scope_info->scope.node;
- if (ACPI_GET_DESCRIPTOR_TYPE (prefix_node) != ACPI_DESC_TYPE_NAMED) {
- ACPI_REPORT_ERROR (("ns_lookup: %p is not a namespace node [%s]\n",
- prefix_node, acpi_ut_get_descriptor_name (prefix_node)));
- return_ACPI_STATUS (AE_AML_INTERNAL);
+ if (ACPI_GET_DESCRIPTOR_TYPE(prefix_node) !=
+ ACPI_DESC_TYPE_NAMED) {
+ ACPI_REPORT_ERROR(("ns_lookup: %p is not a namespace node [%s]\n", prefix_node, acpi_ut_get_descriptor_name(prefix_node)));
+ return_ACPI_STATUS(AE_AML_INTERNAL);
}
/*
@@ -349,9 +348,9 @@ acpi_ns_lookup (
* Device/Method, etc.) It could be a Package or other object node.
* Backup up the tree to find the containing scope node.
*/
- while (!acpi_ns_opens_scope (prefix_node->type) &&
- prefix_node->type != ACPI_TYPE_ANY) {
- prefix_node = acpi_ns_get_parent_node (prefix_node);
+ while (!acpi_ns_opens_scope(prefix_node->type) &&
+ prefix_node->type != ACPI_TYPE_ANY) {
+ prefix_node = acpi_ns_get_parent_node(prefix_node);
}
}
@@ -366,13 +365,13 @@ acpi_ns_lookup (
/* A Null name_path is allowed and refers to the root */
num_segments = 0;
- this_node = acpi_gbl_root_node;
- path = "";
+ this_node = acpi_gbl_root_node;
+ path = "";
- ACPI_DEBUG_PRINT ((ACPI_DB_NAMES,
- "Null Pathname (Zero segments), Flags=%X\n", flags));
- }
- else {
+ ACPI_DEBUG_PRINT((ACPI_DB_NAMES,
+ "Null Pathname (Zero segments), Flags=%X\n",
+ flags));
+ } else {
/*
* Name pointer is valid (and must be in internal name format)
*
@@ -396,15 +395,16 @@ acpi_ns_lookup (
path++;
- ACPI_DEBUG_PRINT ((ACPI_DB_NAMES,
- "Path is absolute from root [%p]\n", this_node));
- }
- else {
+ ACPI_DEBUG_PRINT((ACPI_DB_NAMES,
+ "Path is absolute from root [%p]\n",
+ this_node));
+ } else {
/* Pathname is relative to current scope, start there */
- ACPI_DEBUG_PRINT ((ACPI_DB_NAMES,
- "Searching relative to prefix scope [%4.4s] (%p)\n",
- acpi_ut_get_node_name (prefix_node), prefix_node));
+ ACPI_DEBUG_PRINT((ACPI_DB_NAMES,
+ "Searching relative to prefix scope [%4.4s] (%p)\n",
+ acpi_ut_get_node_name(prefix_node),
+ prefix_node));
/*
* Handle multiple Parent Prefixes (carat) by just getting
@@ -425,20 +425,20 @@ acpi_ns_lookup (
/* Backup to the parent node */
num_carats++;
- this_node = acpi_ns_get_parent_node (this_node);
+ this_node = acpi_ns_get_parent_node(this_node);
if (!this_node) {
/* Current scope has no parent scope */
- ACPI_REPORT_ERROR (
- ("ACPI path has too many parent prefixes (^) - reached beyond root node\n"));
- return_ACPI_STATUS (AE_NOT_FOUND);
+ ACPI_REPORT_ERROR(("ACPI path has too many parent prefixes (^) - reached beyond root node\n"));
+ return_ACPI_STATUS(AE_NOT_FOUND);
}
}
if (search_parent_flag == ACPI_NS_NO_UPSEARCH) {
- ACPI_DEBUG_PRINT ((ACPI_DB_NAMES,
- "Search scope is [%4.4s], path has %d carat(s)\n",
- acpi_ut_get_node_name (this_node), num_carats));
+ ACPI_DEBUG_PRINT((ACPI_DB_NAMES,
+ "Search scope is [%4.4s], path has %d carat(s)\n",
+ acpi_ut_get_node_name
+ (this_node), num_carats));
}
}
@@ -464,9 +464,9 @@ acpi_ns_lookup (
num_segments = 0;
type = this_node->type;
- ACPI_DEBUG_PRINT ((ACPI_DB_NAMES,
- "Prefix-only Pathname (Zero name segments), Flags=%X\n",
- flags));
+ ACPI_DEBUG_PRINT((ACPI_DB_NAMES,
+ "Prefix-only Pathname (Zero name segments), Flags=%X\n",
+ flags));
break;
case AML_DUAL_NAME_PREFIX:
@@ -480,8 +480,9 @@ acpi_ns_lookup (
num_segments = 2;
path++;
- ACPI_DEBUG_PRINT ((ACPI_DB_NAMES,
- "Dual Pathname (2 segments, Flags=%X)\n", flags));
+ ACPI_DEBUG_PRINT((ACPI_DB_NAMES,
+ "Dual Pathname (2 segments, Flags=%X)\n",
+ flags));
break;
case AML_MULTI_NAME_PREFIX_OP:
@@ -493,12 +494,12 @@ acpi_ns_lookup (
/* Extract segment count, point to first name segment */
path++;
- num_segments = (u32) (u8) *path;
+ num_segments = (u32) (u8) * path;
path++;
- ACPI_DEBUG_PRINT ((ACPI_DB_NAMES,
- "Multi Pathname (%d Segments, Flags=%X) \n",
- num_segments, flags));
+ ACPI_DEBUG_PRINT((ACPI_DB_NAMES,
+ "Multi Pathname (%d Segments, Flags=%X) \n",
+ num_segments, flags));
break;
default:
@@ -508,15 +509,15 @@ acpi_ns_lookup (
*/
num_segments = 1;
- ACPI_DEBUG_PRINT ((ACPI_DB_NAMES,
- "Simple Pathname (1 segment, Flags=%X)\n", flags));
+ ACPI_DEBUG_PRINT((ACPI_DB_NAMES,
+ "Simple Pathname (1 segment, Flags=%X)\n",
+ flags));
break;
}
- ACPI_DEBUG_EXEC (acpi_ns_print_pathname (num_segments, path));
+ ACPI_DEBUG_EXEC(acpi_ns_print_pathname(num_segments, path));
}
-
/*
* Search namespace for each segment of the name. Loop through and
* verify (or add to the namespace) each name segment.
@@ -540,7 +541,7 @@ acpi_ns_lookup (
* requested it AND we have a single, non-fully-qualified name_seg
*/
if ((search_parent_flag != ACPI_NS_NO_UPSEARCH) &&
- (flags & ACPI_NS_SEARCH_PARENT)) {
+ (flags & ACPI_NS_SEARCH_PARENT)) {
local_flags |= ACPI_NS_SEARCH_PARENT;
}
@@ -553,24 +554,28 @@ acpi_ns_lookup (
/* Extract one ACPI name from the front of the pathname */
- ACPI_MOVE_32_TO_32 (&simple_name, path);
+ ACPI_MOVE_32_TO_32(&simple_name, path);
/* Try to find the single (4 character) ACPI name */
- status = acpi_ns_search_and_enter (simple_name, walk_state, current_node,
- interpreter_mode, this_search_type, local_flags, &this_node);
- if (ACPI_FAILURE (status)) {
+ status =
+ acpi_ns_search_and_enter(simple_name, walk_state,
+ current_node, interpreter_mode,
+ this_search_type, local_flags,
+ &this_node);
+ if (ACPI_FAILURE(status)) {
if (status == AE_NOT_FOUND) {
/* Name not found in ACPI namespace */
- ACPI_DEBUG_PRINT ((ACPI_DB_NAMES,
- "Name [%4.4s] not found in scope [%4.4s] %p\n",
- (char *) &simple_name, (char *) &current_node->name,
- current_node));
+ ACPI_DEBUG_PRINT((ACPI_DB_NAMES,
+ "Name [%4.4s] not found in scope [%4.4s] %p\n",
+ (char *)&simple_name,
+ (char *)&current_node->name,
+ current_node));
}
*return_node = this_node;
- return_ACPI_STATUS (status);
+ return_ACPI_STATUS(status);
}
/*
@@ -586,19 +591,16 @@ acpi_ns_lookup (
*
* Then we have a type mismatch. Just warn and ignore it.
*/
- if ((num_segments == 0) &&
- (type_to_check_for != ACPI_TYPE_ANY) &&
- (type_to_check_for != ACPI_TYPE_LOCAL_ALIAS) &&
- (type_to_check_for != ACPI_TYPE_LOCAL_METHOD_ALIAS) &&
- (type_to_check_for != ACPI_TYPE_LOCAL_SCOPE) &&
- (this_node->type != ACPI_TYPE_ANY) &&
- (this_node->type != type_to_check_for)) {
+ if ((num_segments == 0) &&
+ (type_to_check_for != ACPI_TYPE_ANY) &&
+ (type_to_check_for != ACPI_TYPE_LOCAL_ALIAS) &&
+ (type_to_check_for != ACPI_TYPE_LOCAL_METHOD_ALIAS) &&
+ (type_to_check_for != ACPI_TYPE_LOCAL_SCOPE) &&
+ (this_node->type != ACPI_TYPE_ANY) &&
+ (this_node->type != type_to_check_for)) {
/* Complain about a type mismatch */
- ACPI_REPORT_WARNING (
- ("ns_lookup: Type mismatch on %4.4s (%s), searching for (%s)\n",
- (char *) &simple_name, acpi_ut_get_type_name (this_node->type),
- acpi_ut_get_type_name (type_to_check_for)));
+ ACPI_REPORT_WARNING(("ns_lookup: Type mismatch on %4.4s (%s), searching for (%s)\n", (char *)&simple_name, acpi_ut_get_type_name(this_node->type), acpi_ut_get_type_name(type_to_check_for)));
}
/*
@@ -624,15 +626,16 @@ acpi_ns_lookup (
* If entry is a type which opens a scope, push the new scope on the
* scope stack.
*/
- if (acpi_ns_opens_scope (type)) {
- status = acpi_ds_scope_stack_push (this_node, type, walk_state);
- if (ACPI_FAILURE (status)) {
- return_ACPI_STATUS (status);
+ if (acpi_ns_opens_scope(type)) {
+ status =
+ acpi_ds_scope_stack_push(this_node, type,
+ walk_state);
+ if (ACPI_FAILURE(status)) {
+ return_ACPI_STATUS(status);
}
}
}
*return_node = this_node;
- return_ACPI_STATUS (AE_OK);
+ return_ACPI_STATUS(AE_OK);
}
-
Copyright © 1996 – 2023 Jason A. Donenfeld. All Rights Reverse Engineered.