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path: root/drivers/acpi/namespace
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Diffstat (limited to 'drivers/acpi/namespace')
-rw-r--r--drivers/acpi/namespace/nsaccess.c46
-rw-r--r--drivers/acpi/namespace/nsalloc.c118
-rw-r--r--drivers/acpi/namespace/nsdump.c15
-rw-r--r--drivers/acpi/namespace/nsdumpdv.c6
-rw-r--r--drivers/acpi/namespace/nseval.c484
-rw-r--r--drivers/acpi/namespace/nsinit.c298
-rw-r--r--drivers/acpi/namespace/nsload.c27
-rw-r--r--drivers/acpi/namespace/nsnames.c14
-rw-r--r--drivers/acpi/namespace/nsobject.c15
-rw-r--r--drivers/acpi/namespace/nsparse.c6
-rw-r--r--drivers/acpi/namespace/nssearch.c148
-rw-r--r--drivers/acpi/namespace/nsutils.c104
-rw-r--r--drivers/acpi/namespace/nswalk.c6
-rw-r--r--drivers/acpi/namespace/nsxfeval.c203
-rw-r--r--drivers/acpi/namespace/nsxfname.c22
-rw-r--r--drivers/acpi/namespace/nsxfobj.c11
16 files changed, 691 insertions, 832 deletions
diff --git a/drivers/acpi/namespace/nsaccess.c b/drivers/acpi/namespace/nsaccess.c
index 1149bc18fb3..48fadade52e 100644
--- a/drivers/acpi/namespace/nsaccess.c
+++ b/drivers/acpi/namespace/nsaccess.c
@@ -70,7 +70,7 @@ acpi_status acpi_ns_root_initialize(void)
union acpi_operand_object *obj_desc;
acpi_string val = NULL;
- ACPI_FUNCTION_TRACE("ns_root_initialize");
+ ACPI_FUNCTION_TRACE(ns_root_initialize);
status = acpi_ut_acquire_mutex(ACPI_MTX_NAMESPACE);
if (ACPI_FAILURE(status)) {
@@ -98,6 +98,7 @@ acpi_status acpi_ns_root_initialize(void)
"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")
@@ -156,7 +157,7 @@ acpi_status acpi_ns_root_initialize(void)
#if defined (ACPI_ASL_COMPILER)
- /* save the parameter count for the i_aSL compiler */
+ /* Save the parameter count for the i_aSL compiler */
new_node->value = obj_desc->method.param_count;
#else
@@ -258,10 +259,8 @@ acpi_status acpi_ns_root_initialize(void)
/* 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);
+ status = acpi_ns_get_node(NULL, "\\_GPE", ACPI_NS_NO_UPSEARCH,
+ &acpi_gbl_fadt_gpe_device);
}
return_ACPI_STATUS(status);
@@ -310,17 +309,17 @@ acpi_ns_lookup(union acpi_generic_state *scope_info,
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);
+ u32 local_flags;
- ACPI_FUNCTION_TRACE("ns_lookup");
+ ACPI_FUNCTION_TRACE(ns_lookup);
if (!return_node) {
return_ACPI_STATUS(AE_BAD_PARAMETER);
}
- acpi_gbl_ns_lookup_count++;
+ local_flags = flags & ~(ACPI_NS_ERROR_IF_FOUND | ACPI_NS_SEARCH_PARENT);
*return_node = ACPI_ENTRY_NOT_FOUND;
+ acpi_gbl_ns_lookup_count++;
if (!acpi_gbl_root_node) {
return_ACPI_STATUS(AE_NO_NAMESPACE);
@@ -346,14 +345,17 @@ acpi_ns_lookup(union acpi_generic_state *scope_info,
return_ACPI_STATUS(AE_AML_INTERNAL);
}
- /*
- * This node might not be a actual "scope" node (such as a
- * 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);
+ if (!(flags & ACPI_NS_PREFIX_IS_SCOPE)) {
+ /*
+ * This node might not be a actual "scope" node (such as a
+ * 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);
+ }
}
}
@@ -365,6 +367,7 @@ acpi_ns_lookup(union acpi_generic_state *scope_info,
* Begin examination of the actual pathname
*/
if (!pathname) {
+
/* A Null name_path is allowed and refers to the root */
num_segments = 0;
@@ -389,6 +392,7 @@ acpi_ns_lookup(union acpi_generic_state *scope_info,
* to the current scope).
*/
if (*path == (u8) AML_ROOT_PREFIX) {
+
/* Pathname is fully qualified, start from the root */
this_node = acpi_gbl_root_node;
@@ -416,6 +420,7 @@ acpi_ns_lookup(union acpi_generic_state *scope_info,
this_node = prefix_node;
num_carats = 0;
while (*path == (u8) AML_PARENT_PREFIX) {
+
/* Name is fully qualified, no search rules apply */
search_parent_flag = ACPI_NS_NO_UPSEARCH;
@@ -430,6 +435,7 @@ acpi_ns_lookup(union acpi_generic_state *scope_info,
num_carats++;
this_node = acpi_ns_get_parent_node(this_node);
if (!this_node) {
+
/* Current scope has no parent scope */
ACPI_ERROR((AE_INFO,
@@ -569,6 +575,7 @@ acpi_ns_lookup(union acpi_generic_state *scope_info,
&this_node);
if (ACPI_FAILURE(status)) {
if (status == AE_NOT_FOUND) {
+
/* Name not found in ACPI namespace */
ACPI_DEBUG_PRINT((ACPI_DB_NAMES,
@@ -602,10 +609,11 @@ acpi_ns_lookup(union acpi_generic_state *scope_info,
(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_WARNING((AE_INFO,
- "ns_lookup: Type mismatch on %4.4s (%s), searching for (%s)",
+ "NsLookup: Type mismatch on %4.4s (%s), searching for (%s)",
ACPI_CAST_PTR(char, &simple_name),
acpi_ut_get_type_name(this_node->type),
acpi_ut_get_type_name
diff --git a/drivers/acpi/namespace/nsalloc.c b/drivers/acpi/namespace/nsalloc.c
index 9b871f38b61..dc3f0739a46 100644
--- a/drivers/acpi/namespace/nsalloc.c
+++ b/drivers/acpi/namespace/nsalloc.c
@@ -47,9 +47,6 @@
#define _COMPONENT ACPI_NAMESPACE
ACPI_MODULE_NAME("nsalloc")
-/* Local prototypes */
-static void acpi_ns_remove_reference(struct acpi_namespace_node *node);
-
/*******************************************************************************
*
* FUNCTION: acpi_ns_create_node
@@ -61,14 +58,13 @@ static void acpi_ns_remove_reference(struct acpi_namespace_node *node);
* DESCRIPTION: Create a namespace node
*
******************************************************************************/
-
struct acpi_namespace_node *acpi_ns_create_node(u32 name)
{
struct acpi_namespace_node *node;
- ACPI_FUNCTION_TRACE("ns_create_node");
+ ACPI_FUNCTION_TRACE(ns_create_node);
- node = ACPI_MEM_CALLOCATE(sizeof(struct acpi_namespace_node));
+ node = acpi_os_acquire_object(acpi_gbl_namespace_cache);
if (!node) {
return_PTR(NULL);
}
@@ -76,9 +72,7 @@ struct acpi_namespace_node *acpi_ns_create_node(u32 name)
ACPI_MEM_TRACKING(acpi_gbl_ns_node_list->total_allocated++);
node->name.integer = name;
- node->reference_count = 1;
ACPI_SET_DESCRIPTOR_TYPE(node, ACPI_DESC_TYPE_NAMED);
-
return_PTR(node);
}
@@ -100,7 +94,7 @@ void acpi_ns_delete_node(struct acpi_namespace_node *node)
struct acpi_namespace_node *prev_node;
struct acpi_namespace_node *next_node;
- ACPI_FUNCTION_TRACE_PTR("ns_delete_node", node);
+ ACPI_FUNCTION_TRACE_PTR(ns_delete_node, node);
parent_node = acpi_ns_get_parent_node(node);
@@ -115,6 +109,7 @@ void acpi_ns_delete_node(struct acpi_namespace_node *node)
}
if (prev_node) {
+
/* Node is not first child, unlink it */
prev_node->peer = next_node->peer;
@@ -125,6 +120,7 @@ void acpi_ns_delete_node(struct acpi_namespace_node *node)
/* Node is first child (has no previous peer) */
if (next_node->flags & ANOBJ_END_OF_PEER_LIST) {
+
/* No peers at all */
parent_node->child = NULL;
@@ -137,10 +133,10 @@ void acpi_ns_delete_node(struct acpi_namespace_node *node)
ACPI_MEM_TRACKING(acpi_gbl_ns_node_list->total_freed++);
/*
- * Detach an object if there is one then delete the node
+ * Detach an object if there is one, then delete the node
*/
acpi_ns_detach_object(node);
- ACPI_MEM_FREE(node);
+ (void)acpi_os_release_object(acpi_gbl_namespace_cache, node);
return_VOID;
}
@@ -171,7 +167,7 @@ void acpi_ns_install_node(struct acpi_walk_state *walk_state, struct acpi_namesp
acpi_owner_id owner_id = 0;
struct acpi_namespace_node *child_node;
- ACPI_FUNCTION_TRACE("ns_install_node");
+ ACPI_FUNCTION_TRACE(ns_install_node);
/*
* Get the owner ID from the Walk state
@@ -216,14 +212,6 @@ void acpi_ns_install_node(struct acpi_walk_state *walk_state, struct acpi_namesp
acpi_ut_get_type_name(parent_node->type),
parent_node));
- /*
- * Increment the reference count(s) of all parents up to
- * the root!
- */
- while ((node = acpi_ns_get_parent_node(node)) != NULL) {
- node->reference_count++;
- }
-
return_VOID;
}
@@ -244,10 +232,9 @@ void acpi_ns_delete_children(struct acpi_namespace_node *parent_node)
{
struct acpi_namespace_node *child_node;
struct acpi_namespace_node *next_node;
- struct acpi_namespace_node *node;
u8 flags;
- ACPI_FUNCTION_TRACE_PTR("ns_delete_children", parent_node);
+ ACPI_FUNCTION_TRACE_PTR(ns_delete_children, parent_node);
if (!parent_node) {
return_VOID;
@@ -264,6 +251,7 @@ void acpi_ns_delete_children(struct acpi_namespace_node *parent_node)
* Deallocate all children at this level
*/
do {
+
/* Get the things we need */
next_node = child_node->peer;
@@ -289,26 +277,10 @@ void acpi_ns_delete_children(struct acpi_namespace_node *parent_node)
*/
acpi_ns_detach_object(child_node);
- /*
- * Decrement the reference count(s) of all parents up to
- * the root! (counts were incremented when the node was created)
- */
- node = child_node;
- while ((node = acpi_ns_get_parent_node(node)) != NULL) {
- node->reference_count--;
- }
-
- /* There should be only one reference remaining on this node */
-
- if (child_node->reference_count != 1) {
- ACPI_WARNING((AE_INFO,
- "Existing references (%d) on node being deleted (%p)",
- child_node->reference_count, child_node));
- }
-
/* Now we can delete the node */
- ACPI_MEM_FREE(child_node);
+ (void)acpi_os_release_object(acpi_gbl_namespace_cache,
+ child_node);
/* And move on to the next child in the list */
@@ -341,7 +313,7 @@ void acpi_ns_delete_namespace_subtree(struct acpi_namespace_node *parent_node)
struct acpi_namespace_node *child_node = NULL;
u32 level = 1;
- ACPI_FUNCTION_TRACE("ns_delete_namespace_subtree");
+ ACPI_FUNCTION_TRACE(ns_delete_namespace_subtree);
if (!parent_node) {
return_VOID;
@@ -352,11 +324,14 @@ void acpi_ns_delete_namespace_subtree(struct acpi_namespace_node *parent_node)
* to where we started.
*/
while (level > 0) {
+
/* Get the next node in this scope (NULL if none) */
- child_node = acpi_ns_get_next_node(ACPI_TYPE_ANY, parent_node,
- child_node);
+ child_node =
+ acpi_ns_get_next_node(ACPI_TYPE_ANY, parent_node,
+ child_node);
if (child_node) {
+
/* Found a child node - detach any attached object */
acpi_ns_detach_object(child_node);
@@ -401,55 +376,6 @@ void acpi_ns_delete_namespace_subtree(struct acpi_namespace_node *parent_node)
/*******************************************************************************
*
- * FUNCTION: acpi_ns_remove_reference
- *
- * PARAMETERS: Node - Named node whose reference count is to be
- * decremented
- *
- * RETURN: None.
- *
- * DESCRIPTION: Remove a Node reference. Decrements the reference count
- * of all parent Nodes up to the root. Any node along
- * the way that reaches zero references is freed.
- *
- ******************************************************************************/
-
-static void acpi_ns_remove_reference(struct acpi_namespace_node *node)
-{
- struct acpi_namespace_node *parent_node;
- struct acpi_namespace_node *this_node;
-
- ACPI_FUNCTION_ENTRY();
-
- /*
- * Decrement the reference count(s) of this node and all
- * nodes up to the root, Delete anything with zero remaining references.
- */
- this_node = node;
- while (this_node) {
- /* Prepare to move up to parent */
-
- parent_node = acpi_ns_get_parent_node(this_node);
-
- /* Decrement the reference count on this node */
-
- this_node->reference_count--;
-
- /* Delete the node if no more references */
-
- if (!this_node->reference_count) {
- /* Delete all children and delete the node */
-
- acpi_ns_delete_children(this_node);
- acpi_ns_delete_node(this_node);
- }
-
- this_node = parent_node;
- }
-}
-
-/*******************************************************************************
- *
* FUNCTION: acpi_ns_delete_namespace_by_owner
*
* PARAMETERS: owner_id - All nodes with this owner will be deleted
@@ -469,15 +395,15 @@ void acpi_ns_delete_namespace_by_owner(acpi_owner_id owner_id)
u32 level;
struct acpi_namespace_node *parent_node;
- ACPI_FUNCTION_TRACE_U32("ns_delete_namespace_by_owner", owner_id);
+ ACPI_FUNCTION_TRACE_U32(ns_delete_namespace_by_owner, owner_id);
if (owner_id == 0) {
return_VOID;
}
+ deletion_node = NULL;
parent_node = acpi_gbl_root_node;
child_node = NULL;
- deletion_node = NULL;
level = 1;
/*
@@ -494,12 +420,14 @@ void acpi_ns_delete_namespace_by_owner(acpi_owner_id owner_id)
child_node);
if (deletion_node) {
- acpi_ns_remove_reference(deletion_node);
+ acpi_ns_delete_children(deletion_node);
+ acpi_ns_delete_node(deletion_node);
deletion_node = NULL;
}
if (child_node) {
if (child_node->owner_id == owner_id) {
+
/* Found a matching child node - detach any attached object */
acpi_ns_detach_object(child_node);
diff --git a/drivers/acpi/namespace/nsdump.c b/drivers/acpi/namespace/nsdump.c
index a2807317a84..d72df66aa96 100644
--- a/drivers/acpi/namespace/nsdump.c
+++ b/drivers/acpi/namespace/nsdump.c
@@ -75,7 +75,7 @@ void acpi_ns_print_pathname(u32 num_segments, char *pathname)
{
acpi_native_uint i;
- ACPI_FUNCTION_NAME("ns_print_pathname");
+ ACPI_FUNCTION_NAME(ns_print_pathname);
if (!(acpi_dbg_level & ACPI_LV_NAMES)
|| !(acpi_dbg_layer & ACPI_NAMESPACE)) {
@@ -123,7 +123,7 @@ void
acpi_ns_dump_pathname(acpi_handle handle, char *msg, u32 level, u32 component)
{
- ACPI_FUNCTION_TRACE("ns_dump_pathname");
+ ACPI_FUNCTION_TRACE(ns_dump_pathname);
/* Do this only if the requested debug level and component are enabled */
@@ -167,7 +167,7 @@ acpi_ns_dump_one_object(acpi_handle obj_handle,
u32 dbg_level;
u32 i;
- ACPI_FUNCTION_NAME("ns_dump_one_object");
+ ACPI_FUNCTION_NAME(ns_dump_one_object);
/* Is output enabled? */
@@ -191,6 +191,7 @@ acpi_ns_dump_one_object(acpi_handle obj_handle,
}
if (!(info->display_type & ACPI_DISPLAY_SHORT)) {
+
/* Indent the object according to the level */
acpi_os_printf("%2d%*s", (u32) level - 1, (int)level * 2, " ");
@@ -203,6 +204,9 @@ acpi_ns_dump_one_object(acpi_handle obj_handle,
}
if (!acpi_ut_valid_acpi_name(this_node->name.integer)) {
+ this_node->name.integer =
+ acpi_ut_repair_name(this_node->name.integer);
+
ACPI_WARNING((AE_INFO, "Invalid ACPI Name %08X",
this_node->name.integer));
}
@@ -226,6 +230,7 @@ acpi_ns_dump_one_object(acpi_handle obj_handle,
case ACPI_DISPLAY_SUMMARY:
if (!obj_desc) {
+
/* No attached object, we are done */
acpi_os_printf("\n");
@@ -419,6 +424,7 @@ acpi_ns_dump_one_object(acpi_handle obj_handle,
acpi_os_printf("O:%p", obj_desc);
if (!obj_desc) {
+
/* No attached object, we are done */
acpi_os_printf("\n");
@@ -669,7 +675,7 @@ void acpi_ns_dump_tables(acpi_handle search_base, u32 max_depth)
{
acpi_handle search_handle = search_base;
- ACPI_FUNCTION_TRACE("ns_dump_tables");
+ ACPI_FUNCTION_TRACE(ns_dump_tables);
if (!acpi_gbl_root_node) {
/*
@@ -682,6 +688,7 @@ void acpi_ns_dump_tables(acpi_handle search_base, u32 max_depth)
}
if (ACPI_NS_ALL == search_base) {
+
/* Entire namespace */
search_handle = acpi_gbl_root_node;
diff --git a/drivers/acpi/namespace/nsdumpdv.c b/drivers/acpi/namespace/nsdumpdv.c
index aff899a935e..c6bf5d30fca 100644
--- a/drivers/acpi/namespace/nsdumpdv.c
+++ b/drivers/acpi/namespace/nsdumpdv.c
@@ -74,7 +74,7 @@ acpi_ns_dump_one_device(acpi_handle obj_handle,
acpi_status status;
u32 i;
- ACPI_FUNCTION_NAME("ns_dump_one_device");
+ ACPI_FUNCTION_NAME(ns_dump_one_device);
status =
acpi_ns_dump_one_object(obj_handle, level, context, return_value);
@@ -92,7 +92,7 @@ acpi_ns_dump_one_device(acpi_handle obj_handle,
info->hardware_id.value,
ACPI_FORMAT_UINT64(info->address),
info->current_status));
- ACPI_MEM_FREE(info);
+ ACPI_FREE(info);
}
return (status);
@@ -115,7 +115,7 @@ void acpi_ns_dump_root_devices(void)
acpi_handle sys_bus_handle;
acpi_status status;
- ACPI_FUNCTION_NAME("ns_dump_root_devices");
+ ACPI_FUNCTION_NAME(ns_dump_root_devices);
/* Only dump the table if tracing is enabled */
diff --git a/drivers/acpi/namespace/nseval.c b/drivers/acpi/namespace/nseval.c
index 19d7b94d40c..4b0a4a8c984 100644
--- a/drivers/acpi/namespace/nseval.c
+++ b/drivers/acpi/namespace/nseval.c
@@ -1,7 +1,6 @@
/*******************************************************************************
*
- * Module Name: nseval - Object evaluation interfaces -- includes control
- * method lookup and execution.
+ * Module Name: nseval - Object evaluation, includes control method execution
*
******************************************************************************/
@@ -50,196 +49,14 @@
#define _COMPONENT ACPI_NAMESPACE
ACPI_MODULE_NAME("nseval")
-/* Local prototypes */
-static acpi_status
-acpi_ns_execute_control_method(struct acpi_parameter_info *info);
-
-static acpi_status acpi_ns_get_object_value(struct acpi_parameter_info *info);
-
-/*******************************************************************************
- *
- * FUNCTION: acpi_ns_evaluate_relative
- *
- * PARAMETERS: Pathname - Name of method to execute, If NULL, the
- * handle is the object to execute
- * Info - Method info block, contains:
- * return_object - Where to put method's return value (if
- * any). If NULL, no value is returned.
- * Params - List of parameters to pass to the method,
- * terminated by NULL. Params itself may be
- * NULL if no parameters are being passed.
- *
- * RETURN: Status
- *
- * DESCRIPTION: Evaluate the object or find and execute the requested method
- *
- * MUTEX: Locks Namespace
- *
- ******************************************************************************/
-
-acpi_status
-acpi_ns_evaluate_relative(char *pathname, struct acpi_parameter_info *info)
-{
- acpi_status status;
- struct acpi_namespace_node *node = NULL;
- union acpi_generic_state *scope_info;
- char *internal_path = NULL;
-
- ACPI_FUNCTION_TRACE("ns_evaluate_relative");
-
- /*
- * Must have a valid object handle
- */
- if (!info || !info->node) {
- return_ACPI_STATUS(AE_BAD_PARAMETER);
- }
-
- /* Build an internal name string for the method */
-
- status = acpi_ns_internalize_name(pathname, &internal_path);
- if (ACPI_FAILURE(status)) {
- return_ACPI_STATUS(status);
- }
-
- scope_info = acpi_ut_create_generic_state();
- if (!scope_info) {
- goto cleanup1;
- }
-
- /* Get the prefix handle and Node */
-
- status = acpi_ut_acquire_mutex(ACPI_MTX_NAMESPACE);
- if (ACPI_FAILURE(status)) {
- goto cleanup;
- }
-
- info->node = acpi_ns_map_handle_to_node(info->node);
- if (!info->node) {
- (void)acpi_ut_release_mutex(ACPI_MTX_NAMESPACE);
- status = AE_BAD_PARAMETER;
- goto cleanup;
- }
-
- /* Lookup the name in the namespace */
-
- scope_info->scope.node = info->node;
- status = acpi_ns_lookup(scope_info, internal_path, ACPI_TYPE_ANY,
- ACPI_IMODE_EXECUTE, ACPI_NS_NO_UPSEARCH, NULL,
- &node);
-
- (void)acpi_ut_release_mutex(ACPI_MTX_NAMESPACE);
-
- if (ACPI_FAILURE(status)) {
- ACPI_DEBUG_PRINT((ACPI_DB_NAMES, "Object [%s] not found [%s]\n",
- pathname, acpi_format_exception(status)));
- goto cleanup;
- }
-
- /*
- * Now that we have a handle to the object, we can attempt to evaluate it.
- */
- ACPI_DEBUG_PRINT((ACPI_DB_NAMES, "%s [%p] Value %p\n",
- pathname, node, acpi_ns_get_attached_object(node)));
-
- info->node = node;
- status = acpi_ns_evaluate_by_handle(info);
-
- ACPI_DEBUG_PRINT((ACPI_DB_NAMES,
- "*** Completed eval of object %s ***\n", pathname));
-
- cleanup:
- acpi_ut_delete_generic_state(scope_info);
-
- cleanup1:
- ACPI_MEM_FREE(internal_path);
- return_ACPI_STATUS(status);
-}
-
/*******************************************************************************
*
- * FUNCTION: acpi_ns_evaluate_by_name
+ * FUNCTION: acpi_ns_evaluate
*
- * PARAMETERS: Pathname - Fully qualified pathname to the object
- * Info - Method info block, contains:
- * return_object - Where to put method's return value (if
- * any). If NULL, no value is returned.
- * Params - List of parameters to pass to the method,
- * terminated by NULL. Params itself may be
- * NULL if no parameters are being passed.
- *
- * RETURN: Status
- *
- * DESCRIPTION: Evaluate the object or rind and execute the requested method
- * passing the given parameters
- *
- * MUTEX: Locks Namespace
- *
- ******************************************************************************/
-
-acpi_status
-acpi_ns_evaluate_by_name(char *pathname, struct acpi_parameter_info *info)
-{
- acpi_status status;
- char *internal_path = NULL;
-
- ACPI_FUNCTION_TRACE("ns_evaluate_by_name");
-
- /* Build an internal name string for the method */
-
- status = acpi_ns_internalize_name(pathname, &internal_path);
- if (ACPI_FAILURE(status)) {
- return_ACPI_STATUS(status);
- }
-
- status = acpi_ut_acquire_mutex(ACPI_MTX_NAMESPACE);
- if (ACPI_FAILURE(status)) {
- goto cleanup;
- }
-
- /* Lookup the name in the namespace */
-
- status = acpi_ns_lookup(NULL, internal_path, ACPI_TYPE_ANY,
- ACPI_IMODE_EXECUTE, ACPI_NS_NO_UPSEARCH, NULL,
- &info->node);
-
- (void)acpi_ut_release_mutex(ACPI_MTX_NAMESPACE);
-
- if (ACPI_FAILURE(status)) {
- ACPI_DEBUG_PRINT((ACPI_DB_NAMES,
- "Object at [%s] was not found, status=%.4X\n",
- pathname, status));
- goto cleanup;
- }
-
- /*
- * Now that we have a handle to the object, we can attempt to evaluate it.
- */
- ACPI_DEBUG_PRINT((ACPI_DB_NAMES, "%s [%p] Value %p\n",
- pathname, info->node,
- acpi_ns_get_attached_object(info->node)));
-
- status = acpi_ns_evaluate_by_handle(info);
-
- ACPI_DEBUG_PRINT((ACPI_DB_NAMES,
- "*** Completed eval of object %s ***\n", pathname));
-
- cleanup:
-
- /* Cleanup */
-
- if (internal_path) {
- ACPI_MEM_FREE(internal_path);
- }
-
- return_ACPI_STATUS(status);
-}
-
-/*******************************************************************************
- *
- * FUNCTION: acpi_ns_evaluate_by_handle
- *
- * PARAMETERS: Info - Method info block, contains:
- * Node - Method/Object Node to execute
+ * PARAMETERS: Info - Evaluation info block, contains:
+ * prefix_node - Prefix or Method/Object Node to execute
+ * Pathname - Name of method to execute, If NULL, the
+ * Node is the object to execute
* Parameters - List of parameters to pass to the method,
* terminated by NULL. Params itself may be
* NULL if no parameters are being passed.
@@ -248,29 +65,21 @@ acpi_ns_evaluate_by_name(char *pathname, struct acpi_parameter_info *info)
* parameter_type - Type of Parameter list
* return_object - Where to put method's return value (if
* any). If NULL, no value is returned.
+ * Flags - ACPI_IGNORE_RETURN_VALUE to delete return
*
* RETURN: Status
*
- * DESCRIPTION: Evaluate object or execute the requested method passing the
- * given parameters
+ * DESCRIPTION: Execute a control method or return the current value of an
+ * ACPI namespace object.
*
- * MUTEX: Locks Namespace
+ * MUTEX: Locks interpreter
*
******************************************************************************/
-
-acpi_status acpi_ns_evaluate_by_handle(struct acpi_parameter_info *info)
+acpi_status acpi_ns_evaluate(struct acpi_evaluate_info *info)
{
acpi_status status;
- ACPI_FUNCTION_TRACE("ns_evaluate_by_handle");
-
- /* Check if namespace has been initialized */
-
- if (!acpi_gbl_root_node) {
- return_ACPI_STATUS(AE_NO_NAMESPACE);
- }
-
- /* Parameter Validation */
+ ACPI_FUNCTION_TRACE(ns_evaluate);
if (!info) {
return_ACPI_STATUS(AE_BAD_PARAMETER);
@@ -280,202 +89,120 @@ acpi_status acpi_ns_evaluate_by_handle(struct acpi_parameter_info *info)
info->return_object = NULL;
- /* Get the prefix handle and Node */
-
- status = acpi_ut_acquire_mutex(ACPI_MTX_NAMESPACE);
+ /*
+ * Get the actual namespace node for the target object. Handles these cases:
+ *
+ * 1) Null node, Pathname (absolute path)
+ * 2) Node, Pathname (path relative to Node)
+ * 3) Node, Null Pathname
+ */
+ status = acpi_ns_get_node(info->prefix_node, info->pathname,
+ ACPI_NS_NO_UPSEARCH, &info->resolved_node);
if (ACPI_FAILURE(status)) {
return_ACPI_STATUS(status);
}
- info->node = acpi_ns_map_handle_to_node(info->node);
- if (!info->node) {
- (void)acpi_ut_release_mutex(ACPI_MTX_NAMESPACE);
- return_ACPI_STATUS(AE_BAD_PARAMETER);
- }
-
/*
* For a method alias, we must grab the actual method node so that proper
* scoping context will be established before execution.
*/
- if (acpi_ns_get_type(info->node) == ACPI_TYPE_LOCAL_METHOD_ALIAS) {
- info->node =
+ if (acpi_ns_get_type(info->resolved_node) ==
+ ACPI_TYPE_LOCAL_METHOD_ALIAS) {
+ info->resolved_node =
ACPI_CAST_PTR(struct acpi_namespace_node,
- info->node->object);
+ info->resolved_node->object);
}
+ ACPI_DEBUG_PRINT((ACPI_DB_NAMES, "%s [%p] Value %p\n", info->pathname,
+ info->resolved_node,
+ acpi_ns_get_attached_object(info->resolved_node)));
+
/*
* Two major cases here:
- * 1) The object is an actual control method -- execute it.
- * 2) The object is not a method -- just return it's current value
*
- * In both cases, the namespace is unlocked by the acpi_ns* procedure
+ * 1) The object is a control method -- execute it
+ * 2) The object is not a method -- just return it's current value
*/
- if (acpi_ns_get_type(info->node) == ACPI_TYPE_METHOD) {
- /*
- * Case 1) We have an actual control method to execute
- */
- status = acpi_ns_execute_control_method(info);
- } else {
+ if (acpi_ns_get_type(info->resolved_node) == ACPI_TYPE_METHOD) {
/*
- * Case 2) Object is NOT a method, just return its current value
+ * 1) Object is a control method - execute it
*/
- status = acpi_ns_get_object_value(info);
- }
-
- /*
- * Check if there is a return value on the stack that must be dealt with
- */
- if (status == AE_CTRL_RETURN_VALUE) {
- /* Map AE_CTRL_RETURN_VALUE to AE_OK, we are done with it */
-
- status = AE_OK;
- }
-
- /*
- * Namespace was unlocked by the handling acpi_ns* function, so we
- * just return
- */
- return_ACPI_STATUS(status);
-}
-
-/*******************************************************************************
- *
- * FUNCTION: acpi_ns_execute_control_method
- *
- * PARAMETERS: Info - Method info block, contains:
- * Node - Method Node to execute
- * obj_desc - Method object
- * Parameters - List of parameters to pass to the method,
- * terminated by NULL. Params itself may be
- * NULL if no parameters are being passed.
- * return_object - Where to put method's return value (if
- * any). If NULL, no value is returned.
- * parameter_type - Type of Parameter list
- * return_object - Where to put method's return value (if
- * any). If NULL, no value is returned.
- *
- * RETURN: Status
- *
- * DESCRIPTION: Execute the requested method passing the given parameters
- *
- * MUTEX: Assumes namespace is locked
- *
- ******************************************************************************/
-
-static acpi_status
-acpi_ns_execute_control_method(struct acpi_parameter_info *info)
-{
- acpi_status status;
-
- ACPI_FUNCTION_TRACE("ns_execute_control_method");
-
- /* Verify that there is a method associated with this object */
-
- info->obj_desc = acpi_ns_get_attached_object(info->node);
- if (!info->obj_desc) {
- ACPI_ERROR((AE_INFO, "No attached method object"));
- (void)acpi_ut_release_mutex(ACPI_MTX_NAMESPACE);
- return_ACPI_STATUS(AE_NULL_OBJECT);
- }
-
- ACPI_DUMP_PATHNAME(info->node, "Execute Method:",
- ACPI_LV_INFO, _COMPONENT);
-
- ACPI_DEBUG_PRINT((ACPI_DB_EXEC, "Method at AML address %p Length %X\n",
- info->obj_desc->method.aml_start + 1,
- info->obj_desc->method.aml_length - 1));
-
- /*
- * Unlock the namespace before execution. This allows namespace access
- * via the external Acpi* interfaces while a method is being executed.
- * However, any namespace deletion must acquire both the namespace and
- * interpreter locks to ensure that no thread is using the portion of the
- * namespace that is being deleted.
- */
- status = acpi_ut_release_mutex(ACPI_MTX_NAMESPACE);
- if (ACPI_FAILURE(status)) {
- return_ACPI_STATUS(status);
- }
+ /* Verify that there is a method object associated with this node */
- /*
- * Execute the method via the interpreter. The interpreter is locked
- * here before calling into the AML parser
- */
- status = acpi_ex_enter_interpreter();
- if (ACPI_FAILURE(status)) {
- return_ACPI_STATUS(status);
- }
+ info->obj_desc =
+ acpi_ns_get_attached_object(info->resolved_node);
+ if (!info->obj_desc) {
+ ACPI_ERROR((AE_INFO,
+ "Control method has no attached sub-object"));
+ return_ACPI_STATUS(AE_NULL_OBJECT);
+ }
- status = acpi_ps_execute_method(info);
- acpi_ex_exit_interpreter();
+ ACPI_DUMP_PATHNAME(info->resolved_node, "Execute Method:",
+ ACPI_LV_INFO, _COMPONENT);
- return_ACPI_STATUS(status);
-}
+ ACPI_DEBUG_PRINT((ACPI_DB_EXEC,
+ "Method at AML address %p Length %X\n",
+ info->obj_desc->method.aml_start + 1,
+ info->obj_desc->method.aml_length - 1));
-/*******************************************************************************
- *
- * FUNCTION: acpi_ns_get_object_value
- *
- * PARAMETERS: Info - Method info block, contains:
- * Node - Object's NS node
- * return_object - Where to put object value (if
- * any). If NULL, no value is returned.
- *
- * RETURN: Status
- *
- * DESCRIPTION: Return the current value of the object
- *
- * MUTEX: Assumes namespace is locked, leaves namespace unlocked
- *
- ******************************************************************************/
+ /*
+ * Any namespace deletion must acquire both the namespace and
+ * interpreter locks to ensure that no thread is using the portion of
+ * the namespace that is being deleted.
+ *
+ * Execute the method via the interpreter. The interpreter is locked
+ * here before calling into the AML parser
+ */
+ status = acpi_ex_enter_interpreter();
+ if (ACPI_FAILURE(status)) {
+ return_ACPI_STATUS(status);
+ }
-static acpi_status acpi_ns_get_object_value(struct acpi_parameter_info *info)
-{
- acpi_status status = AE_OK;
- struct acpi_namespace_node *resolved_node = info->node;
+ status = acpi_ps_execute_method(info);
+ acpi_ex_exit_interpreter();
+ } else {
+ /*
+ * 2) Object is not a method, return its current value
+ */
- ACPI_FUNCTION_TRACE("ns_get_object_value");
+ /*
+ * Objects require additional resolution steps (e.g., the Node may be
+ * a field that must be read, etc.) -- we can't just grab the object
+ * out of the node.
+ *
+ * Use resolve_node_to_value() to get the associated value.
+ *
+ * NOTE: we can get away with passing in NULL for a walk state because
+ * resolved_node is guaranteed to not be a reference to either a method
+ * local or a method argument (because this interface is never called
+ * from a running method.)
+ *
+ * Even though we do not directly invoke the interpreter for object
+ * resolution, we must lock it because we could access an opregion.
+ * The opregion access code assumes that the interpreter is locked.
+ */
+ status = acpi_ex_enter_interpreter();
+ if (ACPI_FAILURE(status)) {
+ return_ACPI_STATUS(status);
+ }
- /*
- * Objects require additional resolution steps (e.g., the Node may be a
- * field that must be read, etc.) -- we can't just grab the object out of
- * the node.
- */
+ /* Function has a strange interface */
- /*
- * Use resolve_node_to_value() to get the associated value. This call always
- * deletes obj_desc (allocated above).
- *
- * NOTE: we can get away with passing in NULL for a walk state because
- * obj_desc is guaranteed to not be a reference to either a method local or
- * a method argument (because this interface can only be called from the
- * acpi_evaluate external interface, never called from a running method.)
- *
- * Even though we do not directly invoke the interpreter for this, we must
- * enter it because we could access an opregion. The opregion access code
- * assumes that the interpreter is locked.
- *
- * We must release the namespace lock before entering the intepreter.
- */
- status = acpi_ut_release_mutex(ACPI_MTX_NAMESPACE);
- if (ACPI_FAILURE(status)) {
- return_ACPI_STATUS(status);
- }
+ status =
+ acpi_ex_resolve_node_to_value(&info->resolved_node, NULL);
+ acpi_ex_exit_interpreter();
- status = acpi_ex_enter_interpreter();
- if (ACPI_SUCCESS(status)) {
- status = acpi_ex_resolve_node_to_value(&resolved_node, NULL);
/*
* If acpi_ex_resolve_node_to_value() succeeded, the return value was placed
* in resolved_node.
*/
- acpi_ex_exit_interpreter();
-
if (ACPI_SUCCESS(status)) {
status = AE_CTRL_RETURN_VALUE;
- info->return_object = ACPI_CAST_PTR
- (union acpi_operand_object, resolved_node);
+ info->return_object =
+ ACPI_CAST_PTR(union acpi_operand_object,
+ info->resolved_node);
+
ACPI_DEBUG_PRINT((ACPI_DB_NAMES,
"Returning object %p [%s]\n",
info->return_object,
@@ -484,7 +211,30 @@ static acpi_status acpi_ns_get_object_value(struct acpi_parameter_info *info)
}
}
- /* Namespace is unlocked */
+ /*
+ * Check if there is a return value that must be dealt with
+ */
+ if (status == AE_CTRL_RETURN_VALUE) {
+
+ /* If caller does not want the return value, delete it */
+ if (info->flags & ACPI_IGNORE_RETURN_VALUE) {
+ acpi_ut_remove_reference(info->return_object);
+ info->return_object = NULL;
+ }
+
+ /* Map AE_CTRL_RETURN_VALUE to AE_OK, we are done with it */
+
+ status = AE_OK;
+ }
+
+ ACPI_DEBUG_PRINT((ACPI_DB_NAMES,
+ "*** Completed evaluation of object %s ***\n",
+ info->pathname));
+
+ /*
+ * Namespace was unlocked by the handling acpi_ns* function, so we
+ * just return
+ */
return_ACPI_STATUS(status);
}
diff --git a/drivers/acpi/namespace/nsinit.c b/drivers/acpi/namespace/nsinit.c
index 9f929e479fd..aec8488c001 100644
--- a/drivers/acpi/namespace/nsinit.c
+++ b/drivers/acpi/namespace/nsinit.c
@@ -58,6 +58,10 @@ static acpi_status
acpi_ns_init_one_device(acpi_handle obj_handle,
u32 nesting_level, void *context, void **return_value);
+static acpi_status
+acpi_ns_find_ini_methods(acpi_handle obj_handle,
+ u32 nesting_level, void *context, void **return_value);
+
/*******************************************************************************
*
* FUNCTION: acpi_ns_initialize_objects
@@ -76,7 +80,7 @@ acpi_status acpi_ns_initialize_objects(void)
acpi_status status;
struct acpi_init_walk_info info;
- ACPI_FUNCTION_TRACE("ns_initialize_objects");
+ ACPI_FUNCTION_TRACE(ns_initialize_objects);
ACPI_DEBUG_PRINT((ACPI_DB_DISPATCH,
"**** Starting initialization of namespace objects ****\n"));
@@ -93,7 +97,7 @@ acpi_status acpi_ns_initialize_objects(void)
ACPI_UINT32_MAX, acpi_ns_init_one_object,
&info, NULL);
if (ACPI_FAILURE(status)) {
- ACPI_EXCEPTION((AE_INFO, status, "During walk_namespace"));
+ ACPI_EXCEPTION((AE_INFO, status, "During WalkNamespace"));
}
ACPI_DEBUG_PRINT_RAW((ACPI_DB_INIT,
@@ -133,7 +137,7 @@ acpi_status acpi_ns_initialize_devices(void)
acpi_status status;
struct acpi_device_walk_info info;
- ACPI_FUNCTION_TRACE("ns_initialize_devices");
+ ACPI_FUNCTION_TRACE(ns_initialize_devices);
/* Init counters */
@@ -142,30 +146,46 @@ acpi_status acpi_ns_initialize_devices(void)
info.num_INI = 0;
ACPI_DEBUG_PRINT_RAW((ACPI_DB_INIT,
- "Executing all Device _STA and_INI methods:"));
+ "Initializing Device/Processor/Thermal objects by executing _INI methods:"));
+
+ /* Tree analysis: find all subtrees that contain _INI methods */
- status = acpi_ut_acquire_mutex(ACPI_MTX_NAMESPACE);
+ status = acpi_ns_walk_namespace(ACPI_TYPE_ANY, ACPI_ROOT_OBJECT,
+ ACPI_UINT32_MAX, FALSE,
+ acpi_ns_find_ini_methods, &info, NULL);
if (ACPI_FAILURE(status)) {
- return_ACPI_STATUS(status);
+ goto error_exit;
}
- /* Walk namespace for all objects */
+ /* Allocate the evaluation information block */
+
+ info.evaluate_info =
+ ACPI_ALLOCATE_ZEROED(sizeof(struct acpi_evaluate_info));
+ if (!info.evaluate_info) {
+ status = AE_NO_MEMORY;
+ goto error_exit;
+ }
+
+ /* Walk namespace to execute all _INIs on present devices */
status = acpi_ns_walk_namespace(ACPI_TYPE_ANY, ACPI_ROOT_OBJECT,
- ACPI_UINT32_MAX, TRUE,
+ ACPI_UINT32_MAX, FALSE,
acpi_ns_init_one_device, &info, NULL);
- (void)acpi_ut_release_mutex(ACPI_MTX_NAMESPACE);
-
+ ACPI_FREE(info.evaluate_info);
if (ACPI_FAILURE(status)) {
- ACPI_EXCEPTION((AE_INFO, status, "During walk_namespace"));
+ goto error_exit;
}
ACPI_DEBUG_PRINT_RAW((ACPI_DB_INIT,
- "\n%hd Devices found - executed %hd _STA, %hd _INI methods\n",
- info.device_count, info.num_STA, info.num_INI));
+ "\nExecuted %hd _INI methods requiring %hd _STA executions (examined %hd objects)\n",
+ info.num_INI, info.num_STA, info.device_count));
return_ACPI_STATUS(status);
+
+ error_exit:
+ ACPI_EXCEPTION((AE_INFO, status, "During device initialization"));
+ return_ACPI_STATUS(status);
}
/*******************************************************************************
@@ -200,7 +220,7 @@ acpi_ns_init_one_object(acpi_handle obj_handle,
(struct acpi_namespace_node *)obj_handle;
union acpi_operand_object *obj_desc;
- ACPI_FUNCTION_NAME("ns_init_one_object");
+ ACPI_FUNCTION_NAME(ns_init_one_object);
info->object_count++;
@@ -311,6 +331,72 @@ acpi_ns_init_one_object(acpi_handle obj_handle,
/*******************************************************************************
*
+ * FUNCTION: acpi_ns_find_ini_methods
+ *
+ * PARAMETERS: acpi_walk_callback
+ *
+ * RETURN: acpi_status
+ *
+ * DESCRIPTION: Called during namespace walk. Finds objects named _INI under
+ * device/processor/thermal objects, and marks the entire subtree
+ * with a SUBTREE_HAS_INI flag. This flag is used during the
+ * subsequent device initialization walk to avoid entire subtrees
+ * that do not contain an _INI.
+ *
+ ******************************************************************************/
+
+static acpi_status
+acpi_ns_find_ini_methods(acpi_handle obj_handle,
+ u32 nesting_level, void *context, void **return_value)
+{
+ struct acpi_device_walk_info *info =
+ ACPI_CAST_PTR(struct acpi_device_walk_info, context);
+ struct acpi_namespace_node *node;
+ struct acpi_namespace_node *parent_node;
+
+ /* Keep count of device/processor/thermal objects */
+
+ node = ACPI_CAST_PTR(struct acpi_namespace_node, obj_handle);
+ if ((node->type == ACPI_TYPE_DEVICE) ||
+ (node->type == ACPI_TYPE_PROCESSOR) ||
+ (node->type == ACPI_TYPE_THERMAL)) {
+ info->device_count++;
+ return (AE_OK);
+ }
+
+ /* We are only looking for methods named _INI */
+
+ if (!ACPI_COMPARE_NAME(node->name.ascii, METHOD_NAME__INI)) {
+ return (AE_OK);
+ }
+
+ /*
+ * The only _INI methods that we care about are those that are
+ * present under Device, Processor, and Thermal objects.
+ */
+ parent_node = acpi_ns_get_parent_node(node);
+ switch (parent_node->type) {
+ case ACPI_TYPE_DEVICE:
+ case ACPI_TYPE_PROCESSOR:
+ case ACPI_TYPE_THERMAL:
+
+ /* Mark parent and bubble up the INI present flag to the root */
+
+ while (parent_node) {
+ parent_node->flags |= ANOBJ_SUBTREE_HAS_INI;
+ parent_node = acpi_ns_get_parent_node(parent_node);
+ }
+ break;
+
+ default:
+ break;
+ }
+
+ return (AE_OK);
+}
+
+/*******************************************************************************
+ *
* FUNCTION: acpi_ns_init_one_device
*
* PARAMETERS: acpi_walk_callback
@@ -327,119 +413,165 @@ static acpi_status
acpi_ns_init_one_device(acpi_handle obj_handle,
u32 nesting_level, void *context, void **return_value)
{
- struct acpi_device_walk_info *info =
- (struct acpi_device_walk_info *)context;
- struct acpi_parameter_info pinfo;
+ struct acpi_device_walk_info *walk_info =
+ ACPI_CAST_PTR(struct acpi_device_walk_info, context);
+ struct acpi_evaluate_info *info = walk_info->evaluate_info;
u32 flags;
acpi_status status;
- struct acpi_namespace_node *ini_node;
struct acpi_namespace_node *device_node;
- ACPI_FUNCTION_TRACE("ns_init_one_device");
+ ACPI_FUNCTION_TRACE(ns_init_one_device);
- device_node = acpi_ns_map_handle_to_node(obj_handle);
- if (!device_node) {
- return_ACPI_STATUS(AE_BAD_PARAMETER);
- }
+ /* We are interested in Devices, Processors and thermal_zones only */
- /*
- * We will run _STA/_INI on Devices, Processors and thermal_zones only
- */
+ device_node = ACPI_CAST_PTR(struct acpi_namespace_node, obj_handle);
if ((device_node->type != ACPI_TYPE_DEVICE) &&
(device_node->type != ACPI_TYPE_PROCESSOR) &&
(device_node->type != ACPI_TYPE_THERMAL)) {
return_ACPI_STATUS(AE_OK);
}
- if ((acpi_dbg_level <= ACPI_LV_ALL_EXCEPTIONS) &&
- (!(acpi_dbg_level & ACPI_LV_INFO))) {
- ACPI_DEBUG_PRINT_RAW((ACPI_DB_INIT, "."));
- }
-
- info->device_count++;
-
/*
- * Check if the _INI method exists for this device -
- * if _INI does not exist, there is no need to run _STA
- * No _INI means device requires no initialization
+ * Because of an earlier namespace analysis, all subtrees that contain an
+ * _INI method are tagged.
+ *
+ * If this device subtree does not contain any _INI methods, we
+ * can exit now and stop traversing this entire subtree.
*/
- status = acpi_ns_search_node(*ACPI_CAST_PTR(u32, METHOD_NAME__INI),
- device_node, ACPI_TYPE_METHOD, &ini_node);
- if (ACPI_FAILURE(status)) {
- /* No _INI method found - move on to next device */
-
- return_ACPI_STATUS(AE_OK);
+ if (!(device_node->flags & ANOBJ_SUBTREE_HAS_INI)) {
+ return_ACPI_STATUS(AE_CTRL_DEPTH);
}
/*
- * Run _STA to determine if we can run _INI on the device -
- * the device must be present before _INI can be run.
- * However, _STA is not required - assume device present if no _STA
+ * Run _STA to determine if this device is present and functioning. We
+ * must know this information for two important reasons (from ACPI spec):
+ *
+ * 1) We can only run _INI if the device is present.
+ * 2) We must abort the device tree walk on this subtree if the device is
+ * not present and is not functional (we will not examine the children)
+ *
+ * The _STA method is not required to be present under the device, we
+ * assume the device is present if _STA does not exist.
*/
- ACPI_DEBUG_EXEC(acpi_ut_display_init_pathname(ACPI_TYPE_METHOD,
- device_node,
- METHOD_NAME__STA));
-
- pinfo.node = device_node;
- pinfo.parameters = NULL;
- pinfo.parameter_type = ACPI_PARAM_ARGS;
+ ACPI_DEBUG_EXEC(acpi_ut_display_init_pathname
+ (ACPI_TYPE_METHOD, device_node, METHOD_NAME__STA));
- status = acpi_ut_execute_STA(pinfo.node, &flags);
+ status = acpi_ut_execute_STA(device_node, &flags);
if (ACPI_FAILURE(status)) {
+
/* Ignore error and move on to next device */
return_ACPI_STATUS(AE_OK);
}
+ /*
+ * Flags == -1 means that _STA was not found. In this case, we assume that
+ * the device is both present and functional.
+ *
+ * From the ACPI spec, description of _STA:
+ *
+ * "If a device object (including the processor object) does not have an
+ * _STA object, then OSPM assumes that all of the above bits are set (in
+ * other words, the device is present, ..., and functioning)"
+ */
if (flags != ACPI_UINT32_MAX) {
- info->num_STA++;
+ walk_info->num_STA++;
}
+ /*
+ * Examine the PRESENT and FUNCTIONING status bits
+ *
+ * Note: ACPI spec does not seem to specify behavior for the present but
+ * not functioning case, so we assume functioning if present.
+ */
if (!(flags & ACPI_STA_DEVICE_PRESENT)) {
- /* Don't look at children of a not present device */
- return_ACPI_STATUS(AE_CTRL_DEPTH);
+ /* Device is not present, we must examine the Functioning bit */
+
+ if (flags & ACPI_STA_DEVICE_FUNCTIONING) {
+ /*
+ * Device is not present but is "functioning". In this case,
+ * we will not run _INI, but we continue to examine the children
+ * of this device.
+ *
+ * From the ACPI spec, description of _STA: (Note - no mention
+ * of whether to run _INI or not on the device in question)
+ *
+ * "_STA may return bit 0 clear (not present) with bit 3 set
+ * (device is functional). This case is used to indicate a valid
+ * device for which no device driver should be loaded (for example,
+ * a bridge device.) Children of this device may be present and
+ * valid. OSPM should continue enumeration below a device whose
+ * _STA returns this bit combination"
+ */
+ return_ACPI_STATUS(AE_OK);
+ } else {
+ /*
+ * Device is not present and is not functioning. We must abort the
+ * walk of this subtree immediately -- don't look at the children
+ * of such a device.
+ *
+ * From the ACPI spec, description of _INI:
+ *
+ * "If the _STA method indicates that the device is not present,
+ * OSPM will not run the _INI and will not examine the children
+ * of the device for _INI methods"
+ */
+ return_ACPI_STATUS(AE_CTRL_DEPTH);
+ }
}
/*
- * The device is present and _INI exists. Run the _INI method.
- * (We already have the _INI node from above)
+ * The device is present or is assumed present if no _STA exists.
+ * Run the _INI if it exists (not required to exist)
+ *
+ * Note: We know there is an _INI within this subtree, but it may not be
+ * under this particular device, it may be lower in the branch.
*/
- ACPI_DEBUG_EXEC(acpi_ut_display_init_pathname(ACPI_TYPE_METHOD,
- pinfo.node,
- METHOD_NAME__INI));
+ ACPI_DEBUG_EXEC(acpi_ut_display_init_pathname
+ (ACPI_TYPE_METHOD, device_node, METHOD_NAME__INI));
+
+ info->prefix_node = device_node;
+ info->pathname = METHOD_NAME__INI;
+ info->parameters = NULL;
+ info->parameter_type = ACPI_PARAM_ARGS;
+ info->flags = ACPI_IGNORE_RETURN_VALUE;
+
+ status = acpi_ns_evaluate(info);
+ if (ACPI_SUCCESS(status)) {
+ walk_info->num_INI++;
+
+ if ((acpi_dbg_level <= ACPI_LV_ALL_EXCEPTIONS) &&
+ (!(acpi_dbg_level & ACPI_LV_INFO))) {
+ ACPI_DEBUG_PRINT_RAW((ACPI_DB_INIT, "."));
+ }
+ }
+#ifdef ACPI_DEBUG_OUTPUT
+ else if (status != AE_NOT_FOUND) {
- pinfo.node = ini_node;
- status = acpi_ns_evaluate_by_handle(&pinfo);
- if (ACPI_FAILURE(status)) {
/* Ignore error and move on to next device */
-#ifdef ACPI_DEBUG_OUTPUT
- char *scope_name = acpi_ns_get_external_pathname(ini_node);
-
- ACPI_WARNING((AE_INFO, "%s._INI failed: %s",
- scope_name, acpi_format_exception(status)));
+ char *scope_name =
+ acpi_ns_get_external_pathname(info->resolved_node);
- ACPI_MEM_FREE(scope_name);
+ ACPI_EXCEPTION((AE_INFO, status, "during %s._INI execution",
+ scope_name));
+ ACPI_FREE(scope_name);
+ }
#endif
- } else {
- /* Delete any return object (especially if implicit_return is enabled) */
- if (pinfo.return_object) {
- acpi_ut_remove_reference(pinfo.return_object);
- }
+ /* Ignore errors from above */
- /* Count of successful INIs */
-
- info->num_INI++;
- }
+ status = AE_OK;
+ /*
+ * The _INI method has been run if present; call the Global Initialization
+ * Handler for this device.
+ */
if (acpi_gbl_init_handler) {
- /* External initialization handler is present, call it */
-
status =
- acpi_gbl_init_handler(pinfo.node, ACPI_INIT_DEVICE_INI);
+ acpi_gbl_init_handler(device_node, ACPI_INIT_DEVICE_INI);
}
- return_ACPI_STATUS(AE_OK);
+ return_ACPI_STATUS(status);
}
diff --git a/drivers/acpi/namespace/nsload.c b/drivers/acpi/namespace/nsload.c
index 4e0b0524c18..fe75d888e18 100644
--- a/drivers/acpi/namespace/nsload.c
+++ b/drivers/acpi/namespace/nsload.c
@@ -77,13 +77,14 @@ acpi_ns_load_table(struct acpi_table_desc *table_desc,
{
acpi_status status;
- ACPI_FUNCTION_TRACE("ns_load_table");
+ ACPI_FUNCTION_TRACE(ns_load_table);
/* Check if table contains valid AML (must be DSDT, PSDT, SSDT, etc.) */
if (!
(acpi_gbl_table_data[table_desc->type].
flags & ACPI_TABLE_EXECUTABLE)) {
+
/* Just ignore this table */
return_ACPI_STATUS(AE_OK);
@@ -168,7 +169,7 @@ static acpi_status acpi_ns_load_table_by_type(acpi_table_type table_type)
acpi_status status;
struct acpi_table_desc *table_desc;
- ACPI_FUNCTION_TRACE("ns_load_table_by_type");
+ ACPI_FUNCTION_TRACE(ns_load_table_by_type);
status = acpi_ut_acquire_mutex(ACPI_MTX_TABLES);
if (ACPI_FAILURE(status)) {
@@ -180,11 +181,11 @@ static acpi_status acpi_ns_load_table_by_type(acpi_table_type table_type)
* DSDT (one), SSDT/PSDT (multiple)
*/
switch (table_type) {
- case ACPI_TABLE_DSDT:
+ case ACPI_TABLE_ID_DSDT:
ACPI_DEBUG_PRINT((ACPI_DB_INFO, "Namespace load: DSDT\n"));
- table_desc = acpi_gbl_table_lists[ACPI_TABLE_DSDT].next;
+ table_desc = acpi_gbl_table_lists[ACPI_TABLE_ID_DSDT].next;
/* If table already loaded into namespace, just return */
@@ -200,8 +201,8 @@ static acpi_status acpi_ns_load_table_by_type(acpi_table_type table_type)
}
break;
- case ACPI_TABLE_SSDT:
- case ACPI_TABLE_PSDT:
+ case ACPI_TABLE_ID_SSDT:
+ case ACPI_TABLE_ID_PSDT:
ACPI_DEBUG_PRINT((ACPI_DB_INFO,
"Namespace load: %d SSDT or PSDTs\n",
@@ -258,7 +259,7 @@ acpi_status acpi_ns_load_namespace(void)
{
acpi_status status;
- ACPI_FUNCTION_TRACE("acpi_load_name_space");
+ ACPI_FUNCTION_TRACE(acpi_load_name_space);
/* There must be at least a DSDT installed */
@@ -271,15 +272,15 @@ acpi_status acpi_ns_load_namespace(void)
* Load the namespace. The DSDT is required,
* but the SSDT and PSDT tables are optional.
*/
- status = acpi_ns_load_table_by_type(ACPI_TABLE_DSDT);
+ status = acpi_ns_load_table_by_type(ACPI_TABLE_ID_DSDT);
if (ACPI_FAILURE(status)) {
return_ACPI_STATUS(status);
}
/* Ignore exceptions from these */
- (void)acpi_ns_load_table_by_type(ACPI_TABLE_SSDT);
- (void)acpi_ns_load_table_by_type(ACPI_TABLE_PSDT);
+ (void)acpi_ns_load_table_by_type(ACPI_TABLE_ID_SSDT);
+ (void)acpi_ns_load_table_by_type(ACPI_TABLE_ID_PSDT);
ACPI_DEBUG_PRINT_RAW((ACPI_DB_INIT,
"ACPI Namespace successfully loaded at root %p\n",
@@ -314,7 +315,7 @@ static acpi_status acpi_ns_delete_subtree(acpi_handle start_handle)
acpi_handle dummy;
u32 level;
- ACPI_FUNCTION_TRACE("ns_delete_subtree");
+ ACPI_FUNCTION_TRACE(ns_delete_subtree);
parent_handle = start_handle;
child_handle = NULL;
@@ -325,6 +326,7 @@ static acpi_status acpi_ns_delete_subtree(acpi_handle start_handle)
* to where we started.
*/
while (level > 0) {
+
/* Attempt to get the next object in this scope */
status = acpi_get_next_object(ACPI_TYPE_ANY, parent_handle,
@@ -335,6 +337,7 @@ static acpi_status acpi_ns_delete_subtree(acpi_handle start_handle)
/* Did we get a new object? */
if (ACPI_SUCCESS(status)) {
+
/* Check if this object has any children */
if (ACPI_SUCCESS
@@ -392,7 +395,7 @@ acpi_status acpi_ns_unload_namespace(acpi_handle handle)
{
acpi_status status;
- ACPI_FUNCTION_TRACE("ns_unload_name_space");
+ ACPI_FUNCTION_TRACE(ns_unload_name_space);
/* Parameter validation */
diff --git a/drivers/acpi/namespace/nsnames.c b/drivers/acpi/namespace/nsnames.c
index 639f653b4b6..97b8332c974 100644
--- a/drivers/acpi/namespace/nsnames.c
+++ b/drivers/acpi/namespace/nsnames.c
@@ -48,11 +48,6 @@
#define _COMPONENT ACPI_NAMESPACE
ACPI_MODULE_NAME("nsnames")
-/* Local prototypes */
-static void
-acpi_ns_build_external_path(struct acpi_namespace_node *node,
- acpi_size size, char *name_buffer);
-
/*******************************************************************************
*
* FUNCTION: acpi_ns_build_external_path
@@ -67,8 +62,7 @@ acpi_ns_build_external_path(struct acpi_namespace_node *node,
* DESCRIPTION: Generate a full pathaname
*
******************************************************************************/
-
-static void
+void
acpi_ns_build_external_path(struct acpi_namespace_node *node,
acpi_size size, char *name_buffer)
{
@@ -138,7 +132,7 @@ char *acpi_ns_get_external_pathname(struct acpi_namespace_node *node)
char *name_buffer;
acpi_size size;
- ACPI_FUNCTION_TRACE_PTR("ns_get_external_pathname", node);
+ ACPI_FUNCTION_TRACE_PTR(ns_get_external_pathname, node);
/* Calculate required buffer size based on depth below root */
@@ -146,7 +140,7 @@ char *acpi_ns_get_external_pathname(struct acpi_namespace_node *node)
/* Allocate a buffer to be returned to caller */
- name_buffer = ACPI_MEM_CALLOCATE(size);
+ name_buffer = ACPI_ALLOCATE_ZEROED(size);
if (!name_buffer) {
ACPI_ERROR((AE_INFO, "Allocation failure"));
return_PTR(NULL);
@@ -219,7 +213,7 @@ acpi_ns_handle_to_pathname(acpi_handle target_handle,
struct acpi_namespace_node *node;
acpi_size required_size;
- ACPI_FUNCTION_TRACE_PTR("ns_handle_to_pathname", target_handle);
+ ACPI_FUNCTION_TRACE_PTR(ns_handle_to_pathname, target_handle);
node = acpi_ns_map_handle_to_node(target_handle);
if (!node) {
diff --git a/drivers/acpi/namespace/nsobject.c b/drivers/acpi/namespace/nsobject.c
index 10ae6292bca..aabe8794b90 100644
--- a/drivers/acpi/namespace/nsobject.c
+++ b/drivers/acpi/namespace/nsobject.c
@@ -76,19 +76,21 @@ acpi_ns_attach_object(struct acpi_namespace_node *node,
union acpi_operand_object *last_obj_desc;
acpi_object_type object_type = ACPI_TYPE_ANY;
- ACPI_FUNCTION_TRACE("ns_attach_object");
+ ACPI_FUNCTION_TRACE(ns_attach_object);
/*
* Parameter validation
*/
if (!node) {
+
/* Invalid handle */
- ACPI_ERROR((AE_INFO, "Null named_obj handle"));
+ ACPI_ERROR((AE_INFO, "Null NamedObj handle"));
return_ACPI_STATUS(AE_BAD_PARAMETER);
}
if (!object && (ACPI_TYPE_ANY != type)) {
+
/* Null object */
ACPI_ERROR((AE_INFO,
@@ -97,6 +99,7 @@ acpi_ns_attach_object(struct acpi_namespace_node *node,
}
if (ACPI_GET_DESCRIPTOR_TYPE(node) != ACPI_DESC_TYPE_NAMED) {
+
/* Not a name handle */
ACPI_ERROR((AE_INFO, "Invalid handle %p [%s]",
@@ -108,7 +111,7 @@ acpi_ns_attach_object(struct acpi_namespace_node *node,
if (node->object == object) {
ACPI_DEBUG_PRINT((ACPI_DB_EXEC,
- "Obj %p already installed in name_obj %p\n",
+ "Obj %p already installed in NameObj %p\n",
object, node));
return_ACPI_STATUS(AE_OK);
@@ -201,7 +204,7 @@ void acpi_ns_detach_object(struct acpi_namespace_node *node)
{
union acpi_operand_object *obj_desc;
- ACPI_FUNCTION_TRACE("ns_detach_object");
+ ACPI_FUNCTION_TRACE(ns_detach_object);
obj_desc = node->object;
@@ -252,7 +255,7 @@ union acpi_operand_object *acpi_ns_get_attached_object(struct
acpi_namespace_node
*node)
{
- ACPI_FUNCTION_TRACE_PTR("ns_get_attached_object", node);
+ ACPI_FUNCTION_TRACE_PTR(ns_get_attached_object, node);
if (!node) {
ACPI_WARNING((AE_INFO, "Null Node ptr"));
@@ -287,7 +290,7 @@ union acpi_operand_object *acpi_ns_get_secondary_object(union
acpi_operand_object
*obj_desc)
{
- ACPI_FUNCTION_TRACE_PTR("ns_get_secondary_object", obj_desc);
+ ACPI_FUNCTION_TRACE_PTR(ns_get_secondary_object, obj_desc);
if ((!obj_desc) ||
(ACPI_GET_OBJECT_TYPE(obj_desc) == ACPI_TYPE_LOCAL_DATA) ||
diff --git a/drivers/acpi/namespace/nsparse.c b/drivers/acpi/namespace/nsparse.c
index 232be430365..155505a4ef6 100644
--- a/drivers/acpi/namespace/nsparse.c
+++ b/drivers/acpi/namespace/nsparse.c
@@ -62,13 +62,13 @@ ACPI_MODULE_NAME("nsparse")
*
******************************************************************************/
acpi_status
-acpi_ns_one_complete_parse(u8 pass_number, struct acpi_table_desc * table_desc)
+acpi_ns_one_complete_parse(u8 pass_number, struct acpi_table_desc *table_desc)
{
union acpi_parse_object *parse_root;
acpi_status status;
struct acpi_walk_state *walk_state;
- ACPI_FUNCTION_TRACE("ns_one_complete_parse");
+ ACPI_FUNCTION_TRACE(ns_one_complete_parse);
/* Create and init a Root Node */
@@ -124,7 +124,7 @@ acpi_ns_parse_table(struct acpi_table_desc *table_desc,
{
acpi_status status;
- ACPI_FUNCTION_TRACE("ns_parse_table");
+ ACPI_FUNCTION_TRACE(ns_parse_table);
/*
* AML Parse, pass 1
diff --git a/drivers/acpi/namespace/nssearch.c b/drivers/acpi/namespace/nssearch.c
index d64b78952f2..500e2bbcfaf 100644
--- a/drivers/acpi/namespace/nssearch.c
+++ b/drivers/acpi/namespace/nssearch.c
@@ -56,16 +56,16 @@ acpi_ns_search_parent_tree(u32 target_name,
/*******************************************************************************
*
- * FUNCTION: acpi_ns_search_node
+ * FUNCTION: acpi_ns_search_one_scope
*
* PARAMETERS: target_name - Ascii ACPI name to search for
- * Node - Starting node where search will begin
+ * parent_node - Starting node where search will begin
* Type - Object type to match
* return_node - Where the matched Named obj is returned
*
* RETURN: Status
*
- * DESCRIPTION: Search a single level of the namespace. Performs a
+ * DESCRIPTION: Search a single level of the namespace. Performs a
* simple search of the specified level, and does not add
* entries or search parents.
*
@@ -75,35 +75,40 @@ acpi_ns_search_parent_tree(u32 target_name,
*
* All namespace searching is linear in this implementation, but
* could be easily modified to support any improved search
- * algorithm. However, the linear search was chosen for simplicity
+ * algorithm. However, the linear search was chosen for simplicity
* and because the trees are small and the other interpreter
* execution overhead is relatively high.
*
+ * Note: CPU execution analysis has shown that the AML interpreter spends
+ * a very small percentage of its time searching the namespace. Therefore,
+ * the linear search seems to be sufficient, as there would seem to be
+ * little value in improving the search.
+ *
******************************************************************************/
acpi_status
-acpi_ns_search_node(u32 target_name,
- struct acpi_namespace_node *node,
- acpi_object_type type,
- struct acpi_namespace_node **return_node)
+acpi_ns_search_one_scope(u32 target_name,
+ struct acpi_namespace_node *parent_node,
+ acpi_object_type type,
+ struct acpi_namespace_node **return_node)
{
- struct acpi_namespace_node *next_node;
+ struct acpi_namespace_node *node;
- ACPI_FUNCTION_TRACE("ns_search_node");
+ ACPI_FUNCTION_TRACE(ns_search_one_scope);
#ifdef ACPI_DEBUG_OUTPUT
if (ACPI_LV_NAMES & acpi_dbg_level) {
char *scope_name;
- scope_name = acpi_ns_get_external_pathname(node);
+ scope_name = acpi_ns_get_external_pathname(parent_node);
if (scope_name) {
ACPI_DEBUG_PRINT((ACPI_DB_NAMES,
"Searching %s (%p) For [%4.4s] (%s)\n",
- scope_name, node, ACPI_CAST_PTR(char,
- &target_name),
+ scope_name, parent_node,
+ ACPI_CAST_PTR(char, &target_name),
acpi_ut_get_type_name(type)));
- ACPI_MEM_FREE(scope_name);
+ ACPI_FREE(scope_name);
}
}
#endif
@@ -112,32 +117,33 @@ acpi_ns_search_node(u32 target_name,
* Search for name at this namespace level, which is to say that we
* must search for the name among the children of this object
*/
- next_node = node->child;
- while (next_node) {
+ node = parent_node->child;
+ while (node) {
+
/* Check for match against the name */
- if (next_node->name.integer == target_name) {
+ if (node->name.integer == target_name) {
+
/* Resolve a control method alias if any */
- if (acpi_ns_get_type(next_node) ==
+ if (acpi_ns_get_type(node) ==
ACPI_TYPE_LOCAL_METHOD_ALIAS) {
- next_node =
+ node =
ACPI_CAST_PTR(struct acpi_namespace_node,
- next_node->object);
+ node->object);
}
- /*
- * Found matching entry.
- */
+ /* Found matching entry */
+
ACPI_DEBUG_PRINT((ACPI_DB_NAMES,
"Name [%4.4s] (%s) %p found in scope [%4.4s] %p\n",
ACPI_CAST_PTR(char, &target_name),
- acpi_ut_get_type_name(next_node->
- type),
- next_node,
- acpi_ut_get_node_name(node), node));
+ acpi_ut_get_type_name(node->type),
+ node,
+ acpi_ut_get_node_name(parent_node),
+ parent_node));
- *return_node = next_node;
+ *return_node = node;
return_ACPI_STATUS(AE_OK);
}
@@ -145,7 +151,8 @@ acpi_ns_search_node(u32 target_name,
* The last entry in the list points back to the parent,
* so a flag is used to indicate the end-of-list
*/
- if (next_node->flags & ANOBJ_END_OF_PEER_LIST) {
+ if (node->flags & ANOBJ_END_OF_PEER_LIST) {
+
/* Searched entire list, we are done */
break;
@@ -153,7 +160,7 @@ acpi_ns_search_node(u32 target_name,
/* Didn't match name, move on to the next peer object */
- next_node = next_node->peer;
+ node = node->peer;
}
/* Searched entire namespace level, not found */
@@ -162,7 +169,8 @@ acpi_ns_search_node(u32 target_name,
"Name [%4.4s] (%s) not found in search in scope [%4.4s] %p first child %p\n",
ACPI_CAST_PTR(char, &target_name),
acpi_ut_get_type_name(type),
- acpi_ut_get_node_name(node), node, node->child));
+ acpi_ut_get_node_name(parent_node), parent_node,
+ parent_node->child));
return_ACPI_STATUS(AE_NOT_FOUND);
}
@@ -179,14 +187,14 @@ acpi_ns_search_node(u32 target_name,
* RETURN: Status
*
* DESCRIPTION: Called when a name has not been found in the current namespace
- * level. Before adding it or giving up, ACPI scope rules require
+ * level. Before adding it or giving up, ACPI scope rules require
* searching enclosing scopes in cases identified by acpi_ns_local().
*
* "A name is located by finding the matching name in the current
* name space, and then in the parent name space. If the parent
* name space does not contain the name, the search continues
* recursively until either the name is found or the name space
- * does not have a parent (the root of the name space). This
+ * does not have a parent (the root of the name space). This
* indicates that the name is not found" (From ACPI Specification,
* section 5.3)
*
@@ -201,7 +209,7 @@ acpi_ns_search_parent_tree(u32 target_name,
acpi_status status;
struct acpi_namespace_node *parent_node;
- ACPI_FUNCTION_TRACE("ns_search_parent_tree");
+ ACPI_FUNCTION_TRACE(ns_search_parent_tree);
parent_node = acpi_ns_get_parent_node(node);
@@ -235,20 +243,19 @@ acpi_ns_search_parent_tree(u32 target_name,
*/
while (parent_node) {
/*
- * Search parent scope. Use TYPE_ANY because we don't care about the
+ * Search parent scope. Use TYPE_ANY because we don't care about the
* object type at this point, we only care about the existence of
- * the actual name we are searching for. Typechecking comes later.
+ * the actual name we are searching for. Typechecking comes later.
*/
- status = acpi_ns_search_node(target_name, parent_node,
+ status =
+ acpi_ns_search_one_scope(target_name, parent_node,
ACPI_TYPE_ANY, return_node);
if (ACPI_SUCCESS(status)) {
return_ACPI_STATUS(status);
}
- /*
- * Not found here, go up another level
- * (until we reach the root)
- */
+ /* Not found here, go up another level (until we reach the root) */
+
parent_node = acpi_ns_get_parent_node(parent_node);
}
@@ -273,7 +280,7 @@ acpi_ns_search_parent_tree(u32 target_name,
* RETURN: Status
*
* DESCRIPTION: Search for a name segment in a single namespace level,
- * optionally adding it if it is not found. If the passed
+ * optionally adding it if it is not found. If the passed
* Type is not Any and the type previously stored in the
* entry was Any (i.e. unknown), update the stored type.
*
@@ -293,29 +300,46 @@ acpi_ns_search_and_enter(u32 target_name,
acpi_status status;
struct acpi_namespace_node *new_node;
- ACPI_FUNCTION_TRACE("ns_search_and_enter");
+ ACPI_FUNCTION_TRACE(ns_search_and_enter);
/* Parameter validation */
if (!node || !target_name || !return_node) {
ACPI_ERROR((AE_INFO,
- "Null param: Node %p Name %X return_node %p",
+ "Null parameter: Node %p Name %X ReturnNode %p",
node, target_name, return_node));
return_ACPI_STATUS(AE_BAD_PARAMETER);
}
- /* Name must consist of printable characters */
-
+ /*
+ * Name must consist of valid ACPI characters. We will repair the name if
+ * necessary because we don't want to abort because of this, but we want
+ * all namespace names to be printable. A warning message is appropriate.
+ *
+ * This issue came up because there are in fact machines that exhibit
+ * this problem, and we want to be able to enable ACPI support for them,
+ * even though there are a few bad names.
+ */
if (!acpi_ut_valid_acpi_name(target_name)) {
- ACPI_ERROR((AE_INFO, "Bad character in ACPI Name: %X",
- target_name));
- return_ACPI_STATUS(AE_BAD_CHARACTER);
+ target_name = acpi_ut_repair_name(target_name);
+
+ /* Report warning only if in strict mode or debug mode */
+
+ if (!acpi_gbl_enable_interpreter_slack) {
+ ACPI_WARNING((AE_INFO,
+ "Found bad character(s) in name, repaired: [%4.4s]\n",
+ ACPI_CAST_PTR(char, &target_name)));
+ } else {
+ ACPI_DEBUG_PRINT((ACPI_DB_WARN,
+ "Found bad character(s) in name, repaired: [%4.4s]\n",
+ ACPI_CAST_PTR(char, &target_name)));
+ }
}
/* Try to find the name in the namespace level specified by the caller */
*return_node = ACPI_ENTRY_NOT_FOUND;
- status = acpi_ns_search_node(target_name, node, type, return_node);
+ status = acpi_ns_search_one_scope(target_name, node, type, return_node);
if (status != AE_NOT_FOUND) {
/*
* If we found it AND the request specifies that a find is an error,
@@ -325,18 +349,16 @@ acpi_ns_search_and_enter(u32 target_name,
status = AE_ALREADY_EXISTS;
}
- /*
- * Either found it or there was an error
- * -- finished either way
- */
+ /* Either found it or there was an error: finished either way */
+
return_ACPI_STATUS(status);
}
/*
- * The name was not found. If we are NOT performing the first pass
+ * The name was not found. If we are NOT performing the first pass
* (name entry) of loading the namespace, search the parent tree (all the
* way to the root if necessary.) We don't want to perform the parent
- * search when the namespace is actually being loaded. We want to perform
+ * search when the namespace is actually being loaded. We want to perform
* the search when namespace references are being resolved (load pass 2)
* and during the execution phase.
*/
@@ -354,9 +376,8 @@ acpi_ns_search_and_enter(u32 target_name,
}
}
- /*
- * In execute mode, just search, never add names. Exit now.
- */
+ /* In execute mode, just search, never add names. Exit now */
+
if (interpreter_mode == ACPI_IMODE_EXECUTE) {
ACPI_DEBUG_PRINT((ACPI_DB_NAMES,
"%4.4s Not found in %p [Not adding]\n",
@@ -371,11 +392,18 @@ acpi_ns_search_and_enter(u32 target_name,
if (!new_node) {
return_ACPI_STATUS(AE_NO_MEMORY);
}
+#ifdef ACPI_ASL_COMPILER
+ /*
+ * Node is an object defined by an External() statement
+ */
+ if (flags & ACPI_NS_EXTERNAL) {
+ new_node->flags |= ANOBJ_IS_EXTERNAL;
+ }
+#endif
/* Install the new object into the parent's list of children */
acpi_ns_install_node(walk_state, node, new_node, type);
*return_node = new_node;
-
return_ACPI_STATUS(AE_OK);
}
diff --git a/drivers/acpi/namespace/nsutils.c b/drivers/acpi/namespace/nsutils.c
index 3e7cad549a3..aa4e799d9a8 100644
--- a/drivers/acpi/namespace/nsutils.c
+++ b/drivers/acpi/namespace/nsutils.c
@@ -78,15 +78,17 @@ acpi_ns_report_error(char *module_name,
char *internal_name, acpi_status lookup_status)
{
acpi_status status;
+ u32 bad_name;
char *name = NULL;
- acpi_ut_report_error(module_name, line_number);
+ acpi_os_printf("ACPI Error (%s-%04d): ", module_name, line_number);
if (lookup_status == AE_BAD_CHARACTER) {
+
/* There is a non-ascii character in the name */
- acpi_os_printf("[0x%4.4X] (NON-ASCII)",
- *(ACPI_CAST_PTR(u32, internal_name)));
+ ACPI_MOVE_32_TO_32(&bad_name, internal_name);
+ acpi_os_printf("[0x%4.4X] (NON-ASCII)", bad_name);
} else {
/* Convert path to external format */
@@ -102,7 +104,7 @@ acpi_ns_report_error(char *module_name,
}
if (name) {
- ACPI_MEM_FREE(name);
+ ACPI_FREE(name);
}
}
@@ -137,11 +139,12 @@ acpi_ns_report_method_error(char *module_name,
acpi_status status;
struct acpi_namespace_node *node = prefix_node;
- acpi_ut_report_error(module_name, line_number);
+ acpi_os_printf("ACPI Error (%s-%04d): ", module_name, line_number);
if (path) {
- status = acpi_ns_get_node_by_path(path, prefix_node,
- ACPI_NS_NO_UPSEARCH, &node);
+ status =
+ acpi_ns_get_node(prefix_node, path, ACPI_NS_NO_UPSEARCH,
+ &node);
if (ACPI_FAILURE(status)) {
acpi_os_printf("[Could not get node by pathname]");
}
@@ -185,7 +188,7 @@ acpi_ns_print_node_pathname(struct acpi_namespace_node *node, char *message)
}
acpi_os_printf("[%s] (Node %p)", (char *)buffer.pointer, node);
- ACPI_MEM_FREE(buffer.pointer);
+ ACPI_FREE(buffer.pointer);
}
}
@@ -239,7 +242,7 @@ static u8 acpi_ns_valid_path_separator(char sep)
acpi_object_type acpi_ns_get_type(struct acpi_namespace_node * node)
{
- ACPI_FUNCTION_TRACE("ns_get_type");
+ ACPI_FUNCTION_TRACE(ns_get_type);
if (!node) {
ACPI_WARNING((AE_INFO, "Null Node parameter"));
@@ -264,9 +267,10 @@ acpi_object_type acpi_ns_get_type(struct acpi_namespace_node * node)
u32 acpi_ns_local(acpi_object_type type)
{
- ACPI_FUNCTION_TRACE("ns_local");
+ ACPI_FUNCTION_TRACE(ns_local);
if (!acpi_ut_valid_object_type(type)) {
+
/* Type code out of range */
ACPI_WARNING((AE_INFO, "Invalid Object Type %X", type));
@@ -363,7 +367,7 @@ acpi_status acpi_ns_build_internal_name(struct acpi_namestring_info *info)
char *result = NULL;
acpi_native_uint i;
- ACPI_FUNCTION_TRACE("ns_build_internal_name");
+ ACPI_FUNCTION_TRACE(ns_build_internal_name);
/* Setup the correct prefixes, counts, and pointers */
@@ -411,6 +415,7 @@ acpi_status acpi_ns_build_internal_name(struct acpi_namestring_info *info)
for (i = 0; i < ACPI_NAME_SIZE; i++) {
if (acpi_ns_valid_path_separator(*external_name) ||
(*external_name == 0)) {
+
/* Pad the segment with underscore(s) if segment is short */
result[i] = '_';
@@ -473,7 +478,7 @@ acpi_status acpi_ns_internalize_name(char *external_name, char **converted_name)
struct acpi_namestring_info info;
acpi_status status;
- ACPI_FUNCTION_TRACE("ns_internalize_name");
+ ACPI_FUNCTION_TRACE(ns_internalize_name);
if ((!external_name) || (*external_name == 0) || (!converted_name)) {
return_ACPI_STATUS(AE_BAD_PARAMETER);
@@ -486,7 +491,7 @@ acpi_status acpi_ns_internalize_name(char *external_name, char **converted_name)
/* We need a segment to store the internal name */
- internal_name = ACPI_MEM_CALLOCATE(info.length);
+ internal_name = ACPI_ALLOCATE_ZEROED(info.length);
if (!internal_name) {
return_ACPI_STATUS(AE_NO_MEMORY);
}
@@ -496,7 +501,7 @@ acpi_status acpi_ns_internalize_name(char *external_name, char **converted_name)
info.internal_name = internal_name;
status = acpi_ns_build_internal_name(&info);
if (ACPI_FAILURE(status)) {
- ACPI_MEM_FREE(internal_name);
+ ACPI_FREE(internal_name);
return_ACPI_STATUS(status);
}
@@ -533,7 +538,7 @@ acpi_ns_externalize_name(u32 internal_name_length,
acpi_native_uint i = 0;
acpi_native_uint j = 0;
- ACPI_FUNCTION_TRACE("ns_externalize_name");
+ ACPI_FUNCTION_TRACE(ns_externalize_name);
if (!internal_name_length || !internal_name || !converted_name) {
return_ACPI_STATUS(AE_BAD_PARAMETER);
@@ -628,7 +633,7 @@ acpi_ns_externalize_name(u32 internal_name_length,
/*
* Build converted_name
*/
- *converted_name = ACPI_MEM_CALLOCATE(required_length);
+ *converted_name = ACPI_ALLOCATE_ZEROED(required_length);
if (!(*converted_name)) {
return_ACPI_STATUS(AE_NO_MEMORY);
}
@@ -681,13 +686,9 @@ struct acpi_namespace_node *acpi_ns_map_handle_to_node(acpi_handle handle)
ACPI_FUNCTION_ENTRY();
/*
- * Simple implementation.
+ * Simple implementation
*/
- if (!handle) {
- return (NULL);
- }
-
- if (handle == ACPI_ROOT_OBJECT) {
+ if ((!handle) || (handle == ACPI_ROOT_OBJECT)) {
return (acpi_gbl_root_node);
}
@@ -697,7 +698,7 @@ struct acpi_namespace_node *acpi_ns_map_handle_to_node(acpi_handle handle)
return (NULL);
}
- return ((struct acpi_namespace_node *)handle);
+ return (ACPI_CAST_PTR(struct acpi_namespace_node, handle));
}
/*******************************************************************************
@@ -752,7 +753,7 @@ void acpi_ns_terminate(void)
{
union acpi_operand_object *obj_desc;
- ACPI_FUNCTION_TRACE("ns_terminate");
+ ACPI_FUNCTION_TRACE(ns_terminate);
/*
* 1) Free the entire namespace -- all nodes and objects
@@ -792,9 +793,10 @@ void acpi_ns_terminate(void)
u32 acpi_ns_opens_scope(acpi_object_type type)
{
- ACPI_FUNCTION_TRACE_STR("ns_opens_scope", acpi_ut_get_type_name(type));
+ ACPI_FUNCTION_TRACE_STR(ns_opens_scope, acpi_ut_get_type_name(type));
if (!acpi_ut_valid_object_type(type)) {
+
/* type code out of range */
ACPI_WARNING((AE_INFO, "Invalid Object Type %X", type));
@@ -806,12 +808,12 @@ u32 acpi_ns_opens_scope(acpi_object_type type)
/*******************************************************************************
*
- * FUNCTION: acpi_ns_get_node_by_path
+ * FUNCTION: acpi_ns_get_node
*
* PARAMETERS: *Pathname - Name to be found, in external (ASL) format. The
* \ (backslash) and ^ (carat) prefixes, and the
* . (period) to separate segments are supported.
- * start_node - Root of subtree to be searched, or NS_ALL for the
+ * prefix_node - Root of subtree to be searched, or NS_ALL for the
* root of the name space. If Name is fully
* qualified (first s8 is '\'), the passed value
* of Scope will not be accessed.
@@ -827,23 +829,29 @@ u32 acpi_ns_opens_scope(acpi_object_type type)
******************************************************************************/
acpi_status
-acpi_ns_get_node_by_path(char *pathname,
- struct acpi_namespace_node *start_node,
- u32 flags, struct acpi_namespace_node **return_node)
+acpi_ns_get_node(struct acpi_namespace_node *prefix_node,
+ char *pathname,
+ u32 flags, struct acpi_namespace_node **return_node)
{
union acpi_generic_state scope_info;
acpi_status status;
- char *internal_path = NULL;
-
- ACPI_FUNCTION_TRACE_PTR("ns_get_node_by_path", pathname);
+ char *internal_path;
- if (pathname) {
- /* Convert path to internal representation */
+ ACPI_FUNCTION_TRACE_PTR(ns_get_node, pathname);
- status = acpi_ns_internalize_name(pathname, &internal_path);
- if (ACPI_FAILURE(status)) {
- return_ACPI_STATUS(status);
+ if (!pathname) {
+ *return_node = prefix_node;
+ if (!prefix_node) {
+ *return_node = acpi_gbl_root_node;
}
+ return_ACPI_STATUS(AE_OK);
+ }
+
+ /* Convert path to internal representation */
+
+ status = acpi_ns_internalize_name(pathname, &internal_path);
+ if (ACPI_FAILURE(status)) {
+ return_ACPI_STATUS(status);
}
/* Must lock namespace during lookup */
@@ -855,26 +863,23 @@ acpi_ns_get_node_by_path(char *pathname,
/* Setup lookup scope (search starting point) */
- scope_info.scope.node = start_node;
+ scope_info.scope.node = prefix_node;
/* Lookup the name in the namespace */
- status = acpi_ns_lookup(&scope_info, internal_path,
- ACPI_TYPE_ANY, ACPI_IMODE_EXECUTE,
- (flags | ACPI_NS_DONT_OPEN_SCOPE),
- NULL, return_node);
+ status = acpi_ns_lookup(&scope_info, internal_path, ACPI_TYPE_ANY,
+ ACPI_IMODE_EXECUTE,
+ (flags | ACPI_NS_DONT_OPEN_SCOPE), NULL,
+ return_node);
if (ACPI_FAILURE(status)) {
ACPI_DEBUG_PRINT((ACPI_DB_INFO, "%s, %s\n",
- internal_path,
- acpi_format_exception(status)));
+ pathname, acpi_format_exception(status)));
}
(void)acpi_ut_release_mutex(ACPI_MTX_NAMESPACE);
cleanup:
- if (internal_path) {
- ACPI_MEM_FREE(internal_path);
- }
+ ACPI_FREE(internal_path);
return_ACPI_STATUS(status);
}
@@ -960,9 +965,10 @@ acpi_name acpi_ns_find_parent_name(struct acpi_namespace_node * child_node)
{
struct acpi_namespace_node *parent_node;
- ACPI_FUNCTION_TRACE("ns_find_parent_name");
+ ACPI_FUNCTION_TRACE(ns_find_parent_name);
if (child_node) {
+
/* Valid entry. Get the parent Node */
parent_node = acpi_ns_get_parent_node(child_node);
diff --git a/drivers/acpi/namespace/nswalk.c b/drivers/acpi/namespace/nswalk.c
index fcab1e784b8..c8f6bef16ed 100644
--- a/drivers/acpi/namespace/nswalk.c
+++ b/drivers/acpi/namespace/nswalk.c
@@ -76,6 +76,7 @@ struct acpi_namespace_node *acpi_ns_get_next_node(acpi_object_type type,
ACPI_FUNCTION_ENTRY();
if (!child_node) {
+
/* It's really the parent's _scope_ that we want */
if (parent_node->child) {
@@ -92,6 +93,7 @@ struct acpi_namespace_node *acpi_ns_get_next_node(acpi_object_type type,
/* If any type is OK, we are done */
if (type == ACPI_TYPE_ANY) {
+
/* next_node is NULL if we are at the end-of-list */
return (next_node);
@@ -100,6 +102,7 @@ struct acpi_namespace_node *acpi_ns_get_next_node(acpi_object_type type,
/* Must search for the node -- but within this scope only */
while (next_node) {
+
/* If type matches, we are done */
if (next_node->type == type) {
@@ -161,7 +164,7 @@ acpi_ns_walk_namespace(acpi_object_type type,
acpi_object_type child_type;
u32 level;
- ACPI_FUNCTION_TRACE("ns_walk_namespace");
+ ACPI_FUNCTION_TRACE(ns_walk_namespace);
/* Special case for the namespace Root Node */
@@ -182,6 +185,7 @@ acpi_ns_walk_namespace(acpi_object_type type,
* bubbled up to (and passed) the original parent handle (start_entry)
*/
while (level > 0) {
+
/* Get the next node in this scope. Null if not found */
status = AE_OK;
diff --git a/drivers/acpi/namespace/nsxfeval.c b/drivers/acpi/namespace/nsxfeval.c
index a95f636dc35..6d9bd45af30 100644
--- a/drivers/acpi/namespace/nsxfeval.c
+++ b/drivers/acpi/namespace/nsxfeval.c
@@ -42,8 +42,6 @@
* POSSIBILITY OF SUCH DAMAGES.
*/
-#include <linux/module.h>
-
#include <acpi/acpi.h>
#include <acpi/acnamesp.h>
#include <acpi/acinterp.h>
@@ -51,6 +49,7 @@
#define _COMPONENT ACPI_NAMESPACE
ACPI_MODULE_NAME("nsxfeval")
+#ifdef ACPI_FUTURE_USAGE
/*******************************************************************************
*
* FUNCTION: acpi_evaluate_object_typed
@@ -71,18 +70,17 @@ ACPI_MODULE_NAME("nsxfeval")
* be valid (non-null)
*
******************************************************************************/
-#ifdef ACPI_FUTURE_USAGE
acpi_status
acpi_evaluate_object_typed(acpi_handle handle,
acpi_string pathname,
- struct acpi_object_list *external_params,
- struct acpi_buffer *return_buffer,
+ struct acpi_object_list * external_params,
+ struct acpi_buffer * return_buffer,
acpi_object_type return_type)
{
acpi_status status;
u8 must_free = FALSE;
- ACPI_FUNCTION_TRACE("acpi_evaluate_object_typed");
+ ACPI_FUNCTION_TRACE(acpi_evaluate_object_typed);
/* Return buffer must be valid */
@@ -110,6 +108,7 @@ acpi_evaluate_object_typed(acpi_handle handle,
}
if (return_buffer->length == 0) {
+
/* Error because caller specifically asked for a return value */
ACPI_ERROR((AE_INFO, "No return value"));
@@ -131,6 +130,7 @@ acpi_evaluate_object_typed(acpi_handle handle,
acpi_ut_get_type_name(return_type)));
if (must_free) {
+
/* Caller used ACPI_ALLOCATE_BUFFER, free the return buffer */
acpi_os_free(return_buffer->pointer);
@@ -140,6 +140,8 @@ acpi_evaluate_object_typed(acpi_handle handle,
return_buffer->length = 0;
return_ACPI_STATUS(AE_TYPE);
}
+
+ACPI_EXPORT_SYMBOL(acpi_evaluate_object_typed)
#endif /* ACPI_FUTURE_USAGE */
/*******************************************************************************
@@ -161,7 +163,6 @@ acpi_evaluate_object_typed(acpi_handle handle,
* be valid (non-null)
*
******************************************************************************/
-
acpi_status
acpi_evaluate_object(acpi_handle handle,
acpi_string pathname,
@@ -170,51 +171,61 @@ acpi_evaluate_object(acpi_handle handle,
{
acpi_status status;
acpi_status status2;
- struct acpi_parameter_info info;
+ struct acpi_evaluate_info *info;
acpi_size buffer_space_needed;
u32 i;
- ACPI_FUNCTION_TRACE("acpi_evaluate_object");
+ ACPI_FUNCTION_TRACE(acpi_evaluate_object);
- info.node = handle;
- info.parameters = NULL;
- info.return_object = NULL;
- info.parameter_type = ACPI_PARAM_ARGS;
+ /* Allocate and initialize the evaluation information block */
+
+ info = ACPI_ALLOCATE_ZEROED(sizeof(struct acpi_evaluate_info));
+ if (!info) {
+ return_ACPI_STATUS(AE_NO_MEMORY);
+ }
+
+ info->pathname = pathname;
+ info->parameter_type = ACPI_PARAM_ARGS;
+
+ /* Convert and validate the device handle */
+
+ info->prefix_node = acpi_ns_map_handle_to_node(handle);
+ if (!info->prefix_node) {
+ status = AE_BAD_PARAMETER;
+ goto cleanup;
+ }
/*
- * If there are parameters to be passed to the object
- * (which must be a control method), the external objects
- * must be converted to internal objects
+ * If there are parameters to be passed to a control method, the external
+ * objects must all be converted to internal objects
*/
if (external_params && external_params->count) {
/*
* Allocate a new parameter block for the internal objects
* Add 1 to count to allow for null terminated internal list
*/
- info.parameters = ACPI_MEM_CALLOCATE(((acpi_size)
- external_params->count +
- 1) * sizeof(void *));
- if (!info.parameters) {
- return_ACPI_STATUS(AE_NO_MEMORY);
+ info->parameters = ACPI_ALLOCATE_ZEROED(((acpi_size)
+ external_params->
+ count +
+ 1) * sizeof(void *));
+ if (!info->parameters) {
+ status = AE_NO_MEMORY;
+ goto cleanup;
}
- /*
- * Convert each external object in the list to an
- * internal object
- */
+ /* Convert each external object in the list to an internal object */
+
for (i = 0; i < external_params->count; i++) {
status =
acpi_ut_copy_eobject_to_iobject(&external_params->
pointer[i],
- &info.
+ &info->
parameters[i]);
if (ACPI_FAILURE(status)) {
- acpi_ut_delete_internal_object_list(info.
- parameters);
- return_ACPI_STATUS(status);
+ goto cleanup;
}
}
- info.parameters[external_params->count] = NULL;
+ info->parameters[external_params->count] = NULL;
}
/*
@@ -224,43 +235,31 @@ acpi_evaluate_object(acpi_handle handle,
* 3) Valid handle
*/
if ((pathname) && (acpi_ns_valid_root_prefix(pathname[0]))) {
- /*
- * The path is fully qualified, just evaluate by name
- */
- status = acpi_ns_evaluate_by_name(pathname, &info);
+
+ /* The path is fully qualified, just evaluate by name */
+
+ info->prefix_node = NULL;
+ status = acpi_ns_evaluate(info);
} else if (!handle) {
/*
- * A handle is optional iff a fully qualified pathname
- * is specified. Since we've already handled fully
- * qualified names above, this is an error
+ * A handle is optional iff a fully qualified pathname is specified.
+ * Since we've already handled fully qualified names above, this is
+ * an error
*/
if (!pathname) {
- ACPI_ERROR((AE_INFO,
- "Both Handle and Pathname are NULL"));
+ ACPI_DEBUG_PRINT((ACPI_DB_INFO,
+ "Both Handle and Pathname are NULL"));
} else {
- ACPI_ERROR((AE_INFO,
- "Handle is NULL and Pathname is relative"));
+ ACPI_DEBUG_PRINT((ACPI_DB_INFO,
+ "Null Handle with relative pathname [%s]",
+ pathname));
}
status = AE_BAD_PARAMETER;
} else {
- /*
- * We get here if we have a handle -- and if we have a
- * pathname it is relative. The handle will be validated
- * in the lower procedures
- */
- if (!pathname) {
- /*
- * The null pathname case means the handle is for
- * the actual object to be evaluated
- */
- status = acpi_ns_evaluate_by_handle(&info);
- } else {
- /*
- * Both a Handle and a relative Pathname
- */
- status = acpi_ns_evaluate_relative(pathname, &info);
- }
+ /* We have a namespace a node and a possible relative path */
+
+ status = acpi_ns_evaluate(info);
}
/*
@@ -268,10 +267,10 @@ acpi_evaluate_object(acpi_handle handle,
* copy the return value to an external object.
*/
if (return_buffer) {
- if (!info.return_object) {
+ if (!info->return_object) {
return_buffer->length = 0;
} else {
- if (ACPI_GET_DESCRIPTOR_TYPE(info.return_object) ==
+ if (ACPI_GET_DESCRIPTOR_TYPE(info->return_object) ==
ACPI_DESC_TYPE_NAMED) {
/*
* If we received a NS Node as a return object, this means that
@@ -282,19 +281,19 @@ acpi_evaluate_object(acpi_handle handle,
* support for various types at a later date if necessary.
*/
status = AE_TYPE;
- info.return_object = NULL; /* No need to delete a NS Node */
+ info->return_object = NULL; /* No need to delete a NS Node */
return_buffer->length = 0;
}
if (ACPI_SUCCESS(status)) {
- /*
- * Find out how large a buffer is needed
- * to contain the returned object
- */
+
+ /* Get the size of the returned object */
+
status =
- acpi_ut_get_object_size(info.return_object,
+ acpi_ut_get_object_size(info->return_object,
&buffer_space_needed);
if (ACPI_SUCCESS(status)) {
+
/* Validate/Allocate/Clear caller buffer */
status =
@@ -303,7 +302,8 @@ acpi_evaluate_object(acpi_handle handle,
buffer_space_needed);
if (ACPI_FAILURE(status)) {
/*
- * Caller's buffer is too small or a new one can't be allocated
+ * Caller's buffer is too small or a new one can't
+ * be allocated
*/
ACPI_DEBUG_PRINT((ACPI_DB_INFO,
"Needed buffer size %X, %s\n",
@@ -312,12 +312,11 @@ acpi_evaluate_object(acpi_handle handle,
acpi_format_exception
(status)));
} else {
- /*
- * We have enough space for the object, build it
- */
+ /* We have enough space for the object, build it */
+
status =
acpi_ut_copy_iobject_to_eobject
- (info.return_object,
+ (info->return_object,
return_buffer);
}
}
@@ -325,35 +324,37 @@ acpi_evaluate_object(acpi_handle handle,
}
}
- if (info.return_object) {
+ if (info->return_object) {
/*
- * Delete the internal return object. NOTE: Interpreter
- * must be locked to avoid race condition.
+ * Delete the internal return object. NOTE: Interpreter must be
+ * locked to avoid race condition.
*/
status2 = acpi_ex_enter_interpreter();
if (ACPI_SUCCESS(status2)) {
- /*
- * Delete the internal return object. (Or at least
- * decrement the reference count by one)
- */
- acpi_ut_remove_reference(info.return_object);
+
+ /* Remove one reference on the return object (should delete it) */
+
+ acpi_ut_remove_reference(info->return_object);
acpi_ex_exit_interpreter();
}
}
- /*
- * Free the input parameter list (if we created one),
- */
- if (info.parameters) {
+ cleanup:
+
+ /* Free the input parameter list (if we created one) */
+
+ if (info->parameters) {
+
/* Free the allocated parameter block */
- acpi_ut_delete_internal_object_list(info.parameters);
+ acpi_ut_delete_internal_object_list(info->parameters);
}
+ ACPI_FREE(info);
return_ACPI_STATUS(status);
}
-EXPORT_SYMBOL(acpi_evaluate_object);
+ACPI_EXPORT_SYMBOL(acpi_evaluate_object)
/*******************************************************************************
*
@@ -384,7 +385,6 @@ EXPORT_SYMBOL(acpi_evaluate_object);
* function, etc.
*
******************************************************************************/
-
acpi_status
acpi_walk_namespace(acpi_object_type type,
acpi_handle start_object,
@@ -394,7 +394,7 @@ acpi_walk_namespace(acpi_object_type type,
{
acpi_status status;
- ACPI_FUNCTION_TRACE("acpi_walk_namespace");
+ ACPI_FUNCTION_TRACE(acpi_walk_namespace);
/* Parameter validation */
@@ -421,7 +421,7 @@ acpi_walk_namespace(acpi_object_type type,
return_ACPI_STATUS(status);
}
-EXPORT_SYMBOL(acpi_walk_namespace);
+ACPI_EXPORT_SYMBOL(acpi_walk_namespace)
/*******************************************************************************
*
@@ -436,7 +436,6 @@ EXPORT_SYMBOL(acpi_walk_namespace);
* on that.
*
******************************************************************************/
-
static acpi_status
acpi_ns_get_device_callback(acpi_handle obj_handle,
u32 nesting_level,
@@ -473,6 +472,7 @@ acpi_ns_get_device_callback(acpi_handle obj_handle,
}
if (!(flags & ACPI_STA_DEVICE_PRESENT)) {
+
/* Don't examine children of the device if not present */
return (AE_CTRL_DEPTH);
@@ -489,6 +489,7 @@ acpi_ns_get_device_callback(acpi_handle obj_handle,
}
if (ACPI_STRNCMP(hid.value, info->hid, sizeof(hid.value)) != 0) {
+
/* Get the list of Compatible IDs */
status = acpi_ut_execute_CID(node, &cid);
@@ -505,11 +506,11 @@ acpi_ns_get_device_callback(acpi_handle obj_handle,
sizeof(struct
acpi_compatible_id)) !=
0) {
- ACPI_MEM_FREE(cid);
+ ACPI_FREE(cid);
return (AE_OK);
}
}
- ACPI_MEM_FREE(cid);
+ ACPI_FREE(cid);
}
}
@@ -551,7 +552,7 @@ acpi_get_devices(char *HID,
acpi_status status;
struct acpi_get_devices_info info;
- ACPI_FUNCTION_TRACE("acpi_get_devices");
+ ACPI_FUNCTION_TRACE(acpi_get_devices);
/* Parameter validation */
@@ -563,9 +564,9 @@ acpi_get_devices(char *HID,
* We're going to call their callback from OUR callback, so we need
* to know what it is, and their context parameter.
*/
+ info.hid = HID;
info.context = context;
info.user_function = user_function;
- info.hid = HID;
/*
* Lock the namespace around the walk.
@@ -578,9 +579,8 @@ acpi_get_devices(char *HID,
return_ACPI_STATUS(status);
}
- status = acpi_ns_walk_namespace(ACPI_TYPE_DEVICE,
- ACPI_ROOT_OBJECT, ACPI_UINT32_MAX,
- ACPI_NS_WALK_UNLOCK,
+ status = acpi_ns_walk_namespace(ACPI_TYPE_DEVICE, ACPI_ROOT_OBJECT,
+ ACPI_UINT32_MAX, ACPI_NS_WALK_UNLOCK,
acpi_ns_get_device_callback, &info,
return_value);
@@ -588,7 +588,7 @@ acpi_get_devices(char *HID,
return_ACPI_STATUS(status);
}
-EXPORT_SYMBOL(acpi_get_devices);
+ACPI_EXPORT_SYMBOL(acpi_get_devices)
/*******************************************************************************
*
@@ -603,7 +603,6 @@ EXPORT_SYMBOL(acpi_get_devices);
* DESCRIPTION: Attach arbitrary data and handler to a namespace node.
*
******************************************************************************/
-
acpi_status
acpi_attach_data(acpi_handle obj_handle,
acpi_object_handler handler, void *data)
@@ -637,6 +636,8 @@ acpi_attach_data(acpi_handle obj_handle,
return (status);
}
+ACPI_EXPORT_SYMBOL(acpi_attach_data)
+
/*******************************************************************************
*
* FUNCTION: acpi_detach_data
@@ -649,7 +650,6 @@ acpi_attach_data(acpi_handle obj_handle,
* DESCRIPTION: Remove data that was previously attached to a node.
*
******************************************************************************/
-
acpi_status
acpi_detach_data(acpi_handle obj_handle, acpi_object_handler handler)
{
@@ -682,6 +682,8 @@ acpi_detach_data(acpi_handle obj_handle, acpi_object_handler handler)
return (status);
}
+ACPI_EXPORT_SYMBOL(acpi_detach_data)
+
/*******************************************************************************
*
* FUNCTION: acpi_get_data
@@ -695,7 +697,6 @@ acpi_detach_data(acpi_handle obj_handle, acpi_object_handler handler)
* DESCRIPTION: Retrieve data that was previously attached to a namespace node.
*
******************************************************************************/
-
acpi_status
acpi_get_data(acpi_handle obj_handle, acpi_object_handler handler, void **data)
{
@@ -727,3 +728,5 @@ acpi_get_data(acpi_handle obj_handle, acpi_object_handler handler, void **data)
(void)acpi_ut_release_mutex(ACPI_MTX_NAMESPACE);
return (status);
}
+
+ACPI_EXPORT_SYMBOL(acpi_get_data)
diff --git a/drivers/acpi/namespace/nsxfname.c b/drivers/acpi/namespace/nsxfname.c
index 8cd8675a47c..978213a6c19 100644
--- a/drivers/acpi/namespace/nsxfname.c
+++ b/drivers/acpi/namespace/nsxfname.c
@@ -42,8 +42,6 @@
* POSSIBILITY OF SUCH DAMAGES.
*/
-#include <linux/module.h>
-
#include <acpi/acpi.h>
#include <acpi/acnamesp.h>
@@ -114,9 +112,8 @@ acpi_get_handle(acpi_handle parent,
/*
* Find the Node and convert to a handle
*/
- status =
- acpi_ns_get_node_by_path(pathname, prefix_node, ACPI_NS_NO_UPSEARCH,
- &node);
+ status = acpi_ns_get_node(prefix_node, pathname, ACPI_NS_NO_UPSEARCH,
+ &node);
*ret_handle = NULL;
if (ACPI_SUCCESS(status)) {
@@ -126,7 +123,7 @@ acpi_get_handle(acpi_handle parent,
return (status);
}
-EXPORT_SYMBOL(acpi_get_handle);
+ACPI_EXPORT_SYMBOL(acpi_get_handle)
/******************************************************************************
*
@@ -143,7 +140,6 @@ EXPORT_SYMBOL(acpi_get_handle);
* complementary functions.
*
******************************************************************************/
-
acpi_status
acpi_get_name(acpi_handle handle, u32 name_type, struct acpi_buffer * buffer)
{
@@ -162,6 +158,7 @@ acpi_get_name(acpi_handle handle, u32 name_type, struct acpi_buffer * buffer)
}
if (name_type == ACPI_FULL_PATHNAME) {
+
/* Get the full pathname (From the namespace root) */
status = acpi_ns_handle_to_pathname(handle, buffer);
@@ -203,7 +200,7 @@ acpi_get_name(acpi_handle handle, u32 name_type, struct acpi_buffer * buffer)
return (status);
}
-EXPORT_SYMBOL(acpi_get_name);
+ACPI_EXPORT_SYMBOL(acpi_get_name)
/******************************************************************************
*
@@ -219,7 +216,6 @@ EXPORT_SYMBOL(acpi_get_name);
* control methods (Such as in the case of a device.)
*
******************************************************************************/
-
acpi_status
acpi_get_object_info(acpi_handle handle, struct acpi_buffer * buffer)
{
@@ -241,7 +237,7 @@ acpi_get_object_info(acpi_handle handle, struct acpi_buffer * buffer)
return (status);
}
- info = ACPI_MEM_CALLOCATE(sizeof(struct acpi_device_info));
+ info = ACPI_ALLOCATE_ZEROED(sizeof(struct acpi_device_info));
if (!info) {
return (AE_NO_MEMORY);
}
@@ -345,11 +341,11 @@ acpi_get_object_info(acpi_handle handle, struct acpi_buffer * buffer)
}
cleanup:
- ACPI_MEM_FREE(info);
+ ACPI_FREE(info);
if (cid_list) {
- ACPI_MEM_FREE(cid_list);
+ ACPI_FREE(cid_list);
}
return (status);
}
-EXPORT_SYMBOL(acpi_get_object_info);
+ACPI_EXPORT_SYMBOL(acpi_get_object_info)
diff --git a/drivers/acpi/namespace/nsxfobj.c b/drivers/acpi/namespace/nsxfobj.c
index a0332595677..a163e1d3708 100644
--- a/drivers/acpi/namespace/nsxfobj.c
+++ b/drivers/acpi/namespace/nsxfobj.c
@@ -42,8 +42,6 @@
* POSSIBILITY OF SUCH DAMAGES.
*/
-#include <linux/module.h>
-
#include <acpi/acpi.h>
#include <acpi/acnamesp.h>
@@ -101,7 +99,7 @@ acpi_status acpi_get_type(acpi_handle handle, acpi_object_type * ret_type)
return (status);
}
-EXPORT_SYMBOL(acpi_get_type);
+ACPI_EXPORT_SYMBOL(acpi_get_type)
/*******************************************************************************
*
@@ -116,7 +114,6 @@ EXPORT_SYMBOL(acpi_get_type);
* Handle.
*
******************************************************************************/
-
acpi_status acpi_get_parent(acpi_handle handle, acpi_handle * ret_handle)
{
struct acpi_namespace_node *node;
@@ -162,7 +159,7 @@ acpi_status acpi_get_parent(acpi_handle handle, acpi_handle * ret_handle)
return (status);
}
-EXPORT_SYMBOL(acpi_get_parent);
+ACPI_EXPORT_SYMBOL(acpi_get_parent)
/*******************************************************************************
*
@@ -181,7 +178,6 @@ EXPORT_SYMBOL(acpi_get_parent);
* Scope is returned.
*
******************************************************************************/
-
acpi_status
acpi_get_next_object(acpi_object_type type,
acpi_handle parent,
@@ -206,6 +202,7 @@ acpi_get_next_object(acpi_object_type type,
/* If null handle, use the parent */
if (!child) {
+
/* Start search at the beginning of the specified scope */
parent_node = acpi_ns_map_handle_to_node(parent);
@@ -242,4 +239,4 @@ acpi_get_next_object(acpi_object_type type,
return (status);
}
-EXPORT_SYMBOL(acpi_get_next_object);
+ACPI_EXPORT_SYMBOL(acpi_get_next_object)
generated by cgit v1.2.3 (git 2.25.1) at 2024-11-27 19:45:45 +0000