acpi_status
acpi_ev_match_gpe_method(acpi_handle obj_handle,
u32 level, void *context, void **return_value)
{
struct acpi_namespace_node *method_node =
ACPI_CAST_PTR(struct acpi_namespace_node, obj_handle);
struct acpi_gpe_walk_info *walk_info =
ACPI_CAST_PTR(struct acpi_gpe_walk_info, context);
struct acpi_gpe_event_info *gpe_event_info;
u32 gpe_number;
char name[ACPI_NAME_SIZE + 1];
u8 type;
ACPI_FUNCTION_TRACE(ev_match_gpe_method);
/* Check if requested owner_id matches this owner_id */
if ((walk_info->execute_by_owner_id) &&
(method_node->owner_id != walk_info->owner_id)) {
return_ACPI_STATUS(AE_OK);
}
/*
* Match and decode the _Lxx and _Exx GPE method names
*
* 1) Extract the method name and null terminate it
*/
ACPI_MOVE_32_TO_32(name, &method_node->name.integer);
name[ACPI_NAME_SIZE] = 0;
/* 2) Name must begin with an underscore */
if (name[0] != '_') {
return_ACPI_STATUS(AE_OK); /* Ignore this method */
}
/*
* 3) Edge/Level determination is based on the 2nd character
* of the method name
*/
switch (name[1]) {
case 'L':
type = ACPI_GPE_LEVEL_TRIGGERED;
break;
case 'E':
type = ACPI_GPE_EDGE_TRIGGERED;
break;
default:
/* Unknown method type, just ignore it */
ACPI_DEBUG_PRINT((ACPI_DB_LOAD,
"Ignoring unknown GPE method type: %s "
"(name not of form _Lxx or _Exx)", name));
return_ACPI_STATUS(AE_OK);
}
/* 4) The last two characters of the name are the hex GPE Number */
gpe_number = ACPI_STRTOUL(&name[2], NULL, 16);
if (gpe_number == ACPI_UINT32_MAX) {
/* Conversion failed; invalid method, just ignore it */
ACPI_DEBUG_PRINT((ACPI_DB_LOAD,
"Could not extract GPE number from name: %s "
"(name is not of form _Lxx or _Exx)", name));
return_ACPI_STATUS(AE_OK);
}
/* Ensure that we have a valid GPE number for this GPE block */
gpe_event_info =
acpi_ev_low_get_gpe_info(gpe_number, walk_info->gpe_block);
if (!gpe_event_info) {
/*
* This gpe_number is not valid for this GPE block, just ignore it.
* However, it may be valid for a different GPE block, since GPE0
* and GPE1 methods both appear under \_GPE.
*/
return_ACPI_STATUS(AE_OK);
}
if ((gpe_event_info->flags & ACPI_GPE_DISPATCH_MASK) ==
ACPI_GPE_DISPATCH_HANDLER) {
/* If there is already a handler, ignore this GPE method */
return_ACPI_STATUS(AE_OK);
}
if ((gpe_event_info->flags & ACPI_GPE_DISPATCH_MASK) ==
ACPI_GPE_DISPATCH_METHOD) {
/*
* If there is already a method, ignore this method. But check
* for a type mismatch (if both the _Lxx AND _Exx exist)
*/
if (type != (gpe_event_info->flags & ACPI_GPE_XRUPT_TYPE_MASK)) {
ACPI_ERROR((AE_INFO,
"For GPE 0x%.2X, found both _L%2.2X and _E%2.2X methods",
gpe_number, gpe_number, gpe_number));
}
return_ACPI_STATUS(AE_OK);
}
/* Disable the GPE in case it's been enabled already. */
(void)acpi_hw_low_set_gpe(gpe_event_info, ACPI_GPE_DISABLE);
/*
* Add the GPE information from above to the gpe_event_info block for
* use during dispatch of this GPE.
*/
gpe_event_info->flags &= ~(ACPI_GPE_DISPATCH_MASK);
gpe_event_info->flags |= (u8)(type | ACPI_GPE_DISPATCH_METHOD);
gpe_event_info->dispatch.method_node = method_node;
ACPI_DEBUG_PRINT((ACPI_DB_LOAD,
"Registered GPE method %s as GPE number 0x%.2X\n",
name, gpe_number));
return_ACPI_STATUS(AE_OK);
}
void
AcpiUtDumpBuffer2 (
UINT8 *Buffer,
UINT32 Count,
UINT32 Display)
{
UINT32 i = 0;
UINT32 j;
UINT32 Temp32;
UINT8 BufChar;
if (!Buffer)
{
AcpiOsPrintf ("Null Buffer Pointer in DumpBuffer!\n");
return;
}
if ((Count < 4) || (Count & 0x01))
{
Display = DB_BYTE_DISPLAY;
}
/* Nasty little dump buffer routine! */
while (i < Count)
{
/* Print current offset */
AcpiOsPrintf ("%6.4X: ", i);
/* Print 16 hex chars */
for (j = 0; j < 16;)
{
if (i + j >= Count)
{
/* Dump fill spaces */
AcpiOsPrintf ("%*s", ((Display * 2) + 1), " ");
j += Display;
continue;
}
switch (Display)
{
case DB_BYTE_DISPLAY:
default: /* Default is BYTE display */
AcpiOsPrintf ("%02X ", Buffer[(ACPI_SIZE) i + j]);
break;
case DB_WORD_DISPLAY:
ACPI_MOVE_16_TO_32 (&Temp32, &Buffer[(ACPI_SIZE) i + j]);
AcpiOsPrintf ("%04X ", Temp32);
break;
case DB_DWORD_DISPLAY:
ACPI_MOVE_32_TO_32 (&Temp32, &Buffer[(ACPI_SIZE) i + j]);
AcpiOsPrintf ("%08X ", Temp32);
break;
case DB_QWORD_DISPLAY:
ACPI_MOVE_32_TO_32 (&Temp32, &Buffer[(ACPI_SIZE) i + j]);
AcpiOsPrintf ("%08X", Temp32);
ACPI_MOVE_32_TO_32 (&Temp32, &Buffer[(ACPI_SIZE) i + j + 4]);
AcpiOsPrintf ("%08X ", Temp32);
break;
}
j += Display;
}
/*
* Print the ASCII equivalent characters but watch out for the bad
* unprintable ones (printable chars are 0x20 through 0x7E)
*/
AcpiOsPrintf (" ");
for (j = 0; j < 16; j++)
{
if (i + j >= Count)
{
AcpiOsPrintf ("\n");
return;
}
BufChar = Buffer[(ACPI_SIZE) i + j];
if (ACPI_IS_PRINT (BufChar))
{
AcpiOsPrintf ("%c", BufChar);
}
else
{
AcpiOsPrintf (".");
}
}
/* Done with that line. */
AcpiOsPrintf ("\n");
i += 16;
}
return;
}
union acpi_parse_object *
acpi_ps_get_next_field (
struct acpi_parse_state *parser_state)
{
u32 aml_offset = (u32) ACPI_PTR_DIFF (parser_state->aml,
parser_state->aml_start);
union acpi_parse_object *field;
u16 opcode;
u32 name;
ACPI_FUNCTION_TRACE ("ps_get_next_field");
/* determine field type */
switch (ACPI_GET8 (parser_state->aml)) {
default:
opcode = AML_INT_NAMEDFIELD_OP;
break;
case 0x00:
opcode = AML_INT_RESERVEDFIELD_OP;
parser_state->aml++;
break;
case 0x01:
opcode = AML_INT_ACCESSFIELD_OP;
parser_state->aml++;
break;
}
/* Allocate a new field op */
field = acpi_ps_alloc_op (opcode);
if (!field) {
return_PTR (NULL);
}
field->common.aml_offset = aml_offset;
/* Decode the field type */
switch (opcode) {
case AML_INT_NAMEDFIELD_OP:
/* Get the 4-character name */
ACPI_MOVE_32_TO_32 (&name, parser_state->aml);
acpi_ps_set_name (field, name);
parser_state->aml += ACPI_NAME_SIZE;
/* Get the length which is encoded as a package length */
field->common.value.size = acpi_ps_get_next_package_length (parser_state);
break;
case AML_INT_RESERVEDFIELD_OP:
/* Get the length which is encoded as a package length */
field->common.value.size = acpi_ps_get_next_package_length (parser_state);
break;
case AML_INT_ACCESSFIELD_OP:
/*
* Get access_type and access_attrib and merge into the field Op
* access_type is first operand, access_attribute is second
*/
field->common.value.integer = (ACPI_GET8 (parser_state->aml) << 8);
parser_state->aml++;
field->common.value.integer |= ACPI_GET8 (parser_state->aml);
parser_state->aml++;
break;
default:
/* Opcode was set in previous switch */
break;
}
return_PTR (field);
}
acpi_status
acpi_ns_lookup(union acpi_generic_state *scope_info,
char *pathname,
acpi_object_type type,
acpi_interpreter_mode interpreter_mode,
u32 flags,
struct acpi_walk_state *walk_state,
struct acpi_namespace_node **return_node)
{
acpi_status status;
char *path = pathname;
struct acpi_namespace_node *prefix_node;
struct acpi_namespace_node *current_node = NULL;
struct acpi_namespace_node *this_node = NULL;
u32 num_segments;
u32 num_carats;
acpi_name simple_name;
acpi_object_type type_to_check_for;
acpi_object_type this_search_type;
u32 search_parent_flag = ACPI_NS_SEARCH_PARENT;
u32 local_flags;
ACPI_FUNCTION_TRACE(ns_lookup);
if (!return_node) {
return_ACPI_STATUS(AE_BAD_PARAMETER);
}
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);
}
if ((!scope_info) || (!scope_info->scope.node)) {
ACPI_DEBUG_PRINT((ACPI_DB_NAMES,
"Null scope prefix, using root node (%p)\n",
acpi_gbl_root_node));
prefix_node = acpi_gbl_root_node;
} else {
prefix_node = scope_info->scope.node;
if (ACPI_GET_DESCRIPTOR_TYPE(prefix_node) !=
ACPI_DESC_TYPE_NAMED) {
ACPI_ERROR((AE_INFO, "%p is not a namespace node [%s]",
prefix_node,
acpi_ut_get_descriptor_name(prefix_node)));
return_ACPI_STATUS(AE_AML_INTERNAL);
}
if (!(flags & ACPI_NS_PREFIX_IS_SCOPE)) {
while (!acpi_ns_opens_scope(prefix_node->type) &&
prefix_node->type != ACPI_TYPE_ANY) {
prefix_node =
acpi_ns_get_parent_node(prefix_node);
}
}
}
type_to_check_for = type;
if (!pathname) {
num_segments = 0;
this_node = acpi_gbl_root_node;
path = "";
ACPI_DEBUG_PRINT((ACPI_DB_NAMES,
"Null Pathname (Zero segments), Flags=%X\n",
flags));
} else {
if (*path == (u8) AML_ROOT_PREFIX) {
this_node = acpi_gbl_root_node;
search_parent_flag = ACPI_NS_NO_UPSEARCH;
path++;
ACPI_DEBUG_PRINT((ACPI_DB_NAMES,
"Path is absolute from root [%p]\n",
this_node));
} else {
ACPI_DEBUG_PRINT((ACPI_DB_NAMES,
"Searching relative to prefix scope [%4.4s] (%p)\n",
acpi_ut_get_node_name(prefix_node),
prefix_node));
this_node = prefix_node;
num_carats = 0;
while (*path == (u8) AML_PARENT_PREFIX) {
search_parent_flag = ACPI_NS_NO_UPSEARCH;
path++;
num_carats++;
this_node = acpi_ns_get_parent_node(this_node);
if (!this_node) {
ACPI_ERROR((AE_INFO,
"ACPI path has too many parent prefixes (^) "
"- reached beyond root node"));
return_ACPI_STATUS(AE_NOT_FOUND);
}
}
if (search_parent_flag == ACPI_NS_NO_UPSEARCH) {
ACPI_DEBUG_PRINT((ACPI_DB_NAMES,
"Search scope is [%4.4s], path has %d carat(s)\n",
acpi_ut_get_node_name
(this_node), num_carats));
}
}
switch (*path) {
case 0:
num_segments = 0;
type = this_node->type;
ACPI_DEBUG_PRINT((ACPI_DB_NAMES,
"Prefix-only Pathname (Zero name segments), Flags=%X\n",
flags));
break;
case AML_DUAL_NAME_PREFIX:
search_parent_flag = ACPI_NS_NO_UPSEARCH;
num_segments = 2;
path++;
ACPI_DEBUG_PRINT((ACPI_DB_NAMES,
"Dual Pathname (2 segments, Flags=%X)\n",
flags));
break;
case AML_MULTI_NAME_PREFIX_OP:
search_parent_flag = ACPI_NS_NO_UPSEARCH;
path++;
num_segments = (u32) (u8) * path;
path++;
ACPI_DEBUG_PRINT((ACPI_DB_NAMES,
"Multi Pathname (%d Segments, Flags=%X)\n",
num_segments, flags));
break;
default:
num_segments = 1;
ACPI_DEBUG_PRINT((ACPI_DB_NAMES,
"Simple Pathname (1 segment, Flags=%X)\n",
flags));
break;
}
ACPI_DEBUG_EXEC(acpi_ns_print_pathname(num_segments, path));
}
this_search_type = ACPI_TYPE_ANY;
current_node = this_node;
while (num_segments && current_node) {
num_segments--;
if (!num_segments) {
this_search_type = type;
if ((search_parent_flag != ACPI_NS_NO_UPSEARCH) &&
(flags & ACPI_NS_SEARCH_PARENT)) {
local_flags |= ACPI_NS_SEARCH_PARENT;
}
if (flags & ACPI_NS_ERROR_IF_FOUND) {
local_flags |= ACPI_NS_ERROR_IF_FOUND;
}
}
ACPI_MOVE_32_TO_32(&simple_name, path);
status =
acpi_ns_search_and_enter(simple_name, walk_state,
current_node, interpreter_mode,
this_search_type, local_flags,
&this_node);
if (ACPI_FAILURE(status)) {
if (status == AE_NOT_FOUND) {
ACPI_DEBUG_PRINT((ACPI_DB_NAMES,
"Name [%4.4s] not found in scope [%4.4s] %p\n",
(char *)&simple_name,
(char *)¤t_node->name,
current_node));
}
*return_node = this_node;
return_ACPI_STATUS(status);
}
if (num_segments > 0) {
if (this_node->type == ACPI_TYPE_LOCAL_ALIAS) {
if (!this_node->object) {
return_ACPI_STATUS(AE_NOT_EXIST);
}
if (acpi_ns_opens_scope
(((struct acpi_namespace_node *)
this_node->object)->type)) {
this_node =
(struct acpi_namespace_node *)
this_node->object;
}
}
}
else {
if ((type_to_check_for != ACPI_TYPE_ANY) &&
(type_to_check_for != ACPI_TYPE_LOCAL_ALIAS) &&
(type_to_check_for != ACPI_TYPE_LOCAL_METHOD_ALIAS)
&& (type_to_check_for != ACPI_TYPE_LOCAL_SCOPE)
&& (this_node->type != ACPI_TYPE_ANY)
&& (this_node->type != type_to_check_for)) {
ACPI_WARNING((AE_INFO,
"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
(type_to_check_for)));
}
if (type == ACPI_TYPE_ANY) {
type = this_node->type;
}
}
path += ACPI_NAME_SIZE;
current_node = this_node;
}
ACPI_STATUS
AcpiNsLookup (
ACPI_GENERIC_STATE *ScopeInfo,
char *Pathname,
ACPI_OBJECT_TYPE Type,
ACPI_INTERPRETER_MODE InterpreterMode,
UINT32 Flags,
ACPI_WALK_STATE *WalkState,
ACPI_NAMESPACE_NODE **ReturnNode)
{
ACPI_STATUS Status;
char *Path = Pathname;
ACPI_NAMESPACE_NODE *PrefixNode;
ACPI_NAMESPACE_NODE *CurrentNode = NULL;
ACPI_NAMESPACE_NODE *ThisNode = NULL;
UINT32 NumSegments;
UINT32 NumCarats;
ACPI_NAME SimpleName;
ACPI_OBJECT_TYPE TypeToCheckFor;
ACPI_OBJECT_TYPE ThisSearchType;
UINT32 SearchParentFlag = ACPI_NS_SEARCH_PARENT;
UINT32 LocalFlags;
ACPI_FUNCTION_TRACE (NsLookup);
if (!ReturnNode)
{
return_ACPI_STATUS (AE_BAD_PARAMETER);
}
LocalFlags = Flags & ~(ACPI_NS_ERROR_IF_FOUND | ACPI_NS_SEARCH_PARENT);
*ReturnNode = ACPI_ENTRY_NOT_FOUND;
AcpiGbl_NsLookupCount++;
if (!AcpiGbl_RootNode)
{
return_ACPI_STATUS (AE_NO_NAMESPACE);
}
/* Get the prefix scope. A null scope means use the root scope */
if ((!ScopeInfo) ||
(!ScopeInfo->Scope.Node))
{
ACPI_DEBUG_PRINT ((ACPI_DB_NAMES,
"Null scope prefix, using root node (%p)\n",
AcpiGbl_RootNode));
PrefixNode = AcpiGbl_RootNode;
}
else
{
PrefixNode = ScopeInfo->Scope.Node;
if (ACPI_GET_DESCRIPTOR_TYPE (PrefixNode) != ACPI_DESC_TYPE_NAMED)
{
ACPI_ERROR ((AE_INFO, "%p is not a namespace node [%s]",
PrefixNode, AcpiUtGetDescriptorName (PrefixNode)));
return_ACPI_STATUS (AE_AML_INTERNAL);
}
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 (!AcpiNsOpensScope (PrefixNode->Type) &&
PrefixNode->Type != ACPI_TYPE_ANY)
{
PrefixNode = PrefixNode->Parent;
}
}
}
/* Save type. TBD: may be no longer necessary */
TypeToCheckFor = Type;
/*
* Begin examination of the actual pathname
*/
if (!Pathname)
{
/* A Null NamePath is allowed and refers to the root */
NumSegments = 0;
ThisNode = AcpiGbl_RootNode;
Path = "";
ACPI_DEBUG_PRINT ((ACPI_DB_NAMES,
"Null Pathname (Zero segments), Flags=%X\n", Flags));
}
else
{
/*
* Name pointer is valid (and must be in internal name format)
*
* Check for scope prefixes:
*
* As represented in the AML stream, a namepath consists of an
* optional scope prefix followed by a name segment part.
*
* If present, the scope prefix is either a Root Prefix (in
* which case the name is fully qualified), or one or more
* Parent Prefixes (in which case the name's scope is relative
* to the current scope).
*/
if (*Path == (UINT8) AML_ROOT_PREFIX)
{
/* Pathname is fully qualified, start from the root */
ThisNode = AcpiGbl_RootNode;
SearchParentFlag = ACPI_NS_NO_UPSEARCH;
/* Point to name segment part */
Path++;
ACPI_DEBUG_PRINT ((ACPI_DB_NAMES,
"Path is absolute from root [%p]\n", ThisNode));
}
else
{
/* Pathname is relative to current scope, start there */
ACPI_DEBUG_PRINT ((ACPI_DB_NAMES,
"Searching relative to prefix scope [%4.4s] (%p)\n",
AcpiUtGetNodeName (PrefixNode), PrefixNode));
/*
* Handle multiple Parent Prefixes (carat) by just getting
* the parent node for each prefix instance.
*/
ThisNode = PrefixNode;
NumCarats = 0;
while (*Path == (UINT8) AML_PARENT_PREFIX)
{
/* Name is fully qualified, no search rules apply */
SearchParentFlag = ACPI_NS_NO_UPSEARCH;
/*
* Point past this prefix to the name segment
* part or the next Parent Prefix
*/
Path++;
/* Backup to the parent node */
NumCarats++;
ThisNode = ThisNode->Parent;
if (!ThisNode)
{
/* Current scope has no parent scope */
ACPI_ERROR ((AE_INFO,
"%s: Path has too many parent prefixes (^) "
"- reached beyond root node", Pathname));
return_ACPI_STATUS (AE_NOT_FOUND);
}
}
if (SearchParentFlag == ACPI_NS_NO_UPSEARCH)
{
ACPI_DEBUG_PRINT ((ACPI_DB_NAMES,
"Search scope is [%4.4s], path has %u carat(s)\n",
AcpiUtGetNodeName (ThisNode), NumCarats));
}
}
/*
* Determine the number of ACPI name segments in this pathname.
*
* The segment part consists of either:
* - A Null name segment (0)
* - A DualNamePrefix followed by two 4-byte name segments
* - A MultiNamePrefix followed by a byte indicating the
* number of segments and the segments themselves.
* - A single 4-byte name segment
*
* Examine the name prefix opcode, if any, to determine the number of
* segments.
*/
switch (*Path)
{
case 0:
/*
* Null name after a root or parent prefixes. We already
* have the correct target node and there are no name segments.
*/
NumSegments = 0;
Type = ThisNode->Type;
ACPI_DEBUG_PRINT ((ACPI_DB_NAMES,
"Prefix-only Pathname (Zero name segments), Flags=%X\n",
Flags));
break;
case AML_DUAL_NAME_PREFIX:
/* More than one NameSeg, search rules do not apply */
SearchParentFlag = ACPI_NS_NO_UPSEARCH;
/* Two segments, point to first name segment */
NumSegments = 2;
Path++;
ACPI_DEBUG_PRINT ((ACPI_DB_NAMES,
"Dual Pathname (2 segments, Flags=%X)\n", Flags));
break;
case AML_MULTI_NAME_PREFIX_OP:
/* More than one NameSeg, search rules do not apply */
SearchParentFlag = ACPI_NS_NO_UPSEARCH;
/* Extract segment count, point to first name segment */
Path++;
NumSegments = (UINT32) (UINT8) *Path;
Path++;
ACPI_DEBUG_PRINT ((ACPI_DB_NAMES,
"Multi Pathname (%u Segments, Flags=%X)\n",
NumSegments, Flags));
break;
default:
/*
* Not a Null name, no Dual or Multi prefix, hence there is
* only one name segment and Pathname is already pointing to it.
*/
NumSegments = 1;
ACPI_DEBUG_PRINT ((ACPI_DB_NAMES,
"Simple Pathname (1 segment, Flags=%X)\n", Flags));
break;
}
ACPI_DEBUG_EXEC (AcpiNsPrintPathname (NumSegments, Path));
}
/*
* Search namespace for each segment of the name. Loop through and
* verify (or add to the namespace) each name segment.
*
* The object type is significant only at the last name
* segment. (We don't care about the types along the path, only
* the type of the final target object.)
*/
ThisSearchType = ACPI_TYPE_ANY;
CurrentNode = ThisNode;
while (NumSegments && CurrentNode)
{
NumSegments--;
if (!NumSegments)
{
/* This is the last segment, enable typechecking */
ThisSearchType = Type;
/*
* Only allow automatic parent search (search rules) if the caller
* requested it AND we have a single, non-fully-qualified NameSeg
*/
if ((SearchParentFlag != ACPI_NS_NO_UPSEARCH) &&
(Flags & ACPI_NS_SEARCH_PARENT))
{
LocalFlags |= ACPI_NS_SEARCH_PARENT;
}
/* Set error flag according to caller */
if (Flags & ACPI_NS_ERROR_IF_FOUND)
{
LocalFlags |= ACPI_NS_ERROR_IF_FOUND;
}
}
/* Extract one ACPI name from the front of the pathname */
ACPI_MOVE_32_TO_32 (&SimpleName, Path);
/* Try to find the single (4 character) ACPI name */
Status = AcpiNsSearchAndEnter (SimpleName, WalkState, CurrentNode,
InterpreterMode, ThisSearchType, LocalFlags, &ThisNode);
if (ACPI_FAILURE (Status))
{
if (Status == AE_NOT_FOUND)
{
/* Name not found in ACPI namespace */
ACPI_DEBUG_PRINT ((ACPI_DB_NAMES,
"Name [%4.4s] not found in scope [%4.4s] %p\n",
(char *) &SimpleName, (char *) &CurrentNode->Name,
CurrentNode));
}
*ReturnNode = ThisNode;
return_ACPI_STATUS (Status);
}
/* More segments to follow? */
if (NumSegments > 0)
{
/*
* If we have an alias to an object that opens a scope (such as a
* device or processor), we need to dereference the alias here so
* that we can access any children of the original node (via the
* remaining segments).
*/
if (ThisNode->Type == ACPI_TYPE_LOCAL_ALIAS)
{
if (!ThisNode->Object)
{
return_ACPI_STATUS (AE_NOT_EXIST);
}
if (AcpiNsOpensScope (((ACPI_NAMESPACE_NODE *)
ThisNode->Object)->Type))
{
ThisNode = (ACPI_NAMESPACE_NODE *) ThisNode->Object;
}
}
}
/* Special handling for the last segment (NumSegments == 0) */
else
{
/*
* Sanity typecheck of the target object:
*
* If 1) This is the last segment (NumSegments == 0)
* 2) And we are looking for a specific type
* (Not checking for TYPE_ANY)
* 3) Which is not an alias
* 4) Which is not a local type (TYPE_SCOPE)
* 5) And the type of target object is known (not TYPE_ANY)
* 6) And target object does not match what we are looking for
*
* Then we have a type mismatch. Just warn and ignore it.
*/
if ((TypeToCheckFor != ACPI_TYPE_ANY) &&
(TypeToCheckFor != ACPI_TYPE_LOCAL_ALIAS) &&
(TypeToCheckFor != ACPI_TYPE_LOCAL_METHOD_ALIAS) &&
(TypeToCheckFor != ACPI_TYPE_LOCAL_SCOPE) &&
(ThisNode->Type != ACPI_TYPE_ANY) &&
(ThisNode->Type != TypeToCheckFor))
{
/* Complain about a type mismatch */
ACPI_WARNING ((AE_INFO,
"NsLookup: Type mismatch on %4.4s (%s), searching for (%s)",
ACPI_CAST_PTR (char, &SimpleName),
AcpiUtGetTypeName (ThisNode->Type),
AcpiUtGetTypeName (TypeToCheckFor)));
}
/*
* If this is the last name segment and we are not looking for a
* specific type, but the type of found object is known, use that
* type to (later) see if it opens a scope.
*/
if (Type == ACPI_TYPE_ANY)
{
Type = ThisNode->Type;
}
}
/* Point to next name segment and make this node current */
Path += ACPI_NAME_SIZE;
CurrentNode = ThisNode;
}
acpi_status
acpi_rs_memory32_range_resource (
u8 *byte_stream_buffer,
acpi_size *bytes_consumed,
u8 **output_buffer,
acpi_size *structure_size)
{
u8 *buffer = byte_stream_buffer;
struct acpi_resource *output_struct = (void *) *output_buffer;
u16 temp16 = 0;
u8 temp8 = 0;
acpi_size struct_size = ACPI_SIZEOF_RESOURCE (struct acpi_resource_mem32);
ACPI_FUNCTION_TRACE ("rs_memory32_range_resource");
/*
* Point past the Descriptor to get the number of bytes consumed
*/
buffer += 1;
ACPI_MOVE_16_TO_16 (&temp16, buffer);
buffer += 2;
*bytes_consumed = (acpi_size) temp16 + 3;
output_struct->id = ACPI_RSTYPE_MEM32;
/*
* Point to the place in the output buffer where the data portion will
* begin.
* 1. Set the RESOURCE_DATA * Data to point to its own address, then
* 2. Set the pointer to the next address.
*
* NOTE: output_struct->Data is cast to u8, otherwise, this addition adds
* 4 * sizeof(RESOURCE_DATA) instead of 4 * sizeof(u8)
*/
/*
* Check Byte 3 the Read/Write bit
*/
temp8 = *buffer;
buffer += 1;
output_struct->data.memory32.read_write_attribute = temp8 & 0x01;
/*
* Get min_base_address (Bytes 4-7)
*/
ACPI_MOVE_32_TO_32 (&output_struct->data.memory32.min_base_address, buffer);
buffer += 4;
/*
* Get max_base_address (Bytes 8-11)
*/
ACPI_MOVE_32_TO_32 (&output_struct->data.memory32.max_base_address, buffer);
buffer += 4;
/*
* Get Alignment (Bytes 12-15)
*/
ACPI_MOVE_32_TO_32 (&output_struct->data.memory32.alignment, buffer);
buffer += 4;
/*
* Get range_length (Bytes 16-19)
*/
ACPI_MOVE_32_TO_32 (&output_struct->data.memory32.range_length, buffer);
/*
* Set the Length parameter
*/
output_struct->length = (u32) struct_size;
/*
* Return the final size of the structure
*/
*structure_size = struct_size;
return_ACPI_STATUS (AE_OK);
}
ACPI_STATUS
AdGetLocalTables (
char *Filename,
BOOLEAN GetAllTables)
{
ACPI_STATUS Status;
ACPI_TABLE_HEADER TableHeader;
ACPI_TABLE_HEADER *NewTable;
UINT32 NumTables;
UINT32 PointerSize;
UINT32 TableIndex;
if (GetAllTables)
{
ACPI_MOVE_32_TO_32 (TableHeader.Signature, ACPI_SIG_RSDT);
AcpiOsTableOverride (&TableHeader, &NewTable);
if (!NewTable)
{
fprintf (stderr, "Could not obtain RSDT\n");
return AE_NO_ACPI_TABLES;
}
else
{
AdWriteTable (NewTable, NewTable->Length,
ACPI_SIG_RSDT, NewTable->OemTableId);
}
if (ACPI_COMPARE_NAME (NewTable->Signature, ACPI_SIG_RSDT))
{
PointerSize = sizeof (UINT32);
}
else
{
PointerSize = sizeof (UINT64);
}
/*
* Determine the number of tables pointed to by the RSDT/XSDT.
* This is defined by the ACPI Specification to be the number of
* pointers contained within the RSDT/XSDT. The size of the pointers
* is architecture-dependent.
*/
NumTables = (NewTable->Length - sizeof (ACPI_TABLE_HEADER)) / PointerSize;
AcpiOsPrintf ("There are %u tables defined in the %4.4s\n\n",
NumTables, NewTable->Signature);
/* Get the FADT */
ACPI_MOVE_32_TO_32 (TableHeader.Signature, ACPI_SIG_FADT);
AcpiOsTableOverride (&TableHeader, &NewTable);
if (NewTable)
{
AdWriteTable (NewTable, NewTable->Length,
ACPI_SIG_FADT, NewTable->OemTableId);
}
AcpiOsPrintf ("\n");
/* Don't bother with FACS, it is usually all zeros */
}
/* Always get the DSDT */
ACPI_MOVE_32_TO_32 (TableHeader.Signature, ACPI_SIG_DSDT);
AcpiOsTableOverride (&TableHeader, &NewTable);
if (NewTable)
{
AdWriteTable (NewTable, NewTable->Length,
ACPI_SIG_DSDT, NewTable->OemTableId);
/* Store DSDT in the Table Manager */
Status = AcpiTbStoreTable (0, NewTable, NewTable->Length,
0, &TableIndex);
if (ACPI_FAILURE (Status))
{
fprintf (stderr, "Could not store DSDT\n");
return AE_NO_ACPI_TABLES;
}
}
else
{
fprintf (stderr, "Could not obtain DSDT\n");
return AE_NO_ACPI_TABLES;
}
#if 0
/* TBD: Future implementation */
AcpiOsPrintf ("\n");
/* Get all SSDTs */
ACPI_MOVE_32_TO_32 (TableHeader.Signature, ACPI_SIG_SSDT);
do
{
NewTable = NULL;
Status = AcpiOsTableOverride (&TableHeader, &NewTable);
} while (NewTable);
#endif
return AE_OK;
}
UINT8 *
AcpiDbEncodePldBuffer (
ACPI_PLD_INFO *PldInfo)
{
UINT32 *Buffer;
UINT32 Dword;
Buffer = ACPI_ALLOCATE_ZEROED (ACPI_PLD_BUFFER_SIZE);
if (!Buffer)
{
return (NULL);
}
/* First 32 bits */
Dword = 0;
ACPI_PLD_SET_REVISION (&Dword, PldInfo->Revision);
ACPI_PLD_SET_IGNORE_COLOR (&Dword, PldInfo->IgnoreColor);
ACPI_PLD_SET_COLOR (&Dword, PldInfo->Color);
ACPI_MOVE_32_TO_32 (&Buffer[0], &Dword);
/* Second 32 bits */
Dword = 0;
ACPI_PLD_SET_WIDTH (&Dword, PldInfo->Width);
ACPI_PLD_SET_HEIGHT (&Dword, PldInfo->Height);
ACPI_MOVE_32_TO_32 (&Buffer[1], &Dword);
/* Third 32 bits */
Dword = 0;
ACPI_PLD_SET_USER_VISIBLE (&Dword, PldInfo->UserVisible);
ACPI_PLD_SET_DOCK (&Dword, PldInfo->Dock);
ACPI_PLD_SET_LID (&Dword, PldInfo->Lid);
ACPI_PLD_SET_PANEL (&Dword, PldInfo->Panel);
ACPI_PLD_SET_VERTICAL (&Dword, PldInfo->VerticalPosition);
ACPI_PLD_SET_HORIZONTAL (&Dword, PldInfo->HorizontalPosition);
ACPI_PLD_SET_SHAPE (&Dword, PldInfo->Shape);
ACPI_PLD_SET_ORIENTATION (&Dword, PldInfo->GroupOrientation);
ACPI_PLD_SET_TOKEN (&Dword, PldInfo->GroupToken);
ACPI_PLD_SET_POSITION (&Dword, PldInfo->GroupPosition);
ACPI_PLD_SET_BAY (&Dword, PldInfo->Bay);
ACPI_MOVE_32_TO_32 (&Buffer[2], &Dword);
/* Fourth 32 bits */
Dword = 0;
ACPI_PLD_SET_EJECTABLE (&Dword, PldInfo->Ejectable);
ACPI_PLD_SET_OSPM_EJECT (&Dword, PldInfo->OspmEjectRequired);
ACPI_PLD_SET_CABINET (&Dword, PldInfo->CabinetNumber);
ACPI_PLD_SET_CARD_CAGE (&Dword, PldInfo->CardCageNumber);
ACPI_PLD_SET_REFERENCE (&Dword, PldInfo->Reference);
ACPI_PLD_SET_ROTATION (&Dword, PldInfo->Rotation);
ACPI_PLD_SET_ORDER (&Dword, PldInfo->Order);
ACPI_MOVE_32_TO_32 (&Buffer[3], &Dword);
if (PldInfo->Revision >= 2)
{
/* Fifth 32 bits */
Dword = 0;
ACPI_PLD_SET_VERT_OFFSET (&Dword, PldInfo->VerticalOffset);
ACPI_PLD_SET_HORIZ_OFFSET (&Dword, PldInfo->HorizontalOffset);
ACPI_MOVE_32_TO_32 (&Buffer[4], &Dword);
}
return (ACPI_CAST_PTR (UINT8, Buffer));
}
void
AcpiRsMoveData (
void *Destination,
void *Source,
UINT16 ItemCount,
UINT8 MoveType)
{
UINT32 i;
ACPI_FUNCTION_ENTRY ();
/* One move per item */
for (i = 0; i < ItemCount; i++)
{
switch (MoveType)
{
/*
* For the 8-bit case, we can perform the move all at once
* since there are no alignment or endian issues
*/
case ACPI_RSC_MOVE8:
case ACPI_RSC_MOVE_GPIO_RES:
case ACPI_RSC_MOVE_SERIAL_VEN:
case ACPI_RSC_MOVE_SERIAL_RES:
memcpy (Destination, Source, ItemCount);
return;
/*
* 16-, 32-, and 64-bit cases must use the move macros that perform
* endian conversion and/or accommodate hardware that cannot perform
* misaligned memory transfers
*/
case ACPI_RSC_MOVE16:
case ACPI_RSC_MOVE_GPIO_PIN:
ACPI_MOVE_16_TO_16 (
&ACPI_CAST_PTR (UINT16, Destination)[i],
&ACPI_CAST_PTR (UINT16, Source)[i]);
break;
case ACPI_RSC_MOVE32:
ACPI_MOVE_32_TO_32 (
&ACPI_CAST_PTR (UINT32, Destination)[i],
&ACPI_CAST_PTR (UINT32, Source)[i]);
break;
case ACPI_RSC_MOVE64:
ACPI_MOVE_64_TO_64 (
&ACPI_CAST_PTR (UINT64, Destination)[i],
&ACPI_CAST_PTR (UINT64, Source)[i]);
break;
default:
return;
}
}
}
u8 *acpi_db_encode_pld_buffer(struct acpi_pld_info *pld_info)
{
u32 *buffer;
u32 dword;
buffer = ACPI_ALLOCATE_ZEROED(ACPI_PLD_BUFFER_SIZE);
if (!buffer) {
return (NULL);
}
/* First 32 bits */
dword = 0;
ACPI_PLD_SET_REVISION(&dword, pld_info->revision);
ACPI_PLD_SET_IGNORE_COLOR(&dword, pld_info->ignore_color);
ACPI_PLD_SET_RED(&dword, pld_info->red);
ACPI_PLD_SET_GREEN(&dword, pld_info->green);
ACPI_PLD_SET_BLUE(&dword, pld_info->blue);
ACPI_MOVE_32_TO_32(&buffer[0], &dword);
/* Second 32 bits */
dword = 0;
ACPI_PLD_SET_WIDTH(&dword, pld_info->width);
ACPI_PLD_SET_HEIGHT(&dword, pld_info->height);
ACPI_MOVE_32_TO_32(&buffer[1], &dword);
/* Third 32 bits */
dword = 0;
ACPI_PLD_SET_USER_VISIBLE(&dword, pld_info->user_visible);
ACPI_PLD_SET_DOCK(&dword, pld_info->dock);
ACPI_PLD_SET_LID(&dword, pld_info->lid);
ACPI_PLD_SET_PANEL(&dword, pld_info->panel);
ACPI_PLD_SET_VERTICAL(&dword, pld_info->vertical_position);
ACPI_PLD_SET_HORIZONTAL(&dword, pld_info->horizontal_position);
ACPI_PLD_SET_SHAPE(&dword, pld_info->shape);
ACPI_PLD_SET_ORIENTATION(&dword, pld_info->group_orientation);
ACPI_PLD_SET_TOKEN(&dword, pld_info->group_token);
ACPI_PLD_SET_POSITION(&dword, pld_info->group_position);
ACPI_PLD_SET_BAY(&dword, pld_info->bay);
ACPI_MOVE_32_TO_32(&buffer[2], &dword);
/* Fourth 32 bits */
dword = 0;
ACPI_PLD_SET_EJECTABLE(&dword, pld_info->ejectable);
ACPI_PLD_SET_OSPM_EJECT(&dword, pld_info->ospm_eject_required);
ACPI_PLD_SET_CABINET(&dword, pld_info->cabinet_number);
ACPI_PLD_SET_CARD_CAGE(&dword, pld_info->card_cage_number);
ACPI_PLD_SET_REFERENCE(&dword, pld_info->reference);
ACPI_PLD_SET_ROTATION(&dword, pld_info->rotation);
ACPI_PLD_SET_ORDER(&dword, pld_info->order);
ACPI_MOVE_32_TO_32(&buffer[3], &dword);
if (pld_info->revision >= 2) {
/* Fifth 32 bits */
dword = 0;
ACPI_PLD_SET_VERT_OFFSET(&dword, pld_info->vertical_offset);
ACPI_PLD_SET_HORIZ_OFFSET(&dword, pld_info->horizontal_offset);
ACPI_MOVE_32_TO_32(&buffer[4], &dword);
}
return (ACPI_CAST_PTR(u8, buffer));
}
void
ApCheckForGpeNameConflict (
ACPI_PARSE_OBJECT *Op)
{
ACPI_PARSE_OBJECT *NextOp;
UINT32 GpeNumber;
char Name[ACPI_NAME_SIZE + 1];
char Target[ACPI_NAME_SIZE];
/* Need a null-terminated string version of NameSeg */
ACPI_MOVE_32_TO_32 (Name, &Op->Asl.NameSeg);
Name[ACPI_NAME_SIZE] = 0;
/*
* For a GPE method:
* 1st char must be underscore
* 2nd char must be L or E
* 3rd/4th chars must be a hex number
*/
if ((Name[0] != '_') ||
((Name[1] != 'L') && (Name[1] != 'E')))
{
return;
}
/* Verify 3rd/4th chars are a valid hex value */
GpeNumber = ACPI_STRTOUL (&Name[2], NULL, 16);
if (GpeNumber == ACPI_UINT32_MAX)
{
return;
}
/*
* We are now sure we have an _Lxx or _Exx.
* Create the target name that would cause collision (Flip E/L)
*/
ACPI_MOVE_32_TO_32 (Target, Name);
/* Inject opposite letter ("L" versus "E") */
if (Name[1] == 'L')
{
Target[1] = 'E';
}
else /* Name[1] == 'E' */
{
Target[1] = 'L';
}
/* Search all peers (objects within this scope) for target match */
NextOp = Op->Asl.Next;
while (NextOp)
{
/*
* We mostly care about methods, but check Name() constructs also,
* even though they will get another error for not being a method.
* All GPE names must be defined as control methods.
*/
if ((NextOp->Asl.ParseOpcode == PARSEOP_METHOD) ||
(NextOp->Asl.ParseOpcode == PARSEOP_NAME))
{
if (ACPI_COMPARE_NAME (Target, NextOp->Asl.NameSeg))
{
/* Found both _Exy and _Lxy in the same scope, error */
AslError (ASL_ERROR, ASL_MSG_GPE_NAME_CONFLICT, NextOp,
Name);
return;
}
}
NextOp = NextOp->Asl.Next;
}
/* OK, no conflict found */
return;
}
ACPI_STATUS
AcpiEvMatchGpeMethod (
ACPI_HANDLE ObjHandle,
UINT32 Level,
void *Context,
void **ReturnValue)
{
ACPI_NAMESPACE_NODE *MethodNode = ACPI_CAST_PTR (ACPI_NAMESPACE_NODE, ObjHandle);
ACPI_GPE_WALK_INFO *WalkInfo = ACPI_CAST_PTR (ACPI_GPE_WALK_INFO, Context);
ACPI_GPE_EVENT_INFO *GpeEventInfo;
ACPI_NAMESPACE_NODE *GpeDevice;
ACPI_STATUS Status;
UINT32 GpeNumber;
char Name[ACPI_NAME_SIZE + 1];
UINT8 Type;
ACPI_FUNCTION_TRACE (EvMatchGpeMethod);
/* Check if requested OwnerId matches this OwnerId */
if ((WalkInfo->ExecuteByOwnerId) &&
(MethodNode->OwnerId != WalkInfo->OwnerId))
{
return_ACPI_STATUS (AE_OK);
}
/*
* Match and decode the _Lxx and _Exx GPE method names
*
* 1) Extract the method name and null terminate it
*/
ACPI_MOVE_32_TO_32 (Name, &MethodNode->Name.Integer);
Name[ACPI_NAME_SIZE] = 0;
/* 2) Name must begin with an underscore */
if (Name[0] != '_')
{
return_ACPI_STATUS (AE_OK); /* Ignore this method */
}
/*
* 3) Edge/Level determination is based on the 2nd character
* of the method name
*
* NOTE: Default GPE type is RUNTIME only. Later, if a _PRW object is
* found that points to this GPE, the ACPI_GPE_CAN_WAKE flag is set.
*/
switch (Name[1])
{
case 'L':
Type = ACPI_GPE_LEVEL_TRIGGERED;
break;
case 'E':
Type = ACPI_GPE_EDGE_TRIGGERED;
break;
default:
/* Unknown method type, just ignore it */
ACPI_DEBUG_PRINT ((ACPI_DB_LOAD,
"Ignoring unknown GPE method type: %s "
"(name not of form _Lxx or _Exx)", Name));
return_ACPI_STATUS (AE_OK);
}
/* 4) The last two characters of the name are the hex GPE Number */
GpeNumber = ACPI_STRTOUL (&Name[2], NULL, 16);
if (GpeNumber == ACPI_UINT32_MAX)
{
/* Conversion failed; invalid method, just ignore it */
ACPI_DEBUG_PRINT ((ACPI_DB_LOAD,
"Could not extract GPE number from name: %s "
"(name is not of form _Lxx or _Exx)", Name));
return_ACPI_STATUS (AE_OK);
}
/* Ensure that we have a valid GPE number for this GPE block */
GpeEventInfo = AcpiEvLowGetGpeInfo (GpeNumber, WalkInfo->GpeBlock);
if (!GpeEventInfo)
{
/*
* This GpeNumber is not valid for this GPE block, just ignore it.
* However, it may be valid for a different GPE block, since GPE0
* and GPE1 methods both appear under \_GPE.
*/
return_ACPI_STATUS (AE_OK);
}
if ((GpeEventInfo->Flags & ACPI_GPE_DISPATCH_MASK) ==
ACPI_GPE_DISPATCH_HANDLER)
{
/* If there is already a handler, ignore this GPE method */
return_ACPI_STATUS (AE_OK);
}
if ((GpeEventInfo->Flags & ACPI_GPE_DISPATCH_MASK) ==
ACPI_GPE_DISPATCH_METHOD)
{
/*
* If there is already a method, ignore this method. But check
* for a type mismatch (if both the _Lxx AND _Exx exist)
*/
if (Type != (GpeEventInfo->Flags & ACPI_GPE_XRUPT_TYPE_MASK))
{
ACPI_ERROR ((AE_INFO,
"For GPE 0x%.2X, found both _L%2.2X and _E%2.2X methods",
GpeNumber, GpeNumber, GpeNumber));
}
return_ACPI_STATUS (AE_OK);
}
/*
* Add the GPE information from above to the GpeEventInfo block for
* use during dispatch of this GPE.
*/
GpeEventInfo->Flags |= (UINT8) (Type | ACPI_GPE_DISPATCH_METHOD);
GpeEventInfo->Dispatch.MethodNode = MethodNode;
/*
* Enable this GPE if requested. This only happens when during the
* execution of a Load or LoadTable operator. We have found a new
* GPE method and want to immediately enable the GPE if it is a
* runtime GPE.
*/
if (WalkInfo->EnableThisGpe)
{
/* Ignore GPEs that can wake the system */
if (!(GpeEventInfo->Flags & ACPI_GPE_CAN_WAKE) ||
!AcpiGbl_LeaveWakeGpesDisabled)
{
WalkInfo->Count++;
GpeDevice = WalkInfo->GpeDevice;
if (GpeDevice == AcpiGbl_FadtGpeDevice)
{
GpeDevice = NULL;
}
Status = AcpiEnableGpe (GpeDevice, GpeNumber,
ACPI_GPE_TYPE_RUNTIME);
if (ACPI_FAILURE (Status))
{
ACPI_EXCEPTION ((AE_INFO, Status,
"Could not enable GPE 0x%02X", GpeNumber));
}
}
}
ACPI_DEBUG_PRINT ((ACPI_DB_LOAD,
"Registered GPE method %s as GPE number 0x%.2X\n",
Name, GpeNumber));
return_ACPI_STATUS (AE_OK);
}
acpi_status
acpi_rs_memory32_range_stream (
struct acpi_resource *linked_list,
u8 **output_buffer,
acpi_size *bytes_consumed)
{
u8 *buffer = *output_buffer;
u16 temp16 = 0;
u8 temp8 = 0;
ACPI_FUNCTION_TRACE ("rs_memory32_range_stream");
/*
* The descriptor field is static
*/
*buffer = 0x85;
buffer += 1;
/*
* The length field is static
*/
temp16 = 0x11;
ACPI_MOVE_16_TO_16 (buffer, &temp16);
buffer += 2;
/*
* Set the Information Byte
*/
temp8 = (u8) (linked_list->data.memory32.read_write_attribute & 0x01);
*buffer = temp8;
buffer += 1;
/*
* Set the Range minimum base address
*/
ACPI_MOVE_32_TO_32 (buffer, &linked_list->data.memory32.min_base_address);
buffer += 4;
/*
* Set the Range maximum base address
*/
ACPI_MOVE_32_TO_32 (buffer, &linked_list->data.memory32.max_base_address);
buffer += 4;
/*
* Set the base alignment
*/
ACPI_MOVE_32_TO_32 (buffer, &linked_list->data.memory32.alignment);
buffer += 4;
/*
* Set the range length
*/
ACPI_MOVE_32_TO_32 (buffer, &linked_list->data.memory32.range_length);
buffer += 4;
/*
* Return the number of bytes consumed in this operation
*/
*bytes_consumed = ACPI_PTR_DIFF (buffer, *output_buffer);
return_ACPI_STATUS (AE_OK);
}
ACPI_STATUS
AcpiDecodePldBuffer (
UINT8 *InBuffer,
ACPI_SIZE Length,
ACPI_PLD_INFO **ReturnBuffer)
{
ACPI_PLD_INFO *PldInfo;
UINT32 *Buffer = ACPI_CAST_PTR (UINT32, InBuffer);
UINT32 Dword;
/* Parameter validation */
if (!InBuffer || !ReturnBuffer || (Length < 16))
{
return (AE_BAD_PARAMETER);
}
PldInfo = ACPI_ALLOCATE_ZEROED (sizeof (ACPI_PLD_INFO));
if (!PldInfo)
{
return (AE_NO_MEMORY);
}
/* First 32-bit DWord */
ACPI_MOVE_32_TO_32 (&Dword, &Buffer[0]);
PldInfo->Revision = ACPI_PLD_GET_REVISION (&Dword);
PldInfo->IgnoreColor = ACPI_PLD_GET_IGNORE_COLOR (&Dword);
PldInfo->Color = ACPI_PLD_GET_COLOR (&Dword);
/* Second 32-bit DWord */
ACPI_MOVE_32_TO_32 (&Dword, &Buffer[1]);
PldInfo->Width = ACPI_PLD_GET_WIDTH (&Dword);
PldInfo->Height = ACPI_PLD_GET_HEIGHT(&Dword);
/* Third 32-bit DWord */
ACPI_MOVE_32_TO_32 (&Dword, &Buffer[2]);
PldInfo->UserVisible = ACPI_PLD_GET_USER_VISIBLE (&Dword);
PldInfo->Dock = ACPI_PLD_GET_DOCK (&Dword);
PldInfo->Lid = ACPI_PLD_GET_LID (&Dword);
PldInfo->Panel = ACPI_PLD_GET_PANEL (&Dword);
PldInfo->VerticalPosition = ACPI_PLD_GET_VERTICAL (&Dword);
PldInfo->HorizontalPosition = ACPI_PLD_GET_HORIZONTAL (&Dword);
PldInfo->Shape = ACPI_PLD_GET_SHAPE (&Dword);
PldInfo->GroupOrientation = ACPI_PLD_GET_ORIENTATION (&Dword);
PldInfo->GroupToken = ACPI_PLD_GET_TOKEN (&Dword);
PldInfo->GroupPosition = ACPI_PLD_GET_POSITION (&Dword);
PldInfo->Bay = ACPI_PLD_GET_BAY (&Dword);
/* Fourth 32-bit DWord */
ACPI_MOVE_32_TO_32 (&Dword, &Buffer[3]);
PldInfo->Ejectable = ACPI_PLD_GET_EJECTABLE (&Dword);
PldInfo->OspmEjectRequired = ACPI_PLD_GET_OSPM_EJECT (&Dword);
PldInfo->CabinetNumber = ACPI_PLD_GET_CABINET (&Dword);
PldInfo->CardCageNumber = ACPI_PLD_GET_CARD_CAGE (&Dword);
PldInfo->Reference = ACPI_PLD_GET_REFERENCE (&Dword);
PldInfo->Rotation = ACPI_PLD_GET_ROTATION (&Dword);
PldInfo->Order = ACPI_PLD_GET_ORDER (&Dword);
if (Length >= ACPI_PLD_BUFFER_SIZE)
{
/* Fifth 32-bit DWord (Revision 2 of _PLD) */
ACPI_MOVE_32_TO_32 (&Dword, &Buffer[4]);
PldInfo->VerticalOffset = ACPI_PLD_GET_VERT_OFFSET (&Dword);
PldInfo->HorizontalOffset = ACPI_PLD_GET_HORIZ_OFFSET (&Dword);
}
*ReturnBuffer = PldInfo;
return (AE_OK);
}
static acpi_status
acpi_ev_save_method_info(acpi_handle obj_handle,
u32 level, void *obj_desc, void **return_value)
{
struct acpi_gpe_block_info *gpe_block = (void *)obj_desc;
struct acpi_gpe_event_info *gpe_event_info;
u32 gpe_number;
char name[ACPI_NAME_SIZE + 1];
u8 type;
acpi_status status;
ACPI_FUNCTION_TRACE("ev_save_method_info");
/*
* _Lxx and _Exx GPE method support
*
* 1) Extract the name from the object and convert to a string
*/
ACPI_MOVE_32_TO_32(name,
&((struct acpi_namespace_node *)obj_handle)->name.
integer);
name[ACPI_NAME_SIZE] = 0;
/*
* 2) Edge/Level determination is based on the 2nd character
* of the method name
*
* NOTE: Default GPE type is RUNTIME. May be changed later to WAKE
* if a _PRW object is found that points to this GPE.
*/
switch (name[1]) {
case 'L':
type = ACPI_GPE_LEVEL_TRIGGERED;
break;
case 'E':
type = ACPI_GPE_EDGE_TRIGGERED;
break;
default:
/* Unknown method type, just ignore it! */
ACPI_ERROR((AE_INFO,
"Unknown GPE method type: %s (name not of form _Lxx or _Exx)",
name));
return_ACPI_STATUS(AE_OK);
}
/* Convert the last two characters of the name to the GPE Number */
gpe_number = ACPI_STRTOUL(&name[2], NULL, 16);
if (gpe_number == ACPI_UINT32_MAX) {
/* Conversion failed; invalid method, just ignore it */
ACPI_ERROR((AE_INFO,
"Could not extract GPE number from name: %s (name is not of form _Lxx or _Exx)",
name));
return_ACPI_STATUS(AE_OK);
}
/* Ensure that we have a valid GPE number for this GPE block */
if ((gpe_number < gpe_block->block_base_number) ||
(gpe_number >=
(gpe_block->block_base_number +
(gpe_block->register_count * 8)))) {
/*
* Not valid for this GPE block, just ignore it
* However, it may be valid for a different GPE block, since GPE0 and GPE1
* methods both appear under \_GPE.
*/
return_ACPI_STATUS(AE_OK);
}
/*
* Now we can add this information to the gpe_event_info block
* for use during dispatch of this GPE. Default type is RUNTIME, although
* this may change when the _PRW methods are executed later.
*/
gpe_event_info =
&gpe_block->event_info[gpe_number - gpe_block->block_base_number];
gpe_event_info->flags = (u8)
(type | ACPI_GPE_DISPATCH_METHOD | ACPI_GPE_TYPE_RUNTIME);
gpe_event_info->dispatch.method_node =
(struct acpi_namespace_node *)obj_handle;
/* Update enable mask, but don't enable the HW GPE as of yet */
status = acpi_ev_enable_gpe(gpe_event_info, FALSE);
ACPI_DEBUG_PRINT((ACPI_DB_LOAD,
"Registered GPE method %s as GPE number 0x%.2X\n",
name, gpe_number));
return_ACPI_STATUS(status);
}
UINT32
AcpiNsBuildNormalizedPath (
ACPI_NAMESPACE_NODE *Node,
char *FullPath,
UINT32 PathSize,
BOOLEAN NoTrailing)
{
UINT32 Length = 0, i;
char Name[ACPI_NAME_SIZE];
BOOLEAN DoNoTrailing;
char c, *Left, *Right;
ACPI_NAMESPACE_NODE *NextNode;
ACPI_FUNCTION_TRACE_PTR (NsBuildNormalizedPath, Node);
#define ACPI_PATH_PUT8(Path, Size, Byte, Length) \
do { \
if ((Length) < (Size)) \
{ \
(Path)[(Length)] = (Byte); \
} \
(Length)++; \
} while (0)
/*
* Make sure the PathSize is correct, so that we don't need to
* validate both FullPath and PathSize.
*/
if (!FullPath)
{
PathSize = 0;
}
if (!Node)
{
goto BuildTrailingNull;
}
NextNode = Node;
while (NextNode && NextNode != AcpiGbl_RootNode)
{
if (NextNode != Node)
{
ACPI_PATH_PUT8(FullPath, PathSize, AML_DUAL_NAME_PREFIX, Length);
}
ACPI_MOVE_32_TO_32 (Name, &NextNode->Name);
DoNoTrailing = NoTrailing;
for (i = 0; i < 4; i++)
{
c = Name[4-i-1];
if (DoNoTrailing && c != '_')
{
DoNoTrailing = FALSE;
}
if (!DoNoTrailing)
{
ACPI_PATH_PUT8(FullPath, PathSize, c, Length);
}
}
NextNode = NextNode->Parent;
}
ACPI_PATH_PUT8(FullPath, PathSize, AML_ROOT_PREFIX, Length);
/* Reverse the path string */
if (Length <= PathSize)
{
Left = FullPath;
Right = FullPath+Length - 1;
while (Left < Right)
{
c = *Left;
*Left++ = *Right;
*Right-- = c;
}
}
/* Append the trailing null */
BuildTrailingNull:
ACPI_PATH_PUT8 (FullPath, PathSize, '\0', Length);
#undef ACPI_PATH_PUT8
return_UINT32 (Length);
}
acpi_status
acpi_ns_lookup(union acpi_generic_state *scope_info,
char *pathname,
acpi_object_type type,
acpi_interpreter_mode interpreter_mode,
u32 flags,
struct acpi_walk_state *walk_state,
struct acpi_namespace_node **return_node)
{
acpi_status status;
char *path = pathname;
struct acpi_namespace_node *prefix_node;
struct acpi_namespace_node *current_node = NULL;
struct acpi_namespace_node *this_node = NULL;
u32 num_segments;
u32 num_carats;
acpi_name simple_name;
acpi_object_type type_to_check_for;
acpi_object_type this_search_type;
u32 search_parent_flag = ACPI_NS_SEARCH_PARENT;
u32 local_flags;
ACPI_FUNCTION_TRACE(ns_lookup);
if (!return_node) {
return_ACPI_STATUS(AE_BAD_PARAMETER);
}
local_flags = flags &
~(ACPI_NS_ERROR_IF_FOUND | ACPI_NS_OVERRIDE_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);
}
/* Get the prefix scope. A null scope means use the root scope */
if ((!scope_info) || (!scope_info->scope.node)) {
ACPI_DEBUG_PRINT((ACPI_DB_NAMES,
"Null scope prefix, using root node (%p)\n",
acpi_gbl_root_node));
prefix_node = acpi_gbl_root_node;
} else {
prefix_node = scope_info->scope.node;
if (ACPI_GET_DESCRIPTOR_TYPE(prefix_node) !=
ACPI_DESC_TYPE_NAMED) {
ACPI_ERROR((AE_INFO, "%p is not a namespace node [%s]",
prefix_node,
acpi_ut_get_descriptor_name(prefix_node)));
return_ACPI_STATUS(AE_AML_INTERNAL);
}
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 = prefix_node->parent;
}
}
}
/* Save type. TBD: may be no longer necessary */
type_to_check_for = type;
/*
* Begin examination of the actual pathname
*/
if (!pathname) {
/* A Null name_path is allowed and refers to the root */
num_segments = 0;
this_node = acpi_gbl_root_node;
path = "";
ACPI_DEBUG_PRINT((ACPI_DB_NAMES,
"Null Pathname (Zero segments), Flags=%X\n",
flags));
} else {
/*
* Name pointer is valid (and must be in internal name format)
*
* Check for scope prefixes:
*
* As represented in the AML stream, a namepath consists of an
* optional scope prefix followed by a name segment part.
*
* If present, the scope prefix is either a Root Prefix (in
* which case the name is fully qualified), or one or more
* Parent Prefixes (in which case the name's scope is relative
* to the current scope).
*/
if (*path == (u8) AML_ROOT_PREFIX) {
/* Pathname is fully qualified, start from the root */
this_node = acpi_gbl_root_node;
search_parent_flag = ACPI_NS_NO_UPSEARCH;
/* Point to name segment part */
path++;
ACPI_DEBUG_PRINT((ACPI_DB_NAMES,
"Path is absolute from root [%p]\n",
this_node));
} else {
/* Pathname is relative to current scope, start there */
ACPI_DEBUG_PRINT((ACPI_DB_NAMES,
"Searching relative to prefix scope [%4.4s] (%p)\n",
acpi_ut_get_node_name(prefix_node),
prefix_node));
/*
* Handle multiple Parent Prefixes (carat) by just getting
* the parent node for each prefix instance.
*/
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;
/*
* Point past this prefix to the name segment
* part or the next Parent Prefix
*/
path++;
/* Backup to the parent node */
num_carats++;
this_node = this_node->parent;
if (!this_node) {
/* Current scope has no parent scope */
ACPI_ERROR((AE_INFO,
"%s: Path has too many parent prefixes (^) "
"- reached beyond root node",
pathname));
return_ACPI_STATUS(AE_NOT_FOUND);
}
}
if (search_parent_flag == ACPI_NS_NO_UPSEARCH) {
ACPI_DEBUG_PRINT((ACPI_DB_NAMES,
"Search scope is [%4.4s], path has %u carat(s)\n",
acpi_ut_get_node_name
(this_node), num_carats));
}
}
/*
* Determine the number of ACPI name segments in this pathname.
*
* The segment part consists of either:
* - A Null name segment (0)
* - A dual_name_prefix followed by two 4-byte name segments
* - A multi_name_prefix followed by a byte indicating the
* number of segments and the segments themselves.
* - A single 4-byte name segment
*
* Examine the name prefix opcode, if any, to determine the number of
* segments.
*/
switch (*path) {
case 0:
/*
* Null name after a root or parent prefixes. We already
* have the correct target node and there are no name segments.
*/
num_segments = 0;
type = this_node->type;
ACPI_DEBUG_PRINT((ACPI_DB_NAMES,
"Prefix-only Pathname (Zero name segments), Flags=%X\n",
flags));
break;
case AML_DUAL_NAME_PREFIX:
/* More than one name_seg, search rules do not apply */
search_parent_flag = ACPI_NS_NO_UPSEARCH;
/* Two segments, point to first name segment */
num_segments = 2;
path++;
ACPI_DEBUG_PRINT((ACPI_DB_NAMES,
"Dual Pathname (2 segments, Flags=%X)\n",
flags));
break;
case AML_MULTI_NAME_PREFIX_OP:
/* More than one name_seg, search rules do not apply */
search_parent_flag = ACPI_NS_NO_UPSEARCH;
/* Extract segment count, point to first name segment */
path++;
num_segments = (u32) (u8) * path;
path++;
ACPI_DEBUG_PRINT((ACPI_DB_NAMES,
"Multi Pathname (%u Segments, Flags=%X)\n",
num_segments, flags));
break;
default:
/*
* Not a Null name, no Dual or Multi prefix, hence there is
* only one name segment and Pathname is already pointing to it.
*/
num_segments = 1;
ACPI_DEBUG_PRINT((ACPI_DB_NAMES,
"Simple Pathname (1 segment, Flags=%X)\n",
flags));
break;
}
ACPI_DEBUG_EXEC(acpi_ns_print_pathname(num_segments, path));
}
/*
* Search namespace for each segment of the name. Loop through and
* verify (or add to the namespace) each name segment.
*
* The object type is significant only at the last name
* segment. (We don't care about the types along the path, only
* the type of the final target object.)
*/
this_search_type = ACPI_TYPE_ANY;
current_node = this_node;
while (num_segments && current_node) {
num_segments--;
if (!num_segments) {
/* This is the last segment, enable typechecking */
this_search_type = type;
/*
* Only allow automatic parent search (search rules) if the caller
* requested it AND we have a single, non-fully-qualified name_seg
*/
if ((search_parent_flag != ACPI_NS_NO_UPSEARCH) &&
(flags & ACPI_NS_SEARCH_PARENT)) {
local_flags |= ACPI_NS_SEARCH_PARENT;
}
/* Set error flag according to caller */
if (flags & ACPI_NS_ERROR_IF_FOUND) {
local_flags |= ACPI_NS_ERROR_IF_FOUND;
}
/* Set override flag according to caller */
if (flags & ACPI_NS_OVERRIDE_IF_FOUND) {
local_flags |= ACPI_NS_OVERRIDE_IF_FOUND;
}
}
/* Extract one ACPI name from the front of the pathname */
ACPI_MOVE_32_TO_32(&simple_name, path);
/* Try to find the single (4 character) ACPI name */
status =
acpi_ns_search_and_enter(simple_name, walk_state,
current_node, interpreter_mode,
this_search_type, local_flags,
&this_node);
if (ACPI_FAILURE(status)) {
if (status == AE_NOT_FOUND) {
/* Name not found in ACPI namespace */
ACPI_DEBUG_PRINT((ACPI_DB_NAMES,
"Name [%4.4s] not found in scope [%4.4s] %p\n",
(char *)&simple_name,
(char *)¤t_node->name,
current_node));
}
*return_node = this_node;
return_ACPI_STATUS(status);
}
/* More segments to follow? */
if (num_segments > 0) {
/*
* If we have an alias to an object that opens a scope (such as a
* device or processor), we need to dereference the alias here so
* that we can access any children of the original node (via the
* remaining segments).
*/
if (this_node->type == ACPI_TYPE_LOCAL_ALIAS) {
if (!this_node->object) {
return_ACPI_STATUS(AE_NOT_EXIST);
}
if (acpi_ns_opens_scope
(((struct acpi_namespace_node *)
this_node->object)->type)) {
this_node =
(struct acpi_namespace_node *)
this_node->object;
}
}
}
/* Special handling for the last segment (num_segments == 0) */
else {
/*
* Sanity typecheck of the target object:
*
* If 1) This is the last segment (num_segments == 0)
* 2) And we are looking for a specific type
* (Not checking for TYPE_ANY)
* 3) Which is not an alias
* 4) Which is not a local type (TYPE_SCOPE)
* 5) And the type of target object is known (not TYPE_ANY)
* 6) And target object does not match what we are looking for
*
* Then we have a type mismatch. Just warn and ignore it.
*/
if ((type_to_check_for != ACPI_TYPE_ANY) &&
(type_to_check_for != ACPI_TYPE_LOCAL_ALIAS) &&
(type_to_check_for != ACPI_TYPE_LOCAL_METHOD_ALIAS)
&& (type_to_check_for != ACPI_TYPE_LOCAL_SCOPE)
&& (this_node->type != ACPI_TYPE_ANY)
&& (this_node->type != type_to_check_for)) {
/* Complain about a type mismatch */
ACPI_WARNING((AE_INFO,
"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
(type_to_check_for)));
}
/*
* If this is the last name segment and we are not looking for a
* specific type, but the type of found object is known, use that
* type to (later) see if it opens a scope.
*/
if (type == ACPI_TYPE_ANY) {
type = this_node->type;
}
}
/* Point to next name segment and make this node current */
path += ACPI_NAME_SIZE;
current_node = this_node;
}
void acpi_ut_dump_buffer2(u8 * buffer, u32 count, u32 display)
{
u32 i = 0;
u32 j;
u32 temp32;
u8 buf_char;
if (!buffer) {
acpi_os_printf("Null Buffer Pointer in DumpBuffer!\n");
return;
}
if ((count < 4) || (count & 0x01)) {
display = DB_BYTE_DISPLAY;
}
/* Nasty little dump buffer routine! */
while (i < count) {
/* Print current offset */
acpi_os_printf("%6.4X: ", i);
/* Print 16 hex chars */
for (j = 0; j < 16;) {
if (i + j >= count) {
/* Dump fill spaces */
acpi_os_printf("%*s", ((display * 2) + 1), " ");
j += display;
continue;
}
switch (display) {
case DB_BYTE_DISPLAY:
default: /* Default is BYTE display */
acpi_os_printf("%02X ",
buffer[(acpi_size) i + j]);
break;
case DB_WORD_DISPLAY:
ACPI_MOVE_16_TO_32(&temp32,
&buffer[(acpi_size) i + j]);
acpi_os_printf("%04X ", temp32);
break;
case DB_DWORD_DISPLAY:
ACPI_MOVE_32_TO_32(&temp32,
&buffer[(acpi_size) i + j]);
acpi_os_printf("%08X ", temp32);
break;
case DB_QWORD_DISPLAY:
ACPI_MOVE_32_TO_32(&temp32,
&buffer[(acpi_size) i + j]);
acpi_os_printf("%08X", temp32);
ACPI_MOVE_32_TO_32(&temp32,
&buffer[(acpi_size) i + j +
4]);
acpi_os_printf("%08X ", temp32);
break;
}
j += display;
}
/*
* Print the ASCII equivalent characters but watch out for the bad
* unprintable ones (printable chars are 0x20 through 0x7E)
*/
acpi_os_printf(" ");
for (j = 0; j < 16; j++) {
if (i + j >= count) {
acpi_os_printf("\n");
return;
}
buf_char = buffer[(acpi_size) i + j];
if (ACPI_IS_PRINT(buf_char)) {
acpi_os_printf("%c", buf_char);
} else {
acpi_os_printf(".");
}
}
/* Done with that line. */
acpi_os_printf("\n");
i += 16;
}
return;
}
void
acpi_ps_get_next_simple_arg (
struct acpi_parse_state *parser_state,
u32 arg_type,
union acpi_parse_object *arg)
{
ACPI_FUNCTION_TRACE_U32 ("ps_get_next_simple_arg", arg_type);
switch (arg_type) {
case ARGP_BYTEDATA:
acpi_ps_init_op (arg, AML_BYTE_OP);
arg->common.value.integer = (u32) ACPI_GET8 (parser_state->aml);
parser_state->aml++;
break;
case ARGP_WORDDATA:
acpi_ps_init_op (arg, AML_WORD_OP);
/* Get 2 bytes from the AML stream */
ACPI_MOVE_16_TO_32 (&arg->common.value.integer, parser_state->aml);
parser_state->aml += 2;
break;
case ARGP_DWORDDATA:
acpi_ps_init_op (arg, AML_DWORD_OP);
/* Get 4 bytes from the AML stream */
ACPI_MOVE_32_TO_32 (&arg->common.value.integer, parser_state->aml);
parser_state->aml += 4;
break;
case ARGP_QWORDDATA:
acpi_ps_init_op (arg, AML_QWORD_OP);
/* Get 8 bytes from the AML stream */
ACPI_MOVE_64_TO_64 (&arg->common.value.integer, parser_state->aml);
parser_state->aml += 8;
break;
case ARGP_CHARLIST:
acpi_ps_init_op (arg, AML_STRING_OP);
arg->common.value.string = (char *) parser_state->aml;
while (ACPI_GET8 (parser_state->aml) != '\0') {
parser_state->aml++;
}
parser_state->aml++;
break;
case ARGP_NAME:
case ARGP_NAMESTRING:
acpi_ps_init_op (arg, AML_INT_NAMEPATH_OP);
arg->common.value.name = acpi_ps_get_next_namestring (parser_state);
break;
default:
ACPI_REPORT_ERROR (("Invalid arg_type %X\n", arg_type));
break;
}
return_VOID;
}
ACPI_STATUS
AcpiEvMatchGpeMethod (
ACPI_HANDLE ObjHandle,
UINT32 Level,
void *Context,
void **ReturnValue)
{
ACPI_NAMESPACE_NODE *MethodNode = ACPI_CAST_PTR (ACPI_NAMESPACE_NODE, ObjHandle);
ACPI_GPE_WALK_INFO *WalkInfo = ACPI_CAST_PTR (ACPI_GPE_WALK_INFO, Context);
ACPI_GPE_EVENT_INFO *GpeEventInfo;
UINT32 GpeNumber;
char Name[ACPI_NAME_SIZE + 1];
UINT8 Type;
ACPI_FUNCTION_TRACE (EvMatchGpeMethod);
/* Check if requested OwnerId matches this OwnerId */
if ((WalkInfo->ExecuteByOwnerId) &&
(MethodNode->OwnerId != WalkInfo->OwnerId))
{
return_ACPI_STATUS (AE_OK);
}
/*
* Match and decode the _Lxx and _Exx GPE method names
*
* 1) Extract the method name and null terminate it
*/
ACPI_MOVE_32_TO_32 (Name, &MethodNode->Name.Integer);
Name[ACPI_NAME_SIZE] = 0;
/* 2) Name must begin with an underscore */
if (Name[0] != '_')
{
return_ACPI_STATUS (AE_OK); /* Ignore this method */
}
/*
* 3) Edge/Level determination is based on the 2nd character
* of the method name
*/
switch (Name[1])
{
case 'L':
Type = ACPI_GPE_LEVEL_TRIGGERED;
break;
case 'E':
Type = ACPI_GPE_EDGE_TRIGGERED;
break;
default:
/* Unknown method type, just ignore it */
ACPI_DEBUG_PRINT ((ACPI_DB_LOAD,
"Ignoring unknown GPE method type: %s "
"(name not of form _Lxx or _Exx)", Name));
return_ACPI_STATUS (AE_OK);
}
/* 4) The last two characters of the name are the hex GPE Number */
GpeNumber = ACPI_STRTOUL (&Name[2], NULL, 16);
if (GpeNumber == ACPI_UINT32_MAX)
{
/* Conversion failed; invalid method, just ignore it */
ACPI_DEBUG_PRINT ((ACPI_DB_LOAD,
"Could not extract GPE number from name: %s "
"(name is not of form _Lxx or _Exx)", Name));
return_ACPI_STATUS (AE_OK);
}
/* Ensure that we have a valid GPE number for this GPE block */
GpeEventInfo = AcpiEvLowGetGpeInfo (GpeNumber, WalkInfo->GpeBlock);
if (!GpeEventInfo)
{
/*
* This GpeNumber is not valid for this GPE block, just ignore it.
* However, it may be valid for a different GPE block, since GPE0
* and GPE1 methods both appear under \_GPE.
*/
return_ACPI_STATUS (AE_OK);
}
if ((GpeEventInfo->Flags & ACPI_GPE_DISPATCH_MASK) ==
ACPI_GPE_DISPATCH_HANDLER)
{
/* If there is already a handler, ignore this GPE method */
return_ACPI_STATUS (AE_OK);
}
if ((GpeEventInfo->Flags & ACPI_GPE_DISPATCH_MASK) ==
ACPI_GPE_DISPATCH_METHOD)
{
/*
* If there is already a method, ignore this method. But check
* for a type mismatch (if both the _Lxx AND _Exx exist)
*/
if (Type != (GpeEventInfo->Flags & ACPI_GPE_XRUPT_TYPE_MASK))
{
ACPI_ERROR ((AE_INFO,
"For GPE 0x%.2X, found both _L%2.2X and _E%2.2X methods",
GpeNumber, GpeNumber, GpeNumber));
}
return_ACPI_STATUS (AE_OK);
}
/*
* Add the GPE information from above to the GpeEventInfo block for
* use during dispatch of this GPE.
*/
GpeEventInfo->Flags &= ~(ACPI_GPE_DISPATCH_MASK);
GpeEventInfo->Flags |= (UINT8) (Type | ACPI_GPE_DISPATCH_METHOD);
GpeEventInfo->Dispatch.MethodNode = MethodNode;
ACPI_DEBUG_PRINT ((ACPI_DB_LOAD,
"Registered GPE method %s as GPE number 0x%.2X\n",
Name, GpeNumber));
return_ACPI_STATUS (AE_OK);
}
/*******************************************************************************
*
* FUNCTION: acpi_decode_pld_buffer
*
* PARAMETERS: in_buffer - Buffer returned by _PLD method
* length - Length of the in_buffer
* return_buffer - Where the decode buffer is returned
*
* RETURN: Status and the decoded _PLD buffer. User must deallocate
* the buffer via ACPI_FREE.
*
* DESCRIPTION: Decode the bit-packed buffer returned by the _PLD method into
* a local struct that is much more useful to an ACPI driver.
*
******************************************************************************/
acpi_status
acpi_decode_pld_buffer(u8 *in_buffer,
acpi_size length, struct acpi_pld_info ** return_buffer)
{
struct acpi_pld_info *pld_info;
u32 *buffer = ACPI_CAST_PTR(u32, in_buffer);
u32 dword;
/* Parameter validation */
if (!in_buffer || !return_buffer || (length < 16)) {
return (AE_BAD_PARAMETER);
}
pld_info = ACPI_ALLOCATE_ZEROED(sizeof(struct acpi_pld_info));
if (!pld_info) {
return (AE_NO_MEMORY);
}
/* First 32-bit DWord */
ACPI_MOVE_32_TO_32(&dword, &buffer[0]);
pld_info->revision = ACPI_PLD_GET_REVISION(&dword);
pld_info->ignore_color = ACPI_PLD_GET_IGNORE_COLOR(&dword);
pld_info->color = ACPI_PLD_GET_COLOR(&dword);
/* Second 32-bit DWord */
ACPI_MOVE_32_TO_32(&dword, &buffer[1]);
pld_info->width = ACPI_PLD_GET_WIDTH(&dword);
pld_info->height = ACPI_PLD_GET_HEIGHT(&dword);
/* Third 32-bit DWord */
ACPI_MOVE_32_TO_32(&dword, &buffer[2]);
pld_info->user_visible = ACPI_PLD_GET_USER_VISIBLE(&dword);
pld_info->dock = ACPI_PLD_GET_DOCK(&dword);
pld_info->lid = ACPI_PLD_GET_LID(&dword);
pld_info->panel = ACPI_PLD_GET_PANEL(&dword);
pld_info->vertical_position = ACPI_PLD_GET_VERTICAL(&dword);
pld_info->horizontal_position = ACPI_PLD_GET_HORIZONTAL(&dword);
pld_info->shape = ACPI_PLD_GET_SHAPE(&dword);
pld_info->group_orientation = ACPI_PLD_GET_ORIENTATION(&dword);
pld_info->group_token = ACPI_PLD_GET_TOKEN(&dword);
pld_info->group_position = ACPI_PLD_GET_POSITION(&dword);
pld_info->bay = ACPI_PLD_GET_BAY(&dword);
/* Fourth 32-bit DWord */
ACPI_MOVE_32_TO_32(&dword, &buffer[3]);
pld_info->ejectable = ACPI_PLD_GET_EJECTABLE(&dword);
pld_info->ospm_eject_required = ACPI_PLD_GET_OSPM_EJECT(&dword);
pld_info->cabinet_number = ACPI_PLD_GET_CABINET(&dword);
pld_info->card_cage_number = ACPI_PLD_GET_CARD_CAGE(&dword);
pld_info->reference = ACPI_PLD_GET_REFERENCE(&dword);
pld_info->rotation = ACPI_PLD_GET_ROTATION(&dword);
pld_info->order = ACPI_PLD_GET_ORDER(&dword);
if (length >= ACPI_PLD_BUFFER_SIZE) {
/* Fifth 32-bit DWord (Revision 2 of _PLD) */
ACPI_MOVE_32_TO_32(&dword, &buffer[4]);
pld_info->vertical_offset = ACPI_PLD_GET_VERT_OFFSET(&dword);
pld_info->horizontal_offset = ACPI_PLD_GET_HORIZ_OFFSET(&dword);
}
*return_buffer = pld_info;
return (AE_OK);
}
