static ACPI_STATUS
LsAmlListingWalk (
ACPI_PARSE_OBJECT *Op,
UINT32 Level,
void *Context)
{
UINT8 FileByte;
UINT32 i;
UINT32 FileId = (UINT32) ACPI_TO_INTEGER (Context);
LsWriteNodeToListing (Op, FileId);
if (Op->Asl.CompileFlags & NODE_IS_RESOURCE_DATA)
{
/* Buffer is a resource template, don't dump the data all at once */
return (AE_OK);
}
/* Write the hex bytes to the listing file(s) (if requested) */
for (i = 0; i < Op->Asl.FinalAmlLength; i++)
{
if (ACPI_FAILURE (FlReadFile (ASL_FILE_AML_OUTPUT, &FileByte, 1)))
{
FlFileError (ASL_FILE_AML_OUTPUT, ASL_MSG_READ);
AslAbort ();
}
LsWriteListingHexBytes (&FileByte, 1, FileId);
}
return (AE_OK);
}
void acpi_os_unmap_memory(void *where, acpi_size length)
{
acpi_physical_address offset;
acpi_size page_size;
page_size = acpi_os_get_page_size();
offset = ACPI_TO_INTEGER(where) % page_size;
munmap((u8 *)where - offset, (length + offset));
}
void
AcpiOsUnmapMemory (
void *Where,
ACPI_SIZE Length)
{
ACPI_PHYSICAL_ADDRESS Offset;
ACPI_SIZE PageSize;
PageSize = AcpiOsGetPageSize ();
Offset = ACPI_TO_INTEGER (Where) % PageSize;
munmap ((UINT8 *) Where - Offset, (Length + Offset));
}
static ACPI_STATUS
AeSetupConfiguration (
void *RegionAddr)
{
ACPI_OBJECT_LIST ArgList;
ACPI_OBJECT Arg[3];
/*
* Invoke _CFG method if present
*/
ArgList.Count = 1;
ArgList.Pointer = Arg;
Arg[0].Type = ACPI_TYPE_INTEGER;
Arg[0].Integer.Value = ACPI_TO_INTEGER (RegionAddr);
(void) AcpiEvaluateObject (NULL, "\\_CFG", &ArgList, NULL);
return (AE_OK);
}
void
ExInitializeAcpiTables (
void)
{
/* Setup RSDP */
Rsdp->RsdtPhysicalAddress = (UINT32) ACPI_TO_INTEGER (RsdtCode);
Rsdp->XsdtPhysicalAddress = (UINT64) ACPI_TO_INTEGER (XsdtCode);
/* RSDT and XSDT */
Rsdt->TableOffsetEntry[0] = (UINT32) ACPI_TO_INTEGER (FadtCode);
Xsdt->TableOffsetEntry[0] = (UINT64) ACPI_TO_INTEGER (FadtCode);
/* FADT */
Fadt->Facs = 0;
Fadt->Dsdt = 0;
Fadt->XFacs = (UINT64) ACPI_TO_INTEGER (FacsCode);
Fadt->XDsdt = (UINT64) ACPI_TO_INTEGER (DsdtCode);
/* Set new checksums for the modified tables */
Rsdp->Checksum = 0;
Rsdp->Checksum = (UINT8) -AcpiTbChecksum (
(void *) RsdpCode, ACPI_RSDP_CHECKSUM_LENGTH);
Rsdt->Header.Checksum = 0;
Rsdt->Header.Checksum = (UINT8) -AcpiTbChecksum (
(void *) Rsdt, Rsdt->Header.Length);
Xsdt->Header.Checksum = 0;
Xsdt->Header.Checksum = (UINT8) -AcpiTbChecksum (
(void *) Xsdt, Xsdt->Header.Length);
Fadt->Header.Checksum = 0;
Fadt->Header.Checksum = (UINT8) -AcpiTbChecksum (
(void *) Fadt, Fadt->Header.Length);
}
acpi_status
acpi_tb_find_rsdp (
struct acpi_table_desc *table_info,
u32 flags)
{
u8 *table_ptr;
u8 *mem_rover;
u64 phys_addr;
acpi_status status = AE_OK;
ACPI_FUNCTION_TRACE ("tb_find_rsdp");
/*
* Scan supports either 1) Logical addressing or 2) Physical addressing
*/
if ((flags & ACPI_MEMORY_MODE) == ACPI_LOGICAL_ADDRESSING) {
/*
* 1) Search EBDA (low memory) paragraphs
*/
status = acpi_os_map_memory ((u64) ACPI_LO_RSDP_WINDOW_BASE, ACPI_LO_RSDP_WINDOW_SIZE,
(void *) &table_ptr);
if (ACPI_FAILURE (status)) {
ACPI_DEBUG_PRINT ((ACPI_DB_ERROR, "Could not map memory at %X for length %X\n",
ACPI_LO_RSDP_WINDOW_BASE, ACPI_LO_RSDP_WINDOW_SIZE));
return_ACPI_STATUS (status);
}
mem_rover = acpi_tb_scan_memory_for_rsdp (table_ptr, ACPI_LO_RSDP_WINDOW_SIZE);
acpi_os_unmap_memory (table_ptr, ACPI_LO_RSDP_WINDOW_SIZE);
if (mem_rover) {
/* Found it, return the physical address */
phys_addr = ACPI_LO_RSDP_WINDOW_BASE;
phys_addr += ACPI_PTR_DIFF (mem_rover,table_ptr);
table_info->physical_address = phys_addr;
return_ACPI_STATUS (AE_OK);
}
/*
* 2) Search upper memory: 16-byte boundaries in E0000h-F0000h
*/
status = acpi_os_map_memory ((u64) ACPI_HI_RSDP_WINDOW_BASE, ACPI_HI_RSDP_WINDOW_SIZE,
(void *) &table_ptr);
if (ACPI_FAILURE (status)) {
ACPI_DEBUG_PRINT ((ACPI_DB_ERROR, "Could not map memory at %X for length %X\n",
ACPI_HI_RSDP_WINDOW_BASE, ACPI_HI_RSDP_WINDOW_SIZE));
return_ACPI_STATUS (status);
}
mem_rover = acpi_tb_scan_memory_for_rsdp (table_ptr, ACPI_HI_RSDP_WINDOW_SIZE);
acpi_os_unmap_memory (table_ptr, ACPI_HI_RSDP_WINDOW_SIZE);
if (mem_rover) {
/* Found it, return the physical address */
phys_addr = ACPI_HI_RSDP_WINDOW_BASE;
phys_addr += ACPI_PTR_DIFF (mem_rover, table_ptr);
table_info->physical_address = phys_addr;
return_ACPI_STATUS (AE_OK);
}
}
/*
* Physical addressing
*/
else {
/*
* 1) Search EBDA (low memory) paragraphs
*/
mem_rover = acpi_tb_scan_memory_for_rsdp (ACPI_PHYSADDR_TO_PTR (ACPI_LO_RSDP_WINDOW_BASE),
ACPI_LO_RSDP_WINDOW_SIZE);
if (mem_rover) {
/* Found it, return the physical address */
table_info->physical_address = ACPI_TO_INTEGER (mem_rover);
return_ACPI_STATUS (AE_OK);
}
/*
* 2) Search upper memory: 16-byte boundaries in E0000h-F0000h
*/
mem_rover = acpi_tb_scan_memory_for_rsdp (ACPI_PHYSADDR_TO_PTR (ACPI_HI_RSDP_WINDOW_BASE),
ACPI_HI_RSDP_WINDOW_SIZE);
if (mem_rover) {
/* Found it, return the physical address */
table_info->physical_address = ACPI_TO_INTEGER (mem_rover);
return_ACPI_STATUS (AE_OK);
}
}
/* RSDP signature was not found */
return_ACPI_STATUS (AE_NOT_FOUND);
}
ACPI_STATUS
AcpiExLoadOp (
ACPI_OPERAND_OBJECT *ObjDesc,
ACPI_OPERAND_OBJECT *Target,
ACPI_WALK_STATE *WalkState)
{
ACPI_OPERAND_OBJECT *DdbHandle;
ACPI_TABLE_HEADER *Table;
ACPI_TABLE_DESC TableDesc;
UINT32 TableIndex;
ACPI_STATUS Status;
UINT32 Length;
ACPI_FUNCTION_TRACE (ExLoadOp);
ACPI_MEMSET (&TableDesc, 0, sizeof (ACPI_TABLE_DESC));
/* Source Object can be either an OpRegion or a Buffer/Field */
switch (ObjDesc->Common.Type)
{
case ACPI_TYPE_REGION:
ACPI_DEBUG_PRINT ((ACPI_DB_EXEC,
"Load table from Region %p\n", ObjDesc));
/* Region must be SystemMemory (from ACPI spec) */
if (ObjDesc->Region.SpaceId != ACPI_ADR_SPACE_SYSTEM_MEMORY)
{
return_ACPI_STATUS (AE_AML_OPERAND_TYPE);
}
/*
* If the Region Address and Length have not been previously evaluated,
* evaluate them now and save the results.
*/
if (!(ObjDesc->Common.Flags & AOPOBJ_DATA_VALID))
{
Status = AcpiDsGetRegionArguments (ObjDesc);
if (ACPI_FAILURE (Status))
{
return_ACPI_STATUS (Status);
}
}
/* Get the table header first so we can get the table length */
Table = ACPI_ALLOCATE (sizeof (ACPI_TABLE_HEADER));
if (!Table)
{
return_ACPI_STATUS (AE_NO_MEMORY);
}
Status = AcpiExRegionRead (ObjDesc, sizeof (ACPI_TABLE_HEADER),
ACPI_CAST_PTR (UINT8, Table));
Length = Table->Length;
ACPI_FREE (Table);
if (ACPI_FAILURE (Status))
{
return_ACPI_STATUS (Status);
}
/* Must have at least an ACPI table header */
if (Length < sizeof (ACPI_TABLE_HEADER))
{
return_ACPI_STATUS (AE_INVALID_TABLE_LENGTH);
}
/*
* The original implementation simply mapped the table, with no copy.
* However, the memory region is not guaranteed to remain stable and
* we must copy the table to a local buffer. For example, the memory
* region is corrupted after suspend on some machines. Dynamically
* loaded tables are usually small, so this overhead is minimal.
*
* The latest implementation (5/2009) does not use a mapping at all.
* We use the low-level operation region interface to read the table
* instead of the obvious optimization of using a direct mapping.
* This maintains a consistent use of operation regions across the
* entire subsystem. This is important if additional processing must
* be performed in the (possibly user-installed) operation region
* handler. For example, AcpiExec and ASLTS depend on this.
*/
/* Allocate a buffer for the table */
TableDesc.Pointer = ACPI_ALLOCATE (Length);
if (!TableDesc.Pointer)
{
return_ACPI_STATUS (AE_NO_MEMORY);
}
/* Read the entire table */
Status = AcpiExRegionRead (ObjDesc, Length,
ACPI_CAST_PTR (UINT8, TableDesc.Pointer));
if (ACPI_FAILURE (Status))
{
ACPI_FREE (TableDesc.Pointer);
return_ACPI_STATUS (Status);
}
TableDesc.Address = ObjDesc->Region.Address;
break;
case ACPI_TYPE_BUFFER: /* Buffer or resolved RegionField */
ACPI_DEBUG_PRINT ((ACPI_DB_EXEC,
"Load table from Buffer or Field %p\n", ObjDesc));
/* Must have at least an ACPI table header */
if (ObjDesc->Buffer.Length < sizeof (ACPI_TABLE_HEADER))
{
return_ACPI_STATUS (AE_INVALID_TABLE_LENGTH);
}
/* Get the actual table length from the table header */
Table = ACPI_CAST_PTR (ACPI_TABLE_HEADER, ObjDesc->Buffer.Pointer);
Length = Table->Length;
/* Table cannot extend beyond the buffer */
if (Length > ObjDesc->Buffer.Length)
{
return_ACPI_STATUS (AE_AML_BUFFER_LIMIT);
}
if (Length < sizeof (ACPI_TABLE_HEADER))
{
return_ACPI_STATUS (AE_INVALID_TABLE_LENGTH);
}
/*
* Copy the table from the buffer because the buffer could be modified
* or even deleted in the future
*/
TableDesc.Pointer = ACPI_ALLOCATE (Length);
if (!TableDesc.Pointer)
{
return_ACPI_STATUS (AE_NO_MEMORY);
}
ACPI_MEMCPY (TableDesc.Pointer, Table, Length);
TableDesc.Address = ACPI_TO_INTEGER (TableDesc.Pointer);
break;
default:
return_ACPI_STATUS (AE_AML_OPERAND_TYPE);
}
/* Validate table checksum (will not get validated in TbAddTable) */
Status = AcpiTbVerifyChecksum (TableDesc.Pointer, Length);
if (ACPI_FAILURE (Status))
{
ACPI_FREE (TableDesc.Pointer);
return_ACPI_STATUS (Status);
}
/* Complete the table descriptor */
TableDesc.Length = Length;
TableDesc.Flags = ACPI_TABLE_ORIGIN_ALLOCATED;
/* Install the new table into the local data structures */
Status = AcpiTbAddTable (&TableDesc, &TableIndex);
if (ACPI_FAILURE (Status))
{
/* Delete allocated table buffer */
AcpiTbDeleteTable (&TableDesc);
return_ACPI_STATUS (Status);
}
/*
* Add the table to the namespace.
*
* Note: Load the table objects relative to the root of the namespace.
* This appears to go against the ACPI specification, but we do it for
* compatibility with other ACPI implementations.
*/
Status = AcpiExAddTable (TableIndex, AcpiGbl_RootNode, &DdbHandle);
if (ACPI_FAILURE (Status))
{
/* On error, TablePtr was deallocated above */
return_ACPI_STATUS (Status);
}
/* Store the DdbHandle into the Target operand */
Status = AcpiExStore (DdbHandle, Target, WalkState);
if (ACPI_FAILURE (Status))
{
(void) AcpiExUnloadTable (DdbHandle);
/* TablePtr was deallocated above */
AcpiUtRemoveReference (DdbHandle);
return_ACPI_STATUS (Status);
}
ACPI_DEBUG_PRINT ((ACPI_DB_INFO, "Dynamic OEM Table Load:"));
AcpiTbPrintTableHeader (0, TableDesc.Pointer);
/* Remove the reference by added by AcpiExStore above */
AcpiUtRemoveReference (DdbHandle);
/* Invoke table handler if present */
if (AcpiGbl_TableHandler)
{
(void) AcpiGbl_TableHandler (ACPI_TABLE_EVENT_LOAD, TableDesc.Pointer,
AcpiGbl_TableHandlerContext);
}
return_ACPI_STATUS (Status);
}
acpi_status acpi_ns_root_initialize(void)
{
acpi_status status;
const struct acpi_predefined_names *init_val = NULL;
struct acpi_namespace_node *new_node;
union acpi_operand_object *obj_desc;
acpi_string val = NULL;
ACPI_FUNCTION_TRACE(ns_root_initialize);
status = acpi_ut_acquire_mutex(ACPI_MTX_NAMESPACE);
if (ACPI_FAILURE(status)) {
return_ACPI_STATUS(status);
}
if (acpi_gbl_root_node) {
status = AE_OK;
goto unlock_and_exit;
}
acpi_gbl_root_node = &acpi_gbl_root_node_struct;
ACPI_DEBUG_PRINT((ACPI_DB_INFO,
"Entering predefined entries into namespace\n"));
for (init_val = acpi_gbl_pre_defined_names; init_val->name; init_val++) {
if (!ACPI_STRCMP(init_val->name, "_OSI")
&& !acpi_gbl_create_osi_method) {
continue;
}
status = acpi_ns_lookup(NULL, init_val->name, init_val->type,
ACPI_IMODE_LOAD_PASS2,
ACPI_NS_NO_UPSEARCH, NULL, &new_node);
if (ACPI_FAILURE(status) || (!new_node)) {
ACPI_EXCEPTION((AE_INFO, status,
"Could not create predefined name %s",
init_val->name));
}
if (init_val->val) {
status = acpi_os_predefined_override(init_val, &val);
if (ACPI_FAILURE(status)) {
ACPI_ERROR((AE_INFO,
"Could not override predefined %s",
init_val->name));
}
if (!val) {
val = init_val->val;
}
obj_desc =
acpi_ut_create_internal_object(init_val->type);
if (!obj_desc) {
status = AE_NO_MEMORY;
goto unlock_and_exit;
}
switch (init_val->type) {
case ACPI_TYPE_METHOD:
obj_desc->method.param_count =
(u8) ACPI_TO_INTEGER(val);
obj_desc->common.flags |= AOPOBJ_DATA_VALID;
#if defined (ACPI_ASL_COMPILER)
new_node->value = obj_desc->method.param_count;
#else
obj_desc->method.info_flags =
ACPI_METHOD_INTERNAL_ONLY;
obj_desc->method.dispatch.implementation =
acpi_ut_osi_implementation;
#endif
break;
case ACPI_TYPE_INTEGER:
obj_desc->integer.value = ACPI_TO_INTEGER(val);
break;
case ACPI_TYPE_STRING:
obj_desc->string.length =
(u32) ACPI_STRLEN(val);
obj_desc->string.pointer = val;
obj_desc->common.flags |= AOPOBJ_STATIC_POINTER;
break;
case ACPI_TYPE_MUTEX:
obj_desc->mutex.node = new_node;
obj_desc->mutex.sync_level =
(u8) (ACPI_TO_INTEGER(val) - 1);
status =
acpi_os_create_mutex(&obj_desc->mutex.
os_mutex);
if (ACPI_FAILURE(status)) {
acpi_ut_remove_reference(obj_desc);
goto unlock_and_exit;
}
if (ACPI_STRCMP(init_val->name, "_GL_") == 0) {
acpi_gbl_global_lock_mutex = obj_desc;
status =
acpi_os_create_semaphore(1, 0,
&acpi_gbl_global_lock_semaphore);
if (ACPI_FAILURE(status)) {
acpi_ut_remove_reference
(obj_desc);
goto unlock_and_exit;
}
}
break;
default:
ACPI_ERROR((AE_INFO,
"Unsupported initial type value 0x%X",
init_val->type));
acpi_ut_remove_reference(obj_desc);
obj_desc = NULL;
continue;
}
status = acpi_ns_attach_object(new_node, obj_desc,
obj_desc->common.type);
acpi_ut_remove_reference(obj_desc);
}
}
unlock_and_exit:
(void)acpi_ut_release_mutex(ACPI_MTX_NAMESPACE);
if (ACPI_SUCCESS(status)) {
status = acpi_ns_get_node(NULL, "\\_GPE", ACPI_NS_NO_UPSEARCH,
&acpi_gbl_fadt_gpe_device);
}
return_ACPI_STATUS(status);
}
ACPI_STATUS
AcpiDsEvalTableRegionOperands (
ACPI_WALK_STATE *WalkState,
ACPI_PARSE_OBJECT *Op)
{
ACPI_STATUS Status;
ACPI_OPERAND_OBJECT *ObjDesc;
ACPI_OPERAND_OBJECT **Operand;
ACPI_NAMESPACE_NODE *Node;
ACPI_PARSE_OBJECT *NextOp;
UINT32 TableIndex;
ACPI_TABLE_HEADER *Table;
ACPI_FUNCTION_TRACE_PTR (DsEvalTableRegionOperands, Op);
/*
* This is where we evaluate the Signature string, OemId string,
* and OemTableId string of the Data Table Region declaration
*/
Node = Op->Common.Node;
/* NextOp points to Signature string op */
NextOp = Op->Common.Value.Arg;
/*
* Evaluate/create the Signature string, OemId string,
* and OemTableId string operands
*/
Status = AcpiDsCreateOperands (WalkState, NextOp);
if (ACPI_FAILURE (Status))
{
return_ACPI_STATUS (Status);
}
/*
* Resolve the Signature string, OemId string,
* and OemTableId string operands
*/
Status = AcpiExResolveOperands (Op->Common.AmlOpcode,
ACPI_WALK_OPERANDS, WalkState);
if (ACPI_FAILURE (Status))
{
return_ACPI_STATUS (Status);
}
Operand = &WalkState->Operands[0];
/* Find the ACPI table */
Status = AcpiTbFindTable (Operand[0]->String.Pointer,
Operand[1]->String.Pointer, Operand[2]->String.Pointer,
&TableIndex);
if (ACPI_FAILURE (Status))
{
return_ACPI_STATUS (Status);
}
AcpiUtRemoveReference (Operand[0]);
AcpiUtRemoveReference (Operand[1]);
AcpiUtRemoveReference (Operand[2]);
Status = AcpiGetTableByIndex (TableIndex, &Table);
if (ACPI_FAILURE (Status))
{
return_ACPI_STATUS (Status);
}
ObjDesc = AcpiNsGetAttachedObject (Node);
if (!ObjDesc)
{
return_ACPI_STATUS (AE_NOT_EXIST);
}
ObjDesc->Region.Address = (ACPI_PHYSICAL_ADDRESS) ACPI_TO_INTEGER (Table);
ObjDesc->Region.Length = Table->Length;
ACPI_DEBUG_PRINT ((ACPI_DB_EXEC, "RgnObj %p Addr %8.8X%8.8X Len %X\n",
ObjDesc,
ACPI_FORMAT_NATIVE_UINT (ObjDesc->Region.Address),
ObjDesc->Region.Length));
/* Now the address and length are valid for this opregion */
ObjDesc->Region.Flags |= AOPOBJ_DATA_VALID;
return_ACPI_STATUS (Status);
}
static void
TrDoSwitch (
ACPI_PARSE_OBJECT *StartNode)
{
ACPI_PARSE_OBJECT *Next;
ACPI_PARSE_OBJECT *CaseOp = NULL;
ACPI_PARSE_OBJECT *CaseBlock = NULL;
ACPI_PARSE_OBJECT *DefaultOp = NULL;
ACPI_PARSE_OBJECT *CurrentParentNode;
ACPI_PARSE_OBJECT *Conditional = NULL;
ACPI_PARSE_OBJECT *Predicate;
ACPI_PARSE_OBJECT *Peer;
ACPI_PARSE_OBJECT *NewOp;
ACPI_PARSE_OBJECT *NewOp2;
ACPI_PARSE_OBJECT *MethodOp;
ACPI_PARSE_OBJECT *StoreOp;
ACPI_PARSE_OBJECT *BreakOp;
ACPI_PARSE_OBJECT *BufferOp;
char *PredicateValueName;
UINT16 Index;
UINT32 Btype;
/* Start node is the Switch() node */
CurrentParentNode = StartNode;
/* Create a new temp name of the form _T_x */
PredicateValueName = TrAmlGetNextTempName (StartNode, &AslGbl_TempCount);
if (!PredicateValueName)
{
return;
}
/* First child is the Switch() predicate */
Next = StartNode->Asl.Child;
/*
* Examine the return type of the Switch Value -
* must be Integer/Buffer/String
*/
Index = (UINT16) (Next->Asl.ParseOpcode - ASL_PARSE_OPCODE_BASE);
Btype = AslKeywordMapping[Index].AcpiBtype;
if ((Btype != ACPI_BTYPE_INTEGER) &&
(Btype != ACPI_BTYPE_STRING) &&
(Btype != ACPI_BTYPE_BUFFER))
{
AslError (ASL_WARNING, ASL_MSG_SWITCH_TYPE, Next, NULL);
Btype = ACPI_BTYPE_INTEGER;
}
/* CASE statements start at next child */
Peer = Next->Asl.Next;
while (Peer)
{
Next = Peer;
Peer = Next->Asl.Next;
if (Next->Asl.ParseOpcode == PARSEOP_CASE)
{
if (CaseOp)
{
/* Add an ELSE to complete the previous CASE */
NewOp = TrCreateLeafOp (PARSEOP_ELSE);
NewOp->Asl.Parent = Conditional->Asl.Parent;
TrAmlInitLineNumbers (NewOp, NewOp->Asl.Parent);
/* Link ELSE node as a peer to the previous IF */
TrAmlInsertPeer (Conditional, NewOp);
CurrentParentNode = NewOp;
}
CaseOp = Next;
Conditional = CaseOp;
CaseBlock = CaseOp->Asl.Child->Asl.Next;
Conditional->Asl.Child->Asl.Next = NULL;
Predicate = CaseOp->Asl.Child;
if ((Predicate->Asl.ParseOpcode == PARSEOP_PACKAGE) ||
(Predicate->Asl.ParseOpcode == PARSEOP_VAR_PACKAGE))
{
/*
* Convert the package declaration to this form:
*
* If (LNotEqual (Match (Package(<size>){<data>},
* MEQ, _T_x, MTR, Zero, Zero), Ones))
*/
NewOp2 = TrCreateLeafOp (PARSEOP_MATCHTYPE_MEQ);
Predicate->Asl.Next = NewOp2;
TrAmlInitLineNumbers (NewOp2, Conditional);
NewOp = NewOp2;
NewOp2 = TrCreateValuedLeafOp (PARSEOP_NAMESTRING,
(UINT64) ACPI_TO_INTEGER (PredicateValueName));
NewOp->Asl.Next = NewOp2;
TrAmlInitLineNumbers (NewOp2, Predicate);
NewOp = NewOp2;
NewOp2 = TrCreateLeafOp (PARSEOP_MATCHTYPE_MTR);
NewOp->Asl.Next = NewOp2;
TrAmlInitLineNumbers (NewOp2, Predicate);
NewOp = NewOp2;
NewOp2 = TrCreateLeafOp (PARSEOP_ZERO);
NewOp->Asl.Next = NewOp2;
TrAmlInitLineNumbers (NewOp2, Predicate);
NewOp = NewOp2;
NewOp2 = TrCreateLeafOp (PARSEOP_ZERO);
NewOp->Asl.Next = NewOp2;
TrAmlInitLineNumbers (NewOp2, Predicate);
NewOp2 = TrCreateLeafOp (PARSEOP_MATCH);
NewOp2->Asl.Child = Predicate; /* PARSEOP_PACKAGE */
TrAmlInitLineNumbers (NewOp2, Conditional);
TrAmlSetSubtreeParent (Predicate, NewOp2);
NewOp = NewOp2;
NewOp2 = TrCreateLeafOp (PARSEOP_ONES);
NewOp->Asl.Next = NewOp2;
TrAmlInitLineNumbers (NewOp2, Conditional);
NewOp2 = TrCreateLeafOp (PARSEOP_LEQUAL);
NewOp2->Asl.Child = NewOp;
NewOp->Asl.Parent = NewOp2;
TrAmlInitLineNumbers (NewOp2, Conditional);
TrAmlSetSubtreeParent (NewOp, NewOp2);
NewOp = NewOp2;
NewOp2 = TrCreateLeafOp (PARSEOP_LNOT);
NewOp2->Asl.Child = NewOp;
NewOp2->Asl.Parent = Conditional;
NewOp->Asl.Parent = NewOp2;
TrAmlInitLineNumbers (NewOp2, Conditional);
Conditional->Asl.Child = NewOp2;
NewOp2->Asl.Next = CaseBlock;
}
else
{
/*
* Integer and Buffer case.
*
* Change CaseOp() to: If (LEqual (SwitchValue, CaseValue)) {...}
* Note: SwitchValue is first to allow the CaseValue to be implicitly
* converted to the type of SwitchValue if necessary.
*
* CaseOp->Child is the case value
* CaseOp->Child->Peer is the beginning of the case block
*/
NewOp = TrCreateValuedLeafOp (PARSEOP_NAMESTRING,
(UINT64) ACPI_TO_INTEGER (PredicateValueName));
NewOp->Asl.Next = Predicate;
TrAmlInitLineNumbers (NewOp, Predicate);
NewOp2 = TrCreateLeafOp (PARSEOP_LEQUAL);
NewOp2->Asl.Parent = Conditional;
NewOp2->Asl.Child = NewOp;
TrAmlInitLineNumbers (NewOp2, Conditional);
TrAmlSetSubtreeParent (NewOp, NewOp2);
Predicate = NewOp2;
Predicate->Asl.Next = CaseBlock;
TrAmlSetSubtreeParent (Predicate, Conditional);
Conditional->Asl.Child = Predicate;
}
/* Reinitialize the CASE node to an IF node */
TrAmlInitNode (Conditional, PARSEOP_IF);
/*
* The first CASE(IF) is not nested under an ELSE.
* All other CASEs are children of a parent ELSE.
*/
if (CurrentParentNode == StartNode)
{
Conditional->Asl.Next = NULL;
}
else
{
/*
* The IF is a child of previous IF/ELSE. It
* is therefore without peer.
*/
CurrentParentNode->Asl.Child = Conditional;
Conditional->Asl.Parent = CurrentParentNode;
Conditional->Asl.Next = NULL;
}
}
else if (Next->Asl.ParseOpcode == PARSEOP_DEFAULT)
{
if (DefaultOp)
{
/*
* More than one Default
* (Parser does not catch this, must check here)
*/
AslError (ASL_ERROR, ASL_MSG_MULTIPLE_DEFAULT, Next, NULL);
}
else
{
/* Save the DEFAULT node for later, after CASEs */
DefaultOp = Next;
}
}
else
{
/* Unknown peer opcode */
AcpiOsPrintf ("Unknown parse opcode for switch statement: %s (%u)\n",
Next->Asl.ParseOpName, Next->Asl.ParseOpcode);
}
}
/* Add the default case at the end of the if/else construct */
if (DefaultOp)
{
/* If no CASE statements, this is an error - see below */
if (CaseOp)
{
/* Convert the DEFAULT node to an ELSE */
TrAmlInitNode (DefaultOp, PARSEOP_ELSE);
DefaultOp->Asl.Parent = Conditional->Asl.Parent;
/* Link ELSE node as a peer to the previous IF */
TrAmlInsertPeer (Conditional, DefaultOp);
}
}
if (!CaseOp)
{
AslError (ASL_ERROR, ASL_MSG_NO_CASES, StartNode, NULL);
}
/*
* Create a Name(_T_x, ...) statement. This statement must appear at the
* method level, in case a loop surrounds the switch statement and could
* cause the name to be created twice (error).
*/
/* Create the Name node */
Predicate = StartNode->Asl.Child;
NewOp = TrCreateLeafOp (PARSEOP_NAME);
TrAmlInitLineNumbers (NewOp, StartNode);
/* Find the parent method */
Next = StartNode;
while ((Next->Asl.ParseOpcode != PARSEOP_METHOD) &&
(Next->Asl.ParseOpcode != PARSEOP_DEFINITION_BLOCK))
{
Next = Next->Asl.Parent;
}
MethodOp = Next;
NewOp->Asl.CompileFlags |= OP_COMPILER_EMITTED;
NewOp->Asl.Parent = Next;
/* Insert name after the method name and arguments */
Next = Next->Asl.Child; /* Name */
Next = Next->Asl.Next; /* NumArgs */
Next = Next->Asl.Next; /* SerializeRule */
/*
* If method is not Serialized, we must make is so, because of the way
* that Switch() must be implemented -- we cannot allow multiple threads
* to execute this method concurrently since we need to create local
* temporary name(s).
*/
if (Next->Asl.ParseOpcode != PARSEOP_SERIALIZERULE_SERIAL)
{
AslError (ASL_REMARK, ASL_MSG_SERIALIZED, MethodOp,
"Due to use of Switch operator");
Next->Asl.ParseOpcode = PARSEOP_SERIALIZERULE_SERIAL;
}
Next = Next->Asl.Next; /* SyncLevel */
Next = Next->Asl.Next; /* ReturnType */
Next = Next->Asl.Next; /* ParameterTypes */
TrAmlInsertPeer (Next, NewOp);
TrAmlInitLineNumbers (NewOp, Next);
/* Create the NameSeg child for the Name node */
NewOp2 = TrCreateValuedLeafOp (PARSEOP_NAMESEG,
(UINT64) ACPI_TO_INTEGER (PredicateValueName));
TrAmlInitLineNumbers (NewOp2, NewOp);
NewOp2->Asl.CompileFlags |= OP_IS_NAME_DECLARATION;
NewOp->Asl.Child = NewOp2;
/* Create the initial value for the Name. Btype was already validated above */
switch (Btype)
{
case ACPI_BTYPE_INTEGER:
NewOp2->Asl.Next = TrCreateValuedLeafOp (PARSEOP_ZERO,
(UINT64) 0);
TrAmlInitLineNumbers (NewOp2->Asl.Next, NewOp);
break;
case ACPI_BTYPE_STRING:
NewOp2->Asl.Next = TrCreateValuedLeafOp (PARSEOP_STRING_LITERAL,
(UINT64) ACPI_TO_INTEGER (""));
TrAmlInitLineNumbers (NewOp2->Asl.Next, NewOp);
break;
case ACPI_BTYPE_BUFFER:
(void) TrLinkPeerOp (NewOp2, TrCreateValuedLeafOp (PARSEOP_BUFFER,
(UINT64) 0));
Next = NewOp2->Asl.Next;
TrAmlInitLineNumbers (Next, NewOp2);
(void) TrLinkOpChildren (Next, 1, TrCreateValuedLeafOp (PARSEOP_ZERO,
(UINT64) 1));
TrAmlInitLineNumbers (Next->Asl.Child, Next);
BufferOp = TrCreateValuedLeafOp (PARSEOP_DEFAULT_ARG, (UINT64) 0);
TrAmlInitLineNumbers (BufferOp, Next->Asl.Child);
(void) TrLinkPeerOp (Next->Asl.Child, BufferOp);
TrAmlSetSubtreeParent (Next->Asl.Child, Next);
break;
default:
break;
}
TrAmlSetSubtreeParent (NewOp2, NewOp);
/*
* Transform the Switch() into a While(One)-Break node.
* And create a Store() node which will be used to save the
* Switch() value. The store is of the form: Store (Value, _T_x)
* where _T_x is the temp variable.
*/
TrAmlInitNode (StartNode, PARSEOP_WHILE);
NewOp = TrCreateLeafOp (PARSEOP_ONE);
TrAmlInitLineNumbers (NewOp, StartNode);
NewOp->Asl.Next = Predicate->Asl.Next;
NewOp->Asl.Parent = StartNode;
StartNode->Asl.Child = NewOp;
/* Create a Store() node */
StoreOp = TrCreateLeafOp (PARSEOP_STORE);
TrAmlInitLineNumbers (StoreOp, NewOp);
StoreOp->Asl.Parent = StartNode;
TrAmlInsertPeer (NewOp, StoreOp);
/* Complete the Store subtree */
StoreOp->Asl.Child = Predicate;
Predicate->Asl.Parent = StoreOp;
NewOp = TrCreateValuedLeafOp (PARSEOP_NAMESEG,
(UINT64) ACPI_TO_INTEGER (PredicateValueName));
TrAmlInitLineNumbers (NewOp, StoreOp);
NewOp->Asl.Parent = StoreOp;
Predicate->Asl.Next = NewOp;
/* Create a Break() node and insert it into the end of While() */
Conditional = StartNode->Asl.Child;
while (Conditional->Asl.Next)
{
Conditional = Conditional->Asl.Next;
}
BreakOp = TrCreateLeafOp (PARSEOP_BREAK);
TrAmlInitLineNumbers (BreakOp, NewOp);
BreakOp->Asl.Parent = StartNode;
TrAmlInsertPeer (Conditional, BreakOp);
}
static acpi_status
acpi_tb_find_rsdp(struct acpi_table_desc *table_info, u32 flags)
{
u8 *table_ptr;
u8 *mem_rover;
u32 physical_address;
acpi_status status;
ACPI_FUNCTION_TRACE("tb_find_rsdp");
/*
* Scan supports either logical addressing or physical addressing
*/
if ((flags & ACPI_MEMORY_MODE) == ACPI_LOGICAL_ADDRESSING) {
/* 1a) Get the location of the Extended BIOS Data Area (EBDA) */
status = acpi_os_map_memory((acpi_physical_address)
ACPI_EBDA_PTR_LOCATION,
ACPI_EBDA_PTR_LENGTH,
(void *)&table_ptr);
if (ACPI_FAILURE(status)) {
ACPI_DEBUG_PRINT((ACPI_DB_ERROR,
"Could not map memory at %8.8X for length %X\n",
ACPI_EBDA_PTR_LOCATION,
ACPI_EBDA_PTR_LENGTH));
return_ACPI_STATUS(status);
}
ACPI_MOVE_16_TO_32(&physical_address, table_ptr);
/* Convert segment part to physical address */
physical_address <<= 4;
acpi_os_unmap_memory(table_ptr, ACPI_EBDA_PTR_LENGTH);
/* EBDA present? */
if (physical_address > 0x400) {
/*
* 1b) Search EBDA paragraphs (EBDa is required to be a
* minimum of 1_k length)
*/
status = acpi_os_map_memory((acpi_physical_address)
physical_address,
ACPI_EBDA_WINDOW_SIZE,
(void *)&table_ptr);
if (ACPI_FAILURE(status)) {
ACPI_DEBUG_PRINT((ACPI_DB_ERROR,
"Could not map memory at %8.8X for length %X\n",
physical_address,
ACPI_EBDA_WINDOW_SIZE));
return_ACPI_STATUS(status);
}
mem_rover = acpi_tb_scan_memory_for_rsdp(table_ptr,
ACPI_EBDA_WINDOW_SIZE);
acpi_os_unmap_memory(table_ptr, ACPI_EBDA_WINDOW_SIZE);
if (mem_rover) {
/* Return the physical address */
physical_address +=
ACPI_PTR_DIFF(mem_rover, table_ptr);
table_info->physical_address =
(acpi_physical_address) physical_address;
return_ACPI_STATUS(AE_OK);
}
}
/*
* 2) Search upper memory: 16-byte boundaries in E0000h-FFFFFh
*/
status = acpi_os_map_memory((acpi_physical_address)
ACPI_HI_RSDP_WINDOW_BASE,
ACPI_HI_RSDP_WINDOW_SIZE,
(void *)&table_ptr);
if (ACPI_FAILURE(status)) {
ACPI_DEBUG_PRINT((ACPI_DB_ERROR,
"Could not map memory at %8.8X for length %X\n",
ACPI_HI_RSDP_WINDOW_BASE,
ACPI_HI_RSDP_WINDOW_SIZE));
return_ACPI_STATUS(status);
}
mem_rover =
acpi_tb_scan_memory_for_rsdp(table_ptr,
ACPI_HI_RSDP_WINDOW_SIZE);
acpi_os_unmap_memory(table_ptr, ACPI_HI_RSDP_WINDOW_SIZE);
if (mem_rover) {
/* Return the physical address */
physical_address =
ACPI_HI_RSDP_WINDOW_BASE + ACPI_PTR_DIFF(mem_rover,
table_ptr);
table_info->physical_address =
(acpi_physical_address) physical_address;
return_ACPI_STATUS(AE_OK);
}
}
/*
* Physical addressing
*/
else {
/* 1a) Get the location of the EBDA */
ACPI_MOVE_16_TO_32(&physical_address, ACPI_EBDA_PTR_LOCATION);
physical_address <<= 4; /* Convert segment to physical address */
/* EBDA present? */
if (physical_address > 0x400) {
/*
* 1b) Search EBDA paragraphs (EBDa is required to be a minimum of
* 1_k length)
*/
mem_rover =
acpi_tb_scan_memory_for_rsdp(ACPI_PHYSADDR_TO_PTR
(physical_address),
ACPI_EBDA_WINDOW_SIZE);
if (mem_rover) {
/* Return the physical address */
table_info->physical_address =
ACPI_TO_INTEGER(mem_rover);
return_ACPI_STATUS(AE_OK);
}
}
/* 2) Search upper memory: 16-byte boundaries in E0000h-FFFFFh */
mem_rover =
acpi_tb_scan_memory_for_rsdp(ACPI_PHYSADDR_TO_PTR
(ACPI_HI_RSDP_WINDOW_BASE),
ACPI_HI_RSDP_WINDOW_SIZE);
if (mem_rover) {
/* Found it, return the physical address */
table_info->physical_address =
ACPI_TO_INTEGER(mem_rover);
return_ACPI_STATUS(AE_OK);
}
}
/* A valid RSDP was not found */
ACPI_REPORT_ERROR(("No valid RSDP was found\n"));
return_ACPI_STATUS(AE_NOT_FOUND);
}
ACPI_STATUS
LsAmlOffsetWalk (
ACPI_PARSE_OBJECT *Op,
UINT32 Level,
void *Context)
{
UINT32 FileId = (UINT32) ACPI_TO_INTEGER (Context);
ACPI_NAMESPACE_NODE *Node;
UINT32 Length;
UINT32 NamepathOffset;
UINT32 DataOffset;
ACPI_PARSE_OBJECT *NextOp;
/* Ignore actual data blocks for resource descriptors */
if (Op->Asl.CompileFlags & NODE_IS_RESOURCE_DATA)
{
return (AE_OK); /* Do NOT update the global AML offset */
}
/* We are only interested in named objects (have a namespace node) */
Node = Op->Asl.Node;
if (!Node)
{
Gbl_CurrentAmlOffset += Op->Asl.FinalAmlLength;
return (AE_OK);
}
/* Named resource descriptor (has a descriptor tag) */
if ((Node->Type == ACPI_TYPE_LOCAL_RESOURCE) &&
(Op->Asl.CompileFlags & NODE_IS_RESOURCE_DESC))
{
LsEmitOffsetTableEntry (FileId, Node, 0, Gbl_CurrentAmlOffset,
Op->Asl.ParseOpName, 0, Op->Asl.Extra, AML_BUFFER_OP);
Gbl_CurrentAmlOffset += Op->Asl.FinalAmlLength;
return (AE_OK);
}
switch (Op->Asl.AmlOpcode)
{
case AML_NAME_OP:
/* Named object -- Name (NameString, DataRefObject) */
if (!Op->Asl.Child)
{
FlPrintFile (FileId, "%s NO CHILD!\n", MsgBuffer);
return (AE_OK);
}
Length = Op->Asl.FinalAmlLength;
NamepathOffset = Gbl_CurrentAmlOffset + Length;
/* Get to the NameSeg/NamePath Op (and length of the name) */
Op = Op->Asl.Child;
/* Get offset of last nameseg and the actual data */
NamepathOffset = Gbl_CurrentAmlOffset + Length +
(Op->Asl.FinalAmlLength - ACPI_NAME_SIZE);
DataOffset = Gbl_CurrentAmlOffset + Length +
Op->Asl.FinalAmlLength;
/* Get actual value associated with the name */
Op = Op->Asl.Next;
switch (Op->Asl.AmlOpcode)
{
case AML_BYTE_OP:
case AML_WORD_OP:
case AML_DWORD_OP:
case AML_QWORD_OP:
/* The +1 is to handle the integer size prefix (opcode) */
LsEmitOffsetTableEntry (FileId, Node, NamepathOffset, (DataOffset + 1),
Op->Asl.ParseOpName, Op->Asl.Value.Integer,
(UINT8) Op->Asl.AmlOpcode, AML_NAME_OP);
break;
case AML_ONE_OP:
case AML_ONES_OP:
case AML_ZERO_OP:
/* For these, offset will point to the opcode */
LsEmitOffsetTableEntry (FileId, Node, NamepathOffset, DataOffset,
Op->Asl.ParseOpName, Op->Asl.Value.Integer,
(UINT8) Op->Asl.AmlOpcode, AML_NAME_OP);
break;
case AML_PACKAGE_OP:
case AML_VAR_PACKAGE_OP:
/* Get the package element count */
NextOp = Op->Asl.Child;
LsEmitOffsetTableEntry (FileId, Node, NamepathOffset, DataOffset,
Op->Asl.ParseOpName, NextOp->Asl.Value.Integer,
(UINT8) Op->Asl.AmlOpcode, AML_NAME_OP);
break;
default:
break;
}
Gbl_CurrentAmlOffset += Length;
return (AE_OK);
case AML_REGION_OP:
/* OperationRegion (NameString, RegionSpace, RegionOffset, RegionLength) */
Length = Op->Asl.FinalAmlLength;
/* Get the name/namepath node */
NextOp = Op->Asl.Child;
/* Get offset of last nameseg and the actual data */
NamepathOffset = Gbl_CurrentAmlOffset + Length +
(NextOp->Asl.FinalAmlLength - ACPI_NAME_SIZE);
DataOffset = Gbl_CurrentAmlOffset + Length +
(NextOp->Asl.FinalAmlLength + 1);
/* Get the SpaceId node, then the Offset (address) node */
NextOp = NextOp->Asl.Next;
NextOp = NextOp->Asl.Next;
switch (NextOp->Asl.AmlOpcode)
{
/*
* We are only interested in integer constants that can be changed
* at boot time. Note, the One/Ones/Zero opcodes are considered
* non-changeable, so we ignore them here.
*/
case AML_BYTE_OP:
case AML_WORD_OP:
case AML_DWORD_OP:
case AML_QWORD_OP:
LsEmitOffsetTableEntry (FileId, Node, NamepathOffset, (DataOffset + 1),
Op->Asl.ParseOpName, NextOp->Asl.Value.Integer,
(UINT8) NextOp->Asl.AmlOpcode, AML_REGION_OP);
Gbl_CurrentAmlOffset += Length;
return (AE_OK);
default:
break;
}
break;
case AML_METHOD_OP:
/* Method (Namepath, ...) */
Length = Op->Asl.FinalAmlLength;
/* Get the NameSeg/NamePath Op */
NextOp = Op->Asl.Child;
/* Get offset of last nameseg and the actual data (flags byte) */
NamepathOffset = Gbl_CurrentAmlOffset + Length +
(NextOp->Asl.FinalAmlLength - ACPI_NAME_SIZE);
DataOffset = Gbl_CurrentAmlOffset + Length +
NextOp->Asl.FinalAmlLength;
/* Get the flags byte Op */
NextOp = NextOp->Asl.Next;
LsEmitOffsetTableEntry (FileId, Node, NamepathOffset, DataOffset,
Op->Asl.ParseOpName, NextOp->Asl.Value.Integer,
(UINT8) Op->Asl.AmlOpcode, AML_METHOD_OP);
break;
case AML_PROCESSOR_OP:
/* Processor (Namepath, ProcessorId, Address, Length) */
Length = Op->Asl.FinalAmlLength;
NextOp = Op->Asl.Child; /* Get Namepath */
/* Get offset of last nameseg and the actual data (PBlock address) */
NamepathOffset = Gbl_CurrentAmlOffset + Length +
(NextOp->Asl.FinalAmlLength - ACPI_NAME_SIZE);
DataOffset = Gbl_CurrentAmlOffset + Length +
(NextOp->Asl.FinalAmlLength + 1);
NextOp = NextOp->Asl.Next; /* Get ProcessorID (BYTE) */
NextOp = NextOp->Asl.Next; /* Get Address (DWORD) */
LsEmitOffsetTableEntry (FileId, Node, NamepathOffset, DataOffset,
Op->Asl.ParseOpName, NextOp->Asl.Value.Integer,
(UINT8) AML_DWORD_OP, AML_PROCESSOR_OP);
break;
case AML_DEVICE_OP:
case AML_SCOPE_OP:
case AML_THERMAL_ZONE_OP:
/* Device/Scope/ThermalZone (Namepath) */
Length = Op->Asl.FinalAmlLength;
NextOp = Op->Asl.Child; /* Get Namepath */
/* Get offset of last nameseg */
NamepathOffset = Gbl_CurrentAmlOffset + Length +
(NextOp->Asl.FinalAmlLength - ACPI_NAME_SIZE);
LsEmitOffsetTableEntry (FileId, Node, NamepathOffset, 0,
Op->Asl.ParseOpName, 0, (UINT8) 0, Op->Asl.AmlOpcode);
break;
default:
break;
}
Gbl_CurrentAmlOffset += Op->Asl.FinalAmlLength;
return (AE_OK);
}
ACPI_STATUS
AcpiNsRootInitialize (
void)
{
ACPI_STATUS Status;
const ACPI_PREDEFINED_NAMES *InitVal = NULL;
ACPI_NAMESPACE_NODE *NewNode;
ACPI_OPERAND_OBJECT *ObjDesc;
ACPI_STRING Val = NULL;
ACPI_FUNCTION_TRACE (NsRootInitialize);
Status = AcpiUtAcquireMutex (ACPI_MTX_NAMESPACE);
if (ACPI_FAILURE (Status))
{
return_ACPI_STATUS (Status);
}
/*
* The global root ptr is initially NULL, so a non-NULL value indicates
* that AcpiNsRootInitialize() has already been called; just return.
*/
if (AcpiGbl_RootNode)
{
Status = AE_OK;
goto UnlockAndExit;
}
/*
* Tell the rest of the subsystem that the root is initialized
* (This is OK because the namespace is locked)
*/
AcpiGbl_RootNode = &AcpiGbl_RootNodeStruct;
/* Enter the pre-defined names in the name table */
ACPI_DEBUG_PRINT ((ACPI_DB_INFO,
"Entering predefined entries into namespace\n"));
for (InitVal = AcpiGbl_PreDefinedNames; InitVal->Name; InitVal++)
{
/* _OSI is optional for now, will be permanent later */
if (!strcmp (InitVal->Name, "_OSI") && !AcpiGbl_CreateOsiMethod)
{
continue;
}
Status = AcpiNsLookup (NULL, ACPI_CAST_PTR (char, InitVal->Name),
InitVal->Type, ACPI_IMODE_LOAD_PASS2, ACPI_NS_NO_UPSEARCH,
NULL, &NewNode);
if (ACPI_FAILURE (Status))
{
ACPI_EXCEPTION ((AE_INFO, Status,
"Could not create predefined name %s",
InitVal->Name));
continue;
}
/*
* Name entered successfully. If entry in PreDefinedNames[] specifies
* an initial value, create the initial value.
*/
if (InitVal->Val)
{
Status = AcpiOsPredefinedOverride (InitVal, &Val);
if (ACPI_FAILURE (Status))
{
ACPI_ERROR ((AE_INFO,
"Could not override predefined %s",
InitVal->Name));
}
if (!Val)
{
Val = InitVal->Val;
}
/*
* Entry requests an initial value, allocate a
* descriptor for it.
*/
ObjDesc = AcpiUtCreateInternalObject (InitVal->Type);
if (!ObjDesc)
{
Status = AE_NO_MEMORY;
goto UnlockAndExit;
}
/*
* Convert value string from table entry to
* internal representation. Only types actually
* used for initial values are implemented here.
*/
switch (InitVal->Type)
{
case ACPI_TYPE_METHOD:
ObjDesc->Method.ParamCount = (UINT8) ACPI_TO_INTEGER (Val);
ObjDesc->Common.Flags |= AOPOBJ_DATA_VALID;
#if defined (ACPI_ASL_COMPILER)
/* Save the parameter count for the iASL compiler */
NewNode->Value = ObjDesc->Method.ParamCount;
#else
/* Mark this as a very SPECIAL method */
ObjDesc->Method.InfoFlags = ACPI_METHOD_INTERNAL_ONLY;
ObjDesc->Method.Dispatch.Implementation = AcpiUtOsiImplementation;
#endif
break;
case ACPI_TYPE_INTEGER:
ObjDesc->Integer.Value = ACPI_TO_INTEGER (Val);
break;
case ACPI_TYPE_STRING:
/* Build an object around the static string */
ObjDesc->String.Length = (UINT32) strlen (Val);
ObjDesc->String.Pointer = Val;
ObjDesc->Common.Flags |= AOPOBJ_STATIC_POINTER;
break;
case ACPI_TYPE_MUTEX:
ObjDesc->Mutex.Node = NewNode;
ObjDesc->Mutex.SyncLevel = (UINT8) (ACPI_TO_INTEGER (Val) - 1);
/* Create a mutex */
Status = AcpiOsCreateMutex (&ObjDesc->Mutex.OsMutex);
if (ACPI_FAILURE (Status))
{
AcpiUtRemoveReference (ObjDesc);
goto UnlockAndExit;
}
/* Special case for ACPI Global Lock */
if (strcmp (InitVal->Name, "_GL_") == 0)
{
AcpiGbl_GlobalLockMutex = ObjDesc;
/* Create additional counting semaphore for global lock */
Status = AcpiOsCreateSemaphore (
1, 0, &AcpiGbl_GlobalLockSemaphore);
if (ACPI_FAILURE (Status))
{
AcpiUtRemoveReference (ObjDesc);
goto UnlockAndExit;
}
}
break;
default:
ACPI_ERROR ((AE_INFO, "Unsupported initial type value 0x%X",
InitVal->Type));
AcpiUtRemoveReference (ObjDesc);
ObjDesc = NULL;
continue;
}
/* Store pointer to value descriptor in the Node */
Status = AcpiNsAttachObject (NewNode, ObjDesc,
ObjDesc->Common.Type);
/* Remove local reference to the object */
AcpiUtRemoveReference (ObjDesc);
}
}
UnlockAndExit:
(void) AcpiUtReleaseMutex (ACPI_MTX_NAMESPACE);
/* Save a handle to "_GPE", it is always present */
if (ACPI_SUCCESS (Status))
{
Status = AcpiNsGetNode (NULL, "\\_GPE", ACPI_NS_NO_UPSEARCH,
&AcpiGbl_FadtGpeDevice);
}
return_ACPI_STATUS (Status);
}
ACPI_STATUS
AeExceptionHandler (
ACPI_STATUS AmlStatus,
ACPI_NAME Name,
UINT16 Opcode,
UINT32 AmlOffset,
void *Context)
{
ACPI_STATUS NewAmlStatus = AmlStatus;
ACPI_STATUS Status;
ACPI_BUFFER ReturnObj;
ACPI_OBJECT_LIST ArgList;
ACPI_OBJECT Arg[3];
const char *Exception;
Exception = AcpiFormatException (AmlStatus);
AcpiOsPrintf ("[AcpiExec] Exception %s during execution ", Exception);
if (Name)
{
AcpiOsPrintf ("of method [%4.4s]", (char *) &Name);
}
else
{
AcpiOsPrintf ("at module level (table load)");
}
AcpiOsPrintf (" Opcode [%s] @%X\n", AcpiPsGetOpcodeName (Opcode), AmlOffset);
/*
* Invoke the _ERR method if present
*
* Setup parameter object
*/
ArgList.Count = 3;
ArgList.Pointer = Arg;
Arg[0].Type = ACPI_TYPE_INTEGER;
Arg[0].Integer.Value = AmlStatus;
Arg[1].Type = ACPI_TYPE_STRING;
Arg[1].String.Pointer = ACPI_CAST_PTR (char, Exception);
Arg[1].String.Length = ACPI_STRLEN (Exception);
Arg[2].Type = ACPI_TYPE_INTEGER;
Arg[2].Integer.Value = ACPI_TO_INTEGER (AcpiOsGetThreadId());
/* Setup return buffer */
ReturnObj.Pointer = NULL;
ReturnObj.Length = ACPI_ALLOCATE_BUFFER;
Status = AcpiEvaluateObject (NULL, "\\_ERR", &ArgList, &ReturnObj);
if (ACPI_SUCCESS (Status))
{
if (ReturnObj.Pointer)
{
/* Override original status */
NewAmlStatus = (ACPI_STATUS)
((ACPI_OBJECT *) ReturnObj.Pointer)->Integer.Value;
AcpiOsFree (ReturnObj.Pointer);
}
}
else if (Status != AE_NOT_FOUND)
{
AcpiOsPrintf ("[AcpiExec] Could not execute _ERR method, %s\n",
AcpiFormatException (Status));
}
/* Global override */
if (AcpiGbl_IgnoreErrors)
{
NewAmlStatus = AE_OK;
}
if (NewAmlStatus != AmlStatus)
{
AcpiOsPrintf ("[AcpiExec] Exception override, new status %s\n",
AcpiFormatException (NewAmlStatus));
}
return (NewAmlStatus);
}
ACPI_STATUS
AcpiTbFindRsdp (
ACPI_TABLE_DESC *TableInfo,
UINT32 Flags)
{
UINT8 *TablePtr;
UINT8 *MemRover;
UINT64 PhysAddr;
ACPI_STATUS Status = AE_OK;
ACPI_FUNCTION_TRACE ("TbFindRsdp");
/*
* Scan supports either 1) Logical addressing or 2) Physical addressing
*/
if ((Flags & ACPI_MEMORY_MODE) == ACPI_LOGICAL_ADDRESSING)
{
/*
* 1) Search EBDA (low memory) paragraphs
*/
Status = AcpiOsMapMemory ((UINT64) ACPI_LO_RSDP_WINDOW_BASE, ACPI_LO_RSDP_WINDOW_SIZE,
(void **) &TablePtr);
if (ACPI_FAILURE (Status))
{
ACPI_DEBUG_PRINT ((ACPI_DB_ERROR, "Could not map memory at %X for length %X\n",
ACPI_LO_RSDP_WINDOW_BASE, ACPI_LO_RSDP_WINDOW_SIZE));
return_ACPI_STATUS (Status);
}
MemRover = AcpiTbScanMemoryForRsdp (TablePtr, ACPI_LO_RSDP_WINDOW_SIZE);
AcpiOsUnmapMemory (TablePtr, ACPI_LO_RSDP_WINDOW_SIZE);
if (MemRover)
{
/* Found it, return the physical address */
PhysAddr = ACPI_LO_RSDP_WINDOW_BASE;
PhysAddr += ACPI_PTR_DIFF (MemRover,TablePtr);
TableInfo->PhysicalAddress = PhysAddr;
return_ACPI_STATUS (AE_OK);
}
/*
* 2) Search upper memory: 16-byte boundaries in E0000h-F0000h
*/
Status = AcpiOsMapMemory ((UINT64) ACPI_HI_RSDP_WINDOW_BASE, ACPI_HI_RSDP_WINDOW_SIZE,
(void **) &TablePtr);
if (ACPI_FAILURE (Status))
{
ACPI_DEBUG_PRINT ((ACPI_DB_ERROR, "Could not map memory at %X for length %X\n",
ACPI_HI_RSDP_WINDOW_BASE, ACPI_HI_RSDP_WINDOW_SIZE));
return_ACPI_STATUS (Status);
}
MemRover = AcpiTbScanMemoryForRsdp (TablePtr, ACPI_HI_RSDP_WINDOW_SIZE);
AcpiOsUnmapMemory (TablePtr, ACPI_HI_RSDP_WINDOW_SIZE);
if (MemRover)
{
/* Found it, return the physical address */
PhysAddr = ACPI_HI_RSDP_WINDOW_BASE;
PhysAddr += ACPI_PTR_DIFF (MemRover, TablePtr);
TableInfo->PhysicalAddress = PhysAddr;
return_ACPI_STATUS (AE_OK);
}
}
/*
* Physical addressing
*/
else
{
/*
* 1) Search EBDA (low memory) paragraphs
*/
MemRover = AcpiTbScanMemoryForRsdp (ACPI_PHYSADDR_TO_PTR (ACPI_LO_RSDP_WINDOW_BASE),
ACPI_LO_RSDP_WINDOW_SIZE);
if (MemRover)
{
/* Found it, return the physical address */
TableInfo->PhysicalAddress = ACPI_TO_INTEGER (MemRover);
return_ACPI_STATUS (AE_OK);
}
/*
* 2) Search upper memory: 16-byte boundaries in E0000h-F0000h
*/
MemRover = AcpiTbScanMemoryForRsdp (ACPI_PHYSADDR_TO_PTR (ACPI_HI_RSDP_WINDOW_BASE),
ACPI_HI_RSDP_WINDOW_SIZE);
if (MemRover)
{
/* Found it, return the physical address */
TableInfo->PhysicalAddress = ACPI_TO_INTEGER (MemRover);
return_ACPI_STATUS (AE_OK);
}
}
/* RSDP signature was not found */
return_ACPI_STATUS (AE_NOT_FOUND);
}
acpi_status
acpi_ds_eval_table_region_operands(struct acpi_walk_state *walk_state,
union acpi_parse_object *op)
{
acpi_status status;
union acpi_operand_object *obj_desc;
union acpi_operand_object **operand;
struct acpi_namespace_node *node;
union acpi_parse_object *next_op;
u32 table_index;
struct acpi_table_header *table;
ACPI_FUNCTION_TRACE_PTR(ds_eval_table_region_operands, op);
/*
* This is where we evaluate the signature_string and oem_iDString
* and oem_table_iDString of the data_table_region declaration
*/
node = op->common.node;
/* next_op points to signature_string op */
next_op = op->common.value.arg;
/*
* Evaluate/create the signature_string and oem_iDString
* and oem_table_iDString operands
*/
status = acpi_ds_create_operands(walk_state, next_op);
if (ACPI_FAILURE(status)) {
return_ACPI_STATUS(status);
}
/*
* Resolve the signature_string and oem_iDString
* and oem_table_iDString operands
*/
status = acpi_ex_resolve_operands(op->common.aml_opcode,
ACPI_WALK_OPERANDS, walk_state);
if (ACPI_FAILURE(status)) {
return_ACPI_STATUS(status);
}
operand = &walk_state->operands[0];
/* Find the ACPI table */
status = acpi_tb_find_table(operand[0]->string.pointer,
operand[1]->string.pointer,
operand[2]->string.pointer, &table_index);
if (ACPI_FAILURE(status)) {
return_ACPI_STATUS(status);
}
acpi_ut_remove_reference(operand[0]);
acpi_ut_remove_reference(operand[1]);
acpi_ut_remove_reference(operand[2]);
status = acpi_get_table_by_index(table_index, &table);
if (ACPI_FAILURE(status)) {
return_ACPI_STATUS(status);
}
obj_desc = acpi_ns_get_attached_object(node);
if (!obj_desc) {
return_ACPI_STATUS(AE_NOT_EXIST);
}
obj_desc->region.address =
(acpi_physical_address) ACPI_TO_INTEGER(table);
obj_desc->region.length = table->length;
ACPI_DEBUG_PRINT((ACPI_DB_EXEC, "RgnObj %p Addr %8.8X%8.8X Len %X\n",
obj_desc,
ACPI_FORMAT_NATIVE_UINT(obj_desc->region.address),
obj_desc->region.length));
/* Now the address and length are valid for this opregion */
obj_desc->region.flags |= AOPOBJ_DATA_VALID;
return_ACPI_STATUS(status);
}
ACPI_STATUS
LsAmlOffsetWalk (
ACPI_PARSE_OBJECT *Op,
UINT32 Level,
void *Context)
{
UINT32 FileId = (UINT32) ACPI_TO_INTEGER (Context);
ACPI_NAMESPACE_NODE *Node;
UINT32 Length;
UINT32 OffsetOfOpcode;
ACPI_PARSE_OBJECT *AddressOp;
/* Ignore actual data blocks for resource descriptors */
if (Op->Asl.CompileFlags & NODE_IS_RESOURCE_DATA)
{
return (AE_OK); /* Do NOT update the global AML offset */
}
/* We are only interested in named objects (have a namespace node) */
Node = Op->Asl.Node;
if (!Node)
{
Gbl_CurrentAmlOffset += Op->Asl.FinalAmlLength;
return (AE_OK);
}
/* Named resource descriptor (has a descriptor tag) */
if ((Node->Type == ACPI_TYPE_LOCAL_RESOURCE) &&
(Op->Asl.CompileFlags & NODE_IS_RESOURCE_DESC))
{
LsEmitOffsetTableEntry (FileId, Node, Gbl_CurrentAmlOffset,
Op->Asl.FinalAmlLength, Op->Asl.ParseOpName, 0, Op->Asl.Extra);
}
/* Named object -- Name (NameString, DataRefObject) */
else if (Op->Asl.AmlOpcode == AML_NAME_OP)
{
if (!Op->Asl.Child)
{
FlPrintFile (FileId, "%s NO CHILD!\n", MsgBuffer);
return (AE_OK);
}
Length = Op->Asl.FinalAmlLength;
/* Get to the NameSeg/NamePath Op (and length of the name) */
Op = Op->Asl.Child;
OffsetOfOpcode = Length + Op->Asl.FinalAmlLength;
/* Get actual value associated with the name */
Op = Op->Asl.Next;
switch (Op->Asl.AmlOpcode)
{
/*
* We are only interested in integer constants that can be changed
* at boot time. Note, the One/Ones/Zero opcodes are considered
* non-changeable, so we ignore them here.
*/
case AML_BYTE_OP:
case AML_WORD_OP:
case AML_DWORD_OP:
case AML_QWORD_OP:
/* The +1/-1 is to handle the integer size prefix (opcode) */
LsEmitOffsetTableEntry (FileId, Node,
(Gbl_CurrentAmlOffset + OffsetOfOpcode + 1),
(Op->Asl.FinalAmlLength - 1), Op->Asl.ParseOpName,
Op->Asl.Value.Integer, (UINT8) Op->Asl.AmlOpcode);
break;
default:
break;
}
Gbl_CurrentAmlOffset += Length;
return (AE_OK);
}
/* OperationRegion (NameString, RegionSpace, RegionOffset, RegionLength) */
else if (Op->Asl.AmlOpcode == AML_REGION_OP)
{
Length = Op->Asl.FinalAmlLength;
/* Get the name/namepath node */
AddressOp = Op->Asl.Child;
OffsetOfOpcode = Length + AddressOp->Asl.FinalAmlLength + 1;
/* Get the SpaceId node, then the Offset (address) node */
AddressOp = AddressOp->Asl.Next;
AddressOp = AddressOp->Asl.Next;
switch (AddressOp->Asl.AmlOpcode)
{
/*
* We are only interested in integer constants that can be changed
* at boot time. Note, the One/Ones/Zero opcodes are considered
* non-changeable, so we ignore them here.
*/
case AML_BYTE_OP:
case AML_WORD_OP:
case AML_DWORD_OP:
case AML_QWORD_OP:
/* The +1/-1 is to handle the integer size prefix (opcode) */
LsEmitOffsetTableEntry (FileId, Node,
(Gbl_CurrentAmlOffset + OffsetOfOpcode + 1),
(AddressOp->Asl.FinalAmlLength - 1), Op->Asl.ParseOpName,
AddressOp->Asl.Value.Integer, (UINT8) AddressOp->Asl.AmlOpcode);
Gbl_CurrentAmlOffset += Length;
return (AE_OK);
default:
break;
}
}
Gbl_CurrentAmlOffset += Op->Asl.FinalAmlLength;
return (AE_OK);
}
/*******************************************************************************
*
* FUNCTION: acpi_ns_root_initialize
*
* PARAMETERS: None
*
* RETURN: Status
*
* DESCRIPTION: Allocate and initialize the default root named objects
*
* MUTEX: Locks namespace for entire execution
*
******************************************************************************/
acpi_status acpi_ns_root_initialize(void)
{
acpi_status status;
const struct acpi_predefined_names *init_val = NULL;
struct acpi_namespace_node *new_node;
union acpi_operand_object *obj_desc;
acpi_string val = NULL;
ACPI_FUNCTION_TRACE(ns_root_initialize);
status = acpi_ut_acquire_mutex(ACPI_MTX_NAMESPACE);
if (ACPI_FAILURE(status)) {
return_ACPI_STATUS(status);
}
/*
* The global root ptr is initially NULL, so a non-NULL value indicates
* that acpi_ns_root_initialize() has already been called; just return.
*/
if (acpi_gbl_root_node) {
status = AE_OK;
goto unlock_and_exit;
}
/*
* Tell the rest of the subsystem that the root is initialized
* (This is OK because the namespace is locked)
*/
acpi_gbl_root_node = &acpi_gbl_root_node_struct;
/* Enter the pre-defined names in the name table */
ACPI_DEBUG_PRINT((ACPI_DB_INFO,
"Entering predefined entries into namespace\n"));
for (init_val = acpi_gbl_pre_defined_names; init_val->name; init_val++) {
/* _OSI is optional for now, will be permanent later */
if (!ACPI_STRCMP(init_val->name, "_OSI")
&& !acpi_gbl_create_osi_method) {
continue;
}
status = acpi_ns_lookup(NULL, init_val->name, init_val->type,
ACPI_IMODE_LOAD_PASS2,
ACPI_NS_NO_UPSEARCH, NULL, &new_node);
if (ACPI_FAILURE(status) || (!new_node)) { /* Must be on same line for code converter */
ACPI_EXCEPTION((AE_INFO, status,
"Could not create predefined name %s",
init_val->name));
}
/*
* Name entered successfully.
* If entry in pre_defined_names[] specifies an
* initial value, create the initial value.
*/
if (init_val->val) {
status = acpi_os_predefined_override(init_val, &val);
if (ACPI_FAILURE(status)) {
ACPI_ERROR((AE_INFO,
"Could not override predefined %s",
init_val->name));
}
if (!val) {
val = init_val->val;
}
/*
* Entry requests an initial value, allocate a
* descriptor for it.
*/
obj_desc =
acpi_ut_create_internal_object(init_val->type);
if (!obj_desc) {
status = AE_NO_MEMORY;
goto unlock_and_exit;
}
/*
* Convert value string from table entry to
* internal representation. Only types actually
* used for initial values are implemented here.
*/
switch (init_val->type) {
case ACPI_TYPE_METHOD:
obj_desc->method.param_count =
(u8) ACPI_TO_INTEGER(val);
obj_desc->common.flags |= AOPOBJ_DATA_VALID;
#if defined (ACPI_ASL_COMPILER)
/* Save the parameter count for the i_aSL compiler */
new_node->value = obj_desc->method.param_count;
#else
/* Mark this as a very SPECIAL method */
obj_desc->method.method_flags =
AML_METHOD_INTERNAL_ONLY;
obj_desc->method.implementation =
acpi_ut_osi_implementation;
#endif
break;
case ACPI_TYPE_INTEGER:
obj_desc->integer.value = ACPI_TO_INTEGER(val);
break;
case ACPI_TYPE_STRING:
/*
* Build an object around the static string
*/
obj_desc->string.length =
(u32) ACPI_STRLEN(val);
obj_desc->string.pointer = val;
obj_desc->common.flags |= AOPOBJ_STATIC_POINTER;
break;
case ACPI_TYPE_MUTEX:
obj_desc->mutex.node = new_node;
obj_desc->mutex.sync_level =
(u8) (ACPI_TO_INTEGER(val) - 1);
/* Create a mutex */
status =
acpi_os_create_mutex(&obj_desc->mutex.
os_mutex);
if (ACPI_FAILURE(status)) {
acpi_ut_remove_reference(obj_desc);
goto unlock_and_exit;
}
/* Special case for ACPI Global Lock */
if (ACPI_STRCMP(init_val->name, "_GL_") == 0) {
acpi_gbl_global_lock_mutex = obj_desc;
/* Create additional counting semaphore for global lock */
status =
acpi_os_create_semaphore(1, 0,
&acpi_gbl_global_lock_semaphore);
if (ACPI_FAILURE(status)) {
acpi_ut_remove_reference
(obj_desc);
goto unlock_and_exit;
}
}
break;
default:
ACPI_ERROR((AE_INFO,
"Unsupported initial type value %X",
init_val->type));
acpi_ut_remove_reference(obj_desc);
obj_desc = NULL;
continue;
}
/* Store pointer to value descriptor in the Node */
status = acpi_ns_attach_object(new_node, obj_desc,
ACPI_GET_OBJECT_TYPE
(obj_desc));
/* Remove local reference to the object */
acpi_ut_remove_reference(obj_desc);
}
}
unlock_and_exit:
(void)acpi_ut_release_mutex(ACPI_MTX_NAMESPACE);
/* Save a handle to "_GPE", it is always present */
if (ACPI_SUCCESS(status)) {
status = acpi_ns_get_node(NULL, "\\_GPE", ACPI_NS_NO_UPSEARCH,
&acpi_gbl_fadt_gpe_device);
}
return_ACPI_STATUS(status);
}
static void ACPI_SYSTEM_XFACE
AcpiDbMethodThread (
void *Context)
{
ACPI_STATUS Status;
ACPI_DB_METHOD_INFO *Info = Context;
ACPI_DB_METHOD_INFO LocalInfo;
UINT32 i;
UINT8 Allow;
ACPI_BUFFER ReturnObj;
/*
* AcpiGbl_DbMethodInfo.Arguments will be passed as method arguments.
* Prevent AcpiGbl_DbMethodInfo from being modified by multiple threads
* concurrently.
*
* Note: The arguments we are passing are used by the ASL test suite
* (aslts). Do not change them without updating the tests.
*/
(void) AcpiOsWaitSemaphore (Info->InfoGate, 1, ACPI_WAIT_FOREVER);
if (Info->InitArgs)
{
AcpiDbUInt32ToHexString (Info->NumCreated, Info->IndexOfThreadStr);
AcpiDbUInt32ToHexString (ACPI_TO_INTEGER (AcpiOsGetThreadId ()),
Info->IdOfThreadStr);
}
if (Info->Threads && (Info->NumCreated < Info->NumThreads))
{
Info->Threads[Info->NumCreated++] =
ACPI_TO_INTEGER (AcpiOsGetThreadId());
}
LocalInfo = *Info;
LocalInfo.Args = LocalInfo.Arguments;
LocalInfo.Arguments[0] = LocalInfo.NumThreadsStr;
LocalInfo.Arguments[1] = LocalInfo.IdOfThreadStr;
LocalInfo.Arguments[2] = LocalInfo.IndexOfThreadStr;
LocalInfo.Arguments[3] = NULL;
(void) AcpiOsSignalSemaphore (Info->InfoGate, 1);
for (i = 0; i < Info->NumLoops; i++)
{
Status = AcpiDbExecuteMethod (&LocalInfo, &ReturnObj);
if (ACPI_FAILURE (Status))
{
AcpiOsPrintf ("%s During execution of %s at iteration %X\n",
AcpiFormatException (Status), Info->Pathname, i);
if (Status == AE_ABORT_METHOD)
{
break;
}
}
#if 0
if ((i % 100) == 0)
{
AcpiOsPrintf ("%d executions, Thread 0x%x\n", i, AcpiOsGetThreadId ());
}
if (ReturnObj.Length)
{
AcpiOsPrintf ("Execution of %s returned object %p Buflen %X\n",
Info->Pathname, ReturnObj.Pointer, (UINT32) ReturnObj.Length);
AcpiDbDumpExternalObject (ReturnObj.Pointer, 1);
}
#endif
}
/* Signal our completion */
Allow = 0;
(void) AcpiOsWaitSemaphore (Info->ThreadCompleteGate, 1, ACPI_WAIT_FOREVER);
Info->NumCompleted++;
if (Info->NumCompleted == Info->NumThreads)
{
/* Do signal for main thread once only */
Allow = 1;
}
(void) AcpiOsSignalSemaphore (Info->ThreadCompleteGate, 1);
if (Allow)
{
Status = AcpiOsSignalSemaphore (Info->MainThreadGate, 1);
if (ACPI_FAILURE (Status))
{
AcpiOsPrintf ("Could not signal debugger thread sync semaphore, %s\n",
AcpiFormatException (Status));
}
}
}