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reactos/drivers/bus/acpi/busmgr/utils.c

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/*
* acpi_utils.c - ACPI Utility Functions ($Revision: 10 $)
*
* Copyright (C) 2001, 2002 Andy Grover <andrew.grover@intel.com>
* Copyright (C) 2001, 2002 Paul Diefenbaugh <paul.s.diefenbaugh@intel.com>
*
* ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or (at
* your option) any later version.
*
* This program is distributed in the hope that it will be useful, but
* WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* General Public License for more details.
*
* You should have received a copy of the GNU General Public License along
* with this program; if not, write to the Free Software Foundation, Inc.,
* 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA.
*
* ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
*/
#include <precomp.h>
#include <ntstrsafe.h>
#define NDEBUG
#include <debug.h>
/* Modified for ReactOS and latest ACPICA
* Copyright (C)2009 Samuel Serapion
*/
#define _COMPONENT ACPI_BUS_COMPONENT
ACPI_MODULE_NAME ("acpi_utils")
static void
acpi_util_eval_error(ACPI_HANDLE h, ACPI_STRING p, ACPI_STATUS s)
{
#ifdef ACPI_DEBUG_OUTPUT
char prefix[80] = {'\0'};
ACPI_BUFFER buffer = {sizeof(prefix), prefix};
AcpiGetName(h, ACPI_FULL_PATHNAME, &buffer);
ACPI_DEBUG_PRINT((ACPI_DB_INFO, "Evaluate [%s.%s]: %s\n",
(char *) prefix, p, AcpiFormatException(s)));
#else
return;
#endif
}
/* --------------------------------------------------------------------------
Object Evaluation Helpers
-------------------------------------------------------------------------- */
ACPI_STATUS
acpi_extract_package (
ACPI_OBJECT *package,
ACPI_BUFFER *format,
ACPI_BUFFER *buffer)
{
UINT32 size_required = 0;
UINT32 tail_offset = 0;
char *format_string = NULL;
UINT32 format_count = 0;
UINT32 i = 0;
UINT8 *head = NULL;
UINT8 *tail = NULL;
if (!package || (package->Type != ACPI_TYPE_PACKAGE) || (package->Package.Count < 1)) {
ACPI_DEBUG_PRINT((ACPI_DB_WARN, "Invalid 'package' argument\n"));
return_ACPI_STATUS(AE_BAD_PARAMETER);
}
if (!format || !format->Pointer || (format->Length < 1)) {
ACPI_DEBUG_PRINT((ACPI_DB_WARN, "Invalid 'format' argument\n"));
return_ACPI_STATUS(AE_BAD_PARAMETER);
}
if (!buffer) {
ACPI_DEBUG_PRINT((ACPI_DB_WARN, "Invalid 'buffer' argument\n"));
return_ACPI_STATUS(AE_BAD_PARAMETER);
}
format_count = (format->Length/sizeof(char)) - 1;
if (format_count > package->Package.Count) {
ACPI_DEBUG_PRINT((ACPI_DB_WARN, "Format specifies more objects [%d] than exist in package [%d].", format_count, package->package.count));
return_ACPI_STATUS(AE_BAD_DATA);
}
format_string = format->Pointer;
/*
* Calculate size_required.
*/
for (i=0; i<format_count; i++) {
ACPI_OBJECT *element = &(package->Package.Elements[i]);
if (!element) {
return_ACPI_STATUS(AE_BAD_DATA);
}
switch (element->Type) {
case ACPI_TYPE_INTEGER:
switch (format_string[i]) {
case 'N':
size_required += sizeof(ACPI_INTEGER);
tail_offset += sizeof(ACPI_INTEGER);
break;
case 'S':
size_required += sizeof(char*) + sizeof(ACPI_INTEGER) + sizeof(char);
tail_offset += sizeof(char*);
break;
default:
ACPI_DEBUG_PRINT((ACPI_DB_WARN, "Invalid package element [%d]: got number, expecting [%c].\n", i, format_string[i]));
return_ACPI_STATUS(AE_BAD_DATA);
break;
}
break;
case ACPI_TYPE_STRING:
case ACPI_TYPE_BUFFER:
switch (format_string[i]) {
case 'S':
size_required += sizeof(char*) + (element->String.Length * sizeof(char)) + sizeof(char);
tail_offset += sizeof(char*);
break;
case 'B':
size_required += sizeof(UINT8*) + (element->Buffer.Length * sizeof(UINT8));
tail_offset += sizeof(UINT8*);
break;
default:
ACPI_DEBUG_PRINT((ACPI_DB_WARN, "Invalid package element [%d] got string/buffer, expecting [%c].\n", i, format_string[i]));
return_ACPI_STATUS(AE_BAD_DATA);
break;
}
break;
case ACPI_TYPE_PACKAGE:
default:
ACPI_DEBUG_PRINT((ACPI_DB_INFO, "Found unsupported element at index=%d\n", i));
/* TBD: handle nested packages... */
return_ACPI_STATUS(AE_SUPPORT);
break;
}
}
/*
* Validate output buffer.
*/
if (buffer->Length < size_required) {
buffer->Length = size_required;
return_ACPI_STATUS(AE_BUFFER_OVERFLOW);
}
else if (buffer->Length != size_required || !buffer->Pointer) {
return_ACPI_STATUS(AE_BAD_PARAMETER);
}
head = buffer->Pointer;
tail = ((PUCHAR)buffer->Pointer) + tail_offset;
/*
* Extract package data.
*/
for (i=0; i<format_count; i++) {
UINT8 **pointer = NULL;
ACPI_OBJECT *element = &(package->Package.Elements[i]);
if (!element) {
return_ACPI_STATUS(AE_BAD_DATA);
}
switch (element->Type) {
case ACPI_TYPE_INTEGER:
switch (format_string[i]) {
case 'N':
*((ACPI_INTEGER*)head) = element->Integer.Value;
head += sizeof(ACPI_INTEGER);
break;
case 'S':
pointer = (UINT8**)head;
*pointer = tail;
*((ACPI_INTEGER*)tail) = element->Integer.Value;
head += sizeof(ACPI_INTEGER*);
tail += sizeof(ACPI_INTEGER);
/* NULL terminate string */
*tail = (char)0;
tail += sizeof(char);
break;
default:
/* Should never get here */
break;
}
break;
case ACPI_TYPE_STRING:
case ACPI_TYPE_BUFFER:
switch (format_string[i]) {
case 'S':
pointer = (UINT8**)head;
*pointer = tail;
memcpy(tail, element->String.Pointer, element->String.Length);
head += sizeof(char*);
tail += element->String.Length * sizeof(char);
/* NULL terminate string */
*tail = (char)0;
tail += sizeof(char);
break;
case 'B':
pointer = (UINT8**)head;
*pointer = tail;
memcpy(tail, element->Buffer.Pointer, element->Buffer.Length);
head += sizeof(UINT8*);
tail += element->Buffer.Length * sizeof(UINT8);
break;
default:
/* Should never get here */
break;
}
break;
case ACPI_TYPE_PACKAGE:
/* TBD: handle nested packages... */
default:
/* Should never get here */
break;
}
}
return_ACPI_STATUS(AE_OK);
}
ACPI_STATUS
acpi_evaluate_integer (
ACPI_HANDLE handle,
ACPI_STRING pathname,
ACPI_OBJECT_LIST *arguments,
unsigned long long *data)
{
ACPI_STATUS status = AE_OK;
ACPI_OBJECT element;
ACPI_BUFFER buffer = {sizeof(ACPI_OBJECT), &element};
ACPI_FUNCTION_TRACE("acpi_evaluate_integer");
if (!data)
return_ACPI_STATUS(AE_BAD_PARAMETER);
status = AcpiEvaluateObject(handle, pathname, arguments, &buffer);
if (ACPI_FAILURE(status)) {
acpi_util_eval_error(handle, pathname, status);
return_ACPI_STATUS(status);
}
if (element.Type != ACPI_TYPE_INTEGER) {
acpi_util_eval_error(handle, pathname, AE_BAD_DATA);
return_ACPI_STATUS(AE_BAD_DATA);
}
*data = element.Integer.Value;
ACPI_DEBUG_PRINT((ACPI_DB_INFO, "Return value [%lu]\n", *data));
return_ACPI_STATUS(AE_OK);
}
ACPI_STATUS
acpi_evaluate_reference (
ACPI_HANDLE handle,
ACPI_STRING pathname,
ACPI_OBJECT_LIST *arguments,
struct acpi_handle_list *list)
{
ACPI_STATUS status = AE_OK;
ACPI_OBJECT *package = NULL;
ACPI_OBJECT *element = NULL;
ACPI_BUFFER buffer = {ACPI_ALLOCATE_BUFFER, NULL};
UINT32 i = 0;
ACPI_FUNCTION_TRACE("acpi_evaluate_reference");
if (!list) {
return_ACPI_STATUS(AE_BAD_PARAMETER);
}
/* Evaluate object. */
status = AcpiEvaluateObject(handle, pathname, arguments, &buffer);
if (ACPI_FAILURE(status))
goto end;
package = (ACPI_OBJECT *) buffer.Pointer;
if ((buffer.Length == 0) || !package) {
ACPI_DEBUG_PRINT((ACPI_DB_ERROR,
"No return object (len %X ptr %p)\n",
buffer.Length, package));
status = AE_BAD_DATA;
acpi_util_eval_error(handle, pathname, status);
goto end;
}
if (package->Type != ACPI_TYPE_PACKAGE) {
ACPI_DEBUG_PRINT((ACPI_DB_ERROR,
"Expecting a [Package], found type %X\n",
package->Type));
status = AE_BAD_DATA;
acpi_util_eval_error(handle, pathname, status);
goto end;
}
if (!package->Package.Count) {
ACPI_DEBUG_PRINT((ACPI_DB_ERROR,
"[Package] has zero elements (%p)\n",
package));
status = AE_BAD_DATA;
acpi_util_eval_error(handle, pathname, status);
goto end;
}
if (package->Package.Count > ACPI_MAX_HANDLES) {
return AE_NO_MEMORY;
}
list->count = package->Package.Count;
/* Extract package data. */
for (i = 0; i < list->count; i++) {
element = &(package->Package.Elements[i]);
if (element->Type != ACPI_TYPE_LOCAL_REFERENCE) {
status = AE_BAD_DATA;
ACPI_DEBUG_PRINT((ACPI_DB_ERROR,
"Expecting a [Reference] package element, found type %X\n",
element->type));
acpi_util_eval_error(handle, pathname, status);
break;
}
if (!element->Reference.Handle) {
ACPI_DEBUG_PRINT((ACPI_DB_ERROR, "Invalid reference in"
" package %s\n", pathname));
status = AE_NULL_ENTRY;
break;
}
/* Get the ACPI_HANDLE. */
list->handles[i] = element->Reference.Handle;
ACPI_DEBUG_PRINT((ACPI_DB_INFO, "Found reference [%p]\n",
list->handles[i]));
}
end:
if (ACPI_FAILURE(status)) {
list->count = 0;
//ExFreePool(list->handles);
}
if (buffer.Pointer)
AcpiOsFree(buffer.Pointer);
return_ACPI_STATUS(status);
}
NTSTATUS
acpi_create_registry_table(HANDLE ParentKeyHandle, ACPI_TABLE_HEADER *OutTable, PCWSTR KeyName)
{
OBJECT_ATTRIBUTES ObjectAttributes;
UNICODE_STRING HardwareKeyName, ValueName;
ANSI_STRING HardwareKeyNameA;
HANDLE KeyHandle = NULL, SubKeyHandle = NULL;
NTSTATUS Status;
char OemId[7] = { 0 }; /* exactly one byte more than ACPI_TABLE_HEADER->OemId */
char OemTableId[9] = { 0 }; /* exactly one byte more than ACPI_TABLE_HEADER->OemTableId */
WCHAR OemRevision[9] = { 0 }; /* enough to accept hex DWORD */
C_ASSERT(sizeof(OemId) == RTL_FIELD_SIZE(ACPI_TABLE_HEADER, OemId) + 1);
C_ASSERT(sizeof(OemTableId) == RTL_FIELD_SIZE(ACPI_TABLE_HEADER, OemTableId) + 1);
/* Copy OEM data from the table */
RtlCopyMemory(OemId, OutTable->OemId, sizeof(OutTable->OemId));
RtlCopyMemory(OemTableId, OutTable->OemTableId, sizeof(OutTable->OemTableId));
/* Create table subkey */
RtlInitUnicodeString(&HardwareKeyName, KeyName);
InitializeObjectAttributes(&ObjectAttributes,
&HardwareKeyName,
OBJ_CASE_INSENSITIVE | OBJ_KERNEL_HANDLE,
ParentKeyHandle,
NULL);
Status = ZwCreateKey(&KeyHandle,
KEY_WRITE,
&ObjectAttributes,
0,
NULL,
REG_OPTION_VOLATILE,
NULL);
if (!NT_SUCCESS(Status))
{
DPRINT1("ZwCreateKey() for %ws failed (Status 0x%08lx)\n", KeyName, Status);
return Status;
}
if (OutTable->OemRevision != 0)
{
/* We have OEM info in table, so create other OEM subkeys */
RtlInitAnsiString(&HardwareKeyNameA, OemId);
Status = RtlAnsiStringToUnicodeString(&HardwareKeyName, &HardwareKeyNameA, TRUE);
if (!NT_SUCCESS(Status))
{
DPRINT1("RtlAnsiStringToUnicodeString() for %s failed (Status 0x%08lx)\n", HardwareKeyNameA, Status);
return Status;
}
InitializeObjectAttributes(&ObjectAttributes,
&HardwareKeyName,
OBJ_CASE_INSENSITIVE | OBJ_KERNEL_HANDLE,
KeyHandle,
NULL);
Status = ZwCreateKey(&SubKeyHandle,
KEY_WRITE,
&ObjectAttributes,
0,
NULL,
REG_OPTION_VOLATILE,
NULL);
RtlFreeUnicodeString(&HardwareKeyName);
ZwClose(KeyHandle);
if (!NT_SUCCESS(Status))
{
DPRINT1("ZwCreateKey() for %s failed (Status 0x%08lx)\n", HardwareKeyNameA, Status);
return Status;
}
KeyHandle = SubKeyHandle;
RtlInitAnsiString(&HardwareKeyNameA, OemTableId);
Status = RtlAnsiStringToUnicodeString(&HardwareKeyName, &HardwareKeyNameA, TRUE);
if (!NT_SUCCESS(Status))
{
DPRINT1("RtlAnsiStringToUnicodeString() for %s failed (Status 0x%08lx)\n", HardwareKeyNameA, Status);
return Status;
}
InitializeObjectAttributes(&ObjectAttributes,
&HardwareKeyName,
OBJ_CASE_INSENSITIVE | OBJ_KERNEL_HANDLE,
KeyHandle,
NULL);
Status = ZwCreateKey(&SubKeyHandle,
KEY_WRITE,
&ObjectAttributes,
0,
NULL,
REG_OPTION_VOLATILE,
NULL);
RtlFreeUnicodeString(&HardwareKeyName);
ZwClose(KeyHandle);
if (!NT_SUCCESS(Status))
{
DPRINT1("ZwCreateKey() for %s failed (Status 0x%08lx)\n", HardwareKeyNameA, Status);
return Status;
}
KeyHandle = SubKeyHandle;
Status = RtlStringCbPrintfW(OemRevision,
sizeof(OemRevision),
L"%08X",
OutTable->OemRevision);
if (!NT_SUCCESS(Status))
{
DPRINT1("RtlStringCbPrintfW() for 0x%08lx failed (Status 0x%08lx)\n", OutTable->OemRevision, Status);
return Status;
}
RtlInitUnicodeString(&HardwareKeyName, OemRevision);
InitializeObjectAttributes(&ObjectAttributes,
&HardwareKeyName,
OBJ_CASE_INSENSITIVE | OBJ_KERNEL_HANDLE,
KeyHandle,
NULL);
Status = ZwCreateKey(&SubKeyHandle,
KEY_WRITE,
&ObjectAttributes,
0,
NULL,
REG_OPTION_VOLATILE,
NULL);
ZwClose(KeyHandle);
if (!NT_SUCCESS(Status))
{
DPRINT1("ZwCreateKey() for %ws failed (Status 0x%08lx)\n", KeyName, Status);
return Status;
}
KeyHandle = SubKeyHandle;
}
/* Table reg value name is always '00000000' */
RtlInitUnicodeString(&ValueName,
L"00000000");
Status = ZwSetValueKey(KeyHandle,
&ValueName,
0,
REG_BINARY,
OutTable,
OutTable->Length);
ZwClose(KeyHandle);
if (!NT_SUCCESS(Status))
{
DPRINT1("ZwSetValueKey() failed (Status 0x%08lx)\n", Status);
return Status;
}
return STATUS_SUCCESS;
}
NTSTATUS
acpi_create_volatile_registry_tables(void)
{
OBJECT_ATTRIBUTES ObjectAttributes;
UNICODE_STRING HardwareKeyName = RTL_CONSTANT_STRING(L"\\Registry\\Machine\\HARDWARE\\ACPI");
HANDLE KeyHandle = NULL;
NTSTATUS Status;
ACPI_STATUS AcpiStatus;
ACPI_TABLE_HEADER *OutTable;
ACPI_PHYSICAL_ADDRESS RsdpAddress;
ACPI_TABLE_RSDP *Rsdp;
ACPI_PHYSICAL_ADDRESS Address;
UINT32 TableEntrySize;
/* Create Main Hardware ACPI key*/
InitializeObjectAttributes(&ObjectAttributes,
&HardwareKeyName,
OBJ_CASE_INSENSITIVE | OBJ_KERNEL_HANDLE,
NULL,
NULL);
Status = ZwCreateKey(&KeyHandle,
KEY_WRITE,
&ObjectAttributes,
0,
NULL,
REG_OPTION_VOLATILE,
NULL);
if (!NT_SUCCESS(Status))
{
DPRINT1("ZwCreateKey() for ACPI failed (Status 0x%08lx)\n", Status);
return Status;
}
/* Read DSDT table */
AcpiStatus = AcpiGetTable(ACPI_SIG_DSDT, 0, &OutTable);
if (ACPI_FAILURE(AcpiStatus))
{
DPRINT1("AcpiGetTable() for DSDT failed (Status 0x%08lx)\n", AcpiStatus);
Status = STATUS_UNSUCCESSFUL;
goto done;
}
/* Dump DSDT table */
Status = acpi_create_registry_table(KeyHandle, OutTable, L"DSDT");
if (!NT_SUCCESS(Status))
{
DPRINT1("acpi_dump_table_to_registry() for DSDT failed (Status 0x%08lx)\n", Status);
goto done;
}
/* Read FACS table */
AcpiStatus = AcpiGetTable(ACPI_SIG_FACS, 0, &OutTable);
if (ACPI_FAILURE(AcpiStatus))
{
DPRINT1("AcpiGetTable() for FACS failed (Status 0x%08lx)\n", AcpiStatus);
Status = STATUS_UNSUCCESSFUL;
goto done;
}
/* Dump FACS table */
Status = acpi_create_registry_table(KeyHandle, OutTable, L"FACS");
if (!NT_SUCCESS(Status))
{
DPRINT1("acpi_dump_table_to_registry() for FACS failed (Status 0x%08lx)\n", Status);
goto done;
}
/* Read FACS table */
AcpiStatus = AcpiGetTable(ACPI_SIG_FADT, 0, &OutTable);
if (ACPI_FAILURE(AcpiStatus))
{
DPRINT1("AcpiGetTable() for FADT failed (Status 0x%08lx)\n", AcpiStatus);
Status = STATUS_UNSUCCESSFUL;
goto done;
}
/* Dump FADT table */
Status = acpi_create_registry_table(KeyHandle, OutTable, L"FADT");
if (!NT_SUCCESS(Status))
{
DPRINT1("acpi_dump_table_to_registry() for FADT failed (Status 0x%08lx)\n", Status);
goto done;
}
/* This is a rough copy from ACPICA reading of RSDT/XSDT and added to avoid patching acpica */
RsdpAddress = AcpiOsGetRootPointer();
/* Map the entire RSDP and extract the address of the RSDT or XSDT */
Rsdp = AcpiOsMapMemory(RsdpAddress, sizeof(ACPI_TABLE_RSDP));
if (!Rsdp)
{
DPRINT1("AcpiOsMapMemory() failed\n");
Status = STATUS_NO_MEMORY;
goto done;
}
/* Use XSDT if present and not overridden. Otherwise, use RSDT */
if ((Rsdp->Revision > 1) &&
Rsdp->XsdtPhysicalAddress &&
!AcpiGbl_DoNotUseXsdt)
{
/*
* RSDP contains an XSDT (64-bit physical addresses). We must use
* the XSDT if the revision is > 1 and the XSDT pointer is present,
* as per the ACPI specification.
*/
Address = (ACPI_PHYSICAL_ADDRESS)Rsdp->XsdtPhysicalAddress;
TableEntrySize = ACPI_XSDT_ENTRY_SIZE;
}
else
{
/* Root table is an RSDT (32-bit physical addresses) */
Address = (ACPI_PHYSICAL_ADDRESS)Rsdp->RsdtPhysicalAddress;
TableEntrySize = ACPI_RSDT_ENTRY_SIZE;
}
/*
* It is not possible to map more than one entry in some environments,
* so unmap the RSDP here before mapping other tables
*/
AcpiOsUnmapMemory(Rsdp, sizeof(ACPI_TABLE_RSDP));
OutTable = AcpiOsMapMemory(Address, TableEntrySize);
if (!OutTable)
{
DPRINT1("AcpiOsMapMemory() failed\n");
Status = STATUS_NO_MEMORY;
goto done;
}
/* Dump RSDT table */
Status = acpi_create_registry_table(KeyHandle, OutTable, L"RSDT");
AcpiOsUnmapMemory(OutTable, TableEntrySize);
if (!NT_SUCCESS(Status))
{
DPRINT1("acpi_dump_table_to_registry() for RSDT failed (Status 0x%08lx)\n", Status);
}
done:
ZwClose(KeyHandle);
return Status;
}
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