[ACPI] ACPICA 20051021
Implemented support for the EM64T and other x86_64 processors. This essentially entails recognizing that these processors support non-aligned memory transfers. Previously, all 64-bit processors were assumed to lack hardware support for non-aligned transfers. Completed conversion of the Resource Manager to nearly full table-driven operation. Specifically, the resource conversion code (convert AML to internal format and the reverse) and the debug code to dump internal resource descriptors are fully table-driven, reducing code and data size and improving maintainability. The OSL interfaces for Acquire and Release Lock now use a 64-bit flag word on 64-bit processors instead of a fixed 32-bit word. (Alexey Starikovskiy) Implemented support within the resource conversion code for the Type-Specific byte within the various ACPI 3.0 *WordSpace macros. Fixed some issues within the resource conversion code for the type-specific flags for both Memory and I/O address resource descriptors. For Memory, implemented support for the MTP and TTP flags. For I/O, split the TRS and TTP flags into two separate fields. Signed-off-by: Bob Moore <robert.moore@intel.com> Signed-off-by: Len Brown <len.brown@intel.com>
This commit is contained in:
Bob Moore
Len Brown
@@ -43,6 +43,7 @@
|
||||
|
||||
#include <acpi/acpi.h>
|
||||
#include <acpi/acnamesp.h>
|
||||
#include <acpi/amlresrc.h>
|
||||
|
||||
#define _COMPONENT ACPI_UTILITIES
|
||||
ACPI_MODULE_NAME("utmisc")
|
||||
@@ -788,6 +789,113 @@ u8 acpi_ut_generate_checksum(u8 * buffer, u32 length)
|
||||
return ((u8) (0 - sum));
|
||||
}
|
||||
|
||||
/*******************************************************************************
|
||||
*
|
||||
* FUNCTION: acpi_ut_get_resource_type
|
||||
*
|
||||
* PARAMETERS: Aml - Pointer to the raw AML resource descriptor
|
||||
*
|
||||
* RETURN: The Resource Type with no extraneous bits (except the
|
||||
* Large/Small descriptor bit -- this is left alone)
|
||||
*
|
||||
* DESCRIPTION: Extract the Resource Type/Name from the first byte of
|
||||
* a resource descriptor.
|
||||
*
|
||||
******************************************************************************/
|
||||
|
||||
u8 acpi_ut_get_resource_type(void *aml)
|
||||
{
|
||||
ACPI_FUNCTION_ENTRY();
|
||||
|
||||
/*
|
||||
* Byte 0 contains the descriptor name (Resource Type)
|
||||
* Determine if this is a small or large resource
|
||||
*/
|
||||
if (*((u8 *) aml) & ACPI_RESOURCE_NAME_LARGE) {
|
||||
/* Large Resource Type -- bits 6:0 contain the name */
|
||||
|
||||
return (*((u8 *) aml));
|
||||
} else {
|
||||
/* Small Resource Type -- bits 6:3 contain the name */
|
||||
|
||||
return ((u8) (*((u8 *) aml) & ACPI_RESOURCE_NAME_SMALL_MASK));
|
||||
}
|
||||
}
|
||||
|
||||
/*******************************************************************************
|
||||
*
|
||||
* FUNCTION: acpi_ut_get_resource_length
|
||||
*
|
||||
* PARAMETERS: Aml - Pointer to the raw AML resource descriptor
|
||||
*
|
||||
* RETURN: Byte Length
|
||||
*
|
||||
* DESCRIPTION: Get the "Resource Length" of a raw AML descriptor. By
|
||||
* definition, this does not include the size of the descriptor
|
||||
* header or the length field itself.
|
||||
*
|
||||
******************************************************************************/
|
||||
|
||||
u16 acpi_ut_get_resource_length(void *aml)
|
||||
{
|
||||
u16 resource_length;
|
||||
|
||||
ACPI_FUNCTION_ENTRY();
|
||||
|
||||
/*
|
||||
* Byte 0 contains the descriptor name (Resource Type)
|
||||
* Determine if this is a small or large resource
|
||||
*/
|
||||
if (*((u8 *) aml) & ACPI_RESOURCE_NAME_LARGE) {
|
||||
/* Large Resource type -- bytes 1-2 contain the 16-bit length */
|
||||
|
||||
ACPI_MOVE_16_TO_16(&resource_length, &((u8 *) aml)[1]);
|
||||
|
||||
} else {
|
||||
/* Small Resource type -- bits 2:0 of byte 0 contain the length */
|
||||
|
||||
resource_length = (u16) (*((u8 *) aml) &
|
||||
ACPI_RESOURCE_NAME_SMALL_LENGTH_MASK);
|
||||
}
|
||||
|
||||
return (resource_length);
|
||||
}
|
||||
|
||||
/*******************************************************************************
|
||||
*
|
||||
* FUNCTION: acpi_ut_get_descriptor_length
|
||||
*
|
||||
* PARAMETERS: Aml - Pointer to the raw AML resource descriptor
|
||||
*
|
||||
* RETURN: Byte length
|
||||
*
|
||||
* DESCRIPTION: Get the total byte length of a raw AML descriptor, including the
|
||||
* length of the descriptor header and the length field itself.
|
||||
* Used to walk descriptor lists.
|
||||
*
|
||||
******************************************************************************/
|
||||
|
||||
u32 acpi_ut_get_descriptor_length(void *aml)
|
||||
{
|
||||
u32 descriptor_length;
|
||||
|
||||
ACPI_FUNCTION_ENTRY();
|
||||
|
||||
/* First get the Resource Length (Does not include header length) */
|
||||
|
||||
descriptor_length = acpi_ut_get_resource_length(aml);
|
||||
|
||||
/* Determine if this is a small or large resource */
|
||||
|
||||
if (*((u8 *) aml) & ACPI_RESOURCE_NAME_LARGE) {
|
||||
descriptor_length += sizeof(struct aml_resource_large_header);
|
||||
} else {
|
||||
descriptor_length += sizeof(struct aml_resource_small_header);
|
||||
}
|
||||
|
||||
return (descriptor_length);
|
||||
}
|
||||
|
||||
/*******************************************************************************
|
||||
*
|
||||
* FUNCTION: acpi_ut_get_resource_end_tag
|
||||
@@ -796,42 +904,34 @@ u8 acpi_ut_generate_checksum(u8 * buffer, u32 length)
|
||||
*
|
||||
* RETURN: Pointer to the end tag
|
||||
*
|
||||
* DESCRIPTION: Find the END_TAG resource descriptor in a resource template
|
||||
* DESCRIPTION: Find the END_TAG resource descriptor in an AML resource template
|
||||
*
|
||||
******************************************************************************/
|
||||
|
||||
u8 *acpi_ut_get_resource_end_tag(union acpi_operand_object * obj_desc)
|
||||
{
|
||||
u8 buffer_byte;
|
||||
u8 *buffer;
|
||||
u8 *end_buffer;
|
||||
u8 *aml;
|
||||
u8 *end_aml;
|
||||
|
||||
buffer = obj_desc->buffer.pointer;
|
||||
end_buffer = buffer + obj_desc->buffer.length;
|
||||
aml = obj_desc->buffer.pointer;
|
||||
end_aml = aml + obj_desc->buffer.length;
|
||||
|
||||
while (buffer < end_buffer) {
|
||||
buffer_byte = *buffer;
|
||||
if (buffer_byte & ACPI_RESOURCE_NAME_LARGE) {
|
||||
/* Large Descriptor - Length is next 2 bytes */
|
||||
/* Walk the resource template, one descriptor per loop */
|
||||
|
||||
buffer += ((*(buffer + 1) | (*(buffer + 2) << 8)) + 3);
|
||||
} else {
|
||||
/* Small Descriptor. End Tag will be found here */
|
||||
while (aml < end_aml) {
|
||||
if (acpi_ut_get_resource_type(aml) ==
|
||||
ACPI_RESOURCE_NAME_END_TAG) {
|
||||
/* Found the end_tag descriptor, all done */
|
||||
|
||||
if ((buffer_byte & ACPI_RESOURCE_NAME_SMALL_MASK) ==
|
||||
ACPI_RESOURCE_NAME_END_TAG) {
|
||||
/* Found the end tag descriptor, all done. */
|
||||
|
||||
return (buffer);
|
||||
}
|
||||
|
||||
/* Length is in the header */
|
||||
|
||||
buffer += ((buffer_byte & 0x07) + 1);
|
||||
return (aml);
|
||||
}
|
||||
|
||||
/* Point to the next resource descriptor */
|
||||
|
||||
aml += acpi_ut_get_resource_length(aml);
|
||||
}
|
||||
|
||||
/* End tag not found */
|
||||
/* End tag was not found */
|
||||
|
||||
return (NULL);
|
||||
}
|
||||
|
||||
Reference in New Issue
Block a user