void
AcpiRsSetResourceLength (
ACPI_RSDESC_SIZE TotalLength,
AML_RESOURCE *Aml)
{
ACPI_RS_LENGTH ResourceLength;
ACPI_FUNCTION_ENTRY ();
/* Length is the total descriptor length minus the header length */
ResourceLength = (ACPI_RS_LENGTH)
(TotalLength - AcpiUtGetResourceHeaderLength (Aml));
/* Length is stored differently for large and small descriptors */
if (Aml->SmallHeader.DescriptorType & ACPI_RESOURCE_NAME_LARGE)
{
/* Large descriptor -- bytes 1-2 contain the 16-bit length */
ACPI_MOVE_16_TO_16 (&Aml->LargeHeader.ResourceLength, &ResourceLength);
}
else
{
/* Small descriptor -- bits 2:0 of byte 0 contain the length */
Aml->SmallHeader.DescriptorType = (UINT8)
/* Clear any existing length, preserving descriptor type bits */
((Aml->SmallHeader.DescriptorType & ~ACPI_RESOURCE_NAME_SMALL_LENGTH_MASK)
| ResourceLength);
}
}
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:
ACPI_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;
}
}
}
ACPI_STATUS
AcpiRsGetListLength (
UINT8 *AmlBuffer,
UINT32 AmlBufferLength,
ACPI_SIZE *SizeNeeded)
{
ACPI_STATUS Status;
UINT8 *EndAml;
UINT8 *Buffer;
UINT32 BufferSize;
UINT16 Temp16;
UINT16 ResourceLength;
UINT32 ExtraStructBytes;
UINT8 ResourceIndex;
UINT8 MinimumAmlResourceLength;
ACPI_FUNCTION_TRACE (RsGetListLength);
*SizeNeeded = 0;
EndAml = AmlBuffer + AmlBufferLength;
/* Walk the list of AML resource descriptors */
while (AmlBuffer < EndAml)
{
/* Validate the Resource Type and Resource Length */
Status = AcpiUtValidateResource (AmlBuffer, &ResourceIndex);
if (ACPI_FAILURE (Status))
{
return_ACPI_STATUS (Status);
}
/* Get the resource length and base (minimum) AML size */
ResourceLength = AcpiUtGetResourceLength (AmlBuffer);
MinimumAmlResourceLength = AcpiGbl_ResourceAmlSizes[ResourceIndex];
/*
* Augment the size for descriptors with optional
* and/or variable length fields
*/
ExtraStructBytes = 0;
Buffer = AmlBuffer + AcpiUtGetResourceHeaderLength (AmlBuffer);
switch (AcpiUtGetResourceType (AmlBuffer))
{
case ACPI_RESOURCE_NAME_IRQ:
/*
* IRQ Resource:
* Get the number of bits set in the 16-bit IRQ mask
*/
ACPI_MOVE_16_TO_16 (&Temp16, Buffer);
ExtraStructBytes = AcpiRsCountSetBits (Temp16);
break;
case ACPI_RESOURCE_NAME_DMA:
/*
* DMA Resource:
* Get the number of bits set in the 8-bit DMA mask
*/
ExtraStructBytes = AcpiRsCountSetBits (*Buffer);
break;
case ACPI_RESOURCE_NAME_VENDOR_SMALL:
case ACPI_RESOURCE_NAME_VENDOR_LARGE:
/*
* Vendor Resource:
* Get the number of vendor data bytes
*/
ExtraStructBytes = ResourceLength;
break;
case ACPI_RESOURCE_NAME_END_TAG:
/*
* End Tag:
* This is the normal exit, add size of EndTag
*/
*SizeNeeded += ACPI_RS_SIZE_MIN;
return_ACPI_STATUS (AE_OK);
case ACPI_RESOURCE_NAME_ADDRESS32:
case ACPI_RESOURCE_NAME_ADDRESS16:
case ACPI_RESOURCE_NAME_ADDRESS64:
/*
* Address Resource:
* Add the size of the optional ResourceSource
*/
ExtraStructBytes = AcpiRsStreamOptionLength (
ResourceLength, MinimumAmlResourceLength);
break;
case ACPI_RESOURCE_NAME_EXTENDED_IRQ:
/*
* Extended IRQ Resource:
* Using the InterruptTableLength, add 4 bytes for each additional
* interrupt. Note: at least one interrupt is required and is
* included in the minimum descriptor size (reason for the -1)
*/
ExtraStructBytes = (Buffer[1] - 1) * sizeof (UINT32);
/* Add the size of the optional ResourceSource */
ExtraStructBytes += AcpiRsStreamOptionLength (
ResourceLength - ExtraStructBytes, MinimumAmlResourceLength);
break;
default:
break;
}
/*
* Update the required buffer size for the internal descriptor structs
*
* Important: Round the size up for the appropriate alignment. This
* is a requirement on IA64.
*/
BufferSize = AcpiGbl_ResourceStructSizes[ResourceIndex] +
ExtraStructBytes;
BufferSize = (UINT32) ACPI_ROUND_UP_TO_NATIVE_WORD (BufferSize);
*SizeNeeded += BufferSize;
ACPI_DEBUG_PRINT ((ACPI_DB_RESOURCES,
"Type %.2X, AmlLength %.2X InternalLength %.2X\n",
AcpiUtGetResourceType (AmlBuffer),
AcpiUtGetDescriptorLength (AmlBuffer), BufferSize));
/*
* Point to the next resource within the AML stream using the length
* contained in the resource descriptor header
*/
AmlBuffer += AcpiUtGetDescriptorLength (AmlBuffer);
}
/* Did not find an EndTag resource descriptor */
return_ACPI_STATUS (AE_AML_NO_RESOURCE_END_TAG);
}
ACPI_STATUS
AcpiRsGetListLength (
UINT8 *AmlBuffer,
UINT32 AmlBufferLength,
ACPI_SIZE *SizeNeeded)
{
ACPI_STATUS Status;
UINT8 *EndAml;
UINT8 *Buffer;
UINT32 BufferSize;
UINT16 Temp16;
UINT16 ResourceLength;
UINT32 ExtraStructBytes;
UINT8 ResourceIndex;
UINT8 MinimumAmlResourceLength;
AML_RESOURCE *AmlResource;
ACPI_FUNCTION_TRACE (RsGetListLength);
*SizeNeeded = ACPI_RS_SIZE_MIN; /* Minimum size is one EndTag */
EndAml = AmlBuffer + AmlBufferLength;
/* Walk the list of AML resource descriptors */
while (AmlBuffer < EndAml)
{
/* Validate the Resource Type and Resource Length */
Status = AcpiUtValidateResource (NULL, AmlBuffer, &ResourceIndex);
if (ACPI_FAILURE (Status))
{
/*
* Exit on failure. Cannot continue because the descriptor length
* may be bogus also.
*/
return_ACPI_STATUS (Status);
}
AmlResource = (void *) AmlBuffer;
/* Get the resource length and base (minimum) AML size */
ResourceLength = AcpiUtGetResourceLength (AmlBuffer);
MinimumAmlResourceLength = AcpiGbl_ResourceAmlSizes[ResourceIndex];
/*
* Augment the size for descriptors with optional
* and/or variable length fields
*/
ExtraStructBytes = 0;
Buffer = AmlBuffer + AcpiUtGetResourceHeaderLength (AmlBuffer);
switch (AcpiUtGetResourceType (AmlBuffer))
{
case ACPI_RESOURCE_NAME_IRQ:
/*
* IRQ Resource:
* Get the number of bits set in the 16-bit IRQ mask
*/
ACPI_MOVE_16_TO_16 (&Temp16, Buffer);
ExtraStructBytes = AcpiRsCountSetBits (Temp16);
break;
case ACPI_RESOURCE_NAME_DMA:
/*
* DMA Resource:
* Get the number of bits set in the 8-bit DMA mask
*/
ExtraStructBytes = AcpiRsCountSetBits (*Buffer);
break;
case ACPI_RESOURCE_NAME_VENDOR_SMALL:
case ACPI_RESOURCE_NAME_VENDOR_LARGE:
/*
* Vendor Resource:
* Get the number of vendor data bytes
*/
ExtraStructBytes = ResourceLength;
/*
* There is already one byte included in the minimum
* descriptor size. If there are extra struct bytes,
* subtract one from the count.
*/
if (ExtraStructBytes)
{
ExtraStructBytes--;
}
break;
case ACPI_RESOURCE_NAME_END_TAG:
/*
* End Tag: This is the normal exit
*/
return_ACPI_STATUS (AE_OK);
case ACPI_RESOURCE_NAME_ADDRESS32:
case ACPI_RESOURCE_NAME_ADDRESS16:
case ACPI_RESOURCE_NAME_ADDRESS64:
/*
* Address Resource:
* Add the size of the optional ResourceSource
*/
ExtraStructBytes = AcpiRsStreamOptionLength (
ResourceLength, MinimumAmlResourceLength);
break;
case ACPI_RESOURCE_NAME_EXTENDED_IRQ:
/*
* Extended IRQ Resource:
* Using the InterruptTableLength, add 4 bytes for each additional
* interrupt. Note: at least one interrupt is required and is
* included in the minimum descriptor size (reason for the -1)
*/
ExtraStructBytes = (Buffer[1] - 1) * sizeof (UINT32);
/* Add the size of the optional ResourceSource */
ExtraStructBytes += AcpiRsStreamOptionLength (
ResourceLength - ExtraStructBytes, MinimumAmlResourceLength);
break;
case ACPI_RESOURCE_NAME_GPIO:
/* Vendor data is optional */
if (AmlResource->Gpio.VendorLength)
{
ExtraStructBytes += AmlResource->Gpio.VendorOffset -
AmlResource->Gpio.PinTableOffset + AmlResource->Gpio.VendorLength;
}
else
{
ExtraStructBytes += AmlResource->LargeHeader.ResourceLength +
sizeof (AML_RESOURCE_LARGE_HEADER) -
AmlResource->Gpio.PinTableOffset;
}
break;
case ACPI_RESOURCE_NAME_SERIAL_BUS:
MinimumAmlResourceLength = AcpiGbl_ResourceAmlSerialBusSizes[
AmlResource->CommonSerialBus.Type];
ExtraStructBytes += AmlResource->CommonSerialBus.ResourceLength -
MinimumAmlResourceLength;
break;
default:
break;
}
/*
* Update the required buffer size for the internal descriptor structs
*
* Important: Round the size up for the appropriate alignment. This
* is a requirement on IA64.
*/
if (AcpiUtGetResourceType (AmlBuffer) == ACPI_RESOURCE_NAME_SERIAL_BUS)
{
BufferSize = AcpiGbl_ResourceStructSerialBusSizes[
AmlResource->CommonSerialBus.Type] + ExtraStructBytes;
}
else
{
BufferSize = AcpiGbl_ResourceStructSizes[ResourceIndex] +
ExtraStructBytes;
}
BufferSize = (UINT32) ACPI_ROUND_UP_TO_NATIVE_WORD (BufferSize);
*SizeNeeded += BufferSize;
ACPI_DEBUG_PRINT ((ACPI_DB_RESOURCES,
"Type %.2X, AmlLength %.2X InternalLength %.2X\n",
AcpiUtGetResourceType (AmlBuffer),
AcpiUtGetDescriptorLength (AmlBuffer), BufferSize));
/*
* Point to the next resource within the AML stream using the length
* contained in the resource descriptor header
*/
AmlBuffer += AcpiUtGetDescriptorLength (AmlBuffer);
}
/* Did not find an EndTag resource descriptor */
return_ACPI_STATUS (AE_AML_NO_RESOURCE_END_TAG);
}
acpi_status
acpi_rs_get_list_length (
u8 *byte_stream_buffer,
u32 byte_stream_buffer_length,
acpi_size *size_needed)
{
u32 buffer_size = 0;
u32 bytes_parsed = 0;
u8 number_of_interrupts = 0;
u8 number_of_channels = 0;
u8 resource_type;
u32 structure_size;
u32 bytes_consumed;
u8 *buffer;
u8 temp8;
u16 temp16;
u8 index;
u8 additional_bytes;
ACPI_FUNCTION_TRACE ("rs_get_list_length");
while (bytes_parsed < byte_stream_buffer_length) {
/* The next byte in the stream is the resource type */
resource_type = acpi_rs_get_resource_type (*byte_stream_buffer);
switch (resource_type) {
case ACPI_RDESC_TYPE_MEMORY_24:
/*
* 24-Bit Memory Resource
*/
bytes_consumed = 12;
structure_size = ACPI_SIZEOF_RESOURCE (struct acpi_resource_mem24);
break;
case ACPI_RDESC_TYPE_LARGE_VENDOR:
/*
* Vendor Defined Resource
*/
buffer = byte_stream_buffer;
++buffer;
ACPI_MOVE_16_TO_16 (&temp16, buffer);
bytes_consumed = temp16 + 3;
/* Ensure a 32-bit boundary for the structure */
temp16 = (u16) ACPI_ROUND_UP_to_32_bITS (temp16);
structure_size = ACPI_SIZEOF_RESOURCE (struct acpi_resource_vendor) +
(temp16 * sizeof (u8));
break;
case ACPI_RDESC_TYPE_MEMORY_32:
/*
* 32-Bit Memory Range Resource
*/
bytes_consumed = 20;
structure_size = ACPI_SIZEOF_RESOURCE (struct acpi_resource_mem32);
break;
case ACPI_RDESC_TYPE_FIXED_MEMORY_32:
/*
* 32-Bit Fixed Memory Resource
*/
bytes_consumed = 12;
structure_size = ACPI_SIZEOF_RESOURCE (struct acpi_resource_fixed_mem32);
break;
case ACPI_RDESC_TYPE_EXTENDED_ADDRESS_SPACE:
/*
* 64-Bit Address Resource
*/
buffer = byte_stream_buffer;
++buffer;
ACPI_MOVE_16_TO_16 (&temp16, buffer);
bytes_consumed = temp16 + 3;
structure_size = ACPI_SIZEOF_RESOURCE (struct acpi_resource_address64);
break;
case ACPI_RDESC_TYPE_QWORD_ADDRESS_SPACE:
/*
* 64-Bit Address Resource
*/
buffer = byte_stream_buffer;
++buffer;
ACPI_MOVE_16_TO_16 (&temp16, buffer);
bytes_consumed = temp16 + 3;
/*
* Resource Source Index and Resource Source are optional elements.
* Check the length of the Bytestream. If it is greater than 43,
* that means that an Index exists and is followed by a null
* terminated string. Therefore, set the temp variable to the
* length minus the minimum byte stream length plus the byte for
* the Index to determine the size of the NULL terminated string.
*/
if (43 < temp16) {
temp8 = (u8) (temp16 - 44);
}
else {
temp8 = 0;
}
/* Ensure a 64-bit boundary for the structure */
temp8 = (u8) ACPI_ROUND_UP_to_64_bITS (temp8);
structure_size = ACPI_SIZEOF_RESOURCE (struct acpi_resource_address64) +
(temp8 * sizeof (u8));
break;
case ACPI_RDESC_TYPE_DWORD_ADDRESS_SPACE:
/*
* 32-Bit Address Resource
*/
buffer = byte_stream_buffer;
++buffer;
ACPI_MOVE_16_TO_16 (&temp16, buffer);
bytes_consumed = temp16 + 3;
/*
* Resource Source Index and Resource Source are optional elements.
* Check the length of the Bytestream. If it is greater than 23,
* that means that an Index exists and is followed by a null
* terminated string. Therefore, set the temp variable to the
* length minus the minimum byte stream length plus the byte for
* the Index to determine the size of the NULL terminated string.
*/
if (23 < temp16) {
temp8 = (u8) (temp16 - 24);
}
else {
temp8 = 0;
}
/* Ensure a 32-bit boundary for the structure */
temp8 = (u8) ACPI_ROUND_UP_to_32_bITS (temp8);
structure_size = ACPI_SIZEOF_RESOURCE (struct acpi_resource_address32) +
(temp8 * sizeof (u8));
break;
case ACPI_RDESC_TYPE_WORD_ADDRESS_SPACE:
/*
* 16-Bit Address Resource
*/
buffer = byte_stream_buffer;
++buffer;
ACPI_MOVE_16_TO_16 (&temp16, buffer);
bytes_consumed = temp16 + 3;
/*
* Resource Source Index and Resource Source are optional elements.
* Check the length of the Bytestream. If it is greater than 13,
* that means that an Index exists and is followed by a null
* terminated string. Therefore, set the temp variable to the
* length minus the minimum byte stream length plus the byte for
* the Index to determine the size of the NULL terminated string.
*/
if (13 < temp16) {
temp8 = (u8) (temp16 - 14);
}
else {
temp8 = 0;
}
/* Ensure a 32-bit boundary for the structure */
temp8 = (u8) ACPI_ROUND_UP_to_32_bITS (temp8);
structure_size = ACPI_SIZEOF_RESOURCE (struct acpi_resource_address16) +
(temp8 * sizeof (u8));
break;
case ACPI_RDESC_TYPE_EXTENDED_XRUPT:
/*
* Extended IRQ
*/
buffer = byte_stream_buffer;
++buffer;
ACPI_MOVE_16_TO_16 (&temp16, buffer);
bytes_consumed = temp16 + 3;
/*
* Point past the length field and the Interrupt vector flags to
* save off the Interrupt table length to the Temp8 variable.
*/
buffer += 3;
temp8 = *buffer;
/*
* To compensate for multiple interrupt numbers, add 4 bytes for
* each additional interrupts greater than 1
*/
additional_bytes = (u8) ((temp8 - 1) * 4);
/*
* Resource Source Index and Resource Source are optional elements.
* Check the length of the Bytestream. If it is greater than 9,
* that means that an Index exists and is followed by a null
* terminated string. Therefore, set the temp variable to the
* length minus the minimum byte stream length plus the byte for
* the Index to determine the size of the NULL terminated string.
*/
if (9 + additional_bytes < temp16) {
temp8 = (u8) (temp16 - (9 + additional_bytes));
}
else {
temp8 = 0;
}
/* Ensure a 32-bit boundary for the structure */
temp8 = (u8) ACPI_ROUND_UP_to_32_bITS (temp8);
structure_size = ACPI_SIZEOF_RESOURCE (struct acpi_resource_ext_irq) +
(additional_bytes * sizeof (u8)) +
(temp8 * sizeof (u8));
break;
case ACPI_RDESC_TYPE_IRQ_FORMAT:
/*
* IRQ Resource.
* Determine if it there are two or three trailing bytes
*/
buffer = byte_stream_buffer;
temp8 = *buffer;
if(temp8 & 0x01) {
bytes_consumed = 4;
}
else {
bytes_consumed = 3;
}
/* Point past the descriptor */
++buffer;
/* Look at the number of bits set */
ACPI_MOVE_16_TO_16 (&temp16, buffer);
for (index = 0; index < 16; index++) {
if (temp16 & 0x1) {
++number_of_interrupts;
}
temp16 >>= 1;
}
structure_size = ACPI_SIZEOF_RESOURCE (struct acpi_resource_io) +
(number_of_interrupts * sizeof (u32));
break;
case ACPI_RDESC_TYPE_DMA_FORMAT:
/*
* DMA Resource
*/
buffer = byte_stream_buffer;
bytes_consumed = 3;
/* Point past the descriptor */
++buffer;
/* Look at the number of bits set */
temp8 = *buffer;
for(index = 0; index < 8; index++) {
if(temp8 & 0x1) {
++number_of_channels;
}
temp8 >>= 1;
}
structure_size = ACPI_SIZEOF_RESOURCE (struct acpi_resource_dma) +
(number_of_channels * sizeof (u32));
break;
case ACPI_RDESC_TYPE_START_DEPENDENT:
/*
* Start Dependent Functions Resource
* Determine if it there are two or three trailing bytes
*/
buffer = byte_stream_buffer;
temp8 = *buffer;
if(temp8 & 0x01) {
bytes_consumed = 2;
}
else {
bytes_consumed = 1;
}
structure_size = ACPI_SIZEOF_RESOURCE (struct acpi_resource_start_dpf);
break;
case ACPI_RDESC_TYPE_END_DEPENDENT:
/*
* End Dependent Functions Resource
*/
bytes_consumed = 1;
structure_size = ACPI_RESOURCE_LENGTH;
break;
case ACPI_RDESC_TYPE_IO_PORT:
/*
* IO Port Resource
*/
bytes_consumed = 8;
structure_size = ACPI_SIZEOF_RESOURCE (struct acpi_resource_io);
break;
case ACPI_RDESC_TYPE_FIXED_IO_PORT:
/*
* Fixed IO Port Resource
*/
bytes_consumed = 4;
structure_size = ACPI_SIZEOF_RESOURCE (struct acpi_resource_fixed_io);
break;
case ACPI_RDESC_TYPE_SMALL_VENDOR:
/*
* Vendor Specific Resource
*/
buffer = byte_stream_buffer;
temp8 = *buffer;
temp8 = (u8) (temp8 & 0x7);
bytes_consumed = temp8 + 1;
/* Ensure a 32-bit boundary for the structure */
temp8 = (u8) ACPI_ROUND_UP_to_32_bITS (temp8);
structure_size = ACPI_SIZEOF_RESOURCE (struct acpi_resource_vendor) +
(temp8 * sizeof (u8));
break;
case ACPI_RDESC_TYPE_END_TAG:
/*
* End Tag
*/
bytes_consumed = 2;
structure_size = ACPI_RESOURCE_LENGTH;
byte_stream_buffer_length = bytes_parsed;
break;
default:
/*
* If we get here, everything is out of sync,
* exit with an error
*/
return_ACPI_STATUS (AE_AML_INVALID_RESOURCE_TYPE);
}
/* Update the return value and counter */
buffer_size += (u32) ACPI_ALIGN_RESOURCE_SIZE (structure_size);
bytes_parsed += bytes_consumed;
/* Set the byte stream to point to the next resource */
byte_stream_buffer += bytes_consumed;
}
/* This is the data the caller needs */
*size_needed = buffer_size;
return_ACPI_STATUS (AE_OK);
}
acpi_status
acpi_rs_get_list_length(u8 * aml_buffer,
u32 aml_buffer_length, acpi_size * size_needed)
{
acpi_status status;
u8 *end_aml;
u8 *buffer;
u32 buffer_size;
u16 temp16;
u16 resource_length;
u32 extra_struct_bytes;
u8 resource_index;
u8 minimum_aml_resource_length;
ACPI_FUNCTION_TRACE(rs_get_list_length);
*size_needed = 0;
end_aml = aml_buffer + aml_buffer_length;
/* Walk the list of AML resource descriptors */
while (aml_buffer < end_aml) {
/* Validate the Resource Type and Resource Length */
status = acpi_ut_validate_resource(aml_buffer, &resource_index);
if (ACPI_FAILURE(status)) {
return_ACPI_STATUS(status);
}
/* Get the resource length and base (minimum) AML size */
resource_length = acpi_ut_get_resource_length(aml_buffer);
minimum_aml_resource_length =
acpi_gbl_resource_aml_sizes[resource_index];
/*
* Augment the size for descriptors with optional
* and/or variable length fields
*/
extra_struct_bytes = 0;
buffer =
aml_buffer + acpi_ut_get_resource_header_length(aml_buffer);
switch (acpi_ut_get_resource_type(aml_buffer)) {
case ACPI_RESOURCE_NAME_IRQ:
/*
* IRQ Resource:
* Get the number of bits set in the 16-bit IRQ mask
*/
ACPI_MOVE_16_TO_16(&temp16, buffer);
extra_struct_bytes = acpi_rs_count_set_bits(temp16);
break;
case ACPI_RESOURCE_NAME_DMA:
/*
* DMA Resource:
* Get the number of bits set in the 8-bit DMA mask
*/
extra_struct_bytes = acpi_rs_count_set_bits(*buffer);
break;
case ACPI_RESOURCE_NAME_VENDOR_SMALL:
case ACPI_RESOURCE_NAME_VENDOR_LARGE:
/*
* Vendor Resource:
* Get the number of vendor data bytes
*/
extra_struct_bytes = resource_length;
break;
case ACPI_RESOURCE_NAME_END_TAG:
/*
* End Tag:
* This is the normal exit, add size of end_tag
*/
*size_needed += ACPI_RS_SIZE_MIN;
return_ACPI_STATUS(AE_OK);
case ACPI_RESOURCE_NAME_ADDRESS32:
case ACPI_RESOURCE_NAME_ADDRESS16:
case ACPI_RESOURCE_NAME_ADDRESS64:
/*
* Address Resource:
* Add the size of the optional resource_source
*/
extra_struct_bytes =
acpi_rs_stream_option_length(resource_length,
minimum_aml_resource_length);
break;
case ACPI_RESOURCE_NAME_EXTENDED_IRQ:
/*
* Extended IRQ Resource:
* Using the interrupt_table_length, add 4 bytes for each additional
* interrupt. Note: at least one interrupt is required and is
* included in the minimum descriptor size (reason for the -1)
*/
extra_struct_bytes = (buffer[1] - 1) * sizeof(u32);
/* Add the size of the optional resource_source */
extra_struct_bytes +=
acpi_rs_stream_option_length(resource_length -
extra_struct_bytes,
minimum_aml_resource_length);
break;
default:
break;
}
/*
* Update the required buffer size for the internal descriptor structs
*
* Important: Round the size up for the appropriate alignment. This
* is a requirement on IA64.
*/
buffer_size = acpi_gbl_resource_struct_sizes[resource_index] +
extra_struct_bytes;
buffer_size = (u32) ACPI_ROUND_UP_TO_NATIVE_WORD(buffer_size);
*size_needed += buffer_size;
ACPI_DEBUG_PRINT((ACPI_DB_RESOURCES,
"Type %.2X, AmlLength %.2X InternalLength %.2X\n",
acpi_ut_get_resource_type(aml_buffer),
acpi_ut_get_descriptor_length(aml_buffer),
buffer_size));
/*
* Point to the next resource within the AML stream using the length
* contained in the resource descriptor header
*/
aml_buffer += acpi_ut_get_descriptor_length(aml_buffer);
}
/* Did not find an end_tag resource descriptor */
return_ACPI_STATUS(AE_AML_NO_RESOURCE_END_TAG);
}
acpi_status
acpi_rs_memory24_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_mem24);
ACPI_FUNCTION_TRACE ("rs_memory24_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_MEM24;
/*
* Check Byte 3 the Read/Write bit
*/
temp8 = *buffer;
buffer += 1;
output_struct->data.memory24.read_write_attribute = temp8 & 0x01;
/*
* Get min_base_address (Bytes 4-5)
*/
ACPI_MOVE_16_TO_16 (&temp16, buffer);
buffer += 2;
output_struct->data.memory24.min_base_address = temp16;
/*
* Get max_base_address (Bytes 6-7)
*/
ACPI_MOVE_16_TO_16 (&temp16, buffer);
buffer += 2;
output_struct->data.memory24.max_base_address = temp16;
/*
* Get Alignment (Bytes 8-9)
*/
ACPI_MOVE_16_TO_16 (&temp16, buffer);
buffer += 2;
output_struct->data.memory24.alignment = temp16;
/*
* Get range_length (Bytes 10-11)
*/
ACPI_MOVE_16_TO_16 (&temp16, buffer);
output_struct->data.memory24.range_length = temp16;
/*
* 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
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
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);
}
