/*******************************************************************************
*
- * FUNCTION: acpi_rs_io_resource
+ * FUNCTION: acpi_rs_get_io
*
- * PARAMETERS: byte_stream_buffer - Pointer to the resource input byte
- * stream
- * bytes_consumed - Pointer to where the number of bytes
- * consumed the byte_stream_buffer is
- * returned
- * output_buffer - Pointer to the return data buffer
- * structure_size - Pointer to where the number of bytes
- * in the return data struct is returned
+ * PARAMETERS: Aml - Pointer to the AML resource descriptor
+ * aml_resource_length - Length of the resource from the AML header
+ * Resource - Where the internal resource is returned
*
* RETURN: Status
*
- * DESCRIPTION: Take the resource byte stream and fill out the appropriate
- * structure pointed to by the output_buffer. Return the
- * number of bytes consumed from the byte stream.
+ * DESCRIPTION: Convert a raw AML resource descriptor to the corresponding
+ * internal resource descriptor, simplifying bitflags and handling
+ * alignment and endian issues if necessary.
*
******************************************************************************/
acpi_status
-acpi_rs_io_resource(u8 * byte_stream_buffer,
- acpi_size * bytes_consumed,
- u8 ** output_buffer, acpi_size * structure_size)
+acpi_rs_get_io(union aml_resource *aml,
+ u16 aml_resource_length, struct acpi_resource *resource)
{
- 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_io);
+ ACPI_FUNCTION_TRACE("rs_get_io");
- ACPI_FUNCTION_TRACE("rs_io_resource");
+ /* Get the Decode flag */
- /* The number of bytes consumed are Constant */
+ resource->data.io.io_decode = aml->io.information & 0x01;
- *bytes_consumed = 8;
+ /*
+ * Get the following contiguous fields from the AML descriptor:
+ * Minimum Base Address
+ * Maximum Base Address
+ * Address Alignment
+ * Length
+ */
+ ACPI_MOVE_16_TO_32(&resource->data.io.minimum, &aml->io.minimum);
+ ACPI_MOVE_16_TO_32(&resource->data.io.maximum, &aml->io.maximum);
+ resource->data.io.alignment = aml->io.alignment;
+ resource->data.io.address_length = aml->io.address_length;
- output_struct->id = ACPI_RSTYPE_IO;
+ /* Complete the resource header */
- /* Check Decode */
-
- buffer += 1;
- temp8 = *buffer;
-
- output_struct->data.io.io_decode = temp8 & 0x01;
-
- /* Check min_base Address */
-
- buffer += 1;
- ACPI_MOVE_16_TO_16(&temp16, buffer);
-
- output_struct->data.io.min_base_address = temp16;
-
- /* Check max_base Address */
-
- buffer += 2;
- ACPI_MOVE_16_TO_16(&temp16, buffer);
-
- output_struct->data.io.max_base_address = temp16;
-
- /* Check Base alignment */
-
- buffer += 2;
- temp8 = *buffer;
-
- output_struct->data.io.alignment = temp8;
-
- /* Check range_length */
-
- buffer += 1;
- temp8 = *buffer;
-
- output_struct->data.io.range_length = temp8;
-
- /* Set the Length parameter */
-
- output_struct->length = (u32) struct_size;
-
- /* Return the final size of the structure */
-
- *structure_size = struct_size;
+ resource->type = ACPI_RESOURCE_TYPE_IO;
+ resource->length = ACPI_SIZEOF_RESOURCE(struct acpi_resource_io);
return_ACPI_STATUS(AE_OK);
}
/*******************************************************************************
*
- * FUNCTION: acpi_rs_fixed_io_resource
+ * FUNCTION: acpi_rs_set_io
*
- * PARAMETERS: byte_stream_buffer - Pointer to the resource input byte
- * stream
- * bytes_consumed - Pointer to where the number of bytes
- * consumed the byte_stream_buffer is
- * returned
- * output_buffer - Pointer to the return data buffer
- * structure_size - Pointer to where the number of bytes
- * in the return data struct is returned
+ * PARAMETERS: Resource - Pointer to the resource descriptor
+ * Aml - Where the AML descriptor is returned
*
* RETURN: Status
*
- * DESCRIPTION: Take the resource byte stream and fill out the appropriate
- * structure pointed to by the output_buffer. Return the
- * number of bytes consumed from the byte stream.
+ * DESCRIPTION: Convert an internal resource descriptor to the corresponding
+ * external AML resource descriptor.
*
******************************************************************************/
acpi_status
-acpi_rs_fixed_io_resource(u8 * byte_stream_buffer,
- acpi_size * bytes_consumed,
- u8 ** output_buffer, acpi_size * structure_size)
+acpi_rs_set_io(struct acpi_resource *resource, union aml_resource *aml)
{
- 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_fixed_io);
-
- ACPI_FUNCTION_TRACE("rs_fixed_io_resource");
+ ACPI_FUNCTION_TRACE("rs_set_io");
- /* The number of bytes consumed are Constant */
+ /* I/O Information Byte */
- *bytes_consumed = 4;
+ aml->io.information = (u8) (resource->data.io.io_decode & 0x01);
- output_struct->id = ACPI_RSTYPE_FIXED_IO;
+ /*
+ * Set the following contiguous fields in the AML descriptor:
+ * Minimum Base Address
+ * Maximum Base Address
+ * Address Alignment
+ * Length
+ */
+ ACPI_MOVE_32_TO_16(&aml->io.minimum, &resource->data.io.minimum);
+ ACPI_MOVE_32_TO_16(&aml->io.maximum, &resource->data.io.maximum);
+ aml->io.alignment = (u8) resource->data.io.alignment;
+ aml->io.address_length = (u8) resource->data.io.address_length;
- /* Check Range Base Address */
+ /* Complete the AML descriptor header */
- buffer += 1;
- ACPI_MOVE_16_TO_16(&temp16, buffer);
-
- output_struct->data.fixed_io.base_address = temp16;
-
- /* Check range_length */
-
- buffer += 2;
- temp8 = *buffer;
-
- output_struct->data.fixed_io.range_length = temp8;
-
- /* Set the Length parameter */
-
- output_struct->length = (u32) struct_size;
-
- /* Return the final size of the structure */
-
- *structure_size = struct_size;
+ acpi_rs_set_resource_header(ACPI_RESOURCE_NAME_IO,
+ sizeof(struct aml_resource_io), aml);
return_ACPI_STATUS(AE_OK);
}
/*******************************************************************************
*
- * FUNCTION: acpi_rs_io_stream
+ * FUNCTION: acpi_rs_get_fixed_io
*
- * PARAMETERS: linked_list - Pointer to the resource linked list
- * output_buffer - Pointer to the user's return buffer
- * bytes_consumed - Pointer to where the number of bytes
- * used in the output_buffer is returned
+ * PARAMETERS: Aml - Pointer to the AML resource descriptor
+ * aml_resource_length - Length of the resource from the AML header
+ * Resource - Where the internal resource is returned
*
* RETURN: Status
*
- * DESCRIPTION: Take the linked list resource structure and fills in the
- * the appropriate bytes in a byte stream
+ * DESCRIPTION: Convert a raw AML resource descriptor to the corresponding
+ * internal resource descriptor, simplifying bitflags and handling
+ * alignment and endian issues if necessary.
*
******************************************************************************/
acpi_status
-acpi_rs_io_stream(struct acpi_resource *linked_list,
- u8 ** output_buffer, acpi_size * bytes_consumed)
+acpi_rs_get_fixed_io(union aml_resource *aml,
+ u16 aml_resource_length, struct acpi_resource *resource)
{
- u8 *buffer = *output_buffer;
- u16 temp16 = 0;
- u8 temp8 = 0;
-
- ACPI_FUNCTION_TRACE("rs_io_stream");
-
- /* The descriptor field is static */
-
- *buffer = 0x47;
- buffer += 1;
-
- /* Io Information Byte */
-
- temp8 = (u8) (linked_list->data.io.io_decode & 0x01);
-
- *buffer = temp8;
- buffer += 1;
-
- /* Set the Range minimum base address */
-
- temp16 = (u16) linked_list->data.io.min_base_address;
-
- ACPI_MOVE_16_TO_16(buffer, &temp16);
- buffer += 2;
-
- /* Set the Range maximum base address */
-
- temp16 = (u16) linked_list->data.io.max_base_address;
+ ACPI_FUNCTION_TRACE("rs_get_fixed_io");
- ACPI_MOVE_16_TO_16(buffer, &temp16);
- buffer += 2;
+ /*
+ * Get the following contiguous fields from the AML descriptor:
+ * Base Address
+ * Length
+ */
+ ACPI_MOVE_16_TO_32(&resource->data.fixed_io.address,
+ &aml->fixed_io.address);
+ resource->data.fixed_io.address_length = aml->fixed_io.address_length;
- /* Set the base alignment */
+ /* Complete the resource header */
- temp8 = (u8) linked_list->data.io.alignment;
-
- *buffer = temp8;
- buffer += 1;
-
- /* Set the range length */
-
- temp8 = (u8) linked_list->data.io.range_length;
-
- *buffer = temp8;
- buffer += 1;
-
- /* Return the number of bytes consumed in this operation */
-
- *bytes_consumed = ACPI_PTR_DIFF(buffer, *output_buffer);
+ resource->type = ACPI_RESOURCE_TYPE_FIXED_IO;
+ resource->length = ACPI_SIZEOF_RESOURCE(struct acpi_resource_fixed_io);
return_ACPI_STATUS(AE_OK);
}
/*******************************************************************************
*
- * FUNCTION: acpi_rs_fixed_io_stream
+ * FUNCTION: acpi_rs_set_fixed_io
*
- * PARAMETERS: linked_list - Pointer to the resource linked list
- * output_buffer - Pointer to the user's return buffer
- * bytes_consumed - Pointer to where the number of bytes
- * used in the output_buffer is returned
+ * PARAMETERS: Resource - Pointer to the resource descriptor
+ * Aml - Where the AML descriptor is returned
*
* RETURN: Status
*
- * DESCRIPTION: Take the linked list resource structure and fills in the
- * the appropriate bytes in a byte stream
+ * DESCRIPTION: Convert an internal resource descriptor to the corresponding
+ * external AML resource descriptor.
*
******************************************************************************/
acpi_status
-acpi_rs_fixed_io_stream(struct acpi_resource *linked_list,
- u8 ** output_buffer, acpi_size * bytes_consumed)
+acpi_rs_set_fixed_io(struct acpi_resource *resource, union aml_resource *aml)
{
- u8 *buffer = *output_buffer;
- u16 temp16 = 0;
- u8 temp8 = 0;
-
- ACPI_FUNCTION_TRACE("rs_fixed_io_stream");
-
- /* The descriptor field is static */
-
- *buffer = 0x4B;
-
- buffer += 1;
-
- /* Set the Range base address */
-
- temp16 = (u16) linked_list->data.fixed_io.base_address;
-
- ACPI_MOVE_16_TO_16(buffer, &temp16);
- buffer += 2;
-
- /* Set the range length */
-
- temp8 = (u8) linked_list->data.fixed_io.range_length;
-
- *buffer = temp8;
- buffer += 1;
-
- /* Return the number of bytes consumed in this operation */
-
- *bytes_consumed = ACPI_PTR_DIFF(buffer, *output_buffer);
+ ACPI_FUNCTION_TRACE("rs_set_fixed_io");
+
+ /*
+ * Set the following contiguous fields in the AML descriptor:
+ * Base Address
+ * Length
+ */
+ ACPI_MOVE_32_TO_16(&aml->fixed_io.address,
+ &resource->data.fixed_io.address);
+ aml->fixed_io.address_length =
+ (u8) resource->data.fixed_io.address_length;
+
+ /* Complete the AML descriptor header */
+
+ acpi_rs_set_resource_header(ACPI_RESOURCE_NAME_FIXED_IO,
+ sizeof(struct aml_resource_fixed_io), aml);
return_ACPI_STATUS(AE_OK);
}
/*******************************************************************************
*
- * FUNCTION: acpi_rs_dma_resource
+ * FUNCTION: acpi_rs_get_dma
*
- * PARAMETERS: byte_stream_buffer - Pointer to the resource input byte
- * stream
- * bytes_consumed - Pointer to where the number of bytes
- * consumed the byte_stream_buffer is
- * returned
- * output_buffer - Pointer to the return data buffer
- * structure_size - Pointer to where the number of bytes
- * in the return data struct is returned
+ * PARAMETERS: Aml - Pointer to the AML resource descriptor
+ * aml_resource_length - Length of the resource from the AML header
+ * Resource - Where the internal resource is returned
*
* RETURN: Status
*
- * DESCRIPTION: Take the resource byte stream and fill out the appropriate
- * structure pointed to by the output_buffer. Return the
- * number of bytes consumed from the byte stream.
+ * DESCRIPTION: Convert a raw AML resource descriptor to the corresponding
+ * internal resource descriptor, simplifying bitflags and handling
+ * alignment and endian issues if necessary.
*
******************************************************************************/
acpi_status
-acpi_rs_dma_resource(u8 * byte_stream_buffer,
- acpi_size * bytes_consumed,
- u8 ** output_buffer, acpi_size * structure_size)
+acpi_rs_get_dma(union aml_resource *aml,
+ u16 aml_resource_length, struct acpi_resource *resource)
{
- u8 *buffer = byte_stream_buffer;
- struct acpi_resource *output_struct = (void *)*output_buffer;
- u8 temp8 = 0;
- u8 index;
- u8 i;
- acpi_size struct_size = ACPI_SIZEOF_RESOURCE(struct acpi_resource_dma);
+ u32 channel_count = 0;
+ u32 i;
+ u8 temp8;
- ACPI_FUNCTION_TRACE("rs_dma_resource");
-
- /* The number of bytes consumed are Constant */
-
- *bytes_consumed = 3;
- output_struct->id = ACPI_RSTYPE_DMA;
-
- /* Point to the 8-bits of Byte 1 */
-
- buffer += 1;
- temp8 = *buffer;
+ ACPI_FUNCTION_TRACE("rs_get_dma");
/* Decode the DMA channel bits */
- for (i = 0, index = 0; index < 8; index++) {
- if ((temp8 >> index) & 0x01) {
- output_struct->data.dma.channels[i] = index;
- i++;
+ for (i = 0; i < 8; i++) {
+ if ((aml->dma.dma_channel_mask >> i) & 0x01) {
+ resource->data.dma.channels[channel_count] = i;
+ channel_count++;
}
}
- /* Zero DMA channels is valid */
-
- output_struct->data.dma.number_of_channels = i;
- if (i > 0) {
- /* Calculate the structure size based upon the number of interrupts */
+ resource->length = 0;
+ resource->data.dma.channel_count = channel_count;
- struct_size += ((acpi_size) i - 1) * 4;
+ /*
+ * Calculate the structure size based upon the number of channels
+ * Note: Zero DMA channels is valid
+ */
+ if (channel_count > 0) {
+ resource->length = (u32) (channel_count - 1) * 4;
}
- /* Point to Byte 2 */
+ /* Get the flags: transfer preference, bus mastering, channel speed */
- buffer += 1;
- temp8 = *buffer;
+ temp8 = aml->dma.flags;
+ resource->data.dma.transfer = temp8 & 0x03;
+ resource->data.dma.bus_master = (temp8 >> 2) & 0x01;
+ resource->data.dma.type = (temp8 >> 5) & 0x03;
- /* Check for transfer preference (Bits[1:0]) */
-
- output_struct->data.dma.transfer = temp8 & 0x03;
-
- if (0x03 == output_struct->data.dma.transfer) {
+ if (resource->data.dma.transfer == 0x03) {
ACPI_DEBUG_PRINT((ACPI_DB_ERROR,
"Invalid DMA.Transfer preference (3)\n"));
return_ACPI_STATUS(AE_BAD_DATA);
}
- /* Get bus master preference (Bit[2]) */
-
- output_struct->data.dma.bus_master = (temp8 >> 2) & 0x01;
-
- /* Get channel speed support (Bits[6:5]) */
+ /* Complete the resource header */
- output_struct->data.dma.type = (temp8 >> 5) & 0x03;
-
- /* Set the Length parameter */
-
- output_struct->length = (u32) struct_size;
-
- /* Return the final size of the structure */
-
- *structure_size = struct_size;
+ resource->type = ACPI_RESOURCE_TYPE_DMA;
+ resource->length += ACPI_SIZEOF_RESOURCE(struct acpi_resource_dma);
return_ACPI_STATUS(AE_OK);
}
/*******************************************************************************
*
- * FUNCTION: acpi_rs_dma_stream
+ * FUNCTION: acpi_rs_set_dma
*
- * PARAMETERS: linked_list - Pointer to the resource linked list
- * output_buffer - Pointer to the user's return buffer
- * bytes_consumed - Pointer to where the number of bytes
- * used in the output_buffer is returned
+ * PARAMETERS: Resource - Pointer to the resource descriptor
+ * Aml - Where the AML descriptor is returned
*
* RETURN: Status
*
- * DESCRIPTION: Take the linked list resource structure and fills in the
- * the appropriate bytes in a byte stream
+ * DESCRIPTION: Convert an internal resource descriptor to the corresponding
+ * external AML resource descriptor.
*
******************************************************************************/
acpi_status
-acpi_rs_dma_stream(struct acpi_resource *linked_list,
- u8 ** output_buffer, acpi_size * bytes_consumed)
+acpi_rs_set_dma(struct acpi_resource *resource, union aml_resource *aml)
{
- u8 *buffer = *output_buffer;
- u16 temp16 = 0;
- u8 temp8 = 0;
- u8 index;
-
- ACPI_FUNCTION_TRACE("rs_dma_stream");
-
- /* The descriptor field is static */
+ u8 i;
- *buffer = 0x2A;
- buffer += 1;
- temp8 = 0;
+ ACPI_FUNCTION_TRACE("rs_set_dma");
- /* Loop through all of the Channels and set the mask bits */
+ /* Convert channel list to 8-bit DMA channel bitmask */
- for (index = 0;
- index < linked_list->data.dma.number_of_channels; index++) {
- temp16 = (u16) linked_list->data.dma.channels[index];
- temp8 |= 0x1 << temp16;
+ aml->dma.dma_channel_mask = 0;
+ for (i = 0; i < resource->data.dma.channel_count; i++) {
+ aml->dma.dma_channel_mask |=
+ (1 << resource->data.dma.channels[i]);
}
- *buffer = temp8;
- buffer += 1;
-
- /* Set the DMA Info */
-
- temp8 = (u8) ((linked_list->data.dma.type & 0x03) << 5);
- temp8 |= ((linked_list->data.dma.bus_master & 0x01) << 2);
- temp8 |= (linked_list->data.dma.transfer & 0x03);
+ /* Set the DMA Flag bits */
- *buffer = temp8;
- buffer += 1;
+ aml->dma.flags = (u8)
+ (((resource->data.dma.type & 0x03) << 5) |
+ ((resource->data.dma.bus_master & 0x01) << 2) |
+ (resource->data.dma.transfer & 0x03));
- /* Return the number of bytes consumed in this operation */
+ /* Complete the AML descriptor header */
- *bytes_consumed = ACPI_PTR_DIFF(buffer, *output_buffer);
+ acpi_rs_set_resource_header(ACPI_RESOURCE_NAME_DMA,
+ sizeof(struct aml_resource_dma), aml);
return_ACPI_STATUS(AE_OK);
}
projects / linux-2.6-omap-h63xx.git / blobdiff