#define _COMPONENT ACPI_RESOURCES
ACPI_MODULE_NAME("rslist")
-/* Dispatch table for convert-to-stream functions */
-typedef
-acpi_status(*ACPI_STREAM_HANDLER) (struct acpi_resource * resource,
- u8 ** output_buffer,
- acpi_size * bytes_consumed);
-
-static ACPI_STREAM_HANDLER acpi_gbl_stream_dispatch[] = {
- acpi_rs_irq_stream, /* ACPI_RSTYPE_IRQ */
- acpi_rs_dma_stream, /* ACPI_RSTYPE_DMA */
- acpi_rs_start_depend_fns_stream, /* ACPI_RSTYPE_START_DPF */
- acpi_rs_end_depend_fns_stream, /* ACPI_RSTYPE_END_DPF */
- acpi_rs_io_stream, /* ACPI_RSTYPE_IO */
- acpi_rs_fixed_io_stream, /* ACPI_RSTYPE_FIXED_IO */
- acpi_rs_vendor_stream, /* ACPI_RSTYPE_VENDOR */
- acpi_rs_end_tag_stream, /* ACPI_RSTYPE_END_TAG */
- acpi_rs_memory24_stream, /* ACPI_RSTYPE_MEM24 */
- acpi_rs_memory32_range_stream, /* ACPI_RSTYPE_MEM32 */
- acpi_rs_fixed_memory32_stream, /* ACPI_RSTYPE_FIXED_MEM32 */
- acpi_rs_address16_stream, /* ACPI_RSTYPE_ADDRESS16 */
- acpi_rs_address32_stream, /* ACPI_RSTYPE_ADDRESS32 */
- acpi_rs_address64_stream, /* ACPI_RSTYPE_ADDRESS64 */
- acpi_rs_extended_irq_stream, /* ACPI_RSTYPE_EXT_IRQ */
- acpi_rs_generic_register_stream /* ACPI_RSTYPE_GENERIC_REG */
-};
-
-/* Dispatch tables for convert-to-resource functions */
-
-typedef
-acpi_status(*ACPI_RESOURCE_HANDLER) (u8 * byte_stream_buffer,
- acpi_size * bytes_consumed,
- u8 ** output_buffer,
- acpi_size * structure_size);
-
-static ACPI_RESOURCE_HANDLER acpi_gbl_sm_resource_dispatch[] = {
- NULL, /* 0x00, Reserved */
- NULL, /* 0x01, Reserved */
- NULL, /* 0x02, Reserved */
- NULL, /* 0x03, Reserved */
- acpi_rs_irq_resource, /* ACPI_RDESC_TYPE_IRQ_FORMAT */
- acpi_rs_dma_resource, /* ACPI_RDESC_TYPE_DMA_FORMAT */
- acpi_rs_start_depend_fns_resource, /* ACPI_RDESC_TYPE_START_DEPENDENT */
- acpi_rs_end_depend_fns_resource, /* ACPI_RDESC_TYPE_END_DEPENDENT */
- acpi_rs_io_resource, /* ACPI_RDESC_TYPE_IO_PORT */
- acpi_rs_fixed_io_resource, /* ACPI_RDESC_TYPE_FIXED_IO_PORT */
- NULL, /* 0x0A, Reserved */
- NULL, /* 0x0B, Reserved */
- NULL, /* 0x0C, Reserved */
- NULL, /* 0x0D, Reserved */
- acpi_rs_vendor_resource, /* ACPI_RDESC_TYPE_SMALL_VENDOR */
- acpi_rs_end_tag_resource /* ACPI_RDESC_TYPE_END_TAG */
-};
-
-static ACPI_RESOURCE_HANDLER acpi_gbl_lg_resource_dispatch[] = {
- NULL, /* 0x00, Reserved */
- acpi_rs_memory24_resource, /* ACPI_RDESC_TYPE_MEMORY_24 */
- acpi_rs_generic_register_resource, /* ACPI_RDESC_TYPE_GENERIC_REGISTER */
- NULL, /* 0x03, Reserved */
- acpi_rs_vendor_resource, /* ACPI_RDESC_TYPE_LARGE_VENDOR */
- acpi_rs_memory32_range_resource, /* ACPI_RDESC_TYPE_MEMORY_32 */
- acpi_rs_fixed_memory32_resource, /* ACPI_RDESC_TYPE_FIXED_MEMORY_32 */
- acpi_rs_address32_resource, /* ACPI_RDESC_TYPE_DWORD_ADDRESS_SPACE */
- acpi_rs_address16_resource, /* ACPI_RDESC_TYPE_WORD_ADDRESS_SPACE */
- acpi_rs_extended_irq_resource, /* ACPI_RDESC_TYPE_EXTENDED_XRUPT */
- acpi_rs_address64_resource, /* ACPI_RDESC_TYPE_QWORD_ADDRESS_SPACE */
- acpi_rs_address64_resource /* ACPI_RDESC_TYPE_EXTENDED_ADDRESS_SPACE */
-};
-
-/* Local prototypes */
-
-static ACPI_RESOURCE_HANDLER acpi_rs_get_resource_handler(u8 resource_type);
-
-/*******************************************************************************
- *
- * FUNCTION: acpi_rs_get_resource_type
- *
- * PARAMETERS: resource_type - Byte 0 of a resource descriptor
- *
- * RETURN: The Resource Type with no extraneous bits (except the large/
- * small bit -- left alone)
- *
- * DESCRIPTION: Extract the Resource Type/Name from the first byte of
- * a resource descriptor.
- *
- ******************************************************************************/
-
-u8 acpi_rs_get_resource_type(u8 resource_type)
-{
- ACPI_FUNCTION_ENTRY();
-
- /* Determine if this is a small or large resource */
-
- if (resource_type & ACPI_RDESC_TYPE_LARGE) {
- /* Large Resource Type -- bits 6:0 contain the name */
-
- return (resource_type);
- } else {
- /* Small Resource Type -- bits 6:3 contain the name */
-
- return ((u8) (resource_type & ACPI_RDESC_SMALL_MASK));
- }
-}
-
/*******************************************************************************
*
- * FUNCTION: acpi_rs_get_resource_handler
- *
- * PARAMETERS: resource_type - Byte 0 of a resource descriptor
+ * FUNCTION: acpi_rs_convert_aml_to_resources
*
- * RETURN: Pointer to the resource conversion handler
- *
- * DESCRIPTION: Extract the Resource Type/Name from the first byte of
- * a resource descriptor.
- *
- ******************************************************************************/
-
-static ACPI_RESOURCE_HANDLER acpi_rs_get_resource_handler(u8 resource_type)
-{
- ACPI_FUNCTION_ENTRY();
-
- /* Determine if this is a small or large resource */
-
- if (resource_type & ACPI_RDESC_TYPE_LARGE) {
- /* Large Resource Type -- bits 6:0 contain the name */
-
- if (resource_type > ACPI_RDESC_LARGE_MAX) {
- return (NULL);
- }
-
- return (acpi_gbl_lg_resource_dispatch[(resource_type &
- ACPI_RDESC_LARGE_MASK)]);
- } else {
- /* Small Resource Type -- bits 6:3 contain the name */
-
- return (acpi_gbl_sm_resource_dispatch[((resource_type &
- ACPI_RDESC_SMALL_MASK)
- >> 3)]);
- }
-}
-
-/*******************************************************************************
- *
- * FUNCTION: acpi_rs_byte_stream_to_list
- *
- * PARAMETERS: byte_stream_buffer - Pointer to the resource byte stream
- * byte_stream_buffer_length - Length of byte_stream_buffer
- * output_buffer - Pointer to the buffer that will
- * contain the output structures
+ * PARAMETERS: Aml - Pointer to the resource byte stream
+ * aml_length - Length of Aml
+ * output_buffer - Pointer to the buffer that will
+ * contain the output structures
*
* RETURN: Status
*
* linked list of resources in the caller's output buffer
*
******************************************************************************/
-
acpi_status
-acpi_rs_byte_stream_to_list(u8 * byte_stream_buffer,
- u32 byte_stream_buffer_length, u8 * output_buffer)
+acpi_rs_convert_aml_to_resources(u8 * aml, u32 aml_length, u8 * output_buffer)
{
- u8 *buffer = output_buffer;
+ struct acpi_resource *resource = (void *)output_buffer;
acpi_status status;
- acpi_size bytes_parsed = 0;
- acpi_size bytes_consumed = 0;
- acpi_size structure_size = 0;
- struct acpi_resource *resource;
- ACPI_RESOURCE_HANDLER handler;
-
- ACPI_FUNCTION_TRACE("rs_byte_stream_to_list");
-
- /* Loop until end-of-buffer or an end_tag is found */
+ u8 resource_index;
+ u8 *end_aml;
- while (bytes_parsed < byte_stream_buffer_length) {
- /* Get the handler associated with this Descriptor Type */
+ ACPI_FUNCTION_TRACE("rs_convert_aml_to_resources");
- handler = acpi_rs_get_resource_handler(*byte_stream_buffer);
- if (handler) {
- /* Convert a byte stream resource to local resource struct */
+ end_aml = aml + aml_length;
- status = handler(byte_stream_buffer, &bytes_consumed,
- &buffer, &structure_size);
- } else {
- /* Invalid resource type */
+ /* Loop until end-of-buffer or an end_tag is found */
- status = AE_AML_INVALID_RESOURCE_TYPE;
- }
+ while (aml < end_aml) {
+ /* Validate the Resource Type and Resource Length */
+ status = acpi_ut_validate_resource(aml, &resource_index);
if (ACPI_FAILURE(status)) {
return_ACPI_STATUS(status);
}
- /* Set the aligned length of the new resource descriptor */
+ /* Convert the AML byte stream resource to a local resource struct */
- resource = ACPI_CAST_PTR(struct acpi_resource, buffer);
- resource->length =
- (u32) ACPI_ALIGN_RESOURCE_SIZE(resource->length);
+ status =
+ acpi_rs_convert_aml_to_resource(resource,
+ ACPI_CAST_PTR(union
+ aml_resource,
+ aml),
+ acpi_gbl_get_resource_dispatch
+ [resource_index]);
+ if (ACPI_FAILURE(status)) {
+ ACPI_REPORT_ERROR(("Could not convert AML resource (Type %X) to resource, %s\n", *aml, acpi_format_exception(status)));
+ return_ACPI_STATUS(status);
+ }
/* Normal exit on completion of an end_tag resource descriptor */
- if (acpi_rs_get_resource_type(*byte_stream_buffer) ==
- ACPI_RDESC_TYPE_END_TAG) {
+ if (acpi_ut_get_resource_type(aml) ==
+ ACPI_RESOURCE_NAME_END_TAG) {
return_ACPI_STATUS(AE_OK);
}
- /* Update counter and point to the next input resource */
+ /* Point to the next input AML resource */
- bytes_parsed += bytes_consumed;
- byte_stream_buffer += bytes_consumed;
+ aml += acpi_ut_get_descriptor_length(aml);
/* Point to the next structure in the output buffer */
- buffer += ACPI_ALIGN_RESOURCE_SIZE(structure_size);
+ resource =
+ ACPI_ADD_PTR(struct acpi_resource, resource,
+ resource->length);
}
- /* Completed buffer, but did not find an end_tag resource descriptor */
+ /* Did not find an end_tag resource descriptor */
return_ACPI_STATUS(AE_AML_NO_RESOURCE_END_TAG);
}
/*******************************************************************************
*
- * FUNCTION: acpi_rs_list_to_byte_stream
+ * FUNCTION: acpi_rs_convert_resources_to_aml
*
- * PARAMETERS: Resource - Pointer to the resource linked list
- * byte_steam_size_needed - Calculated size of the byte stream
- * needed from calling
- * acpi_rs_get_byte_stream_length()
- * The size of the output_buffer is
- * guaranteed to be >=
- * byte_stream_size_needed
- * output_buffer - Pointer to the buffer that will
- * contain the byte stream
+ * PARAMETERS: Resource - Pointer to the resource linked list
+ * aml_size_needed - Calculated size of the byte stream
+ * needed from calling acpi_rs_get_aml_length()
+ * The size of the output_buffer is
+ * guaranteed to be >= aml_size_needed
+ * output_buffer - Pointer to the buffer that will
+ * contain the byte stream
*
* RETURN: Status
*
******************************************************************************/
acpi_status
-acpi_rs_list_to_byte_stream(struct acpi_resource *resource,
- acpi_size byte_stream_size_needed,
- u8 * output_buffer)
+acpi_rs_convert_resources_to_aml(struct acpi_resource *resource,
+ acpi_size aml_size_needed, u8 * output_buffer)
{
- u8 *buffer = output_buffer;
- acpi_size bytes_consumed = 0;
+ u8 *aml = output_buffer;
+ u8 *end_aml = output_buffer + aml_size_needed;
acpi_status status;
- ACPI_FUNCTION_TRACE("rs_list_to_byte_stream");
+ ACPI_FUNCTION_TRACE("rs_convert_resources_to_aml");
- /* Convert each resource descriptor in the list */
+ /* Walk the resource descriptor list, convert each descriptor */
- while (1) {
- /* Validate Type before dispatch */
+ while (aml < end_aml) {
+ /* Validate the (internal) Resource Type */
- if (resource->type > ACPI_RSTYPE_MAX) {
+ if (resource->type > ACPI_RESOURCE_TYPE_MAX) {
ACPI_DEBUG_PRINT((ACPI_DB_ERROR,
"Invalid descriptor type (%X) in resource list\n",
resource->type));
return_ACPI_STATUS(AE_BAD_DATA);
}
- /* Perform the conversion, per resource type */
+ /* Perform the conversion */
- status = acpi_gbl_stream_dispatch[resource->type] (resource,
- &buffer,
- &bytes_consumed);
+ status = acpi_rs_convert_resource_to_aml(resource,
+ ACPI_CAST_PTR(union
+ aml_resource,
+ aml),
+ acpi_gbl_set_resource_dispatch
+ [resource->type]);
if (ACPI_FAILURE(status)) {
+ ACPI_REPORT_ERROR(("Could not convert resource (type %X) to AML, %s\n", resource->type, acpi_format_exception(status)));
return_ACPI_STATUS(status);
}
- /* Check for end-of-list */
+ /* Perform final sanity check on the new AML resource descriptor */
+
+ status =
+ acpi_ut_validate_resource(ACPI_CAST_PTR
+ (union aml_resource, aml), NULL);
+ if (ACPI_FAILURE(status)) {
+ return_ACPI_STATUS(status);
+ }
- if (resource->type == ACPI_RSTYPE_END_TAG) {
- /* An End Tag indicates the end of the Resource Template */
+ /* Check for end-of-list, normal exit */
+
+ if (resource->type == ACPI_RESOURCE_TYPE_END_TAG) {
+ /* An End Tag indicates the end of the input Resource Template */
return_ACPI_STATUS(AE_OK);
}
- /* Set the Buffer to point to the next (output) resource descriptor */
-
- buffer += bytes_consumed;
+ /*
+ * Extract the total length of the new descriptor and set the
+ * Aml to point to the next (output) resource descriptor
+ */
+ aml += acpi_ut_get_descriptor_length(aml);
- /* Point to the next input resource object */
+ /* Point to the next input resource descriptor */
- resource = ACPI_PTR_ADD(struct acpi_resource,
- resource, resource->length);
+ resource =
+ ACPI_ADD_PTR(struct acpi_resource, resource,
+ resource->length);
}
+
+ /* Completed buffer, but did not find an end_tag resource descriptor */
+
+ return_ACPI_STATUS(AE_AML_NO_RESOURCE_END_TAG);
}
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