#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_start_byte - Byte 0 of a resource descriptor
+ * PARAMETERS: resource_type - Byte 0 of a resource descriptor
*
- * RETURN: The Resource Type with no extraneous bits
+ * 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_start_byte)
-{
+u8 acpi_rs_get_resource_type(u8 resource_type)
+{
ACPI_FUNCTION_ENTRY();
/* Determine if this is a small or large resource */
- switch (resource_start_byte & ACPI_RDESC_TYPE_MASK) {
- case ACPI_RDESC_TYPE_SMALL:
+ 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
+ *
+ * RETURN: Pointer to the resource conversion handler
+ *
+ * DESCRIPTION: Extract the Resource Type/Name from the first byte of
+ * a resource descriptor.
+ *
+ ******************************************************************************/
- /* Small Resource Type -- Only bits 6:3 are valid */
+static ACPI_RESOURCE_HANDLER acpi_rs_get_resource_handler(u8 resource_type)
+{
+ ACPI_FUNCTION_ENTRY();
- return ((u8) (resource_start_byte & ACPI_RDESC_SMALL_MASK));
+ /* Determine if this is a small or large resource */
- case ACPI_RDESC_TYPE_LARGE:
+ if (resource_type & ACPI_RDESC_TYPE_LARGE) {
+ /* Large Resource Type -- bits 6:0 contain the name */
- /* Large Resource Type -- All bits are valid */
+ if (resource_type > ACPI_RDESC_LARGE_MAX) {
+ return (NULL);
+ }
- return (resource_start_byte);
+ return (acpi_gbl_lg_resource_dispatch[(resource_type &
+ ACPI_RDESC_LARGE_MASK)]);
+ } else {
+ /* Small Resource Type -- bits 6:3 contain the name */
- default:
- /* Invalid type */
- break;
+ return (acpi_gbl_sm_resource_dispatch[((resource_type &
+ ACPI_RDESC_SMALL_MASK)
+ >> 3)]);
}
-
- return (0xFF);
}
/*******************************************************************************
acpi_rs_byte_stream_to_list(u8 * byte_stream_buffer,
u32 byte_stream_buffer_length, u8 * output_buffer)
{
+ u8 *buffer = output_buffer;
acpi_status status;
acpi_size bytes_parsed = 0;
- u8 resource_type = 0;
acpi_size bytes_consumed = 0;
- u8 *buffer = output_buffer;
acpi_size structure_size = 0;
- u8 end_tag_processed = FALSE;
struct acpi_resource *resource;
+ ACPI_RESOURCE_HANDLER handler;
ACPI_FUNCTION_TRACE("rs_byte_stream_to_list");
- while (bytes_parsed < byte_stream_buffer_length && !end_tag_processed) {
- /* 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
- */
- status = acpi_rs_memory24_resource(byte_stream_buffer,
- &bytes_consumed,
- &buffer,
- &structure_size);
- break;
-
- case ACPI_RDESC_TYPE_LARGE_VENDOR:
- /*
- * Vendor Defined Resource
- */
- status = acpi_rs_vendor_resource(byte_stream_buffer,
- &bytes_consumed,
- &buffer,
- &structure_size);
- break;
-
- case ACPI_RDESC_TYPE_MEMORY_32:
- /*
- * 32-Bit Memory Range Resource
- */
- status =
- acpi_rs_memory32_range_resource(byte_stream_buffer,
- &bytes_consumed,
- &buffer,
- &structure_size);
- break;
-
- case ACPI_RDESC_TYPE_FIXED_MEMORY_32:
- /*
- * 32-Bit Fixed Memory Resource
- */
- status =
- acpi_rs_fixed_memory32_resource(byte_stream_buffer,
- &bytes_consumed,
- &buffer,
- &structure_size);
- break;
-
- case ACPI_RDESC_TYPE_QWORD_ADDRESS_SPACE:
- case ACPI_RDESC_TYPE_EXTENDED_ADDRESS_SPACE:
- /*
- * 64-Bit Address Resource
- */
- status = acpi_rs_address64_resource(byte_stream_buffer,
- &bytes_consumed,
- &buffer,
- &structure_size);
- break;
-
- case ACPI_RDESC_TYPE_DWORD_ADDRESS_SPACE:
- /*
- * 32-Bit Address Resource
- */
- status = acpi_rs_address32_resource(byte_stream_buffer,
- &bytes_consumed,
- &buffer,
- &structure_size);
- break;
-
- case ACPI_RDESC_TYPE_WORD_ADDRESS_SPACE:
- /*
- * 16-Bit Address Resource
- */
- status = acpi_rs_address16_resource(byte_stream_buffer,
- &bytes_consumed,
- &buffer,
- &structure_size);
- break;
-
- case ACPI_RDESC_TYPE_EXTENDED_XRUPT:
- /*
- * Extended IRQ
- */
- status =
- acpi_rs_extended_irq_resource(byte_stream_buffer,
- &bytes_consumed,
- &buffer,
- &structure_size);
- break;
-
- case ACPI_RDESC_TYPE_IRQ_FORMAT:
- /*
- * IRQ Resource
- */
- status = acpi_rs_irq_resource(byte_stream_buffer,
- &bytes_consumed, &buffer,
- &structure_size);
- break;
-
- case ACPI_RDESC_TYPE_DMA_FORMAT:
- /*
- * DMA Resource
- */
- status = acpi_rs_dma_resource(byte_stream_buffer,
- &bytes_consumed, &buffer,
- &structure_size);
- break;
-
- case ACPI_RDESC_TYPE_START_DEPENDENT:
- /*
- * Start Dependent Functions Resource
- */
- status =
- acpi_rs_start_depend_fns_resource
- (byte_stream_buffer, &bytes_consumed, &buffer,
- &structure_size);
- break;
-
- case ACPI_RDESC_TYPE_END_DEPENDENT:
- /*
- * End Dependent Functions Resource
- */
- status =
- acpi_rs_end_depend_fns_resource(byte_stream_buffer,
- &bytes_consumed,
- &buffer,
- &structure_size);
- break;
-
- case ACPI_RDESC_TYPE_IO_PORT:
- /*
- * IO Port Resource
- */
- status = acpi_rs_io_resource(byte_stream_buffer,
- &bytes_consumed, &buffer,
- &structure_size);
- break;
-
- case ACPI_RDESC_TYPE_FIXED_IO_PORT:
- /*
- * Fixed IO Port Resource
- */
- status = acpi_rs_fixed_io_resource(byte_stream_buffer,
- &bytes_consumed,
- &buffer,
- &structure_size);
- break;
-
- case ACPI_RDESC_TYPE_SMALL_VENDOR:
- /*
- * Vendor Specific Resource
- */
- status = acpi_rs_vendor_resource(byte_stream_buffer,
- &bytes_consumed,
- &buffer,
- &structure_size);
- break;
-
- case ACPI_RDESC_TYPE_END_TAG:
- /*
- * End Tag
- */
- end_tag_processed = TRUE;
- status = acpi_rs_end_tag_resource(byte_stream_buffer,
- &bytes_consumed,
- &buffer,
- &structure_size);
- break;
-
- default:
- /*
- * Invalid/Unknown resource type
- */
+ /* Loop until end-of-buffer or an end_tag is found */
+
+ while (bytes_parsed < byte_stream_buffer_length) {
+ /* Get the handler associated with this Descriptor Type */
+
+ handler = acpi_rs_get_resource_handler(*byte_stream_buffer);
+ if (handler) {
+ /* Convert a byte stream resource to local resource struct */
+
+ status = handler(byte_stream_buffer, &bytes_consumed,
+ &buffer, &structure_size);
+ } else {
+ /* Invalid resource type */
+
status = AE_AML_INVALID_RESOURCE_TYPE;
- break;
}
if (ACPI_FAILURE(status)) {
return_ACPI_STATUS(status);
}
- /* Update the return value and counter */
+ /* Set the aligned length of the new resource descriptor */
- bytes_parsed += bytes_consumed;
+ resource = ACPI_CAST_PTR(struct acpi_resource, buffer);
+ resource->length =
+ (u32) ACPI_ALIGN_RESOURCE_SIZE(resource->length);
- /* Set the byte stream to point to the next resource */
+ /* Normal exit on completion of an end_tag resource descriptor */
+ if (acpi_rs_get_resource_type(*byte_stream_buffer) ==
+ ACPI_RDESC_TYPE_END_TAG) {
+ return_ACPI_STATUS(AE_OK);
+ }
+
+ /* Update counter and point to the next input resource */
+
+ bytes_parsed += bytes_consumed;
byte_stream_buffer += bytes_consumed;
- /* Set the Buffer to the next structure */
+ /* Point to the next structure in the output buffer */
- resource = ACPI_CAST_PTR(struct acpi_resource, buffer);
- resource->length =
- (u32) ACPI_ALIGN_RESOURCE_SIZE(resource->length);
buffer += ACPI_ALIGN_RESOURCE_SIZE(structure_size);
}
- /* Check the reason for exiting the while loop */
+ /* Completed buffer, but did not find an end_tag resource descriptor */
- if (!end_tag_processed) {
- return_ACPI_STATUS(AE_AML_NO_RESOURCE_END_TAG);
- }
-
- return_ACPI_STATUS(AE_OK);
+ return_ACPI_STATUS(AE_AML_NO_RESOURCE_END_TAG);
}
/*******************************************************************************
*
* FUNCTION: acpi_rs_list_to_byte_stream
*
- * PARAMETERS: linked_list - Pointer to the resource linked list
+ * 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()
******************************************************************************/
acpi_status
-acpi_rs_list_to_byte_stream(struct acpi_resource *linked_list,
+acpi_rs_list_to_byte_stream(struct acpi_resource *resource,
acpi_size byte_stream_size_needed,
u8 * output_buffer)
{
- acpi_status status;
u8 *buffer = output_buffer;
acpi_size bytes_consumed = 0;
- u8 done = FALSE;
+ acpi_status status;
ACPI_FUNCTION_TRACE("rs_list_to_byte_stream");
- while (!done) {
- switch (linked_list->id) {
- case ACPI_RSTYPE_IRQ:
- /*
- * IRQ Resource
- */
- status =
- acpi_rs_irq_stream(linked_list, &buffer,
- &bytes_consumed);
- break;
-
- case ACPI_RSTYPE_DMA:
- /*
- * DMA Resource
- */
- status =
- acpi_rs_dma_stream(linked_list, &buffer,
- &bytes_consumed);
- break;
-
- case ACPI_RSTYPE_START_DPF:
- /*
- * Start Dependent Functions Resource
- */
- status = acpi_rs_start_depend_fns_stream(linked_list,
- &buffer,
- &bytes_consumed);
- break;
-
- case ACPI_RSTYPE_END_DPF:
- /*
- * End Dependent Functions Resource
- */
- status = acpi_rs_end_depend_fns_stream(linked_list,
- &buffer,
- &bytes_consumed);
- break;
-
- case ACPI_RSTYPE_IO:
- /*
- * IO Port Resource
- */
- status =
- acpi_rs_io_stream(linked_list, &buffer,
- &bytes_consumed);
- break;
-
- case ACPI_RSTYPE_FIXED_IO:
- /*
- * Fixed IO Port Resource
- */
- status =
- acpi_rs_fixed_io_stream(linked_list, &buffer,
- &bytes_consumed);
- break;
-
- case ACPI_RSTYPE_VENDOR:
- /*
- * Vendor Defined Resource
- */
- status =
- acpi_rs_vendor_stream(linked_list, &buffer,
- &bytes_consumed);
- break;
-
- case ACPI_RSTYPE_END_TAG:
- /*
- * End Tag
- */
- status =
- acpi_rs_end_tag_stream(linked_list, &buffer,
- &bytes_consumed);
+ /* Convert each resource descriptor in the list */
- /* An End Tag indicates the end of the Resource Template */
+ while (1) {
+ /* Validate Type before dispatch */
- done = TRUE;
- break;
-
- case ACPI_RSTYPE_MEM24:
- /*
- * 24-Bit Memory Resource
- */
- status =
- acpi_rs_memory24_stream(linked_list, &buffer,
- &bytes_consumed);
- break;
-
- case ACPI_RSTYPE_MEM32:
- /*
- * 32-Bit Memory Range Resource
- */
- status =
- acpi_rs_memory32_range_stream(linked_list, &buffer,
- &bytes_consumed);
- break;
-
- case ACPI_RSTYPE_FIXED_MEM32:
- /*
- * 32-Bit Fixed Memory Resource
- */
- status =
- acpi_rs_fixed_memory32_stream(linked_list, &buffer,
- &bytes_consumed);
- break;
-
- case ACPI_RSTYPE_ADDRESS16:
- /*
- * 16-Bit Address Descriptor Resource
- */
- status = acpi_rs_address16_stream(linked_list, &buffer,
- &bytes_consumed);
- break;
-
- case ACPI_RSTYPE_ADDRESS32:
- /*
- * 32-Bit Address Descriptor Resource
- */
- status = acpi_rs_address32_stream(linked_list, &buffer,
- &bytes_consumed);
- break;
-
- case ACPI_RSTYPE_ADDRESS64:
- /*
- * 64-Bit Address Descriptor Resource
- */
- status = acpi_rs_address64_stream(linked_list, &buffer,
- &bytes_consumed);
- break;
-
- case ACPI_RSTYPE_EXT_IRQ:
- /*
- * Extended IRQ Resource
- */
- status =
- acpi_rs_extended_irq_stream(linked_list, &buffer,
- &bytes_consumed);
- break;
-
- default:
- /*
- * If we get here, everything is out of sync,
- * so exit with an error
- */
+ if (resource->type > ACPI_RSTYPE_MAX) {
ACPI_DEBUG_PRINT((ACPI_DB_ERROR,
"Invalid descriptor type (%X) in resource list\n",
- linked_list->id));
- status = AE_BAD_DATA;
- break;
+ resource->type));
+ return_ACPI_STATUS(AE_BAD_DATA);
}
+ /* Perform the conversion, per resource type */
+
+ status = acpi_gbl_stream_dispatch[resource->type] (resource,
+ &buffer,
+ &bytes_consumed);
if (ACPI_FAILURE(status)) {
return_ACPI_STATUS(status);
}
- /* Set the Buffer to point to the open byte */
+ /* Check for end-of-list */
+
+ if (resource->type == ACPI_RSTYPE_END_TAG) {
+ /* An End Tag indicates the end of the Resource Template */
+
+ return_ACPI_STATUS(AE_OK);
+ }
+
+ /* Set the Buffer to point to the next (output) resource descriptor */
buffer += bytes_consumed;
- /* Point to the next object */
+ /* Point to the next input resource object */
- linked_list = ACPI_PTR_ADD(struct acpi_resource,
- linked_list, linked_list->length);
+ resource = ACPI_PTR_ADD(struct acpi_resource,
+ resource, resource->length);
}
-
- return_ACPI_STATUS(AE_OK);
}
projects / firefly-linux-kernel-4.4.55.git / blobdiff