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Diffstat (limited to 'drivers/acpi/resources/rslist.c')
-rw-r--r--drivers/acpi/resources/rslist.c92
1 files changed, 47 insertions, 45 deletions
diff --git a/drivers/acpi/resources/rslist.c b/drivers/acpi/resources/rslist.c
index f72d42e0927..ee17ef3315f 100644
--- a/drivers/acpi/resources/rslist.c
+++ b/drivers/acpi/resources/rslist.c
@@ -48,7 +48,8 @@
ACPI_MODULE_NAME("rslist")
/* Local prototypes */
-static ACPI_GET_RESOURCE_HANDLER acpi_rs_get_resource_handler(u8 resource_type);
+static struct acpi_rsconvert_info *acpi_rs_get_conversion_info(u8
+ resource_type);
static acpi_status acpi_rs_validate_resource_length(union aml_resource *aml);
@@ -83,7 +84,7 @@ static acpi_status acpi_rs_validate_resource_length(union aml_resource *aml)
return (AE_AML_INVALID_RESOURCE_TYPE);
}
- resource_length = acpi_rs_get_resource_length(aml);
+ resource_length = acpi_ut_get_resource_length(aml);
minimum_aml_resource_length =
resource_info->minimum_aml_resource_length;
@@ -115,18 +116,17 @@ static acpi_status acpi_rs_validate_resource_length(union aml_resource *aml)
/*******************************************************************************
*
- * FUNCTION: acpi_rs_get_resource_handler
+ * FUNCTION: acpi_rs_get_conversion_info
*
* PARAMETERS: resource_type - Byte 0 of a resource descriptor
*
- * RETURN: Pointer to the resource conversion handler
+ * RETURN: Pointer to the resource conversion info table
*
- * DESCRIPTION: Extract the Resource Type/Name from the first byte of
- * a resource descriptor.
+ * DESCRIPTION: Get the conversion table associated with this resource type
*
******************************************************************************/
-static ACPI_GET_RESOURCE_HANDLER acpi_rs_get_resource_handler(u8 resource_type)
+static struct acpi_rsconvert_info *acpi_rs_get_conversion_info(u8 resource_type)
{
ACPI_FUNCTION_ENTRY();
@@ -174,33 +174,24 @@ acpi_rs_convert_aml_to_resources(u8 * aml_buffer,
acpi_status status;
acpi_size bytes_parsed = 0;
struct acpi_resource *resource;
- u16 resource_length;
- u32 descriptor_length;
- ACPI_GET_RESOURCE_HANDLER handler;
+ acpi_rsdesc_size descriptor_length;
+ struct acpi_rsconvert_info *info;
ACPI_FUNCTION_TRACE("rs_convert_aml_to_resources");
/* Loop until end-of-buffer or an end_tag is found */
while (bytes_parsed < aml_buffer_length) {
- /* Get the handler associated with this Descriptor Type */
+ /* Get the conversion table associated with this Descriptor Type */
- handler = acpi_rs_get_resource_handler(*aml_buffer);
- if (!handler) {
- /* No handler indicates invalid resource type */
+ info = acpi_rs_get_conversion_info(*aml_buffer);
+ if (!info) {
+ /* No table indicates an invalid resource type */
return_ACPI_STATUS(AE_AML_INVALID_RESOURCE_TYPE);
}
- resource_length =
- acpi_rs_get_resource_length(ACPI_CAST_PTR
- (union aml_resource,
- aml_buffer));
-
- descriptor_length =
- acpi_rs_get_descriptor_length(ACPI_CAST_PTR
- (union aml_resource,
- aml_buffer));
+ descriptor_length = acpi_ut_get_descriptor_length(aml_buffer);
/*
* Perform limited validation of the resource length, based upon
@@ -214,11 +205,16 @@ acpi_rs_convert_aml_to_resources(u8 * aml_buffer,
return_ACPI_STATUS(status);
}
- /* Convert a byte stream resource to local resource struct */
+ /* Convert the AML byte stream resource to a local resource struct */
- status = handler(ACPI_CAST_PTR(union aml_resource, aml_buffer),
- resource_length,
- ACPI_CAST_PTR(struct acpi_resource, buffer));
+ status =
+ acpi_rs_convert_aml_to_resource(ACPI_CAST_PTR
+ (struct acpi_resource,
+ buffer),
+ ACPI_CAST_PTR(union
+ aml_resource,
+ aml_buffer),
+ info);
if (ACPI_FAILURE(status)) {
ACPI_REPORT_ERROR(("Could not convert AML resource (type %X) to resource, %s\n", *aml_buffer, acpi_format_exception(status)));
return_ACPI_STATUS(status);
@@ -232,7 +228,7 @@ acpi_rs_convert_aml_to_resources(u8 * aml_buffer,
/* Normal exit on completion of an end_tag resource descriptor */
- if (acpi_rs_get_resource_type(*aml_buffer) ==
+ if (acpi_ut_get_resource_type(aml_buffer) ==
ACPI_RESOURCE_NAME_END_TAG) {
return_ACPI_STATUS(AE_OK);
}
@@ -276,14 +272,15 @@ acpi_rs_convert_resources_to_aml(struct acpi_resource *resource,
acpi_size aml_size_needed, u8 * output_buffer)
{
u8 *aml_buffer = output_buffer;
+ u8 *end_aml_buffer = output_buffer + aml_size_needed;
acpi_status status;
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 Resource Descriptor Type before dispatch */
+ while (aml_buffer < end_aml_buffer) {
+ /* Validate the Resource Type */
if (resource->type > ACPI_RESOURCE_TYPE_MAX) {
ACPI_DEBUG_PRINT((ACPI_DB_ERROR,
@@ -292,14 +289,14 @@ acpi_rs_convert_resources_to_aml(struct acpi_resource *resource,
return_ACPI_STATUS(AE_BAD_DATA);
}
- /* Perform the conversion per resource type */
+ /* Perform the conversion */
- status =
- acpi_gbl_set_resource_dispatch[resource->type] (resource,
- ACPI_CAST_PTR
- (union
- aml_resource,
- aml_buffer));
+ status = acpi_rs_convert_resource_to_aml(resource,
+ ACPI_CAST_PTR(union
+ aml_resource,
+ aml_buffer),
+ 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);
@@ -323,18 +320,23 @@ acpi_rs_convert_resources_to_aml(struct acpi_resource *resource,
return_ACPI_STATUS(AE_OK);
}
- /* Extract the total length of the new descriptor */
- /* Set the aml_buffer to point to the next (output) resource descriptor */
-
- aml_buffer +=
- acpi_rs_get_descriptor_length(ACPI_CAST_PTR
- (union aml_resource,
- aml_buffer));
+ /*
+ * Extract the total length of the new descriptor and set the
+ * aml_buffer to point to the next (output) resource descriptor
+ */
+ aml_buffer += acpi_ut_get_descriptor_length(aml_buffer);
/* Point to the next input resource descriptor */
resource =
ACPI_PTR_ADD(struct acpi_resource, resource,
resource->length);
+
+ /* Check for end-of-list, normal exit */
+
}
+
+ /* Completed buffer, but did not find an end_tag resource descriptor */
+
+ return_ACPI_STATUS(AE_AML_NO_RESOURCE_END_TAG);
}
generated by cgit v1.2.3-70-g09d2 (git 2.46.0) at 2024-11-28 00:46:19 +0000