******************************************************************************/
/*
- * Copyright (C) 2000 - 2005, R. Byron Moore
+ * Copyright (C) 2000 - 2006, R. Byron Moore
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* POSSIBILITY OF SUCH DAMAGES.
*/
-#include <linux/module.h>
-
#include <acpi/acpi.h>
#include <acpi/acresrc.h>
+#include <acpi/acnamesp.h>
#define _COMPONENT ACPI_RESOURCES
- ACPI_MODULE_NAME ("rsxface")
+ACPI_MODULE_NAME("rsxface")
+
+/* Local macros for 16,32-bit to 64-bit conversion */
+#define ACPI_COPY_FIELD(out, in, field) ((out)->field = (in)->field)
+#define ACPI_COPY_ADDRESS(out, in) \
+ ACPI_COPY_FIELD(out, in, resource_type); \
+ ACPI_COPY_FIELD(out, in, producer_consumer); \
+ ACPI_COPY_FIELD(out, in, decode); \
+ ACPI_COPY_FIELD(out, in, min_address_fixed); \
+ ACPI_COPY_FIELD(out, in, max_address_fixed); \
+ ACPI_COPY_FIELD(out, in, info); \
+ ACPI_COPY_FIELD(out, in, granularity); \
+ ACPI_COPY_FIELD(out, in, minimum); \
+ ACPI_COPY_FIELD(out, in, maximum); \
+ ACPI_COPY_FIELD(out, in, translation_offset); \
+ ACPI_COPY_FIELD(out, in, address_length); \
+ ACPI_COPY_FIELD(out, in, resource_source);
+/* Local prototypes */
+static acpi_status
+acpi_rs_match_vendor_resource(struct acpi_resource *resource, void *context);
+
+static acpi_status
+acpi_rs_validate_parameters(acpi_handle device_handle,
+ struct acpi_buffer *buffer,
+ struct acpi_namespace_node **return_node);
+
+/*******************************************************************************
+ *
+ * FUNCTION: acpi_rs_validate_parameters
+ *
+ * PARAMETERS: device_handle - Handle to a device
+ * Buffer - Pointer to a data buffer
+ * return_node - Pointer to where the device node is returned
+ *
+ * RETURN: Status
+ *
+ * DESCRIPTION: Common parameter validation for resource interfaces
+ *
+ ******************************************************************************/
+
+static acpi_status
+acpi_rs_validate_parameters(acpi_handle device_handle,
+ struct acpi_buffer *buffer,
+ struct acpi_namespace_node **return_node)
+{
+ acpi_status status;
+ struct acpi_namespace_node *node;
+
+ ACPI_FUNCTION_TRACE(rs_validate_parameters);
+
+ /*
+ * Must have a valid handle to an ACPI device
+ */
+ if (!device_handle) {
+ return_ACPI_STATUS(AE_BAD_PARAMETER);
+ }
+
+ node = acpi_ns_map_handle_to_node(device_handle);
+ if (!node) {
+ return_ACPI_STATUS(AE_BAD_PARAMETER);
+ }
+ if (node->type != ACPI_TYPE_DEVICE) {
+ return_ACPI_STATUS(AE_TYPE);
+ }
+
+ /*
+ * Validate the user buffer object
+ *
+ * if there is a non-zero buffer length we also need a valid pointer in
+ * the buffer. If it's a zero buffer length, we'll be returning the
+ * needed buffer size (later), so keep going.
+ */
+ status = acpi_ut_validate_buffer(buffer);
+ if (ACPI_FAILURE(status)) {
+ return_ACPI_STATUS(status);
+ }
+
+ *return_node = node;
+ return_ACPI_STATUS(AE_OK);
+}
/*******************************************************************************
*
* FUNCTION: acpi_get_irq_routing_table
*
- * PARAMETERS: device_handle - a handle to the Bus device we are querying
- * ret_buffer - a pointer to a buffer to receive the
+ * PARAMETERS: device_handle - Handle to the Bus device we are querying
+ * ret_buffer - Pointer to a buffer to receive the
* current resources for the device
*
* RETURN: Status
*
* DESCRIPTION: This function is called to get the IRQ routing table for a
- * specific bus. The caller must first acquire a handle for the
- * desired bus. The routine table is placed in the buffer pointed
+ * specific bus. The caller must first acquire a handle for the
+ * desired bus. The routine table is placed in the buffer pointed
* to by the ret_buffer variable parameter.
*
* If the function fails an appropriate status will be returned
******************************************************************************/
acpi_status
-acpi_get_irq_routing_table (
- acpi_handle device_handle,
- struct acpi_buffer *ret_buffer)
+acpi_get_irq_routing_table(acpi_handle device_handle,
+ struct acpi_buffer *ret_buffer)
{
- acpi_status status;
-
+ acpi_status status;
+ struct acpi_namespace_node *node;
- ACPI_FUNCTION_TRACE ("acpi_get_irq_routing_table ");
+ ACPI_FUNCTION_TRACE(acpi_get_irq_routing_table);
+ /* Validate parameters then dispatch to internal routine */
- /*
- * Must have a valid handle and buffer, So we have to have a handle
- * and a return buffer structure, and if there is a non-zero buffer length
- * we also need a valid pointer in the buffer. If it's a zero buffer length,
- * we'll be returning the needed buffer size, so keep going.
- */
- if (!device_handle) {
- return_ACPI_STATUS (AE_BAD_PARAMETER);
+ status = acpi_rs_validate_parameters(device_handle, ret_buffer, &node);
+ if (ACPI_FAILURE(status)) {
+ return_ACPI_STATUS(status);
}
- status = acpi_ut_validate_buffer (ret_buffer);
- if (ACPI_FAILURE (status)) {
- return_ACPI_STATUS (status);
- }
-
- status = acpi_rs_get_prt_method_data (device_handle, ret_buffer);
- return_ACPI_STATUS (status);
+ status = acpi_rs_get_prt_method_data(node, ret_buffer);
+ return_ACPI_STATUS(status);
}
+ACPI_EXPORT_SYMBOL(acpi_get_irq_routing_table)
/*******************************************************************************
*
* FUNCTION: acpi_get_current_resources
*
- * PARAMETERS: device_handle - a handle to the device object for the
+ * PARAMETERS: device_handle - Handle to the device object for the
* device we are querying
- * ret_buffer - a pointer to a buffer to receive the
+ * ret_buffer - Pointer to a buffer to receive the
* current resources for the device
*
* RETURN: Status
*
* DESCRIPTION: This function is called to get the current resources for a
- * specific device. The caller must first acquire a handle for
- * the desired device. The resource data is placed in the buffer
+ * specific device. The caller must first acquire a handle for
+ * the desired device. The resource data is placed in the buffer
* pointed to by the ret_buffer variable parameter.
*
* If the function fails an appropriate status will be returned
* the object indicated by the passed device_handle.
*
******************************************************************************/
-
acpi_status
-acpi_get_current_resources (
- acpi_handle device_handle,
- struct acpi_buffer *ret_buffer)
+acpi_get_current_resources(acpi_handle device_handle,
+ struct acpi_buffer *ret_buffer)
{
- acpi_status status;
+ acpi_status status;
+ struct acpi_namespace_node *node;
+ ACPI_FUNCTION_TRACE(acpi_get_current_resources);
- ACPI_FUNCTION_TRACE ("acpi_get_current_resources");
+ /* Validate parameters then dispatch to internal routine */
-
- /*
- * Must have a valid handle and buffer, So we have to have a handle
- * and a return buffer structure, and if there is a non-zero buffer length
- * we also need a valid pointer in the buffer. If it's a zero buffer length,
- * we'll be returning the needed buffer size, so keep going.
- */
- if (!device_handle) {
- return_ACPI_STATUS (AE_BAD_PARAMETER);
- }
-
- status = acpi_ut_validate_buffer (ret_buffer);
- if (ACPI_FAILURE (status)) {
- return_ACPI_STATUS (status);
+ status = acpi_rs_validate_parameters(device_handle, ret_buffer, &node);
+ if (ACPI_FAILURE(status)) {
+ return_ACPI_STATUS(status);
}
- status = acpi_rs_get_crs_method_data (device_handle, ret_buffer);
- return_ACPI_STATUS (status);
+ status = acpi_rs_get_crs_method_data(node, ret_buffer);
+ return_ACPI_STATUS(status);
}
-EXPORT_SYMBOL(acpi_get_current_resources);
+ACPI_EXPORT_SYMBOL(acpi_get_current_resources)
+#ifdef ACPI_FUTURE_USAGE
/*******************************************************************************
*
* FUNCTION: acpi_get_possible_resources
*
- * PARAMETERS: device_handle - a handle to the device object for the
+ * PARAMETERS: device_handle - Handle to the device object for the
* device we are querying
- * ret_buffer - a pointer to a buffer to receive the
+ * ret_buffer - Pointer to a buffer to receive the
* resources for the device
*
* RETURN: Status
*
* DESCRIPTION: This function is called to get a list of the possible resources
- * for a specific device. The caller must first acquire a handle
- * for the desired device. The resource data is placed in the
+ * for a specific device. The caller must first acquire a handle
+ * for the desired device. The resource data is placed in the
* buffer pointed to by the ret_buffer variable.
*
* If the function fails an appropriate status will be returned
* and the value of ret_buffer is undefined.
*
******************************************************************************/
-#ifdef ACPI_FUTURE_USAGE
acpi_status
-acpi_get_possible_resources (
- acpi_handle device_handle,
- struct acpi_buffer *ret_buffer)
+acpi_get_possible_resources(acpi_handle device_handle,
+ struct acpi_buffer *ret_buffer)
{
- acpi_status status;
-
+ acpi_status status;
+ struct acpi_namespace_node *node;
- ACPI_FUNCTION_TRACE ("acpi_get_possible_resources");
+ ACPI_FUNCTION_TRACE(acpi_get_possible_resources);
+ /* Validate parameters then dispatch to internal routine */
- /*
- * Must have a valid handle and buffer, So we have to have a handle
- * and a return buffer structure, and if there is a non-zero buffer length
- * we also need a valid pointer in the buffer. If it's a zero buffer length,
- * we'll be returning the needed buffer size, so keep going.
- */
- if (!device_handle) {
- return_ACPI_STATUS (AE_BAD_PARAMETER);
+ status = acpi_rs_validate_parameters(device_handle, ret_buffer, &node);
+ if (ACPI_FAILURE(status)) {
+ return_ACPI_STATUS(status);
}
- status = acpi_ut_validate_buffer (ret_buffer);
- if (ACPI_FAILURE (status)) {
- return_ACPI_STATUS (status);
- }
-
- status = acpi_rs_get_prs_method_data (device_handle, ret_buffer);
- return_ACPI_STATUS (status);
+ status = acpi_rs_get_prs_method_data(node, ret_buffer);
+ return_ACPI_STATUS(status);
}
-EXPORT_SYMBOL(acpi_get_possible_resources);
-#endif /* ACPI_FUTURE_USAGE */
+ACPI_EXPORT_SYMBOL(acpi_get_possible_resources)
+#endif /* ACPI_FUTURE_USAGE */
/*******************************************************************************
*
- * FUNCTION: acpi_walk_resources
+ * FUNCTION: acpi_set_current_resources
*
- * PARAMETERS: device_handle - a handle to the device object for the
- * device we are querying
- * Path - method name of the resources we want
- * (METHOD_NAME__CRS or METHOD_NAME__PRS)
- * user_function - called for each resource
- * Context - passed to user_function
+ * PARAMETERS: device_handle - Handle to the device object for the
+ * device we are setting resources
+ * in_buffer - Pointer to a buffer containing the
+ * resources to be set for the device
*
* RETURN: Status
*
- * DESCRIPTION: Retrieves the current or possible resource list for the
- * specified device. The user_function is called once for
- * each resource in the list.
+ * DESCRIPTION: This function is called to set the current resources for a
+ * specific device. The caller must first acquire a handle for
+ * the desired device. The resource data is passed to the routine
+ * the buffer pointed to by the in_buffer variable.
*
******************************************************************************/
-
acpi_status
-acpi_walk_resources (
- acpi_handle device_handle,
- char *path,
- ACPI_WALK_RESOURCE_CALLBACK user_function,
- void *context)
+acpi_set_current_resources(acpi_handle device_handle,
+ struct acpi_buffer *in_buffer)
{
- acpi_status status;
- struct acpi_buffer buffer = {ACPI_ALLOCATE_BUFFER, NULL};
- struct acpi_resource *resource;
- struct acpi_resource *buffer_end;
-
+ acpi_status status;
+ struct acpi_namespace_node *node;
- ACPI_FUNCTION_TRACE ("acpi_walk_resources");
+ ACPI_FUNCTION_TRACE(acpi_set_current_resources);
+ /* Validate the buffer, don't allow zero length */
- if (!device_handle ||
- (ACPI_STRNCMP (path, METHOD_NAME__CRS, sizeof (METHOD_NAME__CRS)) &&
- ACPI_STRNCMP (path, METHOD_NAME__PRS, sizeof (METHOD_NAME__PRS)))) {
- return_ACPI_STATUS (AE_BAD_PARAMETER);
+ if ((!in_buffer) || (!in_buffer->pointer) || (!in_buffer->length)) {
+ return_ACPI_STATUS(AE_BAD_PARAMETER);
}
- status = acpi_rs_get_method_data (device_handle, path, &buffer);
- if (ACPI_FAILURE (status)) {
- return_ACPI_STATUS (status);
+ /* Validate parameters then dispatch to internal routine */
+
+ status = acpi_rs_validate_parameters(device_handle, in_buffer, &node);
+ if (ACPI_FAILURE(status)) {
+ return_ACPI_STATUS(status);
}
- /* Setup pointers */
+ status = acpi_rs_set_srs_method_data(node, in_buffer);
+ return_ACPI_STATUS(status);
+}
- resource = (struct acpi_resource *) buffer.pointer;
- buffer_end = ACPI_CAST_PTR (struct acpi_resource,
- ((u8 *) buffer.pointer + buffer.length));
+ACPI_EXPORT_SYMBOL(acpi_set_current_resources)
- /* Walk the resource list */
+/******************************************************************************
+ *
+ * FUNCTION: acpi_resource_to_address64
+ *
+ * PARAMETERS: Resource - Pointer to a resource
+ * Out - Pointer to the users's return buffer
+ * (a struct acpi_resource_address64)
+ *
+ * RETURN: Status
+ *
+ * DESCRIPTION: If the resource is an address16, address32, or address64,
+ * copy it to the address64 return buffer. This saves the
+ * caller from having to duplicate code for different-sized
+ * addresses.
+ *
+ ******************************************************************************/
+acpi_status
+acpi_resource_to_address64(struct acpi_resource *resource,
+ struct acpi_resource_address64 *out)
+{
+ struct acpi_resource_address16 *address16;
+ struct acpi_resource_address32 *address32;
- for (;;) {
- if (!resource || resource->id == ACPI_RSTYPE_END_TAG) {
- break;
- }
+ if (!resource || !out) {
+ return (AE_BAD_PARAMETER);
+ }
- status = user_function (resource, context);
+ /* Convert 16 or 32 address descriptor to 64 */
- switch (status) {
- case AE_OK:
- case AE_CTRL_DEPTH:
+ switch (resource->type) {
+ case ACPI_RESOURCE_TYPE_ADDRESS16:
- /* Just keep going */
+ address16 = (struct acpi_resource_address16 *)&resource->data;
+ ACPI_COPY_ADDRESS(out, address16);
+ break;
- status = AE_OK;
- break;
+ case ACPI_RESOURCE_TYPE_ADDRESS32:
- case AE_CTRL_TERMINATE:
+ address32 = (struct acpi_resource_address32 *)&resource->data;
+ ACPI_COPY_ADDRESS(out, address32);
+ break;
- /* Exit now, with OK stats */
+ case ACPI_RESOURCE_TYPE_ADDRESS64:
- status = AE_OK;
- goto cleanup;
+ /* Simple copy for 64 bit source */
- default:
+ ACPI_MEMCPY(out, &resource->data,
+ sizeof(struct acpi_resource_address64));
+ break;
- /* All others are valid exceptions */
+ default:
+ return (AE_BAD_PARAMETER);
+ }
- goto cleanup;
- }
+ return (AE_OK);
+}
- /* Get the next resource descriptor */
+ACPI_EXPORT_SYMBOL(acpi_resource_to_address64)
- resource = ACPI_NEXT_RESOURCE (resource);
+/*******************************************************************************
+ *
+ * FUNCTION: acpi_get_vendor_resource
+ *
+ * PARAMETERS: device_handle - Handle for the parent device object
+ * Name - Method name for the parent resource
+ * (METHOD_NAME__CRS or METHOD_NAME__PRS)
+ * Uuid - Pointer to the UUID to be matched.
+ * includes both subtype and 16-byte UUID
+ * ret_buffer - Where the vendor resource is returned
+ *
+ * RETURN: Status
+ *
+ * DESCRIPTION: Walk a resource template for the specified evice to find a
+ * vendor-defined resource that matches the supplied UUID and
+ * UUID subtype. Returns a struct acpi_resource of type Vendor.
+ *
+ ******************************************************************************/
+acpi_status
+acpi_get_vendor_resource(acpi_handle device_handle,
+ char *name,
+ struct acpi_vendor_uuid * uuid,
+ struct acpi_buffer * ret_buffer)
+{
+ struct acpi_vendor_walk_info info;
+ acpi_status status;
- /* Check for end-of-buffer */
+ /* Other parameters are validated by acpi_walk_resources */
- if (resource >= buffer_end) {
- goto cleanup;
- }
+ if (!uuid || !ret_buffer) {
+ return (AE_BAD_PARAMETER);
}
-cleanup:
+ info.uuid = uuid;
+ info.buffer = ret_buffer;
+ info.status = AE_NOT_EXIST;
+
+ /* Walk the _CRS or _PRS resource list for this device */
- acpi_os_free (buffer.pointer);
- return_ACPI_STATUS (status);
+ status =
+ acpi_walk_resources(device_handle, name,
+ acpi_rs_match_vendor_resource, &info);
+ if (ACPI_FAILURE(status)) {
+ return (status);
+ }
+
+ return (info.status);
}
-EXPORT_SYMBOL(acpi_walk_resources);
+ACPI_EXPORT_SYMBOL(acpi_get_vendor_resource)
/*******************************************************************************
*
- * FUNCTION: acpi_set_current_resources
+ * FUNCTION: acpi_rs_match_vendor_resource
*
- * PARAMETERS: device_handle - a handle to the device object for the
- * device we are changing the resources of
- * in_buffer - a pointer to a buffer containing the
- * resources to be set for the device
+ * PARAMETERS: acpi_walk_resource_callback
*
* RETURN: Status
*
- * DESCRIPTION: This function is called to set the current resources for a
- * specific device. The caller must first acquire a handle for
- * the desired device. The resource data is passed to the routine
- * the buffer pointed to by the in_buffer variable.
+ * DESCRIPTION: Match a vendor resource via the ACPI 3.0 UUID
*
******************************************************************************/
-
-acpi_status
-acpi_set_current_resources (
- acpi_handle device_handle,
- struct acpi_buffer *in_buffer)
+static acpi_status
+acpi_rs_match_vendor_resource(struct acpi_resource *resource, void *context)
{
- acpi_status status;
+ struct acpi_vendor_walk_info *info = context;
+ struct acpi_resource_vendor_typed *vendor;
+ struct acpi_buffer *buffer;
+ acpi_status status;
+ /* Ignore all descriptors except Vendor */
- ACPI_FUNCTION_TRACE ("acpi_set_current_resources");
+ if (resource->type != ACPI_RESOURCE_TYPE_VENDOR) {
+ return (AE_OK);
+ }
+ vendor = &resource->data.vendor_typed;
/*
- * Must have a valid handle and buffer
+ * For a valid match, these conditions must hold:
+ *
+ * 1) Length of descriptor data must be at least as long as a UUID struct
+ * 2) The UUID subtypes must match
+ * 3) The UUID data must match
*/
- if ((!device_handle) ||
- (!in_buffer) ||
- (!in_buffer->pointer) ||
- (!in_buffer->length)) {
- return_ACPI_STATUS (AE_BAD_PARAMETER);
+ if ((vendor->byte_length < (ACPI_UUID_LENGTH + 1)) ||
+ (vendor->uuid_subtype != info->uuid->subtype) ||
+ (ACPI_MEMCMP(vendor->uuid, info->uuid->data, ACPI_UUID_LENGTH))) {
+ return (AE_OK);
}
- status = acpi_rs_set_srs_method_data (device_handle, in_buffer);
- return_ACPI_STATUS (status);
-}
-EXPORT_SYMBOL(acpi_set_current_resources);
+ /* Validate/Allocate/Clear caller buffer */
+ buffer = info->buffer;
+ status = acpi_ut_initialize_buffer(buffer, resource->length);
+ if (ACPI_FAILURE(status)) {
+ return (status);
+ }
-#define ACPI_COPY_FIELD(out, in, field) ((out)->field = (in)->field)
-#define ACPI_COPY_ADDRESS(out, in) \
- ACPI_COPY_FIELD(out, in, resource_type); \
- ACPI_COPY_FIELD(out, in, producer_consumer); \
- ACPI_COPY_FIELD(out, in, decode); \
- ACPI_COPY_FIELD(out, in, min_address_fixed); \
- ACPI_COPY_FIELD(out, in, max_address_fixed); \
- ACPI_COPY_FIELD(out, in, attribute); \
- ACPI_COPY_FIELD(out, in, granularity); \
- ACPI_COPY_FIELD(out, in, min_address_range); \
- ACPI_COPY_FIELD(out, in, max_address_range); \
- ACPI_COPY_FIELD(out, in, address_translation_offset); \
- ACPI_COPY_FIELD(out, in, address_length); \
- ACPI_COPY_FIELD(out, in, resource_source);
+ /* Found the correct resource, copy and return it */
-/******************************************************************************
+ ACPI_MEMCPY(buffer->pointer, resource, resource->length);
+ buffer->length = resource->length;
+
+ /* Found the desired descriptor, terminate resource walk */
+
+ info->status = AE_OK;
+ return (AE_CTRL_TERMINATE);
+}
+
+ACPI_EXPORT_SYMBOL(acpi_rs_match_vendor_resource)
+
+/*******************************************************************************
*
- * FUNCTION: acpi_resource_to_address64
+ * FUNCTION: acpi_walk_resources
*
- * PARAMETERS: resource - Pointer to a resource
- * out - Pointer to the users's return
- * buffer (a struct
- * struct acpi_resource_address64)
+ * PARAMETERS: device_handle - Handle to the device object for the
+ * device we are querying
+ * Name - Method name of the resources we want
+ * (METHOD_NAME__CRS or METHOD_NAME__PRS)
+ * user_function - Called for each resource
+ * Context - Passed to user_function
*
* RETURN: Status
*
- * DESCRIPTION: If the resource is an address16, address32, or address64,
- * copy it to the address64 return buffer. This saves the
- * caller from having to duplicate code for different-sized
- * addresses.
+ * DESCRIPTION: Retrieves the current or possible resource list for the
+ * specified device. The user_function is called once for
+ * each resource in the list.
*
******************************************************************************/
acpi_status
-acpi_resource_to_address64 (
- struct acpi_resource *resource,
- struct acpi_resource_address64 *out)
+acpi_walk_resources(acpi_handle device_handle,
+ char *name,
+ acpi_walk_resource_callback user_function, void *context)
{
- struct acpi_resource_address16 *address16;
- struct acpi_resource_address32 *address32;
+ acpi_status status;
+ struct acpi_buffer buffer;
+ struct acpi_resource *resource;
+ struct acpi_resource *resource_end;
+ ACPI_FUNCTION_TRACE(acpi_walk_resources);
- switch (resource->id) {
- case ACPI_RSTYPE_ADDRESS16:
+ /* Parameter validation */
- address16 = (struct acpi_resource_address16 *) &resource->data;
- ACPI_COPY_ADDRESS(out, address16);
- break;
+ if (!device_handle || !user_function || !name ||
+ (!ACPI_COMPARE_NAME(name, METHOD_NAME__CRS) &&
+ !ACPI_COMPARE_NAME(name, METHOD_NAME__PRS))) {
+ return_ACPI_STATUS(AE_BAD_PARAMETER);
+ }
+ /* Get the _CRS or _PRS resource list */
- case ACPI_RSTYPE_ADDRESS32:
+ buffer.length = ACPI_ALLOCATE_LOCAL_BUFFER;
+ status = acpi_rs_get_method_data(device_handle, name, &buffer);
+ if (ACPI_FAILURE(status)) {
+ return_ACPI_STATUS(status);
+ }
- address32 = (struct acpi_resource_address32 *) &resource->data;
- ACPI_COPY_ADDRESS(out, address32);
- break;
+ /* Buffer now contains the resource list */
+ resource = ACPI_CAST_PTR(struct acpi_resource, buffer.pointer);
+ resource_end =
+ ACPI_ADD_PTR(struct acpi_resource, buffer.pointer, buffer.length);
- case ACPI_RSTYPE_ADDRESS64:
+ /* Walk the resource list until the end_tag is found (or buffer end) */
- /* Simple copy for 64 bit source */
+ while (resource < resource_end) {
- ACPI_MEMCPY (out, &resource->data, sizeof (struct acpi_resource_address64));
- break;
+ /* Sanity check the resource */
+ if (resource->type > ACPI_RESOURCE_TYPE_MAX) {
+ status = AE_AML_INVALID_RESOURCE_TYPE;
+ break;
+ }
- default:
- return (AE_BAD_PARAMETER);
+ /* Invoke the user function, abort on any error returned */
+
+ status = user_function(resource, context);
+ if (ACPI_FAILURE(status)) {
+ if (status == AE_CTRL_TERMINATE) {
+
+ /* This is an OK termination by the user function */
+
+ status = AE_OK;
+ }
+ break;
+ }
+
+ /* end_tag indicates end-of-list */
+
+ if (resource->type == ACPI_RESOURCE_TYPE_END_TAG) {
+ break;
+ }
+
+ /* Get the next resource descriptor */
+
+ resource =
+ ACPI_ADD_PTR(struct acpi_resource, resource,
+ resource->length);
}
- return (AE_OK);
+ ACPI_FREE(buffer.pointer);
+ return_ACPI_STATUS(status);
}
-EXPORT_SYMBOL(acpi_resource_to_address64);
+ACPI_EXPORT_SYMBOL(acpi_walk_resources)
git://git.onelab.eu / linux-2.6.git / blobdiff