******************************************************************************/
/*
- * 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 <acpi/acpi.h>
#include <acpi/acnamesp.h>
#include <acpi/acresrc.h>
-
#define _COMPONENT ACPI_RESOURCES
- ACPI_MODULE_NAME ("rsutils")
+ACPI_MODULE_NAME("rsutils")
+
+/*******************************************************************************
+ *
+ * FUNCTION: acpi_rs_decode_bitmask
+ *
+ * PARAMETERS: Mask - Bitmask to decode
+ * List - Where the converted list is returned
+ *
+ * RETURN: Count of bits set (length of list)
+ *
+ * DESCRIPTION: Convert a bit mask into a list of values
+ *
+ ******************************************************************************/
+u8 acpi_rs_decode_bitmask(u16 mask, u8 * list)
+{
+ acpi_native_uint i;
+ u8 bit_count;
+
+ ACPI_FUNCTION_ENTRY();
+
+ /* Decode the mask bits */
+
+ for (i = 0, bit_count = 0; mask; i++) {
+ if (mask & 0x0001) {
+ list[bit_count] = (u8) i;
+ bit_count++;
+ }
+
+ mask >>= 1;
+ }
+
+ return (bit_count);
+}
+
+/*******************************************************************************
+ *
+ * FUNCTION: acpi_rs_encode_bitmask
+ *
+ * PARAMETERS: List - List of values to encode
+ * Count - Length of list
+ *
+ * RETURN: Encoded bitmask
+ *
+ * DESCRIPTION: Convert a list of values to an encoded bitmask
+ *
+ ******************************************************************************/
+
+u16 acpi_rs_encode_bitmask(u8 * list, u8 count)
+{
+ acpi_native_uint i;
+ u16 mask;
+
+ ACPI_FUNCTION_ENTRY();
+
+ /* Encode the list into a single bitmask */
+
+ for (i = 0, mask = 0; i < count; i++) {
+ mask |= (0x0001 << list[i]);
+ }
+
+ return (mask);
+}
+
+/*******************************************************************************
+ *
+ * FUNCTION: acpi_rs_move_data
+ *
+ * PARAMETERS: Destination - Pointer to the destination descriptor
+ * Source - Pointer to the source descriptor
+ * item_count - How many items to move
+ * move_type - Byte width
+ *
+ * RETURN: None
+ *
+ * DESCRIPTION: Move multiple data items from one descriptor to another. Handles
+ * alignment issues and endian issues if necessary, as configured
+ * via the ACPI_MOVE_* macros. (This is why a memcpy is not used)
+ *
+ ******************************************************************************/
+
+void
+acpi_rs_move_data(void *destination, void *source, u16 item_count, u8 move_type)
+{
+ acpi_native_uint i;
+
+ ACPI_FUNCTION_ENTRY();
+
+ /* One move per item */
+
+ for (i = 0; i < item_count; i++) {
+ switch (move_type) {
+ /*
+ * For the 8-bit case, we can perform the move all at once
+ * since there are no alignment or endian issues
+ */
+ case ACPI_RSC_MOVE8:
+ ACPI_MEMCPY(destination, source, item_count);
+ return;
+
+ /*
+ * 16-, 32-, and 64-bit cases must use the move macros that perform
+ * endian conversion and/or accomodate hardware that cannot perform
+ * misaligned memory transfers
+ */
+ case ACPI_RSC_MOVE16:
+ ACPI_MOVE_16_TO_16(&ACPI_CAST_PTR(u16, destination)[i],
+ &ACPI_CAST_PTR(u16, source)[i]);
+ break;
+
+ case ACPI_RSC_MOVE32:
+ ACPI_MOVE_32_TO_32(&ACPI_CAST_PTR(u32, destination)[i],
+ &ACPI_CAST_PTR(u32, source)[i]);
+ break;
+
+ case ACPI_RSC_MOVE64:
+ ACPI_MOVE_64_TO_64(&ACPI_CAST_PTR(u64, destination)[i],
+ &ACPI_CAST_PTR(u64, source)[i]);
+ break;
+
+ default:
+ return;
+ }
+ }
+}
+
+/*******************************************************************************
+ *
+ * FUNCTION: acpi_rs_set_resource_length
+ *
+ * PARAMETERS: total_length - Length of the AML descriptor, including
+ * the header and length fields.
+ * Aml - Pointer to the raw AML descriptor
+ *
+ * RETURN: None
+ *
+ * DESCRIPTION: Set the resource_length field of an AML
+ * resource descriptor, both Large and Small descriptors are
+ * supported automatically. Note: Descriptor Type field must
+ * be valid.
+ *
+ ******************************************************************************/
+
+void
+acpi_rs_set_resource_length(acpi_rsdesc_size total_length,
+ union aml_resource *aml)
+{
+ acpi_rs_length resource_length;
+
+ ACPI_FUNCTION_ENTRY();
+
+ /* Length is the total descriptor length minus the header length */
+
+ resource_length = (acpi_rs_length)
+ (total_length - acpi_ut_get_resource_header_length(aml));
+
+ /* Length is stored differently for large and small descriptors */
+
+ if (aml->small_header.descriptor_type & ACPI_RESOURCE_NAME_LARGE) {
+ /* Large descriptor -- bytes 1-2 contain the 16-bit length */
+
+ ACPI_MOVE_16_TO_16(&aml->large_header.resource_length,
+ &resource_length);
+ } else {
+ /* Small descriptor -- bits 2:0 of byte 0 contain the length */
+
+ aml->small_header.descriptor_type = (u8)
+
+ /* Clear any existing length, preserving descriptor type bits */
+ ((aml->small_header.
+ descriptor_type & ~ACPI_RESOURCE_NAME_SMALL_LENGTH_MASK)
+
+ | resource_length);
+ }
+}
+
+/*******************************************************************************
+ *
+ * FUNCTION: acpi_rs_set_resource_header
+ *
+ * PARAMETERS: descriptor_type - Byte to be inserted as the type
+ * total_length - Length of the AML descriptor, including
+ * the header and length fields.
+ * Aml - Pointer to the raw AML descriptor
+ *
+ * RETURN: None
+ *
+ * DESCRIPTION: Set the descriptor_type and resource_length fields of an AML
+ * resource descriptor, both Large and Small descriptors are
+ * supported automatically
+ *
+ ******************************************************************************/
+
+void
+acpi_rs_set_resource_header(u8 descriptor_type,
+ acpi_rsdesc_size total_length,
+ union aml_resource *aml)
+{
+ ACPI_FUNCTION_ENTRY();
+
+ /* Set the Resource Type */
+
+ aml->small_header.descriptor_type = descriptor_type;
+
+ /* Set the Resource Length */
+
+ acpi_rs_set_resource_length(total_length, aml);
+}
+
+/*******************************************************************************
+ *
+ * FUNCTION: acpi_rs_strcpy
+ *
+ * PARAMETERS: Destination - Pointer to the destination string
+ * Source - Pointer to the source string
+ *
+ * RETURN: String length, including NULL terminator
+ *
+ * DESCRIPTION: Local string copy that returns the string length, saving a
+ * strcpy followed by a strlen.
+ *
+ ******************************************************************************/
+
+static u16 acpi_rs_strcpy(char *destination, char *source)
+{
+ u16 i;
+
+ ACPI_FUNCTION_ENTRY();
+
+ for (i = 0; source[i]; i++) {
+ destination[i] = source[i];
+ }
+
+ destination[i] = 0;
+
+ /* Return string length including the NULL terminator */
+ return ((u16) (i + 1));
+}
+
+/*******************************************************************************
+ *
+ * FUNCTION: acpi_rs_get_resource_source
+ *
+ * PARAMETERS: resource_length - Length field of the descriptor
+ * minimum_length - Minimum length of the descriptor (minus
+ * any optional fields)
+ * resource_source - Where the resource_source is returned
+ * Aml - Pointer to the raw AML descriptor
+ * string_ptr - (optional) where to store the actual
+ * resource_source string
+ *
+ * RETURN: Length of the string plus NULL terminator, rounded up to 32 bit
+ *
+ * DESCRIPTION: Copy the optional resource_source data from a raw AML descriptor
+ * to an internal resource descriptor
+ *
+ ******************************************************************************/
+
+acpi_rs_length
+acpi_rs_get_resource_source(acpi_rs_length resource_length,
+ acpi_rs_length minimum_length,
+ struct acpi_resource_source * resource_source,
+ union aml_resource * aml, char *string_ptr)
+{
+ acpi_rsdesc_size total_length;
+ u8 *aml_resource_source;
+
+ ACPI_FUNCTION_ENTRY();
+
+ total_length =
+ resource_length + sizeof(struct aml_resource_large_header);
+ aml_resource_source = ACPI_ADD_PTR(u8, aml, minimum_length);
+
+ /*
+ * resource_source is present if the length of the descriptor is longer than
+ * the minimum length.
+ *
+ * Note: Some resource descriptors will have an additional null, so
+ * we add 1 to the minimum length.
+ */
+ if (total_length > (acpi_rsdesc_size) (minimum_length + 1)) {
+ /* Get the resource_source_index */
+
+ resource_source->index = aml_resource_source[0];
+
+ resource_source->string_ptr = string_ptr;
+ if (!string_ptr) {
+ /*
+ * String destination pointer is not specified; Set the String
+ * pointer to the end of the current resource_source structure.
+ */
+ resource_source->string_ptr =
+ ACPI_ADD_PTR(char, resource_source,
+ sizeof(struct acpi_resource_source));
+ }
+
+ /*
+ * In order for the struct_size to fall on a 32-bit boundary, calculate
+ * the length of the string (+1 for the NULL terminator) and expand the
+ * struct_size to the next 32-bit boundary.
+ *
+ * Zero the entire area of the buffer.
+ */
+ total_length =
+ ACPI_ROUND_UP_to_32_bITS(ACPI_STRLEN
+ ((char *)&aml_resource_source[1]) +
+ 1);
+ ACPI_MEMSET(resource_source->string_ptr, 0, total_length);
+
+ /* Copy the resource_source string to the destination */
+
+ resource_source->string_length =
+ acpi_rs_strcpy(resource_source->string_ptr,
+ (char *)&aml_resource_source[1]);
+
+ return ((acpi_rs_length) total_length);
+ }
+
+ /* resource_source is not present */
+
+ resource_source->index = 0;
+ resource_source->string_length = 0;
+ resource_source->string_ptr = NULL;
+ return (0);
+}
+
+/*******************************************************************************
+ *
+ * FUNCTION: acpi_rs_set_resource_source
+ *
+ * PARAMETERS: Aml - Pointer to the raw AML descriptor
+ * minimum_length - Minimum length of the descriptor (minus
+ * any optional fields)
+ * resource_source - Internal resource_source
+
+ *
+ * RETURN: Total length of the AML descriptor
+ *
+ * DESCRIPTION: Convert an optional resource_source from internal format to a
+ * raw AML resource descriptor
+ *
+ ******************************************************************************/
+
+acpi_rsdesc_size
+acpi_rs_set_resource_source(union aml_resource * aml,
+ acpi_rs_length minimum_length,
+ struct acpi_resource_source * resource_source)
+{
+ u8 *aml_resource_source;
+ acpi_rsdesc_size descriptor_length;
+
+ ACPI_FUNCTION_ENTRY();
+
+ descriptor_length = minimum_length;
+
+ /* Non-zero string length indicates presence of a resource_source */
+
+ if (resource_source->string_length) {
+ /* Point to the end of the AML descriptor */
+
+ aml_resource_source = ACPI_ADD_PTR(u8, aml, minimum_length);
+
+ /* Copy the resource_source_index */
+
+ aml_resource_source[0] = (u8) resource_source->index;
+
+ /* Copy the resource_source string */
+
+ ACPI_STRCPY((char *)&aml_resource_source[1],
+ resource_source->string_ptr);
+
+ /*
+ * Add the length of the string (+ 1 for null terminator) to the
+ * final descriptor length
+ */
+ descriptor_length +=
+ ((acpi_rsdesc_size) resource_source->string_length + 1);
+ }
+
+ /* Return the new total length of the AML descriptor */
+
+ return (descriptor_length);
+}
/*******************************************************************************
*
******************************************************************************/
acpi_status
-acpi_rs_get_prt_method_data (
- acpi_handle handle,
- struct acpi_buffer *ret_buffer)
+acpi_rs_get_prt_method_data(acpi_handle handle, struct acpi_buffer * ret_buffer)
{
- union acpi_operand_object *obj_desc;
- acpi_status status;
-
-
- ACPI_FUNCTION_TRACE ("rs_get_prt_method_data");
+ union acpi_operand_object *obj_desc;
+ acpi_status status;
+ ACPI_FUNCTION_TRACE("rs_get_prt_method_data");
/* Parameters guaranteed valid by caller */
- /*
- * Execute the method, no parameters
- */
- status = acpi_ut_evaluate_object (handle, "_PRT", ACPI_BTYPE_PACKAGE, &obj_desc);
- if (ACPI_FAILURE (status)) {
- return_ACPI_STATUS (status);
+ /* Execute the method, no parameters */
+
+ status = acpi_ut_evaluate_object(handle, METHOD_NAME__PRT,
+ ACPI_BTYPE_PACKAGE, &obj_desc);
+ if (ACPI_FAILURE(status)) {
+ return_ACPI_STATUS(status);
}
/*
* Create a resource linked list from the byte stream buffer that comes
* back from the _CRS method execution.
*/
- status = acpi_rs_create_pci_routing_table (obj_desc, ret_buffer);
+ status = acpi_rs_create_pci_routing_table(obj_desc, ret_buffer);
/* On exit, we must delete the object returned by evaluate_object */
- acpi_ut_remove_reference (obj_desc);
- return_ACPI_STATUS (status);
+ acpi_ut_remove_reference(obj_desc);
+ return_ACPI_STATUS(status);
}
-
/*******************************************************************************
*
* FUNCTION: acpi_rs_get_crs_method_data
******************************************************************************/
acpi_status
-acpi_rs_get_crs_method_data (
- acpi_handle handle,
- struct acpi_buffer *ret_buffer)
+acpi_rs_get_crs_method_data(acpi_handle handle, struct acpi_buffer *ret_buffer)
{
- union acpi_operand_object *obj_desc;
- acpi_status status;
-
-
- ACPI_FUNCTION_TRACE ("rs_get_crs_method_data");
+ union acpi_operand_object *obj_desc;
+ acpi_status status;
+ ACPI_FUNCTION_TRACE("rs_get_crs_method_data");
/* Parameters guaranteed valid by caller */
- /*
- * Execute the method, no parameters
- */
- status = acpi_ut_evaluate_object (handle, "_CRS", ACPI_BTYPE_BUFFER, &obj_desc);
- if (ACPI_FAILURE (status)) {
- return_ACPI_STATUS (status);
+ /* Execute the method, no parameters */
+
+ status = acpi_ut_evaluate_object(handle, METHOD_NAME__CRS,
+ ACPI_BTYPE_BUFFER, &obj_desc);
+ if (ACPI_FAILURE(status)) {
+ return_ACPI_STATUS(status);
}
/*
* byte stream buffer that comes back from the _CRS method
* execution.
*/
- status = acpi_rs_create_resource_list (obj_desc, ret_buffer);
+ status = acpi_rs_create_resource_list(obj_desc, ret_buffer);
/* on exit, we must delete the object returned by evaluate_object */
- acpi_ut_remove_reference (obj_desc);
- return_ACPI_STATUS (status);
+ acpi_ut_remove_reference(obj_desc);
+ return_ACPI_STATUS(status);
}
-
/*******************************************************************************
*
* FUNCTION: acpi_rs_get_prs_method_data
* and the contents of the callers buffer is undefined.
*
******************************************************************************/
+
#ifdef ACPI_FUTURE_USAGE
acpi_status
-acpi_rs_get_prs_method_data (
- acpi_handle handle,
- struct acpi_buffer *ret_buffer)
+acpi_rs_get_prs_method_data(acpi_handle handle, struct acpi_buffer *ret_buffer)
{
- union acpi_operand_object *obj_desc;
- acpi_status status;
-
-
- ACPI_FUNCTION_TRACE ("rs_get_prs_method_data");
+ union acpi_operand_object *obj_desc;
+ acpi_status status;
+ ACPI_FUNCTION_TRACE("rs_get_prs_method_data");
/* Parameters guaranteed valid by caller */
- /*
- * Execute the method, no parameters
- */
- status = acpi_ut_evaluate_object (handle, "_PRS", ACPI_BTYPE_BUFFER, &obj_desc);
- if (ACPI_FAILURE (status)) {
- return_ACPI_STATUS (status);
+ /* Execute the method, no parameters */
+
+ status = acpi_ut_evaluate_object(handle, METHOD_NAME__PRS,
+ ACPI_BTYPE_BUFFER, &obj_desc);
+ if (ACPI_FAILURE(status)) {
+ return_ACPI_STATUS(status);
}
/*
* byte stream buffer that comes back from the _CRS method
* execution.
*/
- status = acpi_rs_create_resource_list (obj_desc, ret_buffer);
+ status = acpi_rs_create_resource_list(obj_desc, ret_buffer);
/* on exit, we must delete the object returned by evaluate_object */
- acpi_ut_remove_reference (obj_desc);
- return_ACPI_STATUS (status);
+ acpi_ut_remove_reference(obj_desc);
+ return_ACPI_STATUS(status);
}
-#endif /* ACPI_FUTURE_USAGE */
-
+#endif /* ACPI_FUTURE_USAGE */
/*******************************************************************************
*
* FUNCTION: acpi_rs_get_method_data
*
* PARAMETERS: Handle - a handle to the containing object
+ * Path - Path to method, relative to Handle
* ret_buffer - a pointer to a buffer structure for the
* results
*
******************************************************************************/
acpi_status
-acpi_rs_get_method_data (
- acpi_handle handle,
- char *path,
- struct acpi_buffer *ret_buffer)
+acpi_rs_get_method_data(acpi_handle handle,
+ char *path, struct acpi_buffer *ret_buffer)
{
- union acpi_operand_object *obj_desc;
- acpi_status status;
-
-
- ACPI_FUNCTION_TRACE ("rs_get_method_data");
+ union acpi_operand_object *obj_desc;
+ acpi_status status;
+ ACPI_FUNCTION_TRACE("rs_get_method_data");
/* Parameters guaranteed valid by caller */
- /*
- * Execute the method, no parameters
- */
- status = acpi_ut_evaluate_object (handle, path, ACPI_BTYPE_BUFFER, &obj_desc);
- if (ACPI_FAILURE (status)) {
- return_ACPI_STATUS (status);
+ /* Execute the method, no parameters */
+
+ status =
+ acpi_ut_evaluate_object(handle, path, ACPI_BTYPE_BUFFER, &obj_desc);
+ if (ACPI_FAILURE(status)) {
+ return_ACPI_STATUS(status);
}
/*
* byte stream buffer that comes back from the method
* execution.
*/
- status = acpi_rs_create_resource_list (obj_desc, ret_buffer);
+ status = acpi_rs_create_resource_list(obj_desc, ret_buffer);
/* On exit, we must delete the object returned by evaluate_object */
- acpi_ut_remove_reference (obj_desc);
- return_ACPI_STATUS (status);
+ acpi_ut_remove_reference(obj_desc);
+ return_ACPI_STATUS(status);
}
/*******************************************************************************
******************************************************************************/
acpi_status
-acpi_rs_set_srs_method_data (
- acpi_handle handle,
- struct acpi_buffer *in_buffer)
+acpi_rs_set_srs_method_data(acpi_handle handle, struct acpi_buffer *in_buffer)
{
- struct acpi_parameter_info info;
- union acpi_operand_object *params[2];
- acpi_status status;
- struct acpi_buffer buffer;
-
-
- ACPI_FUNCTION_TRACE ("rs_set_srs_method_data");
+ struct acpi_parameter_info info;
+ union acpi_operand_object *params[2];
+ acpi_status status;
+ struct acpi_buffer buffer;
+ ACPI_FUNCTION_TRACE("rs_set_srs_method_data");
/* Parameters guaranteed valid by caller */
* Convert the linked list into a byte stream
*/
buffer.length = ACPI_ALLOCATE_LOCAL_BUFFER;
- status = acpi_rs_create_byte_stream (in_buffer->pointer, &buffer);
- if (ACPI_FAILURE (status)) {
- return_ACPI_STATUS (status);
+ status = acpi_rs_create_aml_resources(in_buffer->pointer, &buffer);
+ if (ACPI_FAILURE(status)) {
+ return_ACPI_STATUS(status);
}
- /*
- * Init the param object
- */
- params[0] = acpi_ut_create_internal_object (ACPI_TYPE_BUFFER);
+ /* Init the param object */
+
+ params[0] = acpi_ut_create_internal_object(ACPI_TYPE_BUFFER);
if (!params[0]) {
- acpi_os_free (buffer.pointer);
- return_ACPI_STATUS (AE_NO_MEMORY);
+ acpi_os_free(buffer.pointer);
+ return_ACPI_STATUS(AE_NO_MEMORY);
}
- /*
- * Set up the parameter object
- */
- params[0]->buffer.length = (u32) buffer.length;
+ /* Set up the parameter object */
+
+ params[0]->buffer.length = (u32) buffer.length;
params[0]->buffer.pointer = buffer.pointer;
- params[0]->common.flags = AOPOBJ_DATA_VALID;
+ params[0]->common.flags = AOPOBJ_DATA_VALID;
params[1] = NULL;
info.node = handle;
info.parameters = params;
info.parameter_type = ACPI_PARAM_ARGS;
- /*
- * Execute the method, no return value
- */
- status = acpi_ns_evaluate_relative ("_SRS", &info);
- if (ACPI_SUCCESS (status)) {
+ /* Execute the method, no return value */
+
+ status = acpi_ns_evaluate_relative(METHOD_NAME__SRS, &info);
+ if (ACPI_SUCCESS(status)) {
/* Delete any return object (especially if implicit_return is enabled) */
if (info.return_object) {
- acpi_ut_remove_reference (info.return_object);
+ acpi_ut_remove_reference(info.return_object);
}
}
- /*
- * Clean up and return the status from acpi_ns_evaluate_relative
- */
- acpi_ut_remove_reference (params[0]);
- return_ACPI_STATUS (status);
-}
+ /* Clean up and return the status from acpi_ns_evaluate_relative */
+ acpi_ut_remove_reference(params[0]);
+ return_ACPI_STATUS(status);
+}
git://git.onelab.eu / linux-2.6.git / blobdiff