diff options
Diffstat (limited to 'drivers/acpi/resources/rsutils.c')
| -rw-r--r-- | drivers/acpi/resources/rsutils.c | 726 |
1 files changed, 0 insertions, 726 deletions
diff --git a/drivers/acpi/resources/rsutils.c b/drivers/acpi/resources/rsutils.c deleted file mode 100644 index f7b3bcd59ba..00000000000 --- a/drivers/acpi/resources/rsutils.c +++ /dev/null @@ -1,726 +0,0 @@ -/******************************************************************************* - * - * Module Name: rsutils - Utilities for the resource manager - * - ******************************************************************************/ - -/* - * Copyright (C) 2000 - 2008, Intel Corp. - * All rights reserved. - * - * Redistribution and use in source and binary forms, with or without - * modification, are permitted provided that the following conditions - * are met: - * 1. Redistributions of source code must retain the above copyright - * notice, this list of conditions, and the following disclaimer, - * without modification. - * 2. Redistributions in binary form must reproduce at minimum a disclaimer - * substantially similar to the "NO WARRANTY" disclaimer below - * ("Disclaimer") and any redistribution must be conditioned upon - * including a substantially similar Disclaimer requirement for further - * binary redistribution. - * 3. Neither the names of the above-listed copyright holders nor the names - * of any contributors may be used to endorse or promote products derived - * from this software without specific prior written permission. - * - * Alternatively, this software may be distributed under the terms of the - * GNU General Public License ("GPL") version 2 as published by the Free - * Software Foundation. - * - * NO WARRANTY - * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS - * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT - * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTIBILITY AND FITNESS FOR - * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT - * HOLDERS OR CONTRIBUTORS BE LIABLE FOR SPECIAL, EXEMPLARY, OR CONSEQUENTIAL - * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS - * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) - * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, - * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING - * IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE - * POSSIBILITY OF SUCH DAMAGES. - */ - -#include <acpi/acpi.h> -#include <acpi/acnamesp.h> -#include <acpi/acresrc.h> - -#define _COMPONENT ACPI_RESOURCES -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) -{ - u8 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] = 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) -{ - u32 i; - u16 mask; - - ACPI_FUNCTION_ENTRY(); - - /* Encode the list into a single bitmask */ - - for (i = 0, mask = 0; i < count; i++) { - mask |= (0x1 << 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) -{ - u32 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 native - * word boundary - * - * 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 Resource length to be a multiple of the native - * word, calculate the length of the string (+1 for NULL terminator) - * and expand to the next word multiple. - * - * Zero the entire area of the buffer. - */ - total_length = (u32) - ACPI_STRLEN(ACPI_CAST_PTR(char, &aml_resource_source[1])) + 1; - total_length = (u32) ACPI_ROUND_UP_TO_NATIVE_WORD(total_length); - - 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, - ACPI_CAST_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(ACPI_CAST_PTR(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); -} - -/******************************************************************************* - * - * FUNCTION: acpi_rs_get_prt_method_data - * - * PARAMETERS: Node - Device node - * ret_buffer - Pointer to a buffer structure for the - * results - * - * RETURN: Status - * - * DESCRIPTION: This function is called to get the _PRT value of an object - * contained in an object specified by the handle passed in - * - * If the function fails an appropriate status will be returned - * and the contents of the callers buffer is undefined. - * - ******************************************************************************/ - -acpi_status -acpi_rs_get_prt_method_data(struct acpi_namespace_node * node, - struct acpi_buffer * ret_buffer) -{ - 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(node, 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); - - /* On exit, we must delete the object returned by evaluate_object */ - - acpi_ut_remove_reference(obj_desc); - return_ACPI_STATUS(status); -} - -/******************************************************************************* - * - * FUNCTION: acpi_rs_get_crs_method_data - * - * PARAMETERS: Node - Device node - * ret_buffer - Pointer to a buffer structure for the - * results - * - * RETURN: Status - * - * DESCRIPTION: This function is called to get the _CRS value of an object - * contained in an object specified by the handle passed in - * - * If the function fails an appropriate status will be returned - * and the contents of the callers buffer is undefined. - * - ******************************************************************************/ - -acpi_status -acpi_rs_get_crs_method_data(struct acpi_namespace_node *node, - struct acpi_buffer *ret_buffer) -{ - 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(node, METHOD_NAME__CRS, - ACPI_BTYPE_BUFFER, &obj_desc); - if (ACPI_FAILURE(status)) { - return_ACPI_STATUS(status); - } - - /* - * Make the call to create a resource linked list from the - * byte stream buffer that comes back from the _CRS method - * execution. - */ - 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); -} - -/******************************************************************************* - * - * FUNCTION: acpi_rs_get_prs_method_data - * - * PARAMETERS: Node - Device node - * ret_buffer - Pointer to a buffer structure for the - * results - * - * RETURN: Status - * - * DESCRIPTION: This function is called to get the _PRS value of an object - * contained in an object specified by the handle passed in - * - * If the function fails an appropriate status will be returned - * and the contents of the callers buffer is undefined. - * - ******************************************************************************/ - -#ifdef ACPI_FUTURE_USAGE -acpi_status -acpi_rs_get_prs_method_data(struct acpi_namespace_node *node, - struct acpi_buffer *ret_buffer) -{ - 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(node, METHOD_NAME__PRS, - ACPI_BTYPE_BUFFER, &obj_desc); - if (ACPI_FAILURE(status)) { - return_ACPI_STATUS(status); - } - - /* - * Make the call to create a resource linked list from the - * byte stream buffer that comes back from the _CRS method - * execution. - */ - 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); -} -#endif /* ACPI_FUTURE_USAGE */ - -/******************************************************************************* - * - * FUNCTION: acpi_rs_get_method_data - * - * PARAMETERS: Handle - Handle to the containing object - * Path - Path to method, relative to Handle - * ret_buffer - Pointer to a buffer structure for the - * results - * - * RETURN: Status - * - * DESCRIPTION: This function is called to get the _CRS or _PRS value of an - * object contained in an object specified by the handle passed in - * - * If the function fails an appropriate status will be returned - * and the contents of the callers buffer is undefined. - * - ******************************************************************************/ - -acpi_status -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); - - /* 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); - } - - /* - * Make the call to create a resource linked list from the - * byte stream buffer that comes back from the method - * execution. - */ - 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); -} - -/******************************************************************************* - * - * FUNCTION: acpi_rs_set_srs_method_data - * - * PARAMETERS: Node - Device node - * in_buffer - Pointer to a buffer structure of the - * parameter - * - * RETURN: Status - * - * DESCRIPTION: This function is called to set the _SRS of an object contained - * in an object specified by the handle passed in - * - * If the function fails an appropriate status will be returned - * and the contents of the callers buffer is undefined. - * - * Note: Parameters guaranteed valid by caller - * - ******************************************************************************/ - -acpi_status -acpi_rs_set_srs_method_data(struct acpi_namespace_node *node, - struct acpi_buffer *in_buffer) -{ - struct acpi_evaluate_info *info; - union acpi_operand_object *args[2]; - acpi_status status; - struct acpi_buffer buffer; - - ACPI_FUNCTION_TRACE(rs_set_srs_method_data); - - /* Allocate and initialize the evaluation information block */ - - info = ACPI_ALLOCATE_ZEROED(sizeof(struct acpi_evaluate_info)); - if (!info) { - return_ACPI_STATUS(AE_NO_MEMORY); - } - - info->prefix_node = node; - info->pathname = METHOD_NAME__SRS; - info->parameters = args; - info->flags = ACPI_IGNORE_RETURN_VALUE; - - /* - * The in_buffer parameter will point to a linked list of - * resource parameters. It needs to be formatted into a - * byte stream to be sent in as an input parameter to _SRS - * - * Convert the linked list into a byte stream - */ - buffer.length = ACPI_ALLOCATE_LOCAL_BUFFER; - status = acpi_rs_create_aml_resources(in_buffer->pointer, &buffer); - if (ACPI_FAILURE(status)) { - goto cleanup; - } - - /* Create and initialize the method parameter object */ - - args[0] = acpi_ut_create_internal_object(ACPI_TYPE_BUFFER); - if (!args[0]) { - /* - * Must free the buffer allocated above (otherwise it is freed - * later) - */ - ACPI_FREE(buffer.pointer); - status = AE_NO_MEMORY; - goto cleanup; - } - - args[0]->buffer.length = (u32) buffer.length; - args[0]->buffer.pointer = buffer.pointer; - args[0]->common.flags = AOPOBJ_DATA_VALID; - args[1] = NULL; - - /* Execute the method, no return value is expected */ - - status = acpi_ns_evaluate(info); - - /* Clean up and return the status from acpi_ns_evaluate */ - - acpi_ut_remove_reference(args[0]); - - cleanup: - ACPI_FREE(info); - return_ACPI_STATUS(status); -} |