resources.h File Reference

#include <uacpi/internal/types.h>
#include <uacpi/resources.h>

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Go to the source code of this file.

Classes
struct	uacpi_resource_convert_instruction
struct	uacpi_resource_spec

Typedefs
typedef uacpi_iteration_decision(*	uacpi_aml_resource_iteration_callback) (void *, uacpi_u8 *data, uacpi_u16 resource_size, const struct uacpi_resource_spec *)

Enumerations
enum	uacpi_aml_resource {   UACPI_AML_RESOURCE_TYPE_INVALID = 0 , UACPI_AML_RESOURCE_IRQ , UACPI_AML_RESOURCE_DMA , UACPI_AML_RESOURCE_START_DEPENDENT ,   UACPI_AML_RESOURCE_END_DEPENDENT , UACPI_AML_RESOURCE_IO , UACPI_AML_RESOURCE_FIXED_IO , UACPI_AML_RESOURCE_FIXED_DMA ,   UACPI_AML_RESOURCE_VENDOR_TYPE0 , UACPI_AML_RESOURCE_END_TAG , UACPI_AML_RESOURCE_MEMORY24 , UACPI_AML_RESOURCE_GENERIC_REGISTER ,   UACPI_AML_RESOURCE_VENDOR_TYPE1 , UACPI_AML_RESOURCE_MEMORY32 , UACPI_AML_RESOURCE_FIXED_MEMORY32 , UACPI_AML_RESOURCE_ADDRESS32 ,   UACPI_AML_RESOURCE_ADDRESS16 , UACPI_AML_RESOURCE_EXTENDED_IRQ , UACPI_AML_RESOURCE_ADDRESS64 , UACPI_AML_RESOURCE_ADDRESS64_EXTENDED ,   UACPI_AML_RESOURCE_GPIO_CONNECTION , UACPI_AML_RESOURCE_PIN_FUNCTION , UACPI_AML_RESOURCE_SERIAL_CONNECTION , UACPI_AML_RESOURCE_PIN_CONFIGURATION ,   UACPI_AML_RESOURCE_PIN_GROUP , UACPI_AML_RESOURCE_PIN_GROUP_FUNCTION , UACPI_AML_RESOURCE_PIN_GROUP_CONFIGURATION , UACPI_AML_RESOURCE_CLOCK_INPUT ,   UACPI_AML_RESOURCE_MAX = UACPI_AML_RESOURCE_CLOCK_INPUT }
enum	uacpi_aml_resource_size_kind { UACPI_AML_RESOURCE_SIZE_KIND_FIXED , UACPI_AML_RESOURCE_SIZE_KIND_FIXED_OR_ONE_LESS , UACPI_AML_RESOURCE_SIZE_KIND_VARIABLE }
enum	uacpi_aml_resource_kind { UACPI_AML_RESOURCE_KIND_SMALL = 0 , UACPI_AML_RESOURCE_KIND_LARGE }
enum	uacpi_resource_convert_opcode {   UACPI_RESOURCE_CONVERT_OPCODE_END = 0 , UACPI_RESOURCE_CONVERT_OPCODE_PACKED_ARRAY_8 , UACPI_RESOURCE_CONVERT_OPCODE_PACKED_ARRAY_16 , UACPI_RESOURCE_CONVERT_OPCODE_BIT_FIELD_1 ,   UACPI_RESOURCE_CONVERT_OPCODE_BIT_FIELD_2 , UACPI_RESOURCE_CONVERT_OPCODE_BIT_FIELD_3 , UACPI_RESOURCE_CONVERT_OPCODE_BIT_FIELD_6 , UACPI_RESOURCE_CONVERT_OPCODE_FIELD_8 ,   UACPI_RESOURCE_CONVERT_OPCODE_FIELD_16 , UACPI_RESOURCE_CONVERT_OPCODE_FIELD_32 , UACPI_RESOURCE_CONVERT_OPCODE_FIELD_64 , UACPI_RESOURCE_CONVERT_OPCODE_SKIP_IF_AML_SIZE_LESS_THAN ,   UACPI_RESOURCE_CONVERT_OPCODE_SKIP_IF_NOT_EQUALS , UACPI_RESOURCE_CONVERT_OPCODE_SET_TO_IMM , UACPI_RESOURCE_CONVERT_OPCODE_LOAD_AML_SIZE_32 , UACPI_RESOURCE_CONVERT_OPCODE_LOAD_8_STORE ,   UACPI_RESOURCE_CONVERT_OPCODE_LOAD_8_NATIVE , UACPI_RESOURCE_CONVERT_OPCODE_LOAD_16_NATIVE , UACPI_RESOURCE_CONVERT_OPCODE_LOAD_IMM , UACPI_RESOURCE_CONVERT_OPCODE_RESOURCE_SOURCE ,   UACPI_RESOURCE_CONVERT_OPCODE_RESOURCE_SOURCE_NO_INDEX , UACPI_RESOURCE_CONVERT_OPCODE_RESOURCE_LABEL , UACPI_RESOURCE_CONVERT_OPCODE_LOAD_PIN_TABLE_LENGTH , UACPI_RESOURCE_CONVERT_OPCODE_PIN_TABLE ,   UACPI_RESOURCE_CONVERT_OPCODE_VENDOR_DATA , UACPI_RESOURCE_CONVERT_OPCODE_SERIAL_TYPE_SPECIFIC , UACPI_RESOURCE_CONVERT_OPCODE_UNREACHABLE }

Functions
uacpi_status	uacpi_for_each_aml_resource (uacpi_data_view, uacpi_aml_resource_iteration_callback cb, void *user)
uacpi_status	uacpi_find_aml_resource_end_tag (uacpi_data_view, uacpi_size *out_offset)
uacpi_status	uacpi_native_resources_from_aml (uacpi_data_view, uacpi_resources **out_resources)
uacpi_status	uacpi_native_resources_to_aml (uacpi_resources *resources, uacpi_object **out_template)

Typedef Documentation

uacpi_aml_resource_iteration_callback

typedef uacpi_iteration_decision(* uacpi_aml_resource_iteration_callback) (void *, uacpi_u8 *data, uacpi_u16 resource_size, const struct uacpi_resource_spec *)

Definition at line 306 of file resources.h.

Enumeration Type Documentation

uacpi_aml_resource

enum uacpi_aml_resource

Enumerator
UACPI_AML_RESOURCE_TYPE_INVALID
UACPI_AML_RESOURCE_IRQ
UACPI_AML_RESOURCE_DMA
UACPI_AML_RESOURCE_START_DEPENDENT
UACPI_AML_RESOURCE_END_DEPENDENT
UACPI_AML_RESOURCE_IO
UACPI_AML_RESOURCE_FIXED_IO
UACPI_AML_RESOURCE_FIXED_DMA
UACPI_AML_RESOURCE_VENDOR_TYPE0
UACPI_AML_RESOURCE_END_TAG
UACPI_AML_RESOURCE_MEMORY24
UACPI_AML_RESOURCE_GENERIC_REGISTER
UACPI_AML_RESOURCE_VENDOR_TYPE1
UACPI_AML_RESOURCE_MEMORY32
UACPI_AML_RESOURCE_FIXED_MEMORY32
UACPI_AML_RESOURCE_ADDRESS32
UACPI_AML_RESOURCE_ADDRESS16
UACPI_AML_RESOURCE_EXTENDED_IRQ
UACPI_AML_RESOURCE_ADDRESS64
UACPI_AML_RESOURCE_ADDRESS64_EXTENDED
UACPI_AML_RESOURCE_GPIO_CONNECTION
UACPI_AML_RESOURCE_PIN_FUNCTION
UACPI_AML_RESOURCE_SERIAL_CONNECTION
UACPI_AML_RESOURCE_PIN_CONFIGURATION
UACPI_AML_RESOURCE_PIN_GROUP
UACPI_AML_RESOURCE_PIN_GROUP_FUNCTION
UACPI_AML_RESOURCE_PIN_GROUP_CONFIGURATION
UACPI_AML_RESOURCE_CLOCK_INPUT
UACPI_AML_RESOURCE_MAX

Definition at line 8 of file resources.h.

                        {
    UACPI_AML_RESOURCE_TYPE_INVALID = 0,
 
    // Small resources
    UACPI_AML_RESOURCE_IRQ,
    UACPI_AML_RESOURCE_DMA,
    UACPI_AML_RESOURCE_START_DEPENDENT,
    UACPI_AML_RESOURCE_END_DEPENDENT,
    UACPI_AML_RESOURCE_IO,
    UACPI_AML_RESOURCE_FIXED_IO,
    UACPI_AML_RESOURCE_FIXED_DMA,
    UACPI_AML_RESOURCE_VENDOR_TYPE0,
    UACPI_AML_RESOURCE_END_TAG,
 
    // Large resources
    UACPI_AML_RESOURCE_MEMORY24,
    UACPI_AML_RESOURCE_GENERIC_REGISTER,
    UACPI_AML_RESOURCE_VENDOR_TYPE1,
    UACPI_AML_RESOURCE_MEMORY32,
    UACPI_AML_RESOURCE_FIXED_MEMORY32,
    UACPI_AML_RESOURCE_ADDRESS32,
    UACPI_AML_RESOURCE_ADDRESS16,
    UACPI_AML_RESOURCE_EXTENDED_IRQ,
    UACPI_AML_RESOURCE_ADDRESS64,
    UACPI_AML_RESOURCE_ADDRESS64_EXTENDED,
    UACPI_AML_RESOURCE_GPIO_CONNECTION,
    UACPI_AML_RESOURCE_PIN_FUNCTION,
    UACPI_AML_RESOURCE_SERIAL_CONNECTION,
    UACPI_AML_RESOURCE_PIN_CONFIGURATION,
    UACPI_AML_RESOURCE_PIN_GROUP,
    UACPI_AML_RESOURCE_PIN_GROUP_FUNCTION,
    UACPI_AML_RESOURCE_PIN_GROUP_CONFIGURATION,
    UACPI_AML_RESOURCE_CLOCK_INPUT,
    UACPI_AML_RESOURCE_MAX = UACPI_AML_RESOURCE_CLOCK_INPUT,
};

uacpi_aml_resource_kind

enum uacpi_aml_resource_kind

Enumerator
UACPI_AML_RESOURCE_KIND_SMALL
UACPI_AML_RESOURCE_KIND_LARGE

Definition at line 50 of file resources.h.

                             {
    UACPI_AML_RESOURCE_KIND_SMALL = 0,
    UACPI_AML_RESOURCE_KIND_LARGE,
};

uacpi_aml_resource_size_kind

enum uacpi_aml_resource_size_kind

Enumerator
UACPI_AML_RESOURCE_SIZE_KIND_FIXED
UACPI_AML_RESOURCE_SIZE_KIND_FIXED_OR_ONE_LESS
UACPI_AML_RESOURCE_SIZE_KIND_VARIABLE

Definition at line 44 of file resources.h.

                                  {
    UACPI_AML_RESOURCE_SIZE_KIND_FIXED,
    UACPI_AML_RESOURCE_SIZE_KIND_FIXED_OR_ONE_LESS,
    UACPI_AML_RESOURCE_SIZE_KIND_VARIABLE,
};

uacpi_resource_convert_opcode

enum uacpi_resource_convert_opcode

Enumerator
UACPI_RESOURCE_CONVERT_OPCODE_END
UACPI_RESOURCE_CONVERT_OPCODE_PACKED_ARRAY_8
UACPI_RESOURCE_CONVERT_OPCODE_PACKED_ARRAY_16
UACPI_RESOURCE_CONVERT_OPCODE_BIT_FIELD_1
UACPI_RESOURCE_CONVERT_OPCODE_BIT_FIELD_2
UACPI_RESOURCE_CONVERT_OPCODE_BIT_FIELD_3
UACPI_RESOURCE_CONVERT_OPCODE_BIT_FIELD_6
UACPI_RESOURCE_CONVERT_OPCODE_FIELD_8
UACPI_RESOURCE_CONVERT_OPCODE_FIELD_16
UACPI_RESOURCE_CONVERT_OPCODE_FIELD_32
UACPI_RESOURCE_CONVERT_OPCODE_FIELD_64
UACPI_RESOURCE_CONVERT_OPCODE_SKIP_IF_AML_SIZE_LESS_THAN
UACPI_RESOURCE_CONVERT_OPCODE_SKIP_IF_NOT_EQUALS
UACPI_RESOURCE_CONVERT_OPCODE_SET_TO_IMM
UACPI_RESOURCE_CONVERT_OPCODE_LOAD_AML_SIZE_32
UACPI_RESOURCE_CONVERT_OPCODE_LOAD_8_STORE
UACPI_RESOURCE_CONVERT_OPCODE_LOAD_8_NATIVE
UACPI_RESOURCE_CONVERT_OPCODE_LOAD_16_NATIVE
UACPI_RESOURCE_CONVERT_OPCODE_LOAD_IMM
UACPI_RESOURCE_CONVERT_OPCODE_RESOURCE_SOURCE
UACPI_RESOURCE_CONVERT_OPCODE_RESOURCE_SOURCE_NO_INDEX
UACPI_RESOURCE_CONVERT_OPCODE_RESOURCE_LABEL
UACPI_RESOURCE_CONVERT_OPCODE_LOAD_PIN_TABLE_LENGTH
UACPI_RESOURCE_CONVERT_OPCODE_PIN_TABLE
UACPI_RESOURCE_CONVERT_OPCODE_VENDOR_DATA
UACPI_RESOURCE_CONVERT_OPCODE_SERIAL_TYPE_SPECIFIC
UACPI_RESOURCE_CONVERT_OPCODE_UNREACHABLE

Definition at line 55 of file resources.h.

                                   {
    UACPI_RESOURCE_CONVERT_OPCODE_END = 0,
 
    /*
     * AML -> native:
     * Take the mask at 'aml_offset' and convert to an array of uacpi_u8
     * at 'native_offset' with the value corresponding to the bit index.
     * The array size is written to the byte at offset 'arg2'.
     *
     * native -> AML:
     * Walk each element of the array at 'native_offset' and set the
     * corresponding bit in the mask at 'aml_offset' to 1. The array size is
     * read from the byte at offset 'arg2'.
     */
    UACPI_RESOURCE_CONVERT_OPCODE_PACKED_ARRAY_8,
    UACPI_RESOURCE_CONVERT_OPCODE_PACKED_ARRAY_16,
 
    /*
     * AML -> native:
     * Grab the bits at the byte at 'aml_offset' + 'bit_index', and copy its
     * value into the byte at 'native_offset'.
     *
     * native -> AML:
     * Grab first N bits at 'native_offset' and copy to 'aml_offset' starting
     * at the 'bit_index'.
     *
     * NOTE:
     * These must be contiguous in this order.
     */
    UACPI_RESOURCE_CONVERT_OPCODE_BIT_FIELD_1,
    UACPI_RESOURCE_CONVERT_OPCODE_BIT_FIELD_2,
    UACPI_RESOURCE_CONVERT_OPCODE_BIT_FIELD_3,
    UACPI_RESOURCE_CONVERT_OPCODE_BIT_FIELD_6 =
        UACPI_RESOURCE_CONVERT_OPCODE_BIT_FIELD_3 + 3,
 
    /*
     * AML -> native:
     * Copy N bytes at 'aml_offset' to 'native_offset'.
     *
     * native -> AML:
     * Copy N bytes at 'native_offset' to 'aml_offset'.
     *
     * 'imm' is added to the accumulator.
     *
     * NOTE: These are affected by the current value in the accumulator. If it's
     *       set to 0 at the time of evalution, this is executed once, N times
     *       otherwise. 0xFF is considered a special value, which resets the
     *       accumulator to 0 unconditionally.
     */
    UACPI_RESOURCE_CONVERT_OPCODE_FIELD_8,
    UACPI_RESOURCE_CONVERT_OPCODE_FIELD_16,
    UACPI_RESOURCE_CONVERT_OPCODE_FIELD_32,
    UACPI_RESOURCE_CONVERT_OPCODE_FIELD_64,
 
    /*
     * If the length of the current resource is less than 'arg0', then skip
     * 'imm' instructions.
     */
    UACPI_RESOURCE_CONVERT_OPCODE_SKIP_IF_AML_SIZE_LESS_THAN,
 
    /*
     * Skip 'imm' instructions if 'arg0' is not equal to the value in the
     * accumulator.
     */
    UACPI_RESOURCE_CONVERT_OPCODE_SKIP_IF_NOT_EQUALS,
 
    /*
     * AML -> native:
     * Set the byte at 'native_offset' to 'imm'.
     *
     * native -> AML:
     * Set the byte at 'aml_offset' to 'imm'.
     */
    UACPI_RESOURCE_CONVERT_OPCODE_SET_TO_IMM,
 
    /*
     * AML -> native:
     * Load the AML resoruce length into the accumulator as well as the field at
     * 'native_offset' of width N.
     *
     * native -> AML:
     * Load the resource length into the accumulator.
     */
    UACPI_RESOURCE_CONVERT_OPCODE_LOAD_AML_SIZE_32,
 
    /*
     * AML -> native:
     * Load the 8 bit field at 'aml_offset' into the accumulator and store at
     * 'native_offset'.
     *
     * native -> AML:
     * Load the 8 bit field at 'native_offset' into the accumulator and store
     * at 'aml_offset'.
     *
     * The accumulator is multiplied by 'imm' unless it's set to zero.
     */
    UACPI_RESOURCE_CONVERT_OPCODE_LOAD_8_STORE,
 
    /*
     * Load the N bit field at 'native_offset' into the accumulator
     */
    UACPI_RESOURCE_CONVERT_OPCODE_LOAD_8_NATIVE,
    UACPI_RESOURCE_CONVERT_OPCODE_LOAD_16_NATIVE,
 
    /*
     * Load 'imm' into the accumulator.
     */
    UACPI_RESOURCE_CONVERT_OPCODE_LOAD_IMM,
 
    /*
     * AML -> native:
     * Load the resource source at offset = aml size + accumulator into the
     * uacpi_resource_source struct at 'native_offset'. The string bytes are
     * written to the offset at resource size + accumulator. The presence is
     * detected by comparing the length of the resource to the offset,
     * 'arg2' optionally specifies the offset to the upper bound of the string.
     *
     * native -> AML:
     * Load the resource source from the uacpi_resource_source struct at
     * 'native_offset' to aml_size + accumulator. aml_size + accumulator is
     * optionally written to 'aml_offset' if it's specified.
     */
    UACPI_RESOURCE_CONVERT_OPCODE_RESOURCE_SOURCE,
    UACPI_RESOURCE_CONVERT_OPCODE_RESOURCE_SOURCE_NO_INDEX,
    UACPI_RESOURCE_CONVERT_OPCODE_RESOURCE_LABEL,
 
    /*
     * AML -> native:
     * Load the pin table with upper bound specified at 'aml_offset'.
     * The table length is calculated by subtracting the upper bound from
     * aml_size and is written into the accumulator.
     *
     * native -> AML:
     * Load the pin table length from 'native_offset' and multiply by 2, store
     * the result in the accumulator.
     */
    UACPI_RESOURCE_CONVERT_OPCODE_LOAD_PIN_TABLE_LENGTH,
 
    /*
     * AML -> native:
     * Store the accumulator divided by 2 at 'native_offset'.
     * The table is copied to the offset at resource size from offset at
     * aml_size with the pointer written to the offset at 'arg2'.
     *
     * native -> AML:
     * Read the pin table from resource size offset, write aml_size to
     * 'aml_offset'. Copy accumulator bytes to the offset at aml_size.
     */
    UACPI_RESOURCE_CONVERT_OPCODE_PIN_TABLE,
 
    /*
     * AML -> native:
     * Load vendor data with offset stored at 'aml_offset'. The length is
     * calculated as aml_size - aml_offset and is written to 'native_offset'.
     * The data is written to offset - aml_size with the pointer written back
     * to the offset at 'arg2'.
     *
     * native -> AML:
     * Read vendor data from the pointer at offset 'arg2' and size at
     * 'native_offset', the offset to write to is calculated as the difference
     * between the data pointer and the native resource end pointer.
     * offset + aml_size is written to 'aml_offset' and the data is copied
     * there as well.
     */
    UACPI_RESOURCE_CONVERT_OPCODE_VENDOR_DATA,
 
    /*
     * AML -> native:
     * Read the serial type from the byte at 'aml_offset' and write it to the
     * type field of the uacpi_resource_serial_bus_common structure. Convert
     * the serial type to native and set the resource type to it. Copy the
     * vendor data to the offset at native size, the length is calculated
     * as type_data_length - extra-type-specific-size, and is written to
     * vendor_data_length, as well as the accumulator. The data pointer is
     * written to vendor_data.
     *
     * native -> AML:
     * Set the serial type at 'aml_offset' to the value stored at
     * 'native_offset'. Load the vendor data to the offset at aml_size,
     * the length is read from 'vendor_data_length', and the data is copied from
     * 'vendor_data'.
     */
    UACPI_RESOURCE_CONVERT_OPCODE_SERIAL_TYPE_SPECIFIC,
 
    /*
     * Produces an error if encountered in the instruction stream.
     * Used to trap invalid/unexpected code flow.
     */
    UACPI_RESOURCE_CONVERT_OPCODE_UNREACHABLE,
};

Function Documentation

uacpi_find_aml_resource_end_tag()

uacpi_status uacpi_find_aml_resource_end_tag	(	uacpi_data_view	buffer,
		uacpi_size *	out_offset
	)

Definition at line 1526 of file resources.c.

{
    uacpi_u8 *end_tag_ptr = UACPI_NULL;
    uacpi_status ret;
 
    if (buffer.length == 0) {
        *out_offset = 0;
        return UACPI_STATUS_OK;
    }
 
    /*
     * This returning UACPI_STATUS_OK guarantees that end_tag_ptr is set to
     * a valid value because a missing end tag would produce a
     * UACPI_STATUS_NO_RESOURCE_END_TAG error.
     */
    ret = uacpi_for_each_aml_resource(buffer, find_end, &end_tag_ptr);
    if (uacpi_unlikely_error(ret))
        return ret;
 
    *out_offset = end_tag_ptr - buffer.bytes;
    return UACPI_STATUS_OK;
}

Referenced by handle_concatenate_res().

uacpi_for_each_aml_resource()

uacpi_status uacpi_for_each_aml_resource	(	uacpi_data_view	buffer,
		uacpi_aml_resource_iteration_callback	cb,
		void *	user
	)

Definition at line 1423 of file resources.c.

{
    uacpi_status ret;
    uacpi_iteration_decision decision;
    uacpi_u8 *data;
    uacpi_size bytes_left;
    uacpi_u16 resource_size;
    enum uacpi_aml_resource type;
    const struct uacpi_resource_spec *spec;
 
    bytes_left = buffer.length;
    data = buffer.bytes;
 
    while (bytes_left) {
        type = get_aml_resource_type(*data);
        if (uacpi_unlikely(type == UACPI_AML_RESOURCE_TYPE_INVALID))
            return UACPI_STATUS_AML_INVALID_RESOURCE;
 
        ret = get_aml_resource_size(data, bytes_left, &resource_size);
        if (uacpi_unlikely_error(ret))
            return ret;
 
        spec = &aml_resources[type];
        switch (spec->size_kind) {
        case UACPI_AML_RESOURCE_SIZE_KIND_FIXED:
            if (resource_size != spec->aml_size)
                return UACPI_STATUS_AML_INVALID_RESOURCE;
            break;
        case UACPI_AML_RESOURCE_SIZE_KIND_VARIABLE:
            if (resource_size < spec->aml_size)
                return UACPI_STATUS_AML_INVALID_RESOURCE;
            break;
        case UACPI_AML_RESOURCE_SIZE_KIND_FIXED_OR_ONE_LESS:
            if (resource_size != spec->aml_size &&
                resource_size != (spec->aml_size - 1))
                return UACPI_STATUS_AML_INVALID_RESOURCE;
            break;
        default:
            return UACPI_STATUS_INTERNAL_ERROR;
        }
 
        if (spec->type == UACPI_AML_RESOURCE_SERIAL_CONNECTION) {
            struct acpi_resource_serial *serial;
 
            serial = (struct acpi_resource_serial*)data;
 
            ret = validate_aml_serial_type(serial->type);
            if (uacpi_unlikely_error(ret))
                return ret;
        }
 
        decision = cb(user, data, resource_size, spec);
        switch (decision) {
        case UACPI_ITERATION_DECISION_BREAK:
            return UACPI_STATUS_OK;
        case UACPI_ITERATION_DECISION_CONTINUE: {
            uacpi_size total_size = resource_size;
 
            total_size += aml_resource_kind_to_header_size[spec->resource_kind];
            data += total_size;
            bytes_left -= total_size;
            break;
        }
        default:
            return UACPI_STATUS_INTERNAL_ERROR;
        }
 
        if (type == UACPI_AML_RESOURCE_END_TAG)
            return UACPI_STATUS_OK;
    }
 
    return UACPI_STATUS_NO_RESOURCE_END_TAG;
}

Referenced by uacpi_find_aml_resource_end_tag(), uacpi_get_resource_from_buffer(), and uacpi_native_resources_from_aml().

uacpi_native_resources_from_aml()

uacpi_status uacpi_native_resources_from_aml	(	uacpi_data_view	aml_buffer,
		uacpi_resources **	out_resources
	)

Definition at line 1978 of file resources.c.

{
    uacpi_status ret;
    struct resource_conversion_ctx ctx = { 0 };
    uacpi_resources *resources;
 
    ret = uacpi_for_each_aml_resource(
        aml_buffer, accumulate_native_buffer_size, &ctx
    );
    if (uacpi_unlikely_error(ret))
        return ret;
 
    if (uacpi_unlikely_error(ctx.st))
        return ctx.st;
 
    // Realistically any resource buffer bigger than this is probably a bug
    if (uacpi_unlikely(ctx.size > (5 * 1024u * 1024u))) {
        uacpi_error("bug: bogus native resource buffer size %zu\n", ctx.size);
        return UACPI_STATUS_INTERNAL_ERROR;
    }
 
    resources = uacpi_kernel_alloc_zeroed(ctx.size + sizeof(uacpi_resources));
    if (uacpi_unlikely(resources == UACPI_NULL))
        return UACPI_STATUS_OUT_OF_MEMORY;
    resources->length = ctx.size;
    resources->entries = UACPI_PTR_ADD(resources, sizeof(uacpi_resources));
 
    ctx = (struct resource_conversion_ctx) {
        .buf = resources->entries,
    };
 
    ret = uacpi_for_each_aml_resource(aml_buffer, do_aml_resource_to_native, &ctx);
    if (uacpi_unlikely_error(ret)) {
        uacpi_free_resources(resources);
        return ret;
    }
 
    *out_resources = resources;
    return ret;
}

Referenced by extract_native_resources_from_method().

uacpi_native_resources_to_aml()

uacpi_status uacpi_native_resources_to_aml	(	uacpi_resources *	resources,
		uacpi_object **	out_template
	)

Definition at line 2491 of file resources.c.

{
    uacpi_status ret;
    uacpi_object *obj;
    void *buffer;
    struct resource_conversion_ctx ctx = { 0 };
 
    ret = uacpi_for_each_resource(
        resources, accumulate_aml_buffer_size, &ctx
    );
    if (ret == UACPI_STATUS_NO_RESOURCE_END_TAG) {
        // An end tag is always included
        accumulate_aml_buffer_size(&ctx, INLINE_END_TAG);
        ret = UACPI_STATUS_OK;
    }
    if (uacpi_unlikely_error(ret))
        return ret;
    if (uacpi_unlikely_error(ctx.st))
        return ctx.st;
 
    // Same reasoning as native_resource_from_aml
    if (uacpi_unlikely(ctx.size > (5 * 1024u * 1024u))) {
        uacpi_error("bug: bogus target aml resource buffer size %zu\n",
                    ctx.size);
        return UACPI_STATUS_INTERNAL_ERROR;
    }
 
    buffer = uacpi_kernel_alloc_zeroed(ctx.size);
    if (uacpi_unlikely(buffer == UACPI_NULL))
        return UACPI_STATUS_OUT_OF_MEMORY;
 
    obj = uacpi_create_object(UACPI_OBJECT_BUFFER);
    if (uacpi_unlikely(obj == UACPI_NULL)) {
        uacpi_free(buffer, ctx.size);
        return UACPI_STATUS_OUT_OF_MEMORY;
    }
 
    obj->buffer->data = buffer;
    obj->buffer->size = ctx.size;
 
    ret = native_resources_to_aml(resources, buffer);
    if (uacpi_unlikely_error(ret))
        uacpi_object_unref(obj);
 
    if (ret == UACPI_STATUS_OK)
        *out_template = obj;
 
    return ret;
}

Referenced by uacpi_set_resources().