io.h

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#pragma once
 
#include <uacpi/internal/types.h>
#include <uacpi/acpi.h>
#include <uacpi/io.h>
 
#ifndef UACPI_BAREBONES_MODE
 
typedef struct uacpi_mapped_gas {
    uacpi_handle mapping;
    uacpi_u8 access_bit_width;
    uacpi_u8 total_bit_width;
    uacpi_u8 bit_offset;
 
    uacpi_status (*read)(
        uacpi_handle, uacpi_size offset, uacpi_u8 width, uacpi_u64 *out
    );
    uacpi_status (*write)(
        uacpi_handle, uacpi_size offset, uacpi_u8 width, uacpi_u64 in
    );
 
    void (*unmap)(uacpi_handle, uacpi_size);
} uacpi_mapped_gas;
 
uacpi_status uacpi_map_gas_noalloc(
    const struct acpi_gas *gas, uacpi_mapped_gas *out_mapped
);
void uacpi_unmap_gas_nofree(uacpi_mapped_gas *gas);
 
uacpi_size uacpi_round_up_bits_to_bytes(uacpi_size bit_length);
 
void uacpi_read_buffer_field(
    const uacpi_buffer_field *field, void *dst
);
void uacpi_write_buffer_field(
    uacpi_buffer_field *field, const void *src, uacpi_size size
);
 
uacpi_status uacpi_field_unit_get_read_type(
    struct uacpi_field_unit *field, uacpi_object_type *out_type
);
 
uacpi_status uacpi_field_unit_get_bit_length(
    struct uacpi_field_unit *field, uacpi_size *out_length
);
 
uacpi_status uacpi_read_field_unit(
    uacpi_field_unit *field, void *dst, uacpi_size size,
    uacpi_data_view *wtr_response
);
uacpi_status uacpi_write_field_unit(
    uacpi_field_unit *field, const void *src, uacpi_size size,
    uacpi_data_view *wtr_response
);
 
/*
 * Writes the source one field-sized chunk at a time, every chunk being a
 * complete write of the field, the last one zero-extended. Nothing is written
 * if the source is empty. This is how NT stores a String or a Buffer to a
 * field. Fields that take a buffer, e.g. GenericSerialBus, get it in one go.
 */
uacpi_status uacpi_write_field_unit_in_chunks(
    uacpi_field_unit *field, const void *src, uacpi_size size,
    uacpi_data_view *wtr_response
);
 
#ifdef UACPI_NATIVE_MMIO
#define uacpi_mmio_read8 uacpi_kernel_mmio_read8
#define uacpi_mmio_read16 uacpi_kernel_mmio_read16
#define uacpi_mmio_read32 uacpi_kernel_mmio_read32
#define uacpi_mmio_read64 uacpi_kernel_mmio_read64
 
#define uacpi_mmio_write8 uacpi_kernel_mmio_write8
#define uacpi_mmio_write16 uacpi_kernel_mmio_write16
#define uacpi_mmio_write32 uacpi_kernel_mmio_write32
#define uacpi_mmio_write64 uacpi_kernel_mmio_write64
#else
uacpi_u8 uacpi_builtin_mmio_read8(void *ptr);
uacpi_u16 uacpi_builtin_mmio_read16(void *ptr);
uacpi_u32 uacpi_builtin_mmio_read32(void *ptr);
uacpi_u64 uacpi_builtin_mmio_read64(void *ptr);
 
void uacpi_builtin_mmio_write8(void *ptr, uacpi_u8 data);
void uacpi_builtin_mmio_write16(void *ptr, uacpi_u16 data);
void uacpi_builtin_mmio_write32(void *ptr, uacpi_u32 data);
void uacpi_builtin_mmio_write64(void *ptr, uacpi_u64 data);
 
#define uacpi_mmio_read8 uacpi_builtin_mmio_read8
#define uacpi_mmio_read16 uacpi_builtin_mmio_read16
#define uacpi_mmio_read32 uacpi_builtin_mmio_read32
#define uacpi_mmio_read64 uacpi_builtin_mmio_read64
 
#define uacpi_mmio_write8 uacpi_builtin_mmio_write8
#define uacpi_mmio_write16 uacpi_builtin_mmio_write16
#define uacpi_mmio_write32 uacpi_builtin_mmio_write32
#define uacpi_mmio_write64 uacpi_builtin_mmio_write64
#endif
 
uacpi_status uacpi_system_memory_read(
    void *ptr, uacpi_size offset, uacpi_u8 width, uacpi_u64 *out
);
uacpi_status uacpi_system_memory_write(
    void *ptr, uacpi_size offset, uacpi_u8 width, uacpi_u64 in
);
 
uacpi_status uacpi_system_io_read(
    uacpi_handle handle, uacpi_size offset, uacpi_u8 width, uacpi_u64 *out
);
uacpi_status uacpi_system_io_write(
    uacpi_handle handle, uacpi_size offset, uacpi_u8 width, uacpi_u64 in
);
 
uacpi_status uacpi_pci_read(
    uacpi_handle handle, uacpi_size offset, uacpi_u8 width, uacpi_u64 *out
);
uacpi_status uacpi_pci_write(
    uacpi_handle handle, uacpi_size offset, uacpi_u8 width, uacpi_u64 in
);
 
#endif // !UACPI_BAREBONES_MODE