Skip to content
charmOS docs

MMIO

include/drivers/mmio.h View source View on GitHub

Functions

Section titled “Functions”

mmio_map

Section titled “mmio_map”
void cc_mem_io * mmio_map(paddr_t phys, size_t size)
source

mmio_map is for device registers, and mmio_map_dma is for host memory that devices use as DMA (latter cacheable)

mmio_unmap

Section titled “mmio_unmap”
void mmio_unmap(void cc_mem_io *vaddr, size_t size)
source

mmio_map_dma

Section titled “mmio_map_dma”
void * mmio_map_dma(paddr_t phys, size_t size)
source

mmio_init

Section titled “mmio_init”
void mmio_init(void)
source

mmio_write_64

Section titled “mmio_write_64”
void mmio_write_64(volatile void cc_mem_io *address, uint64_t value)
source

mmio_write_32

Section titled “mmio_write_32”
void mmio_write_32(volatile void cc_mem_io *address, uint32_t value)
source

mmio_write_16

Section titled “mmio_write_16”
void mmio_write_16(volatile void cc_mem_io *address, uint16_t value)
source

mmio_write_8

Section titled “mmio_write_8”
void mmio_write_8(volatile void cc_mem_io *address, uint8_t value)
source

mmio_read_64

Section titled “mmio_read_64”
uint64_t mmio_read_64(volatile void cc_mem_io *address)
source

mmio_read_32

Section titled “mmio_read_32”
uint32_t mmio_read_32(volatile void cc_mem_io *address)
source

mmio_read_16

Section titled “mmio_read_16”
uint16_t mmio_read_16(volatile void cc_mem_io *address)
source

mmio_read_8

Section titled “mmio_read_8”
uint8_t mmio_read_8(volatile void cc_mem_io *address)
source

Macros

Section titled “Macros”

MMIO_RANGE_SIZE

Section titled “MMIO_RANGE_SIZE”
#define MMIO_RANGE_SIZE ((uintptr_t) PAGE_1GB * 64ULL)
source