io.h File Reference

#include <stdint.h>

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Macros
#define	IO_PORT_MAX   UINT16_MAX
	Maximum I/O port number.

Typedefs
typedef uint16_t	port_t
	I/O port type.

Functions
uint64_t	io_reserve (port_t *out, port_t minBase, port_t maxBase, uint64_t alignment, uint64_t length, const char *owner)
	Find and reserve a range of I/O ports if available.
void	io_release (port_t base, uint64_t length)
	Release a previously reserved range of I/O ports.
static void	io_out8 (port_t port, uint8_t val)
	Write an 8-bit value to an I/O port.
static uint8_t	io_in8 (port_t port)
	Read an 8-bit value from an I/O port.
static void	io_out16 (port_t port, uint16_t val)
	Write a 16-bit value to an I/O port.
static uint16_t	io_in16 (port_t port)
	Read a 16-bit value from an I/O port.
static uint32_t	io_in32 (port_t port)
	Write a 32-bit value to an I/O port.
static void	io_out32 (port_t port, uint32_t val)
	Read a 32-bit value from an I/O port.