io.h

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#ifndef __LIBK_IO_H__
#define __LIBK_IO_H__
 
#include <type.h>
 
static inline void outb(uint16_t port, uint8_t value) {
    asm volatile("outb %0, %1" : : "a"(value), "Nd"(port));
}
 
// receives data from a IO port
static inline uint8_t inb(uint16_t port) {
    uint8_t ret;
    asm volatile("inb %1, %0" : "=a"(ret) : "Nd"(port));
 
    return ret;
}
 
static inline void outl(uint16_t port, uint32_t value) {
    asm volatile("outl %0, %1" : : "a"(value), "Nd"(port));
}
 
static inline uint32_t inl(uint16_t port) {
    uint32_t ret;
    asm volatile("inl %1, %0" : "=a"(ret) : "Nd"(port));
 
    return ret;
}
 
static inline uint16_t inw(uint16_t port) {
    uint16_t ret;
    asm volatile("inw %1, %0" : "=a"(ret) : "Nd"(port));
 
    return ret;
}
 
static inline void outw(uint16_t port, uint16_t value) {
    asm volatile("outw %0, %1" : : "a"(value), "Nd"(port));
}
 
static inline void mmio_outw(uint32_t addr, uint16_t value) {
    asm volatile("outw %0, %1" : : "a"(value), "Nd"(addr));
}
 
static inline uint16_t mmio_inw(uint32_t addr) {
    uint16_t ret;
    asm volatile("inw %1, %0" : "=a"(ret) : "Nd"(addr));
 
    return ret;
}
 
static inline void mmio_outl(uintptr_t addr, uint32_t value) {
    *((volatile uint32_t*) addr) = value;
}
 
static inline uint32_t mmio_inl(uintptr_t addr) {
    return *((volatile uint32_t*) addr);
}
 
static inline void mmio_outll(uintptr_t addr, uint64_t value) {
    *((volatile uint64_t*) addr) = value;
}
 
static inline uint64_t mmio_inll(uintptr_t addr) {
    return *((volatile uint64_t*) addr);
}
 
#endif