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#[cfg(any(target_arch = "x86_64", target_arch = "riscv64"))]
pub mod pci;

pub fn phys_to_virt(paddr: PhysAddr) -> VirtAddr {
    unsafe { drivers_phys_to_virt(paddr) }
}

pub fn virt_to_phys(vaddr: VirtAddr) -> PhysAddr {
    unsafe { drivers_virt_to_phys(vaddr) }
}

#[allow(unused)]
extern "C" {
    fn drivers_dma_alloc(pages: usize) -> PhysAddr;
    fn drivers_dma_dealloc(paddr: PhysAddr, pages: usize) -> i32;
    fn drivers_phys_to_virt(paddr: PhysAddr) -> VirtAddr;
    fn drivers_virt_to_phys(vaddr: VirtAddr) -> PhysAddr;
}

pub const PAGE_SIZE: usize = 4096;

type VirtAddr = usize;
type PhysAddr = usize;

use core::ptr::{read_volatile, write_volatile};
#[inline(always)]
pub fn write<T>(addr: usize, content: T) {
    let cell = (addr) as *mut T;
    unsafe {
        write_volatile(cell, content);
    }
}
#[inline(always)]
pub fn read<T>(addr: usize) -> T {
    let cell = (addr) as *const T;
    unsafe { read_volatile(cell) }
}