Function sunrise_libuser::mem::map_mmio

pub fn map_mmio<T>(physical_address: usize) -> Result<*mut T, KernelError>

Maps a Mmio struct in the virtual memory of this process.

This function preserves the offset relative to PAGE_SIZE.

Example

use sunrise_libutils::io::{Io, Mmio};
use sunrise_libuser::mem::map_mmio;
/// Found at physical address 0xabc00030
#[repr(packed)]
struct DeviceFoo {
    header: Mmio<u32>,
    version: Mmio<u32>,
    field_a: Mmio<u16>,
    field_b: Mmio<u16>,
}

let mapped_data: *mut DeviceFoo = map_mmio::<DeviceFoo>(0xabc00030).unwrap(); // = virtual address 0x7030
unsafe {
    assert_eq!((*mapped_data).version.read(), 0x010200);
}