Function sunrise_kernel::syscalls::map_mmio_region

pub fn map_mmio_region(
    physical_address: usize, 
    size: usize, 
    virtual_address: usize, 
    writable: bool
) -> Result<(), UserspaceError>

Maps a physical region in the address space of the process.

Returns

The virtual address where it was mapped.

Errors

• InvalidAddress:
  • virtual_address is already occupied.
  • virtual_address is not PAGE_SIZE aligned.
  • physical_address points to a physical region in DRAM (it's not MMIO).
• InvalidLength:
  • length is not PAGE_SIZE aligned.
  • length is zero.