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// SPDX-License-Identifier: Apache-2.0 OR MIT
//
// Copyright (c) 2018-2022 by the author(s)
//
// Author(s):
// - KarimAllah Ahmed <karahmed@amazon.com>
// - Andre Richter <andre.o.richter@gmail.com>
use tock_registers::{
interfaces::{Readable, Writeable},
register_bitfields,
};
register_bitfields! {u64,
pub VTTBR_EL2 [
/// An VMID for the translation table
///
/// If the implementation only supports 8-bit VM IDs the top 8 bits are RES0
VMID OFFSET(48) NUMBITS(16) [],
/// Translation table base address
BADDR OFFSET(1) NUMBITS(48) [],
/// Common not Private
CnP OFFSET(0) NUMBITS(1) []
]
}
pub struct Reg;
impl Readable for Reg {
type T = u64;
type R = VTTBR_EL2::Register;
sys_coproc_read_raw!(u64, "VTTBR_EL2", "x");
}
impl Writeable for Reg {
type T = u64;
type R = VTTBR_EL2::Register;
sys_coproc_write_raw!(u64, "VTTBR_EL2", "x");
}
impl Reg {
#[inline(always)]
pub fn get_baddr(&self) -> u64 {
self.read(VTTBR_EL2::BADDR) << 1
}
#[inline(always)]
pub fn set_baddr(&self, addr: u64) {
self.write(VTTBR_EL2::BADDR.val(addr >> 1));
}
}
pub const VTTBR_EL2: Reg = Reg {};