1 // Copyright 2018 Amazon.com, Inc. or its affiliates. All Rights Reserved. 2 // SPDX-License-Identifier: Apache-2.0 3 // 4 // Portions Copyright 2017 The Chromium OS Authors. All rights reserved. 5 // Use of this source code is governed by a BSD-style license that can be 6 // found in the LICENSE-BSD-3-Clause file. 7 8 //! Emulates virtual and hardware devices. 9 10 #[macro_use] 11 extern crate bitflags; 12 #[macro_use] 13 extern crate log; 14 15 pub mod acpi; 16 #[cfg(target_arch = "aarch64")] 17 pub mod gic; 18 pub mod interrupt_controller; 19 #[cfg(target_arch = "x86_64")] 20 pub mod ioapic; 21 pub mod legacy; 22 23 pub use self::acpi::{AcpiGedDevice, AcpiPmTimerDevice, AcpiShutdownDevice}; 24 25 bitflags! { 26 pub struct AcpiNotificationFlags: u8 { 27 const NO_DEVICES_CHANGED = 0; 28 const CPU_DEVICES_CHANGED = 0b1; 29 const MEMORY_DEVICES_CHANGED = 0b10; 30 const PCI_DEVICES_CHANGED = 0b100; 31 const POWER_BUTTON_CHANGED = 0b1000; 32 } 33 } 34 35 #[allow(unused_macros)] 36 #[cfg(target_arch = "aarch64")] 37 macro_rules! generate_read_fn { 38 ($fn_name: ident, $data_type: ty, $byte_type: ty, $type_size: expr, $endian_type: ident) => { 39 #[allow(dead_code)] 40 pub fn $fn_name(input: &[$byte_type]) -> $data_type { 41 assert!($type_size == std::mem::size_of::<$data_type>()); 42 let mut array = [0u8; $type_size]; 43 for (byte, read) in array.iter_mut().zip(input.iter().cloned()) { 44 *byte = read as u8; 45 } 46 <$data_type>::$endian_type(array) 47 } 48 }; 49 } 50 51 #[allow(unused_macros)] 52 #[cfg(target_arch = "aarch64")] 53 macro_rules! generate_write_fn { 54 ($fn_name: ident, $data_type: ty, $byte_type: ty, $endian_type: ident) => { 55 #[allow(dead_code)] 56 pub fn $fn_name(buf: &mut [$byte_type], n: $data_type) { 57 for (byte, read) in buf 58 .iter_mut() 59 .zip(<$data_type>::$endian_type(n).iter().cloned()) 60 { 61 *byte = read as $byte_type; 62 } 63 } 64 }; 65 } 66 67 #[cfg(target_arch = "aarch64")] 68 generate_read_fn!(read_le_u16, u16, u8, 2, from_le_bytes); 69 #[cfg(target_arch = "aarch64")] 70 generate_read_fn!(read_le_u32, u32, u8, 4, from_le_bytes); 71 #[cfg(target_arch = "aarch64")] 72 generate_read_fn!(read_le_u64, u64, u8, 8, from_le_bytes); 73 #[cfg(target_arch = "aarch64")] 74 generate_read_fn!(read_le_i32, i32, i8, 4, from_le_bytes); 75 76 #[cfg(target_arch = "aarch64")] 77 generate_read_fn!(read_be_u16, u16, u8, 2, from_be_bytes); 78 #[cfg(target_arch = "aarch64")] 79 generate_read_fn!(read_be_u32, u32, u8, 4, from_be_bytes); 80 81 #[cfg(target_arch = "aarch64")] 82 generate_write_fn!(write_le_u16, u16, u8, to_le_bytes); 83 #[cfg(target_arch = "aarch64")] 84 generate_write_fn!(write_le_u32, u32, u8, to_le_bytes); 85 #[cfg(target_arch = "aarch64")] 86 generate_write_fn!(write_le_u64, u64, u8, to_le_bytes); 87 #[cfg(target_arch = "aarch64")] 88 generate_write_fn!(write_le_i32, i32, i8, to_le_bytes); 89 90 #[cfg(target_arch = "aarch64")] 91 generate_write_fn!(write_be_u16, u16, u8, to_be_bytes); 92 #[cfg(target_arch = "aarch64")] 93 generate_write_fn!(write_be_u32, u32, u8, to_be_bytes); 94