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 pub mod tpm; 23 24 pub use self::acpi::{AcpiGedDevice, AcpiPmTimerDevice, AcpiShutdownDevice}; 25 26 bitflags! { 27 pub struct AcpiNotificationFlags: u8 { 28 const NO_DEVICES_CHANGED = 0; 29 const CPU_DEVICES_CHANGED = 0b1; 30 const MEMORY_DEVICES_CHANGED = 0b10; 31 const PCI_DEVICES_CHANGED = 0b100; 32 const POWER_BUTTON_CHANGED = 0b1000; 33 } 34 } 35 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 pub fn $fn_name(input: &[$byte_type]) -> $data_type { 40 assert!($type_size == std::mem::size_of::<$data_type>()); 41 let mut array = [0u8; $type_size]; 42 for (byte, read) in array.iter_mut().zip(input.iter().cloned()) { 43 *byte = read as u8; 44 } 45 <$data_type>::$endian_type(array) 46 } 47 }; 48 } 49 50 #[cfg(target_arch = "aarch64")] 51 macro_rules! generate_write_fn { 52 ($fn_name: ident, $data_type: ty, $byte_type: ty, $endian_type: ident) => { 53 pub fn $fn_name(buf: &mut [$byte_type], n: $data_type) { 54 for (byte, read) in buf 55 .iter_mut() 56 .zip(<$data_type>::$endian_type(n).iter().cloned()) 57 { 58 *byte = read as $byte_type; 59 } 60 } 61 }; 62 } 63 64 #[cfg(target_arch = "aarch64")] 65 generate_read_fn!(read_le_u16, u16, u8, 2, from_le_bytes); 66 #[cfg(target_arch = "aarch64")] 67 generate_read_fn!(read_le_u32, u32, u8, 4, from_le_bytes); 68 #[cfg(target_arch = "aarch64")] 69 generate_read_fn!(read_le_u64, u64, u8, 8, from_le_bytes); 70 #[cfg(target_arch = "aarch64")] 71 generate_read_fn!(read_le_i32, i32, i8, 4, from_le_bytes); 72 73 #[cfg(target_arch = "aarch64")] 74 generate_read_fn!(read_be_u16, u16, u8, 2, from_be_bytes); 75 #[cfg(target_arch = "aarch64")] 76 generate_read_fn!(read_be_u32, u32, u8, 4, from_be_bytes); 77 78 #[cfg(target_arch = "aarch64")] 79 generate_write_fn!(write_le_u16, u16, u8, to_le_bytes); 80 #[cfg(target_arch = "aarch64")] 81 generate_write_fn!(write_le_u32, u32, u8, to_le_bytes); 82 #[cfg(target_arch = "aarch64")] 83 generate_write_fn!(write_le_u64, u64, u8, to_le_bytes); 84 #[cfg(target_arch = "aarch64")] 85 generate_write_fn!(write_le_i32, i32, i8, to_le_bytes); 86 87 #[cfg(target_arch = "aarch64")] 88 generate_write_fn!(write_be_u16, u16, u8, to_be_bytes); 89 #[cfg(target_arch = "aarch64")] 90 generate_write_fn!(write_be_u32, u32, u8, to_be_bytes); 91