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 #[cfg(feature = "acpi")] 16 pub mod acpi; 17 #[cfg(target_arch = "aarch64")] 18 pub mod gic; 19 pub mod interrupt_controller; 20 #[cfg(target_arch = "x86_64")] 21 pub mod ioapic; 22 pub mod legacy; 23 24 #[cfg(feature = "acpi")] 25 pub use self::acpi::{AcpiGedDevice, AcpiPmTimerDevice, AcpiShutdownDevice}; 26 27 bitflags! { 28 pub struct AcpiNotificationFlags: u8 { 29 const NO_DEVICES_CHANGED = 0; 30 const CPU_DEVICES_CHANGED = 0b1; 31 const MEMORY_DEVICES_CHANGED = 0b10; 32 const PCI_DEVICES_CHANGED = 0b100; 33 const POWER_BUTTON_CHANGED = 0b1000; 34 } 35 } 36 37 #[allow(unused_macros)] 38 #[cfg(target_arch = "aarch64")] 39 macro_rules! generate_read_fn { 40 ($fn_name: ident, $data_type: ty, $byte_type: ty, $type_size: expr, $endian_type: ident) => { 41 #[allow(dead_code)] 42 pub fn $fn_name(input: &[$byte_type]) -> $data_type { 43 assert!($type_size == std::mem::size_of::<$data_type>()); 44 let mut array = [0u8; $type_size]; 45 for (byte, read) in array.iter_mut().zip(input.iter().cloned()) { 46 *byte = read as u8; 47 } 48 <$data_type>::$endian_type(array) 49 } 50 }; 51 } 52 53 #[allow(unused_macros)] 54 #[cfg(target_arch = "aarch64")] 55 macro_rules! generate_write_fn { 56 ($fn_name: ident, $data_type: ty, $byte_type: ty, $endian_type: ident) => { 57 #[allow(dead_code)] 58 pub fn $fn_name(buf: &mut [$byte_type], n: $data_type) { 59 for (byte, read) in buf 60 .iter_mut() 61 .zip(<$data_type>::$endian_type(n).iter().cloned()) 62 { 63 *byte = read as $byte_type; 64 } 65 } 66 }; 67 } 68 69 #[cfg(target_arch = "aarch64")] 70 generate_read_fn!(read_le_u16, u16, u8, 2, from_le_bytes); 71 #[cfg(target_arch = "aarch64")] 72 generate_read_fn!(read_le_u32, u32, u8, 4, from_le_bytes); 73 #[cfg(target_arch = "aarch64")] 74 generate_read_fn!(read_le_u64, u64, u8, 8, from_le_bytes); 75 #[cfg(target_arch = "aarch64")] 76 generate_read_fn!(read_le_i32, i32, i8, 4, from_le_bytes); 77 78 #[cfg(target_arch = "aarch64")] 79 generate_read_fn!(read_be_u16, u16, u8, 2, from_be_bytes); 80 #[cfg(target_arch = "aarch64")] 81 generate_read_fn!(read_be_u32, u32, u8, 4, from_be_bytes); 82 83 #[cfg(target_arch = "aarch64")] 84 generate_write_fn!(write_le_u16, u16, u8, to_le_bytes); 85 #[cfg(target_arch = "aarch64")] 86 generate_write_fn!(write_le_u32, u32, u8, to_le_bytes); 87 #[cfg(target_arch = "aarch64")] 88 generate_write_fn!(write_le_u64, u64, u8, to_le_bytes); 89 #[cfg(target_arch = "aarch64")] 90 generate_write_fn!(write_le_i32, i32, i8, to_le_bytes); 91 92 #[cfg(target_arch = "aarch64")] 93 generate_write_fn!(write_be_u16, u16, u8, to_be_bytes); 94 #[cfg(target_arch = "aarch64")] 95 generate_write_fn!(write_be_u32, u32, u8, to_be_bytes); 96