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 event_monitor; 14 #[macro_use] 15 extern crate log; 16 17 pub mod acpi; 18 #[cfg(target_arch = "x86_64")] 19 pub mod debug_console; 20 #[cfg(target_arch = "aarch64")] 21 pub mod gic; 22 pub mod interrupt_controller; 23 #[cfg(target_arch = "x86_64")] 24 pub mod ioapic; 25 pub mod legacy; 26 pub mod pvpanic; 27 pub mod tpm; 28 29 pub use self::acpi::{AcpiGedDevice, AcpiPmTimerDevice, AcpiShutdownDevice}; 30 pub use self::pvpanic::{PvPanicDevice, PVPANIC_DEVICE_MMIO_SIZE}; 31 32 bitflags! { 33 pub struct AcpiNotificationFlags: u8 { 34 const NO_DEVICES_CHANGED = 0; 35 const CPU_DEVICES_CHANGED = 0b1; 36 const MEMORY_DEVICES_CHANGED = 0b10; 37 const PCI_DEVICES_CHANGED = 0b100; 38 const POWER_BUTTON_CHANGED = 0b1000; 39 } 40 } 41 42 #[cfg(target_arch = "aarch64")] 43 macro_rules! generate_read_fn { 44 ($fn_name: ident, $data_type: ty, $byte_type: ty, $type_size: expr, $endian_type: ident) => { 45 pub fn $fn_name(input: &[$byte_type]) -> $data_type { 46 assert!($type_size == std::mem::size_of::<$data_type>()); 47 let mut array = [0u8; $type_size]; 48 for (byte, read) in array.iter_mut().zip(input.iter().cloned()) { 49 *byte = read as u8; 50 } 51 <$data_type>::$endian_type(array) 52 } 53 }; 54 } 55 56 #[cfg(target_arch = "aarch64")] 57 macro_rules! generate_write_fn { 58 ($fn_name: ident, $data_type: ty, $byte_type: ty, $endian_type: ident) => { 59 pub fn $fn_name(buf: &mut [$byte_type], n: $data_type) { 60 for (byte, read) in buf 61 .iter_mut() 62 .zip(<$data_type>::$endian_type(n).iter().cloned()) 63 { 64 *byte = read as $byte_type; 65 } 66 } 67 }; 68 } 69 70 #[cfg(target_arch = "aarch64")] 71 generate_read_fn!(read_le_u16, u16, u8, 2, from_le_bytes); 72 #[cfg(target_arch = "aarch64")] 73 generate_read_fn!(read_le_u32, u32, u8, 4, from_le_bytes); 74 #[cfg(target_arch = "aarch64")] 75 generate_read_fn!(read_le_u64, u64, u8, 8, from_le_bytes); 76 #[cfg(target_arch = "aarch64")] 77 generate_read_fn!(read_le_i32, i32, i8, 4, from_le_bytes); 78 79 #[cfg(target_arch = "aarch64")] 80 generate_read_fn!(read_be_u16, u16, u8, 2, from_be_bytes); 81 #[cfg(target_arch = "aarch64")] 82 generate_read_fn!(read_be_u32, u32, u8, 4, from_be_bytes); 83 84 #[cfg(target_arch = "aarch64")] 85 generate_write_fn!(write_le_u16, u16, u8, to_le_bytes); 86 #[cfg(target_arch = "aarch64")] 87 generate_write_fn!(write_le_u32, u32, u8, to_le_bytes); 88 #[cfg(target_arch = "aarch64")] 89 generate_write_fn!(write_le_u64, u64, u8, to_le_bytes); 90 #[cfg(target_arch = "aarch64")] 91 generate_write_fn!(write_le_i32, i32, i8, to_le_bytes); 92 93 #[cfg(target_arch = "aarch64")] 94 generate_write_fn!(write_be_u16, u16, u8, to_be_bytes); 95 #[cfg(target_arch = "aarch64")] 96 generate_write_fn!(write_be_u32, u32, u8, to_be_bytes); 97