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 #[cfg(feature = "pvmemcontrol")] 27 pub mod pvmemcontrol; 28 pub mod pvpanic; 29 pub mod tpm; 30 31 pub use self::acpi::{AcpiGedDevice, AcpiPmTimerDevice, AcpiShutdownDevice}; 32 pub use self::pvpanic::{PvPanicDevice, PVPANIC_DEVICE_MMIO_SIZE}; 33 34 bitflags! { 35 pub struct AcpiNotificationFlags: u8 { 36 const NO_DEVICES_CHANGED = 0; 37 const CPU_DEVICES_CHANGED = 0b1; 38 const MEMORY_DEVICES_CHANGED = 0b10; 39 const PCI_DEVICES_CHANGED = 0b100; 40 const POWER_BUTTON_CHANGED = 0b1000; 41 } 42 } 43 44 #[cfg(target_arch = "aarch64")] 45 macro_rules! generate_read_fn { 46 ($fn_name: ident, $data_type: ty, $byte_type: ty, $type_size: expr, $endian_type: ident) => { 47 pub fn $fn_name(input: &[$byte_type]) -> $data_type { 48 assert!($type_size == std::mem::size_of::<$data_type>()); 49 let mut array = [0u8; $type_size]; 50 for (byte, read) in array.iter_mut().zip(input.iter().cloned()) { 51 *byte = read as u8; 52 } 53 <$data_type>::$endian_type(array) 54 } 55 }; 56 } 57 58 #[cfg(target_arch = "aarch64")] 59 macro_rules! generate_write_fn { 60 ($fn_name: ident, $data_type: ty, $byte_type: ty, $endian_type: ident) => { 61 pub fn $fn_name(buf: &mut [$byte_type], n: $data_type) { 62 for (byte, read) in buf 63 .iter_mut() 64 .zip(<$data_type>::$endian_type(n).iter().cloned()) 65 { 66 *byte = read as $byte_type; 67 } 68 } 69 }; 70 } 71 72 #[cfg(target_arch = "aarch64")] 73 generate_read_fn!(read_le_u16, u16, u8, 2, from_le_bytes); 74 #[cfg(target_arch = "aarch64")] 75 generate_read_fn!(read_le_u32, u32, u8, 4, from_le_bytes); 76 #[cfg(target_arch = "aarch64")] 77 generate_read_fn!(read_le_u64, u64, u8, 8, from_le_bytes); 78 #[cfg(target_arch = "aarch64")] 79 generate_read_fn!(read_le_i32, i32, i8, 4, from_le_bytes); 80 81 #[cfg(target_arch = "aarch64")] 82 generate_read_fn!(read_be_u16, u16, u8, 2, from_be_bytes); 83 #[cfg(target_arch = "aarch64")] 84 generate_read_fn!(read_be_u32, u32, u8, 4, from_be_bytes); 85 86 #[cfg(target_arch = "aarch64")] 87 generate_write_fn!(write_le_u16, u16, u8, to_le_bytes); 88 #[cfg(target_arch = "aarch64")] 89 generate_write_fn!(write_le_u32, u32, u8, to_le_bytes); 90 #[cfg(target_arch = "aarch64")] 91 generate_write_fn!(write_le_u64, u64, u8, to_le_bytes); 92 #[cfg(target_arch = "aarch64")] 93 generate_write_fn!(write_le_i32, i32, i8, to_le_bytes); 94 95 #[cfg(target_arch = "aarch64")] 96 generate_write_fn!(write_be_u16, u16, u8, to_be_bytes); 97 #[cfg(target_arch = "aarch64")] 98 generate_write_fn!(write_be_u32, u32, u8, to_be_bytes); 99