Initial commit
This commit is contained in:
commit
8c29ffea06
9
.cargo/config.toml
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9
.cargo/config.toml
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@ -0,0 +1,9 @@
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|||||||
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[unstable]
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build-std-features = ["compiler-builtins-mem"]
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build-std = ["core", "compiler_builtins", "alloc"]
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[build]
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target = "x86_64-unknown-none.json"
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||||||
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||||||
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[install]
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||||||
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root = "../kernel/sysroot"
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||||||
1
.gitignore
vendored
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1
.gitignore
vendored
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@ -0,0 +1 @@
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|||||||
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target
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||||||
367
Cargo.lock
generated
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367
Cargo.lock
generated
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@ -0,0 +1,367 @@
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# This file is automatically @generated by Cargo.
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# It is not intended for manual editing.
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version = 3
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|
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|
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|
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|
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|
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|
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|
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|
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|
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|
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||||||
|
name = "x86_64"
|
||||||
|
version = "0.14.10"
|
||||||
|
source = "git+https://github.com/pjht/x86_64#5d941e68fa70779e07576d42a9f49bc89afdb9ed"
|
||||||
|
dependencies = [
|
||||||
|
"bit_field",
|
||||||
|
"bitflags",
|
||||||
|
"rustversion",
|
||||||
|
"volatile",
|
||||||
|
]
|
||||||
|
|
||||||
|
[[package]]
|
||||||
|
name = "xmas-elf"
|
||||||
|
version = "0.8.0"
|
||||||
|
source = "registry+https://github.com/rust-lang/crates.io-index"
|
||||||
|
checksum = "8d29b4d8e7beaceb4e77447ba941a7600d23d0319ab52da0461abea214832d5a"
|
||||||
|
dependencies = [
|
||||||
|
"zero",
|
||||||
|
]
|
||||||
|
|
||||||
|
[[package]]
|
||||||
|
name = "zero"
|
||||||
|
version = "0.1.2"
|
||||||
|
source = "registry+https://github.com/rust-lang/crates.io-index"
|
||||||
|
checksum = "5f1bc8a6b2005884962297587045002d8cfb8dcec9db332f4ca216ddc5de82c5"
|
||||||
23
Cargo.toml
Normal file
23
Cargo.toml
Normal file
@ -0,0 +1,23 @@
|
|||||||
|
[package]
|
||||||
|
name = "test_proc"
|
||||||
|
version = "0.1.0"
|
||||||
|
edition = "2021"
|
||||||
|
|
||||||
|
# See more keys and their definitions at https://doc.rust-lang.org/cargo/reference/manifest.html
|
||||||
|
|
||||||
|
[dependencies]
|
||||||
|
dev_driver_rpc = { version = "0.1.0", path = "../dev_driver_rpc" }
|
||||||
|
postcard = { version = "1.0.2", default-features = false, features = ["alloc"] }
|
||||||
|
serde = { version = "1.0.144", default-features = false, features = ["alloc", "derive"] }
|
||||||
|
std = { path = "../std" }
|
||||||
|
bitflags = "1.3.2"
|
||||||
|
spin = "0.9.4"
|
||||||
|
tap = "1.0.1"
|
||||||
|
x86_64 = { git = "https://github.com/pjht/x86_64", features = ["experimental"] }
|
||||||
|
file_rpc = { version = "0.1.0", path = "../file_rpc" }
|
||||||
|
|
||||||
|
[profile.dev]
|
||||||
|
panic = "abort"
|
||||||
|
|
||||||
|
[profile.release]
|
||||||
|
panic = "abort"
|
||||||
2
rust-toolchain.toml
Normal file
2
rust-toolchain.toml
Normal file
@ -0,0 +1,2 @@
|
|||||||
|
[toolchain]
|
||||||
|
channel = "nightly"
|
||||||
412
src/ata.rs
Normal file
412
src/ata.rs
Normal file
@ -0,0 +1,412 @@
|
|||||||
|
use std::cmp::Ordering;
|
||||||
|
|
||||||
|
use bitflags::bitflags;
|
||||||
|
use spin::{Lazy, Mutex};
|
||||||
|
use std::io::{self, Read, Seek};
|
||||||
|
use tap::Tap;
|
||||||
|
use x86_64::instructions::port::{
|
||||||
|
PortRead, PortSafe, PortSafeReadOnly, PortSafeWriteOnly, PortWrite,
|
||||||
|
};
|
||||||
|
|
||||||
|
bitflags! {
|
||||||
|
pub struct RawError: u8 {
|
||||||
|
const AMNF = 0b0000_0001;
|
||||||
|
const TKZNF = 0b0000_0010;
|
||||||
|
const ABRT = 0b0000_0100;
|
||||||
|
const MCR = 0b0000_1000;
|
||||||
|
const IDNF = 0b0001_0000;
|
||||||
|
const MC = 0b0010_0000;
|
||||||
|
const UNC = 0b0100_0000;
|
||||||
|
const BBK = 0b1000_0000;
|
||||||
|
}
|
||||||
|
}
|
||||||
|
|
||||||
|
impl From<RawError> for Error {
|
||||||
|
fn from(err: RawError) -> Self {
|
||||||
|
if err.contains(RawError::AMNF) {
|
||||||
|
Self::AddressMarkNotFound
|
||||||
|
} else if err.contains(RawError::TKZNF) {
|
||||||
|
Self::TrackZeroNotFound
|
||||||
|
} else if err.contains(RawError::ABRT) {
|
||||||
|
Self::AbortedCommand
|
||||||
|
} else if err.contains(RawError::MCR) {
|
||||||
|
Self::MediaChangeRequest
|
||||||
|
} else if err.contains(RawError::IDNF) {
|
||||||
|
Self::IDMarkNotFound
|
||||||
|
} else if err.contains(RawError::MC) {
|
||||||
|
Self::MediaChanged
|
||||||
|
} else if err.contains(RawError::UNC) {
|
||||||
|
Self::UncorrectableData
|
||||||
|
} else if err.contains(RawError::BBK) {
|
||||||
|
Self::BadBlock
|
||||||
|
} else {
|
||||||
|
Self::Generic
|
||||||
|
}
|
||||||
|
}
|
||||||
|
}
|
||||||
|
|
||||||
|
impl PortRead for RawError {
|
||||||
|
unsafe fn read_from_port(port: u16) -> Self {
|
||||||
|
unsafe { Self::from_bits_unchecked(u8::read_from_port(port)) }
|
||||||
|
}
|
||||||
|
}
|
||||||
|
|
||||||
|
impl PortWrite for RawError {
|
||||||
|
unsafe fn write_to_port(port: u16, value: Self) {
|
||||||
|
unsafe { u8::write_to_port(port, value.bits) };
|
||||||
|
}
|
||||||
|
}
|
||||||
|
|
||||||
|
bitflags! {
|
||||||
|
pub struct Status: u8 {
|
||||||
|
const ERR = 0b0000_0001;
|
||||||
|
const DRQ = 0b0000_1000;
|
||||||
|
const SRV = 0b0001_0000;
|
||||||
|
const DF = 0b0010_0000;
|
||||||
|
const RDY = 0b0100_0000;
|
||||||
|
const BSY = 0b1000_0000;
|
||||||
|
}
|
||||||
|
}
|
||||||
|
|
||||||
|
impl PortRead for Status {
|
||||||
|
unsafe fn read_from_port(port: u16) -> Self {
|
||||||
|
unsafe { Self::from_bits_unchecked(u8::read_from_port(port)) }
|
||||||
|
}
|
||||||
|
}
|
||||||
|
|
||||||
|
impl PortWrite for Status {
|
||||||
|
unsafe fn write_to_port(port: u16, value: Self) {
|
||||||
|
unsafe { u8::write_to_port(port, value.bits) };
|
||||||
|
}
|
||||||
|
}
|
||||||
|
|
||||||
|
bitflags! {
|
||||||
|
pub struct DeviceControl: u8 {
|
||||||
|
const N_IEN = 0b0000_0010;
|
||||||
|
const SRST = 0b0000_0100;
|
||||||
|
const HOB = 0b1000_0000;
|
||||||
|
}
|
||||||
|
}
|
||||||
|
|
||||||
|
impl PortRead for DeviceControl {
|
||||||
|
unsafe fn read_from_port(port: u16) -> Self {
|
||||||
|
unsafe { Self::from_bits_unchecked(u8::read_from_port(port)) }
|
||||||
|
}
|
||||||
|
}
|
||||||
|
|
||||||
|
impl PortWrite for DeviceControl {
|
||||||
|
unsafe fn write_to_port(port: u16, value: Self) {
|
||||||
|
unsafe { u8::write_to_port(port, value.bits) };
|
||||||
|
}
|
||||||
|
}
|
||||||
|
|
||||||
|
bitflags! {
|
||||||
|
#[repr(transparent)]
|
||||||
|
pub struct DriveHead: u8 {
|
||||||
|
const DT0 = 0b0000_0001;
|
||||||
|
const DT1 = 0b0000_0010;
|
||||||
|
const DT2 = 0b0000_0100;
|
||||||
|
const DT3 = 0b0000_1000;
|
||||||
|
const DRV = 0b0001_0000;
|
||||||
|
const LBA = 0b0100_0000;
|
||||||
|
}
|
||||||
|
}
|
||||||
|
|
||||||
|
impl DriveHead {
|
||||||
|
fn set_head_block(&mut self, data: u8) {
|
||||||
|
assert!(data < 16);
|
||||||
|
self.bits = (self.bits & 0xF0) | data;
|
||||||
|
}
|
||||||
|
}
|
||||||
|
|
||||||
|
impl PortRead for DriveHead {
|
||||||
|
unsafe fn read_from_port(port: u16) -> Self {
|
||||||
|
unsafe { Self::from_bits_unchecked(u8::read_from_port(port)) }
|
||||||
|
}
|
||||||
|
}
|
||||||
|
|
||||||
|
impl PortWrite for DriveHead {
|
||||||
|
unsafe fn write_to_port(port: u16, value: Self) {
|
||||||
|
unsafe { u8::write_to_port(port, value.bits) };
|
||||||
|
}
|
||||||
|
}
|
||||||
|
|
||||||
|
#[repr(u8)]
|
||||||
|
#[derive(Copy, Clone, Debug, PartialEq, Eq)]
|
||||||
|
pub enum DriveNumber {
|
||||||
|
Master = 0,
|
||||||
|
Slave = 1,
|
||||||
|
}
|
||||||
|
|
||||||
|
#[repr(u8)]
|
||||||
|
#[derive(Copy, Clone, Debug, PartialEq)]
|
||||||
|
#[allow(unused)]
|
||||||
|
enum Command {
|
||||||
|
Identify = 0xEC,
|
||||||
|
IdentifyPacket = 0xA1,
|
||||||
|
ReadSectors = 0x20,
|
||||||
|
WriteSectors = 0x30,
|
||||||
|
}
|
||||||
|
|
||||||
|
#[derive(Copy, Clone, Debug, PartialEq, Eq)]
|
||||||
|
pub enum Error {
|
||||||
|
NonexistentDrive,
|
||||||
|
Generic,
|
||||||
|
AbortedCommand,
|
||||||
|
TrackZeroNotFound,
|
||||||
|
AddressMarkNotFound,
|
||||||
|
MediaChangeRequest,
|
||||||
|
IDMarkNotFound,
|
||||||
|
MediaChanged,
|
||||||
|
UncorrectableData,
|
||||||
|
BadBlock,
|
||||||
|
}
|
||||||
|
|
||||||
|
impl From<Error> for io::Error {
|
||||||
|
fn from(_: Error) -> Self {
|
||||||
|
Self::new(io::ErrorKind::Other, "ATA read error")
|
||||||
|
}
|
||||||
|
}
|
||||||
|
|
||||||
|
#[derive(Copy, Clone, Debug, PartialEq, Eq)]
|
||||||
|
#[allow(clippy::upper_case_acronyms)]
|
||||||
|
pub enum DriveKind {
|
||||||
|
ATA,
|
||||||
|
ATAPI,
|
||||||
|
}
|
||||||
|
|
||||||
|
#[derive(Copy, Clone, Debug, PartialEq, Eq)]
|
||||||
|
pub enum IdentifyError {
|
||||||
|
SATADrive,
|
||||||
|
Error(Error),
|
||||||
|
}
|
||||||
|
|
||||||
|
impl From<Error> for IdentifyError {
|
||||||
|
fn from(err: Error) -> Self {
|
||||||
|
Self::Error(err)
|
||||||
|
}
|
||||||
|
}
|
||||||
|
|
||||||
|
#[derive(Clone, Debug, PartialEq, Eq)]
|
||||||
|
pub struct Bus {
|
||||||
|
data: PortSafe<u16>,
|
||||||
|
error: PortSafeReadOnly<RawError>,
|
||||||
|
sector_count: PortSafe<u8>,
|
||||||
|
sector_num_lba_lo: PortSafe<u8>,
|
||||||
|
cyl_low_lba_mid: PortSafe<u8>,
|
||||||
|
cyl_high_lba_hi: PortSafe<u8>,
|
||||||
|
drive_head: PortSafe<DriveHead>,
|
||||||
|
status: PortSafeReadOnly<Status>,
|
||||||
|
command: PortSafeWriteOnly<u8>,
|
||||||
|
selected_drive: Option<DriveNumber>, // None represents the initial state with an unknown drive selected
|
||||||
|
}
|
||||||
|
|
||||||
|
impl Bus {
|
||||||
|
/// SAFETY
|
||||||
|
/// io_base must be a valid base for the ATA bus's IO registers
|
||||||
|
const unsafe fn new(io_base: u16) -> Self {
|
||||||
|
unsafe {
|
||||||
|
Self {
|
||||||
|
data: PortSafe::new(io_base),
|
||||||
|
error: PortSafeReadOnly::new(io_base + 1),
|
||||||
|
sector_count: PortSafe::new(io_base + 2),
|
||||||
|
sector_num_lba_lo: PortSafe::new(io_base + 3),
|
||||||
|
cyl_low_lba_mid: PortSafe::new(io_base + 4),
|
||||||
|
cyl_high_lba_hi: PortSafe::new(io_base + 5),
|
||||||
|
drive_head: PortSafe::new(io_base + 6),
|
||||||
|
status: PortSafeReadOnly::new(io_base + 7),
|
||||||
|
command: PortSafeWriteOnly::new(io_base + 7),
|
||||||
|
selected_drive: None,
|
||||||
|
}
|
||||||
|
}
|
||||||
|
}
|
||||||
|
|
||||||
|
pub fn select(&mut self, drive: DriveNumber, lba: bool, data: u8) {
|
||||||
|
if self.selected_drive != Some(drive) {
|
||||||
|
self.drive_head.write(DriveHead::empty().tap_mut(|v| {
|
||||||
|
v.set(DriveHead::DRV, drive == DriveNumber::Slave);
|
||||||
|
v.set(DriveHead::LBA, lba);
|
||||||
|
v.set_head_block(data);
|
||||||
|
}));
|
||||||
|
for _ in 0..14 {
|
||||||
|
self.status.read();
|
||||||
|
}
|
||||||
|
self.selected_drive = Some(drive);
|
||||||
|
}
|
||||||
|
}
|
||||||
|
|
||||||
|
pub fn read_data(&mut self) -> Result<[u16; 256], Error> {
|
||||||
|
self.poll()?;
|
||||||
|
let mut arr = [0; 256];
|
||||||
|
arr.fill_with(|| self.data.read());
|
||||||
|
Ok(arr)
|
||||||
|
}
|
||||||
|
|
||||||
|
fn poll(&mut self) -> Result<(), Error> {
|
||||||
|
while self.status.read().contains(Status::BSY) {}
|
||||||
|
while !(self.status.read().intersects(Status::DRQ | Status::ERR)) {}
|
||||||
|
self.error()
|
||||||
|
}
|
||||||
|
|
||||||
|
fn send_command(&mut self, command: Command) {
|
||||||
|
self.command.write(command as u8);
|
||||||
|
}
|
||||||
|
|
||||||
|
pub fn identify(&mut self) -> Result<(DriveKind, [u16; 256]), IdentifyError> {
|
||||||
|
self.command.write(Command::Identify as u8);
|
||||||
|
if self.status.read().bits() == 0 {
|
||||||
|
return Err(IdentifyError::Error(Error::NonexistentDrive));
|
||||||
|
};
|
||||||
|
self.poll()?;
|
||||||
|
if self.status.read().contains(Status::ERR) {
|
||||||
|
if self.cyl_low_lba_mid.read() == 0x14 && self.cyl_high_lba_hi.read() == 0xEB {
|
||||||
|
self.command.write(Command::IdentifyPacket as u8);
|
||||||
|
if self.status.read().bits() == 0 {
|
||||||
|
return Err(IdentifyError::Error(Error::NonexistentDrive));
|
||||||
|
};
|
||||||
|
Ok((DriveKind::ATAPI, self.read_data()?))
|
||||||
|
} else {
|
||||||
|
Err(IdentifyError::SATADrive)
|
||||||
|
}
|
||||||
|
} else {
|
||||||
|
Ok((DriveKind::ATA, self.read_data()?))
|
||||||
|
}
|
||||||
|
}
|
||||||
|
|
||||||
|
fn error(&mut self) -> Result<(), Error> {
|
||||||
|
if self.status.read().contains(Status::ERR) {
|
||||||
|
panic!("Drive Error: {:?}", Error::from(self.error.read()));
|
||||||
|
Err(self.error.read().into())
|
||||||
|
} else {
|
||||||
|
Ok(())
|
||||||
|
}
|
||||||
|
}
|
||||||
|
}
|
||||||
|
|
||||||
|
#[allow(unused)]
|
||||||
|
// SAFETY
|
||||||
|
// This is safe because 0x1F0 is the standard primary bus base address
|
||||||
|
static PRIMARY_BUS: Mutex<Bus> = Mutex::new(unsafe { Bus::new(0x1F0) });
|
||||||
|
#[allow(unused)]
|
||||||
|
// SAFETY
|
||||||
|
// This is safe because 0x170 is the standard secondary bus base address
|
||||||
|
static SECONDARY_BUS: Mutex<Bus> = Mutex::new(unsafe { Bus::new(0x170) });
|
||||||
|
|
||||||
|
#[allow(unused)]
|
||||||
|
pub static PRIMARY_MASTER: Lazy<Result<Device, NewDeviceError>> =
|
||||||
|
Lazy::new(|| Device::new(&PRIMARY_BUS, DriveNumber::Master));
|
||||||
|
#[allow(unused)]
|
||||||
|
pub static PRIMARY_SLAVE: Lazy<Result<Device, NewDeviceError>> =
|
||||||
|
Lazy::new(|| Device::new(&PRIMARY_BUS, DriveNumber::Slave));
|
||||||
|
#[allow(unused)]
|
||||||
|
pub static SECONDARY_MASTER: Lazy<Result<Device, NewDeviceError>> =
|
||||||
|
Lazy::new(|| Device::new(&SECONDARY_BUS, DriveNumber::Master));
|
||||||
|
#[allow(unused)]
|
||||||
|
pub static SECONDARY_SLAVE: Lazy<Result<Device, NewDeviceError>> =
|
||||||
|
Lazy::new(|| Device::new(&SECONDARY_BUS, DriveNumber::Slave));
|
||||||
|
|
||||||
|
#[derive(Copy, Clone, Debug)]
|
||||||
|
pub struct Device {
|
||||||
|
bus: &'static Mutex<Bus>,
|
||||||
|
drive_number: DriveNumber,
|
||||||
|
lba: bool,
|
||||||
|
pos: u64,
|
||||||
|
len: u64,
|
||||||
|
}
|
||||||
|
|
||||||
|
#[derive(Copy, Clone, Debug, PartialEq, Eq)]
|
||||||
|
pub enum NewDeviceError {
|
||||||
|
IdentifyError(IdentifyError),
|
||||||
|
ATAPIDevice,
|
||||||
|
}
|
||||||
|
|
||||||
|
impl Device {
|
||||||
|
fn new(bus: &'static Mutex<Bus>, drive_number: DriveNumber) -> Result<Self, NewDeviceError> {
|
||||||
|
bus.lock().select(drive_number, true, 0);
|
||||||
|
let id_result = bus
|
||||||
|
.lock()
|
||||||
|
.identify()
|
||||||
|
.map_err(NewDeviceError::IdentifyError)?;
|
||||||
|
if let (DriveKind::ATA, ident_data) = id_result {
|
||||||
|
Ok(Self {
|
||||||
|
bus,
|
||||||
|
drive_number,
|
||||||
|
lba: true,
|
||||||
|
pos: 0,
|
||||||
|
len: (u64::from(ident_data[60]) * 512),
|
||||||
|
})
|
||||||
|
} else {
|
||||||
|
Err(NewDeviceError::ATAPIDevice)
|
||||||
|
}
|
||||||
|
}
|
||||||
|
|
||||||
|
fn select(&self, data: u8) {
|
||||||
|
self.bus.lock().select(self.drive_number, self.lba, data);
|
||||||
|
}
|
||||||
|
}
|
||||||
|
|
||||||
|
impl Read for Device {
|
||||||
|
#[allow(clippy::similar_names)]
|
||||||
|
fn read(&mut self, buf: &mut [u8]) -> io::Result<usize> {
|
||||||
|
let avail_len = u64::min(u64::min(self.len - self.pos, buf.len() as u64), 512 * 250);
|
||||||
|
if avail_len == 0 {
|
||||||
|
return Ok(0);
|
||||||
|
}
|
||||||
|
let sector = self.pos / 512;
|
||||||
|
assert!(sector < 0x1_0000_0000_0000);
|
||||||
|
let offset = (self.pos % 512) as usize;
|
||||||
|
let length = avail_len as usize + offset;
|
||||||
|
let num_sectors = length.div_ceil(512);
|
||||||
|
assert!(num_sectors < 256);
|
||||||
|
if sector < 0x1000_0000 {
|
||||||
|
self.select(((sector & 0xF00_0000) >> 24) as u8);
|
||||||
|
let mut bus = self.bus.lock();
|
||||||
|
bus.sector_count.write(num_sectors as u8);
|
||||||
|
bus.sector_num_lba_lo.write(sector as u8);
|
||||||
|
bus.cyl_low_lba_mid.write((sector >> 8) as u8);
|
||||||
|
bus.cyl_high_lba_hi.write((sector >> 16) as u8);
|
||||||
|
bus.send_command(Command::ReadSectors);
|
||||||
|
} else {
|
||||||
|
unimplemented!();
|
||||||
|
}
|
||||||
|
let mut byte_num = 0;
|
||||||
|
let mut i = 0;
|
||||||
|
for _ in 0..num_sectors {
|
||||||
|
for byte in self
|
||||||
|
.bus
|
||||||
|
.lock()
|
||||||
|
.read_data()?
|
||||||
|
.into_iter()
|
||||||
|
.flat_map(u16::to_le_bytes)
|
||||||
|
{
|
||||||
|
if byte_num >= offset && byte_num < (offset + buf.len()) {
|
||||||
|
buf[i] = byte;
|
||||||
|
i += 1;
|
||||||
|
}
|
||||||
|
byte_num += 1;
|
||||||
|
}
|
||||||
|
}
|
||||||
|
self.pos += avail_len as u64;
|
||||||
|
Ok(avail_len as usize)
|
||||||
|
}
|
||||||
|
}
|
||||||
|
|
||||||
|
impl Seek for Device {
|
||||||
|
fn seek(&mut self, pos: io::SeekFrom) -> io::Result<u64> {
|
||||||
|
match pos {
|
||||||
|
io::SeekFrom::Start(x) => self.pos = x,
|
||||||
|
io::SeekFrom::End(_) => {
|
||||||
|
return Err(io::Error::new(
|
||||||
|
io::ErrorKind::Other,
|
||||||
|
"End seek not implemented yet",
|
||||||
|
))
|
||||||
|
}
|
||||||
|
io::SeekFrom::Current(x) => match x.cmp(&0) {
|
||||||
|
Ordering::Equal => (),
|
||||||
|
Ordering::Greater => self.pos += x.unsigned_abs(),
|
||||||
|
Ordering::Less => self.pos -= x.unsigned_abs(),
|
||||||
|
},
|
||||||
|
};
|
||||||
|
Ok(self.pos)
|
||||||
|
}
|
||||||
|
}
|
||||||
91
src/main.rs
Normal file
91
src/main.rs
Normal file
@ -0,0 +1,91 @@
|
|||||||
|
#![no_std]
|
||||||
|
#![no_main]
|
||||||
|
#![feature(int_roundings)]
|
||||||
|
#![deny(unsafe_op_in_unsafe_fn)]
|
||||||
|
|
||||||
|
mod ata;
|
||||||
|
|
||||||
|
use ata::{
|
||||||
|
Device, NewDeviceError, PRIMARY_MASTER, PRIMARY_SLAVE, SECONDARY_MASTER, SECONDARY_SLAVE,
|
||||||
|
};
|
||||||
|
use dev_driver_rpc::Server as DevServer;
|
||||||
|
use file_rpc::Server as FileServer;
|
||||||
|
use std::{
|
||||||
|
io::{self, Read, Seek, SeekFrom},
|
||||||
|
ipc,
|
||||||
|
prelude::*,
|
||||||
|
};
|
||||||
|
|
||||||
|
struct Serv;
|
||||||
|
|
||||||
|
fn get_drive_from_number(num: u64) -> Result<Device, NewDeviceError> {
|
||||||
|
match num {
|
||||||
|
0 => *PRIMARY_MASTER,
|
||||||
|
1 => *PRIMARY_SLAVE,
|
||||||
|
2 => *SECONDARY_MASTER,
|
||||||
|
3 => *SECONDARY_SLAVE,
|
||||||
|
_ => panic!(),
|
||||||
|
}
|
||||||
|
}
|
||||||
|
|
||||||
|
impl DevServer for Serv {
|
||||||
|
fn open(&self, path: &str) -> Result<u64, io::Error> {
|
||||||
|
match path {
|
||||||
|
"sda" => {
|
||||||
|
if PRIMARY_MASTER.is_ok() {
|
||||||
|
Ok(0)
|
||||||
|
} else {
|
||||||
|
Err(io::ErrorKind::NotFound.into())
|
||||||
|
}
|
||||||
|
}
|
||||||
|
"sdb" => {
|
||||||
|
if PRIMARY_SLAVE.is_ok() {
|
||||||
|
Ok(1)
|
||||||
|
} else {
|
||||||
|
Err(io::ErrorKind::NotFound.into())
|
||||||
|
}
|
||||||
|
}
|
||||||
|
"sdc" => {
|
||||||
|
if SECONDARY_MASTER.is_ok() {
|
||||||
|
Ok(2)
|
||||||
|
} else {
|
||||||
|
Err(io::ErrorKind::NotFound.into())
|
||||||
|
}
|
||||||
|
}
|
||||||
|
"sdd" => {
|
||||||
|
if SECONDARY_SLAVE.is_ok() {
|
||||||
|
Ok(3)
|
||||||
|
} else {
|
||||||
|
Err(io::ErrorKind::NotFound.into())
|
||||||
|
}
|
||||||
|
}
|
||||||
|
_ => Err(io::ErrorKind::NotFound.into()),
|
||||||
|
}
|
||||||
|
}
|
||||||
|
}
|
||||||
|
impl FileServer for Serv {
|
||||||
|
fn read(&self, fd: u64, pos: u64, len: usize) -> Result<Vec<u8>, io::Error> {
|
||||||
|
let mut buf = Vec::new();
|
||||||
|
buf.resize(len, 0);
|
||||||
|
let mut drive = get_drive_from_number(fd).unwrap();
|
||||||
|
// dbg!(pos, len);
|
||||||
|
drive.seek(SeekFrom::Start(pos))?;
|
||||||
|
drive.read(&mut buf)?;
|
||||||
|
// dbg!(&buf[0..usize::min(len, 16)]);
|
||||||
|
Ok(buf)
|
||||||
|
}
|
||||||
|
|
||||||
|
fn write(&self, _fd: u64, _pos: u64, _data: &[u8]) -> Result<(), io::Error> {
|
||||||
|
todo!()
|
||||||
|
}
|
||||||
|
|
||||||
|
fn close(&self, _fd: u64) {}
|
||||||
|
}
|
||||||
|
|
||||||
|
main!({
|
||||||
|
dev_driver_rpc::register_server(Box::new(Serv));
|
||||||
|
file_rpc::register_server(Box::new(Serv));
|
||||||
|
loop {
|
||||||
|
ipc::process_messages()
|
||||||
|
}
|
||||||
|
});
|
||||||
15
x86_64-unknown-none.json
Normal file
15
x86_64-unknown-none.json
Normal file
@ -0,0 +1,15 @@
|
|||||||
|
{
|
||||||
|
"llvm-target": "x86_64-unknown-none",
|
||||||
|
"data-layout": "e-m:e-i64:64-f80:128-n8:16:32:64-S128",
|
||||||
|
"arch": "x86_64",
|
||||||
|
"target-endian": "little",
|
||||||
|
"target-pointer-width": "64",
|
||||||
|
"target-c-int-width": "32",
|
||||||
|
"os": "none",
|
||||||
|
"executables": true,
|
||||||
|
"linker-flavor": "ld.lld",
|
||||||
|
"linker": "rust-lld",
|
||||||
|
"panic-strategy": "abort",
|
||||||
|
"disable-redzone": true,
|
||||||
|
"features": "-mmx,-sse,+soft-float"
|
||||||
|
}
|
||||||
Loading…
Reference in New Issue
Block a user