This commit is contained in:
pjht 2024-06-06 22:03:58 -05:00
parent 12b51173e8
commit 7d07b40163
Signed by: pjht
GPG Key ID: 7B5F6AFBEC7EE78E
6 changed files with 258 additions and 283 deletions

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@ -1,5 +1,5 @@
[build]
target = "x86_64-unknown-none"
target = "x86_64-unknown-mikros"
[install]
root = "../kernel/sysroot"
root = "../os_build/sysroot"

346
Cargo.lock generated
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@ -2,28 +2,17 @@
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@ -88,19 +45,13 @@ dependencies = [
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@ -109,174 +60,143 @@ dependencies = [
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@ -293,75 +213,99 @@ checksum = "55937e1799185b12863d447f42597ed69d9928686b8d88a1df17376a097d8369"
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View File

@ -7,14 +7,14 @@ edition = "2021"
[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"
# spin = "0.9.4"
tap = "1.0.1"
x86_64 = { git = "https://github.com/pjht/x86_64", features = ["experimental"] }
# x86_64 = { git = "https://gitea.pterpstra.com/mikros/x86_64" }
file_rpc = { version = "0.1.0", path = "../file_rpc" }
parking_lot = "0.12.3"
once_cell = "1.19.0"
x86_64 = "0.15.1"
[profile.dev]
panic = "abort"

View File

@ -1,2 +1,2 @@
[toolchain]
channel = "nightly"
channel = "dev-x86_64-unknown-mikros"

View File

@ -1,11 +1,12 @@
use std::cmp::Ordering;
use bitflags::bitflags;
use spin::{Lazy, Mutex};
use parking_lot::Mutex;
use once_cell::sync::Lazy;
use std::io::{self, Read, Seek};
use tap::Tap;
use x86_64::instructions::port::{
PortRead, PortSafe, PortSafeReadOnly, PortSafeWriteOnly, PortWrite,
PortRead, Port, PortReadOnly, PortWriteOnly, PortWrite,
};
bitflags! {
@ -189,15 +190,15 @@ impl From<Error> for IdentifyError {
#[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>,
data: Port<u16>,
error: PortReadOnly<RawError>,
sector_count: Port<u8>,
sector_num_lba_lo: Port<u8>,
cyl_low_lba_mid: Port<u8>,
cyl_high_lba_hi: Port<u8>,
drive_head: Port<DriveHead>,
status: PortReadOnly<Status>,
command: PortWriteOnly<u8>,
selected_drive: Option<DriveNumber>, // None represents the initial state with an unknown drive selected
}
@ -205,23 +206,22 @@ 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),
data: Port::new(io_base),
error: PortReadOnly::new(io_base + 1),
sector_count: Port::new(io_base + 2),
sector_num_lba_lo: Port::new(io_base + 3),
cyl_low_lba_mid: Port::new(io_base + 4),
cyl_high_lba_hi: Port::new(io_base + 5),
drive_head: Port::new(io_base + 6),
status: PortReadOnly::new(io_base + 7),
command: PortWriteOnly::new(io_base + 7),
selected_drive: None,
}
}
}
pub fn select(&mut self, drive: DriveNumber, lba: bool, data: u8) {
unsafe {
if self.selected_drive != Some(drive) {
self.drive_head.write(DriveHead::empty().tap_mut(|v| {
v.set(DriveHead::DRV, drive == DriveNumber::Slave);
@ -234,25 +234,33 @@ impl Bus {
self.selected_drive = Some(drive);
}
}
}
pub fn read_data(&mut self) -> Result<[u16; 256], Error> {
unsafe {
self.poll()?;
let mut arr = [0; 256];
arr.fill_with(|| self.data.read());
Ok(arr)
}
}
fn poll(&mut self) -> Result<(), Error> {
unsafe {
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) {
unsafe {
self.command.write(command as u8);
}
}
pub fn identify(&mut self) -> Result<(DriveKind, [u16; 256]), IdentifyError> {
unsafe {
self.command.write(Command::Identify as u8);
if self.status.read().bits() == 0 {
return Err(IdentifyError::Error(Error::NonexistentDrive));
@ -269,11 +277,14 @@ impl Bus {
Err(IdentifyError::SATADrive)
}
} else {
dbg!();
Ok((DriveKind::ATA, self.read_data()?))
}
}
}
fn error(&mut self) -> Result<(), Error> {
unsafe {
if self.status.read().contains(Status::ERR) {
panic!("Drive Error: {:?}", Error::from(self.error.read()));
Err(self.error.read().into())
@ -281,6 +292,7 @@ impl Bus {
Ok(())
}
}
}
}
#[allow(unused)]
@ -322,20 +334,25 @@ pub enum NewDeviceError {
impl Device {
fn new(bus: &'static Mutex<Bus>, drive_number: DriveNumber) -> Result<Self, NewDeviceError> {
dbg!(bus, drive_number);
bus.lock().select(drive_number, true, 0);
dbg!();
let id_result = bus
.lock()
.identify()
.map_err(NewDeviceError::IdentifyError)?;
dbg!();
if let (DriveKind::ATA, ident_data) = id_result {
dbg!();
Ok(Self {
bus,
drive_number,
lba: true,
pos: 0,
len: (u64::from(ident_data[60]) * 512),
len: (((u64::from(ident_data[1]) << 16) | u64::from(ident_data[60])) * 512),
})
} else {
dbg!();
Err(NewDeviceError::ATAPIDevice)
}
}
@ -361,10 +378,12 @@ impl Read for Device {
if sector < 0x1000_0000 {
self.select(((sector & 0xF00_0000) >> 24) as u8);
let mut bus = self.bus.lock();
unsafe {
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!();

View File

@ -1,5 +1,3 @@
#![no_std]
#![no_main]
#![feature(int_roundings)]
#![deny(unsafe_op_in_unsafe_fn)]
@ -12,8 +10,7 @@ use dev_driver_rpc::Server as DevServer;
use file_rpc::Server as FileServer;
use std::{
io::{self, Read, Seek, SeekFrom},
ipc,
prelude::*,
os::mikros::ipc,
};
struct Serv;
@ -30,37 +27,52 @@ fn get_drive_from_number(num: u64) -> Result<Device, NewDeviceError> {
impl DevServer for Serv {
fn open(&self, path: &str) -> Result<u64, io::Error> {
match path {
dbg!();
let rval = match path {
"sda" => {
dbg!();
if PRIMARY_MASTER.is_ok() {
dbg!();
Ok(0)
} else {
dbg!();
Err(io::ErrorKind::NotFound.into())
}
}
"sdb" => {
dbg!();
if PRIMARY_SLAVE.is_ok() {
dbg!();
Ok(1)
} else {
dbg!();
Err(io::ErrorKind::NotFound.into())
}
}
"sdc" => {
dbg!();
if SECONDARY_MASTER.is_ok() {
dbg!();
Ok(2)
} else {
dbg!();
Err(io::ErrorKind::NotFound.into())
}
}
"sdd" => {
dbg!();
if SECONDARY_SLAVE.is_ok() {
dbg!();
Ok(3)
} else {
dbg!();
Err(io::ErrorKind::NotFound.into())
}
}
_ => Err(io::ErrorKind::NotFound.into()),
}
};
dbg!();
rval
}
}
impl FileServer for Serv {
@ -82,10 +94,10 @@ impl FileServer for Serv {
fn close(&self, _fd: u64) {}
}
main!({
fn main() {
dev_driver_rpc::register_server(Box::new(Serv));
file_rpc::register_server(Box::new(Serv));
loop {
ipc::process_messages()
}
});
}