back into virtio work

ableos/Cargo.toml

@@ -18,17 +18,13 @@ run-args = [
     "-smp",
     "cores=2",
 
-    "-device",
-    "cirrus-vga",
 
-    # "-device",
-    # "virtio-blk-pci,drive=drive0,id=virtblk0,num-queues=4",
-    # A simple example of a boot image
-    # "-drive",
-    # "file=disk.qcow2,if=none,id=drive0",
 
-    "-device",
-    "virtio-rng",
+ "-soundhw", "pcspk",
+"-device", "virtio-gpu-pci",
+
+# "-machine", "pcspk-audiodev=0",
+
 
     "-qmp",
     "unix:../qmp-sock,server,nowait"

ableos/src/arch/x86_64/interrupts.rs

@@ -43,8 +43,7 @@ static IDT: Lazy<InterruptDescriptorTable> = Lazy::new(|| {
             .set_stack_index(gdt::DOUBLE_FAULT_IST_INDEX);
     }
 
-    // This gives fast interrupts
-    set_pit_frequency(1000);
+    reset_pit_for_cpu();
 
     idt[InterruptIndex::Timer.as_usize()].set_handler_fn(timer_interrupt_handler);
     idt[InterruptIndex::Keyboard.as_usize()].set_handler_fn(keyboard_interrupt_handler);
@@ -151,13 +150,29 @@ pub fn init_idt() {
     IDT.load();
 }
 
-fn set_pit_frequency(freq: u32) {
+pub fn set_pit_frequency(pit: u16, freq: u32) {
     let divisor: u16 = (1193180 / freq).try_into().unwrap();
 
     unsafe {
         outb(0x36, 0x43);
 
-        outb((divisor & 0xFF) as u8, 0x40);
-        outb((divisor >> 8) as u8, 0x40);
+        outb((divisor & 0xFF) as u8, 0x39 + pit);
+        outb((divisor >> 8) as u8, 0x40 + pit);
     }
 }
+pub fn set_pit_1(freq: u32) {
+    set_pit_frequency(1, freq);
+}
+pub fn set_pit_2(freq: u32) {
+    set_pit_frequency(2, freq);
+}
+
+pub fn set_pit_3(freq: u32) {
+    set_pit_frequency(3, freq);
+}
+
+pub fn reset_pit_for_cpu() {
+    set_pit_1(1000);
+    set_pit_2(1000);
+    set_pit_3(1000);
+}

ableos/src/devices/mod.rs

@@ -1,9 +1,10 @@
 pub mod character_devs;
-pub mod id;
-pub mod pci_inner;
-
 mod dev_vterm;
 
+pub mod id;
+pub mod pci;
+pub mod pci_inner;
+
 pub use self::Device::*;
 
 use crate::devices::dev_vterm::VTerm;

ableos/src/devices/pci/enums.rs

@@ -0,0 +1,178 @@
+/// The major class specification for a PCI device.
+#[allow(dead_code)]
+#[derive(Debug, Clone, Copy, PartialEq, Hash)]
+#[cfg_attr(feature = "serde", derive(Serialize, Deserialize))]
+#[repr(C)]
+pub enum PciClass {
+    Unclassified = 0x00,
+    MassStorage = 0x01,
+    Network = 0x02,
+    Display = 0x03,
+    Multimedia = 0x04,
+    Memory = 0x05,
+    Bridge = 0x06,
+    Other = 0xFF,
+}
+impl PciClass {
+    /// Convert a u8 into the corresponding PciClass
+    pub fn from_u8(n: u8) -> PciClass {
+        match n {
+            0x00 => PciClass::Unclassified,
+            0x01 => PciClass::MassStorage,
+            0x02 => PciClass::Network,
+            0x03 => PciClass::Display,
+            0x04 => PciClass::Multimedia,
+            0x05 => PciClass::Memory,
+            0x06 => PciClass::Bridge,
+            _ => PciClass::Other,
+        }
+    }
+    /// Convert a PciClass to its u8 representation
+    pub fn as_u8(&self) -> u8 {
+        *self as u8
+    }
+}
+impl From<u8> for PciClass {
+    /// Convert a u8 into the corresponding PciClass
+    fn from(n: u8) -> Self {
+        Self::from_u8(n)
+    }
+}
+
+#[allow(non_camel_case_types, dead_code)]
+#[derive(Debug, Clone, Copy, PartialEq)]
+#[cfg_attr(feature = "serde", derive(Serialize, Deserialize))]
+#[repr(C)]
+/// Full class specification (type and subtype) for a PCI device.
+///
+/// Uses non-camel-case types for readability.
+pub enum PciFullClass {
+    Unclassified_NonVgaCompatible = 0x0000,
+    Unclassified_VgaCompatible = 0x0001,
+
+    MassStorage_ScsiBus = 0x0100,
+    MassStorage_IDE = 0x0101,
+    MassStorage_Floppy = 0x0102,
+    MassStorage_IpiBus = 0x0103,
+    MassStorage_RAID = 0x0104,
+    MassStorage_ATA = 0x0105,
+    MassStorage_SATA = 0x0106,
+    MassStorage_SerialSCSI = 0x0107,
+    MassStorage_NVM = 0x0108,
+    MassStorage_Other = 0x0180,
+
+    Network_Ethernet = 0x0200,
+    Network_TokenRing = 0x0201,
+    Network_FDDI = 0x0202,
+    Network_ATM = 0x0203,
+    Network_ISDN = 0x0204,
+    Network_WorldFlip = 0x0205,
+    Network_PICMG = 0x0206,
+    Network_Infiniband = 0x0207,
+    Network_Fabric = 0x0208,
+    Network_Other = 0x0280,
+
+    Display_VGA = 0x0300,
+    Display_XGA = 0x0301,
+    Display_3D = 0x0302,
+    Display_Other = 0x0380,
+
+    Multimedia_Video = 0x0400,
+    Multimedia_AudioController = 0x0401,
+    Multimedia_Telephony = 0x0402,
+    Multimedia_AudioDevice = 0x0403,
+    Multimedia_Other = 0x0480,
+
+    Memory_RAM = 0x0500,
+    Memory_Flash = 0x0501,
+    Memory_Other = 0x0580,
+
+    Bridge_Host = 0x0600,
+    Bridge_ISA = 0x0601,
+    Bridge_EISA = 0x0602,
+    Bridge_MCA = 0x0603,
+    Bridge_PciToPci = 0x0604,
+    Bridge_PCMCIA = 0x0605,
+    Bridge_NuBus = 0x0606,
+    Bridge_CardBus = 0x0607,
+    Bridge_RACEway = 0x0608,
+    Bridge_PciToPciSemiTransparent = 0x0609,
+    Bridge_InfinibandToPci = 0x060A,
+    Bridge_Other = 0x0680,
+
+    Unknown = 0xFFFF,
+}
+impl PciFullClass {
+    // listen, i know this sucks, but i didn't want to include
+    // `num`, `num-traits` and `num-derive` as dependencies for
+    // this crate just for a convenience function
+    /// Convert a u16 into the corresponding PciFullClass
+    pub fn from_u16(n: u16) -> PciFullClass {
+        match n {
+            0x0000 => PciFullClass::Unclassified_NonVgaCompatible,
+            0x0001 => PciFullClass::Unclassified_VgaCompatible,
+
+            0x0100 => PciFullClass::MassStorage_ScsiBus,
+            0x0101 => PciFullClass::MassStorage_IDE,
+            0x0102 => PciFullClass::MassStorage_Floppy,
+            0x0103 => PciFullClass::MassStorage_IpiBus,
+            0x0104 => PciFullClass::MassStorage_RAID,
+            0x0105 => PciFullClass::MassStorage_ATA,
+            0x0106 => PciFullClass::MassStorage_SATA,
+            0x0107 => PciFullClass::MassStorage_SerialSCSI,
+            0x0108 => PciFullClass::MassStorage_NVM,
+            0x0180 => PciFullClass::MassStorage_Other,
+
+            0x0200 => PciFullClass::Network_Ethernet,
+            0x0201 => PciFullClass::Network_TokenRing,
+            0x0202 => PciFullClass::Network_FDDI,
+            0x0203 => PciFullClass::Network_ATM,
+            0x0204 => PciFullClass::Network_ISDN,
+            0x0205 => PciFullClass::Network_WorldFlip,
+            0x0206 => PciFullClass::Network_PICMG,
+            0x0207 => PciFullClass::Network_Infiniband,
+            0x0208 => PciFullClass::Network_Fabric,
+            0x0280 => PciFullClass::Network_Other,
+
+            0x0300 => PciFullClass::Display_VGA,
+            0x0301 => PciFullClass::Display_XGA,
+            0x0302 => PciFullClass::Display_3D,
+            0x0380 => PciFullClass::Display_Other,
+
+            0x0400 => PciFullClass::Multimedia_Video,
+            0x0401 => PciFullClass::Multimedia_AudioController,
+            0x0402 => PciFullClass::Multimedia_Telephony,
+            0x0403 => PciFullClass::Multimedia_AudioDevice,
+            0x0480 => PciFullClass::Multimedia_Other,
+
+            0x0500 => PciFullClass::Memory_RAM,
+            0x0501 => PciFullClass::Memory_Flash,
+            0x0580 => PciFullClass::Memory_Other,
+
+            0x0600 => PciFullClass::Bridge_Host,
+            0x0601 => PciFullClass::Bridge_ISA,
+            0x0602 => PciFullClass::Bridge_EISA,
+            0x0603 => PciFullClass::Bridge_MCA,
+            0x0604 => PciFullClass::Bridge_PciToPci,
+            0x0605 => PciFullClass::Bridge_PCMCIA,
+            0x0606 => PciFullClass::Bridge_NuBus,
+            0x0607 => PciFullClass::Bridge_CardBus,
+            0x0608 => PciFullClass::Bridge_RACEway,
+            0x0609 => PciFullClass::Bridge_PciToPciSemiTransparent,
+            0x060A => PciFullClass::Bridge_InfinibandToPci,
+            0x0680 => PciFullClass::Bridge_Other,
+
+            _ => PciFullClass::Unknown,
+        }
+    }
+    /// Convert a PciFullClass to its u16 representation
+    pub fn as_u16(&self) -> u16 {
+        *self as u16
+    }
+}
+impl From<u16> for PciFullClass {
+    /// Convert a u16 into the corresponding PciFullClass
+    fn from(n: u16) -> Self {
+        Self::from_u16(n)
+    }
+}

ableos/src/devices/pci/mod.rs

@@ -0,0 +1,227 @@
+// The MIT License (MIT)
+// Copyright (c) 2021 trashbyte
+// See LICENSE.txt for full license
+
+#![feature(asm)]
+
+extern crate alloc;
+use alloc::{format, string::String, vec::Vec};
+use core::fmt::{Display, Error, Formatter};
+
+#[cfg(feature = "serde")]
+#[macro_use]
+extern crate serde;
+
+mod enums;
+pub use enums::*;
+
+pub mod port;
+use port::*;
+
+// PciDeviceInfo ///////////////////////////////////////////////////////////////
+
+#[allow(dead_code)]
+#[derive(Clone, Debug)]
+#[cfg_attr(feature = "serde", derive(Serialize, Deserialize))]
+/// A struct containing info about a PCI device.
+pub struct PciDeviceInfo {
+    pub device: u8,
+    pub bus: u8,
+    pub device_id: u16,
+    pub vendor_id: u16,
+    pub full_class: PciFullClass,
+    pub header_type: u8,
+    pub bars: [u32; 6],
+    pub supported_fns: [bool; 8],
+    pub interrupt_line: u8,
+    pub interrupt_pin: u8,
+}
+impl PciDeviceInfo {
+    /// Get the class of the PCI device as a PciClass
+    pub fn class(&self) -> PciClass {
+        PciClass::from_u8(((self.full_class.as_u16() >> 8) & 0xFF) as u8)
+    }
+    /// Get the full class of the PCI device as a PciFullClass
+    pub fn subclass(&self) -> PciClass {
+        PciClass::from_u8((self.full_class.as_u16() & 0xFF) as u8)
+    }
+}
+impl Display for PciDeviceInfo {
+    fn fmt(&self, f: &mut Formatter<'_>) -> Result<(), Error> {
+        let vendor_name = name_for_vendor_id(self.vendor_id);
+        writeln!(
+            f,
+            "Device {:X} | Bus {:X} | Vendor: {}",
+            self.device, self.bus, vendor_name
+        )?;
+        writeln!(
+            f,
+            "    Class: {:?} ({:#06X})",
+            self.full_class,
+            self.full_class.as_u16()
+        )?;
+        writeln!(f, "    Header type: {:X}", self.header_type)?;
+        write!(f, "    Supported functions: 0")?;
+        for (i, b) in self.supported_fns.iter().enumerate().skip(1) {
+            if *b {
+                write!(f, ", {}", i)?;
+            }
+        }
+        writeln!(f)?;
+        write!(f, "    BARs: [ ")?;
+        for i in self.bars.iter() {
+            if *i == 0 {
+                write!(f, "0x0 ")?;
+            } else {
+                write!(f, "{:#010X} ", i)?;
+            }
+        }
+        writeln!(f, "]")?;
+        writeln!(
+            f,
+            "    Interrupt line / pin: {} / {}",
+            self.interrupt_line, self.interrupt_pin
+        )?;
+        Ok(())
+    }
+}
+
+// Public functions ////////////////////////////////////////////////////////////
+
+/// Converts a u16 vendor id into a human-readable name.
+pub fn name_for_vendor_id(vendor_id: u16) -> String {
+    match vendor_id {
+        0x8086 => "Intel Corp. (0x8086)".into(),
+        0x1234 => "QEMU (0x1234)".into(),
+        _ => format!("Unknown({:#06X})", vendor_id),
+    }
+}
+
+/// Brute force scans for devices 0-31 on buses 0-255.
+pub fn brute_force_scan() -> Vec<PciDeviceInfo> {
+    let mut infos = Vec::new();
+    for bus in 0u8..=255 {
+        for device in 0u8..32 {
+            if let Some(info) = check_device(bus, device) {
+                infos.push(info);
+            }
+        }
+    }
+    infos
+}
+
+// Internal functions //////////////////////////////////////////////////////////
+
+fn check_device(bus: u8, device: u8) -> Option<PciDeviceInfo> {
+    assert!(device < 32);
+    let function = 0u8;
+
+    let (device_id, vendor_id) = get_ids(bus, device, function);
+    if vendor_id == 0xFFFF {
+        // Device doesn't exist
+        return None;
+    }
+
+    let class = unsafe { pci_config_read(bus, device, 0, 0x8) };
+    let class = (class >> 16) & 0x0000FFFF;
+    let pci_class = PciFullClass::from_u16(class as u16);
+    let header_type = get_header_type(bus, device, function);
+
+    let mut supported_fns = [true, false, false, false, false, false, false, false];
+    if (header_type & 0x80) != 0 {
+        // It is a multi-function device, so check remaining functions
+        for function in 0u8..8 {
+            if get_ids(bus, device, function).1 != 0xFFFF {
+                if check_function(bus, device, function) {
+                    supported_fns[function as usize] = true;
+                }
+            }
+        }
+    }
+
+    let mut bars = [0, 0, 0, 0, 0, 0];
+    unsafe {
+        bars[0] = pci_config_read(bus, device, 0, 0x10);
+        bars[1] = pci_config_read(bus, device, 0, 0x14);
+        bars[2] = pci_config_read(bus, device, 0, 0x18);
+        bars[3] = pci_config_read(bus, device, 0, 0x1C);
+        bars[4] = pci_config_read(bus, device, 0, 0x20);
+        bars[5] = pci_config_read(bus, device, 0, 0x24);
+    }
+
+    let last_row = unsafe { pci_config_read(bus, device, 0, 0x3C) };
+
+    Some(PciDeviceInfo {
+        device,
+        bus,
+        device_id,
+        vendor_id,
+        full_class: pci_class,
+        header_type,
+        bars,
+        supported_fns,
+        interrupt_line: (last_row & 0xFF) as u8,
+        interrupt_pin: ((last_row >> 8) & 0xFF) as u8,
+    })
+}
+
+unsafe fn pci_config_read(bus: u8, device: u8, func: u8, offset: u8) -> u32 {
+    let bus = bus as u32;
+    let device = device as u32;
+    let func = func as u32;
+    let offset = offset as u32;
+    // construct address param
+    let address =
+        ((bus << 16) | (device << 11) | (func << 8) | (offset & 0xfc) | 0x80000000) as u32;
+
+    // write address
+    unsafe {
+        Port::<u32>::new(0xCF8).write(address);
+    }
+
+    // read data
+    unsafe { Port::<u32>::new(0xCFC).read() }
+}
+
+#[allow(dead_code)]
+unsafe fn pci_config_write(bus: u8, device: u8, func: u8, offset: u8, value: u32) {
+    let bus = bus as u32;
+    let device = device as u32;
+    let func = func as u32;
+    let offset = offset as u32;
+    // construct address param
+    let address =
+        ((bus << 16) | (device << 11) | (func << 8) | (offset & 0xfc) | 0x80000000) as u32;
+
+    // write address
+    unsafe {
+        Port::<u32>::new(0xCF8).write(address);
+    }
+
+    // write data
+    unsafe {
+        Port::<u32>::new(0xCFC).write(value);
+    }
+}
+
+fn get_header_type(bus: u8, device: u8, function: u8) -> u8 {
+    assert!(device < 32);
+    assert!(function < 8);
+    let res = unsafe { pci_config_read(bus, device, function, 0x0C) };
+    ((res >> 16) & 0xFF) as u8
+}
+
+fn check_function(bus: u8, device: u8, function: u8) -> bool {
+    assert!(device < 32);
+    assert!(function < 8);
+    get_ids(bus, device, function).1 != 0xFFFF
+}
+
+fn get_ids(bus: u8, device: u8, function: u8) -> (u16, u16) {
+    assert!(device < 32);
+    assert!(function < 8);
+    let res = unsafe { pci_config_read(bus, device, function, 0) };
+    let dev_id = ((res >> 16) & 0xFFFF) as u16;
+    let vnd_id = (res & 0xFFFF) as u16;
+    (dev_id, vnd_id)
+}

ableos/src/devices/pci/port.rs

@@ -0,0 +1,72 @@
+use core::marker::PhantomData;
+
+/// Trait for limiting [Port] to only being able to read/write u8/16/32.
+pub(crate) trait PortRW {
+    /// Read a value (self) from the port
+    unsafe fn read_port(port: u16) -> Self;
+    /// Write a value (self) to the port
+    unsafe fn write_port(port: u16, value: Self);
+}
+
+// PortRW Implementations //////////////////////////////////////////////////////////////////////////
+
+impl PortRW for u8 {
+    unsafe fn read_port(port: u16) -> Self {
+        let value: u8;
+        asm!("in al, dx", out("al") value, in("dx") port, options(nomem, nostack, preserves_flags));
+        value
+    }
+
+    unsafe fn write_port(port: u16, value: Self) {
+        asm!("out dx, al", in("dx") port, in("al") value, options(nomem, nostack, preserves_flags));
+    }
+}
+
+impl PortRW for u16 {
+    unsafe fn read_port(port: u16) -> Self {
+        let value: u16;
+        asm!("in ax, dx", out("ax") value, in("dx") port, options(nomem, nostack, preserves_flags));
+        value
+    }
+
+    unsafe fn write_port(port: u16, value: Self) {
+        asm!("out dx, ax", in("dx") port, in("ax") value, options(nomem, nostack, preserves_flags));
+    }
+}
+
+impl PortRW for u32 {
+    unsafe fn read_port(port: u16) -> Self {
+        let value: u32;
+        asm!("in eax, dx", out("eax") value, in("dx") port, options(nomem, nostack, preserves_flags));
+        value
+    }
+
+    unsafe fn write_port(port: u16, value: Self) {
+        asm!("out dx, eax", in("dx") port, in("eax") value, options(nomem, nostack, preserves_flags));
+    }
+}
+
+/// A simple wrapper around the asm instructions needed to read/write I/O ports.
+pub(crate) struct Port<T: PortRW> {
+    addr: u16,
+    _phantom: PhantomData<T>,
+}
+impl<T: PortRW> Port<T> {
+    /// Create a new `Port` with the given address and data size
+    pub(crate) fn new(addr: u16) -> Self {
+        Self {
+            addr,
+            _phantom: PhantomData,
+        }
+    }
+
+    /// Read a value from the port
+    pub(crate) unsafe fn read(&self) -> T {
+        T::read_port(self.addr)
+    }
+
+    /// Write a value to the port
+    pub(crate) unsafe fn write(&self, value: T) {
+        T::write_port(self.addr, value);
+    }
+}

ableos/src/devices/pci_inner.rs

@@ -2,6 +2,7 @@
 //!
 //!
 
+#[repr(C)]
 pub enum Vendors {
     ThreeDfxInteractiveInc = 0x121a,
     ThreeDLabs = 0x3d3d,

ableos/src/logger.rs

@@ -34,10 +34,7 @@ impl log::Log for SimpleLogger {
                 record.args()
             );
             // kprint!("{}", msg);
-            // NOTE: This needs to be fixed before merge
             if KERNEL_CONF.logging.log_to_serial {
-                // #[track_caller]
-
                 serial_println!(
                     "[{}{}{}][{}{}{}] {}",
                     color.0,

ableos/src/port_io.rs

@@ -1,8 +1,11 @@
-use cpuio::{inb, inl, outb, outl};
+use cpuio::{inb, inl, inw, outb, outl, outw};
 
 pub fn read32(reg: u16) -> u32 {
     unsafe { inl(reg) }
 }
+pub fn read16(reg: u16) -> u16 {
+    unsafe { inw(reg) as u16 }
+}
 
 pub fn read8(reg: u16) -> u8 {
     unsafe { inb(reg) }
@@ -12,6 +15,10 @@ pub fn write32(reg: u16, val: u32) {
     unsafe { outl(val, reg) }
 }
 
+pub fn write16(reg: u16, val: u16) {
+    unsafe { outw(val, reg) }
+}
+
 pub fn write8(reg: u16, val: u8) {
     unsafe { outb(val, reg) }
 }

ableos/src/prelude/mod.rs

@@ -1 +1,5 @@
 pub mod rust_2021;
+
+pub use core::assert;
+pub use core::option::Option::Some;
+pub use core::option::*;

ableos/src/prelude/rust_2021.rs

@@ -2,6 +2,7 @@ pub use crate::print::*;
 pub use crate::serial_print::*;
 pub use alloc::{boxed::Box, format, string::*, vec, vec::*};
 pub use core::arch::asm;
+
 pub use core::prelude::rust_2021::*;
 pub use core::prelude::v1::*;
 pub use log::{debug, info, trace, warn};

ableos/src/scratchpad.rs

@@ -1,9 +1,13 @@
 use core::alloc::Layout;
 
+use crate::arch::interrupts::{reset_pit_for_cpu, set_pit_2};
+use crate::devices::{pci, pci_inner};
 use crate::encoding::bin;
+use crate::port_io::{read32, read8, write8};
 use crate::rhai_shell::shell;
 use crate::wasm_jumploader::run_program;
 use acpi::{AcpiTables, PlatformInfo};
+use cpuio::outb;
 use genfs::Fs;
 
 /// Experimental scratchpad for testing.
@@ -16,14 +20,33 @@ pub fn scratchpad() {
         foo: (None) -> (Num); 
 }";
     let axel = axel::parse(axel_raw.to_string());
+
     for node in axel {
         info!("{:?}", node);
     }
+
+    use crate::devices::pci::brute_force_scan;
+    let infos = brute_force_scan();
+    for device in infos {
+        match device.vendor_id {
+            0x1af4 => {
+                info!("Found virtio device");
+                use crate::virtio::device_handler;
+                device_handler(device);
+            }
+            _ => {
+                info!("Found unknown device");
+            }
+        }
+    }
+
+    // sound(1000);
+    // sound_off();
+
     // acpi();
     real_shell();
 }
-
-pub fn pci_fun() {}
+use crate::port_io::write16;
 
 pub fn acpi() {
     let acpi_handler = AcpiStruct {};
@@ -176,3 +199,31 @@ pub fn command_parser(user: String, command: String) {
 
 use crate::filesystem::FILE_SYSTEM;
 use genfs::OpenOptions;
+
+pub fn sound(n_frequency: u32) {
+    let div: u32;
+    let tmp: u8;
+
+    div = 1193180 / n_frequency;
+    unsafe {
+        outb(0xb6, 0x43);
+
+        set_pit_2(div);
+
+        //And play the sound using the PC speaker
+        tmp = inb(0x61);
+        if tmp != (tmp | 3) {
+            outb(tmp | 3, 0x61);
+        }
+    }
+}
+
+pub fn sound_off() {
+    unsafe {
+        let tmp = inb(0x61) & 0xFC;
+        outb(tmp, 0x61)
+    };
+    reset_pit_for_cpu();
+}
+
+use cpuio::inb;

ableos/src/virtio/mod.rs

@@ -9,6 +9,26 @@ pub struct VirtioDevice {
     status: VirtioDeviceStatus,
 }
 
+use crate::devices::pci::PciDeviceInfo;
+
+pub fn device_handler(device: PciDeviceInfo) {
+    use crate::devices::pci::PciClass::*;
+    match device.class() {
+        // Unclassified => todo!(),
+        // MassStorage => todo!(),
+        // Network => todo!(),
+        Display => {
+            trace!("Display found");
+            println!("{}", device.interrupt_pin);
+        }
+        // Multimedia => todo!(),
+        // Memory => todo!(),
+        // Bridge => todo!(),
+        // Other => todo!(),
+        _ => {}
+    }
+}
+
 #[repr(C)]
 pub enum VirtioDeviceStatus {
     // Indicates that the guest OS has found the device and recognized it as a valid virtio device.
@@ -59,3 +79,16 @@ pub struct VirtioDeviceNotification {
     pub index: u32,
     pub value: u32,
 }
+
+pub struct Vring {
+    pub addr: u64,
+    pub len: u32,
+    pub flags: u16,
+    pub next: u16,
+}
+
+pub struct VringAvail {
+    pub flags: u16,
+    pub idx: u16,
+    pub ring: [u16; 0xFFFF],
+}

ableos/src/wasm_jumploader/mod.rs

@@ -2,7 +2,9 @@ pub mod host_functions;
 
 use crate::{filesystem::FILE_SYSTEM, wasm_jumploader::host_functions::HostExternals};
 use genfs::{Fs, OpenOptions};
-use wasmi::{ImportsBuilder, ModuleInstance};
+use wasmi::{
+    ImportsBuilder, MemoryDescriptor, ModuleImportResolver, ModuleInstance, StackRecycler,
+};
 
 pub fn interp() {
     trace!("Interpreting...");
@@ -101,17 +103,24 @@ pub fn interp() {
 pub fn run_program(program: Vec<u8>) {
     // Load wasm binary and prepare it for instantiation.
     let module = wasmi::Module::from_buffer(&program).expect("failed to load wasm");
+
     trace!("Loaded wasm binary");
     let imports = ImportsBuilder::new().with_resolver("env", &host_functions::HostExternals {});
     trace!("Created imports");
 
     // Instantiate a module with empty imports and
     // assert that there is no `start` function.
-    let instance = ModuleInstance::new(&module, &imports); // .expect("failed to instantiate wasm module")
+    let instance = ModuleInstance::new(&module, &imports);
 
+    // .expect("failed to instantiate wasm module")
+
+    use wasmi::GlobalRef;
     match instance {
         Ok(inst) => {
-            let instance = inst.assert_no_start();
+            let mut instance = inst.assert_no_start();
+
+            let abc = instance.globals().capacity();
+
             let mut is_driver = false;
             let _is_program = false;
             let mut has_driver_entry = false;