Add PCI driver

scripts/build_js.js

@@ -6,4 +6,6 @@ writeFileSync(
   readFileSync("build/index.js", "utf-8")
     .replaceAll("let ", "var ")
     .replaceAll("const ", "var ")
+    .replaceAll("\n`", "\\n`")
+    .replaceAll("`", "'")
 );

src/kernel/kernel.c

@@ -56,6 +56,35 @@ duk_ret_t native_ptout(duk_context *ctx)
   return 0;
 }
 
+duk_ret_t native_dword_in(duk_context *ctx)
+{
+  // Get the port (first argument)
+  uint16_t port = (uint16_t)duk_to_uint32(ctx, 0);
+
+  uint32_t result;
+  __asm__ volatile("inl %1, %0"
+                   : "=a"(result)
+                   : "Nd"(port));
+
+  duk_push_uint(ctx, (duk_uint_t)result);
+  return 1;
+}
+
+duk_ret_t native_dword_out(duk_context *ctx)
+{
+  // Get the port (first argument)
+  uint16_t port = (uint16_t)duk_to_uint32(ctx, 0);
+
+  // Get the value to write (second argument)
+  uint32_t value = (uint32_t)duk_to_uint32(ctx, 1);
+
+  __asm__ volatile("outl %0, %1"
+                   :
+                   : "a"(value), "Nd"(port));
+
+  return 0;
+}
+
 void kmain()
 {
   // Initialize Duktape heap
@@ -73,6 +102,14 @@ void kmain()
   duk_push_c_function(ctx, native_ptout, 2);
   duk_put_global_string(ctx, "$ptout");
 
+  // Register native dword in function
+  duk_push_c_function(ctx, native_dword_in, 1);
+  duk_put_global_string(ctx, "$dwordin");
+
+  // Register native dword out function
+  duk_push_c_function(ctx, native_dword_out, 2);
+  duk_put_global_string(ctx, "$dwordout");
+
   // Execute embedded JavaScript code from build/index.js
   duk_push_string(ctx, embedded_js_code);
   duk_int_t returnCode = duk_peval(ctx);

src/os/src/kernel/drivers/dev/pci.ts

@@ -0,0 +1,122 @@
+import { dwordin, dwordout } from "../../../lib/libts/dword";
+import { portin, portout } from "../../../lib/libts/port";
+import { Logger } from "../../../lib/libstd/logger/logger.kmod";
+
+const KDRIVER_PCI_CONFIG_ADDR = 0xcf8;
+const KDRIVER_PCI_CONFIG_DATA = 0xcfc;
+
+export function kdriver_dev_pci_init() {}
+
+export function kdriver_dev_pci_detectDevices() {
+  Logger.log("[PCI] Scanning...");
+
+  for (let bus = 0; bus < 256; bus++) {
+    for (let device = 0; device < 32; device++) {
+      kdriver_dev_pci_checkDevice(bus, device, 0);
+
+      const headerType = kdriver_dev_pci_getHeaderType(bus, device, 0);
+      if ((headerType & 0x80) !== 0) {
+        for (let func = 1; func < 8; func++) {
+          kdriver_dev_pci_checkDevice(bus, device, func);
+        }
+      }
+    }
+  }
+}
+
+export function kdriver_dev_pci_checkDevice(
+  bus: number,
+  device: number,
+  func: number
+) {
+  const vendorId = kdriver_dev_pci_getVendorId(bus, device, func);
+
+  if (vendorId === 0xffff) return;
+
+  const deviceId = kdriver_dev_pci_getDeviceId(bus, device, func);
+  const classCode = kdriver_dev_pci_getClassCode(bus, device, func);
+  const subclass = kdriver_dev_pci_getSubclass(bus, device, func);
+
+  Logger.log(
+    "[PCI] Found device pci:" +
+      bus +
+      ":" +
+      device +
+      ":" +
+      func +
+      " (vendor:" +
+      vendorId.toString(16) +
+      ", device:" +
+      deviceId.toString(16) +
+      ", class:" +
+      classCode.toString(16) +
+      ", subclass:" +
+      subclass.toString(16) +
+      ")"
+  );
+}
+
+export function kdriver_dev_pci_getDeviceId(
+  bus: number,
+  device: number,
+  func: number
+) {
+  const data = kdriver_dev_pci_readConfigDword(bus, device, func, 0);
+
+  return data >> 16;
+}
+
+export function kdriver_dev_pci_getVendorId(
+  bus: number,
+  device: number,
+  func: number
+) {
+  const data = kdriver_dev_pci_readConfigDword(bus, device, func, 0);
+
+  return data & 0xffff;
+}
+
+export function kdriver_dev_pci_getClassCode(
+  bus: number,
+  device: number,
+  func: number
+) {
+  const data = kdriver_dev_pci_readConfigDword(bus, device, func, 8);
+
+  return (data >> 24) & 0xff;
+}
+
+export function kdriver_dev_pci_getSubclass(
+  bus: number,
+  device: number,
+  func: number
+) {
+  const data = kdriver_dev_pci_readConfigDword(bus, device, func, 8);
+
+  return (data >> 16) & 0xff;
+}
+
+export function kdriver_dev_pci_getHeaderType(
+  bus: number,
+  device: number,
+  func: number
+) {
+  const data = kdriver_dev_pci_readConfigDword(bus, device, func, 12);
+
+  return (data >> 16) & 0xff;
+}
+
+export function kdriver_dev_pci_readConfigDword(
+  bus: number,
+  device: number,
+  func: number,
+  offset: number
+) {
+  const address =
+    (1 << 31) | (bus << 16) | (device << 11) | (func << 8) | (offset & 0xfc);
+
+  dwordout(KDRIVER_PCI_CONFIG_ADDR, address);
+  const data = dwordin(KDRIVER_PCI_CONFIG_DATA);
+
+  return data;
+}

src/os/src/kernel/index.ts

@@ -1,6 +1,7 @@
 import { charc } from "../lib/libts/byte";
 import { padStart } from "../lib/libts/string";
 import { getDate } from "../lib/sys/date";
+import { kdriver_dev_pci_detectDevices } from "./drivers/dev/pci";
 import {
   kdriver_etc_serial_read,
   kdriver_etc_serial_transmit,
@@ -20,20 +21,9 @@ export function kmain() {
 
   kmod_drivers_register();
 
-  kdriver_etc_serial_transmit(charc("H"));
+  kdriver_dev_pci_detectDevices();
-  kdriver_etc_serial_transmit(charc("e"));
-  kdriver_etc_serial_transmit(charc("l"));
-  kdriver_etc_serial_transmit(charc("l"));
-  kdriver_etc_serial_transmit(charc("o"));
 
   kmod_graphics_vga_init();
   kmod_graphics_vga_pushLine("[Kernel] Kernel initialized successfully.");
   kmod_graphics_vga_pushLine("Current date: " + getDate().toDateString());
-
-  while (true) {
-    const d = kdriver_etc_serial_read();
-    kmod_graphics_vga_pushLine(
-      "Serial input: 0x" + padStart(d.toString(16), 2, "0")
-    );
-  }
 }

src/os/src/kernel/modules/drivers/drivers.kmod.ts

@@ -1,6 +1,7 @@
+import { kdriver_dev_pci_init } from "../../drivers/dev/pci";
 import { kdriver_etc_serial_init } from "../../drivers/etc/serial";
 
-const drivers = [kdriver_etc_serial_init];
+const drivers = [kdriver_etc_serial_init, kdriver_dev_pci_init];
 
 export function kmod_drivers_init(): void {}
 

src/os/src/lib/libstd/logger/logger.kmod.ts

@@ -0,0 +1,12 @@
+import { charc } from "../../libts/byte";
+import { kdriver_etc_serial_transmit } from "../../../kernel/drivers/etc/serial";
+
+export const Logger = {
+  log(message: string) {
+    for (let i = 0; i < message.length; i++) {
+      kdriver_etc_serial_transmit(charc(message[i]!));
+    }
+
+    kdriver_etc_serial_transmit(charc("\n"));
+  },
+};

src/os/src/lib/libts/dword.ts

@@ -0,0 +1,7 @@
+export function dwordin(dw: number): number {
+  return $dwordin(dw);
+}
+
+export function dwordout(dw: number, value: number): void {
+  $dwordout(dw, value);
+}

src/os/src/lib/sys/pci/class.ts

@@ -0,0 +1,29 @@
+import { KDriverPCIClass } from "../../../types/dev/pci/class";
+
+const sysPCIClassNames = {
+  [KDriverPCIClass.MassStorageController]: "Mass Storage Controller",
+  [KDriverPCIClass.NetworkController]: "Network Controller",
+  [KDriverPCIClass.DisplayController]: "Display Controller",
+  [KDriverPCIClass.MultimediaController]: "Multimedia Controller",
+  [KDriverPCIClass.MemoryController]: "Memory Controller",
+  [KDriverPCIClass.BridgeDevice]: "Bridge Device",
+  [KDriverPCIClass.SimpleCommunicationsController]:
+    "Simple Communications Controller",
+  [KDriverPCIClass.BaseSystemPeripheral]: "Base System Peripheral",
+  [KDriverPCIClass.InputDevice]: "Input Device",
+  [KDriverPCIClass.DockingStation]: "Docking Station",
+  [KDriverPCIClass.Processors]: "Processors",
+  [KDriverPCIClass.SerialBusController]: "Serial Bus Controller",
+  [KDriverPCIClass.WirelessController]: "Wireless Controller",
+  [KDriverPCIClass.IntelligentIOController]: "Intelligent I/O Controller",
+  [KDriverPCIClass.SatelliteCommunicationController]:
+    "Satellite Communication Controller",
+  [KDriverPCIClass.EncryptionDecryptionController]:
+    "Encryption/Decryption Controller",
+  [KDriverPCIClass.DataAcquisitionAndSignalProcessingController]:
+    "Data Acquisition and Signal Processing Controller",
+};
+
+export function sys_pci_class_name(classId: KDriverPCIClass): string {
+  return sysPCIClassNames[classId] || "Unknown";
+}

src/os/src/types/c/bindings.d.ts

@@ -1,3 +1,5 @@
 declare function $addrw(address: number, value: number): void;
 declare function $ptin(port: number): number;
 declare function $ptout(port: number, value: number): void;
+declare function $dwordin(port: number): number;
+declare function $dwordout(port: number, value: number): void;

src/os/src/types/dev/pci/class.ts

@@ -0,0 +1,19 @@
+export enum KDriverPCIClass {
+  MassStorageController = 1,
+  NetworkController = 2,
+  DisplayController = 3,
+  MultimediaController = 4,
+  MemoryController = 5,
+  BridgeDevice = 6,
+  SimpleCommunicationsController = 7,
+  BaseSystemPeripheral = 8,
+  InputDevice = 9,
+  DockingStation = 10,
+  Processors = 11,
+  SerialBusController = 12,
+  WirelessController = 13,
+  IntelligentIOController = 14,
+  SatelliteCommunicationController = 15,
+  EncryptionDecryptionController = 16,
+  DataAcquisitionAndSignalProcessingController = 17,
+}