Kernel: Lay groundwork for Intel HD Audio driver

Kernel/include/audio/hdaudio.h

@@ -0,0 +1,66 @@
+#pragma once
+
+// Intel HD Audio Driver for Lemon OS
+
+#include <device.h>
+
+namespace Audio {
+	class IntelHDAudioController : public Device {
+		struct ControllerRegs {
+			uint16_t globalCap; // Global Capabilities
+			uint8_t minorVersion;
+			uint8_t majorVersion;
+			uint16_t outputPayloadCap; // Output Payload Capability
+			uint16_t inputPayloadCap; // Input Payload Capability
+			uint32_t globalControl; // Global Control
+			uint16_t wakeEnable; // Wake Enable
+			uint16_t wakeStatus; // Wake Status
+			uint16_t globalStatus; // Global Status
+			uint8_t reserved[6];
+			uint16_t outputStreamPayloadCap; // Output Stream Payload Capability
+			uint16_t inputStreamPayloadCap; // Input Stream Payload Capability
+			uint8_t reserved2[4];
+			uint32_t intControl; // Interrupt Control
+			uint32_t intStatus; // Interrupt Status
+			uint8_t reserved3[8];
+			uint32_t wallClock; // Wall Clock Counter
+			uint8_t reserved4[4];
+			uint32_t streamSync; // Stream Synchronizatoin
+			uint8_t reserved5[4];
+			uint64_t corbBase; // CORB Base Address
+			uint16_t corbWriteP; // CORB Write Pointer
+			uint16_t corbReadP; // CORB Read Pointer
+			uint8_t corbControl; // CORB Control
+			uint8_t corbStatus; // CORB Status
+			uint8_t corbSize; // CORB Size
+			uint8_t reserved6;
+			uint64_t rirbBase; // RIRB Base
+			uint16_t rirbWriteP;
+			uint16_t rIntCount; // Response Interrupt Count
+			uint8_t rirbControl;
+			uint8_t rirbStatus;
+			uint8_t rirbSize;
+			uint8_t reserved7;
+			uint32_t immediateCmdOutputInterface; // Immediate Command Output Interface
+			uint32_t immediateCmdInputInterface; // Immediate Command Output Interface
+			uint16_t immediateCmdStatus;
+			uint8_t reserved8[6];
+			uint64_t dmaPositionBuffer;
+			uint8_t reserved9[8];
+			uint32_t streamDesc0Control : 24; // Input Stream Descriptor 0 Control
+			uint8_t streamDesc0Status;
+			uint32_t streamDesc0LinkPosInCurrentBuffer; // ISD0 Link Position in Current Buffer
+			uint32_t streamDesc0CyclicBufferLength;
+			uint16_t streamDesc0LastValidIndex;
+			uint8_t reserved10[2];
+			uint16_t streamDesc0FIFOSize;
+			uint16_t streamDesc0Format;
+			uint8_t reserved11[4];
+			uint64_t streamDesc0BufferDescListPtr;
+		} __attribute__((packed));
+
+		ControllerRegs* cRegs;
+
+		void Initialize();
+	};
+}

Kernel/meson.build

@@ -62,6 +62,8 @@ cpp_files = [
     'src/video.cpp',
     'src/videoconsole.cpp',
 
+    'src/audio/hdaudio.cpp',
+
     'src/fs/ext2.cpp',
     'src/fs/fat32.cpp',
     'src/fs/filesystem.cpp',

Kernel/src/arch/x86_64/syscalls.cpp

@@ -2520,10 +2520,11 @@ long SysEndpointQueue(RegisterContext* r){
 
 	Handle* endpHandle;
 	if(Scheduler::FindHandle(currentProcess, SC_ARG0(r), &endpHandle)){
-		Log::Warning("(%s): SysEndpointQueue: Invalid handle ID %d", currentProcess->name, SC_ARG0(r));
-		Log::Info("%x", r->rip);
-		UserPrintStackTrace(r->rbp, Scheduler::GetCurrentProcess()->addressSpace);
-
+		IF_DEBUG(debugLevelSyscalls >= DebugLevelNormal, {
+			Log::Warning("(%s): SysEndpointQueue: Invalid handle ID %d", currentProcess->name, SC_ARG0(r));
+			Log::Info("%x", r->rip);
+			UserPrintStackTrace(r->rbp, Scheduler::GetCurrentProcess()->addressSpace);
+		});
 		return -EINVAL;
 	}
 

Kernel/src/audio/hdaudio.cpp

@@ -0,0 +1,13 @@
+#include <audio/hdaudio.h>
+
+#include <pair.h>
+
+namespace Audio {
+	static const Pair<uint16_t, uint16_t> controllerPCIIDs[] = {
+
+	};
+
+	void IntelHDAudioController::Initialize(){
+
+	}
+}