From 994cb875c12b773daf6d0233bb4e7c4497d2d87f Mon Sep 17 00:00:00 2001
From: wheremyfoodat <gponiris2004@gmail.com>
Date: Tue, 20 Sep 2022 23:56:17 +0300
Subject: [PATCH] [GSP::GPU] Implement SetLCDForceBlack

---
 include/services/gsp_gpu.hpp        |  1 +
 src/core/kernel/address_arbiter.cpp |  5 +++++
 src/core/services/gsp_gpu.cpp       | 12 +++++++++++-
 3 files changed, 17 insertions(+), 1 deletion(-)

diff --git a/include/services/gsp_gpu.hpp b/include/services/gsp_gpu.hpp
index 3a7c684e..73b8bd52 100644
--- a/include/services/gsp_gpu.hpp
+++ b/include/services/gsp_gpu.hpp
@@ -27,6 +27,7 @@ class GPUService {
 	// Service commands
 	void acquireRight(u32 messagePointer);
 	void registerInterruptRelayQueue(u32 messagePointer);
+	void setLCDForceBlack(u32 messagePointer);
 	void writeHwRegs(u32 messagePointer);
 	void writeHwRegsWithMask(u32 messagePointer);
 
diff --git a/src/core/kernel/address_arbiter.cpp b/src/core/kernel/address_arbiter.cpp
index 451921ed..ea6237cb 100644
--- a/src/core/kernel/address_arbiter.cpp
+++ b/src/core/kernel/address_arbiter.cpp
@@ -67,6 +67,11 @@ void Kernel::arbitrateAddress() {
 			break;
 		}
 
+		case ArbitrationType::Signal:
+			printf("Broken ArbitrateAddress (type == SIGNAL)\n");
+			switchThread(0);
+			break;
+
 		default:
 			Helpers::panic("ArbitrateAddress: Unimplemented type %s", arbitrationTypeToString(type));
 	}
diff --git a/src/core/services/gsp_gpu.cpp b/src/core/services/gsp_gpu.cpp
index 0323ab75..6aa0f7e0 100644
--- a/src/core/services/gsp_gpu.cpp
+++ b/src/core/services/gsp_gpu.cpp
@@ -5,7 +5,8 @@ namespace GPUCommands {
 		AcquireRight = 0x00160042,
 		RegisterInterruptRelayQueue = 0x00130042,
 		WriteHwRegs = 0x00010082,
-		WriteHwRegsWithMask = 0x00020084
+		WriteHwRegsWithMask = 0x00020084,
+		SetLCDForceBlack = 0x000B0040
 	};
 }
 
@@ -26,6 +27,7 @@ void GPUService::handleSyncRequest(u32 messagePointer) {
 	switch (command) {
 		case GPUCommands::AcquireRight: acquireRight(messagePointer); break;
 		case GPUCommands::RegisterInterruptRelayQueue: registerInterruptRelayQueue(messagePointer); break;
+		case GPUCommands::SetLCDForceBlack: setLCDForceBlack(messagePointer); break;
 		case GPUCommands::WriteHwRegs: writeHwRegs(messagePointer); break;
 		case GPUCommands::WriteHwRegsWithMask: writeHwRegsWithMask(messagePointer); break;
 ;		default: Helpers::panic("GPU service requested. Command: %08X\n", command);
@@ -144,4 +146,12 @@ void GPUService::writeHwRegsWithMask(u32 messagePointer) {
 	}
 
 	mem.write32(messagePointer + 4, Result::Success);
+}
+
+void GPUService::setLCDForceBlack(u32 messagePointer) {
+	u32 flag = mem.read32(messagePointer + 4);
+
+	if (flag != 0) {
+		printf("Filled both LCDs with black\n");
+	}
 }
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