From 5df44e0c4f91d5d6ee3a2c6fe5f85c52e3ca1675 Mon Sep 17 00:00:00 2001
From: wheremyfoodat <44909372+wheremyfoodat@users.noreply.github.com>
Date: Sat, 11 Nov 2023 20:51:53 +0200
Subject: [PATCH] [GSP] Add GSP::GPU::ReleaseRight

---
 include/services/gsp_gpu.hpp  |  1 +
 src/core/services/gsp_gpu.cpp | 12 ++++++++++++
 2 files changed, 13 insertions(+)

diff --git a/include/services/gsp_gpu.hpp b/include/services/gsp_gpu.hpp
index 92ca36e2..68e24580 100644
--- a/include/services/gsp_gpu.hpp
+++ b/include/services/gsp_gpu.hpp
@@ -65,6 +65,7 @@ class GPUService {
 	void flushDataCache(u32 messagePointer);
 	void importDisplayCaptureInfo(u32 messagePointer);
 	void registerInterruptRelayQueue(u32 messagePointer);
+	void releaseRight(u32 messagePointer);
 	void saveVramSysArea(u32 messagePointer);
 	void setAxiConfigQoSMode(u32 messagePointer);
 	void setBufferSwap(u32 messagePointer);
diff --git a/src/core/services/gsp_gpu.cpp b/src/core/services/gsp_gpu.cpp
index 0e27c0ec..861dfb0a 100644
--- a/src/core/services/gsp_gpu.cpp
+++ b/src/core/services/gsp_gpu.cpp
@@ -15,6 +15,7 @@ namespace ServiceCommands {
 		FlushDataCache = 0x00080082,
 		SetLCDForceBlack = 0x000B0040,
 		TriggerCmdReqQueue = 0x000C0000,
+		ReleaseRight = 0x00170000,
 		ImportDisplayCaptureInfo = 0x00180000,
 		SaveVramSysArea = 0x00190000,
 		SetInternalPriorities = 0x001E0080,
@@ -49,6 +50,7 @@ void GPUService::handleSyncRequest(u32 messagePointer) {
 		case ServiceCommands::FlushDataCache: flushDataCache(messagePointer); break;
 		case ServiceCommands::ImportDisplayCaptureInfo: importDisplayCaptureInfo(messagePointer); break;
 		case ServiceCommands::RegisterInterruptRelayQueue: registerInterruptRelayQueue(messagePointer); break;
+		case ServiceCommands::ReleaseRight: releaseRight(messagePointer); break;
 		case ServiceCommands::SaveVramSysArea: saveVramSysArea(messagePointer); break;
 		case ServiceCommands::SetAxiConfigQoSMode: setAxiConfigQoSMode(messagePointer); break;
 		case ServiceCommands::SetBufferSwap: setBufferSwap(messagePointer); break;
@@ -80,6 +82,16 @@ void GPUService::acquireRight(u32 messagePointer) {
 	mem.write32(messagePointer + 4, Result::Success);
 }
 
+void GPUService::releaseRight(u32 messagePointer) {
+	log("GSP::GPU::ReleaseRight\n");
+	if (privilegedProcess == currentPID) {
+		privilegedProcess = 0xFFFFFFFF;
+	}
+
+	mem.write32(messagePointer, IPC::responseHeader(0x17, 1, 0));
+	mem.write32(messagePointer + 4, Result::Success);
+}
+
 // TODO: What is the flags field meant to be?
 // What is the "GSP module thread index" meant to be?
 // How does the shared memory handle thing work?