From efdff9ad3ed8856fa492fd08810322030a5e97ee Mon Sep 17 00:00:00 2001
From: mailwl <mailwl@gmail.com>
Date: Fri, 22 Apr 2016 21:13:01 +0300
Subject: [PATCH 1/2] gsp::Gpu: implement AcquireRight, ReleaseRight functions

---
 src/core/hle/service/gsp_gpu.cpp | 45 ++++++++++++++++++++++++++------
 1 file changed, 37 insertions(+), 8 deletions(-)

diff --git a/src/core/hle/service/gsp_gpu.cpp b/src/core/hle/service/gsp_gpu.cpp
index 211fcf5990..9fb4962d8c 100644
--- a/src/core/hle/service/gsp_gpu.cpp
+++ b/src/core/hle/service/gsp_gpu.cpp
@@ -44,6 +44,8 @@ Kernel::SharedPtr<Kernel::SharedMemory> g_shared_memory;
 /// Thread index into interrupt relay queue
 u32 g_thread_id = 0;
 
+static bool gpu_right_acquired = false;
+
 /// Gets a pointer to a thread command buffer in GSP shared memory
 static inline u8* GetCommandBuffer(u32 thread_id) {
     return g_shared_memory->GetPointer(0x800 + (thread_id * sizeof(CommandBuffer)));
@@ -371,14 +373,10 @@ static void UnregisterInterruptRelayQueue(Service::Interface* self) {
  * @todo This probably does not belong in the GSP module, instead move to video_core
  */
 void SignalInterrupt(InterruptId interrupt_id) {
-    if (nullptr == g_interrupt_event) {
-        LOG_WARNING(Service_GSP, "cannot synchronize until GSP event has been created!");
-        return;
-    }
-    if (nullptr == g_shared_memory) {
-        LOG_WARNING(Service_GSP, "cannot synchronize until GSP shared memory has been created!");
+    if (!gpu_right_acquired) {
         return;
     }
+
     for (int thread_id = 0; thread_id < 0x4; ++thread_id) {
         InterruptRelayQueue* interrupt_relay_queue = GetInterruptRelayQueue(thread_id);
         u8 next = interrupt_relay_queue->index;
@@ -625,6 +623,35 @@ static void ImportDisplayCaptureInfo(Service::Interface* self) {
     LOG_WARNING(Service_GSP, "called");
 }
 
+/**
+ * GSP_GPU::AcquireRight service function
+ *  Outputs:
+ *      1: Result code
+ */
+static void AcquireRight(Service::Interface* self) {
+    u32* cmd_buff = Kernel::GetCommandBuffer();
+
+    gpu_right_acquired = true;
+
+    cmd_buff[1] = RESULT_SUCCESS.raw;
+
+    LOG_WARNING(Service_GSP, "called");
+}
+
+/**
+ * GSP_GPU::ReleaseRight service function
+ *  Outputs:
+ *      1: Result code
+ */
+static void ReleaseRight(Service::Interface* self) {
+    u32* cmd_buff = Kernel::GetCommandBuffer();
+
+    gpu_right_acquired = false;
+
+    cmd_buff[1] = RESULT_SUCCESS.raw;
+
+    LOG_WARNING(Service_GSP, "called");
+}
 
 const Interface::FunctionInfo FunctionTable[] = {
     {0x00010082, WriteHWRegs,                   "WriteHWRegs"},
@@ -648,8 +675,8 @@ const Interface::FunctionInfo FunctionTable[] = {
     {0x00130042, RegisterInterruptRelayQueue,   "RegisterInterruptRelayQueue"},
     {0x00140000, UnregisterInterruptRelayQueue, "UnregisterInterruptRelayQueue"},
     {0x00150002, nullptr,                       "TryAcquireRight"},
-    {0x00160042, nullptr,                       "AcquireRight"},
-    {0x00170000, nullptr,                       "ReleaseRight"},
+    {0x00160042, AcquireRight,                  "AcquireRight"},
+    {0x00170000, ReleaseRight,                  "ReleaseRight"},
     {0x00180000, ImportDisplayCaptureInfo,      "ImportDisplayCaptureInfo"},
     {0x00190000, nullptr,                       "SaveVramSysArea"},
     {0x001A0000, nullptr,                       "RestoreVramSysArea"},
@@ -670,11 +697,13 @@ Interface::Interface() {
     g_shared_memory = nullptr;
 
     g_thread_id = 0;
+    gpu_right_acquired = false;
 }
 
 Interface::~Interface() {
     g_interrupt_event = nullptr;
     g_shared_memory = nullptr;
+    gpu_right_acquired = false;
 }
 
 } // namespace

From 67c657bf80513c02f4e60e0953c58103e9f80405 Mon Sep 17 00:00:00 2001
From: mailwl <mailwl@gmail.com>
Date: Sat, 23 Apr 2016 16:17:03 +0300
Subject: [PATCH 2/2] return checks if event and memory created

---
 src/core/hle/service/gsp_gpu.cpp | 9 ++++++++-
 1 file changed, 8 insertions(+), 1 deletion(-)

diff --git a/src/core/hle/service/gsp_gpu.cpp b/src/core/hle/service/gsp_gpu.cpp
index 9fb4962d8c..d254fdd2ec 100644
--- a/src/core/hle/service/gsp_gpu.cpp
+++ b/src/core/hle/service/gsp_gpu.cpp
@@ -376,7 +376,14 @@ void SignalInterrupt(InterruptId interrupt_id) {
     if (!gpu_right_acquired) {
         return;
     }
-
+    if (nullptr == g_interrupt_event) {
+        LOG_WARNING(Service_GSP, "cannot synchronize until GSP event has been created!");
+        return;
+    }
+    if (nullptr == g_shared_memory) {
+        LOG_WARNING(Service_GSP, "cannot synchronize until GSP shared memory has been created!");
+        return;
+    }
     for (int thread_id = 0; thread_id < 0x4; ++thread_id) {
         InterruptRelayQueue* interrupt_relay_queue = GetInterruptRelayQueue(thread_id);
         u8 next = interrupt_relay_queue->index;