diff --git a/Ryujinx.Core/OsHle/Services/Nv/NvGpuGpu/NvGpuGpuGetActiveSlotMask.cs b/Ryujinx.Core/OsHle/Services/Nv/NvGpuGpu/NvGpuGpuGetActiveSlotMask.cs
new file mode 100644
index 000000000..3294f5138
--- /dev/null
+++ b/Ryujinx.Core/OsHle/Services/Nv/NvGpuGpu/NvGpuGpuGetActiveSlotMask.cs
@@ -0,0 +1,8 @@
+namespace Ryujinx.Core.OsHle.Services.Nv.NvGpuGpu
+{
+    struct NvGpuGpuGetActiveSlotMask
+    {
+        public int Slot;
+        public int Mask;
+    }
+}
diff --git a/Ryujinx.Core/OsHle/Services/Nv/NvGpuGpu/NvGpuGpuGetTpcMasks.cs b/Ryujinx.Core/OsHle/Services/Nv/NvGpuGpu/NvGpuGpuGetTpcMasks.cs
new file mode 100644
index 000000000..686649127
--- /dev/null
+++ b/Ryujinx.Core/OsHle/Services/Nv/NvGpuGpu/NvGpuGpuGetTpcMasks.cs
@@ -0,0 +1,10 @@
+namespace Ryujinx.Core.OsHle.Services.Nv.NvGpuGpu
+{
+    struct NvGpuGpuGetTpcMasks
+    {
+        public int  MaskBufferSize;
+        public int  Reserved;
+        public long MaskBufferAddress;
+        public long Unk;
+    }
+}
diff --git a/Ryujinx.Core/OsHle/Services/Nv/NvGpuGpu/NvGpuGpuIoctl.cs b/Ryujinx.Core/OsHle/Services/Nv/NvGpuGpu/NvGpuGpuIoctl.cs
index 772b6786e..9af9ad597 100644
--- a/Ryujinx.Core/OsHle/Services/Nv/NvGpuGpu/NvGpuGpuIoctl.cs
+++ b/Ryujinx.Core/OsHle/Services/Nv/NvGpuGpu/NvGpuGpuIoctl.cs
@@ -38,9 +38,14 @@ namespace Ryujinx.Core.OsHle.Services.Nv.NvGpuGpu
 
         private static int ZcullGetCtxSize(ServiceCtx Context)
         {
-            long InputPosition  = Context.Request.GetBufferType0x21Position();
             long OutputPosition = Context.Request.GetBufferType0x22Position();
 
+            NvGpuGpuZcullGetCtxSize Args = new NvGpuGpuZcullGetCtxSize();
+
+            Args.Size = 1;
+
+            AMemoryHelper.Write(Context.Memory, OutputPosition, Args);
+
             Context.Ns.Log.PrintStub(LogClass.ServiceNv, "Stubbed.");
 
             return NvResult.Success;
@@ -48,9 +53,23 @@ namespace Ryujinx.Core.OsHle.Services.Nv.NvGpuGpu
 
         private static int ZcullGetInfo(ServiceCtx Context)
         {
-            long InputPosition  = Context.Request.GetBufferType0x21Position();
             long OutputPosition = Context.Request.GetBufferType0x22Position();
 
+            NvGpuGpuZcullGetInfo Args = new NvGpuGpuZcullGetInfo();
+
+            Args.WidthAlignPixels           = 0x20;
+            Args.HeightAlignPixels          = 0x20;
+            Args.PixelSquaresByAliquots     = 0x400;
+            Args.AliquotTotal               = 0x800;
+            Args.RegionByteMultiplier       = 0x20;
+            Args.RegionHeaderSize           = 0x20;
+            Args.SubregionHeaderSize        = 0xc0;
+            Args.SubregionWidthAlignPixels  = 0x20;
+            Args.SubregionHeightAlignPixels = 0x40;
+            Args.SubregionCount             = 0x10;
+
+            AMemoryHelper.Write(Context.Memory, OutputPosition, Args);
+
             Context.Ns.Log.PrintStub(LogClass.ServiceNv, "Stubbed.");
 
             return NvResult.Success;
@@ -128,9 +147,15 @@ namespace Ryujinx.Core.OsHle.Services.Nv.NvGpuGpu
 
         private static int GetActiveSlotMask(ServiceCtx Context)
         {
-            long InputPosition  = Context.Request.GetBufferType0x21Position();
             long OutputPosition = Context.Request.GetBufferType0x22Position();
 
+            NvGpuGpuGetActiveSlotMask Args = new NvGpuGpuGetActiveSlotMask();
+
+            Args.Slot = 0x07;
+            Args.Mask = 0x01;
+
+            AMemoryHelper.Write(Context.Memory, OutputPosition, Args);
+
             Context.Ns.Log.PrintStub(LogClass.ServiceNv, "Stubbed.");
 
             return NvResult.Success;
diff --git a/Ryujinx.Core/OsHle/Services/Nv/NvGpuGpu/NvGpuGpuZcullGetCtxSize.cs b/Ryujinx.Core/OsHle/Services/Nv/NvGpuGpu/NvGpuGpuZcullGetCtxSize.cs
new file mode 100644
index 000000000..997cd42fe
--- /dev/null
+++ b/Ryujinx.Core/OsHle/Services/Nv/NvGpuGpu/NvGpuGpuZcullGetCtxSize.cs
@@ -0,0 +1,7 @@
+namespace Ryujinx.Core.OsHle.Services.Nv.NvGpuGpu
+{
+    struct NvGpuGpuZcullGetCtxSize
+    {
+        public int Size;
+    }
+}
diff --git a/Ryujinx.Core/OsHle/Services/Nv/NvGpuGpu/NvGpuGpuZcullGetInfo.cs b/Ryujinx.Core/OsHle/Services/Nv/NvGpuGpu/NvGpuGpuZcullGetInfo.cs
new file mode 100644
index 000000000..c4c5036d8
--- /dev/null
+++ b/Ryujinx.Core/OsHle/Services/Nv/NvGpuGpu/NvGpuGpuZcullGetInfo.cs
@@ -0,0 +1,16 @@
+namespace Ryujinx.Core.OsHle.Services.Nv.NvGpuGpu
+{
+    struct NvGpuGpuZcullGetInfo
+    {
+        public int WidthAlignPixels;
+        public int HeightAlignPixels;
+        public int PixelSquaresByAliquots;
+        public int AliquotTotal;
+        public int RegionByteMultiplier;
+        public int RegionHeaderSize;
+        public int SubregionHeaderSize;
+        public int SubregionWidthAlignPixels;
+        public int SubregionHeightAlignPixels;
+        public int SubregionCount;
+    }
+}