GPU: Add missing puller methods.

This adds some missing puller methods. We don't assert them as these are 
nop operations for us.

src/video_core/gpu.cpp

@@ -143,12 +143,12 @@ enum class BufferMethods {
     NotifyIntr = 0x8,
     WrcacheFlush = 0x9,
     Unk28 = 0xA,
-    Unk2c = 0xB,
+    UnkCacheFlush = 0xB,
     RefCnt = 0x14,
     SemaphoreAcquire = 0x1A,
     SemaphoreRelease = 0x1B,
-    Unk70 = 0x1C,
-    Unk74 = 0x1D,
+    FenceValue = 0x1C,
+    FenceAction = 0x1D,
     Unk78 = 0x1E,
     Unk7c = 0x1F,
     Yield = 0x20,
@@ -194,6 +194,10 @@ void GPU::CallPullerMethod(const MethodCall& method_call) {
     case BufferMethods::SemaphoreAddressLow:
     case BufferMethods::SemaphoreSequence:
     case BufferMethods::RefCnt:
+    case BufferMethods::UnkCacheFlush:
+    case BufferMethods::WrcacheFlush:
+    case BufferMethods::FenceValue:
+    case BufferMethods::FenceAction:
         break;
     case BufferMethods::SemaphoreTrigger: {
         ProcessSemaphoreTriggerMethod();
@@ -204,21 +208,11 @@ void GPU::CallPullerMethod(const MethodCall& method_call) {
         LOG_ERROR(HW_GPU, "Special puller engine method NotifyIntr not implemented");
         break;
     }
-    case BufferMethods::WrcacheFlush: {
-        // TODO(Kmather73): Research and implement this method.
-        LOG_ERROR(HW_GPU, "Special puller engine method WrcacheFlush not implemented");
-        break;
-    }
     case BufferMethods::Unk28: {
         // TODO(Kmather73): Research and implement this method.
         LOG_ERROR(HW_GPU, "Special puller engine method Unk28 not implemented");
         break;
     }
-    case BufferMethods::Unk2c: {
-        // TODO(Kmather73): Research and implement this method.
-        LOG_ERROR(HW_GPU, "Special puller engine method Unk2c not implemented");
-        break;
-    }
     case BufferMethods::SemaphoreAcquire: {
         ProcessSemaphoreAcquire();
         break;

src/video_core/gpu.h

@@ -194,7 +194,12 @@ public:
 
                 u32 semaphore_acquire;
                 u32 semaphore_release;
-                INSERT_PADDING_WORDS(0xE4);
+                u32 fence_value;
+                union {
+                    BitField<4, 4, u32> operation;
+                    BitField<8, 8, u32> id;
+                } fence_action;
+                INSERT_PADDING_WORDS(0xE2);
 
                 // Puller state
                 u32 acquire_mode;
@@ -274,6 +279,8 @@ ASSERT_REG_POSITION(semaphore_trigger, 0x7);
 ASSERT_REG_POSITION(reference_count, 0x14);
 ASSERT_REG_POSITION(semaphore_acquire, 0x1A);
 ASSERT_REG_POSITION(semaphore_release, 0x1B);
+ASSERT_REG_POSITION(fence_value, 0x1C);
+ASSERT_REG_POSITION(fence_action, 0x1D);
 
 ASSERT_REG_POSITION(acquire_mode, 0x100);
 ASSERT_REG_POSITION(acquire_source, 0x101);