Add semaphore functions for gx2/dmae

Author: GaryOderNichts

include/dmae/sync.h

@@ -1,5 +1,6 @@
 #pragma once
 #include <wut.h>
+#include <gx2/semaphore.h>
 
 /**
  * \defgroup dmae_sync Synchronization
@@ -14,6 +15,12 @@ extern "C" {
 //! Timestamp for a DMAE operation.
 typedef uint64_t DMAETimeStamp;
 
+DMAETimeStamp
+DMAEGetLastSubmittedTimeStamp(void);
+
+DMAETimeStamp
+DMAEGetRetiredTimeStamp(void);
+
 /**
  * Waits for a DMAE operation to complete.
  *
@@ -26,6 +33,16 @@ typedef uint64_t DMAETimeStamp;
 BOOL
 DMAEWaitDone(DMAETimeStamp timestamp);
 
+uint32_t
+DMAEGetTimeout(void);
+
+void
+DMAESetTimeout(uint32_t timeout);
+
+void
+DMAESemaphore(GX2Semaphore *semaphore,
+              GX2SemaphoreAction action);
+
 #ifdef __cplusplus
 }
 #endif

include/gx2/enum.h

@@ -348,6 +348,12 @@ typedef enum GX2ScanTarget
 
 WUT_ENUM_BITMASK_TYPE(GX2ScanTarget)
 
+typedef enum GX2SemaphoreAction
+{
+   GX2_SEMAPHORE_ACTION_WAIT   = 0,
+   GX2_SEMAPHORE_ACTION_SIGNAL = 1,
+} GX2SemaphoreAction;
+
 typedef enum GX2ShaderMode
 {
    GX2_SHADER_MODE_UNIFORM_REGISTER = 0,

include/gx2/semaphore.h

@@ -0,0 +1,34 @@
+#pragma once
+#include <wut.h>
+#include "enum.h"
+
+/**
+ * \defgroup gx2_semaphore Semaphore
+ * \ingroup gx2
+ * @{
+ */
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+typedef uint64_t GX2Semaphore;
+
+/**
+ * Inserts a semaphore into the command stream.
+ *
+ * \param semaphore
+ * Address of the semaphore. Must be aligned by \c 0x8.
+ * 
+ * \param action
+ * Semaphore operation to perform.
+ */
+void
+GX2SetSemaphore(GX2Semaphore *semaphore,
+                GX2SemaphoreAction action);
+
+#ifdef __cplusplus
+}
+#endif
+
+/** @} */