Added Dma

nx/include/switch.h

@@ -63,19 +63,22 @@ extern "C" {
 #include "switch/nvidia/info.h"
 #include "switch/nvidia/fence.h"
 #include "switch/nvidia/rect.h"
+
 #include "switch/nvidia/gpu/cmd_list.h"
 #include "switch/nvidia/gpu/gpfifo.h"
 #include "switch/nvidia/gpu/zcull_ctx.h"
 #include "switch/nvidia/gpu/3d_ctx.h"
 #include "switch/nvidia/gpu/error_notifier.h"
 #include "switch/nvidia/gpu/gpu.h"
-#include "switch/nvidia/cmds/vn.h"
+
 #include "switch/nvidia/cmds/common.h"
 #include "switch/nvidia/cmds/3d.h"
 #include "switch/nvidia/cmds/3d_init.h"
 #include "switch/nvidia/cmds/3d_rendertarget.h"
 #include "switch/nvidia/cmds/3d_viewport.h"
 #include "switch/nvidia/cmds/3d_clear.h"
+#include "switch/nvidia/cmds/dma.h"
+#include "switch/nvidia/cmds/dma_copy.h"
 
 #include "switch/runtime/env.h"
 #include "switch/runtime/nxlink.h"

nx/include/switch/nvidia/cmds/dma.h

@@ -0,0 +1,13 @@
+enum {
+    NvRegDma_Launch = 0xC0,
+    NvRegDma_SourceAddr = 0x100,
+    NvRegDma_DestinationAddr = 0x102,
+    NvRegDma_SourcePitch = 0x104,
+    NvRegDma_DestinationPitch = 0x105,
+    NvRegDma_Count = 0x106,
+    /*
+    0x1C0 MemsetValue? 1 uint
+    0x1C2 MemsetControl? 1 bitfield Seen: 0x34444
+    0x1C4 MemsetLength? 1 uint In units of 4 bytes. 
+    */
+};

nx/include/switch/nvidia/cmds/dma_copy.h

@@ -0,0 +1 @@
+void vnDmaCopy(Vn* vn, iova_t dst, iova_t src, size_t num);

nx/source/nvidia/cmds/dma_copy.c

@@ -0,0 +1,30 @@
+#include <switch.h>
+#include <string.h>
+
+#define DMA_MAXCOPY 0x3FFFFF
+
+void vnDmaCopy(Vn* vn, iova_t dst, iova_t src, size_t num) {
+    while (num) {
+        size_t part = num;
+
+        if (part >= DMA_MAXCOPY)
+            part = DMA_MAXCOPY;
+
+        vnAddCmd(
+            vn,
+            NvIncr(
+                4, NvRegDma_SourceAddr,
+                src>>32, src,
+                dst>>32, dst,
+                1, 1,
+                part
+            ),
+            NvImm(
+                4, NvRegDma_Launch,
+                0x186
+            )
+        );
+
+        num -= part;
+    }
+}