From 8b5b328a1f012135c69f7ae975580c0496b6c7ce Mon Sep 17 00:00:00 2001
From: plutooo <plutooo@users.noreply.github.com>
Date: Sun, 15 Apr 2018 20:22:03 +0200
Subject: [PATCH] Added Dma

---
 nx/include/switch.h                           |  5 +++-
 .../switch/nvidia/cmds/{vn.h => common.h}     |  0
 nx/include/switch/nvidia/cmds/dma.h           | 13 ++++++++
 nx/include/switch/nvidia/cmds/dma_copy.h      |  1 +
 nx/source/nvidia/cmds/dma_copy.c              | 30 +++++++++++++++++++
 nx/source/nvidia/cmds/dma_memset.c            |  0
 6 files changed, 48 insertions(+), 1 deletion(-)
 rename nx/include/switch/nvidia/cmds/{vn.h => common.h} (100%)
 create mode 100644 nx/include/switch/nvidia/cmds/dma.h
 create mode 100644 nx/include/switch/nvidia/cmds/dma_copy.h
 create mode 100644 nx/source/nvidia/cmds/dma_copy.c
 create mode 100644 nx/source/nvidia/cmds/dma_memset.c

diff --git a/nx/include/switch.h b/nx/include/switch.h
index 3a965f26..760fd212 100644
--- a/nx/include/switch.h
+++ b/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"
diff --git a/nx/include/switch/nvidia/cmds/vn.h b/nx/include/switch/nvidia/cmds/common.h
similarity index 100%
rename from nx/include/switch/nvidia/cmds/vn.h
rename to nx/include/switch/nvidia/cmds/common.h
diff --git a/nx/include/switch/nvidia/cmds/dma.h b/nx/include/switch/nvidia/cmds/dma.h
new file mode 100644
index 00000000..ec1fec45
--- /dev/null
+++ b/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. 
+    */
+};
diff --git a/nx/include/switch/nvidia/cmds/dma_copy.h b/nx/include/switch/nvidia/cmds/dma_copy.h
new file mode 100644
index 00000000..09e7c08b
--- /dev/null
+++ b/nx/include/switch/nvidia/cmds/dma_copy.h
@@ -0,0 +1 @@
+void vnDmaCopy(Vn* vn, iova_t dst, iova_t src, size_t num);
diff --git a/nx/source/nvidia/cmds/dma_copy.c b/nx/source/nvidia/cmds/dma_copy.c
new file mode 100644
index 00000000..0260fd90
--- /dev/null
+++ b/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;
+    }
+}
diff --git a/nx/source/nvidia/cmds/dma_memset.c b/nx/source/nvidia/cmds/dma_memset.c
new file mode 100644
index 00000000..e69de29b