1 files changed, 46 insertions, 0 deletions

diff --git a/drivers/gpu/drm/radeon/r200.c b/drivers/gpu/drm/radeon/r200.c
index ff1e0cd608b..1146c9909c2 100644
--- a/drivers/gpu/drm/radeon/r200.c
+++ b/drivers/gpu/drm/radeon/r200.c
@@ -31,6 +31,7 @@
 #include "radeon_reg.h"
 #include "radeon.h"
 
+#include "r100d.h"
 #include "r200_reg_safe.h"
 
 #include "r100_track.h"
@@ -79,6 +80,51 @@ static int r200_get_vtx_size_0(uint32_t vtx_fmt_0)
         return vtx_size;
 }
 
+int r200_copy_dma(struct radeon_device *rdev,
+                  uint64_t src_offset,
+                  uint64_t dst_offset,
+                  unsigned num_pages,
+                  struct radeon_fence *fence)
+{
+        uint32_t size;
+        uint32_t cur_size;
+        int i, num_loops;
+        int r = 0;
+
+        /* radeon pitch is /64 */
+        size = num_pages << PAGE_SHIFT;
+        num_loops = DIV_ROUND_UP(size, 0x1FFFFF);
+        r = radeon_ring_lock(rdev, num_loops * 4 + 64);
+        if (r) {
+                DRM_ERROR("radeon: moving bo (%d).\n", r);
+                return r;
+        }
+        /* Must wait for 2D idle & clean before DMA or hangs might happen */
+        radeon_ring_write(rdev, PACKET0(RADEON_WAIT_UNTIL, 0));
+        radeon_ring_write(rdev, (1 << 16));
+        for (i = 0; i < num_loops; i++) {
+                cur_size = size;
+                if (cur_size > 0x1FFFFF) {
+                        cur_size = 0x1FFFFF;
+                }
+                size -= cur_size;
+                radeon_ring_write(rdev, PACKET0(0x720, 2));
+                radeon_ring_write(rdev, src_offset);
+                radeon_ring_write(rdev, dst_offset);
+                radeon_ring_write(rdev, cur_size | (1 << 31) | (1 << 30));
+                src_offset += cur_size;
+                dst_offset += cur_size;
+        }
+        radeon_ring_write(rdev, PACKET0(RADEON_WAIT_UNTIL, 0));
+        radeon_ring_write(rdev, RADEON_WAIT_DMA_GUI_IDLE);
+        if (fence) {
+                r = radeon_fence_emit(rdev, fence);
+        }
+        radeon_ring_unlock_commit(rdev);
+        return r;
+}
+
+
 static int r200_get_vtx_size_1(uint32_t vtx_fmt_1)
 {
         int vtx_size, i, tex_size;