drm/radeon: split r6xx and r7xx copy_dma functions

- r6xx actually uses a slightly different packet format,
although both formats seem to work ok.
- r7xx doesn't have the count multiple of 2 limitation.

Signed-off-by: Alex Deucher <alexander.deucher@amd.com>

4 files changed, 85 insertions, 7 deletions

diff --git a/drivers/gpu/drm/radeon/r600.c b/drivers/gpu/drm/radeon/r600.c
index 923f93647042..537e259b3837 100644
--- a/drivers/gpu/drm/radeon/r600.c
+++ b/drivers/gpu/drm/radeon/r600.c
@@ -2646,7 +2646,7 @@ int r600_copy_blit(struct radeon_device *rdev,
  * @num_gpu_pages: number of GPU pages to xfer
  * @fence: radeon fence object
  *
- * Copy GPU paging using the DMA engine (r6xx-r7xx).
+ * Copy GPU paging using the DMA engine (r6xx).
  * Used by the radeon ttm implementation to move pages if
  * registered as the asic copy callback.
  */
@@ -2669,8 +2669,8 @@ int r600_copy_dma(struct radeon_device *rdev,
         }
 
         size_in_dw = (num_gpu_pages << RADEON_GPU_PAGE_SHIFT) / 4;
-        num_loops = DIV_ROUND_UP(size_in_dw, 0xffff);
-        r = radeon_ring_lock(rdev, ring, num_loops * 5 + 8);
+        num_loops = DIV_ROUND_UP(size_in_dw, 0xFFFE);
+        r = radeon_ring_lock(rdev, ring, num_loops * 4 + 8);
         if (r) {
                 DRM_ERROR("radeon: moving bo (%d).\n", r);
                 radeon_semaphore_free(rdev, &sem, NULL);
@@ -2693,8 +2693,8 @@ int r600_copy_dma(struct radeon_device *rdev,
                 radeon_ring_write(ring, DMA_PACKET(DMA_PACKET_COPY, 0, 0, cur_size_in_dw));
                 radeon_ring_write(ring, dst_offset & 0xfffffffc);
                 radeon_ring_write(ring, src_offset & 0xfffffffc);
-                radeon_ring_write(ring, upper_32_bits(dst_offset) & 0xff);
-                radeon_ring_write(ring, upper_32_bits(src_offset) & 0xff);
+                radeon_ring_write(ring, (((upper_32_bits(dst_offset) & 0xff) << 16) |
+                                         (upper_32_bits(src_offset) & 0xff)));
                 src_offset += cur_size_in_dw * 4;
                 dst_offset += cur_size_in_dw * 4;
         }
diff --git a/drivers/gpu/drm/radeon/radeon_asic.c b/drivers/gpu/drm/radeon/radeon_asic.c
index 596bcbe80ed0..9056fafb00ea 100644
--- a/drivers/gpu/drm/radeon/radeon_asic.c
+++ b/drivers/gpu/drm/radeon/radeon_asic.c
@@ -1140,9 +1140,9 @@ static struct radeon_asic rv770_asic = {
         .copy = {
                 .blit = &r600_copy_blit,
                 .blit_ring_index = RADEON_RING_TYPE_GFX_INDEX,
-                .dma = &r600_copy_dma,
+                .dma = &rv770_copy_dma,
                 .dma_ring_index = R600_RING_TYPE_DMA_INDEX,
-                .copy = &r600_copy_dma,
+                .copy = &rv770_copy_dma,
                 .copy_ring_index = R600_RING_TYPE_DMA_INDEX,
         },
         .surface = {
diff --git a/drivers/gpu/drm/radeon/radeon_asic.h b/drivers/gpu/drm/radeon/radeon_asic.h
index 5f4882cc2152..15d70e613076 100644
--- a/drivers/gpu/drm/radeon/radeon_asic.h
+++ b/drivers/gpu/drm/radeon/radeon_asic.h
@@ -403,6 +403,10 @@ u32 rv770_page_flip(struct radeon_device *rdev, int crtc, u64 crtc_base);
 void r700_vram_gtt_location(struct radeon_device *rdev, struct radeon_mc *mc);
 void r700_cp_stop(struct radeon_device *rdev);
 void r700_cp_fini(struct radeon_device *rdev);
+int rv770_copy_dma(struct radeon_device *rdev,
+                  uint64_t src_offset, uint64_t dst_offset,
+                  unsigned num_gpu_pages,
+                   struct radeon_fence **fence);
 
 /*
  * evergreen
diff --git a/drivers/gpu/drm/radeon/rv770.c b/drivers/gpu/drm/radeon/rv770.c
index 87c979c4f721..1b2444f4d8f4 100644
--- a/drivers/gpu/drm/radeon/rv770.c
+++ b/drivers/gpu/drm/radeon/rv770.c
@@ -887,6 +887,80 @@ static int rv770_mc_init(struct radeon_device *rdev)
         return 0;
 }
 
+/**
+ * rv770_copy_dma - copy pages using the DMA engine
+ *
+ * @rdev: radeon_device pointer
+ * @src_offset: src GPU address
+ * @dst_offset: dst GPU address
+ * @num_gpu_pages: number of GPU pages to xfer
+ * @fence: radeon fence object
+ *
+ * Copy GPU paging using the DMA engine (r7xx).
+ * Used by the radeon ttm implementation to move pages if
+ * registered as the asic copy callback.
+ */
+int rv770_copy_dma(struct radeon_device *rdev,
+                  uint64_t src_offset, uint64_t dst_offset,
+                  unsigned num_gpu_pages,
+                  struct radeon_fence **fence)
+{
+        struct radeon_semaphore *sem = NULL;
+        int ring_index = rdev->asic->copy.dma_ring_index;
+        struct radeon_ring *ring = &rdev->ring[ring_index];
+        u32 size_in_dw, cur_size_in_dw;
+        int i, num_loops;
+        int r = 0;
+
+        r = radeon_semaphore_create(rdev, &sem);
+        if (r) {
+                DRM_ERROR("radeon: moving bo (%d).\n", r);
+                return r;
+        }
+
+        size_in_dw = (num_gpu_pages << RADEON_GPU_PAGE_SHIFT) / 4;
+        num_loops = DIV_ROUND_UP(size_in_dw, 0xFFFF);
+        r = radeon_ring_lock(rdev, ring, num_loops * 5 + 8);
+        if (r) {
+                DRM_ERROR("radeon: moving bo (%d).\n", r);
+                radeon_semaphore_free(rdev, &sem, NULL);
+                return r;
+        }
+
+        if (radeon_fence_need_sync(*fence, ring->idx)) {
+                radeon_semaphore_sync_rings(rdev, sem, (*fence)->ring,
+                                            ring->idx);
+                radeon_fence_note_sync(*fence, ring->idx);
+        } else {
+                radeon_semaphore_free(rdev, &sem, NULL);
+        }
+
+        for (i = 0; i < num_loops; i++) {
+                cur_size_in_dw = size_in_dw;
+                if (cur_size_in_dw > 0xFFFF)
+                        cur_size_in_dw = 0xFFFF;
+                size_in_dw -= cur_size_in_dw;
+                radeon_ring_write(ring, DMA_PACKET(DMA_PACKET_COPY, 0, 0, cur_size_in_dw));
+                radeon_ring_write(ring, dst_offset & 0xfffffffc);
+                radeon_ring_write(ring, src_offset & 0xfffffffc);
+                radeon_ring_write(ring, upper_32_bits(dst_offset) & 0xff);
+                radeon_ring_write(ring, upper_32_bits(src_offset) & 0xff);
+                src_offset += cur_size_in_dw * 4;
+                dst_offset += cur_size_in_dw * 4;
+        }
+
+        r = radeon_fence_emit(rdev, fence, ring->idx);
+        if (r) {
+                radeon_ring_unlock_undo(rdev, ring);
+                return r;
+        }
+
+        radeon_ring_unlock_commit(rdev, ring);
+        radeon_semaphore_free(rdev, &sem, *fence);
+
+        return r;
+}
+
 static int rv770_startup(struct radeon_device *rdev)
 {
         struct radeon_ring *ring;