-int r300_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, RADEON_WAIT_2D_IDLECLEAN);
- 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;
-}
-