LXR linux/drivers/gpu/drm/nouveau/nouveau

   1/*
   2 * Copyright 2007 Dave Airlied
   3 * All Rights Reserved.
   4 *
   5 * Permission is hereby granted, free of charge, to any person obtaining a
   6 * copy of this software and associated documentation files (the "Software"),
   7 * to deal in the Software without restriction, including without limitation
   8 * the rights to use, copy, modify, merge, publish, distribute, sublicense,
   9 * and/or sell copies of the Software, and to permit persons to whom the
  10 * Software is furnished to do so, subject to the following conditions:
  11 *
  12 * The above copyright notice and this permission notice (including the next
  13 * paragraph) shall be included in all copies or substantial portions of the
  14 * Software.
  15 *
  16 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
  17 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
  18 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
  19 * VA LINUX SYSTEMS AND/OR ITS SUPPLIERS BE LIABLE FOR ANY CLAIM, DAMAGES OR
  20 * OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
  21 * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
  22 * OTHER DEALINGS IN THE SOFTWARE.
  23 */
  24/*
  25 * Authors: Dave Airlied <airlied@linux.ie>
  26 *          Ben Skeggs   <darktama@iinet.net.au>
  27 *          Jeremy Kolb  <jkolb@brandeis.edu>
  28 */
  29#include "nouveau_bo.h"
  30#include "nouveau_dma.h"
  31#include "nouveau_mem.h"
  32
  33#include <nvif/push206e.h>
  34
  35/*XXX: Fixup class to be compatible with NVIDIA's, which will allow sharing
  36 *     code with KeplerDmaCopyA.
  37 */
  38
  39int
  40nva3_bo_move_copy(struct nouveau_channel *chan, struct ttm_buffer_object *bo,
  41                  struct ttm_resource *old_reg, struct ttm_resource *new_reg)
  42{
  43        struct nouveau_mem *mem = nouveau_mem(old_reg);
  44        struct nvif_push *push = chan->chan.push;
  45        u64 src_offset = mem->vma[0].addr;
  46        u64 dst_offset = mem->vma[1].addr;
  47        u32 page_count = new_reg->num_pages;
  48        int ret;
  49
  50        page_count = new_reg->num_pages;
  51        while (page_count) {
  52                int line_count = (page_count > 8191) ? 8191 : page_count;
  53
  54                ret = PUSH_WAIT(push, 11);
  55                if (ret)
  56                        return ret;
  57
  58                PUSH_NVSQ(push, NV85B5, 0x030c, upper_32_bits(src_offset),
  59                                        0x0310, lower_32_bits(src_offset),
  60                                        0x0314, upper_32_bits(dst_offset),
  61                                        0x0318, lower_32_bits(dst_offset),
  62                                        0x031c, PAGE_SIZE,
  63                                        0x0320, PAGE_SIZE,
  64                                        0x0324, PAGE_SIZE,
  65                                        0x0328, line_count);
  66                PUSH_NVSQ(push, NV85B5, 0x0300, 0x00000110);
  67
  68                page_count -= line_count;
  69                src_offset += (PAGE_SIZE * line_count);
  70                dst_offset += (PAGE_SIZE * line_count);
  71        }
  72
  73        return 0;
  74}
  75