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

   1/*
   2 * Copyright 2020 Red Hat Inc.
   3 *
   4 * Permission is hereby granted, free of charge, to any person obtaining a
   5 * copy of this software and associated documentation files (the "Software"),
   6 * to deal in the Software without restriction, including without limitation
   7 * the rights to use, copy, modify, merge, publish, distribute, sublicense,
   8 * and/or sell copies of the Software, and to permit persons to whom the
   9 * Software is furnished to do so, subject to the following conditions:
  10 *
  11 * The above copyright notice and this permission notice shall be included in
  12 * all copies or substantial portions of the Software.
  13 *
  14 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
  15 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
  16 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
  17 * THE COPYRIGHT HOLDER(S) OR AUTHOR(S) BE LIABLE FOR ANY CLAIM, DAMAGES OR
  18 * OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
  19 * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
  20 * OTHER DEALINGS IN THE SOFTWARE.
  21 */
  22#include "nouveau_bo.h"
  23#include "nouveau_dma.h"
  24#include "nouveau_mem.h"
  25
  26#include <nvif/push906f.h>
  27
  28/*XXX: Fixup class to be compatible with NVIDIA's, which will allow sharing
  29 *     code with KeplerDmaCopyA.
  30 */
  31
  32int
  33nvc0_bo_move_copy(struct nouveau_channel *chan, struct ttm_buffer_object *bo,
  34                  struct ttm_mem_reg *old_reg, struct ttm_mem_reg *new_reg)
  35{
  36        struct nouveau_mem *mem = nouveau_mem(old_reg);
  37        struct nvif_push *push = chan->chan.push;
  38        u64 src_offset = mem->vma[0].addr;
  39        u64 dst_offset = mem->vma[1].addr;
  40        u32 page_count = new_reg->num_pages;
  41        int ret;
  42
  43        page_count = new_reg->num_pages;
  44        while (page_count) {
  45                int line_count = (page_count > 8191) ? 8191 : page_count;
  46
  47                ret = PUSH_WAIT(push, 10);
  48                if (ret)
  49                        return ret;
  50
  51                PUSH_NVSQ(push, NV90B5, 0x030c, upper_32_bits(src_offset),
  52                                        0x0310, lower_32_bits(src_offset),
  53                                        0x0314, upper_32_bits(dst_offset),
  54                                        0x0318, lower_32_bits(dst_offset),
  55                                        0x031c, PAGE_SIZE,
  56                                        0x0320, PAGE_SIZE,
  57                                        0x0324, PAGE_SIZE,
  58                                        0x0328, line_count);
  59                PUSH_NVIM(push, NV90B5, 0x0300, 0x0110);
  60
  61                page_count -= line_count;
  62                src_offset += (PAGE_SIZE * line_count);
  63                dst_offset += (PAGE_SIZE * line_count);
  64        }
  65
  66        return 0;
  67}
  68