drivers/gpu/drm/nouveau/nouveau_bo90b5.c

   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
  32 int
  33 nvc0_bo_move_copy(struct nouveau_channel *chan, struct ttm_buffer_object *bo,
  34                   struct ttm_resource *old_reg, struct ttm_resource *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 }