drivers/gpu/drm/nouveau/nouveau_bo85b5.c

   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
  39 int
  40 nva3_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 }