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_resource *old_reg, struct ttm_resource *new_reg)
35{
36 struct nouveau_mem *mem = nouveau_mem(reg: 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 = PFN_UP(new_reg->size);
41 int ret;
42
43 page_count = PFN_UP(new_reg->size);
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

source code of linux/drivers/gpu/drm/nouveau/nouveau_bo90b5.c