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 }
68