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_drv.h"
32
33#include <nvif/push006c.h>
34
35#include <nvhw/class/cl0039.h>
36
37static inline uint32_t
38nouveau_bo_mem_ctxdma(struct ttm_buffer_object *bo,
39		      struct nouveau_channel *chan, struct ttm_resource *reg)
40{
41	if (reg->mem_type == TTM_PL_TT)
42		return NvDmaTT;
43	return chan->vram.handle;
44}
45
46int
47nv04_bo_move_m2mf(struct nouveau_channel *chan, struct ttm_buffer_object *bo,
48		  struct ttm_resource *old_reg, struct ttm_resource *new_reg)
49{
50	struct nvif_push *push = chan->chan.push;
51	u32 src_ctxdma = nouveau_bo_mem_ctxdma(bo, chan, old_reg);
52	u32 src_offset = old_reg->start << PAGE_SHIFT;
53	u32 dst_ctxdma = nouveau_bo_mem_ctxdma(bo, chan, new_reg);
54	u32 dst_offset = new_reg->start << PAGE_SHIFT;
55	u32 page_count = PFN_UP(new_reg->size);
56	int ret;
57
58	ret = PUSH_WAIT(push, 3);
59	if (ret)
60		return ret;
61
62	PUSH_MTHD(push, NV039, SET_CONTEXT_DMA_BUFFER_IN, src_ctxdma,
63			       SET_CONTEXT_DMA_BUFFER_OUT, dst_ctxdma);
64
65	page_count = PFN_UP(new_reg->size);
66	while (page_count) {
67		int line_count = (page_count > 2047) ? 2047 : page_count;
68
69		ret = PUSH_WAIT(push, 11);
70		if (ret)
71			return ret;
72
73		PUSH_MTHD(push, NV039, OFFSET_IN, src_offset,
74				       OFFSET_OUT, dst_offset,
75				       PITCH_IN, PAGE_SIZE,
76				       PITCH_OUT, PAGE_SIZE,
77				       LINE_LENGTH_IN, PAGE_SIZE,
78				       LINE_COUNT, line_count,
79
80				       FORMAT,
81			  NVVAL(NV039, FORMAT, IN, 1) |
82			  NVVAL(NV039, FORMAT, OUT, 1),
83
84				       BUFFER_NOTIFY, NV039_BUFFER_NOTIFY_WRITE_ONLY);
85
86		PUSH_MTHD(push, NV039, NO_OPERATION, 0x00000000);
87
88		page_count -= line_count;
89		src_offset += (PAGE_SIZE * line_count);
90		dst_offset += (PAGE_SIZE * line_count);
91	}
92
93	return 0;
94}
95
96int
97nv04_bo_move_init(struct nouveau_channel *chan, u32 handle)
98{
99	struct nvif_push *push = chan->chan.push;
100	int ret;
101
102	ret = PUSH_WAIT(push, 4);
103	if (ret)
104		return ret;
105
106	PUSH_MTHD(push, NV039, SET_OBJECT, handle);
107	PUSH_MTHD(push, NV039, SET_CONTEXT_DMA_NOTIFIES, chan->drm->ntfy.handle);
108	return 0;
109}
110