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 
37 static inline uint32_t
38 nouveau_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 
46 int
47 nv04_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 
96 int
97 nv04_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