1 /*
2  * Copyright 2012 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  * Authors: Ben Skeggs
23  */
24 
25 #include "nouveau_drm.h"
26 #include "nouveau_dma.h"
27 #include "nouveau_fence.h"
28 
29 #include "nv50_display.h"
30 
31 static int
32 nvc0_fence_emit32(struct nouveau_channel *chan, u64 virtual, u32 sequence)
33 {
34 	int ret = RING_SPACE(chan, 6);
35 	if (ret == 0) {
36 		BEGIN_NVC0(chan, 0, NV84_SUBCHAN_SEMAPHORE_ADDRESS_HIGH, 5);
37 		OUT_RING  (chan, upper_32_bits(virtual));
38 		OUT_RING  (chan, lower_32_bits(virtual));
39 		OUT_RING  (chan, sequence);
40 		OUT_RING  (chan, NV84_SUBCHAN_SEMAPHORE_TRIGGER_WRITE_LONG);
41 		OUT_RING  (chan, 0x00000000);
42 		FIRE_RING (chan);
43 	}
44 	return ret;
45 }
46 
47 static int
48 nvc0_fence_sync32(struct nouveau_channel *chan, u64 virtual, u32 sequence)
49 {
50 	int ret = RING_SPACE(chan, 5);
51 	if (ret == 0) {
52 		BEGIN_NVC0(chan, 0, NV84_SUBCHAN_SEMAPHORE_ADDRESS_HIGH, 4);
53 		OUT_RING  (chan, upper_32_bits(virtual));
54 		OUT_RING  (chan, lower_32_bits(virtual));
55 		OUT_RING  (chan, sequence);
56 		OUT_RING  (chan, NV84_SUBCHAN_SEMAPHORE_TRIGGER_ACQUIRE_GEQUAL |
57 				 NVC0_SUBCHAN_SEMAPHORE_TRIGGER_YIELD);
58 		FIRE_RING (chan);
59 	}
60 	return ret;
61 }
62 
63 static int
64 nvc0_fence_context_new(struct nouveau_channel *chan)
65 {
66 	int ret = nv84_fence_context_new(chan);
67 	if (ret == 0) {
68 		struct nv84_fence_chan *fctx = chan->fence;
69 		fctx->base.emit32 = nvc0_fence_emit32;
70 		fctx->base.sync32 = nvc0_fence_sync32;
71 	}
72 	return ret;
73 }
74 
75 int
76 nvc0_fence_create(struct nouveau_drm *drm)
77 {
78 	int ret = nv84_fence_create(drm);
79 	if (ret == 0) {
80 		struct nv84_fence_priv *priv = drm->fence;
81 		priv->base.context_new = nvc0_fence_context_new;
82 	}
83 	return ret;
84 }
85