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 #include "nouveau_drv.h"
25 #include "nouveau_dma.h"
26 #include "nouveau_fence.h"
27 
28 #include "nv50_display.h"
29 
30 #include <nvif/push906f.h>
31 
32 #include <nvhw/class/cl906f.h>
33 
34 static int
35 nvc0_fence_emit32(struct nouveau_channel *chan, u64 virtual, u32 sequence)
36 {
37 	struct nvif_push *push = chan->chan.push;
38 	int ret = PUSH_WAIT(push, 6);
39 	if (ret == 0) {
40 		PUSH_MTHD(push, NV906F, SEMAPHOREA,
41 			  NVVAL(NV906F, SEMAPHOREA, OFFSET_UPPER, upper_32_bits(virtual)),
42 
43 					SEMAPHOREB, lower_32_bits(virtual),
44 					SEMAPHOREC, sequence,
45 
46 					SEMAPHORED,
47 			  NVDEF(NV906F, SEMAPHORED, OPERATION, RELEASE) |
48 			  NVDEF(NV906F, SEMAPHORED, RELEASE_WFI, EN) |
49 			  NVDEF(NV906F, SEMAPHORED, RELEASE_SIZE, 16BYTE),
50 
51 					NON_STALL_INTERRUPT, 0);
52 		PUSH_KICK(push);
53 	}
54 	return ret;
55 }
56 
57 static int
58 nvc0_fence_sync32(struct nouveau_channel *chan, u64 virtual, u32 sequence)
59 {
60 	struct nvif_push *push = chan->chan.push;
61 	int ret = PUSH_WAIT(push, 5);
62 	if (ret == 0) {
63 		PUSH_MTHD(push, NV906F, SEMAPHOREA,
64 			  NVVAL(NV906F, SEMAPHOREA, OFFSET_UPPER, upper_32_bits(virtual)),
65 
66 					SEMAPHOREB, lower_32_bits(virtual),
67 					SEMAPHOREC, sequence,
68 
69 					SEMAPHORED,
70 			  NVDEF(NV906F, SEMAPHORED, OPERATION, ACQ_GEQ) |
71 			  NVDEF(NV906F, SEMAPHORED, ACQUIRE_SWITCH, ENABLED));
72 		PUSH_KICK(push);
73 	}
74 	return ret;
75 }
76 
77 static int
78 nvc0_fence_context_new(struct nouveau_channel *chan)
79 {
80 	int ret = nv84_fence_context_new(chan);
81 	if (ret == 0) {
82 		struct nv84_fence_chan *fctx = chan->fence;
83 		fctx->base.emit32 = nvc0_fence_emit32;
84 		fctx->base.sync32 = nvc0_fence_sync32;
85 	}
86 	return ret;
87 }
88 
89 int
90 nvc0_fence_create(struct nouveau_drm *drm)
91 {
92 	int ret = nv84_fence_create(drm);
93 	if (ret == 0) {
94 		struct nv84_fence_priv *priv = drm->fence;
95 		priv->base.context_new = nvc0_fence_context_new;
96 	}
97 	return ret;
98 }
99