1/* SPDX-License-Identifier: MIT
2 *
3 * Copyright (c) 2025, NVIDIA CORPORATION. All rights reserved.
4 */
5#include "nouveau_drv.h"
6#include "nouveau_dma.h"
7#include "nouveau_fence.h"
8
9#include "nv50_display.h"
10
11#include <nvif/push906f.h>
12
13#include <nvhw/class/clc36f.h>
14
15static int
16gv100_fence_emit32(struct nouveau_channel *chan, u64 virtual, u32 sequence)
17{
18 struct nvif_push *push = &chan->chan.push;
19 int ret;
20
21 ret = PUSH_WAIT(push, 8);
22 if (ret)
23 return ret;
24
25 PUSH_MTHD(push, NVC36F, SEM_ADDR_LO, lower_32_bits(virtual),
26 SEM_ADDR_HI, upper_32_bits(virtual),
27 SEM_PAYLOAD_LO, sequence);
28
29 PUSH_MTHD(push, NVC36F, SEM_EXECUTE,
30 NVDEF(NVC36F, SEM_EXECUTE, OPERATION, RELEASE) |
31 NVDEF(NVC36F, SEM_EXECUTE, RELEASE_WFI, EN) |
32 NVDEF(NVC36F, SEM_EXECUTE, PAYLOAD_SIZE, 32BIT) |
33 NVDEF(NVC36F, SEM_EXECUTE, RELEASE_TIMESTAMP, DIS));
34
35 PUSH_MTHD(push, NVC36F, NON_STALL_INTERRUPT, 0);
36
37 PUSH_KICK(push);
38 return 0;
39}
40
41static int
42gv100_fence_sync32(struct nouveau_channel *chan, u64 virtual, u32 sequence)
43{
44 struct nvif_push *push = &chan->chan.push;
45 int ret;
46
47 ret = PUSH_WAIT(push, 6);
48 if (ret)
49 return ret;
50
51 PUSH_MTHD(push, NVC36F, SEM_ADDR_LO, lower_32_bits(virtual),
52 SEM_ADDR_HI, upper_32_bits(virtual),
53 SEM_PAYLOAD_LO, sequence);
54
55 PUSH_MTHD(push, NVC36F, SEM_EXECUTE,
56 NVDEF(NVC36F, SEM_EXECUTE, OPERATION, ACQ_CIRC_GEQ) |
57 NVDEF(NVC36F, SEM_EXECUTE, ACQUIRE_SWITCH_TSG, EN) |
58 NVDEF(NVC36F, SEM_EXECUTE, PAYLOAD_SIZE, 32BIT));
59
60 PUSH_KICK(push);
61 return 0;
62}
63
64static int
65gv100_fence_context_new(struct nouveau_channel *chan)
66{
67 struct nv84_fence_chan *fctx;
68 int ret;
69
70 ret = nv84_fence_context_new(chan);
71 if (ret)
72 return ret;
73
74 fctx = chan->fence;
75 fctx->base.emit32 = gv100_fence_emit32;
76 fctx->base.sync32 = gv100_fence_sync32;
77 return 0;
78}
79
80int
81gv100_fence_create(struct nouveau_drm *drm)
82{
83 struct nv84_fence_priv *priv;
84 int ret;
85
86 ret = nv84_fence_create(drm);
87 if (ret)
88 return ret;
89
90 priv = drm->fence;
91 priv->base.context_new = gv100_fence_context_new;
92 return 0;
93}
94

source code of linux/drivers/gpu/drm/nouveau/gv100_fence.c