1/*	$NetBSD: nouveau_nvc0_fence.c,v 1.4 2021/12/18 23:45:32 riastradh Exp $	*/
2
3/*
4 * Copyright 2012 Red Hat Inc.
5 *
6 * Permission is hereby granted, free of charge, to any person obtaining a
7 * copy of this software and associated documentation files (the "Software"),
8 * to deal in the Software without restriction, including without limitation
9 * the rights to use, copy, modify, merge, publish, distribute, sublicense,
10 * and/or sell copies of the Software, and to permit persons to whom the
11 * Software is furnished to do so, subject to the following conditions:
12 *
13 * The above copyright notice and this permission notice shall be included in
14 * all copies or substantial portions of the 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 * THE COPYRIGHT HOLDER(S) OR AUTHOR(S) 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 * Authors: Ben Skeggs
25 */
26
27#include <sys/cdefs.h>
28__KERNEL_RCSID(0, "$NetBSD: nouveau_nvc0_fence.c,v 1.4 2021/12/18 23:45:32 riastradh Exp $");
29
30#include "nouveau_drv.h"
31#include "nouveau_dma.h"
32#include "nouveau_fence.h"
33
34#include "nv50_display.h"
35
36static int
37nvc0_fence_emit32(struct nouveau_channel *chan, u64 virtual, u32 sequence)
38{
39	int ret = RING_SPACE(chan, 6);
40	if (ret == 0) {
41		BEGIN_NVC0(chan, 0, NV84_SUBCHAN_SEMAPHORE_ADDRESS_HIGH, 5);
42		OUT_RING  (chan, upper_32_bits(virtual));
43		OUT_RING  (chan, lower_32_bits(virtual));
44		OUT_RING  (chan, sequence);
45		OUT_RING  (chan, NV84_SUBCHAN_SEMAPHORE_TRIGGER_WRITE_LONG);
46		OUT_RING  (chan, 0x00000000);
47		FIRE_RING (chan);
48	}
49	return ret;
50}
51
52static int
53nvc0_fence_sync32(struct nouveau_channel *chan, u64 virtual, u32 sequence)
54{
55	int ret = RING_SPACE(chan, 5);
56	if (ret == 0) {
57		BEGIN_NVC0(chan, 0, NV84_SUBCHAN_SEMAPHORE_ADDRESS_HIGH, 4);
58		OUT_RING  (chan, upper_32_bits(virtual));
59		OUT_RING  (chan, lower_32_bits(virtual));
60		OUT_RING  (chan, sequence);
61		OUT_RING  (chan, NV84_SUBCHAN_SEMAPHORE_TRIGGER_ACQUIRE_GEQUAL |
62				 NVC0_SUBCHAN_SEMAPHORE_TRIGGER_YIELD);
63		FIRE_RING (chan);
64	}
65	return ret;
66}
67
68static int
69nvc0_fence_context_new(struct nouveau_channel *chan)
70{
71	int ret = nv84_fence_context_new(chan);
72	if (ret == 0) {
73		struct nv84_fence_chan *fctx = chan->fence;
74		fctx->base.emit32 = nvc0_fence_emit32;
75		fctx->base.sync32 = nvc0_fence_sync32;
76	}
77	return ret;
78}
79
80int
81nvc0_fence_create(struct nouveau_drm *drm)
82{
83	int ret = nv84_fence_create(drm);
84	if (ret == 0) {
85		struct nv84_fence_priv *priv = drm->fence;
86		priv->base.context_new = nvc0_fence_context_new;
87	}
88	return ret;
89}
90