[go: nahoru, domu]
1/*
2 * Copyright 2014 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 <bskeggs@redhat.com>
23 */
24
25#include "priv.h"
26
27static int
28nvkm_ltc_tags_alloc(struct nouveau_ltc *ltc, u32 n,
29		    struct nouveau_mm_node **pnode)
30{
31	struct nvkm_ltc_priv *priv = (void *)ltc;
32	int ret;
33
34	ret = nouveau_mm_head(&priv->tags, 0, 1, n, n, 1, pnode);
35	if (ret)
36		*pnode = NULL;
37
38	return ret;
39}
40
41static void
42nvkm_ltc_tags_free(struct nouveau_ltc *ltc, struct nouveau_mm_node **pnode)
43{
44	struct nvkm_ltc_priv *priv = (void *)ltc;
45	nouveau_mm_free(&priv->tags, pnode);
46}
47
48static void
49nvkm_ltc_tags_clear(struct nouveau_ltc *ltc, u32 first, u32 count)
50{
51	const struct nvkm_ltc_impl *impl = (void *)nv_oclass(ltc);
52	struct nvkm_ltc_priv *priv = (void *)ltc;
53	const u32 limit = first + count - 1;
54
55	BUG_ON((first > limit) || (limit >= priv->num_tags));
56
57	impl->cbc_clear(priv, first, limit);
58	impl->cbc_wait(priv);
59}
60
61static int
62nvkm_ltc_zbc_color_get(struct nouveau_ltc *ltc, int index, const u32 color[4])
63{
64	const struct nvkm_ltc_impl *impl = (void *)nv_oclass(ltc);
65	struct nvkm_ltc_priv *priv = (void *)ltc;
66	memcpy(priv->zbc_color[index], color, sizeof(priv->zbc_color[index]));
67	impl->zbc_clear_color(priv, index, color);
68	return index;
69}
70
71static int
72nvkm_ltc_zbc_depth_get(struct nouveau_ltc *ltc, int index, const u32 depth)
73{
74	const struct nvkm_ltc_impl *impl = (void *)nv_oclass(ltc);
75	struct nvkm_ltc_priv *priv = (void *)ltc;
76	priv->zbc_depth[index] = depth;
77	impl->zbc_clear_depth(priv, index, depth);
78	return index;
79}
80
81int
82_nvkm_ltc_init(struct nouveau_object *object)
83{
84	const struct nvkm_ltc_impl *impl = (void *)nv_oclass(object);
85	struct nvkm_ltc_priv *priv = (void *)object;
86	int ret, i;
87
88	ret = nouveau_subdev_init(&priv->base.base);
89	if (ret)
90		return ret;
91
92	for (i = priv->base.zbc_min; i <= priv->base.zbc_max; i++) {
93		impl->zbc_clear_color(priv, i, priv->zbc_color[i]);
94		impl->zbc_clear_depth(priv, i, priv->zbc_depth[i]);
95	}
96
97	return 0;
98}
99
100int
101nvkm_ltc_create_(struct nouveau_object *parent, struct nouveau_object *engine,
102		 struct nouveau_oclass *oclass, int length, void **pobject)
103{
104	const struct nvkm_ltc_impl *impl = (void *)oclass;
105	struct nvkm_ltc_priv *priv;
106	int ret;
107
108	ret = nouveau_subdev_create_(parent, engine, oclass, 0, "PLTCG",
109				     "l2c", length, pobject);
110	priv = *pobject;
111	if (ret)
112		return ret;
113
114	memset(priv->zbc_color, 0x00, sizeof(priv->zbc_color));
115	memset(priv->zbc_depth, 0x00, sizeof(priv->zbc_depth));
116
117	priv->base.base.intr = impl->intr;
118	priv->base.tags_alloc = nvkm_ltc_tags_alloc;
119	priv->base.tags_free = nvkm_ltc_tags_free;
120	priv->base.tags_clear = nvkm_ltc_tags_clear;
121	priv->base.zbc_min = 1; /* reserve 0 for disabled */
122	priv->base.zbc_max = min(impl->zbc, NOUVEAU_LTC_MAX_ZBC_CNT) - 1;
123	priv->base.zbc_color_get = nvkm_ltc_zbc_color_get;
124	priv->base.zbc_depth_get = nvkm_ltc_zbc_depth_get;
125	return 0;
126}
127