nv50_query.c revision 41b52aa3362665e08bdc2f75cc9bfdc4debc6eb0 
1/*
2 * Copyright 2008 Ben Skeggs
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 AUTHORS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY,
18 * WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF
19 * OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
20 * SOFTWARE.
21 */
22
23#include "pipe/p_context.h"
24#include "pipe/p_inlines.h"
25
26#include "nv50_context.h"
27
28struct nv50_query {
29	struct nouveau_bo *bo;
30	unsigned type;
31	boolean ready;
32	uint64_t result;
33};
34
35static INLINE struct nv50_query *
36nv50_query(struct pipe_query *pipe)
37{
38	return (struct nv50_query *)pipe;
39}
40
41static struct pipe_query *
42nv50_query_create(struct pipe_context *pipe, unsigned type)
43{
44	struct nouveau_device *dev = nouveau_screen(pipe->screen)->device;
45	struct nv50_query *q = CALLOC_STRUCT(nv50_query);
46	int ret;
47
48	assert (q->type == PIPE_QUERY_OCCLUSION_COUNTER);
49	q->type = type;
50
51	ret = nouveau_bo_new(dev, NOUVEAU_BO_VRAM | NOUVEAU_BO_MAP, 256,
52			     16, &q->bo);
53	if (ret) {
54		FREE(q);
55		return NULL;
56	}
57
58	return (struct pipe_query *)q;
59}
60
61static void
62nv50_query_destroy(struct pipe_context *pipe, struct pipe_query *pq)
63{
64	struct nv50_query *q = nv50_query(pq);
65
66	if (q) {
67		nouveau_bo_ref(NULL, &q->bo);
68		FREE(q);
69	}
70}
71
72static void
73nv50_query_begin(struct pipe_context *pipe, struct pipe_query *pq)
74{
75	struct nv50_context *nv50 = nv50_context(pipe);
76	struct nouveau_channel *chan = nv50->screen->base.channel;
77	struct nouveau_grobj *tesla = nv50->screen->tesla;
78	struct nv50_query *q = nv50_query(pq);
79
80	BEGIN_RING(chan, tesla, 0x1530, 1);
81	OUT_RING  (chan, 1);
82	BEGIN_RING(chan, tesla, 0x1514, 1);
83	OUT_RING  (chan, 1);
84
85	q->ready = FALSE;
86}
87
88static void
89nv50_query_end(struct pipe_context *pipe, struct pipe_query *pq)
90{
91	struct nv50_context *nv50 = nv50_context(pipe);
92	struct nouveau_channel *chan = nv50->screen->base.channel;
93	struct nouveau_grobj *tesla = nv50->screen->tesla;
94	struct nv50_query *q = nv50_query(pq);
95
96	MARK_RING (chan, 5, 2); /* flush on lack of space or relocs */
97	BEGIN_RING(chan, tesla, NV50TCL_QUERY_ADDRESS_HIGH, 4);
98	OUT_RELOCh(chan, q->bo, 0, NOUVEAU_BO_VRAM | NOUVEAU_BO_WR);
99	OUT_RELOCl(chan, q->bo, 0, NOUVEAU_BO_VRAM | NOUVEAU_BO_WR);
100	OUT_RING  (chan, 0x00000000);
101	OUT_RING  (chan, 0x0100f002);
102	FIRE_RING (chan);
103}
104
105static boolean
106nv50_query_result(struct pipe_context *pipe, struct pipe_query *pq,
107		  boolean wait, uint64_t *result)
108{
109	struct nv50_query *q = nv50_query(pq);
110	int ret;
111
112	if (!q->ready) {
113		ret = nouveau_bo_map(q->bo, NOUVEAU_BO_RD |
114				     wait ? 0 : NOUVEAU_BO_NOWAIT);
115		if (ret)
116			return false;
117		q->result = ((uint32_t *)q->bo->map)[1];
118		q->ready = TRUE;
119		nouveau_bo_unmap(q->bo);
120	}
121
122	*result = q->result;
123	return q->ready;
124}
125
126void
127nv50_init_query_functions(struct nv50_context *nv50)
128{
129	nv50->pipe.create_query = nv50_query_create;
130	nv50->pipe.destroy_query = nv50_query_destroy;
131	nv50->pipe.begin_query = nv50_query_begin;
132	nv50->pipe.end_query = nv50_query_end;
133	nv50->pipe.get_query_result = nv50_query_result;
134}
135