fd3_query.c revision 7297bdbd50eb039878fe9e472dc736e1259710fb 
1/* -*- mode: C; c-file-style: "k&r"; tab-width 4; indent-tabs-mode: t; -*- */
2
3/*
4 * Copyright (C) 2014 Rob Clark <robclark@freedesktop.org>
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 (including the next
14 * paragraph) shall be included in all copies or substantial portions of the
15 * Software.
16 *
17 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
18 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
19 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
20 * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
21 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
22 * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
23 * SOFTWARE.
24 *
25 * Authors:
26 *    Rob Clark <robclark@freedesktop.org>
27 */
28
29#include "freedreno_query_hw.h"
30#include "freedreno_context.h"
31#include "freedreno_util.h"
32
33#include "fd3_query.h"
34#include "fd3_util.h"
35
36
37struct fd_rb_samp_ctrs {
38	uint64_t ctr[16];
39};
40
41/*
42 * Occlusion Query:
43 *
44 * OCCLUSION_COUNTER and OCCLUSION_PREDICATE differ only in how they
45 * interpret results
46 */
47
48static struct fd_hw_sample *
49occlusion_get_sample(struct fd_context *ctx, struct fd_ringbuffer *ring)
50{
51	struct fd_hw_sample *samp =
52			fd_hw_sample_init(ctx, sizeof(struct fd_rb_samp_ctrs));
53
54	/* Set RB_SAMPLE_COUNT_ADDR to samp->offset plus value of
55	 * HW_QUERY_BASE_REG register:
56	 */
57	OUT_PKT3(ring, CP_SET_CONSTANT, 3);
58	OUT_RING(ring, CP_REG(REG_A3XX_RB_SAMPLE_COUNT_ADDR) | 0x80000000);
59	OUT_RING(ring, HW_QUERY_BASE_REG);
60	OUT_RING(ring, samp->offset);
61
62	OUT_PKT0(ring, REG_A3XX_RB_SAMPLE_COUNT_CONTROL, 1);
63	OUT_RING(ring, A3XX_RB_SAMPLE_COUNT_CONTROL_COPY);
64
65	OUT_PKT3(ring, CP_DRAW_INDX, 3);
66	OUT_RING(ring, 0x00000000);
67	OUT_RING(ring, DRAW(DI_PT_POINTLIST_A2XX, DI_SRC_SEL_AUTO_INDEX,
68			INDEX_SIZE_IGN, USE_VISIBILITY));
69	OUT_RING(ring, 0);             /* NumIndices */
70
71	fd_event_write(ctx, ring, ZPASS_DONE);
72
73	OUT_PKT0(ring, REG_A3XX_RBBM_PERFCTR_CTL, 1);
74	OUT_RING(ring, A3XX_RBBM_PERFCTR_CTL_ENABLE);
75
76	OUT_PKT0(ring, REG_A3XX_VBIF_PERF_CNT_EN, 1);
77	OUT_RING(ring, A3XX_VBIF_PERF_CNT_EN_CNT0 |
78			A3XX_VBIF_PERF_CNT_EN_CNT1 |
79			A3XX_VBIF_PERF_CNT_EN_PWRCNT0 |
80			A3XX_VBIF_PERF_CNT_EN_PWRCNT1 |
81			A3XX_VBIF_PERF_CNT_EN_PWRCNT2);
82
83	return samp;
84}
85
86static uint64_t
87count_samples(const struct fd_rb_samp_ctrs *start,
88		const struct fd_rb_samp_ctrs *end)
89{
90	uint64_t n = 0;
91	unsigned i;
92
93	/* not quite sure what all of these are, possibly different
94	 * counters for each MRT render target:
95	 */
96	for (i = 0; i < 16; i += 4)
97		n += end->ctr[i] - start->ctr[i];
98
99	return n;
100}
101
102static void
103occlusion_counter_accumulate_result(struct fd_context *ctx,
104		const void *start, const void *end,
105		union pipe_query_result *result)
106{
107	uint64_t n = count_samples(start, end);
108	result->u64 += n;
109}
110
111static void
112occlusion_predicate_accumulate_result(struct fd_context *ctx,
113		const void *start, const void *end,
114		union pipe_query_result *result)
115{
116	uint64_t n = count_samples(start, end);
117	result->b |= (n > 0);
118}
119
120static const struct fd_hw_sample_provider occlusion_counter = {
121		.query_type = PIPE_QUERY_OCCLUSION_COUNTER,
122		.active = FD_STAGE_DRAW,
123		.get_sample = occlusion_get_sample,
124		.accumulate_result = occlusion_counter_accumulate_result,
125};
126
127static const struct fd_hw_sample_provider occlusion_predicate = {
128		.query_type = PIPE_QUERY_OCCLUSION_PREDICATE,
129		.active = FD_STAGE_DRAW,
130		.get_sample = occlusion_get_sample,
131		.accumulate_result = occlusion_predicate_accumulate_result,
132};
133
134void fd3_query_context_init(struct pipe_context *pctx)
135{
136	fd_hw_query_register_provider(pctx, &occlusion_counter);
137	fd_hw_query_register_provider(pctx, &occlusion_predicate);
138}
139