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_format.h"
35
36
37 struct 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
48 static struct fd_hw_sample *
occlusion_get_sample(struct fd_batch * batch,struct fd_ringbuffer * ring)49 occlusion_get_sample(struct fd_batch *batch, struct fd_ringbuffer *ring)
50 {
51 struct fd_hw_sample *samp =
52 fd_hw_sample_init(batch, 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_PSIZE, DI_SRC_SEL_AUTO_INDEX,
68 INDEX_SIZE_IGN, USE_VISIBILITY, 0));
69 OUT_RING(ring, 0); /* NumIndices */
70
71 fd_event_write(batch, 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
86 static uint64_t
count_samples(const struct fd_rb_samp_ctrs * start,const struct fd_rb_samp_ctrs * end)87 count_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
102 static void
occlusion_counter_accumulate_result(struct fd_context * ctx,const void * start,const void * end,union pipe_query_result * result)103 occlusion_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
111 static void
occlusion_predicate_accumulate_result(struct fd_context * ctx,const void * start,const void * end,union pipe_query_result * result)112 occlusion_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
120 static 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
127 static 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
134 static const struct fd_hw_sample_provider occlusion_predicate_conservative = {
135 .query_type = PIPE_QUERY_OCCLUSION_PREDICATE_CONSERVATIVE,
136 .active = FD_STAGE_DRAW,
137 .get_sample = occlusion_get_sample,
138 .accumulate_result = occlusion_predicate_accumulate_result,
139 };
140
fd3_query_context_init(struct pipe_context * pctx)141 void fd3_query_context_init(struct pipe_context *pctx)
142 {
143 struct fd_context *ctx = fd_context(pctx);
144
145 ctx->create_query = fd_hw_create_query;
146 ctx->query_prepare = fd_hw_query_prepare;
147 ctx->query_prepare_tile = fd_hw_query_prepare_tile;
148 ctx->query_set_stage = fd_hw_query_set_stage;
149
150 fd_hw_query_register_provider(pctx, &occlusion_counter);
151 fd_hw_query_register_provider(pctx, &occlusion_predicate);
152 fd_hw_query_register_provider(pctx, &occlusion_predicate_conservative);
153 }
154