1/*
2 * Copyright (C) 2019 Alyssa Rosenzweig
3 * Copyright (C) 2014-2017 Broadcom
4 *
5 * Permission is hereby granted, free of charge, to any person obtaining a
6 * copy of this software and associated documentation files (the "Software"),
7 * to deal in the Software without restriction, including without limitation
8 * the rights to use, copy, modify, merge, publish, distribute, sublicense,
9 * and/or sell copies of the Software, and to permit persons to whom the
10 * Software is furnished to do so, subject to the following conditions:
11 *
12 * The above copyright notice and this permission notice (including the next
13 * paragraph) shall be included in all copies or substantial portions of the
14 * 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 AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
20 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
21 * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
22 * SOFTWARE.
23 *
24 */
25
26#include "pan_context.h"
27#include "util/hash_table.h"
28#include "util/ralloc.h"
29
30struct panfrost_job *
31panfrost_create_job(struct panfrost_context *ctx)
32{
33        /* TODO: Don't leak */
34        struct panfrost_job *job = rzalloc(NULL, struct panfrost_job);
35
36        job->ctx = ctx;
37
38        job->bos = _mesa_set_create(job,
39                                    _mesa_hash_pointer,
40                                    _mesa_key_pointer_equal);
41
42        return job;
43}
44
45void
46panfrost_free_job(struct panfrost_context *ctx, struct panfrost_job *job)
47{
48        if (!job)
49                return;
50
51        set_foreach(job->bos, entry) {
52                struct panfrost_bo *bo = (struct panfrost_bo *)entry->key;
53                panfrost_bo_unreference(ctx->base.screen, bo);
54        }
55
56        _mesa_hash_table_remove_key(ctx->jobs, &job->key);
57
58        if (ctx->job == job)
59                ctx->job = NULL;
60
61        ralloc_free(job);
62}
63
64struct panfrost_job *
65panfrost_get_job(struct panfrost_context *ctx,
66                struct pipe_surface **cbufs, struct pipe_surface *zsbuf)
67{
68        /* Lookup the job first */
69
70        struct panfrost_job_key key = {
71                .cbufs = {
72                        cbufs[0],
73                        cbufs[1],
74                        cbufs[2],
75                        cbufs[3],
76                },
77                .zsbuf = zsbuf
78        };
79
80        struct hash_entry *entry = _mesa_hash_table_search(ctx->jobs, &key);
81
82        if (entry)
83                return entry->data;
84
85        /* Otherwise, let's create a job */
86
87        struct panfrost_job *job = panfrost_create_job(ctx);
88
89        /* Save the created job */
90
91        memcpy(&job->key, &key, sizeof(key));
92        _mesa_hash_table_insert(ctx->jobs, &job->key, job);
93
94        return job;
95}
96
97/* Get the job corresponding to the FBO we're currently rendering into */
98
99struct panfrost_job *
100panfrost_get_job_for_fbo(struct panfrost_context *ctx)
101{
102        /* If we already began rendering, use that */
103
104        if (ctx->job)
105                return ctx->job;
106
107        /* If not, look up the job */
108
109        struct pipe_surface **cbufs = ctx->pipe_framebuffer.cbufs;
110        struct pipe_surface *zsbuf = ctx->pipe_framebuffer.zsbuf;
111        struct panfrost_job *job = panfrost_get_job(ctx, cbufs, zsbuf);
112
113        return job;
114}
115
116void
117panfrost_job_add_bo(struct panfrost_job *job, struct panfrost_bo *bo)
118{
119        if (!bo)
120                return;
121
122        if (_mesa_set_search(job->bos, bo))
123                return;
124
125        panfrost_bo_reference(bo);
126        _mesa_set_add(job->bos, bo);
127}
128
129void
130panfrost_flush_jobs_writing_resource(struct panfrost_context *panfrost,
131                                struct pipe_resource *prsc)
132{
133#if 0
134        struct hash_entry *entry = _mesa_hash_table_search(panfrost->write_jobs,
135                                                           prsc);
136        if (entry) {
137                struct panfrost_job *job = entry->data;
138                panfrost_job_submit(panfrost, job);
139        }
140#endif
141        /* TODO stub */
142}
143
144void
145panfrost_flush_jobs_reading_resource(struct panfrost_context *panfrost,
146                                struct pipe_resource *prsc)
147{
148        struct panfrost_resource *rsc = pan_resource(prsc);
149
150        panfrost_flush_jobs_writing_resource(panfrost, prsc);
151
152        hash_table_foreach(panfrost->jobs, entry) {
153                struct panfrost_job *job = entry->data;
154
155                if (_mesa_set_search(job->bos, rsc->bo)) {
156                        printf("TODO: submit job for flush\n");
157                        //panfrost_job_submit(panfrost, job);
158                        continue;
159                }
160        }
161}
162
163static bool
164panfrost_job_compare(const void *a, const void *b)
165{
166        return memcmp(a, b, sizeof(struct panfrost_job_key)) == 0;
167}
168
169static uint32_t
170panfrost_job_hash(const void *key)
171{
172        return _mesa_hash_data(key, sizeof(struct panfrost_job_key));
173}
174
175void
176panfrost_job_init(struct panfrost_context *ctx)
177{
178        /* TODO: Don't leak */
179        ctx->jobs = _mesa_hash_table_create(NULL,
180                                            panfrost_job_hash,
181                                            panfrost_job_compare);
182
183        ctx->write_jobs = _mesa_hash_table_create(NULL,
184                                            _mesa_hash_pointer,
185                                            _mesa_key_pointer_equal);
186
187}
188