xref: /third_party/libdrm/tegra/job.c (revision d722e3fb) 
1/*
2 * Copyright © 2012, 2013 Thierry Reding
3 * Copyright © 2013 Erik Faye-Lund
4 * Copyright © 2014 NVIDIA Corporation
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 shall be included in
14 * all copies or substantial portions of the 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 COPYRIGHT HOLDER(S) OR AUTHOR(S) BE LIABLE FOR ANY CLAIM, DAMAGES OR
20 * OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
21 * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
22 * OTHER DEALINGS IN THE SOFTWARE.
23 */
24
25#ifdef HAVE_CONFIG_H
26#  include "config.h"
27#endif
28
29#include <errno.h>
30#include <stdlib.h>
31#include <string.h>
32#include <time.h>
33#include <unistd.h>
34
35#include <sys/ioctl.h>
36#include <sys/poll.h>
37
38#include "private.h"
39
40struct drm_tegra_submit_cmd *
41drm_tegra_job_add_command(struct drm_tegra_job *job, uint32_t type,
42                          uint32_t flags)
43{
44    struct drm_tegra_submit_cmd *commands, *command;
45    size_t size;
46
47    size = (job->num_commands + 1) * sizeof(*commands);
48
49    commands = realloc(job->commands, size);
50    if (!commands)
51        return NULL;
52
53    command = &commands[job->num_commands];
54    memset(command, 0, sizeof(*command));
55    command->type = type;
56    command->flags = flags;
57
58    job->commands = commands;
59    job->num_commands++;
60
61    return command;
62}
63
64drm_public int
65drm_tegra_job_new(struct drm_tegra_channel *channel,
66                  struct drm_tegra_job **jobp)
67{
68    struct drm_tegra_job *job;
69
70    job = calloc(1, sizeof(*job));
71    if (!job)
72        return -ENOMEM;
73
74    job->page_size = sysconf(_SC_PAGESIZE);
75    job->channel = channel;
76
77    *jobp = job;
78
79    return 0;
80}
81
82drm_public int drm_tegra_job_free(struct drm_tegra_job *job)
83{
84    if (!job)
85        return -EINVAL;
86
87    if (job->pushbuf)
88        drm_tegra_pushbuf_free(job->pushbuf);
89
90    if (job->commands)
91        free(job->commands);
92
93    if (job->buffers)
94        free(job->buffers);
95
96    free(job);
97
98    return 0;
99}
100
101drm_public int
102drm_tegra_job_get_pushbuf(struct drm_tegra_job *job,
103                          struct drm_tegra_pushbuf **pushbufp)
104{
105    struct drm_tegra_pushbuf *pushbuf;
106
107    if (!job->pushbuf) {
108        pushbuf = calloc(1, sizeof(*pushbuf));
109        if (!pushbuf)
110            return -ENOMEM;
111
112        pushbuf->job = job;
113
114        pushbuf->start = calloc(1, job->page_size);
115        if (!pushbuf->start) {
116            free(pushbuf);
117            return -ENOMEM;
118        }
119
120        pushbuf->end = pushbuf->start + job->page_size / 4;
121        pushbuf->ptr = pushbuf->start;
122
123        job->pushbuf = pushbuf;
124    }
125
126    *pushbufp = job->pushbuf;
127
128    return 0;
129}
130
131drm_public int
132drm_tegra_job_submit(struct drm_tegra_job *job, struct drm_tegra_fence *fence)
133{
134    struct drm_tegra_channel *channel = job->channel;
135    struct drm_tegra *drm = channel->drm;
136    struct drm_tegra_channel_submit args;
137    int err;
138
139    memset(&args, 0, sizeof(args));
140    args.context = channel->context;
141    args.num_bufs = job->num_buffers;
142    args.num_cmds = job->num_commands;
143    args.gather_data_words = job->pushbuf->ptr - job->pushbuf->start;
144    args.syncpt.id = job->syncpt.id;
145    args.syncpt.increments = job->syncpt.increments;
146
147    args.bufs_ptr = (uintptr_t)job->buffers;
148    args.cmds_ptr = (uintptr_t)job->commands;
149    args.gather_data_ptr = (uintptr_t)job->pushbuf->start;
150
151    err = ioctl(drm->fd, DRM_IOCTL_TEGRA_CHANNEL_SUBMIT, &args);
152    if (err < 0)
153        return -errno;
154
155    job->syncpt.fence = args.syncpt.value;
156
157    if (fence) {
158        fence->drm = drm;
159        fence->syncpt = job->syncpt.id;
160        fence->value = job->syncpt.fence;
161    }
162
163    return 0;
164}
165
166drm_public int
167drm_tegra_job_wait(struct drm_tegra_job *job, unsigned long timeout)
168{
169    struct drm_tegra_channel *channel = job->channel;
170    struct drm_tegra *drm = channel->drm;
171    struct drm_tegra_syncpoint_wait args;
172    struct timespec ts;
173    int err;
174
175    clock_gettime(CLOCK_MONOTONIC, &ts);
176
177    memset(&args, 0, sizeof(args));
178    args.timeout_ns = ts.tv_sec * 1000000000 + ts.tv_nsec + timeout;
179    args.id = job->syncpt.id;
180    args.threshold = job->syncpt.fence;
181
182    err = ioctl(drm->fd, DRM_IOCTL_TEGRA_SYNCPOINT_WAIT, &args);
183    if (err < 0)
184        return -errno;
185
186    return 0;
187}
188