1/*
2 * Copyright © 2018 NVIDIA Corporation
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 COPYRIGHT HOLDER(S) OR AUTHOR(S) BE LIABLE FOR ANY CLAIM, DAMAGES OR
18 * OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
19 * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
20 * OTHER DEALINGS IN THE SOFTWARE.
21 */
22
23#include <errno.h>
24#include <fcntl.h>
25#include <stdio.h>
26#include <string.h>
27#include <unistd.h>
28
29#include "tegra.h"
30
31#define ARRAY_SIZE(a) (sizeof(a) / sizeof((a)[0]))
32
33static int channel_open(struct drm_tegra *drm,
34                        struct drm_tegra_channel **channel)
35{
36    static const struct {
37        enum drm_tegra_class class;
38        const char *name;
39    } classes[] = {
40        { DRM_TEGRA_VIC,  "VIC"  },
41        { DRM_TEGRA_GR2D, "GR2D" },
42    };
43    unsigned int i;
44    int err;
45
46    for (i = 0; i < ARRAY_SIZE(classes); i++) {
47        err = drm_tegra_channel_open(drm, classes[i].class, channel);
48        if (err < 0) {
49            fprintf(stderr, "failed to open channel to %s: %s\n",
50                    classes[i].name, strerror(-err));
51            continue;
52        }
53
54        break;
55    }
56
57    return err;
58}
59
60int main(int argc, char *argv[])
61{
62    const char *device = "/dev/dri/renderD128";
63    struct drm_tegra_syncpoint *syncpt;
64    struct drm_tegra_channel *channel;
65    struct drm_tegra_pushbuf *pushbuf;
66    struct drm_tegra_job *job;
67    struct drm_tegra *drm;
68    uint32_t *ptr;
69    int fd, err;
70
71    if (argc > 1)
72        device = argv[1];
73
74    fd = open(device, O_RDWR);
75    if (fd < 0) {
76        fprintf(stderr, "open() failed: %s\n", strerror(errno));
77        return 1;
78    }
79
80    err = drm_tegra_new(fd, &drm);
81    if (err < 0) {
82        fprintf(stderr, "failed to open Tegra device: %s\n", strerror(-err));
83        close(fd);
84        return 1;
85    }
86
87    err = drm_tegra_syncpoint_new(drm, &syncpt);
88    if (err < 0) {
89        fprintf(stderr, "failed to allocate syncpoint: %s\n", strerror(-err));
90        drm_tegra_close(drm);
91        close(fd);
92        return 1;
93    }
94
95    err = channel_open(drm, &channel);
96    if (err < 0) {
97        fprintf(stderr, "failed to open channel: %s\n", strerror(-err));
98        return 1;
99    }
100
101    err = drm_tegra_job_new(channel, &job);
102    if (err < 0) {
103        fprintf(stderr, "failed to create job: %s\n", strerror(-err));
104        return 1;
105    }
106
107    err = drm_tegra_job_get_pushbuf(job, &pushbuf);
108    if (err < 0) {
109        fprintf(stderr, "failed to create push buffer: %s\n", strerror(-err));
110        return 1;
111    }
112
113    err = drm_tegra_pushbuf_begin(pushbuf, 4, &ptr);
114    if (err < 0) {
115        fprintf(stderr, "failed to prepare push buffer: %s\n", strerror(-err));
116        return 1;
117    }
118
119    err = drm_tegra_pushbuf_sync_cond(pushbuf, &ptr, syncpt,
120                                      DRM_TEGRA_SYNC_COND_IMMEDIATE);
121    if (err < 0) {
122        fprintf(stderr, "failed to push syncpoint: %s\n", strerror(-err));
123        return 1;
124    }
125
126    err = drm_tegra_pushbuf_end(pushbuf, ptr);
127    if (err < 0) {
128        fprintf(stderr, "failed to update push buffer: %s\n", strerror(-err));
129        return 1;
130    }
131
132    err = drm_tegra_job_submit(job, NULL);
133    if (err < 0) {
134        fprintf(stderr, "failed to submit job: %s\n", strerror(-err));
135        return 1;
136    }
137
138    err = drm_tegra_job_wait(job, 250000000);
139    if (err < 0) {
140        fprintf(stderr, "failed to wait for job: %s\n", strerror(-err));
141        return 1;
142    }
143
144    drm_tegra_job_free(job);
145    drm_tegra_channel_close(channel);
146    drm_tegra_syncpoint_free(syncpt);
147    drm_tegra_close(drm);
148    close(fd);
149
150    return 0;
151}
152