1 /*
2 * Copyright © 2014 Broadcom
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 (including the next
12 * paragraph) shall be included in all copies or substantial portions of the
13 * Software.
14 *
15 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
16 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
17 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
18 * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
19 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
20 * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS
21 * IN THE SOFTWARE.
22 */
23
24 #include <unistd.h>
25 #include <fcntl.h>
26 #include <sys/ioctl.h>
27
28 #include "util/os_file.h"
29
30 #include "renderonly/renderonly.h"
31 #include "kmsro/drm/kmsro_drm_public.h"
32 #include "vc4_drm_public.h"
33 #include "vc4/vc4_screen.h"
34 #include "drm-uapi/vc4_drm.h"
35
36 struct pipe_screen *
vc4_drm_screen_create(int fd,const struct pipe_screen_config * config)37 vc4_drm_screen_create(int fd, const struct pipe_screen_config *config)
38 {
39 bool v3d_present = true;
40
41 #ifndef USE_VC4_SIMULATOR
42 struct drm_vc4_get_param ident0 = {
43 .param = DRM_VC4_PARAM_V3D_IDENT0,
44 };
45
46 int ret = ioctl(fd, DRM_IOCTL_VC4_GET_PARAM, &ident0);
47 v3d_present = ret == 0;
48 #endif
49
50 if (v3d_present)
51 return vc4_screen_create(os_dupfd_cloexec(fd), NULL);
52
53 #ifdef GALLIUM_KMSRO
54 return kmsro_drm_screen_create(fd, config);
55 #endif
56
57 return NULL;
58 }
59
60 struct pipe_screen *
vc4_drm_screen_create_renderonly(struct renderonly * ro,const struct pipe_screen_config * config)61 vc4_drm_screen_create_renderonly(struct renderonly *ro,
62 const struct pipe_screen_config *config)
63 {
64 return vc4_screen_create(ro->gpu_fd, ro);
65 }
66