1 /*
2 * Copyright (c) 2012 Intel Corporation. All Rights Reserved.
3 * Copyright (c) 2023 Emil Velikov
4 *
5 * Permission is hereby granted, free of charge, to any person obtaining a
6 * copy of this software and associated documentation files (the
7 * "Software"), to deal in the Software without restriction, including
8 * without limitation the rights to use, copy, modify, merge, publish,
9 * distribute, sub license, and/or sell copies of the Software, and to
10 * permit persons to whom the Software is furnished to do so, subject to
11 * the following conditions:
12 *
13 * The above copyright notice and this permission notice (including the
14 * next paragraph) shall be included in all copies or substantial portions
15 * of the Software.
16 *
17 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
18 * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
19 * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT.
20 * IN NO EVENT SHALL PRECISION INSIGHT AND/OR ITS SUPPLIERS BE LIABLE FOR
21 * ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
22 * TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
23 * SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
24 */
25
26 #include "sysdeps.h"
27 #include <xf86drm.h>
28 #include "va_drm.h"
29 #include "va_backend.h"
30 #include "va_internal.h"
31 #include "va_drmcommon.h"
32 #include "va_drm_auth.h"
33 #include "va_drm_utils.h"
34
35 static void
va_DisplayContextDestroy(VADisplayContextP pDisplayContext)36 va_DisplayContextDestroy(VADisplayContextP pDisplayContext)
37 {
38 if (!pDisplayContext)
39 return;
40
41 free(pDisplayContext->pDriverContext->drm_state);
42 free(pDisplayContext->pDriverContext);
43 free(pDisplayContext);
44 }
45
46
va_DisplayContextConnect(VADisplayContextP pDisplayContext)47 static VAStatus va_DisplayContextConnect(
48 VADisplayContextP pDisplayContext
49 )
50 {
51 VADriverContextP const ctx = pDisplayContext->pDriverContext;
52 struct drm_state * const drm_state = ctx->drm_state;
53 drm_magic_t magic;
54 int ret;
55
56 /* Authentication is only needed for a legacy DRM device */
57 if (ctx->display_type != VA_DISPLAY_DRM_RENDERNODES) {
58 ret = drmGetMagic(drm_state->fd, &magic);
59 if (ret < 0)
60 return VA_STATUS_ERROR_OPERATION_FAILED;
61
62 if (!va_drm_authenticate(drm_state->fd, magic))
63 return VA_STATUS_ERROR_OPERATION_FAILED;
64 }
65
66 drm_state->auth_type = VA_DRM_AUTH_CUSTOM;
67 return VA_STATUS_SUCCESS;
68 }
69
70
71 static VAStatus
va_DisplayContextGetDriverNames(VADisplayContextP pDisplayContext,char ** drivers,unsigned * num_drivers)72 va_DisplayContextGetDriverNames(
73 VADisplayContextP pDisplayContext,
74 char **drivers,
75 unsigned *num_drivers
76 )
77 {
78 VADriverContextP const ctx = pDisplayContext->pDriverContext;
79 VAStatus status = va_DisplayContextConnect(pDisplayContext);
80 if (status != VA_STATUS_SUCCESS)
81 return status;
82
83 return VA_DRM_GetDriverNames(ctx, drivers, num_drivers);
84 }
85
86 VADisplay
vaGetDisplayDRM(int fd)87 vaGetDisplayDRM(int fd)
88 {
89 VADisplayContextP pDisplayContext = NULL;
90 VADriverContextP pDriverContext = NULL;
91 struct drm_state *drm_state = NULL;
92 int node_type;
93
94 if (fd < 0 || (node_type = drmGetNodeTypeFromFd(fd)) < 0)
95 return NULL;
96
97 /* Create new entry */
98 /* XXX: handle cache? */
99 drm_state = calloc(1, sizeof(*drm_state));
100 if (!drm_state)
101 goto error;
102 drm_state->fd = fd;
103
104 pDisplayContext = va_newDisplayContext();
105 if (!pDisplayContext)
106 goto error;
107
108 pDisplayContext->vaDestroy = va_DisplayContextDestroy;
109 pDisplayContext->vaGetDriverNames = va_DisplayContextGetDriverNames;
110
111 pDriverContext = va_newDriverContext(pDisplayContext);
112 if (!pDriverContext)
113 goto error;
114
115 pDriverContext->native_dpy = NULL;
116 pDriverContext->display_type = node_type == DRM_NODE_RENDER ?
117 VA_DISPLAY_DRM_RENDERNODES : VA_DISPLAY_DRM;
118 pDriverContext->drm_state = drm_state;
119
120 return pDisplayContext;
121
122 error:
123 free(pDisplayContext);
124 free(pDriverContext);
125 free(drm_state);
126 return NULL;
127 }
128