1 /*
2 * Copyright (c) 2012 Intel Corporation. All Rights Reserved.
3 *
4 * Permission is hereby granted, free of charge, to any person obtaining a
5 * copy of this software and associated documentation files (the
6 * "Software"), to deal in the Software without restriction, including
7 * without limitation the rights to use, copy, modify, merge, publish,
8 * distribute, sub license, and/or sell copies of the Software, and to
9 * permit persons to whom the Software is furnished to do so, subject to
10 * the following conditions:
11 *
12 * The above copyright notice and this permission notice (including the
13 * next paragraph) shall be included in all copies or substantial portions
14 * of the Software.
15 *
16 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
17 * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
18 * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT.
19 * IN NO EVENT SHALL PRECISION INSIGHT AND/OR ITS SUPPLIERS BE LIABLE FOR
20 * ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
21 * TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
22 * SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
23 */
24
25 #include "sysdeps.h"
26 #include <xf86drm.h>
27 #include "va_drm.h"
28 #include "va_backend.h"
29 #include "va_internal.h"
30 #include "va_drmcommon.h"
31 #include "va_drm_auth.h"
32 #include "va_drm_utils.h"
33
34 static int
va_DisplayContextIsValid(VADisplayContextP pDisplayContext)35 va_DisplayContextIsValid(VADisplayContextP pDisplayContext)
36 {
37 VADriverContextP const pDriverContext = pDisplayContext->pDriverContext;
38
39 return (pDriverContext &&
40 ((pDriverContext->display_type & VA_DISPLAY_MAJOR_MASK) ==
41 VA_DISPLAY_DRM));
42 }
43
44 static void
va_DisplayContextDestroy(VADisplayContextP pDisplayContext)45 va_DisplayContextDestroy(VADisplayContextP pDisplayContext)
46 {
47 if (!pDisplayContext)
48 return;
49
50 free(pDisplayContext->pDriverContext->drm_state);
51 free(pDisplayContext->pDriverContext);
52 free(pDisplayContext);
53 }
va_DisplayContextGetNumCandidates(VADisplayContextP pDisplayContext,int * num_candidates)54 static VAStatus va_DisplayContextGetNumCandidates(
55 VADisplayContextP pDisplayContext,
56 int *num_candidates
57 )
58 {
59 VADriverContextP const ctx = pDisplayContext->pDriverContext;
60 struct drm_state * const drm_state = ctx->drm_state;
61 VAStatus status = VA_STATUS_SUCCESS;
62 drm_magic_t magic;
63 int ret;
64 status = VA_DRM_GetNumCandidates(ctx, num_candidates);
65 if (status != VA_STATUS_SUCCESS)
66 return status;
67 /* Authentication is only needed for a legacy DRM device */
68 if (ctx->display_type != VA_DISPLAY_DRM_RENDERNODES) {
69 ret = drmGetMagic(drm_state->fd, &magic);
70 if (ret < 0)
71 return VA_STATUS_ERROR_OPERATION_FAILED;
72
73 if (!va_drm_authenticate(drm_state->fd, magic))
74 return VA_STATUS_ERROR_OPERATION_FAILED;
75 }
76
77 drm_state->auth_type = VA_DRM_AUTH_CUSTOM;
78 return VA_STATUS_SUCCESS;
79 }
80
81 static VAStatus
va_DisplayContextGetDriverNameByIndex(VADisplayContextP pDisplayContext,char ** driver_name_ptr,int candidate_index)82 va_DisplayContextGetDriverNameByIndex(
83 VADisplayContextP pDisplayContext,
84 char **driver_name_ptr,
85 int candidate_index
86 )
87 {
88
89 VADriverContextP const ctx = pDisplayContext->pDriverContext;
90
91 return VA_DRM_GetDriverName(ctx, driver_name_ptr, candidate_index);
92 }
93
94 VADisplay
vaGetDisplayDRM(int fd)95 vaGetDisplayDRM(int fd)
96 {
97 VADisplayContextP pDisplayContext = NULL;
98 VADriverContextP pDriverContext = NULL;
99 struct drm_state *drm_state = NULL;
100 int is_render_nodes;
101
102 if (fd < 0 || (is_render_nodes = VA_DRM_IsRenderNodeFd(fd)) < 0)
103 return NULL;
104
105 /* Create new entry */
106 /* XXX: handle cache? */
107 drm_state = calloc(1, sizeof(*drm_state));
108 if (!drm_state)
109 goto error;
110 drm_state->fd = fd;
111
112 pDisplayContext = va_newDisplayContext();
113 if (!pDisplayContext)
114 goto error;
115
116 pDisplayContext->vaIsValid = va_DisplayContextIsValid;
117 pDisplayContext->vaDestroy = va_DisplayContextDestroy;
118 pDisplayContext->vaGetNumCandidates = va_DisplayContextGetNumCandidates;
119 pDisplayContext->vaGetDriverNameByIndex = va_DisplayContextGetDriverNameByIndex;
120
121 pDriverContext = va_newDriverContext(pDisplayContext);
122 if (!pDriverContext)
123 goto error;
124
125 pDriverContext->native_dpy = NULL;
126 pDriverContext->display_type = is_render_nodes ?
127 VA_DISPLAY_DRM_RENDERNODES : VA_DISPLAY_DRM;
128 pDriverContext->drm_state = drm_state;
129
130 return pDisplayContext;
131
132 error:
133 free(pDisplayContext);
134 free(pDriverContext);
135 free(drm_state);
136 return NULL;
137 }
138