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_drmcommon.h"
30#include "va_drm_auth.h"
31#include "va_drm_utils.h"
32
33static int
34va_DisplayContextIsValid(VADisplayContextP pDisplayContext)
35{
36    VADriverContextP const pDriverContext = pDisplayContext->pDriverContext;
37
38    return (pDriverContext &&
39            pDriverContext->display_type == VA_DISPLAY_DRM);
40}
41
42static void
43va_DisplayContextDestroy(VADisplayContextP pDisplayContext)
44{
45    if (!pDisplayContext)
46        return;
47
48    free(pDisplayContext->pDriverContext->drm_state);
49    free(pDisplayContext->pDriverContext);
50    free(pDisplayContext);
51}
52
53static VAStatus
54va_DisplayContextGetDriverName(
55    VADisplayContextP pDisplayContext,
56    char            **driver_name_ptr
57)
58{
59
60    VADriverContextP const ctx = pDisplayContext->pDriverContext;
61    struct drm_state * const drm_state = ctx->drm_state;
62    drm_magic_t magic;
63    VAStatus status;
64    int ret;
65
66    status = VA_DRM_GetDriverName(ctx, driver_name_ptr);
67    if (status != VA_STATUS_SUCCESS)
68        return status;
69
70    ret = drmGetMagic(drm_state->fd, &magic);
71    if (ret < 0)
72        return VA_STATUS_ERROR_OPERATION_FAILED;
73
74    if (!va_drm_is_authenticated(drm_state->fd)) {
75        if (!va_drm_authenticate(drm_state->fd, magic))
76            return VA_STATUS_ERROR_OPERATION_FAILED;
77        if (!va_drm_is_authenticated(drm_state->fd))
78            return VA_STATUS_ERROR_OPERATION_FAILED;
79    }
80
81    drm_state->auth_type = VA_DRM_AUTH_CUSTOM;
82
83    return VA_STATUS_SUCCESS;
84}
85
86VADisplay
87vaGetDisplayDRM(int fd)
88{
89    VADisplayContextP pDisplayContext = NULL;
90    VADriverContextP  pDriverContext  = NULL;
91    struct drm_state *drm_state       = NULL;
92
93    if (fd < 0)
94        return NULL;
95
96    /* Create new entry */
97    /* XXX: handle cache? */
98    drm_state = calloc(1, sizeof(*drm_state));
99    if (!drm_state)
100        goto error;
101    drm_state->fd = fd;
102
103    pDriverContext = calloc(1, sizeof(*pDriverContext));
104    if (!pDriverContext)
105        goto error;
106    pDriverContext->native_dpy   = NULL;
107    pDriverContext->display_type = VA_DISPLAY_DRM;
108    pDriverContext->drm_state    = drm_state;
109
110    pDisplayContext = calloc(1, sizeof(*pDisplayContext));
111    if (!pDisplayContext)
112        goto error;
113
114    pDisplayContext->vadpy_magic     = VA_DISPLAY_MAGIC;
115    pDisplayContext->pDriverContext  = pDriverContext;
116    pDisplayContext->vaIsValid       = va_DisplayContextIsValid;
117    pDisplayContext->vaDestroy       = va_DisplayContextDestroy;
118    pDisplayContext->vaGetDriverName = va_DisplayContextGetDriverName;
119    return pDisplayContext;
120
121error:
122    free(pDisplayContext);
123    free(pDriverContext);
124    free(drm_state);
125    return NULL;
126}
127