1/*
2 * va_drm_utils.c - VA/DRM Utilities
3 *
4 * Copyright (c) 2012 Intel Corporation. All Rights Reserved.
5 *
6 * Permission is hereby granted, free of charge, to any person obtaining a
7 * copy of this software and associated documentation files (the
8 * "Software"), to deal in the Software without restriction, including
9 * without limitation the rights to use, copy, modify, merge, publish,
10 * distribute, sub license, and/or sell copies of the Software, and to
11 * permit persons to whom the Software is furnished to do so, subject to
12 * the following conditions:
13 *
14 * The above copyright notice and this permission notice (including the
15 * next paragraph) shall be included in all copies or substantial portions
16 * of the Software.
17 *
18 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
19 * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
20 * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT.
21 * IN NO EVENT SHALL INTEL AND/OR ITS SUPPLIERS BE LIABLE FOR
22 * ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
23 * TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
24 * SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
25 */
26
27#include "sysdeps.h"
28#include <xf86drm.h>
29#include "va_drm_utils.h"
30#include "va_drmcommon.h"
31
32struct driver_name_map {
33    const char *key;
34    int         key_len;
35    const char *name;
36};
37
38static const struct driver_name_map g_driver_name_map[] = {
39    { "i915",       4, "i965"   }, // Intel OTC GenX driver
40    { "pvrsrvkm",   8, "pvr"    }, // Intel UMG PVR driver
41    { "emgd",       4, "emgd"   }, // Intel ECG PVR driver
42    { NULL, }
43};
44
45/* Returns the VA driver name for the active display */
46VAStatus
47VA_DRM_GetDriverName(VADriverContextP ctx, char **driver_name_ptr)
48{
49    struct drm_state * const drm_state = ctx->drm_state;
50    drmVersionPtr drm_version;
51    char *driver_name = NULL;
52    const struct driver_name_map *m;
53
54    *driver_name_ptr = NULL;
55
56    if (!drm_state || drm_state->fd < 0)
57        return VA_STATUS_ERROR_INVALID_DISPLAY;
58
59    drm_version = drmGetVersion(drm_state->fd);
60    if (!drm_version)
61        return VA_STATUS_ERROR_UNKNOWN;
62
63    for (m = g_driver_name_map; m->key != NULL; m++) {
64        if (drm_version->name_len >= m->key_len &&
65            strncmp(drm_version->name, m->key, m->key_len) == 0)
66            break;
67    }
68    drmFreeVersion(drm_version);
69
70    if (!m->name)
71        return VA_STATUS_ERROR_UNKNOWN;
72
73    driver_name = strdup(m->name);
74    if (!driver_name)
75        return VA_STATUS_ERROR_ALLOCATION_FAILED;
76
77    *driver_name_ptr = driver_name;
78    return VA_STATUS_SUCCESS;
79}
80