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      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 
     32 struct driver_name_map {
     33     const char *key;
     34     int         key_len;
     35     const char *name;
     36 };
     37 
     38 static 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 */
     46 VAStatus
     47 VA_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