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      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 
     33 static int
     34 va_DisplayContextIsValid(VADisplayContextP pDisplayContext)
     35 {
     36     VADriverContextP const pDriverContext = pDisplayContext->pDriverContext;
     37 
     38     return (pDriverContext &&
     39             pDriverContext->display_type == VA_DISPLAY_DRM);
     40 }
     41 
     42 static void
     43 va_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 
     53 static VAStatus
     54 va_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 
     86 VADisplay
     87 vaGetDisplayDRM(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 
    121 error:
    122     free(pDisplayContext);
    123     free(pDriverContext);
    124     free(drm_state);
    125     return NULL;
    126 }
    127