src/gallium/winsys/kmsro/drm/kmsro_drm_winsys.c

   1 /*
   2  * Copyright (C) 2016 Christian Gmeiner <christian.gmeiner@gmail.com>
   3  * Copyright (C) 2017 Broadcom
   4  *
   5  * Permission is hereby granted, free of charge, to any person obtaining a
   6  * copy of this software and associated documentation files (the "Software"),
   7  * to deal in the Software without restriction, including without limitation
   8  * the rights to use, copy, modify, merge, publish, distribute, sublicense,
   9  * and/or sell copies of the Software, and to permit persons to whom the
  10  * Software is furnished to do so, subject to the following conditions:
  11  *
  12  * The above copyright notice and this permission notice (including the next
  13  * paragraph) shall be included in all copies or substantial portions of the
  14  * Software.
  15  *
  16  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
  17  * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
  18  * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
  19  * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
  20  * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
  21  * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
  22  * SOFTWARE.
  23  */
  24
  25 #include <fcntl.h>
  26 #include <unistd.h>
  27
  28 #include "kmsro_drm_public.h"
  29 #include "vc4/drm/vc4_drm_public.h"
  30 #include "etnaviv/drm/etnaviv_drm_public.h"
  31 #include "freedreno/drm/freedreno_drm_public.h"
  32 #include "xf86drm.h"
  33
  34 #include "pipe/p_screen.h"
  35 #include "renderonly/renderonly.h"
  36
  37 struct pipe_screen *kmsro_drm_screen_create(int fd)
  38 {
  39    struct pipe_screen *screen = NULL;
  40    struct renderonly ro = {
  41       .kms_fd = fd,
  42       .gpu_fd = -1,
  43    };
  44
  45 #if defined(GALLIUM_VC4)
  46    ro.gpu_fd = drmOpenWithType("vc4", NULL, DRM_NODE_RENDER);
  47    if (ro.gpu_fd >= 0) {
  48       /* Passes the vc4-allocated BO through to the KMS-only DRM device using
  49        * PRIME buffer sharing.  The VC4 BO must be linear, which the SCANOUT
  50        * flag on allocation will have ensured.
  51        */
  52       ro.create_for_resource = renderonly_create_gpu_import_for_resource,
  53       screen = vc4_drm_screen_create_renderonly(&ro);
  54       if (!screen)
  55          close(ro.gpu_fd);
  56
  57       return screen;
  58    }
  59 #endif
  60
  61 #if defined(GALLIUM_ETNAVIV)
  62    ro.gpu_fd = drmOpenWithType("etnaviv", NULL, DRM_NODE_RENDER);
  63    if (ro.gpu_fd >= 0) {
  64       ro.create_for_resource = renderonly_create_kms_dumb_buffer_for_resource,
  65       screen = etna_drm_screen_create_renderonly(&ro);
  66       if (!screen)
  67          close(ro.gpu_fd);
  68
  69       return screen;
  70    }
  71 #endif
  72
  73 #if defined(GALLIUM_FREEDRENO)
  74    ro.gpu_fd = drmOpenWithType("msm", NULL, DRM_NODE_RENDER);
  75    if (ro.gpu_fd >= 0) {
  76       ro.create_for_resource = renderonly_create_kms_dumb_buffer_for_resource,
  77       screen = fd_drm_screen_create(ro.gpu_fd, &ro);
  78       if (!screen)
  79          close(ro.gpu_fd);
  80
  81       return screen;
  82    }
  83 #endif
  84
  85    return screen;
  86 }