src/gallium/winsys/drm/radeon/core/radeon_drm.c

   1 /*
   2  * Copyright © 2009 Corbin Simpson
   3  * All Rights Reserved.
   4  *
   5  * Permission is hereby granted, free of charge, to any person obtaining
   6  * a copy of this software and associated documentation files (the
   7  * "Software"), to deal in the Software without restriction, including
   8  * without limitation the rights to use, copy, modify, merge, publish,
   9  * distribute, sub license, and/or sell copies of the Software, and to
  10  * permit persons to whom the Software is furnished to do so, subject to
  11  * the following conditions:
  12  *
  13  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
  14  * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES
  15  * OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
  16  * NON-INFRINGEMENT. IN NO EVENT SHALL THE COPYRIGHT HOLDERS, AUTHORS
  17  * AND/OR ITS SUPPLIERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
  18  * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
  19  * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE
  20  * USE OR OTHER DEALINGS IN THE SOFTWARE.
  21  *
  22  * The above copyright notice and this permission notice (including the
  23  * next paragraph) shall be included in all copies or substantial portions
  24  * of the Software.
  25  */
  26 /*
  27  * Authors:
  28  *      Corbin Simpson <MostAwesomeDude@gmail.com>
  29  */
  30
  31 #include "radeon_drm.h"
  32
  33 /* Create a pipe_screen. */
  34 struct pipe_screen* radeon_create_screen(struct drm_api* api,
  35                                          int drmFB,
  36                      struct drm_create_screen_arg *arg)
  37 {
  38     struct radeon_winsys* winsys = radeon_pipe_winsys(drmFB);
  39
  40     if (getenv("RADEON_SOFTPIPE")) {
  41         return softpipe_create_screen((struct pipe_winsys*)winsys);
  42     } else {
  43         struct r300_winsys* r300 = radeon_create_r300_winsys(drmFB, winsys);
  44         FREE(winsys);
  45         return r300_create_screen(r300);
  46     }
  47 }
  48
  49 /* Create a pipe_context. */
  50 struct pipe_context* radeon_create_context(struct drm_api* api,
  51                                            struct pipe_screen* screen)
  52 {
  53     if (getenv("RADEON_SOFTPIPE")) {
  54         return radeon_create_softpipe(screen->winsys);
  55     } else {
  56         return r300_create_context(screen,
  57                                    (struct r300_winsys*)screen->winsys);
  58     }
  59 }
  60
  61 boolean radeon_buffer_from_texture(struct drm_api* api,
  62                                    struct pipe_texture* texture,
  63                                    struct pipe_buffer** buffer,
  64                                    unsigned* stride)
  65 {
  66     /* XXX fix this */
  67     return r300_get_texture_buffer(texture, buffer, stride);
  68 }
  69
  70 /* Create a buffer from a handle. */
  71 /* XXX what's up with name? */
  72 struct pipe_buffer* radeon_buffer_from_handle(struct drm_api* api,
  73                                               struct pipe_screen* screen,
  74                                               const char* name,
  75                                               unsigned handle)
  76 {
  77     struct radeon_bo_manager* bom =
  78         ((struct radeon_winsys*)screen->winsys)->priv->bom;
  79     struct radeon_pipe_buffer* radeon_buffer;
  80     struct radeon_bo* bo = NULL;
  81
  82     bo = radeon_bo_open(bom, handle, 0, 0, 0, 0);
  83     if (bo == NULL) {
  84         return NULL;
  85     }
  86
  87     radeon_buffer = CALLOC_STRUCT(radeon_pipe_buffer);
  88     if (radeon_buffer == NULL) {
  89         radeon_bo_unref(bo);
  90         return NULL;
  91     }
  92
  93     pipe_reference_init(&radeon_buffer->base.reference, 1);
  94     radeon_buffer->base.screen = screen;
  95     radeon_buffer->base.usage = PIPE_BUFFER_USAGE_PIXEL;
  96     radeon_buffer->bo = bo;
  97     return &radeon_buffer->base;
  98 }
  99
 100 struct pipe_texture*
 101 radeon_texture_from_shared_handle(struct drm_api *api,
 102                                   struct pipe_screen *screen,
 103                                   struct pipe_texture *templ,
 104                                   const char *name,
 105                                   unsigned stride,
 106                                   unsigned handle)
 107 {
 108     struct pipe_buffer *buffer;
 109
 110     buffer = radeon_buffer_from_handle(api,
 111                                        screen,
 112                                        name,
 113                                        handle);
 114     if (!buffer)
 115         return NULL;
 116
 117     return screen->texture_blanket(screen, templ, &stride, buffer);
 118 }
 119
 120 boolean radeon_shared_handle_from_texture(struct drm_api *api,
 121                                           struct pipe_screen *screen,
 122                                           struct pipe_texture *texture,
 123                                           unsigned *stride,
 124                                           unsigned *handle)
 125 {
 126     int retval, fd;
 127     struct drm_gem_flink flink;
 128     struct radeon_pipe_buffer* radeon_buffer;
 129     if (!radeon_buffer_from_texture(api, texture, (struct pipe_buffer **)&radeon_buffer, stride)) {
 130         return FALSE;
 131     }
 132
 133     if (!radeon_buffer->flinked) {
 134         fd = ((struct radeon_winsys*)screen->winsys)->priv->fd;
 135
 136         flink.handle = radeon_buffer->bo->handle;
 137
 138         retval = ioctl(fd, DRM_IOCTL_GEM_FLINK, &flink);
 139         if (retval) {
 140             debug_printf("radeon: DRM_IOCTL_GEM_FLINK failed, error %d\n",
 141                     retval);
 142             return FALSE;
 143         }
 144
 145         radeon_buffer->flink = flink.name;
 146         radeon_buffer->flinked = TRUE;
 147     }
 148
 149     *handle = radeon_buffer->flink;
 150     return TRUE;
 151 }
 152
 153 boolean radeon_local_handle_from_texture(struct drm_api *api,
 154                                          struct pipe_screen *screen,
 155                                          struct pipe_texture *texture,
 156                                          unsigned *stride,
 157                                          unsigned *handle)
 158 {
 159     struct pipe_buffer *buffer;
 160     if (!radeon_buffer_from_texture(api, texture, &buffer, stride)) {
 161         return FALSE;
 162     }
 163
 164     *handle = ((struct radeon_pipe_buffer*)buffer)->bo->handle;
 165
 166     pipe_buffer_reference(&buffer, NULL);
 167
 168     return TRUE;
 169 }
 170
 171 struct drm_api drm_api_hooks = {
 172     .create_screen = radeon_create_screen,
 173     .create_context = radeon_create_context,
 174     .texture_from_shared_handle = radeon_texture_from_shared_handle,
 175     .shared_handle_from_texture = radeon_shared_handle_from_texture,
 176     .local_handle_from_texture = radeon_local_handle_from_texture,
 177 };
 178
 179 struct drm_api* drm_api_create()
 180 {
 181 #ifdef DEBUG
 182     return trace_drm_create(&drm_api_hooks);
 183 #else
 184     return &drm_api_hooks;
 185 #endif
 186 }