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(int drmFB,
  35                                          struct drm_create_screen_arg *arg)
  36 {
  37     struct radeon_winsys* winsys = radeon_pipe_winsys(drmFB);
  38
  39     if (getenv("RADEON_SOFTPIPE")) {
  40         return softpipe_create_screen((struct pipe_winsys*)winsys);
  41     } else {
  42         struct r300_winsys* r300 = radeon_create_r300_winsys(drmFB, winsys);
  43         FREE(winsys);
  44         return r300_create_screen(r300);
  45     }
  46 }
  47
  48 /* Create a pipe_context. */
  49 struct pipe_context* radeon_create_context(struct pipe_screen* screen)
  50 {
  51     if (getenv("RADEON_SOFTPIPE")) {
  52         return radeon_create_softpipe(screen->winsys);
  53     } else {
  54         return r300_create_context(screen, screen->winsys);
  55     }
  56 }
  57
  58 boolean radeon_buffer_from_texture(struct pipe_texture* texture,
  59                                    struct pipe_buffer** buffer,
  60                                    unsigned* stride)
  61 {
  62     return FALSE;
  63 }
  64
  65 /* Create a buffer from a handle. */
  66 /* XXX what's up with name? */
  67 struct pipe_buffer* radeon_buffer_from_handle(struct pipe_screen* screen,
  68                                               const char* name,
  69                                               unsigned handle)
  70 {
  71     struct radeon_bo_manager* bom =
  72         ((struct radeon_winsys*)screen->winsys)->priv->bom;
  73     struct radeon_pipe_buffer* radeon_buffer;
  74     struct radeon_bo* bo = NULL;
  75
  76     bo = radeon_bo_open(bom, handle, 0, 0, 0, 0);
  77     if (bo == NULL) {
  78         return NULL;
  79     }
  80
  81     radeon_buffer = CALLOC_STRUCT(radeon_pipe_buffer);
  82     if (radeon_buffer == NULL) {
  83         radeon_bo_unref(bo);
  84         return NULL;
  85     }
  86
  87     pipe_reference_init(&radeon_buffer->base.reference, 1);
  88     radeon_buffer->base.screen = screen;
  89     radeon_buffer->base.usage = PIPE_BUFFER_USAGE_PIXEL;
  90     radeon_buffer->bo = bo;
  91     return &radeon_buffer->base;
  92 }
  93
  94 boolean radeon_handle_from_buffer(struct pipe_screen* screen,
  95                                   struct pipe_buffer* buffer,
  96                                   unsigned* handle)
  97 {
  98     struct radeon_pipe_buffer* radeon_buffer =
  99         (struct radeon_pipe_buffer*)buffer;
 100     *handle = radeon_buffer->bo->handle;
 101     return TRUE;
 102 }
 103
 104 boolean radeon_global_handle_from_buffer(struct pipe_screen* screen,
 105                                          struct pipe_buffer* buffer,
 106                                          unsigned* handle)
 107 {
 108     /* XXX WTF is the difference here? global? */
 109     struct radeon_pipe_buffer* radeon_buffer =
 110         (struct radeon_pipe_buffer*)buffer;
 111     *handle = radeon_buffer->bo->handle;
 112     return TRUE;
 113 }
 114
 115 struct drm_api drm_api_hooks = {
 116     .create_screen = radeon_create_screen,
 117     .create_context = radeon_create_context,
 118     /* XXX fix this */
 119     .buffer_from_texture = r300_get_texture_buffer,
 120     .buffer_from_handle = radeon_buffer_from_handle,
 121     .handle_from_buffer = radeon_handle_from_buffer,
 122     .global_handle_from_buffer = radeon_global_handle_from_buffer,
 123 };