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 #ifdef DEBUG
  34 #include "trace/trace_drm.h"
  35 #endif
  36
  37 /* Create a pipe_screen. */
  38 struct pipe_screen* radeon_create_screen(int drmFB,
  39                                          struct drm_create_screen_arg *arg)
  40 {
  41     struct radeon_winsys* winsys = radeon_pipe_winsys(drmFB);
  42
  43     if (getenv("RADEON_SOFTPIPE")) {
  44         return softpipe_create_screen((struct pipe_winsys*)winsys);
  45     } else {
  46         struct r300_winsys* r300 = radeon_create_r300_winsys(drmFB, winsys);
  47         FREE(winsys);
  48         return r300_create_screen(r300);
  49     }
  50 }
  51
  52 /* Create a pipe_context. */
  53 struct pipe_context* radeon_create_context(struct pipe_screen* screen)
  54 {
  55     if (getenv("RADEON_SOFTPIPE")) {
  56         return radeon_create_softpipe(screen->winsys);
  57     } else {
  58         return r300_create_context(screen, screen->winsys);
  59     }
  60 }
  61
  62 boolean radeon_buffer_from_texture(struct pipe_texture* texture,
  63                                    struct pipe_buffer** buffer,
  64                                    unsigned* stride)
  65 {
  66     return FALSE;
  67 }
  68
  69 /* Create a buffer from a handle. */
  70 /* XXX what's up with name? */
  71 struct pipe_buffer* radeon_buffer_from_handle(struct pipe_screen* screen,
  72                                               const char* name,
  73                                               unsigned handle)
  74 {
  75     struct radeon_bo_manager* bom =
  76         ((struct radeon_winsys*)screen->winsys)->priv->bom;
  77     struct radeon_pipe_buffer* radeon_buffer;
  78     struct radeon_bo* bo = NULL;
  79
  80     bo = radeon_bo_open(bom, handle, 0, 0, 0, 0);
  81     if (bo == NULL) {
  82         return NULL;
  83     }
  84
  85     radeon_buffer = CALLOC_STRUCT(radeon_pipe_buffer);
  86     if (radeon_buffer == NULL) {
  87         radeon_bo_unref(bo);
  88         return NULL;
  89     }
  90
  91     pipe_reference_init(&radeon_buffer->base.reference, 1);
  92     radeon_buffer->base.screen = screen;
  93     radeon_buffer->base.usage = PIPE_BUFFER_USAGE_PIXEL;
  94     radeon_buffer->bo = bo;
  95     return &radeon_buffer->base;
  96 }
  97
  98 boolean radeon_handle_from_buffer(struct pipe_screen* screen,
  99                                   struct pipe_buffer* buffer,
 100                                   unsigned* handle)
 101 {
 102     struct radeon_pipe_buffer* radeon_buffer =
 103         (struct radeon_pipe_buffer*)buffer;
 104     *handle = radeon_buffer->bo->handle;
 105     return TRUE;
 106 }
 107
 108 boolean radeon_global_handle_from_buffer(struct pipe_screen* screen,
 109                                          struct pipe_buffer* buffer,
 110                                          unsigned* handle)
 111 {
 112     /* XXX WTF is the difference here? global? */
 113     struct radeon_pipe_buffer* radeon_buffer =
 114         (struct radeon_pipe_buffer*)buffer;
 115     *handle = radeon_buffer->bo->handle;
 116     return TRUE;
 117 }
 118
 119 #ifdef DEBUG
 120 struct drm_api hooks = {
 121 #else
 122 struct drm_api drm_api_hooks = {
 123 #endif
 124     .create_screen = radeon_create_screen,
 125     .create_context = radeon_create_context,
 126     /* XXX fix this */
 127     .buffer_from_texture = r300_get_texture_buffer,
 128     .buffer_from_handle = radeon_buffer_from_handle,
 129     .handle_from_buffer = radeon_handle_from_buffer,
 130     .global_handle_from_buffer = radeon_global_handle_from_buffer,
 131 };