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, screen->winsys);
  57     }
  58 }
  59
  60 boolean radeon_buffer_from_texture(struct drm_api* api,
  61                                    struct pipe_texture* texture,
  62                                    struct pipe_buffer** buffer,
  63                                    unsigned* stride)
  64 {
  65     /* XXX fix this */
  66     return r300_get_texture_buffer(texture, buffer, stride);
  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 drm_api* api,
  72                                               struct pipe_screen* screen,
  73                                               const char* name,
  74                                               unsigned handle)
  75 {
  76     struct radeon_bo_manager* bom =
  77         ((struct radeon_winsys*)screen->winsys)->priv->bom;
  78     struct radeon_pipe_buffer* radeon_buffer;
  79     struct radeon_bo* bo = NULL;
  80
  81     bo = radeon_bo_open(bom, handle, 0, 0, 0, 0);
  82     if (bo == NULL) {
  83         return NULL;
  84     }
  85
  86     radeon_buffer = CALLOC_STRUCT(radeon_pipe_buffer);
  87     if (radeon_buffer == NULL) {
  88         radeon_bo_unref(bo);
  89         return NULL;
  90     }
  91
  92     pipe_reference_init(&radeon_buffer->base.reference, 1);
  93     radeon_buffer->base.screen = screen;
  94     radeon_buffer->base.usage = PIPE_BUFFER_USAGE_PIXEL;
  95     radeon_buffer->bo = bo;
  96     return &radeon_buffer->base;
  97 }
  98
  99 boolean radeon_handle_from_buffer(struct drm_api* api,
 100                                   struct pipe_screen* screen,
 101                                   struct pipe_buffer* buffer,
 102                                   unsigned* handle)
 103 {
 104     struct radeon_pipe_buffer* radeon_buffer =
 105         (struct radeon_pipe_buffer*)buffer;
 106     *handle = radeon_buffer->bo->handle;
 107     return TRUE;
 108 }
 109
 110 boolean radeon_global_handle_from_buffer(struct drm_api* api,
 111                                          struct pipe_screen* screen,
 112                                          struct pipe_buffer* buffer,
 113                                          unsigned* handle)
 114 {
 115     /* XXX WTF is the difference here? global? */
 116     struct radeon_pipe_buffer* radeon_buffer =
 117         (struct radeon_pipe_buffer*)buffer;
 118     *handle = radeon_buffer->bo->handle;
 119     return TRUE;
 120 }
 121
 122 struct drm_api drm_api_hooks = {
 123     .create_screen = radeon_create_screen,
 124     .create_context = radeon_create_context,
 125     .buffer_from_texture = radeon_buffer_from_texture,
 126     .buffer_from_handle = radeon_buffer_from_handle,
 127     .handle_from_buffer = radeon_handle_from_buffer,
 128     .global_handle_from_buffer = radeon_global_handle_from_buffer,
 129 };
 130
 131 struct drm_api* drm_api_create()
 132 {
 133     return &drm_api_hooks;
 134 }