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 #include "trace/tr_drm.h"
  33
  34 /* Create a pipe_screen. */
  35 struct pipe_screen* radeon_create_screen(struct drm_api* api,
  36                                          int drmFB,
  37                                          struct drm_create_screen_arg *arg)
  38 {
  39     struct radeon_winsys* winsys = radeon_pipe_winsys(drmFB);
  40
  41     if (getenv("RADEON_SOFTPIPE")) {
  42         return softpipe_create_screen((struct pipe_winsys*)winsys);
  43     } else {
  44         struct r300_winsys* r300 = radeon_create_r300_winsys(drmFB, winsys);
  45         FREE(winsys);
  46         return r300_create_screen(r300);
  47     }
  48 }
  49
  50 /* Create a pipe_context. */
  51 struct pipe_context* radeon_create_context(struct drm_api* api,
  52                                            struct pipe_screen* screen)
  53 {
  54     if (getenv("RADEON_SOFTPIPE")) {
  55         return radeon_create_softpipe(screen->winsys);
  56     } else {
  57         return r300_create_context(screen, 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 boolean radeon_handle_from_buffer(struct drm_api* api,
 101                                   struct pipe_screen* screen,
 102                                   struct pipe_buffer* buffer,
 103                                   unsigned* handle)
 104 {
 105     struct radeon_pipe_buffer* radeon_buffer =
 106         (struct radeon_pipe_buffer*)buffer;
 107     *handle = radeon_buffer->bo->handle;
 108     return TRUE;
 109 }
 110
 111 boolean radeon_global_handle_from_buffer(struct drm_api* api,
 112                                          struct pipe_screen* screen,
 113                                          struct pipe_buffer* buffer,
 114                                          unsigned* handle)
 115 {
 116     int retval, fd;
 117     struct drm_gem_flink flink;
 118     struct radeon_pipe_buffer* radeon_buffer =
 119         (struct radeon_pipe_buffer*)buffer;
 120
 121     if (!radeon_buffer->flinked) {
 122         fd = ((struct radeon_winsys*)screen->winsys)->priv->fd;
 123
 124         flink.handle = radeon_buffer->bo->handle;
 125
 126         retval = ioctl(fd, DRM_IOCTL_GEM_FLINK, &flink);
 127         if (retval) {
 128             debug_printf("radeon: DRM_IOCTL_GEM_FLINK failed, error %d\n",
 129                     retval);
 130             return FALSE;
 131         }
 132
 133         radeon_buffer->flink = flink.name;
 134         radeon_buffer->flinked = TRUE;
 135     }
 136
 137     *handle = radeon_buffer->flink;
 138     return TRUE;
 139 }
 140
 141 struct drm_api drm_api_hooks = {
 142     .create_screen = radeon_create_screen,
 143     .create_context = radeon_create_context,
 144     .buffer_from_texture = radeon_buffer_from_texture,
 145     .buffer_from_handle = radeon_buffer_from_handle,
 146     .handle_from_buffer = radeon_handle_from_buffer,
 147     .global_handle_from_buffer = radeon_global_handle_from_buffer,
 148 };
 149
 150 struct drm_api* drm_api_create()
 151 {
 152 #ifdef DEBUG
 153     return trace_drm_create(&drm_api_hooks);
 154 #else
 155     return &drm_api_hooks;
 156 #endif
 157 }