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 #include "r300_screen.h"
  35 #include "xf86drm.h"
  36
  37 #include <sys/ioctl.h>
  38
  39 /* Create a pipe_screen. */
  40 struct pipe_screen* radeon_create_screen(struct drm_api* api,
  41                                          int drmFB,
  42                                          struct drm_create_screen_arg *arg)
  43 {
  44     struct radeon_winsys* winsys = radeon_pipe_winsys(drmFB);
  45
  46     if (getenv("RADEON_SOFTPIPE")) {
  47         return softpipe_create_screen((struct pipe_winsys*)winsys);
  48     } else {
  49         struct r300_winsys* r300 = radeon_create_r300_winsys(drmFB, winsys);
  50         FREE(winsys);
  51         return r300_create_screen(r300);
  52     }
  53 }
  54
  55 /* Create a pipe_context. */
  56 struct pipe_context* radeon_create_context(struct drm_api* api,
  57                                            struct pipe_screen* screen)
  58 {
  59     if (getenv("RADEON_SOFTPIPE")) {
  60         return radeon_create_softpipe(screen->winsys);
  61     } else {
  62         return r300_create_context(screen, screen->winsys);
  63     }
  64 }
  65
  66 boolean radeon_buffer_from_texture(struct drm_api* api,
  67                                    struct pipe_texture* texture,
  68                                    struct pipe_buffer** buffer,
  69                                    unsigned* stride)
  70 {
  71     /* XXX fix this */
  72     return r300_get_texture_buffer(texture, buffer, stride);
  73 }
  74
  75 /* Create a buffer from a handle. */
  76 /* XXX what's up with name? */
  77 struct pipe_buffer* radeon_buffer_from_handle(struct drm_api* api,
  78                                               struct pipe_screen* screen,
  79                                               const char* name,
  80                                               unsigned handle)
  81 {
  82     struct radeon_bo_manager* bom =
  83         ((struct radeon_winsys*)screen->winsys)->priv->bom;
  84     struct radeon_pipe_buffer* radeon_buffer;
  85     struct radeon_bo* bo = NULL;
  86
  87     bo = radeon_bo_open(bom, handle, 0, 0, 0, 0);
  88     if (bo == NULL) {
  89         return NULL;
  90     }
  91
  92     radeon_buffer = CALLOC_STRUCT(radeon_pipe_buffer);
  93     if (radeon_buffer == NULL) {
  94         radeon_bo_unref(bo);
  95         return NULL;
  96     }
  97
  98     pipe_reference_init(&radeon_buffer->base.reference, 1);
  99     radeon_buffer->base.screen = screen;
 100     radeon_buffer->base.usage = PIPE_BUFFER_USAGE_PIXEL;
 101     radeon_buffer->bo = bo;
 102     return &radeon_buffer->base;
 103 }
 104
 105 boolean radeon_handle_from_buffer(struct drm_api* api,
 106                                   struct pipe_screen* screen,
 107                                   struct pipe_buffer* buffer,
 108                                   unsigned* handle)
 109 {
 110     struct radeon_pipe_buffer* radeon_buffer =
 111         (struct radeon_pipe_buffer*)buffer;
 112     *handle = radeon_buffer->bo->handle;
 113     return TRUE;
 114 }
 115
 116 boolean radeon_global_handle_from_buffer(struct drm_api* api,
 117                                          struct pipe_screen* screen,
 118                                          struct pipe_buffer* buffer,
 119                                          unsigned* handle)
 120 {
 121     int retval, fd;
 122     struct drm_gem_flink flink;
 123     struct radeon_pipe_buffer* radeon_buffer =
 124         (struct radeon_pipe_buffer*)buffer;
 125
 126     if (!radeon_buffer->flinked) {
 127         fd = ((struct radeon_winsys*)screen->winsys)->priv->fd;
 128
 129         flink.handle = radeon_buffer->bo->handle;
 130
 131         retval = ioctl(fd, DRM_IOCTL_GEM_FLINK, &flink);
 132         if (retval) {
 133             debug_printf("radeon: DRM_IOCTL_GEM_FLINK failed, error %d\n",
 134                     retval);
 135             return FALSE;
 136         }
 137
 138         radeon_buffer->flink = flink.name;
 139         radeon_buffer->flinked = TRUE;
 140     }
 141
 142     *handle = radeon_buffer->flink;
 143     return TRUE;
 144 }
 145
 146 struct drm_api drm_api_hooks = {
 147     .create_screen = radeon_create_screen,
 148     .create_context = radeon_create_context,
 149     .buffer_from_texture = radeon_buffer_from_texture,
 150     .buffer_from_handle = radeon_buffer_from_handle,
 151     .handle_from_buffer = radeon_handle_from_buffer,
 152     .global_handle_from_buffer = radeon_global_handle_from_buffer,
 153 };
 154
 155 struct drm_api* drm_api_create()
 156 {
 157 #ifdef DEBUG
 158     return trace_drm_create(&drm_api_hooks);
 159 #else
 160     return &drm_api_hooks;
 161 #endif
 162 }