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  *      Joakim Sindholt <opensource@zhasha.com>
  30  */
  31
  32 #include "softpipe/sp_winsys.h"
  33
  34 #include "radeon_drm.h"
  35
  36 /* Helper function to do the ioctls needed for setup and init. */
  37 static void do_ioctls(int fd, struct radeon_winsys* winsys)
  38 {
  39     struct drm_radeon_gem_info gem_info = {0};
  40     struct drm_radeon_info info = {0};
  41     int target = 0;
  42     int retval;
  43     drmVersionPtr version;
  44
  45     info.value = (unsigned long)&target;
  46
  47     /* We do things in a specific order here.
  48      *
  49      * DRM version first. We need to be sure we're running on a KMS chipset.
  50      * This is also for some features.
  51      *
  52      * Then, the PCI ID. This is essential and should return usable numbers
  53      * for all Radeons. If this fails, we probably got handed an FD for some
  54      * non-Radeon card.
  55      *
  56      * The GB and Z pipe requests should always succeed, but they might not
  57      * return sensical values for all chipsets, but that's alright because
  58      * the pipe drivers already know that.
  59      *
  60      * The GEM info is actually bogus on the kernel side, as well as our side
  61      * (see radeon_gem_info_ioctl in radeon_gem.c) but that's alright because
  62      * we don't actually use the info for anything yet. */
  63
  64     version = drmGetVersion(fd);
  65     if (version->version_major != 2) {
  66         fprintf(stderr, "%s: DRM version is %d.%d.%d but this driver is "
  67                 "only compatible with 2.x.x\n", __FUNCTION__,
  68                 version->version_major, version->version_minor,
  69                 version->version_patchlevel);
  70         drmFreeVersion(version);
  71         exit(1);
  72     }
  73
  74     info.request = RADEON_INFO_DEVICE_ID;
  75     retval = drmCommandWriteRead(fd, DRM_RADEON_INFO, &info, sizeof(info));
  76     if (retval) {
  77         fprintf(stderr, "%s: Failed to get PCI ID, "
  78                 "error number %d\n", __FUNCTION__, retval);
  79         exit(1);
  80     }
  81     winsys->pci_id = target;
  82
  83     info.request = RADEON_INFO_NUM_GB_PIPES;
  84     retval = drmCommandWriteRead(fd, DRM_RADEON_INFO, &info, sizeof(info));
  85     if (retval) {
  86         fprintf(stderr, "%s: Failed to get GB pipe count, "
  87                 "error number %d\n", __FUNCTION__, retval);
  88         exit(1);
  89     }
  90     winsys->gb_pipes = target;
  91
  92     info.request = RADEON_INFO_NUM_Z_PIPES;
  93     retval = drmCommandWriteRead(fd, DRM_RADEON_INFO, &info, sizeof(info));
  94     if (retval) {
  95         fprintf(stderr, "%s: Failed to get Z pipe count, "
  96                 "error number %d\n", __FUNCTION__, retval);
  97         exit(1);
  98     }
  99     winsys->z_pipes = target;
 100
 101     retval = drmCommandWriteRead(fd, DRM_RADEON_GEM_INFO,
 102             &gem_info, sizeof(gem_info));
 103     if (retval) {
 104         fprintf(stderr, "%s: Failed to get MM info, error number %d\n",
 105                 __FUNCTION__, retval);
 106         exit(1);
 107     }
 108     winsys->gart_size = gem_info.gart_size;
 109     winsys->vram_size = gem_info.vram_size;
 110
 111     debug_printf("radeon: Successfully grabbed chipset info from kernel!\n"
 112                  "radeon: DRM version: %d.%d.%d ID: 0x%04x GB: %d Z: %d\n"
 113                  "radeon: GART size: %d MB VRAM size: %d MB\n",
 114                  version->version_major, version->version_minor,
 115                  version->version_patchlevel, winsys->pci_id,
 116                  winsys->gb_pipes, winsys->z_pipes,
 117                  winsys->gart_size / 1024 / 1024,
 118                  winsys->vram_size / 1024 / 1024);
 119
 120     drmFreeVersion(version);
 121 }
 122
 123 /* Create a pipe_screen. */
 124 struct pipe_screen* radeon_create_screen(struct drm_api* api,
 125                                          int drmFB,
 126                                          struct drm_create_screen_arg *arg)
 127 {
 128     struct radeon_winsys* rwinsys = radeon_pipe_winsys(drmFB);
 129     do_ioctls(drmFB, rwinsys);
 130
 131     if (!is_r3xx(rwinsys->pci_id) ||
 132         debug_get_bool_option("RADEON_SOFTPIPE", FALSE)) {
 133         return softpipe_create_screen((struct pipe_winsys*)rwinsys);
 134     } else {
 135         radeon_setup_winsys(drmFB, rwinsys);
 136         return r300_create_screen(rwinsys);
 137     }
 138 }
 139
 140 /* Create a pipe_context. */
 141 struct pipe_context* radeon_create_context(struct drm_api* api,
 142                                            struct pipe_screen* screen)
 143 {
 144     struct radeon_winsys* rwinsys = (struct radeon_winsys*)screen->winsys;
 145
 146     if (!is_r3xx(rwinsys->pci_id) ||
 147         debug_get_bool_option("RADEON_SOFTPIPE", FALSE)) {
 148         return softpipe_create(screen);
 149     } else {
 150         return r300_create_context(screen, rwinsys);
 151     }
 152 }
 153
 154 boolean radeon_buffer_from_texture(struct drm_api* api,
 155                                    struct pipe_screen* screen,
 156                                    struct pipe_texture* texture,
 157                                    struct pipe_buffer** buffer,
 158                                    unsigned* stride)
 159 {
 160     /* XXX fix this */
 161     return r300_get_texture_buffer(screen, texture, buffer, stride);
 162 }
 163
 164 /* Create a buffer from a handle. */
 165 /* XXX what's up with name? */
 166 struct pipe_buffer* radeon_buffer_from_handle(struct drm_api* api,
 167                                               struct pipe_screen* screen,
 168                                               const char* name,
 169                                               unsigned handle)
 170 {
 171     struct radeon_bo_manager* bom =
 172         ((struct radeon_winsys*)screen->winsys)->priv->bom;
 173     struct radeon_pipe_buffer* radeon_buffer;
 174     struct radeon_bo* bo = NULL;
 175
 176     bo = radeon_bo_open(bom, handle, 0, 0, 0, 0);
 177     if (bo == NULL) {
 178         return NULL;
 179     }
 180
 181     radeon_buffer = CALLOC_STRUCT(radeon_pipe_buffer);
 182     if (radeon_buffer == NULL) {
 183         radeon_bo_unref(bo);
 184         return NULL;
 185     }
 186
 187     pipe_reference_init(&radeon_buffer->base.reference, 1);
 188     radeon_buffer->base.screen = screen;
 189     radeon_buffer->base.usage = PIPE_BUFFER_USAGE_PIXEL;
 190     radeon_buffer->bo = bo;
 191     return &radeon_buffer->base;
 192 }
 193
 194 static struct pipe_texture*
 195 radeon_texture_from_shared_handle(struct drm_api *api,
 196                                   struct pipe_screen *screen,
 197                                   struct pipe_texture *templ,
 198                                   const char *name,
 199                                   unsigned stride,
 200                                   unsigned handle)
 201 {
 202     struct pipe_buffer *buffer;
 203     struct pipe_texture *blanket;
 204
 205     buffer = radeon_buffer_from_handle(api, screen, name, handle);
 206     if (!buffer) {
 207         return NULL;
 208     }
 209
 210     blanket = screen->texture_blanket(screen, templ, &stride, buffer);
 211
 212     pipe_buffer_reference(&buffer, NULL);
 213
 214     return blanket;
 215 }
 216
 217 static boolean radeon_shared_handle_from_texture(struct drm_api *api,
 218                                                  struct pipe_screen *screen,
 219                                                  struct pipe_texture *texture,
 220                                                  unsigned *stride,
 221                                                  unsigned *handle)
 222 {
 223     int retval, fd;
 224     struct drm_gem_flink flink;
 225     struct radeon_pipe_buffer* radeon_buffer;
 226     struct pipe_buffer *buffer = NULL;
 227
 228     if (!radeon_buffer_from_texture(api, screen, texture, &buffer, stride)) {
 229         return FALSE;
 230     }
 231
 232     radeon_buffer = (struct radeon_pipe_buffer*)buffer;
 233     if (!radeon_buffer->flinked) {
 234         fd = ((struct radeon_winsys*)screen->winsys)->priv->fd;
 235
 236         flink.handle = radeon_buffer->bo->handle;
 237
 238         retval = ioctl(fd, DRM_IOCTL_GEM_FLINK, &flink);
 239         if (retval) {
 240             debug_printf("radeon: DRM_IOCTL_GEM_FLINK failed, error %d\n",
 241                     retval);
 242             return FALSE;
 243         }
 244
 245         radeon_buffer->flink = flink.name;
 246         radeon_buffer->flinked = TRUE;
 247     }
 248
 249     *handle = radeon_buffer->flink;
 250     return TRUE;
 251 }
 252
 253 static boolean radeon_local_handle_from_texture(struct drm_api *api,
 254                                                 struct pipe_screen *screen,
 255                                                 struct pipe_texture *texture,
 256                                                 unsigned *stride,
 257                                                 unsigned *handle)
 258 {
 259     struct pipe_buffer *buffer = NULL;
 260     if (!radeon_buffer_from_texture(api, screen, texture, &buffer, stride)) {
 261         return FALSE;
 262     }
 263
 264     *handle = ((struct radeon_pipe_buffer*)buffer)->bo->handle;
 265
 266     pipe_buffer_reference(&buffer, NULL);
 267
 268     return TRUE;
 269 }
 270
 271 struct drm_api drm_api_hooks = {
 272     .name = "radeon",
 273     .create_screen = radeon_create_screen,
 274     .create_context = radeon_create_context,
 275     .texture_from_shared_handle = radeon_texture_from_shared_handle,
 276     .shared_handle_from_texture = radeon_shared_handle_from_texture,
 277     .local_handle_from_texture = radeon_local_handle_from_texture,
 278 };
 279
 280 struct drm_api* drm_api_create()
 281 {
 282 #ifdef DEBUG
 283     return trace_drm_create(&drm_api_hooks);
 284 #else
 285     return &drm_api_hooks;
 286 #endif
 287 }