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 "radeon_drm.h"
  33 #include "radeon_r300.h"
  34 #include "radeon_buffer.h"
  35
  36 #include "r300_winsys.h"
  37 #include "trace/tr_drm.h"
  38
  39 #include "util/u_memory.h"
  40
  41 #include "xf86drm.h"
  42 #include <sys/ioctl.h>
  43
  44 /* Helper function to do the ioctls needed for setup and init. */
  45 static void do_ioctls(int fd, struct radeon_winsys* winsys)
  46 {
  47     struct drm_radeon_gem_info gem_info = {0};
  48     struct drm_radeon_info info = {0};
  49     int target = 0;
  50     int retval;
  51     drmVersionPtr version;
  52
  53     info.value = (unsigned long)&target;
  54
  55     /* We do things in a specific order here.
  56      *
  57      * DRM version first. We need to be sure we're running on a KMS chipset.
  58      * This is also for some features.
  59      *
  60      * Then, the PCI ID. This is essential and should return usable numbers
  61      * for all Radeons. If this fails, we probably got handed an FD for some
  62      * non-Radeon card.
  63      *
  64      * The GB and Z pipe requests should always succeed, but they might not
  65      * return sensical values for all chipsets, but that's alright because
  66      * the pipe drivers already know that.
  67      *
  68      * The GEM info is actually bogus on the kernel side, as well as our side
  69      * (see radeon_gem_info_ioctl in radeon_gem.c) but that's alright because
  70      * we don't actually use the info for anything yet. */
  71
  72     version = drmGetVersion(fd);
  73     if (version->version_major != 2) {
  74         fprintf(stderr, "%s: DRM version is %d.%d.%d but this driver is "
  75                 "only compatible with 2.x.x\n", __FUNCTION__,
  76                 version->version_major, version->version_minor,
  77                 version->version_patchlevel);
  78         drmFreeVersion(version);
  79         exit(1);
  80     }
  81
  82     info.request = RADEON_INFO_DEVICE_ID;
  83     retval = drmCommandWriteRead(fd, DRM_RADEON_INFO, &info, sizeof(info));
  84     if (retval) {
  85         fprintf(stderr, "%s: Failed to get PCI ID, "
  86                 "error number %d\n", __FUNCTION__, retval);
  87         exit(1);
  88     }
  89     winsys->pci_id = target;
  90
  91     info.request = RADEON_INFO_NUM_GB_PIPES;
  92     retval = drmCommandWriteRead(fd, DRM_RADEON_INFO, &info, sizeof(info));
  93     if (retval) {
  94         fprintf(stderr, "%s: Failed to get GB pipe count, "
  95                 "error number %d\n", __FUNCTION__, retval);
  96         exit(1);
  97     }
  98     winsys->gb_pipes = target;
  99
 100     info.request = RADEON_INFO_NUM_Z_PIPES;
 101     retval = drmCommandWriteRead(fd, DRM_RADEON_INFO, &info, sizeof(info));
 102     if (retval) {
 103         fprintf(stderr, "%s: Failed to get Z pipe count, "
 104                 "error number %d\n", __FUNCTION__, retval);
 105         exit(1);
 106     }
 107     winsys->z_pipes = target;
 108
 109     retval = drmCommandWriteRead(fd, DRM_RADEON_GEM_INFO,
 110             &gem_info, sizeof(gem_info));
 111     if (retval) {
 112         fprintf(stderr, "%s: Failed to get MM info, error number %d\n",
 113                 __FUNCTION__, retval);
 114         exit(1);
 115     }
 116     winsys->gart_size = gem_info.gart_size;
 117     winsys->vram_size = gem_info.vram_size;
 118
 119     debug_printf("radeon: Successfully grabbed chipset info from kernel!\n"
 120                  "radeon: DRM version: %d.%d.%d ID: 0x%04x GB: %d Z: %d\n"
 121                  "radeon: GART size: %d MB VRAM size: %d MB\n",
 122                  version->version_major, version->version_minor,
 123                  version->version_patchlevel, winsys->pci_id,
 124                  winsys->gb_pipes, winsys->z_pipes,
 125                  winsys->gart_size / 1024 / 1024,
 126                  winsys->vram_size / 1024 / 1024);
 127
 128     drmFreeVersion(version);
 129 }
 130
 131 /* Create a pipe_screen. */
 132 struct pipe_screen* radeon_create_screen(struct drm_api* api,
 133                                          int drmFB,
 134                                          struct drm_create_screen_arg *arg)
 135 {
 136     struct radeon_winsys* rwinsys = radeon_pipe_winsys(drmFB);
 137     do_ioctls(drmFB, rwinsys);
 138
 139     /* The state tracker can organize a softpipe fallback if no hw
 140      * driver is found.
 141      */
 142     if (is_r3xx(rwinsys->pci_id)) {
 143         radeon_setup_winsys(drmFB, rwinsys);
 144         return r300_create_screen(rwinsys);
 145     } else {
 146         FREE(rwinsys);
 147         return NULL;
 148     }
 149 }
 150
 151
 152 boolean radeon_buffer_from_texture(struct drm_api* api,
 153                                    struct pipe_screen* screen,
 154                                    struct pipe_texture* texture,
 155                                    struct pipe_buffer** buffer,
 156                                    unsigned* stride)
 157 {
 158     /* XXX fix this */
 159     return r300_get_texture_buffer(screen, texture, buffer, stride);
 160 }
 161
 162 /* Create a buffer from a handle. */
 163 /* XXX what's up with name? */
 164 struct pipe_buffer* radeon_buffer_from_handle(struct drm_api* api,
 165                                               struct pipe_screen* screen,
 166                                               const char* name,
 167                                               unsigned handle)
 168 {
 169     struct radeon_bo_manager* bom =
 170         ((struct radeon_winsys*)screen->winsys)->priv->bom;
 171     struct radeon_pipe_buffer* radeon_buffer;
 172     struct radeon_bo* bo = NULL;
 173
 174     bo = radeon_bo_open(bom, handle, 0, 0, 0, 0);
 175     if (bo == NULL) {
 176         return NULL;
 177     }
 178
 179     radeon_buffer = CALLOC_STRUCT(radeon_pipe_buffer);
 180     if (radeon_buffer == NULL) {
 181         radeon_bo_unref(bo);
 182         return NULL;
 183     }
 184
 185     pipe_reference_init(&radeon_buffer->base.reference, 1);
 186     radeon_buffer->base.screen = screen;
 187     radeon_buffer->base.usage = PIPE_BUFFER_USAGE_PIXEL;
 188     radeon_buffer->bo = bo;
 189     return &radeon_buffer->base;
 190 }
 191
 192 static struct pipe_texture*
 193 radeon_texture_from_shared_handle(struct drm_api *api,
 194                                   struct pipe_screen *screen,
 195                                   struct pipe_texture *templ,
 196                                   const char *name,
 197                                   unsigned stride,
 198                                   unsigned handle)
 199 {
 200     struct pipe_buffer *buffer;
 201     struct pipe_texture *blanket;
 202
 203     buffer = radeon_buffer_from_handle(api, screen, name, handle);
 204     if (!buffer) {
 205         return NULL;
 206     }
 207
 208     blanket = screen->texture_blanket(screen, templ, &stride, buffer);
 209
 210     pipe_buffer_reference(&buffer, NULL);
 211
 212     return blanket;
 213 }
 214
 215 static boolean radeon_shared_handle_from_texture(struct drm_api *api,
 216                                                  struct pipe_screen *screen,
 217                                                  struct pipe_texture *texture,
 218                                                  unsigned *stride,
 219                                                  unsigned *handle)
 220 {
 221     int retval, fd;
 222     struct drm_gem_flink flink;
 223     struct radeon_pipe_buffer* radeon_buffer;
 224     struct pipe_buffer *buffer = NULL;
 225
 226     if (!radeon_buffer_from_texture(api, screen, texture, &buffer, stride)) {
 227         return FALSE;
 228     }
 229
 230     radeon_buffer = (struct radeon_pipe_buffer*)buffer;
 231     if (!radeon_buffer->flinked) {
 232         fd = ((struct radeon_winsys*)screen->winsys)->priv->fd;
 233
 234         flink.handle = radeon_buffer->bo->handle;
 235
 236         retval = ioctl(fd, DRM_IOCTL_GEM_FLINK, &flink);
 237         if (retval) {
 238             debug_printf("radeon: DRM_IOCTL_GEM_FLINK failed, error %d\n",
 239                     retval);
 240             return FALSE;
 241         }
 242
 243         radeon_buffer->flink = flink.name;
 244         radeon_buffer->flinked = TRUE;
 245     }
 246
 247     *handle = radeon_buffer->flink;
 248     return TRUE;
 249 }
 250
 251 static boolean radeon_local_handle_from_texture(struct drm_api *api,
 252                                                 struct pipe_screen *screen,
 253                                                 struct pipe_texture *texture,
 254                                                 unsigned *stride,
 255                                                 unsigned *handle)
 256 {
 257     struct pipe_buffer *buffer = NULL;
 258     if (!radeon_buffer_from_texture(api, screen, texture, &buffer, stride)) {
 259         return FALSE;
 260     }
 261
 262     *handle = ((struct radeon_pipe_buffer*)buffer)->bo->handle;
 263
 264     pipe_buffer_reference(&buffer, NULL);
 265
 266     return TRUE;
 267 }
 268
 269 static void radeon_drm_api_destroy(struct drm_api *api)
 270 {
 271     return;
 272 }
 273
 274 struct drm_api drm_api_hooks = {
 275     .name = "radeon",
 276     .driver_name = "radeon",
 277     .create_screen = radeon_create_screen,
 278     .texture_from_shared_handle = radeon_texture_from_shared_handle,
 279     .shared_handle_from_texture = radeon_shared_handle_from_texture,
 280     .local_handle_from_texture = radeon_local_handle_from_texture,
 281     .destroy = radeon_drm_api_destroy,
 282 };
 283
 284 struct drm_api* drm_api_create()
 285 {
 286 #ifdef DEBUG
 287     return trace_drm_create(&drm_api_hooks);
 288 #else
 289     return &drm_api_hooks;
 290 #endif
 291 }