src/gallium/winsys/radeon/drm/radeon_drm_winsys.c

   1 /*
   2  * Copyright © 2009 Corbin Simpson
   3  * Copyright © 2011 Marek Olšák <maraeo@gmail.com>
   4  * All Rights Reserved.
   5  *
   6  * Permission is hereby granted, free of charge, to any person obtaining
   7  * a copy of this software and associated documentation files (the
   8  * "Software"), to deal in the Software without restriction, including
   9  * without limitation the rights to use, copy, modify, merge, publish,
  10  * distribute, sub license, and/or sell copies of the Software, and to
  11  * permit persons to whom the Software is furnished to do so, subject to
  12  * the following conditions:
  13  *
  14  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
  15  * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES
  16  * OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
  17  * NON-INFRINGEMENT. IN NO EVENT SHALL THE COPYRIGHT HOLDERS, AUTHORS
  18  * AND/OR ITS SUPPLIERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
  19  * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
  20  * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE
  21  * USE OR OTHER DEALINGS IN THE SOFTWARE.
  22  *
  23  * The above copyright notice and this permission notice (including the
  24  * next paragraph) shall be included in all copies or substantial portions
  25  * of the Software.
  26  */
  27 /*
  28  * Authors:
  29  *      Corbin Simpson <MostAwesomeDude@gmail.com>
  30  *      Joakim Sindholt <opensource@zhasha.com>
  31  *      Marek Olšák <maraeo@gmail.com>
  32  */
  33
  34 #include "radeon_drm_bo.h"
  35 #include "radeon_drm_cs.h"
  36 #include "radeon_drm_public.h"
  37
  38 #include "pipebuffer/pb_bufmgr.h"
  39 #include "util/u_memory.h"
  40
  41 #include <xf86drm.h>
  42 #include <stdio.h>
  43
  44 /*
  45  * this are copy from radeon_drm, once an updated libdrm is released
  46  * we should bump configure.ac requirement for it and remove the following
  47  * field
  48  */
  49 #ifndef RADEON_INFO_TILING_CONFIG
  50 #define RADEON_INFO_TILING_CONFIG 6
  51 #endif
  52
  53 #ifndef RADEON_INFO_WANT_HYPERZ
  54 #define RADEON_INFO_WANT_HYPERZ 7
  55 #endif
  56
  57 #ifndef RADEON_INFO_WANT_CMASK
  58 #define RADEON_INFO_WANT_CMASK 8
  59 #endif
  60
  61 #ifndef RADEON_INFO_CLOCK_CRYSTAL_FREQ
  62 #define RADEON_INFO_CLOCK_CRYSTAL_FREQ 9
  63 #endif
  64
  65 #ifndef RADEON_INFO_NUM_BACKENDS
  66 #define RADEON_INFO_NUM_BACKENDS 0xa
  67 #endif
  68
  69 #ifndef RADEON_INFO_NUM_TILE_PIPES
  70 #define RADEON_INFO_NUM_TILE_PIPES 0xb
  71 #endif
  72
  73 #ifndef RADEON_INFO_BACKEND_MAP
  74 #define RADEON_INFO_BACKEND_MAP 0xd
  75 #endif
  76
  77 #ifndef RADEON_INFO_VA_START
  78 /* virtual address start, va < start are reserved by the kernel */
  79 #define RADEON_INFO_VA_START        0x0e
  80 /* maximum size of ib using the virtual memory cs */
  81 #define RADEON_INFO_IB_VM_MAX_SIZE  0x0f
  82 #endif
  83
  84
  85 /* Enable/disable feature access for one command stream.
  86  * If enable == TRUE, return TRUE on success.
  87  * Otherwise, return FALSE.
  88  *
  89  * We basically do the same thing kernel does, because we have to deal
  90  * with multiple contexts (here command streams) backed by one winsys. */
  91 static boolean radeon_set_fd_access(struct radeon_drm_cs *applier,
  92                                     struct radeon_drm_cs **owner,
  93                                     pipe_mutex *mutex,
  94                                     unsigned request, boolean enable)
  95 {
  96     struct drm_radeon_info info;
  97     unsigned value = enable ? 1 : 0;
  98
  99     memset(&info, 0, sizeof(info));
 100
 101     pipe_mutex_lock(*mutex);
 102
 103     /* Early exit if we are sure the request will fail. */
 104     if (enable) {
 105         if (*owner) {
 106             pipe_mutex_unlock(*mutex);
 107             return FALSE;
 108         }
 109     } else {
 110         if (*owner != applier) {
 111             pipe_mutex_unlock(*mutex);
 112             return FALSE;
 113         }
 114     }
 115
 116     /* Pass through the request to the kernel. */
 117     info.value = (unsigned long)&value;
 118     info.request = request;
 119     if (drmCommandWriteRead(applier->ws->fd, DRM_RADEON_INFO,
 120                             &info, sizeof(info)) != 0) {
 121         pipe_mutex_unlock(*mutex);
 122         return FALSE;
 123     }
 124
 125     /* Update the rights in the winsys. */
 126     if (enable) {
 127         if (value) {
 128             *owner = applier;
 129             fprintf(stderr, "radeon: Acquired Hyper-Z.\n");
 130             pipe_mutex_unlock(*mutex);
 131             return TRUE;
 132         }
 133     } else {
 134         *owner = NULL;
 135         fprintf(stderr, "radeon: Released Hyper-Z.\n");
 136     }
 137
 138     pipe_mutex_unlock(*mutex);
 139     return FALSE;
 140 }
 141
 142 static boolean radeon_get_drm_value(int fd, unsigned request,
 143                                     const char *errname, uint32_t *out)
 144 {
 145     struct drm_radeon_info info;
 146     int retval;
 147
 148     memset(&info, 0, sizeof(info));
 149
 150     info.value = (unsigned long)out;
 151     info.request = request;
 152
 153     retval = drmCommandWriteRead(fd, DRM_RADEON_INFO, &info, sizeof(info));
 154     if (retval) {
 155         if (errname) {
 156             fprintf(stderr, "radeon: Failed to get %s, error number %d\n",
 157                     errname, retval);
 158         }
 159         return FALSE;
 160     }
 161     return TRUE;
 162 }
 163
 164 /* Helper function to do the ioctls needed for setup and init. */
 165 static boolean do_winsys_init(struct radeon_drm_winsys *ws)
 166 {
 167     struct drm_radeon_gem_info gem_info;
 168     int retval;
 169     drmVersionPtr version;
 170
 171     memset(&gem_info, 0, sizeof(gem_info));
 172
 173     /* We do things in a specific order here.
 174      *
 175      * DRM version first. We need to be sure we're running on a KMS chipset.
 176      * This is also for some features.
 177      *
 178      * Then, the PCI ID. This is essential and should return usable numbers
 179      * for all Radeons. If this fails, we probably got handed an FD for some
 180      * non-Radeon card.
 181      *
 182      * The GEM info is actually bogus on the kernel side, as well as our side
 183      * (see radeon_gem_info_ioctl in radeon_gem.c) but that's alright because
 184      * we don't actually use the info for anything yet.
 185      *
 186      * The GB and Z pipe requests should always succeed, but they might not
 187      * return sensical values for all chipsets, but that's alright because
 188      * the pipe drivers already know that.
 189      */
 190
 191     /* Get DRM version. */
 192     version = drmGetVersion(ws->fd);
 193     if (version->version_major != 2 ||
 194         version->version_minor < 3) {
 195         fprintf(stderr, "%s: DRM version is %d.%d.%d but this driver is "
 196                 "only compatible with 2.3.x (kernel 2.6.34) or later.\n",
 197                 __FUNCTION__,
 198                 version->version_major,
 199                 version->version_minor,
 200                 version->version_patchlevel);
 201         drmFreeVersion(version);
 202         return FALSE;
 203     }
 204
 205     ws->info.drm_major = version->version_major;
 206     ws->info.drm_minor = version->version_minor;
 207     ws->info.drm_patchlevel = version->version_patchlevel;
 208     drmFreeVersion(version);
 209
 210     /* Get PCI ID. */
 211     if (!radeon_get_drm_value(ws->fd, RADEON_INFO_DEVICE_ID, "PCI ID",
 212                               &ws->info.pci_id))
 213         return FALSE;
 214
 215     /* Check PCI ID. */
 216     switch (ws->info.pci_id) {
 217 #define CHIPSET(pci_id, name, family) case pci_id:
 218 #include "pci_ids/r300_pci_ids.h"
 219 #undef CHIPSET
 220         ws->gen = R300;
 221         break;
 222
 223 #define CHIPSET(pci_id, name, family) case pci_id:
 224 #include "pci_ids/r600_pci_ids.h"
 225 #undef CHIPSET
 226         ws->gen = R600;
 227         break;
 228
 229 #define CHIPSET(pci_id, name, family) case pci_id:
 230 #include "pci_ids/radeonsi_pci_ids.h"
 231 #undef CHIPSET
 232         ws->gen = SI;
 233         break;
 234
 235     default:
 236         fprintf(stderr, "radeon: Invalid PCI ID.\n");
 237         return FALSE;
 238     }
 239
 240     /* Get GEM info. */
 241     retval = drmCommandWriteRead(ws->fd, DRM_RADEON_GEM_INFO,
 242             &gem_info, sizeof(gem_info));
 243     if (retval) {
 244         fprintf(stderr, "radeon: Failed to get MM info, error number %d\n",
 245                 retval);
 246         return FALSE;
 247     }
 248     ws->info.gart_size = gem_info.gart_size;
 249     ws->info.vram_size = gem_info.vram_size;
 250
 251     ws->num_cpus = sysconf(_SC_NPROCESSORS_ONLN);
 252
 253     /* Generation-specific queries. */
 254     if (ws->gen == R300) {
 255         if (!radeon_get_drm_value(ws->fd, RADEON_INFO_NUM_GB_PIPES,
 256                                   "GB pipe count",
 257                                   &ws->info.r300_num_gb_pipes))
 258             return FALSE;
 259
 260         if (!radeon_get_drm_value(ws->fd, RADEON_INFO_NUM_Z_PIPES,
 261                                   "Z pipe count",
 262                                   &ws->info.r300_num_z_pipes))
 263             return FALSE;
 264     }
 265     else if (ws->gen >= R600) {
 266         if (ws->info.drm_minor >= 9 &&
 267             !radeon_get_drm_value(ws->fd, RADEON_INFO_NUM_BACKENDS,
 268                                   "num backends",
 269                                   &ws->info.r600_num_backends))
 270             return FALSE;
 271
 272         /* get the GPU counter frequency, failure is not fatal */
 273         radeon_get_drm_value(ws->fd, RADEON_INFO_CLOCK_CRYSTAL_FREQ, NULL,
 274                              &ws->info.r600_clock_crystal_freq);
 275
 276         radeon_get_drm_value(ws->fd, RADEON_INFO_TILING_CONFIG, NULL,
 277                              &ws->info.r600_tiling_config);
 278
 279         if (ws->info.drm_minor >= 11) {
 280             radeon_get_drm_value(ws->fd, RADEON_INFO_NUM_TILE_PIPES, NULL,
 281                                  &ws->info.r600_num_tile_pipes);
 282
 283             if (radeon_get_drm_value(ws->fd, RADEON_INFO_BACKEND_MAP, NULL,
 284                                       &ws->info.r600_backend_map))
 285                 ws->info.r600_backend_map_valid = TRUE;
 286         }
 287
 288         ws->info.r600_virtual_address = FALSE;
 289         if (ws->info.drm_minor >= 13) {
 290             ws->info.r600_virtual_address = TRUE;
 291             if (!radeon_get_drm_value(ws->fd, RADEON_INFO_VA_START, NULL,
 292                                       &ws->info.r600_va_start))
 293                 ws->info.r600_virtual_address = FALSE;
 294             if (!radeon_get_drm_value(ws->fd, RADEON_INFO_IB_VM_MAX_SIZE, NULL,
 295                                       &ws->info.r600_ib_vm_max_size))
 296                 ws->info.r600_virtual_address = FALSE;
 297         }
 298
 299         ws->info.r600_has_streamout = ws->info.drm_minor >= 13;
 300     }
 301
 302     return TRUE;
 303 }
 304
 305 static void radeon_winsys_destroy(struct radeon_winsys *rws)
 306 {
 307     struct radeon_drm_winsys *ws = (struct radeon_drm_winsys*)rws;
 308
 309     pipe_mutex_destroy(ws->hyperz_owner_mutex);
 310     pipe_mutex_destroy(ws->cmask_owner_mutex);
 311
 312     ws->cman->destroy(ws->cman);
 313     ws->kman->destroy(ws->kman);
 314     if (ws->gen == R600) {
 315         radeon_surface_manager_free(ws->surf_man);
 316     }
 317     FREE(rws);
 318 }
 319
 320 static void radeon_query_info(struct radeon_winsys *rws,
 321                               struct radeon_info *info)
 322 {
 323     *info = ((struct radeon_drm_winsys *)rws)->info;
 324 }
 325
 326 static boolean radeon_cs_request_feature(struct radeon_winsys_cs *rcs,
 327                                          enum radeon_feature_id fid,
 328                                          boolean enable)
 329 {
 330     struct radeon_drm_cs *cs = radeon_drm_cs(rcs);
 331
 332     switch (fid) {
 333     case RADEON_FID_R300_HYPERZ_ACCESS:
 334         if (debug_get_bool_option("RADEON_HYPERZ", FALSE)) {
 335             return radeon_set_fd_access(cs, &cs->ws->hyperz_owner,
 336                                         &cs->ws->hyperz_owner_mutex,
 337                                         RADEON_INFO_WANT_HYPERZ, enable);
 338         } else {
 339             return FALSE;
 340         }
 341
 342     case RADEON_FID_R300_CMASK_ACCESS:
 343         if (debug_get_bool_option("RADEON_CMASK", FALSE)) {
 344             return radeon_set_fd_access(cs, &cs->ws->cmask_owner,
 345                                         &cs->ws->cmask_owner_mutex,
 346                                         RADEON_INFO_WANT_CMASK, enable);
 347         } else {
 348             return FALSE;
 349         }
 350     }
 351     return FALSE;
 352 }
 353
 354 static int radeon_drm_winsys_surface_init(struct radeon_winsys *rws,
 355                                           struct radeon_surface *surf)
 356 {
 357     struct radeon_drm_winsys *ws = (struct radeon_drm_winsys*)rws;
 358
 359     return radeon_surface_init(ws->surf_man, surf);
 360 }
 361
 362 static int radeon_drm_winsys_surface_best(struct radeon_winsys *rws,
 363                                           struct radeon_surface *surf)
 364 {
 365     struct radeon_drm_winsys *ws = (struct radeon_drm_winsys*)rws;
 366
 367     return radeon_surface_best(ws->surf_man, surf);
 368 }
 369
 370 struct radeon_winsys *radeon_drm_winsys_create(int fd)
 371 {
 372     struct radeon_drm_winsys *ws = CALLOC_STRUCT(radeon_drm_winsys);
 373     if (!ws) {
 374         return NULL;
 375     }
 376
 377     ws->fd = fd;
 378
 379     if (!do_winsys_init(ws))
 380         goto fail;
 381
 382     /* Create managers. */
 383     ws->kman = radeon_bomgr_create(ws);
 384     if (!ws->kman)
 385         goto fail;
 386     ws->cman = pb_cache_manager_create(ws->kman, 1000000);
 387     if (!ws->cman)
 388         goto fail;
 389
 390     /* FIXME check for libdrm version ?? */
 391     if (ws->gen == R600) {
 392         ws->surf_man = radeon_surface_manager_new(fd);
 393         if (!ws->surf_man)
 394             goto fail;
 395     }
 396
 397     /* Set functions. */
 398     ws->base.destroy = radeon_winsys_destroy;
 399     ws->base.query_info = radeon_query_info;
 400     ws->base.cs_request_feature = radeon_cs_request_feature;
 401     ws->base.surface_init = radeon_drm_winsys_surface_init;
 402     ws->base.surface_best = radeon_drm_winsys_surface_best;
 403
 404     radeon_bomgr_init_functions(ws);
 405     radeon_drm_cs_init_functions(ws);
 406
 407     pipe_mutex_init(ws->hyperz_owner_mutex);
 408     pipe_mutex_init(ws->cmask_owner_mutex);
 409
 410     return &ws->base;
 411
 412 fail:
 413     if (ws->cman)
 414         ws->cman->destroy(ws->cman);
 415     if (ws->kman)
 416         ws->kman->destroy(ws->kman);
 417     if (ws->surf_man)
 418         radeon_surface_manager_free(ws->surf_man);
 419     FREE(ws);
 420     return NULL;
 421 }