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 #include "util/u_hash_table.h"
  41
  42 #include <xf86drm.h>
  43 #include <stdio.h>
  44 #include <sys/types.h>
  45 #include <sys/stat.h>
  46 #include <unistd.h>
  47
  48 static struct util_hash_table *fd_tab = NULL;
  49 pipe_static_mutex(fd_tab_mutex);
  50
  51 /* Enable/disable feature access for one command stream.
  52  * If enable == TRUE, return TRUE on success.
  53  * Otherwise, return FALSE.
  54  *
  55  * We basically do the same thing kernel does, because we have to deal
  56  * with multiple contexts (here command streams) backed by one winsys. */
  57 static boolean radeon_set_fd_access(struct radeon_drm_cs *applier,
  58                                     struct radeon_drm_cs **owner,
  59                                     pipe_mutex *mutex,
  60                                     unsigned request, const char *request_name,
  61                                     boolean enable)
  62 {
  63     struct drm_radeon_info info;
  64     unsigned value = enable ? 1 : 0;
  65
  66     memset(&info, 0, sizeof(info));
  67
  68     pipe_mutex_lock(*mutex);
  69
  70     /* Early exit if we are sure the request will fail. */
  71     if (enable) {
  72         if (*owner) {
  73             pipe_mutex_unlock(*mutex);
  74             return FALSE;
  75         }
  76     } else {
  77         if (*owner != applier) {
  78             pipe_mutex_unlock(*mutex);
  79             return FALSE;
  80         }
  81     }
  82
  83     /* Pass through the request to the kernel. */
  84     info.value = (unsigned long)&value;
  85     info.request = request;
  86     if (drmCommandWriteRead(applier->ws->fd, DRM_RADEON_INFO,
  87                             &info, sizeof(info)) != 0) {
  88         pipe_mutex_unlock(*mutex);
  89         return FALSE;
  90     }
  91
  92     /* Update the rights in the winsys. */
  93     if (enable) {
  94         if (value) {
  95             *owner = applier;
  96             printf("radeon: Acquired access to %s.\n", request_name);
  97             pipe_mutex_unlock(*mutex);
  98             return TRUE;
  99         }
 100     } else {
 101         *owner = NULL;
 102         printf("radeon: Released access to %s.\n", request_name);
 103     }
 104
 105     pipe_mutex_unlock(*mutex);
 106     return FALSE;
 107 }
 108
 109 static boolean radeon_get_drm_value(int fd, unsigned request,
 110                                     const char *errname, uint32_t *out)
 111 {
 112     struct drm_radeon_info info;
 113     int retval;
 114
 115     memset(&info, 0, sizeof(info));
 116
 117     info.value = (unsigned long)out;
 118     info.request = request;
 119
 120     retval = drmCommandWriteRead(fd, DRM_RADEON_INFO, &info, sizeof(info));
 121     if (retval) {
 122         if (errname) {
 123             fprintf(stderr, "radeon: Failed to get %s, error number %d\n",
 124                     errname, retval);
 125         }
 126         return FALSE;
 127     }
 128     return TRUE;
 129 }
 130
 131 /* Helper function to do the ioctls needed for setup and init. */
 132 static boolean do_winsys_init(struct radeon_drm_winsys *ws)
 133 {
 134     struct drm_radeon_gem_info gem_info;
 135     int retval;
 136     drmVersionPtr version;
 137
 138     memset(&gem_info, 0, sizeof(gem_info));
 139
 140     /* We do things in a specific order here.
 141      *
 142      * DRM version first. We need to be sure we're running on a KMS chipset.
 143      * This is also for some features.
 144      *
 145      * Then, the PCI ID. This is essential and should return usable numbers
 146      * for all Radeons. If this fails, we probably got handed an FD for some
 147      * non-Radeon card.
 148      *
 149      * The GEM info is actually bogus on the kernel side, as well as our side
 150      * (see radeon_gem_info_ioctl in radeon_gem.c) but that's alright because
 151      * we don't actually use the info for anything yet.
 152      *
 153      * The GB and Z pipe requests should always succeed, but they might not
 154      * return sensical values for all chipsets, but that's alright because
 155      * the pipe drivers already know that.
 156      */
 157
 158     /* Get DRM version. */
 159     version = drmGetVersion(ws->fd);
 160     if (version->version_major != 2 ||
 161         version->version_minor < 3) {
 162         fprintf(stderr, "%s: DRM version is %d.%d.%d but this driver is "
 163                 "only compatible with 2.3.x (kernel 2.6.34) or later.\n",
 164                 __FUNCTION__,
 165                 version->version_major,
 166                 version->version_minor,
 167                 version->version_patchlevel);
 168         drmFreeVersion(version);
 169         return FALSE;
 170     }
 171
 172     ws->info.drm_major = version->version_major;
 173     ws->info.drm_minor = version->version_minor;
 174     ws->info.drm_patchlevel = version->version_patchlevel;
 175     drmFreeVersion(version);
 176
 177     /* Get PCI ID. */
 178     if (!radeon_get_drm_value(ws->fd, RADEON_INFO_DEVICE_ID, "PCI ID",
 179                               &ws->info.pci_id))
 180         return FALSE;
 181
 182     /* Check PCI ID. */
 183     switch (ws->info.pci_id) {
 184 #define CHIPSET(pci_id, name, cfamily) case pci_id: ws->info.family = CHIP_##cfamily; ws->gen = DRV_R300; break;
 185 #include "pci_ids/r300_pci_ids.h"
 186 #undef CHIPSET
 187
 188 #define CHIPSET(pci_id, name, cfamily) case pci_id: ws->info.family = CHIP_##cfamily; ws->gen = DRV_R600; break;
 189 #include "pci_ids/r600_pci_ids.h"
 190 #undef CHIPSET
 191
 192 #define CHIPSET(pci_id, name, cfamily) case pci_id: ws->info.family = CHIP_##cfamily; ws->gen = DRV_SI; break;
 193 #include "pci_ids/radeonsi_pci_ids.h"
 194 #undef CHIPSET
 195
 196     default:
 197         fprintf(stderr, "radeon: Invalid PCI ID.\n");
 198         return FALSE;
 199     }
 200
 201     switch (ws->info.family) {
 202     default:
 203     case CHIP_UNKNOWN:
 204         fprintf(stderr, "radeon: Unknown family.\n");
 205         return FALSE;
 206     case CHIP_R300:
 207     case CHIP_R350:
 208     case CHIP_RV350:
 209     case CHIP_RV370:
 210     case CHIP_RV380:
 211     case CHIP_RS400:
 212     case CHIP_RC410:
 213     case CHIP_RS480:
 214         ws->info.chip_class = R300;
 215         break;
 216     case CHIP_R420:     /* R4xx-based cores. */
 217     case CHIP_R423:
 218     case CHIP_R430:
 219     case CHIP_R480:
 220     case CHIP_R481:
 221     case CHIP_RV410:
 222     case CHIP_RS600:
 223     case CHIP_RS690:
 224     case CHIP_RS740:
 225         ws->info.chip_class = R400;
 226         break;
 227     case CHIP_RV515:    /* R5xx-based cores. */
 228     case CHIP_R520:
 229     case CHIP_RV530:
 230     case CHIP_R580:
 231     case CHIP_RV560:
 232     case CHIP_RV570:
 233         ws->info.chip_class = R500;
 234         break;
 235     case CHIP_R600:
 236     case CHIP_RV610:
 237     case CHIP_RV630:
 238     case CHIP_RV670:
 239     case CHIP_RV620:
 240     case CHIP_RV635:
 241     case CHIP_RS780:
 242     case CHIP_RS880:
 243         ws->info.chip_class = R600;
 244         break;
 245     case CHIP_RV770:
 246     case CHIP_RV730:
 247     case CHIP_RV710:
 248     case CHIP_RV740:
 249         ws->info.chip_class = R700;
 250         break;
 251     case CHIP_CEDAR:
 252     case CHIP_REDWOOD:
 253     case CHIP_JUNIPER:
 254     case CHIP_CYPRESS:
 255     case CHIP_HEMLOCK:
 256     case CHIP_PALM:
 257     case CHIP_SUMO:
 258     case CHIP_SUMO2:
 259     case CHIP_BARTS:
 260     case CHIP_TURKS:
 261     case CHIP_CAICOS:
 262         ws->info.chip_class = EVERGREEN;
 263         break;
 264     case CHIP_CAYMAN:
 265     case CHIP_ARUBA:
 266         ws->info.chip_class = CAYMAN;
 267         break;
 268     case CHIP_TAHITI:
 269     case CHIP_PITCAIRN:
 270     case CHIP_VERDE:
 271     case CHIP_OLAND:
 272     case CHIP_HAINAN:
 273         ws->info.chip_class = SI;
 274         break;
 275     case CHIP_BONAIRE:
 276     case CHIP_KAVERI:
 277     case CHIP_KABINI:
 278     case CHIP_HAWAII:
 279         ws->info.chip_class = CIK;
 280         break;
 281     }
 282
 283     /* Check for dma */
 284     ws->info.r600_has_dma = FALSE;
 285     if (ws->info.chip_class >= R700 && ws->info.drm_minor >= 27) {
 286         ws->info.r600_has_dma = TRUE;
 287     }
 288
 289     /* Check for UVD and VCE */
 290     ws->info.has_uvd = FALSE;
 291     ws->info.vce_fw_version = 0x00000000;
 292     if (ws->info.drm_minor >= 32) {
 293         uint32_t value = RADEON_CS_RING_UVD;
 294         if (radeon_get_drm_value(ws->fd, RADEON_INFO_RING_WORKING,
 295                                  "UVD Ring working", &value))
 296             ws->info.has_uvd = value;
 297
 298         value = RADEON_CS_RING_VCE;
 299         if (radeon_get_drm_value(ws->fd, RADEON_INFO_RING_WORKING,
 300                                  NULL, &value) && value) {
 301
 302             if (radeon_get_drm_value(ws->fd, RADEON_INFO_VCE_FW_VERSION,
 303                                      "VCE FW version", &value))
 304                 ws->info.vce_fw_version = value;
 305         }
 306     }
 307
 308     /* Get GEM info. */
 309     retval = drmCommandWriteRead(ws->fd, DRM_RADEON_GEM_INFO,
 310             &gem_info, sizeof(gem_info));
 311     if (retval) {
 312         fprintf(stderr, "radeon: Failed to get MM info, error number %d\n",
 313                 retval);
 314         return FALSE;
 315     }
 316     ws->info.gart_size = gem_info.gart_size;
 317     ws->info.vram_size = gem_info.vram_size;
 318
 319     ws->num_cpus = sysconf(_SC_NPROCESSORS_ONLN);
 320
 321     /* Generation-specific queries. */
 322     if (ws->gen == DRV_R300) {
 323         if (!radeon_get_drm_value(ws->fd, RADEON_INFO_NUM_GB_PIPES,
 324                                   "GB pipe count",
 325                                   &ws->info.r300_num_gb_pipes))
 326             return FALSE;
 327
 328         if (!radeon_get_drm_value(ws->fd, RADEON_INFO_NUM_Z_PIPES,
 329                                   "Z pipe count",
 330                                   &ws->info.r300_num_z_pipes))
 331             return FALSE;
 332     }
 333     else if (ws->gen >= DRV_R600) {
 334         if (ws->info.drm_minor >= 9 &&
 335             !radeon_get_drm_value(ws->fd, RADEON_INFO_NUM_BACKENDS,
 336                                   "num backends",
 337                                   &ws->info.r600_num_backends))
 338             return FALSE;
 339
 340         /* get the GPU counter frequency, failure is not fatal */
 341         radeon_get_drm_value(ws->fd, RADEON_INFO_CLOCK_CRYSTAL_FREQ, NULL,
 342                              &ws->info.r600_clock_crystal_freq);
 343
 344         radeon_get_drm_value(ws->fd, RADEON_INFO_TILING_CONFIG, NULL,
 345                              &ws->info.r600_tiling_config);
 346
 347         if (ws->info.drm_minor >= 11) {
 348             radeon_get_drm_value(ws->fd, RADEON_INFO_NUM_TILE_PIPES, NULL,
 349                                  &ws->info.r600_num_tile_pipes);
 350
 351             if (radeon_get_drm_value(ws->fd, RADEON_INFO_BACKEND_MAP, NULL,
 352                                       &ws->info.r600_backend_map))
 353                 ws->info.r600_backend_map_valid = TRUE;
 354         }
 355
 356         ws->info.r600_virtual_address = FALSE;
 357         if (ws->info.drm_minor >= 13) {
 358             uint32_t ib_vm_max_size;
 359
 360             ws->info.r600_virtual_address = TRUE;
 361             if (!radeon_get_drm_value(ws->fd, RADEON_INFO_VA_START, NULL,
 362                                       &ws->va_start))
 363                 ws->info.r600_virtual_address = FALSE;
 364             if (!radeon_get_drm_value(ws->fd, RADEON_INFO_IB_VM_MAX_SIZE, NULL,
 365                                       &ib_vm_max_size))
 366                 ws->info.r600_virtual_address = FALSE;
 367         }
 368         if (ws->gen == DRV_R600 && !debug_get_bool_option("RADEON_VA", FALSE))
 369                 ws->info.r600_virtual_address = FALSE;
 370     }
 371
 372     /* Get max pipes, this is only needed for compute shaders.  All evergreen+
 373      * chips have at least 2 pipes, so we use 2 as a default. */
 374     ws->info.r600_max_pipes = 2;
 375     radeon_get_drm_value(ws->fd, RADEON_INFO_MAX_PIPES, NULL,
 376                          &ws->info.r600_max_pipes);
 377
 378     if (radeon_get_drm_value(ws->fd, RADEON_INFO_SI_TILE_MODE_ARRAY, NULL,
 379                              ws->info.si_tile_mode_array)) {
 380         ws->info.si_tile_mode_array_valid = TRUE;
 381     }
 382
 383     if (radeon_get_drm_value(ws->fd, RADEON_INFO_CIK_MACROTILE_MODE_ARRAY, NULL,
 384                              ws->info.cik_macrotile_mode_array)) {
 385         ws->info.cik_macrotile_mode_array_valid = TRUE;
 386     }
 387
 388     return TRUE;
 389 }
 390
 391 static void radeon_winsys_destroy(struct radeon_winsys *rws)
 392 {
 393     struct radeon_drm_winsys *ws = (struct radeon_drm_winsys*)rws;
 394
 395     if (ws->thread) {
 396         ws->kill_thread = 1;
 397         pipe_semaphore_signal(&ws->cs_queued);
 398         pipe_thread_wait(ws->thread);
 399     }
 400     pipe_semaphore_destroy(&ws->cs_queued);
 401
 402     pipe_mutex_destroy(ws->hyperz_owner_mutex);
 403     pipe_mutex_destroy(ws->cmask_owner_mutex);
 404     pipe_mutex_destroy(ws->cs_stack_lock);
 405
 406     ws->cman->destroy(ws->cman);
 407     ws->kman->destroy(ws->kman);
 408     if (ws->gen >= DRV_R600) {
 409         radeon_surface_manager_free(ws->surf_man);
 410     }
 411     FREE(rws);
 412 }
 413
 414 static void radeon_query_info(struct radeon_winsys *rws,
 415                               struct radeon_info *info)
 416 {
 417     *info = ((struct radeon_drm_winsys *)rws)->info;
 418 }
 419
 420 static boolean radeon_cs_request_feature(struct radeon_winsys_cs *rcs,
 421                                          enum radeon_feature_id fid,
 422                                          boolean enable)
 423 {
 424     struct radeon_drm_cs *cs = radeon_drm_cs(rcs);
 425
 426     switch (fid) {
 427     case RADEON_FID_R300_HYPERZ_ACCESS:
 428         return radeon_set_fd_access(cs, &cs->ws->hyperz_owner,
 429                                     &cs->ws->hyperz_owner_mutex,
 430                                     RADEON_INFO_WANT_HYPERZ, "Hyper-Z",
 431                                     enable);
 432
 433     case RADEON_FID_R300_CMASK_ACCESS:
 434         return radeon_set_fd_access(cs, &cs->ws->cmask_owner,
 435                                     &cs->ws->cmask_owner_mutex,
 436                                     RADEON_INFO_WANT_CMASK, "AA optimizations",
 437                                     enable);
 438     }
 439     return FALSE;
 440 }
 441
 442 static int radeon_drm_winsys_surface_init(struct radeon_winsys *rws,
 443                                           struct radeon_surface *surf)
 444 {
 445     struct radeon_drm_winsys *ws = (struct radeon_drm_winsys*)rws;
 446
 447     return radeon_surface_init(ws->surf_man, surf);
 448 }
 449
 450 static int radeon_drm_winsys_surface_best(struct radeon_winsys *rws,
 451                                           struct radeon_surface *surf)
 452 {
 453     struct radeon_drm_winsys *ws = (struct radeon_drm_winsys*)rws;
 454
 455     return radeon_surface_best(ws->surf_man, surf);
 456 }
 457
 458 static uint64_t radeon_query_value(struct radeon_winsys *rws,
 459                                    enum radeon_value_id value)
 460 {
 461     struct radeon_drm_winsys *ws = (struct radeon_drm_winsys*)rws;
 462     uint64_t retval = 0;
 463
 464     switch (value) {
 465     case RADEON_REQUESTED_VRAM_MEMORY:
 466         return ws->allocated_vram;
 467     case RADEON_REQUESTED_GTT_MEMORY:
 468         return ws->allocated_gtt;
 469     case RADEON_BUFFER_WAIT_TIME_NS:
 470         return ws->buffer_wait_time;
 471     case RADEON_TIMESTAMP:
 472         if (ws->info.drm_minor < 20 || ws->gen < DRV_R600) {
 473             assert(0);
 474             return 0;
 475         }
 476
 477         radeon_get_drm_value(ws->fd, RADEON_INFO_TIMESTAMP, "timestamp",
 478                              (uint32_t*)&retval);
 479         return retval;
 480     case RADEON_NUM_CS_FLUSHES:
 481         return ws->num_cs_flushes;
 482     case RADEON_NUM_BYTES_MOVED:
 483         radeon_get_drm_value(ws->fd, RADEON_INFO_NUM_BYTES_MOVED,
 484                              "num-bytes-moved", (uint32_t*)&retval);
 485         return retval;
 486     case RADEON_VRAM_USAGE:
 487         radeon_get_drm_value(ws->fd, RADEON_INFO_VRAM_USAGE,
 488                              "vram-usage", (uint32_t*)&retval);
 489         return retval;
 490     case RADEON_GTT_USAGE:
 491         radeon_get_drm_value(ws->fd, RADEON_INFO_GTT_USAGE,
 492                              "gtt-usage", (uint32_t*)&retval);
 493         return retval;
 494     }
 495     return 0;
 496 }
 497
 498 static unsigned hash_fd(void *key)
 499 {
 500     int fd = pointer_to_intptr(key);
 501     struct stat stat;
 502     fstat(fd, &stat);
 503
 504     return stat.st_dev ^ stat.st_ino ^ stat.st_rdev;
 505 }
 506
 507 static int compare_fd(void *key1, void *key2)
 508 {
 509     int fd1 = pointer_to_intptr(key1);
 510     int fd2 = pointer_to_intptr(key2);
 511     struct stat stat1, stat2;
 512     fstat(fd1, &stat1);
 513     fstat(fd2, &stat2);
 514
 515     return stat1.st_dev != stat2.st_dev ||
 516            stat1.st_ino != stat2.st_ino ||
 517            stat1.st_rdev != stat2.st_rdev;
 518 }
 519
 520 void radeon_drm_ws_queue_cs(struct radeon_drm_winsys *ws, struct radeon_drm_cs *cs)
 521 {
 522 retry:
 523     pipe_mutex_lock(ws->cs_stack_lock);
 524     if (ws->ncs >= RING_LAST) {
 525         /* no room left for a flush */
 526         pipe_mutex_unlock(ws->cs_stack_lock);
 527         goto retry;
 528     }
 529     ws->cs_stack[ws->ncs++] = cs;
 530     pipe_mutex_unlock(ws->cs_stack_lock);
 531     pipe_semaphore_signal(&ws->cs_queued);
 532 }
 533
 534 static PIPE_THREAD_ROUTINE(radeon_drm_cs_emit_ioctl, param)
 535 {
 536     struct radeon_drm_winsys *ws = (struct radeon_drm_winsys *)param;
 537     struct radeon_drm_cs *cs;
 538     unsigned i;
 539
 540     while (1) {
 541         pipe_semaphore_wait(&ws->cs_queued);
 542         if (ws->kill_thread)
 543             break;
 544
 545         pipe_mutex_lock(ws->cs_stack_lock);
 546         cs = ws->cs_stack[0];
 547         for (i = 1; i < ws->ncs; i++)
 548             ws->cs_stack[i - 1] = ws->cs_stack[i];
 549         ws->cs_stack[--ws->ncs] = NULL;
 550         pipe_mutex_unlock(ws->cs_stack_lock);
 551
 552         if (cs) {
 553             radeon_drm_cs_emit_ioctl_oneshot(cs, cs->cst);
 554             pipe_semaphore_signal(&cs->flush_completed);
 555         }
 556     }
 557     pipe_mutex_lock(ws->cs_stack_lock);
 558     for (i = 0; i < ws->ncs; i++) {
 559         pipe_semaphore_signal(&ws->cs_stack[i]->flush_completed);
 560         ws->cs_stack[i] = NULL;
 561     }
 562     ws->ncs = 0;
 563     pipe_mutex_unlock(ws->cs_stack_lock);
 564     return 0;
 565 }
 566
 567 DEBUG_GET_ONCE_BOOL_OPTION(thread, "RADEON_THREAD", TRUE)
 568 static PIPE_THREAD_ROUTINE(radeon_drm_cs_emit_ioctl, param);
 569
 570 static bool radeon_winsys_unref(struct radeon_winsys *ws)
 571 {
 572     struct radeon_drm_winsys *rws = (struct radeon_drm_winsys*)ws;
 573     bool destroy;
 574
 575     /* When the reference counter drops to zero, remove the fd from the table.
 576      * This must happen while the mutex is locked, so that
 577      * radeon_drm_winsys_create in another thread doesn't get the winsys
 578      * from the table when the counter drops to 0. */
 579     pipe_mutex_lock(fd_tab_mutex);
 580
 581     destroy = pipe_reference(&rws->reference, NULL);
 582     if (destroy && fd_tab)
 583         util_hash_table_remove(fd_tab, intptr_to_pointer(rws->fd));
 584
 585     pipe_mutex_unlock(fd_tab_mutex);
 586     return destroy;
 587 }
 588
 589 PUBLIC struct radeon_winsys *radeon_drm_winsys_create(int fd)
 590 {
 591     struct radeon_drm_winsys *ws;
 592
 593     pipe_mutex_lock(fd_tab_mutex);
 594     if (!fd_tab) {
 595         fd_tab = util_hash_table_create(hash_fd, compare_fd);
 596     }
 597
 598     ws = util_hash_table_get(fd_tab, intptr_to_pointer(fd));
 599     if (ws) {
 600         pipe_reference(NULL, &ws->reference);
 601         pipe_mutex_unlock(fd_tab_mutex);
 602         return &ws->base;
 603     }
 604
 605     ws = CALLOC_STRUCT(radeon_drm_winsys);
 606     if (!ws) {
 607         pipe_mutex_unlock(fd_tab_mutex);
 608         return NULL;
 609     }
 610
 611     ws->fd = fd;
 612     util_hash_table_set(fd_tab, intptr_to_pointer(fd), ws);
 613
 614     if (!do_winsys_init(ws))
 615         goto fail;
 616
 617     /* Create managers. */
 618     ws->kman = radeon_bomgr_create(ws);
 619     if (!ws->kman)
 620         goto fail;
 621     ws->cman = pb_cache_manager_create(ws->kman, 1000000, 2.0f, 0);
 622     if (!ws->cman)
 623         goto fail;
 624
 625     if (ws->gen >= DRV_R600) {
 626         ws->surf_man = radeon_surface_manager_new(fd);
 627         if (!ws->surf_man)
 628             goto fail;
 629     }
 630
 631     /* init reference */
 632     pipe_reference_init(&ws->reference, 1);
 633
 634     /* Set functions. */
 635     ws->base.unref = radeon_winsys_unref;
 636     ws->base.destroy = radeon_winsys_destroy;
 637     ws->base.query_info = radeon_query_info;
 638     ws->base.cs_request_feature = radeon_cs_request_feature;
 639     ws->base.surface_init = radeon_drm_winsys_surface_init;
 640     ws->base.surface_best = radeon_drm_winsys_surface_best;
 641     ws->base.query_value = radeon_query_value;
 642
 643     radeon_bomgr_init_functions(ws);
 644     radeon_drm_cs_init_functions(ws);
 645
 646     pipe_mutex_init(ws->hyperz_owner_mutex);
 647     pipe_mutex_init(ws->cmask_owner_mutex);
 648     pipe_mutex_init(ws->cs_stack_lock);
 649
 650     ws->ncs = 0;
 651     pipe_semaphore_init(&ws->cs_queued, 0);
 652     if (ws->num_cpus > 1 && debug_get_option_thread())
 653         ws->thread = pipe_thread_create(radeon_drm_cs_emit_ioctl, ws);
 654
 655     /* We must unlock the mutex once the winsys is fully initialized, so that
 656      * other threads attempting to create the winsys from the same fd will
 657      * get a fully initialized winsys and not just half-way initialized. */
 658     pipe_mutex_unlock(fd_tab_mutex);
 659
 660     return &ws->base;
 661
 662 fail:
 663     pipe_mutex_unlock(fd_tab_mutex);
 664     if (ws->cman)
 665         ws->cman->destroy(ws->cman);
 666     if (ws->kman)
 667         ws->kman->destroy(ws->kman);
 668     if (ws->surf_man)
 669         radeon_surface_manager_free(ws->surf_man);
 670     FREE(ws);
 671     return NULL;
 672 }