src/gallium/winsys/amdgpu/drm/amdgpu_winsys.c

   1 /*
   2  * Copyright © 2009 Corbin Simpson <MostAwesomeDude@gmail.com>
   3  * Copyright © 2009 Joakim Sindholt <opensource@zhasha.com>
   4  * Copyright © 2011 Marek Olšák <maraeo@gmail.com>
   5  * Copyright © 2015 Advanced Micro Devices, Inc.
   6  * All Rights Reserved.
   7  *
   8  * Permission is hereby granted, free of charge, to any person obtaining
   9  * a copy of this software and associated documentation files (the
  10  * "Software"), to deal in the Software without restriction, including
  11  * without limitation the rights to use, copy, modify, merge, publish,
  12  * distribute, sub license, and/or sell copies of the Software, and to
  13  * permit persons to whom the Software is furnished to do so, subject to
  14  * the following conditions:
  15  *
  16  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
  17  * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES
  18  * OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
  19  * NON-INFRINGEMENT. IN NO EVENT SHALL THE COPYRIGHT HOLDERS, AUTHORS
  20  * AND/OR ITS SUPPLIERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
  21  * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
  22  * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE
  23  * USE OR OTHER DEALINGS IN THE SOFTWARE.
  24  *
  25  * The above copyright notice and this permission notice (including the
  26  * next paragraph) shall be included in all copies or substantial portions
  27  * of the Software.
  28  */
  29 /*
  30  * Authors:
  31  *      Marek Olšák <maraeo@gmail.com>
  32  */
  33
  34 #include "amdgpu_cs.h"
  35 #include "amdgpu_public.h"
  36
  37 #include "util/u_hash_table.h"
  38 #include <amdgpu_drm.h>
  39 #include <xf86drm.h>
  40 #include <stdio.h>
  41 #include <sys/stat.h>
  42 #include "amdgpu_id.h"
  43
  44 #define CIK_TILE_MODE_COLOR_2D                  14
  45
  46 #define CIK__GB_TILE_MODE__PIPE_CONFIG(x)        (((x) >> 6) & 0x1f)
  47 #define     CIK__PIPE_CONFIG__ADDR_SURF_P2               0
  48 #define     CIK__PIPE_CONFIG__ADDR_SURF_P4_8x16          4
  49 #define     CIK__PIPE_CONFIG__ADDR_SURF_P4_16x16         5
  50 #define     CIK__PIPE_CONFIG__ADDR_SURF_P4_16x32         6
  51 #define     CIK__PIPE_CONFIG__ADDR_SURF_P4_32x32         7
  52 #define     CIK__PIPE_CONFIG__ADDR_SURF_P8_16x16_8x16    8
  53 #define     CIK__PIPE_CONFIG__ADDR_SURF_P8_16x32_8x16    9
  54 #define     CIK__PIPE_CONFIG__ADDR_SURF_P8_32x32_8x16    10
  55 #define     CIK__PIPE_CONFIG__ADDR_SURF_P8_16x32_16x16   11
  56 #define     CIK__PIPE_CONFIG__ADDR_SURF_P8_32x32_16x16   12
  57 #define     CIK__PIPE_CONFIG__ADDR_SURF_P8_32x32_16x32   13
  58 #define     CIK__PIPE_CONFIG__ADDR_SURF_P8_32x64_32x32   14
  59 #define     CIK__PIPE_CONFIG__ADDR_SURF_P16_32X32_8X16   16
  60 #define     CIK__PIPE_CONFIG__ADDR_SURF_P16_32X32_16X16  17
  61
  62 #ifndef AMDGPU_INFO_NUM_EVICTIONS
  63 #define AMDGPU_INFO_NUM_EVICTIONS               0x18
  64 #endif
  65
  66 static struct util_hash_table *dev_tab = NULL;
  67 pipe_static_mutex(dev_tab_mutex);
  68
  69 static unsigned cik_get_num_tile_pipes(struct amdgpu_gpu_info *info)
  70 {
  71    unsigned mode2d = info->gb_tile_mode[CIK_TILE_MODE_COLOR_2D];
  72
  73    switch (CIK__GB_TILE_MODE__PIPE_CONFIG(mode2d)) {
  74    case CIK__PIPE_CONFIG__ADDR_SURF_P2:
  75        return 2;
  76    case CIK__PIPE_CONFIG__ADDR_SURF_P4_8x16:
  77    case CIK__PIPE_CONFIG__ADDR_SURF_P4_16x16:
  78    case CIK__PIPE_CONFIG__ADDR_SURF_P4_16x32:
  79    case CIK__PIPE_CONFIG__ADDR_SURF_P4_32x32:
  80        return 4;
  81    case CIK__PIPE_CONFIG__ADDR_SURF_P8_16x16_8x16:
  82    case CIK__PIPE_CONFIG__ADDR_SURF_P8_16x32_8x16:
  83    case CIK__PIPE_CONFIG__ADDR_SURF_P8_32x32_8x16:
  84    case CIK__PIPE_CONFIG__ADDR_SURF_P8_16x32_16x16:
  85    case CIK__PIPE_CONFIG__ADDR_SURF_P8_32x32_16x16:
  86    case CIK__PIPE_CONFIG__ADDR_SURF_P8_32x32_16x32:
  87    case CIK__PIPE_CONFIG__ADDR_SURF_P8_32x64_32x32:
  88        return 8;
  89    case CIK__PIPE_CONFIG__ADDR_SURF_P16_32X32_8X16:
  90    case CIK__PIPE_CONFIG__ADDR_SURF_P16_32X32_16X16:
  91        return 16;
  92    default:
  93        fprintf(stderr, "Invalid CIK pipe configuration, assuming P2\n");
  94        assert(!"this should never occur");
  95        return 2;
  96    }
  97 }
  98
  99 /* Helper function to do the ioctls needed for setup and init. */
 100 static bool do_winsys_init(struct amdgpu_winsys *ws, int fd)
 101 {
 102    struct amdgpu_buffer_size_alignments alignment_info = {};
 103    struct amdgpu_heap_info vram, gtt;
 104    struct drm_amdgpu_info_hw_ip dma = {}, uvd = {}, vce = {};
 105    uint32_t vce_version = 0, vce_feature = 0, uvd_version = 0, uvd_feature = 0;
 106    uint32_t unused_feature;
 107    int r, i, j;
 108    drmDevicePtr devinfo;
 109
 110    /* Get PCI info. */
 111    r = drmGetDevice(fd, &devinfo);
 112    if (r) {
 113       fprintf(stderr, "amdgpu: drmGetDevice failed.\n");
 114       goto fail;
 115    }
 116    ws->info.pci_domain = devinfo->businfo.pci->domain;
 117    ws->info.pci_bus = devinfo->businfo.pci->bus;
 118    ws->info.pci_dev = devinfo->businfo.pci->dev;
 119    ws->info.pci_func = devinfo->businfo.pci->func;
 120    drmFreeDevice(&devinfo);
 121
 122    /* Query hardware and driver information. */
 123    r = amdgpu_query_gpu_info(ws->dev, &ws->amdinfo);
 124    if (r) {
 125       fprintf(stderr, "amdgpu: amdgpu_query_gpu_info failed.\n");
 126       goto fail;
 127    }
 128
 129    r = amdgpu_query_buffer_size_alignment(ws->dev, &alignment_info);
 130    if (r) {
 131       fprintf(stderr, "amdgpu: amdgpu_query_buffer_size_alignment failed.\n");
 132       goto fail;
 133    }
 134
 135    r = amdgpu_query_heap_info(ws->dev, AMDGPU_GEM_DOMAIN_VRAM, 0, &vram);
 136    if (r) {
 137       fprintf(stderr, "amdgpu: amdgpu_query_heap_info(vram) failed.\n");
 138       goto fail;
 139    }
 140
 141    r = amdgpu_query_heap_info(ws->dev, AMDGPU_GEM_DOMAIN_GTT, 0, &gtt);
 142    if (r) {
 143       fprintf(stderr, "amdgpu: amdgpu_query_heap_info(gtt) failed.\n");
 144       goto fail;
 145    }
 146
 147    r = amdgpu_query_hw_ip_info(ws->dev, AMDGPU_HW_IP_DMA, 0, &dma);
 148    if (r) {
 149       fprintf(stderr, "amdgpu: amdgpu_query_hw_ip_info(dma) failed.\n");
 150       goto fail;
 151    }
 152
 153    r = amdgpu_query_hw_ip_info(ws->dev, AMDGPU_HW_IP_UVD, 0, &uvd);
 154    if (r) {
 155       fprintf(stderr, "amdgpu: amdgpu_query_hw_ip_info(uvd) failed.\n");
 156       goto fail;
 157    }
 158
 159    r = amdgpu_query_firmware_version(ws->dev, AMDGPU_INFO_FW_GFX_ME, 0, 0,
 160                                      &ws->info.me_fw_version, &unused_feature);
 161    if (r) {
 162       fprintf(stderr, "amdgpu: amdgpu_query_firmware_version(me) failed.\n");
 163       goto fail;
 164    }
 165
 166    r = amdgpu_query_firmware_version(ws->dev, AMDGPU_INFO_FW_GFX_PFP, 0, 0,
 167                                      &ws->info.pfp_fw_version, &unused_feature);
 168    if (r) {
 169       fprintf(stderr, "amdgpu: amdgpu_query_firmware_version(pfp) failed.\n");
 170       goto fail;
 171    }
 172
 173    r = amdgpu_query_firmware_version(ws->dev, AMDGPU_INFO_FW_GFX_CE, 0, 0,
 174                                      &ws->info.ce_fw_version, &unused_feature);
 175    if (r) {
 176       fprintf(stderr, "amdgpu: amdgpu_query_firmware_version(ce) failed.\n");
 177       goto fail;
 178    }
 179
 180    r = amdgpu_query_firmware_version(ws->dev, AMDGPU_INFO_FW_UVD, 0, 0,
 181                                      &uvd_version, &uvd_feature);
 182    if (r) {
 183       fprintf(stderr, "amdgpu: amdgpu_query_firmware_version(uvd) failed.\n");
 184       goto fail;
 185    }
 186
 187    r = amdgpu_query_hw_ip_info(ws->dev, AMDGPU_HW_IP_VCE, 0, &vce);
 188    if (r) {
 189       fprintf(stderr, "amdgpu: amdgpu_query_hw_ip_info(vce) failed.\n");
 190       goto fail;
 191    }
 192
 193    r = amdgpu_query_firmware_version(ws->dev, AMDGPU_INFO_FW_VCE, 0, 0,
 194                                      &vce_version, &vce_feature);
 195    if (r) {
 196       fprintf(stderr, "amdgpu: amdgpu_query_firmware_version(vce) failed.\n");
 197       goto fail;
 198    }
 199
 200    /* Set chip identification. */
 201    ws->info.pci_id = ws->amdinfo.asic_id; /* TODO: is this correct? */
 202    ws->info.vce_harvest_config = ws->amdinfo.vce_harvest_config;
 203
 204    switch (ws->info.pci_id) {
 205 #define CHIPSET(pci_id, name, cfamily) case pci_id: ws->info.family = CHIP_##cfamily; break;
 206 #include "pci_ids/radeonsi_pci_ids.h"
 207 #undef CHIPSET
 208
 209    default:
 210       fprintf(stderr, "amdgpu: Invalid PCI ID.\n");
 211       goto fail;
 212    }
 213
 214    if (ws->info.family >= CHIP_TONGA)
 215       ws->info.chip_class = VI;
 216    else if (ws->info.family >= CHIP_BONAIRE)
 217       ws->info.chip_class = CIK;
 218    else if (ws->info.family >= CHIP_TAHITI)
 219       ws->info.chip_class = SI;
 220    else {
 221       fprintf(stderr, "amdgpu: Unknown family.\n");
 222       goto fail;
 223    }
 224
 225    /* LLVM 3.6.1 is required for VI. */
 226    if (ws->info.chip_class >= VI &&
 227        HAVE_LLVM == 0x0306 && MESA_LLVM_VERSION_PATCH < 1) {
 228       fprintf(stderr, "amdgpu: LLVM 3.6.1 is required, got LLVM %i.%i.%i\n",
 229               HAVE_LLVM >> 8, HAVE_LLVM & 255, MESA_LLVM_VERSION_PATCH);
 230       goto fail;
 231    }
 232
 233    /* family and rev_id are for addrlib */
 234    switch (ws->info.family) {
 235    case CHIP_TAHITI:
 236       ws->family = FAMILY_SI;
 237       ws->rev_id = SI_TAHITI_P_A0;
 238       break;
 239    case CHIP_PITCAIRN:
 240       ws->family = FAMILY_SI;
 241       ws->rev_id = SI_PITCAIRN_PM_A0;
 242       break;
 243    case CHIP_VERDE:
 244       ws->family = FAMILY_SI;
 245       ws->rev_id = SI_CAPEVERDE_M_A0;
 246       break;
 247    case CHIP_OLAND:
 248       ws->family = FAMILY_SI;
 249       ws->rev_id = SI_OLAND_M_A0;
 250       break;
 251    case CHIP_HAINAN:
 252       ws->family = FAMILY_SI;
 253       ws->rev_id = SI_HAINAN_V_A0;
 254       break;
 255    case CHIP_BONAIRE:
 256       ws->family = FAMILY_CI;
 257       ws->rev_id = CI_BONAIRE_M_A0;
 258       break;
 259    case CHIP_KAVERI:
 260       ws->family = FAMILY_KV;
 261       ws->rev_id = KV_SPECTRE_A0;
 262       break;
 263    case CHIP_KABINI:
 264       ws->family = FAMILY_KV;
 265       ws->rev_id = KB_KALINDI_A0;
 266       break;
 267    case CHIP_HAWAII:
 268       ws->family = FAMILY_CI;
 269       ws->rev_id = CI_HAWAII_P_A0;
 270       break;
 271    case CHIP_MULLINS:
 272       ws->family = FAMILY_KV;
 273       ws->rev_id = ML_GODAVARI_A0;
 274       break;
 275    case CHIP_TONGA:
 276       ws->family = FAMILY_VI;
 277       ws->rev_id = VI_TONGA_P_A0;
 278       break;
 279    case CHIP_ICELAND:
 280       ws->family = FAMILY_VI;
 281       ws->rev_id = VI_ICELAND_M_A0;
 282       break;
 283    case CHIP_CARRIZO:
 284       ws->family = FAMILY_CZ;
 285       ws->rev_id = CARRIZO_A0;
 286       break;
 287    case CHIP_STONEY:
 288       ws->family = FAMILY_CZ;
 289       ws->rev_id = STONEY_A0;
 290       break;
 291    case CHIP_FIJI:
 292       ws->family = FAMILY_VI;
 293       ws->rev_id = VI_FIJI_P_A0;
 294       break;
 295    case CHIP_POLARIS10:
 296       ws->family = FAMILY_VI;
 297       ws->rev_id = VI_POLARIS10_P_A0;
 298       break;
 299    case CHIP_POLARIS11:
 300       ws->family = FAMILY_VI;
 301       ws->rev_id = VI_POLARIS11_M_A0;
 302       break;
 303    default:
 304       fprintf(stderr, "amdgpu: Unknown family.\n");
 305       goto fail;
 306    }
 307
 308    ws->addrlib = amdgpu_addr_create(ws);
 309    if (!ws->addrlib) {
 310       fprintf(stderr, "amdgpu: Cannot create addrlib.\n");
 311       goto fail;
 312    }
 313
 314    /* Set which chips have dedicated VRAM. */
 315    ws->info.has_dedicated_vram =
 316       !(ws->amdinfo.ids_flags & AMDGPU_IDS_FLAGS_FUSION);
 317
 318    /* Set hardware information. */
 319    ws->info.gart_size = gtt.heap_size;
 320    ws->info.vram_size = vram.heap_size;
 321    /* TODO: the kernel reports vram/gart.max_allocation == 251 MB (bug?) */
 322    ws->info.max_alloc_size = MAX2(ws->info.vram_size, ws->info.gart_size);
 323    /* convert the shader clock from KHz to MHz */
 324    ws->info.max_shader_clock = ws->amdinfo.max_engine_clk / 1000;
 325    ws->info.max_se = ws->amdinfo.num_shader_engines;
 326    ws->info.max_sh_per_se = ws->amdinfo.num_shader_arrays_per_engine;
 327    ws->info.has_uvd = uvd.available_rings != 0;
 328    ws->info.uvd_fw_version =
 329          uvd.available_rings ? uvd_version : 0;
 330    ws->info.vce_fw_version =
 331          vce.available_rings ? vce_version : 0;
 332    ws->info.has_userptr = true;
 333    ws->info.num_render_backends = ws->amdinfo.rb_pipes;
 334    ws->info.clock_crystal_freq = ws->amdinfo.gpu_counter_freq;
 335    ws->info.num_tile_pipes = cik_get_num_tile_pipes(&ws->amdinfo);
 336    ws->info.pipe_interleave_bytes = 256 << ((ws->amdinfo.gb_addr_cfg >> 4) & 0x7);
 337    ws->info.has_virtual_memory = true;
 338    ws->info.has_sdma = dma.available_rings != 0;
 339
 340    /* Get the number of good compute units. */
 341    ws->info.num_good_compute_units = 0;
 342    for (i = 0; i < ws->info.max_se; i++)
 343       for (j = 0; j < ws->info.max_sh_per_se; j++)
 344          ws->info.num_good_compute_units +=
 345             util_bitcount(ws->amdinfo.cu_bitmap[i][j]);
 346
 347    memcpy(ws->info.si_tile_mode_array, ws->amdinfo.gb_tile_mode,
 348           sizeof(ws->amdinfo.gb_tile_mode));
 349    ws->info.enabled_rb_mask = ws->amdinfo.enabled_rb_pipes_mask;
 350
 351    memcpy(ws->info.cik_macrotile_mode_array, ws->amdinfo.gb_macro_tile_mode,
 352           sizeof(ws->amdinfo.gb_macro_tile_mode));
 353
 354    ws->info.gart_page_size = alignment_info.size_remote;
 355
 356    if (ws->info.chip_class == SI)
 357       ws->info.gfx_ib_pad_with_type2 = TRUE;
 358
 359    ws->check_vm = strstr(debug_get_option("R600_DEBUG", ""), "check_vm") != NULL;
 360
 361    return true;
 362
 363 fail:
 364    if (ws->addrlib)
 365       AddrDestroy(ws->addrlib);
 366    amdgpu_device_deinitialize(ws->dev);
 367    ws->dev = NULL;
 368    return false;
 369 }
 370
 371 static void amdgpu_winsys_destroy(struct radeon_winsys *rws)
 372 {
 373    struct amdgpu_winsys *ws = (struct amdgpu_winsys*)rws;
 374
 375    if (util_queue_is_initialized(&ws->cs_queue))
 376       util_queue_destroy(&ws->cs_queue);
 377
 378    pipe_mutex_destroy(ws->bo_fence_lock);
 379    pb_cache_deinit(&ws->bo_cache);
 380    pipe_mutex_destroy(ws->global_bo_list_lock);
 381    AddrDestroy(ws->addrlib);
 382    amdgpu_device_deinitialize(ws->dev);
 383    FREE(rws);
 384 }
 385
 386 static void amdgpu_winsys_query_info(struct radeon_winsys *rws,
 387                                      struct radeon_info *info)
 388 {
 389    *info = ((struct amdgpu_winsys *)rws)->info;
 390 }
 391
 392 static bool amdgpu_cs_request_feature(struct radeon_winsys_cs *rcs,
 393                                       enum radeon_feature_id fid,
 394                                       bool enable)
 395 {
 396    return false;
 397 }
 398
 399 static uint64_t amdgpu_query_value(struct radeon_winsys *rws,
 400                                    enum radeon_value_id value)
 401 {
 402    struct amdgpu_winsys *ws = (struct amdgpu_winsys*)rws;
 403    struct amdgpu_heap_info heap;
 404    uint64_t retval = 0;
 405
 406    switch (value) {
 407    case RADEON_REQUESTED_VRAM_MEMORY:
 408       return ws->allocated_vram;
 409    case RADEON_REQUESTED_GTT_MEMORY:
 410       return ws->allocated_gtt;
 411    case RADEON_MAPPED_VRAM:
 412       return ws->mapped_vram;
 413    case RADEON_MAPPED_GTT:
 414       return ws->mapped_gtt;
 415    case RADEON_BUFFER_WAIT_TIME_NS:
 416       return ws->buffer_wait_time;
 417    case RADEON_TIMESTAMP:
 418       amdgpu_query_info(ws->dev, AMDGPU_INFO_TIMESTAMP, 8, &retval);
 419       return retval;
 420    case RADEON_NUM_CS_FLUSHES:
 421       return ws->num_cs_flushes;
 422    case RADEON_NUM_BYTES_MOVED:
 423       amdgpu_query_info(ws->dev, AMDGPU_INFO_NUM_BYTES_MOVED, 8, &retval);
 424       return retval;
 425    case RADEON_NUM_EVICTIONS:
 426       amdgpu_query_info(ws->dev, AMDGPU_INFO_NUM_EVICTIONS, 8, &retval);
 427       return retval;
 428    case RADEON_VRAM_USAGE:
 429       amdgpu_query_heap_info(ws->dev, AMDGPU_GEM_DOMAIN_VRAM, 0, &heap);
 430       return heap.heap_usage;
 431    case RADEON_GTT_USAGE:
 432       amdgpu_query_heap_info(ws->dev, AMDGPU_GEM_DOMAIN_GTT, 0, &heap);
 433       return heap.heap_usage;
 434    case RADEON_GPU_TEMPERATURE:
 435    case RADEON_CURRENT_SCLK:
 436    case RADEON_CURRENT_MCLK:
 437       return 0;
 438    case RADEON_GPU_RESET_COUNTER:
 439       assert(0);
 440       return 0;
 441    }
 442    return 0;
 443 }
 444
 445 static bool amdgpu_read_registers(struct radeon_winsys *rws,
 446                                   unsigned reg_offset,
 447                                   unsigned num_registers, uint32_t *out)
 448 {
 449    struct amdgpu_winsys *ws = (struct amdgpu_winsys*)rws;
 450
 451    return amdgpu_read_mm_registers(ws->dev, reg_offset / 4, num_registers,
 452                                    0xffffffff, 0, out) == 0;
 453 }
 454
 455 static unsigned hash_dev(void *key)
 456 {
 457 #if defined(PIPE_ARCH_X86_64)
 458    return pointer_to_intptr(key) ^ (pointer_to_intptr(key) >> 32);
 459 #else
 460    return pointer_to_intptr(key);
 461 #endif
 462 }
 463
 464 static int compare_dev(void *key1, void *key2)
 465 {
 466    return key1 != key2;
 467 }
 468
 469 DEBUG_GET_ONCE_BOOL_OPTION(thread, "RADEON_THREAD", true)
 470
 471 static bool amdgpu_winsys_unref(struct radeon_winsys *rws)
 472 {
 473    struct amdgpu_winsys *ws = (struct amdgpu_winsys*)rws;
 474    bool destroy;
 475
 476    /* When the reference counter drops to zero, remove the device pointer
 477     * from the table.
 478     * This must happen while the mutex is locked, so that
 479     * amdgpu_winsys_create in another thread doesn't get the winsys
 480     * from the table when the counter drops to 0. */
 481    pipe_mutex_lock(dev_tab_mutex);
 482
 483    destroy = pipe_reference(&ws->reference, NULL);
 484    if (destroy && dev_tab)
 485       util_hash_table_remove(dev_tab, ws->dev);
 486
 487    pipe_mutex_unlock(dev_tab_mutex);
 488    return destroy;
 489 }
 490
 491 PUBLIC struct radeon_winsys *
 492 amdgpu_winsys_create(int fd, radeon_screen_create_t screen_create)
 493 {
 494    struct amdgpu_winsys *ws;
 495    drmVersionPtr version = drmGetVersion(fd);
 496    amdgpu_device_handle dev;
 497    uint32_t drm_major, drm_minor, r;
 498
 499    /* The DRM driver version of amdgpu is 3.x.x. */
 500    if (version->version_major != 3) {
 501       drmFreeVersion(version);
 502       return NULL;
 503    }
 504    drmFreeVersion(version);
 505
 506    /* Look up the winsys from the dev table. */
 507    pipe_mutex_lock(dev_tab_mutex);
 508    if (!dev_tab)
 509       dev_tab = util_hash_table_create(hash_dev, compare_dev);
 510
 511    /* Initialize the amdgpu device. This should always return the same pointer
 512     * for the same fd. */
 513    r = amdgpu_device_initialize(fd, &drm_major, &drm_minor, &dev);
 514    if (r) {
 515       pipe_mutex_unlock(dev_tab_mutex);
 516       fprintf(stderr, "amdgpu: amdgpu_device_initialize failed.\n");
 517       return NULL;
 518    }
 519
 520    /* Lookup a winsys if we have already created one for this device. */
 521    ws = util_hash_table_get(dev_tab, dev);
 522    if (ws) {
 523       pipe_reference(NULL, &ws->reference);
 524       pipe_mutex_unlock(dev_tab_mutex);
 525       return &ws->base;
 526    }
 527
 528    /* Create a new winsys. */
 529    ws = CALLOC_STRUCT(amdgpu_winsys);
 530    if (!ws) {
 531       pipe_mutex_unlock(dev_tab_mutex);
 532       return NULL;
 533    }
 534
 535    ws->dev = dev;
 536    ws->info.drm_major = drm_major;
 537    ws->info.drm_minor = drm_minor;
 538
 539    if (!do_winsys_init(ws, fd))
 540       goto fail;
 541
 542    /* Create managers. */
 543    pb_cache_init(&ws->bo_cache, 500000, ws->check_vm ? 1.0f : 2.0f, 0,
 544                  (ws->info.vram_size + ws->info.gart_size) / 8,
 545                  amdgpu_bo_destroy, amdgpu_bo_can_reclaim);
 546
 547    /* init reference */
 548    pipe_reference_init(&ws->reference, 1);
 549
 550    /* Set functions. */
 551    ws->base.unref = amdgpu_winsys_unref;
 552    ws->base.destroy = amdgpu_winsys_destroy;
 553    ws->base.query_info = amdgpu_winsys_query_info;
 554    ws->base.cs_request_feature = amdgpu_cs_request_feature;
 555    ws->base.query_value = amdgpu_query_value;
 556    ws->base.read_registers = amdgpu_read_registers;
 557
 558    amdgpu_bo_init_functions(ws);
 559    amdgpu_cs_init_functions(ws);
 560    amdgpu_surface_init_functions(ws);
 561
 562    LIST_INITHEAD(&ws->global_bo_list);
 563    pipe_mutex_init(ws->global_bo_list_lock);
 564    pipe_mutex_init(ws->bo_fence_lock);
 565
 566    if (sysconf(_SC_NPROCESSORS_ONLN) > 1 && debug_get_option_thread())
 567       util_queue_init(&ws->cs_queue, "amdgpu_cs", 8, 1);
 568
 569    /* Create the screen at the end. The winsys must be initialized
 570     * completely.
 571     *
 572     * Alternatively, we could create the screen based on "ws->gen"
 573     * and link all drivers into one binary blob. */
 574    ws->base.screen = screen_create(&ws->base);
 575    if (!ws->base.screen) {
 576       amdgpu_winsys_destroy(&ws->base);
 577       pipe_mutex_unlock(dev_tab_mutex);
 578       return NULL;
 579    }
 580
 581    util_hash_table_set(dev_tab, dev, ws);
 582
 583    /* We must unlock the mutex once the winsys is fully initialized, so that
 584     * other threads attempting to create the winsys from the same fd will
 585     * get a fully initialized winsys and not just half-way initialized. */
 586    pipe_mutex_unlock(dev_tab_mutex);
 587
 588    return &ws->base;
 589
 590 fail:
 591    pipe_mutex_unlock(dev_tab_mutex);
 592    pb_cache_deinit(&ws->bo_cache);
 593    FREE(ws);
 594    return NULL;
 595 }