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 #include "amdgpu_cs.h"
  31 #include "amdgpu_public.h"
  32
  33 #include "util/u_cpu_detect.h"
  34 #include "util/u_hash_table.h"
  35 #include "util/hash_table.h"
  36 #include "util/xmlconfig.h"
  37 #include <amdgpu_drm.h>
  38 #include <xf86drm.h>
  39 #include <stdio.h>
  40 #include <sys/stat.h>
  41 #include <fcntl.h>
  42 #include "ac_llvm_util.h"
  43 #include "sid.h"
  44
  45 #ifndef AMDGPU_INFO_NUM_VRAM_CPU_PAGE_FAULTS
  46 #define AMDGPU_INFO_NUM_VRAM_CPU_PAGE_FAULTS    0x1E
  47 #endif
  48
  49 static struct util_hash_table *dev_tab = NULL;
  50 static simple_mtx_t dev_tab_mutex = _SIMPLE_MTX_INITIALIZER_NP;
  51
  52 DEBUG_GET_ONCE_BOOL_OPTION(all_bos, "RADEON_ALL_BOS", false)
  53
  54 static void handle_env_var_force_family(struct amdgpu_winsys *ws)
  55 {
  56       const char *family = debug_get_option("SI_FORCE_FAMILY", NULL);
  57       unsigned i;
  58
  59       if (!family)
  60                return;
  61
  62       for (i = CHIP_TAHITI; i < CHIP_LAST; i++) {
  63          if (!strcmp(family, ac_get_llvm_processor_name(i))) {
  64             /* Override family and chip_class. */
  65             ws->info.family = i;
  66             ws->info.name = "GCN-NOOP";
  67
  68             if (i >= CHIP_NAVI10)
  69                ws->info.chip_class = GFX10;
  70             else if (i >= CHIP_VEGA10)
  71                ws->info.chip_class = GFX9;
  72             else if (i >= CHIP_TONGA)
  73                ws->info.chip_class = GFX8;
  74             else if (i >= CHIP_BONAIRE)
  75                ws->info.chip_class = GFX7;
  76             else
  77                ws->info.chip_class = GFX6;
  78
  79             /* Don't submit any IBs. */
  80             setenv("RADEON_NOOP", "1", 1);
  81             return;
  82          }
  83       }
  84
  85       fprintf(stderr, "radeonsi: Unknown family: %s\n", family);
  86       exit(1);
  87 }
  88
  89 /* Helper function to do the ioctls needed for setup and init. */
  90 static bool do_winsys_init(struct amdgpu_winsys *ws,
  91                            const struct pipe_screen_config *config,
  92                            int fd)
  93 {
  94    if (!ac_query_gpu_info(fd, ws->dev, &ws->info, &ws->amdinfo))
  95       goto fail;
  96
  97    /* TODO: Enable this once the kernel handles it efficiently. */
  98    if (ws->info.has_dedicated_vram)
  99       ws->info.has_local_buffers = false;
 100
 101    handle_env_var_force_family(ws);
 102
 103    ws->addrlib = amdgpu_addr_create(&ws->info, &ws->amdinfo, &ws->info.max_alignment);
 104    if (!ws->addrlib) {
 105       fprintf(stderr, "amdgpu: Cannot create addrlib.\n");
 106       goto fail;
 107    }
 108
 109    ws->check_vm = strstr(debug_get_option("R600_DEBUG", ""), "check_vm") != NULL ||
 110                   strstr(debug_get_option("AMD_DEBUG", ""), "check_vm") != NULL;
 111    ws->debug_all_bos = debug_get_option_all_bos();
 112    ws->reserve_vmid = strstr(debug_get_option("R600_DEBUG", ""), "reserve_vmid") != NULL ||
 113                       strstr(debug_get_option("AMD_DEBUG", ""), "reserve_vmid") != NULL;
 114    ws->zero_all_vram_allocs = strstr(debug_get_option("R600_DEBUG", ""), "zerovram") != NULL ||
 115                               strstr(debug_get_option("AMD_DEBUG", ""), "zerovram") != NULL ||
 116                               driQueryOptionb(config->options, "radeonsi_zerovram");
 117
 118    return true;
 119
 120 fail:
 121    amdgpu_device_deinitialize(ws->dev);
 122    ws->dev = NULL;
 123    return false;
 124 }
 125
 126 static void do_winsys_deinit(struct amdgpu_winsys *ws)
 127 {
 128    if (ws->reserve_vmid)
 129       amdgpu_vm_unreserve_vmid(ws->dev, 0);
 130
 131    if (util_queue_is_initialized(&ws->cs_queue))
 132       util_queue_destroy(&ws->cs_queue);
 133
 134    simple_mtx_destroy(&ws->bo_fence_lock);
 135    for (unsigned i = 0; i < NUM_SLAB_ALLOCATORS; i++) {
 136       if (ws->bo_slabs[i].groups)
 137          pb_slabs_deinit(&ws->bo_slabs[i]);
 138    }
 139    pb_cache_deinit(&ws->bo_cache);
 140    util_hash_table_destroy(ws->bo_export_table);
 141    simple_mtx_destroy(&ws->global_bo_list_lock);
 142    simple_mtx_destroy(&ws->bo_export_table_lock);
 143
 144    AddrDestroy(ws->addrlib);
 145    amdgpu_device_deinitialize(ws->dev);
 146    FREE(ws);
 147 }
 148
 149 static void amdgpu_winsys_destroy(struct radeon_winsys *rws)
 150 {
 151    struct amdgpu_screen_winsys *sws = amdgpu_screen_winsys(rws);
 152    struct amdgpu_winsys *ws = sws->aws;
 153    bool destroy;
 154
 155    /* When the reference counter drops to zero, remove the device pointer
 156     * from the table.
 157     * This must happen while the mutex is locked, so that
 158     * amdgpu_winsys_create in another thread doesn't get the winsys
 159     * from the table when the counter drops to 0.
 160     */
 161    simple_mtx_lock(&dev_tab_mutex);
 162
 163    destroy = pipe_reference(&ws->reference, NULL);
 164    if (destroy && dev_tab) {
 165       util_hash_table_remove(dev_tab, ws->dev);
 166       if (util_hash_table_count(dev_tab) == 0) {
 167          util_hash_table_destroy(dev_tab);
 168          dev_tab = NULL;
 169       }
 170    }
 171
 172    simple_mtx_unlock(&dev_tab_mutex);
 173
 174    if (destroy)
 175       do_winsys_deinit(ws);
 176
 177    close(sws->fd);
 178    FREE(rws);
 179 }
 180
 181 static void amdgpu_winsys_query_info(struct radeon_winsys *rws,
 182                                      struct radeon_info *info)
 183 {
 184    *info = amdgpu_winsys(rws)->info;
 185 }
 186
 187 static bool amdgpu_cs_request_feature(struct radeon_cmdbuf *rcs,
 188                                       enum radeon_feature_id fid,
 189                                       bool enable)
 190 {
 191    return false;
 192 }
 193
 194 static uint64_t amdgpu_query_value(struct radeon_winsys *rws,
 195                                    enum radeon_value_id value)
 196 {
 197    struct amdgpu_winsys *ws = amdgpu_winsys(rws);
 198    struct amdgpu_heap_info heap;
 199    uint64_t retval = 0;
 200
 201    switch (value) {
 202    case RADEON_REQUESTED_VRAM_MEMORY:
 203       return ws->allocated_vram;
 204    case RADEON_REQUESTED_GTT_MEMORY:
 205       return ws->allocated_gtt;
 206    case RADEON_MAPPED_VRAM:
 207       return ws->mapped_vram;
 208    case RADEON_MAPPED_GTT:
 209       return ws->mapped_gtt;
 210    case RADEON_BUFFER_WAIT_TIME_NS:
 211       return ws->buffer_wait_time;
 212    case RADEON_NUM_MAPPED_BUFFERS:
 213       return ws->num_mapped_buffers;
 214    case RADEON_TIMESTAMP:
 215       amdgpu_query_info(ws->dev, AMDGPU_INFO_TIMESTAMP, 8, &retval);
 216       return retval;
 217    case RADEON_NUM_GFX_IBS:
 218       return ws->num_gfx_IBs;
 219    case RADEON_NUM_SDMA_IBS:
 220       return ws->num_sdma_IBs;
 221    case RADEON_GFX_BO_LIST_COUNTER:
 222       return ws->gfx_bo_list_counter;
 223    case RADEON_GFX_IB_SIZE_COUNTER:
 224       return ws->gfx_ib_size_counter;
 225    case RADEON_NUM_BYTES_MOVED:
 226       amdgpu_query_info(ws->dev, AMDGPU_INFO_NUM_BYTES_MOVED, 8, &retval);
 227       return retval;
 228    case RADEON_NUM_EVICTIONS:
 229       amdgpu_query_info(ws->dev, AMDGPU_INFO_NUM_EVICTIONS, 8, &retval);
 230       return retval;
 231    case RADEON_NUM_VRAM_CPU_PAGE_FAULTS:
 232       amdgpu_query_info(ws->dev, AMDGPU_INFO_NUM_VRAM_CPU_PAGE_FAULTS, 8, &retval);
 233       return retval;
 234    case RADEON_VRAM_USAGE:
 235       amdgpu_query_heap_info(ws->dev, AMDGPU_GEM_DOMAIN_VRAM, 0, &heap);
 236       return heap.heap_usage;
 237    case RADEON_VRAM_VIS_USAGE:
 238       amdgpu_query_heap_info(ws->dev, AMDGPU_GEM_DOMAIN_VRAM,
 239                              AMDGPU_GEM_CREATE_CPU_ACCESS_REQUIRED, &heap);
 240       return heap.heap_usage;
 241    case RADEON_GTT_USAGE:
 242       amdgpu_query_heap_info(ws->dev, AMDGPU_GEM_DOMAIN_GTT, 0, &heap);
 243       return heap.heap_usage;
 244    case RADEON_GPU_TEMPERATURE:
 245       amdgpu_query_sensor_info(ws->dev, AMDGPU_INFO_SENSOR_GPU_TEMP, 4, &retval);
 246       return retval;
 247    case RADEON_CURRENT_SCLK:
 248       amdgpu_query_sensor_info(ws->dev, AMDGPU_INFO_SENSOR_GFX_SCLK, 4, &retval);
 249       return retval;
 250    case RADEON_CURRENT_MCLK:
 251       amdgpu_query_sensor_info(ws->dev, AMDGPU_INFO_SENSOR_GFX_MCLK, 4, &retval);
 252       return retval;
 253    case RADEON_CS_THREAD_TIME:
 254       return util_queue_get_thread_time_nano(&ws->cs_queue, 0);
 255    }
 256    return 0;
 257 }
 258
 259 static bool amdgpu_read_registers(struct radeon_winsys *rws,
 260                                   unsigned reg_offset,
 261                                   unsigned num_registers, uint32_t *out)
 262 {
 263    struct amdgpu_winsys *ws = amdgpu_winsys(rws);
 264
 265    return amdgpu_read_mm_registers(ws->dev, reg_offset / 4, num_registers,
 266                                    0xffffffff, 0, out) == 0;
 267 }
 268
 269 static unsigned hash_pointer(void *key)
 270 {
 271    return _mesa_hash_pointer(key);
 272 }
 273
 274 static int compare_pointers(void *key1, void *key2)
 275 {
 276    return key1 != key2;
 277 }
 278
 279 static bool amdgpu_winsys_unref(struct radeon_winsys *rws)
 280 {
 281    /* radeon_winsys corresponds to amdgpu_screen_winsys, which is never
 282     * referenced multiple times, so amdgpu_winsys_destroy always needs to be
 283     * called. It handles reference counting for amdgpu_winsys.
 284     */
 285    return true;
 286 }
 287
 288 static void amdgpu_pin_threads_to_L3_cache(struct radeon_winsys *rws,
 289                                            unsigned cache)
 290 {
 291    struct amdgpu_winsys *ws = amdgpu_winsys(rws);
 292
 293    util_pin_thread_to_L3(ws->cs_queue.threads[0], cache,
 294                          util_cpu_caps.cores_per_L3);
 295 }
 296
 297 PUBLIC struct radeon_winsys *
 298 amdgpu_winsys_create(int fd, const struct pipe_screen_config *config,
 299                      radeon_screen_create_t screen_create)
 300 {
 301    struct amdgpu_screen_winsys *ws;
 302    struct amdgpu_winsys *aws;
 303    amdgpu_device_handle dev;
 304    uint32_t drm_major, drm_minor, r;
 305
 306    ws = CALLOC_STRUCT(amdgpu_screen_winsys);
 307    if (!ws)
 308       return NULL;
 309
 310    ws->fd = fcntl(fd, F_DUPFD_CLOEXEC, 0);
 311
 312    /* Look up the winsys from the dev table. */
 313    simple_mtx_lock(&dev_tab_mutex);
 314    if (!dev_tab)
 315       dev_tab = util_hash_table_create(hash_pointer, compare_pointers);
 316
 317    /* Initialize the amdgpu device. This should always return the same pointer
 318     * for the same fd. */
 319    r = amdgpu_device_initialize(fd, &drm_major, &drm_minor, &dev);
 320    if (r) {
 321       fprintf(stderr, "amdgpu: amdgpu_device_initialize failed.\n");
 322       goto fail;
 323    }
 324
 325    /* Lookup a winsys if we have already created one for this device. */
 326    aws = util_hash_table_get(dev_tab, dev);
 327    if (aws) {
 328       pipe_reference(NULL, &aws->reference);
 329       simple_mtx_unlock(&dev_tab_mutex);
 330
 331       /* Release the device handle, because we don't need it anymore.
 332        * This function is returning an existing winsys instance, which
 333        * has its own device handle.
 334        */
 335       amdgpu_device_deinitialize(dev);
 336    } else {
 337       /* Create a new winsys. */
 338       aws = CALLOC_STRUCT(amdgpu_winsys);
 339       if (!aws)
 340          goto fail;
 341
 342       aws->dev = dev;
 343       aws->info.drm_major = drm_major;
 344       aws->info.drm_minor = drm_minor;
 345
 346       if (!do_winsys_init(aws, config, fd))
 347          goto fail_alloc;
 348
 349       /* Create managers. */
 350       pb_cache_init(&aws->bo_cache, RADEON_MAX_CACHED_HEAPS,
 351                     500000, aws->check_vm ? 1.0f : 2.0f, 0,
 352                     (aws->info.vram_size + aws->info.gart_size) / 8,
 353                     amdgpu_bo_destroy, amdgpu_bo_can_reclaim);
 354
 355       unsigned min_slab_order = 9;  /* 512 bytes */
 356       unsigned max_slab_order = 18; /* 256 KB - higher numbers increase memory usage */
 357       unsigned num_slab_orders_per_allocator = (max_slab_order - min_slab_order) /
 358                                                NUM_SLAB_ALLOCATORS;
 359
 360       /* Divide the size order range among slab managers. */
 361       for (unsigned i = 0; i < NUM_SLAB_ALLOCATORS; i++) {
 362          unsigned min_order = min_slab_order;
 363          unsigned max_order = MIN2(min_order + num_slab_orders_per_allocator,
 364                                    max_slab_order);
 365
 366          if (!pb_slabs_init(&aws->bo_slabs[i],
 367                             min_order, max_order,
 368                             RADEON_MAX_SLAB_HEAPS,
 369                             aws,
 370                             amdgpu_bo_can_reclaim_slab,
 371                             amdgpu_bo_slab_alloc,
 372                             amdgpu_bo_slab_free)) {
 373             amdgpu_winsys_destroy(&ws->base);
 374             simple_mtx_unlock(&dev_tab_mutex);
 375             return NULL;
 376          }
 377
 378          min_slab_order = max_order + 1;
 379       }
 380
 381       aws->info.min_alloc_size = 1 << aws->bo_slabs[0].min_order;
 382
 383       /* init reference */
 384       pipe_reference_init(&aws->reference, 1);
 385
 386       list_inithead(&aws->global_bo_list);
 387       aws->bo_export_table = util_hash_table_create(hash_pointer, compare_pointers);
 388
 389       (void) simple_mtx_init(&aws->global_bo_list_lock, mtx_plain);
 390       (void) simple_mtx_init(&aws->bo_fence_lock, mtx_plain);
 391       (void) simple_mtx_init(&aws->bo_export_table_lock, mtx_plain);
 392
 393       if (!util_queue_init(&aws->cs_queue, "cs", 8, 1,
 394                            UTIL_QUEUE_INIT_RESIZE_IF_FULL)) {
 395          amdgpu_winsys_destroy(&ws->base);
 396          simple_mtx_unlock(&dev_tab_mutex);
 397          return NULL;
 398       }
 399
 400       util_hash_table_set(dev_tab, dev, aws);
 401
 402       if (aws->reserve_vmid) {
 403          r = amdgpu_vm_reserve_vmid(dev, 0);
 404          if (r) {
 405             amdgpu_winsys_destroy(&ws->base);
 406             simple_mtx_unlock(&dev_tab_mutex);
 407             return NULL;
 408          }
 409       }
 410    }
 411
 412    ws->aws = aws;
 413
 414    /* Set functions. */
 415    ws->base.unref = amdgpu_winsys_unref;
 416    ws->base.destroy = amdgpu_winsys_destroy;
 417    ws->base.query_info = amdgpu_winsys_query_info;
 418    ws->base.cs_request_feature = amdgpu_cs_request_feature;
 419    ws->base.query_value = amdgpu_query_value;
 420    ws->base.read_registers = amdgpu_read_registers;
 421    ws->base.pin_threads_to_L3_cache = amdgpu_pin_threads_to_L3_cache;
 422
 423    amdgpu_bo_init_functions(ws);
 424    amdgpu_cs_init_functions(ws);
 425    amdgpu_surface_init_functions(ws);
 426
 427    /* Create the screen at the end. The winsys must be initialized
 428     * completely.
 429     *
 430     * Alternatively, we could create the screen based on "ws->gen"
 431     * and link all drivers into one binary blob. */
 432    ws->base.screen = screen_create(&ws->base, config);
 433    if (!ws->base.screen) {
 434       amdgpu_winsys_destroy(&ws->base);
 435       simple_mtx_unlock(&dev_tab_mutex);
 436       return NULL;
 437    }
 438
 439    /* We must unlock the mutex once the winsys is fully initialized, so that
 440     * other threads attempting to create the winsys from the same fd will
 441     * get a fully initialized winsys and not just half-way initialized. */
 442    simple_mtx_unlock(&dev_tab_mutex);
 443
 444    return &ws->base;
 445
 446 fail_alloc:
 447    FREE(aws);
 448 fail:
 449    close(ws->fd);
 450    FREE(ws);
 451    simple_mtx_unlock(&dev_tab_mutex);
 452    return NULL;
 453 }