Exemple #1
0
void
mono_hwcap_arch_init (void)
{
#if defined(__linux__) && defined(HAVE_SYS_AUXV_H)
	unsigned long hwcap;
	unsigned long platform;

	if ((hwcap = getauxval(AT_HWCAP))) {
		/* PPC_FEATURE_ICACHE_SNOOP */
		if (hwcap & 0x00002000)
			mono_hwcap_ppc_has_icache_snoop = TRUE;

		/* PPC_FEATURE_POWER4, PPC_FEATURE_POWER5, PPC_FEATURE_POWER5_PLUS,
		   PPC_FEATURE_CELL_BE, PPC_FEATURE_PA6T, PPC_FEATURE_ARCH_2_05 */
		if (hwcap & (0x00080000 | 0x00040000 | 0x00020000 | 0x00010000 | 0x00000800 | 0x00001000))
			mono_hwcap_ppc_is_isa_2x = TRUE;

		/* PPC_FEATURE_POWER4, PPC_FEATURE_POWER5, PPC_FEATURE_POWER5_PLUS,
		   PPC_FEATURE_CELL_BE, PPC_FEATURE_PA6T, PPC_FEATURE_ARCH_2_05 */
		if (hwcap & (0x00080000 | 0x00040000 | 0x00020000 | 0x00010000 | 0x00000800 | 0x00001000))
			mono_hwcap_ppc_is_isa_2x = TRUE;

		/* PPC_FEATURE_POWER5, PPC_FEATURE_POWER5_PLUS,
		   PPC_FEATURE_CELL_BE, PPC_FEATURE_PA6T, PPC_FEATURE_ARCH_2_05 */
		if (hwcap & (0x00040000 | 0x00020000 | 0x00010000 | 0x00000800 | 0x00001000))
			mono_hwcap_ppc_is_isa_2_03 = TRUE;

		/* PPC_FEATURE_64 */
		if (hwcap & 0x40000000)
			mono_hwcap_ppc_is_isa_64 = TRUE;

		/* PPC_FEATURE_POWER6_EXT */
		if (hwcap & 0x00000200)
			mono_hwcap_ppc_has_move_fpr_gpr = TRUE;
	}

	if ((platform = getauxval(AT_PLATFORM))) {
		const char *str = (const char *) platform;

		if (!strcmp (str, "ppc970") || (!strncmp (str, "power", 5) && str [5] >= '4' && str [5] <= '7'))
			mono_hwcap_ppc_has_multiple_ls_units = TRUE;
	}
#elif defined(_AIX)
	/* Compatible platforms for Mono (V7R1, 6.1.9) require at least P4. */
	mono_hwcap_ppc_is_isa_64 = TRUE;
	mono_hwcap_ppc_is_isa_2x = TRUE;
	if (__power_5_andup()) {
		mono_hwcap_ppc_is_isa_2_03 = TRUE;
		mono_hwcap_ppc_has_icache_snoop = TRUE;
	}
	/* not on POWER8 */
	if (__power_4() || __power_5() || __power_6() || __power_7())
		mono_hwcap_ppc_has_multiple_ls_units = TRUE;
	/*
	 * This instruction is only available in POWER6 "raw mode" and unlikely
	 * to work; I couldn't get it to work on the POWER6s I tried.
	 */
	/*
	if (__power_6())
		mono_hwcap_ppc_has_move_fpr_gpr = TRUE;
	 */
#endif
}
Exemple #2
0
static void
look_rset(int sdl, hwloc_obj_type_t type, struct hwloc_topology *topology, int level)
{
  rsethandle_t rset, rad;
  int i,maxcpus,j;
  int nbnodes;
  struct hwloc_obj *obj;

  if ((topology->flags & HWLOC_TOPOLOGY_FLAG_WHOLE_SYSTEM))
    rset = rs_alloc(RS_ALL);
  else
    rset = rs_alloc(RS_PARTITION);
  rad = rs_alloc(RS_EMPTY);
  nbnodes = rs_numrads(rset, sdl, 0);
  if (nbnodes == -1) {
    perror("rs_numrads");
    return;
  }

  for (i = 0; i < nbnodes; i++) {
    hwloc_bitmap_t cpuset;
    unsigned os_index = (unsigned) -1; /* no os_index except for PU and NUMANODE below */

    if (rs_getrad(rset, rad, sdl, i, 0)) {
      fprintf(stderr,"rs_getrad(%d) failed: %s\n", i, strerror(errno));
      continue;
    }
    if (!rs_getinfo(rad, R_NUMPROCS, 0))
      continue;

    maxcpus = rs_getinfo(rad, R_MAXPROCS, 0);
    cpuset = hwloc_bitmap_alloc();
    for (j = 0; j < maxcpus; j++) {
      if (rs_op(RS_TESTRESOURCE, rad, NULL, R_PROCS, j))
	hwloc_bitmap_set(cpuset, j);
    }

    if (type == HWLOC_OBJ_PU) {
      os_index = hwloc_bitmap_first(cpuset);
      hwloc_debug("Found PU #%u inside node %d for sdl %d\n", os_index, i, sdl);
      assert(hwloc_bitmap_weight(cpuset) == 1);
    } else if (type == HWLOC_OBJ_NUMANODE) {
      /* NUMA node os_index isn't used for binding, just use the rad number to get unique values.
       * Note that we'll use that fact in hwloc_aix_prepare_membind(). */
      os_index = i;
      hwloc_debug("Using os_index #%u for NUMA node inside node %d for sdl %d\n", os_index, i, sdl);
    }

    obj = hwloc_alloc_setup_object(type, os_index);
    obj->cpuset = cpuset;
    obj->os_level = sdl;

    switch(type) {
      case HWLOC_OBJ_NUMANODE:
	obj->nodeset = hwloc_bitmap_alloc();
	hwloc_bitmap_set(obj->nodeset, i);
	obj->memory.local_memory = 0; /* TODO: odd, rs_getinfo(rad, R_MEMSIZE, 0) << 10 returns the total memory ... */
	obj->memory.page_types_len = 2;
	obj->memory.page_types = malloc(2*sizeof(*obj->memory.page_types));
	memset(obj->memory.page_types, 0, 2*sizeof(*obj->memory.page_types));
	obj->memory.page_types[0].size = hwloc_getpagesize();
#ifdef HAVE__SC_LARGE_PAGESIZE
	obj->memory.page_types[1].size = sysconf(_SC_LARGE_PAGESIZE);
#endif
	/* TODO: obj->memory.page_types[1].count = rs_getinfo(rset, R_LGPGFREE, 0) / hugepagesize */
	break;
      case HWLOC_OBJ_CACHE:
	obj->attr->cache.size = _system_configuration.L2_cache_size;
	obj->attr->cache.associativity = _system_configuration.L2_cache_asc;

	obj->attr->cache.linesize = 0; /* unknown by default */
	if (__power_pc())
	  if (__power_4() || __power_5() || __power_6() || __power_7())
	    obj->attr->cache.linesize = 128;

	obj->attr->cache.depth = 2;
	obj->attr->cache.type = HWLOC_OBJ_CACHE_UNIFIED; /* OK for power[4567], unknown for others */
	break;
      case HWLOC_OBJ_GROUP:
	obj->attr->group.depth = level;
	break;
      case HWLOC_OBJ_CORE:
      {
	hwloc_obj_t obj2, obj3;
	obj2 = hwloc_alloc_setup_object(HWLOC_OBJ_CACHE, i);
	obj2->cpuset = hwloc_bitmap_dup(obj->cpuset);
	obj2->attr->cache.size = _system_configuration.dcache_size;
	obj2->attr->cache.associativity = _system_configuration.dcache_asc;
	obj2->attr->cache.linesize = _system_configuration.dcache_line;
	obj2->attr->cache.depth = 1;
	if (_system_configuration.cache_attrib & (1<<30)) {
	  /* Unified cache */
	  obj2->attr->cache.type = HWLOC_OBJ_CACHE_UNIFIED;
	  hwloc_debug("Adding an L1u cache for core %d\n", i);
	  hwloc_insert_object_by_cpuset(topology, obj2);
	} else {
	  /* Separate Instruction and Data caches */
	  obj2->attr->cache.type = HWLOC_OBJ_CACHE_DATA;
	  hwloc_debug("Adding an L1d cache for core %d\n", i);
	  hwloc_insert_object_by_cpuset(topology, obj2);

	  obj3 = hwloc_alloc_setup_object(HWLOC_OBJ_CACHE, i);
	  obj3->cpuset = hwloc_bitmap_dup(obj->cpuset);
	  obj3->attr->cache.size = _system_configuration.icache_size;
	  obj3->attr->cache.associativity = _system_configuration.icache_asc;
	  obj3->attr->cache.linesize = _system_configuration.icache_line;
	  obj3->attr->cache.depth = 1;
	  obj3->attr->cache.type = HWLOC_OBJ_CACHE_INSTRUCTION;
	  hwloc_debug("Adding an L1i cache for core %d\n", i);
	  hwloc_insert_object_by_cpuset(topology, obj3);
	}
	break;
      }
      default:
	break;
    }
    hwloc_debug_2args_bitmap("%s %d has cpuset %s\n",
	       hwloc_obj_type_string(type),
	       i, obj->cpuset);
    hwloc_insert_object_by_cpuset(topology, obj);
  }

  rs_free(rset);
  rs_free(rad);
}