1 /* 2 * Copyright (c) 2006, 2014, Oracle and/or its affiliates. All rights reserved. 3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. 4 * 5 * This code is free software; you can redistribute it and/or modify it 6 * under the terms of the GNU General Public License version 2 only, as 7 * published by the Free Software Foundation. 8 * 9 * This code is distributed in the hope that it will be useful, but WITHOUT 10 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or 11 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License 12 * version 2 for more details (a copy is included in the LICENSE file that 13 * accompanied this code). 14 * 15 * You should have received a copy of the GNU General Public License version 16 * 2 along with this work; if not, write to the Free Software Foundation, 17 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. 18 * 19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA 20 * or visit www.oracle.com if you need additional information or have any 21 * questions. 22 * 23 */ 24 25 #include "precompiled.hpp" 26 #include "memory/allocation.hpp" 27 #include "memory/allocation.inline.hpp" 28 #include "runtime/os.hpp" 29 #include "vm_version_sparc.hpp" 30 31 #include <sys/auxv.h> 32 #include <sys/auxv_SPARC.h> 33 #include <sys/systeminfo.h> 34 #include <kstat.h> 35 #include <picl.h> 36 #include <dlfcn.h> 37 #include <link.h> 38 39 extern "C" static int PICL_visit_cpu_helper(picl_nodehdl_t nodeh, void *result); 40 41 // Functions from the library we need (signatures should match those in picl.h) 42 extern "C" { 43 typedef int (*picl_initialize_func_t)(void); 44 typedef int (*picl_shutdown_func_t)(void); 45 typedef int (*picl_get_root_func_t)(picl_nodehdl_t *nodehandle); 46 typedef int (*picl_walk_tree_by_class_func_t)(picl_nodehdl_t rooth, 47 const char *classname, void *c_args, 48 int (*callback_fn)(picl_nodehdl_t hdl, void *args)); 49 typedef int (*picl_get_prop_by_name_func_t)(picl_nodehdl_t nodeh, const char *nm, 50 picl_prophdl_t *ph); 51 typedef int (*picl_get_propval_func_t)(picl_prophdl_t proph, void *valbuf, size_t sz); 52 typedef int (*picl_get_propinfo_func_t)(picl_prophdl_t proph, picl_propinfo_t *pi); 53 } 54 55 class PICL { 56 // Pointers to functions in the library 57 picl_initialize_func_t _picl_initialize; 58 picl_shutdown_func_t _picl_shutdown; 59 picl_get_root_func_t _picl_get_root; 60 picl_walk_tree_by_class_func_t _picl_walk_tree_by_class; 61 picl_get_prop_by_name_func_t _picl_get_prop_by_name; 62 picl_get_propval_func_t _picl_get_propval; 63 picl_get_propinfo_func_t _picl_get_propinfo; 64 // Handle to the library that is returned by dlopen 65 void *_dl_handle; 66 67 bool open_library(); 68 void close_library(); 69 70 template<typename FuncType> bool bind(FuncType& func, const char* name); 71 bool bind_library_functions(); 72 73 // Get a value of the integer property. The value in the tree can be either 32 or 64 bit 74 // depending on the platform. The result is converted to int. 75 int get_int_property(picl_nodehdl_t nodeh, const char* name, int* result) { 76 picl_propinfo_t pinfo; 77 picl_prophdl_t proph; 78 if (_picl_get_prop_by_name(nodeh, name, &proph) != PICL_SUCCESS || 79 _picl_get_propinfo(proph, &pinfo) != PICL_SUCCESS) { 80 return PICL_FAILURE; 81 } 82 83 if (pinfo.type != PICL_PTYPE_INT && pinfo.type != PICL_PTYPE_UNSIGNED_INT) { 84 assert(false, "Invalid property type"); 85 return PICL_FAILURE; 86 } 87 if (pinfo.size == sizeof(int64_t)) { 88 int64_t val; 89 if (_picl_get_propval(proph, &val, sizeof(int64_t)) != PICL_SUCCESS) { 90 return PICL_FAILURE; 91 } 92 *result = static_cast<int>(val); 93 } else if (pinfo.size == sizeof(int32_t)) { 94 int32_t val; 95 if (_picl_get_propval(proph, &val, sizeof(int32_t)) != PICL_SUCCESS) { 96 return PICL_FAILURE; 97 } 98 *result = static_cast<int>(val); 99 } else { 100 assert(false, "Unexpected integer property size"); 101 return PICL_FAILURE; 102 } 103 return PICL_SUCCESS; 104 } 105 106 // Visitor and a state machine that visits integer properties and verifies that the 107 // values are the same. Stores the unique value observed. 108 class UniqueValueVisitor { 109 PICL *_picl; 110 enum { 111 INITIAL, // Start state, no assignments happened 112 ASSIGNED, // Assigned a value 113 INCONSISTENT // Inconsistent value seen 114 } _state; 115 int _value; 116 public: 117 UniqueValueVisitor(PICL* picl) : _picl(picl), _state(INITIAL) { } 118 int value() { 119 assert(_state == ASSIGNED, "Precondition"); 120 return _value; 121 } 122 void set_value(int value) { 123 assert(_state == INITIAL, "Precondition"); 124 _value = value; 125 _state = ASSIGNED; 126 } 127 bool is_initial() { return _state == INITIAL; } 128 bool is_assigned() { return _state == ASSIGNED; } 129 bool is_inconsistent() { return _state == INCONSISTENT; } 130 void set_inconsistent() { _state = INCONSISTENT; } 131 132 bool visit(picl_nodehdl_t nodeh, const char* name) { 133 assert(!is_inconsistent(), "Precondition"); 134 int curr; 135 if (_picl->get_int_property(nodeh, name, &curr) == PICL_SUCCESS) { 136 if (!is_assigned()) { // first iteration 137 set_value(curr); 138 } else if (curr != value()) { // following iterations 139 set_inconsistent(); 140 } 141 return true; 142 } 143 return false; 144 } 145 }; 146 147 class CPUVisitor { 148 UniqueValueVisitor _l1_visitor; 149 UniqueValueVisitor _l2_visitor; 150 int _limit; // number of times visit() can be run 151 public: 152 CPUVisitor(PICL *picl, int limit) : _l1_visitor(picl), _l2_visitor(picl), _limit(limit) {} 153 static int visit(picl_nodehdl_t nodeh, void *arg) { 154 CPUVisitor *cpu_visitor = static_cast<CPUVisitor*>(arg); 155 UniqueValueVisitor* l1_visitor = cpu_visitor->l1_visitor(); 156 UniqueValueVisitor* l2_visitor = cpu_visitor->l2_visitor(); 157 if (!l1_visitor->is_inconsistent()) { 158 l1_visitor->visit(nodeh, "l1-dcache-line-size"); 159 } 160 static const char* l2_data_cache_line_property_name = NULL; 161 // On the first visit determine the name of the l2 cache line size property and memoize it. 162 if (l2_data_cache_line_property_name == NULL) { 163 assert(!l2_visitor->is_inconsistent(), "First iteration cannot be inconsistent"); 164 l2_data_cache_line_property_name = "l2-cache-line-size"; 165 if (!l2_visitor->visit(nodeh, l2_data_cache_line_property_name)) { 166 l2_data_cache_line_property_name = "l2-dcache-line-size"; 167 l2_visitor->visit(nodeh, l2_data_cache_line_property_name); 168 } 169 } else { 170 if (!l2_visitor->is_inconsistent()) { 171 l2_visitor->visit(nodeh, l2_data_cache_line_property_name); 172 } 173 } 174 175 if (l1_visitor->is_inconsistent() && l2_visitor->is_inconsistent()) { 176 return PICL_WALK_TERMINATE; 177 } 178 cpu_visitor->_limit--; 179 if (cpu_visitor->_limit <= 0) { 180 return PICL_WALK_TERMINATE; 181 } 182 return PICL_WALK_CONTINUE; 183 } 184 UniqueValueVisitor* l1_visitor() { return &_l1_visitor; } 185 UniqueValueVisitor* l2_visitor() { return &_l2_visitor; } 186 }; 187 int _L1_data_cache_line_size; 188 int _L2_data_cache_line_size; 189 public: 190 static int visit_cpu(picl_nodehdl_t nodeh, void *state) { 191 return CPUVisitor::visit(nodeh, state); 192 } 193 194 PICL(bool is_fujitsu) : _L1_data_cache_line_size(0), _L2_data_cache_line_size(0), _dl_handle(NULL) { 195 if (!open_library()) { 196 return; 197 } 198 if (_picl_initialize() == PICL_SUCCESS) { 199 picl_nodehdl_t rooth; 200 if (_picl_get_root(&rooth) == PICL_SUCCESS) { 201 const char* cpu_class = "cpu"; 202 // If it's a Fujitsu machine, it's a "core" 203 if (is_fujitsu) { 204 cpu_class = "core"; 205 } 206 CPUVisitor cpu_visitor(this, os::processor_count()); 207 _picl_walk_tree_by_class(rooth, cpu_class, &cpu_visitor, PICL_visit_cpu_helper); 208 if (cpu_visitor.l1_visitor()->is_assigned()) { // Is there a value? 209 _L1_data_cache_line_size = cpu_visitor.l1_visitor()->value(); 210 } 211 if (cpu_visitor.l2_visitor()->is_assigned()) { 212 _L2_data_cache_line_size = cpu_visitor.l2_visitor()->value(); 213 } 214 } 215 _picl_shutdown(); 216 } 217 close_library(); 218 } 219 220 unsigned int L1_data_cache_line_size() const { return _L1_data_cache_line_size; } 221 unsigned int L2_data_cache_line_size() const { return _L2_data_cache_line_size; } 222 }; 223 224 225 extern "C" static int PICL_visit_cpu_helper(picl_nodehdl_t nodeh, void *result) { 226 return PICL::visit_cpu(nodeh, result); 227 } 228 229 template<typename FuncType> 230 bool PICL::bind(FuncType& func, const char* name) { 231 func = reinterpret_cast<FuncType>(dlsym(_dl_handle, name)); 232 return func != NULL; 233 } 234 235 bool PICL::bind_library_functions() { 236 assert(_dl_handle != NULL, "library should be open"); 237 return bind(_picl_initialize, "picl_initialize" ) && 238 bind(_picl_shutdown, "picl_shutdown" ) && 239 bind(_picl_get_root, "picl_get_root" ) && 240 bind(_picl_walk_tree_by_class, "picl_walk_tree_by_class") && 241 bind(_picl_get_prop_by_name, "picl_get_prop_by_name" ) && 242 bind(_picl_get_propval, "picl_get_propval" ) && 243 bind(_picl_get_propinfo, "picl_get_propinfo" ); 244 } 245 246 bool PICL::open_library() { 247 _dl_handle = dlopen("libpicl.so.1", RTLD_LAZY); 248 if (_dl_handle == NULL) { 249 warning("PICL (libpicl.so.1) is missing. Performance will not be optimal."); 250 return false; 251 } 252 if (!bind_library_functions()) { 253 assert(false, "unexpected PICL API change"); 254 close_library(); 255 return false; 256 } 257 return true; 258 } 259 260 void PICL::close_library() { 261 assert(_dl_handle != NULL, "library should be open"); 262 dlclose(_dl_handle); 263 _dl_handle = NULL; 264 } 265 266 // We need to keep these here as long as we have to build on Solaris 267 // versions before 10. 268 #ifndef SI_ARCHITECTURE_32 269 #define SI_ARCHITECTURE_32 516 /* basic 32-bit SI_ARCHITECTURE */ 270 #endif 271 272 #ifndef SI_ARCHITECTURE_64 273 #define SI_ARCHITECTURE_64 517 /* basic 64-bit SI_ARCHITECTURE */ 274 #endif 275 276 static void do_sysinfo(int si, const char* string, int* features, int mask) { 277 char tmp; 278 size_t bufsize = sysinfo(si, &tmp, 1); 279 280 // All SI defines used below must be supported. 281 guarantee(bufsize != -1, "must be supported"); 282 283 char* buf = (char*) os::malloc(bufsize, mtInternal); 284 285 if (buf == NULL) 286 return; 287 288 if (sysinfo(si, buf, bufsize) == bufsize) { 289 // Compare the string. 290 if (strcmp(buf, string) == 0) { 291 *features |= mask; 292 } 293 } 294 295 os::free(buf); 296 } 297 298 int VM_Version::platform_features(int features) { 299 assert(os::Solaris::supports_getisax(), "getisax() must be available"); 300 301 // Check 32-bit architecture. 302 do_sysinfo(SI_ARCHITECTURE_32, "sparc", &features, v8_instructions_m); 303 304 // Check 64-bit architecture. 305 do_sysinfo(SI_ARCHITECTURE_64, "sparcv9", &features, generic_v9_m); 306 307 // Extract valid instruction set extensions. 308 uint_t avs[2]; 309 uint_t avn = os::Solaris::getisax(avs, 2); 310 assert(avn <= 2, "should return two or less av's"); 311 uint_t av = avs[0]; 312 313 #ifndef PRODUCT 314 if (PrintMiscellaneous && Verbose) { 315 tty->print("getisax(2) returned: " PTR32_FORMAT, av); 316 if (avn > 1) { 317 tty->print(", " PTR32_FORMAT, avs[1]); 318 } 319 tty->cr(); 320 } 321 #endif 322 323 if (av & AV_SPARC_MUL32) features |= hardware_mul32_m; 324 if (av & AV_SPARC_DIV32) features |= hardware_div32_m; 325 if (av & AV_SPARC_FSMULD) features |= hardware_fsmuld_m; 326 if (av & AV_SPARC_V8PLUS) features |= v9_instructions_m; 327 if (av & AV_SPARC_POPC) features |= hardware_popc_m; 328 if (av & AV_SPARC_VIS) features |= vis1_instructions_m; 329 if (av & AV_SPARC_VIS2) features |= vis2_instructions_m; 330 if (avn > 1) { 331 uint_t av2 = avs[1]; 332 #ifndef AV2_SPARC_SPARC5 333 #define AV2_SPARC_SPARC5 0x00000008 /* The 29 new fp and sub instructions */ 334 #endif 335 if (av2 & AV2_SPARC_SPARC5) features |= sparc5_instructions_m; 336 } 337 338 // We only build on Solaris 10 and up, but some of the values below 339 // are not defined on all versions of Solaris 10, so we define them, 340 // if necessary. 341 #ifndef AV_SPARC_ASI_BLK_INIT 342 #define AV_SPARC_ASI_BLK_INIT 0x0080 /* ASI_BLK_INIT_xxx ASI */ 343 #endif 344 if (av & AV_SPARC_ASI_BLK_INIT) features |= blk_init_instructions_m; 345 346 #ifndef AV_SPARC_FMAF 347 #define AV_SPARC_FMAF 0x0100 /* Fused Multiply-Add */ 348 #endif 349 if (av & AV_SPARC_FMAF) features |= fmaf_instructions_m; 350 351 #ifndef AV_SPARC_FMAU 352 #define AV_SPARC_FMAU 0x0200 /* Unfused Multiply-Add */ 353 #endif 354 if (av & AV_SPARC_FMAU) features |= fmau_instructions_m; 355 356 #ifndef AV_SPARC_VIS3 357 #define AV_SPARC_VIS3 0x0400 /* VIS3 instruction set extensions */ 358 #endif 359 if (av & AV_SPARC_VIS3) features |= vis3_instructions_m; 360 361 #ifndef AV_SPARC_CBCOND 362 #define AV_SPARC_CBCOND 0x10000000 /* compare and branch instrs supported */ 363 #endif 364 if (av & AV_SPARC_CBCOND) features |= cbcond_instructions_m; 365 366 #ifndef AV_SPARC_AES 367 #define AV_SPARC_AES 0x00020000 /* aes instrs supported */ 368 #endif 369 if (av & AV_SPARC_AES) features |= aes_instructions_m; 370 371 #ifndef AV_SPARC_SHA1 372 #define AV_SPARC_SHA1 0x00400000 /* sha1 instruction supported */ 373 #endif 374 if (av & AV_SPARC_SHA1) features |= sha1_instruction_m; 375 376 #ifndef AV_SPARC_SHA256 377 #define AV_SPARC_SHA256 0x00800000 /* sha256 instruction supported */ 378 #endif 379 if (av & AV_SPARC_SHA256) features |= sha256_instruction_m; 380 381 #ifndef AV_SPARC_SHA512 382 #define AV_SPARC_SHA512 0x01000000 /* sha512 instruction supported */ 383 #endif 384 if (av & AV_SPARC_SHA512) features |= sha512_instruction_m; 385 386 // Determine the machine type. 387 do_sysinfo(SI_MACHINE, "sun4v", &features, sun4v_m); 388 389 { 390 // Using kstat to determine the machine type. 391 kstat_ctl_t* kc = kstat_open(); 392 kstat_t* ksp = kstat_lookup(kc, (char*)"cpu_info", -1, NULL); 393 const char* implementation = "UNKNOWN"; 394 if (ksp != NULL) { 395 if (kstat_read(kc, ksp, NULL) != -1 && ksp->ks_data != NULL) { 396 kstat_named_t* knm = (kstat_named_t *)ksp->ks_data; 397 for (int i = 0; i < ksp->ks_ndata; i++) { 398 if (strcmp((const char*)&(knm[i].name),"implementation") == 0) { 399 implementation = KSTAT_NAMED_STR_PTR(&knm[i]); 400 #ifndef PRODUCT 401 if (PrintMiscellaneous && Verbose) { 402 tty->print_cr("cpu_info.implementation: %s", implementation); 403 } 404 #endif 405 // Convert to UPPER case before compare. 406 char* impl = os::strdup_check_oom(implementation); 407 408 for (int i = 0; impl[i] != 0; i++) 409 impl[i] = (char)toupper((uint)impl[i]); 410 411 if (strstr(impl, "SPARC64") != NULL) { 412 features |= sparc64_family_m; 413 } else if (strstr(impl, "SPARC-M") != NULL) { 414 // M-series SPARC is based on T-series. 415 features |= (M_family_m | T_family_m); 416 } else if (strstr(impl, "SPARC-T") != NULL) { 417 features |= T_family_m; 418 if (strstr(impl, "SPARC-T1") != NULL) { 419 features |= T1_model_m; 420 } 421 } else { 422 if (strstr(impl, "SPARC") == NULL) { 423 #ifndef PRODUCT 424 // kstat on Solaris 8 virtual machines (branded zones) 425 // returns "(unsupported)" implementation. Solaris 8 is not 426 // supported anymore, but include this check to be on the 427 // safe side. 428 warning("kstat cpu_info implementation = '%s', assume generic SPARC", impl); 429 #endif 430 implementation = "SPARC"; 431 } 432 } 433 os::free((void*)impl); 434 break; 435 } 436 } // for( 437 } 438 } 439 assert(strcmp(implementation, "UNKNOWN") != 0, 440 "unknown cpu info (changed kstat interface?)"); 441 kstat_close(kc); 442 } 443 444 // Figure out cache line sizes using PICL 445 PICL picl((features & sparc64_family_m) != 0); 446 _L1_data_cache_line_size = picl.L1_data_cache_line_size(); 447 _L2_data_cache_line_size = picl.L2_data_cache_line_size(); 448 449 return features; 450 }