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
37 extern "C" static int PICL_get_cache_line_sizes_helper(picl_nodehdl_t nodeh, void *result);
38
39
40 class PICL {
41 // Get a value of the integer property. The value in the tree can be either 32 or 64 bit
42 // depending on the platform. The result is converted to int.
43 static int get_int_property(picl_nodehdl_t nodeh, const char* name, int* result) {
44 picl_propinfo_t pinfo;
45 picl_prophdl_t proph;
46 if (picl_get_prop_by_name(nodeh, name, &proph) != PICL_SUCCESS ||
47 picl_get_propinfo(proph, &pinfo) != PICL_SUCCESS) {
48 return PICL_FAILURE;
49 }
50
51 if (pinfo.type != PICL_PTYPE_INT && pinfo.type != PICL_PTYPE_UNSIGNED_INT) {
52 assert(false, "Invalid property type");
53 return PICL_FAILURE;
54 }
55 if (pinfo.size == sizeof(int64_t)) {
56 int64_t val;
57 if (picl_get_propval(proph, &val, sizeof(int64_t)) != PICL_SUCCESS) {
58 return PICL_FAILURE;
59 }
60 *result = static_cast<int>(val);
61 } else if (pinfo.size == sizeof(int32_t)) {
62 int32_t val;
63 if (picl_get_propval(proph, &val, sizeof(int32_t)) != PICL_SUCCESS) {
64 return PICL_FAILURE;
65 }
66 *result = static_cast<int>(val);
67 } else {
68 assert(false, "Unexpected integer property size");
69 return PICL_FAILURE;
70 }
71 return PICL_SUCCESS;
72 }
73
74
75 static const int PROP_INCONSISTENT = -1;
76 static const int PROP_MISSING = -2;
77 // For every visited node make sure the specified property exists and has the same value
78 static int get_int_property_and_ensure_consistency(picl_nodehdl_t nodeh, const char* name, void *result) {
79 int *prev = static_cast<int*>(result);
80 int curr;
81 if (*prev >= 0) { // are still interested in walking?
82 if (get_int_property(nodeh, name, &curr) == PICL_SUCCESS) {
83 if (*prev == 0) { // first
84 *prev = curr;
85 return PICL_WALK_CONTINUE;
86 } else if (curr == *prev) { // others
87 return PICL_WALK_CONTINUE;
88 } else {
89 *prev = PROP_INCONSISTENT;
90 }
91 } else {
92 // missing property?
93 *prev = PROP_MISSING;
94 }
95 }
96 return PICL_WALK_TERMINATE;
97 }
98
99 struct CacheLineSizes {
100 int _L1_data;
101 int _L2;
102 CacheLineSizes() : _L1_data(0), _L2(0) {}
103 } _cache_line_sizes;
104
105 public:
106 static int get_cache_line_sizes(picl_nodehdl_t nodeh, void *result)
107 {
108 CacheLineSizes *sizes = static_cast<CacheLineSizes*>(result);
109 int r1 = get_int_property_and_ensure_consistency(nodeh, "l2-cache-line-size", &(sizes->_L2));
110 int r2 = get_int_property_and_ensure_consistency(nodeh, "l1-dcache-line-size", &(sizes->_L1_data));
111 if (r1 == PICL_WALK_TERMINATE && r2 == PICL_WALK_TERMINATE) {
112 return PICL_WALK_TERMINATE;
113 }
114 return PICL_WALK_CONTINUE;
115 }
116
117 PICL() {
118 if (picl_initialize() == PICL_SUCCESS) {
119 picl_nodehdl_t rooth;
120 if (picl_get_root(&rooth) == PICL_SUCCESS) {
121 // Visit all CPUs
122 CacheLineSizes cpu_cache_sizes, core_cache_sizes;
123 picl_walk_tree_by_class(rooth, "cpu", &cpu_cache_sizes, PICL_get_cache_line_sizes_helper);
124 picl_walk_tree_by_class(rooth, "core", &core_cache_sizes, PICL_get_cache_line_sizes_helper);
125 if (cpu_cache_sizes._L1_data != PROP_INCONSISTENT && core_cache_sizes._L1_data != PROP_INCONSISTENT) {
126 _cache_line_sizes._L1_data = MAX2(cpu_cache_sizes._L1_data, core_cache_sizes._L1_data);
127 }
128 if (cpu_cache_sizes._L2 != PROP_INCONSISTENT && core_cache_sizes._L2 != PROP_INCONSISTENT) {
129 _cache_line_sizes._L2 = MAX2(cpu_cache_sizes._L2, core_cache_sizes._L2);
130 }
131 }
132 picl_shutdown();
133 }
134 }
135
136 unsigned int L1_data_cache_line_size() const { return _cache_line_sizes._L1_data; }
137 unsigned int L2_cache_line_size() const { return _cache_line_sizes._L2; }
138 };
139
140 extern "C" static int PICL_get_cache_line_sizes_helper(picl_nodehdl_t nodeh, void *result) {
141 return PICL::get_cache_line_sizes(nodeh, result);
142 }
143
144 // We need to keep these here as long as we have to build on Solaris
145 // versions before 10.
146 #ifndef SI_ARCHITECTURE_32
147 #define SI_ARCHITECTURE_32 516 /* basic 32-bit SI_ARCHITECTURE */
148 #endif
149
150 #ifndef SI_ARCHITECTURE_64
151 #define SI_ARCHITECTURE_64 517 /* basic 64-bit SI_ARCHITECTURE */
152 #endif
153
154 static void do_sysinfo(int si, const char* string, int* features, int mask) {
155 char tmp;
156 size_t bufsize = sysinfo(si, &tmp, 1);
157
158 // All SI defines used below must be supported.
159 guarantee(bufsize != -1, "must be supported");
160
161 char* buf = (char*) os::malloc(bufsize, mtInternal);
162
163 if (buf == NULL)
164 return;
165
166 if (sysinfo(si, buf, bufsize) == bufsize) {
167 // Compare the string.
168 if (strcmp(buf, string) == 0) {
169 *features |= mask;
170 }
171 }
172
173 os::free(buf);
174 }
175
176 int VM_Version::platform_features(int features) {
177 assert(os::Solaris::supports_getisax(), "getisax() must be available");
178
179 // Check 32-bit architecture.
180 do_sysinfo(SI_ARCHITECTURE_32, "sparc", &features, v8_instructions_m);
181
182 // Check 64-bit architecture.
183 do_sysinfo(SI_ARCHITECTURE_64, "sparcv9", &features, generic_v9_m);
184
185 // Extract valid instruction set extensions.
186 uint_t avs[2];
187 uint_t avn = os::Solaris::getisax(avs, 2);
188 assert(avn <= 2, "should return two or less av's");
189 uint_t av = avs[0];
190
191 #ifndef PRODUCT
192 if (PrintMiscellaneous && Verbose) {
193 tty->print("getisax(2) returned: " PTR32_FORMAT, av);
194 if (avn > 1) {
195 tty->print(", " PTR32_FORMAT, avs[1]);
196 }
197 tty->cr();
198 }
199 #endif
200
201 if (av & AV_SPARC_MUL32) features |= hardware_mul32_m;
202 if (av & AV_SPARC_DIV32) features |= hardware_div32_m;
203 if (av & AV_SPARC_FSMULD) features |= hardware_fsmuld_m;
204 if (av & AV_SPARC_V8PLUS) features |= v9_instructions_m;
205 if (av & AV_SPARC_POPC) features |= hardware_popc_m;
206 if (av & AV_SPARC_VIS) features |= vis1_instructions_m;
207 if (av & AV_SPARC_VIS2) features |= vis2_instructions_m;
208 if (avn > 1) {
209 uint_t av2 = avs[1];
210 #ifndef AV2_SPARC_SPARC5
211 #define AV2_SPARC_SPARC5 0x00000008 /* The 29 new fp and sub instructions */
212 #endif
213 if (av2 & AV2_SPARC_SPARC5) features |= sparc5_instructions_m;
214 }
215
216 // We only build on Solaris 10 and up, but some of the values below
217 // are not defined on all versions of Solaris 10, so we define them,
218 // if necessary.
219 #ifndef AV_SPARC_ASI_BLK_INIT
220 #define AV_SPARC_ASI_BLK_INIT 0x0080 /* ASI_BLK_INIT_xxx ASI */
221 #endif
222 if (av & AV_SPARC_ASI_BLK_INIT) features |= blk_init_instructions_m;
223
224 #ifndef AV_SPARC_FMAF
225 #define AV_SPARC_FMAF 0x0100 /* Fused Multiply-Add */
226 #endif
227 if (av & AV_SPARC_FMAF) features |= fmaf_instructions_m;
228
229 #ifndef AV_SPARC_FMAU
230 #define AV_SPARC_FMAU 0x0200 /* Unfused Multiply-Add */
231 #endif
232 if (av & AV_SPARC_FMAU) features |= fmau_instructions_m;
233
234 #ifndef AV_SPARC_VIS3
235 #define AV_SPARC_VIS3 0x0400 /* VIS3 instruction set extensions */
236 #endif
237 if (av & AV_SPARC_VIS3) features |= vis3_instructions_m;
238
239 #ifndef AV_SPARC_CBCOND
240 #define AV_SPARC_CBCOND 0x10000000 /* compare and branch instrs supported */
241 #endif
242 if (av & AV_SPARC_CBCOND) features |= cbcond_instructions_m;
243
244 #ifndef AV_SPARC_AES
245 #define AV_SPARC_AES 0x00020000 /* aes instrs supported */
246 #endif
247 if (av & AV_SPARC_AES) features |= aes_instructions_m;
248
249 #ifndef AV_SPARC_SHA1
250 #define AV_SPARC_SHA1 0x00400000 /* sha1 instruction supported */
251 #endif
252 if (av & AV_SPARC_SHA1) features |= sha1_instruction_m;
253
254 #ifndef AV_SPARC_SHA256
255 #define AV_SPARC_SHA256 0x00800000 /* sha256 instruction supported */
256 #endif
257 if (av & AV_SPARC_SHA256) features |= sha256_instruction_m;
258
259 #ifndef AV_SPARC_SHA512
260 #define AV_SPARC_SHA512 0x01000000 /* sha512 instruction supported */
261 #endif
262 if (av & AV_SPARC_SHA512) features |= sha512_instruction_m;
263
264 // Determine the machine type.
265 do_sysinfo(SI_MACHINE, "sun4v", &features, sun4v_m);
266
267 {
268 // Using kstat to determine the machine type.
269 kstat_ctl_t* kc = kstat_open();
270 kstat_t* ksp = kstat_lookup(kc, (char*)"cpu_info", -1, NULL);
271 const char* implementation = "UNKNOWN";
272 if (ksp != NULL) {
273 if (kstat_read(kc, ksp, NULL) != -1 && ksp->ks_data != NULL) {
274 kstat_named_t* knm = (kstat_named_t *)ksp->ks_data;
275 for (int i = 0; i < ksp->ks_ndata; i++) {
276 if (strcmp((const char*)&(knm[i].name),"implementation") == 0) {
277 implementation = KSTAT_NAMED_STR_PTR(&knm[i]);
278 #ifndef PRODUCT
279 if (PrintMiscellaneous && Verbose) {
280 tty->print_cr("cpu_info.implementation: %s", implementation);
281 }
282 #endif
283 // Convert to UPPER case before compare.
284 char* impl = os::strdup_check_oom(implementation);
285
286 for (int i = 0; impl[i] != 0; i++)
287 impl[i] = (char)toupper((uint)impl[i]);
288
289 if (strstr(impl, "SPARC64") != NULL) {
290 features |= sparc64_family_m;
291 } else if (strstr(impl, "SPARC-M") != NULL) {
292 // M-series SPARC is based on T-series.
293 features |= (M_family_m | T_family_m);
294 } else if (strstr(impl, "SPARC-T") != NULL) {
295 features |= T_family_m;
296 if (strstr(impl, "SPARC-T1") != NULL) {
297 features |= T1_model_m;
298 }
299 } else {
300 if (strstr(impl, "SPARC") == NULL) {
301 #ifndef PRODUCT
302 // kstat on Solaris 8 virtual machines (branded zones)
303 // returns "(unsupported)" implementation. Solaris 8 is not
304 // supported anymore, but include this check to be on the
305 // safe side.
306 warning("kstat cpu_info implementation = '%s', assume generic SPARC", impl);
307 #endif
308 implementation = "SPARC";
309 }
310 }
311 os::free((void*)impl);
312 break;
313 }
314 } // for(
315 }
316 }
317 assert(strcmp(implementation, "UNKNOWN") != 0,
318 "unknown cpu info (changed kstat interface?)");
319 kstat_close(kc);
320 }
321
322 // Figure out cache line sizes using PICL
323 PICL picl;
324 _L1_data_cache_line_size = picl.L1_data_cache_line_size();
325 _L2_cache_line_size = picl.L2_cache_line_size();
326
327 return features;
328 }