1 /* 2 * CDDL HEADER START 3 * 4 * The contents of this file are subject to the terms of the 5 * Common Development and Distribution License, Version 1.0 only 6 * (the "License"). You may not use this file except in compliance 7 * with the License. 8 * 9 * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE 10 * or http://www.opensolaris.org/os/licensing. 11 * See the License for the specific language governing permissions 12 * and limitations under the License. 13 * 14 * When distributing Covered Code, include this CDDL HEADER in each 15 * file and include the License file at usr/src/OPENSOLARIS.LICENSE. 16 * If applicable, add the following below this CDDL HEADER, with the 17 * fields enclosed by brackets "[]" replaced with your own identifying 18 * information: Portions Copyright [yyyy] [name of copyright owner] 19 * 20 * CDDL HEADER END 21 */ 22 /* 23 * Copyright 2005 Sun Microsystems, Inc. All rights reserved. 24 * Use is subject to license terms. 25 */ 26 27 #pragma ident "%Z%%M% %I% %E% SMI" 28 29 /* 30 * The intent of this file is to contain any data that must remain 31 * resident in the kernel. 32 * 33 * space_store(), space_fetch(), and space_free() have been added to 34 * easily store and retrieve kernel resident data. 35 * These functions are recommended rather than adding new variables to 36 * this file. 37 * 38 * Note that it's possible for name collisions to occur. In order to 39 * prevent collisions, it's recommended that the convention in 40 * PSARC/1997/389 be used. If a collision occurs, then space_store will 41 * fail. 42 */ 43 44 #include <sys/types.h> 45 #include <sys/param.h> 46 #include <sys/var.h> 47 #include <sys/proc.h> 48 #include <sys/signal.h> 49 #include <sys/utsname.h> 50 #include <sys/buf.h> 51 #include <sys/cred.h> 52 #include <sys/vfs.h> 53 #include <sys/vnode.h> 54 #include <sys/sysinfo.h> 55 #include <sys/t_lock.h> 56 #include <sys/vmem.h> 57 #include <sys/modhash.h> 58 #include <sys/cmn_err.h> 59 60 #include <sys/strredir.h> 61 #include <sys/kbio.h> 62 63 struct buf bfreelist; /* Head of the free list of buffers */ 64 65 sysinfo_t sysinfo; 66 vminfo_t vminfo; /* VM stats protected by sysinfolock mutex */ 67 68 #ifdef lint 69 int __lintzero; /* Alway zero for shutting up lint */ 70 #endif 71 72 /* 73 * The following describe the physical memory configuration. 74 * 75 * physmem - The amount of physical memory configured 76 * in pages. ptob(physmem) is the amount 77 * of physical memory in bytes. Defined in 78 * .../os/startup.c. 79 * 80 * physmax - The highest numbered physical page in memory. 81 * 82 * maxmem - Maximum available memory, in pages. Defined 83 * in main.c. 84 * 85 * physinstalled 86 * - Pages of physical memory installed; 87 * includes use by PROM/boot not counted in 88 * physmem. 89 */ 90 91 pfn_t physmax; 92 pgcnt_t physinstalled; 93 94 struct var v; 95 96 #include <sys/systm.h> 97 #include <sys/conf.h> 98 #include <sys/kmem.h> 99 #include <sys/sysmacros.h> 100 #include <sys/bootconf.h> 101 102 /* 103 * Data from swapgeneric.c that must be resident. 104 */ 105 struct vnode *rootvp; /* vnode of the root device */ 106 dev_t rootdev; /* dev_t of the root device */ 107 int root_is_svm; /* root is a mirrored device flag */ 108 109 int netboot; 110 int obpdebug; 111 char *dhcack; /* Used to cache ascii form of DHCPACK handed up by boot */ 112 char *netdev_path; /* Used to cache the netdev_path handed up by boot */ 113 114 /* 115 * Data from arp.c that must be resident. 116 */ 117 #include <sys/socket.h> 118 #include <sys/errno.h> 119 #include <sys/sockio.h> 120 #include <sys/stream.h> 121 #include <sys/stropts.h> 122 #include <sys/dlpi.h> 123 #include <net/if.h> 124 #include <net/if_arp.h> 125 #include <netinet/in.h> 126 #include <netinet/in_var.h> 127 #include <netinet/if_ether.h> 128 129 ether_addr_t etherbroadcastaddr = {0xff, 0xff, 0xff, 0xff, 0xff, 0xff}; 130 131 /* 132 * Data from timod that must be resident 133 */ 134 135 /* 136 * state transition table for TI interface 137 */ 138 #include <sys/tihdr.h> 139 140 #define nr 127 /* not reachable */ 141 142 char ti_statetbl[TE_NOEVENTS][TS_NOSTATES] = { 143 /* STATES */ 144 /* 0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 */ 145 146 { 1, nr, nr, nr, nr, nr, nr, nr, nr, nr, nr, nr, nr, nr, nr, nr, nr}, 147 {nr, nr, nr, 2, nr, nr, nr, nr, nr, nr, nr, nr, nr, nr, nr, nr, nr}, 148 {nr, nr, nr, 4, nr, nr, nr, nr, nr, nr, nr, nr, nr, nr, nr, nr, nr}, 149 {nr, 3, nr, nr, nr, nr, nr, nr, nr, nr, nr, nr, nr, nr, nr, nr, nr}, 150 {nr, nr, nr, nr, 3, nr, nr, nr, nr, nr, nr, nr, nr, nr, nr, nr, nr}, 151 {nr, 0, 3, nr, 3, 3, nr, nr, 7, nr, nr, nr, 6, 7, 9, 10, 11}, 152 {nr, nr, 0, nr, nr, 6, nr, nr, nr, nr, nr, nr, 3, nr, 3, 3, 3}, 153 {nr, nr, nr, nr, nr, nr, nr, nr, 9, nr, nr, nr, nr, 3, nr, nr, nr}, 154 {nr, nr, nr, nr, nr, nr, nr, nr, 3, nr, nr, nr, nr, 3, nr, nr, nr}, 155 {nr, nr, nr, nr, nr, nr, nr, nr, 7, nr, nr, nr, nr, 7, nr, nr, nr}, 156 {nr, nr, nr, 5, nr, nr, nr, nr, nr, nr, nr, nr, nr, nr, nr, nr, nr}, 157 {nr, nr, nr, nr, nr, nr, nr, 8, nr, nr, nr, nr, nr, nr, nr, nr, nr}, 158 {nr, nr, nr, nr, nr, nr, 12, 13, nr, 14, 15, 16, nr, nr, nr, nr, nr}, 159 {nr, nr, nr, nr, nr, nr, nr, nr, nr, 9, nr, 11, nr, nr, nr, nr, nr}, 160 {nr, nr, nr, nr, nr, nr, nr, nr, nr, 9, nr, 11, nr, nr, nr, nr, nr}, 161 {nr, nr, nr, nr, nr, nr, nr, nr, nr, 10, nr, 3, nr, nr, nr, nr, nr}, 162 {nr, nr, nr, 7, nr, nr, nr, 7, nr, nr, nr, nr, nr, nr, nr, nr, nr}, 163 {nr, nr, nr, nr, nr, nr, 9, nr, nr, nr, nr, nr, nr, nr, nr, nr, nr}, 164 {nr, nr, nr, nr, nr, nr, nr, nr, nr, 9, 10, nr, nr, nr, nr, nr, nr}, 165 {nr, nr, nr, nr, nr, nr, nr, nr, nr, 9, 10, nr, nr, nr, nr, nr, nr}, 166 {nr, nr, nr, nr, nr, nr, nr, nr, nr, 11, 3, nr, nr, nr, nr, nr, nr}, 167 {nr, nr, nr, nr, nr, nr, 3, nr, nr, 3, 3, 3, nr, nr, nr, nr, nr}, 168 {nr, nr, nr, nr, nr, nr, nr, 3, nr, nr, nr, nr, nr, nr, nr, nr, nr}, 169 {nr, nr, nr, nr, nr, nr, nr, 7, nr, nr, nr, nr, nr, nr, nr, nr, nr}, 170 {nr, nr, nr, 9, nr, nr, nr, nr, nr, nr, nr, nr, nr, nr, nr, nr, nr}, 171 {nr, nr, nr, 3, nr, nr, nr, nr, nr, nr, nr, nr, nr, nr, nr, nr, nr}, 172 {nr, nr, nr, 3, nr, nr, nr, nr, nr, nr, nr, nr, nr, nr, nr, nr, nr}, 173 {nr, nr, nr, 3, nr, nr, nr, nr, nr, nr, nr, nr, nr, nr, nr, nr, nr}, 174 }; 175 176 177 #include <sys/sad.h> 178 #include <sys/tty.h> 179 #include <sys/ptyvar.h> 180 181 static void store_fetch_initspace(); 182 183 /* 184 * Allocate tunable structures at runtime. 185 */ 186 void 187 space_init(void) 188 { 189 sad_initspace(); 190 pty_initspace(); 191 store_fetch_initspace(); 192 } 193 194 int ts_dispatch_extended = -1; /* set in ts_getdptbl or set_platform_default */ 195 196 /* 197 * Previously defined in consmsconf.c ... 198 */ 199 dev_t kbddev = NODEV; 200 dev_t mousedev = NODEV; 201 dev_t stdindev = NODEV; 202 struct vnode *wsconsvp; 203 204 dev_t fbdev = NODEV; 205 struct vnode *fbvp; 206 dev_info_t *fbdip; 207 208 /* 209 * moved from cons.c because they must be resident in the kernel. 210 */ 211 vnode_t *rconsvp; 212 dev_t rconsdev; 213 dev_t uconsdev = NODEV; 214 215 /* 216 * This flag, when set marks rconsvp in a transition state. 217 */ 218 219 int cn_conf; 220 221 /* 222 * Moved from sad_conf.c because of the usual in loadable modules 223 */ 224 225 #ifndef NSTRPHASH 226 #define NSTRPHASH 128 227 #endif 228 struct autopush **strpcache; 229 int strpmask = NSTRPHASH - 1; 230 231 /* 232 * Moved here from wscons.c 233 * Package the redirection-related routines into an ops vector of the form 234 * that the redirecting driver expects. 235 */ 236 extern int wcvnget(); 237 extern void wcvnrele(); 238 srvnops_t wscons_srvnops = { 239 wcvnget, 240 wcvnrele 241 }; 242 243 /* 244 * consconfig() in autoconf.c sets this; it's the vnode of the distinguished 245 * keyboard/frame buffer combination, aka the workstation console. 246 */ 247 248 vnode_t *rwsconsvp; 249 dev_t rwsconsdev; 250 251 /* 252 * Platform console abort policy. 253 * Platforms may override the default software policy, if such hardware 254 * (e.g. keyswitches with a secure position) exists. 255 */ 256 int abort_enable = KIOCABORTENABLE; 257 258 /* from iwscons.c */ 259 260 kthread_id_t iwscn_thread; /* thread that is allowed to push redirm */ 261 wcm_data_t *iwscn_wcm_data; /* allocated data for redirm */ 262 263 /* from cpc.c */ 264 uint_t kcpc_key; /* TSD key for CPU performance counter context */ 265 266 /* 267 * storing and retrieving data by string key 268 * 269 * this mechanism allows a consumer to store and retrieve by name a pointer 270 * to some space maintained by the consumer. 271 * For example, a driver or module may want to have persistent data 272 * over unloading/loading cycles. The pointer is typically to some 273 * kmem_alloced space and it should not be pointing to data that will 274 * be destroyed when the module is unloaded. 275 */ 276 static mod_hash_t *space_hash; 277 static char *space_hash_name = "space_hash"; 278 static size_t space_hash_nchains = 8; 279 280 static void 281 store_fetch_initspace() 282 { 283 space_hash = mod_hash_create_strhash(space_hash_name, 284 space_hash_nchains, mod_hash_null_valdtor); 285 ASSERT(space_hash); 286 } 287 288 int 289 space_store(char *key, uintptr_t ptr) 290 { 291 char *s; 292 int rval; 293 size_t l; 294 295 /* some sanity checks first */ 296 if (key == NULL) { 297 return (-1); 298 } 299 l = (size_t)strlen(key); 300 if (l == 0) { 301 return (-1); 302 } 303 304 /* increment for null terminator */ 305 l++; 306 307 /* alloc space for the string, mod_hash_insert will deallocate */ 308 s = kmem_alloc(l, KM_SLEEP); 309 bcopy(key, s, l); 310 311 rval = mod_hash_insert(space_hash, 312 (mod_hash_key_t)s, (mod_hash_val_t)ptr); 313 314 switch (rval) { 315 case 0: 316 break; 317 #ifdef DEBUG 318 case MH_ERR_DUPLICATE: 319 cmn_err(CE_WARN, "space_store: duplicate key %s", key); 320 rval = -1; 321 break; 322 case MH_ERR_NOMEM: 323 cmn_err(CE_WARN, "space_store: no mem for key %s", key); 324 rval = -1; 325 break; 326 default: 327 cmn_err(CE_WARN, "space_store: unspecified error for key %s", 328 key); 329 rval = -1; 330 break; 331 #else 332 default: 333 rval = -1; 334 break; 335 #endif 336 } 337 338 return (rval); 339 } 340 341 uintptr_t 342 space_fetch(char *key) 343 { 344 uintptr_t ptr = 0; 345 mod_hash_val_t val; 346 int rval; 347 348 if (key) { 349 rval = mod_hash_find(space_hash, (mod_hash_key_t)key, &val); 350 if (rval == 0) { 351 ptr = (uintptr_t)val; 352 } 353 } 354 355 return (ptr); 356 } 357 358 void 359 space_free(char *key) 360 { 361 if (key) { 362 (void) mod_hash_destroy(space_hash, (mod_hash_key_t)key); 363 } 364 } 365 366 /* 367 * Support for CRC32. At present all calculations are done in simple 368 * macros, so all we need is somewhere to declare the global lookup table. 369 */ 370 371 #include <sys/crc32.h> 372 373 const uint32_t crc32_table[256] = { CRC32_TABLE }; 374 375 376 /* 377 * We need to fanout load from NIC which can overwhelm a single 378 * CPU. A 10Gb NIC interrupting a single CPU is a good example. 379 * Instead of fanning out to random CPUs, it a big performance 380 * win if you can fanout to the threads on the same core (niagara) 381 * that is taking interrupts. 382 * 383 * We need a better mechanism to figure out the other threads on 384 * the same core or cores on the same chip which share caches etc. 385 * but for time being, this will suffice. 386 */ 387 #define NUMBER_OF_THREADS_PER_CPU 4 388 uint_t ip_threads_per_cpu = NUMBER_OF_THREADS_PER_CPU; 389 390 /* Global flag to enable/disable soft ring facility */ 391 boolean_t ip_squeue_soft_ring = B_FALSE; 392