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 (the "License"). 6 * You may not use this file except in compliance with the License. 7 * 8 * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE 9 * or http://www.opensolaris.org/os/licensing. 10 * See the License for the specific language governing permissions 11 * and limitations under the License. 12 * 13 * When distributing Covered Code, include this CDDL HEADER in each 14 * file and include the License file at usr/src/OPENSOLARIS.LICENSE. 15 * If applicable, add the following below this CDDL HEADER, with the 16 * fields enclosed by brackets "[]" replaced with your own identifying 17 * information: Portions Copyright [yyyy] [name of copyright owner] 18 * 19 * CDDL HEADER END 20 */ 21 22 /* 23 * Copyright 2007 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 #include <sys/consdev.h> 63 #include <sys/wscons.h> 64 65 struct buf bfreelist; /* Head of the free list of buffers */ 66 67 sysinfo_t sysinfo; 68 vminfo_t vminfo; /* VM stats protected by sysinfolock mutex */ 69 70 #ifdef lint 71 int __lintzero; /* Alway zero for shutting up lint */ 72 #endif 73 74 /* 75 * The following describe the physical memory configuration. 76 * 77 * physmem - The amount of physical memory configured 78 * in pages. ptob(physmem) is the amount 79 * of physical memory in bytes. Defined in 80 * .../os/startup.c. 81 * 82 * physmax - The highest numbered physical page in memory. 83 * 84 * maxmem - Maximum available memory, in pages. Defined 85 * in main.c. 86 * 87 * physinstalled 88 * - Pages of physical memory installed; 89 * includes use by PROM/boot not counted in 90 * physmem. 91 */ 92 93 pfn_t physmax; 94 pgcnt_t physinstalled; 95 96 struct var v; 97 98 #include <sys/systm.h> 99 #include <sys/conf.h> 100 #include <sys/kmem.h> 101 #include <sys/sysmacros.h> 102 #include <sys/bootconf.h> 103 104 /* 105 * Data from swapgeneric.c that must be resident. 106 */ 107 struct vnode *rootvp; /* vnode of the root device */ 108 dev_t rootdev; /* dev_t of the root device */ 109 int root_is_svm; /* root is a mirrored device flag */ 110 111 int netboot; 112 int obpdebug; 113 char *dhcack; /* Used to cache ascii form of DHCPACK handed up by boot */ 114 char *netdev_path; /* Used to cache the netdev_path handed up by boot */ 115 116 /* 117 * Data from arp.c that must be resident. 118 */ 119 #include <sys/socket.h> 120 #include <sys/errno.h> 121 #include <sys/sockio.h> 122 #include <sys/stream.h> 123 #include <sys/stropts.h> 124 #include <sys/dlpi.h> 125 #include <net/if.h> 126 #include <net/if_arp.h> 127 #include <netinet/in.h> 128 #include <netinet/in_var.h> 129 #include <netinet/if_ether.h> 130 131 ether_addr_t etherbroadcastaddr = {0xff, 0xff, 0xff, 0xff, 0xff, 0xff}; 132 133 /* 134 * Data from timod that must be resident 135 */ 136 137 /* 138 * state transition table for TI interface 139 */ 140 #include <sys/tihdr.h> 141 142 #define nr 127 /* not reachable */ 143 144 char ti_statetbl[TE_NOEVENTS][TS_NOSTATES] = { 145 /* STATES */ 146 /* 0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 */ 147 148 { 1, nr, nr, nr, nr, nr, nr, nr, nr, nr, nr, nr, nr, nr, nr, nr, nr}, 149 {nr, nr, nr, 2, nr, nr, nr, nr, nr, nr, nr, nr, nr, nr, nr, nr, nr}, 150 {nr, nr, nr, 4, nr, nr, nr, nr, nr, nr, nr, nr, nr, nr, nr, nr, nr}, 151 {nr, 3, nr, nr, nr, nr, nr, nr, nr, nr, nr, nr, nr, nr, nr, nr, nr}, 152 {nr, nr, nr, nr, 3, nr, nr, nr, nr, nr, nr, nr, nr, nr, nr, nr, nr}, 153 {nr, 0, 3, nr, 3, 3, nr, nr, 7, nr, nr, nr, 6, 7, 9, 10, 11}, 154 {nr, nr, 0, nr, nr, 6, nr, nr, nr, nr, nr, nr, 3, nr, 3, 3, 3}, 155 {nr, nr, nr, nr, nr, nr, nr, nr, 9, nr, nr, nr, nr, 3, nr, nr, nr}, 156 {nr, nr, nr, nr, nr, nr, nr, nr, 3, nr, nr, nr, nr, 3, nr, nr, nr}, 157 {nr, nr, nr, nr, nr, nr, nr, nr, 7, nr, nr, nr, nr, 7, nr, nr, nr}, 158 {nr, nr, nr, 5, nr, nr, nr, nr, nr, nr, nr, nr, nr, nr, nr, nr, nr}, 159 {nr, nr, nr, nr, nr, nr, nr, 8, nr, nr, nr, nr, nr, nr, nr, nr, nr}, 160 {nr, nr, nr, nr, nr, nr, 12, 13, nr, 14, 15, 16, nr, nr, nr, nr, nr}, 161 {nr, nr, nr, nr, nr, nr, nr, nr, nr, 9, nr, 11, nr, nr, nr, nr, nr}, 162 {nr, nr, nr, nr, nr, nr, nr, nr, nr, 9, nr, 11, nr, nr, nr, nr, nr}, 163 {nr, nr, nr, nr, nr, nr, nr, nr, nr, 10, nr, 3, nr, nr, nr, nr, nr}, 164 {nr, nr, nr, 7, nr, nr, nr, 7, nr, nr, nr, nr, nr, nr, nr, nr, nr}, 165 {nr, nr, nr, nr, nr, nr, 9, nr, nr, nr, nr, nr, nr, nr, nr, nr, nr}, 166 {nr, nr, nr, nr, nr, nr, nr, nr, nr, 9, 10, nr, nr, nr, nr, nr, nr}, 167 {nr, nr, nr, nr, nr, nr, nr, nr, nr, 9, 10, nr, nr, nr, nr, nr, nr}, 168 {nr, nr, nr, nr, nr, nr, nr, nr, nr, 11, 3, nr, nr, nr, nr, nr, nr}, 169 {nr, nr, nr, nr, nr, nr, 3, nr, nr, 3, 3, 3, nr, nr, nr, nr, nr}, 170 {nr, nr, nr, nr, nr, nr, nr, 3, nr, nr, nr, nr, nr, nr, nr, nr, nr}, 171 {nr, nr, nr, nr, nr, nr, nr, 7, nr, nr, nr, nr, nr, nr, nr, nr, nr}, 172 {nr, nr, nr, 9, 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 {nr, nr, nr, 3, nr, nr, nr, nr, nr, nr, nr, nr, nr, nr, nr, nr, nr}, 175 {nr, nr, nr, 3, nr, nr, nr, nr, nr, nr, nr, nr, nr, nr, nr, nr, nr}, 176 }; 177 178 179 #include <sys/tty.h> 180 #include <sys/ptyvar.h> 181 182 static void store_fetch_initspace(); 183 184 /* 185 * Allocate tunable structures at runtime. 186 */ 187 void 188 space_init(void) 189 { 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 * Flag whether console fb output is using PROM/PROM emulation 217 * terminal emulator, or is using the kernel terminal emulator. 218 */ 219 int consmode = CONS_FW; 220 221 /* 222 * The following allows systems to disable use of the kernel 223 * terminal emulator (retreat to PROM terminal emulator if there 224 * is PROM). 225 */ 226 int cons_tem_disable; 227 228 /* 229 * consconfig() in autoconf.c sets this; it's the vnode of the distinguished 230 * keyboard/frame buffer combination, aka the workstation console. 231 */ 232 vnode_t *rwsconsvp; 233 dev_t rwsconsdev; 234 235 /* 236 * Platform console abort policy. 237 * Platforms may override the default software policy, if such hardware 238 * (e.g. keyswitches with a secure position) exists. 239 */ 240 int abort_enable = KIOCABORTENABLE; 241 242 /* from cpc.c */ 243 uint_t kcpc_key; /* TSD key for CPU performance counter context */ 244 245 /* 246 * storing and retrieving data by string key 247 * 248 * this mechanism allows a consumer to store and retrieve by name a pointer 249 * to some space maintained by the consumer. 250 * For example, a driver or module may want to have persistent data 251 * over unloading/loading cycles. The pointer is typically to some 252 * kmem_alloced space and it should not be pointing to data that will 253 * be destroyed when the module is unloaded. 254 */ 255 static mod_hash_t *space_hash; 256 static char *space_hash_name = "space_hash"; 257 static size_t space_hash_nchains = 8; 258 259 static void 260 store_fetch_initspace() 261 { 262 space_hash = mod_hash_create_strhash(space_hash_name, 263 space_hash_nchains, mod_hash_null_valdtor); 264 ASSERT(space_hash); 265 } 266 267 int 268 space_store(char *key, uintptr_t ptr) 269 { 270 char *s; 271 int rval; 272 size_t l; 273 274 /* some sanity checks first */ 275 if (key == NULL) { 276 return (-1); 277 } 278 l = (size_t)strlen(key); 279 if (l == 0) { 280 return (-1); 281 } 282 283 /* increment for null terminator */ 284 l++; 285 286 /* alloc space for the string, mod_hash_insert will deallocate */ 287 s = kmem_alloc(l, KM_SLEEP); 288 bcopy(key, s, l); 289 290 rval = mod_hash_insert(space_hash, 291 (mod_hash_key_t)s, (mod_hash_val_t)ptr); 292 293 switch (rval) { 294 case 0: 295 break; 296 #ifdef DEBUG 297 case MH_ERR_DUPLICATE: 298 cmn_err(CE_WARN, "space_store: duplicate key %s", key); 299 rval = -1; 300 break; 301 case MH_ERR_NOMEM: 302 cmn_err(CE_WARN, "space_store: no mem for key %s", key); 303 rval = -1; 304 break; 305 default: 306 cmn_err(CE_WARN, "space_store: unspecified error for key %s", 307 key); 308 rval = -1; 309 break; 310 #else 311 default: 312 rval = -1; 313 break; 314 #endif 315 } 316 317 return (rval); 318 } 319 320 uintptr_t 321 space_fetch(char *key) 322 { 323 uintptr_t ptr = 0; 324 mod_hash_val_t val; 325 int rval; 326 327 if (key) { 328 rval = mod_hash_find(space_hash, (mod_hash_key_t)key, &val); 329 if (rval == 0) { 330 ptr = (uintptr_t)val; 331 } 332 } 333 334 return (ptr); 335 } 336 337 void 338 space_free(char *key) 339 { 340 if (key) { 341 (void) mod_hash_destroy(space_hash, (mod_hash_key_t)key); 342 } 343 } 344 345 /* 346 * Support for CRC32. At present all calculations are done in simple 347 * macros, so all we need is somewhere to declare the global lookup table. 348 */ 349 350 #include <sys/crc32.h> 351 352 const uint32_t crc32_table[256] = { CRC32_TABLE }; 353 354 355 /* 356 * We need to fanout load from NIC which can overwhelm a single 357 * CPU. A 10Gb NIC interrupting a single CPU is a good example. 358 * Instead of fanning out to random CPUs, it a big performance 359 * win if you can fanout to the threads on the same core (niagara) 360 * that is taking interrupts. 361 * 362 * We need a better mechanism to figure out the other threads on 363 * the same core or cores on the same chip which share caches etc. 364 * but for time being, this will suffice. 365 */ 366 #define NUMBER_OF_THREADS_PER_CPU 4 367 uint_t ip_threads_per_cpu = NUMBER_OF_THREADS_PER_CPU; 368 369 /* Global flag to enable/disable soft ring facility */ 370 boolean_t ip_squeue_soft_ring = B_FALSE; 371