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 2009 Sun Microsystems, Inc. All rights reserved. 24 * Use is subject to license terms. 25 */ 26 27 /* 28 * The intent of this file is to contain any data that must remain 29 * resident in the kernel. 30 * 31 * space_store(), space_fetch(), and space_free() have been added to 32 * easily store and retrieve kernel resident data. 33 * These functions are recommended rather than adding new variables to 34 * this file. 35 * 36 * Note that it's possible for name collisions to occur. In order to 37 * prevent collisions, it's recommended that the convention in 38 * PSARC/1997/389 be used. If a collision occurs, then space_store will 39 * fail. 40 */ 41 42 #include <sys/types.h> 43 #include <sys/param.h> 44 #include <sys/var.h> 45 #include <sys/proc.h> 46 #include <sys/signal.h> 47 #include <sys/utsname.h> 48 #include <sys/buf.h> 49 #include <sys/cred.h> 50 #include <sys/vfs.h> 51 #include <sys/vnode.h> 52 #include <sys/sysinfo.h> 53 #include <sys/t_lock.h> 54 #include <sys/vmem.h> 55 #include <sys/modhash.h> 56 #include <sys/cmn_err.h> 57 58 #include <sys/strredir.h> 59 #include <sys/kbio.h> 60 #include <sys/consdev.h> 61 #include <sys/wscons.h> 62 #include <sys/bootprops.h> 63 64 struct buf bfreelist; /* Head of the free list of buffers */ 65 66 sysinfo_t sysinfo; 67 vminfo_t vminfo; /* VM stats protected by sysinfolock mutex */ 68 69 #ifdef lint 70 int __lintzero; /* Alway zero for shutting up lint */ 71 #endif 72 73 /* 74 * The following describe the physical memory configuration. 75 * 76 * physmem - The amount of physical memory configured 77 * in pages. ptob(physmem) is the amount 78 * of physical memory in bytes. Defined in 79 * .../os/startup.c. 80 * 81 * physmax - The highest numbered physical page in memory. 82 * 83 * maxmem - Maximum available memory, in pages. Defined 84 * in main.c. 85 * 86 * physinstalled 87 * - Pages of physical memory installed; 88 * includes use by PROM/boot not counted in 89 * physmem. 90 */ 91 92 pfn_t physmax; 93 pgcnt_t physinstalled; 94 95 struct var v; 96 97 #include <sys/systm.h> 98 #include <sys/conf.h> 99 #include <sys/kmem.h> 100 #include <sys/sysmacros.h> 101 #include <sys/bootconf.h> 102 103 /* 104 * Data for segkmem pages that should be resident 105 */ 106 struct vnode kvps[KV_MAX]; 107 108 /* 109 * Data from swapgeneric.c that must be resident. 110 */ 111 struct vnode *rootvp; /* vnode of the root device */ 112 dev_t rootdev; /* dev_t of the root device */ 113 boolean_t root_is_svm; /* root is a mirrored device flag */ 114 boolean_t root_is_ramdisk; /* root is ramdisk */ 115 uint32_t ramdisk_size; /* (KB) currently set only for sparc netboots */ 116 117 /* 118 * dhcp 119 */ 120 #include <sys/socket.h> 121 #include <sys/errno.h> 122 #include <sys/sockio.h> 123 #include <sys/stream.h> 124 #include <sys/stropts.h> 125 #include <sys/dlpi.h> 126 #include <net/if.h> 127 128 int netboot; 129 int obpdebug; 130 char *dhcack; /* dhcp response packet */ 131 int dhcacklen; 132 char *netdev_path; /* Used to cache the netdev_path handed up by boot */ 133 char dhcifname[IFNAMSIZ]; 134 135 /* 136 * Data from arp.c that must be resident. 137 */ 138 #include <net/if_arp.h> 139 #include <netinet/in.h> 140 #include <netinet/in_var.h> 141 #include <netinet/if_ether.h> 142 143 ether_addr_t etherbroadcastaddr = {0xff, 0xff, 0xff, 0xff, 0xff, 0xff}; 144 145 146 /* 147 * Data from timod that must be resident 148 */ 149 150 /* 151 * state transition table for TI interface 152 */ 153 #include <sys/tihdr.h> 154 155 #define nr 127 /* not reachable */ 156 157 char ti_statetbl[TE_NOEVENTS][TS_NOSTATES] = { 158 /* STATES */ 159 /* 0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 */ 160 161 { 1, nr, nr, nr, nr, nr, nr, nr, nr, nr, nr, nr, nr, nr, nr, nr, nr}, 162 {nr, nr, nr, 2, nr, nr, nr, nr, nr, nr, nr, nr, nr, nr, nr, nr, nr}, 163 {nr, nr, nr, 4, nr, nr, nr, nr, nr, nr, nr, nr, nr, nr, nr, nr, nr}, 164 {nr, 3, nr, nr, nr, nr, nr, nr, nr, nr, nr, nr, nr, nr, nr, nr, nr}, 165 {nr, nr, nr, nr, 3, nr, nr, nr, nr, nr, nr, nr, nr, nr, nr, nr, nr}, 166 {nr, 0, 3, nr, 3, 3, nr, nr, 7, nr, nr, nr, 6, 7, 9, 10, 11}, 167 {nr, nr, 0, nr, nr, 6, nr, nr, nr, nr, nr, nr, 3, nr, 3, 3, 3}, 168 {nr, nr, nr, nr, nr, nr, nr, nr, 9, nr, nr, nr, nr, 3, nr, nr, nr}, 169 {nr, nr, nr, nr, nr, nr, nr, nr, 3, nr, nr, nr, nr, 3, nr, nr, nr}, 170 {nr, nr, nr, nr, nr, nr, nr, nr, 7, nr, nr, nr, nr, 7, nr, nr, nr}, 171 {nr, nr, nr, 5, nr, nr, nr, nr, nr, nr, nr, nr, nr, nr, nr, nr, nr}, 172 {nr, nr, nr, nr, nr, nr, nr, 8, nr, nr, nr, nr, nr, nr, nr, nr, nr}, 173 {nr, nr, nr, nr, nr, nr, 12, 13, nr, 14, 15, 16, nr, nr, nr, nr, nr}, 174 {nr, nr, nr, nr, nr, nr, nr, nr, nr, 9, nr, 11, nr, nr, nr, nr, nr}, 175 {nr, nr, nr, nr, nr, nr, nr, nr, nr, 9, nr, 11, nr, nr, nr, nr, nr}, 176 {nr, nr, nr, nr, nr, nr, nr, nr, nr, 10, nr, 3, nr, nr, nr, nr, nr}, 177 {nr, nr, nr, 7, nr, nr, nr, 7, nr, nr, nr, nr, nr, nr, nr, nr, nr}, 178 {nr, nr, nr, nr, nr, nr, 9, nr, nr, nr, nr, nr, nr, nr, nr, nr, nr}, 179 {nr, nr, nr, nr, nr, nr, nr, nr, nr, 9, 10, nr, nr, nr, nr, nr, nr}, 180 {nr, nr, nr, nr, nr, nr, nr, nr, nr, 9, 10, nr, nr, nr, nr, nr, nr}, 181 {nr, nr, nr, nr, nr, nr, nr, nr, nr, 11, 3, nr, nr, nr, nr, nr, nr}, 182 {nr, nr, nr, nr, nr, nr, 3, nr, nr, 3, 3, 3, nr, nr, nr, nr, nr}, 183 {nr, nr, nr, nr, nr, nr, nr, 3, nr, nr, nr, nr, nr, nr, nr, nr, nr}, 184 {nr, nr, nr, nr, nr, nr, nr, 7, nr, nr, nr, nr, nr, nr, nr, nr, nr}, 185 {nr, nr, nr, 9, nr, nr, nr, nr, nr, nr, nr, nr, nr, nr, nr, nr, nr}, 186 {nr, nr, nr, 3, nr, nr, nr, nr, nr, nr, nr, nr, nr, nr, nr, nr, nr}, 187 {nr, nr, nr, 3, nr, nr, nr, nr, nr, nr, nr, nr, nr, nr, nr, nr, nr}, 188 {nr, nr, nr, 3, nr, nr, nr, nr, nr, nr, nr, nr, nr, nr, nr, nr, nr}, 189 }; 190 191 192 #include <sys/tty.h> 193 #include <sys/ptyvar.h> 194 195 static void store_fetch_initspace(); 196 197 /* 198 * Allocate tunable structures at runtime. 199 */ 200 void 201 space_init(void) 202 { 203 pty_initspace(); 204 store_fetch_initspace(); 205 } 206 207 int ts_dispatch_extended = -1; /* set in ts_getdptbl or set_platform_default */ 208 209 /* 210 * Previously defined in consmsconf.c ... 211 */ 212 dev_t kbddev = NODEV; 213 dev_t mousedev = NODEV; 214 dev_t stdindev = NODEV; 215 struct vnode *wsconsvp; 216 217 dev_t fbdev = NODEV; 218 struct vnode *fbvp; 219 dev_info_t *fbdip; 220 221 /* 222 * moved from cons.c because they must be resident in the kernel. 223 */ 224 vnode_t *rconsvp; 225 dev_t rconsdev; 226 dev_t uconsdev = NODEV; 227 228 /* 229 * serial virtual console vnode pointer. 230 */ 231 vnode_t *vsconsvp = NULL; 232 233 /* 234 * Flag whether console fb output is using PROM/PROM emulation 235 * terminal emulator, or is using the kernel terminal emulator. 236 */ 237 int consmode = CONS_FW; 238 239 /* 240 * The following allows systems to disable use of the kernel 241 * terminal emulator (retreat to PROM terminal emulator if there 242 * is PROM). 243 */ 244 int cons_tem_disable; 245 246 /* 247 * consconfig() in autoconf.c sets this; it's the vnode of the distinguished 248 * keyboard/frame buffer combination, aka the workstation console. 249 */ 250 vnode_t *rwsconsvp; 251 dev_t rwsconsdev; 252 253 /* 254 * Platform console abort policy. 255 * Platforms may override the default software policy, if such hardware 256 * (e.g. keyswitches with a secure position) exists. 257 */ 258 int abort_enable = KIOCABORTENABLE; 259 260 /* from cpc.c */ 261 uint_t kcpc_key; /* TSD key for CPU performance counter context */ 262 263 /* 264 * storing and retrieving data by string key 265 * 266 * this mechanism allows a consumer to store and retrieve by name a pointer 267 * to some space maintained by the consumer. 268 * For example, a driver or module may want to have persistent data 269 * over unloading/loading cycles. The pointer is typically to some 270 * kmem_alloced space and it should not be pointing to data that will 271 * be destroyed when the module is unloaded. 272 */ 273 static mod_hash_t *space_hash; 274 static char *space_hash_name = "space_hash"; 275 static size_t space_hash_nchains = 8; 276 277 static void 278 store_fetch_initspace() 279 { 280 space_hash = mod_hash_create_strhash(space_hash_name, 281 space_hash_nchains, mod_hash_null_valdtor); 282 ASSERT(space_hash); 283 } 284 285 int 286 space_store(char *key, uintptr_t ptr) 287 { 288 char *s; 289 int rval; 290 size_t l; 291 292 /* some sanity checks first */ 293 if (key == NULL) { 294 return (-1); 295 } 296 l = (size_t)strlen(key); 297 if (l == 0) { 298 return (-1); 299 } 300 301 /* increment for null terminator */ 302 l++; 303 304 /* alloc space for the string, mod_hash_insert will deallocate */ 305 s = kmem_alloc(l, KM_SLEEP); 306 bcopy(key, s, l); 307 308 rval = mod_hash_insert(space_hash, 309 (mod_hash_key_t)s, (mod_hash_val_t)ptr); 310 311 switch (rval) { 312 case 0: 313 break; 314 #ifdef DEBUG 315 case MH_ERR_DUPLICATE: 316 cmn_err(CE_WARN, "space_store: duplicate key %s", key); 317 rval = -1; 318 break; 319 case MH_ERR_NOMEM: 320 cmn_err(CE_WARN, "space_store: no mem for key %s", key); 321 rval = -1; 322 break; 323 default: 324 cmn_err(CE_WARN, "space_store: unspecified error for key %s", 325 key); 326 rval = -1; 327 break; 328 #else 329 default: 330 rval = -1; 331 break; 332 #endif 333 } 334 335 return (rval); 336 } 337 338 uintptr_t 339 space_fetch(char *key) 340 { 341 uintptr_t ptr = 0; 342 mod_hash_val_t val; 343 int rval; 344 345 if (key) { 346 rval = mod_hash_find(space_hash, (mod_hash_key_t)key, &val); 347 if (rval == 0) { 348 ptr = (uintptr_t)val; 349 } 350 } 351 352 return (ptr); 353 } 354 355 void 356 space_free(char *key) 357 { 358 if (key) { 359 (void) mod_hash_destroy(space_hash, (mod_hash_key_t)key); 360 } 361 } 362 363 /* 364 * Support for CRC32. At present all calculations are done in simple 365 * macros, so all we need is somewhere to declare the global lookup table. 366 */ 367 368 #include <sys/crc32.h> 369 370 const uint32_t crc32_table[256] = { CRC32_TABLE }; 371 372 /* 373 * We need to fanout load from NIC which can overwhelm a single CPU. 374 * This becomes especially important on systems having slow CPUs 375 * (sun4v architecture). mac_soft_ring_enable is false on all 376 * systems except sun4v. On sun4v, they get enabled by default (see 377 * sun4v/os/mach_startup.c). 378 */ 379 boolean_t mac_soft_ring_enable = B_FALSE; 380 381 /* 382 * Global iscsi boot prop 383 */ 384 ib_boot_prop_t *iscsiboot_prop = NULL; 385