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 from swapgeneric.c that must be resident. 105 */ 106 struct vnode *rootvp; /* vnode of the root device */ 107 dev_t rootdev; /* dev_t of the root device */ 108 boolean_t root_is_svm; /* root is a mirrored device flag */ 109 boolean_t root_is_ramdisk; /* root is ramdisk */ 110 uint32_t ramdisk_size; /* (KB) currently set only for sparc netboots */ 111 112 /* 113 * dhcp 114 */ 115 #include <sys/socket.h> 116 #include <sys/errno.h> 117 #include <sys/sockio.h> 118 #include <sys/stream.h> 119 #include <sys/stropts.h> 120 #include <sys/dlpi.h> 121 #include <net/if.h> 122 123 int netboot; 124 int obpdebug; 125 char *dhcack; /* dhcp response packet */ 126 int dhcacklen; 127 char *netdev_path; /* Used to cache the netdev_path handed up by boot */ 128 char dhcifname[IFNAMSIZ]; 129 130 /* 131 * Data from arp.c that must be resident. 132 */ 133 #include <net/if_arp.h> 134 #include <netinet/in.h> 135 #include <netinet/in_var.h> 136 #include <netinet/if_ether.h> 137 138 ether_addr_t etherbroadcastaddr = {0xff, 0xff, 0xff, 0xff, 0xff, 0xff}; 139 140 141 /* 142 * Data from timod that must be resident 143 */ 144 145 /* 146 * state transition table for TI interface 147 */ 148 #include <sys/tihdr.h> 149 150 #define nr 127 /* not reachable */ 151 152 char ti_statetbl[TE_NOEVENTS][TS_NOSTATES] = { 153 /* STATES */ 154 /* 0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 */ 155 156 { 1, nr, nr, nr, nr, nr, nr, nr, nr, nr, nr, nr, nr, nr, nr, nr, nr}, 157 {nr, nr, nr, 2, nr, nr, nr, nr, nr, nr, nr, nr, nr, nr, nr, nr, nr}, 158 {nr, nr, nr, 4, nr, nr, nr, nr, nr, nr, nr, nr, nr, nr, nr, nr, nr}, 159 {nr, 3, nr, nr, nr, nr, nr, nr, nr, nr, nr, nr, nr, nr, nr, nr, nr}, 160 {nr, nr, nr, nr, 3, nr, nr, nr, nr, nr, nr, nr, nr, nr, nr, nr, nr}, 161 {nr, 0, 3, nr, 3, 3, nr, nr, 7, nr, nr, nr, 6, 7, 9, 10, 11}, 162 {nr, nr, 0, nr, nr, 6, nr, nr, nr, nr, nr, nr, 3, nr, 3, 3, 3}, 163 {nr, nr, nr, nr, nr, nr, nr, nr, 9, nr, nr, nr, nr, 3, nr, nr, nr}, 164 {nr, nr, nr, nr, nr, nr, nr, nr, 3, nr, nr, nr, nr, 3, nr, nr, nr}, 165 {nr, nr, nr, nr, nr, nr, nr, nr, 7, nr, nr, nr, nr, 7, nr, nr, nr}, 166 {nr, nr, nr, 5, nr, nr, nr, nr, nr, nr, nr, nr, nr, nr, nr, nr, nr}, 167 {nr, nr, nr, nr, nr, nr, nr, 8, nr, nr, nr, nr, nr, nr, nr, nr, nr}, 168 {nr, nr, nr, nr, nr, nr, 12, 13, nr, 14, 15, 16, nr, nr, nr, nr, nr}, 169 {nr, nr, nr, nr, nr, nr, nr, nr, nr, 9, nr, 11, nr, nr, nr, nr, nr}, 170 {nr, nr, nr, nr, nr, nr, nr, nr, nr, 9, nr, 11, nr, nr, nr, nr, nr}, 171 {nr, nr, nr, nr, nr, nr, nr, nr, nr, 10, nr, 3, nr, nr, nr, nr, nr}, 172 {nr, nr, nr, 7, nr, nr, nr, 7, nr, nr, nr, nr, nr, nr, nr, nr, nr}, 173 {nr, nr, nr, nr, nr, nr, 9, nr, nr, nr, nr, nr, nr, nr, nr, nr, nr}, 174 {nr, nr, nr, nr, nr, nr, nr, nr, nr, 9, 10, nr, nr, nr, nr, nr, nr}, 175 {nr, nr, nr, nr, nr, nr, nr, nr, nr, 9, 10, nr, nr, nr, nr, nr, nr}, 176 {nr, nr, nr, nr, nr, nr, nr, nr, nr, 11, 3, nr, nr, nr, nr, nr, nr}, 177 {nr, nr, nr, nr, nr, nr, 3, nr, nr, 3, 3, 3, nr, nr, nr, nr, nr}, 178 {nr, nr, nr, nr, nr, nr, nr, 3, nr, nr, nr, nr, nr, nr, nr, nr, nr}, 179 {nr, nr, nr, nr, nr, nr, nr, 7, nr, nr, nr, nr, nr, nr, nr, nr, nr}, 180 {nr, nr, nr, 9, nr, nr, nr, nr, nr, nr, nr, nr, nr, nr, nr, nr, nr}, 181 {nr, nr, nr, 3, nr, nr, nr, nr, nr, nr, nr, nr, nr, nr, nr, nr, nr}, 182 {nr, nr, nr, 3, nr, nr, nr, nr, nr, nr, nr, nr, nr, nr, nr, nr, nr}, 183 {nr, nr, nr, 3, nr, nr, nr, nr, nr, nr, nr, nr, nr, nr, nr, nr, nr}, 184 }; 185 186 187 #include <sys/tty.h> 188 #include <sys/ptyvar.h> 189 190 static void store_fetch_initspace(); 191 192 /* 193 * Allocate tunable structures at runtime. 194 */ 195 void 196 space_init(void) 197 { 198 pty_initspace(); 199 store_fetch_initspace(); 200 } 201 202 int ts_dispatch_extended = -1; /* set in ts_getdptbl or set_platform_default */ 203 204 /* 205 * Previously defined in consmsconf.c ... 206 */ 207 dev_t kbddev = NODEV; 208 dev_t mousedev = NODEV; 209 dev_t stdindev = NODEV; 210 struct vnode *wsconsvp; 211 212 dev_t fbdev = NODEV; 213 struct vnode *fbvp; 214 dev_info_t *fbdip; 215 216 /* 217 * moved from cons.c because they must be resident in the kernel. 218 */ 219 vnode_t *rconsvp; 220 dev_t rconsdev; 221 dev_t uconsdev = NODEV; 222 223 /* 224 * serial virtual console vnode pointer. 225 */ 226 vnode_t *vsconsvp = NULL; 227 228 /* 229 * Flag whether console fb output is using PROM/PROM emulation 230 * terminal emulator, or is using the kernel terminal emulator. 231 */ 232 int consmode = CONS_FW; 233 234 /* 235 * The following allows systems to disable use of the kernel 236 * terminal emulator (retreat to PROM terminal emulator if there 237 * is PROM). 238 */ 239 int cons_tem_disable; 240 241 /* 242 * consconfig() in autoconf.c sets this; it's the vnode of the distinguished 243 * keyboard/frame buffer combination, aka the workstation console. 244 */ 245 vnode_t *rwsconsvp; 246 dev_t rwsconsdev; 247 248 /* 249 * Platform console abort policy. 250 * Platforms may override the default software policy, if such hardware 251 * (e.g. keyswitches with a secure position) exists. 252 */ 253 int abort_enable = KIOCABORTENABLE; 254 255 /* from cpc.c */ 256 uint_t kcpc_key; /* TSD key for CPU performance counter context */ 257 258 /* 259 * storing and retrieving data by string key 260 * 261 * this mechanism allows a consumer to store and retrieve by name a pointer 262 * to some space maintained by the consumer. 263 * For example, a driver or module may want to have persistent data 264 * over unloading/loading cycles. The pointer is typically to some 265 * kmem_alloced space and it should not be pointing to data that will 266 * be destroyed when the module is unloaded. 267 */ 268 static mod_hash_t *space_hash; 269 static char *space_hash_name = "space_hash"; 270 static size_t space_hash_nchains = 8; 271 272 static void 273 store_fetch_initspace() 274 { 275 space_hash = mod_hash_create_strhash(space_hash_name, 276 space_hash_nchains, mod_hash_null_valdtor); 277 ASSERT(space_hash); 278 } 279 280 int 281 space_store(char *key, uintptr_t ptr) 282 { 283 char *s; 284 int rval; 285 size_t l; 286 287 /* some sanity checks first */ 288 if (key == NULL) { 289 return (-1); 290 } 291 l = (size_t)strlen(key); 292 if (l == 0) { 293 return (-1); 294 } 295 296 /* increment for null terminator */ 297 l++; 298 299 /* alloc space for the string, mod_hash_insert will deallocate */ 300 s = kmem_alloc(l, KM_SLEEP); 301 bcopy(key, s, l); 302 303 rval = mod_hash_insert(space_hash, 304 (mod_hash_key_t)s, (mod_hash_val_t)ptr); 305 306 switch (rval) { 307 case 0: 308 break; 309 #ifdef DEBUG 310 case MH_ERR_DUPLICATE: 311 cmn_err(CE_WARN, "space_store: duplicate key %s", key); 312 rval = -1; 313 break; 314 case MH_ERR_NOMEM: 315 cmn_err(CE_WARN, "space_store: no mem for key %s", key); 316 rval = -1; 317 break; 318 default: 319 cmn_err(CE_WARN, "space_store: unspecified error for key %s", 320 key); 321 rval = -1; 322 break; 323 #else 324 default: 325 rval = -1; 326 break; 327 #endif 328 } 329 330 return (rval); 331 } 332 333 uintptr_t 334 space_fetch(char *key) 335 { 336 uintptr_t ptr = 0; 337 mod_hash_val_t val; 338 int rval; 339 340 if (key) { 341 rval = mod_hash_find(space_hash, (mod_hash_key_t)key, &val); 342 if (rval == 0) { 343 ptr = (uintptr_t)val; 344 } 345 } 346 347 return (ptr); 348 } 349 350 void 351 space_free(char *key) 352 { 353 if (key) { 354 (void) mod_hash_destroy(space_hash, (mod_hash_key_t)key); 355 } 356 } 357 358 /* 359 * Support for CRC32. At present all calculations are done in simple 360 * macros, so all we need is somewhere to declare the global lookup table. 361 */ 362 363 #include <sys/crc32.h> 364 365 const uint32_t crc32_table[256] = { CRC32_TABLE }; 366 367 /* 368 * We need to fanout load from NIC which can overwhelm a single CPU. 369 * This becomes especially important on systems having slow CPUs 370 * (sun4v architecture). mac_soft_ring_enable is false on all 371 * systems except sun4v. On sun4v, they get enabled by default (see 372 * sun4v/os/mach_startup.c). 373 */ 374 boolean_t mac_soft_ring_enable = B_FALSE; 375 376 /* 377 * Global iscsi boot prop 378 */ 379 ib_boot_prop_t *iscsiboot_prop = NULL; 380