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 * Copyright 2016 Nexenta Systems, Inc. 26 */ 27 28 /* 29 * The intent of this file is to contain any data that must remain 30 * resident in the kernel. 31 * 32 * space_store(), space_fetch(), and space_free() have been added to 33 * easily store and retrieve kernel resident data. 34 * These functions are recommended rather than adding new variables to 35 * this file. 36 * 37 * Note that it's possible for name collisions to occur. In order to 38 * prevent collisions, it's recommended that the convention in 39 * PSARC/1997/389 be used. If a collision occurs, then space_store will 40 * fail. 41 */ 42 43 #include <sys/types.h> 44 #include <sys/param.h> 45 #include <sys/var.h> 46 #include <sys/proc.h> 47 #include <sys/signal.h> 48 #include <sys/utsname.h> 49 #include <sys/buf.h> 50 #include <sys/cred.h> 51 #include <sys/vfs.h> 52 #include <sys/vnode.h> 53 #include <sys/sysinfo.h> 54 #include <sys/t_lock.h> 55 #include <sys/vmem.h> 56 #include <sys/modhash.h> 57 #include <sys/cmn_err.h> 58 59 #include <sys/strredir.h> 60 #include <sys/kbio.h> 61 #include <sys/consdev.h> 62 #include <sys/wscons.h> 63 #include <sys/bootprops.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 for segkmem pages that should be resident 106 */ 107 struct vnode kvps[KV_MAX]; 108 109 /* 110 * Data from swapgeneric.c that must be resident. 111 */ 112 struct vnode *rootvp; /* vnode of the root device */ 113 dev_t rootdev; /* dev_t of the root device */ 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 dev_t diagdev = NODEV; 216 struct vnode *wsconsvp; 217 218 dev_t fbdev = NODEV; 219 struct vnode *fbvp; 220 dev_info_t *fbdip; 221 222 /* 223 * moved from cons.c because they must be resident in the kernel. 224 */ 225 vnode_t *rconsvp; 226 dev_t rconsdev; 227 dev_t uconsdev = NODEV; 228 229 /* 230 * serial virtual console vnode pointer. 231 */ 232 vnode_t *vsconsvp = NULL; 233 234 /* 235 * Flag whether console fb output is using PROM/PROM emulation 236 * terminal emulator, or is using the kernel terminal emulator. 237 */ 238 int consmode = CONS_FW; 239 240 /* 241 * The following allows systems to disable use of the kernel 242 * terminal emulator (retreat to PROM terminal emulator if there 243 * is PROM). 244 */ 245 int cons_tem_disable; 246 247 /* 248 * consconfig() in autoconf.c sets this; it's the vnode of the distinguished 249 * keyboard/frame buffer combination, aka the workstation console. 250 */ 251 vnode_t *rwsconsvp; 252 dev_t rwsconsdev; 253 254 /* 255 * Platform console abort policy. 256 * Platforms may override the default software policy, if such hardware 257 * (e.g. keyswitches with a secure position) exists. 258 */ 259 int abort_enable = KIOCABORTENABLE; 260 261 /* from cpc.c */ 262 uint_t kcpc_key; /* TSD key for CPU performance counter context */ 263 264 /* 265 * storing and retrieving data by string key 266 * 267 * this mechanism allows a consumer to store and retrieve by name a pointer 268 * to some space maintained by the consumer. 269 * For example, a driver or module may want to have persistent data 270 * over unloading/loading cycles. The pointer is typically to some 271 * kmem_alloced space and it should not be pointing to data that will 272 * be destroyed when the module is unloaded. 273 */ 274 static mod_hash_t *space_hash; 275 static char *space_hash_name = "space_hash"; 276 static size_t space_hash_nchains = 8; 277 278 static void 279 store_fetch_initspace() 280 { 281 space_hash = mod_hash_create_strhash(space_hash_name, 282 space_hash_nchains, mod_hash_null_valdtor); 283 ASSERT(space_hash); 284 } 285 286 int 287 space_store(char *key, uintptr_t ptr) 288 { 289 char *s; 290 int rval; 291 size_t l; 292 293 /* some sanity checks first */ 294 if (key == NULL) { 295 return (-1); 296 } 297 l = (size_t)strlen(key); 298 if (l == 0) { 299 return (-1); 300 } 301 302 /* increment for null terminator */ 303 l++; 304 305 /* alloc space for the string, mod_hash_insert will deallocate */ 306 s = kmem_alloc(l, KM_SLEEP); 307 bcopy(key, s, l); 308 309 rval = mod_hash_insert(space_hash, 310 (mod_hash_key_t)s, (mod_hash_val_t)ptr); 311 312 switch (rval) { 313 case 0: 314 break; 315 #ifdef DEBUG 316 case MH_ERR_DUPLICATE: 317 cmn_err(CE_WARN, "space_store: duplicate key %s", key); 318 rval = -1; 319 break; 320 case MH_ERR_NOMEM: 321 cmn_err(CE_WARN, "space_store: no mem for key %s", key); 322 rval = -1; 323 break; 324 default: 325 cmn_err(CE_WARN, "space_store: unspecified error for key %s", 326 key); 327 rval = -1; 328 break; 329 #else 330 default: 331 rval = -1; 332 break; 333 #endif 334 } 335 336 return (rval); 337 } 338 339 uintptr_t 340 space_fetch(char *key) 341 { 342 uintptr_t ptr = 0; 343 mod_hash_val_t val; 344 int rval; 345 346 if (key) { 347 rval = mod_hash_find(space_hash, (mod_hash_key_t)key, &val); 348 if (rval == 0) { 349 ptr = (uintptr_t)val; 350 } 351 } 352 353 return (ptr); 354 } 355 356 void 357 space_free(char *key) 358 { 359 if (key) { 360 (void) mod_hash_destroy(space_hash, (mod_hash_key_t)key); 361 } 362 } 363 364 /* 365 * Support for CRC32. At present all calculations are done in simple 366 * macros, so all we need is somewhere to declare the global lookup table. 367 */ 368 369 #include <sys/crc32.h> 370 371 const uint32_t crc32_table[256] = { CRC32_TABLE }; 372 373 /* 374 * We need to fanout load from NIC which can overwhelm a single CPU. 375 * This becomes especially important on systems having slow CPUs 376 * (sun4v architecture). mac_soft_ring_enable is false on all 377 * systems except sun4v. On sun4v, they get enabled by default (see 378 * sun4v/os/mach_startup.c). 379 */ 380 boolean_t mac_soft_ring_enable = B_FALSE; 381 382 /* 383 * Global iscsi boot prop 384 */ 385 ib_boot_prop_t *iscsiboot_prop = NULL; 386