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 #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 for segkmem pages that should be resident 104 */ 105 struct vnode kvps[KV_MAX]; 106 107 /* 108 * Data from swapgeneric.c that must be resident. 109 */ 110 struct vnode *rootvp; /* vnode of the root device */ 111 dev_t rootdev; /* dev_t of the root device */ 112 boolean_t root_is_ramdisk; /* root is ramdisk */ 113 uint32_t ramdisk_size; /* (KB) currently set only for sparc netboots */ 114 115 /* 116 * dhcp 117 */ 118 #include <sys/socket.h> 119 #include <sys/errno.h> 120 #include <sys/sockio.h> 121 #include <sys/stream.h> 122 #include <sys/stropts.h> 123 #include <sys/dlpi.h> 124 #include <net/if.h> 125 126 int netboot; 127 int obpdebug; 128 char *dhcack; /* dhcp response packet */ 129 int dhcacklen; 130 char *netdev_path; /* Used to cache the netdev_path handed up by boot */ 131 char dhcifname[IFNAMSIZ]; 132 133 /* 134 * Data from arp.c that must be resident. 135 */ 136 #include <net/if_arp.h> 137 #include <netinet/in.h> 138 #include <netinet/in_var.h> 139 #include <netinet/if_ether.h> 140 141 ether_addr_t etherbroadcastaddr = {0xff, 0xff, 0xff, 0xff, 0xff, 0xff}; 142 143 144 /* 145 * Data from timod that must be resident 146 */ 147 148 /* 149 * state transition table for TI interface 150 */ 151 #include <sys/tihdr.h> 152 153 #define nr 127 /* not reachable */ 154 155 char ti_statetbl[TE_NOEVENTS][TS_NOSTATES] = { 156 /* STATES */ 157 /* 0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 */ 158 159 { 1, nr, nr, nr, nr, nr, nr, nr, nr, nr, nr, nr, nr, nr, nr, nr, nr}, 160 {nr, nr, nr, 2, nr, nr, nr, nr, nr, nr, nr, nr, nr, nr, nr, nr, nr}, 161 {nr, nr, nr, 4, nr, nr, nr, nr, nr, nr, nr, nr, nr, nr, nr, nr, nr}, 162 {nr, 3, nr, nr, nr, nr, nr, nr, nr, nr, nr, nr, nr, nr, nr, nr, nr}, 163 {nr, nr, nr, nr, 3, nr, nr, nr, nr, nr, nr, nr, nr, nr, nr, nr, nr}, 164 {nr, 0, 3, nr, 3, 3, nr, nr, 7, nr, nr, nr, 6, 7, 9, 10, 11}, 165 {nr, nr, 0, nr, nr, 6, nr, nr, nr, nr, nr, nr, 3, nr, 3, 3, 3}, 166 {nr, nr, nr, nr, nr, nr, nr, nr, 9, nr, nr, nr, nr, 3, nr, nr, nr}, 167 {nr, nr, nr, nr, nr, nr, nr, nr, 3, nr, nr, nr, nr, 3, nr, nr, nr}, 168 {nr, nr, nr, nr, nr, nr, nr, nr, 7, nr, nr, nr, nr, 7, nr, nr, nr}, 169 {nr, nr, nr, 5, nr, nr, nr, nr, nr, nr, nr, nr, nr, nr, nr, nr, nr}, 170 {nr, nr, nr, nr, nr, nr, nr, 8, nr, nr, nr, nr, nr, nr, nr, nr, nr}, 171 {nr, nr, nr, nr, nr, nr, 12, 13, nr, 14, 15, 16, nr, nr, nr, nr, nr}, 172 {nr, nr, nr, nr, nr, nr, nr, nr, nr, 9, nr, 11, nr, nr, nr, nr, nr}, 173 {nr, nr, nr, nr, nr, nr, nr, nr, nr, 9, nr, 11, nr, nr, nr, nr, nr}, 174 {nr, nr, nr, nr, nr, nr, nr, nr, nr, 10, nr, 3, nr, nr, nr, nr, nr}, 175 {nr, nr, nr, 7, nr, nr, nr, 7, nr, nr, nr, nr, nr, nr, nr, nr, nr}, 176 {nr, nr, nr, nr, nr, nr, 9, nr, nr, nr, nr, nr, nr, nr, nr, nr, nr}, 177 {nr, nr, nr, nr, nr, nr, nr, nr, nr, 9, 10, nr, nr, nr, nr, nr, nr}, 178 {nr, nr, nr, nr, nr, nr, nr, nr, nr, 9, 10, nr, nr, nr, nr, nr, nr}, 179 {nr, nr, nr, nr, nr, nr, nr, nr, nr, 11, 3, nr, nr, nr, nr, nr, nr}, 180 {nr, nr, nr, nr, nr, nr, 3, nr, nr, 3, 3, 3, nr, nr, nr, nr, nr}, 181 {nr, nr, nr, nr, nr, nr, nr, 3, nr, nr, nr, nr, nr, nr, nr, nr, nr}, 182 {nr, nr, nr, nr, nr, nr, nr, 7, nr, nr, nr, nr, nr, nr, nr, nr, nr}, 183 {nr, nr, nr, 9, nr, nr, nr, nr, nr, nr, nr, nr, nr, nr, nr, nr, nr}, 184 {nr, nr, nr, 3, nr, nr, nr, nr, nr, nr, nr, nr, nr, nr, nr, nr, nr}, 185 {nr, nr, nr, 3, 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 }; 188 189 190 #include <sys/tty.h> 191 #include <sys/ptyvar.h> 192 193 static void store_fetch_initspace(); 194 195 /* 196 * Allocate tunable structures at runtime. 197 */ 198 void 199 space_init(void) 200 { 201 pty_initspace(); 202 store_fetch_initspace(); 203 } 204 205 int ts_dispatch_extended = -1; /* set in ts_getdptbl or set_platform_default */ 206 207 /* 208 * Previously defined in consmsconf.c ... 209 */ 210 dev_t kbddev = NODEV; 211 dev_t mousedev = NODEV; 212 dev_t stdindev = NODEV; 213 dev_t diagdev = NODEV; 214 struct vnode *wsconsvp; 215 216 dev_t fbdev = NODEV; 217 struct vnode *fbvp; 218 dev_info_t *fbdip; 219 220 /* 221 * moved from cons.c because they must be resident in the kernel. 222 */ 223 vnode_t *rconsvp; 224 dev_t rconsdev; 225 dev_t uconsdev = NODEV; 226 227 /* 228 * serial virtual console vnode pointer. 229 */ 230 vnode_t *vsconsvp = NULL; 231 232 /* 233 * Flag whether console fb output is using PROM/PROM emulation 234 * terminal emulator, or is using the kernel terminal emulator. 235 */ 236 int consmode = CONS_FW; 237 238 /* 239 * The following allows systems to disable use of the kernel 240 * terminal emulator (retreat to PROM terminal emulator if there 241 * is PROM). 242 */ 243 int cons_tem_disable; 244 245 /* 246 * consconfig() in autoconf.c sets this; it's the vnode of the distinguished 247 * keyboard/frame buffer combination, aka the workstation console. 248 */ 249 vnode_t *rwsconsvp; 250 dev_t rwsconsdev; 251 252 /* 253 * Platform console abort policy. 254 * Platforms may override the default software policy, if such hardware 255 * (e.g. keyswitches with a secure position) exists. 256 */ 257 int abort_enable = KIOCABORTENABLE; 258 259 /* from cpc.c */ 260 uint_t kcpc_key; /* TSD key for CPU performance counter context */ 261 262 /* 263 * storing and retrieving data by string key 264 * 265 * this mechanism allows a consumer to store and retrieve by name a pointer 266 * to some space maintained by the consumer. 267 * For example, a driver or module may want to have persistent data 268 * over unloading/loading cycles. The pointer is typically to some 269 * kmem_alloced space and it should not be pointing to data that will 270 * be destroyed when the module is unloaded. 271 */ 272 static mod_hash_t *space_hash; 273 static char *space_hash_name = "space_hash"; 274 static size_t space_hash_nchains = 8; 275 276 static void 277 store_fetch_initspace() 278 { 279 space_hash = mod_hash_create_strhash(space_hash_name, 280 space_hash_nchains, mod_hash_null_valdtor); 281 ASSERT(space_hash); 282 } 283 284 int 285 space_store(char *key, uintptr_t ptr) 286 { 287 char *s; 288 int rval; 289 size_t l; 290 291 /* some sanity checks first */ 292 if (key == NULL) { 293 return (-1); 294 } 295 l = (size_t)strlen(key); 296 if (l == 0) { 297 return (-1); 298 } 299 300 /* increment for null terminator */ 301 l++; 302 303 /* alloc space for the string, mod_hash_insert will deallocate */ 304 s = kmem_alloc(l, KM_SLEEP); 305 bcopy(key, s, l); 306 307 rval = mod_hash_insert(space_hash, 308 (mod_hash_key_t)s, (mod_hash_val_t)ptr); 309 310 switch (rval) { 311 case 0: 312 break; 313 #ifdef DEBUG 314 case MH_ERR_DUPLICATE: 315 cmn_err(CE_WARN, "space_store: duplicate key %s", key); 316 rval = -1; 317 break; 318 case MH_ERR_NOMEM: 319 cmn_err(CE_WARN, "space_store: no mem for key %s", key); 320 rval = -1; 321 break; 322 default: 323 cmn_err(CE_WARN, "space_store: unspecified error for key %s", 324 key); 325 rval = -1; 326 break; 327 #else 328 default: 329 rval = -1; 330 break; 331 #endif 332 } 333 334 return (rval); 335 } 336 337 uintptr_t 338 space_fetch(char *key) 339 { 340 uintptr_t ptr = 0; 341 mod_hash_val_t val; 342 int rval; 343 344 if (key) { 345 rval = mod_hash_find(space_hash, (mod_hash_key_t)key, &val); 346 if (rval == 0) { 347 ptr = (uintptr_t)val; 348 } 349 } 350 351 return (ptr); 352 } 353 354 void 355 space_free(char *key) 356 { 357 if (key) { 358 (void) mod_hash_destroy(space_hash, (mod_hash_key_t)key); 359 } 360 } 361 362 /* 363 * Support for CRC32. At present all calculations are done in simple 364 * macros, so all we need is somewhere to declare the global lookup table. 365 */ 366 367 #include <sys/crc32.h> 368 369 const uint32_t crc32_table[256] = { CRC32_TABLE }; 370 371 /* 372 * We need to fanout load from NIC which can overwhelm a single CPU. 373 * This becomes especially important on systems having slow CPUs 374 * (sun4v architecture). mac_soft_ring_enable is false on all 375 * systems except sun4v. On sun4v, they get enabled by default (see 376 * sun4v/os/mach_startup.c). 377 */ 378 boolean_t mac_soft_ring_enable = B_FALSE; 379 380 /* 381 * Global iscsi boot prop 382 */ 383 ib_boot_prop_t *iscsiboot_prop = NULL; 384