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 * Copyright 2009 Sun Microsystems, Inc. All rights reserved. 23 * Use is subject to license terms. 24 */ 25 26 #ifndef _SYS_DEVINFO_IMPL_H 27 #define _SYS_DEVINFO_IMPL_H 28 29 #include <sys/ddi_impldefs.h> 30 31 /* 32 * This file is separate from libdevinfo.h because the devinfo driver 33 * needs to know about the stuff. Library consumer should not care 34 * about stuff defined here. 35 * 36 * The only exception is di_priv_data (consolidation private) and 37 * DINFO* ioctls. 38 */ 39 40 #ifdef __cplusplus 41 extern "C" { 42 #endif 43 44 /* ioctl commands for devinfo driver */ 45 46 #define DIIOC (0xdf<<8) 47 #define DIIOC_MASK (0xffff00ff) 48 49 /* 50 * Any combination of the following ORed together will take a snapshot 51 * of the device configuration data. 52 */ 53 #define DINFOSUBTREE (DIIOC | 0x01) /* include subtree */ 54 #define DINFOMINOR (DIIOC | 0x02) /* include minor data */ 55 #define DINFOPROP (DIIOC | 0x04) /* include properties */ 56 #define DINFOPATH (DIIOC | 0x08) /* include i/o pathing information */ 57 58 /* private bits */ 59 #define DINFOPRIVDATA (DIIOC | 0x10) /* include private data */ 60 #define DINFOFORCE (DIIOC | 0x20) /* force load all drivers */ 61 #define DINFOCACHE (DIIOC | 0x100000) /* use cached data */ 62 #define DINFOCLEANUP (DIIOC | 0x200000) /* cleanup /etc/devices files */ 63 64 /* new public flag for the layered drivers framework */ 65 #define DINFOLYR (DIIOC | 0x40) /* get device layering information */ 66 67 /* 68 * Straight ioctl commands, not bitwise operation 69 */ 70 #define DINFOUSRLD (DIIOC | 0x80) /* copy snapshot to usrland */ 71 #define DINFOLODRV (DIIOC | 0x81) /* force load a driver */ 72 #define DINFOIDENT (DIIOC | 0x82) /* identify the driver */ 73 74 /* 75 * ioctl for taking a snapshot a single node and all nodes 76 */ 77 #define DINFOCPYONE DIIOC 78 #define DINFOCPYALL (DINFOSUBTREE | DINFOPROP | DINFOMINOR) 79 80 #define DI_MAGIC 0xdfdf /* magic number returned by DINFOIDENT */ 81 82 /* driver ops encoding */ 83 84 #define DI_BUS_OPS 0x1 85 #define DI_CB_OPS 0x2 86 #define DI_STREAM_OPS 0x4 87 88 /* property list enumeration */ 89 90 #define DI_PROP_DRV_LIST 0 91 #define DI_PROP_SYS_LIST 1 92 #define DI_PROP_GLB_LIST 2 93 #define DI_PROP_HW_LIST 3 94 95 /* misc parameters */ 96 97 #define MAX_TREE_DEPTH 64 98 #define MAX_PTR_IN_PRV 5 99 #define DI_SNAPSHOT_VERSION_0 0 /* reserved */ 100 #define DI_SNAPSHOT_VERSION_1 1 /* reserved */ 101 #define DI_SNAPSHOT_VERSION_2 2 /* reserved */ 102 #define DI_SNAPSHOT_VERSION DI_SNAPSHOT_VERSION_2 /* current version */ 103 #define DI_PRIVDATA_VERSION_0 10 /* Start from 10 so caller must set */ 104 #define DI_BIG_ENDIAN 0 /* reserved */ 105 #define DI_LITTLE_ENDIAN 1 /* reserved */ 106 107 #define DI_CACHE_MAGIC 0xdfcac6ed /* magic # for cache */ 108 #define DI_CACHE_PERMS (0444) 109 #define DI_CACHE_SNAPSHOT_FLAGS \ 110 (DINFOFORCE|DINFOSUBTREE|DINFOMINOR|DINFOPROP|DINFOPATH) 111 112 #define DI_NODE(addr) ((struct di_node *)((void *)(addr))) 113 #define DI_MINOR(addr) ((struct di_minor *)((void *)(addr))) 114 #define DI_PROP(addr) ((struct di_prop *)((void *)(addr))) 115 #define DI_PATH(addr) ((struct di_path *)((void *)(addr))) 116 #define DI_PATHPROP(addr) ((struct di_path_prop *)((void *)(addr))) 117 #define DI_ALL(addr) ((struct di_all *)((void *)(addr))) 118 #define DI_DEVNM(addr) ((struct di_devnm *)((void *)(addr))) 119 #define DI_LINK(addr) ((struct di_link *)((void *)(addr))) 120 #define DI_LNODE(addr) ((struct di_lnode *)((void *)(addr))) 121 #define DI_PRIV_FORMAT(addr) ((struct di_priv_format *)((void *)(addr))) 122 123 /* 124 * multipath component definitions: Follows the registered component of 125 * the mpxio system. 126 */ 127 #define MULTIPATH_COMPONENT_NONE 0 128 #define MULTIPATH_COMPONENT_VHCI 0x1 129 #define MULTIPATH_COMPONENT_PHCI 0x2 130 #define MULTIPATH_COMPONENT_CLIENT 0x4 131 132 typedef int32_t di_off_t; 133 134 /* 135 * devinfo driver snapshot data structure 136 */ 137 struct di_all { 138 int version; /* snapshot version, reserved */ 139 int cache_magic; /* magic number for cached snapshot */ 140 int pd_version; /* private data format version */ 141 int endianness; /* reserved for future use */ 142 int generation; /* reserved for future use */ 143 uint32_t cache_checksum; /* snapshot checksum */ 144 uint64_t snapshot_time; /* snapshot timestamp */ 145 di_off_t top_devinfo; 146 di_off_t top_vhci_devinfo; 147 di_off_t devnames; 148 di_off_t ppdata_format; /* parent priv data format array */ 149 di_off_t dpdata_format; /* driver priv data format array */ 150 int n_ppdata; /* size of ppdata_format array */ 151 int n_dpdata; /* size of pddata_format array */ 152 int devcnt; /* size of devnames array */ 153 uint_t command; /* same as in di_init() */ 154 uint_t map_size; /* size of the snapshot */ 155 char root_path[1]; /* path to snapshot root */ 156 }; 157 158 struct di_devnm { 159 di_off_t name; 160 di_off_t global_prop; 161 di_off_t head; /* head of per instance list */ 162 int flags; /* driver attachment info */ 163 int instance; /* next instance to assign */ 164 uint_t ops; /* bit-encoded driver ops */ 165 }; 166 167 168 struct di_lnode; 169 170 struct di_link { 171 di_off_t self; 172 int count; 173 int spec_type; /* block or char access type */ 174 di_off_t src_lnode; /* src di_lnode */ 175 di_off_t tgt_lnode; /* tgt di_lnode */ 176 di_off_t src_link_next; /* next src di_link /w same di_lnode */ 177 di_off_t tgt_link_next; /* next tgt di_link /w same di_lnode */ 178 di_off_t src_node_next; /* next src di_link /w same di_node */ 179 di_off_t tgt_node_next; /* next tgt di_link /w same di_node */ 180 uint64_t user_private_data; 181 }; 182 183 struct di_lnode { 184 di_off_t self; 185 186 /* 187 * public information describing a link endpoint 188 */ 189 major_t dev_major; /* dev_t can be 64-bit */ 190 minor_t dev_minor; /* dev_t can be 64-bit */ 191 di_off_t node; /* offset of di_node */ 192 193 /* 194 * di_link ptr to links comming into this node 195 * (this lnode is the target of these di_links) 196 */ 197 di_off_t link_in; 198 199 /* 200 * di_link ptr to links going out of this node 201 * (this lnode is the source of these di_links) 202 */ 203 di_off_t link_out; 204 205 /* 206 * di_lnode pointer to the next lnode associated with the 207 * same di_node 208 */ 209 di_off_t node_next; 210 211 uint64_t user_private_data; 212 }; 213 214 struct di_node { /* useful info to export for each tree node */ 215 /* 216 * offset to di_node structures 217 */ 218 di_off_t self; /* make it self addressable */ 219 di_off_t parent; /* offset of parent node */ 220 di_off_t child; /* offset of child node */ 221 di_off_t sibling; /* offset of sibling */ 222 di_off_t next; /* next node on per-instance list */ 223 /* 224 * offset to char strings of current node 225 */ 226 di_off_t node_name; /* offset of device node name */ 227 di_off_t address; /* offset of address part of name */ 228 di_off_t bind_name; /* offset of binding name */ 229 di_off_t compat_names; /* offset of compatible names */ 230 /* 231 * offset to property lists, private data, etc. 232 */ 233 di_off_t minor_data; 234 di_off_t drv_prop; 235 di_off_t sys_prop; 236 di_off_t glob_prop; 237 di_off_t hw_prop; 238 di_off_t parent_data; 239 di_off_t driver_data; 240 di_off_t multipath_client; 241 di_off_t multipath_phci; 242 di_off_t devid; /* registered device id */ 243 di_off_t pm_info; /* RESERVED FOR FUTURE USE */ 244 /* 245 * misc values 246 */ 247 int compat_length; /* size of compatible name list */ 248 int drv_major; /* for indexing into devnames array */ 249 /* 250 * value attributes of current node 251 */ 252 int instance; /* instance number */ 253 int nodeid; /* node id */ 254 ddi_node_class_t node_class; /* node class */ 255 int attributes; /* node attributes */ 256 uint_t state; /* hotplugging device state */ 257 ddi_node_state_t node_state; /* devinfo state */ 258 259 di_off_t lnodes; /* lnodes associated with this di_node */ 260 di_off_t tgt_links; 261 di_off_t src_links; 262 263 uint32_t di_pad1; /* 4 byte padding for 32bit x86 app. */ 264 uint64_t user_private_data; 265 /* 266 * offset to link vhci/phci nodes. 267 */ 268 di_off_t next_vhci; 269 di_off_t top_phci; 270 di_off_t next_phci; 271 uint32_t multipath_component; /* stores MDI_COMPONENT_* value. */ 272 273 /* 274 * devi_flags field 275 */ 276 uint32_t flags; 277 uint32_t di_pad2; /* 4 byte padding for 32bit x86 app. */ 278 }; 279 280 /* 281 * chain of ddi_minor_data structure 282 */ 283 struct di_minor { 284 di_off_t self; /* make it self addressable */ 285 di_off_t next; /* next one in the chain */ 286 di_off_t name; /* name of node */ 287 di_off_t node_type; /* block, byte, serial, network */ 288 ddi_minor_type type; /* data type */ 289 major_t dev_major; /* dev_t can be 64-bit */ 290 minor_t dev_minor; 291 int spec_type; /* block or char */ 292 unsigned int mdclass; /* no longer used, may be removed */ 293 di_off_t node; /* address of di_node */ 294 uint64_t user_private_data; 295 }; 296 297 typedef enum { 298 DI_PATH_STATE_UNKNOWN, 299 DI_PATH_STATE_OFFLINE, 300 DI_PATH_STATE_STANDBY, 301 DI_PATH_STATE_ONLINE, 302 DI_PATH_STATE_FAULT 303 } di_path_state_t; 304 305 /* 306 * multipathing information structures 307 */ 308 struct di_path { 309 di_off_t self; /* make it self addressable */ 310 di_off_t path_c_link; /* next pathinfo via client linkage */ 311 di_off_t path_p_link; /* next pathinfo via phci linkage */ 312 di_off_t path_client; /* reference to client node */ 313 di_off_t path_phci; /* reference to phci node */ 314 di_off_t path_prop; /* property list */ 315 di_off_t path_addr; /* path addressing information */ 316 di_path_state_t path_state; /* path state */ 317 uint_t path_snap_state; /* describes valid fields */ 318 int path_instance; /* path instance */ 319 uint64_t user_private_data; 320 uint_t path_flags; /* path flags */ 321 }; 322 323 /* 324 * Flags for snap_state 325 */ 326 #define DI_PATH_SNAP_NOCLIENT 0x01 /* client endpt not in snapshot */ 327 #define DI_PATH_SNAP_NOPHCI 0x02 /* phci endpt not in snapshot */ 328 #define DI_PATH_SNAP_ENDPTS 0x04 /* Endpoints have been postprocessed */ 329 330 #define DI_PATH_SNAP_NOCLINK 0x10 /* client linkage not in snapshot */ 331 #define DI_PATH_SNAP_NOPLINK 0x20 /* phci linkage not in snapshot */ 332 #define DI_PATH_SNAP_LINKS 0x40 /* linkages have been postprocessed */ 333 334 /* 335 * Flags for path_flags 336 */ 337 #define DI_PATH_FLAGS_DEVICE_REMOVED 0x01 /* peer of DI_DEVICE_REMOVED */ 338 339 /* 340 * path properties 341 */ 342 struct di_path_prop { 343 di_off_t self; /* make it self addressable */ 344 di_off_t prop_next; /* next property linkage */ 345 di_off_t prop_name; /* property name */ 346 di_off_t prop_data; /* property data */ 347 int prop_type; /* property data type */ 348 int prop_len; /* prop length in bytes */ 349 }; 350 351 /* 352 * Now the properties. 353 */ 354 struct di_prop { 355 di_off_t self; /* make it self addressable */ 356 di_off_t next; 357 di_off_t prop_name; /* Property name */ 358 di_off_t prop_data; /* property data */ 359 major_t dev_major; /* dev_t can be 64 bit */ 360 minor_t dev_minor; 361 int prop_flags; /* mark prop value types & more */ 362 int prop_len; /* prop len in bytes (boolean if 0) */ 363 int prop_list; /* which list (DI_PROP_SYS_LIST), etc */ 364 }; 365 366 /* 367 * Private data stuff for supporting prtconf. 368 * Allows one level of indirection of fixed sized obj or obj array. 369 * The array size may be an int member of the array. 370 */ 371 372 struct di_priv_format { 373 char drv_name[MAXPATHLEN]; /* name of parent drv for ppdata */ 374 size_t bytes; /* size in bytes of this struct */ 375 struct { /* ptrs to dereference */ 376 int size; /* size of object assoc. this ptr */ 377 int offset; /* location of pointer within struct */ 378 int len_offset; /* offset to var. containing the len */ 379 } ptr[MAX_PTR_IN_PRV]; 380 }; 381 382 struct di_priv_data { 383 int version; 384 int n_parent; 385 int n_driver; 386 struct di_priv_format *parent; 387 struct di_priv_format *driver; 388 }; 389 390 /* 391 * structure passed in from ioctl 392 */ 393 struct dinfo_io { 394 char root_path[MAXPATHLEN]; 395 struct di_priv_data priv; 396 }; 397 398 #ifdef __cplusplus 399 } 400 #endif 401 402 #endif /* _SYS_DEVINFO_IMPL_H */ 403