1 /*- 2 * Data structures and definitions for the CAM system. 3 * 4 * SPDX-License-Identifier: BSD-2-Clause-FreeBSD 5 * 6 * Copyright (c) 1997 Justin T. Gibbs. 7 * All rights reserved. 8 * 9 * Redistribution and use in source and binary forms, with or without 10 * modification, are permitted provided that the following conditions 11 * are met: 12 * 1. Redistributions of source code must retain the above copyright 13 * notice, this list of conditions, and the following disclaimer, 14 * without modification, immediately at the beginning of the file. 15 * 2. The name of the author may not be used to endorse or promote products 16 * derived from this software without specific prior written permission. 17 * 18 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND 19 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 20 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 21 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE FOR 22 * ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 23 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 24 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 25 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 26 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 27 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 28 * SUCH DAMAGE. 29 * 30 * $FreeBSD$ 31 */ 32 33 #ifndef _CAM_CAM_H 34 #define _CAM_CAM_H 1 35 36 #ifdef _KERNEL 37 #include "opt_cam.h" 38 #endif 39 40 #include <sys/cdefs.h> 41 #ifndef _KERNEL 42 #include <stdbool.h> 43 #endif 44 45 typedef u_int path_id_t; 46 typedef u_int target_id_t; 47 typedef u_int64_t lun_id_t; 48 49 #define CAM_XPT_PATH_ID ((path_id_t)~0) 50 #define CAM_BUS_WILDCARD ((path_id_t)~0) 51 #define CAM_TARGET_WILDCARD ((target_id_t)~0) 52 #define CAM_LUN_WILDCARD (~(u_int)0) 53 54 #define CAM_EXTLUN_BYTE_SWIZZLE(lun) ( \ 55 ((((u_int64_t)lun) & 0xffff000000000000L) >> 48) | \ 56 ((((u_int64_t)lun) & 0x0000ffff00000000L) >> 16) | \ 57 ((((u_int64_t)lun) & 0x00000000ffff0000L) << 16) | \ 58 ((((u_int64_t)lun) & 0x000000000000ffffL) << 48)) 59 60 /* 61 * Maximum length for a CAM CDB. 62 */ 63 #define CAM_MAX_CDBLEN 16 64 65 /* 66 * Definition of a CAM peripheral driver entry. Peripheral drivers instantiate 67 * one of these for each device they wish to communicate with and pass it into 68 * the xpt layer when they wish to schedule work on that device via the 69 * xpt_schedule API. 70 */ 71 struct cam_periph; 72 73 /* 74 * Priority information for a CAM structure. 75 */ 76 typedef enum { 77 CAM_RL_HOST, 78 CAM_RL_BUS, 79 CAM_RL_XPT, 80 CAM_RL_DEV, 81 CAM_RL_NORMAL, 82 CAM_RL_VALUES 83 } cam_rl; 84 /* 85 * The generation number is incremented every time a new entry is entered into 86 * the queue giving round robin per priority level scheduling. 87 */ 88 typedef struct { 89 u_int32_t priority; 90 #define CAM_PRIORITY_HOST ((CAM_RL_HOST << 8) + 0x80) 91 #define CAM_PRIORITY_BUS ((CAM_RL_BUS << 8) + 0x80) 92 #define CAM_PRIORITY_XPT ((CAM_RL_XPT << 8) + 0x80) 93 #define CAM_PRIORITY_DEV ((CAM_RL_DEV << 8) + 0x80) 94 #define CAM_PRIORITY_OOB (CAM_RL_DEV << 8) 95 #define CAM_PRIORITY_NORMAL ((CAM_RL_NORMAL << 8) + 0x80) 96 #define CAM_PRIORITY_NONE (u_int32_t)-1 97 u_int32_t generation; 98 int index; 99 #define CAM_UNQUEUED_INDEX -1 100 #define CAM_ACTIVE_INDEX -2 101 #define CAM_DONEQ_INDEX -3 102 #define CAM_ASYNC_INDEX -4 103 #define CAM_EXTRAQ_INDEX INT_MAX 104 } cam_pinfo; 105 106 /* 107 * Macro to compare two generation numbers. It is used like this: 108 * 109 * if (GENERATIONCMP(a, >=, b)) 110 * ...; 111 * 112 * GERERATIONCMP uses modular arithmetic to guard against wraps 113 * wraps in the generation number. 114 */ 115 #define GENERATIONCMP(x, op, y) ((int32_t)((x) - (y)) op 0) 116 117 /* CAM flags XXX Move to cam_periph.h ??? */ 118 typedef enum { 119 CAM_FLAG_NONE = 0x00, 120 CAM_EXPECT_INQ_CHANGE = 0x01, 121 CAM_RETRY_SELTO = 0x02 /* Retry Selection Timeouts */ 122 } cam_flags; 123 124 enum { 125 SF_RETRY_UA = 0x01, /* Retry UNIT ATTENTION conditions. */ 126 SF_NO_PRINT = 0x02, /* Never print error status. */ 127 SF_QUIET_IR = 0x04, /* Be quiet about Illegal Request responses */ 128 SF_PRINT_ALWAYS = 0x08, /* Always print error status. */ 129 SF_NO_RECOVERY = 0x10, /* Don't do active error recovery. */ 130 SF_NO_RETRY = 0x20, /* Don't do any retries. */ 131 SF_RETRY_BUSY = 0x40 /* Retry BUSY status. */ 132 }; 133 134 /* CAM Status field values */ 135 typedef enum { 136 /* CCB request is in progress */ 137 CAM_REQ_INPROG = 0x00, 138 139 /* CCB request completed without error */ 140 CAM_REQ_CMP = 0x01, 141 142 /* CCB request aborted by the host */ 143 CAM_REQ_ABORTED = 0x02, 144 145 /* Unable to abort CCB request */ 146 CAM_UA_ABORT = 0x03, 147 148 /* CCB request completed with an error */ 149 CAM_REQ_CMP_ERR = 0x04, 150 151 /* CAM subsystem is busy */ 152 CAM_BUSY = 0x05, 153 154 /* CCB request was invalid */ 155 CAM_REQ_INVALID = 0x06, 156 157 /* Supplied Path ID is invalid */ 158 CAM_PATH_INVALID = 0x07, 159 160 /* SCSI Device Not Installed/there */ 161 CAM_DEV_NOT_THERE = 0x08, 162 163 /* Unable to terminate I/O CCB request */ 164 CAM_UA_TERMIO = 0x09, 165 166 /* Target Selection Timeout */ 167 CAM_SEL_TIMEOUT = 0x0a, 168 169 /* Command timeout */ 170 CAM_CMD_TIMEOUT = 0x0b, 171 172 /* SCSI error, look at error code in CCB */ 173 CAM_SCSI_STATUS_ERROR = 0x0c, 174 175 /* Message Reject Received */ 176 CAM_MSG_REJECT_REC = 0x0d, 177 178 /* SCSI Bus Reset Sent/Received */ 179 CAM_SCSI_BUS_RESET = 0x0e, 180 181 /* Uncorrectable parity error occurred */ 182 CAM_UNCOR_PARITY = 0x0f, 183 184 /* Autosense: request sense cmd fail */ 185 CAM_AUTOSENSE_FAIL = 0x10, 186 187 /* No HBA Detected error */ 188 CAM_NO_HBA = 0x11, 189 190 /* Data Overrun error */ 191 CAM_DATA_RUN_ERR = 0x12, 192 193 /* Unexpected Bus Free */ 194 CAM_UNEXP_BUSFREE = 0x13, 195 196 /* Target Bus Phase Sequence Failure */ 197 CAM_SEQUENCE_FAIL = 0x14, 198 199 /* CCB length supplied is inadequate */ 200 CAM_CCB_LEN_ERR = 0x15, 201 202 /* Unable to provide requested capability*/ 203 CAM_PROVIDE_FAIL = 0x16, 204 205 /* A SCSI BDR msg was sent to target */ 206 CAM_BDR_SENT = 0x17, 207 208 /* CCB request terminated by the host */ 209 CAM_REQ_TERMIO = 0x18, 210 211 /* Unrecoverable Host Bus Adapter Error */ 212 CAM_UNREC_HBA_ERROR = 0x19, 213 214 /* Request was too large for this host */ 215 CAM_REQ_TOO_BIG = 0x1a, 216 217 /* 218 * This request should be requeued to preserve 219 * transaction ordering. This typically occurs 220 * when the SIM recognizes an error that should 221 * freeze the queue and must place additional 222 * requests for the target at the sim level 223 * back into the XPT queue. 224 */ 225 CAM_REQUEUE_REQ = 0x1b, 226 227 /* ATA error, look at error code in CCB */ 228 CAM_ATA_STATUS_ERROR = 0x1c, 229 230 /* Initiator/Target Nexus lost. */ 231 CAM_SCSI_IT_NEXUS_LOST = 0x1d, 232 233 /* SMP error, look at error code in CCB */ 234 CAM_SMP_STATUS_ERROR = 0x1e, 235 236 /* 237 * Command completed without error but exceeded the soft 238 * timeout threshold. 239 */ 240 CAM_REQ_SOFTTIMEOUT = 0x1f, 241 242 /* 243 * 0x20 - 0x32 are unassigned 244 */ 245 246 /* Initiator Detected Error */ 247 CAM_IDE = 0x33, 248 249 /* Resource Unavailable */ 250 CAM_RESRC_UNAVAIL = 0x34, 251 252 /* Unacknowledged Event by Host */ 253 CAM_UNACKED_EVENT = 0x35, 254 255 /* Message Received in Host Target Mode */ 256 CAM_MESSAGE_RECV = 0x36, 257 258 /* Invalid CDB received in Host Target Mode */ 259 CAM_INVALID_CDB = 0x37, 260 261 /* Lun supplied is invalid */ 262 CAM_LUN_INVALID = 0x38, 263 264 /* Target ID supplied is invalid */ 265 CAM_TID_INVALID = 0x39, 266 267 /* The requested function is not available */ 268 CAM_FUNC_NOTAVAIL = 0x3a, 269 270 /* Nexus is not established */ 271 CAM_NO_NEXUS = 0x3b, 272 273 /* The initiator ID is invalid */ 274 CAM_IID_INVALID = 0x3c, 275 276 /* The SCSI CDB has been received */ 277 CAM_CDB_RECVD = 0x3d, 278 279 /* The LUN is already enabled for target mode */ 280 CAM_LUN_ALRDY_ENA = 0x3e, 281 282 /* SCSI Bus Busy */ 283 CAM_SCSI_BUSY = 0x3f, 284 285 /* 286 * Flags 287 */ 288 289 /* The DEV queue is frozen w/this err */ 290 CAM_DEV_QFRZN = 0x40, 291 292 /* Autosense data valid for target */ 293 CAM_AUTOSNS_VALID = 0x80, 294 295 /* SIM ready to take more commands */ 296 CAM_RELEASE_SIMQ = 0x100, 297 298 /* SIM has this command in its queue */ 299 CAM_SIM_QUEUED = 0x200, 300 301 /* Quality of service data is valid */ 302 CAM_QOS_VALID = 0x400, 303 304 /* Mask bits for just the status # */ 305 CAM_STATUS_MASK = 0x3F, 306 307 /* 308 * Target Specific Adjunct Status 309 */ 310 311 /* sent sense with status */ 312 CAM_SENT_SENSE = 0x40000000 313 } cam_status; 314 315 typedef enum { 316 CAM_ESF_NONE = 0x00, 317 CAM_ESF_COMMAND = 0x01, 318 CAM_ESF_CAM_STATUS = 0x02, 319 CAM_ESF_PROTO_STATUS = 0x04, 320 CAM_ESF_ALL = 0xff 321 } cam_error_string_flags; 322 323 typedef enum { 324 CAM_EPF_NONE = 0x00, 325 CAM_EPF_MINIMAL = 0x01, 326 CAM_EPF_NORMAL = 0x02, 327 CAM_EPF_ALL = 0x03, 328 CAM_EPF_LEVEL_MASK = 0x0f 329 /* All bits above bit 3 are protocol-specific */ 330 } cam_error_proto_flags; 331 332 typedef enum { 333 CAM_ESF_PRINT_NONE = 0x00, 334 CAM_ESF_PRINT_STATUS = 0x10, 335 CAM_ESF_PRINT_SENSE = 0x20 336 } cam_error_scsi_flags; 337 338 typedef enum { 339 CAM_ESMF_PRINT_NONE = 0x00, 340 CAM_ESMF_PRINT_STATUS = 0x10, 341 CAM_ESMF_PRINT_FULL_CMD = 0x20, 342 } cam_error_smp_flags; 343 344 typedef enum { 345 CAM_EAF_PRINT_NONE = 0x00, 346 CAM_EAF_PRINT_STATUS = 0x10, 347 CAM_EAF_PRINT_RESULT = 0x20 348 } cam_error_ata_flags; 349 350 typedef enum { 351 CAM_STRVIS_FLAG_NONE = 0x00, 352 CAM_STRVIS_FLAG_NONASCII_MASK = 0x03, 353 CAM_STRVIS_FLAG_NONASCII_TRIM = 0x00, 354 CAM_STRVIS_FLAG_NONASCII_RAW = 0x01, 355 CAM_STRVIS_FLAG_NONASCII_SPC = 0x02, 356 CAM_STRVIS_FLAG_NONASCII_ESC = 0x03 357 } cam_strvis_flags; 358 359 struct cam_status_entry 360 { 361 cam_status status_code; 362 const char *status_text; 363 }; 364 365 extern const struct cam_status_entry cam_status_table[]; 366 extern const int num_cam_status_entries; 367 #ifdef _KERNEL 368 extern int cam_sort_io_queues; 369 #endif 370 union ccb; 371 struct sbuf; 372 373 #ifdef SYSCTL_DECL /* from sysctl.h */ 374 SYSCTL_DECL(_kern_cam); 375 #endif 376 377 __BEGIN_DECLS 378 typedef int (cam_quirkmatch_t)(caddr_t, caddr_t); 379 380 caddr_t cam_quirkmatch(caddr_t target, caddr_t quirk_table, int num_entries, 381 int entry_size, cam_quirkmatch_t *comp_func); 382 383 void cam_strvis(u_int8_t *dst, const u_int8_t *src, int srclen, int dstlen); 384 void cam_strvis_flag(u_int8_t *dst, const u_int8_t *src, int srclen, 385 int dstlen, uint32_t flags); 386 void cam_strvis_sbuf(struct sbuf *sb, const u_int8_t *src, int srclen, 387 uint32_t flags); 388 389 int cam_strmatch(const u_int8_t *str, const u_int8_t *pattern, int str_len); 390 const struct cam_status_entry* 391 cam_fetch_status_entry(cam_status status); 392 #ifdef _KERNEL 393 char * cam_error_string(union ccb *ccb, char *str, int str_len, 394 cam_error_string_flags flags, 395 cam_error_proto_flags proto_flags); 396 void cam_error_print(union ccb *ccb, cam_error_string_flags flags, 397 cam_error_proto_flags proto_flags); 398 #else /* _KERNEL */ 399 struct cam_device; 400 401 char * cam_error_string(struct cam_device *device, union ccb *ccb, char *str, 402 int str_len, cam_error_string_flags flags, 403 cam_error_proto_flags proto_flags); 404 void cam_error_print(struct cam_device *device, union ccb *ccb, 405 cam_error_string_flags flags, 406 cam_error_proto_flags proto_flags, FILE *ofile); 407 #endif /* _KERNEL */ 408 __END_DECLS 409 410 #ifdef _KERNEL 411 static __inline void cam_init_pinfo(cam_pinfo *pinfo) 412 { 413 pinfo->priority = CAM_PRIORITY_NONE; 414 pinfo->index = CAM_UNQUEUED_INDEX; 415 } 416 #endif 417 418 #endif /* _CAM_CAM_H */ 419