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