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 40typedef u_int path_id_t; 41typedef u_int target_id_t; 42typedef u_int 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 ((lun_id_t)~0) 48 49/* 50 * Maximum length for a CAM CDB. 51 */ 52#define CAM_MAX_CDBLEN 16 53 54/* 55 * Definition of a CAM peripheral driver entry. Peripheral drivers instantiate 56 * one of these for each device they wish to communicate with and pass it into 57 * the xpt layer when they wish to schedule work on that device via the 58 * xpt_schedule API. 59 */ 60struct cam_periph; 61 62/* 63 * Priority information for a CAM structure. 64 */ 65typedef enum { 66 CAM_RL_HOST, 67 CAM_RL_BUS, 68 CAM_RL_XPT, 69 CAM_RL_DEV, 70 CAM_RL_NORMAL, 71 CAM_RL_VALUES 72} cam_rl; 73/* 74 * The generation number is incremented everytime a new entry is entered into 75 * the queue giving round robin per priority level scheduling. 76 */ 77typedef struct { 78 u_int32_t priority; 79#define CAM_PRIORITY_HOST ((CAM_RL_HOST << 8) + 0x80) 80#define CAM_PRIORITY_BUS ((CAM_RL_BUS << 8) + 0x80) 81#define CAM_PRIORITY_XPT ((CAM_RL_XPT << 8) + 0x80) 82#define CAM_PRIORITY_DEV ((CAM_RL_DEV << 8) + 0x80) 83#define CAM_PRIORITY_OOB (CAM_RL_DEV << 8) 84#define CAM_PRIORITY_NORMAL ((CAM_RL_NORMAL << 8) + 0x80) 85#define CAM_PRIORITY_NONE (u_int32_t)-1 86 u_int32_t generation; 87 int index; 88#define CAM_UNQUEUED_INDEX -1 89#define CAM_ACTIVE_INDEX -2 90#define CAM_DONEQ_INDEX -3 91#define CAM_EXTRAQ_INDEX INT_MAX 92} cam_pinfo; 93 94/* 95 * Macro to compare two generation numbers. It is used like this: 96 * 97 * if (GENERATIONCMP(a, >=, b)) 98 * ...; 99 * 100 * GERERATIONCMP uses modular arithmetic to guard against wraps 101 * wraps in the generation number. 102 */ 103#define GENERATIONCMP(x, op, y) ((int32_t)((x) - (y)) op 0) 104 105/* CAM flags XXX Move to cam_periph.h ??? */ 106typedef enum { 107 CAM_FLAG_NONE = 0x00, 108 CAM_EXPECT_INQ_CHANGE = 0x01, 109 CAM_RETRY_SELTO = 0x02 /* Retry Selection Timeouts */ 110} cam_flags; 111 112enum { 113 SF_RETRY_UA = 0x01, /* Retry UNIT ATTENTION conditions. */ 114 SF_NO_PRINT = 0x02, /* Never print error status. */ 115 SF_QUIET_IR = 0x04, /* Be quiet about Illegal Request reponses */ 116 SF_PRINT_ALWAYS = 0x08, /* Always print error status. */ 117 SF_NO_RECOVERY = 0x10, /* Don't do active error recovery. */ 118 SF_NO_RETRY = 0x20 /* Don't do any retries. */ 119}; 120 121/* CAM Status field values */ 122typedef enum { 123 CAM_REQ_INPROG, /* CCB request is in progress */ 124 CAM_REQ_CMP, /* CCB request completed without error */ 125 CAM_REQ_ABORTED, /* CCB request aborted by the host */ 126 CAM_UA_ABORT, /* Unable to abort CCB request */ 127 CAM_REQ_CMP_ERR, /* CCB request completed with an error */ 128 CAM_BUSY, /* CAM subsystem is busy */ 129 CAM_REQ_INVALID, /* CCB request was invalid */ 130 CAM_PATH_INVALID, /* Supplied Path ID is invalid */ 131 CAM_DEV_NOT_THERE, /* SCSI Device Not Installed/there */ 132 CAM_UA_TERMIO, /* Unable to terminate I/O CCB request */ 133 CAM_SEL_TIMEOUT, /* Target Selection Timeout */ 134 CAM_CMD_TIMEOUT, /* Command timeout */ 135 CAM_SCSI_STATUS_ERROR, /* SCSI error, look at error code in CCB */ 136 CAM_MSG_REJECT_REC, /* Message Reject Received */ 137 CAM_SCSI_BUS_RESET, /* SCSI Bus Reset Sent/Received */ 138 CAM_UNCOR_PARITY, /* Uncorrectable parity error occurred */ 139 CAM_AUTOSENSE_FAIL = 0x10,/* Autosense: request sense cmd fail */ 140 CAM_NO_HBA, /* No HBA Detected error */ 141 CAM_DATA_RUN_ERR, /* Data Overrun error */ 142 CAM_UNEXP_BUSFREE, /* Unexpected Bus Free */ 143 CAM_SEQUENCE_FAIL, /* Target Bus Phase Sequence Failure */ 144 CAM_CCB_LEN_ERR, /* CCB length supplied is inadequate */ 145 CAM_PROVIDE_FAIL, /* Unable to provide requested capability */ 146 CAM_BDR_SENT, /* A SCSI BDR msg was sent to target */ 147 CAM_REQ_TERMIO, /* CCB request terminated by the host */ 148 CAM_UNREC_HBA_ERROR, /* Unrecoverable Host Bus Adapter Error */ 149 CAM_REQ_TOO_BIG, /* The request was too large for this host */ 150 CAM_REQUEUE_REQ, /* 151 * This request should be requeued to preserve 152 * transaction ordering. This typically occurs 153 * when the SIM recognizes an error that should 154 * freeze the queue and must place additional 155 * requests for the target at the sim level 156 * back into the XPT queue. 157 */ 158 CAM_ATA_STATUS_ERROR, /* ATA error, look at error code in CCB */ 159 CAM_SCSI_IT_NEXUS_LOST, /* Initiator/Target Nexus lost. */ 160 CAM_SMP_STATUS_ERROR, /* SMP error, look at error code in CCB */ 161 CAM_IDE = 0x33, /* Initiator Detected Error */ 162 CAM_RESRC_UNAVAIL, /* Resource Unavailable */ 163 CAM_UNACKED_EVENT, /* Unacknowledged Event by Host */ 164 CAM_MESSAGE_RECV, /* Message Received in Host Target Mode */ 165 CAM_INVALID_CDB, /* Invalid CDB received in Host Target Mode */ 166 CAM_LUN_INVALID, /* Lun supplied is invalid */ 167 CAM_TID_INVALID, /* Target ID supplied is invalid */ 168 CAM_FUNC_NOTAVAIL, /* The requested function is not available */ 169 CAM_NO_NEXUS, /* Nexus is not established */ 170 CAM_IID_INVALID, /* The initiator ID is invalid */ 171 CAM_CDB_RECVD, /* The SCSI CDB has been received */ 172 CAM_LUN_ALRDY_ENA, /* The LUN is already enabled for target mode */ 173 CAM_SCSI_BUSY, /* SCSI Bus Busy */ 174 175 CAM_DEV_QFRZN = 0x40, /* The DEV queue is frozen w/this err */ 176 177 /* Autosense data valid for target */ 178 CAM_AUTOSNS_VALID = 0x80, 179 CAM_RELEASE_SIMQ = 0x100,/* SIM ready to take more commands */ 180 CAM_SIM_QUEUED = 0x200,/* SIM has this command in it's queue */ 181 182 CAM_STATUS_MASK = 0x3F, /* Mask bits for just the status # */ 183 184 /* Target Specific Adjunct Status */ 185 CAM_SENT_SENSE = 0x40000000 /* sent sense with status */ 186} cam_status; 187 188typedef enum { 189 CAM_ESF_NONE = 0x00, 190 CAM_ESF_COMMAND = 0x01, 191 CAM_ESF_CAM_STATUS = 0x02, 192 CAM_ESF_PROTO_STATUS = 0x04, 193 CAM_ESF_ALL = 0xff 194} cam_error_string_flags; 195 196typedef enum { 197 CAM_EPF_NONE = 0x00, 198 CAM_EPF_MINIMAL = 0x01, 199 CAM_EPF_NORMAL = 0x02, 200 CAM_EPF_ALL = 0x03, 201 CAM_EPF_LEVEL_MASK = 0x0f 202 /* All bits above bit 3 are protocol-specific */ 203} cam_error_proto_flags; 204 205typedef enum { 206 CAM_ESF_PRINT_NONE = 0x00, 207 CAM_ESF_PRINT_STATUS = 0x10, 208 CAM_ESF_PRINT_SENSE = 0x20 209} cam_error_scsi_flags; 210 211typedef enum { 212 CAM_ESMF_PRINT_NONE = 0x00, 213 CAM_ESMF_PRINT_STATUS = 0x10, 214 CAM_ESMF_PRINT_FULL_CMD = 0x20, 215} cam_error_smp_flags; 216 217typedef enum { 218 CAM_EAF_PRINT_NONE = 0x00, 219 CAM_EAF_PRINT_STATUS = 0x10, 220 CAM_EAF_PRINT_RESULT = 0x20 221} cam_error_ata_flags; 222 223struct cam_status_entry 224{ 225 cam_status status_code; 226 const char *status_text; 227}; 228 229extern const struct cam_status_entry cam_status_table[]; 230extern const int num_cam_status_entries; 231#ifdef _KERNEL 232extern int cam_sort_io_queues; 233#endif 234union ccb; 235 236#ifdef SYSCTL_DECL /* from sysctl.h */ 237SYSCTL_DECL(_kern_cam); 238#endif 239 240__BEGIN_DECLS 241typedef int (cam_quirkmatch_t)(caddr_t, caddr_t); 242 243caddr_t cam_quirkmatch(caddr_t target, caddr_t quirk_table, int num_entries, 244 int entry_size, cam_quirkmatch_t *comp_func); 245 246void cam_strvis(u_int8_t *dst, const u_int8_t *src, int srclen, int dstlen); 247 248int cam_strmatch(const u_int8_t *str, const u_int8_t *pattern, int str_len); 249const struct cam_status_entry* 250 cam_fetch_status_entry(cam_status status); 251#ifdef _KERNEL 252char * cam_error_string(union ccb *ccb, char *str, int str_len, 253 cam_error_string_flags flags, 254 cam_error_proto_flags proto_flags); 255void cam_error_print(union ccb *ccb, cam_error_string_flags flags, 256 cam_error_proto_flags proto_flags); 257#else /* _KERNEL */ 258struct cam_device; 259 260char * cam_error_string(struct cam_device *device, union ccb *ccb, char *str, 261 int str_len, cam_error_string_flags flags, 262 cam_error_proto_flags proto_flags); 263void cam_error_print(struct cam_device *device, union ccb *ccb, 264 cam_error_string_flags flags, 265 cam_error_proto_flags proto_flags, FILE *ofile); 266#endif /* _KERNEL */ 267__END_DECLS 268 269#ifdef _KERNEL 270static __inline void cam_init_pinfo(cam_pinfo *pinfo); 271 272static __inline void cam_init_pinfo(cam_pinfo *pinfo) 273{ 274 pinfo->priority = CAM_PRIORITY_NONE; 275 pinfo->index = CAM_UNQUEUED_INDEX; 276} 277#endif 278 279#endif /* _CAM_CAM_H */ 280