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: src/sys/cam/cam.h,v 1.6.2.1 2000/03/17 22:36:21 peter Exp $ 29 */ 30 31 #ifndef _BUS_CAM_CAM_H_ 32 #define _BUS_CAM_CAM_H_ 1 33 34 #ifdef _KERNEL 35 #include <opt_cam.h> 36 #include <sys/sysctl.h> 37 #endif 38 39 #include <sys/cdefs.h> 40 41 typedef u_int path_id_t; 42 typedef u_int target_id_t; 43 typedef u_int lun_id_t; 44 45 #define CAM_XPT_PATH_ID ((path_id_t)~0) 46 #define CAM_BUS_WILDCARD ((path_id_t)~0) 47 #define CAM_TARGET_WILDCARD ((target_id_t)~0) 48 #define CAM_LUN_WILDCARD ((lun_id_t)~0) 49 50 /* 51 * Maximum length for a CAM CDB. 52 */ 53 #define CAM_MAX_CDBLEN 16 54 55 /* 56 * Definition of a CAM peripheral driver entry. Peripheral drivers instantiate 57 * one of these for each device they wish to communicate with and pass it into 58 * the xpt layer when they wish to schedule work on that device via the 59 * xpt_schedule API. 60 */ 61 struct cam_periph; 62 63 /* 64 * Priority information for a CAM structure. The generation number is 65 * incremented everytime a new entry is entered into the queue giving round 66 * robin per priority level scheduling. 67 */ 68 typedef struct { 69 u_int32_t priority; 70 #define CAM_PRIORITY_NONE (u_int32_t)-1 71 u_int32_t generation; 72 int index; 73 #define CAM_UNQUEUED_INDEX -1 74 #define CAM_ACTIVE_INDEX -2 75 #define CAM_DONEQ_INDEX -3 76 } cam_pinfo; 77 78 /* 79 * Macro to compare two generation numbers. It is used like this: 80 * 81 * if (GENERATIONCMP(a, >=, b)) 82 * ...; 83 * 84 * GERERATIONCMP uses modular arithmetic to guard against wraps 85 * wraps in the generation number. 86 */ 87 #define GENERATIONCMP(x, op, y) ((int32_t)((x) - (y)) op 0) 88 89 /* CAM flags XXX Move to cam_periph.h ??? */ 90 typedef enum { 91 CAM_FLAG_NONE = 0x00, 92 CAM_EXPECT_INQ_CHANGE = 0x01, 93 CAM_RETRY_SELTO = 0x02 /* Retry Selection Timeouts */ 94 } cam_flags; 95 96 /* CAM Status field values */ 97 typedef enum { 98 CAM_REQ_INPROG, /* CCB request is in progress */ 99 CAM_REQ_CMP, /* CCB request completed without error */ 100 CAM_REQ_ABORTED, /* CCB request aborted by the host */ 101 CAM_UA_ABORT, /* Unable to abort CCB request */ 102 CAM_REQ_CMP_ERR, /* CCB request completed with an error */ 103 CAM_BUSY, /* CAM subsystem is busy */ 104 CAM_REQ_INVALID, /* CCB request was invalid */ 105 CAM_PATH_INVALID, /* Supplied Path ID is invalid */ 106 CAM_DEV_NOT_THERE, /* SCSI Device Not Installed/there */ 107 CAM_UA_TERMIO, /* Unable to terminate I/O CCB request */ 108 CAM_SEL_TIMEOUT, /* Target Selection Timeout */ 109 CAM_CMD_TIMEOUT, /* Command timeout */ 110 CAM_SCSI_STATUS_ERROR, /* SCSI error, look at error code in CCB */ 111 CAM_MSG_REJECT_REC, /* Message Reject Received */ 112 CAM_SCSI_BUS_RESET, /* SCSI Bus Reset Sent/Received */ 113 CAM_UNCOR_PARITY, /* Uncorrectable parity error occurred */ 114 CAM_AUTOSENSE_FAIL = 0x10,/* Autosense: request sense cmd fail */ 115 CAM_NO_HBA, /* No HBA Detected error */ 116 CAM_DATA_RUN_ERR, /* Data Overrun error */ 117 CAM_UNEXP_BUSFREE, /* Unexpected Bus Free */ 118 CAM_SEQUENCE_FAIL, /* Target Bus Phase Sequence Failure */ 119 CAM_CCB_LEN_ERR, /* CCB length supplied is inadequate */ 120 CAM_PROVIDE_FAIL, /* Unable to provide requested capability */ 121 CAM_BDR_SENT, /* A SCSI BDR msg was sent to target */ 122 CAM_REQ_TERMIO, /* CCB request terminated by the host */ 123 CAM_UNREC_HBA_ERROR, /* Unrecoverable Host Bus Adapter Error */ 124 CAM_REQ_TOO_BIG, /* The request was too large for this host */ 125 CAM_REQUEUE_REQ, /* 126 * This request should be requeued to preserve 127 * transaction ordering. This typically occurs 128 * when the SIM recognizes an error that should 129 * freeze the queue and must place additional 130 * requests for the target at the sim level 131 * back into the XPT queue. 132 */ 133 CAM_SCSI_IT_NEXUS_LOST = 0x1d,/* Initiator/Target Nexus lost. */ 134 CAM_IDE = 0x33, /* Initiator Detected Error */ 135 CAM_RESRC_UNAVAIL, /* Resource Unavailable */ 136 CAM_UNACKED_EVENT, /* Unacknowledged Event by Host */ 137 CAM_MESSAGE_RECV, /* Message Received in Host Target Mode */ 138 CAM_INVALID_CDB, /* Invalid CDB received in Host Target Mode */ 139 CAM_LUN_INVALID, /* Lun supplied is invalid */ 140 CAM_TID_INVALID, /* Target ID supplied is invalid */ 141 CAM_FUNC_NOTAVAIL, /* The requested function is not available */ 142 CAM_NO_NEXUS, /* Nexus is not established */ 143 CAM_IID_INVALID, /* The initiator ID is invalid */ 144 CAM_CDB_RECVD, /* The SCSI CDB has been received */ 145 CAM_LUN_ALRDY_ENA, /* The LUN is already enabled for target mode */ 146 CAM_SCSI_BUSY, /* SCSI Bus Busy */ 147 148 CAM_DEV_QFRZN = 0x40, /* The DEV queue is frozen w/this err */ 149 150 /* Autosense data valid for target */ 151 CAM_AUTOSNS_VALID = 0x80, 152 CAM_RELEASE_SIMQ = 0x100,/* SIM ready to take more commands */ 153 CAM_SIM_QUEUED = 0x200,/* SIM has this command in it's queue */ 154 155 CAM_STATUS_MASK = 0x3F, /* Mask bits for just the status # */ 156 157 /* Target Specific Adjunct Status */ 158 CAM_SENT_SENSE = 0x40000000 /* sent sense with status */ 159 } cam_status; 160 161 typedef enum { 162 CAM_ESF_NONE = 0x00, 163 CAM_ESF_COMMAND = 0x01, 164 CAM_ESF_CAM_STATUS = 0x02, 165 CAM_ESF_PROTO_STATUS = 0x04, 166 CAM_ESF_ALL = 0xff 167 } cam_error_string_flags; 168 169 typedef enum { 170 CAM_EPF_NONE = 0x00, 171 CAM_EPF_MINIMAL = 0x01, 172 CAM_EPF_NORMAL = 0x02, 173 CAM_EPF_ALL = 0x03, 174 CAM_EPF_LEVEL_MASK = 0x0f 175 /* All bits above bit 3 are protocol-specific */ 176 } cam_error_proto_flags; 177 178 typedef enum { 179 CAM_ESF_PRINT_NONE = 0x00, 180 CAM_ESF_PRINT_STATUS = 0x10, 181 CAM_ESF_PRINT_SENSE = 0x20 182 } cam_error_scsi_flags; 183 184 struct cam_status_entry 185 { 186 cam_status status_code; 187 const char *status_text; 188 }; 189 190 extern const struct cam_status_entry cam_status_table[]; 191 extern const int num_cam_status_entries; 192 union ccb; 193 194 __BEGIN_DECLS 195 typedef int (cam_quirkmatch_t)(caddr_t, caddr_t); 196 197 caddr_t cam_quirkmatch(caddr_t target, caddr_t quirk_table, int num_entries, 198 int entry_size, cam_quirkmatch_t *comp_func); 199 200 void cam_strvis(u_int8_t *dst, const u_int8_t *src, int srclen, int dstlen); 201 202 int cam_strmatch(const u_int8_t *str, const u_int8_t *pattern, int str_len); 203 const struct cam_status_entry* 204 cam_fetch_status_entry(cam_status status); 205 #ifdef _KERNEL 206 char * cam_error_string(union ccb *ccb, char *str, int str_len, 207 cam_error_string_flags flags, 208 cam_error_proto_flags proto_flags); 209 void cam_error_print(union ccb *ccb, cam_error_string_flags flags, 210 cam_error_proto_flags proto_flags); 211 #else /* _KERNEL */ 212 struct cam_device; 213 214 char * cam_error_string(struct cam_device *device, union ccb *ccb, char *str, 215 int str_len, cam_error_string_flags flags, 216 cam_error_proto_flags proto_flags); 217 void cam_error_print(struct cam_device *device, union ccb *ccb, 218 cam_error_string_flags flags, 219 cam_error_proto_flags proto_flags, FILE *ofile); 220 #endif /* _KERNEL */ 221 __END_DECLS 222 223 #ifdef _KERNEL 224 225 SYSCTL_DECL(_kern_cam); 226 227 static __inline void cam_init_pinfo(cam_pinfo *pinfo); 228 229 static __inline void 230 cam_init_pinfo(cam_pinfo *pinfo) 231 { 232 pinfo->priority = CAM_PRIORITY_NONE; 233 pinfo->index = CAM_UNQUEUED_INDEX; 234 } 235 #endif 236 237 #endif /* !_BUS_CAM_CAM_H_ */ 238