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_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 */ 60 struct cam_periph; 61 62 /* 63 * Priority information for a CAM structure. 64 */ 65 typedef 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 */ 77 typedef 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_NORMAL ((CAM_RL_NORMAL << 8) + 0x80) 84 #define CAM_PRIORITY_NONE (u_int32_t)-1 85 #define CAM_PRIORITY_TO_RL(x) ((x) >> 8) 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 } cam_pinfo; 92 93 /* 94 * Macro to compare two generation numbers. It is used like this: 95 * 96 * if (GENERATIONCMP(a, >=, b)) 97 * ...; 98 * 99 * GERERATIONCMP uses modular arithmetic to guard against wraps 100 * wraps in the generation number. 101 */ 102 #define GENERATIONCMP(x, op, y) ((int32_t)((x) - (y)) op 0) 103 104 /* CAM flags XXX Move to cam_periph.h ??? */ 105 typedef enum { 106 CAM_FLAG_NONE = 0x00, 107 CAM_EXPECT_INQ_CHANGE = 0x01, 108 CAM_RETRY_SELTO = 0x02 /* Retry Selection Timeouts */ 109 } cam_flags; 110 111 /* CAM Status field values */ 112 typedef enum { 113 CAM_REQ_INPROG, /* CCB request is in progress */ 114 CAM_REQ_CMP, /* CCB request completed without error */ 115 CAM_REQ_ABORTED, /* CCB request aborted by the host */ 116 CAM_UA_ABORT, /* Unable to abort CCB request */ 117 CAM_REQ_CMP_ERR, /* CCB request completed with an error */ 118 CAM_BUSY, /* CAM subsystem is busy */ 119 CAM_REQ_INVALID, /* CCB request was invalid */ 120 CAM_PATH_INVALID, /* Supplied Path ID is invalid */ 121 CAM_DEV_NOT_THERE, /* SCSI Device Not Installed/there */ 122 CAM_UA_TERMIO, /* Unable to terminate I/O CCB request */ 123 CAM_SEL_TIMEOUT, /* Target Selection Timeout */ 124 CAM_CMD_TIMEOUT, /* Command timeout */ 125 CAM_SCSI_STATUS_ERROR, /* SCSI error, look at error code in CCB */ 126 CAM_MSG_REJECT_REC, /* Message Reject Received */ 127 CAM_SCSI_BUS_RESET, /* SCSI Bus Reset Sent/Received */ 128 CAM_UNCOR_PARITY, /* Uncorrectable parity error occurred */ 129 CAM_AUTOSENSE_FAIL = 0x10,/* Autosense: request sense cmd fail */ 130 CAM_NO_HBA, /* No HBA Detected error */ 131 CAM_DATA_RUN_ERR, /* Data Overrun error */ 132 CAM_UNEXP_BUSFREE, /* Unexpected Bus Free */ 133 CAM_SEQUENCE_FAIL, /* Target Bus Phase Sequence Failure */ 134 CAM_CCB_LEN_ERR, /* CCB length supplied is inadequate */ 135 CAM_PROVIDE_FAIL, /* Unable to provide requested capability */ 136 CAM_BDR_SENT, /* A SCSI BDR msg was sent to target */ 137 CAM_REQ_TERMIO, /* CCB request terminated by the host */ 138 CAM_UNREC_HBA_ERROR, /* Unrecoverable Host Bus Adapter Error */ 139 CAM_REQ_TOO_BIG, /* The request was too large for this host */ 140 CAM_REQUEUE_REQ, /* 141 * This request should be requeued to preserve 142 * transaction ordering. This typically occurs 143 * when the SIM recognizes an error that should 144 * freeze the queue and must place additional 145 * requests for the target at the sim level 146 * back into the XPT queue. 147 */ 148 CAM_ATA_STATUS_ERROR, /* ATA error, look at error code in CCB */ 149 CAM_SCSI_IT_NEXUS_LOST, /* Initiator/Target Nexus lost. */ 150 CAM_SMP_STATUS_ERROR, /* SMP error, look at error code in CCB */ 151 CAM_IDE = 0x33, /* Initiator Detected Error */ 152 CAM_RESRC_UNAVAIL, /* Resource Unavailable */ 153 CAM_UNACKED_EVENT, /* Unacknowledged Event by Host */ 154 CAM_MESSAGE_RECV, /* Message Received in Host Target Mode */ 155 CAM_INVALID_CDB, /* Invalid CDB received in Host Target Mode */ 156 CAM_LUN_INVALID, /* Lun supplied is invalid */ 157 CAM_TID_INVALID, /* Target ID supplied is invalid */ 158 CAM_FUNC_NOTAVAIL, /* The requested function is not available */ 159 CAM_NO_NEXUS, /* Nexus is not established */ 160 CAM_IID_INVALID, /* The initiator ID is invalid */ 161 CAM_CDB_RECVD, /* The SCSI CDB has been received */ 162 CAM_LUN_ALRDY_ENA, /* The LUN is already enabled for target mode */ 163 CAM_SCSI_BUSY, /* SCSI Bus Busy */ 164 165 CAM_DEV_QFRZN = 0x40, /* The DEV queue is frozen w/this err */ 166 167 /* Autosense data valid for target */ 168 CAM_AUTOSNS_VALID = 0x80, 169 CAM_RELEASE_SIMQ = 0x100,/* SIM ready to take more commands */ 170 CAM_SIM_QUEUED = 0x200,/* SIM has this command in it's queue */ 171 172 CAM_STATUS_MASK = 0x3F, /* Mask bits for just the status # */ 173 174 /* Target Specific Adjunct Status */ 175 CAM_SENT_SENSE = 0x40000000 /* sent sense with status */ 176 } cam_status; 177 178 typedef enum { 179 CAM_ESF_NONE = 0x00, 180 CAM_ESF_COMMAND = 0x01, 181 CAM_ESF_CAM_STATUS = 0x02, 182 CAM_ESF_PROTO_STATUS = 0x04, 183 CAM_ESF_ALL = 0xff 184 } cam_error_string_flags; 185 186 typedef enum { 187 CAM_EPF_NONE = 0x00, 188 CAM_EPF_MINIMAL = 0x01, 189 CAM_EPF_NORMAL = 0x02, 190 CAM_EPF_ALL = 0x03, 191 CAM_EPF_LEVEL_MASK = 0x0f 192 /* All bits above bit 3 are protocol-specific */ 193 } cam_error_proto_flags; 194 195 typedef enum { 196 CAM_ESF_PRINT_NONE = 0x00, 197 CAM_ESF_PRINT_STATUS = 0x10, 198 CAM_ESF_PRINT_SENSE = 0x20 199 } cam_error_scsi_flags; 200 201 typedef enum { 202 CAM_ESMF_PRINT_NONE = 0x00, 203 CAM_ESMF_PRINT_STATUS = 0x10, 204 CAM_ESMF_PRINT_FULL_CMD = 0x20, 205 } cam_error_smp_flags; 206 207 typedef enum { 208 CAM_EAF_PRINT_NONE = 0x00, 209 CAM_EAF_PRINT_STATUS = 0x10, 210 CAM_EAF_PRINT_RESULT = 0x20 211 } cam_error_ata_flags; 212 213 struct cam_status_entry 214 { 215 cam_status status_code; 216 const char *status_text; 217 }; 218 219 extern const struct cam_status_entry cam_status_table[]; 220 extern const int num_cam_status_entries; 221 union ccb; 222 223 #ifdef SYSCTL_DECL /* from sysctl.h */ 224 SYSCTL_DECL(_kern_cam); 225 #endif 226 227 __BEGIN_DECLS 228 typedef int (cam_quirkmatch_t)(caddr_t, caddr_t); 229 230 caddr_t cam_quirkmatch(caddr_t target, caddr_t quirk_table, int num_entries, 231 int entry_size, cam_quirkmatch_t *comp_func); 232 233 void cam_strvis(u_int8_t *dst, const u_int8_t *src, int srclen, int dstlen); 234 235 int cam_strmatch(const u_int8_t *str, const u_int8_t *pattern, int str_len); 236 const struct cam_status_entry* 237 cam_fetch_status_entry(cam_status status); 238 #ifdef _KERNEL 239 char * cam_error_string(union ccb *ccb, char *str, int str_len, 240 cam_error_string_flags flags, 241 cam_error_proto_flags proto_flags); 242 void cam_error_print(union ccb *ccb, cam_error_string_flags flags, 243 cam_error_proto_flags proto_flags); 244 #else /* _KERNEL */ 245 struct cam_device; 246 247 char * cam_error_string(struct cam_device *device, union ccb *ccb, char *str, 248 int str_len, cam_error_string_flags flags, 249 cam_error_proto_flags proto_flags); 250 void cam_error_print(struct cam_device *device, union ccb *ccb, 251 cam_error_string_flags flags, 252 cam_error_proto_flags proto_flags, FILE *ofile); 253 #endif /* _KERNEL */ 254 __END_DECLS 255 256 #ifdef _KERNEL 257 static __inline void cam_init_pinfo(cam_pinfo *pinfo); 258 259 static __inline void cam_init_pinfo(cam_pinfo *pinfo) 260 { 261 pinfo->priority = CAM_PRIORITY_NONE; 262 pinfo->index = CAM_UNQUEUED_INDEX; 263 } 264 #endif 265 266 #endif /* _CAM_CAM_H */ 267