2 * Data structures and definitions for the CAM system.
4 * SPDX-License-Identifier: BSD-2-Clause
6 * Copyright (c) 1997 Justin T. Gibbs.
9 * Redistribution and use in source and binary forms, with or without
10 * modification, are permitted provided that the following conditions
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.
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
40 #include <sys/cdefs.h>
45 typedef u_int path_id_t;
46 typedef u_int target_id_t;
47 typedef u_int64_t lun_id_t;
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)
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))
61 * Maximum length for a CAM CDB.
63 #define CAM_MAX_CDBLEN 16
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
74 * Priority information for a CAM structure.
85 * The generation number is incremented every time a new entry is entered into
86 * the queue giving round robin per priority level scheduling.
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
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
107 * Macro to compare two generation numbers. It is used like this:
109 * if (GENERATIONCMP(a, >=, b))
112 * GERERATIONCMP uses modular arithmetic to guard against wraps
113 * wraps in the generation number.
115 #define GENERATIONCMP(x, op, y) ((int32_t)((x) - (y)) op 0)
117 /* CAM flags XXX Move to cam_periph.h ??? */
119 CAM_FLAG_NONE = 0x00,
120 CAM_EXPECT_INQ_CHANGE = 0x01,
121 CAM_RETRY_SELTO = 0x02 /* Retry Selection Timeouts */
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. */
134 /* CAM Status field values */
136 /* CCB request is in progress */
137 CAM_REQ_INPROG = 0x00,
139 /* CCB request completed without error */
142 /* CCB request aborted by the host */
143 CAM_REQ_ABORTED = 0x02,
145 /* Unable to abort CCB request */
148 /* CCB request completed with an error */
149 CAM_REQ_CMP_ERR = 0x04,
151 /* CAM subsystem is busy */
154 /* CCB request was invalid */
155 CAM_REQ_INVALID = 0x06,
157 /* Supplied Path ID is invalid */
158 CAM_PATH_INVALID = 0x07,
160 /* SCSI Device Not Installed/there */
161 CAM_DEV_NOT_THERE = 0x08,
163 /* Unable to terminate I/O CCB request */
164 CAM_UA_TERMIO = 0x09,
166 /* Target Selection Timeout */
167 CAM_SEL_TIMEOUT = 0x0a,
169 /* Command timeout */
170 CAM_CMD_TIMEOUT = 0x0b,
172 /* SCSI error, look at error code in CCB */
173 CAM_SCSI_STATUS_ERROR = 0x0c,
175 /* Message Reject Received */
176 CAM_MSG_REJECT_REC = 0x0d,
178 /* SCSI Bus Reset Sent/Received */
179 CAM_SCSI_BUS_RESET = 0x0e,
181 /* Uncorrectable parity error occurred */
182 CAM_UNCOR_PARITY = 0x0f,
184 /* Autosense: request sense cmd fail */
185 CAM_AUTOSENSE_FAIL = 0x10,
187 /* No HBA Detected error */
190 /* Data Overrun error */
191 CAM_DATA_RUN_ERR = 0x12,
193 /* Unexpected Bus Free */
194 CAM_UNEXP_BUSFREE = 0x13,
196 /* Target Bus Phase Sequence Failure */
197 CAM_SEQUENCE_FAIL = 0x14,
199 /* CCB length supplied is inadequate */
200 CAM_CCB_LEN_ERR = 0x15,
202 /* Unable to provide requested capability*/
203 CAM_PROVIDE_FAIL = 0x16,
205 /* A SCSI BDR msg was sent to target */
208 /* CCB request terminated by the host */
209 CAM_REQ_TERMIO = 0x18,
211 /* Unrecoverable Host Bus Adapter Error */
212 CAM_UNREC_HBA_ERROR = 0x19,
214 /* Request was too large for this host */
215 CAM_REQ_TOO_BIG = 0x1a,
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.
225 CAM_REQUEUE_REQ = 0x1b,
227 /* ATA error, look at error code in CCB */
228 CAM_ATA_STATUS_ERROR = 0x1c,
230 /* Initiator/Target Nexus lost. */
231 CAM_SCSI_IT_NEXUS_LOST = 0x1d,
233 /* SMP error, look at error code in CCB */
234 CAM_SMP_STATUS_ERROR = 0x1e,
237 * Command completed without error but exceeded the soft
240 CAM_REQ_SOFTTIMEOUT = 0x1f,
243 * 0x20 - 0x32 are unassigned
246 /* Initiator Detected Error */
249 /* Resource Unavailable */
250 CAM_RESRC_UNAVAIL = 0x34,
252 /* Unacknowledged Event by Host */
253 CAM_UNACKED_EVENT = 0x35,
255 /* Message Received in Host Target Mode */
256 CAM_MESSAGE_RECV = 0x36,
258 /* Invalid CDB received in Host Target Mode */
259 CAM_INVALID_CDB = 0x37,
261 /* Lun supplied is invalid */
262 CAM_LUN_INVALID = 0x38,
264 /* Target ID supplied is invalid */
265 CAM_TID_INVALID = 0x39,
267 /* The requested function is not available */
268 CAM_FUNC_NOTAVAIL = 0x3a,
270 /* Nexus is not established */
273 /* The initiator ID is invalid */
274 CAM_IID_INVALID = 0x3c,
276 /* The SCSI CDB has been received */
277 CAM_CDB_RECVD = 0x3d,
279 /* The LUN is already enabled for target mode */
280 CAM_LUN_ALRDY_ENA = 0x3e,
283 CAM_SCSI_BUSY = 0x3f,
289 /* The DEV queue is frozen w/this err */
290 CAM_DEV_QFRZN = 0x40,
292 /* Autosense data valid for target */
293 CAM_AUTOSNS_VALID = 0x80,
295 /* SIM ready to take more commands */
296 CAM_RELEASE_SIMQ = 0x100,
298 /* SIM has this command in its queue */
299 CAM_SIM_QUEUED = 0x200,
301 /* Quality of service data is valid */
302 CAM_QOS_VALID = 0x400,
304 /* Mask bits for just the status # */
305 CAM_STATUS_MASK = 0x3F,
308 * Target Specific Adjunct Status
311 /* sent sense with status */
312 CAM_SENT_SENSE = 0x40000000
317 CAM_ESF_COMMAND = 0x01,
318 CAM_ESF_CAM_STATUS = 0x02,
319 CAM_ESF_PROTO_STATUS = 0x04,
321 } cam_error_string_flags;
325 CAM_EPF_MINIMAL = 0x01,
326 CAM_EPF_NORMAL = 0x02,
328 CAM_EPF_LEVEL_MASK = 0x0f
329 /* All bits above bit 3 are protocol-specific */
330 } cam_error_proto_flags;
333 CAM_ESF_PRINT_NONE = 0x00,
334 CAM_ESF_PRINT_STATUS = 0x10,
335 CAM_ESF_PRINT_SENSE = 0x20
336 } cam_error_scsi_flags;
339 CAM_ESMF_PRINT_NONE = 0x00,
340 CAM_ESMF_PRINT_STATUS = 0x10,
341 CAM_ESMF_PRINT_FULL_CMD = 0x20,
342 } cam_error_smp_flags;
345 CAM_EAF_PRINT_NONE = 0x00,
346 CAM_EAF_PRINT_STATUS = 0x10,
347 CAM_EAF_PRINT_RESULT = 0x20
348 } cam_error_ata_flags;
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
359 struct cam_status_entry
361 cam_status status_code;
362 const char *status_text;
365 extern const struct cam_status_entry cam_status_table[];
366 extern const int num_cam_status_entries;
368 extern int cam_sort_io_queues;
373 #ifdef SYSCTL_DECL /* from sysctl.h */
374 SYSCTL_DECL(_kern_cam);
378 typedef int (cam_quirkmatch_t)(caddr_t, caddr_t);
380 caddr_t cam_quirkmatch(caddr_t target, caddr_t quirk_table, int num_entries,
381 int entry_size, cam_quirkmatch_t *comp_func);
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,
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);
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);
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);
411 static __inline void cam_init_pinfo(cam_pinfo *pinfo)
413 pinfo->priority = CAM_PRIORITY_NONE;
414 pinfo->index = CAM_UNQUEUED_INDEX;
418 #endif /* _CAM_CAM_H */