1 /* $FreeBSD: src/sys/cam/scsi/scsi_ch.h,v 1.2.6.1 2000/08/03 00:50:59 peter Exp $ */
2 /* $DragonFly: src/sys/bus/cam/scsi/scsi_ch.h,v 1.2 2003/06/17 04:28:19 dillon Exp $ */
3 /* $NetBSD: scsi_changer.h,v 1.11 1998/02/13 08:28:32 enami Exp $ */
6 * Copyright (c) 1996 Jason R. Thorpe <thorpej@and.com>
9 * Partially based on an autochanger driver written by Stefan Grefen
10 * and on an autochanger driver written by the Systems Programming Group
11 * at the University of Utah Computer Science Department.
13 * Redistribution and use in source and binary forms, with or without
14 * modification, are permitted provided that the following conditions
16 * 1. Redistributions of source code must retain the above copyright
17 * notice, this list of conditions and the following disclaimer.
18 * 2. Redistributions in binary form must reproduce the above copyright
19 * notice, this list of conditions and the following disclaimer in the
20 * documentation and/or other materials provided with the distribution.
21 * 3. All advertising materials mentioning features or use of this software
22 * must display the following acknowledgements:
23 * This product includes software developed by Jason R. Thorpe
24 * for And Communications, http://www.and.com/
25 * 4. The name of the author may not be used to endorse or promote products
26 * derived from this software without specific prior written permission.
28 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
29 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
30 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
31 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
32 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
33 * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
34 * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
35 * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
36 * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
37 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
42 * SCSI changer interface description
46 * Partially derived from software written by Stefan Grefen
47 * (grefen@goofy.zdv.uni-mainz.de soon grefen@convex.com)
48 * based on the SCSI System by written Julian Elischer (julian@tfs.com)
49 * for TRW Financial Systems.
51 * TRW Financial Systems, in accordance with their agreement with Carnegie
52 * Mellon University, makes this software available to CMU to distribute
53 * or use in any manner that they see fit as long as this message is kept with
54 * the software. For this reason TFS also grants any other persons or
55 * organisations permission to use or modify this software.
57 * TFS supplies this software to be publicly redistributed
58 * on the understanding that TFS is not responsible for the correct
59 * functioning of this software in any circumstances.
61 * Ported to run under 386BSD by Julian Elischer (julian@tfs.com) Sept 1992
64 #ifndef _SCSI_SCSI_CH_H
65 #define _SCSI_SCSI_CH_H 1
67 #include <sys/cdefs.h>
74 * Exchange the medium in the source element with the medium
75 * located at the destination element.
77 struct scsi_exchange_medium {
79 #define EXCHANGE_MEDIUM 0xa6
81 u_int8_t tea[2]; /* transport element address */
82 u_int8_t src[2]; /* source address */
83 u_int8_t fdst[2]; /* first destination address */
84 u_int8_t sdst[2]; /* second destination address */
86 #define EXCHANGE_MEDIUM_INV1 0x01
87 #define EXCHANGE_MEDIUM_INV2 0x02
92 * Cause the medium changer to check all elements for medium and any
93 * other status relevant to the element.
95 struct scsi_initialize_element_status {
97 #define INITIALIZE_ELEMENT_STATUS 0x07
104 * Request the changer to move a unit of media from the source element
105 * to the destination element.
107 struct scsi_move_medium {
109 #define MOVE_MEDIUM 0xa5
111 u_int8_t tea[2]; /* transport element address */
112 u_int8_t src[2]; /* source element address */
113 u_int8_t dst[2]; /* destination element address */
114 u_int8_t reserved[2];
116 #define MOVE_MEDIUM_INVERT 0x01
121 * Position the specified transport element (picker) in front of
122 * the destination element specified.
124 struct scsi_position_to_element {
126 #define POSITION_TO_ELEMENT 0x2b
128 u_int8_t tea[2]; /* transport element address */
129 u_int8_t dst[2]; /* destination element address */
130 u_int8_t reserved[2];
132 #define POSITION_TO_ELEMENT_INVERT 0x01
137 * Request that the changer report the status of its internal elements.
139 struct scsi_read_element_status {
141 #define READ_ELEMENT_STATUS 0xb8
143 #define READ_ELEMENT_STATUS_VOLTAG 0x10 /* report volume tag info */
144 /* ...next 4 bits are an element type code... */
145 u_int8_t sea[2]; /* starting element address */
146 u_int8_t count[2]; /* number of elements */
148 u_int8_t len[3]; /* length of data buffer */
153 struct scsi_request_volume_element_address {
155 #define REQUEST_VOLUME_ELEMENT_ADDRESS 0xb5
157 #define REQUEST_VOLUME_ELEMENT_ADDRESS_VOLTAG 0x10
158 /* ...next 4 bits are an element type code... */
159 u_int8_t eaddr[2]; /* element address */
160 u_int8_t count[2]; /* number of elements */
162 u_int8_t len[3]; /* length of data buffer */
167 /* XXX scsi_release */
170 * Changer-specific mode page numbers.
172 #define CH_ELEMENT_ADDR_ASSIGN_PAGE 0x1D
173 #define CH_TRANS_GEOM_PARAMS_PAGE 0x1E
174 #define CH_DEVICE_CAP_PAGE 0x1F
177 * Data returned by READ ELEMENT STATUS consists of an 8-byte header
178 * followed by one or more read_element_status_pages.
180 struct read_element_status_header {
181 u_int8_t fear[2]; /* first element address reported */
182 u_int8_t count[2]; /* number of elements available */
184 u_int8_t nbytes[3]; /* byte count of all pages */
187 struct read_element_status_page_header {
188 u_int8_t type; /* element type code; see type codes below */
190 #define READ_ELEMENT_STATUS_AVOLTAG 0x40
191 #define READ_ELEMENT_STATUS_PVOLTAG 0x80
192 u_int8_t edl[2]; /* element descriptor length */
194 u_int8_t nbytes[3]; /* byte count of all descriptors */
198 * Format of a volume tag
202 u_int8_t vif[32]; /* volume identification field */
203 u_int8_t reserved[2];
204 u_int8_t vsn[2]; /* volume sequence number */
207 struct read_element_status_descriptor {
208 u_int8_t eaddr[2]; /* element address */
211 #define READ_ELEMENT_STATUS_FULL 0x01
212 #define READ_ELEMENT_STATUS_IMPEXP 0x02
213 #define READ_ELEMENT_STATUS_EXCEPT 0x04
214 #define READ_ELEMENT_STATUS_ACCESS 0x08
215 #define READ_ELEMENT_STATUS_EXENAB 0x10
216 #define READ_ELEMENT_STATUS_INENAB 0x20
218 #define READ_ELEMENT_STATUS_MT_MASK1 0x05
219 #define READ_ELEMENT_STATUS_ST_MASK1 0x0c
220 #define READ_ELEMENT_STATUS_IE_MASK1 0x3f
221 #define READ_ELEMENT_STATUS_DT_MASK1 0x0c
228 * dt_scsi_flags and dt_scsi_addr are valid only on data transport
229 * elements. These bytes are undefined for all other element types.
231 u_int8_t dt_scsi_flags;
233 #define READ_ELEMENT_STATUS_DT_LUNMASK 0x07
234 #define READ_ELEMENT_STATUS_DT_LUVALID 0x10
235 #define READ_ELEMENT_STATUS_DT_IDVALID 0x20
236 #define READ_ELEMENT_STATUS_DT_NOTBUS 0x80
238 u_int8_t dt_scsi_addr;
243 #define READ_ELEMENT_STATUS_INVERT 0x40
244 #define READ_ELEMENT_STATUS_SVALID 0x80
245 u_int8_t ssea[2]; /* source storage element address */
247 struct volume_tag pvoltag; /* omitted if PVOLTAG == 0 */
248 struct volume_tag avoltag; /* omitted if AVOLTAG == 0 */
250 /* Other data may follow */
253 /* XXX add data returned by REQUEST VOLUME ELEMENT ADDRESS */
255 /* Element type codes */
256 #define ELEMENT_TYPE_MASK 0x0f /* Note: these aren't bits */
257 #define ELEMENT_TYPE_ALL 0x00
258 #define ELEMENT_TYPE_MT 0x01
259 #define ELEMENT_TYPE_ST 0x02
260 #define ELEMENT_TYPE_IE 0x03
261 #define ELEMENT_TYPE_DT 0x04
264 * XXX The following definitions should be common to all SCSI device types.
266 #define PGCODE_MASK 0x3f /* valid page number bits in pg_code */
267 #define PGCODE_PS 0x80 /* indicates page is savable */
270 * Send volume tag information to the changer
273 struct scsi_send_volume_tag {
275 #define SEND_VOLUME_TAG 0xb6
277 u_int8_t ea[2]; /* element address */
279 u_int8_t sac; /* send action code */
281 #define SEND_VOLUME_TAG_ASSERT_PRIMARY 0x08
282 #define SEND_VOLUME_TAG_ASSERT_ALTERNATE 0x09
283 #define SEND_VOLUME_TAG_REPLACE_PRIMARY 0x0a
284 #define SEND_VOLUME_TAG_REPLACE_ALTERNATE 0x0b
285 #define SEND_VOLUME_TAG_UNDEFINED_PRIMARY 0x0c
286 #define SEND_VOLUME_TAG_UNDEFINED_ALTERNATE 0x0d
288 u_int8_t reserved4[2];
289 u_int8_t pll[2]; /* parameter list length */
295 * Parameter format for SEND VOLUME TAG
298 struct scsi_send_volume_tag_parameters {
299 u_int8_t vitf[32]; /* volume tag identification template */
300 u_int8_t reserved1[2];
301 u_int8_t minvsn[2]; /* minimum volume sequence number */
302 u_int8_t reserved2[2];
303 u_int8_t maxvsn[2]; /* maximum volume sequence number */
307 * Device capabilities page.
309 * This page defines characteristics of the elemenet types in the
310 * medium changer device.
312 * Note in the definitions below, the following abbreviations are
314 * MT Medium transport element (picker)
315 * ST Storage transport element (slot)
316 * IE Import/export element (portal)
317 * DT Data tranfer element (tape/disk drive)
319 struct page_device_capabilities {
320 u_int8_t pg_code; /* page code (0x1f) */
321 u_int8_t pg_length; /* page length (0x12) */
324 * The STOR_xx bits indicate that an element of a given
325 * type may provide independent storage for a unit of
326 * media. The top four bits of this value are reserved.
337 * The MOVE_TO_yy bits indicate the changer supports
338 * moving a unit of medium from an element of a given type to an
339 * element of type yy. This is used to determine if a given
340 * MOVE MEDIUM command is legal. The top four bits of each
341 * of these values are reserved.
343 u_int8_t move_from_mt;
344 u_int8_t move_from_st;
345 u_int8_t move_from_ie;
346 u_int8_t move_from_dt;
347 #define MOVE_TO_MT 0x01
348 #define MOVE_TO_ST 0x02
349 #define MOVE_TO_IE 0x04
350 #define MOVE_TO_DT 0x08
352 u_int8_t reserved1[4];
355 * Similar to above, but for EXCHANGE MEDIUM.
357 u_int8_t exchange_with_mt;
358 u_int8_t exchange_with_st;
359 u_int8_t exchange_with_ie;
360 u_int8_t exchange_with_dt;
361 #define EXCHANGE_WITH_MT 0x01
362 #define EXCHANGE_WITH_ST 0x02
363 #define EXCHANGE_WITH_IE 0x04
364 #define EXCHANGE_WITH_DT 0x08
368 * Medium changer elemement address assignment page.
370 * Some of these fields can be a little confusing, so an explanation
373 * Each component within a a medium changer apparatus is called an
376 * The "medium transport element address" is the address of the first
377 * picker (robotic arm). "Number of medium transport elements" tells
378 * us how many pickers exist in the changer.
380 * The "first storage element address" is the address of the first
381 * slot in the tape or disk magazine. "Number of storage elements" tells
382 * us how many slots exist in the changer.
384 * The "first import/export element address" is the address of the first
385 * medium portal accessible both by the medium changer and an outside
386 * human operator. This is where the changer might deposit tapes destined
387 * for some vault. The "number of import/export elements" tells us
388 * not many of these portals exist in the changer. NOTE: this number may
391 * The "first data transfer element address" is the address of the first
392 * tape or disk drive in the changer. "Number of data transfer elements"
393 * tells us how many drives exist in the changer.
395 struct page_element_address_assignment {
396 u_int8_t pg_code; /* page code (0x1d) */
397 u_int8_t pg_length; /* page length (0x12) */
399 /* Medium transport element address */
402 /* Number of medium transport elements */
405 /* First storage element address */
408 /* Number of storage elements */
411 /* First import/export element address */
414 /* Number of import/export elements */
417 /* First data transfer element address */
420 /* Number of data trafer elements */
423 u_int8_t reserved[2];
427 * Transport geometry parameters page.
429 * Defines whether each medium transport element is a member of a set of
430 * elements that share a common robotics subsystem and whether the element
431 * is capable of media rotation. One transport geometry descriptor is
432 * transferred for each medium transport element, beginning with the first
433 * medium transport element (other than the default transport element address
436 struct page_transport_geometry_parameters {
437 u_int8_t pg_code; /* page code (0x1e) */
438 u_int8_t pg_length; /* page length; variable */
440 /* Transport geometry descriptor(s) are here. */
443 #define CAN_ROTATE 0x01
445 /* Member number in transport element set. */
450 void scsi_move_medium(struct ccb_scsiio *csio, u_int32_t retries,
451 void (*cbfcnp)(struct cam_periph *, union ccb *),
452 u_int8_t tag_action, u_int32_t tea, u_int32_t src,
453 u_int32_t dst, int invert, u_int8_t sense_len,
456 void scsi_exchange_medium(struct ccb_scsiio *csio, u_int32_t retries,
457 void (*cbfcnp)(struct cam_periph *, union ccb *),
458 u_int8_t tag_action, u_int32_t tea, u_int32_t src,
459 u_int32_t dst1, u_int32_t dst2, int invert1,
460 int invert2, u_int8_t sense_len, u_int32_t timeout);
462 void scsi_position_to_element(struct ccb_scsiio *csio, u_int32_t retries,
463 void (*cbfcnp)(struct cam_periph *, union ccb *),
464 u_int8_t tag_action, u_int32_t tea, u_int32_t dst,
465 int invert, u_int8_t sense_len,
468 void scsi_read_element_status(struct ccb_scsiio *csio, u_int32_t retries,
469 void (*cbfcnp)(struct cam_periph *, union ccb *),
470 u_int8_t tag_action, int voltag, u_int32_t sea,
471 u_int32_t count, u_int8_t *data_ptr,
472 u_int32_t dxfer_len, u_int8_t sense_len,
475 void scsi_initialize_element_status(struct ccb_scsiio *csio, u_int32_t retries,
476 void (*cbfcnp)(struct cam_periph *, union ccb *),
477 u_int8_t tag_action, u_int8_t sense_len,
479 void scsi_send_volume_tag(struct ccb_scsiio *csio, u_int32_t retries,
480 void (*cbfcnp)(struct cam_periph *, union ccb *),
482 u_int16_t element_address,
483 u_int8_t send_action_code,
484 struct scsi_send_volume_tag_parameters *parameters,
485 u_int8_t sense_len, u_int32_t timeout);
488 #endif /* _SCSI_SCSI_CH_H */