228 lines
7.6 KiB
C
228 lines
7.6 KiB
C
/*-
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* Copyright (c) 1996 Jason R. Thorpe <thorpej@and.com>
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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* 3. All advertising materials mentioning features or use of this software
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* must display the following acknowledgements:
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* This product includes software developed by Jason R. Thorpe
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* for And Communications, http://www.and.com/
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* 4. The name of the author may not be used to endorse or promote products
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* derived from this software without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
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* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
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* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
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* IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
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* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
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* BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
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* LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
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* AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
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* OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*
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* $FreeBSD$
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*/
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#ifndef _SYS_CHIO_H_
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#define _SYS_CHIO_H_
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#ifndef _KERNEL
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#include <sys/types.h>
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#endif
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#include <sys/ioccom.h>
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/*
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* Element types. Used as "to" and "from" type indicators in move
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* and exchange operations.
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*
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* Note that code in sys/scsi/ch.c relies on these values (uses them
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* as offsets in an array, and other evil), so don't muck with them
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* unless you know what you're doing.
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*/
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#define CHET_MT 0 /* medium transport (picker) */
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#define CHET_ST 1 /* storage transport (slot) */
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#define CHET_IE 2 /* import/export (portal) */
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#define CHET_DT 3 /* data transfer (drive) */
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#define CHET_MAX CHET_DT
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/*
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* Maximum length of a volume identification string
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*/
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#define CH_VOLTAG_MAXLEN 32
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/*
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* Structure used to execute a MOVE MEDIUM command.
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*/
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struct changer_move {
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u_int16_t cm_fromtype; /* element type to move from */
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u_int16_t cm_fromunit; /* logical unit of from element */
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u_int16_t cm_totype; /* element type to move to */
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u_int16_t cm_tounit; /* logical unit of to element */
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u_int16_t cm_flags; /* misc. flags */
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};
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/* cm_flags */
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#define CM_INVERT 0x01 /* invert media */
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/*
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* Structure used to execute an EXCHANGE MEDIUM command. In an
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* exchange operation, the following steps occur:
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*
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* - media from source is moved to first destination.
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*
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* - media previously occupying first destination is moved
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* to the second destination.
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*
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* The second destination may or may not be the same as the source.
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* In the case of a simple exchange, the source and second destination
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* are the same.
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*/
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struct changer_exchange {
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u_int16_t ce_srctype; /* element type of source */
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u_int16_t ce_srcunit; /* logical unit of source */
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u_int16_t ce_fdsttype; /* element type of first destination */
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u_int16_t ce_fdstunit; /* logical unit of first destination */
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u_int16_t ce_sdsttype; /* element type of second destination */
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u_int16_t ce_sdstunit; /* logical unit of second destination */
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u_int16_t ce_flags; /* misc. flags */
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};
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/* ce_flags */
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#define CE_INVERT1 0x01 /* invert media 1 */
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#define CE_INVERT2 0x02 /* invert media 2 */
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/*
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* Structure used to execute a POSITION TO ELEMENT command. This
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* moves the current picker in front of the specified element.
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*/
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struct changer_position {
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u_int16_t cp_type; /* element type */
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u_int16_t cp_unit; /* logical unit of element */
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u_int16_t cp_flags; /* misc. flags */
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};
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/* cp_flags */
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#define CP_INVERT 0x01 /* invert picker */
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/*
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* Data returned by CHIOGPARAMS.
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*/
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struct changer_params {
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u_int16_t cp_npickers; /* number of pickers */
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u_int16_t cp_nslots; /* number of slots */
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u_int16_t cp_nportals; /* number of import/export portals */
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u_int16_t cp_ndrives; /* number of drives */
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};
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/*
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* Command used to get element status.
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*/
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struct changer_voltag {
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u_char cv_volid[CH_VOLTAG_MAXLEN+1];
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u_int16_t cv_serial;
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};
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typedef struct changer_voltag changer_voltag_t;
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/*
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* Flags definitions for ces_status
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* Not all flags have meaning for all element types.
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*/
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typedef enum {
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CES_STATUS_FULL = 0x001, /* element is full */
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CES_STATUS_IMPEXP = 0x002, /* media deposited by operator */
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CES_STATUS_EXCEPT = 0x004, /* element in abnormal state */
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CES_PICKER_MASK = 0x005, /* flags valid for pickers */
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CES_STATUS_ACCESS = 0x008, /* media accessible by picker */
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CES_SLOT_MASK = 0x00c, /* flags valid for slots */
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CES_DRIVE_MASK = 0x00c, /* flags valid for drives */
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CES_STATUS_EXENAB = 0x010, /* element supports exporting */
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CES_STATUS_INENAB = 0x020, /* element supports importing */
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CES_PORTAL_MASK = 0x03f, /* flags valid for portals */
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CES_INVERT = 0x040, /* invert bit */
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CES_SOURCE_VALID = 0x080, /* source address (ces_source) valid */
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CES_SCSIID_VALID = 0x100, /* ces_scsi_id is valid */
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CES_LUN_VALID = 0x200 /* ces_scsi_lun is valid */
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} ces_status_flags;
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struct changer_element_status {
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u_int8_t ces_type; /* element type */
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u_int16_t ces_addr; /* logical element address */
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u_int16_t ces_int_addr; /* changer element address */
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ces_status_flags ces_flags; /*
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* see CESTATUS definitions
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* below
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*/
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u_int8_t ces_sensecode; /*
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* additional sense
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* code for element */
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u_int8_t ces_sensequal; /*
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* additional sense
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* code qualifier
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*/
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u_int8_t ces_source_type; /*
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* element type of
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* source address
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*/
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u_int16_t ces_source_addr; /*
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* source address of medium
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*/
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changer_voltag_t ces_pvoltag; /* primary volume tag */
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changer_voltag_t ces_avoltag; /* alternate volume tag */
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u_int8_t ces_scsi_id; /* SCSI id of element */
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u_int8_t ces_scsi_lun; /* SCSI lun of element */
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};
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struct changer_element_status_request {
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u_int16_t cesr_element_type;
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u_int16_t cesr_element_base;
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u_int16_t cesr_element_count;
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u_int16_t cesr_flags;
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#define CESR_VOLTAGS 0x01
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struct changer_element_status *cesr_element_status;
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};
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struct changer_set_voltag_request {
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u_int16_t csvr_type;
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u_int16_t csvr_addr;
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u_int16_t csvr_flags;
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#define CSVR_MODE_MASK 0x0f /* mode mask, acceptable modes below: */
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#define CSVR_MODE_SET 0x00 /* set volume tag if not set */
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#define CSVR_MODE_REPLACE 0x01 /* unconditionally replace volume tag */
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#define CSVR_MODE_CLEAR 0x02 /* clear volume tag */
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#define CSVR_ALTERNATE 0x10 /* set to work with alternate voltag */
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changer_voltag_t csvr_voltag;
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};
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#define CESTATUS_BITS \
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"\20\6INEAB\5EXENAB\4ACCESS\3EXCEPT\2IMPEXP\1FULL"
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#define CHIOMOVE _IOW('c', 0x01, struct changer_move)
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#define CHIOEXCHANGE _IOW('c', 0x02, struct changer_exchange)
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#define CHIOPOSITION _IOW('c', 0x03, struct changer_position)
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#define CHIOGPICKER _IOR('c', 0x04, int)
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#define CHIOSPICKER _IOW('c', 0x05, int)
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#define CHIOGPARAMS _IOR('c', 0x06, struct changer_params)
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#define CHIOIELEM _IOW('c', 0x07, u_int32_t)
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#define CHIOGSTATUS _IOW('c', 0x08, struct changer_element_status_request)
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#define CHIOSETVOLTAG _IOW('c', 0x09, struct changer_set_voltag_request)
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#endif /* !_SYS_CHIO_H_ */
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