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| Current File : //usr/src/sys/sys/chio.h |
/*-
* Copyright (c) 1996 Jason R. Thorpe <thorpej@and.com>
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
* 3. All advertising materials mentioning features or use of this software
* must display the following acknowledgements:
* This product includes software developed by Jason R. Thorpe
* for And Communications, http://www.and.com/
* 4. The name of the author may not be used to endorse or promote products
* derived from this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
* IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
* BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
* LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
* AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
* OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
*
* $FreeBSD: release/9.1.0/sys/sys/chio.h 139825 2005-01-07 02:29:27Z imp $
*/
#ifndef _SYS_CHIO_H_
#define _SYS_CHIO_H_
#ifndef _KERNEL
#include <sys/types.h>
#endif
#include <sys/ioccom.h>
/*
* Element types. Used as "to" and "from" type indicators in move
* and exchange operations.
*
* Note that code in sys/scsi/ch.c relies on these values (uses them
* as offsets in an array, and other evil), so don't muck with them
* unless you know what you're doing.
*/
#define CHET_MT 0 /* medium transport (picker) */
#define CHET_ST 1 /* storage transport (slot) */
#define CHET_IE 2 /* import/export (portal) */
#define CHET_DT 3 /* data transfer (drive) */
#define CHET_MAX CHET_DT
/*
* Maximum length of a volume identification string
*/
#define CH_VOLTAG_MAXLEN 32
/*
* Structure used to execute a MOVE MEDIUM command.
*/
struct changer_move {
u_int16_t cm_fromtype; /* element type to move from */
u_int16_t cm_fromunit; /* logical unit of from element */
u_int16_t cm_totype; /* element type to move to */
u_int16_t cm_tounit; /* logical unit of to element */
u_int16_t cm_flags; /* misc. flags */
};
/* cm_flags */
#define CM_INVERT 0x01 /* invert media */
/*
* Structure used to execute an EXCHANGE MEDIUM command. In an
* exchange operation, the following steps occur:
*
* - media from source is moved to first destination.
*
* - media previously occupying first destination is moved
* to the second destination.
*
* The second destination may or may not be the same as the source.
* In the case of a simple exchange, the source and second destination
* are the same.
*/
struct changer_exchange {
u_int16_t ce_srctype; /* element type of source */
u_int16_t ce_srcunit; /* logical unit of source */
u_int16_t ce_fdsttype; /* element type of first destination */
u_int16_t ce_fdstunit; /* logical unit of first destination */
u_int16_t ce_sdsttype; /* element type of second destination */
u_int16_t ce_sdstunit; /* logical unit of second destination */
u_int16_t ce_flags; /* misc. flags */
};
/* ce_flags */
#define CE_INVERT1 0x01 /* invert media 1 */
#define CE_INVERT2 0x02 /* invert media 2 */
/*
* Structure used to execute a POSITION TO ELEMENT command. This
* moves the current picker in front of the specified element.
*/
struct changer_position {
u_int16_t cp_type; /* element type */
u_int16_t cp_unit; /* logical unit of element */
u_int16_t cp_flags; /* misc. flags */
};
/* cp_flags */
#define CP_INVERT 0x01 /* invert picker */
/*
* Data returned by CHIOGPARAMS.
*/
struct changer_params {
u_int16_t cp_npickers; /* number of pickers */
u_int16_t cp_nslots; /* number of slots */
u_int16_t cp_nportals; /* number of import/export portals */
u_int16_t cp_ndrives; /* number of drives */
};
/*
* Command used to get element status.
*/
struct changer_voltag {
u_char cv_volid[CH_VOLTAG_MAXLEN+1];
u_int16_t cv_serial;
};
typedef struct changer_voltag changer_voltag_t;
/*
* Flags definitions for ces_status
* Not all flags have meaning for all element types.
*/
typedef enum {
CES_STATUS_FULL = 0x001, /* element is full */
CES_STATUS_IMPEXP = 0x002, /* media deposited by operator */
CES_STATUS_EXCEPT = 0x004, /* element in abnormal state */
CES_PICKER_MASK = 0x005, /* flags valid for pickers */
CES_STATUS_ACCESS = 0x008, /* media accessible by picker */
CES_SLOT_MASK = 0x00c, /* flags valid for slots */
CES_DRIVE_MASK = 0x00c, /* flags valid for drives */
CES_STATUS_EXENAB = 0x010, /* element supports exporting */
CES_STATUS_INENAB = 0x020, /* element supports importing */
CES_PORTAL_MASK = 0x03f, /* flags valid for portals */
CES_INVERT = 0x040, /* invert bit */
CES_SOURCE_VALID = 0x080, /* source address (ces_source) valid */
CES_SCSIID_VALID = 0x100, /* ces_scsi_id is valid */
CES_LUN_VALID = 0x200 /* ces_scsi_lun is valid */
} ces_status_flags;
struct changer_element_status {
u_int8_t ces_type; /* element type */
u_int16_t ces_addr; /* logical element address */
u_int16_t ces_int_addr; /* changer element address */
ces_status_flags ces_flags; /*
* see CESTATUS definitions
* below
*/
u_int8_t ces_sensecode; /*
* additional sense
* code for element */
u_int8_t ces_sensequal; /*
* additional sense
* code qualifier
*/
u_int8_t ces_source_type; /*
* element type of
* source address
*/
u_int16_t ces_source_addr; /*
* source address of medium
*/
changer_voltag_t ces_pvoltag; /* primary volume tag */
changer_voltag_t ces_avoltag; /* alternate volume tag */
u_int8_t ces_scsi_id; /* SCSI id of element */
u_int8_t ces_scsi_lun; /* SCSI lun of element */
};
struct changer_element_status_request {
u_int16_t cesr_element_type;
u_int16_t cesr_element_base;
u_int16_t cesr_element_count;
u_int16_t cesr_flags;
#define CESR_VOLTAGS 0x01
struct changer_element_status *cesr_element_status;
};
struct changer_set_voltag_request {
u_int16_t csvr_type;
u_int16_t csvr_addr;
u_int16_t csvr_flags;
#define CSVR_MODE_MASK 0x0f /* mode mask, acceptable modes below: */
#define CSVR_MODE_SET 0x00 /* set volume tag if not set */
#define CSVR_MODE_REPLACE 0x01 /* unconditionally replace volume tag */
#define CSVR_MODE_CLEAR 0x02 /* clear volume tag */
#define CSVR_ALTERNATE 0x10 /* set to work with alternate voltag */
changer_voltag_t csvr_voltag;
};
#define CESTATUS_BITS \
"\20\6INEAB\5EXENAB\4ACCESS\3EXCEPT\2IMPEXP\1FULL"
#define CHIOMOVE _IOW('c', 0x01, struct changer_move)
#define CHIOEXCHANGE _IOW('c', 0x02, struct changer_exchange)
#define CHIOPOSITION _IOW('c', 0x03, struct changer_position)
#define CHIOGPICKER _IOR('c', 0x04, int)
#define CHIOSPICKER _IOW('c', 0x05, int)
#define CHIOGPARAMS _IOR('c', 0x06, struct changer_params)
#define CHIOIELEM _IOW('c', 0x07, u_int32_t)
#define CHIOGSTATUS _IOW('c', 0x08, struct changer_element_status_request)
#define CHIOSETVOLTAG _IOW('c', 0x09, struct changer_set_voltag_request)
#endif /* !_SYS_CHIO_H_ */