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/* SPDX-License-Identifier: GPL-2.0 WITH Linux-syscall-note */
/*
* ioctl interface for the scsi media changer driver
*/
#ifndef _LINUX_CHIO_H
#define _LINUX_CHIO_H
/* changer element types */
#define CHET_MT 0 /* media transport element (robot) */
#define CHET_ST 1 /* storage element (media slots) */
#define CHET_IE 2 /* import/export element */
#define CHET_DT 3 /* data transfer element (tape/cdrom/whatever) */
#define CHET_V1 4 /* vendor specific #1 */
#define CHET_V2 5 /* vendor specific #2 */
#define CHET_V3 6 /* vendor specific #3 */
#define CHET_V4 7 /* vendor specific #4 */
/*
* CHIOGPARAMS
* query changer properties
*
* CHIOVGPARAMS
* query vendor-specific element types
*
* accessing elements works by specifing type and unit of the element.
* for example, storage elements are addressed with type = CHET_ST and
* unit = 0 .. cp_nslots-1
*
*/
struct changer_params {
int cp_curpicker; /* current transport element */
int cp_npickers; /* number of transport elements (CHET_MT) */
int cp_nslots; /* number of storage elements (CHET_ST) */
int cp_nportals; /* number of import/export elements (CHET_IE) */
int cp_ndrives; /* number of data transfer elements (CHET_DT) */
};
struct changer_vendor_params {
int cvp_n1; /* number of vendor specific elems (CHET_V1) */
char cvp_label1[16];
int cvp_n2; /* number of vendor specific elems (CHET_V2) */
char cvp_label2[16];
int cvp_n3; /* number of vendor specific elems (CHET_V3) */
char cvp_label3[16];
int cvp_n4; /* number of vendor specific elems (CHET_V4) */
char cvp_label4[16];
int reserved[8];
};
/*
* CHIOMOVE
* move a medium from one element to another
*/
struct changer_move {
int cm_fromtype; /* type/unit of source element */
int cm_fromunit;
int cm_totype; /* type/unit of destination element */
int cm_tounit;
int cm_flags;
};
#define CM_INVERT 1 /* flag: rotate media (for double-sided like MOD) */
/*
* CHIOEXCHANGE
* move one medium from element #1 to element #2,
* and another one from element #2 to element #3.
* element #1 and #3 are allowed to be identical.
*/
struct changer_exchange {
int ce_srctype; /* type/unit of element #1 */
int ce_srcunit;
int ce_fdsttype; /* type/unit of element #2 */
int ce_fdstunit;
int ce_sdsttype; /* type/unit of element #3 */
int ce_sdstunit;
int ce_flags;
};
#define CE_INVERT1 1
#define CE_INVERT2 2
/*
* CHIOPOSITION
* move the transport element (robot arm) to a specific element.
*/
struct changer_position {
int cp_type;
int cp_unit;
int cp_flags;
};
#define CP_INVERT 1
/*
* CHIOGSTATUS
* get element status for all elements of a specific type
*/
struct changer_element_status {
int ces_type;
unsigned char *ces_data;
};
#define CESTATUS_FULL 0x01 /* full */
#define CESTATUS_IMPEXP 0x02 /* media was imported (inserted by sysop) */
#define CESTATUS_EXCEPT 0x04 /* error condition */
#define CESTATUS_ACCESS 0x08 /* access allowed */
#define CESTATUS_EXENAB 0x10 /* element can export media */
#define CESTATUS_INENAB 0x20 /* element can import media */
/*
* CHIOGELEM
* get more detailed status information for a single element
*/
struct changer_get_element {
int cge_type; /* type/unit */
int cge_unit;
int cge_status; /* status */
int cge_errno; /* errno */
int cge_srctype; /* source element of the last move/exchange */
int cge_srcunit;
int cge_id; /* scsi id (for data transfer elements) */
int cge_lun; /* scsi lun (for data transfer elements) */
char cge_pvoltag[36]; /* primary volume tag */
char cge_avoltag[36]; /* alternate volume tag */
int cge_flags;
};
/* flags */
#define CGE_ERRNO 0x01 /* errno available */
#define CGE_INVERT 0x02 /* media inverted */
#define CGE_SRC 0x04 /* media src available */
#define CGE_IDLUN 0x08 /* ID+LUN available */
#define CGE_PVOLTAG 0x10 /* primary volume tag available */
#define CGE_AVOLTAG 0x20 /* alternate volume tag available */
/*
* CHIOSVOLTAG
* set volume tag
*/
struct changer_set_voltag {
int csv_type; /* type/unit */
int csv_unit;
char csv_voltag[36]; /* volume tag */
int csv_flags;
};
#define CSV_PVOLTAG 0x01 /* primary volume tag */
#define CSV_AVOLTAG 0x02 /* alternate volume tag */
#define CSV_CLEARTAG 0x04 /* clear volume tag */
/* ioctls */
#define CHIOMOVE _IOW('c', 1,struct changer_move)
#define CHIOEXCHANGE _IOW('c', 2,struct changer_exchange)
#define CHIOPOSITION _IOW('c', 3,struct changer_position)
#define CHIOGPICKER _IOR('c', 4,int) /* not impl. */
#define CHIOSPICKER _IOW('c', 5,int) /* not impl. */
#define CHIOGPARAMS _IOR('c', 6,struct changer_params)
#define CHIOGSTATUS _IOW('c', 8,struct changer_element_status)
#define CHIOGELEM _IOW('c',16,struct changer_get_element)
#define CHIOINITELEM _IO('c',17)
#define CHIOSVOLTAG _IOW('c',18,struct changer_set_voltag)
#define CHIOGVPARAMS _IOR('c',19,struct changer_vendor_params)
#endif /* _LINUX_CHIO_H */