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1/* SPDX-License-Identifier: GPL-2.0 WITH Linux-syscall-note */2/*3 * ioctl interface for the scsi media changer driver4 */5 6#ifndef _UAPI_LINUX_CHIO_H7#define _UAPI_LINUX_CHIO_H8 9/* changer element types */10#define CHET_MT 0 /* media transport element (robot) */11#define CHET_ST 1 /* storage element (media slots) */12#define CHET_IE 2 /* import/export element */13#define CHET_DT 3 /* data transfer element (tape/cdrom/whatever) */14#define CHET_V1 4 /* vendor specific #1 */15#define CHET_V2 5 /* vendor specific #2 */16#define CHET_V3 6 /* vendor specific #3 */17#define CHET_V4 7 /* vendor specific #4 */18 19 20/*21 * CHIOGPARAMS22 * query changer properties23 *24 * CHIOVGPARAMS25 * query vendor-specific element types26 *27 * accessing elements works by specifing type and unit of the element.28 * for example, storage elements are addressed with type = CHET_ST and29 * unit = 0 .. cp_nslots-130 *31 */32struct changer_params {33 int cp_curpicker; /* current transport element */34 int cp_npickers; /* number of transport elements (CHET_MT) */35 int cp_nslots; /* number of storage elements (CHET_ST) */36 int cp_nportals; /* number of import/export elements (CHET_IE) */37 int cp_ndrives; /* number of data transfer elements (CHET_DT) */38};39struct changer_vendor_params {40 int cvp_n1; /* number of vendor specific elems (CHET_V1) */41 char cvp_label1[16];42 int cvp_n2; /* number of vendor specific elems (CHET_V2) */43 char cvp_label2[16];44 int cvp_n3; /* number of vendor specific elems (CHET_V3) */45 char cvp_label3[16];46 int cvp_n4; /* number of vendor specific elems (CHET_V4) */47 char cvp_label4[16];48 int reserved[8];49};50 51 52/*53 * CHIOMOVE54 * move a medium from one element to another55 */56struct changer_move {57 int cm_fromtype; /* type/unit of source element */58 int cm_fromunit; 59 int cm_totype; /* type/unit of destination element */60 int cm_tounit;61 int cm_flags;62};63#define CM_INVERT 1 /* flag: rotate media (for double-sided like MOD) */64 65 66/*67 * CHIOEXCHANGE68 * move one medium from element #1 to element #2,69 * and another one from element #2 to element #3.70 * element #1 and #3 are allowed to be identical.71 */72struct changer_exchange {73 int ce_srctype; /* type/unit of element #1 */74 int ce_srcunit;75 int ce_fdsttype; /* type/unit of element #2 */76 int ce_fdstunit;77 int ce_sdsttype; /* type/unit of element #3 */78 int ce_sdstunit;79 int ce_flags;80};81#define CE_INVERT1 182#define CE_INVERT2 283 84 85/*86 * CHIOPOSITION87 * move the transport element (robot arm) to a specific element.88 */89struct changer_position {90 int cp_type;91 int cp_unit;92 int cp_flags;93};94#define CP_INVERT 195 96 97/*98 * CHIOGSTATUS99 * get element status for all elements of a specific type100 */101struct changer_element_status {102 int ces_type;103 unsigned char __user *ces_data;104};105#define CESTATUS_FULL 0x01 /* full */106#define CESTATUS_IMPEXP 0x02 /* media was imported (inserted by sysop) */107#define CESTATUS_EXCEPT 0x04 /* error condition */108#define CESTATUS_ACCESS 0x08 /* access allowed */109#define CESTATUS_EXENAB 0x10 /* element can export media */110#define CESTATUS_INENAB 0x20 /* element can import media */111 112 113/*114 * CHIOGELEM115 * get more detailed status information for a single element116 */117struct changer_get_element {118 int cge_type; /* type/unit */119 int cge_unit;120 int cge_status; /* status */121 int cge_errno; /* errno */122 int cge_srctype; /* source element of the last move/exchange */123 int cge_srcunit;124 int cge_id; /* scsi id (for data transfer elements) */125 int cge_lun; /* scsi lun (for data transfer elements) */126 char cge_pvoltag[36]; /* primary volume tag */127 char cge_avoltag[36]; /* alternate volume tag */128 int cge_flags;129};130/* flags */131#define CGE_ERRNO 0x01 /* errno available */132#define CGE_INVERT 0x02 /* media inverted */133#define CGE_SRC 0x04 /* media src available */134#define CGE_IDLUN 0x08 /* ID+LUN available */135#define CGE_PVOLTAG 0x10 /* primary volume tag available */136#define CGE_AVOLTAG 0x20 /* alternate volume tag available */137 138 139/*140 * CHIOSVOLTAG141 * set volume tag142 */143struct changer_set_voltag {144 int csv_type; /* type/unit */145 int csv_unit;146 char csv_voltag[36]; /* volume tag */147 int csv_flags;148};149#define CSV_PVOLTAG 0x01 /* primary volume tag */150#define CSV_AVOLTAG 0x02 /* alternate volume tag */151#define CSV_CLEARTAG 0x04 /* clear volume tag */152 153/* ioctls */154#define CHIOMOVE _IOW('c', 1,struct changer_move)155#define CHIOEXCHANGE _IOW('c', 2,struct changer_exchange)156#define CHIOPOSITION _IOW('c', 3,struct changer_position)157#define CHIOGPICKER _IOR('c', 4,int) /* not impl. */158#define CHIOSPICKER _IOW('c', 5,int) /* not impl. */159#define CHIOGPARAMS _IOR('c', 6,struct changer_params)160#define CHIOGSTATUS _IOW('c', 8,struct changer_element_status)161#define CHIOGELEM _IOW('c',16,struct changer_get_element)162#define CHIOINITELEM _IO('c',17)163#define CHIOSVOLTAG _IOW('c',18,struct changer_set_voltag)164#define CHIOGVPARAMS _IOR('c',19,struct changer_vendor_params)165 166#endif /* _UAPI_LINUX_CHIO_H */167