1/* 2 * ioctl interface for the scsi media changer driver 3 */ 4 5/* changer element types */ 6#define CHET_MT 0 /* media transport element (robot) */ 7#define CHET_ST 1 /* storage element (media slots) */ 8#define CHET_IE 2 /* import/export element */ 9#define CHET_DT 3 /* data transfer element (tape/cdrom/whatever) */ 10#define CHET_V1 4 /* vendor specific #1 */ 11#define CHET_V2 5 /* vendor specific #2 */ 12#define CHET_V3 6 /* vendor specific #3 */ 13#define CHET_V4 7 /* vendor specific #4 */ 14 15 16/* 17 * CHIOGPARAMS 18 * query changer properties 19 * 20 * CHIOVGPARAMS 21 * query vendor-specific element types 22 * 23 * accessing elements works by specifing type and unit of the element. 24 * for eample, storage elements are addressed with type = CHET_ST and 25 * unit = 0 .. cp_nslots-1 26 * 27 */ 28struct changer_params { 29 int cp_curpicker; /* current transport element */ 30 int cp_npickers; /* number of transport elements (CHET_MT) */ 31 int cp_nslots; /* number of storage elements (CHET_ST) */ 32 int cp_nportals; /* number of import/export elements (CHET_IE) */ 33 int cp_ndrives; /* number of data transfer elements (CHET_DT) */ 34}; 35struct changer_vendor_params { 36 int cvp_n1; /* number of vendor specific elems (CHET_V1) */ 37 char cvp_label1[16]; 38 int cvp_n2; /* number of vendor specific elems (CHET_V2) */ 39 char cvp_label2[16]; 40 int cvp_n3; /* number of vendor specific elems (CHET_V3) */ 41 char cvp_label3[16]; 42 int cvp_n4; /* number of vendor specific elems (CHET_V4) */ 43 char cvp_label4[16]; 44 int reserved[8]; 45}; 46 47 48/* 49 * CHIOMOVE 50 * move a medium from one element to another 51 */ 52struct changer_move { 53 int cm_fromtype; /* type/unit of source element */ 54 int cm_fromunit; 55 int cm_totype; /* type/unit of destination element */ 56 int cm_tounit; 57 int cm_flags; 58}; 59#define CM_INVERT 1 /* flag: rotate media (for double-sided like MOD) */ 60 61 62/* 63 * CHIOEXCHANGE 64 * move one medium from element #1 to element #2, 65 * and another one from element #2 to element #3. 66 * element #1 and #3 are allowed to be identical. 67 */ 68struct changer_exchange { 69 int ce_srctype; /* type/unit of element #1 */ 70 int ce_srcunit; 71 int ce_fdsttype; /* type/unit of element #2 */ 72 int ce_fdstunit; 73 int ce_sdsttype; /* type/unit of element #3 */ 74 int ce_sdstunit; 75 int ce_flags; 76}; 77#define CE_INVERT1 1 78#define CE_INVERT2 2 79 80 81/* 82 * CHIOPOSITION 83 * move the transport element (robot arm) to a specific element. 84 */ 85struct changer_position { 86 int cp_type; 87 int cp_unit; 88 int cp_flags; 89}; 90#define CP_INVERT 1 91 92 93/* 94 * CHIOGSTATUS 95 * get element status for all elements of a specific type 96 */ 97struct changer_element_status { 98 int ces_type; 99 unsigned char *ces_data; 100}; 101#define CESTATUS_FULL 0x01 /* full */ 102#define CESTATUS_IMPEXP 0x02 /* media was imported (inserted by sysop) */ 103#define CESTATUS_EXCEPT 0x04 /* error condition */ 104#define CESTATUS_ACCESS 0x08 /* access allowed */ 105#define CESTATUS_EXENAB 0x10 /* element can export media */ 106#define CESTATUS_INENAB 0x20 /* element can import media */ 107 108 109/* 110 * CHIOGELEM 111 * get more detailed status informtion for a single element 112 */ 113struct changer_get_element { 114 int cge_type; /* type/unit */ 115 int cge_unit; 116 int cge_status; /* status */ 117 int cge_errno; /* errno */ 118 int cge_srctype; /* source element of the last move/exchange */ 119 int cge_srcunit; 120 int cge_id; /* scsi id (for data transfer elements) */ 121 int cge_lun; /* scsi lun (for data transfer elements) */ 122 char cge_pvoltag[36]; /* primary volume tag */ 123 char cge_avoltag[36]; /* alternate volume tag */ 124 int cge_flags; 125}; 126/* flags */ 127#define CGE_ERRNO 0x01 /* errno available */ 128#define CGE_INVERT 0x02 /* media inverted */ 129#define CGE_SRC 0x04 /* media src available */ 130#define CGE_IDLUN 0x08 /* ID+LUN available */ 131#define CGE_PVOLTAG 0x10 /* primary volume tag available */ 132#define CGE_AVOLTAG 0x20 /* alternate volume tag available */ 133 134 135/* 136 * CHIOSVOLTAG 137 * set volume tag 138 */ 139struct changer_set_voltag { 140 int csv_type; /* type/unit */ 141 int csv_unit; 142 char csv_voltag[36]; /* volume tag */ 143 int csv_flags; 144}; 145#define CSV_PVOLTAG 0x01 /* primary volume tag */ 146#define CSV_AVOLTAG 0x02 /* alternate volume tag */ 147#define CSV_CLEARTAG 0x04 /* clear volume tag */ 148 149/* ioctls */ 150#define CHIOMOVE _IOW('c', 1,struct changer_move) 151#define CHIOEXCHANGE _IOW('c', 2,struct changer_exchange) 152#define CHIOPOSITION _IOW('c', 3,struct changer_position) 153#define CHIOGPICKER _IOR('c', 4,int) /* not impl. */ 154#define CHIOSPICKER _IOW('c', 5,int) /* not impl. */ 155#define CHIOGPARAMS _IOR('c', 6,struct changer_params) 156#define CHIOGSTATUS _IOW('c', 8,struct changer_element_status) 157#define CHIOGELEM _IOW('c',16,struct changer_get_element) 158#define CHIOINITELEM _IO('c',17) 159#define CHIOSVOLTAG _IOW('c',18,struct changer_set_voltag) 160#define CHIOGVPARAMS _IOR('c',19,struct changer_vendor_params) 161 162/* ---------------------------------------------------------------------- */ 163 164/* 165 * Local variables: 166 * c-basic-offset: 8 167 * End: 168 */ 169