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 example, storage elements are addressed with type = CHET_ST and 25 * unit = 0 .. cp_nslots-1 26 * 27 */ 28 struct 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 }; 35 struct 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 */ 52 struct 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 */ 68 struct 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 */ 85 struct 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 */ 97 struct changer_element_status { 98 int ces_type; 99 unsigned char __user *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 information for a single element 112 */ 113 struct 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 */ 139 struct 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