LXR linux/drivers/s390/char/tape

   1/* SPDX-License-Identifier: GPL-2.0 */
   2/*
   3 *    tape device discipline for 3590 tapes.
   4 *
   5 *    Copyright IBM Corp. 2001, 2006
   6 *    Author(s): Stefan Bader <shbader@de.ibm.com>
   7 *               Michael Holzheu <holzheu@de.ibm.com>
   8 *               Martin Schwidefsky <schwidefsky@de.ibm.com>
   9 */
  10
  11#ifndef _TAPE_3590_H
  12#define _TAPE_3590_H
  13
  14#define MEDIUM_SENSE    0xc2
  15#define READ_PREVIOUS   0x0a
  16#define MODE_SENSE      0xcf
  17#define PERFORM_SS_FUNC 0x77
  18#define READ_SS_DATA    0x3e
  19
  20#define PREP_RD_SS_DATA 0x18
  21#define RD_ATTMSG       0x3
  22
  23#define SENSE_BRA_PER  0
  24#define SENSE_BRA_CONT 1
  25#define SENSE_BRA_RE   2
  26#define SENSE_BRA_DRE  3
  27
  28#define SENSE_FMT_LIBRARY       0x23
  29#define SENSE_FMT_UNSOLICITED   0x40
  30#define SENSE_FMT_COMMAND_REJ   0x41
  31#define SENSE_FMT_COMMAND_EXEC0 0x50
  32#define SENSE_FMT_COMMAND_EXEC1 0x51
  33#define SENSE_FMT_EVENT0        0x60
  34#define SENSE_FMT_EVENT1        0x61
  35#define SENSE_FMT_MIM           0x70
  36#define SENSE_FMT_SIM           0x71
  37
  38#define MSENSE_UNASSOCIATED      0x00
  39#define MSENSE_ASSOCIATED_MOUNT  0x01
  40#define MSENSE_ASSOCIATED_UMOUNT 0x02
  41#define MSENSE_CRYPT_MASK        0x00000010
  42
  43#define TAPE_3590_MAX_MSG        0xb0
  44
  45/* Datatypes */
  46
  47struct tape_3590_disc_data {
  48        struct tape390_crypt_info crypt_info;
  49        int read_back_op;
  50};
  51
  52#define TAPE_3590_CRYPT_INFO(device) \
  53        ((struct tape_3590_disc_data*)(device->discdata))->crypt_info
  54#define TAPE_3590_READ_BACK_OP(device) \
  55        ((struct tape_3590_disc_data*)(device->discdata))->read_back_op
  56
  57struct tape_3590_sense {
  58
  59        unsigned int command_rej:1;
  60        unsigned int interv_req:1;
  61        unsigned int bus_out_check:1;
  62        unsigned int eq_check:1;
  63        unsigned int data_check:1;
  64        unsigned int overrun:1;
  65        unsigned int def_unit_check:1;
  66        unsigned int assgnd_elsew:1;
  67
  68        unsigned int locate_fail:1;
  69        unsigned int inst_online:1;
  70        unsigned int reserved:1;
  71        unsigned int blk_seq_err:1;
  72        unsigned int begin_part:1;
  73        unsigned int wr_mode:1;
  74        unsigned int wr_prot:1;
  75        unsigned int not_cap:1;
  76
  77        unsigned int bra:2;
  78        unsigned int lc:3;
  79        unsigned int vlf_active:1;
  80        unsigned int stm:1;
  81        unsigned int med_pos:1;
  82
  83        unsigned int rac:8;
  84
  85        unsigned int rc_rqc:16;
  86
  87        unsigned int mc:8;
  88
  89        unsigned int sense_fmt:8;
  90
  91        union {
  92                struct {
  93                        unsigned int emc:4;
  94                        unsigned int smc:4;
  95                        unsigned int sev:2;
  96                        unsigned int reserved:6;
  97                        unsigned int md:8;
  98                        unsigned int refcode:8;
  99                        unsigned int mid:16;
 100                        unsigned int mp:16;
 101                        unsigned char volid[6];
 102                        unsigned int fid:8;
 103                } f70;
 104                struct {
 105                        unsigned int emc:4;
 106                        unsigned int smc:4;
 107                        unsigned int sev:2;
 108                        unsigned int reserved1:5;
 109                        unsigned int mdf:1;
 110                        unsigned char md[3];
 111                        unsigned int simid:8;
 112                        unsigned int uid:16;
 113                        unsigned int refcode1:16;
 114                        unsigned int refcode2:16;
 115                        unsigned int refcode3:16;
 116                        unsigned int reserved2:8;
 117                } f71;
 118                unsigned char data[14];
 119        } fmt;
 120        unsigned char pad[10];
 121
 122} __attribute__ ((packed));
 123
 124struct tape_3590_med_sense {
 125        unsigned int macst:4;
 126        unsigned int masst:4;
 127        char pad1[7];
 128        unsigned int flags;
 129        char pad2[116];
 130} __attribute__ ((packed));
 131
 132struct tape_3590_rdc_data {
 133        char data[64];
 134} __attribute__ ((packed));
 135
 136/* Datastructures for 3592 encryption support */
 137
 138struct tape3592_kekl {
 139        __u8 flags;
 140        char label[64];
 141} __attribute__ ((packed));
 142
 143struct tape3592_kekl_pair {
 144        __u8 count;
 145        struct tape3592_kekl kekl[2];
 146} __attribute__ ((packed));
 147
 148struct tape3592_kekl_query_data {
 149        __u16 len;
 150        __u8  fmt;
 151        __u8  mc;
 152        __u32 id;
 153        __u8  flags;
 154        struct tape3592_kekl_pair kekls;
 155        char reserved[116];
 156} __attribute__ ((packed));
 157
 158struct tape3592_kekl_query_order {
 159        __u8 code;
 160        __u8 flags;
 161        char reserved1[2];
 162        __u8 max_count;
 163        char reserved2[35];
 164} __attribute__ ((packed));
 165
 166struct tape3592_kekl_set_order {
 167        __u8 code;
 168        __u8 flags;
 169        char reserved1[2];
 170        __u8 op;
 171        struct tape3592_kekl_pair kekls;
 172        char reserved2[120];
 173} __attribute__ ((packed));
 174
 175#endif /* _TAPE_3590_H */
 176