LXR linux/drivers/s390/char/tape

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