cced1dd42e
3592 tape devices are able to write data encrpyted on tape mediums. This z/Linux device driver support includes the following functions: * ioctl to switch on/off encryption * ioctl to query encryption status of drive * ioctls to set and query key encrypting keys (kekls) * long busy interrupt handling Signed-off-by: Michael Holzheu <holzheu@de.ibm.com> Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
171 lines
3.6 KiB
C
171 lines
3.6 KiB
C
/*
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* drivers/s390/char/tape_3590.h
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* tape device discipline for 3590 tapes.
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*
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* Copyright IBM Corp. 2001,2006
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* Author(s): Stefan Bader <shbader@de.ibm.com>
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* Michael Holzheu <holzheu@de.ibm.com>
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* Martin Schwidefsky <schwidefsky@de.ibm.com>
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*/
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#ifndef _TAPE_3590_H
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#define _TAPE_3590_H
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#define MEDIUM_SENSE 0xc2
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#define READ_PREVIOUS 0x0a
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#define MODE_SENSE 0xcf
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#define PERFORM_SS_FUNC 0x77
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#define READ_SS_DATA 0x3e
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#define PREP_RD_SS_DATA 0x18
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#define RD_ATTMSG 0x3
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#define SENSE_BRA_PER 0
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#define SENSE_BRA_CONT 1
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#define SENSE_BRA_RE 2
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#define SENSE_BRA_DRE 3
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#define SENSE_FMT_LIBRARY 0x23
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#define SENSE_FMT_UNSOLICITED 0x40
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#define SENSE_FMT_COMMAND_REJ 0x41
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#define SENSE_FMT_COMMAND_EXEC0 0x50
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#define SENSE_FMT_COMMAND_EXEC1 0x51
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#define SENSE_FMT_EVENT0 0x60
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#define SENSE_FMT_EVENT1 0x61
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#define SENSE_FMT_MIM 0x70
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#define SENSE_FMT_SIM 0x71
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#define MSENSE_UNASSOCIATED 0x00
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#define MSENSE_ASSOCIATED_MOUNT 0x01
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#define MSENSE_ASSOCIATED_UMOUNT 0x02
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#define MSENSE_CRYPT_MASK 0x00000010
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#define TAPE_3590_MAX_MSG 0xb0
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/* Datatypes */
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struct tape_3590_disc_data {
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struct tape390_crypt_info crypt_info;
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int read_back_op;
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};
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#define TAPE_3590_CRYPT_INFO(device) \
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((struct tape_3590_disc_data*)(device->discdata))->crypt_info
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#define TAPE_3590_READ_BACK_OP(device) \
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((struct tape_3590_disc_data*)(device->discdata))->read_back_op
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struct tape_3590_sense {
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unsigned int command_rej:1;
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unsigned int interv_req:1;
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unsigned int bus_out_check:1;
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unsigned int eq_check:1;
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unsigned int data_check:1;
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unsigned int overrun:1;
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unsigned int def_unit_check:1;
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unsigned int assgnd_elsew:1;
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unsigned int locate_fail:1;
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unsigned int inst_online:1;
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unsigned int reserved:1;
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unsigned int blk_seq_err:1;
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unsigned int begin_part:1;
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unsigned int wr_mode:1;
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unsigned int wr_prot:1;
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unsigned int not_cap:1;
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unsigned int bra:2;
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unsigned int lc:3;
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unsigned int vlf_active:1;
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unsigned int stm:1;
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unsigned int med_pos:1;
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unsigned int rac:8;
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unsigned int rc_rqc:16;
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unsigned int mc:8;
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unsigned int sense_fmt:8;
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union {
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struct {
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unsigned int emc:4;
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unsigned int smc:4;
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unsigned int sev:2;
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unsigned int reserved:6;
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unsigned int md:8;
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unsigned int refcode:8;
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unsigned int mid:16;
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unsigned int mp:16;
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unsigned char volid[6];
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unsigned int fid:8;
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} f70;
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struct {
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unsigned int emc:4;
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unsigned int smc:4;
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unsigned int sev:2;
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unsigned int reserved1:5;
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unsigned int mdf:1;
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unsigned char md[3];
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unsigned int simid:8;
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unsigned int uid:16;
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unsigned int refcode1:16;
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unsigned int refcode2:16;
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unsigned int refcode3:16;
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unsigned int reserved2:8;
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} f71;
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unsigned char data[14];
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} fmt;
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unsigned char pad[10];
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} __attribute__ ((packed));
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struct tape_3590_med_sense {
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unsigned int macst:4;
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unsigned int masst:4;
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char pad1[7];
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unsigned int flags;
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char pad2[116];
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} __attribute__ ((packed));
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/* Datastructures for 3592 encryption support */
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struct tape3592_kekl {
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__u8 flags;
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char label[64];
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} __attribute__ ((packed));
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struct tape3592_kekl_pair {
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__u8 count;
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struct tape3592_kekl kekl[2];
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} __attribute__ ((packed));
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struct tape3592_kekl_query_data {
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__u16 len;
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__u8 fmt;
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__u8 mc;
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__u32 id;
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__u8 flags;
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struct tape3592_kekl_pair kekls;
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char reserved[116];
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} __attribute__ ((packed));
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struct tape3592_kekl_query_order {
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__u8 code;
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__u8 flags;
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char reserved1[2];
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__u8 max_count;
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char reserved2[35];
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} __attribute__ ((packed));
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struct tape3592_kekl_set_order {
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__u8 code;
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__u8 flags;
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char reserved1[2];
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__u8 op;
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struct tape3592_kekl_pair kekls;
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char reserved2[120];
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} __attribute__ ((packed));
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#endif /* _TAPE_3590_H */
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