diff options
| author | Michael Holzheu <holzheu@de.ibm.com> | 2007-02-05 23:18:26 +0300 |
|---|---|---|
| committer | Martin Schwidefsky <schwidefsky@de.ibm.com> | 2007-02-05 23:18:26 +0300 |
| commit | cced1dd42ebcebc7fa7f02fe487e48aa71752401 (patch) | |
| tree | 989ef44c23b900309f070184b8bf3412d5b98dbf /drivers/s390/char/tape_3590.h | |
| parent | fe355b7f1c7400cbb71762a1237461be03f88265 (diff) | |
| download | linux-cced1dd42ebcebc7fa7f02fe487e48aa71752401.tar.xz | |
[S390] Add crypto support for 3592 tape devices
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>
Diffstat (limited to 'drivers/s390/char/tape_3590.h')
| -rw-r--r-- | drivers/s390/char/tape_3590.h | 53 |
1 files changed, 50 insertions, 3 deletions
diff --git a/drivers/s390/char/tape_3590.h b/drivers/s390/char/tape_3590.h index cf274b9445a6..aa5138807af1 100644 --- a/drivers/s390/char/tape_3590.h +++ b/drivers/s390/char/tape_3590.h @@ -2,7 +2,7 @@ * drivers/s390/char/tape_3590.h * tape device discipline for 3590 tapes. * - * Copyright (C) IBM Corp. 2001,2006 + * Copyright IBM Corp. 2001,2006 * Author(s): Stefan Bader <shbader@de.ibm.com> * Michael Holzheu <holzheu@de.ibm.com> * Martin Schwidefsky <schwidefsky@de.ibm.com> @@ -38,16 +38,22 @@ #define MSENSE_UNASSOCIATED 0x00 #define MSENSE_ASSOCIATED_MOUNT 0x01 #define MSENSE_ASSOCIATED_UMOUNT 0x02 +#define MSENSE_CRYPT_MASK 0x00000010 #define TAPE_3590_MAX_MSG 0xb0 /* Datatypes */ struct tape_3590_disc_data { - unsigned char modeset_byte; + struct tape390_crypt_info crypt_info; int read_back_op; }; +#define TAPE_3590_CRYPT_INFO(device) \ + ((struct tape_3590_disc_data*)(device->discdata))->crypt_info +#define TAPE_3590_READ_BACK_OP(device) \ + ((struct tape_3590_disc_data*)(device->discdata))->read_back_op + struct tape_3590_sense { unsigned int command_rej:1; @@ -118,7 +124,48 @@ struct tape_3590_sense { struct tape_3590_med_sense { unsigned int macst:4; unsigned int masst:4; - char pad[127]; + char pad1[7]; + unsigned int flags; + char pad2[116]; +} __attribute__ ((packed)); + +/* Datastructures for 3592 encryption support */ + +struct tape3592_kekl { + __u8 flags; + char label[64]; +} __attribute__ ((packed)); + +struct tape3592_kekl_pair { + __u8 count; + struct tape3592_kekl kekl[2]; +} __attribute__ ((packed)); + +struct tape3592_kekl_query_data { + __u16 len; + __u8 fmt; + __u8 mc; + __u32 id; + __u8 flags; + struct tape3592_kekl_pair kekls; + char reserved[116]; +} __attribute__ ((packed)); + +struct tape3592_kekl_query_order { + __u8 code; + __u8 flags; + char reserved1[2]; + __u8 max_count; + char reserved2[35]; +} __attribute__ ((packed)); + +struct tape3592_kekl_set_order { + __u8 code; + __u8 flags; + char reserved1[2]; + __u8 op; + struct tape3592_kekl_pair kekls; + char reserved2[120]; } __attribute__ ((packed)); #endif /* _TAPE_3590_H */ |