[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>
diff --git a/drivers/s390/char/tape_3590.h b/drivers/s390/char/tape_3590.h
index cf274b9..aa51388 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_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 */