2 files changed, 113 insertions, 0 deletions
diff --git a/arch/s390/include/uapi/asm/Kbuild b/arch/s390/include/uapi/asm/Kbuild
index bf736e764cb4..6848ba5c1454 100644
--- a/arch/s390/include/uapi/asm/Kbuild
+++ b/arch/s390/include/uapi/asm/Kbuild
@@ -24,6 +24,7 @@ header-y += mman.h
 header-y += monwriter.h
 header-y += msgbuf.h
 header-y += param.h
+header-y += pkey.h
 header-y += poll.h
 header-y += posix_types.h
 header-y += ptrace.h
diff --git a/arch/s390/include/uapi/asm/pkey.h b/arch/s390/include/uapi/asm/pkey.h
new file mode 100644
index 000000000000..ed7f19c27ce5
--- /dev/null
+++ b/arch/s390/include/uapi/asm/pkey.h
@@ -0,0 +1,112 @@
+/*
+ * Userspace interface to the pkey device driver
+ *
+ * Copyright IBM Corp. 2017
+ *
+ * Author: Harald Freudenberger <freude@de.ibm.com>
+ *
+ */
+
+#ifndef _UAPI_PKEY_H
+#define _UAPI_PKEY_H
+
+#include <linux/ioctl.h>
+#include <linux/types.h>
+
+/*
+ * Ioctl calls supported by the pkey device driver
+ */
+
+#define PKEY_IOCTL_MAGIC 'p'
+
+#define SECKEYBLOBSIZE	64     /* secure key blob size is always 64 bytes */
+#define MAXPROTKEYSIZE	64  /* a protected key blob may be up to 64 bytes */
+#define MAXCLRKEYSIZE	32     /* a clear key value may be up to 32 bytes */
+
+/* defines for the type field within the pkey_protkey struct */
+#define PKEY_KEYTYPE_AES_128  1
+#define PKEY_KEYTYPE_AES_192  2
+#define PKEY_KEYTYPE_AES_256  3
+
+/* Struct to hold a secure key blob */
+struct pkey_seckey {
+	__u8  seckey[SECKEYBLOBSIZE];		  /* the secure key blob */
+};
+
+/* Struct to hold protected key and length info */
+struct pkey_protkey {
+	__u32 type;	     /* key type, one of the PKEY_KEYTYPE values */
+	__u32 len;		/* bytes actually stored in protkey[]	 */
+	__u8  protkey[MAXPROTKEYSIZE];	       /* the protected key blob */
+};
+
+/* Struct to hold a clear key value */
+struct pkey_clrkey {
+	__u8  clrkey[MAXCLRKEYSIZE]; /* 16, 24, or 32 byte clear key value */
+};
+
+/*
+ * Generate secure key
+ */
+struct pkey_genseck {
+	__u16 cardnr;		    /* in: card to use or FFFF for any	 */
+	__u16 domain;		    /* in: domain or FFFF for any	 */
+	__u32 keytype;		    /* in: key type to generate		 */
+	struct pkey_seckey seckey;  /* out: the secure key blob		 */
+};
+#define PKEY_GENSECK _IOWR(PKEY_IOCTL_MAGIC, 0x01, struct pkey_genseck)
+
+/*
+ * Construct secure key from clear key value
+ */
+struct pkey_clr2seck {
+	__u16 cardnr;		    /* in: card to use or FFFF for any	 */
+	__u16 domain;		    /* in: domain or FFFF for any	 */
+	__u32 keytype;		    /* in: key type to generate		 */
+	struct pkey_clrkey clrkey;  /* in: the clear key value		 */
+	struct pkey_seckey seckey;  /* out: the secure key blob		 */
+};
+#define PKEY_CLR2SECK _IOWR(PKEY_IOCTL_MAGIC, 0x02, struct pkey_clr2seck)
+
+/*
+ * Fabricate protected key from a secure key
+ */
+struct pkey_sec2protk {
+	__u16 cardnr;		     /* in: card to use or FFFF for any   */
+	__u16 domain;		     /* in: domain or FFFF for any	  */
+	struct pkey_seckey seckey;   /* in: the secure key blob		  */
+	struct pkey_protkey protkey; /* out: the protected key		  */
+};
+#define PKEY_SEC2PROTK _IOWR(PKEY_IOCTL_MAGIC, 0x03, struct pkey_sec2protk)
+
+/*
+ * Fabricate protected key from an clear key value
+ */
+struct pkey_clr2protk {
+	__u32 keytype;		     /* in: key type to generate	  */
+	struct pkey_clrkey clrkey;   /* in: the clear key value		  */
+	struct pkey_protkey protkey; /* out: the protected key		  */
+};
+#define PKEY_CLR2PROTK _IOWR(PKEY_IOCTL_MAGIC, 0x04, struct pkey_clr2protk)
+
+/*
+ * Search for matching crypto card based on the Master Key
+ * Verification Pattern provided inside a secure key.
+ */
+struct pkey_findcard {
+	struct pkey_seckey seckey;	       /* in: the secure key blob */
+	__u16  cardnr;			       /* out: card number	  */
+	__u16  domain;			       /* out: domain number	  */
+};
+#define PKEY_FINDCARD _IOWR(PKEY_IOCTL_MAGIC, 0x05, struct pkey_findcard)
+
+/*
+ * Combined together: findcard + sec2prot
+ */
+struct pkey_skey2pkey {
+	struct pkey_seckey seckey;   /* in: the secure key blob		  */
+	struct pkey_protkey protkey; /* out: the protected key		  */
+};
+#define PKEY_SKEY2PKEY _IOWR(PKEY_IOCTL_MAGIC, 0x06, struct pkey_skey2pkey)
+
+#endif /* _UAPI_PKEY_H */