Move user-visible parts of drivers/s390/crypto/z90crypt.h to include/asm-s390

Also remove Bob Burroughs' email address, since it's no longer valid.

Acked-by: Eric D Rossman <edrossma@us.ibm.com>
Signed-off-by: David Woodhouse <dwmw2@infradead.org>

1 files changed, 212 insertions, 0 deletions

diff --git a/include/asm-s390/z90crypt.h b/include/asm-s390/z90crypt.h
new file mode 100644
index 000000000000..31a2439b07bd
--- /dev/null
+++ b/include/asm-s390/z90crypt.h
@@ -0,0 +1,212 @@
+/*
+ *  include/asm-s390/z90crypt.h
+ *
+ *  z90crypt 1.3.3 (user-visible header)
+ *
+ *  Copyright (C)  2001, 2005 IBM Corporation
+ *  Author(s): Robert Burroughs
+ *             Eric Rossman (edrossma@us.ibm.com)
+ *
+ *  Hotplug & misc device support: Jochen Roehrig (roehrig@de.ibm.com)
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2, or (at your option)
+ * any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
+ */
+
+#ifndef __ASM_S390_Z90CRYPT_H
+#define __ASM_S390_Z90CRYPT_H
+#include <linux/ioctl.h>
+
+#define z90crypt_VERSION 1
+#define z90crypt_RELEASE 3      // 2 = PCIXCC, 3 = rewrite for coding standards
+#define z90crypt_VARIANT 3      // 3 = CEX2A support
+
+/**
+ * struct ica_rsa_modexpo
+ *
+ * Requirements:
+ * - outputdatalength is at least as large as inputdatalength.
+ * - All key parts are right justified in their fields, padded on
+ *   the left with zeroes.
+ * - length(b_key) = inputdatalength
+ * - length(n_modulus) = inputdatalength
+ */
+struct ica_rsa_modexpo {
+        char __user *   inputdata;
+        unsigned int    inputdatalength;
+        char __user *   outputdata;
+        unsigned int    outputdatalength;
+        char __user *   b_key;
+        char __user *   n_modulus;
+};
+
+/**
+ * struct ica_rsa_modexpo_crt
+ *
+ * Requirements:
+ * - inputdatalength is even.
+ * - outputdatalength is at least as large as inputdatalength.
+ * - All key parts are right justified in their fields, padded on
+ *   the left with zeroes.
+ * - length(bp_key)     = inputdatalength/2 + 8
+ * - length(bq_key)     = inputdatalength/2
+ * - length(np_key)     = inputdatalength/2 + 8
+ * - length(nq_key)     = inputdatalength/2
+ * - length(u_mult_inv) = inputdatalength/2 + 8
+ */
+struct ica_rsa_modexpo_crt {
+        char __user *   inputdata;
+        unsigned int    inputdatalength;
+        char __user *   outputdata;
+        unsigned int    outputdatalength;
+        char __user *   bp_key;
+        char __user *   bq_key;
+        char __user *   np_prime;
+        char __user *   nq_prime;
+        char __user *   u_mult_inv;
+};
+
+#define Z90_IOCTL_MAGIC 'z'  // NOTE:  Need to allocate from linux folks
+
+/**
+ * Interface notes:
+ *
+ * The ioctl()s which are implemented (along with relevant details)
+ * are:
+ *
+ *   ICARSAMODEXPO
+ *     Perform an RSA operation using a Modulus-Exponent pair
+ *     This takes an ica_rsa_modexpo struct as its arg.
+ *
+ *     NOTE: please refer to the comments preceding this structure
+ *           for the implementation details for the contents of the
+ *           block
+ *
+ *   ICARSACRT
+ *     Perform an RSA operation using a Chinese-Remainder Theorem key
+ *     This takes an ica_rsa_modexpo_crt struct as its arg.
+ *
+ *     NOTE: please refer to the comments preceding this structure
+ *           for the implementation details for the contents of the
+ *           block
+ *
+ *   Z90STAT_TOTALCOUNT
+ *     Return an integer count of all device types together.
+ *
+ *   Z90STAT_PCICACOUNT
+ *     Return an integer count of all PCICAs.
+ *
+ *   Z90STAT_PCICCCOUNT
+ *     Return an integer count of all PCICCs.
+ *
+ *   Z90STAT_PCIXCCMCL2COUNT
+ *     Return an integer count of all MCL2 PCIXCCs.
+ *
+ *   Z90STAT_PCIXCCMCL3COUNT
+ *     Return an integer count of all MCL3 PCIXCCs.
+ *
+ *   Z90STAT_CEX2CCOUNT
+ *     Return an integer count of all CEX2Cs.
+ *
+ *   Z90STAT_CEX2ACOUNT
+ *     Return an integer count of all CEX2As.
+ *
+ *   Z90STAT_REQUESTQ_COUNT
+ *     Return an integer count of the number of entries waiting to be
+ *     sent to a device.
+ *
+ *   Z90STAT_PENDINGQ_COUNT
+ *     Return an integer count of the number of entries sent to a
+ *     device awaiting the reply.
+ *
+ *   Z90STAT_TOTALOPEN_COUNT
+ *     Return an integer count of the number of open file handles.
+ *
+ *   Z90STAT_DOMAIN_INDEX
+ *     Return the integer value of the Cryptographic Domain.
+ *
+ *   Z90STAT_STATUS_MASK
+ *     Return an 64 element array of unsigned chars for the status of
+ *     all devices.
+ *       0x01: PCICA
+ *       0x02: PCICC
+ *       0x03: PCIXCC_MCL2
+ *       0x04: PCIXCC_MCL3
+ *       0x05: CEX2C
+ *       0x06: CEX2A
+ *       0x0d: device is disabled via the proc filesystem
+ *
+ *   Z90STAT_QDEPTH_MASK
+ *     Return an 64 element array of unsigned chars for the queue
+ *     depth of all devices.
+ *
+ *   Z90STAT_PERDEV_REQCNT
+ *     Return an 64 element array of unsigned integers for the number
+ *     of successfully completed requests per device since the device
+ *     was detected and made available.
+ *
+ *   ICAZ90STATUS (deprecated)
+ *     Return some device driver status in a ica_z90_status struct
+ *     This takes an ica_z90_status struct as its arg.
+ *
+ *     NOTE: this ioctl() is deprecated, and has been replaced with
+ *           single ioctl()s for each type of status being requested
+ *
+ *   Z90STAT_PCIXCCCOUNT (deprecated)
+ *     Return an integer count of all PCIXCCs (MCL2 + MCL3).
+ *     This is DEPRECATED now that MCL3 PCIXCCs are treated differently from
+ *     MCL2 PCIXCCs.
+ *
+ *   Z90QUIESCE (not recommended)
+ *     Quiesce the driver.  This is intended to stop all new
+ *     requests from being processed.  Its use is NOT recommended,
+ *     except in circumstances where there is no other way to stop
+ *     callers from accessing the driver.  Its original use was to
+ *     allow the driver to be "drained" of work in preparation for
+ *     a system shutdown.
+ *
+ *     NOTE: once issued, this ban on new work cannot be undone
+ *           except by unloading and reloading the driver.
+ */
+
+/**
+ * Supported ioctl calls
+ */
+#define ICARSAMODEXPO   _IOC(_IOC_READ|_IOC_WRITE, Z90_IOCTL_MAGIC, 0x05, 0)
+#define ICARSACRT       _IOC(_IOC_READ|_IOC_WRITE, Z90_IOCTL_MAGIC, 0x06, 0)
+
+/* DEPRECATED status calls (bound for removal at some point) */
+#define ICAZ90STATUS    _IOR(Z90_IOCTL_MAGIC, 0x10, struct ica_z90_status)
+#define Z90STAT_PCIXCCCOUNT     _IOR(Z90_IOCTL_MAGIC, 0x43, int)
+
+/* unrelated to ICA callers */
+#define Z90QUIESCE      _IO(Z90_IOCTL_MAGIC, 0x11)
+
+/* New status calls */
+#define Z90STAT_TOTALCOUNT      _IOR(Z90_IOCTL_MAGIC, 0x40, int)
+#define Z90STAT_PCICACOUNT      _IOR(Z90_IOCTL_MAGIC, 0x41, int)
+#define Z90STAT_PCICCCOUNT      _IOR(Z90_IOCTL_MAGIC, 0x42, int)
+#define Z90STAT_PCIXCCMCL2COUNT _IOR(Z90_IOCTL_MAGIC, 0x4b, int)
+#define Z90STAT_PCIXCCMCL3COUNT _IOR(Z90_IOCTL_MAGIC, 0x4c, int)
+#define Z90STAT_CEX2CCOUNT      _IOR(Z90_IOCTL_MAGIC, 0x4d, int)
+#define Z90STAT_CEX2ACOUNT      _IOR(Z90_IOCTL_MAGIC, 0x4e, int)
+#define Z90STAT_REQUESTQ_COUNT  _IOR(Z90_IOCTL_MAGIC, 0x44, int)
+#define Z90STAT_PENDINGQ_COUNT  _IOR(Z90_IOCTL_MAGIC, 0x45, int)
+#define Z90STAT_TOTALOPEN_COUNT _IOR(Z90_IOCTL_MAGIC, 0x46, int)
+#define Z90STAT_DOMAIN_INDEX    _IOR(Z90_IOCTL_MAGIC, 0x47, int)
+#define Z90STAT_STATUS_MASK     _IOR(Z90_IOCTL_MAGIC, 0x48, char[64])
+#define Z90STAT_QDEPTH_MASK     _IOR(Z90_IOCTL_MAGIC, 0x49, char[64])
+#define Z90STAT_PERDEV_REQCNT   _IOR(Z90_IOCTL_MAGIC, 0x4a, int[64])
+
+#endif /* __ASM_S390_Z90CRYPT_H */