[PATCH] s390: crypto device driver

crypto driver changes:
 - Add support for zero-pad and crypto express II (CEX2C).
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>

drivers/s390/crypto/z90common.h

 /*
  *  linux/drivers/s390/misc/z90common.h
  *
- *  z90crypt 1.3.1
+ *  z90crypt 1.3.2
  *
  *  Copyright (C)  2001, 2004 IBM Corporation
  *  Author(s): Robert Burroughs (burrough@us.ibm.com)
- *	       Eric Rossman (edrossma@us.ibm.com)
+ *             Eric Rossman (edrossma@us.ibm.com)
  *
  *  Hotplug & misc device support: Jochen Roehrig (roehrig@de.ibm.com)
  *
@@ -16,7 +16,7 @@
  *
  * 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
+ * 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
@@ -27,12 +27,13 @@
 #ifndef _Z90COMMON_
 #define _Z90COMMON_
 
-#define VERSION_Z90COMMON_H "$Revision: 1.8 $"
+#define VERSION_Z90COMMON_H "$Revision: 1.15 $"
 
 
 #define RESPBUFFSIZE 256
 #define PCI_FUNC_KEY_DECRYPT 0x5044
 #define PCI_FUNC_KEY_ENCRYPT 0x504B
+extern int ext_bitlens;
 
 enum devstat {
 	DEV_GONE,
@@ -56,6 +57,7 @@ enum hdstat {
 	HD_TSQ_EXCEPTION
 };
 
+#define Z90C_NO_DEVICES		1
 #define Z90C_AMBIGUOUS_DOMAIN	2
 #define Z90C_INCORRECT_DOMAIN	3
 #define ENOTINIT		4
@@ -74,13 +76,13 @@ enum hdstat {
 #define REC_OPERAND_SIZE 9
 #define REC_EVEN_MOD	10
 #define REC_NO_WORK	11
-#define REC_HARDWAR_ERR 12
-#define REC_NO_RESPONSE 13
+#define REC_HARDWAR_ERR	12
+#define REC_NO_RESPONSE	13
 #define REC_RETRY_DEV	14
 #define REC_USER_GONE	15
-#define REC_BAD_MESSAGE 16
-#define REC_INVALID_PAD 17
-#define REC_RELEASED	28
+#define REC_BAD_MESSAGE	16
+#define REC_INVALID_PAD	17
+#define REC_USE_PCICA	18
 
 #define WRONG_DEVICE_TYPE 20
 
@@ -89,18 +91,55 @@ enum hdstat {
 #define TSQ_FATAL_ERROR 34
 #define RSQ_FATAL_ERROR 35
 
-#define PCICA	0
-#define PCICC	1
-#define PCIXCC	2
-#define NILDEV	-1
-#define ANYDEV	-1
+#define Z90CRYPT_NUM_TYPES	5
+#define PCICA		0
+#define PCICC		1
+#define PCIXCC_MCL2	2
+#define PCIXCC_MCL3	3
+#define CEX2C		4
+#define NILDEV		-1
+#define ANYDEV		-1
+#define PCIXCC_UNK	-2
 
 enum hdevice_type {
 	PCICC_HW  = 3,
 	PCICA_HW  = 4,
 	PCIXCC_HW = 5,
 	OTHER_HW  = 6,
-	OTHER2_HW = 7
+	CEX2C_HW  = 7
+};
+
+struct CPRBX {
+	unsigned short cprb_len;
+	unsigned char  cprb_ver_id;
+	unsigned char  pad_000[3];
+	unsigned char  func_id[2];
+	unsigned char  cprb_flags[4];
+	unsigned int   req_parml;
+	unsigned int   req_datal;
+	unsigned int   rpl_msgbl;
+	unsigned int   rpld_parml;
+	unsigned int   rpl_datal;
+	unsigned int   rpld_datal;
+	unsigned int   req_extbl;
+	unsigned char  pad_001[4];
+	unsigned int   rpld_extbl;
+	unsigned char  req_parmb[16];
+	unsigned char  req_datab[16];
+	unsigned char  rpl_parmb[16];
+	unsigned char  rpl_datab[16];
+	unsigned char  req_extb[16];
+	unsigned char  rpl_extb[16];
+	unsigned short ccp_rtcode;
+	unsigned short ccp_rscode;
+	unsigned int   mac_data_len;
+	unsigned char  logon_id[8];
+	unsigned char  mac_value[8];
+	unsigned char  mac_content_flgs;
+	unsigned char  pad_002;
+	unsigned short domain;
+	unsigned char  pad_003[12];
+	unsigned char  pad_004[36];
 };
 
 #ifndef DEV_NAME

drivers/s390/crypto/z90crypt.h

 /*
  *  linux/drivers/s390/misc/z90crypt.h
  *
- *  z90crypt 1.3.1
+ *  z90crypt 1.3.2
  *
  *  Copyright (C)  2001, 2004 IBM Corporation
  *  Author(s): Robert Burroughs (burrough@us.ibm.com)
- *	       Eric Rossman (edrossma@us.ibm.com)
+ *             Eric Rossman (edrossma@us.ibm.com)
  *
  *  Hotplug & misc device support: Jochen Roehrig (roehrig@de.ibm.com)
  *
@@ -16,7 +16,7 @@
  *
  * 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
+ * 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
@@ -29,11 +29,20 @@
 
 #include <linux/ioctl.h>
 
-#define VERSION_Z90CRYPT_H "$Revision: 1.2 $"
+#define VERSION_Z90CRYPT_H "$Revision: 1.10 $"
 
 #define z90crypt_VERSION 1
 #define z90crypt_RELEASE 3	// 2 = PCIXCC, 3 = rewrite for coding standards
-#define z90crypt_VARIANT 1
+#define z90crypt_VARIANT 2	// 2 = added PCIXCC MCL3 and CEX2C support
+
+/**
+ * If we are not using the sparse checker, __user has no use.
+ */
+#ifdef __CHECKER__
+# define __user		__attribute__((noderef, address_space(1)))
+#else
+# define __user
+#endif
 
 /**
  * struct ica_rsa_modexpo
@@ -93,16 +102,16 @@ struct ica_rsa_modexpo_crt {
  *     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
+ *           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
+ *           for the implementation details for the contents of the
+ *           block
  *
  *   Z90STAT_TOTALCOUNT
  *     Return an integer count of all device types together.
@@ -113,8 +122,14 @@ struct ica_rsa_modexpo_crt {
  *   Z90STAT_PCICCCOUNT
  *     Return an integer count of all PCICCs.
  *
- *   Z90STAT_PCIXCCCOUNT
- *     Return an integer count of all PCIXCCs.
+ *   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_REQUESTQ_COUNT
  *     Return an integer count of the number of entries waiting to be
@@ -133,10 +148,12 @@ struct ica_rsa_modexpo_crt {
  *   Z90STAT_STATUS_MASK
  *     Return an 64 element array of unsigned chars for the status of
  *     all devices.
- *	 0x01: PCICA
- *	 0x02: PCICC
- *	 0x03: PCIXCC
- *	 0x0d: device is disabled via the proc filesystem
+ *       0x01: PCICA
+ *       0x02: PCICC
+ *       0x03: PCIXCC_MCL2
+ *       0x04: PCIXCC_MCL3
+ *       0x05: CEX2C
+ *       0x0d: device is disabled via the proc filesystem
  *
  *   Z90STAT_QDEPTH_MASK
  *     Return an 64 element array of unsigned chars for the queue
@@ -152,18 +169,23 @@ struct ica_rsa_modexpo_crt {
  *     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
+ *           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,
+ *     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.
+ *           except by unloading and reloading the driver.
  */
 
 /**
@@ -172,8 +194,9 @@ struct ica_rsa_modexpo_crt {
 #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 call (bound for removal SOON) */
+/* 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)
@@ -182,7 +205,9 @@ struct ica_rsa_modexpo_crt {
 #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_PCIXCCCOUNT	_IOR(Z90_IOCTL_MAGIC, 0x43, 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_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)
@@ -199,8 +224,9 @@ struct ica_rsa_modexpo_crt {
 #define ERELEASED 131	// user released while ioctl pending
 #define EQUIESCE  132	// z90crypt quiescing (no more work allowed)
 #define ETIMEOUT  133	// request timed out
-#define EUNKNOWN  134	// some unrecognized error occured
-#define EGETBUFF  135	// Error getting buffer
+#define EUNKNOWN  134	// some unrecognized error occured (retry may succeed)
+#define EGETBUFF  135	// Error getting buffer or hardware lacks capability
+			// (retry in software)
 
 /**
  * DEPRECATED STRUCTURES
@@ -222,7 +248,8 @@ struct ica_z90_status {
 	int pendingqWaitCount;
 	int totalOpenCount;
 	int cryptoDomain;
-	// status: 0=not there. 1=PCICA. 2=PCICC. 3=PCIXCC
+	// status: 0=not there, 1=PCICA, 2=PCICC, 3=PCIXCC_MCL2, 4=PCIXCC_MCL3,
+	//         5=CEX2C
 	unsigned char status[MASK_LENGTH];
 	// qdepth: # work elements waiting for each device
 	unsigned char qdepth[MASK_LENGTH];