drivers/s390/crypto/zcrypt_pcixcc.c - kernel/msm-4.19 - Gitiles

 /*
  *  zcrypt 2.1.0
  *
  *  Copyright IBM Corp. 2001, 2012
  *  Author(s): Robert Burroughs
  *	       Eric Rossman (edrossma@us.ibm.com)
  *
  *  Hotplug & misc device support: Jochen Roehrig (roehrig@de.ibm.com)
  *  Major cleanup & driver split: Martin Schwidefsky <schwidefsky@de.ibm.com>
  *				  Ralph Wuerthner <rwuerthn@de.ibm.com>
  *  MSGTYPE restruct:		  Holger Dengler <hd@linux.vnet.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.
  */

 #include <linux/module.h>
 #include <linux/init.h>
 #include <linux/err.h>
 #include <linux/delay.h>
 #include <linux/slab.h>
 #include <linux/atomic.h>
 #include <asm/uaccess.h>

 #include "ap_bus.h"
 #include "zcrypt_api.h"
 #include "zcrypt_error.h"
 #include "zcrypt_msgtype6.h"
 #include "zcrypt_pcixcc.h"
 #include "zcrypt_cca_key.h"
 #include "zcrypt_msgtype6.h"

 #define PCIXCC_MIN_MOD_SIZE	 16	/*  128 bits	*/
 #define PCIXCC_MIN_MOD_SIZE_OLD	 64	/*  512 bits	*/
 #define PCIXCC_MAX_MOD_SIZE	256	/* 2048 bits	*/
 #define CEX3C_MIN_MOD_SIZE	PCIXCC_MIN_MOD_SIZE
 #define CEX3C_MAX_MOD_SIZE	512	/* 4096 bits	*/

 #define PCIXCC_MCL2_SPEED_RATING	7870
 #define PCIXCC_MCL3_SPEED_RATING	7870
 #define CEX2C_SPEED_RATING		7000
 #define CEX3C_SPEED_RATING		6500

 #define PCIXCC_MAX_ICA_MESSAGE_SIZE 0x77c  /* max size type6 v2 crt message */
 #define PCIXCC_MAX_ICA_RESPONSE_SIZE 0x77c /* max size type86 v2 reply	    */

 #define PCIXCC_MAX_XCRB_MESSAGE_SIZE (12*1024)

 #define PCIXCC_CLEANUP_TIME	(15*HZ)

 #define CEIL4(x) ((((x)+3)/4)*4)

 struct response_type {
 	struct completion work;
 	int type;
 };
 #define PCIXCC_RESPONSE_TYPE_ICA  0
 #define PCIXCC_RESPONSE_TYPE_XCRB 1

 static struct ap_device_id zcrypt_pcixcc_ids[] = {
 	{ AP_DEVICE(AP_DEVICE_TYPE_PCIXCC) },
 	{ AP_DEVICE(AP_DEVICE_TYPE_CEX2C) },
 	{ AP_DEVICE(AP_DEVICE_TYPE_CEX3C) },
 	{ /* end of list */ },
 };

 MODULE_DEVICE_TABLE(ap, zcrypt_pcixcc_ids);
 MODULE_AUTHOR("IBM Corporation");
 MODULE_DESCRIPTION("PCIXCC Cryptographic Coprocessor device driver, " \
 		   "Copyright IBM Corp. 2001, 2012");
 MODULE_LICENSE("GPL");

 static int zcrypt_pcixcc_probe(struct ap_device *ap_dev);
 static void zcrypt_pcixcc_remove(struct ap_device *ap_dev);

 static struct ap_driver zcrypt_pcixcc_driver = {
 	.probe = zcrypt_pcixcc_probe,
 	.remove = zcrypt_pcixcc_remove,
 	.ids = zcrypt_pcixcc_ids,
 	.request_timeout = PCIXCC_CLEANUP_TIME,
 };

 /**
  * Micro-code detection function. Its sends a message to a pcixcc card
  * to find out the microcode level.
  * @ap_dev: pointer to the AP device.
  */
 static int zcrypt_pcixcc_mcl(struct ap_device *ap_dev)
 {
 	static unsigned char msg[] = {
 		0x00,0x06,0x00,0x00,0x00,0x00,0x00,0x00,
 		0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
 		0x00,0x00,0x00,0x58,0x00,0x00,0x00,0x00,
 		0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
 		0x43,0x41,0x00,0x00,0x00,0x00,0x00,0x00,
 		0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
 		0x00,0x00,0x00,0x00,0x50,0x4B,0x00,0x00,
 		0x00,0x00,0x01,0xC4,0x00,0x00,0x00,0x00,
 		0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
 		0x00,0x00,0x07,0x24,0x00,0x00,0x00,0x00,
 		0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
 		0x00,0xDC,0x02,0x00,0x00,0x00,0x54,0x32,
 		0x00,0x00,0x00,0x00,0x00,0x00,0x00,0xE8,
 		0x00,0x00,0x00,0x00,0x00,0x00,0x07,0x24,
 		0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
 		0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
 		0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
 		0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
 		0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
 		0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
 		0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
 		0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
 		0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
 		0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
 		0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
 		0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
 		0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
 		0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
 		0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
 		0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
 		0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
 		0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
 		0x00,0x00,0x00,0x04,0x00,0x00,0x00,0x00,
 		0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
 		0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
 		0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
 		0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
 		0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
 		0x00,0x00,0x00,0x00,0x50,0x4B,0x00,0x0A,
 		0x4D,0x52,0x50,0x20,0x20,0x20,0x20,0x20,
 		0x00,0x42,0x00,0x01,0x02,0x03,0x04,0x05,
 		0x06,0x07,0x08,0x09,0x0A,0x0B,0x0C,0x0D,
 		0x0E,0x0F,0x00,0x11,0x22,0x33,0x44,0x55,
 		0x66,0x77,0x88,0x99,0xAA,0xBB,0xCC,0xDD,
 		0xEE,0xFF,0xFF,0xEE,0xDD,0xCC,0xBB,0xAA,
 		0x99,0x88,0x77,0x66,0x55,0x44,0x33,0x22,
 		0x11,0x00,0x01,0x23,0x45,0x67,0x89,0xAB,
 		0xCD,0xEF,0xFE,0xDC,0xBA,0x98,0x76,0x54,
 		0x32,0x10,0x00,0x9A,0x00,0x98,0x00,0x00,
 		0x1E,0x00,0x00,0x94,0x00,0x00,0x00,0x00,
 		0x04,0x00,0x00,0x8C,0x00,0x00,0x00,0x40,
 		0x02,0x00,0x00,0x40,0xBA,0xE8,0x23,0x3C,
 		0x75,0xF3,0x91,0x61,0xD6,0x73,0x39,0xCF,
 		0x7B,0x6D,0x8E,0x61,0x97,0x63,0x9E,0xD9,
 		0x60,0x55,0xD6,0xC7,0xEF,0xF8,0x1E,0x63,
 		0x95,0x17,0xCC,0x28,0x45,0x60,0x11,0xC5,
 		0xC4,0x4E,0x66,0xC6,0xE6,0xC3,0xDE,0x8A,
 		0x19,0x30,0xCF,0x0E,0xD7,0xAA,0xDB,0x01,
 		0xD8,0x00,0xBB,0x8F,0x39,0x9F,0x64,0x28,
 		0xF5,0x7A,0x77,0x49,0xCC,0x6B,0xA3,0x91,
 		0x97,0x70,0xE7,0x60,0x1E,0x39,0xE1,0xE5,
 		0x33,0xE1,0x15,0x63,0x69,0x08,0x80,0x4C,
 		0x67,0xC4,0x41,0x8F,0x48,0xDF,0x26,0x98,
 		0xF1,0xD5,0x8D,0x88,0xD9,0x6A,0xA4,0x96,
 		0xC5,0x84,0xD9,0x30,0x49,0x67,0x7D,0x19,
 		0xB1,0xB3,0x45,0x4D,0xB2,0x53,0x9A,0x47,
 		0x3C,0x7C,0x55,0xBF,0xCC,0x85,0x00,0x36,
 		0xF1,0x3D,0x93,0x53
 	};
 	unsigned long long psmid;
 	struct CPRBX *cprbx;
 	char *reply;
 	int rc, i;

 	reply = (void *) get_zeroed_page(GFP_KERNEL);
 	if (!reply)
 		return -ENOMEM;

 	rc = ap_send(ap_dev->qid, 0x0102030405060708ULL, msg, sizeof(msg));
 	if (rc)
 		goto out_free;

 	/* Wait for the test message to complete. */
 	for (i = 0; i < 6; i++) {
 		mdelay(300);
 		rc = ap_recv(ap_dev->qid, &psmid, reply, 4096);
 		if (rc == 0 && psmid == 0x0102030405060708ULL)
 			break;
 	}

 	if (i >= 6) {
 		/* Got no answer. */
 		rc = -ENODEV;
 		goto out_free;
 	}

 	cprbx = (struct CPRBX *) (reply + 48);
 	if (cprbx->ccp_rtcode == 8 && cprbx->ccp_rscode == 33)
 		rc = ZCRYPT_PCIXCC_MCL2;
 	else
 		rc = ZCRYPT_PCIXCC_MCL3;
 out_free:
 	free_page((unsigned long) reply);
 	return rc;
 }

 /**
  * Large random number detection function. Its sends a message to a pcixcc
  * card to find out if large random numbers are supported.
  * @ap_dev: pointer to the AP device.
  *
  * Returns 1 if large random numbers are supported, 0 if not and < 0 on error.
  */
 static int zcrypt_pcixcc_rng_supported(struct ap_device *ap_dev)
 {
 	struct ap_message ap_msg;
 	unsigned long long psmid;
 	struct {
 		struct type86_hdr hdr;
 		struct type86_fmt2_ext fmt2;
 		struct CPRBX cprbx;
 	} __attribute__((packed)) *reply;
 	int rc, i;

 	ap_init_message(&ap_msg);
 	ap_msg.message = (void *) get_zeroed_page(GFP_KERNEL);
 	if (!ap_msg.message)
 		return -ENOMEM;

 	rng_type6CPRB_msgX(ap_dev, &ap_msg, 4);
 	rc = ap_send(ap_dev->qid, 0x0102030405060708ULL, ap_msg.message,
 		     ap_msg.length);
 	if (rc)
 		goto out_free;

 	/* Wait for the test message to complete. */
 	for (i = 0; i < 2 * HZ; i++) {
 		msleep(1000 / HZ);
 		rc = ap_recv(ap_dev->qid, &psmid, ap_msg.message, 4096);
 		if (rc == 0 && psmid == 0x0102030405060708ULL)
 			break;
 	}

 	if (i >= 2 * HZ) {
 		/* Got no answer. */
 		rc = -ENODEV;
 		goto out_free;
 	}

 	reply = ap_msg.message;
 	if (reply->cprbx.ccp_rtcode == 0 && reply->cprbx.ccp_rscode == 0)
 		rc = 1;
 	else
 		rc = 0;
 out_free:
 	free_page((unsigned long) ap_msg.message);
 	return rc;
 }

 /**
  * Probe function for PCIXCC/CEX2C cards. It always accepts the AP device
  * since the bus_match already checked the hardware type. The PCIXCC
  * cards come in two flavours: micro code level 2 and micro code level 3.
  * This is checked by sending a test message to the device.
  * @ap_dev: pointer to the AP device.
  */
 static int zcrypt_pcixcc_probe(struct ap_device *ap_dev)
 {
 	struct zcrypt_device *zdev;
 	int rc = 0;

 	zdev = zcrypt_device_alloc(PCIXCC_MAX_XCRB_MESSAGE_SIZE);
 	if (!zdev)
 		return -ENOMEM;
 	zdev->ap_dev = ap_dev;
 	zdev->online = 1;
 	switch (ap_dev->device_type) {
 	case AP_DEVICE_TYPE_PCIXCC:
 		rc = zcrypt_pcixcc_mcl(ap_dev);
 		if (rc < 0) {
 			zcrypt_device_free(zdev);
 			return rc;
 		}
 		zdev->user_space_type = rc;
 		if (rc == ZCRYPT_PCIXCC_MCL2) {
 			zdev->type_string = "PCIXCC_MCL2";
 			zdev->speed_rating = PCIXCC_MCL2_SPEED_RATING;
 			zdev->min_mod_size = PCIXCC_MIN_MOD_SIZE_OLD;
 			zdev->max_mod_size = PCIXCC_MAX_MOD_SIZE;
 			zdev->max_exp_bit_length = PCIXCC_MAX_MOD_SIZE;
 		} else {
 			zdev->type_string = "PCIXCC_MCL3";
 			zdev->speed_rating = PCIXCC_MCL3_SPEED_RATING;
 			zdev->min_mod_size = PCIXCC_MIN_MOD_SIZE;
 			zdev->max_mod_size = PCIXCC_MAX_MOD_SIZE;
 			zdev->max_exp_bit_length = PCIXCC_MAX_MOD_SIZE;
 		}
 		break;
 	case AP_DEVICE_TYPE_CEX2C:
 		zdev->user_space_type = ZCRYPT_CEX2C;
 		zdev->type_string = "CEX2C";
 		zdev->speed_rating = CEX2C_SPEED_RATING;
 		zdev->min_mod_size = PCIXCC_MIN_MOD_SIZE;
 		zdev->max_mod_size = PCIXCC_MAX_MOD_SIZE;
 		zdev->max_exp_bit_length = PCIXCC_MAX_MOD_SIZE;
 		break;
 	case AP_DEVICE_TYPE_CEX3C:
 		zdev->user_space_type = ZCRYPT_CEX3C;
 		zdev->type_string = "CEX3C";
 		zdev->speed_rating = CEX3C_SPEED_RATING;
 		zdev->min_mod_size = CEX3C_MIN_MOD_SIZE;
 		zdev->max_mod_size = CEX3C_MAX_MOD_SIZE;
 		zdev->max_exp_bit_length = CEX3C_MAX_MOD_SIZE;
 		break;
 	default:
 		goto out_free;
 	}

 	rc = zcrypt_pcixcc_rng_supported(ap_dev);
 	if (rc < 0) {
 		zcrypt_device_free(zdev);
 		return rc;
 	}
 	if (rc)
 		zdev->ops = zcrypt_msgtype_request(MSGTYPE06_NAME,
 						   MSGTYPE06_VARIANT_DEFAULT);
 	else
 		zdev->ops = zcrypt_msgtype_request(MSGTYPE06_NAME,
 						   MSGTYPE06_VARIANT_NORNG);
 	ap_dev->reply = &zdev->reply;
 	ap_dev->private = zdev;
 	rc = zcrypt_device_register(zdev);
 	if (rc)
 		goto out_free;
 	return 0;

  out_free:
 	ap_dev->private = NULL;
 	zcrypt_msgtype_release(zdev->ops);
 	zcrypt_device_free(zdev);
 	return rc;
 }

 /**
  * This is called to remove the extended PCIXCC/CEX2C driver information
  * if an AP device is removed.
  */
 static void zcrypt_pcixcc_remove(struct ap_device *ap_dev)
 {
 	struct zcrypt_device *zdev = ap_dev->private;
 	struct zcrypt_ops *zops = zdev->ops;

 	zcrypt_device_unregister(zdev);
 	zcrypt_msgtype_release(zops);
 }

 int __init zcrypt_pcixcc_init(void)
 {
 	return ap_driver_register(&zcrypt_pcixcc_driver, THIS_MODULE, "pcixcc");
 }

 void zcrypt_pcixcc_exit(void)
 {
 	ap_driver_unregister(&zcrypt_pcixcc_driver);
 }

 module_init(zcrypt_pcixcc_init);
 module_exit(zcrypt_pcixcc_exit);
	/*
	* zcrypt 2.1.0
	*
	* Copyright IBM Corp. 2001, 2012
	* Author(s): Robert Burroughs
	* Eric Rossman (edrossma@us.ibm.com)
	*
	* Hotplug & misc device support: Jochen Roehrig (roehrig@de.ibm.com)
	* Major cleanup & driver split: Martin Schwidefsky <schwidefsky@de.ibm.com>
	* Ralph Wuerthner <rwuerthn@de.ibm.com>
	* MSGTYPE restruct: Holger Dengler <hd@linux.vnet.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.
	*/

	#include <linux/module.h>
	#include <linux/init.h>
	#include <linux/err.h>
	#include <linux/delay.h>
	#include <linux/slab.h>
	#include <linux/atomic.h>
	#include <asm/uaccess.h>

	#include "ap_bus.h"
	#include "zcrypt_api.h"
	#include "zcrypt_error.h"
	#include "zcrypt_msgtype6.h"
	#include "zcrypt_pcixcc.h"
	#include "zcrypt_cca_key.h"
	#include "zcrypt_msgtype6.h"

	#define PCIXCC_MIN_MOD_SIZE 16 /* 128 bits */
	#define PCIXCC_MIN_MOD_SIZE_OLD 64 /* 512 bits */
	#define PCIXCC_MAX_MOD_SIZE 256 /* 2048 bits */
	#define CEX3C_MIN_MOD_SIZE PCIXCC_MIN_MOD_SIZE
	#define CEX3C_MAX_MOD_SIZE 512 /* 4096 bits */

	#define PCIXCC_MCL2_SPEED_RATING 7870
	#define PCIXCC_MCL3_SPEED_RATING 7870
	#define CEX2C_SPEED_RATING 7000
	#define CEX3C_SPEED_RATING 6500

	#define PCIXCC_MAX_ICA_MESSAGE_SIZE 0x77c /* max size type6 v2 crt message */
	#define PCIXCC_MAX_ICA_RESPONSE_SIZE 0x77c /* max size type86 v2 reply */

	#define PCIXCC_MAX_XCRB_MESSAGE_SIZE (12*1024)

	#define PCIXCC_CLEANUP_TIME (15*HZ)

	#define CEIL4(x) ((((x)+3)/4)*4)

	struct response_type {
	struct completion work;
	int type;
	};
	#define PCIXCC_RESPONSE_TYPE_ICA 0
	#define PCIXCC_RESPONSE_TYPE_XCRB 1

	static struct ap_device_id zcrypt_pcixcc_ids[] = {
	{ AP_DEVICE(AP_DEVICE_TYPE_PCIXCC) },
	{ AP_DEVICE(AP_DEVICE_TYPE_CEX2C) },
	{ AP_DEVICE(AP_DEVICE_TYPE_CEX3C) },
	{ /* end of list */ },
	};

	MODULE_DEVICE_TABLE(ap, zcrypt_pcixcc_ids);
	MODULE_AUTHOR("IBM Corporation");
	MODULE_DESCRIPTION("PCIXCC Cryptographic Coprocessor device driver, " \
	"Copyright IBM Corp. 2001, 2012");
	MODULE_LICENSE("GPL");

	static int zcrypt_pcixcc_probe(struct ap_device *ap_dev);
	static void zcrypt_pcixcc_remove(struct ap_device *ap_dev);

	static struct ap_driver zcrypt_pcixcc_driver = {
	.probe = zcrypt_pcixcc_probe,
	.remove = zcrypt_pcixcc_remove,
	.ids = zcrypt_pcixcc_ids,
	.request_timeout = PCIXCC_CLEANUP_TIME,
	};

	/**
	* Micro-code detection function. Its sends a message to a pcixcc card
	* to find out the microcode level.
	* @ap_dev: pointer to the AP device.
	*/
	static int zcrypt_pcixcc_mcl(struct ap_device *ap_dev)
	{
	static unsigned char msg[] = {
	0x00,0x06,0x00,0x00,0x00,0x00,0x00,0x00,
	0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
	0x00,0x00,0x00,0x58,0x00,0x00,0x00,0x00,
	0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
	0x43,0x41,0x00,0x00,0x00,0x00,0x00,0x00,
	0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
	0x00,0x00,0x00,0x00,0x50,0x4B,0x00,0x00,
	0x00,0x00,0x01,0xC4,0x00,0x00,0x00,0x00,
	0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
	0x00,0x00,0x07,0x24,0x00,0x00,0x00,0x00,
	0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
	0x00,0xDC,0x02,0x00,0x00,0x00,0x54,0x32,
	0x00,0x00,0x00,0x00,0x00,0x00,0x00,0xE8,
	0x00,0x00,0x00,0x00,0x00,0x00,0x07,0x24,
	0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
	0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
	0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
	0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
	0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
	0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
	0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
	0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
	0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
	0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
	0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
	0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
	0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
	0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
	0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
	0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
	0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
	0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
	0x00,0x00,0x00,0x04,0x00,0x00,0x00,0x00,
	0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
	0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
	0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
	0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
	0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
	0x00,0x00,0x00,0x00,0x50,0x4B,0x00,0x0A,
	0x4D,0x52,0x50,0x20,0x20,0x20,0x20,0x20,
	0x00,0x42,0x00,0x01,0x02,0x03,0x04,0x05,
	0x06,0x07,0x08,0x09,0x0A,0x0B,0x0C,0x0D,
	0x0E,0x0F,0x00,0x11,0x22,0x33,0x44,0x55,
	0x66,0x77,0x88,0x99,0xAA,0xBB,0xCC,0xDD,
	0xEE,0xFF,0xFF,0xEE,0xDD,0xCC,0xBB,0xAA,
	0x99,0x88,0x77,0x66,0x55,0x44,0x33,0x22,
	0x11,0x00,0x01,0x23,0x45,0x67,0x89,0xAB,
	0xCD,0xEF,0xFE,0xDC,0xBA,0x98,0x76,0x54,
	0x32,0x10,0x00,0x9A,0x00,0x98,0x00,0x00,
	0x1E,0x00,0x00,0x94,0x00,0x00,0x00,0x00,
	0x04,0x00,0x00,0x8C,0x00,0x00,0x00,0x40,
	0x02,0x00,0x00,0x40,0xBA,0xE8,0x23,0x3C,
	0x75,0xF3,0x91,0x61,0xD6,0x73,0x39,0xCF,
	0x7B,0x6D,0x8E,0x61,0x97,0x63,0x9E,0xD9,
	0x60,0x55,0xD6,0xC7,0xEF,0xF8,0x1E,0x63,
	0x95,0x17,0xCC,0x28,0x45,0x60,0x11,0xC5,
	0xC4,0x4E,0x66,0xC6,0xE6,0xC3,0xDE,0x8A,
	0x19,0x30,0xCF,0x0E,0xD7,0xAA,0xDB,0x01,
	0xD8,0x00,0xBB,0x8F,0x39,0x9F,0x64,0x28,
	0xF5,0x7A,0x77,0x49,0xCC,0x6B,0xA3,0x91,
	0x97,0x70,0xE7,0x60,0x1E,0x39,0xE1,0xE5,
	0x33,0xE1,0x15,0x63,0x69,0x08,0x80,0x4C,
	0x67,0xC4,0x41,0x8F,0x48,0xDF,0x26,0x98,
	0xF1,0xD5,0x8D,0x88,0xD9,0x6A,0xA4,0x96,
	0xC5,0x84,0xD9,0x30,0x49,0x67,0x7D,0x19,
	0xB1,0xB3,0x45,0x4D,0xB2,0x53,0x9A,0x47,
	0x3C,0x7C,0x55,0xBF,0xCC,0x85,0x00,0x36,
	0xF1,0x3D,0x93,0x53
	};
	unsigned long long psmid;
	struct CPRBX *cprbx;
	char *reply;
	int rc, i;

	reply = (void *) get_zeroed_page(GFP_KERNEL);
	if (!reply)
	return -ENOMEM;

	rc = ap_send(ap_dev->qid, 0x0102030405060708ULL, msg, sizeof(msg));
	if (rc)
	goto out_free;

	/* Wait for the test message to complete. */
	for (i = 0; i < 6; i++) {
	mdelay(300);
	rc = ap_recv(ap_dev->qid, &psmid, reply, 4096);
	if (rc == 0 && psmid == 0x0102030405060708ULL)
	break;
	}

	if (i >= 6) {
	/* Got no answer. */
	rc = -ENODEV;
	goto out_free;
	}

	cprbx = (struct CPRBX *) (reply + 48);
	if (cprbx->ccp_rtcode == 8 && cprbx->ccp_rscode == 33)
	rc = ZCRYPT_PCIXCC_MCL2;
	else
	rc = ZCRYPT_PCIXCC_MCL3;
	out_free:
	free_page((unsigned long) reply);
	return rc;
	}

	/**
	* Large random number detection function. Its sends a message to a pcixcc
	* card to find out if large random numbers are supported.
	* @ap_dev: pointer to the AP device.
	*
	* Returns 1 if large random numbers are supported, 0 if not and < 0 on error.
	*/
	static int zcrypt_pcixcc_rng_supported(struct ap_device *ap_dev)
	{
	struct ap_message ap_msg;
	unsigned long long psmid;
	struct {
	struct type86_hdr hdr;
	struct type86_fmt2_ext fmt2;
	struct CPRBX cprbx;
	} __attribute__((packed)) *reply;
	int rc, i;

	ap_init_message(&ap_msg);
	ap_msg.message = (void *) get_zeroed_page(GFP_KERNEL);
	if (!ap_msg.message)
	return -ENOMEM;

	rng_type6CPRB_msgX(ap_dev, &ap_msg, 4);
	rc = ap_send(ap_dev->qid, 0x0102030405060708ULL, ap_msg.message,
	ap_msg.length);
	if (rc)
	goto out_free;

	/* Wait for the test message to complete. */
	for (i = 0; i < 2 * HZ; i++) {
	msleep(1000 / HZ);
	rc = ap_recv(ap_dev->qid, &psmid, ap_msg.message, 4096);
	if (rc == 0 && psmid == 0x0102030405060708ULL)
	break;
	}

	if (i >= 2 * HZ) {
	/* Got no answer. */
	rc = -ENODEV;
	goto out_free;
	}

	reply = ap_msg.message;
	if (reply->cprbx.ccp_rtcode == 0 && reply->cprbx.ccp_rscode == 0)
	rc = 1;
	else
	rc = 0;
	out_free:
	free_page((unsigned long) ap_msg.message);
	return rc;
	}

	/**
	* Probe function for PCIXCC/CEX2C cards. It always accepts the AP device
	* since the bus_match already checked the hardware type. The PCIXCC
	* cards come in two flavours: micro code level 2 and micro code level 3.
	* This is checked by sending a test message to the device.
	* @ap_dev: pointer to the AP device.
	*/
	static int zcrypt_pcixcc_probe(struct ap_device *ap_dev)
	{
	struct zcrypt_device *zdev;
	int rc = 0;

	zdev = zcrypt_device_alloc(PCIXCC_MAX_XCRB_MESSAGE_SIZE);
	if (!zdev)
	return -ENOMEM;
	zdev->ap_dev = ap_dev;
	zdev->online = 1;
	switch (ap_dev->device_type) {
	case AP_DEVICE_TYPE_PCIXCC:
	rc = zcrypt_pcixcc_mcl(ap_dev);
	if (rc < 0) {
	zcrypt_device_free(zdev);
	return rc;
	}
	zdev->user_space_type = rc;
	if (rc == ZCRYPT_PCIXCC_MCL2) {
	zdev->type_string = "PCIXCC_MCL2";
	zdev->speed_rating = PCIXCC_MCL2_SPEED_RATING;
	zdev->min_mod_size = PCIXCC_MIN_MOD_SIZE_OLD;
	zdev->max_mod_size = PCIXCC_MAX_MOD_SIZE;
	zdev->max_exp_bit_length = PCIXCC_MAX_MOD_SIZE;
	} else {
	zdev->type_string = "PCIXCC_MCL3";
	zdev->speed_rating = PCIXCC_MCL3_SPEED_RATING;
	zdev->min_mod_size = PCIXCC_MIN_MOD_SIZE;
	zdev->max_mod_size = PCIXCC_MAX_MOD_SIZE;
	zdev->max_exp_bit_length = PCIXCC_MAX_MOD_SIZE;
	}
	break;
	case AP_DEVICE_TYPE_CEX2C:
	zdev->user_space_type = ZCRYPT_CEX2C;
	zdev->type_string = "CEX2C";
	zdev->speed_rating = CEX2C_SPEED_RATING;
	zdev->min_mod_size = PCIXCC_MIN_MOD_SIZE;
	zdev->max_mod_size = PCIXCC_MAX_MOD_SIZE;
	zdev->max_exp_bit_length = PCIXCC_MAX_MOD_SIZE;
	break;
	case AP_DEVICE_TYPE_CEX3C:
	zdev->user_space_type = ZCRYPT_CEX3C;
	zdev->type_string = "CEX3C";
	zdev->speed_rating = CEX3C_SPEED_RATING;
	zdev->min_mod_size = CEX3C_MIN_MOD_SIZE;
	zdev->max_mod_size = CEX3C_MAX_MOD_SIZE;
	zdev->max_exp_bit_length = CEX3C_MAX_MOD_SIZE;
	break;
	default:
	goto out_free;
	}

	rc = zcrypt_pcixcc_rng_supported(ap_dev);
	if (rc < 0) {
	zcrypt_device_free(zdev);
	return rc;
	}
	if (rc)
	zdev->ops = zcrypt_msgtype_request(MSGTYPE06_NAME,
	MSGTYPE06_VARIANT_DEFAULT);
	else
	zdev->ops = zcrypt_msgtype_request(MSGTYPE06_NAME,
	MSGTYPE06_VARIANT_NORNG);
	ap_dev->reply = &zdev->reply;
	ap_dev->private = zdev;
	rc = zcrypt_device_register(zdev);
	if (rc)
	goto out_free;
	return 0;

	out_free:
	ap_dev->private = NULL;
	zcrypt_msgtype_release(zdev->ops);
	zcrypt_device_free(zdev);
	return rc;
	}

	/**
	* This is called to remove the extended PCIXCC/CEX2C driver information
	* if an AP device is removed.
	*/
	static void zcrypt_pcixcc_remove(struct ap_device *ap_dev)
	{
	struct zcrypt_device *zdev = ap_dev->private;
	struct zcrypt_ops *zops = zdev->ops;

	zcrypt_device_unregister(zdev);
	zcrypt_msgtype_release(zops);
	}

	int __init zcrypt_pcixcc_init(void)
	{
	return ap_driver_register(&zcrypt_pcixcc_driver, THIS_MODULE, "pcixcc");
	}

	void zcrypt_pcixcc_exit(void)
	{
	ap_driver_unregister(&zcrypt_pcixcc_driver);
	}

	module_init(zcrypt_pcixcc_init);
	module_exit(zcrypt_pcixcc_exit);