[PATCH] tpm: Support for new chip type

[Marcel Selhorst <selhorst@crypto.rub.de>]

Hello LKML,

this patch supports the Infineon Trusted Platform Module SLD 9630 (TPM 1.1b),
which is embedded on Intel-mainboards or in HP/Fujitsu-Siemens/Toshiba-Notebooks.
The module fits the interfaces created by IBM and was patched against the
latest kernel-snapshot 2.6.13-rc1-mm1.
Further information about this module and a list of supported hardware can be
found here: http://www.prosec.rub.de/tpm

Best Regards,
Marcel Selhorst

Signed-off-by: Marcel Selhorst <selhorst@crypto.rub.de>
---

diff -uprN linux-2.6.13-rc1-mm1/drivers/char/tpm/Kconfig linux-2.6.13-rc-mm1-tpm_inf/drivers/char/tpm/Kconfig
--- linux-2.6.13-rc1-mm1/drivers/char/tpm/Kconfig	2005-06-29 23:00:53.000000000 +0000
+++ linux-2.6.13-rc-mm1-tpm_inf/drivers/char/tpm/Kconfig	2005-07-05 10:12:20.000000000 +0000
@@ -35,5 +35,18 @@ config TCG_ATMEL
 	  will be accessible from within Linux.  To compile this driver
 	  as a module, choose M here; the module will be called tpm_atmel.

+config TCG_INFINEON
+	tristate "Infineon Technologies SLD 9630 TPM Interface"
+	depends on TCG_TPM
+	---help---
+	  If you have a TPM security chip from Infineon Technologies
+	  say Yes and it will be accessible from within Linux.  To
+	  compile this driver as a module, choose M here; the module
+	  will be called tpm_infineon.
+	  Further information on this driver and the supported hardware
+	  can be found at http://www.prosec.rub.de/tpm
+	  Note: To get debugging output into the module, you have to enable
+	  CONFIG_DEBUG_KERNEL, CONFIG_DEBUG_INFO and CONFIG_PCI_DEBUG
+
 endmenu

diff -uprN linux-2.6.13-rc1-mm1/drivers/char/tpm/Makefile linux-2.6.13-rc-mm1-tpm_inf/drivers/char/tpm/Makefile
--- linux-2.6.13-rc1-mm1/drivers/char/tpm/Makefile	2005-06-29 23:00:53.000000000 +0000
+++ linux-2.6.13-rc-mm1-tpm_inf/drivers/char/tpm/Makefile	2005-07-05 10:12:20.000000000 +0000
@@ -4,4 +4,5 @@
 obj-$(CONFIG_TCG_TPM) += tpm.o
 obj-$(CONFIG_TCG_NSC) += tpm_nsc.o
 obj-$(CONFIG_TCG_ATMEL) += tpm_atmel.o
+obj-$(CONFIG_TCG_INFINEON) += tpm_infineon.o

diff -uprN linux-2.6.13-rc1-mm1/drivers/char/tpm/tpm_infineon.c linux-2.6.13-rc-mm1-tpm_inf/drivers/char/tpm/tpm_infineon.c
--- linux-2.6.13-rc1-mm1/drivers/char/tpm/tpm_infineon.c	1970-01-01 00:00:00.000000000 +0000
+++ linux-2.6.13-rc-mm1-tpm_inf/drivers/char/tpm/tpm_infineon.c	2005-07-05 14:35:19.000000000 +0000
@@ -0,0 +1,488 @@
+/*
+ * Copyright (C) 2005
+ * Marcel Selhorst <selhorst@crypto.rub.de>
+ * Applied Data Security Group
+ * Ruhr-University Bochum, Germany
+ *
+ * Description:
+ * Device Driver for the Infineon Technologies
+ * SLD 9630 TT Trusted Platform Module
+ * Specifications at www.trustedcomputinggroup.org	
+ *
+ * Project-Homepage:
+ * http://www.prosec.rub.de/tpm
+ *
+ * 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, version 2 of the
+ * License.
+ *
+ */
+
+#include "tpm.h"
+
+/* Infineon Specific Delay Definitions */
+enum tpm_delay_stuff {
+	TPM_MAX_WTX_PACKAGES	= 50,	/* Sets the maximum number of WTX-Packages */
+	TPM_WTX_MSLEEP_TIME	= 20,	/* Sets the msleep-Time for WTX-Packages */
+	TPM_MSLEEP_TIME		= 3,	/* msleep-Time --> Interval to check status register */
+	TPM_MAX_TRIES		= 5000 	/* gives number of max. msleep()-calls before
+throwing timeout */
+};
+
+/* Infineon Specific TPM Data */
+enum tpm_infineon_specific {
+	TCPA_INFINEON_DEV_VEN_VALUE	= 0x15D1,
+	TPM_DATA			= (TPM_ADDR+1) & 0xff
+};
+
+/* TPM Header stuff */
+enum tpm_infineon_header {
+	TPM_VL_VER			= 0x01,
+	TPM_VL_CHANNEL_CONTROL		= 0x07,
+	TPM_VL_CHANNEL_PERSONALISATION 	= 0x0A,
+	TPM_VL_CHANNEL_TPM		= 0x0B,
+	TPM_VL_CONTROL			= 0x00,
+	TPM_INF_NAK			= 0x15,
+	TPM_CTRL_WTX			= 0x10,
+	TPM_CTRL_WTX_ABORT		= 0x18,
+	TPM_CTRL_WTX_ABORT_ACK		= 0x18,
+	TPM_CTRL_ERROR			= 0x20,
+	TPM_CTRL_CHAININGACK		= 0x40,
+	TPM_CTRL_CHAINING		= 0x80,
+	TPM_CTRL_DATA			= 0x04,
+	TPM_CTRL_DATA_CHA		= 0x84,
+	TPM_CTRL_DATA_CHA_ACK		= 0xC4
+};
+
+/* Register */
+enum tpm_register {
+	WRFIFO	= 0x00,
+	RDFIFO	= 0x01,
+	STAT	= 0x02,
+	CMD	= 0x03
+};
+
+/* Command Bits */
+enum tpm_command_bits {
+	CMD_DIS		= 0x00,
+	CMD_LP		= 0x01,
+	CMD_RES		= 0x02,
+	CMD_IRQC	= 0x06
+};
+
+/* Status Bits */
+enum tpm_status_bits {
+	STAT_XFE 	= 0x00,
+	STAT_LPA 	= 0x01,
+	STAT_FOK 	= 0x02,
+	STAT_TOK 	= 0x03,
+	STAT_IRQA 	= 0x06,
+	STAT_RDA 	= 0x07
+};
+
+/* Some outgoing values */
+enum infineon_tpm_values {
+	CHIP_ID1		= 0x20,
+	CHIP_ID2		= 0x21,
+	DAR			= 0x30,
+	RESET_LP_IRQC_DISABLE	= 0x41,
+	ENABLE_REGISTER_PAIR	= 0x55,
+	IOLIMH			= 0x60,
+	IOLIML			= 0x61,
+	DISABLE_REGISTER_PAIR	= 0xAA,
+	IDVENL			= 0xF1,
+	IDVENH			= 0xF2,
+	IDPDL			= 0xF3,
+	IDPDH			= 0xF4
+};
+
+/* Global variable to count the Waiting-Time-Extensions */
+static int number_of_wtx = 0;	
+
+static int empty_fifo(struct tpm_chip *chip, int clear_wrfifo) {
+	int status;
+	int check=0;
+	int i=0;
+	int j=0;
+	
+	if (clear_wrfifo) {
+	    for (i=0; i<4096; i++) {
+		status = inb(chip->vendor->base+WRFIFO);
+		if (status == 0xff) {
+		    if (check==5)
+			break;
+		    else
+			check++;
+		}
+	    }
+	}
+	/* Note: The Values which are currently in the FIFO of the TPM
+	are thrown away since there is no usage for them. Usually,
+	this has nothing to say, since the TPM will give its answer immidiately
+	or will be aborted anyway, so the data here is usually garbage and useless.
+	We have to clean this, because the next communication with the TPM would
+	be rubbish, if there is still some old data in the Read FIFO.
+	*/
+	i = 0;
+	do {
+	    status = inb(chip->vendor->base+RDFIFO);
+	    status = inb(chip->vendor->base+STAT);
+	    j++;
+	    if (j==TPM_MAX_TRIES)
+		return -EIO;
+	} while ((status & (1<<STAT_RDA)) != 0);
+	return(0);
+}
+
+static int wait(struct tpm_chip *chip, int wait_for_bit) {
+
+  int status;
+  int i = 0;
+  for (i = 0; i < TPM_MAX_TRIES; i++) {		/* Check the TPM_TIMEOUT-Variable in the definitions in Infineon.h */
+      status = inb(chip->vendor->base + STAT);
+      if (status & 1<<wait_for_bit)		/* Check the Status-Register for the XFE-Bit */
+          break;
+      msleep(TPM_MSLEEP_TIME);
+    }
+  if (i == TPM_MAX_TRIES) {			/* In Case of an error, print information */
+      dev_err(&chip->pci_dev->dev,": Timeout in wait(");
+      if (wait_for_bit==STAT_XFE) dev_err(&chip->pci_dev->dev,"STAT_XFE)\n");
+      if (wait_for_bit==STAT_RDA) dev_err(&chip->pci_dev->dev,"STAT_RDA)\n");
+      return -EIO;
+  }
+  return(0);
+};
+
+static void wait_and_send(struct tpm_chip *chip, u8 sendbyte) {
+    wait(chip,STAT_XFE);
+    outb(sendbyte,chip->vendor->base+WRFIFO);
+}
+
+/* Note: WTX means Waiting-Time-Extension. Whenever the TPM
+needs more calculation time, it sends a WTX-package, which has to
+be acknowledged or aborted. This usually occurs if you are hammering
+the TPM with key creation. Set the maximum number of WTX-packages in
+the definitions above, if the number is reached, the Waiting-Time will be denied
+and the TPM command has to be resend.
+*/
+
+static void tpm_wtx(struct tpm_chip *chip) {
+	number_of_wtx++;
+	dev_info(&chip->pci_dev->dev,": Granting WTX (%02d / %02d)\n",number_of_wtx,TPM_MAX_WTX_PACKAGES);
+	wait_and_send(chip,TPM_VL_VER);
+	wait_and_send(chip,TPM_CTRL_WTX);
+	wait_and_send(chip,0x00);
+	wait_and_send(chip,0x00);
+	msleep(TPM_WTX_MSLEEP_TIME);
+}
+
+static void tpm_wtx_abort(struct tpm_chip *chip) {
+	dev_info(&chip->pci_dev->dev,": Sending WTX Abort\n");
+	wait_and_send(chip,TPM_VL_VER);
+	wait_and_send(chip,TPM_CTRL_WTX_ABORT);
+	wait_and_send(chip,0x00);
+	wait_and_send(chip,0x00);
+	number_of_wtx = 0;
+	dev_info(&chip->pci_dev->dev,": Waiting for Abort-Acknowledge\n");
+	msleep(TPM_WTX_MSLEEP_TIME);
+}
+
+static int tpm_inf_recv(struct tpm_chip *chip, u8 *buf, size_t count) {
+	int i;
+	int ret;
+	u32 size = 0;
+
+recv_begin:	
+	/* start reading header */
+	dev_dbg(&chip->pci_dev->dev,": Receiving Header: ");
+
+	for (i=0; i<4 ; i++) {
+	    ret = wait(chip,STAT_RDA);
+		if (ret)
+		    return -EIO;
+		
+	    buf[i]=inb(chip->vendor->base+RDFIFO);
+	    dev_dbg(&chip->pci_dev->dev,"%02x ",buf[i]);
+	}
+	    dev_dbg(&chip->pci_dev->dev,"\n");	
+	
+	if (buf[0] != TPM_VL_VER) {
+	    dev_err(&chip->pci_dev->dev,": Wrong Transport Protol Implementation!\n");
+	    return -EIO;
+	}
+
+	if (buf[1] == TPM_CTRL_DATA) {
+	    /* size of the data received */
+	    size = ((buf[2] << 8) | buf[3]);
+	    dev_dbg(&chip->pci_dev->dev,": Number of Bytes to Copy:  %d (0x%04x)\n",size,size);
+	    dev_dbg(&chip->pci_dev->dev,": Receiving Data-Bytes: ");
+
+	    for (i=0; i<size; i++) {
+		wait(chip,STAT_RDA);
+		buf[i]=inb(chip->vendor->base+RDFIFO);
+		dev_dbg(&chip->pci_dev->dev,"%02x ",buf[i]);
+	    }
+	    dev_dbg(&chip->pci_dev->dev,"\n");
+	
+	    if ((size == 0x6D00) && (buf[1] == 0x80)) {
+		dev_err(&chip->pci_dev->dev,": Error Handling on Vendor-Layer!\n");
+		return -EIO;
+	    }
+	
+	    for (i=0;i<size;i++)
+		buf[i]=buf[i+6];
+
+	    size=size-6;
+	    return (size);
+	}
+	
+	if (buf[1] == TPM_CTRL_WTX) {
+	    dev_info(&chip->pci_dev->dev,": WTX-package received\n");
+	    if (number_of_wtx < TPM_MAX_WTX_PACKAGES) {
+		tpm_wtx(chip);
+		goto recv_begin;
+	    } else {
+	    	tpm_wtx_abort(chip);
+		goto recv_begin;
+	    }
+	}
+	if (buf[1] == TPM_CTRL_WTX_ABORT_ACK) {
+	    dev_info(&chip->pci_dev->dev,": WTX-Abort-Acknowledgement-package received\n");
+		return size;
+	}
+
+	if (buf[1] == TPM_CTRL_ERROR) {
+	    dev_err(&chip->pci_dev->dev,": ERROR-package received:\n");
+	    if (buf[4] == TPM_INF_NAK)
+	        dev_err(&chip->pci_dev->dev,": -> Negative Acknowledgement - Please retransmit commando!\n");
+	    return -EIO;
+	}
+	return -EIO;
+}
+
+static int tpm_inf_send(struct tpm_chip *chip, u8 *buf, size_t count) {
+	int i;
+	int ret;
+	u8 count_high,count_low,count_4,count_3,count_2,count_1;
+	/* Disabling Reset, LP and IRQC */
+	outb(RESET_LP_IRQC_DISABLE,chip->vendor->base+CMD);	
+
+	ret = empty_fifo(chip,1);
+	    if (ret) {
+		dev_err(&chip->pci_dev->dev,"Timeout while clearing FIFOs\n");
+		return -EIO;
+	    }
+
+	ret = wait(chip,STAT_XFE);
+	    if (ret)
+		return -EIO;
+
+	count_4=(count & 0xff000000)>>24;
+	count_3=(count & 0x00ff0000)>>16;
+	count_2=(count & 0x0000ff00)>>8;
+	count_1=(count & 0x000000ff);
+	count_high = ((count+6) & 0xffffff00)>>8;
+	count_low = ((count+6) & 0x000000ff);
+
+	/* Sending Header */
+	dev_dbg(&chip->pci_dev->dev,": Sending Header %02x %02x %02x %02x\n",TPM_VL_VER,TPM_CTRL_DATA,count_high,count_low);
+
+	wait_and_send(chip,TPM_VL_VER);
+	wait_and_send(chip,TPM_CTRL_DATA);
+	wait_and_send(chip,count_high);
+	wait_and_send(chip,count_low);
+	
+	count_high=0;
+	count_low=0;
+
+	count_high = (count & 0xffff0000);
+	count_low = (count & 0x0000ffff);
+
+	/* Sending Data Header */
+	dev_dbg(&chip->pci_dev->dev,": Sending Data   %02x %02x %02x %02x %02x %02x ",TPM_VL_VER,TPM_VL_CHANNEL_TPM,count_4,count_3,count_2,count_1);		
+
+	wait_and_send(chip,TPM_VL_VER);
+	wait_and_send(chip,TPM_VL_CHANNEL_TPM);
+	wait_and_send(chip,count_4);
+	wait_and_send(chip,count_3);
+	wait_and_send(chip,count_2);
+	wait_and_send(chip,count_1);
+
+	for (i = 0; i < count; i++) {
+	    wait_and_send(chip,buf[i]);
+	    dev_dbg(&chip->pci_dev->dev,"%02x ",buf[i]);
+	}
+	dev_dbg(&chip->pci_dev->dev,"\n");
+	dev_dbg(&chip->pci_dev->dev,": Sending Data successful -> %d (0x%04x) from %d (0x%04x) Data-Bytes written\n",count,count,i,i);
+	return count;
+}
+static void tpm_inf_cancel(struct tpm_chip *chip) {
+    /* Nothing yet!
+    This has something to do with the internal functions
+    of the TPM. Abort isn't really necessary...
+    */
+}
+
+static DEVICE_ATTR(pubek, S_IRUGO, tpm_show_pubek, NULL);
+static DEVICE_ATTR(pcrs, S_IRUGO, tpm_show_pcrs, NULL);
+static DEVICE_ATTR(caps, S_IRUGO, tpm_show_caps, NULL);
+static DEVICE_ATTR(cancel, S_IWUSR|S_IWGRP, NULL, tpm_store_cancel);
+
+static struct attribute * inf_attrs[] = {
+	&dev_attr_pubek.attr,
+	&dev_attr_pcrs.attr,
+	&dev_attr_caps.attr,
+	&dev_attr_cancel.attr,
+	0,
+};
+
+static struct attribute_group inf_attr_grp = { .attrs = inf_attrs };
+
+static struct file_operations inf_ops = {
+	.owner = THIS_MODULE,
+	.llseek = no_llseek,
+	.open = tpm_open,
+	.read = tpm_read,
+	.write = tpm_write,
+	.release = tpm_release,
+};
+
+static struct tpm_vendor_specific tpm_inf = {
+	.recv = tpm_inf_recv,
+	.send = tpm_inf_send,
+	.cancel = tpm_inf_cancel,
+	.req_complete_mask = 0,
+	.req_complete_val = 0,
+	.attr_group = &inf_attr_grp,
+	.miscdev = { .fops = &inf_ops, },
+};
+
+int __init tpm_inf_probe(struct pci_dev *pci_dev, const struct pci_device_id *pci_id) {
+
+	int rc = 0;
+	u8 ioh;
+	u8 iol;
+	int vendor[4];
+	int version[2];
+	int status = 0;
+
+	if (pci_enable_device(pci_dev))
+		return -EIO;
+
+	dev_dbg(&pci_dev->dev,": LPC-Bus found at 0x%x\n",pci_id->device);	
+
+	/* query chip for its vendor, its version number a.s.o. */
+
+	outb(ENABLE_REGISTER_PAIR, TPM_ADDR);
+	outb(IDVENL, TPM_ADDR);
+	vendor[1] = inb(TPM_DATA) ;
+	outb(IDVENH, TPM_ADDR);
+	vendor[0] = inb(TPM_DATA) ;
+	outb(IDPDL, TPM_ADDR);
+	vendor[3] = inb(TPM_DATA) ;
+	outb(IDPDH, TPM_ADDR);
+	vendor[2] = inb(TPM_DATA) ;
+	outb(CHIP_ID1, TPM_ADDR);
+	version[1] = inb(TPM_DATA) ;
+	outb(CHIP_ID2, TPM_ADDR);
+	version[0] = inb(TPM_DATA) ;
+
+	if ((vendor[1] == (TCPA_INFINEON_DEV_VEN_VALUE & 0xFF)) && ((vendor[0] << 8) == (TCPA_INFINEON_DEV_VEN_VALUE & 0x00FF << 8))) {
+
+	    /* Read IOPorts from TPM */
+	    outb(IOLIMH, TPM_ADDR);
+	    ioh = inb(TPM_DATA);
+	    dev_dbg(&pci_dev->dev,": Current Values in IOLIMH: %02x\n",ioh);
+	    outb(IOLIML, TPM_ADDR);
+	    iol = inb(TPM_DATA);
+	    dev_dbg(&pci_dev->dev,": Current Values in IOLIML: %02x\n",iol);	
+	    tpm_inf.base = (ioh<<8) | iol;
+	
+	    if (tpm_inf.base == 0) {
+	    dev_err(&pci_dev->dev,": No IO-Ports set!\n");
+	    pci_disable_device(pci_dev);
+	    return -ENODEV;
+	    }
+
+	    /* Activate Register */
+	    outb(DAR,TPM_ADDR);
+	    outb(0x01,TPM_DATA);
+	    outb(DAR,TPM_ADDR);
+	    status = inb (TPM_DATA);
+	    dev_dbg(&pci_dev->dev,": Device Activate Register Status : %x \n",status);
+	    outb(DISABLE_REGISTER_PAIR, TPM_ADDR);
+
+	    /* Disabling reset, LP and IRQC */
+	    outb(RESET_LP_IRQC_DISABLE,tpm_inf.base+CMD);		
+	    dev_dbg(&pci_dev->dev,": Disabling Reset, LP and IRQC\n");
+	    dev_dbg(&pci_dev->dev,": Setting WRFIFO: %04x\n",tpm_inf.base+WRFIFO);
+	    dev_dbg(&pci_dev->dev,": Setting RDFIFO: %04x\n",tpm_inf.base+RDFIFO);
+	    dev_dbg(&pci_dev->dev,": Setting STAT  : %04x\n",tpm_inf.base+STAT);
+	    dev_dbg(&pci_dev->dev,": Setting CMD   : %04x\n",tpm_inf.base+CMD);
+
+	    /* Finally, we're done, print some infos */	
+	    dev_info(&pci_dev->dev,"************************************************\n");
+	    dev_info(&pci_dev->dev,"*    TPM found with IO-Base 0x%x             *\n",tpm_inf.base);
+	    dev_info(&pci_dev->dev,"*    Chip    ID %02x%02x                           *\n",version[0], version[1]);
+	    dev_info(&pci_dev->dev,"*    Vendor  ID %x%x (Infineon)                *\n",vendor[0], vendor[1]);
+	    if ((vendor[2] == 0) && (vendor[3] == 6))
+		dev_info(&pci_dev->dev,"*    Product ID %02x%02x (SLD 9630 TT 1.1)         *\n",vendor[2],vendor[3]);
+	    else
+		dev_info(&pci_dev->dev,"*    Product ID %02x%02x                           *\n",vendor[2],vendor[3]);
+	    dev_info(&pci_dev->dev,"************************************************\n");
+
+	    /* Let's register our hardware */
+	    dev_dbg(&pci_dev->dev,"Registering TPM-Infineon-Driver: %x\n",rc);	
+	    rc = tpm_register_hardware(pci_dev, &tpm_inf);	
+	    if (rc < 0) {
+		pci_disable_device(pci_dev);
+		return -ENODEV;
+	    }
+	    return 0;
+
+	} else {
+	    dev_err(&pci_dev->dev,": No Infineon TPM found! Sorry! \n");
+	    pci_disable_device(pci_dev);
+	    return -ENODEV;
+    }
+}
+
+static struct pci_device_id tpm_pci_tbl [] __devinitdata = {
+        {PCI_DEVICE(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82801BA_0)},
+        {PCI_DEVICE(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82801CA_12)},
+        {PCI_DEVICE(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82801DB_0)},
+        {PCI_DEVICE(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82801DB_12)},
+        {PCI_DEVICE(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82801EB_0)},
+        {PCI_DEVICE(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_ICH6_0)},
+        {PCI_DEVICE(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_ICH6_1)},
+        {PCI_DEVICE(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_ICH6_2)},
+        {0,}
+};
+
+MODULE_DEVICE_TABLE(pci, tpm_pci_tbl);
+
+static struct pci_driver inf_pci_driver = {
+	.name = "tpm_inf",
+	.id_table = tpm_pci_tbl,
+	.probe = tpm_inf_probe,
+	.remove = __devexit_p(tpm_remove),
+	.suspend = tpm_pm_suspend,
+	.resume = tpm_pm_resume,
+};
+
+static int __init init_inf(void) {
+	return pci_register_driver(&inf_pci_driver);
+}
+
+static void __exit cleanup_inf(void) {
+	pci_unregister_driver(&inf_pci_driver);
+}
+
+module_init(init_inf);
+module_exit(cleanup_inf);
+
+MODULE_AUTHOR("Marcel Selhorst (selhorst@crypto.rub.de)");
+MODULE_DESCRIPTION("Infineon TPM Driver");
+MODULE_VERSION("1.4");
+MODULE_LICENSE("GPL");