Commit 000a07b0 authored by Jason Gunthorpe's avatar Jason Gunthorpe Committed by Peter Huewe
Browse files

tpm: Move sysfs functions from tpm-interface to tpm-sysfs 



CLASS-sysfs.c is a common idiom for linux subsystems.

This is the first step to pulling all the sysfs support code from
the drivers into tpm-sysfs. This is a plain text copy from tpm-interface
with support changes to make it compile.

_tpm_pcr_read is made non-static and is called tpm_pcr_read_dev.

Signed-off-by: default avatarJason Gunthorpe <jgunthorpe@obsidianresearch.com>
Signed-off-by: default avatarPeter Huewe <peterhuewe@gmx.de>
parent afdba32e

drivers/char/tpm/Makefile

+1 −1
Original line number Diff line number Diff line
@@ -2,7 +2,7 @@ 
# Makefile for the kernel tpm device drivers.

#

obj-$(CONFIG_TCG_TPM) += tpm.o

tpm-y := tpm-interface.o tpm-dev.o

tpm-y := tpm-interface.o tpm-dev.o tpm-sysfs.o

tpm-$(CONFIG_ACPI) += tpm_ppi.o



ifdef CONFIG_ACPI

drivers/char/tpm/tpm-interface.c

+2 −273
Original line number Diff line number Diff line
@@ -32,13 +32,6 @@ 
#include "tpm.h"

#include "tpm_eventlog.h"



enum tpm_duration {

	TPM_SHORT = 0,

	TPM_MEDIUM = 1,

	TPM_LONG = 2,

	TPM_UNDEFINED,

};



#define TPM_MAX_ORDINAL 243

#define TSC_MAX_ORDINAL 12

#define TPM_PROTECTED_COMMAND 0x00
@@ -405,24 +398,6 @@ out: 
#define TPM_DIGEST_SIZE 20

#define TPM_RET_CODE_IDX 6



enum tpm_capabilities {

	TPM_CAP_FLAG = cpu_to_be32(4),

	TPM_CAP_PROP = cpu_to_be32(5),

	CAP_VERSION_1_1 = cpu_to_be32(0x06),

	CAP_VERSION_1_2 = cpu_to_be32(0x1A)

};



enum tpm_sub_capabilities {

	TPM_CAP_PROP_PCR = cpu_to_be32(0x101),

	TPM_CAP_PROP_MANUFACTURER = cpu_to_be32(0x103),

	TPM_CAP_FLAG_PERM = cpu_to_be32(0x108),

	TPM_CAP_FLAG_VOL = cpu_to_be32(0x109),

	TPM_CAP_PROP_OWNER = cpu_to_be32(0x111),

	TPM_CAP_PROP_TIS_TIMEOUT = cpu_to_be32(0x115),

	TPM_CAP_PROP_TIS_DURATION = cpu_to_be32(0x120),



};



static ssize_t transmit_cmd(struct tpm_chip *chip, struct tpm_cmd_t *cmd,

			    int len, const char *desc)

{
@@ -442,7 +417,6 @@ static ssize_t transmit_cmd(struct tpm_chip *chip, struct tpm_cmd_t *cmd, 
}



#define TPM_INTERNAL_RESULT_SIZE 200

#define TPM_TAG_RQU_COMMAND cpu_to_be16(193)

#define TPM_ORD_GET_CAP cpu_to_be32(101)

#define TPM_ORD_GET_RANDOM cpu_to_be32(70)
@@ -642,70 +616,6 @@ static int tpm_continue_selftest(struct tpm_chip *chip) 
	return rc;

}



ssize_t tpm_show_enabled(struct device *dev, struct device_attribute *attr,

			char *buf)

{

	cap_t cap;

	ssize_t rc;



	rc = tpm_getcap(dev, TPM_CAP_FLAG_PERM, &cap,

			 "attempting to determine the permanent enabled state");

	if (rc)

		return 0;



	rc = sprintf(buf, "%d\n", !cap.perm_flags.disable);

	return rc;

}

EXPORT_SYMBOL_GPL(tpm_show_enabled);



ssize_t tpm_show_active(struct device *dev, struct device_attribute *attr,

			char *buf)

{

	cap_t cap;

	ssize_t rc;



	rc = tpm_getcap(dev, TPM_CAP_FLAG_PERM, &cap,

			 "attempting to determine the permanent active state");

	if (rc)

		return 0;



	rc = sprintf(buf, "%d\n", !cap.perm_flags.deactivated);

	return rc;

}

EXPORT_SYMBOL_GPL(tpm_show_active);



ssize_t tpm_show_owned(struct device *dev, struct device_attribute *attr,

			char *buf)

{

	cap_t cap;

	ssize_t rc;



	rc = tpm_getcap(dev, TPM_CAP_PROP_OWNER, &cap,

			 "attempting to determine the owner state");

	if (rc)

		return 0;



	rc = sprintf(buf, "%d\n", cap.owned);

	return rc;

}

EXPORT_SYMBOL_GPL(tpm_show_owned);



ssize_t tpm_show_temp_deactivated(struct device *dev,

				struct device_attribute *attr, char *buf)

{

	cap_t cap;

	ssize_t rc;



	rc = tpm_getcap(dev, TPM_CAP_FLAG_VOL, &cap,

			 "attempting to determine the temporary state");

	if (rc)

		return 0;



	rc = sprintf(buf, "%d\n", cap.stclear_flags.deactivated);

	return rc;

}

EXPORT_SYMBOL_GPL(tpm_show_temp_deactivated);



/*

 * tpm_chip_find_get - return tpm_chip for given chip number

 */
@@ -735,7 +645,7 @@ static struct tpm_input_header pcrread_header = { 
	.ordinal = TPM_ORDINAL_PCRREAD

};



static int __tpm_pcr_read(struct tpm_chip *chip, int pcr_idx, u8 *res_buf)

int tpm_pcr_read_dev(struct tpm_chip *chip, int pcr_idx, u8 *res_buf)

{

	int rc;

	struct tpm_cmd_t cmd;
@@ -770,7 +680,7 @@ int tpm_pcr_read(u32 chip_num, int pcr_idx, u8 *res_buf) 
	chip = tpm_chip_find_get(chip_num);

	if (chip == NULL)

		return -ENODEV;

	rc = __tpm_pcr_read(chip, pcr_idx, res_buf);

	rc = tpm_pcr_read_dev(chip, pcr_idx, res_buf);

	tpm_chip_put(chip);

	return rc;

}
@@ -894,187 +804,6 @@ int tpm_send(u32 chip_num, void *cmd, size_t buflen) 
}

EXPORT_SYMBOL_GPL(tpm_send);



ssize_t tpm_show_pcrs(struct device *dev, struct device_attribute *attr,

		      char *buf)

{

	cap_t cap;

	u8 digest[TPM_DIGEST_SIZE];

	ssize_t rc;

	int i, j, num_pcrs;

	char *str = buf;

	struct tpm_chip *chip = dev_get_drvdata(dev);



	rc = tpm_getcap(dev, TPM_CAP_PROP_PCR, &cap,

			"attempting to determine the number of PCRS");

	if (rc)

		return 0;



	num_pcrs = be32_to_cpu(cap.num_pcrs);

	for (i = 0; i < num_pcrs; i++) {

		rc = __tpm_pcr_read(chip, i, digest);

		if (rc)

			break;

		str += sprintf(str, "PCR-%02d: ", i);

		for (j = 0; j < TPM_DIGEST_SIZE; j++)

			str += sprintf(str, "%02X ", digest[j]);

		str += sprintf(str, "\n");

	}

	return str - buf;

}

EXPORT_SYMBOL_GPL(tpm_show_pcrs);



#define  READ_PUBEK_RESULT_SIZE 314

#define TPM_ORD_READPUBEK cpu_to_be32(124)

static struct tpm_input_header tpm_readpubek_header = {

	.tag = TPM_TAG_RQU_COMMAND,

	.length = cpu_to_be32(30),

	.ordinal = TPM_ORD_READPUBEK

};



ssize_t tpm_show_pubek(struct device *dev, struct device_attribute *attr,

		       char *buf)

{

	u8 *data;

	struct tpm_cmd_t tpm_cmd;

	ssize_t err;

	int i, rc;

	char *str = buf;



	struct tpm_chip *chip = dev_get_drvdata(dev);



	tpm_cmd.header.in = tpm_readpubek_header;

	err = transmit_cmd(chip, &tpm_cmd, READ_PUBEK_RESULT_SIZE,

			"attempting to read the PUBEK");

	if (err)

		goto out;



	/*

	   ignore header 10 bytes

	   algorithm 32 bits (1 == RSA )

	   encscheme 16 bits

	   sigscheme 16 bits

	   parameters (RSA 12->bytes: keybit, #primes, expbit)

	   keylenbytes 32 bits

	   256 byte modulus

	   ignore checksum 20 bytes

	 */

	data = tpm_cmd.params.readpubek_out_buffer;

	str +=

	    sprintf(str,

		    "Algorithm: %02X %02X %02X %02X\n"

		    "Encscheme: %02X %02X\n"

		    "Sigscheme: %02X %02X\n"

		    "Parameters: %02X %02X %02X %02X "

		    "%02X %02X %02X %02X "

		    "%02X %02X %02X %02X\n"

		    "Modulus length: %d\n"

		    "Modulus:\n",

		    data[0], data[1], data[2], data[3],

		    data[4], data[5],

		    data[6], data[7],

		    data[12], data[13], data[14], data[15],

		    data[16], data[17], data[18], data[19],

		    data[20], data[21], data[22], data[23],

		    be32_to_cpu(*((__be32 *) (data + 24))));



	for (i = 0; i < 256; i++) {

		str += sprintf(str, "%02X ", data[i + 28]);

		if ((i + 1) % 16 == 0)

			str += sprintf(str, "\n");

	}

out:

	rc = str - buf;

	return rc;

}

EXPORT_SYMBOL_GPL(tpm_show_pubek);





ssize_t tpm_show_caps(struct device *dev, struct device_attribute *attr,

		      char *buf)

{

	cap_t cap;

	ssize_t rc;

	char *str = buf;



	rc = tpm_getcap(dev, TPM_CAP_PROP_MANUFACTURER, &cap,

			"attempting to determine the manufacturer");

	if (rc)

		return 0;

	str += sprintf(str, "Manufacturer: 0x%x\n",

		       be32_to_cpu(cap.manufacturer_id));



	/* Try to get a TPM version 1.2 TPM_CAP_VERSION_INFO */

	rc = tpm_getcap(dev, CAP_VERSION_1_2, &cap,

			 "attempting to determine the 1.2 version");

	if (!rc) {

		str += sprintf(str,

			       "TCG version: %d.%d\nFirmware version: %d.%d\n",

			       cap.tpm_version_1_2.Major,

			       cap.tpm_version_1_2.Minor,

			       cap.tpm_version_1_2.revMajor,

			       cap.tpm_version_1_2.revMinor);

	} else {

		/* Otherwise just use TPM_STRUCT_VER */

		rc = tpm_getcap(dev, CAP_VERSION_1_1, &cap,

				"attempting to determine the 1.1 version");

		if (rc)

			return 0;

		str += sprintf(str,

			       "TCG version: %d.%d\nFirmware version: %d.%d\n",

			       cap.tpm_version.Major,

			       cap.tpm_version.Minor,

			       cap.tpm_version.revMajor,

			       cap.tpm_version.revMinor);

	}



	return str - buf;

}

EXPORT_SYMBOL_GPL(tpm_show_caps);



ssize_t tpm_show_durations(struct device *dev, struct device_attribute *attr,

			  char *buf)

{

	struct tpm_chip *chip = dev_get_drvdata(dev);



	if (chip->vendor.duration[TPM_LONG] == 0)

		return 0;



	return sprintf(buf, "%d %d %d [%s]\n",

		       jiffies_to_usecs(chip->vendor.duration[TPM_SHORT]),

		       jiffies_to_usecs(chip->vendor.duration[TPM_MEDIUM]),

		       jiffies_to_usecs(chip->vendor.duration[TPM_LONG]),

		       chip->vendor.duration_adjusted

		       ? "adjusted" : "original");

}

EXPORT_SYMBOL_GPL(tpm_show_durations);



ssize_t tpm_show_timeouts(struct device *dev, struct device_attribute *attr,

			  char *buf)

{

	struct tpm_chip *chip = dev_get_drvdata(dev);



	return sprintf(buf, "%d %d %d %d [%s]\n",

		       jiffies_to_usecs(chip->vendor.timeout_a),

		       jiffies_to_usecs(chip->vendor.timeout_b),

		       jiffies_to_usecs(chip->vendor.timeout_c),

		       jiffies_to_usecs(chip->vendor.timeout_d),

		       chip->vendor.timeout_adjusted

		       ? "adjusted" : "original");

}

EXPORT_SYMBOL_GPL(tpm_show_timeouts);



ssize_t tpm_store_cancel(struct device *dev, struct device_attribute *attr,

			const char *buf, size_t count)

{

	struct tpm_chip *chip = dev_get_drvdata(dev);

	if (chip == NULL)

		return 0;



	chip->vendor.cancel(chip);

	return count;

}

EXPORT_SYMBOL_GPL(tpm_store_cancel);



static bool wait_for_tpm_stat_cond(struct tpm_chip *chip, u8 mask,

					bool check_cancel, bool *canceled)

{

drivers/char/tpm/tpm-sysfs.c

0 → 100644
+281 −0
Original line number Diff line number Diff line 
/*

 * Copyright (C) 2004 IBM Corporation

 * Authors:

 * Leendert van Doorn <leendert@watson.ibm.com>

 * Dave Safford <safford@watson.ibm.com>

 * Reiner Sailer <sailer@watson.ibm.com>

 * Kylene Hall <kjhall@us.ibm.com>

 *

 * sysfs filesystem inspection interface to the 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 <linux/device.h>

#include "tpm.h"



/* XXX for now this helper is duplicated in tpm-interface.c */

static ssize_t transmit_cmd(struct tpm_chip *chip, struct tpm_cmd_t *cmd,

			    int len, const char *desc)

{

	int err;



	len = tpm_transmit(chip, (u8 *) cmd, len);

	if (len <  0)

		return len;

	else if (len < TPM_HEADER_SIZE)

		return -EFAULT;



	err = be32_to_cpu(cmd->header.out.return_code);

	if (err != 0 && desc)

		dev_err(chip->dev, "A TPM error (%d) occurred %s\n", err, desc);



	return err;

}



#define READ_PUBEK_RESULT_SIZE 314

#define TPM_ORD_READPUBEK cpu_to_be32(124)

static struct tpm_input_header tpm_readpubek_header = {

	.tag = TPM_TAG_RQU_COMMAND,

	.length = cpu_to_be32(30),

	.ordinal = TPM_ORD_READPUBEK

};



ssize_t tpm_show_pubek(struct device *dev, struct device_attribute *attr,

		       char *buf)

{

	u8 *data;

	struct tpm_cmd_t tpm_cmd;

	ssize_t err;

	int i, rc;

	char *str = buf;



	struct tpm_chip *chip = dev_get_drvdata(dev);



	tpm_cmd.header.in = tpm_readpubek_header;

	err = transmit_cmd(chip, &tpm_cmd, READ_PUBEK_RESULT_SIZE,

			   "attempting to read the PUBEK");

	if (err)

		goto out;



	/*

	   ignore header 10 bytes

	   algorithm 32 bits (1 == RSA )

	   encscheme 16 bits

	   sigscheme 16 bits

	   parameters (RSA 12->bytes: keybit, #primes, expbit)

	   keylenbytes 32 bits

	   256 byte modulus

	   ignore checksum 20 bytes

	 */

	data = tpm_cmd.params.readpubek_out_buffer;

	str +=

	    sprintf(str,

		    "Algorithm: %02X %02X %02X %02X\n"

		    "Encscheme: %02X %02X\n"

		    "Sigscheme: %02X %02X\n"

		    "Parameters: %02X %02X %02X %02X "

		    "%02X %02X %02X %02X "

		    "%02X %02X %02X %02X\n"

		    "Modulus length: %d\n"

		    "Modulus:\n",

		    data[0], data[1], data[2], data[3],

		    data[4], data[5],

		    data[6], data[7],

		    data[12], data[13], data[14], data[15],

		    data[16], data[17], data[18], data[19],

		    data[20], data[21], data[22], data[23],

		    be32_to_cpu(*((__be32 *) (data + 24))));



	for (i = 0; i < 256; i++) {

		str += sprintf(str, "%02X ", data[i + 28]);

		if ((i + 1) % 16 == 0)

			str += sprintf(str, "\n");

	}

out:

	rc = str - buf;

	return rc;

}

EXPORT_SYMBOL_GPL(tpm_show_pubek);



ssize_t tpm_show_pcrs(struct device *dev, struct device_attribute *attr,

		      char *buf)

{

	cap_t cap;

	u8 digest[TPM_DIGEST_SIZE];

	ssize_t rc;

	int i, j, num_pcrs;

	char *str = buf;

	struct tpm_chip *chip = dev_get_drvdata(dev);



	rc = tpm_getcap(dev, TPM_CAP_PROP_PCR, &cap,

			"attempting to determine the number of PCRS");

	if (rc)

		return 0;



	num_pcrs = be32_to_cpu(cap.num_pcrs);

	for (i = 0; i < num_pcrs; i++) {

		rc = tpm_pcr_read_dev(chip, i, digest);

		if (rc)

			break;

		str += sprintf(str, "PCR-%02d: ", i);

		for (j = 0; j < TPM_DIGEST_SIZE; j++)

			str += sprintf(str, "%02X ", digest[j]);

		str += sprintf(str, "\n");

	}

	return str - buf;

}

EXPORT_SYMBOL_GPL(tpm_show_pcrs);



ssize_t tpm_show_enabled(struct device *dev, struct device_attribute *attr,

			char *buf)

{

	cap_t cap;

	ssize_t rc;



	rc = tpm_getcap(dev, TPM_CAP_FLAG_PERM, &cap,

			 "attempting to determine the permanent enabled state");

	if (rc)

		return 0;



	rc = sprintf(buf, "%d\n", !cap.perm_flags.disable);

	return rc;

}

EXPORT_SYMBOL_GPL(tpm_show_enabled);



ssize_t tpm_show_active(struct device *dev, struct device_attribute *attr,

			char *buf)

{

	cap_t cap;

	ssize_t rc;



	rc = tpm_getcap(dev, TPM_CAP_FLAG_PERM, &cap,

			 "attempting to determine the permanent active state");

	if (rc)

		return 0;



	rc = sprintf(buf, "%d\n", !cap.perm_flags.deactivated);

	return rc;

}

EXPORT_SYMBOL_GPL(tpm_show_active);



ssize_t tpm_show_owned(struct device *dev, struct device_attribute *attr,

			char *buf)

{

	cap_t cap;

	ssize_t rc;



	rc = tpm_getcap(dev, TPM_CAP_PROP_OWNER, &cap,

			 "attempting to determine the owner state");

	if (rc)

		return 0;



	rc = sprintf(buf, "%d\n", cap.owned);

	return rc;

}

EXPORT_SYMBOL_GPL(tpm_show_owned);



ssize_t tpm_show_temp_deactivated(struct device *dev,

				struct device_attribute *attr, char *buf)

{

	cap_t cap;

	ssize_t rc;



	rc = tpm_getcap(dev, TPM_CAP_FLAG_VOL, &cap,

			 "attempting to determine the temporary state");

	if (rc)

		return 0;



	rc = sprintf(buf, "%d\n", cap.stclear_flags.deactivated);

	return rc;

}

EXPORT_SYMBOL_GPL(tpm_show_temp_deactivated);



ssize_t tpm_show_caps(struct device *dev, struct device_attribute *attr,

		      char *buf)

{

	cap_t cap;

	ssize_t rc;

	char *str = buf;



	rc = tpm_getcap(dev, TPM_CAP_PROP_MANUFACTURER, &cap,

			"attempting to determine the manufacturer");

	if (rc)

		return 0;

	str += sprintf(str, "Manufacturer: 0x%x\n",

		       be32_to_cpu(cap.manufacturer_id));



	/* Try to get a TPM version 1.2 TPM_CAP_VERSION_INFO */

	rc = tpm_getcap(dev, CAP_VERSION_1_2, &cap,

			 "attempting to determine the 1.2 version");

	if (!rc) {

		str += sprintf(str,

			       "TCG version: %d.%d\nFirmware version: %d.%d\n",

			       cap.tpm_version_1_2.Major,

			       cap.tpm_version_1_2.Minor,

			       cap.tpm_version_1_2.revMajor,

			       cap.tpm_version_1_2.revMinor);

	} else {

		/* Otherwise just use TPM_STRUCT_VER */

		rc = tpm_getcap(dev, CAP_VERSION_1_1, &cap,

				"attempting to determine the 1.1 version");

		if (rc)

			return 0;

		str += sprintf(str,

			       "TCG version: %d.%d\nFirmware version: %d.%d\n",

			       cap.tpm_version.Major,

			       cap.tpm_version.Minor,

			       cap.tpm_version.revMajor,

			       cap.tpm_version.revMinor);

	}



	return str - buf;

}

EXPORT_SYMBOL_GPL(tpm_show_caps);



ssize_t tpm_store_cancel(struct device *dev, struct device_attribute *attr,

			const char *buf, size_t count)

{

	struct tpm_chip *chip = dev_get_drvdata(dev);

	if (chip == NULL)

		return 0;



	chip->vendor.cancel(chip);

	return count;

}

EXPORT_SYMBOL_GPL(tpm_store_cancel);



ssize_t tpm_show_durations(struct device *dev, struct device_attribute *attr,

			  char *buf)

{

	struct tpm_chip *chip = dev_get_drvdata(dev);



	if (chip->vendor.duration[TPM_LONG] == 0)

		return 0;



	return sprintf(buf, "%d %d %d [%s]\n",

		       jiffies_to_usecs(chip->vendor.duration[TPM_SHORT]),

		       jiffies_to_usecs(chip->vendor.duration[TPM_MEDIUM]),

		       jiffies_to_usecs(chip->vendor.duration[TPM_LONG]),

		       chip->vendor.duration_adjusted

		       ? "adjusted" : "original");

}

EXPORT_SYMBOL_GPL(tpm_show_durations);



ssize_t tpm_show_timeouts(struct device *dev, struct device_attribute *attr,

			  char *buf)

{

	struct tpm_chip *chip = dev_get_drvdata(dev);



	return sprintf(buf, "%d %d %d %d [%s]\n",

		       jiffies_to_usecs(chip->vendor.timeout_a),

		       jiffies_to_usecs(chip->vendor.timeout_b),

		       jiffies_to_usecs(chip->vendor.timeout_c),

		       jiffies_to_usecs(chip->vendor.timeout_d),

		       chip->vendor.timeout_adjusted

		       ? "adjusted" : "original");

}

EXPORT_SYMBOL_GPL(tpm_show_timeouts);

drivers/char/tpm/tpm.h

+30 −0
Original line number Diff line number Diff line
@@ -46,6 +46,14 @@ enum tpm_addr { 
	TPM_ADDR = 0x4E,

};



/* Indexes the duration array */

enum tpm_duration {

	TPM_SHORT = 0,

	TPM_MEDIUM = 1,

	TPM_LONG = 2,

	TPM_UNDEFINED,

};



#define TPM_WARN_RETRY          0x800

#define TPM_WARN_DOING_SELFTEST 0x802

#define TPM_ERR_DEACTIVATED     0x6
@@ -171,6 +179,8 @@ struct tpm_output_header { 
	__be32	return_code;

} __packed;



#define TPM_TAG_RQU_COMMAND cpu_to_be16(193)



struct	stclear_flags_t {

	__be16	tag;

	u8	deactivated;
@@ -244,6 +254,24 @@ typedef union { 
	struct duration_t duration;

} cap_t;



enum tpm_capabilities {

	TPM_CAP_FLAG = cpu_to_be32(4),

	TPM_CAP_PROP = cpu_to_be32(5),

	CAP_VERSION_1_1 = cpu_to_be32(0x06),

	CAP_VERSION_1_2 = cpu_to_be32(0x1A)

};



enum tpm_sub_capabilities {

	TPM_CAP_PROP_PCR = cpu_to_be32(0x101),

	TPM_CAP_PROP_MANUFACTURER = cpu_to_be32(0x103),

	TPM_CAP_FLAG_PERM = cpu_to_be32(0x108),

	TPM_CAP_FLAG_VOL = cpu_to_be32(0x109),

	TPM_CAP_PROP_OWNER = cpu_to_be32(0x111),

	TPM_CAP_PROP_TIS_TIMEOUT = cpu_to_be32(0x115),

	TPM_CAP_PROP_TIS_DURATION = cpu_to_be32(0x120),



};



struct	tpm_getcap_params_in {

	__be32	cap;

	__be32	subcap_size;
@@ -341,6 +369,8 @@ extern int wait_for_tpm_stat(struct tpm_chip *, u8, unsigned long, 
int tpm_dev_add_device(struct tpm_chip *chip);

void tpm_dev_del_device(struct tpm_chip *chip);



int tpm_pcr_read_dev(struct tpm_chip *chip, int pcr_idx, u8 *res_buf);



#ifdef CONFIG_ACPI

extern int tpm_add_ppi(struct kobject *);

extern void tpm_remove_ppi(struct kobject *);

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