Commit 901615cb authored by Roberto Sassu's avatar Roberto Sassu Committed by Jarkko Sakkinen
Browse files

tpm: move tpm_chip definition to include/linux/tpm.h 



The tpm_chip structure contains the list of PCR banks currently allocated
in the TPM. When support for crypto agility will be added to the TPM
driver, users of the driver have to provide a digest for each allocated
bank to tpm_pcr_extend(). With this patch, they can obtain the PCR bank
algorithms directly from chip->allocated_banks.

Signed-off-by: default avatarRoberto Sassu <roberto.sassu@huawei.com>
Reviewed-by: default avatarJarkko Sakkinen <jarkko.sakkinen@linux.intel.com>
Tested-by: default avatarJarkko Sakkinen <jarkko.sakkinen@linux.intel.com>
Signed-off-by: default avatarJarkko Sakkinen <jarkko.sakkinen@linux.intel.com>
parent 879b5892

drivers/char/tpm/tpm.h

+4 −97
Original line number Diff line number Diff line
@@ -25,30 +25,22 @@ 


#include <linux/module.h>

#include <linux/delay.h>

#include <linux/fs.h>

#include <linux/hw_random.h>

#include <linux/mutex.h>

#include <linux/sched.h>

#include <linux/platform_device.h>

#include <linux/io.h>

#include <linux/tpm.h>

#include <linux/acpi.h>

#include <linux/cdev.h>

#include <linux/highmem.h>

#include <linux/tpm_eventlog.h>

#include <crypto/hash_info.h>



#ifdef CONFIG_X86

#include <asm/intel-family.h>

#endif



enum tpm_const {

	TPM_MINOR = 224,	/* officially assigned */

	TPM_BUFSIZE = 4096,

	TPM_NUM_DEVICES = 65536,

	TPM_RETRY = 50,		/* 5 seconds */

	TPM_NUM_EVENT_LOG_FILES = 3,

};

#define TPM_MINOR		224	/* officially assigned */

#define TPM_BUFSIZE		4096

#define TPM_NUM_DEVICES		65536

#define TPM_RETRY		50



enum tpm_timeout {

	TPM_TIMEOUT = 5,	/* msecs */
@@ -65,16 +57,6 @@ enum tpm_addr { 
	TPM_ADDR = 0x4E,

};



/* Indexes the duration array */

enum tpm_duration {

	TPM_SHORT = 0,

	TPM_MEDIUM = 1,

	TPM_LONG = 2,

	TPM_LONG_LONG = 3,

	TPM_UNDEFINED,

	TPM_NUM_DURATIONS = TPM_UNDEFINED,

};



#define TPM_WARN_RETRY          0x800

#define TPM_WARN_DOING_SELFTEST 0x802

#define TPM_ERR_DEACTIVATED     0x6
@@ -179,15 +161,6 @@ enum tpm2_cc_attrs { 
#define TPM_VID_WINBOND  0x1050

#define TPM_VID_STM      0x104A



#define TPM_PPI_VERSION_LEN		3



struct tpm_space {

	u32 context_tbl[3];

	u8 *context_buf;

	u32 session_tbl[3];

	u8 *session_buf;

};



enum tpm_chip_flags {

	TPM_CHIP_FLAG_TPM2		= BIT(1),

	TPM_CHIP_FLAG_IRQ		= BIT(2),
@@ -196,72 +169,6 @@ enum tpm_chip_flags { 
	TPM_CHIP_FLAG_ALWAYS_POWERED	= BIT(5),

};



struct tpm_bios_log {

	void *bios_event_log;

	void *bios_event_log_end;

};



struct tpm_chip_seqops {

	struct tpm_chip *chip;

	const struct seq_operations *seqops;

};



struct tpm_chip {

	struct device dev;

	struct device devs;

	struct cdev cdev;

	struct cdev cdevs;



	/* A driver callback under ops cannot be run unless ops_sem is held

	 * (sometimes implicitly, eg for the sysfs code). ops becomes null

	 * when the driver is unregistered, see tpm_try_get_ops.

	 */

	struct rw_semaphore ops_sem;

	const struct tpm_class_ops *ops;



	struct tpm_bios_log log;

	struct tpm_chip_seqops bin_log_seqops;

	struct tpm_chip_seqops ascii_log_seqops;



	unsigned int flags;



	int dev_num;		/* /dev/tpm# */

	unsigned long is_open;	/* only one allowed */



	char hwrng_name[64];

	struct hwrng hwrng;



	struct mutex tpm_mutex;	/* tpm is processing */



	unsigned long timeout_a; /* jiffies */

	unsigned long timeout_b; /* jiffies */

	unsigned long timeout_c; /* jiffies */

	unsigned long timeout_d; /* jiffies */

	bool timeout_adjusted;

	unsigned long duration[TPM_NUM_DURATIONS]; /* jiffies */

	bool duration_adjusted;



	struct dentry *bios_dir[TPM_NUM_EVENT_LOG_FILES];



	const struct attribute_group *groups[3];

	unsigned int groups_cnt;



	u32 nr_allocated_banks;

	struct tpm_bank_info *allocated_banks;

#ifdef CONFIG_ACPI

	acpi_handle acpi_dev_handle;

	char ppi_version[TPM_PPI_VERSION_LEN + 1];

#endif /* CONFIG_ACPI */



	struct tpm_space work_space;

	u32 last_cc;

	u32 nr_commands;

	u32 *cc_attrs_tbl;



	/* active locality */

	int locality;

};



#define to_tpm_chip(d) container_of(d, struct tpm_chip, dev)



struct tpm_header {

include/linux/tpm.h

+91 −0
Original line number Diff line number Diff line
@@ -22,6 +22,10 @@ 
#ifndef __LINUX_TPM_H__

#define __LINUX_TPM_H__



#include <linux/hw_random.h>

#include <linux/acpi.h>

#include <linux/cdev.h>

#include <linux/fs.h>

#include <crypto/hash_info.h>



#define TPM_DIGEST_SIZE 20	/* Max TPM v1.2 PCR size */
@@ -75,6 +79,93 @@ struct tpm_class_ops { 
	void (*clk_enable)(struct tpm_chip *chip, bool value);

};



#define TPM_NUM_EVENT_LOG_FILES		3



/* Indexes the duration array */

enum tpm_duration {

	TPM_SHORT = 0,

	TPM_MEDIUM = 1,

	TPM_LONG = 2,

	TPM_LONG_LONG = 3,

	TPM_UNDEFINED,

	TPM_NUM_DURATIONS = TPM_UNDEFINED,

};



#define TPM_PPI_VERSION_LEN		3



struct tpm_space {

	u32 context_tbl[3];

	u8 *context_buf;

	u32 session_tbl[3];

	u8 *session_buf;

};



struct tpm_bios_log {

	void *bios_event_log;

	void *bios_event_log_end;

};



struct tpm_chip_seqops {

	struct tpm_chip *chip;

	const struct seq_operations *seqops;

};



struct tpm_chip {

	struct device dev;

	struct device devs;

	struct cdev cdev;

	struct cdev cdevs;



	/* A driver callback under ops cannot be run unless ops_sem is held

	 * (sometimes implicitly, eg for the sysfs code). ops becomes null

	 * when the driver is unregistered, see tpm_try_get_ops.

	 */

	struct rw_semaphore ops_sem;

	const struct tpm_class_ops *ops;



	struct tpm_bios_log log;

	struct tpm_chip_seqops bin_log_seqops;

	struct tpm_chip_seqops ascii_log_seqops;



	unsigned int flags;



	int dev_num;		/* /dev/tpm# */

	unsigned long is_open;	/* only one allowed */



	char hwrng_name[64];

	struct hwrng hwrng;



	struct mutex tpm_mutex;	/* tpm is processing */



	unsigned long timeout_a; /* jiffies */

	unsigned long timeout_b; /* jiffies */

	unsigned long timeout_c; /* jiffies */

	unsigned long timeout_d; /* jiffies */

	bool timeout_adjusted;

	unsigned long duration[TPM_NUM_DURATIONS]; /* jiffies */

	bool duration_adjusted;



	struct dentry *bios_dir[TPM_NUM_EVENT_LOG_FILES];



	const struct attribute_group *groups[3];

	unsigned int groups_cnt;



	u32 nr_allocated_banks;

	struct tpm_bank_info *allocated_banks;

#ifdef CONFIG_ACPI

	acpi_handle acpi_dev_handle;

	char ppi_version[TPM_PPI_VERSION_LEN + 1];

#endif /* CONFIG_ACPI */



	struct tpm_space work_space;

	u32 last_cc;

	u32 nr_commands;

	u32 *cc_attrs_tbl;



	/* active locality */

	int locality;

};



#if defined(CONFIG_TCG_TPM) || defined(CONFIG_TCG_TPM_MODULE)



extern int tpm_is_tpm2(struct tpm_chip *chip);

CRA Git | Maintained and supported by SUSTech CRA and CCSE