1 files changed, 0 insertions, 697 deletions

diff --git a/drivers/char/tpm/tpm.c b/drivers/char/tpm/tpm.c
deleted file mode 100644
index 8ce508b2986..00000000000
--- a/drivers/char/tpm/tpm.c
+++ /dev/null
@@ -1,697 +0,0 @@
-/*
- * 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>
- *
- * Maintained by: <tpmdd_devel@lists.sourceforge.net>
- *
- * Device driver for TCG/TCPA TPM (trusted platform module).
- * Specifications at www.trustedcomputinggroup.org	 
- *
- * 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.
- * 
- * Note, the TPM chip is not interrupt driven (only polling)
- * and can have very long timeouts (minutes!). Hence the unusual
- * calls to schedule_timeout.
- *
- */
-
-#include <linux/sched.h>
-#include <linux/poll.h>
-#include <linux/spinlock.h>
-#include "tpm.h"
-
-#define	TPM_MINOR			224	/* officially assigned */
-
-#define	TPM_BUFSIZE			2048
-
-/* PCI configuration addresses */
-#define	PCI_GEN_PMCON_1			0xA0
-#define	PCI_GEN1_DEC			0xE4
-#define	PCI_LPC_EN			0xE6
-#define	PCI_GEN2_DEC			0xEC
-
-static LIST_HEAD(tpm_chip_list);
-static DEFINE_SPINLOCK(driver_lock);
-static int dev_mask[32];
-
-static void user_reader_timeout(unsigned long ptr)
-{
-	struct tpm_chip *chip = (struct tpm_chip *) ptr;
-
-	down(&chip->buffer_mutex);
-	atomic_set(&chip->data_pending, 0);
-	memset(chip->data_buffer, 0, TPM_BUFSIZE);
-	up(&chip->buffer_mutex);
-}
-
-void tpm_time_expired(unsigned long ptr)
-{
-	int *exp = (int *) ptr;
-	*exp = 1;
-}
-
-EXPORT_SYMBOL_GPL(tpm_time_expired);
-
-/*
- * Initialize the LPC bus and enable the TPM ports
- */
-int tpm_lpc_bus_init(struct pci_dev *pci_dev, u16 base)
-{
-	u32 lpcenable, tmp;
-	int is_lpcm = 0;
-
-	switch (pci_dev->vendor) {
-	case PCI_VENDOR_ID_INTEL:
-		switch (pci_dev->device) {
-		case PCI_DEVICE_ID_INTEL_82801CA_12:
-		case PCI_DEVICE_ID_INTEL_82801DB_12:
-			is_lpcm = 1;
-			break;
-		}
-		/* init ICH (enable LPC) */
-		pci_read_config_dword(pci_dev, PCI_GEN1_DEC, &lpcenable);
-		lpcenable |= 0x20000000;
-		pci_write_config_dword(pci_dev, PCI_GEN1_DEC, lpcenable);
-
-		if (is_lpcm) {
-			pci_read_config_dword(pci_dev, PCI_GEN1_DEC,
-					      &lpcenable);
-			if ((lpcenable & 0x20000000) == 0) {
-				dev_err(&pci_dev->dev,
-					"cannot enable LPC\n");
-				return -ENODEV;
-			}
-		}
-
-		/* initialize TPM registers */
-		pci_read_config_dword(pci_dev, PCI_GEN2_DEC, &tmp);
-
-		if (!is_lpcm)
-			tmp = (tmp & 0xFFFF0000) | (base & 0xFFF0);
-		else
-			tmp =
-			    (tmp & 0xFFFF0000) | (base & 0xFFF0) |
-			    0x00000001;
-
-		pci_write_config_dword(pci_dev, PCI_GEN2_DEC, tmp);
-
-		if (is_lpcm) {
-			pci_read_config_dword(pci_dev, PCI_GEN_PMCON_1,
-					      &tmp);
-			tmp |= 0x00000004;	/* enable CLKRUN */
-			pci_write_config_dword(pci_dev, PCI_GEN_PMCON_1,
-					       tmp);
-		}
-		tpm_write_index(0x0D, 0x55);	/* unlock 4F */
-		tpm_write_index(0x0A, 0x00);	/* int disable */
-		tpm_write_index(0x08, base);	/* base addr lo */
-		tpm_write_index(0x09, (base & 0xFF00) >> 8);	/* base addr hi */
-		tpm_write_index(0x0D, 0xAA);	/* lock 4F */
-		break;
-	case PCI_VENDOR_ID_AMD:
-		/* nothing yet */
-		break;
-	}
-
-	return 0;
-}
-
-EXPORT_SYMBOL_GPL(tpm_lpc_bus_init);
-
-/*
- * Internal kernel interface to transmit TPM commands
- */
-static ssize_t tpm_transmit(struct tpm_chip *chip, const char *buf,
-			    size_t bufsiz)
-{
-	ssize_t len;
-	u32 count;
-	__be32 *native_size;
-
-	native_size = (__force __be32 *) (buf + 2);
-	count = be32_to_cpu(*native_size);
-
-	if (count == 0)
-		return -ENODATA;
-	if (count > bufsiz) {
-		dev_err(&chip->pci_dev->dev,
-			"invalid count value %x %zx \n", count, bufsiz);
-		return -E2BIG;
-	}
-
-	down(&chip->tpm_mutex);
-
-	if ((len = chip->vendor->send(chip, (u8 *) buf, count)) < 0) {
-		dev_err(&chip->pci_dev->dev,
-			"tpm_transmit: tpm_send: error %zd\n", len);
-		return len;
-	}
-
-	down(&chip->timer_manipulation_mutex);
-	chip->time_expired = 0;
-	init_timer(&chip->device_timer);
-	chip->device_timer.function = tpm_time_expired;
-	chip->device_timer.expires = jiffies + 2 * 60 * HZ;
-	chip->device_timer.data = (unsigned long) &chip->time_expired;
-	add_timer(&chip->device_timer);
-	up(&chip->timer_manipulation_mutex);
-
-	do {
-		u8 status = inb(chip->vendor->base + 1);
-		if ((status & chip->vendor->req_complete_mask) ==
-		    chip->vendor->req_complete_val) {
-			down(&chip->timer_manipulation_mutex);
-			del_singleshot_timer_sync(&chip->device_timer);
-			up(&chip->timer_manipulation_mutex);
-			goto out_recv;
-		}
-		set_current_state(TASK_UNINTERRUPTIBLE);
-		schedule_timeout(TPM_TIMEOUT);
-		rmb();
-	} while (!chip->time_expired);
-
-
-	chip->vendor->cancel(chip);
-	dev_err(&chip->pci_dev->dev, "Time expired\n");
-	up(&chip->tpm_mutex);
-	return -EIO;
-
-out_recv:
-	len = chip->vendor->recv(chip, (u8 *) buf, bufsiz);
-	if (len < 0)
-		dev_err(&chip->pci_dev->dev,
-			"tpm_transmit: tpm_recv: error %zd\n", len);
-	up(&chip->tpm_mutex);
-	return len;
-}
-
-#define TPM_DIGEST_SIZE 20
-#define CAP_PCR_RESULT_SIZE 18
-static u8 cap_pcr[] = {
-	0, 193,			/* TPM_TAG_RQU_COMMAND */
-	0, 0, 0, 22,		/* length */
-	0, 0, 0, 101,		/* TPM_ORD_GetCapability */
-	0, 0, 0, 5,
-	0, 0, 0, 4,
-	0, 0, 1, 1
-};
-
-#define READ_PCR_RESULT_SIZE 30
-static u8 pcrread[] = {
-	0, 193,			/* TPM_TAG_RQU_COMMAND */
-	0, 0, 0, 14,		/* length */
-	0, 0, 0, 21,		/* TPM_ORD_PcrRead */
-	0, 0, 0, 0		/* PCR index */
-};
-
-static ssize_t show_pcrs(struct device *dev, struct device_attribute *attr, char *buf)
-{
-	u8 data[READ_PCR_RESULT_SIZE];
-	ssize_t len;
-	int i, j, index, num_pcrs;
-	char *str = buf;
-
-	struct tpm_chip *chip =
-	    pci_get_drvdata(container_of(dev, struct pci_dev, dev));
-	if (chip == NULL)
-		return -ENODEV;
-
-	memcpy(data, cap_pcr, sizeof(cap_pcr));
-	if ((len = tpm_transmit(chip, data, sizeof(data)))
-	    < CAP_PCR_RESULT_SIZE)
-		return len;
-
-	num_pcrs = be32_to_cpu(*((__force __be32 *) (data + 14)));
-
-	for (i = 0; i < num_pcrs; i++) {
-		memcpy(data, pcrread, sizeof(pcrread));
-		index = cpu_to_be32(i);
-		memcpy(data + 10, &index, 4);
-		if ((len = tpm_transmit(chip, data, sizeof(data)))
-		    < READ_PCR_RESULT_SIZE)
-			return len;
-		str += sprintf(str, "PCR-%02d: ", i);
-		for (j = 0; j < TPM_DIGEST_SIZE; j++)
-			str += sprintf(str, "%02X ", *(data + 10 + j));
-		str += sprintf(str, "\n");
-	}
-	return str - buf;
-}
-
-static DEVICE_ATTR(pcrs, S_IRUGO, show_pcrs, NULL);
-
-#define  READ_PUBEK_RESULT_SIZE 314
-static u8 readpubek[] = {
-	0, 193,			/* TPM_TAG_RQU_COMMAND */
-	0, 0, 0, 30,		/* length */
-	0, 0, 0, 124,		/* TPM_ORD_ReadPubek */
-};
-
-static ssize_t show_pubek(struct device *dev, struct device_attribute *attr, char *buf)
-{
-	u8 data[READ_PUBEK_RESULT_SIZE];
-	ssize_t len;
-	__be32 *native_val;
-	int i;
-	char *str = buf;
-
-	struct tpm_chip *chip =
-	    pci_get_drvdata(container_of(dev, struct pci_dev, dev));
-	if (chip == NULL)
-		return -ENODEV;
-
-	memcpy(data, readpubek, sizeof(readpubek));
-	memset(data + sizeof(readpubek), 0, 20);	/* zero nonce */
-
-	if ((len = tpm_transmit(chip, data, sizeof(data))) <
-	    READ_PUBEK_RESULT_SIZE)
-		return len;
-
-	/* 
-	   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
-	 */
-
-	native_val = (__force __be32 *) (data + 34);
-
-	str +=
-	    sprintf(str,
-		    "Algorithm: %02X %02X %02X %02X\nEncscheme: %02X %02X\n"
-		    "Sigscheme: %02X %02X\nParameters: %02X %02X %02X %02X"
-		    " %02X %02X %02X %02X %02X %02X %02X %02X\n"
-		    "Modulus length: %d\nModulus: \n",
-		    data[10], data[11], data[12], data[13], data[14],
-		    data[15], data[16], data[17], data[22], data[23],
-		    data[24], data[25], data[26], data[27], data[28],
-		    data[29], data[30], data[31], data[32], data[33],
-		    be32_to_cpu(*native_val)
-	    );
-
-	for (i = 0; i < 256; i++) {
-		str += sprintf(str, "%02X ", data[i + 39]);
-		if ((i + 1) % 16 == 0)
-			str += sprintf(str, "\n");
-	}
-	return str - buf;
-}
-
-static DEVICE_ATTR(pubek, S_IRUGO, show_pubek, NULL);
-
-#define CAP_VER_RESULT_SIZE 18
-static u8 cap_version[] = {
-	0, 193,			/* TPM_TAG_RQU_COMMAND */
-	0, 0, 0, 18,		/* length */
-	0, 0, 0, 101,		/* TPM_ORD_GetCapability */
-	0, 0, 0, 6,
-	0, 0, 0, 0
-};
-
-#define CAP_MANUFACTURER_RESULT_SIZE 18
-static u8 cap_manufacturer[] = {
-	0, 193,			/* TPM_TAG_RQU_COMMAND */
-	0, 0, 0, 22,		/* length */
-	0, 0, 0, 101,		/* TPM_ORD_GetCapability */
-	0, 0, 0, 5,
-	0, 0, 0, 4,
-	0, 0, 1, 3
-};
-
-static ssize_t show_caps(struct device *dev, struct device_attribute *attr, char *buf)
-{
-	u8 data[READ_PUBEK_RESULT_SIZE];
-	ssize_t len;
-	char *str = buf;
-
-	struct tpm_chip *chip =
-	    pci_get_drvdata(container_of(dev, struct pci_dev, dev));
-	if (chip == NULL)
-		return -ENODEV;
-
-	memcpy(data, cap_manufacturer, sizeof(cap_manufacturer));
-
-	if ((len = tpm_transmit(chip, data, sizeof(data))) <
-	    CAP_MANUFACTURER_RESULT_SIZE)
-		return len;
-
-	str += sprintf(str, "Manufacturer: 0x%x\n",
-		       be32_to_cpu(*(data + 14)));
-
-	memcpy(data, cap_version, sizeof(cap_version));
-
-	if ((len = tpm_transmit(chip, data, sizeof(data))) <
-	    CAP_VER_RESULT_SIZE)
-		return len;
-
-	str +=
-	    sprintf(str, "TCG version: %d.%d\nFirmware version: %d.%d\n",
-		    (int) data[14], (int) data[15], (int) data[16],
-		    (int) data[17]);
-
-	return str - buf;
-}
-
-static DEVICE_ATTR(caps, S_IRUGO, show_caps, NULL);
-
-/*
- * Device file system interface to the TPM
- */
-int tpm_open(struct inode *inode, struct file *file)
-{
-	int rc = 0, minor = iminor(inode);
-	struct tpm_chip *chip = NULL, *pos;
-
-	spin_lock(&driver_lock);
-
-	list_for_each_entry(pos, &tpm_chip_list, list) {
-		if (pos->vendor->miscdev.minor == minor) {
-			chip = pos;
-			break;
-		}
-	}
-
-	if (chip == NULL) {
-		rc = -ENODEV;
-		goto err_out;
-	}
-
-	if (chip->num_opens) {
-		dev_dbg(&chip->pci_dev->dev,
-			"Another process owns this TPM\n");
-		rc = -EBUSY;
-		goto err_out;
-	}
-
-	chip->num_opens++;
-	pci_dev_get(chip->pci_dev);
-
-	spin_unlock(&driver_lock);
-
-	chip->data_buffer = kmalloc(TPM_BUFSIZE * sizeof(u8), GFP_KERNEL);
-	if (chip->data_buffer == NULL) {
-		chip->num_opens--;
-		pci_dev_put(chip->pci_dev);
-		return -ENOMEM;
-	}
-
-	atomic_set(&chip->data_pending, 0);
-
-	file->private_data = chip;
-	return 0;
-
-err_out:
-	spin_unlock(&driver_lock);
-	return rc;
-}
-
-EXPORT_SYMBOL_GPL(tpm_open);
-
-int tpm_release(struct inode *inode, struct file *file)
-{
-	struct tpm_chip *chip = file->private_data;
-	
-	file->private_data = NULL;
-
-	spin_lock(&driver_lock);
-	chip->num_opens--;
-	spin_unlock(&driver_lock);
-
-	down(&chip->timer_manipulation_mutex);
-	if (timer_pending(&chip->user_read_timer))
-		del_singleshot_timer_sync(&chip->user_read_timer);
-	else if (timer_pending(&chip->device_timer))
-		del_singleshot_timer_sync(&chip->device_timer);
-	up(&chip->timer_manipulation_mutex);
-
-	kfree(chip->data_buffer);
-	atomic_set(&chip->data_pending, 0);
-
-	pci_dev_put(chip->pci_dev);
-	return 0;
-}
-
-EXPORT_SYMBOL_GPL(tpm_release);
-
-ssize_t tpm_write(struct file * file, const char __user * buf,
-		  size_t size, loff_t * off)
-{
-	struct tpm_chip *chip = file->private_data;
-	int in_size = size, out_size;
-
-	/* cannot perform a write until the read has cleared
-	   either via tpm_read or a user_read_timer timeout */
-	while (atomic_read(&chip->data_pending) != 0) {
-		set_current_state(TASK_UNINTERRUPTIBLE);
-		schedule_timeout(TPM_TIMEOUT);
-	}
-
-	down(&chip->buffer_mutex);
-
-	if (in_size > TPM_BUFSIZE)
-		in_size = TPM_BUFSIZE;
-
-	if (copy_from_user
-	    (chip->data_buffer, (void __user *) buf, in_size)) {
-		up(&chip->buffer_mutex);
-		return -EFAULT;
-	}
-
-	/* atomic tpm command send and result receive */
-	out_size = tpm_transmit(chip, chip->data_buffer, TPM_BUFSIZE);
-
-	atomic_set(&chip->data_pending, out_size);
-	up(&chip->buffer_mutex);
-
-	/* Set a timeout by which the reader must come claim the result */
-	down(&chip->timer_manipulation_mutex);
-	init_timer(&chip->user_read_timer);
-	chip->user_read_timer.function = user_reader_timeout;
-	chip->user_read_timer.data = (unsigned long) chip;
-	chip->user_read_timer.expires = jiffies + (60 * HZ);
-	add_timer(&chip->user_read_timer);
-	up(&chip->timer_manipulation_mutex);
-
-	return in_size;
-}
-
-EXPORT_SYMBOL_GPL(tpm_write);
-
-ssize_t tpm_read(struct file * file, char __user * buf,
-		 size_t size, loff_t * off)
-{
-	struct tpm_chip *chip = file->private_data;
-	int ret_size = -ENODATA;
-
-	if (atomic_read(&chip->data_pending) != 0) {	/* Result available */
-		down(&chip->timer_manipulation_mutex);
-		del_singleshot_timer_sync(&chip->user_read_timer);
-		up(&chip->timer_manipulation_mutex);
-
-		down(&chip->buffer_mutex);
-
-		ret_size = atomic_read(&chip->data_pending);
-		atomic_set(&chip->data_pending, 0);
-
-		if (ret_size == 0)	/* timeout just occurred */
-			ret_size = -ETIME;
-		else if (ret_size > 0) {	/* relay data */
-			if (size < ret_size)
-				ret_size = size;
-
-			if (copy_to_user((void __user *) buf,
-					 chip->data_buffer, ret_size)) {
-				ret_size = -EFAULT;
-			}
-		}
-		up(&chip->buffer_mutex);
-	}
-
-	return ret_size;
-}
-
-EXPORT_SYMBOL_GPL(tpm_read);
-
-void __devexit tpm_remove(struct pci_dev *pci_dev)
-{
-	struct tpm_chip *chip = pci_get_drvdata(pci_dev);
-
-	if (chip == NULL) {
-		dev_err(&pci_dev->dev, "No device data found\n");
-		return;
-	}
-
-	spin_lock(&driver_lock);
-
-	list_del(&chip->list);
-
-	spin_unlock(&driver_lock);
-
-	pci_set_drvdata(pci_dev, NULL);
-	misc_deregister(&chip->vendor->miscdev);
-
-	device_remove_file(&pci_dev->dev, &dev_attr_pubek);
-	device_remove_file(&pci_dev->dev, &dev_attr_pcrs);
-	device_remove_file(&pci_dev->dev, &dev_attr_caps);
-
-	pci_disable_device(pci_dev);
-
-	dev_mask[chip->dev_num / 32] &= !(1 << (chip->dev_num % 32));
-
-	kfree(chip);
-
-	pci_dev_put(pci_dev);
-}
-
-EXPORT_SYMBOL_GPL(tpm_remove);
-
-static u8 savestate[] = {
-	0, 193,			/* TPM_TAG_RQU_COMMAND */
-	0, 0, 0, 10,		/* blob length (in bytes) */
-	0, 0, 0, 152		/* TPM_ORD_SaveState */
-};
-
-/*
- * We are about to suspend. Save the TPM state
- * so that it can be restored.
- */
-int tpm_pm_suspend(struct pci_dev *pci_dev, pm_message_t pm_state)
-{
-	struct tpm_chip *chip = pci_get_drvdata(pci_dev);
-	if (chip == NULL)
-		return -ENODEV;
-
-	tpm_transmit(chip, savestate, sizeof(savestate));
-	return 0;
-}
-
-EXPORT_SYMBOL_GPL(tpm_pm_suspend);
-
-/*
- * Resume from a power safe. The BIOS already restored
- * the TPM state.
- */
-int tpm_pm_resume(struct pci_dev *pci_dev)
-{
-	struct tpm_chip *chip = pci_get_drvdata(pci_dev);
-
-	if (chip == NULL)
-		return -ENODEV;
-
-	spin_lock(&driver_lock);
-	tpm_lpc_bus_init(pci_dev, chip->vendor->base);
-	spin_unlock(&driver_lock);
-
-	return 0;
-}
-
-EXPORT_SYMBOL_GPL(tpm_pm_resume);
-
-/*
- * Called from tpm_<specific>.c probe function only for devices 
- * the driver has determined it should claim.  Prior to calling
- * this function the specific probe function has called pci_enable_device
- * upon errant exit from this function specific probe function should call
- * pci_disable_device
- */
-int tpm_register_hardware(struct pci_dev *pci_dev,
-			  struct tpm_vendor_specific *entry)
-{
-	char devname[7];
-	struct tpm_chip *chip;
-	int i, j;
-
-	/* Driver specific per-device data */
-	chip = kmalloc(sizeof(*chip), GFP_KERNEL);
-	if (chip == NULL)
-		return -ENOMEM;
-
-	memset(chip, 0, sizeof(struct tpm_chip));
-
-	init_MUTEX(&chip->buffer_mutex);
-	init_MUTEX(&chip->tpm_mutex);
-	init_MUTEX(&chip->timer_manipulation_mutex);
-	INIT_LIST_HEAD(&chip->list);
-
-	chip->vendor = entry;
-
-	chip->dev_num = -1;
-
-	for (i = 0; i < 32; i++)
-		for (j = 0; j < 8; j++)
-			if ((dev_mask[i] & (1 << j)) == 0) {
-				chip->dev_num = i * 32 + j;
-				dev_mask[i] |= 1 << j;
-				goto dev_num_search_complete;
-			}
-
-dev_num_search_complete:
-	if (chip->dev_num < 0) {
-		dev_err(&pci_dev->dev,
-			"No available tpm device numbers\n");
-		kfree(chip);
-		return -ENODEV;
-	} else if (chip->dev_num == 0)
-		chip->vendor->miscdev.minor = TPM_MINOR;
-	else
-		chip->vendor->miscdev.minor = MISC_DYNAMIC_MINOR;
-
-	snprintf(devname, sizeof(devname), "%s%d", "tpm", chip->dev_num);
-	chip->vendor->miscdev.name = devname;
-
-	chip->vendor->miscdev.dev = &(pci_dev->dev);
-	chip->pci_dev = pci_dev_get(pci_dev);
-
-	if (misc_register(&chip->vendor->miscdev)) {
-		dev_err(&chip->pci_dev->dev,
-			"unable to misc_register %s, minor %d\n",
-			chip->vendor->miscdev.name,
-			chip->vendor->miscdev.minor);
-		pci_dev_put(pci_dev);
-		kfree(chip);
-		dev_mask[i] &= !(1 << j);
-		return -ENODEV;
-	}
-
-	pci_set_drvdata(pci_dev, chip);
-
-	list_add(&chip->list, &tpm_chip_list);
-
-	device_create_file(&pci_dev->dev, &dev_attr_pubek);
-	device_create_file(&pci_dev->dev, &dev_attr_pcrs);
-	device_create_file(&pci_dev->dev, &dev_attr_caps);
-
-	return 0;
-}
-
-EXPORT_SYMBOL_GPL(tpm_register_hardware);
-
-static int __init init_tpm(void)
-{
-	return 0;
-}
-
-static void __exit cleanup_tpm(void)
-{
-
-}
-
-module_init(init_tpm);
-module_exit(cleanup_tpm);
-
-MODULE_AUTHOR("Leendert van Doorn (leendert@watson.ibm.com)");
-MODULE_DESCRIPTION("TPM Driver");
-MODULE_VERSION("2.0");
-MODULE_LICENSE("GPL");