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    SubjectRe: 2.6.12 breaks 8139cp
    From
    Date

    > You wouldn't happen to have just your patches available?

    Here is the tpm portion of -mm patch

    --- linux-2.6.12/drivers/char/tpm/tpm_atmel.c 2005-06-17 16:03:59.000000000 -0700
    +++ 25/drivers/char/tpm/tpm_atmel.c 2005-06-26 02:20:35.000000000 -0700
    @@ -22,17 +22,23 @@
    #include "tpm.h"

    /* Atmel definitions */
    -#define TPM_ATML_BASE 0x400
    +enum tpm_atmel_addr {
    + TPM_ATMEL_BASE_ADDR_LO = 0x08,
    + TPM_ATMEL_BASE_ADDR_HI = 0x09
    +};

    /* write status bits */
    -#define ATML_STATUS_ABORT 0x01
    -#define ATML_STATUS_LASTBYTE 0x04
    -
    +enum tpm_atmel_write_status {
    + ATML_STATUS_ABORT = 0x01,
    + ATML_STATUS_LASTBYTE = 0x04
    +};
    /* read status bits */
    -#define ATML_STATUS_BUSY 0x01
    -#define ATML_STATUS_DATA_AVAIL 0x02
    -#define ATML_STATUS_REWRITE 0x04
    -
    +enum tpm_atmel_read_status {
    + ATML_STATUS_BUSY = 0x01,
    + ATML_STATUS_DATA_AVAIL = 0x02,
    + ATML_STATUS_REWRITE = 0x04,
    + ATML_STATUS_READY = 0x08
    +};

    static int tpm_atml_recv(struct tpm_chip *chip, u8 * buf, size_t count)
    {
    @@ -121,13 +127,29 @@ static struct file_operations atmel_ops
    .release = tpm_release,
    };

    +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* atmel_attrs[] = {
    + &dev_attr_pubek.attr,
    + &dev_attr_pcrs.attr,
    + &dev_attr_caps.attr,
    + &dev_attr_cancel.attr,
    + 0,
    +};
    +
    +static struct attribute_group atmel_attr_grp = { .attrs = atmel_attrs };
    +
    static struct tpm_vendor_specific tpm_atmel = {
    .recv = tpm_atml_recv,
    .send = tpm_atml_send,
    .cancel = tpm_atml_cancel,
    .req_complete_mask = ATML_STATUS_BUSY | ATML_STATUS_DATA_AVAIL,
    .req_complete_val = ATML_STATUS_DATA_AVAIL,
    - .base = TPM_ATML_BASE,
    + .req_canceled = ATML_STATUS_READY,
    + .attr_group = &atmel_attr_grp,
    .miscdev = { .fops = &atmel_ops, },
    };

    @@ -136,27 +158,29 @@ static int __devinit tpm_atml_init(struc
    {
    u8 version[4];
    int rc = 0;
    + int lo, hi;

    if (pci_enable_device(pci_dev))
    return -EIO;

    - if (tpm_lpc_bus_init(pci_dev, TPM_ATML_BASE)) {
    - rc = -ENODEV;
    - goto out_err;
    - }
    + lo = tpm_read_index(TPM_ADDR, TPM_ATMEL_BASE_ADDR_LO);
    + hi = tpm_read_index(TPM_ADDR, TPM_ATMEL_BASE_ADDR_HI);
    +
    + tpm_atmel.base = (hi<<8)|lo;
    + dev_dbg( &pci_dev->dev, "Operating with base: 0x%x\n", tpm_atmel.base);

    /* verify that it is an Atmel part */
    - if (tpm_read_index(4) != 'A' || tpm_read_index(5) != 'T'
    - || tpm_read_index(6) != 'M' || tpm_read_index(7) != 'L') {
    + if (tpm_read_index(TPM_ADDR, 4) != 'A' || tpm_read_index(TPM_ADDR, 5) != 'T'
    + || tpm_read_index(TPM_ADDR, 6) != 'M' || tpm_read_index(TPM_ADDR, 7) != 'L') {
    rc = -ENODEV;
    goto out_err;
    }

    /* query chip for its version number */
    - if ((version[0] = tpm_read_index(0x00)) != 0xFF) {
    - version[1] = tpm_read_index(0x01);
    - version[2] = tpm_read_index(0x02);
    - version[3] = tpm_read_index(0x03);
    + if ((version[0] = tpm_read_index(TPM_ADDR, 0x00)) != 0xFF) {
    + version[1] = tpm_read_index(TPM_ADDR, 0x01);
    + version[2] = tpm_read_index(TPM_ADDR, 0x02);
    + version[3] = tpm_read_index(TPM_ADDR, 0x03);
    } else {
    dev_info(&pci_dev->dev, "version query failed\n");
    rc = -ENODEV;
    @@ -183,6 +207,7 @@ static struct pci_device_id tpm_pci_tbl[
    {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_AMD, PCI_DEVICE_ID_AMD_8111_LPC)},
    + {PCI_DEVICE(PCI_VENDOR_ID_SERVERWORKS, PCI_DEVICE_ID_SERVERWORKS_CSB6LPC)},
    {0,}
    };

    --- linux-2.6.12/drivers/char/tpm/tpm.c 2005-06-17 16:03:59.000000000 -0700
    +++ 25/drivers/char/tpm/tpm.c 2005-06-26 02:20:35.000000000 -0700
    @@ -19,7 +19,7 @@
    *
    * Note, the TPM chip is not interrupt driven (only polling)
    * and can have very long timeouts (minutes!). Hence the unusual
    - * calls to schedule_timeout.
    + * calls to msleep.
    *
    */

    @@ -28,19 +28,16 @@
    #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
    +enum tpm_const {
    + TPM_MINOR = 224, /* officially assigned */
    + TPM_BUFSIZE = 2048,
    + TPM_NUM_DEVICES = 256,
    + TPM_NUM_MASK_ENTRIES = TPM_NUM_DEVICES / (8 * sizeof(int))
    +};

    static LIST_HEAD(tpm_chip_list);
    static DEFINE_SPINLOCK(driver_lock);
    -static int dev_mask[32];
    +static int dev_mask[TPM_NUM_MASK_ENTRIES];

    static void user_reader_timeout(unsigned long ptr)
    {
    @@ -52,92 +49,17 @@ static void user_reader_timeout(unsigned
    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;
    + ssize_t rc;
    u32 count;
    - __be32 *native_size;
    + unsigned long stop;

    - native_size = (__force __be32 *) (buf + 2);
    - count = be32_to_cpu(*native_size);
    + count = be32_to_cpu(*((__be32 *) (buf + 2)));

    if (count == 0)
    return -ENODATA;
    @@ -149,53 +71,49 @@ static ssize_t tpm_transmit(struct tpm_c

    down(&chip->tpm_mutex);

    - if ((len = chip->vendor->send(chip, (u8 *) buf, count)) < 0) {
    + if ((rc = chip->vendor->send(chip, (u8 *) buf, count)) < 0) {
    dev_err(&chip->pci_dev->dev,
    - "tpm_transmit: tpm_send: error %zd\n", len);
    - return len;
    + "tpm_transmit: tpm_send: error %zd\n", rc);
    + goto out;
    }

    - 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);
    -
    + stop = jiffies + 2 * 60 * HZ;
    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);
    +
    + if ((status == chip->vendor->req_canceled)) {
    + dev_err(&chip->pci_dev->dev, "Operation Canceled\n");
    + rc = -ECANCELED;
    + goto out;
    + }
    +
    + msleep(TPM_TIMEOUT); /* CHECK */
    rmb();
    - } while (!chip->time_expired);
    + } while (time_before(jiffies, stop));


    chip->vendor->cancel(chip);
    - dev_err(&chip->pci_dev->dev, "Time expired\n");
    - up(&chip->tpm_mutex);
    - return -EIO;
    + dev_err(&chip->pci_dev->dev, "Operation Timed out\n");
    + rc = -ETIME;
    + goto out;

    out_recv:
    - len = chip->vendor->recv(chip, (u8 *) buf, bufsiz);
    - if (len < 0)
    + rc = chip->vendor->recv(chip, (u8 *) buf, bufsiz);
    + if (rc < 0)
    dev_err(&chip->pci_dev->dev,
    - "tpm_transmit: tpm_recv: error %zd\n", len);
    + "tpm_transmit: tpm_recv: error %zd\n", rc);
    +out:
    up(&chip->tpm_mutex);
    - return len;
    + return rc;
    }

    #define TPM_DIGEST_SIZE 20
    #define CAP_PCR_RESULT_SIZE 18
    -static u8 cap_pcr[] = {
    +static const u8 cap_pcr[] = {
    0, 193, /* TPM_TAG_RQU_COMMAND */
    0, 0, 0, 22, /* length */
    0, 0, 0, 101, /* TPM_ORD_GetCapability */
    @@ -205,75 +123,94 @@ static u8 cap_pcr[] = {
    };

    #define READ_PCR_RESULT_SIZE 30
    -static u8 pcrread[] = {
    +static const 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, char *buf)
    +ssize_t tpm_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;
    + int i, j, num_pcrs;
    + __be32 index;
    char *str = buf;

    struct tpm_chip *chip =
    - pci_get_drvdata(container_of(dev, struct pci_dev, dev));
    + pci_get_drvdata(to_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;
    + < CAP_PCR_RESULT_SIZE) {
    + dev_dbg(&chip->pci_dev->dev, "A TPM error (%d) occurred "
    + "attempting to determine the number of PCRS\n",
    + be32_to_cpu(*((__be32 *) (data + 6))));
    + return 0;
    + }

    - num_pcrs = be32_to_cpu(*((__force __be32 *) (data + 14)));
    + num_pcrs = be32_to_cpu(*((__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;
    + < READ_PCR_RESULT_SIZE){
    + dev_dbg(&chip->pci_dev->dev, "A TPM error (%d) occurred"
    + " attempting to read PCR %d of %d\n",
    + be32_to_cpu(*((__be32 *) (data + 6))), i, num_pcrs);
    + goto out;
    + }
    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");
    }
    +out:
    return str - buf;
    }
    -
    -static DEVICE_ATTR(pcrs, S_IRUGO, show_pcrs, NULL);
    +EXPORT_SYMBOL_GPL(tpm_show_pcrs);

    #define READ_PUBEK_RESULT_SIZE 314
    -static u8 readpubek[] = {
    +static const 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, char *buf)
    +ssize_t tpm_show_pubek(struct device *dev, struct device_attribute *attr,
    + char *buf)
    {
    - u8 data[READ_PUBEK_RESULT_SIZE];
    + u8 *data;
    ssize_t len;
    - __be32 *native_val;
    - int i;
    + int i, rc;
    char *str = buf;

    struct tpm_chip *chip =
    - pci_get_drvdata(container_of(dev, struct pci_dev, dev));
    + pci_get_drvdata(to_pci_dev(dev));
    if (chip == NULL)
    return -ENODEV;

    + data = kmalloc(READ_PUBEK_RESULT_SIZE, GFP_KERNEL);
    + if (!data)
    + return -ENOMEM;
    +
    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;
    + if ((len = tpm_transmit(chip, data, READ_PUBEK_RESULT_SIZE)) <
    + READ_PUBEK_RESULT_SIZE) {
    + dev_dbg(&chip->pci_dev->dev, "A TPM error (%d) occurred "
    + "attempting to read the PUBEK\n",
    + be32_to_cpu(*((__be32 *) (data + 6))));
    + rc = 0;
    + goto out;
    + }

    /*
    ignore header 10 bytes
    @@ -286,8 +223,6 @@ static ssize_t show_pubek(struct device
    ignore checksum 20 bytes
    */

    - native_val = (__force __be32 *) (data + 34);
    -
    str +=
    sprintf(str,
    "Algorithm: %02X %02X %02X %02X\nEncscheme: %02X %02X\n"
    @@ -298,21 +233,23 @@ static ssize_t show_pubek(struct device
    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)
    - );
    + be32_to_cpu(*((__be32 *) (data + 34))));

    for (i = 0; i < 256; i++) {
    - str += sprintf(str, "%02X ", data[i + 39]);
    + str += sprintf(str, "%02X ", data[i + 38]);
    if ((i + 1) % 16 == 0)
    str += sprintf(str, "\n");
    }
    - return str - buf;
    + rc = str - buf;
    +out:
    + kfree(data);
    + return rc;
    }

    -static DEVICE_ATTR(pubek, S_IRUGO, show_pubek, NULL);
    +EXPORT_SYMBOL_GPL(tpm_show_pubek);

    #define CAP_VER_RESULT_SIZE 18
    -static u8 cap_version[] = {
    +static const u8 cap_version[] = {
    0, 193, /* TPM_TAG_RQU_COMMAND */
    0, 0, 0, 18, /* length */
    0, 0, 0, 101, /* TPM_ORD_GetCapability */
    @@ -321,7 +258,7 @@ static u8 cap_version[] = {
    };

    #define CAP_MANUFACTURER_RESULT_SIZE 18
    -static u8 cap_manufacturer[] = {
    +static const u8 cap_manufacturer[] = {
    0, 193, /* TPM_TAG_RQU_COMMAND */
    0, 0, 0, 22, /* length */
    0, 0, 0, 101, /* TPM_ORD_GetCapability */
    @@ -330,14 +267,15 @@ static u8 cap_manufacturer[] = {
    0, 0, 1, 3
    };

    -static ssize_t show_caps(struct device *dev, char *buf)
    +ssize_t tpm_show_caps(struct device *dev, struct device_attribute *attr,
    + char *buf)
    {
    - u8 data[READ_PUBEK_RESULT_SIZE];
    + u8 data[sizeof(cap_manufacturer)];
    ssize_t len;
    char *str = buf;

    struct tpm_chip *chip =
    - pci_get_drvdata(container_of(dev, struct pci_dev, dev));
    + pci_get_drvdata(to_pci_dev(dev));
    if (chip == NULL)
    return -ENODEV;

    @@ -348,7 +286,7 @@ static ssize_t show_caps(struct device *
    return len;

    str += sprintf(str, "Manufacturer: 0x%x\n",
    - be32_to_cpu(*(data + 14)));
    + be32_to_cpu(*((__be32 *) (data + 14))));

    memcpy(data, cap_version, sizeof(cap_version));

    @@ -363,8 +301,20 @@ static ssize_t show_caps(struct device *

    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);

    -static DEVICE_ATTR(caps, S_IRUGO, show_caps, NULL);

    /*
    * Device file system interface to the TPM
    @@ -422,24 +372,15 @@ 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);
    + file->private_data = NULL;
    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);
    + del_singleshot_timer_sync(&chip->user_read_timer);
    atomic_set(&chip->data_pending, 0);
    -
    pci_dev_put(chip->pci_dev);
    + kfree(chip->data_buffer);
    + spin_unlock(&driver_lock);
    return 0;
    }

    @@ -453,10 +394,8 @@ ssize_t tpm_write(struct file * file, co

    /* 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);
    - }
    + while (atomic_read(&chip->data_pending) != 0)
    + msleep(TPM_TIMEOUT);

    down(&chip->buffer_mutex);

    @@ -476,13 +415,7 @@ ssize_t tpm_write(struct file * file, co
    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);
    + mod_timer(&chip->user_read_timer, jiffies + (60 * HZ));

    return in_size;
    }
    @@ -493,29 +426,19 @@ ssize_t tpm_read(struct file * file, cha
    size_t size, loff_t * off)
    {
    struct tpm_chip *chip = file->private_data;
    - int ret_size = -ENODATA;
    + int ret_size;

    - 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);
    + del_singleshot_timer_sync(&chip->user_read_timer);
    + ret_size = atomic_read(&chip->data_pending);
    + atomic_set(&chip->data_pending, 0);
    + if (ret_size > 0) { /* relay data */
    + if (size < ret_size)
    + ret_size = size;

    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;
    - }
    - }
    + if (copy_to_user
    + ((void __user *) buf, chip->data_buffer, ret_size))
    + ret_size = -EFAULT;
    up(&chip->buffer_mutex);
    }

    @@ -541,14 +464,13 @@ void __devexit tpm_remove(struct pci_dev

    pci_set_drvdata(pci_dev, NULL);
    misc_deregister(&chip->vendor->miscdev);
    + kfree(&chip->vendor->miscdev.name);

    - 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);
    + sysfs_remove_group(&pci_dev->dev.kobj, chip->vendor->attr_group);

    pci_disable_device(pci_dev);

    - dev_mask[chip->dev_num / 32] &= !(1 << (chip->dev_num % 32));
    + dev_mask[chip->dev_num / TPM_NUM_MASK_ENTRIES ] &= !(1 << (chip->dev_num % TPM_NUM_MASK_ENTRIES));

    kfree(chip);

    @@ -590,10 +512,6 @@ int tpm_pm_resume(struct pci_dev *pci_de
    if (chip == NULL)
    return -ENODEV;

    - spin_lock(&driver_lock);
    - tpm_lpc_bus_init(pci_dev, chip->vendor->base);
    - spin_unlock(&driver_lock);
    -
    return 0;
    }

    @@ -609,7 +527,9 @@ EXPORT_SYMBOL_GPL(tpm_pm_resume);
    int tpm_register_hardware(struct pci_dev *pci_dev,
    struct tpm_vendor_specific *entry)
    {
    - char devname[7];
    +#define DEVNAME_SIZE 7
    +
    + char *devname;
    struct tpm_chip *chip;
    int i, j;

    @@ -622,17 +542,21 @@ int tpm_register_hardware(struct pci_dev

    init_MUTEX(&chip->buffer_mutex);
    init_MUTEX(&chip->tpm_mutex);
    - init_MUTEX(&chip->timer_manipulation_mutex);
    INIT_LIST_HEAD(&chip->list);

    + init_timer(&chip->user_read_timer);
    + chip->user_read_timer.function = user_reader_timeout;
    + chip->user_read_timer.data = (unsigned long) chip;
    +
    chip->vendor = entry;

    chip->dev_num = -1;

    - for (i = 0; i < 32; i++)
    - for (j = 0; j < 8; j++)
    + for (i = 0; i < TPM_NUM_MASK_ENTRIES; i++)
    + for (j = 0; j < 8 * sizeof(int); j++)
    if ((dev_mask[i] & (1 << j)) == 0) {
    - chip->dev_num = i * 32 + j;
    + chip->dev_num =
    + i * TPM_NUM_MASK_ENTRIES + j;
    dev_mask[i] |= 1 << j;
    goto dev_num_search_complete;
    }
    @@ -648,7 +572,8 @@ dev_num_search_complete:
    else
    chip->vendor->miscdev.minor = MISC_DYNAMIC_MINOR;

    - snprintf(devname, sizeof(devname), "%s%d", "tpm", chip->dev_num);
    + devname = kmalloc(DEVNAME_SIZE, GFP_KERNEL);
    + scnprintf(devname, DEVNAME_SIZE, "%s%d", "tpm", chip->dev_num);
    chip->vendor->miscdev.name = devname;

    chip->vendor->miscdev.dev = &(pci_dev->dev);
    @@ -665,31 +590,20 @@ dev_num_search_complete:
    return -ENODEV;
    }

    + spin_lock(&driver_lock);
    +
    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;
    -}
    + spin_unlock(&driver_lock);

    -EXPORT_SYMBOL_GPL(tpm_register_hardware);
    + sysfs_create_group(&pci_dev->dev.kobj, chip->vendor->attr_group);

    -static int __init init_tpm(void)
    -{
    return 0;
    }

    -static void __exit cleanup_tpm(void)
    -{
    -
    -}
    -
    -module_init(init_tpm);
    -module_exit(cleanup_tpm);
    +EXPORT_SYMBOL_GPL(tpm_register_hardware);

    MODULE_AUTHOR("Leendert van Doorn (leendert@watson.ibm.com)");
    MODULE_DESCRIPTION("TPM Driver");
    --- linux-2.6.12/drivers/char/tpm/tpm.h 2005-06-17 16:03:59.000000000 -0700
    +++ 25/drivers/char/tpm/tpm.h 2005-06-26 02:20:35.000000000 -0700
    @@ -25,23 +25,38 @@
    #include <linux/fs.h>
    #include <linux/miscdevice.h>

    -#define TPM_TIMEOUT msecs_to_jiffies(5)
    +enum tpm_timeout {
    + TPM_TIMEOUT = 5, /* msecs */
    +};

    /* TPM addresses */
    -#define TPM_ADDR 0x4E
    -#define TPM_DATA 0x4F
    +enum tpm_addr {
    + TPM_SUPERIO_ADDR = 0x2E,
    + TPM_ADDR = 0x4E,
    +};
    +
    +extern ssize_t tpm_show_pubek(struct device *, struct device_attribute *attr,
    + char *);
    +extern ssize_t tpm_show_pcrs(struct device *, struct device_attribute *attr,
    + char *);
    +extern ssize_t tpm_show_caps(struct device *, struct device_attribute *attr,
    + char *);
    +extern ssize_t tpm_store_cancel(struct device *, struct device_attribute *attr,
    + const char *, size_t);

    struct tpm_chip;

    struct tpm_vendor_specific {
    u8 req_complete_mask;
    u8 req_complete_val;
    + u8 req_canceled;
    u16 base; /* TPM base address */

    int (*recv) (struct tpm_chip *, u8 *, size_t);
    int (*send) (struct tpm_chip *, u8 *, size_t);
    void (*cancel) (struct tpm_chip *);
    struct miscdevice miscdev;
    + struct attribute_group *attr_group;
    };

    struct tpm_chip {
    @@ -58,29 +73,24 @@ struct tpm_chip {

    struct timer_list user_read_timer; /* user needs to claim result */
    struct semaphore tpm_mutex; /* tpm is processing */
    - struct timer_list device_timer; /* tpm is processing */
    - struct semaphore timer_manipulation_mutex;

    struct tpm_vendor_specific *vendor;

    struct list_head list;
    };

    -static inline int tpm_read_index(int index)
    +static inline int tpm_read_index(int base, int index)
    {
    - outb(index, TPM_ADDR);
    - return inb(TPM_DATA) & 0xFF;
    + outb(index, base);
    + return inb(base+1) & 0xFF;
    }

    -static inline void tpm_write_index(int index, int value)
    +static inline void tpm_write_index(int base, int index, int value)
    {
    - outb(index, TPM_ADDR);
    - outb(value & 0xFF, TPM_DATA);
    + outb(index, base);
    + outb(value & 0xFF, base+1);
    }

    -extern void tpm_time_expired(unsigned long);
    -extern int tpm_lpc_bus_init(struct pci_dev *, u16);
    -
    extern int tpm_register_hardware(struct pci_dev *,
    struct tpm_vendor_specific *);
    extern int tpm_open(struct inode *, struct file *);
    --- linux-2.6.12/drivers/char/tpm/tpm_nsc.c 2005-06-17 16:03:59.000000000 -0700
    +++ 25/drivers/char/tpm/tpm_nsc.c 2005-06-26 02:20:35.000000000 -0700
    @@ -22,43 +22,52 @@
    #include "tpm.h"

    /* National definitions */
    -#define TPM_NSC_BASE 0x360
    -#define TPM_NSC_IRQ 0x07
    +enum tpm_nsc_addr{
    + TPM_NSC_IRQ = 0x07,
    + TPM_NSC_BASE0_HI = 0x60,
    + TPM_NSC_BASE0_LO = 0x61,
    + TPM_NSC_BASE1_HI = 0x62,
    + TPM_NSC_BASE1_LO = 0x63
    +};
    +
    +enum tpm_nsc_index {
    + NSC_LDN_INDEX = 0x07,
    + NSC_SID_INDEX = 0x20,
    + NSC_LDC_INDEX = 0x30,
    + NSC_DIO_INDEX = 0x60,
    + NSC_CIO_INDEX = 0x62,
    + NSC_IRQ_INDEX = 0x70,
    + NSC_ITS_INDEX = 0x71
    +};

    -#define NSC_LDN_INDEX 0x07
    -#define NSC_SID_INDEX 0x20
    -#define NSC_LDC_INDEX 0x30
    -#define NSC_DIO_INDEX 0x60
    -#define NSC_CIO_INDEX 0x62
    -#define NSC_IRQ_INDEX 0x70
    -#define NSC_ITS_INDEX 0x71
    -
    -#define NSC_STATUS 0x01
    -#define NSC_COMMAND 0x01
    -#define NSC_DATA 0x00
    +enum tpm_nsc_status_loc {
    + NSC_STATUS = 0x01,
    + NSC_COMMAND = 0x01,
    + NSC_DATA = 0x00
    +};

    /* status bits */
    -#define NSC_STATUS_OBF 0x01 /* output buffer full */
    -#define NSC_STATUS_IBF 0x02 /* input buffer full */
    -#define NSC_STATUS_F0 0x04 /* F0 */
    -#define NSC_STATUS_A2 0x08 /* A2 */
    -#define NSC_STATUS_RDY 0x10 /* ready to receive command */
    -#define NSC_STATUS_IBR 0x20 /* ready to receive data */
    +enum tpm_nsc_status {
    + NSC_STATUS_OBF = 0x01, /* output buffer full */
    + NSC_STATUS_IBF = 0x02, /* input buffer full */
    + NSC_STATUS_F0 = 0x04, /* F0 */
    + NSC_STATUS_A2 = 0x08, /* A2 */
    + NSC_STATUS_RDY = 0x10, /* ready to receive command */
    + NSC_STATUS_IBR = 0x20 /* ready to receive data */
    +};

    /* command bits */
    -#define NSC_COMMAND_NORMAL 0x01 /* normal mode */
    -#define NSC_COMMAND_EOC 0x03
    -#define NSC_COMMAND_CANCEL 0x22
    -
    +enum tpm_nsc_cmd_mode {
    + NSC_COMMAND_NORMAL = 0x01, /* normal mode */
    + NSC_COMMAND_EOC = 0x03,
    + NSC_COMMAND_CANCEL = 0x22
    +};
    /*
    * Wait for a certain status to appear
    */
    static int wait_for_stat(struct tpm_chip *chip, u8 mask, u8 val, u8 * data)
    {
    - int expired = 0;
    - struct timer_list status_timer =
    - TIMER_INITIALIZER(tpm_time_expired, jiffies + 10 * HZ,
    - (unsigned long) &expired);
    + unsigned long stop;

    /* status immediately available check */
    *data = inb(chip->vendor->base + NSC_STATUS);
    @@ -66,17 +75,14 @@ static int wait_for_stat(struct tpm_chip
    return 0;

    /* wait for status */
    - add_timer(&status_timer);
    + stop = jiffies + 10 * HZ;
    do {
    - set_current_state(TASK_UNINTERRUPTIBLE);
    - schedule_timeout(TPM_TIMEOUT);
    + msleep(TPM_TIMEOUT);
    *data = inb(chip->vendor->base + 1);
    - if ((*data & mask) == val) {
    - del_singleshot_timer_sync(&status_timer);
    + if ((*data & mask) == val)
    return 0;
    - }
    }
    - while (!expired);
    + while (time_before(jiffies, stop));

    return -EBUSY;
    }
    @@ -84,10 +90,7 @@ static int wait_for_stat(struct tpm_chip
    static int nsc_wait_for_ready(struct tpm_chip *chip)
    {
    int status;
    - int expired = 0;
    - struct timer_list status_timer =
    - TIMER_INITIALIZER(tpm_time_expired, jiffies + 100,
    - (unsigned long) &expired);
    + unsigned long stop;

    /* status immediately available check */
    status = inb(chip->vendor->base + NSC_STATUS);
    @@ -97,19 +100,16 @@ static int nsc_wait_for_ready(struct tpm
    return 0;

    /* wait for status */
    - add_timer(&status_timer);
    + stop = jiffies + 100;
    do {
    - set_current_state(TASK_UNINTERRUPTIBLE);
    - schedule_timeout(TPM_TIMEOUT);
    + msleep(TPM_TIMEOUT);
    status = inb(chip->vendor->base + NSC_STATUS);
    if (status & NSC_STATUS_OBF)
    status = inb(chip->vendor->base + NSC_DATA);
    - if (status & NSC_STATUS_RDY) {
    - del_singleshot_timer_sync(&status_timer);
    + if (status & NSC_STATUS_RDY)
    return 0;
    - }
    }
    - while (!expired);
    + while (time_before(jiffies, stop));

    dev_info(&chip->pci_dev->dev, "wait for ready failed\n");
    return -EBUSY;
    @@ -150,7 +150,8 @@ static int tpm_nsc_recv(struct tpm_chip
    *p = inb(chip->vendor->base + NSC_DATA);
    }

    - if ((data & NSC_STATUS_F0) == 0) {
    + if ((data & NSC_STATUS_F0) == 0 &&
    + (wait_for_stat(chip, NSC_STATUS_F0, NSC_STATUS_F0, &data) < 0)) {
    dev_err(&chip->pci_dev->dev, "F0 not set\n");
    return -EIO;
    }
    @@ -228,100 +229,95 @@ static struct file_operations nsc_ops =
    .release = tpm_release,
    };

    +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 * nsc_attrs[] = {
    + &dev_attr_pubek.attr,
    + &dev_attr_pcrs.attr,
    + &dev_attr_caps.attr,
    + &dev_attr_cancel.attr,
    + 0,
    +};
    +
    +static struct attribute_group nsc_attr_grp = { .attrs = nsc_attrs };
    +
    static struct tpm_vendor_specific tpm_nsc = {
    .recv = tpm_nsc_recv,
    .send = tpm_nsc_send,
    .cancel = tpm_nsc_cancel,
    .req_complete_mask = NSC_STATUS_OBF,
    .req_complete_val = NSC_STATUS_OBF,
    - .base = TPM_NSC_BASE,
    + .req_canceled = NSC_STATUS_RDY,
    + .attr_group = &nsc_attr_grp,
    .miscdev = { .fops = &nsc_ops, },
    -
    };

    static int __devinit tpm_nsc_init(struct pci_dev *pci_dev,
    const struct pci_device_id *pci_id)
    {
    int rc = 0;
    + int lo, hi;
    + int nscAddrBase = TPM_ADDR;
    +

    if (pci_enable_device(pci_dev))
    return -EIO;

    - if (tpm_lpc_bus_init(pci_dev, TPM_NSC_BASE)) {
    - rc = -ENODEV;
    - goto out_err;
    - }
    + /* select PM channel 1 */
    + tpm_write_index(nscAddrBase,NSC_LDN_INDEX, 0x12);

    /* verify that it is a National part (SID) */
    - if (tpm_read_index(NSC_SID_INDEX) != 0xEF) {
    - rc = -ENODEV;
    - goto out_err;
    + if (tpm_read_index(TPM_ADDR, NSC_SID_INDEX) != 0xEF) {
    + nscAddrBase = (tpm_read_index(TPM_SUPERIO_ADDR, 0x2C)<<8)|
    + (tpm_read_index(TPM_SUPERIO_ADDR, 0x2B)&0xFE);
    + if (tpm_read_index(nscAddrBase, NSC_SID_INDEX) != 0xF6) {
    + rc = -ENODEV;
    + goto out_err;
    + }
    }

    + hi = tpm_read_index(nscAddrBase, TPM_NSC_BASE0_HI);
    + lo = tpm_read_index(nscAddrBase, TPM_NSC_BASE0_LO);
    + tpm_nsc.base = (hi<<8) | lo;
    +
    dev_dbg(&pci_dev->dev, "NSC TPM detected\n");
    dev_dbg(&pci_dev->dev,
    "NSC LDN 0x%x, SID 0x%x, SRID 0x%x\n",
    - tpm_read_index(0x07), tpm_read_index(0x20),
    - tpm_read_index(0x27));
    + tpm_read_index(nscAddrBase,0x07), tpm_read_index(nscAddrBase,0x20),
    + tpm_read_index(nscAddrBase,0x27));
    dev_dbg(&pci_dev->dev,
    "NSC SIOCF1 0x%x SIOCF5 0x%x SIOCF6 0x%x SIOCF8 0x%x\n",
    - tpm_read_index(0x21), tpm_read_index(0x25),
    - tpm_read_index(0x26), tpm_read_index(0x28));
    + tpm_read_index(nscAddrBase,0x21), tpm_read_index(nscAddrBase,0x25),
    + tpm_read_index(nscAddrBase,0x26), tpm_read_index(nscAddrBase,0x28));
    dev_dbg(&pci_dev->dev, "NSC IO Base0 0x%x\n",
    - (tpm_read_index(0x60) << 8) | tpm_read_index(0x61));
    + (tpm_read_index(nscAddrBase,0x60) << 8) | tpm_read_index(nscAddrBase,0x61));
    dev_dbg(&pci_dev->dev, "NSC IO Base1 0x%x\n",
    - (tpm_read_index(0x62) << 8) | tpm_read_index(0x63));
    + (tpm_read_index(nscAddrBase,0x62) << 8) | tpm_read_index(nscAddrBase,0x63));
    dev_dbg(&pci_dev->dev, "NSC Interrupt number and wakeup 0x%x\n",
    - tpm_read_index(0x70));
    + tpm_read_index(nscAddrBase,0x70));
    dev_dbg(&pci_dev->dev, "NSC IRQ type select 0x%x\n",
    - tpm_read_index(0x71));
    + tpm_read_index(nscAddrBase,0x71));
    dev_dbg(&pci_dev->dev,
    "NSC DMA channel select0 0x%x, select1 0x%x\n",
    - tpm_read_index(0x74), tpm_read_index(0x75));
    + tpm_read_index(nscAddrBase,0x74), tpm_read_index(nscAddrBase,0x75));
    dev_dbg(&pci_dev->dev,
    "NSC Config "
    "0x%x 0x%x 0x%x 0x%x 0x%x 0x%x 0x%x 0x%x 0x%x 0x%x\n",
    - tpm_read_index(0xF0), tpm_read_index(0xF1),
    - tpm_read_index(0xF2), tpm_read_index(0xF3),
    - tpm_read_index(0xF4), tpm_read_index(0xF5),
    - tpm_read_index(0xF6), tpm_read_index(0xF7),
    - tpm_read_index(0xF8), tpm_read_index(0xF9));
    + tpm_read_index(nscAddrBase,0xF0), tpm_read_index(nscAddrBase,0xF1),
    + tpm_read_index(nscAddrBase,0xF2), tpm_read_index(nscAddrBase,0xF3),
    + tpm_read_index(nscAddrBase,0xF4), tpm_read_index(nscAddrBase,0xF5),
    + tpm_read_index(nscAddrBase,0xF6), tpm_read_index(nscAddrBase,0xF7),
    + tpm_read_index(nscAddrBase,0xF8), tpm_read_index(nscAddrBase,0xF9));

    dev_info(&pci_dev->dev,
    - "NSC PC21100 TPM revision %d\n",
    - tpm_read_index(0x27) & 0x1F);
    -
    - if (tpm_read_index(NSC_LDC_INDEX) == 0)
    - dev_info(&pci_dev->dev, ": NSC TPM not active\n");
    -
    - /* select PM channel 1 */
    - tpm_write_index(NSC_LDN_INDEX, 0x12);
    - tpm_read_index(NSC_LDN_INDEX);
    -
    - /* disable the DPM module */
    - tpm_write_index(NSC_LDC_INDEX, 0);
    - tpm_read_index(NSC_LDC_INDEX);
    -
    - /* set the data register base addresses */
    - tpm_write_index(NSC_DIO_INDEX, TPM_NSC_BASE >> 8);
    - tpm_write_index(NSC_DIO_INDEX + 1, TPM_NSC_BASE);
    - tpm_read_index(NSC_DIO_INDEX);
    - tpm_read_index(NSC_DIO_INDEX + 1);
    -
    - /* set the command register base addresses */
    - tpm_write_index(NSC_CIO_INDEX, (TPM_NSC_BASE + 1) >> 8);
    - tpm_write_index(NSC_CIO_INDEX + 1, (TPM_NSC_BASE + 1));
    - tpm_read_index(NSC_DIO_INDEX);
    - tpm_read_index(NSC_DIO_INDEX + 1);
    -
    - /* set the interrupt number to be used for the host interface */
    - tpm_write_index(NSC_IRQ_INDEX, TPM_NSC_IRQ);
    - tpm_write_index(NSC_ITS_INDEX, 0x00);
    - tpm_read_index(NSC_IRQ_INDEX);
    + "NSC TPM revision %d\n",
    + tpm_read_index(nscAddrBase, 0x27) & 0x1F);

    /* enable the DPM module */
    - tpm_write_index(NSC_LDC_INDEX, 0x01);
    - tpm_read_index(NSC_LDC_INDEX);
    + tpm_write_index(nscAddrBase, NSC_LDC_INDEX, 0x01);

    if ((rc = tpm_register_hardware(pci_dev, &tpm_nsc)) < 0)
    goto out_err;
    @@ -339,6 +335,9 @@ static struct pci_device_id tpm_pci_tbl[
    {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_ICH7_0)},
    {PCI_DEVICE(PCI_VENDOR_ID_AMD, PCI_DEVICE_ID_AMD_8111_LPC)},
    {0,}
    };
    --- linux-2.6.12/include/linux/pci_ids.h 2005-06-17 16:04:03.000000000 -0700
    +++ 25/include/linux/pci_ids.h 2005-06-26 02:21:57.000000000 -0700
    @@ -1567,6 +1571,7 @@
    #define PCI_DEVICE_ID_SERVERWORKS_OSB4USB 0x0220
    #define PCI_DEVICE_ID_SERVERWORKS_CSB5USB PCI_DEVICE_ID_SERVERWORKS_OSB4USB
    #define PCI_DEVICE_ID_SERVERWORKS_CSB6USB 0x0221
    +#define PCI_DEVICE_ID_SERVERWORKS_CSB6LPC 0x0227
    #define PCI_DEVICE_ID_SERVERWORKS_GCLE 0x0225
    #define PCI_DEVICE_ID_SERVERWORKS_GCLE2 0x0227
    #define PCI_DEVICE_ID_SERVERWORKS_CSB5ISA 0x0230

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