diff options
Diffstat (limited to 'drivers/char/tpm')
| -rw-r--r-- | drivers/char/tpm/Kconfig | 2 | ||||
| -rw-r--r-- | drivers/char/tpm/tpm.c | 118 | ||||
| -rw-r--r-- | drivers/char/tpm/tpm.h | 20 | ||||
| -rw-r--r-- | drivers/char/tpm/tpm_atmel.c | 168 | ||||
| -rw-r--r-- | drivers/char/tpm/tpm_atmel.h | 131 | ||||
| -rw-r--r-- | drivers/char/tpm/tpm_infineon.c | 179 | ||||
| -rw-r--r-- | drivers/char/tpm/tpm_nsc.c | 165 |
7 files changed, 448 insertions, 335 deletions
diff --git a/drivers/char/tpm/Kconfig b/drivers/char/tpm/Kconfig index b58adfe3ed19..a6873bf89ffa 100644 --- a/drivers/char/tpm/Kconfig +++ b/drivers/char/tpm/Kconfig @@ -6,7 +6,7 @@ menu "TPM devices" config TCG_TPM tristate "TPM Hardware Support" - depends on EXPERIMENTAL && PCI + depends on EXPERIMENTAL ---help--- If you have a TPM security chip in your system, which implements the Trusted Computing Group's specification, diff --git a/drivers/char/tpm/tpm.c b/drivers/char/tpm/tpm.c index 049d128ae7f0..a9be0e8eaea5 100644 --- a/drivers/char/tpm/tpm.c +++ b/drivers/char/tpm/tpm.c @@ -43,6 +43,13 @@ static void user_reader_timeout(unsigned long ptr) { struct tpm_chip *chip = (struct tpm_chip *) ptr; + schedule_work(&chip->work); +} + +static void timeout_work(void * ptr) +{ + struct tpm_chip *chip = ptr; + down(&chip->buffer_mutex); atomic_set(&chip->data_pending, 0); memset(chip->data_buffer, 0, TPM_BUFSIZE); @@ -64,7 +71,7 @@ static ssize_t tpm_transmit(struct tpm_chip *chip, const char *buf, if (count == 0) return -ENODATA; if (count > bufsiz) { - dev_err(&chip->pci_dev->dev, + dev_err(chip->dev, "invalid count value %x %zx \n", count, bufsiz); return -E2BIG; } @@ -72,21 +79,21 @@ static ssize_t tpm_transmit(struct tpm_chip *chip, const char *buf, down(&chip->tpm_mutex); if ((rc = chip->vendor->send(chip, (u8 *) buf, count)) < 0) { - dev_err(&chip->pci_dev->dev, + dev_err(chip->dev, "tpm_transmit: tpm_send: error %zd\n", rc); goto out; } stop = jiffies + 2 * 60 * HZ; do { - u8 status = inb(chip->vendor->base + 1); + u8 status = chip->vendor->status(chip); if ((status & chip->vendor->req_complete_mask) == chip->vendor->req_complete_val) { goto out_recv; } if ((status == chip->vendor->req_canceled)) { - dev_err(&chip->pci_dev->dev, "Operation Canceled\n"); + dev_err(chip->dev, "Operation Canceled\n"); rc = -ECANCELED; goto out; } @@ -97,14 +104,14 @@ static ssize_t tpm_transmit(struct tpm_chip *chip, const char *buf, chip->vendor->cancel(chip); - dev_err(&chip->pci_dev->dev, "Operation Timed out\n"); + dev_err(chip->dev, "Operation Timed out\n"); rc = -ETIME; goto out; out_recv: rc = chip->vendor->recv(chip, (u8 *) buf, bufsiz); if (rc < 0) - dev_err(&chip->pci_dev->dev, + dev_err(chip->dev, "tpm_transmit: tpm_recv: error %zd\n", rc); out: up(&chip->tpm_mutex); @@ -139,15 +146,14 @@ ssize_t tpm_show_pcrs(struct device *dev, struct device_attribute *attr, __be32 index; char *str = buf; - struct tpm_chip *chip = - pci_get_drvdata(to_pci_dev(dev)); + struct tpm_chip *chip = dev_get_drvdata(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) { - dev_dbg(&chip->pci_dev->dev, "A TPM error (%d) occurred " + dev_dbg(chip->dev, "A TPM error (%d) occurred " "attempting to determine the number of PCRS\n", be32_to_cpu(*((__be32 *) (data + 6)))); return 0; @@ -161,9 +167,10 @@ ssize_t tpm_show_pcrs(struct device *dev, struct device_attribute *attr, memcpy(data + 10, &index, 4); if ((len = tpm_transmit(chip, data, sizeof(data))) < READ_PCR_RESULT_SIZE){ - dev_dbg(&chip->pci_dev->dev, "A TPM error (%d) occurred" + dev_dbg(chip->dev, "A TPM error (%d) occurred" " attempting to read PCR %d of %d\n", - be32_to_cpu(*((__be32 *) (data + 6))), i, num_pcrs); + be32_to_cpu(*((__be32 *) (data + 6))), + i, num_pcrs); goto out; } str += sprintf(str, "PCR-%02d: ", i); @@ -191,21 +198,19 @@ ssize_t tpm_show_pubek(struct device *dev, struct device_attribute *attr, int i, rc; char *str = buf; - struct tpm_chip *chip = - pci_get_drvdata(to_pci_dev(dev)); + struct tpm_chip *chip = dev_get_drvdata(dev); if (chip == NULL) return -ENODEV; - data = kmalloc(READ_PUBEK_RESULT_SIZE, GFP_KERNEL); + data = kzalloc(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, READ_PUBEK_RESULT_SIZE)) < READ_PUBEK_RESULT_SIZE) { - dev_dbg(&chip->pci_dev->dev, "A TPM error (%d) occurred " + dev_dbg(chip->dev, "A TPM error (%d) occurred " "attempting to read the PUBEK\n", be32_to_cpu(*((__be32 *) (data + 6)))); rc = 0; @@ -245,7 +250,6 @@ out: kfree(data); return rc; } - EXPORT_SYMBOL_GPL(tpm_show_pubek); #define CAP_VER_RESULT_SIZE 18 @@ -274,8 +278,7 @@ ssize_t tpm_show_caps(struct device *dev, struct device_attribute *attr, ssize_t len; char *str = buf; - struct tpm_chip *chip = - pci_get_drvdata(to_pci_dev(dev)); + struct tpm_chip *chip = dev_get_drvdata(dev); if (chip == NULL) return -ENODEV; @@ -315,7 +318,6 @@ ssize_t tpm_store_cancel(struct device *dev, struct device_attribute *attr, } EXPORT_SYMBOL_GPL(tpm_store_cancel); - /* * Device file system interface to the TPM */ @@ -339,21 +341,20 @@ int tpm_open(struct inode *inode, struct file *file) } if (chip->num_opens) { - dev_dbg(&chip->pci_dev->dev, - "Another process owns this TPM\n"); + dev_dbg(chip->dev, "Another process owns this TPM\n"); rc = -EBUSY; goto err_out; } chip->num_opens++; - pci_dev_get(chip->pci_dev); + get_device(chip->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); + put_device(chip->dev); return -ENOMEM; } @@ -366,7 +367,6 @@ err_out: spin_unlock(&driver_lock); return rc; } - EXPORT_SYMBOL_GPL(tpm_open); int tpm_release(struct inode *inode, struct file *file) @@ -377,16 +377,16 @@ int tpm_release(struct inode *inode, struct file *file) file->private_data = NULL; chip->num_opens--; del_singleshot_timer_sync(&chip->user_read_timer); + flush_scheduled_work(); atomic_set(&chip->data_pending, 0); - pci_dev_put(chip->pci_dev); + put_device(chip->dev); kfree(chip->data_buffer); spin_unlock(&driver_lock); return 0; } - EXPORT_SYMBOL_GPL(tpm_release); -ssize_t tpm_write(struct file * file, const char __user * buf, +ssize_t tpm_write(struct file *file, const char __user *buf, size_t size, loff_t * off) { struct tpm_chip *chip = file->private_data; @@ -422,13 +422,14 @@ ssize_t tpm_write(struct file * file, const char __user * buf, EXPORT_SYMBOL_GPL(tpm_write); -ssize_t tpm_read(struct file * file, char __user * buf, +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; del_singleshot_timer_sync(&chip->user_read_timer); + flush_scheduled_work(); ret_size = atomic_read(&chip->data_pending); atomic_set(&chip->data_pending, 0); if (ret_size > 0) { /* relay data */ @@ -436,23 +437,21 @@ ssize_t tpm_read(struct file * file, char __user * buf, ret_size = size; down(&chip->buffer_mutex); - if (copy_to_user - ((void __user *) buf, chip->data_buffer, ret_size)) + if (copy_to_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) +void tpm_remove_hardware(struct device *dev) { - struct tpm_chip *chip = pci_get_drvdata(pci_dev); + struct tpm_chip *chip = dev_get_drvdata(dev); if (chip == NULL) { - dev_err(&pci_dev->dev, "No device data found\n"); + dev_err(dev, "No device data found\n"); return; } @@ -462,22 +461,20 @@ void __devexit tpm_remove(struct pci_dev *pci_dev) spin_unlock(&driver_lock); - pci_set_drvdata(pci_dev, NULL); + dev_set_drvdata(dev, NULL); misc_deregister(&chip->vendor->miscdev); kfree(chip->vendor->miscdev.name); - sysfs_remove_group(&pci_dev->dev.kobj, chip->vendor->attr_group); - - pci_disable_device(pci_dev); + sysfs_remove_group(&dev->kobj, chip->vendor->attr_group); - dev_mask[chip->dev_num / TPM_NUM_MASK_ENTRIES ] &= !(1 << (chip->dev_num % TPM_NUM_MASK_ENTRIES)); + dev_mask[chip->dev_num / TPM_NUM_MASK_ENTRIES ] &= + ~(1 << (chip->dev_num % TPM_NUM_MASK_ENTRIES)); kfree(chip); - pci_dev_put(pci_dev); + put_device(dev); } - -EXPORT_SYMBOL_GPL(tpm_remove); +EXPORT_SYMBOL_GPL(tpm_remove_hardware); static u8 savestate[] = { 0, 193, /* TPM_TAG_RQU_COMMAND */ @@ -489,32 +486,30 @@ static u8 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) +int tpm_pm_suspend(struct device *dev, pm_message_t pm_state) { - struct tpm_chip *chip = pci_get_drvdata(pci_dev); + struct tpm_chip *chip = dev_get_drvdata(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) +int tpm_pm_resume(struct device *dev) { - struct tpm_chip *chip = pci_get_drvdata(pci_dev); + struct tpm_chip *chip = dev_get_drvdata(dev); if (chip == NULL) return -ENODEV; return 0; } - EXPORT_SYMBOL_GPL(tpm_pm_resume); /* @@ -524,8 +519,7 @@ EXPORT_SYMBOL_GPL(tpm_pm_resume); * 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) +int tpm_register_hardware(struct device *dev, struct tpm_vendor_specific *entry) { #define DEVNAME_SIZE 7 @@ -534,16 +528,16 @@ int tpm_register_hardware(struct pci_dev *pci_dev, int i, j; /* Driver specific per-device data */ - chip = kmalloc(sizeof(*chip), GFP_KERNEL); + chip = kzalloc(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_LIST_HEAD(&chip->list); + INIT_WORK(&chip->work, timeout_work, chip); + init_timer(&chip->user_read_timer); chip->user_read_timer.function = user_reader_timeout; chip->user_read_timer.data = (unsigned long) chip; @@ -563,8 +557,7 @@ int tpm_register_hardware(struct pci_dev *pci_dev, dev_num_search_complete: if (chip->dev_num < 0) { - dev_err(&pci_dev->dev, - "No available tpm device numbers\n"); + dev_err(dev, "No available tpm device numbers\n"); kfree(chip); return -ENODEV; } else if (chip->dev_num == 0) @@ -576,15 +569,15 @@ dev_num_search_complete: scnprintf(devname, DEVNAME_SIZE, "%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); + chip->vendor->miscdev.dev = dev; + chip->dev = get_device(dev); if (misc_register(&chip->vendor->miscdev)) { - dev_err(&chip->pci_dev->dev, + dev_err(chip->dev, "unable to misc_register %s, minor %d\n", chip->vendor->miscdev.name, chip->vendor->miscdev.minor); - pci_dev_put(pci_dev); + put_device(dev); kfree(chip); dev_mask[i] &= !(1 << j); return -ENODEV; @@ -592,17 +585,16 @@ dev_num_search_complete: spin_lock(&driver_lock); - pci_set_drvdata(pci_dev, chip); + dev_set_drvdata(dev, chip); list_add(&chip->list, &tpm_chip_list); spin_unlock(&driver_lock); - sysfs_create_group(&pci_dev->dev.kobj, chip->vendor->attr_group); + sysfs_create_group(&dev->kobj, chip->vendor->attr_group); return 0; } - EXPORT_SYMBOL_GPL(tpm_register_hardware); MODULE_AUTHOR("Leendert van Doorn (leendert@watson.ibm.com)"); diff --git a/drivers/char/tpm/tpm.h b/drivers/char/tpm/tpm.h index 373b41f6b460..159882ca69dd 100644 --- a/drivers/char/tpm/tpm.h +++ b/drivers/char/tpm/tpm.h @@ -19,11 +19,11 @@ * */ #include <linux/module.h> -#include <linux/version.h> #include <linux/pci.h> #include <linux/delay.h> #include <linux/fs.h> #include <linux/miscdevice.h> +#include <linux/platform_device.h> enum tpm_timeout { TPM_TIMEOUT = 5, /* msecs */ @@ -50,17 +50,22 @@ struct tpm_vendor_specific { u8 req_complete_mask; u8 req_complete_val; u8 req_canceled; - u16 base; /* TPM base address */ + void __iomem *iobase; /* ioremapped address */ + unsigned long base; /* TPM base address */ + + int region_size; + int have_region; int (*recv) (struct tpm_chip *, u8 *, size_t); int (*send) (struct tpm_chip *, u8 *, size_t); void (*cancel) (struct tpm_chip *); + u8 (*status) (struct tpm_chip *); struct miscdevice miscdev; struct attribute_group *attr_group; }; struct tpm_chip { - struct pci_dev *pci_dev; /* PCI device stuff */ + struct device *dev; /* Device stuff */ int dev_num; /* /dev/tpm# */ int num_opens; /* only one allowed */ @@ -72,6 +77,7 @@ struct tpm_chip { struct semaphore buffer_mutex; struct timer_list user_read_timer; /* user needs to claim result */ + struct work_struct work; struct semaphore tpm_mutex; /* tpm is processing */ struct tpm_vendor_specific *vendor; @@ -91,13 +97,13 @@ static inline void tpm_write_index(int base, int index, int value) outb(value & 0xFF, base+1); } -extern int tpm_register_hardware(struct pci_dev *, +extern int tpm_register_hardware(struct device *, struct tpm_vendor_specific *); extern int tpm_open(struct inode *, struct file *); extern int tpm_release(struct inode *, struct file *); extern ssize_t tpm_write(struct file *, const char __user *, size_t, loff_t *); extern ssize_t tpm_read(struct file *, char __user *, size_t, loff_t *); -extern void __devexit tpm_remove(struct pci_dev *); -extern int tpm_pm_suspend(struct pci_dev *, pm_message_t); -extern int tpm_pm_resume(struct pci_dev *); +extern void tpm_remove_hardware(struct device *); +extern int tpm_pm_suspend(struct device *, pm_message_t); +extern int tpm_pm_resume(struct device *); diff --git a/drivers/char/tpm/tpm_atmel.c b/drivers/char/tpm/tpm_atmel.c index c0d64914595f..ff3654964fe3 100644 --- a/drivers/char/tpm/tpm_atmel.c +++ b/drivers/char/tpm/tpm_atmel.c @@ -20,12 +20,7 @@ */ #include "tpm.h" - -/* Atmel definitions */ -enum tpm_atmel_addr { - TPM_ATMEL_BASE_ADDR_LO = 0x08, - TPM_ATMEL_BASE_ADDR_HI = 0x09 -}; +#include "tpm_atmel.h" /* write status bits */ enum tpm_atmel_write_status { @@ -40,7 +35,7 @@ enum tpm_atmel_read_status { ATML_STATUS_READY = 0x08 }; -static int tpm_atml_recv(struct tpm_chip *chip, u8 * buf, size_t count) +static int tpm_atml_recv(struct tpm_chip *chip, u8 *buf, size_t count) { u8 status, *hdr = buf; u32 size; @@ -52,13 +47,12 @@ static int tpm_atml_recv(struct tpm_chip *chip, u8 * buf, size_t count) return -EIO; for (i = 0; i < 6; i++) { - status = inb(chip->vendor->base + 1); + status = ioread8(chip->vendor->iobase + 1); if ((status & ATML_STATUS_DATA_AVAIL) == 0) { - dev_err(&chip->pci_dev->dev, - "error reading header\n"); + dev_err(chip->dev, "error reading header\n"); return -EIO; } - *buf++ = inb(chip->vendor->base); + *buf++ = ioread8(chip->vendor->iobase); } /* size of the data received */ @@ -66,13 +60,12 @@ static int tpm_atml_recv(struct tpm_chip *chip, u8 * buf, size_t count) size = be32_to_cpu(*native_size); if (count < size) { - dev_err(&chip->pci_dev->dev, + dev_err(chip->dev, "Recv size(%d) less than available space\n", size); for (; i < size; i++) { /* clear the waiting data anyway */ - status = inb(chip->vendor->base + 1); + status = ioread8(chip->vendor->iobase + 1); if ((status & ATML_STATUS_DATA_AVAIL) == 0) { - dev_err(&chip->pci_dev->dev, - "error reading data\n"); + dev_err(chip->dev, "error reading data\n"); return -EIO; } } @@ -81,33 +74,33 @@ static int tpm_atml_recv(struct tpm_chip *chip, u8 * buf, size_t count) /* read all the data available */ for (; i < size; i++) { - status = inb(chip->vendor->base + 1); + status = ioread8(chip->vendor->iobase + 1); if ((status & ATML_STATUS_DATA_AVAIL) == 0) { - dev_err(&chip->pci_dev->dev, - "error reading data\n"); + dev_err(chip->dev, "error reading data\n"); return -EIO; } - *buf++ = inb(chip->vendor->base); + *buf++ = ioread8(chip->vendor->iobase); } /* make sure data available is gone */ - status = inb(chip->vendor->base + 1); + status = ioread8(chip->vendor->iobase + 1); + if (status & ATML_STATUS_DATA_AVAIL) { - dev_err(&chip->pci_dev->dev, "data available is stuck\n"); + dev_err(chip->dev, "data available is stuck\n"); return -EIO; } return size; } -static int tpm_atml_send(struct tpm_chip *chip, u8 * buf, size_t count) +static int tpm_atml_send(struct tpm_chip *chip, u8 *buf, size_t count) { int i; - dev_dbg(&chip->pci_dev->dev, "tpm_atml_send: "); + dev_dbg(chip->dev, "tpm_atml_send:\n"); for (i = 0; i < count; i++) { - dev_dbg(&chip->pci_dev->dev, "0x%x(%d) ", buf[i], buf[i]); - outb(buf[i], chip->vendor->base); + dev_dbg(chip->dev, "%d 0x%x(%d)\n", i, buf[i], buf[i]); + iowrite8(buf[i], chip->vendor->iobase); } return count; @@ -115,7 +108,12 @@ static int tpm_atml_send(struct tpm_chip *chip, u8 * buf, size_t count) static void tpm_atml_cancel(struct tpm_chip *chip) { - outb(ATML_STATUS_ABORT, chip->vendor->base + 1); + iowrite8(ATML_STATUS_ABORT, chip->vendor->iobase + 1); +} + +static u8 tpm_atml_status(struct tpm_chip *chip) +{ + return ioread8(chip->vendor->iobase + 1); } static struct file_operations atmel_ops = { @@ -137,7 +135,7 @@ static struct attribute* atmel_attrs[] = { &dev_attr_pcrs.attr, &dev_attr_caps.attr, &dev_attr_cancel.attr, - 0, + NULL, }; static struct attribute_group atmel_attr_grp = { .attrs = atmel_attrs }; @@ -146,6 +144,7 @@ static struct tpm_vendor_specific tpm_atmel = { .recv = tpm_atml_recv, .send = tpm_atml_send, .cancel = tpm_atml_cancel, + .status = tpm_atml_status, .req_complete_mask = ATML_STATUS_BUSY | ATML_STATUS_DATA_AVAIL, .req_complete_val = ATML_STATUS_DATA_AVAIL, .req_canceled = ATML_STATUS_READY, @@ -153,86 +152,73 @@ static struct tpm_vendor_specific tpm_atmel = { .miscdev = { .fops = &atmel_ops, }, }; -static int __devinit tpm_atml_init(struct pci_dev *pci_dev, - const struct pci_device_id *pci_id) -{ - u8 version[4]; - int rc = 0; - int lo, hi; +static struct platform_device *pdev; - if (pci_enable_device(pci_dev)) - return -EIO; +static void atml_plat_remove(void) +{ + struct tpm_chip *chip = dev_get_drvdata(&pdev->dev); + + if (chip) { + if (chip->vendor->have_region) + atmel_release_region(chip->vendor->base, + chip->vendor->region_size); + atmel_put_base_addr(chip->vendor); + tpm_remove_hardware(chip->dev); + platform_device_unregister(pdev); + } +} - lo = tpm_read_index(TPM_ADDR, TPM_ATMEL_BASE_ADDR_LO); - hi = tpm_read_index(TPM_ADDR, TPM_ATMEL_BASE_ADDR_HI); +static struct device_driver atml_drv = { + .name = "tpm_atmel", + .bus = &platform_bus_type, + .owner = THIS_MODULE, + .suspend = tpm_pm_suspend, + .resume = tpm_pm_resume, +}; - tpm_atmel.base = (hi<<8)|lo; - dev_dbg( &pci_dev->dev, "Operating with base: 0x%x\n", tpm_atmel.base); +static int __init init_atmel(void) +{ + int rc = 0; - /* verify that it is an Atmel part */ - 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; - } + driver_register(&atml_drv); - /* query chip for its version number */ - 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"); + if ((tpm_atmel.iobase = atmel_get_base_addr(&tpm_atmel)) == NULL) { rc = -ENODEV; - goto out_err; + goto err_unreg_drv; } - if ((rc = tpm_register_hardware(pci_dev, &tpm_atmel)) < 0) - goto out_err; + tpm_atmel.have_region = + (atmel_request_region + (tpm_atmel.base, tpm_atmel.region_size, + "tpm_atmel0") == NULL) ? 0 : 1; - dev_info(&pci_dev->dev, - "Atmel TPM version %d.%d.%d.%d\n", version[0], version[1], - version[2], version[3]); + if (IS_ERR + (pdev = + platform_device_register_simple("tpm_atmel", -1, NULL, 0))) { + rc = PTR_ERR(pdev); + goto err_rel_reg; + } + if ((rc = tpm_register_hardware(&pdev->dev, &tpm_atmel)) < 0) + goto err_unreg_dev; return 0; -out_err: - pci_disable_device(pci_dev); - return rc; -} - -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_ICH7_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,} -}; -MODULE_DEVICE_TABLE(pci, tpm_pci_tbl); - -static struct pci_driver atmel_pci_driver = { - .name = "tpm_atmel", - .id_table = tpm_pci_tbl, - .probe = tpm_atml_init, - .remove = __devexit_p(tpm_remove), - .suspend = tpm_pm_suspend, - .resume = tpm_pm_resume, -}; - -static int __init init_atmel(void) -{ - return pci_register_driver(&atmel_pci_driver); +err_unreg_dev: + platform_device_unregister(pdev); +err_rel_reg: + atmel_put_base_addr(&tpm_atmel); + if (tpm_atmel.have_region) + atmel_release_region(tpm_atmel.base, + tpm_atmel.region_size); +err_unreg_drv: + driver_unregister(&atml_drv); + return rc; } static void __exit cleanup_atmel(void) { - pci_unregister_driver(&atmel_pci_driver); + driver_unregister(&atml_drv); + atml_plat_remove(); } module_init(init_atmel); diff --git a/drivers/char/tpm/tpm_atmel.h b/drivers/char/tpm/tpm_atmel.h new file mode 100644 index 000000000000..d3478aaadd77 --- /dev/null +++ b/drivers/char/tpm/tpm_atmel.h @@ -0,0 +1,131 @@ +/* + * Copyright (C) 2005 IBM Corporation + * + * Authors: + * 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. + * + * These difference are required on power because the device must be + * discovered through the device tree and iomap must be used to get + * around the need for holes in the io_page_mask. This does not happen + * automatically because the tpm is not a normal pci device and lives + * under the root node. + * + */ + +#ifdef CONFIG_PPC64 +#define atmel_getb(chip, offset) readb(chip->vendor->iobase + offset); +#define atmel_putb(val, chip, offset) writeb(val, chip->vendor->iobase + offset) +#define atmel_request_region request_mem_region +#define atmel_release_region release_mem_region + +static inline void atmel_put_base_addr(struct tpm_vendor_specific + *vendor) +{ + iounmap(vendor->iobase); +} + +static void __iomem * atmel_get_base_addr(struct tpm_vendor_specific *vendor) +{ + struct device_node *dn; + unsigned long address, size; + unsigned int *reg; + int reglen; + int naddrc; + int nsizec; + + dn = of_find_node_by_name(NULL, "tpm"); + + if (!dn) + return NULL; + + if (!device_is_compatible(dn, "AT97SC3201")) { + of_node_put(dn); + return NULL; + } + + reg = (unsigned int *) get_property(dn, "reg", ®len); + naddrc = prom_n_addr_cells(dn); + nsizec = prom_n_size_cells(dn); + + of_node_put(dn); + + + if (naddrc == 2) + address = ((unsigned long) reg[0] << 32) | reg[1]; + else + address = reg[0]; + + if (nsizec == 2) + size = + ((unsigned long) reg[naddrc] << 32) | reg[naddrc + 1]; + else + size = reg[naddrc]; + + vendor->base = address; + vendor->region_size = size; + return ioremap(vendor->base, vendor->region_size); +} +#else +#define atmel_getb(chip, offset) inb(chip->vendor->base + offset) +#define atmel_putb(val, chip, offset) outb(val, chip->vendor->base + offset) +#define atmel_request_region request_region +#define atmel_release_region release_region +/* Atmel definitions */ +enum tpm_atmel_addr { + TPM_ATMEL_BASE_ADDR_LO = 0x08, + TPM_ATMEL_BASE_ADDR_HI = 0x09 +}; + +/* Verify this is a 1.1 Atmel TPM */ +static int atmel_verify_tpm11(void) +{ + + /* verify that it is an Atmel part */ + 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') + return 1; + + /* query chip for its version number */ + if (tpm_read_index(TPM_ADDR, 0x00) != 1 || + tpm_read_index(TPM_ADDR, 0x01) != 1) + return 1; + + /* This is an atmel supported part */ + return 0; +} + +static inline void atmel_put_base_addr(struct tpm_vendor_specific + *vendor) +{ +} + +/* Determine where to talk to device */ +static void __iomem * atmel_get_base_addr(struct tpm_vendor_specific + *vendor) +{ + int lo, hi; + + if (atmel_verify_tpm11() != 0) + return NULL; + + lo = tpm_read_index(TPM_ADDR, TPM_ATMEL_BASE_ADDR_LO); + hi = tpm_read_index(TPM_ADDR, TPM_ATMEL_BASE_ADDR_HI); + + vendor->base = (hi << 8) | lo; + vendor->region_size = 2; + + return ioport_map(vendor->base, vendor->region_size); +} +#endif diff --git a/drivers/char/tpm/tpm_infineon.c b/drivers/char/tpm/tpm_infineon.c index 939e51e119e6..8198dbb7370f 100644 --- a/drivers/char/tpm/tpm_infineon.c +++ b/drivers/char/tpm/tpm_infineon.c @@ -5,6 +5,7 @@ * Specifications at www.trustedcomputinggroup.org * * Copyright (C) 2005, Marcel Selhorst <selhorst@crypto.rub.de> + * Sirrix AG - security technologies, http://www.sirrix.com and * Applied Data Security Group, Ruhr-University Bochum, Germany * Project-Homepage: http://www.prosec.rub.de/tpm * @@ -29,9 +30,10 @@ #define TPM_INFINEON_DEV_VEN_VALUE 0x15D1 /* These values will be filled after PnP-call */ -static int TPM_INF_DATA = 0; -static int TPM_INF_ADDR = 0; -static int pnp_registered = 0; +static int TPM_INF_DATA; +static int TPM_INF_ADDR; +static int TPM_INF_BASE; +static int TPM_INF_PORT_LEN; /* TPM header definitions */ enum infineon_tpm_header { @@ -143,11 +145,9 @@ static int wait(struct tpm_chip *chip, int wait_for_bit) } if (i == TPM_MAX_TRIES) { /* timeout occurs */ if (wait_for_bit == STAT_XFE) - dev_err(&chip->pci_dev->dev, - "Timeout in wait(STAT_XFE)\n"); + dev_err(chip->dev, "Timeout in wait(STAT_XFE)\n"); if (wait_for_bit == STAT_RDA) - dev_err(&chip->pci_dev->dev, - "Timeout in wait(STAT_RDA)\n"); + dev_err(chip->dev, "Timeout in wait(STAT_RDA)\n"); return -EIO; } return 0; @@ -170,7 +170,7 @@ static void wait_and_send(struct tpm_chip *chip, u8 sendbyte) static void tpm_wtx(struct tpm_chip *chip) { number_of_wtx++; - dev_info(&chip->pci_dev->dev, "Granting WTX (%02d / %02d)\n", + dev_info(chip->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); @@ -181,7 +181,7 @@ static void tpm_wtx(struct tpm_chip *chip) static void tpm_wtx_abort(struct tpm_chip *chip) { - dev_info(&chip->pci_dev->dev, "Aborting WTX\n"); + dev_info(chip->dev, "Aborting WTX\n"); wait_and_send(chip, TPM_VL_VER); wait_and_send(chip, TPM_CTRL_WTX_ABORT); wait_and_send(chip, 0x00); @@ -206,7 +206,7 @@ recv_begin: } if (buf[0] != TPM_VL_VER) { - dev_err(&chip->pci_dev->dev, + dev_err(chip->dev, "Wrong transport protocol implementation!\n"); return -EIO; } @@ -221,8 +221,7 @@ recv_begin: } if ((size == 0x6D00) && (buf[1] == 0x80)) { - dev_err(&chip->pci_dev->dev, - "Error handling on vendor layer!\n"); + dev_err(chip->dev, "Error handling on vendor layer!\n"); return -EIO; } @@ -234,7 +233,7 @@ recv_begin: } if (buf[1] == TPM_CTRL_WTX) { - dev_info(&chip->pci_dev->dev, "WTX-package received\n"); + dev_info(chip->dev, "WTX-package received\n"); if (number_of_wtx < TPM_MAX_WTX_PACKAGES) { tpm_wtx(chip); goto recv_begin; @@ -245,14 +244,14 @@ recv_begin: } if (buf[1] == TPM_CTRL_WTX_ABORT_ACK) { - dev_info(&chip->pci_dev->dev, "WTX-abort acknowledged\n"); + dev_info(chip->dev, "WTX-abort acknowledged\n"); return size; } if (buf[1] == TPM_CTRL_ERROR) { - dev_err(&chip->pci_dev->dev, "ERROR-package received:\n"); + dev_err(chip->dev, "ERROR-package received:\n"); if (buf[4] == TPM_INF_NAK) - dev_err(&chip->pci_dev->dev, + dev_err(chip->dev, "-> Negative acknowledgement" " - retransmit command!\n"); return -EIO; @@ -271,7 +270,7 @@ static int tpm_inf_send(struct tpm_chip *chip, u8 * buf, size_t count) ret = empty_fifo(chip, 1); if (ret) { - dev_err(&chip->pci_dev->dev, "Timeout while clearing FIFO\n"); + dev_err(chip->dev, "Timeout while clearing FIFO\n"); return -EIO; } @@ -316,6 +315,11 @@ static void tpm_inf_cancel(struct tpm_chip *chip) */ } +static u8 tpm_inf_status(struct tpm_chip *chip) +{ + return inb(chip->vendor->base + STAT); +} + 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); @@ -344,6 +348,7 @@ static struct tpm_vendor_specific tpm_inf = { .recv = tpm_inf_recv, .send = tpm_inf_send, .cancel = tpm_inf_cancel, + .status = tpm_inf_status, .req_complete_mask = 0, .req_complete_val = 0, .attr_group = &inf_attr_grp, @@ -356,30 +361,11 @@ static const struct pnp_device_id tpm_pnp_tbl[] = { {"IFX0102", 0}, {"", 0} }; + MODULE_DEVICE_TABLE(pnp, tpm_pnp_tbl); static int __devinit tpm_inf_pnp_probe(struct pnp_dev *dev, - const struct pnp_device_id *dev_id) -{ - if (pnp_port_valid(dev, 0)) { - TPM_INF_ADDR = (pnp_port_start(dev, 0) & 0xff); - TPM_INF_DATA = ((TPM_INF_ADDR + 1) & 0xff); - tpm_inf.base = pnp_port_start(dev, 1); - dev_info(&dev->dev, "Found %s with ID %s\n", - dev->name, dev_id->id); - return 0; - } - return -ENODEV; -} - -static struct pnp_driver tpm_inf_pnp = { - .name = "tpm_inf_pnp", - .id_table = tpm_pnp_tbl, - .probe = tpm_inf_pnp_probe, -}; - -static int __devinit tpm_inf_probe(struct pci_dev *pci_dev, - const struct pci_device_id *pci_id) + const struct pnp_device_id *dev_id) { int rc = 0; u8 iol, ioh; @@ -388,30 +374,28 @@ static int __devinit tpm_inf_probe(struct pci_dev *pci_dev, int productid[2]; char chipname[20]; - rc = pci_enable_device(pci_dev); - if (rc) - return rc; - - dev_info(&pci_dev->dev, "LPC-bus found at 0x%x\n", pci_id->device); - - /* read IO-ports from PnP */ - rc = pnp_register_driver(&tpm_inf_pnp); - if (rc < 0) { - dev_err(&pci_dev->dev, - "Error %x from pnp_register_driver!\n",rc); - goto error2; - } - if (!rc) { - dev_info(&pci_dev->dev, "No Infineon TPM found!\n"); - goto error; + /* read IO-ports through PnP */ + if (pnp_port_valid(dev, 0) && pnp_port_valid(dev, 1) && + !(pnp_port_flags(dev, 0) & IORESOURCE_DISABLED)) { + TPM_INF_ADDR = pnp_port_start(dev, 0); + TPM_INF_DATA = (TPM_INF_ADDR + 1); + TPM_INF_BASE = pnp_port_start(dev, 1); + TPM_INF_PORT_LEN = pnp_port_len(dev, 1); + if (!TPM_INF_PORT_LEN) + return -EINVAL; + dev_info(&dev->dev, "Found %s with ID %s\n", + dev->name, dev_id->id); + if (!((TPM_INF_BASE >> 8) & 0xff)) + return -EINVAL; + /* publish my base address and request region */ + tpm_inf.base = TPM_INF_BASE; + if (request_region + (tpm_inf.base, TPM_INF_PORT_LEN, "tpm_infineon0") == NULL) { + release_region(tpm_inf.base, TPM_INF_PORT_LEN); + return -EINVAL; + } } else { - pnp_registered = 1; - } - - /* Make sure, we have received valid config ports */ - if (!TPM_INF_ADDR) { - dev_err(&pci_dev->dev, "No valid IO-ports received!\n"); - goto error; + return -EINVAL; } /* query chip for its vendor, its version number a.s.o. */ @@ -443,10 +427,6 @@ static int __devinit tpm_inf_probe(struct pci_dev *pci_dev, if ((vendorid[0] << 8 | vendorid[1]) == (TPM_INFINEON_DEV_VEN_VALUE)) { - if (tpm_inf.base == 0) { - dev_err(&pci_dev->dev, "No IO-ports found!\n"); - goto error; - } /* configure TPM with IO-ports */ outb(IOLIMH, TPM_INF_ADDR); outb(((tpm_inf.base >> 8) & 0xff), TPM_INF_DATA); @@ -460,10 +440,11 @@ static int __devinit tpm_inf_probe(struct pci_dev *pci_dev, iol = inb(TPM_INF_DATA); if ((ioh << 8 | iol) != tpm_inf.base) { - dev_err(&pci_dev->dev, + dev_err(&dev->dev, "Could not set IO-ports to %04x\n", tpm_inf.base); - goto error; + release_region(tpm_inf.base, TPM_INF_PORT_LEN); + return -EIO; } /* activate register */ @@ -475,7 +456,7 @@ static int __devinit tpm_inf_probe(struct pci_dev *pci_dev, outb(RESET_LP_IRQC_DISABLE, tpm_inf.base + CMD); /* Finally, we're done, print some infos */ - dev_info(&pci_dev->dev, "TPM found: " + dev_info(&dev->dev, "TPM found: " "config base 0x%x, " "io base 0x%x, " "chip version %02x%02x, " @@ -483,59 +464,53 @@ static int __devinit tpm_inf_probe(struct pci_dev *pci_dev, "product id %02x%02x" "%s\n", TPM_INF_ADDR, - tpm_inf.base, + TPM_INF_BASE, version[0], version[1], vendorid[0], vendorid[1], productid[0], productid[1], chipname); - rc = tpm_register_hardware(pci_dev, &tpm_inf); - if (rc < 0) - goto error; + rc = tpm_register_hardware(&dev->dev, &tpm_inf); + if (rc < 0) { + release_region(tpm_inf.base, TPM_INF_PORT_LEN); + return -ENODEV; + } return 0; } else { - dev_info(&pci_dev->dev, "No Infineon TPM found!\n"); -error: - pnp_unregister_driver(&tpm_inf_pnp); -error2: - pci_disable_device(pci_dev); - pnp_registered = 0; + dev_info(&dev->dev, "No Infineon TPM found!\n"); 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,} -}; +static __devexit void tpm_inf_pnp_remove(struct pnp_dev *dev) +{ + struct tpm_chip *chip = pnp_get_drvdata(dev); -MODULE_DEVICE_TABLE(pci, tpm_pci_tbl); + if (chip) { + release_region(chip->vendor->base, TPM_INF_PORT_LEN); + tpm_remove_hardware(chip->dev); + } +} -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 struct pnp_driver tpm_inf_pnp = { + .name = "tpm_inf_pnp", + .driver = { + .owner = THIS_MODULE, + .suspend = tpm_pm_suspend, + .resume = tpm_pm_resume, + }, + .id_table = tpm_pnp_tbl, + .probe = tpm_inf_pnp_probe, + .remove = tpm_inf_pnp_remove, }; static int __init init_inf(void) { - return pci_register_driver(&inf_pci_driver); + return pnp_register_driver(&tpm_inf_pnp); } static void __exit cleanup_inf(void) { - if (pnp_registered) - pnp_unregister_driver(&tpm_inf_pnp); - pci_unregister_driver(&inf_pci_driver); + pnp_unregister_driver(&tpm_inf_pnp); } module_init(init_inf); @@ -543,5 +518,5 @@ module_exit(cleanup_inf); MODULE_AUTHOR("Marcel Selhorst <selhorst@crypto.rub.de>"); MODULE_DESCRIPTION("Driver for Infineon TPM SLD 9630 TT 1.1 / SLB 9635 TT 1.2"); -MODULE_VERSION("1.5"); +MODULE_VERSION("1.6"); MODULE_LICENSE("GPL"); diff --git a/drivers/char/tpm/tpm_nsc.c b/drivers/char/tpm/tpm_nsc.c index b4127348c063..680a8e331887 100644 --- a/drivers/char/tpm/tpm_nsc.c +++ b/drivers/char/tpm/tpm_nsc.c @@ -19,6 +19,7 @@ * */ +#include <linux/platform_device.h> #include "tpm.h" /* National definitions */ @@ -111,7 +112,7 @@ static int nsc_wait_for_ready(struct tpm_chip *chip) } while (time_before(jiffies, stop)); - dev_info(&chip->pci_dev->dev, "wait for ready failed\n"); + dev_info(chip->dev, "wait for ready failed\n"); return -EBUSY; } @@ -127,12 +128,12 @@ static int tpm_nsc_recv(struct tpm_chip *chip, u8 * buf, size_t count) return -EIO; if (wait_for_stat(chip, NSC_STATUS_F0, NSC_STATUS_F0, &data) < 0) { - dev_err(&chip->pci_dev->dev, "F0 timeout\n"); + dev_err(chip->dev, "F0 timeout\n"); return -EIO; } if ((data = inb(chip->vendor->base + NSC_DATA)) != NSC_COMMAND_NORMAL) { - dev_err(&chip->pci_dev->dev, "not in normal mode (0x%x)\n", + dev_err(chip->dev, "not in normal mode (0x%x)\n", data); return -EIO; } @@ -141,7 +142,7 @@ static int tpm_nsc_recv(struct tpm_chip *chip, u8 * buf, size_t count) for (p = buffer; p < &buffer[count]; p++) { if (wait_for_stat (chip, NSC_STATUS_OBF, NSC_STATUS_OBF, &data) < 0) { - dev_err(&chip->pci_dev->dev, + dev_err(chip->dev, "OBF timeout (while reading data)\n"); return -EIO; } @@ -152,11 +153,11 @@ static int tpm_nsc_recv(struct tpm_chip *chip, u8 * buf, size_t count) 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"); + dev_err(chip->dev, "F0 not set\n"); return -EIO; } if ((data = inb(chip->vendor->base + NSC_DATA)) != NSC_COMMAND_EOC) { - dev_err(&chip->pci_dev->dev, + dev_err(chip->dev, "expected end of command(0x%x)\n", data); return -EIO; } @@ -187,19 +188,19 @@ static int tpm_nsc_send(struct tpm_chip *chip, u8 * buf, size_t count) return -EIO; if (wait_for_stat(chip, NSC_STATUS_IBF, 0, &data) < 0) { - dev_err(&chip->pci_dev->dev, "IBF timeout\n"); + dev_err(chip->dev, "IBF timeout\n"); return -EIO; } outb(NSC_COMMAND_NORMAL, chip->vendor->base + NSC_COMMAND); if (wait_for_stat(chip, NSC_STATUS_IBR, NSC_STATUS_IBR, &data) < 0) { - dev_err(&chip->pci_dev->dev, "IBR timeout\n"); + dev_err(chip->dev, "IBR timeout\n"); return -EIO; } for (i = 0; i < count; i++) { if (wait_for_stat(chip, NSC_STATUS_IBF, 0, &data) < 0) { - dev_err(&chip->pci_dev->dev, + dev_err(chip->dev, "IBF timeout (while writing data)\n"); return -EIO; } @@ -207,7 +208,7 @@ static int tpm_nsc_send(struct tpm_chip *chip, u8 * buf, size_t count) } if (wait_for_stat(chip, NSC_STATUS_IBF, 0, &data) < 0) { - dev_err(&chip->pci_dev->dev, "IBF timeout\n"); + dev_err(chip->dev, "IBF timeout\n"); return -EIO; } outb(NSC_COMMAND_EOC, chip->vendor->base + NSC_COMMAND); @@ -220,6 +221,11 @@ static void tpm_nsc_cancel(struct tpm_chip *chip) outb(NSC_COMMAND_CANCEL, chip->vendor->base + NSC_COMMAND); } +static u8 tpm_nsc_status(struct tpm_chip *chip) +{ + return inb(chip->vendor->base + NSC_STATUS); +} + static struct file_operations nsc_ops = { .owner = THIS_MODULE, .llseek = no_llseek, @@ -239,7 +245,7 @@ static struct attribute * nsc_attrs[] = { &dev_attr_pcrs.attr, &dev_attr_caps.attr, &dev_attr_cancel.attr, - 0, + NULL, }; static struct attribute_group nsc_attr_grp = { .attrs = nsc_attrs }; @@ -248,6 +254,7 @@ static struct tpm_vendor_specific tpm_nsc = { .recv = tpm_nsc_recv, .send = tpm_nsc_send, .cancel = tpm_nsc_cancel, + .status = tpm_nsc_status, .req_complete_mask = NSC_STATUS_OBF, .req_complete_val = NSC_STATUS_OBF, .req_canceled = NSC_STATUS_RDY, @@ -255,55 +262,93 @@ static struct tpm_vendor_specific tpm_nsc = { .miscdev = { .fops = &nsc_ops, }, }; -static int __devinit tpm_nsc_init(struct pci_dev *pci_dev, - const struct pci_device_id *pci_id) +static struct platform_device *pdev = NULL; + +static void __devexit tpm_nsc_remove(struct device *dev) +{ + struct tpm_chip *chip = dev_get_drvdata(dev); + if ( chip ) { + release_region(chip->vendor->base, 2); + tpm_remove_hardware(chip->dev); + } +} + +static struct device_driver nsc_drv = { + .name = "tpm_nsc", + .bus = &platform_bus_type, + .owner = THIS_MODULE, + .suspend = tpm_pm_suspend, + .resume = tpm_pm_resume, +}; + +static int __init init_nsc(void) { int rc = 0; int lo, hi; int nscAddrBase = TPM_ADDR; - if (pci_enable_device(pci_dev)) - return -EIO; - - /* select PM channel 1 */ - tpm_write_index(nscAddrBase,NSC_LDN_INDEX, 0x12); - /* verify that it is a National part (SID) */ 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; - } + if (tpm_read_index(nscAddrBase, NSC_SID_INDEX) != 0xF6) + return -ENODEV; } + driver_register(&nsc_drv); + 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, + /* enable the DPM module */ + tpm_write_index(nscAddrBase, NSC_LDC_INDEX, 0x01); + + pdev = kzalloc(sizeof(struct platform_device), GFP_KERNEL); + if (!pdev) { + rc = -ENOMEM; + goto err_unreg_drv; + } + + pdev->name = "tpm_nscl0"; + pdev->id = -1; + pdev->num_resources = 0; + pdev->dev.release = tpm_nsc_remove; + pdev->dev.driver = &nsc_drv; + + if ((rc = platform_device_register(pdev)) < 0) + goto err_free_dev; + + if (request_region(tpm_nsc.base, 2, "tpm_nsc0") == NULL ) { + rc = -EBUSY; + goto err_unreg_dev; + } + + if ((rc = tpm_register_hardware(&pdev->dev, &tpm_nsc)) < 0) + goto err_rel_reg; + + dev_dbg(&pdev->dev, "NSC TPM detected\n"); + dev_dbg(&pdev->dev, "NSC LDN 0x%x, SID 0x%x, SRID 0x%x\n", tpm_read_index(nscAddrBase,0x07), tpm_read_index(nscAddrBase,0x20), tpm_read_index(nscAddrBase,0x27)); - dev_dbg(&pci_dev->dev, + dev_dbg(&pdev->dev, "NSC SIOCF1 0x%x SIOCF5 0x%x SIOCF6 0x%x SIOCF8 0x%x\n", 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", + dev_dbg(&pdev->dev, "NSC IO Base0 0x%x\n", (tpm_read_index(nscAddrBase,0x60) << 8) | tpm_read_index(nscAddrBase,0x61)); - dev_dbg(&pci_dev->dev, "NSC IO Base1 0x%x\n", + dev_dbg(&pdev->dev, "NSC IO Base1 0x%x\n", (tpm_read_index(nscAddrBase,0x62) << 8) | tpm_read_index(nscAddrBase,0x63)); - dev_dbg(&pci_dev->dev, "NSC Interrupt number and wakeup 0x%x\n", + dev_dbg(&pdev->dev, "NSC Interrupt number and wakeup 0x%x\n", tpm_read_index(nscAddrBase,0x70)); - dev_dbg(&pci_dev->dev, "NSC IRQ type select 0x%x\n", + dev_dbg(&pdev->dev, "NSC IRQ type select 0x%x\n", tpm_read_index(nscAddrBase,0x71)); - dev_dbg(&pci_dev->dev, + dev_dbg(&pdev->dev, "NSC DMA channel select0 0x%x, select1 0x%x\n", tpm_read_index(nscAddrBase,0x74), tpm_read_index(nscAddrBase,0x75)); - dev_dbg(&pci_dev->dev, + dev_dbg(&pdev->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(nscAddrBase,0xF0), tpm_read_index(nscAddrBase,0xF1), @@ -312,55 +357,33 @@ static int __devinit tpm_nsc_init(struct pci_dev *pci_dev, 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, + dev_info(&pdev->dev, "NSC TPM revision %d\n", tpm_read_index(nscAddrBase, 0x27) & 0x1F); - /* enable the DPM module */ - tpm_write_index(nscAddrBase, NSC_LDC_INDEX, 0x01); - - if ((rc = tpm_register_hardware(pci_dev, &tpm_nsc)) < 0) - goto out_err; - return 0; -out_err: - pci_disable_device(pci_dev); +err_rel_reg: + release_region(tpm_nsc.base, 2); +err_unreg_dev: + platform_device_unregister(pdev); +err_free_dev: + kfree(pdev); +err_unreg_drv: + driver_unregister(&nsc_drv); return rc; } -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_ICH7_0)}, - {PCI_DEVICE(PCI_VENDOR_ID_AMD, PCI_DEVICE_ID_AMD_8111_LPC)}, - {0,} -}; - -MODULE_DEVICE_TABLE(pci, tpm_pci_tbl); - -static struct pci_driver nsc_pci_driver = { - .name = "tpm_nsc", - .id_table = tpm_pci_tbl, - .probe = tpm_nsc_init, - .remove = __devexit_p(tpm_remove), - .suspend = tpm_pm_suspend, - .resume = tpm_pm_resume, -}; - -static int __init init_nsc(void) -{ - return pci_register_driver(&nsc_pci_driver); -} - static void __exit cleanup_nsc(void) { - pci_unregister_driver(&nsc_pci_driver); + if (pdev) { + tpm_nsc_remove(&pdev->dev); + platform_device_unregister(pdev); + kfree(pdev); + pdev = NULL; + } + + driver_unregister(&nsc_drv); } module_init(init_nsc); |