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[PATCH] tpm: Support new National TPMs
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This patch is work to support new National TPMs that problems were reported
with on Thinkpad T43 and Thinkcentre S51.  Thanks to Jens and Gang for
their debugging work on these issues.

Signed-off-by: Kylene Hall <kjhall@us.ibm.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
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Kylene Jo Hall authored and Linus Torvalds committed Jun 25, 2005
1 parent b2b1866 commit daacdfa
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Showing 3 changed files with 53 additions and 70 deletions.
14 changes: 7 additions & 7 deletions drivers/char/tpm/tpm.h
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Original file line number Diff line number Diff line change
Expand Up @@ -31,8 +31,8 @@ enum tpm_timeout {

/* TPM addresses */
enum tpm_addr {
TPM_SUPERIO_ADDR = 0x2E,
TPM_ADDR = 0x4E,
TPM_DATA = 0x4F
};

extern ssize_t tpm_show_pubek(struct device *, struct device_attribute *attr,
Expand Down Expand Up @@ -79,16 +79,16 @@ struct tpm_chip {
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 int tpm_register_hardware(struct pci_dev *,
Expand Down
16 changes: 8 additions & 8 deletions drivers/char/tpm/tpm_atmel.c
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Original file line number Diff line number Diff line change
Expand Up @@ -163,24 +163,24 @@ static int __devinit tpm_atml_init(struct pci_dev *pci_dev,
if (pci_enable_device(pci_dev))
return -EIO;

lo = tpm_read_index( TPM_ATMEL_BASE_ADDR_LO );
hi = tpm_read_index( TPM_ATMEL_BASE_ADDR_HI );
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;
Expand Down
93 changes: 38 additions & 55 deletions drivers/char/tpm/tpm_nsc.c
View file
Original file line number Diff line number Diff line change
Expand Up @@ -23,7 +23,6 @@

/* National definitions */
enum tpm_nsc_addr{
TPM_NSC_BASE = 0x360,
TPM_NSC_IRQ = 0x07,
TPM_NSC_BASE0_HI = 0x60,
TPM_NSC_BASE0_LO = 0x61,
Expand Down Expand Up @@ -56,6 +55,7 @@ enum tpm_nsc_status {
NSC_STATUS_RDY = 0x10, /* ready to receive command */
NSC_STATUS_IBR = 0x20 /* ready to receive data */
};

/* command bits */
enum tpm_nsc_cmd_mode {
NSC_COMMAND_NORMAL = 0x01, /* normal mode */
Expand Down Expand Up @@ -150,7 +150,8 @@ static int tpm_nsc_recv(struct tpm_chip *chip, u8 * buf, size_t count)
*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;
}
Expand Down Expand Up @@ -259,85 +260,64 @@ static int __devinit tpm_nsc_init(struct pci_dev *pci_dev,
{
int rc = 0;
int lo, hi;
int nscAddrBase = TPM_ADDR;

hi = tpm_read_index(TPM_NSC_BASE0_HI);
lo = tpm_read_index(TPM_NSC_BASE0_LO);

tpm_nsc.base = (hi<<8) | lo;

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(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;
Expand All @@ -355,6 +335,9 @@ static struct pci_device_id tpm_pci_tbl[] __devinitdata = {
{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,}
};
Expand Down

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