tpm: Support new National TPMs

diff -uprN --exclude='*.ko' --exclude='*.o' --exclude='*.mod*' --exclude='.*' --exclude='*~' --exclude='*.orig' linux-2.6.12-rc6/drivers/char/tpm/tpm_atmel.c linux-2.6.12-rc5-mm2/drivers/char/tpm/tpm_atmel.c
@@ -163,24 +161,24 @@ static int __devinit tpm_atml_init(struc
 	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;

diff -uprN --exclude='*.ko' --exclude='*.o' --exclude='*.mod*' --exclude='.*' --exclude='*~' --exclude='*.orig' linux-2.6.12-rc6/drivers/char/tpm/tpm.h linux-2.6.12-rc5-mm2/drivers/char/tpm/tpm.h
@@ -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,

@@ -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 *,

149 lines not on this page · raw message