Realized the tpm_lpc_init function isn't really necessary. Replaced it
with vendor specific logic to find out the address the BIOS mapped the TPM
to. This patch removes the tpm_lpc_init function, enums associated with
it and calls to it. The patch also implements the replacement
functionality.
Signed-off-by: Kylene Hall <[email protected]>
---
diff -uprN linux-2.6.12-rc3/drivers/char/tpm/tpm_atmel.c kernel/linux-2.6.12-rc3-tpmdd/drivers/char/tpm/tpm_atmel.c
--- linux-2.6.12-rc3/drivers/char/tpm/tpm_atmel.c 2005-05-09 14:15:55.000000000 -0500
+++ kernel/linux-2.6.12-rc3-tpmdd/drivers/char/tpm/tpm_atmel.c 2005-05-12 14:07:41.000000000 -0500
@@ -22,8 +22,9 @@
#include "tpm.h"
/* Atmel definitions */
-enum tpm_atmel_addr{
- TPM_ATML_BASE = 0x400
+enum tpm_atmel_addr {
+ TPM_ATMEL_BASE_ADDR_LO = 0x08,
+ TPM_ATMEL_BASE_ADDR_HI = 0x09
};
/* write status bits */
@@ -148,7 +149,6 @@ static struct tpm_vendor_specific tpm_at
.req_complete_mask = ATML_STATUS_BUSY | ATML_STATUS_DATA_AVAIL,
.req_complete_val = ATML_STATUS_DATA_AVAIL,
.req_canceled = ATML_STATUS_READY,
- .base = TPM_ATML_BASE,
.attr_group = &atmel_attr_grp,
.miscdev.fops = &atmel_ops,
};
@@ -158,14 +158,16 @@ 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_ATMEL_BASE_ADDR_LO );
+ hi = tpm_read_index( 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'
diff -uprN linux-2.6.12-rc3/drivers/char/tpm/tpm.c kernel/linux-2.6.12-rc3-tpmdd/drivers/char/tpm/tpm.c
--- linux-2.6.12-rc3/drivers/char/tpm/tpm.c 2005-05-09 14:15:55.000000000 -0500
+++ kernel/linux-2.6.12-rc3-tpmdd/drivers/char/tpm/tpm.c 2005-05-12 14:07:41.000000000 -0500
@@ -35,25 +35,6 @@ enum tpm_const {
TPM_NUM_MASK_ENTRIES = TPM_NUM_DEVICES / (8 * sizeof(int))
};
- /* PCI configuration addresses */
-enum tpm_pci_config_addr {
- PCI_GEN_PMCON_1 = 0xA0,
- PCI_GEN1_DEC = 0xE4,
- PCI_LPC_EN = 0xE6,
- PCI_GEN2_DEC = 0xEC
-};
-
-enum tpm_config {
- TPM_LOCK_REG = 0x0D,
- TPM_INTERUPT_REG = 0x0A,
- TPM_BASE_ADDR_LO = 0x08,
- TPM_BASE_ADDR_HI = 0x09,
- TPM_UNLOCK_VALUE = 0x55,
- TPM_LOCK_VALUE = 0xAA,
- TPM_DISABLE_INTERUPT_VALUE = 0x00
-};
-
-
static LIST_HEAD(tpm_chip_list);
static DEFINE_SPINLOCK(driver_lock);
static int dev_mask[TPM_NUM_MASK_ENTRIES];
@@ -585,10 +520,6 @@ 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;
}
diff -uprN linux-2.6.12-rc3/drivers/char/tpm/tpm.h kernel/linux-2.6.12-rc3-tpmdd/drivers/char/tpm/tpm.h
--- linux-2.6.12-rc3/drivers/char/tpm/tpm.h 2005-05-09 14:15:55.000000000 -0500
+++ kernel/linux-2.6.12-rc3-tpmdd/drivers/char/tpm/tpm.h 2005-05-12 14:07:41.000000000 -0500
@@ -88,8 +88,6 @@ static inline void tpm_write_index(int i
outb(value & 0xFF, TPM_DATA);
}
-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 *);
diff -uprN linux-2.6.12-rc3/drivers/char/tpm/tpm_nsc.c kernel/linux-2.6.12-rc3-tpmdd/drivers/char/tpm/tpm_nsc.c
--- linux-2.6.12-rc3/drivers/char/tpm/tpm_nsc.c 2005-05-09 14:15:55.000000000 -0500
+++ kernel/linux-2.6.12-rc3-tpmdd/drivers/char/tpm/tpm_nsc.c 2005-05-12 14:07:41.000000000 -0500
@@ -22,9 +22,13 @@
#include "tpm.h"
/* National definitions */
-enum tpm_nsc_addr {
+enum tpm_nsc_addr{
TPM_NSC_BASE = 0x360,
- TPM_NSC_IRQ = 0x07
+ 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 {
@@ -44,7 +48,7 @@ enum tpm_nsc_status_loc {
};
/* status bits */
-enum tpm_nsc_status{
+enum tpm_nsc_status {
NSC_STATUS_OBF = 0x01, /* output buffer full */
NSC_STATUS_IBF = 0x02, /* input buffer full */
NSC_STATUS_F0 = 0x04, /* F0 */
@@ -246,7 +250,6 @@ static struct tpm_vendor_specific tpm_ns
.req_complete_mask = NSC_STATUS_OBF,
.req_complete_val = NSC_STATUS_OBF,
.req_canceled = NSC_STATUS_RDY,
- .base = TPM_NSC_BASE,
.attr_group = &nsc_attr_grp,
.miscdev.fops = &nsc_ops,
@@ -256,15 +259,16 @@ static int __devinit tpm_nsc_init(struct
const struct pci_device_id *pci_id)
{
int rc = 0;
+ int lo, hi;
+
+ 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;
- if (tpm_lpc_bus_init(pci_dev, TPM_NSC_BASE)) {
- rc = -ENODEV;
- goto out_err;
- }
-
/* verify that it is a National part (SID) */
if (tpm_read_index(NSC_SID_INDEX) != 0xEF) {
rc = -ENODEV;
-
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