From 0f4e46cb107ddfedfc6319d377f7ad9cc4dc7c4b Mon Sep 17 00:00:00 2001 From: Kylene Jo Hall Date: Wed, 29 Jun 2005 09:32:28 -0500 Subject: [PATCH] tpm breaks 8139cp A problem was reported that the tpm driver was interfereing with networking on the 8139 chipset. The tpm driver was using a hard coded the memory address instead of the value the BIOS was putting the chip at. This was in the tpm_lpc_bus_init function. That function can be replaced with querying the value at Vendor specific locations. This patch replaces all calls to tpm_lpc_bus_init and the hardcoding of the base address with a lookup of the address at the correct vendor location. Signed-off-by: Kylene Hall Signed-off-by: Chris Wright Signed-off-by: Greg Kroah-Hartman --- drivers/char/tpm/tpm.c | 76 -------------------------------------------- drivers/char/tpm/tpm.h | 2 -- drivers/char/tpm/tpm_atmel.c | 16 ++++++---- drivers/char/tpm/tpm_nsc.c | 16 ++++++---- 4 files changed, 20 insertions(+), 90 deletions(-) diff --git a/drivers/char/tpm/tpm.c b/drivers/char/tpm/tpm.c index 87235330fdbe..70b5a5a85bb7 100644 --- a/drivers/char/tpm/tpm.c +++ b/drivers/char/tpm/tpm.c @@ -32,12 +32,6 @@ #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 - static LIST_HEAD(tpm_chip_list); static DEFINE_SPINLOCK(driver_lock); static int dev_mask[32]; @@ -60,72 +54,6 @@ void tpm_time_expired(unsigned long ptr) 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 */ @@ -590,10 +518,6 @@ int tpm_pm_resume(struct pci_dev *pci_dev) 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 --git a/drivers/char/tpm/tpm.h b/drivers/char/tpm/tpm.h index de0c796fce80..116d8fd231db 100644 --- a/drivers/char/tpm/tpm.h +++ b/drivers/char/tpm/tpm.h @@ -79,8 +79,6 @@ static inline void tpm_write_index(int index, int value) } 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 *); diff --git a/drivers/char/tpm/tpm_atmel.c b/drivers/char/tpm/tpm_atmel.c index f9333e729b62..530e3ce3b7ca 100644 --- a/drivers/char/tpm/tpm_atmel.c +++ b/drivers/char/tpm/tpm_atmel.c @@ -22,7 +22,10 @@ #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 @@ -127,7 +130,6 @@ static struct tpm_vendor_specific tpm_atmel = { .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, .miscdev = { .fops = &atmel_ops, }, }; @@ -136,14 +138,16 @@ static int __devinit tpm_atml_init(struct pci_dev *pci_dev, { 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 --git a/drivers/char/tpm/tpm_nsc.c b/drivers/char/tpm/tpm_nsc.c index 9cce833a0923..af5ec7af32e3 100644 --- a/drivers/char/tpm/tpm_nsc.c +++ b/drivers/char/tpm/tpm_nsc.c @@ -24,6 +24,10 @@ /* National definitions */ #define TPM_NSC_BASE 0x360 #define TPM_NSC_IRQ 0x07 +#define TPM_NSC_BASE0_HI 0x60 +#define TPM_NSC_BASE0_LO 0x61 +#define TPM_NSC_BASE1_HI 0x62 +#define TPM_NSC_BASE1_LO 0x63 #define NSC_LDN_INDEX 0x07 #define NSC_SID_INDEX 0x20 @@ -234,7 +238,6 @@ static struct tpm_vendor_specific tpm_nsc = { .cancel = tpm_nsc_cancel, .req_complete_mask = NSC_STATUS_OBF, .req_complete_val = NSC_STATUS_OBF, - .base = TPM_NSC_BASE, .miscdev = { .fops = &nsc_ops, }, }; @@ -243,15 +246,16 @@ static int __devinit tpm_nsc_init(struct pci_dev *pci_dev, 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; -- cgit v1.2.3