Merge ../to-linus

3 files changed, 141 insertions, 57 deletions

diff --git a/drivers/char/tpm/Kconfig b/drivers/char/tpm/Kconfig
index 94a3b3e..79e9832 100644
--- a/drivers/char/tpm/Kconfig
+++ b/drivers/char/tpm/Kconfig
@@ -17,6 +17,8 @@ config TCG_TPM
 	  obtained at: <http://sourceforge.net/projects/trousers>.  To 
 	  compile this driver as a module, choose M here; the module 
 	  will be called tpm. If unsure, say N.
+	  Note: For more TPM drivers enable CONFIG_PNP, CONFIG_ACPI_BUS
+	  and CONFIG_PNPACPI.
 
 config TCG_NSC
 	tristate "National Semiconductor TPM Interface"
@@ -36,12 +38,13 @@ config TCG_ATMEL
 	  as a module, choose M here; the module will be called tpm_atmel.
 
 config TCG_INFINEON
-	tristate "Infineon Technologies SLD 9630 TPM Interface"
-	depends on TCG_TPM
+	tristate "Infineon Technologies TPM Interface"
+	depends on TCG_TPM && PNPACPI
 	---help---
 	  If you have a TPM security chip from Infineon Technologies
-	  say Yes and it will be accessible from within Linux.  To
-	  compile this driver as a module, choose M here; the module
+	  (either SLD 9630 TT 1.1 or SLB 9635 TT 1.2) say Yes and it
+	  will be accessible from within Linux.
+	  To compile this driver as a module, choose M here; the module
 	  will be called tpm_infineon.
 	  Further information on this driver and the supported hardware
 	  can be found at http://www.prosec.rub.de/tpm
diff --git a/drivers/char/tpm/tpm_infineon.c b/drivers/char/tpm/tpm_infineon.c
index 0e32416..dc8c540 100644
--- a/drivers/char/tpm/tpm_infineon.c
+++ b/drivers/char/tpm/tpm_infineon.c
@@ -1,7 +1,7 @@
 /*
  * Description:
  * Device Driver for the Infineon Technologies
- * SLD 9630 TT Trusted Platform Module
+ * SLD 9630 TT 1.1 and SLB 9635 TT 1.2 Trusted Platform Module
  * Specifications at www.trustedcomputinggroup.org
  *
  * Copyright (C) 2005, Marcel Selhorst <selhorst@crypto.rub.de>
@@ -12,9 +12,10 @@
  * modify it under the terms of the GNU General Public License as
  * published by the Free Software Foundation, version 2 of the
  * License.
- *
  */
 
+#include <acpi/acpi_bus.h>
+#include <linux/pnp.h>
 #include "tpm.h"
 
 /* Infineon specific definitions */
@@ -26,8 +27,11 @@
 #define	TPM_MSLEEP_TIME 	3
 /* gives number of max. msleep()-calls before throwing timeout */
 #define	TPM_MAX_TRIES		5000
-#define	TCPA_INFINEON_DEV_VEN_VALUE	0x15D1
-#define	TPM_DATA 			(TPM_ADDR + 1) & 0xff
+#define	TPM_INFINEON_DEV_VEN_VALUE	0x15D1
+
+/* These values will be filled after ACPI-call */
+static int TPM_INF_DATA = 0;
+static int TPM_INF_ADDR = 0;
 
 /* TPM header definitions */
 enum infineon_tpm_header {
@@ -305,9 +309,10 @@ static int tpm_inf_send(struct tpm_chip *chip, u8 * buf, size_t count)
 
 static void tpm_inf_cancel(struct tpm_chip *chip)
 {
-	/* Nothing yet!
-	   This has something to do with the internal functions
-	   of the TPM. Abort isn't really necessary...
+	/*
+	   Since we are using the legacy mode to communicate
+	   with the TPM, we have no cancel functions, but have
+	   a workaround for interrupting the TPM through WTX.
 	 */
 }
 
@@ -345,6 +350,32 @@ static struct tpm_vendor_specific tpm_inf = {
 	.miscdev = {.fops = &inf_ops,},
 };
 
+static const struct pnp_device_id tpm_pnp_tbl[] = {
+	/* Infineon TPMs */
+	{"IFX0101", 0},
+	{"IFX0102", 0},
+	{"", 0}
+};
+
+static int __devinit tpm_inf_acpi_probe(struct pnp_dev *dev,
+					const struct pnp_device_id *dev_id)
+{
+	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);
+	if (!((tpm_inf.base >> 8) & 0xff))
+		tpm_inf.base = 0;
+	return 0;
+}
+
+static struct pnp_driver tpm_inf_pnp = {
+	.name = "tpm_inf_pnp",
+	.id_table = tpm_pnp_tbl,
+	.probe = tpm_inf_acpi_probe,
+};
+
 static int __devinit tpm_inf_probe(struct pci_dev *pci_dev,
 				   const struct pci_device_id *pci_id)
 {
@@ -353,64 +384,99 @@ static int __devinit tpm_inf_probe(struct pci_dev *pci_dev,
 	int vendorid[2];
 	int version[2];
 	int productid[2];
+	char chipname[20];
 
 	if (pci_enable_device(pci_dev))
 		return -EIO;
 
 	dev_info(&pci_dev->dev, "LPC-bus found at 0x%x\n", pci_id->device);
 
+	/* read IO-ports from ACPI */
+	pnp_register_driver(&tpm_inf_pnp);
+	pnp_unregister_driver(&tpm_inf_pnp);
+
+	/* Make sure, we have received valid config ports */
+	if (!TPM_INF_ADDR) {
+		pci_disable_device(pci_dev);
+		return -EIO;
+	}
+
 	/* query chip for its vendor, its version number a.s.o. */
-	outb(ENABLE_REGISTER_PAIR, TPM_ADDR);
-	outb(IDVENL, TPM_ADDR);
-	vendorid[1] = inb(TPM_DATA);
-	outb(IDVENH, TPM_ADDR);
-	vendorid[0] = inb(TPM_DATA);
-	outb(IDPDL, TPM_ADDR);
-	productid[1] = inb(TPM_DATA);
-	outb(IDPDH, TPM_ADDR);
-	productid[0] = inb(TPM_DATA);
-	outb(CHIP_ID1, TPM_ADDR);
-	version[1] = inb(TPM_DATA);
-	outb(CHIP_ID2, TPM_ADDR);
-	version[0] = inb(TPM_DATA);
-
-	if ((vendorid[0] << 8 | vendorid[1]) == (TCPA_INFINEON_DEV_VEN_VALUE)) {
-
-		/* read IO-ports from TPM */
-		outb(IOLIMH, TPM_ADDR);
-		ioh = inb(TPM_DATA);
-		outb(IOLIML, TPM_ADDR);
-		iol = inb(TPM_DATA);
-		tpm_inf.base = (ioh << 8) | iol;
+	outb(ENABLE_REGISTER_PAIR, TPM_INF_ADDR);
+	outb(IDVENL, TPM_INF_ADDR);
+	vendorid[1] = inb(TPM_INF_DATA);
+	outb(IDVENH, TPM_INF_ADDR);
+	vendorid[0] = inb(TPM_INF_DATA);
+	outb(IDPDL, TPM_INF_ADDR);
+	productid[1] = inb(TPM_INF_DATA);
+	outb(IDPDH, TPM_INF_ADDR);
+	productid[0] = inb(TPM_INF_DATA);
+	outb(CHIP_ID1, TPM_INF_ADDR);
+	version[1] = inb(TPM_INF_DATA);
+	outb(CHIP_ID2, TPM_INF_ADDR);
+	version[0] = inb(TPM_INF_DATA);
+
+	switch ((productid[0] << 8) | productid[1]) {
+	case 6:
+		sprintf(chipname, " (SLD 9630 TT 1.1)");
+		break;
+	case 11:
+		sprintf(chipname, " (SLB 9635 TT 1.2)");
+		break;
+	default:
+		sprintf(chipname, " (unknown chip)");
+		break;
+	}
+	chipname[19] = 0;
+
+	if ((vendorid[0] << 8 | vendorid[1]) == (TPM_INFINEON_DEV_VEN_VALUE)) {
 
 		if (tpm_inf.base == 0) {
-			dev_err(&pci_dev->dev, "No IO-ports set!\n");
+			dev_err(&pci_dev->dev, "No IO-ports found!\n");
 			pci_disable_device(pci_dev);
-			return -ENODEV;
+			return -EIO;
+		}
+		/* configure TPM with IO-ports */
+		outb(IOLIMH, TPM_INF_ADDR);
+		outb(((tpm_inf.base >> 8) & 0xff), TPM_INF_DATA);
+		outb(IOLIML, TPM_INF_ADDR);
+		outb((tpm_inf.base & 0xff), TPM_INF_DATA);
+
+		/* control if IO-ports are set correctly */
+		outb(IOLIMH, TPM_INF_ADDR);
+		ioh = inb(TPM_INF_DATA);
+		outb(IOLIML, TPM_INF_ADDR);
+		iol = inb(TPM_INF_DATA);
+
+		if ((ioh << 8 | iol) != tpm_inf.base) {
+			dev_err(&pci_dev->dev,
+				"Could not set IO-ports to %04x\n",
+				tpm_inf.base);
+			pci_disable_device(pci_dev);
+			return -EIO;
 		}
 
 		/* activate register */
-		outb(TPM_DAR, TPM_ADDR);
-		outb(0x01, TPM_DATA);
-		outb(DISABLE_REGISTER_PAIR, TPM_ADDR);
+		outb(TPM_DAR, TPM_INF_ADDR);
+		outb(0x01, TPM_INF_DATA);
+		outb(DISABLE_REGISTER_PAIR, TPM_INF_ADDR);
 
 		/* disable RESET, LP and IRQC */
 		outb(RESET_LP_IRQC_DISABLE, tpm_inf.base + CMD);
 
 		/* Finally, we're done, print some infos */
 		dev_info(&pci_dev->dev, "TPM found: "
+			 "config base 0x%x, "
 			 "io base 0x%x, "
 			 "chip version %02x%02x, "
 			 "vendor id %x%x (Infineon), "
 			 "product id %02x%02x"
 			 "%s\n",
+			 TPM_INF_ADDR,
 			 tpm_inf.base,
 			 version[0], version[1],
 			 vendorid[0], vendorid[1],
-			 productid[0], productid[1], ((productid[0] == 0)
-						      && (productid[1] ==
-							  6)) ?
-			 " (SLD 9630 TT 1.1)" : "");
+			 productid[0], productid[1], chipname);
 
 		rc = tpm_register_hardware(pci_dev, &tpm_inf);
 		if (rc < 0) {
@@ -462,6 +528,6 @@ module_init(init_inf);
 module_exit(cleanup_inf);
 
 MODULE_AUTHOR("Marcel Selhorst <selhorst@crypto.rub.de>");
-MODULE_DESCRIPTION("Driver for Infineon TPM SLD 9630 TT");
-MODULE_VERSION("1.4");
+MODULE_DESCRIPTION("Driver for Infineon TPM SLD 9630 TT 1.1 / SLB 9635 TT 1.2");
+MODULE_VERSION("1.5");
 MODULE_LICENSE("GPL");
diff --git a/drivers/char/watchdog/i8xx_tco.c b/drivers/char/watchdog/i8xx_tco.c
index f975dab..a13395e 100644
--- a/drivers/char/watchdog/i8xx_tco.c
+++ b/drivers/char/watchdog/i8xx_tco.c
@@ -1,5 +1,5 @@
 /*
- *	i8xx_tco 0.07:	TCO timer driver for i8xx chipsets
+ *	i8xx_tco:	TCO timer driver for i8xx chipsets
  *
  *	(c) Copyright 2000 kernel concepts <nils@kernelconcepts.de>, All Rights Reserved.
  *				http://www.kernelconcepts.de
@@ -63,6 +63,9 @@
  *  20050128 Wim Van Sebroeck <wim@iguana.be>
  *	0.07 Added support for the ICH4-M, ICH6, ICH6R, ICH6-M, ICH6W and ICH6RW
  *	     chipsets. Also added support for the "undocumented" ICH7 chipset.
+ *  20050807 Wim Van Sebroeck <wim@iguana.be>
+ *	0.08 Make sure that the watchdog is only "armed" when started.
+ *	     (Kernel Bug 4251)
  */
 
 /*
@@ -87,7 +90,7 @@
 #include "i8xx_tco.h"
 
 /* Module and version information */
-#define TCO_VERSION "0.07"
+#define TCO_VERSION "0.08"
 #define TCO_MODULE_NAME "i8xx TCO timer"
 #define TCO_DRIVER_NAME   TCO_MODULE_NAME ", v" TCO_VERSION
 #define PFX TCO_MODULE_NAME ": "
@@ -125,10 +128,18 @@ static int tco_timer_start (void)
 	unsigned char val;
 
 	spin_lock(&tco_lock);
+
+	/* disable chipset's NO_REBOOT bit */
+	pci_read_config_byte (i8xx_tco_pci, 0xd4, &val);
+	val &= 0xfd;
+	pci_write_config_byte (i8xx_tco_pci, 0xd4, val);
+
+	/* Bit 11: TCO Timer Halt -> 0 = The TCO timer is enabled to count */
 	val = inb (TCO1_CNT + 1);
 	val &= 0xf7;
 	outb (val, TCO1_CNT + 1);
 	val = inb (TCO1_CNT + 1);
+
 	spin_unlock(&tco_lock);
 
 	if (val & 0x08)
@@ -138,13 +149,20 @@ static int tco_timer_start (void)
 
 static int tco_timer_stop (void)
 {
-	unsigned char val;
+	unsigned char val, val1;
 
 	spin_lock(&tco_lock);
+	/* Bit 11: TCO Timer Halt -> 1 = The TCO timer is disabled */
 	val = inb (TCO1_CNT + 1);
 	val |= 0x08;
 	outb (val, TCO1_CNT + 1);
 	val = inb (TCO1_CNT + 1);
+
+	/* Set the NO_REBOOT bit to prevent later reboots, just for sure */
+	pci_read_config_byte (i8xx_tco_pci, 0xd4, &val1);
+	val1 |= 0x02;
+	pci_write_config_byte (i8xx_tco_pci, 0xd4, val1);
+
 	spin_unlock(&tco_lock);
 
 	if ((val & 0x08) == 0)
@@ -155,6 +173,7 @@ static int tco_timer_stop (void)
 static int tco_timer_keepalive (void)
 {
 	spin_lock(&tco_lock);
+	/* Reload the timer by writing to the TCO Timer Reload register */
 	outb (0x01, TCO1_RLD);
 	spin_unlock(&tco_lock);
 	return 0;
@@ -417,9 +436,8 @@ static unsigned char __init i8xx_tco_getdevice (void)
 			printk (KERN_ERR PFX "failed to get TCOBASE address\n");
 			return 0;
 		}
-		/*
-		 * Check chipset's NO_REBOOT bit
-		 */
+
+		/* Check chipset's NO_REBOOT bit */
 		pci_read_config_byte (i8xx_tco_pci, 0xd4, &val1);
 		if (val1 & 0x02) {
 			val1 &= 0xfd;
@@ -430,6 +448,10 @@ static unsigned char __init i8xx_tco_getdevice (void)
 				return 0;	/* Cannot reset NO_REBOOT bit */
 			}
 		}
+		/* Disable reboots untill the watchdog starts */
+		val1 |= 0x02;
+		pci_write_config_byte (i8xx_tco_pci, 0xd4, val1);
+
 		/* Set the TCO_EN bit in SMI_EN register */
 		if (!request_region (SMI_EN + 1, 1, "i8xx TCO")) {
 			printk (KERN_ERR PFX "I/O address 0x%04x already in use\n",
@@ -505,17 +527,10 @@ out:
 
 static void __exit watchdog_cleanup (void)
 {
-	u8 val;
-
 	/* Stop the timer before we leave */
 	if (!nowayout)
 		tco_timer_stop ();
 
-	/* Set the NO_REBOOT bit to prevent later reboots, just for sure */
-	pci_read_config_byte (i8xx_tco_pci, 0xd4, &val);
-	val |= 0x02;
-	pci_write_config_byte (i8xx_tco_pci, 0xd4, val);
-
 	/* Deregister */
 	misc_deregister (&i8xx_tco_miscdev);
 	unregister_reboot_notifier(&i8xx_tco_notifier);