1 files changed, 106 insertions, 40 deletions

diff --git a/drivers/char/tpm/tpm_infineon.c b/drivers/char/tpm/tpm_infineon.c
index 0e3241645c19..dc8c540391fd 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");