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path: root/drivers/char/tpm/tpm_infineon.c
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Diffstat (limited to 'drivers/char/tpm/tpm_infineon.c')
-rw-r--r--drivers/char/tpm/tpm_infineon.c237
1 files changed, 146 insertions, 91 deletions
diff --git a/drivers/char/tpm/tpm_infineon.c b/drivers/char/tpm/tpm_infineon.c
index 0e3241645c19..8198dbb7370f 100644
--- a/drivers/char/tpm/tpm_infineon.c
+++ b/drivers/char/tpm/tpm_infineon.c
@@ -1,10 +1,11 @@
/*
* 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>
+ * Sirrix AG - security technologies, http://www.sirrix.com and
* Applied Data Security Group, Ruhr-University Bochum, Germany
* Project-Homepage: http://www.prosec.rub.de/tpm
*
@@ -12,9 +13,9 @@
* modify it under the terms of the GNU General Public License as
* published by the Free Software Foundation, version 2 of the
* License.
- *
*/
+#include <linux/pnp.h>
#include "tpm.h"
/* Infineon specific definitions */
@@ -26,8 +27,13 @@
#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 PnP-call */
+static int TPM_INF_DATA;
+static int TPM_INF_ADDR;
+static int TPM_INF_BASE;
+static int TPM_INF_PORT_LEN;
/* TPM header definitions */
enum infineon_tpm_header {
@@ -139,11 +145,9 @@ static int wait(struct tpm_chip *chip, int wait_for_bit)
}
if (i == TPM_MAX_TRIES) { /* timeout occurs */
if (wait_for_bit == STAT_XFE)
- dev_err(&chip->pci_dev->dev,
- "Timeout in wait(STAT_XFE)\n");
+ dev_err(chip->dev, "Timeout in wait(STAT_XFE)\n");
if (wait_for_bit == STAT_RDA)
- dev_err(&chip->pci_dev->dev,
- "Timeout in wait(STAT_RDA)\n");
+ dev_err(chip->dev, "Timeout in wait(STAT_RDA)\n");
return -EIO;
}
return 0;
@@ -166,7 +170,7 @@ static void wait_and_send(struct tpm_chip *chip, u8 sendbyte)
static void tpm_wtx(struct tpm_chip *chip)
{
number_of_wtx++;
- dev_info(&chip->pci_dev->dev, "Granting WTX (%02d / %02d)\n",
+ dev_info(chip->dev, "Granting WTX (%02d / %02d)\n",
number_of_wtx, TPM_MAX_WTX_PACKAGES);
wait_and_send(chip, TPM_VL_VER);
wait_and_send(chip, TPM_CTRL_WTX);
@@ -177,7 +181,7 @@ static void tpm_wtx(struct tpm_chip *chip)
static void tpm_wtx_abort(struct tpm_chip *chip)
{
- dev_info(&chip->pci_dev->dev, "Aborting WTX\n");
+ dev_info(chip->dev, "Aborting WTX\n");
wait_and_send(chip, TPM_VL_VER);
wait_and_send(chip, TPM_CTRL_WTX_ABORT);
wait_and_send(chip, 0x00);
@@ -202,7 +206,7 @@ recv_begin:
}
if (buf[0] != TPM_VL_VER) {
- dev_err(&chip->pci_dev->dev,
+ dev_err(chip->dev,
"Wrong transport protocol implementation!\n");
return -EIO;
}
@@ -217,8 +221,7 @@ recv_begin:
}
if ((size == 0x6D00) && (buf[1] == 0x80)) {
- dev_err(&chip->pci_dev->dev,
- "Error handling on vendor layer!\n");
+ dev_err(chip->dev, "Error handling on vendor layer!\n");
return -EIO;
}
@@ -230,7 +233,7 @@ recv_begin:
}
if (buf[1] == TPM_CTRL_WTX) {
- dev_info(&chip->pci_dev->dev, "WTX-package received\n");
+ dev_info(chip->dev, "WTX-package received\n");
if (number_of_wtx < TPM_MAX_WTX_PACKAGES) {
tpm_wtx(chip);
goto recv_begin;
@@ -241,14 +244,14 @@ recv_begin:
}
if (buf[1] == TPM_CTRL_WTX_ABORT_ACK) {
- dev_info(&chip->pci_dev->dev, "WTX-abort acknowledged\n");
+ dev_info(chip->dev, "WTX-abort acknowledged\n");
return size;
}
if (buf[1] == TPM_CTRL_ERROR) {
- dev_err(&chip->pci_dev->dev, "ERROR-package received:\n");
+ dev_err(chip->dev, "ERROR-package received:\n");
if (buf[4] == TPM_INF_NAK)
- dev_err(&chip->pci_dev->dev,
+ dev_err(chip->dev,
"-> Negative acknowledgement"
" - retransmit command!\n");
return -EIO;
@@ -267,7 +270,7 @@ static int tpm_inf_send(struct tpm_chip *chip, u8 * buf, size_t count)
ret = empty_fifo(chip, 1);
if (ret) {
- dev_err(&chip->pci_dev->dev, "Timeout while clearing FIFO\n");
+ dev_err(chip->dev, "Timeout while clearing FIFO\n");
return -EIO;
}
@@ -305,12 +308,18 @@ 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.
*/
}
+static u8 tpm_inf_status(struct tpm_chip *chip)
+{
+ return inb(chip->vendor->base + STAT);
+}
+
static DEVICE_ATTR(pubek, S_IRUGO, tpm_show_pubek, NULL);
static DEVICE_ATTR(pcrs, S_IRUGO, tpm_show_pcrs, NULL);
static DEVICE_ATTR(caps, S_IRUGO, tpm_show_caps, NULL);
@@ -339,129 +348,175 @@ static struct tpm_vendor_specific tpm_inf = {
.recv = tpm_inf_recv,
.send = tpm_inf_send,
.cancel = tpm_inf_cancel,
+ .status = tpm_inf_status,
.req_complete_mask = 0,
.req_complete_val = 0,
.attr_group = &inf_attr_grp,
.miscdev = {.fops = &inf_ops,},
};
-static int __devinit tpm_inf_probe(struct pci_dev *pci_dev,
- const struct pci_device_id *pci_id)
+static const struct pnp_device_id tpm_pnp_tbl[] = {
+ /* Infineon TPMs */
+ {"IFX0101", 0},
+ {"IFX0102", 0},
+ {"", 0}
+};
+
+MODULE_DEVICE_TABLE(pnp, tpm_pnp_tbl);
+
+static int __devinit tpm_inf_pnp_probe(struct pnp_dev *dev,
+ const struct pnp_device_id *dev_id)
{
int rc = 0;
u8 iol, ioh;
int vendorid[2];
int version[2];
int productid[2];
-
- if (pci_enable_device(pci_dev))
- return -EIO;
-
- dev_info(&pci_dev->dev, "LPC-bus found at 0x%x\n", pci_id->device);
+ char chipname[20];
+
+ /* read IO-ports through PnP */
+ if (pnp_port_valid(dev, 0) && pnp_port_valid(dev, 1) &&
+ !(pnp_port_flags(dev, 0) & IORESOURCE_DISABLED)) {
+ TPM_INF_ADDR = pnp_port_start(dev, 0);
+ TPM_INF_DATA = (TPM_INF_ADDR + 1);
+ TPM_INF_BASE = pnp_port_start(dev, 1);
+ TPM_INF_PORT_LEN = pnp_port_len(dev, 1);
+ if (!TPM_INF_PORT_LEN)
+ return -EINVAL;
+ dev_info(&dev->dev, "Found %s with ID %s\n",
+ dev->name, dev_id->id);
+ if (!((TPM_INF_BASE >> 8) & 0xff))
+ return -EINVAL;
+ /* publish my base address and request region */
+ tpm_inf.base = TPM_INF_BASE;
+ if (request_region
+ (tpm_inf.base, TPM_INF_PORT_LEN, "tpm_infineon0") == NULL) {
+ release_region(tpm_inf.base, TPM_INF_PORT_LEN);
+ return -EINVAL;
+ }
+ } else {
+ return -EINVAL;
+ }
/* 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;
-
- if (tpm_inf.base == 0) {
- dev_err(&pci_dev->dev, "No IO-ports set!\n");
- pci_disable_device(pci_dev);
- return -ENODEV;
+ 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:
+ snprintf(chipname, sizeof(chipname), " (SLD 9630 TT 1.1)");
+ break;
+ case 11:
+ snprintf(chipname, sizeof(chipname), " (SLB 9635 TT 1.2)");
+ break;
+ default:
+ snprintf(chipname, sizeof(chipname), " (unknown chip)");
+ break;
+ }
+
+ if ((vendorid[0] << 8 | vendorid[1]) == (TPM_INFINEON_DEV_VEN_VALUE)) {
+
+ /* 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(&dev->dev,
+ "Could not set IO-ports to %04x\n",
+ tpm_inf.base);
+ release_region(tpm_inf.base, TPM_INF_PORT_LEN);
+ 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: "
+ dev_info(&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.base,
+ 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);
+ rc = tpm_register_hardware(&dev->dev, &tpm_inf);
if (rc < 0) {
- pci_disable_device(pci_dev);
+ release_region(tpm_inf.base, TPM_INF_PORT_LEN);
return -ENODEV;
}
return 0;
} else {
- dev_info(&pci_dev->dev, "No Infineon TPM found!\n");
- pci_disable_device(pci_dev);
+ dev_info(&dev->dev, "No Infineon TPM found!\n");
return -ENODEV;
}
}
-static struct pci_device_id tpm_pci_tbl[] __devinitdata = {
- {PCI_DEVICE(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82801BA_0)},
- {PCI_DEVICE(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82801CA_12)},
- {PCI_DEVICE(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82801DB_0)},
- {PCI_DEVICE(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82801DB_12)},
- {PCI_DEVICE(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82801EB_0)},
- {PCI_DEVICE(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_ICH6_0)},
- {PCI_DEVICE(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_ICH6_1)},
- {PCI_DEVICE(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_ICH6_2)},
- {0,}
-};
+static __devexit void tpm_inf_pnp_remove(struct pnp_dev *dev)
+{
+ struct tpm_chip *chip = pnp_get_drvdata(dev);
-MODULE_DEVICE_TABLE(pci, tpm_pci_tbl);
+ if (chip) {
+ release_region(chip->vendor->base, TPM_INF_PORT_LEN);
+ tpm_remove_hardware(chip->dev);
+ }
+}
-static struct pci_driver inf_pci_driver = {
- .name = "tpm_inf",
- .id_table = tpm_pci_tbl,
- .probe = tpm_inf_probe,
- .remove = __devexit_p(tpm_remove),
- .suspend = tpm_pm_suspend,
- .resume = tpm_pm_resume,
+static struct pnp_driver tpm_inf_pnp = {
+ .name = "tpm_inf_pnp",
+ .driver = {
+ .owner = THIS_MODULE,
+ .suspend = tpm_pm_suspend,
+ .resume = tpm_pm_resume,
+ },
+ .id_table = tpm_pnp_tbl,
+ .probe = tpm_inf_pnp_probe,
+ .remove = tpm_inf_pnp_remove,
};
static int __init init_inf(void)
{
- return pci_register_driver(&inf_pci_driver);
+ return pnp_register_driver(&tpm_inf_pnp);
}
static void __exit cleanup_inf(void)
{
- pci_unregister_driver(&inf_pci_driver);
+ pnp_unregister_driver(&tpm_inf_pnp);
}
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("1.6");
MODULE_LICENSE("GPL");
Copyright © 1996 – 2023 Jason A. Donenfeld. All Rights Reverse Engineered.