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Diffstat (limited to 'drivers/char/tpm')
-rw-r--r--drivers/char/tpm/tpm.h1
-rw-r--r--drivers/char/tpm/tpm_infineon.c79
-rw-r--r--drivers/char/tpm/tpm_tis.c20
3 files changed, 76 insertions, 24 deletions
diff --git a/drivers/char/tpm/tpm.h b/drivers/char/tpm/tpm.h
index 8e00b4ddd083..792868d24f2a 100644
--- a/drivers/char/tpm/tpm.h
+++ b/drivers/char/tpm/tpm.h
@@ -224,6 +224,7 @@ struct tpm_readpubek_params_out {
u8 algorithm[4];
u8 encscheme[2];
u8 sigscheme[2];
+ __be32 paramsize;
u8 parameters[12]; /*assuming RSA*/
__be32 keysize;
u8 modulus[256];
diff --git a/drivers/char/tpm/tpm_infineon.c b/drivers/char/tpm/tpm_infineon.c
index ecba4942fc8e..f58440791e65 100644
--- a/drivers/char/tpm/tpm_infineon.c
+++ b/drivers/char/tpm/tpm_infineon.c
@@ -39,12 +39,12 @@
struct tpm_inf_dev {
int iotype;
- void __iomem *mem_base; /* MMIO ioremap'd addr */
- unsigned long map_base; /* phys MMIO base */
- unsigned long map_size; /* MMIO region size */
- unsigned int index_off; /* index register offset */
+ void __iomem *mem_base; /* MMIO ioremap'd addr */
+ unsigned long map_base; /* phys MMIO base */
+ unsigned long map_size; /* MMIO region size */
+ unsigned int index_off; /* index register offset */
- unsigned int data_regs; /* Data registers */
+ unsigned int data_regs; /* Data registers */
unsigned int data_size;
unsigned int config_port; /* IO Port config index reg */
@@ -406,14 +406,14 @@ static const struct tpm_vendor_specific tpm_inf = {
.miscdev = {.fops = &inf_ops,},
};
-static const struct pnp_device_id tpm_pnp_tbl[] = {
+static const struct pnp_device_id tpm_inf_pnp_tbl[] = {
/* Infineon TPMs */
{"IFX0101", 0},
{"IFX0102", 0},
{"", 0}
};
-MODULE_DEVICE_TABLE(pnp, tpm_pnp_tbl);
+MODULE_DEVICE_TABLE(pnp, tpm_inf_pnp_tbl);
static int __devinit tpm_inf_pnp_probe(struct pnp_dev *dev,
const struct pnp_device_id *dev_id)
@@ -430,7 +430,7 @@ static int __devinit tpm_inf_pnp_probe(struct pnp_dev *dev,
if (pnp_port_valid(dev, 0) && pnp_port_valid(dev, 1) &&
!(pnp_port_flags(dev, 0) & IORESOURCE_DISABLED)) {
- tpm_dev.iotype = TPM_INF_IO_PORT;
+ tpm_dev.iotype = TPM_INF_IO_PORT;
tpm_dev.config_port = pnp_port_start(dev, 0);
tpm_dev.config_size = pnp_port_len(dev, 0);
@@ -459,9 +459,9 @@ static int __devinit tpm_inf_pnp_probe(struct pnp_dev *dev,
goto err_last;
}
} else if (pnp_mem_valid(dev, 0) &&
- !(pnp_mem_flags(dev, 0) & IORESOURCE_DISABLED)) {
+ !(pnp_mem_flags(dev, 0) & IORESOURCE_DISABLED)) {
- tpm_dev.iotype = TPM_INF_IO_MEM;
+ tpm_dev.iotype = TPM_INF_IO_MEM;
tpm_dev.map_base = pnp_mem_start(dev, 0);
tpm_dev.map_size = pnp_mem_len(dev, 0);
@@ -563,11 +563,11 @@ static int __devinit tpm_inf_pnp_probe(struct pnp_dev *dev,
"product id 0x%02x%02x"
"%s\n",
tpm_dev.iotype == TPM_INF_IO_PORT ?
- tpm_dev.config_port :
- tpm_dev.map_base + tpm_dev.index_off,
+ tpm_dev.config_port :
+ tpm_dev.map_base + tpm_dev.index_off,
tpm_dev.iotype == TPM_INF_IO_PORT ?
- tpm_dev.data_regs :
- tpm_dev.map_base + tpm_dev.data_regs,
+ tpm_dev.data_regs :
+ tpm_dev.map_base + tpm_dev.data_regs,
version[0], version[1],
vendorid[0], vendorid[1],
productid[0], productid[1], chipname);
@@ -607,20 +607,55 @@ static __devexit void tpm_inf_pnp_remove(struct pnp_dev *dev)
iounmap(tpm_dev.mem_base);
release_mem_region(tpm_dev.map_base, tpm_dev.map_size);
}
+ tpm_dev_vendor_release(chip);
tpm_remove_hardware(chip->dev);
}
}
+static int tpm_inf_pnp_suspend(struct pnp_dev *dev, pm_message_t pm_state)
+{
+ struct tpm_chip *chip = pnp_get_drvdata(dev);
+ int rc;
+ if (chip) {
+ u8 savestate[] = {
+ 0, 193, /* TPM_TAG_RQU_COMMAND */
+ 0, 0, 0, 10, /* blob length (in bytes) */
+ 0, 0, 0, 152 /* TPM_ORD_SaveState */
+ };
+ dev_info(&dev->dev, "saving TPM state\n");
+ rc = tpm_inf_send(chip, savestate, sizeof(savestate));
+ if (rc < 0) {
+ dev_err(&dev->dev, "error while saving TPM state\n");
+ return rc;
+ }
+ }
+ return 0;
+}
+
+static int tpm_inf_pnp_resume(struct pnp_dev *dev)
+{
+ /* Re-configure TPM after suspending */
+ tpm_config_out(ENABLE_REGISTER_PAIR, TPM_INF_ADDR);
+ tpm_config_out(IOLIMH, TPM_INF_ADDR);
+ tpm_config_out((tpm_dev.data_regs >> 8) & 0xff, TPM_INF_DATA);
+ tpm_config_out(IOLIML, TPM_INF_ADDR);
+ tpm_config_out((tpm_dev.data_regs & 0xff), TPM_INF_DATA);
+ /* activate register */
+ tpm_config_out(TPM_DAR, TPM_INF_ADDR);
+ tpm_config_out(0x01, TPM_INF_DATA);
+ tpm_config_out(DISABLE_REGISTER_PAIR, TPM_INF_ADDR);
+ /* disable RESET, LP and IRQC */
+ tpm_data_out(RESET_LP_IRQC_DISABLE, CMD);
+ return tpm_pm_resume(&dev->dev);
+}
+
static struct pnp_driver tpm_inf_pnp_driver = {
.name = "tpm_inf_pnp",
- .driver = {
- .owner = THIS_MODULE,
- .suspend = tpm_pm_suspend,
- .resume = tpm_pm_resume,
- },
- .id_table = tpm_pnp_tbl,
+ .id_table = tpm_inf_pnp_tbl,
.probe = tpm_inf_pnp_probe,
- .remove = __devexit_p(tpm_inf_pnp_remove),
+ .suspend = tpm_inf_pnp_suspend,
+ .resume = tpm_inf_pnp_resume,
+ .remove = __devexit_p(tpm_inf_pnp_remove)
};
static int __init init_inf(void)
@@ -638,5 +673,5 @@ module_exit(cleanup_inf);
MODULE_AUTHOR("Marcel Selhorst <m.selhorst@sirrix.com>");
MODULE_DESCRIPTION("Driver for Infineon TPM SLD 9630 TT 1.1 / SLB 9635 TT 1.2");
-MODULE_VERSION("1.9");
+MODULE_VERSION("1.9.2");
MODULE_LICENSE("GPL");
diff --git a/drivers/char/tpm/tpm_tis.c b/drivers/char/tpm/tpm_tis.c
index 0b73e4ec1add..ca15c04e5a8d 100644
--- a/drivers/char/tpm/tpm_tis.c
+++ b/drivers/char/tpm/tpm_tis.c
@@ -257,6 +257,10 @@ out:
return size;
}
+static int itpm;
+module_param(itpm, bool, 0444);
+MODULE_PARM_DESC(itpm, "Force iTPM workarounds (found on some Lenovo laptops)");
+
/*
* If interrupts are used (signaled by an irq set in the vendor structure)
* tpm.c can skip polling for the data to be available as the interrupt is
@@ -293,7 +297,7 @@ static int tpm_tis_send(struct tpm_chip *chip, u8 *buf, size_t len)
wait_for_stat(chip, TPM_STS_VALID, chip->vendor.timeout_c,
&chip->vendor.int_queue);
status = tpm_tis_status(chip);
- if ((status & TPM_STS_DATA_EXPECT) == 0) {
+ if (!itpm && (status & TPM_STS_DATA_EXPECT) == 0) {
rc = -EIO;
goto out_err;
}
@@ -467,6 +471,10 @@ static int tpm_tis_init(struct device *dev, resource_size_t start,
"1.2 TPM (device-id 0x%X, rev-id %d)\n",
vendor >> 16, ioread8(chip->vendor.iobase + TPM_RID(0)));
+ if (itpm)
+ dev_info(dev, "Intel iTPM workaround enabled\n");
+
+
/* Figure out the capabilities */
intfcaps =
ioread32(chip->vendor.iobase +
@@ -614,7 +622,14 @@ static int tpm_tis_pnp_suspend(struct pnp_dev *dev, pm_message_t msg)
static int tpm_tis_pnp_resume(struct pnp_dev *dev)
{
- return tpm_pm_resume(&dev->dev);
+ struct tpm_chip *chip = pnp_get_drvdata(dev);
+ int ret;
+
+ ret = tpm_pm_resume(&dev->dev);
+ if (!ret)
+ tpm_continue_selftest(chip);
+
+ return ret;
}
static struct pnp_device_id tpm_pnp_tbl[] __devinitdata = {
@@ -629,6 +644,7 @@ static struct pnp_device_id tpm_pnp_tbl[] __devinitdata = {
{"", 0}, /* User Specified */
{"", 0} /* Terminator */
};
+MODULE_DEVICE_TABLE(pnp, tpm_pnp_tbl);
static __devexit void tpm_tis_pnp_remove(struct pnp_dev *dev)
{
generated by cgit v1.2.3 (git 2.0.4) at 2024-06-15 06:42:24 +0000