From: Stefan Berger <stefanb@linux.vnet.ibm.com>
To: jarkko.sakkinen@linux.intel.com, linux-integrity@vger.kernel.org
Cc: aik@ozlabs.ru, david@gibson.dropbear.id.au,
linux-kernel@vger.kernel.org, nayna@linux.vnet.ibm.com,
gcwilson@linux.ibm.com, jgg@ziepe.ca,
Stefan Berger <stefanb@linux.ibm.com>
Subject: [PATCH v6 3/3] tpm: ibmvtpm: Add support for TPM2
Date: Wed, 4 Mar 2020 08:22:43 -0500 [thread overview]
Message-ID: <20200304132243.179402-4-stefanb@linux.vnet.ibm.com> (raw)
In-Reply-To: <20200304132243.179402-1-stefanb@linux.vnet.ibm.com>
From: Stefan Berger <stefanb@linux.ibm.com>
Support TPM2 in the IBM vTPM driver. The hypervisor tells us what
version of TPM is connected through the vio_device_id.
In case a TPM2 device is found, we set the TPM_CHIP_FLAG_TPM2 flag
and get the command codes attributes table. The driver does
not need the timeouts and durations, though.
Signed-off-by: Stefan Berger <stefanb@linux.ibm.com>
---
drivers/char/tpm/tpm.h | 1 +
drivers/char/tpm/tpm2-cmd.c | 2 +-
drivers/char/tpm/tpm_ibmvtpm.c | 8 ++++++++
3 files changed, 10 insertions(+), 1 deletion(-)
diff --git a/drivers/char/tpm/tpm.h b/drivers/char/tpm/tpm.h
index 2b2c225e1190..0fbcede241ea 100644
--- a/drivers/char/tpm/tpm.h
+++ b/drivers/char/tpm/tpm.h
@@ -226,6 +226,7 @@ int tpm2_auto_startup(struct tpm_chip *chip);
void tpm2_shutdown(struct tpm_chip *chip, u16 shutdown_type);
unsigned long tpm2_calc_ordinal_duration(struct tpm_chip *chip, u32 ordinal);
int tpm2_probe(struct tpm_chip *chip);
+int tpm2_get_cc_attrs_tbl(struct tpm_chip *chip);
int tpm2_find_cc(struct tpm_chip *chip, u32 cc);
int tpm2_init_space(struct tpm_space *space);
void tpm2_del_space(struct tpm_chip *chip, struct tpm_space *space);
diff --git a/drivers/char/tpm/tpm2-cmd.c b/drivers/char/tpm/tpm2-cmd.c
index 760329598b99..76f67b155bd5 100644
--- a/drivers/char/tpm/tpm2-cmd.c
+++ b/drivers/char/tpm/tpm2-cmd.c
@@ -615,7 +615,7 @@ ssize_t tpm2_get_pcr_allocation(struct tpm_chip *chip)
return rc;
}
-static int tpm2_get_cc_attrs_tbl(struct tpm_chip *chip)
+int tpm2_get_cc_attrs_tbl(struct tpm_chip *chip)
{
struct tpm_buf buf;
u32 nr_commands;
diff --git a/drivers/char/tpm/tpm_ibmvtpm.c b/drivers/char/tpm/tpm_ibmvtpm.c
index cfe40e7b1ba4..1a49db9e108e 100644
--- a/drivers/char/tpm/tpm_ibmvtpm.c
+++ b/drivers/char/tpm/tpm_ibmvtpm.c
@@ -29,6 +29,7 @@ static const char tpm_ibmvtpm_driver_name[] = "tpm_ibmvtpm";
static const struct vio_device_id tpm_ibmvtpm_device_table[] = {
{ "IBM,vtpm", "IBM,vtpm"},
+ { "IBM,vtpm", "IBM,vtpm20"},
{ "", "" }
};
MODULE_DEVICE_TABLE(vio, tpm_ibmvtpm_device_table);
@@ -672,6 +673,13 @@ static int tpm_ibmvtpm_probe(struct vio_dev *vio_dev,
if (rc)
goto init_irq_cleanup;
+ if (!strcmp(id->compat, "IBM,vtpm20")) {
+ chip->flags |= TPM_CHIP_FLAG_TPM2;
+ rc = tpm2_get_cc_attrs_tbl(chip);
+ if (rc)
+ goto init_irq_cleanup;
+ }
+
if (!wait_event_timeout(ibmvtpm->crq_queue.wq,
ibmvtpm->rtce_buf != NULL,
HZ)) {
--
2.23.0
next prev parent reply other threads:[~2020-03-04 13:23 UTC|newest]
Thread overview: 15+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-03-04 13:22 [PATCH v6 0/3] Enable vTPM 2.0 for the IBM vTPM driver Stefan Berger
2020-03-04 13:22 ` [PATCH v6 1/3] tpm: of: Handle IBM,vtpm20 case when getting log parameters Stefan Berger
2020-03-10 22:56 ` kbuild test robot
2020-03-11 12:58 ` Stefan Berger
2020-03-04 13:22 ` [PATCH v6 2/3] tpm: ibmvtpm: Wait for buffer to be set before proceeding Stefan Berger
2020-03-05 11:21 ` Jarkko Sakkinen
2020-03-04 13:22 ` Stefan Berger [this message]
2020-03-05 11:21 ` [PATCH v6 3/3] tpm: ibmvtpm: Add support for TPM2 Jarkko Sakkinen
2020-03-05 13:58 ` Stefan Berger
2020-03-06 18:33 ` Jarkko Sakkinen
2020-03-06 18:51 ` Stefan Berger
2020-03-07 11:09 ` Jarkko Sakkinen
2020-03-10 21:16 ` Nayna
2020-03-05 11:20 ` [PATCH v6 0/3] Enable vTPM 2.0 for the IBM vTPM driver Jarkko Sakkinen
2020-03-05 13:56 ` Stefan Berger
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