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| author | Stefan Berger <stefanb@linux.ibm.com> | 2020-03-12 18:53:32 +0300 |
|---|---|---|
| committer | Jarkko Sakkinen <jarkko.sakkinen@linux.intel.com> | 2020-03-15 21:13:33 +0300 |
| commit | 18b3670d79ae9948a5839f0956a47e4eb4130a63 (patch) | |
| tree | 22fa47b4b100427f22ec14a2074493d2015a912a /drivers/char/tpm/tpm_ibmvtpm.c | |
| parent | d8d74ea3c00214aee1e1826ca18e77944812b9b4 (diff) | |
| download | linux-18b3670d79ae9948a5839f0956a47e4eb4130a63.tar.xz | |
tpm: ibmvtpm: Add support for TPM2
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>
Acked-by: Nayna Jain <nayna@linux.ibm.com>
Tested-by: Nayna Jain <nayna@linux.ibm.com>
Reviewed-by: Jarkko Sakkinen <jarkko.sakkinen@linux.intel.com>
Signed-off-by: Jarkko Sakkinen <jarkko.sakkinen@linux.intel.com>
Diffstat (limited to 'drivers/char/tpm/tpm_ibmvtpm.c')
| -rw-r--r-- | drivers/char/tpm/tpm_ibmvtpm.c | 8 |
1 files changed, 8 insertions, 0 deletions
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)) { |