Messages in this thread |  | | Subject | Re: [PATCH 3/3] tpm: ibmvtpm: Add support for TPM 2 | From | Nayna <> | Date | Thu, 13 Feb 2020 12:53:38 -0500 |
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On 2/4/20 8:27 AM, Stefan Berger wrote: > From: Stefan Berger <stefanb@linux.ibm.com> > > Support TPM 2 in the IBM vTPM driver. The hypervisor tells us what > version of TPM is connected through the vio_device_id. > > In case a TPM 2 is found, we set the TPM_OPS_AUTO_STARTUP flag to > have properly initialize the TPM and driver. > > Signed-off-by: Stefan Berger <stefanb@linux.ibm.com> > --- > drivers/char/tpm/tpm_ibmvtpm.c | 8 +++++++- > 1 file changed, 7 insertions(+), 1 deletion(-) > > diff --git a/drivers/char/tpm/tpm_ibmvtpm.c b/drivers/char/tpm/tpm_ibmvtpm.c > index eee566eddb35..d479d64a65aa 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); > @@ -443,7 +444,7 @@ static bool tpm_ibmvtpm_req_canceled(struct tpm_chip *chip, u8 status) > return (status == 0); > } > > -static const struct tpm_class_ops tpm_ibmvtpm = { > +static struct tpm_class_ops tpm_ibmvtpm = { > .recv = tpm_ibmvtpm_recv, > .send = tpm_ibmvtpm_send, > .cancel = tpm_ibmvtpm_cancel, > @@ -672,6 +673,11 @@ 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; > + tpm_ibmvtpm.flags = TPM_OPS_AUTO_STARTUP;
TPM_OPS_AUTO_STARTUP flag isn't set for vTPM 1.2. What is different in case of vTPM 2.0 ?
Thanks & Regards,
- Nayna
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