[PATCH v3 0/6] TPM 2.0 support
From: Jarkko Sakkinen
Date: Wed Oct 15 2014 - 07:37:37 EST
This patch set enables TPM2 protocol and provides drivers for FIFO and
CRB interfaces. In addition life-cycle model is somewhat improved (but
not yet fully fixed) for TPM device drivers. There's still work to do
in ref counting and locking but this patch set takes (I believe) the
correct interm steps towards right direction.
TPM2 sysfs attributes are placed to misc dev instead of binding them
to the platform device as misc dev represents the device to the user
space. TPM1 uses invalid place for the sysfs attributes.
Major changes since v1:
- Improved struct tpm_chip life-cycle by taking advantage of devres
- Refined sysfs attributes as simple key-values thereby not repeating
mistakes in TPM1 sysfs attributes.
- Documented functions in tpm-chip.c and tpm2-cmd.c.
- Documented sysfs attributes.
Major changes since v2:
- Lots of fixes in calling order in device drivers (thanks to Jason
Gunthorpe for pointing these out!).
- Attach sysfs attributes to the misc device because it represents
TPM device to the user space.
- I'm still pending to test the FIFO (tpm_tis) driver. Now I should
have system to actually get this done but I'm right now at the
- struct tpm_chip would need proper ref counting and locking applied
everywhere but this has been existing problem before this patch set.
It is a large change that I'm willing to work on after getting this
- It might be that in some cases PPI interface might be attached to
a wrong PPI interface if ACPI tree shows up having two PPI interface.
I think the way PPI interface is grabbed is invalid. Instead it should
be passed an ACPI handle to the device and it should take PPI interface
under that ACPi handle. I can add a fix to do this in v4 if everyone
Jarkko Sakkinen (5):
tpm: merge duplicate transmit_cmd() functions
tpm: two-phase chip management functions
tpm: TPM 2.0 commands
tpm: TPM 2.0 sysfs attributes
tpm: TPM 2.0 CRB Interface
Will Arthur (1):
tpm: TPM 2.0 FIFO Interface
Documentation/ABI/stable/sysfs-class-tpm2 | 72 ++++
drivers/char/tpm/Kconfig | 9 +
drivers/char/tpm/Makefile | 3 +-
drivers/char/tpm/tpm-chip.c | 209 ++++++++++++
drivers/char/tpm/tpm-dev.c | 7 +-
drivers/char/tpm/tpm-interface.c | 225 +++----------
drivers/char/tpm/tpm-sysfs.c | 23 +-
drivers/char/tpm/tpm.h | 106 +++++-
drivers/char/tpm/tpm2-cmd.c | 543 ++++++++++++++++++++++++++++++
drivers/char/tpm/tpm2-sysfs.c | 314 +++++++++++++++++
drivers/char/tpm/tpm_atmel.c | 11 +-
drivers/char/tpm/tpm_crb.c | 329 ++++++++++++++++++
drivers/char/tpm/tpm_i2c_atmel.c | 33 +-
drivers/char/tpm/tpm_i2c_infineon.c | 37 +-
drivers/char/tpm/tpm_i2c_nuvoton.c | 44 +--
drivers/char/tpm/tpm_i2c_stm_st33.c | 22 +-
drivers/char/tpm/tpm_ibmvtpm.c | 17 +-
drivers/char/tpm/tpm_infineon.c | 13 +-
drivers/char/tpm/tpm_nsc.c | 11 +-
drivers/char/tpm/tpm_tis.c | 160 +++++----
drivers/char/tpm/xen-tpmfront.c | 14 +-
21 files changed, 1813 insertions(+), 389 deletions(-)
create mode 100644 Documentation/ABI/stable/sysfs-class-tpm2
create mode 100644 drivers/char/tpm/tpm-chip.c
create mode 100644 drivers/char/tpm/tpm2-cmd.c
create mode 100644 drivers/char/tpm/tpm2-sysfs.c
create mode 100644 drivers/char/tpm/tpm_crb.c
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