[PATCH v7 00/10] Multi-instance vTPM proxy driver

Stefan Berger
2016-03-12T02:53:20Z

The following series of patches implements a multi-instance vTPM
proxy driver that can dynamically create TPM 'server' and client device
pairs.

Using an ioctl on the provided /dev/vtpmx, a client-side vTPM device
and a server side file descriptor is created. The file descriptor must
be passed to a TPM emulator. The device driver will initialize the
emulated TPM using TPM 1.2 or TPM 2 startup commands and it will read
the command durations from the device in case of a TPM 1.2. The choice
of emulated TPM device (1.2 or 2) must be provided with a flag in
the ioctl.

The driver is based on a recent checkout of James Morris's 'next'
branch and uses several recently posted patches from Jason and Jarkko.

Stefan

v6->v7:
- Adjusted name of driver to tpm_vtpm_proxy from tpm_vtpm. Adjust function
names, names of structures, and names of constants.
- Adjusted IOCTL to use magic 0xa1 rather than the completely used 0xa0.
- Extended driver documentation and added documentation of ioctl.
- Moved test program to own project (dropped patch 11).

v5->v6:
- Adapted errno's for unsupported flags and ioctls following Jason's comments

v4->v5:
- Introduced different error codes for unsupported flags and ioctls
- Added documentation patch

Jason Gunthorpe (4):
tpm: Get rid of chip->pdev
tpm: Get rid of devname
tpm: Provide strong locking for device removal
tpm: Split out the devm stuff from tpmm_chip_alloc

Stefan Berger (6):
tpm: Get rid of module locking
tpm: Replace device number bitmap with IDR
tpm: Introduce TPM_CHIP_FLAG_VIRTUAL
tpm: Proxy driver for supporting multiple emulated TPMs
tpm: Initialize TPM and get durations and timeouts
tpm: Add documentation for the tpm_vtpm device driver

Documentation/ioctl/ioctl-number.txt | 1 +
Documentation/tpm/tpm_vtpm_proxy.txt | 71 ++++
drivers/char/tpm/Kconfig | 10 +
drivers/char/tpm/Makefile | 1 +
drivers/char/tpm/tpm-chip.c | 221 ++++++++----
drivers/char/tpm/tpm-dev.c | 15 +-
drivers/char/tpm/tpm-interface.c | 50 +--
drivers/char/tpm/tpm-sysfs.c | 22 +-
drivers/char/tpm/tpm.h | 30 +-
drivers/char/tpm/tpm2-cmd.c | 8 +-
drivers/char/tpm/tpm_atmel.c | 14 +-
drivers/char/tpm/tpm_eventlog.c | 2 +-
drivers/char/tpm/tpm_eventlog.h | 2 +-
drivers/char/tpm/tpm_i2c_atmel.c | 16 +-
drivers/char/tpm/tpm_i2c_infineon.c | 6 +-
drivers/char/tpm/tpm_i2c_nuvoton.c | 24 +-
drivers/char/tpm/tpm_infineon.c | 22 +-
drivers/char/tpm/tpm_nsc.c | 20 +-
drivers/char/tpm/tpm_tis.c | 18 +-
drivers/char/tpm/tpm_vtpm_proxy.c | 644 +++++++++++++++++++++++++++++++++++
include/uapi/linux/Kbuild | 1 +
include/uapi/linux/vtpm_proxy.h | 42 +++
22 files changed, 1061 insertions(+), 179 deletions(-)
create mode 100644 Documentation/tpm/tpm_vtpm_proxy.txt
create mode 100644 drivers/char/tpm/tpm_vtpm_proxy.c
create mode 100644 include/uapi/linux/vtpm_proxy.h

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2.4.3