kernel/linux.git/drivers/tee/tee_core.c, branch v5.6.17

compat_ioctl: move more drivers to compat_ptr_ioctl

2019-10-23T15:23:44+00:00

The .ioctl and .compat_ioctl file operations have the same prototype so they can both point to the same function, which works great almost all the time when all the commands are compatible. One exception is the s390 architecture, where a compat pointer is only 31 bit wide, and converting it into a 64-bit pointer requires calling compat_ptr(). Most drivers here will never run in s390, but since we now have a generic helper for it, it's easy enough to use it consistently. I double-checked all these drivers to ensure that all ioctl arguments are used as pointers or are ignored, but are not interpreted as integer values. Acked-by: Jason Gunthorpe Acked-by: Daniel Vetter Acked-by: Mauro Carvalho Chehab Acked-by: Greg Kroah-Hartman Acked-by: David Sterba Acked-by: Darren Hart (VMware) Acked-by: Jonathan Cameron Acked-by: Bjorn Andersson Acked-by: Dan Williams Signed-off-by: Arnd Bergmann

treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 282

2019-06-05T15:36:37+00:00

Based on 1 normalized pattern(s): this software is licensed under the terms of the gnu general public license version 2 as published by the free software foundation and may be copied distributed and modified under those terms this program is distributed in the hope that it will be useful but without any warranty without even the implied warranty of merchantability or fitness for a particular purpose see the gnu general public license for more details extracted by the scancode license scanner the SPDX license identifier GPL-2.0-only has been chosen to replace the boilerplate/reference in 285 file(s). Signed-off-by: Thomas Gleixner Reviewed-by: Alexios Zavras Reviewed-by: Allison Randal Cc: linux-spdx@vger.kernel.org Link: https://lkml.kernel.org/r/20190529141900.642774971@linutronix.de Signed-off-by: Greg Kroah-Hartman

Merge tag 'tee-misc-for-v5.1' of https://git.linaro.org/people/jens.wiklander/linux-tee into arm/drivers

2019-03-01T14:01:16+00:00

OP-TEE driver - dual license for optee_msg.h and optee_smc.h Generic - add cancellation support to client interface * tag 'tee-misc-for-v5.1' of https://git.linaro.org/people/jens.wiklander/linux-tee: tee: optee: update optee_msg.h and optee_smc.h to dual license tee: add cancellation support to client interface Signed-off-by: Arnd Bergmann

tee: add cancellation support to client interface

2019-02-28T12:49:29+00:00

Add support of cancellation request to the TEE kernel internal client interface. Can be used by software TPM drivers, that leverage TEE under the hood (for instance TPM2.0 mobile profile), for requesting cancellation of time-consuming operations (RSA key-pair generation etc.). Signed-off-by: Igor Opaniuk Signed-off-by: Jens Wiklander

tee: fix possible error pointer ctx dereferencing

2019-02-20T16:54:34+00:00

Add check for valid ctx pointer and then only dereference ctx to configure supp_nowait flag. Fixes: 42bf4152d8a7 ("tee: add supp_nowait flag in tee_context struct") Reported-by: Dan Carpenter Signed-off-by: Sumit Garg Signed-off-by: Arnd Bergmann

tee: add bus driver framework for TEE based devices

2019-02-01T14:12:46+00:00

Introduce a generic TEE bus driver concept for TEE based kernel drivers which would like to communicate with TEE based devices/services. Also add support in module device table for these new TEE based devices. In this TEE bus concept, devices/services are identified via Universally Unique Identifier (UUID) and drivers register a table of device UUIDs which they can support. So this TEE bus framework registers following apis: - match(): Iterates over the driver UUID table to find a corresponding match for device UUID. If a match is found, then this particular device is probed via corresponding probe api registered by the driver. This process happens whenever a device or a driver is registered with TEE bus. - uevent(): Notifies user-space (udev) whenever a new device is registered on this bus for auto-loading of modularized drivers. Also this framework allows for device enumeration to be specific to corresponding TEE implementation like OP-TEE etc. Signed-off-by: Sumit Garg Reviewed-by: Daniel Thompson Reviewed-by: Bhupesh Sharma Signed-off-by: Jens Wiklander

tee: add supp_nowait flag in tee_context struct

2019-02-01T14:12:46+00:00

This flag indicates that requests in this context should not wait for tee-supplicant daemon to be started if not present and just return with an error code. It is needed for requests which should be non-blocking in nature like ones arising from TEE based kernel drivers or any in kernel api that uses TEE internal client interface. Signed-off-by: Sumit Garg Reviewed-by: Daniel Thompson Signed-off-by: Jens Wiklander

tee: add kernel internal client interface

2018-08-24T09:57:37+00:00

Adds a kernel internal TEE client interface to be used by other drivers. Reviewed-by: Sumit Garg Tested-by: Sumit Garg Tested-by: Zeng Tao Signed-off-by: Jens Wiklander

tee: check shm references are consistent in offset/size

2018-05-07T09:51:03+00:00

This change prevents userland from referencing TEE shared memory outside the area initially allocated by its owner. Prior this change an application could not reference or access memory it did not own but it could reference memory not explicitly allocated by owner but still allocated to the owner due to the memory allocation granule. Reported-by: Alexandre Jutras Signed-off-by: Etienne Carriere Signed-off-by: Jens Wiklander

tee: correct max value for id allocation

2018-03-06T10:03:55+00:00

The privileged dev id range is [TEE_NUM_DEVICES / 2, TEE_NUM_DEVICES). The non-privileged dev id range is [0, TEE_NUM_DEVICES / 2). So when finding a slot for them, need to use different max value. Signed-off-by: Peng Fan Signed-off-by: Jens Wiklander