The HW supports only storing 15 keys at a time. This limits the number
of tfms that can work without failutes. Reserve keyslots to solve this
and use the reserved ones during the encryption/decryption operation.
This allow users to have the capability of hardware protected keys
and faster operations if there are limited number of tfms while not
halting the operation if there are more tfms.
Bug 4883011
Signed-off-by: Akhil R <akhilrajeev@nvidia.com>
Change-Id: I7de17eb1acf3b5a9f55a42e9df2aa8b64e20cb6d
Reviewed-on: https://git-master.nvidia.com/r/c/linux-nv-oot/+/3347661
GVS: buildbot_gerritrpt <buildbot_gerritrpt@nvidia.com>
Reviewed-by: Laxman Dewangan <ldewangan@nvidia.com>
The buffer which sends the commands to host1x was shared for all tasks
in the engine. This causes a problem with the setkey() function as it
gets called asynchronous to the crypto engine queue. Modifying the same
cmdbuf in setkey() will corrupt the ongoing host1x task and in turn
break the encryption/decryption operation. Hence use a separate cmdbuf
for setkey().
Bug 4883011
Signed-off-by: Akhil R <akhilrajeev@nvidia.com>
Change-Id: Ia6a5376e2c8dfc98e11414666ebf9ade41f10fee
Reviewed-on: https://git-master.nvidia.com/r/c/linux-nv-oot/+/3328437
Tested-by: mobile promotions <svcmobile_promotions@nvidia.com>
GVS: buildbot_gerritrpt <buildbot_gerritrpt@nvidia.com>
Reviewed-by: mobile promotions <svcmobile_promotions@nvidia.com>
Reviewed-by: Laxman Dewangan <ldewangan@nvidia.com>
Add the updated Tegra SE driver with the below improvements.
- Remove dependency with nvhost apis and use upstream Host1x APIs.
- Implement software fallbacks for keys/plaintexts unsupported by
hardware.
- Support only T234 and later. Prior chips will use tegra-se-nvhost
driver.
Bug 4221414
Bug 3579794
Signed-off-by: Akhil R <akhilrajeev@nvidia.com>
Change-Id: I398a5b7cc3f752b44d01d6d1c81f813f862e4cd9
Reviewed-on: https://git-master.nvidia.com/r/c/linux-nv-oot/+/2977810
Tested-by: mobile promotions <svcmobile_promotions@nvidia.com>
Reviewed-by: mobile promotions <svcmobile_promotions@nvidia.com>
