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| author | Arnd Bergmann <arnd@arndb.de> | 2023-12-22 10:42:19 +0000 |
|---|---|---|
| committer | Arnd Bergmann <arnd@arndb.de> | 2023-12-22 10:42:19 +0000 |
| commit | 9d0e3c5a3d89bbd77c671a84301c38e0a71bfa14 (patch) | |
| tree | 73109355b77f7737c971b1972dc25bbfed678645 /include/linux | |
| parent | 60cc77704eb23558c46a4428792515e48273dde0 (diff) | |
| parent | 4b391c9c37646f25118355f414b9e6d9fefe782f (diff) | |
| download | linux-stable-9d0e3c5a3d89bbd77c671a84301c38e0a71bfa14.tar.gz linux-stable-9d0e3c5a3d89bbd77c671a84301c38e0a71bfa14.tar.bz2 linux-stable-9d0e3c5a3d89bbd77c671a84301c38e0a71bfa14.zip | |
Merge tag 'system-thread-for-v6.8' of https://git.linaro.org/people/jens.wiklander/linux-tee into soc/drivers
OP-TEE add reserved system thread
Add support for a reserved system thread in the SMC-ABI of the OP-TEE driver.
SCMI with OP-TEE transport uses this to guarantee that it will always have
a thread available in the secure world.
* tag 'system-thread-for-v6.8' of https://git.linaro.org/people/jens.wiklander/linux-tee:
firmware: arm_scmi: optee: use optee system invocation
tee: optee: support tracking system threads
tee: system session
tee: optee: system thread call property
Link: https://lore.kernel.org/r/20231211102600.GA571787@rayden
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Diffstat (limited to 'include/linux')
| -rw-r--r-- | include/linux/tee_drv.h | 16 |
1 files changed, 16 insertions, 0 deletions
diff --git a/include/linux/tee_drv.h b/include/linux/tee_drv.h index 17eb1c5205d3..911ddf92dcee 100644 --- a/include/linux/tee_drv.h +++ b/include/linux/tee_drv.h @@ -84,6 +84,7 @@ struct tee_param { * @release: release this open file * @open_session: open a new session * @close_session: close a session + * @system_session: declare session as a system session * @invoke_func: invoke a trusted function * @cancel_req: request cancel of an ongoing invoke or open * @supp_recv: called for supplicant to get a command @@ -100,6 +101,7 @@ struct tee_driver_ops { struct tee_ioctl_open_session_arg *arg, struct tee_param *param); int (*close_session)(struct tee_context *ctx, u32 session); + int (*system_session)(struct tee_context *ctx, u32 session); int (*invoke_func)(struct tee_context *ctx, struct tee_ioctl_invoke_arg *arg, struct tee_param *param); @@ -430,6 +432,20 @@ int tee_client_open_session(struct tee_context *ctx, int tee_client_close_session(struct tee_context *ctx, u32 session); /** + * tee_client_system_session() - Declare session as a system session + * @ctx: TEE Context + * @session: Session id + * + * This function requests TEE to provision an entry context ready to use for + * that session only. The provisioned entry context is used for command + * invocation and session closure, not for command cancelling requests. + * TEE releases the provisioned context upon session closure. + * + * Return < 0 on error else 0 if an entry context has been provisioned. + */ +int tee_client_system_session(struct tee_context *ctx, u32 session); + +/** * tee_client_invoke_func() - Invoke a function in a Trusted Application * @ctx: TEE Context * @arg: Invoke arguments, see description of |