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| author |   Volodymyr Babchuk <vlad.babchuk@gmail.com> | 2017-11-29 14:48:33 +0200 |
|---|---|---|
| committer |   Jens Wiklander <jens.wiklander@linaro.org> | 2017-12-15 13:35:37 +0100 |
| commit | 53a107c812de3dd74707458aa751eb457718ff9e (patch) | |
| tree | 82eadb0852fe73f3583854aba6e220d7a68f7298 /drivers/tee/optee/optee_private.h | |
| parent | tee: optee: add registered shared parameters handling (diff) | |
| download | linux-dev-53a107c812de3dd74707458aa751eb457718ff9e.tar.xz linux-dev-53a107c812de3dd74707458aa751eb457718ff9e.zip | |
tee: optee: add registered buffers handling into RPC calls
With latest changes to OP-TEE we can use any buffers as a shared memory.
Thus, it is possible for supplicant to provide part of own memory
when OP-TEE asks to allocate a shared buffer.
This patch adds support for such feature into RPC handling code.
Now when OP-TEE asks supplicant to allocate shared buffer, supplicant
can use TEE_IOC_SHM_REGISTER to provide such buffer. RPC handler is
aware of this, so it will pass list of allocated pages to OP-TEE.
Signed-off-by: Volodymyr Babchuk <vlad.babchuk@gmail.com>
[jw: fix parenthesis alignment in free_pages_list()]
Signed-off-by: Jens Wiklander <jens.wiklander@linaro.org>
Diffstat (limited to 'drivers/tee/optee/optee_private.h')
| -rw-r--r-- | drivers/tee/optee/optee_private.h | 15 |
1 files changed, 14 insertions, 1 deletions
diff --git a/drivers/tee/optee/optee_private.h b/drivers/tee/optee/optee_private.h index d7bc77d95022..61a0052f6a54 100644 --- a/drivers/tee/optee/optee_private.h +++ b/drivers/tee/optee/optee_private.h @@ -130,7 +130,16 @@ struct optee_rpc_param { u32 a7; }; -void optee_handle_rpc(struct tee_context *ctx, struct optee_rpc_param *param); +/* Holds context that is preserved during one STD call */ +struct optee_call_ctx { + /* information about pages list used in last allocation */ + void *pages_list; + size_t num_entries; +}; + +void optee_handle_rpc(struct tee_context *ctx, struct optee_rpc_param *param, + struct optee_call_ctx *call_ctx); +void optee_rpc_finalize_call(struct optee_call_ctx *call_ctx); void optee_wait_queue_init(struct optee_wait_queue *wq); void optee_wait_queue_exit(struct optee_wait_queue *wq); @@ -164,6 +173,10 @@ int optee_shm_register(struct tee_context *ctx, struct tee_shm *shm, struct page **pages, size_t num_pages); int optee_shm_unregister(struct tee_context *ctx, struct tee_shm *shm); +int optee_shm_register_supp(struct tee_context *ctx, struct tee_shm *shm, + struct page **pages, size_t num_pages); +int optee_shm_unregister_supp(struct tee_context *ctx, struct tee_shm *shm); + int optee_from_msg_param(struct tee_param *params, size_t num_params, const struct optee_msg_param *msg_params); int optee_to_msg_param(struct optee_msg_param *msg_params, size_t num_params, |