diff options
Diffstat (limited to 'drivers/tee/optee/optee_ffa.h')
| -rw-r--r-- | drivers/tee/optee/optee_ffa.h | 28 |
1 files changed, 24 insertions, 4 deletions
diff --git a/drivers/tee/optee/optee_ffa.h b/drivers/tee/optee/optee_ffa.h index 97266243deaa..5db779dc00de 100644 --- a/drivers/tee/optee/optee_ffa.h +++ b/drivers/tee/optee/optee_ffa.h @@ -1,6 +1,6 @@ /* SPDX-License-Identifier: BSD-2-Clause */ /* - * Copyright (c) 2019-2021, Linaro Limited + * Copyright (c) 2019-2021, 2023 Linaro Limited */ /* @@ -73,7 +73,7 @@ * * Call register usage: * w3: Service ID, OPTEE_FFA_EXCHANGE_CAPABILITIES - * w4-w7: Note used (MBZ) + * w4-w7: Not used (MBZ) * * Return register usage: * w3: Error code, 0 on success @@ -82,14 +82,16 @@ * OPTEE_FFA_YIELDING_CALL_WITH_ARG. * Bit[31:8]: Reserved (MBZ) * w5: Bitfield of secure world capabilities OPTEE_FFA_SEC_CAP_* below, - * unused bits MBZ. - * w6-w7: Not used (MBZ) + * w6: The maximum secure world notification number + * w7: Not used (MBZ) */ /* * Secure world supports giving an offset into the argument shared memory * object, see also OPTEE_FFA_YIELDING_CALL_WITH_ARG */ #define OPTEE_FFA_SEC_CAP_ARG_OFFSET BIT(0) +/* OP-TEE supports asynchronous notification via FF-A */ +#define OPTEE_FFA_SEC_CAP_ASYNC_NOTIF BIT(1) #define OPTEE_FFA_EXCHANGE_CAPABILITIES OPTEE_FFA_BLOCKING_CALL(2) @@ -109,6 +111,24 @@ #define OPTEE_FFA_UNREGISTER_SHM OPTEE_FFA_BLOCKING_CALL(3) /* + * Inform OP-TEE that the normal world is able to receive asynchronous + * notifications. + * + * Call register usage: + * w3: Service ID, OPTEE_FFA_ENABLE_ASYNC_NOTIF + * w4: Notification value to request bottom half processing, should be + * less than OPTEE_FFA_MAX_ASYNC_NOTIF_VALUE. + * w5-w7: Not used (MBZ) + * + * Return register usage: + * w3: Error code, 0 on success + * w4-w7: Note used (MBZ) + */ +#define OPTEE_FFA_ENABLE_ASYNC_NOTIF OPTEE_FFA_BLOCKING_CALL(5) + +#define OPTEE_FFA_MAX_ASYNC_NOTIF_VALUE 64 + +/* * Call with struct optee_msg_arg as argument in the supplied shared memory * with a zero internal offset and normal cached memory attributes. * Register usage: |