diff options
Diffstat (limited to 'include/uapi/linux/tee.h')
| -rw-r--r-- | include/uapi/linux/tee.h | 20 |
1 files changed, 15 insertions, 5 deletions
diff --git a/include/uapi/linux/tee.h b/include/uapi/linux/tee.h index b619f37ee03e..d0430bee8292 100644 --- a/include/uapi/linux/tee.h +++ b/include/uapi/linux/tee.h @@ -42,21 +42,21 @@ #define TEE_IOC_MAGIC 0xa4 #define TEE_IOC_BASE 0 -/* Flags relating to shared memory */ -#define TEE_IOCTL_SHM_MAPPED 0x1 /* memory mapped in normal world */ -#define TEE_IOCTL_SHM_DMA_BUF 0x2 /* dma-buf handle on shared memory */ - #define TEE_MAX_ARG_SIZE 1024 #define TEE_GEN_CAP_GP (1 << 0)/* GlobalPlatform compliant TEE */ #define TEE_GEN_CAP_PRIVILEGED (1 << 1)/* Privileged device (for supplicant) */ #define TEE_GEN_CAP_REG_MEM (1 << 2)/* Supports registering shared memory */ +#define TEE_GEN_CAP_MEMREF_NULL (1 << 3)/* NULL MemRef support */ + +#define TEE_MEMREF_NULL (__u64)(-1) /* NULL MemRef Buffer */ /* * TEE Implementation ID */ #define TEE_IMPL_ID_OPTEE 1 #define TEE_IMPL_ID_AMDTEE 2 +#define TEE_IMPL_ID_TSTEE 3 /* * OP-TEE specific capabilities @@ -200,6 +200,16 @@ struct tee_ioctl_buf_data { * a part of a shared memory by specifying an offset (@a) and size (@b) of * the object. To supply the entire shared memory object set the offset * (@a) to 0 and size (@b) to the previously returned size of the object. + * + * A client may need to present a NULL pointer in the argument + * passed to a trusted application in the TEE. + * This is also a requirement in GlobalPlatform Client API v1.0c + * (section 3.2.5 memory references), which can be found at + * http://www.globalplatform.org/specificationsdevice.asp + * + * If a NULL pointer is passed to a TA in the TEE, the (@c) + * IOCTL parameters value must be set to TEE_MEMREF_NULL indicating a NULL + * memory reference. */ struct tee_ioctl_param { __u64 attr; @@ -342,7 +352,7 @@ struct tee_iocl_supp_send_arg { }; /** - * TEE_IOC_SUPPL_SEND - Receive a request for a supplicant function + * TEE_IOC_SUPPL_SEND - Send a response to a received request * * Takes a struct tee_ioctl_buf_data which contains a struct * tee_iocl_supp_send_arg followed by any array of struct tee_param |