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| author | Jens Wiklander | 2017-11-29 13:48:26 +0100 |
|---|---|---|
| committer | Jens Wiklander | 2017-12-15 13:32:20 +0100 |
| commit | 033ddf12bcf5326b93bd604f50a7474a434a35f9 (patch) | |
| tree | 522e379496852ccd5db9569296192213f3bed0fd /include/uapi/linux/tee.h | |
| parent | tee: flexible shared memory pool creation (diff) | |
| download | kernel-qcow2-linux-033ddf12bcf5326b93bd604f50a7474a434a35f9.tar.gz kernel-qcow2-linux-033ddf12bcf5326b93bd604f50a7474a434a35f9.tar.xz kernel-qcow2-linux-033ddf12bcf5326b93bd604f50a7474a434a35f9.zip | |
tee: add register user memory
Added new ioctl to allow users register own buffers as a shared memory.
Signed-off-by: Volodymyr Babchuk <vlad.babchuk@gmail.com>
[jw: moved tee_shm_is_registered() declaration]
[jw: added space after __tee_shm_alloc() implementation]
Signed-off-by: Jens Wiklander <jens.wiklander@linaro.org>
Diffstat (limited to 'include/uapi/linux/tee.h')
| -rw-r--r-- | include/uapi/linux/tee.h | 30 |
1 files changed, 30 insertions, 0 deletions
diff --git a/include/uapi/linux/tee.h b/include/uapi/linux/tee.h index 688782e90140..d41a07afe3fc 100644 --- a/include/uapi/linux/tee.h +++ b/include/uapi/linux/tee.h @@ -50,6 +50,7 @@ #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 */ /* * TEE Implementation ID @@ -332,6 +333,35 @@ struct tee_iocl_supp_send_arg { #define TEE_IOC_SUPPL_SEND _IOR(TEE_IOC_MAGIC, TEE_IOC_BASE + 7, \ struct tee_ioctl_buf_data) +/** + * struct tee_ioctl_shm_register_data - Shared memory register argument + * @addr: [in] Start address of shared memory to register + * @length: [in/out] Length of shared memory to register + * @flags: [in/out] Flags to/from registration. + * @id: [out] Identifier of the shared memory + * + * The flags field should currently be zero as input. Updated by the call + * with actual flags as defined by TEE_IOCTL_SHM_* above. + * This structure is used as argument for TEE_IOC_SHM_REGISTER below. + */ +struct tee_ioctl_shm_register_data { + __u64 addr; + __u64 length; + __u32 flags; + __s32 id; +}; + +/** + * TEE_IOC_SHM_REGISTER - Register shared memory argument + * + * Registers shared memory between the user space process and secure OS. + * + * Returns a file descriptor on success or < 0 on failure + * + * The shared memory is unregisterred when the descriptor is closed. + */ +#define TEE_IOC_SHM_REGISTER _IOWR(TEE_IOC_MAGIC, TEE_IOC_BASE + 9, \ + struct tee_ioctl_shm_register_data) /* * Five syscalls are used when communicating with the TEE driver. * open(): opens the device associated with the driver |