diff options
| author | Amirreza Zarrabi <amirreza.zarrabi@oss.qualcomm.com> | 2025-09-11 21:07:44 -0700 |
|---|---|---|
| committer | Jens Wiklander <jens.wiklander@linaro.org> | 2025-09-15 17:34:06 +0200 |
| commit | 54a53e95a908a4cc770f0530c49f04c89e7b18dc (patch) | |
| tree | 4f6ae3b1bd50ab68a5d9d512a5e78dcd08f5d40a /include/uapi/linux | |
| parent | 0cbaf65c91db0e40a577e8919979dac1963cfcc0 (diff) | |
tee: add TEE_IOCTL_PARAM_ATTR_TYPE_UBUF
For drivers that can transfer data to the TEE without using shared
memory from client, it is necessary to receive the user address
directly, bypassing any processing by the TEE subsystem. Introduce
TEE_IOCTL_PARAM_ATTR_TYPE_UBUF_INPUT/OUTPUT/INOUT to represent
userspace buffers.
Reviewed-by: Sumit Garg <sumit.garg@oss.qualcomm.com>
Tested-by: Neil Armstrong <neil.armstrong@linaro.org>
Tested-by: Harshal Dev <quic_hdev@quicinc.com>
Signed-off-by: Amirreza Zarrabi <amirreza.zarrabi@oss.qualcomm.com>
Signed-off-by: Jens Wiklander <jens.wiklander@linaro.org>
Diffstat (limited to 'include/uapi/linux')
| -rw-r--r-- | include/uapi/linux/tee.h | 22 |
1 files changed, 16 insertions, 6 deletions
diff --git a/include/uapi/linux/tee.h b/include/uapi/linux/tee.h index d843cf980d98..0e3b735dcfca 100644 --- a/include/uapi/linux/tee.h +++ b/include/uapi/linux/tee.h @@ -152,6 +152,13 @@ struct tee_ioctl_buf_data { #define TEE_IOCTL_PARAM_ATTR_TYPE_MEMREF_INOUT 7 /* input and output */ /* + * These defines userspace buffer parameters. + */ +#define TEE_IOCTL_PARAM_ATTR_TYPE_UBUF_INPUT 8 +#define TEE_IOCTL_PARAM_ATTR_TYPE_UBUF_OUTPUT 9 +#define TEE_IOCTL_PARAM_ATTR_TYPE_UBUF_INOUT 10 /* input and output */ + +/* * Mask for the type part of the attribute, leaves room for more types */ #define TEE_IOCTL_PARAM_ATTR_TYPE_MASK 0xff @@ -186,14 +193,17 @@ struct tee_ioctl_buf_data { /** * struct tee_ioctl_param - parameter * @attr: attributes - * @a: if a memref, offset into the shared memory object, else a value parameter - * @b: if a memref, size of the buffer, else a value parameter + * @a: if a memref, offset into the shared memory object, + * else if a ubuf, address of the user buffer, + * else a value parameter + * @b: if a memref or ubuf, size of the buffer, else a value parameter * @c: if a memref, shared memory identifier, else a value parameter * - * @attr & TEE_PARAM_ATTR_TYPE_MASK indicates if memref or value is used in - * the union. TEE_PARAM_ATTR_TYPE_VALUE_* indicates value and - * TEE_PARAM_ATTR_TYPE_MEMREF_* indicates memref. TEE_PARAM_ATTR_TYPE_NONE - * indicates that none of the members are used. + * @attr & TEE_PARAM_ATTR_TYPE_MASK indicates if memref, ubuf, or value is + * used in the union. TEE_PARAM_ATTR_TYPE_VALUE_* indicates value, + * TEE_PARAM_ATTR_TYPE_MEMREF_* indicates memref, and TEE_PARAM_ATTR_TYPE_UBUF_* + * indicates ubuf. TEE_PARAM_ATTR_TYPE_NONE indicates that none of the members + * are used. * * Shared memory is allocated with TEE_IOC_SHM_ALLOC which returns an * identifier representing the shared memory object. A memref can reference |