386 lines
12 KiB
C
386 lines
12 KiB
C
/*
|
|
* Copyright (c) 2015-2016, Linaro Limited
|
|
* All rights reserved.
|
|
*
|
|
* Redistribution and use in source and binary forms, with or without
|
|
* modification, are permitted provided that the following conditions are met:
|
|
*
|
|
* 1. Redistributions of source code must retain the above copyright notice,
|
|
* this list of conditions and the following disclaimer.
|
|
*
|
|
* 2. Redistributions in binary form must reproduce the above copyright notice,
|
|
* this list of conditions and the following disclaimer in the documentation
|
|
* and/or other materials provided with the distribution.
|
|
*
|
|
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
|
|
* AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
|
|
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
|
|
* ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE
|
|
* LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
|
|
* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
|
|
* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
|
|
* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
|
|
* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
|
|
* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
|
|
* POSSIBILITY OF SUCH DAMAGE.
|
|
*/
|
|
|
|
#ifndef __TEE_H
|
|
#define __TEE_H
|
|
|
|
#include <linux/ioctl.h>
|
|
#include <linux/types.h>
|
|
|
|
/*
|
|
* This file describes the API provided by a TEE driver to user space.
|
|
*
|
|
* Each TEE driver defines a TEE specific protocol which is used for the
|
|
* data passed back and forth using TEE_IOC_CMD.
|
|
*/
|
|
|
|
/* Helpers to make the ioctl defines */
|
|
#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 */
|
|
|
|
/*
|
|
* TEE Implementation ID
|
|
*/
|
|
#define TEE_IMPL_ID_OPTEE 1
|
|
#define TEE_IMPL_ID_AMDTEE 2
|
|
|
|
/*
|
|
* OP-TEE specific capabilities
|
|
*/
|
|
#define TEE_OPTEE_CAP_TZ (1 << 0)
|
|
|
|
/**
|
|
* struct tee_ioctl_version_data - TEE version
|
|
* @impl_id: [out] TEE implementation id
|
|
* @impl_caps: [out] Implementation specific capabilities
|
|
* @gen_caps: [out] Generic capabilities, defined by TEE_GEN_CAPS_* above
|
|
*
|
|
* Identifies the TEE implementation, @impl_id is one of TEE_IMPL_ID_* above.
|
|
* @impl_caps is implementation specific, for example TEE_OPTEE_CAP_*
|
|
* is valid when @impl_id == TEE_IMPL_ID_OPTEE.
|
|
*/
|
|
struct tee_ioctl_version_data {
|
|
__u32 impl_id;
|
|
__u32 impl_caps;
|
|
__u32 gen_caps;
|
|
};
|
|
|
|
/**
|
|
* TEE_IOC_VERSION - query version of TEE
|
|
*
|
|
* Takes a tee_ioctl_version_data struct and returns with the TEE version
|
|
* data filled in.
|
|
*/
|
|
#define TEE_IOC_VERSION _IOR(TEE_IOC_MAGIC, TEE_IOC_BASE + 0, \
|
|
struct tee_ioctl_version_data)
|
|
|
|
/**
|
|
* struct tee_ioctl_shm_alloc_data - Shared memory allocate argument
|
|
* @size: [in/out] Size of shared memory to allocate
|
|
* @flags: [in/out] Flags to/from allocation.
|
|
* @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_ALLOC below.
|
|
*/
|
|
struct tee_ioctl_shm_alloc_data {
|
|
__u64 size;
|
|
__u32 flags;
|
|
__s32 id;
|
|
};
|
|
|
|
/**
|
|
* TEE_IOC_SHM_ALLOC - allocate shared memory
|
|
*
|
|
* Allocates shared memory between the user space process and secure OS.
|
|
*
|
|
* Returns a file descriptor on success or < 0 on failure
|
|
*
|
|
* The returned file descriptor is used to map the shared memory into user
|
|
* space. The shared memory is freed when the descriptor is closed and the
|
|
* memory is unmapped.
|
|
*/
|
|
#define TEE_IOC_SHM_ALLOC _IOWR(TEE_IOC_MAGIC, TEE_IOC_BASE + 1, \
|
|
struct tee_ioctl_shm_alloc_data)
|
|
|
|
/**
|
|
* struct tee_ioctl_buf_data - Variable sized buffer
|
|
* @buf_ptr: [in] A __user pointer to a buffer
|
|
* @buf_len: [in] Length of the buffer above
|
|
*
|
|
* Used as argument for TEE_IOC_OPEN_SESSION, TEE_IOC_INVOKE,
|
|
* TEE_IOC_SUPPL_RECV, and TEE_IOC_SUPPL_SEND below.
|
|
*/
|
|
struct tee_ioctl_buf_data {
|
|
__u64 buf_ptr;
|
|
__u64 buf_len;
|
|
};
|
|
|
|
/*
|
|
* Attributes for struct tee_ioctl_param, selects field in the union
|
|
*/
|
|
#define TEE_IOCTL_PARAM_ATTR_TYPE_NONE 0 /* parameter not used */
|
|
|
|
/*
|
|
* These defines value parameters (struct tee_ioctl_param_value)
|
|
*/
|
|
#define TEE_IOCTL_PARAM_ATTR_TYPE_VALUE_INPUT 1
|
|
#define TEE_IOCTL_PARAM_ATTR_TYPE_VALUE_OUTPUT 2
|
|
#define TEE_IOCTL_PARAM_ATTR_TYPE_VALUE_INOUT 3 /* input and output */
|
|
|
|
/*
|
|
* These defines shared memory reference parameters (struct
|
|
* tee_ioctl_param_memref)
|
|
*/
|
|
#define TEE_IOCTL_PARAM_ATTR_TYPE_MEMREF_INPUT 5
|
|
#define TEE_IOCTL_PARAM_ATTR_TYPE_MEMREF_OUTPUT 6
|
|
#define TEE_IOCTL_PARAM_ATTR_TYPE_MEMREF_INOUT 7 /* input and output */
|
|
|
|
/*
|
|
* Mask for the type part of the attribute, leaves room for more types
|
|
*/
|
|
#define TEE_IOCTL_PARAM_ATTR_TYPE_MASK 0xff
|
|
|
|
/* Meta parameter carrying extra information about the message. */
|
|
#define TEE_IOCTL_PARAM_ATTR_META 0x100
|
|
|
|
/* Mask of all known attr bits */
|
|
#define TEE_IOCTL_PARAM_ATTR_MASK \
|
|
(TEE_IOCTL_PARAM_ATTR_TYPE_MASK | TEE_IOCTL_PARAM_ATTR_META)
|
|
|
|
/*
|
|
* Matches TEEC_LOGIN_* in GP TEE Client API
|
|
* Are only defined for GP compliant TEEs
|
|
*/
|
|
#define TEE_IOCTL_LOGIN_PUBLIC 0
|
|
#define TEE_IOCTL_LOGIN_USER 1
|
|
#define TEE_IOCTL_LOGIN_GROUP 2
|
|
#define TEE_IOCTL_LOGIN_APPLICATION 4
|
|
#define TEE_IOCTL_LOGIN_USER_APPLICATION 5
|
|
#define TEE_IOCTL_LOGIN_GROUP_APPLICATION 6
|
|
|
|
/**
|
|
* 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
|
|
* @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.
|
|
*
|
|
* Shared memory is allocated with TEE_IOC_SHM_ALLOC which returns an
|
|
* identifier representing the shared memory object. A memref can reference
|
|
* 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.
|
|
*/
|
|
struct tee_ioctl_param {
|
|
__u64 attr;
|
|
__u64 a;
|
|
__u64 b;
|
|
__u64 c;
|
|
};
|
|
|
|
#define TEE_IOCTL_UUID_LEN 16
|
|
|
|
/**
|
|
* struct tee_ioctl_open_session_arg - Open session argument
|
|
* @uuid: [in] UUID of the Trusted Application
|
|
* @clnt_uuid: [in] UUID of client
|
|
* @clnt_login: [in] Login class of client, TEE_IOCTL_LOGIN_* above
|
|
* @cancel_id: [in] Cancellation id, a unique value to identify this request
|
|
* @session: [out] Session id
|
|
* @ret: [out] return value
|
|
* @ret_origin [out] origin of the return value
|
|
* @num_params [in] number of parameters following this struct
|
|
*/
|
|
struct tee_ioctl_open_session_arg {
|
|
__u8 uuid[TEE_IOCTL_UUID_LEN];
|
|
__u8 clnt_uuid[TEE_IOCTL_UUID_LEN];
|
|
__u32 clnt_login;
|
|
__u32 cancel_id;
|
|
__u32 session;
|
|
__u32 ret;
|
|
__u32 ret_origin;
|
|
__u32 num_params;
|
|
/* num_params tells the actual number of element in params */
|
|
struct tee_ioctl_param params[];
|
|
};
|
|
|
|
/**
|
|
* TEE_IOC_OPEN_SESSION - opens a session to a Trusted Application
|
|
*
|
|
* Takes a struct tee_ioctl_buf_data which contains a struct
|
|
* tee_ioctl_open_session_arg followed by any array of struct
|
|
* tee_ioctl_param
|
|
*/
|
|
#define TEE_IOC_OPEN_SESSION _IOR(TEE_IOC_MAGIC, TEE_IOC_BASE + 2, \
|
|
struct tee_ioctl_buf_data)
|
|
|
|
/**
|
|
* struct tee_ioctl_invoke_func_arg - Invokes a function in a Trusted
|
|
* Application
|
|
* @func: [in] Trusted Application function, specific to the TA
|
|
* @session: [in] Session id
|
|
* @cancel_id: [in] Cancellation id, a unique value to identify this request
|
|
* @ret: [out] return value
|
|
* @ret_origin [out] origin of the return value
|
|
* @num_params [in] number of parameters following this struct
|
|
*/
|
|
struct tee_ioctl_invoke_arg {
|
|
__u32 func;
|
|
__u32 session;
|
|
__u32 cancel_id;
|
|
__u32 ret;
|
|
__u32 ret_origin;
|
|
__u32 num_params;
|
|
/* num_params tells the actual number of element in params */
|
|
struct tee_ioctl_param params[];
|
|
};
|
|
|
|
/**
|
|
* TEE_IOC_INVOKE - Invokes a function in a Trusted Application
|
|
*
|
|
* Takes a struct tee_ioctl_buf_data which contains a struct
|
|
* tee_invoke_func_arg followed by any array of struct tee_param
|
|
*/
|
|
#define TEE_IOC_INVOKE _IOR(TEE_IOC_MAGIC, TEE_IOC_BASE + 3, \
|
|
struct tee_ioctl_buf_data)
|
|
|
|
/**
|
|
* struct tee_ioctl_cancel_arg - Cancels an open session or invoke ioctl
|
|
* @cancel_id: [in] Cancellation id, a unique value to identify this request
|
|
* @session: [in] Session id, if the session is opened, else set to 0
|
|
*/
|
|
struct tee_ioctl_cancel_arg {
|
|
__u32 cancel_id;
|
|
__u32 session;
|
|
};
|
|
|
|
/**
|
|
* TEE_IOC_CANCEL - Cancels an open session or invoke
|
|
*/
|
|
#define TEE_IOC_CANCEL _IOR(TEE_IOC_MAGIC, TEE_IOC_BASE + 4, \
|
|
struct tee_ioctl_cancel_arg)
|
|
|
|
/**
|
|
* struct tee_ioctl_close_session_arg - Closes an open session
|
|
* @session: [in] Session id
|
|
*/
|
|
struct tee_ioctl_close_session_arg {
|
|
__u32 session;
|
|
};
|
|
|
|
/**
|
|
* TEE_IOC_CLOSE_SESSION - Closes a session
|
|
*/
|
|
#define TEE_IOC_CLOSE_SESSION _IOR(TEE_IOC_MAGIC, TEE_IOC_BASE + 5, \
|
|
struct tee_ioctl_close_session_arg)
|
|
|
|
/**
|
|
* struct tee_iocl_supp_recv_arg - Receive a request for a supplicant function
|
|
* @func: [in] supplicant function
|
|
* @num_params [in/out] number of parameters following this struct
|
|
*
|
|
* @num_params is the number of params that tee-supplicant has room to
|
|
* receive when input, @num_params is the number of actual params
|
|
* tee-supplicant receives when output.
|
|
*/
|
|
struct tee_iocl_supp_recv_arg {
|
|
__u32 func;
|
|
__u32 num_params;
|
|
/* num_params tells the actual number of element in params */
|
|
struct tee_ioctl_param params[];
|
|
};
|
|
|
|
/**
|
|
* TEE_IOC_SUPPL_RECV - Receive a request for a supplicant function
|
|
*
|
|
* Takes a struct tee_ioctl_buf_data which contains a struct
|
|
* tee_iocl_supp_recv_arg followed by any array of struct tee_param
|
|
*/
|
|
#define TEE_IOC_SUPPL_RECV _IOR(TEE_IOC_MAGIC, TEE_IOC_BASE + 6, \
|
|
struct tee_ioctl_buf_data)
|
|
|
|
/**
|
|
* struct tee_iocl_supp_send_arg - Send a response to a received request
|
|
* @ret: [out] return value
|
|
* @num_params [in] number of parameters following this struct
|
|
*/
|
|
struct tee_iocl_supp_send_arg {
|
|
__u32 ret;
|
|
__u32 num_params;
|
|
/* num_params tells the actual number of element in params */
|
|
struct tee_ioctl_param params[];
|
|
};
|
|
|
|
/**
|
|
* TEE_IOC_SUPPL_SEND - Receive a request for a supplicant function
|
|
*
|
|
* Takes a struct tee_ioctl_buf_data which contains a struct
|
|
* tee_iocl_supp_send_arg followed by any array of struct tee_param
|
|
*/
|
|
#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
|
|
* ioctl(): as described above operating on the file descriptor from open()
|
|
* close(): two cases
|
|
* - closes the device file descriptor
|
|
* - closes a file descriptor connected to allocated shared memory
|
|
* mmap(): maps shared memory into user space using information from struct
|
|
* tee_ioctl_shm_alloc_data
|
|
* munmap(): unmaps previously shared memory
|
|
*/
|
|
|
|
#endif /*__TEE_H*/
|