fd55b8055a
Currently, SMCInvoke does not support requests initiated by TZ to get data from Linux OS. Adding support so that TZ can call Linux OS. This includes support of memory objects which are owned by Linux OS. Change-Id: Ib97fe13954865a1ae908aa4da2e0439dbc26b38a Signed-off-by: Dinesh K Garg <dineshg@codeaurora.org>
92 lines
2.3 KiB
C
92 lines
2.3 KiB
C
#ifndef _UAPI_SMCINVOKE_H_
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#define _UAPI_SMCINVOKE_H_
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#include <linux/types.h>
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#include <linux/ioctl.h>
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#define SMCINVOKE_USERSPACE_OBJ_NULL -1
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struct smcinvoke_buf {
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uint64_t addr;
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uint64_t size;
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};
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struct smcinvoke_obj {
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int64_t fd;
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int32_t cb_server_fd;
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int32_t reserved;
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};
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union smcinvoke_arg {
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struct smcinvoke_buf b;
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struct smcinvoke_obj o;
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};
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/*
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* struct smcinvoke_cmd_req: This structure is transparently sent to TEE
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* @op - Operation to be performed
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* @counts - number of aruments passed
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* @result - result of invoke operation
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* @argsize - size of each of arguments
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* @args - args is pointer to buffer having all arguments
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*/
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struct smcinvoke_cmd_req {
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uint32_t op;
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uint32_t counts;
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int32_t result;
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uint32_t argsize;
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uint64_t args;
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};
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/*
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* struct smcinvoke_accept: structure to process CB req from TEE
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* @has_resp: IN: Whether IOCTL is carrying response data
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* @txn_id: OUT: An id that should be passed as it is for response
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* @result: IN: Outcome of operation op
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* @cbobj_id: OUT: Callback object which is target of operation op
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* @op: OUT: Operation to be performed on target object
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* @counts: OUT: Number of arguments, embedded in buffer pointed by
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* buf_addr, to complete operation
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* @reserved: IN/OUT: Usage is not defined but should be set to 0.
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* @argsize: IN: Size of any argument, all of equal size, embedded
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* in buffer pointed by buf_addr
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* @buf_len: IN: Len of buffer pointed by buf_addr
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* @buf_addr: IN: Buffer containing all arguments which are needed
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* to complete operation op
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*/
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struct smcinvoke_accept {
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uint32_t has_resp;
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uint32_t txn_id;
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int32_t result;
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int32_t cbobj_id;
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uint32_t op;
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uint32_t counts;
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int32_t reserved;
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uint32_t argsize;
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uint64_t buf_len;
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uint64_t buf_addr;
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};
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/*
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* @cb_buf_size: IN: Max buffer size for any callback obj implemented by client
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*/
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struct smcinvoke_server {
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uint32_t cb_buf_size;
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};
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#define SMCINVOKE_IOC_MAGIC 0x98
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#define SMCINVOKE_IOCTL_INVOKE_REQ \
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_IOWR(SMCINVOKE_IOC_MAGIC, 1, struct smcinvoke_cmd_req)
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#define SMCINVOKE_IOCTL_ACCEPT_REQ \
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_IOWR(SMCINVOKE_IOC_MAGIC, 2, struct smcinvoke_accept)
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#define SMCINVOKE_IOCTL_SERVER_REQ \
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_IOWR(SMCINVOKE_IOC_MAGIC, 3, struct smcinvoke_server)
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#define SMCINVOKE_IOCTL_ACK_LOCAL_OBJ \
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_IOWR(SMCINVOKE_IOC_MAGIC, 4, int32_t)
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#endif /* _UAPI_SMCINVOKE_H_ */
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