1177b17bdb
This change makes changes to smcinvoke driver to handle suspend and resume scenarios. If the accept thread gets interrupted, do not set the server state as defunct if the thread is in freezing state, i.e. if the thread is going in suspend. In such cases, increase timeout of that server so that invoke thread waits indefinitely for response from userspace until the system resumes back. Tests: 1. Stability testing has been done on kalama. 2. smcinvoke vendor client testing is done on pineapple. Change-Id: Iaa7b91d6ed484305349c04468263919e26a3316d Signed-off-by: Anmolpreet Kaur <quic_anmolpre@quicinc.com>
106 lines
2.8 KiB
C
106 lines
2.8 KiB
C
/* SPDX-License-Identifier: GPL-2.0-only WITH Linux-syscall-note */
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/*
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* Copyright (c) 2017-2020, The Linux Foundation. All rights reserved.
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* Copyright (c) 2023 Qualcomm Innovation Center, Inc. All rights reserved.
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*/
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#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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#define DEFAULT_CB_OBJ_THREAD_CNT 4
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struct smcinvoke_buf {
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__u64 addr;
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__u64 size;
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};
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struct smcinvoke_obj {
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__s64 fd;
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__s32 cb_server_fd;
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__s32 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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__u32 op;
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__u32 counts;
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__s32 result;
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__u32 argsize;
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__u64 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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__u32 has_resp;
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__u32 txn_id;
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__s32 result;
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__s32 cbobj_id;
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__u32 op;
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__u32 counts;
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__s32 reserved;
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__u32 argsize;
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__u64 buf_len;
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__u64 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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__u32 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, __s32)
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/*
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* smcinvoke logging buffer is for communicating with the smcinvoke driver additional
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* info for debugging to be included in driver's log (if any)
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*/
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#define SMCINVOKE_LOG_BUF_SIZE 100
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#define SMCINVOKE_IOCTL_LOG \
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_IOC(_IOC_READ|_IOC_WRITE, SMCINVOKE_IOC_MAGIC, 255, SMCINVOKE_LOG_BUF_SIZE)
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#endif /* _UAPI_SMCINVOKE_H_ */
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