|  | /* SPDX-License-Identifier: GPL-2.0 */ | 
|  | /* | 
|  | * Copyright (C) 2021 ARM Ltd. | 
|  | */ | 
|  |  | 
|  | #ifndef _FFA_COMMON_H | 
|  | #define _FFA_COMMON_H | 
|  |  | 
|  | #include <linux/arm_ffa.h> | 
|  | #include <linux/arm-smccc.h> | 
|  | #include <linux/err.h> | 
|  |  | 
|  | typedef struct arm_smccc_1_2_regs ffa_value_t; | 
|  |  | 
|  | typedef void (ffa_fn)(ffa_value_t, ffa_value_t *); | 
|  |  | 
|  | int arm_ffa_bus_init(void); | 
|  | void arm_ffa_bus_exit(void); | 
|  | bool ffa_device_is_valid(struct ffa_device *ffa_dev); | 
|  | void ffa_device_match_uuid(struct ffa_device *ffa_dev, const uuid_t *uuid); | 
|  |  | 
|  | #ifdef CONFIG_ARM_FFA_SMCCC | 
|  | int __init ffa_transport_init(ffa_fn **invoke_ffa_fn); | 
|  | #else | 
|  | static inline int __init ffa_transport_init(ffa_fn **invoke_ffa_fn) | 
|  | { | 
|  | return -EOPNOTSUPP; | 
|  | } | 
|  | #endif | 
|  |  | 
|  | #endif /* _FFA_COMMON_H */ |