linux/drivers/firmware/arm_ffa/common.h
Sudeep Holla d0c0bce831 firmware: arm_ffa: Setup in-kernel users of FFA partitions
Parse the FFA nodes from the device-tree and register all the partitions
whose services will be used in the kernel.

In order to also enable in-kernel users of FFA interface, let us add
simple set of operations for such devices.

The in-kernel users are registered without the character device interface.

Link: https://lore.kernel.org/r/20210521151033.181846-5-sudeep.holla@arm.com
Tested-by: Jens Wiklander <jens.wiklander@linaro.org>
Reviewed-by: Jens Wiklander <jens.wiklander@linaro.org>
Signed-off-by: Sudeep Holla <sudeep.holla@arm.com>
2021-05-26 22:38:43 +01:00

32 lines
708 B
C

/* 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 */