linux/drivers/staging/vc04_services/interface/vchiq_arm/vchiq_arm.h

/* SPDX-License-Identifier: GPL-2.0 OR BSD-3-Clause */
/*
 * Copyright (c) 2014 Raspberry Pi (Trading) Ltd. All rights reserved.
 * Copyright (c) 2010-2012 Broadcom. All rights reserved.
 */

#ifndef VCHIQ_ARM_H
#define VCHIQ_ARM_H

#include <linux/mutex.h>
#include <linux/platform_device.h>
#include <linux/semaphore.h>
#include <linux/atomic.h>
#include "vchiq_core.h"
#include "vchiq_debugfs.h"

/* Some per-instance constants */
#define MAX_COMPLETIONS …
#define MAX_SERVICES …
#define MAX_ELEMENTS …
#define MSG_QUEUE_SIZE …

#define VCHIQ_DRV_MAX_CALLBACKS …

struct rpi_firmware;
struct vchiq_device;

enum USE_TYPE_E { … };

struct vchiq_platform_info { … };

struct vchiq_drv_mgmt { … };

struct user_service { … };

struct bulk_waiter_node { … };

struct vchiq_instance { … };

int
vchiq_use_service(struct vchiq_instance *instance, unsigned int handle);

extern int
vchiq_release_service(struct vchiq_instance *instance, unsigned int handle);

extern int
vchiq_check_service(struct vchiq_service *service);

extern void
vchiq_dump_service_use_state(struct vchiq_state *state);

extern int
vchiq_use_internal(struct vchiq_state *state, struct vchiq_service *service,
		   enum USE_TYPE_E use_type);
extern int
vchiq_release_internal(struct vchiq_state *state,
		       struct vchiq_service *service);

extern struct vchiq_debugfs_node *
vchiq_instance_get_debugfs_node(struct vchiq_instance *instance);

extern int
vchiq_instance_get_use_count(struct vchiq_instance *instance);

extern int
vchiq_instance_get_pid(struct vchiq_instance *instance);

extern int
vchiq_instance_get_trace(struct vchiq_instance *instance);

extern void
vchiq_instance_set_trace(struct vchiq_instance *instance, int trace);

extern void
vchiq_add_connected_callback(struct vchiq_device *device,
			     void (*callback)(void));

#if IS_ENABLED(CONFIG_VCHIQ_CDEV)

extern void
vchiq_deregister_chrdev(void);

extern int
vchiq_register_chrdev(struct device *parent);

#else

static inline void vchiq_deregister_chrdev(void) { }
static inline int vchiq_register_chrdev(struct device *parent) { return 0; }

#endif /* IS_ENABLED(CONFIG_VCHIQ_CDEV) */

extern int
service_callback(struct vchiq_instance *vchiq_instance, enum vchiq_reason reason,
		 struct vchiq_header *header, unsigned int handle, void *bulk_userdata);

extern void
free_bulk_waiter(struct vchiq_instance *instance);

#endif /* VCHIQ_ARM_H */