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/*
* drivers/misc/tegra-profiler/comm.h
*
* Copyright (c) 2013, NVIDIA CORPORATION. All rights reserved.
*
* This program is free software; you can redistribute it and/or modify it
* under the terms and conditions of the GNU General Public License,
* version 2, as published by the Free Software Foundation.
*
* This program is distributed in the hope it will be useful, but WITHOUT
* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
* more details.
*
*/
#ifndef __QUADD_COMM_H__
#define __QUADD_COMM_H__
#include <linux/types.h>
struct quadd_record_data;
struct quadd_comm_cap;
struct quadd_module_state;
struct miscdevice;
struct quadd_ring_buffer {
char *buf;
spinlock_t lock;
size_t size;
size_t pos_read;
size_t pos_write;
size_t fill_count;
size_t max_fill_count;
};
struct quadd_parameters;
struct quadd_comm_control_interface {
int (*start)(void);
void (*stop)(void);
int (*set_parameters)(struct quadd_parameters *param,
uid_t *debug_app_uid);
void (*get_capabilities)(struct quadd_comm_cap *cap);
void (*get_state)(struct quadd_module_state *state);
};
struct quadd_comm_data_interface {
void (*put_sample)(struct quadd_record_data *data, char *extra_data,
unsigned int extra_length);
void (*reset)(void);
};
struct quadd_comm_ctx {
struct quadd_comm_control_interface *control;
struct quadd_ring_buffer rb;
size_t rb_size;
atomic_t active;
struct mutex io_mutex;
int nr_users;
int params_ok;
pid_t process_pid;
uid_t debug_app_uid;
wait_queue_head_t read_wait;
struct miscdevice *misc_dev;
};
struct quadd_comm_data_interface *
quadd_comm_events_init(struct quadd_comm_control_interface *control);
void quadd_comm_events_exit(void);
#endif /* __QUADD_COMM_H__ */
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