/* SPDX-License-Identifier: GPL-2.0 */
#ifndef _COMEDI_INTERNAL_H
#define _COMEDI_INTERNAL_H

#include <linux/compiler.h>
#include <linux/types.h>

/*
 * various internal comedi stuff
 */

struct comedi_buf_map;
struct comedi_devconfig;
struct comedi_device;
struct comedi_insn;
struct comedi_rangeinfo;
struct comedi_subdevice;
struct device;

int do_rangeinfo_ioctl(struct comedi_device *dev,
		       struct comedi_rangeinfo *it);
struct comedi_device *comedi_alloc_board_minor(struct device *hardware_device);
void comedi_release_hardware_device(struct device *hardware_device);
int comedi_alloc_subdevice_minor(struct comedi_subdevice *s);
void comedi_free_subdevice_minor(struct comedi_subdevice *s);

int comedi_buf_alloc(struct comedi_device *dev, struct comedi_subdevice *s,
		     unsigned long new_size);
void comedi_buf_reset(struct comedi_subdevice *s);
bool comedi_buf_is_mmapped(struct comedi_subdevice *s);
void comedi_buf_map_get(struct comedi_buf_map *bm);
int comedi_buf_map_put(struct comedi_buf_map *bm);
int comedi_buf_map_access(struct comedi_buf_map *bm, unsigned long offset,
			  void *buf, int len, int write);
struct comedi_buf_map *
comedi_buf_map_from_subdev_get(struct comedi_subdevice *s);
unsigned int comedi_buf_write_n_available(struct comedi_subdevice *s);
unsigned int comedi_buf_write_n_allocated(struct comedi_subdevice *s);
unsigned int _comedi_buf_write_alloc(struct comedi_subdevice *s,
				     unsigned int nbytes);
unsigned int _comedi_buf_write_free(struct comedi_subdevice *s,
				    unsigned int nbytes);
unsigned int _comedi_buf_read_n_available(struct comedi_subdevice *s);
unsigned int _comedi_buf_read_alloc(struct comedi_subdevice *s,
				    unsigned int nbytes);
unsigned int _comedi_buf_read_free(struct comedi_subdevice *s,
				   unsigned int nbytes);
void _comedi_inc_scan_progress(struct comedi_subdevice *s,
			       unsigned int num_bytes);
void _comedi_event(struct comedi_device *dev, struct comedi_subdevice *s);
void comedi_device_cancel_all(struct comedi_device *dev);
bool comedi_can_auto_free_spriv(struct comedi_subdevice *s);

extern unsigned int comedi_default_buf_size_kb;
extern unsigned int comedi_default_buf_maxsize_kb;

/* drivers.c */

extern struct comedi_driver *comedi_drivers;
extern struct mutex comedi_drivers_list_lock;

int insn_inval(struct comedi_device *dev, struct comedi_subdevice *s,
	       struct comedi_insn *insn, unsigned int *data);

void comedi_device_detach_locked(struct comedi_device *dev);
void comedi_device_detach(struct comedi_device *dev);
int comedi_device_attach(struct comedi_device *dev,
			 struct comedi_devconfig *it);

#ifdef CONFIG_PROC_FS

/* proc.c */

void comedi_proc_init(void);
void comedi_proc_cleanup(void);
#else
static inline void comedi_proc_init(void)
{
}

static inline void comedi_proc_cleanup(void)
{
}
#endif

#endif /* _COMEDI_INTERNAL_H */