Linux kernel mirror (for testing)
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linux
1/* SPDX-License-Identifier: GPL-2.0 */
2#ifndef _COMEDI_INTERNAL_H
3#define _COMEDI_INTERNAL_H
4
5#include <linux/compiler.h>
6#include <linux/types.h>
7
8/*
9 * various internal comedi stuff
10 */
11
12struct comedi_buf_map;
13struct comedi_devconfig;
14struct comedi_device;
15struct comedi_insn;
16struct comedi_rangeinfo;
17struct comedi_subdevice;
18struct device;
19
20int do_rangeinfo_ioctl(struct comedi_device *dev,
21 struct comedi_rangeinfo *it);
22struct comedi_device *comedi_alloc_board_minor(struct device *hardware_device);
23void comedi_release_hardware_device(struct device *hardware_device);
24int comedi_alloc_subdevice_minor(struct comedi_subdevice *s);
25void comedi_free_subdevice_minor(struct comedi_subdevice *s);
26
27int comedi_buf_alloc(struct comedi_device *dev, struct comedi_subdevice *s,
28 unsigned long new_size);
29void comedi_buf_reset(struct comedi_subdevice *s);
30bool comedi_buf_is_mmapped(struct comedi_subdevice *s);
31void comedi_buf_map_get(struct comedi_buf_map *bm);
32int comedi_buf_map_put(struct comedi_buf_map *bm);
33int comedi_buf_map_access(struct comedi_buf_map *bm, unsigned long offset,
34 void *buf, int len, int write);
35struct comedi_buf_map *
36comedi_buf_map_from_subdev_get(struct comedi_subdevice *s);
37unsigned int comedi_buf_write_n_available(struct comedi_subdevice *s);
38unsigned int comedi_buf_write_n_allocated(struct comedi_subdevice *s);
39unsigned int _comedi_buf_write_alloc(struct comedi_subdevice *s,
40 unsigned int nbytes);
41unsigned int _comedi_buf_write_free(struct comedi_subdevice *s,
42 unsigned int nbytes);
43unsigned int _comedi_buf_read_n_available(struct comedi_subdevice *s);
44unsigned int _comedi_buf_read_alloc(struct comedi_subdevice *s,
45 unsigned int nbytes);
46unsigned int _comedi_buf_read_free(struct comedi_subdevice *s,
47 unsigned int nbytes);
48void _comedi_inc_scan_progress(struct comedi_subdevice *s,
49 unsigned int num_bytes);
50void _comedi_event(struct comedi_device *dev, struct comedi_subdevice *s);
51void comedi_device_cancel_all(struct comedi_device *dev);
52bool comedi_can_auto_free_spriv(struct comedi_subdevice *s);
53
54extern unsigned int comedi_default_buf_size_kb;
55extern unsigned int comedi_default_buf_maxsize_kb;
56
57/* drivers.c */
58
59extern struct comedi_driver *comedi_drivers;
60extern struct mutex comedi_drivers_list_lock;
61
62int insn_inval(struct comedi_device *dev, struct comedi_subdevice *s,
63 struct comedi_insn *insn, unsigned int *data);
64
65void comedi_device_detach_locked(struct comedi_device *dev);
66void comedi_device_detach(struct comedi_device *dev);
67int comedi_device_attach(struct comedi_device *dev,
68 struct comedi_devconfig *it);
69
70#ifdef CONFIG_PROC_FS
71
72/* proc.c */
73
74void comedi_proc_init(void);
75void comedi_proc_cleanup(void);
76#else
77static inline void comedi_proc_init(void)
78{
79}
80
81static inline void comedi_proc_cleanup(void)
82{
83}
84#endif
85
86#endif /* _COMEDI_INTERNAL_H */