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 12 struct comedi_buf_map; 13 struct comedi_devconfig; 14 struct comedi_device; 15 struct comedi_insn; 16 struct comedi_rangeinfo; 17 struct comedi_subdevice; 18 struct device; 19 20 int do_rangeinfo_ioctl(struct comedi_device *dev, 21 struct comedi_rangeinfo *it); 22 struct comedi_device *comedi_alloc_board_minor(struct device *hardware_device); 23 void comedi_release_hardware_device(struct device *hardware_device); 24 int comedi_alloc_subdevice_minor(struct comedi_subdevice *s); 25 void comedi_free_subdevice_minor(struct comedi_subdevice *s); 26 27 int comedi_buf_alloc(struct comedi_device *dev, struct comedi_subdevice *s, 28 unsigned long new_size); 29 void comedi_buf_reset(struct comedi_subdevice *s); 30 bool comedi_buf_is_mmapped(struct comedi_subdevice *s); 31 void comedi_buf_map_get(struct comedi_buf_map *bm); 32 int comedi_buf_map_put(struct comedi_buf_map *bm); 33 int comedi_buf_map_access(struct comedi_buf_map *bm, unsigned long offset, 34 void *buf, int len, int write); 35 struct comedi_buf_map * 36 comedi_buf_map_from_subdev_get(struct comedi_subdevice *s); 37 unsigned int comedi_buf_write_n_available(struct comedi_subdevice *s); 38 unsigned int comedi_buf_write_n_allocated(struct comedi_subdevice *s); 39 unsigned int _comedi_buf_write_alloc(struct comedi_subdevice *s, 40 unsigned int nbytes); 41 unsigned int _comedi_buf_write_free(struct comedi_subdevice *s, 42 unsigned int nbytes); 43 unsigned int _comedi_buf_read_n_available(struct comedi_subdevice *s); 44 unsigned int _comedi_buf_read_alloc(struct comedi_subdevice *s, 45 unsigned int nbytes); 46 unsigned int _comedi_buf_read_free(struct comedi_subdevice *s, 47 unsigned int nbytes); 48 void _comedi_inc_scan_progress(struct comedi_subdevice *s, 49 unsigned int num_bytes); 50 void _comedi_event(struct comedi_device *dev, struct comedi_subdevice *s); 51 void comedi_device_cancel_all(struct comedi_device *dev); 52 bool comedi_can_auto_free_spriv(struct comedi_subdevice *s); 53 54 extern unsigned int comedi_default_buf_size_kb; 55 extern unsigned int comedi_default_buf_maxsize_kb; 56 57 /* drivers.c */ 58 59 extern struct comedi_driver *comedi_drivers; 60 extern struct mutex comedi_drivers_list_lock; 61 62 int insn_inval(struct comedi_device *dev, struct comedi_subdevice *s, 63 struct comedi_insn *insn, unsigned int *data); 64 65 void comedi_device_detach_locked(struct comedi_device *dev); 66 void comedi_device_detach(struct comedi_device *dev); 67 int comedi_device_attach(struct comedi_device *dev, 68 struct comedi_devconfig *it); 69 70 #ifdef CONFIG_PROC_FS 71 72 /* proc.c */ 73 74 void comedi_proc_init(void); 75 void comedi_proc_cleanup(void); 76 #else 77 static inline void comedi_proc_init(void) 78 { 79 } 80 81 static inline void comedi_proc_cleanup(void) 82 { 83 } 84 #endif 85 86 #endif /* _COMEDI_INTERNAL_H */ 87