| 36,10 → 36,14 |
|---|
| |
| #define CHARDEV_BUFLEN 512 |
| |
| struct chardev; |
| |
| /* Character device operations interface. */ |
| struct chardev_operations { |
| void (* suspend)(void); /**< Suspend pushing characters. */ |
| void (* resume)(void); /**< Resume pushing characters. */ |
| void (* suspend)(struct chardev *);/**< Suspend pushing characters. */ |
| void (* resume)(struct chardev *); /**< Resume pushing characters. */ |
| /** Write character to stream */ |
| void (* write)(struct chardev *, char c); |
| }; |
| |
| typedef struct chardev_operations chardev_operations_t; |
| 46,15 → 50,20 |
|---|
| |
| /** Character input device. */ |
| struct chardev { |
| char *name; |
| |
| waitq_t wq; |
| spinlock_t lock; /**< Protects everything below. */ |
| __u8 buffer[CHARDEV_BUFLEN]; |
| count_t counter; |
| chardev_operations_t *op; /**< Implementation of chardev operations. */ |
| index_t index; |
| chardev_operations_t *op; /**< Implementation of chardev operations. */ |
| void *data; |
| }; |
| |
| extern void chardev_initialize(chardev_t *chardev, chardev_operations_t *op); |
| extern void chardev_initialize(char *name, |
| chardev_t *chardev, |
| chardev_operations_t *op); |
| void chardev_push_character(chardev_t *chardev, __u8 ch); |
| |
| #endif /* __CHARDEV_H__ */ |