| 35,7 → 35,6 |
|---|
| #ifndef KERN_CHARDEV_H_ |
| #define KERN_CHARDEV_H_ |
| |
| #include <typedefs.h> |
| #include <arch/types.h> |
| #include <synch/waitq.h> |
| #include <synch/spinlock.h> |
| 42,19 → 41,19 |
|---|
| |
| #define CHARDEV_BUFLEN 512 |
| |
| struct chardev; |
| |
| /* Character device operations interface. */ |
| struct chardev_operations { |
| void (* suspend)(chardev_t *); /**< Suspend pushing characters. */ |
| void (* resume)(chardev_t *); /**< Resume pushing characters. */ |
| void (* write)(chardev_t *, char c); /**< Write character to stream. */ |
| typedef struct { |
| void (* suspend)(struct chardev *); /**< Suspend pushing characters. */ |
| void (* resume)(struct chardev *); /**< Resume pushing characters. */ |
| void (* write)(struct chardev *, char c); /**< Write character to stream. */ |
| /** Read character directly from device, assume interrupts disabled */ |
| char (* read)(chardev_t *); |
| }; |
| char (* read)(struct chardev *); |
| } chardev_operations_t; |
| |
| typedef struct chardev_operations chardev_operations_t; |
| |
| /** Character input device. */ |
| struct chardev { |
| typedef struct chardev { |
| char *name; |
| |
| waitq_t wq; |
| 64,7 → 63,7 |
|---|
| chardev_operations_t *op; /**< Implementation of chardev operations. */ |
| index_t index; |
| void *data; |
| }; |
| } chardev_t; |
| |
| extern void chardev_initialize(char *name, |
| chardev_t *chardev, |