diff options
Diffstat (limited to 'include/device/serial.h')
| -rw-r--r-- | include/device/serial.h | 48 |
1 files changed, 48 insertions, 0 deletions
diff --git a/include/device/serial.h b/include/device/serial.h new file mode 100644 index 0000000..d59b00f --- /dev/null +++ b/include/device/serial.h @@ -0,0 +1,48 @@ +#ifndef _JOVE_DEVICE_SERIAL_H +#define _JOVE_DEVICE_SERIAL_H 1 + +#include <stdbool.h> +#include <stdint.h> +#include <stddef.h> +#include "klib/spinlock.h" + +#define SERIAL_UART_COM1 0x3F8 +#define SERIAL_UART_COM2 0x2F8 + +#define SERIAL_UART_COM_THR(COM) COM +#define SERIAL_UART_COM_RBR(COM) COM +#define SERIAL_UART_COM_DLAB_DLL(COM) COM +#define SERIAL_UART_COM_IER(COM) (COM + 1) +#define SERIAL_UART_COM_DLAB_DLH(COM) (COM + 1) +#define SERIAL_UART_COM_IIR(COM) (COM + 2) +#define SERIAL_UART_COM_FCR(COM) (COM + 2) +#define SERIAL_UART_COM_LCR(COM) (COM + 3) +#define SERIAL_UART_COM_MCR(COM) (COM + 4) +#define SERIAL_UART_COM_LSR(COM) (COM + 5) +#define SERIAL_UART_COM_MSR(COM) (COM + 6) +#define SERIAL_UART_COM_SR(COM) (COM + 7) + +typedef struct serial_device +{ + uint16_t com; + spinlock_t lock; +} serial_dev_t; + +extern serial_dev_t COM1; + +void serial_setup(void); +serial_dev_t serial_new(uint16_t com); + +void serial_set_int(serial_dev_t *dev, bool enable); +void serial_set_baud(serial_dev_t *dev, uint16_t baud); + +void serial_set_fcr(serial_dev_t *dev, uint16_t flg); +void serial_set_lcr(serial_dev_t *dev, uint16_t flg); +void serial_set_mcr(serial_dev_t *dev, uint16_t flg); +void serial_set_lsr(serial_dev_t *dev, uint16_t flg); +void serial_set_msr(serial_dev_t *dev, uint16_t flg); + +uint8_t serial_line_status(serial_dev_t *dev); +void serial_write(serial_dev_t *dev, const char *s, size_t len); + +#endif |