serial.h

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#ifndef _RTDM_UAPI_SERIAL_H
#define _RTDM_UAPI_SERIAL_H

#define RTSER_PROFILE_VER               3

#define RTSER_DEF_BAUD                  9600

#define RTSER_NO_PARITY                 0x00
#define RTSER_ODD_PARITY                0x01
#define RTSER_EVEN_PARITY               0x03
#define RTSER_DEF_PARITY                RTSER_NO_PARITY

#define RTSER_5_BITS                    0x00
#define RTSER_6_BITS                    0x01
#define RTSER_7_BITS                    0x02
#define RTSER_8_BITS                    0x03
#define RTSER_DEF_BITS                  RTSER_8_BITS

#define RTSER_1_STOPB                   0x00

#define RTSER_1_5_STOPB                 0x01
#define RTSER_2_STOPB                   0x01
#define RTSER_DEF_STOPB                 RTSER_1_STOPB

#define RTSER_NO_HAND                   0x00
#define RTSER_RTSCTS_HAND               0x01
#define RTSER_DEF_HAND                  RTSER_NO_HAND

#define RTSER_RS485_DISABLE             0x00
#define RTSER_RS485_ENABLE              0x01
#define RTSER_DEF_RS485                 RTSER_RS485_DISABLE

#define RTSER_FIFO_DEPTH_1              0x00
#define RTSER_FIFO_DEPTH_4              0x40
#define RTSER_FIFO_DEPTH_8              0x80
#define RTSER_FIFO_DEPTH_14             0xC0
#define RTSER_DEF_FIFO_DEPTH            RTSER_FIFO_DEPTH_1

#define RTSER_TIMEOUT_INFINITE          RTDM_TIMEOUT_INFINITE
#define RTSER_TIMEOUT_NONE              RTDM_TIMEOUT_NONE
#define RTSER_DEF_TIMEOUT               RTDM_TIMEOUT_INFINITE

#define RTSER_RX_TIMESTAMP_HISTORY      0x01
#define RTSER_DEF_TIMESTAMP_HISTORY     0x00

#define RTSER_EVENT_RXPEND              0x01
#define RTSER_EVENT_ERRPEND             0x02
#define RTSER_EVENT_MODEMHI             0x04
#define RTSER_EVENT_MODEMLO             0x08
#define RTSER_EVENT_TXEMPTY             0x10
#define RTSER_DEF_EVENT_MASK            0x00

#define RTSER_SET_BAUD                  0x0001
#define RTSER_SET_PARITY                0x0002
#define RTSER_SET_DATA_BITS             0x0004
#define RTSER_SET_STOP_BITS             0x0008
#define RTSER_SET_HANDSHAKE             0x0010
#define RTSER_SET_FIFO_DEPTH            0x0020
#define RTSER_SET_TIMEOUT_RX            0x0100
#define RTSER_SET_TIMEOUT_TX            0x0200
#define RTSER_SET_TIMEOUT_EVENT         0x0400
#define RTSER_SET_TIMESTAMP_HISTORY     0x0800
#define RTSER_SET_EVENT_MASK            0x1000
#define RTSER_SET_RS485                 0x2000

#define RTSER_LSR_DATA                  0x01
#define RTSER_LSR_OVERRUN_ERR           0x02
#define RTSER_LSR_PARITY_ERR            0x04
#define RTSER_LSR_FRAMING_ERR           0x08
#define RTSER_LSR_BREAK_IND             0x10
#define RTSER_LSR_THR_EMTPY             0x20
#define RTSER_LSR_TRANSM_EMPTY          0x40
#define RTSER_LSR_FIFO_ERR              0x80
#define RTSER_SOFT_OVERRUN_ERR          0x0100

#define RTSER_MSR_DCTS                  0x01
#define RTSER_MSR_DDSR                  0x02
#define RTSER_MSR_TERI                  0x04
#define RTSER_MSR_DDCD                  0x08
#define RTSER_MSR_CTS                   0x10
#define RTSER_MSR_DSR                   0x20
#define RTSER_MSR_RI                    0x40
#define RTSER_MSR_DCD                   0x80

#define RTSER_MCR_DTR                   0x01
#define RTSER_MCR_RTS                   0x02
#define RTSER_MCR_OUT1                  0x04
#define RTSER_MCR_OUT2                  0x08
#define RTSER_MCR_LOOP                  0x10

#define RTSER_BREAK_CLR                 0x00
#define RTSER_BREAK_SET                 0x01


typedef struct rtser_config {
        int             config_mask;

        int             baud_rate;

        int             parity;

        int             data_bits;

        int             stop_bits;

        int             handshake;

        int             fifo_depth;

        int             reserved;

        nanosecs_rel_t  rx_timeout;

        nanosecs_rel_t  tx_timeout;

        nanosecs_rel_t  event_timeout;

        int             timestamp_history;

        int             event_mask;

        int             rs485;
} rtser_config_t;

typedef struct rtser_status {
        int             line_status;

        int             modem_status;
} rtser_status_t;

typedef struct rtser_event {
        int             events;

        int             rx_pending;

        nanosecs_abs_t  last_timestamp;

        nanosecs_abs_t  rxpend_timestamp;
} rtser_event_t;


#define RTIOC_TYPE_SERIAL               RTDM_CLASS_SERIAL


#define RTDM_SUBCLASS_16550A            0

#define RTSER_RTIOC_GET_CONFIG  \
        _IOR(RTIOC_TYPE_SERIAL, 0x00, struct rtser_config)

#define RTSER_RTIOC_SET_CONFIG  \
        _IOW(RTIOC_TYPE_SERIAL, 0x01, struct rtser_config)

#define RTSER_RTIOC_GET_STATUS  \
        _IOR(RTIOC_TYPE_SERIAL, 0x02, struct rtser_status)

#define RTSER_RTIOC_GET_CONTROL \
        _IOR(RTIOC_TYPE_SERIAL, 0x03, int)

#define RTSER_RTIOC_SET_CONTROL \
        _IOW(RTIOC_TYPE_SERIAL, 0x04, int)

#define RTSER_RTIOC_WAIT_EVENT  \
        _IOR(RTIOC_TYPE_SERIAL, 0x05, struct rtser_event)

#define RTSER_RTIOC_BREAK_CTL   \
        _IOR(RTIOC_TYPE_SERIAL, 0x06, int)

#endif /* !_RTDM_UAPI_SERIAL_H */