source: rtems/c/src/lib/libbsp/m68k/gen68340/include/m340uart.h @ 9b4422a2

/*
 *  Header file for console driver
 *  defines for accessing M68340/68349 UART registers
 *
 *  Author:
 *  Geoffroy Montel
 *  France Telecom - CNET/DSM/TAM/CAT
 *  4, rue du Clos Courtel
 *  35512 CESSON-SEVIGNE
 *  FRANCE
 *
 *  e-mail: g_montel@yahoo.com
 *
 *
 *  COPYRIGHT (c) 1989-2008.
 *  On-Line Applications Research Corporation (OAR).
 *
 *  The license and distribution terms for this file may be
 *  found in the file LICENSE in this distribution or at
 *  http://www.rtems.com/license/LICENSE.
 */

#ifndef __m340uart_H__
#define __m340uart_H__

/* UART initialisation */
#define UART_CHANNEL_A                  0
#define UART_CHANNEL_B                  1
#define UART_NUMBER_OF_CHANNELS         2
#define UART_CONSOLE_NAME               "/dev/console"
#define UART_RAW_IO_NAME                "/dev/tty1"
#define UART_FIFO_FULL                  0
#define UART_CRR                        1
#define UART_INTERRUPTS                 0
#define UART_POLLING                    1
#define UART_TERMIOS_CONSOLE            0
#define UART_TERMIOS_RAW                1
#define UART_TERMIOS_MIN_DEFAULT        1
#define UART_TERMIOS_TIME_DEFAULT       0

void Init_UART_Table(void);

typedef struct {
                uint8_t                 enable;
                uint16_t                rx_buffer_size; /* NOT IMPLEMENTED */
                uint16_t                tx_buffer_size; /* NOT IMPLEMENTED */
               } uart_termios_config;

typedef struct { /* for one channel */
                uint8_t                 enable;         /* use this channel */
                char                    name[64];       /* use UART_CONSOLE_NAME for console purpose */
                uint8_t                 parity_mode;    /* parity mode, see MR1 section for defines */
                uint8_t                 bits_per_char;  /* bits per character, see MR1 section for defines  */
                float                   rx_baudrate;    /* Rx baudrate */
                float                   tx_baudrate;    /* Tx baudrate */
                uint8_t                 rx_mode;        /* FIFO Full (UART_FIFO_FULL) or ChannelReceiverReady (UART_CRR) */
                uint8_t                 mode;           /* use interrupts (UART_INTERRUPTS) or polling (UART_POLLING) */
                uart_termios_config     termios;
               } uart_channel_config;

extern uart_channel_config              m340_uart_config[UART_NUMBER_OF_CHANNELS];

typedef  struct {
                 int    set;    /* number of the m340 baud speed set */
                 int    rcs;    /* RCS for the needed baud set */
                 int    tcs;    /* TCS for the needed baud set */
                } t_baud_speed;

typedef  struct {
                 t_baud_speed   baud_speed_table[2];
                 short          nb;
                } t_baud_speed_table;

extern t_baud_speed_table
Find_Right_m340_UART_Config(float ChannelA_ReceiverBaudRate, float ChannelA_TransmitterBaudRate, uint8_t         enableA,
                            float ChannelB_ReceiverBaudRate, float ChannelB_TransmitterBaudRate, uint8_t         enableB);

extern rtems_isr InterruptHandler (rtems_vector_number v);

extern int dbugRead (int minor);
extern ssize_t dbugWrite (int minor, const char *buf, size_t len);

extern float m340_Baud_Rates_Table[16][2];

/*  SR */
#define m340_Rx_RDY             1
#define m340_FFULL              (1<<1)
#define m340_Tx_RDY             (1<<2)
#define m340_TxEMP              (1<<3)
#define m340_OE                 (1<<4)
#define m340_PE                 (1<<5)
#define m340_FE                 (1<<6)
#define m340_RB                 (1<<7)

/*  IER */
#define m340_TxRDYA             1
#define m340_RxRDYA             (1<<1)
#define m340_TxRxRDYA           0x3
#define m340_TxRDYB             (1<<4)
#define m340_RxRDYB             (1<<5)
#define m340_TxRxRDYB           0x30

/*  CR */
#define m340_Reset_Error_Status 0x40
#define m340_Reset_Receiver     0x20
#define m340_Reset_Transmitter  0x30
#define m340_Transmitter_Enable (1<<2)
#define m340_Receiver_Enable    1
#define m340_Transmitter_Disable (2<<2)
#define m340_Receiver_Disable   2

/*  ACR */
#define m340_BRG_Set1           0
#define m340_BRG_Set2           (1<<7)

/*  OPCR */
#define m340_OPCR_Gal           0x0
#define m340_OPCR_Aux           0xFF

/*  ISR */
#define m340_COS                (1<<7)
#define m340_DBB                (1<<6)
#define m340_XTAL_RDY           (1<<3)
#define m340_DBA                (1<<2)

/*  MR1 */
#define m340_RxRTS              (1<<7)
#define m340_R_F                (1<<6)          /* character or block mode */
#define m340_ERR                (1<<5)
#define m340_RxRTX              (1<<7)
#define m340_Even_Parity        0
#define m340_Odd_Parity         (1<<2)
#define m340_Low_Parity         (2<<2)
#define m340_High_Parity        (3<<2)
#define m340_No_Parity          (4<<2)
#define m340_Data_Character     (6<<2)
#define m340_Address_Character  (7<<2)
#define m340_5bpc               0x0
#define m340_6bpc               0x1
#define m340_7bpc               0x2
#define m340_8bpc               0x3

/*  MR2 */
#define m340_normal             (0<<6)
#define m340_automatic_echo     (1<<6)
#define m340_local_loopback     (2<<6)
#define m340_remote_loopback    (3<<6)
#define m340_TxRTS              (1<<5)
#define m340_TxCTS              (1<<4)

/* Baud rates for Transmitter/Receiver */
#define SCLK    1               /* put your own SCLK value here */

#endif