board/esd/cpci750/serial.h

   1 /*
   2  * (C) Copyright 2001
   3  * Josh Huber <huber@mclx.com>, Mission Critical Linux, Inc.
   4  *
   5  * modified for marvell db64360 eval board by
   6  * Ingo Assmus <ingo.assmus@keymile.com>
   7  *
   8  * SPDX-License-Identifier:     GPL-2.0+
   9  */
  10
  11 /* serial.h - mostly useful for DUART serial_init in serial.c */
  12
  13 #ifndef __SERIAL_H__
  14 #define __SERIAL_H__
  15
  16 #if 0
  17
  18 #define B230400         1
  19 #define B115200         2
  20 #define B57600          4
  21 #define B38400          82
  22 #define B19200          163
  23 #define B9600           24
  24 #define B4800           651
  25 #define B2400           1302
  26 #define B1200           2604
  27 #define B600            5208
  28 #define B300            10417
  29 #define B150            20833
  30 #define B110            28409
  31 #define BDEFAULT        B115200
  32
  33                                 /* this stuff is important to initialize
  34                                 the DUART channels */
  35
  36 #define Scale           0x01L           /* distance between port addresses */
  37 #define COM1            0x000003f8              /* Keyboard */
  38 #define COM2            0x000002f8              /* Host */
  39
  40
  41 /* Port Definitions relative to base COM port addresses */
  42 #define DataIn  (0x00*Scale)    /* data input port */
  43 #define DataOut (0x00*Scale)    /* data output port */
  44 #define BaudLsb (0x00*Scale)    /* baud rate divisor least significant byte */
  45 #define BaudMsb (0x01*Scale)    /* baud rate divisor most significant byte */
  46 #define Ier     (0x01*Scale)    /* interrupt enable register */
  47 #define Iir     (0x02*Scale)    /* interrupt identification register */
  48 #define Lcr     (0x03*Scale)    /* line control register */
  49 #define Mcr     (0x04*Scale)    /* modem control register */
  50 #define Lsr     (0x05*Scale)    /* line status register */
  51 #define Msr     (0x06*Scale)    /* modem status register */
  52
  53 /* Bit Definitions for above ports */
  54 #define LcrDlab 0x80    /* b7:   enable baud rate divisor registers */
  55 #define LcrDflt 0x03    /* b6-0: no parity, 1 stop, 8 data */
  56
  57 #define McrRts  0x02    /* b1:  request to send (I am ready to xmit) */
  58 #define McrDtr  0x01    /* b0:  data terminal ready (I am alive ready to rcv) */
  59 #define McrDflt (McrRts|McrDtr)
  60
  61 #define LsrTxD  0x6000  /* b5: transmit holding register empty (i.e. xmit OK!)*/
  62                         /* b6: transmitter empty */
  63 #define LsrRxD  0x0100  /* b0: received data ready (i.e. got a byte!) */
  64
  65 #define MsrRi   0x0040  /* b6: ring indicator (other guy is ready to rcv) */
  66 #define MsrDsr  0x0020  /* b5: data set ready (other guy is alive ready to rcv */
  67 #define MsrCts  0x0010  /* b4: clear to send (other guy is ready to rcv) */
  68
  69 #define IerRda  0xf     /* b0: Enable received data available interrupt */
  70
  71 #endif
  72
  73 #endif /* __SERIAL_H__ */