/*  *********************************************************************
    *  SB1250 Board Support Package
    *  
    *  UART Constants				File: sb1250_uart.h
    *  
    *  This module contains constants and macros useful for 
    *  manipulating the SB1250's UARTs
    *
    *  SB1250 specification level:  0.2
    *  
    *  Author:  Mitch Lichtenberg (mitch@sibyte.com)
    *  
    *********************************************************************  
    *
    *  Copyright 2000,2001
    *  Broadcom Corporation. All rights reserved.
    *  
    *  This program is free software; you can redistribute it and/or 
    *  modify it under the terms of the GNU General Public License as 
    *  published by the Free Software Foundation; either version 2 of 
    *  the License, or (at your option) any later version.
    *
    *  This program is distributed in the hope that it will be useful,
    *  but WITHOUT ANY WARRANTY; without even the implied warranty of
    *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
    *  GNU General Public License for more details.
    *
    *  You should have received a copy of the GNU General Public License
    *  along with this program; if not, write to the Free Software
    *  Foundation, Inc., 59 Temple Place, Suite 330, Boston, 
    *  MA 02111-1307 USA
    ********************************************************************* */


#ifndef _SB1250_UART_H
#define _SB1250_UART_H

#include "sb1250_defs.h"

/* ********************************************************************** 
   * DUART Registers
   ********************************************************************** */

/*
 * DUART Mode Register #1 (Table 10-3)
 * Register: DUART_MODE_REG_1_A
 * Register: DUART_MODE_REG_1_B
 */

#define S_DUART_BITS_PER_CHAR       0
#define M_DUART_BITS_PER_CHAR       _SB_MAKEMASK(2,S_DUART_BITS_PER_CHAR)
#define V_DUART_BITS_PER_CHAR(x)    _SB_MAKEVALUE(x,S_DUART_BITS_PER_CHAR)

#define K_DUART_BITS_PER_CHAR_RSV0  0
#define K_DUART_BITS_PER_CHAR_RSV1  1
#define K_DUART_BITS_PER_CHAR_7     2
#define K_DUART_BITS_PER_CHAR_8     3

#define V_DUART_BITS_PER_CHAR_RSV0  V_DUART_BITS_PER_CHAR(K_DUART_BITS_PER_CHAR_RSV0)
#define V_DUART_BITS_PER_CHAR_RSV1  V_DUART_BITS_PER_CHAR(K_DUART_BITS_PER_CHAR_RSV1)
#define V_DUART_BITS_PER_CHAR_7     V_DUART_BITS_PER_CHAR(K_DUART_BITS_PER_CHAR_7)
#define V_DUART_BITS_PER_CHAR_8     V_DUART_BITS_PER_CHAR(K_DUART_BITS_PER_CHAR_8)


#define M_DUART_PARITY_TYPE_EVEN    0x00
#define M_DUART_PARITY_TYPE_ODD     _SB_MAKEMASK1(3)

#define S_DUART_PARITY_MODE          3
#define M_DUART_PARITY_MODE         _SB_MAKEMASK(2,S_DUART_PARITY_MODE)
#define V_DUART_PARITY_MODE(x)      _SB_MAKEVALUE(x,S_DUART_PARITY_MODE)

#define K_DUART_PARITY_MODE_ADD       0
#define K_DUART_PARITY_MODE_ADD_FIXED 1
#define K_DUART_PARITY_MODE_NONE      2

#define V_DUART_PARITY_MODE_ADD       V_DUART_PARITY_MODE(K_DUART_PARITY_MODE_ADD)
#define V_DUART_PARITY_MODE_ADD_FIXED V_DUART_PARITY_MODE(K_DUART_PARITY_MODE_ADD_FIXED)
#define V_DUART_PARITY_MODE_NONE      V_DUART_PARITY_MODE(K_DUART_PARITY_MODE_NONE)

#define M_DUART_ERR_MODE            _SB_MAKEMASK1(5)    /* must be zero */

#define M_DUART_RX_IRQ_SEL_RXRDY    0
#define M_DUART_RX_IRQ_SEL_RXFULL   _SB_MAKEMASK1(6)

#define M_DUART_RX_RTS_ENA          _SB_MAKEMASK1(7)

/*
 * DUART Mode Register #2 (Table 10-4)
 * Register: DUART_MODE_REG_2_A
 * Register: DUART_MODE_REG_2_B
 */

#define M_DUART_MODE_RESERVED1      _SB_MAKEMASK(3,0)   /* ignored */

#define M_DUART_STOP_BIT_LEN_2      _SB_MAKEMASK1(3)
#define M_DUART_STOP_BIT_LEN_1      0

#define M_DUART_TX_CTS_ENA          _SB_MAKEMASK1(4)

#define M_DUART_MODE_RESERVED2      _SB_MAKEMASK1(5)    /* must be zero */

#define S_DUART_CHAN_MODE	    6
#define M_DUART_CHAN_MODE           _SB_MAKEMASK(2,S_DUART_CHAN_MODE)
#define V_DUART_CHAN_MODE(x)	    _SB_MAKEVALUE(x,S_DUART_CHAN_MODE)

#define K_DUART_CHAN_MODE_NORMAL    0
#define K_DUART_CHAN_MODE_LCL_LOOP  2
#define K_DUART_CHAN_MODE_REM_LOOP  3

#define V_DUART_CHAN_MODE_NORMAL    V_DUART_CHAN_MODE(K_DUART_CHAN_MODE_NORMAL)
#define V_DUART_CHAN_MODE_LCL_LOOP  V_DUART_CHAN_MODE(K_DUART_CHAN_MODE_LCL_LOOP)
#define V_DUART_CHAN_MODE_REM_LOOP  V_DUART_CHAN_MODE(K_DUART_CHAN_MODE_REM_LOOP)

/*
 * DUART Command Register (Table 10-5)
 * Register: DUART_CMD_A
 * Register: DUART_CMD_B
 */

#define M_DUART_RX_EN               _SB_MAKEMASK1(0)
#define M_DUART_RX_DIS              _SB_MAKEMASK1(1)
#define M_DUART_TX_EN               _SB_MAKEMASK1(2)
#define M_DUART_TX_DIS              _SB_MAKEMASK1(3)

#define S_DUART_MISC_CMD	    4
#define M_DUART_MISC_CMD            _SB_MAKEMASK(3,S_DUART_MISC_CMD)
#define V_DUART_MISC_CMD(x)         _SB_MAKEVALUE(x,S_DUART_MISC_CMD)

#define K_DUART_MISC_CMD_NOACTION0       0
#define K_DUART_MISC_CMD_NOACTION1       1
#define K_DUART_MISC_CMD_RESET_RX        2
#define K_DUART_MISC_CMD_RESET_TX        3
#define K_DUART_MISC_CMD_NOACTION4       4
#define K_DUART_MISC_CMD_RESET_BREAK_INT 5
#define K_DUART_MISC_CMD_START_BREAK     6
#define K_DUART_MISC_CMD_STOP_BREAK      7

#define V_DUART_MISC_CMD_NOACTION0       V_DUART_MISC_CMD(K_DUART_MISC_CMD_NOACTION0)
#define V_DUART_MISC_CMD_NOACTION1       V_DUART_MISC_CMD(K_DUART_MISC_CMD_NOACTION1)
#define V_DUART_MISC_CMD_RESET_RX        V_DUART_MISC_CMD(K_DUART_MISC_CMD_RESET_RX)
#define V_DUART_MISC_CMD_RESET_TX        V_DUART_MISC_CMD(K_DUART_MISC_CMD_RESET_TX)
#define V_DUART_MISC_CMD_NOACTION4       V_DUART_MISC_CMD(K_DUART_MISC_CMD_NOACTION4)
#define V_DUART_MISC_CMD_RESET_BREAK_INT V_DUART_MISC_CMD(K_DUART_MISC_CMD_RESET_BREAK_INT)
#define V_DUART_MISC_CMD_START_BREAK     V_DUART_MISC_CMD(K_DUART_MISC_CMD_START_BREAK)
#define V_DUART_MISC_CMD_STOP_BREAK      V_DUART_MISC_CMD(K_DUART_MISC_CMD_STOP_BREAK)

#define M_DUART_CMD_RESERVED             _SB_MAKEMASK1(7) 

/*
 * DUART Status Register (Table 10-6)
 * Register: DUART_STATUS_A
 * Register: DUART_STATUS_B
 * READ-ONLY
 */

#define M_DUART_RX_RDY              _SB_MAKEMASK1(0)
#define M_DUART_RX_FFUL             _SB_MAKEMASK1(1)
#define M_DUART_TX_RDY              _SB_MAKEMASK1(2)
#define M_DUART_TX_EMT              _SB_MAKEMASK1(3)
#define M_DUART_OVRUN_ERR           _SB_MAKEMASK1(4)
#define M_DUART_PARITY_ERR          _SB_MAKEMASK1(5)
#define M_DUART_FRM_ERR             _SB_MAKEMASK1(6)
#define M_DUART_RCVD_BRK            _SB_MAKEMASK1(7)

/*
 * DUART Baud Rate Register (Table 10-7)
 * Register: DUART_CLK_SEL_A 
 * Register: DUART_CLK_SEL_B
 */

#define M_DUART_CLK_COUNTER         _SB_MAKEMASK(12,0)
#define V_DUART_BAUD_RATE(x)        (100000000/((x)*20)-1)

/*
 * DUART Data Registers (Table 10-8 and 10-9)
 * Register: DUART_RX_HOLD_A
 * Register: DUART_RX_HOLD_B
 * Register: DUART_TX_HOLD_A
 * Register: DUART_TX_HOLD_B
 */

#define M_DUART_RX_DATA             _SB_MAKEMASK(8,0)
#define M_DUART_TX_DATA             _SB_MAKEMASK(8,0)

/*
 * DUART Input Port Register (Table 10-10)
 * Register: DUART_IN_PORT
 */

#define M_DUART_IN_PIN0_VAL         _SB_MAKEMASK1(0)
#define M_DUART_IN_PIN1_VAL         _SB_MAKEMASK1(1)
#define M_DUART_IN_PIN2_VAL         _SB_MAKEMASK1(2)
#define M_DUART_IN_PIN3_VAL         _SB_MAKEMASK1(3)
#define M_DUART_IN_PIN4_VAL         _SB_MAKEMASK1(4)
#define M_DUART_IN_PIN5_VAL         _SB_MAKEMASK1(5)
#define M_DUART_RIN0_PIN            _SB_MAKEMASK1(6)
#define M_DUART_RIN1_PIN            _SB_MAKEMASK1(7)

/*
 * DUART Input Port Change Status Register (Tables 10-11, 10-12, and 10-13)
 * Register: DUART_INPORT_CHNG
 */

#define S_DUART_IN_PIN_VAL          0
#define M_DUART_IN_PIN_VAL          _SB_MAKEMASK(4,S_DUART_IN_PIN_VAL)

#define S_DUART_IN_PIN_CHNG         4
#define M_DUART_IN_PIN_CHNG         _SB_MAKEMASK(4,S_DUART_IN_PIN_CHNG)

/*
 * DUART Output port control register (Table 10-14)
 * Register: DUART_OPCR
 */

#define M_DUART_OPCR_RESERVED0      _SB_MAKEMASK1(0)   /* must be zero */
#define M_DUART_OPC2_SEL            _SB_MAKEMASK1(1)
#define M_DUART_OPCR_RESERVED1      _SB_MAKEMASK1(2)   /* must be zero */
#define M_DUART_OPC3_SEL            _SB_MAKEMASK1(3)
#define M_DUART_OPCR_RESERVED2      _SB_MAKEMASK(4,4)  /* must be zero */

/*
 * DUART Aux Control Register (Table 10-15)
 * Register: DUART_AUX_CTRL
 */

#define M_DUART_IP0_CHNG_ENA        _SB_MAKEMASK1(0)
#define M_DUART_IP1_CHNG_ENA        _SB_MAKEMASK1(1)
#define M_DUART_IP2_CHNG_ENA        _SB_MAKEMASK1(2)
#define M_DUART_IP3_CHNG_ENA        _SB_MAKEMASK1(3)
#define M_DUART_ACR_RESERVED        _SB_MAKEMASK(4,4)

/*
 * DUART Interrupt Status Register (Table 10-16)
 * Register: DUART_ISR
 */

#define M_DUART_ISR_TX_A            _SB_MAKEMASK1(0)
#define M_DUART_ISR_RX_A            _SB_MAKEMASK1(1)
#define M_DUART_ISR_BRK_A           _SB_MAKEMASK1(2)
#define M_DUART_ISR_IN_A            _SB_MAKEMASK1(3)
#define M_DUART_ISR_TX_B            _SB_MAKEMASK1(4)
#define M_DUART_ISR_RX_B            _SB_MAKEMASK1(5)
#define M_DUART_ISR_BRK_B           _SB_MAKEMASK1(6)
#define M_DUART_ISR_IN_B            _SB_MAKEMASK1(7)

/*
 * DUART Channel A Interrupt Status Register (Table 10-17)
 * DUART Channel B Interrupt Status Register (Table 10-18)
 * Register: DUART_ISR_A
 * Register: DUART_ISR_B
 */

#define M_DUART_ISR_TX              _SB_MAKEMASK1(0)
#define M_DUART_ISR_RX              _SB_MAKEMASK1(1)
#define M_DUART_ISR_BRK             _SB_MAKEMASK1(2)
#define M_DUART_ISR_IN              _SB_MAKEMASK1(3)
#define M_DUART_ISR_RESERVED        _SB_MAKEMASK(4,4)

/*
 * DUART Interrupt Mask Register (Table 10-19)
 * Register: DUART_IMR
 */

#define M_DUART_IMR_TX_A            _SB_MAKEMASK1(0)
#define M_DUART_IMR_RX_A            _SB_MAKEMASK1(1)
#define M_DUART_IMR_BRK_A           _SB_MAKEMASK1(2)
#define M_DUART_IMR_IN_A            _SB_MAKEMASK1(3)
#define M_DUART_IMR_ALL_A	    _SB_MAKEMASK(4,0)

#define M_DUART_IMR_TX_B            _SB_MAKEMASK1(4)
#define M_DUART_IMR_RX_B            _SB_MAKEMASK1(5)
#define M_DUART_IMR_BRK_B           _SB_MAKEMASK1(6)
#define M_DUART_IMR_IN_B            _SB_MAKEMASK1(7)
#define M_DUART_IMR_ALL_B           _SB_MAKEMASK(4,4)

/*
 * DUART Channel A Interrupt Mask Register (Table 10-20)
 * DUART Channel B Interrupt Mask Register (Table 10-21)
 * Register: DUART_IMR_A
 * Register: DUART_IMR_B
 */

#define M_DUART_IMR_TX              _SB_MAKEMASK1(0)
#define M_DUART_IMR_RX              _SB_MAKEMASK1(1)
#define M_DUART_IMR_BRK             _SB_MAKEMASK1(2)
#define M_DUART_IMR_IN              _SB_MAKEMASK1(3)
#define M_DUART_IMR_ALL		    _SB_MAKEMASK(4,0)
#define M_DUART_IMR_RESERVED        _SB_MAKEMASK(4,4)


/*
 * DUART Output Port Set Register (Table 10-22)
 * Register: DUART_SET_OPR
 */

#define M_DUART_SET_OPR0            _SB_MAKEMASK1(0)
#define M_DUART_SET_OPR1            _SB_MAKEMASK1(1)
#define M_DUART_SET_OPR2            _SB_MAKEMASK1(2)
#define M_DUART_SET_OPR3            _SB_MAKEMASK1(3)
#define M_DUART_OPSR_RESERVED       _SB_MAKEMASK(4,4)

/*
 * DUART Output Port Clear Register (Table 10-23)
 * Register: DUART_CLEAR_OPR
 */

#define M_DUART_CLR_OPR0            _SB_MAKEMASK1(0)
#define M_DUART_CLR_OPR1            _SB_MAKEMASK1(1)
#define M_DUART_CLR_OPR2            _SB_MAKEMASK1(2)
#define M_DUART_CLR_OPR3            _SB_MAKEMASK1(3)
#define M_DUART_OPCR_RESERVED       _SB_MAKEMASK(4,4)

/*
 * DUART Output Port RTS Register (Table 10-24)
 * Register: DUART_OUT_PORT
 */

#define M_DUART_OUT_PIN_SET0        _SB_MAKEMASK1(0)
#define M_DUART_OUT_PIN_SET1        _SB_MAKEMASK1(1)
#define M_DUART_OUT_PIN_CLR0        _SB_MAKEMASK1(2)
#define M_DUART_OUT_PIN_CLR1        _SB_MAKEMASK1(3)
#define M_DUART_OPRR_RESERVED       _SB_MAKEMASK(4,4)

#define M_DUART_OUT_PIN_SET(chan) \
    (chan == 0 ? M_DUART_OUT_PIN_SET0 : M_DUART_OUT_PIN_SET1)
#define M_DUART_OUT_PIN_CLR(chan) \
    (chan == 0 ? M_DUART_OUT_PIN_CLR0 : M_DUART_OUT_PIN_CLR1)

/*
 * XXX To be added: Synchronous Serial definitions
 */

/* ********************************************************************** */


#endif
