forked from Imagelibrary/rtems
143 lines
3.4 KiB
C
143 lines
3.4 KiB
C
/**
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* @file
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*
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*/
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/*
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* COPYRIGHT (c) 1998 by Radstone Technology
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*
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*
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* THIS FILE IS PROVIDED TO YOU, THE USER, "AS IS", WITHOUT WARRANTY OF ANY
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* KIND, EITHER EXPRESSED OR IMPLIED, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTY OF FITNESS FOR A PARTICULAR PURPOSE. THE ENTIRE RISK
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* AS TO THE QUALITY AND PERFORMANCE OF ALL CODE IN THIS FILE IS WITH YOU.
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*
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* You are hereby granted permission to use, copy, modify, and distribute
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* this file, provided that this notice, plus the above copyright notice
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* and disclaimer, appears in all copies. Radstone Technology will provide
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* no support for this code.
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*
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* COPYRIGHT (c) 1989-2012.
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* On-Line Applications Research Corporation (OAR).
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*
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* The license and distribution terms for this file may be
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* found in the file LICENSE in this distribution or at
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* http://www.rtems.org/license/LICENSE.
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*/
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#ifndef _NS16550_P_H_
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#define _NS16550_P_H_
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#ifndef ASM
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#include <libchip/serial.h>
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#endif
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#ifdef __cplusplus
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extern "C" {
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#endif
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/*
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* Define NS16550_STATIC to nothing while debugging so the entry points
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* will show up in the symbol table.
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*/
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#define NS16550_STATIC static
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#define NS16550_RECEIVE_BUFFER 0
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#define NS16550_TRANSMIT_BUFFER 0
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#define NS16550_DIVISOR_LATCH_L 0
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#define NS16550_INTERRUPT_ENABLE 1
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#define NS16550_DIVISOR_LATCH_M 1
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#define NS16550_INTERRUPT_ID 2
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#define NS16550_FIFO_CONTROL 2
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#define NS16550_LINE_CONTROL 3
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#define NS16550_MODEM_CONTROL 4
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#define NS16550_LINE_STATUS 5
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#define NS16550_MODEM_STATUS 6
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#define NS16550_SCRATCH_PAD 7
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#define NS16550_FRACTIONAL_DIVIDER 10
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/*
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* Define serial port interrupt enable register structure.
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*/
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#define SP_INT_RX_ENABLE 0x01
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#define SP_INT_TX_ENABLE 0x02
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#define SP_INT_LS_ENABLE 0x04
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#define SP_INT_MS_ENABLE 0x08
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#define NS16550_ENABLE_ALL_INTR (SP_INT_RX_ENABLE | SP_INT_TX_ENABLE)
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#define NS16550_DISABLE_ALL_INTR 0x00
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#define NS16550_ENABLE_ALL_INTR_EXCEPT_TX (SP_INT_RX_ENABLE)
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/*
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* Define serial port interrupt ID register structure.
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*/
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#define SP_IID_0 0x01
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#define SP_IID_1 0x02
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#define SP_IID_2 0x04
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#define SP_IID_3 0x08
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/*
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* Define serial port fifo control register structure.
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*/
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#define SP_FIFO_ENABLE 0x01
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#define SP_FIFO_RXRST 0x02
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#define SP_FIFO_TXRST 0x04
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#define SP_FIFO_DMA 0x08
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#define SP_FIFO_RXLEVEL 0xc0
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#define SP_FIFO_SIZE 16
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/*
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* Define serial port line control register structure.
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*/
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#define SP_LINE_SIZE 0x03
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#define SP_LINE_STOP 0x04
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#define SP_LINE_PAR 0x08
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#define SP_LINE_ODD 0x10
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#define SP_LINE_STICK 0x20
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#define SP_LINE_BREAK 0x40
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#define SP_LINE_DLAB 0x80
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/*
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* Line status register character size definitions.
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*/
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#define FIVE_BITS 0x0 /* five bits per character */
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#define SIX_BITS 0x1 /* six bits per character */
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#define SEVEN_BITS 0x2 /* seven bits per character */
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#define EIGHT_BITS 0x3 /* eight bits per character */
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/*
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* Define serial port modem control register structure.
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*/
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#define SP_MODEM_DTR 0x01
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#define SP_MODEM_RTS 0x02
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#define SP_MODEM_IRQ 0x08
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#define SP_MODEM_LOOP 0x10
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#define SP_MODEM_DIV4 0x80
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/*
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* Define serial port line status register structure.
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*/
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#define SP_LSR_RDY 0x01
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#define SP_LSR_EOVRUN 0x02
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#define SP_LSR_EPAR 0x04
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#define SP_LSR_EFRAME 0x08
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#define SP_LSR_BREAK 0x10
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#define SP_LSR_THOLD 0x20
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#define SP_LSR_TX 0x40
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#define SP_LSR_EFIFO 0x80
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#ifdef __cplusplus
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}
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#endif
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#endif /* _NS16550_P_H_ */
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