freebsd-dev/sys/i386/isa/ic/rsa.h

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/*-
* Copyright (c) 1999 FreeBSD Inc.
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
*
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
*
1999-08-28 01:08:13 +00:00
* $FreeBSD$
*/
/*
* RSA Mode Driver Data Sheet
*
* <<Register Map>>
* Base + 0x00
* Mode Select Register(Read/Write)
* bit4=interrupt type(1: level, 0: edge)
* bit3=Auto RTS-CTS Flow Control Enable
* bit2=External FIFO Enable
* bit1=Reserved(Default 0)Don't Change!!
* bit0=Swap Upper 8byte and Lower 8byte in 16byte space.
*
* Base + 0x01
* Interrupt Enable Register(Read/Write)
* bit4=Hardware Timer Interrupt Enable
* bit3=Character Time-Out Interrupt Enable
* bit2=Tx FIFO Empty Interrupt Enable
* bit1=Tx FIFO Half Full Interrupt Enable
* bit0=Rx FIFO Half Full Interrupt Enable
*
* Base + 0x02
* Status Read Register(Read)
* bit7=Hardware Time Out Interrupt Status(1: True, 0: False)
* bit6=Character Time Out Interrupt Status
* bit5=Rx FIFO Full Flag(0: True, 1: False)
* bit4=Rx FIFO Half Full Flag
* bit3=Rx FIFO Empty Flag
* bit2=Tx FIFO Full Flag
* bit1=Tx FIFO Half Full Flag
* bit0=Tx FIFO Empty Flag
*
* Base + 0x02
* FIFO Reset Register(Write)
* Reset Extrnal FIFO
*
* Base + 0x03
* Timer Interval Value Set Register(Read/Write)
* Range of n: 1-255
* Interval Value: n * 0.2ms
*
* Base + 0x04
* Timer Control Register(Read/Write)
* bit0=Timer Enable
*
* Base + 0x08 - 0x0f
* Same as UART 16550
*
* Special Regisgter in RSA Mode
* UART Data Register(Base + 0x08)
* Data transfer between Extrnal FIFO
*
* UART MCR(Base + 0x0c)
* bit3(OUT2[MCR_IENABLE])=1: Diable 16550 to Rx FIFO transfer
* bit2(OUT1[MCR_DRS])=1: Diable Tx FIFO to 16550 transfer
*
* <<Intrrupt and Intrrupt Reset>>
* o Reciver Line Status(from UART16550)
* Reset: Read LSR
*
* o Modem Status(from UART16550)
* Reset: Read MSR
*
* o Rx FIFO Half Full(from Extrnal FIFO)
* Reset: Read Rx FIFO under Hall Full
*
* o Character Time Out(from Extrnal FIFO)
* Reset: Read Rx FIFO or SRR
*
* o Tx FIFO Empty(from Extrnal FIFO)
* Reset: Write Tx FIFO or Read SRR
*
* o Tx FIFO Half Full(from Extrnal FIFO)
* Reset: Write Tx FIFO until Hall Full or Read SRR
*
* o Hardware Timer(from Extrnal FIFO)
* Reset: Disable Timer in TCR
* Notes: If you want to use Timer for next intrrupt,
* you must enable Timer in TCR
*
* <<Used Setting>>
* Auto RTS-CTS: Enable or Disable
* External FIFO: Enable
* Swap 8bytes: Disable
* Haredware Timer: Disable
* interrupt type: edge
* interrupt source:
* Hareware Timer
* Character Time Out
* Tx FIFO Empty
* Rx FIFO Half Full
*
*/
/* I/O-DATA RSA Serise Exrension Register */
#define rsa_msr 0 /* Mode Status Register (R/W) */
#define rsa_ier 1 /* Interrupt Enable Register (R/W) */
#define rsa_srr 2 /* Status Read Register (R) */
#define rsa_frr 2 /* FIFO Reset Register (W) */
#define rsa_tivsr 3 /* Timer Interval Value Set Register (R/W) */
#define rsa_tcr 4 /* Timer Control Register (W) */