mirror of
https://git.FreeBSD.org/src.git
synced 2024-12-05 09:14:03 +00:00
129 lines
4.1 KiB
C
129 lines
4.1 KiB
C
/*-
|
|
* 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.
|
|
*
|
|
* $FreeBSD$
|
|
*/
|
|
|
|
/*
|
|
* 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) */
|