/* * Mach Operating System * Copyright (c) 1992 Carnegie Mellon University * All Rights Reserved. * * Permission to use, copy, modify and distribute this software and its * documentation is hereby granted, provided that both the copyright * notice and this permission notice appear in all copies of the * software, derivative works or modified versions, and any portions * thereof, and that both notices appear in supporting documentation. * * CARNEGIE MELLON ALLOWS FREE USE OF THIS SOFTWARE IN ITS "AS IS" * CONDITION. CARNEGIE MELLON DISCLAIMS ANY LIABILITY OF ANY KIND FOR * ANY DAMAGES WHATSOEVER RESULTING FROM THE USE OF THIS SOFTWARE. * * Carnegie Mellon requests users of this software to return to * * Software Distribution Coordinator or Software.Distribution@CS.CMU.EDU * School of Computer Science * Carnegie Mellon University * Pittsburgh PA 15213-3890 * * any improvements or extensions that they make and grant Carnegie Mellon * the rights to redistribute these changes. */ /* This is a rewrite (retype) of the Amiga's CIA chip register map, based * on the Hardware Reference Manual. It is NOT based on the Amiga's * hardware/cia.h. * * $Id: cia.h,v 1.6 1994/06/04 11:58:42 chopps Exp $ */ #ifndef _AMIGA_CIA_ #define _AMIGA_CIA_ struct CIA { volatile unsigned char pra; char pad0[0xff]; volatile unsigned char prb; char pad1[0xff]; volatile unsigned char ddra; char pad2[0xff]; volatile unsigned char ddrb; char pad3[0xff]; volatile unsigned char talo; char pad4[0xff]; volatile unsigned char tahi; char pad5[0xff]; volatile unsigned char tblo; char pad6[0xff]; volatile unsigned char tbhi; char pad7[0xff]; volatile unsigned char todlo; char pad8[0xff]; volatile unsigned char todmid; char pad9[0xff]; volatile unsigned char todhi; char pada[0x1ff]; volatile unsigned char sdr; char padc[0xff]; volatile unsigned char icr; char padd[0xff]; volatile unsigned char cra; char pade[0xff]; volatile unsigned char crb; char padf[0xff]; }; #ifdef KERNEL #ifndef LOCORE vm_offset_t CIAAbase, CIABbase, CIAADDR; #define CIABASE (0x00BFC000) #define CIATOP (0x00C00000) #define NCIAPG btoc(CIATOP - CIABASE) #endif #define ciaa (*((volatile struct CIA *)CIAAbase)) #define ciab (*((volatile struct CIA *)CIABbase)) #endif /* * bits in CIA-B */ #define CIAB_PRA_BUSY (1<<0) #define CIAB_PRA_POUT (1<<1) #define CIAB_PRA_SEL (1<<2) #define CIAB_PRA_DSR (1<<3) #define CIAB_PRA_CTS (1<<4) #define CIAB_PRA_CD (1<<5) #define CIAB_PRA_RTS (1<<6) #define CIAB_PRA_DTR (1<<7) #define CIAB_PRB_STEP (1<<0) #define CIAB_PRB_DIR (1<<1) #define CIAB_PRB_SIDE (1<<2) #define CIAB_PRB_SEL0 (1<<3) #define CIAB_PRB_SEL1 (1<<4) #define CIAB_PRB_SEL2 (1<<5) #define CIAB_PRB_SEL3 (1<<6) #define CIAB_PRB_MTR (1<<7) /* * bits in CIA-A */ #define CIAA_PRA_OVL (1<<0) #define CIAA_PRA_LED (1<<1) #define CIAA_PRA_CHNG (1<<2) #define CIAA_PRA_WPRO (1<<3) #define CIAA_PRA_TK0 (1<<4) #define CIAA_PRA_RDY (1<<5) #define CIAA_PRA_FIR0 (1<<6) #define CIAA_PRA_FIR1 (1<<7) /* * ciaa-prb is centronics interface */ /* * interrupt bits */ #define CIA_ICR_TA (1<<0) #define CIA_ICR_TB (1<<1) #define CIA_ICR_ALARM (1<<2) #define CIA_ICR_SP (1<<3) #define CIA_ICR_FLG (1<<4) #define CIA_ICR_IR_SC (1<<7) /* * since many CIA signals are low-active, these defines should make the * code more readable */ #define SETDCD(c) (c &= ~CIAB_PRA_CD) #define CLRDCD(c) (c |= CIAB_PRA_CD) #define ISDCD(c) (!(c & CIAB_PRA_CD)) #define SETCTS(c) (c &= ~CIAB_PRA_CTS) #define CLRCTS(c) (c |= CIAB_PRA_CTS) #define ISCTS(c) (!(c & CIAB_PRA_CTS)) #define SETRTS(c) (c &= ~CIAB_PRA_RTS) #define CLRRTS(c) (c |= CIAB_PRA_RTS) #define ISRTS(c) (!(c & CIAB_PRA_RTS)) #define SETDTR(c) (c &= ~CIAB_PRA_DTR) #define CLRDTR(c) (c |= CIAB_PRA_DTR) #define ISDTR(c) (!(c & CIAB_PRA_DTR)) #define SETDSR(c) (c &= ~CIAB_PRA_DSR) #define CLRDSR(c) (c |= CIAB_PRA_DSR) #define ISDSR(c) (!(c & CIAB_PRA_DSR)) void dispatch_cia_ints __P((int, int)); void ciaa_intr __P((void)); void ciab_intr __P((void)); #endif _AMIGA_CIA_