amigaints.h (3583B)
1/* 2** amigaints.h -- Amiga Linux interrupt handling structs and prototypes 3** 4** Copyright 1992 by Greg Harp 5** 6** This file is subject to the terms and conditions of the GNU General Public 7** License. See the file COPYING in the main directory of this archive 8** for more details. 9** 10** Created 10/2/92 by Greg Harp 11*/ 12 13#ifndef _ASMm68k_AMIGAINTS_H_ 14#define _ASMm68k_AMIGAINTS_H_ 15 16#include <asm/irq.h> 17 18/* 19** Amiga Interrupt sources. 20** 21*/ 22 23#define AUTO_IRQS (8) 24#define AMI_STD_IRQS (14) 25#define CIA_IRQS (5) 26#define AMI_IRQS (32) /* AUTO_IRQS+AMI_STD_IRQS+2*CIA_IRQS */ 27 28/* builtin serial port interrupts */ 29#define IRQ_AMIGA_TBE (IRQ_USER+0) 30#define IRQ_AMIGA_RBF (IRQ_USER+11) 31 32/* floppy disk interrupts */ 33#define IRQ_AMIGA_DSKBLK (IRQ_USER+1) 34#define IRQ_AMIGA_DSKSYN (IRQ_USER+12) 35 36/* software interrupts */ 37#define IRQ_AMIGA_SOFT (IRQ_USER+2) 38 39/* interrupts from external hardware */ 40#define IRQ_AMIGA_PORTS IRQ_AUTO_2 41#define IRQ_AMIGA_EXTER IRQ_AUTO_6 42 43/* copper interrupt */ 44#define IRQ_AMIGA_COPPER (IRQ_USER+4) 45 46/* vertical blanking interrupt */ 47#define IRQ_AMIGA_VERTB (IRQ_USER+5) 48 49/* Blitter done interrupt */ 50#define IRQ_AMIGA_BLIT (IRQ_USER+6) 51 52/* Audio interrupts */ 53#define IRQ_AMIGA_AUD0 (IRQ_USER+7) 54#define IRQ_AMIGA_AUD1 (IRQ_USER+8) 55#define IRQ_AMIGA_AUD2 (IRQ_USER+9) 56#define IRQ_AMIGA_AUD3 (IRQ_USER+10) 57 58/* CIA interrupt sources */ 59#define IRQ_AMIGA_CIAA (IRQ_USER+14) 60#define IRQ_AMIGA_CIAA_TA (IRQ_USER+14) 61#define IRQ_AMIGA_CIAA_TB (IRQ_USER+15) 62#define IRQ_AMIGA_CIAA_ALRM (IRQ_USER+16) 63#define IRQ_AMIGA_CIAA_SP (IRQ_USER+17) 64#define IRQ_AMIGA_CIAA_FLG (IRQ_USER+18) 65#define IRQ_AMIGA_CIAB (IRQ_USER+19) 66#define IRQ_AMIGA_CIAB_TA (IRQ_USER+19) 67#define IRQ_AMIGA_CIAB_TB (IRQ_USER+20) 68#define IRQ_AMIGA_CIAB_ALRM (IRQ_USER+21) 69#define IRQ_AMIGA_CIAB_SP (IRQ_USER+22) 70#define IRQ_AMIGA_CIAB_FLG (IRQ_USER+23) 71 72 73/* INTREQR masks */ 74#define IF_SETCLR 0x8000 /* set/clr bit */ 75#define IF_INTEN 0x4000 /* master interrupt bit in INT* registers */ 76#define IF_EXTER 0x2000 /* external level 6 and CIA B interrupt */ 77#define IF_DSKSYN 0x1000 /* disk sync interrupt */ 78#define IF_RBF 0x0800 /* serial receive buffer full interrupt */ 79#define IF_AUD3 0x0400 /* audio channel 3 done interrupt */ 80#define IF_AUD2 0x0200 /* audio channel 2 done interrupt */ 81#define IF_AUD1 0x0100 /* audio channel 1 done interrupt */ 82#define IF_AUD0 0x0080 /* audio channel 0 done interrupt */ 83#define IF_BLIT 0x0040 /* blitter done interrupt */ 84#define IF_VERTB 0x0020 /* vertical blanking interrupt */ 85#define IF_COPER 0x0010 /* copper interrupt */ 86#define IF_PORTS 0x0008 /* external level 2 and CIA A interrupt */ 87#define IF_SOFT 0x0004 /* software initiated interrupt */ 88#define IF_DSKBLK 0x0002 /* diskblock DMA finished */ 89#define IF_TBE 0x0001 /* serial transmit buffer empty interrupt */ 90 91/* CIA interrupt control register bits */ 92 93#define CIA_ICR_TA 0x01 94#define CIA_ICR_TB 0x02 95#define CIA_ICR_ALRM 0x04 96#define CIA_ICR_SP 0x08 97#define CIA_ICR_FLG 0x10 98#define CIA_ICR_ALL 0x1f 99#define CIA_ICR_SETCLR 0x80 100 101extern void amiga_init_IRQ(void); 102 103/* to access the interrupt control registers of CIA's use only 104** these functions, they behave exactly like the amiga os routines 105*/ 106 107extern struct ciabase ciaa_base, ciab_base; 108 109extern void cia_init_IRQ(struct ciabase *base); 110extern unsigned char cia_set_irq(struct ciabase *base, unsigned char mask); 111extern unsigned char cia_able_irq(struct ciabase *base, unsigned char mask); 112 113#endif /* asm-m68k/amigaints.h */