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/* 17** Amiga Interrupt sources. 18** 19*/ 20 21#define AUTO_IRQS (8) 22#define AMI_STD_IRQS (14) 23#define CIA_IRQS (5) 24#define AMI_IRQS (32) /* AUTO_IRQS+AMI_STD_IRQS+2*CIA_IRQS */ 25 26/* vertical blanking interrupt */ 27#define IRQ_AMIGA_VERTB 0 28 29/* copper interrupt */ 30#define IRQ_AMIGA_COPPER 1 31 32/* Audio interrupts */ 33#define IRQ_AMIGA_AUD0 2 34#define IRQ_AMIGA_AUD1 3 35#define IRQ_AMIGA_AUD2 4 36#define IRQ_AMIGA_AUD3 5 37 38/* Blitter done interrupt */ 39#define IRQ_AMIGA_BLIT 6 40 41/* floppy disk interrupts */ 42#define IRQ_AMIGA_DSKSYN 7 43#define IRQ_AMIGA_DSKBLK 8 44 45/* builtin serial port interrupts */ 46#define IRQ_AMIGA_RBF 9 47#define IRQ_AMIGA_TBE 10 48 49/* software interrupts */ 50#define IRQ_AMIGA_SOFT 11 51 52/* interrupts from external hardware */ 53#define IRQ_AMIGA_PORTS 12 54#define IRQ_AMIGA_EXTER 13 55 56/* CIA interrupt sources */ 57#define IRQ_AMIGA_CIAA 14 58#define IRQ_AMIGA_CIAA_TA 14 59#define IRQ_AMIGA_CIAA_TB 15 60#define IRQ_AMIGA_CIAA_ALRM 16 61#define IRQ_AMIGA_CIAA_SP 17 62#define IRQ_AMIGA_CIAA_FLG 18 63#define IRQ_AMIGA_CIAB 19 64#define IRQ_AMIGA_CIAB_TA 19 65#define IRQ_AMIGA_CIAB_TB 20 66#define IRQ_AMIGA_CIAB_ALRM 21 67#define IRQ_AMIGA_CIAB_SP 22 68#define IRQ_AMIGA_CIAB_FLG 23 69 70/* auto-vector interrupts */ 71#define IRQ_AMIGA_AUTO 24 72#define IRQ_AMIGA_AUTO_0 24 /* This is just a dummy */ 73#define IRQ_AMIGA_AUTO_1 25 74#define IRQ_AMIGA_AUTO_2 26 75#define IRQ_AMIGA_AUTO_3 27 76#define IRQ_AMIGA_AUTO_4 28 77#define IRQ_AMIGA_AUTO_5 29 78#define IRQ_AMIGA_AUTO_6 30 79#define IRQ_AMIGA_AUTO_7 31 80 81#define IRQ_FLOPPY IRQ_AMIGA_DSKBLK 82 83/* INTREQR masks */ 84#define IRQ1_MASK 0x0007 /* INTREQR mask for IRQ 1 */ 85#define IRQ2_MASK 0x0008 /* INTREQR mask for IRQ 2 */ 86#define IRQ3_MASK 0x0070 /* INTREQR mask for IRQ 3 */ 87#define IRQ4_MASK 0x0780 /* INTREQR mask for IRQ 4 */ 88#define IRQ5_MASK 0x1800 /* INTREQR mask for IRQ 5 */ 89#define IRQ6_MASK 0x2000 /* INTREQR mask for IRQ 6 */ 90#define IRQ7_MASK 0x4000 /* INTREQR mask for IRQ 7 */ 91 92#define IF_SETCLR 0x8000 /* set/clr bit */ 93#define IF_INTEN 0x4000 /* master interrupt bit in INT* registers */ 94#define IF_EXTER 0x2000 /* external level 6 and CIA B interrupt */ 95#define IF_DSKSYN 0x1000 /* disk sync interrupt */ 96#define IF_RBF 0x0800 /* serial receive buffer full interrupt */ 97#define IF_AUD3 0x0400 /* audio channel 3 done interrupt */ 98#define IF_AUD2 0x0200 /* audio channel 2 done interrupt */ 99#define IF_AUD1 0x0100 /* audio channel 1 done interrupt */ 100#define IF_AUD0 0x0080 /* audio channel 0 done interrupt */ 101#define IF_BLIT 0x0040 /* blitter done interrupt */ 102#define IF_VERTB 0x0020 /* vertical blanking interrupt */ 103#define IF_COPER 0x0010 /* copper interrupt */ 104#define IF_PORTS 0x0008 /* external level 2 and CIA A interrupt */ 105#define IF_SOFT 0x0004 /* software initiated interrupt */ 106#define IF_DSKBLK 0x0002 /* diskblock DMA finished */ 107#define IF_TBE 0x0001 /* serial transmit buffer empty interrupt */ 108 109extern void amiga_do_irq(int irq, struct pt_regs *fp); 110extern void amiga_do_irq_list(int irq, struct pt_regs *fp); 111 112extern unsigned short amiga_intena_vals[]; 113 114/* CIA interrupt control register bits */ 115 116#define CIA_ICR_TA 0x01 117#define CIA_ICR_TB 0x02 118#define CIA_ICR_ALRM 0x04 119#define CIA_ICR_SP 0x08 120#define CIA_ICR_FLG 0x10 121#define CIA_ICR_ALL 0x1f 122#define CIA_ICR_SETCLR 0x80 123 124/* to access the interrupt control registers of CIA's use only 125** these functions, they behave exactly like the amiga os routines 126*/ 127 128extern struct ciabase ciaa_base, ciab_base; 129 130extern unsigned char cia_set_irq(struct ciabase *base, unsigned char mask); 131extern unsigned char cia_able_irq(struct ciabase *base, unsigned char mask); 132 133#endif /* asm-m68k/amigaints.h */ 134