114 lines
3.5 KiB
C
114 lines
3.5 KiB
C
|
/*
|
||
|
|
** amigaints.h -- Amiga Linux interrupt handling structs and prototypes
|
||
|
|
**
|
||
|
|
** Copyright 1992 by Greg Harp
|
||
|
|
**
|
||
|
|
** This file is subject to the terms and conditions of the GNU General Public
|
||
|
|
** License. See the file COPYING in the main directory of this archive
|
||
|
|
** for more details.
|
||
|
|
**
|
||
|
|
** Created 10/2/92 by Greg Harp
|
||
|
|
*/
|
||
|
|
|
||
|
|
#ifndef _ASMm68k_AMIGAINTS_H_
|
||
|
|
#define _ASMm68k_AMIGAINTS_H_
|
||
|
|
|
||
|
|
#include <asm/irq.h>
|
||
|
|
|
||
|
|
/*
|
||
|
|
** Amiga Interrupt sources.
|
||
|
|
**
|
||
|
|
*/
|
||
|
|
|
||
|
|
#define AUTO_IRQS (8)
|
||
|
|
#define AMI_STD_IRQS (14)
|
||
|
|
#define CIA_IRQS (5)
|
||
|
|
#define AMI_IRQS (32) /* AUTO_IRQS+AMI_STD_IRQS+2*CIA_IRQS */
|
||
|
|
|
||
|
|
/* builtin serial port interrupts */
|
||
|
|
#define IRQ_AMIGA_TBE (IRQ_USER+0)
|
||
|
|
#define IRQ_AMIGA_RBF (IRQ_USER+11)
|
||
|
|
|
||
|
|
/* floppy disk interrupts */
|
||
|
|
#define IRQ_AMIGA_DSKBLK (IRQ_USER+1)
|
||
|
|
#define IRQ_AMIGA_DSKSYN (IRQ_USER+12)
|
||
|
|
|
||
|
|
/* software interrupts */
|
||
|
|
#define IRQ_AMIGA_SOFT (IRQ_USER+2)
|
||
|
|
|
||
|
|
/* interrupts from external hardware */
|
||
|
|
#define IRQ_AMIGA_PORTS IRQ_AUTO_2
|
||
|
|
#define IRQ_AMIGA_EXTER IRQ_AUTO_6
|
||
|
|
|
||
|
|
/* copper interrupt */
|
||
|
|
#define IRQ_AMIGA_COPPER (IRQ_USER+4)
|
||
|
|
|
||
|
|
/* vertical blanking interrupt */
|
||
|
|
#define IRQ_AMIGA_VERTB (IRQ_USER+5)
|
||
|
|
|
||
|
|
/* Blitter done interrupt */
|
||
|
|
#define IRQ_AMIGA_BLIT (IRQ_USER+6)
|
||
|
|
|
||
|
|
/* Audio interrupts */
|
||
|
|
#define IRQ_AMIGA_AUD0 (IRQ_USER+7)
|
||
|
|
#define IRQ_AMIGA_AUD1 (IRQ_USER+8)
|
||
|
|
#define IRQ_AMIGA_AUD2 (IRQ_USER+9)
|
||
|
|
#define IRQ_AMIGA_AUD3 (IRQ_USER+10)
|
||
|
|
|
||
|
|
/* CIA interrupt sources */
|
||
|
|
#define IRQ_AMIGA_CIAA (IRQ_USER+14)
|
||
|
|
#define IRQ_AMIGA_CIAA_TA (IRQ_USER+14)
|
||
|
|
#define IRQ_AMIGA_CIAA_TB (IRQ_USER+15)
|
||
|
|
#define IRQ_AMIGA_CIAA_ALRM (IRQ_USER+16)
|
||
|
|
#define IRQ_AMIGA_CIAA_SP (IRQ_USER+17)
|
||
|
|
#define IRQ_AMIGA_CIAA_FLG (IRQ_USER+18)
|
||
|
|
#define IRQ_AMIGA_CIAB (IRQ_USER+19)
|
||
|
|
#define IRQ_AMIGA_CIAB_TA (IRQ_USER+19)
|
||
|
|
#define IRQ_AMIGA_CIAB_TB (IRQ_USER+20)
|
||
|
|
#define IRQ_AMIGA_CIAB_ALRM (IRQ_USER+21)
|
||
|
|
#define IRQ_AMIGA_CIAB_SP (IRQ_USER+22)
|
||
|
|
#define IRQ_AMIGA_CIAB_FLG (IRQ_USER+23)
|
||
|
|
|
||
|
|
|
||
|
|
/* INTREQR masks */
|
||
|
|
#define IF_SETCLR 0x8000 /* set/clr bit */
|
||
|
|
#define IF_INTEN 0x4000 /* master interrupt bit in INT* registers */
|
||
|
|
#define IF_EXTER 0x2000 /* external level 6 and CIA B interrupt */
|
||
|
|
#define IF_DSKSYN 0x1000 /* disk sync interrupt */
|
||
|
|
#define IF_RBF 0x0800 /* serial receive buffer full interrupt */
|
||
|
|
#define IF_AUD3 0x0400 /* audio channel 3 done interrupt */
|
||
|
|
#define IF_AUD2 0x0200 /* audio channel 2 done interrupt */
|
||
|
|
#define IF_AUD1 0x0100 /* audio channel 1 done interrupt */
|
||
|
|
#define IF_AUD0 0x0080 /* audio channel 0 done interrupt */
|
||
|
|
#define IF_BLIT 0x0040 /* blitter done interrupt */
|
||
|
|
#define IF_VERTB 0x0020 /* vertical blanking interrupt */
|
||
|
|
#define IF_COPER 0x0010 /* copper interrupt */
|
||
|
|
#define IF_PORTS 0x0008 /* external level 2 and CIA A interrupt */
|
||
|
|
#define IF_SOFT 0x0004 /* software initiated interrupt */
|
||
|
|
#define IF_DSKBLK 0x0002 /* diskblock DMA finished */
|
||
|
|
#define IF_TBE 0x0001 /* serial transmit buffer empty interrupt */
|
||
|
|
|
||
|
|
/* CIA interrupt control register bits */
|
||
|
|
|
||
|
|
#define CIA_ICR_TA 0x01
|
||
|
|
#define CIA_ICR_TB 0x02
|
||
|
|
#define CIA_ICR_ALRM 0x04
|
||
|
|
#define CIA_ICR_SP 0x08
|
||
|
|
#define CIA_ICR_FLG 0x10
|
||
|
|
#define CIA_ICR_ALL 0x1f
|
||
|
|
#define CIA_ICR_SETCLR 0x80
|
||
|
|
|
||
|
|
extern void amiga_init_IRQ(void);
|
||
|
|
|
||
|
|
/* to access the interrupt control registers of CIA's use only
|
||
|
|
** these functions, they behave exactly like the amiga os routines
|
||
|
|
*/
|
||
|
|
|
||
|
|
extern struct ciabase ciaa_base, ciab_base;
|
||
|
|
|
||
|
|
extern void cia_init_IRQ(struct ciabase *base);
|
||
|
|
extern unsigned char cia_set_irq(struct ciabase *base, unsigned char mask);
|
||
|
|
extern unsigned char cia_able_irq(struct ciabase *base, unsigned char mask);
|
||
|
|
|
||
|
|
#endif /* asm-m68k/amigaints.h */
|