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/*
** 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_
/*
** Amiga Interrupt sources.
**
*/
#define AMI_IRQS (24)
#define AMI_STD_IRQS (14)
#define CIA_IRQS (5)
/* vertical blanking interrupt */
#define IRQ_AMIGA_VERTB (IRQ_MACHSPEC | 0)
/* copper interrupt */
#define IRQ_AMIGA_COPPER (IRQ_MACHSPEC | 1)
/* Audio interrupts */
#define IRQ_AMIGA_AUD0 (IRQ_MACHSPEC | 2)
#define IRQ_AMIGA_AUD1 (IRQ_MACHSPEC | 3)
#define IRQ_AMIGA_AUD2 (IRQ_MACHSPEC | 4)
#define IRQ_AMIGA_AUD3 (IRQ_MACHSPEC | 5)
/* Blitter done interrupt */
#define IRQ_AMIGA_BLIT (IRQ_MACHSPEC | 6)
/* floppy disk interrupts */
#define IRQ_AMIGA_DSKSYN (IRQ_MACHSPEC | 7)
#define IRQ_AMIGA_DSKBLK (IRQ_MACHSPEC | 8)
/* builtin serial port interrupts */
#define IRQ_AMIGA_RBF (IRQ_MACHSPEC | 9)
#define IRQ_AMIGA_TBE (IRQ_MACHSPEC | 10)
/* software interrupts */
#define IRQ_AMIGA_SOFT (IRQ_MACHSPEC | 11)
/* interrupts from external hardware */
#define IRQ_AMIGA_PORTS (IRQ_MACHSPEC | 12)
#define IRQ_AMIGA_EXTER (IRQ_MACHSPEC | 13)
/* CIA interrupt sources */
#define IRQ_AMIGA_CIAA (IRQ_MACHSPEC | 14)
#define IRQ_AMIGA_CIAA_TA (IRQ_MACHSPEC | 14)
#define IRQ_AMIGA_CIAA_TB (IRQ_MACHSPEC | 15)
#define IRQ_AMIGA_CIAA_ALRM (IRQ_MACHSPEC | 16)
#define IRQ_AMIGA_CIAA_SP (IRQ_MACHSPEC | 17)
#define IRQ_AMIGA_CIAA_FLG (IRQ_MACHSPEC | 18)
#define IRQ_AMIGA_CIAB (IRQ_MACHSPEC | 19)
#define IRQ_AMIGA_CIAB_TA (IRQ_MACHSPEC | 19)
#define IRQ_AMIGA_CIAB_TB (IRQ_MACHSPEC | 20)
#define IRQ_AMIGA_CIAB_ALRM (IRQ_MACHSPEC | 21)
#define IRQ_AMIGA_CIAB_SP (IRQ_MACHSPEC | 22)
#define IRQ_AMIGA_CIAB_FLG (IRQ_MACHSPEC | 23)
#define IRQ_FLOPPY IRQ_AMIGA_DSKBLK
/* INTREQR masks */
#define IRQ1_MASK 0x0007 /* INTREQR mask for IRQ 1 */
#define IRQ2_MASK 0x0008 /* INTREQR mask for IRQ 2 */
#define IRQ3_MASK 0x0070 /* INTREQR mask for IRQ 3 */
#define IRQ4_MASK 0x0780 /* INTREQR mask for IRQ 4 */
#define IRQ5_MASK 0x1800 /* INTREQR mask for IRQ 5 */
#define IRQ6_MASK 0x2000 /* INTREQR mask for IRQ 6 */
#define IRQ7_MASK 0x4000 /* INTREQR mask for IRQ 7 */
#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 */
struct irq_server {
unsigned short count, reentrance;
};
extern void amiga_do_irq(int irq, struct pt_regs *fp);
extern void amiga_do_irq_list(int irq, struct pt_regs *fp, struct irq_server *server);
/* 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
/* 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 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 */
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