132 lines
4 KiB
C
132 lines
4 KiB
C
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/*
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** amigaints.h -- Amiga Linux interrupt handling structs and prototypes
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**
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** Copyright 1992 by Greg Harp
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**
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** This file is subject to the terms and conditions of the GNU General Public
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** License. See the file COPYING in the main directory of this archive
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** for more details.
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**
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** Created 10/2/92 by Greg Harp
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*/
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#ifndef _ASMm68k_AMIGAINTS_H_
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#define _ASMm68k_AMIGAINTS_H_
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/*
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** Amiga Interrupt sources.
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**
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*/
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#define AUTO_IRQS (8)
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#define AMI_STD_IRQS (14)
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#define CIA_IRQS (5)
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#define AMI_IRQS (32) /* AUTO_IRQS+AMI_STD_IRQS+2*CIA_IRQS */
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/* vertical blanking interrupt */
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#define IRQ_AMIGA_VERTB 0
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/* copper interrupt */
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#define IRQ_AMIGA_COPPER 1
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/* Audio interrupts */
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#define IRQ_AMIGA_AUD0 2
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#define IRQ_AMIGA_AUD1 3
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#define IRQ_AMIGA_AUD2 4
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#define IRQ_AMIGA_AUD3 5
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/* Blitter done interrupt */
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#define IRQ_AMIGA_BLIT 6
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/* floppy disk interrupts */
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#define IRQ_AMIGA_DSKSYN 7
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#define IRQ_AMIGA_DSKBLK 8
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/* builtin serial port interrupts */
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#define IRQ_AMIGA_RBF 9
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#define IRQ_AMIGA_TBE 10
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/* software interrupts */
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#define IRQ_AMIGA_SOFT 11
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/* interrupts from external hardware */
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#define IRQ_AMIGA_PORTS 12
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#define IRQ_AMIGA_EXTER 13
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/* CIA interrupt sources */
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#define IRQ_AMIGA_CIAA 14
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#define IRQ_AMIGA_CIAA_TA 14
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#define IRQ_AMIGA_CIAA_TB 15
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#define IRQ_AMIGA_CIAA_ALRM 16
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#define IRQ_AMIGA_CIAA_SP 17
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#define IRQ_AMIGA_CIAA_FLG 18
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#define IRQ_AMIGA_CIAB 19
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#define IRQ_AMIGA_CIAB_TA 19
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#define IRQ_AMIGA_CIAB_TB 20
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#define IRQ_AMIGA_CIAB_ALRM 21
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#define IRQ_AMIGA_CIAB_SP 22
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#define IRQ_AMIGA_CIAB_FLG 23
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/* auto-vector interrupts */
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#define IRQ_AMIGA_AUTO 24
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#define IRQ_AMIGA_AUTO_0 24 /* This is just a dummy */
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#define IRQ_AMIGA_AUTO_1 25
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#define IRQ_AMIGA_AUTO_2 26
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#define IRQ_AMIGA_AUTO_3 27
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#define IRQ_AMIGA_AUTO_4 28
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#define IRQ_AMIGA_AUTO_5 29
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#define IRQ_AMIGA_AUTO_6 30
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#define IRQ_AMIGA_AUTO_7 31
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#define IRQ_FLOPPY IRQ_AMIGA_DSKBLK
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/* INTREQR masks */
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#define IRQ1_MASK 0x0007 /* INTREQR mask for IRQ 1 */
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#define IRQ2_MASK 0x0008 /* INTREQR mask for IRQ 2 */
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#define IRQ3_MASK 0x0070 /* INTREQR mask for IRQ 3 */
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#define IRQ4_MASK 0x0780 /* INTREQR mask for IRQ 4 */
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#define IRQ5_MASK 0x1800 /* INTREQR mask for IRQ 5 */
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#define IRQ6_MASK 0x2000 /* INTREQR mask for IRQ 6 */
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#define IRQ7_MASK 0x4000 /* INTREQR mask for IRQ 7 */
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#define IF_SETCLR 0x8000 /* set/clr bit */
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#define IF_INTEN 0x4000 /* master interrupt bit in INT* registers */
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#define IF_EXTER 0x2000 /* external level 6 and CIA B interrupt */
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#define IF_DSKSYN 0x1000 /* disk sync interrupt */
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#define IF_RBF 0x0800 /* serial receive buffer full interrupt */
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#define IF_AUD3 0x0400 /* audio channel 3 done interrupt */
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#define IF_AUD2 0x0200 /* audio channel 2 done interrupt */
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#define IF_AUD1 0x0100 /* audio channel 1 done interrupt */
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#define IF_AUD0 0x0080 /* audio channel 0 done interrupt */
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#define IF_BLIT 0x0040 /* blitter done interrupt */
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#define IF_VERTB 0x0020 /* vertical blanking interrupt */
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#define IF_COPER 0x0010 /* copper interrupt */
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#define IF_PORTS 0x0008 /* external level 2 and CIA A interrupt */
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#define IF_SOFT 0x0004 /* software initiated interrupt */
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#define IF_DSKBLK 0x0002 /* diskblock DMA finished */
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#define IF_TBE 0x0001 /* serial transmit buffer empty interrupt */
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extern void amiga_do_irq(int irq, struct pt_regs *fp);
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extern void amiga_do_irq_list(int irq, struct pt_regs *fp);
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/* CIA interrupt control register bits */
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#define CIA_ICR_TA 0x01
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#define CIA_ICR_TB 0x02
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#define CIA_ICR_ALRM 0x04
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#define CIA_ICR_SP 0x08
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#define CIA_ICR_FLG 0x10
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#define CIA_ICR_ALL 0x1f
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#define CIA_ICR_SETCLR 0x80
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/* to access the interrupt control registers of CIA's use only
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** these functions, they behave exactly like the amiga os routines
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*/
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extern struct ciabase ciaa_base, ciab_base;
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extern unsigned char cia_set_irq(struct ciabase *base, unsigned char mask);
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extern unsigned char cia_able_irq(struct ciabase *base, unsigned char mask);
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#endif /* asm-m68k/amigaints.h */
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