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Diffstat (limited to 'include/asm-m68k/amigaints.h')
| -rw-r--r-- | include/asm-m68k/amigaints.h | 123 |
1 files changed, 123 insertions, 0 deletions
diff --git a/include/asm-m68k/amigaints.h b/include/asm-m68k/amigaints.h new file mode 100644 index 000000000..0c225ee7c --- /dev/null +++ b/include/asm-m68k/amigaints.h @@ -0,0 +1,123 @@ +/* +** 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 */ |