| /* |
| ** 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 */ |
