1 /* 2 ** amigaints.h -- Amiga Linux interrupt handling structs and prototypes 3 ** 4 ** Copyright 1992 by Greg Harp 5 ** 6 ** This file is subject to the terms and conditions of the GNU General Public 7 ** License. See the file COPYING in the main directory of this archive 8 ** for more details. 9 ** 10 ** Created 10/2/92 by Greg Harp 11 */ 12 13 #ifndef _ASMm68k_AMIGAINTS_H_ 14 #define _ASMm68k_AMIGAINTS_H_ 15 16 #include <asm/irq.h> 17 18 /* 19 ** Amiga Interrupt sources. 20 ** 21 */ 22 23 #define AUTO_IRQS (8) 24 #define AMI_STD_IRQS (14) 25 #define CIA_IRQS (5) 26 #define AMI_IRQS (32) /* AUTO_IRQS+AMI_STD_IRQS+2*CIA_IRQS */ 27 28 /* builtin serial port interrupts */ 29 #define IRQ_AMIGA_TBE (IRQ_USER+0) 30 #define IRQ_AMIGA_RBF (IRQ_USER+11) 31 32 /* floppy disk interrupts */ 33 #define IRQ_AMIGA_DSKBLK (IRQ_USER+1) 34 #define IRQ_AMIGA_DSKSYN (IRQ_USER+12) 35 36 /* software interrupts */ 37 #define IRQ_AMIGA_SOFT (IRQ_USER+2) 38 39 /* interrupts from external hardware */ 40 #define IRQ_AMIGA_PORTS IRQ_AUTO_2 41 #define IRQ_AMIGA_EXTER IRQ_AUTO_6 42 43 /* copper interrupt */ 44 #define IRQ_AMIGA_COPPER (IRQ_USER+4) 45 46 /* vertical blanking interrupt */ 47 #define IRQ_AMIGA_VERTB (IRQ_USER+5) 48 49 /* Blitter done interrupt */ 50 #define IRQ_AMIGA_BLIT (IRQ_USER+6) 51 52 /* Audio interrupts */ 53 #define IRQ_AMIGA_AUD0 (IRQ_USER+7) 54 #define IRQ_AMIGA_AUD1 (IRQ_USER+8) 55 #define IRQ_AMIGA_AUD2 (IRQ_USER+9) 56 #define IRQ_AMIGA_AUD3 (IRQ_USER+10) 57 58 /* CIA interrupt sources */ 59 #define IRQ_AMIGA_CIAA (IRQ_USER+14) 60 #define IRQ_AMIGA_CIAA_TA (IRQ_USER+14) 61 #define IRQ_AMIGA_CIAA_TB (IRQ_USER+15) 62 #define IRQ_AMIGA_CIAA_ALRM (IRQ_USER+16) 63 #define IRQ_AMIGA_CIAA_SP (IRQ_USER+17) 64 #define IRQ_AMIGA_CIAA_FLG (IRQ_USER+18) 65 #define IRQ_AMIGA_CIAB (IRQ_USER+19) 66 #define IRQ_AMIGA_CIAB_TA (IRQ_USER+19) 67 #define IRQ_AMIGA_CIAB_TB (IRQ_USER+20) 68 #define IRQ_AMIGA_CIAB_ALRM (IRQ_USER+21) 69 #define IRQ_AMIGA_CIAB_SP (IRQ_USER+22) 70 #define IRQ_AMIGA_CIAB_FLG (IRQ_USER+23) 71 72 73 /* INTREQR masks */ 74 #define IF_SETCLR 0x8000 /* set/clr bit */ 75 #define IF_INTEN 0x4000 /* master interrupt bit in INT* registers */ 76 #define IF_EXTER 0x2000 /* external level 6 and CIA B interrupt */ 77 #define IF_DSKSYN 0x1000 /* disk sync interrupt */ 78 #define IF_RBF 0x0800 /* serial receive buffer full interrupt */ 79 #define IF_AUD3 0x0400 /* audio channel 3 done interrupt */ 80 #define IF_AUD2 0x0200 /* audio channel 2 done interrupt */ 81 #define IF_AUD1 0x0100 /* audio channel 1 done interrupt */ 82 #define IF_AUD0 0x0080 /* audio channel 0 done interrupt */ 83 #define IF_BLIT 0x0040 /* blitter done interrupt */ 84 #define IF_VERTB 0x0020 /* vertical blanking interrupt */ 85 #define IF_COPER 0x0010 /* copper interrupt */ 86 #define IF_PORTS 0x0008 /* external level 2 and CIA A interrupt */ 87 #define IF_SOFT 0x0004 /* software initiated interrupt */ 88 #define IF_DSKBLK 0x0002 /* diskblock DMA finished */ 89 #define IF_TBE 0x0001 /* serial transmit buffer empty interrupt */ 90 91 /* CIA interrupt control register bits */ 92 93 #define CIA_ICR_TA 0x01 94 #define CIA_ICR_TB 0x02 95 #define CIA_ICR_ALRM 0x04 96 #define CIA_ICR_SP 0x08 97 #define CIA_ICR_FLG 0x10 98 #define CIA_ICR_ALL 0x1f 99 #define CIA_ICR_SETCLR 0x80 100 101 extern void amiga_init_IRQ(void); 102 103 /* to access the interrupt control registers of CIA's use only 104 ** these functions, they behave exactly like the amiga os routines 105 */ 106 107 extern struct ciabase ciaa_base, ciab_base; 108 109 extern void cia_init_IRQ(struct ciabase *base); 110 extern unsigned char cia_set_irq(struct ciabase *base, unsigned char mask); 111 extern unsigned char cia_able_irq(struct ciabase *base, unsigned char mask); 112 113 #endif /* asm-m68k/amigaints.h */ 114