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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 | ||
1d174cfb RZ |
16 | #include <asm/irq.h> |
17 | ||
1da177e4 LT |
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 | ||
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28 | /* builtin serial port interrupts */ |
29 | #define IRQ_AMIGA_TBE (IRQ_USER+0) | |
30 | #define IRQ_AMIGA_RBF (IRQ_USER+11) | |
1da177e4 | 31 | |
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32 | /* floppy disk interrupts */ |
33 | #define IRQ_AMIGA_DSKBLK (IRQ_USER+1) | |
34 | #define IRQ_AMIGA_DSKSYN (IRQ_USER+12) | |
1da177e4 | 35 | |
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36 | /* software interrupts */ |
37 | #define IRQ_AMIGA_SOFT (IRQ_USER+2) | |
1da177e4 | 38 | |
1d174cfb | 39 | /* interrupts from external hardware */ |
74be8d08 RZ |
40 | #define IRQ_AMIGA_PORTS IRQ_AUTO_2 |
41 | #define IRQ_AMIGA_EXTER IRQ_AUTO_6 | |
1da177e4 | 42 | |
1d174cfb RZ |
43 | /* copper interrupt */ |
44 | #define IRQ_AMIGA_COPPER (IRQ_USER+4) | |
1da177e4 | 45 | |
1d174cfb RZ |
46 | /* vertical blanking interrupt */ |
47 | #define IRQ_AMIGA_VERTB (IRQ_USER+5) | |
1da177e4 | 48 | |
1d174cfb RZ |
49 | /* Blitter done interrupt */ |
50 | #define IRQ_AMIGA_BLIT (IRQ_USER+6) | |
1da177e4 | 51 | |
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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) | |
1da177e4 LT |
57 | |
58 | /* CIA interrupt sources */ | |
1d174cfb RZ |
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) | |
1da177e4 | 71 | |
1da177e4 LT |
72 | |
73 | /* INTREQR masks */ | |
1da177e4 LT |
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 | ||
1da177e4 LT |
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 | /* to access the interrupt control registers of CIA's use only | |
102 | ** these functions, they behave exactly like the amiga os routines | |
103 | */ | |
104 | ||
105 | extern struct ciabase ciaa_base, ciab_base; | |
106 | ||
74be8d08 | 107 | extern void cia_init_IRQ(struct ciabase *base); |
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108 | extern unsigned char cia_set_irq(struct ciabase *base, unsigned char mask); |
109 | extern unsigned char cia_able_irq(struct ciabase *base, unsigned char mask); | |
110 | ||
111 | #endif /* asm-m68k/amigaints.h */ |