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Linux kernel mirror (for testing)
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linux
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#ifdef __KERNEL__
14#ifndef _ASMm68k_AMIGAINTS_H_
15#define _ASMm68k_AMIGAINTS_H_
16
17/*
18** Amiga Interrupt sources.
19**
20*/
21
22#define AUTO_IRQS (8)
23#define AMI_STD_IRQS (14)
24#define CIA_IRQS (5)
25#define AMI_IRQS (32) /* AUTO_IRQS+AMI_STD_IRQS+2*CIA_IRQS */
26
27/* vertical blanking interrupt */
28#define IRQ_AMIGA_VERTB 0
29
30/* copper interrupt */
31#define IRQ_AMIGA_COPPER 1
32
33/* Audio interrupts */
34#define IRQ_AMIGA_AUD0 2
35#define IRQ_AMIGA_AUD1 3
36#define IRQ_AMIGA_AUD2 4
37#define IRQ_AMIGA_AUD3 5
38
39/* Blitter done interrupt */
40#define IRQ_AMIGA_BLIT 6
41
42/* floppy disk interrupts */
43#define IRQ_AMIGA_DSKSYN 7
44#define IRQ_AMIGA_DSKBLK 8
45
46/* builtin serial port interrupts */
47#define IRQ_AMIGA_RBF 9
48#define IRQ_AMIGA_TBE 10
49
50/* software interrupts */
51#define IRQ_AMIGA_SOFT 11
52
53/* interrupts from external hardware */
54#define IRQ_AMIGA_PORTS 12
55#define IRQ_AMIGA_EXTER 13
56
57/* CIA interrupt sources */
58#define IRQ_AMIGA_CIAA 14
59#define IRQ_AMIGA_CIAA_TA 14
60#define IRQ_AMIGA_CIAA_TB 15
61#define IRQ_AMIGA_CIAA_ALRM 16
62#define IRQ_AMIGA_CIAA_SP 17
63#define IRQ_AMIGA_CIAA_FLG 18
64#define IRQ_AMIGA_CIAB 19
65#define IRQ_AMIGA_CIAB_TA 19
66#define IRQ_AMIGA_CIAB_TB 20
67#define IRQ_AMIGA_CIAB_ALRM 21
68#define IRQ_AMIGA_CIAB_SP 22
69#define IRQ_AMIGA_CIAB_FLG 23
70
71/* auto-vector interrupts */
72#define IRQ_AMIGA_AUTO 24
73#define IRQ_AMIGA_AUTO_0 24 /* This is just a dummy */
74#define IRQ_AMIGA_AUTO_1 25
75#define IRQ_AMIGA_AUTO_2 26
76#define IRQ_AMIGA_AUTO_3 27
77#define IRQ_AMIGA_AUTO_4 28
78#define IRQ_AMIGA_AUTO_5 29
79#define IRQ_AMIGA_AUTO_6 30
80#define IRQ_AMIGA_AUTO_7 31
81
82#define IRQ_FLOPPY IRQ_AMIGA_DSKBLK
83
84/* INTREQR masks */
85#define IRQ1_MASK 0x0007 /* INTREQR mask for IRQ 1 */
86#define IRQ2_MASK 0x0008 /* INTREQR mask for IRQ 2 */
87#define IRQ3_MASK 0x0070 /* INTREQR mask for IRQ 3 */
88#define IRQ4_MASK 0x0780 /* INTREQR mask for IRQ 4 */
89#define IRQ5_MASK 0x1800 /* INTREQR mask for IRQ 5 */
90#define IRQ6_MASK 0x2000 /* INTREQR mask for IRQ 6 */
91#define IRQ7_MASK 0x4000 /* INTREQR mask for IRQ 7 */
92
93#define IF_SETCLR 0x8000 /* set/clr bit */
94#define IF_INTEN 0x4000 /* master interrupt bit in INT* registers */
95#define IF_EXTER 0x2000 /* external level 6 and CIA B interrupt */
96#define IF_DSKSYN 0x1000 /* disk sync interrupt */
97#define IF_RBF 0x0800 /* serial receive buffer full interrupt */
98#define IF_AUD3 0x0400 /* audio channel 3 done interrupt */
99#define IF_AUD2 0x0200 /* audio channel 2 done interrupt */
100#define IF_AUD1 0x0100 /* audio channel 1 done interrupt */
101#define IF_AUD0 0x0080 /* audio channel 0 done interrupt */
102#define IF_BLIT 0x0040 /* blitter done interrupt */
103#define IF_VERTB 0x0020 /* vertical blanking interrupt */
104#define IF_COPER 0x0010 /* copper interrupt */
105#define IF_PORTS 0x0008 /* external level 2 and CIA A interrupt */
106#define IF_SOFT 0x0004 /* software initiated interrupt */
107#define IF_DSKBLK 0x0002 /* diskblock DMA finished */
108#define IF_TBE 0x0001 /* serial transmit buffer empty interrupt */
109
110extern void amiga_do_irq(int irq, struct pt_regs *fp);
111extern void amiga_do_irq_list(int irq, struct pt_regs *fp);
112
113/* CIA interrupt control register bits */
114
115#define CIA_ICR_TA 0x01
116#define CIA_ICR_TB 0x02
117#define CIA_ICR_ALRM 0x04
118#define CIA_ICR_SP 0x08
119#define CIA_ICR_FLG 0x10
120#define CIA_ICR_ALL 0x1f
121#define CIA_ICR_SETCLR 0x80
122
123/* to access the interrupt control registers of CIA's use only
124** these functions, they behave exactly like the amiga os routines
125*/
126
127extern struct ciabase ciaa_base, ciab_base;
128
129extern unsigned char cia_set_irq(unsigned int irq, int set);
130extern unsigned char cia_able_irq(unsigned int irq, int enable);
131
132#endif /* asm-m68k/amigaints.h */
133#endif /* __KERNEL__ */