blob: 35bc3e18ed63a4931e14c1269aefb38ab9d0fdf3 (
plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
|
/*
** 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 AUTO_IRQS (8)
#define AMI_STD_IRQS (14)
#define CIA_IRQS (5)
#define AMI_IRQS (32) /* AUTO_IRQS+AMI_STD_IRQS+2*CIA_IRQS */
/* vertical blanking interrupt */
#define IRQ_AMIGA_VERTB 0
/* copper interrupt */
#define IRQ_AMIGA_COPPER 1
/* Audio interrupts */
#define IRQ_AMIGA_AUD0 2
#define IRQ_AMIGA_AUD1 3
#define IRQ_AMIGA_AUD2 4
#define IRQ_AMIGA_AUD3 5
/* Blitter done interrupt */
#define IRQ_AMIGA_BLIT 6
/* floppy disk interrupts */
#define IRQ_AMIGA_DSKSYN 7
#define IRQ_AMIGA_DSKBLK 8
/* builtin serial port interrupts */
#define IRQ_AMIGA_RBF 9
#define IRQ_AMIGA_TBE 10
/* software interrupts */
#define IRQ_AMIGA_SOFT 11
/* interrupts from external hardware */
#define IRQ_AMIGA_PORTS 12
#define IRQ_AMIGA_EXTER 13
/* CIA interrupt sources */
#define IRQ_AMIGA_CIAA 14
#define IRQ_AMIGA_CIAA_TA 14
#define IRQ_AMIGA_CIAA_TB 15
#define IRQ_AMIGA_CIAA_ALRM 16
#define IRQ_AMIGA_CIAA_SP 17
#define IRQ_AMIGA_CIAA_FLG 18
#define IRQ_AMIGA_CIAB 19
#define IRQ_AMIGA_CIAB_TA 19
#define IRQ_AMIGA_CIAB_TB 20
#define IRQ_AMIGA_CIAB_ALRM 21
#define IRQ_AMIGA_CIAB_SP 22
#define IRQ_AMIGA_CIAB_FLG 23
/* auto-vector interrupts */
#define IRQ_AMIGA_AUTO 24
#define IRQ_AMIGA_AUTO_0 24 /* This is just a dummy */
#define IRQ_AMIGA_AUTO_1 25
#define IRQ_AMIGA_AUTO_2 26
#define IRQ_AMIGA_AUTO_3 27
#define IRQ_AMIGA_AUTO_4 28
#define IRQ_AMIGA_AUTO_5 29
#define IRQ_AMIGA_AUTO_6 30
#define IRQ_AMIGA_AUTO_7 31
#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);
extern unsigned short amiga_intena_vals[];
/* 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 */
|
