summaryrefslogtreecommitdiffstats
path: root/include/asm-m68k/amigaints.h
blob: 2aff4cfbf7b3837013f4f3b94a177f52a41f2028 (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
/*
** 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 */

extern void amiga_do_irq(int irq, struct pt_regs *fp);
extern void amiga_do_irq_list(int irq, struct pt_regs *fp);

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 */