1/*
2 * BK Id: %F% %I% %G% %U% %#%
3 */
4/*
5** amigaints.h -- Amiga Linux interrupt handling structs and prototypes
6**
7** Copyright 1992 by Greg Harp
8**
9** This file is subject to the terms and conditions of the GNU General Public
10** License.  See the file COPYING in the main directory of this archive
11** for more details.
12**
13** Created 10/2/92 by Greg Harp
14*/
15
16#ifdef __KERNEL__
17#ifndef _ASMm68k_AMIGAINTS_H_
18#define _ASMm68k_AMIGAINTS_H_
19
20/*
21** Amiga Interrupt sources.
22**
23*/
24
25#define AUTO_IRQS           (8)
26#define AMI_STD_IRQS        (14)
27#define CIA_IRQS            (5)
28#define AMI_IRQS            (32) /* AUTO_IRQS+AMI_STD_IRQS+2*CIA_IRQS */
29
30/* vertical blanking interrupt */
31#define IRQ_AMIGA_VERTB     0
32
33/* copper interrupt */
34#define IRQ_AMIGA_COPPER    1
35
36/* Audio interrupts */
37#define IRQ_AMIGA_AUD0	    2
38#define IRQ_AMIGA_AUD1	    3
39#define IRQ_AMIGA_AUD2	    4
40#define IRQ_AMIGA_AUD3	    5
41
42/* Blitter done interrupt */
43#define IRQ_AMIGA_BLIT	    6
44
45/* floppy disk interrupts */
46#define IRQ_AMIGA_DSKSYN    7
47#define IRQ_AMIGA_DSKBLK    8
48
49/* builtin serial port interrupts */
50#define IRQ_AMIGA_RBF	    9
51#define IRQ_AMIGA_TBE	    10
52
53/* software interrupts */
54#define IRQ_AMIGA_SOFT      11
55
56/* interrupts from external hardware */
57#define IRQ_AMIGA_PORTS	    12
58#define IRQ_AMIGA_EXTER	    13
59
60/* CIA interrupt sources */
61#define IRQ_AMIGA_CIAA      14
62#define IRQ_AMIGA_CIAA_TA   14
63#define IRQ_AMIGA_CIAA_TB   15
64#define IRQ_AMIGA_CIAA_ALRM 16
65#define IRQ_AMIGA_CIAA_SP   17
66#define IRQ_AMIGA_CIAA_FLG  18
67#define IRQ_AMIGA_CIAB      19
68#define IRQ_AMIGA_CIAB_TA   19
69#define IRQ_AMIGA_CIAB_TB   20
70#define IRQ_AMIGA_CIAB_ALRM 21
71#define IRQ_AMIGA_CIAB_SP   22
72#define IRQ_AMIGA_CIAB_FLG  23
73
74/* auto-vector interrupts */
75#define IRQ_AMIGA_AUTO      24
76#define IRQ_AMIGA_AUTO_0    24 /* This is just a dummy */
77#define IRQ_AMIGA_AUTO_1    25
78#define IRQ_AMIGA_AUTO_2    26
79#define IRQ_AMIGA_AUTO_3    27
80#define IRQ_AMIGA_AUTO_4    28
81#define IRQ_AMIGA_AUTO_5    29
82#define IRQ_AMIGA_AUTO_6    30
83#define IRQ_AMIGA_AUTO_7    31
84
85#define IRQ_FLOPPY	    IRQ_AMIGA_DSKBLK
86
87/* INTREQR masks */
88#define IRQ1_MASK   0x0007	/* INTREQR mask for IRQ 1 */
89#define IRQ2_MASK   0x0008	/* INTREQR mask for IRQ 2 */
90#define IRQ3_MASK   0x0070	/* INTREQR mask for IRQ 3 */
91#define IRQ4_MASK   0x0780	/* INTREQR mask for IRQ 4 */
92#define IRQ5_MASK   0x1800	/* INTREQR mask for IRQ 5 */
93#define IRQ6_MASK   0x2000	/* INTREQR mask for IRQ 6 */
94#define IRQ7_MASK   0x4000	/* INTREQR mask for IRQ 7 */
95
96#define IF_SETCLR   0x8000      /* set/clr bit */
97#define IF_INTEN    0x4000	/* master interrupt bit in INT* registers */
98#define IF_EXTER    0x2000	/* external level 6 and CIA B interrupt */
99#define IF_DSKSYN   0x1000	/* disk sync interrupt */
100#define IF_RBF	    0x0800	/* serial receive buffer full interrupt */
101#define IF_AUD3     0x0400	/* audio channel 3 done interrupt */
102#define IF_AUD2     0x0200	/* audio channel 2 done interrupt */
103#define IF_AUD1     0x0100	/* audio channel 1 done interrupt */
104#define IF_AUD0     0x0080	/* audio channel 0 done interrupt */
105#define IF_BLIT     0x0040	/* blitter done interrupt */
106#define IF_VERTB    0x0020	/* vertical blanking interrupt */
107#define IF_COPER    0x0010	/* copper interrupt */
108#define IF_PORTS    0x0008	/* external level 2 and CIA A interrupt */
109#define IF_SOFT     0x0004	/* software initiated interrupt */
110#define IF_DSKBLK   0x0002	/* diskblock DMA finished */
111#define IF_TBE	    0x0001	/* serial transmit buffer empty interrupt */
112
113extern void amiga_do_irq(int irq, struct pt_regs *fp);
114extern void amiga_do_irq_list(int irq, struct pt_regs *fp);
115
116/* CIA interrupt control register bits */
117
118#define CIA_ICR_TA	0x01
119#define CIA_ICR_TB	0x02
120#define CIA_ICR_ALRM	0x04
121#define CIA_ICR_SP	0x08
122#define CIA_ICR_FLG	0x10
123#define CIA_ICR_ALL	0x1f
124#define CIA_ICR_SETCLR	0x80
125
126/* to access the interrupt control registers of CIA's use only
127** these functions, they behave exactly like the amiga os routines
128*/
129
130extern struct ciabase ciaa_base, ciab_base;
131
132extern unsigned char cia_set_irq(unsigned int irq, int set);
133extern unsigned char cia_able_irq(unsigned int irq, int enable);
134
135#endif /* asm-m68k/amigaints.h */
136#endif /* __KERNEL__ */
137