Book a Demo!
CoCalc Logo Icon
StoreFeaturesDocsShareSupportNewsAboutPoliciesSign UpSign In
awilliam
GitHub Repository: awilliam/linux-vfio
 Path: blob/master/arch/m68k/include/asm/amigaints.h
10820 views
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


16
#include <asm/irq.h>

17


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


28
/* builtin serial port interrupts */

29
#define IRQ_AMIGA_TBE		(IRQ_USER+0)

30
#define IRQ_AMIGA_RBF		(IRQ_USER+11)

31


32
/* floppy disk interrupts */

33
#define IRQ_AMIGA_DSKBLK	(IRQ_USER+1)

34
#define IRQ_AMIGA_DSKSYN	(IRQ_USER+12)

35


36
/* software interrupts */

37
#define IRQ_AMIGA_SOFT		(IRQ_USER+2)

38


39
/* interrupts from external hardware */

40
#define IRQ_AMIGA_PORTS		IRQ_AUTO_2

41
#define IRQ_AMIGA_EXTER		IRQ_AUTO_6

42


43
/* copper interrupt */

44
#define IRQ_AMIGA_COPPER	(IRQ_USER+4)

45


46
/* vertical blanking interrupt */

47
#define IRQ_AMIGA_VERTB		(IRQ_USER+5)

48


49
/* Blitter done interrupt */

50
#define IRQ_AMIGA_BLIT		(IRQ_USER+6)

51


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)

57


58
/* CIA interrupt sources */

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)

71


72


73
/* INTREQR masks */

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


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
extern void amiga_init_IRQ(void);

102


103
/* to access the interrupt control registers of CIA's use only

104
** these functions, they behave exactly like the amiga os routines

105
*/

106


107
extern struct ciabase ciaa_base, ciab_base;

108


109
extern void cia_init_IRQ(struct ciabase *base);

110
extern unsigned char cia_set_irq(struct ciabase *base, unsigned char mask);

111
extern unsigned char cia_able_irq(struct ciabase *base, unsigned char mask);

112


113
#endif /* asm-m68k/amigaints.h */

114


115