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1da177e4 LT |
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 | /* | |
17 | ** Amiga Interrupt sources. | |
18 | ** | |
19 | */ | |
20 | ||
21 | #define AUTO_IRQS (8) | |
22 | #define AMI_STD_IRQS (14) | |
23 | #define CIA_IRQS (5) | |
24 | #define AMI_IRQS (32) /* AUTO_IRQS+AMI_STD_IRQS+2*CIA_IRQS */ | |
25 | ||
26 | /* vertical blanking interrupt */ | |
27 | #define IRQ_AMIGA_VERTB 0 | |
28 | ||
29 | /* copper interrupt */ | |
30 | #define IRQ_AMIGA_COPPER 1 | |
31 | ||
32 | /* Audio interrupts */ | |
33 | #define IRQ_AMIGA_AUD0 2 | |
34 | #define IRQ_AMIGA_AUD1 3 | |
35 | #define IRQ_AMIGA_AUD2 4 | |
36 | #define IRQ_AMIGA_AUD3 5 | |
37 | ||
38 | /* Blitter done interrupt */ | |
39 | #define IRQ_AMIGA_BLIT 6 | |
40 | ||
41 | /* floppy disk interrupts */ | |
42 | #define IRQ_AMIGA_DSKSYN 7 | |
43 | #define IRQ_AMIGA_DSKBLK 8 | |
44 | ||
45 | /* builtin serial port interrupts */ | |
46 | #define IRQ_AMIGA_RBF 9 | |
47 | #define IRQ_AMIGA_TBE 10 | |
48 | ||
49 | /* software interrupts */ | |
50 | #define IRQ_AMIGA_SOFT 11 | |
51 | ||
52 | /* interrupts from external hardware */ | |
53 | #define IRQ_AMIGA_PORTS 12 | |
54 | #define IRQ_AMIGA_EXTER 13 | |
55 | ||
56 | /* CIA interrupt sources */ | |
57 | #define IRQ_AMIGA_CIAA 14 | |
58 | #define IRQ_AMIGA_CIAA_TA 14 | |
59 | #define IRQ_AMIGA_CIAA_TB 15 | |
60 | #define IRQ_AMIGA_CIAA_ALRM 16 | |
61 | #define IRQ_AMIGA_CIAA_SP 17 | |
62 | #define IRQ_AMIGA_CIAA_FLG 18 | |
63 | #define IRQ_AMIGA_CIAB 19 | |
64 | #define IRQ_AMIGA_CIAB_TA 19 | |
65 | #define IRQ_AMIGA_CIAB_TB 20 | |
66 | #define IRQ_AMIGA_CIAB_ALRM 21 | |
67 | #define IRQ_AMIGA_CIAB_SP 22 | |
68 | #define IRQ_AMIGA_CIAB_FLG 23 | |
69 | ||
70 | /* auto-vector interrupts */ | |
71 | #define IRQ_AMIGA_AUTO 24 | |
72 | #define IRQ_AMIGA_AUTO_0 24 /* This is just a dummy */ | |
73 | #define IRQ_AMIGA_AUTO_1 25 | |
74 | #define IRQ_AMIGA_AUTO_2 26 | |
75 | #define IRQ_AMIGA_AUTO_3 27 | |
76 | #define IRQ_AMIGA_AUTO_4 28 | |
77 | #define IRQ_AMIGA_AUTO_5 29 | |
78 | #define IRQ_AMIGA_AUTO_6 30 | |
79 | #define IRQ_AMIGA_AUTO_7 31 | |
80 | ||
81 | #define IRQ_FLOPPY IRQ_AMIGA_DSKBLK | |
82 | ||
83 | /* INTREQR masks */ | |
84 | #define IRQ1_MASK 0x0007 /* INTREQR mask for IRQ 1 */ | |
85 | #define IRQ2_MASK 0x0008 /* INTREQR mask for IRQ 2 */ | |
86 | #define IRQ3_MASK 0x0070 /* INTREQR mask for IRQ 3 */ | |
87 | #define IRQ4_MASK 0x0780 /* INTREQR mask for IRQ 4 */ | |
88 | #define IRQ5_MASK 0x1800 /* INTREQR mask for IRQ 5 */ | |
89 | #define IRQ6_MASK 0x2000 /* INTREQR mask for IRQ 6 */ | |
90 | #define IRQ7_MASK 0x4000 /* INTREQR mask for IRQ 7 */ | |
91 | ||
92 | #define IF_SETCLR 0x8000 /* set/clr bit */ | |
93 | #define IF_INTEN 0x4000 /* master interrupt bit in INT* registers */ | |
94 | #define IF_EXTER 0x2000 /* external level 6 and CIA B interrupt */ | |
95 | #define IF_DSKSYN 0x1000 /* disk sync interrupt */ | |
96 | #define IF_RBF 0x0800 /* serial receive buffer full interrupt */ | |
97 | #define IF_AUD3 0x0400 /* audio channel 3 done interrupt */ | |
98 | #define IF_AUD2 0x0200 /* audio channel 2 done interrupt */ | |
99 | #define IF_AUD1 0x0100 /* audio channel 1 done interrupt */ | |
100 | #define IF_AUD0 0x0080 /* audio channel 0 done interrupt */ | |
101 | #define IF_BLIT 0x0040 /* blitter done interrupt */ | |
102 | #define IF_VERTB 0x0020 /* vertical blanking interrupt */ | |
103 | #define IF_COPER 0x0010 /* copper interrupt */ | |
104 | #define IF_PORTS 0x0008 /* external level 2 and CIA A interrupt */ | |
105 | #define IF_SOFT 0x0004 /* software initiated interrupt */ | |
106 | #define IF_DSKBLK 0x0002 /* diskblock DMA finished */ | |
107 | #define IF_TBE 0x0001 /* serial transmit buffer empty interrupt */ | |
108 | ||
109 | extern void amiga_do_irq(int irq, struct pt_regs *fp); | |
110 | extern void amiga_do_irq_list(int irq, struct pt_regs *fp); | |
111 | ||
112 | extern unsigned short amiga_intena_vals[]; | |
113 | ||
114 | /* CIA interrupt control register bits */ | |
115 | ||
116 | #define CIA_ICR_TA 0x01 | |
117 | #define CIA_ICR_TB 0x02 | |
118 | #define CIA_ICR_ALRM 0x04 | |
119 | #define CIA_ICR_SP 0x08 | |
120 | #define CIA_ICR_FLG 0x10 | |
121 | #define CIA_ICR_ALL 0x1f | |
122 | #define CIA_ICR_SETCLR 0x80 | |
123 | ||
124 | /* to access the interrupt control registers of CIA's use only | |
125 | ** these functions, they behave exactly like the amiga os routines | |
126 | */ | |
127 | ||
128 | extern struct ciabase ciaa_base, ciab_base; | |
129 | ||
130 | extern unsigned char cia_set_irq(struct ciabase *base, unsigned char mask); | |
131 | extern unsigned char cia_able_irq(struct ciabase *base, unsigned char mask); | |
132 | ||
133 | #endif /* asm-m68k/amigaints.h */ |