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authorLinus Torvalds <torvalds@ppc970.osdl.org>2005-04-16 18:20:36 -0400
committerLinus Torvalds <torvalds@ppc970.osdl.org>2005-04-16 18:20:36 -0400
commit1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 (patch)
tree0bba044c4ce775e45a88a51686b5d9f90697ea9d /include/asm-m68k/macints.h
Linux-2.6.12-rc2v2.6.12-rc2
Initial git repository build. I'm not bothering with the full history, even though we have it. We can create a separate "historical" git archive of that later if we want to, and in the meantime it's about 3.2GB when imported into git - space that would just make the early git days unnecessarily complicated, when we don't have a lot of good infrastructure for it. Let it rip!
Diffstat (limited to 'include/asm-m68k/macints.h')
-rw-r--r--include/asm-m68k/macints.h169
1 files changed, 169 insertions, 0 deletions
diff --git a/include/asm-m68k/macints.h b/include/asm-m68k/macints.h
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1/*
2** macints.h -- Macintosh Linux interrupt handling structs and prototypes
3**
4** Copyright 1997 by Michael Schmitz
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*/
11
12#ifndef _ASM_MACINTS_H_
13#define _ASM_MACINTS_H_
14
15#include <asm/irq.h>
16
17/* Setting this prints debugging info for unclaimed interrupts */
18
19#define DEBUG_SPURIOUS
20
21/* Setting this prints debugging info on each autovector interrupt */
22
23/* #define DEBUG_IRQS */
24
25/* Setting this prints debugging info on each Nubus interrupt */
26
27/* #define DEBUG_NUBUS_INT */
28
29/* Setting this prints debugging info on irqs as they enabled and disabled. */
30
31/* #define DEBUG_IRQUSE */
32
33/*
34 * Base IRQ number for all Mac68K interrupt sources. Each source
35 * has eight indexes (base -> base+7).
36 */
37
38#define VIA1_SOURCE_BASE 8
39#define VIA2_SOURCE_BASE 16
40#define MAC_SCC_SOURCE_BASE 24
41#define PSC3_SOURCE_BASE 24
42#define PSC4_SOURCE_BASE 32
43#define PSC5_SOURCE_BASE 40
44#define PSC6_SOURCE_BASE 48
45#define NUBUS_SOURCE_BASE 56
46#define BABOON_SOURCE_BASE 64
47
48/*
49 * Maximum IRQ number is BABOON_SOURCE_BASE + 7,
50 * giving us IRQs up through 71
51 */
52
53#define NUM_MAC_SOURCES 72
54
55/*
56 * clean way to separate IRQ into its source and index
57 */
58
59#define IRQ_SRC(irq) (irq >> 3)
60#define IRQ_IDX(irq) (irq & 7)
61
62#define IRQ_SPURIOUS (0)
63
64/* auto-vector interrupts */
65#define IRQ_AUTO_1 (1)
66#define IRQ_AUTO_2 (2)
67#define IRQ_AUTO_3 (3)
68#define IRQ_AUTO_4 (4)
69#define IRQ_AUTO_5 (5)
70#define IRQ_AUTO_6 (6)
71#define IRQ_AUTO_7 (7)
72
73/* VIA1 interrupts */
74#define IRQ_VIA1_0 (8) /* one second int. */
75#define IRQ_VIA1_1 (9) /* VBlank int. */
76#define IRQ_MAC_VBL IRQ_VIA1_1
77#define IRQ_VIA1_2 (10) /* ADB SR shifts complete */
78#define IRQ_MAC_ADB IRQ_VIA1_2
79#define IRQ_MAC_ADB_SR IRQ_VIA1_2
80#define IRQ_VIA1_3 (11) /* ADB SR CB2 ?? */
81#define IRQ_MAC_ADB_SD IRQ_VIA1_3
82#define IRQ_VIA1_4 (12) /* ADB SR ext. clock pulse */
83#define IRQ_MAC_ADB_CL IRQ_VIA1_4
84#define IRQ_VIA1_5 (13)
85#define IRQ_MAC_TIMER_2 IRQ_VIA1_5
86#define IRQ_VIA1_6 (14)
87#define IRQ_MAC_TIMER_1 IRQ_VIA1_6
88#define IRQ_VIA1_7 (15)
89
90/* VIA2/RBV interrupts */
91#define IRQ_VIA2_0 (16)
92#define IRQ_MAC_SCSIDRQ IRQ_VIA2_0
93#define IRQ_VIA2_1 (17)
94#define IRQ_MAC_NUBUS IRQ_VIA2_1
95#define IRQ_VIA2_2 (18)
96#define IRQ_VIA2_3 (19)
97#define IRQ_MAC_SCSI IRQ_VIA2_3
98#define IRQ_VIA2_4 (20)
99#define IRQ_VIA2_5 (21)
100#define IRQ_VIA2_6 (22)
101#define IRQ_VIA2_7 (23)
102
103/* Level 3 (PSC, AV Macs only) interrupts */
104#define IRQ_PSC3_0 (24)
105#define IRQ_MAC_MACE IRQ_PSC3_0
106#define IRQ_PSC3_1 (25)
107#define IRQ_PSC3_2 (26)
108#define IRQ_PSC3_3 (27)
109
110/* Level 4 (SCC) interrupts */
111#define IRQ_SCC (32)
112#define IRQ_SCCA (33)
113#define IRQ_SCCB (34)
114#if 0 /* FIXME: are there multiple interrupt conditions on the SCC ?? */
115/* SCC interrupts */
116#define IRQ_SCCB_TX (32)
117#define IRQ_SCCB_STAT (33)
118#define IRQ_SCCB_RX (34)
119#define IRQ_SCCB_SPCOND (35)
120#define IRQ_SCCA_TX (36)
121#define IRQ_SCCA_STAT (37)
122#define IRQ_SCCA_RX (38)
123#define IRQ_SCCA_SPCOND (39)
124#endif
125
126/* Level 4 (PSC, AV Macs only) interrupts */
127#define IRQ_PSC4_0 (32)
128#define IRQ_PSC4_1 (33)
129#define IRQ_PSC4_2 (34)
130#define IRQ_PSC4_3 (35)
131#define IRQ_MAC_MACE_DMA IRQ_PSC4_3
132
133/* Level 5 (PSC, AV Macs only) interrupts */
134#define IRQ_PSC5_0 (40)
135#define IRQ_PSC5_1 (41)
136#define IRQ_PSC5_2 (42)
137#define IRQ_PSC5_3 (43)
138
139/* Level 6 (PSC, AV Macs only) interrupts */
140#define IRQ_PSC6_0 (48)
141#define IRQ_PSC6_1 (49)
142#define IRQ_PSC6_2 (50)
143#define IRQ_PSC6_3 (51)
144
145/* Nubus interrupts (cascaded to VIA2) */
146#define IRQ_NUBUS_9 (56)
147#define IRQ_NUBUS_A (57)
148#define IRQ_NUBUS_B (58)
149#define IRQ_NUBUS_C (59)
150#define IRQ_NUBUS_D (60)
151#define IRQ_NUBUS_E (61)
152#define IRQ_NUBUS_F (62)
153
154/* Baboon interrupts (cascaded to nubus slot $C) */
155#define IRQ_BABOON_0 (64)
156#define IRQ_BABOON_1 (65)
157#define IRQ_BABOON_2 (66)
158#define IRQ_BABOON_3 (67)
159
160#define SLOT2IRQ(x) (x + 47)
161#define IRQ2SLOT(x) (x - 47)
162
163#define INT_CLK 24576 /* CLK while int_clk =2.456MHz and divide = 100 */
164#define INT_TICKS 246 /* to make sched_time = 99.902... HZ */
165
166extern irq_node_t *mac_irq_list[NUM_MAC_SOURCES];
167extern void mac_do_irq_list(int irq, struct pt_regs *);
168
169#endif /* asm/macints.h */