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) 114 115/* Level 4 (PSC, AV Macs only) interrupts */ 116#define IRQ_PSC4_0 (32) 117#define IRQ_PSC4_1 (33) 118#define IRQ_PSC4_2 (34) 119#define IRQ_PSC4_3 (35) 120#define IRQ_MAC_MACE_DMA IRQ_PSC4_3 121 122/* Level 5 (PSC, AV Macs only) interrupts */ 123#define IRQ_PSC5_0 (40) 124#define IRQ_PSC5_1 (41) 125#define IRQ_PSC5_2 (42) 126#define IRQ_PSC5_3 (43) 127 128/* Level 6 (PSC, AV Macs only) interrupts */ 129#define IRQ_PSC6_0 (48) 130#define IRQ_PSC6_1 (49) 131#define IRQ_PSC6_2 (50) 132#define IRQ_PSC6_3 (51) 133 134/* Nubus interrupts (cascaded to VIA2) */ 135#define IRQ_NUBUS_9 (56) 136#define IRQ_NUBUS_A (57) 137#define IRQ_NUBUS_B (58) 138#define IRQ_NUBUS_C (59) 139#define IRQ_NUBUS_D (60) 140#define IRQ_NUBUS_E (61) 141#define IRQ_NUBUS_F (62) 142 143/* Baboon interrupts (cascaded to nubus slot $C) */ 144#define IRQ_BABOON_0 (64) 145#define IRQ_BABOON_1 (65) 146#define IRQ_BABOON_2 (66) 147#define IRQ_BABOON_3 (67) 148 149#define SLOT2IRQ(x) (x + 47) 150#define IRQ2SLOT(x) (x - 47) 151 152#define INT_CLK 24576 /* CLK while int_clk =2.456MHz and divide = 100 */ 153#define INT_TICKS 246 /* to make sched_time = 99.902... HZ */ 154 155extern irq_node_t *mac_irq_list[NUM_MAC_SOURCES]; 156extern void mac_do_irq_list(int irq, struct pt_regs *); 157 158#endif /* asm/macints.h */ 159