arch/m68k/include/asm/macints.h

   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 /*
  18  * Base IRQ number for all Mac68K interrupt sources. Each source
  19  * has eight indexes (base -> base+7).
  20  */
  21
  22 #define VIA1_SOURCE_BASE        8
  23 #define VIA2_SOURCE_BASE        16
  24 #define PSC3_SOURCE_BASE        24
  25 #define PSC4_SOURCE_BASE        32
  26 #define PSC5_SOURCE_BASE        40
  27 #define PSC6_SOURCE_BASE        48
  28 #define NUBUS_SOURCE_BASE       56
  29 #define BABOON_SOURCE_BASE      64
  30
  31 /*
  32  * Maximum IRQ number is BABOON_SOURCE_BASE + 7,
  33  * giving us IRQs up through 71
  34  */
  35
  36 #define NUM_MAC_SOURCES         72
  37
  38 /*
  39  * clean way to separate IRQ into its source and index
  40  */
  41
  42 #define IRQ_SRC(irq)    (irq >> 3)
  43 #define IRQ_IDX(irq)    (irq & 7)
  44
  45 /* VIA1 interrupts */
  46 #define IRQ_VIA1_0        (8)           /* one second int. */
  47 #define IRQ_VIA1_1        (9)           /* VBlank int. */
  48 #define IRQ_MAC_VBL       IRQ_VIA1_1
  49 #define IRQ_VIA1_2        (10)          /* ADB SR shifts complete */
  50 #define IRQ_MAC_ADB       IRQ_VIA1_2
  51 #define IRQ_MAC_ADB_SR    IRQ_VIA1_2
  52 #define IRQ_VIA1_3        (11)          /* ADB SR CB2 ?? */
  53 #define IRQ_MAC_ADB_SD    IRQ_VIA1_3
  54 #define IRQ_VIA1_4        (12)          /* ADB SR ext. clock pulse */
  55 #define IRQ_MAC_ADB_CL    IRQ_VIA1_4
  56 #define IRQ_VIA1_5        (13)
  57 #define IRQ_MAC_TIMER_2   IRQ_VIA1_5
  58 #define IRQ_VIA1_6        (14)
  59 #define IRQ_MAC_TIMER_1   IRQ_VIA1_6
  60 #define IRQ_VIA1_7        (15)
  61
  62 /* VIA2/RBV interrupts */
  63 #define IRQ_VIA2_0        (16)
  64 #define IRQ_MAC_SCSIDRQ   IRQ_VIA2_0
  65 #define IRQ_VIA2_1        (17)
  66 #define IRQ_MAC_NUBUS     IRQ_VIA2_1
  67 #define IRQ_VIA2_2        (18)
  68 #define IRQ_VIA2_3        (19)
  69 #define IRQ_MAC_SCSI      IRQ_VIA2_3
  70 #define IRQ_VIA2_4        (20)
  71 #define IRQ_VIA2_5        (21)
  72 #define IRQ_VIA2_6        (22)
  73 #define IRQ_VIA2_7        (23)
  74
  75 /* Level 3 (PSC, AV Macs only) interrupts */
  76 #define IRQ_PSC3_0        (24)
  77 #define IRQ_MAC_MACE      IRQ_PSC3_0
  78 #define IRQ_PSC3_1        (25)
  79 #define IRQ_PSC3_2        (26)
  80 #define IRQ_PSC3_3        (27)
  81
  82 /* Level 4 (PSC, AV Macs only) interrupts */
  83 #define IRQ_PSC4_0        (32)
  84 #define IRQ_PSC4_1        (33)
  85 #define IRQ_MAC_SCC_A     IRQ_PSC4_1
  86 #define IRQ_PSC4_2        (34)
  87 #define IRQ_MAC_SCC_B     IRQ_PSC4_2
  88 #define IRQ_PSC4_3        (35)
  89 #define IRQ_MAC_MACE_DMA  IRQ_PSC4_3
  90
  91 /* OSS Level 4 interrupts */
  92 #define IRQ_MAC_SCC       (33)
  93
  94 /* Level 5 (PSC, AV Macs only) interrupts */
  95 #define IRQ_PSC5_0        (40)
  96 #define IRQ_PSC5_1        (41)
  97 #define IRQ_PSC5_2        (42)
  98 #define IRQ_PSC5_3        (43)
  99
 100 /* Level 6 (PSC, AV Macs only) interrupts */
 101 #define IRQ_PSC6_0        (48)
 102 #define IRQ_PSC6_1        (49)
 103 #define IRQ_PSC6_2        (50)
 104 #define IRQ_PSC6_3        (51)
 105
 106 /* Nubus interrupts (cascaded to VIA2) */
 107 #define IRQ_NUBUS_9       (56)
 108 #define IRQ_NUBUS_A       (57)
 109 #define IRQ_NUBUS_B       (58)
 110 #define IRQ_NUBUS_C       (59)
 111 #define IRQ_NUBUS_D       (60)
 112 #define IRQ_NUBUS_E       (61)
 113 #define IRQ_NUBUS_F       (62)
 114
 115 /* Baboon interrupts (cascaded to nubus slot $C) */
 116 #define IRQ_BABOON_0      (64)
 117 #define IRQ_BABOON_1      (65)
 118 #define IRQ_BABOON_2      (66)
 119 #define IRQ_BABOON_3      (67)
 120
 121 #define SLOT2IRQ(x)       (x + 47)
 122 #define IRQ2SLOT(x)       (x - 47)
 123
 124 #endif /* asm/macints.h */