include/asm-m68k/amigaints.h

   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 */