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 #include <asm/irq.h>
  17
  18 /*
  19 ** Amiga Interrupt sources.
  20 **
  21 */
  22
  23 #define AUTO_IRQS           (8)
  24 #define AMI_STD_IRQS        (14)
  25 #define CIA_IRQS            (5)
  26 #define AMI_IRQS            (32) /* AUTO_IRQS+AMI_STD_IRQS+2*CIA_IRQS */
  27
  28 /* builtin serial port interrupts */
  29 #define IRQ_AMIGA_TBE           (IRQ_USER+0)
  30 #define IRQ_AMIGA_RBF           (IRQ_USER+11)
  31
  32 /* floppy disk interrupts */
  33 #define IRQ_AMIGA_DSKBLK        (IRQ_USER+1)
  34 #define IRQ_AMIGA_DSKSYN        (IRQ_USER+12)
  35
  36 /* software interrupts */
  37 #define IRQ_AMIGA_SOFT          (IRQ_USER+2)
  38
  39 /* interrupts from external hardware */
  40 #define IRQ_AMIGA_PORTS         IRQ_AUTO_2
  41 #define IRQ_AMIGA_EXTER         IRQ_AUTO_6
  42
  43 /* copper interrupt */
  44 #define IRQ_AMIGA_COPPER        (IRQ_USER+4)
  45
  46 /* vertical blanking interrupt */
  47 #define IRQ_AMIGA_VERTB         (IRQ_USER+5)
  48
  49 /* Blitter done interrupt */
  50 #define IRQ_AMIGA_BLIT          (IRQ_USER+6)
  51
  52 /* Audio interrupts */
  53 #define IRQ_AMIGA_AUD0          (IRQ_USER+7)
  54 #define IRQ_AMIGA_AUD1          (IRQ_USER+8)
  55 #define IRQ_AMIGA_AUD2          (IRQ_USER+9)
  56 #define IRQ_AMIGA_AUD3          (IRQ_USER+10)
  57
  58 /* CIA interrupt sources */
  59 #define IRQ_AMIGA_CIAA          (IRQ_USER+14)
  60 #define IRQ_AMIGA_CIAA_TA       (IRQ_USER+14)
  61 #define IRQ_AMIGA_CIAA_TB       (IRQ_USER+15)
  62 #define IRQ_AMIGA_CIAA_ALRM     (IRQ_USER+16)
  63 #define IRQ_AMIGA_CIAA_SP       (IRQ_USER+17)
  64 #define IRQ_AMIGA_CIAA_FLG      (IRQ_USER+18)
  65 #define IRQ_AMIGA_CIAB          (IRQ_USER+19)
  66 #define IRQ_AMIGA_CIAB_TA       (IRQ_USER+19)
  67 #define IRQ_AMIGA_CIAB_TB       (IRQ_USER+20)
  68 #define IRQ_AMIGA_CIAB_ALRM     (IRQ_USER+21)
  69 #define IRQ_AMIGA_CIAB_SP       (IRQ_USER+22)
  70 #define IRQ_AMIGA_CIAB_FLG      (IRQ_USER+23)
  71
  72
  73 /* INTREQR masks */
  74 #define IF_SETCLR   0x8000      /* set/clr bit */
  75 #define IF_INTEN    0x4000      /* master interrupt bit in INT* registers */
  76 #define IF_EXTER    0x2000      /* external level 6 and CIA B interrupt */
  77 #define IF_DSKSYN   0x1000      /* disk sync interrupt */
  78 #define IF_RBF      0x0800      /* serial receive buffer full interrupt */
  79 #define IF_AUD3     0x0400      /* audio channel 3 done interrupt */
  80 #define IF_AUD2     0x0200      /* audio channel 2 done interrupt */
  81 #define IF_AUD1     0x0100      /* audio channel 1 done interrupt */
  82 #define IF_AUD0     0x0080      /* audio channel 0 done interrupt */
  83 #define IF_BLIT     0x0040      /* blitter done interrupt */
  84 #define IF_VERTB    0x0020      /* vertical blanking interrupt */
  85 #define IF_COPER    0x0010      /* copper interrupt */
  86 #define IF_PORTS    0x0008      /* external level 2 and CIA A interrupt */
  87 #define IF_SOFT     0x0004      /* software initiated interrupt */
  88 #define IF_DSKBLK   0x0002      /* diskblock DMA finished */
  89 #define IF_TBE      0x0001      /* serial transmit buffer empty interrupt */
  90
  91 /* CIA interrupt control register bits */
  92
  93 #define CIA_ICR_TA      0x01
  94 #define CIA_ICR_TB      0x02
  95 #define CIA_ICR_ALRM    0x04
  96 #define CIA_ICR_SP      0x08
  97 #define CIA_ICR_FLG     0x10
  98 #define CIA_ICR_ALL     0x1f
  99 #define CIA_ICR_SETCLR  0x80
 100
 101 extern void amiga_init_IRQ(void);
 102
 103 /* to access the interrupt control registers of CIA's use only
 104 ** these functions, they behave exactly like the amiga os routines
 105 */
 106
 107 extern struct ciabase ciaa_base, ciab_base;
 108
 109 extern void cia_init_IRQ(struct ciabase *base);
 110 extern unsigned char cia_set_irq(struct ciabase *base, unsigned char mask);
 111 extern unsigned char cia_able_irq(struct ciabase *base, unsigned char mask);
 112
 113 #endif /* asm-m68k/amigaints.h */