rom/exec/chipset.h

   1 /*
   2     Copyright © 2011, The AROS Development Team. All rights reserved.
   3     $Id$
   4
   5     Desc: Amiga(tm) chipset control macros
   6     Lang: english
   7 */
   8
   9 #ifdef AROS_ARCH_amiga
  10
  11 #include <hardware/custom.h>
  12
  13 static inline void CUSTOM_ENABLE(ULONG intNumber)
  14 {
  15     if (intNumber < INTB_INTEN)
  16     {
  17         volatile struct Custom *custom = (struct Custom *)(void **)0xdff000;
  18
  19         custom->intena = (UWORD)(INTF_SETCLR|(1L<<intNumber));
  20     }
  21 }
  22
  23 static inline void CUSTOM_DISABLE(ULONG intNumber, struct List *list)
  24 {
  25     if (intNumber < INTB_INTEN)
  26     {
  27         /* disable interrupts if there are no more nodes on the list */
  28         if (list->lh_TailPred == (struct Node *)list)
  29         {
  30             volatile struct Custom *custom = (struct Custom *)(void **)0xdff000;
  31
  32             custom->intena = (UWORD)((1<<intNumber));
  33         }
  34     }
  35 }
  36
  37 static inline void CUSTOM_ACK(UWORD intBit)
  38 {
  39     volatile struct Custom *custom = (struct Custom*)0xdff000;
  40
  41     custom->intena = intBit;
  42     custom->intreq = intBit;
  43 }
  44
  45 static inline void CUSTOM_CAUSE(UWORD intBit)
  46 {
  47     volatile struct Custom *custom = (struct Custom*)0xdff000;
  48
  49     custom->intreq = INTF_SETCLR | intBit;
  50 }
  51
  52 #else
  53
  54 struct Custom;
  55
  56 #define CUSTOM_ENABLE(intNumber)
  57 #define CUSTOM_DISABLE(intNumber, list)
  58 #define CUSTOM_ACK(intBit)
  59 #define CUSTOM_CAUSE(intBit)
  60
  61 #endif