arch/.unmaintained/m68k-pp-native/include/asm/irq.h

   1 #ifndef ASM_IRQ_H
   2 #define ASM_IRQ_H
   3 /*
   4     Copyright © 1995-2001, The AROS Development Team. All rights reserved.
   5     $Id$
   6
   7     Desc: Interrupt core, part of kernel.resource
   8     Lang: english
   9 */
  10
  11 #include <exec/ptrace.h>
  12
  13 /*********************************************************************/
  14
  15 #define __STR(x) #x
  16 #define STR(x) __STR(x)
  17
  18 /*********************************************************************/
  19
  20 #define NR_IRQS             16      /* Use all XT-PIC interrupts */
  21 #define NR_SYSCALLS         4
  22
  23 /*
  24  * Structure used to describe interrupt controler. Sufficient to describe
  25  * the low-level hardware
  26  */
  27 struct irqController
  28 {
  29     const char  *ic_Name;                       /* Controller name */
  30     void        (*ic_startup)(unsigned int);    /* All functions here! */
  31     void        (*ic_shutdown)(unsigned int);
  32     void        (*ic_handle)(unsigned int, unsigned int, struct pt_regs *);
  33     void        (*ic_enable)(unsigned int);
  34     void        (*ic_disable)(unsigned int);
  35 };
  36
  37 struct irqServer
  38 {
  39     void        (*is_handler)(int, void *, struct pt_regs *);
  40     const char  *is_name;       /* Server name */
  41     void        *is_UserData;   /* Will be class data or similar */
  42 };
  43
  44 struct irqDescriptor
  45 {
  46     unsigned int            id_status;      /* IRQ status. See below for details */
  47     struct irqController    *id_handler;    /* how to do emable/disable */
  48     struct irqServer        *id_server;     /* Server pointer */
  49     unsigned int            id_depth;       /* Disable depth for nested IRQs */
  50     unsigned int            id_count;       /* IRQ counter */
  51     unsigned int            id_unused[3];
  52 };
  53
  54 /* IRQ status */
  55
  56 #define IRQ_INPROGRESS   1  /* Handler active - DO NOT enter */
  57 #define IRQ_DISABLED     2  /* IRQ disabled - DO NOT enter */
  58 #define IRQ_PENDING      4  /* IRQ pending - replay on enable */
  59 #define IRQ_REPLAY       8  /* IRQ has been replayed but not acked yet */
  60 #define IRQ_AUTODETECT  16  /* IRQ is beeing autodetected */
  61 #define IRQ_WAITING     32  /* IRQ not seen yet - for autodetection */
  62
  63 #endif /* ASM_IRQ_H */