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   1 #ifndef _S390_EXTINT_H
   2 #define _S390_EXTINT_H
   3
   4 /*
   5  *  include/asm-s390/s390_ext.h
   6  *
   7  *  S390 version
   8  *    Copyright (C) 1999,2000 IBM Deutschland Entwicklung GmbH, IBM Corporation
   9  *    Author(s): Holger Smolinski (Holger.Smolinski@de.ibm.com),
  10  *               Martin Schwidefsky (schwidefsky@de.ibm.com)
  11  */
  12
  13 typedef void (*ext_int_handler_t)(__u16 code);
  14
  15 /*
  16  * Warning: if you change ext_int_info_t you have to change the
  17  * external interrupt handler in entry.S too.
  18  */
  19 typedef struct ext_int_info_t {
  20         struct ext_int_info_t *next;
  21         ext_int_handler_t handler;
  22         __u16 code;
  23 } __attribute__ ((packed)) ext_int_info_t;
  24
  25 extern ext_int_info_t *ext_int_hash[];
  26
  27 int register_external_interrupt(__u16 code, ext_int_handler_t handler);
  28 int register_early_external_interrupt(__u16 code, ext_int_handler_t handler,
  29                                       ext_int_info_t *info);
  30 int unregister_external_interrupt(__u16 code, ext_int_handler_t handler);
  31 int unregister_early_external_interrupt(__u16 code, ext_int_handler_t handler,
  32                                         ext_int_info_t *info);
  33
  34 #endif