pexpert/i386/pe_interrupt.c

   1 /*
   2  * Copyright (c) 2000 Apple Computer, Inc. All rights reserved.
   3  *
   4  * @APPLE_LICENSE_HEADER_START@
   5  *
   6  * The contents of this file constitute Original Code as defined in and
   7  * are subject to the Apple Public Source License Version 1.1 (the
   8  * "License").  You may not use this file except in compliance with the
   9  * License.  Please obtain a copy of the License at
  10  * http://www.apple.com/publicsource and read it before using this file.
  11  *
  12  * This Original Code and all software distributed under the License are
  13  * distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY KIND, EITHER
  14  * EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES,
  15  * INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY,
  16  * FITNESS FOR A PARTICULAR PURPOSE OR NON-INFRINGEMENT.  Please see the
  17  * License for the specific language governing rights and limitations
  18  * under the License.
  19  *
  20  * @APPLE_LICENSE_HEADER_END@
  21  */
  22 #include <pexpert/pexpert.h>
  23 #include <pexpert/protos.h>
  24 #include <machine/machine_routines.h>
  25 #include <sys/kdebug.h>
  26
  27 struct i386_interrupt_handler {
  28         IOInterruptHandler      handler;
  29         void                    *nub;
  30         void                    *target;
  31         void                    *refCon;
  32 };
  33
  34 typedef struct i386_interrupt_handler i386_interrupt_handler_t;
  35
  36 i386_interrupt_handler_t        PE_interrupt_handler;
  37
  38 void PE_platform_interrupt_initialize(void)
  39 {
  40 }
  41
  42 void
  43 PE_incoming_interrupt(int interrupt, void *eip)
  44 {
  45         boolean_t               save_int;
  46         i386_interrupt_handler_t        *vector;
  47
  48         KERNEL_DEBUG_CONSTANT(MACHDBG_CODE(DBG_MACH_EXCP_INTR, 0) | DBG_FUNC_START,
  49            0, (unsigned int)eip, 0, 0, 0);
  50
  51         vector = &PE_interrupt_handler;
  52         save_int  = ml_set_interrupts_enabled(FALSE);
  53         vector->handler(vector->target, vector->refCon, vector->nub, interrupt);
  54         ml_set_interrupts_enabled(save_int);
  55
  56         KERNEL_DEBUG_CONSTANT(MACHDBG_CODE(DBG_MACH_EXCP_INTR, 0) | DBG_FUNC_END,
  57            0, 0, 0, 0, 0);
  58
  59 }
  60
  61 void PE_install_interrupt_handler(void *nub, int source,
  62                                   void *target,
  63                                   IOInterruptHandler handler,
  64                                   void *refCon)
  65 {
  66         i386_interrupt_handler_t        *vector;
  67
  68         vector = &PE_interrupt_handler;
  69
  70         /*vector->source = source; IGNORED */
  71         vector->handler = handler;
  72         vector->nub = nub;
  73         vector->target = target;
  74         vector->refCon = refCon;
  75 }