1*33de042dSApple OSS Distributions /* 2*33de042dSApple OSS Distributions * Copyright (c) 2019 Apple Computer, Inc. All rights reserved. 3*33de042dSApple OSS Distributions * 4*33de042dSApple OSS Distributions * @APPLE_OSREFERENCE_LICENSE_HEADER_START@ 5*33de042dSApple OSS Distributions * 6*33de042dSApple OSS Distributions * This file contains Original Code and/or Modifications of Original Code 7*33de042dSApple OSS Distributions * as defined in and that are subject to the Apple Public Source License 8*33de042dSApple OSS Distributions * Version 2.0 (the 'License'). You may not use this file except in 9*33de042dSApple OSS Distributions * compliance with the License. The rights granted to you under the License 10*33de042dSApple OSS Distributions * may not be used to create, or enable the creation or redistribution of, 11*33de042dSApple OSS Distributions * unlawful or unlicensed copies of an Apple operating system, or to 12*33de042dSApple OSS Distributions * circumvent, violate, or enable the circumvention or violation of, any 13*33de042dSApple OSS Distributions * terms of an Apple operating system software license agreement. 14*33de042dSApple OSS Distributions * 15*33de042dSApple OSS Distributions * Please obtain a copy of the License at 16*33de042dSApple OSS Distributions * http://www.opensource.apple.com/apsl/ and read it before using this file. 17*33de042dSApple OSS Distributions * 18*33de042dSApple OSS Distributions * The Original Code and all software distributed under the License are 19*33de042dSApple OSS Distributions * distributed on an 'AS IS' basis, WITHOUT WARRANTY OF ANY KIND, EITHER 20*33de042dSApple OSS Distributions * EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES, 21*33de042dSApple OSS Distributions * INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY, 22*33de042dSApple OSS Distributions * FITNESS FOR A PARTICULAR PURPOSE, QUIET ENJOYMENT OR NON-INFRINGEMENT. 23*33de042dSApple OSS Distributions * Please see the License for the specific language governing rights and 24*33de042dSApple OSS Distributions * limitations under the License. 25*33de042dSApple OSS Distributions * 26*33de042dSApple OSS Distributions * @APPLE_OSREFERENCE_LICENSE_HEADER_END@ 27*33de042dSApple OSS Distributions */ 28*33de042dSApple OSS Distributions 29*33de042dSApple OSS Distributions #pragma once 30*33de042dSApple OSS Distributions 31*33de042dSApple OSS Distributions extern "C" { 32*33de042dSApple OSS Distributions #include <mach/semaphore.h> 33*33de042dSApple OSS Distributions }; 34*33de042dSApple OSS Distributions 35*33de042dSApple OSS Distributions #include <IOKit/IOInterruptController.h> 36*33de042dSApple OSS Distributions 37*33de042dSApple OSS Distributions /*! 38*33de042dSApple OSS Distributions * @class PassthruInterruptController 39*33de042dSApple OSS Distributions * @abstract Trivial IOInterruptController class that passes all IRQs through to a 40*33de042dSApple OSS Distributions * "child" driver. 41*33de042dSApple OSS Distributions * @discussion Waits for a "child" driver (typically loaded in a kext) to register itself, 42*33de042dSApple OSS Distributions * then passes the child driver's IOService pointer back via 43*33de042dSApple OSS Distributions * waitForChildController() so that XNU can operate on it directly. 44*33de042dSApple OSS Distributions */ 45*33de042dSApple OSS Distributions class PassthruInterruptController : public IOInterruptController 46*33de042dSApple OSS Distributions { 47*33de042dSApple OSS Distributions OSDeclareDefaultStructors(PassthruInterruptController); 48*33de042dSApple OSS Distributions 49*33de042dSApple OSS Distributions public: 50*33de042dSApple OSS Distributions virtual bool init(void) APPLE_KEXT_OVERRIDE; 51*33de042dSApple OSS Distributions 52*33de042dSApple OSS Distributions virtual void *waitForChildController(void); 53*33de042dSApple OSS Distributions 54*33de042dSApple OSS Distributions virtual void setCPUInterruptProperties(IOService *service) APPLE_KEXT_OVERRIDE; 55*33de042dSApple OSS Distributions 56*33de042dSApple OSS Distributions virtual IOReturn registerInterrupt(IOService *nub, int source, 57*33de042dSApple OSS Distributions void *target, 58*33de042dSApple OSS Distributions IOInterruptHandler handler, 59*33de042dSApple OSS Distributions void *refCon) APPLE_KEXT_OVERRIDE; 60*33de042dSApple OSS Distributions 61*33de042dSApple OSS Distributions virtual IOReturn getInterruptType(IOService *nub, int source, 62*33de042dSApple OSS Distributions int *interruptType) APPLE_KEXT_OVERRIDE; 63*33de042dSApple OSS Distributions 64*33de042dSApple OSS Distributions virtual IOReturn enableInterrupt(IOService *nub, int source) APPLE_KEXT_OVERRIDE; 65*33de042dSApple OSS Distributions virtual IOReturn disableInterrupt(IOService *nub, int source) APPLE_KEXT_OVERRIDE; 66*33de042dSApple OSS Distributions virtual IOReturn causeInterrupt(IOService *nub, int source) APPLE_KEXT_OVERRIDE; 67*33de042dSApple OSS Distributions 68*33de042dSApple OSS Distributions virtual IOReturn handleInterrupt(void *refCon, IOService *nub, 69*33de042dSApple OSS Distributions int source) APPLE_KEXT_OVERRIDE; 70*33de042dSApple OSS Distributions 71*33de042dSApple OSS Distributions virtual void externalInterrupt(void); 72*33de042dSApple OSS Distributions 73*33de042dSApple OSS Distributions protected: 74*33de042dSApple OSS Distributions IOInterruptHandler child_handler; 75*33de042dSApple OSS Distributions void *child_target; 76*33de042dSApple OSS Distributions void *child_refCon; 77*33de042dSApple OSS Distributions IOService *child_nub; 78*33de042dSApple OSS Distributions semaphore_t child_sentinel; 79*33de042dSApple OSS Distributions }; 80