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Annotation of XNU/iokit/Drivers/platform/drvAppleIntelClassicPIC/AppleIntelClassicPIC.h, revision 1.1.1.1

1.1       root        1: /*
                      2:  * Copyright (c) 1998-2000 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: /*
                     23:  * Copyright (c) 1999 Apple Computer, Inc.  All rights reserved.
                     24:  *
                     25:  *  DRI: Josh de Cesare
                     26:  *
                     27:  */
                     28: 
                     29: #ifndef _IOKIT_APPLEINTELCLASSICPIC_H
                     30: #define _IOKIT_APPLEINTELCLASSICPIC_H
                     31: 
                     32: #include <IOKit/IOInterrupts.h>
                     33: #include <IOKit/IOInterruptController.h>
                     34: 
                     35: #define kClockIRQ      0       /* FIXME for SMP systems. */
                     36: 
                     37: #define        kPIC1BasePort   0x20
                     38: #define        kPIC2BasePort   0xa0
                     39: 
                     40: #define kPICCmdPortOffset      0
                     41: #define        kPICDataPortOffset      1
                     42: 
                     43: #define kEOICommand    0x20
                     44: 
                     45: #define kPICSlaveIRQID 0x04    /* Slave ID for second PIC on first pic */
                     46: #define        kPICSlaveID     2       /* Slave ID for second PIC */
                     47: 
                     48: #define        kNumVectors     (16)
                     49: 
                     50: typedef void (*IOKitInterruptHookType)(void *, int, int);
                     51: 
                     52: class AppleIntelClassicPIC : public IOInterruptController
                     53: {
                     54:   OSDeclareDefaultStructors(AppleIntelClassicPIC);
                     55:   
                     56: private:
                     57:   IOService              *parentNub;
                     58: 
                     59:   volatile unsigned short      maskInterrupts;         /* Which interrupts are masked out */
                     60:   IOKitInterruptHookType getRegisterInterruptHookAddress(void);
                     61: 
                     62: public:
                     63:   virtual bool start(IOService *provider);
                     64: 
                     65:   virtual IOReturn getInterruptType(IOService *nub, int source,
                     66:                                    int *interruptType);
                     67:   
                     68:   virtual IOInterruptAction getInterruptHandlerAddress(void);
                     69:   virtual IOReturn handleInterrupt(void *refCon,
                     70:                                   IOService *nub, int source);
                     71:   
                     72:   virtual bool vectorCanBeShared(long vectorNumber, IOInterruptVector *vector);
                     73:   virtual void initVector(long vectorNumber, IOInterruptVector *vector);
                     74:   virtual void disableVectorHard(long vectorNumber, IOInterruptVector *vector);
                     75:   virtual void enableVector(long vectorNumber, IOInterruptVector *vector);
                     76: 
                     77:   void         registerInterruptHook(void *func, int source, int isClock);
                     78: };
                     79: 
                     80: 
                     81: #endif /* ! _IOKIT_APPLEINTELCLASSICPIC_H */

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