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Annotation of XNU/iokit/Drivers/platform/drvApplePMU/IOPMUADBController.cpp, revision 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:  * 12 Nov 1998 suurballe  Created.
        !            24:  */
        !            25: 
        !            26: #include <IOKit/IOSyncer.h>
        !            27: #include "IOPMUADBController.h"
        !            28: #include "pmupriv.h"
        !            29: 
        !            30: #define super IOADBController
        !            31: OSDefineMetaClassAndStructors(IOPMUADBController, IOADBController)
        !            32: 
        !            33: // **********************************************************************************
        !            34: // init
        !            35: //
        !            36: // **********************************************************************************
        !            37: bool IOPMUADBController::init ( OSDictionary * properties, ApplePMU * driver )
        !            38: {
        !            39: PMUdriver = driver;
        !            40: pollList = 0;
        !            41: autopollOn = false;
        !            42: 
        !            43: return super::init(properties);
        !            44: }
        !            45: 
        !            46: 
        !            47: // **********************************************************************************
        !            48: // start
        !            49: //
        !            50: // **********************************************************************************
        !            51: bool IOPMUADBController::start ( IOService * nub )
        !            52: {
        !            53:     if( !super::start(nub))
        !            54:         return false;
        !            55: 
        !            56:     PMUdriver->registerForADBInterrupts ( autopollHandler, this );
        !            57:     return true;
        !            58: }
        !            59: 
        !            60: 
        !            61: // **********************************************************************************
        !            62: // setAutoPollPeriod
        !            63: //
        !            64: // **********************************************************************************
        !            65: IOReturn IOPMUADBController::setAutoPollPeriod ( int )
        !            66: {
        !            67: return kPMUNotSupported;
        !            68: }
        !            69: 
        !            70: 
        !            71: // **********************************************************************************
        !            72: // getAutoPollPeriod
        !            73: //
        !            74: // **********************************************************************************
        !            75: IOReturn IOPMUADBController::getAutoPollPeriod ( int * )
        !            76: {
        !            77: return kPMUNotSupported;
        !            78: }
        !            79: 
        !            80: 
        !            81: // **********************************************************************************
        !            82: // setAutoPollList
        !            83: //
        !            84: // **********************************************************************************
        !            85: IOReturn IOPMUADBController::setAutoPollList ( UInt16 PollBitField )
        !            86: {
        !            87: PMUrequest     request;
        !            88: 
        !            89: pollList = PollBitField;                               // remember the new poll list
        !            90: 
        !            91: if ( autopollOn ) {                    
        !            92:         request.sync = IOSyncer::create();
        !            93:         request.pmCommand = kPMUpMgrADB;       // if PMU is currently autopolling,
        !            94:         request.pmFlag = false;                // give it the new list
        !            95:         request.pmSLength1 = 4;
        !            96:         request.pmSBuffer2 = NULL;
        !            97:         request.pmSLength2 = 0;
        !            98:         request.pmRBuffer = NULL;
        !            99:         request.pmSBuffer1[0] = 0;
        !           100:         request.pmSBuffer1[1] = 0x86;
        !           101:         request.pmSBuffer1[2] = (UInt8)(PollBitField >> 8);
        !           102:         request.pmSBuffer1[3] = (UInt8)(PollBitField & 0xff);
        !           103: 
        !           104:         PMUdriver->enqueueCommand(&request);
        !           105:         request.sync->wait();                  // wait till done
        !           106: }
        !           107: return kPMUNoError;
        !           108: }
        !           109: 
        !           110: 
        !           111: // **********************************************************************************
        !           112: // getAutoPollList
        !           113: //
        !           114: // **********************************************************************************
        !           115: IOReturn IOPMUADBController::getAutoPollList ( UInt16 * activeAddressMask )
        !           116: {
        !           117: *activeAddressMask = pollList;
        !           118: return kPMUNoError;
        !           119: }
        !           120: 
        !           121: 
        !           122: // **********************************************************************************
        !           123: // setAutoPollEnable
        !           124: //
        !           125: // **********************************************************************************
        !           126: IOReturn IOPMUADBController::setAutoPollEnable ( bool enable )
        !           127: {
        !           128: PMUrequest request;
        !           129: 
        !           130: if ( enable ) {                                                        // enabling autopoll
        !           131:         autopollOn = true;
        !           132:         request.sync = IOSyncer::create();
        !           133:         request.pmCommand = kPMUpMgrADB;                                // give it the list we have
        !           134:         request.pmFlag = false;
        !           135:         request.pmSLength1 = 4;
        !           136:         request.pmSBuffer2 = NULL;
        !           137:         request.pmSLength2 = 0;
        !           138:         request.pmRBuffer = NULL;
        !           139:         request.pmSBuffer1[0] = 0;
        !           140:         request.pmSBuffer1[1] = 0x86;
        !           141:         request.pmSBuffer1[2] = (UInt8)(pollList >> 8);
        !           142:         request.pmSBuffer1[3] = (UInt8)(pollList & 0xff);
        !           143: 
        !           144:         PMUdriver->enqueueCommand(&request);
        !           145:         request.sync->wait();                  // wait till done
        !           146:         return kPMUNoError;
        !           147: }
        !           148:     else {                                                             // disabling autopoll
        !           149:         autopollOn = false;
        !           150:         request.sync = IOSyncer::create();
        !           151:         request.pmCommand = kPMUpMgrADBoff;
        !           152:         request.pmFlag = false;
        !           153:         request.pmSLength1 = 0;
        !           154:         request.pmSBuffer2 = NULL;
        !           155:         request.pmSLength2 = 0;
        !           156:         request.pmRBuffer = NULL;
        !           157: 
        !           158:         PMUdriver->enqueueCommand(&request);
        !           159:         request.sync->wait();                  // wait till done
        !           160: 
        !           161:         return kPMUNoError;
        !           162: }
        !           163: }
        !           164: 
        !           165: 
        !           166: // **********************************************************************************
        !           167: // resetBus
        !           168: //
        !           169: // **********************************************************************************
        !           170: IOReturn IOPMUADBController::resetBus ( void )
        !           171: {
        !           172: PMUrequest request;
        !           173: 
        !           174: request.sync = IOSyncer::create();
        !           175: request.pmCommand = kPMUpMgrADB;
        !           176: request.pmFlag = true;                                 // this op solicits input from PGE
        !           177: request.pmSLength1 = 3;
        !           178: request.pmSBuffer2 = NULL;
        !           179: request.pmSLength2 = 0;
        !           180: request.pmRBuffer = NULL;
        !           181: request.pmSBuffer1[0] = kPMUResetADBBus;
        !           182: request.pmSBuffer1[1] = 0;
        !           183: request.pmSBuffer1[2] = 0;
        !           184: 
        !           185: PMUdriver->enqueueCommand(&request);
        !           186: request.sync->wait();                  // wait till done
        !           187: 
        !           188: return kPMUNoError;
        !           189: }
        !           190: 
        !           191: 
        !           192: // **********************************************************************************
        !           193: // flushDevice
        !           194: //
        !           195: // **********************************************************************************
        !           196: IOReturn IOPMUADBController::flushDevice ( IOADBAddress address )
        !           197: {
        !           198: PMUrequest request;
        !           199: 
        !           200: request.sync = IOSyncer::create();
        !           201: request.pmCommand = kPMUpMgrADB;
        !           202: request.pmFlag = true;
        !           203: request.pmSLength1 = 3;
        !           204: request.pmSBuffer2 = NULL;
        !           205: request.pmSLength2 = 0;
        !           206: request.pmRBuffer = NULL;
        !           207: request.pmSBuffer1[0] = kPMUFlushADB | (address << kPMUADBAddressField);
        !           208: if ( autopollOn ) {
        !           209:        request.pmSBuffer1[1] = 2;
        !           210: }
        !           211: else {
        !           212:         request.pmSBuffer1[1] = 0;
        !           213: }
        !           214: request.pmSBuffer1[2] = 0;
        !           215: 
        !           216: PMUdriver->enqueueCommand(&request);
        !           217: request.sync->wait();                  // wait till done
        !           218: 
        !           219: return kPMUNoError;
        !           220: }
        !           221: 
        !           222: 
        !           223: // **********************************************************************************
        !           224: // readFromDevice
        !           225: //
        !           226: // The length parameter is ignored on entry.  It is set on exit to reflect
        !           227: // the number of bytes read from the device.
        !           228: // **********************************************************************************
        !           229: IOReturn IOPMUADBController::readFromDevice ( IOADBAddress address, IOADBRegister adbRegister,
        !           230:                        UInt8 * data, IOByteCount * length )
        !           231: {
        !           232: PMUrequest     request;
        !           233: UInt8 *                source;
        !           234: UInt8 *                dest;
        !           235: int            copylength, i;
        !           236: 
        !           237: if ( (length == NULL) || (data == NULL) ) {
        !           238:        return kPMUParameterError;
        !           239: }
        !           240: 
        !           241: request.sync = IOSyncer::create();
        !           242: request.pmCommand = kPMUpMgrADB;
        !           243: request.pmFlag = true;                                 // this op solicits input from PGE
        !           244: request.pmSLength1 = 3;
        !           245: request.pmSBuffer2 = NULL;
        !           246: request.pmSLength2 = 0;
        !           247: request.pmSBuffer1[0] = kPMUReadADB | (address << kPMUADBAddressField) | (adbRegister);
        !           248: if ( autopollOn ) {
        !           249:        request.pmSBuffer1[1] = 2;
        !           250: }
        !           251: else {
        !           252:         request.pmSBuffer1[1] = 0;
        !           253: }
        !           254: request.pmSBuffer1[2] = 0;
        !           255: 
        !           256: PMUdriver->enqueueCommand(&request);
        !           257: request.sync->wait();                  // wait till done
        !           258: 
        !           259: *length = request.pmRLength;                           // set caller's length
        !           260:     
        !           261: if (request.pmRLength == 0 ) {                         // nothing read; device isn't there
        !           262:        return ADB_RET_NOTPRESENT;
        !           263: }
        !           264: else {
        !           265:        source = request.pmRBuffer;                     // copy all but first two bytes of adb data
        !           266:         dest = data;
        !           267:         if ( *length > request.pmRLength ) {
        !           268:             copylength = request.pmRLength;
        !           269:         }
        !           270:         else {
        !           271:             copylength =*length;
        !           272:         }
        !           273:         for ( i = 0; i < copylength; i++ ) {
        !           274:             *dest++ = *source++;
        !           275:         }
        !           276:         return ADB_RET_OK;
        !           277: }
        !           278: }
        !           279: 
        !           280: 
        !           281: // **********************************************************************************
        !           282: // writeToDevice
        !           283: //
        !           284: // **********************************************************************************
        !           285: IOReturn IOPMUADBController::writeToDevice ( IOADBAddress address, IOADBRegister adbRegister,
        !           286:                        UInt8 * data, IOByteCount * length )
        !           287: {
        !           288: PMUrequest request;
        !           289: 
        !           290: if ( (* length == 0) || (data == NULL) || (* length > (MISC_LENGTH)) )
        !           291: {
        !           292:        return kPMUParameterError;
        !           293: }
        !           294: 
        !           295: request.sync = IOSyncer::create();
        !           296: request.pmCommand = kPMUpMgrADB;
        !           297: request.pmFlag = true;                                 // this op solicits input from PGE
        !           298: request.pmSLength1 = 3;
        !           299: request.pmSBuffer2 = data;
        !           300: request.pmSLength2 = *length;
        !           301: request.pmRBuffer = NULL;
        !           302: request.pmSBuffer1[0] = kPMUWriteADB | (address << kPMUADBAddressField) | (adbRegister);
        !           303: if ( autopollOn ) {
        !           304:        request.pmSBuffer1[1] = 2;
        !           305: }
        !           306: else {
        !           307:         request.pmSBuffer1[1] = 0;
        !           308: }
        !           309: request.pmSBuffer1[2] = *length;
        !           310: 
        !           311: PMUdriver->enqueueCommand(&request);
        !           312: request.sync->wait();                  // wait till done
        !           313: 
        !           314: return kPMUNoError;
        !           315: }
        !           316: 
        !           317: 

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