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Annotation of XNU/iokit/Families/IOFireWire/IOFireWireNub.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:  * Copyright (c) 1999 Apple Computer, Inc.  All rights reserved.
        !            24:  *
        !            25:  * HISTORY
        !            26:  * 21 May 99 wgulland created.
        !            27:  *
        !            28:  */
        !            29: 
        !            30: #define DEBUGGING_LEVEL 0      // 1 = low; 2 = high; 3 = extreme
        !            31: #define DEBUGLOG kprintf
        !            32: #include <IOKit/assert.h>
        !            33: 
        !            34: #include <IOKit/IOMessage.h>
        !            35: #include <IOKit/firewire/IOFireWireNub.h>
        !            36: #include <IOKit/firewire/IOFireWireController.h>
        !            37: #include "IOFireWireUserClient.h"
        !            38: 
        !            39: #define super IOService
        !            40: 
        !            41: /* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * */
        !            42: 
        !            43: OSDefineMetaClass( IOFireWireNub, IOService )
        !            44: OSDefineAbstractStructors(IOFireWireNub, IOService)
        !            45: 
        !            46: /* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * */
        !            47: 
        !            48: bool IOFireWireNub::init(OSDictionary * propTable)
        !            49: {
        !            50:     OSNumber *offset;
        !            51:     if( !super::init(propTable))
        !            52:         return (false);
        !            53: 
        !            54:     offset = OSDynamicCast(OSNumber, propTable->getObject("GUID"));
        !            55:     if(offset)
        !            56:         fUniqueID = offset->unsigned64BitValue();
        !            57: 
        !            58:     return true;
        !            59: }
        !            60: 
        !            61: IOFWSpeed IOFireWireNub::FWSpeed() const
        !            62: {
        !            63:     return fControl->FWSpeed(fNodeID);
        !            64: }
        !            65: 
        !            66: // How fast can this node talk to another node?
        !            67: IOFWSpeed IOFireWireNub::FWSpeed(const IOFireWireNub *dst) const
        !            68: {
        !            69:     return fControl->FWSpeed(fNodeID, dst->fNodeID);
        !            70: }
        !            71: 
        !            72: // How big (as a power of two) can packets sent to the node be?
        !            73: int IOFireWireNub::maxPackLog(bool forSend) const
        !            74: {
        !            75:     return fControl->maxPackLog(forSend, fNodeID);
        !            76: }
        !            77: 
        !            78: // How big (as a power of two) can packets sent between nodes be?
        !            79: int IOFireWireNub::maxPackLog(bool forSend, const IOFireWireNub *dst) const
        !            80: {
        !            81:     if(forSend)
        !            82:         return fControl->maxPackLog(fNodeID, dst->fNodeID);
        !            83:     else
        !            84:         return fControl->maxPackLog(dst->fNodeID, fNodeID);
        !            85: }
        !            86: 
        !            87: IOFWReadCommand *IOFireWireNub::createReadCommand(FWAddress devAddress, IOMemoryDescriptor *hostMem,
        !            88:                                FWDeviceCallback completion, void *refcon,
        !            89:                                bool failOnReset)
        !            90: {
        !            91:     IOFWReadCommand * cmd;
        !            92:     cmd = new IOFWReadCommand;
        !            93:     if(cmd) {
        !            94:         if(!cmd->initAll(this, devAddress, hostMem, completion, refcon, failOnReset)) {
        !            95:             cmd->release();
        !            96:             cmd = NULL;
        !            97:        }
        !            98:     }
        !            99:     return cmd;
        !           100: }
        !           101: 
        !           102: IOFWReadQuadCommand *IOFireWireNub::createReadQuadCommand(FWAddress devAddress, UInt32 *quads, int numQuads,
        !           103:                                FWDeviceCallback completion, void *refcon,
        !           104:                                bool failOnReset)
        !           105: {
        !           106:     IOFWReadQuadCommand * cmd;
        !           107:     cmd = new IOFWReadQuadCommand;
        !           108:     if(cmd) {
        !           109:         if(!cmd->initAll(fControl, this, devAddress, quads, numQuads, 
        !           110:                completion, refcon, failOnReset)) {
        !           111:             cmd->release();
        !           112:             cmd = NULL;
        !           113:        }
        !           114:     }
        !           115:     return cmd;
        !           116: }
        !           117: 
        !           118: IOFWWriteCommand *IOFireWireNub::createWriteCommand(FWAddress devAddress, IOMemoryDescriptor *hostMem,
        !           119:                                FWDeviceCallback completion, void *refcon,
        !           120:                                bool failOnReset)
        !           121: {
        !           122:     IOFWWriteCommand * cmd;
        !           123:     cmd = new IOFWWriteCommand;
        !           124:     if(cmd) {
        !           125:         if(!cmd->initAll(this, devAddress, hostMem, completion, refcon, failOnReset)) {
        !           126:             cmd->release();
        !           127:             cmd = NULL;
        !           128:        }
        !           129:     }
        !           130:     return cmd;
        !           131: }
        !           132: 
        !           133: IOFWWriteQuadCommand *IOFireWireNub::createWriteQuadCommand(FWAddress devAddress, 
        !           134:                                UInt32 *quads, int numQuads,
        !           135:                                FWDeviceCallback completion, void *refcon,
        !           136:                                bool failOnReset)
        !           137: {
        !           138:     IOFWWriteQuadCommand * cmd;
        !           139:     cmd = new IOFWWriteQuadCommand;
        !           140:     if(cmd) {
        !           141:         if(!cmd->initAll(fControl, this, devAddress, quads, numQuads,
        !           142:                completion, refcon, failOnReset)) {
        !           143:             cmd->release();
        !           144:             cmd = NULL;
        !           145:        }
        !           146:     }
        !           147:     return cmd;
        !           148: }
        !           149: 
        !           150: IOFWCompareAndSwapCommand *
        !           151: IOFireWireNub::createCompareAndSwapCommand(FWAddress devAddress, const UInt32 *cmpVal, const UInt32 *newVal,
        !           152:                int size, FWDeviceCallback completion, void *refcon, bool failOnReset)
        !           153: {
        !           154:     IOFWCompareAndSwapCommand * cmd;
        !           155:     cmd = new IOFWCompareAndSwapCommand;
        !           156:     if(cmd) {
        !           157:         if(!cmd->initAll(this, devAddress, cmpVal, newVal, size, completion, refcon, failOnReset)) {
        !           158:             cmd->release();
        !           159:             cmd = NULL;
        !           160:        }
        !           161:     }
        !           162:     return cmd;
        !           163: }
        !           164: 
        !           165:     /*
        !           166:      * Create local FireWire address spaces for the device to access
        !           167:      */
        !           168: IOFWPhysicalAddressSpace *IOFireWireNub::createPhysicalAddressSpace(IOMemoryDescriptor *mem)
        !           169: {
        !           170:     IOFWPhysicalAddressSpace *space;
        !           171:     space = new IOFWPhysicalAddressSpace;
        !           172:     if(!space)
        !           173:         return NULL;
        !           174:     if(!space->initWithDesc(mem)) {
        !           175:         space->release();
        !           176:         space = NULL;
        !           177:     }
        !           178:     return space;
        !           179: }
        !           180: 
        !           181: IOFWPseudoAddressSpace *IOFireWireNub::createPseudoAddressSpace(FWAddress addr, UInt32 len, 
        !           182:                                FWReadCallback reader, FWWriteCallback writer, void *refcon)
        !           183: {
        !           184:     IOFWPseudoAddressSpace *space;
        !           185:     space = new IOFWPseudoAddressSpace;
        !           186:     if(!space)
        !           187:         return NULL;
        !           188:     if(!space->initAll(addr, len, reader, writer, refcon)) {
        !           189:         space->release();
        !           190:         space = NULL;
        !           191:     }
        !           192:     return space;
        !           193: }
        !           194: 
        !           195:     /*
        !           196:      * Create commands to activate/deactivate local FireWire address spaces
        !           197:      */
        !           198: IOFWAllocAddressCommand *IOFireWireNub::createAllocAddrCommand(IOFWAddressSpace *space,
        !           199:                                FWBusCallback completion, void *refcon)
        !           200: {
        !           201:     IOFWAllocAddressCommand * cmd;
        !           202:     cmd = new IOFWAllocAddressCommand;
        !           203:     if(cmd) {
        !           204:         if(!cmd->initWithSpace(this, space, completion, refcon)) {
        !           205:             cmd->release();
        !           206:             cmd = NULL;
        !           207:        }
        !           208:     }
        !           209:     return cmd;
        !           210: }
        !           211: 
        !           212: IOFWDeallocAddressCommand *IOFireWireNub::createDeallocAddrCommand(IOFWAddressSpace *space,
        !           213:                                FWBusCallback completion, void *refcon)
        !           214: {
        !           215:     IOFWDeallocAddressCommand * cmd;
        !           216:     cmd = new IOFWDeallocAddressCommand;
        !           217:     if(cmd) {
        !           218:         if(!cmd->initWithSpace(this, space, completion, refcon)) {
        !           219:             cmd->release();
        !           220:             cmd = NULL;
        !           221:        }
        !           222:     }
        !           223:     return cmd;
        !           224: }
        !           225: 
        !           226: 
        !           227: /*
        !           228:  * Create an iterator for the device ROM
        !           229:  */
        !           230: IOReturn IOFireWireNub::CSRROMCreateIterator (CSRROMEntryIterator *pCSRROMIterator)
        !           231: {
        !           232:     CSRROMEntryIteratorRecPtr  pIteratorRec;
        !           233:     UInt32                     hdrSize;
        !           234: 
        !           235:     // Allocate memory for iterator record.
        !           236:     pIteratorRec = (CSRROMEntryIteratorRecPtr)IOMalloc (sizeof (CSRROMEntryIteratorRec));
        !           237:     if (pIteratorRec == NULL)
        !           238:         return kIOReturnNoMemory;
        !           239: 
        !           240:     // Fill in other record fields.
        !           241:     // Set relationship to descendants.
        !           242:     pIteratorRec->relationship = kIterateDescendants;
        !           243:     // Find start of root directory.
        !           244:     hdrSize = ((fROM[0] & kCSRBusInfoBlockLength) >> kCSRBusInfoBlockLengthPhase) + 1;
        !           245:     pIteratorRec->data = fROM;
        !           246:     pIteratorRec->logicalPath[0] = 0;
        !           247:     pIteratorRec->physicalPath[0] = hdrSize;
        !           248: 
        !           249:     pIteratorRec->logicalPath[1] = 0;
        !           250:     pIteratorRec->physicalPath[1] = pIteratorRec->physicalPath[0] + 1;
        !           251: 
        !           252:     pIteratorRec->pathSize = 2;
        !           253:     pIteratorRec->reset = true;
        !           254: 
        !           255:     // Return iterator.
        !           256:     *pCSRROMIterator = (CSRROMEntryIterator) pIteratorRec;
        !           257: 
        !           258:     return (kIOReturnSuccess);
        !           259: }
        !           260: 
        !           261: 
        !           262: /**
        !           263:  ** IOUserClient methods
        !           264:  **/
        !           265: 
        !           266: IOReturn IOFireWireNub::newUserClient(task_t           owningTask,
        !           267:                                       void *           /* security_id */,
        !           268:                                       UInt32           type,
        !           269:                                       IOUserClient **  handler )
        !           270: 
        !           271: {
        !           272:     IOReturn                   err = kIOReturnSuccess;
        !           273:     IOFireWireUserClient *     client;
        !           274: 
        !           275:     if( type != 11)
        !           276:         return( kIOReturnBadArgument);
        !           277: 
        !           278:     client = IOFireWireUserClient::withTask(owningTask);
        !           279: 
        !           280:     if( !client || (false == client->attach( this )) ||
        !           281:         (false == client->start( this )) ) {
        !           282:         if(client) {
        !           283:             client->detach( this );
        !           284:             client->release();
        !           285:         }
        !           286:         err = kIOReturnNoMemory;
        !           287:     }
        !           288: 
        !           289:     *handler = client;
        !           290:     return( err );
        !           291: }
        !           292: 
        !           293: 

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