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Annotation of XNU/iokit/Families/IOUSBBus/IOUSBController_Errata.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) 1998 Apple Computer, Inc.  All rights reserved.
        !            24:  *
        !            25:  * HISTORY
        !            26:  * 08 Dec 98 ehewitt created.
        !            27:  *
        !            28:  */
        !            29: 
        !            30: #include <IOKit/system.h>
        !            31: 
        !            32: 
        !            33: #include <IOKit/usb/IOUSBController.h>
        !            34: 
        !            35: #define super IOUSBBus
        !            36: #define self this
        !            37: 
        !            38: /*
        !            39:  This table contains the list of errata that are necessary for known
        !            40:  problems with particular silicon.  The format is vendorID, revisionID,
        !            41:  lowest revisionID needing errata, highest rev needing errata, errataBits.
        !            42:  The result of all matches is ORed together, so more than one entry may
        !            43:  match.  Typically for a given errata a list of chips revisions that
        !            44:  this applies to is supplied.
        !            45:  */
        !            46: static ErrataListEntry  errataList[] = {
        !            47:     // CMD 670
        !            48:     {0x1095, 0x670, 0, 0xffff, kErrataCMDDisableTestMode |
        !            49:                                kErrataOnlySinglePageTransfers |
        !            50:                                kErrataRetryBufferUnderruns},
        !            51:     // Opti 1045
        !            52:     {0x1045, 0xc861, 0, 0xffff, kErrataLSHSOpti},
        !            53: };
        !            54: 
        !            55: #define errataListLength (sizeof(errataList)/sizeof(ErrataListEntry))
        !            56: 
        !            57: UInt32 IOUSBController::GetErrataBits(UInt16 vendorID, UInt16 deviceID, UInt16 revisionID)
        !            58: {
        !            59:     ErrataListEntry    *entryPtr;
        !            60:     UInt32             i, errata = 0;
        !            61: 
        !            62:     for(i = 0, entryPtr = errataList; i < errataListLength; i++, entryPtr++)
        !            63:     {
        !            64:         if (vendorID == entryPtr->vendID &&
        !            65:             deviceID == entryPtr->deviceID &&
        !            66:             revisionID >= entryPtr->revisionLo &&
        !            67:             revisionID <= entryPtr->revisionHi)
        !            68:         {
        !            69:             // we match, add this errata to our list
        !            70:             errata |= entryPtr->errata;
        !            71:         }
        !            72:     }
        !            73:     return(errata);
        !            74: }       
        !            75: 
        !            76: 

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