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Annotation of XNU/iokit/Drivers/usb/drvAppleOHCI/AppleOHCI_Optifixes.cpp, 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) 1998 Apple Computer, Inc.  All rights reserved.
                     24:  *
                     25:  * HISTORY
                     26:  *
                     27:  */
                     28: 
                     29: 
                     30: #include "AppleOHCI.h"
                     31: #include <libkern/OSByteOrder.h>
                     32: 
                     33: #define nil (0)
                     34: 
                     35: #define super IOUSBController
                     36: #define self this
                     37: 
                     38: void AppleOHCI::DoOptiFix(OHCIEndpointDescriptorPtr pHead)
                     39: {
                     40:     OHCIEndpointDescriptorPtr pED;
                     41:     OHCIGeneralTransferDescriptorPtr pTD;
                     42:     int i = 0;
                     43: 
                     44: //  DebugStr ((ConstStr255Param) "DoOptiFix");
                     45: 
                     46:     for (i=0; i<27; i++) {
                     47:         // allocate ED
                     48:         pED = OHCIUIMAllocateED();
                     49:         pED->pLogicalNext = nil;
                     50:         //make ED and FA = 0
                     51:         pED->flags = 0;
                     52:         pTD = OHCIUIMAllocateTD();
                     53:         pED->tdQueueHeadPtr = OSSwapInt32 ((UInt32) pTD->pPhysical);
                     54:         pTD->nextTD = pED->tdQueueTailPtr;
                     55:         pTD->pEndpoint = pED;
                     56:         pTD->pType = kOHCIOptiLSBug;
                     57:         pED->tdQueueTailPtr = OSSwapInt32 ((UInt32) pTD->pPhysical);
                     58: 
                     59:         pED->nextED = pHead->nextED;
                     60:         pHead->nextED = OSSwapInt32((UInt32) pED->pPhysical);
                     61:         pHead = pED;
                     62:     }
                     63: }
                     64: 
                     65: void AppleOHCI::OptiLSHSFix(void)
                     66: {
                     67: 
                     68: //  Do Opti Errata stuff here!!!!!!
                     69:     int i;
                     70:     OHCIIntHeadPtr              pInterruptHead;
                     71:     OHCIEndpointDescriptorPtr   pControlED;
                     72:     OHCIRegistersPtr            pOHCIRegisters;
                     73:     UInt32                     controlState;
                     74: 
                     75:     pOHCIRegisters = pOHCIUIMData->pOHCIRegisters;
                     76: 
                     77:     pOHCIUIMData->OptiOn = 1;
                     78: 
                     79:     //Turn off list processing
                     80:     controlState = OSReadLittleInt32(&pOHCIRegisters->hcControl, 0);
                     81:     OSWriteLittleInt32(&pOHCIRegisters->hcControl, 0, 
                     82:        kOHCIFunctionalState_Operational << kOHCIHcControl_HCFSPhase);
                     83: 
                     84:     // wait a millisecond
                     85:     IOSleep(2);             
                     86: 
                     87:     pInterruptHead = pOHCIUIMData->pInterruptHead;
                     88: 
                     89:     // add dummy EDs to 8ms interrupts
                     90:     for ( i = 0; i< 8; i++)
                     91:         DoOptiFix(pInterruptHead[48 + i].pHead);
                     92: 
                     93:     //Assign Tail of Control to point to head of Bulk
                     94: 
                     95:     pControlED = (OHCIEndpointDescriptorPtr) pOHCIUIMData->pControlTail;
                     96:     pControlED->nextED = pOHCIRegisters->hcBulkHeadED;
                     97: 
                     98:     // add dummy EDs to end of Control
                     99:     DoOptiFix( (OHCIEndpointDescriptorPtr) pOHCIUIMData->pControlTail);
                    100: 
                    101:     // turn on everything previous but Bulk
                    102:     controlState &= ~kOHCIHcControl_BLE;
                    103:     OSWriteLittleInt32(&pOHCIRegisters->hcControl, 0, controlState);
                    104: 
                    105:     //End of Opti Fix
                    106: }

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