[BACK]Return to Sym8xxInit.cpp CVS log [TXT] [DIR] Up to [Apple XNU] / XNU / iokit / Drivers / scsi / drvSymbios8xx

Annotation of XNU/iokit/Drivers/scsi/drvSymbios8xx/Sym8xxInit.cpp, revision 1.1

1.1     ! root        1: /*
        !             2:  * Copyright (c) 1999 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: /* Sym8xxInit.m created by russb2 on Sat 30-May-1998 */
        !            24: 
        !            25: /*-----------------------------------------------------------------------------*
        !            26:  * This module contains initialization routines for the driver.
        !            27:  *
        !            28:  * Driver initialization consists of:
        !            29:  * 
        !            30:  * - Doing PCI bus initialization for the script engine PCI device.
        !            31:  * - Setting up shared communication areas in system memory between the script
        !            32:  *   and the driver.
        !            33:  * - Copying the script program into the script engine on-board ram, applying 
        !            34:  *   script relocation fixups as required.
        !            35:  * - Setting the initial register values for the script engine.
        !            36:  * - Setting up driver related storage and interfacing with driverKit.
        !            37:  *
        !            38:  *-----------------------------------------------------------------------------*/
        !            39: 
        !            40: /*
        !            41:  * This define causes Sym8xxScript.h to include the script instructions and
        !            42:  * relocation tables. Normally without this define we only will get #define
        !            43:  * values for interfacing with the script.
        !            44:  */
        !            45: #define INCL_SCRIPT_TEXT
        !            46: 
        !            47: #import "Sym8xxController.h"
        !            48: 
        !            49: #define super  IOSCSIParallelController
        !            50: 
        !            51: OSDefineMetaClassAndStructors( Sym8xxSCSIController, IOSCSIParallelController )        ;
        !            52: 
        !            53: /*-----------------------------------------------------------------------------*
        !            54:  * This structure contains most of the inital register settings for
        !            55:  * the script engine. See Sym8xxRegs.h for the actual initialization
        !            56:  * values.
        !            57:  *
        !            58:  *-----------------------------------------------------------------------------*/
        !            59: typedef struct ChipInitRegs
        !            60: {
        !            61:     UInt32             regNum;
        !            62:     UInt32             regSize;
        !            63:     UInt32             regValue;
        !            64: 
        !            65: } ChipInitRegs;
        !            66: 
        !            67: static ChipInitRegs    Sym8xxInitRegs[] =
        !            68: {
        !            69:        { SCNTL0,       SCNTL0_SIZE,    SCNTL0_INIT     },
        !            70:        { SCNTL1,       SCNTL1_SIZE,    SCNTL1_INIT     },
        !            71:         { SCNTL2,      SCNTL2_SIZE,    SCNTL2_INIT     },
        !            72:         { SCNTL3,      SCNTL3_SIZE,    SCNTL3_INIT_875 },
        !            73:         { SXFER,       SXFER_SIZE,     SXFER_INIT      },
        !            74:         { SDID,                SDID_SIZE,      SDID_INIT       },
        !            75:         { GPREG,       GPREG_SIZE,     GPREG_INIT      },
        !            76:         { SFBR,                SFBR_SIZE,      SFBR_INIT       },
        !            77:         { SOCL,        SOCL_SIZE,      SOCL_INIT       },
        !            78:         { DSA,         DSA_SIZE,       DSA_INIT        },
        !            79:         { ISTAT,       ISTAT_SIZE,     ISTAT_INIT      },
        !            80:         { TEMP,                TEMP_SIZE,      TEMP_INIT       },
        !            81:         { CTEST0,      CTEST0_SIZE,    CTEST0_INIT     },
        !            82:         { CTEST3,      CTEST3_SIZE,    CTEST3_INIT_A   },
        !            83:         { CTEST4,      CTEST4_SIZE,    CTEST4_INIT     },
        !            84:         { CTEST5,      CTEST5_SIZE,    CTEST5_INIT_A_revB},
        !            85:         { DBC,         DBC_SIZE,       DBC_INIT        },
        !            86:         { DCMD,                DCMD_SIZE,      DCMD_INIT       },
        !            87:         { DNAD,                DNAD_SIZE,      DNAD_INIT       },
        !            88:        { DSPS,         DSPS_SIZE,      DSPS_INIT       },
        !            89:        { SCRATCHA,     SCRATCHA_SIZE,  SCRATCHA_INIT   },
        !            90:         { DMODE,       DMODE_SIZE,     DMODE_INIT_A    },
        !            91:         { DIEN,                DIEN_SIZE,      DIEN_INIT       },
        !            92:         { DWT,         DWT_SIZE,       DWT_INIT        },
        !            93:         { DCNTL,       DCNTL_SIZE,     DCNTL_INIT_A    },
        !            94:         { SIEN,                SIEN_SIZE,      SIEN_INIT       },
        !            95:         { SLPAR,       SLPAR_SIZE,     SLPAR_INIT      },
        !            96:         { MACNTL,      MACNTL_SIZE,    MACNTL_INIT     },
        !            97:         { GPCNTL,      GPCNTL_SIZE,    GPCNTL_INIT     },
        !            98:         { STIME0,      STIME0_SIZE,    STIME0_INIT     },
        !            99:         { STIME1,      STIME1_SIZE,    STIME1_INIT     },
        !           100:         { RESPID0,     RESPID0_SIZE,   RESPID0_INIT    },
        !           101:         { RESPID1,     RESPID1_SIZE,   RESPID1_INIT    },
        !           102:         { STEST2,      STEST2_SIZE,    STEST2_INIT     },
        !           103:         { STEST3,      STEST3_SIZE,    STEST3_INIT     },
        !           104:         { SODL,                SODL_SIZE,      SODL_INIT       },
        !           105:         { SCRATCHB,    SCRATCHB_SIZE,  SCRATCHB_INIT   }
        !           106: };
        !           107: 
        !           108: /*-----------------------------------------------------------------------------*
        !           109:  *  
        !           110:  *
        !           111:  *-----------------------------------------------------------------------------*/
        !           112: bool Sym8xxSCSIController::configure( IOService *forProvider, SCSIControllerInfo *controllerInfo )
        !           113: {
        !           114:     provider = (IOPCIDevice *)forProvider;
        !           115: 
        !           116:     if ( Sym8xxInit() == false )
        !           117:     {
        !           118:         return false;
        !           119:     }
        !           120: 
        !           121:     initialReset = true;
        !           122: 
        !           123:     Sym8xxSCSIBusReset( 0 );
        !           124:     IOSleep(3000);
        !           125: 
        !           126:     controllerInfo->initiatorId                        = 7;
        !           127: 
        !           128:     controllerInfo->maxTargetsSupported                = 16;
        !           129:     controllerInfo->maxLunsSupported           = 8;
        !           130: 
        !           131:     controllerInfo->minTransferPeriodpS                = (chipId == kChipIdSym875) ? 50000 : 0;
        !           132:     controllerInfo->maxTransferOffset          = (chipId == kChipIdSym875) ? 16    : 0;
        !           133:     controllerInfo->maxTransferWidth           = 2;
        !           134: 
        !           135:     controllerInfo->maxCommandsPerController   = 0;
        !           136:     controllerInfo->maxCommandsPerTarget       = 0;
        !           137:     controllerInfo->maxCommandsPerLun          = 0;
        !           138: 
        !           139:     controllerInfo->tagAllocationMethod                = kTagAllocationPerController;
        !           140:     controllerInfo->maxTags                    = 128;
        !           141: 
        !           142:     controllerInfo->commandPrivateDataSize     = sizeof( SRB );
        !           143:     controllerInfo->targetPrivateDataSize      = 0;
        !           144:     controllerInfo->lunPrivateDataSize         = 0;
        !           145: 
        !           146:     controllerInfo->disableCancelCommands      = false;
        !           147: 
        !           148:     return true;
        !           149: }
        !           150: 
        !           151: 
        !           152: /*-----------------------------------------------------------------------------*
        !           153:  * Script Initialization
        !           154:  *
        !           155:  *-----------------------------------------------------------------------------*/
        !           156: bool Sym8xxSCSIController::Sym8xxInit()
        !           157: {
        !           158:     /*
        !           159:      * Perform PCI related initialization
        !           160:      */
        !           161:     if ( Sym8xxInitPCI() == false )
        !           162:     { 
        !           163:         return false;
        !           164:     }
        !           165: 
        !           166:     /*
        !           167:      * Allocate/initialize driver resources
        !           168:      */
        !           169:     if ( Sym8xxInitVars() == false )
        !           170:     {
        !           171:         return false;
        !           172:     }
        !           173: 
        !           174:     /*
        !           175:      * Initialize the script engine registers
        !           176:      */
        !           177:     if ( Sym8xxInitChip() == false )
        !           178:     {
        !           179:         return false;
        !           180:     }
        !           181: 
        !           182:     /* 
        !           183:      * Apply fixups to script and copy script to script engine's on-board ram
        !           184:      */
        !           185:     if ( Sym8xxInitScript() == false )
        !           186:     {
        !           187:         return false;
        !           188:     }
        !           189: 
        !           190:     getWorkLoop()->enableAllInterrupts();
        !           191: 
        !           192:     /*
        !           193:      * Start script execution
        !           194:      */
        !           195:     Sym8xxWriteRegs( chipBaseAddr, DSP, DSP_SIZE, (UInt32) &chipRamAddrPhys[Ent_select_phase] );
        !           196: 
        !           197:     return true;
        !           198: }
        !           199: 
        !           200: /*-----------------------------------------------------------------------------*
        !           201:  * Script engine PCI initialization
        !           202:  *
        !           203:  * This routine determines the chip version/revision, enables the chip address
        !           204:  * ranges and allocates a virtual mapping to the script engine's registers and
        !           205:  * on-board ram.
        !           206:  *-----------------------------------------------------------------------------*/
        !           207: bool Sym8xxSCSIController::Sym8xxInitPCI()
        !           208: {
        !           209:     unsigned long      pciReg0, pciReg8;
        !           210:     UInt32             chipRev;
        !           211:     UInt32             n;
        !           212:     UInt32             ramReg;
        !           213:     OSString           *matchEntry;
        !           214: 
        !           215: 
        !           216:     /*
        !           217:      * Determine the number of memory ranges for the PCI device.
        !           218:      * 
        !           219:      * The hardware implementation may or may not have a ROM present
        !           220:      * accounting for the difference in the number of ranges.
        !           221:      */
        !           222:     n = provider->getDeviceMemoryCount();
        !           223:     if ( !( n == 3  ||  n == 4 )  )
        !           224:     {
        !           225:         return false;
        !           226:     }
        !           227: 
        !           228:     /*
        !           229:      * Determine the hardware version. Check the deviceID and
        !           230:      * RevID in the PCI config regs.
        !           231:      */
        !           232:     pciReg0 = provider->configRead32( 0x00 );
        !           233:     pciReg8 = provider->configRead32( 0x08 ); 
        !           234: 
        !           235:     chipId  = pciReg0 >> 16;
        !           236:     chipRev = pciReg8 & 0xff;
        !           237: 
        !           238: //    IOLog( "SCSI(Symbios8xx): Chip Id = %04x Chip rev = %02x\n\r", chipId, chipRev );
        !           239: 
        !           240: 
        !           241:     ioMapRegs = provider->mapDeviceMemoryWithRegister( 0x14 );
        !           242:     if ( ioMapRegs == 0 )
        !           243:     {
        !           244:         return false;
        !           245:     }
        !           246: 
        !           247:     switch ( chipId )
        !           248:     {
        !           249:         case kChipIdSym875:
        !           250:             ramReg = 0x18;
        !           251:             break;
        !           252: 
        !           253:         case kChipIdSym895:
        !           254:         case kChipIdSym896:
        !           255:             ramReg = 0x1C;
        !           256:             break;
        !           257: 
        !           258:         default:
        !           259:             ramReg = 0x1C;
        !           260:     }
        !           261: 
        !           262:     ioMapRam = provider->mapDeviceMemoryWithRegister( ramReg );
        !           263:     if ( ioMapRam == 0 )
        !           264:     {
        !           265:         return false;
        !           266:     }
        !           267: 
        !           268:     /*
        !           269:      * Assume 80Mhz external clock rate for motherboard 875 implementations
        !           270:      * and 40Mhz for others.
        !           271:      */
        !           272:     matchEntry = OSDynamicCast( OSString, getProperty( gIONameMatchedKey ) );
        !           273:     if ( matchEntry == 0 )
        !           274:     {
        !           275:         IOLog("SCSI(Sym8xx): Cannot obtain matching property.\n");
        !           276:         return false;
        !           277:     }
        !           278: 
        !           279:     if ( matchEntry->isEqualTo( "apple53C8xx" ) == true )
        !           280:     {
        !           281:       chipClockRate = CLK_80MHz;
        !           282:     }
        !           283:     else
        !           284:     {
        !           285:       chipClockRate = CLK_40MHz;
        !           286:     }
        !           287: 
        !           288:     /*
        !           289:      * BUS MASTER, MEM I/O Space, MEM WR & INV
        !           290:      */
        !           291:     provider->configWrite32( 0x04, 0x16 );
        !           292: 
        !           293:     /*
        !           294:      *  set Latency to Max , cache 32
        !           295:      */
        !           296:     provider->configWrite32( 0x0C, 0x2008 );
        !           297: 
        !           298:     /*
        !           299:      * get chip register block mapped into pci memory
        !           300:      */
        !           301:     chipBaseAddr        = (UInt8 *)ioMapRegs->getVirtualAddress();
        !           302:     chipBaseAddrPhys   = (UInt8 *)ioMapRegs->getPhysicalAddress();
        !           303: 
        !           304: //  kprintf( "SCSI(Symbios8xx): Chip Base addr = %08x(p) %08x(v)\n\r", 
        !           305: //          (UInt32)chipBaseAddrPhys, (UInt32)chipBaseAddr );
        !           306: 
        !           307:     chipRamAddr        = (UInt8 *)ioMapRam->getVirtualAddress();
        !           308:     chipRamAddrPhys    = (UInt8 *)ioMapRam->getPhysicalAddress();
        !           309: 
        !           310: //  kprintf( "SCSI(Symbios8xx): Chip Ram  addr = %08x(p) %08x(v)\n\r",  
        !           311: //           (UInt32)chipRamAddrPhys,  (UInt32)chipRamAddr );
        !           312: 
        !           313:     /*
        !           314:      * Attach interrupt
        !           315:      */
        !           316:     interruptEvent = IOInterruptEventSource::interruptEventSource(
        !           317:             (OSObject *)             this,
        !           318:             (IOInterruptEventAction) &Sym8xxSCSIController::interruptOccurred,
        !           319:             (IOService *)            provider,
        !           320:             (int)                    0 );
        !           321: 
        !           322:     if ( interruptEvent == NULL )
        !           323:     {
        !           324:         return false;
        !           325:     }
        !           326: 
        !           327:     getWorkLoop()->addEventSource( interruptEvent );
        !           328:  
        !           329:     interruptEvent->enable();
        !           330: 
        !           331:     /*
        !           332:      * 
        !           333:      */
        !           334:     memoryCursor = IOBigMemoryCursor::withSpecification( 16*1024*1024, 0xffffffff );
        !           335:     if ( memoryCursor == NULL )
        !           336:     {
        !           337:         return false;
        !           338:     }
        !           339: 
        !           340: 
        !           341: 
        !           342:     return true;
        !           343: }
        !           344: 
        !           345: /*-----------------------------------------------------------------------------*
        !           346:  * This routine allocates/initializes shared memory for communication between 
        !           347:  * the script and the driver. In addition other driver resources semaphores, 
        !           348:  * queues are initialized here.
        !           349:  *
        !           350:  *-----------------------------------------------------------------------------*/
        !           351: bool Sym8xxSCSIController::Sym8xxInitVars()
        !           352: {
        !           353:     UInt32                     i;
        !           354: 
        !           355:     adapter = (AdapterInterface *)IOMallocContiguous( page_size, page_size, (IOPhysicalAddress *)&adapterPhys );
        !           356:     if ( adapter == 0 )
        !           357:     {
        !           358:         return false;
        !           359:     }
        !           360:     bzero( adapter, page_size );
        !           361: 
        !           362:     /*
        !           363:      * We keep two copies of the Nexus pointer array. One contains physical addresses and
        !           364:      * is located in the script/driver shared storage. The other copy holds the corresponding
        !           365:      * virtual addresses to the active Nexus structures and is located in the drivers instance
        !           366:      * data.
        !           367:      * Both tables can be accessed through indirect pointers in the script/driver communication
        !           368:      * area. This is the preferred method to access these arrays.
        !           369:      */ 
        !           370:     adapter->nexusPtrsVirt = (Nexus **)nexusArrayVirt;
        !           371:     adapter->nexusPtrsPhys = (Nexus **)adapter->nexusArrayPhys;
        !           372: 
        !           373:     for (i=0; i < MAX_SCSI_TAG; i ++ )
        !           374:     {
        !           375:         adapter->nexusPtrsVirt[i] = (Nexus *) -1;
        !           376:         adapter->nexusPtrsPhys[i] = (Nexus *) -1;
        !           377:     }
        !           378:  
        !           379:     /*
        !           380:      * The script/driver communication area also contains a 16-entry table clock
        !           381:      * settings for each target.
        !           382:      */ 
        !           383:     for (i=0; i < MAX_SCSI_TARGETS; i++ )
        !           384:     {
        !           385:         adapter->targetClocks[i].scntl3Reg = SCNTL3_INIT_875;
        !           386:     }
        !           387: 
        !           388: 
        !           389:     return true;
        !           390: }
        !           391: 
        !           392: 
        !           393: /*-----------------------------------------------------------------------------*
        !           394:  * This routine makes a temporary copy of the script program, applies script fixups,
        !           395:  * initializes the script local data table at the top of the script image, and
        !           396:  * copies the modified script image to the script engine's on-board ram.
        !           397:  *
        !           398:  *-----------------------------------------------------------------------------*/
        !           399: bool Sym8xxSCSIController::Sym8xxInitScript()
        !           400: {
        !           401:     UInt32             i;
        !           402:     UInt32             scriptPgm[sizeof(BSC_SCRIPT)/sizeof(UInt32)];
        !           403: 
        !           404:     /*
        !           405:      * Make a copy of the script
        !           406:      */
        !           407:     bcopy( BSC_SCRIPT, scriptPgm, sizeof(scriptPgm) );
        !           408:     bzero( scriptPgm, R_ld_size );
        !           409: 
        !           410:     /*
        !           411:      * Apply fixups to the script copy
        !           412:      */
        !           413:     for ( i=0; i < sizeof(Rel_Patches)/sizeof(UInt32); i++ )
        !           414:     {
        !           415:         scriptPgm[Rel_Patches[i]] += (UInt32)chipRamAddrPhys;
        !           416:     }
        !           417:     for ( i=0; i < sizeof(LABELPATCHES)/sizeof(UInt32); i++ )
        !           418:     {
        !           419:         scriptPgm[LABELPATCHES[i]] += (UInt32)chipRamAddrPhys;
        !           420:     }
        !           421:  
        !           422:     /*
        !           423:      * Initialize the script working variables with pointers to the script/driver
        !           424:      * communications area.
        !           425:      */
        !           426:     scriptPgm[R_ld_sched_mlbx_base_adr >> 2]   = (UInt32)&adapterPhys->schedMailBox;
        !           427:     scriptPgm[R_ld_nexus_array_base >> 2]      = (UInt32)&adapterPhys->nexusArrayPhys;
        !           428:     scriptPgm[R_ld_device_table_base_adr >> 2]         = (UInt32)&adapterPhys->targetClocks;
        !           429: 
        !           430:     /*
        !           431:      * Load the script image into the script engine's on-board ram.
        !           432:      */
        !           433:     Sym8xxLoadScript( (UInt32 *)scriptPgm, sizeof(scriptPgm)/sizeof(UInt32) );
        !           434: 
        !           435:     return true;
        !           436: }
        !           437: 
        !           438: 
        !           439: /*-----------------------------------------------------------------------------*
        !           440:  * This routine transfers the script program image into the script engine's
        !           441:  * on-board ram
        !           442:  *
        !           443:  *-----------------------------------------------------------------------------*/
        !           444: void Sym8xxSCSIController::Sym8xxLoadScript( UInt32 *scriptPgm,  UInt32 scriptWords )
        !           445: {
        !           446:     UInt32                     i;
        !           447:     volatile UInt32            *ramPtr = (volatile UInt32 *)chipRamAddr;
        !           448: 
        !           449:     for ( i = 0; i < scriptWords; i++ )
        !           450:     {
        !           451:         ramPtr[i] = OSSwapHostToLittleInt32(scriptPgm[i]);
        !           452:     }
        !           453: }
        !           454: 
        !           455: /*-----------------------------------------------------------------------------*
        !           456:  * This routine initializes the script engine's register block.
        !           457:  *
        !           458:  *-----------------------------------------------------------------------------*/
        !           459: bool Sym8xxSCSIController::Sym8xxInitChip()
        !           460: {
        !           461:     UInt32                     i;
        !           462: 
        !           463:     /*
        !           464:      * Reset the script engine
        !           465:      */
        !           466:     Sym8xxWriteRegs( chipBaseAddr, ISTAT, ISTAT_SIZE, RST );
        !           467:     IODelay( 25 );
        !           468:     Sym8xxWriteRegs( chipBaseAddr, ISTAT, ISTAT_SIZE, ISTAT_INIT );
        !           469:   
        !           470:     /*
        !           471:      * Load our canned register values into the script engine
        !           472:      */
        !           473:     for ( i = 0; i < sizeof(Sym8xxInitRegs)/sizeof(ChipInitRegs); i++ )
        !           474:     {
        !           475:         Sym8xxWriteRegs( chipBaseAddr, Sym8xxInitRegs[i].regNum, Sym8xxInitRegs[i].regSize, Sym8xxInitRegs[i].regValue );
        !           476:         IODelay( 10 );
        !           477:     }
        !           478: 
        !           479:     /*
        !           480:      * For hardware implementations that have a 40Mhz SCLK input, we enable the chip's on-board
        !           481:      * clock doubler to bring the clock rate upto 80Mhz which is required for Ultra-SCSI timings.
        !           482:      */
        !           483:     if ( chipClockRate == CLK_40MHz )
        !           484:     {
        !           485:         /*
        !           486:          *   Clock doubler setup for 875 (rev 3 and above).
        !           487:          */
        !           488:         /* set clock doubler enabler bit */
        !           489:         Sym8xxWriteRegs( chipBaseAddr, STEST1, STEST1_SIZE, STEST1_INIT | DBLEN);
        !           490:         IODelay(30);  
        !           491:         /* halt scsi clock */
        !           492:         Sym8xxWriteRegs( chipBaseAddr, STEST3, STEST3_SIZE, STEST3_INIT | HSC );
        !           493:         IODelay(10);
        !           494:         Sym8xxWriteRegs( chipBaseAddr, SCNTL3, SCNTL3_SIZE, SCNTL3_INIT_875);
        !           495:         IODelay(10);
        !           496:         /* set clock doubler select bit */
        !           497:         Sym8xxWriteRegs( chipBaseAddr, STEST1, STEST1_SIZE, STEST1_INIT | DBLEN | DBLSEL);
        !           498:         IODelay(10);
        !           499:         /* clear hold on scsi clock */
        !           500:         Sym8xxWriteRegs( chipBaseAddr, STEST3, STEST3_SIZE, STEST3_INIT);
        !           501:     }
        !           502: 
        !           503:     /*  
        !           504:      * Set our host-adapter ID in the script engine's registers
        !           505:      */
        !           506:     initiatorID = kHostAdapterSCSIId;
        !           507: 
        !           508:     if ( initiatorID > 7 )
        !           509:     {
        !           510:         Sym8xxWriteRegs( chipBaseAddr, RESPID1, RESPID1_SIZE, 1 << (initiatorID-8));
        !           511:     }
        !           512:     else
        !           513:     {
        !           514:         Sym8xxWriteRegs( chipBaseAddr, RESPID0, RESPID0_SIZE, 1 << initiatorID);
        !           515:     }
        !           516: 
        !           517:     Sym8xxWriteRegs( chipBaseAddr, SCID, SCID_SIZE, SCID_INIT | initiatorID );
        !           518: 
        !           519:     return true;
        !           520: }
        !           521: 
        !           522: 
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