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Annotation of kernel/bsd/dev/ppc/drvSymbios8xx/Sym8xxInit.m, 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:  * Portions Copyright (c) 1999 Apple Computer, Inc.  All Rights
        !             7:  * Reserved.  This file contains Original Code and/or Modifications of
        !             8:  * Original Code as defined in and that are subject to the Apple Public
        !             9:  * Source License Version 1.1 (the "License").  You may not use this file
        !            10:  * except in compliance with the License.  Please obtain a copy of the
        !            11:  * License at http://www.apple.com/publicsource and read it before using
        !            12:  * this file.
        !            13:  * 
        !            14:  * The Original Code and all software distributed under the License are
        !            15:  * distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY KIND, EITHER
        !            16:  * EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES,
        !            17:  * INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY,
        !            18:  * FITNESS FOR A PARTICULAR PURPOSE OR NON-INFRINGEMENT.  Please see the
        !            19:  * License for the specific language governing rights and limitations
        !            20:  * under the License.
        !            21:  * 
        !            22:  * @APPLE_LICENSE_HEADER_END@
        !            23:  */
        !            24: 
        !            25: /* Sym8xxInit.m created by russb2 on Sat 30-May-1998 */
        !            26: 
        !            27: /*-----------------------------------------------------------------------------*
        !            28:  * This module contains initialization routines for the driver.
        !            29:  *
        !            30:  * Driver initialization consists of:
        !            31:  * 
        !            32:  * - Doing PCI bus initialization for the script engine PCI device.
        !            33:  * - Setting up shared communication areas in system memory between the script
        !            34:  *   and the driver.
        !            35:  * - Copying the script program into the script engine on-board ram, applying 
        !            36:  *   script relocation fixups as required.
        !            37:  * - Setting the initial register values for the script engine.
        !            38:  * - Setting up driver related storage and interfacing with driverKit.
        !            39:  *
        !            40:  *-----------------------------------------------------------------------------*/
        !            41: 
        !            42: /*
        !            43:  * This define causes Sym8xxScript.h to include the script instructions and
        !            44:  * relocation tables. Normally without this define we only will get #define
        !            45:  * values for interfacing with the script.
        !            46:  */
        !            47: #define INCL_SCRIPT_TEXT
        !            48: 
        !            49: #import "Sym8xxController.h"
        !            50: 
        !            51: /*-----------------------------------------------------------------------------*
        !            52:  * This structure contains most of the inital register settings for
        !            53:  * the script engine. See Sym8xxRegs.h for the actual initialization
        !            54:  * values.
        !            55:  *
        !            56:  *-----------------------------------------------------------------------------*/
        !            57: typedef struct ChipInitRegs
        !            58: {
        !            59:     u_int32_t          regNum;
        !            60:     u_int32_t          regSize;
        !            61:     u_int32_t          regValue;
        !            62: 
        !            63: } ChipInitRegs;
        !            64: 
        !            65: static ChipInitRegs    Sym8xxInitRegs[] =
        !            66: {
        !            67:        { SCNTL0,       SCNTL0_SIZE,    SCNTL0_INIT     },
        !            68:        { SCNTL1,       SCNTL1_SIZE,    SCNTL1_INIT     },
        !            69:         { SCNTL2,      SCNTL2_SIZE,    SCNTL2_INIT     },
        !            70:         { SCNTL3,      SCNTL3_SIZE,    SCNTL3_INIT_875 },
        !            71:         { SXFER,       SXFER_SIZE,     SXFER_INIT      },
        !            72:         { SDID,                SDID_SIZE,      SDID_INIT       },
        !            73:         { GPREG,       GPREG_SIZE,     GPREG_INIT      },
        !            74:         { SFBR,                SFBR_SIZE,      SFBR_INIT       },
        !            75:         { SOCL,        SOCL_SIZE,      SOCL_INIT       },
        !            76:         { DSA,         DSA_SIZE,       DSA_INIT        },
        !            77:         { ISTAT,       ISTAT_SIZE,     ISTAT_INIT      },
        !            78:         { TEMP,                TEMP_SIZE,      TEMP_INIT       },
        !            79:         { CTEST0,      CTEST0_SIZE,    CTEST0_INIT     },
        !            80:         { CTEST3,      CTEST3_SIZE,    CTEST3_INIT_A   },
        !            81:         { CTEST4,      CTEST4_SIZE,    CTEST4_INIT     },
        !            82:         { CTEST5,      CTEST5_SIZE,    CTEST5_INIT_A_revB},
        !            83:         { DBC,         DBC_SIZE,       DBC_INIT        },
        !            84:         { DCMD,                DCMD_SIZE,      DCMD_INIT       },
        !            85:         { DNAD,                DNAD_SIZE,      DNAD_INIT       },
        !            86:        { DSPS,         DSPS_SIZE,      DSPS_INIT       },
        !            87:        { SCRATCHA,     SCRATCHA_SIZE,  SCRATCHA_INIT   },
        !            88:         { DMODE,       DMODE_SIZE,     DMODE_INIT_A    },
        !            89:         { DIEN,                DIEN_SIZE,      DIEN_INIT       },
        !            90:         { DWT,         DWT_SIZE,       DWT_INIT        },
        !            91:         { DCNTL,       DCNTL_SIZE,     DCNTL_INIT_A    },
        !            92:         { SIEN,                SIEN_SIZE,      SIEN_INIT       },
        !            93:         { SLPAR,       SLPAR_SIZE,     SLPAR_INIT      },
        !            94:         { MACNTL,      MACNTL_SIZE,    MACNTL_INIT     },
        !            95:         { GPCNTL,      GPCNTL_SIZE,    GPCNTL_INIT     },
        !            96:         { STIME0,      STIME0_SIZE,    STIME0_INIT     },
        !            97:         { STIME1,      STIME1_SIZE,    STIME1_INIT     },
        !            98:         { RESPID0,     RESPID0_SIZE,   RESPID0_INIT    },
        !            99:         { RESPID1,     RESPID1_SIZE,   RESPID1_INIT    },
        !           100:         { STEST2,      STEST2_SIZE,    STEST2_INIT     },
        !           101:         { STEST3,      STEST3_SIZE,    STEST3_INIT     },
        !           102:         { SODL,                SODL_SIZE,      SODL_INIT       },
        !           103:         { SCRATCHB,    SCRATCHB_SIZE,  SCRATCHB_INIT   }
        !           104: };
        !           105: 
        !           106: 
        !           107: @implementation Sym8xxController(Init)
        !           108: 
        !           109: /*-----------------------------------------------------------------------------*
        !           110:  *  Probe, configure board and init new instance.
        !           111:  *
        !           112:  *-----------------------------------------------------------------------------*/
        !           113: + (BOOL)probe:(IOPCIDevice *)deviceDescription
        !           114: {
        !           115:     Sym8xxController   *sym8xx = [self alloc];
        !           116: 
        !           117: //  call_kdp();        
        !           118:     return ([sym8xx initFromDeviceDescription: deviceDescription] ? YES : NO);         
        !           119: }
        !           120: 
        !           121: /*-----------------------------------------------------------------------------*
        !           122:  *
        !           123:  *
        !           124:  *-----------------------------------------------------------------------------*/
        !           125: - initFromDeviceDescription:(IOPCIDevice *) deviceDescription
        !           126: {
        !           127: 
        !           128:     if ( [super initFromDeviceDescription:deviceDescription] == nil)
        !           129:     {
        !           130:       goto abort;
        !           131:     }
        !           132: 
        !           133:     if ( [self Sym8xxInit: deviceDescription] == NO )
        !           134:     {
        !           135:       goto abort;
        !           136:     }
        !           137: 
        !           138:     /*
        !           139:      *  
        !           140:      */
        !           141:     interruptPortKern = IOConvertPort( [self interruptPort],
        !           142:                                         IO_KernelIOTask,
        !           143:                                         IO_Kernel);
        !           144: 
        !           145:     Sym8xxTimerReq( self );
        !           146: 
        !           147:     [self resetSCSIBus];
        !           148: 
        !           149:     /*
        !           150:      *  Now that everything has succeeded, enable interrupts, and go,
        !           151:      */
        !           152:     [self registerDevice];     
        !           153:     return self;
        !           154: 
        !           155: abort:
        !           156:     [self free];
        !           157:     return NULL;
        !           158: }
        !           159: 
        !           160: /*-----------------------------------------------------------------------------*
        !           161:  * Script Initialization
        !           162:  *
        !           163:  *-----------------------------------------------------------------------------*/
        !           164: - (BOOL) Sym8xxInit:(IOPCIDevice *)deviceDescription
        !           165: {
        !           166:     /*
        !           167:      * Perform PCI related initialization
        !           168:      */
        !           169:     if ( [self Sym8xxInitPCI: (IOPCIDevice *)deviceDescription] == NO )
        !           170:     { 
        !           171:         return NO;
        !           172:     }
        !           173: 
        !           174:     /*
        !           175:      * Allocate/initialize driver resources
        !           176:      */
        !           177:     if ( [self Sym8xxInitVars] == NO )
        !           178:     {
        !           179:         return NO;
        !           180:     }
        !           181: 
        !           182:     /*
        !           183:      * Initialize the script engine registers
        !           184:      */
        !           185:     if ( [self Sym8xxInitChip] == NO )
        !           186:     {
        !           187:         return NO;
        !           188:     }
        !           189: 
        !           190:     /* 
        !           191:      * Apply fixups to script and copy script to script engine's on-board ram
        !           192:      */
        !           193:     if ( [self Sym8xxInitScript] == NO )
        !           194:     {
        !           195:         return NO;
        !           196:     }
        !           197: 
        !           198:     [self enableAllInterrupts];
        !           199: 
        !           200:     /*
        !           201:      * Start script execution
        !           202:      */
        !           203:     Sym8xxWriteRegs( chipBaseAddr, DSP, DSP_SIZE, (u_int32_t) &chipRamAddrPhys[Ent_select_phase] );
        !           204: 
        !           205:     return YES;
        !           206: }
        !           207: 
        !           208: /*-----------------------------------------------------------------------------*
        !           209:  * Script engine PCI initialization
        !           210:  *
        !           211:  * This routine determines the chip version/revision, enables the chip address
        !           212:  * ranges and allocates a virtual mapping to the script engine's registers and
        !           213:  * on-board ram.
        !           214:  *-----------------------------------------------------------------------------*/
        !           215: - (BOOL) Sym8xxInitPCI: (IOPCIDevice *)deviceDescription
        !           216: {
        !           217:     IORange            *ioRange;
        !           218:     unsigned long      pciReg0, pciReg8;
        !           219:     u_int32_t          chipRev;
        !           220:     u_int32_t          pciRamSlot=-1, pciRegSlot=-1;
        !           221:     u_int32_t          n;
        !           222: 
        !           223:     /*
        !           224:      * Determine the number of memory ranges for the PCI device.
        !           225:      * 
        !           226:      * The hardware implementation may or may not have a ROM present
        !           227:      * accounting for the difference in the number of ranges.
        !           228:      */
        !           229:     n = [deviceDescription numMemoryRanges];
        !           230:     if ( !( n == 3  ||  n == 4 )  )
        !           231:     {
        !           232:       return NO;
        !           233:     }
        !           234: 
        !           235:     /*
        !           236:      * Determine the hardware version. Check the deviceID and
        !           237:      * RevID in the PCI config regs.
        !           238:      */
        !           239:     ioRange = [deviceDescription memoryRangeList];
        !           240: 
        !           241:     [deviceDescription configReadLong:0x00 value:&pciReg0];
        !           242:     [deviceDescription configReadLong:0x08 value:&pciReg8];
        !           243: 
        !           244:     chipRev = pciReg8 & 0xff;
        !           245: 
        !           246:     if ( (pciReg0 & 0xf0000) == 0xf0000 )
        !           247:     {
        !           248:       chipType = 0x875;
        !           249:     }
        !           250:     else
        !           251:     {
        !           252:       chipType = 0x825;
        !           253:       return NO;
        !           254:     }
        !           255: 
        !           256:     kprintf( "SCSI(Symbios8xx): Chip type = %04x Chip rev = %02x\n\r", chipType, chipRev );
        !           257: 
        !           258:     /*
        !           259:      * Assume 80Mhz external clock rate for motherboard 875 implementations
        !           260:      * and 40Mhz for others.
        !           261:      */
        !           262:     if ( !strcmp([deviceDescription nodeName], "apple53C8xx") )
        !           263:     {
        !           264:       chipClockRate = CLK_80MHz;
        !           265:     }
        !           266:     else
        !           267:     {
        !           268:       chipClockRate = CLK_40MHz;
        !           269:     }
        !           270: 
        !           271:     /*
        !           272:      * BUS MASTER, MEM I/O Space, MEM WR & INV
        !           273:      */
        !           274:     [deviceDescription configWriteLong:0x04 value:0x16];
        !           275: 
        !           276:     /*
        !           277:      *  set Latency to Max , cache 32
        !           278:      */
        !           279:     [deviceDescription configWriteLong:0x0C value:0x2008];
        !           280: 
        !           281:     switch ( n )
        !           282:     {
        !           283:       case 3:
        !           284:         pciRegSlot = 2;
        !           285:         pciRamSlot = 1;
        !           286:         break;
        !           287:       case 4:
        !           288:         pciRegSlot = 3;
        !           289:         pciRamSlot = 2;
        !           290:     }
        !           291: 
        !           292:     /*
        !           293:      * get chip register block mapped into pci memory
        !           294:      */
        !           295:     ioRange[pciRegSlot].size = round_page(ioRange[pciRegSlot].size);
        !           296:     [deviceDescription setMemoryRangeList: ioRange num: n];
        !           297:     ioRange = [deviceDescription memoryRangeList];
        !           298: 
        !           299:     chipBaseAddrPhys   = (u_int8_t *)ioRange[pciRegSlot].start;
        !           300:     [self mapMemoryRange: pciRegSlot to:(vm_address_t *)&chipBaseAddr findSpace:YES cache:IO_CacheOff];
        !           301: 
        !           302:     kprintf( "SCSI(Symbios8xx): Chip Base addr = %08x(p) %08x(v)\n\r", 
        !           303:             (u_int32_t)chipBaseAddrPhys, (u_int32_t)chipBaseAddr );
        !           304: 
        !           305:     chipRamAddrPhys    = (u_int8_t *)ioRange[pciRamSlot].start;
        !           306:     [self mapMemoryRange: pciRamSlot to:(vm_address_t *)&chipRamAddr findSpace:YES cache:IO_CacheOff];
        !           307: 
        !           308:     kprintf( "SCSI(Symbios8xx): Chip Ram  addr = %08x(p) %08x(v)\n\r",  
        !           309:             (u_int32_t)chipRamAddrPhys,  (u_int32_t)chipRamAddr );
        !           310: 
        !           311:     /*
        !           312:      * Setup pointers to the script engine's registers and on-board ram for
        !           313:      * inspection by the kernel mini-mon utility.
        !           314:      */
        !           315: #if 0
        !           316:     if ( !gRegs875 )
        !           317:     {
        !           318:         gRegs875       = (u_int32_t)chipBaseAddr; 
        !           319:         gRegs875Phys   = (u_int32_t)chipBaseAddrPhys;
        !           320:         gRam875        = (u_int32_t)chipRamAddr;
        !           321:         gRam875Phys    = (u_int32_t)chipRamAddrPhys;
        !           322:     }
        !           323: #endif
        !           324: 
        !           325:     return YES;
        !           326: }
        !           327: 
        !           328: 
        !           329: /*-----------------------------------------------------------------------------*
        !           330:  * This routine allocates/initializes shared memory for communication between 
        !           331:  * the script and the driver. In addition other driver resources semaphores, 
        !           332:  * queues are initialized here.
        !           333:  *
        !           334:  *-----------------------------------------------------------------------------*/
        !           335: - (BOOL) Sym8xxInitVars
        !           336: {
        !           337:     kern_return_t              kr;
        !           338:     u_int32_t                  i;
        !           339: 
        !           340:     kr = kmem_alloc_wired(IOVmTaskSelf(), (vm_offset_t *) &adapter, page_size );
        !           341:     if ( kr != KERN_SUCCESS )
        !           342:     {
        !           343:         return NO;
        !           344:     }
        !           345:     bzero( adapter, page_size );
        !           346: 
        !           347:     /*
        !           348:      * We keep two copies of the Nexus pointer array. One contains physical addresses and
        !           349:      * is located in the script/driver shared storage. The other copy holds the corresponding
        !           350:      * virtual addresses to the active Nexus structures and is located in the drivers instance
        !           351:      * data.
        !           352:      * Both tables can be accessed through indirect pointers in the script/driver communication
        !           353:      * area. This is the preferred method to access these arrays.
        !           354:      */ 
        !           355:     adapter->nexusPtrsVirt = (Nexus **)nexusArrayVirt;
        !           356:     adapter->nexusPtrsPhys = (Nexus **)adapter->nexusArrayPhys;
        !           357: 
        !           358:     for (i=0; i < MAX_SCSI_TAG; i ++ )
        !           359:     {
        !           360:         adapter->nexusPtrsVirt[i] = (Nexus *) -1;
        !           361:         adapter->nexusPtrsPhys[i] = (Nexus *) -1;
        !           362:     }
        !           363: 
        !           364:     IOPhysicalFromVirtual((vm_task_t)IOVmTaskSelf(), (vm_offset_t)adapter, (vm_offset_t *)&adapterPhys );
        !           365:  
        !           366:     /*
        !           367:      * The script/driver communication area also contains a 16-entry table clock
        !           368:      * settings for each target.
        !           369:      */ 
        !           370:     for (i=0; i < MAX_SCSI_TARGETS; i++ )
        !           371:     {
        !           372:         targets[i].targetTagSem = [[NXLock alloc] init];
        !           373:         targets[i].flags        = kTFXferSyncAllowed | kTFXferWide16Allowed | kTFCmdQueueAllowed;
        !           374: 
        !           375:         adapter->targetClocks[i].scntl3Reg = SCNTL3_INIT_875;
        !           376:     }
        !           377: 
        !           378:     /*
        !           379:      * Allocate/init various driver semaphores
        !           380:      */
        !           381:     cmdQTagSem      = [[NXLock alloc] init];
        !           382:     abortBdrSem     = [[NXLock alloc] init];
        !           383:     resetQuiesceSem = [[NXLock alloc] init];
        !           384: 
        !           385:     
        !           386:     /*
        !           387:      *  Initialize the IOThread command queue.
        !           388:      */
        !           389:     queue_init(&srbPendingQ);
        !           390:     srbPendingQLock = [[NXLock alloc] init];
        !           391: 
        !           392:     /*
        !           393:      * Initialize the SRB Pool   
        !           394:      */
        !           395:     queue_init(&srbPool);
        !           396:     srbPoolLock = [[NXLock alloc] init];
        !           397: 
        !           398:     /*
        !           399:      * Reserve our host-adapter ID so the driverKit SCSI classes do not probe it.  
        !           400:      */
        !           401:     for ( i = 0; i < MAX_SCSI_LUNS; i++ )
        !           402:     {
        !           403:         [ self reserveTarget: kHostAdapterSCSIId lun: i forOwner: self ];
        !           404:     }
        !           405: 
        !           406:     /*
        !           407:      * Start up the SRB Pool grow thread.
        !           408:      */
        !           409:     srbPoolGrowLock = [[NXConditionLock alloc] initWith: kSRBGrowPoolIdle];
        !           410:     IOForkThread( (IOThreadFunc) Sym8xxGrowSRBPool, (void *)self );
        !           411: 
        !           412:     return YES;
        !           413: }
        !           414: 
        !           415: 
        !           416: /*-----------------------------------------------------------------------------*
        !           417:  * This routine makes a temporary copy of the script program, applies script fixups,
        !           418:  * initializes the script local data table at the top of the script image, and
        !           419:  * copies the modified script image to the script engine's on-board ram.
        !           420:  *
        !           421:  *-----------------------------------------------------------------------------*/
        !           422: - (BOOL) Sym8xxInitScript
        !           423: {
        !           424:     u_int32_t          i;
        !           425:     u_int32_t          scriptPgm[sizeof(BSC_SCRIPT)/sizeof(u_int32_t)];
        !           426: 
        !           427:     /*
        !           428:      * Make a copy of the script
        !           429:      */
        !           430:     bcopy( BSC_SCRIPT, scriptPgm, sizeof(scriptPgm) );
        !           431:     bzero( scriptPgm, R_ld_size );
        !           432: 
        !           433:     /*
        !           434:      * Apply fixups to the script copy
        !           435:      */
        !           436:     for ( i=0; i < sizeof(Rel_Patches)/sizeof(u_int32_t); i++ )
        !           437:     {
        !           438:         scriptPgm[Rel_Patches[i]] += (u_int32_t)chipRamAddrPhys;
        !           439:     }
        !           440:     for ( i=0; i < sizeof(LABELPATCHES)/sizeof(u_int32_t); i++ )
        !           441:     {
        !           442:         scriptPgm[LABELPATCHES[i]] += (u_int32_t)chipRamAddrPhys;
        !           443:     }
        !           444:  
        !           445:     /*
        !           446:      * Initialize the script working variables with pointers to the script/driver
        !           447:      * communications area.
        !           448:      */
        !           449:     scriptPgm[R_ld_sched_mlbx_base_adr >> 2]   = (u_int32_t)&adapterPhys->schedMailBox;
        !           450:     scriptPgm[R_ld_nexus_array_base >> 2]      = (u_int32_t)&adapterPhys->nexusArrayPhys;
        !           451:     scriptPgm[R_ld_device_table_base_adr >> 2]         = (u_int32_t)&adapterPhys->targetClocks;
        !           452: 
        !           453:     /*
        !           454:      * Load the script image into the script engine's on-board ram.
        !           455:      */
        !           456:     [self Sym8xxLoadScript: scriptPgm count:sizeof(scriptPgm)/sizeof(u_int32_t)];
        !           457: 
        !           458:     return YES;
        !           459: }
        !           460: 
        !           461: 
        !           462: /*-----------------------------------------------------------------------------*
        !           463:  * This routine transfers the script program image into the script engine's
        !           464:  * on-board ram
        !           465:  *
        !           466:  *-----------------------------------------------------------------------------*/
        !           467: - (void) Sym8xxLoadScript:(u_int32_t *)scriptPgm count:(u_int32_t)scriptWords
        !           468: {
        !           469:     u_int32_t                  i;
        !           470:     volatile u_int32_t         *ramPtr = (volatile u_int32_t *)chipRamAddr;
        !           471: 
        !           472:     for ( i = 0; i < scriptWords; i++ )
        !           473:     {
        !           474:         ramPtr[i] = EndianSwap32(scriptPgm[i]);
        !           475:     }
        !           476: }
        !           477: 
        !           478: /*-----------------------------------------------------------------------------*
        !           479:  * This routine initializes the script engine's register block.
        !           480:  *
        !           481:  *-----------------------------------------------------------------------------*/
        !           482: - (BOOL) Sym8xxInitChip
        !           483: {
        !           484:     u_int32_t                  i;
        !           485: 
        !           486:     /*
        !           487:      * Reset the script engine
        !           488:      */
        !           489:     Sym8xxWriteRegs( chipBaseAddr, ISTAT, ISTAT_SIZE, RST );
        !           490:     IODelay( 25 );
        !           491:     Sym8xxWriteRegs( chipBaseAddr, ISTAT, ISTAT_SIZE, ISTAT_INIT );
        !           492:   
        !           493:     /*
        !           494:      * Load our canned register values into the script engine
        !           495:      */
        !           496:     for ( i = 0; i < sizeof(Sym8xxInitRegs)/sizeof(ChipInitRegs); i++ )
        !           497:     {
        !           498:         Sym8xxWriteRegs( chipBaseAddr, Sym8xxInitRegs[i].regNum, Sym8xxInitRegs[i].regSize, Sym8xxInitRegs[i].regValue );
        !           499:         IODelay( 10 );
        !           500:     }
        !           501: 
        !           502:     /*
        !           503:      * For hardware implementations that have a 40Mhz SCLK input, we enable the chip's on-board
        !           504:      * clock doubler to bring the clock rate upto 80Mhz which is required for Ultra-SCSI timings.
        !           505:      */
        !           506:     if ( chipType == 0x875 )
        !           507:     {
        !           508:         if ( chipClockRate == CLK_40MHz )
        !           509:         {
        !           510:             /*
        !           511:              *   Clock doubler setup for 875 (rev 3 and above).
        !           512:              */
        !           513:             /* set clock doubler enabler bit */
        !           514:             Sym8xxWriteRegs( chipBaseAddr, STEST1, STEST1_SIZE, STEST1_INIT | DBLEN);
        !           515:             IODelay(30);  
        !           516:             /* halt scsi clock */
        !           517:             Sym8xxWriteRegs( chipBaseAddr, STEST3, STEST3_SIZE, STEST3_INIT | HSC );
        !           518:             IODelay(10);
        !           519:             Sym8xxWriteRegs( chipBaseAddr, SCNTL3, SCNTL3_SIZE, SCNTL3_INIT_875);
        !           520:             IODelay(10);
        !           521:             /* set clock doubler select bit */
        !           522:             Sym8xxWriteRegs( chipBaseAddr, STEST1, STEST1_SIZE, STEST1_INIT | DBLEN | DBLSEL);
        !           523:             IODelay(10);
        !           524:             /* clear hold on scsi clock */
        !           525:             Sym8xxWriteRegs( chipBaseAddr, STEST3, STEST3_SIZE, STEST3_INIT);
        !           526:         }
        !           527:     }
        !           528:     else
        !           529:     {
        !           530:         Sym8xxWriteRegs( chipBaseAddr, SCNTL3, SCNTL3_SIZE, SCNTL3_INIT);
        !           531:     }
        !           532: 
        !           533:     /*  
        !           534:      * Set our host-adapter ID in the script engine's registers
        !           535:      */
        !           536:     initiatorID = kHostAdapterSCSIId;
        !           537: 
        !           538:     if ( initiatorID > 7 )
        !           539:     {
        !           540:         Sym8xxWriteRegs( chipBaseAddr, RESPID1, RESPID1_SIZE, 1 << (initiatorID-8));
        !           541:     }
        !           542:     else
        !           543:     {
        !           544:         Sym8xxWriteRegs( chipBaseAddr, RESPID0, RESPID0_SIZE, 1 << initiatorID);
        !           545:     }
        !           546: 
        !           547:     Sym8xxWriteRegs( chipBaseAddr, SCID, SCID_SIZE, SCID_INIT | initiatorID );
        !           548: 
        !           549:     return YES;
        !           550: }
        !           551: 
        !           552: 
        !           553: @end

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