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Annotation of kernel/bsd/dev/ppc/PowerSurgeMB.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: /*     Copyright (c) 1997 Apple Computer, Inc.  All rights reserved. 
        !            26:  *
        !            27:  * PowerSurgeMB.c
        !            28:  *
        !            29:  * 20-May-97   Simon Douglas
        !            30:  *      Created.
        !            31:  */
        !            32: 
        !            33: #include <mach/mach_types.h>
        !            34: #include <machdep/ppc/proc_reg.h>
        !            35: #include <machdep/ppc/powermac.h>
        !            36: #import <driverkit/IODevice.h>
        !            37: #include "busses.h"
        !            38: #import <bsd/dev/ppc/drvPMU/pmu.h>
        !            39: #import <bsd/dev/ppc/drvPMU/pmupriv.h>
        !            40: #import <bsd/dev/ppc/drvPMU/pmumisc.h>
        !            41: 
        !            42: 
        !            43: // seconds between 1904 (Mac) & 1970 (UNIX) - many.
        !            44: #define JAN11970       0x7c25b080
        !            45: // MacOS xpram var for local secs from GMT
        !            46: #define MACTIMEZONE    0xec
        !            47: 
        !            48: #define printf kprintf
        !            49: 
        !            50: void MBCallback(id unused, UInt32 refnum, UInt32 length, UInt8* buffer);
        !            51: void wait_for_callback(void);
        !            52: 
        !            53: thread_t  our_thread;
        !            54: id ApplePMUId;         // loaded driver
        !            55: 
        !            56: 
        !            57: IOReturn
        !            58: cuda_time_of_day( unsigned int * secs, int set )
        !            59: {
        !            60:     unsigned int  newTime;
        !            61: 
        !            62: kprintf("cuda_time_of_day: ApplePMUId = %08x, secs = %08x, *secs = %08x, set = %08x\n",
        !            63:        ApplePMUId, secs, *secs, set);
        !            64: 
        !            65:     if ( set == 0 ) {
        !            66:       if ( ApplePMUId == NULL ) {
        !            67:                *secs = JAN11970;
        !            68:       } else {
        !            69:                [ApplePMUId getRealTimeClock:(UInt8 *)&newTime :0 :0 :MBCallback];
        !            70:                wait_for_callback();
        !            71:        
        !            72:                *secs = newTime;
        !            73: kprintf("newTime =%x\n", newTime);
        !            74:       }
        !            75:     } else {
        !            76:       if ( ApplePMUId != NULL ) {
        !            77:                newTime = *secs;
        !            78: 
        !            79:                [ApplePMUId setRealTimeClock:(UInt8 *)&newTime :0 :0 :MBCallback];
        !            80:                wait_for_callback();
        !            81:       }
        !            82:     }
        !            83:     
        !            84:     return 0;
        !            85: }
        !            86: 
        !            87: 
        !            88: void
        !            89: cuda_restart(int powerOff)
        !            90: {
        !            91:     unsigned char commandBuffer[4] = {'M', 'A', 'T', 'T'};
        !            92:     unsigned char inputBuffer[1];
        !            93:     
        !            94:     kprintf("cuda_restart\n");
        !            95:     
        !            96:     if ( ApplePMUId == NULL ) {
        !            97:       kprintf("cuda_restart, no PMU driver\n");
        !            98:     } else {
        !            99:       if( powerOff ) {
        !           100:        [ApplePMUId sendMiscCommand:kPMUPmgrPWRoff :4 :commandBuffer :inputBuffer :0 :0 :MBCallback];
        !           101:       } else {
        !           102:        [ApplePMUId sendMiscCommand:kPMUresetCPU :0 :NULL :NULL :0 :0 :MBCallback];
        !           103:       }
        !           104:       wait_for_callback();
        !           105:     }
        !           106: }
        !           107: 
        !           108: void PowerSurgeSendIIC( unsigned char iicAddr, unsigned char iicReg, unsigned char iicData)
        !           109: {
        !           110: #if 0 //No adb_send() in adb.c any more
        !           111:     adb_request_t   cmd;
        !           112: 
        !           113:     adb_init_request(&cmd);
        !           114:     cmd.a_cmd.a_header[0] = ADB_PACKET_PSEUDO;
        !           115:     cmd.a_cmd.a_header[1] = ADB_PSEUDOCMD_GET_SET_IIC;
        !           116:     cmd.a_cmd.a_header[2] = iicAddr;
        !           117:     cmd.a_cmd.a_header[3] = iicReg;
        !           118:     cmd.a_cmd.a_header[4] = iicData;
        !           119:     cmd.a_cmd.a_hcount = 5;
        !           120:     adb_send(&cmd, TRUE);
        !           121: #endif
        !           122:     UInt8       buffer[5] = {   1,
        !           123:                     0x22,      //ADB_PSEUDOCMD_GET_SET_IIC in adb.h 
        !           124:                     iicAddr, 
        !           125:                     iicReg,
        !           126:                     iicData};
        !           127: 
        !           128:     if ( ApplePMUId != NULL ) {       //A.W. combined from Titan C
        !           129:         // old, Simon says is buggy [ApplePMUId CudaMisc:buffer:5:NULL:0:NULL];
        !           130:         [ApplePMUId CudaMisc:buffer:5:(UInt32)current_thread() : 0: MBCallback];
        !           131: 
        !           132:                wait_for_callback();
        !           133:        }
        !           134: 
        !           135: }
        !           136: 
        !           137: // Can't be used anymore...
        !           138: #if 0
        !           139: enum {
        !           140:     kXPRAMNVPartition          = 0x1300,
        !           141:     kNameRegistryNVPartition   = 0x1400,
        !           142:     kOpenFirmwareNVPartition   = 0x1800,
        !           143: };
        !           144: #endif
        !           145: 
        !           146: IOReturn
        !           147: ReadNVRAM( unsigned int offset, unsigned int length, unsigned char * buffer )
        !           148: {
        !           149:   volatile unsigned char *nvAddrReg =
        !           150:     (volatile unsigned char *) (POWERMAC_IO(PCI_NVRAM_ADDR_PHYS));
        !           151:   volatile unsigned char *nvDataReg =
        !           152:     (volatile unsigned char *) (POWERMAC_IO(PCI_NVRAM_DATA_PHYS));
        !           153: int    i;
        !           154: 
        !           155:     if( offset + length > 0x2000 )
        !           156:        return( IO_R_UNSUPPORTED);
        !           157: 
        !           158:     if (HasPMU()) {
        !           159:       // This is a powerbook
        !           160:       if (ApplePMUId == NULL) {
        !           161:        for ( i = 0; i < length; i++ ) {
        !           162:          buffer[i] = 0;
        !           163:        }
        !           164:       } else {
        !           165:        [ApplePMUId readNVRAM: offset: length: buffer: 0: 0: MBCallback];
        !           166:        wait_for_callback();
        !           167:       }
        !           168:     } else {
        !           169:       // This is a desktop mac
        !           170:       if (IsPowerSurge()) {
        !           171:         for( i = 0; i < length; i++) {
        !           172:          *nvAddrReg = (0xff & ((offset + i) >> 5));
        !           173:          eieio();
        !           174:          buffer[i] = *(nvDataReg + 16 * ((offset + i) & 0x1f));
        !           175:          eieio();
        !           176:         }
        !           177:       } else {
        !           178:         for (i = 0; i < length; i++) {
        !           179:          buffer[i] = nvAddrReg[(offset + i) * 16];
        !           180:         }
        !           181:       }
        !           182:     }
        !           183: 
        !           184:     return 0;
        !           185: }
        !           186: 
        !           187: IOReturn
        !           188: WriteNVRAM( unsigned int offset, unsigned int length, unsigned char * buffer )
        !           189: {
        !           190:   volatile unsigned char *nvAddrReg =
        !           191:     (volatile unsigned char *) (POWERMAC_IO(PCI_NVRAM_ADDR_PHYS));
        !           192:   volatile unsigned char *nvDataReg =
        !           193:     (volatile unsigned char *) (POWERMAC_IO(PCI_NVRAM_DATA_PHYS));
        !           194: int    i;
        !           195: 
        !           196:     if( offset + length > 0x2000 )
        !           197:        return( IO_R_UNSUPPORTED);
        !           198: 
        !           199:     if (HasPMU()) { 
        !           200:       // This is a powerbook
        !           201:       if (ApplePMUId == NULL) {
        !           202:       } else {
        !           203:        [ApplePMUId writeNVRAM: offset: length: buffer: 0: 0: MBCallback];
        !           204:        wait_for_callback();
        !           205:       }
        !           206:     } else {
        !           207:       // This is a desktop mac
        !           208:       if (IsPowerSurge()) {
        !           209:         for( i = 0; i < length; i++) {
        !           210:          *nvAddrReg = (0xff & ((offset + i) >> 5));
        !           211:          eieio();
        !           212:          *(nvDataReg + 16 * ((offset + i) & 0x1f)) = buffer[i];
        !           213:          eieio();
        !           214:         }
        !           215:       } else {
        !           216:         for( i = 0; i < length; i++) {
        !           217:          nvAddrReg[(offset + i) * 16] = buffer[i];
        !           218:         }
        !           219:       }
        !           220:     }
        !           221: 
        !           222:     return 0;
        !           223: }
        !           224: 
        !           225: 
        !           226: int
        !           227: GetMacOSTimeZone( void )
        !           228: {
        !           229:     int                        macZone;
        !           230:     IOReturn           err;
        !           231: 
        !           232:     err = ReadNVRAM( NVRAM_XPRAM_Offset + MACTIMEZONE, 4,
        !           233:                     (unsigned char *)&macZone);
        !           234: 
        !           235:     printf( " macZone: %x",macZone );
        !           236: 
        !           237:     if( err == 0) {
        !           238:        if( macZone & 0x00800000)
        !           239:            macZone |= 0xff000000;      // sign ext 24->32
        !           240:        else
        !           241:            macZone &= 0x00ffffff;      // sign ext 24->32
        !           242:     } else
        !           243:        macZone = 0;
        !           244:     return macZone;
        !           245: }
        !           246: 
        !           247: unsigned int
        !           248: get_unix_time_of_day( void )
        !           249: {
        !           250:     int                        secs, macZone;
        !           251:     int                        err;
        !           252: 
        !           253:     err = cuda_time_of_day( &secs, FALSE );
        !           254: /*     printf( "TOD secs: %x,",secs ); */
        !           255:     secs -= (JAN11970 + GetMacOSTimeZone());
        !           256: /*     printf( " = Mac OS X Server: %x\n",secs ); */
        !           257:     return( secs );
        !           258: }
        !           259: 
        !           260: void
        !           261: set_unix_time_of_day( unsigned int unixSecs )
        !           262: {
        !           263:     int                        secs, macZone;
        !           264:     int                        err;
        !           265: 
        !           266: /*     printf( "Mac OS X Server: %x,", unixSecs ); */
        !           267:     secs = unixSecs + JAN11970 + GetMacOSTimeZone();
        !           268: /*     printf( " = TOD secs: %x\n",secs ); */
        !           269:    err = cuda_time_of_day( &secs, TRUE );
        !           270:    return;
        !           271: }
        !           272: 
        !           273: void MBCallback(id unused, UInt32 refnum, UInt32 length, UInt8* buffer)
        !           274: {
        !           275:     clear_wait(our_thread,0,FALSE);
        !           276: }
        !           277: 
        !           278: 
        !           279: // We have sent a command to the PMU driver.  Sleep until it has sent the
        !           280: // command to the PMU.
        !           281: void wait_for_callback(void)
        !           282: {
        !           283:     our_thread = current_thread();
        !           284:     assert_wait(our_thread, FALSE);
        !           285:     thread_block();
        !           286: }

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