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Annotation of kernel/bsd/dev/ppc/drvATADisk/ATADiskInternal.h, 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: /*
        !            26:  * Copyright 1997-1998 by Apple Computer, Inc., All rights reserved.
        !            27:  * Copyright 1994-1997 NeXT Software, Inc., All rights reserved.
        !            28:  *
        !            29:  * ATADiskInt.h - private categories and typedefs for ATADisk class.
        !            30:  *
        !            31:  * HISTORY 
        !            32:  * 07-Jul-1994  Rakesh Dubey at NeXT
        !            33:  *     Created from original driver written by David Somayajulu.
        !            34:  */
        !            35:  
        !            36: #ifdef DRIVER_PRIVATE
        !            37: 
        !            38: #ifndef        _BSD_DEV_ATADISKINTERNAL_H
        !            39: #define _BSD_DEV_ATADISKINTERNAL_H
        !            40: 
        !            41: #import <driverkit/return.h>
        !            42: #import <driverkit/driverTypes.h>
        !            43: #import "ATADisk.h"
        !            44: #import "IdeCntPublic.h"
        !            45: 
        !            46: /*
        !            47:  * Condition variable states for ioQueueLock.
        !            48:  */
        !            49: #define NO_WORK_AVAILABLE      0
        !            50: #define WORK_AVAILABLE         1
        !            51: 
        !            52: /*
        !            53:  * Kernel-specific types.
        !            54:  */
        !            55: #define NUM_IDE_DEV            (MAX_IDE_DRIVES * MAX_IDE_CONTROLLERS)  // 4
        !            56: 
        !            57: #define NUM_IDE_PART           8
        !            58: #define IDE_LIVE_PART          (NUM_IDE_PART-1)
        !            59: 
        !            60: 
        !            61: typedef struct {
        !            62:     /*
        !            63:      * One per unit. Note that the physDevice (live partition), the raw
        !            64:      * device, and the block devices for a given disk all share the same
        !            65:      * physbuf. Block devices don't use physbuf; arbitration for access to
        !            66:      * physbuf by the raw and live devices is done by physio(). 
        !            67:      */
        !            68:     struct buf *physbuf;   /* for phys I/O */
        !            69: 
        !            70: }       Ide_dev_t;
        !            71: 
        !            72: __private_extern__ void ide_init_idmap(id);
        !            73: __private_extern__ IODevAndIdInfo *ide_idmap();
        !            74: 
        !            75: /*
        !            76:  * General utility methods in ATADiskInternal.m.
        !            77:  */
        !            78: @interface ATADisk(Internal)
        !            79: 
        !            80: /*
        !            81:  * Print details about the drive. 
        !            82:  */
        !            83: -(void)printInfo:(ideIdentifyInfo_t *)ideIdentifyInfo unit:(unsigned int)unit;
        !            84: 
        !            85: /*
        !            86:  * Probe for existing drive.
        !            87:  */
        !            88: - (BOOL)ideDiskInit:(unsigned int)diskUnit target:(unsigned int)unit;
        !            89: 
        !            90: - (IOReturn)initIdeDrive;
        !            91: 
        !            92: /*
        !            93:  * One-time only initialization.
        !            94:  */
        !            95: - initResources:controller;
        !            96: 
        !            97: /*
        !            98:  * Free up local resources. 
        !            99:  */
        !           100: - free;
        !           101: 
        !           102: 
        !           103: /*
        !           104:  * Alloc/free command buffers.
        !           105:  */
        !           106: - (ideBuf_t *)allocIdeBuf:(void *)pending;
        !           107: - (void)freeIdeBuf:(ideBuf_t *)ideBuf;
        !           108: 
        !           109: /*
        !           110:  * Common read/write routine.
        !           111:  */
        !           112: - (IOReturn) deviceRwCommon : (IdeCmd_t)command
        !           113:                  block: (u_int) deviceBlock
        !           114:                  length : (u_int)length
        !           115:                  buffer : (void *)buffer
        !           116:                  client : (vm_task_t)client
        !           117:                  pending : (void *)pending
        !           118:                  actualLength : (u_int *)actualLength;
        !           119: 
        !           120: /*
        !           121:  * -- Enqueue an ideBuf_t on ioQueue<Disk,Nodisk>
        !           122:  * -- wake up the I/O thread
        !           123:  * -- wait for I/O complete (if ideBuf->pending == NULL)
        !           124:  */
        !           125: - (IOReturn)enqueueIdeBuf      : (ideBuf_t *)ideBuf;
        !           126: 
        !           127: /*
        !           128:  * Either wake up the thread which is waiting on the ideCmdBuf, or send an 
        !           129:  * ioComplete back to client. ideCmdBuf->status must be valid.
        !           130:  */
        !           131: - (void)ideIoComplete          : (ideBuf_t *)ideBuf;
        !           132: 
        !           133: /*
        !           134:  * Main command dispatch method.
        !           135:  */
        !           136: - (void)ideCmdDispatch                 : (ideBuf_t *)ideBuf;
        !           137: 
        !           138: - (IOReturn) ideXfrIoReq:(ideIoReq_t *)ideIoReq;
        !           139: /*
        !           140:  * Common read/write method.
        !           141:  */
        !           142: - (IOReturn)ideRwCommon        : (ideBuf_t *)ideBuf;
        !           143: 
        !           144: - (void)logRwErr               : (const char *)errType 
        !           145:                          block : (int)block
        !           146:                         status : (ide_return_t)status
        !           147:                       readFlag : (BOOL)readFlag;
        !           148: 
        !           149: /*
        !           150:  * Unlock ioQLock, updating condition variable as appropriate.
        !           151:  */
        !           152: - (void)unlockIoQLock;
        !           153: 
        !           154: /*
        !           155:  * Top-level I/O thread.
        !           156:  */
        !           157: volatile void ideThread(ATADisk *idisk);
        !           158: 
        !           159: @end   /* ATADisk(Internal) */
        !           160: 
        !           161: #endif /* _BSD_DEV_ATADISKINTERNAL_H */
        !           162: 
        !           163: #endif /* DRIVER_PRIVATE */
        !           164: 

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