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Annotation of driverkit/libDriver/eisa/IOEISADeviceDescription.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) 1993 NeXT Computer, Inc.
        !            26:  *
        !            27:  * ISA/EISA device description class.
        !            28:  *
        !            29:  * HISTORY
        !            30:  *
        !            31:  * 18Jan93 Brian Pinkerton at NeXT
        !            32:  *     Created.
        !            33:  */
        !            34:  
        !            35: #define KERNEL_PRIVATE 1
        !            36: 
        !            37: #import <objc/List.h>
        !            38: 
        !            39: #import <driverkit/KernDeviceDescription.h>
        !            40: #import <driverkit/i386/EISAKernBus.h>
        !            41: 
        !            42: #import <driverkit/i386/IOEISADeviceDescription.h>
        !            43: #import <driverkit/i386/IOEISADeviceDescriptionPrivate.h>
        !            44: #import <driverkit/IODeviceDescriptionPrivate.h>
        !            45: #import <driverkit/IOProperties.h>
        !            46: 
        !            47: struct _private {
        !            48:     unsigned int       *channels;
        !            49:     unsigned int       numChannels;
        !            50:     IORange            *portRanges;
        !            51:     unsigned int       numPortRanges;
        !            52:     BOOL               valid;
        !            53:     unsigned int       slotNum;
        !            54:     unsigned long      slotID;
        !            55: };
        !            56: 
        !            57: @implementation IOEISADeviceDescription
        !            58: 
        !            59: - free
        !            60: {
        !            61:     struct _private    *private = _eisa_private;
        !            62:     
        !            63:     if (private->numChannels > 0)
        !            64:        IOFree(private->channels,
        !            65:                private->numChannels * sizeof (*private->channels));
        !            66:     if (private->numPortRanges > 0)
        !            67:        IOFree(private->portRanges,
        !            68:                private->numPortRanges * sizeof (*private->portRanges));
        !            69:                        
        !            70:     IOFree(private, sizeof (*private));
        !            71:     
        !            72:     return [super free];
        !            73: }
        !            74: 
        !            75: - (unsigned int) channel
        !            76: {
        !            77:     return [self channelList][0];
        !            78: }
        !            79: 
        !            80: 
        !            81: - (unsigned int *) channelList
        !            82: {
        !            83:     struct _private    *private = _eisa_private;
        !            84: 
        !            85:     if (private->numChannels == 0)
        !            86:        private->channels = [self
        !            87:                                _fetchItemList:[[self _delegate] 
        !            88:                                        resourcesForKey:DMA_CHANNELS_KEY]
        !            89:                                    returnedNum:&private->numChannels];
        !            90:     return private->channels;
        !            91: }
        !            92: 
        !            93: - (unsigned int) numChannels
        !            94: {
        !            95:     struct _private    *private = _eisa_private;
        !            96: 
        !            97:     if (private->numChannels == 0)
        !            98:        private->channels = [self
        !            99:                                _fetchItemList:[[self _delegate] 
        !           100:                                        resourcesForKey:DMA_CHANNELS_KEY]
        !           101:                                    returnedNum:&private->numChannels];
        !           102:     return private->numChannels;
        !           103: }
        !           104: 
        !           105: - (IORange *) portRangeList
        !           106: {
        !           107:     struct _private    *private = _eisa_private;
        !           108: 
        !           109:     if (private->numPortRanges == 0)
        !           110:        private->portRanges = [self
        !           111:                                _fetchRangeList:[[self _delegate] 
        !           112:                                        resourcesForKey:IO_PORTS_KEY]
        !           113:                                    returnedNum:&private->numPortRanges];
        !           114:     return private->portRanges;
        !           115: }
        !           116: 
        !           117: - (unsigned int) numPortRanges
        !           118: {
        !           119:     struct _private    *private = _eisa_private;
        !           120: 
        !           121:     if (private->numPortRanges == 0)
        !           122:        private->portRanges = [self
        !           123:                                _fetchRangeList:[[self _delegate] 
        !           124:                                        resourcesForKey:IO_PORTS_KEY]
        !           125:                                    returnedNum:&private->numPortRanges];
        !           126:     return private->numPortRanges;
        !           127: }
        !           128: 
        !           129: 
        !           130: - (IOReturn) setChannelList:(unsigned int *)aList num:(unsigned int) length
        !           131: {
        !           132:     IOReturn ret = IO_R_RESOURCE;
        !           133:     
        !           134:     if ([[self _delegate]
        !           135:        allocateItems:aList numItems:length
        !           136:        forKey:DMA_CHANNELS_KEY] != nil) {
        !           137:        
        !           138:        struct _private *private = (struct _private *)_eisa_private;
        !           139:        if (private->numChannels > 0)
        !           140:            IOFree(private->channels,
        !           141:                private->numChannels * sizeof (*private->channels));
        !           142:        private->numChannels = 0;
        !           143:        ret = IO_R_SUCCESS;
        !           144:     }
        !           145:     return ret;
        !           146: }
        !           147: 
        !           148: - (IOReturn) setPortRangeList:(IORange *)aList num:(unsigned int) length
        !           149: {
        !           150:     IOReturn ret = IO_R_RESOURCE;
        !           151:     Range *ranges;
        !           152:     int i;
        !           153:     
        !           154:     ranges = (Range *)IOMalloc(sizeof(Range) * length);
        !           155:     for (i=0; i<length; i++) {
        !           156:        ranges[i].base = aList[i].start;
        !           157:        ranges[i].length = aList[i].size;
        !           158:     }
        !           159:     if ([[self _delegate]
        !           160:        allocateRanges:ranges numRanges:length forKey:IO_PORTS_KEY] != nil) {
        !           161:        
        !           162:        struct _private *private = (struct _private *)_eisa_private;
        !           163:        if (private->numPortRanges > 0)
        !           164:            IOFree(private->portRanges,
        !           165:                private->numPortRanges * sizeof (*private->portRanges));
        !           166:        private->numPortRanges = 0;
        !           167:        ret = IO_R_SUCCESS;
        !           168:     }
        !           169:     IOFree(ranges, sizeof(Range) * length);
        !           170:     return ret;
        !           171: }
        !           172: 
        !           173: - (IOReturn) getEISASlotNumber : (unsigned int *) slotNum
        !           174: {
        !           175:     struct _private    *private = _eisa_private;
        !           176: 
        !           177:     if (private->valid) {
        !           178:        if (slotNum) *slotNum = private->slotNum;
        !           179:        return IO_R_SUCCESS;
        !           180:     }
        !           181:     return IO_R_NO_DEVICE;
        !           182: }
        !           183: 
        !           184: 
        !           185: - (IOReturn) getEISASlotID : (unsigned long *) slotID
        !           186: {
        !           187:     struct _private    *private = _eisa_private;
        !           188: 
        !           189:     if (private->valid) {
        !           190:        if (slotID) *slotID = private->slotID;
        !           191:        return IO_R_SUCCESS;
        !           192:     }
        !           193:     return IO_R_NO_DEVICE;
        !           194: }
        !           195: 
        !           196: @end
        !           197: 
        !           198: @implementation IOEISADeviceDescription(Private)
        !           199: 
        !           200: - _initWithDelegate:delegate
        !           201: {
        !           202:     struct _private    *private;
        !           203:     id                  theEISABus = [KernBus lookupBusInstanceWithName:"EISA" busId:0];
        !           204: 
        !           205:     [super _initWithDelegate:delegate];
        !           206:     _eisa_private = (void *)IOMalloc(sizeof (struct _private));
        !           207:     bzero(_eisa_private, sizeof (struct _private));
        !           208:     private = _eisa_private;
        !           209: 
        !           210:     private->valid = ( (theEISABus != nil) &&
        !           211:        ([theEISABus getEISASlotNumber: &(private->slotNum)
        !           212:                                slotID: &(private->slotID)
        !           213:                usingDeviceDescription: delegate] == IO_R_SUCCESS) );
        !           214: 
        !           215:     return self;
        !           216: }
        !           217: 
        !           218: - property_IODeviceType:(char *)types length:(unsigned int *)maxLen
        !           219: {
        !           220:     strcpy( types, IOTypePCComp);
        !           221:     return( self);
        !           222: }
        !           223: 
        !           224: @end

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