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Annotation of kernel/bsd/dev/ppc/drvOHare/ohare.m, revision 1.1.1.1

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: 
                     27: #include <machdep/ppc/proc_reg.h>
                     28: #include <machdep/ppc/powermac.h>
                     29: 
                     30: #import "ohare.h"
                     31: 
                     32: 
                     33: @implementation AppleOHare
                     34: 
                     35: + (BOOL)probe:(IOPCIDevice *)deviceDescription
                     36: {
                     37:   AppleOHare  *OHareInstance;
                     38: 
                     39:   OHareInstance = [self alloc];
                     40:   
                     41:   return [OHareInstance initFromDeviceDescription:deviceDescription] != nil;
                     42: }
                     43: 
                     44: 
                     45: - initFromDeviceDescription:(IOPCIDevice *)deviceDescription
                     46: {
                     47:   unsigned long PCICommandReg;
                     48: 
                     49:   if ([super initFromDeviceDescription:deviceDescription] == nil) {
                     50:     IOLog("AppleOHare: [super initFromDeviceDescription] failed\n");
                     51:     return nil;
                     52:   }
                     53:   
                     54:   // Set the PCI Command Register for Bus Master, Memory Access
                     55:   // and not I/O Access.
                     56:   [deviceDescription configReadLong:0x04 value:&PCICommandReg];
                     57:   PCICommandReg |= (2 | 1);  // Master & Memory
                     58:   PCICommandReg &= ~4;       // Not I/O
                     59:   [deviceDescription configWriteLong:0x04 value:PCICommandReg];
                     60: 
                     61:   [self mapMemoryRange:0 to:(vm_address_t *)&ioBaseOHare
                     62:        findSpace:YES cache:IO_CacheOff];
                     63: 
                     64:   powermac_io_info.io_base2 = ioBaseOHare;
                     65: 
                     66:   *(long *)(ioBaseOHare + 0x00024) = 0;    /* Disable all interrupts */
                     67:   eieio();
                     68:   *(long *)(ioBaseOHare + 0x00028) = 0xffffffff; /* Clear pending interrupts */
                     69:   eieio();
                     70:   *(long *)(ioBaseOHare + 0x00024)  = 0;    /* Disable all interrupts */
                     71:   eieio();
                     72:   
                     73:   [deviceDescription setInterruptList:NULL num:0];
                     74: 
                     75:   [self setName:"AppleOHare"];
                     76:   [self registerDevice];
                     77: 
                     78:   return self;
                     79: }
                     80: 
                     81: @end

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