1 /*
2 * Copyright (c) 2019 Apple Computer, Inc. All rights reserved.
3 *
4 * @APPLE_OSREFERENCE_LICENSE_HEADER_START@
5 *
6 * This file contains Original Code and/or Modifications of Original Code
7 * as defined in and that are subject to the Apple Public Source License
8 * Version 2.0 (the 'License'). You may not use this file except in
9 * compliance with the License. The rights granted to you under the License
10 * may not be used to create, or enable the creation or redistribution of,
11 * unlawful or unlicensed copies of an Apple operating system, or to
12 * circumvent, violate, or enable the circumvention or violation of, any
13 * terms of an Apple operating system software license agreement.
14 *
15 * Please obtain a copy of the License at
16 * http://www.opensource.apple.com/apsl/ and read it before using this file.
17 *
18 * The Original Code and all software distributed under the License are
19 * distributed on an 'AS IS' basis, WITHOUT WARRANTY OF ANY KIND, EITHER
20 * EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES,
21 * INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY,
22 * FITNESS FOR A PARTICULAR PURPOSE, QUIET ENJOYMENT OR NON-INFRINGEMENT.
23 * Please see the License for the specific language governing rights and
24 * limitations under the License.
25 *
26 * @APPLE_OSREFERENCE_LICENSE_HEADER_END@
27 */
28
29 extern "C" {
30 #include <pexpert/pexpert.h>
31 }
32
33 #include <IOKit/platform/IOPlatformIO.h>
34
35 #define super IOService
36 OSDefineMetaClassAndAbstractStructors(IOPlatformIO, IOService);
37
38 static IOPlatformIO * platformIOProvider;
39
40 bool
start(IOService * provider)41 IOPlatformIO::start(IOService * provider)
42 {
43 if (!super::start(provider)) {
44 return false;
45 }
46
47 if (platformIOProvider == NULL) {
48 platformIOProvider = this;
49 }
50
51 return true;
52 }
53
54 bool
PE_handle_platform_error(vm_offset_t far)55 PE_handle_platform_error(vm_offset_t far)
56 {
57 if (platformIOProvider == NULL) {
58 return false;
59 } else {
60 return platformIOProvider->handlePlatformError(far);
61 }
62 }
63