1 | /* |
2 | * Copyright (c) 2012-2013 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 | #include <IOKit/IOKernelReportStructs.h> |
30 | #include <IOKit/IOKernelReporters.h> |
31 | #include "IOReporterDefs.h" |
32 | |
33 | #define super IOReporter |
34 | OSDefineMetaClassAndStructors(IOSimpleReporter, IOReporter); |
35 | |
36 | /* static */ |
37 | IOSimpleReporter* |
38 | IOSimpleReporter::with(IOService *reportingService, |
39 | IOReportCategories categories, |
40 | IOReportUnit unit) |
41 | { |
42 | IOSimpleReporter *reporter, *rval = NULL; |
43 | |
44 | // kprintf("%s\n", __func__); // can't IORLOG() from static |
45 | |
46 | reporter = new IOSimpleReporter; |
47 | if (!reporter) goto finish; |
48 | |
49 | |
50 | if (!reporter->initWith(reportingService, categories, unit)) { |
51 | goto finish; |
52 | } |
53 | |
54 | // success |
55 | rval = reporter; |
56 | |
57 | finish: |
58 | if (!rval) { |
59 | OSSafeReleaseNULL(reporter); |
60 | } |
61 | |
62 | return rval; |
63 | } |
64 | |
65 | bool |
66 | IOSimpleReporter::initWith(IOService *reportingService, |
67 | IOReportCategories categories, |
68 | IOReportUnit unit) |
69 | { |
70 | // fully specify the channel type for the superclass |
71 | IOReportChannelType channelType = { |
72 | .categories = categories, |
73 | .report_format = kIOReportFormatSimple, |
74 | .nelements = 1, |
75 | .element_idx = 0 |
76 | }; |
77 | |
78 | return super::init(reportingService, channelType, unit); |
79 | } |
80 | |
81 | |
82 | IOReturn |
83 | IOSimpleReporter::setValue(uint64_t channel_id, |
84 | int64_t value) |
85 | { |
86 | IOReturn res = kIOReturnError; |
87 | IOSimpleReportValues simple_values; |
88 | int element_index = 0; |
89 | |
90 | lockReporter(); |
91 | |
92 | if (getFirstElementIndex(channel_id, &element_index) != kIOReturnSuccess) { |
93 | res = kIOReturnBadArgument; |
94 | goto finish; |
95 | } |
96 | |
97 | |
98 | if (copyElementValues(element_index, (IOReportElementValues *)&simple_values) != kIOReturnSuccess) { |
99 | res = kIOReturnBadArgument; |
100 | goto finish; |
101 | } |
102 | |
103 | simple_values.simple_value = value; |
104 | res = setElementValues(element_index, (IOReportElementValues *)&simple_values); |
105 | |
106 | finish: |
107 | unlockReporter(); |
108 | return res; |
109 | } |
110 | |
111 | |
112 | IOReturn |
113 | IOSimpleReporter::incrementValue(uint64_t channel_id, |
114 | int64_t increment) |
115 | { |
116 | IOReturn res = kIOReturnError; |
117 | IOSimpleReportValues simple_values; |
118 | int element_index = 0; |
119 | |
120 | lockReporter(); |
121 | |
122 | if (getFirstElementIndex(channel_id, &element_index) != kIOReturnSuccess) { |
123 | res = kIOReturnBadArgument; |
124 | goto finish; |
125 | } |
126 | |
127 | if (copyElementValues(element_index, (IOReportElementValues *)&simple_values) != kIOReturnSuccess){ |
128 | res = kIOReturnBadArgument; |
129 | goto finish; |
130 | } |
131 | |
132 | simple_values.simple_value += increment; |
133 | |
134 | res = setElementValues(element_index, (IOReportElementValues *)&simple_values); |
135 | |
136 | finish: |
137 | unlockReporter(); |
138 | return res; |
139 | } |
140 | |
141 | int64_t |
142 | IOSimpleReporter::getValue(uint64_t channel_id) |
143 | { |
144 | IOSimpleReportValues *values = NULL; |
145 | int64_t simple_value = (int64_t)kIOReportInvalidValue; |
146 | int index = 0; |
147 | |
148 | lockReporter(); |
149 | |
150 | if (getFirstElementIndex(channel_id, &index) == kIOReturnSuccess) { |
151 | |
152 | values = (IOSimpleReportValues *)getElementValues(index); |
153 | |
154 | if (values != NULL) |
155 | simple_value = values->simple_value; |
156 | } |
157 | |
158 | unlockReporter(); |
159 | return simple_value; |
160 | } |
161 | |
162 | |