46 lines
1.3 KiB
C
46 lines
1.3 KiB
C
/* Copyright 2017 IBM Corp.
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or
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* implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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#ifndef __PSR_H
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#define __PSR_H
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#include <opal.h>
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enum psr_class {
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PSR_CLASS_OCC,
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};
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/*
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* PSR handle is defined as u32. The first and last bytes are
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* used to indicate the class and type. RID indiactes psr class
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* specific data. For PSR_CLASS_OCC psr class RID is the chip index.
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*
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* | Class |Reserved| RID | Type |
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* |-------|--------|------|------|
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*/
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#define psr_make_handle(class, rid, type) (((class & 0xF) << 24) | \
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((rid & 0xF) << 8) | (type & 0xF))
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#define psr_get_class(handle) ((handle >> 24) & 0xF)
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#define psr_get_rid(handle) ((handle >> 8) & 0xF)
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#define psr_get_type(handle) (handle & 0xF)
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/* Powercap OCC interface */
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int occ_get_psr(u32 handle, u32 *ratio);
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int occ_set_psr(u32 handle, int token, u32 ratio);
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#endif /* __PSR_H */
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