diff options
| author | Shilpasri G Bhat <shilpa.bhat@linux.vnet.ibm.com> | 2017-07-28 00:45:28 +0530 |
|---|---|---|
| committer | Stewart Smith <stewart@linux.vnet.ibm.com> | 2017-07-28 14:53:19 +1000 |
| commit | c6aabe3f2eb51cf1df7da83432b15a37200f1adb (patch) | |
| tree | df469b4de5658202103356bdec9dbdeddf8e2084 /include | |
| parent | d253cc64fedbfd92d082f3ec48646c36455fb00f (diff) | |
| download | skiboot-c6aabe3f2eb51cf1df7da83432b15a37200f1adb.zip skiboot-c6aabe3f2eb51cf1df7da83432b15a37200f1adb.tar.gz skiboot-c6aabe3f2eb51cf1df7da83432b15a37200f1adb.tar.bz2 | |
powercap: occ: Add a generic powercap framework
This patch adds a generic powercap framework and exports OCC powercap
sensors using which system powercap can be set inband through OPAL-OCC
command-response interface.
Documentation for powercap enhanced by Stewart Smith.
Signed-off-by: Shilpasri G Bhat <shilpa.bhat@linux.vnet.ibm.com>
Signed-off-by: Stewart Smith <stewart@linux.vnet.ibm.com>
Diffstat (limited to 'include')
| -rw-r--r-- | include/opal-api.h | 4 | ||||
| -rw-r--r-- | include/powercap.h | 43 |
2 files changed, 46 insertions, 1 deletions
diff --git a/include/opal-api.h b/include/opal-api.h index d2137d6..3ad4898 100644 --- a/include/opal-api.h +++ b/include/opal-api.h @@ -208,7 +208,9 @@ #define OPAL_IMC_COUNTERS_INIT 149 #define OPAL_IMC_COUNTERS_START 150 #define OPAL_IMC_COUNTERS_STOP 151 -#define OPAL_LAST 151 +#define OPAL_GET_POWERCAP 152 +#define OPAL_SET_POWERCAP 153 +#define OPAL_LAST 153 /* Device tree flags */ diff --git a/include/powercap.h b/include/powercap.h new file mode 100644 index 0000000..ec5e126 --- /dev/null +++ b/include/powercap.h @@ -0,0 +1,43 @@ +/* Copyright 2017 IBM Corp. + * + * Licensed under the Apache License, Version 2.0 (the "License"); + * you may not use this file except in compliance with the License. + * You may obtain a copy of the License at + * + * http://www.apache.org/licenses/LICENSE-2.0 + * + * Unless required by applicable law or agreed to in writing, software + * distributed under the License is distributed on an "AS IS" BASIS, + * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or + * implied. + * See the License for the specific language governing permissions and + * limitations under the License. + */ + +#ifndef __POWERCAP_H +#define __POWERCAP_H + +#include <opal.h> + +enum powercap_class { + POWERCAP_CLASS_OCC, +}; + +/* + * Powercap handle is defined as u32. The first and last bytes are + * used to indicate the class and attribute. + * + * | Class | Reserved | Attribute | + * |-------|---------------|-----------| + */ + +#define powercap_make_handle(class, attr) (((class & 0xF) << 24) | (attr & 0xF)) + +#define powercap_get_class(handle) ((handle >> 24) & 0xF) +#define powercap_get_attr(handle) (handle & 0xF) + +/* Powercap OCC interface */ +int occ_get_powercap(u32 handle, u32 *pcap); +int occ_set_powercap(u32 handle, int token, u32 pcap); + +#endif /* __POWERCAP_H */ |