From c6aabe3f2eb51cf1df7da83432b15a37200f1adb Mon Sep 17 00:00:00 2001 From: Shilpasri G Bhat Date: Fri, 28 Jul 2017 00:45:28 +0530 Subject: 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 Signed-off-by: Stewart Smith --- core/powercap.c | 40 ++++++++++++++++++++++++++++++++++++++++ 1 file changed, 40 insertions(+) create mode 100644 core/powercap.c (limited to 'core/powercap.c') diff --git a/core/powercap.c b/core/powercap.c new file mode 100644 index 0000000..50b5996 --- /dev/null +++ b/core/powercap.c @@ -0,0 +1,40 @@ +/* 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. + */ + +#include + +static int opal_get_powercap(u32 handle, int token __unused, u32 *pcap) +{ + if (!pcap || !opal_addr_valid(pcap)) + return OPAL_PARAMETER; + + if (powercap_get_class(handle) == POWERCAP_CLASS_OCC) + return occ_get_powercap(handle, pcap); + + return OPAL_UNSUPPORTED; +}; + +opal_call(OPAL_GET_POWERCAP, opal_get_powercap, 3); + +static int opal_set_powercap(u32 handle, int token, u32 pcap) +{ + if (powercap_get_class(handle) == POWERCAP_CLASS_OCC) + return occ_set_powercap(handle, token, pcap); + + return OPAL_UNSUPPORTED; +}; + +opal_call(OPAL_SET_POWERCAP, opal_set_powercap, 3); -- cgit v1.1