From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from ozlabs.org (ozlabs.org [103.22.144.67]) (using TLSv1.2 with cipher AECDH-AES256-SHA (256/256 bits)) (No client certificate requested) by lists.ozlabs.org (Postfix) with ESMTPS id 40DE41A0DE1 for ; Mon, 4 May 2015 19:00:26 +1000 (AEST) Received: from e23smtp09.au.ibm.com (e23smtp09.au.ibm.com [202.81.31.142]) (using TLSv1 with cipher DHE-RSA-AES256-SHA (256/256 bits)) (No client certificate requested) by ozlabs.org (Postfix) with ESMTPS id 15A53140157 for ; Mon, 4 May 2015 19:00:26 +1000 (AEST) Received: from /spool/local by e23smtp09.au.ibm.com with IBM ESMTP SMTP Gateway: Authorized Use Only! Violators will be prosecuted for from ; Mon, 4 May 2015 19:00:25 +1000 Received: from d23relay06.au.ibm.com (d23relay06.au.ibm.com [9.185.63.219]) by d23dlp01.au.ibm.com (Postfix) with ESMTP id 24F292CE8040 for ; Mon, 4 May 2015 19:00:23 +1000 (EST) Received: from d23av04.au.ibm.com (d23av04.au.ibm.com [9.190.235.139]) by d23relay06.au.ibm.com (8.14.9/8.14.9/NCO v10.0) with ESMTP id t4490FTx14024886 for ; Mon, 4 May 2015 19:00:23 +1000 Received: from d23av04.au.ibm.com (localhost [127.0.0.1]) by d23av04.au.ibm.com (8.14.4/8.14.4/NCO v10.0 AVout) with ESMTP id t448xoR9023589 for ; Mon, 4 May 2015 18:59:50 +1000 From: Shilpasri G Bhat To: linuxppc-dev@ozlabs.org, linux-kernel@vger.kernel.org Subject: [PATCH v3 2/6] powerpc/powernv: Add definition of OPAL_MSG_OCC message type Date: Mon, 4 May 2015 14:24:08 +0530 Message-Id: <1430729652-14813-3-git-send-email-shilpa.bhat@linux.vnet.ibm.com> In-Reply-To: <1430729652-14813-1-git-send-email-shilpa.bhat@linux.vnet.ibm.com> References: <1430729652-14813-1-git-send-email-shilpa.bhat@linux.vnet.ibm.com> Cc: preeti@linux.vnet.ibm.com, viresh.kumar@linaro.org, rjw@rjwysocki.net, Shilpasri G Bhat , linux-pm@vger.kernel.org List-Id: Linux on PowerPC Developers Mail List List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Add OPAL_MSG_OCC message definition to opal_message_type to receive OCC events like reset, load and throttled. Host performance can be affected when OCC is reset or OCC throttles the max Pstate. We can register to opal_message_notifier to receive OPAL_MSG_OCC type of message and report it to the userspace so as to keep the user informed about the reason for a performance drop in workloads. The reset and load OCC events are notified to kernel when FSP sends OCC_RESET and OCC_LOAD commands. Both reset and load messages are sent to kernel on successful completion of reset and load operation respectively. The throttle OCC event indicates that the Pmax of the chip is reduced. The chip_id and throttle reason for reducing Pmax is also queued along with the message. Additional opal message type OPAL_MSG_PRD is added to maintain compatibility between opal and kernel definition of opal_message_type. Signed-off-by: Shilpasri G Bhat Reviewed-by: Preeti U Murthy --- No change from V2 Change from v1: - Update the commit changelog arch/powerpc/include/asm/opal-api.h | 8 ++++++++ 1 file changed, 8 insertions(+) diff --git a/arch/powerpc/include/asm/opal-api.h b/arch/powerpc/include/asm/opal-api.h index 0321a90..50053b7 100644 --- a/arch/powerpc/include/asm/opal-api.h +++ b/arch/powerpc/include/asm/opal-api.h @@ -352,6 +352,14 @@ enum opal_msg_type { OPAL_MSG_SHUTDOWN, /* params[0] = 1 reboot, 0 shutdown */ OPAL_MSG_HMI_EVT, OPAL_MSG_DPO, + OPAL_MSG_PRD, + OPAL_MSG_OCC, /* + * params[0] = 0 reset, + * 1 load, + * 2 throttle + * params[1] = chip_id + * params[2] = throttle_status + */ OPAL_MSG_TYPE_MAX, }; -- 1.9.3