From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from e23smtp02.au.ibm.com (e23smtp02.au.ibm.com [202.81.31.144]) (using TLSv1 with cipher CAMELLIA256-SHA (256/256 bits)) (No client certificate requested) by lists.ozlabs.org (Postfix) with ESMTPS id 4931E1A0E4A for ; Thu, 11 Jun 2015 05:52:52 +1000 (AEST) Received: from /spool/local by e23smtp02.au.ibm.com with IBM ESMTP SMTP Gateway: Authorized Use Only! Violators will be prosecuted for from ; Thu, 11 Jun 2015 05:52:50 +1000 Received: from d23relay06.au.ibm.com (d23relay06.au.ibm.com [9.185.63.219]) by d23dlp02.au.ibm.com (Postfix) with ESMTP id E1F972BB0040 for ; Thu, 11 Jun 2015 05:52:47 +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 t5AJqcKd60227732 for ; Thu, 11 Jun 2015 05:52:47 +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 t5AJqEck003261 for ; Thu, 11 Jun 2015 05:52:15 +1000 From: Vipin K Parashar To: linuxppc-dev@lists.ozlabs.org Cc: mpe@ellerman.id.au, joel@jms.id.au, stewart@linux.vnet.ibm.com, vaibhav@linux.vnet.ibm.com, Vipin K Parashar Subject: [PATCH v8] powerpc/powernv: Poweroff (EPOW, DPO) events support for PowerNV platform Date: Thu, 11 Jun 2015 01:21:48 +0530 Message-Id: <1433965909-9910-1-git-send-email-vipin@linux.vnet.ibm.com> List-Id: Linux on PowerPC Developers Mail List List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , This patch adds support for FSP (Flexible Service Processor) EPOW (Early Power Off Warning) and DPO (Delayed Power Off) events for the PowerNV platform. EPOW events are generated by FSP due to various critical system conditions that require system shutdown. A few examples of these conditions are high ambient temperature or system running on UPS power with low UPS battery. DPO event is generated in response to admin initiated system shutdown request. Upon receipt of EPOW and DPO events the host kernel invokes orderly_poweroff() for performing graceful system shutdown. Reviewed-by: Joel Stanley Reviewed-by: Vaibhav Jain Reviewed-by: Michael Ellerman Changes in v8: - Added logic to filter events which doesn't require system shutdown for EPOW scenario. Changes in v7: - Fixed logic to check epow support to avoid EPOW, DPO handling path for BMC systems. Changes in v6: - Made below changes as suggested by Michael Ellerman on previous patch. - Changed EPOW, DPO notifier blocks to use opal_power_control_event() and enhanced opal_power_control_event() to handle EPOW and DPO events. - Reorganized code and added/changed few variable, function names removing older ones. - Minor cleanup like removing unused headers, blank lines etc. Changes in v5: - Made changes to address review comments on previous patch. Changes in v4: - Made changes to address review comments on previous patch. Changes in v3: - Made changes to immediately call orderly_poweroff upon receipt of OPAL EPOW, DPO notifications. - Made code changes to address review comments on previous patch. - Made code changes to use existing OPAL EPOW API. - Removed patch to extract EPOW event timeout from OPAL device-tree. Changes in v2: - Made code changes to improve code as per previous review comments. - Added patch to obtain EPOW event timeout values from OPAL device-tree. Vipin K Parashar (1): powerpc/powernv: Add poweroff (EPOW, DPO) events support for PowerNV platform arch/powerpc/include/asm/opal-api.h | 40 +++++++ arch/powerpc/include/asm/opal.h | 3 +- arch/powerpc/platforms/powernv/opal-power.c | 147 ++++++++++++++++++++++--- arch/powerpc/platforms/powernv/opal-wrappers.S | 1 + 4 files changed, 173 insertions(+), 18 deletions(-) -- 1.9.3