From patchwork Wed Mar 4 16:01:20 2020 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: "Pratik R. Sampat" X-Patchwork-Id: 1249108 Return-Path: X-Original-To: patchwork-incoming@ozlabs.org Delivered-To: patchwork-incoming@ozlabs.org Received: from lists.ozlabs.org (lists.ozlabs.org [203.11.71.2]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange X25519 server-signature RSA-PSS (4096 bits)) (No client certificate requested) by ozlabs.org (Postfix) with ESMTPS id 48XdzW5HZSz9sQt for ; Thu, 5 Mar 2020 03:06:31 +1100 (AEDT) Authentication-Results: ozlabs.org; dmarc=none (p=none dis=none) header.from=linux.ibm.com Received: from lists.ozlabs.org (lists.ozlabs.org [IPv6:2401:3900:2:1::3]) by lists.ozlabs.org (Postfix) with ESMTP id 48XdzW3xyxzDqQS for ; Thu, 5 Mar 2020 03:06:31 +1100 (AEDT) X-Original-To: linuxppc-dev@lists.ozlabs.org Delivered-To: linuxppc-dev@lists.ozlabs.org Received: from ozlabs.org (bilbo.ozlabs.org [203.11.71.1]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange X25519 server-signature RSA-PSS (2048 bits) server-digest SHA256) (No client certificate requested) by lists.ozlabs.org (Postfix) with ESMTPS id 48Xdsy55SfzDqTR for ; Thu, 5 Mar 2020 03:01:42 +1100 (AEDT) Authentication-Results: lists.ozlabs.org; dmarc=none (p=none dis=none) header.from=linux.ibm.com Received: from ozlabs.org (bilbo.ozlabs.org [203.11.71.1]) by bilbo.ozlabs.org (Postfix) with ESMTP id 48Xdsx6K9Gz8t9H for ; Thu, 5 Mar 2020 03:01:41 +1100 (AEDT) Received: by ozlabs.org (Postfix) id 48Xdsx5WgFz9sST; Thu, 5 Mar 2020 03:01:41 +1100 (AEDT) Delivered-To: linuxppc-dev@ozlabs.org Authentication-Results: ozlabs.org; spf=pass (sender SPF authorized) smtp.mailfrom=linux.ibm.com (client-ip=148.163.158.5; helo=mx0a-001b2d01.pphosted.com; envelope-from=psampat@linux.ibm.com; receiver=) Authentication-Results: ozlabs.org; dmarc=none (p=none dis=none) header.from=linux.ibm.com Received: from mx0a-001b2d01.pphosted.com (mx0b-001b2d01.pphosted.com [148.163.158.5]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by ozlabs.org (Postfix) with ESMTPS id 48Xdsx1LQnz9sSG for ; Thu, 5 Mar 2020 03:01:40 +1100 (AEDT) Received: from pps.filterd (m0098416.ppops.net [127.0.0.1]) by mx0b-001b2d01.pphosted.com (8.16.0.42/8.16.0.42) with SMTP id 024FuXSt153036 for ; Wed, 4 Mar 2020 11:01:38 -0500 Received: from e06smtp01.uk.ibm.com (e06smtp01.uk.ibm.com [195.75.94.97]) by mx0b-001b2d01.pphosted.com with ESMTP id 2yhsv3ygnq-1 (version=TLSv1.2 cipher=AES256-GCM-SHA384 bits=256 verify=NOT) for ; Wed, 04 Mar 2020 11:01:38 -0500 Received: from localhost by e06smtp01.uk.ibm.com with IBM ESMTP SMTP Gateway: Authorized Use Only! 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Violators will be prosecuted; (version=TLSv1/SSLv3 cipher=AES256-GCM-SHA384 bits=256/256) Wed, 4 Mar 2020 16:01:28 -0000 Received: from d06av26.portsmouth.uk.ibm.com (d06av26.portsmouth.uk.ibm.com [9.149.105.62]) by b06cxnps4075.portsmouth.uk.ibm.com (8.14.9/8.14.9/NCO v10.0) with ESMTP id 024G1QSt42467512 (version=TLSv1/SSLv3 cipher=DHE-RSA-AES256-GCM-SHA384 bits=256 verify=OK); Wed, 4 Mar 2020 16:01:26 GMT Received: from d06av26.portsmouth.uk.ibm.com (unknown [127.0.0.1]) by IMSVA (Postfix) with ESMTP id 3EE92AE058; Wed, 4 Mar 2020 16:01:26 +0000 (GMT) Received: from d06av26.portsmouth.uk.ibm.com (unknown [127.0.0.1]) by IMSVA (Postfix) with ESMTP id F1A56AE051; Wed, 4 Mar 2020 16:01:23 +0000 (GMT) Received: from pratiks-thinkpad.ibmuc.com (unknown [9.85.81.47]) by d06av26.portsmouth.uk.ibm.com (Postfix) with ESMTP; Wed, 4 Mar 2020 16:01:23 +0000 (GMT) From: Pratik Rajesh Sampat To: linuxppc-dev@ozlabs.org, linux-kernel@vger.kernel.org, mpe@ellerman.id.au, mikey@neuling.org, npiggin@gmail.com, vaidy@linux.ibm.com, ego@linux.vnet.ibm.com, skiboot@lists.ozlabs.org, oohall@gmail.com, psampat@linux.ibm.com, pratik.r.sampat@gmail.com Subject: [RFC 0/3] cpuidle/powernv: Interface to handle idle-stop versioning Date: Wed, 4 Mar 2020 21:31:20 +0530 X-Mailer: git-send-email 2.24.1 MIME-Version: 1.0 X-TM-AS-GCONF: 00 x-cbid: 20030416-4275-0000-0000-000003A85BE6 X-IBM-AV-DETECTION: SAVI=unused REMOTE=unused XFE=unused x-cbparentid: 20030416-4276-0000-0000-000038BD6917 Message-Id: X-Proofpoint-Virus-Version: vendor=fsecure engine=2.50.10434:6.0.138, 18.0.572 definitions=2020-03-04_05:2020-03-04, 2020-03-04 signatures=0 X-Proofpoint-Spam-Details: rule=outbound_notspam policy=outbound score=1 bulkscore=0 mlxscore=1 clxscore=1015 mlxlogscore=217 impostorscore=0 malwarescore=0 adultscore=0 phishscore=0 suspectscore=0 spamscore=1 lowpriorityscore=0 priorityscore=1501 classifier=spam adjust=0 reason=mlx scancount=1 engine=8.12.0-2001150001 definitions=main-2003040117 X-BeenThere: linuxppc-dev@lists.ozlabs.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: Linux on PowerPC Developers Mail List List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: linuxppc-dev-bounces+patchwork-incoming=ozlabs.org@lists.ozlabs.org Sender: "Linuxppc-dev" A design patch series illuminates the idea of handling different versions of idle-stop, the properties they support and the quirks that need to be handled before entering or after exiting stop. It also adds a functionality to identify firmware-enabled-stop and set the according bits to encapsulate the support and corresponding handling Corresponding RFC skiboot patch: https://lists.ozlabs.org/pipermail/skiboot/2020-March/016552.html Pratik Rajesh Sampat (3): Interface for an idle-stop dependency structure Demonstration of handling an idle-stop quirk version Introduce capability for firmware-enabled-stop arch/powerpc/include/asm/processor.h | 19 +++++++++++++++++ arch/powerpc/kernel/dt_cpu_ftrs.c | 30 +++++++++++++++++++++++++++ arch/powerpc/platforms/powernv/idle.c | 25 ++++++++++++++++++---- drivers/cpuidle/cpuidle-powernv.c | 3 ++- 4 files changed, 72 insertions(+), 5 deletions(-)