From patchwork Wed Sep 21 12:15:27 2016 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Gavin Shan X-Patchwork-Id: 672849 Return-Path: X-Original-To: patchwork-incoming@ozlabs.org Delivered-To: patchwork-incoming@ozlabs.org Received: from lists.ozlabs.org (lists.ozlabs.org [103.22.144.68]) (using TLSv1.2 with cipher AECDH-AES256-SHA (256/256 bits)) (No client certificate requested) by ozlabs.org (Postfix) with ESMTPS id 3sfJZf4BRQz9sQw for ; Wed, 21 Sep 2016 22:19:06 +1000 (AEST) Received: from lists.ozlabs.org (lists.ozlabs.org [IPv6:2401:3900:2:1::3]) by lists.ozlabs.org (Postfix) with ESMTP id 3sfJZf3PSpzDsjg for ; Wed, 21 Sep 2016 22:19:06 +1000 (AEST) X-Original-To: linuxppc-dev@lists.ozlabs.org Delivered-To: linuxppc-dev@lists.ozlabs.org Received: from ozlabs.org (ozlabs.org [IPv6:2401:3900:2:1::2]) (using TLSv1.2 with cipher AECDH-AES256-SHA (256/256 bits)) (No client certificate requested) by lists.ozlabs.org (Postfix) with ESMTPS id 3sfJVf3TJ1zDshZ for ; Wed, 21 Sep 2016 22:15:38 +1000 (AEST) Received: by ozlabs.org (Postfix) id 3sfJVf0bjcz9syB; Wed, 21 Sep 2016 22:15:38 +1000 (AEST) Delivered-To: linuxppc-dev@ozlabs.org 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 3sfJVd3XD8z9sxb for ; Wed, 21 Sep 2016 22:15:35 +1000 (AEST) Received: from pps.filterd (m0098417.ppops.net [127.0.0.1]) by mx0a-001b2d01.pphosted.com (8.16.0.17/8.16.0.17) with SMTP id u8LCDnod139801 for ; Wed, 21 Sep 2016 08:15:33 -0400 Received: from e23smtp04.au.ibm.com (e23smtp04.au.ibm.com [202.81.31.146]) by mx0a-001b2d01.pphosted.com with ESMTP id 25kkqb021d-1 (version=TLSv1.2 cipher=AES256-SHA bits=256 verify=NOT) for ; Wed, 21 Sep 2016 08:15:32 -0400 Received: from localhost by e23smtp04.au.ibm.com with IBM ESMTP SMTP Gateway: Authorized Use Only! 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Violators will be prosecuted; Wed, 21 Sep 2016 22:15:27 +1000 Received: from d23relay08.au.ibm.com (d23relay08.au.ibm.com [9.185.71.33]) by d23dlp02.au.ibm.com (Postfix) with ESMTP id A40302BB0045 for ; Wed, 21 Sep 2016 22:15:26 +1000 (EST) Received: from d23av03.au.ibm.com (d23av03.au.ibm.com [9.190.234.97]) by d23relay08.au.ibm.com (8.14.9/8.14.9/NCO v10.0) with ESMTP id u8LCFQuD66977798 for ; Wed, 21 Sep 2016 22:15:26 +1000 Received: from d23av03.au.ibm.com (localhost [127.0.0.1]) by d23av03.au.ibm.com (8.14.4/8.14.4/NCO v10.0 AVout) with ESMTP id u8LCFQav012573 for ; Wed, 21 Sep 2016 22:15:26 +1000 Received: from gwshan ([9.192.186.78]) by d23av03.au.ibm.com (8.14.4/8.14.4/NCO v10.0 AVin) with SMTP id u8LCFPqI012566; Wed, 21 Sep 2016 22:15:25 +1000 Received: by gwshan (Postfix, from userid 1000) id 83F3294307B; Wed, 21 Sep 2016 22:15:33 +1000 (AEST) From: Gavin Shan To: linux-pci@vger.kernel.org, linuxppc-dev@ozlabs.org Subject: [PATCH 1/4] powerpc/eeh: Allow to freeze PE in eeh_pe_set_option() Date: Wed, 21 Sep 2016 22:15:27 +1000 X-Mailer: git-send-email 2.1.0 In-Reply-To: <1474460130-8316-1-git-send-email-gwshan@linux.vnet.ibm.com> References: <1474460130-8316-1-git-send-email-gwshan@linux.vnet.ibm.com> X-TM-AS-MML: disable X-Content-Scanned: Fidelis XPS MAILER x-cbid: 16092112-0012-0000-0000-000001CD08E2 X-IBM-AV-DETECTION: SAVI=unused REMOTE=unused XFE=unused x-cbparentid: 16092112-0013-0000-0000-0000060E38FE Message-Id: <1474460130-8316-2-git-send-email-gwshan@linux.vnet.ibm.com> X-Proofpoint-Virus-Version: vendor=fsecure engine=2.50.10432:, , definitions=2016-09-21_07:, , signatures=0 X-Proofpoint-Spam-Details: rule=outbound_notspam policy=outbound score=0 spamscore=0 suspectscore=0 malwarescore=0 phishscore=0 adultscore=0 bulkscore=0 classifier=spam adjust=0 reason=mlx scancount=1 engine=8.0.1-1609020000 definitions=main-1609210223 X-BeenThere: linuxppc-dev@lists.ozlabs.org X-Mailman-Version: 2.1.23 Precedence: list List-Id: Linux on PowerPC Developers Mail List List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: bhelgaas@google.com, Gavin Shan Errors-To: linuxppc-dev-bounces+patchwork-incoming=ozlabs.org@lists.ozlabs.org Sender: "Linuxppc-dev" Function eeh_pe_set_option() is used to apply the requested options (enable, disable, unfreeze) in EEH virtualization path. The semantics of this function isn't complete until freezing is supported. This allows to freeze the indicated PE. The new semantics is going to be used in PCI surprise hot remove path, to freeze removed PCI devices (PE) to avoid unexpected EEH error reporting. Signed-off-by: Gavin Shan --- arch/powerpc/kernel/eeh.c | 1 + 1 file changed, 1 insertion(+) diff --git a/arch/powerpc/kernel/eeh.c b/arch/powerpc/kernel/eeh.c index 7429556..0699f15 100644 --- a/arch/powerpc/kernel/eeh.c +++ b/arch/powerpc/kernel/eeh.c @@ -1502,6 +1502,7 @@ int eeh_pe_set_option(struct eeh_pe *pe, int option) break; case EEH_OPT_THAW_MMIO: case EEH_OPT_THAW_DMA: + case EEH_OPT_FREEZE_PE: if (!eeh_ops || !eeh_ops->set_option) { ret = -ENOENT; break;