From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-16.8 required=3.0 tests=BAYES_00,DKIM_SIGNED, DKIM_VALID,HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_CR_TRAILER,INCLUDES_PATCH, MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS,USER_AGENT_GIT autolearn=unavailable autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id E0F8BC433E0 for ; Tue, 19 Jan 2021 20:07:56 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 8E0F82310B for ; Tue, 19 Jan 2021 20:07:56 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1729548AbhASUHa (ORCPT ); Tue, 19 Jan 2021 15:07:30 -0500 Received: from mx0b-001b2d01.pphosted.com ([148.163.158.5]:52826 "EHLO mx0a-001b2d01.pphosted.com" rhost-flags-OK-OK-OK-FAIL) by vger.kernel.org with ESMTP id S1728613AbhASUDW (ORCPT ); Tue, 19 Jan 2021 15:03:22 -0500 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 10JK2WFA177644; Tue, 19 Jan 2021 15:02:40 -0500 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=ibm.com; h=from : to : cc : subject : date : message-id : in-reply-to : references; s=pp1; bh=Ll19ePRbwoEsUoHXPbtitX6SHMdAUB9AHe5X2OcjHU8=; b=ohL4nccilAUlyQ016hVzZFb16hXWwJmdELJEsFv/ZMNGmOd5J60ao+MAidVdzXvTY2DW 6eipx2VcitJQcgNXp55TrzcAH+6w+/zMEVFUcHT95iwRgbWTTfXI2hLeVtishY4+ACB0 g/6So5+dYgvW4Av+3IVUne+Tw7fWBOX6jk2Y2U0XAd7qqaGv1duwePk5qUHxNL+s4Khk GSltmzZhkiy/mHjeGzikmRcYEzwtPt2+DKYsGDh5J03Pndk/PbpKeY/naafpfT0aZcgM o3+MyLoObbBAbRKpp7KtXRO/1tfuhWW594iBF3f5BWvNnFzY3wPlmF9QJcBmJEeMNGFH uA== Received: from pps.reinject (localhost [127.0.0.1]) by mx0b-001b2d01.pphosted.com with ESMTP id 366607g5tr-1 (version=TLSv1.2 cipher=ECDHE-RSA-AES256-GCM-SHA384 bits=256 verify=NOT); Tue, 19 Jan 2021 15:02:40 -0500 Received: from m0098416.ppops.net (m0098416.ppops.net [127.0.0.1]) by pps.reinject (8.16.0.36/8.16.0.36) with SMTP id 10JK2aeN178104; Tue, 19 Jan 2021 15:02:39 -0500 Received: from ppma05wdc.us.ibm.com (1b.90.2fa9.ip4.static.sl-reverse.com [169.47.144.27]) by mx0b-001b2d01.pphosted.com with ESMTP id 366607g5tc-1 (version=TLSv1.2 cipher=ECDHE-RSA-AES256-GCM-SHA384 bits=256 verify=NOT); Tue, 19 Jan 2021 15:02:39 -0500 Received: from pps.filterd (ppma05wdc.us.ibm.com [127.0.0.1]) by ppma05wdc.us.ibm.com (8.16.0.42/8.16.0.42) with SMTP id 10JK2U4X025577; Tue, 19 Jan 2021 20:02:39 GMT Received: from b01cxnp23032.gho.pok.ibm.com (b01cxnp23032.gho.pok.ibm.com [9.57.198.27]) by ppma05wdc.us.ibm.com with ESMTP id 363qs90q6v-1 (version=TLSv1.2 cipher=ECDHE-RSA-AES256-GCM-SHA384 bits=256 verify=NOT); Tue, 19 Jan 2021 20:02:39 +0000 Received: from b01ledav006.gho.pok.ibm.com (b01ledav006.gho.pok.ibm.com [9.57.199.111]) by b01cxnp23032.gho.pok.ibm.com (8.14.9/8.14.9/NCO v10.0) with ESMTP id 10JK2b9630933286 (version=TLSv1/SSLv3 cipher=DHE-RSA-AES256-GCM-SHA384 bits=256 verify=OK); Tue, 19 Jan 2021 20:02:37 GMT Received: from b01ledav006.gho.pok.ibm.com (unknown [127.0.0.1]) by IMSVA (Postfix) with ESMTP id 7783EAC05B; Tue, 19 Jan 2021 20:02:37 +0000 (GMT) Received: from b01ledav006.gho.pok.ibm.com (unknown [127.0.0.1]) by IMSVA (Postfix) with ESMTP id 87A93AC059; Tue, 19 Jan 2021 20:02:35 +0000 (GMT) Received: from oc4221205838.ibm.com (unknown [9.211.56.144]) by b01ledav006.gho.pok.ibm.com (Postfix) with ESMTP; Tue, 19 Jan 2021 20:02:35 +0000 (GMT) From: Matthew Rosato To: alex.williamson@redhat.com, cohuck@redhat.com, schnelle@linux.ibm.com Cc: pmorel@linux.ibm.com, borntraeger@de.ibm.com, hca@linux.ibm.com, gor@linux.ibm.com, gerald.schaefer@linux.ibm.com, linux-s390@vger.kernel.org, kvm@vger.kernel.org, linux-kernel@vger.kernel.org Subject: [PATCH 1/4] s390/pci: track alignment/length strictness for zpci_dev Date: Tue, 19 Jan 2021 15:02:27 -0500 Message-Id: <1611086550-32765-2-git-send-email-mjrosato@linux.ibm.com> X-Mailer: git-send-email 1.8.3.1 In-Reply-To: <1611086550-32765-1-git-send-email-mjrosato@linux.ibm.com> References: <1611086550-32765-1-git-send-email-mjrosato@linux.ibm.com> X-TM-AS-GCONF: 00 X-Proofpoint-Virus-Version: vendor=fsecure engine=2.50.10434:6.0.343,18.0.737 definitions=2021-01-19_09:2021-01-18,2021-01-19 signatures=0 X-Proofpoint-Spam-Details: rule=outbound_notspam policy=outbound score=0 lowpriorityscore=0 mlxlogscore=999 malwarescore=0 suspectscore=0 mlxscore=0 impostorscore=0 spamscore=0 phishscore=0 adultscore=0 clxscore=1015 priorityscore=1501 bulkscore=0 classifier=spam adjust=0 reason=mlx scancount=1 engine=8.12.0-2009150000 definitions=main-2101190106 Precedence: bulk List-ID: X-Mailing-List: kvm@vger.kernel.org Some zpci device types (e.g., ISM) follow different rules for length and alignment of pci instructions. Recognize this and keep track of it in the zpci_dev. Signed-off-by: Matthew Rosato Reviewed-by: Niklas Schnelle Reviewed-by: Pierre Morel --- arch/s390/include/asm/pci.h | 3 ++- arch/s390/include/asm/pci_clp.h | 4 +++- arch/s390/pci/pci_clp.c | 1 + 3 files changed, 6 insertions(+), 2 deletions(-) diff --git a/arch/s390/include/asm/pci.h b/arch/s390/include/asm/pci.h index 2126289..f16ffba 100644 --- a/arch/s390/include/asm/pci.h +++ b/arch/s390/include/asm/pci.h @@ -133,7 +133,8 @@ struct zpci_dev { u8 has_hp_slot : 1; u8 is_physfn : 1; u8 util_str_avail : 1; - u8 reserved : 4; + u8 relaxed_align : 1; + u8 reserved : 3; unsigned int devfn; /* DEVFN part of the RID*/ struct mutex lock; diff --git a/arch/s390/include/asm/pci_clp.h b/arch/s390/include/asm/pci_clp.h index 1f4b666..9fb7cbf 100644 --- a/arch/s390/include/asm/pci_clp.h +++ b/arch/s390/include/asm/pci_clp.h @@ -150,7 +150,9 @@ struct clp_rsp_query_pci_grp { u16 : 4; u16 noi : 12; /* number of interrupts */ u8 version; - u8 : 6; + u8 : 4; + u8 relaxed_align : 1; /* Relax length and alignment rules */ + u8 : 1; u8 frame : 1; u8 refresh : 1; /* TLB refresh mode */ u16 reserved2; diff --git a/arch/s390/pci/pci_clp.c b/arch/s390/pci/pci_clp.c index 153720d..630f8fc 100644 --- a/arch/s390/pci/pci_clp.c +++ b/arch/s390/pci/pci_clp.c @@ -103,6 +103,7 @@ static void clp_store_query_pci_fngrp(struct zpci_dev *zdev, zdev->max_msi = response->noi; zdev->fmb_update = response->mui; zdev->version = response->version; + zdev->relaxed_align = response->relaxed_align; switch (response->version) { case 1: -- 1.8.3.1