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[23.128.96.18]) by mx.google.com with ESMTP id he7si1263345ejc.676.2020.12.09.12.49.38; Wed, 09 Dec 2020 12:50:01 -0800 (PST) Received-SPF: pass (google.com: domain of linux-kernel-owner@vger.kernel.org designates 23.128.96.18 as permitted sender) client-ip=23.128.96.18; Authentication-Results: mx.google.com; dkim=pass header.i=@ibm.com header.s=pp1 header.b=J1419j+j; spf=pass (google.com: domain of linux-kernel-owner@vger.kernel.org designates 23.128.96.18 as permitted sender) smtp.mailfrom=linux-kernel-owner@vger.kernel.org; dmarc=pass (p=NONE sp=NONE dis=NONE) header.from=ibm.com Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S2388574AbgLIUaT (ORCPT + 99 others); Wed, 9 Dec 2020 15:30:19 -0500 Received: from mx0a-001b2d01.pphosted.com ([148.163.156.1]:6860 "EHLO mx0a-001b2d01.pphosted.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S2387663AbgLIU36 (ORCPT ); Wed, 9 Dec 2020 15:29:58 -0500 Received: from pps.filterd (m0187473.ppops.net [127.0.0.1]) by mx0a-001b2d01.pphosted.com (8.16.0.42/8.16.0.42) with SMTP id 0B9KCmPm171107; Wed, 9 Dec 2020 15:29:18 -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=J1419j+jfIh9qofTLjUfl/UKmjhRo27Sq/elTRn0Z0SjmZ7pb6ATHmubxTIr5+OYrvQt prn8a+u0CmhFvXfhI7++SYJVPlE0NEs6n+pvNzcPqysGQ6kXym2lJ6AY1n5wHO0OcO3d vFXSmvwmU6vFtC0oc+M7PP1tm73ASW9zta5YR6QBnp25kwhFn9onp0QPyF4sLAmyI23o yKjjQjpODm2QXfnqx73YDeJtt7qJJhimEcJZvx9gYETH2Rv+QQ0F70fXsf6WBtoH42Rq kvZ2rGP54/4HT9G6m6dfivQBSxoN3yr6jfTaCaO12C2a6iXwGOF7KSxw4y36rgKYGlcH lA== Received: from pps.reinject (localhost [127.0.0.1]) by mx0a-001b2d01.pphosted.com with ESMTP id 35avp1pys3-1 (version=TLSv1.2 cipher=ECDHE-RSA-AES256-GCM-SHA384 bits=256 verify=NOT); Wed, 09 Dec 2020 15:29:17 -0500 Received: from m0187473.ppops.net (m0187473.ppops.net [127.0.0.1]) by pps.reinject (8.16.0.36/8.16.0.36) with SMTP id 0B9KLIMd007118; Wed, 9 Dec 2020 15:29:17 -0500 Received: from ppma01wdc.us.ibm.com (fd.55.37a9.ip4.static.sl-reverse.com [169.55.85.253]) by mx0a-001b2d01.pphosted.com with ESMTP id 35avp1pyrq-1 (version=TLSv1.2 cipher=ECDHE-RSA-AES256-GCM-SHA384 bits=256 verify=NOT); Wed, 09 Dec 2020 15:29:17 -0500 Received: from pps.filterd (ppma01wdc.us.ibm.com [127.0.0.1]) by ppma01wdc.us.ibm.com (8.16.0.42/8.16.0.42) with SMTP id 0B9KMAL7015879; Wed, 9 Dec 2020 20:29:16 GMT Received: from b01cxnp23033.gho.pok.ibm.com (b01cxnp23033.gho.pok.ibm.com [9.57.198.28]) by ppma01wdc.us.ibm.com with ESMTP id 3581u9gdy1-1 (version=TLSv1.2 cipher=ECDHE-RSA-AES256-GCM-SHA384 bits=256 verify=NOT); Wed, 09 Dec 2020 20:29:16 +0000 Received: from b01ledav003.gho.pok.ibm.com (b01ledav003.gho.pok.ibm.com [9.57.199.108]) by b01cxnp23033.gho.pok.ibm.com (8.14.9/8.14.9/NCO v10.0) with ESMTP id 0B9KRxWU29884698 (version=TLSv1/SSLv3 cipher=DHE-RSA-AES256-GCM-SHA384 bits=256 verify=OK); Wed, 9 Dec 2020 20:27:59 GMT Received: from b01ledav003.gho.pok.ibm.com (unknown [127.0.0.1]) by IMSVA (Postfix) with ESMTP id 1CE64B2068; Wed, 9 Dec 2020 20:27:59 +0000 (GMT) Received: from b01ledav003.gho.pok.ibm.com (unknown [127.0.0.1]) by IMSVA (Postfix) with ESMTP id EE889B2066; Wed, 9 Dec 2020 20:27:56 +0000 (GMT) Received: from oc4221205838.ibm.com (unknown [9.163.37.122]) by b01ledav003.gho.pok.ibm.com (Postfix) with ESMTP; Wed, 9 Dec 2020 20:27:56 +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: [RFC 1/4] s390/pci: track alignment/length strictness for zpci_dev Date: Wed, 9 Dec 2020 15:27:47 -0500 Message-Id: <1607545670-1557-2-git-send-email-mjrosato@linux.ibm.com> X-Mailer: git-send-email 1.8.3.1 In-Reply-To: <1607545670-1557-1-git-send-email-mjrosato@linux.ibm.com> References: <1607545670-1557-1-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=2020-12-09_16:2020-12-09,2020-12-09 signatures=0 X-Proofpoint-Spam-Details: rule=outbound_notspam policy=outbound score=0 lowpriorityscore=0 adultscore=0 impostorscore=0 malwarescore=0 clxscore=1015 suspectscore=0 mlxscore=0 spamscore=0 priorityscore=1501 bulkscore=0 phishscore=0 mlxlogscore=999 classifier=spam adjust=0 reason=mlx scancount=1 engine=8.12.0-2009150000 definitions=main-2012090140 Precedence: bulk List-ID: X-Mailing-List: linux-kernel@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