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=-9.0 required=3.0 tests=HEADER_FROM_DIFFERENT_DOMAINS, INCLUDES_PATCH,MAILING_LIST_MULTI,SIGNED_OFF_BY,SPF_PASS,USER_AGENT_GIT autolearn=ham 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 EF950C43381 for ; Thu, 14 Feb 2019 13:52:19 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id CA15B222D4 for ; Thu, 14 Feb 2019 13:52:19 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S2438976AbfBNNwS (ORCPT ); Thu, 14 Feb 2019 08:52:18 -0500 Received: from mx0b-001b2d01.pphosted.com ([148.163.158.5]:59558 "EHLO mx0a-001b2d01.pphosted.com" rhost-flags-OK-OK-OK-FAIL) by vger.kernel.org with ESMTP id S2405673AbfBNNvY (ORCPT ); Thu, 14 Feb 2019 08:51:24 -0500 Received: from pps.filterd (m0098413.ppops.net [127.0.0.1]) by mx0b-001b2d01.pphosted.com (8.16.0.27/8.16.0.27) with SMTP id x1EDiJHi107153 for ; Thu, 14 Feb 2019 08:51:22 -0500 Received: from e06smtp02.uk.ibm.com (e06smtp02.uk.ibm.com [195.75.94.98]) by mx0b-001b2d01.pphosted.com with ESMTP id 2qn8hf50rv-1 (version=TLSv1.2 cipher=AES256-GCM-SHA384 bits=256 verify=NOT) for ; Thu, 14 Feb 2019 08:51:21 -0500 Received: from localhost by e06smtp02.uk.ibm.com with IBM ESMTP SMTP Gateway: Authorized Use Only! Violators will be prosecuted for from ; Thu, 14 Feb 2019 13:51:20 -0000 Received: from b06cxnps4076.portsmouth.uk.ibm.com (9.149.109.198) by e06smtp02.uk.ibm.com (192.168.101.132) with IBM ESMTP SMTP Gateway: Authorized Use Only! Violators will be prosecuted; (version=TLSv1/SSLv3 cipher=AES256-GCM-SHA384 bits=256/256) Thu, 14 Feb 2019 13:51:16 -0000 Received: from d06av24.portsmouth.uk.ibm.com (d06av24.portsmouth.uk.ibm.com [9.149.105.60]) by b06cxnps4076.portsmouth.uk.ibm.com (8.14.9/8.14.9/NCO v10.0) with ESMTP id x1EDpEEt5898750 (version=TLSv1/SSLv3 cipher=DHE-RSA-AES256-GCM-SHA384 bits=256 verify=FAIL); Thu, 14 Feb 2019 13:51:14 GMT Received: from d06av24.portsmouth.uk.ibm.com (unknown [127.0.0.1]) by IMSVA (Postfix) with ESMTP id C95F442042; Thu, 14 Feb 2019 13:51:14 +0000 (GMT) Received: from d06av24.portsmouth.uk.ibm.com (unknown [127.0.0.1]) by IMSVA (Postfix) with ESMTP id 4375642045; Thu, 14 Feb 2019 13:51:14 +0000 (GMT) Received: from morel-ThinkPad-W530.boeblingen.de.ibm.com (unknown [9.152.224.140]) by d06av24.portsmouth.uk.ibm.com (Postfix) with ESMTP; Thu, 14 Feb 2019 13:51:14 +0000 (GMT) From: Pierre Morel To: borntraeger@de.ibm.com Cc: alex.williamson@redhat.com, cohuck@redhat.com, linux-kernel@vger.kernel.org, linux-s390@vger.kernel.org, kvm@vger.kernel.org, frankja@linux.ibm.com, akrowiak@linux.ibm.com, pasic@linux.ibm.com, david@redhat.com, schwidefsky@de.ibm.com, heiko.carstens@de.ibm.com, freude@linux.ibm.com, mimu@linux.ibm.com Subject: [PATCH v3 3/9] s390: ap: new vfio_ap_queue structure Date: Thu, 14 Feb 2019 14:51:03 +0100 X-Mailer: git-send-email 2.7.4 In-Reply-To: <1550152269-6317-1-git-send-email-pmorel@linux.ibm.com> References: <1550152269-6317-1-git-send-email-pmorel@linux.ibm.com> X-TM-AS-GCONF: 00 x-cbid: 19021413-0008-0000-0000-000002C072A8 X-IBM-AV-DETECTION: SAVI=unused REMOTE=unused XFE=unused x-cbparentid: 19021413-0009-0000-0000-0000222C9547 Message-Id: <1550152269-6317-4-git-send-email-pmorel@linux.ibm.com> X-Proofpoint-Virus-Version: vendor=fsecure engine=2.50.10434:,, definitions=2019-02-14_07:,, signatures=0 X-Proofpoint-Spam-Details: rule=outbound_notspam policy=outbound score=0 priorityscore=1501 malwarescore=0 suspectscore=3 phishscore=0 bulkscore=0 spamscore=0 clxscore=1015 lowpriorityscore=0 mlxscore=0 impostorscore=0 mlxlogscore=999 adultscore=0 classifier=spam adjust=0 reason=mlx scancount=1 engine=8.0.1-1810050000 definitions=main-1902140098 Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org The AP interruptions are assigned on a queue basis and we need some information neloging to the queue to handle interuptions. We add a new structure vfio_ap_queue, to hold per queue information useful to handle interruptions. - apqn: AP queue number (defined here) - isc : Interrupt subclass (defined later) - nib : notification information byte (defined later) The vfio_ap_queue structure is allocated when the vfio_ap_driver is probed and added as driver data to the ap_queue device. It is free on remove. The structure is linked to the matrix_dev host device. Signed-off-by: Pierre Morel Reviewed-by: Tony Krowiak --- drivers/s390/crypto/vfio_ap_drv.c | 23 ++++++++++++++++++++++- drivers/s390/crypto/vfio_ap_private.h | 3 +++ 2 files changed, 25 insertions(+), 1 deletion(-) diff --git a/drivers/s390/crypto/vfio_ap_drv.c b/drivers/s390/crypto/vfio_ap_drv.c index 1fd5fe6..03153e6 100644 --- a/drivers/s390/crypto/vfio_ap_drv.c +++ b/drivers/s390/crypto/vfio_ap_drv.c @@ -46,14 +46,35 @@ static struct ap_device_id ap_queue_ids[] = { MODULE_DEVICE_TABLE(vfio_ap, ap_queue_ids); +/** + * vfio_ap_queue_dev_probe: + * + * Allocate a vfio_ap_queue structure and associate it + * with the device as driver_data. + */ static int vfio_ap_queue_dev_probe(struct ap_device *apdev) { + struct vfio_ap_queue *q; + + q = kzalloc(sizeof(*q), GFP_KERNEL); + if (!q) + return -ENOMEM; + dev_set_drvdata(&apdev->device, q); + q->apqn = to_ap_queue(&apdev->device)->qid; return 0; } +/** + * vfio_ap_queue_dev_remove: + * + * Free the associated vfio_ap_queue structure + */ static void vfio_ap_queue_dev_remove(struct ap_device *apdev) { - /* Nothing to do yet */ + struct vfio_ap_queue *q; + + q = dev_get_drvdata(&apdev->device); + kfree(q); } static void vfio_ap_matrix_dev_release(struct device *dev) diff --git a/drivers/s390/crypto/vfio_ap_private.h b/drivers/s390/crypto/vfio_ap_private.h index 76b7f98..8836f01 100644 --- a/drivers/s390/crypto/vfio_ap_private.h +++ b/drivers/s390/crypto/vfio_ap_private.h @@ -86,4 +86,7 @@ struct ap_matrix_mdev { extern int vfio_ap_mdev_register(void); extern void vfio_ap_mdev_unregister(void); +struct vfio_ap_queue { + int apqn; +}; #endif /* _VFIO_AP_PRIVATE_H_ */ -- 2.7.4