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=-8.8 required=3.0 tests=HEADER_FROM_DIFFERENT_DOMAINS, INCLUDES_PATCH,MAILING_LIST_MULTI,SIGNED_OFF_BY,SPF_PASS,URIBL_BLOCKED, 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 15FECC0044C for ; Wed, 31 Oct 2018 18:13:14 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id C989720664 for ; Wed, 31 Oct 2018 18:13:13 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org C989720664 Authentication-Results: mail.kernel.org; dmarc=fail (p=none dis=none) header.from=linux.ibm.com Authentication-Results: mail.kernel.org; spf=none smtp.mailfrom=linux-kernel-owner@vger.kernel.org Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1730171AbeKADMT (ORCPT ); Wed, 31 Oct 2018 23:12:19 -0400 Received: from mx0b-001b2d01.pphosted.com ([148.163.158.5]:50846 "EHLO mx0a-001b2d01.pphosted.com" rhost-flags-OK-OK-OK-FAIL) by vger.kernel.org with ESMTP id S1730128AbeKADMS (ORCPT ); Wed, 31 Oct 2018 23:12:18 -0400 Received: from pps.filterd (m0098413.ppops.net [127.0.0.1]) by mx0b-001b2d01.pphosted.com (8.16.0.22/8.16.0.22) with SMTP id w9VIAcEe005020 for ; Wed, 31 Oct 2018 14:13:10 -0400 Received: from e06smtp03.uk.ibm.com (e06smtp03.uk.ibm.com [195.75.94.99]) by mx0b-001b2d01.pphosted.com with ESMTP id 2nff6975wa-1 (version=TLSv1.2 cipher=AES256-GCM-SHA384 bits=256 verify=NOT) for ; Wed, 31 Oct 2018 14:13:10 -0400 Received: from localhost by e06smtp03.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, 31 Oct 2018 18:13:05 -0000 Received: from d06av25.portsmouth.uk.ibm.com (d06av25.portsmouth.uk.ibm.com [9.149.105.61]) by b06cxnps3074.portsmouth.uk.ibm.com (8.14.9/8.14.9/NCO v10.0) with ESMTP id w9VID3Nd57344114 (version=TLSv1/SSLv3 cipher=DHE-RSA-AES256-GCM-SHA384 bits=256 verify=FAIL); Wed, 31 Oct 2018 18:13:03 GMT Received: from d06av25.portsmouth.uk.ibm.com (unknown [127.0.0.1]) by IMSVA (Postfix) with ESMTP id 8F09A11C054; Wed, 31 Oct 2018 18:13:03 +0000 (GMT) Received: from d06av25.portsmouth.uk.ibm.com (unknown [127.0.0.1]) by IMSVA (Postfix) with ESMTP id 3022811C050; Wed, 31 Oct 2018 18:13:03 +0000 (GMT) Received: from morel-ThinkPad-W530.boeblingen.de.ibm.com (unknown [9.152.224.73]) by d06av25.portsmouth.uk.ibm.com (Postfix) with ESMTP; Wed, 31 Oct 2018 18:13:03 +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 v1 4/7] vfio: ap: AP Queue Interrupt Control VFIO ioctl calls Date: Wed, 31 Oct 2018 19:12:54 +0100 X-Mailer: git-send-email 2.7.4 In-Reply-To: <1541009577-29656-1-git-send-email-pmorel@linux.ibm.com> References: <1541009577-29656-1-git-send-email-pmorel@linux.ibm.com> X-TM-AS-GCONF: 00 x-cbid: 18103118-0012-0000-0000-000002C1360B X-IBM-AV-DETECTION: SAVI=unused REMOTE=unused XFE=unused x-cbparentid: 18103118-0013-0000-0000-000020F5635D Message-Id: <1541009577-29656-5-git-send-email-pmorel@linux.ibm.com> X-Proofpoint-Virus-Version: vendor=fsecure engine=2.50.10434:,, definitions=2018-10-31_06:,, signatures=0 X-Proofpoint-Spam-Details: rule=outbound_notspam policy=outbound score=0 priorityscore=1501 malwarescore=0 suspectscore=1 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=8.0.1-1807170000 definitions=main-1810310150 Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org This is the implementation of the VFIO ioctl calls to handle the AQIC interception and use GISA to handle interrupts. Signed-off-by: Pierre Morel --- drivers/s390/crypto/vfio_ap_ops.c | 95 +++++++++++++++++++++++++++++++ 1 file changed, 95 insertions(+) diff --git a/drivers/s390/crypto/vfio_ap_ops.c b/drivers/s390/crypto/vfio_ap_ops.c index 272ef427dcc0..f68102163bf4 100644 --- a/drivers/s390/crypto/vfio_ap_ops.c +++ b/drivers/s390/crypto/vfio_ap_ops.c @@ -895,12 +895,107 @@ static int vfio_ap_mdev_get_device_info(unsigned long arg) return copy_to_user((void __user *)arg, &info, minsz); } +static int ap_ioctl_setirq(struct ap_matrix_mdev *matrix_mdev, + struct vfio_ap_aqic *parm) +{ + struct aqic_gisa aqic_gisa = reg2aqic(0); + struct kvm_s390_gisa *gisa = matrix_mdev->kvm->arch.gisa; + struct ap_status ap_status = reg2status(0); + unsigned long p; + int ret = -1; + int apqn; + uint32_t gd; + + apqn = (int)(parm->cmd & 0xffff); + + gd = matrix_mdev->kvm->vcpus[0]->arch.sie_block->gd; + if (gd & 0x01) + aqic_gisa.f = 1; + aqic_gisa.gisc = matrix_mdev->gisc; + aqic_gisa.isc = GAL_ISC; + aqic_gisa.ir = 1; + aqic_gisa.gisao = gisa->next_alert >> 4; + + p = (unsigned long) page_address(matrix_mdev->map->page); + p += (matrix_mdev->map->guest_addr & 0x0fff); + + ret = ap_host_aqic((uint64_t)apqn, aqic2reg(aqic_gisa), p); + parm->status = ret; + + ap_status = reg2status(ret); + return (ap_status.rc) ? -EIO : 0; +} + +static int ap_ioctl_clrirq(struct ap_matrix_mdev *matrix_mdev, + struct vfio_ap_aqic *parm) +{ + struct aqic_gisa aqic_gisa = reg2aqic(0); + struct ap_status ap_status = reg2status(0); + int apqn; + int retval; + uint32_t gd; + + apqn = (int)(parm->cmd & 0xffff); + + gd = matrix_mdev->kvm->vcpus[0]->arch.sie_block->gd; + if (gd & 0x01) + aqic_gisa.f = 1; + aqic_gisa.ir = 0; + + retval = ap_host_aqic((uint64_t)apqn, aqic2reg(aqic_gisa), 0); + parm->status = retval; + + ap_status = reg2status(retval); + return (ap_status.rc) ? -EIO : 0; +} + static ssize_t vfio_ap_mdev_ioctl(struct mdev_device *mdev, unsigned int cmd, unsigned long arg) { int ret; + struct ap_matrix_mdev *matrix_mdev = mdev_get_drvdata(mdev); + struct s390_io_adapter *adapter; + struct vfio_ap_aqic parm; + struct s390_map_info *map; + int apqn, found = 0; switch (cmd) { + case VFIO_AP_SET_IRQ: + if (copy_from_user(&parm, (void __user *)arg, sizeof(parm))) + return -EFAULT; + apqn = (int)(parm.cmd & 0xffff); + parm.status &= 0x00000000ffffffffUL; + matrix_mdev->gisc = parm.status & 0x07; + /* find the adapter */ + adapter = matrix_mdev->kvm->arch.adapters[parm.adapter_id]; + if (!adapter) + return -ENOENT; + down_write(&adapter->maps_lock); + list_for_each_entry(map, &adapter->maps, list) { + if (map->guest_addr == parm.nib) { + found = 1; + break; + } + } + up_write(&adapter->maps_lock); + + if (!found) + return -EINVAL; + + matrix_mdev->map = map; + ret = ap_ioctl_setirq(matrix_mdev, &parm); + parm.status &= 0x00000000ffffffffUL; + if (copy_to_user((void __user *)arg, &parm, sizeof(parm))) + return -EFAULT; + + break; + case VFIO_AP_CLEAR_IRQ: + if (copy_from_user(&parm, (void __user *)arg, sizeof(parm))) + return -EFAULT; + ret = ap_ioctl_clrirq(matrix_mdev, &parm); + if (copy_to_user((void __user *)arg, &parm, sizeof(parm))) + return -EFAULT; + break; case VFIO_DEVICE_GET_INFO: ret = vfio_ap_mdev_get_device_info(arg); break; -- 2.17.0