From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1753364AbeDOVX6 (ORCPT ); Sun, 15 Apr 2018 17:23:58 -0400 Received: from mx0b-001b2d01.pphosted.com ([148.163.158.5]:57336 "EHLO mx0a-001b2d01.pphosted.com" rhost-flags-OK-OK-OK-FAIL) by vger.kernel.org with ESMTP id S1753187AbeDOVXA (ORCPT ); Sun, 15 Apr 2018 17:23:00 -0400 From: Tony Krowiak To: linux-s390@vger.kernel.org, linux-kernel@vger.kernel.org, kvm@vger.kernel.org Cc: freude@de.ibm.com, schwidefsky@de.ibm.com, heiko.carstens@de.ibm.com, borntraeger@de.ibm.com, cohuck@redhat.com, kwankhede@nvidia.com, bjsdjshi@linux.vnet.ibm.com, pbonzini@redhat.com, alex.williamson@redhat.com, pmorel@linux.vnet.ibm.com, alifm@linux.vnet.ibm.com, mjrosato@linux.vnet.ibm.com, jjherne@linux.vnet.ibm.com, thuth@redhat.com, pasic@linux.vnet.ibm.com, berrange@redhat.com, fiuczy@linux.vnet.ibm.com, buendgen@de.ibm.com, akrowiak@linux.vnet.ibm.com Subject: [PATCH v4 12/15] s390: vfio-ap: sysfs interface to view matrix mdev matrix Date: Sun, 15 Apr 2018 17:22:22 -0400 X-Mailer: git-send-email 1.7.1 In-Reply-To: <1523827345-11600-1-git-send-email-akrowiak@linux.vnet.ibm.com> References: <1523827345-11600-1-git-send-email-akrowiak@linux.vnet.ibm.com> X-TM-AS-GCONF: 00 x-cbid: 18041521-0052-0000-0000-000002DB5A21 X-IBM-SpamModules-Scores: X-IBM-SpamModules-Versions: BY=3.00008862; HX=3.00000241; KW=3.00000007; PH=3.00000004; SC=3.00000257; SDB=6.01018429; UDB=6.00519481; IPR=6.00797666; MB=3.00020592; MTD=3.00000008; XFM=3.00000015; UTC=2018-04-15 21:22:57 X-IBM-AV-DETECTION: SAVI=unused REMOTE=unused XFE=unused x-cbparentid: 18041521-0053-0000-0000-00005C578077 Message-Id: <1523827345-11600-13-git-send-email-akrowiak@linux.vnet.ibm.com> X-Proofpoint-Virus-Version: vendor=fsecure engine=2.50.10434:,, definitions=2018-04-15_10:,, signatures=0 X-Proofpoint-Spam-Details: rule=outbound_notspam policy=outbound score=0 priorityscore=1501 malwarescore=0 suspectscore=0 phishscore=0 bulkscore=0 spamscore=0 clxscore=1015 lowpriorityscore=0 impostorscore=0 adultscore=0 classifier=spam adjust=0 reason=mlx scancount=1 engine=8.0.1-1709140000 definitions=main-1804150214 Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Provides a sysfs interface to view the AP matrix configured for the mediated matrix device. The relevant sysfs structures are: /sys/devices/vfio_ap ... [matrix] ...... [mdev_supported_types] ......... [vfio_ap-passthrough] ............ [devices] ...............[$uuid] .................. matrix To view the matrix configured for the mediated matrix device, print the matrix file: cat matrix Signed-off-by: Tony Krowiak --- drivers/s390/crypto/vfio_ap_ops.c | 27 +++++++++++++++++++++++++++ 1 files changed, 27 insertions(+), 0 deletions(-) diff --git a/drivers/s390/crypto/vfio_ap_ops.c b/drivers/s390/crypto/vfio_ap_ops.c index 413ecbb..bc2b05e 100644 --- a/drivers/s390/crypto/vfio_ap_ops.c +++ b/drivers/s390/crypto/vfio_ap_ops.c @@ -701,6 +701,32 @@ static ssize_t control_domains_show(struct device *dev, } DEVICE_ATTR_RO(control_domains); +static ssize_t matrix_show(struct device *dev, struct device_attribute *attr, + char *buf) +{ + struct mdev_device *mdev = mdev_from_dev(dev); + struct ap_matrix_mdev *matrix_mdev = mdev_get_drvdata(mdev); + char *bufpos = buf; + unsigned long apid; + unsigned long apqi; + int nchars = 0; + int n; + + for_each_set_bit_inv(apid, matrix_mdev->matrix->apm, + matrix_mdev->matrix->apm_max) { + for_each_set_bit_inv(apqi, matrix_mdev->matrix->aqm, + matrix_mdev->matrix->aqm_max) { + n = sprintf(bufpos, "%02lx.%04lx\n", apid, apqi); + bufpos += n; + nchars += n; + } + } + + return nchars; +} +DEVICE_ATTR_RO(matrix); + + static struct attribute *vfio_ap_mdev_attrs[] = { &dev_attr_assign_adapter.attr, &dev_attr_unassign_adapter.attr, @@ -709,6 +735,7 @@ static ssize_t control_domains_show(struct device *dev, &dev_attr_assign_control_domain.attr, &dev_attr_unassign_control_domain.attr, &dev_attr_control_domains.attr, + &dev_attr_matrix.attr, NULL, }; -- 1.7.1