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Herne" To: linux-s390@vger.kernel.org Cc: linux-kernel@vger.kernel.org, pasic@linux.ibm.com, akrowiak@linux.ibm.com Subject: [PATCH 2/3] s390/vfio-ap: Add sysfs attr, queue_configuration, to export mdev state Date: Fri, 26 Jan 2024 09:35:32 -0500 Message-ID: <20240126143533.14043-3-jjherne@linux.ibm.com> X-Mailer: git-send-email 2.41.0 In-Reply-To: <20240126143533.14043-1-jjherne@linux.ibm.com> References: <20240126143533.14043-1-jjherne@linux.ibm.com> Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: quoted-printable X-TM-AS-GCONF: 00 X-Proofpoint-GUID: yjoNoCCVQS0v0kHK1USf5QXm4i1TeEUs X-Proofpoint-ORIG-GUID: yjoNoCCVQS0v0kHK1USf5QXm4i1TeEUs X-Proofpoint-Virus-Version: vendor=baseguard engine=ICAP:2.0.272,Aquarius:18.0.1011,Hydra:6.0.619,FMLib:17.11.176.26 definitions=2024-01-25_14,2024-01-25_01,2023-05-22_02 X-Proofpoint-Spam-Details: rule=outbound_notspam policy=outbound score=0 mlxscore=0 spamscore=0 clxscore=1015 suspectscore=0 bulkscore=0 priorityscore=1501 impostorscore=0 adultscore=0 phishscore=0 lowpriorityscore=0 mlxlogscore=999 malwarescore=0 classifier=spam adjust=0 reason=mlx scancount=1 engine=8.12.0-2311290000 definitions=main-2401260106 Content-Type: text/plain; charset="utf-8" Add ap_config sysfs attribute. This will provide the means for setting or displaying the adapters, domains and control domains assigned to the vfio-ap mediated device in a single operation. This sysfs attribute is comprised of three masks: One for adapters, one for domains, and one for control domains. This attribute is intended to be used by mdevctl to query a vfio-ap mediated device's state. Signed-off-by: Jason J. Herne Reviewed-by: Anthony Krowiak --- drivers/s390/crypto/vfio_ap_ops.c | 27 +++++++++++++++++++++++++++ 1 file changed, 27 insertions(+) diff --git a/drivers/s390/crypto/vfio_ap_ops.c b/drivers/s390/crypto/vfio_a= p_ops.c index 243d252bc631..96293683b939 100644 --- a/drivers/s390/crypto/vfio_ap_ops.c +++ b/drivers/s390/crypto/vfio_ap_ops.c @@ -1508,6 +1508,32 @@ static ssize_t guest_matrix_show(struct device *dev, } static DEVICE_ATTR_RO(guest_matrix); =20 +static ssize_t write_ap_bitmap(unsigned long *bitmap, char *buf, int offse= t, char sep) +{ + return sysfs_emit_at(buf, offset, "0x%016lx%016lx%016lx%016lx%c", + bitmap[0], bitmap[1], bitmap[2], bitmap[3], sep); +} + +static ssize_t ap_config_show(struct device *dev, struct device_attribute = *attr, + char *buf) +{ + struct ap_matrix_mdev *matrix_mdev =3D dev_get_drvdata(dev); + int idx =3D 0; + + idx +=3D write_ap_bitmap(matrix_mdev->matrix.apm, buf, idx, ','); + idx +=3D write_ap_bitmap(matrix_mdev->matrix.aqm, buf, idx, ','); + idx +=3D write_ap_bitmap(matrix_mdev->matrix.adm, buf, idx, '\n'); + + return idx; +} + +static ssize_t ap_config_store(struct device *dev, struct device_attribute= *attr, + const char *buf, size_t count) +{ + return count; +} +static DEVICE_ATTR_RW(ap_config); + static struct attribute *vfio_ap_mdev_attrs[] =3D { &dev_attr_assign_adapter.attr, &dev_attr_unassign_adapter.attr, @@ -1515,6 +1541,7 @@ static struct attribute *vfio_ap_mdev_attrs[] =3D { &dev_attr_unassign_domain.attr, &dev_attr_assign_control_domain.attr, &dev_attr_unassign_control_domain.attr, + &dev_attr_ap_config.attr, &dev_attr_control_domains.attr, &dev_attr_matrix.attr, &dev_attr_guest_matrix.attr, --=20 2.41.0