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Fri, 15 Mar 2024 16:56:13 +0000 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=oracle.com; h=from : to : cc : subject : date : message-id : in-reply-to : references : mime-version : content-transfer-encoding; s=corp-2023-11-20; bh=ceoE3jO9B2h+pVIG5d/HxPnA+bGppP7/EnHv+dhO8hM=; b=ihoK030n/TN5fxWd7TepDjOOIFFJQ7Mt163MBPW/YzOJM8hKjQeHngfNIoAEbmQxf7dn mHaCV6I3dwukWwXBOoTS2/bpQTrkbE6vQDokyTdctZFij/cfJQ9t1+/KIMpv4SpsWz2F TdCePAKvBGFQQgxGgwy5awrJRF2Llg5xM3YGL3srSd7s3m34z77ITPKn7Bn+W7CCGKe+ DgIQCm9FfkCC75GkdRF6f3kHAU3MGFoLAzr9U5jMb9Kkk/482L91ZXPsa51eGl/6dYLN 8qmUvpUuuYda73WEaP6bwjg2pvshqxnWaatlEj3CHOK2BUreAz8xIUviVbHp1iNktcy0 5A== From: Jonah Palmer To: qemu-devel@nongnu.org Cc: mst@redhat.com, jasowang@redhat.com, eperezma@redhat.com, si-wei.liu@oracle.com, boris.ostrovsky@oracle.com, jonah.palmer@oracle.com, raphael@enfabrica.net, kwolf@redhat.com, hreitz@redhat.com, pasic@linux.ibm.com, borntraeger@linux.ibm.com, farman@linux.ibm.com, thuth@redhat.com, richard.henderson@linaro.org, david@redhat.com, iii@linux.ibm.com, cohuck@redhat.com, pbonzini@redhat.com, fam@euphon.net, stefanha@redhat.com, qemu-block@nongnu.org, qemu-s390x@nongnu.org, leiyang@redhat.com, schalla@marvell.com, vattunuru@marvell.com, jerinj@marvell.com, dtatulea@nvidia.com, virtio-fs@lists.linux.dev Subject: [PATCH v3 for 9.1 3/6] virtio-mmio: Handle extra notification data Date: Fri, 15 Mar 2024 12:55:54 -0400 Message-Id: <20240315165557.26942-4-jonah.palmer@oracle.com> X-Mailer: git-send-email 2.39.3 In-Reply-To: <20240315165557.26942-1-jonah.palmer@oracle.com> References: <20240315165557.26942-1-jonah.palmer@oracle.com> MIME-Version: 1.0 Content-Transfer-Encoding: quoted-printable 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=2024-03-15_04,2024-03-13_01,2023-05-22_02 X-Proofpoint-Spam-Details: rule=notspam policy=default score=0 adultscore=0 phishscore=0 mlxlogscore=999 malwarescore=0 mlxscore=0 bulkscore=0 spamscore=0 suspectscore=0 classifier=spam adjust=0 reason=mlx scancount=1 engine=8.12.0-2311290000 definitions=main-2403150138 X-Proofpoint-GUID: JIylqI0H-9VdzpPZ2UK40EG-1b1_EXPr X-Proofpoint-ORIG-GUID: JIylqI0H-9VdzpPZ2UK40EG-1b1_EXPr Received-SPF: pass (zohomail.com: domain of gnu.org designates 209.51.188.17 as permitted sender) client-ip=209.51.188.17; envelope-from=qemu-devel-bounces+importer=patchew.org@nongnu.org; helo=lists.gnu.org; Received-SPF: pass client-ip=205.220.165.32; envelope-from=jonah.palmer@oracle.com; helo=mx0a-00069f02.pphosted.com X-Spam_score_int: -20 X-Spam_score: -2.1 X-Spam_bar: -- X-Spam_report: (-2.1 / 5.0 requ) BAYES_00=-1.9, DKIMWL_WL_MED=-0.001, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_AU=-0.1, DKIM_VALID_EF=-0.1, RCVD_IN_MSPIKE_H4=0.001, RCVD_IN_MSPIKE_WL=0.001, SPF_HELO_NONE=0.001, SPF_PASS=-0.001, T_SCC_BODY_TEXT_LINE=-0.01 autolearn=ham autolearn_force=no X-Spam_action: no action X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: qemu-devel-bounces+importer=patchew.org@nongnu.org Sender: qemu-devel-bounces+importer=patchew.org@nongnu.org X-ZohoMail-DKIM: pass (identity @oracle.com) X-ZM-MESSAGEID: 1710521846346100001 Content-Type: text/plain; charset="utf-8" Add support to virtio-mmio devices for handling the extra data sent from the driver to the device when the VIRTIO_F_NOTIFICATION_DATA transport feature has been negotiated. The extra data that's passed to the virtio-mmio device when this feature is enabled varies depending on the device's virtqueue layout. The data passed to the virtio-mmio device is in the same format as the data passed to virtio-pci devices. Signed-off-by: Jonah Palmer --- hw/virtio/virtio-mmio.c | 10 ++++++++-- 1 file changed, 8 insertions(+), 2 deletions(-) diff --git a/hw/virtio/virtio-mmio.c b/hw/virtio/virtio-mmio.c index 22f9fbcf5a..003c363f0b 100644 --- a/hw/virtio/virtio-mmio.c +++ b/hw/virtio/virtio-mmio.c @@ -248,6 +248,7 @@ static void virtio_mmio_write(void *opaque, hwaddr offs= et, uint64_t value, { VirtIOMMIOProxy *proxy =3D (VirtIOMMIOProxy *)opaque; VirtIODevice *vdev =3D virtio_bus_get_device(&proxy->bus); + uint16_t vq_idx; =20 trace_virtio_mmio_write_offset(offset, value); =20 @@ -407,8 +408,13 @@ static void virtio_mmio_write(void *opaque, hwaddr off= set, uint64_t value, } break; case VIRTIO_MMIO_QUEUE_NOTIFY: - if (value < VIRTIO_QUEUE_MAX) { - virtio_queue_notify(vdev, value); + vq_idx =3D value; + if (vq_idx < VIRTIO_QUEUE_MAX && virtio_queue_get_num(vdev, vq_idx= )) { + if (virtio_vdev_has_feature(vdev, VIRTIO_F_NOTIFICATION_DATA))= { + virtio_queue_set_shadow_avail_idx(virtio_get_queue(vdev, v= q_idx), + (value >> 16) & 0xFFFF); + } + virtio_queue_notify(vdev, vq_idx); } break; case VIRTIO_MMIO_INTERRUPT_ACK: --=20 2.39.3