From patchwork Wed Jan 5 00:58:54 2022 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: "Zhijian Li (Fujitsu)\" via" X-Patchwork-Id: 12703937 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from lists.gnu.org (lists.gnu.org [209.51.188.17]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.lore.kernel.org (Postfix) with ESMTPS id 4DDC7C433EF for ; Wed, 5 Jan 2022 01:05:38 +0000 (UTC) Received: from localhost ([::1]:34210 helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1n4ukD-0007gg-AC for qemu-devel@archiver.kernel.org; Tue, 04 Jan 2022 20:05:37 -0500 Received: from eggs.gnu.org ([209.51.188.92]:36662) by lists.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1n4ue3-0007rw-JC for qemu-devel@nongnu.org; Tue, 04 Jan 2022 19:59:15 -0500 Received: from szxga02-in.huawei.com ([45.249.212.188]:4155) by eggs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1n4ue0-0007vB-0H for qemu-devel@nongnu.org; Tue, 04 Jan 2022 19:59:15 -0500 Received: from dggpeml500023.china.huawei.com (unknown [172.30.72.57]) by szxga02-in.huawei.com (SkyGuard) with ESMTP id 4JTB190WSGz9s4h; Wed, 5 Jan 2022 08:58:05 +0800 (CST) Received: from dggpeml100016.china.huawei.com (7.185.36.216) by dggpeml500023.china.huawei.com (7.185.36.114) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_128_GCM_SHA256) id 15.1.2308.20; Wed, 5 Jan 2022 08:59:06 +0800 Received: from DESKTOP-27KDQMV.china.huawei.com (10.174.148.223) by dggpeml100016.china.huawei.com (7.185.36.216) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_128_GCM_SHA256) id 15.1.2308.20; Wed, 5 Jan 2022 08:59:06 +0800 To: , , , CC: , , , , , , Longpeng Subject: [RFC 04/10] vdpa-dev: implement the instance_init/class_init interface Date: Wed, 5 Jan 2022 08:58:54 +0800 Message-ID: <20220105005900.860-5-longpeng2@huawei.com> X-Mailer: git-send-email 2.25.0.windows.1 In-Reply-To: <20220105005900.860-1-longpeng2@huawei.com> References: <20220105005900.860-1-longpeng2@huawei.com> MIME-Version: 1.0 X-Originating-IP: [10.174.148.223] X-ClientProxiedBy: dggems705-chm.china.huawei.com (10.3.19.182) To dggpeml100016.china.huawei.com (7.185.36.216) X-CFilter-Loop: Reflected Received-SPF: pass client-ip=45.249.212.188; envelope-from=longpeng2@huawei.com; helo=szxga02-in.huawei.com X-Spam_score_int: -22 X-Spam_score: -2.3 X-Spam_bar: -- X-Spam_report: (-2.3 / 5.0 requ) RCVD_IN_DNSWL_MED=-2.3, RCVD_IN_MSPIKE_H3=0.001, RCVD_IN_MSPIKE_WL=0.001, SPF_HELO_NONE=0.001, SPF_PASS=-0.001 autolearn=unavailable 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+qemu-devel=archiver.kernel.org@nongnu.org Sender: "Qemu-devel" Reply-to: "Longpeng(Mike)" X-Patchwork-Original-From: "Longpeng(Mike)" via From: "Zhijian Li (Fujitsu)\" via" From: Longpeng Implements the .instance_init and the .class_init interface. Signed-off-by: Longpeng --- hw/virtio/vdpa-dev-pci.c | 80 +++++++++++++++++++++++++++++++++++- hw/virtio/vdpa-dev.c | 68 +++++++++++++++++++++++++++++- include/hw/virtio/vdpa-dev.h | 2 + 3 files changed, 146 insertions(+), 4 deletions(-) diff --git a/hw/virtio/vdpa-dev-pci.c b/hw/virtio/vdpa-dev-pci.c index a5a7b528a9..0af54a26d4 100644 --- a/hw/virtio/vdpa-dev-pci.c +++ b/hw/virtio/vdpa-dev-pci.c @@ -23,14 +23,90 @@ struct VhostVdpaDevicePCI { VhostVdpaDevice vdev; }; +static uint32_t +vdpa_dev_pci_get_info(const char *name, uint64_t cmd, Error **errp) +{ + int device_fd; + uint32_t val; + int ret; + + device_fd = qemu_open(name, O_RDWR, errp); + if (device_fd == -1) { + return (uint32_t)-1; + } + + ret = ioctl(device_fd, cmd, &val); + if (ret < 0) { + error_setg(errp, "vhost-vdpa-device-pci: cmd 0x%lx failed: %s", + cmd, strerror(errno)); + goto out; + } + +out: + close(device_fd); + return val; +} + +static inline uint32_t +vdpa_dev_pci_get_devid(VhostVdpaDevicePCI *dev, Error **errp) +{ + return vdpa_dev_pci_get_info(dev->vdev.vdpa_dev, + VHOST_VDPA_GET_DEVICE_ID, errp); +} + +static inline uint32_t +vdpa_dev_pci_get_vectors_num(VhostVdpaDevicePCI *dev, Error **errp) +{ + return vdpa_dev_pci_get_info(dev->vdev.vdpa_dev, + VHOST_VDPA_GET_VECTORS_NUM, errp); +} + static void vhost_vdpa_device_pci_instance_init(Object *obj) { - return; + VhostVdpaDevicePCI *dev = VHOST_VDPA_DEVICE_PCI(obj); + + virtio_instance_init_common(obj, &dev->vdev, sizeof(dev->vdev), + TYPE_VHOST_VDPA_DEVICE); + object_property_add_alias(obj, "bootindex", OBJECT(&dev->vdev), + "bootindex"); +} + +static Property vhost_vdpa_device_pci_properties[] = { + DEFINE_PROP_END_OF_LIST(), +}; + +static void +vhost_vdpa_device_pci_realize(VirtIOPCIProxy *vpci_dev, Error **errp) +{ + VhostVdpaDevicePCI *dev = VHOST_VDPA_DEVICE_PCI(vpci_dev); + DeviceState *vdev = DEVICE(&dev->vdev); + uint32_t devid; + uint32_t vectors; + + devid = vdpa_dev_pci_get_devid(dev, errp); + if (*errp) { + return; + } + + vectors = vdpa_dev_pci_get_vectors_num(dev, errp); + if (*errp) { + return; + } + + vpci_dev->class_code = virtio_pci_get_class_id(devid); + vpci_dev->pdev_id = virtio_pci_get_pci_devid(devid); + vpci_dev->nvectors = vectors; + qdev_realize(vdev, BUS(&vpci_dev->bus), errp); } static void vhost_vdpa_device_pci_class_init(ObjectClass *klass, void *data) { - return; + DeviceClass *dc = DEVICE_CLASS(klass); + VirtioPCIClass *k = VIRTIO_PCI_CLASS(klass); + + set_bit(DEVICE_CATEGORY_MISC, dc->categories); + device_class_set_props(dc, vhost_vdpa_device_pci_properties); + k->realize = vhost_vdpa_device_pci_realize; } static const VirtioPCIDeviceTypeInfo vhost_vdpa_device_pci_info = { diff --git a/hw/virtio/vdpa-dev.c b/hw/virtio/vdpa-dev.c index f4f92b90b0..790117fb3b 100644 --- a/hw/virtio/vdpa-dev.c +++ b/hw/virtio/vdpa-dev.c @@ -15,16 +15,80 @@ #include "sysemu/sysemu.h" #include "sysemu/runstate.h" -static void vhost_vdpa_device_class_init(ObjectClass *klass, void *data) +static void vhost_vdpa_device_realize(DeviceState *dev, Error **errp) { return; } -static void vhost_vdpa_device_instance_init(Object *obj) +static void vhost_vdpa_device_unrealize(DeviceState *dev) +{ + return; +} + +static void +vhost_vdpa_device_get_config(VirtIODevice *vdev, uint8_t *config) +{ + return; +} + +static void +vhost_vdpa_device_set_config(VirtIODevice *vdev, const uint8_t *config) { return; } +static uint64_t vhost_vdpa_device_get_features(VirtIODevice *vdev, + uint64_t features, + Error **errp) +{ + return (uint64_t)-1; +} + +static void vhost_vdpa_device_set_status(VirtIODevice *vdev, uint8_t status) +{ + return; +} + +static Property vhost_vdpa_device_properties[] = { + DEFINE_PROP_STRING("vdpa-dev", VhostVdpaDevice, vdpa_dev), + DEFINE_PROP_END_OF_LIST(), +}; + +static const VMStateDescription vmstate_vhost_vdpa_device = { + .name = "vhost-vdpa-device", + .minimum_version_id = 1, + .version_id = 1, + .fields = (VMStateField[]) { + VMSTATE_VIRTIO_DEVICE, + VMSTATE_END_OF_LIST() + }, +}; + +static void vhost_vdpa_device_class_init(ObjectClass *klass, void *data) +{ + DeviceClass *dc = DEVICE_CLASS(klass); + VirtioDeviceClass *vdc = VIRTIO_DEVICE_CLASS(klass); + + device_class_set_props(dc, vhost_vdpa_device_properties); + dc->desc = "VDPA-based generic PCI device assignment"; + dc->vmsd = &vmstate_vhost_vdpa_device; + set_bit(DEVICE_CATEGORY_MISC, dc->categories); + vdc->realize = vhost_vdpa_device_realize; + vdc->unrealize = vhost_vdpa_device_unrealize; + vdc->get_config = vhost_vdpa_device_get_config; + vdc->set_config = vhost_vdpa_device_set_config; + vdc->get_features = vhost_vdpa_device_get_features; + vdc->set_status = vhost_vdpa_device_set_status; +} + +static void vhost_vdpa_device_instance_init(Object *obj) +{ + VhostVdpaDevice *s = VHOST_VDPA_DEVICE(obj); + + device_add_bootindex_property(obj, &s->bootindex, "bootindex", + NULL, DEVICE(obj)); +} + static const TypeInfo vhost_vdpa_device_info = { .name = TYPE_VHOST_VDPA_DEVICE, .parent = TYPE_VIRTIO_DEVICE, diff --git a/include/hw/virtio/vdpa-dev.h b/include/hw/virtio/vdpa-dev.h index dd94bd74a2..7a0e6bdcf8 100644 --- a/include/hw/virtio/vdpa-dev.h +++ b/include/hw/virtio/vdpa-dev.h @@ -11,6 +11,8 @@ OBJECT_DECLARE_SIMPLE_TYPE(VhostVdpaDevice, VHOST_VDPA_DEVICE) struct VhostVdpaDevice { VirtIODevice parent_obj; + char *vdpa_dev; + int32_t bootindex; }; #endif