From patchwork Sat May 14 04:11:03 2022 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: "Denis V. Lunev\" via" X-Patchwork-Id: 12849711 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 8AC4EC433F5 for ; Sat, 14 May 2022 04:17:05 +0000 (UTC) Received: from localhost ([::1]:52298 helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1npjDC-00072e-Mn for qemu-devel@archiver.kernel.org; Sat, 14 May 2022 00:17:02 -0400 Received: from eggs.gnu.org ([2001:470:142:3::10]:39118) by lists.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1npj7g-0000Fk-OE for qemu-devel@nongnu.org; Sat, 14 May 2022 00:11:20 -0400 Received: from szxga01-in.huawei.com ([45.249.212.187]:3941) by eggs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1npj7a-0002bl-R1 for qemu-devel@nongnu.org; Sat, 14 May 2022 00:11:20 -0400 Received: from kwepemi500025.china.huawei.com (unknown [172.30.72.53]) by szxga01-in.huawei.com (SkyGuard) with ESMTP id 4L0X9r2SKYzgYxP; Sat, 14 May 2022 12:10:40 +0800 (CST) Received: from DESKTOP-27KDQMV.china.huawei.com (10.174.148.223) by kwepemi500025.china.huawei.com (7.221.188.170) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_128_GCM_SHA256) id 15.1.2375.24; Sat, 14 May 2022 12:11:10 +0800 To: , , , CC: , , , , , , Subject: [PATCH v6 resend 0/4] add generic vDPA device support Date: Sat, 14 May 2022 12:11:03 +0800 Message-ID: <20220514041107.1980-1-longpeng2@huawei.com> X-Mailer: git-send-email 2.25.0.windows.1 MIME-Version: 1.0 X-Originating-IP: [10.174.148.223] X-ClientProxiedBy: dggems702-chm.china.huawei.com (10.3.19.179) To kwepemi500025.china.huawei.com (7.221.188.170) X-CFilter-Loop: Reflected Received-SPF: pass client-ip=45.249.212.187; envelope-from=longpeng2@huawei.com; helo=szxga01-in.huawei.com X-Spam_score_int: -41 X-Spam_score: -4.2 X-Spam_bar: ---- X-Spam_report: (-4.2 / 5.0 requ) BAYES_00=-1.9, RCVD_IN_DNSWL_MED=-2.3, 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+qemu-devel=archiver.kernel.org@nongnu.org Sender: "Qemu-devel" Reply-to: "Longpeng(Mike)" X-Patchwork-Original-From: "Longpeng(Mike)" via From: "Denis V. Lunev\" via" From: Longpeng Hi guys, With the generic vDPA device, QEMU won't need to touch the device types any more, such like vfio. We can use the generic vDPA device as follow: -device vhost-vdpa-device-pci,vhostdev=/dev/vhost-vdpa-X Or -M microvm -m 512m -smp 2 -kernel ... -initrd ... -device \ vhost-vdpa-device,vhostdev=/dev/vhost-vdpa-x I've done some simple tests on Huawei's offloading card (net, 0.95). Changes v5 -> v6: Patch 2: - Turn to the original approach in the RFC to initialize the virtio_pci_id_info array. [Michael] https://lore.kernel.org/all/20220105005900.860-2-longpeng2@huawei.com/ Patch 3: - Fix logical error of exception handler around the post_init. [Stefano] - Fix some coding style warnings. [Stefano] Patch 4: - Fix some coding style warnings. [Stefano] Changes v4 -> v5: Patch 3: - remove vhostfd [Jason] - support virtio-mmio [Jason] Changes v3 -> v4: v3: https://www.mail-archive.com/qemu-devel@nongnu.org/msg877015.html - reorganize the series [Stefano] - fix some typos [Stefano] - fix logical error in vhost_vdpa_device_realize [Stefano] Changes v2 -> v3 Patch 4 & 5: - only call vdpa ioctls in vdpa-dev.c [Stefano, Longpeng] - s/VQS_NUM/VQS_COUNT [Stefano] - check both vdpa_dev_fd and vdpa_dev [Stefano] Patch 6: - move all steps into vhost_vdpa_device_unrealize. [Stefano] Changes RFC -> v2 Patch 1: - rename 'pdev_id' to 'trans_devid' [Michael] - only use transitional device id for the devices listed in the spec [Michael] - use macros to make the id_info table clearer [Longpeng] - add some modern devices in the id_info table [Longpeng] Patch 2: - remove the GET_VECTORS_NUM command [Jason] Patch 4: - expose vdpa_dev_fd as a QOM preperty [Stefan] - introduce vhost_vdpa_device_get_u32 as a common function to make the code clearer [Stefan] - fix the misleading description of 'dc->desc' [Stefano] Patch 5: - check returned number of virtqueues [Stefan] Patch 6: - init s->num_queues [Stefano] - free s->dev.vqs [Stefano] Longpeng (Mike) (4): linux-headers: Update headers to Linux 5.18-rc6 virtio: get class_id and pci device id by the virtio id vdpa: add vdpa-dev support vdpa: add vdpa-dev-pci support hw/virtio/Kconfig | 5 + hw/virtio/meson.build | 2 + hw/virtio/vdpa-dev-pci.c | 102 ++++++++++ hw/virtio/vdpa-dev.c | 377 +++++++++++++++++++++++++++++++++++ hw/virtio/virtio-pci.c | 88 ++++++++ hw/virtio/virtio-pci.h | 5 + include/hw/virtio/vdpa-dev.h | 43 ++++ linux-headers/linux/vhost.h | 7 + 8 files changed, 629 insertions(+) create mode 100644 hw/virtio/vdpa-dev-pci.c create mode 100644 hw/virtio/vdpa-dev.c create mode 100644 include/hw/virtio/vdpa-dev.h Acked-by: Jason Wang