From nobody Wed Nov 27 00:37:31 2024 Delivered-To: importer@patchew.org Authentication-Results: mx.zohomail.com; spf=pass (zohomail.com: domain of gnu.org designates 209.51.188.17 as permitted sender) smtp.mailfrom=qemu-devel-bounces+importer=patchew.org@nongnu.org; dmarc=fail(p=none dis=none) header.from=redhat.com Return-Path: Received: from lists.gnu.org (lists.gnu.org [209.51.188.17]) by mx.zohomail.com with SMTPS id 1702969241253140.43783263853015; Mon, 18 Dec 2023 23:00:41 -0800 (PST) Received: from localhost ([::1] helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1rFU47-0008Ir-KG; Tue, 19 Dec 2023 01:58:55 -0500 Received: from eggs.gnu.org ([2001:470:142:3::10]) by lists.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1rFU46-0008Ii-Dc for qemu-devel@nongnu.org; Tue, 19 Dec 2023 01:58:54 -0500 Received: from gandalf.ozlabs.org ([150.107.74.76]) by eggs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1rFU44-0001Xw-FO for qemu-devel@nongnu.org; Tue, 19 Dec 2023 01:58:54 -0500 Received: from gandalf.ozlabs.org (mail.ozlabs.org [IPv6:2404:9400:2221:ea00::3]) by gandalf.ozlabs.org (Postfix) with ESMTP id 4SvSGL2hHYz4xCm; Tue, 19 Dec 2023 17:58:50 +1100 (AEDT) Received: from authenticated.ozlabs.org (localhost [127.0.0.1]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange X25519 server-signature RSA-PSS (4096 bits) server-digest SHA256) (No client certificate requested) by mail.ozlabs.org (Postfix) with ESMTPSA id 4SvSGH5TVwz4x5q; Tue, 19 Dec 2023 17:58:47 +1100 (AEDT) From: =?UTF-8?q?C=C3=A9dric=20Le=20Goater?= To: qemu-devel@nongnu.org Cc: Zhenzhong Duan , Eric Auger , Alex Williamson , Nicholas Piggin , Harsh Prateek Bora , =?UTF-8?q?C=C3=A9dric=20Le=20Goater?= Subject: [PATCH for-9.0 v2 05/10] vfio/container: Introduce a VFIOIOMMU legacy QOM interface Date: Tue, 19 Dec 2023 07:58:20 +0100 Message-ID: <20231219065825.613767-6-clg@redhat.com> X-Mailer: git-send-email 2.43.0 In-Reply-To: <20231219065825.613767-1-clg@redhat.com> References: <20231219065825.613767-1-clg@redhat.com> MIME-Version: 1.0 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: quoted-printable 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=150.107.74.76; envelope-from=SRS0=7/MV=H6=redhat.com=clg@ozlabs.org; helo=gandalf.ozlabs.org X-Spam_score_int: -16 X-Spam_score: -1.7 X-Spam_bar: - X-Spam_report: (-1.7 / 5.0 requ) BAYES_00=-1.9, HEADER_FROM_DIFFERENT_DOMAINS=0.25, SPF_HELO_PASS=-0.001, SPF_PASS=-0.001, T_SCC_BODY_TEXT_LINE=-0.01 autolearn=no 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-ZM-MESSAGEID: 1702969241849100002 Convert the legacy VFIOIOMMUOps struct to the new VFIOIOMMU QOM interface. The set of of operations for this backend can be referenced with a literal typename instead of a C struct. This will simplify support of multiple backends. Reviewed-by: Zhenzhong Duan Signed-off-by: C=C3=A9dric Le Goater --- v2: - Removed class_size initialization - Removed NULL initialization of vioc =20 include/hw/vfio/vfio-common.h | 1 - include/hw/vfio/vfio-container-base.h | 1 + hw/vfio/common.c | 6 ++- hw/vfio/container.c | 58 ++++++++++++++++++++++----- 4 files changed, 55 insertions(+), 11 deletions(-) diff --git a/include/hw/vfio/vfio-common.h b/include/hw/vfio/vfio-common.h index b8aa8a549532442a31c8e85ce385c992d84f6bd5..14c497b6b0a79466e8f567aceed= 384ec2c75ea90 100644 --- a/include/hw/vfio/vfio-common.h +++ b/include/hw/vfio/vfio-common.h @@ -210,7 +210,6 @@ typedef QLIST_HEAD(VFIOGroupList, VFIOGroup) VFIOGroupL= ist; typedef QLIST_HEAD(VFIODeviceList, VFIODevice) VFIODeviceList; extern VFIOGroupList vfio_group_list; extern VFIODeviceList vfio_device_list; -extern const VFIOIOMMUOps vfio_legacy_ops; extern const VFIOIOMMUOps vfio_iommufd_ops; extern const MemoryListener vfio_memory_listener; extern int vfio_kvm_device_fd; diff --git a/include/hw/vfio/vfio-container-base.h b/include/hw/vfio/vfio-c= ontainer-base.h index d6147b4aeef26b6075c88579108e566720f58ebb..c60370fc5ebe65474816dbf2b06= 5aa0912de1a3c 100644 --- a/include/hw/vfio/vfio-container-base.h +++ b/include/hw/vfio/vfio-container-base.h @@ -94,6 +94,7 @@ void vfio_container_destroy(VFIOContainerBase *bcontainer= ); =20 =20 #define TYPE_VFIO_IOMMU "vfio-iommu" +#define TYPE_VFIO_IOMMU_LEGACY TYPE_VFIO_IOMMU "-legacy" =20 /* * VFIOContainerBase is not an abstract QOM object because it felt diff --git a/hw/vfio/common.c b/hw/vfio/common.c index 49dab41566f07ba7be1100fed1973e028d34467c..2329d0efc8c1d617f0bfee5283e= 82b295d2d477d 100644 --- a/hw/vfio/common.c +++ b/hw/vfio/common.c @@ -1503,13 +1503,17 @@ retry: int vfio_attach_device(char *name, VFIODevice *vbasedev, AddressSpace *as, Error **errp) { - const VFIOIOMMUClass *ops =3D &vfio_legacy_ops; + const VFIOIOMMUClass *ops =3D + VFIO_IOMMU_CLASS(object_class_by_name(TYPE_VFIO_IOMMU_LEGACY)); =20 #ifdef CONFIG_IOMMUFD if (vbasedev->iommufd) { ops =3D &vfio_iommufd_ops; } #endif + + assert(ops); + return ops->attach_device(name, vbasedev, as, errp); } =20 diff --git a/hw/vfio/container.c b/hw/vfio/container.c index f4a0434a5239bfb6a17b91c8879cb98e686afccc..220e838a917f9a135af1e040a45= 0cb52064428cf 100644 --- a/hw/vfio/container.c +++ b/hw/vfio/container.c @@ -369,10 +369,30 @@ static int vfio_get_iommu_type(VFIOContainer *contain= er, return -EINVAL; } =20 +/* + * vfio_get_iommu_ops - get a VFIOIOMMUClass associated with a type + */ +static const VFIOIOMMUClass *vfio_get_iommu_class(int iommu_type, Error **= errp) +{ + ObjectClass *klass =3D NULL; + + switch (iommu_type) { + case VFIO_TYPE1v2_IOMMU: + case VFIO_TYPE1_IOMMU: + klass =3D object_class_by_name(TYPE_VFIO_IOMMU_LEGACY); + break; + default: + g_assert_not_reached(); + }; + + return VFIO_IOMMU_CLASS(klass); +} + static int vfio_init_container(VFIOContainer *container, int group_fd, VFIOAddressSpace *space, Error **errp) { int iommu_type, ret; + const VFIOIOMMUClass *vioc; =20 iommu_type =3D vfio_get_iommu_type(container, errp); if (iommu_type < 0) { @@ -401,7 +421,14 @@ static int vfio_init_container(VFIOContainer *containe= r, int group_fd, } =20 container->iommu_type =3D iommu_type; - vfio_container_init(&container->bcontainer, space, &vfio_legacy_ops); + + vioc =3D vfio_get_iommu_class(iommu_type, errp); + if (!vioc) { + error_setg(errp, "No available IOMMU models"); + return -EINVAL; + } + + vfio_container_init(&container->bcontainer, space, vioc); return 0; } =20 @@ -1098,12 +1125,25 @@ out_single: return ret; } =20 -const VFIOIOMMUOps vfio_legacy_ops =3D { - .dma_map =3D vfio_legacy_dma_map, - .dma_unmap =3D vfio_legacy_dma_unmap, - .attach_device =3D vfio_legacy_attach_device, - .detach_device =3D vfio_legacy_detach_device, - .set_dirty_page_tracking =3D vfio_legacy_set_dirty_page_tracking, - .query_dirty_bitmap =3D vfio_legacy_query_dirty_bitmap, - .pci_hot_reset =3D vfio_legacy_pci_hot_reset, +static void vfio_iommu_legacy_class_init(ObjectClass *klass, void *data) +{ + VFIOIOMMUClass *vioc =3D VFIO_IOMMU_CLASS(klass); + + vioc->dma_map =3D vfio_legacy_dma_map; + vioc->dma_unmap =3D vfio_legacy_dma_unmap; + vioc->attach_device =3D vfio_legacy_attach_device; + vioc->detach_device =3D vfio_legacy_detach_device; + vioc->set_dirty_page_tracking =3D vfio_legacy_set_dirty_page_tracking; + vioc->query_dirty_bitmap =3D vfio_legacy_query_dirty_bitmap; + vioc->pci_hot_reset =3D vfio_legacy_pci_hot_reset; }; + +static const TypeInfo types[] =3D { + { + .name =3D TYPE_VFIO_IOMMU_LEGACY, + .parent =3D TYPE_VFIO_IOMMU, + .class_init =3D vfio_iommu_legacy_class_init, + }, +}; + +DEFINE_TYPES(types) --=20 2.43.0