From patchwork Thu Apr 14 10:47:04 2022 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Yi Liu X-Patchwork-Id: 12813344 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 5231EC433FE for ; Thu, 14 Apr 2022 10:53:04 +0000 (UTC) Received: from localhost ([::1]:59104 helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1nex5z-0004AA-Cy for qemu-devel@archiver.kernel.org; Thu, 14 Apr 2022 06:53:03 -0400 Received: from eggs.gnu.org ([2001:470:142:3::10]:55574) by lists.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1nex0p-0002Xx-JF for qemu-devel@nongnu.org; Thu, 14 Apr 2022 06:47:43 -0400 Received: from mga12.intel.com ([192.55.52.136]:34768) by eggs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1nex0k-0005Ka-Jp for qemu-devel@nongnu.org; Thu, 14 Apr 2022 06:47:41 -0400 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=intel.com; i=@intel.com; q=dns/txt; s=Intel; t=1649933258; x=1681469258; h=from:to:cc:subject:date:message-id:in-reply-to: references:mime-version:content-transfer-encoding; bh=0YDGzdA0v7DGQjpQ43n6QGUsR6hhCiY+JzhRyO8LL5g=; b=ikrRcRcUZ5Pi1VowrbCc3rgph/TJrYd9Rce2gKVfinFfITVnstckLA0A QcpW1nljIiJguFdqG4JfJflpVI5q4o1BpKNgIZo45lYE1AgrKI4JdKmMy /yRdGGTxJlpXIuj6BEc/h5SuAlXZRIlN1tto+90NDJGXmVZES9mXdHRDe h3R06e9ubysByCFjjSQBFAXn/GNRvHuskMZInY6dfIugND1DWslKtQZJx pWZ8WErV3xyDSoWZFzfrV2OPdUJ9z721FQrzeEPJSFo0koPbg1jnZkvIw ZwEZXDthRSLzBYT8eoEHvlXtaCP+VQ4nzEyLcgPmB/3fGjw7J3Rk6Rk8J A==; X-IronPort-AV: E=McAfee;i="6400,9594,10316"; a="242836508" X-IronPort-AV: E=Sophos;i="5.90,259,1643702400"; d="scan'208";a="242836508" Received: from fmsmga006.fm.intel.com ([10.253.24.20]) by fmsmga106.fm.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 14 Apr 2022 03:47:21 -0700 X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="5.90,259,1643702400"; d="scan'208";a="803091238" Received: from 984fee00a4c6.jf.intel.com ([10.165.58.231]) by fmsmga006.fm.intel.com with ESMTP; 14 Apr 2022 03:47:19 -0700 From: Yi Liu To: alex.williamson@redhat.com, cohuck@redhat.com, qemu-devel@nongnu.org Subject: [RFC 12/18] vfio/container-obj: Introduce [attach/detach]_device container callbacks Date: Thu, 14 Apr 2022 03:47:04 -0700 Message-Id: <20220414104710.28534-13-yi.l.liu@intel.com> X-Mailer: git-send-email 2.27.0 In-Reply-To: <20220414104710.28534-1-yi.l.liu@intel.com> References: <20220414104710.28534-1-yi.l.liu@intel.com> MIME-Version: 1.0 Received-SPF: pass client-ip=192.55.52.136; envelope-from=yi.l.liu@intel.com; helo=mga12.intel.com X-Spam_score_int: -44 X-Spam_score: -4.5 X-Spam_bar: ---- X-Spam_report: (-4.5 / 5.0 requ) BAYES_00=-1.9, DKIMWL_WL_HIGH=-0.082, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_AU=-0.1, DKIM_VALID_EF=-0.1, RCVD_IN_DNSWL_MED=-2.3, SPF_HELO_PASS=-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: , Cc: akrowiak@linux.ibm.com, jjherne@linux.ibm.com, thuth@redhat.com, yi.l.liu@intel.com, kvm@vger.kernel.org, mjrosato@linux.ibm.com, jasowang@redhat.com, farman@linux.ibm.com, peterx@redhat.com, pasic@linux.ibm.com, eric.auger@redhat.com, yi.y.sun@intel.com, chao.p.peng@intel.com, nicolinc@nvidia.com, kevin.tian@intel.com, jgg@nvidia.com, eric.auger.pro@gmail.com, david@gibson.dropbear.id.au Errors-To: qemu-devel-bounces+qemu-devel=archiver.kernel.org@nongnu.org Sender: "Qemu-devel" From: Eric Auger Let's turn attach/detach_device as container callbacks. That way, their implementation can be easily customized for a given backend. For the time being, only the legacy container is supported. Signed-off-by: Eric Auger Signed-off-by: Yi Liu --- hw/vfio/as.c | 36 ++++++++++++++++++++++++++++ hw/vfio/container.c | 11 +++++---- hw/vfio/pci.c | 2 +- include/hw/vfio/vfio-common.h | 7 ++++++ include/hw/vfio/vfio-container-obj.h | 6 +++++ 5 files changed, 57 insertions(+), 5 deletions(-) diff --git a/hw/vfio/as.c b/hw/vfio/as.c index 37423d2c89..30e86f6833 100644 --- a/hw/vfio/as.c +++ b/hw/vfio/as.c @@ -874,3 +874,39 @@ void vfio_put_address_space(VFIOAddressSpace *space) g_free(space); } } + +static VFIOContainerClass * +vfio_get_container_class(VFIOIOMMUBackendType be) +{ + ObjectClass *klass; + + switch (be) { + case VFIO_IOMMU_BACKEND_TYPE_LEGACY: + klass = object_class_by_name(TYPE_VFIO_LEGACY_CONTAINER); + return VFIO_CONTAINER_OBJ_CLASS(klass); + default: + return NULL; + } +} + +int vfio_attach_device(VFIODevice *vbasedev, AddressSpace *as, Error **errp) +{ + VFIOContainerClass *vccs; + + vccs = vfio_get_container_class(VFIO_IOMMU_BACKEND_TYPE_LEGACY); + if (!vccs) { + return -ENOENT; + } + return vccs->attach_device(vbasedev, as, errp); +} + +void vfio_detach_device(VFIODevice *vbasedev) +{ + VFIOContainerClass *vccs; + + if (!vbasedev->container) { + return; + } + vccs = VFIO_CONTAINER_OBJ_GET_CLASS(vbasedev->container); + vccs->detach_device(vbasedev); +} diff --git a/hw/vfio/container.c b/hw/vfio/container.c index 5d73f8285e..74febc1567 100644 --- a/hw/vfio/container.c +++ b/hw/vfio/container.c @@ -50,8 +50,6 @@ static int vfio_kvm_device_fd = -1; #endif -#define TYPE_VFIO_LEGACY_CONTAINER "qemu:vfio-legacy-container" - VFIOGroupList vfio_group_list = QLIST_HEAD_INITIALIZER(vfio_group_list); @@ -1240,7 +1238,8 @@ static int vfio_device_groupid(VFIODevice *vbasedev, Error **errp) return groupid; } -int vfio_attach_device(VFIODevice *vbasedev, AddressSpace *as, Error **errp) +static int +legacy_attach_device(VFIODevice *vbasedev, AddressSpace *as, Error **errp) { int groupid = vfio_device_groupid(vbasedev, errp); VFIODevice *vbasedev_iter; @@ -1269,14 +1268,16 @@ int vfio_attach_device(VFIODevice *vbasedev, AddressSpace *as, Error **errp) vfio_put_group(group); return -1; } + vbasedev->container = &group->container->obj; return 0; } -void vfio_detach_device(VFIODevice *vbasedev) +static void legacy_detach_device(VFIODevice *vbasedev) { vfio_put_base_device(vbasedev); vfio_put_group(vbasedev->group); + vbasedev->container = NULL; } static void vfio_legacy_container_class_init(ObjectClass *klass, @@ -1292,6 +1293,8 @@ static void vfio_legacy_container_class_init(ObjectClass *klass, vccs->add_window = vfio_legacy_container_add_section_window; vccs->del_window = vfio_legacy_container_del_section_window; vccs->check_extension = vfio_legacy_container_check_extension; + vccs->attach_device = legacy_attach_device; + vccs->detach_device = legacy_detach_device; } static const TypeInfo vfio_legacy_container_info = { diff --git a/hw/vfio/pci.c b/hw/vfio/pci.c index 0363f81017..e1ab6d339d 100644 --- a/hw/vfio/pci.c +++ b/hw/vfio/pci.c @@ -3063,7 +3063,7 @@ static void vfio_realize(PCIDevice *pdev, Error **errp) } if (!pdev->failover_pair_id && - vfio_container_check_extension(&vbasedev->group->container->obj, + vfio_container_check_extension(vbasedev->container, VFIO_FEAT_LIVE_MIGRATION)) { ret = vfio_migration_probe(vbasedev, errp); if (ret) { diff --git a/include/hw/vfio/vfio-common.h b/include/hw/vfio/vfio-common.h index 7d7898717e..2040c27cda 100644 --- a/include/hw/vfio/vfio-common.h +++ b/include/hw/vfio/vfio-common.h @@ -83,9 +83,15 @@ typedef struct VFIOLegacyContainer { typedef struct VFIODeviceOps VFIODeviceOps; +typedef enum VFIOIOMMUBackendType { + VFIO_IOMMU_BACKEND_TYPE_LEGACY = 0, + VFIO_IOMMU_BACKEND_TYPE_IOMMUFD = 1, +} VFIOIOMMUBackendType; + typedef struct VFIODevice { QLIST_ENTRY(VFIODevice) next; struct VFIOGroup *group; + VFIOContainer *container; char *sysfsdev; char *name; DeviceState *dev; @@ -97,6 +103,7 @@ typedef struct VFIODevice { bool ram_block_discard_allowed; bool enable_migration; VFIODeviceOps *ops; + VFIOIOMMUBackendType be; unsigned int num_irqs; unsigned int num_regions; unsigned int flags; diff --git a/include/hw/vfio/vfio-container-obj.h b/include/hw/vfio/vfio-container-obj.h index 7ffbbb299f..ebc1340530 100644 --- a/include/hw/vfio/vfio-container-obj.h +++ b/include/hw/vfio/vfio-container-obj.h @@ -42,6 +42,8 @@ OBJECT_GET_CLASS(VFIOContainerClass, (obj), \ TYPE_VFIO_CONTAINER_OBJ) +#define TYPE_VFIO_LEGACY_CONTAINER "qemu:vfio-legacy-container" + typedef enum VFIOContainerFeature { VFIO_FEAT_LIVE_MIGRATION, } VFIOContainerFeature; @@ -101,6 +103,8 @@ struct VFIOContainer { QLIST_ENTRY(VFIOContainer) next; }; +typedef struct VFIODevice VFIODevice; + typedef struct VFIOContainerClass { /* private */ ObjectClass parent_class; @@ -126,6 +130,8 @@ typedef struct VFIOContainerClass { Error **errp); void (*del_window)(VFIOContainer *container, MemoryRegionSection *section); + int (*attach_device)(VFIODevice *vbasedev, AddressSpace *as, Error **errp); + void (*detach_device)(VFIODevice *vbasedev); } VFIOContainerClass; bool vfio_container_check_extension(VFIOContainer *container,