From mboxrd@z Thu Jan 1 00:00:00 1970 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 vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id 70938C433EF for ; Thu, 14 Apr 2022 10:47:40 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S242501AbiDNKuC (ORCPT ); Thu, 14 Apr 2022 06:50:02 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:53232 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S242489AbiDNKt4 (ORCPT ); Thu, 14 Apr 2022 06:49:56 -0400 Received: from mga07.intel.com (mga07.intel.com [134.134.136.100]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 277E48119F for ; Thu, 14 Apr 2022 03:47:24 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=intel.com; i=@intel.com; q=dns/txt; s=Intel; t=1649933245; x=1681469245; h=from:to:cc:subject:date:message-id:in-reply-to: references:mime-version:content-transfer-encoding; bh=0YDGzdA0v7DGQjpQ43n6QGUsR6hhCiY+JzhRyO8LL5g=; b=h7wWReNVUJEyvBe74yXuPbpDS5RS3vYwhntK4bnapy0rxvzQadMi/4tX tHukBsnOZwN8RYScAbGVj709LDNh0mJqAdIHv9n1RDng4ISzqvhPcf8q4 rUC7qMjOF5tGDK52MLnZiS3IFP6HRT8qOZSotN0QDKWEmDi73r4/ezqQL uvVOZ+0kDymrCOlbWL8ETHQmC47jnZ2AtU1XSJ70E9UupXJDV5FXBQ5bv T+ivLSnexkbDdIdxSQKUpd9fUo0pkQ2as2EmOl76EY18Q7KFXnmOYYNki KpcZthiH2x/7p6gq4YDiBDhI5o87QHt7IPYt6SqIu8KX2lRFKkCHGRYEJ A==; X-IronPort-AV: E=McAfee;i="6400,9594,10316"; a="325808693" X-IronPort-AV: E=Sophos;i="5.90,259,1643702400"; d="scan'208";a="325808693" Received: from fmsmga006.fm.intel.com ([10.253.24.20]) by orsmga105.jf.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 Cc: david@gibson.dropbear.id.au, thuth@redhat.com, farman@linux.ibm.com, mjrosato@linux.ibm.com, akrowiak@linux.ibm.com, pasic@linux.ibm.com, jjherne@linux.ibm.com, jasowang@redhat.com, kvm@vger.kernel.org, jgg@nvidia.com, nicolinc@nvidia.com, eric.auger@redhat.com, eric.auger.pro@gmail.com, kevin.tian@intel.com, yi.l.liu@intel.com, chao.p.peng@intel.com, yi.y.sun@intel.com, peterx@redhat.com 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 Content-Transfer-Encoding: 8bit Precedence: bulk List-ID: X-Mailing-List: kvm@vger.kernel.org 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, -- 2.27.0