From patchwork Thu Feb 1 07:28:15 2024 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: "Duan, Zhenzhong" X-Patchwork-Id: 13540732 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 7670FC47DDB for ; Thu, 1 Feb 2024 07:32:15 +0000 (UTC) Received: from localhost ([::1] helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1rVRYE-00075p-Ro; Thu, 01 Feb 2024 02:31:58 -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 1rVRY4-0006kL-Qq for qemu-devel@nongnu.org; Thu, 01 Feb 2024 02:31:50 -0500 Received: from mgamail.intel.com ([192.55.52.120]) by eggs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1rVRXr-0001hD-Ob for qemu-devel@nongnu.org; Thu, 01 Feb 2024 02:31:37 -0500 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=intel.com; i=@intel.com; q=dns/txt; s=Intel; t=1706772695; x=1738308695; h=from:to:cc:subject:date:message-id:in-reply-to: references:mime-version:content-transfer-encoding; bh=4UuNU52+wzlDsbtsKgRQzd/clhv4zIKmdvD3x0j7SeU=; b=kB4Z1eRUBjkQFRWxhO0LUzRLJ5dWICyd+d325pT6Q20nAIGLKOgYvdSG G/NXXOeoiSB7fx5VI84jchp69LtKahcY8n9XzhJb7hSDHcCKKwQ6yRpvw WczHERK7Lma11lP2xNps6aSDmgVDMe67PcvEJ5f0eiFRHBkjCAxQLSlqc mEdq+B2ebH4XRP6bu9dDzJKcMLwLzjQYFdOXeB8ym5CfSJ3Tv4Zvo5cYO kXWarlxntbM6sAVVeYaWqZZah58Jf0OBBii30W8Fa0BEwW20coZgA9HWV LxSuKz0xmeNavcX6PyHgBV2t6XgUxlbdtfsu6O63Vw/lO8lEdItqS+pTP Q==; X-IronPort-AV: E=McAfee;i="6600,9927,10969"; a="402676925" X-IronPort-AV: E=Sophos;i="6.05,234,1701158400"; d="scan'208";a="402676925" Received: from orviesa004.jf.intel.com ([10.64.159.144]) by fmsmga104.fm.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 31 Jan 2024 23:31:34 -0800 X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="6.05,234,1701158400"; d="scan'208";a="4443378" Received: from spr-s2600bt.bj.intel.com ([10.240.192.124]) by orviesa004-auth.jf.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 31 Jan 2024 23:31:29 -0800 From: Zhenzhong Duan To: qemu-devel@nongnu.org Cc: alex.williamson@redhat.com, clg@redhat.com, eric.auger@redhat.com, peterx@redhat.com, jasowang@redhat.com, mst@redhat.com, jgg@nvidia.com, nicolinc@nvidia.com, joao.m.martins@oracle.com, kevin.tian@intel.com, yi.l.liu@intel.com, yi.y.sun@intel.com, chao.p.peng@intel.com, Zhenzhong Duan , Yi Sun Subject: [PATCH rfcv2 15/18] backends/iommufd: Introduce helper function iommufd_device_get_info() Date: Thu, 1 Feb 2024 15:28:15 +0800 Message-Id: <20240201072818.327930-16-zhenzhong.duan@intel.com> X-Mailer: git-send-email 2.34.1 In-Reply-To: <20240201072818.327930-1-zhenzhong.duan@intel.com> References: <20240201072818.327930-1-zhenzhong.duan@intel.com> MIME-Version: 1.0 Received-SPF: pass client-ip=192.55.52.120; envelope-from=zhenzhong.duan@intel.com; helo=mgamail.intel.com X-Spam_score_int: -56 X-Spam_score: -5.7 X-Spam_bar: ----- X-Spam_report: (-5.7 / 5.0 requ) BAYES_00=-1.9, DKIMWL_WL_HIGH=-1.292, 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_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-bounces+qemu-devel=archiver.kernel.org@nongnu.org Introduce a helper function iommufd_device_get_info() to get host IOMMU related information through iommufd uAPI. Signed-off-by: Yi Liu Signed-off-by: Yi Sun Signed-off-by: Zhenzhong Duan --- include/sysemu/iommufd.h | 4 ++++ backends/iommufd.c | 25 ++++++++++++++++++++++++- 2 files changed, 28 insertions(+), 1 deletion(-) diff --git a/include/sysemu/iommufd.h b/include/sysemu/iommufd.h index c3f3469760..ec8b80d8d9 100644 --- a/include/sysemu/iommufd.h +++ b/include/sysemu/iommufd.h @@ -4,6 +4,7 @@ #include "qom/object.h" #include "exec/hwaddr.h" #include "exec/cpu-common.h" +#include #include "sysemu/host_iommu_device.h" #define TYPE_IOMMUFD_BACKEND "iommufd" @@ -47,4 +48,7 @@ typedef struct IOMMUFDDevice { } IOMMUFDDevice; void iommufd_device_init(IOMMUFDDevice *idev); +int iommufd_device_get_info(IOMMUFDDevice *idev, + enum iommu_hw_info_type *type, + uint32_t len, void *data, Error **errp); #endif diff --git a/backends/iommufd.c b/backends/iommufd.c index d92791bba9..1b0b991747 100644 --- a/backends/iommufd.c +++ b/backends/iommufd.c @@ -20,7 +20,6 @@ #include "monitor/monitor.h" #include "trace.h" #include -#include static void iommufd_backend_init(Object *obj) { @@ -237,3 +236,27 @@ void iommufd_device_init(IOMMUFDDevice *idev) host_iommu_base_device_init(&idev->base, HID_IOMMUFD, sizeof(IOMMUFDDevice)); } + +int iommufd_device_get_info(IOMMUFDDevice *idev, + enum iommu_hw_info_type *type, + uint32_t len, void *data, Error **errp) +{ + struct iommu_hw_info info = { + .size = sizeof(info), + .flags = 0, + .dev_id = idev->devid, + .data_len = len, + .__reserved = 0, + .data_uptr = (uintptr_t)data, + }; + int ret; + + ret = ioctl(idev->iommufd->fd, IOMMU_GET_HW_INFO, &info); + if (ret) { + error_setg_errno(errp, errno, "Failed to get hardware info"); + } else { + *type = info.out_data_type; + } + + return ret; +}