From patchwork Wed Jun 5 08:30:33 2024 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: "Duan, Zhenzhong" X-Patchwork-Id: 13686404 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 60A5EC25B76 for ; Wed, 5 Jun 2024 08:35:13 +0000 (UTC) Received: from localhost ([::1] helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1sEm5b-0001Hk-7n; Wed, 05 Jun 2024 04:33:47 -0400 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 1sEm5Y-0001H7-UV for qemu-devel@nongnu.org; Wed, 05 Jun 2024 04:33:44 -0400 Received: from mgamail.intel.com ([198.175.65.12]) by eggs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1sEm5X-00062T-5Q for qemu-devel@nongnu.org; Wed, 05 Jun 2024 04:33:44 -0400 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=intel.com; i=@intel.com; q=dns/txt; s=Intel; t=1717576424; x=1749112424; h=from:to:cc:subject:date:message-id:in-reply-to: references:mime-version:content-transfer-encoding; bh=SFnso2XJZnjcpe6vQEbV6q0DMy+GxluEI4QwMoNhpTQ=; b=dkGNQ4ckZfCrXHGNVjJycu9ZbPYLpLpIUTmOvA5zD792dQPc7I2NFlUK oeAaruLFExk6gizGGfp4mXHtqA+or0H3vRQP5Orw8HBvOW38s3GI5T9vt bfj0yTKB3OhTetgsd96qgWX+ZVPyW5Wu7ZATntnc6FKnVB4P29wCzJgrR ivo4irBeB5AsqPDnbec7X15k/zvnwFsz+K/1Fmwhz+Rafod/ORyNa4w8n TGX3l6xKKtBGpnrQfILQS8czf+/EMB4jhv+CtPZfVxd0/o/KAVp8cloOO HtNqmXGuKJfJNnbNid5HbLyrStdepkGGt48WvlyE4oV991M3w3RlB/rs+ w==; X-CSE-ConnectionGUID: WUi+CFSBS4+q6fubhWTUZw== X-CSE-MsgGUID: BoQiv6WOTC+mCENrTCBVBA== X-IronPort-AV: E=McAfee;i="6600,9927,11093"; a="25575349" X-IronPort-AV: E=Sophos;i="6.08,216,1712646000"; d="scan'208";a="25575349" Received: from orviesa006.jf.intel.com ([10.64.159.146]) by orvoesa104.jf.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 05 Jun 2024 01:33:43 -0700 X-CSE-ConnectionGUID: 4q/ReIHDRIqShvUH3I3oKw== X-CSE-MsgGUID: Ap2FusQ/TOuOVvT0q3V6TQ== X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="6.08,216,1712646000"; d="scan'208";a="37954804" Received: from unknown (HELO SPR-S2600BT.bj.intel.com) ([10.240.192.127]) by orviesa006-auth.jf.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 05 Jun 2024 01:33:38 -0700 From: Zhenzhong Duan To: qemu-devel@nongnu.org Cc: alex.williamson@redhat.com, clg@redhat.com, eric.auger@redhat.com, mst@redhat.com, peterx@redhat.com, jasowang@redhat.com, jgg@nvidia.com, nicolinc@nvidia.com, joao.m.martins@oracle.com, clement.mathieu--drif@eviden.com, kevin.tian@intel.com, yi.l.liu@intel.com, chao.p.peng@intel.com, Zhenzhong Duan , Yi Sun Subject: [PATCH v7 07/17] backends/iommufd: Introduce helper function iommufd_backend_get_device_info() Date: Wed, 5 Jun 2024 16:30:33 +0800 Message-Id: <20240605083043.317831-8-zhenzhong.duan@intel.com> X-Mailer: git-send-email 2.34.1 In-Reply-To: <20240605083043.317831-1-zhenzhong.duan@intel.com> References: <20240605083043.317831-1-zhenzhong.duan@intel.com> MIME-Version: 1.0 Received-SPF: pass client-ip=198.175.65.12; envelope-from=zhenzhong.duan@intel.com; helo=mgamail.intel.com X-Spam_score_int: -43 X-Spam_score: -4.4 X-Spam_bar: ---- X-Spam_report: (-4.4 / 5.0 requ) BAYES_00=-1.9, DKIMWL_WL_HIGH=-0.001, 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_backend_get_device_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 | 3 +++ backends/iommufd.c | 22 ++++++++++++++++++++++ 2 files changed, 25 insertions(+) diff --git a/include/sysemu/iommufd.h b/include/sysemu/iommufd.h index f6e6d6e1f9..9edfec6045 100644 --- a/include/sysemu/iommufd.h +++ b/include/sysemu/iommufd.h @@ -47,6 +47,9 @@ int iommufd_backend_map_dma(IOMMUFDBackend *be, uint32_t ioas_id, hwaddr iova, ram_addr_t size, void *vaddr, bool readonly); int iommufd_backend_unmap_dma(IOMMUFDBackend *be, uint32_t ioas_id, hwaddr iova, ram_addr_t size); +bool iommufd_backend_get_device_info(IOMMUFDBackend *be, uint32_t devid, + uint32_t *type, void *data, uint32_t len, + Error **errp); #define TYPE_HOST_IOMMU_DEVICE_IOMMUFD TYPE_HOST_IOMMU_DEVICE "-iommufd" #endif diff --git a/backends/iommufd.c b/backends/iommufd.c index 012f18d8d8..c7e969d6f7 100644 --- a/backends/iommufd.c +++ b/backends/iommufd.c @@ -208,6 +208,28 @@ int iommufd_backend_unmap_dma(IOMMUFDBackend *be, uint32_t ioas_id, return ret; } +bool iommufd_backend_get_device_info(IOMMUFDBackend *be, uint32_t devid, + uint32_t *type, void *data, uint32_t len, + Error **errp) +{ + struct iommu_hw_info info = { + .size = sizeof(info), + .dev_id = devid, + .data_len = len, + .data_uptr = (uintptr_t)data, + }; + + if (ioctl(be->fd, IOMMU_GET_HW_INFO, &info)) { + error_setg_errno(errp, errno, "Failed to get hardware info"); + return false; + } + + g_assert(type); + *type = info.out_data_type; + + return true; +} + static const TypeInfo types[] = { { .name = TYPE_IOMMUFD_BACKEND,