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 X-Spam-Level: X-Spam-Status: No, score=-6.9 required=3.0 tests=DKIMWL_WL_HIGH,DKIM_SIGNED, DKIM_VALID,DKIM_VALID_AU,HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_PATCH, MAILING_LIST_MULTI,SIGNED_OFF_BY,SPF_HELO_NONE,SPF_PASS autolearn=ham autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id A8CE2C433E0 for ; Wed, 17 Jun 2020 03:30:41 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 7D1A420663 for ; Wed, 17 Jun 2020 03:30:41 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (1024-bit key) header.d=redhat.com header.i=@redhat.com header.b="gGUzj02p" Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1726735AbgFQDaL (ORCPT ); Tue, 16 Jun 2020 23:30:11 -0400 Received: from us-smtp-2.mimecast.com ([207.211.31.81]:38660 "EHLO us-smtp-delivery-1.mimecast.com" rhost-flags-OK-OK-OK-FAIL) by vger.kernel.org with ESMTP id S1726703AbgFQDaK (ORCPT ); Tue, 16 Jun 2020 23:30:10 -0400 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=redhat.com; s=mimecast20190719; t=1592364609; h=from:from:reply-to:subject:subject:date:date:message-id:message-id: to:to:cc:cc:mime-version:mime-version: content-transfer-encoding:content-transfer-encoding: in-reply-to:in-reply-to:references:references; bh=+Sic98tC9DpKLyGrIPnwXpZncoS8fVEZtxk95CX9DgA=; b=gGUzj02psx0GNgnmRP4b5BFOGmPwmYwuSa+iTP0JDkJs0mPN3Xm9RtLzg+n0P+dpupPzQu 90CczatAobzh1behxXgjm/UU/AZfNRsJboY7YPTZQhONzkTO2sPfmGxI1Ta9shfcEXyCBQ tiDd0gnnx6SGeH1nwswGtW7+FC/wPjY= Received: from mimecast-mx01.redhat.com (mimecast-mx01.redhat.com [209.132.183.4]) (Using TLS) by relay.mimecast.com with ESMTP id us-mta-57-px80pxgRNBWByBK4tTPWhQ-1; Tue, 16 Jun 2020 23:30:06 -0400 X-MC-Unique: px80pxgRNBWByBK4tTPWhQ-1 Received: from smtp.corp.redhat.com (int-mx06.intmail.prod.int.phx2.redhat.com [10.5.11.16]) (using TLSv1.2 with cipher AECDH-AES256-SHA (256/256 bits)) (No client certificate requested) by mimecast-mx01.redhat.com (Postfix) with ESMTPS id 305C610059C4; Wed, 17 Jun 2020 03:30:04 +0000 (UTC) Received: from jason-ThinkPad-X1-Carbon-6th.redhat.com (ovpn-13-217.pek2.redhat.com [10.72.13.217]) by smtp.corp.redhat.com (Postfix) with ESMTP id ACE345C1BD; Wed, 17 Jun 2020 03:29:58 +0000 (UTC) From: Jason Wang To: mst@redhat.com, jasowang@redhat.com, virtualization@lists.linux-foundation.org, linux-kernel@vger.kernel.org Cc: rob.miller@broadcom.com, lingshan.zhu@intel.com, eperezma@redhat.com, lulu@redhat.com, shahafs@mellanox.com, hanand@xilinx.com, mhabets@solarflare.com, gdawar@xilinx.com, saugatm@xilinx.com, vmireyno@marvell.com, zhangweining@ruijie.com.cn, eli@mellanox.com Subject: [PATCH 1/4] vdpa: introduce config op to get valid iova range Date: Wed, 17 Jun 2020 11:29:44 +0800 Message-Id: <20200617032947.6371-2-jasowang@redhat.com> In-Reply-To: <20200617032947.6371-1-jasowang@redhat.com> References: <20200617032947.6371-1-jasowang@redhat.com> MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-Scanned-By: MIMEDefang 2.79 on 10.5.11.16 Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org This patch introduce a config op to get valid iova range from the vDPA device. Signed-off-by: Jason Wang --- include/linux/vdpa.h | 14 ++++++++++++++ 1 file changed, 14 insertions(+) diff --git a/include/linux/vdpa.h b/include/linux/vdpa.h index 239db794357c..b7633ed2500c 100644 --- a/include/linux/vdpa.h +++ b/include/linux/vdpa.h @@ -41,6 +41,16 @@ struct vdpa_device { unsigned int index; }; +/** + * vDPA IOVA range - the IOVA range support by the device + * @start: start of the IOVA range + * @end: end of the IOVA range + */ +struct vdpa_iova_range { + u64 start; + u64 end; +}; + /** * vDPA_config_ops - operations for configuring a vDPA device. * Note: vDPA device drivers are required to implement all of the @@ -134,6 +144,9 @@ struct vdpa_device { * @get_generation: Get device config generation (optional) * @vdev: vdpa device * Returns u32: device generation + * @get_iova_range: Get supported iova range (on-chip IOMMU) + * @vdev: vdpa device + * Returns the iova range supported by the device * @set_map: Set device memory mapping (optional) * Needed for device that using device * specific DMA translation (on-chip IOMMU) @@ -195,6 +208,7 @@ struct vdpa_config_ops { void (*set_config)(struct vdpa_device *vdev, unsigned int offset, const void *buf, unsigned int len); u32 (*get_generation)(struct vdpa_device *vdev); + struct vdpa_iova_range (*get_iova_range)(struct vdpa_device *vdev); /* DMA ops */ int (*set_map)(struct vdpa_device *vdev, struct vhost_iotlb *iotlb); -- 2.20.1