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=-9.9 required=3.0 tests=BAYES_00,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 1C2ACC433E1 for ; Fri, 21 Aug 2020 09:28:36 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id E0C482087D for ; Fri, 21 Aug 2020 09:28:35 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (1024-bit key) header.d=redhat.com header.i=@redhat.com header.b="gwYQStTY" Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1728433AbgHUJ2e (ORCPT ); Fri, 21 Aug 2020 05:28:34 -0400 Received: from us-smtp-delivery-124.mimecast.com ([216.205.24.124]:33067 "EHLO us-smtp-delivery-124.mimecast.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1725806AbgHUJ2d (ORCPT ); Fri, 21 Aug 2020 05:28:33 -0400 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=redhat.com; s=mimecast20190719; t=1598002112; h=from:from:reply-to:subject:subject:date:date:message-id:message-id: to:to:cc:cc:in-reply-to:in-reply-to:references:references; bh=EfuSz9sq7bu7KMXpjENGk8A6GgtVjh1dqr2JFHwc5Pc=; b=gwYQStTY8UthG34pFZCcCGBtFpCYX4E07q1luOhypqM2+OsxKtrulLl5oZ9yMsdBztQxd4 7zNRhj+dXDX00OFpI1nenkkBjsf2YIMHdAZxnX/a6w3Ps0JiUl2e76BbCN8Yd699DBabBZ /fVj8WvKoVSX7W8/rnkcmmwgsSdvk4Q= 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-323-lOsv2HXYPVScwGHlISun5A-1; Fri, 21 Aug 2020 05:28:30 -0400 X-MC-Unique: lOsv2HXYPVScwGHlISun5A-1 Received: from smtp.corp.redhat.com (int-mx05.intmail.prod.int.phx2.redhat.com [10.5.11.15]) (using TLSv1.2 with cipher AECDH-AES256-SHA (256/256 bits)) (No client certificate requested) by mimecast-mx01.redhat.com (Postfix) with ESMTPS id A0AC6100CF71; Fri, 21 Aug 2020 09:28:28 +0000 (UTC) Received: from hp-dl380pg8-01.lab.eng.pek2.redhat.com (hp-dl380pg8-01.lab.eng.pek2.redhat.com [10.73.8.10]) by smtp.corp.redhat.com (Postfix) with ESMTP id E5A5A71780; Fri, 21 Aug 2020 09:28:23 +0000 (UTC) From: Jason Wang To: mst@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, Jason Wang Subject: [PATCH V2 1/3] vdpa: introduce config op to get valid iova range Date: Fri, 21 Aug 2020 05:28:11 -0400 Message-Id: <20200821092813.8952-2-jasowang@redhat.com> In-Reply-To: <20200821092813.8952-1-jasowang@redhat.com> References: <20200821092813.8952-1-jasowang@redhat.com> X-Scanned-By: MIMEDefang 2.79 on 10.5.11.15 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 | 15 +++++++++++++++ 1 file changed, 15 insertions(+) diff --git a/include/linux/vdpa.h b/include/linux/vdpa.h index eae0bfd87d91..30bc7a7223bb 100644 --- a/include/linux/vdpa.h +++ b/include/linux/vdpa.h @@ -52,6 +52,16 @@ struct vdpa_device { int nvqs; }; +/** + * vDPA IOVA range - the IOVA range support by the device + * @first: start of the IOVA range + * @last: end of the IOVA range + */ +struct vdpa_iova_range { + u64 first; + u64 last; +}; + /** * vDPA_config_ops - operations for configuring a vDPA device. * Note: vDPA device drivers are required to implement all of the @@ -151,6 +161,10 @@ struct vdpa_device { * @get_generation: Get device config generation (optional) * @vdev: vdpa device * Returns u32: device generation + * @get_iova_range: Get supported iova range (optional) + * @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) @@ -216,6 +230,7 @@ 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); -- 2.18.1