From patchwork Mon Jun 19 17:14:52 2017 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Alex Williamson X-Patchwork-Id: 9797025 Return-Path: Received: from mail.wl.linuxfoundation.org (pdx-wl-mail.web.codeaurora.org [172.30.200.125]) by pdx-korg-patchwork.web.codeaurora.org (Postfix) with ESMTP id C70CA6020B for ; Mon, 19 Jun 2017 17:16:30 +0000 (UTC) Received: from mail.wl.linuxfoundation.org (localhost [127.0.0.1]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id A50E527F8F for ; Mon, 19 Jun 2017 17:16:30 +0000 (UTC) Received: by mail.wl.linuxfoundation.org (Postfix, from userid 486) id 9A05E281F9; Mon, 19 Jun 2017 17:16:30 +0000 (UTC) X-Spam-Checker-Version: SpamAssassin 3.3.1 (2010-03-16) on pdx-wl-mail.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-6.9 required=2.0 tests=BAYES_00,RCVD_IN_DNSWL_HI autolearn=unavailable version=3.3.1 Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id 7F1CC27F8F for ; Mon, 19 Jun 2017 17:16:29 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1752161AbdFSRPR (ORCPT ); Mon, 19 Jun 2017 13:15:17 -0400 Received: from mx1.redhat.com ([209.132.183.28]:8136 "EHLO mx1.redhat.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751038AbdFSRPP (ORCPT ); Mon, 19 Jun 2017 13:15:15 -0400 Received: from smtp.corp.redhat.com (int-mx03.intmail.prod.int.phx2.redhat.com [10.5.11.13]) (using TLSv1.2 with cipher AECDH-AES256-SHA (256/256 bits)) (No client certificate requested) by mx1.redhat.com (Postfix) with ESMTPS id 1DBB8883A6; Mon, 19 Jun 2017 17:14:55 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.3.2 mx1.redhat.com 1DBB8883A6 Authentication-Results: ext-mx02.extmail.prod.ext.phx2.redhat.com; dmarc=none (p=none dis=none) header.from=redhat.com Authentication-Results: ext-mx02.extmail.prod.ext.phx2.redhat.com; spf=pass smtp.mailfrom=alex.williamson@redhat.com DKIM-Filter: OpenDKIM Filter v2.11.0 mx1.redhat.com 1DBB8883A6 Received: from gimli.home (ovpn-116-67.phx2.redhat.com [10.3.116.67]) by smtp.corp.redhat.com (Postfix) with ESMTP id 7C06B17AA8; Mon, 19 Jun 2017 17:14:52 +0000 (UTC) Subject: [PATCH v2 4/9] iommu: Add driver-not-bound notification From: Alex Williamson To: kvm@vger.kernel.org Cc: eric.auger@redhat.com, alex.williamson@redhat.com, Joerg Roedel , linux-kernel@vger.kernel.org Date: Mon, 19 Jun 2017 11:14:52 -0600 Message-ID: <20170619171452.14047.1705.stgit@gimli.home> In-Reply-To: <20170619170323.14047.26504.stgit@gimli.home> References: <20170619170323.14047.26504.stgit@gimli.home> User-Agent: StGit/0.17.1-dirty MIME-Version: 1.0 X-Scanned-By: MIMEDefang 2.79 on 10.5.11.13 X-Greylist: Sender IP whitelisted, not delayed by milter-greylist-4.5.16 (mx1.redhat.com [10.5.110.26]); Mon, 19 Jun 2017 17:14:55 +0000 (UTC) Sender: kvm-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: kvm@vger.kernel.org X-Virus-Scanned: ClamAV using ClamSMTP The driver core supports a BUS_NOTIFY_DRIVER_NOT_BOUND notification sent if a driver fails to bind to a device. Extend IOMMU group notifications to include a version of this. Signed-off-by: Alex Williamson Acked-by: Joerg Roedel Reviewed-by: Eric Auger --- drivers/iommu/iommu.c | 3 +++ include/linux/iommu.h | 1 + 2 files changed, 4 insertions(+) diff --git a/drivers/iommu/iommu.c b/drivers/iommu/iommu.c index cf7ca7e70777..1a59b3626ab2 100644 --- a/drivers/iommu/iommu.c +++ b/drivers/iommu/iommu.c @@ -1139,6 +1139,9 @@ static int iommu_bus_notifier(struct notifier_block *nb, case BUS_NOTIFY_UNBOUND_DRIVER: group_action = IOMMU_GROUP_NOTIFY_UNBOUND_DRIVER; break; + case BUS_NOTIFY_DRIVER_NOT_BOUND: + group_action = IOMMU_GROUP_NOTIFY_DRIVER_NOT_BOUND; + break; } if (group_action) diff --git a/include/linux/iommu.h b/include/linux/iommu.h index 2cb54adc4a33..5f6b01398bc1 100644 --- a/include/linux/iommu.h +++ b/include/linux/iommu.h @@ -271,6 +271,7 @@ static inline void iommu_device_set_fwnode(struct iommu_device *iommu, #define IOMMU_GROUP_NOTIFY_BOUND_DRIVER 4 /* Post Driver bind */ #define IOMMU_GROUP_NOTIFY_UNBIND_DRIVER 5 /* Pre Driver unbind */ #define IOMMU_GROUP_NOTIFY_UNBOUND_DRIVER 6 /* Post Driver unbind */ +#define IOMMU_GROUP_NOTIFY_DRIVER_NOT_BOUND 7 /* Driver bind failed */ extern int bus_set_iommu(struct bus_type *bus, const struct iommu_ops *ops); extern bool iommu_present(struct bus_type *bus);