From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S936286AbcI0UvJ (ORCPT ); Tue, 27 Sep 2016 16:51:09 -0400 Received: from mx1.redhat.com ([209.132.183.28]:53114 "EHLO mx1.redhat.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1756393AbcI0Utd (ORCPT ); Tue, 27 Sep 2016 16:49:33 -0400 From: Eric Auger To: eric.auger@redhat.com, eric.auger.pro@gmail.com, christoffer.dall@linaro.org, marc.zyngier@arm.com, robin.murphy@arm.com, alex.williamson@redhat.com, will.deacon@arm.com, joro@8bytes.org, tglx@linutronix.de, jason@lakedaemon.net, linux-arm-kernel@lists.infradead.org Cc: kvm@vger.kernel.org, drjones@redhat.com, linux-kernel@vger.kernel.org, Bharat.Bhushan@freescale.com, pranav.sawargaonkar@gmail.com, p.fedin@samsung.com, iommu@lists.linux-foundation.org, Jean-Philippe.Brucker@arm.com, yehuday@marvell.com, Manish.Jaggi@caviumnetworks.com Subject: [RFC 07/11] iommu: Use IOMMU_DOMAIN_MIXED typed domain when IOMMU translates MSI Date: Tue, 27 Sep 2016 20:48:34 +0000 Message-Id: <1475009318-2617-8-git-send-email-eric.auger@redhat.com> In-Reply-To: <1475009318-2617-1-git-send-email-eric.auger@redhat.com> References: <1475009318-2617-1-git-send-email-eric.auger@redhat.com> X-Greylist: Sender IP whitelisted, not delayed by milter-greylist-4.5.16 (mx1.redhat.com [10.5.110.32]); Tue, 27 Sep 2016 20:49:33 +0000 (UTC) Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org If the IOMMU advertises IOMMU_CAP_TRANSLATE_MSI choose IOMMU_DOMAIN_MIXED domain type instead of IOMMU_DOMAIN_UNMANAGED to allow transparent allocation of MSI frame IOVAs. Signed-off-by: Eric Auger --- drivers/iommu/iommu.c | 5 ++++- 1 file changed, 4 insertions(+), 1 deletion(-) diff --git a/drivers/iommu/iommu.c b/drivers/iommu/iommu.c index 617cb2b..8b4b90c 100644 --- a/drivers/iommu/iommu.c +++ b/drivers/iommu/iommu.c @@ -1069,7 +1069,10 @@ static struct iommu_domain *__iommu_domain_alloc(struct bus_type *bus, struct iommu_domain *iommu_domain_alloc(struct bus_type *bus) { - return __iommu_domain_alloc(bus, IOMMU_DOMAIN_UNMANAGED); + if (bus->iommu_ops->capable(IOMMU_CAP_TRANSLATE_MSI)) + return __iommu_domain_alloc(bus, IOMMU_DOMAIN_MIXED); + else + return __iommu_domain_alloc(bus, IOMMU_DOMAIN_UNMANAGED); } EXPORT_SYMBOL_GPL(iommu_domain_alloc); -- 1.9.1 From mboxrd@z Thu Jan 1 00:00:00 1970 From: Eric Auger Subject: [RFC 07/11] iommu: Use IOMMU_DOMAIN_MIXED typed domain when IOMMU translates MSI Date: Tue, 27 Sep 2016 20:48:34 +0000 Message-ID: <1475009318-2617-8-git-send-email-eric.auger@redhat.com> References: <1475009318-2617-1-git-send-email-eric.auger@redhat.com> Mime-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Cc: drjones-H+wXaHxf7aLQT0dZR+AlfA@public.gmane.org, kvm-u79uwXL29TY76Z2rM5mHXA@public.gmane.org, Manish.Jaggi-M3mlKVOIwJVv6pq1l3V1OdBPR1lH4CV8@public.gmane.org, p.fedin-Sze3O3UU22JBDgjK7y7TUQ@public.gmane.org, linux-kernel-u79uwXL29TY76Z2rM5mHXA@public.gmane.org, iommu-cunTk1MwBs9QetFLy7KEm3xJsTq8ys+cHZ5vskTnxNA@public.gmane.org, pranav.sawargaonkar-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org, yehuday-eYqpPyKDWXRBDgjK7y7TUQ@public.gmane.org To: eric.auger-H+wXaHxf7aLQT0dZR+AlfA@public.gmane.org, eric.auger.pro-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org, christoffer.dall-QSEj5FYQhm4dnm+yROfE0A@public.gmane.org, marc.zyngier-5wv7dgnIgG8@public.gmane.org, robin.murphy-5wv7dgnIgG8@public.gmane.org, alex.williamson-H+wXaHxf7aLQT0dZR+AlfA@public.gmane.org, will.deacon-5wv7dgnIgG8@public.gmane.org, joro-zLv9SwRftAIdnm+yROfE0A@public.gmane.org, tglx-hfZtesqFncYOwBW4kG4KsQ@public.gmane.org, jason-NLaQJdtUoK4Be96aLqz0jA@public.gmane.org, linux-arm-kernel-IAPFreCvJWM7uuMidbF8XUB+6BGkLq7r@public.gmane.org Return-path: In-Reply-To: <1475009318-2617-1-git-send-email-eric.auger-H+wXaHxf7aLQT0dZR+AlfA@public.gmane.org> List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Sender: iommu-bounces-cunTk1MwBs9QetFLy7KEm3xJsTq8ys+cHZ5vskTnxNA@public.gmane.org Errors-To: iommu-bounces-cunTk1MwBs9QetFLy7KEm3xJsTq8ys+cHZ5vskTnxNA@public.gmane.org List-Id: kvm.vger.kernel.org If the IOMMU advertises IOMMU_CAP_TRANSLATE_MSI choose IOMMU_DOMAIN_MIXED domain type instead of IOMMU_DOMAIN_UNMANAGED to allow transparent allocation of MSI frame IOVAs. Signed-off-by: Eric Auger --- drivers/iommu/iommu.c | 5 ++++- 1 file changed, 4 insertions(+), 1 deletion(-) diff --git a/drivers/iommu/iommu.c b/drivers/iommu/iommu.c index 617cb2b..8b4b90c 100644 --- a/drivers/iommu/iommu.c +++ b/drivers/iommu/iommu.c @@ -1069,7 +1069,10 @@ static struct iommu_domain *__iommu_domain_alloc(struct bus_type *bus, struct iommu_domain *iommu_domain_alloc(struct bus_type *bus) { - return __iommu_domain_alloc(bus, IOMMU_DOMAIN_UNMANAGED); + if (bus->iommu_ops->capable(IOMMU_CAP_TRANSLATE_MSI)) + return __iommu_domain_alloc(bus, IOMMU_DOMAIN_MIXED); + else + return __iommu_domain_alloc(bus, IOMMU_DOMAIN_UNMANAGED); } EXPORT_SYMBOL_GPL(iommu_domain_alloc); -- 1.9.1