From: Eric Auger <eric.auger@redhat.com>
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 [thread overview]
Message-ID: <1475009318-2617-8-git-send-email-eric.auger@redhat.com> (raw)
In-Reply-To: <1475009318-2617-1-git-send-email-eric.auger@redhat.com>
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 <eric.auger@redhat.com>
---
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
WARNING: multiple messages have this Message-ID (diff)
From: Eric Auger <eric.auger-H+wXaHxf7aLQT0dZR+AlfA@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
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
Subject: [RFC 07/11] iommu: Use IOMMU_DOMAIN_MIXED typed domain when IOMMU translates MSI
Date: Tue, 27 Sep 2016 20:48:34 +0000 [thread overview]
Message-ID: <1475009318-2617-8-git-send-email-eric.auger@redhat.com> (raw)
In-Reply-To: <1475009318-2617-1-git-send-email-eric.auger-H+wXaHxf7aLQT0dZR+AlfA@public.gmane.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 <eric.auger-H+wXaHxf7aLQT0dZR+AlfA@public.gmane.org>
---
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
next prev parent reply other threads:[~2016-09-27 20:51 UTC|newest]
Thread overview: 38+ messages / expand[flat|nested] mbox.gz Atom feed top
2016-09-27 20:48 [RFC 00/11] KVM PCIe/MSI passthrough on ARM/ARM64: re-design with transparent MSI mapping Eric Auger
2016-09-27 20:48 ` Eric Auger
2016-09-27 20:48 ` Eric Auger
2016-09-27 20:48 ` [RFC 01/11] iommu: Add iommu_domain_msi_geometry and DOMAIN_ATTR_MSI_GEOMETRY Eric Auger
2016-09-27 20:48 ` Eric Auger
2016-09-27 20:48 ` [RFC 02/11] iommu: Introduce IOMMU_CAP_TRANSLATE_MSI capability Eric Auger
2016-09-27 20:48 ` Eric Auger
2016-09-27 20:48 ` [RFC 03/11] iommu: Introduce IOMMU_DOMAIN_MIXED Eric Auger
2016-09-27 20:48 ` Eric Auger
2016-09-27 20:48 ` [RFC 04/11] iommu/dma: Allow MSI-only cookies Eric Auger
2016-09-27 20:48 ` Eric Auger
2016-09-27 20:48 ` [RFC 05/11] iommu/dma: iommu_dma_(un)map_mixed Eric Auger
2016-09-27 20:48 ` Eric Auger
2016-09-30 13:24 ` Robin Murphy
2016-09-30 13:24 ` Robin Murphy
2016-09-30 13:24 ` Robin Murphy
2016-10-02 9:56 ` Christoffer Dall
2016-10-02 9:56 ` Christoffer Dall
2016-10-02 9:56 ` Christoffer Dall
2016-10-04 17:18 ` Robin Murphy
2016-10-04 17:18 ` Robin Murphy
2016-10-04 17:37 ` Auger Eric
2016-10-04 17:37 ` Auger Eric
2016-10-03 9:38 ` Auger Eric
2016-10-03 9:38 ` Auger Eric
2016-10-03 9:38 ` Auger Eric
2016-09-27 20:48 ` [RFC 06/11] iommu/arm-smmu: Allow IOMMU_DOMAIN_MIXED domain allocation Eric Auger
2016-09-27 20:48 ` Eric Auger
2016-09-27 20:48 ` Eric Auger [this message]
2016-09-27 20:48 ` [RFC 07/11] iommu: Use IOMMU_DOMAIN_MIXED typed domain when IOMMU translates MSI Eric Auger
2016-09-27 20:48 ` [RFC 08/11] vfio/type1: Sets the IOVA window in case MSI IOVA need to be allocated Eric Auger
2016-09-27 20:48 ` Eric Auger
2016-09-27 20:48 ` [RFC 09/11] vfio/type1: Reserve IOVAs for IOMMU_DOMAIN_MIXED domains Eric Auger
2016-09-27 20:48 ` Eric Auger
2016-09-27 20:48 ` [RFC 10/11] iommu/arm-smmu: Do not advertise IOMMU_CAP_INTR_REMAP Eric Auger
2016-09-27 20:48 ` Eric Auger
2016-09-27 20:48 ` [RFC 11/11] iommu/arm-smmu: Advertise IOMMU_CAP_TRANSLATE_MSI Eric Auger
2016-09-27 20:48 ` Eric Auger
Reply instructions:
You may reply publicly to this message via plain-text email
using any one of the following methods:
* Save the following mbox file, import it into your mail client,
and reply-to-all from there: mbox
Avoid top-posting and favor interleaved quoting:
https://en.wikipedia.org/wiki/Posting_style#Interleaved_style
* Reply using the --to, --cc, and --in-reply-to
switches of git-send-email(1):
git send-email \
--in-reply-to=1475009318-2617-8-git-send-email-eric.auger@redhat.com \
--to=eric.auger@redhat.com \
--cc=Bharat.Bhushan@freescale.com \
--cc=Jean-Philippe.Brucker@arm.com \
--cc=Manish.Jaggi@caviumnetworks.com \
--cc=alex.williamson@redhat.com \
--cc=christoffer.dall@linaro.org \
--cc=drjones@redhat.com \
--cc=eric.auger.pro@gmail.com \
--cc=iommu@lists.linux-foundation.org \
--cc=jason@lakedaemon.net \
--cc=joro@8bytes.org \
--cc=kvm@vger.kernel.org \
--cc=linux-arm-kernel@lists.infradead.org \
--cc=linux-kernel@vger.kernel.org \
--cc=marc.zyngier@arm.com \
--cc=p.fedin@samsung.com \
--cc=pranav.sawargaonkar@gmail.com \
--cc=robin.murphy@arm.com \
--cc=tglx@linutronix.de \
--cc=will.deacon@arm.com \
--cc=yehuday@marvell.com \
/path/to/YOUR_REPLY
https://kernel.org/pub/software/scm/git/docs/git-send-email.html
* If your mail client supports setting the In-Reply-To header
via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line
before the message body.
This is an external index of several public inboxes,
see mirroring instructions on how to clone and mirror
all data and code used by this external index.