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 11/11] iommu/arm-smmu: Advertise IOMMU_CAP_TRANSLATE_MSI
Date: Tue, 27 Sep 2016 20:48:38 +0000 [thread overview]
Message-ID: <1475009318-2617-12-git-send-email-eric.auger@redhat.com> (raw)
In-Reply-To: <1475009318-2617-1-git-send-email-eric.auger@redhat.com>
arm-smmu and arm-smmu-v3 do translate MSI write transactions
emitted by downstream devices. Advertise this property through
the capable operation.
Signed-off-by: Eric Auger <eric.auger@redhat.com>
---
drivers/iommu/arm-smmu-v3.c | 2 ++
drivers/iommu/arm-smmu.c | 2 ++
2 files changed, 4 insertions(+)
diff --git a/drivers/iommu/arm-smmu-v3.c b/drivers/iommu/arm-smmu-v3.c
index c86ba84..431ba8c 100644
--- a/drivers/iommu/arm-smmu-v3.c
+++ b/drivers/iommu/arm-smmu-v3.c
@@ -1375,6 +1375,8 @@ static bool arm_smmu_capable(enum iommu_cap cap)
return false;
case IOMMU_CAP_NOEXEC:
return true;
+ case IOMMU_CAP_TRANSLATE_MSI:
+ return true;
default:
return false;
}
diff --git a/drivers/iommu/arm-smmu.c b/drivers/iommu/arm-smmu.c
index 7af1dd0..b862a1c 100644
--- a/drivers/iommu/arm-smmu.c
+++ b/drivers/iommu/arm-smmu.c
@@ -1363,6 +1363,8 @@ static bool arm_smmu_capable(enum iommu_cap cap)
return false;
case IOMMU_CAP_NOEXEC:
return true;
+ case IOMMU_CAP_TRANSLATE_MSI:
+ return true;
default:
return false;
}
--
1.9.1
prev parent reply other threads:[~2016-09-27 20:50 UTC|newest]
Thread overview: 17+ 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 ` [RFC 01/11] iommu: Add iommu_domain_msi_geometry and DOMAIN_ATTR_MSI_GEOMETRY Eric Auger
2016-09-27 20:48 ` [RFC 02/11] iommu: Introduce IOMMU_CAP_TRANSLATE_MSI capability Eric Auger
2016-09-27 20:48 ` [RFC 03/11] iommu: Introduce IOMMU_DOMAIN_MIXED Eric Auger
2016-09-27 20:48 ` [RFC 04/11] iommu/dma: Allow MSI-only cookies Eric Auger
2016-09-27 20:48 ` [RFC 05/11] iommu/dma: iommu_dma_(un)map_mixed Eric Auger
2016-09-30 13:24 ` Robin Murphy
2016-10-02 9:56 ` Christoffer Dall
2016-10-04 17:18 ` Robin Murphy
2016-10-04 17:37 ` 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 ` [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 ` [RFC 09/11] vfio/type1: Reserve IOVAs for IOMMU_DOMAIN_MIXED domains 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 [this message]
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