From: marc.zyngier@arm•com (Marc Zyngier)
To: linux-arm-kernel@lists•infradead.org
Subject: [PATCH v6.1] iommu/dma: Add support for mapping MSIs
Date: Fri, 9 Sep 2016 15:42:22 +0100 [thread overview]
Message-ID: <57D2CA4E.3060101@arm.com> (raw)
In-Reply-To: <33fb440d91a5fe8c3e7dc8a5e12d83a5253911dd.1473242018.git.robin.murphy@arm.com>
Hi Robin,
On 07/09/16 10:55, Robin Murphy wrote:
> When an MSI doorbell is located downstream of an IOMMU, attaching
> devices to a DMA ops domain and switching on translation leads to a rude
> shock when their attempt to write to the physical address returned by
> the irqchip driver faults (or worse, writes into some already-mapped
> buffer) and no interrupt is forthcoming.
>
> Address this by adding a hook for relevant irqchip drivers to call from
> their compose_msi_msg() callback, to swizzle the physical address with
> an appropriatly-mapped IOVA for any device attached to one of our DMA
> ops domains.
>
> CC: Thomas Gleixner <tglx@linutronix•de>
> CC: Jason Cooper <jason@lakedaemon•net>
> CC: Marc Zyngier <marc.zyngier@arm•com>
> CC: linux-kernel at vger.kernel.org
> Signed-off-by: Robin Murphy <robin.murphy@arm•com>
Thanks for the quick respin.
Acked-by: Marc Zyngier <marc.zyngier@arm•com>
M.
--
Jazz is not dead. It just smells funny...
next prev parent reply other threads:[~2016-09-09 14:42 UTC|newest]
Thread overview: 31+ messages / expand[flat|nested] mbox.gz Atom feed top
2016-09-06 15:33 [PATCH v6 00/20] Generic DT bindings for PCI IOMMUs and ARM SMMU Robin Murphy
2016-09-06 15:33 ` [PATCH v6 01/20] Docs: dt: add PCI IOMMU map bindings Robin Murphy
2016-09-06 15:33 ` [PATCH v6 02/20] of/irq: Break out msi-map lookup (again) Robin Murphy
2016-09-06 15:33 ` [PATCH v6 03/20] iommu/of: Handle iommu-map property for PCI Robin Murphy
2016-09-06 15:33 ` [PATCH v6 04/20] iommu/of: Introduce iommu_fwspec Robin Murphy
2016-09-06 15:33 ` [PATCH v6 05/20] iommu/arm-smmu: Implement of_xlate() for SMMUv3 Robin Murphy
2016-09-06 15:33 ` [PATCH v6 06/20] iommu/arm-smmu: Support non-PCI devices with SMMUv3 Robin Murphy
2016-09-06 15:33 ` [PATCH v6 07/20] iommu/arm-smmu: Set PRIVCFG in stage 1 STEs Robin Murphy
2016-09-06 15:33 ` [PATCH v6 08/20] iommu/arm-smmu: Handle stream IDs more dynamically Robin Murphy
2016-09-06 15:33 ` [PATCH v6 09/20] iommu/arm-smmu: Consolidate stream map entry state Robin Murphy
2016-09-06 15:33 ` [PATCH v6 10/20] iommu/arm-smmu: Keep track of S2CR state Robin Murphy
2016-09-06 15:33 ` [PATCH v6 11/20] iommu/arm-smmu: Refactor mmu-masters handling Robin Murphy
2016-09-06 15:33 ` [PATCH v6 12/20] iommu/arm-smmu: Streamline SMMU data lookups Robin Murphy
2016-09-06 15:33 ` [PATCH v6 13/20] iommu/arm-smmu: Add a stream map entry iterator Robin Murphy
2016-09-06 15:33 ` [PATCH v6 14/20] iommu/arm-smmu: Intelligent SMR allocation Robin Murphy
2016-09-06 15:33 ` [PATCH v6 15/20] iommu/arm-smmu: Convert to iommu_fwspec Robin Murphy
2016-09-06 15:33 ` [PATCH v6 16/20] Docs: dt: document ARM SMMU generic binding usage Robin Murphy
2016-09-06 15:33 ` [PATCH v6 17/20] iommu/arm-smmu: Wire up generic configuration support Robin Murphy
2016-09-06 15:33 ` [PATCH v6 18/20] iommu/arm-smmu: Set domain geometry Robin Murphy
2016-09-06 15:33 ` [PATCH v6 19/20] iommu/dma: Add support for mapping MSIs Robin Murphy
2016-09-07 9:55 ` [PATCH v6.1] " Robin Murphy
2016-09-09 14:38 ` Thomas Gleixner
2016-09-09 14:42 ` Marc Zyngier [this message]
2016-09-06 15:33 ` [PATCH v6 20/20] iommu/dma: Avoid PCI host bridge windows Robin Murphy
2016-09-09 17:37 ` [PATCH v6 00/20] Generic DT bindings for PCI IOMMUs and ARM SMMU Will Deacon
2016-09-09 18:17 ` [PATCH 21/20] drm/exynos: Fix iommu_dma_init_domain prototype change Robin Murphy
2016-09-12 9:18 ` Will Deacon
2016-09-09 18:17 ` [PATCH 22/20] iommu/arm-smmu: Fall back to global bypass Robin Murphy
2016-09-12 9:12 ` Will Deacon
2016-09-09 18:17 ` [PATCH 4.5/20] Docs: dt: document ARM SMMUv3 generic binding usage Robin Murphy
2016-09-12 9:16 ` Will Deacon
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