From: Marc Zyngier <marc.zyngier-5wv7dgnIgG8@public.gmane.org>
To: Robin Murphy <robin.murphy-5wv7dgnIgG8@public.gmane.org>,
joro-zLv9SwRftAIdnm+yROfE0A@public.gmane.org,
will.deacon-5wv7dgnIgG8@public.gmane.org,
iommu-cunTk1MwBs9QetFLy7KEm3xJsTq8ys+cHZ5vskTnxNA@public.gmane.org,
linux-arm-kernel-IAPFreCvJWM7uuMidbF8XUB+6BGkLq7r@public.gmane.org
Cc: devicetree-u79uwXL29TY76Z2rM5mHXA@public.gmane.org,
Jason Cooper <jason-NLaQJdtUoK4Be96aLqz0jA@public.gmane.org>,
punit.agrawal-5wv7dgnIgG8@public.gmane.org,
linux-kernel-u79uwXL29TY76Z2rM5mHXA@public.gmane.org,
thunder.leizhen-hv44wF8Li93QT0dZR+AlfA@public.gmane.org,
Thomas Gleixner <tglx-hfZtesqFncYOwBW4kG4KsQ@public.gmane.org>
Subject: Re: [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-5wv7dgnIgG8@public.gmane.org>
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-hfZtesqFncYOwBW4kG4KsQ@public.gmane.org>
> CC: Jason Cooper <jason-NLaQJdtUoK4Be96aLqz0jA@public.gmane.org>
> CC: Marc Zyngier <marc.zyngier-5wv7dgnIgG8@public.gmane.org>
> CC: linux-kernel-u79uwXL29TY76Z2rM5mHXA@public.gmane.org
> Signed-off-by: Robin Murphy <robin.murphy-5wv7dgnIgG8@public.gmane.org>
Thanks for the quick respin.
Acked-by: Marc Zyngier <marc.zyngier-5wv7dgnIgG8@public.gmane.org>
M.
--
Jazz is not dead. It just smells funny...
WARNING: multiple messages have this Message-ID (diff)
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...
WARNING: multiple messages have this Message-ID (diff)
From: Marc Zyngier <marc.zyngier@arm.com>
To: Robin Murphy <robin.murphy@arm.com>,
joro@8bytes.org, will.deacon@arm.com,
iommu@lists.linux-foundation.org,
linux-arm-kernel@lists.infradead.org
Cc: devicetree@vger.kernel.org, lorenzo.pieralisi@arm.com,
jean-philippe.brucker@arm.com, punit.agrawal@arm.com,
thunder.leizhen@huawei.com, eric.auger@redhat.com,
Thomas Gleixner <tglx@linutronix.de>,
Jason Cooper <jason@lakedaemon.net>,
linux-kernel@vger.kernel.org
Subject: Re: [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@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: 66+ 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 ` Robin Murphy
[not found] ` <cover.1473173789.git.robin.murphy-5wv7dgnIgG8@public.gmane.org>
2016-09-06 15:33 ` [PATCH v6 01/20] Docs: dt: add PCI IOMMU map bindings Robin Murphy
2016-09-06 15:33 ` 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 ` 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 ` Robin Murphy
2016-09-06 15:33 ` [PATCH v6 04/20] iommu/of: Introduce iommu_fwspec Robin Murphy
2016-09-06 15:33 ` 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 ` 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 ` 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 ` 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 ` 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 ` 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 ` 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 ` 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 ` 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 ` Robin Murphy
2016-09-06 15:33 ` [PATCH v6 14/20] iommu/arm-smmu: Intelligent SMR allocation Robin Murphy
2016-09-06 15:33 ` 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 ` 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 ` 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 ` Robin Murphy
2016-09-06 15:33 ` [PATCH v6 18/20] iommu/arm-smmu: Set domain geometry Robin Murphy
2016-09-06 15:33 ` Robin Murphy
2016-09-06 15:33 ` [PATCH v6 19/20] iommu/dma: Add support for mapping MSIs Robin Murphy
2016-09-06 15:33 ` Robin Murphy
2016-09-06 15:33 ` Robin Murphy
[not found] ` <2da5fca62886afd46cd2a5f7da1da872ee4a833d.1473173789.git.robin.murphy-5wv7dgnIgG8@public.gmane.org>
2016-09-07 9:55 ` [PATCH v6.1] " Robin Murphy
2016-09-07 9:55 ` Robin Murphy
2016-09-07 9:55 ` Robin Murphy
[not found] ` <33fb440d91a5fe8c3e7dc8a5e12d83a5253911dd.1473242018.git.robin.murphy-5wv7dgnIgG8@public.gmane.org>
2016-09-09 14:38 ` Thomas Gleixner
2016-09-09 14:38 ` Thomas Gleixner
2016-09-09 14:38 ` Thomas Gleixner
2016-09-09 14:42 ` Marc Zyngier [this message]
2016-09-09 14:42 ` Marc Zyngier
2016-09-09 14:42 ` Marc Zyngier
2016-09-06 15:33 ` [PATCH v6 20/20] iommu/dma: Avoid PCI host bridge windows Robin Murphy
2016-09-06 15:33 ` 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 17:37 ` Will Deacon
2016-09-09 18:17 ` [PATCH 21/20] drm/exynos: Fix iommu_dma_init_domain prototype change Robin Murphy
2016-09-09 18:17 ` Robin Murphy
[not found] ` <47cdafe035630f29aa1e8ff121c5a5306a2f1eb2.1473444220.git.robin.murphy-5wv7dgnIgG8@public.gmane.org>
2016-09-12 9:18 ` Will Deacon
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
2016-09-09 18:17 ` Robin Murphy
[not found] ` <9c467662ca0fb562cff6d5c9443d77eacb257060.1473443407.git.robin.murphy-5wv7dgnIgG8@public.gmane.org>
2016-09-12 9:12 ` Will Deacon
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
2016-09-09 18:17 ` Robin Murphy
[not found] ` <6067fc2b12b3bc681687753eedd941c8244c22fa.1473443407.git.robin.murphy-5wv7dgnIgG8@public.gmane.org>
2016-09-12 9:16 ` Will Deacon
2016-09-12 9:16 ` Will Deacon
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