Hi Lorenzo,
> -Original Message-
> From: Laurentiu Tudor
> Sent: Thursday, May 21, 2020 8:33 PM
> To: Lorenzo Pieralisi ; linux-arm-
> ker...@lists.infradead.org
> Cc: Diana Madalina Craciun (OSS) ; Makarand
> Pawagi ; iommu@lists.linux-foundation.org;
> linux-a...@vger.kernel.org;
Hi, Joerg
On 2020/5/12 下午12:08, Zhangfei Gao wrote:
Some platform devices appear as PCI but are
actually on the AMBA bus, and they need fixup in
drivers/pci/quirks.c handling iommu_fwnode.
So calling pci_fixup_final after iommu_fwnode is allocated.
For example:
Hisilicon platform device need
Hi Qian,
Thanks!
On 5/22/20 5:50 AM, Qian Cai wrote:
The commit 6ee1b77ba3ac ("iommu/vt-d: Add svm/sva invalidate function")
introduced a GCC warning,
drivers/iommu/intel-iommu.c:5330:1: warning: 'static' is not at beginning of
declaration [-Wold-style-declaration]
const static int
^
NVIDIA's Tegra194 soc uses two ARM MMU-500s together to interleave
IOVA accesses across them.
Add NVIDIA implementation for dual ARM MMU-500s and add new compatible
string for Tegra194 soc.
Signed-off-by: Krishna Reddy
---
MAINTAINERS | 2 +
drivers/iommu/Makefile
Add global/context fault hooks to allow NVIDIA SMMU implementation
handle faults across multiple SMMUs.
Signed-off-by: Krishna Reddy
---
drivers/iommu/arm-smmu-nvidia.c | 100
drivers/iommu/arm-smmu.c| 11 +++-
drivers/iommu/arm-smmu.h| 3 +
3
Enable SMMU translations for SDHCI and EQOS transactions on T194.
Signed-off-by: Krishna Reddy
---
arch/arm64/boot/dts/nvidia/tegra194.dtsi | 4
1 file changed, 4 insertions(+)
diff --git a/arch/arm64/boot/dts/nvidia/tegra194.dtsi
b/arch/arm64/boot/dts/nvidia/tegra194.dtsi
index
Changes in v5:
Rebased on top of git://git.kernel.org/pub/scm/linux/kernel/git/joro/iommu.git
next
v4 - https://lkml.org/lkml/2019/10/30/1054
v3 - https://lkml.org/lkml/2019/10/18/1601
v2 - https://lkml.org/lkml/2019/9/2/980
v1 - https://lkml.org/lkml/2019/8/29/1588
Krishna Reddy (5):
Add DT node for T194 SMMU to enable SMMU support.
Signed-off-by: Krishna Reddy
---
arch/arm64/boot/dts/nvidia/tegra194.dtsi | 77
1 file changed, 77 insertions(+)
diff --git a/arch/arm64/boot/dts/nvidia/tegra194.dtsi
b/arch/arm64/boot/dts/nvidia/tegra194.dtsi
index
Add binding for NVIDIA's Tegra194 Soc SMMU that is based
on ARM MMU-500.
Signed-off-by: Krishna Reddy
---
Documentation/devicetree/bindings/iommu/arm,smmu.yaml | 5 +
1 file changed, 5 insertions(+)
diff --git a/Documentation/devicetree/bindings/iommu/arm,smmu.yaml
On Thu, May 21, 2020 at 7:00 AM Lorenzo Pieralisi
wrote:
>
> There is nothing PCI bus specific in the of_msi_map_rid()
> implementation other than the requester ID tag for the input
> ID space. Rename requester ID to a more generic ID so that
> the translation code can be used by all busses that
On Thu, May 21, 2020 at 7:00 AM Lorenzo Pieralisi
wrote:
>
> From: Laurentiu Tudor
>
> The existing bindings cannot be used to specify the relationship
> between fsl-mc devices and GIC ITSes.
>
> Add a generic binding for mapping fsl-mc devices to GIC ITSes, using
> msi-map property.
>
>
On Thu, May 21, 2020 at 7:00 AM Lorenzo Pieralisi
wrote:
>
> Devices sitting on proprietary busses have a device ID space that
> is owned by the respective bus and related firmware bindings. In order
> to let the generic OF layer handle the input translations to
> an IOMMU id, for such busses the
On Thu, May 21, 2020 at 7:00 AM Lorenzo Pieralisi
wrote:
>
> There is nothing PCI specific (other than the RID - requester ID)
> in the of_map_rid() implementation, so the same function can be
> reused for input/output IDs mapping for other busses just as well.
>
> Rename the RID instances/names
The commit 6ee1b77ba3ac ("iommu/vt-d: Add svm/sva invalidate function")
introduced a GCC warning,
drivers/iommu/intel-iommu.c:5330:1: warning: 'static' is not at beginning of
declaration [-Wold-style-declaration]
const static int
^
Signed-off-by: Qian Cai
---
drivers/iommu/intel-iommu.c
On 2020-05-21 12:30, Prakash Gupta wrote:
Limit the iova size while freeing based on unmapped size. In absence of
this even with unmap failure, invalid iova is pushed to iova rcache and
subsequently can cause panic while rcache magazine is freed.
Can you elaborate on that panic?
On Thu, May 21, 2020 at 01:59:58PM +0100, Lorenzo Pieralisi wrote:
> iort_get_device_domain() is PCI specific but it need not be,
> since it can be used to retrieve IRQ domain nexus of any kind
> by adding an irq_domain_bus_token input to it.
>
> Make it PCI agnostic by also renaming the
On Thu, May 21, 2020 at 02:00:04PM +0100, Lorenzo Pieralisi wrote:
> From: Diana Craciun
>
> of_msi_map_get_device_domain() is PCI specific but it need not be and
> can be easily changed to be bus agnostic in order to be used by other
> busses by adding an IRQ domain bus token as an input
On Thu, 21 May 2020 17:00:04 +0530 Prakash Gupta wrote:
> Limit the iova size while freeing based on unmapped size. In absence of
> this even with unmap failure, invalid iova is pushed to iova rcache and
> subsequently can cause panic while rcache magazine is freed.
>
> Signed-off-by: Prakash
On Mon, May 18, 2020 at 01:59:49PM -0700, Doug Anderson wrote:
> On Mon, May 18, 2020 at 7:39 AM Will Deacon wrote:
> > On Fri, May 15, 2020 at 12:05:39PM -0700, Doug Anderson wrote:
> > > On Fri, May 1, 2020 at 3:30 AM Sharat Masetty
> > > wrote:
> > > >
> > > > This patch simply adds a new
Hi Joerg,
Please pull these Arm SMMU updates for 5.8. The branch is based on your
'core' branch from a little while ago.
Summary in the tag.
Cheers,
Will
--->8
The following changes since commit 1b032ec1ecbce6047af7d11c9db432e237cb17d8:
iommu: Unexport iommu_group_get_for_dev()
Hi Lorenzo,
On 5/21/2020 4:00 PM, Lorenzo Pieralisi wrote:
> From: Diana Craciun
>
> Add ACPI support in the fsl-mc driver. Driver parses MC DSDT table to
> extract memory and other resources.
>
> Interrupt (GIC ITS) information is extracted from the MADT table
> by
On 2020-05-21 15:17, Will Deacon wrote:
[+Marc]
On Tue, May 19, 2020 at 07:54:51PM +0200, Jean-Philippe Brucker wrote:
The SMMUv3 can handle invalidation targeted at TLB entries with shared
ASIDs. If the implementation supports broadcast TLB maintenance,
enable it
and keep track of it in a
Limit the iova size while freeing based on unmapped size. In absence of
this even with unmap failure, invalid iova is pushed to iova rcache and
subsequently can cause panic while rcache magazine is freed.
Signed-off-by: Prakash Gupta
:100644 100644 4959f5df21bd 098f7d377e04 M
[+Marc]
On Tue, May 19, 2020 at 07:54:51PM +0200, Jean-Philippe Brucker wrote:
> The SMMUv3 can handle invalidation targeted at TLB entries with shared
> ASIDs. If the implementation supports broadcast TLB maintenance, enable it
> and keep track of it in a feature bit. The SMMU will then be
On Thu, May 21, 2020 at 11:35:14AM +0100, Will Deacon wrote:
> On Tue, May 19, 2020 at 07:54:38PM +0200, Jean-Philippe Brucker wrote:
> > Shared Virtual Addressing (SVA) allows to share process page tables with
> > devices using the IOMMU, PASIDs and I/O page faults. Add SVA support to
> > the Arm
On Tue, May 19, 2020 at 07:54:52PM +0200, Jean-Philippe Brucker wrote:
> Aggregate all sanity-checks for sharing CPU page tables with the SMMU
> under a single ARM_SMMU_FEAT_SVA bit. For PCIe SVA, users also need to
> check FEAT_ATS and FEAT_PRI. For platform SVA, they will most likely have
> to
On Tue, May 19, 2020 at 07:54:45PM +0200, Jean-Philippe Brucker wrote:
> Extract some of the most generic TCR defines, so they can be reused by
> the page table sharing code.
>
> Signed-off-by: Jean-Philippe Brucker
> ---
> drivers/iommu/io-pgtable-arm.h | 30 ++
>
On Tue, May 19, 2020 at 07:54:50PM +0200, Jean-Philippe Brucker wrote:
> ARMv8.1 extensions added Virtualization Host Extensions (VHE), which allow
> to run a host kernel at EL2. When using normal DMA, Device and CPU address
> spaces are dissociated, and do not need to implement the same
>
There is nothing PCI specific (other than the RID - requester ID)
in the of_map_rid() implementation, so the same function can be
reused for input/output IDs mapping for other busses just as well.
Rename the RID instances/names to a generic "id" tag and provide
an of_map_rid() wrapper function so
The PCI bus domain number (used in the iort_match_node_callback() -
pci_domain_nr() call) is cascaded through the PCI bus hierarchy at PCI
bus enumeration time, therefore there is no need in iort_find_dev_node()
to walk the PCI bus upwards to grab the root bus to be passed to
iort_scan_node(), the
There is nothing PCI specific in iort_msi_map_rid(). Make it
a generic function, iort_msi_map_id() and provide a stub
for iort_msi_map_rid() on top of it to keep current users
unchanged.
Signed-off-by: Lorenzo Pieralisi
Cc: Will Deacon
Cc: Hanjun Guo
Cc: Sudeep Holla
Cc: Catalin Marinas
Cc:
Some HW devices are created as child devices of proprietary busses,
that have a bus specific policy definining how the child devices
wires representing the devices ID are translated into IOMMU and
IRQ controllers device IDs.
Current IORT code provides translations for:
- PCI devices, where the
From: Diana Craciun
Add ACPI support in the fsl-mc driver. Driver parses MC DSDT table to
extract memory and other resources.
Interrupt (GIC ITS) information is extracted from the MADT table
by drivers/irqchip/irq-gic-v3-its-fsl-mc-msi.c.
IORT table is parsed to configure DMA.
Signed-off-by:
Firmware bindings provided in the ACPI IORT table[1] and device tree
bindings define rules to carry out input/output ID mappings - ie
retrieving an IOMMU/MSI controller input ID for a device with a given
ID.
At the moment these firmware bindings are used exclusively for PCI
devices and their
There is nothing PCI bus specific in the of_msi_map_rid()
implementation other than the requester ID tag for the input
ID space. Rename requester ID to a more generic ID so that
the translation code can be used by all busses that require
input/output ID translations.
Leave a wrapper function
From: Diana Craciun
of_msi_map_get_device_domain() is PCI specific but it need not be and
can be easily changed to be bus agnostic in order to be used by other
busses by adding an IRQ domain bus token as an input parameter.
Signed-off-by: Diana Craciun
Signed-off-by: Lorenzo Pieralisi
Cc:
iort_get_device_domain() is PCI specific but it need not be,
since it can be used to retrieve IRQ domain nexus of any kind
by adding an irq_domain_bus_token input to it.
Make it PCI agnostic by also renaming the requestor ID input
to a more generic ID name.
Signed-off-by: Lorenzo Pieralisi
Cc:
When the iort_match_node_callback is invoked for a named component
the match should be executed upon a device with an ACPI companion.
For devices with no ACPI companion set-up the ACPI device tree must be
walked in order to find the first parent node with a companion set and
check the parent node
From: Laurentiu Tudor
The existing bindings cannot be used to specify the relationship
between fsl-mc devices and GIC ITSes.
Add a generic binding for mapping fsl-mc devices to GIC ITSes, using
msi-map property.
Signed-off-by: Laurentiu Tudor
Cc: Rob Herring
---
From: Diana Craciun
The DPRC driver is not taking into account the msi-map property
and assumes that the icid is the same as the stream ID. Although
this assumption is correct, generalize the code to include a
translation between icid and streamID.
Furthermore do not just copy the MSI domain
Devices sitting on proprietary busses have a device ID space that
is owned by the respective bus and related firmware bindings. In order
to let the generic OF layer handle the input translations to
an IOMMU id, for such busses the current of_dma_configure() interface
should be extended in order to
On Tue, May 19, 2020 at 07:54:56PM +0200, Jean-Philippe Brucker wrote:
> If the SMMU supports it and the kernel was built with HTTU support,
> enable hardware update of access and dirty flags. This is essential for
> shared page tables, to reduce the number of access faults on the fault
> queue.
Hi Jean-Philippe,
On Tue, May 19, 2020 at 07:54:38PM +0200, Jean-Philippe Brucker wrote:
> Shared Virtual Addressing (SVA) allows to share process page tables with
> devices using the IOMMU, PASIDs and I/O page faults. Add SVA support to
> the Arm SMMUv3 driver.
>
> Since v6 [1]:
> * Rename
On Wed, May 20, 2020 at 05:22:02PM +0200, Jean-Philippe Brucker wrote:
> The new pci_ats_supported() function checks if a device supports ATS and
> is allowed to use it.
>
> Signed-off-by: Jean-Philippe Brucker
> ---
> drivers/iommu/arm-smmu-v3.c | 20 +++-
> 1 file changed, 7
On Wed, May 20, 2020 at 03:36:16PM -0700, Dan Williams wrote:
> Certainly blindly cc'ing everyone recommended by
> scripts/get_maintainers.pl is overkill, but finding that subset is a
> bit of an art.
Yes. But I'd rather be not Cced and just find the complete thread on
a list. But all the lists
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