Hi Will,
>
> Is this workaround only needed for bypass STEs? If not, we have a problem
> when we install a stage-1 entry, because we'll clear the EATS bits as it
> stands.
>
Yes, this _was_ needed only in Bypass STEs, AFAIK.
However, the h/w fixes that were committed recently has this worked o
On Fri, Dec 18, 2015 at 04:09:39PM +0800, Yong Wu wrote:
> This patch add mediatek iommu dts binding document.
>
> Signed-off-by: Yong Wu
Acked-by: Rob Herring
___
iommu mailing list
iommu@lists.linux-foundation.org
https://lists.linuxfoundation.org/m
Robin,
On Fri, Dec 18, 2015 at 9:01 AM, Robin Murphy wrote:
> Doug reports that the equivalent page allocator on 32-bit ARM exhibits
> particularly pathalogical behaviour under memory pressure when
> fragmentation is high, where allocating a 4MB buffer takes tens of
> seconds and the number of ca
With {read,write}q_relaxed now able to fall back to the common
nonatomic-hi-lo helper, make use of that so that we don't have to
open-code our own. In the process, also convert the other remaining
split accesses, and repurpose the custom accessor to smooth out the
couple of troublesome instances wh
Whilst commit 9439eb3ab9d1 ("asm-generic: io: implement relaxed
accessor macros as conditional wrappers") makes the *_relaxed forms of
I/O accessors universally available to drivers, in cases where writeq()
is implemented via the io-64-nonatomic helpers, writeq_relaxed() will
end up falling back to
On 18/12/15 08:09, Yong Wu wrote:
This patch adds support for mediatek m4u (MultiMedia Memory Management
Unit).
Signed-off-by: Yong Wu
---
drivers/iommu/Kconfig | 14 +
drivers/iommu/Makefile| 1 +
drivers/iommu/mtk_iommu.c | 734 ++
3
Doug reports that the equivalent page allocator on 32-bit ARM exhibits
particularly pathalogical behaviour under memory pressure when
fragmentation is high, where allocating a 4MB buffer takes tens of
seconds and the number of calls to alloc_pages() is over 9000![1]
We can drastically improve that
When mapping a non-page-aligned scatterlist entry, we copy the original
offset to the output DMA address before aligning it to hand off to
iommu_map_sg(), then later adding the IOVA page address portion to get
the final mapped address. However, when the IOVA page size is smaller
than the CPU page s
dma-iommu.c was naughtily relying on an implicit transitive #include of
linux/vmalloc.h, which is apparently not present on some architectures.
Add that, plus a couple more headers for other functions which are used
similarly.
Reported-by: kbuild test robot
Signed-off-by: Robin Murphy
---
Hi Jo
Hi Linus,
The following changes since commit 9f9499ae8e6415cefc4fe0a96ad0e27864353c89:
Linux 4.4-rc5 (2015-12-13 17:42:58 -0800)
are available in the git repository at:
git://git.kernel.org/pub/scm/linux/kernel/git/joro/iommu.git
tags/iommu-fixes-v4.4-rc5
for you to fetch changes up to 7f
Hi Yong,
[auto build test ERROR on tegra/for-next]
[also build test ERROR on v4.4-rc5]
[cannot apply to iommu/next next-20151217]
url:
https://github.com/0day-ci/linux/commits/Yong-Wu/MT8173-IOMMU-SUPPORT/20151218-161550
base: https://git.kernel.org/pub/scm/linux/kernel/git/tegra/linux for
This patch add smi binding document and smi local arbiter header file.
Signed-off-by: Yong Wu
---
Hi Rob,
Because I move the header file(dt-bindings/memory/mt8173-larb-port.h)
from our patch[1/5] into here. I am not sure you agree with this,
so don't add your Ack above.
Acked-by: Rob Herring
This patch add SMI(Smart Multimedia Interface) driver. This driver
is responsible to enable/disable iommu and control the power domain
and clocks of each local arbiter.
Signed-off-by: Yong Wu
---
drivers/memory/Kconfig | 8 ++
drivers/memory/Makefile| 1 +
drivers/memory/mtk-smi.c
This patch adds support for mediatek m4u (MultiMedia Memory Management
Unit).
Signed-off-by: Yong Wu
---
drivers/iommu/Kconfig | 14 +
drivers/iommu/Makefile| 1 +
drivers/iommu/mtk_iommu.c | 734 ++
3 files changed, 749 insertions(+)
creat
This patch add the iommu/larbs nodes for mt8173
Signed-off-by: Yong Wu
---
arch/arm64/boot/dts/mediatek/mt8173.dtsi | 81
1 file changed, 81 insertions(+)
diff --git a/arch/arm64/boot/dts/mediatek/mt8173.dtsi
b/arch/arm64/boot/dts/mediatek/mt8173.dtsi
index 4dd
This patch set adds support for m4u(Multimedia Memory Management Unit),
Currently it only support the m4u with 2 levels of pagetable on mt8173.
It's based on Robin Murphy's reposting Short-descriptor v2[1].
Please check the hardware block diagram of Mediatek IOMMU.
m4u (Mul
This patch add mediatek iommu dts binding document.
Signed-off-by: Yong Wu
---
.../devicetree/bindings/iommu/mediatek,iommu.txt | 68 ++
1 file changed, 68 insertions(+)
create mode 100644 Documentation/devicetree/bindings/iommu/mediatek,iommu.txt
diff --git a/Documentati
17 matches
Mail list logo
