Hi Brain,
On Wed, Aug 19, 2020 at 02:22:04PM +0100, Brian Starkey wrote:
> Hi KyongHo,
>
> On Wed, Aug 19, 2020 at 12:46:26PM +0900, Cho KyongHo wrote:
> > I have seriously considered CPA in our product but we developed our own
> > because of the pool in CPA.
>
On Tue, Aug 18, 2020 at 11:55:57AM +0100, Brian Starkey wrote:
> Hi,
>
> On Tue, Aug 18, 2020 at 05:04:12PM +0900, Hyesoo Yu wrote:
> > These patch series to introduce a new dma heap, chunk heap.
> > That heap is needed for special HW that requires bulk allocation of
> > fixed high order pages.
On Tue, Aug 18, 2020 at 05:10:06PM +0100, Christoph Hellwig wrote:
> On Tue, Aug 18, 2020 at 11:07:57AM +0100, Will Deacon wrote:
> > > > so I'm not sure
> > > > that we should be complicating the implementation like this to try to
> > > > make it "fast".
> > > >
> > > I agree that this patch
On Tue, Aug 18, 2020 at 11:07:57AM +0100, Will Deacon wrote:
> On Tue, Aug 18, 2020 at 06:37:39PM +0900, Cho KyongHo wrote:
> > On Tue, Aug 18, 2020 at 09:28:53AM +0100, Will Deacon wrote:
> > > On Tue, Aug 18, 2020 at 04:43:10PM +0900, Cho KyongHo wrote:
> > > >
On Tue, Aug 18, 2020 at 09:37:20AM +0100, Christoph Hellwig wrote:
> On Tue, Aug 18, 2020 at 09:28:53AM +0100, Will Deacon wrote:
> > On Tue, Aug 18, 2020 at 04:43:10PM +0900, Cho KyongHo wrote:
> > > Cache maintenance operations in the most of CPU architectures needs
> >
On Tue, Aug 18, 2020 at 09:28:53AM +0100, Will Deacon wrote:
> On Tue, Aug 18, 2020 at 04:43:10PM +0900, Cho KyongHo wrote:
> > Cache maintenance operations in the most of CPU architectures needs
> > memory barrier after the cache maintenance for the DMAs to view the
> >
On Mon, Aug 10, 2020 at 09:32:18AM +0200, David Hildenbrand wrote:
> On 07.08.20 09:08, Pekka Enberg wrote:
> > Hi Cho and David,
> >
> > On Mon, Aug 3, 2020 at 10:57 AM David Hildenbrand wrote:
> >>
> >> On 03.08.20 08:10, pullip....@sam
() which do not involve memory barrier.
So the users called those functions require explicitly calling
arch_sync_barrier_for_device() and arch_sync_barrier_for_cpu(),
respectively to confirm the view of memory is consistent between the
CPUs and DMAs.
Signed-off-by: Cho KyongHo
---
drivers/iommu/dma
6a9356234 ("dma-mapping: introduce relaxed version of dma sync") to
reduce redundant memory barriers in sg versions of DMA sync API.
Implementing relaxed version of DMA sync API will dramatically increase
the performance of dma_sync_sg_for_{device|cpu}().
Signed-off-by: Cho KyongHo
---
On Tue, Aug 04, 2020 at 11:12:55AM +0200, Vlastimil Babka wrote:
> On 8/4/20 4:35 AM, Cho KyongHo wrote:
> > On Mon, Aug 03, 2020 at 05:45:55PM +0200, Vlastimil Babka wrote:
> >> On 8/3/20 9:57 AM, David Hildenbrand wrote:
> >> > On 03.08.20 08:10, pullip@samsun
On Mon, Aug 03, 2020 at 05:45:55PM +0200, Vlastimil Babka wrote:
> On 8/3/20 9:57 AM, David Hildenbrand wrote:
> > On 03.08.20 08:10, pullip@samsung.com wrote:
> >> From: Cho KyongHo
> >>
> >> LPDDR5 introduces rank switch delay. If three successive DRAM
Hi,
On Mon, Aug 03, 2020 at 09:57:10AM +0200, David Hildenbrand wrote:
> On 03.08.20 08:10, pullip@samsung.com wrote:
> > From: Cho KyongHo
> >
> > LPDDR5 introduces rank switch delay. If three successive DRAM accesses
> > happens and the first and the
-Original Message-
From: Hans Verkuil [mailto:hverk...@xs4all.nl]
Sent: Thursday, April 09, 2015 1:01 AM
Mauro,
Please revert this patch: vm_area_cachep is not exported, so you cannot use
this in a module.
Cho KyongHo, if you believe that vm_area_cachep should be exported so it can
be used here
-Original Message-
From: Hans Verkuil [mailto:hverk...@xs4all.nl]
Sent: Thursday, April 09, 2015 1:01 AM
Mauro,
Please revert this patch: vm_area_cachep is not exported, so you cannot use
this in a module.
Cho KyongHo, if you believe that vm_area_cachep should be exported so it can
be used here
The slab for vm_area_struct which is vm_area_cachep is already prepared
for the general use. Instead of kmalloc() for the vma copy for userptr,
allocation from vm_area_cachep is more beneficial.
CC: Mauro Carvalho Chehab
CC: Hans Verkuil
CC: Laurent Pinchart
Signed-off-by: Cho KyongHo
Pinchart laurent.pinch...@ideasonboard.com
Signed-off-by: Cho KyongHo pullip@samsung.com
---
drivers/media/v4l2-core/videobuf2-memops.c |4 ++--
1 file changed, 2 insertions(+), 2 deletions(-)
diff --git a/drivers/media/v4l2-core/videobuf2-memops.c
b/drivers/media/v4l2-core/videobuf2
"
> depends on ARCH_EXYNOS
> select IOMMU_API
> + select ARM_DMA_USE_IOMMU
> help
> Support for the IOMMU (System MMU) of Samsung Exynos application
> processor family. This enables H/W multimedia accelerators to see
> --
Reviewe
select IOMMU_API
+ select ARM_DMA_USE_IOMMU
help
Support for the IOMMU (System MMU) of Samsung Exynos application
processor family. This enables H/W multimedia accelerators to see
--
Reviewed-by: Cho KyongHo pullip@samsung.com'
Thank you.
KyongHo
--
To unsubscribe
On Fri, 16 May 2014 14:23:18 +0200, Thierry Reding wrote:
> From: Thierry Reding
>
> This commit introduces a generic device tree binding for IOMMU devices.
> Only a very minimal subset is described here, but it is enough to cover
> the requirements of both the Exynos System MMU and Tegra SMMU
On Fri, 16 May 2014 14:23:18 +0200, Thierry Reding wrote:
From: Thierry Reding tred...@nvidia.com
This commit introduces a generic device tree binding for IOMMU devices.
Only a very minimal subset is described here, but it is enough to cover
the requirements of both the Exynos System MMU and
On Thu, 15 May 2014 22:37:31 +0200, Thierry Reding wrote:
> On Mon, Apr 28, 2014 at 02:05:30PM +0200, Arnd Bergmann wrote:
> [...]
> > let me clarify by example:
> >
> > iommu@1 {
> > compatible = "some,simple-iommu";
> > reg = <1>;
> > #iommu-cells = <0>;
On Thu, 15 May 2014 22:37:31 +0200, Thierry Reding wrote:
On Mon, Apr 28, 2014 at 02:05:30PM +0200, Arnd Bergmann wrote:
[...]
let me clarify by example:
iommu@1 {
compatible = some,simple-iommu;
reg = 1;
#iommu-cells = 0; /* supports only one
On Tue, 06 May 2014 20:05:14 +0200, Tomasz Figa wrote:
> On 27.04.2014 09:37, Shaik Ameer Basha wrote:
> > From: Cho KyongHo
> >
> > Some master device descriptor like fimc-is which is an abstraction
> > of very complex H/W may have multiple System MMUs. For th
On Tue, 06 May 2014 20:05:14 +0200, Tomasz Figa wrote:
On 27.04.2014 09:37, Shaik Ameer Basha wrote:
From: Cho KyongHo pullip@samsung.com
Some master device descriptor like fimc-is which is an abstraction
of very complex H/W may have multiple System MMUs. For those devices
On Tue, 06 May 2014 20:08:47 +0200, Tomasz Figa wrote:
> On 06.05.2014 19:59, Joerg Roedel wrote:
> > On Wed, Apr 30, 2014 at 04:27:10PM +0530, Shaik Ameer Basha wrote:
> >> This series is going on for quite a long time and most of the patches here
> >> doesn't depend on dt bindings. As Exynos
On Tue, 06 May 2014 20:08:47 +0200, Tomasz Figa wrote:
On 06.05.2014 19:59, Joerg Roedel wrote:
On Wed, Apr 30, 2014 at 04:27:10PM +0530, Shaik Ameer Basha wrote:
This series is going on for quite a long time and most of the patches here
doesn't depend on dt bindings. As Exynos IOMMU h/w is
On Mon, 28 Apr 2014 16:13:19 -0700, Doug Anderson wrote:
> Vikas,
>
>
> On Sun, Apr 27, 2014 at 10:39 AM, Vikas Sajjan wrote:
> > Hi shaik,
> >
> > +Doug, Abhilash,
> >
> > On Sun, Apr 27, 2014 at 1:08 PM, Shaik Ameer Basha
> > wrote:
>
On Mon, 28 Apr 2014 16:08:14 +0530, Tushar Behera wrote:
> On 04/27/2014 01:07 PM, Shaik Ameer Basha wrote:
> > From: Cho KyongHo
> >
> > Some master device descriptor like fimc-is which is an abstraction
> > of very complex H/W may have multiple System MMUs. For th
On Sun, 27 Apr 2014 20:17:48 +0200, Arnd Bergmann wrote:
> On Sunday 27 April 2014 13:07:47 Shaik Ameer Basha wrote:
> > @@ -542,14 +592,41 @@ static int __init exynos_sysmmu_probe(struct
> > platform_device *pdev)
> > }
> > }
> >
> > + /* Relation between master and System
On Sun, 27 Apr 2014 20:17:48 +0200, Arnd Bergmann wrote:
On Sunday 27 April 2014 13:07:47 Shaik Ameer Basha wrote:
@@ -542,14 +592,41 @@ static int __init exynos_sysmmu_probe(struct
platform_device *pdev)
}
}
+ /* Relation between master and System MMU is 1:1. */
On Mon, 28 Apr 2014 16:08:14 +0530, Tushar Behera wrote:
On 04/27/2014 01:07 PM, Shaik Ameer Basha wrote:
From: Cho KyongHo pullip@samsung.com
Some master device descriptor like fimc-is which is an abstraction
of very complex H/W may have multiple System MMUs. For those devices
On Mon, 28 Apr 2014 16:13:19 -0700, Doug Anderson wrote:
Vikas,
On Sun, Apr 27, 2014 at 10:39 AM, Vikas Sajjan sajjan.li...@gmail.com wrote:
Hi shaik,
+Doug, Abhilash,
On Sun, Apr 27, 2014 at 1:08 PM, Shaik Ameer Basha
shaik.am...@samsung.com wrote:
From: Cho KyongHo pullip
On Tue, 22 Apr 2014 18:53:51 +0530, Shaik Ameer Basha wrote:
> Hi KyongHo Cho,
>
>
>
> On Fri, Mar 14, 2014 at 10:40 AM, Cho KyongHo wrote:
> > Some master device descriptor like fimc-is which is an abstraction
> > of very complex H/W may have multiple Sys
On Sun, 20 Apr 2014 15:25:59 +0530, Shaik Ameer Basha wrote:
> Hi KyongHo Cho,
>
> Please find the comments inline.
>
> On Fri, Mar 14, 2014 at 10:36 AM, Cho KyongHo wrote:
> > This patch adds dts entries for the System MMU devices found on
> > Exynos4 and Exynos5 So
On Sun, 20 Apr 2014 15:25:59 +0530, Shaik Ameer Basha wrote:
Hi KyongHo Cho,
Please find the comments inline.
On Fri, Mar 14, 2014 at 10:36 AM, Cho KyongHo pullip@samsung.com wrote:
This patch adds dts entries for the System MMU devices found on
Exynos4 and Exynos5 SoC series
On Tue, 22 Apr 2014 18:53:51 +0530, Shaik Ameer Basha wrote:
Hi KyongHo Cho,
On Fri, Mar 14, 2014 at 10:40 AM, Cho KyongHo pullip@samsung.com wrote:
Some master device descriptor like fimc-is which is an abstraction
of very complex H/W may have multiple System MMUs. For those
On Thu, 20 Mar 2014 11:54:58 +0100, Tomasz Figa wrote:
> On 20.03.2014 11:22, Cho KyongHo wrote:
> > On Wed, 19 Mar 2014 16:14:57 +0100, Tomasz Figa wrote:
> >> On 19.03.2014 14:20, Tomasz Figa wrote:
> >>> On 19.03.2014 01:39, Cho KyongHo wrote:
> >>>&g
On Thu, 20 Mar 2014 11:44:50 +0100, Tomasz Figa wrote:
> On 20.03.2014 11:03, Cho KyongHo wrote:
> > On Wed, 19 Mar 2014 13:08:42 +0100, Tomasz Figa wrote:
> >> On 19.03.2014 10:01, Sachin Kamat wrote:
> >>> On 19 March 2014 14:29, Cho KyongHo wrote:
> >&g
On Wed, 19 Mar 2014 19:51:21 +0100, Tomasz Figa wrote:
> On 19.03.2014 19:37, Grant Grundler wrote:
> > On Wed, Mar 19, 2014 at 10:30 AM, Tomasz Figa wrote:
> > ...
> >> As I said, AFAIK the trend is to get rid of ordering by initcalls and make
> >> sure that drivers can handle missing
On Wed, 19 Mar 2014 09:54:39 -0700, Grant Grundler wrote:
> On Wed, Mar 19, 2014 at 6:12 AM, Tomasz Figa wrote:
> ...
> >> Device driver is not only for the scholarship but also for the real use.
> >
> > Huh? I'm not sure what kind of comment is this.
>
> I'm guessing Cho meant: "This isn't an
On Wed, 19 Mar 2014 16:14:57 +0100, Tomasz Figa wrote:
> On 19.03.2014 14:20, Tomasz Figa wrote:
> > On 19.03.2014 01:39, Cho KyongHo wrote:
> >> On Tue, 18 Mar 2014 15:26:48 +0100, Tomasz Figa wrote:
> >>>
> >>>
> >>> On 18.03.2014 14:01,
On Wed, 19 Mar 2014 13:08:42 +0100, Tomasz Figa wrote:
> On 19.03.2014 10:01, Sachin Kamat wrote:
> > On 19 March 2014 14:29, Cho KyongHo wrote:
> >> On Tue, 18 Mar 2014 16:14:53 +0100, Tomasz Figa wrote:
> >>> On 18.03.2014 12:09, Cho KyongHo wrote:
> >&g
On Tue, 18 Mar 2014 18:33:20 -0700, Grant Grundler wrote:
> On Thu, Mar 13, 2014 at 10:13 PM, Cho KyongHo wrote:
> > This commit introduces sysmmu_pte_t for page table entries and
> > sysmmu_iova_t vor I/O virtual address that is manipulated by
> > exynos-iommu driver. The p
On Tue, 18 Mar 2014 18:33:20 -0700, Grant Grundler wrote:
On Thu, Mar 13, 2014 at 10:13 PM, Cho KyongHo pullip@samsung.com wrote:
This commit introduces sysmmu_pte_t for page table entries and
sysmmu_iova_t vor I/O virtual address that is manipulated by
exynos-iommu driver. The purpose
On Wed, 19 Mar 2014 13:08:42 +0100, Tomasz Figa wrote:
On 19.03.2014 10:01, Sachin Kamat wrote:
On 19 March 2014 14:29, Cho KyongHo pullip@samsung.com wrote:
On Tue, 18 Mar 2014 16:14:53 +0100, Tomasz Figa wrote:
On 18.03.2014 12:09, Cho KyongHo wrote:
On Fri, 14 Mar 2014 20:52:43
On Wed, 19 Mar 2014 16:14:57 +0100, Tomasz Figa wrote:
On 19.03.2014 14:20, Tomasz Figa wrote:
On 19.03.2014 01:39, Cho KyongHo wrote:
On Tue, 18 Mar 2014 15:26:48 +0100, Tomasz Figa wrote:
On 18.03.2014 14:01, Cho KyongHo wrote:
On Fri, 14 Mar 2014 17:12:03 +0100, Tomasz Figa wrote
On Wed, 19 Mar 2014 09:54:39 -0700, Grant Grundler wrote:
On Wed, Mar 19, 2014 at 6:12 AM, Tomasz Figa t.f...@samsung.com wrote:
...
Device driver is not only for the scholarship but also for the real use.
Huh? I'm not sure what kind of comment is this.
I'm guessing Cho meant: This
On Wed, 19 Mar 2014 19:51:21 +0100, Tomasz Figa wrote:
On 19.03.2014 19:37, Grant Grundler wrote:
On Wed, Mar 19, 2014 at 10:30 AM, Tomasz Figa t.f...@samsung.com wrote:
...
As I said, AFAIK the trend is to get rid of ordering by initcalls and make
sure that drivers can handle missing
On Thu, 20 Mar 2014 11:44:50 +0100, Tomasz Figa wrote:
On 20.03.2014 11:03, Cho KyongHo wrote:
On Wed, 19 Mar 2014 13:08:42 +0100, Tomasz Figa wrote:
On 19.03.2014 10:01, Sachin Kamat wrote:
On 19 March 2014 14:29, Cho KyongHo pullip@samsung.com wrote:
On Tue, 18 Mar 2014 16:14:53
On Thu, 20 Mar 2014 11:54:58 +0100, Tomasz Figa wrote:
On 20.03.2014 11:22, Cho KyongHo wrote:
On Wed, 19 Mar 2014 16:14:57 +0100, Tomasz Figa wrote:
On 19.03.2014 14:20, Tomasz Figa wrote:
On 19.03.2014 01:39, Cho KyongHo wrote:
On Tue, 18 Mar 2014 15:26:48 +0100, Tomasz Figa wrote
On Tue, 18 Mar 2014 16:33:04 +0100, Tomasz Figa wrote:
> On 18.03.2014 12:23, Cho KyongHo wrote:
> > On Fri, 14 Mar 2014 17:07:53 +0100, Tomasz Figa wrote:
> >> Hi KyongHo,
> >>
> >> On 14.03.2014 06:10, Cho KyongHo wrote:
>
> [snip]
>
On Tue, 18 Mar 2014 16:25:11 +0100, Tomasz Figa wrote:
> On 18.03.2014 11:52, Cho KyongHo wrote:
> > On Fri, 14 Mar 2014 14:39:33 +0100, Tomasz Figa wrote:
> >>> @@ -557,11 +558,23 @@ static int exynos_sysmmu_probe(struct
> >>> platform_devic
On Tue, 18 Mar 2014 16:14:53 +0100, Tomasz Figa wrote:
> On 18.03.2014 12:09, Cho KyongHo wrote:
> > On Fri, 14 Mar 2014 20:52:43 +0530, Sachin Kamat wrote:
> >> Hi KyongHo,
> >>
> >> On 14 March 2014 10:35, Cho KyongHo wrote:
> >>> This patch u
On Wed, 19 Mar 2014 08:59:09 +0900, Jingoo Han wrote:
> On Wednesday, March 19, 2014 12:12 AM, Tomasz Figa wrote:
> > On 18.03.2014 11:38, Cho KyongHo wrote:
> > > On Fri, 14 Mar 2014 14:28:36 +0100, Tomasz Figa wrote:
> > >> On 14.03.2014 06:05, Cho KyongHo wrote:
&
On Tue, 18 Mar 2014 16:46:24 +0530, Sachin Kamat wrote:
> On 18 March 2014 16:44, Cho KyongHo wrote:
> > On Fri, 14 Mar 2014 20:57:42 +0530, Sachin Kamat wrote:
> >> Hi KyongHo,
> >>
> >> On 14 March 2014 10:39, Cho KyongHo wrote:
> >> >
> >&
On Tue, 18 Mar 2014 16:46:24 +0530, Sachin Kamat wrote:
On 18 March 2014 16:44, Cho KyongHo pullip@samsung.com wrote:
On Fri, 14 Mar 2014 20:57:42 +0530, Sachin Kamat wrote:
Hi KyongHo,
On 14 March 2014 10:39, Cho KyongHo pullip@samsung.com wrote:
-static struct
On Wed, 19 Mar 2014 08:59:09 +0900, Jingoo Han wrote:
On Wednesday, March 19, 2014 12:12 AM, Tomasz Figa wrote:
On 18.03.2014 11:38, Cho KyongHo wrote:
On Fri, 14 Mar 2014 14:28:36 +0100, Tomasz Figa wrote:
On 14.03.2014 06:05, Cho KyongHo wrote:
This patch uses managed device helper
On Tue, 18 Mar 2014 16:14:53 +0100, Tomasz Figa wrote:
On 18.03.2014 12:09, Cho KyongHo wrote:
On Fri, 14 Mar 2014 20:52:43 +0530, Sachin Kamat wrote:
Hi KyongHo,
On 14 March 2014 10:35, Cho KyongHo pullip@samsung.com wrote:
This patch uses managed device helper functions
On Tue, 18 Mar 2014 16:25:11 +0100, Tomasz Figa wrote:
On 18.03.2014 11:52, Cho KyongHo wrote:
On Fri, 14 Mar 2014 14:39:33 +0100, Tomasz Figa wrote:
@@ -557,11 +558,23 @@ static int exynos_sysmmu_probe(struct
platform_device *pdev)
return 0;
}
-static struct
On Tue, 18 Mar 2014 16:33:04 +0100, Tomasz Figa wrote:
On 18.03.2014 12:23, Cho KyongHo wrote:
On Fri, 14 Mar 2014 17:07:53 +0100, Tomasz Figa wrote:
Hi KyongHo,
On 14.03.2014 06:10, Cho KyongHo wrote:
[snip]
@@ -677,11 +679,40 @@ static int __init exynos_sysmmu_probe(struct
On Tue, 18 Mar 2014 16:09:50 +0100, Tomasz Figa wrote:
> On 18.03.2014 10:56, Cho KyongHo wrote:
> > On Fri, 14 Mar 2014 13:59:00 +0100, Tomasz Figa wrote:
> >> Hi KyongHo,
> >>
> >> On 14.03.2014 06:08, Cho KyongHo wrote:
>
> [snip]
>
>
On Tue, 18 Mar 2014 15:26:48 +0100, Tomasz Figa wrote:
>
>
> On 18.03.2014 14:01, Cho KyongHo wrote:
> > On Fri, 14 Mar 2014 17:12:03 +0100, Tomasz Figa wrote:
> >> Hi KyongHo,
> >>
> >> On 14.03.2014 06:10, Cho KyongHo wrote:
> >>
On Fri, 14 Mar 2014 17:12:03 +0100, Tomasz Figa wrote:
> Hi KyongHo,
>
> On 14.03.2014 06:10, Cho KyongHo wrote:
> > Some master device descriptor like fimc-is which is an abstraction
> > of very complex H/W may have multiple System MMUs. For those devices,
> > the
On Fri, 14 Mar 2014 17:07:53 +0100, Tomasz Figa wrote:
> Hi KyongHo,
>
> On 14.03.2014 06:10, Cho KyongHo wrote:
> > This adds support for Suspend to RAM and Runtime Power Management.
> >
> > Since System MMU is located in the same local power domain of its
>
On Fri, 14 Mar 2014 20:57:42 +0530, Sachin Kamat wrote:
> Hi KyongHo,
>
> On 14 March 2014 10:39, Cho KyongHo wrote:
> > This commit adds device tree support for System MMU.
> >
> > Signed-off-by: Cho KyongHo
> > ---
> > drivers/iommu/Kconfig
On Fri, 14 Mar 2014 20:52:43 +0530, Sachin Kamat wrote:
> Hi KyongHo,
>
> On 14 March 2014 10:35, Cho KyongHo wrote:
> > This patch uses managed device helper functions in the probe().
> >
> > Signed-off-by: Cho KyongHo
> > ---
> [snip]
>
> >
On Fri, 14 Mar 2014 22:27:59 +0530, Sachin Kamat wrote:
> Hi KyongHo,
>
> On 14 March 2014 19:13, Tomasz Figa wrote:
> > Hi KyongHo,
> >
> >
> > On 14.03.2014 06:09, Cho KyongHo wrote:
> >>
> >> exynos-iommu driver must care about master H/W's
On Fri, 14 Mar 2014 14:39:33 +0100, Tomasz Figa wrote:
> Hi KyongHo,
>
> On 14.03.2014 06:09, Cho KyongHo wrote:
> > This commit adds device tree support for System MMU.
> >
> > Signed-off-by: Cho KyongHo
> > ---
> > drivers/iommu/Kconfig|5 +
On Fri, 14 Mar 2014 14:28:36 +0100, Tomasz Figa wrote:
> Hi KyongHo,
>
> On 14.03.2014 06:05, Cho KyongHo wrote:
> > This patch uses managed device helper functions in the probe().
> >
> > Signed-off-by: Cho KyongHo
> > ---
> >
On Fri, 14 Mar 2014 14:07:32 +0100, Tomasz Figa wrote:
> Hi KyongHo,
>
> On 14.03.2014 06:05, Cho KyongHo wrote:
> > System MMU driver is changed to control only a single instance of
> > System MMU at a time. Since a single instance of System MMU has only
> > a sing
On Fri, 14 Mar 2014 13:59:00 +0100, Tomasz Figa wrote:
> Hi KyongHo,
>
> On 14.03.2014 06:08, Cho KyongHo wrote:
> > Runtime power management by exynos-iommu driver independently from
> > master H/W's runtime pm is not useful for power saving since attaching
> > maste
On Fri, 14 Mar 2014 13:59:00 +0100, Tomasz Figa wrote:
Hi KyongHo,
On 14.03.2014 06:08, Cho KyongHo wrote:
Runtime power management by exynos-iommu driver independently from
master H/W's runtime pm is not useful for power saving since attaching
master H/W in probing time turns on its
On Fri, 14 Mar 2014 14:07:32 +0100, Tomasz Figa wrote:
Hi KyongHo,
On 14.03.2014 06:05, Cho KyongHo wrote:
System MMU driver is changed to control only a single instance of
System MMU at a time. Since a single instance of System MMU has only
a single clock descriptor for its clock gating
On Fri, 14 Mar 2014 14:28:36 +0100, Tomasz Figa wrote:
Hi KyongHo,
On 14.03.2014 06:05, Cho KyongHo wrote:
This patch uses managed device helper functions in the probe().
Signed-off-by: Cho KyongHo pullip@samsung.com
---
drivers/iommu/exynos-iommu.c | 64
On Fri, 14 Mar 2014 14:39:33 +0100, Tomasz Figa wrote:
Hi KyongHo,
On 14.03.2014 06:09, Cho KyongHo wrote:
This commit adds device tree support for System MMU.
Signed-off-by: Cho KyongHo pullip@samsung.com
---
drivers/iommu/Kconfig|5 ++---
drivers/iommu/exynos
On Fri, 14 Mar 2014 22:27:59 +0530, Sachin Kamat wrote:
Hi KyongHo,
On 14 March 2014 19:13, Tomasz Figa t.f...@samsung.com wrote:
Hi KyongHo,
On 14.03.2014 06:09, Cho KyongHo wrote:
exynos-iommu driver must care about master H/W's gate clock as well as
System MMU's gate clock
On Fri, 14 Mar 2014 20:52:43 +0530, Sachin Kamat wrote:
Hi KyongHo,
On 14 March 2014 10:35, Cho KyongHo pullip@samsung.com wrote:
This patch uses managed device helper functions in the probe().
Signed-off-by: Cho KyongHo pullip@samsung.com
---
[snip]
+ data-clk
On Fri, 14 Mar 2014 20:57:42 +0530, Sachin Kamat wrote:
Hi KyongHo,
On 14 March 2014 10:39, Cho KyongHo pullip@samsung.com wrote:
This commit adds device tree support for System MMU.
Signed-off-by: Cho KyongHo pullip@samsung.com
---
drivers/iommu/Kconfig|5
On Fri, 14 Mar 2014 17:07:53 +0100, Tomasz Figa wrote:
Hi KyongHo,
On 14.03.2014 06:10, Cho KyongHo wrote:
This adds support for Suspend to RAM and Runtime Power Management.
Since System MMU is located in the same local power domain of its
master H/W, System MMU must be initialized
On Fri, 14 Mar 2014 17:12:03 +0100, Tomasz Figa wrote:
Hi KyongHo,
On 14.03.2014 06:10, Cho KyongHo wrote:
Some master device descriptor like fimc-is which is an abstraction
of very complex H/W may have multiple System MMUs. For those devices,
the design of the link between System MMU
On Tue, 18 Mar 2014 15:26:48 +0100, Tomasz Figa wrote:
On 18.03.2014 14:01, Cho KyongHo wrote:
On Fri, 14 Mar 2014 17:12:03 +0100, Tomasz Figa wrote:
Hi KyongHo,
On 14.03.2014 06:10, Cho KyongHo wrote:
Some master device descriptor like fimc-is which is an abstraction
of very
On Tue, 18 Mar 2014 16:09:50 +0100, Tomasz Figa wrote:
On 18.03.2014 10:56, Cho KyongHo wrote:
On Fri, 14 Mar 2014 13:59:00 +0100, Tomasz Figa wrote:
Hi KyongHo,
On 14.03.2014 06:08, Cho KyongHo wrote:
[snip]
-static bool __exynos_sysmmu_disable(struct sysmmu_drvdata *data
On Fri, 14 Mar 2014 13:20:23 +0100, Tomasz Figa wrote:
> Hi KyongHo,
>
> On 14.03.2014 06:06, Cho KyongHo wrote:
> > This patch adds dts entries for the System MMU devices found on
> > Exynos4 and Exynos5 SoC series and the System MMU binding
> > documentation.
>
On Fri, 14 Mar 2014 13:17:26 +0100, Tomasz Figa wrote:
> Hi KyongHo,
>
> On 14.03.2014 06:06, Cho KyongHo wrote:
> > This adds gate clocks of all System MMUs and their master IPs
> > that are not apeared in clk-exynos5250.c and clk-exynos5420.c
> > Also fixes GATE_IP
On Fri, 14 Mar 2014 17:29:36 +0530, Sachin Kamat wrote:
> On 14 March 2014 17:19, Cho KyongHo wrote:
> >> From: Sachin Kamat [mailto:sachin.ka...@linaro.org]
> >> Sent: Friday, March 14, 2014 7:00 PM
> >>
> >> On 14 March 2014 10:31, Cho KyongHo wrote
On Fri, 14 Mar 2014 17:29:36 +0530, Sachin Kamat wrote:
On 14 March 2014 17:19, Cho KyongHo pullip@samsung.com wrote:
From: Sachin Kamat [mailto:sachin.ka...@linaro.org]
Sent: Friday, March 14, 2014 7:00 PM
On 14 March 2014 10:31, Cho KyongHo pullip@samsung.com wrote:
Commit
On Fri, 14 Mar 2014 13:17:26 +0100, Tomasz Figa wrote:
Hi KyongHo,
On 14.03.2014 06:06, Cho KyongHo wrote:
This adds gate clocks of all System MMUs and their master IPs
that are not apeared in clk-exynos5250.c and clk-exynos5420.c
Also fixes GATE_IP_ACP to 0x18800 and changed GATE_DA
On Fri, 14 Mar 2014 13:20:23 +0100, Tomasz Figa wrote:
Hi KyongHo,
On 14.03.2014 06:06, Cho KyongHo wrote:
This patch adds dts entries for the System MMU devices found on
Exynos4 and Exynos5 SoC series and the System MMU binding
documentation.
CC: Rob Herring robherri...@gmail.com
> From: Sachin Kamat [mailto:sachin.ka...@linaro.org]
> Sent: Friday, March 14, 2014 7:00 PM
>
> On 14 March 2014 10:31, Cho KyongHo wrote:
> > Commit 25e9d28d92 (ARM: EXYNOS: remove system mmu initialization from
> > exynos tree) removed arch/arm/mach-exynos/mach
From: Sachin Kamat [mailto:sachin.ka...@linaro.org]
Sent: Friday, March 14, 2014 7:00 PM
On 14 March 2014 10:31, Cho KyongHo pullip@samsung.com wrote:
Commit 25e9d28d92 (ARM: EXYNOS: remove system mmu initialization from
exynos tree) removed arch/arm/mach-exynos/mach/sysmmu.h header
Some redundant error message is removed and some error messages
are changed to error level from debug level.
Signed-off-by: Cho KyongHo
---
drivers/iommu/exynos-iommu.c | 23 +--
1 file changed, 9 insertions(+), 14 deletions(-)
diff --git a/drivers/iommu/exynos-iommu.c b
This commit changes the function to get MMU version simpler.
Signed-off-by: Cho KyongHo
---
drivers/iommu/exynos-iommu.c | 30 ++
1 file changed, 6 insertions(+), 24 deletions(-)
diff --git a/drivers/iommu/exynos-iommu.c b/drivers/iommu/exynos-iommu.c
index
ntries.
This is the size between 256K ~ 384K.
Signed-off-by: Cho KyongHo
---
drivers/iommu/exynos-iommu.c | 164 +-
1 file changed, 147 insertions(+), 17 deletions(-)
diff --git a/drivers/iommu/exynos-iommu.c b/drivers/iommu/exynos-iommu.c
index 3d4dabb..4888383
This commit introduces sysmmu_pte_t for page table entries and
sysmmu_iova_t vor I/O virtual address that is manipulated by
exynos-iommu driver. The purpose of the typedef is to remove
dependencies to the driver code from the change of CPU architecture
from 32 bit to 64 bit.
Signed-off-by: Cho
Use of __pa and __va macro is changed to virt_to_phys and phys_to_virt
which are recommended in driver code. printk formatting of physical
address is also fixed to %pa.
Signed-off-by: Cho KyongHo
---
drivers/iommu/exynos-iommu.c | 45 +++---
1 file changed
Patch written by Antonios Motakis :
IOMMU groups are expected by certain users of the IOMMU API,
e.g. VFIO. Since each device is behind its own System MMU, we
can allocate a new IOMMU group for each device.
Reviewd-by: Cho KyongHo
Signed-off-by: Antonios Motakis
---
drivers/iommu/exynos
domain, its driver must
call iommu_attach_device() after its local power domain is turned on,
iommu_detach_device before turned off.
Signed-off-by: Cho KyongHo
---
drivers/iommu/exynos-iommu.c | 220 ++
1 file changed, 201 insertions(+), 19 deletions
Since acquiring read_lock is not more frequent than write_lock, it is
not beneficial to use rwlock, this commit changes rwlock to spinlock.
Reviewed-by: Grant Grundler
Signed-off-by: Cho KyongHo
---
drivers/iommu/exynos-iommu.c | 39 ---
1 file changed, 20
to master H/W and that has a pointer to the device descriptor of a
System MMU. Given a device descriptor of a master H/W, it is possible
to traverse all System MMUs that must be controlled along with the
master H/W.
Signed-off-by: Cho KyongHo
---
drivers/iommu/exynos-iommu.c | 534
exynos-iommu driver must care about master H/W's gate clock as well as
System MMU's gate clock. To enhance readability of the source code,
macros to gate/ungate those clocks are defined.
Signed-off-by: Cho KyongHo
---
drivers/iommu/exynos-iommu.c | 34 ++
1
1 - 100 of 538 matches
Mail list logo
