On Fri, Jul 02, 2010 at 12:09:02AM -0700, Zach Pfeffer wrote:
Hari Kanigeri wrote:
He demonstrated the usage of his code in one of the emails he sent out
initially. Did you go over that, and what (or how many) step would you
use with the current code to do the same thing?
-- So is this
On Thu, Jul 01, 2010 at 03:00:17PM -0700, Zach Pfeffer wrote:
Additionally, the current IOMMU interface does not allow users to
associate one page table with multiple IOMMUs [...]
Thats not true. Multiple IOMMUs are completly handled by the IOMMU
drivers. In the case of the IOMMU-API backend
On Fri, Jul 02, 2010 at 12:33:51AM -0700, Zach Pfeffer wrote:
Daniel Walker wrote:
So if we include this code which map implementations could you
collapse into this implementations ? Generally , what currently existing
code can VCMM help to eliminate?
In theory, it can eliminate all
On Thu, Jul 01, 2010 at 11:17:34PM -0700, Zach Pfeffer wrote:
Andi Kleen wrote:
Hmm? dma_map_* does not change any CPU mappings. It only sets up
DMA mapping(s).
Sure, but I was saying that iommu_map() doesn't just set up the IOMMU
mappings, its sets up both the iommu and kernel buffer
On Mon, Jul 12, 2010 at 10:21:05PM -0700, Zach Pfeffer wrote:
Joerg Roedel wrote:
The DMA-API already does this with the help of IOMMUs if they are
present. What is the benefit of your approach over that?
The grist to the DMA-API mill is the opaque scatterlist. Each
scatterlist element
the problem.
Cc: Laurent Pinchart laurent.pinch...@ideasonboard.com
Cc: linux-me...@vger.kernel.org
Cc: linux-omap@vger.kernel.org
Cc: linux-arm-ker...@lists.infradead.org
Cc: linux-ker...@vger.kernel.org
Signed-off-by: Joerg Roedel joerg.roe...@amd.com
---
drivers/media/video/omap3isp/ispccdc.c
...@wizery.com
Cc: io...@lists.linux-foundation.org
Cc: linux-ker...@vger.kernel.org
Signed-off-by: Joerg Roedel joerg.roe...@amd.com
---
drivers/iommu/Kconfig |4 ++--
drivers/media/video/Kconfig |3 +--
2 files changed, 3 insertions(+), 4 deletions(-)
diff --git a/drivers/iommu/Kconfig b
On Tue, Nov 08, 2011 at 02:57:02PM +0200, Ohad Ben-Cohen wrote:
Joerg, gentle reminder. thanks.
Just wanted to wait until -rc1 is out and I can start merging
new stuff :)
Joerg
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General
Add missing module.h include to provide THIS_MODULE.
Signed-off-by: Joerg Roedel joerg.roe...@amd.com
---
arch/arm/mach-omap2/cpuidle34xx.c |1 +
1 files changed, 1 insertions(+), 0 deletions(-)
diff --git a/arch/arm/mach-omap2/cpuidle34xx.c
b/arch/arm/mach-omap2/cpuidle34xx.c
index
On Tue, Nov 08, 2011 at 04:03:09PM +0200, Ohad Ben-Cohen wrote:
On Tue, Nov 8, 2011 at 4:01 PM, Joerg Roedel joerg.roe...@amd.com wrote:
On Tue, Nov 08, 2011 at 02:57:02PM +0200, Ohad Ben-Cohen wrote:
Joerg, gentle reminder. thanks.
Just wanted to wait until -rc1 is out and I can start
On Tue, Nov 08, 2011 at 06:29:15PM +0800, tom.leim...@gmail.com wrote:
From: Ming Lei tom.leim...@gmail.com
Fix the failure below:
Applied with a shorter commit-msg. Thanks.
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On Tue, Nov 08, 2011 at 09:36:48AM -0800, Kevin Hilman wrote:
Joerg Roedel joerg.roe...@amd.com writes:
Add missing module.h include to provide THIS_MODULE.
Signed-off-by: Joerg Roedel joerg.roe...@amd.com
FYI...
Tony has already queued fix for this in his fixes branch.
http
On Thu, Nov 10, 2011 at 08:16:16PM +0800, cody wrote:
On 11/10/2011 03:31 PM, Ohad Ben-Cohen wrote:
On Thu, Nov 10, 2011 at 8:17 AM, Kai Huangmail.kai.hu...@gmail.com wrote:
Seems the unmap function don't take phys as parameter, does this mean
domain-ops-unmap will walk through the page table
On Thu, Nov 10, 2011 at 10:35:34PM +0800, cody wrote:
Yes I totally agree page-size is not required for unmap operations
and should not be added as parameter to map/unmap operations. I am
not saying the unmap operation, but the IOTLB flush operation. My
point is we also may also need to add
On Thu, Nov 10, 2011 at 03:28:50PM +, David Woodhouse wrote:
Which brings me to another question I have been pondering... do we even
have a consensus on exactly *when* the IOTLB should be flushed?
Well, sort of, there is still the outstanding idea of the
iommu_commit() interface for the
On Thu, Nov 10, 2011 at 07:28:39PM +, David Woodhouse wrote:
... which implies that a mapping, once made, might *never* actually get
torn down until we loop and start reusing address space? That has
interesting security implications.
Yes, it is a trade-off between security and
Okay, seperate thread for this one.
On Thu, Nov 10, 2011 at 07:28:39PM +, David Woodhouse wrote:
The plan is to have a single DMA-API implementation for all IOMMU
drivers (X86 and ARM) which just uses the IOMMU-API. But to make this
performing reasonalbly well a few changes to the
On Thu, Nov 10, 2011 at 01:12:00PM -0800, Stepan Moskovchenko wrote:
I have been experimenting with an iommu_map_range call, which maps a
given scatterlist of discontiguous physical pages into a contiguous
virtual region at a given IOVA. This has some performance advantages
over just calling
On Fri, Nov 11, 2011 at 01:27:28PM +, David Woodhouse wrote:
On Fri, 2011-11-11 at 13:58 +0100, Joerg Roedel wrote:
For AMD IOMMU there is a feature called not-present cache. It says that
the IOMMU caches non-present entries as well and needs an IOTLB flush
when something is mapped
On Thu, Nov 10, 2011 at 11:32:24AM +0200, Ohad Ben-Cohen wrote:
Ohad Ben-Cohen (7):
iommu/core: stop converting bytes to page order back and forth
iommu/core: split mapping to page sizes as supported by the hardware
iommu/omap: announce supported page sizes
iommu/msm: announce
On Thu, Nov 24, 2011 at 01:52:33PM +0100, Marek Szyprowski wrote:
In my DMA-mapping IOMMU integration I've used a dma_iommu_mapping structure,
which contains a pointer to iommu domain, a bitmap and a lock. Maybe we
should consider extending iommu domain with allocation bitmap (or other
On Fri, Jun 15, 2012 at 08:55:58PM -0500, Omar Ramirez Luna wrote:
Omar Ramirez Luna (6):
ARM: OMAP: iommu: fix including iommu.h without IOMMU_API selected
ARM: OMAP3: hwmod data: add mmu data for iva and isp
ARM: OMAP4: hwmod data: add mmu hwmod for ipu and dsp
ARM: OMAP3/4: iommu:
On Mon, May 21, 2012 at 08:20:05PM +0300, Ohad Ben-Cohen wrote:
Sometimes a single IOMMU user may have to deal with several
different IOMMU devices (e.g. remoteproc).
When an IOMMU fault happens, such users have to regain their
context in order to deal with the fault.
Users can't use the
For better navigation this patch moves the drivers/iommu
drivers into its own submenu in Kconfig.
Signed-off-by: Joerg Roedel joerg.roe...@amd.com
---
drivers/iommu/Kconfig | 13 +
1 files changed, 13 insertions(+), 0 deletions(-)
diff --git a/drivers/iommu/Kconfig b/drivers/iommu
A few parts of the driver were missing in drivers/iommu.
Move them there to have the complete driver in that
directory.
Signed-off-by: Joerg Roedel joerg.roe...@amd.com
---
arch/x86/kernel/Makefile |1 -
drivers/iommu/Makefile |2
Okay, I applied the patches to move forward with them. On-top I also put
two additional patches which are sent as a follow-up to this mail.
These changes are at
git://git.kernel.org/pub/scm/linux/kernel/git/joro/iommu.git
in the core branch.
Thanks,
Joerg
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Cc: Joerg Roedel joerg.roe...@amd.com
---
v2: omap_find_iovm_area only returns NULL for errors. thanks, rmk
On Thu, Feb 23, 2012 at 06:16:59PM +0200, Ohad Ben-Cohen wrote:
On Thu, Feb 23, 2012 at 6:11 PM, Joerg Roedel joerg.roe...@amd.com wrote:
I guess these patches are 3.3 material?
Yes.
How about tagging them for stable too?
Good point. But it's only relevant for this 2nd patch (the NULL
On Thu, Feb 23, 2012 at 06:16:59PM +0200, Ohad Ben-Cohen wrote:
On Thu, Feb 23, 2012 at 6:11 PM, Joerg Roedel joerg.roe...@amd.com wrote:
I guess these patches are 3.3 material?
Yes.
How about tagging them for stable too?
Good point. But it's only relevant for this 2nd patch (the NULL
On Sun, Mar 04, 2012 at 12:01:11PM +0200, Ohad Ben-Cohen wrote:
For some weird (freudian?) reason, commit 435792d ARM: OMAP: make
iommu subsys_initcall to fix builtin omap3isp unintentionally changed
the mailbox's initcall instead of the iommu's.
Fix that.
Applied, thanks.
--
AMD
and internal iommu object. In order to
detach the users we need to track devices using the iommu, current
use cases only have one user of iommu per instance. When required
this can evolve to a list with the devices using the iommu_dev.
Reported-by: Joerg Roedel j...@8bytes.org
Reviewed-by: Ohad Ben
and internal iommu object. In order to
detach the users we need to track devices using the iommu, current
use cases only have one user of iommu per instance. When required
this can evolve to a list with the devices using the iommu_dev.
Reported-by: Joerg Roedel j...@8bytes.org
Reviewed-by: Ohad Ben
On Wed, Jan 11, 2012 at 03:28:11PM +0200, Ohad Ben-Cohen wrote:
omap3isp depends on CONFIG_IOMMU_API, so avoid registering its
device (and defining its configuration structs) on !CONFIG_IOMMU_API.
This is generally nice to have, but more importantly, it fixes:
On Fri, Jan 13, 2012 at 05:54:10PM +0200, Ohad Ben-Cohen wrote:
On Fri, Jan 13, 2012 at 1:07 PM, Joerg Roedel joerg.roe...@amd.com wrote:
Will apply it as soon as the merge window closes.
Though we might want to consider sending this to Linus before rc1, to
eliminate global developers' pain
On Wed, Jan 11, 2012 at 03:28:11PM +0200, Ohad Ben-Cohen wrote:
omap3isp depends on CONFIG_IOMMU_API, so avoid registering its
device (and defining its configuration structs) on !CONFIG_IOMMU_API.
This is generally nice to have, but more importantly, it fixes:
of the way of
iommu development.
Okay, from my side:
Acked-by: Joerg Roedel j...@8bytes.org
Please let me know which branch I need to pull into my tree when you
merged these patches.
Joerg
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On Fri, Mar 14, 2014 at 12:00:16PM +0100, Laurent Pinchart wrote:
Right, we indeed need two levels of API, one for drivers such as remoteproc
that need direct control of the IOMMU, and one for drivers that only need to
map buffers without any additional requirement. In the second case the
Hi Laurent,
On Tue, Apr 08, 2014 at 02:50:38PM +0200, Laurent Pinchart wrote:
I agree with you, the two levels are already present, but there's still rough
edges that we need to soften.
The ARM DMA API implementation requires someone to create the VA space
mapping
by calling
On Tue, Apr 08, 2014 at 05:02:37PM +0200, Laurent Pinchart wrote:
On Tuesday 08 April 2014 15:43:22 Joerg Roedel wrote:
Who is someone in this case?
That's exactly the problem :-) The ARM DMA API implementation doesn't care
who
that someone is. Existing implementations call those
Hi Laurent,
On Fri, Apr 04, 2014 at 12:11:52AM +0200, Laurent Pinchart wrote:
Laurent Pinchart (3):
iommu/omap: Fix 'no page for' debug message in flush_iotlb_page()
iommu/omap: Remove comment about supporting single page mappings only
iommu/omap: Fix map protection value
On Wed, Apr 16, 2014 at 04:51:56PM +0200, Laurent Pinchart wrote:
The following changes since commit c9eaa447e77efe77b7fa4c953bd62de8297fd6c5:
Linux 3.15-rc1 (2014-04-13 14:18:35 -0700)
are available in the git repository at:
git://linuxtv.org/pinchartl/media.git iommu/omap
for
On Mon, Jul 21, 2014 at 11:19:29PM -0700, Tony Lindgren wrote:
Tony, is there still time to get this (and especially patch 2/3, which
touches
arch/ code) in v3.17 ?
Yes as long as Joerg is OK to merge that branch in :)
Fine with me, I can take only patch 1 or all 3 into my arm/omap
On Wed, Jul 23, 2014 at 04:00:47PM +0200, Laurent Pinchart wrote:
Thank you. Assuming there's currently no conflict to be resolved, I believe
the easiest would be for both you and Tony to merge my branch in your trees.
Okay, I applied the patches to my arm/omap branch. I will push them out
On Thu, Sep 04, 2014 at 05:27:28PM -0500, Suman Anna wrote:
Suman Anna (2):
iommu/omap: Check for valid archdata in attach_dev
iommu/omap: Fix iommu archdata name for DT-based devices
drivers/iommu/omap-iommu.c | 15 ++-
1 file changed, 14 insertions(+), 1 deletion(-)
On Tue, Sep 09, 2014 at 06:45:45PM +0300, Laurent Pinchart wrote:
The owner field is never set. Remove it.
Signed-off-by: Laurent Pinchart laurent.pinch...@ideasonboard.com
---
drivers/iommu/omap-iommu.c | 11 ---
drivers/iommu/omap-iommu.h | 1 -
2 files changed, 12 deletions(-)
On Tue, Oct 21, 2014 at 04:28:27PM -0500, Suman Anna wrote:
I am looking to refresh this series for 3.19, and this is the only patch
that may need some changes. Please let me know what your preference is,
and I can rework this patch if needed. Either way,
the plan is to not have an OMAP IOMMU
On Wed, Oct 22, 2014 at 05:22:18PM -0500, Suman Anna wrote:
Suman Anna (17):
iommu/omap: Remove refcount field from omap_iommu object
iommu/omap: Remove unused isr_priv field from omap_iommu
iommu/omap: Remove duplicate declarations
iommu/omap: Remove conditional definition of
On Tue, Jul 21, 2015 at 06:55:34PM -0500, Suman Anna wrote:
The patches are baselined on 4.2-rc3 + the recent OMAP IOMMU
cleanup series [1]. I will post the DTS patches separately to
allow Tony to pick them up independently.
From the discussion it looks like some more work is necessary here.
On Mon, Jul 20, 2015 at 05:33:22PM -0500, Suman Anna wrote:
Suman Anna (11):
Documentation: dt: Add #iommu-cells info to OMAP iommu bindings
iommu/omap: Remove all module references
iommu/omap: Move debugfs functions to omap-iommu-debug.c
iommu/omap: Protect omap-iopgtable.h against
On Thu, Aug 06, 2015 at 07:01:56PM +0100, Mark Brown wrote:
On Thu, Aug 06, 2015 at 12:00:47PM +0100, Build bot for Mark Brown wrote:
Today's linux-next fails to build an ARM allmodconfig with:
../drivers/iommu/omap-iommu-debug.c:138:2: error: void value not ignored as
it ought to be
On Fri, Oct 02, 2015 at 06:02:42PM -0500, Suman Anna wrote:
> Suman Anna (2):
> Documentation: dt: Update OMAP iommu bindings for DRA7 DSPs
> iommu/omap: Add support for configuring dsp iommus on DRA7xx
>
> .../devicetree/bindings/iommu/ti,omap-iommu.txt| 27 ++
>
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