Re: [PATCH v3 0/4] PCI: get DMA configuration from parent device

Murali Karicheri
2015-01-08T15:52:36Z

On 01/07/2015 06:08 PM, Bjorn Helgaas wrote:
> On Wed, Jan 7, 2015 at 5:05 PM, Murali Karicheri<m-karicheri2-l0cyMroinI0@public.gmane.org> wrote:
>> On 01/07/2015 01:49 PM, Murali Karicheri wrote:
>>>
>>> PCI devices on Keystone doesn't have correct dma_pfn_offset set. This
>>> patch
>>> add capability to set the dma configuration such as dma-mask,
>>> dma_pfn_offset,
>>> and dma ops etc using the information from DT. The prior RFCs and
>>> discussions
>>> are available at [1] and [2] below.
>>>
>>> [2] :
>>> https://www.mail-archive.com/linux-kernel-u79uwXL29TY76Z2rM5mHXA@public.gmane.org/msg790244.html
>>> [1] : http://www.gossamer-threads.com/lists/linux/kernel/2024591
>>>
>>> Change history:
>>> v3 - addressed comments to re-use of_dma_configure() for PCI
>>> - To help re-use, change of_iommu_configure() function argument
>>> - Move of_dma_configure to of/device.c
>>> - Limit the of_iommu_configure to non pci devices
>>> v2 - update size to coherent_dma_mask + 1 if dma-range info is
>>> missing
>>> - also check the np for null.
>>> v1 - updates based on the comments against initial RFC.
>>> - Added a helper function to get the OF node of the parent
>>> - Added an API in of_pci.c to update DMA configuration of the
>>> pci
>>> device.
>>>
>>> Murali Karicheri (4):
>>> of: iommu: add ptr to OF node arg to of_iommu_configure()
>>> of: move of_dma_configure() to device,c to help re-use
>>> of/pci: add of_pci_dma_configure() update dma configuration
>>> PCI: update dma configuration from DT
>>>
>>> drivers/iommu/of_iommu.c | 10 ++++++--
>>> drivers/of/device.c | 58
>>> +++++++++++++++++++++++++++++++++++++++++++++
>>> drivers/of/of_pci.c | 39 ++++++++++++++++++++++++++++++
>>> drivers/of/platform.c | 58
>>> ++-------------------------------------------
>>> drivers/pci/probe.c | 2 ++
>>> include/linux/of_device.h | 2 ++
>>> include/linux/of_iommu.h | 6 +++--
>>> include/linux/of_pci.h | 12 ++++++++++
>>> 8 files changed, 127 insertions(+), 60 deletions(-)
>>>
>> Bjorn,
>>
>> Could you review this series from the PCI subsystem point of view?
>
> Will do, it's in my patchwork queue. I'm just returning after a
> couple weeks of vacation, during which I moved across the country, so
> it will take me a bit to catch up.
>
> Bjorn
Bjorn,

Thanks and Happy New year!

--
Murali Karicheri
Linux Kernel, Texas Instruments
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