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

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Date:	Wed, 7 Jan 2015 18:05:51 -0500
From:	Murali Karicheri <m-karicheri2@...com>
To:	Murali Karicheri <m-karicheri2@...com>, <bhelgaas@...gle.com>
CC:	<joro@...tes.org>, <grant.likely@...aro.org>, <robh+dt@...nel.org>,
	<iommu@...ts.linux-foundation.org>, <linux-kernel@...r.kernel.org>,
	<devicetree@...r.kernel.org>, <linux-pci@...r.kernel.org>,
	<linux-arm-kernel@...ts.infradead.org>, <will.deacon@....com>,
	<linux@....linux.org.uk>, <arnd@...db.de>
Subject: Re: [PATCH v3 0/4] PCI: get DMA configuration from parent device

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@vger.kernel.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?

Thanks
-- 
Murali Karicheri
Linux Kernel, Texas Instruments
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