[PATCH v2 0/8] Add Keystone PCIe controller driver

Mohit KUMAR DCG Mohit.KUMAR at st.com
Wed Jun 18 03:14:28 PDT 2014

Hello Murali,

> -----Original Message-----
> From: Murali Karicheri [mailto:m-karicheri2 at ti.com]
> Sent: Wednesday, June 11, 2014 12:21 AM
> To: linux-arm-kernel at lists.infradead.org; linux-kernel at vger.kernel.org;
> linux-pci at vger.kernel.org; devicetree at vger.kernel.org; linux-
> doc at vger.kernel.org
> Cc: Murali Karicheri; Santosh Shilimkar; Russell King; Grant Likely; Rob Herring;
> Mohit KUMAR DCG; Jingoo Han; Bjorn Helgaas; Pratyush ANAND; Richard
> Zhu; Kishon Vijay Abraham I; Marek Vasut; Arnd Bergmann; Pawel Moll;
> Mark Rutland; Ian Campbell; Kumar Gala; Randy Dunlap
> Subject: [PATCH v2 0/8] Add Keystone PCIe controller driver
> This patch adds a PCIe controller driver for Keystone SoCs. This is based on v1
> of the series posted to the mailing list.

1. I think your first patch is OK which handles platform specific ATU implementation.

2. For MSI part, I think you just need to add two new callbacks with pp-ops, something similar to:

With these two platform specific callbacks you should be able to manage MSI handling.
So idea is that dw_msi code uses pp->ops->msi_set/clear if platform define these,
otherwise use dw_msi_set/clear (which you need to refactor from existing code)

So other than your keystone changes we expect 3 patches:
--  1st same as you sent 1/8: for ATU handeling
-- 2nd to refactor dw_msi_set/clear: refactor from existing code
-- 3rd to use pp->ops->msi_set/clear if defined.

Pls let us know for any issue or have different opinion.


> --

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