linux-kernel - Re: [PATCH v8 00/15] ACPI platform MSI support and its example mbigen

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Message-ID: <5895519F.2060608@huawei.com>
Date:   Sat, 4 Feb 2017 11:59:27 +0800
From:   Hanjun Guo <guohanjun@...wei.com>
To:     Sinan Kaya <okaya@...eaurora.org>,
        Marc Zyngier <marc.zyngier@....com>,
        "Rafael J. Wysocki" <rafael@...nel.org>,
        Lorenzo Pieralisi <lorenzo.pieralisi@....com>,
        Agustin Vega-Frias <agustinv@...eaurora.org>
CC:     <linux-acpi@...r.kernel.org>,
        <linux-arm-kernel@...ts.infradead.org>,
        <linux-kernel@...r.kernel.org>,
        Thomas Gleixner <tglx@...utronix.de>,
        Greg KH <gregkh@...uxfoundation.org>,
        Tomasz Nowicki <tn@...ihalf.com>, Ma Jun <majun258@...wei.com>,
        Kefeng Wang <wangkefeng.wang@...wei.com>,
        <huxinwei@...wei.com>, <yimin@...wei.com>, <linuxarm@...wei.com>,
        "Matthias Brugger" <mbrugger@...e.com>,
        Wei Xu <xuwei5@...ilicon.com>,
        Ming Lei <tom.leiming@...il.com>,
        Hanjun Guo <hanjun.guo@...aro.org>
Subject: Re: [PATCH v8 00/15] ACPI platform MSI support and its example mbigen

On 2017/2/3 22:50, Sinan Kaya wrote:
> On 1/18/2017 7:54 AM, Hanjun Guo wrote:
>> From: Hanjun Guo <hanjun.guo@...aro.org>
>>
>> With platform msi support landed in the kernel, and the introduction
>> of IORT for GICv3 ITS (PCI MSI) and SMMU, the framework for platform msi
>> is ready, this patch set add few patches to enable the ACPI platform
>> msi support.
>>
>> For platform device connecting to ITS on arm platform, we have IORT
>> table with the named componant node to describe the mappings of paltform
>> device and ITS, so we can retrieve the dev id and find its parent
>> irqdomain (ITS) from IORT table (simlar with the ACPI ITS support).
>>
> I understand that there is a consensus on IORT/SMMUv3 specific pieces
> of this series while there is some ongoing work on the MBIgen part in
> due to dependency on Agustin's patch vs. ACPI definitions.

I think both Agustin's patch set and my mbigen one are in good shape
now if I didn't miss something, Rafael and Lorenzo already acked Agustin's
patch [1-2/3], I provided my review and test tags on them.

And Lorenzo said about the mbigen patches:
"I think this patch (and the FW that goes with it) is wrong, but the rest
of the series, in particular the IORT bits, are ok with me."
and I fixed the wrong patch and updated the _PRS to _CRS as Lorenzo
suggested in v8.

So, can I kindly ask that those patches (Agustin's patch set and my mbigen one)
be merged to 4.11 please? It's really important for Hisilicon (Hip06/Hip07) SoCs
which native NIC [1], SAS [2], USB and even the console on Hip07-D05 drivers
depend on those patches, and those platform are completely dead without
them if PCI is not enabled...

Thanks
Hanjun

[1]: https://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/tree/drivers/net/ethernet/hisilicon/hns/
[2]: https://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/tree/drivers/scsi/hisi_sas/