linux-kernel - Re: [PATCH V2 0/5] Add support to defer core initialization

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]

Message-ID: <ca911119-da45-4cbd-b173-2ac8397fd79a@ti.com>
Date:   Thu, 23 Jan 2020 15:25:53 +0530
From:   Kishon Vijay Abraham I <kishon@...com>
To:     Vidya Sagar <vidyas@...dia.com>
CC:     <jingoohan1@...il.com>, <gustavo.pimentel@...opsys.com>,
        <lorenzo.pieralisi@....com>, <andrew.murray@....com>,
        <bhelgaas@...gle.com>, <thierry.reding@...il.com>,
        <Jisheng.Zhang@...aptics.com>, <jonathanh@...dia.com>,
        <linux-pci@...r.kernel.org>, <linux-kernel@...r.kernel.org>,
        <kthota@...dia.com>, <mmaddireddy@...dia.com>, <sagar.tv@...il.com>
Subject: Re: [PATCH V2 0/5] Add support to defer core initialization

Hi Vidya Sagar,

On 23/01/20 2:54 pm, Vidya Sagar wrote:
> Hi Kishon,
> Apologies for pinging again. Could you please review this series?
> 
> Thanks,
> Vidya Sagar
> 
> On 1/11/2020 5:18 PM, Vidya Sagar wrote:
>> Hi Kishon,
>> Could you please review this series?
>>
>> Also, this series depends on the following change of yours
>> http://patchwork.ozlabs.org/patch/1109884/
>> Whats the plan to get this merged?

I've posted the endpoint improvements as a separate series
http://lore.kernel.org/r/20191231100331.6316-1-kishon@ti.com

I'd prefer this series gets tested by others. I'm also planning to test
this series. Sorry for the delay. I'll test review and test this series
early next week.

Thanks
Kishon

>>
>> Thanks,
>> Vidya Sagar
>>
>> On 1/3/20 3:37 PM, Vidya Sagar wrote:
>>> EPC/DesignWare core endpoint subsystems assume that the core
>>> registers are
>>> available always for SW to initialize. But, that may not be the case
>>> always.
>>> For example, Tegra194 hardware has the core running on a clock that
>>> is derived
>>> from reference clock that is coming into the endpoint system from host.
>>> Hence core is made available asynchronously based on when host system
>>> is going
>>> for enumeration of devices. To accommodate this kind of hardwares,
>>> support is
>>> required to defer the core initialization until the respective
>>> platform driver
>>> informs the EPC/DWC endpoint sub-systems that the core is indeed
>>> available for
>>> initiaization. This patch series is attempting to add precisely that.
>>> This series is based on Kishon's patch that adds notification mechanism
>>> support from EPC to EPF @ http://patchwork.ozlabs.org/patch/1109884/
>>>
>>> Vidya Sagar (5):
>>>    PCI: endpoint: Add core init notifying feature
>>>    PCI: dwc: Refactor core initialization code for EP mode
>>>    PCI: endpoint: Add notification for core init completion
>>>    PCI: dwc: Add API to notify core initialization completion
>>>    PCI: pci-epf-test: Add support to defer core initialization
>>>
>>>   .../pci/controller/dwc/pcie-designware-ep.c   |  79 +++++++-----
>>>   drivers/pci/controller/dwc/pcie-designware.h  |  11 ++
>>>   drivers/pci/endpoint/functions/pci-epf-test.c | 118 ++++++++++++------
>>>   drivers/pci/endpoint/pci-epc-core.c           |  19 ++-
>>>   include/linux/pci-epc.h                       |   2 +
>>>   include/linux/pci-epf.h                       |   5 +
>>>   6 files changed, 164 insertions(+), 70 deletions(-)
>>>