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Re: [PATCH 01/11] hisi_sas: add v2 hw support for ECC and AXI bus fatal error

Started byZhangfei Gao <zhangfei.gao@gmail.com>
First post2016-11-16 02:50 +0100
Last post2016-11-23 10:20 +0100
Articles 3 — 2 participants

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  Re: [PATCH 01/11] hisi_sas: add v2 hw support for ECC and AXI bus  fatal error Zhangfei Gao <zhangfei.gao@gmail.com> - 2016-11-16 02:50 +0100
    Re: [PATCH 01/11] hisi_sas: add v2 hw support for ECC and AXI bus  fatal error John Garry <john.garry@huawei.com> - 2016-11-23 10:10 +0100
      Re: [PATCH 01/11] hisi_sas: add v2 hw support for ECC and AXI bus  fatal error Zhangfei Gao <zhangfei.gao@gmail.com> - 2016-11-23 10:20 +0100

#1523179 — Re: [PATCH 01/11] hisi_sas: add v2 hw support for ECC and AXI bus fatal error

FromZhangfei Gao <zhangfei.gao@gmail.com>
Date2016-11-16 02:50 +0100
SubjectRe: [PATCH 01/11] hisi_sas: add v2 hw support for ECC and AXI bus fatal error
Message-ID<sDXwl-4jR-17@gated-at.bofh.it>
On Mon, Nov 7, 2016 at 8:48 PM, John Garry <john.garry@huawei.com> wrote:
> From: Xiang Chen <chenxiang66@hisilicon.com>
>
> For ECC 1bit error, logic can recover it, so we only print
> a warning.
> For ECC multi-bit and AXI bus fatal error, we panic.

Is it possible to recover via resetting phy and device etc instead of panic?

Thanks

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#1528218

FromJohn Garry <john.garry@huawei.com>
Date2016-11-23 10:10 +0100
Message-ID<sGBIZ-2TX-17@gated-at.bofh.it>
In reply to#1523179
On 16/11/2016 01:47, Zhangfei Gao wrote:
> On Mon, Nov 7, 2016 at 8:48 PM, John Garry <john.garry@huawei.com> wrote:
>> From: Xiang Chen <chenxiang66@hisilicon.com>
>>
>> For ECC 1bit error, logic can recover it, so we only print
>> a warning.
>> For ECC multi-bit and AXI bus fatal error, we panic.
>
> Is it possible to recover via resetting phy and device etc instead of panic?
>
> Thanks
>
>


Hi Zhangfei,

We are actually now working on supporting controller reset for certain 
AXI/ECC errors, so that we will not need to panic.

Thanks,
John

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#1528230

FromZhangfei Gao <zhangfei.gao@gmail.com>
Date2016-11-23 10:20 +0100
Message-ID<sGBSF-2X2-1@gated-at.bofh.it>
In reply to#1528218
On Wed, Nov 23, 2016 at 4:59 PM, John Garry <john.garry@huawei.com> wrote:
> On 16/11/2016 01:47, Zhangfei Gao wrote:
>>
>> On Mon, Nov 7, 2016 at 8:48 PM, John Garry <john.garry@huawei.com> wrote:
>>>
>>> From: Xiang Chen <chenxiang66@hisilicon.com>

Reviewed-by: Zhangfei Gao <zhangfei.gao@linaro.org>

>>>
>>> For ECC 1bit error, logic can recover it, so we only print
>>> a warning.
>>> For ECC multi-bit and AXI bus fatal error, we panic.
>>
>>
>> Is it possible to recover via resetting phy and device etc instead of
>> panic?
>>
>> Thanks
>>
>>
>
>
> Hi Zhangfei,
>
> We are actually now working on supporting controller reset for certain
> AXI/ECC errors, so that we will not need to panic.

Got it, thanks for the info.

Thanks

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