From: Thu Nguyen OS <thu@os.amperecomputing.com>
To: Joseph Reynolds <jrey@linux.ibm.com>,
"openbmc@lists.ozlabs.org" <openbmc@lists.ozlabs.org>
Subject: Re: The common solution to support bind/unbind the hwmon driver base on the host state.
Date: Fri, 2 Apr 2021 07:52:45 +0000 [thread overview]
Message-ID: <7843F2AF-30DE-4F78-B7C1-2BBDC99689B5@amperemail.onmicrosoft.com> (raw)
In-Reply-To: <12cb9e34-d110-1575-0b39-296083bd6410@linux.ibm.com>
I thought that OpenBmc community have to have the solution for this.
I can propose my solution but I don't think it is common enough.
Regards,
Thu Nguyen.
On 31/03/2021, 23:14, "Joseph Reynolds" <jrey@linux.ibm.com> wrote:
On 3/30/21 9:14 PM, Thu Nguyen OS wrote:
> Hi All, Currently, In Mtjade platform of Ampere, we have SMPro mdf
> drivers (SMPro hwmon, SMPro errmon, SMPro misc driver). The drivers
> will be loaded by kernel when the BMC boot up. But they are only
> binded when the host is already On.
>
> Hi All,
>
> Currently, In Mtjade platform of Ampere, we have SMPro mdf drivers
> (SMPro hwmon, SMPro errmon, SMPro misc driver).
>
> The drivers will be loaded by kernel when the BMC boot up. But they
> are only binded when the host is already On.
>
> They are also unbinded when the host is Off.
>
> To support binding/unbinding the SMPro drivesr, we have one service
> name driver-binder.
>
> 1. When the Dbus property CurrentHostState of service
> xyz.openbmc_project.State.Host changes to “not Off”, we will bind
> the drivers.
> 2. When the Dbus property RequestedHostTransition of service
> xyz.openbmc_project.State.Host OR Dbus property
> RequestedPowerTransition of xyz.openbmc_project.State.Chassis
>
> change to Off, we will unbind the drivers.
>
> The driver-binder is working as expected, it have the configuration
> file to configure which drivers will be binded/unbinded.
>
> But that is our solution.
>
> Do we have any common solution to do that job?
>
Thu,
I don't have a solution. But I do want to be able to bind and unbind
drivers for the BMC-attached USB ports (as the underlying mechanism when
the BMC admin disables the ports), so I think it would be good to have a
common solution or understand the best practices.
Joseph
> Regards.
>
> Thu Nguyen.
>
next prev parent reply other threads:[~2021-04-02 7:53 UTC|newest]
Thread overview: 10+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-03-31 2:14 The common solution to support bind/unbind the hwmon driver base on the host state Thu Nguyen OS
2021-03-31 16:14 ` Joseph Reynolds
2021-04-02 7:52 ` Thu Nguyen OS [this message]
2021-04-05 15:06 ` Matt Spinler
2021-04-05 15:17 ` Thu Nguyen OS
2021-04-05 16:20 ` Matt Spinler
2021-04-06 15:23 ` Thu Nguyen OS
2021-04-06 15:27 ` Matt Spinler
2021-04-05 16:32 ` Ed Tanous
2021-04-06 15:15 ` Thu Nguyen OS
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