linux-kernel - Re: [PATCH V1 1/3] drivers/fpga/amd: Add new driver for AMD Versal PCIe card

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Message-ID: <f5994bad-afa1-4268-b631-0afcc7c8ce75@amd.com>
Date: Wed, 25 Dec 2024 22:10:06 -0800
From: Yidong Zhang <yidong.zhang@....com>
To: Xu Yilun <yilun.xu@...ux.intel.com>
CC: <linux-kernel@...r.kernel.org>, <linux-fpga@...r.kernel.org>,
	<mdf@...nel.org>, <hao.wu@...el.com>, <yilun.xu@...el.com>,
	<lizhi.hou@....com>, DMG Karthik <Karthik.DMG@....com>, Nishad Saraf
	<nishads@....com>, Prapul Krishnamurthy <prapulk@....com>
Subject: Re: [PATCH V1 1/3] drivers/fpga/amd: Add new driver for AMD Versal
 PCIe card



On 3/12/23 11:03, Xu Yilun wrote:
> Caution: This message originated from an External Source. Use proper caution when opening attachments, clicking links, or responding.
> 
> 
> On Sun, Dec 22, 2024 at 05:53:30PM -0800, Yidong Zhang wrote:
>>
>>
>> On 11/18/24 23:07, Xu Yilun wrote:
>>>
>>>>>> +obj-$(CONFIG_AMD_VERSAL_MGMT)                        += amd-vmgmt.o
>>>>> IMHO the naming vmgmt is hard to understand, any better idea?
>>>> The "v" stand for Versal. We would change to amd-vpci for Versal based pcie
>>> "v" + "pci" is quite a misleading term, maybe just versal-pci?
>>
>> Hi Yilun,
>>
>> I sent the V2 patch and refactored the driver as versal-pci now.
>> One more thing that I kept in V2 was the firmware_upload. I forgot to
>> mention that I'd love to switch to the newly proposed interface once
>> it is ready. I saw the proposal was now as config_fs and it was not merged
> 
> Good to know that.
> 
> I didn't start reviewing the v2 yet. But one thing is that now the
> versal-pci FPGA manager has no user because of the ongoing uAPI, so
> cannot be merged, and I won't pay much effort on this series for now.

Hi Yilun,

Can we add this as TODO in the future when the uAPI solution is ready to 
switch? We spent some time to refactor the driver and address most of 
your comments in the V2. Hopefully, can you please start reviewing the 
fpga_mgr and other driver code?

We'd think that we use the firmware_upload for 1st approach and start 
letting user use this driver.

We definitely will switch to the new uAPI as soon as it is ready in the 
linux fpga driver. But we'd not like this uAPI holds up everything we 
already spent times.

Thanks,
David
> 
> Thanks,
> Yilun
> 
>> yet.
>>
>> Happy Holidays.
>>
>> Thanks,
>> David