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Date:      Mon, 07 Apr 2025 13:23:54 +0900
From:      Jaeyoon Choi <j_yoon.choi@samsung.com>
To:        Julian Elischer <julian@freebsd.org>, Jaeyoon Choi <j_yoon.choi@samsung.com>
Cc:        Warner Losh <imp@bsdimp.com>, "freebsd-hackers@FreeBSD.org" <freebsd-hackers@freebsd.org>
Subject:   Re: Universal Flash Storage Driver Proposal
Message-ID:  <20250407042354epcms2p84ab6cfcaad55ddd7fad801232ca76c46@epcms2p8>
In-Reply-To: <49b8a3c9-971c-4211-b49b-e10ab3ecc699@freebsd.org>
References:  <49b8a3c9-971c-4211-b49b-e10ab3ecc699@freebsd.org> <20250314052853epcms2p77524d50719009d62188486032c30f6c5@epcms2p7> <CA%2B%2BEBuD%2B=YD_j14BdMrw=V07fZH1cS7gy8TX90eU0BeNSfkeHg@mail.gmail.com> <CGME20250314052853epcms2p77524d50719009d62188486032c30f6c5@epcms2p8>

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> On 4/6/25 8:33 PM, Justin Parrott wrote:
> 
> I wrote a UFS driver for Facebook a few years back.. I would have 
> loved to move it to FreeBSD but never did. (2018)  I don't remember 
> the details now but once the register banging was done the existing 
> SCSI code just ran through it.  (It was a pririetary OS based on 
> Google'e Fucshia OS.)

I didn't realize you also developed a UFS driver for Fuchsia OS on Facebook.
I'm working on a UFS driver for Google Fuchsia OS:
https://cs.opensource.google/fuchsia/fuchsia/+/main:src/devices/block/drivers/ufs/
It's really nice to meet someone who has done the same thing.
 
> I'd be happy to review if let me know when there is stuff to look at.
> (also if you have issues interpreting the spec.. I may have some 
> memories on what I did.)
> 
> Julian

The FreeBSD UFSHCI driver is in early implementation right now,
so I'll be able to ask for a review at the end of May.
I'm new to FreeBSD, so I might be a bit clumsy.
Thanks for any advice.

Thanks,
Jaeyoon



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