linux-kernel - Re: Smartmedia/xd card support

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: <alpine.LFD.1.10.0804171121580.3261@apollo.tec.linutronix.de>
Date:	Thu, 17 Apr 2008 15:35:28 +0200 (CEST)
From:	Thomas Gleixner <tglx@...utronix.de>
To:	Alex Dubov <oakad@...oo.com>
cc:	Linux kernel mailing list <linux-kernel@...r.kernel.org>
Subject: Re: Smartmedia/xd card support - request for comments

On Thu, 17 Apr 2008, Alex Dubov wrote:

> I've implemented, with generous help from JMicron, a native support
> for Smartmedia/xD picture card media. Currently, only JMicron
> backend is available, but TI expressed some interest in this too, so
> TI Flashmedia backend may soon follow.

> Smartmedia cards are quite akin to the dumb flash chips, but they
> have their quirks that put them aside as a separate media type.

Smartmedia cards _ARE_ dumb NAND flash chips in a thin plastic cover
with gold contacts. The access to those cards is supported in the mtd
subsystem since ages. Why are you trying to reinvent the wheel ?

The only missing piece is the FTL layer, but there was a halfways
working version in the old mtd CVS which should be still available.

> management of flash memory. I studied the mtd layer, but found it to
> be not very helpful, so I wrote my own FTL module.

Err, why is MTD not helpful ? It covers all the low level access to
the NAND Flash and has a flexible interface to adapt to hardware.

We really do not need a second incarnation of NAND flash software in
the kernel.

Thanks,
	tglx

--
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@...r.kernel.org
More majordomo info at  http://vger.kernel.org/majordomo-info.html
Please read the FAQ at  http://www.tux.org/lkml/