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Date:      Fri, 16 Aug 2002 06:59:39 -0600 (MDT)
From:      "M. Warner Losh" <imp@bsdimp.com>
To:        bms@spc.org
Cc:        freebsd-mobile@freebsd.org
Subject:   Re: Linear flash card support?
Message-ID:  <20020816.065939.48141213.imp@bsdimp.com>
In-Reply-To: <20020816074039.GA24605@spc.org>
References:  <20020816074039.GA24605@spc.org>

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In message: <20020816074039.GA24605@spc.org>
            Bruce M Simpson <bms@spc.org> writes:
: Has anybody revisited the subject of linear flash/sram card support?

Not in years.

: I seem to see an old thread from 2000. Cut a long story short, I have
: a need to write to such devices.

I see.

: I could hack together a lame, blocking, character device with a few
: non-standard ioctls to be able to write to the card quickly using dd,
: that's all I need right now.

Need hot-swap?

Outline of what to hack:

1) hack the pcic bridge code to not reject memory cards (linear flash
   show up as memory cards, at least the ones I have do).
2) hack the pcic bridge code to do the right thing wrt memory cards.
3) write a client driver.

1 & 2 may be hard, but #3 shouldn't be too bad if you have decent docs
for your linear cards.

Warner

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