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Re: Re: Port of 82559 ethernet driver for PC target (was: "RE: New bie Question!")
- To: Fabrice Gautier <Fabrice_Gautier at sdesigns dot com>
- Subject: Re: [ECOS] Re: Port of 82559 ethernet driver for PC target (was: "RE: [ECOS] New bie Question!")
- From: Andrew Lunn <andrew dot lunn at ascom dot ch>
- Date: Thu, 5 Oct 2000 09:48:00 +0200
- Cc: eCos Disuss <ecos-discuss at sourceware dot cygnus dot com>
- References: <8AE4B526B977D411841F00A0CC334020052C82@cuz-exchange.sdesigns.net>
> The good news is that the i386 port of eCos doesn't seem to have the cache
> enabled.
!?! That will be killing performance realy badly. I suggest someone
fixes this.
> The DMA? I'm not sure but I don't see any programming of a DMA controller in
> the existing driver.
You don't explicitly program the DMA, but the ethernet card has a DMA
in it. It DMAs the frame into the DRAM.
> And Anyway, I will assume there is nothing to worry about... and we will
> see.
You are probably right.
Andrew