Subject: Re: memory mapped device problem
To: Vikram <firstname.lastname@example.org>
From: Manuel Bouyer <email@example.com>
Date: 06/20/2000 13:00:15
On Tue, Jun 20, 2000 at 12:37:21PM +0530, Vikram wrote:
> Hello NetBSD gurus!!,
> I have a memory mapped network card. And I am map the memory and then
> access the memory using
> bus_space_write_4(sc->pm_memt, sc->pm_sh,..) the pm_memt and pm_sh are
> returned by pci_mapreg_map() which I uae for mapping the memory.
> Is every thing done properly? I hope so.
> Now the problem is after some while the whenever I try to read the
> registers they all give content as 0xffffffff . May I know the reason? Pls
Does this work properly at the beggining ? If so the check that the pm_memt
and pm_sh didn't change. Or it could just be that the board is wedged.
Manuel Bouyer, LIP6, Universite Paris VI. Manuel.Bouyer@lip6.fr