Re: HPMC bus timeout on C3600

[Grant Grundler <grundler@parisc-linux.org>]

On Sat, Dec 20, 2008 at 05:21:00PM -0500, Kyle McMartin wrote:
> On Sat, Dec 20, 2008 at 05:16:53PM -0500, Kyle McMartin wrote:
> > you can try hacking elroy to set softfail mode on that bus, which will
> > result in a timeout on the pci bus to return -1 (like what x86 and most
> > other architectures do) rather than hang the box, but it really likely
> > means a driver bug.
> 
> untested and all that jazz.
> 
> diff --git a/drivers/parisc/lba_pci.c b/drivers/parisc/lba_pci.c
> index a28c894..a34f759 100644
> --- a/drivers/parisc/lba_pci.c
> +++ b/drivers/parisc/lba_pci.c
> @@ -1341,7 +1341,7 @@ lba_hw_init(struct lba_device *d)
>  
>  	/* Set HF mode as the default (vs. -1 mode). */
>          stat = READ_REG32(d->hba.base_addr + LBA_STAT_CTL);
> -	WRITE_REG32(stat | HF_ENABLE, d->hba.base_addr + LBA_STAT_CTL);
> +	WRITE_REG32(stat & ~HF_ENABLE, d->hba.base_addr + LBA_STAT_CTL);

I'm not sure how helpful this will be. It will be unpredictable how
the tulip driver will handle getting -1's back from inw().

thanks,
grant

>  
>  	/*
>  	** Writing a zero to STAT_CTL.rf (bit 0) will clear reset signal
> --
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