[parisc-linux] Re: PA7200 smp pb on d380 [Continue: May be ccio-dma also?]

[parisc-linux] Re: PA7200 smp pb on d380 [Continue: May be ccio-dma also?]

[Grant Grundler]

On Fri, Oct 14, 2005 at 07:37:16AM +0200, Joel Soete wrote:
> > sr0?
> > The above change was for %r0, not %sr0.
> > Or can you point out exactly what you are referring to?
>
> Ah it was so a good question :=)
> let see so the first:
> RCS file: /var/lib/cvs/linux-2.6/drivers/parisc/ccio-dma.c,v
> retrieving revision 1.24
> retrieving revision 1.25
> diff -u -r1.24 -r1.25
> --- linux-2.6/drivers/parisc/ccio-dma.c	2005/09/11 19:47:11	1.24
> +++ linux-2.6/drivers/parisc/ccio-dma.c	2005/10/12 15:25:21	1.25
> @@ -613,7 +613,7 @@
>  	** the real mode coherence index generation of U2, the PDIR entry
>  	** must be flushed to memory to retain coherence."
>  	*/
> -	asm volatile("fdc 0(%0)" : : "r" (pdir_ptr));
> +	asm volatile("fdc %%r0(%%sr0,%0)" : : "r" (pdir_ptr));

Ah ok!

> (I agree that it was in my original proposal, you can blame me ...)

No. My bad. I should have known better.


> finaly (what confusing my tiny mind: your previous related patch just removed it):
> RCS file: /var/lib/cvs/linux-2.6/drivers/parisc/sba_iommu.c,v
> retrieving revision 1.39
> retrieving revision 1.40
> diff -u -r1.39 -r1.40
> --- linux-2.6/drivers/parisc/sba_iommu.c	2005/10/09 21:08:38	1.39
> +++ linux-2.6/drivers/parisc/sba_iommu.c	2005/10/12 15:30:28	1.40
> @@ -743,9 +743,8 @@
>  	 * (bit #61, big endian), we have to flush and sync every time
>  	 * IO-PDIR is changed in Ike/Astro.
>  	 */
> -	if (ioc_needs_fdc) {
> -		asm volatile("fdc %%r0(%0)\n\tsync" : : "r" (pdir_ptr));
> -	}
> +	if (ioc_needs_fdc)
> +		asm volatile("fdc %%r0(%%sr0,%0)" : : "r" (pdir_ptr));
>  }
> 
> 
> ====<>====
> (why I said 'resurected')

ok - I'll remove that as well. I suspect that crept in when
I switch machines and didn't properly sync the source trees.

thanks,
grant
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