Re: rts7751r2d cf_ide rework

[Magnus D. <mag...@gm...>]

On Sep 21, 2007 3:07 PM, Paul Mundt <le...@li...> wrote:
> On Sat, Sep 15, 2007 at 11:00:46AM +0900, shinkoi2005 wrote:
> >  > Is the libata code working properly with 8 bit reads? Is this patch
> >  > all it takes to get CF working on R2D-1?
> >
> > At least, cf_ide_resources[](register map) is also incorrect with R2D-PLUS.
> > Please check follow kernel which support P2D-PLUS and AT/PC arch's ATA register map.
> > <http://www.superh-linux.org/archive/bsp/sh7751r_r2d/linux-2.6.14.4-R2D+_20060906.tar.bz2>
> > R2D* board's ide register map is compatible without register access size.
> >
> > Here is the same patch...
> > I can boot R2D-1 from IDE's rootfs with this patch.
> >
> I suppose we can do this, I'll tidy up the patch a bit and apply it,
> thanks. It's probably worth doing the same thing for R7780RP, at least
> for the 2 or 3 people that have one of those antiquated things :-)

I happen to have two of these R2D-1 boards and I can't get CF working
using the latest kernel (latest sh-2.6 git, post 2.6.24-rc1) :

...
irq 107: nobody cared (try booting with the "irqpoll" option)
[stack dump]
[call trace]
handlers:
[<8c24f660>] (ata_interrupt+0x0/0x240)
Disabling IRQ #107
...

I can get things working by hacking in code to enable polling in
pata_platform.c though, so I assume that the IO-ports are ok.

The CF seems just fine on my R2D-PLUS board. CF on R2D-1 is broken for me.

/ magnus