[PATCH 2/3][PPC32] PCI-X support for Yucca

[Eugene Surovegin]

On Mon, Oct 03, 2005 at 12:36:08PM +0400, Ruslan V. Sushko wrote:
> This patch adds PCIX support for Yucca PPC440SPe board. The patch is
> implemented for Roland Dreier git tree for Yucca PPC440SPe board.
> 
> Signed-off-by: Ruslan V. Sushko <rsushko at ru.mvista.com>

[snip]

> +                mtdcr(DCRN_UIC_PR(UIC1), 
> +                mfdcr(DCRN_UIC_PR(UIC1)) & ~0x00004000); /* Set PCI interrupt
> +                                                            (EXT IRQ12) plarity
> +                                                            to Negative */

Don't mess with UIC registers directly. Take a look how this type of 
setup is done in other 4xx ports (e.g. Ebony) and use the same 
approach (hint: ppc4xx_uic_ext_irq_cfg).

-- 
Eugene