HowTo cache additional address space

[Nicolas Pitre]

On Wed, 2 Feb 2005, Konstantin Kletschke wrote:

> Am 2005-02-02 10:30 -0500 schrieb Nicolas Pitre:
> 
> > For MTD you need to add support for that in your map driver.  See the 
> > Lubbock map driver for example.
> 
> Is maps/xxx.c the only file which has to be adapted? Ok, I found lubbok
> myself and the ioremap.cached stuff in there...
> 
> I am curious if only the (succesful)
> 
> scb9328_map.cached = (unsigned long)__ioremap(scb9328_map.phys,
> SCB9328_FLASH_SIZE, 0, 0);
> or 
> scb9328_map.cached = ioremap_cached(scb9328_map.phys,
> SCB9328_FLASH_SIZE)
> 
> does the trick...

The __ioremap(..., 0, 0) is uncached.  You need to use the later.

But no, that's not enough.  You also need to provide an inval_cache 
method.


Nicolas