On 28 Μαϊ 2008, at 11:36 ΠΜ, Haavard Skinnemoen wrote:
Benjamin Herrenschmidt <[EMAIL PROTECTED]> wrote:
I'm happy to say that __raw is purely about ordering and make them
byteswap on powerpc tho (ie, make them little endian like the non-
raw
counterpart).
That would break a lot of drivers.
How many actually use __raw_ * ?
I do -- in all the drivers for on-chip peripherals that are shared
between AT91 ARM (LE) and AVR32 (BE). Since everything goes on inside
the chip, we must use LE accesses on ARM and BE accesses on AVR32.
Currently, this is the only interface I know that can do native-endian
accesses, so if you take it away, I'm gonna need an alternative
interface that doesn't do byteswapping.
Haavard
I certainly do too.
Quite a lot of SoC specific drivers use __raw for accessing their
on-chip peripherals.
Please don't change the __raw semantics, you'll end up breaking almost
everything that's BE.
-- Pantelis
_______________________________________________
Linuxppc-dev mailing list
Linuxppc-dev@ozlabs.org
https://ozlabs.org/mailman/listinfo/linuxppc-dev
