kernel_optimize_test/arch/sh
Magnus Damm e7cc9a7340 sh: trapped io support V2
The idea is that we want to get rid of the in/out/readb/writeb callbacks from
the machvec and replace that with simple inline read and write operations to
memory. Fast and simple for most hardware devices (think pci).

Some devices require special treatment though - like 16-bit only CF devices -
so we need to have some method to hook in callbacks.

This patch makes it possible to add a per-device trap generating filter. This
way we can get maximum performance of sane hardware - which doesn't need this
filter - and crappy hardware works but gets punished by a performance hit.

V2 changes things around a bit and replaces io access callbacks with a
simple minimum_bus_width value. In the future we can add stride as well.

Signed-off-by: Magnus Damm <damm@igel.co.jp>
Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2008-02-14 14:22:09 +09:00
..
boards sh: migor board support 2008-02-14 14:22:08 +09:00
boot sh: Fix up KERNEL_ENTRY calculation for uImage. 2008-01-28 13:19:01 +09:00
cchips sh: remove voyagergx 2008-01-28 13:19:03 +09:00
configs sh: update r2d defconfigs with usb, spi and rtc 2008-02-14 14:22:09 +09:00
drivers sh: remove unneeded cast 2008-02-14 14:22:07 +09:00
kernel sh: trapped io support V2 2008-02-14 14:22:09 +09:00
lib sh: Explicit alignment for PAGE_SIZE in copy/clear_page(). 2008-01-28 13:18:58 +09:00
lib64 sh: comment tidying for sh64->sh migration. 2008-01-28 13:18:58 +09:00
math-emu sh: Fix up the math-emu build. 2007-06-11 15:57:42 +09:00
mm sh: trapped io support V2 2008-02-14 14:22:09 +09:00
oprofile sh: Add -Werror for clean directories. 2007-11-07 11:13:55 +09:00
tools sh: Add mach-type entries for MigoR and SDK7780. 2008-02-14 14:22:08 +09:00
Kconfig sh: trapped io support V2 2008-02-14 14:22:09 +09:00
Kconfig.cpu sh: Use def_bool where possible. 2008-01-28 13:19:00 +09:00
Kconfig.debug sh: add sh7722 support to EARLY_SCIF_CONSOLE 2008-02-14 14:22:07 +09:00
Makefile sh: migor board support 2008-02-14 14:22:08 +09:00