linux-dev - Linux kernel development work

Age	Commit message (Collapse)	Author	Files	Lines
2009-05-09	sh: Rename opcode_t to insn_size_t.	Paul Mundt	1	-1/+1
	This is now clashing with a driver, so just rename it. Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2009-04-02	sh: Add a command line option for disabling I/O trapping.	Paul Mundt	1	-0/+13
	This adds a 'noiotrap' kernel command line option to permit disabling of I/O trapping. This is mostly useful for running on emulators where the physical device limitations are not an issue. Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2008-03-06	sh: Fix up section mismatches.	Paul Mundt	1	-1/+1
	Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2008-02-14	sh: Symbol exports for trapped I/O.	Paul Mundt	1	-0/+5
	Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2008-02-14	sh: Use max_t in io_trapped.	Paul Mundt	1	-3/+5
	Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2008-02-14	sh: trapped io support V2	Magnus Damm	1	-0/+269
	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>