Some hosts cannot do scatter/gather in hardware. Since not doing sg is such a big performance hit, we (optionally) bounce the requests to a simple linear buffer that we hand over to the driver. Signed-off-by: Pierre Ossman <drzeus@drzeus.cx>
Remove dead code and unused structs from the block driver. Signed-off-by: Pierre Ossman <drzeus@drzeus.cx>
Clean up the drivers/mmc directory by moving card and host drivers into subdirectories. Signed-off-by: Pierre Ossman <drzeus@drzeus.cx>