Lennert Buytenhek 23759dc643 [ARM] 3439/2: xsc3: add I/O coherency support ... Patch from Lennert Buytenhek This patch adds support for the I/O coherent cache available on the xsc3. The approach is to provide a simple API to determine whether the chipset supports coherency by calling arch_is_coherent() and then setting the appropriate system memory PTE and PMD bits. In addition, we call this API on dma_alloc_coherent() and dma_map_single() calls. A generic version exists that will compile out all the coherency-related code that is not needed on the majority of ARM systems. Note that we do not check for coherency in the dma_alloc_writecombine() function as that still requires a special PTE setting. We also don't touch dma_mmap_coherent() as that is a special ARM-only API that is by definition only used on non-coherent system. Signed-off-by: Deepak Saxena <dsaxena@plexity.net> Signed-off-by: Lennert Buytenhek <buytenh@wantstofly.org> Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>		2006-04-02 00:07:39 +01:00
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debug-macro.S
dma.h
entry-macro.S
hardware.h
io.h
irqs.h
ixdp2351.h
ixp23xx.h
memory.h	[ARM] 3439/2: xsc3: add I/O coherency support	2006-04-02 00:07:39 +01:00
platform.h	[ARM] 3438/1: ixp23xx: add pci slave support	2006-04-01 18:33:35 +01:00
system.h
time.h
timex.h
uncompress.h
vmalloc.h