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authorNicolas Pitre <nico@cam.org>2008-09-05 21:53:30 -0400
committerRussell King <rmk+kernel@arm.linux.org.uk>2008-11-28 10:36:49 -0500
commitb5ee9002583fc14e6d45a04c18f208987a8fbced (patch)
treec0202fd968667710643144e036d369eef874c655 /arch/arm/mach-sa1100
parent75f4aa15cf05ce6d99c8261cf57dcd749877fd1c (diff)
[ARM] remove a common set of __virt_to_bus definitions
Let's provide an overridable default instead of having every machine class define __virt_to_bus and __bus_to_virt to the same thing. What most platforms are using is bus_addr == phys_addr so such is the default. One exception is ebsa110 which has no DMA what so ever, so the actual definition is not important except only for proper compilation. Also added a comment about the special footbridge bus translation. Let's also remove comments alluding to set_dma_addr which is not (and should not) be commonly used. Signed-off-by: Nicolas Pitre <nico@marvell.com> Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
Diffstat (limited to 'arch/arm/mach-sa1100')
-rw-r--r--arch/arm/mach-sa1100/include/mach/memory.h12
1 files changed, 0 insertions, 12 deletions
diff --git a/arch/arm/mach-sa1100/include/mach/memory.h b/arch/arm/mach-sa1100/include/mach/memory.h
index 1c127b68581d..6984034f6958 100644
--- a/arch/arm/mach-sa1100/include/mach/memory.h
+++ b/arch/arm/mach-sa1100/include/mach/memory.h
@@ -28,18 +28,6 @@ void sa1111_adjust_zones(int node, unsigned long *size, unsigned long *holes);
28#endif 28#endif
29 29
30/* 30/*
31 * Virtual view <-> DMA view memory address translations
32 * virt_to_bus: Used to translate the virtual address to an
33 * address suitable to be passed to set_dma_addr
34 * bus_to_virt: Used to convert an address for DMA operations
35 * to an address that the kernel can use.
36 *
37 * On the SA1100, bus addresses are equivalent to physical addresses.
38 */
39#define __virt_to_bus(x) __virt_to_phys(x)
40#define __bus_to_virt(x) __phys_to_virt(x)
41
42/*
43 * Because of the wide memory address space between physical RAM banks on the 31 * Because of the wide memory address space between physical RAM banks on the
44 * SA1100, it's much convenient to use Linux's SparseMEM support to implement 32 * SA1100, it's much convenient to use Linux's SparseMEM support to implement
45 * our memory map representation. Assuming all memory nodes have equal access 33 * our memory map representation. Assuming all memory nodes have equal access