From b5ee9002583fc14e6d45a04c18f208987a8fbced Mon Sep 17 00:00:00 2001 From: Nicolas Pitre Date: Fri, 5 Sep 2008 21:53:30 -0400 Subject: [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 Signed-off-by: Russell King --- arch/arm/plat-omap/include/mach/memory.h | 17 +++-------------- 1 file changed, 3 insertions(+), 14 deletions(-) (limited to 'arch/arm/plat-omap') diff --git a/arch/arm/plat-omap/include/mach/memory.h b/arch/arm/plat-omap/include/mach/memory.h index d40cac60b95..211c9f6619e 100644 --- a/arch/arm/plat-omap/include/mach/memory.h +++ b/arch/arm/plat-omap/include/mach/memory.h @@ -42,19 +42,8 @@ #define PHYS_OFFSET UL(0x80000000) #endif -/* - * Conversion between SDRAM and fake PCI bus, used by USB - * NOTE: Physical address must be converted to Local Bus address - * on OMAP-1510 only - */ - /* * Bus address is physical address, except for OMAP-1510 Local Bus. - */ -#define __virt_to_bus(x) __virt_to_phys(x) -#define __bus_to_virt(x) __phys_to_virt(x) - -/* * OMAP-1510 bus address is translated into a Local Bus address if the * OMAP bus type is lbus. We do the address translation based on the * device overriding the defaults used in the dma-mapping API. @@ -74,16 +63,16 @@ #define __arch_page_to_dma(dev, page) ({is_lbus_device(dev) ? \ (dma_addr_t)virt_to_lbus(page_address(page)) : \ - (dma_addr_t)__virt_to_bus(page_address(page));}) + (dma_addr_t)__virt_to_phys(page_address(page));}) #define __arch_dma_to_virt(dev, addr) ({ (void *) (is_lbus_device(dev) ? \ lbus_to_virt(addr) : \ - __bus_to_virt(addr)); }) + __phys_to_virt(addr)); }) #define __arch_virt_to_dma(dev, addr) ({ unsigned long __addr = (unsigned long)(addr); \ (dma_addr_t) (is_lbus_device(dev) ? \ virt_to_lbus(__addr) : \ - __virt_to_bus(__addr)); }) + __virt_to_phys(__addr)); }) #endif /* CONFIG_ARCH_OMAP15XX */ -- cgit v1.2.3