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f09b997999
Patch from Nicolas Pitre This patch allows for assorted type of cleanups by letting assembly code use the same set of defines for constant values and avoid duplicated definitions that might not always be in sync, or that might simply be confusing due to the different names for the same thing. Signed-off-by: Nicolas Pitre <nico@cam.org> Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
40 lines
1.0 KiB
C
40 lines
1.0 KiB
C
/*
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* linux/include/asm-arm/arch-iop3xx/memory.h
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*/
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#ifndef __ASM_ARCH_MEMORY_H
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#define __ASM_ARCH_MEMORY_H
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#include <linux/config.h>
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#include <asm/hardware.h>
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/*
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* Physical DRAM offset.
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*/
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#ifndef CONFIG_ARCH_IOP331
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#define PHYS_OFFSET UL(0xa0000000)
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#else
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#define PHYS_OFFSET UL(0x00000000)
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#endif
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/*
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* Virtual view <-> PCI DMA view memory address translations
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* virt_to_bus: Used to translate the virtual address to an
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* address suitable to be passed to set_dma_addr
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* bus_to_virt: Used to convert an address for DMA operations
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* to an address that the kernel can use.
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*/
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#if defined(CONFIG_ARCH_IOP321)
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#define __virt_to_bus(x) (((__virt_to_phys(x)) & ~(*IOP321_IATVR2)) | ((*IOP321_IABAR2) & 0xfffffff0))
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#define __bus_to_virt(x) (__phys_to_virt(((x) & ~(*IOP321_IALR2)) | ( *IOP321_IATVR2)))
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#elif defined(CONFIG_ARCH_IOP331)
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#define __virt_to_bus(x) (((__virt_to_phys(x)) & ~(*IOP331_IATVR2)) | ((*IOP331_IABAR2) & 0xfffffff0))
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#define __bus_to_virt(x) (__phys_to_virt(((x) & ~(*IOP331_IALR2)) | ( *IOP331_IATVR2)))
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#endif
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#endif
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