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40 lines
1.0 KiB
C
40 lines
1.0 KiB
C
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/*
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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 (0xa0000000UL)
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#else
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#define PHYS_OFFSET (0x00000000UL)
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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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