memory.h
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上传日期:2009-04-28
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文件大小:1k
- /*
- * linux/include/asm-arm/arch-iop3xx/memory.h
- */
- #ifndef __ASM_ARCH_MEMORY_H
- #define __ASM_ARCH_MEMORY_H
- #include <linux/config.h>
- #include <asm/hardware.h>
- /*
- * Physical DRAM offset.
- */
- #ifndef CONFIG_ARCH_IOP331
- #define PHYS_OFFSET (0xa0000000UL)
- #else
- #define PHYS_OFFSET (0x00000000UL)
- #endif
- /*
- * Virtual view <-> PCI DMA view memory address translations
- * virt_to_bus: Used to translate the virtual address to an
- * address suitable to be passed to set_dma_addr
- * bus_to_virt: Used to convert an address for DMA operations
- * to an address that the kernel can use.
- */
- #if defined(CONFIG_ARCH_IOP321)
- #define __virt_to_bus(x) (((__virt_to_phys(x)) & ~(*IOP321_IATVR2)) | ((*IOP321_IABAR2) & 0xfffffff0))
- #define __bus_to_virt(x) (__phys_to_virt(((x) & ~(*IOP321_IALR2)) | ( *IOP321_IATVR2)))
- #elif defined(CONFIG_ARCH_IOP331)
- #define __virt_to_bus(x) (((__virt_to_phys(x)) & ~(*IOP331_IATVR2)) | ((*IOP331_IABAR2) & 0xfffffff0))
- #define __bus_to_virt(x) (__phys_to_virt(((x) & ~(*IOP331_IALR2)) | ( *IOP331_IATVR2)))
- #endif
- #endif