65 lines
2.1 KiB
C
65 lines
2.1 KiB
C
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#ifndef __ASM_ARCH_MEMORY_H
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#define __ASM_ARCH_MEMORY_H
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#include <asm/arch/hardware.h>
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/*
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* Physical DRAM offset.
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*/
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#define PHYS_OFFSET UL(0x00000000)
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#define TASK_SIZE UL(0x3f000000)
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#define PAGE_OFFSET UL(0x40000000)
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#define TASK_UNMAPPED_BASE ((TASK_SIZE + 0x01000000) / 3)
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#ifndef __ASSEMBLY__
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#if defined(CONFIG_ARCH_IOP13XX)
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#define IOP13XX_PMMR_V_START (IOP13XX_PMMR_VIRT_MEM_BASE)
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#define IOP13XX_PMMR_V_END (IOP13XX_PMMR_VIRT_MEM_BASE + IOP13XX_PMMR_SIZE)
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#define IOP13XX_PMMR_P_START (IOP13XX_PMMR_PHYS_MEM_BASE)
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#define IOP13XX_PMMR_P_END (IOP13XX_PMMR_PHYS_MEM_BASE + IOP13XX_PMMR_SIZE)
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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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/* RAM has 1:1 mapping on the PCIe/x Busses */
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#define __virt_to_bus(x) (__virt_to_phys(x))
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#define __bus_to_virt(x) (__phys_to_virt(x))
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#define virt_to_lbus(x) \
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(( ((void*)(x) >= (void*)IOP13XX_PMMR_V_START) && \
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((void*)(x) < (void*)IOP13XX_PMMR_V_END) ) ? \
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((x) - IOP13XX_PMMR_VIRT_MEM_BASE + IOP13XX_PMMR_PHYS_MEM_BASE) : \
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((x) - PAGE_OFFSET + PHYS_OFFSET))
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#define lbus_to_virt(x) \
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(( ((x) >= IOP13XX_PMMR_P_START) && ((x) < IOP13XX_PMMR_P_END) ) ? \
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((x) - IOP13XX_PMMR_PHYS_MEM_BASE + IOP13XX_PMMR_VIRT_MEM_BASE ) : \
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((x) - PHYS_OFFSET + PAGE_OFFSET))
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/* Device is an lbus device if it is on the platform bus of the IOP13XX */
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#define is_lbus_device(dev) (dev &&\
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(strncmp(dev->bus->name, "platform", 8) == 0))
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#define __arch_page_to_dma(dev, page) \
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({is_lbus_device(dev) ? (dma_addr_t)virt_to_lbus(page_address(page)) : \
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(dma_addr_t)__virt_to_bus(page_address(page));})
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#define __arch_dma_to_virt(dev, addr) \
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({is_lbus_device(dev) ? lbus_to_virt(addr) : __bus_to_virt(addr);})
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#define __arch_virt_to_dma(dev, addr) \
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({is_lbus_device(dev) ? virt_to_lbus(addr) : __virt_to_bus(addr);})
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#endif /* CONFIG_ARCH_IOP13XX */
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#endif /* !ASSEMBLY */
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#define PFN_TO_NID(addr) (0)
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#endif
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