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#ifndef __ASM_ARCH_MEMORY_H
#define __ASM_ARCH_MEMORY_H
#include <mach/hardware.h>
/*
* Physical DRAM offset.
*/
#define PHYS_OFFSET UL(0x00000000)
#ifndef __ASSEMBLY__
#if defined(CONFIG_ARCH_IOP13XX)
#define IOP13XX_PMMR_V_START (IOP13XX_PMMR_VIRT_MEM_BASE)
#define IOP13XX_PMMR_V_END (IOP13XX_PMMR_VIRT_MEM_BASE + IOP13XX_PMMR_SIZE)
#define IOP13XX_PMMR_P_START (IOP13XX_PMMR_PHYS_MEM_BASE)
#define IOP13XX_PMMR_P_END (IOP13XX_PMMR_PHYS_MEM_BASE + IOP13XX_PMMR_SIZE)
/*
* 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.
*/
/* RAM has 1:1 mapping on the PCIe/x Busses */
#define __virt_to_bus(x) (__virt_to_phys(x))
#define __bus_to_virt(x) (__phys_to_virt(x))
static inline dma_addr_t __virt_to_lbus(unsigned long x)
{
return x + IOP13XX_PMMR_PHYS_MEM_BASE - IOP13XX_PMMR_VIRT_MEM_BASE;
}
static inline unsigned long __lbus_to_virt(dma_addr_t x)
{
return x + IOP13XX_PMMR_VIRT_MEM_BASE - IOP13XX_PMMR_PHYS_MEM_BASE;
}
#define __is_lbus_dma(a) \
((a) >= IOP13XX_PMMR_P_START && (a) < IOP13XX_PMMR_P_END)
#define __is_lbus_virt(a) \
((a) >= IOP13XX_PMMR_V_START && (a) < IOP13XX_PMMR_V_END)
/* Device is an lbus device if it is on the platform bus of the IOP13XX */
#define is_lbus_device(dev) \
(dev && strncmp(dev->bus->name, "platform", 8) == 0)
#define __arch_dma_to_virt(dev, addr) \
({ \
unsigned long __virt; \
dma_addr_t __dma = addr; \
if (is_lbus_device(dev) && __is_lbus_dma(__dma)) \
__virt = __lbus_to_virt(__dma); \
else \
__virt = __bus_to_virt(__dma); \
(void *)__virt; \
})
#define __arch_virt_to_dma(dev, addr) \
({ \
unsigned long __virt = (unsigned long)addr; \
dma_addr_t __dma; \
if (is_lbus_device(dev) && __is_lbus_virt(__virt)) \
__dma = __virt_to_lbus(__virt); \
else \
__dma = __virt_to_bus(__virt); \
__dma; \
})
#define __arch_page_to_dma(dev, page) \
__arch_virt_to_dma(dev, page_address(page))
#endif /* CONFIG_ARCH_IOP13XX */
#endif /* !ASSEMBLY */
#define PFN_TO_NID(addr) (0)
#endif
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