1 #ifndef __ASM_ARCH_MEMORY_H
2 #define __ASM_ARCH_MEMORY_H
4 #include <mach/hardware.h>
7 * Physical DRAM offset.
9 #define PLAT_PHYS_OFFSET UL(0x00000000)
13 #if defined(CONFIG_ARCH_IOP13XX)
14 #define IOP13XX_PMMR_V_START (IOP13XX_PMMR_VIRT_MEM_BASE)
15 #define IOP13XX_PMMR_V_END (IOP13XX_PMMR_VIRT_MEM_BASE + IOP13XX_PMMR_SIZE)
16 #define IOP13XX_PMMR_P_START (IOP13XX_PMMR_PHYS_MEM_BASE)
17 #define IOP13XX_PMMR_P_END (IOP13XX_PMMR_PHYS_MEM_BASE + IOP13XX_PMMR_SIZE)
19 static inline dma_addr_t
__virt_to_lbus(unsigned long x
)
21 return x
+ IOP13XX_PMMR_PHYS_MEM_BASE
- IOP13XX_PMMR_VIRT_MEM_BASE
;
24 static inline unsigned long __lbus_to_virt(dma_addr_t x
)
26 return x
+ IOP13XX_PMMR_VIRT_MEM_BASE
- IOP13XX_PMMR_PHYS_MEM_BASE
;
29 #define __is_lbus_dma(a) \
30 ((a) >= IOP13XX_PMMR_P_START && (a) < IOP13XX_PMMR_P_END)
32 #define __is_lbus_virt(a) \
33 ((a) >= IOP13XX_PMMR_V_START && (a) < IOP13XX_PMMR_V_END)
35 /* Device is an lbus device if it is on the platform bus of the IOP13XX */
36 #define is_lbus_device(dev) \
37 (dev && strncmp(dev->bus->name, "platform", 8) == 0)
39 #define __arch_dma_to_virt(dev, addr) \
41 unsigned long __virt; \
42 dma_addr_t __dma = addr; \
43 if (is_lbus_device(dev) && __is_lbus_dma(__dma)) \
44 __virt = __lbus_to_virt(__dma); \
46 __virt = __phys_to_virt(__dma); \
50 #define __arch_virt_to_dma(dev, addr) \
52 unsigned long __virt = (unsigned long)addr; \
54 if (is_lbus_device(dev) && __is_lbus_virt(__virt)) \
55 __dma = __virt_to_lbus(__virt); \
57 __dma = __virt_to_phys(__virt); \
61 #define __arch_pfn_to_dma(dev, pfn) \
63 /* __is_lbus_virt() can never be true for RAM pages */ \
64 (dma_addr_t)__pfn_to_phys(pfn); \
67 #define __arch_dma_to_pfn(dev, addr) __phys_to_pfn(addr)
69 #endif /* CONFIG_ARCH_IOP13XX */
70 #endif /* !ASSEMBLY */