[ARM] Fix IOP13xx build warnings
[linux-2.6.git] / arch / arm / mach-iop13xx / include / mach / memory.h
1 #ifndef __ASM_ARCH_MEMORY_H
2 #define __ASM_ARCH_MEMORY_H
3
4 #include <mach/hardware.h>
5
6 /*
7  * Physical DRAM offset.
8  */
9 #define PHYS_OFFSET     UL(0x00000000)
10
11 #ifndef __ASSEMBLY__
12
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)
18
19 /*
20  * Virtual view <-> PCI DMA view memory address translations
21  * virt_to_bus: Used to translate the virtual address to an
22  *              address suitable to be passed to set_dma_addr
23  * bus_to_virt: Used to convert an address for DMA operations
24  *              to an address that the kernel can use.
25  */
26
27 /* RAM has 1:1 mapping on the PCIe/x Busses */
28 #define __virt_to_bus(x)        (__virt_to_phys(x))
29 #define __bus_to_virt(x)        (__phys_to_virt(x))
30
31 static inline dma_addr_t __virt_to_lbus(unsigned long x)
32 {
33         return x + IOP13XX_PMMR_PHYS_MEM_BASE - IOP13XX_PMMR_VIRT_MEM_BASE;
34 }
35
36 static inline unsigned long __lbus_to_virt(dma_addr_t x)
37 {
38         return x + IOP13XX_PMMR_VIRT_MEM_BASE - IOP13XX_PMMR_PHYS_MEM_BASE;
39 }
40
41 #define __is_lbus_dma(a)                                \
42         ((a) >= IOP13XX_PMMR_P_START && (a) < IOP13XX_PMMR_P_END)
43
44 #define __is_lbus_virt(a)                               \
45         ((a) >= IOP13XX_PMMR_V_START && (a) < IOP13XX_PMMR_V_END)
46
47 /* Device is an lbus device if it is on the platform bus of the IOP13XX */
48 #define is_lbus_device(dev)                             \
49         (dev && strncmp(dev->bus->name, "platform", 8) == 0)
50
51 #define __arch_dma_to_virt(dev, addr)                                   \
52         ({                                                              \
53                 unsigned long __virt;                                   \
54                 dma_addr_t __dma = addr;                                \
55                 if (is_lbus_device(dev) && __is_lbus_dma(__dma))        \
56                         __virt = __lbus_to_virt(__dma);                 \
57                 else                                                    \
58                         __virt = __bus_to_virt(__dma);                  \
59                 (void *)__virt;                                         \
60         })
61
62 #define __arch_virt_to_dma(dev, addr)                                   \
63         ({                                                              \
64                 unsigned long __virt = (unsigned long)addr;             \
65                 dma_addr_t __dma;                                       \
66                 if (is_lbus_device(dev) && __is_lbus_virt(__virt))      \
67                         __dma = __virt_to_lbus(__virt);                 \
68                 else                                                    \
69                         __dma = __virt_to_bus(__virt);                  \
70                 __dma;                                                  \
71         })
72
73 #define __arch_page_to_dma(dev, page)                                   \
74         __arch_virt_to_dma(dev, page_address(page))
75
76 #endif /* CONFIG_ARCH_IOP13XX */
77 #endif /* !ASSEMBLY */
78
79 #define PFN_TO_NID(addr)        (0)
80
81 #endif