projects / linux-2.6-block.git / blame
| Commit | Line | Data |
|---|---|---|
| 285f5fa7 DW |
1 | #ifndef __ASM_ARCH_MEMORY_H |
| 2 | #define __ASM_ARCH_MEMORY_H | |
| 3 | ||
| a09e64fb | 4 | #include <mach/hardware.h> |
| 285f5fa7 DW |
5 | |
| 6 | /* | |
| 7 | * Physical DRAM offset. | |
| 8 | */ | |
| 9 | #define PHYS_OFFSET UL(0x00000000) | |
| 285f5fa7 DW |
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 | ||
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19 | static inline dma_addr_t __virt_to_lbus(unsigned long x) |
| 20 | { | |
| 21 | return x + IOP13XX_PMMR_PHYS_MEM_BASE - IOP13XX_PMMR_VIRT_MEM_BASE; | |
| 22 | } | |
| 285f5fa7 | 23 | |
| 1562f98f RK |
24 | static inline unsigned long __lbus_to_virt(dma_addr_t x) |
| 25 | { | |
| 26 | return x + IOP13XX_PMMR_VIRT_MEM_BASE - IOP13XX_PMMR_PHYS_MEM_BASE; | |
| 27 | } | |
| 28 | ||
| 29 | #define __is_lbus_dma(a) \ | |
| 30 | ((a) >= IOP13XX_PMMR_P_START && (a) < IOP13XX_PMMR_P_END) | |
| 31 | ||
| 32 | #define __is_lbus_virt(a) \ | |
| 33 | ((a) >= IOP13XX_PMMR_V_START && (a) < IOP13XX_PMMR_V_END) | |
| 285f5fa7 DW |
34 | |
| 35 | /* Device is an lbus device if it is on the platform bus of the IOP13XX */ | |
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36 | #define is_lbus_device(dev) \ |
| 37 | (dev && strncmp(dev->bus->name, "platform", 8) == 0) | |
| 285f5fa7 | 38 | |
| 1562f98f RK |
39 | #define __arch_dma_to_virt(dev, addr) \ |
| 40 | ({ \ | |
| 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); \ | |
| 45 | else \ | |
| b5ee9002 | 46 | __virt = __phys_to_virt(__dma); \ |
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47 | (void *)__virt; \ |
| 48 | }) | |
| 285f5fa7 | 49 | |
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50 | #define __arch_virt_to_dma(dev, addr) \ |
| 51 | ({ \ | |
| 52 | unsigned long __virt = (unsigned long)addr; \ | |
| 53 | dma_addr_t __dma; \ | |
| 54 | if (is_lbus_device(dev) && __is_lbus_virt(__virt)) \ | |
| 55 | __dma = __virt_to_lbus(__virt); \ | |
| 56 | else \ | |
| b5ee9002 | 57 | __dma = __virt_to_phys(__virt); \ |
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58 | __dma; \ |
| 59 | }) | |
| 285f5fa7 | 60 | |
| 1562f98f RK |
61 | #define __arch_page_to_dma(dev, page) \ |
| 62 | __arch_virt_to_dma(dev, page_address(page)) | |
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63 | |
| 64 | #endif /* CONFIG_ARCH_IOP13XX */ | |
| 65 | #endif /* !ASSEMBLY */ | |
| 66 | ||
| 67 | #define PFN_TO_NID(addr) (0) | |
| 68 | ||
| 69 | #endif |