Commit | Line | Data |
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3eff851b TL |
1 | /* |
2 | * arch/arm/mach-omap1/include/mach/memory.h | |
3 | */ | |
4 | ||
ee581ae8 NP |
5 | #ifndef __ASM_ARCH_MEMORY_H |
6 | #define __ASM_ARCH_MEMORY_H | |
7 | ||
8 | /* | |
9 | * Physical DRAM offset. | |
10 | */ | |
11 | #define PLAT_PHYS_OFFSET UL(0x10000000) | |
12 | ||
13 | /* | |
14 | * Bus address is physical address, except for OMAP-1510 Local Bus. | |
15 | * OMAP-1510 bus address is translated into a Local Bus address if the | |
16 | * OMAP bus type is lbus. We do the address translation based on the | |
17 | * device overriding the defaults used in the dma-mapping API. | |
18 | * Note that the is_lbus_device() test is not very efficient on 1510 | |
19 | * because of the strncmp(). | |
20 | */ | |
2c799cef | 21 | #if defined(CONFIG_ARCH_OMAP15XX) && !defined(__ASSEMBLER__) |
e4c060db | 22 | #include "../../mach-omap1/soc.h" |
ee581ae8 NP |
23 | |
24 | /* | |
25 | * OMAP-1510 Local Bus address offset | |
26 | */ | |
27 | #define OMAP1510_LB_OFFSET UL(0x30000000) | |
28 | ||
29 | #define virt_to_lbus(x) ((x) - PAGE_OFFSET + OMAP1510_LB_OFFSET) | |
30 | #define lbus_to_virt(x) ((x) - OMAP1510_LB_OFFSET + PAGE_OFFSET) | |
31 | #define is_lbus_device(dev) (cpu_is_omap15xx() && dev && (strncmp(dev_name(dev), "ohci", 4) == 0)) | |
32 | ||
33 | #define __arch_pfn_to_dma(dev, pfn) \ | |
34 | ({ dma_addr_t __dma = __pfn_to_phys(pfn); \ | |
35 | if (is_lbus_device(dev)) \ | |
36 | __dma = __dma - PHYS_OFFSET + OMAP1510_LB_OFFSET; \ | |
37 | __dma; }) | |
38 | ||
39 | #define __arch_dma_to_pfn(dev, addr) \ | |
40 | ({ dma_addr_t __dma = addr; \ | |
41 | if (is_lbus_device(dev)) \ | |
42 | __dma += PHYS_OFFSET - OMAP1510_LB_OFFSET; \ | |
43 | __phys_to_pfn(__dma); \ | |
44 | }) | |
45 | ||
46 | #define __arch_dma_to_virt(dev, addr) ({ (void *) (is_lbus_device(dev) ? \ | |
47 | lbus_to_virt(addr) : \ | |
48 | __phys_to_virt(addr)); }) | |
49 | ||
50 | #define __arch_virt_to_dma(dev, addr) ({ unsigned long __addr = (unsigned long)(addr); \ | |
51 | (dma_addr_t) (is_lbus_device(dev) ? \ | |
52 | virt_to_lbus(__addr) : \ | |
53 | __virt_to_phys(__addr)); }) | |
54 | ||
55 | #endif /* CONFIG_ARCH_OMAP15XX */ | |
56 | ||
57 | #endif |