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1da177e4 LT |
1 | /* |
2 | * linux/include/asm-arm/arch-iop3xx/memory.h | |
3 | */ | |
4 | ||
5 | #ifndef __ASM_ARCH_MEMORY_H | |
6 | #define __ASM_ARCH_MEMORY_H | |
7 | ||
8 | #include <linux/config.h> | |
9 | #include <asm/hardware.h> | |
10 | ||
11 | /* | |
12 | * Physical DRAM offset. | |
13 | */ | |
14 | #ifndef CONFIG_ARCH_IOP331 | |
15 | #define PHYS_OFFSET (0xa0000000UL) | |
16 | #else | |
17 | #define PHYS_OFFSET (0x00000000UL) | |
18 | #endif | |
19 | ||
20 | /* | |
21 | * Virtual view <-> PCI DMA view memory address translations | |
22 | * virt_to_bus: Used to translate the virtual address to an | |
23 | * address suitable to be passed to set_dma_addr | |
24 | * bus_to_virt: Used to convert an address for DMA operations | |
25 | * to an address that the kernel can use. | |
26 | */ | |
27 | #if defined(CONFIG_ARCH_IOP321) | |
28 | ||
29 | #define __virt_to_bus(x) (((__virt_to_phys(x)) & ~(*IOP321_IATVR2)) | ((*IOP321_IABAR2) & 0xfffffff0)) | |
30 | #define __bus_to_virt(x) (__phys_to_virt(((x) & ~(*IOP321_IALR2)) | ( *IOP321_IATVR2))) | |
31 | ||
32 | #elif defined(CONFIG_ARCH_IOP331) | |
33 | ||
34 | #define __virt_to_bus(x) (((__virt_to_phys(x)) & ~(*IOP331_IATVR2)) | ((*IOP331_IABAR2) & 0xfffffff0)) | |
35 | #define __bus_to_virt(x) (__phys_to_virt(((x) & ~(*IOP331_IALR2)) | ( *IOP331_IATVR2))) | |
36 | ||
37 | #endif | |
38 | ||
39 | #define PFN_TO_NID(addr) (0) | |
40 | ||
41 | #endif |