Merge to Fedora kernel-2.6.18-1.2224_FC5 patched with stable patch-2.6.18.1-vs2.0...
[linux-2.6.git] / include / asm-arm / arch-iop3xx / memory.h
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 <asm/hardware.h>
9
10 /*
11  * Physical DRAM offset.
12  */
13 #ifndef CONFIG_ARCH_IOP331
14 #define PHYS_OFFSET     UL(0xa0000000)
15 #else
16 #define PHYS_OFFSET     UL(0x00000000)
17 #endif
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 #if defined(CONFIG_ARCH_IOP321)
27
28 #define __virt_to_bus(x)        (((__virt_to_phys(x)) & ~(*IOP321_IATVR2)) | ((*IOP321_IABAR2) & 0xfffffff0))
29 #define __bus_to_virt(x)    (__phys_to_virt(((x) & ~(*IOP321_IALR2)) | ( *IOP321_IATVR2)))
30
31 #elif defined(CONFIG_ARCH_IOP331)
32
33 #define __virt_to_bus(x)        (((__virt_to_phys(x)) & ~(*IOP331_IATVR2)) | ((*IOP331_IABAR2) & 0xfffffff0))
34 #define __bus_to_virt(x)    (__phys_to_virt(((x) & ~(*IOP331_IALR2)) | ( *IOP331_IATVR2)))
35
36 #endif
37
38 #endif