| Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 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 |
| Nicolas Pitre | f09b997 | 2005-10-29 21:44:55 +0100 | [diff] [blame] | 15 | #define PHYS_OFFSET UL(0xa0000000) |
| Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 16 | #else |
| Nicolas Pitre | f09b997 | 2005-10-29 21:44:55 +0100 | [diff] [blame] | 17 | #define PHYS_OFFSET UL(0x00000000) |
| Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 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 | |
| Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 39 | #endif |