ia64/linux-2.6.18-xen.hg

view include/asm-arm/arch-iop3xx/memory.h @ 782:9ab1c319531f

merge with linux-2.6.18-xen.hg
author Isaku Yamahata <yamahata@valinux.co.jp>
date Wed Jan 28 13:07:23 2009 +0900 (2009-01-28)
parents 831230e53067
children
line source
1 /*
2 * linux/include/asm-arm/arch-iop3xx/memory.h
3 */
5 #ifndef __ASM_ARCH_MEMORY_H
6 #define __ASM_ARCH_MEMORY_H
8 #include <asm/hardware.h>
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
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)
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)))
31 #elif defined(CONFIG_ARCH_IOP331)
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)))
36 #endif
38 #endif