diff options
Diffstat (limited to 'arch/arm/plat-stmp3xxx/include/mach/memory.h')
| -rw-r--r-- | arch/arm/plat-stmp3xxx/include/mach/memory.h | 41 |
1 files changed, 41 insertions, 0 deletions
diff --git a/arch/arm/plat-stmp3xxx/include/mach/memory.h b/arch/arm/plat-stmp3xxx/include/mach/memory.h index 7b875a07a1a7..b152f0ef30c0 100644 --- a/arch/arm/plat-stmp3xxx/include/mach/memory.h +++ b/arch/arm/plat-stmp3xxx/include/mach/memory.h @@ -14,9 +14,50 @@ #ifndef __ASM_ARCH_MEMORY_H #define __ASM_ARCH_MEMORY_H +#include <asm/page.h> +#include <asm/sizes.h> + /* * Physical DRAM offset. */ #define PHYS_OFFSET UL(0x40000000) +#ifndef __ASSEMBLY__ + +#ifdef CONFIG_DMA_ZONE_SIZE +#define MXC_DMA_ZONE_SIZE ((CONFIG_DMA_ZONE_SIZE * SZ_1M) >> PAGE_SHIFT) +#else +#define MXC_DMA_ZONE_SIZE ((12 * SZ_1M) >> PAGE_SHIFT) +#endif + +static inline void __arch_adjust_zones(int node, unsigned long *zone_size, + unsigned long *zhole_size) +{ + if (node != 0) + return; + /* Create separate zone to reserve memory for DMA */ + zone_size[1] = zone_size[0] - MXC_DMA_ZONE_SIZE; + zone_size[0] = MXC_DMA_ZONE_SIZE; + zhole_size[1] = zhole_size[0]; + zhole_size[0] = 0; +} + +#define arch_adjust_zones(node, size, holes) \ + __arch_adjust_zones(node, size, holes) + +#endif +/* + * Virtual view <-> DMA view memory address translations + * virt_to_bus: Used to translate the virtual address to an + * address suitable to be passed to set_dma_addr + * bus_to_virt: Used to convert an address for DMA operations + * to an address that the kernel can use. + */ +#define __virt_to_bus(x) __virt_to_phys(x) +#define __bus_to_virt(x) __phys_to_virt(x) + +#define ISA_DMA_THRESHOLD (0x0003ffffULL) + +#define CONSISTENT_DMA_SIZE SZ_32M + #endif |