1#ifndef _ASM_POWERPC_PAGE_32_H 2#define _ASM_POWERPC_PAGE_32_H 3 4#if defined(CONFIG_PHYSICAL_ALIGN) && (CONFIG_PHYSICAL_START != 0) 5#if (CONFIG_PHYSICAL_START % CONFIG_PHYSICAL_ALIGN) != 0 6#error "CONFIG_PHYSICAL_START must be a multiple of CONFIG_PHYSICAL_ALIGN" 7#endif 8#endif 9 10#define VM_DATA_DEFAULT_FLAGS VM_DATA_DEFAULT_FLAGS32 11 12#ifdef CONFIG_NOT_COHERENT_CACHE 13#define ARCH_DMA_MINALIGN L1_CACHE_BYTES 14#endif 15 16#ifdef CONFIG_PTE_64BIT 17#define PTE_FLAGS_OFFSET 4 /* offset of PTE flags, in bytes */ 18#else 19#define PTE_FLAGS_OFFSET 0 20#endif 21 22#ifdef CONFIG_PPC_256K_PAGES 23#define PTE_SHIFT (PAGE_SHIFT - PTE_T_LOG2 - 2) /* 1/4 of a page */ 24#else 25#define PTE_SHIFT (PAGE_SHIFT - PTE_T_LOG2) /* full page */ 26#endif 27 28#ifndef __ASSEMBLY__ 29/* 30 * The basic type of a PTE - 64 bits for those CPUs with > 32 bit 31 * physical addressing. 32 */ 33#ifdef CONFIG_PTE_64BIT 34typedef unsigned long long pte_basic_t; 35#else 36typedef unsigned long pte_basic_t; 37#endif 38 39struct page; 40extern void clear_pages(void *page, int order); 41static inline void clear_page(void *page) { clear_pages(page, 0); } 42extern void copy_page(void *to, void *from); 43 44#include <asm-generic/getorder.h> 45 46#define PGD_T_LOG2 (__builtin_ffs(sizeof(pgd_t)) - 1) 47#define PTE_T_LOG2 (__builtin_ffs(sizeof(pte_t)) - 1) 48 49#endif /* __ASSEMBLY__ */ 50 51#endif /* _ASM_POWERPC_PAGE_32_H */ 52