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 34 typedef unsigned long long pte_basic_t; 35 #else 36 typedef unsigned long pte_basic_t; 37 #endif 38 39 struct page; 40 extern void clear_pages(void *page, int order); 41 static inline void clear_page(void *page) { clear_pages(page, 0); } 42 extern 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