1 #ifndef _ASM_POWERPC_PGTABLE_H 2 #define _ASM_POWERPC_PGTABLE_H 3 4 #ifndef __ASSEMBLY__ 5 #include <linux/mmdebug.h> 6 #include <linux/mmzone.h> 7 #include <asm/processor.h> /* For TASK_SIZE */ 8 #include <asm/mmu.h> 9 #include <asm/page.h> 10 11 struct mm_struct; 12 13 #endif /* !__ASSEMBLY__ */ 14 15 #ifdef CONFIG_PPC_BOOK3S 16 #include <asm/book3s/pgtable.h> 17 #else 18 #include <asm/nohash/pgtable.h> 19 #endif /* !CONFIG_PPC_BOOK3S */ 20 21 #ifndef __ASSEMBLY__ 22 23 #include <asm/tlbflush.h> 24 25 /* Keep these as a macros to avoid include dependency mess */ 26 #define pte_page(x) pfn_to_page(pte_pfn(x)) 27 #define mk_pte(page, pgprot) pfn_pte(page_to_pfn(page), (pgprot)) 28 29 /* 30 * ZERO_PAGE is a global shared page that is always zero: used 31 * for zero-mapped memory areas etc.. 32 */ 33 extern unsigned long empty_zero_page[]; 34 #define ZERO_PAGE(vaddr) (virt_to_page(empty_zero_page)) 35 36 extern pgd_t swapper_pg_dir[]; 37 38 void limit_zone_pfn(enum zone_type zone, unsigned long max_pfn); 39 int dma_pfn_limit_to_zone(u64 pfn_limit); 40 extern void paging_init(void); 41 42 /* 43 * kern_addr_valid is intended to indicate whether an address is a valid 44 * kernel address. Most 32-bit archs define it as always true (like this) 45 * but most 64-bit archs actually perform a test. What should we do here? 46 */ 47 #define kern_addr_valid(addr) (1) 48 49 #include <asm-generic/pgtable.h> 50 51 52 /* 53 * This gets called at the end of handling a page fault, when 54 * the kernel has put a new PTE into the page table for the process. 55 * We use it to ensure coherency between the i-cache and d-cache 56 * for the page which has just been mapped in. 57 * On machines which use an MMU hash table, we use this to put a 58 * corresponding HPTE into the hash table ahead of time, instead of 59 * waiting for the inevitable extra hash-table miss exception. 60 */ 61 extern void update_mmu_cache(struct vm_area_struct *, unsigned long, pte_t *); 62 63 extern int gup_hugepte(pte_t *ptep, unsigned long sz, unsigned long addr, 64 unsigned long end, int write, 65 struct page **pages, int *nr); 66 #ifndef CONFIG_TRANSPARENT_HUGEPAGE 67 #define pmd_large(pmd) 0 68 #define has_transparent_hugepage() 0 69 #endif 70 pte_t *__find_linux_pte_or_hugepte(pgd_t *pgdir, unsigned long ea, 71 bool *is_thp, unsigned *shift); 72 static inline pte_t *find_linux_pte_or_hugepte(pgd_t *pgdir, unsigned long ea, 73 bool *is_thp, unsigned *shift) 74 { 75 if (!arch_irqs_disabled()) { 76 pr_info("%s called with irq enabled\n", __func__); 77 dump_stack(); 78 } 79 return __find_linux_pte_or_hugepte(pgdir, ea, is_thp, shift); 80 } 81 #endif /* __ASSEMBLY__ */ 82 83 #endif /* _ASM_POWERPC_PGTABLE_H */ 84