/* * linux/arch/unicore32/mm/mm.h * * Code specific to PKUnity SoC and UniCore ISA * * Copyright (C) 2001-2010 GUAN Xue-tao * * This program is free software; you can redistribute it and/or modify * it under the terms of the GNU General Public License version 2 as * published by the Free Software Foundation. */ #include <asm/hwdef-copro.h> /* the upper-most page table pointer */ extern pmd_t *top_pmd; extern int sysctl_overcommit_memory; #define TOP_PTE(x) pte_offset_kernel(top_pmd, x) static inline pmd_t *pmd_off(pgd_t *pgd, unsigned long virt) { return pmd_offset((pud_t *)pgd, virt); } static inline pmd_t *pmd_off_k(unsigned long virt) { return pmd_off(pgd_offset_k(virt), virt); } struct mem_type { unsigned int prot_pte; unsigned int prot_l1; unsigned int prot_sect; }; const struct mem_type *get_mem_type(unsigned int type); extern void __flush_dcache_page(struct address_space *, struct page *); extern void hook_fault_code(int nr, int (*fn) (unsigned long, unsigned int, struct pt_regs *), int sig, int code, const char *name); void __init bootmem_init(void); void uc32_mm_memblock_reserve(void);