/* * Declarations of procedures and variables shared between files * in arch/ppc/mm/. * * Derived from arch/ppc/mm/init.c: * Copyright (C) 1995-1996 Gary Thomas (gdt@linuxppc.org) * * Modifications by Paul Mackerras (PowerMac) (paulus@cs.anu.edu.au) * and Cort Dougan (PReP) (cort@cs.nmt.edu) * Copyright (C) 1996 Paul Mackerras * * Derived from "arch/i386/mm/init.c" * Copyright (C) 1991, 1992, 1993, 1994 Linus Torvalds * * This program is free software; you can redistribute it and/or * modify it under the terms of the GNU General Public License * as published by the Free Software Foundation; either version * 2 of the License, or (at your option) any later version. * */ #include <linux/mm.h> #include <asm/tlbflush.h> #include <asm/mmu.h> #ifdef CONFIG_PPC_MMU_NOHASH /* * On 40x and 8xx, we directly inline tlbia and tlbivax */ #if defined(CONFIG_40x) || defined(CONFIG_8xx) static inline void _tlbil_all(void) { asm volatile ("sync; tlbia; isync" : : : "memory"); } static inline void _tlbil_pid(unsigned int pid) { asm volatile ("sync; tlbia; isync" : : : "memory"); } #else /* CONFIG_40x || CONFIG_8xx */ extern void _tlbil_all(void); extern void _tlbil_pid(unsigned int pid); #endif /* !(CONFIG_40x || CONFIG_8xx) */ /* * On 8xx, we directly inline tlbie, on others, it's extern */ #ifdef CONFIG_8xx static inline void _tlbil_va(unsigned long address, unsigned int pid) { asm volatile ("tlbie %0; sync" : : "r" (address) : "memory"); } #else /* CONFIG_8xx */ extern void _tlbil_va(unsigned long address, unsigned int pid); #endif /* CONIFG_8xx */ /* * As of today, we don't support tlbivax broadcast on any * implementation. When that becomes the case, this will be * an extern. */ static inline void _tlbivax_bcast(unsigned long address, unsigned int pid) { BUG(); } #else /* CONFIG_PPC_MMU_NOHASH */ extern void hash_preload(struct mm_struct *mm, unsigned long ea, unsigned long access, unsigned long trap); extern void _tlbie(unsigned long address); extern void _tlbia(void); #endif /* CONFIG_PPC_MMU_NOHASH */ #ifdef CONFIG_PPC32 struct tlbcam { u32 MAS0; u32 MAS1; u32 MAS2; u32 MAS3; u32 MAS7; }; extern void mapin_ram(void); extern int map_page(unsigned long va, phys_addr_t pa, int flags); extern void setbat(int index, unsigned long virt, phys_addr_t phys, unsigned int size, int flags); extern void settlbcam(int index, unsigned long virt, phys_addr_t phys, unsigned int size, int flags, unsigned int pid); extern void invalidate_tlbcam_entry(int index); extern int __map_without_bats; extern unsigned long ioremap_base; extern unsigned int rtas_data, rtas_size; struct hash_pte; extern struct hash_pte *Hash, *Hash_end; extern unsigned long Hash_size, Hash_mask; #endif extern unsigned long ioremap_bot; extern unsigned long __max_low_memory; extern phys_addr_t __initial_memory_limit_addr; extern phys_addr_t total_memory; extern phys_addr_t total_lowmem; extern phys_addr_t memstart_addr; extern phys_addr_t lowmem_end_addr; /* ...and now those things that may be slightly different between processor * architectures. -- Dan */ #if defined(CONFIG_8xx) #define MMU_init_hw() do { } while(0) #define mmu_mapin_ram() (0UL) #elif defined(CONFIG_4xx) extern void MMU_init_hw(void); extern unsigned long mmu_mapin_ram(void); #elif defined(CONFIG_FSL_BOOKE) extern void MMU_init_hw(void); extern unsigned long mmu_mapin_ram(void); extern void adjust_total_lowmem(void); #elif defined(CONFIG_PPC32) /* anything 32-bit except 4xx or 8xx */ extern void MMU_init_hw(void); extern unsigned long mmu_mapin_ram(void); #endif