| /* |
| * 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"); |
| } |
| #define _tlbil_pid_noind(pid) _tlbil_pid(pid) |
| |
| #else /* CONFIG_40x || CONFIG_8xx */ |
| extern void _tlbil_all(void); |
| extern void _tlbil_pid(unsigned int pid); |
| #ifdef CONFIG_PPC_BOOK3E |
| extern void _tlbil_pid_noind(unsigned int pid); |
| #else |
| #define _tlbil_pid_noind(pid) _tlbil_pid(pid) |
| #endif |
| #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, |
| unsigned int tsize, unsigned int ind) |
| { |
| asm volatile ("tlbie %0; sync" : : "r" (address) : "memory"); |
| } |
| #elif defined(CONFIG_PPC_BOOK3E) |
| extern void _tlbil_va(unsigned long address, unsigned int pid, |
| unsigned int tsize, unsigned int ind); |
| #else |
| extern void __tlbil_va(unsigned long address, unsigned int pid); |
| static inline void _tlbil_va(unsigned long address, unsigned int pid, |
| unsigned int tsize, unsigned int ind) |
| { |
| __tlbil_va(address, 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. |
| */ |
| #ifdef CONFIG_PPC_BOOK3E |
| extern void _tlbivax_bcast(unsigned long address, unsigned int pid, |
| unsigned int tsize, unsigned int ind); |
| #else |
| static inline void _tlbivax_bcast(unsigned long address, unsigned int pid, |
| unsigned int tsize, unsigned int ind) |
| { |
| BUG(); |
| } |
| #endif |
| |
| #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 |
| |
| 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 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 /* CONFIG_PPC32 */ |
| |
| #ifdef CONFIG_PPC64 |
| extern int map_kernel_page(unsigned long ea, unsigned long pa, int flags); |
| #endif /* CONFIG_PPC64 */ |
| |
| 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 |