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Diffstat (limited to 'arch/powerpc/mm/mmu_decl.h')
| -rw-r--r-- | arch/powerpc/mm/mmu_decl.h | 163 |
1 files changed, 163 insertions, 0 deletions
diff --git a/arch/powerpc/mm/mmu_decl.h b/arch/powerpc/mm/mmu_decl.h new file mode 100644 index 000000000..e5d779eed --- /dev/null +++ b/arch/powerpc/mm/mmu_decl.h @@ -0,0 +1,163 @@ +/* + * 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/mmu.h> + +#ifdef CONFIG_PPC_MMU_NOHASH + +/* + * On 40x and 8xx, we directly inline tlbia and tlbivax + */ +#if defined(CONFIG_40x) || defined(CONFIG_PPC_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_PPC_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_PPC_8xx) */ + +/* + * On 8xx, we directly inline tlbie, on others, it's extern + */ +#ifdef CONFIG_PPC_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 /* CONFIG_PPC_8xx */ + +#if defined(CONFIG_PPC_BOOK3E) || defined(CONFIG_PPC_47x) +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 void setbat(int index, unsigned long virt, phys_addr_t phys, + unsigned int size, pgprot_t prot); + +extern int __map_without_bats; +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 */ + +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; + +#ifdef CONFIG_WII +extern unsigned long wii_hole_start; +extern unsigned long wii_hole_size; + +extern unsigned long wii_mmu_mapin_mem2(unsigned long top); +extern void wii_memory_fixups(void); +#endif + +/* ...and now those things that may be slightly different between processor + * architectures. -- Dan + */ +#ifdef CONFIG_PPC32 +extern void MMU_init_hw(void); +extern unsigned long mmu_mapin_ram(unsigned long top); +#endif + +#ifdef CONFIG_PPC_FSL_BOOK3E +extern unsigned long map_mem_in_cams(unsigned long ram, int max_cam_idx, + bool dryrun); +extern unsigned long calc_cam_sz(unsigned long ram, unsigned long virt, + phys_addr_t phys); +#ifdef CONFIG_PPC32 +extern void adjust_total_lowmem(void); +extern int switch_to_as1(void); +extern void restore_to_as0(int esel, int offset, void *dt_ptr, int bootcpu); +#endif +extern void loadcam_entry(unsigned int index); +extern void loadcam_multi(int first_idx, int num, int tmp_idx); + +struct tlbcam { + u32 MAS0; + u32 MAS1; + unsigned long MAS2; + u32 MAS3; + u32 MAS7; +}; +#endif + +#if defined(CONFIG_6xx) || defined(CONFIG_FSL_BOOKE) || defined(CONFIG_PPC_8xx) +/* 6xx have BATS */ +/* FSL_BOOKE have TLBCAM */ +/* 8xx have LTLB */ +phys_addr_t v_block_mapped(unsigned long va); +unsigned long p_block_mapped(phys_addr_t pa); +#else +static inline phys_addr_t v_block_mapped(unsigned long va) { return 0; } +static inline unsigned long p_block_mapped(phys_addr_t pa) { return 0; } +#endif |