| Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1 | /* |
| 2 | * Declarations of procedures and variables shared between files |
| 3 | * in arch/ppc/mm/. |
| 4 | * |
| 5 | * Derived from arch/ppc/mm/init.c: |
| 6 | * Copyright (C) 1995-1996 Gary Thomas (gdt@linuxppc.org) |
| 7 | * |
| 8 | * Modifications by Paul Mackerras (PowerMac) (paulus@cs.anu.edu.au) |
| 9 | * and Cort Dougan (PReP) (cort@cs.nmt.edu) |
| 10 | * Copyright (C) 1996 Paul Mackerras |
| 11 | * Amiga/APUS changes by Jesper Skov (jskov@cygnus.co.uk). |
| 12 | * |
| 13 | * Derived from "arch/i386/mm/init.c" |
| 14 | * Copyright (C) 1991, 1992, 1993, 1994 Linus Torvalds |
| 15 | * |
| 16 | * This program is free software; you can redistribute it and/or |
| 17 | * modify it under the terms of the GNU General Public License |
| 18 | * as published by the Free Software Foundation; either version |
| 19 | * 2 of the License, or (at your option) any later version. |
| 20 | * |
| 21 | */ |
| 22 | #include <asm/tlbflush.h> |
| 23 | #include <asm/mmu.h> |
| 24 | |
| 25 | extern void mapin_ram(void); |
| 26 | extern int map_page(unsigned long va, phys_addr_t pa, int flags); |
| 27 | extern void setbat(int index, unsigned long virt, unsigned long phys, |
| 28 | unsigned int size, int flags); |
| 29 | extern void reserve_phys_mem(unsigned long start, unsigned long size); |
| 30 | extern void settlbcam(int index, unsigned long virt, phys_addr_t phys, |
| 31 | unsigned int size, int flags, unsigned int pid); |
| 32 | extern void invalidate_tlbcam_entry(int index); |
| 33 | |
| 34 | extern int __map_without_bats; |
| 35 | extern unsigned long ioremap_base; |
| 36 | extern unsigned long ioremap_bot; |
| 37 | extern unsigned int rtas_data, rtas_size; |
| 38 | |
| 39 | extern unsigned long total_memory; |
| 40 | extern unsigned long total_lowmem; |
| 41 | extern int mem_init_done; |
| 42 | |
| 43 | extern PTE *Hash, *Hash_end; |
| 44 | extern unsigned long Hash_size, Hash_mask; |
| 45 | |
| Kumar Gala | 5be061e | 2005-06-21 17:15:26 -0700 | [diff] [blame] | 46 | extern unsigned int num_tlbcam_entries; |
| 47 | |
| Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 48 | /* ...and now those things that may be slightly different between processor |
| 49 | * architectures. -- Dan |
| 50 | */ |
| 51 | #if defined(CONFIG_8xx) |
| 52 | #define flush_HPTE(X, va, pg) _tlbie(va) |
| 53 | #define MMU_init_hw() do { } while(0) |
| 54 | #define mmu_mapin_ram() (0UL) |
| 55 | |
| 56 | #elif defined(CONFIG_4xx) |
| 57 | #define flush_HPTE(X, va, pg) _tlbie(va) |
| 58 | extern void MMU_init_hw(void); |
| 59 | extern unsigned long mmu_mapin_ram(void); |
| 60 | |
| 61 | #elif defined(CONFIG_FSL_BOOKE) |
| 62 | #define flush_HPTE(X, va, pg) _tlbie(va) |
| 63 | extern void MMU_init_hw(void); |
| 64 | extern unsigned long mmu_mapin_ram(void); |
| 65 | extern void adjust_total_lowmem(void); |
| 66 | |
| 67 | #else |
| 68 | /* anything except 4xx or 8xx */ |
| 69 | extern void MMU_init_hw(void); |
| 70 | extern unsigned long mmu_mapin_ram(void); |
| 71 | |
| 72 | /* Be careful....this needs to be updated if we ever encounter 603 SMPs, |
| 73 | * which includes all new 82xx processors. We need tlbie/tlbsync here |
| 74 | * in that case (I think). -- Dan. |
| 75 | */ |
| 76 | static inline void flush_HPTE(unsigned context, unsigned long va, |
| 77 | unsigned long pdval) |
| 78 | { |
| 79 | if ((Hash != 0) && |
| 80 | cpu_has_feature(CPU_FTR_HPTE_TABLE)) |
| 81 | flush_hash_pages(0, va, pdval, 1); |
| 82 | else |
| 83 | _tlbie(va); |
| 84 | } |
| 85 | #endif |