2 * Declarations of procedures and variables shared between files
5 * Derived from arch/ppc/mm/init.c:
6 * Copyright (C) 1995-1996 Gary Thomas (gdt@linuxppc.org)
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).
13 * Derived from "arch/i386/mm/init.c"
14 * Copyright (C) 1991, 1992, 1993, 1994 Linus Torvalds
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.
23 #include <asm/tlbflush.h>
26 extern void hash_preload(struct mm_struct *mm, unsigned long ea,
27 unsigned long access, unsigned long trap);
31 extern void mapin_ram(void);
32 extern int map_page(unsigned long va, phys_addr_t pa, int flags);
33 extern void setbat(int index, unsigned long virt, unsigned long phys,
34 unsigned int size, int flags);
35 extern void settlbcam(int index, unsigned long virt, phys_addr_t phys,
36 unsigned int size, int flags, unsigned int pid);
37 extern void invalidate_tlbcam_entry(int index);
39 extern int __map_without_bats;
40 extern unsigned long ioremap_base;
41 extern unsigned int rtas_data, rtas_size;
43 extern PTE *Hash, *Hash_end;
44 extern unsigned long Hash_size, Hash_mask;
46 extern unsigned int num_tlbcam_entries;
49 extern unsigned long ioremap_bot;
50 extern unsigned long __max_low_memory;
51 extern unsigned long __initial_memory_limit;
52 extern unsigned long total_memory;
53 extern unsigned long total_lowmem;
55 /* ...and now those things that may be slightly different between processor
56 * architectures. -- Dan
58 #if defined(CONFIG_8xx)
59 #define flush_HPTE(X, va, pg) _tlbie(va)
60 #define MMU_init_hw() do { } while(0)
61 #define mmu_mapin_ram() (0UL)
63 #elif defined(CONFIG_4xx)
64 #define flush_HPTE(X, va, pg) _tlbie(va)
65 extern void MMU_init_hw(void);
66 extern unsigned long mmu_mapin_ram(void);
68 #elif defined(CONFIG_FSL_BOOKE)
69 #define flush_HPTE(X, va, pg) _tlbie(va)
70 extern void MMU_init_hw(void);
71 extern unsigned long mmu_mapin_ram(void);
72 extern void adjust_total_lowmem(void);
74 #elif defined(CONFIG_PPC32)
75 /* anything 32-bit except 4xx or 8xx */
76 extern void MMU_init_hw(void);
77 extern unsigned long mmu_mapin_ram(void);
79 /* Be careful....this needs to be updated if we ever encounter 603 SMPs,
80 * which includes all new 82xx processors. We need tlbie/tlbsync here
81 * in that case (I think). -- Dan.
83 static inline void flush_HPTE(unsigned context, unsigned long va,
87 cpu_has_feature(CPU_FTR_HPTE_TABLE))
88 flush_hash_pages(0, va, pdval, 1);
92 #else /* CONFIG_PPC64 */
93 /* imalloc region types */
94 #define IM_REGION_UNUSED 0x1
95 #define IM_REGION_SUBSET 0x2
96 #define IM_REGION_EXISTS 0x4
97 #define IM_REGION_OVERLAP 0x8
98 #define IM_REGION_SUPERSET 0x10
100 extern struct vm_struct * im_get_free_area(unsigned long size);
101 extern struct vm_struct * im_get_area(unsigned long v_addr, unsigned long size,
103 extern void im_free(void *addr);