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 <linux/mm.h>
23#include <asm/tlbflush.h>
24#include <asm/mmu.h>
25
26extern void hash_preload(struct mm_struct *mm, unsigned long ea,
27			 unsigned long access, unsigned long trap);
28
29
30#ifdef CONFIG_PPC32
31extern void mapin_ram(void);
32extern int map_page(unsigned long va, phys_addr_t pa, int flags);
33extern void setbat(int index, unsigned long virt, unsigned long phys,
34		   unsigned int size, int flags);
35extern void settlbcam(int index, unsigned long virt, phys_addr_t phys,
36		      unsigned int size, int flags, unsigned int pid);
37extern void invalidate_tlbcam_entry(int index);
38
39extern int __map_without_bats;
40extern unsigned long ioremap_base;
41extern unsigned int rtas_data, rtas_size;
42
43struct _PTE;
44extern struct _PTE *Hash, *Hash_end;
45extern unsigned long Hash_size, Hash_mask;
46
47extern unsigned int num_tlbcam_entries;
48#endif
49
50extern unsigned long ioremap_bot;
51extern unsigned long __max_low_memory;
52extern unsigned long __initial_memory_limit;
53extern unsigned long total_memory;
54extern unsigned long total_lowmem;
55
56/* ...and now those things that may be slightly different between processor
57 * architectures.  -- Dan
58 */
59#if defined(CONFIG_8xx)
60#define flush_HPTE(X, va, pg)	_tlbie(va)
61#define MMU_init_hw()		do { } while(0)
62#define mmu_mapin_ram()		(0UL)
63
64#elif defined(CONFIG_4xx)
65#define flush_HPTE(X, va, pg)	_tlbie(va)
66extern void MMU_init_hw(void);
67extern unsigned long mmu_mapin_ram(void);
68
69#elif defined(CONFIG_FSL_BOOKE)
70#define flush_HPTE(X, va, pg)	_tlbie(va)
71extern void MMU_init_hw(void);
72extern unsigned long mmu_mapin_ram(void);
73extern void adjust_total_lowmem(void);
74
75#elif defined(CONFIG_PPC32)
76/* anything 32-bit except 4xx or 8xx */
77extern void MMU_init_hw(void);
78extern unsigned long mmu_mapin_ram(void);
79
80/* Be careful....this needs to be updated if we ever encounter 603 SMPs,
81 * which includes all new 82xx processors.  We need tlbie/tlbsync here
82 * in that case (I think). -- Dan.
83 */
84static inline void flush_HPTE(unsigned context, unsigned long va,
85			      unsigned long pdval)
86{
87	if ((Hash != 0) &&
88	    cpu_has_feature(CPU_FTR_HPTE_TABLE))
89		flush_hash_pages(0, va, pdval, 1);
90	else
91		_tlbie(va);
92}
93#else /* CONFIG_PPC64 */
94/* imalloc region types */
95#define IM_REGION_UNUSED	0x1
96#define IM_REGION_SUBSET	0x2
97#define IM_REGION_EXISTS	0x4
98#define IM_REGION_OVERLAP	0x8
99#define IM_REGION_SUPERSET	0x10
100
101extern struct vm_struct * im_get_free_area(unsigned long size);
102extern struct vm_struct * im_get_area(unsigned long v_addr, unsigned long size,
103				      int region_type);
104extern void im_free(void *addr);
105#endif
106