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Paul Mackerras14cf11a2005-09-26 16:04:21 +10001/*
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
Paul Mackerras14cf11a2005-09-26 16:04:21 +100011 *
12 * Derived from "arch/i386/mm/init.c"
13 * Copyright (C) 1991, 1992, 1993, 1994 Linus Torvalds
14 *
15 * This program is free software; you can redistribute it and/or
16 * modify it under the terms of the GNU General Public License
17 * as published by the Free Software Foundation; either version
18 * 2 of the License, or (at your option) any later version.
19 *
20 */
David Gibson62102302007-04-24 13:09:12 +100021#include <linux/mm.h>
Paul Mackerras14cf11a2005-09-26 16:04:21 +100022#include <asm/tlbflush.h>
23#include <asm/mmu.h>
24
Benjamin Herrenschmidt2a4aca112008-12-18 19:13:42 +000025#ifdef CONFIG_PPC_MMU_NOHASH
26
27/*
28 * On 40x and 8xx, we directly inline tlbia and tlbivax
29 */
30#if defined(CONFIG_40x) || defined(CONFIG_8xx)
31static inline void _tlbil_all(void)
32{
Benjamin Herrenschmidt4a082682009-01-06 17:56:51 +000033 asm volatile ("sync; tlbia; isync" : : : "memory");
Benjamin Herrenschmidt2a4aca112008-12-18 19:13:42 +000034}
35static inline void _tlbil_pid(unsigned int pid)
36{
Benjamin Herrenschmidt4a082682009-01-06 17:56:51 +000037 asm volatile ("sync; tlbia; isync" : : : "memory");
Benjamin Herrenschmidt2a4aca112008-12-18 19:13:42 +000038}
Benjamin Herrenschmidtd4e167d2009-07-23 23:15:24 +000039#define _tlbil_pid_noind(pid) _tlbil_pid(pid)
40
Benjamin Herrenschmidt2a4aca112008-12-18 19:13:42 +000041#else /* CONFIG_40x || CONFIG_8xx */
42extern void _tlbil_all(void);
43extern void _tlbil_pid(unsigned int pid);
Benjamin Herrenschmidt25d21ad2009-07-23 23:15:47 +000044#ifdef CONFIG_PPC_BOOK3E
45extern void _tlbil_pid_noind(unsigned int pid);
46#else
Benjamin Herrenschmidtd4e167d2009-07-23 23:15:24 +000047#define _tlbil_pid_noind(pid) _tlbil_pid(pid)
Benjamin Herrenschmidt25d21ad2009-07-23 23:15:47 +000048#endif
Benjamin Herrenschmidt2a4aca112008-12-18 19:13:42 +000049#endif /* !(CONFIG_40x || CONFIG_8xx) */
50
51/*
52 * On 8xx, we directly inline tlbie, on others, it's extern
53 */
54#ifdef CONFIG_8xx
Benjamin Herrenschmidtd4e167d2009-07-23 23:15:24 +000055static inline void _tlbil_va(unsigned long address, unsigned int pid,
56 unsigned int tsize, unsigned int ind)
Benjamin Herrenschmidt2a4aca112008-12-18 19:13:42 +000057{
Benjamin Herrenschmidt4a082682009-01-06 17:56:51 +000058 asm volatile ("tlbie %0; sync" : : "r" (address) : "memory");
Benjamin Herrenschmidt2a4aca112008-12-18 19:13:42 +000059}
Benjamin Herrenschmidt25d21ad2009-07-23 23:15:47 +000060#elif defined(CONFIG_PPC_BOOK3E)
61extern void _tlbil_va(unsigned long address, unsigned int pid,
62 unsigned int tsize, unsigned int ind);
63#else
Benjamin Herrenschmidtd4e167d2009-07-23 23:15:24 +000064extern void __tlbil_va(unsigned long address, unsigned int pid);
65static inline void _tlbil_va(unsigned long address, unsigned int pid,
66 unsigned int tsize, unsigned int ind)
67{
68 __tlbil_va(address, pid);
69}
Benjamin Herrenschmidt2a4aca112008-12-18 19:13:42 +000070#endif /* CONIFG_8xx */
71
Dave Kleikampe7f75ad2010-03-05 10:43:12 +000072#if defined(CONFIG_PPC_BOOK3E) || defined(CONFIG_PPC_47x)
Benjamin Herrenschmidt25d21ad2009-07-23 23:15:47 +000073extern void _tlbivax_bcast(unsigned long address, unsigned int pid,
74 unsigned int tsize, unsigned int ind);
75#else
Benjamin Herrenschmidtd4e167d2009-07-23 23:15:24 +000076static inline void _tlbivax_bcast(unsigned long address, unsigned int pid,
77 unsigned int tsize, unsigned int ind)
Benjamin Herrenschmidt2a4aca112008-12-18 19:13:42 +000078{
79 BUG();
80}
Benjamin Herrenschmidt25d21ad2009-07-23 23:15:47 +000081#endif
Benjamin Herrenschmidt2a4aca112008-12-18 19:13:42 +000082
83#else /* CONFIG_PPC_MMU_NOHASH */
84
Benjamin Herrenschmidtee4f2ea2007-04-12 15:30:22 +100085extern void hash_preload(struct mm_struct *mm, unsigned long ea,
86 unsigned long access, unsigned long trap);
87
88
Benjamin Herrenschmidt2a4aca112008-12-18 19:13:42 +000089extern void _tlbie(unsigned long address);
90extern void _tlbia(void);
91
92#endif /* CONFIG_PPC_MMU_NOHASH */
93
Paul Mackerrasab1f9da2005-10-10 21:58:35 +100094#ifdef CONFIG_PPC32
Trent Piepho19f54652008-12-08 19:34:55 -080095
Paul Mackerras14cf11a2005-09-26 16:04:21 +100096extern void mapin_ram(void);
97extern int map_page(unsigned long va, phys_addr_t pa, int flags);
Becky Bruce7c5c4322008-06-14 09:41:42 +100098extern void setbat(int index, unsigned long virt, phys_addr_t phys,
Paul Mackerras14cf11a2005-09-26 16:04:21 +100099 unsigned int size, int flags);
Paul Mackerras14cf11a2005-09-26 16:04:21 +1000100
101extern int __map_without_bats;
Albert Herranzc5df7f72009-12-12 06:31:54 +0000102extern int __allow_ioremap_reserved;
Paul Mackerras14cf11a2005-09-26 16:04:21 +1000103extern unsigned long ioremap_base;
Paul Mackerras14cf11a2005-09-26 16:04:21 +1000104extern unsigned int rtas_data, rtas_size;
105
David Gibson8e561e72007-06-13 14:52:56 +1000106struct hash_pte;
107extern struct hash_pte *Hash, *Hash_end;
Paul Mackerras14cf11a2005-09-26 16:04:21 +1000108extern unsigned long Hash_size, Hash_mask;
Benjamin Herrenschmidt32a74942009-07-23 23:15:58 +0000109
110#endif /* CONFIG_PPC32 */
111
112#ifdef CONFIG_PPC64
113extern int map_kernel_page(unsigned long ea, unsigned long pa, int flags);
114#endif /* CONFIG_PPC64 */
Paul Mackerrasab1f9da2005-10-10 21:58:35 +1000115
David Gibson800fc3e2005-11-16 15:43:48 +1100116extern unsigned long ioremap_bot;
Paul Mackerrasab1f9da2005-10-10 21:58:35 +1000117extern unsigned long __max_low_memory;
Kumar Gala09b5e632008-04-16 05:52:25 +1000118extern phys_addr_t __initial_memory_limit_addr;
Stefan Roese2bf30162008-07-10 01:09:23 +1000119extern phys_addr_t total_memory;
120extern phys_addr_t total_lowmem;
Kumar Gala99c62dd72008-04-16 05:52:21 +1000121extern phys_addr_t memstart_addr;
Kumar Galad7917ba2008-04-16 05:52:22 +1000122extern phys_addr_t lowmem_end_addr;
Paul Mackerras14cf11a2005-09-26 16:04:21 +1000123
Albert Herranzde324002009-12-12 06:31:53 +0000124#ifdef CONFIG_WII
125extern unsigned long wii_hole_start;
126extern unsigned long wii_hole_size;
127
128extern unsigned long wii_mmu_mapin_mem2(unsigned long top);
129extern void wii_memory_fixups(void);
130#endif
131
Paul Mackerras14cf11a2005-09-26 16:04:21 +1000132/* ...and now those things that may be slightly different between processor
133 * architectures. -- Dan
134 */
135#if defined(CONFIG_8xx)
Paul Mackerras14cf11a2005-09-26 16:04:21 +1000136#define MMU_init_hw() do { } while(0)
Stephen Rothwellae4cec42009-12-14 09:04:24 -0700137#define mmu_mapin_ram(top) (0UL)
Paul Mackerras14cf11a2005-09-26 16:04:21 +1000138
139#elif defined(CONFIG_4xx)
Paul Mackerras14cf11a2005-09-26 16:04:21 +1000140extern void MMU_init_hw(void);
Stephen Rothwellae4cec42009-12-14 09:04:24 -0700141extern unsigned long mmu_mapin_ram(unsigned long top);
Paul Mackerras14cf11a2005-09-26 16:04:21 +1000142
Kumar Gala55fd7662009-10-16 18:48:40 -0500143#elif defined(CONFIG_PPC_FSL_BOOK3E)
144extern unsigned long map_mem_in_cams(unsigned long ram, int max_cam_idx);
Kumar Gala1dc91c32011-09-16 10:39:59 -0500145extern unsigned long calc_cam_sz(unsigned long ram, unsigned long virt,
146 phys_addr_t phys);
Kumar Gala55fd7662009-10-16 18:48:40 -0500147#ifdef CONFIG_PPC32
Paul Mackerras14cf11a2005-09-26 16:04:21 +1000148extern void MMU_init_hw(void);
Stephen Rothwellae4cec42009-12-14 09:04:24 -0700149extern unsigned long mmu_mapin_ram(unsigned long top);
Paul Mackerras14cf11a2005-09-26 16:04:21 +1000150extern void adjust_total_lowmem(void);
Kumar Gala55fd7662009-10-16 18:48:40 -0500151#endif
Kumar Gala78f62232010-05-13 14:38:21 -0500152extern void loadcam_entry(unsigned int index);
Paul Mackerras14cf11a2005-09-26 16:04:21 +1000153
Kumar Gala78f62232010-05-13 14:38:21 -0500154struct tlbcam {
155 u32 MAS0;
156 u32 MAS1;
157 unsigned long MAS2;
158 u32 MAS3;
159 u32 MAS7;
160};
Paul Mackerrasab1f9da2005-10-10 21:58:35 +1000161#elif defined(CONFIG_PPC32)
162/* anything 32-bit except 4xx or 8xx */
Paul Mackerras14cf11a2005-09-26 16:04:21 +1000163extern void MMU_init_hw(void);
Albert Herranzde324002009-12-12 06:31:53 +0000164extern unsigned long mmu_mapin_ram(unsigned long top);
Paul Mackerras14cf11a2005-09-26 16:04:21 +1000165#endif