d4e167da4c
We need to pass down whether the page is direct or indirect and we'll need to pass the page size to _tlbil_va and _tlbivax_bcast We also add a new low level _tlbil_pid_noind() which does a TLB flush by PID but avoids flushing indirect entries if possible This implements those new prototypes but defines them with inlines or macros so that no additional arguments are actually passed on current processors. Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
143 lines
3.9 KiB
C
143 lines
3.9 KiB
C
/*
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* Declarations of procedures and variables shared between files
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* in arch/ppc/mm/.
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*
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* Derived from arch/ppc/mm/init.c:
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* Copyright (C) 1995-1996 Gary Thomas (gdt@linuxppc.org)
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*
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* Modifications by Paul Mackerras (PowerMac) (paulus@cs.anu.edu.au)
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* and Cort Dougan (PReP) (cort@cs.nmt.edu)
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* Copyright (C) 1996 Paul Mackerras
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*
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* Derived from "arch/i386/mm/init.c"
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* Copyright (C) 1991, 1992, 1993, 1994 Linus Torvalds
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*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License
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* as published by the Free Software Foundation; either version
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* 2 of the License, or (at your option) any later version.
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*
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*/
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#include <linux/mm.h>
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#include <asm/tlbflush.h>
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#include <asm/mmu.h>
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#ifdef CONFIG_PPC_MMU_NOHASH
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/*
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* On 40x and 8xx, we directly inline tlbia and tlbivax
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*/
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#if defined(CONFIG_40x) || defined(CONFIG_8xx)
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static inline void _tlbil_all(void)
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{
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asm volatile ("sync; tlbia; isync" : : : "memory");
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}
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static inline void _tlbil_pid(unsigned int pid)
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{
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asm volatile ("sync; tlbia; isync" : : : "memory");
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}
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#define _tlbil_pid_noind(pid) _tlbil_pid(pid)
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#else /* CONFIG_40x || CONFIG_8xx */
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extern void _tlbil_all(void);
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extern void _tlbil_pid(unsigned int pid);
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#define _tlbil_pid_noind(pid) _tlbil_pid(pid)
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#endif /* !(CONFIG_40x || CONFIG_8xx) */
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/*
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* On 8xx, we directly inline tlbie, on others, it's extern
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*/
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#ifdef CONFIG_8xx
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static inline void _tlbil_va(unsigned long address, unsigned int pid,
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unsigned int tsize, unsigned int ind)
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{
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asm volatile ("tlbie %0; sync" : : "r" (address) : "memory");
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}
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#else /* CONFIG_8xx */
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extern void __tlbil_va(unsigned long address, unsigned int pid);
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static inline void _tlbil_va(unsigned long address, unsigned int pid,
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unsigned int tsize, unsigned int ind)
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{
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__tlbil_va(address, pid);
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}
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#endif /* CONIFG_8xx */
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/*
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* As of today, we don't support tlbivax broadcast on any
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* implementation. When that becomes the case, this will be
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* an extern.
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*/
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static inline void _tlbivax_bcast(unsigned long address, unsigned int pid,
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unsigned int tsize, unsigned int ind)
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{
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BUG();
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}
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#else /* CONFIG_PPC_MMU_NOHASH */
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extern void hash_preload(struct mm_struct *mm, unsigned long ea,
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unsigned long access, unsigned long trap);
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extern void _tlbie(unsigned long address);
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extern void _tlbia(void);
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#endif /* CONFIG_PPC_MMU_NOHASH */
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#ifdef CONFIG_PPC32
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struct tlbcam {
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u32 MAS0;
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u32 MAS1;
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u32 MAS2;
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u32 MAS3;
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u32 MAS7;
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};
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extern void mapin_ram(void);
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extern int map_page(unsigned long va, phys_addr_t pa, int flags);
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extern void setbat(int index, unsigned long virt, phys_addr_t phys,
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unsigned int size, int flags);
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extern void settlbcam(int index, unsigned long virt, phys_addr_t phys,
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unsigned int size, int flags, unsigned int pid);
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extern void invalidate_tlbcam_entry(int index);
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extern int __map_without_bats;
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extern unsigned long ioremap_base;
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extern unsigned int rtas_data, rtas_size;
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struct hash_pte;
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extern struct hash_pte *Hash, *Hash_end;
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extern unsigned long Hash_size, Hash_mask;
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#endif
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extern unsigned long ioremap_bot;
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extern unsigned long __max_low_memory;
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extern phys_addr_t __initial_memory_limit_addr;
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extern phys_addr_t total_memory;
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extern phys_addr_t total_lowmem;
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extern phys_addr_t memstart_addr;
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extern phys_addr_t lowmem_end_addr;
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/* ...and now those things that may be slightly different between processor
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* architectures. -- Dan
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*/
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#if defined(CONFIG_8xx)
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#define MMU_init_hw() do { } while(0)
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#define mmu_mapin_ram() (0UL)
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#elif defined(CONFIG_4xx)
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extern void MMU_init_hw(void);
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extern unsigned long mmu_mapin_ram(void);
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#elif defined(CONFIG_FSL_BOOKE)
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extern void MMU_init_hw(void);
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extern unsigned long mmu_mapin_ram(void);
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extern void adjust_total_lowmem(void);
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#elif defined(CONFIG_PPC32)
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/* anything 32-bit except 4xx or 8xx */
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extern void MMU_init_hw(void);
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extern unsigned long mmu_mapin_ram(void);
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#endif
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