f63837f058
The function flush_HPTE() is used in only one place, the implementation of DEBUG_PAGEALLOC on ppc32. It's actually a dup of flush_tlb_page() though it's -slightly- more efficient on hash based processors. We remove it and replace it by a direct call to the hash flush code on those processors and to flush_tlb_page() for everybody else. Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org> Signed-off-by: Paul Mackerras <paulus@samba.org>
77 lines
2.3 KiB
C
77 lines
2.3 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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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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#ifdef CONFIG_PPC32
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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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extern unsigned int num_tlbcam_entries;
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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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