93 lines
2.3 KiB
C
93 lines
2.3 KiB
C
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/*
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* include/asm-sh64/tlb.h
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*
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* Copyright (C) 2003 Paul Mundt
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*
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* This file is subject to the terms and conditions of the GNU General Public
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* License. See the file "COPYING" in the main directory of this archive
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* for more details.
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*
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*/
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#ifndef __ASM_SH64_TLB_H
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#define __ASM_SH64_TLB_H
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/*
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* Note! These are mostly unused, we just need the xTLB_LAST_VAR_UNRESTRICTED
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* for head.S! Once this limitation is gone, we can clean the rest of this up.
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*/
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/* ITLB defines */
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#define ITLB_FIXED 0x00000000 /* First fixed ITLB, see head.S */
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#define ITLB_LAST_VAR_UNRESTRICTED 0x000003F0 /* Last ITLB */
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/* DTLB defines */
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#define DTLB_FIXED 0x00800000 /* First fixed DTLB, see head.S */
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#define DTLB_LAST_VAR_UNRESTRICTED 0x008003F0 /* Last DTLB */
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#ifndef __ASSEMBLY__
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/**
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* for_each_dtlb_entry
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*
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* @tlb: TLB entry
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*
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* Iterate over free (non-wired) DTLB entries
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*/
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#define for_each_dtlb_entry(tlb) \
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for (tlb = cpu_data->dtlb.first; \
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tlb <= cpu_data->dtlb.last; \
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tlb += cpu_data->dtlb.step)
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/**
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* for_each_itlb_entry
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*
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* @tlb: TLB entry
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*
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* Iterate over free (non-wired) ITLB entries
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*/
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#define for_each_itlb_entry(tlb) \
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for (tlb = cpu_data->itlb.first; \
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tlb <= cpu_data->itlb.last; \
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tlb += cpu_data->itlb.step)
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/**
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* __flush_tlb_slot
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*
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* @slot: Address of TLB slot.
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*
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* Flushes TLB slot @slot.
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*/
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static inline void __flush_tlb_slot(unsigned long long slot)
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{
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__asm__ __volatile__ ("putcfg %0, 0, r63\n" : : "r" (slot));
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}
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/* arch/sh64/mm/tlb.c */
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extern int sh64_tlb_init(void);
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extern unsigned long long sh64_next_free_dtlb_entry(void);
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extern unsigned long long sh64_get_wired_dtlb_entry(void);
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extern int sh64_put_wired_dtlb_entry(unsigned long long entry);
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extern void sh64_setup_tlb_slot(unsigned long long config_addr, unsigned long eaddr, unsigned long asid, unsigned long paddr);
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extern void sh64_teardown_tlb_slot(unsigned long long config_addr);
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#define tlb_start_vma(tlb, vma) \
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flush_cache_range(vma, vma->vm_start, vma->vm_end)
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#define tlb_end_vma(tlb, vma) \
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flush_tlb_range(vma, vma->vm_start, vma->vm_end)
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#define __tlb_remove_tlb_entry(tlb, pte, address) do { } while (0)
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/*
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* Flush whole TLBs for MM
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*/
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#define tlb_flush(tlb) flush_tlb_mm((tlb)->mm)
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#include <asm-generic/tlb.h>
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#endif /* __ASSEMBLY__ */
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#endif /* __ASM_SH64_TLB_H */
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