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