tlb_64.h

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/*
 * include/asm-sh/tlb_64.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_SH_TLB_64_H
#define __ASM_SH_TLB_64_H

/* 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__

#define for_each_dtlb_entry(tlb)        \
    for (tlb  = cpu_data->dtlb.first;   \
         tlb <= cpu_data->dtlb.last;    \
         tlb += cpu_data->dtlb.step)

#define for_each_itlb_entry(tlb)        \
    for (tlb  = cpu_data->itlb.first;   \
         tlb <= cpu_data->itlb.last;    \
         tlb += cpu_data->itlb.step)

static inline void __flush_tlb_slot(unsigned long long slot)
{
    __asm__ __volatile__ ("putcfg %0, 0, r63\n" : : "r" (slot));
}

#ifdef CONFIG_MMU
/* arch/sh64/mm/tlb.c */
int sh64_tlb_init(void);
unsigned long long sh64_next_free_dtlb_entry(void);
unsigned long long sh64_get_wired_dtlb_entry(void);
int sh64_put_wired_dtlb_entry(unsigned long long entry);
void sh64_setup_tlb_slot(unsigned long long config_addr, unsigned long eaddr,
             unsigned long asid, unsigned long paddr);
void sh64_teardown_tlb_slot(unsigned long long config_addr);
#else
#define sh64_tlb_init()                 do { } while (0)
#define sh64_next_free_dtlb_entry()         (0)
#define sh64_get_wired_dtlb_entry()         (0)
#define sh64_put_wired_dtlb_entry(entry)        do { } while (0)
#define sh64_setup_tlb_slot(conf, virt, asid, phys) do { } while (0)
#define sh64_teardown_tlb_slot(addr)            do { } while (0)
#endif /* CONFIG_MMU */
#endif /* __ASSEMBLY__ */
#endif /* __ASM_SH_TLB_64_H */