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      1 /*	$NetBSD: mmu.h,v 1.11 2022/02/23 21:54:40 andvar Exp $	*/
      2 
      3 /*-
      4  * Copyright (c) 2002 The NetBSD Foundation, Inc.
      5  * All rights reserved.
      6  *
      7  * This code is derived from software contributed to The NetBSD Foundation
      8  * by UCHIYAMA Yasushi.
      9  *
     10  * Redistribution and use in source and binary forms, with or without
     11  * modification, are permitted provided that the following conditions
     12  * are met:
     13  * 1. Redistributions of source code must retain the above copyright
     14  *    notice, this list of conditions and the following disclaimer.
     15  * 2. Redistributions in binary form must reproduce the above copyright
     16  *    notice, this list of conditions and the following disclaimer in the
     17  *    documentation and/or other materials provided with the distribution.
     18  *
     19  * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
     20  * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
     21  * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
     22  * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
     23  * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
     24  * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
     25  * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
     26  * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
     27  * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
     28  * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
     29  * POSSIBILITY OF SUCH DAMAGE.
     30  */
     31 
     32 #ifndef _SH3_MMU_H_
     33 #define	_SH3_MMU_H_
     34 
     35 /*
     36  * Initialize routines.
     37  *	sh_mmu_init		Assign function vector. Don't access hardware.
     38  *				Call as early as possible.
     39  *	sh_mmu_start		Reset TLB entry, set default ASID, and start to
     40  *				translate addresses.
     41  *				Call after exception vector was installed.
     42  *
     43  * TLB access ops.
     44  *	sh_tlb_invalidate_addr	invalidate TLB entries for given
     45  *				virtual addr with ASID.
     46  *	sh_tlb_invalidate_asid	invalidate TLB entries for given ASID.
     47  *	sh_tlb_invalidate_all	invalidate all non-wired TLB entries.
     48  *	sh_tlb_set_asid		set ASID.
     49  *	sh_tlb_update		load new PTE to TLB.
     50  *
     51  */
     52 
     53 void sh_mmu_init(void);
     54 void sh_mmu_information(void);
     55 void sh_tlb_set_asid(int);
     56 
     57 #ifdef SH3
     58 void sh3_mmu_start(void);
     59 void sh3_tlb_invalidate_addr(int, vaddr_t);
     60 void sh3_tlb_invalidate_asid(int);
     61 void sh3_tlb_invalidate_all(void);
     62 void sh3_tlb_update(int, vaddr_t, uint32_t);
     63 #endif
     64 
     65 #ifdef SH4
     66 void sh4_mmu_start(void);
     67 void sh4_tlb_invalidate_addr(int, vaddr_t);
     68 void sh4_tlb_invalidate_asid(int);
     69 void sh4_tlb_invalidate_all(void);
     70 void sh4_tlb_update(int, vaddr_t, uint32_t);
     71 #endif
     72 
     73 
     74 #if defined(SH3) && defined(SH4)
     75 extern uint32_t __sh_PTEH;
     76 
     77 extern void (*__sh_mmu_start)(void);
     78 extern void (*__sh_tlb_invalidate_addr)(int, vaddr_t);
     79 extern void (*__sh_tlb_invalidate_asid)(int);
     80 extern void (*__sh_tlb_invalidate_all)(void);
     81 extern void (*__sh_tlb_update)(int, vaddr_t, uint32_t);
     82 
     83 #define	sh_mmu_start()			(*__sh_mmu_start)()
     84 #define	sh_tlb_invalidate_addr(a, va)	(*__sh_tlb_invalidate_addr)(a, va)
     85 #define	sh_tlb_invalidate_asid(a)	(*__sh_tlb_invalidate_asid)(a)
     86 #define	sh_tlb_invalidate_all()		(*__sh_tlb_invalidate_all)()
     87 #define	sh_tlb_update(a, va, pte)	(*__sh_tlb_update)(a, va, pte)
     88 
     89 #elif defined(SH3)
     90 
     91 #define	sh_mmu_start()			sh3_mmu_start()
     92 #define	sh_tlb_invalidate_addr(a, va)	sh3_tlb_invalidate_addr(a, va)
     93 #define	sh_tlb_invalidate_asid(a)	sh3_tlb_invalidate_asid(a)
     94 #define	sh_tlb_invalidate_all()		sh3_tlb_invalidate_all()
     95 #define	sh_tlb_update(a, va, pte)	sh3_tlb_update(a, va, pte)
     96 
     97 #elif defined(SH4)
     98 
     99 #define	sh_mmu_start()			sh4_mmu_start()
    100 #define	sh_tlb_invalidate_addr(a, va)	sh4_tlb_invalidate_addr(a, va)
    101 #define	sh_tlb_invalidate_asid(a)	sh4_tlb_invalidate_asid(a)
    102 #define	sh_tlb_invalidate_all()		sh4_tlb_invalidate_all()
    103 #define	sh_tlb_update(a, va, pte)	sh4_tlb_update(a, va, pte)
    104 
    105 #endif
    106 
    107 #endif /* !_SH3_MMU_H_ */
    108