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mmu.h revision 1.5.28.1 
      1 /*	$NetBSD: mmu.h,v 1.5.28.1 2006/06/21 14:55:31 yamt 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  * 3. All advertising materials mentioning features or use of this software
     19  *    must display the following acknowledgement:
     20  *        This product includes software developed by the NetBSD
     21  *        Foundation, Inc. and its contributors.
     22  * 4. Neither the name of The NetBSD Foundation nor the names of its
     23  *    contributors may be used to endorse or promote products derived
     24  *    from this software without specific prior written permission.
     25  *
     26  * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
     27  * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
     28  * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
     29  * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
     30  * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
     31  * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
     32  * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
     33  * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
     34  * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
     35  * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
     36  * POSSIBILITY OF SUCH DAMAGE.
     37  */
     38 
     39 #ifndef _SH3_MMU_H_
     40 #define	_SH3_MMU_H_
     41 
     42 /*
     43  * Initialize routines.
     44  *	sh_mmu_init		Assign function vector. Don't access hardware.
     45  *				Call as early as possible.
     46  *	sh_mmu_start		Reset TLB entry, set default ASID, and start to
     47  *				translate addresses.
     48  *				Call after exception vector was installed.
     49  *
     50  * TLB access ops.
     51  *	sh_tlb_invalidate_addr	invalidate TLB entris for given
     52  *				virtual addr with ASID.
     53  *	sh_tlb_invalidate_asid	invalidate TLB entries for given ASID.
     54  *	sh_tlb_invalidate_all	invalidate all non-wired TLB entries.
     55  *	sh_tlb_set_asid		set ASID.
     56  *	sh_tlb_update		load new PTE to TLB.
     57  *
     58  */
     59 
     60 void sh_mmu_init(void);
     61 void sh_mmu_information(void);
     62 void sh_tlb_set_asid(int);
     63 
     64 #ifdef SH3
     65 void sh3_mmu_start(void);
     66 void sh3_tlb_invalidate_addr(int, vaddr_t);
     67 void sh3_tlb_invalidate_asid(int);
     68 void sh3_tlb_invalidate_all(void);
     69 void sh3_tlb_update(int, vaddr_t, uint32_t);
     70 #endif
     71 
     72 #ifdef SH4
     73 void sh4_mmu_start(void);
     74 void sh4_tlb_invalidate_addr(int, vaddr_t);
     75 void sh4_tlb_invalidate_asid(int);
     76 void sh4_tlb_invalidate_all(void);
     77 void sh4_tlb_update(int, vaddr_t, uint32_t);
     78 #endif
     79 
     80 
     81 #if defined(SH3) && defined(SH4)
     82 extern uint32_t __sh_PTEH;
     83 
     84 extern void (*__sh_mmu_start)(void);
     85 extern void (*__sh_tlb_invalidate_addr)(int, vaddr_t);
     86 extern void (*__sh_tlb_invalidate_asid)(int);
     87 extern void (*__sh_tlb_invalidate_all)(void);
     88 extern void (*__sh_tlb_update)(int, vaddr_t, uint32_t);
     89 
     90 #define	sh_mmu_start()			(*__sh_mmu_start)()
     91 #define	sh_tlb_invalidate_addr(a, va)	(*__sh_tlb_invalidate_addr)(a, va)
     92 #define	sh_tlb_invalidate_asid(a)	(*__sh_tlb_invalidate_asid)(a)
     93 #define	sh_tlb_invalidate_all()		(*__sh_tlb_invalidate_all)()
     94 #define	sh_tlb_update(a, va, pte)	(*__sh_tlb_update)(a, va, pte)
     95 
     96 #elif defined(SH3)
     97 
     98 #define	sh_mmu_start()			sh3_mmu_start()
     99 #define	sh_tlb_invalidate_addr(a, va)	sh3_tlb_invalidate_addr(a, va)
    100 #define	sh_tlb_invalidate_asid(a)	sh3_tlb_invalidate_asid(a)
    101 #define	sh_tlb_invalidate_all()		sh3_tlb_invalidate_all()
    102 #define	sh_tlb_update(a, va, pte)	sh3_tlb_update(a, va, pte)
    103 
    104 #elif defined(SH4)
    105 
    106 #define	sh_mmu_start()			sh4_mmu_start()
    107 #define	sh_tlb_invalidate_addr(a, va)	sh4_tlb_invalidate_addr(a, va)
    108 #define	sh_tlb_invalidate_asid(a)	sh4_tlb_invalidate_asid(a)
    109 #define	sh_tlb_invalidate_all()		sh4_tlb_invalidate_all()
    110 #define	sh_tlb_update(a, va, pte)	sh4_tlb_update(a, va, pte)
    111 
    112 #endif
    113 
    114 #endif /* !_SH3_MMU_H_ */
    115