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      1 /*	$NetBSD: tlb.h,v 1.5 2021/10/02 14:28:05 skrll Exp $	*/
      2 /*-
      3  * Copyright (c) 2011 The NetBSD Foundation, Inc.
      4  * All rights reserved.
      5  *
      6  * This code is derived from software contributed to The NetBSD Foundation
      7  * by Matt Thomas of 3am Software Foundry.
      8  *
      9  * Redistribution and use in source and binary forms, with or without
     10  * modification, are permitted provided that the following conditions
     11  * are met:
     12  * 1. Redistributions of source code must retain the above copyright
     13  *    notice, this list of conditions and the following disclaimer.
     14  * 2. Redistributions in binary form must reproduce the above copyright
     15  *    notice, this list of conditions and the following disclaimer in the
     16  *    documentation and/or other materials provided with the distribution.
     17  *
     18  * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
     19  * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
     20  * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
     21  * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
     22  * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
     23  * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
     24  * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
     25  * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
     26  * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
     27  * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
     28  * POSSIBILITY OF SUCH DAMAGE.
     29  */
     30 #ifndef	_UVM_PMAP_TLB_H_
     31 #define	_UVM_PMAP_TLB_H_
     32 
     33 #if defined(_KERNEL) || defined(_KMEMUSER)
     34 
     35 struct tlbmask;
     36 struct pmap;
     37 
     38 typedef bool	(*tlb_walkfunc_t)(void *, vaddr_t, tlb_asid_t, pt_entry_t);
     39 
     40 struct tlb_md_ops {
     41 	void	(*md_tlb_set_asid)(tlb_asid_t);
     42 	tlb_asid_t
     43 		(*md_tlb_get_asid)(void);
     44 	void	(*md_tlb_invalidate_all)(void);
     45 	void	(*md_tlb_invalidate_globals)(void);
     46 	void	(*md_tlb_invalidate_asids)(tlb_asid_t, tlb_asid_t);
     47 	void	(*md_tlb_invalidate_addr)(vaddr_t, tlb_asid_t);
     48 	bool	(*md_tlb_update_addr)(vaddr_t, tlb_asid_t, pt_entry_t, bool);
     49 	void	(*md_tlb_read_entry)(size_t, struct tlbmask *);
     50 	void	(*md_tlb_write_entry)(size_t, const struct tlbmask *);
     51 	u_int	(*md_tlb_record_asids)(u_long *, tlb_asid_t);
     52 	void	(*md_tlb_dump)(void (*)(const char *, ...));
     53 	void	(*md_tlb_walk)(void *, tlb_walkfunc_t);
     54 };
     55 
     56 tlb_asid_t
     57 	tlb_get_asid(void);
     58 void	tlb_set_asid(tlb_asid_t, struct pmap *);
     59 void	tlb_invalidate_all(void);
     60 void	tlb_invalidate_globals(void);
     61 void	tlb_invalidate_asids(tlb_asid_t, tlb_asid_t);
     62 void	tlb_invalidate_addr(vaddr_t, tlb_asid_t);
     63 bool	tlb_update_addr(vaddr_t, tlb_asid_t, pt_entry_t, bool);
     64 u_int	tlb_record_asids(u_long *, tlb_asid_t);
     65 void	tlb_enter_addr(size_t, const struct tlbmask *);
     66 void	tlb_read_entry(size_t, struct tlbmask *);
     67 void	tlb_write_entry(size_t, const struct tlbmask *);
     68 void	tlb_walk(void *, tlb_walkfunc_t);
     69 void	tlb_dump(void (*)(const char *, ...));
     70 
     71 #endif /* _KERNEL || _KMEMUSER */
     72 
     73 #endif /* _UVM_PMAP_TLB_H_ */
     74