sys/uvm/pmap/tlb.h

   1 /*      $NetBSD: tlb.h,v 1.2 2015/09/21 15:50:19 matt 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_PMAP_TLB_TLB_H_
  31 #define _UVM_PMAP_PMAP_TLB_TLB_H_
  32
  33 #if defined(_KERNEL) || defined(_KMEMUSER)
  34
  35 struct tlbmask;
  36
  37 struct tlb_md_ops {
  38         void    (*md_tlb_set_asid)(tlb_asid_t);
  39         tlb_asid_t
  40                 (*md_tlb_get_asid)(void);
  41         void    (*md_tlb_invalidate_all)(void);
  42         void    (*md_tlb_invalidate_globals)(void);
  43         void    (*md_tlb_invalidate_asids)(tlb_asid_t, tlb_asid_t);
  44         void    (*md_tlb_invalidate_addr)(vaddr_t, tlb_asid_t);
  45         bool    (*md_tlb_update_addr)(vaddr_t, tlb_asid_t, pt_entry_t, bool);
  46         void    (*md_tlb_read_entry)(size_t, struct tlbmask *);
  47         void    (*md_tlb_write_entry)(size_t, const struct tlbmask *);
  48         u_int   (*md_tlb_record_asids)(u_long *);
  49         void    (*md_tlb_dump)(void (*)(const char *, ...));
  50         void    (*md_tlb_walk)(void *, bool (*)(void *, vaddr_t, tlb_asid_t,
  51                     pt_entry_t));
  52 };
  53
  54 tlb_asid_t
  55         tlb_get_asid(void);
  56 void    tlb_set_asid(tlb_asid_t);
  57 void    tlb_invalidate_all(void);
  58 void    tlb_invalidate_globals(void);
  59 void    tlb_invalidate_asids(tlb_asid_t, tlb_asid_t);
  60 void    tlb_invalidate_addr(vaddr_t, tlb_asid_t);
  61 bool    tlb_update_addr(vaddr_t, tlb_asid_t, pt_entry_t, bool);
  62 u_int   tlb_record_asids(u_long *);
  63 void    tlb_enter_addr(size_t, const struct tlbmask *);
  64 void    tlb_read_entry(size_t, struct tlbmask *);
  65 void    tlb_write_entry(size_t, const struct tlbmask *);
  66 void    tlb_walk(void *, bool (*)(void *, vaddr_t, tlb_asid_t, pt_entry_t));
  67 void    tlb_dump(void (*)(const char *, ...));
  68
  69 #endif /* _KERNEL || _KMEMUSER */
  70
  71 #endif /* !_UVM_PMAP_PMAP_TLB_TLB_H_ */