sys/sun4v/include/tlb.h

   1 /*-
   2  * Copyright (c) 2001 Jake Burkholder.
   3  * All rights reserved.
   4  *
   5  * Redistribution and use in source and binary forms, with or without
   6  * modification, are permitted provided that the following conditions
   7  * are met:
   8  * 1. Redistributions of source code must retain the above copyright
   9  *    notice, this list of conditions and the following disclaimer.
  10  * 2. Redistributions in binary form must reproduce the above copyright
  11  *    notice, this list of conditions and the following disclaimer in the
  12  *    documentation and/or other materials provided with the distribution.
  13  *
  14  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
  15  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
  16  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
  17  * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
  18  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
  19  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
  20  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
  21  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
  22  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
  23  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
  24  * SUCH DAMAGE.
  25  *
  26  * $FreeBSD$
  27  */
  28
  29 #ifndef _MACHINE_TLB_H_
  30 #define _MACHINE_TLB_H_
  31
  32 #define TLB_DIRECT_ADDRESS_BITS         (43)
  33 #define TLB_DIRECT_PAGE_BITS            (PAGE_SHIFT_4M)
  34
  35 #define TLB_DIRECT_ADDRESS_MASK         ((1UL << TLB_DIRECT_ADDRESS_BITS) - 1)
  36 #define TLB_DIRECT_PAGE_MASK            ((1UL << TLB_DIRECT_PAGE_BITS) - 1)
  37
  38 #define TLB_PHYS_TO_DIRECT(pa) \
  39         ((pa) | VM_MIN_DIRECT_ADDRESS)
  40 #define TLB_DIRECT_TO_PHYS(va) \
  41         ((va) & TLB_DIRECT_ADDRESS_MASK)
  42 #define TLB_DIRECT_TO_TTE_MASK \
  43         (TD_V | TD_4M | (TLB_DIRECT_ADDRESS_MASK - TLB_DIRECT_PAGE_MASK))
  44
  45 #define TLB_DAR_SLOT_SHIFT              (3)
  46 #define TLB_DAR_SLOT(slot)              ((slot) << TLB_DAR_SLOT_SHIFT)
  47
  48 #define TAR_VPN_SHIFT                   (13)
  49 #define TAR_CTX_MASK                    ((1 << TAR_VPN_SHIFT) - 1)
  50
  51 #define TLB_TAR_VA(va)                  ((va) & ~TAR_CTX_MASK)
  52 #define TLB_TAR_CTX(ctx)                ((ctx) & TAR_CTX_MASK)
  53
  54 #define TLB_DEMAP_ID_SHIFT              (4)
  55 #define TLB_DEMAP_ID_PRIMARY            (0)
  56 #define TLB_DEMAP_ID_SECONDARY          (1)
  57 #define TLB_DEMAP_ID_NUCLEUS            (2)
  58
  59 #define TLB_DEMAP_TYPE_SHIFT            (6)
  60 #define TLB_DEMAP_TYPE_PAGE             (0)
  61 #define TLB_DEMAP_TYPE_CONTEXT          (1)
  62
  63 #define TLB_DEMAP_VA(va)                ((va) & ~PAGE_MASK)
  64 #define TLB_DEMAP_ID(id)                ((id) << TLB_DEMAP_ID_SHIFT)
  65 #define TLB_DEMAP_TYPE(type)            ((type) << TLB_DEMAP_TYPE_SHIFT)
  66
  67 #define TLB_DEMAP_PAGE                  (TLB_DEMAP_TYPE(TLB_DEMAP_TYPE_PAGE))
  68 #define TLB_DEMAP_CONTEXT               (TLB_DEMAP_TYPE(TLB_DEMAP_TYPE_CONTEXT))
  69
  70 #define TLB_DEMAP_PRIMARY               (TLB_DEMAP_ID(TLB_DEMAP_ID_PRIMARY))
  71 #define TLB_DEMAP_SECONDARY             (TLB_DEMAP_ID(TLB_DEMAP_ID_SECONDARY))
  72 #define TLB_DEMAP_NUCLEUS               (TLB_DEMAP_ID(TLB_DEMAP_ID_NUCLEUS))
  73
  74 #define TLB_CTX_KERNEL                  (0)
  75 #define TLB_CTX_USER_MIN                (1)
  76 #define TLB_CTX_USER_MAX                (8192)
  77
  78 typedef void tlb_flush_user_t(void);
  79
  80 struct pmap;
  81 struct tlb_entry;
  82
  83 extern int kernel_tlb_slots;
  84 extern struct tlb_entry *kernel_tlbs;
  85
  86 void    tlb_context_demap(struct pmap *pm);
  87 void    tlb_page_demap(struct pmap *pm, vm_offset_t va);
  88 void    tlb_range_demap(struct pmap *pm, vm_offset_t start, vm_offset_t end);
  89
  90 tlb_flush_user_t cheetah_tlb_flush_user;
  91 tlb_flush_user_t spitfire_tlb_flush_user;
  92
  93 extern tlb_flush_user_t *tlb_flush_user;
  94
  95 #endif /* !_MACHINE_TLB_H_ */