tlb.h

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    1 /*-
    2  * Copyright (c) 2001 Jake Burkholder.
    3  * Copyright (c) 2008, 2010 Marius Strobl <marius@FreeBSD.org>
    4  * All rights reserved.
    5  *
    6  * Redistribution and use in source and binary forms, with or without
    7  * modification, are permitted provided that the following conditions
    8  * are met:
    9  * 1. Redistributions of source code must retain the above copyright
   10  *    notice, this list of conditions and the following disclaimer.
   11  * 2. Redistributions in binary form must reproduce the above copyright
   12  *    notice, this list of conditions and the following disclaimer in the
   13  *    documentation and/or other materials provided with the distribution.
   14  *
   15  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
   16  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
   17  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
   18  * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
   19  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
   20  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
   21  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
   22  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
   23  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
   24  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
   25  * SUCH DAMAGE.
   26  *
   27  * $FreeBSD: releng/8.2/sys/sparc64/include/tlb.h 206009 2010-03-31 21:57:48Z marius $
   28  */
   29 
   30 #ifndef _MACHINE_TLB_H_
   31 #define _MACHINE_TLB_H_
   32 
   33 #define TLB_DIRECT_ADDRESS_BITS         (43)
   34 #define TLB_DIRECT_PAGE_BITS            (PAGE_SHIFT_4M)
   35 
   36 #define TLB_DIRECT_ADDRESS_MASK         ((1UL << TLB_DIRECT_ADDRESS_BITS) - 1)
   37 #define TLB_DIRECT_PAGE_MASK            ((1UL << TLB_DIRECT_PAGE_BITS) - 1)
   38 
   39 #define TLB_PHYS_TO_DIRECT(pa)                                          \
   40         ((pa) | VM_MIN_DIRECT_ADDRESS)
   41 #define TLB_DIRECT_TO_PHYS(va)                                          \
   42         ((va) & TLB_DIRECT_ADDRESS_MASK)
   43 #define TLB_DIRECT_TO_TTE_MASK                                          \
   44         (TD_V | TD_4M | (TLB_DIRECT_ADDRESS_MASK - TLB_DIRECT_PAGE_MASK))
   45 
   46 #define TLB_DAR_SLOT_SHIFT              (3)
   47 #define TLB_DAR_SLOT(slot)              ((slot) << TLB_DAR_SLOT_SHIFT)
   48 
   49 #define TAR_VPN_SHIFT                   (13)
   50 #define TAR_CTX_MASK                    ((1 << TAR_VPN_SHIFT) - 1)
   51 
   52 #define TLB_TAR_VA(va)                  ((va) & ~TAR_CTX_MASK)
   53 #define TLB_TAR_CTX(ctx)                ((ctx) & TAR_CTX_MASK)
   54 
   55 #define TLB_CXR_CTX_BITS                (13)
   56 #define TLB_CXR_CTX_MASK                                                \
   57         (((1UL << TLB_CXR_CTX_BITS) - 1) << TLB_CXR_CTX_SHIFT)
   58 #define TLB_CXR_CTX_SHIFT               (0)
   59 #define TLB_CXR_PGSZ_BITS               (3)
   60 #define TLB_CXR_PGSZ_MASK               (~TLB_CXR_CTX_MASK)
   61 #define TLB_PCXR_N_IPGSZ0_SHIFT         (53)    /* SPARC64 VI, VII, VIIIfx */
   62 #define TLB_PCXR_N_IPGSZ1_SHIFT         (50)    /* SPARC64 VI, VII, VIIIfx */
   63 #define TLB_PCXR_N_PGSZ0_SHIFT          (61)
   64 #define TLB_PCXR_N_PGSZ1_SHIFT          (58)
   65 #define TLB_PCXR_N_PGSZ_I_SHIFT         (55)    /* US-IV+ */
   66 #define TLB_PCXR_P_IPGSZ0_SHIFT         (24)    /* SPARC64 VI, VII, VIIIfx */
   67 #define TLB_PCXR_P_IPGSZ1_SHIFT         (27)    /* SPARC64 VI, VII, VIIIfx */
   68 #define TLB_PCXR_P_PGSZ0_SHIFT          (16)
   69 #define TLB_PCXR_P_PGSZ1_SHIFT          (19)
   70 /*
   71  * Note that the US-IV+ documentation appears to have TLB_PCXR_P_PGSZ_I_SHIFT
   72  * and TLB_PCXR_P_PGSZ0_SHIFT erroneously inverted.
   73  */
   74 #define TLB_PCXR_P_PGSZ_I_SHIFT         (22)    /* US-IV+ */
   75 #define TLB_SCXR_S_PGSZ1_SHIFT          (19)
   76 #define TLB_SCXR_S_PGSZ0_SHIFT          (16)
   77 
   78 #define TLB_TAE_PGSZ_BITS               (3)
   79 #define TLB_TAE_PGSZ0_MASK                                              \
   80         (((1UL << TLB_TAE_PGSZ_BITS) - 1) << TLB_TAE_PGSZ0_SHIFT)
   81 #define TLB_TAE_PGSZ1_MASK                                              \
   82         (((1UL << TLB_TAE_PGSZ_BITS) - 1) << TLB_TAE_PGSZ1_SHIFT)
   83 #define TLB_TAE_PGSZ0_SHIFT             (16)
   84 #define TLB_TAE_PGSZ1_SHIFT             (19)
   85 
   86 #define TLB_DEMAP_ID_SHIFT              (4)
   87 #define TLB_DEMAP_ID_PRIMARY            (0)
   88 #define TLB_DEMAP_ID_SECONDARY          (1)
   89 #define TLB_DEMAP_ID_NUCLEUS            (2)
   90 
   91 #define TLB_DEMAP_TYPE_SHIFT            (6)
   92 #define TLB_DEMAP_TYPE_PAGE             (0)
   93 #define TLB_DEMAP_TYPE_CONTEXT          (1)
   94 #define TLB_DEMAP_TYPE_ALL              (2)     /* US-III and beyond only */
   95 
   96 #define TLB_DEMAP_VA(va)                ((va) & ~PAGE_MASK)
   97 #define TLB_DEMAP_ID(id)                ((id) << TLB_DEMAP_ID_SHIFT)
   98 #define TLB_DEMAP_TYPE(type)            ((type) << TLB_DEMAP_TYPE_SHIFT)
   99 
  100 #define TLB_DEMAP_PAGE                  (TLB_DEMAP_TYPE(TLB_DEMAP_TYPE_PAGE))
  101 #define TLB_DEMAP_CONTEXT               (TLB_DEMAP_TYPE(TLB_DEMAP_TYPE_CONTEXT))
  102 #define TLB_DEMAP_ALL                   (TLB_DEMAP_TYPE(TLB_DEMAP_TYPE_ALL))
  103 
  104 #define TLB_DEMAP_PRIMARY               (TLB_DEMAP_ID(TLB_DEMAP_ID_PRIMARY))
  105 #define TLB_DEMAP_SECONDARY             (TLB_DEMAP_ID(TLB_DEMAP_ID_SECONDARY))
  106 #define TLB_DEMAP_NUCLEUS               (TLB_DEMAP_ID(TLB_DEMAP_ID_NUCLEUS))
  107 
  108 #define TLB_CTX_KERNEL                  (0)
  109 #define TLB_CTX_USER_MIN                (1)
  110 #define TLB_CTX_USER_MAX                (8192)
  111 
  112 #define MMU_SFSR_ASI_SHIFT              (16)
  113 #define MMU_SFSR_FT_SHIFT               (7)
  114 #define MMU_SFSR_E_SHIFT                (6)
  115 #define MMU_SFSR_CT_SHIFT               (4)
  116 #define MMU_SFSR_PR_SHIFT               (3)
  117 #define MMU_SFSR_W_SHIFT                (2)
  118 #define MMU_SFSR_OW_SHIFT               (1)
  119 #define MMU_SFSR_FV_SHIFT               (0)
  120 
  121 #define MMU_SFSR_ASI_SIZE               (8)
  122 #define MMU_SFSR_FT_SIZE                (6)
  123 #define MMU_SFSR_CT_SIZE                (2)
  124 
  125 #define MMU_SFSR_GET_ASI(sfsr)                                          \
  126         (((sfsr) >> MMU_SFSR_ASI_SHIFT) & ((1UL << MMU_SFSR_ASI_SIZE) - 1))
  127 #define MMU_SFSR_GET_FT(sfsr)                                           \
  128         (((sfsr) >> MMU_SFSR_FT_SHIFT) & ((1UL << MMU_SFSR_FT_SIZE) - 1))
  129 #define MMU_SFSR_GET_CT(sfsr)                                           \
  130         (((sfsr) >> MMU_SFSR_CT_SHIFT) & ((1UL << MMU_SFSR_CT_SIZE) - 1))
  131 
  132 #define MMU_SFSR_E                      (1UL << MMU_SFSR_E_SHIFT)
  133 #define MMU_SFSR_PR                     (1UL << MMU_SFSR_PR_SHIFT)
  134 #define MMU_SFSR_W                      (1UL << MMU_SFSR_W_SHIFT)
  135 #define MMU_SFSR_OW                     (1UL << MMU_SFSR_OW_SHIFT)
  136 #define MMU_SFSR_FV                     (1UL << MMU_SFSR_FV_SHIFT)
  137 
  138 typedef void tlb_flush_nonlocked_t(void);
  139 typedef void tlb_flush_user_t(void);
  140 
  141 struct pmap;
  142 struct tlb_entry;
  143 
  144 extern int dtlb_slots;
  145 extern int itlb_slots;
  146 extern int kernel_tlb_slots;
  147 extern struct tlb_entry *kernel_tlbs;
  148 
  149 void    tlb_context_demap(struct pmap *pm);
  150 void    tlb_page_demap(struct pmap *pm, vm_offset_t va);
  151 void    tlb_range_demap(struct pmap *pm, vm_offset_t start, vm_offset_t end);
  152 
  153 tlb_flush_nonlocked_t cheetah_tlb_flush_nonlocked;
  154 tlb_flush_user_t cheetah_tlb_flush_user;
  155 
  156 tlb_flush_nonlocked_t spitfire_tlb_flush_nonlocked;
  157 tlb_flush_user_t spitfire_tlb_flush_user;
  158 
  159 extern tlb_flush_nonlocked_t *tlb_flush_nonlocked;
  160 extern tlb_flush_user_t *tlb_flush_user;
  161 
  162 #endif /* !_MACHINE_TLB_H_ */

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FreeBSD/Linux Kernel Cross Reference sys/sparc64/include/tlb.h

FreeBSD/Linux Kernel Cross Reference
sys/sparc64/include/tlb.h