The Design and Implementation of the FreeBSD Operating System, Second Edition
Now available: The Design and Implementation of the FreeBSD Operating System (Second Edition)

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FreeBSD/Linux Kernel Cross Reference
sys/sun4v/include/tte.h

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    1 /*-
    2  * Copyright (c) 1997 Berkeley Software Design, Inc. All rights reserved.
    3  *
    4  * Redistribution and use in source and binary forms, with or without
    5  * modification, are permitted provided that the following conditions
    6  * are met:
    7  * 1. Redistributions of source code must retain the above copyright
    8  *    notice, this list of conditions and the following disclaimer.
    9  * 2. Redistributions in binary form must reproduce the above copyright
   10  *    notice, this list of conditions and the following disclaimer in the
   11  *    documentation and/or other materials provided with the distribution.
   12  * 3. Berkeley Software Design Inc's name may not be used to endorse or
   13  *    promote products derived from this software without specific prior
   14  *    written permission.
   15  *
   16  * THIS SOFTWARE IS PROVIDED BY BERKELEY SOFTWARE DESIGN INC ``AS IS'' AND
   17  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
   18  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
   19  * ARE DISCLAIMED.  IN NO EVENT SHALL BERKELEY SOFTWARE DESIGN INC BE LIABLE
   20  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
   21  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
   22  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
   23  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
   24  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
   25  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
   26  * SUCH DAMAGE.
   27  *
   28  *      from: BSDI: pmap.v9.h,v 1.10.2.6 1999/08/23 22:18:44 cp Exp
   29  * $FreeBSD$
   30  */
   31 
   32 #ifndef _MACHINE_TTE_H_
   33 #define _MACHINE_TTE_H_
   34 
   35 #define TTE_SHIFT       (4)
   36 
   37 #define TD_SOFT2_SHIFT  (50)
   38 #define TD_DIAG_SHIFT   (41)
   39 #define TD_PA_SHIFT     (13)
   40 #define TD_SOFT_SHIFT   (7)
   41 
   42 #define TD_SOFT2_BITS   (9)
   43 #define TD_DIAG_BITS    (9)
   44 #define TD_PA_CH_BITS   (30)
   45 #define TD_PA_SF_BITS   (28)
   46 #define TD_PA_BITS      (42)
   47 #define TD_SOFT_BITS    (6)
   48 
   49 #define TD_SOFT2_MASK   ((1UL << TD_SOFT2_BITS) - 1)
   50 #define TD_DIAG_MASK    ((1UL << TD_DIAG_BITS) - 1)
   51 #define TD_PA_CH_MASK   ((1UL << TD_PA_CH_BITS) - 1)
   52 #define TD_PA_SF_MASK   ((1UL << TD_PA_SF_BITS) - 1)
   53 #define TD_PA_MASK      ((1UL << TD_PA_BITS) - 1)
   54 #define TD_SOFT_MASK    ((1UL << TD_SOFT_BITS) - 1)
   55 
   56 #define TTE8K           (0UL)
   57 #define TTE64K          (1UL)
   58 #define TTE512K         (2UL)
   59 #define TTE4M           (3UL)
   60 #define TTE32M          (4UL)
   61 #define TTE256M         (5UL)
   62 #define TTE2G           (6UL)
   63 #define TTE16G          (7UL)
   64 
   65 #define TD_PA(pa)       ((pa) & (TD_PA_MASK << TD_PA_SHIFT))
   66 /* NOTE: bit 6 of TD_SOFT will be sign-extended if used as an immediate. */
   67 #define TD_FAKE         ((1UL << 5) << TD_SOFT_SHIFT)
   68 #define TD_EXEC         ((1UL << 4) << TD_SOFT_SHIFT)
   69 #define TD_REF          ((1UL << 3) << TD_SOFT_SHIFT)
   70 #define TD_PV           ((1UL << 2) << TD_SOFT_SHIFT)
   71 #define TD_SW           ((1UL << 1) << TD_SOFT_SHIFT)
   72 #define TD_WIRED        ((1UL << 0) << TD_SOFT_SHIFT)
   73 #define TD_L            (1UL << 6)
   74 #define TD_CP           (1UL << 5)
   75 #define TD_CV           (1UL << 4)
   76 #define TD_E            (1UL << 3)
   77 #define TD_P            (1UL << 2)
   78 #define TD_W            (1UL << 1)
   79 #define TD_G            (1UL << 0)
   80 
   81 
   82 #define TTE_GET_PAGE_SIZE(tp) \
   83         (1 << TTE_GET_PAGE_SHIFT(tp))
   84 #define TTE_GET_PAGE_MASK(tp) \
   85         (TTE_GET_PAGE_SIZE(tp) - 1)
   86 
   87 #define TTE_GET_PA(tte_data) \
   88         (tte_data & (TD_PA_MASK << TD_PA_SHIFT))
   89 #define TTE_GET_VPN(tp) \
   90         ((tp)->tte_vpn >> TV_SIZE_BITS)
   91 #define TTE_GET_VA(tp) \
   92         (TTE_GET_VPN(tp) << TTE_GET_PAGE_SHIFT(tp))
   93 #define TTE_GET_PMAP(tp) \
   94         (((tp)->tte_data & TD_P) != 0 ? \
   95          (kernel_pmap) : \
   96          (PHYS_TO_VM_PAGE(pmap_kextract((vm_offset_t)(tp)))->md.pmap))
   97 #define TTE_ZERO(tp) \
   98         memset(tp, 0, sizeof(*tp))
   99 
  100 struct pmap;
  101 #define PTE_SHIFT       (3)
  102 #define PT_SHIFT        (PAGE_SHIFT - PTE_SHIFT)
  103 
  104 #define VTD_SOFT_SHIFT  (56)
  105 
  106 #define VTD_V           (1UL << 63)
  107 #define VTD_NFO         (1UL << 62)
  108 #define VTD_PA(pa)      ((pa) & (TD_PA_MASK << TD_PA_SHIFT))
  109 #define VTD_IE          (1UL << 12)
  110 #define VTD_E           (1UL << 11)
  111 #define VTD_CP          (1UL << 10)
  112 #define VTD_CV          (1UL << 9)
  113 #define VTD_P           (1UL << 8)
  114 #define VTD_X           (1UL << 7)
  115 #define VTD_W           (1UL << 6)
  116 
  117 #define VTD_REF         (1UL << 5)
  118 #define VTD_SW_W        (1UL << 4)
  119 #define VTD_MANAGED     (1UL << 58)
  120 #define VTD_WIRED       (1UL << 57)
  121 #define VTD_LOCK        (1UL << 56)
  122 
  123 
  124 
  125 #define VTD_8K          TTE8K 
  126 #define VTD_64K         TTE64K 
  127 #define VTD_512K        TTE512K 
  128 #define VTD_4M          TTE4M 
  129 #define VTD_32M         TTE32M 
  130 #define VTD_256M        TTE256M 
  131 
  132 
  133 /*
  134  * sparc64 compatibility for the loader
  135  */
  136 
  137 #define TD_SIZE_SHIFT   (61)
  138 #define TS_4M           (3UL)
  139 
  140 #define TD_V            (1UL << 63)
  141 #define TD_4M           (TS_4M << TD_SIZE_SHIFT)
  142 
  143 /*
  144  * default flags for kernel pages
  145  */
  146 #define TTE_KERNEL            VTD_V | VTD_CP | VTD_CV | VTD_P | VTD_X | VTD_W | VTD_SW_W | VTD_REF | VTD_WIRED
  147 #define TTE_KERNEL_MINFLAGS   VTD_P
  148 #define TTE_MINFLAGS          VTD_V | VTD_CP | VTD_CV
  149 
  150 #define VTD_SIZE_BITS   (4)
  151 #define VTD_SIZE_MASK   ((1 << VTD_SIZE_BITS) - 1)
  152 
  153 
  154 #define TTE_SIZE_SPREAD (3)
  155 #define TTE_PAGE_SHIFT(sz) \
  156         (PAGE_SHIFT + ((sz) * TTE_SIZE_SPREAD))
  157 #define TTE_GET_SIZE(tte_data) \
  158         (tte_data & VTD_SIZE_MASK)
  159 #define TTE_GET_PAGE_SHIFT(tte_data) \
  160         TTE_PAGE_SHIFT(TTE_GET_SIZE(tte_data))
  161 
  162 #ifdef notyet
  163 typedef union {
  164         struct tte {
  165                 unsigned int    v:1;            /* <63> valid */
  166                 unsigned int    nfo:1;          /* <62> non-fault only */
  167                 unsigned int    sw:3;           /* <61:59> sw */
  168                 unsigned int    managed:1;      /* <58> managed */
  169                 unsigned int    wired:1;        /* <57> wired */
  170                 unsigned int    lock:1;         /* <56> sw - locked */
  171                 unsigned long   pa:43;          /* <55:13> pa */
  172                 unsigned int    ie:1;           /* <12> 1=invert endianness */
  173                 unsigned int    e:1;            /* <11> side effect */
  174                 unsigned int    cp:1;           /* <10> physically cache */
  175                 unsigned int    cv:1;           /* <9> virtually cache */
  176                 unsigned int    p:1;            /* <8> privilege required */
  177                 unsigned int    x:1;            /* <7> execute perm */
  178                 unsigned int    w:1;            /* <6> write perm */
  179                 unsigned int    ref:1;          /* <5> sw - ref */
  180                 unsigned int    wr_perm:1;      /* <4> sw - write perm */
  181                 unsigned int    rsvd:1;         /* <3> reserved */
  182                 unsigned int    sz:3;           /* <2:0> pagesize */
  183         } tte_bit;
  184         uint64_t                ll;
  185 } tte_t;
  186 #endif
  187 
  188 #define tte_val         tte_bit.v               /* use < 0 check in asm */
  189 #define tte_size        tte_bit.sz
  190 #define tte_nfo         tte_bit.nfo
  191 #define tte_ie          tte_bit.ie              
  192 #define tte_wired       tte_bit.wired
  193 #define tte_pa          tte_bit.pa
  194 #define tte_ref         tte_bit.ref
  195 #define tte_wr_perm     tte_bit.wr_perm
  196 #define tte_exec_perm   tte_bit.x
  197 #define tte_lock        tte_bit.lock
  198 #define tte_cp          tte_bit.cp
  199 #define tte_cv          tte_bit.cv
  200 #define tte_se          tte_bit.e
  201 #define tte_priv        tte_bit.p
  202 #define tte_hwwr        tte_bit.w
  203 
  204 #define TTE_IS_VALID(ttep)      ((ttep)->tte_inthi < 0)
  205 #define TTE_SET_INVALID(ttep)   ((ttep)->tte_val = 0)
  206 #define TTE_IS_8K(ttep)         (TTE_CSZ(ttep) == TTE8K)
  207 #define TTE_IS_WIRED(ttep)      ((ttep)->tte_wired)
  208 #define TTE_IS_WRITABLE(ttep)   ((ttep)->tte_wr_perm)
  209 #define TTE_IS_EXECUTABLE(ttep) ((ttep)->tte_exec_perm)
  210 #define TTE_IS_PRIVILEGED(ttep) ((ttep)->tte_priv)
  211 #define TTE_IS_NOSYNC(ttep)     ((ttep)->tte_no_sync)
  212 #define TTE_IS_LOCKED(ttep)     ((ttep)->tte_lock)
  213 #define TTE_IS_SIDEFFECT(ttep)  ((ttep)->tte_se)
  214 #define TTE_IS_NFO(ttep)        ((ttep)->tte_nfo)
  215 
  216 #define TTE_IS_REF(ttep)        ((ttep)->tte_ref)
  217 #define TTE_IS_MOD(ttep)        ((ttep)->tte_hwwr)
  218 #define TTE_IS_IE(ttep)         ((ttep)->tte_ie)
  219 #define TTE_SET_SUSPEND(ttep)   ((ttep)->tte_suspend = 1)
  220 #define TTE_CLR_SUSPEND(ttep)   ((ttep)->tte_suspend = 0)
  221 #define TTE_IS_SUSPEND(ttep)    ((ttep)->tte_suspend)
  222 #define TTE_SET_REF(ttep)       ((ttep)->tte_ref = 1)
  223 #define TTE_CLR_REF(ttep)       ((ttep)->tte_ref = 0)
  224 #define TTE_SET_LOCKED(ttep)    ((ttep)->tte_lock = 1)
  225 #define TTE_CLR_LOCKED(ttep)    ((ttep)->tte_lock = 0)
  226 #define TTE_SET_MOD(ttep)       ((ttep)->tte_hwwr = 1)
  227 #define TTE_CLR_MOD(ttep)       ((ttep)->tte_hwwr = 0)
  228 #define TTE_SET_RM(ttep)                                                \
  229         (((ttep)->tte_intlo) =                                          \
  230         (ttep)->tte_intlo | TTE_HWWR_INT | TTE_REF_INT)
  231 #define TTE_CLR_RM(ttep)                                                \
  232         (((ttep)->tte_intlo) =                                          \
  233         (ttep)->tte_intlo & ~(TTE_HWWR_INT | TTE_REF_INT))
  234 
  235 #define TTE_SET_WRT(ttep)       ((ttep)->tte_wr_perm = 1)
  236 #define TTE_CLR_WRT(ttep)       ((ttep)->tte_wr_perm = 0)
  237 #define TTE_SET_EXEC(ttep)      ((ttep)->tte_exec_perm = 1)
  238 #define TTE_CLR_EXEC(ttep)      ((ttep)->tte_exec_perm = 0)
  239 #define TTE_SET_PRIV(ttep)      ((ttep)->tte_priv = 1)
  240 #define TTE_CLR_PRIV(ttep)      ((ttep)->tte_priv = 0)
  241 
  242 #define TTE_BSZS_SHIFT(sz)      ((sz) * 3)
  243 
  244 struct pmap;
  245 
  246 void tte_clear_phys_bit(vm_page_t m, uint64_t flags);
  247 
  248 void tte_set_phys_bit(vm_page_t m, uint64_t flags);
  249 
  250 boolean_t tte_get_phys_bit(vm_page_t m, uint64_t flags);
  251 
  252 void tte_clear_virt_bit(struct pmap *pmap, vm_offset_t va, uint64_t flags);
  253 
  254 void tte_set_virt_bit(struct pmap *pmap, vm_offset_t va, uint64_t flags);
  255 
  256 boolean_t tte_get_virt_bit(struct pmap *pmap, vm_offset_t va, uint64_t flags);
  257 
  258 #endif /* !_MACHINE_TTE_H_ */

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