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

     /*-
      * Copyright (c) 1997 Berkeley Software Design, Inc. All rights reserved.
      *
      * Redistribution and use in source and binary forms, with or without
      * modification, are permitted provided that the following conditions
      * are met:
      * 1. Redistributions of source code must retain the above copyright
      *    notice, this list of conditions and the following disclaimer.
      * 2. Redistributions in binary form must reproduce the above copyright
     *    notice, this list of conditions and the following disclaimer in the
     *    documentation and/or other materials provided with the distribution.
     * 3. Berkeley Software Design Inc's name may not be used to endorse or
     *    promote products derived from this software without specific prior
     *    written permission.
     *
     * THIS SOFTWARE IS PROVIDED BY BERKELEY SOFTWARE DESIGN INC ``AS IS'' AND
     * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
     * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
     * ARE DISCLAIMED.  IN NO EVENT SHALL BERKELEY SOFTWARE DESIGN INC BE LIABLE
     * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
     * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
     * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
     * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
     * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
     * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
     * SUCH DAMAGE.
     *
     *      from: BSDI: pmap.v9.h,v 1.10.2.6 1999/08/23 22:18:44 cp Exp
     * $FreeBSD: releng/10.1/sys/sparc64/include/tte.h 205258 2010-03-17 20:23:14Z marius $
     */
    
    #ifndef _MACHINE_TTE_H_
    #define _MACHINE_TTE_H_
    
    #define TTE_SHIFT       (5)
    
    #define TD_SIZE_SHIFT   (61)
    #define TD_SOFT2_SHIFT  (50)
    #define TD_RSVD2_SHIFT  (49)
    #define TD_SIZE2_SHIFT  (48)
    #define TD_DIAG_SF_SHIFT        (41)
    #define TD_RSVD_CH_SHIFT        (43)
    #define TD_RSVD_OC_SHIFT        (47)
    #define TD_RSVD_PT_SHIFT        TD_RSVD_CH_SHIFT
    #define TD_RSVD_VE_SHIFT        (41)
    #define TD_PA_SHIFT     (13)
    #define TD_SOFT_SHIFT   (7)
    
    #define TD_SIZE_BITS    (2)
    #define TD_SOFT2_BITS   (9)
    #define TD_RSVD2_BITS   (1)     /* US-IV+, SPARC64 VI, VII, VIIIfx */
    #define TD_SIZE2_BITS   (1)     /* US-IV+, SPARC64 VI, VII, VIIIfx */
    #define TD_DIAG_SF_BITS (9)     /* US-I, II{,e,i} */
    #define TD_RSVD_CH_BITS (7)     /* US-III{,i,+}, US-IV, SPARC64 V */
    #define TD_RSVD_OC_BITS (1)     /* SPARC64 VI, VII */
    #define TD_RSVD_PT_BITS (5)     /* US-IV+, SPARC64 VI, VII */
    #define TD_RSVD_VE_BITS (7)     /* SPARC64 VIIIfx */
    #define TD_PA_CH_BITS   (30)    /* US-III{,i,+}, US-IV{,+}, SPARC64 V */
    #define TD_PA_OC_BITS   (34)    /* SPARC64 VI, VII */
    #define TD_PA_SF_BITS   (28)    /* US-I, II{,e,i}, SPARC64 VIIIfx */
    #define TD_PA_BITS      TD_PA_CH_BITS
    #define TD_SOFT_BITS    (6)
    
    #define TD_SIZE_MASK    ((1UL << TD_SIZE_BITS) - 1)
    #define TD_SOFT2_MASK   ((1UL << TD_SOFT2_BITS) - 1)
    #define TD_RSVD2_MASK   ((1UL << TD_RSVD2_BITS) - 1)
    #define TD_SIZE2_MASK   ((1UL << TD_SIZE2_BITS) - 1)
    #define TD_DIAG_SF_MASK ((1UL << TD_DIAG_SF_BITS) - 1)
    #define TD_RSVD_CH_MASK ((1UL << TD_RSVD_CH_BITS) - 1)
    #define TD_RSVD_OC_MASK ((1UL << TD_RSVD_OC_BITS) - 1)
    #define TD_RSVD_PT_MASK ((1UL << TD_RSVD_PT_BITS) - 1)
    #define TD_RSVD_VE_MASK ((1UL << TD_RSVD_VE_BITS) - 1)
    #define TD_PA_CH_MASK   ((1UL << TD_PA_CH_BITS) - 1)
    #define TD_PA_OC_MASK   ((1UL << TD_PA_OC_BITS) - 1)
    #define TD_PA_SF_MASK   ((1UL << TD_PA_SF_BITS) - 1)
    #define TD_PA_MASK      ((1UL << TD_PA_BITS) - 1)
    #define TD_SOFT_MASK    ((1UL << TD_SOFT_BITS) - 1)
    
    #define TS_8K           (0UL)
    #define TS_64K          (1UL)
    #define TS_512K         (2UL)
    #define TS_4M           (3UL)
    #define TS_32M          (4UL)   /* US-IV+, SPARC64 VI, VII only */
    #define TS_256M         (5UL)   /* US-IV+, SPARC64 VI, VII only */
    #define TS_2G           (6UL)   /* SPARC64 VIIIfx only */
    
    #define TS_MIN          TS_8K
    #define TS_MAX          TS_4M
    
    #define TD_V            (1UL << 63)
    #define TD_8K           (TS_8K << TD_SIZE_SHIFT)
    #define TD_64K          (TS_64K << TD_SIZE_SHIFT)
    #define TD_512K         (TS_512K << TD_SIZE_SHIFT)
    #define TD_4M           (TS_4M << TD_SIZE_SHIFT)
    #define TD_32M                                                          \
            (((TS_32M & TD_SIZE_MASK) << TD_SIZE_SHIFT) |                   \
            (TD_SIZE2_MASK << TD_SIZE2_SHIFT))
    #define TD_256M                                                         \
            (((TS_256M & TD_SIZE_MASK) << TD_SIZE_SHIFT) |                  \
           (TD_SIZE2_MASK << TD_SIZE2_SHIFT))
   #define TD_2G                                                           \
           (((TS_2G & TD_SIZE_MASK) << TD_SIZE_SHIFT) |                    \
           (TD_SIZE2_MASK << TD_SIZE2_SHIFT))
   #define TD_NFO          (1UL << 60)
   #define TD_IE           (1UL << 59)
   #define TD_PA(pa)       ((pa) & (TD_PA_MASK << TD_PA_SHIFT))
   /* NOTE: bit 6 of TD_SOFT will be sign-extended if used as an immediate. */
   #define TD_FAKE         ((1UL << 5) << TD_SOFT_SHIFT)
   #define TD_EXEC         ((1UL << 4) << TD_SOFT_SHIFT)
   #define TD_REF          ((1UL << 3) << TD_SOFT_SHIFT)
   #define TD_PV           ((1UL << 2) << TD_SOFT_SHIFT)
   #define TD_SW           ((1UL << 1) << TD_SOFT_SHIFT)
   #define TD_WIRED        ((1UL << 0) << TD_SOFT_SHIFT)
   #define TD_L            (1UL << 6)
   #define TD_CP           (1UL << 5)
   #define TD_CV           (1UL << 4)
   #define TD_E            (1UL << 3)
   #define TD_P            (1UL << 2)
   #define TD_W            (1UL << 1)
   #define TD_G            (1UL << 0)
   
   #define TV_SIZE_BITS    (TD_SIZE_BITS)
   #define TV_VPN(va, sz)  ((((va) >> TTE_PAGE_SHIFT(sz)) << TV_SIZE_BITS) | sz)
   
   #define TTE_SIZE_SPREAD (3)
   #define TTE_PAGE_SHIFT(sz)                                              \
           (PAGE_SHIFT + ((sz) * TTE_SIZE_SPREAD))
   
   #define TTE_GET_SIZE(tp)                                                \
           (((tp)->tte_data >> TD_SIZE_SHIFT) & TD_SIZE_MASK)
   #define TTE_GET_PAGE_SHIFT(tp)                                          \
           TTE_PAGE_SHIFT(TTE_GET_SIZE(tp))
   #define TTE_GET_PAGE_SIZE(tp)                                           \
           (1 << TTE_GET_PAGE_SHIFT(tp))
   #define TTE_GET_PAGE_MASK(tp)                                           \
           (TTE_GET_PAGE_SIZE(tp) - 1)
   
   #define TTE_GET_PA(tp)                                                  \
           ((tp)->tte_data & (TD_PA_MASK << TD_PA_SHIFT))
   #define TTE_GET_VPN(tp)                                                 \
           ((tp)->tte_vpn >> TV_SIZE_BITS)
   #define TTE_GET_VA(tp)                                                  \
           (TTE_GET_VPN(tp) << TTE_GET_PAGE_SHIFT(tp))
   #define TTE_GET_PMAP(tp)                                                \
           (((tp)->tte_data & TD_P) != 0 ? (kernel_pmap) :                 \
           (PHYS_TO_VM_PAGE(pmap_kextract((vm_offset_t)(tp)))->md.pmap))
   #define TTE_ZERO(tp)                                                    \
           memset(tp, 0, sizeof(*tp))
   
   struct pmap;
   
   struct tte {
           u_long  tte_vpn;
           u_long  tte_data;
           TAILQ_ENTRY(tte) tte_link;
   };
   
   static __inline int
   tte_match(struct tte *tp, vm_offset_t va)
   {
   
           return (((tp->tte_data & TD_V) != 0) &&
               (tp->tte_vpn == TV_VPN(va, TTE_GET_SIZE(tp))));
   }
   
   #endif /* !_MACHINE_TTE_H_ */

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