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/6.4/sys/sparc64/include/tte.h 112697 2003-03-27 02:16:31Z jake $
     */
    
    #ifndef _MACHINE_TTE_H_
    #define _MACHINE_TTE_H_
    
    #define TTE_SHIFT       (5)
    
    #define TD_SIZE_SHIFT   (61)
    #define TD_SOFT2_SHIFT  (50)
    #define TD_DIAG_SHIFT   (41)
    #define TD_PA_SHIFT     (13)
    #define TD_SOFT_SHIFT   (7)
    
    #define TD_SIZE_BITS    (2)
    #define TD_SOFT2_BITS   (9)
    #define TD_DIAG_BITS    (9)
    #define TD_PA_BITS      (28)
    #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_DIAG_MASK    ((1UL << TD_DIAG_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_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_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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