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

     /*-
      * Copyright (c) 1991 Regents of the University of California.
      * All rights reserved.
      *
      * This code is derived from software contributed to Berkeley by
      * the Systems Programming Group of the University of Utah Computer
      * Science Department and William Jolitz of UUNET Technologies Inc.
      *
      * 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.
     * 4. Neither the name of the University nor the names of its contributors
     *    may be used to endorse or promote products derived from this software
     *    without specific prior written permission.
     *
     * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``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 THE REGENTS OR CONTRIBUTORS 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: hp300: @(#)pmap.h 7.2 (Berkeley) 12/16/90
     *      from: @(#)pmap.h        7.4 (Berkeley) 5/12/91
     *      from: FreeBSD: src/sys/i386/include/pmap.h,v 1.70 2000/11/30
     * $FreeBSD: releng/10.1/sys/sparc64/include/pmap.h 253940 2013-08-04 21:17:05Z attilio $
     */
    
    #ifndef _MACHINE_PMAP_H_
    #define _MACHINE_PMAP_H_
    
    #include <sys/queue.h>
    #include <sys/_cpuset.h>
    #include <sys/_lock.h>
    #include <sys/_mutex.h>
    #include <sys/_rwlock.h>
    #include <machine/cache.h>
    #include <machine/tte.h>
    
    #define PMAP_CONTEXT_MAX        8192
    
    typedef struct pmap *pmap_t;
    
    struct md_page {
            TAILQ_HEAD(, tte) tte_list;
            struct  pmap *pmap;
            uint32_t colors[DCACHE_COLORS];
            int32_t color;
    };
    
    struct pmap {
            struct  mtx pm_mtx;
            struct  tte *pm_tsb;
            vm_object_t pm_tsb_obj;
            cpuset_t pm_active;
            u_int   pm_context[MAXCPU];
            struct  pmap_statistics pm_stats;
    };
    
    #define PMAP_LOCK(pmap)         mtx_lock(&(pmap)->pm_mtx)
    #define PMAP_LOCK_ASSERT(pmap, type)                                    \
                                    mtx_assert(&(pmap)->pm_mtx, (type))
    #define PMAP_LOCK_DESTROY(pmap) mtx_destroy(&(pmap)->pm_mtx)
    #define PMAP_LOCK_INIT(pmap)    mtx_init(&(pmap)->pm_mtx, "pmap",       \
                                        NULL, MTX_DEF | MTX_DUPOK)
    #define PMAP_LOCKED(pmap)       mtx_owned(&(pmap)->pm_mtx)
    #define PMAP_MTX(pmap)          (&(pmap)->pm_mtx)
    #define PMAP_TRYLOCK(pmap)      mtx_trylock(&(pmap)->pm_mtx)
    #define PMAP_UNLOCK(pmap)       mtx_unlock(&(pmap)->pm_mtx)
    
    #define pmap_page_get_memattr(m)        VM_MEMATTR_DEFAULT
    #define pmap_page_is_write_mapped(m)    (((m)->aflags & PGA_WRITEABLE) != 0)
    #define pmap_page_set_memattr(m, ma)    (void)0
    
    void    pmap_bootstrap(u_int cpu_impl);
    vm_paddr_t pmap_kextract(vm_offset_t va);
    void    pmap_kenter(vm_offset_t va, vm_page_t m);
    void    pmap_kremove(vm_offset_t);
    void    pmap_kenter_flags(vm_offset_t va, vm_paddr_t pa, u_long flags);
    void    pmap_kremove_flags(vm_offset_t va);
    boolean_t pmap_page_is_mapped(vm_page_t m);
    
    int     pmap_cache_enter(vm_page_t m, vm_offset_t va);
    
    int     pmap_remove_tte(struct pmap *pm1, struct pmap *pm2, struct tte *tp,
                            vm_offset_t va);
    
    void    pmap_map_tsb(void);
    void    pmap_set_kctx(void);
   
   #define vtophys(va)     pmap_kextract((vm_offset_t)(va))
   
   extern  struct pmap kernel_pmap_store;
   #define kernel_pmap     (&kernel_pmap_store)
   extern  struct rwlock_padalign tte_list_global_lock;
   extern  vm_paddr_t phys_avail[];
   extern  vm_offset_t virtual_avail;
   extern  vm_offset_t virtual_end;
   
   #ifdef PMAP_STATS
   
   SYSCTL_DECL(_debug_pmap_stats);
   
   #define PMAP_STATS_VAR(name) \
           static long name; \
           SYSCTL_LONG(_debug_pmap_stats, OID_AUTO, name, CTLFLAG_RW,      \
               &name, 0, "")
   
   #define PMAP_STATS_INC(var) \
           atomic_add_long(&var, 1)
   
   #else
   
   #define PMAP_STATS_VAR(name)
   #define PMAP_STATS_INC(var)
   
   #endif
   
   #endif /* !_MACHINE_PMAP_H_ */

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