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

     /*-
      * Copyright (c) 1996
      *      The President and Fellows of Harvard College. All rights reserved.
      * Copyright (c) 1992, 1993
      *      The Regents of the University of California.  All rights reserved.
      *
      * This software was developed by the Computer Systems Engineering group
      * at Lawrence Berkeley Laboratory under DARPA contract BG 91-66 and
      * contributed to Berkeley.
     *
     * 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. All advertising materials mentioning features or use of this software
     *    must display the following acknowledgement:
     *      This product includes software developed by Aaron Brown and
     *      Harvard University.
     * 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: @(#)cache.h       8.1 (Berkeley) 6/11/93
     *      from: NetBSD: cache.h,v 1.3 2000/08/01 00:28:02 eeh Exp
     *
     * $FreeBSD: releng/8.2/sys/sparc64/include/cache.h 212685 2010-09-15 18:51:14Z marius $
     */
    
    #ifndef _MACHINE_CACHE_H_
    #define _MACHINE_CACHE_H_
    
    #define DCACHE_COLOR_BITS       (1)
    #define DCACHE_COLORS           (1 << DCACHE_COLOR_BITS)
    #define DCACHE_COLOR_MASK       (DCACHE_COLORS - 1)
    #define DCACHE_COLOR(va)        (((va) >> PAGE_SHIFT) & DCACHE_COLOR_MASK)
    #define DCACHE_OTHER_COLOR(color)                                       \
            ((color) ^ DCACHE_COLOR_BITS)
    
    #define DC_TAG_SHIFT    2
    #define DC_VALID_SHIFT  0
    
    #define DC_TAG_BITS     28
    #define DC_VALID_BITS   2
    
    #define DC_TAG_MASK     ((1 << DC_TAG_BITS) - 1)
    #define DC_VALID_MASK   ((1 << DC_VALID_BITS) - 1)
    
    #define IC_TAG_SHIFT    7
    #define IC_VALID_SHIFT  36
    
    #define IC_TAG_BITS     28
    #define IC_VALID_BITS   1
    
    #define IC_TAG_MASK     ((1 << IC_TAG_BITS) - 1)
    #define IC_VALID_MASK   ((1 << IC_VALID_BITS) - 1)
    
    #ifndef LOCORE
    
    /*
     * Cache control information
     */
    struct cacheinfo {
            u_int   ic_size;                /* instruction cache */
            u_int   ic_assoc;
            u_int   ic_linesize;
            u_int   dc_size;                /* data cache */
            u_int   dc_assoc;
            u_int   dc_linesize;
            u_int   ec_size;                /* external cache info */
            u_int   ec_assoc;
            u_int   ec_linesize;
    };
    
    #ifdef _KERNEL
    
    extern u_int dcache_color_ignore;
    
    struct pcpu;
    
    typedef void cache_enable_t(u_int cpu_impl);
    typedef void cache_flush_t(void);
    typedef void dcache_page_inval_t(vm_paddr_t pa);
    typedef void icache_page_inval_t(vm_paddr_t pa);
   
   void cache_init(struct pcpu *pcpu);
   
   cache_enable_t cheetah_cache_enable;
   cache_flush_t cheetah_cache_flush;
   dcache_page_inval_t cheetah_dcache_page_inval;
   icache_page_inval_t cheetah_icache_page_inval;
   
   cache_enable_t spitfire_cache_enable;
   cache_flush_t spitfire_cache_flush;
   dcache_page_inval_t spitfire_dcache_page_inval;
   icache_page_inval_t spitfire_icache_page_inval;
   
   extern cache_enable_t *cache_enable;
   extern cache_flush_t *cache_flush;
   extern dcache_page_inval_t *dcache_page_inval;
   extern icache_page_inval_t *icache_page_inval;
   
   cache_flush_t zeus_cache_flush;
   dcache_page_inval_t zeus_dcache_page_inval;
   icache_page_inval_t zeus_icache_page_inval;
   
   #endif /* KERNEL */
   
   #endif /* !LOCORE */
   
   #endif /* !_MACHINE_CACHE_H_ */

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