FreeBSD/Linux Kernel Cross Reference
sys/contrib/ncsw/etc/mm.h

     /*
      * Copyright 2008-2012 Freescale Semiconductor Inc.
      *
      * Redistribution and use in source and binary forms, with or without
      * modification, are permitted provided that the following conditions are met:
      *     * Redistributions of source code must retain the above copyright
      *       notice, this list of conditions and the following disclaimer.
      *     * 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.
     *     * Neither the name of Freescale Semiconductor nor the
     *       names of its contributors may be used to endorse or promote products
     *       derived from this software without specific prior written permission.
     *
     *
     * ALTERNATIVELY, this software may be distributed under the terms of the
     * GNU General Public License ("GPL") as published by the Free Software
     * Foundation, either version 2 of that License or (at your option) any
     * later version.
     *
     * THIS SOFTWARE IS PROVIDED BY Freescale Semiconductor ``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 Freescale Semiconductor 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.
     */
    
    
    /****************************************************************
     *
     * File:  mm.h
     *
     *
     * Description:
     *  MM (Memory Management) object definitions.
     *  It also includes definitions of the Free Block, Busy Block
     *  and Memory Block structures used by the MM object.
     *
     ****************************************************************/
    
    #ifndef __MM_H
    #define __MM_H
    
    
    #include "mm_ext.h"
    
    #define __ERR_MODULE__  MODULE_MM
    
    
    #define MAKE_ALIGNED(addr, align)    \
        (((uint64_t)(addr) + ((align) - 1)) & (~(((uint64_t)align) - 1)))
    
    
    /* t_MemBlock data structure defines parameters of the Memory Block */
    typedef struct t_MemBlock
    {
        struct t_MemBlock *p_Next;      /* Pointer to the next memory block */
    
        uint64_t  base;                 /* Base address of the memory block */
        uint64_t  end;                  /* End address of the memory block */
    } t_MemBlock;
    
    
    /* t_FreeBlock data structure defines parameters of the Free Block */
    typedef struct t_FreeBlock
    {
        struct t_FreeBlock *p_Next;     /* Pointer to the next free block */
    
        uint64_t  base;                 /* Base address of the block */
        uint64_t  end;                  /* End address of the block */
    } t_FreeBlock;
    
    
    /* t_BusyBlock data structure defines parameters of the Busy Block  */
    typedef struct t_BusyBlock
    {
        struct t_BusyBlock *p_Next;         /* Pointer to the next free block */
    
        uint64_t    base;                   /* Base address of the block */
        uint64_t    end;                    /* End address of the block */
        char        name[MM_MAX_NAME_LEN];  /* That block of memory was allocated for
                                               something specified by the Name */
    } t_BusyBlock;
    
    
    /* t_MM data structure defines parameters of the MM object */
    typedef struct t_MM
    {
        t_Handle        h_Spinlock;
    
        t_MemBlock      *memBlocks;     /* List of memory blocks (Memory list) */
        t_BusyBlock     *busyBlocks;    /* List of busy blocks (Busy list) */
        t_FreeBlock     *freeBlocks[MM_MAX_ALIGNMENT + 1];
                                        /* Alignment lists of free blocks (Free lists) */
   
       uint64_t        freeMemSize;    /* Total size of free memory (in bytes) */
   } t_MM;
   
   
   #endif /* __MM_H */

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