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Annotation of Gnu-Mach/i386/pc/phys_mem.h, revision 1.1

1.1     ! root        1: /* 
        !             2:  * Copyright (c) 1995 The University of Utah and
        !             3:  * the Computer Systems Laboratory at the University of Utah (CSL).
        !             4:  * All rights reserved.
        !             5:  *
        !             6:  * Permission to use, copy, modify and distribute this software is hereby
        !             7:  * granted provided that (1) source code retains these copyright, permission,
        !             8:  * and disclaimer notices, and (2) redistributions including binaries
        !             9:  * reproduce the notices in supporting documentation, and (3) all advertising
        !            10:  * materials mentioning features or use of this software display the following
        !            11:  * acknowledgement: ``This product includes software developed by the
        !            12:  * Computer Systems Laboratory at the University of Utah.''
        !            13:  *
        !            14:  * THE UNIVERSITY OF UTAH AND CSL ALLOW FREE USE OF THIS SOFTWARE IN ITS "AS
        !            15:  * IS" CONDITION.  THE UNIVERSITY OF UTAH AND CSL DISCLAIM ANY LIABILITY OF
        !            16:  * ANY KIND FOR ANY DAMAGES WHATSOEVER RESULTING FROM THE USE OF THIS SOFTWARE.
        !            17:  *
        !            18:  * CSL requests users of this software to return to [email protected] any
        !            19:  * improvements that they make and grant CSL redistribution rights.
        !            20:  *
        !            21:  *      Author: Bryan Ford, University of Utah CSL
        !            22:  */
        !            23: /*
        !            24:  * PC-specific flag bits and priority values
        !            25:  * for the List Memory Manager (LMM)
        !            26:  * relevant for kernels managing physical memory.
        !            27:  */
        !            28: #ifndef _I386_PC_PHYS_MEM_H_
        !            29: #define _I386_PC_PHYS_MEM_H_
        !            30: 
        !            31: #include_next "phys_mem.h"
        !            32: 
        !            33: /* <1MB memory is most precious, then <16MB memory, then high memory.
        !            34:    Assign priorities to each region accordingly
        !            35:    so that high memory will be used first when possible,
        !            36:    then 16MB memory, then 1MB memory.  */
        !            37: #define LMM_PRI_1MB    -2
        !            38: #define LMM_PRI_16MB   -1
        !            39: #define LMM_PRI_HIGH   0
        !            40: 
        !            41: /* For memory <1MB, both LMMF_1MB and LMMF_16MB will be set.
        !            42:    For memory from 1MB to 16MB, only LMMF_16MB will be set.
        !            43:    For all memory higher than that, neither will be set.  */
        !            44: #define LMMF_1MB       0x01
        !            45: #define LMMF_16MB      0x02
        !            46: 
        !            47: 
        !            48: /* Call one of these routines to add a chunk of physical memory found
        !            49:    to the malloc_lmm free list.
        !            50:    It assigns the appropriate flags and priorities to the region,
        !            51:    as defined above, breaking up the region if necessary.  */
        !            52: void phys_mem_add(vm_offset_t min, vm_size_t size);
        !            53: void i16_phys_mem_add(vm_offset_t min, vm_size_t size);
        !            54: 
        !            55: #endif _I386_PC_PHYS_MEM_H_

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