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Annotation of Gnu-Mach/i386/pc/phys_mem_add.c, 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: #include <mach/machine/vm_types.h>
        !            25: #include <mach/lmm.h>
        !            26: #include <malloc.h>
        !            27: 
        !            28: #include "vm_param.h"
        !            29: #include "phys_mem.h"
        !            30: 
        !            31: /* Note that this routine takes _physical_ addresses, not virtual.  */
        !            32: void phys_mem_add(vm_offset_t min, vm_size_t size)
        !            33: {
        !            34:        vm_offset_t max = min + size;
        !            35: 
        !            36:        /* Add the memory region with the proper flags and priority.  */
        !            37:        if (max <= 1*1024*1024)
        !            38:        {
        !            39:                lmm_add(&malloc_lmm, phystokv(min), size,
        !            40:                        LMMF_1MB | LMMF_16MB, LMM_PRI_1MB);
        !            41:        }
        !            42:        else
        !            43:        {
        !            44:                if (min < 16*1024*1024)
        !            45:                {
        !            46:                        vm_offset_t nmax = max;
        !            47:                        if (nmax > 16*1024*1024) nmax = 16*1024*1024;
        !            48:                        lmm_add(&malloc_lmm, phystokv(min), nmax - min,
        !            49:                                LMMF_16MB, LMM_PRI_16MB);
        !            50:                }
        !            51:                if (max > 16*1024*1024)
        !            52:                {
        !            53:                        vm_offset_t nmin = min;
        !            54:                        if (nmin < 16*1024*1024) nmin = 16*1024*1024;
        !            55:                        lmm_add(&malloc_lmm, phystokv(nmin), max - nmin, 0, 0);
        !            56:                }
        !            57:        }
        !            58: 
        !            59:        if (max > phys_mem_max)
        !            60:                phys_mem_max = max;
        !            61: }
        !            62: 

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