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Annotation of Gnu-Mach/i386/pc/phys_mem_add.c, revision 1.1.1.1

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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