obp/tools/promif/sun4u/prom_retain.c

/*
* ========== Copyright Header Begin ==========================================
*
* Hypervisor Software File: prom_retain.c
*
* Copyright (c) 2006 Sun Microsystems, Inc. All Rights Reserved.
*
*  - Do no alter or remove copyright notices
*
*  - Redistribution and use of this software in source and binary forms, with
*    or without modification, are permitted provided that the following
*    conditions are met:
*
*  - Redistribution of source code must retain the above copyright notice,
*    this list of conditions and the following disclaimer.
*
*  - Redistribution 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 Sun Microsystems, Inc. or the names of contributors
* may be used to endorse or promote products derived from this software
* without specific prior written permission.
*
*     This software is provided "AS IS," without a warranty of any kind.
* ALL EXPRESS OR IMPLIED CONDITIONS, REPRESENTATIONS AND WARRANTIES,
* INCLUDING ANY IMPLIED WARRANTY OF MERCHANTABILITY, FITNESS FOR A
* PARTICULAR PURPOSE OR NON-INFRINGEMENT, ARE HEREBY EXCLUDED. SUN
* MICROSYSTEMS, INC. ("SUN") AND ITS LICENSORS SHALL NOT BE LIABLE FOR
* ANY DAMAGES SUFFERED BY LICENSEE AS A RESULT OF USING, MODIFYING OR
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* DAMAGES, HOWEVER CAUSED AND REGARDLESS OF THE THEORY OF LIABILITY,
* ARISING OUT OF THE USE OF OR INABILITY TO USE THIS SOFTWARE, EVEN IF
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* You acknowledge that this software is not designed, licensed or
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*
* ========== Copyright Header End ============================================
*/
/*
 * Copyright (c) 2000-2003 Sun Microsystems, Inc.
 * All rights reserved.
 * Use is subject to license terms.
 */

#pragma ident   "@(#)prom_retain.c      1.1     00/07/22 SMI"

#include <sys/promif.h>
#include <sys/promimpl.h>

/*
 * Allocate retained physical memory
 * Returns 0: Success; Non-zero: failure.
 * Returns *phys_hi, *phys_lo only if successful.
 */
int
prom_retain(char *id, size_t size, uint32_t align, u_longlong_t *physaddr)
{
        cell_t ci[11];
        int32_t rv;
        ihandle_t imemory = prom_memory_ihandle();

        if ((imemory == (ihandle_t)-1))
                return (-1);

        ci[0] = p1275_ptr2cell("call-method");  /* Service name */
        ci[1] = (cell_t)5;                      /* #argument cells */
        ci[2] = (cell_t)3;                      /* #result cells */
        ci[3] = p1275_ptr2cell("SUNW,retain");  /* Arg1: Method name */
        ci[4] = p1275_ihandle2cell(imemory);    /* Arg2: memory ihandle */
        ci[5] = p1275_uint2cell(align);         /* Arg2: SA1: align */
        ci[6] = p1275_size2cell(size);          /* Arg3: SA2: size */
        ci[7] = p1275_ptr2cell(id);             /* Arg4: SA3: id name */

        rv = p1275_cif_handler(&ci);

        if (rv != 0)
                return (rv);            /* Service "call-method" failed */
        if (ci[8] != 0)                 /* Res1: catch-result */
                return (-1);            /* Method "SUNW,retain" failed */

        *physaddr = p1275_cells2ull(ci[9], ci[10]);
                                        /* Res3: base.hi, Res4: base.lo */
        return (0);
}