usr/src/psm/promif/ieee1275/sun4/prom_retain.c

   1 /*
   2  * CDDL HEADER START
   3  *
   4  * The contents of this file are subject to the terms of the
   5  * Common Development and Distribution License, Version 1.0 only
   6  * (the "License").  You may not use this file except in compliance
   7  * with the License.
   8  *
   9  * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
  10  * or http://www.opensolaris.org/os/licensing.
  11  * See the License for the specific language governing permissions
  12  * and limitations under the License.
  13  *
  14  * When distributing Covered Code, include this CDDL HEADER in each
  15  * file and include the License file at usr/src/OPENSOLARIS.LICENSE.
  16  * If applicable, add the following below this CDDL HEADER, with the
  17  * fields enclosed by brackets "[]" replaced with your own identifying
  18  * information: Portions Copyright [yyyy] [name of copyright owner]
  19  *
  20  * CDDL HEADER END
  21  */
  22 /*
  23  * Copyright (c) 1994, by Sun Microsystems, Inc.
  24  * All rights reserved.
  25  */
  26
  27 #pragma ident   "%Z%%M% %I%     %E% SMI"
  28
  29 #include <sys/promif.h>
  30 #include <sys/promimpl.h>
  31
  32 /*
  33  * Allocate retained physical memory
  34  * Returns 0: Success; Non-zero: failure.
  35  * Returns *phys_hi, *phys_lo only if successful.
  36  */
  37 int
  38 prom_retain(char *id, size_t size, u_int align, unsigned long long *physaddr)
  39 {
  40         cell_t ci[11];
  41         int rv;
  42         ihandle_t imemory = prom_memory_ihandle();
  43
  44         if ((imemory == (ihandle_t)-1))
  45                 return (-1);
  46
  47         ci[0] = p1275_ptr2cell("call-method");  /* Service name */
  48         ci[1] = (cell_t)5;                      /* #argument cells */
  49         ci[2] = (cell_t)3;                      /* #result cells */
  50         ci[3] = p1275_ptr2cell("SUNW,retain");  /* Arg1: Method name */
  51         ci[4] = p1275_ihandle2cell(imemory);    /* Arg2: memory ihandle */
  52         ci[5] = p1275_uint2cell(align);         /* Arg2: SA1: align */
  53         ci[6] = p1275_size2cell(size);          /* Arg3: SA2: size */
  54         ci[7] = p1275_ptr2cell(id);             /* Arg4: SA3: id name */
  55
  56         promif_preprom();
  57         rv = p1275_cif_handler(&ci);
  58         promif_postprom();
  59
  60         if (rv != 0)
  61                 return (rv);            /* Service "call-method" failed */
  62         if (ci[8] != 0)                 /* Res1: catch-result */
  63                 return (-1);            /* Method "SUNW,retain" failed */
  64
  65         *physaddr = p1275_cells2ull(ci[9], ci[10]);
  66                                         /* Res3: base.hi, Res4: base.lo */
  67         return (0);
  68 }