usr/src/psm/promif/ieee1275/sun4/prom_getunum.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) 1994-2000 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  * This service converts the given physical address into a text string,
  34  * representing the name of the field-replacable part for the given
  35  * physical address. In other words, it tells the kernel which chip got
  36  * the (un)correctable ECC error, which info is hopefully relayed to the user!
  37  */
  38 int
  39 prom_get_unum(int syn_code, unsigned long long physaddr, char *buf,
  40                 uint_t buflen, int *ustrlen)
  41 {
  42         cell_t ci[12];
  43         int rv;
  44         ihandle_t imemory = prom_memory_ihandle();
  45
  46         *ustrlen = -1;
  47         if ((imemory == (ihandle_t)-1))
  48                 return (-1);
  49
  50         ci[0] = p1275_ptr2cell("call-method");          /* Service name */
  51         ci[1] = (cell_t)7;                              /* #argument cells */
  52         ci[2] = (cell_t)2;                              /* #result cells */
  53         ci[3] = p1275_ptr2cell("SUNW,get-unumber");     /* Arg1: Method name */
  54         ci[4] = p1275_ihandle2cell(imemory);            /* Arg2: mem. ihandle */
  55         ci[5] = p1275_uint2cell(buflen);                /* Arg3: buflen */
  56         ci[6] = p1275_ptr2cell(buf);                    /* Arg4: buf */
  57         ci[7] = p1275_ull2cell_high(physaddr);          /* Arg5: physhi */
  58         ci[8] = p1275_ull2cell_low(physaddr);           /* Arg6: physlo */
  59         ci[9] = p1275_int2cell(syn_code);               /* Arg7: bit # */
  60         ci[10] = (cell_t)-1;                            /* ret1: catch result */
  61         ci[11] = (cell_t)-1;                            /* ret2: length */
  62
  63         promif_preprom();
  64         rv = p1275_cif_handler(&ci);
  65         promif_postprom();
  66
  67         if (rv != 0)
  68                 return (rv);
  69         if (p1275_cell2int(ci[10]) != 0)        /* Res1: catch result */
  70                 return (-1);                    /* "SUNW,get-unumber" failed */
  71         *ustrlen = p1275_cell2uint(ci[11]);     /* Res2: unum str length */
  72         return (0);
  73 }