/*
 * CDDL HEADER START
 *
 * The contents of this file are subject to the terms of the
 * Common Development and Distribution License, Version 1.0 only
 * (the "License").  You may not use this file except in compliance
 * with the License.
 *
 * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
 * or http://www.opensolaris.org/os/licensing.
 * See the License for the specific language governing permissions
 * and limitations under the License.
 *
 * When distributing Covered Code, include this CDDL HEADER in each
 * file and include the License file at usr/src/OPENSOLARIS.LICENSE.
 * If applicable, add the following below this CDDL HEADER, with the
 * fields enclosed by brackets "[]" replaced with your own identifying
 * information: Portions Copyright [yyyy] [name of copyright owner]
 *
 * CDDL HEADER END
 */
/*
 * Copyright (c) 1994-2000 by Sun Microsystems, Inc.
 * All rights reserved.
 */

#pragma ident   "%Z%%M% %I%     %E% SMI"

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

/*
 * This service converts the given physical address into a text string,
 * representing the name of the field-replacable part for the given
 * physical address. In other words, it tells the kernel which chip got
 * the (un)correctable ECC error, which info is hopefully relayed to the user!
 */
int
prom_get_unum(int syn_code, unsigned long long physaddr, char *buf,
                uint_t buflen, int *ustrlen)
{
        cell_t ci[12];
        int rv;
        ihandle_t imemory = prom_memory_ihandle();

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

        ci[0] = p1275_ptr2cell("call-method");          /* Service name */
        ci[1] = (cell_t)7;                              /* #argument cells */
        ci[2] = (cell_t)2;                              /* #result cells */
        ci[3] = p1275_ptr2cell("SUNW,get-unumber");     /* Arg1: Method name */
        ci[4] = p1275_ihandle2cell(imemory);            /* Arg2: mem. ihandle */
        ci[5] = p1275_uint2cell(buflen);                /* Arg3: buflen */
        ci[6] = p1275_ptr2cell(buf);                    /* Arg4: buf */
        ci[7] = p1275_ull2cell_high(physaddr);          /* Arg5: physhi */
        ci[8] = p1275_ull2cell_low(physaddr);           /* Arg6: physlo */
        ci[9] = p1275_int2cell(syn_code);               /* Arg7: bit # */
        ci[10] = (cell_t)-1;                            /* ret1: catch result */
        ci[11] = (cell_t)-1;                            /* ret2: length */

        promif_preprom();
        rv = p1275_cif_handler(&ci);
        promif_postprom();

        if (rv != 0)
                return (rv);
        if (p1275_cell2int(ci[10]) != 0)        /* Res1: catch result */
                return (-1);                    /* "SUNW,get-unumber" failed */
        *ustrlen = p1275_cell2uint(ci[11]);     /* Res2: unum str length */
        return (0);
}