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 1991-1994,1998,2002 Sun Microsystems, Inc. All rights reserved. 24 * Use is subject to license terms. 25 */ 26 27 #pragma ident "%Z%%M% %I% %E% SMI" 28 29 #include <sys/promif.h> 30 #include <sys/promimpl.h> 31 32 static int token2path(char *svc, uint_t token, char *buf, uint_t len); 33 34 int 35 prom_ihandle_to_path(ihandle_t instance, char *buf, uint_t len) 36 { 37 return (token2path("instance-to-path", (uint_t)instance, buf, len)); 38 } 39 40 int 41 prom_phandle_to_path(phandle_t package, char *buf, uint_t len) 42 { 43 return (token2path("package-to-path", (uint_t)package, buf, len)); 44 } 45 46 static int 47 token2path(char *service, uint_t token, char *buf, uint_t len) 48 { 49 cell_t ci[7]; 50 int rv; 51 #ifdef PROM_32BIT_ADDRS 52 char *obuf = NULL; 53 54 if ((uintptr_t)buf > (uint32_t)-1) { 55 obuf = buf; 56 buf = promplat_alloc(len); 57 if (buf == NULL) { 58 return (-1); 59 } 60 } 61 #endif 62 63 promif_preprom(); 64 65 ci[0] = p1275_ptr2cell(service); /* Service name */ 66 ci[1] = 3; /* #argument cells */ 67 ci[2] = 1; /* #return cells */ 68 ci[3] = p1275_uint2cell(token); /* Arg1: ihandle/phandle */ 69 ci[4] = p1275_ptr2cell(buf); /* Arg2: Result buffer */ 70 ci[5] = p1275_uint2cell(len); /* Arg3: Buffer len */ 71 rv = p1275_cif_handler(&ci); 72 73 promif_postprom(); 74 75 #ifdef PROM_32BIT_ADDRS 76 if (obuf != NULL) { 77 promplat_bcopy(buf, obuf, len); 78 promplat_free(buf, len); 79 } 80 #endif 81 82 if (rv != 0) 83 return (-1); 84 return (p1275_cell2int(ci[6])); /* Res1: Actual length */ 85 } 86