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 (the "License").
6 * You may not use this file except in compliance with the License.
7 *
8 * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
9 * or http://www.opensolaris.org/os/licensing.
10 * See the License for the specific language governing permissions
11 * and limitations under the License.
12 *
13 * When distributing Covered Code, include this CDDL HEADER in each
14 * file and include the License file at usr/src/OPENSOLARIS.LICENSE.
15 * If applicable, add the following below this CDDL HEADER, with the
16 * fields enclosed by brackets "[]" replaced with your own identifying
17 * information: Portions Copyright [yyyy] [name of copyright owner]
18 *
19 * CDDL HEADER END
20 */
21
22 /*
23 * Copyright 2008 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 /*
30 * Open connections to the LDOM and Machine Description libraries used during
31 * enumeration.
32 */
33
34 #include <sys/types.h>
35 #include <string.h>
36 #include <strings.h>
37 #include <sys/mdesc.h>
38 #include <sys/fm/ldom.h>
39 #include <sys/systeminfo.h>
40
41 #include "pi_impl.h"
42
43 static topo_mod_t *Pi_mod;
44
45 static void pi_free(void *, size_t);
46 static void * pi_alloc(size_t);
47
48 /*
49 * Initialize a connection to the LDOM machine description interface.
50 */
51 int
pi_ldompri_open(topo_mod_t * mod,pi_enum_t * pip)52 pi_ldompri_open(topo_mod_t *mod, pi_enum_t *pip)
53 {
54 if (mod == NULL || pip == NULL) {
55 return (-1);
56 }
57
58 /*
59 * Store the module pointer for this session. This file-global
60 * is used by the allocators called by libldom and libmdesc.
61 */
62 Pi_mod = mod;
63
64 /* Initialize the LDOM connection */
65 pip->ldomp = ldom_init(pi_alloc, pi_free);
66 if (pip->ldomp == NULL) {
67 topo_mod_dprintf(mod,
68 "sun4vpi failed to initialize LDOM layer.\n");
69 Pi_mod = NULL;
70 return (-1);
71 }
72
73 /* Initialize the machine description layer for this ldom instance */
74 pip->ldom_bufsize = ldom_get_core_md(pip->ldomp, &(pip->ldom_bufp));
75 if (pip->ldom_bufsize < 1) {
76 topo_mod_dprintf(mod, "ldom_get_core_md error: bufsize = %d\n",
77 pip->ldom_bufsize);
78 ldom_fini(pip->ldomp);
79 Pi_mod = NULL;
80 return (-1);
81 }
82
83 /* Initialize the machine description internal layer */
84 pip->mdp = md_init_intern(pip->ldom_bufp, pi_alloc, pi_free);
85 if (pip->mdp == NULL ||
86 (pip->md_nodes = md_node_count(pip->mdp)) < 1) {
87 topo_mod_dprintf(mod, "md_init_intern error\n");
88 pi_free(pip->ldom_bufp, pip->ldom_bufsize);
89 ldom_fini(pip->ldomp);
90 Pi_mod = NULL;
91 return (-1);
92 }
93
94 return (0);
95 }
96
97
98 /* ARGSUSED */
99 void
pi_ldompri_close(topo_mod_t * mod,pi_enum_t * pip)100 pi_ldompri_close(topo_mod_t *mod, pi_enum_t *pip)
101 {
102 if (pip == NULL) {
103 return;
104 }
105
106 /* Close the machine description connection */
107 (void) md_fini(pip->mdp);
108
109 /* Close the connection to the LDOM layer */
110 ldom_fini(pip->ldomp);
111
112 /* Free the ldom connection data */
113 pi_free(pip->ldom_bufp, pip->ldom_bufsize);
114
115 /* Reset the file-global module pointer */
116 Pi_mod = NULL;
117 }
118
119
120 static void *
pi_alloc(size_t size)121 pi_alloc(size_t size)
122 {
123 if (Pi_mod == NULL) {
124 /* Cannot allocate memory without a module pointer */
125 return (NULL);
126 }
127 return (topo_mod_alloc(Pi_mod, size));
128 }
129
130
131 static void
pi_free(void * buf,size_t size)132 pi_free(void *buf, size_t size)
133 {
134 if (Pi_mod == NULL) {
135 /* Cannot free memory without a module pointer */
136 return;
137 }
138 topo_mod_free(Pi_mod, buf, size);
139 }
140