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 * Copyright (c) 2007, 2010, Oracle and/or its affiliates. All rights reserved.
23 */
24
25 #include <strings.h>
26 #include <devid.h>
27 #include <pthread.h>
28 #include <inttypes.h>
29 #include <sys/dkio.h>
30 #include <sys/scsi/scsi_types.h>
31 #include <fm/topo_mod.h>
32 #include <fm/topo_list.h>
33 #include <fm/libdiskstatus.h>
34 #include <sys/fm/protocol.h>
35 #include "disk.h"
36
37 static int disk_enum(topo_mod_t *, tnode_t *, const char *,
38 topo_instance_t, topo_instance_t, void *, void *);
39
40 static const topo_modops_t disk_ops =
41 { disk_enum, NULL };
42
43 static const topo_modinfo_t disk_info =
44 {DISK, FM_FMRI_SCHEME_HC, DISK_VERSION, &disk_ops};
45
46 /*ARGSUSED*/
47 static int
48 disk_enum(topo_mod_t *mod, tnode_t *baynode,
49 const char *name, topo_instance_t min, topo_instance_t max,
50 void *arg, void *notused)
51 {
52 char *device;
53 int err;
54 nvlist_t *fmri;
55 topo_list_t *dlistp = topo_mod_getspecific(mod);
56
57 if (strcmp(name, DISK) != 0) {
58 topo_mod_dprintf(mod, "disk_enum: "
59 "only know how to enumerate %s components.\n", DISK);
60 return (-1);
61 }
62
63 /* set the parent fru */
64 if (topo_node_resource(baynode, &fmri, &err) != 0) {
65 topo_mod_dprintf(mod, "disk_enum: "
66 "topo_node_resource error %s\n", topo_strerror(err));
67 return (-1);
68 }
69 if (topo_node_fru_set(baynode, fmri, 0, &err) != 0) {
70 topo_mod_dprintf(mod, "disk_enum: "
71 "topo_node_fru error %s\n", topo_strerror(err));
72 nvlist_free(fmri);
73 return (-1);
74 }
75 nvlist_free(fmri);
76
77 /*
78 * For internal storage, get the path to the occupant from the
79 * binding group of the bay node
80 */
81 if (topo_prop_get_string(baynode, TOPO_PGROUP_BINDING,
82 TOPO_BINDING_OCCUPANT, &device, &err) != 0) {
83 topo_mod_dprintf(mod, "disk_enum: "
84 "binding error %s\n", topo_strerror(err));
85 return (-1);
86 }
87
88
89 /* locate and topo enumerate the disk with that path */
90 err = disk_declare_path(mod, baynode, dlistp, device);
91
92 topo_mod_strfree(mod, device);
93 return (err);
94 }
95
96 /*ARGSUSED*/
97 int
98 _topo_init(topo_mod_t *mod, topo_version_t version)
99 {
100 topo_list_t *dlistp;
101
102 /*
103 * Turn on module debugging output
104 */
105 if (getenv("TOPODISKDEBUG") != NULL)
106 topo_mod_setdebug(mod);
107 topo_mod_dprintf(mod, "_topo_init: "
108 "initializing %s enumerator\n", DISK);
109
110 if (topo_mod_register(mod, &disk_info, TOPO_VERSION) != 0) {
111 topo_mod_dprintf(mod, "_topo_init: "
112 "%s registration failed: %s\n", DISK, topo_mod_errmsg(mod));
113 return (-1); /* mod errno already set */
114 }
115
116 if ((dlistp = topo_mod_zalloc(mod, sizeof (topo_list_t))) == NULL) {
117 topo_mod_dprintf(mod, "_topo_inti: failed to allocate "
118 "disk list");
119 return (-1);
120 }
121
122 if (dev_list_gather(mod, dlistp) != 0) {
123 topo_mod_unregister(mod);
124 topo_mod_free(mod, dlistp, sizeof (topo_list_t));
125 topo_mod_dprintf(mod, "_topo_init: "
126 "failed to locate disks");
127 return (-1);
128 }
129
130 topo_mod_dprintf(mod, "_topo_init: "
131 "%s enumerator initialized\n", DISK);
132
133 topo_mod_setspecific(mod, dlistp);
134
135 return (0);
136 }
137
138 void
139 _topo_fini(topo_mod_t *mod)
140 {
141 topo_list_t *dlistp = topo_mod_getspecific(mod);
142 dev_list_free(mod, dlistp);
143 topo_mod_free(mod, dlistp, sizeof (topo_list_t));
144 topo_mod_unregister(mod);
145 topo_mod_dprintf(mod, "_topo_fini: "
146 "%s enumerator uninitialized\n", DISK);
147 }