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 * Copyright (c) 2013, Joyent, Inc. All rights reserved.
26 */
27
28 #include <strings.h>
29 #include <devid.h>
30 #include <pthread.h>
31 #include <inttypes.h>
32 #include <sys/dkio.h>
33 #include <sys/scsi/scsi_types.h>
34 #include <fm/topo_mod.h>
35 #include <fm/topo_list.h>
36 #include <fm/libdiskstatus.h>
37 #include <sys/fm/protocol.h>
38 #include "disk.h"
39 #include "disk_drivers.h"
40
41 static int disk_enum(topo_mod_t *, tnode_t *, const char *,
42 topo_instance_t, topo_instance_t, void *, void *);
43
44 static const topo_modops_t disk_ops =
45 { disk_enum, NULL };
46
47 static const topo_modinfo_t disk_info =
48 {DISK, FM_FMRI_SCHEME_HC, DISK_VERSION, &disk_ops};
49
50 static int
51 disk_declare_driver(topo_mod_t *mod, tnode_t *baynode, topo_list_t *dlistp,
52 char *driver)
53 {
54 int err;
55
56 if (strcmp("mpt_sas", driver) == 0) {
57 char *sas_address = NULL;
58 tnode_t *child = NULL;
59
60 if ((err = disk_mptsas_find_disk(mod, baynode,
61 &sas_address)) != 0)
62 return (err);
63
64 err = disk_declare_addr(mod, baynode, dlistp,
65 sas_address, &child);
66 topo_mod_strfree(mod, sas_address);
67
68 return (err);
69 }
70
71 topo_mod_dprintf(mod, "unknown disk driver '%s'\n", driver);
72 return (-1);
73 }
74
75 /*ARGSUSED*/
76 static int
77 disk_enum(topo_mod_t *mod, tnode_t *baynode,
78 const char *name, topo_instance_t min, topo_instance_t max,
79 void *arg, void *notused)
80 {
81 char *device, *driver;
82 int err;
83 nvlist_t *fmri;
84 topo_list_t *dlistp = topo_mod_getspecific(mod);
85
86 if (strcmp(name, DISK) != 0) {
87 topo_mod_dprintf(mod, "disk_enum: "
88 "only know how to enumerate %s components.\n", DISK);
89 return (-1);
90 }
91
92 /* set the parent fru */
93 if (topo_node_resource(baynode, &fmri, &err) != 0) {
94 topo_mod_dprintf(mod, "disk_enum: "
95 "topo_node_resource error %s\n", topo_strerror(err));
96 return (-1);
97 }
98 if (topo_node_fru_set(baynode, fmri, 0, &err) != 0) {
99 topo_mod_dprintf(mod, "disk_enum: "
100 "topo_node_fru error %s\n", topo_strerror(err));
101 nvlist_free(fmri);
102 return (-1);
103 }
104 nvlist_free(fmri);
105
106 /*
107 * For internal storage, first check to see if we need to
108 * request more detail from an HBA driver.
109 */
110 if (topo_prop_get_string(baynode, TOPO_PGROUP_BINDING,
111 TOPO_BINDING_DRIVER, &driver, &err) == 0) {
112 err = disk_declare_driver(mod, baynode, dlistp, driver);
113
114 topo_mod_strfree(mod, driver);
115 return (err);
116 } else if (err != ETOPO_PROP_NOENT) {
117 topo_mod_dprintf(mod, "disk_enum: "
118 "binding error %s\n", topo_strerror(err));
119 return (-1);
120 }
121
122 /*
123 * For internal storage, get the path to the occupant from the
124 * binding group of the bay node
125 */
126 if (topo_prop_get_string(baynode, TOPO_PGROUP_BINDING,
127 TOPO_BINDING_OCCUPANT, &device, &err) != 0) {
128 topo_mod_dprintf(mod, "disk_enum: "
129 "binding error %s\n", topo_strerror(err));
130 return (-1);
131 }
132
133
134 /* locate and topo enumerate the disk with that path */
135 err = disk_declare_path(mod, baynode, dlistp, device);
136
137 topo_mod_strfree(mod, device);
138 return (err);
139 }
140
141 /*ARGSUSED*/
142 int
143 _topo_init(topo_mod_t *mod, topo_version_t version)
144 {
145 topo_list_t *dlistp;
146
147 /*
148 * Turn on module debugging output
149 */
150 if (getenv("TOPODISKDEBUG") != NULL)
151 topo_mod_setdebug(mod);
152 topo_mod_dprintf(mod, "_topo_init: "
153 "initializing %s enumerator\n", DISK);
154
155 if (topo_mod_register(mod, &disk_info, TOPO_VERSION) != 0) {
156 topo_mod_dprintf(mod, "_topo_init: "
157 "%s registration failed: %s\n", DISK, topo_mod_errmsg(mod));
158 return (-1); /* mod errno already set */
159 }
160
161 if ((dlistp = topo_mod_zalloc(mod, sizeof (topo_list_t))) == NULL) {
162 topo_mod_dprintf(mod, "_topo_inti: failed to allocate "
163 "disk list");
164 return (-1);
165 }
166
167 if (dev_list_gather(mod, dlistp) != 0) {
168 topo_mod_unregister(mod);
169 topo_mod_free(mod, dlistp, sizeof (topo_list_t));
170 topo_mod_dprintf(mod, "_topo_init: "
171 "failed to locate disks");
172 return (-1);
173 }
174
175 topo_mod_dprintf(mod, "_topo_init: "
176 "%s enumerator initialized\n", DISK);
177
178 topo_mod_setspecific(mod, dlistp);
179
180 return (0);
181 }
182
183 void
184 _topo_fini(topo_mod_t *mod)
185 {
186 topo_list_t *dlistp = topo_mod_getspecific(mod);
187 dev_list_free(mod, dlistp);
188 topo_mod_free(mod, dlistp, sizeof (topo_list_t));
189 topo_mod_unregister(mod);
190 topo_mod_dprintf(mod, "_topo_fini: "
191 "%s enumerator uninitialized\n", DISK);
192 }