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