xref: /titanic_41/usr/src/lib/scsi/libses/common/ses_enclosure.c (revision 791a814c934fcd4deb13b26c1f116ff283272a0d)
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 2009 Sun Microsystems, Inc.  All rights reserved.
24  * Use is subject to license terms.
25  */
26 
27 #include <scsi/libses.h>
28 #include "ses_impl.h"
29 
30 int
enc_parse_td(ses2_td_hdr_impl_t * tip,const char * tp,nvlist_t * nvl)31 enc_parse_td(ses2_td_hdr_impl_t *tip, const char *tp, nvlist_t *nvl)
32 {
33 	int nverr;
34 
35 	if (tp != NULL)
36 		SES_NV_ADD(fixed_string, nverr, nvl, SES_PROP_CLASS_DESCRIPTION,
37 		    tp, tip->sthi_text_len);
38 
39 	return (0);
40 }
41 
42 static int
enc_eid(const ses2_ed_impl_t * tp,nvlist_t * nvl,const char * name)43 enc_eid(const ses2_ed_impl_t *tp, nvlist_t *nvl, const char *name)
44 {
45 	int nverr;
46 
47 	SES_NV_ADD(uint64, nverr, nvl, name, tp->st_hdr.sehi_subenclosure_id);
48 
49 	return (0);
50 }
51 
52 static int
enc_espid(const ses2_ed_impl_t * tp,nvlist_t * nvl,const char * name)53 enc_espid(const ses2_ed_impl_t *tp, nvlist_t *nvl, const char *name)
54 {
55 	int nverr;
56 
57 	SES_NV_ADD(uint64, nverr, nvl, name, tp->st_hdr.sehi_rel_esp_id);
58 
59 	return (0);
60 }
61 
62 static int
enc_nesp(const ses2_ed_impl_t * tp,nvlist_t * nvl,const char * name)63 enc_nesp(const ses2_ed_impl_t *tp, nvlist_t *nvl, const char *name)
64 {
65 	int nverr;
66 
67 	SES_NV_ADD(uint64, nverr, nvl, name, tp->st_hdr.sehi_n_esps);
68 
69 	return (0);
70 }
71 
72 static int
enc_lid(const ses2_ed_impl_t * tp,nvlist_t * nvl,const char * name)73 enc_lid(const ses2_ed_impl_t *tp, nvlist_t *nvl, const char *name)
74 {
75 	nvlist_t *lid;
76 	int nverr;
77 
78 	if ((nverr = nvlist_alloc(&lid, NV_UNIQUE_NAME, 0)) != 0)
79 		return (ses_set_nverrno(nverr, NULL));
80 
81 	SES_NV_ADD_OR_FREE(uint64, nverr, lid, SPC3_NAA_INT,
82 	    SCSI_READ64(&tp->st_logical_id));
83 
84 	switch (tp->st_logical_id.sni8i_naa) {
85 	case NAA_IEEE_EXT:
86 		SES_NV_ADD_OR_FREE(uint64, nverr, lid, SPC3_NAA_ID_TYPE,
87 		    NAA_IEEE_EXT);
88 		SES_NV_ADD_OR_FREE(uint64, nverr, lid, SPC3_NAA_COMPANY_ID,
89 		    NAA_IEEE_EXT_COMPANY_ID(&tp->st_logical_id.sni8i_ext_id));
90 		SES_NV_ADD_OR_FREE(uint64, nverr, lid, SPC3_NAA_VS_A,
91 		    NAA_IEEE_EXT_VENDOR_A(&tp->st_logical_id.sni8i_ext_id));
92 		SES_NV_ADD_OR_FREE(uint64, nverr, lid, SPC3_NAA_VS_B,
93 		    NAA_IEEE_EXT_VENDOR_B(&tp->st_logical_id.sni8i_ext_id));
94 		break;
95 	case NAA_IEEE_REG:
96 		SES_NV_ADD_OR_FREE(uint64, nverr, lid, SPC3_NAA_ID_TYPE,
97 		    NAA_IEEE_REG);
98 		SES_NV_ADD_OR_FREE(uint64, nverr, lid, SPC3_NAA_COMPANY_ID,
99 		    NAA_IEEE_REG_COMPANY_ID(&tp->st_logical_id.sni8i_reg_id));
100 		SES_NV_ADD_OR_FREE(uint64, nverr, lid, SPC3_NAA_VS_A,
101 		    NAA_IEEE_REG_VENDOR_ID(&tp->st_logical_id.sni8i_reg_id));
102 		break;
103 	default:
104 		break;
105 	}
106 
107 	if ((nverr = nvlist_add_nvlist(nvl, name, lid)) != 0) {
108 		nvlist_free(lid);
109 		return (ses_set_nverrno(nverr, name));
110 	}
111 
112 	nvlist_free(lid);
113 
114 	return (0);
115 }
116 
117 static int
enc_vid(const ses2_ed_impl_t * tp,nvlist_t * nvl,const char * name)118 enc_vid(const ses2_ed_impl_t *tp, nvlist_t *nvl,
119     const char *name)
120 {
121 	int nverr;
122 
123 	SES_NV_ADD_FS_TRUNC(nverr, nvl, name, tp->st_vendor_id);
124 
125 	return (0);
126 }
127 
128 static int
enc_pid(const ses2_ed_impl_t * tp,nvlist_t * nvl,const char * name)129 enc_pid(const ses2_ed_impl_t *tp, nvlist_t *nvl,
130     const char *name)
131 {
132 	int nverr;
133 
134 	SES_NV_ADD_FS_TRUNC(nverr, nvl, name, tp->st_product_id);
135 
136 	return (0);
137 }
138 
139 static int
enc_rev(const ses2_ed_impl_t * tp,nvlist_t * nvl,const char * name)140 enc_rev(const ses2_ed_impl_t *tp, nvlist_t *nvl,
141     const char *name)
142 {
143 	int nverr;
144 
145 	SES_NV_ADD_FS_TRUNC(nverr, nvl, name, tp->st_product_revision);
146 
147 	return (0);
148 }
149 
150 static int
enc_vs(const ses2_ed_impl_t * tp,nvlist_t * nvl,const char * name)151 enc_vs(const ses2_ed_impl_t *tp, nvlist_t *nvl, const char *name)
152 {
153 	int nverr;
154 
155 	SES_NV_ADD(byte_array, nverr, nvl, name, (uchar_t *)tp->st_priv,
156 	    tp->st_hdr.sehi_ed_len - offsetof(ses2_ed_impl_t, st_priv[0]) +
157 	    offsetof(ses2_ed_impl_t, st_hdr.sehi_ed_len) + 1);
158 
159 	return (0);
160 }
161 
162 /* LINTED - unused */
163 static const ses2_ed_impl_t __ed = { 0 };
164 
165 #define	ED_REQ_LEN(member)	\
166 	(offsetof(ses2_ed_impl_t, member) - sizeof (ses2_ed_hdr_impl_t) + \
167 	    sizeof (__ed.member))
168 
169 static const struct config_member {
170 	const char *name;
171 	size_t minsz;
172 	int (*func)(const ses2_ed_impl_t *, nvlist_t *, const char *);
173 } config_members[] = {
174 	{ SES_EN_PROP_EID, 0, enc_eid },
175 	{ SES_EN_PROP_ESPID, 0, enc_espid },
176 	{ SES_EN_PROP_NESP, 0, enc_nesp },
177 	{ SES_EN_PROP_LID, ED_REQ_LEN(st_logical_id), enc_lid },
178 	{ SES_EN_PROP_VID, ED_REQ_LEN(st_vendor_id), enc_vid },
179 	{ SES_EN_PROP_PID, ED_REQ_LEN(st_product_id), enc_pid },
180 	{ SES_EN_PROP_REV, ED_REQ_LEN(st_product_revision), enc_rev },
181 	{ SES_EN_PROP_VS, ED_REQ_LEN(st_priv), enc_vs },
182 	{ NULL, 0, NULL }
183 };
184 
185 int
enc_parse_ed(ses2_ed_impl_t * tp,nvlist_t * nvl)186 enc_parse_ed(ses2_ed_impl_t *tp, nvlist_t *nvl)
187 {
188 	const struct config_member *mp;
189 	int err;
190 
191 	if (tp == NULL)
192 		return (0);
193 
194 	for (mp = &config_members[0]; mp->name != NULL; mp++) {
195 		if (mp->func != NULL && tp->st_hdr.sehi_ed_len >= mp->minsz) {
196 			err = mp->func(tp, nvl, mp->name);
197 			if (err != 0)
198 				return (err);
199 		}
200 	}
201 
202 	return (0);
203 }
204 
205 ses_target_t *
ses_open_scsi(uint_t version,libscsi_target_t * stp)206 ses_open_scsi(uint_t version, libscsi_target_t *stp)
207 {
208 	ses_target_t *tp;
209 	ses_snap_t *sp;
210 
211 	if (version != LIBSES_VERSION) {
212 		(void) ses_set_errno(ESES_VERSION);
213 		return (NULL);
214 	}
215 
216 	if ((tp = ses_zalloc(sizeof (ses_target_t))) == NULL)
217 		return (NULL);
218 
219 	tp->st_target = stp;
220 	tp->st_scsi_hdl = libscsi_get_handle(stp);
221 	tp->st_truncate = (getenv("LIBSES_TRUNCATE") != NULL);
222 	if (tp->st_truncate)
223 		srand48(gethrtime());
224 
225 	(void) pthread_mutex_init(&tp->st_lock, NULL);
226 
227 	if (ses_plugin_load(tp) != 0) {
228 		ses_close(tp);
229 		return (NULL);
230 	}
231 
232 	if ((sp = ses_snap_new(tp)) == NULL) {
233 		ses_close(tp);
234 		return (NULL);
235 	}
236 
237 	ses_snap_rele(sp);
238 
239 	return (tp);
240 }
241 
242 ses_target_t *
ses_open(uint_t version,const char * target)243 ses_open(uint_t version, const char *target)
244 {
245 	ses_target_t *tp;
246 	libscsi_errno_t serr;
247 	libscsi_target_t *stp;
248 	libscsi_hdl_t *hp;
249 
250 	if ((hp = libscsi_init(LIBSCSI_VERSION, &serr)) == NULL) {
251 		(void) ses_error(ESES_LIBSCSI, "failed to initialize "
252 		    "libscsi: %s", libscsi_strerror(serr));
253 		return (NULL);
254 	}
255 
256 	if ((stp = libscsi_open(hp, NULL, target)) == NULL) {
257 		(void) ses_libscsi_error(hp, "failed to open SES target");
258 		libscsi_fini(hp);
259 		return (NULL);
260 	}
261 
262 	if ((tp = ses_open_scsi(version, stp)) == NULL) {
263 		libscsi_close(hp, stp);
264 		libscsi_fini(hp);
265 		return (NULL);
266 	}
267 
268 	tp->st_closescsi = B_TRUE;
269 
270 	return (tp);
271 }
272 
273 libscsi_target_t *
ses_scsi_target(ses_target_t * tp)274 ses_scsi_target(ses_target_t *tp)
275 {
276 	return (tp->st_target);
277 }
278 
279 void
ses_close(ses_target_t * tp)280 ses_close(ses_target_t *tp)
281 {
282 	if (tp->st_snapshots != NULL)
283 		ses_snap_rele(tp->st_snapshots);
284 	if (tp->st_snapshots != NULL)
285 		ses_panic("attempt to close SES target with active snapshots");
286 	ses_plugin_unload(tp);
287 	if (tp->st_closescsi) {
288 		libscsi_close(tp->st_scsi_hdl, tp->st_target);
289 		libscsi_fini(tp->st_scsi_hdl);
290 	}
291 	ses_free(tp);
292 }
293