xref: /illumos-gate/usr/src/lib/libdiskmgt/common/bus.c (revision 7c478bd9)
1*7c478bd9Sstevel@tonic-gate /*
2*7c478bd9Sstevel@tonic-gate  * CDDL HEADER START
3*7c478bd9Sstevel@tonic-gate  *
4*7c478bd9Sstevel@tonic-gate  * The contents of this file are subject to the terms of the
5*7c478bd9Sstevel@tonic-gate  * Common Development and Distribution License, Version 1.0 only
6*7c478bd9Sstevel@tonic-gate  * (the "License").  You may not use this file except in compliance
7*7c478bd9Sstevel@tonic-gate  * with the License.
8*7c478bd9Sstevel@tonic-gate  *
9*7c478bd9Sstevel@tonic-gate  * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
10*7c478bd9Sstevel@tonic-gate  * or http://www.opensolaris.org/os/licensing.
11*7c478bd9Sstevel@tonic-gate  * See the License for the specific language governing permissions
12*7c478bd9Sstevel@tonic-gate  * and limitations under the License.
13*7c478bd9Sstevel@tonic-gate  *
14*7c478bd9Sstevel@tonic-gate  * When distributing Covered Code, include this CDDL HEADER in each
15*7c478bd9Sstevel@tonic-gate  * file and include the License file at usr/src/OPENSOLARIS.LICENSE.
16*7c478bd9Sstevel@tonic-gate  * If applicable, add the following below this CDDL HEADER, with the
17*7c478bd9Sstevel@tonic-gate  * fields enclosed by brackets "[]" replaced with your own identifying
18*7c478bd9Sstevel@tonic-gate  * information: Portions Copyright [yyyy] [name of copyright owner]
19*7c478bd9Sstevel@tonic-gate  *
20*7c478bd9Sstevel@tonic-gate  * CDDL HEADER END
21*7c478bd9Sstevel@tonic-gate  */
22*7c478bd9Sstevel@tonic-gate /*
23*7c478bd9Sstevel@tonic-gate  * Copyright 2004 Sun Microsystems, Inc.  All rights reserved.
24*7c478bd9Sstevel@tonic-gate  * Use is subject to license terms.
25*7c478bd9Sstevel@tonic-gate  */
26*7c478bd9Sstevel@tonic-gate 
27*7c478bd9Sstevel@tonic-gate #pragma ident	"%Z%%M%	%I%	%E% SMI"
28*7c478bd9Sstevel@tonic-gate 
29*7c478bd9Sstevel@tonic-gate #include <fcntl.h>
30*7c478bd9Sstevel@tonic-gate #include <libdevinfo.h>
31*7c478bd9Sstevel@tonic-gate #include <stdlib.h>
32*7c478bd9Sstevel@tonic-gate #include <sys/sunddi.h>
33*7c478bd9Sstevel@tonic-gate #include <sys/types.h>
34*7c478bd9Sstevel@tonic-gate #include <sys/scsi/conf/autoconf.h>
35*7c478bd9Sstevel@tonic-gate 
36*7c478bd9Sstevel@tonic-gate #include "libdiskmgt.h"
37*7c478bd9Sstevel@tonic-gate #include "disks_private.h"
38*7c478bd9Sstevel@tonic-gate 
39*7c478bd9Sstevel@tonic-gate static descriptor_t	**get_assoc_buses(descriptor_t *desc, int *errp);
40*7c478bd9Sstevel@tonic-gate static descriptor_t	**get_assoc_controllers(descriptor_t *desc, int *errp);
41*7c478bd9Sstevel@tonic-gate 
42*7c478bd9Sstevel@tonic-gate descriptor_t **
bus_get_assoc_descriptors(descriptor_t * desc,dm_desc_type_t type,int * errp)43*7c478bd9Sstevel@tonic-gate bus_get_assoc_descriptors(descriptor_t *desc, dm_desc_type_t type, int *errp)
44*7c478bd9Sstevel@tonic-gate {
45*7c478bd9Sstevel@tonic-gate 	switch (type) {
46*7c478bd9Sstevel@tonic-gate 	case DM_BUS:
47*7c478bd9Sstevel@tonic-gate 	    return (get_assoc_buses(desc, errp));
48*7c478bd9Sstevel@tonic-gate 	case DM_CONTROLLER:
49*7c478bd9Sstevel@tonic-gate 	    return (get_assoc_controllers(desc, errp));
50*7c478bd9Sstevel@tonic-gate 	}
51*7c478bd9Sstevel@tonic-gate 
52*7c478bd9Sstevel@tonic-gate 	*errp = EINVAL;
53*7c478bd9Sstevel@tonic-gate 	return (NULL);
54*7c478bd9Sstevel@tonic-gate }
55*7c478bd9Sstevel@tonic-gate 
56*7c478bd9Sstevel@tonic-gate nvlist_t *
bus_get_attributes(descriptor_t * dp,int * errp)57*7c478bd9Sstevel@tonic-gate bus_get_attributes(descriptor_t *dp, int *errp)
58*7c478bd9Sstevel@tonic-gate {
59*7c478bd9Sstevel@tonic-gate 	bus_t		*bp;
60*7c478bd9Sstevel@tonic-gate 	nvlist_t	*attrs;
61*7c478bd9Sstevel@tonic-gate 
62*7c478bd9Sstevel@tonic-gate 	if (nvlist_alloc(&attrs, NVATTRS, 0) != 0) {
63*7c478bd9Sstevel@tonic-gate 	    *errp = ENOMEM;
64*7c478bd9Sstevel@tonic-gate 	    return (NULL);
65*7c478bd9Sstevel@tonic-gate 	}
66*7c478bd9Sstevel@tonic-gate 
67*7c478bd9Sstevel@tonic-gate 	bp = dp->p.bus;
68*7c478bd9Sstevel@tonic-gate 
69*7c478bd9Sstevel@tonic-gate 	if (nvlist_add_string(attrs, DM_BTYPE, bp->btype) != 0) {
70*7c478bd9Sstevel@tonic-gate 	    nvlist_free(attrs);
71*7c478bd9Sstevel@tonic-gate 	    *errp = ENOMEM;
72*7c478bd9Sstevel@tonic-gate 	    return (NULL);
73*7c478bd9Sstevel@tonic-gate 	}
74*7c478bd9Sstevel@tonic-gate 
75*7c478bd9Sstevel@tonic-gate 	if (bp->freq != 0) {
76*7c478bd9Sstevel@tonic-gate 	    if (nvlist_add_uint32(attrs, DM_CLOCK, bp->freq) != 0) {
77*7c478bd9Sstevel@tonic-gate 		nvlist_free(attrs);
78*7c478bd9Sstevel@tonic-gate 		*errp = ENOMEM;
79*7c478bd9Sstevel@tonic-gate 		return (NULL);
80*7c478bd9Sstevel@tonic-gate 	    }
81*7c478bd9Sstevel@tonic-gate 	}
82*7c478bd9Sstevel@tonic-gate 
83*7c478bd9Sstevel@tonic-gate 	if (bp->pname != NULL) {
84*7c478bd9Sstevel@tonic-gate 	    if (nvlist_add_string(attrs, DM_PNAME, bp->pname) != 0) {
85*7c478bd9Sstevel@tonic-gate 		nvlist_free(attrs);
86*7c478bd9Sstevel@tonic-gate 		*errp = ENOMEM;
87*7c478bd9Sstevel@tonic-gate 		return (NULL);
88*7c478bd9Sstevel@tonic-gate 	    }
89*7c478bd9Sstevel@tonic-gate 	}
90*7c478bd9Sstevel@tonic-gate 
91*7c478bd9Sstevel@tonic-gate 	*errp = 0;
92*7c478bd9Sstevel@tonic-gate 	return (attrs);
93*7c478bd9Sstevel@tonic-gate }
94*7c478bd9Sstevel@tonic-gate 
95*7c478bd9Sstevel@tonic-gate descriptor_t *
bus_get_descriptor_by_name(char * name,int * errp)96*7c478bd9Sstevel@tonic-gate bus_get_descriptor_by_name(char *name, int *errp)
97*7c478bd9Sstevel@tonic-gate {
98*7c478bd9Sstevel@tonic-gate 	descriptor_t	**buses;
99*7c478bd9Sstevel@tonic-gate 	int		i;
100*7c478bd9Sstevel@tonic-gate 	descriptor_t	*bus = NULL;
101*7c478bd9Sstevel@tonic-gate 
102*7c478bd9Sstevel@tonic-gate 	buses = cache_get_descriptors(DM_BUS, errp);
103*7c478bd9Sstevel@tonic-gate 	if (*errp != 0) {
104*7c478bd9Sstevel@tonic-gate 	    return (NULL);
105*7c478bd9Sstevel@tonic-gate 	}
106*7c478bd9Sstevel@tonic-gate 
107*7c478bd9Sstevel@tonic-gate 	for (i = 0; buses[i]; i++) {
108*7c478bd9Sstevel@tonic-gate 	    if (libdiskmgt_str_eq(name, buses[i]->p.bus->name)) {
109*7c478bd9Sstevel@tonic-gate 		bus = buses[i];
110*7c478bd9Sstevel@tonic-gate 	    } else {
111*7c478bd9Sstevel@tonic-gate 		/* clean up the unused descriptors */
112*7c478bd9Sstevel@tonic-gate 		cache_free_descriptor(buses[i]);
113*7c478bd9Sstevel@tonic-gate 	    }
114*7c478bd9Sstevel@tonic-gate 	}
115*7c478bd9Sstevel@tonic-gate 	free(buses);
116*7c478bd9Sstevel@tonic-gate 
117*7c478bd9Sstevel@tonic-gate 	if (bus == NULL) {
118*7c478bd9Sstevel@tonic-gate 	    *errp = ENODEV;
119*7c478bd9Sstevel@tonic-gate 	}
120*7c478bd9Sstevel@tonic-gate 
121*7c478bd9Sstevel@tonic-gate 	return (bus);
122*7c478bd9Sstevel@tonic-gate }
123*7c478bd9Sstevel@tonic-gate 
124*7c478bd9Sstevel@tonic-gate /* ARGSUSED */
125*7c478bd9Sstevel@tonic-gate descriptor_t **
bus_get_descriptors(int filter[],int * errp)126*7c478bd9Sstevel@tonic-gate bus_get_descriptors(int filter[], int *errp)
127*7c478bd9Sstevel@tonic-gate {
128*7c478bd9Sstevel@tonic-gate 	return (cache_get_descriptors(DM_BUS, errp));
129*7c478bd9Sstevel@tonic-gate }
130*7c478bd9Sstevel@tonic-gate 
131*7c478bd9Sstevel@tonic-gate char *
bus_get_name(descriptor_t * desc)132*7c478bd9Sstevel@tonic-gate bus_get_name(descriptor_t *desc)
133*7c478bd9Sstevel@tonic-gate {
134*7c478bd9Sstevel@tonic-gate 	return (desc->p.bus->name);
135*7c478bd9Sstevel@tonic-gate }
136*7c478bd9Sstevel@tonic-gate 
137*7c478bd9Sstevel@tonic-gate /* ARGSUSED */
138*7c478bd9Sstevel@tonic-gate nvlist_t *
bus_get_stats(descriptor_t * dp,int stat_type,int * errp)139*7c478bd9Sstevel@tonic-gate bus_get_stats(descriptor_t *dp, int stat_type, int *errp)
140*7c478bd9Sstevel@tonic-gate {
141*7c478bd9Sstevel@tonic-gate 	/* There are no stat types defined for controllers */
142*7c478bd9Sstevel@tonic-gate 	*errp = EINVAL;
143*7c478bd9Sstevel@tonic-gate 	return (NULL);
144*7c478bd9Sstevel@tonic-gate }
145*7c478bd9Sstevel@tonic-gate 
146*7c478bd9Sstevel@tonic-gate int
bus_make_descriptors()147*7c478bd9Sstevel@tonic-gate bus_make_descriptors()
148*7c478bd9Sstevel@tonic-gate {
149*7c478bd9Sstevel@tonic-gate 	int	error;
150*7c478bd9Sstevel@tonic-gate 	bus_t	*bp;
151*7c478bd9Sstevel@tonic-gate 
152*7c478bd9Sstevel@tonic-gate 	bp = cache_get_buslist();
153*7c478bd9Sstevel@tonic-gate 	while (bp != NULL) {
154*7c478bd9Sstevel@tonic-gate 	    cache_load_desc(DM_BUS, bp, NULL, NULL, &error);
155*7c478bd9Sstevel@tonic-gate 	    if (error != 0) {
156*7c478bd9Sstevel@tonic-gate 		return (error);
157*7c478bd9Sstevel@tonic-gate 	    }
158*7c478bd9Sstevel@tonic-gate 	    bp = bp->next;
159*7c478bd9Sstevel@tonic-gate 	}
160*7c478bd9Sstevel@tonic-gate 
161*7c478bd9Sstevel@tonic-gate 	return (0);
162*7c478bd9Sstevel@tonic-gate }
163*7c478bd9Sstevel@tonic-gate 
164*7c478bd9Sstevel@tonic-gate static descriptor_t **
get_assoc_buses(descriptor_t * desc,int * errp)165*7c478bd9Sstevel@tonic-gate get_assoc_buses(descriptor_t *desc, int *errp)
166*7c478bd9Sstevel@tonic-gate {
167*7c478bd9Sstevel@tonic-gate 	bus_t		*bp;
168*7c478bd9Sstevel@tonic-gate 	char		*name;
169*7c478bd9Sstevel@tonic-gate 	descriptor_t	**allbuses;
170*7c478bd9Sstevel@tonic-gate 	descriptor_t	**buses;
171*7c478bd9Sstevel@tonic-gate 	int		cnt;
172*7c478bd9Sstevel@tonic-gate 	int		i;
173*7c478bd9Sstevel@tonic-gate 	int		pos;
174*7c478bd9Sstevel@tonic-gate 
175*7c478bd9Sstevel@tonic-gate 	bp = desc->p.bus;
176*7c478bd9Sstevel@tonic-gate 	name = bp->name;
177*7c478bd9Sstevel@tonic-gate 
178*7c478bd9Sstevel@tonic-gate 	allbuses = cache_get_descriptors(DM_BUS, errp);
179*7c478bd9Sstevel@tonic-gate 	if (*errp != 0) {
180*7c478bd9Sstevel@tonic-gate 	    return (NULL);
181*7c478bd9Sstevel@tonic-gate 	}
182*7c478bd9Sstevel@tonic-gate 
183*7c478bd9Sstevel@tonic-gate 	/* Count how many we have (we overcount, but thats ok). */
184*7c478bd9Sstevel@tonic-gate 	for (cnt = 0; allbuses[cnt]; cnt++);
185*7c478bd9Sstevel@tonic-gate 
186*7c478bd9Sstevel@tonic-gate 	/* make the snapshot */
187*7c478bd9Sstevel@tonic-gate 	buses = (descriptor_t **)calloc(cnt + 1, sizeof (descriptor_t *));
188*7c478bd9Sstevel@tonic-gate 	if (buses == NULL) {
189*7c478bd9Sstevel@tonic-gate 	    *errp = ENOMEM;
190*7c478bd9Sstevel@tonic-gate 	    cache_free_descriptors(allbuses);
191*7c478bd9Sstevel@tonic-gate 	    return (NULL);
192*7c478bd9Sstevel@tonic-gate 	}
193*7c478bd9Sstevel@tonic-gate 
194*7c478bd9Sstevel@tonic-gate 	/*
195*7c478bd9Sstevel@tonic-gate 	 * Get this buses parent bus and get the buses that I am the parent of.
196*7c478bd9Sstevel@tonic-gate 	 */
197*7c478bd9Sstevel@tonic-gate 	pos = 0;
198*7c478bd9Sstevel@tonic-gate 	for (i = 0; allbuses[i]; i++) {
199*7c478bd9Sstevel@tonic-gate 	    if (libdiskmgt_str_eq(name, allbuses[i]->p.bus->pname)) {
200*7c478bd9Sstevel@tonic-gate 		buses[pos++] = allbuses[i];
201*7c478bd9Sstevel@tonic-gate 	    } else if (bp->pname != NULL &&
202*7c478bd9Sstevel@tonic-gate 		libdiskmgt_str_eq(bp->pname, allbuses[i]->p.bus->name)) {
203*7c478bd9Sstevel@tonic-gate 
204*7c478bd9Sstevel@tonic-gate 		buses[pos++] = allbuses[i];
205*7c478bd9Sstevel@tonic-gate 	    } else {
206*7c478bd9Sstevel@tonic-gate 		/* clean up the unused descriptor */
207*7c478bd9Sstevel@tonic-gate 		cache_free_descriptor(allbuses[i]);
208*7c478bd9Sstevel@tonic-gate 	    }
209*7c478bd9Sstevel@tonic-gate 	}
210*7c478bd9Sstevel@tonic-gate 	buses[pos] = NULL;
211*7c478bd9Sstevel@tonic-gate 
212*7c478bd9Sstevel@tonic-gate 	free(allbuses);
213*7c478bd9Sstevel@tonic-gate 
214*7c478bd9Sstevel@tonic-gate 	*errp = 0;
215*7c478bd9Sstevel@tonic-gate 	return (buses);
216*7c478bd9Sstevel@tonic-gate }
217*7c478bd9Sstevel@tonic-gate 
218*7c478bd9Sstevel@tonic-gate static descriptor_t **
get_assoc_controllers(descriptor_t * desc,int * errp)219*7c478bd9Sstevel@tonic-gate get_assoc_controllers(descriptor_t *desc, int *errp)
220*7c478bd9Sstevel@tonic-gate {
221*7c478bd9Sstevel@tonic-gate 	bus_t		*bp;
222*7c478bd9Sstevel@tonic-gate 	descriptor_t	**controllers;
223*7c478bd9Sstevel@tonic-gate 	int		cnt;
224*7c478bd9Sstevel@tonic-gate 	int		i;
225*7c478bd9Sstevel@tonic-gate 
226*7c478bd9Sstevel@tonic-gate 	bp = desc->p.bus;
227*7c478bd9Sstevel@tonic-gate 
228*7c478bd9Sstevel@tonic-gate 	/* Count how many we have. */
229*7c478bd9Sstevel@tonic-gate 	for (cnt = 0; bp->controllers[cnt]; cnt++);
230*7c478bd9Sstevel@tonic-gate 
231*7c478bd9Sstevel@tonic-gate 	/* make the snapshot */
232*7c478bd9Sstevel@tonic-gate 	controllers = (descriptor_t **)calloc(cnt + 1, sizeof (descriptor_t *));
233*7c478bd9Sstevel@tonic-gate 	if (controllers == NULL) {
234*7c478bd9Sstevel@tonic-gate 	    *errp = ENOMEM;
235*7c478bd9Sstevel@tonic-gate 	    return (NULL);
236*7c478bd9Sstevel@tonic-gate 	}
237*7c478bd9Sstevel@tonic-gate 
238*7c478bd9Sstevel@tonic-gate 	for (i = 0; bp->controllers[i]; i++) {
239*7c478bd9Sstevel@tonic-gate 	    controllers[i] = cache_get_desc(DM_CONTROLLER, bp->controllers[i],
240*7c478bd9Sstevel@tonic-gate 		NULL, NULL, errp);
241*7c478bd9Sstevel@tonic-gate 	    if (*errp != 0) {
242*7c478bd9Sstevel@tonic-gate 		cache_free_descriptors(controllers);
243*7c478bd9Sstevel@tonic-gate 		return (NULL);
244*7c478bd9Sstevel@tonic-gate 	    }
245*7c478bd9Sstevel@tonic-gate 	}
246*7c478bd9Sstevel@tonic-gate 	controllers[i] = NULL;
247*7c478bd9Sstevel@tonic-gate 
248*7c478bd9Sstevel@tonic-gate 	*errp = 0;
249*7c478bd9Sstevel@tonic-gate 	return (controllers);
250*7c478bd9Sstevel@tonic-gate }
251