1*9e86db79SHyon Kim /*
2*9e86db79SHyon Kim * CDDL HEADER START
3*9e86db79SHyon Kim *
4*9e86db79SHyon Kim * The contents of this file are subject to the terms of the
5*9e86db79SHyon Kim * Common Development and Distribution License (the "License").
6*9e86db79SHyon Kim * You may not use this file except in compliance with the License.
7*9e86db79SHyon Kim *
8*9e86db79SHyon Kim * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
9*9e86db79SHyon Kim * or http://www.opensolaris.org/os/licensing.
10*9e86db79SHyon Kim * See the License for the specific language governing permissions
11*9e86db79SHyon Kim * and limitations under the License.
12*9e86db79SHyon Kim *
13*9e86db79SHyon Kim * When distributing Covered Code, include this CDDL HEADER in each
14*9e86db79SHyon Kim * file and include the License file at usr/src/OPENSOLARIS.LICENSE.
15*9e86db79SHyon Kim * If applicable, add the following below this CDDL HEADER, with the
16*9e86db79SHyon Kim * fields enclosed by brackets "[]" replaced with your own identifying
17*9e86db79SHyon Kim * information: Portions Copyright [yyyy] [name of copyright owner]
18*9e86db79SHyon Kim *
19*9e86db79SHyon Kim * CDDL HEADER END
20*9e86db79SHyon Kim */
21*9e86db79SHyon Kim
22*9e86db79SHyon Kim /*
23*9e86db79SHyon Kim * Copyright 2009 Sun Microsystems, Inc. All rights reserved.
24*9e86db79SHyon Kim * Use is subject to license terms.
25*9e86db79SHyon Kim */
26*9e86db79SHyon Kim
27*9e86db79SHyon Kim #include <sun_sas.h>
28*9e86db79SHyon Kim
29*9e86db79SHyon Kim /*
30*9e86db79SHyon Kim * Discover an HBA node with matching path.
31*9e86db79SHyon Kim * The di_node_t argument should be the root of the device tree.
32*9e86db79SHyon Kim * This routine assumes the locks have been taken
33*9e86db79SHyon Kim */
34*9e86db79SHyon Kim static int
find_matching_hba(di_node_t node,void * arg)35*9e86db79SHyon Kim find_matching_hba(di_node_t node, void *arg)
36*9e86db79SHyon Kim {
37*9e86db79SHyon Kim int *propData, rval;
38*9e86db79SHyon Kim walkarg_t *wa = (walkarg_t *)arg;
39*9e86db79SHyon Kim char *devpath, fulldevpath[MAXPATHLEN];
40*9e86db79SHyon Kim
41*9e86db79SHyon Kim /* Skip stub(instance -1) nodes */
42*9e86db79SHyon Kim if (IS_STUB_NODE(node)) {
43*9e86db79SHyon Kim return (DI_WALK_CONTINUE);
44*9e86db79SHyon Kim }
45*9e86db79SHyon Kim
46*9e86db79SHyon Kim rval = di_prop_lookup_ints(DDI_DEV_T_ANY, node,
47*9e86db79SHyon Kim "sm-hba-supported", &propData);
48*9e86db79SHyon Kim if (rval < 0) {
49*9e86db79SHyon Kim return (DI_WALK_CONTINUE);
50*9e86db79SHyon Kim } else {
51*9e86db79SHyon Kim if ((devpath = di_devfs_path(node)) == NULL) {
52*9e86db79SHyon Kim /* still continue to see if there is matching one. */
53*9e86db79SHyon Kim return (DI_WALK_CONTINUE);
54*9e86db79SHyon Kim }
55*9e86db79SHyon Kim (void) snprintf(fulldevpath, MAXPATHLEN, "%s%s", DEVICES_DIR,
56*9e86db79SHyon Kim devpath);
57*9e86db79SHyon Kim
58*9e86db79SHyon Kim if ((strstr(fulldevpath, wa->devpath)) != NULL) {
59*9e86db79SHyon Kim *wa->flag = B_TRUE;
60*9e86db79SHyon Kim /* Found a node. No need to walk any more. */
61*9e86db79SHyon Kim di_devfs_path_free(devpath);
62*9e86db79SHyon Kim return (DI_WALK_TERMINATE);
63*9e86db79SHyon Kim }
64*9e86db79SHyon Kim di_devfs_path_free(devpath);
65*9e86db79SHyon Kim }
66*9e86db79SHyon Kim
67*9e86db79SHyon Kim return (DI_WALK_CONTINUE);
68*9e86db79SHyon Kim }
69*9e86db79SHyon Kim
70*9e86db79SHyon Kim /*
71*9e86db79SHyon Kim * Refreshes information about an HBA
72*9e86db79SHyon Kim *
73*9e86db79SHyon Kim * Note: This routine holds the locks in write mode
74*9e86db79SHyon Kim * during most of the processing, and as such, will cause
75*9e86db79SHyon Kim * all other threads to block on entry into the library
76*9e86db79SHyon Kim * until the refresh is complete. An optimization would be
77*9e86db79SHyon Kim * to put fine-grain locking in for the open_handle structures.
78*9e86db79SHyon Kim */
79*9e86db79SHyon Kim void
Sun_sasRefreshAdapterConfiguration()80*9e86db79SHyon Kim Sun_sasRefreshAdapterConfiguration()
81*9e86db79SHyon Kim {
82*9e86db79SHyon Kim const char ROUTINE[] =
83*9e86db79SHyon Kim "Sun_sasRefreshAdapterConfiguration";
84*9e86db79SHyon Kim struct sun_sas_hba *hba_ptr;
85*9e86db79SHyon Kim di_node_t root;
86*9e86db79SHyon Kim hrtime_t start;
87*9e86db79SHyon Kim hrtime_t end;
88*9e86db79SHyon Kim double duration;
89*9e86db79SHyon Kim walkarg_t wa;
90*9e86db79SHyon Kim
91*9e86db79SHyon Kim /*
92*9e86db79SHyon Kim * We're going to be tweaking a lot of global lists, so write
93*9e86db79SHyon Kim * lock them.
94*9e86db79SHyon Kim */
95*9e86db79SHyon Kim lock(&all_hbas_lock);
96*9e86db79SHyon Kim lock(&open_handles_lock);
97*9e86db79SHyon Kim
98*9e86db79SHyon Kim start = gethrtime();
99*9e86db79SHyon Kim /* Grab device tree */
100*9e86db79SHyon Kim if ((root = di_init("/", DINFOCACHE)) == DI_NODE_NIL) {
101*9e86db79SHyon Kim log(LOG_DEBUG, ROUTINE,
102*9e86db79SHyon Kim "Unable to load device tree for reason \"%s\"",
103*9e86db79SHyon Kim strerror(errno));
104*9e86db79SHyon Kim unlock(&open_handles_lock);
105*9e86db79SHyon Kim unlock(&all_hbas_lock);
106*9e86db79SHyon Kim return;
107*9e86db79SHyon Kim }
108*9e86db79SHyon Kim
109*9e86db79SHyon Kim end = gethrtime();
110*9e86db79SHyon Kim duration = end - start;
111*9e86db79SHyon Kim duration /= HR_SECOND;
112*9e86db79SHyon Kim log(LOG_DEBUG, ROUTINE, "Device tree init took "
113*9e86db79SHyon Kim "%.6f seconds", duration);
114*9e86db79SHyon Kim
115*9e86db79SHyon Kim for (hba_ptr = global_hba_head; hba_ptr != NULL;
116*9e86db79SHyon Kim hba_ptr = hba_ptr->next) {
117*9e86db79SHyon Kim wa.devpath = hba_ptr->device_path;
118*9e86db79SHyon Kim wa.flag = (boolean_t *)calloc(1, sizeof (boolean_t));
119*9e86db79SHyon Kim *wa.flag = B_FALSE;
120*9e86db79SHyon Kim
121*9e86db79SHyon Kim if (di_walk_node(root, DI_WALK_SIBFIRST, &wa,
122*9e86db79SHyon Kim find_matching_hba) != 0) {
123*9e86db79SHyon Kim log(LOG_DEBUG, ROUTINE, "di_walk_node failed.");
124*9e86db79SHyon Kim unlock(&open_handles_lock);
125*9e86db79SHyon Kim unlock(&all_hbas_lock);
126*9e86db79SHyon Kim S_FREE(wa.flag);
127*9e86db79SHyon Kim di_fini(root);
128*9e86db79SHyon Kim return;
129*9e86db79SHyon Kim }
130*9e86db79SHyon Kim
131*9e86db79SHyon Kim if (*wa.flag == B_FALSE) {
132*9e86db79SHyon Kim /*
133*9e86db79SHyon Kim * Keep the HBA as it is including open handles
134*9e86db79SHyon Kim * per the SM-HBA standards. Just mark it as invalid.
135*9e86db79SHyon Kim */
136*9e86db79SHyon Kim log(LOG_DEBUG, ROUTINE, "No matching HBA found. %s",
137*9e86db79SHyon Kim hba_ptr->device_path);
138*9e86db79SHyon Kim hba_ptr->invalid = B_TRUE;
139*9e86db79SHyon Kim }
140*9e86db79SHyon Kim S_FREE(wa.flag);
141*9e86db79SHyon Kim }
142*9e86db79SHyon Kim
143*9e86db79SHyon Kim /*
144*9e86db79SHyon Kim * Now we marked missing HBA(s). Redisoover hbas to refresh
145*9e86db79SHyon Kim * or add any new adapter to the hba list.
146*9e86db79SHyon Kim * Simply call devtree_get_all_hbas().
147*9e86db79SHyon Kim */
148*9e86db79SHyon Kim if (devtree_get_all_hbas(root) != HBA_STATUS_OK) {
149*9e86db79SHyon Kim log(LOG_DEBUG, ROUTINE, "devtree_get_all_hbas failed.");
150*9e86db79SHyon Kim }
151*9e86db79SHyon Kim di_fini(root);
152*9e86db79SHyon Kim
153*9e86db79SHyon Kim unlock(&open_handles_lock);
154*9e86db79SHyon Kim unlock(&all_hbas_lock);
155*9e86db79SHyon Kim }
156