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 2008 Sun Microsystems, Inc. All rights reserved.
23 * Use is subject to license terms.
24 */
25
26 /*
27 * Case management and saved state restoration
28 */
29
30 #include <gmem_state.h>
31 #include <gmem_mem.h>
32 #include <gmem_page.h>
33 #include <gmem_dimm.h>
34 #include <gmem.h>
35
36 #include <string.h>
37 #include <fm/fmd_api.h>
38
39 /* Must be in sync with gmem_ptrsubtype_t */
40 static gmem_case_closer_f *const gmem_case_closers[] = {
41 NULL,
42 gmem_dimm_close, /* GMEM_PTR_DIMM_CASE */
43 gmem_page_close, /* GMEM_PTR_PAGE_CASE */
44 };
45
46 fmd_case_t *
gmem_case_create(fmd_hdl_t * hdl,gmem_header_t * hdr,gmem_ptrsubtype_t ptrsubtype,const char ** uuidp)47 gmem_case_create(fmd_hdl_t *hdl, gmem_header_t *hdr,
48 gmem_ptrsubtype_t ptrsubtype, const char **uuidp)
49 {
50 gmem_case_ptr_t ptr;
51 gmem_case_closer_t *cl;
52 fmd_case_t *cp;
53
54 cl = fmd_hdl_alloc(hdl, sizeof (gmem_case_closer_t), FMD_SLEEP);
55 cl->cl_func = gmem_case_closers[ptrsubtype];
56 cl->cl_arg = hdr;
57
58 cp = fmd_case_open(hdl, cl);
59
60 ptr.ptr_type = hdr->hdr_nodetype;
61 ptr.ptr_subtype = ptrsubtype;
62 (void) strcpy(ptr.ptr_name, hdr->hdr_bufname);
63
64 *uuidp = fmd_case_uuid(hdl, cp);
65 fmd_buf_write(hdl, cp, *uuidp, &ptr, sizeof (gmem_case_ptr_t));
66
67 return (cp);
68 }
69
70 void
gmem_case_redirect(fmd_hdl_t * hdl,fmd_case_t * cp,gmem_ptrsubtype_t newsubtype)71 gmem_case_redirect(fmd_hdl_t *hdl, fmd_case_t *cp, gmem_ptrsubtype_t newsubtype)
72 {
73 const char *uuid = fmd_case_uuid(hdl, cp);
74 gmem_case_ptr_t ptr;
75
76 fmd_buf_read(hdl, cp, uuid, &ptr, sizeof (gmem_case_ptr_t));
77 fmd_hdl_debug(hdl, "redirecting case %s from %d to %d\n", uuid,
78 ptr.ptr_subtype, newsubtype);
79 ptr.ptr_subtype = newsubtype;
80 fmd_buf_write(hdl, cp, uuid, &ptr, sizeof (gmem_case_ptr_t));
81 }
82
83 void
gmem_case_fini(fmd_hdl_t * hdl,fmd_case_t * cp,int close)84 gmem_case_fini(fmd_hdl_t *hdl, fmd_case_t *cp, int close)
85 {
86 const char *uuid = fmd_case_uuid(hdl, cp);
87 gmem_case_closer_t *cl = fmd_case_getspecific(hdl, cp);
88
89 if (close) {
90 fmd_hdl_debug(hdl, "closing case %s\n", uuid);
91
92 if (fmd_serd_exists(hdl, uuid))
93 fmd_serd_destroy(hdl, uuid);
94
95 if (fmd_buf_size(hdl, cp, uuid) != 0)
96 fmd_buf_destroy(hdl, cp, uuid);
97
98 fmd_case_setspecific(hdl, cp, NULL);
99 fmd_case_close(hdl, cp);
100 }
101
102 if (cl != NULL)
103 fmd_hdl_free(hdl, cl, sizeof (gmem_case_closer_t));
104 }
105
106 /* Must be in sync with gmem_nodetype_t */
107 static gmem_case_restorer_f *const gmem_case_restorers[] = {
108 NULL,
109 gmem_dimm_restore, /* CMD_NT_DIMM */
110 gmem_page_restore, /* CMD_NT_PAGE */
111 };
112
113 int
gmem_state_restore(fmd_hdl_t * hdl)114 gmem_state_restore(fmd_hdl_t *hdl)
115 {
116 fmd_case_t *cp = NULL;
117
118 while ((cp = fmd_case_next(hdl, cp)) != NULL) {
119 const char *uuid = fmd_case_uuid(hdl, cp);
120 gmem_case_closer_t *cl;
121 gmem_case_ptr_t ptr;
122 void *thing;
123 size_t sz;
124
125 if ((sz = fmd_buf_size(hdl, cp, uuid)) == 0)
126 continue;
127 else if (sz != sizeof (gmem_case_ptr_t))
128 return (gmem_set_errno(EINVAL));
129
130 fmd_buf_read(hdl, cp, fmd_case_uuid(hdl, cp), &ptr,
131 sizeof (gmem_case_ptr_t));
132
133 if (ptr.ptr_type == 0 || ptr.ptr_type >
134 sizeof (gmem_case_restorers) /
135 sizeof (gmem_case_restorer_f *))
136 return (gmem_set_errno(EINVAL));
137
138 if ((thing = gmem_case_restorers[ptr.ptr_type](hdl,
139 cp, &ptr)) == NULL) {
140 fmd_hdl_debug(hdl, "Unable to restore case %s\n", uuid);
141 continue;
142 }
143
144 cl = fmd_hdl_alloc(hdl, sizeof (gmem_case_closer_t), FMD_SLEEP);
145 cl->cl_func = gmem_case_closers[ptr.ptr_subtype];
146 cl->cl_arg = thing;
147 fmd_case_setspecific(hdl, cp, cl);
148 }
149
150 gmem_dimm_validate(hdl);
151 gmem_page_validate(hdl);
152
153 return (0);
154 }
155
156 void
gmem_case_restore(fmd_hdl_t * hdl,gmem_case_t * cc,fmd_case_t * cp,char * serdnm)157 gmem_case_restore(fmd_hdl_t *hdl, gmem_case_t *cc, fmd_case_t *cp, char *serdnm)
158 {
159 if (!fmd_serd_exists(hdl, serdnm)) {
160 fmd_hdl_strfree(hdl, serdnm);
161 serdnm = NULL;
162 }
163
164 cc->cc_cp = cp;
165 cc->cc_serdnm = serdnm;
166 }
167