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 #include <sys/stat.h>
27 #include <sys/types.h>
28 #include <sys/time.h>
29 #include <sys/systm.h>
30
31 #include <sys/fm/protocol.h>
32 #include <sys/devfm.h>
33
34 extern int cpu_get_mem_addr(char *, char *, uint64_t, uint64_t *);
35
36 int
fm_get_paddr(nvlist_t * nvl,uint64_t * paddr)37 fm_get_paddr(nvlist_t *nvl, uint64_t *paddr)
38 {
39 uint8_t version;
40 uint64_t pa;
41 char *scheme;
42 int err;
43 uint64_t offset;
44 char *unum;
45 char **serids;
46 uint_t nserids;
47
48 /* Verify FMRI scheme name and version number */
49 if ((nvlist_lookup_string(nvl, FM_FMRI_SCHEME, &scheme) != 0) ||
50 (strcmp(scheme, FM_FMRI_SCHEME_MEM) != 0) ||
51 (nvlist_lookup_uint8(nvl, FM_VERSION, &version) != 0) ||
52 version > FM_MEM_SCHEME_VERSION) {
53 return (EINVAL);
54 }
55
56 /*
57 * There are two ways a physical address can be obtained from a mem
58 * scheme FMRI. One way is to use the "offset" and "serial"
59 * members, if they are present, together with the "unum" member to
60 * calculate a physical address. This is the preferred way since
61 * it is independent of possible changes to the programming of
62 * underlying hardware registers that may change the physical address.
63 * If the "offset" member is not present, then the address is
64 * retrieved from the "physaddr" member.
65 */
66 if (nvlist_lookup_uint64(nvl, FM_FMRI_MEM_OFFSET, &offset) != 0) {
67 if (nvlist_lookup_uint64(nvl, FM_FMRI_MEM_PHYSADDR, &pa) !=
68 0) {
69 return (EINVAL);
70 }
71 } else if (nvlist_lookup_string(nvl, FM_FMRI_MEM_UNUM, &unum) != 0 ||
72 nvlist_lookup_string_array(nvl, FM_FMRI_MEM_SERIAL_ID, &serids,
73 &nserids) != 0) {
74 return (EINVAL);
75 } else {
76 err = cpu_get_mem_addr(unum, serids[0], offset, &pa);
77 if (err != 0) {
78 if (err == ENOTSUP) {
79 /* Fall back to physaddr */
80 if (nvlist_lookup_uint64(nvl,
81 FM_FMRI_MEM_PHYSADDR, &pa) != 0)
82 return (EINVAL);
83 } else
84 return (err);
85 }
86 }
87
88 *paddr = pa;
89 return (0);
90 }
91