xref: /illumos-gate/usr/src/lib/libipmi/common/ipmi_misc.c (revision f5488aa822e08905cde61d596e965030a1dfffcd)
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 #pragma ident	"%Z%%M%	%I%	%E% SMI"
27 
28 #include <libipmi.h>
29 #include <stdio.h>
30 #include <string.h>
31 
32 #include "ipmi_impl.h"
33 
34 ipmi_deviceid_t *
35 ipmi_get_deviceid(ipmi_handle_t *ihp)
36 {
37 	ipmi_cmd_t cmd, *resp;
38 	uint16_t id_prod;
39 
40 	if (ihp->ih_deviceid != NULL)
41 		return (ihp->ih_deviceid);
42 
43 	cmd.ic_netfn = IPMI_NETFN_APP;
44 	cmd.ic_lun = 0;
45 	cmd.ic_cmd = IPMI_CMD_GET_DEVICEID;
46 	cmd.ic_data = NULL;
47 	cmd.ic_dlen = 0;
48 
49 	if ((resp = ipmi_send(ihp, &cmd)) == NULL)
50 		return (NULL);
51 
52 	if (resp->ic_dlen < sizeof (ipmi_deviceid_t)) {
53 		(void) ipmi_set_error(ihp, EIPMI_BAD_RESPONSE_LENGTH, NULL);
54 		return (NULL);
55 	}
56 
57 	/*
58 	 * The devid response data may include additional data beyond the end of
59 	 * the normal structure, so we copy the entire response.
60 	 */
61 	if ((ihp->ih_deviceid = ipmi_alloc(ihp, resp->ic_dlen)) == NULL)
62 		return (NULL);
63 
64 	(void) memcpy(ihp->ih_deviceid, resp->ic_data, resp->ic_dlen);
65 	id_prod = LE_IN16(&ihp->ih_deviceid->id_product);
66 	(void) memcpy(&ihp->ih_deviceid->id_product, &id_prod,
67 	    sizeof (id_prod));
68 	ihp->ih_deviceid_len = resp->ic_dlen;
69 
70 	return (ihp->ih_deviceid);
71 }
72 
73 /*
74  * Returns the firmware revision as a string.  This does the work of converting
75  * the deviceid data into a human readable string (decoding the BCD values).
76  * It also encodes the fact that Sun ILOM includes the additional micro revision
77  * at the end of the deviceid information.
78  */
79 const char *
80 ipmi_firmware_version(ipmi_handle_t *ihp)
81 {
82 	ipmi_deviceid_t *dp;
83 	uint8_t *auxrev;
84 	size_t len;
85 	char rev[128];
86 	int i;
87 
88 	if (ihp->ih_firmware_rev != NULL)
89 		return (ihp->ih_firmware_rev);
90 
91 	if ((dp = ipmi_get_deviceid(ihp)) == NULL)
92 		return (NULL);
93 
94 	/*
95 	 * Start with the major an minor revision numbers
96 	 */
97 	(void) snprintf(rev, sizeof (rev), "%d.%d", dp->id_firm_major,
98 	    ipmi_convert_bcd(dp->id_firm_minor));
99 
100 	if (ipmi_is_sun_ilom(dp) &&
101 	    ihp->ih_deviceid_len >= sizeof (ipmi_deviceid_t) + 4) {
102 		/*
103 		 * With Sun ILOM we have the micro revision at the end of the
104 		 * deviceid.  The first two bytes of the aux revision field are
105 		 * the platform version and release version.
106 		 */
107 		auxrev = (uint8_t *)dp + sizeof (ipmi_deviceid_t);
108 		for (i = 0; i < 2; i++) {
109 			if (auxrev[i] == 0)
110 				continue;
111 
112 			len = strlen(rev);
113 			(void) snprintf(rev + len, sizeof (rev) - len, ".%u",
114 			    auxrev[i]);
115 		}
116 	}
117 
118 	if ((ihp->ih_firmware_rev = ipmi_strdup(ihp, rev)) == NULL)
119 		return (NULL);
120 
121 	return (ihp->ih_firmware_rev);
122 }
123