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 2010 Sun Microsystems, Inc. All rights reserved.
23 * Use is subject to license terms.
24 * Copyright 2012 Joyent, Inc. All rights reserved.
25 */
26
27 #include <errno.h>
28 #include <fcntl.h>
29 #include <libipmi.h>
30 #include <stddef.h>
31 #include <stdio.h>
32 #include <stdlib.h>
33 #include <string.h>
34 #include <stropts.h>
35 #include <unistd.h>
36
37 #include <sys/ipmi.h>
38
39 #include "ipmi_impl.h"
40
41 /*
42 * IPMI transport for the local BMC at /dev/ipmi0.
43 */
44
45 typedef struct ipmi_bmc {
46 ipmi_handle_t *ib_ihp; /* ipmi handle */
47 int ib_fd; /* /dev/ipmi0 filedescriptor */
48 uint32_t ib_msgseq; /* message sequence number */
49 uint8_t *ib_msg; /* message buffer */
50 size_t ib_msglen; /* size of message buffer */
51 } ipmi_bmc_t;
52
53 #define BMC_DEV "/dev/ipmi0"
54
55 static void
ipmi_bmc_close(void * data)56 ipmi_bmc_close(void *data)
57 {
58 ipmi_bmc_t *ibp = data;
59
60 ipmi_free(ibp->ib_ihp, ibp->ib_msg);
61
62 (void) close(ibp->ib_fd);
63
64 ipmi_free(ibp->ib_ihp, ibp);
65 }
66
67 /*ARGSUSED*/
68 static void *
ipmi_bmc_open(ipmi_handle_t * ihp,nvlist_t * params)69 ipmi_bmc_open(ipmi_handle_t *ihp, nvlist_t *params)
70 {
71 ipmi_bmc_t *ibp;
72
73 if ((ibp = ipmi_zalloc(ihp, sizeof (ipmi_bmc_t))) == NULL)
74 return (NULL);
75 ibp->ib_ihp = ihp;
76
77 /* open /dev/ipmi0 */
78 if ((ibp->ib_fd = open(BMC_DEV, O_RDWR)) < 0) {
79 ipmi_free(ihp, ibp);
80 (void) ipmi_set_error(ihp, EIPMI_BMC_OPEN_FAILED, "%s",
81 strerror(errno));
82 return (NULL);
83 }
84
85 if ((ibp->ib_msg = (uint8_t *)ipmi_zalloc(ihp, BUFSIZ)) == NULL) {
86 ipmi_bmc_close(ibp);
87 return (NULL);
88 }
89 ibp->ib_msglen = BUFSIZ;
90
91 return (ibp);
92 }
93
94 static int
ipmi_bmc_send(void * data,ipmi_cmd_t * cmd,ipmi_cmd_t * response,int * completion)95 ipmi_bmc_send(void *data, ipmi_cmd_t *cmd, ipmi_cmd_t *response,
96 int *completion)
97 {
98 ipmi_bmc_t *ibp = data;
99 struct ipmi_req req;
100 struct ipmi_recv recv;
101 struct ipmi_addr addr;
102 fd_set rset;
103 struct ipmi_system_interface_addr bmc_addr;
104
105 bmc_addr.addr_type = IPMI_SYSTEM_INTERFACE_ADDR_TYPE;
106 bmc_addr.channel = IPMI_BMC_CHANNEL;
107 bmc_addr.lun = cmd->ic_lun;
108
109 (void) memset(&req, 0, sizeof (struct ipmi_req));
110
111 req.addr = (unsigned char *) &bmc_addr;
112 req.addr_len = sizeof (bmc_addr);
113
114 req.msgid = ibp->ib_msgseq++;
115 req.msg.netfn = cmd->ic_netfn;
116 req.msg.cmd = cmd->ic_cmd;
117 req.msg.data = cmd->ic_data;
118 req.msg.data_len = cmd->ic_dlen;
119
120 if (ioctl(ibp->ib_fd, IPMICTL_SEND_COMMAND, &req) < 0) {
121 (void) ipmi_set_error(ibp->ib_ihp, EIPMI_BMC_PUTMSG, "%s",
122 strerror(errno));
123 return (-1);
124 }
125
126 /* get the response from the BMC */
127
128 FD_ZERO(&rset);
129 FD_SET(ibp->ib_fd, &rset);
130
131 if (select(ibp->ib_fd + 1, &rset, NULL, NULL, NULL) < 0) {
132 (void) ipmi_set_error(ibp->ib_ihp, EIPMI_BMC_GETMSG, "%s",
133 strerror(errno));
134 return (-1);
135 }
136 if (FD_ISSET(ibp->ib_fd, &rset) == 0) {
137 (void) ipmi_set_error(ibp->ib_ihp, EIPMI_BMC_GETMSG, "%s",
138 "No data available");
139 return (-1);
140 }
141
142 recv.addr = (unsigned char *) &addr;
143 recv.addr_len = sizeof (addr);
144 recv.msg.data = (unsigned char *)ibp->ib_msg;
145 recv.msg.data_len = ibp->ib_msglen;
146
147 /* get data */
148 if (ioctl(ibp->ib_fd, IPMICTL_RECEIVE_MSG_TRUNC, &recv) < 0) {
149 (void) ipmi_set_error(ibp->ib_ihp, EIPMI_BMC_GETMSG, "%s",
150 strerror(errno));
151 return (-1);
152 }
153
154 if (recv.recv_type != IPMI_RESPONSE_RECV_TYPE) {
155 (void) ipmi_set_error(ibp->ib_ihp, EIPMI_BMC_RESPONSE,
156 "unknown BMC message type %d", recv.recv_type);
157 return (-1);
158 }
159
160 response->ic_netfn = recv.msg.netfn;
161 /* The lun is not returned in addr, return the lun passed in */
162 response->ic_lun = cmd->ic_lun;
163 response->ic_cmd = recv.msg.cmd;
164 if (recv.msg.data[0] != 0) {
165 *completion = recv.msg.data[0];
166 response->ic_dlen = 0;
167 response->ic_data = NULL;
168 } else {
169 *completion = 0;
170 response->ic_dlen = (recv.msg.data_len > 0) ?
171 recv.msg.data_len - 1 : 0;
172 response->ic_data = &(recv.msg.data[1]);
173 }
174
175 return (0);
176 }
177
178 ipmi_transport_t ipmi_transport_bmc = {
179 ipmi_bmc_open,
180 ipmi_bmc_close,
181 ipmi_bmc_send
182 };
183