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/*
* CDDL HEADER START
*
* The contents of this file are subject to the terms of the
* Common Development and Distribution License (the "License").
* You may not use this file except in compliance with the License.
*
* You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
* or http://www.opensolaris.org/os/licensing.
* See the License for the specific language governing permissions
* and limitations under the License.
*
* When distributing Covered Code, include this CDDL HEADER in each
* file and include the License file at usr/src/OPENSOLARIS.LICENSE.
* If applicable, add the following below this CDDL HEADER, with the
* fields enclosed by brackets "[]" replaced with your own identifying
* information: Portions Copyright [yyyy] [name of copyright owner]
*
* CDDL HEADER END
*/
/*
* Copyright 2010 Sun Microsystems, Inc. All rights reserved.
* Use is subject to license terms.
* Copyright 2012 Joyent, Inc. All rights reserved.
*/
#include <errno.h>
#include <fcntl.h>
#include <libipmi.h>
#include <stddef.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <stropts.h>
#include <unistd.h>
#include <sys/ipmi.h>
#include "ipmi_impl.h"
/*
* IPMI transport for the local BMC at /dev/ipmi0.
*/
typedef struct ipmi_bmc {
ipmi_handle_t *ib_ihp; /* ipmi handle */
int ib_fd; /* /dev/ipmi0 filedescriptor */
uint32_t ib_msgseq; /* message sequence number */
uint8_t *ib_msg; /* message buffer */
size_t ib_msglen; /* size of message buffer */
} ipmi_bmc_t;
#define BMC_DEV "/dev/ipmi0"
static void
ipmi_bmc_close(void *data)
{
ipmi_bmc_t *ibp = data;
ipmi_free(ibp->ib_ihp, ibp->ib_msg);
(void) close(ibp->ib_fd);
ipmi_free(ibp->ib_ihp, ibp);
}
/*ARGSUSED*/
static void *
ipmi_bmc_open(ipmi_handle_t *ihp, nvlist_t *params)
{
ipmi_bmc_t *ibp;
if ((ibp = ipmi_zalloc(ihp, sizeof (ipmi_bmc_t))) == NULL)
return (NULL);
ibp->ib_ihp = ihp;
/* open /dev/ipmi0 */
if ((ibp->ib_fd = open(BMC_DEV, O_RDWR)) < 0) {
ipmi_free(ihp, ibp);
(void) ipmi_set_error(ihp, EIPMI_BMC_OPEN_FAILED, "%s",
strerror(errno));
return (NULL);
}
if ((ibp->ib_msg = (uint8_t *)ipmi_zalloc(ihp, BUFSIZ)) == NULL) {
ipmi_bmc_close(ibp);
return (NULL);
}
ibp->ib_msglen = BUFSIZ;
return (ibp);
}
static int
ipmi_bmc_send(void *data, ipmi_cmd_t *cmd, ipmi_cmd_t *response,
int *completion)
{
ipmi_bmc_t *ibp = data;
struct ipmi_req req;
struct ipmi_recv recv;
struct ipmi_addr addr;
fd_set rset;
struct ipmi_system_interface_addr bmc_addr;
bmc_addr.addr_type = IPMI_SYSTEM_INTERFACE_ADDR_TYPE;
bmc_addr.channel = IPMI_BMC_CHANNEL;
bmc_addr.lun = cmd->ic_lun;
(void) memset(&req, 0, sizeof (struct ipmi_req));
req.addr = (unsigned char *) &bmc_addr;
req.addr_len = sizeof (bmc_addr);
req.msgid = ibp->ib_msgseq++;
req.msg.netfn = cmd->ic_netfn;
req.msg.cmd = cmd->ic_cmd;
req.msg.data = cmd->ic_data;
req.msg.data_len = cmd->ic_dlen;
if (ioctl(ibp->ib_fd, IPMICTL_SEND_COMMAND, &req) < 0) {
(void) ipmi_set_error(ibp->ib_ihp, EIPMI_BMC_PUTMSG, "%s",
strerror(errno));
return (-1);
}
/* get the response from the BMC */
FD_ZERO(&rset);
FD_SET(ibp->ib_fd, &rset);
if (select(ibp->ib_fd + 1, &rset, NULL, NULL, NULL) < 0) {
(void) ipmi_set_error(ibp->ib_ihp, EIPMI_BMC_GETMSG, "%s",
strerror(errno));
return (-1);
}
if (FD_ISSET(ibp->ib_fd, &rset) == 0) {
(void) ipmi_set_error(ibp->ib_ihp, EIPMI_BMC_GETMSG, "%s",
"No data available");
return (-1);
}
recv.addr = (unsigned char *) &addr;
recv.addr_len = sizeof (addr);
recv.msg.data = (unsigned char *)ibp->ib_msg;
recv.msg.data_len = ibp->ib_msglen;
/* get data */
if (ioctl(ibp->ib_fd, IPMICTL_RECEIVE_MSG_TRUNC, &recv) < 0) {
(void) ipmi_set_error(ibp->ib_ihp, EIPMI_BMC_GETMSG, "%s",
strerror(errno));
return (-1);
}
if (recv.recv_type != IPMI_RESPONSE_RECV_TYPE) {
(void) ipmi_set_error(ibp->ib_ihp, EIPMI_BMC_RESPONSE,
"unknown BMC message type %d", recv.recv_type);
return (-1);
}
response->ic_netfn = recv.msg.netfn;
/* The lun is not returned in addr, return the lun passed in */
response->ic_lun = cmd->ic_lun;
response->ic_cmd = recv.msg.cmd;
if (recv.msg.data[0] != 0) {
*completion = recv.msg.data[0];
response->ic_dlen = 0;
response->ic_data = NULL;
} else {
*completion = 0;
response->ic_dlen = (recv.msg.data_len > 0) ?
recv.msg.data_len - 1 : 0;
response->ic_data = &(recv.msg.data[1]);
}
return (0);
}
ipmi_transport_t ipmi_transport_bmc = {
ipmi_bmc_open,
ipmi_bmc_close,
ipmi_bmc_send
};
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