IPMI(4) BSD Kernel Interfaces Manual IPMI(4)
NAME
ipmi -- OpenIPMI compatible IPMI interface driver
SYNOPSIS
device ipmi
To manually specify I/O attachment in /boot/device.hints:
hint.ipmi.0.at="isa"
hint.ipmi.0.port="0xCA2"
hint.ipmi.0.spacing="8"
hint.ipmi.0.mode="KCS"
To manually specify memory attachment in /boot/device.hints:
hint.ipmi.0.at="isa"
hint.ipmi.0.maddr="0xf0000000"
hint.ipmi.0.spacing="8"
hint.ipmi.0.mode="SMIC"
Meaning of spacing:
8 8 bit alignment
16 16 bit alignment
32 32 bit alignment
If the port and spacing are not specified the interface type default will be used. Only specify either the port for I/O access or maddr for
memory access.
DESCRIPTION
The IPMI (Intelligent Platform Management Interface) is a standard for monitoring system hardware by permitting generic code to detect and
monitor the sensors in a system. The IPMI standard offers watchdog support, an FRU database, and other support extensions. It is currently
being adopted by the makers of many single board and embedded system manufacturers.
The ipmi driver in FreeBSD is heavily adopted from the standard and Linux driver; however, not all features described in the standard are
supported.
IOCTLS
Sending and receiving messages through the ipmi driver requires the use of ioctl(2). The ioctls are used due to the complexity of data sent
to and from the device. The ioctl(2) command codes below are defined in <sys/ipmi.h>. The third argument to ioctl(2) should be a pointer to
the type indicated.
Currently the following ioctls are supported:
IPMICTL_RECEIVE_MSG (struct ipmi_recv)
Receive a message. Possible error values:
[EAGAIN] No messages are in the process queue.
[EFAULT] An address supplied was invalid.
[EMSGSIZE] The address could not fit in the message buffer and will remain in the buffer.
IPMICTL_RECEIVE_MSG_TRUNC (struct ipmi_recv)
Like IPMICTL_RECEIVE_MSG but if the message cannot fit into the buffer, it will truncate the contents instead of leaving the data in
the buffer.
IPMICTL_SEND_COMMAND (struct ipmi_req)
Send a message to the interface. Possible error values:
[EFAULT] An address supplied was invalid.
[ENOMEM] Buffers could not be allowed for the command, out of memory.
IPMICTL_SET_MY_ADDRESS_CMD (unsigned int)
Set the slave address for source messages.
IPMICTL_GET_MY_ADDRESS_CMD (unsigned int)
Get the slave address for source messages.
IPMICTL_SET_MY_LUN_CMD (unsigned int)
Set the slave LUN for source messages.
IPMICTL_GET_MY_LUN_CMD (unsigned int)
Get the slave LUN for source messages.
Unimplemented Ioctls
IPMICTL_REGISTER_FOR_CMD (struct ipmi_cmdspec)
Register to receive a specific command. Possible error values:
[EFAULT] An supplied address was invalid.
[EBUSY] The network function/command is already in use.
[ENOMEM] Could not allocate memory.
IPMICTL_UNREGISTER_FOR_CMD (struct ipmi_cmdspec)
Unregister to receive a specific command. Possible error values:
[EFAULT] An address supplied was invalid.
[ENOENT] The network function/command was not found.
Stub Only Ioctl
IPMICTL_SET_GETS_EVENTS_CMD (int)
Set whether this interface receives events. Possible error values:
[EFAULT] An address supplied was invalid.
SEE ALSO
ioctl(2), watchdog(4), watchdog(8), watchdogd(8), watchdog(9)
HISTORY
The ipmi driver first appeared in FreeBSD 6.2.
AUTHORS
The ipmi driver was written by Doug Ambrisko <ambrisko@FreeBSD.org>. This manual page was written by Tom Rhodes <trhodes@FreeBSD.org>.
BUGS
Not all features of the MontaVista driver are supported.
Currently, IPMB and BT modes are not implemented.
BSD
July 10, 2007 BSD