444 lines
15 KiB
C
444 lines
15 KiB
C
/* SPDX-License-Identifier: GPL-2.0+ WITH Linux-syscall-note */
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/*
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* ipmi.h
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*
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* MontaVista IPMI interface
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*
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* Author: MontaVista Software, Inc.
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* Corey Minyard <minyard@mvista.com>
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* source@mvista.com
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*
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* Copyright 2002 MontaVista Software Inc.
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*
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*/
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#ifndef _UAPI__LINUX_IPMI_H
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#define _UAPI__LINUX_IPMI_H
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#include <linux/ipmi_msgdefs.h>
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#include <linux/compiler.h>
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/*
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* This file describes an interface to an IPMI driver. You have to
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* have a fairly good understanding of IPMI to use this, so go read
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* the specs first before actually trying to do anything.
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*
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* With that said, this driver provides a multi-user interface to the
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* IPMI driver, and it allows multiple IPMI physical interfaces below
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* the driver. The physical interfaces bind as a lower layer on the
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* driver. They appear as interfaces to the application using this
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* interface.
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*
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* Multi-user means that multiple applications may use the driver,
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* send commands, receive responses, etc. The driver keeps track of
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* commands the user sends and tracks the responses. The responses
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* will go back to the application that send the command. If the
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* response doesn't come back in time, the driver will return a
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* timeout error response to the application. Asynchronous events
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* from the BMC event queue will go to all users bound to the driver.
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* The incoming event queue in the BMC will automatically be flushed
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* if it becomes full and it is queried once a second to see if
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* anything is in it. Incoming commands to the driver will get
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* delivered as commands.
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*/
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/*
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* This is an overlay for all the address types, so it's easy to
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* determine the actual address type. This is kind of like addresses
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* work for sockets.
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*/
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#define IPMI_MAX_ADDR_SIZE 32
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struct ipmi_addr {
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/* Try to take these from the "Channel Medium Type" table
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in section 6.5 of the IPMI 1.5 manual. */
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int addr_type;
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short channel;
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char data[IPMI_MAX_ADDR_SIZE];
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};
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/*
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* When the address is not used, the type will be set to this value.
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* The channel is the BMC's channel number for the channel (usually
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* 0), or IPMC_BMC_CHANNEL if communicating directly with the BMC.
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*/
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#define IPMI_SYSTEM_INTERFACE_ADDR_TYPE 0x0c
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struct ipmi_system_interface_addr {
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int addr_type;
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short channel;
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unsigned char lun;
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};
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/* An IPMB Address. */
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#define IPMI_IPMB_ADDR_TYPE 0x01
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/* Used for broadcast get device id as described in section 17.9 of the
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IPMI 1.5 manual. */
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#define IPMI_IPMB_BROADCAST_ADDR_TYPE 0x41
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struct ipmi_ipmb_addr {
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int addr_type;
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short channel;
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unsigned char slave_addr;
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unsigned char lun;
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};
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/*
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* Used for messages received directly from an IPMB that have not gone
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* through a MC. This is for systems that sit right on an IPMB so
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* they can receive commands and respond to them.
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*/
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#define IPMI_IPMB_DIRECT_ADDR_TYPE 0x81
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struct ipmi_ipmb_direct_addr {
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int addr_type;
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short channel;
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unsigned char slave_addr;
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unsigned char rs_lun;
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unsigned char rq_lun;
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};
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/*
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* A LAN Address. This is an address to/from a LAN interface bridged
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* by the BMC, not an address actually out on the LAN.
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*
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* A conscious decision was made here to deviate slightly from the IPMI
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* spec. We do not use rqSWID and rsSWID like it shows in the
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* message. Instead, we use remote_SWID and local_SWID. This means
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* that any message (a request or response) from another device will
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* always have exactly the same address. If you didn't do this,
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* requests and responses from the same device would have different
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* addresses, and that's not too cool.
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*
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* In this address, the remote_SWID is always the SWID the remote
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* message came from, or the SWID we are sending the message to.
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* local_SWID is always our SWID. Note that having our SWID in the
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* message is a little weird, but this is required.
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*/
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#define IPMI_LAN_ADDR_TYPE 0x04
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struct ipmi_lan_addr {
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int addr_type;
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short channel;
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unsigned char privilege;
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unsigned char session_handle;
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unsigned char remote_SWID;
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unsigned char local_SWID;
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unsigned char lun;
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};
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/*
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* Channel for talking directly with the BMC. When using this
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* channel, This is for the system interface address type only. FIXME
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* - is this right, or should we use -1?
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*/
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#define IPMI_BMC_CHANNEL 0xf
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#define IPMI_NUM_CHANNELS 0x10
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/*
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* Used to signify an "all channel" bitmask. This is more than the
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* actual number of channels because this is used in userland and
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* will cover us if the number of channels is extended.
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*/
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#define IPMI_CHAN_ALL (~0)
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/*
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* A raw IPMI message without any addressing. This covers both
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* commands and responses. The completion code is always the first
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* byte of data in the response (as the spec shows the messages laid
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* out).
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*/
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struct ipmi_msg {
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unsigned char netfn;
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unsigned char cmd;
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unsigned short data_len;
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unsigned char __user *data;
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};
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struct kernel_ipmi_msg {
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unsigned char netfn;
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unsigned char cmd;
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unsigned short data_len;
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unsigned char *data;
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};
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/*
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* Various defines that are useful for IPMI applications.
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*/
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#define IPMI_INVALID_CMD_COMPLETION_CODE 0xC1
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#define IPMI_TIMEOUT_COMPLETION_CODE 0xC3
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#define IPMI_UNKNOWN_ERR_COMPLETION_CODE 0xff
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/*
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* Receive types for messages coming from the receive interface. This
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* is used for the receive in-kernel interface and in the receive
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* IOCTL.
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*
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* The "IPMI_RESPONSE_RESPONSE_TYPE" is a little strange sounding, but
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* it allows you to get the message results when you send a response
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* message.
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*/
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#define IPMI_RESPONSE_RECV_TYPE 1 /* A response to a command */
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#define IPMI_ASYNC_EVENT_RECV_TYPE 2 /* Something from the event queue */
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#define IPMI_CMD_RECV_TYPE 3 /* A command from somewhere else */
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#define IPMI_RESPONSE_RESPONSE_TYPE 4 /* The response for
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a sent response, giving any
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error status for sending the
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response. When you send a
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response message, this will
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be returned. */
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#define IPMI_OEM_RECV_TYPE 5 /* The response for OEM Channels */
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/* Note that async events and received commands do not have a completion
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code as the first byte of the incoming data, unlike a response. */
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/*
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* Modes for ipmi_set_maint_mode() and the userland IOCTL. The AUTO
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* setting is the default and means it will be set on certain
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* commands. Hard setting it on and off will override automatic
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* operation.
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*/
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#define IPMI_MAINTENANCE_MODE_AUTO 0
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#define IPMI_MAINTENANCE_MODE_OFF 1
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#define IPMI_MAINTENANCE_MODE_ON 2
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/*
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* The userland interface
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*/
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/*
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* The userland interface for the IPMI driver is a standard character
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* device, with each instance of an interface registered as a minor
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* number under the major character device.
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*
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* The read and write calls do not work, to get messages in and out
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* requires ioctl calls because of the complexity of the data. select
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* and poll do work, so you can wait for input using the file
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* descriptor, you just can use read to get it.
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*
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* In general, you send a command down to the interface and receive
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* responses back. You can use the msgid value to correlate commands
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* and responses, the driver will take care of figuring out which
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* incoming messages are for which command and find the proper msgid
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* value to report. You will only receive reponses for commands you
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* send. Asynchronous events, however, go to all open users, so you
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* must be ready to handle these (or ignore them if you don't care).
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*
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* The address type depends upon the channel type. When talking
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* directly to the BMC (IPMC_BMC_CHANNEL), the address is ignored
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* (IPMI_UNUSED_ADDR_TYPE). When talking to an IPMB channel, you must
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* supply a valid IPMB address with the addr_type set properly.
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*
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* When talking to normal channels, the driver takes care of the
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* details of formatting and sending messages on that channel. You do
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* not, for instance, have to format a send command, you just send
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* whatever command you want to the channel, the driver will create
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* the send command, automatically issue receive command and get even
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* commands, and pass those up to the proper user.
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*/
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/* The magic IOCTL value for this interface. */
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#define IPMI_IOC_MAGIC 'i'
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/* Messages sent to the interface are this format. */
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struct ipmi_req {
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unsigned char __user *addr; /* Address to send the message to. */
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unsigned int addr_len;
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long msgid; /* The sequence number for the message. This
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exact value will be reported back in the
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response to this request if it is a command.
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If it is a response, this will be used as
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the sequence value for the response. */
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struct ipmi_msg msg;
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};
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/*
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* Send a message to the interfaces. error values are:
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* - EFAULT - an address supplied was invalid.
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* - EINVAL - The address supplied was not valid, or the command
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* was not allowed.
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* - EMSGSIZE - The message to was too large.
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* - ENOMEM - Buffers could not be allocated for the command.
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*/
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#define IPMICTL_SEND_COMMAND _IOR(IPMI_IOC_MAGIC, 13, \
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struct ipmi_req)
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/* Messages sent to the interface with timing parameters are this
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format. */
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struct ipmi_req_settime {
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struct ipmi_req req;
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/* See ipmi_request_settime() above for details on these
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values. */
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int retries;
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unsigned int retry_time_ms;
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};
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/*
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* Send a message to the interfaces with timing parameters. error values
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* are:
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* - EFAULT - an address supplied was invalid.
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* - EINVAL - The address supplied was not valid, or the command
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* was not allowed.
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* - EMSGSIZE - The message to was too large.
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* - ENOMEM - Buffers could not be allocated for the command.
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*/
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#define IPMICTL_SEND_COMMAND_SETTIME _IOR(IPMI_IOC_MAGIC, 21, \
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struct ipmi_req_settime)
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/* Messages received from the interface are this format. */
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struct ipmi_recv {
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int recv_type; /* Is this a command, response or an
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asyncronous event. */
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unsigned char __user *addr; /* Address the message was from is put
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here. The caller must supply the
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memory. */
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unsigned int addr_len; /* The size of the address buffer.
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The caller supplies the full buffer
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length, this value is updated to
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the actual message length when the
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message is received. */
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long msgid; /* The sequence number specified in the request
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if this is a response. If this is a command,
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this will be the sequence number from the
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command. */
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struct ipmi_msg msg; /* The data field must point to a buffer.
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The data_size field must be set to the
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size of the message buffer. The
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caller supplies the full buffer
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length, this value is updated to the
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actual message length when the message
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is received. */
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};
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/*
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* Receive a message. error values:
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* - EAGAIN - no messages in the queue.
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* - EFAULT - an address supplied was invalid.
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* - EINVAL - The address supplied was not valid.
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* - EMSGSIZE - The message to was too large to fit into the message buffer,
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* the message will be left in the buffer. */
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#define IPMICTL_RECEIVE_MSG _IOWR(IPMI_IOC_MAGIC, 12, \
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struct ipmi_recv)
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/*
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* Like RECEIVE_MSG, but if the message won't fit in the buffer, it
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* will truncate the contents instead of leaving the data in the
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* buffer.
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*/
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#define IPMICTL_RECEIVE_MSG_TRUNC _IOWR(IPMI_IOC_MAGIC, 11, \
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struct ipmi_recv)
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/* Register to get commands from other entities on this interface. */
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struct ipmi_cmdspec {
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unsigned char netfn;
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unsigned char cmd;
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};
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/*
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* Register to receive a specific command. error values:
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* - EFAULT - an address supplied was invalid.
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* - EBUSY - The netfn/cmd supplied was already in use.
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* - ENOMEM - could not allocate memory for the entry.
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*/
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#define IPMICTL_REGISTER_FOR_CMD _IOR(IPMI_IOC_MAGIC, 14, \
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struct ipmi_cmdspec)
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/*
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* Unregister a registered command. error values:
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* - EFAULT - an address supplied was invalid.
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* - ENOENT - The netfn/cmd was not found registered for this user.
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*/
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#define IPMICTL_UNREGISTER_FOR_CMD _IOR(IPMI_IOC_MAGIC, 15, \
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struct ipmi_cmdspec)
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/*
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* Register to get commands from other entities on specific channels.
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* This way, you can only listen on specific channels, or have messages
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* from some channels go to one place and other channels to someplace
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* else. The chans field is a bitmask, (1 << channel) for each channel.
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* It may be IPMI_CHAN_ALL for all channels.
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*/
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struct ipmi_cmdspec_chans {
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unsigned int netfn;
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unsigned int cmd;
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unsigned int chans;
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};
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/*
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* Register to receive a specific command on specific channels. error values:
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* - EFAULT - an address supplied was invalid.
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* - EBUSY - One of the netfn/cmd/chans supplied was already in use.
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* - ENOMEM - could not allocate memory for the entry.
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*/
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#define IPMICTL_REGISTER_FOR_CMD_CHANS _IOR(IPMI_IOC_MAGIC, 28, \
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struct ipmi_cmdspec_chans)
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/*
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* Unregister some netfn/cmd/chans. error values:
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* - EFAULT - an address supplied was invalid.
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* - ENOENT - None of the netfn/cmd/chans were found registered for this user.
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*/
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#define IPMICTL_UNREGISTER_FOR_CMD_CHANS _IOR(IPMI_IOC_MAGIC, 29, \
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struct ipmi_cmdspec_chans)
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/*
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* Set whether this interface receives events. Note that the first
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* user registered for events will get all pending events for the
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* interface. error values:
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* - EFAULT - an address supplied was invalid.
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*/
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#define IPMICTL_SET_GETS_EVENTS_CMD _IOR(IPMI_IOC_MAGIC, 16, int)
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/*
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* Set and get the slave address and LUN that we will use for our
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* source messages. Note that this affects the interface, not just
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* this user, so it will affect all users of this interface. This is
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* so some initialization code can come in and do the OEM-specific
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* things it takes to determine your address (if not the BMC) and set
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* it for everyone else. You should probably leave the LUN alone.
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*/
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struct ipmi_channel_lun_address_set {
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unsigned short channel;
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unsigned char value;
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};
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#define IPMICTL_SET_MY_CHANNEL_ADDRESS_CMD \
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_IOR(IPMI_IOC_MAGIC, 24, struct ipmi_channel_lun_address_set)
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#define IPMICTL_GET_MY_CHANNEL_ADDRESS_CMD \
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_IOR(IPMI_IOC_MAGIC, 25, struct ipmi_channel_lun_address_set)
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#define IPMICTL_SET_MY_CHANNEL_LUN_CMD \
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_IOR(IPMI_IOC_MAGIC, 26, struct ipmi_channel_lun_address_set)
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#define IPMICTL_GET_MY_CHANNEL_LUN_CMD \
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_IOR(IPMI_IOC_MAGIC, 27, struct ipmi_channel_lun_address_set)
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/* Legacy interfaces, these only set IPMB 0. */
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#define IPMICTL_SET_MY_ADDRESS_CMD _IOR(IPMI_IOC_MAGIC, 17, unsigned int)
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#define IPMICTL_GET_MY_ADDRESS_CMD _IOR(IPMI_IOC_MAGIC, 18, unsigned int)
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#define IPMICTL_SET_MY_LUN_CMD _IOR(IPMI_IOC_MAGIC, 19, unsigned int)
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#define IPMICTL_GET_MY_LUN_CMD _IOR(IPMI_IOC_MAGIC, 20, unsigned int)
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/*
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* Get/set the default timing values for an interface. You shouldn't
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* generally mess with these.
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*/
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struct ipmi_timing_parms {
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int retries;
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unsigned int retry_time_ms;
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};
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#define IPMICTL_SET_TIMING_PARMS_CMD _IOR(IPMI_IOC_MAGIC, 22, \
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struct ipmi_timing_parms)
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#define IPMICTL_GET_TIMING_PARMS_CMD _IOR(IPMI_IOC_MAGIC, 23, \
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struct ipmi_timing_parms)
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/*
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* Set the maintenance mode. See ipmi_set_maintenance_mode() above
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* for a description of what this does.
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*/
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#define IPMICTL_GET_MAINTENANCE_MODE_CMD _IOR(IPMI_IOC_MAGIC, 30, int)
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#define IPMICTL_SET_MAINTENANCE_MODE_CMD _IOW(IPMI_IOC_MAGIC, 31, int)
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#endif /* _UAPI__LINUX_IPMI_H */
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