157 lines
5.8 KiB
C
157 lines
5.8 KiB
C
/*
|
|
* ipmi_smi.h
|
|
*
|
|
* MontaVista IPMI system management interface
|
|
*
|
|
* Author: MontaVista Software, Inc.
|
|
* Corey Minyard <minyard@mvista.com>
|
|
* source@mvista.com
|
|
*
|
|
* Copyright 2002 MontaVista Software Inc.
|
|
*
|
|
* This program is free software; you can redistribute it and/or modify it
|
|
* under the terms of the GNU General Public License as published by the
|
|
* Free Software Foundation; either version 2 of the License, or (at your
|
|
* option) any later version.
|
|
*
|
|
*
|
|
* THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESS OR IMPLIED
|
|
* WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
|
|
* MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
|
|
* IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
|
|
* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
|
|
* BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
|
|
* OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
|
|
* ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR
|
|
* TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE
|
|
* USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
|
|
*
|
|
* You should have received a copy of the GNU General Public License along
|
|
* with this program; if not, write to the Free Software Foundation, Inc.,
|
|
* 675 Mass Ave, Cambridge, MA 02139, USA.
|
|
*/
|
|
|
|
#ifndef __LINUX_IPMI_SMI_H
|
|
#define __LINUX_IPMI_SMI_H
|
|
|
|
#include <linux/ipmi_msgdefs.h>
|
|
#include <linux/proc_fs.h>
|
|
#include <linux/module.h>
|
|
|
|
/* This files describes the interface for IPMI system management interface
|
|
drivers to bind into the IPMI message handler. */
|
|
|
|
/* Structure for the low-level drivers. */
|
|
typedef struct ipmi_smi *ipmi_smi_t;
|
|
|
|
/*
|
|
* Messages to/from the lower layer. The smi interface will take one
|
|
* of these to send. After the send has occurred and a response has
|
|
* been received, it will report this same data structure back up to
|
|
* the upper layer. If an error occurs, it should fill in the
|
|
* response with an error code in the completion code location. When
|
|
* asynchronous data is received, one of these is allocated, the
|
|
* data_size is set to zero and the response holds the data from the
|
|
* get message or get event command that the interface initiated.
|
|
* Note that it is the interfaces responsibility to detect
|
|
* asynchronous data and messages and request them from the
|
|
* interface.
|
|
*/
|
|
struct ipmi_smi_msg
|
|
{
|
|
struct list_head link;
|
|
|
|
long msgid;
|
|
void *user_data;
|
|
|
|
int data_size;
|
|
unsigned char data[IPMI_MAX_MSG_LENGTH];
|
|
|
|
int rsp_size;
|
|
unsigned char rsp[IPMI_MAX_MSG_LENGTH];
|
|
|
|
/* Will be called when the system is done with the message
|
|
(presumably to free it). */
|
|
void (*done)(struct ipmi_smi_msg *msg);
|
|
};
|
|
|
|
struct ipmi_smi_handlers
|
|
{
|
|
struct module *owner;
|
|
|
|
/* Called to enqueue an SMI message to be sent. This
|
|
operation is not allowed to fail. If an error occurs, it
|
|
should report back the error in a received message. It may
|
|
do this in the current call context, since no write locks
|
|
are held when this is run. If the priority is > 0, the
|
|
message will go into a high-priority queue and be sent
|
|
first. Otherwise, it goes into a normal-priority queue. */
|
|
void (*sender)(void *send_info,
|
|
struct ipmi_smi_msg *msg,
|
|
int priority);
|
|
|
|
/* Called by the upper layer to request that we try to get
|
|
events from the BMC we are attached to. */
|
|
void (*request_events)(void *send_info);
|
|
|
|
/* Called when the interface should go into "run to
|
|
completion" mode. If this call sets the value to true, the
|
|
interface should make sure that all messages are flushed
|
|
out and that none are pending, and any new requests are run
|
|
to completion immediately. */
|
|
void (*set_run_to_completion)(void *send_info, int run_to_completion);
|
|
|
|
/* Called to poll for work to do. This is so upper layers can
|
|
poll for operations during things like crash dumps. */
|
|
void (*poll)(void *send_info);
|
|
|
|
/* Tell the handler that we are using it/not using it. The
|
|
message handler get the modules that this handler belongs
|
|
to; this function lets the SMI claim any modules that it
|
|
uses. These may be NULL if this is not required. */
|
|
int (*inc_usecount)(void *send_info);
|
|
void (*dec_usecount)(void *send_info);
|
|
};
|
|
|
|
/* Add a low-level interface to the IPMI driver. Note that if the
|
|
interface doesn't know its slave address, it should pass in zero. */
|
|
int ipmi_register_smi(struct ipmi_smi_handlers *handlers,
|
|
void *send_info,
|
|
unsigned char version_major,
|
|
unsigned char version_minor,
|
|
unsigned char slave_addr,
|
|
ipmi_smi_t *intf);
|
|
|
|
/*
|
|
* Remove a low-level interface from the IPMI driver. This will
|
|
* return an error if the interface is still in use by a user.
|
|
*/
|
|
int ipmi_unregister_smi(ipmi_smi_t intf);
|
|
|
|
/*
|
|
* The lower layer reports received messages through this interface.
|
|
* The data_size should be zero if this is an asyncronous message. If
|
|
* the lower layer gets an error sending a message, it should format
|
|
* an error response in the message response.
|
|
*/
|
|
void ipmi_smi_msg_received(ipmi_smi_t intf,
|
|
struct ipmi_smi_msg *msg);
|
|
|
|
/* The lower layer received a watchdog pre-timeout on interface. */
|
|
void ipmi_smi_watchdog_pretimeout(ipmi_smi_t intf);
|
|
|
|
struct ipmi_smi_msg *ipmi_alloc_smi_msg(void);
|
|
static inline void ipmi_free_smi_msg(struct ipmi_smi_msg *msg)
|
|
{
|
|
msg->done(msg);
|
|
}
|
|
|
|
/* Allow the lower layer to add things to the proc filesystem
|
|
directory for this interface. Note that the entry will
|
|
automatically be dstroyed when the interface is destroyed. */
|
|
int ipmi_smi_add_proc_entry(ipmi_smi_t smi, char *name,
|
|
read_proc_t *read_proc, write_proc_t *write_proc,
|
|
void *data, struct module *owner);
|
|
|
|
#endif /* __LINUX_IPMI_SMI_H */
|