134 lines
4.0 KiB
Groff
134 lines
4.0 KiB
Groff
.\" Copyright (c) 2000
|
|
.\" Matthew Jacob <mjacob@freebsd.org>. All rights reserved.
|
|
.\"
|
|
.\" Redistribution and use in source and binary forms, with or without
|
|
.\" modification, are permitted provided that the following conditions
|
|
.\" are met:
|
|
.\" 1. Redistributions of source code must retain the above copyright
|
|
.\" notice, this list of conditions and the following disclaimer.
|
|
.\"
|
|
.\" 2. Redistributions in binary form must reproduce the above copyright
|
|
.\" notice, this list of conditions and the following disclaimer in the
|
|
.\" documentation and/or other materials provided with the distribution.
|
|
.\"
|
|
.\" THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``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 OR CONTRIBUTORS 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.
|
|
.\"
|
|
.\" $FreeBSD$
|
|
.\"
|
|
.Dd January 29, 2000
|
|
.Dt SES 4
|
|
.Os FreeBSD
|
|
.Sh NAME
|
|
.Nm ses
|
|
.Nd SCSI Environmental Services Driver
|
|
.Sh SYNOPSIS
|
|
.Cd device ses
|
|
.Sh DESCRIPTION
|
|
The
|
|
.Nm ses
|
|
driver provides support for all
|
|
.Tn SCSI
|
|
devices of the environmental services class that are attached to the system
|
|
through a supported
|
|
.Tn SCSI
|
|
Host Adapter, as well as emulated support for SAF-TE (SCSI Accessible
|
|
Fault Tolerant Enclosures).
|
|
The environmental services class generally are enclosure devices that
|
|
provide environmental information such as number of power supplies (and
|
|
state), temperature, device slots, and so on.
|
|
.Pp
|
|
A
|
|
.Tn SCSI
|
|
Host
|
|
adapter must also be separately configured into the system
|
|
before a
|
|
.Tn SCSI
|
|
SCSI Environmental Services device can be configured.
|
|
.Sh KERNEL CONFIGURATION
|
|
It is only necessary to explicitly configure one
|
|
.Nm ses
|
|
device; data structures are dynamically allocated as devices are found
|
|
on the
|
|
.Tn SCSI
|
|
bus.
|
|
.Pp
|
|
A separate option,
|
|
.B SES_ENABLE_PASSTHROUGH ,
|
|
may be specified to allow the
|
|
.Nm
|
|
driver to perform functions on devices of other classes that claim to
|
|
also support
|
|
.B SES
|
|
functionality.
|
|
.Sh IOCTLS
|
|
The following
|
|
.Xr ioctl 2
|
|
calls apply to
|
|
.B SES
|
|
devices.
|
|
They are defined in the header file
|
|
.Aq Pa cam/scsi/scsi_ses.h
|
|
(\fIq.v.\fR).
|
|
.Pp
|
|
.Bl -tag -width SESIOC_GETENCSTAT
|
|
.It Dv SESIOC_GETNOBJ
|
|
Used to find out how many
|
|
.B SES
|
|
objects are driven by this particular device instance.
|
|
.It Dv SESIOC_GETOBJMAP
|
|
Read, from the kernel, an array of SES objects which contains
|
|
the object identifier, which subenclosure it is in, and the
|
|
.B SES
|
|
type of the object.
|
|
.It Dv SESIOC_GETENCSTAT
|
|
Get the overall enclosure status.
|
|
.It Dv SESIOC_SETENCSTAT
|
|
Set the overall enclosure status.
|
|
.It Dv SESIOC_GETOBJSTAT
|
|
Get the status of a particular object.
|
|
.It Dv SESIOC_SETOBJSTAT
|
|
Set the status of a particular object.
|
|
.It Dv SESIOC_GETTEXT
|
|
Get the associated help text for an object (not yet implemented).
|
|
.B SES
|
|
devices often have descriptive text for an object which can tell
|
|
you things like location (e.g, "left power supply").
|
|
.It Dv SESIOC_INIT
|
|
Initialize the enclosure.
|
|
.Sh EXAMPLE USAGE
|
|
The files contained in
|
|
.Aq Pa usr/share/examples/ses
|
|
show simple mechanisms for how to use these interfaces, as well as a
|
|
very stupid simple monitoring daemon.
|
|
.Sh FILES
|
|
.Bl -tag -width /dev/rsdXXXXX -compact
|
|
.It Pa /dev/ses Ns Ar N
|
|
The
|
|
.Em Nth
|
|
.Nm SES
|
|
device.
|
|
.Sh DIAGNOSTICS
|
|
When the kernel is configured with
|
|
.Tn DEBUG
|
|
enabled, the first open to an SES device will spit out overall enclosure
|
|
parameters to the console.
|
|
.Sh HISTORY
|
|
The
|
|
.Nm
|
|
driver was written for the
|
|
.Tn CAM
|
|
.Tn SCSI
|
|
subsystem by Matthew Jacob.
|
|
This is a functional equivalent of a similar
|
|
driver available in Solaris, Release 7.
|