1.\" Copyright (c) 2000 2.\" Matthew Jacob <mjacob@FreeBSD.org>. All rights reserved. 3.\" 4.\" Redistribution and use in source and binary forms, with or without 5.\" modification, are permitted provided that the following conditions 6.\" are met: 7.\" 1. Redistributions of source code must retain the above copyright 8.\" notice, this list of conditions and the following disclaimer. 9.\" 10.\" 2. Redistributions in binary form must reproduce the above copyright 11.\" notice, this list of conditions and the following disclaimer in the 12.\" documentation and/or other materials provided with the distribution. 13.\" 14.\" THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND 15.\" ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 16.\" IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 17.\" ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE 18.\" FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 19.\" DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 20.\" OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 21.\" HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 22.\" LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 23.\" OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 24.\" SUCH DAMAGE. 25.\" 26.\" $FreeBSD: src/share/man/man4/ses.4,v 1.2.2.6 2001/08/17 13:08:39 ru Exp $ 27.\" 28.Dd January 29, 2000 29.Dt SES 4 30.Os 31.Sh NAME 32.Nm ses 33.Nd SCSI Environmental Services driver 34.Sh SYNOPSIS 35.Cd device ses 36.Sh DESCRIPTION 37The 38.Nm 39driver provides support for all 40.Tn SCSI 41devices of the environmental services class that are attached to the system 42through a supported 43.Tn SCSI 44Host Adapter, as well as emulated support for SAF-TE (SCSI Accessible 45Fault Tolerant Enclosures). 46The environmental services class generally are enclosure devices that 47provide environmental information such as number of power supplies (and 48state), temperature, device slots, and so on. 49.Pp 50A 51.Tn SCSI 52Host 53adapter must also be separately configured into the system 54before a 55.Tn SCSI 56Environmental Services device can be configured. 57.Sh KERNEL CONFIGURATION 58It is only necessary to explicitly configure one 59.Nm 60device; data structures are dynamically allocated as devices are found 61on the 62.Tn SCSI 63bus. 64.Pp 65A separate option, 66.Va SES_ENABLE_PASSTHROUGH , 67may be specified to allow the 68.Nm 69driver to perform functions on devices of other classes that claim to 70also support 71.Nm 72functionality. 73.Sh IOCTLS 74The following 75.Xr ioctl 2 76calls apply to 77.Nm 78devices. 79They are defined in the header file 80.Aq Pa cam/scsi/scsi_ses.h 81(\fIq.v.\fR). 82.Pp 83.Bl -tag -width SESIOC_GETENCSTAT 84.It Dv SESIOC_GETNOBJ 85Used to find out how many 86.Nm 87objects are driven by this particular device instance. 88.It Dv SESIOC_GETOBJMAP 89Read, from the kernel, an array of SES objects which contains 90the object identifier, which subenclosure it is in, and the 91.Nm 92type of the object. 93.It Dv SESIOC_GETENCSTAT 94Get the overall enclosure status. 95.It Dv SESIOC_SETENCSTAT 96Set the overall enclosure status. 97.It Dv SESIOC_GETOBJSTAT 98Get the status of a particular object. 99.It Dv SESIOC_SETOBJSTAT 100Set the status of a particular object. 101.It Dv SESIOC_GETTEXT 102Get the associated help text for an object (not yet implemented). 103.Nm 104devices often have descriptive text for an object which can tell 105you things like location (e.g, "left power supply"). 106.It Dv SESIOC_INIT 107Initialize the enclosure. 108.El 109.Sh EXAMPLE USAGE 110The files contained in 111.Aq Pa usr/share/examples/ses 112show simple mechanisms for how to use these interfaces, as well as a 113very stupid simple monitoring daemon. 114.Sh FILES 115.Bl -tag -width /dev/rsdXXXXX -compact 116.It Pa /dev/ses Ns Ar N 117The 118.Em Nth 119.Nm SES 120device. 121.El 122.Sh DIAGNOSTICS 123When the kernel is configured with 124.Tn DEBUG 125enabled, the first open to an SES device will spit out overall enclosure 126parameters to the console. 127.Sh HISTORY 128The 129.Nm 130driver was written for the 131.Tn CAM 132.Tn SCSI 133subsystem by Matthew Jacob. 134This is a functional equivalent of a similar 135driver available in Solaris, Release 7. 136