1.\" Copyright (c) 2000 Scott Long 2.\" 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.\" 2. Redistributions in binary form must reproduce the above copyright 10.\" notice, this list of conditions and the following disclaimer in the 11.\" documentation and/or other materials provided with the distribution. 12.\" 13.\" THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND 14.\" ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 15.\" IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 16.\" ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE 17.\" FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 18.\" DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 19.\" OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 20.\" HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 21.\" LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 22.\" OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 23.\" SUCH DAMAGE. 24.\" 25.\" $FreeBSD$ 26.Dd December 15, 2004 27.Dt AAC 4 28.Os 29.Sh NAME 30.Nm aac 31.Nd Adaptec AdvancedRAID Controller driver 32.Sh SYNOPSIS 33.Cd options AAC_DEBUG=N 34.Cd device pci 35.Cd device aac 36.Cd device aacp 37.Sh DESCRIPTION 38The 39.Nm 40driver provides support for the Adaptec AAC family of SCSI Ultra2, Ultra160, 41and Ultra320, and SATA RAID controllers. 42.Pp 43Access to RAID containers is available via the 44.Pa /dev/aacd? 45device nodes. 46The 47.Nm aacp 48device enables the SCSI pass-thru interface and allows devices connected 49to the card such as cdroms to be available via the CAM 50.Xr scsi 4 51subsystem. 52Note that not all cards allow this interface to be enabled. 53.Pp 54The 55.Pa /dev/aac? 56device nodes provide access to the management interface of the controller. 57One node exists per installed card. 58The aliases 59.Pa /dev/afa? 60and 61.Pa /dev/hpn? 62exist for compatibilty with the Dell and HP versions of management tools, 63respectively. 64If the kernel is compiled with the 65.Dv COMPAT_LINUX 66option, or the 67.Pa aac_linux.ko 68and 69.Pa linux.ko 70modules are loaded, the 71Linux-compatible 72.Xr ioctl 2 73interface for the management device will be enabled and will allow 74Linux-based management applications to control the card. 75.Ss Tuning 76The read-only sysctl 77.Va hw.aac.iosize_max 78defaults to 65536 and may be set at boot time to another value via 79.Xr loader 8 . 80This value determines the maximum data transfer size allowed 81to/from an array. 82Setting it higher will result in better performance, 83especially for large sequential access patterns. 84.Em Beware : 85internal limitations 86of the card limit this value to 64K for arrays with many members. 87While it may be safe to raise this value, this is done 88.Em at the operator's own risk . 89Note also that 90performance peaks at a value of 96K, 91and drops off dramatically at 128K, 92due to other limitations of the card. 93.Sh HARDWARE 94Controllers supported by the 95.Nm 96driver include: 97.Pp 98.Bl -bullet -compact 99.It 100Adaptec AAC-364 101.It 102Adaptec SCSI RAID 2120S 103.It 104Adaptec SCSI RAID 2130S 105.It 106Adaptec SCSI RAID 2200S 107.It 108Adaptec SCSI RAID 2230SLP 109.It 110Adaptec SCSI RAID 2410SA 111.It 112Adaptec SCSI RAID 2810SA 113.It 114Adaptec SCSI RAID 21610SA 115.It 116Adaptec SCSI RAID 5400S 117.It 118Dell CERC SATA RAID 2 119.It 120Dell PERC 2/Si 121.It 122Dell PERC 2/QC 123.It 124Dell PERC 3/Si 125.It 126Dell PERC 3/Di 127.It 128Dell PERC 320/DC 129.It 130HP NetRAID 4M 131.El 132.Sh FILES 133.Bl -tag -width /boot/kernel/aac.ko -compact 134.It Pa /dev/aac? 135aac management interface 136.It Pa /dev/aacd? 137disk/container interface 138.It Pa /boot/kernel/aac.ko 139aac loadable module 140.El 141.Sh DIAGNOSTICS 142Compiling with 143.Dv AAC_DEBUG 144set to a number between 0 and 3 145will enable increasingly verbose debug messages. 146.Pp 147The adapter can send status and alert messages asynchronously 148to the driver. 149These messages are printed on the system console, 150and are also queued for retrieval by a management application. 151.Sh SEE ALSO 152.Xr kld 4 , 153.Xr linux 4 , 154.Xr scsi 4 , 155.Xr kldload 8 , 156.Xr loader 8 , 157.Xr sysctl 8 158.Sh HISTORY 159The 160.Nm 161driver first appeared in 162.Fx 4.3 . 163.Sh AUTHORS 164.An Mike Smith 165.Aq msmith@FreeBSD.org 166.An Scott Long 167.Aq scottl@FreeBSD.org 168.Sh BUGS 169This driver is not compatible with Dell controllers that have version 1.x 170firmware. 171The firmware version is the same as the kernel version printed in the BIOS 172POST and driver attach messages. 173.Pp 174The controller is not actually paused on suspend/resume. 175.Pp 176