1.\" Copyright (c) 2006 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.\" 27.Dd April 3, 2006 28.Dt MFI 4 29.Os 30.Sh NAME 31.Nm mfi 32.Nd "LSI MegaRAID SAS driver" 33.Sh SYNOPSIS 34To compile this driver into the kernel, 35place the following lines in your 36kernel configuration file: 37.Bd -ragged -offset indent 38.Cd "device pci" 39.Cd "device mfi" 40.Ed 41.Pp 42Alternatively, to load the driver as a 43module at boot time, place the following line in 44.Xr loader.conf 5 : 45.Bd -literal -offset indent 46mfi_load="YES" 47.Ed 48.Sh DESCRIPTION 49This driver is for LSI's next generation PCI Express SAS RAID controllers. 50Access to RAID arrays (logical disks) from this driver is provided via 51.Pa /dev/mfid? 52device nodes. 53A simple management interface is also provided on a per-controller basis via 54the 55.Pa /dev/mfi? 56device node. 57.Pp 58The 59.Nm 60name is derived from the phrase "MegaRAID Firmware Interface", which is 61substantially different than the old "MegaRAID" interface and thus requires 62a new driver. 63Older SCSI and SATA MegaRAID cards are supported by 64.Xr amr 4 65and will not work with this driver. 66.Pp 67Two sysctls are provided to tune the 68.Nm 69driver's behavior when a request is made to remove a mounted volume. 70By default the driver will disallow any requests to remove a mounted volume. 71If the sysctl 72.Va dev.mfi.%d.delete_busy_volumes 73is set to 1, 74then the driver will allow mounted volumes to be removed. 75.Sh HARDWARE 76The 77.Nm 78driver supports the following hardware: 79.Pp 80.Bl -bullet -compact 81.It 82LSI MegaRAID SAS 8408E 83.It 84LSI MegaRAID SAS 8480E 85.It 86Dell PERC5/i 87.El 88.Sh FILES 89.Bl -tag -width ".Pa /dev/mfid?" -compact 90.It Pa /dev/mfid? 91array/logical disk interface 92.It Pa /dev/mfi? 93management interface 94.El 95.Sh DIAGNOSTICS 96.Bl -diag 97.It "mfid%d: Unable to delete busy device" 98An attempt was made to remove a mounted volume. 99.El 100.Sh SEE ALSO 101.Xr amr 4 , 102.Xr pci 4 103.Sh HISTORY 104The 105.Nm 106driver first appeared in 107.Fx 6.1 . 108.Sh AUTHORS 109The 110.Nm 111driver and this manual page were written by 112.An Scott Long Aq scottl@FreeBSD.org . 113.Sh BUGS 114The driver does not support big-endian architectures at this time. 115