67b87e4429
Driver supports Serial ATA and ATAPI devices, Port Multipliers (including FIS-based switching), hardware command queues (31 command per port) and Native Command Queuing. This is probably the second on popularity, after AHCI, type of SATA2 controllers, that benefits from using CAM, because of hardware command queuing support. Approved by: re (kib)
123 lines
3.9 KiB
Groff
123 lines
3.9 KiB
Groff
.\" Copyright (c) 2009 Alexander Motin <mav@FreeBSD.org>
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.\" All rights reserved.
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.\"
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.\" Redistribution and use in source and binary forms, with or without
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.\" modification, are permitted provided that the following conditions
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.\" are met:
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.\" 1. Redistributions of source code must retain the above copyright
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.\" notice, this list of conditions and the following disclaimer.
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.\" 2. Redistributions in binary form must reproduce the above copyright
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.\" notice, this list of conditions and the following disclaimer in the
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.\" documentation and/or other materials provided with the distribution.
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.\" 3. The name of the author may not be used to endorse or promote products
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.\" derived from this software without specific prior written permission.
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.\"
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.\" THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
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.\" IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
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.\" OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
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.\" IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
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.\" INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
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.\" NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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.\" DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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.\" THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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.\" (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
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.\" THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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.\"
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.\" $FreeBSD$
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.\"
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.Dd July 18, 2009
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.Dt SIIS 4
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.Os
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.Sh NAME
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.Nm siis
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.Nd SiliconImage Serial ATA Host Controller driver
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.Sh SYNOPSIS
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To compile this driver into the kernel,
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place the following lines in your
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kernel configuration file:
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.Bd -ragged -offset indent
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.Cd "device pci"
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.Cd "device scbus"
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.Cd "device siis"
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.Ed
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.Pp
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Alternatively, to load the driver as a
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module at boot time, place the following line in
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.Xr loader.conf 5 :
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.Bd -literal -offset indent
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siis_load="YES"
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.Ed
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.Pp
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The following tunables are settable from the loader:
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.Bl -ohang
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.It Va hint.siis.X.msi
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controls Message Signaled Interrupts (MSI) usage by the specified controller.
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.It Va hint.siisch.X.pm_level
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controls SATA interface Power Management for specified channel,
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allowing some power to be saved at the cost of additional command
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latency.
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Possible values:
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.Bl -tag -compact
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.It 0
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interface Power Management is disabled (default);
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.It 1
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device is allowed to initiate PM state change, host is passive.
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.El
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Note that interface Power Management is not compatible with
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device presence detection.
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You will have to reset bus manually on device hot-plug.
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.It Va hint.siisch.X.sata_rev
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setting to nonzero value limits maximum SATA revision (speed).
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Values 1, 2 and 3 are respectively 1.5, 3 and 6Gbps.
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.El
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.Sh DESCRIPTION
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This driver provides the CAM subsystem native access to the
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.Tn SATA
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ports of controller.
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Each SATA port is represented to CAM as a separate bus with 16 targets.
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Most of the bus-management details are handled by the SATA-specific
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transport of CAM.
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Connected ATA disks are handled by the ATA protocol disk peripheral driver
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.Xr ada 4 .
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ATAPI devices are handled by the SCSI protocol peripheral drivers
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.Xr cd 4 ,
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.Xr da 4 ,
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.Xr sa 4 ,
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etc.
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.Pp
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Driver features include support for Serial ATA and ATAPI devices,
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Port Multipliers (including FIS-based switching), hardware command queues
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(31 command per port), Native Command Queuing, SATA interface Power Management,
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device hot-plug and Message Signaled Interrupts.
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.Pp
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Same hardware is also supported by atasiliconimage driver from
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.Xr ata 4
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subsystem. If both drivers are loaded at the same time, this one will be
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given precedence as the more functional of the two.
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.Sh HARDWARE
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The
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.Nm
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driver supports following controllers:
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.Bl -bullet -compact
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.It
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SiI3124
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.It
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SiI3132
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.It
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SiI3531
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.El
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.Sh SEE ALSO
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.Xr ada 4 ,
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.Xr cd 4 ,
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.Xr da 4 ,
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.Xr sa 4 ,
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.Xr scsi 4 ,
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.Xr ata 4
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.Sh HISTORY
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The
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.Nm
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driver first appeared in
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.Fx 8.0 .
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.Sh AUTHORS
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.An Alexander Motin Aq mav@FreeBSD.org .
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