179 lines
5.3 KiB
Groff
179 lines
5.3 KiB
Groff
.\" Copyright (c) 2009 Alexander Motin <mav@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 March 3, 2013
|
|
.Dt MVS 4
|
|
.Os
|
|
.Sh NAME
|
|
.Nm mvs
|
|
.Nd Marvell Serial ATA Host Controller driver
|
|
.Sh SYNOPSIS
|
|
To compile this driver into the kernel,
|
|
place the following lines in your
|
|
kernel configuration file:
|
|
.Bd -ragged -offset indent
|
|
.Cd "device pci"
|
|
.Cd "device scbus"
|
|
.Cd "device mvs"
|
|
.Ed
|
|
.Pp
|
|
Alternatively, to load the driver as a
|
|
module at boot time, place the following line in
|
|
.Xr loader.conf 5 :
|
|
.Bd -literal -offset indent
|
|
mvs_load="YES"
|
|
.Ed
|
|
.Pp
|
|
The following tunables are settable from the
|
|
.Xr loader 8 :
|
|
.Bl -ohang
|
|
.It Va hint.mvs. Ns Ar X Ns Va .msi
|
|
controls Message Signaled Interrupts (MSI) usage by the specified controller.
|
|
.It Va hint.mvs. Ns Ar X Ns Va .ccc
|
|
controls Command Completion Coalescing (CCC) usage by the specified controller.
|
|
Non-zero value enables CCC and defines maximum time (in us), request can wait
|
|
for interrupt.
|
|
CCC reduces number of context switches on systems with many parallel requests,
|
|
but it can decrease disk performance on some workloads due to additional
|
|
command latency.
|
|
.It Va hint.mvs. Ns Ar X Ns Va .cccc
|
|
defines number of completed commands for CCC, which trigger interrupt without
|
|
waiting for specified coalescing timeout.
|
|
.It Va hint.mvsch. Ns Ar X Ns Va .pm_level
|
|
controls SATA interface Power Management for the specified channel,
|
|
allowing some power to be saved at the cost of additional command
|
|
latency.
|
|
Possible values:
|
|
.Pp
|
|
.Bl -tag -width 4n -offset indent -compact
|
|
.It 0
|
|
interface Power Management is disabled (default);
|
|
.It 1
|
|
device is allowed to initiate PM state change, host is passive;
|
|
.It 4
|
|
driver initiates PARTIAL PM state transition 1ms after port becomes idle;
|
|
.It 5
|
|
driver initiates SLUMBER PM state transition 125ms after port becomes idle.
|
|
.El
|
|
.Pp
|
|
Note that interface Power Management is not compatible with
|
|
device presence detection.
|
|
A manual bus reset is needed on device hot-plug.
|
|
.It Va hint.mvsch. Ns Ar X Ns Va .sata_rev
|
|
setting to nonzero value limits maximum SATA revision (speed).
|
|
Values 1, 2 and 3 are respectively 1.5, 3 and 6Gbps.
|
|
.El
|
|
.Sh DESCRIPTION
|
|
This driver provides the
|
|
.Xr CAM 4
|
|
subsystem with native access to the
|
|
.Tn SATA
|
|
ports of several generations (Gen-I/II/IIe) of Marvell SATA controllers.
|
|
Each SATA port found is represented to CAM as a separate bus with one
|
|
target, or, if HBA supports Port Multipliers (Gen-II/IIe), 16 targets.
|
|
Most of the bus-management details are handled by the SATA-specific
|
|
transport of CAM.
|
|
Connected ATA disks are handled by the ATA protocol disk peripheral driver
|
|
.Xr ada 4 .
|
|
ATAPI devices are handled by the SCSI protocol peripheral drivers
|
|
.Xr cd 4 ,
|
|
.Xr da 4 ,
|
|
.Xr sa 4 ,
|
|
etc.
|
|
.Pp
|
|
Driver features include support for Serial ATA and ATAPI devices,
|
|
Port Multipliers (including FIS-based switching, when supported),
|
|
hardware command queues (up to 31 command per port),
|
|
Native Command Queuing, SATA interface Power Management, device hot-plug
|
|
and Message Signaled Interrupts.
|
|
.Pp
|
|
The same hardware is also supported by the atamarvell and ataadaptec
|
|
drivers from the
|
|
.Xr ata 4
|
|
subsystem.
|
|
If both drivers are loaded at the same time, this one will be
|
|
given precedence as the more functional of the two.
|
|
.Sh HARDWARE
|
|
The
|
|
.Nm
|
|
driver supports the following controllers:
|
|
.Pp
|
|
Gen-I (SATA 1.5Gbps):
|
|
.Bl -bullet -compact -offset "xxxxxx"
|
|
.It
|
|
88SX5040
|
|
.It
|
|
88SX5041
|
|
.It
|
|
88SX5080
|
|
.It
|
|
88SX5081
|
|
.El
|
|
.Pp
|
|
Gen-II (SATA 3Gbps, NCQ, PMP):
|
|
.Bl -bullet -compact -offset "xxxxxx"
|
|
.It
|
|
88SX6040
|
|
.It
|
|
88SX6041 (including Adaptec 1420SA)
|
|
.It
|
|
88SX6080
|
|
.It
|
|
88SX6081
|
|
.El
|
|
.Pp
|
|
Gen-IIe (SATA 3Gbps, NCQ, PMP with FBS):
|
|
.Bl -bullet -compact -offset "xxxxxx"
|
|
.It
|
|
88SX6042
|
|
.It
|
|
88SX7042 (including Adaptec 1430SA)
|
|
.It
|
|
88F5182 SoC
|
|
.It
|
|
88F6281 SoC
|
|
.It
|
|
MV78100 SoC
|
|
.El
|
|
.Pp
|
|
Note, that this hardware supports command queueing and FIS-based switching
|
|
only for ATA DMA commands.
|
|
ATAPI and non-DMA ATA commands executed one by one for each port.
|
|
.Sh SEE ALSO
|
|
.Xr ada 4 ,
|
|
.Xr ata 4 ,
|
|
.Xr cam 4 ,
|
|
.Xr cd 4 ,
|
|
.Xr da 4 ,
|
|
.Xr sa 4
|
|
.Sh HISTORY
|
|
The
|
|
.Nm
|
|
driver first appeared in
|
|
.Fx 8.1 .
|
|
.Sh AUTHORS
|
|
.An Alexander Motin Aq mav@FreeBSD.org
|