1.\" Copyright (c) 2009 Alexander Motin <mav@FreeBSD.org> 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.\" 3. The name of the author may not be used to endorse or promote products 13.\" derived from this software without specific prior written permission. 14.\" 15.\" THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR 16.\" IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES 17.\" OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. 18.\" IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, 19.\" INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT 20.\" NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 21.\" DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 22.\" THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 23.\" (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF 24.\" THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 25.\" 26.\" $FreeBSD$ 27.\" 28.Dd April 27, 2010 29.Dt MVS 4 30.Os 31.Sh NAME 32.Nm mvs 33.Nd Marvell Serial ATA Host Controller driver 34.Sh SYNOPSIS 35To compile this driver into the kernel, 36place the following lines in your 37kernel configuration file: 38.Bd -ragged -offset indent 39.Cd "device pci" 40.Cd "device scbus" 41.Cd "device mvs" 42.Ed 43.Pp 44Alternatively, to load the driver as a 45module at boot time, place the following line in 46.Xr loader.conf 5 : 47.Bd -literal -offset indent 48mvs_load="YES" 49.Ed 50.Pp 51The following tunables are settable from the 52.Xr loader 8 : 53.Bl -ohang 54.It Va hint.mvs. Ns Ar X Ns Va .msi 55controls Message Signaled Interrupts (MSI) usage by the specified controller. 56.It Va hint.mvs. Ns Ar X Ns Va .ccc 57controls Command Completion Coalescing (CCC) usage by the specified controller. 58Non-zero value enables CCC and defines maximum time (in us), request can wait 59for interrupt. 60CCC reduces number of context switches on systems with many parallel requests, 61but it can decrease disk performance on some workloads due to additional 62command latency. 63.It Va hint.mvs. Ns Ar X Ns Va .cccc 64defines number of completed commands for CCC, which trigger interrupt without 65waiting for specified coalescing timeout. 66.It Va hint.mvs. Ns Ar X Ns Va .pm_level 67controls SATA interface Power Management for the specified channel, 68allowing some power to be saved at the cost of additional command 69latency. 70Possible values: 71.Bl -tag -compact 72.It 0 73interface Power Management is disabled (default); 74.It 1 75device is allowed to initiate PM state change, host is passive; 76.It 4 77driver initiates PARTIAL PM state transition 1ms after port becomes idle; 78.It 5 79driver initiates SLUMBER PM state transition 125ms after port becomes idle. 80.El 81.Pp 82Note that interface Power Management is not compatible with 83device presence detection. 84A manual bus reset is needed on device hot-plug. 85.It Va hint.mvs. Ns Ar X Ns Va .sata_rev 86setting to nonzero value limits maximum SATA revision (speed). 87Values 1, 2 and 3 are respectively 1.5, 3 and 6Gbps. 88.El 89.Sh DESCRIPTION 90This driver provides the 91.Xr CAM 4 92subsystem with native access to the 93.Tn SATA 94ports of several generations (Gen-I/II/IIe) of Marvell SATA controllers. 95Each SATA port found is represented to CAM as a separate bus with one 96target, or, if HBA supports Port Multipliers (Gen-II/IIe), 16 targets. 97Most of the bus-management details are handled by the SATA-specific 98transport of CAM. 99Connected ATA disks are handled by the ATA protocol disk peripheral driver 100.Xr ada 4 . 101ATAPI devices are handled by the SCSI protocol peripheral drivers 102.Xr cd 4 , 103.Xr da 4 , 104.Xr sa 4 , 105etc. 106.Pp 107Driver features include support for Serial ATA and ATAPI devices, 108Port Multipliers (including FIS-based switching, when supported), 109hardware command queues (up to 31 command per port), 110Native Command Queuing, SATA interface Power Management, device hot-plug 111and Message Signaled Interrupts. 112.Pp 113Same hardware is also supported by atamarvell and ataadaptec drivers from 114.Xr ata 4 115subsystem. 116If both drivers are loaded at the same time, this one will be 117given precedence as the more functional of the two. 118.Sh HARDWARE 119The 120.Nm 121driver supports the following controllers: 122.Bl -tag -compact 123.It Gen-I (SATA 1.5Gbps): 124.Bl -bullet -compact 125.It 12688SX5040 127.It 12888SX5041 129.It 13088SX5080 131.It 13288SX5081 133.El 134.It Gen-II (SATA 3Gbps, NCQ, PMP): 135.Bl -bullet -compact 136.It 13788SX6040 138.It 13988SX6041 (including Adaptec 1420SA) 140.It 14188SX6080 142.It 14388SX6081 144.El 145.It Gen-IIe (SATA 3Gbps, NCQ, PMP with FBS): 146.Bl -bullet -compact 147.It 14888SX6042 149.It 15088SX7042 (including Adaptec 1430SA) 151.It 15288F5182 SoC 153.It 15488F6281 SoC 155.It 156MV78100 SoC 157.El 158.El 159Note, that this hardware supports command queueing and FIS-based switching 160only for ATA DMA commands. ATAPI and non-DMA ATA commands executed one by one 161for each port. 162.Pp 163.Sh SEE ALSO 164.Xr ada 4 , 165.Xr ata 4 , 166.Xr cam 4 , 167.Xr cd 4 , 168.Xr da 4 , 169.Xr sa 4 170.Sh HISTORY 171The 172.Nm 173driver first appeared in 174.Fx 8.1 . 175.Sh AUTHORS 176.An Alexander Motin Aq mav@FreeBSD.org . 177