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.\" 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 March 3, 2013 28.Dt MVS 4 29.Os 30.Sh NAME 31.Nm mvs 32.Nd Marvell Serial ATA Host Controller 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 scbus" 40.Cd "device mvs" 41.Ed 42.Pp 43Alternatively, to load the driver as a 44module at boot time, place the following line in 45.Xr loader.conf 5 : 46.Bd -literal -offset indent 47mvs_load="YES" 48.Ed 49.Pp 50The following tunables are settable from the 51.Xr loader 8 : 52.Bl -ohang 53.It Va hint.mvs. Ns Ar X Ns Va .msi 54controls Message Signaled Interrupts (MSI) usage by the specified controller. 55.It Va hint.mvs. Ns Ar X Ns Va .ccc 56controls Command Completion Coalescing (CCC) usage by the specified controller. 57Non-zero value enables CCC and defines maximum time (in us), request can wait 58for interrupt. 59CCC reduces number of context switches on systems with many parallel requests, 60but it can decrease disk performance on some workloads due to additional 61command latency. 62.It Va hint.mvs. Ns Ar X Ns Va .cccc 63defines number of completed commands for CCC, which trigger interrupt without 64waiting for specified coalescing timeout. 65.It Va hint.mvsch. Ns Ar X Ns Va .pm_level 66controls SATA interface Power Management for the specified channel, 67allowing some power to be saved at the cost of additional command 68latency. 69Possible values: 70.Pp 71.Bl -tag -width 4n -offset indent -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.mvsch. 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 113The same hardware is also supported by the atamarvell and ataadaptec 114drivers from the 115.Xr ata 4 116subsystem. 117If both drivers are loaded at the same time, this one will be 118given precedence as the more functional of the two. 119.Sh HARDWARE 120The 121.Nm 122driver supports the following controllers: 123.Pp 124Gen-I (SATA 1.5Gbps): 125.Bl -bullet -compact -offset "xxxxxx" 126.It 12788SX5040 128.It 12988SX5041 130.It 13188SX5080 132.It 13388SX5081 134.El 135.Pp 136Gen-II (SATA 3Gbps, NCQ, PMP): 137.Bl -bullet -compact -offset "xxxxxx" 138.It 13988SX6040 140.It 14188SX6041 (including Adaptec 1420SA) 142.It 14388SX6080 144.It 14588SX6081 146.El 147.Pp 148Gen-IIe (SATA 3Gbps, NCQ, PMP with FBS): 149.Bl -bullet -compact -offset "xxxxxx" 150.It 15188SX6042 152.It 15388SX7042 (including Adaptec 1430SA) 154.It 15588F5182 SoC 156.It 15788F6281 SoC 158.It 159MV78100 SoC 160.El 161.Pp 162Note, that this hardware supports command queueing and FIS-based switching 163only for ATA DMA commands. 164ATAPI and non-DMA ATA commands executed one by one for each port. 165.Sh SEE ALSO 166.Xr ada 4 , 167.Xr ata 4 , 168.Xr cam 4 , 169.Xr cd 4 , 170.Xr da 4 , 171.Xr sa 4 172.Sh HISTORY 173The 174.Nm 175driver first appeared in 176.Fx 8.1 . 177.Sh AUTHORS 178.An Alexander Motin Aq mav@FreeBSD.org 179