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 April 27, 2010 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.mvs. 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.Bl -tag -compact 71.It 0 72interface Power Management is disabled (default); 73.It 1 74device is allowed to initiate PM state change, host is passive; 75.It 4 76driver initiates PARTIAL PM state transition 1ms after port becomes idle; 77.It 5 78driver initiates SLUMBER PM state transition 125ms after port becomes idle. 79.El 80.Pp 81Note that interface Power Management is not compatible with 82device presence detection. 83A manual bus reset is needed on device hot-plug. 84.It Va hint.mvs. Ns Ar X Ns Va .sata_rev 85setting to nonzero value limits maximum SATA revision (speed). 86Values 1, 2 and 3 are respectively 1.5, 3 and 6Gbps. 87.El 88.Sh DESCRIPTION 89This driver provides the 90.Xr CAM 4 91subsystem with native access to the 92.Tn SATA 93ports of several generations (Gen-I/II/IIe) of Marvell SATA controllers. 94Each SATA port found is represented to CAM as a separate bus with one 95target, or, if HBA supports Port Multipliers (Gen-II/IIe), 16 targets. 96Most of the bus-management details are handled by the SATA-specific 97transport of CAM. 98Connected ATA disks are handled by the ATA protocol disk peripheral driver 99.Xr ada 4 . 100ATAPI devices are handled by the SCSI protocol peripheral drivers 101.Xr cd 4 , 102.Xr da 4 , 103.Xr sa 4 , 104etc. 105.Pp 106Driver features include support for Serial ATA and ATAPI devices, 107Port Multipliers (including FIS-based switching, when supported), 108hardware command queues (up to 31 command per port), 109Native Command Queuing, SATA interface Power Management, device hot-plug 110and Message Signaled Interrupts. 111.Pp 112Same hardware is also supported by atamarvell and ataadaptec drivers from 113.Xr ata 4 114subsystem. 115If both drivers are loaded at the same time, this one will be 116given precedence as the more functional of the two. 117.Sh HARDWARE 118The 119.Nm 120driver supports the following controllers: 121.Bl -tag -compact 122.It Gen-I (SATA 1.5Gbps): 123.Bl -bullet -compact 124.It 12588SX5040 126.It 12788SX5041 128.It 12988SX5080 130.It 13188SX5081 132.El 133.It Gen-II (SATA 3Gbps, NCQ, PMP): 134.Bl -bullet -compact 135.It 13688SX6040 137.It 13888SX6041 (including Adaptec 1420SA) 139.It 14088SX6080 141.It 14288SX6081 143.El 144.It Gen-IIe (SATA 3Gbps, NCQ, PMP with FBS): 145.Bl -bullet -compact 146.It 14788SX6042 148.It 14988SX7042 (including Adaptec 1430SA) 150.It 15188F5182 SoC 152.It 15388F6281 SoC 154.It 155MV78100 SoC 156.El 157.El 158Note, that this hardware supports command queueing and FIS-based switching 159only for ATA DMA commands. ATAPI and non-DMA ATA commands executed one by one 160for each port. 161.Pp 162.Sh SEE ALSO 163.Xr ada 4 , 164.Xr ata 4 , 165.Xr cam 4 , 166.Xr cd 4 , 167.Xr da 4 , 168.Xr sa 4 169.Sh HISTORY 170The 171.Nm 172driver first appeared in 173.Fx 8.1 . 174.Sh AUTHORS 175.An Alexander Motin Aq mav@FreeBSD.org . 176