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.Dd March 23, 2015 26.Dt MVS 4 27.Os 28.Sh NAME 29.Nm mvs 30.Nd Marvell Serial ATA Host Controller driver 31.Sh SYNOPSIS 32To compile this driver into the kernel, 33place the following lines in your 34kernel configuration file: 35.Bd -ragged -offset indent 36.Cd "device pci" 37.Cd "device scbus" 38.Cd "device mvs" 39.Ed 40.Pp 41Alternatively, to load the driver as a 42module at boot time, place the following line in 43.Xr loader.conf 5 : 44.Bd -literal -offset indent 45mvs_load="YES" 46.Ed 47.Pp 48The following tunables are settable from the 49.Xr loader 8 : 50.Bl -ohang 51.It Va hint.mvs. Ns Ar X Ns Va .msi 52controls Message Signaled Interrupts (MSI) usage by the specified controller. 53.It Va hint.mvs. Ns Ar X Ns Va .ccc 54controls Command Completion Coalescing (CCC) usage by the specified controller. 55Non-zero value enables CCC and defines maximum time (in us), request can wait 56for interrupt. 57CCC reduces number of context switches on systems with many parallel requests, 58but it can decrease disk performance on some workloads due to additional 59command latency. 60.It Va hint.mvs. Ns Ar X Ns Va .cccc 61defines number of completed commands for CCC, which trigger interrupt without 62waiting for specified coalescing timeout. 63.It Va hint.mvsch. Ns Ar X Ns Va .pm_level 64controls SATA interface Power Management for the specified channel, 65allowing some power to be saved at the cost of additional command 66latency. 67Possible values: 68.Pp 69.Bl -tag -width 4n -offset indent -compact 70.It 0 71interface Power Management is disabled (default); 72.It 1 73device is allowed to initiate PM state change, host is passive; 74.It 4 75driver initiates PARTIAL PM state transition 1ms after port becomes idle; 76.It 5 77driver initiates SLUMBER PM state transition 125ms after port becomes idle. 78.El 79.Pp 80Note that interface Power Management is not compatible with 81device presence detection. 82A manual bus reset is needed on device hot-plug. 83.It Va hint.mvsch. Ns Ar X Ns Va .sata_rev 84setting to nonzero value limits maximum SATA revision (speed). 85Values 1, 2 and 3 are respectively 1.5, 3 and 6Gbps. 86.El 87.Sh DESCRIPTION 88This driver provides the 89.Xr CAM 4 90subsystem with native access to the 91.Tn SATA 92ports of several generations (Gen-I/II/IIe) of Marvell SATA controllers. 93Each SATA port found is represented to CAM as a separate bus with one 94target, or, if HBA supports Port Multipliers (Gen-II/IIe), 16 targets. 95Most of the bus-management details are handled by the SATA-specific 96transport of CAM. 97Connected ATA disks are handled by the ATA protocol disk peripheral driver 98.Xr ada 4 . 99ATAPI devices are handled by the SCSI protocol peripheral drivers 100.Xr cd 4 , 101.Xr da 4 , 102.Xr sa 4 , 103etc. 104.Pp 105Driver features include support for Serial ATA and ATAPI devices, 106Port Multipliers (including FIS-based switching, when supported), 107hardware command queues (up to 31 command per port), 108Native Command Queuing, SATA interface Power Management, device hot-plug 109and Message Signaled Interrupts. 110.Sh HARDWARE 111The 112.Nm 113driver supports the following controllers: 114.Pp 115Gen-I (SATA 1.5Gbps): 116.Bl -bullet -compact -offset "xxxxxx" 117.It 11888SX5040 119.It 12088SX5041 121.It 12288SX5080 123.It 12488SX5081 125.El 126.Pp 127Gen-II (SATA 3Gbps, NCQ, PMP): 128.Bl -bullet -compact -offset "xxxxxx" 129.It 13088SX6040 131.It 13288SX6041 (including Adaptec 1420SA) 133.It 13488SX6080 135.It 13688SX6081 137.El 138.Pp 139Gen-IIe (SATA 3Gbps, NCQ, PMP with FBS): 140.Bl -bullet -compact -offset "xxxxxx" 141.It 14288SX6042 143.It 14488SX7042 (including Adaptec 1430SA) 145.It 14688F5182 SoC 147.It 14888F6281 SoC 149.It 150MV78100 SoC 151.El 152.Pp 153Note, that this hardware supports command queueing and FIS-based switching 154only for ATA DMA commands. 155ATAPI and non-DMA ATA commands executed one by one for each port. 156.Sh SEE ALSO 157.Xr ada 4 , 158.Xr ata 4 , 159.Xr cam 4 , 160.Xr cd 4 , 161.Xr da 4 , 162.Xr sa 4 163.Sh HISTORY 164The 165.Nm 166driver first appeared in 167.Fx 8.1 . 168.Sh AUTHORS 169.An Alexander Motin Aq Mt mav@FreeBSD.org 170