mvs man page on FreeBSD

Man page or keyword search:  
man Server   9747 pages
apropos Keyword Search (all sections)
Output format
FreeBSD logo
[printable version]

MVS(4)			 BSD Kernel Interfaces Manual			MVS(4)

     mvs — Marvell Serial ATA Host Controller driver

     To compile this driver into the kernel, place the following lines in your
     kernel configuration file:

	   device pci
	   device scbus
	   device mvs

     Alternatively, to load the driver as a module at boot time, place the
     following line in loader.conf(5):


     The following tunables are settable from the loader(8):

     controls Message Signaled Interrupts (MSI) usage by the specified con‐

     controls Command Completion Coalescing (CCC) usage by the specified con‐
     troller.  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 perfor‐
     mance on some workloads due to additional command latency.

     defines number of completed commands for CCC, which trigger interrupt
     without waiting for specified coalescing timeout.

     controls SATA interface Power Management for the specified channel,
     allowing some power to be saved at the cost of additional command
     latency.  Possible values:
     0		   interface Power Management is disabled (default);
     1		   device is allowed to initiate PM state change, host is pas‐
     4		   driver initiates PARTIAL PM state transition 1ms after port
		   becomes idle;
     5		   driver initiates SLUMBER PM state transition 125ms after
		   port becomes idle.

     Note that interface Power Management is not compatible with device pres‐
     ence detection.  A manual bus reset is needed on device hot-plug.

     setting to nonzero value limits maximum SATA revision (speed).  Values 1,
     2 and 3 are respectively 1.5, 3 and 6Gbps.

     This driver provides the CAM(4) subsystem with native access to the 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 ada(4).  ATAPI devices are handled by the SCSI
     protocol peripheral drivers cd(4), da(4), sa(4), etc.

     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 Inter‐

     Same hardware is also supported by atamarvell and ataadaptec drivers from
     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.

     The mvs driver supports the following controllers:
     Gen-I (SATA 1.5Gbps):
		   ·   88SX5040
		   ·   88SX5041
		   ·   88SX5080
		   ·   88SX5081
     Gen-II (SATA 3Gbps, NCQ, PMP):
		   ·   88SX6040
		   ·   88SX6041 (including Adaptec 1420SA)
		   ·   88SX6080
		   ·   88SX6081
     Gen-IIe (SATA 3Gbps, NCQ, PMP with FBS):
		   ·   88SX6042
		   ·   88SX7042 (including Adaptec 1430SA)
		   ·   88F5182 SoC
		   ·   88F6281 SoC
		   ·   MV78100 SoC
     Note, that this hardware supports command queueing and FIS-based switch‐
     ing only for ATA DMA commands. ATAPI and non-DMA ATA commands executed
     one by one for each port.

     ada(4), ata(4), cam(4), cd(4), da(4), sa(4)

     The mvs driver first appeared in FreeBSD 8.1.

     Alexander Motin ⟨⟩.

BSD				April 27, 2010				   BSD

List of man pages available for FreeBSD

Copyright (c) for man pages and the logo by the respective OS vendor.

For those who want to learn more, the polarhome community provides shell access and support.

[legal] [privacy] [GNU] [policy] [cookies] [netiquette] [sponsors] [FAQ]
Polarhome, production since 1999.
Member of Polarhome portal.
Based on Fawad Halim's script.
Vote for polarhome
Free Shell Accounts :: the biggest list on the net