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NAME
     siis - SiliconImage Serial ATA Host Controller driver


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

           device pci
           device scbus
           device siis

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

           siis_load="YES"

     The following tunables are settable from the loader:

     hint.siis.X.msi
     controls Message Signaled Interrupts (MSI) usage by the specified
     controller.

     hint.siisch.X.pm_level
     controls SATA interface Power Management for 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
                   passive.
     Note that interface Power Management is not compatible with device
     presence detection.  You will have to reset bus manually on device hot-
     plug.

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


DESCRIPTION
     This driver provides the CAM subsystem native access to the SATA ports of
     controller.  Each SATA port is represented to CAM as a separate bus with
     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), hardware command queues (31
     command per port), Native Command Queuing, SATA interface Power
     Management, device hot-plug and Message Signaled Interrupts.

     Same hardware is also supported by atasiliconimage driver 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.


HARDWARE
     The siis driver supports following controllers:
     ·   SiI3124
     ·   SiI3132
     ·   SiI3531


SEE ALSO
     ada(4), cd(4), da(4), sa(4), scsi(4), ata(4)


HISTORY
     The siis driver first appeared in FreeBSD 8.0.


AUTHORS
     Alexander Motin 〈mav@FreeBSD.org〉.