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):
The following tunables are settable from the
loader(8):
- 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 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 passive.
Note that interface Power Management is not compatible with device presence
detection. A manual bus reset is needed 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(4) subsystem with
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.
The activity LEDs of the adapters supported by the
siis
driver can be controlled via the
led(4) API for localization or status reporting
purposes.
Same hardware is also supported by the 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 the following
controller chips:
- SiI3124 (PCI-X 133MHz/64bit, 4 ports)
- SiI3131 (PCIe 1.0 x1, 1 port)
- SiI3132 (PCIe 1.0 x1, 2 ports)
- SiI3531 (PCIe 1.0 x1, 1 port)
FILES¶
- /dev/led/siisch*
- identification LED device nodes
SEE ALSO¶
ada(4),
ata(4),
cam(4),
cd(4),
da(4),
led(4),
sa(4)
HISTORY¶
The
siis
driver first appeared in
FreeBSD 8.0.
AUTHORS¶
Alexander Motin
⟨mav@FreeBSD.org⟩.