NAME
sis —
SiS 900, SiS 7016, and NS DP83815/6
10/100 Ethernet device
SYNOPSIS
sis* at pci?
icsphy* at mii?
nsphyter* at mii?
rlphy* at mii?
DESCRIPTION
The sis driver provides support for PCI
Ethernet adapters and embedded controllers based on the Silicon Integrated
Systems SiS 900 and SiS 7016 Fast Ethernet controller chips, as well as
support for adapters based on National Semiconductor DP83815 (MacPHYTER) and
DP83816 (MacPHYTER-II) PCI Ethernet controller chips, including the Netgear
FA311, FA312 and FA331, and the embedded controllers on Soekris net4xxx
single-board computers and lan16x1 multi-port PCI Ethernet adapters.
The SiS 900 is a 100Mbps Ethernet MAC and MII-compliant transceiver in a single package. It uses a bus master DMA and a scatter/gather descriptor scheme. The SiS 7016 is similar to the SiS 900 except that it has no internal PHY, requiring instead an external transceiver to be attached to its MII interface. The SiS 900 and SiS 7016 both have a 128-bit multicast hash filter and a single perfect filter entry for the station address.
The NS DP83815 and DP83816 are also 100Mbps Ethernet MACs with integrated PHY. The NatSemi chips and the SiS chips share many of the same features and a fairly similar programming interface, and hence are supported by the same driver.
The sis driver supports the following
media types:
- autoselect
- Enable autoselection of the media type and options. The user can manually override the autoselected mode by adding media options to the hostname.if(5) file.
- 10baseT
- Set 10Mbps operation. The mediaopt option can also be used to select either full-duplex or half-duplex modes.
- 100baseTX
- Set 100Mbps (Fast Ethernet) operation. The mediaopt option can also be used to select either full-duplex or half-duplex modes.
The sis driver supports the following
media options:
- full-duplex
- Force full duplex operation.
- half-duplex
- Force half duplex operation.
For more information on configuring this device, see ifconfig(8).
DIAGNOSTICS
- sis%d: couldn't map ports/memory
- A fatal initialization error has occurred.
- sis%d: couldn't map interrupt
- A fatal initialization error has occurred.
- sis%d: watchdog timeout
- The device has stopped responding to the network, or there is a problem with the network connection (cable).
- sis%d: no memory for rx list
- The driver failed to allocate an mbuf for the receiver ring.
- sis%d: no memory for tx list
- The driver failed to allocate an mbuf for the transmitter ring when allocating a pad buffer or collapsing an mbuf chain into a cluster.
- sis%d: chip is in D3 power state -- setting to D0
- This message applies only to adapters which support power management. Some
operating systems place the controller in low power mode when shutting
down, and some PCI BIOSes fail to bring the chip out of this state before
configuring it. The controller loses all of its PCI configuration in the
D3 state, so if the BIOS does not set it back to full power mode in time,
it won't be able to configure it correctly. The driver tries to detect
this condition and bring the adapter back to the D0 (full power) state,
but this may not be enough to return the driver to a fully operational
condition. If this message appears at boot time and the driver fails to
attach the device as a network interface, a second warm boot will have to
be performed to have the device properly configured.
Note that this condition only occurs when warm booting from another operating system. If the system is powered down prior to booting OpenBSD, the card should be configured correctly.
SEE ALSO
arp(4), icsphy(4), ifmedia(4), intro(4), netintro(4), nsphyter(4), pci(4), rlphy(4), hostname.if(5), ifconfig(8)
SiS 900 and SiS 7016 datasheets, http://www.sis.com.tw.
NatSemi DP83815 and DP83816 datasheets, http://www.national.com.
HISTORY
The sis device driver first appeared in
FreeBSD 3.0. OpenBSD support
was added in OpenBSD 2.7.
AUTHORS
The sis driver was written by
Bill Paul ⟨wpaul@ee.columbia.edu⟩ and
ported to OpenBSD by Aaron
Campbell ⟨aaron@openbsd.org⟩.