SNC(4) BSD/i386 Kernel Interfaces Manual SNC(4)NAME
snc -- National Semiconductor DP8393X SONIC Ethernet adapter driver
SYNOPSIS
device isa
device snc
DESCRIPTION
The snc driver provides support for the National Semiconductor SONIC Ethernet adapters.
HARDWARE
The snc driver supports the following cards:
o National Semiconductor DP83934AVQB
o NEC PC-9801-83
o NEC PC-9801-84
o NEC PC-9801-103
o NEC PC-9801-104
o NEC PC-9801N-15
o NEC PC-9801N-25
o NEC PC-9801N-J02 PCMCIA
o NEC PC-9801N-J02R PCMCIA
The snc driver also includes support for the National Semiconductor NS46C46 as 64 * 16 bits Microwave Serial EEPROM.
IMPLEMENTATION NOTES
Accessing SONIC card data structures and registers as 32 bit values makes code endianness independent. The SONIC is however always in big-
endian mode so it is necessary to ensure that data structures shared between the CPU and the SONIC card are always in big-endian order. The
snc driver supports the PC-98 C-Bus, and PnP buses. Support is also provided for the legacy C-Bus.
DIAGNOSTICS
The following driver specific error messages may be reported:
snc%d: snc_nec16_register_irq: unsupported irq (%d) The card returned an IRQ which is not supported by the driver.
snc%d: invalid packet length %d bytes An attempt to transfer a data packet failed due to an invalid packet length.
SEE ALSO netintro(4), bus_alloc_resource_any(9)HISTORY
The snc driver was ported from NetBSD by Motomichi Matsuzaki <mzaki@e-mail.ne.jp> and Hiroshi Yamashita <bluemoon@msj.biglobe.ne.jp>. It
first appeared in FreeBSD 4.2. This manual page first appeared in FreeBSD 5.3.
AUTHORS
This manual page was written by Tom Rhodes <trhodes@FreeBSD.org>.
BUGS
Currently the snc driver only works on the PC-98 architecture. It should probably work on the i386 architecture as well.
BSD September 4, 2004 BSD
Check Out this Related Man Page
SN(4) BSD Kernel Interfaces Manual SN(4)NAME
sn -- National Semiconductor DP83932 (SONIC) based Ethernet device driver
SYNOPSIS
arc
sn0 at jazzio?
mac68k
sn* at obio?
sn* at nubus?
DESCRIPTION
The sn interface provides access to a 10 Mb/s Ethernet network via the National Semiconductor DP83932 (SONIC) Ethernet chip set.
Each of the host's network addresses is specified at boot time with an SIOCSIFADDR ioctl(2). The sn interface employs the address resolution
protocol described in arp(4) to dynamically map between Internet and Ethernet addresses on the local network.
HARDWARE
arc
The sn driver supports on-board JAZZ based SONIC interfaces found on Acer PICA and NEC machines.
mac68k
The sn driver is currently known to support the following NuBus cards:
o Apple LC Twisted-pair (part #820-0532-A) PDS card
o Cayman Gatorcard PDS
o Dayna DaynaPort/E30
In addition, the sn interface supports the following interfaces:
o on-board Ethernet for non-AV Quadras
o on-board Ethernet for 500-series PowerBooks
o Apple CS Ethernet Twisted-pair card for Comm Slot found on LC575, Quadra 630, LC630, and Performa 580.
DIAGNOSTICS
sn%d: transmit FIFO underrun
sn%d: receive FIFO overrun
sn%d: receive buffer exceeded
sn%d: receive buffers exhausted
sn%d: receive descriptors exhausted These messages indicate that the interface gets errors (due to heavy load etc.) and reinitialized.
SEE ALSO arp(4), inet(4), netintro(4), ifconfig(8)HISTORY
The sn interface for mac68k, which was derived from a driver for old NetBSD/pica port, first appeared in NetBSD 1.3.
Jason Thorpe has rewritten a new machine independent SONIC driver which uses bus_dma(9) and bus_space(9) APIs after NetBSD 1.5 release, and
NetBSD/arc has been switched to using the machine independent (MI) driver.
NetBSD/mac68k has also been switched to using the MI driver after the NetBSD 4.0 release.
BSD May 16, 2009 BSD