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diff --git a/share/man/man4/en.4 b/share/man/man4/en.4 new file mode 100644 index 0000000..3310e62 --- /dev/null +++ b/share/man/man4/en.4 @@ -0,0 +1,58 @@ +.Dd December 29, 1997 +.Dt EN 4 +.Os BSD +.Sh NAME +.Nm en +.Nd +device driver for Midway-based ATM interfaces +.Sh SYNOPSIS +.Cd "device en0" +.Cd "pseudo-device atm" +.Sh DESCRIPTION +The +.Nm +device driver supports Midway-based ATM interfaces including the +Efficient Networks, Inc. ENI-155 and Adaptec ANA-59x0. +Midway is an ALL5 SAR (Segmentation and Reassenbly) chip. +.Pp +The driver only supports ATM PVCs. SVC or ATM-ARP is not supported. +.Pp +To configure the card for IP, use something like: +.Dl # ifconfig en0 128.252.200.1 netmask 0xffffff00 up +To add a PVC to a host you must use the ``route'' command: +.Dl # route add -iface <remote IP address> -link en0:z.0.x.y +where x and y are the byte encoding of the VCI to use, and z is the +byte encoding of the following flags. +.Dl 0x01 (use AAL5), +.Dl 0x02 (if using AAL5, use a LLCSNAP header) +Thus, parameter 3 means AAL5 and LLC/SNAP encapsulation. +Note that BPF works only with LLC/SNAP encapsulation. +.Sh EXAMPLES +Suppose you have 2 hosts 128.252.200.1 and 128.252.200.2 connected +by ATM through PVC # 201 (0xc9). +To enable the link use the following commands: +.Dl on host 128.252.200.1: +.Dl # ifconfig en0 128.252.200.1 netmask 0xffffff00 up +.Dl # route add -iface 128.252.200.2 -link en0:3.0.0.c9 +.Pp +.Dl on host 128.252.200.2: +.Dl # ifconfig en0 128.252.200.2 netmask 0xffffff00 up +.Dl # route add -iface 128.252.200.1 -link en0:3.0.0.c9 +.Sh DIAGNOSTICS +.Bl -diag +.It "en0 <Efficient Networks ENI-155p> rev 0 int a irq 5 on pci0:16" +.It "en0: ATM midway v0, board IDs 6.0, Utopia (pipelined), 512KB on-board RAM" +.It "en0: maximum DMA burst length = 64 bytes" +.It "en0: 7 32KB receive buffers, 8 32KB transmit buffers allocated" +.El +.Sh CAVEATS +The driver extensively uses DMA on PCI. The first +generation PCI chipsets do not work or exhibit poor performance. +.Sh SEE ALSO +.Xr ifconfig 8 , +.Xr route 8 , +.Xr pvcsif 8 , +.Xr pvctxctl 8 +.Sh AUTHORS +Chuck Cranor of Washington University implemented EN driver +in 1996 for NetBSD. |