1 .\" $FreeBSD: src/share/man/man4/man4.i386/en.4,v 1.7.2.5 2001/10/10 11:46:52 murray Exp $
8 .Nd device driver for Midway-based ATM interfaces
11 .Cd "pseudo-device atm"
15 device driver supports Midway-based ATM interfaces including the
16 Efficient Networks, Inc. ENI-155 and Adaptec ANA-59x0.
17 Midway is an ALL5 SAR (Segmentation and Reassenbly) chip.
19 The driver only supports ATM PVCs. SVC or ATM-ARP is not supported.
21 To configure the card for IP, use something like:
22 .Dl # ifconfig en0 128.252.200.1 netmask 0xffffff00 up
23 To add a PVC to a host you must use the ``route'' command:
24 .Dl # route add -iface <remote IP address> -link en0:z.0.x.y
25 where x and y are the byte encoding of the VCI to use, and z is the
26 byte encoding of the following flags.
28 .Dl 0x02 (if using AAL5, use a LLCSNAP header)
29 Thus, parameter 3 means AAL5 and LLC/SNAP encapsulation.
30 Note that BPF works only with LLC/SNAP encapsulation.
32 Suppose you have 2 hosts 128.252.200.1 and 128.252.200.2 connected
33 by ATM through PVC # 201 (0xc9).
34 To enable the link use the following commands:
35 .Dl on host 128.252.200.1:
36 .Dl # ifconfig en0 128.252.200.1 netmask 0xffffff00 up
37 .Dl # route add -iface 128.252.200.2 -link en0:3.0.0.c9
39 .Dl on host 128.252.200.2:
40 .Dl # ifconfig en0 128.252.200.2 netmask 0xffffff00 up
41 .Dl # route add -iface 128.252.200.1 -link en0:3.0.0.c9
44 en0 <Efficient Networks ENI-155p> rev 0 int a irq 5 on pci0:16
45 en0: ATM midway v0, board IDs 6.0, Utopia (pipelined), 512KB on-board RAM
46 en0: maximum DMA burst length = 64 bytes
47 en0: 7 32KB receive buffers, 8 32KB transmit buffers allocated
50 The driver extensively uses DMA on PCI.
52 generation PCI chipsets do not work or exhibit poor performance.
58 of Washington University implemented EN driver