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