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en(4) [netbsd man page]

EN(4)							   BSD Kernel Interfaces Manual 						     EN(4)

en -- Midway-based ATM interfaces device driver SYNOPSIS
en* at pci? dev ? function ? en* at sbus? slot ? offset ? DESCRIPTION
The en device driver supports Midway-based ATM interfaces including the Efficient Networks, Inc. ENI-155 and Adaptec 5900 and 5905. OPTIONS
The Efficient Networks, Inc. and Adaptec interfaces use significantly different DMA engines. In order to reduce the size of the en driver object, exactly one of the following options may be placed in the kernel configuration file: MIDWAY_ADPONLY Include support for Adaptec interfaces only. MIDWAY_ENIONLY Include support for Efficient Networks, Inc. interfaces only. HARDWARE
Cards supported by the en driver include: Efficient Networks, Inc. ENI-155 Adaptec 5900 and 5905 SEE ALSO
intro(4), pci(4), sbus(4), ifconfig(8) BUGS
The Sbus attachment of the en driver only currently functions on sun4c class systems. BSD
November 10, 1997 BSD

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EN(4)							   BSD Kernel Interfaces Manual 						     EN(4)

en -- device driver for Midway-based ATM interfaces SYNOPSIS
To compile this driver into the kernel, place the following lines in your kernel configuration file: device en device atm device utopia Alternatively, to load the driver as a module at boot time, place the following line in loader.conf(5): if_en_load="YES" DESCRIPTION
The en device driver supports Midway-based ATM interfaces including the Efficient Networks, Inc. ENI-155 and Adaptec ANA-59x0. Midway is an AAL5 SAR (Segmentation and Reassembly) chip. For configuring the card for IP see natmip(4). The following sysctls are recognized by the driver additionally to those handled by utopia(4): hw.atm.enX.istats Contains an array of uint32_t with internal driver statistics. hw.atm.enX.debug This is a bit map of debugging options. This variable is only available when the driver is compiled with debugging support. The driver supports the media options sdh, noscramb and unassigned (see utopia(4)). DIAGNOSTICS
en0 <Efficient Networks ENI-155p> rev 0 int a irq 5 on pci0:16 en0: ATM midway v0, board IDs 6.0, Utopia (pipelined), 512KB on-board RAM en0: maximum DMA burst length = 64 bytes en0: 7 32KB receive buffers, 8 32KB transmit buffers allocated CAVEATS
The driver extensively uses DMA on PCI. The first generation PCI chipsets do not work or exhibit poor performance. SEE ALSO
natm(4), natmip(4), utopia(4), ifconfig(8), route(8) AUTHORS
Chuck Cranor of Washington University implemented en driver in 1996 for NetBSD. BSD
July 16, 2005 BSD
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