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EN(4) FreeBSD Kernel Interfaces Manual EN(4) NAME en -- device driver for Midway-based ATM interfaces SYNOPSIS To compile support for the en driver into your kernel, place the following lines in your kernel con- figuration file: device en device atm device utopia Alternatively, to load the en driver at boot time, place the following liness 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. FreeBSD 6.0 July 16, 2005 FreeBSD 6.0
NAME | SYNOPSIS | DESCRIPTION | DIAGNOSTICS | CAVEATS | SEE ALSO | AUTHORS
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