0afc94c17a
bottom of the manpages and order them consistently. GNU groff doesn't care about the ordering, and doesn't even mention CAVEATS and SECURITY CONSIDERATIONS as common sections and where to put them. Found by: mdocml lint run Reviewed by: ru
79 lines
1.8 KiB
Groff
79 lines
1.8 KiB
Groff
.\" $FreeBSD$
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.\"
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.Dd July 16, 2005
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.Dt EN 4
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.Os
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.Sh NAME
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.Nm en
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.Nd "device driver for Midway-based ATM interfaces"
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.Sh SYNOPSIS
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To compile this driver into the kernel,
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place the following lines in your
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kernel configuration file:
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.Bd -ragged -offset indent
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.Cd "device en"
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.Cd "device atm"
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.Cd "device utopia"
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.Ed
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.Pp
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Alternatively, to load the driver as a
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module at boot time, place the following line in
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.Xr loader.conf 5 :
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.Bd -literal -offset indent
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if_en_load="YES"
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.Ed
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.Sh DESCRIPTION
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The
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.Nm
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device driver supports Midway-based ATM interfaces including the
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Efficient Networks, Inc.\& ENI-155 and Adaptec ANA-59x0.
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Midway is an AAL5 SAR (Segmentation and Reassembly) chip.
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.Pp
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For configuring the card for IP see
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.Xr natmip 4 .
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.Pp
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The following sysctls are recognized by the driver additionally to those
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handled by
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.Xr utopia 4 :
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.Bl -tag -width indent
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.It Va hw.atm.enX.istats
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Contains an array of
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.Vt uint32_t
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with internal driver statistics.
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.It Va hw.atm.enX.debug
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This is a bit map of debugging options.
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This variable is only available when the driver is compiled with debugging
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support.
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.El
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.Pp
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The driver supports the media options
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.Cm sdh ,
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.Cm noscramb
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and
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.Cm unassigned
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(see
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.Xr utopia 4 ) .
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.Sh DIAGNOSTICS
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.Bd -literal
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en0 <Efficient Networks ENI-155p> rev 0 int a irq 5 on pci0:16
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en0: ATM midway v0, board IDs 6.0, Utopia (pipelined), 512KB on-board RAM
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en0: maximum DMA burst length = 64 bytes
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en0: 7 32KB receive buffers, 8 32KB transmit buffers allocated
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.Ed
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.Sh SEE ALSO
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.Xr natm 4 ,
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.Xr natmip 4 ,
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.Xr utopia 4 ,
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.Xr ifconfig 8 ,
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.Xr route 8
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.Sh AUTHORS
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.An Chuck Cranor
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of Washington University implemented
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.Nm
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driver in 1996 for
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.Nx .
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.Sh CAVEATS
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The driver extensively uses DMA on PCI.
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The first
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generation PCI chipsets do not work or exhibit poor performance.
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