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283 lines
9.2 KiB
Groff
283 lines
9.2 KiB
Groff
.\"
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.\" Copyright (c) 2001-2003
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.\" Fraunhofer Institute for Open Communication Systems (FhG Fokus).
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.\" All rights reserved.
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.\"
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.\" Redistribution and use in source and binary forms, with or without
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.\" modification, are permitted provided that the following conditions
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.\" are met:
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.\" 1. Redistributions of source code must retain the above copyright
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.\" notice, this list of conditions and the following disclaimer.
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.\" 2. Redistributions in binary form must reproduce the above copyright
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.\" notice, this list of conditions and the following disclaimer in the
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.\" documentation and/or other materials provided with the distribution.
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.\"
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.\" THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
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.\" ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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.\" IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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.\" ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
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.\" FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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.\" DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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.\" OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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.\" HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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.\" LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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.\" OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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.\" SUCH DAMAGE.
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.\"
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.\" Author: Hartmut Brandt <harti@FreeBSD.org>
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.\"
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.\" $FreeBSD$
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.\"
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.\" hatm(4) man page
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.\"
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.Dd May 15, 2003
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.Dt HATM 4
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.Os
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.Sh NAME
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.Nm hatm
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.Nd "device driver for Fore/Marconi HE155 and HE622 ATM interfaces"
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.Sh SYNOPSIS
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.Cd device hatm
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.Cd device utopia
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.Cd device atm
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.Pp
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.Cd options NATM
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.Sh DESCRIPTION
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The
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.Nm
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device driver supports the FORE (now Marconi) HE155 and HE622 ATM interface
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cards.
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The driver interfaces with the
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.Xr natm 4
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framework,
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.Xr netgraph 4
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and the HARP ATM stack.
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It provides only PVC services.
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Signalling, ATMARP, ILMI and other
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higher layer protocols are implemented using
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.Xr netgraph 4
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or HARP.
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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.hatm.natm_traffic
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This is the traffic type to be used for NATM pvc connections.
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The type of
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this variable is integer and it must have one of the values 0 (UBR) or 1 (CBR).
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.It Va hw.atm.hatm.natm_pcr
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This is the peak cell rate to be used for NATM CBR connections.
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.It Va hw.atm.hatm Ns Ar N Ns Va .stats
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Contains an array of
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.Vt uint32_t
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with device specific statistics.
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.It Va hw.atm.hatm Ns Ar N Ns Va .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.hatm Ns Ar N Ns Va .debug
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.Bf Em
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(Only if debugging enabled.)
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.Ef
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These are the debugging flags.
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See
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.Pa src/sys/dev/hatm/if_hatmvar.h
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for the possible flags.
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.It Va hw.atm.hatm Ns Ar N Ns Va .tsr
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.Bf Em
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(Only if debugging enabled.)
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.Ef
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This is an array containing all transmission status registers.
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For each of the
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4096 possible VCCs there are 15 32-bit registers.
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.It Va hw.atm.hatm Ns Ar N Ns Va .tpd
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.Bf Em
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(Only if debugging enabled.)
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.Ef
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This is an array containing all on card current transmission packet descriptors.
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For each of the 4096 possible VCCs there are 16 32-bit registers.
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.It Va hw.atm.hatm Ns Ar N Ns Va .mbox
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.Bf Em
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(Only if debugging enabled.)
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.Ef
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This is an array containing the mbox registers.
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.It Va hw.atm.hatm Ns Ar N Ns Va .cm
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.Bf Em
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(Only if debugging enabled.)
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.Ef
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This is an array containing all connection memory registers.
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The first 32-bit integer of this array is the ABR base address.
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.It Va hw.atm.hatm Ns Ar N Ns Va .heregs
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.Bf Em
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(Only if debugging enabled.)
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.Ef
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This is an array containing all card registers including SUNI and the FLASH ROM.
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.It Va hw.atm.hatm Ns Ar N Ns Va .lbmem
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.Bf Em
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(Only if debugging enabled.)
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.Ef
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Returns the contents of the local memory.
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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 , 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 ENVIRONMENT
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When attaching to a device the driver checks the kernel environment
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(see
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.Xr kenv 1 )
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to see if the default queues sizes should be overwritten or not.
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The
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following variables are checked and interpreted as unsigned integer
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values (in either radix):
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.Bl -tag -width indent
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.It Va hw.hatm Ns Ar N Ns Va .rbps0_size
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Size of the small receive buffer pool 0.
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This pool is used for all
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except raw AAL connections.
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The pool size must be a power of two between
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4 and 8192 inclusive.
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When attaching the driver allocates this number
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of mbufs.
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.It Va hw.hatm Ns Ar N Ns Va .rbps0_thresh
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Interrupt threshold for small receive buffer pool 0.
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When the number of free
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buffers in the pool falls below this threshold it generates an interrupt
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so that the driver can refill the pool.
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.It Va hw.hatm Ns Ar N Ns Va .rbpl0_thresh
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Size of the large receive buffer pool 0.
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This pool is used for all
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except raw AAL connections.
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The pool size must be a power of two between
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4 and 8192 inclusive.
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When attaching the driver allocates this number
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of mbufs with clusters.
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.It Va hw.hatm Ns Ar N Ns Va .rbpl0_thresh
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Interrupt threshold for large receive buffer pool 0.
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When the number of free
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buffers in the pool falls below this threshold it generates an interrupt
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so that the driver can refill the pool.
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.It Va hw.hatm Ns Ar N Ns Va .rbrq0_size
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Size of receive buffer return queue 0.
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This queue is used to return buffers
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filled with received frames to the driver.
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The size must be a power of 2
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between 1 and 16384 inclusive.
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.It Va hw.hatm Ns Ar N Ns Va .rbrq0_thresh
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Interrupt threshold for receive buffer return queue 0.
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This threshold
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should only be triggered in exceptional cases.
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.It Va hw.hatm Ns Ar N Ns Va .rbrq0_tout
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Interrupt timeout for receive buffer return queue 0.
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An interrupt is generated
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after this time if the queue is not empty.
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The number is in internal card
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ticks.
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.It Va hw.hatm Ns Ar N Ns Va .rbrq0_pcnt
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Packet count threshold for receive buffer return queue 0.
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An interrupt
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is generated if this number of packets is in the queue.
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.It Va hw.hatm Ns Ar N Ns Va .rbps1_size
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Size of the small receive buffer pool 1.
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This pool is used for all
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raw AAL connections.
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The pool size must be a power of two between
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4 and 8192 inclusive.
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When attaching the driver allocates this number
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of mbufs.
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.It Va hw.hatm Ns Ar N Ns Va .rbps1_thresh
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Interrupt threshold for small receive buffer pool 1.
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When the number of free
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buffers in the pool falls below this threshold it generates an interrupt
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so that the driver can refill the pool.
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.It Va hw.hatm Ns Ar N Ns Va .rbrq1_size
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Size of receive buffer return queue 1.
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This queue is used to return buffers
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filled with received cells to the driver.
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The size must be a power of 2
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between 1 and 16384 inclusive.
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.It Va hw.hatm Ns Ar N Ns Va .rbrq1_thresh
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Interrupt threshold for receive buffer return queue 1.
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This threshold
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should only be triggered in exceptional cases.
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.It Va hw.hatm Ns Ar N Ns Va .rbrq1_tout
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Interrupt timeout for receive buffer return queue 1.
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An interrupt is generated
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after this time if the queue is not empty.
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The number is in internal card
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ticks.
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.It Va hw.hatm Ns Ar N Ns Va .rbrq1_pcnt
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Packet count threshold for receive buffer return queue 0.
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An interrupt
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is generated if this number of cells is in the queue.
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.It Va hw.hatm Ns Ar N Ns Va .irq0_size
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Size of interrupt queue 0.
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This must be a number between 1 and 1023 inclusive.
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.It Va hw.hatm Ns Ar N Ns Va .irq0_thresh
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Interrupt retrigger threshold of interrupt queue 0.
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A new interrupt is trigger
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if the queue fill state reaches this threshold and the interrupt was no
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served.
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.It Va hw.hatm Ns Ar N Ns Va .tbrq0_size
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Transmit buffer return queue 0 size.
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This queue is used to feed back empty
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buffers of transmitted frames back to the driver.
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It must be a power of 2
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between 1 and 4096 inclusive.
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.It Va hw.hatm Ns Ar N Ns Va .tbrq0_thresh
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Transmit buffer return queue 0 threshold.
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An interrupt is generated if the
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queue fill state reaches this point.
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.It Va hw.hatm Ns Ar N Ns Va .tpdrq_size
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Transmit descriptor ready queue size.
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This queue is used by the driver
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to feed transmit descriptors into the card.
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The size must be a power of 2
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between 1 and 16384 inclusive.
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.It Va hw.hatm Ns Ar N Ns Va .tpdmax
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Maximum number of active TPDs per connection.
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This controls the maximum
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number of outstanding packet chunks per connection and thus the maximum
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delay packets can have because of queueing on the adapter.
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If set to 0,
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a connection can eat up all available TPDs.
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.It Va hw.hatm Ns Ar N Ns Va .mbuf_max_pages
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Maximum number of memory pages allocated to small external mbufs.
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This must not be zero and not larger than 65536.
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.El
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.Sh DIAGNOSTICS
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.Bd -literal
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hatm0: <FORE HE> mem 0xd2600000-0xd26fffff irq 9 at device 15.0 on pci2
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hatm0: ForeRunnerHE 622, Rev. D, S/N 2949834, MAC=00:20:48:2d:02:ca
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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 Harti Brandt Aq Mt harti@FreeBSD.org
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.Sh CAVEATS
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When putting a HE155 into a 64-bit 66MHz PCI slot the machine may hang.
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This occurs very early in the POST so that even the display does not turn on.
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The HE155 runs only in 33MHz slots (either 32 or 64-bit).
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HE622 cards work just fine in 64-bit slots.
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.Pp
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The driver may not work with bounce buffer, because of
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.Xr bus_dmamap_sync 9
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missing the
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.Fa offset
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and
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.Fa len
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arguments the
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.Nx
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function has.
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