d00275330d
MII-compliant PHY drivers. Many 10/100 ethernet NICs available today either use an MII transceiver or have built-in transceivers that can be programmed using an MII interface. It makes sense then to separate this support out into common code instead of duplicating it in all of the NIC drivers. The mii code also handles all of the media detection, selection and reporting via the ifmedia interface. This is basically the same code from NetBSD's /sys/dev/mii, except it's been adapted to FreeBSD's bus architecture. The advantage to this is that it automatically allows everything to be turned into a loadable module. There are some common functions for use in drivers once an miibus has been attached (mii_mediachg(), mii_pollstat(), mii_tick()) as well as individual PHY drivers. There is also a generic driver for all PHYs that aren't handled by a specific driver. It's possible to do this because all 10/100 PHYs implement the same general register set in addition to their vendor-specific register sets, so for the most part you can use one driver for pretty much any PHY. There are a couple of oddball exceptions though, hence the need to have specific drivers. There are two layers: the generic "miibus" layer and the PHY driver layer. The drivers are child devices of "miibus" and the "miibus" is a child of a given NIC driver. The "miibus" code and the PHY drivers can actually be compiled and kldoaded as completely separate modules or compiled together into one module. For the moment I'm using the latter approach since the code is relatively small. Currently there are only three PHY drivers here: the generic driver, the built-in 3Com XL driver and the NS DP83840 driver. I'll be adding others later as I convert various NIC drivers to use this code. I realize that I'm cvs adding this stuff instead of importing it onto a separate vendor branch, but in my opinion the import approach doesn't really offer any significant advantage: I'm going to be maintaining this stuff and writing my own PHY drivers one way or the other.
116 lines
4.8 KiB
C
116 lines
4.8 KiB
C
/* $NetBSD: nsphyreg.h,v 1.1 1998/08/10 23:58:39 thorpej Exp $ */
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/*-
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* Copyright (c) 1998 The NetBSD Foundation, Inc.
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* All rights reserved.
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*
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* This code is derived from software contributed to The NetBSD Foundation
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* by Jason R. Thorpe of the Numerical Aerospace Simulation Facility,
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* NASA Ames Research Center.
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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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* 3. All advertising materials mentioning features or use of this software
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* must display the following acknowledgement:
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* This product includes software developed by the NetBSD
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* Foundation, Inc. and its contributors.
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* 4. Neither the name of The NetBSD Foundation nor the names of its
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* contributors may be used to endorse or promote products derived
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* from this software without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
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* ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
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* TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
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* PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
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* BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
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* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
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* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
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* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
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* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
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* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
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* POSSIBILITY OF SUCH DAMAGE.
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*
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* $Id$
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*/
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#ifndef _DEV_MII_NSPHYREG_H_
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#define _DEV_MII_NSPHYREG_H_
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/*
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* DP83840 registers.
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*/
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#define MII_NSPHY_DCR 0x12 /* Disconnect counter */
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#define MII_NSPHY_FCSCR 0x13 /* False carrier sense counter */
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#define MII_NSPHY_RECR 0x15 /* Receive error counter */
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#define MII_NSPHY_SRR 0x16 /* Silicon revision */
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#define MII_NSPHY_PCR 0x17 /* PCS sub-layer configuration */
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#define PCR_NRZI 0x8000 /* NRZI encoding enabled for 100TX */
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#define PCR_DESCRTOSEL 0x4000 /* descrambler t/o select (2ms) */
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#define PCR_DESCRTODIS 0x2000 /* descrambler t/o disable */
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#define PCR_REPEATER 0x1000 /* repeater mode */
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#define PCR_ENCSEL 0x0800 /* encoder mode select */
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#define PCR_CLK25MDIS 0x0080 /* CLK25M disable */
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#define PCR_FLINK100 0x0040 /* force good link in 100mbps */
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#define PCR_CIMDIS 0x0020 /* carrier integrity monitor disable */
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#define PCR_TXOFF 0x0010 /* force transmit off */
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#define PCR_LED1MODE 0x0004 /* LED1 mode: see below */
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#define PCR_LED4MODE 0x0002 /* LED4 mode: see below */
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/*
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* LED1 Mode:
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*
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* 1 LED1 output configured to PAR's CON_STATUS, useful for
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* network management in 100baseTX mode.
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*
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* 0 Normal LED1 operation - 10baseTX and 100baseTX transmission
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* activity.
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*
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* LED4 Mode:
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*
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* 1 LED4 output configured to indicate full-duplex in both
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* 10baseT and 100baseTX modes.
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*
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* 0 LED4 output configured to indicate polarity in 10baseT
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* mode and full-duplex in 100baseTX mode.
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*/
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#define MII_NSPHY_LBREMR 0x18 /* Loopback, bypass, error mask */
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#define LBREMR_BADSSDEN 0x8000 /* enable bad SSD detection */
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#define LBREMR_BP4B5B 0x4000 /* bypass 4b/5b encoding */
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#define LBREMR_BPSCR 0x2000 /* bypass scrambler */
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#define LBREMR_BPALIGN 0x1000 /* bypass alignment function */
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#define LBREMR_10LOOP 0x0800 /* 10baseT loopback */
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#define LBREMR_LB1 0x0200 /* loopback ctl 1 */
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#define LBREMR_LB0 0x0100 /* loopback ctl 0 */
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#define LBREMR_ALTCRS 0x0040 /* alt crs operation */
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#define LBREMR_LOOPXMTDIS 0x0020 /* disable transmit in 100TX loopbk */
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#define LBREMR_CODEERR 0x0010 /* code errors */
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#define LBREMR_PEERR 0x0008 /* premature end errors */
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#define LBREMR_LINKERR 0x0004 /* link errors */
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#define LBREMR_PKTERR 0x0002 /* packet errors */
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#define MII_NSPHY_PAR 0x19 /* Physical address and status */
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#define PAR_DISCRSJAB 0x0800 /* disable car sense during jab */
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#define PAR_ANENSTAT 0x0400 /* autoneg mode status */
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#define PAR_FEFIEN 0x0100 /* far end fault enable */
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#define PAR_FDX 0x0080 /* full duplex status */
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#define PAR_10 0x0040 /* 10mbps mode */
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#define PAR_CON 0x0020 /* connect status */
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#define PAR_AMASK 0x001f /* PHY address bits */
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#define MII_NSPHY_10BTSR 0x1b /* 10baseT status */
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#define MII_NSPHY_10BTCR 0x1c /* 10baseT configuration */
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#endif /* _DEV_MII_NSPHYREG_H_ */
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