Update media selection, add 100Mbit info.
Add cross-references to parent buses.
This commit is contained in:
jonathan
parent
bf37fc50d0
commit
89ea27100f
@ -1,4 +1,4 @@
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.\" $NetBSD: ep.4,v 1.15 1997/04/10 06:36:28 jeremy Exp $
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.\" $NetBSD: ep.4,v 1.16 1997/04/27 09:43:05 jonathan Exp $
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.\"
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.\" Copyright (c) 1997 Jonathan Stone
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.\" All rights reserved.
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@ -49,7 +49,7 @@ The
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device driver supports the 3Com Etherlink III family of cards on Alpha
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and i386 CPUs. Supported Etherlink III cards include:
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.Pp
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.Bl -tag -width xxxxxx
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.Bl -tag -width xxxxxx -offset indent
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.It 3c509
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ISA 10Mbit card, in BNC and multiport variants
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.It 3c509B
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@ -67,31 +67,20 @@ PCI 10Mbit multiport card with busmastering capability
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.It 3c595
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PCI 10/100Mbit multiport card with busmastering capability
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.It 3c900
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PCI 10Mbit card in UTP and multiport variants
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PCI 10Mbit card in 10baseT and multiport variants
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.It 3c905
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PCI 10/100Mbit cards
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.El
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The
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.Nm ep
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driver provides full support for the 10Mbit-only cards.
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Due to limitations in
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.Xr ifconfig 8 ,
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the
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.Nm ep
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driver does not provide full support for selecting and switching
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media on the 10/100 cards. (In all other respects, the
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.Nm ep
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driver supports the 10/100 cards as completely as the 10Mbit cards.)
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The
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.Nm ep
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driver also works with 3c589 PCMCIA cards, if pre-configured to
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work as ISA devices. NetBSD does not include PCMCIA support at this time.
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.Sh 10MBIT MEDIA SELECTION
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.Sh MEDIA SELECTION
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Various models of these cards come with a different assortment of
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media. Supported 10Mbit Ethernet media include:
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.Pp
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.Bl -tag -width xxxxxxxxxxxxxxxx
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.Bl -tag -width xxxxxxxxxx -offset indent
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.It AUI/DIX
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Standard 15 pin connector
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.It 10Base2
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@ -100,22 +89,49 @@ BNC, also known as thin-net
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UTP, also known as twisted pair
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.El
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.Pp
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The 100Mbit cards each support exactly one of the following 100Mbit
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standards:
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.Pp
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.Bl -tag -width xxxxxxxxxx -offset indent
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.It 100baseTX
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100Mbit over cat-5 UTP
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.It 100baseT4
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100Mbit over all four pairs of cat-3 UTP
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.It 100baseFX
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100Mbit over fiber
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.It MII
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MII connection to external 100Mbit PHY
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.El
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Note that the 100baseTX and 100baseT4 cards can also run as 10baseT.
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.Pp
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The
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.Nm
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driver defaults to using the BNC port.
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To choose an alternative port,
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driver defaults to using the port selected via the vendor-supplied
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configuration utility.
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To choose an alternate port,
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use the following media flags with
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.Xr ifconfig 8
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or in your /etc/ifconfig.ep? file.
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.Pp
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.Bl -tag -width xxxxxxxxxxxxxxxx
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.It 10base2/BNC
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Use the BNC port (default).
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.It 10base5/AUI
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.Bl -tag -width xxxxxxxxxx -offset indent
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.It 10base2
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Use the 10base-2 BNC port.
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.It AUI
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Use the AUI port.
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.It 10baseT/UTP
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Use the UTP port.
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.It 10baseT
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Use the UTP port in 10base-T mode.
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.It 100baseTX
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Use the builtin 100base-Tx PHY on the UTP port.
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.It 100baseFX
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Use the builtin 100mbit fibre-optic PHY.
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.It 100baseT4
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Use the builtin 100base-T4 PHY on the UTP port.
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.El
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The
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.Nm
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driver no longer supports changing media via the link0/link1/link2 flags.
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.Pp
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If there are multiple cards in the computer, they are searched for
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in the following order:
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@ -128,39 +144,12 @@ This is an example of how they will probe:
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ep0 at isa0 port 0x6000-0x600f irq 10: aui/bnc address 00:60:8c:70:e5:c5
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ep1 at isa0 port 0x300-0x30f irq 3: aui/bnc/utp address 00:20:af:10:62:ab
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.Pp
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You may specify the port and irq numbers that the cards are expected
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You may specify the port and irq numbers that ISA cards are expected
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to be found at, but it is not necessary.
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The cards are sufficiently intelligent to tell us where they
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actually live on the ISA bus.
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.Pp
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Some models of 3c5x9 have all three connectors on them.
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In the case of these cards; you must configure the transceiver type
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with the 3Com supplied DOS configuration disk before the link0/link1
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flags will operate correctly. (This is a bug).
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.Pp
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.Sh 100MBIT MEDIA SELECTION
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Supported 100Mbit Ethernet media include:
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.Pp
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.Bl -tag -width xxxxxxxxxxxxxxxx
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.It 100baseTX
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100Mbit Ethernet over Cat-5 unshielded twisted pair
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.It 100baseFX
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100Mbit Ethernet over fibre-optic media
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.It 100baseT4
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100Mbit Ethernet over all four pairs of Cat-3 UTP
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.It MII
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Media Independent Interface connector.
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.El
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.Pp
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.Xr ifconfig 8
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does not properly support selecting 100Mbit media. To
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change media, you must configure the desired media with the 3Com
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supplied DOS configuration disk before booting or installing NetBSD.
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Set the media you want to use as the default in the config utility.
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Even then, the link0/link1 flags will have no effect on 100Mbit cards.
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.Sh NOTES
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The 3c509 card has no jumpers to set the address.
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Etherlink III cards have no jumpers to set the address.
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3Com supplies software to set the address of the card in software.
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To find the card on the ISA bus, the kernel performs a complex
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scan operation at IO address 0x100.
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@ -168,12 +157,12 @@ Beware!
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Avoid placing other cards at that address!
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.Pp
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The 3Com configuration utilities can `autosense' the active media and
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save it as default. The saved default medium is the media active at
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the time the configuration utility was run. The
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save it as default. The saved default medium is the medium that
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was active atthe time the configuration utility was run. The
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.Nm ep
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driver does not yet re-autosense the active media at boot time;
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it simply uses the media type sensed and saved when the configuration
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utility was run.
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driver does not yet re-autosense the active media at boot time.
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If the EEPROM autosense bit is set, the driver simply uses the media
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type sensed and saved when the configuration utility was run.
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.Sh DIAGNOSTICS
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ep0: reset (status: %x)
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.in +4
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@ -190,19 +179,17 @@ This means that someone has scribbled with pencil in the test area on the
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card. Erase the pencil mark and reboot. (This is not a joke).
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.in -4
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.Sh BUGS
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.Xr ifconfig 8
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and the link0/link1/link2 interface flags need to be extended to handle
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the four additional media types available with Fast (100Mbit)
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Ethernet.
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The requirement to pre-configure combo cards should be removed.
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Support for autosensing the active media should be added to the driver.
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.Sh SEE ALSO
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.Xr ifconfig 8 ,
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.Xr intro 4 ,
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.Xr isa 4 ,
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.Xr isapnp 4 ,
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.Xr eisa 4 ,
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.Xr pci 4
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.Xr ed 4 ,
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.Xr eg 4 ,
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.Xr el 4 ,
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.Xr ie 4 ,
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.Xr le 4
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.Xr ie 4 .
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.Sh STANDARDS
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are great. There's so many to choose from.
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