From: Rick Jones <rick.jones2@hp.com>
To: Ben Greear <greearb@candelatech.com>
Cc: NetDev <netdev@vger.kernel.org>
Subject: Re: 2.6.16.13 e1000 reports incorrect PCI-X bus speed?
Date: Fri, 12 May 2006 14:41:01 -0700 [thread overview]
Message-ID: <446500ED.6040002@hp.com> (raw)
In-Reply-To: <4464FB01.6070206@candelatech.com>
Ben Greear wrote:
> I'm running a slightly modified 2.6.16.13 kernel on FC5-amd64. The
> motherboard
> is SuperMicro H8SSL dual-core AMD system. According to super-micro web
> site,
> the PCI-X slot is 133Mhz. I'm using a 4-port pro/1000 NIC.
>
> dmesg shows a listing of 120Mhz:
IIRC there is a bridge chip on those four-port cards. Perhaps the
"north" side of the bridge is at 133 MHz, but the south side (since it
is more than one load) is only 120?
> Intel(R) PRO/1000 Network Driver - version 6.3.9-k4-NAPI
> Copyright (c) 1999-2005 Intel Corporation.
> GSI 18 sharing vector 0xB9 and IRQ 18
> ACPI: PCI Interrupt 0000:03:04.0[A] -> GSI 20 (level, low) -> IRQ 18
> e1000: 0000:03:04.0: e1000_probe: (PCI-X:120MHz:64-bit) 00:04:23:ad:41:bc
> e1000: eth2: e1000_probe: Intel(R) PRO/1000 Network Connection
> GSI 19 sharing vector 0xC1 and IRQ 19
> ACPI: PCI Interrupt 0000:03:04.1[B] -> GSI 21 (level, low) -> IRQ 19
> e1000: 0000:03:04.1: e1000_probe: (PCI-X:120MHz:64-bit) 00:04:23:ad:41:bd
> e1000: eth3: e1000_probe: Intel(R) PRO/1000 Network Connection
> GSI 20 sharing vector 0xC9 and IRQ 20
> ACPI: PCI Interrupt 0000:03:06.0[A] -> GSI 22 (level, low) -> IRQ 20
> e1000: 0000:03:06.0: e1000_probe: (PCI-X:120MHz:64-bit) 00:04:23:ad:41:be
> e1000: eth4: e1000_probe: Intel(R) PRO/1000 Network Connection
> GSI 21 sharing vector 0xD1 and IRQ 21
> ACPI: PCI Interrupt 0000:03:06.1[B] -> GSI 23 (level, low) -> IRQ 21
> e1000: 0000:03:06.1: e1000_probe: (PCI-X:120MHz:64-bit) 00:04:23:ad:41:bf
> e1000: eth5: e1000_probe: Intel(R) PRO/1000 Network Connection
>
> ethtool -d eth3 shows 66Mhz:
> ....
> 0x00008: STATUS (Device status register) 0x00003B87
> Duplex: full
> Link up: link config
> TBI mode: disabled
> Link speed: 1000Mb/s
> Bus type: PCI-X
> Bus speed: 66MHz
> Bus width: 64-bit
>
> Any idea why I see the slower bus speed reported?
That one though escapes me.
rick jones
>
> More info available as needed.
>
> Thanks,
> Ben
>
prev parent reply other threads:[~2006-05-12 21:41 UTC|newest]
Thread overview: 5+ messages / expand[flat|nested] mbox.gz Atom feed top
2006-05-12 21:15 2.6.16.13 e1000 reports incorrect PCI-X bus speed? Ben Greear
2006-05-12 21:33 ` Auke Kok
2006-05-12 22:26 ` Ben Greear
2006-05-14 0:54 ` Chris Leech
2006-05-12 21:41 ` Rick Jones [this message]
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