From mboxrd@z Thu Jan 1 00:00:00 1970 From: Ben Greear Subject: 2.6.16.13 e1000 reports incorrect PCI-X bus speed? Date: Fri, 12 May 2006 14:15:45 -0700 Message-ID: <4464FB01.6070206@candelatech.com> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii; format=flowed Content-Transfer-Encoding: 7bit Return-path: Received: from ns2.lanforge.com ([66.165.47.211]:57795 "EHLO ns2.lanforge.com") by vger.kernel.org with ESMTP id S1750803AbWELVPr (ORCPT ); Fri, 12 May 2006 17:15:47 -0400 Received: from [71.112.206.236] (pool-71-112-206-236.sttlwa.dsl-w.verizon.net [71.112.206.236]) (authenticated bits=0) by ns2.lanforge.com (8.13.4/8.13.4) with ESMTP id k4CLFk8x010432 for ; Fri, 12 May 2006 14:15:46 -0700 To: NetDev Sender: netdev-owner@vger.kernel.org List-Id: netdev.vger.kernel.org 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: 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? More info available as needed. Thanks, Ben -- Ben Greear Candela Technologies Inc http://www.candelatech.com