From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1752945AbXCaLgp (ORCPT ); Sat, 31 Mar 2007 07:36:45 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1752960AbXCaLgp (ORCPT ); Sat, 31 Mar 2007 07:36:45 -0400 Received: from mx.laposte.net ([81.255.54.16]:52526 "EHLO mx.laposte.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1752945AbXCaLgo (ORCPT ); Sat, 31 Mar 2007 07:36:44 -0400 Subject: Re: [PATCH 1/5] RT kernel: force detect HPET from PCI space From: Nicolas Mailhot To: Krzysztof Halasa Cc: Mikko Tiihonen , linux-kernel@vger.kernel.org, ranma@tdiedrich.de, om.turyx@gmail.com In-Reply-To: References: <1175294288.32441.6.camel@rousalka.dyndns.org> Content-Type: multipart/signed; micalg=pgp-sha1; protocol="application/pgp-signature"; boundary="=-HGtWM+8CkR7eN9QAuh2o" Organization: Adresse perso Date: Sat, 31 Mar 2007 13:36:26 +0200 Message-Id: <1175340987.4174.9.camel@rousalka.dyndns.org> Mime-Version: 1.0 X-Mailer: Evolution 2.10.0 (2.10.0-5.fc7) Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org --=-HGtWM+8CkR7eN9QAuh2o Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: quoted-printable [adding some people in CC that expressed interest in the problem before] Le samedi 31 mars 2007 =C3=A0 12:37 +0200, Krzysztof Halasa a =C3=A9crit : > Nicolas Mailhot writes: >=20 > > Oh, is looks so close to my system > > > > 00:01.0 ISA bridge: nVidia Corporation CK804 ISA Bridge (rev a3) > > 00: de 10 50 00 0f 00 a0 00 a3 00 01 06 00 00 80 00 > > 10: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 > > 20: 00 00 00 00 00 00 00 00 00 00 00 00 58 14 11 0c > > 30: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 > > 40: 58 14 11 0c 00 f0 ff fe fa 3e ff 00 fa 3e ff 00 > > ^^^^^^^^^^^ > > Usual HPET base address > > 50: fa 3e ff 00 00 5a 62 02 00 00 00 01 00 00 ff ff > > 60: 01 10 00 00 01 14 00 00 01 18 00 00 00 00 f9 ff > > 70: 10 00 ff ff c1 00 00 00 00 00 04 19 18 d2 80 0d > > ^^ > > c1 =3D> HPET disabled (according to your reference) > > > > I don't have an HPET toggle in my bios >=20 > For reference: HPET enabled in BIOS, MSI K9N platinum board: >=20 > dmesg | grep HPET > ACPI: HPET (v001 A M I OEMHPET0 0x02000701 MSFT 0x00000097) > @ 0x000000003ffd5480 > ACPI: HPET id: 0x10de8201 base: 0xfed00000 > time.c: Using 25.000000 MHz WALL HPET GTOD HPET timer. >=20 > 00:01.0 ISA bridge: nVidia Corporation MCP55 LPC Bridge (rev a2) > Subsystem: Micro-Star International Co., Ltd. Unknown device 7250 > Flags: bus master, 66MHz, fast devsel, latency 0 > I/O ports at 2f00 [size=3D128] > 00: de 10 62 03 0f 00 a0 00 a2 00 01 06 00 00 80 00 > 10: 01 2f 00 00 00 00 00 00 00 00 00 00 00 00 00 00 > 20: 00 00 00 00 00 00 00 00 00 00 00 00 62 14 50 72 > 30: 00 00 00 00 00 00 00 00 00 00 00 00 ff 00 00 00 > 40: 62 14 50 72 00 00 d0 fe fa 3e ff 00 fa 3e ff 00 > ^^^^^^^^^^^ > Dword at 0x44 indeed seems to be the address >=20 > 50: fa 3e ff 00 00 5a 62 02 00 00 00 01 00 00 fe 3f > 60: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 f9 ff > 70: 10 00 ff ff c5 80 00 00 00 00 45 19 00 c6 40 00 > ^^ > Enabled =3D consistent with http://lkml.org/lkml/2006/12/17/69 >=20 > 80: 09 20 00 10 1d 08 00 00 f0 00 00 01 f0 00 00 00 > 90: 00 08 00 00 00 00 00 00 21 47 95 86 ef cd ab 00 > a0: 01 00 00 81 00 00 00 00 00 00 00 00 00 00 00 00 > ^^ > Not sure about 0xa3, though. >=20 > b0: 00 00 00 00 00 0a 7f 0a 00 00 00 00 00 00 00 00 > c0: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 > d0: 00 00 00 00 00 00 00 00 44 00 00 fe fd d3 00 a0 > e0: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 > f0: 00 00 00 00 00 00 00 00 10 00 00 00 00 00 00 00 Here is the full reference on my system 00:01.0 ISA bridge: nVidia Corporation CK804 ISA Bridge (rev a3) Subsystem: Giga-byte Technology GA-K8N Ultra-9 Mainboard Control: I/O+ Mem+ BusMaster+ SpecCycle+ MemWINV- VGASnoop- ParErr- Stepping- SERR- FastB2B- Status: Cap- 66MHz+ UDF- FastB2B+ ParErr- DEVSEL=3Dfast >TAbort- SERR-