From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S265937AbUAHSQ2 (ORCPT ); Thu, 8 Jan 2004 13:16:28 -0500 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S265939AbUAHSQ2 (ORCPT ); Thu, 8 Jan 2004 13:16:28 -0500 Received: from 216-229-91-229-empty.fidnet.com ([216.229.91.229]:62980 "EHLO mail.icequake.net") by vger.kernel.org with ESMTP id S265937AbUAHSQS (ORCPT ); Thu, 8 Jan 2004 13:16:18 -0500 Date: Thu, 8 Jan 2004 12:16:16 -0600 From: Ryan Underwood To: linux-kernel@vger.kernel.org Subject: PCI parport irq sharing? Message-ID: <20040108181615.GA20930@dbz.icequake.net> Mime-Version: 1.0 Content-Type: multipart/signed; micalg=pgp-sha1; protocol="application/pgp-signature"; boundary="WIyZ46R2i8wDzkSu" Content-Disposition: inline User-Agent: Mutt/1.5.5.1+cvs20040105i Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org --WIyZ46R2i8wDzkSu Content-Type: text/plain; charset=iso-8859-1 Content-Disposition: inline Content-Transfer-Encoding: quoted-printable Hi, Does parport_pc have the capability to share IRQs? I have a PCI parallel card with two ports on it: parport0: PC-style at 0x3bc (0x7bc), irq 7, dma 3 [PCSPP,TRISTATE,COMPAT,EC= P,DMA] parport1: PC-style at 0xc400 (0xc800), irq 9, using FIFO [PCSPP,TRISTATE,CO= MPAT,ECP] parport1: irq 9 in use, resorting to polled operation parport2: PC-style at 0xcc00 (0xd000) [PCSPP,TRISTATE] parport0 is the mb's builtin parallel port, and parport1/parport2 are the two ports on the PCI card. IRQ 9 is taken by USB already. But since it's a modern PCI card, it would stand to reason that it should be able to share the IRQ with another PCI device, no? Unfortunately, my application requires interrupt-driven operation. /proc/interrupts: CPU0 =20 0: 276501 XT-PIC timer 1: 1196 XT-PIC keyboard 2: 0 XT-PIC cascade 7: 7 XT-PIC parport0 8: 4 XT-PIC rtc 9: 2724988 XT-PIC acpi, usb-ohci 10: 8745 XT-PIC eth0 11: 0 XT-PIC CMI8738-MC4 12: 0 XT-PIC PS/2 Mouse 14: 16219 XT-PIC ide0 15: 29 XT-PIC ide1 NMI: 0=20 LOC: 0=20 ERR: 0 MIS: 0 Kernel 2.4.24 thanks, --=20 Ryan Underwood, --WIyZ46R2i8wDzkSu Content-Type: application/pgp-signature; name="signature.asc" Content-Description: Digital signature Content-Disposition: inline -----BEGIN PGP SIGNATURE----- Version: GnuPG v1.2.4 (GNU/Linux) iD8DBQE//Z5vIonHnh+67jkRAoqrAJ9bR+yBS0X6ycb5qOwnTYXwF8fBwQCfcSVY JmhWRDKx9JARIdfUpy80jik= =a29J -----END PGP SIGNATURE----- --WIyZ46R2i8wDzkSu--