From mboxrd@z Thu Jan 1 00:00:00 1970 From: Dominik Brodowski Subject: Re: not all irqs detected Date: Sat, 24 Aug 2002 20:05:11 +0200 Sender: acpi-devel-admin-5NWGOfrQmneRv+LV9MX5uipxlwaOVQ5f@public.gmane.org Message-ID: <20020824200511.G587@brodo.de> References: <200208241717.g7OHH1X19234@mailgate5.cinetic.de> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Return-path: Content-Disposition: inline In-Reply-To: <200208241717.g7OHH1X19234-pb599fR3TxVkExQqqHjIK3sFFmKitW5W@public.gmane.org>; from joerg.beyer-htSm2yLGOjU@public.gmane.org on Sat, Aug 24, 2002 at 07:17:01PM +0200 Errors-To: acpi-devel-admin-5NWGOfrQmneRv+LV9MX5uipxlwaOVQ5f@public.gmane.org List-Help: List-Post: List-Subscribe: , List-Unsubscribe: , List-Archive: To: joerg.beyer-htSm2yLGOjU@public.gmane.org Cc: acpilist List-Id: linux-acpi@vger.kernel.org On Sat, Aug 24, 2002 at 07:17:01PM +0200, joerg.beyer-htSm2yLGOjU@public.gmane.org wrote: > My bios has not many things to adjust, but I can disable the > psaux (mouse) and the bios says, if I disable psaux, then irq 12 > will be available. I attached a dmesg, with disabled psaux, and > I would expect to see IRQ 12 used - but it isn't. > > could anybody tell me, if it is correct to expect IRQ 12 used this > way? It _may_ be available for other, i.e. PCI users then. > > I tried to read & understand the driver/acpi/pci_*.c code, but I need > some help to get started: how are the free/usable IRQs found > and mapped? The usable IRQs are set down in the DSDT table, the Detailed System Description Table (which is more or less fixed in the BIOS). And as all PCI IRQs are expected to be non-exclusive, all should be "free". However, the ACPI code tries to use the available IRQs most effectively. Dominik ------------------------------------------------------- This sf.net email is sponsored by: OSDN - Tired of that same old cell phone? Get a new here for FREE! https://www.inphonic.com/r.asp?r=sourceforge1&refcode1=vs3390