From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from mail8.fw-sd.sony.com (mail8.fw-sd.sony.com [160.33.66.75]) (using TLSv1 with cipher DHE-RSA-AES256-SHA (256/256 bits)) (Client did not present a certificate) by ozlabs.org (Postfix) with ESMTP id A851A679FB for ; Wed, 10 May 2006 11:28:05 +1000 (EST) Message-ID: <446141A2.9030000@am.sony.com> Date: Tue, 09 May 2006 18:28:02 -0700 From: Geoff Levand MIME-Version: 1.0 To: Benjamin Herrenschmidt Subject: pci_resource_end problem revisited Content-Type: text/plain; charset=UTF-8 Cc: linuxppc-dev@ozlabs.org List-Id: Linux on PowerPC Developers Mail List List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Ben, I still have this problem of OF reporting the serial port bar size as 16 instead of 8 on my G5. Where would be a proper place to fix this? BTW, I verified that it is OF that reports the size as 16. -Geoff -------- Original Message -------- Subject: Re: pci_resource_end() changed problem with 2.6.14 Date: Fri, 04 Nov 2005 10:36:58 -0800 From: Geoff Levand To: Benjamin Herrenschmidt CC: linuxppc64-dev@ozlabs.org References: <436ADBA7.7030706@am.sony.com> <1131087370.4680.238.camel@gaston> Benjamin Herrenschmidt wrote: > On Thu, 2005-11-03 at 19:55 -0800, Geoff Levand wrote: > >>I found that the serial port probe code in drivers/serial/8250_pci.c >>no longer works properly for ppc64 in 2.6.14. It seems the value >>returned by pci_resource_len() on ppc64 changed from 8 to 16 since >>2.6.13. I tested on a PC and pci_resource_len() returns 8 as >>expected. >> > Interesting... What does an lspci -vv shows for the BARs of the PCI > card ? Also, what do you have in /proc/device-tree ? What is the > machine precisely ? > > 2.6.14 now uses the OF device-tree to generate the linux PCI tree > instead of going directly to PCI probing. It's possible that this is > causing your problem if for some reason, the BAR sizing done by OF ends > up being different than what the kernel does ... > Sorry, I should have mentioned it, this is on my PowerMac G5 with a generic 8250 serial PCI card (StarTech PCI4S550N). Here's what lspci gives me: 0001:05:03.0 Serial controller: NetMos Technology PCI 9845 Multi-I/O Controller (rev 01) (prog-if 02 [16550]) Subsystem: LSI Logic / Symbios Logic 0P4S (4 port 16550A serial card) Control: I/O+ Mem- BusMaster- SpecCycle- MemWINV- VGASnoop- ParErr- Stepping- SERR- FastB2B- Status: Cap- 66Mhz- UDF- FastB2B+ ParErr- DEVSEL=medium >TAbort- SERR-