From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from vega.surpasshosting.com (vega.surpasshosting.com [72.29.83.9]) (using TLSv1 with cipher DHE-RSA-AES256-SHA (256/256 bits)) (Client did not present a certificate) by ozlabs.org (Postfix) with ESMTPS id 6C226B6F08 for ; Thu, 17 Dec 2009 19:56:26 +1100 (EST) Message-ID: <4B29F23A.9070001@embedded-sol.com> Date: Thu, 17 Dec 2009 10:56:26 +0200 From: Felix Radensky MIME-Version: 1.0 To: Mahajan Vivek-B08308 Subject: Re: Problem with mini-PCI-E slot on P2020RDB References: <4B27FEE3.80001@embedded-sol.com> <0949C49693EF1A47A54B0F0113CDB4A607674F@zin33exm23.fsl.freescale.net> <4B28A7C3.6040209@embedded-sol.com> <0949C49693EF1A47A54B0F0113CDB4A6076776@zin33exm23.fsl.freescale.net> <4B28CBC4.4010501@embedded-sol.com><0949C49693EF1A47A54B0F0113CDB4A6076791@zin33exm23.fsl.freescale.net> <4B29DC2B.8090405@embedded-sol.com> <0949C49693EF1A47A54B0F0113CDB4A60767E8@zin33exm23.fsl.freescale.net> In-Reply-To: <0949C49693EF1A47A54B0F0113CDB4A60767E8@zin33exm23.fsl.freescale.net> Content-Type: text/plain; charset=ISO-8859-1; format=flowed Cc: linuxppc-dev@ozlabs.org, Aggrwal Poonam-B10812 List-Id: Linux on PowerPC Developers Mail List List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Mahajan Vivek-B08308 wrote: >> From: >> linuxppc-dev-bounces+vivek.mahajan=freescale.com@lists.ozlabs. >> org >> [mailto:linuxppc-dev-bounces+vivek.mahajan=freescale.com@lists >> .ozlabs.org] On Behalf Of Felix Radensky >> Sent: Thursday, December 17, 2009 12:52 PM >> >>> I just noticed a MSI enable bit in >>> drivers/net/wireless/ath/ath9k/reg.h >>> as under, may be we need to trun this on:- >>> >>> reg.h:1013:#define AR_PCIE_MSI 0x4094 >>> reg.h:1014:#define AR_PCIE_MSI_ENABLE >>> >> 0x00000001 >> >>> >>> >> According to ath9k developers adding MSI support to the >> driver is not trivial. >> They've tried once, it didn't work and they gave up. Any >> chance I can use mini-PCI-E slot without MSI ? >> > > So, even after enabling the above bit, there were no MSI > interrupts from this card. If we look at some of the GbE > or SATA drivers, adding MSI is not that hard. ath9k can > be an exception. > Yes, I've enabled that bit, but didn't get any interrupt. > I reported this issue to the p2020 board designer; but > unfortunately he is out until 1/4/10. It could be a missing > pull-up issue at IRQ0 or some thing else, I don't know. > > Thanks a lot. If I understand you correctly, the only way I can get ath9k driver to work on this board using legacy interrupts is to wait for a hardware fix. Right ? Felix.