From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from smtp.kernel.org (aws-us-west-2-korg-mail-1.web.codeaurora.org [10.30.226.201]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 040D71BA88A for ; Thu, 29 Aug 2024 22:00:07 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=10.30.226.201 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1724968808; cv=none; b=ACXmQ8g46X6uiPS++kKKcHVOFH2n9rL1NiRFA6yAC5AVqlvgO9A13t5vO7Ot1k8jIkt+7fekPgduXrduE1vHEtyyFWa/Koz+mFDmw/7+Jyu2n3z0vV1/60DSrgIuGQrbyVa5nPH4AgY9m+ezGnzc8noCzbQFJOUyRbRIdT4791g= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1724968808; c=relaxed/simple; bh=RTPquxCeVcldP0kpJCII9mG/YEP/cKMoCEHAcw9aoZU=; h=Date:From:To:Cc:Subject:Message-ID:MIME-Version:Content-Type: Content-Disposition:In-Reply-To; b=UHxU4mHvat8wqP74WibmOM5tVVhpF5jOGT9cWw7lhBEUMDh1F95qlSzHiohNFn5k1UD15PsXS4XjiD/E4nCdxFhYsZE6TH9mKisN0piiFH2VqQZvEZ+YFfVHY/Qkeryn/PLLLWuCcVKcLvBRGuim70MRxv+BZUaQ6qN86I0MaKQ= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b=MB2QPmFX; arc=none smtp.client-ip=10.30.226.201 Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b="MB2QPmFX" Received: by smtp.kernel.org (Postfix) with ESMTPSA id 560BAC4CEC2; Thu, 29 Aug 2024 22:00:07 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1724968807; bh=RTPquxCeVcldP0kpJCII9mG/YEP/cKMoCEHAcw9aoZU=; h=Date:From:To:Cc:Subject:In-Reply-To:From; b=MB2QPmFXowkYSkLNmrA3CCVPDO2W4IOxj9T7vXZgQYJVG+rZiiwJlV5zz1LBq/Q2R AB+1L2Wo8MHZQRaZJCcabGDsNglkU/1SLyxpeqDUJLw8x27NXlipwvUa6xa0ds/d/b Nt9KrvYnxtQCH2y4x6UhlY7SZzYdlj0vODJETXbF5mZZWNPHjwlS9acJMPxK/mQKRG hdsDRa1HT/u2RWmkuf3cDgHi+AyaLDJKbqDjXpIVBR+BzkWcC5l+t/xeOcxb9vmEZN 1cxZnJ2yF1baw03/Gg5oJzn6vrWSeAn0rmd+J4gjk8mcoqQL8ddp5JeSzQgQUtDoxN LD8A4XQFqOMYg== Date: Thu, 29 Aug 2024 17:00:05 -0500 From: Bjorn Helgaas To: Frank Li Cc: Tim Harvey , Richard Zhu , Lucas Stach , linux-pci@vger.kernel.org Subject: Re: legacy PCI device behind a bridge not getting a valid IRQ on imx host controller Message-ID: <20240829220005.GA81596@bhelgaas> Precedence: bulk X-Mailing-List: linux-pci@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: On Thu, Aug 29, 2024 at 05:43:42PM -0400, Frank Li wrote: > On Thu, Aug 29, 2024 at 04:22:35PM -0500, Bjorn Helgaas wrote: > > On Wed, Aug 28, 2024 at 02:40:33PM -0700, Tim Harvey wrote: > > > Greetings, > > > > > > I have a user that is using an IMX8MM SoC (dwc controller) with a > > > miniPCIe card that has a PEX8112 PCI-to-PCIe bridge to a legacy PCI > > > device and the device is not getting a valid interrupt. > > > > Does pci-imx6.c support INTx at all? > > Yes, dwc controller map INTx message to 4 irq lines, which connect to GIC. > we tested it by add nomsi in kernel command line. Thanks, Frank. Can you point me to the dwc code where this happens? Maybe I can remember this for next time or add a comment to help people find it. Bjorn