Message ID | 20200826112333.139387358@linutronix.de (mailing list archive) |
---|---|
State | New, archived |
Headers | show
Return-Path: <SRS0=oDxe=CE=lists.xenproject.org=xen-devel-bounces@kernel.org> Received: from mail.kernel.org (pdx-korg-mail-1.web.codeaurora.org [172.30.200.123]) by pdx-korg-patchwork-2.web.codeaurora.org (Postfix) with ESMTP id 64277913 for <patchwork-xen-devel@patchwork.kernel.org>; Wed, 26 Aug 2020 12:03:02 +0000 (UTC) Received: from lists.xenproject.org (lists.xenproject.org [192.237.175.120]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPS id 404CC2087D for <patchwork-xen-devel@patchwork.kernel.org>; Wed, 26 Aug 2020 12:03:02 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (2048-bit key) header.d=linutronix.de header.i=@linutronix.de header.b="AFAYy1AZ"; dkim=permerror (0-bit key) header.d=linutronix.de header.i=@linutronix.de header.b="u2ouyFH0" DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org 404CC2087D Authentication-Results: mail.kernel.org; dmarc=fail (p=none dis=none) header.from=linutronix.de Authentication-Results: mail.kernel.org; spf=pass smtp.mailfrom=xen-devel-bounces@lists.xenproject.org Received: from localhost ([127.0.0.1] helo=lists.xenproject.org) by lists.xenproject.org with esmtp (Exim 4.92) (envelope-from <xen-devel-bounces@lists.xenproject.org>) id 1kAu7S-0008RO-Rm; Wed, 26 Aug 2020 12:01:34 +0000 Received: from all-amaz-eas1.inumbo.com ([34.197.232.57] helo=us1-amaz-eas2.inumbo.com) by lists.xenproject.org with esmtp (Exim 4.92) (envelope-from <SRS0=LG6r=CE=linutronix.de=tglx@srs-us1.protection.inumbo.net>) id 1kAu7S-00083C-B6 for xen-devel@lists.xenproject.org; Wed, 26 Aug 2020 12:01:34 +0000 X-Inumbo-ID: 63b71c43-fa07-467d-990c-c3bb59609121 Received: from galois.linutronix.de (unknown [193.142.43.55]) by us1-amaz-eas2.inumbo.com (Halon) with ESMTPS id 63b71c43-fa07-467d-990c-c3bb59609121; Wed, 26 Aug 2020 12:01:27 +0000 (UTC) Message-Id: <20200826112333.139387358@linutronix.de> DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=linutronix.de; s=2020; t=1598443286; h=from:from:reply-to:subject:subject:date:date:message-id:message-id: to:to:cc:cc:mime-version:mime-version:content-type:content-type: content-transfer-encoding:content-transfer-encoding: references:references; bh=+WzR5MCuCex7ytf6rjsXfS+TP5lRyvSEuqbO3kY2ypY=; b=AFAYy1AZODdBAXiQF7D/2Af8hjoA4F8whD1dpfxhZK0wDTkBf3sx/VW4O7HKpqAFQF6LfQ XqAnO4Jday9Dy+ZAnDZuaZIcexHC5k39FSw5iwposD/R9Hh5EubsWwJv9/VREawRgyHgD0 CJrI9TXEVoVnmeZEEdDR73bytPy2vid/IRs7h2lro8AX8dn3PHz6Up96z37+dXPCe9s8FO Jbf8kKTgVcXc0g9b3oirnxBiTzC21Iy1eeEsFbcC6bnLXB7fls4O14ynXejBtmZBynS/cT nqFa+ajT5XGYIQYNicdr9NM1gu9bnuAyf5ubP6NEsBw3LzgzK18Bvd4eQmq+Dg== DKIM-Signature: v=1; a=ed25519-sha256; c=relaxed/relaxed; d=linutronix.de; s=2020e; t=1598443286; h=from:from:reply-to:subject:subject:date:date:message-id:message-id: to:to:cc:cc:mime-version:mime-version:content-type:content-type: content-transfer-encoding:content-transfer-encoding: references:references; bh=+WzR5MCuCex7ytf6rjsXfS+TP5lRyvSEuqbO3kY2ypY=; b=u2ouyFH0DTUgP45ogWuZh8vqAlI+1eKXuHYVXRV5MEZcJUmzJuBp+ygWAV3omQ2ec9yiFP sQTZJqjSD3yBN0Dw== Date: Wed, 26 Aug 2020 13:16:53 +0200 From: Thomas Gleixner <tglx@linutronix.de> To: LKML <linux-kernel@vger.kernel.org> Cc: x86@kernel.org, Joerg Roedel <joro@8bytes.org>, iommu@lists.linux-foundation.org, linux-hyperv@vger.kernel.org, Haiyang Zhang <haiyangz@microsoft.com>, Jon Derrick <jonathan.derrick@intel.com>, Lu Baolu <baolu.lu@linux.intel.com>, Wei Liu <wei.liu@kernel.org>, "K. Y. Srinivasan" <kys@microsoft.com>, Stephen Hemminger <sthemmin@microsoft.com>, Steve Wahl <steve.wahl@hpe.com>, Dimitri Sivanich <sivanich@hpe.com>, Russ Anderson <rja@hpe.com>, linux-pci@vger.kernel.org, Bjorn Helgaas <bhelgaas@google.com>, Lorenzo Pieralisi <lorenzo.pieralisi@arm.com>, Konrad Rzeszutek Wilk <konrad.wilk@oracle.com>, xen-devel@lists.xenproject.org, Juergen Gross <jgross@suse.com>, Boris Ostrovsky <boris.ostrovsky@oracle.com>, Stefano Stabellini <sstabellini@kernel.org>, Marc Zyngier <maz@kernel.org>, Greg Kroah-Hartman <gregkh@linuxfoundation.org>, "Rafael J. Wysocki" <rafael@kernel.org>, Megha Dey <megha.dey@intel.com>, Jason Gunthorpe <jgg@mellanox.com>, Dave Jiang <dave.jiang@intel.com>, Alex Williamson <alex.williamson@redhat.com>, Jacob Pan <jacob.jun.pan@intel.com>, Baolu Lu <baolu.lu@intel.com>, Kevin Tian <kevin.tian@intel.com>, Dan Williams <dan.j.williams@intel.com> Subject: [patch V2 25/46] PCI/MSI: Provide pci_dev_has_special_msi_domain() helper References: <20200826111628.794979401@linutronix.de> MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-transfer-encoding: 8-bit X-BeenThere: xen-devel@lists.xenproject.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: Xen developer discussion <xen-devel.lists.xenproject.org> List-Unsubscribe: <https://lists.xenproject.org/mailman/options/xen-devel>, <mailto:xen-devel-request@lists.xenproject.org?subject=unsubscribe> List-Post: <mailto:xen-devel@lists.xenproject.org> List-Help: <mailto:xen-devel-request@lists.xenproject.org?subject=help> List-Subscribe: <https://lists.xenproject.org/mailman/listinfo/xen-devel>, <mailto:xen-devel-request@lists.xenproject.org?subject=subscribe> Errors-To: xen-devel-bounces@lists.xenproject.org Sender: "Xen-devel" <xen-devel-bounces@lists.xenproject.org> |
Series |
x86, PCI, XEN, genirq ...: Prepare for device MSI
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--- a/drivers/pci/msi.c +++ b/drivers/pci/msi.c @@ -1553,4 +1553,26 @@ struct irq_domain *pci_msi_get_device_do DOMAIN_BUS_PCI_MSI); return dom; } + +/** + * pci_dev_has_special_msi_domain - Check whether the device is handled by + * a non-standard PCI-MSI domain + * @pdev: The PCI device to check. + * + * Returns: True if the device irqdomain or the bus irqdomain is + * non-standard PCI/MSI. + */ +bool pci_dev_has_special_msi_domain(struct pci_dev *pdev) +{ + struct irq_domain *dom = dev_get_msi_domain(&pdev->dev); + + if (!dom) + dom = dev_get_msi_domain(&pdev->bus->dev); + + if (!dom) + return true; + + return dom->bus_token != DOMAIN_BUS_PCI_MSI; +} + #endif /* CONFIG_PCI_MSI_IRQ_DOMAIN */ --- a/include/linux/msi.h +++ b/include/linux/msi.h @@ -374,6 +374,7 @@ int pci_msi_domain_check_cap(struct irq_ struct msi_domain_info *info, struct device *dev); u32 pci_msi_domain_get_msi_rid(struct irq_domain *domain, struct pci_dev *pdev); struct irq_domain *pci_msi_get_device_domain(struct pci_dev *pdev); +bool pci_dev_has_special_msi_domain(struct pci_dev *pdev); #else static inline struct irq_domain *pci_msi_get_device_domain(struct pci_dev *pdev) {