From patchwork Thu May 21 13:00:04 2020 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Lorenzo Pieralisi X-Patchwork-Id: 11562891 Return-Path: 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 4A4F414B7 for ; Thu, 21 May 2020 13:00:43 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 3B44820826 for ; Thu, 21 May 2020 13:00:43 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1729409AbgEUNAm (ORCPT ); Thu, 21 May 2020 09:00:42 -0400 Received: from foss.arm.com ([217.140.110.172]:46178 "EHLO foss.arm.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1729366AbgEUNAj (ORCPT ); Thu, 21 May 2020 09:00:39 -0400 Received: from usa-sjc-imap-foss1.foss.arm.com (unknown [10.121.207.14]) by usa-sjc-mx-foss1.foss.arm.com (Postfix) with ESMTP id E5C3BD6E; Thu, 21 May 2020 06:00:38 -0700 (PDT) Received: from red-moon.arm.com (unknown [10.57.29.145]) by usa-sjc-imap-foss1.foss.arm.com (Postfix) with ESMTPSA id 613513F305; Thu, 21 May 2020 06:00:36 -0700 (PDT) From: Lorenzo Pieralisi To: linux-arm-kernel@lists.infradead.org Cc: Diana Craciun , Lorenzo Pieralisi , Bjorn Helgaas , Rob Herring , Marc Zyngier , iommu@lists.linux-foundation.org, linux-acpi@vger.kernel.org, devicetree@vger.kernel.org, linux-pci@vger.kernel.org, "Rafael J. Wysocki" , Joerg Roedel , Hanjun Guo , Sudeep Holla , Robin Murphy , Catalin Marinas , Will Deacon , Makarand Pawagi , Laurentiu Tudor Subject: [PATCH 08/12] of/irq: make of_msi_map_get_device_domain() bus agnostic Date: Thu, 21 May 2020 14:00:04 +0100 Message-Id: <20200521130008.8266-9-lorenzo.pieralisi@arm.com> X-Mailer: git-send-email 2.26.1 In-Reply-To: <20200521130008.8266-1-lorenzo.pieralisi@arm.com> References: <20200521130008.8266-1-lorenzo.pieralisi@arm.com> MIME-Version: 1.0 Sender: linux-acpi-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-acpi@vger.kernel.org From: Diana Craciun of_msi_map_get_device_domain() is PCI specific but it need not be and can be easily changed to be bus agnostic in order to be used by other busses by adding an IRQ domain bus token as an input parameter. Signed-off-by: Diana Craciun Signed-off-by: Lorenzo Pieralisi Cc: Bjorn Helgaas Cc: Rob Herring Cc: Marc Zyngier Acked-by: Bjorn Helgaas # pci/msi.c --- drivers/of/irq.c | 8 +++++--- drivers/pci/msi.c | 2 +- include/linux/of_irq.h | 5 +++-- 3 files changed, 9 insertions(+), 6 deletions(-) diff --git a/drivers/of/irq.c b/drivers/of/irq.c index a296eaf52a5b..48a40326984f 100644 --- a/drivers/of/irq.c +++ b/drivers/of/irq.c @@ -613,18 +613,20 @@ u32 of_msi_map_rid(struct device *dev, struct device_node *msi_np, u32 rid_in) * of_msi_map_get_device_domain - Use msi-map to find the relevant MSI domain * @dev: device for which the mapping is to be done. * @rid: Requester ID for the device. + * @bus_token: Bus token * * Walk up the device hierarchy looking for devices with a "msi-map" * property. * * Returns: the MSI domain for this device (or NULL on failure) */ -struct irq_domain *of_msi_map_get_device_domain(struct device *dev, u32 rid) +struct irq_domain *of_msi_map_get_device_domain(struct device *dev, u32 id, + u32 bus_token) { struct device_node *np = NULL; - __of_msi_map_rid(dev, &np, rid); - return irq_find_matching_host(np, DOMAIN_BUS_PCI_MSI); + __of_msi_map_rid(dev, &np, id); + return irq_find_matching_host(np, bus_token); } /** diff --git a/drivers/pci/msi.c b/drivers/pci/msi.c index 74a91f52ecc0..9532e1d12d3f 100644 --- a/drivers/pci/msi.c +++ b/drivers/pci/msi.c @@ -1556,7 +1556,7 @@ struct irq_domain *pci_msi_get_device_domain(struct pci_dev *pdev) u32 rid = pci_dev_id(pdev); pci_for_each_dma_alias(pdev, get_msi_id_cb, &rid); - dom = of_msi_map_get_device_domain(&pdev->dev, rid); + dom = of_msi_map_get_device_domain(&pdev->dev, rid, DOMAIN_BUS_PCI_MSI); if (!dom) dom = iort_get_device_domain(&pdev->dev, rid, DOMAIN_BUS_PCI_MSI); diff --git a/include/linux/of_irq.h b/include/linux/of_irq.h index 1214cabb2247..7142a3722758 100644 --- a/include/linux/of_irq.h +++ b/include/linux/of_irq.h @@ -52,7 +52,8 @@ extern struct irq_domain *of_msi_get_domain(struct device *dev, struct device_node *np, enum irq_domain_bus_token token); extern struct irq_domain *of_msi_map_get_device_domain(struct device *dev, - u32 rid); + u32 id, + u32 bus_token); extern void of_msi_configure(struct device *dev, struct device_node *np); u32 of_msi_map_rid(struct device *dev, struct device_node *msi_np, u32 rid_in); #else @@ -85,7 +86,7 @@ static inline struct irq_domain *of_msi_get_domain(struct device *dev, return NULL; } static inline struct irq_domain *of_msi_map_get_device_domain(struct device *dev, - u32 rid) + u32 id, u32 bus_token) { return NULL; }