From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from foss.arm.com ([217.140.101.70]:59068 "EHLO foss.arm.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S932262AbbG1Nqk (ORCPT ); Tue, 28 Jul 2015 09:46:40 -0400 From: Marc Zyngier To: Bjorn Helgaas , Thomas Gleixner , Jiang Liu , Jason Cooper Cc: Hanjun Guo , , , , Yijing Wang , Ma Jun , Lorenzo Pieralisi , Duc Dang Subject: [PATCH v6 03/19] device core: Introduce per-device MSI domain pointer Date: Tue, 28 Jul 2015 14:46:10 +0100 Message-Id: <1438091186-10244-4-git-send-email-marc.zyngier@arm.com> In-Reply-To: <1438091186-10244-1-git-send-email-marc.zyngier@arm.com> References: <1438091186-10244-1-git-send-email-marc.zyngier@arm.com> Sender: linux-pci-owner@vger.kernel.org List-ID: As MSI-type features are creeping into non-PCI devices, it is starting to make sense to give our struct device some form of support for this, by allowing a pointer to an MSI irq domain to be set/retrieved. Reviewed-by: Hanjun Guo Signed-off-by: Marc Zyngier --- include/linux/device.h | 20 ++++++++++++++++++++ 1 file changed, 20 insertions(+) diff --git a/include/linux/device.h b/include/linux/device.h index 22227e7..6d6f2d7 100644 --- a/include/linux/device.h +++ b/include/linux/device.h @@ -714,6 +714,7 @@ struct device_dma_parameters { * @pins: For device pin management. * See Documentation/pinctrl.txt for details. * @msi_list: Hosts MSI descriptors + * @msi_domain: The generic MSI domain this device is using. * @numa_node: NUMA node this device is close to. * @dma_mask: Dma mask (if dma'ble device). * @coherent_dma_mask: Like dma_mask, but for alloc_coherent mapping as not all @@ -774,6 +775,9 @@ struct device { struct dev_pm_info power; struct dev_pm_domain *pm_domain; +#ifdef CONFIG_GENERIC_MSI_IRQ_DOMAIN + struct irq_domain *msi_domain; +#endif #ifdef CONFIG_PINCTRL struct dev_pin_info *pins; #endif @@ -864,6 +868,22 @@ static inline void set_dev_node(struct device *dev, int node) } #endif +static inline struct irq_domain *dev_get_msi_domain(const struct device *dev) +{ +#ifdef CONFIG_GENERIC_MSI_IRQ_DOMAIN + return dev->msi_domain; +#else + return NULL; +#endif +} + +static inline void dev_set_msi_domain(struct device *dev, struct irq_domain *d) +{ +#ifdef CONFIG_GENERIC_MSI_IRQ_DOMAIN + dev->msi_domain = d; +#endif +} + static inline void *dev_get_drvdata(const struct device *dev) { return dev->driver_data; -- 2.1.4