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From: Marc Zyngier <marc.zyngier@arm.com>
To: Bjorn Helgaas <bhelgaas@google.com>,
	Thomas Gleixner <tglx@linutronix.de>,
	Jiang Liu <jiang.liu@linux.intel.com>
Cc: <linux-arm-kernel@lists.infradead.org>,
	<linux-pci@vger.kernel.org>, <linux-kernel@vger.kernel.org>,
	Yijing Wang <wangyijing@huawei.com>,
	Suravee Suthikulpanit <Suravee.Suthikulpanit@amd.com>
Subject: [PATCH v2 1/8] device core: Introduce per-device MSI domain pointer
Date: Thu,  8 Jan 2015 17:06:05 +0000	[thread overview]
Message-ID: <1420736772-11088-2-git-send-email-marc.zyngier@arm.com> (raw)
In-Reply-To: <1420736772-11088-1-git-send-email-marc.zyngier@arm.com>

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.

Signed-off-by: Marc Zyngier <marc.zyngier@arm.com>
---
 include/linux/device.h | 20 ++++++++++++++++++++
 1 file changed, 20 insertions(+)

diff --git a/include/linux/device.h b/include/linux/device.h
index fb50673..ec4cee5 100644
--- a/include/linux/device.h
+++ b/include/linux/device.h
@@ -690,6 +690,7 @@ struct acpi_dev_node {
  * 		along with subsystem-level and driver-level callbacks.
  * @pins:	For device pin management.
  *		See Documentation/pinctrl.txt for details.
+ * @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
@@ -750,6 +751,9 @@ struct device {
 	struct dev_pm_info	power;
 	struct dev_pm_domain	*pm_domain;
 
+#ifdef CONFIG_GENERIC_MSI_IRQ_DOMAIN
+	struct irq_domain	*msi_domain; /* MSI domain device uses */
+#endif
 #ifdef CONFIG_PINCTRL
 	struct dev_pin_info	*pins;
 #endif
@@ -837,6 +841,22 @@ 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


  reply	other threads:[~2015-01-08 17:06 UTC|newest]

Thread overview: 21+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2015-01-08 17:06 [PATCH v2 0/8] Introducing per-device MSI domain Marc Zyngier
2015-01-08 17:06 ` Marc Zyngier [this message]
2015-01-15 20:35   ` [PATCH v2 1/8] device core: Introduce per-device MSI domain pointer Stuart Yoder
2015-01-16 19:10     ` Marc Zyngier
2015-01-19  2:10     ` Jiang Liu
2015-01-20 17:17       ` Stuart Yoder
2015-01-21  1:34         ` Jiang Liu
2015-01-08 17:06 ` [PATCH v2 2/8] PCI/MSI: Add hooks to populate the msi_domain field Marc Zyngier
2015-01-13 12:34   ` Yijing Wang
2015-01-13 13:45     ` Marc Zyngier
2015-01-14  2:04       ` Yijing Wang
2015-01-14  2:06   ` Yijing Wang
2015-01-08 17:06 ` [PATCH v2 3/8] PCI/MSI: of: Add support for OF-provided msi_domain Marc Zyngier
2015-01-14  8:17   ` Yun Wu (Abel)
2015-01-14 10:19     ` Marc Zyngier
2015-01-08 17:06 ` [PATCH v2 4/8] PCI/MSI: of: Allow msi_domain lookup using the PHB node Marc Zyngier
2015-01-08 17:06 ` [PATCH v2 5/8] PCI/MSI: Let pci_msi_get_domain use struct device's msi_domain Marc Zyngier
2015-01-08 17:06 ` [PATCH v2 6/8] irqchip: GICv2m: Get rid of struct msi_controller Marc Zyngier
2015-01-08 17:06 ` [PATCH v2 7/8] irqchip: gicv3-its: " Marc Zyngier
2015-01-08 17:06 ` [PATCH v2 8/8] PCI/MSI: Drop domain field from msi_controller Marc Zyngier
2015-01-27  0:45 ` [PATCH v2 0/8] Introducing per-device MSI domain Bjorn Helgaas

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