[PATCH 1/6] device core: Introduce per-device MSI domain pointer

From: Marc Zyngier
Date: Mon Dec 08 2014 - 15:14:03 EST

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@xxxxxxx>
include/linux/device.h | 20 ++++++++++++++++++++
1 file changed, 20 insertions(+)

diff --git a/include/linux/device.h b/include/linux/device.h
index ce1f2160..f3aaaf6 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;

+ struct irq_domain *msi_domain; /* MSI domain device uses */
struct dev_pin_info *pins;
@@ -837,6 +841,22 @@ static inline void set_dev_node(struct device *dev, int node)

+static inline struct irq_domain *dev_get_msi_domain(const struct device *dev)
+ return dev->msi_domain;
+ return NULL;
+static inline void dev_set_msi_domain(struct device *dev, struct irq_domain *d)
+ dev->msi_domain = d;
static inline void *dev_get_drvdata(const struct device *dev)
return dev->driver_data;

To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@xxxxxxxxxxxxxxx
More majordomo info at http://vger.kernel.org/majordomo-info.html
Please read the FAQ at http://www.tux.org/lkml/