Commit-ID: f1421db8ca4c110144be97a5997ed83d34685db5
Gitweb: http://git.kernel.org/tip/f1421db8ca4c110144be97a5997ed83d34685db5
Author: Marc Zyngier <marc.zyngier@xxxxxxx>
AuthorDate: Tue, 28 Jul 2015 14:46:10 +0100
Committer: Thomas Gleixner <tglx@xxxxxxxxxxxxx>
CommitDate: Thu, 30 Jul 2015 00:14:37 +0200
device core: Introduce per-device MSI domain pointer
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 <hanjun.guo@xxxxxxxxxx>
Signed-off-by: Marc Zyngier <marc.zyngier@xxxxxxx>
Cc: <linux-arm-kernel@xxxxxxxxxxxxxxxxxxx>
Cc: Yijing Wang <wangyijing@xxxxxxxxxx>
Cc: Ma Jun <majun258@xxxxxxxxxx>
Cc: Lorenzo Pieralisi <lorenzo.pieralisi@xxxxxxx>
Cc: Duc Dang <dhdang@xxxxxxx>
Cc: Bjorn Helgaas <bhelgaas@xxxxxxxxxx>
Cc: Jiang Liu <jiang.liu@xxxxxxxxxxxxxxx>
Cc: Jason Cooper <jason@xxxxxxxxxxxxxx>
Link: http://lkml.kernel.org/r/1438091186-10244-4-git-send-email-marc.zyngier@xxxxxxx
Signed-off-by: Thomas Gleixner <tglx@xxxxxxxxxxxxx>
---
include/linux/device.h | 20 ++++++++++++++++++++
1 file changed, 20 insertions(+)
diff --git a/include/linux/device.h b/include/linux/device.h
index 3d3139a..50e0005 100644
--- a/include/linux/device.h
+++ b/include/linux/device.h
@@ -715,6 +715,7 @@ 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
@@ -775,6 +776,9 @@ 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
@@ -865,6 +869,22 @@ 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;
--
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