sparc: Add OF archdata propagation helper.
Add a helper function that, given a bus of_device node, propagates
all iommu, stc, and host_controller values down to the child nodes.
Signed-off-by: David S. Miller <davem@xxxxxxxxxxxxx>
---
arch/sparc/include/asm/of_device.h | 2 ++
arch/sparc/kernel/of_device.c | 22 ++++++++++++++++++++++
arch/sparc64/kernel/of_device.c | 22 ++++++++++++++++++++++
3 files changed, 46 insertions(+), 0 deletions(-)
diff --git a/arch/sparc/include/asm/of_device.h b/arch/sparc/include/asm/of_device.h
index bba777a..a5d9811 100644
--- a/arch/sparc/include/asm/of_device.h
+++ b/arch/sparc/include/asm/of_device.h
@@ -30,6 +30,8 @@ struct of_device
extern void __iomem *of_ioremap(struct resource *res, unsigned long offset, unsigned long size, char *name);
extern void of_iounmap(struct resource *res, void __iomem *base, unsigned long size);
+extern void of_propagate_archdata(struct of_device *bus);
+
/* This is just here during the transition */
#include <linux/of_platform.h>
diff --git a/arch/sparc/kernel/of_device.c b/arch/sparc/kernel/of_device.c
index aace71f..8fdc1b3 100644
--- a/arch/sparc/kernel/of_device.c
+++ b/arch/sparc/kernel/of_device.c
@@ -40,6 +40,28 @@ unsigned int irq_of_parse_and_map(struct device_node *node, int index)
}
EXPORT_SYMBOL(irq_of_parse_and_map);
+/* Take the archdata values for IOMMU, STC, and HOSTDATA found in
+ * BUS and propagate to all child of_device objects.
+ */
+void of_propagate_archdata(struct of_device *bus)
+{
+ struct dev_archdata *bus_sd = &bus->dev.archdata;
+ struct device_node *bus_dp = bus->node;
+ struct device_node *dp;
+
+ for (dp = bus_dp->child; dp; dp = dp->sibling) {
+ struct of_device *op = of_find_device_by_node(dp);
+
+ op->dev.archdata.iommu = bus_sd->iommu;
+ op->dev.archdata.stc = bus_sd->stc;
+ op->dev.archdata.host_controller = bus_sd->host_controller;
+ op->dev.archdata.numa_node = bus_sd->numa_node;
+
+ if (dp->child)
+ of_propagate_archdata(op);
+ }
+}
+
#ifdef CONFIG_PCI
struct bus_type ebus_bus_type;
EXPORT_SYMBOL(ebus_bus_type);
diff --git a/arch/sparc64/kernel/of_device.c b/arch/sparc64/kernel/of_device.c
index a30f2af..b22475f 100644
--- a/arch/sparc64/kernel/of_device.c
+++ b/arch/sparc64/kernel/of_device.c
@@ -66,6 +66,28 @@ unsigned int irq_of_parse_and_map(struct device_node *node, int index)
}
EXPORT_SYMBOL(irq_of_parse_and_map);
+/* Take the archdata values for IOMMU, STC, and HOSTDATA found in
+ * BUS and propagate to all child of_device objects.
+ */
+void of_propagate_archdata(struct of_device *bus)
+{
+ struct dev_archdata *bus_sd = &bus->dev.archdata;
+ struct device_node *bus_dp = bus->node;
+ struct device_node *dp;
+
+ for (dp = bus_dp->child; dp; dp = dp->sibling) {
+ struct of_device *op = of_find_device_by_node(dp);
+
+ op->dev.archdata.iommu = bus_sd->iommu;
+ op->dev.archdata.stc = bus_sd->stc;
+ op->dev.archdata.host_controller = bus_sd->host_controller;
+ op->dev.archdata.numa_node = bus_sd->numa_node;
+
+ if (dp->child)
+ of_propagate_archdata(op);
+ }
+}
+
#ifdef CONFIG_PCI
struct bus_type ebus_bus_type;
EXPORT_SYMBOL(ebus_bus_type);
--
1.5.6.5.GIT
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