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[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index] [XEN][RFC PATCH 01/13] device tree: Remove __init from function type
Change function type of following function to access during runtime:
1. handle_device_interrupt()
2. map_irq_to_domain()
3. map_range_to_domain()
4. unflatten_dt_node()
5. unflatten_device_tree()
Remove .init from domain_build.o and move map_range_data declaration to
domain_build.h.
These changes are done to support the dynamic programming of a nodes where an
overlay node will be added to fdt and unflattened node will be added to dt_host.
Furthermore, irq and mmio mapping will be done for the added node.
Signed-off-by: Vikram Garhwal <fnu.vikram@xxxxxxxxxx>
---
xen/arch/arm/Makefile | 2 +-
xen/arch/arm/domain_build.c | 15 ++++-----------
xen/common/device_tree.c | 18 +++++++++---------
xen/include/asm-arm/domain_build.h | 10 ++++++++++
xen/include/xen/device_tree.h | 5 +++++
5 files changed, 29 insertions(+), 21 deletions(-)
diff --git a/xen/arch/arm/Makefile b/xen/arch/arm/Makefile
index 3d3b97b..bef4517 100644
--- a/xen/arch/arm/Makefile
+++ b/xen/arch/arm/Makefile
@@ -15,7 +15,7 @@ obj-y += decode.o
obj-y += device.o
obj-$(CONFIG_IOREQ_SERVER) += dm.o
obj-y += domain.o
-obj-y += domain_build.init.o
+obj-y += domain_build.o
obj-y += domctl.o
obj-$(CONFIG_EARLY_PRINTK) += early_printk.o
obj-y += gic.o
diff --git a/xen/arch/arm/domain_build.c b/xen/arch/arm/domain_build.c
index 206038d..3a457d3 100644
--- a/xen/arch/arm/domain_build.c
+++ b/xen/arch/arm/domain_build.c
@@ -47,12 +47,6 @@ static int __init parse_dom0_mem(const char *s)
}
custom_param("dom0_mem", parse_dom0_mem);
-struct map_range_data
-{
- struct domain *d;
- p2m_type_t p2mt;
-};
-
/* Override macros from asm/page.h to make them work with mfn_t */
#undef virt_to_mfn
#define virt_to_mfn(va) _mfn(__virt_to_mfn(va))
@@ -1144,7 +1138,7 @@ int __init make_chosen_node(const struct kernel_info
*kinfo)
return res;
}
-int __init map_irq_to_domain(struct domain *d, unsigned int irq,
+int map_irq_to_domain(struct domain *d, unsigned int irq,
bool need_mapping, const char *devname)
{
int res;
@@ -1210,7 +1204,7 @@ static int __init map_dt_irq_to_domain(const struct
dt_device_node *dev,
return 0;
}
-static int __init map_range_to_domain(const struct dt_device_node *dev,
+int map_range_to_domain(const struct dt_device_node *dev,
u64 addr, u64 len,
void *data)
{
@@ -1300,9 +1294,8 @@ static int __init map_device_children(struct domain *d,
* < 0 error
* 0 success
*/
-static int __init handle_device_interrupts(struct domain *d,
- struct dt_device_node *dev,
- bool need_mapping)
+int handle_device_interrupts(struct domain *d, struct dt_device_node *dev,
+ bool need_mapping)
{
unsigned int i, nirq;
int res;
diff --git a/xen/common/device_tree.c b/xen/common/device_tree.c
index 03d25a8..cda21be 100644
--- a/xen/common/device_tree.c
+++ b/xen/common/device_tree.c
@@ -1750,12 +1750,12 @@ int dt_count_phandle_with_args(const struct
dt_device_node *np,
* @allnextpp: pointer to ->allnext from last allocated device_node
* @fpsize: Size of the node path up at the current depth.
*/
-static unsigned long __init unflatten_dt_node(const void *fdt,
- unsigned long mem,
- unsigned long *p,
- struct dt_device_node *dad,
- struct dt_device_node
***allnextpp,
- unsigned long fpsize)
+static unsigned long unflatten_dt_node(const void *fdt,
+ unsigned long mem,
+ unsigned long *p,
+ struct dt_device_node *dad,
+ struct dt_device_node ***allnextpp,
+ unsigned long fpsize)
{
struct dt_device_node *np;
struct dt_property *pp, **prev_pp = NULL;
@@ -1986,7 +1986,7 @@ static unsigned long __init unflatten_dt_node(const void
*fdt,
}
/**
- * __unflatten_device_tree - create tree of device_nodes from flat blob
+ * unflatten_device_tree - create tree of device_nodes from flat blob
*
* unflattens a device-tree, creating the
* tree of struct device_node. It also fills the "name" and "type"
@@ -1995,7 +1995,7 @@ static unsigned long __init unflatten_dt_node(const void
*fdt,
* @fdt: The fdt to expand
* @mynodes: The device_node tree created by the call
*/
-static void __init __unflatten_device_tree(const void *fdt,
+void unflatten_device_tree(const void *fdt,
struct dt_device_node **mynodes)
{
unsigned long start, mem, size;
@@ -2118,7 +2118,7 @@ dt_find_interrupt_controller(const struct dt_device_match
*matches)
void __init dt_unflatten_host_device_tree(void)
{
- __unflatten_device_tree(device_tree_flattened, &dt_host);
+ unflatten_device_tree(device_tree_flattened, &dt_host);
dt_alias_scan();
}
diff --git a/xen/include/asm-arm/domain_build.h
b/xen/include/asm-arm/domain_build.h
index 34ceddc..17449b1 100644
--- a/xen/include/asm-arm/domain_build.h
+++ b/xen/include/asm-arm/domain_build.h
@@ -4,10 +4,20 @@
#include <xen/sched.h>
#include <asm/kernel.h>
+struct map_range_data
+{
+ struct domain *d;
+ p2m_type_t p2mt;
+};
+
int map_irq_to_domain(struct domain *d, unsigned int irq,
bool need_mapping, const char *devname);
int make_chosen_node(const struct kernel_info *kinfo);
void evtchn_allocate(struct domain *d);
+int handle_device_interrupts(struct domain *d, struct dt_device_node *dev,
+ bool need_mapping);
+int map_range_to_domain(const struct dt_device_node *dev, u64 addr, u64 len,
+ void *data);
#ifndef CONFIG_ACPI
static inline int prepare_acpi(struct domain *d, struct kernel_info *kinfo)
diff --git a/xen/include/xen/device_tree.h b/xen/include/xen/device_tree.h
index b02696b..a4e98a7 100644
--- a/xen/include/xen/device_tree.h
+++ b/xen/include/xen/device_tree.h
@@ -177,6 +177,11 @@ int device_tree_for_each_node(const void *fdt, int node,
*/
void dt_unflatten_host_device_tree(void);
+/*
+ * unflatten any device tree.
+ */
+void unflatten_device_tree(const void *fdt, struct dt_device_node **mynodes);
+
/**
* IRQ translation callback
* TODO: For the moment we assume that we only have ONE
--
2.7.4
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