[PATCH v4 02/25] xen: arm: move declaration of map_device_irqs_to_domain() to common header

[Oleksii Kurochko <oleksii.kurochko@xxxxxxxxx>]

As map_device_irqs_to_domain() is used unconditionally by common part of
dom0less code, move the prototype to a common header.

fdt-domain-build.h is chosen as map_device_irqs_to_domain() could be
also called indirectly in Arm's DOM0-related code and DT overlay feature.

Signed-off-by: Oleksii Kurochko <oleksii.kurochko@xxxxxxxxx>
---
Changes in v4:
 - Reword commit message: use imperative mood ("move the prototype") and
   mention the DT overlay feature alongside Arm's DOM0-related code.
 - Add #include <xen/fdt-domain-build.h> to Arm's device.c so the definition
   site sees the prototype.
 - Drop the duplicated function description above the definition in device.c
   (it now lives only on the prototype in fdt-domain-build.h).
---
Changes in v3:
 - Add tag arm and move this patch earlier before RISC-V-related patches.
---
Changes in v2:
 - New patch.
---
 xen/arch/arm/device.c              |  9 +--------
 xen/arch/arm/include/asm/setup.h   |  3 ---
 xen/include/xen/fdt-domain-build.h | 13 +++++++++++++
 3 files changed, 14 insertions(+), 11 deletions(-)

diff --git a/xen/arch/arm/device.c b/xen/arch/arm/device.c
index 7d9644fd8b6d..b11366d722ef 100644
--- a/xen/arch/arm/device.c
+++ b/xen/arch/arm/device.c
@@ -11,6 +11,7 @@
 #include <xen/device_tree.h>
 #include <xen/dt-overlay.h>
 #include <xen/errno.h>
+#include <xen/fdt-domain-build.h>
 #include <xen/iocap.h>
 #include <xen/lib.h>
 
@@ -117,14 +118,6 @@ int __overlay_init map_range_to_domain(const struct 
dt_device_node *dev,
     return 0;
 }
 
-/*
- * map_device_irqs_to_domain retrieves the interrupts configuration from
- * a device tree node and maps those interrupts to the target domain.
- *
- * Returns:
- *   < 0 error
- *   0   success
- */
 int __overlay_init map_device_irqs_to_domain(struct domain *d,
                                              struct dt_device_node *dev,
                                              bool need_mapping,
diff --git a/xen/arch/arm/include/asm/setup.h b/xen/arch/arm/include/asm/setup.h
index 14fa92d5c1db..2af780512540 100644
--- a/xen/arch/arm/include/asm/setup.h
+++ b/xen/arch/arm/include/asm/setup.h
@@ -51,9 +51,6 @@ void init_traps(void);
 int handle_device(struct domain *d, struct dt_device_node *dev, p2m_type_t 
p2mt,
                   struct rangeset *iomem_ranges, struct rangeset *irq_ranges);
 
-int map_device_irqs_to_domain(struct domain *d, struct dt_device_node *dev,
-                              bool need_mapping, struct rangeset *irq_ranges);
-
 int map_irq_to_domain(struct domain *d, unsigned int irq,
                       bool need_mapping, const char *devname);
 
diff --git a/xen/include/xen/fdt-domain-build.h 
b/xen/include/xen/fdt-domain-build.h
index 671486c1c837..8612e98dfda5 100644
--- a/xen/include/xen/fdt-domain-build.h
+++ b/xen/include/xen/fdt-domain-build.h
@@ -12,6 +12,7 @@
 
 struct domain;
 struct page_info;
+struct rangeset;
 struct membanks;
 
 typedef bool (*alloc_domheap_mem_cb)(struct domain *d, struct page_info *pg,
@@ -79,6 +80,18 @@ static inline void set_domain_type(struct domain *d, const 
struct kernel_info *k
 #endif
 }
 
+/*
+ * Retrieves the interrupts configuration from a device tree node and maps
+ * those interrupts to the target domain.
+ *
+ * Returns:
+ *   < 0 error
+ *   0   success
+ */
+int map_device_irqs_to_domain(struct domain *d, struct dt_device_node *dev,
+                              bool need_mapping,
+                              struct rangeset *irq_ranges);
+
 #endif /* __XEN_FDT_DOMAIN_BUILD_H__ */
 
 /*
-- 
2.54.0