[PATCH v5 1/3] memory: export memory_region_to_absolute_addr() function

[Andrzej Jakowski <andrzej.jakowski@linux.intel.com>]

This change exports memory_region_to_absolute_addr() function so it can
be used by drivers requiring to calculate absolute address for memory
subregions when memory hierarchy is used.

Signed-off-by: Andrzej Jakowski <andrzej.jakowski@linux.intel.com>
---
 include/exec/memory.h | 9 +++++++++
 softmmu/memory.c      | 2 +-
 2 files changed, 10 insertions(+), 1 deletion(-)

diff --git a/include/exec/memory.h b/include/exec/memory.h
index 307e527835..6e5bba602e 100644
--- a/include/exec/memory.h
+++ b/include/exec/memory.h
@@ -2017,6 +2017,15 @@ MemTxResult memory_region_dispatch_write(MemoryRegion *mr,
                                          MemOp op,
                                          MemTxAttrs attrs);
 
+/**
+ * memory_region_to_absolute_addr: walk through memory hierarchy to retrieve
+ * absolute address for given MemoryRegion.
+ *
+ * @mr: #MemoryRegion to scan through
+ * @offset: starting offset within mr
+ */
+hwaddr memory_region_to_absolute_addr(MemoryRegion *mr, hwaddr offset);
+
 /**
  * address_space_init: initializes an address space
  *
diff --git a/softmmu/memory.c b/softmmu/memory.c
index 9200b20130..deff3739ff 100644
--- a/softmmu/memory.c
+++ b/softmmu/memory.c
@@ -399,7 +399,7 @@ static inline uint64_t memory_region_shift_write_access(uint64_t *value,
     return tmp;
 }
 
-static hwaddr memory_region_to_absolute_addr(MemoryRegion *mr, hwaddr offset)
+hwaddr memory_region_to_absolute_addr(MemoryRegion *mr, hwaddr offset)
 {
     MemoryRegion *root;
     hwaddr abs_addr = offset;
-- 
2.21.1