Add bus_space_unmap() and bus_space_free() functions to release

a bus_space_handle allocated by bus_space_subregion().

3 files changed, 56 insertions, 0 deletions

diff --git a/sys/i386/include/bus_pc98.h b/sys/i386/include/bus_pc98.h
index e1ab78f..8aab781 100644
--- a/sys/i386/include/bus_pc98.h
+++ b/sys/i386/include/bus_pc98.h
@@ -170,6 +170,19 @@ void i386_bus_space_handle_free(bus_space_tag_t t, bus_space_handle_t bsh,
 				size_t size);
 
 /*
+ *      int bus_space_unmap (bus_space_tag_t t,
+ *          bus_space_handle_t bsh, bus_size_t size);
+ *
+ * Unmap a region of bus space.
+ */
+
+void i386_memio_unmap(bus_space_tag_t t, bus_space_handle_t bsh,
+		       bus_size_t size);
+
+#define bus_space_unmap(t, h, s)					\
+	i386_memio_unmap((t), (h), (s))
+
+/*
  *      int bus_space_subregion (bus_space_tag_t t,
  *          bus_space_handle_t bsh, bus_size_t offset, bus_size_t size,
  *          bus_space_handle_t *nbshp);
@@ -185,6 +198,19 @@ int i386_memio_subregion(bus_space_tag_t t, bus_space_handle_t bsh,
 	i386_memio_subregion((t), (h), (o), (s), (nhp))
 
 /*
+ *      int bus_space_free (bus_space_tag_t t,
+ *          bus_space_handle_t bsh, bus_size_t size);
+ *
+ * Free a region of bus space.
+ */
+
+void i386_memio_free(bus_space_tag_t t, bus_space_handle_t bsh,
+		     bus_size_t size);
+
+#define bus_space_free(t, h, s)						\
+	i386_memio_free((t), (h), (s))
+
+/*
  * Access methods for bus resources and address space.
  */
 #define	_BUS_ACCESS_METHODS_PROTO(TYPE,BWN) \
diff --git a/sys/pc98/i386/busiosubr.c b/sys/pc98/i386/busiosubr.c
index 4df0c1b..d8fadad 100644
--- a/sys/pc98/i386/busiosubr.c
+++ b/sys/pc98/i386/busiosubr.c
@@ -197,6 +197,21 @@ i386_bus_space_handle_free(bus_space_tag_t t, bus_space_handle_t bsh,
 /*************************************************************************
  * map
  *************************************************************************/
+void
+i386_memio_unmap(bus_space_tag_t t, bus_space_handle_t bsh, bus_size_t size)
+{
+
+	i386_bus_space_handle_free(t, bsh, bsh->bsh_sz);
+}
+
+void
+i386_memio_free(bus_space_tag_t t, bus_space_handle_t bsh, bus_size_t size)
+{
+
+	/* i386_memio_unmap() does all that we need to do. */
+	i386_memio_unmap(t, bsh, bsh->bsh_sz);
+}
+
 int
 i386_memio_subregion(bus_space_tag_t t, bus_space_handle_t pbsh,
 		     bus_size_t offset, bus_size_t size,
diff --git a/sys/pc98/pc98/busiosubr.c b/sys/pc98/pc98/busiosubr.c
index 4df0c1b..d8fadad 100644
--- a/sys/pc98/pc98/busiosubr.c
+++ b/sys/pc98/pc98/busiosubr.c
@@ -197,6 +197,21 @@ i386_bus_space_handle_free(bus_space_tag_t t, bus_space_handle_t bsh,
 /*************************************************************************
  * map
  *************************************************************************/
+void
+i386_memio_unmap(bus_space_tag_t t, bus_space_handle_t bsh, bus_size_t size)
+{
+
+	i386_bus_space_handle_free(t, bsh, bsh->bsh_sz);
+}
+
+void
+i386_memio_free(bus_space_tag_t t, bus_space_handle_t bsh, bus_size_t size)
+{
+
+	/* i386_memio_unmap() does all that we need to do. */
+	i386_memio_unmap(t, bsh, bsh->bsh_sz);
+}
+
 int
 i386_memio_subregion(bus_space_tag_t t, bus_space_handle_t pbsh,
 		     bus_size_t offset, bus_size_t size,