Add remap_bynode() since I use it in the rkpcie(4) implementation.

2 files changed, 18 insertions, 2 deletions

diff --git a/sys/dev/ofw/ofw_misc.c b/sys/dev/ofw/ofw_misc.c
index 60d33f58931..06d74753316 100644
--- a/sys/dev/ofw/ofw_misc.c
+++ b/sys/dev/ofw/ofw_misc.c
@@ -1,4 +1,4 @@
-/*	$OpenBSD: ofw_misc.c,v 1.2 2017/05/05 17:38:22 kettenis Exp $	*/
+/*	$OpenBSD: ofw_misc.c,v 1.3 2018/01/03 04:15:51 kettenis Exp $	*/
 /*
  * Copyright (c) 2017 Mark Kettenis
  *
@@ -25,6 +25,7 @@
 #include <dev/ofw/ofw_misc.h>
 
 struct regmap {
+	int			rm_node;
 	uint32_t		rm_phandle;
 	bus_space_tag_t		rm_tag;
 	bus_space_handle_t	rm_handle;
@@ -45,6 +46,7 @@ regmap_register(int node, bus_space_tag_t tag, bus_space_handle_t handle,
 	phandle = OF_getpropint(node, "phandle", 0);
 	if (phandle) {
 		rm = malloc(sizeof(struct regmap), M_DEVBUF, M_WAITOK);
+		rm->rm_node = node;
 		rm->rm_phandle = phandle;
 		rm->rm_tag = tag;
 		rm->rm_handle = handle;
@@ -54,6 +56,19 @@ regmap_register(int node, bus_space_tag_t tag, bus_space_handle_t handle,
 }
 
 struct regmap *
+regmap_bynode(int node)
+{
+	struct regmap *rm;
+
+	LIST_FOREACH(rm, &regmaps, rm_list) {
+		if (rm->rm_node == node)
+			return rm;
+	}
+
+	return NULL;
+}
+
+struct regmap *
 regmap_byphandle(uint32_t phandle)
 {
 	struct regmap *rm;
diff --git a/sys/dev/ofw/ofw_misc.h b/sys/dev/ofw/ofw_misc.h
index 37bd01105ec..add4cdf303a 100644
--- a/sys/dev/ofw/ofw_misc.h
+++ b/sys/dev/ofw/ofw_misc.h
@@ -1,4 +1,4 @@
-/*	$OpenBSD: ofw_misc.h,v 1.1 2017/03/09 20:01:10 kettenis Exp $	*/
+/*	$OpenBSD: ofw_misc.h,v 1.2 2018/01/03 04:15:51 kettenis Exp $	*/
 /*
  * Copyright (c) 2017 Mark Kettenis
  *
@@ -21,6 +21,7 @@
 void	regmap_register(int, bus_space_tag_t, bus_space_handle_t, bus_size_t);
 
 struct regmap;
+struct regmap *regmap_bynode(int);
 struct regmap *regmap_byphandle(uint32_t);
 
 uint32_t regmap_read_4(struct regmap *, bus_size_t);