of: import pci range parser from linux

Signed-off-by: Lucas Stach <dev@lynxeye.de>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>

1 files changed, 57 insertions, 0 deletions

diff --git a/include/of_address.h b/include/of_address.h
index 9022ab7ca0..ebf3ec2a24 100644
--- a/include/of_address.h
+++ b/include/of_address.h
@@ -4,6 +4,38 @@
 #include <common.h>
 #include <of.h>
 
+struct of_pci_range_parser {
+	struct device_node *node;
+	const __be32 *range;
+	const __be32 *end;
+	int np;
+	int pna;
+};
+
+struct of_pci_range {
+	u32 pci_space;
+	u64 pci_addr;
+	u64 cpu_addr;
+	u64 size;
+	u32 flags;
+};
+
+#define for_each_of_pci_range(parser, range) \
+	for (; of_pci_range_parser_one(parser, range);)
+
+static inline void of_pci_range_to_resource(struct of_pci_range *range,
+					    struct device_node *np,
+					    struct resource *res)
+{
+	res->flags = range->flags;
+	res->start = range->cpu_addr;
+	res->end = range->cpu_addr + range->size - 1;
+	res->parent = NULL;
+	INIT_LIST_HEAD(&res->children);
+	INIT_LIST_HEAD(&res->sibling);
+	res->name = np->full_name;
+}
+
 #ifndef pci_address_to_pio
 static inline unsigned long pci_address_to_pio(phys_addr_t addr) { return -1; }
 #endif
@@ -69,4 +101,29 @@ static inline void __iomem *of_iomap(struct device_node *np, int index)
 
 #endif /* CONFIG_OFTREE */
 
+#ifdef CONFIG_OF_PCI
+
+extern int of_pci_range_parser_init(struct of_pci_range_parser *parser,
+			struct device_node *node);
+
+extern struct of_pci_range *of_pci_range_parser_one(
+			struct of_pci_range_parser *parser,
+			struct of_pci_range *range);
+
+#else
+
+static inline int of_pci_range_parser_init(struct of_pci_range_parser *parser,
+			struct device_node *node)
+{
+	return -1;
+}
+
+static inline struct of_pci_range *of_pci_range_parser_one(
+					struct of_pci_range_parser *parser,
+					struct of_pci_range *range)
+{
+	return NULL;
+}
+#endif /* CONFIG_OF_PCI */
+
 #endif /* __OF_ADDRESS_H */