Merge git://git.denx.de/u-boot-x86

[oweals/u-boot.git] / include / fdtdec.h

diff --git a/include/fdtdec.h b/include/fdtdec.h
index 3814f82766d4214413f9ee7000be3d69a42945c3..4ae77be9ba7c8bf09860606645db711db0911fb2 100644 (file)
--- a/include/fdtdec.h
+++ b/include/fdtdec.h
@@ -40,6 +40,27 @@ struct fdt_memory {
        fdt_addr_t end;
 };
 
+/*
+ * Information about a resource. start is the first address of the resource
+ * and end is the last address (inclusive). The length of the resource will
+ * be equal to: end - start + 1.
+ */
+struct fdt_resource {
+       fdt_addr_t start;
+       fdt_addr_t end;
+};
+
+/**
+ * Compute the size of a resource.
+ *
+ * @param res  the resource to operate on
+ * @return the size of the resource
+ */
+static inline fdt_size_t fdt_resource_size(const struct fdt_resource *res)
+{
+       return res->end - res->start + 1;
+}
+
 /**
  * Compat types that we know about and for which we might have drivers.
  * Each is named COMPAT_<dir>_<filename> where <dir> is the directory
@@ -598,4 +619,46 @@ struct fmap_entry {
  */
 int fdtdec_read_fmap_entry(const void *blob, int node, const char *name,
                           struct fmap_entry *entry);
+
+/**
+ * Obtain an indexed resource from a device property.
+ *
+ * @param fdt          FDT blob
+ * @param node         node to examine
+ * @param property     name of the property to parse
+ * @param index                index of the resource to retrieve
+ * @param res          returns the resource
+ * @return 0 if ok, negative on error
+ */
+int fdt_get_resource(const void *fdt, int node, const char *property,
+                    unsigned int index, struct fdt_resource *res);
+
+/**
+ * Obtain a named resource from a device property.
+ *
+ * Look up the index of the name in a list of strings and return the resource
+ * at that index.
+ *
+ * @param fdt          FDT blob
+ * @param node         node to examine
+ * @param property     name of the property to parse
+ * @param prop_names   name of the property containing the list of names
+ * @param name         the name of the entry to look up
+ * @param res          returns the resource
+ */
+int fdt_get_named_resource(const void *fdt, int node, const char *property,
+                          const char *prop_names, const char *name,
+                          struct fdt_resource *res);
+
+/**
+ * Look at the reg property of a device node that represents a PCI device
+ * and parse the bus, device and function number from it.
+ *
+ * @param fdt          FDT blob
+ * @param node         node to examine
+ * @param bdf          returns bus, device, function triplet
+ * @return 0 if ok, negative on error
+ */
+int fdtdec_pci_get_bdf(const void *fdt, int node, int *bdf);
+
 #endif