libnvdimm: blk labels and namespace instantiation

[firefly-linux-kernel-4.4.55.git] / include / linux / nd.h

diff --git a/include/linux/nd.h b/include/linux/nd.h
index 255c38a8308394b58f5913366d834176a10f0270..23276ea916900ff2f61c5e3f14d6b2d7d0830a77 100644 (file)
--- a/include/linux/nd.h
+++ b/include/linux/nd.h
@@ -50,6 +50,26 @@ struct nd_namespace_pmem {
        u8 *uuid;
 };
 
+/**
+ * struct nd_namespace_blk - namespace for dimm-bounded persistent memory
+ * @dev: namespace device creation by the nd region driver
+ * @alt_name: namespace name supplied in the dimm label
+ * @uuid: namespace name supplied in the dimm label
+ * @id: ida allocated id
+ * @lbasize: blk namespaces have a native sector size when btt not present
+ * @num_resources: number of dpa extents to claim
+ * @res: discontiguous dpa extents for given dimm
+ */
+struct nd_namespace_blk {
+       struct device dev;
+       char *alt_name;
+       u8 *uuid;
+       int id;
+       unsigned long lbasize;
+       int num_resources;
+       struct resource **res;
+};
+
 static inline struct nd_namespace_io *to_nd_namespace_io(struct device *dev)
 {
        return container_of(dev, struct nd_namespace_io, dev);
@@ -62,6 +82,11 @@ static inline struct nd_namespace_pmem *to_nd_namespace_pmem(struct device *dev)
        return container_of(nsio, struct nd_namespace_pmem, nsio);
 }
 
+static inline struct nd_namespace_blk *to_nd_namespace_blk(struct device *dev)
+{
+       return container_of(dev, struct nd_namespace_blk, dev);
+}
+
 #define MODULE_ALIAS_ND_DEVICE(type) \
        MODULE_ALIAS("nd:t" __stringify(type) "*")
 #define ND_DEVICE_MODALIAS_FMT "nd:t%d"