Virtual File System module load and unload

Change-Id: Iaa6a256a8a15ac48bfba5bc1cab292c5ac246166
Reviewed-on: http://gfw160.austin.ibm.com:8080/gerrit/253
Tested-by: Jenkins Server
Reviewed-by: A. Patrick Williams III <iawillia@us.ibm.com>
Reviewed-by: Daniel M. Crowell <dcrowell@us.ibm.com>

1 files changed, 90 insertions, 0 deletions

diff --git a/src/usr/vfs/vfsrp.H b/src/usr/vfs/vfsrp.H
new file mode 100644
index 000000000..456979e2d
--- /dev/null
+++ b/src/usr/vfs/vfsrp.H
@@ -0,0 +1,90 @@
+#ifndef VFSRP_H
+#define VFSRP_H
+
+#include <stdint.h>
+#include <builtins.h>
+#include <errl/errltypes.H>
+
+struct msg_t;
+
+namespace VFS
+{
+    void vfs_msg_handler(void * unused);
+
+    /**
+     * Virtual File System Service
+     */
+    class VfsRp
+    {
+        public:
+
+            /**
+             * static init
+             * @param[in] task args
+             */
+            static void init(void * i_taskArgs);
+
+        protected:
+            /**
+             * Ctor
+             */
+            VfsRp() : iv_msgQ(NULL), iv_pnor_vaddr(0) {}
+
+            /**
+             * Dtor
+             */
+            ~VfsRp();
+
+            /**
+             * Start message handler
+             */
+            static void msg_handler(void * unused);
+
+            /**
+             * Load or Unload a module
+             * @param[in] i_msg the message
+             * @note Does not return. calls task_end()
+             */
+            static void load_unload(void * i_msg);
+
+            /**
+             * Call _start on module
+             * @param[in] i_msg the message
+             * @note Does not return. calls task_end()
+             */
+            static void exec(void * i_msg);
+
+        private: // functions
+
+            /**
+             * Initialize this object
+             * @return return code on error
+             */
+            errlHndl_t _init();
+
+            /**
+             * Message handler 
+             */
+            void msgHandler();
+
+            /**
+             * Load or Unload a module
+             * @param[in] i_msg the message
+             */
+            void _load_unload(msg_t * i_msg);
+
+            /**
+             * Call _start on module
+             * @param[in] i_msg the message
+             */
+            void _exec(msg_t * i_msg);
+
+        private: // data
+
+            msg_q_t iv_msgQ;         //!< message queue
+            uint64_t iv_pnor_vaddr;  //!< virtual address of ext image in PFNOR
+    };
+
+}; // VFS namepsace
+
+#endif