constructors + method declarations for cache, dram, reponse, storage

1 files changed, 47 insertions, 3 deletions

diff --git a/inc/storage.h b/inc/storage.h
index 8973016..bad9d10 100644
--- a/inc/storage.h
+++ b/inc/storage.h
@@ -1,15 +1,59 @@
 #ifndef STORAGE_H
 #define STORAGE_H
+#include "response.h"
 #include <array>
 #include <vector>
 
+enum Accessor {
+  MEMORY,
+  FETCH,
+  L1CACHE,
+};
+
 class Storage
 {
   public:
-	int **view(int base) { return nullptr; }
-	virtual bool store();
+  /**
+   * Write `data` into `address`.
+   * @param the source making the request.
+   * @param the data (hexadecimal) to write.
+   * @param the address to write to.
+   * @return a status code reflecting the state of the storage level.
+   */
+  virtual Response *
+  write(Accessor accessor, signed int data, int address) = 0;
+  /**
+   * Get the data at `address`.
+   * @param the source making the request.
+   * @param the address being accessed.
+   * @return a status code reflecting the state of the storage level, and the
+   * data being returned.
+   */
+  virtual Response *read(Accessor accessor, int address) = 0;
+  /**
+   * Sidedoor view of `lines` of memory starting at `base`.
+   * @param The base line to start getting memory from.
+   * @param The amount of lines to fetch.
+   * @return A matrix of data values, where each row is a line and each column
+   * is a word.
+   */
+  virtual int **view(int base, int lines) = 0;
 
-	std::vector<std::array<signed int, 4>> address_space;
+  protected:
+  /**
+   * The data currently stored in this level of storage.
+   */
+  std::vector<std::array<unsigned int, 4>> *data;
+  /**
+   * A pointer to the next lowest level of storage.
+   * Used in case of cache misses.
+   */
+  Storage *lower;
+  /**
+   * The number of clock cycles this level of storage takes to complete
+   * requests.
+   */
+  int delay;
 };
 
 #endif /* STORAGE_H_INCLUDED */