Changeset 0c0410b in mainline for genarch/include/mm/page_ht.h

Timestamp:

2006-01-10T13:25:54Z (19 years ago)

Author:

Jakub Jermar <jakub@…>

Branches:

lfn, master, serial, ticket/834-toolchain-update, topic/msim-upgrade, topic/simplify-dev-export

Children:

e30bc2a

Parents:

42edee68

Message:

Memory management work.
Proto-interface and dummy implementation of generic page hash table subsytem.

File:

• genarch/include/mm/page_ht.h (modified) (2 diffs)

genarch/include/mm/page_ht.h

@@ -29 +29 @@
 /*
  * This is the generic page hash table interface.
+ * Architectures that use single page hash table for
+ * storing page translations must implement it.
  */
 
@@ -36 +38 @@
 #include <mm/page.h>
 
+/** Hash function.
+ *
+ * @param page Virtual address. Only vpn bits will be used.
+ * @param asid Address space identifier.
+ *
+ * @return Pointer to hash table typed pte_t *.
+ */
+#define HT_HASH(page, asid)             HT_HASH_ARCH(page, asid)
+
+/** Compare PTE with page and asid.
+ *
+ * @param page Virtual address. Only vpn bits will be used.
+ * @param asid Address space identifier.
+ * @param t PTE.
+ *
+ * @return 1 on match, 0 otherwise.
+ */
+#define HT_COMPARE(page, asid, t)       HT_COMPARE_ARCH(page, asid, t)
+
+/** Identify empty hash table slots.
+ *
+ * @param t Pointer ro hash table typed pte_t *.
+ *
+ * @return 1 if the slot is empty, 0 otherwise.
+ */
+#define HT_SLOT_EMPTY(t)                HT_SLOT_EMPTY_ARCH(t)
+
+/** Return next record in collision chain.
+ *
+ * @param t PTE.
+ *
+ * @return Successor of PTE or NULL.
+ */
+#define HT_GET_NEXT(t)                  HT_GET_NEXT_ARCH(t)
+
+/** Set successor in collision chain.
+ *
+ * @param t PTE.
+ * @param s Successor or NULL.
+ */
+#define HT_SET_NEXT(t, s)               HT_SET_NEXT_ARCH(t, s)
+
+/** Set page hash table record.
+ *
+ * @param t PTE.
+ * @param page Virtual address. Only vpn bits will be used.
+ * @param asid Address space identifier.
+ * @param frame Physical address. Only pfn bits will be used.
+ * @param flags Flags. See mm/page.h.
+ */
+#define HT_SET_RECORD(t, page, asid, frame, flags)      HT_SET_RECORD_ARCH(t, page, asid, frame, flags)
+
 extern page_operations_t page_ht_operations;