1 files changed, 169 insertions, 0 deletions
diff --git a/src/usr/runtime/tce.H b/src/usr/runtime/tce.H
new file mode 100644
index 000000000..b2a7b82c5
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+++ b/src/usr/runtime/tce.H
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+/* IBM_PROLOG_BEGIN_TAG                                                   */
+/* This is an automatically generated prolog.                             */
+/*                                                                        */
+/* $Source: src/include/usr/runtime/tce.H $                               */
+/*                                                                        */
+/* IBM CONFIDENTIAL                                                       */
+/*                                                                        */
+/* COPYRIGHT International Business Machines Corp. 2013                   */
+/*                                                                        */
+/* p1                                                                     */
+/*                                                                        */
+/* Object Code Only (OCO) source materials                                */
+/* Licensed Internal Code Source Materials                                */
+/* IBM HostBoot Licensed Internal Code                                    */
+/*                                                                        */
+/* The source code for this program is not published or otherwise         */
+/* divested of its trade secrets, irrespective of what has been           */
+/* deposited with the U.S. Copyright Office.                              */
+/*                                                                        */
+/* Origin: 30                                                             */
+/*                                                                        */
+/* IBM_PROLOG_END_TAG                                                     */
+#ifndef __TCE_H
+#define __TCE_H
+
+#include <stdint.h>
+#include <builtins.h>
+#include <errl/errlentry.H>
+#include <devicefw/userif.H>
+
+
+
+
+struct TceEntry
+{
+    // TCE Table
+    union
+    {
+        uint64_t WholeTceEntry;
+        struct {
+            uint64_t realPageNumber    :52;   // real page number
+            uint64_t valid             :1;    // The tces is valid for IO
+            uint64_t reserved          :9;    // reserved bits
+            uint64_t writeAccess       :1;    // Write access allowed
+            uint64_t readAccess        :1;    // Read access allowed
+        };
+
+    };
+};
+
+
+/** @class TceMgr
+ *  @brief   Responsible for managing the TCE entries
+ *
+ */
+    class TceMgr
+    {
+
+      private:
+        /** Indicator of TCEs being intialized */
+        int tceEntryInit;
+
+        /** Pointer to the Mapped TCE Table */
+        TceEntry *tceTableVaPtr;
+        /** physical address of the TCE Table */
+        uint64_t tceTablePhysAddr;
+
+        //** Max number of TCE entries - via size*/
+        uint64_t maxTceEntries;
+
+        /** size of the Tce Table */
+        uint64_t tceTableSize;
+
+
+        /**
+         * @brief Responsible for mapping the TCE Table
+         *
+         * @return errlHndl_t - Return error log if unsuccessful
+         *
+         */
+        errlHndl_t mapTceTable(void);
+
+      public:
+        /**
+         * @brief Constructor.  Initializes instance variables.
+         * @param[in/default] i_tableAddr - Starting address of the TCE
+         *         table.. Default address is TCE_TABLE_ADDR. This was added
+         *         for testing TCE entries and not using the "real" table
+         * @param[in/default] i_tableSize - Size of the TCE table. Default value
+         *         is TCE_TABLE_SIZE
+         */
+        TceMgr(uint64_t i_tableAddr = TCE_TABLE_ADDR,
+                uint64_t i_tableSize = TCE_TABLE_SIZE);
+
+        /**
+         * Destructor.
+         * No action necessary.
+         */
+        ~TceMgr();
+
+        /** Max TCE Entries for the TCE Table */
+        enum
+        {
+            NUM_TCE_TABLE_ENTRIES   = 0x80000,       // 512k entries
+        };
+
+        enum
+        {
+            INVALID_TOKEN_ENTRY   = 0xFFFFFFFFFFFFFFFF,
+        };
+
+
+
+        /**
+         * @brief Responsible for initalizing the TCE Table and mapping the
+         *         TCEtable
+         *
+         * @return errlHndl_t - Return error log if unsuccessful
+         *
+         */
+        errlHndl_t createTceTable();
+
+
+        /**
+         * @brief Responsible for setting up the Processors to point to the TCE
+         *         table
+         *
+         * @return errlHndl_t - Return error log if unsuccessful
+         *
+         */
+        errlHndl_t initTceInHdw();
+
+
+        /**
+         * @brief Responsible for allocating TCE Entries
+         *
+         * @param[in] i_startingAddress - Starting address to TCE
+         * @param[in] i_size - Size of the address space
+         * @param[out] startingToken - Starting Entry into the table.
+         *          (this is an offset into the array based on the
+         *           TCE index * PAGESIZE.  Each TCE entry maps to a
+         *           pagesize of memory)
+         *
+         * @return errl - Return Error Handle if failed.
+         *
+         */
+        errlHndl_t allocateTces(uint64_t i_startingAddress,
+                                  uint64_t i_size,
+                                  uint64_t& o_startingToken);
+
+        /**
+         * @brief Responsible for deallocating TCE Entries
+         *
+         * @param[in] i_startingToken - Token indicating the starting entry to
+         *                              remove
+         * @param[in] i_size - Size of memory space to remove TCE entries
+         *                     associated
+         *
+         * @return errl - Return Error Handle if fatal failure occurred.
+         *
+         */
+        errlHndl_t deallocateTces(uint64_t i_startingToken,
+                                    uint64_t i_size);
+
+
+    };
+
+#endif
+