/*
- * Copyright (c) 2001-2005 The Regents of The University of Michigan
- * All rights reserved.
+ * Copyright (c) 2012 ARM Limited
+ * All rights reserved
+ *
+ * The license below extends only to copyright in the software and shall
+ * not be construed as granting a license to any other intellectual
+ * property including but not limited to intellectual property relating
+ * to a hardware implementation of the functionality of the software
+ * licensed hereunder. You may use the software subject to the license
+ * terms below provided that you ensure that this notice is replicated
+ * unmodified and in its entirety in all distributions of the software,
+ * modified or unmodified, in source code or in binary form.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions are
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*
- * Authors: Ron Dreslinski
- */
-
-/* @file
+ * Authors: Andreas Hansson
*/
#ifndef __PHYSICAL_MEMORY_HH__
#define __PHYSICAL_MEMORY_HH__
-#include "base/range.hh"
-#include "mem/mem_object.hh"
+#include "base/range_map.hh"
+#include "mem/abstract_mem.hh"
#include "mem/packet.hh"
-#include "mem/port.hh"
-#include "sim/eventq.hh"
-#include <map>
-#include <string>
-
-//
-// Functional model for a contiguous block of physical memory. (i.e. RAM)
-//
-class PhysicalMemory : public MemObject
-{
- class MemoryPort : public Port
- {
- PhysicalMemory *memory;
-
- public:
-
- MemoryPort(const std::string &_name, PhysicalMemory *_memory);
-
- protected:
-
- virtual bool recvTiming(Packet *pkt);
-
- virtual Tick recvAtomic(Packet *pkt);
-
- virtual void recvFunctional(Packet *pkt);
-
- virtual void recvStatusChange(Status status);
- virtual void getDeviceAddressRanges(AddrRangeList &resp,
- AddrRangeList &snoop);
+/**
+ * The physical memory encapsulates all memories in the system and
+ * provides basic functionality for accessing those memories without
+ * going through the memory system and interconnect.
+ */
+class PhysicalMemory
+{
- virtual int deviceBlockSize();
- };
+ private:
- int numPorts;
+ // Global address map
+ range_map<Addr, AbstractMemory* > addrMap;
+ // a mutable cache for the last range that matched an address
+ mutable Range<Addr> rangeCache;
- struct MemResponseEvent : public Event
- {
- Packet *pkt;
- MemoryPort *memoryPort;
+ // All address-mapped memories
+ std::vector<AbstractMemory*> memories;
- MemResponseEvent(Packet *pkt, MemoryPort *memoryPort);
- void process();
- const char *description();
- };
+ // The total memory size
+ uint64_t size;
- private:
- // prevent copying of a MainMemory object
- PhysicalMemory(const PhysicalMemory &specmem);
- const PhysicalMemory &operator=(const PhysicalMemory &specmem);
-
- protected:
- Addr base_addr;
- Addr pmem_size;
- uint8_t *pmem_addr;
- MemoryPort *port;
- int page_ptr;
- Tick lat;
+ // Prevent copying
+ PhysicalMemory(const PhysicalMemory&);
- public:
- Addr new_page();
- uint64_t size() { return pmem_size; }
+ // Prevent assignment
+ PhysicalMemory& operator=(const PhysicalMemory&);
public:
- PhysicalMemory(const std::string &n, Tick latency);
- virtual ~PhysicalMemory();
- public:
- int deviceBlockSize();
- void getAddressRanges(AddrRangeList &resp, AddrRangeList &snoop);
- virtual Port *getPort(const std::string &if_name, int idx = -1);
- void virtual init();
+ /**
+ * Create a physical memory object, wrapping a number of memories.
+ */
+ PhysicalMemory(const std::vector<AbstractMemory*>& _memories);
+
+ /**
+ * Nothing to destruct.
+ */
+ ~PhysicalMemory() { }
+
+ /**
+ * Check if a physical address is within a range of a memory that
+ * is part of the global address map.
+ *
+ * @param addr A physical address
+ * @return Whether the address corresponds to a memory
+ */
+ bool isMemAddr(Addr addr) const;
+
+ /**
+ * Get the memory ranges for all memories that are to be reported
+ * to the configuration table.
+ *
+ * @return All configuration table memory ranges
+ */
+ AddrRangeList getConfAddrRanges() const;
+
+ /**
+ * Get the total physical memory size.
+ *
+ * @return The sum of all memory sizes
+ */
+ uint64_t totalSize() const { return size; }
+
+ /**
+ *
+ */
+ void access(PacketPtr pkt);
+ void functionalAccess(PacketPtr pkt);
+};
- // fast back-door memory access for vtophys(), remote gdb, etc.
- // uint64_t phys_read_qword(Addr addr) const;
- private:
- bool doTimingAccess(Packet *pkt, MemoryPort *memoryPort);
- Tick doAtomicAccess(Packet *pkt);
- void doFunctionalAccess(Packet *pkt);
- void recvStatusChange(Port::Status status);
- public:
- virtual void serialize(std::ostream &os);
- virtual void unserialize(Checkpoint *cp, const std::string §ion);
-
-};
#endif //__PHYSICAL_MEMORY_HH__