diff options
Diffstat (limited to 'mem/port.hh')
| -rw-r--r-- | mem/port.hh | 25 |
1 files changed, 20 insertions, 5 deletions
diff --git a/mem/port.hh b/mem/port.hh index 947e7896a..1884e96bf 100644 --- a/mem/port.hh +++ b/mem/port.hh @@ -165,8 +165,8 @@ class Port /** Function called by the associated device to send a functional access, an access in which the data is instantly updated everywhere in the - memory system, without affecting the current state of any block - or moving the block. + memory system, without affecting the current state of any block or + moving the block. */ void sendFunctional(Packet &pkt) { return peer->recvFunctional(pkt); } @@ -197,21 +197,21 @@ class Port appropriate chunks. The default implementation can use getBlockSize() to determine the block size and go from there. */ - void readBlob(Addr addr, uint8_t *p, int size); + virtual void readBlob(Addr addr, uint8_t *p, int size); /** This function is a wrapper around sendFunctional() that breaks a larger, arbitrarily aligned access into appropriate chunks. The default implementation can use getBlockSize() to determine the block size and go from there. */ - void writeBlob(Addr addr, uint8_t *p, int size); + virtual void writeBlob(Addr addr, uint8_t *p, int size); /** Fill size bytes starting at addr with byte value val. This should not need to be virtual, since it can be implemented in terms of writeBlob(). However, it shouldn't be performance-critical either, so it could be if we wanted to. */ - void memsetBlob(Addr addr, uint8_t val, int size); + virtual void memsetBlob(Addr addr, uint8_t val, int size); private: @@ -220,4 +220,19 @@ class Port void blobHelper(Addr addr, uint8_t *p, int size, Command cmd); }; +/** A simple functional port that is only meant for one way communication to + * physical memory. It is only meant to be used to load data into memory before + * the simulation begins. + */ + +class FunctionalPort : public Port +{ + public: + virtual bool recvTiming(Packet &pkt) { panic("FuncPort is UniDir"); } + virtual Tick recvAtomic(Packet &pkt) { panic("FuncPort is UniDir"); } + virtual void recvFunctional(Packet &pkt) { panic("FuncPort is UniDir"); } + virtual void recvStatusChange(Status status) {panic("FuncPort is UniDir");} +}; + + #endif //__MEM_PORT_HH__ |