diff options
Diffstat (limited to 'src/mem/port.hh')
-rw-r--r-- | src/mem/port.hh | 72 |
1 files changed, 59 insertions, 13 deletions
diff --git a/src/mem/port.hh b/src/mem/port.hh index eaad9668a..53b82f66d 100644 --- a/src/mem/port.hh +++ b/src/mem/port.hh @@ -117,15 +117,67 @@ class Port }; /** Forward declaration */ +class BaseSlavePort; + +/** + * A BaseMasterPort is a protocol-agnostic master port, responsible + * only for the structural connection to a slave port. The final + * master port that inherits from the base class must override the + * bind member function for the specific slave port class. + */ +class BaseMasterPort : public Port +{ + + protected: + + BaseSlavePort* _baseSlavePort; + + BaseMasterPort(const std::string& name, MemObject* owner, + PortID id = InvalidPortID); + virtual ~BaseMasterPort(); + + public: + + virtual void bind(BaseSlavePort& slave_port) = 0; + virtual void unbind() = 0; + BaseSlavePort& getSlavePort() const; + bool isConnected() const; + +}; + +/** + * A BaseSlavePort is a protocol-agnostic slave port, responsible + * only for the structural connection to a master port. + */ +class BaseSlavePort : public Port +{ + + protected: + + BaseMasterPort* _baseMasterPort; + + BaseSlavePort(const std::string& name, MemObject* owner, + PortID id = InvalidPortID); + virtual ~BaseSlavePort(); + + public: + + BaseMasterPort& getMasterPort() const; + bool isConnected() const; + +}; + +/** Forward declaration */ class SlavePort; /** - * A MasterPort is a specialisation of a port. In addition to the - * basic functionality of sending packets to its slave peer, it also - * has functions specific to a master, e.g. to receive range changes - * or determine if the port is snooping or not. + * A MasterPort is a specialisation of a BaseMasterPort, which + * implements the default protocol for the three different level of + * transport functions. In addition to the basic functionality of + * sending packets, it also has functions to receive range changes or + * determine if the port is snooping or not. */ -class MasterPort : public Port +class MasterPort : public BaseMasterPort { friend class SlavePort; @@ -144,16 +196,13 @@ class MasterPort : public Port * Bind this master port to a slave port. This also does the * mirror action and binds the slave port to the master port. */ - void bind(SlavePort& slave_port); + void bind(BaseSlavePort& slave_port); /** * Unbind this master port and the associated slave port. */ void unbind(); - SlavePort& getSlavePort() const; - bool isConnected() const; - /** * Send an atomic request packet, where the data is moved and the * state is updated in zero time, without interleaving with other @@ -292,7 +341,7 @@ class MasterPort : public Port * has functions specific to a slave, e.g. to send range changes * and get the address ranges that the port responds to. */ -class SlavePort : public Port +class SlavePort : public BaseSlavePort { friend class MasterPort; @@ -307,9 +356,6 @@ class SlavePort : public Port PortID id = InvalidPortID); virtual ~SlavePort(); - MasterPort& getMasterPort() const; - bool isConnected() const; - /** * Send an atomic snoop request packet, where the data is moved * and the state is updated in zero time, without interleaving |