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gem5
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gem5
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#include <hdlcd.hh>
Public Member Functions | |
| DmaEngine (HDLcd &_parent, size_t size, unsigned request_size, unsigned max_pending, size_t line_size, ssize_t line_pitch, unsigned num_lines) | |
| void | startFrame (Addr fb_base) |
| void | abortFrame () |
| void | dumpSettings () |
| void | serialize (CheckpointOut &cp) const override |
| Serialize an object. More... | |
| void | unserialize (CheckpointIn &cp) override |
| Unserialize an object. More... | |
 Public Member Functions inherited from DmaReadFifo | |
| DmaReadFifo (DmaPort &port, size_t size, unsigned max_req_size, unsigned max_pending, Request::Flags flags=0) | |
| ~DmaReadFifo () | |
| void | serialize (CheckpointOut &cp) const override |
| Serialize an object. More... | |
| void | unserialize (CheckpointIn &cp) override |
| Unserialize an object. More... | |
| DrainState | drain () override |
| Notify an object that it needs to drain its state. More... | |
| bool | tryGet (uint8_t *dst, size_t len) |
| Try to read data from the FIFO. More... | |
| template<typename T > | |
| bool | tryGet (T &value) |
| void | get (uint8_t *dst, size_t len) |
| Read data from the FIFO and panic on failure. More... | |
| template<typename T > | |
| T | get () |
| size_t | size () const |
| Get the amount of data stored in the FIFO. More... | |
| void | flush () |
| Flush the FIFO. More... | |
| void | startFill (Addr start, size_t size) |
| Start filling the FIFO. More... | |
| void | stopFill () |
| Stop the DMA engine. More... | |
| bool | atEndOfBlock () const |
| Has the DMA engine sent out the last request for the active block? More... | |
| bool | isActive () const |
| Is the DMA engine active (i.e., are there still in-flight accesses)? More... | |
| Public Member Functions inherited from Drainable | |
| DrainState | drainState () const |
| Return the current drain state of an object. More... | |
| virtual void | notifyFork () |
| Notify a child process of a fork. More... | |
| Public Member Functions inherited from Serializable | |
| Serializable () | |
| virtual | ~Serializable () |
| void | serializeSection (CheckpointOut &cp, const char *name) const |
| Serialize an object into a new section. More... | |
| void | serializeSection (CheckpointOut &cp, const std::string &name) const |
| void | unserializeSection (CheckpointIn &cp, const char *name) |
| Unserialize an a child object. More... | |
| void | unserializeSection (CheckpointIn &cp, const std::string &name) |
Protected Member Functions | |
| void | onEndOfBlock () override |
| End of block callback. More... | |
| void | onIdle () override |
| Last response received callback. More... | |
Callbacks | |
| Protected Member Functions inherited from Drainable | |
| Drainable () | |
| virtual | ~Drainable () |
| virtual void | drainResume () |
| Resume execution after a successful drain. More... | |
| void | signalDrainDone () const |
| Signal that an object is drained. More... | |
Protected Attributes | |
| HDLcd & | parent |
| const size_t | lineSize |
| const ssize_t | linePitch |
| const unsigned | numLines |
| Addr | nextLineAddr |
| Addr | frameEnd |
Additional Inherited Members | |
| Static Public Member Functions inherited from Serializable | |
| static const std::string & | currentSection () |
| Get the fully-qualified name of the active section. More... | |
| static void | serializeAll (const std::string &cpt_dir) |
| static void | unserializeGlobals (CheckpointIn &cp) |
| Static Public Attributes inherited from Serializable | |
| static int | ckptCount = 0 |
| static int | ckptMaxCount = 0 |
| static int | ckptPrevCount = -1 |
| HDLcd::DmaEngine::DmaEngine | ( | HDLcd & | _parent, |
| size_t | size, | ||
| unsigned | request_size, | ||
| unsigned | max_pending, | ||
| size_t | line_size, | ||
| ssize_t | line_pitch, | ||
| unsigned | num_lines | ||
| ) |
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overrideprotectedvirtual |
End of block callback.
This callback is called once after the last access in a block has been sent. It is legal for a derived class to call startFill() from this method to initiate a transfer.
Reimplemented from DmaReadFifo.
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overrideprotectedvirtual |
Last response received callback.
This callback is called when the DMA engine becomes idle (i.e., there are no pending requests).
It is possible for a DMA engine to reach the end of block and become idle at the same tick. In such a case, the onEndOfBlock() callback will be called first. This callback will NOT be called if that callback initiates a new DMA transfer.
Reimplemented from DmaReadFifo.
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overridevirtual |
Serialize an object.
Output an object's state into the current checkpoint section.
| cp | Checkpoint state |
Implements Serializable.
Definition at line 613 of file hdlcd.cc.
References DmaReadFifo::serialize(), and SERIALIZE_SCALAR.
| void HDLcd::DmaEngine::startFrame | ( | Addr | fb_base | ) |
Definition at line 631 of file hdlcd.cc.
References HDLcd::fb_base.
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overridevirtual |
Unserialize an object.
Read an object's state from the current checkpoint section.
| cp | Checkpoint state |
Implements Serializable.
Definition at line 622 of file hdlcd.cc.
References DmaReadFifo::unserialize(), and UNSERIALIZE_SCALAR.