f3b4d10a05
This patch changes the implementation of Ruby's recvTiming() function so that it pushes a packet in to the Sequencer instead of a RubyRequest. This requires changes in the Sequencer's makeRequest() and issueRequest() functions, as they also need to operate on a Packet instead of RubyRequest.
75 lines
2.5 KiB
C++
75 lines
2.5 KiB
C++
/*
|
|
* Copyright (c) 2008 Mark D. Hill and David A. Wood
|
|
* All rights reserved.
|
|
*
|
|
* Redistribution and use in source and binary forms, with or without
|
|
* modification, are permitted provided that the following conditions are
|
|
* met: redistributions of source code must retain the above copyright
|
|
* notice, this list of conditions and the following disclaimer;
|
|
* redistributions in binary form must reproduce the above copyright
|
|
* notice, this list of conditions and the following disclaimer in the
|
|
* documentation and/or other materials provided with the distribution;
|
|
* neither the name of the copyright holders nor the names of its
|
|
* contributors may be used to endorse or promote products derived from
|
|
* this software without specific prior written permission.
|
|
*
|
|
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
|
|
* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
|
|
* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
|
|
* A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
|
|
* OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
|
|
* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
|
|
* LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
|
|
* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
|
|
* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
|
|
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
|
|
* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
|
|
*/
|
|
|
|
#ifndef __MEM_RUBY_SYSTEM_DMASEQUENCER_HH__
|
|
#define __MEM_RUBY_SYSTEM_DMASEQUENCER_HH__
|
|
|
|
#include <ostream>
|
|
|
|
#include "mem/ruby/common/DataBlock.hh"
|
|
#include "mem/ruby/system/RubyPort.hh"
|
|
#include "params/DMASequencer.hh"
|
|
|
|
struct DMARequest
|
|
{
|
|
uint64_t start_paddr;
|
|
int len;
|
|
bool write;
|
|
int bytes_completed;
|
|
int bytes_issued;
|
|
uint8* data;
|
|
PacketPtr pkt;
|
|
};
|
|
|
|
class DMASequencer : public RubyPort
|
|
{
|
|
public:
|
|
typedef DMASequencerParams Params;
|
|
DMASequencer(const Params *);
|
|
void init();
|
|
/* external interface */
|
|
RequestStatus makeRequest(PacketPtr pkt);
|
|
bool busy() { return m_is_busy;}
|
|
|
|
/* SLICC callback */
|
|
void dataCallback(const DataBlock & dblk);
|
|
void ackCallback();
|
|
|
|
void printConfig(std::ostream & out);
|
|
|
|
private:
|
|
void issueNext();
|
|
|
|
private:
|
|
bool m_is_busy;
|
|
uint64_t m_data_block_mask;
|
|
DMARequest active_request;
|
|
int num_active_requests;
|
|
};
|
|
|
|
#endif // __MEM_RUBY_SYSTEM_DMASEQUENCER_HH__
|