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/*
* Copyright (c) 2009 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 LIBRUBY_H
#define LIBRUBY_H
#include <stdint.h>
#include <ostream>
#include "mem/packet.hh"
typedef void* RubyPortHandle;
enum RubyRequestType {
RubyRequestType_NULL,
RubyRequestType_IFETCH,
RubyRequestType_LD,
RubyRequestType_ST,
RubyRequestType_Locked_Read,
RubyRequestType_Locked_Write,
RubyRequestType_RMW_Read,
RubyRequestType_RMW_Write,
RubyRequestType_NUM
};
enum RubyAccessMode {
RubyAccessMode_User,
RubyAccessMode_Supervisor,
RubyAccessMode_Device
};
struct RubyRequest {
uint64_t paddr;
uint8_t* data;
int len;
uint64_t pc;
RubyRequestType type;
RubyAccessMode access_mode;
PacketPtr pkt;
unsigned proc_id;
RubyRequest() {}
RubyRequest(uint64_t _paddr,
uint8_t* _data,
int _len,
uint64_t _pc,
RubyRequestType _type,
RubyAccessMode _access_mode,
PacketPtr _pkt,
unsigned _proc_id = 100)
: paddr(_paddr),
data(_data),
len(_len),
pc(_pc),
type(_type),
access_mode(_access_mode),
pkt(_pkt),
proc_id(_proc_id)
{}
};
std::ostream& operator<<(std::ostream& out, const RubyRequest& obj);
/**
* Initialize the system. cfg_file is a Ruby-lang configuration script
*/
void libruby_init(const char* cfg_file);
/**
* Tear down a configured system. Must be invoked after a call to libruby_init.
*/
void libruby_destroy();
/**
* Print the last error encountered by ruby. Currently unimplemented.
*/
const char* libruby_last_error();
/**
* Retrieve a handle to a RubyPort object, identified by name in the
* configuration. You also pass in the callback function you want
* this port to use when a request completes. Only one handle to a
* port is allowed at a time.
*/
RubyPortHandle libruby_get_port(const char* name, void (*hit_callback)(int64_t access_id));
/**
* Retrieve a handle to a RubyPort object, identified by name in the
* configuration.
*/
RubyPortHandle libruby_get_port_by_name(const char* name);
/**
* issue_request returns a unique access_id to identify the ruby
* transaction. This access_id is later returned to the caller via
* hit_callback (passed to libruby_get_port)
*/
int64_t libruby_issue_request(RubyPortHandle p, struct RubyRequest request);
/**
* writes data directly into Ruby's data array. Note that this
* ignores caches, and should be considered incoherent after
* simulation starts.
*/
void libruby_write_ram(uint64_t paddr, uint8_t * data, int len);
/**
* reads data directory from Ruby's data array. Note that this
* ignores caches, and should be considered incoherent after
* simulation starts
*/
void libruby_read_ram(uint64_t paddr, uint8_t * data, int len);
/**
* tick the system n cycles. Eventually, will return the number of
* cycles until the next event, but for now it always returns 0
*/
int libruby_tick(int n);
/**
* self explainitory
*/
void libruby_print_config(std::ostream & out);
/**
* self explainitory
*/
void libruby_print_stats(std::ostream & out);
/**
* does not return until done
*/
void libruby_playback_trace(char * trace_filename);
/*
* enables the tracer and opens the trace file
*/
void libruby_start_tracing(char * record_filename);
/*
* closes the trace file
*/
void libruby_stop_tracing();
/**
* get time
*/
uint64_t libruby_get_time();
#endif
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