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#ifndef LIBRUBY_H
#define LIBRUBY_H
#include <stdint.h>
#include <ostream>
typedef void* RubyPortHandle;
enum RubyRequestType {
RubyRequestType_NULL,
RubyRequestType_IFETCH,
RubyRequestType_LD,
RubyRequestType_ST,
RubyRequestType_RMW
};
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;
RubyRequest() {}
RubyRequest(uint64_t _paddr, uint8_t* _data, int _len, uint64_t _pc, RubyRequestType _type, RubyAccessMode _access_mode)
: paddr(_paddr), data(_data), len(_len), pc(_pc), type(_type), access_mode(_access_mode)
{}
};
/**
* 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);
/**
* get time
*/
uint64_t libruby_get_time();
#endif
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