Subversion Repositories wb2axip

////////////////////////////////////////////////////////////////////////////////
//
// Filename: 	aximemsim.h
//
// Project:	Pipelined Wishbone to AXI converter
//
// Purpose:	To attempt to emulate how the MIG responds to AXI requests.
//		Of course, this is written with no knowledge of how MIG actually
//	responds, just a touch of knowledge regarding how a DDR3 memory works,
//	so ... your mileage might vary.
//
// Creator:	Dan Gisselquist, Ph.D.
//		Gisselquist Technology, LLC
//
////////////////////////////////////////////////////////////////////////////////
//
// Copyright (C) 2016, Gisselquist Technology, LLC
//
// This program is free software (firmware): you can redistribute it and/or
// modify it under the terms of  the GNU General Public License as published
// by the Free Software Foundation, either version 3 of the License, or (at
// your option) any later version.
//
// This program is distributed in the hope that it will be useful, but WITHOUT
// ANY WARRANTY; without even the implied warranty of MERCHANTIBILITY or
// FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
// for more details.
//
// You should have received a copy of the GNU General Public License along
// with this program.  (It's in the $(ROOT)/doc directory, run make with no
// target there if the PDF file isn't present.)  If not, see
// <http://www.gnu.org/licenses/> for a copy.
//
// License:	GPL, v3, as defined and found on www.gnu.org,
//		http://www.gnu.org/licenses/gpl.html
//
//
////////////////////////////////////////////////////////////////////////////////
//
//
#ifndef	AXIMEMSIM_H
#define	AXIMEMSIM_H
 
typedef	struct {
	unsigned	addr;
	int		id, len, size, burst, lock, cache, prot, qos;
	bool		ready, valid;
} AXI_AWBUS;
 
typedef	struct {
	unsigned	addr;
	int		id, len, size, burst, lock, cache, prot, qos;
	bool		ready, valid;
} AXI_ARBUS;
 
typedef	struct {
	int		strb;
	unsigned	data[4];	// 128 bits
	int		ready, valid, last;
} AXI_WBUS;
 
typedef	struct {
	int		id, resp;
	int		ready, valid;
} AXI_WRESP;
 
typedef	struct {
	int		id, resp;
	unsigned	data[4];	// 128 bits
	int		ready, valid, last;
} AXI_RDATA;
 
typedef	struct	{
	AXI_AWBUS	aw;
	AXI_ARBUS	ar;
	AXI_WBUS	w;
	AXI_WRESP	b;
	AXI_RDATA	r;
} AXIBUS;
 
class	AXIMEMSIM {
	unsigned	*m_mem;
public:
	AXIMEMSIM(unsigned abits);
	void	apply(AXIBUS &bus);
};
 
#endif