1 |
2 |
acastong |
//databuffer_l2_tb.h
|
2 |
|
|
/* ***** BEGIN LICENSE BLOCK *****
|
3 |
|
|
* Version: MPL 1.1
|
4 |
|
|
*
|
5 |
|
|
* The contents of this file are subject to the Mozilla Public License Version
|
6 |
|
|
* 1.1 (the "License"); you may not use this file except in compliance with
|
7 |
|
|
* the License. You may obtain a copy of the License at
|
8 |
|
|
* http://www.mozilla.org/MPL/
|
9 |
|
|
*
|
10 |
|
|
* Software distributed under the License is distributed on an "AS IS" basis,
|
11 |
|
|
* WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
|
12 |
|
|
* for the specific language governing rights and limitations under the
|
13 |
|
|
* License.
|
14 |
|
|
*
|
15 |
|
|
* The Original Code is HyperTransport Tunnel IP Core.
|
16 |
|
|
*
|
17 |
|
|
* The Initial Developer of the Original Code is
|
18 |
|
|
* Ecole Polytechnique de Montreal.
|
19 |
|
|
* Portions created by the Initial Developer are Copyright (C) 2005
|
20 |
|
|
* the Initial Developer. All Rights Reserved.
|
21 |
|
|
*
|
22 |
|
|
* Contributor(s):
|
23 |
|
|
* Ami Castonguay <acastong@grm.polymtl.ca>
|
24 |
|
|
*
|
25 |
|
|
* Alternatively, the contents of this file may be used under the terms
|
26 |
|
|
* of the Polytechnique HyperTransport Tunnel IP Core Source Code License
|
27 |
|
|
* (the "PHTICSCL License", see the file PHTICSCL.txt), in which case the
|
28 |
|
|
* provisions of PHTICSCL License are applicable instead of those
|
29 |
|
|
* above. If you wish to allow use of your version of this file only
|
30 |
|
|
* under the terms of the PHTICSCL License and not to allow others to use
|
31 |
|
|
* your version of this file under the MPL, indicate your decision by
|
32 |
|
|
* deleting the provisions above and replace them with the notice and
|
33 |
|
|
* other provisions required by the PHTICSCL License. If you do not delete
|
34 |
|
|
* the provisions above, a recipient may use your version of this file
|
35 |
|
|
* under either the MPL or the PHTICSCL License."
|
36 |
|
|
*
|
37 |
|
|
* ***** END LICENSE BLOCK ***** */
|
38 |
|
|
|
39 |
|
|
#ifndef DATABUFFER_L2_TB_H
|
40 |
|
|
#define DATABUFFER_L2_TB_H
|
41 |
|
|
|
42 |
|
|
#include "../../rtl/systemc/core_synth/synth_datatypes.h"
|
43 |
|
|
#include "../../rtl/systemc/core_synth/constants.h"
|
44 |
|
|
|
45 |
|
|
///Testbench for the the databuffer_l2 module
|
46 |
|
|
/**
|
47 |
|
|
@class databuffer_l2_tb
|
48 |
|
|
@author Ami Castonguay
|
49 |
|
|
@description Testbench for the databuffer. The testbench is seperated in
|
50 |
|
|
several processes :
|
51 |
|
|
- Generating random data buffer packets
|
52 |
|
|
- Randomly read entries from the read ports
|
53 |
|
|
- Generate nop received signals and verify validity of nop requests
|
54 |
|
|
- simulate the memories that the databuffer uses
|
55 |
|
|
*/
|
56 |
|
|
class databuffer_l2_tb : public sc_module {
|
57 |
|
|
|
58 |
|
|
public:
|
59 |
|
|
|
60 |
|
|
/// Global system cold reset signal.
|
61 |
|
|
sc_out< bool > resetx;
|
62 |
|
|
/// LDTSTOP (power saving mode)
|
63 |
|
|
sc_out< bool > ldtstopx;
|
64 |
|
|
/// Global system clock signal.
|
65 |
|
|
sc_in_clk clk;
|
66 |
|
|
|
67 |
|
|
/// Command Decoder data.
|
68 |
|
|
sc_out< sc_bv<32> > cd_data_db;
|
69 |
|
|
/// Command Decoder data length in dword, minus 1.
|
70 |
|
|
sc_out< sc_uint<4> > cd_datalen_db;
|
71 |
|
|
/// Command Decoder virtual channel of the data
|
72 |
|
|
sc_out< VirtualChannel > cd_vctype_db;
|
73 |
|
|
/// Command Decoder write request flag
|
74 |
|
|
sc_out< bool > cd_write_db;
|
75 |
|
|
/// Command Decoder flag for getting the address of the data
|
76 |
|
|
sc_out< bool > cd_getaddr_db;
|
77 |
|
|
|
78 |
|
|
#ifdef RETRY_MODE_ENABLED
|
79 |
|
|
/// Command Decoder flag for erasing data
|
80 |
|
|
sc_out< bool > cd_drop_db;
|
81 |
|
|
///Link initiates retry disconnect (must reset buffer count)
|
82 |
|
|
sc_out< bool > lk_initiate_retry_disconnect;
|
83 |
|
|
///Command decoder initiates retry disconnect (must reset buffer count)
|
84 |
|
|
sc_out< bool > cd_initiate_retry_disconnect;
|
85 |
|
|
///If the retry mode is activated
|
86 |
|
|
sc_out< bool > csr_retry;
|
87 |
|
|
#endif
|
88 |
|
|
/// Command Decoder return address of the sent data
|
89 |
|
|
sc_in< sc_uint<BUFFERS_ADDRESS_WIDTH> > db_address_cd;
|
90 |
|
|
|
91 |
|
|
/// Error Handler address of the data to drop
|
92 |
|
|
sc_out< sc_uint<BUFFERS_ADDRESS_WIDTH> > eh_address_db;
|
93 |
|
|
/// Error Handler virtual channel of the data to drop
|
94 |
|
|
sc_out< VirtualChannel > eh_vctype_db;
|
95 |
|
|
/// Error Handler flag for erasing data
|
96 |
|
|
sc_out< bool > eh_erase_db;
|
97 |
|
|
|
98 |
|
|
/// CSR address of data to read
|
99 |
|
|
sc_out< sc_uint<BUFFERS_ADDRESS_WIDTH> > csr_address_db;
|
100 |
|
|
/// CSR flag to read data
|
101 |
|
|
sc_out< bool > csr_read_db;
|
102 |
|
|
/// CSR virtual channel of data to read
|
103 |
|
|
sc_out< VirtualChannel > csr_vctype_db;
|
104 |
|
|
|
105 |
|
|
/// User Interface address of data to read
|
106 |
|
|
sc_out< sc_uint<BUFFERS_ADDRESS_WIDTH> > ui_address_db;
|
107 |
|
|
/// User Interface flag to read data
|
108 |
|
|
sc_out< bool > ui_read_db;
|
109 |
|
|
/// User Interface virtual channel of data to read
|
110 |
|
|
sc_out< VirtualChannel > ui_vctype_db;
|
111 |
|
|
|
112 |
|
|
/// Data for the accepted destination (shared CSR and UI output)
|
113 |
|
|
/** The output is selected by the ui_grant_csr_access_db signal*/
|
114 |
|
|
sc_in< sc_bv<32> > db_data_accepted;
|
115 |
|
|
///CSR has done reading the packet and it can be erased
|
116 |
|
|
sc_out< bool > csr_erase_db;
|
117 |
|
|
///UI has done reading the packet and it can be erased
|
118 |
|
|
sc_out< bool > ui_erase_db;
|
119 |
|
|
|
120 |
|
|
|
121 |
|
|
/// Forward address of data to read
|
122 |
|
|
sc_out< sc_uint<BUFFERS_ADDRESS_WIDTH> > fwd_address_db;
|
123 |
|
|
/// Forward flag to read data
|
124 |
|
|
sc_out< bool > fwd_read_db;
|
125 |
|
|
/// Forward virtual channel of data to read
|
126 |
|
|
sc_out< VirtualChannel > fwd_vctype_db;
|
127 |
|
|
/// Forward return data
|
128 |
|
|
sc_in< sc_bv<32> > db_data_fwd;
|
129 |
|
|
/// Forward return flag meaning the last data forming the packet
|
130 |
|
|
sc_out< bool > fwd_erase_db;
|
131 |
|
|
|
132 |
|
|
/// Flow Control flag meaning a NOP packet was sent
|
133 |
|
|
sc_out< bool > fc_nop_sent;
|
134 |
|
|
/// Flow Control return free buffers counters since last NOP request
|
135 |
|
|
/** [5,4]: nonposted; [3,2]: posted; [1,0]: response.*/
|
136 |
|
|
sc_in< sc_bv<6> > db_buffer_cnt_fc;
|
137 |
|
|
/// Flow Control return flag for a request of a NOP packet.
|
138 |
|
|
sc_in< bool > db_nop_req_fc;
|
139 |
|
|
///Activated when we receive more data than we can store
|
140 |
|
|
sc_in< bool > db_overflow_csr;
|
141 |
|
|
|
142 |
|
|
///UI grants databuffer access to CSR (accepted port is shared)
|
143 |
|
|
/**By default, the accepted port is for the UI. When the UI grants the right
|
144 |
|
|
of access to the CSR, it becomes the CSR's right. The grant signal is read
|
145 |
|
|
to know what data to output.*/
|
146 |
|
|
sc_out<bool> ui_grant_csr_access_db;
|
147 |
|
|
|
148 |
|
|
///When an error is detected in the testbench
|
149 |
|
|
sc_out<bool> error;
|
150 |
|
|
|
151 |
|
|
////////////////////////////////////
|
152 |
|
|
//Interface to memory - synchronous
|
153 |
|
|
////////////////////////////////////
|
154 |
|
|
|
155 |
|
|
///Interface to databuffer memories. See databuffer_l2 documentation for more details
|
156 |
|
|
//@{
|
157 |
|
|
sc_in<bool> memory_write;
|
158 |
|
|
sc_in<sc_uint<2> > memory_write_address_vc;
|
159 |
|
|
sc_in<sc_uint<BUFFERS_ADDRESS_WIDTH> > memory_write_address_buffer;
|
160 |
|
|
sc_in<sc_uint<4> > memory_write_address_pos;
|
161 |
|
|
sc_in<sc_bv<32> > memory_write_data;
|
162 |
|
|
|
163 |
|
|
sc_in<sc_uint<2> > memory_read_address_vc[2];
|
164 |
|
|
sc_in<sc_uint<BUFFERS_ADDRESS_WIDTH> >memory_read_address_buffer[2];
|
165 |
|
|
sc_in<sc_uint<4> > memory_read_address_pos[2];
|
166 |
|
|
|
167 |
|
|
sc_out<sc_bv<32> > memory_output[2];
|
168 |
|
|
//@}
|
169 |
|
|
|
170 |
|
|
///SystemC Macro
|
171 |
|
|
SC_HAS_PROCESS(databuffer_l2_tb);
|
172 |
|
|
|
173 |
|
|
///This is the memory used by the databuffer
|
174 |
|
|
int memory[3][DATABUFFER_NB_BUFFERS][16];
|
175 |
|
|
|
176 |
|
|
///Actual data entries to keep track of what is stored in the databuffers
|
177 |
|
|
int data_packets[3][DATABUFFER_NB_BUFFERS][16];
|
178 |
|
|
/// A size of 0 means no data in the buffer
|
179 |
|
|
int data_packets_size[3][DATABUFFER_NB_BUFFERS];
|
180 |
|
|
///The count of packets in the three virtual channels
|
181 |
|
|
int data_packets_count[3];
|
182 |
|
|
///The number of packets that can be sent to the databuffer for every VirtualChannel
|
183 |
|
|
/**Changes by nops sent, packet sent and received, reset and disconenct sequences*/
|
184 |
|
|
int data_packets_allowed[3];
|
185 |
|
|
///If the testbench is allowed to overflow the databuffer
|
186 |
|
|
bool allow_overflow;
|
187 |
|
|
|
188 |
|
|
///Constructor
|
189 |
|
|
databuffer_l2_tb(sc_module_name name);
|
190 |
|
|
|
191 |
|
|
///Process to read the data available at the databuffer output
|
192 |
|
|
/**
|
193 |
|
|
Test reading the ports of the databuffer. Check that the data matches
|
194 |
|
|
what was sent in the databuffer. There are four read ports tested, the
|
195 |
|
|
port for the FWD, CSR and UI to read data. The CSR and UI ports are shared,
|
196 |
|
|
meaning that only one can read at the time. The last port is a "drop" port for
|
197 |
|
|
the error handler, to simply erase a complete packet when it's not needed.
|
198 |
|
|
*/
|
199 |
|
|
void read_data();
|
200 |
|
|
|
201 |
|
|
///Process to generate data packets for the databuffer
|
202 |
|
|
/**
|
203 |
|
|
Send data to the databuffer. Generate data packets, random data and
|
204 |
|
|
sometime drop the data. The data being pushed in is stored in
|
205 |
|
|
the variable data_packets so it can be checked at the outout.
|
206 |
|
|
*/
|
207 |
|
|
void store_data();
|
208 |
|
|
///Process that simulates the memories used by the databuffer
|
209 |
|
|
void manage_memories();
|
210 |
|
|
///Process that
|
211 |
|
|
void manage_nops();
|
212 |
|
|
///Drives reset at the beggining of the simulation
|
213 |
|
|
void manage_reset();
|
214 |
|
|
///Convert VC signals to traceable signals
|
215 |
|
|
/** Signals like cd_vctype_db are not traceable by default because they use the
|
216 |
|
|
VirtualChannel enum type. This process converts thos enums to ints so they
|
217 |
|
|
can be traced.
|
218 |
|
|
*/
|
219 |
|
|
void convert_vcs();
|
220 |
|
|
|
221 |
|
|
/** Traceable signals created by ::convert_vcs() */
|
222 |
|
|
///@{
|
223 |
|
|
sc_signal<sc_uint<2> > cd_vctype_db_trace;
|
224 |
|
|
sc_signal<sc_uint<2> > eh_vctype_db_trace;
|
225 |
|
|
sc_signal<sc_uint<2> > csr_vctype_db_trace;
|
226 |
|
|
sc_signal<sc_uint<2> > ui_vctype_db_trace;
|
227 |
|
|
sc_signal<sc_uint<2> > fwd_vctype_db_trace;
|
228 |
|
|
///@}
|
229 |
|
|
};
|
230 |
|
|
|
231 |
|
|
#endif
|