OpenCores
URL https://opencores.org/ocsvn/openrisc_2011-10-31/openrisc_2011-10-31/trunk

Subversion Repositories openrisc_2011-10-31

[/] [openrisc/] [trunk/] [orpsocv2/] [bench/] [sysc/] [src/] [OrpsocAccess.cpp] - Blame information for rev 564

Go to most recent revision | Details | Compare with Previous | View Log

Line No. Rev Author Line
1 6 julius
// ----------------------------------------------------------------------------
2
 
3
// Access functions for the ORPSoC Verilator model: implementation
4
 
5
// Copyright (C) 2008  Embecosm Limited <info@embecosm.com>
6
 
7
// Contributor Jeremy Bennett <jeremy.bennett@embecosm.com>
8 44 julius
// Contributor Julius Baxter <jb@orsoc.se>
9 6 julius
 
10
// This file is part of the cycle accurate model of the OpenRISC 1000 based
11
// system-on-chip, ORPSoC, built using Verilator.
12
 
13
// This program is free software: you can redistribute it and/or modify it
14
// under the terms of the GNU Lesser General Public License as published by
15
// the Free Software Foundation, either version 3 of the License, or (at your
16
// option) any later version.
17
 
18
// This program is distributed in the hope that it will be useful, but WITHOUT
19
// ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
20
// FITNESS FOR A PARTICULAR PURPOSE.  See the GNU Lesser General Public
21
// License for more details.
22
 
23
// You should have received a copy of the GNU Lesser General Public License
24
// along with this program.  If not, see <http://www.gnu.org/licenses/>.
25
 
26
// ----------------------------------------------------------------------------
27
 
28
// $Id: OrpsocAccess.cpp 303 2009-02-16 11:20:17Z jeremy $
29
 
30
#include "OrpsocAccess.h"
31
 
32
#include "Vorpsoc_top.h"
33
#include "Vorpsoc_top_orpsoc_top.h"
34
#include "Vorpsoc_top_or1200_top.h"
35
#include "Vorpsoc_top_or1200_cpu.h"
36
#include "Vorpsoc_top_or1200_ctrl.h"
37 44 julius
#include "Vorpsoc_top_or1200_except.h"
38
#include "Vorpsoc_top_or1200_sprs.h"
39 6 julius
#include "Vorpsoc_top_or1200_rf.h"
40
#include "Vorpsoc_top_or1200_dpram.h"
41 353 julius
// Need RAM instantiation has parameters after module name
42 439 julius
// Include for ram_wb
43
#include "Vorpsoc_top_ram_wb__A20_D20_M800000_MB17.h"
44
// Include for ram_wb_b3
45
#include "Vorpsoc_top_ram_wb_b3__pi3.h"
46 6 julius
 
47
//! Constructor for the ORPSoC access class
48
 
49
//! Initializes the pointers to the various module instances of interest
50
//! within the Verilator model.
51
 
52
//! @param[in] orpsoc  The SystemC Verilated ORPSoC instance
53
 
54 462 julius
OrpsocAccess::OrpsocAccess(Vorpsoc_top * orpsoc_top)
55 6 julius
{
56 462 julius
        // Assign processor accessor objects
57
        or1200_ctrl = orpsoc_top->v->or1200_top0->or1200_cpu->or1200_ctrl;
58
        or1200_except = orpsoc_top->v->or1200_top0->or1200_cpu->or1200_except;
59
        or1200_sprs = orpsoc_top->v->or1200_top0->or1200_cpu->or1200_sprs;
60
        rf_a = orpsoc_top->v->or1200_top0->or1200_cpu->or1200_rf->rf_a;
61
        // Assign main memory accessor objects
62
        // For old ram_wb: ram_wb_sc_sw = orpsoc_top->v->ram_wb0->ram0;
63
        //ram_wb_sc_sw = orpsoc_top->v->wb_ram_b3_0;
64
        wishbone_ram = orpsoc_top->v->ram_wb0->ram_wb_b3_0;
65 353 julius
 
66 462 julius
        // Assign arbiter accessor object
67
        //wb_arbiter = orpsoc_top->v->wb_conbus;
68 6 julius
 
69 462 julius
}                               // OrpsocAccess ()
70 6 julius
 
71 51 julius
//! Access for the ex_freeze signal
72 6 julius
 
73 51 julius
//! @return  The value of the or1200_ctrl.ex_freeze signal
74
 
75 462 julius
bool OrpsocAccess::getExFreeze()
76 51 julius
{
77 462 julius
        return or1200_ctrl->ex_freeze;
78 51 julius
 
79 462 julius
}                               // getExFreeze ()
80 51 julius
 
81 6 julius
//! Access for the wb_freeze signal
82
 
83
//! @return  The value of the or1200_ctrl.wb_freeze signal
84
 
85 462 julius
bool OrpsocAccess::getWbFreeze()
86 6 julius
{
87 462 julius
        return or1200_ctrl->wb_freeze;
88 6 julius
 
89 462 julius
}                               // getWbFreeze ()
90 6 julius
 
91 44 julius
//! Access for the except_flushpipe signal
92 6 julius
 
93 44 julius
//! @return  The value of the or1200_except.except_flushpipe signal
94
 
95 462 julius
bool OrpsocAccess::getExceptFlushpipe()
96 44 julius
{
97 462 julius
        return or1200_except->except_flushpipe;
98 44 julius
 
99 462 julius
}                               // getExceptFlushpipe ()
100 44 julius
 
101
//! Access for the ex_dslot signal
102
 
103
//! @return  The value of the or1200_except.ex_dslot signalfac
104
 
105 462 julius
bool OrpsocAccess::getExDslot()
106 44 julius
{
107 462 julius
        return or1200_except->ex_dslot;
108 44 julius
 
109 462 julius
}                               // getExDslot ()
110 44 julius
 
111 51 julius
//! Access for the except_type value
112
 
113
//! @return  The value of the or1200_except.except_type register
114
 
115 462 julius
uint32_t OrpsocAccess::getExceptType()
116 51 julius
{
117 462 julius
        return (or1200_except->get_except_type) ();
118 51 julius
 
119 462 julius
}                               // getExceptType ()
120 51 julius
 
121 49 julius
//! Access for the id_pc register
122
 
123
//! @return  The value of the or1200_except.id_pc register
124
 
125 462 julius
uint32_t OrpsocAccess::getIdPC()
126 49 julius
{
127 462 julius
        return (or1200_except->get_id_pc) ();
128 49 julius
 
129 462 julius
}                               // getIdPC ()
130 49 julius
 
131 51 julius
//! Access for the ex_pc register
132
 
133
//! @return  The value of the or1200_except.id_ex register
134
 
135 462 julius
uint32_t OrpsocAccess::getExPC()
136 51 julius
{
137 462 julius
        return (or1200_except->get_ex_pc) ();
138 51 julius
 
139 462 julius
}                               // getExPC ()
140 51 julius
 
141 44 julius
//! Access for the wb_pc register
142
 
143 49 julius
//! @return  The value of the or1200_except.wb_pc register
144 44 julius
 
145 462 julius
uint32_t OrpsocAccess::getWbPC()
146 44 julius
{
147 462 julius
        return (or1200_except->get_wb_pc) ();
148 44 julius
 
149 462 julius
}                               // getWbPC ()
150 44 julius
 
151 51 julius
//! Access for the id_insn register
152
 
153
//! @return  The value of the or1200_ctrl.wb_insn register
154
 
155 462 julius
uint32_t OrpsocAccess::getIdInsn()
156 51 julius
{
157 462 julius
        return (or1200_ctrl->get_id_insn) ();
158 51 julius
 
159 462 julius
}                               // getIdInsn ()
160 51 julius
 
161
//! Access for the ex_insn register
162
 
163
//! @return  The value of the or1200_ctrl.ex_insn register
164
 
165 462 julius
uint32_t OrpsocAccess::getExInsn()
166 51 julius
{
167 462 julius
        return (or1200_ctrl->get_ex_insn) ();
168 51 julius
 
169 462 julius
}                               // getExInsn ()
170 51 julius
 
171 6 julius
//! Access for the wb_insn register
172
 
173
//! @return  The value of the or1200_ctrl.wb_insn register
174
 
175 462 julius
uint32_t OrpsocAccess::getWbInsn()
176 6 julius
{
177 462 julius
        return (or1200_ctrl->get_wb_insn) ();
178 6 julius
 
179 462 julius
}                               // getWbInsn ()
180 6 julius
 
181 51 julius
//! Access the Wishbone SRAM memory
182 6 julius
 
183 66 julius
//! @return  The value of the 32-bit memory word at addr
184 49 julius
 
185 462 julius
uint32_t OrpsocAccess::get_mem32(uint32_t addr)
186 49 julius
{
187 462 julius
        return (wishbone_ram->get_mem32) (addr / 4);
188 49 julius
 
189 462 julius
}                               // get_mem32 ()
190 49 julius
 
191 66 julius
//! Access a byte from the Wishbone SRAM memory
192
 
193
//! @return  The value of the memory byte at addr
194
 
195 462 julius
uint8_t OrpsocAccess::get_mem8(uint32_t addr)
196 66 julius
{
197
 
198 462 julius
        uint32_t word;
199
        static uint32_t cached_word;
200
        static uint32_t cached_word_addr = 0xffffffff;
201
        int sel = addr & 0x3;   // Remember which byte we want
202
        addr = addr / 4;
203
        if (addr != cached_word_addr) {
204
                cached_word_addr = addr;
205
                // Convert address to word number here
206
                word = (wishbone_ram->get_mem8) (addr);
207
                cached_word = word;
208
        } else
209
                word = cached_word;
210 66 julius
 
211 462 julius
        switch (sel) {
212
                /* Big endian word expected */
213
        case 0:
214
                return ((word >> 24) & 0xff);
215
                break;
216
        case 1:
217
                return ((word >> 16) & 0xff);
218
                break;
219
        case 2:
220
                return ((word >> 8) & 0xff);
221
                break;
222
        case 3:
223
                return ((word >> 0) & 0xff);
224
                break;
225
        default:
226
                return 0;
227
        }
228 66 julius
 
229 462 julius
}                               // get_mem8 ()
230 66 julius
 
231 51 julius
//! Write value to the Wishbone SRAM memory
232
 
233 462 julius
void OrpsocAccess::set_mem32(uint32_t addr, uint32_t data)
234 51 julius
{
235 462 julius
        (wishbone_ram->set_mem32) (addr / 4, data);
236 51 julius
 
237 462 julius
}                               // set_mem32 ()
238 51 julius
 
239
//! Trigger the $readmemh() system call
240
 
241 462 julius
void OrpsocAccess::do_ram_readmemh(void)
242 51 julius
{
243 462 julius
        (wishbone_ram->do_readmemh) ();
244 51 julius
 
245 462 julius
}                               // do_ram_readmemh ()
246 51 julius
 
247 6 julius
//! Access for the OR1200 GPRs
248
 
249
//! These are extracted from memory using the Verilog function
250
 
251
//! @param[in] regNum  The GPR whose value is wanted
252
 
253
//! @return            The value of the GPR
254
 
255 462 julius
uint32_t OrpsocAccess::getGpr(uint32_t regNum)
256 6 julius
{
257 462 julius
        return (rf_a->get_gpr) (regNum);
258 6 julius
 
259 462 julius
}                               // getGpr ()
260 44 julius
 
261 462 julius
//! Access for the OR1200 GPRs
262 44 julius
 
263 462 julius
//! These are extracted from memory using the Verilog function
264
 
265
//! @param[in] regNum  The GPR whose value is wanted
266
//! @param[in] value   The value of GPR to write
267
 
268
void OrpsocAccess::setGpr(uint32_t regNum, uint32_t value)
269
{
270
        (rf_a->set_gpr) (regNum, value);
271
 
272
}                               // getGpr ()
273
 
274 44 julius
//! Access for the sr register
275
 
276
//! @return  The value of the or1200_sprs.sr register
277
 
278 462 julius
uint32_t OrpsocAccess::getSprSr()
279 44 julius
{
280 462 julius
        return (or1200_sprs->get_sr) ();
281 44 julius
 
282 462 julius
}                               // getSprSr ()
283 44 julius
 
284
//! Access for the epcr register
285
 
286
//! @return  The value of the or1200_sprs.epcr register
287
 
288 462 julius
uint32_t OrpsocAccess::getSprEpcr()
289 44 julius
{
290 462 julius
        return (or1200_sprs->get_epcr) ();
291 44 julius
 
292 462 julius
}                               // getSprEpcr ()
293 44 julius
 
294
//! Access for the eear register
295
 
296
//! @return  The value of the or1200_sprs.eear register
297
 
298 462 julius
uint32_t OrpsocAccess::getSprEear()
299 44 julius
{
300 462 julius
        return (or1200_sprs->get_eear) ();
301 44 julius
 
302 462 julius
}                               // getSprEear ()
303 44 julius
 
304
//! Access for the esr register
305
 
306
//! @return  The value of the or1200_sprs.esr register
307
 
308 462 julius
uint32_t OrpsocAccess::getSprEsr()
309 44 julius
{
310 462 julius
        return (or1200_sprs->get_esr) ();
311 44 julius
 
312 462 julius
}                               // getSprEsr ()
313 44 julius
 
314 353 julius
/*
315 63 julius
//! Access for the arbiter's grant signal
316
 
317
//! @return  The value of the wb_conmax_top.arb signal
318
 
319
uint8_t
320
OrpsocAccess::getWbArbGrant ()
321
{
322
  return  (wb_arbiter->get_gnt) ();
323
 
324
}       // getWbArbGrant ()
325
 
326
//! Arbiter master[mast_num] access functions
327
 
328
//! Access for the arbiter's master[mast_num] data in signal
329
 
330
//! @return  The value of the wb_conmax_top.m_dat_i[mast_num]
331
 
332
uint32_t
333
OrpsocAccess::getWbArbMastDatI (uint32_t mast_num)
334
{
335
  return  (wb_arbiter->get_m_dat_i) (mast_num);
336
 
337
}       // getWbArbMastDatI ()
338
 
339
//! Access for the arbiter's master[mast_num] data out signal
340
 
341
//! @return  The value of the wb_conmax_top.m_dat_o[mast_num]
342
 
343
uint32_t
344
OrpsocAccess::getWbArbMastDatO (uint32_t mast_num)
345
{
346
  return  (wb_arbiter->get_m_dat_o) (mast_num);
347
 
348
}       // getWbArbMastDatO ()
349
 
350
//! Access for the arbiter's master[mast_num] data out
351
 
352
//! @return  The value of the wb_conmax_top.m_adr_i[mast_num]
353
 
354
uint32_t
355
OrpsocAccess::getWbArbMastAdrI (uint32_t mast_num)
356
{
357
  return  (wb_arbiter->get_m_adr_i) (mast_num);
358
 
359
}       // getWbArbMastAdrI ()
360
 
361
//! Access for the arbiter's master[mast_num] select signal
362
 
363
//! @return  The value of the wb_conmax_top.m_sel_i[mast_num]
364
 
365
uint8_t
366
OrpsocAccess::getWbArbMastSelI (uint32_t mast_num)
367
{
368
  return  (wb_arbiter->get_m_sel_i) (mast_num);
369
 
370
}       // getWbArbMastSelI ()
371
 
372
//! Access for the arbiter's master[mast_num] decoded slave select signal
373
 
374
//! @return  The value of the wb_conmax_top.m_ssel_dec[mast_num]
375
 
376
uint8_t
377
OrpsocAccess::getWbArbMastSlaveSelDecoded (uint32_t mast_num)
378
{
379
  return  (wb_arbiter->get_m_ssel_dec) (mast_num);
380
 
381
}       // getWbArbMastSlaveSelDecoded ()
382
 
383
//! Access for the arbiter's master[mast_num] write enable signal
384
 
385
//! @return  The value of the wb_conmax_top.m_we_i[mast_num]
386
 
387
bool
388
OrpsocAccess::getWbArbMastWeI (uint32_t mast_num)
389
{
390
  return  (wb_arbiter->get_m_we_i) (mast_num);
391
 
392
}       // getWbArbMastWeI ()
393
 
394
//! Access for the arbiter's master[mast_num] cycle input signal
395
 
396
//! @return  The value of the wb_conmax_top.m_cyc_i[mast_num]
397
 
398
bool
399
OrpsocAccess::getWbArbMastCycI (uint32_t mast_num)
400
{
401
  return  (wb_arbiter->get_m_cyc_i) (mast_num);
402
 
403
}       // getWbArbMastCycI ()
404
 
405
//! Access for the arbiter's master[mast_num] strobe input signal
406
 
407
//! @return  The value of the wb_conmax_top.m_stb_i[mast_num]
408
 
409
bool
410
OrpsocAccess::getWbArbMastStbI (uint32_t mast_num)
411
{
412
  return  (wb_arbiter->get_m_stb_i) (mast_num);
413
 
414
}       // getWbArbMastStbI ()
415
 
416
//! Access for the arbiter's master[mast_num] ACK output signal
417
 
418
//! @return  The value of the wb_conmax_top.m_ack_o[mast_num]
419
 
420
bool
421
OrpsocAccess::getWbArbMastAckO (uint32_t mast_num)
422
{
423
  return  (wb_arbiter->get_m_ack_o) (mast_num);
424
 
425
}       // getWbArbMastAckO ()
426
 
427
//! Access for the arbiter's master[mast_num] error input signal
428
 
429
//! @return  The value of the wb_conmax_top.m_err_o[mast_num]
430
 
431
bool
432
OrpsocAccess::getWbArbMastErrO (uint32_t mast_num)
433
{
434
  return  (wb_arbiter->get_m_err_o) (mast_num);
435
 
436
}       // getWbArbMastErrO ()
437
 
438 353 julius
*/

powered by: WebSVN 2.1.0

© copyright 1999-2024 OpenCores.org, equivalent to Oliscience, all rights reserved. OpenCores®, registered trademark.