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1 | // ========== Copyright Header Begin ========================================== |
2 | // | |
3 | // OpenSPARC T2 Processor File: niu_rdmc_desp_acc_ctrl.v | |
4 | // Copyright (C) 1995-2007 Sun Microsystems, Inc. All Rights Reserved | |
5 | // 4150 Network Circle, Santa Clara, California 95054, U.S.A. | |
6 | // | |
7 | // * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. | |
8 | // | |
9 | // This program is free software; you can redistribute it and/or modify | |
10 | // it under the terms of the GNU General Public License as published by | |
11 | // the Free Software Foundation; version 2 of the License. | |
12 | // | |
13 | // This program is distributed in the hope that it will be useful, | |
14 | // but WITHOUT ANY WARRANTY; without even the implied warranty of | |
15 | // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
16 | // GNU General Public License for more details. | |
17 | // | |
18 | // You should have received a copy of the GNU General Public License | |
19 | // along with this program; if not, write to the Free Software | |
20 | // Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA | |
21 | // | |
22 | // For the avoidance of doubt, and except that if any non-GPL license | |
23 | // choice is available it will apply instead, Sun elects to use only | |
24 | // the General Public License version 2 (GPLv2) at this time for any | |
25 | // software where a choice of GPL license versions is made | |
26 | // available with the language indicating that GPLv2 or any later version | |
27 | // may be used, or where a choice of which version of the GPL is applied is | |
28 | // otherwise unspecified. | |
29 | // | |
30 | // Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa Clara, | |
31 | // CA 95054 USA or visit www.sun.com if you need additional information or | |
32 | // have any questions. | |
33 | // | |
34 | // ========== Copyright Header End ============================================ | |
35 | module niu_rdmc_desp_acc_ctrl ( | |
36 | clk, | |
37 | reset, | |
38 | rx_addr_32b_mode, | |
39 | desp_rd_req, | |
40 | fetch_desp_addr0, | |
41 | fetch_desp_addr1, | |
42 | fetch_desp_addr2, | |
43 | fetch_desp_addr3, | |
44 | fetch_desp_addr4, | |
45 | fetch_desp_addr5, | |
46 | fetch_desp_addr6, | |
47 | fetch_desp_addr7, | |
48 | fetch_desp_addr8, | |
49 | fetch_desp_addr9, | |
50 | fetch_desp_addr10, | |
51 | fetch_desp_addr11, | |
52 | fetch_desp_addr12, | |
53 | fetch_desp_addr13, | |
54 | fetch_desp_addr14, | |
55 | fetch_desp_addr15, | |
56 | fetch_desp_numb0, | |
57 | fetch_desp_numb1, | |
58 | fetch_desp_numb2, | |
59 | fetch_desp_numb3, | |
60 | fetch_desp_numb4, | |
61 | fetch_desp_numb5, | |
62 | fetch_desp_numb6, | |
63 | fetch_desp_numb7, | |
64 | fetch_desp_numb8, | |
65 | fetch_desp_numb9, | |
66 | fetch_desp_numb10, | |
67 | fetch_desp_numb11, | |
68 | fetch_desp_numb12, | |
69 | fetch_desp_numb13, | |
70 | fetch_desp_numb14, | |
71 | fetch_desp_numb15, | |
72 | dma_func_num0, | |
73 | dma_func_num1, | |
74 | dma_func_num2, | |
75 | dma_func_num3, | |
76 | dma_func_num4, | |
77 | dma_func_num5, | |
78 | dma_func_num6, | |
79 | dma_func_num7, | |
80 | dma_func_num8, | |
81 | dma_func_num9, | |
82 | dma_func_num10, | |
83 | dma_func_num11, | |
84 | dma_func_num12, | |
85 | dma_func_num13, | |
86 | dma_func_num14, | |
87 | dma_func_num15, | |
88 | rdmc_resp_accept_array, | |
89 | fetch_desp_resp_valid_array, | |
90 | meta1_rdmc_rbr_req_accept, | |
91 | meta1_rdmc_rbr_req_error, | |
92 | meta1_rdmc_rbr_resp_ready, | |
93 | meta1_rdmc_rbr_resp_cmd, | |
94 | meta1_rdmc_rbr_resp_cmd_status, | |
95 | meta1_rdmc_rbr_resp_dma_num, | |
96 | meta1_rdmc_rbr_resp_client, | |
97 | meta1_rdmc_rbr_resp_comp, | |
98 | meta1_rdmc_rbr_resp_trans_comp, | |
99 | meta1_rdmc_rbr_resp_data_valid, | |
100 | meta1_rdmc_rbr_resp_data, | |
101 | meta1_rdmc_rbr_resp_byteenable, | |
102 | meta1_rdmc_rbr_resp_data_status, | |
103 | ||
104 | rdmc_meta1_rbr_req, | |
105 | rdmc_meta1_rbr_req_cmd, | |
106 | rdmc_meta1_rbr_req_address, | |
107 | rdmc_meta1_rbr_req_length, | |
108 | rdmc_meta1_rbr_req_dma_num, | |
109 | rdmc_meta1_rbr_req_port_num, | |
110 | rdmc_meta1_rbr_req_func_num, | |
111 | rdmc_meta1_rbr_resp_accept, | |
112 | fetch_desp_gnt, | |
113 | resp_data_in_process, | |
114 | rdmc_resp_rdy_valid, | |
115 | rdmc_req_err, | |
116 | rdmc_resp_cmd, | |
117 | rdmc_resp_cmd_status, | |
118 | rdmc_resp_dma_num, | |
119 | rdmc_resp_data_valid, | |
120 | rdmc_resp_byteenable, | |
121 | rdmc_resp_comp, | |
122 | rdmc_resp_trans_comp, | |
123 | rdmc_resp_data_status, | |
124 | cache_wr_data | |
125 | ); | |
126 | ||
127 | input clk; | |
128 | input reset; | |
129 | input rx_addr_32b_mode; | |
130 | input[15:0] desp_rd_req; | |
131 | input[63:0] fetch_desp_addr0; | |
132 | input[63:0] fetch_desp_addr1; | |
133 | input[63:0] fetch_desp_addr2; | |
134 | input[63:0] fetch_desp_addr3; | |
135 | input[63:0] fetch_desp_addr4; | |
136 | input[63:0] fetch_desp_addr5; | |
137 | input[63:0] fetch_desp_addr6; | |
138 | input[63:0] fetch_desp_addr7; | |
139 | input[63:0] fetch_desp_addr8; | |
140 | input[63:0] fetch_desp_addr9; | |
141 | input[63:0] fetch_desp_addr10; | |
142 | input[63:0] fetch_desp_addr11; | |
143 | input[63:0] fetch_desp_addr12; | |
144 | input[63:0] fetch_desp_addr13; | |
145 | input[63:0] fetch_desp_addr14; | |
146 | input[63:0] fetch_desp_addr15; | |
147 | input[4:0] fetch_desp_numb0; | |
148 | input[4:0] fetch_desp_numb1; | |
149 | input[4:0] fetch_desp_numb2; | |
150 | input[4:0] fetch_desp_numb3; | |
151 | input[4:0] fetch_desp_numb4; | |
152 | input[4:0] fetch_desp_numb5; | |
153 | input[4:0] fetch_desp_numb6; | |
154 | input[4:0] fetch_desp_numb7; | |
155 | input[4:0] fetch_desp_numb8; | |
156 | input[4:0] fetch_desp_numb9; | |
157 | input[4:0] fetch_desp_numb10; | |
158 | input[4:0] fetch_desp_numb11; | |
159 | input[4:0] fetch_desp_numb12; | |
160 | input[4:0] fetch_desp_numb13; | |
161 | input[4:0] fetch_desp_numb14; | |
162 | input[4:0] fetch_desp_numb15; | |
163 | input[1:0] dma_func_num0; | |
164 | input[1:0] dma_func_num1; | |
165 | input[1:0] dma_func_num2; | |
166 | input[1:0] dma_func_num3; | |
167 | input[1:0] dma_func_num4; | |
168 | input[1:0] dma_func_num5; | |
169 | input[1:0] dma_func_num6; | |
170 | input[1:0] dma_func_num7; | |
171 | input[1:0] dma_func_num8; | |
172 | input[1:0] dma_func_num9; | |
173 | input[1:0] dma_func_num10; | |
174 | input[1:0] dma_func_num11; | |
175 | input[1:0] dma_func_num12; | |
176 | input[1:0] dma_func_num13; | |
177 | input[1:0] dma_func_num14; | |
178 | input[1:0] dma_func_num15; | |
179 | input[15:0] rdmc_resp_accept_array; | |
180 | input[15:0] fetch_desp_resp_valid_array; | |
181 | input meta1_rdmc_rbr_req_accept; | |
182 | input meta1_rdmc_rbr_req_error; | |
183 | input meta1_rdmc_rbr_resp_ready; | |
184 | input[7:0] meta1_rdmc_rbr_resp_cmd; | |
185 | input[3:0] meta1_rdmc_rbr_resp_cmd_status; | |
186 | input[4:0] meta1_rdmc_rbr_resp_dma_num; | |
187 | input meta1_rdmc_rbr_resp_client; | |
188 | input meta1_rdmc_rbr_resp_comp; | |
189 | input meta1_rdmc_rbr_resp_trans_comp; | |
190 | input meta1_rdmc_rbr_resp_data_valid; | |
191 | input[127:0] meta1_rdmc_rbr_resp_data; | |
192 | input[15:0] meta1_rdmc_rbr_resp_byteenable; | |
193 | input[3:0] meta1_rdmc_rbr_resp_data_status; | |
194 | ||
195 | output rdmc_meta1_rbr_req; | |
196 | output[7:0] rdmc_meta1_rbr_req_cmd; | |
197 | output[63:0] rdmc_meta1_rbr_req_address; | |
198 | output[13:0] rdmc_meta1_rbr_req_length; | |
199 | output[4:0] rdmc_meta1_rbr_req_dma_num; | |
200 | output[1:0] rdmc_meta1_rbr_req_port_num; | |
201 | output[1:0] rdmc_meta1_rbr_req_func_num; | |
202 | output rdmc_meta1_rbr_resp_accept; | |
203 | output[15:0] fetch_desp_gnt; | |
204 | output resp_data_in_process; | |
205 | output rdmc_resp_rdy_valid; | |
206 | output rdmc_req_err; | |
207 | output[4:0] rdmc_resp_cmd; | |
208 | output[3:0] rdmc_resp_cmd_status; | |
209 | output[4:0] rdmc_resp_dma_num; | |
210 | output rdmc_resp_data_valid; | |
211 | output[15:0] rdmc_resp_byteenable; | |
212 | output rdmc_resp_comp; | |
213 | output rdmc_resp_trans_comp; | |
214 | output[3:0] rdmc_resp_data_status; | |
215 | output[147:0] cache_wr_data; | |
216 | ||
217 | ||
218 | reg rdmc_meta1_rbr_req; | |
219 | reg[7:0] rdmc_meta1_rbr_req_cmd; | |
220 | reg[63:0] rdmc_meta1_rbr_req_address; | |
221 | reg[4:0] rdmc_meta1_rbr_req_num; | |
222 | reg[3:0] rdmc_meta1_rbr_req_dma_num_i; | |
223 | reg[1:0] rdmc_meta1_rbr_req_func_num; | |
224 | reg rdmc_meta1_rbr_resp_accept; | |
225 | ||
226 | reg rdmc_req_accept; | |
227 | reg rdmc_req_err; | |
228 | reg[7:0] rdmc_resp_cmd_f; | |
229 | reg[3:0] rdmc_resp_cmd_status; | |
230 | reg[4:0] rdmc_resp_dma_num; | |
231 | reg rdmc_resp_client; | |
232 | reg rdmc_resp_ready; | |
233 | reg rdmc_resp_comp; | |
234 | reg rdmc_resp_trans_comp; | |
235 | reg rdmc_resp_data_valid; | |
236 | reg[127:0] rdmc_resp_data; | |
237 | reg[15:0] rdmc_resp_byteenable; | |
238 | reg[3:0] rdmc_resp_data_status; | |
239 | reg[147:0] cache_wr_data; | |
240 | ||
241 | reg[1:0] state; | |
242 | reg[1:0] next_state; | |
243 | reg cycle0; | |
244 | reg cycle1; | |
245 | reg[15:0] token; | |
246 | reg[15:0] desp_rd_gnt; | |
247 | ||
248 | wire[4:0] rdmc_resp_cmd = rdmc_resp_cmd_f[4:0]; | |
249 | ||
250 | wire[3:0] desp_rd_gnt_enc; | |
251 | wire[15:0] fetch_desp_gnt; | |
252 | wire resp_data_in_process; | |
253 | wire rdmc_resp_rdy_valid; | |
254 | wire vaild_bit0; | |
255 | wire vaild_bit1; | |
256 | wire vaild_bit2; | |
257 | wire vaild_bit3; | |
258 | wire[3:0] vaild_bits = {vaild_bit3, vaild_bit2, vaild_bit1, vaild_bit0}; | |
259 | ||
260 | wire[15:0] start_mask = 16'h1111; | |
261 | wire[3:0] start_slide_num; | |
262 | wire[15:0] start_mask_slide; | |
263 | wire is_req = |desp_rd_req; | |
264 | wire[15:0] right_req; | |
265 | wire[15:0] left_req; | |
266 | wire sel_left; | |
267 | wire[15:0] req_tmp; | |
268 | wire[15:0] pre_desp_rd_gnt; | |
269 | ||
270 | ||
271 | parameter | |
272 | C0 = 2'b00, | |
273 | C1 = 2'b01, | |
274 | C2 = 2'b10; | |
275 | ||
276 | always @ (state or is_req or rdmc_req_accept) | |
277 | begin | |
278 | cycle0 = 1'b0; | |
279 | cycle1 = 1'b0; | |
280 | ||
281 | case (state) //synopsys parallel_case full_case | |
282 | ||
283 | C0: | |
284 | begin | |
285 | if (is_req) | |
286 | begin | |
287 | cycle0 = 1'b1; | |
288 | next_state = C1; | |
289 | end | |
290 | else | |
291 | next_state = state; | |
292 | end | |
293 | ||
294 | C1: | |
295 | begin | |
296 | cycle1 = 1'b1; | |
297 | next_state = C2; | |
298 | end | |
299 | ||
300 | C2: | |
301 | begin | |
302 | if (rdmc_req_accept) | |
303 | next_state = C0; | |
304 | else | |
305 | next_state = state; | |
306 | end | |
307 | ||
308 | default: | |
309 | next_state = C0; | |
310 | ||
311 | endcase | |
312 | end | |
313 | ||
314 | always @ (posedge clk) | |
315 | if (reset) | |
316 | state <= 2'b0; | |
317 | else | |
318 | state <= next_state; | |
319 | ||
320 | ||
321 | /**********************/ | |
322 | //Arbiter | |
323 | /**********************/ | |
324 | niu_rdmc_encode_32 encode_32_inst_a ( | |
325 | .din (token), | |
326 | .dout (start_slide_num) | |
327 | ); | |
328 | ||
329 | niu_rdmc_barrel_shl_32 barrel_shl_32_inst_a ( | |
330 | .din (start_mask), | |
331 | .shift (start_slide_num), | |
332 | .dout (start_mask_slide) | |
333 | ); | |
334 | ||
335 | assign right_req = desp_rd_req & ~start_mask_slide; | |
336 | assign left_req = desp_rd_req & start_mask_slide; | |
337 | ||
338 | assign sel_left = !(left_req == 16'b0); | |
339 | assign req_tmp = sel_left ? left_req : right_req; | |
340 | ||
341 | niu_rdmc_pri_encode_32 pri_encode_32_inst_a ( | |
342 | .din (req_tmp), | |
343 | .dout (pre_desp_rd_gnt) | |
344 | ); | |
345 | ||
346 | always @ (posedge clk) | |
347 | if (reset) | |
348 | token <= 16'h0001; | |
349 | else if (cycle0) | |
350 | token <= {token[14:0], token[15]}; | |
351 | else | |
352 | token <= token; | |
353 | ||
354 | always @ (posedge clk) | |
355 | if (reset) | |
356 | desp_rd_gnt <= 16'h0; | |
357 | else if (cycle0) | |
358 | desp_rd_gnt <= pre_desp_rd_gnt; | |
359 | else if (rdmc_req_accept) | |
360 | desp_rd_gnt <= 16'h0; | |
361 | else | |
362 | desp_rd_gnt <= desp_rd_gnt; | |
363 | ||
364 | assign fetch_desp_gnt = {16{rdmc_req_accept}} & desp_rd_gnt[15:0]; | |
365 | ||
366 | ||
367 | /****************************/ | |
368 | //Read Request Interface | |
369 | /****************************/ | |
370 | wire[63:0] fetch_desp_addr_tmp = {64{desp_rd_gnt[0]}} & fetch_desp_addr0 | | |
371 | {64{desp_rd_gnt[1]}} & fetch_desp_addr1 | | |
372 | {64{desp_rd_gnt[2]}} & fetch_desp_addr2 | | |
373 | {64{desp_rd_gnt[3]}} & fetch_desp_addr3 | | |
374 | {64{desp_rd_gnt[4]}} & fetch_desp_addr4 | | |
375 | {64{desp_rd_gnt[5]}} & fetch_desp_addr5 | | |
376 | {64{desp_rd_gnt[6]}} & fetch_desp_addr6 | | |
377 | {64{desp_rd_gnt[7]}} & fetch_desp_addr7 | | |
378 | {64{desp_rd_gnt[8]}} & fetch_desp_addr8 | | |
379 | {64{desp_rd_gnt[9]}} & fetch_desp_addr9 | | |
380 | {64{desp_rd_gnt[10]}} & fetch_desp_addr10 | | |
381 | {64{desp_rd_gnt[11]}} & fetch_desp_addr11 | | |
382 | {64{desp_rd_gnt[12]}} & fetch_desp_addr12 | | |
383 | {64{desp_rd_gnt[13]}} & fetch_desp_addr13 | | |
384 | {64{desp_rd_gnt[14]}} & fetch_desp_addr14 | | |
385 | {64{desp_rd_gnt[15]}} & fetch_desp_addr15; | |
386 | ||
387 | wire[4:0] fetch_desp_numb_tmp = {5{desp_rd_gnt[0]}} & fetch_desp_numb0 | | |
388 | {5{desp_rd_gnt[1]}} & fetch_desp_numb1 | | |
389 | {5{desp_rd_gnt[2]}} & fetch_desp_numb2 | | |
390 | {5{desp_rd_gnt[3]}} & fetch_desp_numb3 | | |
391 | {5{desp_rd_gnt[4]}} & fetch_desp_numb4 | | |
392 | {5{desp_rd_gnt[5]}} & fetch_desp_numb5 | | |
393 | {5{desp_rd_gnt[6]}} & fetch_desp_numb6 | | |
394 | {5{desp_rd_gnt[7]}} & fetch_desp_numb7 | | |
395 | {5{desp_rd_gnt[8]}} & fetch_desp_numb8 | | |
396 | {5{desp_rd_gnt[9]}} & fetch_desp_numb9 | | |
397 | {5{desp_rd_gnt[10]}} & fetch_desp_numb10 | | |
398 | {5{desp_rd_gnt[11]}} & fetch_desp_numb11 | | |
399 | {5{desp_rd_gnt[12]}} & fetch_desp_numb12 | | |
400 | {5{desp_rd_gnt[13]}} & fetch_desp_numb13 | | |
401 | {5{desp_rd_gnt[14]}} & fetch_desp_numb14 | | |
402 | {5{desp_rd_gnt[15]}} & fetch_desp_numb15; | |
403 | ||
404 | wire[1:0] dma_func_num_tmp = {2{desp_rd_gnt[0]}} & dma_func_num0 | | |
405 | {2{desp_rd_gnt[1]}} & dma_func_num1 | | |
406 | {2{desp_rd_gnt[2]}} & dma_func_num2 | | |
407 | {2{desp_rd_gnt[3]}} & dma_func_num3 | | |
408 | {2{desp_rd_gnt[4]}} & dma_func_num4 | | |
409 | {2{desp_rd_gnt[5]}} & dma_func_num5 | | |
410 | {2{desp_rd_gnt[6]}} & dma_func_num6 | | |
411 | {2{desp_rd_gnt[7]}} & dma_func_num7 | | |
412 | {2{desp_rd_gnt[8]}} & dma_func_num8 | | |
413 | {2{desp_rd_gnt[9]}} & dma_func_num9 | | |
414 | {2{desp_rd_gnt[10]}} & dma_func_num10 | | |
415 | {2{desp_rd_gnt[11]}} & dma_func_num11 | | |
416 | {2{desp_rd_gnt[12]}} & dma_func_num12 | | |
417 | {2{desp_rd_gnt[13]}} & dma_func_num13 | | |
418 | {2{desp_rd_gnt[14]}} & dma_func_num14 | | |
419 | {2{desp_rd_gnt[15]}} & dma_func_num15; | |
420 | ||
421 | ||
422 | niu_rdmc_encode_32 encode_32_inst_b ( | |
423 | .din (desp_rd_gnt), | |
424 | .dout (desp_rd_gnt_enc) | |
425 | ); | |
426 | ||
427 | ||
428 | wire[4:0] rdmc_meta1_rbr_req_dma_num = {1'b0, rdmc_meta1_rbr_req_dma_num_i}; | |
429 | wire[13:0] rdmc_meta1_rbr_req_length = {7'b0, rdmc_meta1_rbr_req_num[4:0], 2'b0}; | |
430 | wire[1:0] rdmc_meta1_rbr_req_port_num = 2'b0; | |
431 | ||
432 | always @ (posedge clk) | |
433 | if (reset) | |
434 | rdmc_meta1_rbr_req <= 1'b0; | |
435 | else if (cycle1) | |
436 | rdmc_meta1_rbr_req <= 1'b1; | |
437 | else if (meta1_rdmc_rbr_req_accept | meta1_rdmc_rbr_req_error) | |
438 | rdmc_meta1_rbr_req <= 1'b0; | |
439 | else | |
440 | rdmc_meta1_rbr_req <= rdmc_meta1_rbr_req; | |
441 | ||
442 | always @ (posedge clk) | |
443 | if (reset) | |
444 | rdmc_meta1_rbr_req_cmd <= 8'b0; | |
445 | else if (cycle1 & rx_addr_32b_mode) | |
446 | rdmc_meta1_rbr_req_cmd <= 8'b0000_0000; // 32 bit address | |
447 | else if (cycle1) | |
448 | rdmc_meta1_rbr_req_cmd <= 8'b0000_1000; // hardwired to 64 bit addressing | |
449 | else if (rdmc_req_accept) | |
450 | rdmc_meta1_rbr_req_cmd <= 8'b0; | |
451 | else | |
452 | rdmc_meta1_rbr_req_cmd <= rdmc_meta1_rbr_req_cmd; | |
453 | ||
454 | always @ (posedge clk) | |
455 | if (reset) | |
456 | rdmc_meta1_rbr_req_address <= 64'b0; | |
457 | else if (cycle1 & rx_addr_32b_mode) | |
458 | rdmc_meta1_rbr_req_address <= {32'b0, fetch_desp_addr_tmp[31:0]}; | |
459 | else if (cycle1) | |
460 | rdmc_meta1_rbr_req_address <= fetch_desp_addr_tmp[63:0]; | |
461 | else | |
462 | rdmc_meta1_rbr_req_address <= rdmc_meta1_rbr_req_address; | |
463 | ||
464 | always @ (posedge clk) | |
465 | if (reset) | |
466 | rdmc_meta1_rbr_req_num <= 5'b0; | |
467 | else if (cycle1) | |
468 | rdmc_meta1_rbr_req_num <= fetch_desp_numb_tmp; | |
469 | else | |
470 | rdmc_meta1_rbr_req_num <= rdmc_meta1_rbr_req_num; | |
471 | ||
472 | always @ (posedge clk) | |
473 | if (reset) | |
474 | rdmc_meta1_rbr_req_func_num <= 2'b0; | |
475 | else if (cycle1) | |
476 | rdmc_meta1_rbr_req_func_num <= dma_func_num_tmp; | |
477 | else | |
478 | rdmc_meta1_rbr_req_func_num <= rdmc_meta1_rbr_req_func_num; | |
479 | ||
480 | ||
481 | always @ (posedge clk) | |
482 | if (reset) | |
483 | rdmc_meta1_rbr_req_dma_num_i <= 4'b0; | |
484 | else if (cycle1) | |
485 | rdmc_meta1_rbr_req_dma_num_i <= desp_rd_gnt_enc; | |
486 | else | |
487 | rdmc_meta1_rbr_req_dma_num_i <= rdmc_meta1_rbr_req_dma_num_i; | |
488 | ||
489 | //Input registers | |
490 | always @ (posedge clk) | |
491 | if (reset) | |
492 | begin | |
493 | rdmc_req_accept <= 1'b0; | |
494 | rdmc_req_err <= 1'b0; | |
495 | end | |
496 | else | |
497 | begin | |
498 | rdmc_req_accept <= meta1_rdmc_rbr_req_accept; | |
499 | rdmc_req_err <= meta1_rdmc_rbr_req_error; | |
500 | end | |
501 | ||
502 | /****************************/ | |
503 | //Read Response Interface | |
504 | /****************************/ | |
505 | //Input registers | |
506 | ||
507 | always @ (posedge clk) | |
508 | if (reset) | |
509 | begin | |
510 | rdmc_resp_cmd_f <= 8'b0; | |
511 | rdmc_resp_cmd_status <= 4'b0; | |
512 | rdmc_resp_dma_num <= 5'b0; | |
513 | rdmc_resp_client <= 1'b0; | |
514 | rdmc_resp_ready <= 1'b0; | |
515 | rdmc_resp_comp <= 1'b0; | |
516 | rdmc_resp_trans_comp <= 1'b0; | |
517 | ||
518 | rdmc_resp_data_valid <= 1'b0; | |
519 | rdmc_resp_data <= 128'b0; | |
520 | rdmc_resp_byteenable <= 16'b0; | |
521 | rdmc_resp_data_status <= 4'b0; | |
522 | end | |
523 | else | |
524 | begin | |
525 | rdmc_resp_cmd_f <= meta1_rdmc_rbr_resp_cmd; | |
526 | rdmc_resp_cmd_status <= meta1_rdmc_rbr_resp_cmd_status; | |
527 | rdmc_resp_dma_num <= meta1_rdmc_rbr_resp_dma_num; | |
528 | rdmc_resp_client <= meta1_rdmc_rbr_resp_client; | |
529 | rdmc_resp_ready <= meta1_rdmc_rbr_resp_ready; | |
530 | rdmc_resp_comp <= meta1_rdmc_rbr_resp_comp; | |
531 | rdmc_resp_trans_comp <= meta1_rdmc_rbr_resp_trans_comp; | |
532 | ||
533 | rdmc_resp_data_valid <= meta1_rdmc_rbr_resp_data_valid; | |
534 | rdmc_resp_data <= meta1_rdmc_rbr_resp_data; | |
535 | rdmc_resp_byteenable <= meta1_rdmc_rbr_resp_byteenable; | |
536 | rdmc_resp_data_status <= meta1_rdmc_rbr_resp_data_status; //not used for now | |
537 | end | |
538 | ||
539 | always @ (posedge clk) | |
540 | if (reset) | |
541 | rdmc_meta1_rbr_resp_accept <= 1'b0; | |
542 | else | |
543 | rdmc_meta1_rbr_resp_accept <= |rdmc_resp_accept_array; | |
544 | ||
545 | ||
546 | assign rdmc_resp_rdy_valid = rdmc_resp_ready & rdmc_resp_client; | |
547 | assign resp_data_in_process = |fetch_desp_resp_valid_array; | |
548 | ||
549 | assign vaild_bit0 = &rdmc_resp_byteenable[3:0]; | |
550 | assign vaild_bit1 = &rdmc_resp_byteenable[7:4]; | |
551 | assign vaild_bit2 = &rdmc_resp_byteenable[11:8]; | |
552 | assign vaild_bit3 = &rdmc_resp_byteenable[15:12]; | |
553 | ||
554 | wire[32:0] rdmc_resp_data0 = {vaild_bits[0], rdmc_resp_data[31:0]}; | |
555 | wire[32:0] rdmc_resp_data1 = {vaild_bits[1], rdmc_resp_data[63:32]}; | |
556 | wire[32:0] rdmc_resp_data2 = {vaild_bits[2], rdmc_resp_data[95:64]}; | |
557 | wire[32:0] rdmc_resp_data3 = {vaild_bits[3], rdmc_resp_data[127:96]}; | |
558 | ||
559 | wire[15:0] cache_data_parity = {^rdmc_resp_data3[32:24], | |
560 | ^rdmc_resp_data3[23:16], | |
561 | ^rdmc_resp_data3[15:8], | |
562 | ^rdmc_resp_data3[7:0], | |
563 | ^rdmc_resp_data2[32:24], | |
564 | ^rdmc_resp_data2[23:16], | |
565 | ^rdmc_resp_data2[15:8], | |
566 | ^rdmc_resp_data2[7:0], | |
567 | ^rdmc_resp_data1[32:24], | |
568 | ^rdmc_resp_data1[23:16], | |
569 | ^rdmc_resp_data1[15:8], | |
570 | ^rdmc_resp_data1[7:0], | |
571 | ^rdmc_resp_data0[32:24], | |
572 | ^rdmc_resp_data0[23:16], | |
573 | ^rdmc_resp_data0[15:8], | |
574 | ^rdmc_resp_data0[7:0]}; | |
575 | ||
576 | always @ (posedge clk) | |
577 | if (reset) | |
578 | cache_wr_data <= 148'b0; | |
579 | else | |
580 | cache_wr_data <= {cache_data_parity, vaild_bits[3:0], rdmc_resp_data[127:0]}; | |
581 | ||
582 | ||
583 | endmodule | |
584 | ||
585 | ||
586 | ||
587 | ||
588 | ||
589 |