Line data Source code
1 : // SPDX-License-Identifier: Apache-2.0
2 : // Copyright 2020 Western Digital Corporation or its affiliates.
3 : //
4 : // Licensed under the Apache License, Version 2.0 (the "License");
5 : // you may not use this file except in compliance with the License.
6 : // You may obtain a copy of the License at
7 : //
8 : // http://www.apache.org/licenses/LICENSE-2.0
9 : //
10 : // Unless required by applicable law or agreed to in writing, software
11 : // distributed under the License is distributed on an "AS IS" BASIS,
12 : // WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
13 : // See the License for the specific language governing permissions and
14 : // limitations under the License.
15 :
16 : //********************************************************************************
17 : // $Id$
18 : //
19 : //
20 : // Owner:
21 : // Function: LSU control
22 : // Comments:
23 : //
24 : //
25 : // DC1 -> DC2 -> DC3 -> DC4 (Commit)
26 : //
27 : //********************************************************************************
28 : module el2_lsu_lsc_ctl
29 : import el2_pkg::*;
30 : #(
31 : `include "el2_param.vh"
32 : )(
33 316 : input logic rst_l, // reset, active low
34 0 : input logic clk_override, // Override non-functional clock gating
35 61843746 : input logic clk, // Clock only while core active. Through one clock header. For flops with second clock header built in. Connected to ACTIVE_L2CLK.
36 :
37 : // clocks per pipe
38 61843746 : input logic lsu_c1_m_clk,
39 61843746 : input logic lsu_c1_r_clk,
40 61843746 : input logic lsu_c2_m_clk,
41 61843746 : input logic lsu_c2_r_clk,
42 61843746 : input logic lsu_store_c1_m_clk,
43 :
44 0 : input logic [31:0] lsu_ld_data_r, // Load data R-stage
45 24694 : input logic [31:0] lsu_ld_data_corr_r, // ECC corrected data R-stage
46 4 : input logic lsu_single_ecc_error_r, // ECC single bit error R-stage
47 4 : input logic lsu_double_ecc_error_r, // ECC double bit error R-stage
48 :
49 54452 : input logic [31:0] lsu_ld_data_m, // Load data M-stage
50 4 : input logic lsu_single_ecc_error_m, // ECC single bit error M-stage
51 4 : input logic lsu_double_ecc_error_m, // ECC double bit error M-stage
52 :
53 58638 : input logic flush_m_up, // Flush M and D stage
54 29654 : input logic flush_r, // Flush R-stage
55 36568 : input logic ldst_dual_d, // load/store is unaligned at 32 bit boundary D-stage
56 36568 : input logic ldst_dual_m, // load/store is unaligned at 32 bit boundary M-stage
57 36568 : input logic ldst_dual_r, // load/store is unaligned at 32 bit boundary R-stage
58 :
59 413833 : input logic [31:0] exu_lsu_rs1_d, // address
60 81386 : input logic [31:0] exu_lsu_rs2_d, // store data
61 :
62 623945 : input el2_lsu_pkt_t lsu_p, // lsu control packet
63 2276073 : input logic dec_lsu_valid_raw_d, // Raw valid for address computation
64 270518 : input logic [11:0] dec_lsu_offset_d, // 12b offset for load/store addresses
65 :
66 0 : input logic [31:0] picm_mask_data_m, // PIC data M-stage
67 200 : input logic [31:0] bus_read_data_m, // the bus return data
68 38395 : output logic [31:0] lsu_result_m, // lsu load data
69 29134 : output logic [31:0] lsu_result_corr_r, // This is the ECC corrected data going to RF
70 : // lsu address down the pipe
71 594111 : output logic [31:0] lsu_addr_d,
72 594110 : output logic [31:0] lsu_addr_m,
73 594109 : output logic [31:0] lsu_addr_r,
74 : // lsu address down the pipe - needed to check unaligned
75 594149 : output logic [31:0] end_addr_d,
76 594510 : output logic [31:0] end_addr_m,
77 594509 : output logic [31:0] end_addr_r,
78 : // store data down the pipe
79 81386 : output logic [31:0] store_data_m,
80 :
81 0 : input logic [31:0] dec_tlu_mrac_ff, // CSR for memory region control
82 60 : output logic lsu_exc_m, // Access or misaligned fault
83 29240 : output logic is_sideeffects_m, // is sideffects space
84 2279496 : output logic lsu_commit_r, // lsu instruction in r commits
85 4 : output logic lsu_single_ecc_error_incr,// LSU inc SB error counter
86 4 : output el2_lsu_error_pkt_t lsu_error_pkt_r, // lsu exception packet
87 :
88 24694 : output logic [31:1] lsu_fir_addr, // fast interrupt address
89 0 : output logic [1:0] lsu_fir_error, // Error during fast interrupt lookup
90 :
91 : // address in dccm/pic/external per pipe stage
92 614420 : output logic addr_in_dccm_d,
93 614420 : output logic addr_in_dccm_m,
94 614420 : output logic addr_in_dccm_r,
95 :
96 0 : output logic addr_in_pic_d,
97 0 : output logic addr_in_pic_m,
98 0 : output logic addr_in_pic_r,
99 :
100 614746 : output logic addr_external_m,
101 :
102 : // DMA slave
103 0 : input logic dma_dccm_req,
104 0 : input logic [31:0] dma_mem_addr,
105 0 : input logic [2:0] dma_mem_sz,
106 18 : input logic dma_mem_write,
107 12 : input logic [63:0] dma_mem_wdata,
108 :
109 : // Store buffer related signals
110 478232 : output el2_lsu_pkt_t lsu_pkt_d,
111 478184 : output el2_lsu_pkt_t lsu_pkt_m,
112 478181 : output el2_lsu_pkt_t lsu_pkt_r,
113 :
114 167732 : input logic lsu_pmp_error_start,
115 167732 : input logic lsu_pmp_error_end,
116 :
117 0 : input logic scan_mode // Scan mode
118 :
119 : );
120 :
121 13 : logic [31:3] end_addr_pre_m, end_addr_pre_r;
122 594111 : logic [31:0] full_addr_d;
123 594149 : logic [31:0] full_end_addr_d;
124 476238 : logic [31:0] lsu_rs1_d;
125 270136 : logic [11:0] lsu_offset_d;
126 476238 : logic [31:0] rs1_d;
127 270136 : logic [11:0] offset_d;
128 283348 : logic [12:0] end_addr_offset_d;
129 0 : logic [2:0] addr_offset_d;
130 :
131 12 : logic [63:0] dma_mem_wdata_shifted;
132 614747 : logic addr_external_d;
133 614746 : logic addr_external_r;
134 0 : logic access_fault_d, misaligned_fault_d;
135 0 : logic access_fault_m, misaligned_fault_m;
136 :
137 0 : logic fir_dccm_access_error_d, fir_nondccm_access_error_d;
138 0 : logic fir_dccm_access_error_m, fir_nondccm_access_error_m;
139 :
140 0 : logic [3:0] exc_mscause_d, exc_mscause_m;
141 476238 : logic [31:0] rs1_d_raw;
142 81386 : logic [31:0] store_data_d, store_data_pre_m, store_data_m_in;
143 198 : logic [31:0] bus_read_data_r;
144 :
145 18 : el2_lsu_pkt_t dma_pkt_d;
146 478184 : el2_lsu_pkt_t lsu_pkt_m_in, lsu_pkt_r_in;
147 4 : el2_lsu_error_pkt_t lsu_error_pkt_m;
148 :
149 :
150 : // Premux the rs1/offset for dma
151 : assign lsu_rs1_d[31:0] = dec_lsu_valid_raw_d ? exu_lsu_rs1_d[31:0] : dma_mem_addr[31:0];
152 : assign lsu_offset_d[11:0] = dec_lsu_offset_d[11:0] & {12{dec_lsu_valid_raw_d}};
153 : assign rs1_d_raw[31:0] = lsu_rs1_d[31:0];
154 : assign offset_d[11:0] = lsu_offset_d[11:0];
155 :
156 : assign rs1_d[31:0] = (lsu_pkt_d.load_ldst_bypass_d) ? lsu_result_m[31:0] : rs1_d_raw[31:0];
157 :
158 : // generate the ls address
159 : rvlsadder lsadder (.rs1(rs1_d[31:0]),
160 : .offset(offset_d[11:0]),
161 : .dout(full_addr_d[31:0])
162 : );
163 :
164 : // Module to generate the memory map of the address
165 : el2_lsu_addrcheck addrcheck (
166 : .start_addr_d(full_addr_d[31:0]),
167 : .end_addr_d(full_end_addr_d[31:0]),
168 : .rs1_region_d(rs1_d[31:28]),
169 : .*
170 : );
171 :
172 : // Calculate start/end address for load/store
173 : assign addr_offset_d[2:0] = ({3{lsu_pkt_d.half}} & 3'b01) | ({3{lsu_pkt_d.word}} & 3'b11) | ({3{lsu_pkt_d.dword}} & 3'b111);
174 : assign end_addr_offset_d[12:0] = {offset_d[11],offset_d[11:0]} + {9'b0,addr_offset_d[2:0]};
175 : assign full_end_addr_d[31:0] = rs1_d[31:0] + {{19{end_addr_offset_d[12]}},end_addr_offset_d[12:0]};
176 : assign end_addr_d[31:0] = full_end_addr_d[31:0];
177 : assign lsu_exc_m = access_fault_m | misaligned_fault_m;
178 :
179 : // Goes to TLU to increment the ECC error counter
180 : assign lsu_single_ecc_error_incr = (lsu_single_ecc_error_r & ~lsu_double_ecc_error_r) & (lsu_commit_r | lsu_pkt_r.dma) & lsu_pkt_r.valid;
181 :
182 : if (pt.LOAD_TO_USE_PLUS1 == 1) begin: L2U_Plus1_1
183 : logic access_fault_r, misaligned_fault_r;
184 : logic [3:0] exc_mscause_r;
185 : logic fir_dccm_access_error_r, fir_nondccm_access_error_r;
186 :
187 : // Generate exception packet
188 : assign lsu_error_pkt_r.exc_valid = (access_fault_r | misaligned_fault_r | lsu_double_ecc_error_r) & lsu_pkt_r.valid & ~lsu_pkt_r.dma & ~lsu_pkt_r.fast_int;
189 : assign lsu_error_pkt_r.single_ecc_error = lsu_single_ecc_error_r & ~lsu_error_pkt_r.exc_valid & ~lsu_pkt_r.dma;
190 : assign lsu_error_pkt_r.inst_type = lsu_pkt_r.store;
191 : assign lsu_error_pkt_r.exc_type = ~misaligned_fault_r;
192 : assign lsu_error_pkt_r.mscause[3:0] = (lsu_double_ecc_error_r & ~misaligned_fault_r & ~access_fault_r) ? 4'h1 : exc_mscause_r[3:0];
193 : assign lsu_error_pkt_r.addr[31:0] = lsu_addr_r[31:0];
194 :
195 : assign lsu_fir_error[1:0] = fir_nondccm_access_error_r ? 2'b11 : (fir_dccm_access_error_r ? 2'b10 : ((lsu_pkt_r.fast_int & lsu_double_ecc_error_r) ? 2'b01 : 2'b00));
196 :
197 : rvdff #(1) access_fault_rff (.din(access_fault_m), .dout(access_fault_r), .clk(lsu_c1_r_clk), .*);
198 : rvdff #(1) misaligned_fault_rff (.din(misaligned_fault_m), .dout(misaligned_fault_r), .clk(lsu_c1_r_clk), .*);
199 : rvdff #(4) exc_mscause_rff (.din(exc_mscause_m[3:0]), .dout(exc_mscause_r[3:0]), .clk(lsu_c1_r_clk), .*);
200 : rvdff #(1) fir_dccm_access_error_mff (.din(fir_dccm_access_error_m), .dout(fir_dccm_access_error_r), .clk(lsu_c1_r_clk), .*);
201 : rvdff #(1) fir_nondccm_access_error_mff (.din(fir_nondccm_access_error_m), .dout(fir_nondccm_access_error_r), .clk(lsu_c1_r_clk), .*);
202 :
203 : end else begin: L2U_Plus1_0
204 : logic [1:0] lsu_fir_error_m;
205 :
206 : // Generate exception packet
207 : assign lsu_error_pkt_m.exc_valid = (access_fault_m | misaligned_fault_m | lsu_double_ecc_error_m) & lsu_pkt_m.valid & ~lsu_pkt_m.dma & ~lsu_pkt_m.fast_int & ~flush_m_up;
208 : assign lsu_error_pkt_m.single_ecc_error = lsu_single_ecc_error_m & ~lsu_error_pkt_m.exc_valid & ~lsu_pkt_m.dma;
209 : assign lsu_error_pkt_m.inst_type = lsu_pkt_m.store;
210 : assign lsu_error_pkt_m.exc_type = ~misaligned_fault_m;
211 : assign lsu_error_pkt_m.mscause[3:0] = (lsu_double_ecc_error_m & ~misaligned_fault_m & ~access_fault_m) ? 4'h1 : exc_mscause_m[3:0];
212 : assign lsu_error_pkt_m.addr[31:0] = lsu_addr_m[31:0];
213 :
214 : assign lsu_fir_error_m[1:0] = fir_nondccm_access_error_m ? 2'b11 : (fir_dccm_access_error_m ? 2'b10 : ((lsu_pkt_m.fast_int & lsu_double_ecc_error_m) ? 2'b01 : 2'b00));
215 :
216 : rvdff #(1) lsu_exc_valid_rff (.*, .din(lsu_error_pkt_m.exc_valid), .dout(lsu_error_pkt_r.exc_valid), .clk(lsu_c2_r_clk));
217 : rvdff #(1) lsu_single_ecc_error_rff(.*, .din(lsu_error_pkt_m.single_ecc_error), .dout(lsu_error_pkt_r.single_ecc_error), .clk(lsu_c2_r_clk));
218 : rvdffe #($bits(el2_lsu_error_pkt_t)-2) lsu_error_pkt_rff (.*, .din(lsu_error_pkt_m[$bits(el2_lsu_error_pkt_t)-1:2]), .dout(lsu_error_pkt_r[$bits(el2_lsu_error_pkt_t)-1:2]), .en(lsu_error_pkt_m.exc_valid | lsu_error_pkt_m.single_ecc_error | clk_override));
219 : rvdff #(2) lsu_fir_error_rff (.*, .din(lsu_fir_error_m[1:0]), .dout(lsu_fir_error[1:0]), .clk(lsu_c2_r_clk));
220 : end
221 :
222 : //Create DMA packet
223 317 : always_comb begin
224 317 : dma_pkt_d = '0;
225 317 : dma_pkt_d.valid = dma_dccm_req;
226 317 : dma_pkt_d.dma = 1'b1;
227 317 : dma_pkt_d.store = dma_mem_write;
228 317 : dma_pkt_d.load = ~dma_mem_write;
229 317 : dma_pkt_d.by = (dma_mem_sz[2:0] == 3'b0);
230 317 : dma_pkt_d.half = (dma_mem_sz[2:0] == 3'b1);
231 317 : dma_pkt_d.word = (dma_mem_sz[2:0] == 3'b10);
232 317 : dma_pkt_d.dword = (dma_mem_sz[2:0] == 3'b11);
233 : end
234 :
235 317 : always_comb begin
236 317 : lsu_pkt_d = dec_lsu_valid_raw_d ? lsu_p : dma_pkt_d;
237 317 : lsu_pkt_m_in = lsu_pkt_d;
238 317 : lsu_pkt_r_in = lsu_pkt_m;
239 :
240 317 : lsu_pkt_d.valid = (lsu_p.valid & ~(flush_m_up & ~lsu_p.fast_int)) | dma_dccm_req;
241 317 : lsu_pkt_m_in.valid = lsu_pkt_d.valid & ~(flush_m_up & ~lsu_pkt_d.dma);
242 317 : lsu_pkt_r_in.valid = lsu_pkt_m.valid & ~(flush_m_up & ~lsu_pkt_m.dma) ;
243 : end
244 :
245 : // C2 clock for valid and C1 for other bits of packet
246 : rvdff #(1) lsu_pkt_vldmff (.*, .din(lsu_pkt_m_in.valid), .dout(lsu_pkt_m.valid), .clk(lsu_c2_m_clk));
247 : rvdff #(1) lsu_pkt_vldrff (.*, .din(lsu_pkt_r_in.valid), .dout(lsu_pkt_r.valid), .clk(lsu_c2_r_clk));
248 :
249 : rvdff #($bits(el2_lsu_pkt_t)-1) lsu_pkt_mff (.*, .din(lsu_pkt_m_in[$bits(el2_lsu_pkt_t)-1:1]), .dout(lsu_pkt_m[$bits(el2_lsu_pkt_t)-1:1]), .clk(lsu_c1_m_clk));
250 : rvdff #($bits(el2_lsu_pkt_t)-1) lsu_pkt_rff (.*, .din(lsu_pkt_r_in[$bits(el2_lsu_pkt_t)-1:1]), .dout(lsu_pkt_r[$bits(el2_lsu_pkt_t)-1:1]), .clk(lsu_c1_r_clk));
251 :
252 :
253 :
254 : if (pt.LOAD_TO_USE_PLUS1 == 1) begin: L2U1_Plus1_1
255 : logic [31:0] lsu_ld_datafn_r, lsu_ld_datafn_corr_r;
256 :
257 : assign lsu_ld_datafn_r[31:0] = addr_external_r ? bus_read_data_r[31:0] : lsu_ld_data_r[31:0];
258 : assign lsu_ld_datafn_corr_r[31:0] = addr_external_r ? bus_read_data_r[31:0] : lsu_ld_data_corr_r[31:0];
259 :
260 : // this is really R stage signal
261 : assign lsu_result_m[31:0] = ({32{ lsu_pkt_r.unsign & lsu_pkt_r.by }} & {24'b0,lsu_ld_datafn_r[7:0]}) |
262 : ({32{ lsu_pkt_r.unsign & lsu_pkt_r.half}} & {16'b0,lsu_ld_datafn_r[15:0]}) |
263 : ({32{~lsu_pkt_r.unsign & lsu_pkt_r.by }} & {{24{ lsu_ld_datafn_r[7]}}, lsu_ld_datafn_r[7:0]}) |
264 : ({32{~lsu_pkt_r.unsign & lsu_pkt_r.half}} & {{16{ lsu_ld_datafn_r[15]}},lsu_ld_datafn_r[15:0]}) |
265 : ({32{lsu_pkt_r.word}} & lsu_ld_datafn_r[31:0]);
266 :
267 : // this signal is used for gpr update
268 : assign lsu_result_corr_r[31:0] = ({32{ lsu_pkt_r.unsign & lsu_pkt_r.by }} & {24'b0,lsu_ld_datafn_corr_r[7:0]}) |
269 : ({32{ lsu_pkt_r.unsign & lsu_pkt_r.half}} & {16'b0,lsu_ld_datafn_corr_r[15:0]}) |
270 : ({32{~lsu_pkt_r.unsign & lsu_pkt_r.by }} & {{24{ lsu_ld_datafn_corr_r[7]}}, lsu_ld_datafn_corr_r[7:0]}) |
271 : ({32{~lsu_pkt_r.unsign & lsu_pkt_r.half}} & {{16{ lsu_ld_datafn_corr_r[15]}},lsu_ld_datafn_corr_r[15:0]}) |
272 : ({32{lsu_pkt_r.word}} & lsu_ld_datafn_corr_r[31:0]);
273 :
274 : end else begin: L2U1_Plus1_0 // block: L2U1_Plus1_1
275 : logic [31:0] lsu_ld_datafn_m, lsu_ld_datafn_corr_r;
276 :
277 : assign lsu_ld_datafn_m[31:0] = addr_external_m ? bus_read_data_m[31:0] : lsu_ld_data_m[31:0];
278 : assign lsu_ld_datafn_corr_r[31:0] = addr_external_r ? bus_read_data_r[31:0] : lsu_ld_data_corr_r[31:0];
279 :
280 : // this result must look at prior stores and merge them in
281 : assign lsu_result_m[31:0] = ({32{ lsu_pkt_m.unsign & lsu_pkt_m.by }} & {24'b0,lsu_ld_datafn_m[7:0]}) |
282 : ({32{ lsu_pkt_m.unsign & lsu_pkt_m.half}} & {16'b0,lsu_ld_datafn_m[15:0]}) |
283 : ({32{~lsu_pkt_m.unsign & lsu_pkt_m.by }} & {{24{ lsu_ld_datafn_m[7]}}, lsu_ld_datafn_m[7:0]}) |
284 : ({32{~lsu_pkt_m.unsign & lsu_pkt_m.half}} & {{16{ lsu_ld_datafn_m[15]}},lsu_ld_datafn_m[15:0]}) |
285 : ({32{lsu_pkt_m.word}} & lsu_ld_datafn_m[31:0]);
286 :
287 : // this signal is used for gpr update
288 : assign lsu_result_corr_r[31:0] = ({32{ lsu_pkt_r.unsign & lsu_pkt_r.by }} & {24'b0,lsu_ld_datafn_corr_r[7:0]}) |
289 : ({32{ lsu_pkt_r.unsign & lsu_pkt_r.half}} & {16'b0,lsu_ld_datafn_corr_r[15:0]}) |
290 : ({32{~lsu_pkt_r.unsign & lsu_pkt_r.by }} & {{24{ lsu_ld_datafn_corr_r[7]}}, lsu_ld_datafn_corr_r[7:0]}) |
291 : ({32{~lsu_pkt_r.unsign & lsu_pkt_r.half}} & {{16{ lsu_ld_datafn_corr_r[15]}},lsu_ld_datafn_corr_r[15:0]}) |
292 : ({32{lsu_pkt_r.word}} & lsu_ld_datafn_corr_r[31:0]);
293 : end
294 :
295 : // Fast interrupt address
296 : assign lsu_fir_addr[31:1] = lsu_ld_data_corr_r[31:1];
297 :
298 : // absence load/store all 0's
299 : assign lsu_addr_d[31:0] = full_addr_d[31:0];
300 :
301 : // Interrupt as a flush source allows the WB to occur
302 : assign lsu_commit_r = lsu_pkt_r.valid & (lsu_pkt_r.store | lsu_pkt_r.load) & ~flush_r & ~lsu_pkt_r.dma;
303 :
304 : assign dma_mem_wdata_shifted[63:0] = 64'(dma_mem_wdata[63:0] >> {dma_mem_addr[2:0], 3'b000}); // Shift the dma data to lower bits to make it consistent to lsu stores
305 : assign store_data_d[31:0] = dma_dccm_req ? dma_mem_wdata_shifted[31:0] : exu_lsu_rs2_d[31:0]; // Write to PIC still happens in r stage
306 :
307 : assign store_data_m_in[31:0] = (lsu_pkt_d.store_data_bypass_d) ? lsu_result_m[31:0] : store_data_d[31:0];
308 :
309 : assign store_data_m[31:0] = (picm_mask_data_m[31:0] | {32{~addr_in_pic_m}}) & ((lsu_pkt_m.store_data_bypass_m) ? lsu_result_m[31:0] : store_data_pre_m[31:0]);
310 :
311 :
312 : rvdff #(32) sdmff (.*, .din(store_data_m_in[31:0]), .dout(store_data_pre_m[31:0]), .clk(lsu_store_c1_m_clk));
313 :
314 : rvdff #(32) samff (.*, .din(lsu_addr_d[31:0]), .dout(lsu_addr_m[31:0]), .clk(lsu_c1_m_clk));
315 : rvdff #(32) sarff (.*, .din(lsu_addr_m[31:0]), .dout(lsu_addr_r[31:0]), .clk(lsu_c1_r_clk));
316 :
317 : assign end_addr_m[31:3] = ldst_dual_m ? end_addr_pre_m[31:3] : lsu_addr_m[31:3]; // This is for power saving
318 : assign end_addr_r[31:3] = ldst_dual_r ? end_addr_pre_r[31:3] : lsu_addr_r[31:3]; // This is for power saving
319 :
320 : rvdffe #(29) end_addr_hi_mff (.*, .din(end_addr_d[31:3]), .dout(end_addr_pre_m[31:3]), .en((lsu_pkt_d.valid & ldst_dual_d) | clk_override));
321 : rvdffe #(29) end_addr_hi_rff (.*, .din(end_addr_m[31:3]), .dout(end_addr_pre_r[31:3]), .en((lsu_pkt_m.valid & ldst_dual_m) | clk_override));
322 :
323 : rvdff #(3) end_addr_lo_mff (.*, .din(end_addr_d[2:0]), .dout(end_addr_m[2:0]), .clk(lsu_c1_m_clk));
324 : rvdff #(3) end_addr_lo_rff (.*, .din(end_addr_m[2:0]), .dout(end_addr_r[2:0]), .clk(lsu_c1_r_clk));
325 :
326 : rvdff #(1) addr_in_dccm_mff(.din(addr_in_dccm_d), .dout(addr_in_dccm_m), .clk(lsu_c1_m_clk), .*);
327 : rvdff #(1) addr_in_dccm_rff(.din(addr_in_dccm_m), .dout(addr_in_dccm_r), .clk(lsu_c1_r_clk), .*);
328 :
329 : rvdff #(1) addr_in_pic_mff(.din(addr_in_pic_d), .dout(addr_in_pic_m), .clk(lsu_c1_m_clk), .*);
330 : rvdff #(1) addr_in_pic_rff(.din(addr_in_pic_m), .dout(addr_in_pic_r), .clk(lsu_c1_r_clk), .*);
331 :
332 : rvdff #(1) addr_external_mff(.din(addr_external_d), .dout(addr_external_m), .clk(lsu_c1_m_clk), .*);
333 : rvdff #(1) addr_external_rff(.din(addr_external_m), .dout(addr_external_r), .clk(lsu_c1_r_clk), .*);
334 :
335 : rvdff #(1) access_fault_mff (.din(access_fault_d), .dout(access_fault_m), .clk(lsu_c1_m_clk), .*);
336 : rvdff #(1) misaligned_fault_mff (.din(misaligned_fault_d), .dout(misaligned_fault_m), .clk(lsu_c1_m_clk), .*);
337 : rvdff #(4) exc_mscause_mff (.din(exc_mscause_d[3:0]), .dout(exc_mscause_m[3:0]), .clk(lsu_c1_m_clk), .*);
338 :
339 : rvdff #(1) fir_dccm_access_error_mff (.din(fir_dccm_access_error_d), .dout(fir_dccm_access_error_m), .clk(lsu_c1_m_clk), .*);
340 : rvdff #(1) fir_nondccm_access_error_mff (.din(fir_nondccm_access_error_d), .dout(fir_nondccm_access_error_m), .clk(lsu_c1_m_clk), .*);
341 :
342 : rvdffe #(32) bus_read_data_r_ff (.*, .din(bus_read_data_m[31:0]), .dout(bus_read_data_r[31:0]), .en(addr_external_m | clk_override));
343 :
344 : endmodule
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