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resolve bug "Conflicting initialization values for \index"

This commit is contained in:
AngeloJacobo 2023-11-11 10:18:15 +08:00
parent b9b49d67ab
commit 33ec101b79
1 changed files with 52 additions and 53 deletions
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105
rtl/ddr3_controller.v
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@ -40,7 +40,7 @@ module ddr3_controller #(
COL_BITS = 10, //width of column address
BA_BITS = 3, //width of bank address
DQ_BITS = 8, //width of DQ
LANES = 8, //lanes of DQ
LANES = 2, //lanes of DQ
AUX_WIDTH = 4, //width of aux line (must be >= 4)
WB2_ADDR_BITS = 7, //width of 2nd wishbone address bus
WB2_DATA_BITS = 32, //width of 2nd wishbone data bus
@ -494,7 +494,7 @@ module ddr3_controller #(
for(index = 0; index < MAX_ADDED_READ_ACK_DELAY; index = index + 1) begin
o_wb_ack_read_q[index] = 0;
end
for(index=0; index < (1<<BA_BITS); index=index+1) begin
bank_status_q[index] = 0;
bank_status_d[index] = 0;
@ -518,7 +518,7 @@ module ddr3_controller #(
shift_reg_read_pipe_q[index] = 0;
shift_reg_read_pipe_d[index] = 0;
end
//set all commands to all 1's makig CS_n high (thus commands are initially NOP)
for(index=0; index < 4; index=index+1) begin
cmd_d[index] = -1;
@ -2495,8 +2495,7 @@ ALTERNATE_WRITE_READ: if(!o_wb_stall_calib) begin
reg[4:0] f_index = 0;
reg[5:0] f_counter = 0;
reg[4:0] f_index_1 = 0;
reg[4:0] f_index_2 = 0;
reg[4:0] f_index_1;
reg[F_TEST_CMD_DATA_WIDTH - 1:0] f_write_data;
reg f_write_fifo = 0, f_read_fifo = 0;
reg[ROW_BITS-1:0] f_bank_active_row[(1<<BA_BITS)-1:0];
@ -2968,15 +2967,15 @@ ALTERNATE_WRITE_READ: if(!o_wb_stall_calib) begin
always @* begin
assert(f_bank_status == bank_status_q);
end
(*keep*) reg[31:0] bank;
always @(posedge i_controller_clk) begin
if(sync_rst_controller) begin
//reset bank status and active row
for(index=0; index < (1<<BA_BITS); index=index+1) begin
f_bank_status[index] <= 0;
f_bank_status_2[index] = 0;
f_bank_active_row[index] <= 0;
for(f_index_1=0; f_index_1 < (1<<BA_BITS); f_index_1=f_index_1+1) begin
f_bank_status[f_index_1] <= 0;
f_bank_status_2[f_index_1] = 0;
f_bank_active_row[f_index_1] <= 0;
end
end
else begin
@ -2984,8 +2983,8 @@ ALTERNATE_WRITE_READ: if(!o_wb_stall_calib) begin
if(cmd_d[PRECHARGE_SLOT][CMD_CS_N:CMD_WE_N] == 4'b0010) begin //PRECHARGE
bank = cmd_d[PRECHARGE_SLOT][CMD_BANK_START:CMD_ADDRESS_START+1];
if(cmd_d[PRECHARGE_SLOT][10]) begin //A10 precharge all banks
for(index=0; index < (1<<BA_BITS); index=index+1) begin
f_bank_status_2[index] = 0;
for(f_index_1=0; f_index_1 < (1<<BA_BITS); f_index_1=f_index_1+1) begin
f_bank_status_2[f_index_1] = 0;
end
end
else begin
@ -3061,11 +3060,11 @@ ALTERNATE_WRITE_READ: if(!o_wb_stall_calib) begin
end
if(state_calibrate <= ISSUE_READ) begin
for(index = 0; index < 1; index = index + 1) begin
assert(o_wb_ack_read_q[index] == 0);
for(f_index_1 = 0; f_index_1 < 1; f_index_1 = f_index_1 + 1) begin
assert(o_wb_ack_read_q[f_index_1] == 0);
end
for(index = 0; index < READ_ACK_PIPE_WIDTH; index = index + 1) begin
assert(shift_reg_read_pipe_q[index] == 0);
for(f_index_1 = 0; f_index_1 < READ_ACK_PIPE_WIDTH; f_index_1 = f_index_1 + 1) begin
assert(shift_reg_read_pipe_q[f_index_1] == 0);
end
end
@ -3105,22 +3104,22 @@ ALTERNATE_WRITE_READ: if(!o_wb_stall_calib) begin
if(state_calibrate != IDLE) assume(added_read_pipe_max == 1);
f_sum_of_pending_acks = stage1_pending + stage2_pending;
for(index = 0; index < READ_ACK_PIPE_WIDTH; index = index + 1) begin
f_sum_of_pending_acks = f_sum_of_pending_acks + shift_reg_read_pipe_q[index][0] + 0;
for(f_index_1 = 0; f_index_1 < READ_ACK_PIPE_WIDTH; f_index_1 = f_index_1 + 1) begin
f_sum_of_pending_acks = f_sum_of_pending_acks + shift_reg_read_pipe_q[f_index_1][0] + 0;
end
for(index = 0; index < 2; index = index + 1) begin //since added_read_pipe_max is assumed to be one, only the first two bits of o_wb_ack_read_q is relevant
f_sum_of_pending_acks = f_sum_of_pending_acks + o_wb_ack_read_q[index][0] + 0;
for(f_index_1 = 0; f_index_1 < 2; f_index_1 = f_index_1 + 1) begin //since added_read_pipe_max is assumed to be one, only the first two bits of o_wb_ack_read_q is relevant
f_sum_of_pending_acks = f_sum_of_pending_acks + o_wb_ack_read_q[f_index_1][0] + 0;
end
//the remaining o_wb_ack_read_q (>2) should stay zero at
//all instance
for(index = 2; index < MAX_ADDED_READ_ACK_DELAY ; index = index + 1) begin
assert(o_wb_ack_read_q[index] == 0);
for(f_index_1 = 2; f_index_1 < MAX_ADDED_READ_ACK_DELAY ; f_index_1 = f_index_1 + 1) begin
assert(o_wb_ack_read_q[f_index_1] == 0);
end
f_aux_ack_pipe_after_stage2[READ_ACK_PIPE_WIDTH+1] = o_wb_ack_read_q[0]; //last stage of f_aux_ack_pipe_after_stage2 is also the last ack stage
f_aux_ack_pipe_after_stage2[READ_ACK_PIPE_WIDTH] = o_wb_ack_read_q[1];
for(index = 0; index < READ_ACK_PIPE_WIDTH; index = index + 1) begin
f_aux_ack_pipe_after_stage2[READ_ACK_PIPE_WIDTH - 1 - index] = shift_reg_read_pipe_q[index];
for(f_index_1 = 0; f_index_1 < READ_ACK_PIPE_WIDTH; f_index_1 = f_index_1 + 1) begin
f_aux_ack_pipe_after_stage2[READ_ACK_PIPE_WIDTH - 1 - f_index_1] = shift_reg_read_pipe_q[f_index_1];
end
f_ack_pipe_after_stage2 = {
o_wb_ack_read_q[0][0],
@ -3160,15 +3159,15 @@ ALTERNATE_WRITE_READ: if(!o_wb_stall_calib) begin
end
f_ack_pipe_marker = 0;
for(index = 0; index < READ_ACK_PIPE_WIDTH + 2; index = index + 1) begin //check each ack stage starting from last stage
if(f_aux_ack_pipe_after_stage2[index][0]) begin //if ack is high
if(f_aux_ack_pipe_after_stage2[index][AUX_WIDTH:1] == 1) begin //ack for read
for(f_index_1 = 0; f_index_1 < READ_ACK_PIPE_WIDTH + 2; f_index_1 = f_index_1 + 1) begin //check each ack stage starting from last stage
if(f_aux_ack_pipe_after_stage2[f_index_1][0]) begin //if ack is high
if(f_aux_ack_pipe_after_stage2[f_index_1][AUX_WIDTH:1] == 1) begin //ack for read
assert(f_ack_pipe_marker == 0); //read ack must be the last ack on the pipe(f_pipe_marker must still be zero)
f_ack_pipe_marker = f_ack_pipe_marker + 1;
assert(!stage1_pending && !stage2_pending); //a single read request must be the last request on this calibration
end
else begin //ack for write
assert(f_aux_ack_pipe_after_stage2[index][AUX_WIDTH:1] == 0);
assert(f_aux_ack_pipe_after_stage2[f_index_1][AUX_WIDTH:1] == 0);
f_ack_pipe_marker = f_ack_pipe_marker + 1;
end
end
@ -3229,11 +3228,11 @@ ALTERNATE_WRITE_READ: if(!o_wb_stall_calib) begin
//test the delay_before*
always @* begin
for(index=0; index< (1<<BA_BITS); index=index+1) begin
assert(delay_before_precharge_counter_q[index] <= max(ACTIVATE_TO_PRECHARGE_DELAY, max(WRITE_TO_PRECHARGE_DELAY,READ_TO_PRECHARGE_DELAY)));
assert(delay_before_activate_counter_q[index] <= PRECHARGE_TO_ACTIVATE_DELAY);
assert(delay_before_write_counter_q[index] <= (max(READ_TO_WRITE_DELAY,ACTIVATE_TO_WRITE_DELAY) + 1) );
assert(delay_before_read_counter_q[index] <= (max(WRITE_TO_READ_DELAY,ACTIVATE_TO_READ_DELAY)) + 1);
for(f_index_1=0; f_index_1< (1<<BA_BITS); f_index_1=f_index_1+1) begin
assert(delay_before_precharge_counter_q[f_index_1] <= max(ACTIVATE_TO_PRECHARGE_DELAY, max(WRITE_TO_PRECHARGE_DELAY,READ_TO_PRECHARGE_DELAY)));
assert(delay_before_activate_counter_q[f_index_1] <= PRECHARGE_TO_ACTIVATE_DELAY);
assert(delay_before_write_counter_q[f_index_1] <= (max(READ_TO_WRITE_DELAY,ACTIVATE_TO_WRITE_DELAY) + 1) );
assert(delay_before_read_counter_q[f_index_1] <= (max(WRITE_TO_READ_DELAY,ACTIVATE_TO_READ_DELAY)) + 1);
end
if(stage2_pending) begin
if(delay_before_precharge_counter_q[stage2_bank] == max(ACTIVATE_TO_PRECHARGE_DELAY, max(WRITE_TO_PRECHARGE_DELAY,READ_TO_PRECHARGE_DELAY))) begin
@ -3260,9 +3259,9 @@ ALTERNATE_WRITE_READ: if(!o_wb_stall_calib) begin
end
/*
for(index = 0; index <= PRECHARGE_TO_ACTIVATE_DELAY; index= index +1 ) begin
if(delay_before_activate_counter_q[stage2_bank] == PRECHARGE_TO_ACTIVATE_DELAY - index) begin
assert(f_ackwait_count <= (max(WRITE_TO_PRECHARGE_DELAY,READ_TO_PRECHARGE_DELAY) + 1 + index));
for(f_index_1 = 0; f_index_1 <= PRECHARGE_TO_ACTIVATE_DELAY; f_index_1= f_index_1 +1 ) begin
if(delay_before_activate_counter_q[stage2_bank] == PRECHARGE_TO_ACTIVATE_DELAY - f_index_1) begin
assert(f_ackwait_count <= (max(WRITE_TO_PRECHARGE_DELAY,READ_TO_PRECHARGE_DELAY) + 1 + f_index_1));
end
end
*/
@ -3278,11 +3277,11 @@ ALTERNATE_WRITE_READ: if(!o_wb_stall_calib) begin
reg[6:0] f_write_time_stamp[(1<<BA_BITS)-1:0];
reg[6:0] f_timer = 0;
initial begin
for(index=0; index < (1<<BA_BITS); index=index+1) begin
f_precharge_time_stamp[index] = 0;
f_activate_time_stamp[index] = 0;
f_read_time_stamp[index] = 0;
f_write_time_stamp[index] = 0;
for(f_index_1=0; f_index_1 < (1<<BA_BITS); f_index_1=f_index_1+1) begin
f_precharge_time_stamp[f_index_1] = 0;
f_activate_time_stamp[f_index_1] = 0;
f_read_time_stamp[f_index_1] = 0;
f_write_time_stamp[f_index_1] = 0;
end
end
(*anyconst*) reg[2:0] bank_const;
@ -3297,11 +3296,11 @@ ALTERNATE_WRITE_READ: if(!o_wb_stall_calib) begin
always @(posedge i_controller_clk) begin
if(sync_rst_controller) begin
for(index=0; index < (1<<BA_BITS); index=index+1) begin
f_precharge_time_stamp[index] <= 0;
f_activate_time_stamp[index] <= 0;
f_read_time_stamp[index] <= 0;
f_write_time_stamp[index] <= 0;
for(f_index_1=0; f_index_1 < (1<<BA_BITS); f_index_1=f_index_1+1) begin
f_precharge_time_stamp[f_index_1] <= 0;
f_activate_time_stamp[f_index_1] <= 0;
f_read_time_stamp[f_index_1] <= 0;
f_write_time_stamp[f_index_1] <= 0;
end
end
else begin
@ -3589,8 +3588,8 @@ ALTERNATE_WRITE_READ: if(!o_wb_stall_calib) begin
end
5: begin
for(index = 0; index < LANES; index = index + 1) begin
assert(o_wb2_data[4*index +: 4] == $past(added_read_pipe[index]));
for(f_index_1 = 0; f_index_1 < LANES; f_index_1 = f_index_1 + 1) begin
assert(o_wb2_data[4*f_index_1 +: 4] == $past(added_read_pipe[f_index_1]));
end
end
@ -3599,8 +3598,8 @@ ALTERNATE_WRITE_READ: if(!o_wb_stall_calib) begin
end
7: begin
for(index = 0; 8*index < 32 && index < LANES; index = index + 1) begin
assert(o_wb2_data[8*index +: 8] == $past(i_phy_iserdes_bitslip_reference[8*index +: 8]));
for(f_index_1 = 0; 8*f_index_1 < 32 && f_index_1 < LANES; f_index_1 = f_index_1 + 1) begin
assert(o_wb2_data[8*f_index_1 +: 8] == $past(i_phy_iserdes_bitslip_reference[8*f_index_1 +: 8]));
end
end
8: begin
@ -3619,12 +3618,12 @@ ALTERNATE_WRITE_READ: if(!o_wb_stall_calib) begin
assign f_read_data_2_lane = f_read_data_2[5 +: lanes_clog2];
always @(posedge i_controller_clk) begin
if(f_past_valid) begin
for(index = 0; index < LANES; index = index + 1) begin
if(o_phy_bitslip[index]) begin
for(f_index_1 = 0; f_index_1 < LANES; f_index_1 = f_index_1 + 1) begin
if(o_phy_bitslip[f_index_1]) begin
//Bitslip cannot be asserted for two consecutive CLKDIV cycles; Bitslip must be
//deasserted for at least one CLKDIV cycle between two Bitslip assertions.
assert(!$past(o_phy_bitslip[index]));
assert(!$past(o_phy_bitslip[f_index_1]));
end
end
end