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Diffstat (limited to 'rtl/dev/temp.txt')
| -rw-r--r-- | rtl/dev/temp.txt | 384 |
1 files changed, 0 insertions, 384 deletions
diff --git a/rtl/dev/temp.txt b/rtl/dev/temp.txt deleted file mode 100644 index 987bd86..0000000 --- a/rtl/dev/temp.txt +++ /dev/null @@ -1,384 +0,0 @@ - // - // Helper Functions - // - /* - function [INDEX_WIDTH-1:0] calc_preset_a_index; - input [INDEX_WIDTH-4:0] col_in; - input integer x_in; - integer index_out; - begin - index_out = col_in * NUM_MULTS + x_in; - calc_preset_a_index = index_out[INDEX_WIDTH-1:0]; - end - endfunction - - function [INDEX_WIDTH-1:0] calc_rotate_a_index; - input [INDEX_WIDTH-1:0] current_index_in; - input [INDEX_WIDTH-1:0] last_index_in; - begin - if (current_index_in > {INDEX_WIDTH{1'b0}}) - calc_rotate_a_index = current_index_in - 1'b1; - else - calc_rotate_a_index = last_index_in; - end - endfunction - */ - - /* - // - // Narrow Counters - // - reg [INDEX_WIDTH-1:0] din_addr_narrow_reg; - reg [INDEX_WIDTH-1:0] din_addr_narrow_dly; - localparam [INDEX_WIDTH-1:0] din_addr_narrow_zero = {INDEX_WIDTH{1'b0}}; - wire [INDEX_WIDTH-1:0] din_addr_narrow_next = (din_addr_narrow_reg < index_last) ? - din_addr_narrow_reg + 1'b1 : din_addr_narrow_zero; - wire din_addr_narrow_done = din_addr_narrow_reg == index_last; - - assign din_addr_narrow = din_addr_narrow_reg; - - always @(posedge clk) - // - din_addr_narrow_dly <= din_addr_narrow_reg; - - always @(posedge clk) - // - case (fsm_state_next) - FSM_STATE_MULT_SQUARE_COL_0_TRIG: din_addr_narrow_reg <= din_addr_narrow_zero; - FSM_STATE_MULT_SQUARE_COL_0_BUSY: din_addr_narrow_reg <= din_addr_narrow_next; - FSM_STATE_MULT_SQUARE_COL_N_TRIG: din_addr_narrow_reg <= din_addr_narrow_zero; - FSM_STATE_MULT_SQUARE_COL_N_BUSY: din_addr_narrow_reg <= din_addr_narrow_next; - endcase - - - // - // Helper Functions - // - function [NUM_MULTS-1:0] calc_mac_clear_bitmask; - input [2:0] t; - begin - case (t) - 3'd0: calc_mac_clear_bitmask = 8'b00000001; - 3'd1: calc_mac_clear_bitmask = 8'b00000010; - 3'd2: calc_mac_clear_bitmask = 8'b00000100; - 3'd3: calc_mac_clear_bitmask = 8'b00001000; - 3'd4: calc_mac_clear_bitmask = 8'b00010000; - 3'd5: calc_mac_clear_bitmask = 8'b00100000; - 3'd6: calc_mac_clear_bitmask = 8'b01000000; - 3'd7: calc_mac_clear_bitmask = 8'b10000000; - endcase - end - endfunction - - function [NUM_MULTS:0] calc_mac_clear_square; - input [INDEX_WIDTH-4:0] current_col_index; - input [INDEX_WIDTH-1:0] b_addr_prev; - begin - if (b_addr_prev[INDEX_WIDTH-1:3] == current_col_index) - calc_mac_clear_square = {1'b0, calc_mac_clear_bitmask(b_addr_prev[2:0])}; - else - calc_mac_clear_square = {1'b0, {NUM_MULTS{1'b0}}}; - end - endfunction - - - // - // Wide Counters - // - reg [INDEX_WIDTH-1:0] din_addr_wide_reg[0:NUM_MULTS-1]; - - integer xi; - always @(posedge clk) - // - for (xi=0; xi<NUM_MULTS; xi=xi+1) - // - case (fsm_state_next) - // - FSM_STATE_MULT_SQUARE_COL_0_TRIG: din_addr_wide_reg[xi] <= calc_preset_a_index(0, xi); - FSM_STATE_MULT_SQUARE_COL_N_TRIG: din_addr_wide_reg[xi] <= calc_preset_a_index(col_index + 1'b1, xi); - // - FSM_STATE_MULT_SQUARE_COL_0_BUSY, - FSM_STATE_MULT_SQUARE_COL_N_BUSY: din_addr_wide_reg[xi] <= calc_rotate_a_index(din_addr_wide_reg[xi], index_last); - // - endcase - - - // - // Enables - // - reg din_ena_narrow_reg = 1'b0; - reg [NUM_MULTS-1:0] din_ena_wide_reg = {NUM_MULTS{1'b0}}; - - assign din_ena_narrow = din_ena_narrow_reg; - assign din_ena_wide = din_ena_wide_reg; - - always @(posedge clk or negedge rst_n) - // - if (rst_n == 1'b0) din_ena_narrow_reg <= 1'b0; - else case (fsm_state_next) - FSM_STATE_MULT_SQUARE_COL_0_TRIG, - FSM_STATE_MULT_SQUARE_COL_0_BUSY, - FSM_STATE_MULT_SQUARE_COL_N_TRIG, - FSM_STATE_MULT_SQUARE_COL_N_BUSY: din_ena_narrow_reg <= 1'b1; - default: din_ena_narrow_reg <= 1'b0; - endcase - - always @(posedge clk or negedge rst_n) - // - if (rst_n == 1'b0) din_ena_wide_reg <= {NUM_MULTS{1'b0}}; - else case (fsm_state_next) - FSM_STATE_MULT_SQUARE_COL_0_TRIG, - FSM_STATE_MULT_SQUARE_COL_0_BUSY, - FSM_STATE_MULT_SQUARE_COL_N_TRIG, - FSM_STATE_MULT_SQUARE_COL_N_BUSY: din_ena_wide_reg <= {NUM_MULTS{1'b1}}; - default: din_ena_wide_reg <= {NUM_MULTS{1'b0}}; - endcase - - - // - // Modes - // - reg [2-1:0] din_mode_wide_reg; - reg [2-1:0] din_mode_narrow_reg; - reg [2-1:0] dout_mode_wide_reg; - reg [2-1:0] dout_mode_narrow_reg; - - assign din_mode_wide = din_mode_wide_reg; - assign din_mode_narrow = din_mode_narrow_reg; - - always @(posedge clk) - // - case (fsm_state_next) - FSM_STATE_MULT_SQUARE_COL_0_TRIG, - FSM_STATE_MULT_SQUARE_COL_0_BUSY, - FSM_STATE_MULT_SQUARE_COL_N_TRIG, - FSM_STATE_MULT_SQUARE_COL_N_BUSY: din_mode_wide_reg <= MODEXPNG_MODE_A; - default: din_mode_wide_reg <= 2'bXX; - endcase - - always @(posedge clk) - // - case (fsm_state_next) - FSM_STATE_MULT_SQUARE_COL_0_TRIG, - FSM_STATE_MULT_SQUARE_COL_0_BUSY, - FSM_STATE_MULT_SQUARE_COL_N_TRIG, - FSM_STATE_MULT_SQUARE_COL_N_BUSY: din_mode_narrow_reg <= MODEXPNG_MODE_B; - default: din_mode_narrow_reg <= 2'bXX; - endcase - - - // - // MAC Array - // - wire [MODEXPNG_WORD_WIDTH-1:0] mac_din_a[0:NUM_MULTS]; - wire [MODEXPNG_WORD_WIDTH-1:0] mac_din_b; - reg [ NUM_MULTS :0] mac_ce; - reg [ NUM_MULTS :0] mac_clr; - wire [ MODEXPNG_MAC_WIDTH-1:0] mac_p[0:NUM_MULTS]; - reg [ NUM_MULTS :0] mac_rdy_lsb; - reg [ NUM_MULTS :0] mac_rdy_lsb_dly[MODEXPNG_MAC_LATENCY-1:0]; - - //reg [ NUM_MULTS :0] mac_ce_dly[MODEXPNG_MAC_LATENCY-1:0]; - //wire [ NUM_MULTS :0] mac_rdy; - - - - - - assign mac_din_b = din_narrow; - - - genvar x; - generate for (x=0; x<=NUM_MULTS; x=x+1) - begin : gen_macs - // - //assign mac_rdy[x] = mac_ce_dly[MODEXPNG_MAC_LATENCY-1][x]; - // - modexpng_mac mac_inst - ( - .clk (clk), - .ce (mac_ce[x]), - .clr (mac_clr[x]), - .a (mac_din_a[x]), - .b (mac_din_b), - .p (mac_p[x]) - ); - // - end - // - endgenerate - - generate for (x=0; x<NUM_MULTS; x=x+1) - begin : gen_mac_din_a - // - assign mac_din_a[x] = din_wide[x*MODEXPNG_WORD_WIDTH+:MODEXPNG_WORD_WIDTH]; - // - end - endgenerate - - generate for (x=0; x<NUM_MULTS; x=x+1) - begin : gen_din_addr_wide - // - assign din_addr_wide[x*INDEX_WIDTH+:INDEX_WIDTH] = din_addr_wide_reg[x]; - // - end - endgenerate - - - // - // MAC Clock Enable Logic - // - always @(posedge clk or negedge rst_n) - // - if (rst_n == 1'b0) mac_ce <= {1'b0, {NUM_MULTS{1'b0}}}; - else case (fsm_state) - FSM_STATE_MULT_SQUARE_COL_0_TRIG, - FSM_STATE_MULT_SQUARE_COL_0_BUSY, - FSM_STATE_MULT_SQUARE_COL_N_TRIG, - FSM_STATE_MULT_SQUARE_COL_N_BUSY: mac_ce <= {1'b0, {NUM_MULTS{1'b1}}}; - default: mac_ce <= {1'b0, {NUM_MULTS{1'b0}}}; - endcase - - - // - // MAC Valid Logic - // - integer y; - - always @(posedge clk) - // - for (xi=0; xi<=NUM_MULTS; xi=xi+1) begin - mac_rdy_lsb_dly[0][xi] <= mac_rdy_lsb[xi]; - for (y=1; y<MODEXPNG_MAC_LATENCY; y=y+1) - mac_rdy_lsb_dly[y][xi] <= mac_rdy_lsb_dly[y-1][xi]; - end - - always @(posedge clk) begin - // - fsm_state_dly[0] <= fsm_state; - for (y=1; y<=MODEXPNG_MAC_LATENCY; y=y+1) - fsm_state_dly[y] <= fsm_state_dly[y-1]; - end - - */ - - /* - always @(posedge clk) - // - for (xi=0; xi<=NUM_MULTS; xi=xi+1) begin - mac_ce_dly[0][xi] <= mac_ce[xi]; - for (y=1; y<MODEXPNG_MAC_LATENCY; y=y+1) - mac_ce_dly[y][xi] <= mac_ce_dly[y-1][xi]; - end - */ - /* - always @(posedge clk) - // - for (xi=0; xi<=NUM_MULTS; xi=xi+1) begin - mac_clr_dly[0][xi] <= mac_clr[xi]; - for (y=1; y<MODEXPNG_MAC_LATENCY; y=y+1) - mac_clr_dly[y][xi] <= mac_clr_dly[y-1][xi]; - end - */ - - /* - // - // MAC Clear Logic - // - always @(posedge clk) - // - case (fsm_state) - FSM_STATE_MULT_SQUARE_COL_0_TRIG, - FSM_STATE_MULT_SQUARE_COL_N_TRIG: mac_clr <= {1'b0, {NUM_MULTS{1'b1}}}; - FSM_STATE_MULT_SQUARE_COL_0_BUSY, - FSM_STATE_MULT_SQUARE_COL_N_BUSY: mac_clr <= calc_mac_clear_square(col_index, din_addr_narrow_dly); - default: mac_clr <= {1'bX, {NUM_MULTS{1'bX}}}; - endcase - - - // - // MAC Ready Logic - // - always @(posedge clk) - // - case (fsm_state) - FSM_STATE_MULT_SQUARE_COL_0_TRIG, - FSM_STATE_MULT_SQUARE_COL_N_TRIG, - FSM_STATE_MULT_SQUARE_COL_0_BUSY, - FSM_STATE_MULT_SQUARE_COL_N_BUSY: mac_rdy_lsb <= calc_mac_clear_square(col_index, din_addr_narrow); - default: mac_rdy_lsb <= {1'bX, {NUM_MULTS{1'bX}}}; - endcase - - - - // - // Recombinators - // - reg rcmb_lsb_ce; - reg rcmb_lsb_clr; - reg [MODEXPNG_MAC_WIDTH-1: 0] rcmb_lsb_din; - wire [15: 0] rcmb_lsb_dout; - - modexpng_part_recombinator recomb_lsb - ( - .clk (clk), - .ce (rcmb_lsb_ce), - .clr (rcmb_lsb_clr), - .din (rcmb_lsb_din), - .dout (rcmb_lsb_dout) - ); - - - reg calc_rcmb_lsb_ce; - always @* - // - calc_rcmb_lsb_ce = | mac_rdy_lsb_dly[MODEXPNG_MAC_LATENCY-1][NUM_MULTS-1:0]; - - reg [MODEXPNG_MAC_WIDTH-1:0] calc_rcmb_lsb_din; - - always @* - // - casez (mac_rdy_lsb_dly[MODEXPNG_MAC_LATENCY-1][NUM_MULTS-1:0]) - 8'b00000001: calc_rcmb_lsb_din = mac_p[0]; - 8'b00000010: calc_rcmb_lsb_din = mac_p[1]; - 8'b00000100: calc_rcmb_lsb_din = mac_p[2]; - 8'b00001000: calc_rcmb_lsb_din = mac_p[3]; - 8'b00010000: calc_rcmb_lsb_din = mac_p[4]; - 8'b00100000: calc_rcmb_lsb_din = mac_p[5]; - 8'b01000000: calc_rcmb_lsb_din = mac_p[6]; - 8'b10000000: calc_rcmb_lsb_din = mac_p[7]; - default: calc_rcmb_lsb_din = {MODEXPNG_MAC_WIDTH{1'bX}}; - endcase - - always @(posedge clk or negedge rst_n) - // - if (rst_n == 1'b0) - rcmb_lsb_ce <= 1'b0; - else case (fsm_state_dly[MODEXPNG_MAC_LATENCY]) - FSM_STATE_MULT_SQUARE_COL_0_TRIG, - FSM_STATE_MULT_SQUARE_COL_N_TRIG, - FSM_STATE_MULT_SQUARE_COL_0_BUSY, - FSM_STATE_MULT_SQUARE_COL_N_BUSY: rcmb_lsb_ce <= calc_rcmb_lsb_ce; - default: rcmb_lsb_ce <= 1'b0; - endcase - - always @(posedge clk) - // - case (fsm_state_dly[MODEXPNG_MAC_LATENCY]) - FSM_STATE_MULT_SQUARE_COL_0_TRIG: rcmb_lsb_clr <= 1'b1; - default: rcmb_lsb_clr <= 1'b0; - endcase - - always @(posedge clk) - // - case (fsm_state_dly[MODEXPNG_MAC_LATENCY]) - FSM_STATE_MULT_SQUARE_COL_0_TRIG, - FSM_STATE_MULT_SQUARE_COL_N_TRIG, - FSM_STATE_MULT_SQUARE_COL_0_BUSY, - FSM_STATE_MULT_SQUARE_COL_N_BUSY: rcmb_lsb_din <= calc_rcmb_lsb_din; - default: rcmb_lsb_din <= {MODEXPNG_MAC_WIDTH{1'bX}}; - endcase - - - -*/ |