diff options
Diffstat (limited to 'rtl/_modexpng_recombinator_block.v')
| -rw-r--r-- | rtl/_modexpng_recombinator_block.v | 1225 |
1 files changed, 0 insertions, 1225 deletions
diff --git a/rtl/_modexpng_recombinator_block.v b/rtl/_modexpng_recombinator_block.v deleted file mode 100644 index 61bf734..0000000 --- a/rtl/_modexpng_recombinator_block.v +++ /dev/null @@ -1,1225 +0,0 @@ -module modexpng_recombinator_block -( - clk, rst, - ena, rdy, - mmm_fsm_state_next, - word_index_last, - dsp_xy_ce_p, - dsp_x_p, dsp_y_p, - col_index, col_index_last, - rd_narrow_xy_addr, rd_narrow_xy_bank, - rcmb_wide_xy_bank, rcmb_wide_xy_addr, rcmb_wide_x_dout, rcmb_wide_y_dout, rcmb_wide_xy_valid, - rcmb_narrow_xy_bank, rcmb_narrow_xy_addr, rcmb_narrow_x_dout, rcmb_narrow_y_dout, rcmb_narrow_xy_valid, - rdct_narrow_xy_bank, rdct_narrow_xy_addr, rdct_narrow_x_dout, rdct_narrow_y_dout, rdct_narrow_xy_valid -); - - - // - // Headers - // - `include "../rtl/modexpng_parameters.vh" - `include "../rtl/modexpng_mmm_fsm.vh" - - - input clk; - input rst; - input ena; - output rdy; - input [ MMM_FSM_STATE_W -1:0] mmm_fsm_state_next; - input [ OP_ADDR_W -1:0] word_index_last; - input dsp_xy_ce_p; - input [(NUM_MULTS+1) * MAC_W -1:0] dsp_x_p; - input [(NUM_MULTS+1) * MAC_W -1:0] dsp_y_p; - input [ COL_INDEX_W -1:0] col_index; - input [ COL_INDEX_W -1:0] col_index_last; - - input [ BANK_ADDR_W -1:0] rd_narrow_xy_bank; - input [ OP_ADDR_W -1:0] rd_narrow_xy_addr; - - output [ BANK_ADDR_W -1:0] rcmb_wide_xy_bank; - output [ OP_ADDR_W -1:0] rcmb_wide_xy_addr; - output [ WORD_EXT_W -1:0] rcmb_wide_x_dout; - output [ WORD_EXT_W -1:0] rcmb_wide_y_dout; - output rcmb_wide_xy_valid; - - output [ BANK_ADDR_W -1:0] rcmb_narrow_xy_bank; - output [ OP_ADDR_W -1:0] rcmb_narrow_xy_addr; - output [ WORD_EXT_W -1:0] rcmb_narrow_x_dout; - output [ WORD_EXT_W -1:0] rcmb_narrow_y_dout; - output rcmb_narrow_xy_valid; - - output [ BANK_ADDR_W -1:0] rdct_narrow_xy_bank; - output [ OP_ADDR_W -1:0] rdct_narrow_xy_addr; - output [ WORD_EXT_W -1:0] rdct_narrow_x_dout; - output [ WORD_EXT_W -1:0] rdct_narrow_y_dout; - output rdct_narrow_xy_valid; - - - // - // Latches - // - reg [MAC_W-1:0] dsp_x_p_latch[0:NUM_MULTS]; - reg [MAC_W-1:0] dsp_y_p_latch[0:NUM_MULTS]; - - - // - // Mapping - // - wire [MAC_W-1:0] dsp_x_p_split[0:NUM_MULTS]; - wire [MAC_W-1:0] dsp_y_p_split[0:NUM_MULTS]; - - genvar z; - generate for (z=0; z<NUM_MULTS_AUX; z=z+1) - begin : gen_dsp_xy_p_split - assign dsp_x_p_split[z] = dsp_x_p[z*MAC_W +: MAC_W]; - assign dsp_y_p_split[z] = dsp_y_p[z*MAC_W +: MAC_W]; - end - endgenerate - - - // - // Delays - // - reg dsp_xy_ce_p_dly1 = 1'b0; - - always @(posedge clk) - // - if (rst) dsp_xy_ce_p_dly1 <= 1'b0; - else dsp_xy_ce_p_dly1 <= dsp_xy_ce_p; - - - // - // Registers - // - - // valid - reg xy_valid_lsb = 1'b0; - reg xy_aux_lsb = 1'b0; - reg xy_valid_msb = 1'b0; - - // bitmap - reg [NUM_MULTS-1:0] xy_bitmap_lsb = {NUM_MULTS{1'b0}}; - reg [NUM_MULTS-1:0] xy_bitmap_msb = {NUM_MULTS{1'b0}}; - - // index - reg [2:0] xy_index_lsb = 3'dX; - - // purge - reg xy_purge_lsb = 1'b0; - reg xy_purge_msb = 1'b0; - - // valid - latch - reg xy_valid_latch_lsb = 1'b0; - - // aux - latch - reg xy_aux_latch_lsb = 1'b0; - - // bitmap - latch - reg [NUM_MULTS-1:0] xy_bitmap_latch_lsb = MULT_BITMAP_ZEROES; - reg [NUM_MULTS-1:0] xy_bitmap_latch_msb = MULT_BITMAP_ZEROES; - - // index - latch - reg [MAC_INDEX_W-1:0] xy_index_latch_lsb = MAC_INDEX_DONT_CARE; - - // purge - index - reg xy_purge_latch_lsb = 1'b0; - reg xy_purge_latch_msb = 1'b0; - - // - reg xy_valid_lsb_adv[1:6]; - reg xy_valid_msb_adv[1:6]; - reg xy_aux_lsb_adv[1:6]; - reg [NUM_MULTS-1:0] xy_bitmap_lsb_adv[1:6]; - reg [NUM_MULTS-1:0] xy_bitmap_msb_adv[1:6]; - reg [MAC_INDEX_W-1:0] xy_index_lsb_adv[1:6]; - reg [MAC_INDEX_W-1:0] xy_index_msb_adv[1:6]; - reg xy_purge_lsb_adv[1:6]; - reg xy_purge_msb_adv[1:6]; - - reg [1:0] rcmb_mode; - - always @(posedge clk) - // - if (ena) - // - case (mmm_fsm_state_next) - MMM_FSM_STATE_MULT_SQUARE_COL_0_BUSY: rcmb_mode <= 2'd1; - MMM_FSM_STATE_MULT_TRIANGLE_COL_0_BUSY: rcmb_mode <= 2'd2; - MMM_FSM_STATE_MULT_RECTANGLE_COL_0_BUSY: rcmb_mode <= 2'd3; - default: rcmb_mode <= 2'd0; - endcase - - - integer i; - initial for (i=1; i<6; i=i+1) begin - xy_valid_lsb_adv[i] = 1'b0; - xy_valid_msb_adv[i] = 1'b0; - xy_aux_lsb_adv[i] = 1'b0; - xy_bitmap_lsb_adv[i] = {8{1'b0}}; - xy_bitmap_msb_adv[i] = {8{1'b0}}; - xy_index_lsb_adv[i] = 3'dX; - xy_index_msb_adv[i] = 3'dX; - xy_purge_lsb_adv[i] = 1'b0; - xy_purge_msb_adv[i] = 1'b0; - end - - function calc_square_triangle_valid_lsb; - // - input [COL_INDEX_W-1:0] col_index_value; - input [COL_INDEX_W-1:0] col_index_last_value; - input [BANK_ADDR_W-1:0] narrow_xy_bank_value; - input [ OP_ADDR_W-1:0] narrow_xy_addr_value; - begin - // - if (narrow_xy_addr_value[7:3] == col_index_value) - calc_square_triangle_valid_lsb = 1'b1; - else - calc_square_triangle_valid_lsb = 1'b0; - // - end - endfunction - - function calc_square_valid_lsb; - input [COL_INDEX_W-1:0] col_index_value; - input [COL_INDEX_W-1:0] col_index_last_value; - input [BANK_ADDR_W-1:0] narrow_xy_bank_value; - input [ OP_ADDR_W-1:0] narrow_xy_addr_value; - begin - calc_square_valid_lsb = calc_square_triangle_valid_lsb(col_index_value, col_index_last_value, narrow_xy_bank_value, narrow_xy_addr_value); - end - endfunction - - function calc_triangle_valid_lsb; - input [COL_INDEX_W-1:0] col_index_value; - input [COL_INDEX_W-1:0] col_index_last_value; - input [BANK_ADDR_W-1:0] narrow_xy_bank_value; - input [7:0] narrow_xy_addr_value; - begin - calc_triangle_valid_lsb = calc_square_triangle_valid_lsb(col_index_value, col_index_last_value, narrow_xy_bank_value, narrow_xy_addr_value); - end - endfunction - - function calc_rectangle_valid_lsb; - input [COL_INDEX_W-1:0] col_index_value; - input [COL_INDEX_W-1:0] col_index_last_value; - input [BANK_ADDR_W-1:0] narrow_xy_bank_value; - input [7:0] narrow_xy_addr_value; - begin - // - if (narrow_xy_addr_value[7:3] == col_index_value) - calc_rectangle_valid_lsb = narrow_xy_bank_value != BANK_NARROW_EXT; - else - calc_rectangle_valid_lsb = 1'b0; - // - end - endfunction - - function calc_triangle_aux_lsb; - input [COL_INDEX_W-1:0] col_index_value; - input [COL_INDEX_W-1:0] col_index_last_value; - input [BANK_ADDR_W-1:0] narrow_xy_bank_value; - input [7:0] narrow_xy_addr_value; - begin - // - if (narrow_xy_bank_value == BANK_NARROW_EXT) - calc_triangle_aux_lsb = 1'b1; - else - calc_triangle_aux_lsb = 1'b0; - // - end - endfunction - - function [7:0] calc_square_triangle_bitmap_lsb; - input [COL_INDEX_W-1:0] col_index_value; - input [COL_INDEX_W-1:0] col_index_last_value; - input [BANK_ADDR_W-1:0] narrow_xy_bank_value; - input [7:0] narrow_xy_addr_value; - begin - // - if (narrow_xy_addr_value[7:3] == col_index_value) - // - case (narrow_xy_addr_value[2:0]) - 3'b000: calc_square_triangle_bitmap_lsb = 8'b00000001; - 3'b001: calc_square_triangle_bitmap_lsb = 8'b00000010; - 3'b010: calc_square_triangle_bitmap_lsb = 8'b00000100; - 3'b011: calc_square_triangle_bitmap_lsb = 8'b00001000; - 3'b100: calc_square_triangle_bitmap_lsb = 8'b00010000; - 3'b101: calc_square_triangle_bitmap_lsb = 8'b00100000; - 3'b110: calc_square_triangle_bitmap_lsb = 8'b01000000; - 3'b111: calc_square_triangle_bitmap_lsb = 8'b10000000; - endcase - // - else - calc_square_triangle_bitmap_lsb = {8{1'b0}}; - // - end - endfunction - - function [7:0] calc_square_bitmap_lsb; - input [COL_INDEX_W-1:0] col_index_value; - input [COL_INDEX_W-1:0] col_index_last_value; - input [BANK_ADDR_W-1:0] narrow_xy_bank_value; - input [7:0] narrow_xy_addr_value; - begin - calc_square_bitmap_lsb = calc_square_triangle_bitmap_lsb(col_index_value, col_index_last_value, narrow_xy_bank_value, narrow_xy_addr_value); - end - endfunction - - function [7:0] calc_triangle_bitmap_lsb; - input [COL_INDEX_W-1:0] col_index_value; - input [COL_INDEX_W-1:0] col_index_last_value; - input [BANK_ADDR_W-1:0] narrow_xy_bank_value; - input [7:0] narrow_xy_addr_value; - begin - calc_triangle_bitmap_lsb = calc_square_triangle_bitmap_lsb(col_index_value, col_index_last_value, narrow_xy_bank_value, narrow_xy_addr_value); - end - endfunction - - function [7:0] calc_rectangle_bitmap_lsb; - input [COL_INDEX_W-1:0] col_index_value; - input [COL_INDEX_W-1:0] col_index_last_value; - input [BANK_ADDR_W-1:0] narrow_xy_bank_value; - input [7:0] narrow_xy_addr_value; - begin - // - if ((narrow_xy_addr_value[7:3] == col_index_value) && (narrow_xy_bank_value != BANK_NARROW_EXT)) - // - case (narrow_xy_addr_value[2:0]) - 3'b000: calc_rectangle_bitmap_lsb = 8'b00000001; - 3'b001: calc_rectangle_bitmap_lsb = 8'b00000010; - 3'b010: calc_rectangle_bitmap_lsb = 8'b00000100; - 3'b011: calc_rectangle_bitmap_lsb = 8'b00001000; - 3'b100: calc_rectangle_bitmap_lsb = 8'b00010000; - 3'b101: calc_rectangle_bitmap_lsb = 8'b00100000; - 3'b110: calc_rectangle_bitmap_lsb = 8'b01000000; - 3'b111: calc_rectangle_bitmap_lsb = 8'b10000000; - endcase - // - else - calc_rectangle_bitmap_lsb = {8{1'b0}}; - // - end - endfunction - - /* - * These can be simplified (the difference between square/triangle and - * rectangle is that the bank is checked or not). A universal function would - * accept a parameter that tells it whether it should check the bank or not. - * Let's do it later, too early to optimize now, it seems. - * - * - */ - - function [2:0] calc_square_triangle_index_lsb; - input [COL_INDEX_W-1:0] col_index_value; - input [COL_INDEX_W-1:0] col_index_last_value; - input [BANK_ADDR_W-1:0] narrow_xy_bank_value; - input [7:0] narrow_xy_addr_value; - begin - // - if (narrow_xy_addr_value[7:3] == col_index_value) - // - case (narrow_xy_addr_value[2:0]) - 3'b000: calc_square_triangle_index_lsb = 3'd0; - 3'b001: calc_square_triangle_index_lsb = 3'd1; - 3'b010: calc_square_triangle_index_lsb = 3'd2; - 3'b011: calc_square_triangle_index_lsb = 3'd3; - 3'b100: calc_square_triangle_index_lsb = 3'd4; - 3'b101: calc_square_triangle_index_lsb = 3'd5; - 3'b110: calc_square_triangle_index_lsb = 3'd6; - 3'b111: calc_square_triangle_index_lsb = 3'd7; - endcase - // - else - calc_square_triangle_index_lsb = 3'dX; - // - end - endfunction - - function [2:0] calc_square_index_lsb; - input [COL_INDEX_W-1:0] col_index_value; - input [COL_INDEX_W-1:0] col_index_last_value; - input [BANK_ADDR_W-1:0] narrow_xy_bank_value; - input [7:0] narrow_xy_addr_value; - begin - calc_square_index_lsb = calc_square_triangle_index_lsb(col_index_value, col_index_last_value, narrow_xy_bank_value, narrow_xy_addr_value); - end - endfunction - - function [2:0] calc_triangle_index_lsb; - input [COL_INDEX_W-1:0] col_index_value; - input [COL_INDEX_W-1:0] col_index_last_value; - input [BANK_ADDR_W-1:0] narrow_xy_bank_value; - input [7:0] narrow_xy_addr_value; - begin - calc_triangle_index_lsb = calc_square_triangle_index_lsb(col_index_value, col_index_last_value, narrow_xy_bank_value, narrow_xy_addr_value); - end - endfunction - - function [2:0] calc_rectangle_index_lsb; - input [COL_INDEX_W-1:0] col_index_value; - input [COL_INDEX_W-1:0] col_index_last_value; - input [BANK_ADDR_W-1:0] slim_bram_xy_bank_value; - input [7:0] slim_bram_xy_addr_value; - begin - // - if ((slim_bram_xy_addr_value[7:3] == col_index_value) && (slim_bram_xy_bank_value != BANK_NARROW_EXT)) - // - case (slim_bram_xy_addr_value[2:0]) - 3'b000: calc_rectangle_index_lsb = 3'd0; - 3'b001: calc_rectangle_index_lsb = 3'd1; - 3'b010: calc_rectangle_index_lsb = 3'd2; - 3'b011: calc_rectangle_index_lsb = 3'd3; - 3'b100: calc_rectangle_index_lsb = 3'd4; - 3'b101: calc_rectangle_index_lsb = 3'd5; - 3'b110: calc_rectangle_index_lsb = 3'd6; - 3'b111: calc_rectangle_index_lsb = 3'd7; - endcase - // - else - calc_rectangle_index_lsb = 3'dX; - // - end - endfunction - - function calc_square_rectangle_purge_lsb; - input [COL_INDEX_W-1:0] col_index_value; - input [COL_INDEX_W-1:0] col_index_last_value; - input [BANK_ADDR_W-1:0] narrow_xy_bank_value; - input [7:0] narrow_xy_addr_value; - begin - // - if (narrow_xy_addr_value[7:3] == col_index_value) - calc_square_rectangle_purge_lsb = narrow_xy_addr_value[7:3] == col_index_last_value; - else - calc_square_rectangle_purge_lsb = 1'b0; - // - end - endfunction - - function calc_square_purge_lsb; - input [COL_INDEX_W-1:0] col_index_value; - input [COL_INDEX_W-1:0] col_index_last_value; - input [BANK_ADDR_W-1:0] narrow_xy_bank_value; - input [7:0] narrow_xy_addr_value; - begin - calc_square_purge_lsb = calc_square_rectangle_purge_lsb(col_index_value, col_index_last_value, narrow_xy_bank_value, narrow_xy_addr_value); - end - endfunction - - function calc_rectangle_purge_lsb; - input [COL_INDEX_W-1:0] col_index_value; - input [COL_INDEX_W-1:0] col_index_last_value; - input [BANK_ADDR_W-1:0] narrow_xy_bank_value; - input [7:0] narrow_xy_addr_value; - begin - calc_rectangle_purge_lsb = calc_square_rectangle_purge_lsb(col_index_value, col_index_last_value, narrow_xy_bank_value, narrow_xy_addr_value); - end - endfunction - - function calc_square_valid_msb; - input [COL_INDEX_W-1:0] col_index_value; - input [COL_INDEX_W-1:0] col_index_last_value; - input [BANK_ADDR_W-1:0] narrow_xy_bank_value; - input [7:0] narrow_xy_addr_value; - input [7:0] index_last_value; - begin - // - if (narrow_xy_addr_value == index_last_value) - calc_square_valid_msb = 1'b1; - else - calc_square_valid_msb = 1'b0; - // - end - endfunction - - function calc_rectangle_valid_msb; - input [COL_INDEX_W-1:0] col_index_value; - input [COL_INDEX_W-1:0] col_index_last_value; - input [BANK_ADDR_W-1:0] narrow_xy_bank_value; - input [7:0] narrow_xy_addr_value; - input [7:0] index_last_value; - begin - // - if ((narrow_xy_addr_value == 8'd1) && (narrow_xy_bank_value == BANK_NARROW_EXT)) - calc_rectangle_valid_msb = 1'b1; - else - calc_rectangle_valid_msb = 1'b0; - // - end - endfunction - - function [7:0] calc_square_bitmap_msb; - input [COL_INDEX_W-1:0] col_index_value; - input [COL_INDEX_W-1:0] col_index_last_value; - input [BANK_ADDR_W-1:0] narrow_xy_bank_value; - input [7:0] narrow_xy_addr_value; - input [7:0] index_last_value; - begin - // - if (narrow_xy_addr_value == index_last_value) begin - calc_square_bitmap_msb[7] = col_index_value != col_index_last_value; - calc_square_bitmap_msb[6:0] = 7'b1111111; - end else - calc_square_bitmap_msb[7:0] = 8'b00000000; - // - end - endfunction - - function [7:0] calc_rectangle_bitmap_msb; - input [COL_INDEX_W-1:0] col_index_value; - input [COL_INDEX_W-1:0] col_index_last_value; - input [BANK_ADDR_W-1:0] narrow_xy_bank_value; - input [7:0] narrow_xy_addr_value; - input [7:0] index_last_value; - begin - // - if ((narrow_xy_addr_value == 8'd1) && (narrow_xy_bank_value == BANK_NARROW_EXT)) begin - calc_rectangle_bitmap_msb[7:0] = 8'b11111111; - end else - calc_rectangle_bitmap_msb[7:0] = 8'b00000000; - // - end - endfunction - - function calc_square_purge_msb; - input [COL_INDEX_W-1:0] col_index_value; - input [COL_INDEX_W-1:0] col_index_last_value; - input [BANK_ADDR_W-1:0] narrow_xy_bank_value; - input [7:0] narrow_xy_addr_value; - input [7:0] index_last_value; - begin - // - if (narrow_xy_addr_value == index_last_value) - calc_square_purge_msb = col_index_value == col_index_last_value; - else - calc_square_purge_msb = 1'b0; - // - end - endfunction - - function calc_rectangle_purge_msb; - input [COL_INDEX_W-1:0] col_index_value; - input [COL_INDEX_W-1:0] col_index_last_value; - input [BANK_ADDR_W-1:0] narrow_xy_bank_value; - input [7:0] narrow_xy_addr_value; - input [7:0] index_last_value; - begin - // - if ((narrow_xy_addr_value == 8'd1) && (narrow_xy_bank_value == BANK_NARROW_EXT)) - calc_rectangle_purge_msb = col_index_value == col_index_last_value; - else - calc_rectangle_purge_msb = 1'b0; - // - end - endfunction - - - reg rcmb_xy_lsb_ce = 1'b0; - reg rcmb_xy_lsb_ce_aux; - reg [ 2:0] rcmb_xy_lsb_ce_purge = 3'b000; - wire rcmb_xy_lsb_ce_combined = rcmb_xy_lsb_ce | rcmb_xy_lsb_ce_aux | rcmb_xy_lsb_ce_purge[0]; - reg rcmb_xy_lsb_clr; - - reg [46:0] rcmb_x_lsb_din; - reg [46:0] rcmb_y_lsb_din; - wire [15:0] rcmb_x_lsb_dout; - wire [15:0] rcmb_y_lsb_dout; - - reg rcmb_xy_msb_ce = 1'b0; - reg [ 1:0] rcmb_xy_msb_ce_purge = 2'b00; - wire rcmb_xy_msb_ce_combined = rcmb_xy_msb_ce | rcmb_xy_msb_ce_purge[0]; - reg rcmb_xy_msb_clr; - - reg [46:0] rcmb_x_msb_din; - reg [46:0] rcmb_y_msb_din; - wire [15:0] rcmb_x_msb_dout; - wire [15:0] rcmb_y_msb_dout; - - modexpng_recombinator_cell recomb_x_lsb - ( - .clk (clk), - .ce (rcmb_xy_lsb_ce_combined), - .clr (rcmb_xy_lsb_clr), - .din (rcmb_x_lsb_din), - .dout (rcmb_x_lsb_dout) - ); - modexpng_recombinator_cell recomb_y_lsb - ( - .clk (clk), - .ce (rcmb_xy_lsb_ce_combined), - .clr (rcmb_xy_lsb_clr), - .din (rcmb_y_lsb_din), - .dout (rcmb_y_lsb_dout) - ); - - modexpng_recombinator_cell recomb_x_msb - ( - .clk (clk), - .ce (rcmb_xy_msb_ce_combined), - .clr (rcmb_xy_msb_clr), - .din (rcmb_x_msb_din), - .dout (rcmb_x_msb_dout) - ); - - modexpng_recombinator_cell recomb_y_msb - ( - .clk (clk), - .ce (rcmb_xy_msb_ce_combined), - .clr (rcmb_xy_msb_clr), - .din (rcmb_y_msb_din), - .dout (rcmb_y_msb_dout) - ); - - always @(posedge clk) begin - // - rcmb_xy_lsb_ce <= xy_valid_latch_lsb; - rcmb_xy_lsb_ce_aux <= xy_aux_latch_lsb; - rcmb_xy_msb_ce <= xy_bitmap_latch_msb[0]; - // - if (xy_purge_latch_lsb) - rcmb_xy_lsb_ce_purge <= 3'b111; - else - rcmb_xy_lsb_ce_purge <= {1'b0, rcmb_xy_lsb_ce_purge[2:1]}; - // - if (xy_purge_latch_msb && xy_bitmap_latch_msb[0] && !xy_bitmap_latch_msb[1]) - rcmb_xy_msb_ce_purge = 2'b11; - else - rcmb_xy_msb_ce_purge <= {1'b0, rcmb_xy_msb_ce_purge[1]}; - // - end - - - always @(posedge clk) - // - if (ena) begin - rcmb_xy_lsb_clr <= 1'b1; - rcmb_xy_msb_clr <= 1'b1; - end else begin - if (rcmb_xy_lsb_ce) rcmb_xy_lsb_clr <= 1'b0; - if (rcmb_xy_msb_ce) rcmb_xy_msb_clr <= 1'b0; - end - - always @(posedge clk) - // - if (xy_valid_latch_lsb) begin - rcmb_x_lsb_din <= dsp_x_p_latch[xy_index_latch_lsb]; - rcmb_y_lsb_din <= dsp_y_p_latch[xy_index_latch_lsb]; - end else if (xy_aux_latch_lsb) begin - rcmb_x_lsb_din <= dsp_x_p_latch[8]; - rcmb_y_lsb_din <= dsp_y_p_latch[8]; - end else begin - rcmb_x_lsb_din <= {47{1'b0}}; - rcmb_y_lsb_din <= {47{1'b0}}; - end - - always @(posedge clk) - // - if (xy_bitmap_latch_msb[0]) begin - rcmb_x_msb_din <= dsp_x_p_latch[0]; - rcmb_y_msb_din <= dsp_y_p_latch[0]; - end else begin - rcmb_x_msb_din <= {47{1'b0}}; - rcmb_y_msb_din <= {47{1'b0}}; - end - - - always @(posedge clk) - // - case (mmm_fsm_state_next) - // - MMM_FSM_STATE_MULT_SQUARE_COL_0_TRIG, - MMM_FSM_STATE_MULT_SQUARE_COL_N_TRIG, - MMM_FSM_STATE_MULT_SQUARE_COL_0_BUSY, - MMM_FSM_STATE_MULT_SQUARE_COL_N_BUSY: begin - // - xy_valid_lsb_adv [6] <= calc_square_valid_lsb (col_index, col_index_last, rd_narrow_xy_bank, rd_narrow_xy_addr); - xy_aux_lsb_adv [6] <= 1'b0; - xy_bitmap_lsb_adv[6] <= calc_square_bitmap_lsb(col_index, col_index_last, rd_narrow_xy_bank, rd_narrow_xy_addr); - xy_index_lsb_adv [6] <= calc_square_index_lsb (col_index, col_index_last, rd_narrow_xy_bank, rd_narrow_xy_addr); - xy_purge_lsb_adv [6] <= calc_square_purge_lsb (col_index, col_index_last, rd_narrow_xy_bank, rd_narrow_xy_addr); - // - xy_valid_msb_adv [6] <= calc_square_valid_msb (col_index, col_index_last, rd_narrow_xy_bank, rd_narrow_xy_addr, word_index_last); - xy_bitmap_msb_adv[6] <= calc_square_bitmap_msb(col_index, col_index_last, rd_narrow_xy_bank, rd_narrow_xy_addr, word_index_last); - xy_purge_msb_adv [6] <= calc_square_purge_msb (col_index, col_index_last, rd_narrow_xy_bank, rd_narrow_xy_addr, word_index_last); - // - end - // - MMM_FSM_STATE_MULT_TRIANGLE_COL_0_TRIG, - MMM_FSM_STATE_MULT_TRIANGLE_COL_N_TRIG, - MMM_FSM_STATE_MULT_TRIANGLE_COL_0_BUSY, - MMM_FSM_STATE_MULT_TRIANGLE_COL_N_BUSY: begin - // - xy_valid_lsb_adv [6] <= calc_triangle_valid_lsb (col_index, col_index_last, rd_narrow_xy_bank, rd_narrow_xy_addr); - xy_aux_lsb_adv [6] <= calc_triangle_aux_lsb (col_index, col_index_last, rd_narrow_xy_bank, rd_narrow_xy_addr); - xy_bitmap_lsb_adv[6] <= calc_triangle_bitmap_lsb(col_index, col_index_last, rd_narrow_xy_bank, rd_narrow_xy_addr); - xy_index_lsb_adv [6] <= calc_triangle_index_lsb (col_index, col_index_last, rd_narrow_xy_bank, rd_narrow_xy_addr); - xy_purge_lsb_adv [6] <= 1'b0; - // - xy_valid_msb_adv [6] <= 1'b0; - xy_bitmap_msb_adv[6] <= {8{1'b0}}; - xy_purge_msb_adv [6] <= 1'b0; - // - end - // - MMM_FSM_STATE_MULT_RECTANGLE_COL_0_TRIG, - MMM_FSM_STATE_MULT_RECTANGLE_COL_N_TRIG, - MMM_FSM_STATE_MULT_RECTANGLE_COL_0_BUSY, - MMM_FSM_STATE_MULT_RECTANGLE_COL_N_BUSY: begin - // - xy_valid_lsb_adv [6] <= calc_rectangle_valid_lsb (col_index, col_index_last, rd_narrow_xy_bank, rd_narrow_xy_addr); - xy_aux_lsb_adv [6] <= 1'b0; - xy_bitmap_lsb_adv[6] <= calc_rectangle_bitmap_lsb(col_index, col_index_last, rd_narrow_xy_bank, rd_narrow_xy_addr); - xy_index_lsb_adv [6] <= calc_rectangle_index_lsb (col_index, col_index_last, rd_narrow_xy_bank, rd_narrow_xy_addr); - xy_purge_lsb_adv [6] <= calc_rectangle_purge_lsb (col_index, col_index_last, rd_narrow_xy_bank, rd_narrow_xy_addr); - // - xy_valid_msb_adv [6] <= calc_rectangle_valid_msb (col_index, col_index_last, rd_narrow_xy_bank, rd_narrow_xy_addr, word_index_last); - xy_bitmap_msb_adv[6] <= calc_rectangle_bitmap_msb(col_index, col_index_last, rd_narrow_xy_bank, rd_narrow_xy_addr, word_index_last); - xy_purge_msb_adv [6] <= calc_rectangle_purge_msb (col_index, col_index_last, rd_narrow_xy_bank, rd_narrow_xy_addr, word_index_last); - // - end - // - default: begin - // - xy_valid_lsb_adv [6] <= 1'b0; - xy_aux_lsb_adv [6] <= 1'b0; - xy_bitmap_lsb_adv[6] <= {8{1'b0}}; - xy_index_lsb_adv [6] <= 3'dX; - xy_purge_lsb_adv [6] <= 1'b0; - // - xy_valid_msb_adv [6] <= 1'b0; - xy_bitmap_msb_adv[6] <= {8{1'b0}}; - xy_purge_msb_adv [6] <= 1'b0; - // - end - // - endcase - - - always @(posedge clk) begin - // - xy_valid_lsb <= xy_valid_lsb_adv [1]; - xy_aux_lsb <= xy_aux_lsb_adv [1]; - xy_bitmap_lsb <= xy_bitmap_lsb_adv[1]; - xy_index_lsb <= xy_index_lsb_adv [1]; - xy_purge_lsb <= xy_purge_lsb_adv [1]; - // - xy_valid_latch_lsb <= xy_valid_lsb; - xy_aux_latch_lsb <= xy_aux_lsb; - xy_bitmap_latch_lsb <= xy_bitmap_lsb; - xy_index_latch_lsb <= xy_index_lsb; - xy_purge_latch_lsb <= xy_purge_lsb; - // - xy_valid_msb <= xy_valid_msb_adv[1]; - xy_bitmap_msb <= xy_bitmap_msb_adv[1]; - xy_purge_msb <= xy_purge_msb_adv[1]; - // - if (xy_valid_msb) begin - xy_bitmap_latch_msb <= xy_bitmap_msb; - xy_purge_latch_msb <= xy_purge_msb; - end else begin - xy_bitmap_latch_msb <= {1'b0, xy_bitmap_latch_msb[7:1]}; - end - // - // - for (i=1; i<6; i=i+1) begin - xy_valid_lsb_adv [i] <= xy_valid_lsb_adv [i+1]; - xy_aux_lsb_adv [i] <= xy_aux_lsb_adv [i+1]; - xy_bitmap_lsb_adv[i] <= xy_bitmap_lsb_adv[i+1]; - xy_index_lsb_adv [i] <= xy_index_lsb_adv [i+1]; - xy_purge_lsb_adv [i] <= xy_purge_lsb_adv [i+1]; - // - xy_valid_msb_adv [i] <= xy_valid_msb_adv [i+1]; - xy_bitmap_msb_adv[i] <= xy_bitmap_msb_adv[i+1]; - xy_purge_msb_adv [i] <= xy_purge_msb_adv [i+1]; - end - // - end - - always @(posedge clk) - // - if (xy_bitmap_latch_msb[1]) // only shift 7 times - // - for (i=0; i<8; i=i+1) - // - if (i < 7) begin - dsp_x_p_latch[i] <= dsp_x_p_latch[i+1]; - dsp_y_p_latch[i] <= dsp_y_p_latch[i+1]; - end else begin - dsp_x_p_latch[i] <= {47{1'bX}}; - dsp_y_p_latch[i] <= {47{1'bX}}; - end - // - else if (dsp_xy_ce_p_dly1) begin - // - for (i=0; i<8; i=i+1) - // - if (xy_bitmap_lsb[i]) begin - dsp_x_p_latch[i] <= dsp_x_p_split[i]; - dsp_y_p_latch[i] <= dsp_y_p_split[i]; - end else if (xy_valid_msb && xy_bitmap_msb[i]) begin - dsp_x_p_latch[i] <= dsp_x_p_split[i]; - dsp_y_p_latch[i] <= dsp_y_p_split[i]; - end - // - if (xy_aux_lsb) begin - dsp_x_p_latch[8] <= dsp_x_p_split[8]; - dsp_y_p_latch[8] <= dsp_y_p_split[8]; - end - // - end - - reg rcmb_xy_lsb_valid = 1'b0; - reg rcmb_xy_msb_valid = 1'b0; - - always @(posedge clk) - // - if (rst) begin - rcmb_xy_lsb_valid <= 1'b0; - rcmb_xy_msb_valid <= 1'b0; - end else begin - rcmb_xy_lsb_valid <= rcmb_xy_lsb_ce_combined; - rcmb_xy_msb_valid <= rcmb_xy_msb_ce_combined; - end - - - reg [BANK_ADDR_W-1:0] wide_xy_bank; - reg [ 7:0] wide_xy_addr; - reg [17:0] wide_x_dout; - reg [17:0] wide_y_dout; - reg wide_xy_valid = 1'b0; - - reg [BANK_ADDR_W-1:0] narrow_xy_bank; - reg [ 7:0] narrow_xy_addr; - reg [17:0] narrow_x_dout; - reg [17:0] narrow_y_dout; - reg narrow_xy_valid = 1'b0; - - reg [BANK_ADDR_W-1:0] rdct_xy_bank; - reg [ 7:0] rdct_xy_addr; - reg [17:0] rdct_x_dout; - reg [17:0] rdct_y_dout; - reg rdct_xy_valid = 1'b0; - - reg [ 7:0] cnt_lsb; - reg [ 7:0] cnt_msb; - - reg cnt_lsb_wrapped; - reg cnt_msb_wrapped; - - reg [31:0] rcmb_xy_msb_carry_0; - reg [31:0] rcmb_xy_msb_carry_1; - - reg [31:0] rcmb_xy_msb_delay_0; - reg [31:0] rcmb_xy_msb_delay_1; - reg [31:0] rcmb_xy_msb_delay_2; - - reg [ 7:0] rcmb_msb_cnt_delay_0 = 8'd0; - reg [ 7:0] rcmb_msb_cnt_delay_1 = 8'd0; - reg [ 7:0] rcmb_msb_cnt_delay_2 = 8'd0; - - reg rcmb_msb_flag_delay_0; - reg rcmb_msb_flag_delay_1; - reg rcmb_msb_flag_delay_2; - - assign rcmb_wide_xy_bank = wide_xy_bank; - assign rcmb_wide_xy_addr = wide_xy_addr; - assign rcmb_wide_x_dout = wide_x_dout; - assign rcmb_wide_y_dout = wide_y_dout; - assign rcmb_wide_xy_valid = wide_xy_valid; - - assign rcmb_narrow_xy_bank = narrow_xy_bank; - assign rcmb_narrow_xy_addr = narrow_xy_addr; - assign rcmb_narrow_x_dout = narrow_x_dout; - assign rcmb_narrow_y_dout = narrow_y_dout; - assign rcmb_narrow_xy_valid = narrow_xy_valid; - - assign rdct_narrow_xy_bank = rdct_xy_bank; - assign rdct_narrow_xy_addr = rdct_xy_addr; - assign rdct_narrow_x_dout = rdct_x_dout; - assign rdct_narrow_y_dout = rdct_y_dout; - assign rdct_narrow_xy_valid = rdct_xy_valid; - - reg rdy_reg = 1'b1; - reg rdy_adv = 1'b1; - - assign rdy = rdy_reg; - - - always @(posedge clk) - // - if (ena) rdy_reg <= 1'b0; - else rdy_reg <= rdy_adv; - - task advance_rcmb_msb_delay; - input [15:0] dout_x; - input [15:0] dout_y; - input [ 7:0] cnt; - input flag; - begin - // - rcmb_xy_msb_delay_0 <= {dout_y, dout_x}; - rcmb_xy_msb_delay_1 <= rcmb_xy_msb_delay_0; - rcmb_xy_msb_delay_2 <= rcmb_xy_msb_delay_1; - // - rcmb_msb_cnt_delay_0 <= cnt; - rcmb_msb_cnt_delay_1 <= rcmb_msb_cnt_delay_0; - rcmb_msb_cnt_delay_2 <= rcmb_msb_cnt_delay_1; - // - rcmb_msb_flag_delay_0 <= flag; - rcmb_msb_flag_delay_1 <= rcmb_msb_flag_delay_0; - rcmb_msb_flag_delay_2 <= rcmb_msb_flag_delay_1; - // - end - endtask - - task shift_rcmb_msb_carry; - input [15:0] dout_x; - input [15:0] dout_y; - begin - rcmb_xy_msb_carry_0 <= {dout_y, dout_x}; - rcmb_xy_msb_carry_1 <= rcmb_xy_msb_carry_0; - end - endtask - - task _update_wide; - input [BANK_ADDR_W-1:0] bank; - input [ 7:0] addr; - input [17:0] dout_x; - input [17:0] dout_y; - input valid; - begin - wide_xy_bank <= bank; - wide_xy_addr <= addr; - wide_x_dout <= dout_x; - wide_y_dout <= dout_y; - wide_xy_valid <= valid; - end - endtask - - task _update_narrow; - input [BANK_ADDR_W-1:0] bank; - input [ 7:0] addr; - input [17:0] dout_x; - input [17:0] dout_y; - input valid; - begin - narrow_xy_bank <= bank; - narrow_xy_addr <= addr; - narrow_x_dout <= dout_x; - narrow_y_dout <= dout_y; - narrow_xy_valid <= valid; - end - endtask - - task _update_rdct; - input [BANK_ADDR_W-1:0] bank; - input [ 7:0] addr; - input [17:0] dout_x; - input [17:0] dout_y; - input valid; - begin - rdct_xy_bank <= bank; - rdct_xy_addr <= addr; - rdct_x_dout <= dout_x; - rdct_y_dout <= dout_y; - rdct_xy_valid <= valid; - end - endtask - - task set_wide; - input [BANK_ADDR_W-1:0] bank; - input [ 7:0] addr; - input [17:0] dout_x; - input [17:0] dout_y; - begin - _update_wide(bank, addr, dout_x, dout_y, 1'b1); - end - endtask - - task set_narrow; - input [BANK_ADDR_W-1:0] bank; - input [ 7:0] addr; - input [17:0] dout_x; - input [17:0] dout_y; - begin - _update_narrow(bank, addr, dout_x, dout_y, 1'b1); - end - endtask - - task set_rdct; - input [BANK_ADDR_W-1:0] bank; - input [ 7:0] addr; - input [17:0] dout_x; - input [17:0] dout_y; - begin - _update_rdct(bank, addr, dout_x, dout_y, 1'b1); - end - endtask - - task clear_wide; - begin - _update_wide(BANK_DONT_CARE, 8'hXX, {18{1'bX}}, {18{1'bX}}, 1'b0); - end - endtask - - task clear_narrow; - begin - _update_narrow(BANK_DONT_CARE, 8'hXX, {18{1'bX}}, {18{1'bX}}, 1'b0); - end - endtask - - task clear_rdct; - begin - _update_rdct(BANK_DONT_CARE, 8'hXX, {18{1'bX}}, {18{1'bX}}, 1'b0); - end - endtask - - task _set_cnt_lsb; - input [7:0] cnt; - input wrapped; - begin - cnt_lsb <= cnt; - cnt_lsb_wrapped <= wrapped; - end - endtask - - task _set_cnt_msb; - input [7:0] cnt; - input wrapped; - begin - cnt_msb <= cnt; - cnt_msb_wrapped <= wrapped; - end - endtask - - task inc_cnt_lsb; - begin - if (cnt_lsb == word_index_last) - _set_cnt_lsb(8'd0, 1'b1); - else - _set_cnt_lsb(cnt_lsb + 1'b1, cnt_lsb_wrapped); - end - endtask - - task inc_cnt_both; - begin - inc_cnt_lsb; - inc_cnt_msb; - end - endtask - - task inc_cnt_msb; - begin - if (cnt_msb == word_index_last) - _set_cnt_msb(8'd0, 1'b1); - else - _set_cnt_msb(cnt_msb + 1'b1, cnt_msb_wrapped); - end - endtask - - task clr_cnt_lsb; - begin - _set_cnt_lsb(8'd0, 1'b0); - end - endtask - - task clr_cnt_msb; - begin - _set_cnt_msb(8'd0, 1'b0); - end - endtask - - - - wire [1:0] rcmb_xy_valid = {rcmb_xy_msb_valid, rcmb_xy_lsb_valid}; - - always @(posedge clk) - // - if (ena) begin - clr_cnt_lsb(); - clr_cnt_msb(); - end else if (!rdy) - // - case (rcmb_mode) - 2'd1: recombine_square(); - 2'd2: recombine_triangle(); - 2'd3: recombine_rectangle(); - endcase - - wire [17:0] rcmb_x_lsb_dout_pad = {2'b00, rcmb_x_lsb_dout}; - wire [17:0] rcmb_y_lsb_dout_pad = {2'b00, rcmb_y_lsb_dout}; - - wire [17:0] rcmb_x_msb_dout_pad = {2'b00, rcmb_x_msb_dout}; - wire [17:0] rcmb_y_msb_dout_pad = {2'b00, rcmb_y_msb_dout}; - - wire [17:0] rcmb_x_msb_delay_2_pad = {2'b00, rcmb_xy_msb_delay_2[15: 0]}; - wire [17:0] rcmb_y_msb_delay_2_pad = {2'b00, rcmb_xy_msb_delay_2[31:16]}; - - wire [17:0] rcmb_x_lsb_msb_carry_1_pad = {1'b0, {1'b0, rcmb_x_lsb_dout} + {1'b0, rcmb_xy_msb_carry_1[15: 0]}}; - wire [17:0] rcmb_y_lsb_msb_carry_1_pad = {1'b0, {1'b0, rcmb_y_lsb_dout} + {1'b0, rcmb_xy_msb_carry_1[31:16]}}; - - - task recombine_square; - // - begin - // - case (rcmb_xy_valid) - // - 2'b01: inc_cnt_lsb; - 2'b10: inc_cnt_msb; - 2'b11: inc_cnt_both; - // - endcase - // - case (rcmb_xy_valid) - // - 2'b00: if (rcmb_msb_flag_delay_2) set_wide(BANK_WIDE_H, rcmb_msb_cnt_delay_2, rcmb_x_msb_delay_2_pad, rcmb_y_msb_delay_2_pad); - else clear_wide; - // - 2'b01: set_wide(BANK_WIDE_L, cnt_lsb, rcmb_x_lsb_dout_pad, rcmb_y_lsb_dout_pad); - // - 2'b10: if (cnt_msb < 8'd2) clear_wide; - else set_wide(BANK_WIDE_H, cnt_msb, rcmb_x_msb_dout_pad, rcmb_y_msb_dout_pad); - // - 2'b11: if (cnt_lsb_wrapped) set_wide(BANK_WIDE_H, cnt_lsb, rcmb_x_lsb_msb_carry_1_pad, rcmb_y_lsb_msb_carry_1_pad); - else set_wide(BANK_WIDE_L, cnt_lsb, rcmb_x_lsb_dout_pad, rcmb_y_lsb_dout_pad); - // - endcase - // - case (rcmb_xy_valid) - // - 2'b00: if (rcmb_msb_flag_delay_2) advance_rcmb_msb_delay(16'hXXXX, 16'hXXXX, 8'd0, 1'b0); - 2'b10: if (cnt_msb < 8'd2) shift_rcmb_msb_carry(rcmb_x_msb_dout, rcmb_y_msb_dout); - // - 2'b11: begin advance_rcmb_msb_delay(rcmb_x_msb_dout, rcmb_y_msb_dout, cnt_msb, 1'b1); - if (cnt_lsb_wrapped) shift_rcmb_msb_carry({16{1'bX}}, {16{1'bX}}); - end - // - endcase - // - end - // - endtask - - - task recombine_triangle; - // - begin - // - case (rcmb_xy_valid) - // - 2'b01: inc_cnt_lsb(); - // - endcase - // - case (rcmb_xy_valid) - // - 2'b00: clear_narrow; - 2'b01: if (!cnt_lsb_wrapped) set_narrow(BANK_NARROW_Q, cnt_lsb, rcmb_x_lsb_dout_pad, rcmb_y_lsb_dout_pad); - else set_narrow(BANK_NARROW_EXT, 8'd1, rcmb_x_lsb_dout_pad, rcmb_y_lsb_dout_pad); - 2'b10: clear_narrow; - 2'b11: clear_narrow; - // - endcase - // - end - // - endtask - - - task recombine_rectangle; - // - begin - // - case (rcmb_xy_valid) - // - 2'b01: inc_cnt_lsb; - 2'b10: inc_cnt_msb; - 2'b11: inc_cnt_both; - // - endcase -// // - case (rcmb_xy_valid) -// // - 2'b00: if (rcmb_msb_flag_delay_2) set_rdct(BANK_RCMB_MH, rcmb_msb_cnt_delay_2, rcmb_x_msb_delay_2_pad, rcmb_y_msb_delay_2_pad); - else clear_rdct; - 2'b01: set_rdct(BANK_RCMB_ML, cnt_lsb, rcmb_x_lsb_dout_pad, rcmb_y_lsb_dout_pad); - 2'b10: if (!cnt_msb_wrapped) begin - if (cnt_msb < 8'd2) clear_rdct; - else set_rdct(BANK_RCMB_MH, cnt_msb, rcmb_x_msb_dout_pad, rcmb_y_msb_dout_pad); - end else set_rdct(BANK_RCMB_EXT, 8'd0, rcmb_x_msb_dout_pad, rcmb_y_msb_dout_pad); - - 2'b11: set_rdct(BANK_RCMB_MH, cnt_lsb, rcmb_x_lsb_msb_carry_1_pad, rcmb_y_lsb_msb_carry_1_pad); -// // - endcase -// // - case (rcmb_xy_valid) -// // - 2'b00: if (rcmb_msb_flag_delay_2) advance_rcmb_msb_delay(16'hXXXX, 16'hXXXX, 8'd0, 1'b0); - 2'b10: begin - if ((cnt_msb < 8'd2) && !cnt_msb_wrapped) shift_rcmb_msb_carry(rcmb_x_msb_dout, rcmb_y_msb_dout); - if (cnt_msb_wrapped) advance_rcmb_msb_delay(16'hXXXX, 16'hXXXX, 8'd0, 1'b0); - end -// // - 2'b11: begin advance_rcmb_msb_delay(rcmb_x_msb_dout, rcmb_y_msb_dout, cnt_msb, 1'b1); - shift_rcmb_msb_carry({16{1'bX}}, {16{1'bX}}); - end -// // - endcase - // - end - // - endtask - - - always @(posedge clk) - // - if (ena) begin - rdy_adv <= 1'b0; - end else if (!rdy_reg) begin - // - case (rcmb_mode) - // - 2'd1: case (rcmb_xy_valid) - // - 2'b00: begin - // - if (rcmb_msb_flag_delay_2) begin - // - rdy_adv <= ~rcmb_msb_flag_delay_1; - // - end - // - end - // - endcase - // - 2'd2: case (rcmb_xy_valid) - // - 2'b01: rdy_adv <= cnt_lsb_wrapped; // - // - endcase - // - 2'd3: case (rcmb_xy_valid) - // - 2'b00: begin - // - if (rcmb_msb_flag_delay_2) begin - // - rdy_adv <= ~rcmb_msb_flag_delay_1; - // - end - // - end - // - endcase - // - endcase - // - end - - - - // add ready for mode=3 -endmodule |