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Diffstat (limited to 'usrp2/control_lib/newfifo/buffer_pool.v')
| -rw-r--r-- | usrp2/control_lib/newfifo/buffer_pool.v | 283 |
1 files changed, 0 insertions, 283 deletions
diff --git a/usrp2/control_lib/newfifo/buffer_pool.v b/usrp2/control_lib/newfifo/buffer_pool.v deleted file mode 100644 index 41ac1deb3..000000000 --- a/usrp2/control_lib/newfifo/buffer_pool.v +++ /dev/null @@ -1,283 +0,0 @@ - -// Buffer pool. Contains 8 buffers, each 2K (512 by 32). Each buffer -// is a dual-ported RAM. Port A on each of them is indirectly connected -// to the wishbone bus by a bridge. Port B may be connected any one of the -// 8 (4 rd, 4 wr) FIFO-like streaming interaces, or disconnected. The wishbone bus -// provides access to all 8 buffers, and also controls the connections -// between the ports and the buffers, allocating them as needed. - -// wb_adr is 16 bits -- -// bits 13:11 select which buffer -// bits 10:2 select line in buffer -// bits 1:0 are unused (32-bit access only) - -// BUF_SIZE is in address lines (i.e. log2 of number of lines). -// For S3 it should be 9 (512 words, 2KB) -// For V5 it should be at least 10 (1024 words, 4KB) or 11 (2048 words, 8KB) - -module buffer_pool - #(parameter BUF_SIZE = 9, - parameter SET_ADDR = 64) - (input wb_clk_i, - input wb_rst_i, - input wb_we_i, - input wb_stb_i, - input [15:0] wb_adr_i, - input [31:0] wb_dat_i, - output [31:0] wb_dat_o, - output reg wb_ack_o, - output wb_err_o, - output wb_rty_o, - - input stream_clk, - input stream_rst, - - input set_stb, input [7:0] set_addr, input [31:0] set_data, - output [31:0] status, - output sys_int_o, - - output [31:0] s0, output [31:0] s1, output [31:0] s2, output [31:0] s3, - output [31:0] s4, output [31:0] s5, output [31:0] s6, output [31:0] s7, - - // Write Interfaces - input [31:0] wr0_data_i, input [3:0] wr0_flags_i, input wr0_ready_i, output wr0_ready_o, - input [31:0] wr1_data_i, input [3:0] wr1_flags_i, input wr1_ready_i, output wr1_ready_o, - input [31:0] wr2_data_i, input [3:0] wr2_flags_i, input wr2_ready_i, output wr2_ready_o, - input [31:0] wr3_data_i, input [3:0] wr3_flags_i, input wr3_ready_i, output wr3_ready_o, - - // Read Interfaces - output [31:0] rd0_data_o, output [3:0] rd0_flags_o, output rd0_ready_o, input rd0_ready_i, - output [31:0] rd1_data_o, output [3:0] rd1_flags_o, output rd1_ready_o, input rd1_ready_i, - output [31:0] rd2_data_o, output [3:0] rd2_flags_o, output rd2_ready_o, input rd2_ready_i, - output [31:0] rd3_data_o, output [3:0] rd3_flags_o, output rd3_ready_o, input rd3_ready_i - ); - - wire [7:0] sel_a; - - wire [BUF_SIZE-1:0] buf_addra = wb_adr_i[BUF_SIZE+1:2]; // ignore address 1:0, 32-bit access only - wire [2:0] which_buf = wb_adr_i[BUF_SIZE+4:BUF_SIZE+2]; // address 15:14 selects the buffer pool - - decoder_3_8 dec(.sel(which_buf),.res(sel_a)); - - genvar i; - - wire go; - - reg [2:0] port[0:7]; - reg [3:0] read_src[0:3]; - reg [3:0] write_src[0:3]; - - wire [7:0] done; - wire [7:0] error; - wire [7:0] idle; - - wire [31:0] buf_doa[0:7]; - - wire [7:0] buf_enb; - wire [7:0] buf_web; - wire [BUF_SIZE-1:0] buf_addrb[0:7]; - wire [31:0] buf_dib[0:7]; - wire [31:0] buf_dob[0:7]; - - wire [31:0] wr_data_i[0:7]; - wire [3:0] wr_flags_i[0:7]; - wire [7:0] wr_ready_i; - wire [7:0] wr_ready_o; - - wire [31:0] rd_data_o[0:7]; - wire [3:0] rd_flags_o[0:7]; - wire [7:0] rd_ready_o; - wire [7:0] rd_ready_i; - - assign status = {8'd0,idle[7:0],error[7:0],done[7:0]}; - - assign s0 = buf_addrb[0]; - assign s1 = buf_addrb[1]; - assign s2 = buf_addrb[2]; - assign s3 = buf_addrb[3]; - assign s4 = buf_addrb[4]; - assign s5 = buf_addrb[5]; - assign s6 = buf_addrb[6]; - assign s7 = buf_addrb[7]; - - wire [31:0] fifo_ctrl; - setting_reg #(.my_addr(SET_ADDR)) - sreg(.clk(stream_clk),.rst(stream_rst),.strobe(set_stb),.addr(set_addr),.in(set_data), - .out(fifo_ctrl),.changed(go)); - - integer k; - always @(posedge stream_clk) - if(stream_rst) - for(k=0;k<8;k=k+1) - port[k] <= 4; // disabled - else - for(k=0;k<8;k=k+1) - if(go & (fifo_ctrl[31:28]==k)) - port[k] <= fifo_ctrl[27:25]; - - always @(posedge stream_clk) - if(stream_rst) - for(k=0;k<4;k=k+1) - read_src[k] <= 8; // disabled - else - for(k=0;k<4;k=k+1) - if(go & fifo_ctrl[22] & (fifo_ctrl[27:25]==k)) - read_src[k] <= fifo_ctrl[31:28]; - - always @(posedge stream_clk) - if(stream_rst) - for(k=0;k<4;k=k+1) - write_src[k] <= 8; // disabled - else - for(k=0;k<4;k=k+1) - if(go & fifo_ctrl[23] & (fifo_ctrl[27:25]==k)) - write_src[k] <= fifo_ctrl[31:28]; - - generate - for(i=0;i<8;i=i+1) - begin : gen_buffer - RAMB16_S36_S36 dpram - (.DOA(buf_doa[i]),.ADDRA(buf_addra),.CLKA(wb_clk_i),.DIA(wb_dat_i),.DIPA(4'h0), - .ENA(wb_stb_i & sel_a[i]),.SSRA(0),.WEA(wb_we_i), - .DOB(buf_dob[i]),.ADDRB(buf_addrb[i]),.CLKB(stream_clk),.DIB(buf_dib[i]),.DIPB(4'h0), - .ENB(buf_enb[i]),.SSRB(0),.WEB(buf_web[i]) ); - -/* - ram_2port #(.DWIDTH(32),.AWIDTH(BUF_SIZE)) buffer - (.clka(wb_clk_i),.ena(wb_stb_i & sel_a[i]),.wea(wb_we_i), - .addra(buf_addra),.dia(wb_dat_i),.doa(buf_doa[i]), - .clkb(stream_clk),.enb(buf_enb[i]),.web(buf_web[i]), - .addrb(buf_addrb[i]),.dib(buf_dib[i]),.dob(buf_dob[i])); - - */ - - buffer_int #(.BUF_NUM(i),.BUF_SIZE(BUF_SIZE)) buffer_int - (.clk(stream_clk),.rst(stream_rst), - .ctrl_word(fifo_ctrl),.go(go & (fifo_ctrl[31:28]==i)), - .done(done[i]),.error(error[i]),.idle(idle[i]), - .en_o(buf_enb[i]), - .we_o(buf_web[i]), - .addr_o(buf_addrb[i]), - .dat_to_buf(buf_dib[i]), - .dat_from_buf(buf_dob[i]), - .wr_data_i(wr_data_i[i]), - .wr_flags_i(wr_flags_i[i]), - .wr_ready_i(wr_ready_i[i]), - .wr_ready_o(wr_ready_o[i]), - .rd_data_o(rd_data_o[i]), - .rd_flags_o(rd_flags_o[i]), - .rd_ready_o(rd_ready_o[i]), - .rd_ready_i(rd_ready_i[i]) ); - mux4 #(.WIDTH(37)) - mux4_wr (.en(~port[i][2]),.sel(port[i][1:0]), - .i0({wr0_data_i,wr0_flags_i,wr0_ready_i}), - .i1({wr1_data_i,wr1_flags_i,wr1_ready_i}), - .i2({wr2_data_i,wr2_flags_i,wr2_ready_i}), - .i3({wr3_data_i,wr3_flags_i,wr3_ready_i}), - .o({wr_data_i[i],wr_flags_i[i],wr_ready_i[i]}) ); - mux4 #(.WIDTH(1)) - mux4_rd (.en(~port[i][2]),.sel(port[i][1:0]), - .i0(rd0_ready_i),.i1(rd1_ready_i),.i2(rd2_ready_i),.i3(rd3_ready_i), - .o(rd_ready_i[i])); - end // block: gen_buffer - endgenerate - - //---------------------------------------------------------------------- - // Wishbone Outputs - - // Use the following lines if ram output and mux can be made fast enough - - assign wb_err_o = 1'b0; // Unused for now - assign wb_rty_o = 1'b0; // Unused for now - - always @(posedge wb_clk_i) - wb_ack_o <= wb_stb_i & ~wb_ack_o; - assign wb_dat_o = buf_doa[which_buf]; - - // Use this if we can't make the RAM+MUX fast enough - // reg [31:0] wb_dat_o_reg; - // reg stb_d1; - - // always @(posedge wb_clk_i) - // begin - // wb_dat_o_reg <= buf_doa[which_buf]; - // stb_d1 <= wb_stb_i; - // wb_ack_o <= (stb_d1 & ~wb_ack_o) | (wb_we_i & wb_stb_i); - // end - //assign wb_dat_o = wb_dat_o_reg; - - mux8 #(.WIDTH(1)) - mux8_wr0(.en(~write_src[0][3]),.sel(write_src[0][2:0]), - .i0(wr_ready_o[0]), .i1(wr_ready_o[1]), .i2(wr_ready_o[2]), .i3(wr_ready_o[3]), - .i4(wr_ready_o[4]), .i5(wr_ready_o[5]), .i6(wr_ready_o[6]), .i7(wr_ready_o[7]), - .o(wr0_ready_o)); - - mux8 #(.WIDTH(1)) - mux8_wr1(.en(~write_src[1][3]),.sel(write_src[1][2:0]), - .i0(wr_ready_o[0]), .i1(wr_ready_o[1]), .i2(wr_ready_o[2]), .i3(wr_ready_o[3]), - .i4(wr_ready_o[4]), .i5(wr_ready_o[5]), .i6(wr_ready_o[6]), .i7(wr_ready_o[7]), - .o(wr1_ready_o)); - - mux8 #(.WIDTH(1)) - mux8_wr2(.en(~write_src[2][3]),.sel(write_src[2][2:0]), - .i0(wr_ready_o[0]), .i1(wr_ready_o[1]), .i2(wr_ready_o[2]), .i3(wr_ready_o[3]), - .i4(wr_ready_o[4]), .i5(wr_ready_o[5]), .i6(wr_ready_o[6]), .i7(wr_ready_o[7]), - .o(wr2_ready_o)); - - mux8 #(.WIDTH(1)) - mux8_wr3(.en(~write_src[3][3]),.sel(write_src[3][2:0]), - .i0(wr_ready_o[0]), .i1(wr_ready_o[1]), .i2(wr_ready_o[2]), .i3(wr_ready_o[3]), - .i4(wr_ready_o[4]), .i5(wr_ready_o[5]), .i6(wr_ready_o[6]), .i7(wr_ready_o[7]), - .o(wr3_ready_o)); - - mux8 #(.WIDTH(37)) - mux8_rd0(.en(~read_src[0][3]),.sel(read_src[0][2:0]), - .i0({rd_data_o[0],rd_flags_o[0],rd_ready_o[0]}), - .i1({rd_data_o[1],rd_flags_o[1],rd_ready_o[1]}), - .i2({rd_data_o[2],rd_flags_o[2],rd_ready_o[2]}), - .i3({rd_data_o[3],rd_flags_o[3],rd_ready_o[3]}), - .i4({rd_data_o[4],rd_flags_o[4],rd_ready_o[4]}), - .i5({rd_data_o[5],rd_flags_o[5],rd_ready_o[5]}), - .i6({rd_data_o[6],rd_flags_o[6],rd_ready_o[6]}), - .i7({rd_data_o[7],rd_flags_o[7],rd_ready_o[7]}), - .o({rd0_data_o,rd0_flags_o,rd0_ready_o})); - - mux8 #(.WIDTH(37)) - mux8_rd1(.en(~read_src[1][3]),.sel(read_src[1][2:0]), - .i0({rd_data_o[0],rd_flags_o[0],rd_ready_o[0]}), - .i1({rd_data_o[1],rd_flags_o[1],rd_ready_o[1]}), - .i2({rd_data_o[2],rd_flags_o[2],rd_ready_o[2]}), - .i3({rd_data_o[3],rd_flags_o[3],rd_ready_o[3]}), - .i4({rd_data_o[4],rd_flags_o[4],rd_ready_o[4]}), - .i5({rd_data_o[5],rd_flags_o[5],rd_ready_o[5]}), - .i6({rd_data_o[6],rd_flags_o[6],rd_ready_o[6]}), - .i7({rd_data_o[7],rd_flags_o[7],rd_ready_o[7]}), - .o({rd1_data_o,rd1_flags_o,rd1_ready_o})); - - mux8 #(.WIDTH(37)) - mux8_rd2(.en(~read_src[2][3]),.sel(read_src[2][2:0]), - .i0({rd_data_o[0],rd_flags_o[0],rd_ready_o[0]}), - .i1({rd_data_o[1],rd_flags_o[1],rd_ready_o[1]}), - .i2({rd_data_o[2],rd_flags_o[2],rd_ready_o[2]}), - .i3({rd_data_o[3],rd_flags_o[3],rd_ready_o[3]}), - .i4({rd_data_o[4],rd_flags_o[4],rd_ready_o[4]}), - .i5({rd_data_o[5],rd_flags_o[5],rd_ready_o[5]}), - .i6({rd_data_o[6],rd_flags_o[6],rd_ready_o[6]}), - .i7({rd_data_o[7],rd_flags_o[7],rd_ready_o[7]}), - .o({rd2_data_o,rd2_flags_o,rd2_ready_o})); - - mux8 #(.WIDTH(37)) - mux8_rd3(.en(~read_src[3][3]),.sel(read_src[3][2:0]), - .i0({rd_data_o[0],rd_flags_o[0],rd_ready_o[0]}), - .i1({rd_data_o[1],rd_flags_o[1],rd_ready_o[1]}), - .i2({rd_data_o[2],rd_flags_o[2],rd_ready_o[2]}), - .i3({rd_data_o[3],rd_flags_o[3],rd_ready_o[3]}), - .i4({rd_data_o[4],rd_flags_o[4],rd_ready_o[4]}), - .i5({rd_data_o[5],rd_flags_o[5],rd_ready_o[5]}), - .i6({rd_data_o[6],rd_flags_o[6],rd_ready_o[6]}), - .i7({rd_data_o[7],rd_flags_o[7],rd_ready_o[7]}), - .o({rd3_data_o,rd3_flags_o,rd3_ready_o})); - - assign sys_int_o = (|error) | (|done); - -endmodule // buffer_pool |