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Remove AXI and WB interface modules

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Joachim Strömbergson 2022-09-27 09:48:54 +02:00
parent 98c2463dbc
commit 610522201b
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hw/application_fpga/core/picorv32/rtl/picorv32.v
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@ -2503,542 +2503,3 @@ module picorv32_pcpi_div (
end end
end end
endmodule endmodule
/***************************************************************
* picorv32_axi
***************************************************************/
module picorv32_axi #(
parameter [ 0:0] ENABLE_COUNTERS = 1,
parameter [ 0:0] ENABLE_COUNTERS64 = 1,
parameter [ 0:0] ENABLE_REGS_16_31 = 1,
parameter [ 0:0] ENABLE_REGS_DUALPORT = 1,
parameter [ 0:0] TWO_STAGE_SHIFT = 1,
parameter [ 0:0] BARREL_SHIFTER = 0,
parameter [ 0:0] TWO_CYCLE_COMPARE = 0,
parameter [ 0:0] TWO_CYCLE_ALU = 0,
parameter [ 0:0] COMPRESSED_ISA = 0,
parameter [ 0:0] CATCH_MISALIGN = 1,
parameter [ 0:0] CATCH_ILLINSN = 1,
parameter [ 0:0] ENABLE_PCPI = 0,
parameter [ 0:0] ENABLE_MUL = 0,
parameter [ 0:0] ENABLE_FAST_MUL = 0,
parameter [ 0:0] ENABLE_DIV = 0,
parameter [ 0:0] ENABLE_IRQ = 0,
parameter [ 0:0] ENABLE_IRQ_QREGS = 1,
parameter [ 0:0] ENABLE_IRQ_TIMER = 1,
parameter [ 0:0] ENABLE_TRACE = 0,
parameter [ 0:0] REGS_INIT_ZERO = 0,
parameter [31:0] MASKED_IRQ = 32'h 0000_0000,
parameter [31:0] LATCHED_IRQ = 32'h ffff_ffff,
parameter [31:0] PROGADDR_RESET = 32'h 0000_0000,
parameter [31:0] PROGADDR_IRQ = 32'h 0000_0010,
parameter [31:0] STACKADDR = 32'h ffff_ffff
) (
input clk, resetn,
output trap,
// AXI4-lite master memory interface
output mem_axi_awvalid,
input mem_axi_awready,
output [31:0] mem_axi_awaddr,
output [ 2:0] mem_axi_awprot,
output mem_axi_wvalid,
input mem_axi_wready,
output [31:0] mem_axi_wdata,
output [ 3:0] mem_axi_wstrb,
input mem_axi_bvalid,
output mem_axi_bready,
output mem_axi_arvalid,
input mem_axi_arready,
output [31:0] mem_axi_araddr,
output [ 2:0] mem_axi_arprot,
input mem_axi_rvalid,
output mem_axi_rready,
input [31:0] mem_axi_rdata,
// Pico Co-Processor Interface (PCPI)
output pcpi_valid,
output [31:0] pcpi_insn,
output [31:0] pcpi_rs1,
output [31:0] pcpi_rs2,
input pcpi_wr,
input [31:0] pcpi_rd,
input pcpi_wait,
input pcpi_ready,
// IRQ interface
input [31:0] irq,
output [31:0] eoi,
`ifdef RISCV_FORMAL
output rvfi_valid,
output [63:0] rvfi_order,
output [31:0] rvfi_insn,
output rvfi_trap,
output rvfi_halt,
output rvfi_intr,
output [ 4:0] rvfi_rs1_addr,
output [ 4:0] rvfi_rs2_addr,
output [31:0] rvfi_rs1_rdata,
output [31:0] rvfi_rs2_rdata,
output [ 4:0] rvfi_rd_addr,
output [31:0] rvfi_rd_wdata,
output [31:0] rvfi_pc_rdata,
output [31:0] rvfi_pc_wdata,
output [31:0] rvfi_mem_addr,
output [ 3:0] rvfi_mem_rmask,
output [ 3:0] rvfi_mem_wmask,
output [31:0] rvfi_mem_rdata,
output [31:0] rvfi_mem_wdata,
`endif
// Trace Interface
output trace_valid,
output [35:0] trace_data
);
wire mem_valid;
wire [31:0] mem_addr;
wire [31:0] mem_wdata;
wire [ 3:0] mem_wstrb;
wire mem_instr;
wire mem_ready;
wire [31:0] mem_rdata;
picorv32_axi_adapter axi_adapter (
.clk (clk ),
.resetn (resetn ),
.mem_axi_awvalid(mem_axi_awvalid),
.mem_axi_awready(mem_axi_awready),
.mem_axi_awaddr (mem_axi_awaddr ),
.mem_axi_awprot (mem_axi_awprot ),
.mem_axi_wvalid (mem_axi_wvalid ),
.mem_axi_wready (mem_axi_wready ),
.mem_axi_wdata (mem_axi_wdata ),
.mem_axi_wstrb (mem_axi_wstrb ),
.mem_axi_bvalid (mem_axi_bvalid ),
.mem_axi_bready (mem_axi_bready ),
.mem_axi_arvalid(mem_axi_arvalid),
.mem_axi_arready(mem_axi_arready),
.mem_axi_araddr (mem_axi_araddr ),
.mem_axi_arprot (mem_axi_arprot ),
.mem_axi_rvalid (mem_axi_rvalid ),
.mem_axi_rready (mem_axi_rready ),
.mem_axi_rdata (mem_axi_rdata ),
.mem_valid (mem_valid ),
.mem_instr (mem_instr ),
.mem_ready (mem_ready ),
.mem_addr (mem_addr ),
.mem_wdata (mem_wdata ),
.mem_wstrb (mem_wstrb ),
.mem_rdata (mem_rdata )
);
picorv32 #(
.ENABLE_COUNTERS (ENABLE_COUNTERS ),
.ENABLE_COUNTERS64 (ENABLE_COUNTERS64 ),
.ENABLE_REGS_16_31 (ENABLE_REGS_16_31 ),
.ENABLE_REGS_DUALPORT(ENABLE_REGS_DUALPORT),
.TWO_STAGE_SHIFT (TWO_STAGE_SHIFT ),
.BARREL_SHIFTER (BARREL_SHIFTER ),
.TWO_CYCLE_COMPARE (TWO_CYCLE_COMPARE ),
.TWO_CYCLE_ALU (TWO_CYCLE_ALU ),
.COMPRESSED_ISA (COMPRESSED_ISA ),
.CATCH_MISALIGN (CATCH_MISALIGN ),
.CATCH_ILLINSN (CATCH_ILLINSN ),
.ENABLE_PCPI (ENABLE_PCPI ),
.ENABLE_MUL (ENABLE_MUL ),
.ENABLE_FAST_MUL (ENABLE_FAST_MUL ),
.ENABLE_DIV (ENABLE_DIV ),
.ENABLE_IRQ (ENABLE_IRQ ),
.ENABLE_IRQ_QREGS (ENABLE_IRQ_QREGS ),
.ENABLE_IRQ_TIMER (ENABLE_IRQ_TIMER ),
.ENABLE_TRACE (ENABLE_TRACE ),
.REGS_INIT_ZERO (REGS_INIT_ZERO ),
.MASKED_IRQ (MASKED_IRQ ),
.LATCHED_IRQ (LATCHED_IRQ ),
.PROGADDR_RESET (PROGADDR_RESET ),
.PROGADDR_IRQ (PROGADDR_IRQ ),
.STACKADDR (STACKADDR )
) picorv32_core (
.clk (clk ),
.resetn (resetn),
.trap (trap ),
.mem_valid(mem_valid),
.mem_addr (mem_addr ),
.mem_wdata(mem_wdata),
.mem_wstrb(mem_wstrb),
.mem_instr(mem_instr),
.mem_ready(mem_ready),
.mem_rdata(mem_rdata),
.pcpi_valid(pcpi_valid),
.pcpi_insn (pcpi_insn ),
.pcpi_rs1 (pcpi_rs1 ),
.pcpi_rs2 (pcpi_rs2 ),
.pcpi_wr (pcpi_wr ),
.pcpi_rd (pcpi_rd ),
.pcpi_wait (pcpi_wait ),
.pcpi_ready(pcpi_ready),
.irq(irq),
.eoi(eoi),
`ifdef RISCV_FORMAL
.rvfi_valid (rvfi_valid ),
.rvfi_order (rvfi_order ),
.rvfi_insn (rvfi_insn ),
.rvfi_trap (rvfi_trap ),
.rvfi_halt (rvfi_halt ),
.rvfi_intr (rvfi_intr ),
.rvfi_rs1_addr (rvfi_rs1_addr ),
.rvfi_rs2_addr (rvfi_rs2_addr ),
.rvfi_rs1_rdata(rvfi_rs1_rdata),
.rvfi_rs2_rdata(rvfi_rs2_rdata),
.rvfi_rd_addr (rvfi_rd_addr ),
.rvfi_rd_wdata (rvfi_rd_wdata ),
.rvfi_pc_rdata (rvfi_pc_rdata ),
.rvfi_pc_wdata (rvfi_pc_wdata ),
.rvfi_mem_addr (rvfi_mem_addr ),
.rvfi_mem_rmask(rvfi_mem_rmask),
.rvfi_mem_wmask(rvfi_mem_wmask),
.rvfi_mem_rdata(rvfi_mem_rdata),
.rvfi_mem_wdata(rvfi_mem_wdata),
`endif
.trace_valid(trace_valid),
.trace_data (trace_data)
);
endmodule
/***************************************************************
* picorv32_axi_adapter
***************************************************************/
module picorv32_axi_adapter (
input clk, resetn,
// AXI4-lite master memory interface
output mem_axi_awvalid,
input mem_axi_awready,
output [31:0] mem_axi_awaddr,
output [ 2:0] mem_axi_awprot,
output mem_axi_wvalid,
input mem_axi_wready,
output [31:0] mem_axi_wdata,
output [ 3:0] mem_axi_wstrb,
input mem_axi_bvalid,
output mem_axi_bready,
output mem_axi_arvalid,
input mem_axi_arready,
output [31:0] mem_axi_araddr,
output [ 2:0] mem_axi_arprot,
input mem_axi_rvalid,
output mem_axi_rready,
input [31:0] mem_axi_rdata,
// Native PicoRV32 memory interface
input mem_valid,
input mem_instr,
output mem_ready,
input [31:0] mem_addr,
input [31:0] mem_wdata,
input [ 3:0] mem_wstrb,
output [31:0] mem_rdata
);
reg ack_awvalid;
reg ack_arvalid;
reg ack_wvalid;
reg xfer_done;
assign mem_axi_awvalid = mem_valid && |mem_wstrb && !ack_awvalid;
assign mem_axi_awaddr = mem_addr;
assign mem_axi_awprot = 0;
assign mem_axi_arvalid = mem_valid && !mem_wstrb && !ack_arvalid;
assign mem_axi_araddr = mem_addr;
assign mem_axi_arprot = mem_instr ? 3'b100 : 3'b000;
assign mem_axi_wvalid = mem_valid && |mem_wstrb && !ack_wvalid;
assign mem_axi_wdata = mem_wdata;
assign mem_axi_wstrb = mem_wstrb;
assign mem_ready = mem_axi_bvalid || mem_axi_rvalid;
assign mem_axi_bready = mem_valid && |mem_wstrb;
assign mem_axi_rready = mem_valid && !mem_wstrb;
assign mem_rdata = mem_axi_rdata;
always @(posedge clk) begin
if (!resetn) begin
ack_awvalid <= 0;
end else begin
xfer_done <= mem_valid && mem_ready;
if (mem_axi_awready && mem_axi_awvalid)
ack_awvalid <= 1;
if (mem_axi_arready && mem_axi_arvalid)
ack_arvalid <= 1;
if (mem_axi_wready && mem_axi_wvalid)
ack_wvalid <= 1;
if (xfer_done || !mem_valid) begin
ack_awvalid <= 0;
ack_arvalid <= 0;
ack_wvalid <= 0;
end
end
end
endmodule
/***************************************************************
* picorv32_wb
***************************************************************/
module picorv32_wb #(
parameter [ 0:0] ENABLE_COUNTERS = 1,
parameter [ 0:0] ENABLE_COUNTERS64 = 1,
parameter [ 0:0] ENABLE_REGS_16_31 = 1,
parameter [ 0:0] ENABLE_REGS_DUALPORT = 1,
parameter [ 0:0] TWO_STAGE_SHIFT = 1,
parameter [ 0:0] BARREL_SHIFTER = 0,
parameter [ 0:0] TWO_CYCLE_COMPARE = 0,
parameter [ 0:0] TWO_CYCLE_ALU = 0,
parameter [ 0:0] COMPRESSED_ISA = 0,
parameter [ 0:0] CATCH_MISALIGN = 1,
parameter [ 0:0] CATCH_ILLINSN = 1,
parameter [ 0:0] ENABLE_PCPI = 0,
parameter [ 0:0] ENABLE_MUL = 0,
parameter [ 0:0] ENABLE_FAST_MUL = 0,
parameter [ 0:0] ENABLE_DIV = 0,
parameter [ 0:0] ENABLE_IRQ = 0,
parameter [ 0:0] ENABLE_IRQ_QREGS = 1,
parameter [ 0:0] ENABLE_IRQ_TIMER = 1,
parameter [ 0:0] ENABLE_TRACE = 0,
parameter [ 0:0] REGS_INIT_ZERO = 0,
parameter [31:0] MASKED_IRQ = 32'h 0000_0000,
parameter [31:0] LATCHED_IRQ = 32'h ffff_ffff,
parameter [31:0] PROGADDR_RESET = 32'h 0000_0000,
parameter [31:0] PROGADDR_IRQ = 32'h 0000_0010,
parameter [31:0] STACKADDR = 32'h ffff_ffff
) (
output trap,
// Wishbone interfaces
input wb_rst_i,
input wb_clk_i,
output reg [31:0] wbm_adr_o,
output reg [31:0] wbm_dat_o,
input [31:0] wbm_dat_i,
output reg wbm_we_o,
output reg [3:0] wbm_sel_o,
output reg wbm_stb_o,
input wbm_ack_i,
output reg wbm_cyc_o,
// Pico Co-Processor Interface (PCPI)
output pcpi_valid,
output [31:0] pcpi_insn,
output [31:0] pcpi_rs1,
output [31:0] pcpi_rs2,
input pcpi_wr,
input [31:0] pcpi_rd,
input pcpi_wait,
input pcpi_ready,
// IRQ interface
input [31:0] irq,
output [31:0] eoi,
`ifdef RISCV_FORMAL
output rvfi_valid,
output [63:0] rvfi_order,
output [31:0] rvfi_insn,
output rvfi_trap,
output rvfi_halt,
output rvfi_intr,
output [ 4:0] rvfi_rs1_addr,
output [ 4:0] rvfi_rs2_addr,
output [31:0] rvfi_rs1_rdata,
output [31:0] rvfi_rs2_rdata,
output [ 4:0] rvfi_rd_addr,
output [31:0] rvfi_rd_wdata,
output [31:0] rvfi_pc_rdata,
output [31:0] rvfi_pc_wdata,
output [31:0] rvfi_mem_addr,
output [ 3:0] rvfi_mem_rmask,
output [ 3:0] rvfi_mem_wmask,
output [31:0] rvfi_mem_rdata,
output [31:0] rvfi_mem_wdata,
`endif
// Trace Interface
output trace_valid,
output [35:0] trace_data,
output mem_instr
);
wire mem_valid;
wire [31:0] mem_addr;
wire [31:0] mem_wdata;
wire [ 3:0] mem_wstrb;
reg mem_ready;
reg [31:0] mem_rdata;
wire clk;
wire resetn;
assign clk = wb_clk_i;
assign resetn = ~wb_rst_i;
picorv32 #(
.ENABLE_COUNTERS (ENABLE_COUNTERS ),
.ENABLE_COUNTERS64 (ENABLE_COUNTERS64 ),
.ENABLE_REGS_16_31 (ENABLE_REGS_16_31 ),
.ENABLE_REGS_DUALPORT(ENABLE_REGS_DUALPORT),
.TWO_STAGE_SHIFT (TWO_STAGE_SHIFT ),
.BARREL_SHIFTER (BARREL_SHIFTER ),
.TWO_CYCLE_COMPARE (TWO_CYCLE_COMPARE ),
.TWO_CYCLE_ALU (TWO_CYCLE_ALU ),
.COMPRESSED_ISA (COMPRESSED_ISA ),
.CATCH_MISALIGN (CATCH_MISALIGN ),
.CATCH_ILLINSN (CATCH_ILLINSN ),
.ENABLE_PCPI (ENABLE_PCPI ),
.ENABLE_MUL (ENABLE_MUL ),
.ENABLE_FAST_MUL (ENABLE_FAST_MUL ),
.ENABLE_DIV (ENABLE_DIV ),
.ENABLE_IRQ (ENABLE_IRQ ),
.ENABLE_IRQ_QREGS (ENABLE_IRQ_QREGS ),
.ENABLE_IRQ_TIMER (ENABLE_IRQ_TIMER ),
.ENABLE_TRACE (ENABLE_TRACE ),
.REGS_INIT_ZERO (REGS_INIT_ZERO ),
.MASKED_IRQ (MASKED_IRQ ),
.LATCHED_IRQ (LATCHED_IRQ ),
.PROGADDR_RESET (PROGADDR_RESET ),
.PROGADDR_IRQ (PROGADDR_IRQ ),
.STACKADDR (STACKADDR )
) picorv32_core (
.clk (clk ),
.resetn (resetn),
.trap (trap ),
.mem_valid(mem_valid),
.mem_addr (mem_addr ),
.mem_wdata(mem_wdata),
.mem_wstrb(mem_wstrb),
.mem_instr(mem_instr),
.mem_ready(mem_ready),
.mem_rdata(mem_rdata),
.pcpi_valid(pcpi_valid),
.pcpi_insn (pcpi_insn ),
.pcpi_rs1 (pcpi_rs1 ),
.pcpi_rs2 (pcpi_rs2 ),
.pcpi_wr (pcpi_wr ),
.pcpi_rd (pcpi_rd ),
.pcpi_wait (pcpi_wait ),
.pcpi_ready(pcpi_ready),
.irq(irq),
.eoi(eoi),
`ifdef RISCV_FORMAL
.rvfi_valid (rvfi_valid ),
.rvfi_order (rvfi_order ),
.rvfi_insn (rvfi_insn ),
.rvfi_trap (rvfi_trap ),
.rvfi_halt (rvfi_halt ),
.rvfi_intr (rvfi_intr ),
.rvfi_rs1_addr (rvfi_rs1_addr ),
.rvfi_rs2_addr (rvfi_rs2_addr ),
.rvfi_rs1_rdata(rvfi_rs1_rdata),
.rvfi_rs2_rdata(rvfi_rs2_rdata),
.rvfi_rd_addr (rvfi_rd_addr ),
.rvfi_rd_wdata (rvfi_rd_wdata ),
.rvfi_pc_rdata (rvfi_pc_rdata ),
.rvfi_pc_wdata (rvfi_pc_wdata ),
.rvfi_mem_addr (rvfi_mem_addr ),
.rvfi_mem_rmask(rvfi_mem_rmask),
.rvfi_mem_wmask(rvfi_mem_wmask),
.rvfi_mem_rdata(rvfi_mem_rdata),
.rvfi_mem_wdata(rvfi_mem_wdata),
`endif
.trace_valid(trace_valid),
.trace_data (trace_data)
);
localparam IDLE = 2'b00;
localparam WBSTART = 2'b01;
localparam WBEND = 2'b10;
reg [1:0] state;
wire we;
assign we = (mem_wstrb[0] | mem_wstrb[1] | mem_wstrb[2] | mem_wstrb[3]);
always @(posedge wb_clk_i) begin
if (wb_rst_i) begin
wbm_adr_o <= 0;
wbm_dat_o <= 0;
wbm_we_o <= 0;
wbm_sel_o <= 0;
wbm_stb_o <= 0;
wbm_cyc_o <= 0;
state <= IDLE;
end else begin
case (state)
IDLE: begin
if (mem_valid) begin
wbm_adr_o <= mem_addr;
wbm_dat_o <= mem_wdata;
wbm_we_o <= we;
wbm_sel_o <= mem_wstrb;
wbm_stb_o <= 1'b1;
wbm_cyc_o <= 1'b1;
state <= WBSTART;
end else begin
mem_ready <= 1'b0;
wbm_stb_o <= 1'b0;
wbm_cyc_o <= 1'b0;
wbm_we_o <= 1'b0;
end
end
WBSTART:begin
if (wbm_ack_i) begin
mem_rdata <= wbm_dat_i;
mem_ready <= 1'b1;
state <= WBEND;
wbm_stb_o <= 1'b0;
wbm_cyc_o <= 1'b0;
wbm_we_o <= 1'b0;
end
end
WBEND: begin
mem_ready <= 1'b0;
state <= IDLE;
end
default:
state <= IDLE;
endcase
end
end
endmodule