自己写的一个zynq系列dma 将stream 数据从pl读取写入ps的ddr
作者：互联网
`timescale 1ns / 1ps
module all
(
input [31:0] indata_data,
input indata_enable,
input aclk,
input aresetn,
//write address channal
output reg [31:0] outdata_awaddr, //1
output reg [7:0] outdata_awlen, //2
output reg [2:0] outdata_awsize, //3
output reg [1:0] outdata_awburst, //4
output reg [3:0] outdata_awcache, //5
output reg [2:0] outdata_awprot, //6
output reg outdata_awvalid, //7
input outdata_awready, //8
//write data channal
output reg [31:0] outdata_wdata,
output reg [3:0] outdata_wstrb,
output reg outdata_wlast,
output reg outdata_wvalid,
input outdata_wready,
//write response channal
input [1:0] outdata_bresp,
input outdata_bvalid,
output reg outdata_bready,
//ddr3 address control
input [31:0] ddr3_address_w_en,
input [31:0] ddr3_address_i_en,
input [31:0] ddr3_address_a_s,
input [31:0] ddr3_address_a_e,
input [31:0] ddr3_address_a_i,
input [31:0] ddr3_address_b_s,
input [31:0] ddr3_address_b_e,
input [31:0] ddr3_address_b_i,
//output for irq
output reg irq_a,
output reg irq_b,
//port for debug
output [7:0] state_port,
output [15:0] full_port,
output [11:0] memory_w_address_port,
output [11:0] memory_r_address_port
);
reg [7:0] memory_r_state;
assign state_port = memory_r_state;
//this variables are is for the memory read and write
reg [11:0] memory_w_address;
reg [11:0] memory_r_address;
reg [31:0] memory[4095:0];
assign memory_r_address_port=memory_r_address;
assign memory_w_address_port=memory_w_address;
//*******************************************************
//this part is for the memory_full which for is the for blank control
//*******************************************************
reg [15:0] memory_full;
assign full_port=memory_full;
always @ (posedge aclk)
begin
if(!aresetn)
begin
memory_full<=16'd0;
end
else
begin
if(memory_w_address[7:0]==8'hff)
begin
memory_full[memory_w_address[11:8]]<=1'b1;
end
else
begin
if(memory_r_address[7:0]==8'hff)
begin
memory_full[memory_r_address[11:8]]<=1'b0;
end
end
end
end
//*******************************************************
//this part is for the memory write task
//*******************************************************
wire memory_w_enable;
assign memory_w_enable=indata_enable;
always @ (posedge aclk)
begin
if(!aresetn)
begin
memory_w_address<=12'd0;
end
else
begin
if(memory_w_enable)
begin
if((!memory_full[memory_w_address[11:8]+2'd2])&(!memory_full[memory_w_address[11:8]+2'd1]))
begin
memory[memory_w_address]<=indata_data;
memory_w_address<=memory_w_address+1'b1;
end
end
end
end
//*******************************************************
//this part is the memory read task and the axi_4_full protocol for the ddr3
//*******************************************************
reg irq_a_pre;
reg irq_b_pre;
reg [31:0] ddr3_address;
always @ (posedge aclk)
begin
if(!aresetn)
begin
memory_r_address <= 12'h0;
memory_r_state <= 8'd0;
ddr3_address <= 32'h00000000;
end
else
begin
case(memory_r_state)
8'd0:
begin
if(ddr3_address_w_en[0]) //for write enable
begin
if(memory_full[memory_r_address[11:8]]&(memory_full[memory_r_address[11:8]+2'd1]))
begin
memory_r_state <= 8'd1;
end
end
irq_a_pre <=1'b0;
irq_b_pre <=1'b0;
end
//address control
8'd1:
begin
if(outdata_awready)
begin
memory_r_state <= 8'd2;
ddr3_address <= (ddr3_address<ddr3_address_a_s)?ddr3_address_a_s:
(ddr3_address<ddr3_address_a_e)?(ddr3_address+32'd1024):
(ddr3_address<ddr3_address_b_s)?ddr3_address_b_s:
(ddr3_address<ddr3_address_b_e)?(ddr3_address+32'd1024):ddr3_address_a_s;
end
end
8'd2:
begin
memory_r_state <= 8'd3;
outdata_awvalid <= 1'b1;
outdata_awaddr <= ddr3_address;
outdata_awlen <= 8'hff;
outdata_awsize <= 3'b010;
outdata_awburst <= 2'd1;
outdata_awcache <= 4'd0;
outdata_awprot <= 3'b000;
outdata_wvalid <= 1'b1;
outdata_wlast <= 1'b0;
outdata_wstrb <= 4'b1111;
outdata_wdata <= memory[memory_r_address];
memory_r_address <= memory_r_address+1'b1;
end
8'd3:
begin
memory_r_state <= 8'd4;
outdata_awvalid <= 1'b0;
outdata_awaddr <= 32'd0;
outdata_awlen <= 8'h0;
outdata_awsize <= 3'b000;
outdata_awburst <= 2'd0;
outdata_awcache <= 4'hf;
outdata_awprot <= 3'b111;
end
8'd4:
begin
if(outdata_wready)
begin
memory_r_address <= memory_r_address+1'b1;
outdata_wdata <= memory[memory_r_address];
end
if(memory_r_address[7:0]==8'hff)
begin
outdata_wlast <= 1'b1;
memory_r_state <= 8'd5;
end
end
8'd5:
begin
memory_r_state <= 8'd6;
outdata_wvalid <= 1'b0;
outdata_wlast <= 1'b0;
end
8'd6:
begin
if(outdata_bvalid)
begin
outdata_bready <=1'b1;
memory_r_state <=8'd7;
end
end
8'd7:
begin
if(!outdata_bvalid)
begin
outdata_bready <=1'b0;
memory_r_state <=8'd8;
end
end
8'd8:
begin
memory_r_state <=8'd0;
irq_a_pre <=(ddr3_address==ddr3_address_a_i);
irq_b_pre <=(ddr3_address==ddr3_address_b_i);
end
endcase
end
end
//*******************************************************
//this part is for irq control including enable and clear
//*******************************************************
always @ (posedge aclk)
begin
if(!aresetn)
begin
irq_a<=1'b0;
irq_b<=1'b0;
end
else
begin
if(ddr3_address_i_en[0])
begin
irq_a<=(irq_a)?1'b1:irq_a_pre;
irq_b<=(irq_b)?1'b1:irq_b_pre;
end
else
begin
irq_a<=1'b0;
irq_b<=1'b0;
end
end
end
endmodule
`timescale 1 ns / 1 ps
module all_master #
(
// Users to add parameters here
// User parameters ends
// Do not modify the parameters beyond this line
// Width of S_AXI data bus
parameter integer C_S_AXI_DATA_WIDTH = 32,
// Width of S_AXI address bus
parameter integer C_S_AXI_ADDR_WIDTH = 5
)
(
// Users to add ports here
output [31:0] ddr3_address_w_en,
output [31:0] ddr3_address_i_en,
output [31:0] ddr3_address_a_s,
output [31:0] ddr3_address_a_e,
output [31:0] ddr3_address_a_i,
output [31:0] ddr3_address_b_s,
output [31:0] ddr3_address_b_e,
output [31:0] ddr3_address_b_i,
// User ports ends
// Do not modify the ports beyond this line
// Global Clock Signal
input wire S_AXI_ACLK,
// Global Reset Signal. This Signal is Active LOW
input wire S_AXI_ARESETN,
// Write address (issued by master, acceped by Slave)
input wire [C_S_AXI_ADDR_WIDTH-1 : 0] S_AXI_AWADDR,
// Write channel Protection type. This signal indicates the
// privilege and security level of the transaction, and whether
// the transaction is a data access or an instruction access.
input wire [2 : 0] S_AXI_AWPROT,
// Write address valid. This signal indicates that the master signaling
// valid write address and control information.
input wire S_AXI_AWVALID,
// Write address ready. This signal indicates that the slave is ready
// to accept an address and associated control signals.
output wire S_AXI_AWREADY,
// Write data (issued by master, acceped by Slave)
input wire [C_S_AXI_DATA_WIDTH-1 : 0] S_AXI_WDATA,
// Write strobes. This signal indicates which byte lanes hold
// valid data. There is one write strobe bit for each eight
// bits of the write data bus.
input wire [(C_S_AXI_DATA_WIDTH/8)-1 : 0] S_AXI_WSTRB,
// Write valid. This signal indicates that valid write
// data and strobes are available.
input wire S_AXI_WVALID,
// Write ready. This signal indicates that the slave
// can accept the write data.
output wire S_AXI_WREADY,
// Write response. This signal indicates the status
// of the write transaction.
output wire [1 : 0] S_AXI_BRESP,
// Write response valid. This signal indicates that the channel
// is signaling a valid write response.
output wire S_AXI_BVALID,
// Response ready. This signal indicates that the master
// can accept a write response.
input wire S_AXI_BREADY,
// Read address (issued by master, acceped by Slave)
input wire [C_S_AXI_ADDR_WIDTH-1 : 0] S_AXI_ARADDR,
// Protection type. This signal indicates the privilege
// and security level of the transaction, and whether the
// transaction is a data access or an instruction access.
input wire [2 : 0] S_AXI_ARPROT,
// Read address valid. This signal indicates that the channel
// is signaling valid read address and control information.
input wire S_AXI_ARVALID,
// Read address ready. This signal indicates that the slave is
// ready to accept an address and associated control signals.
output wire S_AXI_ARREADY,
// Read data (issued by slave)
output wire [C_S_AXI_DATA_WIDTH-1 : 0] S_AXI_RDATA,
// Read response. This signal indicates the status of the
// read transfer.
output wire [1 : 0] S_AXI_RRESP,
// Read valid. This signal indicates that the channel is
// signaling the required read data.
output wire S_AXI_RVALID,
// Read ready. This signal indicates that the master can
// accept the read data and response information.
input wire S_AXI_RREADY
);
// AXI4LITE signals
reg [C_S_AXI_ADDR_WIDTH-1 : 0] axi_awaddr;
reg axi_awready;
reg axi_wready;
reg [1 : 0] axi_bresp;
reg axi_bvalid;
reg [C_S_AXI_ADDR_WIDTH-1 : 0] axi_araddr;
reg axi_arready;
reg [C_S_AXI_DATA_WIDTH-1 : 0] axi_rdata;
reg [1 : 0] axi_rresp;
reg axi_rvalid;
// Example-specific design signals
// local parameter for addressing 32 bit / 64 bit C_S_AXI_DATA_WIDTH
// ADDR_LSB is used for addressing 32/64 bit registers/memories
// ADDR_LSB = 2 for 32 bits (n downto 2)
// ADDR_LSB = 3 for 64 bits (n downto 3)
localparam integer ADDR_LSB = (C_S_AXI_DATA_WIDTH/32) + 1;
localparam integer OPT_MEM_ADDR_BITS = 2;
//----------------------------------------------
//-- Signals for user logic register space example
//------------------------------------------------
//-- Number of Slave Registers 8
reg [C_S_AXI_DATA_WIDTH-1:0] slv_reg0;
reg [C_S_AXI_DATA_WIDTH-1:0] slv_reg1;
reg [C_S_AXI_DATA_WIDTH-1:0] slv_reg2;
reg [C_S_AXI_DATA_WIDTH-1:0] slv_reg3;
reg [C_S_AXI_DATA_WIDTH-1:0] slv_reg4;
reg [C_S_AXI_DATA_WIDTH-1:0] slv_reg5;
reg [C_S_AXI_DATA_WIDTH-1:0] slv_reg6;
reg [C_S_AXI_DATA_WIDTH-1:0] slv_reg7;
wire slv_reg_rden;
wire slv_reg_wren;
reg [C_S_AXI_DATA_WIDTH-1:0] reg_data_out;
integer byte_index;
reg aw_en;
// I/O Connections assignments
assign S_AXI_AWREADY = axi_awready;
assign S_AXI_WREADY = axi_wready;
assign S_AXI_BRESP = axi_bresp;
assign S_AXI_BVALID = axi_bvalid;
assign S_AXI_ARREADY = axi_arready;
assign S_AXI_RDATA = axi_rdata;
assign S_AXI_RRESP = axi_rresp;
assign S_AXI_RVALID = axi_rvalid;
// Implement axi_awready generation
// axi_awready is asserted for one S_AXI_ACLK clock cycle when both
// S_AXI_AWVALID and S_AXI_WVALID are asserted. axi_awready is
// de-asserted when reset is low.
always @( posedge S_AXI_ACLK )
begin
if ( S_AXI_ARESETN == 1'b0 )
begin
axi_awready <= 1'b0;
aw_en <= 1'b1;
end
else
begin
if (~axi_awready && S_AXI_AWVALID && S_AXI_WVALID && aw_en)
begin
// slave is ready to accept write address when
// there is a valid write address and write data
// on the write address and data bus. This design
// expects no outstanding transactions.
axi_awready <= 1'b1;
aw_en <= 1'b0;
end
else if (S_AXI_BREADY && axi_bvalid)
begin
aw_en <= 1'b1;
axi_awready <= 1'b0;
end
else
begin
axi_awready <= 1'b0;
end
end
end
// Implement axi_awaddr latching
// This process is used to latch the address when both
// S_AXI_AWVALID and S_AXI_WVALID are valid.
always @( posedge S_AXI_ACLK )
begin
if ( S_AXI_ARESETN == 1'b0 )
begin
axi_awaddr <= 0;
end
else
begin
if (~axi_awready && S_AXI_AWVALID && S_AXI_WVALID && aw_en)
begin
// Write Address latching
axi_awaddr <= S_AXI_AWADDR;
end
end
end
// Implement axi_wready generation
// axi_wready is asserted for one S_AXI_ACLK clock cycle when both
// S_AXI_AWVALID and S_AXI_WVALID are asserted. axi_wready is
// de-asserted when reset is low.
always @( posedge S_AXI_ACLK )
begin
if ( S_AXI_ARESETN == 1'b0 )
begin
axi_wready <= 1'b0;
end
else
begin
if (~axi_wready && S_AXI_WVALID && S_AXI_AWVALID && aw_en )
begin
// slave is ready to accept write data when
// there is a valid write address and write data
// on the write address and data bus. This design
// expects no outstanding transactions.
axi_wready <= 1'b1;
end
else
begin
axi_wready <= 1'b0;
end
end
end
// Implement memory mapped register select and write logic generation
// The write data is accepted and written to memory mapped registers when
// axi_awready, S_AXI_WVALID, axi_wready and S_AXI_WVALID are asserted. Write strobes are used to
// select byte enables of slave registers while writing.
// These registers are cleared when reset (active low) is applied.
// Slave register write enable is asserted when valid address and data are available
// and the slave is ready to accept the write address and write data.
assign slv_reg_wren = axi_wready && S_AXI_WVALID && axi_awready && S_AXI_AWVALID;
always @( posedge S_AXI_ACLK )
begin
if ( S_AXI_ARESETN == 1'b0 )
begin
slv_reg0 <= 0;
slv_reg1 <= 0;
slv_reg2 <= 0;
slv_reg3 <= 0;
slv_reg4 <= 0;
slv_reg5 <= 0;
slv_reg6 <= 0;
slv_reg7 <= 0;
end
else begin
if (slv_reg_wren)
begin
case ( axi_awaddr[ADDR_LSB+OPT_MEM_ADDR_BITS:ADDR_LSB] )
3'h0:
for ( byte_index = 0; byte_index <= (C_S_AXI_DATA_WIDTH/8)-1; byte_index = byte_index+1 )
if ( S_AXI_WSTRB[byte_index] == 1 ) begin
// Respective byte enables are asserted as per write strobes
// Slave register 0
slv_reg0[(byte_index*8) +: 8] <= S_AXI_WDATA[(byte_index*8) +: 8];
end
3'h1:
for ( byte_index = 0; byte_index <= (C_S_AXI_DATA_WIDTH/8)-1; byte_index = byte_index+1 )
if ( S_AXI_WSTRB[byte_index] == 1 ) begin
// Respective byte enables are asserted as per write strobes
// Slave register 1
slv_reg1[(byte_index*8) +: 8] <= S_AXI_WDATA[(byte_index*8) +: 8];
end
3'h2:
for ( byte_index = 0; byte_index <= (C_S_AXI_DATA_WIDTH/8)-1; byte_index = byte_index+1 )
if ( S_AXI_WSTRB[byte_index] == 1 ) begin
// Respective byte enables are asserted as per write strobes
// Slave register 2
slv_reg2[(byte_index*8) +: 8] <= S_AXI_WDATA[(byte_index*8) +: 8];
end
3'h3:
for ( byte_index = 0; byte_index <= (C_S_AXI_DATA_WIDTH/8)-1; byte_index = byte_index+1 )
if ( S_AXI_WSTRB[byte_index] == 1 ) begin
// Respective byte enables are asserted as per write strobes
// Slave register 3
slv_reg3[(byte_index*8) +: 8] <= S_AXI_WDATA[(byte_index*8) +: 8];
end
3'h4:
for ( byte_index = 0; byte_index <= (C_S_AXI_DATA_WIDTH/8)-1; byte_index = byte_index+1 )
if ( S_AXI_WSTRB[byte_index] == 1 ) begin
// Respective byte enables are asserted as per write strobes
// Slave register 4
slv_reg4[(byte_index*8) +: 8] <= S_AXI_WDATA[(byte_index*8) +: 8];
end
3'h5:
for ( byte_index = 0; byte_index <= (C_S_AXI_DATA_WIDTH/8)-1; byte_index = byte_index+1 )
if ( S_AXI_WSTRB[byte_index] == 1 ) begin
// Respective byte enables are asserted as per write strobes
// Slave register 5
slv_reg5[(byte_index*8) +: 8] <= S_AXI_WDATA[(byte_index*8) +: 8];
end
3'h6:
for ( byte_index = 0; byte_index <= (C_S_AXI_DATA_WIDTH/8)-1; byte_index = byte_index+1 )
if ( S_AXI_WSTRB[byte_index] == 1 ) begin
// Respective byte enables are asserted as per write strobes
// Slave register 6
slv_reg6[(byte_index*8) +: 8] <= S_AXI_WDATA[(byte_index*8) +: 8];
end
3'h7:
for ( byte_index = 0; byte_index <= (C_S_AXI_DATA_WIDTH/8)-1; byte_index = byte_index+1 )
if ( S_AXI_WSTRB[byte_index] == 1 ) begin
// Respective byte enables are asserted as per write strobes
// Slave register 7
slv_reg7[(byte_index*8) +: 8] <= S_AXI_WDATA[(byte_index*8) +: 8];
end
default : begin
slv_reg0 <= slv_reg0;
slv_reg1 <= slv_reg1;
slv_reg2 <= slv_reg2;
slv_reg3 <= slv_reg3;
slv_reg4 <= slv_reg4;
slv_reg5 <= slv_reg5;
slv_reg6 <= slv_reg6;
slv_reg7 <= slv_reg7;
end
endcase
end
end
end
// Implement write response logic generation
// The write response and response valid signals are asserted by the slave
// when axi_wready, S_AXI_WVALID, axi_wready and S_AXI_WVALID are asserted.
// This marks the acceptance of address and indicates the status of
// write transaction.
always @( posedge S_AXI_ACLK )
begin
if ( S_AXI_ARESETN == 1'b0 )
begin
axi_bvalid <= 0;
axi_bresp <= 2'b0;
end
else
begin
if (axi_awready && S_AXI_AWVALID && ~axi_bvalid && axi_wready && S_AXI_WVALID)
begin
// indicates a valid write response is available
axi_bvalid <= 1'b1;
axi_bresp <= 2'b0; // 'OKAY' response
end // work error responses in future
else
begin
if (S_AXI_BREADY && axi_bvalid)
//check if bready is asserted while bvalid is high)
//(there is a possibility that bready is always asserted high)
begin
axi_bvalid <= 1'b0;
end
end
end
end
// Implement axi_arready generation
// axi_arready is asserted for one S_AXI_ACLK clock cycle when
// S_AXI_ARVALID is asserted. axi_awready is
// de-asserted when reset (active low) is asserted.
// The read address is also latched when S_AXI_ARVALID is
// asserted. axi_araddr is reset to zero on reset assertion.
always @( posedge S_AXI_ACLK )
begin
if ( S_AXI_ARESETN == 1'b0 )
begin
axi_arready <= 1'b0;
axi_araddr <= 32'b0;
end
else
begin
if (~axi_arready && S_AXI_ARVALID)
begin
// indicates that the slave has acceped the valid read address
axi_arready <= 1'b1;
// Read address latching
axi_araddr <= S_AXI_ARADDR;
end
else
begin
axi_arready <= 1'b0;
end
end
end
// Implement axi_arvalid generation
// axi_rvalid is asserted for one S_AXI_ACLK clock cycle when both
// S_AXI_ARVALID and axi_arready are asserted. The slave registers
// data are available on the axi_rdata bus at this instance. The
// assertion of axi_rvalid marks the validity of read data on the
// bus and axi_rresp indicates the status of read transaction.axi_rvalid
// is deasserted on reset (active low). axi_rresp and axi_rdata are
// cleared to zero on reset (active low).
always @( posedge S_AXI_ACLK )
begin
if ( S_AXI_ARESETN == 1'b0 )
begin
axi_rvalid <= 0;
axi_rresp <= 0;
end
else
begin
if (axi_arready && S_AXI_ARVALID && ~axi_rvalid)
begin
// Valid read data is available at the read data bus
axi_rvalid <= 1'b1;
axi_rresp <= 2'b0; // 'OKAY' response
end
else if (axi_rvalid && S_AXI_RREADY)
begin
// Read data is accepted by the master
axi_rvalid <= 1'b0;
end
end
end
// Implement memory mapped register select and read logic generation
// Slave register read enable is asserted when valid address is available
// and the slave is ready to accept the read address.
assign slv_reg_rden = axi_arready & S_AXI_ARVALID & ~axi_rvalid;
always @(*)
begin
// Address decoding for reading registers
case ( axi_araddr[ADDR_LSB+OPT_MEM_ADDR_BITS:ADDR_LSB] )
3'h0 : reg_data_out <= slv_reg0;
3'h1 : reg_data_out <= slv_reg1;
3'h2 : reg_data_out <= slv_reg2;
3'h3 : reg_data_out <= slv_reg3;
3'h4 : reg_data_out <= slv_reg4;
3'h5 : reg_data_out <= slv_reg5;
3'h6 : reg_data_out <= slv_reg6;
3'h7 : reg_data_out <= slv_reg7;
default : reg_data_out <= 0;
endcase
end
// Output register or memory read data
always @( posedge S_AXI_ACLK )
begin
if ( S_AXI_ARESETN == 1'b0 )
begin
axi_rdata <= 0;
end
else
begin
// When there is a valid read address (S_AXI_ARVALID) with
// acceptance of read address by the slave (axi_arready),
// output the read dada
if (slv_reg_rden)
begin
axi_rdata <= reg_data_out; // register read data
end
end
end
// Add user logic here
assign ddr3_address_w_en=slv_reg0;
assign ddr3_address_i_en=slv_reg1;
assign ddr3_address_a_s=slv_reg2;
assign ddr3_address_a_e=slv_reg3;
assign ddr3_address_a_i=slv_reg4;
assign ddr3_address_b_s=slv_reg5;
assign ddr3_address_b_e=slv_reg6;
assign ddr3_address_b_i=slv_reg7;
// User logic ends
endmodule
`timescale 1 ns / 1 ps
module all_slave #
(
// Users to add parameters here
// User parameters ends
// Do not modify the parameters beyond this line
// Width of S_AXI data bus
parameter integer C_S_AXI_DATA_WIDTH = 32,
// Width of S_AXI address bus
parameter integer C_S_AXI_ADDR_WIDTH = 5
)
(
// Users to add ports here
//output for irq
input irq_a,
input irq_b,
//port for debug
input [7:0] state_port,
input [15:0] full_port,
input [11:0] memory_w_address_port,
input [11:0] memory_r_address_port,
// User ports ends
// Do not modify the ports beyond this line
// Global Clock Signal
input wire S_AXI_ACLK,
// Global Reset Signal. This Signal is Active LOW
input wire S_AXI_ARESETN,
// Write address (issued by master, acceped by Slave)
input wire [C_S_AXI_ADDR_WIDTH-1 : 0] S_AXI_AWADDR,
// Write channel Protection type. This signal indicates the
// privilege and security level of the transaction, and whether
// the transaction is a data access or an instruction access.
input wire [2 : 0] S_AXI_AWPROT,
// Write address valid. This signal indicates that the master signaling
// valid write address and control information.
input wire S_AXI_AWVALID,
// Write address ready. This signal indicates that the slave is ready
// to accept an address and associated control signals.
output wire S_AXI_AWREADY,
// Write data (issued by master, acceped by Slave)
input wire [C_S_AXI_DATA_WIDTH-1 : 0] S_AXI_WDATA,
// Write strobes. This signal indicates which byte lanes hold
// valid data. There is one write strobe bit for each eight
// bits of the write data bus.
input wire [(C_S_AXI_DATA_WIDTH/8)-1 : 0] S_AXI_WSTRB,
// Write valid. This signal indicates that valid write
// data and strobes are available.
input wire S_AXI_WVALID,
// Write ready. This signal indicates that the slave
// can accept the write data.
output wire S_AXI_WREADY,
// Write response. This signal indicates the status
// of the write transaction.
output wire [1 : 0] S_AXI_BRESP,
// Write response valid. This signal indicates that the channel
// is signaling a valid write response.
output wire S_AXI_BVALID,
// Response ready. This signal indicates that the master
// can accept a write response.
input wire S_AXI_BREADY,
// Read address (issued by master, acceped by Slave)
input wire [C_S_AXI_ADDR_WIDTH-1 : 0] S_AXI_ARADDR,
// Protection type. This signal indicates the privilege
// and security level of the transaction, and whether the
// transaction is a data access or an instruction access.
input wire [2 : 0] S_AXI_ARPROT,
// Read address valid. This signal indicates that the channel
// is signaling valid read address and control information.
input wire S_AXI_ARVALID,
// Read address ready. This signal indicates that the slave is
// ready to accept an address and associated control signals.
output wire S_AXI_ARREADY,
// Read data (issued by slave)
output wire [C_S_AXI_DATA_WIDTH-1 : 0] S_AXI_RDATA,
// Read response. This signal indicates the status of the
// read transfer.
output wire [1 : 0] S_AXI_RRESP,
// Read valid. This signal indicates that the channel is
// signaling the required read data.
output wire S_AXI_RVALID,
// Read ready. This signal indicates that the master can
// accept the read data and response information.
input wire S_AXI_RREADY
);
// AXI4LITE signals
reg [C_S_AXI_ADDR_WIDTH-1 : 0] axi_awaddr;
reg axi_awready;
reg axi_wready;
reg [1 : 0] axi_bresp;
reg axi_bvalid;
reg [C_S_AXI_ADDR_WIDTH-1 : 0] axi_araddr;
reg axi_arready;
reg [C_S_AXI_DATA_WIDTH-1 : 0] axi_rdata;
reg [1 : 0] axi_rresp;
reg axi_rvalid;
// Example-specific design signals
// local parameter for addressing 32 bit / 64 bit C_S_AXI_DATA_WIDTH
// ADDR_LSB is used for addressing 32/64 bit registers/memories
// ADDR_LSB = 2 for 32 bits (n downto 2)
// ADDR_LSB = 3 for 64 bits (n downto 3)
localparam integer ADDR_LSB = (C_S_AXI_DATA_WIDTH/32) + 1;
localparam integer OPT_MEM_ADDR_BITS = 2;
//----------------------------------------------
//-- Signals for user logic register space example
//------------------------------------------------
//-- Number of Slave Registers 6
reg [C_S_AXI_DATA_WIDTH-1:0] slv_reg0;
reg [C_S_AXI_DATA_WIDTH-1:0] slv_reg1;
reg [C_S_AXI_DATA_WIDTH-1:0] slv_reg2;
reg [C_S_AXI_DATA_WIDTH-1:0] slv_reg3;
reg [C_S_AXI_DATA_WIDTH-1:0] slv_reg4;
reg [C_S_AXI_DATA_WIDTH-1:0] slv_reg5;
wire slv_reg_rden;
wire slv_reg_wren;
reg [C_S_AXI_DATA_WIDTH-1:0] reg_data_out;
integer byte_index;
reg aw_en;
// I/O Connections assignments
assign S_AXI_AWREADY = axi_awready;
assign S_AXI_WREADY = axi_wready;
assign S_AXI_BRESP = axi_bresp;
assign S_AXI_BVALID = axi_bvalid;
assign S_AXI_ARREADY = axi_arready;
assign S_AXI_RDATA = axi_rdata;
assign S_AXI_RRESP = axi_rresp;
assign S_AXI_RVALID = axi_rvalid;
// Implement axi_awready generation
// axi_awready is asserted for one S_AXI_ACLK clock cycle when both
// S_AXI_AWVALID and S_AXI_WVALID are asserted. axi_awready is
// de-asserted when reset is low.
always @( posedge S_AXI_ACLK )
begin
if ( S_AXI_ARESETN == 1'b0 )
begin
axi_awready <= 1'b0;
aw_en <= 1'b1;
end
else
begin
if (~axi_awready && S_AXI_AWVALID && S_AXI_WVALID && aw_en)
begin
// slave is ready to accept write address when
// there is a valid write address and write data
// on the write address and data bus. This design
// expects no outstanding transactions.
axi_awready <= 1'b1;
aw_en <= 1'b0;
end
else if (S_AXI_BREADY && axi_bvalid)
begin
aw_en <= 1'b1;
axi_awready <= 1'b0;
end
else
begin
axi_awready <= 1'b0;
end
end
end
// Implement axi_awaddr latching
// This process is used to latch the address when both
// S_AXI_AWVALID and S_AXI_WVALID are valid.
always @( posedge S_AXI_ACLK )
begin
if ( S_AXI_ARESETN == 1'b0 )
begin
axi_awaddr <= 0;
end
else
begin
if (~axi_awready && S_AXI_AWVALID && S_AXI_WVALID && aw_en)
begin
// Write Address latching
axi_awaddr <= S_AXI_AWADDR;
end
end
end
// Implement axi_wready generation
// axi_wready is asserted for one S_AXI_ACLK clock cycle when both
// S_AXI_AWVALID and S_AXI_WVALID are asserted. axi_wready is
// de-asserted when reset is low.
always @( posedge S_AXI_ACLK )
begin
if ( S_AXI_ARESETN == 1'b0 )
begin
axi_wready <= 1'b0;
end
else
begin
if (~axi_wready && S_AXI_WVALID && S_AXI_AWVALID && aw_en )
begin
// slave is ready to accept write data when
// there is a valid write address and write data
// on the write address and data bus. This design
// expects no outstanding transactions.
axi_wready <= 1'b1;
end
else
begin
axi_wready <= 1'b0;
end
end
end
// Implement memory mapped register select and write logic generation
// The write data is accepted and written to memory mapped registers when
// axi_awready, S_AXI_WVALID, axi_wready and S_AXI_WVALID are asserted. Write strobes are used to
// select byte enables of slave registers while writing.
// These registers are cleared when reset (active low) is applied.
// Slave register write enable is asserted when valid address and data are available
// and the slave is ready to accept the write address and write data.
assign slv_reg_wren = axi_wready && S_AXI_WVALID && axi_awready && S_AXI_AWVALID;
always @( posedge S_AXI_ACLK )
begin
if ( S_AXI_ARESETN == 1'b0 )
begin
slv_reg0 <= 0;
slv_reg1 <= 0;
slv_reg2 <= 0;
slv_reg3 <= 0;
slv_reg4 <= 0;
slv_reg5 <= 0;
end
else begin
if (slv_reg_wren)
begin
case ( axi_awaddr[ADDR_LSB+OPT_MEM_ADDR_BITS:ADDR_LSB] )
3'h0:
for ( byte_index = 0; byte_index <= (C_S_AXI_DATA_WIDTH/8)-1; byte_index = byte_index+1 )
if ( S_AXI_WSTRB[byte_index] == 1 ) begin
// Respective byte enables are asserted as per write strobes
// Slave register 0
slv_reg0[(byte_index*8) +: 8] <= S_AXI_WDATA[(byte_index*8) +: 8];
end
3'h1:
for ( byte_index = 0; byte_index <= (C_S_AXI_DATA_WIDTH/8)-1; byte_index = byte_index+1 )
if ( S_AXI_WSTRB[byte_index] == 1 ) begin
// Respective byte enables are asserted as per write strobes
// Slave register 1
slv_reg1[(byte_index*8) +: 8] <= S_AXI_WDATA[(byte_index*8) +: 8];
end
3'h2:
for ( byte_index = 0; byte_index <= (C_S_AXI_DATA_WIDTH/8)-1; byte_index = byte_index+1 )
if ( S_AXI_WSTRB[byte_index] == 1 ) begin
// Respective byte enables are asserted as per write strobes
// Slave register 2
slv_reg2[(byte_index*8) +: 8] <= S_AXI_WDATA[(byte_index*8) +: 8];
end
3'h3:
for ( byte_index = 0; byte_index <= (C_S_AXI_DATA_WIDTH/8)-1; byte_index = byte_index+1 )
if ( S_AXI_WSTRB[byte_index] == 1 ) begin
// Respective byte enables are asserted as per write strobes
// Slave register 3
slv_reg3[(byte_index*8) +: 8] <= S_AXI_WDATA[(byte_index*8) +: 8];
end
3'h4:
for ( byte_index = 0; byte_index <= (C_S_AXI_DATA_WIDTH/8)-1; byte_index = byte_index+1 )
if ( S_AXI_WSTRB[byte_index] == 1 ) begin
// Respective byte enables are asserted as per write strobes
// Slave register 4
slv_reg4[(byte_index*8) +: 8] <= S_AXI_WDATA[(byte_index*8) +: 8];
end
3'h5:
for ( byte_index = 0; byte_index <= (C_S_AXI_DATA_WIDTH/8)-1; byte_index = byte_index+1 )
if ( S_AXI_WSTRB[byte_index] == 1 ) begin
// Respective byte enables are asserted as per write strobes
// Slave register 5
slv_reg5[(byte_index*8) +: 8] <= S_AXI_WDATA[(byte_index*8) +: 8];
end
default : begin
slv_reg0 <= slv_reg0;
slv_reg1 <= slv_reg1;
slv_reg2 <= slv_reg2;
slv_reg3 <= slv_reg3;
slv_reg4 <= slv_reg4;
slv_reg5 <= slv_reg5;
end
endcase
end
end
end
// Implement write response logic generation
// The write response and response valid signals are asserted by the slave
// when axi_wready, S_AXI_WVALID, axi_wready and S_AXI_WVALID are asserted.
// This marks the acceptance of address and indicates the status of
// write transaction.
always @( posedge S_AXI_ACLK )
begin
if ( S_AXI_ARESETN == 1'b0 )
begin
axi_bvalid <= 0;
axi_bresp <= 2'b0;
end
else
begin
if (axi_awready && S_AXI_AWVALID && ~axi_bvalid && axi_wready && S_AXI_WVALID)
begin
// indicates a valid write response is available
axi_bvalid <= 1'b1;
axi_bresp <= 2'b0; // 'OKAY' response
end // work error responses in future
else
begin
if (S_AXI_BREADY && axi_bvalid)
//check if bready is asserted while bvalid is high)
//(there is a possibility that bready is always asserted high)
begin
axi_bvalid <= 1'b0;
end
end
end
end
// Implement axi_arready generation
// axi_arready is asserted for one S_AXI_ACLK clock cycle when
// S_AXI_ARVALID is asserted. axi_awready is
// de-asserted when reset (active low) is asserted.
// The read address is also latched when S_AXI_ARVALID is
// asserted. axi_araddr is reset to zero on reset assertion.
always @( posedge S_AXI_ACLK )
begin
if ( S_AXI_ARESETN == 1'b0 )
begin
axi_arready <= 1'b0;
axi_araddr <= 32'b0;
end
else
begin
if (~axi_arready && S_AXI_ARVALID)
begin
// indicates that the slave has acceped the valid read address
axi_arready <= 1'b1;
// Read address latching
axi_araddr <= S_AXI_ARADDR;
end
else
begin
axi_arready <= 1'b0;
end
end
end
// Implement axi_arvalid generation
// axi_rvalid is asserted for one S_AXI_ACLK clock cycle when both
// S_AXI_ARVALID and axi_arready are asserted. The slave registers
// data are available on the axi_rdata bus at this instance. The
// assertion of axi_rvalid marks the validity of read data on the
// bus and axi_rresp indicates the status of read transaction.axi_rvalid
// is deasserted on reset (active low). axi_rresp and axi_rdata are
// cleared to zero on reset (active low).
always @( posedge S_AXI_ACLK )
begin
if ( S_AXI_ARESETN == 1'b0 )
begin
axi_rvalid <= 0;
axi_rresp <= 0;
end
else
begin
if (axi_arready && S_AXI_ARVALID && ~axi_rvalid)
begin
// Valid read data is available at the read data bus
axi_rvalid <= 1'b1;
axi_rresp <= 2'b0; // 'OKAY' response
end
else if (axi_rvalid && S_AXI_RREADY)
begin
// Read data is accepted by the master
axi_rvalid <= 1'b0;
end
end
end
// Implement memory mapped register select and read logic generation
// Slave register read enable is asserted when valid address is available
// and the slave is ready to accept the read address.
assign slv_reg_rden = axi_arready & S_AXI_ARVALID & ~axi_rvalid;
always @(*)
begin
// Address decoding for reading registers
case ( axi_araddr[ADDR_LSB+OPT_MEM_ADDR_BITS:ADDR_LSB] )
// input irq_a,
// input irq_b,
// //port for debug
// input [7:0] state_port,
// input [15:0] full_port,
// input [11:0] memory_w_address_port,
// input [11:0] memory_r_address_port,
3'h0 : reg_data_out <= irq_a;
3'h1 : reg_data_out <= irq_b;
3'h2 : reg_data_out <= state_port;
3'h3 : reg_data_out <= full_port;
3'h4 : reg_data_out <= memory_w_address_port;
3'h5 : reg_data_out <= memory_r_address_port;
default : reg_data_out <= 0;
endcase
end
// Output register or memory read data
always @( posedge S_AXI_ACLK )
begin
if ( S_AXI_ARESETN == 1'b0 )
begin
axi_rdata <= 0;
end
else
begin
// When there is a valid read address (S_AXI_ARVALID) with
// acceptance of read address by the slave (axi_arready),
// output the read dada
if (slv_reg_rden)
begin
axi_rdata <= reg_data_out; // register read data
end
end
end
// Add user logic here
// User logic ends
endmodule
`timescale 1ns / 1ps
//
// Company:
// Engineer:
//
// Create Date: 2021/04/21 17:21:49
// Design Name:
// Module Name: all_source
// Project Name:
// Target Devices:
// Tool Versions:
// Description:
//
// Dependencies:
//
// Revision:
// Revision 0.01 - File Created
// Additional Comments:
//
//
module all_source(
input aclk,
input aresetn,
output reg [31:0] data,
output data_enb
);
assign data_enb=(counter==8'd1);
reg [7:0] counter;
always @(posedge aclk)
begin
counter<=(counter<8'd10)?(counter+1'b1):8'd0;
end
always @(posedge aclk)
begin
if(counter==8'd1)
begin
data<=data+1'b1;
end
end
endmodule
下面是c语言的控制端口，一个是while等待，一个是irq中断
#include <stdio.h>
#include "platform.h"
#include "xil_printf.h"
#include <xil_io.h>
#include "xparameters.h"
int main()
{
init_platform();
print("Hello World\n\r");
Xil_Out32(XPAR_ALL_MASTER_0_BASEADDR+2*4,0x1000000);
Xil_Out32(XPAR_ALL_MASTER_0_BASEADDR+3*4,0x1800000-1024);
Xil_Out32(XPAR_ALL_MASTER_0_BASEADDR+4*4,0x1100000);
Xil_Out32(XPAR_ALL_MASTER_0_BASEADDR+5*4,0x1800000);
Xil_Out32(XPAR_ALL_MASTER_0_BASEADDR+6*4,0x2000000-1024);
Xil_Out32(XPAR_ALL_MASTER_0_BASEADDR+7*4,0x1900000);
Xil_Out32(XPAR_ALL_MASTER_0_BASEADDR+1*4,1);
Xil_Out32(XPAR_ALL_MASTER_0_BASEADDR+0*4,1);
while(1)
{
int a= (Xil_In32(XPAR_ALL_SLAVE_0_BASEADDR+0*4));
int b= (Xil_In32(XPAR_ALL_SLAVE_0_BASEADDR+1*4));
if(a||b)
{
Xil_Out32(XPAR_ALL_MASTER_0_BASEADDR+1*4,0);
Xil_Out32(XPAR_ALL_MASTER_0_BASEADDR+1*4,1);
printf("%d %d\n",a,b);
}
}
cleanup_platform();
return 0;
}
#include <xil_io.h>
#include "xparameters.h"
#include <stdio.h>
#include "xscugic.h"
int irq_flag=0;
void irq61_handler(void *CallbackRef)
{
Xil_Out32(XPAR_ALL_MASTER_0_BASEADDR+1*4,0);
Xil_Out32(XPAR_ALL_MASTER_0_BASEADDR+1*4,1);
irq_flag=61;
}
void irq62_handler(void *CallbackRef)
{
Xil_Out32(XPAR_ALL_MASTER_0_BASEADDR+1*4,0);
Xil_Out32(XPAR_ALL_MASTER_0_BASEADDR+1*4,1);
irq_flag=62;
}
int irq_setup(u16 intrid, void *intr_handler)
{
int Result;
XScuGic *intcinstance; /* The Instance of the Interrupt Controller Driver */
XScuGic_Config *intcconfig;
/*
* Initialize the interrupt controller driver so that it is ready to
* use.
*/
intcconfig = XScuGic_LookupConfig(XPAR_SCUGIC_SINGLE_DEVICE_ID);
if (NULL == intcconfig)
{
return XST_FAILURE;
}
Result = XScuGic_CfgInitialize(intcinstance, intcconfig, intcconfig->CpuBaseAddress);
if (Result != XST_SUCCESS)
{
return XST_FAILURE;
}
XScuGic_SetPriorityTriggerType(intcinstance, intrid,0xA0, 0x3);
/* Enable the interrupt for the GPIO device.*/
XScuGic_Enable(intcinstance, intrid);
Result = XScuGic_Connect(intcinstance, intrid,(Xil_ExceptionHandler)intr_handler, (void*)1);
if (Result != XST_SUCCESS)
{
return Result;
}
/*
* Initialize the exception table and register the interrupt
* controller handler with the exception table
*/
Xil_ExceptionInit();
Xil_ExceptionRegisterHandler(XIL_EXCEPTION_ID_INT, (Xil_ExceptionHandler)XScuGic_InterruptHandler, intcinstance);
/* Enable non-critical exceptions */
Xil_ExceptionEnable();
return XST_SUCCESS;
}
#include <stdio.h>
#include "platform.h"
#include "xil_printf.h"
int main()
{
init_platform();
print("Hello World\n\r");
irq_setup(61,irq61_handler);
irq_setup(62,irq62_handler);
Xil_Out32(XPAR_ALL_MASTER_0_BASEADDR+2*4,0x1000000);
Xil_Out32(XPAR_ALL_MASTER_0_BASEADDR+3*4,0x1800000-1024);
Xil_Out32(XPAR_ALL_MASTER_0_BASEADDR+4*4,0x1100000);
Xil_Out32(XPAR_ALL_MASTER_0_BASEADDR+5*4,0x1800000);
Xil_Out32(XPAR_ALL_MASTER_0_BASEADDR+6*4,0x2000000-1024);
Xil_Out32(XPAR_ALL_MASTER_0_BASEADDR+7*4,0x1900000);
Xil_Out32(XPAR_ALL_MASTER_0_BASEADDR+1*4,1);
Xil_Out32(XPAR_ALL_MASTER_0_BASEADDR+0*4,1);
while(1)
{
if(irq_flag==61)
{
irq_flag=0;
print("a");
}
if(irq_flag==62)
{
irq_flag=0;
print("b");
}
}
cleanup_platform();
return 0;
}
标签：dma,wire,stream,ps,output,address,input,AXI,reg 来源： https://blog.csdn.net/weixin_38888158/article/details/119915092