本文主要是介绍Vivado使用系列：IP Integrator HDL，希望对大家解决编程问题提供一定的参考价值，需要的开发者们随着小编来一起学习吧！
测试平台Vivado 2017.2
在Vivado的Block设计里，全IP化逐渐形成了一种新型的设计方案，受Vivado内的IP可配置的GUI界面影响，使用IP要比RTL代码更有良好的用户体验；然而，在Block设计里，并不是只有IP这一种可添加并可配置，RTL也可实现上述功能，只需要在Block内右键Add Module..，会弹出下面界面：
选择我之前写的模块add，点击ok，
这样就添加了一个add的RTL Module到Block Design内了。默认Vivado左边是输入端口，右边是输出端口。
上面是一个很简单的操作，接下来进入正题，讲解如何利用IP Integrator HDL语言使我们的RTL Module在Block内更像一个IP，IP Integrator HDL语言支持Verilog、VHDL，这里只用Verilog进行演示。
先看一下Xilinx提供的IP Integrator HDL的Language Templates:
分析一下结构，得出以下几点结论：
1.每个端口定义都是以(*起始，并以*)结束，并写在端口定义之前；
2.每个端口定义结构满足 X_INTERFACE_INFO = "{存在的接口类型} {接口的名字} 接口内的端口（必须与接口类型定义的端口一致)"
3.除了端口定义，还有Parameter定义，以X_INTERFACE_PARAMETER = "开始，内部采用键值对，即Param = value型结构；
下面是vivado内的原话：
//
// Verilog attributes are used to declare signal interfaces and set parameters on them.
// Due to the language, the attributes need to be placed before a port which is part of the interface.
// When adding one or more parameters for an interface, a single attribute with multiple
// key value pairs should be added to before of the ports that is mapped into the interface.
// Generally, the form of the attributes are:
// (* X_INTERFACE_INFO = "<interface vlnv> <interface_name> <logical_port_name>" *)
// (* X_INTERFACE_PARAMETER = "<parameter_name1> <parameter_value1>, <parameter_name2> <parameter_value2>" *)
// input <portname>;
接下来以一个AXI4_controller模块做例子演示一下。
首先按上述步骤添加一个AXI4_controller模块到Block内：
module axi4_controller_top #(parameter DATA_WIDTH = 'h100, parameter ADDR_WIDTH = 'h20, parameter LENGTH_WIDTH = 'h8,parameter ID_WIDTH = 'h2,parameter MASTER_ID = 'h1,parameter CLK_FREQ = 'hc8,parameter BASE_ADDR = 'h000000
)(
//
//Other Port
//input s_axil_aclk0,input s_axil_aresetn0,input [31:0] s_axil_awaddr0,input s_axil_awvalid0,output s_axil_awready0,input [31:0] s_axil_wdata0,input [3:0] s_axil_wstrb0,input s_axil_wvalid0,output s_axil_wready0,output [1:0] s_axil_bresp0,output s_axil_bvalid0,input s_axil_bready0,input [31:0] s_axil_araddr0,input s_axil_arvalid0,output s_axil_arready0,output [31:0] s_axil_rdata0,output [1:0] s_axil_rresp0,output s_axil_rvalid0,input s_axil_rready0,// AXI4_masteroutput m_axi_aclk0,output m_axi_aresetn0,output [AXI4_ID_WIDTH-1:0] m_axi_awid0,output [AXI4_ADDR_WIDTH-1:0] m_axi_awaddr0,output [AXI4_LENGTH_WIDTH-1:0] m_axi_awlen0,output [2:0] m_axi_awsize0,output [1:0] m_axi_awburst0,output [3:0] m_axi_awcache0,output [2:0] m_axi_awprot0,output m_axi_awvalid0,input m_axi_awready0,output [AXI4_DATA_WIDTH-1:0] m_axi_wdata0,output [AXI4_DATA_WIDTH/8-1:0] m_axi_wstrb0,output m_axi_wlast0,output m_axi_wvalid0,input m_axi_wready0,input [AXI4_ID_WIDTH-1:0] m_axi_bid0,input [1:0] m_axi_bresp0,input m_axi_bvalid0,output m_axi_bready0,output [AXI4_ID_WIDTH-1:0] m_axi_arid0,output [AXI4_ADDR_WIDTH-1:0] m_axi_araddr0,output [AXI4_LENGTH_WIDTH-1:0] m_axi_arlen0,output [2:0] m_axi_arsize0,output [1:0] m_axi_arburst0,output [3:0] m_axi_arcache0,output [2:0] m_axi_arprot0,output m_axi_arvalid0,input m_axi_arready0,input [AXI4_ID_WIDTH-1:0] m_axi_rid0,input [AXI4_DATA_WIDTH-1:0] m_axi_rdata0,input [1:0] m_axi_rresp0,input m_axi_rlast0,input m_axi_rvalid0,output m_axi_rready0
);endmodule
看到了Vivado有两条axi总线，一条Master一条Slave，我们现在要做的就是用IP Integretor HDL语言强制将两条AXI总线指定出来，并让它们以总线形式显示。
我添加好的axi_dma_controller的代码：
module axi4_controller_top #(parameter DATA_WIDTH = 'h100,parameter ADDR_WIDTH = 'h20,parameter LENGTH_WIDTH = 'h8,parameter ID_WIDTH = 'h2,parameter MASTER_ID = 'h1,parameter CLK_FREQ = 'hc8,parameter ADDR = 'h109000
)(//Other port// AXI4Lite_slave(* X_INTERFACE_INFO = "xilinx.com:interface:aximm:1.0 S_AXI_Lite AWADDR" *)input [31:0] s_axil_awaddr0, // Write address (optional)(* X_INTERFACE_INFO = "xilinx.com:interface:aximm:1.0 S_AXI_Lite AWVALID" *)input s_axil_awvalid0, // Write address valid (optional)(* X_INTERFACE_INFO = "xilinx.com:interface:aximm:1.0 S_AXI_Lite AWREADY" *)output s_axil_awready0, // Write address ready (optional)(* X_INTERFACE_INFO = "xilinx.com:interface:aximm:1.0 S_AXI_Lite WDATA" *)input [31:0] s_axil_wdata0, // Write data (optional)(* X_INTERFACE_INFO = "xilinx.com:interface:aximm:1.0 S_AXI_Lite WSTRB" *)input [3:0] s_axil_wstrb0, // Write strobes (optional)(* X_INTERFACE_INFO = "xilinx.com:interface:aximm:1.0 S_AXI_Lite WVALID" *)input s_axil_wvalid0, // Write valid (optional)(* X_INTERFACE_INFO = "xilinx.com:interface:aximm:1.0 S_AXI_Lite WREADY" *)output s_axil_wready0, // Write ready (optional)(* X_INTERFACE_INFO = "xilinx.com:interface:aximm:1.0 S_AXI_Lite BRESP" *)output [1:0] s_axil_bresp0, // Write response (optional)(* X_INTERFACE_INFO = "xilinx.com:interface:aximm:1.0 S_AXI_Lite BVALID" *)output s_axil_bvalid0, // Write response valid (optional)(* X_INTERFACE_INFO = "xilinx.com:interface:aximm:1.0 S_AXI_Lite BREADY" *)input s_axil_bready0, // Write response ready (optional)(* X_INTERFACE_INFO = "xilinx.com:interface:aximm:1.0 S_AXI_Lite ARADDR" *)input [31:0] s_axil_araddr0, // Read address (optional)(* X_INTERFACE_INFO = "xilinx.com:interface:aximm:1.0 S_AXI_Lite ARVALID" *)input s_axil_arvalid0, // Read address valid (optional)(* X_INTERFACE_INFO = "xilinx.com:interface:aximm:1.0 S_AXI_Lite ARREADY" *)output s_axil_arready0, // Read address ready (optional)(* X_INTERFACE_INFO = "xilinx.com:interface:aximm:1.0 S_AXI_Lite RDATA" *)output [31:0] s_axil_rdata0, // Read data (optional)(* X_INTERFACE_INFO = "xilinx.com:interface:aximm:1.0 S_AXI_Lite RRESP" *)output [1:0] s_axil_rresp0, // Read response (optional)(* X_INTERFACE_INFO = "xilinx.com:interface:aximm:1.0 S_AXI_Lite RVALID" *)output s_axil_rvalid0, // Read valid (optional)(* X_INTERFACE_INFO = "xilinx.com:interface:aximm:1.0 S_AXI_Lite RREADY" *)input s_axil_rready0, // Read ready (optional)(* X_INTERFACE_PARAMETER = "ASSOCIATED_BUSIF S_AXI_Lite, ASSOCIATED_RESET s_axil_aresetn0, FREQ_HZ 100000000" *)(* X_INTERFACE_INFO = "xilinx.com:signal:clock:1.0 s_axil_aclk0 CLK" *)input s_axil_aclk0,(* X_INTERFACE_PARAMETER = "POLARITY ACTIVE_LOW" *)(* X_INTERFACE_INFO = "xilinx.com:signal:reset:1.0 s_axil_aresetn0 RST" *) output s_axi_aresetn0,// AXI4_masteroutput [AXI4_ID_WIDTH-1:0] m_axi_awid0,(* X_INTERFACE_INFO = "xilinx.com:interface:aximm:1.0 M_AXI AWADDR" *)output [AXI4_ADDR_WIDTH-1:0] m_axi_awaddr0,(* X_INTERFACE_INFO = "xilinx.com:interface:aximm:1.0 M_AXI AWLEN" *)output [AXI4_LENGTH_WIDTH-1:0] m_axi_awlen0,(* X_INTERFACE_INFO = "xilinx.com:interface:aximm:1.0 M_AXI AWSIZE" *)output [2:0] m_axi_awsize0,(* X_INTERFACE_INFO = "xilinx.com:interface:aximm:1.0 M_AXI AWBURST" *)output [1:0] m_axi_awburst0,(* X_INTERFACE_INFO = "xilinx.com:interface:aximm:1.0 M_AXI AWCACHE" *)output [3:0] m_axi_awcache0,(* X_INTERFACE_INFO = "xilinx.com:interface:aximm:1.0 M_AXI AWPROT" *)output [2:0] m_axi_awprot0,(* X_INTERFACE_INFO = "xilinx.com:interface:aximm:1.0 M_AXI AWVALID" *)input m_axil_awvalid0, // Write address valid (optional)(* X_INTERFACE_INFO = "xilinx.com:interface:aximm:1.0 M_AXI AWREADY" *)output m_axil_awready0, // Write address ready (optional)(* X_INTERFACE_INFO = "xilinx.com:interface:aximm:1.0 M_AXI WDATA" *)output [AXI4_DATA_WIDTH-1:0] m_axi_wdata0,(* X_INTERFACE_INFO = "xilinx.com:interface:aximm:1.0 M_AXI WSTRB" *)output [AXI4_DATA_WIDTH/8-1:0] m_axi_wstrb0,(* X_INTERFACE_INFO = "xilinx.com:interface:aximm:1.0 M_AXI WLAST" *)output m_axi_wlast0,(* X_INTERFACE_INFO = "xilinx.com:interface:aximm:1.0 M_AXI WVALID" *)input m_axil_wvalid0, // Write valid (optional)(* X_INTERFACE_INFO = "xilinx.com:interface:aximm:1.0 M_AXI WREADY" *)output m_axil_wready0, // Write ready (optional)(* X_INTERFACE_INFO = "xilinx.com:interface:aximm:1.0 M_AXI BID" *)input [AXI4_ID_WIDTH-1:0] m_axi_bid0,(* X_INTERFACE_INFO = "xilinx.com:interface:aximm:1.0 M_AXI BRESP" *)output [1:0] m_axil_bresp0, // Write response (optional)(* X_INTERFACE_INFO = "xilinx.com:interface:aximm:1.0 M_AXI BVALID" *)output m_axil_bvalid0, // Write response valid (optional)(* X_INTERFACE_INFO = "xilinx.com:interface:aximm:1.0 M_AXI BREADY" *)input m_axil_bready0, // Write response ready (optional)(* X_INTERFACE_INFO = "xilinx.com:interface:aximm:1.0 M_AXI ARID" *)output [AXI4_ID_WIDTH-1:0] m_axi_arid0,(* X_INTERFACE_INFO = "xilinx.com:interface:aximm:1.0 M_AXI ARADDR" *)output [AXI4_ADDR_WIDTH-1:0] m_axi_araddr0,(* X_INTERFACE_INFO = "xilinx.com:interface:aximm:1.0 M_AXI ARLEN" *)output [AXI4_LENGTH_WIDTH-1:0] m_axi_arlen0,(* X_INTERFACE_INFO = "xilinx.com:interface:aximm:1.0 M_AXI ARSIZE" *)output [2:0] m_axi_arsize0,(* X_INTERFACE_INFO = "xilinx.com:interface:aximm:1.0 M_AXI ARBURST" *)output [1:0] m_axi_arburst0,(* X_INTERFACE_INFO = "xilinx.com:interface:aximm:1.0 M_AXI ARCACHE" *)output [3:0] m_axi_arcache0,(* X_INTERFACE_INFO = "xilinx.com:interface:aximm:1.0 M_AXI ARPROT" *)output [2:0] m_axi_arprot0,(* X_INTERFACE_INFO = "xilinx.com:interface:aximm:1.0 M_AXI ARVALID" *)input m_axil_arvalid0, // Read address valid (optional)(* X_INTERFACE_INFO = "xilinx.com:interface:aximm:1.0 M_AXI ARREADY" *)output m_axil_arready0, // Read address ready (optional)(* X_INTERFACE_INFO = "xilinx.com:interface:aximm:1.0 M_AXI RID" *)input [AXI4_ID_WIDTH-1:0] m_axi_rid0,(* X_INTERFACE_INFO = "xilinx.com:interface:aximm:1.0 M_AXI RDATA" *)input [AXI4_DATA_WIDTH-1:0] m_axi_rdata0,(* X_INTERFACE_INFO = "xilinx.com:interface:aximm:1.0 M_AXI RRESP" *)output [1:0] m_axil_rresp0, // Read response (optional)(* X_INTERFACE_INFO = "xilinx.com:interface:aximm:1.0 M_AXI RLAST" *)input m_axi_rlast0,(* X_INTERFACE_INFO = "xilinx.com:interface:aximm:1.0 M_AXI RVALID" *)output m_axil_rvalid0, // Read valid (optional)(* X_INTERFACE_INFO = "xilinx.com:interface:aximm:1.0 M_AXI RREADY" *)input m_axil_rready0, // Read ready (optional)(* X_INTERFACE_PARAMETER = "ASSOCIATED_BUSIF M_AXI, ASSOCIATED_RESET m_axi_aresetn0, FREQ_HZ 100000000" *)(* X_INTERFACE_INFO = "xilinx.com:signal:clock:1.0 m_axil_aclk0 CLK" *)output m_axi_aclk0,(* X_INTERFACE_PARAMETER = "POLARITY ACTIVE_LOW" *)(* X_INTERFACE_INFO = "xilinx.com:signal:reset:1.0 m_axil_aresetn0 RST" *)output m_axi_aresetn0
);endmodule
可以看到Slave AXI和Master AXI已经以总线图标显示，并能以总线接口进行连线，这是System Verilog才具有的功能，但是Vivado通过Block将其应用在Verilog和VHDL上了。
有的时候Vivado可以根据RTL Module自动推断出模块内的接口，这时候可以不用，但是自动推断的接口，经常会有莫名其妙的问题。如果系统内没有满足自己需要的接口，可以自定义接口，同样可以被IP Integrator HDL使用。
这篇关于Vivado使用系列：IP Integrator HDL的文章就介绍到这儿，希望我们推荐的文章对编程师们有所帮助！
