Subversion Repositories pcie_ds_dma

 
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//-----------------------------------------------------------------------------
// Project    : V5-Block Plus for PCI Express
// File       : pcie_soft_int.v
//--------------------------------------------------------------------------------
//--------------------------------------------------------------------------------
//--
//-- Description: PCIe Interrupt Module Wrapper for Softcore CMM32 Interrupt
//--    module
//--
//--
//--
//------------------------------------------------------------------------------
 
`timescale 1ns/1ns
 
`ifndef Tcq
   `define Tcq 1
`endif
 
module pcie_soft_cf_int
(
       // Clock and reset
 
       input wire         clk,
       input wire         rst_n,
 
 
 
 
       input  wire        cs_is_intr,
       input  wire        grant,
       input  wire [31:0] cfg_msguaddr,
 
       // PCIe Block Interrupt Ports
 
       input  wire        msi_enable,
       output      [3:0]  msi_request,
       output wire        legacy_int_request,
 
       // LocalLink Interrupt Ports
 
       input  wire        cfg_interrupt_n,
       output wire        cfg_interrupt_rdy_n,
 
 
       // NEWINTERRUPT signals
       input wire          msi_8bit_en,
 
       input wire         cfg_interrupt_assert_n,
       input wire   [7:0] cfg_interrupt_di,
       output       [2:0] cfg_interrupt_mmenable,
       output       [7:0] cfg_interrupt_do,
       output             cfg_interrupt_msienable,
       input wire [31:0]  msi_laddr,
       input wire [31:0]  msi_haddr,
 
       input wire [15:0]  cfg_command,
       input wire [15:0]  cfg_msgctrl,
       input wire [15:0]  cfg_msgdata,
 
       // To Arb
       output wire        signaledint,
       output wire        intr_req_valid,
       output wire  [1:0] intr_req_type,
       output wire  [7:0] intr_vector
 
);
 
 
wire intr_rdy;
 
 
 
assign cfg_interrupt_rdy_n = ~intr_rdy;
 
assign cfg_interrupt_msienable = cfg_msgctrl[0]; // adr 0x48
assign legacy_int_request = 0;             // tied low to disable in block
                                           // legacy will be generated manually
assign msi_request = 4'd0;                 // tied low per ug197
 
assign cfg_interrupt_mmenable = cfg_msgctrl[6:4]; // MSI Cap Structure
assign cfg_interrupt_do = cfg_msgdata[7:0];       // MSI Message Data
 
 
// Interrupt controller from softcore
  cmm_intr u_cmm_intr (
      .clk                           (clk)
     ,.rst                           (~rst_n)
     ,.signaledint                   (signaledint)            // O
     ,.intr_req_valid                (intr_req_valid)         // O 
     ,.intr_req_type                 (intr_req_type)          // O [1:0]
     ,.intr_rdy                      (intr_rdy)    // O
     ,.cfg_interrupt_n               (cfg_interrupt_n)        // I [7:0]
 
     ,.cfg_interrupt_assert_n        (cfg_interrupt_assert_n) // I
     ,.cfg_interrupt_di              (cfg_interrupt_di)       // I [7:0]
     ,.cfg_interrupt_mmenable        (cfg_interrupt_mmenable) // I [2:0]
     //,.cfg_interrupt_mmenable        (3'b0) // I [2:0]
     ,.msi_data                      (cfg_msgdata)               // I[15:0]
     ,.intr_vector                   (intr_vector)            // O [7:0]
     ,.cfg                           ( {556'd0, msi_8bit_en ,467'd0} )            // I[1023:0] 
 
     ,.command                       (cfg_command)            // I [15:0]
     ,.msi_control                   (cfg_msgctrl)          // I [15:0]
     ,.msi_laddr                     (msi_laddr)              // I [31:0]
     ,.msi_haddr                     (msi_haddr)              // I [31:0]
     //,.intr_grant                    (grant)                  // I 
     ,.intr_grant                    (grant & cs_is_intr)                  // I 
        );
 
 
 
 
 
 
 
 
endmodule