Initial commit of OpenSPARC T2 design and verification files.

[OpenSPARC-T2-DV] / design / sys / iop / dmu / rtl / dmu_mmu_csr_prfc.v

// ========== Copyright Header Begin ==========================================
// 
// OpenSPARC T2 Processor File: dmu_mmu_csr_prfc.v
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module dmu_mmu_csr_prfc 
	(
	clk,
	rst_l,
	prfc_w_ld,
	csrbus_wr_data,
	prfc_csrbus_read_data,
	prfc_sel1_hw_read,
	prfc_sel0_hw_read
	);

//====================================================================
//     Polarity declarations
//====================================================================
input  clk;  // Clock
input  rst_l;  // Reset signal
input  prfc_w_ld;  // SW load bus
input  [`FIRE_CSRBUS_DATA_WIDTH-1:0] csrbus_wr_data;  // SW write data
output [`FIRE_DLC_MMU_CSR_PRFC_WIDTH-1:0] prfc_csrbus_read_data;  // SW read
                                                                  // data
output [`FIRE_DLC_MMU_CSR_PRFC_SEL1_INT_SLC] prfc_sel1_hw_read;  // This signal
                                                                 // provides the
                                                                 // current
                                                                 // value of
                                                                 // prfc_sel1.
output [`FIRE_DLC_MMU_CSR_PRFC_SEL0_INT_SLC] prfc_sel0_hw_read;  // This signal
                                                                 // provides the
                                                                 // current
                                                                 // value of
                                                                 // prfc_sel0.

//====================================================================
//     Type declarations
//====================================================================
wire clk;  // Clock
wire rst_l;  // Reset signal
wire prfc_w_ld;  // SW load bus
wire [`FIRE_CSRBUS_DATA_WIDTH-1:0] csrbus_wr_data;  // SW write data
wire [`FIRE_DLC_MMU_CSR_PRFC_WIDTH-1:0] prfc_csrbus_read_data;  // SW read data
wire [`FIRE_DLC_MMU_CSR_PRFC_SEL1_INT_SLC] prfc_sel1_hw_read;  // This signal
                                                               // provides the
                                                               // current value
                                                               // of prfc_sel1.
wire [`FIRE_DLC_MMU_CSR_PRFC_SEL0_INT_SLC] prfc_sel0_hw_read;  // This signal
                                                               // provides the
                                                               // current value
                                                               // of prfc_sel0.

//====================================================================
//     Logic     
//====================================================================

// synopsys translate_off
// verilint 123 off
// verilint 498 off
reg omni_ld;
reg [`FIRE_DLC_MMU_CSR_PRFC_WIDTH-1:0] omni_data;

// vlint flag_unsynthesizable_initial off
initial
  begin
     omni_ld         = 1'b0;
     omni_data       = `FIRE_DLC_MMU_CSR_PRFC_WIDTH'b0;
  end// vlint flag_unsynthesizable_initial on

// verilint 123 on
// verilint 498 on
// synopsys translate_on

//----- Hardware Data Out Mux Assignments
assign prfc_sel1_hw_read=
           prfc_csrbus_read_data
               [`FIRE_DLC_MMU_CSR_PRFC_SEL1_SLC];
assign prfc_sel0_hw_read=
           prfc_csrbus_read_data
               [`FIRE_DLC_MMU_CSR_PRFC_SEL0_SLC];

//====================================================================
//     Instantiation of entries
//====================================================================

//----- Entry 0
dmu_mmu_csr_prfc_entry prfc_0
	(
	// synopsys translate_off
	  .omni_ld	(omni_ld),
	  .omni_data	(omni_data),
	// synopsys translate_on
	.clk	(clk),
	.rst_l	(rst_l),
	.w_ld	(prfc_w_ld),
	.csrbus_wr_data	(csrbus_wr_data),
	.prfc_csrbus_read_data	(prfc_csrbus_read_data)
	);

endmodule // dmu_mmu_csr_prfc