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Added tag and group for read response

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-Still not sure about this..
This commit is contained in:
Andreas Olofsson 2015-04-23 23:14:39 -04:00
parent 370034437f
commit 0ed6afeac9
1 changed files with 9 additions and 7 deletions
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16
elink/hdl/erx_disty.v
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@ -19,9 +19,10 @@ module erx_disty (/*AUTOARG*/
); );
parameter [11:0] C_READ_TAG_ADDR = 12'h810; parameter [11:0] C_READ_TAG_ADDR = 12'h810;
parameter AW = 32; parameter AW = 32;
parameter DW = 32; parameter DW = 32;
parameter PW = 104; parameter PW = 104;
parameter ID = 12'h800; //link id
// RX clock // RX clock
input clk; input clk;
@ -64,6 +65,7 @@ module erx_disty (/*AUTOARG*/
wire [31:0] emmu_srcaddr; wire [31:0] emmu_srcaddr;
wire [31:0] emmu_data; wire [31:0] emmu_data;
wire emmu_read; wire emmu_read;
wire readtag_match;
//regs //regs
reg rxrd_fifo_access; reg rxrd_fifo_access;
@ -104,7 +106,7 @@ module erx_disty (/*AUTOARG*/
end end
//Write and read response from emmu //Write and read response from emmu
assign readtag_match = (emmu_dstaddr[31:20] == ID) & (emmu_dstaddr[19:16]==`EGROUP_READTAG) ;
always @ (posedge clk or posedge reset) always @ (posedge clk or posedge reset)
if(reset) if(reset)
@ -115,8 +117,8 @@ module erx_disty (/*AUTOARG*/
else if(emmu_access) else if(emmu_access)
begin begin
rxwr_fifo_packet[PW-1:0] <= emmu_packet[PW-1:0]; rxwr_fifo_packet[PW-1:0] <= emmu_packet[PW-1:0];
rxrr_fifo_access <= emmu_write & (emmu_dstaddr[31:20] == C_READ_TAG_ADDR); rxrr_fifo_access <= emmu_write & readtag_match; //read response match
rxwr_fifo_access <= emmu_write & (emmu_dstaddr[31:20] != C_READ_TAG_ADDR); rxwr_fifo_access <= emmu_write & ~(emmu_dstaddr[31:20] == ID);//pass through
end end
else else
begin begin
@ -129,7 +131,7 @@ module erx_disty (/*AUTOARG*/
//wait signals //wait signals
assign rx_rd_wait = rxrd_fifo_wait; assign rx_rd_wait = rxrd_fifo_wait;
assign rx_wr_wait = rxwr_fifo_wait | rxrr_fifo_wait; assign rx_wr_wait = rxwr_fifo_wait | rxrr_fifo_wait;
assign edma_wait = rxrd_fifo_wait | emmu_read; assign edma_wait = rxrd_fifo_wait | emmu_read;
endmodule // erx_disty endmodule // erx_disty
// Local Variables: // Local Variables: