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Add burst write/read support to matmul AXI slave for DMA compatibility

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FallenSigh
2026-06-25 00:08:29 +08:00
parent 1660b283c4
commit 20d5a541ad
1 changed files with 34 additions and 8 deletions
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42
rtl/ip/matmul/matmul_axi_slave.v
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@@ -62,7 +62,11 @@ reg [65:0] c_data [0:15];
reg [31:0] awaddr_hold;
reg [4:0] awid_hold;
reg [7:0] awlen_hold;
reg [7:0] wbeat_cnt;
reg aw_hold_valid;
reg rburst_active;
reg [7:0] rburst_rem;
reg [31:0] wdata_hold;
reg [3:0] wstrb_hold;
reg w_hold_valid;
@@ -199,6 +203,8 @@ always @(posedge clk) begin
w_hold_valid <= 1'b0;
s_axi_bid <= 5'b0;
s_axi_bvalid <= 1'b0;
wbeat_cnt <= 8'd0;
rburst_active <= 1'b0;
s_axi_rid <= 5'b0;
s_axi_rdata <= 32'b0;
s_axi_rvalid <= 1'b0;
@@ -216,6 +222,7 @@ always @(posedge clk) begin
if (s_axi_awvalid && s_axi_awready) begin
awaddr_hold <= s_axi_awaddr;
awid_hold <= s_axi_awid;
awlen_hold <= s_axi_awlen;
aw_hold_valid <= 1'b1;
end
@@ -230,10 +237,15 @@ always @(posedge clk) begin
end
if (write_fire) begin
s_axi_bid <= awid_hold;
s_axi_bvalid <= 1'b1;
aw_hold_valid <= 1'b0;
w_hold_valid <= 1'b0;
wbeat_cnt <= wbeat_cnt + 8'd1;
w_hold_valid <= 1'b0;
if (s_axi_wlast) begin
s_axi_bid <= awid_hold;
s_axi_bvalid <= 1'b1;
aw_hold_valid <= 1'b0;
wbeat_cnt <= 8'd0;
end
if (write_offset == ADDR_SRC_BASE) begin
src_base <= apply_wstrb(src_base, wdata_hold, wstrb_hold);
@@ -251,14 +263,18 @@ always @(posedge clk) begin
if (wdata_hold[1]) done <= 1'b0;
if (wdata_hold[2]) error <= 1'b0;
end else if ((write_offset != ADDR_CTRL) && (write_offset < ADDR_C_BASE)) begin
$display("[MATMUL_SLAVE] ERROR: write to unmapped offset=%03x wdata=%08x", write_offset, wdata_hold);
error <= 1'b1;
end
awaddr_hold[31:0] <= awaddr_hold[31:0] + 32'd4;
end
if (s_axi_arvalid && s_axi_arready) begin
s_axi_rid <= s_axi_arid;
s_axi_rvalid <= 1'b1;
s_axi_rid <= s_axi_arid;
s_axi_rvalid <= 1'b1;
s_axi_rlast <= (s_axi_arlen == 8'd0);
rburst_rem <= s_axi_arlen;
rburst_active <= (s_axi_arlen > 8'd0);
if (read_offset == ADDR_CTRL) begin
s_axi_rdata <= 32'b0;
@@ -280,7 +296,17 @@ always @(posedge clk) begin
s_axi_rdata <= 32'b0;
end
end else if (s_axi_rvalid && s_axi_rready) begin
s_axi_rvalid <= 1'b0;
if (rburst_active && rburst_rem > 8'd0) begin
s_axi_rdata <= c_read_word((s_axi_araddr[11:0] - ADDR_C_BASE + 12'd4*(s_axi_arlen - rburst_rem + 8'd1)) >> 2);
rburst_rem <= rburst_rem - 8'd1;
s_axi_rlast <= (rburst_rem == 8'd1);
if (rburst_rem == 8'd1) begin
s_axi_rvalid <= 1'b0;
rburst_active <= 1'b0;
end
end else begin
s_axi_rvalid <= 1'b0;
end
end
if (start_fire) begin