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cndm: Peel off queue management logic, store queue state in distributed RAM

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Signed-off-by: Alex Forencich <alex@alexforencich.com>
This commit is contained in:
Alex Forencich
2026-03-05 18:04:43 -08:00
parent 8f1c082174
commit 7dbe6df56a
7 changed files with 407 additions and 200 deletions
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25
src/cndm/rtl/cndm_micro_dp_mgr.sv
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@@ -18,8 +18,12 @@ Authors:
module cndm_micro_dp_mgr #
(
parameter PORTS = 2,
parameter CQN_W = 5,
parameter logic PTP_EN = 1'b1,
parameter PTP_BASE_ADDR_DP = 0,
parameter PORT_BASE_ADDR_DP = 0,
parameter PORT_BASE_ADDR_HOST = 0
)
@@ -247,9 +251,9 @@ always_comb begin
// determine block base address
case (opcode_reg)
// // EQ
// CMD_OP_CREATE_EQ:
// begin
// // EQ
// qn_next = 0;
// dp_ptr_next = DP_APB_ADDR_W'({port_reg, 16'd0} | 'h8000) + DP_APB_ADDR_W'(PORT_BASE_ADDR_DP);
// host_ptr_next = 32'({port_reg, 16'd0} | 'h8000) + PORT_BASE_ADDR_HOST;
@@ -258,14 +262,13 @@ always_comb begin
// CMD_OP_QUERY_EQ,
// CMD_OP_DESTROY_EQ:
// begin
// // EQ
// dp_ptr_next = DP_APB_ADDR_W'({port_reg, 16'd0} | 'h8000) + DP_APB_ADDR_W'(PORT_BASE_ADDR_DP);
// host_ptr_next = 32'({port_reg, 16'd0} | 'h8000) + PORT_BASE_ADDR_HOST;
// end
// CQ
CMD_OP_CREATE_CQ:
begin
// CQ
cnt_next = 1;
cnt_next = 2**CQN_W-1;
dp_ptr_next = DP_APB_ADDR_W'({port_reg, 16'd0} | 'h8000) + DP_APB_ADDR_W'(PORT_BASE_ADDR_DP);
host_ptr_next = 32'({port_reg, 16'd0} | 'h8000) + PORT_BASE_ADDR_HOST;
end
@@ -273,13 +276,12 @@ always_comb begin
CMD_OP_QUERY_CQ,
CMD_OP_DESTROY_CQ:
begin
// CQ
dp_ptr_next = DP_APB_ADDR_W'({port_reg, 16'd0} | 'h8000 | {qn_reg, 8'd00}) + DP_APB_ADDR_W'(PORT_BASE_ADDR_DP);
host_ptr_next = 32'({port_reg, 16'd0} | 'h8000 | {qn_reg, 8'd00}) + PORT_BASE_ADDR_HOST;
dp_ptr_next = DP_APB_ADDR_W'({port_reg, 16'd0} | 'h8000 | {qn_reg, 5'd00}) + DP_APB_ADDR_W'(PORT_BASE_ADDR_DP);
host_ptr_next = 32'({port_reg, 16'd0} | 'h8000 | {qn_reg, 5'd00}) + PORT_BASE_ADDR_HOST;
end
// SQ
CMD_OP_CREATE_SQ:
begin
// SQ
cnt_next = 0;
dp_ptr_next = DP_APB_ADDR_W'({port_reg, 16'd0} | 'h0000) + DP_APB_ADDR_W'(PORT_BASE_ADDR_DP);
host_ptr_next = 32'({port_reg, 16'd0} | 'h0000) + PORT_BASE_ADDR_HOST;
@@ -288,13 +290,12 @@ always_comb begin
CMD_OP_QUERY_SQ,
CMD_OP_DESTROY_SQ:
begin
// SQ
dp_ptr_next = DP_APB_ADDR_W'({port_reg, 16'd0} | 'h0000) + DP_APB_ADDR_W'(PORT_BASE_ADDR_DP);
host_ptr_next = 32'({port_reg, 16'd0} | 'h0000) + PORT_BASE_ADDR_HOST;
end
// RQ
CMD_OP_CREATE_RQ:
begin
// RQ
cnt_next = 0;
dp_ptr_next = DP_APB_ADDR_W'({port_reg, 16'd0} | 'h0100) + DP_APB_ADDR_W'(PORT_BASE_ADDR_DP);
host_ptr_next = 32'({port_reg, 16'd0} | 'h0100) + PORT_BASE_ADDR_HOST;
@@ -303,7 +304,6 @@ always_comb begin
CMD_OP_QUERY_RQ,
CMD_OP_DESTROY_RQ:
begin
// RQ
dp_ptr_next = DP_APB_ADDR_W'({port_reg, 16'd0} | 'h0100) + DP_APB_ADDR_W'(PORT_BASE_ADDR_DP);
host_ptr_next = 32'({port_reg, 16'd0} | 'h0100) + PORT_BASE_ADDR_HOST;
end
@@ -470,7 +470,8 @@ always_comb begin
end else begin
// queue is active
qn_next = qn_reg + 1;
dp_ptr_next = dp_ptr_reg + 'h100;
dp_ptr_next = dp_ptr_reg + 'h20;
host_ptr_next = host_ptr_reg + 'h20;
if (cnt_reg == 0) begin
// no more queues
m_axis_rsp_tdata_next = '0; // TODO