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cndm: Fully share SQ/RQ HW resources

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Signed-off-by: Alex Forencich <alex@alexforencich.com>
This commit is contained in:
Alex Forencich
2026-03-06 15:23:20 -08:00
parent d0c9ae0637
commit ce8da1bc59
6 changed files with 240 additions and 81 deletions
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6
src/cndm/rtl/cndm_micro_core.sv
View File

@@ -304,9 +304,11 @@ cmd_mbox_inst (
// datapath manager
localparam APB_DP_ADDR_W = 16+$clog2(PORTS+PORT_OFFSET_DP);
taxi_apb_if #(
.DATA_W(32),
.ADDR_W(16+$clog2(PORTS+PORT_OFFSET_DP))
.ADDR_W(APB_DP_ADDR_W)
)
apb_dp_ctrl();
@@ -346,7 +348,7 @@ apb_port_dp_ctrl[PORT_OFFSET_DP+PORTS]();
taxi_apb_interconnect #(
.M_CNT($size(apb_port_dp_ctrl)),
.ADDR_W(apb_dp_ctrl.ADDR_W),
.ADDR_W(APB_DP_ADDR_W),
.M_REGIONS(1),
.M_BASE_ADDR('0),
.M_ADDR_W({$size(apb_port_dp_ctrl){{1{32'd16}}}}),

27
src/cndm/rtl/cndm_micro_desc_rd.sv
View File

@@ -41,7 +41,7 @@ module cndm_micro_desc_rd #(
taxi_dma_desc_if.sts_snk dma_rd_desc_sts,
taxi_dma_ram_if.wr_slv dma_ram_wr,
input wire logic [1:0] desc_req,
taxi_axis_if.snk s_axis_desc_req,
taxi_axis_if.src m_axis_desc
);
@@ -132,7 +132,9 @@ typedef enum logic [1:0] {
state_t state_reg = STATE_IDLE;
logic [1:0] desc_req_reg = '0;
logic s_axis_desc_req_tready_reg = 1'b0;
assign s_axis_desc_req.tready = s_axis_desc_req_tready_reg;
always_ff @(posedge clk) begin
dma_rd_desc_req.req_src_sel <= '0;
@@ -163,25 +165,18 @@ always_ff @(posedge clk) begin
wq_req_valid_reg <= wq_req_valid_reg && !wq_req_ready;
wq_rsp_ready_reg <= 1'b0;
desc_req_reg <= desc_req_reg | desc_req;
s_axis_desc_req_tready_reg <= 1'b0;
case (state_reg)
STATE_IDLE: begin
wq_req_wqn_reg <= 0;
s_axis_desc_req_tready_reg <= 1'b1;
if (desc_req_reg[1]) begin
desc_req_reg[1] <= 1'b0;
wq_req_wqn_reg <= 1;
wq_req_qtype_reg <= QTYPE_RQ;
if (s_axis_desc_req.tvalid && s_axis_desc_req.tready) begin
s_axis_desc_req_tready_reg <= 1'b0;
wq_req_wqn_reg <= s_axis_desc_req.tdest;
wq_req_qtype_reg <= s_axis_desc_req.tuser;
wq_req_valid_reg <= 1'b1;
dma_desc.req_id <= 1'b1;
state_reg <= STATE_QUERY_WQ;
end else if (desc_req_reg[0]) begin
desc_req_reg[0] <= 1'b0;
wq_req_wqn_reg <= 0;
wq_req_qtype_reg <= QTYPE_SQ;
wq_req_valid_reg <= 1'b1;
dma_desc.req_id <= 1'b0;
dma_desc.req_id <= s_axis_desc_req.tid;
state_reg <= STATE_QUERY_WQ;
end else begin
state_reg <= STATE_IDLE;

66
src/cndm/rtl/cndm_micro_dp_mgr.sv
View File

@@ -26,7 +26,12 @@ module cndm_micro_dp_mgr #
parameter PTP_BASE_ADDR_DP = 0,
parameter PORT_BASE_ADDR_DP = 0,
parameter PORT_BASE_ADDR_HOST = 0
parameter PORT_BASE_ADDR_HOST = 0,
parameter PORT_STRIDE = 'h10000,
parameter WQ_REG_STRIDE = 32,
parameter QM_OFFSET = 'h0000,
parameter CQM_OFFSET = 'h4000,
parameter PORT_CTRL_OFFSET = 'h8000
)
(
input wire logic clk,
@@ -103,6 +108,7 @@ typedef enum logic [4:0] {
STATE_CREATE_Q_SET_BASE_H,
STATE_CREATE_Q_SET_DQN,
STATE_CREATE_Q_ENABLE,
STATE_CREATE_Q_PORT_CONFIG,
STATE_DESTROY_Q_DISABLE,
STATE_PTP_READ_1,
STATE_PTP_READ_2,
@@ -282,48 +288,48 @@ always_comb begin
begin
cnt_next = 2**CQN_W-1;
qtype_next = QTYPE_CQ;
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;
dp_ptr_next = DP_APB_ADDR_W'((port_reg * PORT_STRIDE) + CQM_OFFSET + PORT_BASE_ADDR_DP);
host_ptr_next = (port_reg * PORT_STRIDE) + CQM_OFFSET + PORT_BASE_ADDR_HOST;
end
CMD_OP_MODIFY_CQ,
CMD_OP_QUERY_CQ,
CMD_OP_DESTROY_CQ:
begin
qtype_next = QTYPE_CQ;
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;
dp_ptr_next = DP_APB_ADDR_W'((port_reg * PORT_STRIDE) + CQM_OFFSET + (qn_reg * WQ_REG_STRIDE) + PORT_BASE_ADDR_DP);
host_ptr_next = (port_reg * PORT_STRIDE) + CQM_OFFSET + (qn_reg * WQ_REG_STRIDE) + PORT_BASE_ADDR_HOST;
end
// SQ
CMD_OP_CREATE_SQ:
begin
cnt_next = 0;
cnt_next = 2**WQN_W-1;
qtype_next = QTYPE_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;
dp_ptr_next = DP_APB_ADDR_W'((port_reg * PORT_STRIDE) + QM_OFFSET + PORT_BASE_ADDR_DP);
host_ptr_next = (port_reg * PORT_STRIDE) + QM_OFFSET + PORT_BASE_ADDR_HOST;
end
CMD_OP_MODIFY_SQ,
CMD_OP_QUERY_SQ,
CMD_OP_DESTROY_SQ:
begin
qtype_next = QTYPE_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;
dp_ptr_next = DP_APB_ADDR_W'((port_reg * PORT_STRIDE) + QM_OFFSET + (qn_reg * WQ_REG_STRIDE) + PORT_BASE_ADDR_DP);
host_ptr_next = (port_reg * PORT_STRIDE) + QM_OFFSET + (qn_reg * WQ_REG_STRIDE) + PORT_BASE_ADDR_HOST;
end
// RQ
CMD_OP_CREATE_RQ:
begin
cnt_next = 0;
cnt_next = 2**WQN_W-1;
qtype_next = QTYPE_RQ;
dp_ptr_next = DP_APB_ADDR_W'({port_reg, 16'd0} | 'h0020) + DP_APB_ADDR_W'(PORT_BASE_ADDR_DP);
host_ptr_next = 32'({port_reg, 16'd0} | 'h0020) + PORT_BASE_ADDR_HOST;
dp_ptr_next = DP_APB_ADDR_W'((port_reg * PORT_STRIDE) + QM_OFFSET + (qn_reg * WQ_REG_STRIDE) + PORT_BASE_ADDR_DP);
host_ptr_next = (port_reg * PORT_STRIDE) + QM_OFFSET + (qn_reg * WQ_REG_STRIDE) + PORT_BASE_ADDR_HOST;
end
CMD_OP_MODIFY_RQ,
CMD_OP_QUERY_RQ,
CMD_OP_DESTROY_RQ:
begin
qtype_next = QTYPE_RQ;
dp_ptr_next = DP_APB_ADDR_W'({port_reg, 16'd0} | 'h0020) + DP_APB_ADDR_W'(PORT_BASE_ADDR_DP);
host_ptr_next = 32'({port_reg, 16'd0} | 'h0020) + PORT_BASE_ADDR_HOST;
dp_ptr_next = DP_APB_ADDR_W'((port_reg * PORT_STRIDE) + QM_OFFSET + PORT_BASE_ADDR_DP);
host_ptr_next = (port_reg * PORT_STRIDE) + QM_OFFSET + PORT_BASE_ADDR_HOST;
end
default: begin end
endcase
@@ -488,8 +494,8 @@ always_comb begin
end else begin
// queue is active
qn_next = qn_reg + 1;
dp_ptr_next = dp_ptr_reg + 'h20;
host_ptr_next = host_ptr_reg + 'h20;
dp_ptr_next = dp_ptr_reg + WQ_REG_STRIDE;
host_ptr_next = host_ptr_reg + WQ_REG_STRIDE;
if (cnt_reg == 0) begin
// no more queues
m_axis_rsp_tdata_next = '0; // TODO
@@ -614,9 +620,27 @@ always_comb begin
m_apb_dp_ctrl_psel_next = 1'b1;
m_apb_dp_ctrl_pwrite_next = 1'b1;
m_apb_dp_ctrl_pwdata_next = '0;
m_apb_dp_ctrl_pwdata_next[19:16] = cmd_ram_rd_data[3:0];
m_apb_dp_ctrl_pwdata_next[23:20] = 4'(qtype_reg);
m_apb_dp_ctrl_pwdata_next[0] = 1'b1;
m_apb_dp_ctrl_pwdata_next[23:20] = 4'(qtype_reg); // type
m_apb_dp_ctrl_pwdata_next[19:16] = cmd_ram_rd_data[3:0]; // size
m_apb_dp_ctrl_pwdata_next[0] = 1'b1; // enable
m_apb_dp_ctrl_pstrb_next = '1;
state_next = STATE_CREATE_Q_PORT_CONFIG;
end else begin
state_next = STATE_CREATE_Q_ENABLE;
end
end
STATE_CREATE_Q_PORT_CONFIG: begin
// set up port
if (!m_apb_dp_ctrl_psel_reg) begin
if (qtype_reg == QTYPE_SQ) begin
m_apb_dp_ctrl_paddr_next = DP_APB_ADDR_W'(PORT_BASE_ADDR_DP + (port_reg * PORT_STRIDE) + PORT_CTRL_OFFSET + 'h0010);
end else begin
m_apb_dp_ctrl_paddr_next = DP_APB_ADDR_W'(PORT_BASE_ADDR_DP + (port_reg * PORT_STRIDE) + PORT_CTRL_OFFSET + 'h0020);
end
m_apb_dp_ctrl_psel_next = 1'b1;
m_apb_dp_ctrl_pwrite_next = qtype_reg == QTYPE_SQ || qtype_reg == QTYPE_RQ;
m_apb_dp_ctrl_pwdata_next = 32'(qn_reg);
m_apb_dp_ctrl_pstrb_next = '1;
m_axis_rsp_tdata_next = '0; // TODO
@@ -625,7 +649,7 @@ always_comb begin
state_next = STATE_SEND_RSP;
end else begin
state_next = STATE_CREATE_Q_ENABLE;
state_next = STATE_CREATE_Q_PORT_CONFIG;
end
end
STATE_DESTROY_Q_DISABLE: begin

113
src/cndm/rtl/cndm_micro_port.sv
View File

@@ -74,15 +74,20 @@ module cndm_micro_port #(
localparam AXIL_ADDR_W = s_axil_ctrl_wr.ADDR_W;
localparam AXIL_DATA_W = s_axil_ctrl_wr.DATA_W;
localparam APB_ADDR_W = s_apb_dp_ctrl.ADDR_W;
localparam APB_DATA_W = s_apb_dp_ctrl.DATA_W;
localparam RAM_SEGS = dma_ram_wr.SEGS;
localparam RAM_SEG_ADDR_W = dma_ram_wr.SEG_ADDR_W;
localparam RAM_SEG_DATA_W = dma_ram_wr.SEG_DATA_W;
localparam RAM_SEG_BE_W = dma_ram_wr.SEG_BE_W;
localparam RAM_SEL_W = dma_ram_wr.SEL_W;
localparam PORT_ADDR_W = 14;
taxi_axil_if #(
.DATA_W(s_axil_ctrl_wr.DATA_W),
.ADDR_W(15),
.ADDR_W(PORT_ADDR_W),
.STRB_W(s_axil_ctrl_wr.STRB_W),
.AWUSER_EN(s_axil_ctrl_wr.AWUSER_EN),
.AWUSER_W(s_axil_ctrl_wr.AWUSER_W),
@@ -102,7 +107,7 @@ taxi_axil_interconnect_1s #(
.ADDR_W(s_axil_ctrl_wr.ADDR_W),
.M_REGIONS(1),
.M_BASE_ADDR('0),
.M_ADDR_W({$size(axil_ctrl){{1{32'd15}}}}),
.M_ADDR_W({$size(axil_ctrl){{1{32'd14}}}}),
.M_SECURE({$size(axil_ctrl){1'b0}})
)
port_intercon_inst (
@@ -124,16 +129,16 @@ port_intercon_inst (
taxi_apb_if #(
.DATA_W(32),
.ADDR_W(15)
.ADDR_W(PORT_ADDR_W)
)
apb_dp_ctrl[2]();
apb_dp_ctrl[3]();
taxi_apb_interconnect #(
.M_CNT($size(apb_dp_ctrl)),
.ADDR_W(s_apb_dp_ctrl.ADDR_W),
.M_REGIONS(1),
.M_BASE_ADDR('0),
.M_ADDR_W({$size(apb_dp_ctrl){{1{32'd15}}}}),
.M_ADDR_W({$size(apb_dp_ctrl){{1{32'd14}}}}),
.M_SECURE({$size(apb_dp_ctrl){1'b0}})
)
port_dp_intercon_inst (
@@ -151,6 +156,47 @@ port_dp_intercon_inst (
.m_apb(apb_dp_ctrl)
);
// Port control registers
logic apb_dp_ctrl_pready_reg = 1'b0;
logic [APB_DATA_W-1:0] apb_dp_ctrl_prdata_reg = '0;
assign apb_dp_ctrl[2].pready = apb_dp_ctrl_pready_reg;
assign apb_dp_ctrl[2].prdata = apb_dp_ctrl_prdata_reg;
assign apb_dp_ctrl[2].pslverr = 1'b0;
assign apb_dp_ctrl[2].pruser = '0;
assign apb_dp_ctrl[2].pbuser = '0;
logic [WQN_W-1:0] tx_queue_reg = '0;
logic [WQN_W-1:0] rx_queue_reg = '0;
always_ff @(posedge clk) begin
apb_dp_ctrl_pready_reg <= 1'b0;
if (apb_dp_ctrl[2].penable && apb_dp_ctrl[2].psel && !apb_dp_ctrl_pready_reg) begin
apb_dp_ctrl_pready_reg <= 1'b1;
apb_dp_ctrl_prdata_reg <= '0;
if (apb_dp_ctrl[2].pwrite) begin
case (8'({apb_dp_ctrl[2].paddr >> 2, 2'b00}))
8'h10: tx_queue_reg <= WQN_W'(apb_dp_ctrl[2].pwdata);
8'h20: rx_queue_reg <= WQN_W'(apb_dp_ctrl[2].pwdata);
default: begin end
endcase
end
case (8'({apb_dp_ctrl[2].paddr >> 2, 2'b00}))
8'h10: apb_dp_ctrl_prdata_reg <= 32'(tx_queue_reg);
8'h20: apb_dp_ctrl_prdata_reg <= 32'(rx_queue_reg);
default: begin end
endcase
end
if (rst) begin
apb_dp_ctrl_pready_reg <= 1'b0;
end
end
taxi_dma_desc_if #(
.SRC_ADDR_W(dma_rd_desc_req.SRC_ADDR_W),
.SRC_SEL_EN(dma_rd_desc_req.SRC_SEL_EN),
@@ -267,7 +313,50 @@ wr_dma_mux_inst (
);
// descriptor fetch
wire [1:0] desc_req;
taxi_axis_if #(
.DATA_W(8),
.KEEP_EN(0),
.LAST_EN(1),
.ID_EN(1),
.ID_W(1),
.DEST_EN(1),
.DEST_W(WQN_W),
.USER_EN(1),
.USER_W(3)
) axis_desc_req();
taxi_axis_if #(
.DATA_W(8),
.KEEP_EN(0),
.LAST_EN(1),
.ID_EN(1),
.ID_W(1),
.DEST_EN(1),
.DEST_W(WQN_W),
.USER_EN(1),
.USER_W(3)
) axis_desc_req_txrx[2]();
taxi_axis_arb_mux #(
.S_COUNT(2),
.UPDATE_TID(1),
.ARB_ROUND_ROBIN(0),
.ARB_LSB_HIGH_PRIO(0) // prefer RX requests
)
desc_req_mux_inst (
.clk(clk),
.rst(rst),
/*
* AXI4-Stream input (sink)
*/
.s_axis(axis_desc_req_txrx),
/*
* AXI4-Stream output (source)
*/
.m_axis(axis_desc_req)
);
taxi_axis_if #(
.DATA_W(16*8),
@@ -307,7 +396,7 @@ desc_rd_inst (
.dma_rd_desc_sts(dma_rd_desc_int[0]),
.dma_ram_wr(dma_ram_wr_int[0]),
.desc_req(desc_req),
.s_axis_desc_req(axis_desc_req),
.m_axis_desc(axis_desc)
);
@@ -533,6 +622,8 @@ tx_cpl_fifo (
);
cndm_micro_tx #(
.WQN_W(WQN_W),
.PTP_TS_EN(PTP_TS_EN),
.PTP_TS_FMT_TOD(PTP_TS_FMT_TOD)
)
@@ -554,7 +645,8 @@ tx_inst (
.dma_rd_desc_sts(dma_rd_desc_int[1]),
.dma_ram_wr(dma_ram_wr_int[1]),
.desc_req(desc_req[0]),
.tx_queue(tx_queue_reg),
.m_axis_desc_req(axis_desc_req_txrx[0]),
.s_axis_desc(axis_desc_txrx[0]),
.tx_data(mac_tx_int),
.tx_cpl(mac_tx_cpl_int),
@@ -617,6 +709,8 @@ rx_fifo (
);
cndm_micro_rx #(
.WQN_W(WQN_W),
.PTP_TS_EN(PTP_TS_EN),
.PTP_TS_FMT_TOD(PTP_TS_FMT_TOD)
)
@@ -639,7 +733,8 @@ rx_inst (
.dma_ram_rd(dma_ram_rd_int[1]),
.rx_data(mac_rx_int),
.desc_req(desc_req[1]),
.rx_queue(rx_queue_reg),
.m_axis_desc_req(axis_desc_req_txrx[1]),
.s_axis_desc(axis_desc_txrx[1]),
.m_axis_cpl(axis_cpl_txrx[1])
);

53
src/cndm/rtl/cndm_micro_rx.sv
View File

@@ -16,35 +16,45 @@ Authors:
* Corundum-micro receive datapath
*/
module cndm_micro_rx #(
parameter WQN_W = 5,
parameter logic PTP_TS_EN = 1'b1,
parameter logic PTP_TS_FMT_TOD = 1'b0
)
(
input wire logic clk,
input wire logic rst,
input wire logic clk,
input wire logic rst,
/*
* PTP
*/
input wire logic ptp_clk = 1'b0,
input wire logic ptp_rst = 1'b0,
input wire logic ptp_td_sdi = 1'b0,
input wire logic ptp_clk = 1'b0,
input wire logic ptp_rst = 1'b0,
input wire logic ptp_td_sdi = 1'b0,
/*
* DMA
*/
taxi_dma_desc_if.req_src dma_wr_desc_req,
taxi_dma_desc_if.sts_snk dma_wr_desc_sts,
taxi_dma_ram_if.rd_slv dma_ram_rd,
taxi_dma_desc_if.req_src dma_wr_desc_req,
taxi_dma_desc_if.sts_snk dma_wr_desc_sts,
taxi_dma_ram_if.rd_slv dma_ram_rd,
taxi_axis_if.snk rx_data,
output wire logic desc_req,
taxi_axis_if.snk s_axis_desc,
taxi_axis_if.src m_axis_cpl
taxi_axis_if.snk rx_data,
input wire logic [WQN_W-1:0] rx_queue,
taxi_axis_if.src m_axis_desc_req,
taxi_axis_if.snk s_axis_desc,
taxi_axis_if.src m_axis_cpl
);
localparam RAM_ADDR_W = 16;
typedef enum logic [2:0] {
QTYPE_EQ,
QTYPE_CQ,
QTYPE_SQ,
QTYPE_RQ
} qtype_t;
taxi_dma_desc_if #(
.SRC_ADDR_W(RAM_ADDR_W),
.SRC_SEL_EN(1'b0),
@@ -70,9 +80,18 @@ typedef enum logic [1:0] {
state_t state_reg = STATE_IDLE;
logic desc_req_reg = 1'b0;
logic m_axis_desc_req_tvalid_reg = 1'b0;
logic [WQN_W-1:0] m_axis_desc_req_tdest_reg = '0;
logic [2:0] m_axis_desc_req_tuser_reg = '0;
assign desc_req = desc_req_reg;
assign m_axis_desc_req.tdata = '0;
assign m_axis_desc_req.tkeep = '0;
assign m_axis_desc_req.tstrb = '0;
assign m_axis_desc_req.tlast = 1'b1;
assign m_axis_desc_req.tvalid = m_axis_desc_req_tvalid_reg;
assign m_axis_desc_req.tid = '0;
assign m_axis_desc_req.tdest = rx_queue;
assign m_axis_desc_req.tuser = m_axis_desc_req_tuser_reg;
wire [95:0] rx_ptp_ts;
wire rx_ptp_ts_valid;
@@ -153,7 +172,7 @@ end else begin
end
always_ff @(posedge clk) begin
desc_req_reg <= 1'b0;
m_axis_desc_req_tvalid_reg <= m_axis_desc_req_tvalid_reg && !m_axis_desc_req.tready;
s_axis_desc.tready <= 1'b0;
@@ -205,7 +224,9 @@ always_ff @(posedge clk) begin
dma_wr_desc_req.req_len <= 20'(dma_desc.sts_len);
m_axis_cpl.tdata[47:32] <= 16'(dma_desc.sts_len);
if (dma_desc.sts_valid) begin
desc_req_reg <= 1'b1;
m_axis_desc_req_tvalid_reg <= 1'b1;
m_axis_desc_req_tdest_reg <= rx_queue;
m_axis_desc_req_tuser_reg <= QTYPE_RQ;
state_reg <= STATE_READ_DESC;
end
end

56
src/cndm/rtl/cndm_micro_tx.sv
View File

@@ -16,36 +16,46 @@ Authors:
* Corundum-micro transmit datapath
*/
module cndm_micro_tx #(
parameter WQN_W = 5,
parameter logic PTP_TS_EN = 1'b1,
parameter logic PTP_TS_FMT_TOD = 1'b0
)
(
input wire logic clk,
input wire logic rst,
input wire logic clk,
input wire logic rst,
/*
* PTP
*/
input wire logic ptp_clk = 1'b0,
input wire logic ptp_rst = 1'b0,
input wire logic ptp_td_sdi = 1'b0,
input wire logic ptp_clk = 1'b0,
input wire logic ptp_rst = 1'b0,
input wire logic ptp_td_sdi = 1'b0,
/*
* DMA
*/
taxi_dma_desc_if.req_src dma_rd_desc_req,
taxi_dma_desc_if.sts_snk dma_rd_desc_sts,
taxi_dma_ram_if.wr_slv dma_ram_wr,
taxi_dma_desc_if.req_src dma_rd_desc_req,
taxi_dma_desc_if.sts_snk dma_rd_desc_sts,
taxi_dma_ram_if.wr_slv dma_ram_wr,
output wire logic desc_req,
taxi_axis_if.snk s_axis_desc,
taxi_axis_if.src tx_data,
taxi_axis_if.snk tx_cpl,
taxi_axis_if.src m_axis_cpl
input wire logic [WQN_W-1:0] tx_queue,
taxi_axis_if.src m_axis_desc_req,
taxi_axis_if.snk s_axis_desc,
taxi_axis_if.src tx_data,
taxi_axis_if.snk tx_cpl,
taxi_axis_if.src m_axis_cpl
);
localparam RAM_ADDR_W = 16;
typedef enum logic [2:0] {
QTYPE_EQ,
QTYPE_CQ,
QTYPE_SQ,
QTYPE_RQ
} qtype_t;
taxi_dma_desc_if #(
.SRC_ADDR_W(RAM_ADDR_W),
.SRC_SEL_EN(1'b0),
@@ -71,9 +81,18 @@ typedef enum logic [1:0] {
state_t state_reg = STATE_IDLE;
logic desc_req_reg = 1'b0;
logic m_axis_desc_req_tvalid_reg = 1'b0;
logic [WQN_W-1:0] m_axis_desc_req_tdest_reg = '0;
logic [2:0] m_axis_desc_req_tuser_reg = '0;
assign desc_req = desc_req_reg;
assign m_axis_desc_req.tdata = '0;
assign m_axis_desc_req.tkeep = '0;
assign m_axis_desc_req.tstrb = '0;
assign m_axis_desc_req.tlast = 1'b1;
assign m_axis_desc_req.tvalid = m_axis_desc_req_tvalid_reg;
assign m_axis_desc_req.tid = '0;
assign m_axis_desc_req.tdest = m_axis_desc_req_tdest_reg;
assign m_axis_desc_req.tuser = m_axis_desc_req_tuser_reg;
wire [95:0] tx_cpl_ptp_ts;
wire tx_cpl_valid;
@@ -138,7 +157,7 @@ end else begin
end
always_ff @(posedge clk) begin
desc_req_reg <= 1'b0;
m_axis_desc_req_tvalid_reg <= m_axis_desc_req_tvalid_reg && !m_axis_desc_req.tready;
s_axis_desc.tready <= 1'b0;
@@ -175,7 +194,10 @@ always_ff @(posedge clk) begin
case (state_reg)
STATE_IDLE: begin
desc_req_reg <= 1'b1;
m_axis_desc_req_tvalid_reg <= 1'b1;
m_axis_desc_req_tdest_reg <= tx_queue;
m_axis_desc_req_tuser_reg <= QTYPE_SQ;
state_reg <= STATE_READ_DESC;
end
STATE_READ_DESC: begin