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merged changes in axis

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This commit is contained in:
Alex Forencich 2020-09-03 15:56:55 -07:00
commit 4b5cdce7ab
7 changed files with 33 additions and 12 deletions
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30
lib/axis/rtl/axis_ram_switch.v
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@ -93,7 +93,9 @@ module axis_ram_switch #
// arbitration type: "PRIORITY" or "ROUND_ROBIN"
parameter ARB_TYPE = "ROUND_ROBIN",
// LSB priority: "LOW", "HIGH"
parameter LSB_PRIORITY = "HIGH"
parameter LSB_PRIORITY = "HIGH",
// RAM read data output pipeline stages
parameter RAM_PIPELINE = 2
)
(
input wire clk,
@ -217,8 +219,8 @@ end
// Shared RAM
reg [DATA_WIDTH-1:0] mem[(2**RAM_ADDR_WIDTH)-1:0];
reg [DATA_WIDTH-1:0] mem_read_data_reg;
reg [M_COUNT-1:0] mem_read_data_valid_reg;
reg [DATA_WIDTH-1:0] mem_read_data_reg[RAM_PIPELINE-1:0];
reg [M_COUNT-1:0] mem_read_data_valid_reg[RAM_PIPELINE-1:0];
wire [S_COUNT*DATA_WIDTH-1:0] port_ram_wr_data;
wire [S_COUNT*RAM_ADDR_WIDTH-1:0] port_ram_wr_addr;
@ -231,8 +233,8 @@ wire [M_COUNT-1:0] port_ram_rd_ack;
wire [M_COUNT*DATA_WIDTH-1:0] port_ram_rd_data;
wire [M_COUNT-1:0] port_ram_rd_data_valid;
assign port_ram_rd_data = {M_COUNT{mem_read_data_reg}};
assign port_ram_rd_data_valid = mem_read_data_valid_reg;
assign port_ram_rd_data = {M_COUNT{mem_read_data_reg[RAM_PIPELINE-1]}};
assign port_ram_rd_data_valid = mem_read_data_valid_reg[RAM_PIPELINE-1];
wire [CL_S_COUNT-1:0] ram_wr_sel;
wire ram_wr_en;
@ -306,16 +308,26 @@ end
endgenerate
integer s;
always @(posedge clk) begin
mem_read_data_valid_reg <= 0;
mem_read_data_valid_reg[0] <= 0;
for (s = RAM_PIPELINE-1; s > 0; s = s - 1) begin
mem_read_data_reg[s] <= mem_read_data_reg[s-1];
mem_read_data_valid_reg[s] <= mem_read_data_valid_reg[s-1];
end
if (ram_rd_en) begin
mem_read_data_reg <= mem[port_ram_rd_addr[ram_rd_sel*RAM_ADDR_WIDTH +: RAM_ADDR_WIDTH]];
mem_read_data_valid_reg <= 1 << ram_rd_sel;
mem_read_data_reg[0] <= mem[port_ram_rd_addr[ram_rd_sel*RAM_ADDR_WIDTH +: RAM_ADDR_WIDTH]];
mem_read_data_valid_reg[0] <= 1 << ram_rd_sel;
end
if (rst) begin
mem_read_data_valid_reg <= 0;
mem_read_data_valid_reg[0] <= 0;
for (s = 0; s < RAM_PIPELINE; s = s + 1) begin
mem_read_data_valid_reg[s] <= 0;
end
end
end

1
lib/axis/tb/test_axis_ram_switch_1x4_256_64.py
View File

@ -72,6 +72,7 @@ def bench():
M_CONNECT = [0b1111]*M_COUNT
ARB_TYPE = "ROUND_ROBIN"
LSB_PRIORITY = "HIGH"
RAM_PIPELINE = 2
# Inputs
clk = Signal(bool(0))

4
lib/axis/tb/test_axis_ram_switch_1x4_256_64.v
View File

@ -56,6 +56,7 @@ parameter M_TOP = {3'd3, 3'd2, 3'd1, 3'd0};
parameter M_CONNECT = {M_COUNT{{S_COUNT{1'b1}}}};
parameter ARB_TYPE = "ROUND_ROBIN";
parameter LSB_PRIORITY = "HIGH";
parameter RAM_PIPELINE = 2;
// Inputs
reg clk = 0;
@ -142,7 +143,8 @@ axis_ram_switch #(
.M_TOP(M_TOP),
.M_CONNECT(M_CONNECT),
.ARB_TYPE(ARB_TYPE),
.LSB_PRIORITY(LSB_PRIORITY)
.LSB_PRIORITY(LSB_PRIORITY),
.RAM_PIPELINE(RAM_PIPELINE)
)
UUT (
.clk(clk),

1
lib/axis/tb/test_axis_ram_switch_4x1_64_256.py
View File

@ -72,6 +72,7 @@ def bench():
M_CONNECT = [0b1111]*M_COUNT
ARB_TYPE = "ROUND_ROBIN"
LSB_PRIORITY = "HIGH"
RAM_PIPELINE = 2
# Inputs
clk = Signal(bool(0))

4
lib/axis/tb/test_axis_ram_switch_4x1_64_256.v
View File

@ -56,6 +56,7 @@ parameter M_TOP = {3'd3, 3'd2, 3'd1, 3'd0};
parameter M_CONNECT = {M_COUNT{{S_COUNT{1'b1}}}};
parameter ARB_TYPE = "ROUND_ROBIN";
parameter LSB_PRIORITY = "HIGH";
parameter RAM_PIPELINE = 2;
// Inputs
reg clk = 0;
@ -142,7 +143,8 @@ axis_ram_switch #(
.M_TOP(M_TOP),
.M_CONNECT(M_CONNECT),
.ARB_TYPE(ARB_TYPE),
.LSB_PRIORITY(LSB_PRIORITY)
.LSB_PRIORITY(LSB_PRIORITY),
.RAM_PIPELINE(RAM_PIPELINE)
)
UUT (
.clk(clk),

1
lib/axis/tb/test_axis_ram_switch_4x4_64_64.py
View File

@ -70,6 +70,7 @@ def bench():
M_CONNECT = [0b1111]*M_COUNT
ARB_TYPE = "ROUND_ROBIN"
LSB_PRIORITY = "HIGH"
RAM_PIPELINE = 2
# Inputs
clk = Signal(bool(0))

4
lib/axis/tb/test_axis_ram_switch_4x4_64_64.v
View File

@ -56,6 +56,7 @@ parameter M_TOP = {3'd3, 3'd2, 3'd1, 3'd0};
parameter M_CONNECT = {M_COUNT{{S_COUNT{1'b1}}}};
parameter ARB_TYPE = "ROUND_ROBIN";
parameter LSB_PRIORITY = "HIGH";
parameter RAM_PIPELINE = 2;
// Inputs
reg clk = 0;
@ -142,7 +143,8 @@ axis_ram_switch #(
.M_TOP(M_TOP),
.M_CONNECT(M_CONNECT),
.ARB_TYPE(ARB_TYPE),
.LSB_PRIORITY(LSB_PRIORITY)
.LSB_PRIORITY(LSB_PRIORITY),
.RAM_PIPELINE(RAM_PIPELINE)
)
UUT (
.clk(clk),