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More tests in memlib/generate.py
Covers most of the todo list, at least functionally. Some minor issues with not always using hardware features.
This commit is contained in:
KrystalDelusion
parent
af1b9c9e07
commit
7f033d3c1f
13 changed files with 1180 additions and 12 deletions
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@ -1,13 +1,6 @@
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# TODO:
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# - memory initialization
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# - clock polarity combinations
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# - CE/srst/rdwr/be interactions
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# - priority logic
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# - byte enables, wrbe_separate
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# - duplication for read ports
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# - abits/dbits determination
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# - mixed width
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# - swizzles for weird width progressions
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@ -22,6 +15,7 @@ class Test:
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TESTS = []
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### basic sanity tests
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# Asynchronous-read RAM
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ASYNC = """
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module top(clk, ra, wa, rd, wd, we);
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@ -56,6 +50,7 @@ TESTS += [
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Test("async_small_block", ASYNC_SMALL, ["block_tdp"], [], {"RAM_BLOCK_TDP": 0}),
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]
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# Synchronous SDP read first
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SYNC = """
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module top(clk, ra, wa, rd, wd, we);
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@ -95,6 +90,261 @@ TESTS += [
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Test("sync_small_block_attr", SYNC_SMALL_BLOCK, ["lut", "block_tdp"], [], {"RAM_BLOCK_TDP": 1}),
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]
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### initialization values testing
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LUT_INIT = """
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module top(clk, ra, wa, rd, wd, we);
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localparam ABITS = {abits};
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localparam DBITS = {dbits};
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input wire clk;
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input wire we;
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input wire [ABITS-1:0] ra, wa;
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input wire [DBITS-1:0] wd;
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output wire [DBITS-1:0] rd;
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reg [DBITS-1:0] mem [0:2**ABITS-1];
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integer i;
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initial
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for (i = 0; i < 2**ABITS-1; i = i + 1)
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mem[i] = {ival};
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always @(posedge clk)
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if (we)
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mem[wa] <= wd;
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assign rd = mem[ra];
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endmodule
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"""
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INIT_LUT_ZEROS = LUT_INIT.format(abits=4, dbits=4, ival=0);
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INIT_LUT_VAL = LUT_INIT.format(abits=4, dbits=4, ival=5);
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INIT_LUT_VAL2 = LUT_INIT.format(abits=6, dbits=6, ival="6'h12");
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INIT_LUT_X = LUT_INIT.format(abits=4, dbits=4, ival="4'hx")
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TESTS += [
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Test("init_lut_zeros_zero", INIT_LUT_ZEROS, ["lut"], ["INIT_ZERO"], {"RAM_LUT":1}),
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Test("init_lut_zeros_any", INIT_LUT_ZEROS, ["lut"], ["INIT_ANY"], {"RAM_LUT":1}),
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Test("init_lut_val_zero", INIT_LUT_VAL, ["lut"], ["INIT_ZERO"], {"RAM_LUT":0}), #CHECK: no emulation?
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Test("init_lut_val_any", INIT_LUT_VAL, ["lut"], ["INIT_ANY"], {"RAM_LUT":1}),
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Test("init_lut_val_no_undef", INIT_LUT_VAL, ["lut"], ["INIT_NO_UNDEF"], {"RAM_LUT":1}),
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Test("init_lut_val2_any", INIT_LUT_VAL2, ["lut"], ["INIT_ANY"], {"RAM_LUT":8}),
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Test("init_lut_val2_no_undef", INIT_LUT_VAL2, ["lut"], ["INIT_NO_UNDEF"], {"RAM_LUT":8}),
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Test("init_lut_x_none", INIT_LUT_X, ["lut"], ["INIT_NONE"], {"RAM_LUT":1}),
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Test("init_lut_x_zero", INIT_LUT_X, ["lut"], ["INIT_ZERO"], {"RAM_LUT":1}),
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Test("init_lut_x_any", INIT_LUT_X, ["lut"], ["INIT_ANY"], {"RAM_LUT":1}),
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Test("init_lut_x_no_undef", INIT_LUT_X, ["lut"], ["INIT_NO_UNDEF"], {"RAM_LUT":1}),
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]
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### width testing 9-bit-per-byte
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RAM_9b1B = """
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module top(clk, ra, wa, rd, wd, we);
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localparam ABITS = {abits};
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localparam DBITS = {dbits};
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input wire clk;
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input wire we;
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input wire [ABITS-1:0] ra, wa;
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input wire [DBITS-1:0] wd;
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output reg [DBITS-1:0] rd;
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reg [DBITS-1:0] mem [0:2**ABITS-1];
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always @(posedge clk)
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if (we)
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mem[wa] <= wd;
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always @(posedge clk)
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rd <= mem[ra];
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endmodule
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"""
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RAM_18b2B = RAM_9b1B.format(abits=3, dbits=18);
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RAM_9b1B = RAM_9b1B.format(abits=4, dbits=9);
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RAM_4b1B = RAM_9b1B.format(abits=5, dbits=4);
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RAM_2b1B = RAM_9b1B.format(abits=6, dbits=2);
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RAM_1b1B = RAM_9b1B.format(abits=7, dbits=1);
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TESTS += [
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Test("ram_18b2B", RAM_18b2B, ["9b1B"], [], {"RAM_9b1B":1}),
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Test("ram_9b1B", RAM_9b1B, ["9b1B"], [], {"RAM_9b1B":1}),
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Test("ram_4b1B", RAM_4b1B, ["9b1B"], [], {"RAM_9b1B":1}),
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Test("ram_2b1B", RAM_2b1B, ["9b1B"], [], {"RAM_9b1B":1}),
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Test("ram_1b1B", RAM_1b1B, ["9b1B"], [], {"RAM_9b1B":1}),
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]
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### initializing 9-bits-per-byte
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RAM_9b1B_init = """
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module top(clk, ra, wa, rd, wd, we);
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localparam ABITS = {abits};
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localparam DBITS = {dbits};
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input wire clk;
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input wire we;
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input wire [ABITS-1:0] ra, wa;
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input wire [DBITS-1:0] wd;
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output reg [DBITS-1:0] rd;
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reg [DBITS-1:0] mem [0:2**ABITS-1];
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integer i;
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initial
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for (i = 0; i < 2**ABITS-1; i = i + 1)
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mem[i] = {ival};
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always @(posedge clk)
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if (we)
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mem[wa] <= wd;
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always @(posedge clk)
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rd <= mem[ra];
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endmodule
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"""
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INIT_9b1B_ZEROS = RAM_9b1B_init.format(abits=4, dbits=9, ival=0);
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INIT_9b1B_VAL = RAM_9b1B_init.format(abits=4, dbits=9, ival=275);
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INIT_13b2B_VAL = RAM_9b1B_init.format(abits=3, dbits=13, ival="13'h01f3")
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INIT_18b2B_VAL = RAM_9b1B_init.format(abits=4, dbits=18, ival="18'h1f39a");
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INIT_4b1B_X = RAM_9b1B_init.format(abits=5, dbits=4, ival="4'hx")
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TESTS += [
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Test("init_9b1B_zeros_zero", INIT_9b1B_ZEROS, ["9b1B"], ["INIT_ZERO"], {"RAM_9b1B":1}),
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Test("init_9b1B_zeros_any", INIT_9b1B_ZEROS, ["9b1B"], ["INIT_ANY"], {"RAM_9b1B":1}),
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Test("init_9b1B_val_zero", INIT_9b1B_VAL, ["9b1B"], ["INIT_ZERO"], {"RAM_9b1B":0}), #CHECK: no emulation?
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Test("init_9b1B_val_any", INIT_9b1B_VAL, ["9b1B"], ["INIT_ANY"], {"RAM_9b1B":1}),
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Test("init_9b1B_val_no_undef", INIT_9b1B_VAL, ["9b1B"], ["INIT_NO_UNDEF"], {"RAM_9b1B":1}),
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Test("init_13b2B_val_any", INIT_13b2B_VAL, ["9b1B"], ["INIT_ANY"], {"RAM_9b1B":1}),
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Test("init_18b2B_val_any", INIT_18b2B_VAL, ["9b1B"], ["INIT_ANY"], {"RAM_9b1B":2}),
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Test("init_18b2B_val_no_undef", INIT_18b2B_VAL, ["9b1B"], ["INIT_NO_UNDEF"], {"RAM_9b1B":2}),
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Test("init_4b1B_x_none", INIT_4b1B_X, ["9b1B"], ["INIT_NONE"], {"RAM_9b1B":1}),
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Test("init_4b1B_x_zero", INIT_4b1B_X, ["9b1B"], ["INIT_ZERO"], {"RAM_9b1B":1}),
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Test("init_4b1B_x_any", INIT_4b1B_X, ["9b1B"], ["INIT_ANY"], {"RAM_9b1B":1}),
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Test("init_4b1B_x_no_undef", INIT_4b1B_X, ["9b1B"], ["INIT_NO_UNDEF"], {"RAM_9b1B":1}),
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]
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### Clock polarity combinations
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# I'm not entirely convinced auto-test is correctly testing clock edging
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# but they do at least all gen/synth
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SYNCCLOCK = """
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module top(clk, ra, wa, rd, wd, we);
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localparam ABITS = {abits};
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localparam DBITS = 8;
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input wire clk;
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input wire we;
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input wire [ABITS-1:0] ra, wa;
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input wire [DBITS-1:0] wd;
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output reg [DBITS-1:0] rd;
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reg [DBITS-1:0] mem [0:2**ABITS-1];
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always @(posedge clk)
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if (we)
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mem[wa] <= wd;
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always @(posedge clk)
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rd <= mem[ra];
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endmodule
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"""
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for (abits, cnt, wclk, rclk, shared) in [
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(4, 1, "ANY","ANY", False),
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(4, 1, "ANY","NEG", False),
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(4, 1, "ANY","POS", False),
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(4, 1, "NEG","ANY", False),
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(4, 1, "NEG","POS", False),
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(4, 1, "NEG","NEG", False),
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(4, 1, "POS","ANY", False),
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(4, 1, "POS","NEG", False),
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(4, 1, "POS","POS", False),
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(4, 1, "ANY","ANY", True),
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(4, 0, "NEG","POS", True), # FF mapping
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(4, 1, "NEG","NEG", True),
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(4, 0, "POS","NEG", True), # FF mapping
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(4, 1, "POS","POS", True),
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# cannot combine "ANY" with "POS|NEG" when using shared clock
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]:
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name = f"clock_a{abits}_w{wclk}r{rclk}s{shared}"
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defs = ["WCLK_" + wclk, "RCLK_" + rclk]
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if (shared):
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defs.append("SHARED_CLK")
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TESTS.append(Test(
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name, SYNCCLOCK.format(abits=abits),
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["clock_sdp"], defs, {"RAM_CLOCK_SDP": cnt}
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))
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### mixed width testing
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# Wide write port
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MIXED_WRITE = """
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module top(clk, ra, wa, rd, wd, we);
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localparam WABITS = {wabits};
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localparam WDBITS = {wdbits};
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localparam RABITS = {rabits};
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localparam RDBITS = {rdbits};
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input wire clk;
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input wire we;
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input wire [WABITS-1:0] wa;
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input wire [WDBITS-1:0] wd;
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input wire [RABITS-1:0] ra;
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output reg [RDBITS-1:0] rd;
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localparam DEPTH = (2**WABITS);
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localparam OFFSET = RABITS-WABITS;
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(* syn_ramstyle = "block_ram" *)
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reg [WDBITS-1:0] mem [0:DEPTH-1];
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always @(posedge clk)
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if (we)
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mem[wa] <= wd;
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if (OFFSET > 0) begin
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reg [WDBITS-1:0] mem_read;
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reg [OFFSET-1:0] subaddr_r;
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always @(posedge clk) begin
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mem_read <= mem[ra[RABITS-1:OFFSET]];
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subaddr_r <= ra[OFFSET-1:0];
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end
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always @(mem_read, subaddr_r)
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rd <= mem_read[subaddr_r*RDBITS+:RDBITS];
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end
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else
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begin
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always @(posedge clk)
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case (OFFSET)
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0: rd <= mem[ra];
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-1: rd <= {{ mem[ra], mem[ra+1] }};
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endcase
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end
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endmodule
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"""
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UNMIXED = MIXED_WRITE.format(wabits=4, wdbits=9, rabits=4, rdbits=9)
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MIXED_9_18 = MIXED_WRITE.format(wabits=5, wdbits=9, rabits=4, rdbits=18)
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MIXED_18_9 = MIXED_WRITE.format(wabits=3, wdbits=18, rabits=4, rdbits=9)
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MIXED_36_9 = MIXED_WRITE.format(wabits=3, wdbits=36, rabits=5, rdbits=9)
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MIXED_4_2 = MIXED_WRITE.format(wabits=5, wdbits=4, rabits=6, rdbits=2);
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TESTS += [
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Test("unmixed", UNMIXED, ["9b1B"], [], {"RAM_9b1B":1}),
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Test("mixed_9_18", MIXED_9_18, ["9b1B"], [], {"RAM_9b1B":4}), #CHECK: only using half the memory
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Test("mixed_18_9", MIXED_18_9, ["9b1B"], [], {"RAM_9b1B":1}),
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Test("mixed_36_9", MIXED_36_9, ["9b1B"], [], {"RAM_9b1B":2}),
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Test("mixed_4_2", MIXED_4_2, ["9b1B"], [], {"RAM_9b1B":1}),
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]
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### basic TDP test
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TDP = """
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@ -131,7 +381,7 @@ TESTS += [
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]
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# shared clock
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# Synchronous SDP with clock domain crossing
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SYNC_2CLK = """
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module top(rclk, wclk, ra, wa, rd, wd, we);
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@ -163,7 +413,7 @@ TESTS += [
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]
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# inter-port transparency
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# Synchronous SDP with write-first behaviour
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SYNC_TRANS = """
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module top(clk, ra, wa, rd, wd, we);
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@ -201,7 +451,7 @@ TESTS += [
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]
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# rdwr checks
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# Synchronous single-port RAM with mutually exclusive read/write
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SP_NO_CHANGE = """
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module top(clk, addr, rd, wd, we);
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@ -247,6 +497,7 @@ end
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endmodule
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"""
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# Synchronous single-port RAM with write-first behaviour
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SP_NEW = """
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module top(clk, addr, rd, wd, we);
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@ -295,6 +546,7 @@ end
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endmodule
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"""
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# Synchronous single-port RAM with read-first behaviour
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SP_OLD = """
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module top(clk, addr, rd, wd, we);
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@ -373,6 +625,7 @@ TESTS += [
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Test("sp_old_auto_be", SP_OLD_BE, ["block_sp"], ["RDWR_NO_CHANGE", "RDWR_OLD", "RDWR_NEW"], {"RAM_BLOCK_SP": (1, {"OPTION_RDWR": "OLD"})}),
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]
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# Synchronous read port with initial value
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SP_INIT = """
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module top(clk, addr, rd, wd, we, re);
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@ -418,6 +671,7 @@ TESTS += [
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Test("sp_init_v_any_re", SP_INIT_V, ["block_sp"], ["RDINIT_ANY", "RDEN", "RDWR_OLD"], {"RAM_BLOCK_SP": 1}),
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]
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# Synchronous read port with asynchronous reset
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SP_ARST = """
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module top(clk, addr, rd, wd, we, re, ar);
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@ -488,6 +742,7 @@ TESTS += [
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Test("sp_arst_n_init_re", SP_ARST_N, ["block_sp"], ["RDINIT_ANY", "RDARST_INIT", "RDEN", "RDWR_OLD"], {"RAM_BLOCK_SP": 1}),
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]
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# Synchronous read port with synchronous reset (reset priority over enable)
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SP_SRST = """
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module top(clk, addr, rd, wd, we, re, sr);
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@ -515,6 +770,7 @@ end
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endmodule
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"""
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# Synchronous read port with synchronous reet (enable priority over reset)
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SP_SRST_G = """
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module top(clk, addr, rd, wd, we, re, sr);
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@ -602,6 +858,180 @@ TESTS += [
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Test("sp_srst_gv_init_re", SP_SRST_GV, ["block_sp"], ["RDINIT_ANY", "RDSRST_INIT", "RDEN", "RDWR_OLD"], {"RAM_BLOCK_SP": 1}),
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]
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# Byte enables, wrbe_separate
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SYNC_ENABLE = """
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module top(clk, rwa, rd, wd, we);
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localparam ABITS = {abits};
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localparam DBITS = {dbits};
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input wire clk;
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input wire we;
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input wire [ABITS-1:0] rwa;
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input wire [DBITS-1:0] wd;
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output reg [DBITS-1:0] rd;
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reg [DBITS-1:0] mem [0:2**ABITS-1];
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always @(posedge clk) begin
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if (we)
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mem[rwa] <= wd;
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else
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rd <= mem[rwa];
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end
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endmodule
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"""
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for (abits, dbits, sep, defs, cells) in [
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(4, 4, False, ["NO_BYTE"], {"RAM_WREN": 1}),
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(5, 4, False, ["NO_BYTE"], {"RAM_WREN": 2}),
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(6, 4, False, ["NO_BYTE"], {"RAM_WREN": 4}),
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# (4, 4, True, ["NO_BYTE"], {"RAM_WREN": 1}), # should throw an error
|
||||
(3, 8, False, ["NO_BYTE"], {"RAM_WREN": 2}), # needs two write ports
|
||||
(4, 8, False, ["NO_BYTE"], {"RAM_WREN": 2}),
|
||||
(4, 4, False, ["W4_B4"], {"RAM_WREN": 1}),
|
||||
(4, 8, True, ["W4_B4"], {"RAM_WREN": 2}),
|
||||
(4, 8, False, ["W8_B4"], {"RAM_WREN": 1}),
|
||||
(4, 8, True, ["W8_B4"], {"RAM_WREN": 1}),
|
||||
(4, 8, False, ["W8_B8"], {"RAM_WREN": 1}),
|
||||
(4, 8, True, ["W8_B8"], {"RAM_WREN": 1}),
|
||||
|
||||
]:
|
||||
name = f"wren_a{abits}d{dbits}_{defs[0]}"
|
||||
if (sep):
|
||||
defs.append("WRBE_SEPARATE")
|
||||
name += "_separate"
|
||||
|
||||
TESTS.append(Test(
|
||||
name, SYNC_ENABLE.format(abits=abits, dbits=dbits),
|
||||
["wren"], defs, cells
|
||||
))
|
||||
|
||||
# Write port with byte enables
|
||||
ENABLES = """
|
||||
module top(clk, we, be, rwa, wd, rd);
|
||||
|
||||
localparam ABITS = {abits};
|
||||
localparam WBITS = {wbits};
|
||||
localparam WORDS = {words};
|
||||
|
||||
input wire clk;
|
||||
input wire we;
|
||||
input wire [WORDS-1:0] be;
|
||||
input wire [ABITS-1:0] rwa;
|
||||
input wire [(WBITS*WORDS)-1:0] wd;
|
||||
output reg [(WBITS*WORDS)-1:0] rd;
|
||||
|
||||
reg [(WBITS*WORDS)-1:0] mem [0:2**ABITS-1];
|
||||
|
||||
integer i;
|
||||
always @(posedge clk)
|
||||
for (i=0; i<WORDS; i=i+1)
|
||||
if (we && be[i])
|
||||
mem[rwa][i*WBITS+:WBITS] <= wd[i*WBITS+:WBITS];
|
||||
|
||||
always @(posedge clk)
|
||||
if (!we)
|
||||
rd <= mem[rwa];
|
||||
|
||||
endmodule
|
||||
"""
|
||||
|
||||
for (abits, wbits, words, defs, cells) in [
|
||||
(4, 2, 8, ["W16_B4"], {"RAM_WREN": 2}),
|
||||
(4, 4, 4, ["W16_B4"], {"RAM_WREN": 1}),
|
||||
(5, 4, 2, ["W16_B4"], {"RAM_WREN": 1}),
|
||||
(5, 4, 4, ["W16_B4"], {"RAM_WREN": 2}),
|
||||
(4, 8, 2, ["W16_B4"], {"RAM_WREN": 1}),
|
||||
(5, 8, 1, ["W16_B4"], {"RAM_WREN": 1}),
|
||||
(5, 8, 2, ["W16_B4"], {"RAM_WREN": 2}),
|
||||
(4,16, 1, ["W16_B4"], {"RAM_WREN": 1}),
|
||||
(4, 4, 2, ["W8_B8"], {"RAM_WREN": 2}),
|
||||
(4, 4, 1, ["W8_B8"], {"RAM_WREN": 1}),
|
||||
(4, 8, 2, ["W8_B8"], {"RAM_WREN": 2}),
|
||||
(3, 8, 2, ["W8_B8"], {"RAM_WREN": 2}),
|
||||
(4, 4, 2, ["W8_B4"], {"RAM_WREN": 1}),
|
||||
(4, 2, 4, ["W8_B4"], {"RAM_WREN": 2}),
|
||||
(4, 4, 4, ["W8_B4"], {"RAM_WREN": 2}),
|
||||
(4, 4, 4, ["W4_B4"], {"RAM_WREN": 4}),
|
||||
(4, 4, 5, ["W4_B4"], {"RAM_WREN": 5}),
|
||||
|
||||
]:
|
||||
name = f"wren_a{abits}d{wbits}w{words}_{defs[0]}"
|
||||
TESTS.append(Test(
|
||||
name, ENABLES.format(abits=abits, wbits=wbits, words=words),
|
||||
["wren"], defs, cells
|
||||
))
|
||||
|
||||
defs.append("WRBE_SEPARATE")
|
||||
name += "_separate"
|
||||
TESTS.append(Test(
|
||||
name, ENABLES.format(abits=abits, wbits=wbits, words=words),
|
||||
["wren"], defs, cells
|
||||
))
|
||||
|
||||
# abits/dbits determination (aka general geometry picking)
|
||||
GEOMETRIC = """
|
||||
module top(clk, rwa, rd, wd, we);
|
||||
|
||||
localparam ABITS = {abits};
|
||||
localparam DBITS = {dbits};
|
||||
|
||||
input wire clk;
|
||||
input wire we;
|
||||
input wire [ABITS-1:0] rwa;
|
||||
input wire [DBITS-1:0] wd;
|
||||
output reg [DBITS-1:0] rd;
|
||||
|
||||
(* ram_style="block" *)
|
||||
reg [DBITS-1:0] mem [0:2**ABITS-1];
|
||||
|
||||
always @(posedge clk)
|
||||
if (we)
|
||||
mem[rwa] <= wd;
|
||||
else
|
||||
rd <= mem[rwa];
|
||||
|
||||
endmodule
|
||||
"""
|
||||
|
||||
for (abits,dbits, libs, defs, cells) in [
|
||||
# W64_B8 gives 16 * 64 = 1024 bits of memory with up to 8x8b rw ports
|
||||
( 4, 64, ["wren"], ["W64_B8"], {"RAM_WREN": 1}),
|
||||
( 5, 32, ["wren"], ["W64_B8"], {"RAM_WREN": 1}),
|
||||
( 5, 64, ["wren"], ["W64_B8"], {"RAM_WREN": 2}),
|
||||
( 6, 16, ["wren"], ["W64_B8"], {"RAM_WREN": 1}),
|
||||
( 6, 30, ["wren"], ["W64_B8"], {"RAM_WREN": 2}),
|
||||
( 6, 64, ["wren"], ["W64_B8"], {"RAM_WREN": 4}),
|
||||
( 7, 4, ["wren"], ["W64_B8"], {"RAM_WREN": 1}),
|
||||
( 7, 6, ["wren"], ["W64_B8"], {"RAM_WREN": 1}),
|
||||
( 7, 8, ["wren"], ["W64_B8"], {"RAM_WREN": 1}),
|
||||
( 7, 17, ["wren"], ["W64_B8"], {"RAM_WREN": 3}),
|
||||
( 8, 4, ["wren"], ["W64_B8"], {"RAM_WREN": 2}),
|
||||
( 8, 6, ["wren"], ["W64_B8"], {"RAM_WREN": 2}),
|
||||
( 9, 4, ["wren"], ["W64_B8"], {"RAM_WREN": 4}),
|
||||
( 9, 8, ["wren"], ["W64_B8"], {"RAM_WREN": 4}),
|
||||
( 9, 5, ["wren"], ["W64_B8"], {"RAM_WREN": 4}),
|
||||
( 9, 6, ["wren"], ["W64_B8"], {"RAM_WREN": 4}),
|
||||
# 9b1B gives 128 bits of memory with 1 2 or 4 bit read and write ports
|
||||
# or 144 bits with 9 or 18 bit read and write ports
|
||||
( 3, 18, ["9b1B"], ["INIT_NONE"], {"RAM_9b1B": 1}),
|
||||
( 4, 4, ["9b1B"], ["INIT_NONE"], {"RAM_9b1B": 1}),
|
||||
( 4, 18, ["9b1B"], ["INIT_NONE"], {"RAM_9b1B": 2}),
|
||||
( 5, 32, ["9b1B"], ["INIT_NONE"], {"RAM_9b1B": 8}),
|
||||
( 6, 4, ["9b1B"], ["INIT_NONE"], {"RAM_9b1B": 2}),
|
||||
( 7, 11, ["9b1B"], ["INIT_NONE"], {"RAM_9b1B": 11}),
|
||||
( 7, 18, ["9b1B"], ["INIT_NONE"], {"RAM_9b1B": 16}),
|
||||
( 11, 1, ["9b1B"], ["INIT_NONE"], {"RAM_9b1B": 16}),
|
||||
]:
|
||||
name = f"geom_a{abits}d{dbits}_{libs[0]}"
|
||||
TESTS.append(Test(
|
||||
name, GEOMETRIC.format(abits=abits, dbits=dbits),
|
||||
libs, defs, cells
|
||||
))
|
||||
|
||||
# Mixed width testing
|
||||
WIDE_SDP = """
|
||||
module top(rclk, ra, rd, re, rr, wclk, wa, wd, we);
|
||||
|
||||
|
|
@ -857,6 +1287,233 @@ for (aw, rw, ww, bw, cntww, cntwr) in [
|
|||
{"RAM_WIDE_WRITE": cntww}
|
||||
))
|
||||
|
||||
# Multiple read ports
|
||||
# 1rw port plus 3 (or 7) r ports
|
||||
QUAD_PORT = """
|
||||
module top(clk, rwa, r0a, r1a, r2a, rd, r0d, r1d, r2d, wd, we);
|
||||
|
||||
localparam ABITS = {abits};
|
||||
localparam DBITS = {dbits};
|
||||
|
||||
input wire clk;
|
||||
input wire we;
|
||||
input wire [ABITS-1:0] rwa;
|
||||
input wire [ABITS-1:0] r0a;
|
||||
input wire [ABITS-1:0] r1a;
|
||||
input wire [ABITS-1:0] r2a;
|
||||
input wire [DBITS-1:0] wd;
|
||||
output wire [DBITS-1:0] rd;
|
||||
output wire [DBITS-1:0] r0d;
|
||||
output wire [DBITS-1:0] r1d;
|
||||
output wire [DBITS-1:0] r2d;
|
||||
|
||||
reg [DBITS-1:0] mem [0:2**ABITS-1];
|
||||
|
||||
always @(posedge clk)
|
||||
if (we)
|
||||
mem[rwa] <= wd;
|
||||
|
||||
assign rd = mem[rwa];
|
||||
assign r0d = mem[r0a];
|
||||
assign r1d = mem[r1a];
|
||||
assign r2d = mem[r2a];
|
||||
|
||||
endmodule
|
||||
"""
|
||||
|
||||
for (abits, dbits, cnt) in [
|
||||
(2, 2, 1),
|
||||
(4, 2, 1),
|
||||
(5, 2, 2),
|
||||
(4, 4, 2),
|
||||
(6, 2, 4),
|
||||
(4, 8, 4),
|
||||
]:
|
||||
TESTS.append(Test(
|
||||
f"quad_port_a{abits}d{dbits}",
|
||||
QUAD_PORT.format(abits=abits, dbits=dbits),
|
||||
["multilut"], ["PORTS_QUAD"],
|
||||
{"LUT_MULTI": cnt}
|
||||
))
|
||||
|
||||
# Wide asynchronous read port
|
||||
WIDE_READ = """
|
||||
module top(clk, we, rwa, wd, rd);
|
||||
|
||||
localparam ABITS = {abits};
|
||||
localparam WBITS = {wbits};
|
||||
localparam RWORDS = {rwords};
|
||||
|
||||
input wire clk;
|
||||
input wire we;
|
||||
input wire [ABITS-1:0] rwa;
|
||||
input wire [WBITS-1:0] wd;
|
||||
output wire [(WBITS*RWORDS)-1:0] rd;
|
||||
|
||||
reg [WBITS-1:0] mem [0:2**ABITS-1];
|
||||
|
||||
always @(posedge clk)
|
||||
if (we)
|
||||
mem[rwa] <= wd;
|
||||
|
||||
genvar i;
|
||||
generate
|
||||
for (i = 0; i < RWORDS; i = i + 1)
|
||||
assign rd[i*WBITS+:WBITS] = mem[rwa + i];
|
||||
endgenerate
|
||||
|
||||
endmodule
|
||||
"""
|
||||
|
||||
for (abits, wbits, rwords, cntquad, cntoct) in [
|
||||
(4, 2, 1, 1, 1),
|
||||
(4, 2, 2, 1, 1),
|
||||
(4, 2, 3, 1, 1),
|
||||
(4, 2, 4, 1, 1),
|
||||
(4, 2, 5, 2, 1),
|
||||
(4, 2, 6, 2, 1),
|
||||
(4, 2, 7, 2, 1), # Write port needs to be duplicated, so only 3 extra read
|
||||
(4, 2, 8, 3, 1), # ports per quad port LUT (i.e. 7 ports in 2, 8 ports in 3)
|
||||
(4, 2, 9, 3, 2),
|
||||
(4, 4, 1, 2, 2),
|
||||
(4, 4, 4, 2, 2),
|
||||
(4, 4, 6, 4, 2),
|
||||
(4, 4, 9, 6, 4),
|
||||
(5, 2, 1, 2, 2),
|
||||
(5, 2, 4, 2, 2),
|
||||
(5, 2, 9, 6, 4),
|
||||
]:
|
||||
TESTS.append(Test(
|
||||
f"wide_quad_a{abits}w{wbits}r{rwords}",
|
||||
WIDE_READ.format(abits=abits, wbits=wbits, rwords=rwords),
|
||||
["multilut"], ["PORTS_QUAD"],
|
||||
{"LUT_MULTI": cntquad}
|
||||
))
|
||||
TESTS.append(Test(
|
||||
f"wide_oct_a{abits}w{wbits}r{rwords}",
|
||||
WIDE_READ.format(abits=abits, wbits=wbits, rwords=rwords),
|
||||
["multilut"], ["PORTS_OCT"],
|
||||
{"LUT_MULTI": cntoct}
|
||||
))
|
||||
|
||||
# signal priorities & pattern testing
|
||||
PRIORITY = """
|
||||
module top(clk, clken, wren, wben, rden, rst, addr, wdata, rdata);
|
||||
|
||||
localparam ABITS = {abits};
|
||||
localparam WBITS = {wbits};
|
||||
localparam WORDS = {words};
|
||||
|
||||
localparam BITS = WBITS * WORDS;
|
||||
|
||||
input wire clk, clken;
|
||||
input wire wren, rden, rst;
|
||||
input wire [WORDS-1:0] wben;
|
||||
input wire [ABITS-1:0] addr;
|
||||
input wire [BITS-1:0] wdata;
|
||||
output reg [BITS-1:0] rdata;
|
||||
|
||||
reg [BITS-1:0] mem [0:2**ABITS-1];
|
||||
|
||||
integer i;
|
||||
always @(posedge clk) begin
|
||||
{code}
|
||||
end
|
||||
endmodule
|
||||
"""
|
||||
#reset_gate in ["ungated", "rst", "rden && rst"]
|
||||
#clk_en in [True, False]
|
||||
#rdwr in ["nc", "old", "new", "undef", "newdef"]
|
||||
|
||||
for (testname, reset_gate, rdwr, clk_en, add_logic) in [
|
||||
("no_reset", "", "old", False, 0),
|
||||
("gclken", "rst", "old", False, 0),
|
||||
("ungated", "ungated", "old", False, 1), # muxes wren with rst
|
||||
("gclken_ce", "rst", "old", True, 3), # AND to simulate CLK_EN
|
||||
("grden", "rden && rst", "old", False, 1), # selects _clken, simulates _rden
|
||||
("grden_ce", "rden && rst", "old", True, 4), # both of the above
|
||||
("exclwr", "", "nc", False, 2), # selects new_only and simulates
|
||||
("excl_rst", "rst", "nc", False, 3), # as above, extra gate for rst
|
||||
("transwr", "", "new", False, 0),
|
||||
("trans_rst", "rst", "new", False, 0),
|
||||
]:
|
||||
write = "if (wren) \n\t\tmem[addr] <= wdata;"
|
||||
|
||||
if rdwr == "new":
|
||||
read = """if (rden)
|
||||
if (wren)
|
||||
rdata <= wdata;
|
||||
else
|
||||
rdata <= mem[addr];"""
|
||||
else:
|
||||
read = "if (rden) \n\t\trdata <= mem[addr];"
|
||||
|
||||
if "rst" in reset_gate:
|
||||
read = f"if ({reset_gate})\n\t\trdata <= 0; \n\telse {read}"
|
||||
|
||||
if reset_gate == "ungated":
|
||||
outer = "if (rst)\n\trdata <= 0;\nelse "
|
||||
else:
|
||||
outer = ""
|
||||
|
||||
if clk_en:
|
||||
outer = f"{outer}if (clken) "
|
||||
|
||||
code = f"""{outer}begin
|
||||
{write}
|
||||
{"else " if rdwr == "nc" else ""}{read}
|
||||
end"""
|
||||
|
||||
TESTS.append(Test(
|
||||
testname, PRIORITY.format(code=code, abits=4, wbits=8, words=2),
|
||||
["block_sp_full"], ["USE_SRST"],
|
||||
{"RAM_BLOCK_SP": 1, "$*": add_logic}
|
||||
))
|
||||
|
||||
for (testname, reset_gate, defs, rdwr, add_logic) in [
|
||||
("wr_byte", "", ["USE_SRST_BLOCKING"], "old", 0),
|
||||
("trans_byte", "", ["USE_SRST_BLOCKING"], "new", 0),
|
||||
("wr_rst_byte", "rst", ["USE_SRST"], "old", 2), # expected mux to emulate blocking
|
||||
("rst_wr_byte", "rst", ["USE_SRST_BLOCKING"], "old", 2), # should use hardware blocking, doesn't
|
||||
("rdenrst_wr_byte", "rden && rst", ["USE_SRST"], "old", 3),
|
||||
]:
|
||||
wordsloop = "for (i=0; i<WORDS; i=i+1)"
|
||||
if rdwr == "old":
|
||||
read_write = f"""if (rden)
|
||||
rdata = mem[addr];
|
||||
{wordsloop}
|
||||
if (wben[i])
|
||||
mem[addr][i] <= wdata[i];"""
|
||||
else:
|
||||
read_write = f"""{wordsloop}
|
||||
if (wben[i]) begin
|
||||
mem[addr][i] <= wdata[i];
|
||||
rdata[i] <= wdata[i];
|
||||
end else
|
||||
rdata[i] <= mem[addr][i];"""
|
||||
|
||||
if "rst" in reset_gate:
|
||||
reset_rw = f"""if ({reset_gate})
|
||||
rdata <= 0;
|
||||
else begin
|
||||
{read_write}
|
||||
end"""
|
||||
else:
|
||||
reset_rw = read_write
|
||||
|
||||
if reset_gate == "ungated":
|
||||
outer = "if (rst)\n\trdata <= 0;\nelse "
|
||||
else:
|
||||
outer = ""
|
||||
|
||||
code = f"{outer}\n{reset_rw}"
|
||||
|
||||
TESTS.append(Test(
|
||||
testname, PRIORITY.format(code=code, abits=4, wbits=1, words=2),
|
||||
["block_sp_full"], defs,
|
||||
{"RAM_BLOCK_SP": 1, "$*": add_logic}
|
||||
))
|
||||
|
||||
with open("run-test.mk", "w") as mf:
|
||||
mf.write("ifneq ($(strip $(SEED)),)\n")
|
||||
mf.write("SEEDOPT=-S$(SEED)\n")
|
||||
|
|
|
|||
Loading…
Add table
Add a link
Reference in a new issue