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Progress in bram testbench

This commit is contained in:
Clifford Wolf 2015-01-02 17:50:15 +01:00
parent 1bd67d792e
commit 03b3c02540
1 changed files with 28 additions and 11 deletions
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39
tests/bram/generate.py
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@ -3,34 +3,35 @@
from __future__ import division from __future__ import division
from __future__ import print_function from __future__ import print_function
import os
import sys import sys
import random import random
debug_mode = False debug_mode = False
seed = os.getpid()
def create_bram(dsc_f, sim_f, ref_f, tb_f, k1, k2): def create_bram(dsc_f, sim_f, ref_f, tb_f, k1, k2):
while True: while True:
init = random.randrange(2) init = random.randrange(2)
abits = random.randrange(1, 8) abits = random.randrange(1, 8)
dbits = random.randrange(1, 8) dbits = random.randrange(1, 8)
groups = random.randrange(1, 5) groups = random.randrange(2, 5)
if random.randrange(2): if random.randrange(2):
abits = 2 ** random.randrange(1, 4) abits = 2 ** random.randrange(1, 4)
if random.randrange(2): if random.randrange(2):
dbits = 2 ** random.randrange(1, 4) dbits = 2 ** random.randrange(1, 4)
ports = [ random.randrange(3) for i in range(groups) ] ports = [ random.randrange(1, 3) for i in range(groups) ]
wrmode = [ random.randrange(2) for i in range(groups) ] wrmode = [ random.randrange(0, 2) for i in range(groups) ]
enable = [ random.randrange(4) for i in range(groups) ] enable = [ random.randrange(0, 4) for i in range(groups) ]
transp = [ random.randrange(4) for i in range(groups) ] transp = [ random.randrange(0, 4) for i in range(groups) ]
clocks = [ random.randrange(4) for i in range(groups) ] clocks = [ random.randrange(1, 4) for i in range(groups) ]
clkpol = [ random.randrange(4) for i in range(groups) ] clkpol = [ random.randrange(0, 4) for i in range(groups) ]
# XXX # XXX
init = 0 init = 0
transp = [ 0 for i in range(groups) ] transp = [ 0 for i in range(groups) ]
clocks = [ 1 for i in range(groups) ]
clkpol = [ 1 for i in range(groups) ] clkpol = [ 1 for i in range(groups) ]
for p1 in range(groups): for p1 in range(groups):
@ -42,8 +43,9 @@ def create_bram(dsc_f, sim_f, ref_f, tb_f, k1, k2):
enable[p1] //= 2 enable[p1] //= 2
config_ok = True config_ok = True
if wrmode.count(1) <= ports.count(0): config_ok = False if sum(ports) > 3: config_ok = False # XXX
if wrmode.count(0) <= ports.count(0): config_ok = False if wrmode.count(1) == 0: config_ok = False
if wrmode.count(0) == 0: config_ok = False
if config_ok: break if config_ok: break
print("bram bram_%02d_%02d" % (k1, k2), file=dsc_f) print("bram bram_%02d_%02d" % (k1, k2), file=dsc_f)
@ -82,9 +84,12 @@ def create_bram(dsc_f, sim_f, ref_f, tb_f, k1, k2):
v_stmts.append("(* nomem2reg *) reg [%d:0] memory [0:%d];" % (dbits-1, 2**abits-1)) v_stmts.append("(* nomem2reg *) reg [%d:0] memory [0:%d];" % (dbits-1, 2**abits-1))
portindex = 0
for p1 in range(groups): for p1 in range(groups):
for p2 in range(ports[p1]): for p2 in range(ports[p1]):
pf = "%c%d" % (chr(ord("A") + p1), p2 + 1) pf = "%c%d" % (chr(ord("A") + p1), p2 + 1)
portindex += 1
if clocks[p1] and not ("CLK%d" % clocks[p1]) in v_ports: if clocks[p1] and not ("CLK%d" % clocks[p1]) in v_ports:
v_ports.add("CLK%d" % clocks[p1]) v_ports.add("CLK%d" % clocks[p1])
@ -133,6 +138,8 @@ def create_bram(dsc_f, sim_f, ref_f, tb_f, k1, k2):
if not always_hdr in v_always: if not always_hdr in v_always:
v_always[always_hdr] = [list(), list(), list()] v_always[always_hdr] = [list(), list(), list()]
v_always[always_hdr][1].append("`delay(%d)" % portindex);
v_always[always_hdr][2].append("`delay(%d)" % (sum(ports)-portindex+1));
if wrmode[p1]: if wrmode[p1]:
for i in range(enable[p1]): for i in range(enable[p1]):
@ -195,7 +202,7 @@ def create_bram(dsc_f, sim_f, ref_f, tb_f, k1, k2):
print(" %s = %d;" % (p, v), file=tb_f) print(" %s = %d;" % (p, v), file=tb_f)
print(" #1000;", file=tb_f) print(" #1000;", file=tb_f)
for i in range(100): for i in range(20 if debug_mode else 100):
if len(tb_clocks): if len(tb_clocks):
c = random.choice(tb_clocks) c = random.choice(tb_clocks)
print(" %s = !%s;" % (c, c), file=tb_f) print(" %s = !%s;" % (c, c), file=tb_f)
@ -211,6 +218,9 @@ def create_bram(dsc_f, sim_f, ref_f, tb_f, k1, k2):
print(" end", file=tb_f) print(" end", file=tb_f)
print("endmodule", file=tb_f) print("endmodule", file=tb_f)
print("Rng seed: %d" % seed)
random.seed(seed)
for k1 in range(5): for k1 in range(5):
dsc_f = file("temp/brams_%02d.txt" % k1, "w"); dsc_f = file("temp/brams_%02d.txt" % k1, "w");
sim_f = file("temp/brams_%02d.v" % k1, "w"); sim_f = file("temp/brams_%02d.v" % k1, "w");
@ -220,6 +230,13 @@ for k1 in range(5):
for f in [sim_f, ref_f, tb_f]: for f in [sim_f, ref_f, tb_f]:
print("`timescale 1 ns / 1 ns", file=f) print("`timescale 1 ns / 1 ns", file=f)
for f in [sim_f, ref_f]:
print("`ifdef SYNTHESIS", file=f)
print(" `define delay(n)", file=f)
print("`else", file=f)
print(" `define delay(n) #n;", file=f)
print("`endif", file=f)
for k2 in range(1 if debug_mode else 10): for k2 in range(1 if debug_mode else 10):
create_bram(dsc_f, sim_f, ref_f, tb_f, k1, k2) create_bram(dsc_f, sim_f, ref_f, tb_f, k1, k2)