288 lines
11 KiB
Python
288 lines
11 KiB
Python
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#!/usr/bin/env python3
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import argparse
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import os
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import sys
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import random
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debug_mode = False
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def create_bram(dsc_f, sim_f, ref_f, tb_f, k1, k2, or_next):
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while True:
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init = 0 # random.randrange(2)
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abits = random.randrange(1, 8)
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dbits = random.randrange(1, 8)
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groups = random.randrange(2, 5)
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if random.randrange(2):
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abits = 2 ** random.randrange(1, 4)
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if random.randrange(2):
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dbits = 2 ** random.randrange(1, 4)
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while True:
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wrmode = [ random.randrange(0, 2) for i in range(groups) ]
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if wrmode.count(1) == 0: continue
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if wrmode.count(0) == 0: continue
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break
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if random.randrange(2):
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maxpol = 4
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maxtransp = 1
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maxclocks = 4
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else:
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maxpol = None
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clkpol = random.randrange(4)
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maxtransp = 2
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maxclocks = 1
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def generate_enable(i):
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if wrmode[i]:
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v = 2 ** random.randrange(0, 4)
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while dbits < v or dbits % v != 0:
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v //= 2
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return v
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return 0
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def generate_transp(i):
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if wrmode[i] == 0:
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return random.randrange(maxtransp)
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return 0
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def generate_clkpol(i):
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if maxpol is None:
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return clkpol
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return random.randrange(maxpol)
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ports = [ random.randrange(1, 3) for i in range(groups) ]
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enable = [ generate_enable(i) for i in range(groups) ]
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transp = [ generate_transp(i) for i in range(groups) ]
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clocks = [ random.randrange(maxclocks)+1 for i in range(groups) ]
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clkpol = [ generate_clkpol(i) for i in range(groups) ]
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break
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print("bram bram_%02d_%02d" % (k1, k2), file=dsc_f)
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print(" init %d" % init, file=dsc_f)
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print(" abits %d" % abits, file=dsc_f)
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print(" dbits %d" % dbits, file=dsc_f)
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print(" groups %d" % groups, file=dsc_f)
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print(" ports %s" % " ".join(["%d" % i for i in ports]), file=dsc_f)
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print(" wrmode %s" % " ".join(["%d" % i for i in wrmode]), file=dsc_f)
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print(" enable %s" % " ".join(["%d" % i for i in enable]), file=dsc_f)
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print(" transp %s" % " ".join(["%d" % i for i in transp]), file=dsc_f)
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print(" clocks %s" % " ".join(["%d" % i for i in clocks]), file=dsc_f)
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print(" clkpol %s" % " ".join(["%d" % i for i in clkpol]), file=dsc_f)
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print("endbram", file=dsc_f)
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print("match bram_%02d_%02d" % (k1, k2), file=dsc_f)
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if random.randrange(2):
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non_zero_enables = [chr(ord('A') + i) for i in range(len(enable)) if enable[i]]
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if len(non_zero_enables):
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print(" shuffle_enable %c" % random.choice(non_zero_enables), file=dsc_f)
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if or_next:
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print(" or_next_if_better", file=dsc_f)
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print("endmatch", file=dsc_f)
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states = set()
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v_ports = set()
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v_stmts = list()
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v_always = dict()
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tb_decls = list()
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tb_clocks = list()
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tb_addr = list()
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tb_din = list()
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tb_dout = list()
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tb_addrlist = list()
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for i in range(10):
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tb_addrlist.append(random.randrange(1048576))
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t = random.randrange(1048576)
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for i in range(10):
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tb_addrlist.append(t ^ (1 << i))
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v_stmts.append("(* nomem2reg *) reg [%d:0] memory [0:%d];" % (dbits-1, 2**abits-1))
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portindex = 0
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last_always_hdr = (-1, "")
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for p1 in range(groups):
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for p2 in range(ports[p1]):
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pf = "%c%d" % (chr(ord("A") + p1), p2 + 1)
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portindex += 1
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v_stmts.append("`ifndef SYNTHESIS")
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v_stmts.append(" event UPDATE_%s;" % pf)
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v_stmts.append("`endif")
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if clocks[p1] and not ("CLK%d" % clocks[p1]) in v_ports:
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v_ports.add("CLK%d" % clocks[p1])
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v_stmts.append("input CLK%d;" % clocks[p1])
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tb_decls.append("reg CLK%d = 0;" % clocks[p1])
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tb_clocks.append("CLK%d" % clocks[p1])
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v_ports.add("%sADDR" % pf)
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v_stmts.append("input [%d:0] %sADDR;" % (abits-1, pf))
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if transp[p1]:
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v_stmts.append("reg [%d:0] %sADDR_Q;" % (abits-1, pf))
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tb_decls.append("reg [%d:0] %sADDR;" % (abits-1, pf))
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tb_addr.append("%sADDR" % pf)
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v_ports.add("%sDATA" % pf)
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v_stmts.append("%s [%d:0] %sDATA;" % ("input" if wrmode[p1] else "output reg", dbits-1, pf))
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if wrmode[p1]:
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tb_decls.append("reg [%d:0] %sDATA;" % (dbits-1, pf))
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tb_din.append("%sDATA" % pf)
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else:
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tb_decls.append("wire [%d:0] %sDATA;" % (dbits-1, pf))
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tb_decls.append("wire [%d:0] %sDATA_R;" % (dbits-1, pf))
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tb_dout.append("%sDATA" % pf)
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if wrmode[p1] and enable[p1]:
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v_ports.add("%sEN" % pf)
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v_stmts.append("input [%d:0] %sEN;" % (enable[p1]-1, pf))
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tb_decls.append("reg [%d:0] %sEN;" % (enable[p1]-1, pf))
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tb_din.append("%sEN" % pf)
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assign_op = "<="
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if clocks[p1] == 0:
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always_hdr = "always @* begin"
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assign_op = "="
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elif clkpol[p1] == 0:
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always_hdr = "always @(negedge CLK%d) begin" % clocks[p1]
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elif clkpol[p1] == 1:
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always_hdr = "always @(posedge CLK%d) begin" % clocks[p1]
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else:
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if not ("CP", clkpol[p1]) in states:
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v_stmts.append("parameter CLKPOL%d = 0;" % clkpol[p1])
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states.add(("CP", clkpol[p1]))
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if not ("CPW", clocks[p1], clkpol[p1]) in states:
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v_stmts.append("wire CLK%d_CLKPOL%d = CLK%d == CLKPOL%d;" % (clocks[p1], clkpol[p1], clocks[p1], clkpol[p1]))
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states.add(("CPW", clocks[p1], clkpol[p1]))
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always_hdr = "always @(posedge CLK%d_CLKPOL%d) begin" % (clocks[p1], clkpol[p1])
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if last_always_hdr[1] != always_hdr:
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last_always_hdr = (portindex, always_hdr)
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v_always[last_always_hdr] = list()
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if wrmode[p1]:
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for i in range(enable[p1]):
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enrange = "[%d:%d]" % ((i+1)*dbits/enable[p1]-1, i*dbits/enable[p1])
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v_always[last_always_hdr].append((portindex, pf, "if (%sEN[%d]) memory[%sADDR]%s = %sDATA%s;" % (pf, i, pf, enrange, pf, enrange)))
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elif transp[p1]:
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v_always[last_always_hdr].append((sum(ports)+1, pf, "%sADDR_Q %s %sADDR;" % (pf, assign_op, pf)))
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v_stmts.append("always @* %sDATA = memory[%sADDR_Q];" % (pf, pf))
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else:
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v_always[last_always_hdr].append((0, pf, "%sDATA %s memory[%sADDR];" % (pf, assign_op, pf)))
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for always_hdr in sorted(v_always):
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v_stmts.append(always_hdr[1])
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triggered_events = set()
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time_cursor = 0
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v_always[always_hdr].sort()
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for t, p, s in v_always[always_hdr]:
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if time_cursor != t or not p in triggered_events:
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v_stmts.append(" `ifndef SYNTHESIS")
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stmt = ""
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if time_cursor != t:
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stmt += " #%d;" % (t-time_cursor)
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time_cursor = t
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if not p in triggered_events:
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stmt += (" -> UPDATE_%s;" % p)
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triggered_events.add(p)
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v_stmts.append(" %s" % stmt)
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v_stmts.append(" `endif")
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v_stmts.append(" %s" % s)
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v_stmts.append("end")
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print("module bram_%02d_%02d(%s);" % (k1, k2, ", ".join(v_ports)), file=sim_f)
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for stmt in v_stmts:
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print(" %s" % stmt, file=sim_f)
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print("endmodule", file=sim_f)
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print("module bram_%02d_%02d_ref(%s);" % (k1, k2, ", ".join(v_ports)), file=ref_f)
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for stmt in v_stmts:
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print(" %s" % stmt, file=ref_f)
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print("endmodule", file=ref_f)
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print("module bram_%02d_%02d_tb;" % (k1, k2), file=tb_f)
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for stmt in tb_decls:
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print(" %s" % stmt, file=tb_f)
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print(" bram_%02d_%02d uut (" % (k1, k2), file=tb_f)
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print(" " + ",\n ".join([".%s(%s)" % (p, p) for p in (tb_clocks + tb_addr + tb_din + tb_dout)]), file=tb_f)
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print(" );", file=tb_f)
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print(" bram_%02d_%02d_ref ref (" % (k1, k2), file=tb_f)
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print(" " + ",\n ".join([".%s(%s)" % (p, p) for p in (tb_clocks + tb_addr + tb_din)]) + ",", file=tb_f)
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print(" " + ",\n ".join([".%s(%s_R)" % (p, p) for p in tb_dout]), file=tb_f)
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print(" );", file=tb_f)
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expr_dout = "{%s}" % ", ".join(tb_dout)
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expr_dout_ref = "{%s}" % ", ".join(i + "_R" for i in tb_dout)
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print(" wire error = %s !== %s;" % (expr_dout, expr_dout_ref), file=tb_f)
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print(" initial begin", file=tb_f)
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if debug_mode:
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print(" $dumpfile(`vcd_file);", file=tb_f)
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print(" $dumpvars(0, bram_%02d_%02d_tb);" % (k1, k2), file=tb_f)
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print(" #%d;" % (1000 + k2), file=tb_f)
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for p in (tb_clocks + tb_addr + tb_din):
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if p[-2:] == "EN":
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print(" %s <= ~0;" % p, file=tb_f)
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else:
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print(" %s <= 0;" % p, file=tb_f)
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print(" #1000;", file=tb_f)
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for v in [1, 0, 1, 0]:
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for p in tb_clocks:
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print(" %s = %d;" % (p, v), file=tb_f)
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print(" #1000;", file=tb_f)
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for i in range(20 if debug_mode else 100):
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if len(tb_clocks):
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c = random.choice(tb_clocks)
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print(" %s = !%s;" % (c, c), file=tb_f)
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print(" #100;", file=tb_f)
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print(" $display(\"bram_%02d_%02d %3d: %%b %%b %%s\", %s, %s, error ? \"ERROR\" : \"OK\");" %
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(k1, k2, i, expr_dout, expr_dout_ref), file=tb_f)
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for p in tb_din:
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print(" %s <= %d;" % (p, random.randrange(1048576)), file=tb_f)
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for p in tb_addr:
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print(" %s <= %d;" % (p, random.choice(tb_addrlist)), file=tb_f)
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print(" #900;", file=tb_f)
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print(" end", file=tb_f)
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print("endmodule", file=tb_f)
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parser = argparse.ArgumentParser(formatter_class = argparse.ArgumentDefaultsHelpFormatter)
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parser.add_argument('-S', '--seed', type = int, help = 'seed for PRNG')
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parser.add_argument('-c', '--count', type = int, default = 5, help = 'number of test cases to generate')
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parser.add_argument('-d', '--debug', action='store_true')
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args = parser.parse_args()
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debug_mode = args.debug
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if args.seed is not None:
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seed = args.seed
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else:
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seed = (int(os.times()[4]*100) + os.getpid()) % 900000 + 100000
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print("PRNG seed: %d" % seed)
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random.seed(seed)
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for k1 in range(args.count):
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dsc_f = open("temp/brams_%02d.txt" % k1, "w")
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sim_f = open("temp/brams_%02d.v" % k1, "w")
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ref_f = open("temp/brams_%02d_ref.v" % k1, "w")
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tb_f = open("temp/brams_%02d_tb.v" % k1, "w")
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for f in [sim_f, ref_f, tb_f]:
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print("`timescale 1 ns / 1 ns", file=f)
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lenk2 = 1 if debug_mode else 10
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for k2 in range(lenk2):
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create_bram(dsc_f, sim_f, ref_f, tb_f, k1, k2, random.randrange(2 if k2+1 < lenk2 else 1))
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