#!/usr/bin/python from __future__ import division from __future__ import print_function import os import sys import random debug_mode = False seed = (int(os.times()[4]*100) + os.getpid()) % 900000 + 100000 def create_bram(dsc_f, sim_f, ref_f, tb_f, k1, k2, or_next): while True: init = 0 # random.randrange(2) abits = random.randrange(1, 8) dbits = random.randrange(1, 8) groups = random.randrange(2, 5) if random.randrange(2): abits = 2 ** random.randrange(1, 4) if random.randrange(2): dbits = 2 ** random.randrange(1, 4) while True: wrmode = [ random.randrange(0, 2) for i in range(groups) ] if wrmode.count(1) == 0: continue if wrmode.count(0) == 0: continue break if random.randrange(2) or True: maxpol = 4 maxtransp = 1 else: maxpol = 2 maxtransp = 2 def generate_enable(i): if wrmode[i]: v = 2 ** random.randrange(0, 4) while dbits < v or dbits % v != 0: v //= 2 return v return 0 def generate_transp(i): if wrmode[i] == 0: return random.randrange(maxtransp) return 0 ports = [ random.randrange(1, 3) for i in range(groups) ] enable = [ generate_enable(i) for i in range(groups) ] transp = [ generate_transp(i) for i in range(groups) ] clocks = [ random.randrange(1, 4) for i in range(groups) ] clkpol = [ random.randrange(maxpol) for i in range(groups) ] break print("bram bram_%02d_%02d" % (k1, k2), file=dsc_f) print(" init %d" % init, file=dsc_f) print(" abits %d" % abits, file=dsc_f) print(" dbits %d" % dbits, file=dsc_f) print(" groups %d" % groups, file=dsc_f) print(" ports %s" % " ".join(["%d" % i for i in ports]), file=dsc_f) print(" wrmode %s" % " ".join(["%d" % i for i in wrmode]), file=dsc_f) print(" enable %s" % " ".join(["%d" % i for i in enable]), file=dsc_f) print(" transp %s" % " ".join(["%d" % i for i in transp]), file=dsc_f) print(" clocks %s" % " ".join(["%d" % i for i in clocks]), file=dsc_f) print(" clkpol %s" % " ".join(["%d" % i for i in clkpol]), file=dsc_f) print("endbram", file=dsc_f) print("match bram_%02d_%02d" % (k1, k2), file=dsc_f) if or_next: print(" or_next_if_better", file=dsc_f) print("endmatch", file=dsc_f) states = set() v_ports = set() v_stmts = list() v_always = dict() tb_decls = list() tb_clocks = list() tb_addr = list() tb_din = list() tb_dout = list() tb_addrlist = list() for i in range(10): tb_addrlist.append(random.randrange(1048576)) t = random.randrange(1048576) for i in range(10): tb_addrlist.append(t ^ (1 << i)) v_stmts.append("(* nomem2reg *) reg [%d:0] memory [0:%d];" % (dbits-1, 2**abits-1)) portindex = 0 last_always_hdr = (-1, "") for p1 in range(groups): for p2 in range(ports[p1]): pf = "%c%d" % (chr(ord("A") + p1), p2 + 1) portindex += 1 v_stmts.append("`ifndef SYNTHESIS") v_stmts.append(" event UPDATE_%s;" % pf) v_stmts.append("`endif") if clocks[p1] and not ("CLK%d" % clocks[p1]) in v_ports: v_ports.add("CLK%d" % clocks[p1]) v_stmts.append("input CLK%d;" % clocks[p1]) tb_decls.append("reg CLK%d;" % clocks[p1]) tb_clocks.append("CLK%d" % clocks[p1]) v_ports.add("%sADDR" % pf) v_stmts.append("input [%d:0] %sADDR;" % (abits-1, pf)) tb_decls.append("reg [%d:0] %sADDR;" % (abits-1, pf)) tb_addr.append("%sADDR" % pf) v_ports.add("%sDATA" % pf) v_stmts.append("%s [%d:0] %sDATA;" % ("input" if wrmode[p1] else "output reg", dbits-1, pf)) if wrmode[p1]: tb_decls.append("reg [%d:0] %sDATA;" % (dbits-1, pf)) tb_din.append("%sDATA" % pf) else: tb_decls.append("wire [%d:0] %sDATA;" % (dbits-1, pf)) tb_decls.append("wire [%d:0] %sDATA_R;" % (dbits-1, pf)) tb_dout.append("%sDATA" % pf) if wrmode[p1] and enable[p1]: v_ports.add("%sEN" % pf) v_stmts.append("input [%d:0] %sEN;" % (enable[p1]-1, pf)) tb_decls.append("reg [%d:0] %sEN;" % (enable[p1]-1, pf)) tb_din.append("%sEN" % pf) assign_op = "<=" if clocks[p1] == 0: always_hdr = "always @* begin" assign_op = "=" elif clkpol[p1] == 0: always_hdr = "always @(negedge CLK%d) begin" % clocks[p1] elif clkpol[p1] == 1: always_hdr = "always @(posedge CLK%d) begin" % clocks[p1] else: if not ("CP", clkpol[p1]) in states: v_stmts.append("parameter CLKPOL%d = 0;" % clkpol[p1]) states.add(("CP", clkpol[p1])) if not ("CPW", clocks[p1], clkpol[p1]) in states: v_stmts.append("wire CLK%d_CLKPOL%d = CLK%d == CLKPOL%d;" % (clocks[p1], clkpol[p1], clocks[p1], clkpol[p1])) states.add(("CPW", clocks[p1], clkpol[p1])) always_hdr = "always @(posedge CLK%d_CLKPOL%d) begin" % (clocks[p1], clkpol[p1]) if last_always_hdr[1] != always_hdr: last_always_hdr = (portindex, always_hdr) v_always[last_always_hdr] = list() if wrmode[p1]: for i in range(enable[p1]): enrange = "[%d:%d]" % ((i+1)*dbits/enable[p1]-1, i*dbits/enable[p1]) v_always[last_always_hdr].append((portindex, pf, "if (%sEN[%d]) memory[%sADDR]%s = %sDATA%s;" % (pf, i, pf, enrange, pf, enrange))) else: v_always[last_always_hdr].append((sum(ports)+1 if transp[p1] else 0, pf, "%sDATA %s memory[%sADDR];" % (pf, assign_op, pf))) for always_hdr in sorted(v_always): v_stmts.append(always_hdr[1]) triggered_events = set() time_cursor = 0 v_always[always_hdr].sort() for t, p, s in v_always[always_hdr]: if time_cursor != t or not p in triggered_events: v_stmts.append(" `ifndef SYNTHESIS") stmt = "" if time_cursor != t: stmt += " #%d;" % (t-time_cursor) time_cursor = t if not p in triggered_events: stmt += (" -> UPDATE_%s;" % p) triggered_events.add(p) v_stmts.append(" %s" % stmt) v_stmts.append(" `endif") v_stmts.append(" %s" % s) v_stmts.append("end") print("module bram_%02d_%02d(%s);" % (k1, k2, ", ".join(v_ports)), file=sim_f) for stmt in v_stmts: print(" %s" % stmt, file=sim_f) print("endmodule", file=sim_f) print("module bram_%02d_%02d_ref(%s);" % (k1, k2, ", ".join(v_ports)), file=ref_f) for stmt in v_stmts: print(" %s" % stmt, file=ref_f) print("endmodule", file=ref_f) print("module bram_%02d_%02d_tb;" % (k1, k2), file=tb_f) for stmt in tb_decls: print(" %s" % stmt, file=tb_f) print(" bram_%02d_%02d uut (" % (k1, k2), file=tb_f) print(" " + ",\n ".join([".%s(%s)" % (p, p) for p in (tb_clocks + tb_addr + tb_din + tb_dout)]), file=tb_f) print(" );", file=tb_f) print(" bram_%02d_%02d_ref ref (" % (k1, k2), file=tb_f) print(" " + ",\n ".join([".%s(%s)" % (p, p) for p in (tb_clocks + tb_addr + tb_din)]) + ",", file=tb_f) print(" " + ",\n ".join([".%s(%s_R)" % (p, p) for p in tb_dout]), file=tb_f) print(" );", file=tb_f) expr_dout = "{%s}" % ", ".join(tb_dout) expr_dout_ref = "{%s}" % ", ".join(i + "_R" for i in tb_dout) print(" wire error = %s !== %s;" % (expr_dout, expr_dout_ref), file=tb_f) print(" initial begin", file=tb_f) if debug_mode: print(" $dumpfile(`vcd_file);", file=tb_f) print(" $dumpvars(0, bram_%02d_%02d_tb);" % (k1, k2), file=tb_f) print(" #%d;" % (1000 + k2), file=tb_f) for p in (tb_clocks + tb_addr + tb_din): if p[-2:] == "EN": print(" %s <= ~0;" % p, file=tb_f) else: print(" %s <= 0;" % p, file=tb_f) print(" #1000;", file=tb_f) for v in [1, 0, 1, 0]: for p in tb_clocks: print(" %s = %d;" % (p, v), file=tb_f) print(" #1000;", file=tb_f) for i in range(20 if debug_mode else 100): if len(tb_clocks): c = random.choice(tb_clocks) print(" %s = !%s;" % (c, c), file=tb_f) print(" #100;", file=tb_f) print(" $display(\"bram_%02d_%02d %3d: %%b %%b %%s\", %s, %s, error ? \"ERROR\" : \"OK\");" % (k1, k2, i, expr_dout, expr_dout_ref), file=tb_f) for p in tb_din: print(" %s <= %d;" % (p, random.randrange(1048576)), file=tb_f) for p in tb_addr: print(" %s <= %d;" % (p, random.choice(tb_addrlist)), file=tb_f) print(" #900;", file=tb_f) print(" end", file=tb_f) print("endmodule", file=tb_f) print("Rng seed: %d" % seed) random.seed(seed) for k1 in range(5): dsc_f = file("temp/brams_%02d.txt" % k1, "w") sim_f = file("temp/brams_%02d.v" % k1, "w") ref_f = file("temp/brams_%02d_ref.v" % k1, "w") tb_f = file("temp/brams_%02d_tb.v" % k1, "w") for f in [sim_f, ref_f, tb_f]: print("`timescale 1 ns / 1 ns", file=f) lenk2 = 1 if debug_mode else 10 for k2 in range(lenk2): create_bram(dsc_f, sim_f, ref_f, tb_f, k1, k2, random.randrange(2 if k2+1 < lenk2 else 1))