Kintex7 ODELAYE2 fuzzer

fuzzers/035a-iob18-odelay/Makefile

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+# Copyright (C) 2017-2023  The Project X-Ray Authors.
+#
+# Use of this source code is governed by a ISC-style
+# license that can be found in the LICENSE file or at
+# https://opensource.org/licenses/ISC
+#
+# SPDX-License-Identifier: ISC
+N := 5
+include ../fuzzer.mk
+
+database: build/segbits_riob18.db
+
+build/segbits_riob18.rdb: $(SPECIMENS_OK)
+	${XRAY_SEGMATCH} -m 1 -M 1 -o build/segbits_riob18.rdb $$(find -name segdata_*.txt)
+
+build/segbits_riob18.db: build/segbits_riob18.rdb
+	${XRAY_DBFIXUP} --db-root build --zero-db bits.dbf --seg-fn-in $^ --seg-fn-out $@
+	${XRAY_MASKMERGE} build/mask_riob18.db $$(find -name segdata_*.txt)
+
+pushdb:
+	${XRAY_MERGEDB} rioi build/segbits_riob18.db
+	${XRAY_MERGEDB} rioi_tbytesrc build/segbits_riob18.db
+	${XRAY_MERGEDB} rioi_tbyteterm build/segbits_riob18.db
+	${XRAY_MERGEDB} mask_rioi build/mask_riob18.db
+	${XRAY_MERGEDB} mask_rioi_tbytesrc build/mask_riob18.db
+	${XRAY_MERGEDB} mask_rioi_tbyteterm build/mask_riob18.db
+
+.PHONY: database pushdb
+

fuzzers/035a-iob18-odelay/generate.py

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+#!/usr/bin/env python3
+# -*- coding: utf-8 -*-
+#
+# Copyright (C) 2017-2023  The Project X-Ray Authors.
+#
+# Use of this source code is governed by a ISC-style
+# license that can be found in the LICENSE file or at
+# https://opensource.org/licenses/ISC
+#
+# SPDX-License-Identifier: ISC
+import json
+
+from prjxray.segmaker import Segmaker, add_site_group_zero
+from prjxray import verilog
+
+
+def bitfilter(frame, word):
+    return frame >= 27
+
+def main():
+    segmk = Segmaker("design.bits", verbose=True)
+
+    # Load tags
+    with open("params.json", "r") as fp:
+        data = json.load(fp)
+
+    odelay_types = ["FIXED", "VARIABLE", "VAR_LOAD"]
+    delay_srcs = ["ODATAIN"]
+
+    # Output tags
+    for params in data:
+        if params['ODELAY_BYPASS']:
+            prims = params['ODELAY_NOT_IN_USE'].split(" ")
+            segmk.add_site_tag(prims[0], 'IN_USE', False)
+            segmk.add_site_tag(prims[1], 'IN_USE', False)
+            continue
+        segmk.add_site_tag(params['ODELAY_IN_USE'], 'IN_USE', True)
+        segmk.add_site_tag(params['ODELAY_NOT_IN_USE'], 'IN_USE', False)
+
+        loc = verilog.unquote(params["LOC"])
+
+        # Delay type
+		# VAR_LOAD and VAR_LOAD_PIPE are the same
+        value = verilog.unquote(params["ODELAY_TYPE"])
+        add_site_group_zero(
+            segmk, loc, "ODELAY_TYPE_", odelay_types, "FIXED", value)
+
+        # Delay value
+        value = int(params["ODELAY_VALUE"])
+        for i in range(5):
+            segmk.add_site_tag(
+                loc, "ODELAY_VALUE[%01d]" % i, ((value >> i) & 1) != 0)
+            segmk.add_site_tag(
+                loc, "ZODELAY_VALUE[%01d]" % i, ((value >> i) & 1) == 0)
+
+        value = verilog.unquote(params["CINVCTRL_SEL"])
+        segmk.add_site_tag(loc, "CINVCTRL_SEL", int(value == "TRUE"))
+
+        value = verilog.unquote(params["PIPE_SEL"])
+        segmk.add_site_tag(loc, "PIPE_SEL", int(value == "TRUE"))
+
+        if "IS_C_INVERTED" in params and verilog.unquote(params["CINVCTRL_SEL"]) != "TRUE":
+            segmk.add_site_tag(
+                loc, "IS_C_INVERTED", int(params["IS_C_INVERTED"]))
+            segmk.add_site_tag(loc, "ZINV_C", 1 ^ int(params["IS_C_INVERTED"]))
+
+        value = verilog.unquote(params["HIGH_PERFORMANCE_MODE"])
+        segmk.add_site_tag(
+            loc, "HIGH_PERFORMANCE_MODE", int(value == "TRUE"))
+
+        segmk.add_site_tag(
+            loc, "ZINV_ODATAIN", 1 ^ int(params["IS_ODATAIN_INVERTED"]))
+
+    segmk.compile(bitfilter=bitfilter)
+    segmk.write()
+
+
+if __name__ == "__main__":
+    main()

fuzzers/035a-iob18-odelay/generate.tcl

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+# Copyright (C) 2017-2023  The Project X-Ray Authors
+#
+# Use of this source code is governed by a ISC-style
+# license that can be found in the LICENSE file or at
+# https://opensource.org/licenses/ISC
+#
+# SPDX-License-Identifier: ISC
+create_project -force -part $::env(XRAY_PART) design design
+read_verilog top.v
+synth_design -top top
+
+set_property CFGBVS GND [current_design]
+set_property CONFIG_VOLTAGE 1.8 [current_design]
+set_property BITSTREAM.GENERAL.PERFRAMECRC YES [current_design]
+set_param tcl.collectionResultDisplayLimit 0
+
+set_property IS_ENABLED 0 [get_drc_checks {NSTD-1}]
+set_property IS_ENABLED 0 [get_drc_checks {UCIO-1}]
+set_property IS_ENABLED 0 [get_drc_checks {REQP-79}]
+set_property IS_ENABLED 0 [get_drc_checks {REQP-81}]
+set_property IS_ENABLED 0 [get_drc_checks {REQP-84}]
+set_property IS_ENABLED 0 [get_drc_checks {REQP-85}]
+set_property IS_ENABLED 0 [get_drc_checks {REQP-87}]
+set_property IS_ENABLED 0 [get_drc_checks {REQP-85}]
+set_property IS_ENABLED 0 [get_drc_checks {AVAL-28}]
+
+place_design
+route_design
+
+write_checkpoint -force design.dcp
+write_bitstream -force design.bit

fuzzers/035a-iob18-odelay/top.py

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+#!/usr/bin/env python3
+# -*- coding: utf-8 -*-
+#
+# Copyright (C) 2017-2023  The Project X-Ray Authors.
+#
+# Use of this source code is governed by a ISC-style
+# license that can be found in the LICENSE file or at
+# https://opensource.org/licenses/ISC
+#
+# SPDX-License-Identifier: ISC
+
+import os, random
+random.seed(int(os.getenv("SEED"), 16))
+
+import sys
+import json
+
+from prjxray import util
+from prjxray.db import Database
+
+# =============================================================================
+
+
+def gen_sites():
+    db = Database(util.get_db_root(), util.get_part())
+    grid = db.grid()
+
+    tile_list = []
+    for tile_name in sorted(grid.tiles()):
+        if "IOB18" not in tile_name or "SING" in tile_name:
+            continue
+        tile_list.append(tile_name)
+
+    get_xy = util.create_xy_fun('RIOB18_')
+    tile_list.sort(key=get_xy)
+
+    for iob_tile_name in tile_list:
+        iob_gridinfo = grid.gridinfo_at_loc(
+            grid.loc_of_tilename(iob_tile_name))
+
+        # Find IOI tile adjacent to IOB
+        for suffix in ["IOI", "IOI_TBYTESRC", "IOI_TBYTETERM"]:
+            try:
+                ioi_tile_name = iob_tile_name.replace("IOB18", suffix)
+                ioi_gridinfo = grid.gridinfo_at_loc(
+                    grid.loc_of_tilename(ioi_tile_name))
+                break
+            except KeyError:
+                pass
+
+        iob18s = [k for k, v in iob_gridinfo.sites.items() if v == "IOB18S"][0]
+        iob18m = [k for k, v in iob_gridinfo.sites.items() if v == "IOB18M"][0]
+        odelay_s = iob18s.replace("IOB", "ODELAY")
+        odelay_m = iob18m.replace("IOB", "ODELAY")
+
+        yield iob18m, odelay_m, iob18s, odelay_s
+
+
+def run():
+
+    # Get all [LR]IOI3 tiles
+    tiles = list(gen_sites())
+
+    # Header
+    print("// Tile count: %d" % len(tiles))
+    print("// Seed: '%s'" % os.getenv("SEED"))
+
+    ninputs = 0
+    do_idx = []
+    for i, sites in enumerate(tiles):
+        if random.randint(0, 1):
+            do_idx.append(ninputs)
+            ninputs += 1
+        else:
+            do_idx.append(None)
+
+    print(
+        '''
+module top (
+  (* CLOCK_BUFFER_TYPE = "NONE" *)
+  input  wire clk,
+  output wire [{N}:0] do
+);
+
+wire clk_buf = clk;
+
+wire [{N}:0] do_buf;
+    '''.format(N=ninputs - 1))
+
+    # LOCes IOBs
+    data = []
+    for i, (sites, obuf_idx) in enumerate(zip(tiles, do_idx)):
+
+        if random.randint(0, 1):
+            iob_inuse     = sites[0]
+            iob_other     = sites[2]
+            odelay_inuse  = sites[1]
+            odelay_other  = sites[3]
+        else:
+            iob_inuse     = sites[2]
+            iob_other     = sites[0]
+            odelay_inuse  = sites[3]
+            odelay_other  = sites[1]
+
+        use_obuf = obuf_idx is not None
+
+        if not use_obuf:
+            continue
+
+        params = {
+            "LOC":
+            "\"" + odelay_inuse + "\"",
+            "ODELAY_TYPE":
+            "\"" + random.choice(
+                ["FIXED", "VARIABLE", "VAR_LOAD"]) + "\"",
+            "ODELAY_VALUE":
+            random.randint(0, 31),
+            "HIGH_PERFORMANCE_MODE":
+            "\"" + random.choice(["TRUE", "FALSE"]) + "\"",
+            "CINVCTRL_SEL":
+            "\"" + random.choice(["TRUE", "FALSE"]) + "\"",
+            "PIPE_SEL":
+            "\"" + random.choice(["TRUE", "FALSE"]) + "\"",
+            "IS_C_INVERTED":
+            random.randint(0, 1),
+            "IS_ODATAIN_INVERTED":
+            random.randint(0, 1),
+        }
+
+        if params["ODELAY_TYPE"] != "\"VAR_LOAD_PIPE\"":
+            params["PIPE_SEL"] = "\"FALSE\""
+
+        # The datasheet says that for these two modes the delay is set to 0
+        if params["ODELAY_TYPE"] == "\"VAR_LOAD\"":
+            params["ODELAY_VALUE"] = 0
+        if params["ODELAY_TYPE"] == "\"VAR_LOAD_PIPE\"":
+            params["ODELAY_VALUE"] = 0
+
+        if params["ODELAY_TYPE"] == "\"FIXED\"":
+            params["IS_C_INVERTED"] = 0
+
+        param_str = ",".join(".%s(%s)" % (k, v) for k, v in params.items())
+
+        if random.randint(0, 5) == 0:
+            print('')
+            print('(* LOC="%s", KEEP, DONT_TOUCH *)' % iob_inuse)
+            print(
+                'OBUF obuf_%03d (.I(%d), .O(do[%3d]));' %
+                (obuf_idx, random.randint(0, 1), obuf_idx))
+            params['ODELAY_BYPASS'] = True
+            params["ODELAY_NOT_IN_USE"] = odelay_inuse + " " + odelay_other
+        else:
+            print('')
+            print('(* LOC="%s", KEEP, DONT_TOUCH *)' % iob_inuse)
+            print(
+                'OBUF obuf_%03d (.I(do_buf[%3d]), .O(do[%3d]));' %
+                (obuf_idx, obuf_idx, obuf_idx))
+            print(
+                'mod #(%s) mod_%03d (.clk(clk_buf), .O(do_buf[%3d]));' %
+                (param_str, i, obuf_idx))
+            params['ODELAY_BYPASS'] = False
+            params["ODELAY_IN_USE"] = odelay_inuse
+            params["ODELAY_NOT_IN_USE"] = odelay_other
+
+        data.append(params)
+
+    # Store params
+    with open("params.json", "w") as fp:
+        json.dump(data, fp, sort_keys=True, indent=1)
+
+    print(
+        '''
+// IDELAYCTRL
+(* KEEP, DONT_TOUCH *)
+IDELAYCTRL idelayctrl();
+
+endmodule
+
+(* KEEP, DONT_TOUCH *)
+module mod(
+  input  wire clk,
+  output  wire O
+);
+
+parameter LOC = "";
+parameter ODELAY_TYPE = "FIXED";
+parameter ODELAY_VALUE = 0;
+parameter DELAY_SRC = "ODATAIN";
+parameter HIGH_PERFORMANCE_MODE = "TRUE";
+parameter SIGNAL_PATTERN = "DATA";
+parameter CINVCTRL_SEL = "FALSE";
+parameter PIPE_SEL = "FALSE";
+parameter IS_C_INVERTED = 0;
+parameter IS_ODATAIN_INVERTED = 0;
+
+wire x;
+wire lut;
+
+(* KEEP, DONT_TOUCH *)
+LUT2 l( .O(lut) );
+
+// ODELAY
+(* LOC=LOC, KEEP, DONT_TOUCH *)
+ODELAYE2 #(
+  .ODELAY_TYPE(ODELAY_TYPE),
+  .ODELAY_VALUE(ODELAY_VALUE),
+  .DELAY_SRC(DELAY_SRC),
+  .HIGH_PERFORMANCE_MODE(HIGH_PERFORMANCE_MODE),
+  .SIGNAL_PATTERN(SIGNAL_PATTERN),
+  .CINVCTRL_SEL(CINVCTRL_SEL),
+  .PIPE_SEL(PIPE_SEL),
+  .IS_C_INVERTED(IS_C_INVERTED),
+  .IS_ODATAIN_INVERTED(IS_ODATAIN_INVERTED)
+)
+odelay
+(
+  .C(clk),
+  .REGRST(),
+  .LD(),
+  .CE(),
+  .INC(),
+  .CINVCTRL(),
+  .CNTVALUEIN(),
+  .ODATAIN(lut),
+  .LDPIPEEN(),
+  .DATAOUT(O),
+  .CNTVALUEOUT()
+);
+
+endmodule
+    ''')
+
+
+run()