#!/usr/bin/env python3
# See LICENSE for licensing information.
#
# Copyright (c) 2016-2021 Regents of the University of California and The Board
# of Regents for the Oklahoma Agricultural and Mechanical College
# (acting for and on behalf of Oklahoma State University)
# All rights reserved.
#
import unittest
from testutils import *
import sys, os
sys.path.append(os.getenv("OPENRAM_HOME"))
import globals
from globals import OPTS
from sram_factory import factory
import debug


class timing_sram_test(openram_test):

    def runTest(self):
        config_file = "{}/tests/configs/config".format(os.getenv("OPENRAM_HOME"))
        globals.init_openram(config_file)
        OPTS.spice_name="ngspice"
        OPTS.analytical_delay = False
        OPTS.netlist_only = True

        # This is a hack to reload the characterizer __init__ with the spice version
        from importlib import reload
        import characterizer
        reload(characterizer)
        from characterizer import delay
        from sram_config import sram_config
        OPTS.local_array_size = 2
        c = sram_config(word_size=4,
                        num_words=16,
                        num_banks=1)
        c.words_per_row=1
        c.recompute_sizes()
        # c = sram_config(word_size=8,
        #                 num_words=32,
        #                 num_banks=1)

        # c.words_per_row=2
        # c.recompute_sizes()
        debug.info(1, "Testing timing for global hierarchical array")
        s = factory.create(module_type="sram", sram_config=c)

        tempspice = OPTS.openram_temp + "temp.sp"
        s.sp_write(tempspice)

        probe_address = "1" * s.s.addr_size
        probe_data = s.s.word_size - 1
        debug.info(1, "Probe address {0} probe data bit {1}".format(probe_address, probe_data))

        corner = (OPTS.process_corners[0], OPTS.supply_voltages[0], OPTS.temperatures[0])
        d = delay(s.s, tempspice, corner)
        import tech
        loads = [tech.spice["dff_in_cap"]*4]
        slews = [tech.spice["rise_time"]*2]
        data, port_data = d.analyze(probe_address, probe_data, slews, loads)
        #Combine info about port into all data
        data.update(port_data[0])

        if OPTS.tech_name == "freepdk45":
            golden_data = {'delay_hl': [0.26308339999999997],
                            'delay_lh': [0.26308339999999997],
                            'disabled_read0_power': [0.1829355],
                            'disabled_read1_power': [0.1962055],
                            'disabled_write0_power': [0.2130763],
                            'disabled_write1_power': [0.2349011],
                            'leakage_power': 0.002509793,
                            'min_period': 0.977,
                            'read0_power': [0.4028693],
                            'read1_power': [0.4055884],
                            'slew_hl': [0.27116019999999996],
                            'slew_lh': [0.27116019999999996],
                            'write0_power': [0.44159149999999997],
                            'write1_power': [0.3856132]}
        elif OPTS.tech_name == "scn4m_subm":
            golden_data = {'delay_hl': [2.0149939999999997],
                            'delay_lh': [2.0149939999999997],
                            'disabled_read0_power': [7.751129],
                            'disabled_read1_power': [9.025803],
                            'disabled_write0_power': [9.546656],
                            'disabled_write1_power': [10.2449],
                            'leakage_power': 0.004770704,
                            'min_period': 7.188,
                            'read0_power': [17.68452],
                            'read1_power': [18.24353],
                            'slew_hl': [1.942796],
                            'slew_lh': [1.942796],
                            'write0_power': [20.02101],
                            'write1_power': [15.389470000000001]}
        else:
            self.assertTrue(False) # other techs fail

        # Check if no too many or too few results
        self.assertTrue(len(data.keys())==len(golden_data.keys()))

        self.assertTrue(self.check_golden_data(data,golden_data,0.25))

        globals.end_openram()

# run the test from the command line
if __name__ == "__main__":
    (OPTS, args) = globals.parse_args()
    del sys.argv[1:]
    header(__file__, OPTS.tech_name)
    unittest.main(testRunner=debugTestRunner())