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Merge branch 'dev' into bisr

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This commit is contained in:
Aditi Sinha
2020-05-02 07:48:35 +00:00
parent 2661a42726 0bae652be9
commit 2498ff07ea
96 changed files with 3358 additions and 1983 deletions
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compiler/characterizer/delay.py
+27 -2
View File
@@ -59,7 +59,8 @@ class delay(simulation):
""" Create measurement names. The names themselves currently define the type of measurement """
self.delay_meas_names = ["delay_lh", "delay_hl", "slew_lh", "slew_hl"]
self.power_meas_names = ["read0_power", "read1_power", "write0_power", "write1_power"]
self.power_meas_names = ["read0_power", "read1_power", "write0_power", "write1_power",
"disabled_read0_power", "disabled_read1_power", "disabled_write0_power", "disabled_write1_power"]
# self.voltage_when_names = ["volt_bl", "volt_br"]
# self.bitline_delay_names = ["delay_bl", "delay_br"]
@@ -108,6 +109,11 @@ class delay(simulation):
self.read_lib_meas.append(power_measure("read0_power", "FALL", measure_scale=1e3))
self.read_lib_meas[-1].meta_str = sram_op.READ_ZERO
self.read_lib_meas.append(power_measure("disabled_read1_power", "RISE", measure_scale=1e3))
self.read_lib_meas[-1].meta_str = "disabled_read1"
self.read_lib_meas.append(power_measure("disabled_read0_power", "FALL", measure_scale=1e3))
self.read_lib_meas[-1].meta_str = "disabled_read0"
# This will later add a half-period to the spice time delay. Only for reading 0.
for obj in self.read_lib_meas:
if obj.meta_str is sram_op.READ_ZERO:
@@ -156,6 +162,11 @@ class delay(simulation):
self.write_lib_meas.append(power_measure("write0_power", "FALL", measure_scale=1e3))
self.write_lib_meas[-1].meta_str = sram_op.WRITE_ZERO
self.write_lib_meas.append(power_measure("disabled_write1_power", "RISE", measure_scale=1e3))
self.write_lib_meas[-1].meta_str = "disabled_write1"
self.write_lib_meas.append(power_measure("disabled_write0_power", "FALL", measure_scale=1e3))
self.write_lib_meas[-1].meta_str = "disabled_write0"
write_measures = []
write_measures.append(self.write_lib_meas)
write_measures.append(self.create_write_bit_measures())
@@ -665,7 +676,7 @@ class delay(simulation):
if not success:
feasible_period = 2 * feasible_period
continue
# Positions of measurements currently hardcoded. First 2 are delays, next 2 are slews
feasible_delays = [results[port][mname] for mname in self.delay_meas_names if "delay" in mname]
feasible_slews = [results[port][mname] for mname in self.delay_meas_names if "slew" in mname]
@@ -1199,6 +1210,9 @@ class delay(simulation):
write_port)
self.measure_cycles[write_port][sram_op.WRITE_ZERO] = len(self.cycle_times)-1
self.add_noop_clock_one_port(write_port)
self.measure_cycles[write_port]["disabled_write0"] = len(self.cycle_times)-1
# This also ensures we will have a H->L transition on the next read
self.add_read("R data 1 address {} to set dout caps".format(inverse_address),
inverse_address,
@@ -1209,6 +1223,10 @@ class delay(simulation):
read_port)
self.measure_cycles[read_port][sram_op.READ_ZERO] = len(self.cycle_times)-1
self.add_noop_clock_one_port(read_port)
self.measure_cycles[read_port]["disabled_read0"] = len(self.cycle_times) - 1
self.add_noop_all_ports("Idle cycle (if read takes >1 cycle)")
self.add_write("W data 1 address {} to write value".format(self.probe_address),
@@ -1218,12 +1236,19 @@ class delay(simulation):
write_port)
self.measure_cycles[write_port][sram_op.WRITE_ONE] = len(self.cycle_times)-1
self.add_noop_clock_one_port(write_port)
self.measure_cycles[write_port]["disabled_write1"] = len(self.cycle_times)-1
self.add_write("W data 0 address {} to clear din caps".format(inverse_address),
inverse_address,
data_zeros,
wmask_ones,
write_port)
self.add_noop_clock_one_port(read_port)
self.measure_cycles[read_port]["disabled_read1"] = len(self.cycle_times) - 1
# This also ensures we will have a L->H transition on the next read
self.add_read("R data 0 address {} to clear dout caps".format(inverse_address),
inverse_address,
compiler/characterizer/lib.py
+61 -33
View File
@@ -45,7 +45,7 @@ class lib:
""" Determine the load/slews if they aren't specified in the config file. """
# These are the parameters to determine the table sizes
#self.load_scales = np.array([0.1, 0.25, 0.5, 1, 2, 4, 8])
self.load_scales = np.array([0.25, 1, 8])
self.load_scales = np.array([0.25, 1, 4])
#self.load_scales = np.array([0.25, 1])
self.load = tech.spice["dff_in_cap"]
self.loads = self.load_scales*self.load
@@ -181,17 +181,20 @@ class lib:
self.lib.write(" dont_touch : true;\n")
self.lib.write(" area : {};\n\n".format(self.sram.width * self.sram.height))
#Build string of all control signals.
self.write_pg_pin()
#Build string of all control signals.
control_str = 'csb0' #assume at least 1 port
for i in range(1, self.total_port_num):
control_str += ' & csb{0}'.format(i)
# Leakage is included in dynamic when macro is enabled
self.lib.write(" leakage_power () {\n")
self.lib.write(" when : \"{0}\";\n".format(control_str))
# 'when' condition unnecessary when cs pin does not turn power to devices
# self.lib.write(" when : \"{0}\";\n".format(control_str))
self.lib.write(" value : {};\n".format(self.char_sram_results["leakage_power"]))
self.lib.write(" }\n")
self.lib.write(" cell_leakage_power : {};\n".format(0))
self.lib.write(" cell_leakage_power : {};\n".format(self.char_sram_results["leakage_power"]))
def write_units(self):
@@ -240,6 +243,9 @@ class lib:
self.lib.write(" default_max_fanout : 4.0 ;\n")
self.lib.write(" default_connection_class : universal ;\n\n")
self.lib.write(" voltage_map ( VDD, {} );\n".format(tech.spice["nom_supply_voltage"]))
self.lib.write(" voltage_map ( GND, 0 );\n\n")
def create_list(self,values):
""" Helper function to create quoted, line wrapped list """
list_values = ", ".join(str(v) for v in values)
@@ -516,42 +522,69 @@ class lib:
if port in self.write_ports:
if port in self.read_ports:
web_name = " & !web{0}".format(port)
avg_write_power = np.mean(self.char_port_results[port]["write1_power"] + self.char_port_results[port]["write0_power"])
write1_power = np.mean(self.char_port_results[port]["write1_power"])
write0_power = np.mean(self.char_port_results[port]["write0_power"])
self.lib.write(" internal_power(){\n")
self.lib.write(" when : \"!csb{0} & clk{0}{1}\"; \n".format(port, web_name))
self.lib.write(" when : \"!csb{0}{1}\"; \n".format(port, web_name))
self.lib.write(" rise_power(scalar){\n")
self.lib.write(" values(\"{0}\");\n".format(avg_write_power/2.0))
self.lib.write(" values(\"{0:.6e}\");\n".format(write1_power))
self.lib.write(" }\n")
self.lib.write(" fall_power(scalar){\n")
self.lib.write(" values(\"{0}\");\n".format(avg_write_power/2.0))
self.lib.write(" values(\"{0:.6e}\");\n".format(write0_power))
self.lib.write(" }\n")
self.lib.write(" }\n")
# Disabled power.
disabled_write1_power = np.mean(self.char_port_results[port]["disabled_write1_power"])
disabled_write0_power = np.mean(self.char_port_results[port]["disabled_write0_power"])
self.lib.write(" internal_power(){\n")
self.lib.write(" when : \"csb{0}{1}\"; \n".format(port, web_name))
self.lib.write(" rise_power(scalar){\n")
self.lib.write(" values(\"{0:.6e}\");\n".format(disabled_write1_power))
self.lib.write(" }\n")
self.lib.write(" fall_power(scalar){\n")
self.lib.write(" values(\"{0:.6e}\");\n".format(disabled_write0_power))
self.lib.write(" }\n")
self.lib.write(" }\n")
if port in self.read_ports:
if port in self.write_ports:
web_name = " & web{0}".format(port)
avg_read_power = np.mean(self.char_port_results[port]["read1_power"] + self.char_port_results[port]["read0_power"])
read1_power = np.mean(self.char_port_results[port]["read1_power"])
read0_power = np.mean(self.char_port_results[port]["read0_power"])
self.lib.write(" internal_power(){\n")
self.lib.write(" when : \"!csb{0} & !clk{0}{1}\"; \n".format(port, web_name))
self.lib.write(" when : \"!csb{0}{1}\"; \n".format(port, web_name))
self.lib.write(" rise_power(scalar){\n")
self.lib.write(" values(\"{0}\");\n".format(avg_read_power/2.0))
self.lib.write(" values(\"{0:.6e}\");\n".format(read1_power))
self.lib.write(" }\n")
self.lib.write(" fall_power(scalar){\n")
self.lib.write(" values(\"{0}\");\n".format(avg_read_power/2.0))
self.lib.write(" values(\"{0:.6e}\");\n".format(read0_power))
self.lib.write(" }\n")
self.lib.write(" }\n")
# Have 0 internal power when disabled, this will be represented as leakage power.
self.lib.write(" internal_power(){\n")
self.lib.write(" when : \"csb{0}\"; \n".format(port))
self.lib.write(" rise_power(scalar){\n")
self.lib.write(" values(\"0\");\n")
self.lib.write(" }\n")
self.lib.write(" fall_power(scalar){\n")
self.lib.write(" values(\"0\");\n")
self.lib.write(" }\n")
self.lib.write(" }\n")
# Disabled power.
disabled_read1_power = np.mean(self.char_port_results[port]["disabled_read1_power"])
disabled_read0_power = np.mean(self.char_port_results[port]["disabled_read0_power"])
self.lib.write(" internal_power(){\n")
self.lib.write(" when : \"csb{0}{1}\"; \n".format(port, web_name))
self.lib.write(" rise_power(scalar){\n")
self.lib.write(" values(\"{0:.6e}\");\n".format(disabled_read1_power))
self.lib.write(" }\n")
self.lib.write(" fall_power(scalar){\n")
self.lib.write(" values(\"{0:.6e}\");\n".format(disabled_read0_power))
self.lib.write(" }\n")
self.lib.write(" }\n")
def write_pg_pin(self):
self.lib.write(" pg_pin(vdd) {\n")
self.lib.write(" voltage_name : VDD;\n")
self.lib.write(" pg_type : primary_power;\n")
self.lib.write(" }\n\n")
self.lib.write(" pg_pin(gnd) {\n")
self.lib.write(" voltage_name : GND;\n")
self.lib.write(" pg_type : primary_ground;\n")
self.lib.write(" }\n\n")
def compute_delay(self):
"""Compute SRAM delays for current corner"""
self.d = delay(self.sram, self.sp_file, self.corner)
@@ -624,17 +657,12 @@ class lib:
))
# information of checks
from hierarchy_design import total_drc_errors
from hierarchy_design import total_lvs_errors
DRC = 'skipped'
LVS = 'skipped'
if OPTS.check_lvsdrc:
DRC = str(total_drc_errors)
LVS = str(total_lvs_errors)
datasheet.write("{0},{1},".format(DRC, LVS))
(drc_errors, lvs_errors) = self.sram.DRC_LVS(final_verification=True)
datasheet.write("{0},{1},".format(drc_errors, lvs_errors))
# write area
datasheet.write(str(self.sram.width * self.sram.height)+',')
datasheet.write(str(self.sram.width * self.sram.height) + ',')
# write timing information for all ports
for port in self.all_ports:
#din timings
compiler/characterizer/simulation.py
+17
View File
@@ -284,6 +284,23 @@ class simulation():
except:
self.add_wmask("0"*self.num_wmasks, port)
def add_noop_clock_one_port(self, port):
""" Add the control values for a noop to a single port. Increments the period. """
debug.info(2, 'Clock only on port {}'.format(port))
self.fn_cycle_comments.append('Clock only on port {}'.format(port))
self.append_cycle_comment(port, 'Clock only on port {}'.format(port))
self.cycle_times.append(self.t_current)
self.t_current += self.period
self.add_noop_one_port(port)
#Add noops to all other ports.
for unselected_port in self.all_ports:
if unselected_port != port:
self.add_noop_one_port(unselected_port)
def append_cycle_comment(self, port, comment):
"""Add comment to list to be printed in stimulus file"""
#Clean up time before appending. Make spacing dynamic as well.
compiler/characterizer/stimuli.py
+13
View File
@@ -34,6 +34,10 @@ class stimuli():
self.sf = stim_file
(self.process, self.voltage, self.temperature) = corner
try:
self.device_libraries = tech.spice["fet_libraries"][self.process]
except:
debug.info(2, "Not using spice library")
self.device_models = tech.spice["fet_models"][self.process]
self.sram_name = "Xsram"
@@ -247,8 +251,17 @@ class stimuli():
def write_include(self, circuit):
"""Writes include statements, inputs are lists of model files"""
includes = self.device_models + [circuit]
self.sf.write("* {} process corner\n".format(self.process))
if OPTS.tech_name == "s8":
libraries = self.device_libraries
for item in list(libraries):
if os.path.isfile(item[0]):
self.sf.write(".lib \"{0}\" {1}\n".format(item[0], item[1]))
else:
debug.error("Could not find spice library: {0}\nSet SPICE_MODEL_DIR to over-ride path.\n".format(item[0]))
for item in list(includes):
if os.path.isfile(item):
self.sf.write(".include \"{0}\"\n".format(item))