luke
/
OpenRAM
mirror of https://github.com/VLSIDA/OpenRAM.git
1
0
Fork 0
Code Issues Packages Projects Releases Wiki Activity

Added changes to lib to allow the default to run. Will crash with multiport options.

This commit is contained in:
Hunter Nichols 2018-08-31 00:42:56 -07:00
parent 6614c3eb51
commit 60088c2dfb
2 changed files with 44 additions and 28 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

1
compiler/characterizer/delay.py
View File

@ -512,6 +512,7 @@ class delay():
target_period = 0.5 * (ub_period + lb_period) target_period = 0.5 * (ub_period + lb_period)
#Find the minimum period for all ports. Start at one port and perform binary search then use that delay as a starting position. #Find the minimum period for all ports. Start at one port and perform binary search then use that delay as a starting position.
#For testing purposes, only checks readwrite ports.
for port in self.readwrite_ports: for port in self.readwrite_ports:
# Binary search algorithm to find the min period (max frequency) of design # Binary search algorithm to find the min period (max frequency) of design
time_out = 25 time_out = 25

71
compiler/characterizer/lib.py
View File

@ -16,14 +16,27 @@ class lib:
self.sram = sram self.sram = sram
self.sp_file = sp_file self.sp_file = sp_file
self.use_model = use_model self.use_model = use_model
self.gen_port_names() #copy and paste from delay.py, names are not final will likely be changed later.
self.prepare_tables() self.prepare_tables()
self.create_corners() self.create_corners()
self.characterize_corners() self.characterize_corners()
def gen_port_names(self):
"""Generates the port names to be written to the lib file"""
self.readwrite_ports = []
self.write_ports = []
self.read_ports = []
#Generate the port names
for readwrite_port in range(OPTS.rw_ports):
self.readwrite_ports.append("RWP{0}".format(readwrite_port))
for write_port in range(OPTS.w_ports):
self.write_ports.append("WP{0}".format(write_port))
for read_port in range(OPTS.r_ports):
self.read_ports.append("RP{0}".format(read_port))
def prepare_tables(self): def prepare_tables(self):
""" Determine the load/slews if they aren't specified in the config file. """ """ Determine the load/slews if they aren't specified in the config file. """
# These are the parameters to determine the table sizes # These are the parameters to determine the table sizes
@ -85,13 +98,15 @@ class lib:
self.write_header() self.write_header()
self.write_data_bus() #Loop over all readwrite ports. This is debugging. Will change later.
for port in self.readwrite_ports:
self.write_addr_bus() #set the read and write port as inputs.
self.write_data_bus(port,port)
self.write_control_pins() self.write_addr_bus(port)
self.write_control_pins(port) #need to split this into sram and port control signals
self.write_clk()
#This definitely not in the final design
self.write_clk(port)
self.write_footer() self.write_footer()
@ -297,10 +312,10 @@ class lib:
def write_data_bus(self): def write_data_bus(self, write_port, read_port):
""" Adds data bus timing results.""" """ Adds data bus timing results."""
self.lib.write(" bus(DIN){\n") self.lib.write(" bus(DIN{0}){{\n".format(write_port))
self.lib.write(" bus_type : DATA; \n") self.lib.write(" bus_type : DATA; \n")
self.lib.write(" direction : in; \n") self.lib.write(" direction : in; \n")
# This is conservative, but limit to range that we characterized. # This is conservative, but limit to range that we characterized.
@ -311,7 +326,7 @@ class lib:
self.lib.write(" clocked_on : clk; \n") self.lib.write(" clocked_on : clk; \n")
self.lib.write(" }\n") self.lib.write(" }\n")
self.lib.write(" bus(DOUT){\n") self.lib.write(" bus(DOUT{0}){{\n".format(read_port))
self.lib.write(" bus_type : DATA; \n") self.lib.write(" bus_type : DATA; \n")
self.lib.write(" direction : out; \n") self.lib.write(" direction : out; \n")
# This is conservative, but limit to range that we characterized. # This is conservative, but limit to range that we characterized.
@ -322,38 +337,38 @@ class lib:
self.lib.write(" }\n") self.lib.write(" }\n")
self.lib.write(" pin(DOUT[{0}:0]){{\n".format(self.sram.word_size - 1)) self.lib.write(" pin(DOUT{1}[{0}:0]){{\n".format(self.sram.word_size - 1, read_port))
self.write_FF_setuphold() self.write_FF_setuphold()
self.lib.write(" timing(){ \n") self.lib.write(" timing(){ \n")
self.lib.write(" timing_sense : non_unate; \n") self.lib.write(" timing_sense : non_unate; \n")
self.lib.write(" related_pin : \"clk\"; \n") self.lib.write(" related_pin : \"clk\"; \n")
self.lib.write(" timing_type : rising_edge; \n") self.lib.write(" timing_type : rising_edge; \n")
self.lib.write(" cell_rise(CELL_TABLE) {\n") self.lib.write(" cell_rise(CELL_TABLE) {\n")
self.write_values(self.char_results["delay_lh"],len(self.loads)," ") self.write_values(self.char_results["delay_lh_{0}".format(read_port)],len(self.loads)," ")
self.lib.write(" }\n") # rise delay self.lib.write(" }\n") # rise delay
self.lib.write(" cell_fall(CELL_TABLE) {\n") self.lib.write(" cell_fall(CELL_TABLE) {\n")
self.write_values(self.char_results["delay_hl"],len(self.loads)," ") self.write_values(self.char_results["delay_hl_{0}".format(read_port)],len(self.loads)," ")
self.lib.write(" }\n") # fall delay self.lib.write(" }\n") # fall delay
self.lib.write(" rise_transition(CELL_TABLE) {\n") self.lib.write(" rise_transition(CELL_TABLE) {\n")
self.write_values(self.char_results["slew_lh"],len(self.loads)," ") self.write_values(self.char_results["slew_lh_{0}".format(read_port)],len(self.loads)," ")
self.lib.write(" }\n") # rise trans self.lib.write(" }\n") # rise trans
self.lib.write(" fall_transition(CELL_TABLE) {\n") self.lib.write(" fall_transition(CELL_TABLE) {\n")
self.write_values(self.char_results["slew_hl"],len(self.loads)," ") self.write_values(self.char_results["slew_hl_{0}".format(read_port)],len(self.loads)," ")
self.lib.write(" }\n") # fall trans self.lib.write(" }\n") # fall trans
self.lib.write(" }\n") # timing self.lib.write(" }\n") # timing
self.lib.write(" }\n") # pin self.lib.write(" }\n") # pin
self.lib.write(" }\n\n") # bus self.lib.write(" }\n\n") # bus
def write_addr_bus(self): def write_addr_bus(self, port):
""" Adds addr bus timing results.""" """ Adds addr bus timing results."""
self.lib.write(" bus(ADDR){\n") self.lib.write(" bus(ADDR{0}){{\n".format(port))
self.lib.write(" bus_type : ADDR; \n") self.lib.write(" bus_type : ADDR; \n")
self.lib.write(" direction : input; \n") self.lib.write(" direction : input; \n")
self.lib.write(" capacitance : {0}; \n".format(tech.spice["dff_in_cap"])) self.lib.write(" capacitance : {0}; \n".format(tech.spice["dff_in_cap"]))
self.lib.write(" max_transition : {0};\n".format(self.slews[-1])) self.lib.write(" max_transition : {0};\n".format(self.slews[-1]))
self.lib.write(" pin(ADDR[{0}:0])".format(self.sram.addr_size - 1)) self.lib.write(" pin(ADDR{1}[{0}:0])".format(self.sram.addr_size - 1, port))
self.lib.write("{\n") self.lib.write("{\n")
self.write_FF_setuphold() self.write_FF_setuphold()
@ -361,20 +376,20 @@ class lib:
self.lib.write(" }\n\n") self.lib.write(" }\n\n")
def write_control_pins(self): def write_control_pins(self, port):
""" Adds control pins timing results.""" """ Adds control pins timing results."""
ctrl_pin_names = ["CSb", "OEb", "WEb"] ctrl_pin_names = ["CSb", "OEb", "WEb"]
for i in ctrl_pin_names: for i in ctrl_pin_names:
self.lib.write(" pin({0})".format(i)) self.lib.write(" pin({0}{1})".format(i,port))
self.lib.write("{\n") self.lib.write("{\n")
self.lib.write(" direction : input; \n") self.lib.write(" direction : input; \n")
self.lib.write(" capacitance : {0}; \n".format(tech.spice["dff_in_cap"])) self.lib.write(" capacitance : {0}; \n".format(tech.spice["dff_in_cap"]))
self.write_FF_setuphold() self.write_FF_setuphold()
self.lib.write(" }\n\n") self.lib.write(" }\n\n")
#Port is a temporary input here. I do need a way to dynamically write the control signal here though.
def write_clk(self): def write_clk(self, port):
""" Adds clk pin timing results.""" """ Adds clk pin timing results."""
self.lib.write(" pin(clk){\n") self.lib.write(" pin(clk){\n")
@ -385,8 +400,8 @@ class lib:
# Find the average power of 1 and 0 bits for writes and reads over all loads/slews # Find the average power of 1 and 0 bits for writes and reads over all loads/slews
# Could make it a table, but this is fine for now. # Could make it a table, but this is fine for now.
avg_write_power = np.mean(self.char_results["write1_power"] + self.char_results["write0_power"]) avg_write_power = np.mean(self.char_results["write1_power_{0}".format(port)] + self.char_results["write0_power_{0}".format(port)])
avg_read_power = np.mean(self.char_results["read1_power"] + self.char_results["read0_power"]) avg_read_power = np.mean(self.char_results["read1_power_{0}".format(port)] + self.char_results["read0_power_{0}".format(port)])
# Equally divide read/write power between first and second half of clock period # Equally divide read/write power between first and second half of clock period
self.lib.write(" internal_power(){\n") self.lib.write(" internal_power(){\n")
@ -453,7 +468,7 @@ class lib:
else: else:
#Temporary Workaround to here to set # of ports. Crashes if set in config file. #Temporary Workaround to here to set # of ports. Crashes if set in config file.
#OPTS.rw_ports = 0 #OPTS.rw_ports = 0
#OPTS.r_ports = 2 #OPTS.r_ports = 1
#OPTS.w_ports = 1 #OPTS.w_ports = 1
probe_address = "1" * self.sram.addr_size probe_address = "1" * self.sram.addr_size