add test_bist with mila

test/test_bist.py

@@ -0,0 +1,77 @@
+import time
+import argparse
+from config import *
+
+sector_size = 512
+
+class SATABISTDriver:
+	def __init__(self, regs):
+		self.regs = regs
+		self.last_sector = 0
+		self.last_time = time.time()
+		self.last_errors = 0
+		self.mode = "rw"
+
+	def set_mode(self, mode):
+		self.mode = mode
+		self.regs.bist_write_only.write(0)
+		self.regs.bist_read_only.write(0)
+		if mode == "wr":
+			self.regs.bist_write_only.write(1)
+		if mode == "rd":
+			self.regs.bist_read_only.write(1)
+
+	def start(self, sector, count, mode):
+		self.set_mode(mode)
+		self.regs.bist_start_sector.write(sector)
+		self.regs.bist_count.write(count)
+		self.regs.bist_stop.write(0)
+		self.regs.bist_start.write(1)
+
+	def stop(self):
+		self.regs.bist_stop.write(1)
+
+	def show_status(self):
+		errors = self.regs.bist_errors.read() - self.last_errors
+		self.last_errors += errors
+
+		sector = self.regs.bist_sector.read()
+		n = sector - self.last_sector
+		self.last_sector = sector
+
+		t = self.last_time - time.time()
+		self.last_time = time.time()
+
+		if self.mode in ["wr", "rd"]:
+			speed_mult = 1
+		else:
+			speed_mult = 2
+		print("%4.2f MB/sec errors=%d sector=%d" %(n*sector_size*speed_mult/(1024*1024), errors, sector))
+
+
+def _get_args():
+	parser = argparse.ArgumentParser(formatter_class=argparse.RawDescriptionHelpFormatter,
+		description="""\
+SATA BIST utility.
+""")
+	parser.add_argument("-s", "--sector", default=0, help="BIST start sector")
+	parser.add_argument("-c", "--count", default=4, help="BIST count (number of sectors per transaction)")
+	parser.add_argument("-m", "--mode", default="rw", help="BIST mode (rw, wr, rd")
+
+	return parser.parse_args()
+
+if __name__ == "__main__":
+	args = _get_args()
+	wb.open()
+	###
+	bist = SATABISTDriver(wb.regs)
+	try:
+		bist.start(int(args.sector), int(args.count), args.mode)
+		while True:
+			bist.show_status()
+			time.sleep(1)
+	except KeyboardInterrupt:
+		pass
+	bist.stop()
+	###
+	wb.close()