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#!/usr/bin/env python
"""
TODO:
- values should only parse as section if XYZ???
- whitespace control
http://jinja.pocoo.org/docs/templates/#whitespace-control
- disable HTML safety for non-html documents?
"""
from __future__ import print_function
import sys
import csv
import time
import os
import jinja2
AXI_ADDR_BITS = 16
WORD_BITS = 32
def parse_slug(s):
pre = s.split('[')[0]
post = None
assert(pre == filter(lambda x: x.isalnum() or x is '_', pre))
assert(len(pre) >= 1 and pre[0] != '_')
if '[' in s:
assert(s.count('[') == 1)
assert(s.count(']') == 1 and s[-1] == ']')
post = int(s.split('[')[1][:-1])
assert(post >= 0)
return (pre, post)
def str2val(s, bits):
"""
Strip '_' characters (eg, 0x1111_2222).
Allow 0x and 0b prefixes.
"""
v = None
s = s.lower().replace('_', '')
if s.count("'") is 1:
raise NotImplementedError("Can't handle verilog-style constants yet")
if s.startswith('0b'):
v = int(s[2:], 2)
if s.startswith('0x'):
v = int(s[2:], 16)
else: # fallback
v = int(s)
assert(v >= 0 and v < 2**bits)
return v
class Value():
index = None
bits = None
section = None
section_index = None
slug = None
slug_index = None
default = None
description = None
mode = None
addr = None
def offset(self, offset):
self.addr = offset + (4 * self.index)
def addr_pp(self):
return "0x%08X" % self.addr
def __init__(self, word_index=None, bits=None, section=None, slug=None,
default=None, description=None, mode=None):
# TODO: input validation/transforms
self.index = int(word_index)
assert(self.index >= 0)
assert(self.index <= (2**AXI_ADDR_BITS - 1))
if bits in [None, '']:
raise ValueError("Bits not defined")
self.bits = str2val(bits, 9)
assert(self.bits >= 1)
assert(self.bits <= 128)
if section is None:
(self.section, self.section_index) = ('top_level', None)
else:
(self.section, self.section_index) = parse_slug(section)
if slug is None:
(self.slug, self.slug_index) = (None, None)
else:
(self.slug, self.slug_index) = parse_slug(slug)
if default not in [None, '']:
self.default = str2val(default, self.bits)
else:
self.default = 0
self.description = description
self.mode = mode
def __str__(self):
return "<Value: %s>" % str(self.__dict__)
class Register(Value):
read = False
write = False
class Parameter(Value):
pass
def check_overlaps(l):
rangelist = []
for val in l:
# TODO: also handle larger ranges
this = (val.index, val.index + ((val.bits-1)/WORD_BITS))
inserted = False
for i in range(len(rangelist)):
that = rangelist[i]
if ((that[0] <= this[0] <= that[1])
or (that[0] <= this[1] <= that[1])):
raise ValueError("Overlapping memory ranges: %s and %s" %
(this, that))
if this[0] < that[0]:
rangelist.insert(i, this)
inserted = True
break
if not inserted:
rangelist.append(this)
def check_names(l):
names = []
n = None
for val in l:
if val.section:
n = "%s.%s" % (val.section, val.slug)
else:
n = val.slug
if n in names:
raise ValueError("Dupliate name: %s" % n)
names.append(n)
def error(s="unspecified"):
sys.stderr.write(str(s) + '\n')
sys.exit(-1)
class Repeated():
section = None
def __init__(self, word_index, slug):
self.index = int(word_index)
assert(self.index >= 0)
assert(self.index <= (2**AXI_ADDR_BITS - 1))
if self.section is '':
self.section = ''
self.section_index = None
else:
(self.section, self.section_index) = parse_slug(section)
req = ('word_index', 'bits', 'mode', 'section', 'slug', 'default',
'description')
print("------- START READ")
f = open('example.csv', 'r')
reader = csv.DictReader(f)
registers = []
parameters = []
mode = None
for line in reader:
if reader.line_num is 0:
# validate fields just once
for field in req:
if not field in reader.fields:
error("Missing column: %s" % field)
# skip lines w/o
if line['word_index'] in [None, '']:
print("Skipping line %d (no index)" % reader.line_num)
continue
mode = line['mode']
try:
if mode.lower() == 'p':
p = Parameter(**line)
parameters.append(p)
elif mode.lower() == 'r':
r = Register(**line)
r.read = True
registers.append(r)
else:
#error("Unknown mode: %s" % mode)
print("Skipping line %d (unknown mode %s)" % (reader.line_num,
mode))
pass
except (AttributeError, TypeError, ValueError), e:
error("Syntax error parsing line %d: %s" % (reader.line_num, e))
sys.stdout.write(".")
print('')
f.close()
print("Registers:\t%d" % len(registers))
print("Parameters:\t%d" % len(parameters))
offset = 0x0
for r in registers:
r.offset(offset)
for p in parameters:
p.offset(offset)
check_overlaps(registers + parameters)
check_names(registers + parameters)
sections = {}
for val in (registers + parameters):
if not val.section in sections.keys():
sections[val.section] = []
sections[val.section].append(val)
for key, sec in sections.iteritems():
sections[key] = sorted(sec, key=lambda x: x.index)
print("------- END READ")
# TODO: process into sections; sort; apply offsets
context = dict(registers=registers,
parameters=parameters,
name="example",
now=time.strftime("%Y-%m-%d %H:%M:%S UTC", time.gmtime()),
attribution="Generated by AXI-Lite Generator",
whoami=os.getenv('USER'),
sections=sections)
# TODO:
# jinja2.ChoiceLoader
# jinja2.PackageLoader
env = jinja2.Environment(loader=jinja2.FileSystemLoader('templates'))
#print("------- START PYTHON")
"""
params: single helper to dump them all
registers:
helper get/set by string (eg, get("meta.magic"))
module cmd to dump them all
module+slug cmd to get/set
<section>.<slug> getter/setter functions
"""
#print("------- END PYTHON")
#print("------- START HDL")
"""
wrapper stub also.
params: passed all around
registers: just one place
"""
#print("------- END HDL")
#print("------- START C_HEADER")
"""
just structs for parameters/registers
"""
#print("------- END C_HEADER")
print("------- START HTML")
t = env.get_template('minimal.html.tmpl')
out_f = open('output/example.html', 'w')
out_f.write(t.render(**context))
out_f.close()
print("------- END HTML")
print("------- START RST")
t = env.get_template('minimal.rst.tmpl')
out_f = open('output/example.rst', 'w')
out_f.write(t.render(**context))
out_f.close()
print("------- END RST")
print("------- DONE!")
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